diff --git a/.assets/Netrix.png b/.assets/Netrix.png new file mode 100644 index 0000000..6da0558 Binary files /dev/null and b/.assets/Netrix.png differ diff --git a/.assets/Netrix_BG.png b/.assets/Netrix_BG.png new file mode 100644 index 0000000..2e45784 Binary files /dev/null and b/.assets/Netrix_BG.png differ diff --git a/.assets/Netrix_BG_Text.png b/.assets/Netrix_BG_Text.png new file mode 100644 index 0000000..4a23918 Binary files /dev/null and b/.assets/Netrix_BG_Text.png differ diff --git a/.assets/screenshot-modes.png b/.assets/screenshot-modes.png new file mode 100644 index 0000000..e227b36 Binary files /dev/null and b/.assets/screenshot-modes.png differ diff --git a/.assets/screenshot-skip.png b/.assets/screenshot-skip.png new file mode 100644 index 0000000..cebff32 Binary files /dev/null and b/.assets/screenshot-skip.png differ diff --git a/.docs/ARCHITECTURE.md b/.docs/ARCHITECTURE.md new file mode 100644 index 0000000..25a114a --- /dev/null +++ b/.docs/ARCHITECTURE.md @@ -0,0 +1,41 @@ +# ARCHITECTURE + +Current state (`main` @ 9d99eb1) plus target-state notes for the modernization in [PLAN.md](PLAN.md). + +## Components +``` +Netrix.exe (WinForms, .NET) native / external (bin\) +├─ Forms/ UI ├─ Redirector.bin + nfapi.dll + nfdriver.sys process capture (Netfilter) +├─ Controllers/ runtime lifecycle ──► ├─ tun2socks.bin + wintun.dll TUN mode +├─ Servers/ per-protocol ├─ pcap2socks / Npcap Share mode +├─ Models/ Server, Mode, Setting ├─ aiodns.bin DNS +├─ Interops/ P/Invoke wrappers ├─ RouteHelper.bin route table +├─ Services/ Utils/ └─ xray / v2ray-sn / ss / ssr / trojan cores protocol back-ends +└─ Program.cs +``` + +## Runtime flow +1. `Program.Main`: single-instance guard, set cwd, append `bin\` to PATH, create dirs (`mode\Custom`, `data`, `i18n`, `logging`), load config + modes + i18n, show `MainForm`. +2. User picks Server + Mode; `MainController` starts: + 1. Server's `IServerUtil.GetController()` returns an `IServerController` that starts the protocol core and exposes a local SOCKS5 (`Socks5Server`). + 2. Mode controller (`IModeController`: `NFController`, `TUNController`, `PcapController`) starts with that SOCKS5 + the `Mode`. + 3. `DNSController` (aiodns) starts as needed; `Guard` watches child processes. +3. Stop reverses order via `IController.StopAsync`. + +## Extension points +- **Protocol**: `Servers//` = `*Server` (model) + `*Util : IServerUtil` (URI scheme, share link, parse, check) + `*Form` + optional `*Controller : IServerController`. Polymorphic JSON via `ServerConverterWithTypeDiscriminator`. +- **Mode**: `Models/Modes/*` + `ModeConverterWithTypeDiscriminator`; behavior in matching `IModeController`. +- **Native call**: declare in `NativeMethods.txt` (CsWin32) or hand-write in `Interops/`. + +## Persistence +`data\` (settings, servers, subscriptions JSON), `mode\` (mode files), `i18n\`, `logging\` (Serilog). Formats must stay backward compatible. + +## Build graph +`build.ps1` runs `Other/build.ps1` (Go, MSYS2 C++, Rust builds), then `dotnet publish Netrix` (win-x64, single-file, self-contained), then `msbuild Redirector`, then `msbuild RouteHelper`, then assembles `release\` (+ `Storage\` assets, GeoIP mmdb download). + +## Target-state changes +- TFM `net10.0-windows`; `Tests` same TFM (currently `net5.0`). +- CsWin32 on stable release; adjust `NativeMethods.txt` if APIs renamed. +- Keep `System.Text.Json` converters; no source-gen unless trimming is enabled (not planned). +- No structural refactor: controller/server interfaces stay as is. +- Binary provenance table (name, version, source URL, sha256) kept in `Storage/README.md`. diff --git a/.docs/CLAUDE.md b/.docs/CLAUDE.md new file mode 100644 index 0000000..2b1344d --- /dev/null +++ b/.docs/CLAUDE.md @@ -0,0 +1,43 @@ +# CLAUDE.md + +Netrix 2.0: Windows proxy client (WinForms, .NET 10, x64 only). Needs admin at runtime (see `Netrix/App.manifest`). GPLv3. + +## Layout + +- `Netrix/` — main WinForms app (`net10.0-windows`). Entry: `Program.cs`. + - `Controllers/` — runtime pieces started/stopped by `MainController` (`NFController`, `TUNController`, `PcapController`, `DNSController`, `Guard`, `UpdateChecker`). Implement `IController` / `IModeController`. + - `Servers//` — one folder per protocol (Shadowsocks, ShadowsocksR, Socks5, SSH, Trojan, V2ray, VLESS, VMess, WireGuard). Each has `*Server` (model), `*Util` (`IServerUtil`: URI parse, share link, controller factory), `*Form` (edit UI), and often `*Controller`. + - `Models/Modes/` — `ProcessMode`, `TunMode`, `ShareMode`; JSON polymorphism via `JsonConverter/*TypeDiscriminator.cs`. + - `Interops/` — P/Invoke wrappers for native bins (Redirector, RouteHelper, tun2socks, aiodns). `NativeMethods.txt` feeds CsWin32. + - `Utils/`, `Services/`, `Forms/`, `Models/Settings/` — helpers, services, UI, config. +- `Redirector/` — C++ (vcxproj) Netfilter-based process redirector → `nfapi.dll`, `Redirector.bin`. +- `RouteHelper/` — C++ (vcxproj) route table helper → `RouteHelper.bin`. +- `Other/` — third-party deps built from source (aiodns, pcap2socks, v2ray-sn, wintun); each has own `build.ps1`; `Other/build.ps1` runs all. +- `Storage/` — runtime assets copied into release: `i18n/`, `mode/`, `stun.txt`, `nfdriver.sys`, `aiodns.conf`, prebuilt `tun2socks.bin`. +- `Tests/` — MSTest project (net10.0-windows): share-link and mode/setting JSON round-trips. Run `dotnet test Tests\Tests.csproj -p:Platform=x64`. + +## Build + +Windows only. Needs .NET 10 SDK, MSBuild + C++ toolchain (for Redirector/RouteHelper), Go etc. for `Other/`. + +```powershell +.\build.ps1 # dev build into .\.build\dev (builds Other, Netrix, Redirector, RouteHelper); keeps .build\dev\data +.\build.ps1 -Release # release build into .\.build\release (what CI packages) +.\build.ps1 -PlatformToolset v145 # machine with only Visual Studio 2026 (the .vcxproj files say v143); needs msbuild on PATH, Go 1.17.1/1.18.10 via GO117/GO118, run under pwsh +.\build.ps1 -Configuration Debug # debug +dotnet build Netrix\Netrix.csproj -c Debug -p:Platform=x64 # app only +dotnet test Tests\Tests.csproj +.\clean.ps1 +``` + +`build.ps1` skips a component if its output dir (`Netrix\bin\`, `Redirector\bin\`, `RouteHelper\bin\`, `Other\release`) already exists — run `.\clean.ps1` to force rebuild. It downloads `GeoLite2-Country.mmdb` at build time. CI: `.github/workflows/build.yml` (caches keyed by `hashFiles` of each source dir; `release.yml` reuses it). + +## Conventions + +- `common.props` + csproj: nullable/implicit usings on, analyzers with `CodeAnalysisTreatWarningsAsErrors` and `EnforceCodeStyleInBuild` — style/analyzer warnings break the build. +- Uses `Microsoft.VisualStudio.Threading` analyzers (VSTHRD*) and Fody (`ConfigureAwait.Fody`): don't hand-write `ConfigureAwait`; async-void only for event handlers. +- Runtime layout expects `bin\` next to `Netrix.exe` (added to PATH); user data in `data\`, `mode\`, `i18n\`, `logging\`. +- Adding a protocol: new `Servers//` with Server/Util/Form(/Controller). `ServerHelper` finds every public `IServerUtil` by reflection and the JSON converter resolves server types through it, so no registration is needed. Add a round-trip test in `Tests/ShareLinkTests.cs`. +- Translations: `Storage/i18n/` and `Netrix/Resources/zh-CN`; strings go through `i18N.Translate`. +- Dependabot PRs dominate git history; keep commits small. +- Modernization plan/status: `.docs/PLAN.md`, `.docs/TASK.md`, `.docs/QA.md`. diff --git a/.docs/PERF.md b/.docs/PERF.md new file mode 100644 index 0000000..f472907 --- /dev/null +++ b/.docs/PERF.md @@ -0,0 +1,12 @@ +# Performance results + +CPU = % of one core summed over Netrix, v2ray-sn during the run. Url/ping host fixed in bench.ps1 defaults. + +| date | label | 1 stream Mbps | CPU% | 16 streams Mbps | CPU% | ping ms | dns ms | mem MB | 40 small req ms | +|---|---|---|---|---|---|---|---|---|---| +| 2026-10-11 12:06 | direct-baseline | 178.8 | 0 | 34.1 | 0 | 5.1 | 86 | 0 | n/a | +| 2026-10-11 12:29 | direct-with-small | 87.4 | 7 | 270.3 | 16 | 0.0 | 728 | 169 | 321 | +| 2026-10-11 17:39 | tun-current-running-build | 144 | 12 | 14.6 | 2 | 0.0 | 105 | 377 | 1667 | +| 2026-10-11 17:41 | tun-current-running-build-repeat | 148.4 | 1 | 29.3 | 2 | 0.0 | 661 | 361 | 532 | +| 2026-10-11 17:49 | old-r2 | 25.3 | 6 | 7.3 | 8 | 0.0 | 247 | 340 | 1528 | +| 2026-10-11 17:55 | old-r1 | 55 | 17 | 1.7 | 8 | 0.0 | 80 | 349 | 1564 | diff --git a/.docs/PLAN.md b/.docs/PLAN.md new file mode 100644 index 0000000..f271a2a --- /dev/null +++ b/.docs/PLAN.md @@ -0,0 +1,39 @@ +# PLAN — Modernize Netrix 1.x + +Goal: move off EOL .NET 6, refresh deps and bundled binaries, make CI/build reliable, add real tests. No new features, no behavior change. + +See [ARCHITECTURE.md](ARCHITECTURE.md), [TASK.md](TASK.md), [QA.md](QA.md), [RISKS.md](RISKS.md). + +## Why +- `net6.0-windows` EOL since Nov 2024; `Tests` still on `net5.0`. +- GitHub Actions pinned to old majors (`upload-artifact@v3`, `cache@v3`, `checkout@v3`, `setup-go@v3`, `actions-rs/toolchain@v1` unmaintained). +- Pre-release package (`CsWin32 0.1.588-beta`); `Stun.Net`, `WindowsJobAPI` possibly stale. +- Bundled binaries (`tun2socks.bin`, `nfdriver.sys`, xray/v2ray, wintun) likely behind upstream. +- Tests near-empty: no safety net for refactors. + +## Decisions +| Decision | Choice | Reason | +|---|---|---| +| Target framework | `net10.0-windows` (LTS). Fallback `net8.0-windows` | net8 EOL Nov 2026; SDK 10 already installed on dev box | +| Scope | x64 only, WinForms kept | Matches current product | +| Behavior | Unchanged; config/mode JSON stay compatible | Users keep `data\` and `mode\` | +| Tests first | Characterization tests before framework bump | Catch regressions | + +## Phases +1. **Baseline** — build current `main` clean, record output tree, add characterization tests (share-link parse/format, mode JSON round-trip, config load). Exit: green CI on unchanged code. +2. **Framework bump** — `common.props`, `Netrix.csproj`, `Tests` to new TFM; fix analyzer/CsWin32 breaks (warnings are errors). Exit: app starts, connects in each mode. +3. **NuGet refresh** — bump one group at a time (Serilog, System.*, Fody/ConfigureAwait, CsWin32 to stable, MaxMind, TraceEvent, TaskScheduler, Stun.Net). Replace dead packages if needed. Exit: `dotnet list package --vulnerable --deprecated` clean. +4. **Native + bundled binaries** — rebuild `Redirector`/`RouteHelper` on current VS toolset; update `Other/*` (aiodns Go modules, pcap2socks, v2ray-sn, wintun) and prebuilt `Storage/` binaries; record versions + hashes. Exit: Process/TUN/Share modes pass QA. +5. **CI/CD** — bump actions, replace `actions-rs`, `upload-artifact@v4`, add `dotnet test` step, pin Go/Rust, fix cache keys. Exit: green PR build, release artifact layout identical. +6. **Cleanup + release** — remove dead code, update README/CLAUDE.md, tag RC, full QA pass. + +7. **Performance and optimization** (after the release candidate) - measure first, then change one thing at a time; see the Performance section in [TASK.md](TASK.md). Goals: higher throughput and lower latency through TUN mode, faster start, smaller and lighter app. Rule: no optimization without a before/after number from the same test. + +## Out of scope +New protocols, UI redesign, ARM64 (blocked on x64-only prebuilt binaries), Netrix 2.0 rewrite. WebMode and IPv6 in TUN mode were added during the update. A sing-box based core (TUN and process routing) is an open option, see TASK.md. + +## Done when +All [QA.md](QA.md) release gates pass and every [TASK.md](TASK.md) item is checked. + +## Status notes +- 2026-10-11: a full local build ran end to end. TUN mode was started on Windows by the owner and carries traffic after two fixes found in testing: `aiodns` panicked on a failed upstream DNS lookup (killed the process), and IPv6 bypassed the tunnel (now routed into it, setting `TUNTAP.ProxyIPv6`). Process mode, Share mode and WebMode are still untested on real traffic. diff --git a/.docs/QA.md b/.docs/QA.md new file mode 100644 index 0000000..025d6a0 --- /dev/null +++ b/.docs/QA.md @@ -0,0 +1,37 @@ +# QA + +Verify no regression after each phase in [PLAN.md](PLAN.md). Windows 10 22H2 and Windows 11, x64, admin account, clean VM snapshot per run. + +## Automated (CI) +- `dotnet build -c Release`: zero warnings +- `dotnet test`: green +- `dotnet list package --vulnerable --deprecated`: empty +- Release artifact layout diff vs baseline: same files in `.build\release\` and `.build\release\bin\` + +## Manual matrix +| Area | Cases | +|---|---| +| Startup | Fresh extract; missing `bin\` shows error; second instance blocked; non-admin prompts UAC | +| Upgrade | Old `data\`, `mode\Custom` from previous release load unchanged | +| Protocols | Add via form, share link/clipboard, subscription: SS, SSR, VMess, VLESS, Trojan, Socks5, WireGuard, SSH | +| Share links | Export then re-import gives identical server | +| Process mode | Chosen app proxied; others direct; stop restores traffic; driver install/uninstall ok | +| TUN mode | Adapter created, routes set, DNS works; stop removes adapter/routes; no leak after crash + restart | +| Share mode | Second device via hotspot/Npcap routes through proxy | +| DNS | aiodns rule split; custom DNS setting honored | +| Tools | Delay test, STUN NAT test, bandwidth counter, GeoIP flag, update check | +| UI | i18n en + zh-CN, high-DPI 125/150/200%, log window, tray icon | +| Failure | Bad server, port in use, core crash (Guard cleans up), network drop | +| Shutdown | Exit while running leaves no stray processes, routes, firewall rules, scheduled tasks | + +## Release gates +1. Manual matrix passes on Win10 + Win11. +2. No crash in 30 min soak per mode. +3. Memory flat (±10%) over soak. +4. Artifact SHA256 recorded; binaries table in `Storage/README.md` current. +5. Rollback: previous release still opens the new `data\`. + +## Bug triage +- S1: data loss, traffic leak, system network left broken. Blocks release. +- S2: a mode is broken. Blocks release. +- S3: UI/cosmetic. Ship. diff --git a/.docs/RISKS.md b/.docs/RISKS.md new file mode 100644 index 0000000..6e95ce0 --- /dev/null +++ b/.docs/RISKS.md @@ -0,0 +1,13 @@ +# RISKS + +| Risk | Impact | Mitigation | +|---|---|---| +| CsWin32 stable renames/changes APIs vs `0.1.588-beta` | Build breaks in Interops/Utils | Bump alone in its own PR; fix callers | +| `nfdriver.sys` is a signed prebuilt; Redirector is tied to it | Process mode breaks | Do not rebuild driver; only rebuild user-mode Redirector; test with RedirectorTester | +| Netfilter / wintun / tun2socks update changes behavior | TUN/process regressions | Pin versions + hashes; QA matrix per mode | +| Warnings-as-errors with newer analyzers | Many build errors on TFM bump | Fix per rule; suppress with justification in `.editorconfig`, not blanket `NoWarn` | +| Config JSON compatibility | Users lose servers/modes | Characterization tests (P1); upgrade case in QA | +| Single-file publish differences on new runtime | Startup/extract failures | Test on clean VM; keep `IncludeNativeLibrariesForSelfExtract` | +| CI toolchain drift (Go stable, Rust nightly, MSYS2 rolling) | Flaky, irreproducible builds | Pin versions; record in TASK P5 | +| GeoIP file downloaded from third party at build | Supply-chain / build break | Pin release tag + sha256 | +| Windows-only; cannot run elsewhere | Slow feedback | Keep Windows runners; keep unit tests platform-neutral where possible | diff --git a/.docs/TASK.md b/.docs/TASK.md new file mode 100644 index 0000000..6d89d37 --- /dev/null +++ b/.docs/TASK.md @@ -0,0 +1,166 @@ +# TASK — checklist + +Phases map to [PLAN.md](PLAN.md). One task per commit/PR. + +## P1 Baseline +- [x] Fix baseline build on SDK 10: `AssemblyInfo.cs` `SupportedOSPlatform` Windows7.0 → Windows8.1 (CA1416 on inet_pton/ntohs) +- [ ] Build `main` clean with `.\build.ps1`; save file list + sizes of `release\` +- [x] Tests: reference `Netrix` from `Tests` (project ref; Tests TFM moved to net6.0-windows + RollForward=Major, drop RollForward in P2) +- [x] Tests: share-link round-trip per protocol (WireGuard `[Ignore]`d, see Known bugs) +- [x] Tests: `Mode` JSON load/save round-trip for Process/TUN/Share +- [x] Tests: `Setting` default load from `{}` +- [x] CI: run `dotnet test` + +## P2 Framework +- [x] `common.props`, `Netrix.csproj`: `net10.0-windows` +- [x] `Tests.csproj`: same TFM (MSTest/Test.Sdk versions bump in P3) +- [x] `RedirectorTester` deleted (unused .NET Framework 4.8 harness, never run in CI); `Other/_Archive` (dead build scripts of removed components) deleted +- [x] Fix build errors/analyzer warnings: WFO1000 on `SyncGlobalCheckBox` (DesignerSerializationVisibility.Hidden) +- [x] `global.json`: `rollForward: latestFeature` +- [ ] Verify single-file self-contained publish runs on clean Win10/11 VM (publish succeeds locally: 190MB Netrix.exe; runtime launch untested) + +## P3 NuGet +- [x] `dotnet list package --outdated --vulnerable --deprecated` +- [x] Fody + ConfigureAwait.Fody +- [x] Serilog (+ Extensions.Hosting, Sinks.*) +- [x] CsWin32 beta to stable (0.3.360): HWND ctor, ADDRESS_FAMILY/WIN32_ERROR in RouteHelper.cs, PortHelper.cs rewritten with byte[] + fixed (also fixes unfreed AllocHGlobal). PortHelper covered by test; RouteHelper.CreateUnicastIPCS and console show/hide need manual QA (TUN mode) +- [x] MaxMind.GeoIP2, TaskScheduler, WindowsJobAPI, Stun.Net 10.0.10 (ProxyFactory.CreateProxy replaced by `new Socks5UdpProxy(...)`; NAT test needs manual QA with a real SOCKS5 server), HMBSbige.SingleInstance 7.0.0 (int command instead of string; handler marshals to UI thread via BeginInvoke; identifier is now plain `Netrix`, no `Global\` prefix so single-instance is per session; QA: second launch must focus the first window). WindowsFirewallHelper: already latest +- [x] System.* 7.0 to match TFM (Management, ServiceController; CodePages removed, in-box) +- [x] Microsoft.Diagnostics.Tracing.TraceEvent, VisualStudio.Threading +- [x] Dependabot: weekly, grouped (actions, Microsoft, Serilog, other NuGet, Go) + +## P4 Native + binaries +- [x] Redirector/RouteHelper rebuild: builds in CI (run 38080196958, windows-2022). +- [x] `Other/aiodns`: go 1.25.0, miekg/dns 1.1.73; c-shared build verified locally. Runtime check in QA (DNS section) +- [x] `Other/*` build in CI. `Other/pcap2socks` v0.6.2, `wintun` 0.13, `v2ray-sn` v5.0.16: URLs still resolve (HTTP 200). Version bumps not done (need Windows runtime testing). v2ray-sn needed Go 1.18 (SagerNet gVisor fork) and clash pinned to v1.11.0 (newest clash needs Go 1.20); both fixed in CI +- [x] `Storage/tun2socks.bin`, `nfdriver.sys`: documented. tun2socks.bin is a Netrix-specific c-shared build (go1.17.1), not an upstream exe; patch source not in repo, cannot refresh. nfdriver.sys 1.6.3.0 tied to Redirector +- [x] `Storage/README.md`: version + sha256 table +- [x] `build.ps1`: GeoIP download fails the build on error (`-ErrorAction Stop`). Not hash-pinned: Loyalsoldier `release` branch is rolling + +## P5 CI/CD +- [x] checkout@v4, cache@v4, setup-go@v5, setup-msbuild@v2, upload-artifact@v4, action-gh-release@v2, stale@v9, setup-dotnet@v4 (also added to release.yml) +- [x] Replace `actions-rs/toolchain` with `dtolnay/rust-toolchain@nightly` (still unpinned nightly; pin a dated nightly once pcap2socks builds are confirmed) +- [x] Drop `vs-prerelease: true` (vcxproj use v143 = VS2022 stable) +- [x] Add test step (build.yml) +- [ ] Artifact checksum +- [ ] `release.yml`: align with `build.yml`, verify tag flow on a fork +- [x] `dependabot.yml`: gomod directory `/Other/aiodns` + +## P6 Release +- [x] Dead code: analyzers flag none (remaining ~30 warnings are nullable/obsolete-API noise, left alone) +- [x] Update README (.NET version), CLAUDE.md (root imports .docs/CLAUDE.md). NOTICE.txt unchanged, no licensing change +- [ ] Full [QA.md](QA.md) pass on clean machine +- [ ] Tag RC, collect feedback, tag final + +## Known bugs found by tests (fixed unless noted) +- [x] Socks5 share link wrote password as `&user=`; now `&pass=` (parse threw on duplicate key) +- [x] `ShareLink.ParseUri` looked up util `"Socks5"`; TypeName is `"SOCKS"` +- [x] `ShareMode.Argument` was a field, dropped by JSON; now a property +- [x] WireGuard share link: was cast to `VMessServer` (throw) and parse threw too; now `wireguard://privkey@host:port?publickey=..&address=..&mtu=..[&presharedkey=..]#remark` +- [x] CI uses `windows-2022` runner; `setup-dotnet` 10 works there (build.yml green, see CI status) + +## CI status +- [x] `Netrix Build CI` green on `modernize-net10` (commit 2e945ec): build 188 s, tests pass, `release` artifact 97.2 MB +- [ ] `release.yml` carries the same Go 1.18 / .NET 10 changes but only runs on tag push; untested +- [ ] Compare artifact layout with a build of `main` (QA automated check) +- [x] WebRequest replaced by HttpClient (WebUtil; tests use a local HttpListener). Behaviour kept: non-2xx throws, timeout, UA, per-call proxy for subscriptions. Download body has no per-read timeout (WebRequest had ReadWriteTimeout) +- [ ] Failure diagnostics: build.yml wraps build.ps1 and emits an error annotation with the output tail (job logs need login); keep or drop + +## WebMode +- [x] `ModeType.WebMode` (appended, value 3), `WebMode` model (`Bypass`), `WebController` (HKCU Internet Settings + InternetSetOption), sample `Storage/mode/System Proxy.json`, tests (JSON round-trip, sample loads) +- [ ] Manual QA: start/stop sets and restores ProxyEnable/ProxyServer/ProxyOverride; browser traffic goes via proxy; behaviour with a SOCKS5-with-auth server (goes through local v2ray) +- [x] Crash recovery: previous proxy values saved to datawebmode.restore.json, restored by `WebController.RecoverAfterCrash()` after the single-instance check. Untested (needs a real crash + relaunch) +- [ ] No editor UI: edit the JSON file (MainForm opens it) + +## Update path +- [x] Rollback: a failed apply restores every `*.old` file (was: half-installed app). Test fails without it +- [x] Pick the asset whose name matches the hash table (was `assets[0]`); case-insensitive hash compare; delete a download with a wrong hash +- [x] Signature: releases are signed (ECDSA P-256, `sign.ps1`, GitHub secret `UPDATE_SIGNING_KEY`, asset `Netrix.7z.sig`); `Updater` flow refuses an unsigned or badly signed release (`UpdateSignature`, 4 tests + sign.ps1 round trip). Setup: add the secret from `update-signing.key`, then tag a release. Until a signed release exists the in-app update refuses and the user installs from the release page +- [ ] Not done: update runs inside the running process, no helper exe; real update still needs manual QA on Windows + +## Controller tests +- [x] `Guard` (start keyword, failed keyword, stop kills child) via a copied cmd.exe; `WebController` start/stop/crash-recover against a scratch registry key; `V2rayConfigUtils` outbound protocol per server type, inbound, socks auth, vmess address/port +- [ ] Not covered (need drivers/admin/real binaries): NFController, TUNController, PcapController, protocol controllers' real process start, MainController orchestration +- [x] Guard: a child that exits without a start/fail keyword now fails right away (was a 50 s wait); test added + +## tun2socks rewrite +- [x] `Other/tun2socks` rebuilt from the binary (see its RECOVERY.md); 4,541 of 4,547 shared functions have identical code size; unit tests pass +- [x] Wired in: `Other/tun2socks/build.ps1` -> `Other/release/tun2socks.bin` overrides `Storage/tun2socks.bin` in the release; CI installs Go 1.17.1 (`GO117`); verified with an isolated local run (same 4,680,192 byte output) +- [ ] Not verified: CI run with the new steps; TUN mode with the rebuilt DLL as admin with `wintun.dll` (nothing has been tested with real traffic) +- [ ] Rollback: delete `Other/tun2socks/build.ps1` to ship the original `Storage/tun2socks.bin` again + +## pcap2socks +- [x] Upstream archived: source vendored in `Other/pcap2socks/crate` (see `VENDORED.md`), deps updated, built from source by `Other/pcap2socks/build.ps1`; CI Rust toolchain is now stable +- [x] 11 upstream tests pass; CLI help/version/arg errors identical to v0.6.2 +- [ ] Not verified: real traffic through Share mode (needs Npcap); CI run of the new build step +- [ ] Rollback: restore the old build.ps1 (downloads the v0.6.2 release zip) + +## Found while testing on Windows (2026-10-11) +- [x] `aiodns` crashed Netrix when an upstream DNS lookup failed (`WriteMsg(nil)` panic, existed before the update): both handlers now answer SERVFAIL; test added +- [x] `tun2socks.bin` rewrite now writes Go panics and logs to `logging/tun2socks.log` (a GUI process has no console, so they were invisible) +- [x] TUN mode leaked IPv6 (YouTube over IPv6 never entered the tunnel, "Used" stayed at 700 KB): IPv6 address + `::/0` on-link route added to the adapter, setting `TUNTAP.ProxyIPv6` (default on). Owner reports TUN mode working +- [ ] Still untested on real traffic: Process mode, Share mode, WebMode, update/rollback, a second launch focusing the first window +- [x] IPv6 hang on servers without IPv6 egress (found 2026-10-11: curl to an AAAA host stalled through a Trojan server): `TUNController` probes `Socks5ServerTestUtils.IPv6WorksAsync` (5 s cap, CONNECT to Cloudflare IPv6 :80, needs data back). On failure the IPv6 route stays and `tun2socks` rejects IPv6 TCP/UDP (`TYPE_BLOCKIPV6`, `proxies.BlockIPv6`): RST at once, clients fall back to IPv4, no leak. Tests: 2 C# (fake SOCKS5), 1 Go. Not run in the real app +- [ ] IPv6 follow-ups: LAN-bypass rules are IPv4 only (IPv6 ULA/other local prefixes go into the tunnel), IPv6 DNS from the router bypasses aiodns, an IPv6-only server address disables the IPv6 route + +## Performance and optimization +Rule: measure first. Every item needs a before/after number from the same test, and one change per commit so a regression can be traced. + +### Benchmark harness (do first) +- [x] `.docs/bench.ps1 -Label `: curl download (1 and 16 streams), ping, DNS time, CPU, memory; appends to `.docs/PERF.md`. Direct vs TUN vs WebMode = switch mode by hand and rerun. iperf3 skipped (needs a server), add if the HTTPS test is too noisy +- [x] Fixed test server: defaults in the script (OVH 100 MB file, 1.1.1.1); results go to `.docs/PERF.md` +- [ ] Baseline numbers for the current build before touching anything + +### Network path (TUN mode: app -> wintun -> lwIP -> tun2socks -> SOCKS5 over loopback -> v2ray-sn -> server) +- [x] Relay buffer: `tools.CopyBuffer` copies in 1400 byte chunks (0x578), so every large transfer needs many small reads and writes; try 32 KiB or a pooled 64 KiB buffer and compare — done: 32 KiB per direction, not yet measured (needs TUN baseline) +- [x] lwIP limits in `core/c/custom/lwipopts.h`: `TCP_WND`/`TCP_SND_BUF` 32 KiB, `MEMP_NUM_TCP_PCB` 16, `MEM_SIZE` 128 KiB; check what limits single-stream speed and many-connection pages, raise only what the benchmark shows — done: only `TCP_WND`/`TCP_SND_BUF` matter (pools are malloc-backed so `MEMP_NUM_TCP_PCB`/`MEM_SIZE` are no-ops); `TCP_WND` raised to 0xffff (max without window scaling), not yet measured +- [x] SOCKS UDP: every UDP flow opens its own TCP control connection, handshake and local socket (cost on first packet, bad for QUIC and DNS bursts); try one association per handler, or a flow table with reuse — checked, no change: core keys UDP conns by local source ip:port only, so one association already serves all destinations of a socket (one handshake per local socket, not per packet); sharing across sockets cannot demux replies. Revisit only if the benchmark shows QUIC setup cost +- [x] UDP read buffer is 1500 bytes and the relay replies time out after 30 s of silence; check whether larger QUIC packets or long-lived flows are affected — checked, no change: reply = SOCKS header (<=22) + payload <= 1472 on a 1500 MTU, so 1500 does not truncate; an idle flow is simply recreated on the next packet +- [x] DNS: `adns` and `aiodns` open a new TCP (or TLS) connection per query; add UDP upstream or a persistent connection, and a response cache in `aiodns` — done: response cache (NOERROR only, TTL capped at 60 s, 4096 entries) in both; test in `aiodns/cache_test.go`. Not done: UDP upstream (changes proxy semantics) and a persistent connection (needs a pool); not yet measured +- [ ] Remove the loopback hop: tun2socks to v2ray-sn is SOCKS5 over TCP on 127.0.0.1; measure the cost, and compare with a core that has its own TUN (sing-box, see below) +- [ ] v2ray config: `UseMux` is off by default; measure mux, TCP fast open and keep-alive settings per transport (ws, grpc, tcp) before changing defaults — no code needed, both knobs already exist (Settings: Use Mux, TCP Fast Open; per-server Use Mux for VMess/VLESS); keep-alive has no setting, add only if the numbers ask for it. Protocol: same server, same mode, `bench.ps1 -Label tun-default`, then flip one knob and rerun (`tun-mux`, `tun-tfo`), per transport (ws, grpc, tcp). The new "40 small req ms" column is the one mux and TFO should move (connection setup); mux usually costs single-stream Mbps. Change a default only if a row shows a win without hurting the others +- [ ] Go runtime in the two DLLs (`aiodns.bin`, `tun2socks.bin`) and `v2ray-sn`: GC settings (`GOGC`, memory limit) and `GOMAXPROCS` when the machine is busy — no code needed to measure: nothing sets these today (defaults GOGC=100, no limit, GOMAXPROCS=all cores) and the Go runtime reads `GOGC`, `GOMEMLIMIT`, `GOMAXPROCS` from the environment, which Netrix, the two DLLs (loaded in-process) and `v2ray-sn` (child) all inherit. Protocol: `$env:GOGC=200; .\Netrix.exe` (or `GOMEMLIMIT=200MiB`, `GOMAXPROCS=2`), same server and mode, `bench.ps1 -Label tun-gogc200`; compare Mbps, CPU% and mem MB against `tun-default`. Hard-code (`debug.SetGCPercent`, `SetMemoryLimit` in `tun_init`/`aiodns_init`, env on the `v2ray-sn` start) only for a value that wins +- [ ] wintun: ring buffer size and packet batching in the read loop (`device.Read` one packet per call today) — checked, deferred: the pinned wireguard-go (2021) has a single-packet `Read` and ring size is fixed at 8 MiB in the library (`StartSession(0x800000)`, allowed 128 KiB to 64 MiB), already large for a 1500 MTU stream so no change planned; batching means upgrading wireguard-go (new `Read([][]byte)` API) — do only if the benchmark shows the read loop is CPU-bound +- [ ] MTU: 1500 on the adapter; check fragmentation against the server path (try 1400 and 1280 if tunnels over PPPoE or mobile) +- [x] Share mode (pcap2socks): same buffer/UDP questions, plus tokio worker threads and the LRU size (256 UDP ports) — checked in `Other/pcap2socks/crate`, no change: relay read buffers are already 64 KiB (`u16::MAX`), receive window is 64 KiB with window scaling up to 16 MiB; `#[tokio::main]` uses the default multi-thread runtime (one worker per core), nothing to tune for a per-connection task design; the 256-entry LRU (`MAX_UDP_PORT`) maps LAN-side UDP source ports to local sockets, only a device with more than 256 live UDP flows evicts, raise it only if one is seen. Not measurable without Npcap and a second device + +### Accuracy and cheap telemetry +- [x] Bandwidth counter: Netrix counts bytes with an ETW kernel trace of the `v2ray-sn` process only. `tun_getUP` and `tun_getDL` already exist in the DLL and are unused; use them for TUN mode (cheaper than ETW, includes upload, and counts what really crossed the tunnel) — done for TUN mode: `Bandwidth.NetTraffic` reads `tun_getDL` (download only; ETW still used for other modes). Not run against real traffic; upload display is the next item +- [x] Show upload and download speed separately — done for TUN mode (↓ and ↑ labels from `tun_getDL`/`tun_getUP`); other modes keep the single "↑↓" label because ETW only counts received bytes. Not run on real traffic + +### Startup and responsiveness +- [x] Time the start sequence (click Start to traffic flowing) and log each step — done in `MainController.StartAsync`: logs "Start step ...: N ms since click" after server DNS lookup, firewall/DNS cache, server controller and mode controller (4 laps, in the log file). Not broken down inside `TUNController` (adapter wait, routes, netsh): add laps there if the mode step dominates. Not run +- [ ] Routes: a mode like "Bypass LAN and China" adds thousands of routes one native call at a time; batch them or use a route table API that takes many entries — measure first: each rule is one direct `CreateIpForwardEntry2` call in `RouteHelper.bin` (no process or wait per call) and Windows has no bulk route API, so "batching" would only be parallel calls. `TUNController` now logs "Route table: N rules in M ms"; decide from that number (rule count x per-rule cost). Not run +- [x] `netsh.exe` is started to set the interface metric (a process per call); use the IP Helper API instead — done: `NetworkInterfaceUtils.SetInterfaceMetric` uses `GetIpInterfaceEntry`/`SetIpInterfaceEntry` (IPv4, null = automatic metric like netsh). Builds; not run (needs admin + TUN start; check the metric with `Get-NetIPInterface`) +- [x] Adapter wait loop polls 20 x 300 ms; wait on the adapter-added event instead — done by deletion: the loop ran before `tun_init` created the adapter and its result (`_tun.InterfaceIndex`) was overwritten right after by `TemplateBuilder`, so it only cost up to 6 s. The index comes from `tun_luid()`. Builds; not run +- [x] `wintun.dll` hash compare runs on every start; compare size and timestamp first — done: `TUNController.CheckDriver` returns early when size and write time match the installed copy (File.Copy keeps the time); hash path unchanged otherwise. Not run +- [x] Startup logging lists every running process and third-party driver and checks GitHub for updates; do the slow parts after the window is shown — mostly already true: drivers and processes are `Task.Run` and Debug-level only, update check and subscription update are fire-and-forget in `MainForm_Load`. Moved the one real cost, SHA256 of the whole exe (plus the Debug lists), to `MainForm.Shown` in `Program.cs`; version, OS and language lines still log before the window. Builds; not run +- [ ] Time to first window on a cold start of the 187 MB single-file exe (self-extract); try ReadyToRun and `EnableCompressionInSingleFile` trade-offs + +### Size and memory +- [ ] `Netrix.exe` is 187 MB self-contained; compare framework-dependent, trimming (WinForms limits), and compression for download size — measured (Release, win-x64, single file, 2026-10-11): self-contained 178.2 MB, self-contained + `EnableCompressionInSingleFile` 77.5 MB, framework-dependent 13.9 MB (needs the .NET 10 desktop runtime installed). Trimming not tried (WinForms is not trim-safe). Compression costs start-up time (assemblies inflate on every launch), so time the cold start of the 77.5 MB build before switching `build.ps1`; framework-dependent would cut the download 13x but changes the install requirement, owner decision +- [ ] Idle memory of `Netrix.exe` was about 180 MB while running; find what holds it (ETW session, form designer resources, logging) +- [ ] Lower background CPU when idle (timers, delay tests, subscription updates running in parallel) — partly done: the 10 s delay test (`DelayTestHelper`, pings every server, 16 at a time) now skips ticks while the window is in the tray or minimized. Subscription updates only run at open (`UpdateServersWhenOpened`), no periodic timer found. Not measured; builds + +### Next, in order (added 2026-10-11) +1. [ ] **Commit the work**: ~40 files are modified/untracked on `modernize-net10` (tun2socks rewrite, pcap2socks vendor, aiodns cache, perf changes, bench). One commit per task as the rules say; nothing is safe until committed +2. [ ] **Baseline numbers** (`bench.ps1 -Label baseline`, direct + TUN): every perf item marked "done, not measured" is unproven until this exists. Then compare buffer 32 KiB, `TCP_WND`, DNS cache one change at a time; revert any that do not win +3. [ ] **Real-traffic QA** for what is still untested: Process, Share, WebMode, update/rollback, second-launch focus, `SetInterfaceMetric` (`Get-NetIPInterface`), `CheckDriver` early return +4. [ ] **CI run** for the new tun2socks and pcap2socks build steps (Go 1.17.1 + Rust stable), then the tag flow of `release.yml` on a fork +5. [ ] **Release safety**: artifact checksum (P5); update signature (Update path, hash and file share one origin) +6. [ ] **Tests for new code**: `Bandwidth.NetTraffic` (TUN counters), `NetworkInterfaceUtils.SetInterfaceMetric`, `TUNController.CheckDriver` size/time shortcut. Only where a unit test can run without admin; the rest stays manual QA +7. [ ] **Owner decisions** (blockers, not work): framework-dependent vs self-contained vs compressed exe; sing-box prototype yes/no; drop `RedirectorTester` or port it +8. [ ] Small: IPv6 follow-ups (LAN bypass, router DNS, IPv6-only server) + +### Bigger option (decide before investing in the items above) +- [ ] sing-box as the core and TUN: it has its own TUN inbound, process-name routing and per-protocol speed work, and would replace tun2socks, wintun glue and the closed-source NetFilter driver. Loses ShadowsocksR, mKCP and legacy XTLS and needs a new config generator. Prototype for TUN mode only, compare with the harness numbers, then decide + + +## Rebrand to Netrix (2026-10-11) +- [x] Netch X -> Netrix: folders (`Netrix/`, `Netrix.sln`, `Netrix.csproj`), namespace, `Netrix.exe`, release archive `Netrix.7z` (top-level folder `Netrix`), UI text, tests, docs, CI +- [x] Repo `github.com/psnwd/netrix`: update checker (`UpdateChecker.Owner/Repo`), About, Help, `origin` remote +- [x] Logos in `.assets/`; app icon and About image generated from `.assets/Netrix.png` (`Netrix/Resources/Netrix.ico`, 16-256 px) +- [x] Removed: Telegram links/badges, `docs.netch.org`/`netch.org` links (no website yet), JetBrains sponsor block, About sponsor link. FAQ menu item is now "Report an issue" (GitHub issues) +- [x] Kept as credit: LICENSE, NOTICE.txt and README name the original Netch project (GPLv3 requires it) +- [ ] Upgrade note: Netrix is a new product for the updater: it does not update an old Netch install, and the Windows startup task, firewall rule names and single-instance id are now "Netrix" +- [ ] First release must be signed (see Update path) before in-app update works diff --git a/.docs/bench.ps1 b/.docs/bench.ps1 new file mode 100644 index 0000000..da0d515 --- /dev/null +++ b/.docs/bench.ps1 @@ -0,0 +1,46 @@ +# Benchmark one path (direct / TUN / WebMode). Switch Netrix mode by hand, then run: +# pwsh .docs\bench.ps1 -Label "tun-baseline" +# Appends a row to .docs\PERF.md. Keep -Url/-PingHost fixed so builds compare. +param( + [Parameter(Mandatory)][string]$Label, + [string]$Url = 'https://proof.ovh.net/files/100Mb.dat', + [string]$SmallUrl = 'https://www.cloudflare.com/cdn-cgi/trace', + [string]$PingHost = '1.1.1.1', + [string]$DnsName = 'example.com', + [string]$IpFlag = "-4", # IPv6 download hangs through the Trojan server; pass "" to test it + [int]$Streams = 16, + [string[]]$Procs = @('Netrix', 'v2ray-sn') +) +$ErrorActionPreference = 'Stop' + +function Get-Cpu { ($Procs | ForEach-Object { Get-Process $_ -ErrorAction Ignore } | Measure-Object CPU -Sum).Sum } +function Get-MemMB { [math]::Round((($Procs | ForEach-Object { Get-Process $_ -ErrorAction Ignore } | Measure-Object WorkingSet64 -Sum).Sum) / 1MB) } + +function Get-Mbps([int]$n) { + $cpu0 = Get-Cpu + $sw = [Diagnostics.Stopwatch]::StartNew() + $bytes = 1..$n | ForEach-Object -Parallel { + [long](curl.exe $using:IpFlag -s -o NUL -w "%{size_download}" --max-time 60 $using:Url) + } -ThrottleLimit $n | Measure-Object -Sum + $sw.Stop() + if (-not $bytes.Sum) { throw "download failed: $Url" } + [pscustomobject]@{ + Mbps = [math]::Round($bytes.Sum * 8 / 1e6 / $sw.Elapsed.TotalSeconds, 1) + Cpu = [math]::Round(((Get-Cpu) - $cpu0) / $sw.Elapsed.TotalSeconds * 100) # % of one core + } +} + +$ping = (Test-Connection $PingHost -Count 10 | Measure-Object Latency -Average).Average +$dns = (1..5 | ForEach-Object { (Measure-Command { Resolve-DnsName $DnsName -DnsOnly -NoHostsFile | Out-Null }).TotalMilliseconds } | Measure-Object -Average).Average +$one = Get-Mbps 1 +$many = Get-Mbps $Streams +# 40 tiny requests, 8 at a time, each a new connection: shows connection setup cost (what mux and TCP fast open change) +$small = [math]::Round((Measure-Command { 1..40 | ForEach-Object -Parallel { curl.exe $using:IpFlag -s -o NUL --max-time 30 $using:SmallUrl } -ThrottleLimit 8 }).TotalMilliseconds) + +$perf = Join-Path $PSScriptRoot 'PERF.md' +if (-not (Test-Path $perf)) { + "# Performance results`n`nCPU = % of one core summed over $($Procs -join ', ') during the run. Url/ping host fixed in bench.ps1 defaults.`n`n| date | label | 1 stream Mbps | CPU% | $Streams streams Mbps | CPU% | ping ms | dns ms | mem MB | 40 small req ms |`n|---|---|---|---|---|---|---|---|---|---|" | Set-Content $perf +} +$row = '| {0:yyyy-MM-dd HH:mm} | {1} | {2} | {3} | {4} | {5} | {6:N1} | {7:N0} | {8} | {9} |' -f (Get-Date), $Label, $one.Mbps, $one.Cpu, $many.Mbps, $many.Cpu, $ping, $dns, (Get-MemMB), $small +Add-Content $perf $row +$row diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000..a4beeb5 --- /dev/null +++ b/.gitattributes @@ -0,0 +1,8 @@ +* text=auto +*.png binary +*.ico binary +*.exe binary +*.dll binary +*.bin binary +*.sys binary +*.zip binary diff --git a/.github/ISSUE_TEMPLATE/bug_report.yml b/.github/ISSUE_TEMPLATE/bug_report.yml index aa130d6..bd45060 100644 --- a/.github/ISSUE_TEMPLATE/bug_report.yml +++ b/.github/ISSUE_TEMPLATE/bug_report.yml @@ -1,43 +1,43 @@ -name: Bug report -description: Create a report to help us improve -labels: bug -body: - - type: textarea - id: error - attributes: - label: Describe the bug - description: A clear and concise description of what the bug is. - validations: - required: true - - type: textarea - id: reproduce - attributes: - label: To Reproduce - placeholder: | - 1. Open Netch - 2. ... - validations: - required: true - - type: textarea - id: log - attributes: - label: Log - description: Attaching any log files in the folder `logging` is strongly recommended. - validations: - required: true - - type: textarea - id: environment - attributes: - label: Environment - render: txt - placeholder: | - - OS: [e.g. Windows 10 x64 Professional Workstation 20H2 19042.928] - - Netch Version: [e.g. 1.0.0] - validations: - required: true - - type: textarea - id: info - attributes: - label: Additional information - description: > - If you have any additional information for us, use the field below. +name: Bug report +description: Create a report to help us improve +labels: bug +body: + - type: textarea + id: error + attributes: + label: Describe the bug + description: A clear and concise description of what the bug is. + validations: + required: true + - type: textarea + id: reproduce + attributes: + label: To Reproduce + placeholder: | + 1. Open Netrix + 2. ... + validations: + required: true + - type: textarea + id: log + attributes: + label: Log + description: Attaching any log files in the folder `logging` is strongly recommended. + validations: + required: true + - type: textarea + id: environment + attributes: + label: Environment + render: txt + placeholder: | + - OS: [e.g. Windows 10 x64 Professional Workstation 20H2 19042.928] + - Netrix Version: [e.g. 1.0.0] + validations: + required: true + - type: textarea + id: info + attributes: + label: Additional information + description: > + If you have any additional information for us, use the field below. diff --git a/.github/ISSUE_TEMPLATE/bug_report.zh-CN.yml b/.github/ISSUE_TEMPLATE/bug_report.zh-CN.yml deleted file mode 100644 index 5b9a7ab..0000000 --- a/.github/ISSUE_TEMPLATE/bug_report.zh-CN.yml +++ /dev/null @@ -1,43 +0,0 @@ -name: 错误报告 -description: 创建错误报告以帮助我们改进 -labels: bug -body: - - type: textarea - id: error - attributes: - label: 错误描述 - description: 对错误的清晰简洁描述 - validations: - required: true - - type: textarea - id: reproduce - attributes: - label: 复现步骤 - placeholder: | - 1. 打开 Netch 软件 - 2. ... - validations: - required: true - - type: textarea - id: log - attributes: - label: 日志 - description: 强烈建议附上任何在 `logging` 文件夹下面的日志 - validations: - required: true - - type: textarea - id: environment - attributes: - label: 操作环境 - render: txt - placeholder: | - 操作系统：[Windows 10 x64 Professional Workstation 20H2 19042.928] - 软件版本：[1.0.0] - validations: - required: true - - type: textarea - id: info - attributes: - label: 额外信息 - description: > - 下面的文本框中你可以附上跟 issue 相关的截图、文件 diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml index e22a30b..3ba13e0 100644 --- a/.github/ISSUE_TEMPLATE/config.yml +++ b/.github/ISSUE_TEMPLATE/config.yml @@ -1,9 +1 @@ -blank_issues_enabled: false -contact_links: - - name: Telegram Channel - url: https://t.me/netch_channel - about: Telegram Channel - - - name: Telegram Group - url: https://t.me/netch_group - about: Telegram Group +blank_issues_enabled: false diff --git a/.github/ISSUE_TEMPLATE/feature_request.zh-CN.yml b/.github/ISSUE_TEMPLATE/feature_request.zh-CN.yml deleted file mode 100644 index 99f37c6..0000000 --- a/.github/ISSUE_TEMPLATE/feature_request.zh-CN.yml +++ /dev/null @@ -1,11 +0,0 @@ -name: 功能请求 -description: 建议这个项目的想法 -labels: enhancement -body: - - type: textarea - id: description - attributes: - label: 功能描述 - description: 简明扼要地描述需要的功能 - validations: - required: true diff --git a/.github/dependabot.yml b/.github/dependabot.yml index 84eb323..d394b69 100644 --- a/.github/dependabot.yml +++ b/.github/dependabot.yml @@ -1,26 +1,35 @@ -version: 2 -updates: - - package-ecosystem: "github-actions" - directory: "/" - schedule: - interval: "daily" - time: "00:00" - timezone: "Asia/Shanghai" - - - package-ecosystem: "nuget" - directory: "/" - schedule: - interval: "daily" - time: "00:00" - timezone: "Asia/Shanghai" - labels: - - "automatic" - - - package-ecosystem: "gomod" - directory: "/" - schedule: - interval: "daily" - time: "00:00" - timezone: "Asia/Shanghai" - labels: - - "automatic" +version: 2 +updates: + # weekly and grouped: one pull request per ecosystem instead of one per package per day + - package-ecosystem: "github-actions" + directory: "/" + schedule: + interval: "weekly" + groups: + actions: + patterns: ["*"] + + - package-ecosystem: "nuget" + directory: "/" + schedule: + interval: "weekly" + labels: + - "automatic" + groups: + microsoft: + patterns: ["Microsoft.*", "System.*"] + serilog: + patterns: ["Serilog*"] + other: + patterns: ["*"] + exclude-patterns: ["Microsoft.*", "System.*", "Serilog*"] + + - package-ecosystem: "gomod" + directory: "/Other/aiodns" + schedule: + interval: "weekly" + labels: + - "automatic" + groups: + go: + patterns: ["*"] diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml index f35b618..a080b7c 100644 --- a/.github/workflows/build.yml +++ b/.github/workflows/build.yml @@ -1,89 +1,160 @@ -name: Netch Build CI -on: [push, pull_request] - -jobs: - build: - name: Build - runs-on: windows-2022 - steps: - - name: Checkout - uses: actions/checkout@v3 - - - name: Checksum - shell: pwsh - run: | - echo "SOURCE_NETCH_SHA256=$(.\sha256.ps1 .\Netch)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV - echo "SOURCE_OTHER_SHA256=$(.\sha256.ps1 .\Other)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV - echo "SOURCE_REDIRECTOR_SHA256=$(.\sha256.ps1 .\Redirector)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV - echo "SOURCE_ROUTEHELPER_SHA256=$(.\sha256.ps1 .\RouteHelper)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV - - - name: Cache Netch - uses: actions/cache@v3 - with: - key: Netch-${{ runner.os }}-Netch-${{ env.SOURCE_NETCH_SHA256 }} - path: | - .\Netch\bin - - - name: Cache Other - uses: actions/cache@v3 - with: - key: Netch-${{ runner.os }}-Other-${{ env.SOURCE_OTHER_SHA256 }} - path: | - .\Other\release - - - name: Cache Redirector - uses: actions/cache@v3 - with: - key: Netch-${{ runner.os }}-Redirector-${{ env.SOURCE_REDIRECTOR_SHA256 }} - path: | - .\Redirector\bin - - - name: Cache RouteHelper - uses: actions/cache@v3 - with: - key: Netch-${{ runner.os }}-RouteHelper-${{ env.SOURCE_ROUTEHELPER_SHA256 }} - path: | - .\RouteHelper\bin - - - name: Check Other - id: check_other - uses: andstor/file-existence-action@v2 - with: - files: .\other\release\aiodns.bin - - - name: Setup Go - uses: actions/setup-go@v3 - if: steps.check_other.outputs.files_exists == 'false' - with: - go-version: stable - - - name: Setup C++ - uses: msys2/setup-msys2@v2 - if: steps.check_other.outputs.files_exists == 'false' - with: - update: true - release: true - install: base-devel git mingw-w64-x86_64-gcc mingw-w64-x86_64-cmake mingw-w64-x86_64-libevent mingw-w64-x86_64-pcre2 mingw-w64-x86_64-freetype mingw-w64-x86_64-libpng mingw-w64-x86_64-bzip2 mingw-w64-x86_64-openssl mingw-w64-x86_64-mbedtls mingw-w64-x86_64-libsodium mingw-w64-x86_64-c-ares mingw-w64-x86_64-boost mingw-w64-x86_64-libmariadbclient unzip p7zip autoconf automake libtool - - - name: Setup Rust - uses: actions-rs/toolchain@v1 - if: steps.check_other.outputs.files_exists == 'false' - with: - toolchain: nightly - profile: minimal - - - name: Setup MSBuild - uses: microsoft/setup-msbuild@v1.3.1 - with: - vs-prerelease: true - - - name: Build - shell: pwsh - run: | - .\build.ps1 -Configuration Release -OutputPath release - - - name: Upload - uses: actions/upload-artifact@v3 - with: - name: release - path: release +name: Netrix Build CI + +on: + push: + branches: [main] + pull_request: + workflow_dispatch: + workflow_call: # called by release.yml + +permissions: + contents: read + +# a newer push to the same branch makes the older run pointless; never cancel a tag (release) build +concurrency: + group: build-${{ github.ref }} + cancel-in-progress: ${{ !startsWith(github.ref, 'refs/tags/') }} + +jobs: + # the tests only need the .NET SDK: run them next to the slow native build instead of after it + test: + name: Test + runs-on: windows-2022 + steps: + - name: Checkout + uses: actions/checkout@v4 + + - name: Setup .NET + uses: actions/setup-dotnet@v4 + with: + dotnet-version: 10.0.x + + - name: Cache NuGet packages + uses: actions/cache@v4 + with: + key: nuget-${{ runner.os }}-${{ hashFiles('**/*.csproj', 'common.props', 'global.json') }} + restore-keys: nuget-${{ runner.os }}- + path: ~\.nuget\packages + + - name: Test + run: dotnet test .\Tests\Tests.csproj -p:Platform=x64 + + build: + name: Build + runs-on: windows-2022 + steps: + - name: Checkout + uses: actions/checkout@v4 + + # each cache is keyed by the sources (and build script) that produce it, build output folders excluded + - name: Cache Netrix + uses: actions/cache@v4 + with: + key: netrix-${{ runner.os }}-app-${{ hashFiles('Netrix/**', '!Netrix/bin/**', '!Netrix/obj/**', 'common.props', 'global.json', 'build.ps1') }} + path: Netrix\bin + + - name: Cache Other (tun2socks, aiodns, pcap2socks, v2ray-sn, wintun) + id: cache_other + uses: actions/cache@v4 + with: + key: netrix-${{ runner.os }}-other-${{ hashFiles('Other/**', '!Other/release/**', '!Other/pcap2socks/crate/target/**') }} + path: Other\release + + - name: Cache Redirector + uses: actions/cache@v4 + with: + key: netrix-${{ runner.os }}-redirector-${{ hashFiles('Redirector/**', '!Redirector/bin/**', '!Redirector/obj/**') }} + path: Redirector\bin + + - name: Cache RouteHelper + uses: actions/cache@v4 + with: + key: netrix-${{ runner.os }}-routehelper-${{ hashFiles('RouteHelper/**', '!RouteHelper/bin/**', '!RouteHelper/obj/**') }} + path: RouteHelper\bin + + - name: Cache NuGet packages + uses: actions/cache@v4 + with: + key: nuget-${{ runner.os }}-${{ hashFiles('**/*.csproj', 'common.props', 'global.json') }} + restore-keys: nuget-${{ runner.os }}- + path: ~\.nuget\packages + + # the toolchains below are only needed when Other\release was not restored from the cache + - name: Setup Go 1.17.1 (tun2socks) + uses: actions/setup-go@v5 + if: steps.cache_other.outputs.cache-hit != 'true' + with: + go-version: '1.17.1' + cache: false + + - name: Export Go 1.17.1 root + shell: pwsh + if: steps.cache_other.outputs.cache-hit != 'true' + run: | + echo "GO117=$(go env GOROOT)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV + + - name: Setup Go 1.18 (v2ray-sn) + uses: actions/setup-go@v5 + if: steps.cache_other.outputs.cache-hit != 'true' + with: + go-version: '1.18.10' + cache: false + + - name: Export Go 1.18 root + shell: pwsh + if: steps.cache_other.outputs.cache-hit != 'true' + run: | + echo "GO118=$(go env GOROOT)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV + + - name: Setup Go + uses: actions/setup-go@v5 + if: steps.cache_other.outputs.cache-hit != 'true' + with: + go-version: stable + + - name: Setup C++ + uses: msys2/setup-msys2@v2 + if: steps.cache_other.outputs.cache-hit != 'true' + with: + update: true + release: true + install: base-devel git mingw-w64-x86_64-gcc mingw-w64-x86_64-cmake mingw-w64-x86_64-libevent mingw-w64-x86_64-pcre2 mingw-w64-x86_64-freetype mingw-w64-x86_64-libpng mingw-w64-x86_64-bzip2 mingw-w64-x86_64-openssl mingw-w64-x86_64-mbedtls mingw-w64-x86_64-libsodium mingw-w64-x86_64-c-ares mingw-w64-x86_64-boost mingw-w64-x86_64-libmariadbclient unzip p7zip autoconf automake libtool + + - name: Setup Rust + uses: dtolnay/rust-toolchain@stable + if: steps.cache_other.outputs.cache-hit != 'true' + + - name: Setup .NET + uses: actions/setup-dotnet@v4 + with: + dotnet-version: 10.0.x + + - name: Setup MSBuild + uses: microsoft/setup-msbuild@v2 + + - name: Build + shell: pwsh + run: | + # job logs need a login to read; surface failures as public annotations + $log = Join-Path $env:GITHUB_WORKSPACE "build.log" # build scripts change the working directory + try { + .\build.ps1 -Configuration Release -Release *>&1 | Tee-Object -FilePath $log + $code = $LASTEXITCODE + $msg = "build.ps1 exit code $code" + } catch { + $code = 1 + $msg = ($_ | Out-String) + $_.ScriptStackTrace + } + if ($code -ne 0) { + $tail = if (Test-Path $log) { (Get-Content $log -Tail 30) -join "`n" } else { "" } + $text = ($msg + "`n---`n" + $tail) -replace "%","%25" -replace "`r","" -replace "`n","%0A" + echo "::error title=build failed::$text" + exit 1 + } + + - name: Upload + uses: actions/upload-artifact@v4 + with: + name: release + path: .build\release + retention-days: 7 diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml index 88b32ac..fee4980 100644 --- a/.github/workflows/release.yml +++ b/.github/workflows/release.yml @@ -1,108 +1,76 @@ -name: Netch Release CI -on: - push: - tags: - - '*.*.*' - -jobs: - build: - name: Build - runs-on: windows-2022 - steps: - - name: Checkout - uses: actions/checkout@v3 - - - name: Checksum - shell: pwsh - run: | - echo "SOURCE_NETCH_SHA256=$(.\sha256.ps1 .\Netch)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV - echo "SOURCE_OTHER_SHA256=$(.\sha256.ps1 .\Other)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV - echo "SOURCE_REDIRECTOR_SHA256=$(.\sha256.ps1 .\Redirector)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV - echo "SOURCE_ROUTEHELPER_SHA256=$(.\sha256.ps1 .\RouteHelper)" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV - - - name: Cache Netch - uses: actions/cache@v3 - with: - key: Netch-${{ runner.os }}-Netch-${{ env.SOURCE_NETCH_SHA256 }} - path: | - .\Netch\bin - - - name: Cache Redirector - uses: actions/cache@v3 - with: - key: Netch-${{ runner.os }}-Redirector-${{ env.SOURCE_REDIRECTOR_SHA256 }} - path: | - .\Redirector\bin - - - name: Cache RouteHelper - uses: actions/cache@v3 - with: - key: Netch-${{ runner.os }}-RouteHelper-${{ env.SOURCE_ROUTEHELPER_SHA256 }} - path: | - .\RouteHelper\bin - - - name: Check Other - id: check_other - uses: andstor/file-existence-action@v2 - with: - files: .\other\release\aiodns.bin - - - name: Setup Go - uses: actions/setup-go@v3 - if: steps.check_other.outputs.files_exists == 'false' - with: - go-version: stable - - - name: Setup C++ - uses: msys2/setup-msys2@v2 - if: steps.check_other.outputs.files_exists == 'false' - with: - update: true - release: true - install: base-devel git mingw-w64-x86_64-gcc mingw-w64-x86_64-cmake mingw-w64-x86_64-libevent mingw-w64-x86_64-pcre2 mingw-w64-x86_64-freetype mingw-w64-x86_64-libpng mingw-w64-x86_64-bzip2 mingw-w64-x86_64-openssl mingw-w64-x86_64-mbedtls mingw-w64-x86_64-libsodium mingw-w64-x86_64-c-ares mingw-w64-x86_64-boost mingw-w64-x86_64-libmariadbclient unzip p7zip autoconf automake libtool - - - name: Setup Rust - uses: actions-rs/toolchain@v1 - if: steps.check_other.outputs.files_exists == 'false' - with: - toolchain: nightly - profile: minimal - - - name: Build - shell: pwsh - run: | - .\build.ps1 -Configuration Release -OutputPath release - - - name: Package - shell: pwsh - run: | - 7z a -mx9 Netch.7z release - 7z rn Netch.7z release Netch - - - name: Checksum - shell: pwsh - run: | - $hash=(Get-FileHash Netch.7z -Algorithm SHA256).Hash.ToLower() - echo "NETCH_SHA256=$hash" | Out-File -Append -Encoding UTF8 -FilePath $Env:GITHUB_ENV - - - name: Release - uses: softprops/action-gh-release@v1 - env: - GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} - with: - prerelease: ${{ contains(github.ref, '-') }} - draft: false - files: | - Netch.7z - body: | - [![](https://img.shields.io/badge/Telegram-Channel-blue)](https://t.me/netch_channel) [![](https://img.shields.io/badge/Telegram-Group-green)](https://t.me/netch_group) - ## Changelogs - * This is an automated deployment of GitHub Actions, the change log should be updated manually soon - - ## 更新日志 - * 这是 GitHub Actions 自动化部署，更新日志应该很快会手动更新 - - ## 校验和 - | 文件名 | SHA256 | - | :- | :- | - | Netch.7z | ${{ env.Netch_SHA256 }} | +name: Netrix Release CI + +on: + push: + tags: + - '*.*.*' + +permissions: + contents: read + +jobs: + # same build and tests as every push: one definition, see build.yml + build: + name: Build + uses: ./.github/workflows/build.yml + + release: + name: Release + needs: build + runs-on: windows-2022 + permissions: + contents: write # create the release + steps: + - name: Checkout + uses: actions/checkout@v4 + + - name: Download build + uses: actions/download-artifact@v4 + with: + name: release + path: .build\release + + - name: Package + shell: pwsh + run: | + Push-Location .build + 7z a -mx9 ..\Netrix.7z release + 7z rn ..\Netrix.7z release Netrix + Pop-Location + + # the secret is the private half of the key in Netrix/Services/UpdateSignature.cs; without it this step fails on purpose + - name: Sign + shell: pwsh + env: + UPDATE_SIGNING_KEY: ${{ secrets.UPDATE_SIGNING_KEY }} + run: | + .\sign.ps1 -File Netrix.7z + + # release notes = this version's section of CHANGELOG.md + the checksum table the in-app updater reads ("Checksums" heading, then the table) + - name: Release notes + shell: pwsh + run: | + $version = '${{ github.ref_name }}'.TrimStart('v', 'V') + $changelog = Get-Content CHANGELOG.md -Raw + $pattern = "(?s)## \[$([regex]::Escape($version))\][^\r\n]*\r?\n(.*?)(?=\r?\n## \[|\r?\n\[[0-9])" + $notes = if ($changelog -match $pattern) { $Matches[1].Trim() } else { 'See CHANGELOG.md.' } + $hash = (Get-FileHash Netrix.7z -Algorithm SHA256).Hash.ToLower() + @" + ## Changelog + $notes + + ## Checksums + | File | SHA256 | + | :- | :- | + | Netrix.7z | $hash | + "@ | Set-Content release-notes.md -Encoding UTF8 + + - name: Release + uses: softprops/action-gh-release@v2 + with: + prerelease: ${{ contains(github.ref_name, '-') }} + draft: false + body_path: release-notes.md + files: | + Netrix.7z + Netrix.7z.sig diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml index 61843ea..334decc 100644 --- a/.github/workflows/stale.yml +++ b/.github/workflows/stale.yml @@ -10,7 +10,7 @@ jobs: issues: write pull-requests: write steps: - - uses: actions/stale@v7 + - uses: actions/stale@v9 with: days-before-issue-stale: 30 days-before-issue-close: 14 diff --git a/.gitignore b/.gitignore index a54dcc6..1a77d76 100644 --- a/.gitignore +++ b/.gitignore @@ -1,5 +1,9 @@ -/.vs -/.idea -/release -/packages -/TestResults +/.vs +/.idea +/packages +/TestResults + +/.build + +# release signing key, see sign.ps1 +update-signing.key diff --git a/CHANGELOG.md b/CHANGELOG.md new file mode 100644 index 0000000..b8e5162 --- /dev/null +++ b/CHANGELOG.md @@ -0,0 +1,61 @@ +# Changelog + +All notable changes to Netrix. The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/). + +## [2.0.0] - 2026-10-11 + +Netrix is a fork of [Netch](https://github.com/NetchX/Netch) 1.9.7 by AmazingDM and contributors. Version 2.0.0 moves the project to .NET 10, rebuilds the bundled helper programs from source, and adds a new name, logo, documentation and tests. + +### Added +- **Web mode**: sets the Windows system proxy and restores the old values when you stop, even after a crash. +- **IPv6 in TUN mode** (`ProxyIPv6`, on by default). IPv6 now goes through the tunnel instead of bypassing it. If the server has no working IPv6 path, Netrix detects it at start and rejects IPv6 connections so apps fall back to IPv4 at once. +- **Download and upload speed** shown separately in TUN mode, read from the tunnel itself. +- **Built-in Help window** (Help > Documentation) with topics for servers, modes, skipping apps and IPs, the status bar, files and troubleshooting. +- **Tooltips** on the main window, Settings, the mode editors and the Subscription window. +- **Signed updates**: releases are signed with an ECDSA P-256 key (`sign.ps1`); the app refuses an unsigned or badly signed update. +- **Global Bypass Apps** sample mode: proxy everything except a list of apps. +- **DNS response cache** in aiodns and the tun2socks DNS handler. +- **Benchmark script** `.docs/bench.ps1` and results in `.docs/PERF.md`. +- **Tests**: 41 unit tests (share links, mode and settings JSON, controllers, updater, signatures, IPv6 probe, update checker). +- Keyboard shortcuts: Enter saves Settings, Esc closes Help and About. +- `.\build.ps1 -Release` builds into `.build\release`; the default builds into `.build\dev`. +- `CHANGELOG.md`. + +### Changed +- **Renamed Netch X to Netrix**: project, namespace, folders, executable (`Netrix.exe`), release archive (`Netrix.7z`), window text, new logo and icon. The original Netch is credited in the README and `NOTICE.txt`. +- **.NET 6 to .NET 10** (x64); NuGet packages refreshed (Serilog, CsWin32 stable, MaxMind, TraceEvent, Stun.Net, SingleInstance and others). +- **tun2socks** is rebuilt from recovered source (`Other/tun2socks`): larger relay buffer, larger TCP window, panics and logs written to `logging\tun2socks.log`. +- **pcap2socks** source is vendored (`Other/pcap2socks`) and built from source; the upstream project is archived. +- **aiodns**: Go 1.25 and miekg/dns 1.1.73. +- The interface metric is set with the Windows IP Helper API instead of starting `netsh.exe`. +- `WebRequest` replaced by `HttpClient`. +- Default STUN server is `stun.1und1.de`; the server list only has servers that support the NAT test (`stun.1und1.de`, `stun.miwifi.com`, `stun.fitauto.ru`). +- Font is Segoe UI. +- Start-up: the slow logging work runs after the window is shown; the delay test pauses while the window is minimized or in the tray; the `wintun.dll` check skips hashing when size and time match. +- CI: GitHub Actions updated; tests run in their own job next to the build; caches keyed with `hashFiles`; `release.yml` reuses `build.yml` and takes its release notes from this file; Dependabot is weekly and grouped. +- The update checker and links point to `github.com/psnwd/netrix`. +- All Chinese comments and developer messages translated to English. The Chinese interface translation (`zh-CN`) is unchanged. +- README rewritten. + +### Fixed +- aiodns crashed Netrix when an upstream DNS lookup failed. +- TUN mode leaked IPv6 traffic outside the tunnel. +- IPv6 connections hung when the server had no IPv6 path. +- Stop could leave the window stuck in "Stopping" or throw when the helper process had already died; each part now stops on its own with a 15 s limit, and route cleanup steps no longer skip each other. +- A helper process that exits before printing a start keyword now fails at once instead of after a 50 s wait. +- Share links: SOCKS5 wrote the password as `&user=`; the SOCKS5 type name did not match; WireGuard links threw on write and parse; `ShareMode.Argument` was not saved. +- Update: a failed apply now restores every `.old` file; the asset is picked by name, not first in the list; a download with the wrong hash is deleted. +- The update check threw when the repository had no releases. +- The Help window opens in the centre of the screen. +- Unfreed memory in the port helper. + +### Security +- Updates are verified with a signature, not only a hash from the same release. +- `TLS AllowInsecure` has a warning in its tooltip. + +### Removed +- Telegram links and badges, and the website links (there is no site yet). +- `RedirectorTester` (unused .NET Framework test harness) and `Other/_Archive` (build scripts of removed components). +- The Chinese issue templates and the JetBrains sponsor block. + +[2.0.0]: https://github.com/psnwd/netrix/releases/tag/2.0.0 diff --git a/CLAUDE.md b/CLAUDE.md new file mode 100644 index 0000000..4cd3595 --- /dev/null +++ b/CLAUDE.md @@ -0,0 +1 @@ +@.docs/CLAUDE.md diff --git a/Netch/Forms/AboutForm.cs b/Netch/Forms/AboutForm.cs deleted file mode 100644 index 2583755..0000000 --- a/Netch/Forms/AboutForm.cs +++ /dev/null @@ -1,34 +0,0 @@ -using Netch.Properties; -using Netch.Utils; - -namespace Netch.Forms; - -[Fody.ConfigureAwait(true)] -public partial class AboutForm : Form -{ - public AboutForm() - { - InitializeComponent(); - Icon = Resources.icon; - } - - private void AboutForm_Load(object sender, EventArgs e) - { - i18N.TranslateForm(this); - } - - private void NetchPictureBox_Click(object sender, EventArgs e) - { - Utils.Utils.Open("https://github.com/NetchX/Netch"); - } - - private void ChannelLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) - { - Utils.Utils.Open("https://t.me/Netch"); - } - - private void SponsorPictureBox_Click(object sender, EventArgs e) - { - Utils.Utils.Open("https://www.mansora.co"); - } -} \ No newline at end of file diff --git a/Netch/Models/Modes/ModeType.cs b/Netch/Models/Modes/ModeType.cs deleted file mode 100644 index ddba2c4..0000000 --- a/Netch/Models/Modes/ModeType.cs +++ /dev/null @@ -1,19 +0,0 @@ -namespace Netch.Models.Modes; - -public enum ModeType -{ - /// - /// 进程代理 - /// - ProcessMode, - - /// - /// 网络共享 - /// - ShareMode, - - /// - /// 网卡代理 - /// - TunMode -} \ No newline at end of file diff --git a/Netch/Models/Modes/ShareMode/ShareMode.cs b/Netch/Models/Modes/ShareMode/ShareMode.cs deleted file mode 100644 index 954045a..0000000 --- a/Netch/Models/Modes/ShareMode/ShareMode.cs +++ /dev/null @@ -1,8 +0,0 @@ -namespace Netch.Models.Modes.ShareMode; - -public class ShareMode : Mode -{ - public override ModeType Type => ModeType.ShareMode; - - public string Argument = "--preset uu"; -} \ No newline at end of file diff --git a/Netch/Properties/AssemblyInfo.cs b/Netch/Properties/AssemblyInfo.cs deleted file mode 100644 index 7bb236e..0000000 --- a/Netch/Properties/AssemblyInfo.cs +++ /dev/null @@ -1,38 +0,0 @@ -using System.Reflection; -using System.Runtime.InteropServices; -using Netch.Controllers; - -// 有关程序集的一般信息由以下 -// 控制。更改这些特性值可修改 -// 与程序集关联的信息。 -[assembly: AssemblyTitle(UpdateChecker.Name)] -[assembly: AssemblyDescription("")] -[assembly: AssemblyConfiguration("")] -[assembly: AssemblyCompany("")] -[assembly: AssemblyProduct(UpdateChecker.Name)] -[assembly: AssemblyCopyright(UpdateChecker.Copyright)] -[assembly: AssemblyTrademark("")] -[assembly: AssemblyCulture("")] -[assembly: System.Runtime.Versioning.SupportedOSPlatformAttribute("Windows7.0")] -[assembly: Fody.ConfigureAwait(false)] - -// 将 ComVisible 设置为 false 会使此程序集中的类型 -//对 COM 组件不可见。如果需要从 COM 访问此程序集中的类型 -//请将此类型的 ComVisible 特性设置为 true。 -[assembly: ComVisible(false)] - -// 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID -[assembly: Guid("4b041b91-5790-4571-8c58-c63ffe4bc9f8")] - -// 程序集的版本信息由下列四个值组成: -// -// 主版本 -// 次版本 -// 生成号 -// 修订号 -// -//可以指定所有这些值，也可以使用“生成号”和“修订号”的默认值 -//通过使用 "*"，如下所示: -// [assembly: AssemblyVersion("1.0.*")] -[assembly: AssemblyVersion(UpdateChecker.AssemblyVersion)] -// [assembly: AssemblyFileVersion("1.0.0.0")] \ No newline at end of file diff --git a/Netch/Resources/Netch.ico b/Netch/Resources/Netch.ico deleted file mode 100644 index 9135947..0000000 Binary files a/Netch/Resources/Netch.ico and /dev/null differ diff --git a/Netch/Resources/Netch.png b/Netch/Resources/Netch.png deleted file mode 100644 index 1cb4c05..0000000 Binary files a/Netch/Resources/Netch.png and /dev/null differ diff --git a/Netch/Resources/NetchTrayIcon.png b/Netch/Resources/NetchTrayIcon.png deleted file mode 100644 index 81ffdea..0000000 Binary files a/Netch/Resources/NetchTrayIcon.png and /dev/null differ diff --git a/Netch/Servers/WireGuard/WireGuardUtil.cs b/Netch/Servers/WireGuard/WireGuardUtil.cs deleted file mode 100644 index e7bcb44..0000000 --- a/Netch/Servers/WireGuard/WireGuardUtil.cs +++ /dev/null @@ -1,53 +0,0 @@ -using System.Text.Encodings.Web; -using System.Text.Json; -using System.Text.Json.Serialization; -using Netch.Interfaces; -using Netch.Models; -using Netch.Utils; - -namespace Netch.Servers; - -public class WireGuardUtil : IServerUtil -{ - public ushort Priority { get; } = 4; - - public string TypeName { get; } = "WireGuard"; - - public string FullName { get; } = "WireGuard"; - - public string ShortName { get; } = "WG"; - - public string[] UriScheme { get; } = { "wireguard" }; - - public Type ServerType { get; } = typeof(WireGuardServer); - - public void Edit(Server s) - { - new WireGuardForm((WireGuardServer)s).ShowDialog(); - } - - public void Create() - { - new WireGuardForm().ShowDialog(); - } - - public string GetShareLink(Server s) - { - return V2rayUtils.GetVShareLink(s, "wireguard"); - } - - public IServerController GetController() - { - return new V2rayController(); - } - - public IEnumerable ParseUri(string text) - { - return V2rayUtils.ParseVUri(text); - } - - public bool CheckServer(Server s) - { - return true; - } -} \ No newline at end of file diff --git a/Netch/Utils/WebUtil.cs b/Netch/Utils/WebUtil.cs deleted file mode 100644 index bd77541..0000000 --- a/Netch/Utils/WebUtil.cs +++ /dev/null @@ -1,100 +0,0 @@ -using System.Net; -using System.Text; -using Microsoft.VisualStudio.Threading; - -namespace Netch.Utils; - -public static class WebUtil -{ - public const string DefaultUserAgent = - @"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36 Edg/94.0.992.31"; - - static WebUtil() - { - ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12; - } - - private static int DefaultGetTimeout => Global.Settings.RequestTimeout; - - public static HttpWebRequest CreateRequest(string url, int? timeout = null, string? userAgent = null) - { - var req = (HttpWebRequest)WebRequest.Create(url); - req.UserAgent = string.IsNullOrWhiteSpace(userAgent) ? DefaultUserAgent : userAgent; - req.Accept = "*/*"; - req.KeepAlive = true; - req.Timeout = timeout ?? DefaultGetTimeout; - req.ReadWriteTimeout = timeout ?? DefaultGetTimeout; - req.Headers.Add("Accept-Charset", "utf-8"); - return req; - } - - public static async Task DownloadBytesAsync(HttpWebRequest req) - { - using var webResponse = await req.GetResponseAsync(); - var memoryStream = new MemoryStream(); - await using (memoryStream) - { - var input = webResponse.GetResponseStream(); - await using (input) - { - await input.CopyToAsync(memoryStream); - return memoryStream.ToArray(); - } - } - } - - public static async Task<(HttpStatusCode, string)> DownloadStringAsync(HttpWebRequest req, Encoding? encoding = null) - { - encoding ??= Encoding.UTF8; - using var webResponse = (HttpWebResponse)await req.GetResponseAsync(); - - var responseStream = webResponse.GetResponseStream(); - await using (responseStream) - { - using var streamReader = new StreamReader(responseStream, encoding); - - return (webResponse.StatusCode, await streamReader.ReadToEndAsync()); - } - } - - public static Task DownloadFileAsync(string address, string fileFullPath, IProgress? progress = null) - { - return DownloadFileAsync(CreateRequest(address), fileFullPath, progress); - } - - public static async Task DownloadFileAsync(HttpWebRequest req, string fileFullPath, IProgress? progress) - { - var fileStream = new FileStream(fileFullPath, FileMode.Create, FileAccess.Write, FileShare.None, 4096, true); - await using (fileStream) - { - using var webResponse = (HttpWebResponse)await req.GetResponseAsync(); - var input = webResponse.GetResponseStream(); - await using (input) - { - using var downloadTask = input.CopyToAsync(fileStream); - if (progress != null) - ReportProgressAsync(webResponse.ContentLength, downloadTask, fileStream, progress, 200).Forget(); - - await downloadTask; - } - } - - progress?.Report(100); - } - - private static async Task ReportProgressAsync(long total, IAsyncResult downloadTask, Stream stream, IProgress progress, int interval) - { - var n = 0; - while (!downloadTask.IsCompleted) - { - var n1 = (int)((double)stream.Length / total * 100); - if (n != n1) - { - n = n1; - progress.Report(n); - } - - await Task.Delay(interval); - } - } -} \ No newline at end of file diff --git a/Netch.sln b/Netrix.sln similarity index 76% rename from Netch.sln rename to Netrix.sln index b7b009e..e85b194 100644 --- a/Netch.sln +++ b/Netrix.sln @@ -1,58 +1,49 @@ - -Microsoft Visual Studio Solution File, Format Version 12.00 -# Visual Studio Version 17 -VisualStudioVersion = 17.0.31808.319 -MinimumVisualStudioVersion = 10.0.40219.1 -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Netch", "Netch\Netch.csproj", "{A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}" - ProjectSection(ProjectDependencies) = postProject - {9142C528-9E42-448D-96B6-7E62E47B54F3} = {9142C528-9E42-448D-96B6-7E62E47B54F3} - {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} = {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} - {7374F7F4-1732-4DED-A603-8335F6704F10} = {7374F7F4-1732-4DED-A603-8335F6704F10} - EndProjectSection -EndProject -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Tests", "Tests\Tests.csproj", "{09222C6B-2FFB-4DA7-BC75-CB0A80086711}" - ProjectSection(ProjectDependencies) = postProject - {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3} = {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3} - {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} = {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} - {7374F7F4-1732-4DED-A603-8335F6704F10} = {7374F7F4-1732-4DED-A603-8335F6704F10} - EndProjectSection -EndProject -Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Redirector", "Redirector\Redirector.vcxproj", "{1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74}" -EndProject -Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "RouteHelper", "RouteHelper\RouteHelper.vcxproj", "{7374F7F4-1732-4DED-A603-8335F6704F10}" -EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RedirectorTester", "RedirectorTester\RedirectorTester.csproj", "{9142C528-9E42-448D-96B6-7E62E47B54F3}" - ProjectSection(ProjectDependencies) = postProject - {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} = {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} - EndProjectSection -EndProject -Global - GlobalSection(SolutionConfigurationPlatforms) = preSolution - Debug|x64 = Debug|x64 - Release|x64 = Release|x64 - EndGlobalSection - GlobalSection(ProjectConfigurationPlatforms) = postSolution - {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}.Debug|x64.ActiveCfg = Debug|x64 - {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}.Debug|x64.Build.0 = Debug|x64 - {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}.Release|x64.ActiveCfg = Release|x64 - {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}.Release|x64.Build.0 = Release|x64 - {09222C6B-2FFB-4DA7-BC75-CB0A80086711}.Debug|x64.ActiveCfg = Debug|x64 - {09222C6B-2FFB-4DA7-BC75-CB0A80086711}.Release|x64.ActiveCfg = Release|x64 - {09222C6B-2FFB-4DA7-BC75-CB0A80086711}.Release|x64.Build.0 = Release|x64 - {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74}.Debug|x64.ActiveCfg = Debug|x64 - {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74}.Release|x64.ActiveCfg = Release|x64 - {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74}.Release|x64.Build.0 = Release|x64 - {7374F7F4-1732-4DED-A603-8335F6704F10}.Debug|x64.ActiveCfg = Debug|x64 - {7374F7F4-1732-4DED-A603-8335F6704F10}.Release|x64.ActiveCfg = Release|x64 - {7374F7F4-1732-4DED-A603-8335F6704F10}.Release|x64.Build.0 = Release|x64 - {9142C528-9E42-448D-96B6-7E62E47B54F3}.Debug|x64.ActiveCfg = Debug|x64 - {9142C528-9E42-448D-96B6-7E62E47B54F3}.Release|x64.ActiveCfg = Release|x64 - {9142C528-9E42-448D-96B6-7E62E47B54F3}.Release|x64.Build.0 = Release|x64 - EndGlobalSection - GlobalSection(SolutionProperties) = preSolution - HideSolutionNode = FALSE - EndGlobalSection - GlobalSection(ExtensibilityGlobals) = postSolution - SolutionGuid = {1E271FD7-9623-47D5-B3AF-309BC23CB48E} - EndGlobalSection -EndGlobal + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio Version 17 +VisualStudioVersion = 17.0.31808.319 +MinimumVisualStudioVersion = 10.0.40219.1 +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Netrix", "Netrix\Netrix.csproj", "{A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}" + ProjectSection(ProjectDependencies) = postProject + {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} = {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} + {7374F7F4-1732-4DED-A603-8335F6704F10} = {7374F7F4-1732-4DED-A603-8335F6704F10} + EndProjectSection +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Tests", "Tests\Tests.csproj", "{09222C6B-2FFB-4DA7-BC75-CB0A80086711}" + ProjectSection(ProjectDependencies) = postProject + {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3} = {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3} + {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} = {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74} + {7374F7F4-1732-4DED-A603-8335F6704F10} = {7374F7F4-1732-4DED-A603-8335F6704F10} + EndProjectSection +EndProject +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Redirector", "Redirector\Redirector.vcxproj", "{1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74}" +EndProject +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "RouteHelper", "RouteHelper\RouteHelper.vcxproj", "{7374F7F4-1732-4DED-A603-8335F6704F10}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|x64 = Debug|x64 + Release|x64 = Release|x64 + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}.Debug|x64.ActiveCfg = Debug|x64 + {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}.Debug|x64.Build.0 = Debug|x64 + {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}.Release|x64.ActiveCfg = Release|x64 + {A193DF89-ADCF-4DB4-B75C-729C8BA8A9F3}.Release|x64.Build.0 = Release|x64 + {09222C6B-2FFB-4DA7-BC75-CB0A80086711}.Debug|x64.ActiveCfg = Debug|x64 + {09222C6B-2FFB-4DA7-BC75-CB0A80086711}.Release|x64.ActiveCfg = Release|x64 + {09222C6B-2FFB-4DA7-BC75-CB0A80086711}.Release|x64.Build.0 = Release|x64 + {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74}.Debug|x64.ActiveCfg = Debug|x64 + {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74}.Release|x64.ActiveCfg = Release|x64 + {1676DEF3-FBE4-47D2-93A6-8F85EA2F5B74}.Release|x64.Build.0 = Release|x64 + {7374F7F4-1732-4DED-A603-8335F6704F10}.Debug|x64.ActiveCfg = Debug|x64 + {7374F7F4-1732-4DED-A603-8335F6704F10}.Release|x64.ActiveCfg = Release|x64 + {7374F7F4-1732-4DED-A603-8335F6704F10}.Release|x64.Build.0 = Release|x64 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection + GlobalSection(ExtensibilityGlobals) = postSolution + SolutionGuid = {1E271FD7-9623-47D5-B3AF-309BC23CB48E} + EndGlobalSection +EndGlobal diff --git a/Netch/.gitignore b/Netrix/.gitignore similarity index 100% rename from Netch/.gitignore rename to Netrix/.gitignore diff --git a/Netch/App.manifest b/Netrix/App.manifest similarity index 100% rename from Netch/App.manifest rename to Netrix/App.manifest diff --git a/Netch/Constants.cs b/Netrix/Constants.cs similarity index 93% rename from Netch/Constants.cs rename to Netrix/Constants.cs index c94e885..c638f5d 100644 --- a/Netch/Constants.cs +++ b/Netrix/Constants.cs @@ -1,4 +1,4 @@ -namespace Netch; +namespace Netrix; public static class Constants { @@ -18,7 +18,6 @@ public static class Constants public static class Parameter { - public const string Show = "-show"; public const string ForceUpdate = "-forceUpdate"; } diff --git a/Netch/Controllers/DNSController.cs b/Netrix/Controllers/DNSController.cs similarity index 85% rename from Netch/Controllers/DNSController.cs rename to Netrix/Controllers/DNSController.cs index cb5cad0..36ff55f 100644 --- a/Netch/Controllers/DNSController.cs +++ b/Netrix/Controllers/DNSController.cs @@ -1,8 +1,8 @@ -using Netch.Interfaces; -using Netch.Models; -using static Netch.Interops.AioDNS; +using Netrix.Interfaces; +using Netrix.Models; +using static Netrix.Interops.AioDNS; -namespace Netch.Controllers; +namespace Netrix.Controllers; public class DNSController : IController { diff --git a/Netch/Controllers/Guard.cs b/Netrix/Controllers/Guard.cs similarity index 78% rename from Netch/Controllers/Guard.cs rename to Netrix/Controllers/Guard.cs index 76fe828..0fdfad3 100644 --- a/Netch/Controllers/Guard.cs +++ b/Netrix/Controllers/Guard.cs @@ -1,18 +1,18 @@ using System.Diagnostics; using System.Text; using Microsoft.VisualStudio.Threading; -using Netch.Enums; -using Netch.Models; -using Netch.Utils; +using Netrix.Enums; +using Netrix.Models; +using Netrix.Utils; -namespace Netch.Controllers; +namespace Netrix.Controllers; public abstract class Guard { private FileStream? _logFileStream; private StreamWriter? _logStreamWriter; - /// application path relative of Netch\bin + /// application path relative of Netrix\bin /// /// application output encode protected Guard(string mainFile, bool redirectOutput = true, Encoding? encoding = null) @@ -29,7 +29,7 @@ protected Guard(string mainFile, bool redirectOutput = true, Encoding? encoding StartInfo = { FileName = fileName, - WorkingDirectory = $"{Global.NetchDir}\\bin", + WorkingDirectory = $"{Global.NetrixDir}\\bin", CreateNoWindow = true, UseShellExecute = !RedirectOutput, RedirectStandardOutput = RedirectOutput, @@ -41,7 +41,7 @@ protected Guard(string mainFile, bool redirectOutput = true, Encoding? encoding }; } - protected string LogPath => Path.Combine(Global.NetchDir, $"logging\\{Name}.log"); + protected string LogPath => Path.Combine(Global.NetrixDir, $"logging\\{Name}.log"); protected virtual IEnumerable StartedKeywords { get; } = new List(); @@ -71,8 +71,9 @@ protected async Task StartGuardAsync(string argument, ProcessPriorityClass prior if (RedirectOutput) { - ReadOutputAsync(Instance.StandardOutput).Forget(); - ReadOutputAsync(Instance.StandardError).Forget(); + // completes when the process closed both pipes, i.e. it exited and everything it printed was handled + var readers = Task.WhenAll(ReadOutputAsync(Instance.StandardOutput), ReadOutputAsync(Instance.StandardError)); + readers.Forget(); if (!StartedKeywords.Any()) { @@ -93,12 +94,20 @@ protected async Task StartGuardAsync(string argument, ProcessPriorityClass prior case State.Stopped: await StopGuardAsync(); OnStartFailed(); - throw new MessageException($"{Name} 控制器启动失败"); + throw new MessageException($"{Name} controller failed to start"); + } + + // exited without printing a started or failed keyword: do not wait out the timeout + if (readers.IsCompleted) + { + await StopGuardAsync(); + OnStartFailed(); + throw new MessageException($"{Name} controller failed to start"); } } await StopGuardAsync(); - throw new MessageException($"{Name} 控制器启动超时"); + throw new MessageException($"{Name} controller start timed out"); } } @@ -140,7 +149,7 @@ protected async Task StopGuardAsync() } catch (Exception e) { - Log.Error(e, "Stop {Name} failed", Instance.ProcessName); + Log.Error(e, "Stop {Name} failed", Name); } finally { @@ -150,7 +159,7 @@ protected async Task StopGuardAsync() if (_logFileStream != null) await _logFileStream.DisposeAsync(); - Instance.Dispose(); + Instance?.Dispose(); State = State.Stopped; } diff --git a/Netch/Controllers/MainController.cs b/Netrix/Controllers/MainController.cs similarity index 80% rename from Netch/Controllers/MainController.cs rename to Netrix/Controllers/MainController.cs index 4bf65ff..1ea60cf 100644 --- a/Netch/Controllers/MainController.cs +++ b/Netrix/Controllers/MainController.cs @@ -1,13 +1,13 @@ using System.Diagnostics; using Microsoft.VisualStudio.Threading; -using Netch.Interfaces; -using Netch.Models; -using Netch.Models.Modes; -using Netch.Servers; -using Netch.Services; -using Netch.Utils; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Models.Modes; +using Netrix.Servers; +using Netrix.Services; +using Netrix.Utils; -namespace Netch.Controllers; +namespace Netrix.Controllers; public static class MainController { @@ -29,8 +29,12 @@ public static async Task StartAsync(Server server, Mode mode) Log.Information("Start MainController: {Server} {Mode}", $"{server.Type}", $"[{(int)mode.Type}]{mode.i18NRemark}"); + var sw = Stopwatch.StartNew(); + void Lap(string step) => Log.Information("Start step {Step}: {Ms} ms since click", step, sw.ElapsedMilliseconds); + if (await DnsUtils.LookupAsync(server.Hostname) == null) throw new MessageException(i18N.Translate("Lookup Server hostname failed")); + Lap("server DNS lookup"); // TODO Disable NAT Type Test setting // cache STUN Server ip to prevent "Wrong STUN Server" @@ -39,7 +43,8 @@ public static async Task StartAsync(Server server, Mode mode) Server = server; Mode = mode; - await Task.WhenAll(Task.Run(NativeMethods.RefreshDNSCache), Task.Run(Firewall.AddNetchFwRules)); + await Task.WhenAll(Task.Run(NativeMethods.RefreshDNSCache), Task.Run(Firewall.AddNetrixFwRules)); + Lap("DNS cache + firewall rules"); try { @@ -62,6 +67,7 @@ public static async Task StartAsync(Server server, Mode mode) TryReleaseTcpPort(ServerController.Socks5LocalPort(), "Socks5"); Socks5Server = await ServerController.StartAsync(server); + Lap("server controller started"); StatusPortInfoText.Socks5Port = Socks5Server.Port; StatusPortInfoText.UpdateShareLan(); @@ -71,6 +77,7 @@ public static async Task StartAsync(Server server, Mode mode) Global.MainForm.StatusText(i18N.TranslateFormat("Starting {0}", ModeController.Name)); await ModeController.StartAsync(Socks5Server, mode); + Lap("mode controller started"); } catch (Exception e) { @@ -112,23 +119,32 @@ public static async Task StopAsync() Log.Information("Stop Main Controller"); StatusPortInfoText.Reset(); - var tasks = new[] - { - ServerController?.StopAsync() ?? Task.CompletedTask, - ModeController?.StopAsync() ?? Task.CompletedTask - }; + // each part stops on its own: a part that throws or hangs (lost network, dead helper process) must not keep the app in "Stopping" + await Task.WhenAll(StopPartAsync("server controller", () => ServerController?.StopAsync()), + StopPartAsync("mode controller", () => ModeController?.StopAsync())); + + ServerController = null; + ModeController = null; + } + + private static readonly TimeSpan StopTimeout = TimeSpan.FromSeconds(15); + private static async Task StopPartAsync(string name, Func stop) + { try { - await Task.WhenAll(tasks); + // stop() itself may throw before it returns a task + if (stop() is { } task) + await task.WaitAsync(StopTimeout); + } + catch (TimeoutException) + { + Log.Warning("The {Name} did not stop within {Seconds} s, continuing", name, StopTimeout.TotalSeconds); } catch (Exception e) { - Log.Error(e, "MainController Stop Error"); + Log.Error(e, "Stopping the {Name} failed", name); } - - ServerController = null; - ModeController = null; } public static void PortCheck(ushort port, string portName, PortType portType = PortType.Both) @@ -155,7 +171,7 @@ public static void TryReleaseTcpPort(ushort port, string portName) if (fileName == null) continue; - if (fileName.StartsWith(Global.NetchDir)) + if (fileName.StartsWith(Global.NetrixDir)) { p.Kill(); p.WaitForExit(); diff --git a/Netch/Controllers/NFController.cs b/Netrix/Controllers/NFController.cs similarity index 93% rename from Netch/Controllers/NFController.cs rename to Netrix/Controllers/NFController.cs index 4c1f3fd..3547a9f 100644 --- a/Netch/Controllers/NFController.cs +++ b/Netrix/Controllers/NFController.cs @@ -1,14 +1,14 @@ using System.Net; using System.ServiceProcess; -using Netch.Interfaces; -using Netch.Models; -using Netch.Models.Modes; -using Netch.Models.Modes.ProcessMode; -using Netch.Servers; -using Netch.Utils; -using static Netch.Interops.Redirector; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Models.Modes; +using Netrix.Models.Modes.ProcessMode; +using Netrix.Servers; +using Netrix.Utils; +using static Netrix.Interops.Redirector; -namespace Netch.Controllers; +namespace Netrix.Controllers; public class NFController : IModeController { @@ -143,7 +143,7 @@ private void DialRule() throw new MessageException(GenerateInvalidRulesMessage(invalidList)); // Bypass Self - Dial(NameList.AIO_BYPNAME, "^" + Global.NetchDir.ToRegexString()); + Dial(NameList.AIO_BYPNAME, "^" + Global.NetrixDir.ToRegexString()); } #region DriverUtil @@ -190,9 +190,9 @@ private static void CheckDriver() } /// - /// 安装 NF 驱动 + /// Install the NF driver /// - /// 驱动是否安装成功 + /// Whether the driver was installed private static void InstallDriver() { Log.Information("Install netfilter2 driver"); @@ -211,7 +211,7 @@ private static void InstallDriver() throw new MessageException($"Copy netfilter2.sys failed\n{e.Message}"); } - // 注册驱动文件 + // Register the driver file if (Interops.Redirector.aio_register("netfilter2")) { Log.Information("Install netfilter2 driver finished"); @@ -223,9 +223,9 @@ private static void InstallDriver() } /// - /// 卸载 NF 驱动 + /// Uninstall the NF driver /// - /// 是否成功卸载 + /// Whether it was uninstalled public static bool UninstallDriver() { Log.Information("Uninstall netfilter2"); diff --git a/Netch/Controllers/PcapController.cs b/Netrix/Controllers/PcapController.cs similarity index 92% rename from Netch/Controllers/PcapController.cs rename to Netrix/Controllers/PcapController.cs index 3c31d4a..73f026c 100644 --- a/Netch/Controllers/PcapController.cs +++ b/Netrix/Controllers/PcapController.cs @@ -1,14 +1,14 @@ using System.Text; using Microsoft.VisualStudio.Threading; -using Netch.Forms; -using Netch.Interfaces; -using Netch.Models; -using Netch.Models.Modes; -using Netch.Models.Modes.ShareMode; -using Netch.Servers; -using Netch.Utils; - -namespace Netch.Controllers; +using Netrix.Forms; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Models.Modes; +using Netrix.Models.Modes.ShareMode; +using Netrix.Servers; +using Netrix.Utils; + +namespace Netrix.Controllers; public class PcapController : Guard, IModeController { diff --git a/Netch/Controllers/TUNController.cs b/Netrix/Controllers/TUNController.cs similarity index 60% rename from Netch/Controllers/TUNController.cs rename to Netrix/Controllers/TUNController.cs index 686cc60..92eebee 100644 --- a/Netch/Controllers/TUNController.cs +++ b/Netrix/Controllers/TUNController.cs @@ -1,16 +1,16 @@ using System.Net; using System.Net.NetworkInformation; using System.Net.Sockets; -using Netch.Interfaces; -using Netch.Interops; -using Netch.Models; -using Netch.Models.Modes; -using Netch.Models.Modes.TunMode; -using Netch.Servers; -using Netch.Utils; -using static Netch.Interops.tun2socks; - -namespace Netch.Controllers +using Netrix.Interfaces; +using Netrix.Interops; +using Netrix.Models; +using Netrix.Models.Modes; +using Netrix.Models.Modes.TunMode; +using Netrix.Servers; +using Netrix.Utils; +using static Netrix.Interops.tun2socks; + +namespace Netrix.Controllers { public class TUNController : IModeController { @@ -23,8 +23,11 @@ public class TUNController : IModeController private NetRoute _tun; private NetRoute _outbound; + // unique local address for the adapter, only used as the source of the IPv6 default route + private const string TunAddressV6 = "fd00:236::10"; + public string Name => "tun2socks"; - public string interfaceName => "netch"; + public string interfaceName => "netrix"; public ModeFeature Features => ModeFeature.SupportSocks5Auth; @@ -47,21 +50,6 @@ public async Task StartAsync(Socks5Server server, Mode mode) _outbound = NetRoute.GetBestRouteTemplate(); CheckDriver(); - // Wait for adapter to be created - for (var i = 0; i < 20; i++) - { - await Task.Delay(300); - try - { - _tun.InterfaceIndex = NetworkInterfaceUtils.Get(ni => ni.Name.StartsWith(interfaceName)).GetIndex(); - break; - } - catch - { - // ignored - } - } - Dial(NameList.TYPE_ADAPMTU, "1500"); Dial(NameList.TYPE_BYPBIND, _outbound.Gateway); Dial(NameList.TYPE_BYPLIST, "disabled"); @@ -103,6 +91,14 @@ public async Task StartAsync(Socks5Server server, Mode mode) #endregion + // IPv6 enters the tunnel (SetupIPv6). A server without IPv6 egress accepts those connections and then stalls, so + // dual-stack sites hang: have tun2socks reject them instead, clients fall back to IPv4 at once and nothing leaks + var blockIPv6 = ProxyIPv6Routed && !await Socks5ServerTestUtils.IPv6WorksAsync(server); + if (blockIPv6) + Log.Warning("The server has no working IPv6 path, IPv6 connections are rejected so clients use IPv4"); + + Dial(NameList.TYPE_BLOCKIPV6, blockIPv6 ? "1" : "0"); + if (!Init()) throw new MessageException("tun2socks start failed."); @@ -114,7 +110,32 @@ public async Task StartAsync(Socks5Server server, Mode mode) (byte)Utils.Utils.SubnetToCidr(_tunConfig.Netmask), (ulong)tunIndex); + var routeTimer = System.Diagnostics.Stopwatch.StartNew(); SetupRouteTable(); + Log.Information("Route table: {Count} rules in {Ms} ms", _mode.Handle.Count() + _mode.Bypass.Count(), routeTimer.ElapsedMilliseconds); + SetupIPv6(tunIndex); + } + + // the bypass route for the server is IPv4 only, an IPv6 server would loop back into the tunnel + private bool ProxyIPv6Routed => _tunConfig.ProxyIPv6 && _serverRemoteAddress?.AddressFamily != AddressFamily.InterNetworkV6; + + /// + /// Without this IPv6 traffic keeps using the physical adapter and never enters the tunnel + /// + private void SetupIPv6(int tunIndex) + { + if (!ProxyIPv6Routed) + return; + + if (!RouteHelper.CreateUnicastIP(AddressFamily.InterNetworkV6, TunAddressV6, 64, (ulong)tunIndex)) + { + Log.Warning("Failed to add IPv6 address to the tunnel adapter, IPv6 traffic stays outside the tunnel"); + return; + } + + // empty gateway = on-link, like a VPN adapter without neighbor discovery + if (!RouteUtils.CreateRoute(NetRoute.TemplateBuilder(string.Empty, tunIndex).FillTemplate("::", 0), AddressFamily.InterNetworkV6)) + Log.Warning("Failed to add the IPv6 default route, IPv6 traffic stays outside the tunnel"); } public async Task StopAsync() @@ -131,9 +152,15 @@ public async Task StopAsync() private void CheckDriver() { - string binDriver = Path.Combine(Global.NetchDir, Constants.WintunDllFile); + string binDriver = Path.Combine(Global.NetrixDir, Constants.WintunDllFile); string sysDriver = $@"{Environment.SystemDirectory}\wintun.dll"; + // File.Copy keeps the write time, so same size + time means this file was installed earlier + // ponytail: a different file with identical size and time goes undetected; drop the shortcut if that matters + FileInfo bin = new(binDriver), sys = new(sysDriver); + if (sys.Exists && bin.Length == sys.Length && bin.LastWriteTimeUtc == sys.LastWriteTimeUtc) + return; + var binHash = Utils.Utils.Sha256CheckSumAsync(binDriver).Result; var sysHash = Utils.Utils.Sha256CheckSumAsync(sysDriver).Result; Log.Information("Built-in wintun.dll Hash: {Hash}", binHash); @@ -192,20 +219,36 @@ private void SetupRouteTable() NetworkInterfaceUtils.SetInterfaceMetric(_tun.InterfaceIndex, 0); } + /// + /// Every step is independent: when the PC lost its network the physical adapter may be gone, and one failing step + /// (e.g. resetting the metric of a vanished interface) must not skip the rest or break Stop. + /// private void ClearRouteTable() { if (_serverRemoteAddress != null) - RouteUtils.DeleteRoute(_outbound.FillTemplate(_serverRemoteAddress.ToString(), 32)); + Try(() => RouteUtils.DeleteRoute(_outbound.FillTemplate(_serverRemoteAddress.ToString(), 32))); if (_outbound.Gateway != null) { - RouteUtils.DeleteRouteFill(_outbound, Global.Settings.TUNTAP.BypassIPs); - RouteUtils.DeleteRoute(_outbound.FillTemplate(Utils.Utils.GetHostFromUri(Global.Settings.AioDNS.ChinaDNS), 32)); - NetworkInterfaceUtils.SetInterfaceMetric(_outbound.InterfaceIndex); + Try(() => RouteUtils.DeleteRouteFill(_outbound, Global.Settings.TUNTAP.BypassIPs)); + Try(() => RouteUtils.DeleteRoute(_outbound.FillTemplate(Utils.Utils.GetHostFromUri(Global.Settings.AioDNS.ChinaDNS), 32))); + Try(() => NetworkInterfaceUtils.SetInterfaceMetric(_outbound.InterfaceIndex)); } if (_mode != null) - RouteUtils.DeleteRouteFill(_outbound, _mode.Bypass); + Try(() => RouteUtils.DeleteRouteFill(_outbound, _mode.Bypass)); + } + + private static void Try(Action step) + { + try + { + step(); + } + catch (Exception e) + { + Log.Warning(e, "Route cleanup step failed, continuing"); + } } #endregion diff --git a/Netch/Controllers/UpdateChecker.cs b/Netrix/Controllers/UpdateChecker.cs similarity index 74% rename from Netch/Controllers/UpdateChecker.cs rename to Netrix/Controllers/UpdateChecker.cs index e154d62..7233bb3 100644 --- a/Netch/Controllers/UpdateChecker.cs +++ b/Netrix/Controllers/UpdateChecker.cs @@ -2,20 +2,20 @@ using System.Text; using System.Text.Json; using System.Text.RegularExpressions; -using Netch.Models.GitHubRelease; -using Netch.Utils; +using Netrix.Models.GitHubRelease; +using Netrix.Utils; -namespace Netch.Controllers; +namespace Netrix.Controllers; public static class UpdateChecker { - public const string Owner = @"NetchX"; - public const string Repo = @"Netch"; + public const string Owner = @"psnwd"; + public const string Repo = @"Netrix"; - public const string Name = @"Netch"; - public const string Copyright = @"Copyright © 2019 - 2022"; + public const string Name = @"Netrix"; + public const string Copyright = @"Copyright © 2019 AmazingDM and Contributors; Netrix changes © 2026 psnwd"; - public const string AssemblyVersion = @"1.9.7"; + public const string AssemblyVersion = @"2.0.0"; private const string Suffix = @""; public static readonly string Version = $"{AssemblyVersion}{(string.IsNullOrEmpty(Suffix) ? "" : $"-{Suffix}")}"; @@ -42,7 +42,15 @@ public static async Task CheckAsync(bool isPreRelease) var (_, json) = await WebUtil.DownloadStringAsync(WebUtil.CreateRequest(url)); var releases = JsonSerializer.Deserialize>(json)!; - LatestRelease = GetLatestRelease(releases, isPreRelease); + var latest = GetLatestRelease(releases, isPreRelease); + if (latest == null) + { + Log.Information("No release published yet"); + NewVersionNotFound?.Invoke(null, EventArgs.Empty); + return; + } + + LatestRelease = latest; Log.Information("Github latest release: {Version}", LatestRelease.tag_name); if (VersionUtil.CompareVersion(LatestRelease.tag_name, Version) > 0) { @@ -57,7 +65,7 @@ public static async Task CheckAsync(bool isPreRelease) } catch (Exception e) { - if (e is WebException) + if (e is HttpRequestException or TaskCanceledException) Log.Warning(e, "Get releases failed"); else Log.Error(e, "Get releases error"); @@ -72,7 +80,7 @@ public static (string fileName, string sha256) GetLatestUpdateFileNameAndHash(st /* Skip(2) - | 文件名 | SHA256 | + | File | SHA256 | | :- | :- | */ @@ -86,7 +94,7 @@ public static string GetLatestReleaseContent() var sb = new StringBuilder(); foreach (string l in LatestRelease.body.GetLines(false).SkipWhile(l => l.FirstOrDefault() != '#')) { - if (l.Contains("校验和")) + if (l.Contains("Checksums")) break; sb.AppendLine(l); @@ -95,12 +103,12 @@ public static string GetLatestReleaseContent() return sb.ToString(); } - private static Release GetLatestRelease(IEnumerable releases, bool isPreRelease) + internal static Release? GetLatestRelease(IEnumerable releases, bool isPreRelease) { if (!isPreRelease) releases = releases.Where(release => !release.prerelease); var ordered = releases.OrderByDescending(release => release.tag_name, new VersionUtil.VersionComparer()); - return ordered.ElementAt(0); + return ordered.FirstOrDefault(); } } diff --git a/Netrix/Controllers/WebController.cs b/Netrix/Controllers/WebController.cs new file mode 100644 index 0000000..8b8e843 --- /dev/null +++ b/Netrix/Controllers/WebController.cs @@ -0,0 +1,99 @@ +using System.Text.Json; +using Microsoft.Win32; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Models.Modes; +using Netrix.Models.Modes.WebMode; +using Netrix.Servers; +using Windows.Win32; + +namespace Netrix.Controllers; + +/// +/// Sets the Windows system proxy (WinINet) to the SOCKS5 server; only apps that honour it are proxied +/// +public class WebController : IModeController +{ + // not const: tests point it at a scratch key instead of the real Internet Settings + internal static string KeyPath =@"Software\Microsoft\Windows\CurrentVersion\Internet Settings"; + + // previous values are also written to disk so a crash can be undone on the next launch (RecoverAfterCrash) + private static string SavedFile => Path.Combine(Global.NetrixDir, "data", "webmode.restore.json"); + + private record Saved(int? Enable, string? Server, string? Override); + + private Saved? _saved; + + public string Name => "System Proxy"; + + public ModeFeature Features => ModeFeature.SupportSocks5; + + public async Task StartAsync(Socks5Server server, Mode mode) + { + if (mode is not WebMode webMode) + throw new InvalidOperationException(); + + var address = $"{await server.AutoResolveHostnameAsync()}:{server.Port}"; + + using var key = Registry.CurrentUser.OpenSubKey(KeyPath, true) ?? throw new MessageException("Open Internet Settings failed"); + _saved = new Saved(key.GetValue("ProxyEnable") as int?, key.GetValue("ProxyServer") as string, key.GetValue("ProxyOverride") as string); + File.WriteAllText(SavedFile, JsonSerializer.Serialize(_saved)); + + key.SetValue("ProxyServer", $"socks={address}"); + key.SetValue("ProxyOverride", webMode.Bypass); + key.SetValue("ProxyEnable", 1, RegistryValueKind.DWord); + Notify(); + } + + public Task StopAsync() + { + if (_saved != null) + Restore(_saved); + + _saved = null; + return Task.CompletedTask; + } + + /// + /// Call at startup: if a previous run died with the proxy set, put the old values back + /// + public static void RecoverAfterCrash() + { + try + { + if (File.Exists(SavedFile)) + Restore(JsonSerializer.Deserialize(File.ReadAllText(SavedFile))!); + } + catch (Exception e) + { + Log.Error(e, "Recover system proxy failed"); + } + } + + private static void Restore(Saved saved) + { + using var key = Registry.CurrentUser.OpenSubKey(KeyPath, true); + if (key == null) + return; + + Set(key, "ProxyEnable", saved.Enable, RegistryValueKind.DWord); + Set(key, "ProxyServer", saved.Server, RegistryValueKind.String); + Set(key, "ProxyOverride", saved.Override, RegistryValueKind.String); + Notify(); + File.Delete(SavedFile); + } + + private static void Set(RegistryKey key, string name, object? value, RegistryValueKind kind) + { + if (value == null) + key.DeleteValue(name, false); + else + key.SetValue(name, value, kind); + } + + private static unsafe void Notify() + { + PInvoke.InternetSetOption(null, PInvoke.INTERNET_OPTION_SETTINGS_CHANGED, null, 0); + PInvoke.InternetSetOption(null, PInvoke.INTERNET_OPTION_REFRESH, null, 0); + } +} diff --git a/Netch/Enums/LogLevel.cs b/Netrix/Enums/LogLevel.cs similarity index 70% rename from Netch/Enums/LogLevel.cs rename to Netrix/Enums/LogLevel.cs index c578902..46f1075 100644 --- a/Netch/Enums/LogLevel.cs +++ b/Netrix/Enums/LogLevel.cs @@ -1,4 +1,4 @@ -namespace Netch.Enums; +namespace Netrix.Enums; public enum LogLevel { diff --git a/Netch/Enums/State.cs b/Netrix/Enums/State.cs similarity index 75% rename from Netch/Enums/State.cs rename to Netrix/Enums/State.cs index 1e31a42..51c4c62 100644 --- a/Netch/Enums/State.cs +++ b/Netrix/Enums/State.cs @@ -1,37 +1,37 @@ -namespace Netch.Enums; +namespace Netrix.Enums; /// -/// 状态 +/// State /// public enum State { /// - /// 等待命令中 + /// Waiting for a command /// Waiting, /// - /// 正在启动中 + /// Starting /// Starting, /// - /// 已启动 + /// Started /// Started, /// - /// 正在停止中 + /// Stopping /// Stopping, /// - /// 已停止 + /// Stopped /// Stopped, /// - /// 退出中 + /// Exiting /// Terminating } diff --git a/Netch/Flags.cs b/Netrix/Flags.cs similarity index 91% rename from Netch/Flags.cs rename to Netrix/Flags.cs index 966c29f..6267246 100644 --- a/Netch/Flags.cs +++ b/Netrix/Flags.cs @@ -1,4 +1,4 @@ -namespace Netch; +namespace Netrix; public static class Flags { diff --git a/Netch/FodyWeavers.xml b/Netrix/FodyWeavers.xml similarity index 100% rename from Netch/FodyWeavers.xml rename to Netrix/FodyWeavers.xml diff --git a/Netch/Forms/AboutForm.Designer.cs b/Netrix/Forms/AboutForm.Designer.cs similarity index 51% rename from Netch/Forms/AboutForm.Designer.cs rename to Netrix/Forms/AboutForm.Designer.cs index 6382036..b034ad9 100644 --- a/Netch/Forms/AboutForm.Designer.cs +++ b/Netrix/Forms/AboutForm.Designer.cs @@ -1,4 +1,4 @@ -namespace Netch.Forms +namespace Netrix.Forms { partial class AboutForm { @@ -28,42 +28,42 @@ protected override void Dispose(bool disposing) /// private void InitializeComponent() { - this.ChannelLabel = new System.Windows.Forms.LinkLabel(); - this.NetchPictureBox = new System.Windows.Forms.PictureBox(); - ((System.ComponentModel.ISupportInitialize)(this.NetchPictureBox)).BeginInit(); + this.RepoLabel = new System.Windows.Forms.LinkLabel(); + this.NetrixPictureBox = new System.Windows.Forms.PictureBox(); + ((System.ComponentModel.ISupportInitialize)(this.NetrixPictureBox)).BeginInit(); this.SuspendLayout(); // - // ChannelLabel + // RepoLabel // - this.ChannelLabel.AutoSize = true; - this.ChannelLabel.Location = new System.Drawing.Point(116, 215); - this.ChannelLabel.Name = "ChannelLabel"; - this.ChannelLabel.Size = new System.Drawing.Size(113, 17); - this.ChannelLabel.TabIndex = 5; - this.ChannelLabel.TabStop = true; - this.ChannelLabel.Text = "Telegram Channel"; - this.ChannelLabel.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.ChannelLabel_LinkClicked); + this.RepoLabel.AutoSize = true; + this.RepoLabel.Location = new System.Drawing.Point(94, 215); + this.RepoLabel.Name = "RepoLabel"; + this.RepoLabel.Size = new System.Drawing.Size(150, 17); + this.RepoLabel.TabIndex = 5; + this.RepoLabel.TabStop = true; + this.RepoLabel.Text = "github.com/psnwd/netrix"; + this.RepoLabel.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.RepoLabel_LinkClicked); // - // NetchPictureBox + // NetrixPictureBox // - this.NetchPictureBox.Cursor = System.Windows.Forms.Cursors.Hand; - this.NetchPictureBox.Image = global::Netch.Properties.Resources.Netch; - this.NetchPictureBox.Location = new System.Drawing.Point(72, 12); - this.NetchPictureBox.Name = "NetchPictureBox"; - this.NetchPictureBox.Size = new System.Drawing.Size(200, 200); - this.NetchPictureBox.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage; - this.NetchPictureBox.TabIndex = 0; - this.NetchPictureBox.TabStop = false; - this.NetchPictureBox.Click += new System.EventHandler(this.NetchPictureBox_Click); + this.NetrixPictureBox.Cursor = System.Windows.Forms.Cursors.Hand; + this.NetrixPictureBox.Image = global::Netrix.Properties.Resources.Netrix; + this.NetrixPictureBox.Location = new System.Drawing.Point(72, 12); + this.NetrixPictureBox.Name = "NetrixPictureBox"; + this.NetrixPictureBox.Size = new System.Drawing.Size(200, 200); + this.NetrixPictureBox.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage; + this.NetrixPictureBox.TabIndex = 0; + this.NetrixPictureBox.TabStop = false; + this.NetrixPictureBox.Click += new System.EventHandler(this.NetrixPictureBox_Click); // // AboutForm // this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi; this.ClientSize = new System.Drawing.Size(338, 244); - this.Controls.Add(this.ChannelLabel); - this.Controls.Add(this.NetchPictureBox); - this.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point); + this.Controls.Add(this.RepoLabel); + this.Controls.Add(this.NetrixPictureBox); + this.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point); this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle; this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4); this.MaximizeBox = false; @@ -71,7 +71,7 @@ private void InitializeComponent() this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "About"; this.Load += new System.EventHandler(this.AboutForm_Load); - ((System.ComponentModel.ISupportInitialize)(this.NetchPictureBox)).EndInit(); + ((System.ComponentModel.ISupportInitialize)(this.NetrixPictureBox)).EndInit(); this.ResumeLayout(false); this.PerformLayout(); @@ -79,7 +79,7 @@ private void InitializeComponent() #endregion - private System.Windows.Forms.PictureBox NetchPictureBox; - private System.Windows.Forms.LinkLabel ChannelLabel; + private System.Windows.Forms.PictureBox NetrixPictureBox; + private System.Windows.Forms.LinkLabel RepoLabel; } } \ No newline at end of file diff --git a/Netrix/Forms/AboutForm.cs b/Netrix/Forms/AboutForm.cs new file mode 100644 index 0000000..8307b9b --- /dev/null +++ b/Netrix/Forms/AboutForm.cs @@ -0,0 +1,35 @@ +using Netrix.Properties; +using Netrix.Utils; + +namespace Netrix.Forms; + +[Fody.ConfigureAwait(true)] +public partial class AboutForm : Form +{ + public AboutForm() + { + InitializeComponent(); + Icon = Resources.icon; + KeyPreview = true; + KeyDown += (_, e) => + { + if (e.KeyCode == Keys.Escape) + Close(); + }; + } + + private void AboutForm_Load(object sender, EventArgs e) + { + i18N.TranslateForm(this); + } + + private void NetrixPictureBox_Click(object sender, EventArgs e) + { + Utils.Utils.Open("https://github.com/psnwd/netrix"); + } + + private void RepoLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) + { + Utils.Utils.Open("https://github.com/psnwd/netrix"); + } +} \ No newline at end of file diff --git a/Netch/Forms/AboutForm.resx b/Netrix/Forms/AboutForm.resx similarity index 100% rename from Netch/Forms/AboutForm.resx rename to Netrix/Forms/AboutForm.resx diff --git a/Netch/Forms/BindingForm.cs b/Netrix/Forms/BindingForm.cs similarity index 98% rename from Netch/Forms/BindingForm.cs rename to Netrix/Forms/BindingForm.cs index e4fbf0f..166eea3 100644 --- a/Netch/Forms/BindingForm.cs +++ b/Netrix/Forms/BindingForm.cs @@ -1,6 +1,6 @@ -using Netch.Models; +using Netrix.Models; -namespace Netch.Forms; +namespace Netrix.Forms; [Fody.ConfigureAwait(true)] public class BindingForm : Form diff --git a/Netch/Forms/GlobalBypassIPForm.Designer.cs b/Netrix/Forms/GlobalBypassIPForm.Designer.cs similarity index 97% rename from Netch/Forms/GlobalBypassIPForm.Designer.cs rename to Netrix/Forms/GlobalBypassIPForm.Designer.cs index 4d204e0..462eeef 100644 --- a/Netch/Forms/GlobalBypassIPForm.Designer.cs +++ b/Netrix/Forms/GlobalBypassIPForm.Designer.cs @@ -1,4 +1,4 @@ -namespace Netch.Forms +namespace Netrix.Forms { partial class GlobalBypassIPForm { @@ -117,7 +117,7 @@ private void InitializeComponent() this.ClientSize = new System.Drawing.Size(340, 348); this.Controls.Add(this.ControlButton); this.Controls.Add(this.IPGroupBox); - this.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134))); + this.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point); this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle; this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4); this.MaximizeBox = false; diff --git a/Netch/Forms/GlobalBypassIPForm.cs b/Netrix/Forms/GlobalBypassIPForm.cs similarity index 95% rename from Netch/Forms/GlobalBypassIPForm.cs rename to Netrix/Forms/GlobalBypassIPForm.cs index 9c1ab81..d4d6a7d 100644 --- a/Netch/Forms/GlobalBypassIPForm.cs +++ b/Netrix/Forms/GlobalBypassIPForm.cs @@ -1,8 +1,8 @@ using System.Net; -using Netch.Properties; -using Netch.Utils; +using Netrix.Properties; +using Netrix.Utils; -namespace Netch.Forms; +namespace Netrix.Forms; [Fody.ConfigureAwait(true)] public partial class GlobalBypassIPForm : Form diff --git a/Netrix/Forms/HelpForm.cs b/Netrix/Forms/HelpForm.cs new file mode 100644 index 0000000..8e24881 --- /dev/null +++ b/Netrix/Forms/HelpForm.cs @@ -0,0 +1,259 @@ +using Netrix.Properties; + +namespace Netrix.Forms; + +/// +/// Built-in documentation window (Help menu): topic list on the left, formatted text on the right. +/// +/// +/// Topic text mini-format: "# x" sub-heading, "- Lead|text" bullet with a bold lead, "- text" plain bullet, +/// anything else is a paragraph. URLs become links. +/// +public class HelpForm : Form +{ + private static readonly (string Title, string[] Lines)[] Topics = + { + ("Getting started", new[] + { + "Netrix sends your traffic through a proxy server.", + "# Three steps", + "- 1. Add a server|Server menu: add one by hand, import a share link from the clipboard, or add a subscription.", + "- 2. Pick a mode|Process, TUN, Share or Web. If unsure, use a TUN mode such as \"Bypass LAN\".", + "- 3. Press Start|The delay column shows how fast each server answers (ms). Lower is better.", + "Run Netrix as administrator: TUN and Process modes install drivers and change routes." + }), + ("Servers", new[] + { + "# Supported", + "- Shadowsocks, ShadowsocksR, SOCKS5, SSH, Trojan, VMess, VLESS, WireGuard", + "# Adding", + "- By hand|Server menu, or the Add button.", + "- Share link|Copy a link (ss://, vmess://, trojan://, ...) then Server > Import Servers From Clipboard.", + "- Subscription|Subscription > Manage Subscriptions to add the link, Update Servers to refresh. They also refresh when Netrix opens.", + "# Delay", + "- Re-tested every few seconds while the window is open. Paused when Netrix is in the tray." + }), + ("Modes", new[] + { + "# Process", + "Proxies chosen programs, or everything except chosen programs. Uses the NetFilter driver.", + "- Handle|programs to proxy. Bypass: programs to skip. Entries are regular expressions, e.g. chrome.exe.", + "- Global Bypass Apps|ready-made mode: proxy everything except a list of apps.", + "# TUN", + "A virtual network adapter. All traffic of the PC goes through it, including IPv6.", + "- Skips by IP address, not by program.|Handle = IPs to proxy, Bypass = IPs to skip (1.2.3.0/24).", + "- Settings > TUN tab > Global Bypass IPs|skips IPs in every TUN mode.", + "# Share", + "Shares the proxy with other devices on your network. Needs Npcap.", + "# Web", + "Sets the Windows system proxy (HTTP/HTTPS) and restores it when you stop." + }), + ("Skip an app or IP", new[] + { + "# Skip a program", + "- Use a Process mode and add the exe name to its Bypass list (edit button next to the mode list, or Mode > Create Process Mode).", + "- TUN mode cannot skip by program: Windows routes by address only.", + "# Skip an IP or range", + "- Use a TUN mode and add the address to its Bypass list, or to Settings > TUN tab > Global Bypass IPs.", + "# IPv6", + "- If the server has no IPv6, Netrix rejects IPv6 connections so apps fall back to IPv4 at once.", + "- To keep IPv6 out of the tunnel, set ProxyIPv6 to false in the TUNTAP section of data\\settings.json." + }), + ("Status bar", new[] + { + "# NAT type", + "- 1|open, best for games and voice.", + "- 2|restricted.", + "- 3|symmetric, hard for peer-to-peer.", + "- NoUDP|the server does not relay UDP, or the STUN server is blocked.", + "- UnsupportedServer|the STUN server cannot do the test. Pick another in Settings.", + "Click the NAT label to test again.", + "# Speed", + "- TUN mode shows download and upload separately." + }), + ("Files", new[] + { + "Folders next to Netrix.exe:", + "- data|settings and server list. Back this up.", + "- mode|mode files, editable as text or JSON.", + "- logging|logs, including tun2socks.log.", + "- bin|helper programs and drivers." + }), + ("Troubleshooting", new[] + { + "# Nothing connects", + "- Check the server delay, then read logging\\application.log.", + "# TUN will not start", + "- Run as administrator. Check that bin\\wintun.dll exists.", + "# NAT shows NoUDP", + "- Try another STUN server. If all fail, the proxy server blocks UDP.", + "# Internet gone after a crash", + "- Start Netrix again: it restores the system proxy. Also try Options > Remove Netrix Firewall Rules.", + "# A site hangs, others work", + "- It may be IPv6. Look for \"no working IPv6 path\" in the log.", + "# Update broke it", + "- A failed update rolls back to the old files automatically." + }), + ("About", new[] + { + "Netrix is a free Windows proxy client (GPLv3).", + "# Links", + "- Source and releases|https://github.com/psnwd/netrix", + "- Report a problem|https://github.com/psnwd/netrix/issues", + "# Credits", + "Netrix is based on Netch by AmazingDM and contributors (https://github.com/NetchX/Netch). Third-party components are listed in NOTICE.txt." + }) + }; + + private readonly ListBox _topics = new() + { + Dock = DockStyle.Left, + Width = 190, + BorderStyle = BorderStyle.None, + Font = new Font("Segoe UI", 10.5f), + ItemHeight = 30, + DrawMode = DrawMode.OwnerDrawFixed, + IntegralHeight = false, + BackColor = SystemColors.ControlLight + }; + + private readonly Panel _page = new() { Dock = DockStyle.Fill, Padding = new Padding(32, 24, 24, 12), BackColor = SystemColors.Window }; + + private readonly RichTextBox _text = new() + { + Dock = DockStyle.Fill, + ReadOnly = true, + BorderStyle = BorderStyle.None, + BackColor = SystemColors.Window, + DetectUrls = true, + Font = new Font("Segoe UI", 10.5f) + }; + + private readonly Font _h1 = new("Segoe UI Semibold", 18f); + private readonly Font _h2 = new("Segoe UI Semibold", 12f); + private readonly Font _body = new("Segoe UI", 10.5f); + private readonly Font _bold = new("Segoe UI Semibold", 10.5f); + private readonly Font _gap = new("Segoe UI", 4f); // tiny blank line = paragraph spacing + + public HelpForm() + { + Icon = Resources.icon; + Text = "Netrix Help"; + Size = new Size(880, 620); + MinimumSize = new Size(640, 420); + StartPosition = FormStartPosition.CenterScreen; + KeyPreview = true; + KeyDown += (_, e) => + { + if (e.KeyCode == Keys.Escape) + Close(); + }; + + _text.LinkClicked += (_, e) => + { + if (e.LinkText is { } link) + Utils.Utils.Open(link); + }; + _topics.DrawItem += DrawTopic; + _topics.SelectedIndexChanged += (_, _) => Render(_topics.SelectedIndex); + _topics.Items.AddRange(Topics.Select(t => (object)t.Title).ToArray()); + + _text.BulletIndent = 14; + _page.Controls.Add(_text); + Controls.Add(_page); + Controls.Add(_topics); + _topics.SelectedIndex = 0; + } + + protected override void Dispose(bool disposing) + { + if (disposing) + { + _h1.Dispose(); + _h2.Dispose(); + _body.Dispose(); + _bold.Dispose(); + _gap.Dispose(); + _page.Dispose(); + _topics.Font.Dispose(); + _text.Font.Dispose(); + } + + base.Dispose(disposing); + } + + private void DrawTopic(object? sender, DrawItemEventArgs e) + { + if (e.Index < 0) + return; + + var selected = (e.State & DrawItemState.Selected) != 0; + using var back = new SolidBrush(selected ? SystemColors.Highlight : _topics.BackColor); + e.Graphics.FillRectangle(back, e.Bounds); + + var bounds = e.Bounds; + bounds.X += 14; + TextRenderer.DrawText(e.Graphics, + Topics[e.Index].Title, + _topics.Font, + bounds, + selected ? SystemColors.HighlightText : SystemColors.ControlText, + TextFormatFlags.VerticalCenter | TextFormatFlags.Left); + } + + private void Render(int index) + { + var (title, lines) = Topics[index]; + + _text.SuspendLayout(); + _text.Clear(); + _text.SelectionIndent = 0; + + Add(title + "\n", _h1, SystemColors.ControlText, 0); + + foreach (var line in lines) + { + if (line.StartsWith("# ")) + { + Add(line[2..] + "\n", _h2, SystemColors.Highlight, 0, spaceBefore: true); + } + else if (line.StartsWith("- ")) + { + var item = line[2..]; + var split = item.IndexOf('|'); + if (split > 0) + { + Add(item[..split] + " – ", _bold, SystemColors.ControlText, 6, bullet: true, hanging: 14); + Add(item[(split + 1)..] + "\n", _body, SystemColors.ControlText, 6, bullet: true, hanging: 14); + } + else + { + Add(item + "\n", _body, SystemColors.ControlText, 6, bullet: true, hanging: 14); + } + } + else + { + Add(line + "\n", _body, SystemColors.ControlText, 0); + } + + if (!line.StartsWith("# ")) + Add("\n", _gap, SystemColors.ControlText, 0); + } + + _text.SelectionStart = 0; + _text.SelectionLength = 0; + _text.ResumeLayout(); + } + + private void Add(string s, Font font, Color color, int indent, bool bullet = false, bool spaceBefore = false, int hanging = 0) + { + _text.SelectionStart = _text.TextLength; + _text.SelectionLength = 0; + _text.SelectionIndent = indent; + _text.SelectionHangingIndent = hanging; + _text.SelectionBullet = bullet; + _text.SelectionFont = font; + _text.SelectionColor = color; + _text.SelectedText = spaceBefore ? "\n" + s : s; + } +} diff --git a/Netch/Forms/LogForm.Designer.cs b/Netrix/Forms/LogForm.Designer.cs similarity index 99% rename from Netch/Forms/LogForm.Designer.cs rename to Netrix/Forms/LogForm.Designer.cs index 273545e..9c87260 100644 --- a/Netch/Forms/LogForm.Designer.cs +++ b/Netrix/Forms/LogForm.Designer.cs @@ -1,6 +1,6 @@ using System.ComponentModel; -namespace Netch.Forms +namespace Netrix.Forms { partial class LogForm { diff --git a/Netch/Forms/LogForm.cs b/Netrix/Forms/LogForm.cs similarity index 94% rename from Netch/Forms/LogForm.cs rename to Netrix/Forms/LogForm.cs index a7b1d5e..0344151 100644 --- a/Netch/Forms/LogForm.cs +++ b/Netrix/Forms/LogForm.cs @@ -3,7 +3,7 @@ using Windows.Win32.UI.WindowsAndMessaging; using static Windows.Win32.PInvoke; -namespace Netch.Forms; +namespace Netrix.Forms; [Fody.ConfigureAwait(true)] public partial class LogForm : Form @@ -73,12 +73,12 @@ private void Parent_VisibleChanged(object? sender, EventArgs e) Visible = _parent.Visible; } - protected override void OnClosing(CancelEventArgs? e) + protected override void OnFormClosing(FormClosingEventArgs e) { _parent.LocationChanged -= Parent_Move; _parent.SizeChanged -= Parent_Move; _parent.Activated -= Parent_Activated; _parent.VisibleChanged -= Parent_VisibleChanged; - base.OnClosing(e!); + base.OnFormClosing(e); } } \ No newline at end of file diff --git a/Netch/Forms/LogForm.resx b/Netrix/Forms/LogForm.resx similarity index 100% rename from Netch/Forms/LogForm.resx rename to Netrix/Forms/LogForm.resx diff --git a/Netch/Forms/MainForm.Designer.cs b/Netrix/Forms/MainForm.Designer.cs similarity index 95% rename from Netch/Forms/MainForm.Designer.cs rename to Netrix/Forms/MainForm.Designer.cs index 328fd90..00ab494 100644 --- a/Netch/Forms/MainForm.Designer.cs +++ b/Netrix/Forms/MainForm.Designer.cs @@ -1,4 +1,4 @@ -namespace Netch.Forms +namespace Netrix.Forms { partial class MainForm { @@ -44,10 +44,11 @@ private void InitializeComponent() this.ShowHideConsoleToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); this.CleanDNSCacheToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); this.UninstallServiceToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); - this.RemoveNetchFirewallRulesToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); + this.RemoveNetrixFirewallRulesToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); this.HelpToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); this.CheckForUpdateToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); this.FAQToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); + this.DocumentationToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); this.ForceExitToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); this.AboutToolStripButton = new System.Windows.Forms.ToolStripButton(); this.NewVersionLabel = new System.Windows.Forms.ToolStripLabel(); @@ -204,7 +205,7 @@ private void InitializeComponent() this.ShowHideConsoleToolStripMenuItem, this.CleanDNSCacheToolStripMenuItem, this.UninstallServiceToolStripMenuItem, - this.RemoveNetchFirewallRulesToolStripMenuItem}); + this.RemoveNetrixFirewallRulesToolStripMenuItem}); this.OptionsToolStripMenuItem.Margin = new System.Windows.Forms.Padding(0, 0, 0, 1); this.OptionsToolStripMenuItem.Name = "OptionsToolStripMenuItem"; this.OptionsToolStripMenuItem.Size = new System.Drawing.Size(66, 21); @@ -238,17 +239,18 @@ private void InitializeComponent() this.UninstallServiceToolStripMenuItem.Text = "Uninstall NF Service"; this.UninstallServiceToolStripMenuItem.Click += new System.EventHandler(this.UninstallServiceToolStripMenuItem_Click); // - // RemoveNetchFirewallRulesToolStripMenuItem + // RemoveNetrixFirewallRulesToolStripMenuItem // - this.RemoveNetchFirewallRulesToolStripMenuItem.Name = "RemoveNetchFirewallRulesToolStripMenuItem"; - this.RemoveNetchFirewallRulesToolStripMenuItem.Size = new System.Drawing.Size(243, 22); - this.RemoveNetchFirewallRulesToolStripMenuItem.Text = "Remove Netch Firewall Rules"; - this.RemoveNetchFirewallRulesToolStripMenuItem.Click += new System.EventHandler(this.RemoveNetchFirewallRulesToolStripMenuItem_Click); + this.RemoveNetrixFirewallRulesToolStripMenuItem.Name = "RemoveNetrixFirewallRulesToolStripMenuItem"; + this.RemoveNetrixFirewallRulesToolStripMenuItem.Size = new System.Drawing.Size(243, 22); + this.RemoveNetrixFirewallRulesToolStripMenuItem.Text = "Remove Netrix Firewall Rules"; + this.RemoveNetrixFirewallRulesToolStripMenuItem.Click += new System.EventHandler(this.RemoveNetrixFirewallRulesToolStripMenuItem_Click); // // HelpToolStripMenuItem // this.HelpToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] { this.CheckForUpdateToolStripMenuItem, + this.DocumentationToolStripMenuItem, this.FAQToolStripMenuItem}); this.HelpToolStripMenuItem.Margin = new System.Windows.Forms.Padding(0, 0, 0, 1); this.HelpToolStripMenuItem.Name = "HelpToolStripMenuItem"; @@ -262,11 +264,18 @@ private void InitializeComponent() this.CheckForUpdateToolStripMenuItem.Text = "Check for update"; this.CheckForUpdateToolStripMenuItem.Click += new System.EventHandler(this.CheckForUpdatesToolStripMenuItem_Click); // + // DocumentationToolStripMenuItem + // + this.DocumentationToolStripMenuItem.Name = "DocumentationToolStripMenuItem"; + this.DocumentationToolStripMenuItem.Size = new System.Drawing.Size(177, 22); + this.DocumentationToolStripMenuItem.Text = "Documentation"; + this.DocumentationToolStripMenuItem.Click += new System.EventHandler(this.DocumentationToolStripMenuItem_Click); + // // FAQToolStripMenuItem // this.FAQToolStripMenuItem.Name = "FAQToolStripMenuItem"; this.FAQToolStripMenuItem.Size = new System.Drawing.Size(177, 22); - this.FAQToolStripMenuItem.Text = "FAQ"; + this.FAQToolStripMenuItem.Text = "Report an issue"; this.FAQToolStripMenuItem.Click += new System.EventHandler(this.fAQToolStripMenuItem_Click); // // ForceExitToolStripMenuItem @@ -437,7 +446,7 @@ private void InitializeComponent() // this.EditServerPictureBox.BackColor = System.Drawing.SystemColors.Control; this.EditServerPictureBox.Cursor = System.Windows.Forms.Cursors.Hand; - this.EditServerPictureBox.Image = global::Netch.Properties.Resources.edit; + this.EditServerPictureBox.Image = global::Netrix.Properties.Resources.edit; this.EditServerPictureBox.Location = new System.Drawing.Point(3, 3); this.EditServerPictureBox.Name = "EditServerPictureBox"; this.EditServerPictureBox.Size = new System.Drawing.Size(16, 16); @@ -449,7 +458,7 @@ private void InitializeComponent() // CopyLinkPictureBox // this.CopyLinkPictureBox.Cursor = System.Windows.Forms.Cursors.Hand; - this.CopyLinkPictureBox.Image = global::Netch.Properties.Resources.CopyLink; + this.CopyLinkPictureBox.Image = global::Netrix.Properties.Resources.CopyLink; this.CopyLinkPictureBox.Location = new System.Drawing.Point(72, 3); this.CopyLinkPictureBox.Name = "CopyLinkPictureBox"; this.CopyLinkPictureBox.Size = new System.Drawing.Size(18, 18); @@ -461,7 +470,7 @@ private void InitializeComponent() // DeleteServerPictureBox // this.DeleteServerPictureBox.Cursor = System.Windows.Forms.Cursors.Hand; - this.DeleteServerPictureBox.Image = global::Netch.Properties.Resources.delete; + this.DeleteServerPictureBox.Image = global::Netrix.Properties.Resources.delete; this.DeleteServerPictureBox.Location = new System.Drawing.Point(26, 3); this.DeleteServerPictureBox.Name = "DeleteServerPictureBox"; this.DeleteServerPictureBox.Size = new System.Drawing.Size(16, 16); @@ -473,7 +482,7 @@ private void InitializeComponent() // SpeedPictureBox // this.SpeedPictureBox.Cursor = System.Windows.Forms.Cursors.Hand; - this.SpeedPictureBox.Image = global::Netch.Properties.Resources.speed; + this.SpeedPictureBox.Image = global::Netrix.Properties.Resources.speed; this.SpeedPictureBox.Location = new System.Drawing.Point(49, 3); this.SpeedPictureBox.Name = "SpeedPictureBox"; this.SpeedPictureBox.Size = new System.Drawing.Size(16, 16); @@ -501,7 +510,7 @@ private void InitializeComponent() // EditModePictureBox // this.EditModePictureBox.Cursor = System.Windows.Forms.Cursors.Hand; - this.EditModePictureBox.Image = global::Netch.Properties.Resources.edit; + this.EditModePictureBox.Image = global::Netrix.Properties.Resources.edit; this.EditModePictureBox.Location = new System.Drawing.Point(3, 3); this.EditModePictureBox.Name = "EditModePictureBox"; this.EditModePictureBox.Size = new System.Drawing.Size(16, 16); @@ -513,7 +522,7 @@ private void InitializeComponent() // DeleteModePictureBox // this.DeleteModePictureBox.Cursor = System.Windows.Forms.Cursors.Hand; - this.DeleteModePictureBox.Image = global::Netch.Properties.Resources.delete; + this.DeleteModePictureBox.Image = global::Netrix.Properties.Resources.delete; this.DeleteModePictureBox.Location = new System.Drawing.Point(26, 3); this.DeleteModePictureBox.Name = "DeleteModePictureBox"; this.DeleteModePictureBox.Size = new System.Drawing.Size(16, 16); @@ -617,7 +626,7 @@ private void InitializeComponent() // NotifyIcon // this.NotifyIcon.ContextMenuStrip = this.NotifyMenu; - this.NotifyIcon.Text = "Netch"; + this.NotifyIcon.Text = "Netrix"; this.NotifyIcon.Visible = true; this.NotifyIcon.MouseDoubleClick += new System.Windows.Forms.MouseEventHandler(this.NotifyIcon_MouseDoubleClick); // @@ -716,13 +725,13 @@ private void InitializeComponent() this.Controls.Add(this.MenuStrip); this.Controls.Add(this.StatusStrip); this.Controls.Add(this.flowLayoutPanel1); - this.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point); + this.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point); this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle; this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4); this.MaximizeBox = false; this.Name = "MainForm"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; - this.Text = "Netch"; + this.Text = "Netrix"; this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.MainForm_FormClosing); this.Load += new System.EventHandler(this.MainForm_Load); this.MenuStrip.ResumeLayout(false); @@ -753,7 +762,7 @@ private void InitializeComponent() private System.Windows.Forms.ToolStripMenuItem CreateRouteTableRuleToolStripMenuItem; - private System.Windows.Forms.ToolStripMenuItem RemoveNetchFirewallRulesToolStripMenuItem; + private System.Windows.Forms.ToolStripMenuItem RemoveNetrixFirewallRulesToolStripMenuItem; private System.Windows.Forms.ToolStripButton AboutToolStripButton; private System.Windows.Forms.ToolStripMenuItem CleanDNSCacheToolStripMenuItem; @@ -806,6 +815,7 @@ private void InitializeComponent() private System.Windows.Forms.ToolStripStatusLabel NatTypeStatusLightLabel; private System.Windows.Forms.ToolStripStatusLabel blankToolStripStatusLabel; private System.Windows.Forms.ToolStripMenuItem FAQToolStripMenuItem; + private System.Windows.Forms.ToolStripMenuItem DocumentationToolStripMenuItem; #endregion diff --git a/Netch/Forms/MainForm.cs b/Netrix/Forms/MainForm.cs similarity index 82% rename from Netch/Forms/MainForm.cs rename to Netrix/Forms/MainForm.cs index ef05645..355feaa 100644 --- a/Netch/Forms/MainForm.cs +++ b/Netrix/Forms/MainForm.cs @@ -6,17 +6,17 @@ using Windows.Win32.UI.WindowsAndMessaging; using Microsoft.VisualStudio.Threading; using Microsoft.Win32; -using Netch.Controllers; -using Netch.Enums; -using Netch.Forms.ModeForms; -using Netch.Interfaces; -using Netch.Models; -using Netch.Models.Modes; -using Netch.Properties; -using Netch.Services; -using Netch.Utils; - -namespace Netch.Forms; +using Netrix.Controllers; +using Netrix.Enums; +using Netrix.Forms.ModeForms; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Models.Modes; +using Netrix.Properties; +using Netrix.Services; +using Netrix.Utils; + +namespace Netrix.Forms; [Fody.ConfigureAwait(true)] public partial class MainForm : Form @@ -26,24 +26,48 @@ public partial class MainForm : Form private readonly Dictionary _mainFormText = new(); private bool _textRecorded; + private readonly ToolTip _tips; public MainForm() { InitializeComponent(); NotifyIcon.Icon = Icon = Resources.icon; + _tips = Tips.Create(this, + (EditServerPictureBox, "Edit the selected server"), + (DeleteServerPictureBox, "Delete the selected server"), + (SpeedPictureBox, "Test the delay (ping) of all servers"), + (CopyLinkPictureBox, "Copy the share link of the selected server"), + (EditModePictureBox, "Edit the selected mode"), + (DeleteModePictureBox, "Delete the selected mode"), + (ServerLabel, "The proxy server your traffic goes through. Add servers from the Server menu."), + (ServerComboBox, "The proxy server your traffic goes through. Add servers from the Server menu.\nThe number is its delay in ms: lower is faster."), + (ModeLabel, "What gets proxied. Add or edit modes from the Mode menu."), + (ModeComboBox, "What gets proxied:\nProcess = chosen apps\nTUN = the whole PC\nShare = other devices on your network\nWeb = the Windows system proxy"), + (ProfileLabel, "Name for a quick-start profile."), + (ProfileNameText, "Name for a quick-start profile.\nType a name, pick a server and a mode, then Ctrl+Click a profile button to save."), + (ControlButton, "Start or stop the proxy. Netrix needs to run as administrator."), + (SettingsButton, "Open the settings")); + Tips.Set("Download speed", DownloadSpeedLabel); + Tips.Set("Upload speed", UploadSpeedLabel); + Tips.Set("Data used since you pressed Start", UsedBandwidthLabel); + Tips.Set("Delay of a web request through the proxy", HttpStatusLabel); + Tips.Set("NAT type through the proxy: 1 open, 2 restricted, 3 symmetric (hard for games). Click to test again.", NatTypeStatusLabel, NatTypeStatusLightLabel); + Tips.Set("A new version is available. Click to update.", NewVersionLabel); + Tips.Set("Netrix version. Click to open the releases page.", VersionLabel); + AddAddServerToolStripMenuItems(); #region i18N Translations if (Flags.NoSupport) - _mainFormText.Add(Name, new[] { "{0} ({1})", "Netch", "No Support" }); + _mainFormText.Add(Name, new[] { "{0} ({1})", UpdateChecker.Name, "No Support" }); _mainFormText.Add(UninstallServiceToolStripMenuItem.Name, new[] { "Uninstall {0}", "NF Service" }); #endregion - // 监听电源事件 + // Listen for power events SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged; } @@ -68,7 +92,7 @@ private void AddAddServerToolStripMenuItems() private void MainForm_Load(object sender, EventArgs e) { - // 计算 ComboBox绘制 目标宽度 + // Compute the target width for drawing the ComboBox RecordSize(); LoadServers(); @@ -77,28 +101,28 @@ private void MainForm_Load(object sender, EventArgs e) ModeService.Instance.Load(); - // 加载翻译 + // Load translations TranslateControls(); - // 隐藏 ConnectivityStatusLabel + // Hide ConnectivityStatusLabel ConnectivityStatusVisible(false); - // 加载快速配置 + // Load quick-start profiles LoadProfiles(); - // 检查更新 + // Check for updates if (Global.Settings.CheckUpdateWhenOpened) CheckUpdateAsync().Forget(); - // 检查订阅更新 + // Check for subscription updates if (Global.Settings.UpdateServersWhenOpened) UpdateServersFromSubscriptionAsync().Forget(); - // 打开软件时启动加速，产生开始按钮点击事件 + // Start the proxy when the app opens by raising a click on the Start button if (Global.Settings.StartWhenOpened) ControlButton.PerformClick(); - Program.SingleInstance.StartListenServer(); + Program.SingleInstance.StartListening(Program.SingleInstance_MessageReceived); } private void RecordSize() @@ -108,7 +132,7 @@ private void RecordSize() _numberBoxWrap = _numberBoxWidth / 30; _configurationGroupBoxHeight = ConfigurationGroupBox.Height; - _profileConfigurationHeight = ConfigurationGroupBox.Controls[0].Height / 3; // 因为 AutoSize, 所以得到的是Controls的总高度 + _profileConfigurationHeight = ConfigurationGroupBox.Controls[0].Height / 3; // AutoSize makes this the total height of the controls _profileGroupBoxPaddingHeight = ProfileGroupBox.Height - ProfileTable.Height; _profileTableHeight = ProfileTable.Height; } @@ -390,14 +414,14 @@ private async void UninstallServiceToolStripMenuItem_Click(object sender, EventA } } - private void RemoveNetchFirewallRulesToolStripMenuItem_Click(object sender, EventArgs e) + private void RemoveNetrixFirewallRulesToolStripMenuItem_Click(object sender, EventArgs e) { - Firewall.RemoveNetchFwRules(); + Firewall.RemoveNetrixFwRules(); } private void ShowHideConsoleToolStripMenuItem_Click(object sender, EventArgs e) { - var windowStyles = (WINDOW_STYLE)PInvoke.GetWindowLong(new HWND(Program.ConsoleHwnd), WINDOW_LONG_PTR_INDEX.GWL_STYLE); + var windowStyles = (WINDOW_STYLE)PInvoke.GetWindowLong(Program.ConsoleHwnd, WINDOW_LONG_PTR_INDEX.GWL_STYLE); var visible = windowStyles.HasFlag(WINDOW_STYLE.WS_VISIBLE); PInvoke.ShowWindow(Program.ConsoleHwnd, visible ? SHOW_WINDOW_CMD.SW_HIDE : SHOW_WINDOW_CMD.SW_SHOWNOACTIVATE); } @@ -405,7 +429,7 @@ private void ShowHideConsoleToolStripMenuItem_Click(object sender, EventArgs e) #endregion /// - /// 菜单栏强制退出 + /// Menu: force exit /// private void ForceExitToolStripMenuItem_Click(object sender, EventArgs e) { @@ -438,19 +462,21 @@ private async void NewVersionLabel_Click(object sender, EventArgs e) var progress = new Progress(); progress.ProgressChanged += (_, percentage) => { NewVersionLabel.Text = $"{percentage}%"; }; - string downloadDirectory = Path.Combine(Global.NetchDir, "data"); + string downloadDirectory = Path.Combine(Global.NetrixDir, "data"); var (updateFileName, sha256) = UpdateChecker.GetLatestUpdateFileNameAndHash(); - var updateFileUrl = UpdateChecker.LatestRelease.assets[0].browser_download_url!; + // the release body lists the hash by file name: take the asset with that name, not whichever is first + var updateFileUrl = UpdateChecker.LatestRelease.assets.FirstOrDefault(a => a.name == updateFileName)?.browser_download_url ?? + throw new MessageException($"Release has no asset named {updateFileName}"); var updateFileFullName = Path.Combine(downloadDirectory, updateFileName); - var updater = new Updater(updateFileFullName, Global.NetchDir); + var updater = new Updater(updateFileFullName, Global.NetrixDir); var downloaded = false; if (File.Exists(updateFileFullName)) { var fileHash = await Utils.Utils.Sha256CheckSumAsync(updateFileFullName); - if (fileHash == sha256) + if (fileHash.Equals(sha256, StringComparison.OrdinalIgnoreCase)) downloaded = true; else File.Delete(updateFileFullName); @@ -469,8 +495,22 @@ private async void NewVersionLabel_Click(object sender, EventArgs e) } var fileHash = await Utils.Utils.Sha256CheckSumAsync(updateFileFullName); - if (fileHash != sha256) + if (!fileHash.Equals(sha256, StringComparison.OrdinalIgnoreCase)) + { + File.Delete(updateFileFullName); throw new MessageException(i18N.Translate("The downloaded file has the wrong hash")); + } + } + + // the hash comes from the same release as the file: also require the signature made with the key that is not on GitHub + var signatureUrl = UpdateChecker.LatestRelease.assets.FirstOrDefault(a => a.name == updateFileName + ".sig")?.browser_download_url ?? + throw new MessageException(i18N.Translate("The release is not signed, so Netrix will not install it. Download it from the release page.")); + + var (_, signature) = await WebUtil.DownloadStringAsync(WebUtil.CreateRequest(signatureUrl)); + if (!UpdateSignature.Verify(updateFileFullName, signature)) + { + File.Delete(updateFileFullName); + throw new MessageException(i18N.Translate("The update has an invalid signature and was not installed")); } await StopAsync(); @@ -481,7 +521,7 @@ private async void NewVersionLabel_Click(object sender, EventArgs e) // release mutex, exit Program.SingleInstance.Dispose(); - Process.Start(Global.NetchExecutable); + Process.Start(Global.NetrixExecutable); Environment.Exit(0); } catch (MessageException exception) @@ -507,9 +547,14 @@ private void AboutToolStripButton_Click(object sender, EventArgs e) Show(); } + private void DocumentationToolStripMenuItem_Click(object sender, EventArgs e) + { + new HelpForm().ShowDialog(this); + } + private void fAQToolStripMenuItem_Click(object sender, EventArgs e) { - Utils.Utils.Open("https://docs.netch.org"); + Utils.Utils.Open("https://github.com/psnwd/netrix/issues"); } #endregion @@ -526,7 +571,7 @@ private async void ControlButton_Click(object? sender, EventArgs? e) Configuration.SaveAsync().Forget(); - // 服务器、模式 需选择 + // A server and a mode must be selected if (ServerComboBox.SelectedItem is not Server server) { MessageBoxX.Show(i18N.Translate("Please select a server first")); @@ -562,7 +607,7 @@ private async void ControlButton_Click(object? sender, EventArgs? e) if (Global.Settings.MinimizeWhenStarted) Minimize(); - // 自动检测延迟 + // Test the delay automatically async Task StartedPingAsync() { while (State == State.Started) @@ -625,14 +670,14 @@ private void LoadServers() private void SelectLastServer() { - // 如果值合法，选中该位置 + // If the value is valid, select that position if (Global.Settings.ServerComboBoxSelectedIndex > 0 && Global.Settings.ServerComboBoxSelectedIndex < ServerComboBox.Items.Count) ServerComboBox.SelectedIndex = Global.Settings.ServerComboBoxSelectedIndex; - // 如果值非法，且当前 ServerComboBox 中有元素，选择第一个位置 + // If the value is invalid and ServerComboBox has items, select the first one else if (ServerComboBox.Items.Count > 0) ServerComboBox.SelectedIndex = 0; - // 如果当前 ServerComboBox 中没元素，不做处理 + // If ServerComboBox is empty, do nothing } private void ServerComboBox_SelectionChangeCommitted(object sender, EventArgs o) @@ -642,7 +687,7 @@ private void ServerComboBox_SelectionChangeCommitted(object sender, EventArgs o) private async void EditServerPictureBox_Click(object sender, EventArgs e) { - // 当前ServerComboBox中至少有一项 + // ServerComboBox has at least one item if (!(ServerComboBox.SelectedItem is Server server)) { MessageBoxX.Show(i18N.Translate("Please select a server first")); @@ -682,7 +727,7 @@ void Enable() private void CopyLinkPictureBox_Click(object sender, EventArgs e) { - // 当前ServerComboBox中至少有一项 + // ServerComboBox has at least one item if (!(ServerComboBox.SelectedItem is Server server)) { MessageBoxX.Show(i18N.Translate("Please select a server first")); @@ -691,10 +736,10 @@ private void CopyLinkPictureBox_Click(object sender, EventArgs e) try { - //听说巨硬BUG经常会炸，所以Catch一下 :D + //Windows APIs fail now and then, so catch it :D string text; if (ModifierKeys == Keys.Control) - text = ShareLink.GetNetchLink(server); + text = ShareLink.GetNetrixLink(server); else text = ShareLink.GetShareLink(server); @@ -708,7 +753,7 @@ private void CopyLinkPictureBox_Click(object sender, EventArgs e) private void DeleteServerPictureBox_Click(object sender, EventArgs e) { - // 当前 ServerComboBox 中至少有一项 + // ServerComboBox has at least one item if (!(ServerComboBox.SelectedItem is Server server)) { MessageBoxX.Show(i18N.Translate("Please select a server first")); @@ -739,14 +784,14 @@ public void LoadModes() private void SelectLastMode() { - // 如果值合法，选中该位置 + // If the value is valid, select that position if (Global.Settings.ModeComboBoxSelectedIndex > 0 && Global.Settings.ModeComboBoxSelectedIndex < ModeComboBox.Items.Count) ModeComboBox.SelectedIndex = Global.Settings.ModeComboBoxSelectedIndex; - // 如果值非法，且当前 ModeComboBox 中有元素，选择第一个位置 + // If the value is invalid and ModeComboBox has items, select the first one else if (ModeComboBox.Items.Count > 0) ModeComboBox.SelectedIndex = 0; - // 如果当前 ModeComboBox 中没元素，不做处理 + // If ModeComboBox is empty, do nothing } private void ModeComboBox_SelectionChangeCommitted(object sender, EventArgs o) @@ -763,7 +808,7 @@ private void ModeComboBox_SelectionChangeCommitted(object sender, EventArgs o) private void EditModePictureBox_Click(object sender, EventArgs e) { - // 当前ModeComboBox中至少有一项 + // ModeComboBox has at least one item if (ModeComboBox.SelectedIndex == -1) { MessageBoxX.Show(i18N.Translate("Please select a mode first")); @@ -799,7 +844,7 @@ private void EditModePictureBox_Click(object sender, EventArgs e) private void DeleteModePictureBox_Click(object sender, EventArgs e) { - // 当前ModeComboBox中至少有一项 + // ModeComboBox has at least one item if (ModeComboBox.Items.Count <= 0 || ModeComboBox.SelectedIndex == -1) { MessageBoxX.Show(i18N.Translate("Please select a mode first")); @@ -862,6 +907,7 @@ private void LoadProfiles() }; b.Click += ProfileButton_Click; + _tips.SetToolTip(b, i18N.Translate("Quick-start profile\nClick: use the saved server and mode, and start\nCtrl+Click: save the current server and mode here\nShift+Click: delete")); ProfileTable.Controls.Add(b, i % columnCount, i / columnCount); } @@ -967,7 +1013,7 @@ private async void ProfileButton_Click([NotNull] object? sender, EventArgs? e) private State _state = State.Waiting; /// - /// 当前状态 + /// Current state /// public State State { @@ -979,7 +1025,7 @@ void StartDisableItems(bool enabled) ServerComboBox.Enabled = ModeComboBox.Enabled = EditModePictureBox.Enabled = EditServerPictureBox.Enabled = DeleteModePictureBox.Enabled = DeleteServerPictureBox.Enabled = enabled; - // 启动需要禁用的控件 + // Controls to disable while starting ServerToolStripMenuItem.Enabled = ModeToolStripMenuItem.Enabled = SubscriptionToolStripMenuItem.Enabled = UninstallServiceToolStripMenuItem.Enabled = enabled; } @@ -1044,10 +1090,27 @@ public async Task StopAsync() private async Task StopCoreAsync() { State = State.Stopping; - _discoveryNatCts?.Cancel(); - _httpConnectCts?.Cancel(); - await MainController.StopAsync(); - State = State.Stopped; + + try + { + // CancelAsync: Cancel() runs the callbacks of a stuck NAT/HTTP test on this (UI) thread + if (_discoveryNatCts is { } nat) + await nat.CancelAsync(); + + if (_httpConnectCts is { } http) + await http.CancelAsync(); + + await MainController.StopAsync(); + } + catch (Exception e) + { + Log.Error(e, "Stop failed"); + } + finally + { + // never stay in "Stopping": the Start button would stay disabled and the window looks frozen + State = State.Stopped; + } } private bool IsWaiting() => IsWaiting(_state); @@ -1058,7 +1121,7 @@ private static bool IsWaiting(State state) } /// - /// 更新状态栏文本 + /// Update the status bar text /// /// public void StatusText(string? text = null) @@ -1087,7 +1150,9 @@ public void BandwidthState(bool state) if (IsWaiting()) return; - UsedBandwidthLabel.Visible /*= UploadSpeedLabel.Visible*/ = DownloadSpeedLabel.Visible = state; + UsedBandwidthLabel.Visible = DownloadSpeedLabel.Visible = state; + if (!state) + UploadSpeedLabel.Visible = false; } private void UpdateNatTypeStatusLabelText(string? text, string? country = null) @@ -1118,7 +1183,7 @@ private void ConnectivityStatusVisible(bool visible) } /// - /// 更新 NAT指示灯颜色 + /// Update the NAT indicator color /// /// NAT Type. keep default(-1) to Hide Light private void UpdateNatTypeLight(int natType = -1) @@ -1235,7 +1300,7 @@ private async void SystemEvents_PowerModeChanged(object sender, PowerModeChanged { switch (e.Mode) { - case PowerModes.Suspend: //操作系统即将挂起 + case PowerModes.Suspend: //The operating system is about to suspend if (!IsWaiting()) { _resumeFlag = true; @@ -1244,7 +1309,7 @@ private async void SystemEvents_PowerModeChanged(object sender, PowerModeChanged } break; - case PowerModes.Resume: //操作系统即将从挂起状态继续 + case PowerModes.Resume: //The operating system is about to resume from suspend if (_resumeFlag) { _resumeFlag = false; @@ -1260,13 +1325,13 @@ private async void SystemEvents_PowerModeChanged(object sender, PowerModeChanged private void Minimize() { - // 使关闭时窗口向右下角缩小的效果 + // Shrink the window toward the bottom-right corner on close WindowState = FormWindowState.Minimized; if (_isFirstCloseWindow) { - // 显示提示语 - NotifyTip(i18N.Translate("Netch is now minimized to the notification bar, double click this icon to restore.")); + // Show the hint + NotifyTip(i18N.Translate("Netrix is now minimized to the notification bar, double click this icon to restore.")); _isFirstCloseWindow = false; } @@ -1308,13 +1373,13 @@ private void MainForm_FormClosing(object sender, FormClosingEventArgs e) { if (e.CloseReason == CloseReason.UserClosing && State != State.Terminating) { - // 取消"关闭窗口"事件 - e.Cancel = true; // 取消关闭窗体 + // Cancel the "close window" event + e.Cancel = true; // Cancel closing the form - // 如果未勾选关闭窗口时退出，隐藏至右下角托盘图标 + // If "Exit when closed" is off, hide to the tray icon if (!Global.Settings.ExitWhenClosed) Minimize(); - // 如果勾选了关闭时退出，自动点击退出按钮 + // If "Exit when closed" is on, click the Exit button else Exit(); } @@ -1352,30 +1417,35 @@ void OnUpdateCheckerOnNewVersionFound(object? o, EventArgs? eventArgs) #region NetTraffic /// - /// 上一次下载的流量 + /// Download traffic at the last update /// public ulong LastDownloadBandwidth; /// - /// 上一次上传的流量 + /// Upload traffic at the last update /// public ulong LastUploadBandwidth; - public void OnBandwidthUpdated(ulong download) + public void OnBandwidthUpdated(ulong download, ulong? upload = null) { if (InvokeRequired) { - BeginInvoke(() => OnBandwidthUpdated(download)); + BeginInvoke(() => OnBandwidthUpdated(download, upload)); return; } try { UsedBandwidthLabel.Text = $"{i18N.Translate("Used", ": ")}{Bandwidth.Compute(download)}"; - //UploadSpeedLabel.Text = $"↑: {Utils.Bandwidth.Compute(upload - LastUploadBandwidth)}/s"; - DownloadSpeedLabel.Text = $"↑↓: {Bandwidth.Compute(download - LastDownloadBandwidth)}/s"; + // ETW only sees received bytes, so without an upload value the single label stays "↑↓" + DownloadSpeedLabel.Text = $"{(upload is null ? "↑↓" : "↓")}: {Bandwidth.Compute(download - LastDownloadBandwidth)}/s"; + if (upload is { } up) + { + UploadSpeedLabel.Visible = true; + UploadSpeedLabel.Text = $"↑: {Bandwidth.Compute(up - LastUploadBandwidth)}/s"; + LastUploadBandwidth = up; + } - //LastUploadBandwidth = upload; LastDownloadBandwidth = download; Refresh(); } @@ -1395,7 +1465,7 @@ private void ShowMainFormToolStripButton_Click(object sender, EventArgs e) } /// - /// 通知图标右键菜单退出 + /// Tray icon menu: exit /// private void ExitToolStripButton_Click(object sender, EventArgs e) { @@ -1409,7 +1479,7 @@ private void NotifyIcon_MouseDoubleClick(object? sender, MouseEventArgs? e) public void NotifyTip(string text, int timeout = 0, bool info = true) { - // 会阻塞线程 timeout 秒(?) + // Blocks the thread for timeout seconds (?) NotifyIcon.ShowBalloonTip(timeout, UpdateChecker.Name, text, info ? ToolTipIcon.Info : ToolTipIcon.Error); } @@ -1427,26 +1497,26 @@ private void ComboBox_DrawItem(object sender, DrawItemEventArgs e) if (sender is not ComboBox cbx) return; - // 绘制背景颜色 + // Draw the background color e.Graphics.FillRectangle(Brushes.White, e.Bounds); if (e.Index < 0) return; - // 绘制 备注/名称 字符串 + // Draw the remark / name string TextRenderer.DrawText(e.Graphics, cbx.Items[e.Index].ToString(), cbx.Font, e.Bounds, Color.Black, TextFormatFlags.Left); switch (cbx.Items[e.Index]) { case Server item: { - // 计算延迟底色 + // Compute the delay background color var numBoxBackBrush = item.Delay switch { > 200 => Brushes.Red, > 80 => Brushes.Yellow, >= 0 => _greenBrush, _ => Brushes.Gray }; - // 绘制延迟底色 + // Draw the delay background e.Graphics.FillRectangle(numBoxBackBrush, _numberBoxX, e.Bounds.Y, _numberBoxWidth, e.Bounds.Height); - // 绘制延迟字符串 + // Draw the delay string TextRenderer.DrawText(e.Graphics, item.Delay.ToString(), cbx.Font, @@ -1459,10 +1529,10 @@ private void ComboBox_DrawItem(object sender, DrawItemEventArgs e) case Mode item: { /* - // 绘制 模式Box 底色 + // Draw the mode box background e.Graphics.FillRectangle(Brushes.Gray, _numberBoxX, e.Bounds.Y, _numberBoxWidth, e.Bounds.Height); - // 绘制 模式行数 字符串 + // Draw the mode line count string TextRenderer.DrawText(e.Graphics, item.Content.Count.ToString(), cbx.Font, diff --git a/Netch/Forms/MainForm.resx b/Netrix/Forms/MainForm.resx similarity index 100% rename from Netch/Forms/MainForm.resx rename to Netrix/Forms/MainForm.resx diff --git a/Netch/Forms/MessageBoxX.cs b/Netrix/Forms/MessageBoxX.cs similarity index 74% rename from Netch/Forms/MessageBoxX.cs rename to Netrix/Forms/MessageBoxX.cs index 4a5d37f..de3643c 100644 --- a/Netch/Forms/MessageBoxX.cs +++ b/Netrix/Forms/MessageBoxX.cs @@ -1,17 +1,17 @@ -using Netch.Enums; -using Netch.Utils; +using Netrix.Enums; +using Netrix.Utils; -namespace Netch.Forms; +namespace Netrix.Forms; public static class MessageBoxX { /// /// - /// 内容 - /// 自定义标题 - /// 弹窗等级 (标题, 图标) - /// 需要确认 - /// 阻止 owner Focus() 直到 Messageox 被关闭 + /// Message text + /// Custom title + /// Dialog level (title, icon) + /// Needs confirmation + /// Blocks owner.Focus() until the message box is closed public static DialogResult Show(string text, LogLevel level = LogLevel.INFO, string title = "", diff --git a/Netch/Forms/ModeForms/ModeEditorUtils.cs b/Netrix/Forms/ModeForms/ModeEditorUtils.cs similarity index 94% rename from Netch/Forms/ModeForms/ModeEditorUtils.cs rename to Netrix/Forms/ModeForms/ModeEditorUtils.cs index 9968ebd..087f151 100644 --- a/Netch/Forms/ModeForms/ModeEditorUtils.cs +++ b/Netrix/Forms/ModeForms/ModeEditorUtils.cs @@ -1,6 +1,6 @@ using System.Text; -namespace Netch.Forms.ModeForms; +namespace Netrix.Forms.ModeForms; public static class ModeEditorUtils { diff --git a/Netch/Forms/ModeForms/ProcessForm.Designer.cs b/Netrix/Forms/ModeForms/ProcessForm.Designer.cs similarity index 98% rename from Netch/Forms/ModeForms/ProcessForm.Designer.cs rename to Netrix/Forms/ModeForms/ProcessForm.Designer.cs index 75f1d92..a1a8776 100644 --- a/Netch/Forms/ModeForms/ProcessForm.Designer.cs +++ b/Netrix/Forms/ModeForms/ProcessForm.Designer.cs @@ -1,7 +1,7 @@ using System; using System.Windows.Forms; -namespace Netch.Forms.ModeForms +namespace Netrix.Forms.ModeForms { partial class ProcessForm { @@ -41,19 +41,19 @@ private void InitializeComponent() this.ControlButton = new System.Windows.Forms.Button(); this.OptionsGroupBox = new System.Windows.Forms.GroupBox(); this.ModeSpecificOptionsLabel = new System.Windows.Forms.Label(); - this.HandleTCPCheckBox = new Netch.Forms.SyncGlobalCheckBox(); - this.HandleUDPCheckBox = new Netch.Forms.SyncGlobalCheckBox(); - this.HandleDNSCheckBox = new Netch.Forms.SyncGlobalCheckBox(); + this.HandleTCPCheckBox = new Netrix.Forms.SyncGlobalCheckBox(); + this.HandleUDPCheckBox = new Netrix.Forms.SyncGlobalCheckBox(); + this.HandleDNSCheckBox = new Netrix.Forms.SyncGlobalCheckBox(); this.DNSLabel = new System.Windows.Forms.Label(); this.DNSTextBox = new System.Windows.Forms.TextBox(); - this.HandleProcDNSCheckBox = new Netch.Forms.SyncGlobalCheckBox(); - this.ProxyDNSCheckBox = new Netch.Forms.SyncGlobalCheckBox(); - this.HandleICMPCheckBox = new Netch.Forms.SyncGlobalCheckBox(); + this.HandleProcDNSCheckBox = new Netrix.Forms.SyncGlobalCheckBox(); + this.ProxyDNSCheckBox = new Netrix.Forms.SyncGlobalCheckBox(); + this.HandleICMPCheckBox = new Netrix.Forms.SyncGlobalCheckBox(); this.ICMPDelayLabel = new System.Windows.Forms.Label(); this.ICMPDelayTextBox = new System.Windows.Forms.TextBox(); this.HandleLoopbackCheckBox = new System.Windows.Forms.CheckBox(); this.HandleLANCheckBox = new System.Windows.Forms.CheckBox(); - this.HandleChildProcCheckBox = new Netch.Forms.SyncGlobalCheckBox(); + this.HandleChildProcCheckBox = new Netrix.Forms.SyncGlobalCheckBox(); this.RuleTableLayoutPanel = new System.Windows.Forms.TableLayoutPanel(); this.ValidationButton = new System.Windows.Forms.Button(); this.HandleTableLayoutPanel = new System.Windows.Forms.TableLayoutPanel(); @@ -572,7 +572,7 @@ private void InitializeComponent() this.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink; this.ClientSize = new System.Drawing.Size(934, 591); this.Controls.Add(this.ConfigurationGroupBox); - this.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point); + this.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point); this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4); this.MinimumSize = new System.Drawing.Size(950, 630); this.Name = "ProcessForm"; diff --git a/Netch/Forms/ModeForms/ProcessForm.cs b/Netrix/Forms/ModeForms/ProcessForm.cs similarity index 71% rename from Netch/Forms/ModeForms/ProcessForm.cs rename to Netrix/Forms/ModeForms/ProcessForm.cs index b7fbec0..412fdec 100644 --- a/Netch/Forms/ModeForms/ProcessForm.cs +++ b/Netrix/Forms/ModeForms/ProcessForm.cs @@ -1,13 +1,13 @@ using System.Net; -using Netch.Controllers; -using Netch.Enums; -using Netch.Models.Modes; -using Netch.Models.Modes.ProcessMode; -using Netch.Properties; -using Netch.Services; -using Netch.Utils; +using Netrix.Controllers; +using Netrix.Enums; +using Netrix.Models.Modes; +using Netrix.Models.Modes.ProcessMode; +using Netrix.Properties; +using Netrix.Services; +using Netrix.Utils; -namespace Netch.Forms.ModeForms; +namespace Netrix.Forms.ModeForms; [Fody.ConfigureAwait(true)] public partial class ProcessForm : BindingForm @@ -17,9 +17,9 @@ public partial class ProcessForm : BindingForm private readonly Redirector _mode; /// - /// 编辑模式 + /// Edit a mode /// - /// 模式 + /// Mode public ProcessForm(Mode? mode = null) { switch (mode) @@ -37,6 +37,35 @@ public ProcessForm(Mode? mode = null) } InitializeComponent(); + + Tips.Create(this, + (RemarkLabel, "Name of this mode as shown in the mode list."), + (RemarkTextBox, "Name of this mode as shown in the mode list."), + (FilenameLabel, "File the mode is saved in, inside the mode folder."), + (FilenameTextBox, "File the mode is saved in, inside the mode folder."), + (HandleLabel, "Programs that go through the proxy. One rule per line. A rule is a regular expression matched on the program path, e.g. chrome.exe"), + (HandleRuleRichTextBox, "Programs that go through the proxy. One rule per line. A rule is a regular expression matched on the program path, e.g. chrome.exe"), + (BypassLabel, "Programs that never go through the proxy, even if a Handle rule matches. One rule per line."), + (BypassRuleRichTextBox, "Programs that never go through the proxy, even if a Handle rule matches. One rule per line."), + (HandleSelectButton, "Choose a folder: adds a rule for every program inside it."), + (BypassSelectButton, "Choose a folder: adds a rule for every program inside it."), + (HandleScanButton, "Choose a folder: lists the .exe files inside it as rules (up to 50)."), + (BypassScanButton, "Choose a folder: lists the .exe files inside it as rules (up to 50)."), + (ValidationButton, "Check that the Bypass rules are valid."), + (HandleTCPCheckBox, "Send the TCP traffic of these programs through the proxy (web, most apps)."), + (HandleUDPCheckBox, "Send the UDP traffic of these programs through the proxy (games, voice). The server must support UDP."), + (HandleICMPCheckBox, "Also handle ping (ICMP)."), + (ICMPDelayLabel, "Delay added to ping replies in milliseconds."), + (ICMPDelayTextBox, "Delay added to ping replies in milliseconds."), + (HandleDNSCheckBox, "Redirect the DNS lookups of these programs to the DNS server below."), + (DNSLabel, "DNS server used when DNS handling is on, as address:port, e.g. 1.1.1.1:53."), + (DNSTextBox, "DNS server used when DNS handling is on, as address:port, e.g. 1.1.1.1:53."), + (HandleProcDNSCheckBox, "Only redirect DNS lookups made by the handled programs."), + (ProxyDNSCheckBox, "Send the DNS lookups through the proxy."), + (HandleLoopbackCheckBox, "Also handle traffic to this PC itself (127.0.0.1)."), + (HandleLANCheckBox, "Also handle traffic to your local network. Off = LAN traffic stays direct."), + (HandleChildProcCheckBox, "Also handle programs started by these programs."), + (ControlButton, "Save the mode.")); Icon = Resources.icon; InitBindings(); diff --git a/Netch/Forms/ModeForms/ProcessForm.resx b/Netrix/Forms/ModeForms/ProcessForm.resx similarity index 100% rename from Netch/Forms/ModeForms/ProcessForm.resx rename to Netrix/Forms/ModeForms/ProcessForm.resx diff --git a/Netch/Forms/ModeForms/RouteForm.Designer.cs b/Netrix/Forms/ModeForms/RouteForm.Designer.cs similarity index 99% rename from Netch/Forms/ModeForms/RouteForm.Designer.cs rename to Netrix/Forms/ModeForms/RouteForm.Designer.cs index c9ec574..d09aaf5 100644 --- a/Netch/Forms/ModeForms/RouteForm.Designer.cs +++ b/Netrix/Forms/ModeForms/RouteForm.Designer.cs @@ -1,7 +1,7 @@ using System.ComponentModel; -using Netch.Properties; +using Netrix.Properties; -namespace Netch.Forms.ModeForms +namespace Netrix.Forms.ModeForms { partial class RouteForm { @@ -40,7 +40,7 @@ private void InitializeComponent() this.BypassLabel = new System.Windows.Forms.Label(); this.BypassContentTableLayoutPanel = new System.Windows.Forms.TableLayoutPanel(); this.BypassRuleRichTextBox = new System.Windows.Forms.RichTextBox(); - this.HandleDNSCheckBox = new Netch.Forms.SyncGlobalCheckBox(); + this.HandleDNSCheckBox = new Netrix.Forms.SyncGlobalCheckBox(); this.DNSLabel = new System.Windows.Forms.Label(); this.DNSTextBox = new System.Windows.Forms.TextBox(); this.UseCustomDNSCheckBox = new System.Windows.Forms.CheckBox(); diff --git a/Netch/Forms/ModeForms/RouteForm.cs b/Netrix/Forms/ModeForms/RouteForm.cs similarity index 68% rename from Netch/Forms/ModeForms/RouteForm.cs rename to Netrix/Forms/ModeForms/RouteForm.cs index 0fcdf4f..b479d6e 100644 --- a/Netch/Forms/ModeForms/RouteForm.cs +++ b/Netrix/Forms/ModeForms/RouteForm.cs @@ -1,10 +1,10 @@ -using Netch.Models.Modes; -using Netch.Models.Modes.TunMode; -using Netch.Properties; -using Netch.Services; -using Netch.Utils; +using Netrix.Models.Modes; +using Netrix.Models.Modes.TunMode; +using Netrix.Properties; +using Netrix.Services; +using Netrix.Utils; -namespace Netch.Forms.ModeForms; +namespace Netrix.Forms.ModeForms; [Fody.ConfigureAwait(true)] public partial class RouteForm : BindingForm @@ -30,6 +30,21 @@ public RouteForm(Mode? mode = null) } InitializeComponent(); + + Tips.Create(this, + (RemarkLabel, "Name of this mode as shown in the mode list."), + (RemarkTextBox, "Name of this mode as shown in the mode list."), + (FilenameLabel, "File the mode is saved in, inside the mode folder."), + (FilenameTextBox, "File the mode is saved in, inside the mode folder."), + (HandleLabel, "IP addresses and ranges that go through the proxy. One per line, e.g. 8.8.8.8 or 1.2.3.0/24."), + (HandleRuleRichTextBox, "IP addresses and ranges that go through the proxy. One per line, e.g. 8.8.8.8 or 1.2.3.0/24."), + (BypassLabel, "IP addresses and ranges that never go through the proxy. One per line, e.g. 192.168.0.0/16."), + (BypassRuleRichTextBox, "IP addresses and ranges that never go through the proxy. One per line, e.g. 192.168.0.0/16."), + (HandleDNSCheckBox, "Send DNS lookups through the proxy too."), + (UseCustomDNSCheckBox, "Use the DNS server below for this mode."), + (DNSLabel, "DNS server for this mode."), + (DNSTextBox, "DNS server for this mode."), + (ControlButton, "Save the mode.")); Icon = Resources.icon; diff --git a/Netch/Forms/ModeForms/RouteForm.resx b/Netrix/Forms/ModeForms/RouteForm.resx similarity index 100% rename from Netch/Forms/ModeForms/RouteForm.resx rename to Netrix/Forms/ModeForms/RouteForm.resx diff --git a/Netch/Forms/ServerForm.cs b/Netrix/Forms/ServerForm.cs similarity index 97% rename from Netch/Forms/ServerForm.cs rename to Netrix/Forms/ServerForm.cs index ba1b8fd..7943ea8 100644 --- a/Netch/Forms/ServerForm.cs +++ b/Netrix/Forms/ServerForm.cs @@ -1,10 +1,10 @@ #nullable disable using System.ComponentModel; -using Netch.Models; -using Netch.Properties; -using Netch.Utils; +using Netrix.Models; +using Netrix.Properties; +using Netrix.Utils; -namespace Netch.Forms; +namespace Netrix.Forms; [DesignerCategory(@"Code")] [Fody.ConfigureAwait(true)] @@ -313,9 +313,9 @@ private void InitializeComponent() AutoSizeMode = AutoSizeMode.GrowAndShrink; ClientSize = new Size(444, 137); Controls.Add(ConfigurationGroupBox); - Font = new Font("微软雅黑", 9F, FontStyle.Regular, GraphicsUnit.Point, 134); + Font = new Font("Segoe UI", 9F, FontStyle.Regular, GraphicsUnit.Point); FormBorderStyle = FormBorderStyle.FixedSingle; - Icon = Icon.FromHandle(Resources.Netch.GetHicon()); + Icon = Icon.FromHandle(Resources.Netrix.GetHicon()); Margin = new Padding(3, 4, 3, 4); MaximizeBox = false; Name = "ServerForm"; diff --git a/Netch/Forms/SettingForm.Designer.cs b/Netrix/Forms/SettingForm.Designer.cs similarity index 99% rename from Netch/Forms/SettingForm.Designer.cs rename to Netrix/Forms/SettingForm.Designer.cs index bcbda2b..74dcf3f 100644 --- a/Netch/Forms/SettingForm.Designer.cs +++ b/Netrix/Forms/SettingForm.Designer.cs @@ -1,6 +1,6 @@ using System.ComponentModel; -namespace Netch.Forms +namespace Netrix.Forms { partial class SettingForm { diff --git a/Netch/Forms/SettingForm.cs b/Netrix/Forms/SettingForm.cs similarity index 62% rename from Netch/Forms/SettingForm.cs rename to Netrix/Forms/SettingForm.cs index 97d896a..430b6ed 100644 --- a/Netch/Forms/SettingForm.cs +++ b/Netrix/Forms/SettingForm.cs @@ -1,8 +1,8 @@ using System.Net; -using Netch.Properties; -using Netch.Utils; +using Netrix.Properties; +using Netrix.Utils; -namespace Netch.Forms; +namespace Netrix.Forms; [Fody.ConfigureAwait(true)] public partial class SettingForm : BindingForm @@ -12,6 +12,74 @@ public SettingForm() InitializeComponent(); Icon = Resources.icon; i18N.TranslateForm(this); + AcceptButton = ControlButton; + Tips.Create(this, + // General + (Socks5PortLabel, "Port of the local SOCKS5 proxy that Netrix opens on this PC."), + (Socks5PortTextBox, "Port of the local SOCKS5 proxy that Netrix opens on this PC."), + (AllowDevicesCheckBox, "Let other devices on your network use this PC's proxy.\nOff = only this PC (safer)."), + (ServerPingTypeLabel, "How the server delay is measured."), + (ICMPingRadioBtn, "Ping with ICMP. Some servers and firewalls block it."), + (TCPingRadioBtn, "Connect with TCP to the server port. Works almost everywhere (recommended)."), + (ProfileCountLabel, "How many quick-start profile buttons to show on the main window. 0 hides them."), + (ProfileCountTextBox, "How many quick-start profile buttons to show on the main window. 0 hides them."), + (DetectionTickLabel, "Test the delay of all servers every N seconds while Netrix is open. 0 turns it off."), + (DetectionTickTextBox, "Test the delay of all servers every N seconds while Netrix is open. 0 turns it off."), + (StartedPingLabel, "After you press Start, wait N seconds, then test the delay once. -1 turns it off."), + (StartedPingIntervalTextBox, "After you press Start, wait N seconds, then test the delay once. -1 turns it off."), + (STUNServerLabel, "Server used for the NAT type test in the status bar. It must support RFC 5780, e.g. stun.1und1.de."), + (STUN_ServerComboBox, "Server used for the NAT type test in the status bar. It must support RFC 5780, e.g. stun.1und1.de."), + (LanguageLabel, "Language of the Netrix interface."), + (LanguageComboBox, "Language of the Netrix interface."), + // Process mode + (FilterTCPCheckBox, "Send the TCP traffic of chosen programs through the proxy (web, most apps)."), + (FilterUDPCheckBox, "Send the UDP traffic of chosen programs through the proxy (games, voice, QUIC). The server must support UDP."), + (FilterICMPCheckBox, "Also handle ping (ICMP) of chosen programs."), + (ICMPDelayLabel, "Delay added to ping replies in milliseconds."), + (ICMPDelayTextBox, "Delay added to ping replies in milliseconds."), + (FilterDNSCheckBox, "Redirect the DNS lookups of chosen programs to the DNS server below, so names resolve correctly through the proxy."), + (DNSHijackLabel, "DNS server used when DNS handling is on."), + (DNSHijackHostTextBox, "DNS server used when DNS handling is on, as address:port, e.g. 1.1.1.1:53."), + (HandleProcDNSCheckBox, "Only redirect DNS lookups made by the chosen programs. Off = every program's DNS."), + (DNSProxyCheckBox, "Send the DNS lookups through the proxy server instead of straight out."), + (ChildProcessHandleCheckBox, "Also handle programs started by the chosen programs."), + // TUN + (TUNTAPAddressLabel, "IP address of the virtual network adapter. Change only if it clashes with your network."), + (TUNTAPAddressTextBox, "IP address of the virtual network adapter. Change only if it clashes with your network."), + (TUNTAPNetmaskLabel, "Netmask of the virtual adapter."), + (TUNTAPNetmaskTextBox, "Netmask of the virtual adapter."), + (TUNTAPGatewayLabel, "Gateway of the virtual adapter. Normally the first address of its network."), + (TUNTAPGatewayTextBox, "Gateway of the virtual adapter. Normally the first address of its network."), + (UseCustomDNSCheckBox, "Use the DNS server below instead of Netrix's own DNS (AioDNS)."), + (TUNTAPDNSLabel, "DNS server used when custom DNS is on."), + (TUNTAPDNSTextBox, "DNS server used when custom DNS is on."), + (ProxyDNSCheckBox, "Send the custom DNS lookups through the proxy."), + (GlobalBypassIPsButton, "IP addresses and ranges that never go through the proxy in any TUN mode, e.g. 192.168.1.0/24."), + // V2Ray + (XrayConeCheckBox, "Full cone NAT for UDP (better for games). The server must run Xray-core 1.3.0 or newer."), + (TLSAllowInsecureCheckBox, "Accept invalid or self-signed TLS certificates. Less safe: only turn on if you trust the server."), + (UseMuxCheckBox, "Share one connection for many requests. Starts connections faster, but can lower single-download speed."), + (TCPFastOpenBox, "Send data with the TCP handshake to save a round trip. Needs support on both ends."), + (KCPGroupBox, "Advanced mKCP transport options. Leave as they are unless your server tells you otherwise."), + // Others + (ExitWhenClosedCheckBox, "Closing the window quits Netrix. Off = it keeps running in the tray."), + (StopWhenExitedCheckBox, "Stop the proxy when Netrix quits."), + (StartWhenOpenedCheckBox, "Start the proxy automatically when Netrix opens, using the selected server and mode."), + (MinimizeWhenStartedCheckBox, "Hide the window to the tray after the proxy starts."), + (RunAtStartupCheckBox, "Start Netrix when you sign in to Windows."), + (CheckUpdateWhenOpenedCheckBox, "Look for a new version each time Netrix opens."), + (NoSupportDialogCheckBox, "Hide the support warning dialog."), + (CheckBetaUpdateCheckBox, "Also offer pre-release versions when checking for updates."), + (UpdateServersWhenOpenedCheckBox, "Refresh your subscriptions each time Netrix opens."), + // AioDNS + (ChinaDNSLabel, "DNS server for domestic (China) lookups. Format: tcp://223.5.5.5:53 or tls://host:853."), + (ChinaDNSTextBox, "DNS server for domestic (China) lookups. Format: tcp://223.5.5.5:53 or tls://host:853."), + (OtherDNSLabel, "DNS server for all other lookups. Format: tcp://1.1.1.1:53 or tls://host:853."), + (OtherDNSTextBox, "DNS server for all other lookups. Format: tcp://1.1.1.1:53 or tls://host:853."), + (AioDNSListenPortLabel, "Local port of Netrix's own DNS service. Change only if 53 or this port is taken."), + (AioDNSListenPortTextBox, "Local port of Netrix's own DNS service. Change only if this port is taken."), + // Save + (ControlButton, "Save the settings (Enter).")); #region General @@ -277,7 +345,7 @@ private async void ControlButton_Click(object sender, EventArgs e) #endregion - Utils.Utils.RegisterNetchStartupItem(); + Utils.Utils.RegisterNetrixStartupItem(); await Configuration.SaveAsync(); MessageBoxX.Show(i18N.Translate("Saved")); diff --git a/Netch/Forms/SettingForm.resx b/Netrix/Forms/SettingForm.resx similarity index 100% rename from Netch/Forms/SettingForm.resx rename to Netrix/Forms/SettingForm.resx diff --git a/Netch/Forms/SubscriptionForm.Designer.cs b/Netrix/Forms/SubscriptionForm.Designer.cs similarity index 98% rename from Netch/Forms/SubscriptionForm.Designer.cs rename to Netrix/Forms/SubscriptionForm.Designer.cs index a18e91a..53d131d 100644 --- a/Netch/Forms/SubscriptionForm.Designer.cs +++ b/Netrix/Forms/SubscriptionForm.Designer.cs @@ -1,4 +1,4 @@ -namespace Netch.Forms +namespace Netrix.Forms { partial class SubscriptionForm { @@ -233,7 +233,7 @@ private void InitializeComponent() this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi; this.ClientSize = new System.Drawing.Size(684, 391); this.Controls.Add(this.MainTableLayoutPanel); - this.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point); + this.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point); this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle; this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4); this.MaximizeBox = false; diff --git a/Netch/Forms/SubscriptionForm.cs b/Netrix/Forms/SubscriptionForm.cs similarity index 84% rename from Netch/Forms/SubscriptionForm.cs rename to Netrix/Forms/SubscriptionForm.cs index 97bb72e..ab923ad 100644 --- a/Netch/Forms/SubscriptionForm.cs +++ b/Netrix/Forms/SubscriptionForm.cs @@ -1,8 +1,8 @@ -using Netch.Models; -using Netch.Properties; -using Netch.Utils; +using Netrix.Models; +using Netrix.Properties; +using Netrix.Utils; -namespace Netch.Forms; +namespace Netrix.Forms; [Fody.ConfigureAwait(true)] public partial class SubscriptionForm : Form @@ -10,6 +10,17 @@ public partial class SubscriptionForm : Form public SubscriptionForm() { InitializeComponent(); + + Tips.Create(this, + (RemarkLabel, "A name you choose for this subscription."), + (RemarkTextBox, "A name you choose for this subscription."), + (LinkLabel, "The subscription URL from your provider. Netrix downloads the server list from it."), + (LinkTextBox, "The subscription URL from your provider. Netrix downloads the server list from it."), + (UserAgentLabel, "Name Netrix sends when downloading. Leave empty unless your provider asks for one."), + (UserAgentTextBox, "Name Netrix sends when downloading. Leave empty unless your provider asks for one."), + (AddButton, "Add this subscription. Then use Subscription > Update Servers in the main menu to download its servers."), + (UnselectButton, "Clear the selection."), + (SubscriptionLinkListView, "Your subscriptions. Tick the ones to update. Right-click for more.")); Icon = Resources.icon; i18N.TranslateForm(this); @@ -39,7 +50,7 @@ private void SubscriptionLinkListView_MouseUp(object sender, MouseEventArgs e) } /// - /// 选中/取消选中 + /// Select / unselect /// private void SubscriptionLinkListView_SelectedIndexChanged(object sender, EventArgs e) { @@ -47,7 +58,7 @@ private void SubscriptionLinkListView_SelectedIndexChanged(object sender, EventA } /// - /// 订阅启/禁用 + /// Enable / disable a subscription /// private void SubscriptionLinkListView_ItemChecked(object sender, ItemCheckedEventArgs e) { diff --git a/Netch/Forms/SubscriptionForm.resx b/Netrix/Forms/SubscriptionForm.resx similarity index 100% rename from Netch/Forms/SubscriptionForm.resx rename to Netrix/Forms/SubscriptionForm.resx diff --git a/Netch/Forms/SyncGlobalCheckBox.cs b/Netrix/Forms/SyncGlobalCheckBox.cs similarity index 80% rename from Netch/Forms/SyncGlobalCheckBox.cs rename to Netrix/Forms/SyncGlobalCheckBox.cs index 39d09a2..4d92108 100644 --- a/Netch/Forms/SyncGlobalCheckBox.cs +++ b/Netrix/Forms/SyncGlobalCheckBox.cs @@ -1,4 +1,4 @@ -namespace Netch.Forms; +namespace Netrix.Forms; public class SyncGlobalCheckBox : CheckBox { @@ -12,6 +12,7 @@ public SyncGlobalCheckBox() private bool _globalValue; + [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)] public bool SyncGlobal { get => _syncGlobal; @@ -26,6 +27,7 @@ public bool SyncGlobal } } + [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)] public bool GlobalValue { get => _globalValue; @@ -54,6 +56,7 @@ protected override void OnClick(EventArgs e) base.OnClick(e); } + [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)] public bool? Value { get => _syncGlobal ? null : Checked; diff --git a/Netrix/Forms/Tips.cs b/Netrix/Forms/Tips.cs new file mode 100644 index 0000000..fc8d3ad --- /dev/null +++ b/Netrix/Forms/Tips.cs @@ -0,0 +1,27 @@ +namespace Netrix.Forms; + +/// +/// Hover help for controls. Texts are plain English and go through . +/// +internal static class Tips +{ + public static ToolTip Create(Form form, params (Control Control, string Text)[] tips) + { + var tip = new ToolTip { AutoPopDelay = 25000, InitialDelay = 400, ReshowDelay = 200 }; + form.Disposed += (_, _) => tip.Dispose(); + + foreach (var (control, text) in tips) + tip.SetToolTip(control, Utils.i18N.Translate(text)); + + return tip; + } + + /// + /// Status bar and tool strip items are not controls, they carry their own tooltip. + /// + public static void Set(string text, params ToolStripItem[] items) + { + foreach (var item in items) + item.ToolTipText = Utils.i18N.Translate(text); + } +} diff --git a/Netch/Global.cs b/Netrix/Global.cs similarity index 66% rename from Netch/Global.cs rename to Netrix/Global.cs index e765ef1..833d8f7 100644 --- a/Netch/Global.cs +++ b/Netrix/Global.cs @@ -1,43 +1,43 @@ using System.Text.Encodings.Web; using System.Text.Json; using System.Text.Json.Serialization; -using Netch.Forms; -using Netch.Models; -using Netch.Models.Modes; +using Netrix.Forms; +using Netrix.Models; +using Netrix.Models.Modes; using WindowsJobAPI; -namespace Netch; +namespace Netrix; public static class Global { /// - /// 主窗体的静态实例 + /// Static instance of the main form /// private static readonly Lazy LazyMainForm = new(() => new MainForm()); /// - /// 用于读取和写入的配置 + /// Settings for reading and writing /// public static Setting Settings = new(); public static readonly JobObject Job = new(); /// - /// 用于存储模式 + /// Storage for modes /// public static readonly List Modes = new(); - public static readonly string NetchDir; - public static readonly string NetchExecutable; + public static readonly string NetrixDir; + public static readonly string NetrixExecutable; static Global() { - NetchExecutable = Application.ExecutablePath; - NetchDir = Application.StartupPath; + NetrixExecutable = Application.ExecutablePath; + NetrixDir = Application.StartupPath; } /// - /// 主窗体的静态实例 + /// Static instance of the main form /// public static MainForm MainForm => LazyMainForm.Value; diff --git a/Netch/Interfaces/IController.cs b/Netrix/Interfaces/IController.cs similarity index 74% rename from Netch/Interfaces/IController.cs rename to Netrix/Interfaces/IController.cs index 3324c48..40f4db9 100644 --- a/Netch/Interfaces/IController.cs +++ b/Netrix/Interfaces/IController.cs @@ -1,4 +1,4 @@ -namespace Netch.Interfaces; +namespace Netrix.Interfaces; public interface IController { diff --git a/Netch/Interfaces/IModeController.cs b/Netrix/Interfaces/IModeController.cs similarity index 66% rename from Netch/Interfaces/IModeController.cs rename to Netrix/Interfaces/IModeController.cs index 02694bd..1b9e8f6 100644 --- a/Netch/Interfaces/IModeController.cs +++ b/Netrix/Interfaces/IModeController.cs @@ -1,7 +1,7 @@ -using Netch.Models.Modes; -using Netch.Servers; +using Netrix.Models.Modes; +using Netrix.Servers; -namespace Netch.Interfaces; +namespace Netrix.Interfaces; public interface IModeController : IController { diff --git a/Netch/Interfaces/IServerController.cs b/Netrix/Interfaces/IServerController.cs similarity index 88% rename from Netch/Interfaces/IServerController.cs rename to Netrix/Interfaces/IServerController.cs index 6c0c866..408bbb2 100644 --- a/Netch/Interfaces/IServerController.cs +++ b/Netrix/Interfaces/IServerController.cs @@ -1,7 +1,7 @@ -using Netch.Models; -using Netch.Servers; +using Netrix.Models; +using Netrix.Servers; -namespace Netch.Interfaces; +namespace Netrix.Interfaces; public interface IServerController : IController { diff --git a/Netch/Interfaces/IServerUtil.cs b/Netrix/Interfaces/IServerUtil.cs similarity index 93% rename from Netch/Interfaces/IServerUtil.cs rename to Netrix/Interfaces/IServerUtil.cs index 5c5ba53..796e833 100644 --- a/Netch/Interfaces/IServerUtil.cs +++ b/Netrix/Interfaces/IServerUtil.cs @@ -1,6 +1,6 @@ -using Netch.Models; +using Netrix.Models; -namespace Netch.Interfaces; +namespace Netrix.Interfaces; public interface IServerUtil { diff --git a/Netch/Interops/AioDNS.cs b/Netrix/Interops/AioDNS.cs similarity index 97% rename from Netch/Interops/AioDNS.cs rename to Netrix/Interops/AioDNS.cs index 5c08a9f..9850c05 100644 --- a/Netch/Interops/AioDNS.cs +++ b/Netrix/Interops/AioDNS.cs @@ -1,7 +1,7 @@ using System.Runtime.InteropServices; using System.Text; -namespace Netch.Interops; +namespace Netrix.Interops; public static class AioDNS { diff --git a/Netch/Interops/Redirector.cs b/Netrix/Interops/Redirector.cs similarity index 98% rename from Netch/Interops/Redirector.cs rename to Netrix/Interops/Redirector.cs index 21cd3e6..fd39745 100644 --- a/Netch/Interops/Redirector.cs +++ b/Netrix/Interops/Redirector.cs @@ -1,6 +1,6 @@ using System.Runtime.InteropServices; -namespace Netch.Interops; +namespace Netrix.Interops; public static class Redirector { diff --git a/Netch/Interops/RouteHelper.cs b/Netrix/Interops/RouteHelper.cs similarity index 89% rename from Netch/Interops/RouteHelper.cs rename to Netrix/Interops/RouteHelper.cs index f8d5fa4..b2fd501 100644 --- a/Netch/Interops/RouteHelper.cs +++ b/Netrix/Interops/RouteHelper.cs @@ -5,7 +5,7 @@ using Windows.Win32.NetworkManagement.IpHelper; using static Windows.Win32.PInvoke; -namespace Netch.Interops; +namespace Netrix.Interops; public static unsafe class RouteHelper { @@ -28,13 +28,13 @@ public static bool CreateUnicastIPCS(AddressFamily inet, string address, byte ci if (inet == AddressFamily.InterNetwork) { - addr.Address.Ipv4.sin_family = (ushort)ADDRESS_FAMILY.AF_INET; + addr.Address.Ipv4.sin_family = ADDRESS_FAMILY.AF_INET; if (inet_pton((int)inet, address, &addr.Address.Ipv4.sin_addr) == 0) return false; } else if (inet == AddressFamily.InterNetworkV6) { - addr.Address.Ipv6.sin6_family = (ushort)ADDRESS_FAMILY.AF_INET6; + addr.Address.Ipv6.sin6_family = ADDRESS_FAMILY.AF_INET6; if (inet_pton((int)inet, address, &addr.Address.Ipv6.sin6_addr) == 0) return false; } @@ -52,10 +52,10 @@ void Callback(void* context, MIB_UNICASTIPADDRESS_ROW* row, MIB_NOTIFICATION_TYP { if (type != MIB_NOTIFICATION_TYPE.MibInitialNotification) { - NTSTATUS state; + WIN32_ERROR state; if ((state = GetUnicastIpAddressEntry(row)) != 0) { - Log.Error("GetUnicastIpAddressEntry failed: {State}", state.Value); + Log.Error("GetUnicastIpAddressEntry failed: {State}", (uint)state); return; } @@ -74,14 +74,14 @@ void Callback(void* context, MIB_UNICASTIPADDRESS_ROW* row, MIB_NOTIFICATION_TYP } } - NotifyUnicastIpAddressChange((ushort)ADDRESS_FAMILY.AF_INET, Callback, null, new BOOLEAN(byte.MaxValue), ref handle); + NotifyUnicastIpAddressChange(ADDRESS_FAMILY.AF_INET, Callback, null, new BOOLEAN(byte.MaxValue), ref handle); try { - NTSTATUS state; + WIN32_ERROR state; if ((state = CreateUnicastIpAddressEntry(&addr)) != 0) { - Log.Error("CreateUnicastIpAddressEntry failed: {State}", state.Value); + Log.Error("CreateUnicastIpAddressEntry failed: {State}", (uint)state); return false; } diff --git a/Netch/Interops/tun2socks.cs b/Netrix/Interops/tun2socks.cs similarity index 92% rename from Netch/Interops/tun2socks.cs rename to Netrix/Interops/tun2socks.cs index 4d15a52..2765e69 100644 --- a/Netch/Interops/tun2socks.cs +++ b/Netrix/Interops/tun2socks.cs @@ -3,7 +3,7 @@ using System.Threading.Tasks; using Serilog; -namespace Netch.Interops +namespace Netrix.Interops { public static class tun2socks { @@ -32,7 +32,8 @@ public enum NameList TYPE_UDPPROT, TYPE_UDPPRPA, TYPE_UDPOBFS, - TYPE_UDPOBPA + TYPE_UDPOBPA, + TYPE_BLOCKIPV6 } public static bool Dial(NameList name, string value) @@ -67,9 +68,9 @@ public static async Task FreeAsync() public static extern ulong tun_luid(); [DllImport(tun2socks_bin, CallingConvention = CallingConvention.Cdecl)] - private static extern ulong tun_getUP(); + public static extern ulong tun_getUP(); [DllImport(tun2socks_bin, CallingConvention = CallingConvention.Cdecl)] - private static extern ulong tun_getDL(); + public static extern ulong tun_getDL(); } } \ No newline at end of file diff --git a/Netch/JsonConverter/ModeConverterWithTypeDiscriminator.cs b/Netrix/JsonConverter/ModeConverterWithTypeDiscriminator.cs similarity index 84% rename from Netch/JsonConverter/ModeConverterWithTypeDiscriminator.cs rename to Netrix/JsonConverter/ModeConverterWithTypeDiscriminator.cs index e5535fa..2c7f7ac 100644 --- a/Netch/JsonConverter/ModeConverterWithTypeDiscriminator.cs +++ b/Netrix/JsonConverter/ModeConverterWithTypeDiscriminator.cs @@ -1,11 +1,12 @@ using System.Text.Json; using System.Text.Json.Serialization; -using Netch.Models.Modes; -using Netch.Models.Modes.ProcessMode; -using Netch.Models.Modes.ShareMode; -using Netch.Models.Modes.TunMode; +using Netrix.Models.Modes; +using Netrix.Models.Modes.ProcessMode; +using Netrix.Models.Modes.ShareMode; +using Netrix.Models.Modes.TunMode; +using Netrix.Models.Modes.WebMode; -namespace Netch.JsonConverter; +namespace Netrix.JsonConverter; public class ModeConverterWithTypeDiscriminator : JsonConverter { @@ -29,6 +30,7 @@ public class ModeConverterWithTypeDiscriminator : JsonConverter ModeType.ProcessMode => typeof(Redirector), ModeType.TunMode => typeof(TunMode), ModeType.ShareMode => typeof(ShareMode), + ModeType.WebMode => typeof(WebMode), _ => throw new ArgumentOutOfRangeException() }; diff --git a/Netch/JsonConverter/ServerConverterWithTypeDiscriminator.cs b/Netrix/JsonConverter/ServerConverterWithTypeDiscriminator.cs similarity index 90% rename from Netch/JsonConverter/ServerConverterWithTypeDiscriminator.cs rename to Netrix/JsonConverter/ServerConverterWithTypeDiscriminator.cs index ac99cad..ab84383 100644 --- a/Netch/JsonConverter/ServerConverterWithTypeDiscriminator.cs +++ b/Netrix/JsonConverter/ServerConverterWithTypeDiscriminator.cs @@ -1,9 +1,9 @@ using System.Text.Json; using System.Text.Json.Serialization; -using Netch.Models; -using Netch.Utils; +using Netrix.Models; +using Netrix.Utils; -namespace Netch.JsonConverter; +namespace Netrix.JsonConverter; public class ServerConverterWithTypeDiscriminator : JsonConverter { diff --git a/Netch/Models/Arguments.cs b/Netrix/Models/Arguments.cs similarity index 96% rename from Netch/Models/Arguments.cs rename to Netrix/Models/Arguments.cs index d9f7f51..076d66a 100644 --- a/Netch/Models/Arguments.cs +++ b/Netrix/Models/Arguments.cs @@ -1,6 +1,6 @@ -using Netch.Utils; +using Netrix.Utils; -namespace Netch.Models; +namespace Netrix.Models; public static class Arguments { diff --git a/Netch/Models/GitHubRelease/Asset.cs b/Netrix/Models/GitHubRelease/Asset.cs similarity index 93% rename from Netch/Models/GitHubRelease/Asset.cs rename to Netrix/Models/GitHubRelease/Asset.cs index e0610c3..956a6ef 100644 --- a/Netch/Models/GitHubRelease/Asset.cs +++ b/Netrix/Models/GitHubRelease/Asset.cs @@ -1,5 +1,5 @@ #nullable disable -namespace Netch.Models.GitHubRelease; +namespace Netrix.Models.GitHubRelease; public class Asset { diff --git a/Netch/Models/GitHubRelease/GitHubRelease.cs b/Netrix/Models/GitHubRelease/GitHubRelease.cs similarity index 88% rename from Netch/Models/GitHubRelease/GitHubRelease.cs rename to Netrix/Models/GitHubRelease/GitHubRelease.cs index 26ecc1e..cb7e9ed 100644 --- a/Netch/Models/GitHubRelease/GitHubRelease.cs +++ b/Netrix/Models/GitHubRelease/GitHubRelease.cs @@ -1,4 +1,4 @@ -namespace Netch.Models.GitHubRelease; +namespace Netrix.Models.GitHubRelease; public class GitHubRelease { diff --git a/Netch/Models/GitHubRelease/GitHubUser.cs b/Netrix/Models/GitHubRelease/GitHubUser.cs similarity index 95% rename from Netch/Models/GitHubRelease/GitHubUser.cs rename to Netrix/Models/GitHubRelease/GitHubUser.cs index 3bc71b0..3a86d75 100644 --- a/Netch/Models/GitHubRelease/GitHubUser.cs +++ b/Netrix/Models/GitHubRelease/GitHubUser.cs @@ -1,5 +1,5 @@ #nullable disable -namespace Netch.Models.GitHubRelease; +namespace Netrix.Models.GitHubRelease; public class GitHubUser { diff --git a/Netch/Models/GitHubRelease/Release.cs b/Netrix/Models/GitHubRelease/Release.cs similarity index 95% rename from Netch/Models/GitHubRelease/Release.cs rename to Netrix/Models/GitHubRelease/Release.cs index 1de6c66..710f1a8 100644 --- a/Netch/Models/GitHubRelease/Release.cs +++ b/Netrix/Models/GitHubRelease/Release.cs @@ -1,5 +1,5 @@ #nullable disable -namespace Netch.Models.GitHubRelease; +namespace Netrix.Models.GitHubRelease; public class Release { diff --git a/Netch/Models/GitHubRelease/SuffixVersion.cs b/Netrix/Models/GitHubRelease/SuffixVersion.cs similarity index 95% rename from Netch/Models/GitHubRelease/SuffixVersion.cs rename to Netrix/Models/GitHubRelease/SuffixVersion.cs index 3a36470..37085bb 100644 --- a/Netch/Models/GitHubRelease/SuffixVersion.cs +++ b/Netrix/Models/GitHubRelease/SuffixVersion.cs @@ -1,6 +1,6 @@ using System.Text.RegularExpressions; -namespace Netch.Models.GitHubRelease; +namespace Netrix.Models.GitHubRelease; [Serializable] public struct SuffixVersion : IComparable, IComparable @@ -30,6 +30,9 @@ public static SuffixVersion Parse(string? value) if (value == null) throw new ArgumentNullException(nameof(value)); + // tags are often written "v2.0.0" + value = value.TrimStart('v', 'V'); + var strings = value.Split('-'); var version = Version.Parse(strings[0]); diff --git a/Netch/Models/GitHubRelease/VersionUtil.cs b/Netrix/Models/GitHubRelease/VersionUtil.cs similarity index 95% rename from Netch/Models/GitHubRelease/VersionUtil.cs rename to Netrix/Models/GitHubRelease/VersionUtil.cs index 34ee482..b9ce5b5 100644 --- a/Netch/Models/GitHubRelease/VersionUtil.cs +++ b/Netrix/Models/GitHubRelease/VersionUtil.cs @@ -1,4 +1,4 @@ -namespace Netch.Models.GitHubRelease; +namespace Netrix.Models.GitHubRelease; public static class VersionUtil { diff --git a/Netch/Models/MessageException.cs b/Netrix/Models/MessageException.cs similarity index 86% rename from Netch/Models/MessageException.cs rename to Netrix/Models/MessageException.cs index ac20a30..84444f4 100644 --- a/Netch/Models/MessageException.cs +++ b/Netrix/Models/MessageException.cs @@ -1,4 +1,4 @@ -namespace Netch.Models; +namespace Netrix.Models; public class MessageException : Exception { diff --git a/Netch/Models/Modes/Mode.cs b/Netrix/Models/Modes/Mode.cs similarity index 93% rename from Netch/Models/Modes/Mode.cs rename to Netrix/Models/Modes/Mode.cs index aeecbdc..0866164 100644 --- a/Netch/Models/Modes/Mode.cs +++ b/Netrix/Models/Modes/Mode.cs @@ -1,7 +1,7 @@ using System.Text.Json.Serialization; -using Netch.Utils; +using Netrix.Utils; -namespace Netch.Models.Modes; +namespace Netrix.Models.Modes; public abstract class Mode { diff --git a/Netch/Models/Modes/ModeFeature.cs b/Netrix/Models/Modes/ModeFeature.cs similarity index 80% rename from Netch/Models/Modes/ModeFeature.cs rename to Netrix/Models/Modes/ModeFeature.cs index 2a00c5c..0db83a9 100644 --- a/Netch/Models/Modes/ModeFeature.cs +++ b/Netrix/Models/Modes/ModeFeature.cs @@ -1,4 +1,4 @@ -namespace Netch.Models.Modes; +namespace Netrix.Models.Modes; [Flags] public enum ModeFeature diff --git a/Netrix/Models/Modes/ModeType.cs b/Netrix/Models/Modes/ModeType.cs new file mode 100644 index 0000000..ad252cc --- /dev/null +++ b/Netrix/Models/Modes/ModeType.cs @@ -0,0 +1,25 @@ +namespace Netrix.Models.Modes; + +public enum ModeType +{ + /// + /// Process proxy + /// + ProcessMode, + + /// + /// Network sharing + /// + ShareMode, + + /// + /// Adapter proxy + /// + TunMode, + + /// + /// System proxy + /// + // appended last: enum values are persisted in mode files + WebMode +} \ No newline at end of file diff --git a/Netch/Models/Modes/ProcessMode/ProcessMode.cs b/Netrix/Models/Modes/ProcessMode/ProcessMode.cs similarity index 94% rename from Netch/Models/Modes/ProcessMode/ProcessMode.cs rename to Netrix/Models/Modes/ProcessMode/ProcessMode.cs index 2ac0e14..e8a9800 100644 --- a/Netch/Models/Modes/ProcessMode/ProcessMode.cs +++ b/Netrix/Models/Modes/ProcessMode/ProcessMode.cs @@ -1,4 +1,4 @@ -namespace Netch.Models.Modes.ProcessMode; +namespace Netrix.Models.Modes.ProcessMode; public class Redirector : Mode { diff --git a/Netrix/Models/Modes/ShareMode/ShareMode.cs b/Netrix/Models/Modes/ShareMode/ShareMode.cs new file mode 100644 index 0000000..dcf4d69 --- /dev/null +++ b/Netrix/Models/Modes/ShareMode/ShareMode.cs @@ -0,0 +1,8 @@ +namespace Netrix.Models.Modes.ShareMode; + +public class ShareMode : Mode +{ + public override ModeType Type => ModeType.ShareMode; + + public string Argument { get; set; } = "--preset uu"; +} \ No newline at end of file diff --git a/Netch/Models/Modes/TunMode/TunMode.cs b/Netrix/Models/Modes/TunMode/TunMode.cs similarity index 82% rename from Netch/Models/Modes/TunMode/TunMode.cs rename to Netrix/Models/Modes/TunMode/TunMode.cs index 6a6e7ee..8568671 100644 --- a/Netch/Models/Modes/TunMode/TunMode.cs +++ b/Netrix/Models/Modes/TunMode/TunMode.cs @@ -1,4 +1,4 @@ -namespace Netch.Models.Modes.TunMode; +namespace Netrix.Models.Modes.TunMode; public class TunMode : Mode { diff --git a/Netrix/Models/Modes/WebMode/WebMode.cs b/Netrix/Models/Modes/WebMode/WebMode.cs new file mode 100644 index 0000000..c20840e --- /dev/null +++ b/Netrix/Models/Modes/WebMode/WebMode.cs @@ -0,0 +1,11 @@ +namespace Netrix.Models.Modes.WebMode; + +public class WebMode : Mode +{ + public override ModeType Type => ModeType.WebMode; + + /// + /// Windows "ProxyOverride" list, semicolon separated + /// + public string Bypass { get; set; } = ""; +} diff --git a/Netch/Models/NatTypeTestResult.cs b/Netrix/Models/NatTypeTestResult.cs similarity index 81% rename from Netch/Models/NatTypeTestResult.cs rename to Netrix/Models/NatTypeTestResult.cs index 195b239..453448b 100644 --- a/Netch/Models/NatTypeTestResult.cs +++ b/Netrix/Models/NatTypeTestResult.cs @@ -1,4 +1,4 @@ -namespace Netch.Models; +namespace Netrix.Models; public struct NatTypeTestResult { diff --git a/Netch/Models/NetRoute.cs b/Netrix/Models/NetRoute.cs similarity index 92% rename from Netch/Models/NetRoute.cs rename to Netrix/Models/NetRoute.cs index af5e647..9d202ed 100644 --- a/Netch/Models/NetRoute.cs +++ b/Netrix/Models/NetRoute.cs @@ -1,7 +1,7 @@ using System.Net; using Windows.Win32; -namespace Netch.Models; +namespace Netrix.Models; public struct NetRoute { @@ -18,7 +18,7 @@ public static NetRoute TemplateBuilder(string gateway, int interfaceIndex, int m public static NetRoute GetBestRouteTemplate() { if (PInvoke.GetBestRoute(BitConverter.ToUInt32(IPAddress.Parse("114.114.114.114").GetAddressBytes(), 0), 0, out var route) != 0) - throw new MessageException("GetBestRoute 搜索失败"); + throw new MessageException("GetBestRoute found no route"); var gateway = new IPAddress(route.dwForwardNextHop); return TemplateBuilder(gateway.ToString(), (int)route.dwForwardIfIndex); diff --git a/Netch/Models/NumberRange.cs b/Netrix/Models/NumberRange.cs similarity index 91% rename from Netch/Models/NumberRange.cs rename to Netrix/Models/NumberRange.cs index 6058f23..d87e6d4 100644 --- a/Netch/Models/NumberRange.cs +++ b/Netrix/Models/NumberRange.cs @@ -1,4 +1,4 @@ -namespace Netch.Models; +namespace Netrix.Models; public readonly struct NumberRange { diff --git a/Netch/Models/Profile.cs b/Netrix/Models/Profile.cs similarity index 91% rename from Netch/Models/Profile.cs rename to Netrix/Models/Profile.cs index 9f4153a..18c4af1 100644 --- a/Netch/Models/Profile.cs +++ b/Netrix/Models/Profile.cs @@ -1,6 +1,6 @@ -using Netch.Models.Modes; +using Netrix.Models.Modes; -namespace Netch.Models; +namespace Netrix.Models; public class Profile { diff --git a/Netch/Models/Server.cs b/Netrix/Models/Server.cs similarity index 89% rename from Netch/Models/Server.cs rename to Netrix/Models/Server.cs index 5ff53de..a13d69a 100644 --- a/Netch/Models/Server.cs +++ b/Netrix/Models/Server.cs @@ -1,44 +1,44 @@ using System.Net.Sockets; using System.Text.Json.Serialization; -using Netch.Utils; +using Netrix.Utils; -namespace Netch.Models; +namespace Netrix.Models; public abstract class Server : ICloneable { /// - /// 延迟 + /// Delay /// [JsonIgnore] public int Delay { get; private set; } = -1; /// - /// 组 + /// Group /// public string Group { get; set; } = Constants.DefaultGroup; /// - /// 地址 + /// Address /// public string Hostname { get; set; } = string.Empty; /// - /// 端口 + /// Port /// public ushort Port { get; set; } /// - /// 倍率 + /// Rate multiplier /// public double Rate { get; } = 1.0; /// - /// 备注 + /// Remark /// public string Remark { get; set; } = ""; /// - /// 代理类型 + /// Proxy type /// [JsonPropertyOrder(int.MinValue)] public abstract string Type { get; } @@ -49,9 +49,9 @@ public object Clone() } /// - /// 获取备注 + /// Get the remark /// - /// 备注 + /// Remark public override string ToString() { var remark = string.IsNullOrWhiteSpace(Remark) ? $"{Hostname}:{Port}" : Remark; @@ -64,9 +64,9 @@ public override string ToString() public abstract string MaskedData(); /// - /// 测试延迟 + /// Test the delay /// - /// 延迟 + /// Delay public async Task PingAsync() { try diff --git a/Netch/Models/Settings/AioDNSConfig.cs b/Netrix/Models/Settings/AioDNSConfig.cs similarity index 92% rename from Netch/Models/Settings/AioDNSConfig.cs rename to Netrix/Models/Settings/AioDNSConfig.cs index 4e3ecb4..f398de9 100644 --- a/Netch/Models/Settings/AioDNSConfig.cs +++ b/Netrix/Models/Settings/AioDNSConfig.cs @@ -1,6 +1,6 @@ using System.Text.Json.Serialization; -namespace Netch.Models; +namespace Netrix.Models; public class AioDNSConfig { diff --git a/Netch/Models/Settings/KcpConfig.cs b/Netrix/Models/Settings/KcpConfig.cs similarity index 92% rename from Netch/Models/Settings/KcpConfig.cs rename to Netrix/Models/Settings/KcpConfig.cs index 13bbb46..18251dc 100644 --- a/Netch/Models/Settings/KcpConfig.cs +++ b/Netrix/Models/Settings/KcpConfig.cs @@ -1,4 +1,4 @@ -namespace Netch.Models; +namespace Netrix.Models; public class KcpConfig { diff --git a/Netch/Models/Settings/RedirectorConfig.cs b/Netrix/Models/Settings/RedirectorConfig.cs similarity index 94% rename from Netch/Models/Settings/RedirectorConfig.cs rename to Netrix/Models/Settings/RedirectorConfig.cs index ba620e7..7c82294 100644 --- a/Netch/Models/Settings/RedirectorConfig.cs +++ b/Netrix/Models/Settings/RedirectorConfig.cs @@ -1,4 +1,4 @@ -namespace Netch.Models; +namespace Netrix.Models; public class RedirectorConfig { diff --git a/Netch/Models/Settings/Setting.cs b/Netrix/Models/Settings/Setting.cs similarity index 71% rename from Netch/Models/Settings/Setting.cs rename to Netrix/Models/Settings/Setting.cs index 8eadbf1..462a064 100644 --- a/Netch/Models/Settings/Setting.cs +++ b/Netrix/Models/Settings/Setting.cs @@ -1,143 +1,143 @@ using System.Text.Json; -namespace Netch.Models; +namespace Netrix.Models; /// -/// 用于读取和写入的配置的类 +/// Settings class for reading and writing /// public class Setting { public RedirectorConfig Redirector { get; set; } = new(); /// - /// 服务器列表 + /// Server list /// public List Server { get; set; } = new(); public AioDNSConfig AioDNS { get; set; } = new(); /// - /// 是否检查 Beta 更新 + /// Whether to check for beta updates /// public bool CheckBetaUpdate { get; set; } = false; /// - /// 是否打开软件时检查更新 + /// Whether to check for updates when the app opens /// public bool CheckUpdateWhenOpened { get; set; } = true; /// - /// 测试所有服务器心跳/秒 + /// Interval in seconds for testing all servers /// public int DetectionTick { get; set; } = 10; /// - /// 是否关闭窗口时退出 + /// Whether closing the window exits the app /// public bool ExitWhenClosed { get; set; } = false; /// - /// HTTP 本地端口 + /// HTTP local port /// public ushort HTTPLocalPort { get; set; } = 2802; /// - /// 语言设置 + /// Language setting /// public string Language { get; set; } = "System"; /// - /// HTTP 和 Socks5 本地代理地址 + /// Local address of the HTTP and SOCKS5 proxy /// public string LocalAddress { get; set; } = "127.0.0.1"; /// - /// 是否启动后自动最小化 + /// Whether to minimize after starting /// public bool MinimizeWhenStarted { get; set; } = false; /// - /// 模式选择位置 + /// Selected mode position /// public int ModeComboBoxSelectedIndex { get; set; } = -1; /// - /// 快捷配置数量 + /// Number of quick-start profiles /// public int ProfileCount { get; set; } = 4; /// - /// 已保存的快捷配置 + /// Saved quick-start profiles /// public List Profiles { get; set; } = new(); /// - /// 配置最大列数 + /// Maximum number of profile columns /// public byte ProfileTableColumnCount { get; set; } = 5; /// - /// 网页请求超时 毫秒 + /// Web request timeout in milliseconds /// public int RequestTimeout { get; set; } = 10000; /// - /// 是否开机启动软件 + /// Whether to start the app with Windows /// public bool RunAtStartup { get; set; } = false; /// - /// 服务器选择位置 + /// Selected server position /// public int ServerComboBoxSelectedIndex { get; set; } = -1; /// - /// 服务器测试方式 false.ICMPing true.TCPing + /// Server test method: false = ICMPing, true = TCPing /// public bool ServerTCPing { get; set; } = true; /// - /// Socks5 本地端口 + /// SOCKS5 local port /// public ushort Socks5LocalPort { get; set; } = 2801; /// - /// 启动后延迟测试间隔/秒 + /// Delay test interval after starting, in seconds /// public int StartedPingInterval { get; set; } = -1; /// - /// 是否打开软件时启动加速 + /// Whether to start the proxy when the app opens /// public bool StartWhenOpened { get; set; } = false; /// - /// 是否退出时停止 + /// Whether to stop the proxy on exit /// public bool StopWhenExited { get; set; } = false; /// - /// STUN测试服务器 + /// STUN test server /// - public string STUN_Server { get; set; } = "stun.syncthing.net"; + public string STUN_Server { get; set; } = "stun.1und1.de"; /// - /// STUN测试服务器 + /// STUN test server port /// public int STUN_Server_Port { get; set; } = 3478; /// - /// 订阅链接列表 + /// Subscription link list /// public List Subscription { get; set; } = new(); /// - /// TUNTAP 适配器配置 + /// TUNTAP adapter settings /// public TUNConfig TUNTAP { get; set; } = new(); /// - /// 是否打开软件时更新订阅 + /// Whether to update subscriptions when the app opens /// public bool UpdateServersWhenOpened { get; set; } = false; diff --git a/Netch/Models/Settings/TUNConfig.cs b/Netrix/Models/Settings/TUNConfig.cs similarity index 65% rename from Netch/Models/Settings/TUNConfig.cs rename to Netrix/Models/Settings/TUNConfig.cs index f57837f..a7d5255 100644 --- a/Netch/Models/Settings/TUNConfig.cs +++ b/Netrix/Models/Settings/TUNConfig.cs @@ -1,12 +1,12 @@ -namespace Netch.Models; +namespace Netrix.Models; /// -/// TUN/TAP 适配器配置类 +/// TUN/TAP adapter settings /// public class TUNConfig { /// - /// 地址 + /// Address /// public string Address { get; set; } = "10.0.236.10"; @@ -16,25 +16,30 @@ public class TUNConfig public string DNS { get; set; } = Constants.DefaultPrimaryDNS; /// - /// 网关 + /// Gateway /// public string Gateway { get; set; } = "10.0.236.1"; /// - /// 掩码 + /// Netmask /// public string Netmask { get; set; } = "255.255.255.0"; /// - /// 模式 2 下是否代理 DNS + /// Whether DNS goes through the proxy in mode 2 /// public bool ProxyDNS { get; set; } = false; /// - /// 使用自定义 DNS 设置 + /// Use custom DNS settings /// public bool UseCustomDNS { get; set; } = false; + /// + /// Also send IPv6 traffic through the tunnel; otherwise IPv6 (YouTube, Google, ...) bypasses it + /// + public bool ProxyIPv6 { get; set; } = true; + /// /// Global bypass IPs /// diff --git a/Netch/Models/Settings/V2rayConfig.cs b/Netrix/Models/Settings/V2rayConfig.cs similarity index 92% rename from Netch/Models/Settings/V2rayConfig.cs rename to Netrix/Models/Settings/V2rayConfig.cs index 97d2cb5..01bdc29 100644 --- a/Netch/Models/Settings/V2rayConfig.cs +++ b/Netrix/Models/Settings/V2rayConfig.cs @@ -1,4 +1,4 @@ -namespace Netch.Models; +namespace Netrix.Models; public class V2rayConfig { diff --git a/Netch/Models/StatusText.cs b/Netrix/Models/StatusText.cs similarity index 96% rename from Netch/Models/StatusText.cs rename to Netrix/Models/StatusText.cs index fe7a32d..cef91b9 100644 --- a/Netch/Models/StatusText.cs +++ b/Netrix/Models/StatusText.cs @@ -1,6 +1,6 @@ -using Netch.Utils; +using Netrix.Utils; -namespace Netch.Models; +namespace Netrix.Models; public static class StatusPortInfoText { diff --git a/Netch/Models/Subscription.cs b/Netrix/Models/Subscription.cs similarity index 82% rename from Netch/Models/Subscription.cs rename to Netrix/Models/Subscription.cs index bb83a19..f474dda 100644 --- a/Netch/Models/Subscription.cs +++ b/Netrix/Models/Subscription.cs @@ -1,19 +1,19 @@ -namespace Netch.Models; +namespace Netrix.Models; public class Subscription { /// - /// 启用状态 + /// Enabled /// public bool Enable { get; set; } = true; /// - /// 链接 + /// Link /// public string Link { get; set; } = string.Empty; /// - /// 备注 + /// Remark /// public string Remark { get; set; } = string.Empty; diff --git a/Netch/Models/TagItem.cs b/Netrix/Models/TagItem.cs similarity index 84% rename from Netch/Models/TagItem.cs rename to Netrix/Models/TagItem.cs index bd26a3f..050a4aa 100644 --- a/Netch/Models/TagItem.cs +++ b/Netrix/Models/TagItem.cs @@ -1,6 +1,6 @@ -using Netch.Utils; +using Netrix.Utils; -namespace Netch.Models; +namespace Netrix.Models; internal class TagItem { diff --git a/Netch/NOTICE.txt b/Netrix/NOTICE.txt similarity index 82% rename from Netch/NOTICE.txt rename to Netrix/NOTICE.txt index 51ae8b7..113a5e2 100644 --- a/Netch/NOTICE.txt +++ b/Netrix/NOTICE.txt @@ -1,8 +1,9 @@ This program comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it under certain conditions. -Copyright (c) 2019 AmazingDM and Contributors +Copyright (c) 2019 AmazingDM and Contributors (Netch) +Netrix is a modernised fork of Netch (GPLv3), the original project by AmazingDM and Contributors. -Libraries that have been used in Netch are listed below (Not in order): +Libraries that have been used in Netrix are listed below (Not in order): Copyright (c) .NET Foundation and Contributors(@dotnet): .NET (MIT) Copyright (c) Microsoft Corporation(@microsoft): CsWin32 (MIT) Copyright (c) Microsoft Corporation(@microsoft): Microsoft.VisualStudio.Threading (MIT) @@ -23,6 +24,9 @@ Copyright (c) 2018 WireGuard LLC.(@WireGuard): Wintun Network Adapter (GPL-3.0) Copyright (c) 2019 xᴊᴀsᴏɴʟʏᴜ(@xjasonlyu): tun2socks (GPL-3.0) Copyright (c) 2010 Miek Gieben(@miekg): dns (BSD) Copyright (c) 2020 Xie Zhihao(@zhxie): pcap2socks (MIT) +netifs (Apache-2.0, authored by Manuel Stocker per its Cargo.toml), vendored in Other/pcap2socks +Copyright (c) 2018 eycorsican: go-tun2socks core with lwIP (MIT), in Other/tun2socks +go-shadowsocks2 socks (Apache-2.0, github.com/shadowsocks/go-shadowsocks2), used by Other/tun2socks Copyright (c) MaxMind, Inc.: GeoLite2 Database (GeoLite2 EULA, CC BY-SA 4.0) Copyright (c) 2020 Project X Community(@XTLS): Xray-core (MPL-2.0) Copyright (c) 2020 Teddysun(@teddysun): v2ray-plugin (MIT) diff --git a/Netch/NativeMethods.cs b/Netrix/NativeMethods.cs similarity index 91% rename from Netch/NativeMethods.cs rename to Netrix/NativeMethods.cs index e66c253..3fa2fff 100644 --- a/Netch/NativeMethods.cs +++ b/Netrix/NativeMethods.cs @@ -1,6 +1,6 @@ using System.Runtime.InteropServices; -namespace Netch; +namespace Netrix; public static class NativeMethods { diff --git a/Netch/NativeMethods.txt b/Netrix/NativeMethods.txt similarity index 73% rename from Netch/NativeMethods.txt rename to Netrix/NativeMethods.txt index f5ef68c..4066ae2 100644 --- a/Netch/NativeMethods.txt +++ b/Netrix/NativeMethods.txt @@ -9,6 +9,9 @@ CreateUnicastIpAddressEntry GetUnicastIpAddressEntry NotifyUnicastIpAddressChange CancelMibChangeNotify2 +MIB_IPINTERFACE_ROW +GetIpInterfaceEntry +SetIpInterfaceEntry // User32.dll SetWindowPos @@ -24,5 +27,10 @@ GetConsoleWindow ntohs inet_pton +// WinINet.dll +InternetSetOption +INTERNET_OPTION_SETTINGS_CHANGED +INTERNET_OPTION_REFRESH + // Windows.h // WIN32_ERROR \ No newline at end of file diff --git a/Netch/Netch.csproj b/Netrix/Netrix.csproj similarity index 74% rename from Netch/Netch.csproj rename to Netrix/Netrix.csproj index 8e03a18..f5e18dc 100644 --- a/Netch/Netch.csproj +++ b/Netrix/Netrix.csproj @@ -1,102 +1,101 @@ - - - - - - WinExe - Debug;Release - true - enable - false - App.manifest - false - false - Resources\Netch.ico - false - - VSTHRD100 - true - Default - true - true - net6.0-windows - - - - bin\x64\Debug\ - DEBUG;TRACE - - - - bin\x64\Release\ - none - false - - - - - - - - - all - - - all - runtime; build; native; contentfiles; analyzers; buildtransitive - - - - - - - all - runtime; build; native; contentfiles; analyzers; buildtransitive - - - all - runtime; build; native; contentfiles; analyzers; buildtransitive - - - - - - - - - - - - - - - - - - ResXFileCodeGenerator - Resources.Designer.cs - - - True - True - Resources.resx - - - UserControl - - - - - - - PreserveNewest - - - - - - <_FilesToBundle Remove="$(PkgMicrosoft_Diagnostics_Tracing_TraceEvent)\build\native\x86\**" /> - - - - + + + + + + WinExe + Debug;Release + true + enable + false + App.manifest + false + false + Resources\Netrix.ico + false + + VSTHRD100 + true + Default + true + true + net10.0-windows + + + + bin\x64\Debug\ + DEBUG;TRACE + + + + bin\x64\Release\ + none + false + + + + + + + + + all + + + all + runtime; build; native; contentfiles; analyzers; buildtransitive + + + + + + + all + runtime; build; native; contentfiles; analyzers; buildtransitive + + + all + runtime; build; native; contentfiles; analyzers; buildtransitive + + + + + + + + + + + + + + + + + ResXFileCodeGenerator + Resources.Designer.cs + + + True + True + Resources.resx + + + UserControl + + + + + + + PreserveNewest + + + + + + <_FilesToBundle Remove="$(PkgMicrosoft_Diagnostics_Tracing_TraceEvent)\build\native\x86\**" /> + + + + diff --git a/Netch/Program.cs b/Netrix/Program.cs similarity index 76% rename from Netch/Program.cs rename to Netrix/Program.cs index 3feafdf..517ce80 100644 --- a/Netch/Program.cs +++ b/Netrix/Program.cs @@ -4,22 +4,25 @@ using Windows.Win32; using Windows.Win32.Foundation; using Microsoft.VisualStudio.Threading; -using Netch.Controllers; -using Netch.Enums; -using Netch.Forms; -using Netch.Services; -using Netch.Utils; +using Netrix.Controllers; +using Netrix.Enums; +using Netrix.Forms; +using Netrix.Services; +using Netrix.Utils; using Serilog.Events; using SingleInstance; #if RELEASE using Windows.Win32.UI.WindowsAndMessaging; #endif -namespace Netch; +namespace Netrix; public static class Program { - public static readonly ISingleInstanceService SingleInstance = new SingleInstanceService($"Global\\{nameof(Netch)}"); + // v7 names both the mutex and the named pipe with this, so no "Global\" prefix: one instance per Windows session + public static readonly SingleInstanceService SingleInstance = new(nameof(Netrix)); + + private const int ShowCommand = 1; internal static HWND ConsoleHwnd { get; private set; } @@ -35,10 +38,10 @@ public static void Main(string[] args) Flags.AlwaysShowNewVersionFound = true; // set working directory - Directory.SetCurrentDirectory(Global.NetchDir); + Directory.SetCurrentDirectory(Global.NetrixDir); // append .\bin to PATH - var binPath = Path.Combine(Global.NetchDir, "bin"); + var binPath = Path.Combine(Global.NetrixDir, "bin"); Environment.SetEnvironmentVariable("PATH", $"{Environment.GetEnvironmentVariable("PATH")};{binPath}"); #if !DEBUG @@ -51,7 +54,7 @@ public static void Main(string[] args) } #endif // clean up old files - Updater.CleanOld(Global.NetchDir); + Updater.CleanOld(Global.NetrixDir); // pre-create directories var directories = new[] { "mode\\Custom", "data", "i18n", "logging" }; @@ -63,14 +66,15 @@ public static void Main(string[] args) Configuration.LoadAsync().Wait(); // check if the program is already running - if (!SingleInstance.TryStartSingleInstance()) + if (!SingleInstance.IsFirstInstance) { - SingleInstance.SendMessageToFirstInstanceAsync(Constants.Parameter.Show).GetAwaiter().GetResult(); + SingleInstance.SendMessageAsync(ShowCommand).GetAwaiter().GetResult(); Environment.Exit(0); return; } - SingleInstance.Received.Subscribe(SingleInstance_ArgumentsReceived); + // only the first instance may do this, or it would undo a running WebMode + WebController.RecoverAfterCrash(); // clean up old logs if (Directory.Exists("logging")) @@ -92,7 +96,7 @@ public static void Main(string[] args) i18N.Load(Global.Settings.Language); // log environment information - LogEnvironmentAsync().Forget(); + LogEnvironment(); CheckClr(); CheckOS(); @@ -104,17 +108,25 @@ public static void Main(string[] args) Application.SetHighDpiMode(HighDpiMode.DpiUnawareGdiScaled); Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); + + // creating the form earlier would make SetCompatibleTextRenderingDefault throw + Global.MainForm.Shown += (_, _) => LogSlowEnvironmentAsync().Forget(); Application.Run(Global.MainForm); } #pragma warning restore VSTHRD002 - private static async Task LogEnvironmentAsync() + private static void LogEnvironment() { - Log.Information("Netch Version: {Version}", $"{UpdateChecker.Owner}/{UpdateChecker.Repo}@{UpdateChecker.Version}"); + Log.Information("Netrix Version: {Version}", $"{UpdateChecker.Owner}/{UpdateChecker.Repo}@{UpdateChecker.Version}"); Log.Information("OS: {OSVersion}", Environment.OSVersion); - Log.Information("SHA256: {Hash}", $"{await Utils.Utils.Sha256CheckSumAsync(Global.NetchExecutable)}"); Log.Information("System Language: {Language}", CultureInfo.CurrentCulture.Name); + } + + // hashing the whole exe (about 190 MB) and listing drivers and processes wait until the window is up + private static async Task LogSlowEnvironmentAsync() + { + Log.Information("SHA256: {Hash}", $"{await Utils.Utils.Sha256CheckSumAsync(Global.NetrixExecutable)}"); #if RELEASE if (Log.IsEnabled(LogEventLevel.Debug)) @@ -181,7 +193,7 @@ public static void CreateLogger() #else .MinimumLevel.Debug() #endif - .WriteTo.Async(c => c.File(Path.Combine(Global.NetchDir, Constants.LogFile), + .WriteTo.Async(c => c.File(Path.Combine(Global.NetrixDir, Constants.LogFile), outputTemplate: Constants.OutputTemplate, rollOnFileSizeLimit: false)) .WriteTo.Console(outputTemplate: Constants.OutputTemplate) @@ -200,14 +212,10 @@ private static void Application_OnExit(object? sender, EventArgs eventArgs) Log.CloseAndFlush(); } - private static void SingleInstance_ArgumentsReceived((string, Action) receive) + // called on the pipe thread and must complete synchronously: hand the work to the UI thread + internal static void SingleInstance_MessageReceived(int command) { - var (arg, endFunc) = receive; - if (arg == Constants.Parameter.Show) - { - Utils.Utils.ActivateVisibleWindows(); - } - - endFunc(string.Empty); + if (command == ShowCommand) + Global.MainForm.BeginInvoke(Utils.Utils.ActivateVisibleWindows); } } \ No newline at end of file diff --git a/Netrix/Properties/AssemblyInfo.cs b/Netrix/Properties/AssemblyInfo.cs new file mode 100644 index 0000000..c8544d6 --- /dev/null +++ b/Netrix/Properties/AssemblyInfo.cs @@ -0,0 +1,39 @@ +using System.Reflection; +using System.Runtime.InteropServices; +using Netrix.Controllers; + +// General information about an assembly is controlled through the following +// set of attributes. Change these attribute values to modify the information +// associated with an assembly. +[assembly: AssemblyTitle(UpdateChecker.Name)] +[assembly: AssemblyDescription("")] +[assembly: AssemblyConfiguration("")] +[assembly: AssemblyCompany("")] +[assembly: AssemblyProduct(UpdateChecker.Name)] +[assembly: AssemblyCopyright(UpdateChecker.Copyright)] +[assembly: AssemblyTrademark("")] +[assembly: AssemblyCulture("")] +[assembly: System.Runtime.Versioning.SupportedOSPlatformAttribute("Windows8.1")] +[assembly: Fody.ConfigureAwait(false)] +[assembly: System.Runtime.CompilerServices.InternalsVisibleTo("Tests")] + +// Setting ComVisible to false makes the types in this assembly not visible +//to COM components. If you need to access a type in this assembly from +//COM, set the ComVisible attribute to true on that type. +[assembly: ComVisible(false)] + +// The following GUID is for the ID of the typelib if this project is exposed to COM +[assembly: Guid("4b041b91-5790-4571-8c58-c63ffe4bc9f8")] + +// Version information for an assembly consists of the following four values: +// +// Major Version +// Minor Version +// Build Number +// Revision +// +//You can specify all the values or you can default the Build and Revision Numbers +//by using the '*' as shown below: +// [assembly: AssemblyVersion("1.0.*")] +[assembly: AssemblyVersion(UpdateChecker.AssemblyVersion)] +// [assembly: AssemblyFileVersion("1.0.0.0")] \ No newline at end of file diff --git a/Netch/Properties/Resources.Designer.cs b/Netrix/Properties/Resources.Designer.cs similarity index 70% rename from Netch/Properties/Resources.Designer.cs rename to Netrix/Properties/Resources.Designer.cs index 377c2a8..5f110e2 100644 --- a/Netch/Properties/Resources.Designer.cs +++ b/Netrix/Properties/Resources.Designer.cs @@ -1,24 +1,24 @@ //------------------------------------------------------------------------------ // -// 此代码由工具生成。 -// 运行时版本:4.0.30319.42000 +// This code was generated by a tool. +// Runtime Version:4.0.30319.42000 // -// 对此文件的更改可能会导致不正确的行为，并且如果 -// 重新生成代码，这些更改将会丢失。 +// Changes to this file may cause incorrect behavior and will be lost if +// the code is regenerated. // //------------------------------------------------------------------------------ -namespace Netch.Properties { +namespace Netrix.Properties { using System; /// - /// 一个强类型的资源类，用于查找本地化的字符串等。 + /// A strongly-typed resource class, for looking up localized strings, etc. /// - // 此类是由 StronglyTypedResourceBuilder - // 类通过类似于 ResGen 或 Visual Studio 的工具自动生成的。 - // 若要添加或移除成员，请编辑 .ResX 文件，然后重新运行 ResGen - // (以 /str 作为命令选项)，或重新生成 VS 项目。 + // This class was auto-generated by the StronglyTypedResourceBuilder + // class via a tool like ResGen or Visual Studio. + // To add or remove a member, edit your .ResX file then rerun ResGen + // with the /str option, or rebuild your VS project. [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "17.0.0.0")] [global::System.Diagnostics.DebuggerNonUserCodeAttribute()] [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()] @@ -33,13 +33,13 @@ internal Resources() { } /// - /// 返回此类使用的缓存的 ResourceManager 实例。 + /// Returns the cached ResourceManager instance used by this class. /// [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)] internal static global::System.Resources.ResourceManager ResourceManager { get { if (object.ReferenceEquals(resourceMan, null)) { - global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Netch.Properties.Resources", typeof(Resources).Assembly); + global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Netrix.Properties.Resources", typeof(Resources).Assembly); resourceMan = temp; } return resourceMan; @@ -47,8 +47,8 @@ internal Resources() { } /// - /// 重写当前线程的 CurrentUICulture 属性，对 - /// 使用此强类型资源类的所有资源查找执行重写。 + /// Overrides the current thread's CurrentUICulture property for all + /// resource lookups using this strongly typed resource class. /// [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)] internal static global::System.Globalization.CultureInfo Culture { @@ -61,7 +61,7 @@ internal Resources() { } /// - /// 查找 System.Byte[] 类型的本地化资源。 + /// Looks up a localized resource of type System.Byte[]. /// internal static byte[] _7za { get { @@ -71,7 +71,7 @@ internal static byte[] _7za { } /// - /// 查找 System.Drawing.Bitmap 类型的本地化资源。 + /// Looks up a localized resource of type System.Drawing.Bitmap. /// internal static System.Drawing.Bitmap CopyLink { get { @@ -81,7 +81,7 @@ internal static System.Drawing.Bitmap CopyLink { } /// - /// 查找 System.Drawing.Bitmap 类型的本地化资源。 + /// Looks up a localized resource of type System.Drawing.Bitmap. /// internal static System.Drawing.Bitmap delete { get { @@ -91,7 +91,7 @@ internal static System.Drawing.Bitmap delete { } /// - /// 查找 System.Drawing.Bitmap 类型的本地化资源。 + /// Looks up a localized resource of type System.Drawing.Bitmap. /// internal static System.Drawing.Bitmap edit { get { @@ -101,7 +101,7 @@ internal static System.Drawing.Bitmap edit { } /// - /// 查找类似于 (图标) 的 System.Drawing.Icon 类型的本地化资源。 + /// Looks up a localized resource of type System.Drawing.Icon similar to (Icon). /// internal static System.Drawing.Icon icon { get { @@ -111,17 +111,17 @@ internal static System.Drawing.Icon icon { } /// - /// 查找 System.Drawing.Bitmap 类型的本地化资源。 + /// Looks up a localized resource of type System.Drawing.Bitmap. /// - internal static System.Drawing.Bitmap Netch { + internal static System.Drawing.Bitmap Netrix { get { - object obj = ResourceManager.GetObject("Netch", resourceCulture); + object obj = ResourceManager.GetObject("Netrix", resourceCulture); return ((System.Drawing.Bitmap)(obj)); } } /// - /// 查找 System.Drawing.Bitmap 类型的本地化资源。 + /// Looks up a localized resource of type System.Drawing.Bitmap. /// internal static System.Drawing.Bitmap speed { get { @@ -131,7 +131,7 @@ internal static System.Drawing.Bitmap speed { } /// - /// 查找 System.Byte[] 类型的本地化资源。 + /// Looks up a localized resource of type System.Byte[]. /// internal static byte[] zh_CN { get { diff --git a/Netch/Properties/Resources.resx b/Netrix/Properties/Resources.resx similarity index 95% rename from Netch/Properties/Resources.resx rename to Netrix/Properties/Resources.resx index dbe35b8..e131d7f 100644 --- a/Netch/Properties/Resources.resx +++ b/Netrix/Properties/Resources.resx @@ -134,8 +134,8 @@ ..\Resources\edit.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a - - ..\Resources\Netch.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, + + ..\Resources\Netrix.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a @@ -147,6 +147,6 @@ PublicKeyToken=b77a5c561934e089 - ..\Resources\Netch.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a + ..\Resources\Netrix.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a \ No newline at end of file diff --git a/Netch/Resources/7za.exe b/Netrix/Resources/7za.exe similarity index 100% rename from Netch/Resources/7za.exe rename to Netrix/Resources/7za.exe diff --git a/Netch/Resources/CopyLink.png b/Netrix/Resources/CopyLink.png similarity index 100% rename from Netch/Resources/CopyLink.png rename to Netrix/Resources/CopyLink.png diff --git a/Netrix/Resources/Netrix.ico b/Netrix/Resources/Netrix.ico new file mode 100644 index 0000000..c2374a5 Binary files /dev/null and b/Netrix/Resources/Netrix.ico differ diff --git a/Netrix/Resources/Netrix.png b/Netrix/Resources/Netrix.png new file mode 100644 index 0000000..6149bb8 Binary files /dev/null and b/Netrix/Resources/Netrix.png differ diff --git a/Netch/Resources/delete.png b/Netrix/Resources/delete.png similarity index 100% rename from Netch/Resources/delete.png rename to Netrix/Resources/delete.png diff --git a/Netch/Resources/edit.png b/Netrix/Resources/edit.png similarity index 100% rename from Netch/Resources/edit.png rename to Netrix/Resources/edit.png diff --git a/Netch/Resources/speed.png b/Netrix/Resources/speed.png similarity index 100% rename from Netch/Resources/speed.png rename to Netrix/Resources/speed.png diff --git a/Netch/Resources/zh-CN b/Netrix/Resources/zh-CN similarity index 96% rename from Netch/Resources/zh-CN rename to Netrix/Resources/zh-CN index 90ba5ce..237d2d1 100644 --- a/Netch/Resources/zh-CN +++ b/Netrix/Resources/zh-CN @@ -26,7 +26,7 @@ "Server": "服务器", "Import Servers From Clipboard": "从剪贴板导入服务器", "Add [{0}] Server": "添加 [{0}] 服务器", - "Netch is now minimized to the notification bar, double click this icon to restore.": "Netch 已最小化至通知栏，双击此图标恢复窗口", + "Netrix is now minimized to the notification bar, double click this icon to restore.": "Netrix 已最小化至通知栏，双击此图标恢复窗口", "New version available": "发现新版本", "Already latest version": "已经是最新版本", "Check for update failed": "检查更新失败", @@ -98,14 +98,13 @@ "{0} has been uninstalled": "{0} 已卸载", "Clean DNS Cache": "清理 DNS 缓存", "DNS cache cleanup succeeded": "DNS 缓存清理成功", - "Remove Netch Firewall Rules": "移除 Netch 防火墙规则", + "Remove Netrix Firewall Rules": "移除 Netrix 防火墙规则", "Open Directory": "打开目录", "Show/Hide Console": "显示/隐藏控制台", "About": "关于", "FAQ": "常见问题", - "Telegram Channel": "Telegram 频道", "Sponsor": "赞助商", "Configuration": "配置信息", diff --git a/Netch/Servers/SSH/SSHForm.cs b/Netrix/Servers/SSH/SSHForm.cs similarity index 91% rename from Netch/Servers/SSH/SSHForm.cs rename to Netrix/Servers/SSH/SSHForm.cs index 928d382..b8b5253 100644 --- a/Netch/Servers/SSH/SSHForm.cs +++ b/Netrix/Servers/SSH/SSHForm.cs @@ -1,19 +1,19 @@ -using Netch.Forms; - -namespace Netch.Servers; - -[Fody.ConfigureAwait(true)] -public class SSHForm : ServerForm -{ - public SSHForm(SSHServer? server = default) - { - server ??= new SSHServer(); - Server = server; - CreateTextBox("User", "User", s => true, s => server.User = s, server.User); - CreateTextBox("Password", "Password", s => true, s => server.Password = s, server.Password); - CreateTextBox("PrivateKey", "Private Key", s => true, s => server.PrivateKey = s, server.PrivateKey); - CreateTextBox("PublicKey", "Public Key", s => true, s => server.PublicKey = s, server.PublicKey); - } - - protected override string TypeName { get; } = "SSH"; +using Netrix.Forms; + +namespace Netrix.Servers; + +[Fody.ConfigureAwait(true)] +public class SSHForm : ServerForm +{ + public SSHForm(SSHServer? server = default) + { + server ??= new SSHServer(); + Server = server; + CreateTextBox("User", "User", s => true, s => server.User = s, server.User); + CreateTextBox("Password", "Password", s => true, s => server.Password = s, server.Password); + CreateTextBox("PrivateKey", "Private Key", s => true, s => server.PrivateKey = s, server.PrivateKey); + CreateTextBox("PublicKey", "Public Key", s => true, s => server.PublicKey = s, server.PublicKey); + } + + protected override string TypeName { get; } = "SSH"; } \ No newline at end of file diff --git a/Netch/Servers/SSH/SSHServer.cs b/Netrix/Servers/SSH/SSHServer.cs similarity index 76% rename from Netch/Servers/SSH/SSHServer.cs rename to Netrix/Servers/SSH/SSHServer.cs index 404f14f..ee0161c 100644 --- a/Netch/Servers/SSH/SSHServer.cs +++ b/Netrix/Servers/SSH/SSHServer.cs @@ -1,33 +1,33 @@ -using Netch.Models; - -namespace Netch.Servers; - -public class SSHServer : Server -{ - public override string Type { get; } = "SSH"; - - public override string MaskedData() - { - return $"{User}"; - } - - /// - /// 用户 - /// - public string User { get; set; } = "root"; - - /// - /// 密码 - /// - public string Password { get; set; } = string.Empty; - - /// - /// 私钥 - /// - public string PrivateKey { get; set; } - - /// - /// 主机公钥 - /// - public string? PublicKey { get; set; } -} +using Netrix.Models; + +namespace Netrix.Servers; + +public class SSHServer : Server +{ + public override string Type { get; } = "SSH"; + + public override string MaskedData() + { + return $"{User}"; + } + + /// + /// User + /// + public string User { get; set; } = "root"; + + /// + /// Password + /// + public string Password { get; set; } = string.Empty; + + /// + /// Private key + /// + public string PrivateKey { get; set; } + + /// + /// Host public key + /// + public string? PublicKey { get; set; } +} diff --git a/Netch/Servers/SSH/SSHUtil.cs b/Netrix/Servers/SSH/SSHUtil.cs similarity index 87% rename from Netch/Servers/SSH/SSHUtil.cs rename to Netrix/Servers/SSH/SSHUtil.cs index 166b0de..ce1433a 100644 --- a/Netch/Servers/SSH/SSHUtil.cs +++ b/Netrix/Servers/SSH/SSHUtil.cs @@ -1,53 +1,53 @@ -using System.Text.Encodings.Web; -using System.Text.Json; -using System.Text.Json.Serialization; -using Netch.Interfaces; -using Netch.Models; -using Netch.Utils; - -namespace Netch.Servers; - -public class SSHUtil : IServerUtil -{ - public ushort Priority { get; } = 4; - - public string TypeName { get; } = "SSH"; - - public string FullName { get; } = "SSH"; - - public string ShortName { get; } = "SSH"; - - public string[] UriScheme { get; } = { "ssh" }; - - public Type ServerType { get; } = typeof(SSHServer); - - public void Edit(Server s) - { - new SSHForm((SSHServer)s).ShowDialog(); - } - - public void Create() - { - new SSHForm().ShowDialog(); - } - - public string GetShareLink(Server s) - { - return V2rayUtils.GetVShareLink(s, "ssh"); - } - - public IServerController GetController() - { - return new V2rayController(); - } - - public IEnumerable ParseUri(string text) - { - return V2rayUtils.ParseVUri(text); - } - - public bool CheckServer(Server s) - { - return true; - } +using System.Text.Encodings.Web; +using System.Text.Json; +using System.Text.Json.Serialization; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Utils; + +namespace Netrix.Servers; + +public class SSHUtil : IServerUtil +{ + public ushort Priority { get; } = 4; + + public string TypeName { get; } = "SSH"; + + public string FullName { get; } = "SSH"; + + public string ShortName { get; } = "SSH"; + + public string[] UriScheme { get; } = { "ssh" }; + + public Type ServerType { get; } = typeof(SSHServer); + + public void Edit(Server s) + { + new SSHForm((SSHServer)s).ShowDialog(); + } + + public void Create() + { + new SSHForm().ShowDialog(); + } + + public string GetShareLink(Server s) + { + return V2rayUtils.GetVShareLink(s, "ssh"); + } + + public IServerController GetController() + { + return new V2rayController(); + } + + public IEnumerable ParseUri(string text) + { + return V2rayUtils.ParseVUri(text); + } + + public bool CheckServer(Server s) + { + return true; + } } \ No newline at end of file diff --git a/Netch/Servers/Shadowsocks/ShadowsocksController.cs b/Netrix/Servers/Shadowsocks/ShadowsocksController.cs similarity index 92% rename from Netch/Servers/Shadowsocks/ShadowsocksController.cs rename to Netrix/Servers/Shadowsocks/ShadowsocksController.cs index 2909afa..390c3a8 100644 --- a/Netch/Servers/Shadowsocks/ShadowsocksController.cs +++ b/Netrix/Servers/Shadowsocks/ShadowsocksController.cs @@ -1,10 +1,10 @@ using System.Net; using System.Text; -using Netch.Controllers; -using Netch.Interfaces; -using Netch.Models; +using Netrix.Controllers; +using Netrix.Interfaces; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class ShadowsocksController : Guard, IServerController { diff --git a/Netch/Servers/Shadowsocks/ShadowsocksForm.cs b/Netrix/Servers/Shadowsocks/ShadowsocksForm.cs similarity index 91% rename from Netch/Servers/Shadowsocks/ShadowsocksForm.cs rename to Netrix/Servers/Shadowsocks/ShadowsocksForm.cs index 8f9a934..6a16adf 100644 --- a/Netch/Servers/Shadowsocks/ShadowsocksForm.cs +++ b/Netrix/Servers/Shadowsocks/ShadowsocksForm.cs @@ -1,7 +1,7 @@ -using Netch.Forms; -using Netch.Utils; +using Netrix.Forms; +using Netrix.Utils; -namespace Netch.Servers; +namespace Netrix.Servers; [Fody.ConfigureAwait(true)] public class ShadowsocksForm : ServerForm diff --git a/Netch/Servers/Shadowsocks/ShadowsocksServer.cs b/Netrix/Servers/Shadowsocks/ShadowsocksServer.cs similarity index 91% rename from Netch/Servers/Shadowsocks/ShadowsocksServer.cs rename to Netrix/Servers/Shadowsocks/ShadowsocksServer.cs index 3f1a52e..712b8e0 100644 --- a/Netch/Servers/Shadowsocks/ShadowsocksServer.cs +++ b/Netrix/Servers/Shadowsocks/ShadowsocksServer.cs @@ -1,6 +1,6 @@ -using Netch.Models; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class ShadowsocksServer : Server { @@ -11,22 +11,22 @@ public override string MaskedData() } /// - /// 加密方式 + /// Encryption method /// public string EncryptMethod { get; set; } = SSGlobal.EncryptMethods[4]; /// - /// 密码 + /// Password /// public string Password { get; set; } = string.Empty; /// - /// 插件 + /// Plugin /// public string? Plugin { get; set; } /// - /// 插件参数 + /// Plugin parameter /// public string? PluginOption { get; set; } @@ -39,7 +39,7 @@ public bool HasPlugin() public static class SSGlobal { /// - /// SS 加密列表 + /// SS encryption methods /// public static readonly List EncryptMethods = new() { diff --git a/Netch/Servers/Shadowsocks/ShadowsocksUtil.cs b/Netrix/Servers/Shadowsocks/ShadowsocksUtil.cs similarity index 98% rename from Netch/Servers/Shadowsocks/ShadowsocksUtil.cs rename to Netrix/Servers/Shadowsocks/ShadowsocksUtil.cs index 5da279a..fe5f87b 100644 --- a/Netch/Servers/Shadowsocks/ShadowsocksUtil.cs +++ b/Netrix/Servers/Shadowsocks/ShadowsocksUtil.cs @@ -1,11 +1,11 @@ using System.Text.Json; using System.Text.RegularExpressions; using System.Web; -using Netch.Interfaces; -using Netch.Models; -using Netch.Utils; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Utils; -namespace Netch.Servers; +namespace Netrix.Servers; public class ShadowsocksUtil : IServerUtil { diff --git a/Netch/Servers/Shadowsocks/ShareModels/SSDJObject.cs b/Netrix/Servers/Shadowsocks/ShareModels/SSDJObject.cs similarity index 73% rename from Netch/Servers/Shadowsocks/ShareModels/SSDJObject.cs rename to Netrix/Servers/Shadowsocks/ShareModels/SSDJObject.cs index fa86c6d..ffc938f 100644 --- a/Netch/Servers/Shadowsocks/ShareModels/SSDJObject.cs +++ b/Netrix/Servers/Shadowsocks/ShareModels/SSDJObject.cs @@ -1,40 +1,40 @@ #nullable disable -namespace Netch.Servers; +namespace Netrix.Servers; public class SSDJObject { /// - /// 机场名 + /// Provider name /// public string airport; /// - /// 加密方式 + /// Encryption method /// public string encryption; /// - /// 密码 + /// Password /// public string password; /// - /// 插件 + /// Plugin /// public string plugin; /// - /// 插件参数 + /// Plugin parameter /// public string plugin_options; /// - /// 端口 + /// Port /// public ushort port; /// - /// 服务器数组 + /// Server array /// public List servers; } \ No newline at end of file diff --git a/Netch/Servers/Shadowsocks/ShareModels/SSDServerJObject.cs b/Netrix/Servers/Shadowsocks/ShareModels/SSDServerJObject.cs similarity index 73% rename from Netch/Servers/Shadowsocks/ShareModels/SSDServerJObject.cs rename to Netrix/Servers/Shadowsocks/ShareModels/SSDServerJObject.cs index 3a1f482..fef60dc 100644 --- a/Netch/Servers/Shadowsocks/ShareModels/SSDServerJObject.cs +++ b/Netrix/Servers/Shadowsocks/ShareModels/SSDServerJObject.cs @@ -1,39 +1,39 @@ #nullable disable -namespace Netch.Servers; +namespace Netrix.Servers; public class SSDServerJObject { /// - /// 加密方式 + /// Encryption method /// public string encryption; /// - /// 密码 + /// Password /// public string password; /// - /// 插件 + /// Plugin /// public string plugin; /// - /// 插件参数 + /// Plugin parameter /// public string plugin_options; /// - /// 端口 + /// Port /// public ushort port; /// - /// 备注 + /// Remark /// public string remarks; /// - /// 服务器地址 + /// Server address /// public string server; } \ No newline at end of file diff --git a/Netch/Servers/Shadowsocks/ShareModels/ShadowsocksConfig.cs b/Netrix/Servers/Shadowsocks/ShareModels/ShadowsocksConfig.cs similarity index 94% rename from Netch/Servers/Shadowsocks/ShareModels/ShadowsocksConfig.cs rename to Netrix/Servers/Shadowsocks/ShareModels/ShadowsocksConfig.cs index b70ce3d..7fef082 100644 --- a/Netch/Servers/Shadowsocks/ShareModels/ShadowsocksConfig.cs +++ b/Netrix/Servers/Shadowsocks/ShareModels/ShadowsocksConfig.cs @@ -1,5 +1,5 @@ #nullable disable -namespace Netch.Servers; +namespace Netrix.Servers; /// /// Import Shadowsocks Server from Json Configuration diff --git a/Netch/Servers/ShadowsocksR/ShadowsocksRController.cs b/Netrix/Servers/ShadowsocksR/ShadowsocksRController.cs similarity index 92% rename from Netch/Servers/ShadowsocksR/ShadowsocksRController.cs rename to Netrix/Servers/ShadowsocksR/ShadowsocksRController.cs index 69064ca..e6f332e 100644 --- a/Netch/Servers/ShadowsocksR/ShadowsocksRController.cs +++ b/Netrix/Servers/ShadowsocksR/ShadowsocksRController.cs @@ -1,9 +1,9 @@ using System.Net; -using Netch.Controllers; -using Netch.Interfaces; -using Netch.Models; +using Netrix.Controllers; +using Netrix.Interfaces; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class ShadowsocksRController : Guard, IServerController { diff --git a/Netch/Servers/ShadowsocksR/ShadowsocksRForm.cs b/Netrix/Servers/ShadowsocksR/ShadowsocksRForm.cs similarity index 93% rename from Netch/Servers/ShadowsocksR/ShadowsocksRForm.cs rename to Netrix/Servers/ShadowsocksR/ShadowsocksRForm.cs index b307e61..41ba422 100644 --- a/Netch/Servers/ShadowsocksR/ShadowsocksRForm.cs +++ b/Netrix/Servers/ShadowsocksR/ShadowsocksRForm.cs @@ -1,7 +1,7 @@ -using Netch.Forms; -using Netch.Utils; +using Netrix.Forms; +using Netrix.Utils; -namespace Netch.Servers; +namespace Netrix.Servers; [Fody.ConfigureAwait(true)] public class ShadowsocksRForm : ServerForm diff --git a/Netch/Servers/ShadowsocksR/ShadowsocksRServer.cs b/Netrix/Servers/ShadowsocksR/ShadowsocksRServer.cs similarity index 82% rename from Netch/Servers/ShadowsocksR/ShadowsocksRServer.cs rename to Netrix/Servers/ShadowsocksR/ShadowsocksRServer.cs index d1bd23b..052b36f 100644 --- a/Netch/Servers/ShadowsocksR/ShadowsocksRServer.cs +++ b/Netrix/Servers/ShadowsocksR/ShadowsocksRServer.cs @@ -1,6 +1,6 @@ -using Netch.Models; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class ShadowsocksRServer : Server { @@ -11,32 +11,32 @@ public override string MaskedData() } /// - /// 密码 + /// Password /// public string Password { get; set; } = string.Empty; /// - /// 加密方式 + /// Encryption method /// public string EncryptMethod { get; set; } = SSRGlobal.EncryptMethods[4]; /// - /// 协议 + /// Protocol /// public string Protocol { get; set; } = SSRGlobal.Protocols[0]; /// - /// 协议参数 + /// Protocol parameter /// public string? ProtocolParam { get; set; } /// - /// 混淆 + /// Obfuscation /// public string OBFS { get; set; } = SSRGlobal.OBFSs[0]; /// - /// 混淆参数 + /// Obfuscation parameter /// public string? OBFSParam { get; set; } } @@ -44,7 +44,7 @@ public override string MaskedData() public class SSRGlobal { /// - /// SSR 协议列表 + /// SSR protocol list /// public static readonly List Protocols = new() { @@ -57,7 +57,7 @@ public class SSRGlobal }; /// - /// SSR 混淆列表 + /// SSR obfuscation list /// public static readonly List OBFSs = new() { @@ -71,7 +71,7 @@ public class SSRGlobal }; /// - /// SS/SSR 加密方式 + /// SS/SSR encryption methods /// public static readonly List EncryptMethods = SSGlobal.EncryptMethods; } \ No newline at end of file diff --git a/Netch/Servers/ShadowsocksR/ShadowsocksRUtil.cs b/Netrix/Servers/ShadowsocksR/ShadowsocksRUtil.cs similarity index 97% rename from Netch/Servers/ShadowsocksR/ShadowsocksRUtil.cs rename to Netrix/Servers/ShadowsocksR/ShadowsocksRUtil.cs index a9379c9..c7c1f22 100644 --- a/Netch/Servers/ShadowsocksR/ShadowsocksRUtil.cs +++ b/Netrix/Servers/ShadowsocksR/ShadowsocksRUtil.cs @@ -1,9 +1,9 @@ using System.Text.RegularExpressions; -using Netch.Interfaces; -using Netch.Models; -using Netch.Utils; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Utils; -namespace Netch.Servers; +namespace Netrix.Servers; public class ShadowsocksRUtil : IServerUtil { @@ -49,7 +49,7 @@ public IServerController GetController() } /// - /// SSR链接解析器 + /// SSR link parser /// Copy From /// https://github.com/HMBSbige/ShadowsocksR-Windows/blob/d9dc8d032a6e04c14b9dc6c8f673c9cc5aa9f607/shadowsocks-csharp/Model/Server.cs#L428 /// Thx :D diff --git a/Netch/Servers/Socks5/Socks5Controller.cs b/Netrix/Servers/Socks5/Socks5Controller.cs similarity index 87% rename from Netch/Servers/Socks5/Socks5Controller.cs rename to Netrix/Servers/Socks5/Socks5Controller.cs index 9bd8110..8285051 100644 --- a/Netch/Servers/Socks5/Socks5Controller.cs +++ b/Netrix/Servers/Socks5/Socks5Controller.cs @@ -1,6 +1,6 @@ -using Netch.Models; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class Socks5Controller : V2rayController { diff --git a/Netch/Servers/Socks5/Socks5Form.cs b/Netrix/Servers/Socks5/Socks5Form.cs similarity index 95% rename from Netch/Servers/Socks5/Socks5Form.cs rename to Netrix/Servers/Socks5/Socks5Form.cs index c0a1667..30a5a7b 100644 --- a/Netch/Servers/Socks5/Socks5Form.cs +++ b/Netrix/Servers/Socks5/Socks5Form.cs @@ -1,7 +1,7 @@ -using Netch.Forms; -using Netch.Utils; +using Netrix.Forms; +using Netrix.Utils; -namespace Netch.Servers; +namespace Netrix.Servers; [Fody.ConfigureAwait(true)] public class Socks5Form : ServerForm diff --git a/Netch/Servers/Socks5/Socks5Server.cs b/Netrix/Servers/Socks5/Socks5Server.cs similarity index 91% rename from Netch/Servers/Socks5/Socks5Server.cs rename to Netrix/Servers/Socks5/Socks5Server.cs index a83e4c6..af5543a 100644 --- a/Netch/Servers/Socks5/Socks5Server.cs +++ b/Netrix/Servers/Socks5/Socks5Server.cs @@ -1,25 +1,25 @@ -using Netch.Models; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class Socks5Server : Server { public override string Type { get; } = "SOCKS"; /// - /// 密码 + /// Password /// public string? Password { get; set; } /// - /// 账号 + /// Account /// public string? Username { get; set; } public string? RemoteHostname { get; set; } /// - /// 版本 + /// Version /// public string Version { get; set; } = SOCKSGlobal.Versions[0]; diff --git a/Netch/Servers/Socks5/Socks5Util.cs b/Netrix/Servers/Socks5/Socks5Util.cs similarity index 93% rename from Netch/Servers/Socks5/Socks5Util.cs rename to Netrix/Servers/Socks5/Socks5Util.cs index 41c1926..bcde2da 100644 --- a/Netch/Servers/Socks5/Socks5Util.cs +++ b/Netrix/Servers/Socks5/Socks5Util.cs @@ -1,7 +1,7 @@ -using Netch.Interfaces; -using Netch.Models; +using Netrix.Interfaces; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class Socks5Util : IServerUtil { @@ -33,7 +33,7 @@ public string GetShareLink(Server s) // https://t.me/socks?server=1.1.1.1&port=443 return $"https://t.me/socks?server={server.Hostname}&port={server.Port}" + $"{(!string.IsNullOrWhiteSpace(server.Username) ? $"&user={server.Username}" : "")}" + - $"{(server.Auth() ? $"&user={server.Password}" : "")}"; + $"{(server.Auth() ? $"&pass={server.Password}" : "")}"; } public IServerController GetController() diff --git a/Netch/Servers/Trojan/TrojanConfig.cs b/Netrix/Servers/Trojan/TrojanConfig.cs similarity index 91% rename from Netch/Servers/Trojan/TrojanConfig.cs rename to Netrix/Servers/Trojan/TrojanConfig.cs index 315bd6c..974db19 100644 --- a/Netch/Servers/Trojan/TrojanConfig.cs +++ b/Netrix/Servers/Trojan/TrojanConfig.cs @@ -1,40 +1,40 @@ #nullable disable -namespace Netch.Servers; +namespace Netrix.Servers; public class TrojanConfig { /// - /// 监听地址 + /// Listen address /// public string local_addr { get; set; } = "127.0.0.1"; /// - /// 监听端口 + /// Listen port /// public int local_port { get; set; } = 2801; /// - /// 日志级别 + /// Log level /// public int log_level { get; set; } = 1; /// - /// 密码 + /// Password /// public List password { get; set; } /// - /// 远端地址 + /// Remote address /// public string remote_addr { get; set; } /// - /// 远端端口 + /// Remote port /// public int remote_port { get; set; } /// - /// 启动类型 + /// Start type /// public string run_type { get; set; } = "client"; diff --git a/Netch/Servers/Trojan/TrojanController.cs b/Netrix/Servers/Trojan/TrojanController.cs similarity index 92% rename from Netch/Servers/Trojan/TrojanController.cs rename to Netrix/Servers/Trojan/TrojanController.cs index 2afd10a..a07f9b1 100644 --- a/Netch/Servers/Trojan/TrojanController.cs +++ b/Netrix/Servers/Trojan/TrojanController.cs @@ -1,11 +1,11 @@ using System.Net; using System.Text.Json; -using Netch.Controllers; -using Netch.Interfaces; -using Netch.Models; -using Netch.Utils; +using Netrix.Controllers; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Utils; -namespace Netch.Servers; +namespace Netrix.Servers; public class TrojanController : Guard, IServerController { diff --git a/Netch/Servers/Trojan/TrojanForm.cs b/Netrix/Servers/Trojan/TrojanForm.cs similarity index 92% rename from Netch/Servers/Trojan/TrojanForm.cs rename to Netrix/Servers/Trojan/TrojanForm.cs index 7fcf436..4bbda40 100644 --- a/Netch/Servers/Trojan/TrojanForm.cs +++ b/Netrix/Servers/Trojan/TrojanForm.cs @@ -1,6 +1,6 @@ -using Netch.Forms; +using Netrix.Forms; -namespace Netch.Servers; +namespace Netrix.Servers; [Fody.ConfigureAwait(true)] public class TrojanForm : ServerForm diff --git a/Netch/Servers/Trojan/TrojanServer.cs b/Netrix/Servers/Trojan/TrojanServer.cs similarity index 83% rename from Netch/Servers/Trojan/TrojanServer.cs rename to Netrix/Servers/Trojan/TrojanServer.cs index 15cb3cb..a74f918 100644 --- a/Netch/Servers/Trojan/TrojanServer.cs +++ b/Netrix/Servers/Trojan/TrojanServer.cs @@ -1,6 +1,6 @@ -using Netch.Models; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class TrojanServer : Server { @@ -14,17 +14,17 @@ public override string MaskedData() } /// - /// 密码 + /// Password /// public string Password { get; set; } = string.Empty; /// - /// 伪装域名 + /// Camouflage host /// public string? Host { get; set; } /// - /// TLS 底层传输安全 + /// TLS transport security /// public string TLSSecureType { diff --git a/Netch/Servers/Trojan/TrojanUtil.cs b/Netrix/Servers/Trojan/TrojanUtil.cs similarity index 97% rename from Netch/Servers/Trojan/TrojanUtil.cs rename to Netrix/Servers/Trojan/TrojanUtil.cs index 4ec4a58..be17c7d 100644 --- a/Netch/Servers/Trojan/TrojanUtil.cs +++ b/Netrix/Servers/Trojan/TrojanUtil.cs @@ -1,9 +1,9 @@ using System.Text.RegularExpressions; using System.Web; -using Netch.Interfaces; -using Netch.Models; +using Netrix.Interfaces; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class TrojanUtil : IServerUtil { diff --git a/Netch/Servers/V2ray/ShareModels/V2rayNJObject.cs b/Netrix/Servers/V2ray/ShareModels/V2rayNJObject.cs similarity index 76% rename from Netch/Servers/V2ray/ShareModels/V2rayNJObject.cs rename to Netrix/Servers/V2ray/ShareModels/V2rayNJObject.cs index deea294..4f9c820 100644 --- a/Netch/Servers/V2ray/ShareModels/V2rayNJObject.cs +++ b/Netrix/Servers/V2ray/ShareModels/V2rayNJObject.cs @@ -1,64 +1,64 @@ -namespace Netch.Servers; +namespace Netrix.Servers; public class V2rayNJObject { /// - /// 链接版本 + /// Link version /// public int v { get; set; } = 2; /// - /// 备注 + /// Remark /// public string ps { get; set; } = string.Empty; /// - /// 地址 + /// Address /// public string add { get; set; } = string.Empty; /// - /// 端口 + /// Port /// public ushort port { get; set; } /// - /// 用户 ID + /// User ID /// public string id { get; set; } = string.Empty; /// - /// 额外 ID + /// Alter ID /// public int aid { get; set; } /// - /// 加密方式 (security) + /// Encryption method (security) /// public string scy { get; set; } = "auto"; /// - /// 传输协议 + /// Transport protocol /// public string net { get; set; } = string.Empty; /// - /// 伪装类型 + /// Camouflage type /// public string type { get; set; } = string.Empty; /// - /// 伪装域名（HTTP，WS） + /// Camouflage host (HTTP, WS) /// public string host { get; set; } = string.Empty; /// - /// 伪装路径/服务名称 + /// Camouflage path / service name /// public string path { get; set; } = string.Empty; /// - /// 是否使用 TLS + /// Whether to use TLS /// public string tls { get; set; } = string.Empty; diff --git a/Netch/Servers/V2ray/V2rayConfig.cs b/Netrix/Servers/V2ray/V2rayConfig.cs similarity index 99% rename from Netch/Servers/V2ray/V2rayConfig.cs rename to Netrix/Servers/V2ray/V2rayConfig.cs index d1db9e0..45b8468 100644 --- a/Netch/Servers/V2ray/V2rayConfig.cs +++ b/Netrix/Servers/V2ray/V2rayConfig.cs @@ -1,7 +1,7 @@ #nullable disable // ReSharper disable InconsistentNaming -namespace Netch.Servers; +namespace Netrix.Servers; public struct V2rayConfig { diff --git a/Netch/Servers/V2ray/V2rayConfigUtils.cs b/Netrix/Servers/V2ray/V2rayConfigUtils.cs similarity index 99% rename from Netch/Servers/V2ray/V2rayConfigUtils.cs rename to Netrix/Servers/V2ray/V2rayConfigUtils.cs index 5307e6d..00da199 100644 --- a/Netch/Servers/V2ray/V2rayConfigUtils.cs +++ b/Netrix/Servers/V2ray/V2rayConfigUtils.cs @@ -1,9 +1,9 @@ -using Netch.Models; -using Netch.Utils; +using Netrix.Models; +using Netrix.Utils; #pragma warning disable VSTHRD200 -namespace Netch.Servers; +namespace Netrix.Servers; public static class V2rayConfigUtils { diff --git a/Netch/Servers/V2ray/V2rayController.cs b/Netrix/Servers/V2ray/V2rayController.cs similarity index 92% rename from Netch/Servers/V2ray/V2rayController.cs rename to Netrix/Servers/V2ray/V2rayController.cs index 007b1f9..b3a683c 100644 --- a/Netch/Servers/V2ray/V2rayController.cs +++ b/Netrix/Servers/V2ray/V2rayController.cs @@ -1,10 +1,10 @@ using System.Net; using System.Text.Json; -using Netch.Controllers; -using Netch.Interfaces; -using Netch.Models; +using Netrix.Controllers; +using Netrix.Interfaces; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class V2rayController : Guard, IServerController { diff --git a/Netch/Servers/V2ray/V2rayUtils.cs b/Netrix/Servers/V2ray/V2rayUtils.cs similarity index 98% rename from Netch/Servers/V2ray/V2rayUtils.cs rename to Netrix/Servers/V2ray/V2rayUtils.cs index 590bef5..fa18dd2 100644 --- a/Netch/Servers/V2ray/V2rayUtils.cs +++ b/Netrix/Servers/V2ray/V2rayUtils.cs @@ -1,9 +1,9 @@ using System.Text.RegularExpressions; using System.Web; -using Netch.Models; -using Netch.Utils; +using Netrix.Models; +using Netrix.Utils; -namespace Netch.Servers; +namespace Netrix.Servers; public static class V2rayUtils { diff --git a/Netch/Servers/VLESS/VLESSForm.cs b/Netrix/Servers/VLESS/VLESSForm.cs similarity index 97% rename from Netch/Servers/VLESS/VLESSForm.cs rename to Netrix/Servers/VLESS/VLESSForm.cs index 2698c4a..30c12c5 100644 --- a/Netch/Servers/VLESS/VLESSForm.cs +++ b/Netrix/Servers/VLESS/VLESSForm.cs @@ -1,6 +1,6 @@ -using Netch.Forms; +using Netrix.Forms; -namespace Netch.Servers; +namespace Netrix.Servers; [Fody.ConfigureAwait(true)] internal class VLESSForm : ServerForm diff --git a/Netch/Servers/VLESS/VLESSServer.cs b/Netrix/Servers/VLESS/VLESSServer.cs similarity index 87% rename from Netch/Servers/VLESS/VLESSServer.cs rename to Netrix/Servers/VLESS/VLESSServer.cs index 8acc341..2768f4a 100644 --- a/Netch/Servers/VLESS/VLESSServer.cs +++ b/Netrix/Servers/VLESS/VLESSServer.cs @@ -1,21 +1,21 @@ -namespace Netch.Servers; +namespace Netrix.Servers; public class VLESSServer : VMessServer { public override string Type { get; } = "VLESS"; /// - /// 加密方式 + /// Encryption method /// public override string EncryptMethod { get; set; } = "none"; /// - /// 传输协议 + /// Transport protocol /// public override string TransferProtocol { get; set; } = VLESSGlobal.TransferProtocols[0]; /// - /// 伪装类型 + /// Camouflage type /// public override string FakeType { get; set; } = VLESSGlobal.FakeTypes[0]; } diff --git a/Netch/Servers/VLESS/VLESSUtil.cs b/Netrix/Servers/VLESS/VLESSUtil.cs similarity index 92% rename from Netch/Servers/VLESS/VLESSUtil.cs rename to Netrix/Servers/VLESS/VLESSUtil.cs index 527d5c2..28febd0 100644 --- a/Netch/Servers/VLESS/VLESSUtil.cs +++ b/Netrix/Servers/VLESS/VLESSUtil.cs @@ -1,7 +1,7 @@ -using Netch.Interfaces; -using Netch.Models; +using Netrix.Interfaces; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class VLESSUtil : IServerUtil { diff --git a/Netch/Servers/VMess/VMessForm.cs b/Netrix/Servers/VMess/VMessForm.cs similarity index 97% rename from Netch/Servers/VMess/VMessForm.cs rename to Netrix/Servers/VMess/VMessForm.cs index 30df79a..31b7ec4 100644 --- a/Netch/Servers/VMess/VMessForm.cs +++ b/Netrix/Servers/VMess/VMessForm.cs @@ -1,6 +1,6 @@ -using Netch.Forms; +using Netrix.Forms; -namespace Netch.Servers; +namespace Netrix.Servers; [Fody.ConfigureAwait(true)] public class VMessForm : ServerForm diff --git a/Netch/Servers/VMess/VMessServer.cs b/Netrix/Servers/VMess/VMessServer.cs similarity index 86% rename from Netch/Servers/VMess/VMessServer.cs rename to Netrix/Servers/VMess/VMessServer.cs index 500ab6e..30ef0d6 100644 --- a/Netch/Servers/VMess/VMessServer.cs +++ b/Netrix/Servers/VMess/VMessServer.cs @@ -1,6 +1,6 @@ -using Netch.Models; +using Netrix.Models; -namespace Netch.Servers; +namespace Netrix.Servers; public class VMessServer : Server { @@ -30,57 +30,57 @@ public override string MaskedData() } /// - /// 用户 ID + /// User ID /// public string UserID { get; set; } = string.Empty; /// - /// 额外 ID + /// Alter ID /// public int AlterID { get; set; } /// - /// 加密方式 + /// Encryption method /// public virtual string EncryptMethod { get; set; } = VMessGlobal.EncryptMethods[0]; /// - /// 传输协议 + /// Transport protocol /// public virtual string TransferProtocol { get; set; } = VMessGlobal.TransferProtocols[0]; /// - /// 包传输格式 + /// Packet encoding /// public virtual string PacketEncoding { get; set; } = VMessGlobal.PacketEncodings[2]; /// - /// 伪装类型 + /// Camouflage type /// public virtual string FakeType { get; set; } = VMessGlobal.FakeTypes[0]; /// - /// 伪装域名 + /// Camouflage host /// public string? Host { get; set; } /// - /// 传输路径 + /// Transport path /// public string? Path { get; set; } /// - /// QUIC 加密方式 + /// QUIC encryption method /// public string? QUICSecure { get; set; } = VMessGlobal.QUIC[0]; /// - /// QUIC 加密密钥 + /// QUIC encryption key /// public string? QUICSecret { get; set; } = string.Empty; /// - /// TLS 底层传输安全 + /// TLS transport security /// public string TLSSecureType { @@ -95,7 +95,7 @@ public string TLSSecureType } /// - /// Mux 多路复用 + /// Mux (multiplexing) /// public bool? UseMux { get; set; } @@ -128,7 +128,7 @@ public class VMessGlobal }; /// - /// V2Ray 传输协议 + /// V2Ray transport protocols /// public static readonly List TransferProtocols = new() { @@ -141,7 +141,7 @@ public class VMessGlobal }; /// - /// V2Ray 伪装类型 + /// V2Ray camouflage types /// public static readonly List FakeTypes = new() { @@ -157,7 +157,7 @@ public class VMessGlobal }; /// - /// TLS 安全类型 + /// TLS security types /// public static readonly List TLSSecure = new() { diff --git a/Netch/Servers/VMess/VMessUtil.cs b/Netrix/Servers/VMess/VMessUtil.cs similarity index 97% rename from Netch/Servers/VMess/VMessUtil.cs rename to Netrix/Servers/VMess/VMessUtil.cs index 2578d4d..8fd91e1 100644 --- a/Netch/Servers/VMess/VMessUtil.cs +++ b/Netrix/Servers/VMess/VMessUtil.cs @@ -1,11 +1,11 @@ using System.Text.Encodings.Web; using System.Text.Json; using System.Text.Json.Serialization; -using Netch.Interfaces; -using Netch.Models; -using Netch.Utils; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Utils; -namespace Netch.Servers; +namespace Netrix.Servers; public class VMessUtil : IServerUtil { diff --git a/Netch/Servers/WireGuard/WireGuardForm.cs b/Netrix/Servers/WireGuard/WireGuardForm.cs similarity index 93% rename from Netch/Servers/WireGuard/WireGuardForm.cs rename to Netrix/Servers/WireGuard/WireGuardForm.cs index 1a63a6b..c5dd9b6 100644 --- a/Netch/Servers/WireGuard/WireGuardForm.cs +++ b/Netrix/Servers/WireGuard/WireGuardForm.cs @@ -1,20 +1,20 @@ -using Netch.Forms; - -namespace Netch.Servers; - -[Fody.ConfigureAwait(true)] -public class WireGuardForm : ServerForm -{ - public WireGuardForm(WireGuardServer? server = default) - { - server ??= new WireGuardServer(); - Server = server; - CreateTextBox("LocalAddresses", "Local Addresses", s => true, s => server.LocalAddresses = s, server.LocalAddresses); - CreateTextBox("PeerPublicKey", "Public Key", s => true, s => server.PeerPublicKey = s, server.PeerPublicKey); - CreateTextBox("PrivateKey", "Private Key", s => true, s => server.PrivateKey = s, server.PrivateKey); - CreateTextBox("PreSharedKey", "PSK", s => true, s => server.PreSharedKey = s, server.PreSharedKey); - CreateTextBox("MTU", "MTU", s => int.TryParse(s, out _), s => server.MTU = int.Parse(s), server.MTU.ToString(), 76); - } - - protected override string TypeName { get; } = "WireGuard"; +using Netrix.Forms; + +namespace Netrix.Servers; + +[Fody.ConfigureAwait(true)] +public class WireGuardForm : ServerForm +{ + public WireGuardForm(WireGuardServer? server = default) + { + server ??= new WireGuardServer(); + Server = server; + CreateTextBox("LocalAddresses", "Local Addresses", s => true, s => server.LocalAddresses = s, server.LocalAddresses); + CreateTextBox("PeerPublicKey", "Public Key", s => true, s => server.PeerPublicKey = s, server.PeerPublicKey); + CreateTextBox("PrivateKey", "Private Key", s => true, s => server.PrivateKey = s, server.PrivateKey); + CreateTextBox("PreSharedKey", "PSK", s => true, s => server.PreSharedKey = s, server.PreSharedKey); + CreateTextBox("MTU", "MTU", s => int.TryParse(s, out _), s => server.MTU = int.Parse(s), server.MTU.ToString(), 76); + } + + protected override string TypeName { get; } = "WireGuard"; } \ No newline at end of file diff --git a/Netch/Servers/WireGuard/WireGuardServer.cs b/Netrix/Servers/WireGuard/WireGuardServer.cs similarity index 78% rename from Netch/Servers/WireGuard/WireGuardServer.cs rename to Netrix/Servers/WireGuard/WireGuardServer.cs index 7ceb834..a560d8a 100644 --- a/Netch/Servers/WireGuard/WireGuardServer.cs +++ b/Netrix/Servers/WireGuard/WireGuardServer.cs @@ -1,38 +1,38 @@ -using Netch.Models; - -namespace Netch.Servers; - -public class WireGuardServer : Server -{ - public override string Type { get; } = "WireGuard"; - - public override string MaskedData() - { - return $"{LocalAddresses} + {MTU}"; - } - - /// - /// 本地地址 - /// - public string LocalAddresses { get; set; } = "172.16.0.2"; - - /// - /// 节点公钥 - /// - public string PeerPublicKey { get; set; } = string.Empty; - - /// - /// 私钥 - /// - public string PrivateKey { get; set; } - - /// - /// 节点预共享密钥 - /// - public string? PreSharedKey { get; set; } - - /// - /// MTU - /// - public int MTU { get; set; } = 1420; -} +using Netrix.Models; + +namespace Netrix.Servers; + +public class WireGuardServer : Server +{ + public override string Type { get; } = "WireGuard"; + + public override string MaskedData() + { + return $"{LocalAddresses} + {MTU}"; + } + + /// + /// Local address + /// + public string LocalAddresses { get; set; } = "172.16.0.2"; + + /// + /// Peer public key + /// + public string PeerPublicKey { get; set; } = string.Empty; + + /// + /// Private key + /// + public string PrivateKey { get; set; } + + /// + /// Peer pre-shared key + /// + public string? PreSharedKey { get; set; } + + /// + /// MTU + /// + public int MTU { get; set; } = 1420; +} diff --git a/Netrix/Servers/WireGuard/WireGuardUtil.cs b/Netrix/Servers/WireGuard/WireGuardUtil.cs new file mode 100644 index 0000000..ea69f0f --- /dev/null +++ b/Netrix/Servers/WireGuard/WireGuardUtil.cs @@ -0,0 +1,81 @@ +using System.Text.Encodings.Web; +using System.Text.Json; +using System.Text.Json.Serialization; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Utils; + +namespace Netrix.Servers; + +public class WireGuardUtil : IServerUtil +{ + public ushort Priority { get; } = 4; + + public string TypeName { get; } = "WireGuard"; + + public string FullName { get; } = "WireGuard"; + + public string ShortName { get; } = "WG"; + + public string[] UriScheme { get; } = { "wireguard" }; + + public Type ServerType { get; } = typeof(WireGuardServer); + + public void Edit(Server s) + { + new WireGuardForm((WireGuardServer)s).ShowDialog(); + } + + public void Create() + { + new WireGuardForm().ShowDialog(); + } + + public string GetShareLink(Server s) + { + // wireguard://privatekey@host:port?publickey=..&address=..&mtu=..[&presharedkey=..]#remark + var server = (WireGuardServer)s; + var query = $"publickey={Uri.EscapeDataString(server.PeerPublicKey)}&address={Uri.EscapeDataString(server.LocalAddresses)}&mtu={server.MTU}"; + if (!string.IsNullOrEmpty(server.PreSharedKey)) + query += $"&presharedkey={Uri.EscapeDataString(server.PreSharedKey)}"; + + return $"wireguard://{Uri.EscapeDataString(server.PrivateKey)}@{server.Hostname}:{server.Port}?{query}#{Uri.EscapeDataString(server.Remark)}"; + } + + public IServerController GetController() + { + return new V2rayController(); + } + + public IEnumerable ParseUri(string text) + { + var data = new WireGuardServer(); + + if (text.Contains('#')) + { + data.Remark = Uri.UnescapeDataString(text.Split('#')[1]); + text = text.Split('#')[0]; + } + + var parameter = System.Web.HttpUtility.ParseQueryString(text.Contains('?') ? text.Split('?')[1] : ""); + var match = System.Text.RegularExpressions.Regex.Match(text.Split('?')[0], @"^wireguard://(?.+)@(?.+):(?\d+)$", System.Text.RegularExpressions.RegexOptions.IgnoreCase); + if (!match.Success) + throw new FormatException(); + + data.PrivateKey = Uri.UnescapeDataString(match.Groups["key"].Value); + data.Hostname = match.Groups["server"].Value; + data.Port = ushort.Parse(match.Groups["port"].Value); + data.PeerPublicKey = parameter.Get("publickey") ?? string.Empty; + data.LocalAddresses = parameter.Get("address") ?? data.LocalAddresses; + data.PreSharedKey = parameter.Get("presharedkey"); + if (int.TryParse(parameter.Get("mtu"), out var mtu)) + data.MTU = mtu; + + return new[] { data }; + } + + public bool CheckServer(Server s) + { + return true; + } +} \ No newline at end of file diff --git a/Netch/Services/ModeService.cs b/Netrix/Services/ModeService.cs similarity index 92% rename from Netch/Services/ModeService.cs rename to Netrix/Services/ModeService.cs index 294ef0b..34136c4 100644 --- a/Netch/Services/ModeService.cs +++ b/Netrix/Services/ModeService.cs @@ -1,16 +1,16 @@ -using Netch.Controllers; -using Netch.Interfaces; -using Netch.Models; -using Netch.Models.Modes; -using Netch.Utils; +using Netrix.Controllers; +using Netrix.Interfaces; +using Netrix.Models; +using Netrix.Models.Modes; +using Netrix.Utils; -namespace Netch.Services; +namespace Netrix.Services; public class ModeService { public static readonly ModeService Instance = new(); - public string ModeDirectoryFullName => Path.Combine(Global.NetchDir, "mode"); + public string ModeDirectoryFullName => Path.Combine(Global.NetrixDir, "mode"); public string GetRelativePath(string fullName) { @@ -108,6 +108,8 @@ public static IModeController GetModeControllerByType(ModeType type, out ushort? return new TUNController(); case ModeType.ShareMode: return new PcapController(); + case ModeType.WebMode: + return new WebController(); default: Log.Error("Unknown Mode Type \"{Type}\"", (int)type); throw new MessageException("Unknown Mode Type"); diff --git a/Netrix/Services/UpdateSignature.cs b/Netrix/Services/UpdateSignature.cs new file mode 100644 index 0000000..d21c2fe --- /dev/null +++ b/Netrix/Services/UpdateSignature.cs @@ -0,0 +1,33 @@ +using System.Security.Cryptography; + +namespace Netrix.Services; + +/// +/// The release hash and the release file come from the same GitHub release, so a hash alone proves nothing. +/// Releases are also signed with a key that is not on GitHub; only the public half is in the app. +/// +public static class UpdateSignature +{ + /// + /// ECDSA P-256 public key (SubjectPublicKeyInfo, base64). The private half is the GitHub secret UPDATE_SIGNING_KEY, see sign.ps1. + /// + public const string PublicKey = "MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAExF1w9Fx4qd8sO2il0v6SxraifQGkZJfMjbAnB5Hherfi5lXcjRAj5N2WGIKR1+lYMy9IkmGynO/rwxiaga2Imw=="; + + /// the downloaded archive + /// contents of the release's "<archive>.sig" asset: base64 IEEE P1363 signature + public static bool Verify(string file, string signature, string publicKey = PublicKey) + { + try + { + using var ecdsa = ECDsa.Create(); + ecdsa.ImportSubjectPublicKeyInfo(Convert.FromBase64String(publicKey), out _); + + using var stream = File.OpenRead(file); + return ecdsa.VerifyData(stream, Convert.FromBase64String(signature.Trim()), HashAlgorithmName.SHA256, DSASignatureFormat.IeeeP1363FixedFieldConcatenation); + } + catch (Exception e) when (e is FormatException or CryptographicException or ArgumentException) + { + return false; + } + } +} diff --git a/Netch/Services/Updater.cs b/Netrix/Services/Updater.cs similarity index 75% rename from Netch/Services/Updater.cs rename to Netrix/Services/Updater.cs index 8244a6a..4e2cf70 100644 --- a/Netch/Services/Updater.cs +++ b/Netrix/Services/Updater.cs @@ -1,11 +1,11 @@ using System.Collections.Immutable; using System.Diagnostics; using System.Text; -using Netch.Models; -using Netch.Properties; -using Netch.Utils; +using Netrix.Models; +using Netrix.Properties; +using Netrix.Utils; -namespace Netch.Services; +namespace Netrix.Services; public class Updater { @@ -36,20 +36,47 @@ internal void ApplyUpdate() if ((exitCode = Extract(extractPath)) != 0) throw new MessageException(i18N.Translate($"7za unexpectedly exited. ({exitCode})")); - // update archive file must have a top-level directory "Netch" - var updateDirectory = Path.Combine(extractPath, "Netch"); + // update archive file must have a top-level directory "Netrix" + var updateDirectory = Path.Combine(extractPath, "Netrix"); if (!Directory.Exists(updateDirectory)) throw new MessageException(i18N.Translate("Update file top-level directory not exist")); - // {_tempDirectory}/extract/Netch/Netch.exe - var updateMainProgramFilePath = Path.Combine(updateDirectory, "Netch.exe"); + // {_tempDirectory}/extract/Netrix/Netrix.exe + var updateMainProgramFilePath = Path.Combine(updateDirectory, "Netrix.exe"); if (!File.Exists(updateMainProgramFilePath)) throw new MessageException(i18N.Translate($"Update file main program not exist")); - MarkFilesOld(); + try + { + MarkFilesOld(); - // move {tempDirectory}\extract\Netch to install folder - MoveFilesOver(updateDirectory, InstallDirectory); + // move {tempDirectory}\extract\Netrix to install folder + MoveFilesOver(updateDirectory, InstallDirectory); + } + catch (Exception e) + { + Log.Error(e, "Apply update failed, rolling back"); + RollbackOld(); + throw new MessageException(i18N.Translate("Update failed, the previous version was restored") + $"\n{e.Message}"); + } + } + + /// + /// Put every "*.old" file back over whatever replaced it + /// + private void RollbackOld() + { + foreach (var old in Directory.GetFiles(InstallDirectory, "*.old", SearchOption.AllDirectories)) + try + { + var original = old[..^".old".Length]; + File.Delete(original); + File.Move(old, original); + } + catch (Exception e) + { + Log.Error(e, "failed to restore \"{File}\"", old); + } } private void MarkFilesOld() diff --git a/Netch/Utils/Bandwidth.cs b/Netrix/Utils/Bandwidth.cs similarity index 80% rename from Netch/Utils/Bandwidth.cs rename to Netrix/Utils/Bandwidth.cs index c23a5cd..1d0d439 100644 --- a/Netch/Utils/Bandwidth.cs +++ b/Netrix/Utils/Bandwidth.cs @@ -2,10 +2,10 @@ using Microsoft.Diagnostics.Tracing.Parsers; using Microsoft.Diagnostics.Tracing.Session; using Microsoft.VisualStudio.Threading; -using Netch.Controllers; -using Netch.Enums; +using Netrix.Controllers; +using Netrix.Enums; -namespace Netch.Utils; +namespace Netrix.Utils; public static class Bandwidth { @@ -15,10 +15,10 @@ public static class Bandwidth private static readonly string[] Suffix = { "B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB" }; /// - /// 计算流量 + /// Format a traffic amount /// /// - /// 带单位的流量字符串 + /// Traffic string with unit public static string Compute(ulong d) { const double step = 1024.00; @@ -38,13 +38,27 @@ public static string Compute(ulong d) } /// - /// 根据程序名统计流量 + /// Count traffic by program name /// public static void NetTraffic() { if (!Flags.IsWindows10Upper) return; + if (MainController.ModeController is TUNController) + { + // tun2socks counts what really crossed the tunnel (no ETW trace, no PID filter) + Global.MainForm.BandwidthState(true); + + while (Global.MainForm.State != State.Stopped) + { + Thread.Sleep(1000); + Global.MainForm.OnBandwidthUpdated(Interops.tun2socks.tun_getDL(), Interops.tun2socks.tun_getUP()); + } + + return; + } + var counterLock = new object(); //int sent = 0; @@ -87,8 +101,8 @@ public static void NetTraffic() tSession = new TraceEventSession("KernelAndClrEventsSession"); tSession.EnableKernelProvider(KernelTraceEventParser.Keywords.NetworkTCPIP); - //这玩意儿上传和下载得到的data是一样的:) - //所以暂时没办法区分上传下载流量 + //Upload and download report the same data here :) + //so upload and download traffic cannot be told apart for now tSession.Source.Kernel.TcpIpRecv += data => { if (pidHastSet.Contains(data.ProcessID)) diff --git a/Netch/Utils/Configuration.cs b/Netrix/Utils/Configuration.cs similarity index 96% rename from Netch/Utils/Configuration.cs rename to Netrix/Utils/Configuration.cs index 5f94799..64134e5 100644 --- a/Netch/Utils/Configuration.cs +++ b/Netrix/Utils/Configuration.cs @@ -1,17 +1,17 @@ using System.Text.Json; using System.Text.Json.Serialization; using Microsoft.VisualStudio.Threading; -using Netch.JsonConverter; -using Netch.Models; +using Netrix.JsonConverter; +using Netrix.Models; -namespace Netch.Utils; +namespace Netrix.Utils; public static class Configuration { /// - /// 数据目录 + /// Data directory /// - public static string DataDirectoryFullName => Path.Combine(Global.NetchDir, "data"); + public static string DataDirectoryFullName => Path.Combine(Global.NetrixDir, "data"); public static string FileFullName => Path.Combine(DataDirectoryFullName, FileName); @@ -91,7 +91,7 @@ private static void CheckSetting(Setting settings) } /// - /// 保存配置 + /// Save settings /// public static async Task SaveAsync() { diff --git a/Netch/Utils/DelayTestHelper.cs b/Netrix/Utils/DelayTestHelper.cs similarity index 86% rename from Netch/Utils/DelayTestHelper.cs rename to Netrix/Utils/DelayTestHelper.cs index 4a24bc4..761ea8d 100644 --- a/Netch/Utils/DelayTestHelper.cs +++ b/Netrix/Utils/DelayTestHelper.cs @@ -1,8 +1,8 @@ using Microsoft.VisualStudio.Threading; -using Netch.Models; +using Netrix.Models; using Timer = System.Timers.Timer; -namespace Netch.Utils; +namespace Netrix.Utils; public static class DelayTestHelper { @@ -24,7 +24,12 @@ static DelayTestHelper() AutoReset = true }; - Timer.Elapsed += (_, _) => PerformTestAsync().Forget(); + // nobody sees the delays while the window is in the tray or minimized + Timer.Elapsed += (_, _) => + { + if (Global.MainForm.Visible && Global.MainForm.WindowState != FormWindowState.Minimized) + PerformTestAsync().Forget(); + }; } public static bool Enabled diff --git a/Netch/Utils/DnsUtils.cs b/Netrix/Utils/DnsUtils.cs similarity index 98% rename from Netch/Utils/DnsUtils.cs rename to Netrix/Utils/DnsUtils.cs index 67631d1..93e08fb 100644 --- a/Netch/Utils/DnsUtils.cs +++ b/Netrix/Utils/DnsUtils.cs @@ -3,14 +3,14 @@ using System.Net.Sockets; using Microsoft.VisualStudio.Threading; -namespace Netch.Utils; +namespace Netrix.Utils; public static class DnsUtils { private static readonly AsyncSemaphore Lock = new(1); /// - /// 缓存 + /// Cache /// private static readonly Hashtable Cache = new(); private static readonly Hashtable Cache6 = new(); diff --git a/Netch/Utils/Firewall.cs b/Netrix/Utils/Firewall.cs similarity index 62% rename from Netch/Utils/Firewall.cs rename to Netrix/Utils/Firewall.cs index a02b0c4..d040974 100644 --- a/Netch/Utils/Firewall.cs +++ b/Netrix/Utils/Firewall.cs @@ -1,16 +1,16 @@ using WindowsFirewallHelper; using WindowsFirewallHelper.FirewallRules; -namespace Netch.Utils; +namespace Netrix.Utils; public static class Firewall { - private const string Netch = "Netch"; + private const string Netrix = "Netrix"; /// - /// Netch 自带程序添加防火墙 + /// Add firewall rules for Netrix's bundled programs /// - public static void AddNetchFwRules() + public static void AddNetrixFwRules() { if (!FirewallWAS.IsLocallySupported) { @@ -20,28 +20,28 @@ public static void AddNetchFwRules() try { - var rule = FirewallManager.Instance.Rules.FirstOrDefault(r => r.Name == Netch); + var rule = FirewallManager.Instance.Rules.FirstOrDefault(r => r.Name == Netrix); if (rule != null) { - if (rule.ApplicationName.StartsWith(Global.NetchDir)) + if (rule.ApplicationName.StartsWith(Global.NetrixDir)) return; - RemoveNetchFwRules(); + RemoveNetrixFwRules(); } - foreach (var path in Directory.GetFiles(Global.NetchDir, "*.exe", SearchOption.AllDirectories)) - AddFwRule(Netch, path); + foreach (var path in Directory.GetFiles(Global.NetrixDir, "*.exe", SearchOption.AllDirectories)) + AddFwRule(Netrix, path); } catch (Exception e) { - Log.Warning(e, "Create Netch Firewall rules error"); + Log.Warning(e, "Create Netrix Firewall rules error"); } } /// - /// 清除防火墙规则 (Netch 自带程序) + /// Remove the firewall rules (Netrix's bundled programs) /// - public static void RemoveNetchFwRules() + public static void RemoveNetrixFwRules() { if (!FirewallWAS.IsLocallySupported) return; @@ -49,16 +49,16 @@ public static void RemoveNetchFwRules() try { foreach (var rule in FirewallManager.Instance.Rules.Where(r - => r.ApplicationName?.StartsWith(Global.NetchDir, StringComparison.OrdinalIgnoreCase) ?? r.Name == Netch)) + => r.ApplicationName?.StartsWith(Global.NetrixDir, StringComparison.OrdinalIgnoreCase) ?? r.Name == Netrix)) FirewallManager.Instance.Rules.Remove(rule); } catch (Exception e) { - Log.Warning(e, "Remove Netch Firewall rules error"); + Log.Warning(e, "Remove Netrix Firewall rules error"); } } - #region 封装 + #region Wrappers private static void AddFwRule(string ruleName, string exeFullPath) { diff --git a/Netch/Utils/ModeHelper.cs b/Netrix/Utils/ModeHelper.cs similarity index 95% rename from Netch/Utils/ModeHelper.cs rename to Netrix/Utils/ModeHelper.cs index 341a4cf..a218e60 100644 --- a/Netch/Utils/ModeHelper.cs +++ b/Netrix/Utils/ModeHelper.cs @@ -1,13 +1,13 @@ using System.Text.Json; using System.Text.Json.Serialization; -using Netch.JsonConverter; -using Netch.Models.Modes; -using Netch.Models.Modes.ProcessMode; -using Netch.Models.Modes.ShareMode; -using Netch.Models.Modes.TunMode; -using Netch.Services; - -namespace Netch.Utils; +using Netrix.JsonConverter; +using Netrix.Models.Modes; +using Netrix.Models.Modes.ProcessMode; +using Netrix.Models.Modes.ShareMode; +using Netrix.Models.Modes.TunMode; +using Netrix.Services; + +namespace Netrix.Utils; public static class ModeHelper { diff --git a/Netch/Utils/NetworkInterfaceUtils.cs b/Netrix/Utils/NetworkInterfaceUtils.cs similarity index 73% rename from Netch/Utils/NetworkInterfaceUtils.cs rename to Netrix/Utils/NetworkInterfaceUtils.cs index 102f3ef..c4cbd8a 100644 --- a/Netch/Utils/NetworkInterfaceUtils.cs +++ b/Netrix/Utils/NetworkInterfaceUtils.cs @@ -1,12 +1,15 @@ -using System.Diagnostics; +using System.ComponentModel; +using Windows.Win32.NetworkManagement.IpHelper; +using Windows.Win32.Networking.WinSock; +using System.Diagnostics; using System.Management; using System.Net; using System.Net.NetworkInformation; using System.Net.Sockets; using Windows.Win32; -using Netch.Models; +using Netrix.Models; -namespace Netch.Utils; +namespace Netrix.Utils; public static class NetworkInterfaceUtils { @@ -25,7 +28,7 @@ public static NetworkInterface GetBest(AddressFamily addressFamily = AddressFami } if (PInvoke.GetBestRoute(BitConverter.ToUInt32(IPAddress.Parse(ipAddress).GetAddressBytes(), 0), 0, out var route) != 0) - throw new MessageException("GetBestRoute 搜索失败"); + throw new MessageException("GetBestRoute found no route"); return Get((int)route.dwForwardIfIndex); } @@ -40,17 +43,23 @@ public static NetworkInterface Get(Func expression) return NetworkInterface.GetAllNetworkInterfaces().First(expression); } + /// IPv4 interface metric through the IP Helper API (what `netsh interface ip set interface` does); null = automatic. public static void SetInterfaceMetric(int interfaceIndex, int? metric = null) { - var arguments = $"interface ip set interface {interfaceIndex} "; + var row = new MIB_IPINTERFACE_ROW { Family = ADDRESS_FAMILY.AF_INET, InterfaceIndex = (uint)interfaceIndex }; + var error = PInvoke.GetIpInterfaceEntry(ref row); + if (error != 0) + throw new Win32Exception((int)error); + + // Set fails on IPv4 rows with a non-zero SitePrefixLength + row.SitePrefixLength = 0; + row.UseAutomaticMetric = metric == null; if (metric != null) - arguments += $"metric={metric} "; + row.Metric = (uint)metric; - Process.Start(new ProcessStartInfo("netsh.exe", arguments) - { - UseShellExecute = false, - Verb = "runas" - })!.WaitForExit(); + error = PInvoke.SetIpInterfaceEntry(ref row); + if (error != 0) + throw new Win32Exception((int)error); } } diff --git a/Netch/Utils/PortHelper.cs b/Netrix/Utils/PortHelper.cs similarity index 82% rename from Netch/Utils/PortHelper.cs rename to Netrix/Utils/PortHelper.cs index a77f2cf..3f2e821 100644 --- a/Netch/Utils/PortHelper.cs +++ b/Netrix/Utils/PortHelper.cs @@ -5,9 +5,9 @@ using System.Runtime.InteropServices; using Windows.Win32; using Windows.Win32.NetworkManagement.IpHelper; -using Netch.Models; +using Netrix.Models; -namespace Netch.Utils; +namespace Netrix.Utils; public static class PortHelper { @@ -43,21 +43,27 @@ internal static IEnumerable GetProcessByUsedTcpPort(ushort port, Addres uint err; uint size = 0; PInvoke.GetExtendedTcpTable(default, ref size, false, (uint)inet, TCP_TABLE_CLASS.TCP_TABLE_OWNER_PID_LISTENER, 0); // get size - var tcpTable = (MIB_TCPTABLE_OWNER_PID*)Marshal.AllocHGlobal((int)size); + var buffer = new byte[size]; - if ((err = PInvoke.GetExtendedTcpTable(tcpTable, ref size, false, (uint)inet, TCP_TABLE_CLASS.TCP_TABLE_OWNER_PID_LISTENER, 0)) != - 0) + if ((err = PInvoke.GetExtendedTcpTable(buffer, ref size, false, (uint)inet, TCP_TABLE_CLASS.TCP_TABLE_OWNER_PID_LISTENER, 0)) != 0) throw new Win32Exception((int)err); - for (var i = 0; i < tcpTable -> dwNumEntries; i++) + fixed (byte* p = buffer) { - var row = tcpTable -> table.ReadOnlyItemRef(i); + var tcpTable = (MIB_TCPTABLE_OWNER_PID*)p; + // rows follow the dwNumEntries header field + var rows = (MIB_TCPROW_OWNER_PID*)(p + sizeof(uint)); - if (row.dwOwningPid is 0 or 4) - continue; + for (var i = 0; i < tcpTable -> dwNumEntries; i++) + { + var row = rows[i]; - if (PInvoke.ntohs((ushort)row.dwLocalPort) == port) - process.Add(Process.GetProcessById((int)row.dwOwningPid)); + if (row.dwOwningPid is 0 or 4) + continue; + + if (PInvoke.ntohs((ushort)row.dwLocalPort) == port) + process.Add(Process.GetProcessById((int)row.dwOwningPid)); + } } } @@ -101,11 +107,11 @@ private static void GetReservedPortRange(PortType portType, ref List - /// 指定类型的端口是否已经被使用了 + /// Whether a port of the given type is already in use /// - /// 端口 - /// 检查端口类型 - /// 是否被占用 + /// Port + /// Port type to check + /// Whether it is in use public static void CheckPort(ushort port, PortType type = PortType.Both) { switch (type) @@ -145,7 +151,7 @@ private static void CheckPortInUse(ushort port, PortType type) } /// - /// 检查端口是否是保留端口 + /// Check whether a port is reserved /// private static void CheckPortReserved(ushort port, PortType type) { @@ -193,7 +199,7 @@ public static ushort GetAvailablePort(PortType portType = PortType.Both) } /// -/// 检查端口类型 +/// Port type to check /// [Flags] public enum PortType diff --git a/Netch/Utils/RouteUtils.cs b/Netrix/Utils/RouteUtils.cs similarity index 89% rename from Netch/Utils/RouteUtils.cs rename to Netrix/Utils/RouteUtils.cs index b93a1b6..ef91ed4 100644 --- a/Netch/Utils/RouteUtils.cs +++ b/Netrix/Utils/RouteUtils.cs @@ -1,9 +1,9 @@ using System.Diagnostics.CodeAnalysis; using System.Net.Sockets; -using Netch.Interops; -using Netch.Models; +using Netrix.Interops; +using Netrix.Models; -namespace Netch.Utils; +namespace Netrix.Utils; // #define DEBUG_TUN public static class RouteUtils @@ -25,9 +25,9 @@ public static bool CreateRouteFill(NetRoute template, string rule, int? metric = return CreateRoute(template.FillTemplate(network, (byte)cidr, metric)); } - public static bool CreateRoute(NetRoute o) + public static bool CreateRoute(NetRoute o, AddressFamily inet = AddressFamily.InterNetwork) { - var Result = RouteHelper.CreateRoute(AddressFamily.InterNetwork, o.Network, o.Cidr, o.Gateway, (ulong)o.InterfaceIndex, o.Metric); + var Result = RouteHelper.CreateRoute(inet, o.Network, o.Cidr, o.Gateway, (ulong)o.InterfaceIndex, o.Metric); #if DEBUG_TUN Log.Verbose("CreateRoute {InterNetwork} {Address} {Cidr} {Gateway} {Interface} {Metric} Result: {Result}", diff --git a/Netch/Utils/ServerHelper.cs b/Netrix/Utils/ServerHelper.cs similarity index 95% rename from Netch/Utils/ServerHelper.cs rename to Netrix/Utils/ServerHelper.cs index 1c506ee..23e7867 100644 --- a/Netch/Utils/ServerHelper.cs +++ b/Netrix/Utils/ServerHelper.cs @@ -1,7 +1,7 @@ using System.Reflection; -using Netch.Interfaces; +using Netrix.Interfaces; -namespace Netch.Utils; +namespace Netrix.Utils; public static class ServerHelper { diff --git a/Netch/Utils/ShareLink.cs b/Netrix/Utils/ShareLink.cs similarity index 83% rename from Netch/Utils/ShareLink.cs rename to Netrix/Utils/ShareLink.cs index 6d2a953..0b604bb 100644 --- a/Netch/Utils/ShareLink.cs +++ b/Netrix/Utils/ShareLink.cs @@ -1,10 +1,10 @@ using System.Text; using System.Text.Json; -using Netch.JsonConverter; -using Netch.Models; -using Netch.Servers; +using Netrix.JsonConverter; +using Netrix.Models; +using Netrix.Servers; -namespace Netch.Utils; +namespace Netrix.Utils; public static class ShareLink { @@ -67,11 +67,11 @@ private static IEnumerable ParseUri(in string text) if (text.StartsWith("tg://socks?") || text.StartsWith("https://t.me/socks?")) { - list.AddRange(ServerHelper.GetUtilByTypeName("Socks5").ParseUri(text)); + list.AddRange(ServerHelper.GetUtilByTypeName("SOCKS").ParseUri(text)); } - else if (text.StartsWith("Netch://")) + else if (text.StartsWith("Netrix://")) { - list.Add(ParseNetchUri(text)); + list.Add(ParseNetrixUri(text)); } else { @@ -98,16 +98,16 @@ public static string GetUriScheme(string text) return text.Substring(0, endIndex); } - private static Server ParseNetchUri(string text) + private static Server ParseNetrixUri(string text) { text = URLSafeBase64Decode(text.Substring(8)); - var NetchLink = JsonSerializer.Deserialize(text); + var NetrixLink = JsonSerializer.Deserialize(text); - if (string.IsNullOrEmpty(NetchLink.GetProperty("Hostname").GetString())) + if (string.IsNullOrEmpty(NetrixLink.GetProperty("Hostname").GetString())) throw new FormatException(); - if (!ushort.TryParse(NetchLink.GetProperty("Port").GetString(), out _)) + if (!ushort.TryParse(NetrixLink.GetProperty("Port").GetString(), out _)) throw new FormatException(); return JsonSerializer.Deserialize(text, @@ -117,20 +117,20 @@ private static Server ParseNetchUri(string text) })!; } - public static string GetNetchLink(Server s) + public static string GetNetrixLink(Server s) { var jsonSerializerOptions = Global.NewCustomJsonSerializerOptions(); jsonSerializerOptions.WriteIndented = false; - return "Netch://" + URLSafeBase64Encode(JsonSerializer.Serialize(s, jsonSerializerOptions)); + return "Netrix://" + URLSafeBase64Encode(JsonSerializer.Serialize(s, jsonSerializerOptions)); } #region Utils /// - /// URL 传输安全的 Base64 解码 + /// URL-safe Base64 decode /// - /// 需要解码的字符串 - /// 解码后的字符串 + /// String to decode + /// Decoded string public static string URLSafeBase64Decode(string text) { return Encoding.UTF8.GetString( @@ -138,10 +138,10 @@ public static string URLSafeBase64Decode(string text) } /// - /// URL 传输安全的 Base64 加密 + /// URL-safe Base64 encode /// - /// 需要加密的字符串 - /// 加密后的字符串 + /// String to encode + /// Encoded string public static string URLSafeBase64Encode(string text) { return Convert.ToBase64String(Encoding.UTF8.GetBytes(text)).Replace("+", "-").Replace("/", "_").Replace("=", ""); diff --git a/Netch/Utils/Socks5ServerTestUtils.cs b/Netrix/Utils/Socks5ServerTestUtils.cs similarity index 53% rename from Netch/Utils/Socks5ServerTestUtils.cs rename to Netrix/Utils/Socks5ServerTestUtils.cs index 1492a32..ba3e04c 100644 --- a/Netch/Utils/Socks5ServerTestUtils.cs +++ b/Netrix/Utils/Socks5ServerTestUtils.cs @@ -1,14 +1,17 @@ using System.Diagnostics; using System.Net; -using Netch.Models; -using Netch.Servers; +using System.Net.Sockets; +using System.Text; +using Netrix.Models; +using Netrix.Servers; +using Serilog; using Socks5.Models; using STUN.Client; using STUN.Enums; using STUN.Proxy; using STUN.StunResult; -namespace Netch.Utils; +namespace Netrix.Utils; public static class Socks5ServerTestUtils { @@ -35,7 +38,7 @@ public static async Task DiscoveryNatTypeAsync(Socks5Server s return new NatTypeTestResult { Result = "Wrong STUN Server!" }; } - using IUdpProxy proxy = ProxyFactory.CreateProxy(ProxyType.Socks5, new IPEndPoint(IPAddress.Loopback, 0), socks5Option); + using IUdpProxy proxy = new Socks5UdpProxy(new IPEndPoint(IPAddress.Loopback, 0), socks5Option); using var client = new StunClient5389UDP(new IPEndPoint(ip, port), local, proxy); await client.ConnectProxyAsync(ctx); @@ -80,6 +83,59 @@ private static string GetSimpleResult(StunResult5389 res) } } + /// + /// True if the SOCKS5 server can reach an IPv6 host and data comes back. A server without IPv6 egress accepts the + /// connection and then stalls, so routing IPv6 into the tunnel would hang every dual-stack site. + /// + public static async Task IPv6WorksAsync(Socks5Server socks5, CancellationToken ctx = default) + { + try + { + using var cts = CancellationTokenSource.CreateLinkedTokenSource(ctx); + cts.CancelAfter(TimeSpan.FromSeconds(5)); + var token = cts.Token; + + using var tcp = new TcpClient(); + await tcp.ConnectAsync(await DnsUtils.LookupAsync(socks5.Hostname) ?? throw new InvalidOperationException(), socks5.Port, token); + var s = tcp.GetStream(); + var buf = new byte[262]; + + // greeting: no auth, or username/password when the server has it + await s.WriteAsync(socks5.Auth() ? new byte[] { 5, 1, 2 } : new byte[] { 5, 1, 0 }, token); + await s.ReadExactlyAsync(buf.AsMemory(0, 2), token); + if (buf[0] != 5 || buf[1] == 0xFF) + return false; + + if (buf[1] == 2) + { + var user = Encoding.UTF8.GetBytes(socks5.Username ?? ""); + var pass = Encoding.UTF8.GetBytes(socks5.Password ?? ""); + await s.WriteAsync(new byte[] { 1, (byte)user.Length }.Concat(user).Append((byte)pass.Length).Concat(pass).ToArray(), token); + await s.ReadExactlyAsync(buf.AsMemory(0, 2), token); + if (buf[1] != 0) + return false; + } + + // CONNECT [2606:4700:4700::1111]:80 (Cloudflare), then ask for headers + var connect = new byte[] { 5, 1, 0, 4 }.Concat(IPAddress.Parse("2606:4700:4700::1111").GetAddressBytes()).Concat(new byte[] { 0, 80 }).ToArray(); + await s.WriteAsync(connect, token); + await s.ReadExactlyAsync(buf.AsMemory(0, 10), token); // reply header, IPv4 bound address + if (buf[1] != 0) + return false; + + if (buf[3] == 4) + await s.ReadExactlyAsync(buf.AsMemory(0, 12), token); // IPv6 bound address is 12 bytes longer + + await s.WriteAsync(Encoding.ASCII.GetBytes("HEAD / HTTP/1.0\r\nHost: one.one.one.one\r\n\r\n"), token); + return await s.ReadAsync(buf.AsMemory(), token) > 0; + } + catch (Exception e) when (e is not OutOfMemoryException) + { + Log.Debug(e, "IPv6 probe failed"); + return false; + } + } + public static async Task HttpConnectAsync(Socks5Server socks5, CancellationToken ctx) { var socks5Option = new Socks5CreateOption diff --git a/Netch/Utils/StringExtension.cs b/Netrix/Utils/StringExtension.cs similarity index 99% rename from Netch/Utils/StringExtension.cs rename to Netrix/Utils/StringExtension.cs index 22dca3c..1f23f03 100644 --- a/Netch/Utils/StringExtension.cs +++ b/Netrix/Utils/StringExtension.cs @@ -1,7 +1,7 @@ using System.Security.Cryptography; using System.Text; -namespace Netch.Utils; +namespace Netrix.Utils; public static class StringExtension { diff --git a/Netch/Utils/SubscriptionUtil.cs b/Netrix/Utils/SubscriptionUtil.cs similarity index 81% rename from Netch/Utils/SubscriptionUtil.cs rename to Netrix/Utils/SubscriptionUtil.cs index 910af88..80d1738 100644 --- a/Netch/Utils/SubscriptionUtil.cs +++ b/Netrix/Utils/SubscriptionUtil.cs @@ -1,7 +1,7 @@ using System.Net; -using Netch.Models; +using Netrix.Models; -namespace Netch.Utils; +namespace Netrix.Utils; public static class SubscriptionUtil { @@ -19,17 +19,11 @@ private static async Task UpdateServerCoreAsync(Subscription item, string? proxy if (!item.Enable) return; - var request = WebUtil.CreateRequest(item.Link); - - if (!string.IsNullOrEmpty(item.UserAgent)) - request.UserAgent = item.UserAgent; - - if (!string.IsNullOrEmpty(proxyServer)) - request.Proxy = new WebProxy(proxyServer); + var request = WebUtil.CreateRequest(item.Link, userAgent: item.UserAgent); List servers; - var (code, result) = await WebUtil.DownloadStringAsync(request); + var (code, result) = await WebUtil.DownloadStringAsync(request, proxyServer: proxyServer); if (code == HttpStatusCode.OK) servers = ShareLink.ParseText(result); else diff --git a/Netch/Utils/SystemInfo.cs b/Netrix/Utils/SystemInfo.cs similarity index 98% rename from Netch/Utils/SystemInfo.cs rename to Netrix/Utils/SystemInfo.cs index c7ede64..c4ddc81 100644 --- a/Netch/Utils/SystemInfo.cs +++ b/Netrix/Utils/SystemInfo.cs @@ -1,7 +1,7 @@ using System.Diagnostics; using System.Management; -namespace Netch.Utils; +namespace Netrix.Utils; public static class SystemInfo { diff --git a/Netch/Utils/Utils.cs b/Netrix/Utils/Utils.cs similarity index 95% rename from Netch/Utils/Utils.cs rename to Netrix/Utils/Utils.cs index c4609d0..af92100 100644 --- a/Netch/Utils/Utils.cs +++ b/Netrix/Utils/Utils.cs @@ -8,7 +8,7 @@ using Microsoft.Win32.TaskScheduler; using Task = System.Threading.Tasks.Task; -namespace Netch.Utils; +namespace Netrix.Utils; public static class Utils { @@ -181,9 +181,9 @@ public static void ComponentIterator(in Component component, in Action task.Name == TaskName); @@ -194,12 +194,12 @@ public static void RegisterNetchStartupItem() var td = TaskService.Instance.NewTask(); - td.RegistrationInfo.Author = "Netch"; - td.RegistrationInfo.Description = "Netch run at startup."; + td.RegistrationInfo.Author = "Netrix"; + td.RegistrationInfo.Description = "Netrix run at startup."; td.Principal.RunLevel = TaskRunLevel.Highest; td.Triggers.Add(new LogonTrigger()); - td.Actions.Add(new ExecAction(Global.NetchExecutable)); + td.Actions.Add(new ExecAction(Global.NetrixExecutable)); td.Settings.ExecutionTimeLimit = TimeSpan.Zero; td.Settings.DisallowStartIfOnBatteries = false; @@ -209,7 +209,7 @@ public static void RegisterNetchStartupItem() td.Settings.RunOnlyIfIdle = false; td.Settings.Compatibility = TaskCompatibility.V2_1; - TaskService.Instance.RootFolder.RegisterTaskDefinition("Netch Startup", td); + TaskService.Instance.RootFolder.RegisterTaskDefinition("Netrix Startup", td); } else { diff --git a/Netrix/Utils/WebUtil.cs b/Netrix/Utils/WebUtil.cs new file mode 100644 index 0000000..11d28a9 --- /dev/null +++ b/Netrix/Utils/WebUtil.cs @@ -0,0 +1,93 @@ +using System.Net; +using System.Text; +using Microsoft.VisualStudio.Threading; + +namespace Netrix.Utils; + +public static class WebUtil +{ + public const string DefaultUserAgent = + @"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36 Edg/94.0.992.31"; + + private static readonly HttpRequestOptionsKey TimeoutKey = new("Netrix.Timeout"); + + // system proxy by default, same as WebRequest + private static readonly HttpClient Client = new() { Timeout = Timeout.InfiniteTimeSpan }; + + private static int DefaultGetTimeout => Global.Settings.RequestTimeout; + + public static HttpRequestMessage CreateRequest(string url, int? timeout = null, string? userAgent = null) + { + var req = new HttpRequestMessage(HttpMethod.Get, url); + req.Headers.TryAddWithoutValidation("User-Agent", string.IsNullOrWhiteSpace(userAgent) ? DefaultUserAgent : userAgent); + req.Headers.TryAddWithoutValidation("Accept", "*/*"); + req.Headers.TryAddWithoutValidation("Accept-Charset", "utf-8"); + req.Options.Set(TimeoutKey, timeout ?? DefaultGetTimeout); + return req; + } + + /// + /// Throws on a non-success status (as WebRequest did) + /// + public static async Task<(HttpStatusCode, string)> DownloadStringAsync(HttpRequestMessage req, Encoding? encoding = null, string? proxyServer = null) + { + // ponytail: the timeout covers the whole transfer here (WebRequest timed out per read), fine for small text bodies + using var cts = new CancellationTokenSource(req.Options.TryGetValue(TimeoutKey, out var ms) ? ms : DefaultGetTimeout); + using var proxied = CreateProxiedClient(proxyServer); + using var response = await (proxied ?? Client).SendAsync(req, HttpCompletionOption.ResponseHeadersRead, cts.Token); + response.EnsureSuccessStatusCode(); + + await using var input = await response.Content.ReadAsStreamAsync(cts.Token); + using var reader = new StreamReader(input, encoding ?? Encoding.UTF8); + return (response.StatusCode, await reader.ReadToEndAsync(cts.Token)); + } + + public static Task DownloadFileAsync(string address, string fileFullPath, IProgress? progress = null) + { + return DownloadFileAsync(CreateRequest(address), fileFullPath, progress); + } + + public static async Task DownloadFileAsync(HttpRequestMessage req, string fileFullPath, IProgress? progress) + { + var fileStream = new FileStream(fileFullPath, FileMode.Create, FileAccess.Write, FileShare.None, 4096, true); + await using (fileStream) + { + // timeout only limits waiting for the response headers; the body may take as long as it needs + using var cts = new CancellationTokenSource(req.Options.TryGetValue(TimeoutKey, out var ms) ? ms : DefaultGetTimeout); + using var response = await Client.SendAsync(req, HttpCompletionOption.ResponseHeadersRead, cts.Token); + response.EnsureSuccessStatusCode(); + + await using var input = await response.Content.ReadAsStreamAsync(); + using var downloadTask = input.CopyToAsync(fileStream); + if (progress != null && response.Content.Headers.ContentLength is > 0 and var total) + ReportProgressAsync(total, downloadTask, fileStream, progress, 200).Forget(); + + await downloadTask; + } + + progress?.Report(100); + } + + private static HttpClient? CreateProxiedClient(string? proxyServer) + { + return string.IsNullOrEmpty(proxyServer) + ? null + : new HttpClient(new HttpClientHandler { Proxy = new WebProxy(proxyServer) }, true) { Timeout = Timeout.InfiniteTimeSpan }; + } + + private static async Task ReportProgressAsync(long total, IAsyncResult downloadTask, Stream stream, IProgress progress, int interval) + { + var n = 0; + while (!downloadTask.IsCompleted) + { + var n1 = (int)((double)stream.Length / total * 100); + if (n != n1) + { + n = n1; + progress.Report(n); + } + + await Task.Delay(interval); + } + } +} diff --git a/Netch/Utils/i18N.cs b/Netrix/Utils/i18N.cs similarity index 93% rename from Netch/Utils/i18N.cs rename to Netrix/Utils/i18N.cs index 0946860..e607976 100644 --- a/Netch/Utils/i18N.cs +++ b/Netrix/Utils/i18N.cs @@ -2,9 +2,9 @@ using System.Globalization; using System.Text; using System.Text.Json; -using Netch.Properties; +using Netrix.Properties; -namespace Netch.Utils; +namespace Netrix.Utils; public static class i18N { @@ -14,16 +14,16 @@ static i18N() } /// - /// 数据 + /// Data /// public static Hashtable Data = new(); public static string LangCode { get; private set; } = "en-US"; /// - /// 加载 + /// Load /// - /// 语言代码 + /// Language code public static void Load(string value) { string text; @@ -73,10 +73,10 @@ private static string GetLanguage(string culture) } /// - /// 翻译 + /// Translate /// - /// 需要翻译的文本 - /// 翻译完毕的文本 + /// Text to translate + /// Translated text public static string Translate(params object[] text) { var a = new StringBuilder(); diff --git a/Netch/runtimeconfig.template.json b/Netrix/runtimeconfig.template.json similarity index 100% rename from Netch/runtimeconfig.template.json rename to Netrix/runtimeconfig.template.json diff --git a/Other/_Archive/build.ps1 b/Other/_Archive/build.ps1 deleted file mode 100644 index eec2061..0000000 --- a/Other/_Archive/build.ps1 +++ /dev/null @@ -1 +0,0 @@ -exit 0 \ No newline at end of file diff --git a/Other/_Archive/chnip/build.ps1 b/Other/_Archive/chnip/build.ps1 deleted file mode 100644 index 07b3d4a..0000000 --- a/Other/_Archive/chnip/build.ps1 +++ /dev/null @@ -1,12 +0,0 @@ -Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -try { - Invoke-WebRequest ` - -Uri 'https://raw.githubusercontent.com/17mon/china_ip_list/master/china_ip_list.txt' ` - -OutFile '..\..\release\bin\chnip.txt' -} -catch { - exit 1 -} - -exit 0 \ No newline at end of file diff --git a/Other/_Archive/chnsite/build.ps1 b/Other/_Archive/chnsite/build.ps1 deleted file mode 100644 index be97e9d..0000000 --- a/Other/_Archive/chnsite/build.ps1 +++ /dev/null @@ -1,23 +0,0 @@ -Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -try { - Invoke-WebRequest ` - -Uri 'https://raw.githubusercontent.com/felixonmars/dnsmasq-china-list/master/accelerated-domains.china.conf' ` - -OutFile 'chnsite.txt' -} -catch { - exit 1 -} - -foreach ( $data in (Get-Content -Path 'chnsite.txt') ) { - $data = $data.Replace('server=/', '') - $data = $data.Replace('/114.114.114.114', '') - $data = $data.Trim() - - if ( $data.Length -gt 0 ) { - Add-Content -Path 'newsite.txt' -Value $data - } -} - -mv -Force 'newsite.txt' '..\..\release\bin\chnsite.txt' -exit 0 \ No newline at end of file diff --git a/Other/_Archive/cloak/build.ps1 b/Other/_Archive/cloak/build.ps1 deleted file mode 100644 index e7d4528..0000000 --- a/Other/_Archive/cloak/build.ps1 +++ /dev/null @@ -1,15 +0,0 @@ -Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -git clone https://github.com/cbeuw/Cloak -b 'v2.5.5' src -if ( -Not $? ) { - exit $lastExitCode -} -Set-Location src - -$Env:CGO_ENABLED='0' -$Env:GOROOT_FINAL='/usr' - -$Env:GOOS='windows' -$Env:GOARCH='amd64' -go build -a -trimpath -asmflags '-s -w' -ldflags '-s -w' -o '..\..\release\ck-client.exe' '.\cmd\ck-client' -exit $lastExitCode \ No newline at end of file diff --git a/Other/_Archive/dnsproxy/build.ps1 b/Other/_Archive/dnsproxy/build.ps1 deleted file mode 100644 index 43d7422..0000000 --- a/Other/_Archive/dnsproxy/build.ps1 +++ /dev/null @@ -1,15 +0,0 @@ -Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -git clone https://github.com/AdguardTeam/dnsproxy -b 'v0.39.9' src -if ( -Not $? ) { - exit $lastExitCode -} -Set-Location src - -$Env:CGO_ENABLED='0' -$Env:GOROOT_FINAL='/usr' - -$Env:GOOS='windows' -$Env:GOARCH='amd64' -go build -a -trimpath -asmflags '-s -w' -ldflags '-s -w' -o '..\..\release\dnsproxy.exe' -exit $lastExitCode \ No newline at end of file diff --git a/Other/_Archive/geoip/build.ps1 b/Other/_Archive/geoip/build.ps1 deleted file mode 100644 index cff6e65..0000000 --- a/Other/_Archive/geoip/build.ps1 +++ /dev/null @@ -1,12 +0,0 @@ -Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -try { - Invoke-WebRequest ` - -Uri 'https://github.com/v2fly/geoip/releases/latest/download/geoip.dat' ` - -OutFile '..\..\release\bin\geoip.dat' -} -catch { - exit 1 -} - -exit 0 \ No newline at end of file diff --git a/Other/_Archive/geosite/build.ps1 b/Other/_Archive/geosite/build.ps1 deleted file mode 100644 index 936f0e1..0000000 --- a/Other/_Archive/geosite/build.ps1 +++ /dev/null @@ -1,12 +0,0 @@ -Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -try { - Invoke-WebRequest ` - -Uri 'https://github.com/v2fly/domain-list-community/releases/latest/download/dlc.dat' ` - -OutFile '..\..\release\bin\geosite.dat' -} -catch { - exit 1 -} - -exit 0 \ No newline at end of file diff --git a/Other/_Archive/tun2socks/build.ps1 b/Other/_Archive/tun2socks/build.ps1 deleted file mode 100644 index 5c6cee9..0000000 --- a/Other/_Archive/tun2socks/build.ps1 +++ /dev/null @@ -1,15 +0,0 @@ -Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -git clone https://github.com/xjasonlyu/tun2socks -b 'v2.3.2' src -if ( -Not $? ) { - exit $lastExitCode -} -Set-Location src - -$Env:CGO_ENABLED='0' -$Env:GOROOT_FINAL='/usr' - -$Env:GOOS='windows' -$Env:GOARCH='amd64' -go build -a -trimpath -asmflags '-s -w' -ldflags '-s -w' -o '..\..\release\tun2socks.exe' -exit $lastExitCode \ No newline at end of file diff --git a/Other/_Archive/v2ray-core/build.ps1 b/Other/_Archive/v2ray-core/build.ps1 deleted file mode 100644 index ebf4476..0000000 --- a/Other/_Archive/v2ray-core/build.ps1 +++ /dev/null @@ -1,25 +0,0 @@ -Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -git clone https://github.com/v2fly/v2ray-core -b 'v4.43.0' src -if ( -Not $? ) { - exit $lastExitCode -} -Set-Location src - -$Env:CGO_ENABLED='0' -$Env:GOROOT_FINAL='/usr' - -$Env:GOOS='windows' -$Env:GOARCH='amd64' -go build -a -trimpath -asmflags '-s -w' -ldflags '-s -w -buildid=' -o '..\..\release\v2ray.exe' '.\main' -if ( -Not $? ) { - exit $lastExitCode -} - -go build -a -trimpath -asmflags '-s -w' -ldflags '-s -w -buildid=' -tags confonly -o '..\..\release\v2ctl.exe' '.\infra\control\main' -if ( -Not $? ) { - exit $lastExitCode -} - -go build -a -trimpath -asmflags '-s -w' -ldflags '-s -w -buildid= -H windowsgui' -o '..\..\release\wv2ray.exe' '.\main' -exit $lastExitCode \ No newline at end of file diff --git a/Other/_Archive/v2ray-plugin/build.ps1 b/Other/_Archive/v2ray-plugin/build.ps1 deleted file mode 100644 index 5e3df92..0000000 --- a/Other/_Archive/v2ray-plugin/build.ps1 +++ /dev/null @@ -1,15 +0,0 @@ -Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -git clone https://github.com/teddysun/v2ray-plugin -b 'v4.43.0' src -if ( -Not $? ) { - exit $lastExitCode -} -Set-Location src - -$Env:CGO_ENABLED='0' -$Env:GOROOT_FINAL='/usr' - -$Env:GOOS='windows' -$Env:GOARCH='amd64' -go build -a -trimpath -asmflags '-s -w' -ldflags '-s -w' -o '..\..\release\v2ray-plugin.exe' -exit $lastExitCode \ No newline at end of file diff --git a/Other/aiodns/cache.go b/Other/aiodns/cache.go new file mode 100644 index 0000000..d200caa --- /dev/null +++ b/Other/aiodns/cache.go @@ -0,0 +1,71 @@ +package main + +import ( + "fmt" + "strings" + "sync" + "time" + + "github.com/miekg/dns" +) + +const ( + maxCacheTTL = 60 * time.Second + maxCacheEntries = 4096 +) + +type cacheEntry struct { + msg *dns.Msg + exp time.Time +} + +var ( + cacheMu sync.Mutex + cache = map[string]cacheEntry{} +) + +// exchange is Client.Exchange with a response cache: each upstream query opens a new TCP/TLS +// connection, so repeats are worth answering locally. Only NOERROR answers are cached, for +// min(record TTLs, 60 s). ponytail: TTLs in cached replies are not decremented; full map flush at +// maxCacheEntries; add per-entry eviction or TTL aging if it matters. +func exchange(c *dns.Client, m *dns.Msg, addr string) (*dns.Msg, error) { + if len(m.Question) != 1 { + r, _, err := c.Exchange(m, addr) + return r, err + } + + q := m.Question[0] + do := false + if o := m.IsEdns0(); o != nil { + do = o.Do() + } + key := fmt.Sprintf("%s|%s|%d|%d|%t", addr, strings.ToLower(q.Name), q.Qtype, q.Qclass, do) + + cacheMu.Lock() + e, ok := cache[key] + cacheMu.Unlock() + if ok && time.Now().Before(e.exp) { + r := e.msg.Copy() + r.Id = m.Id + return r, nil + } + + r, _, err := c.Exchange(m, addr) + if err != nil || r.Rcode != dns.RcodeSuccess || len(r.Answer) == 0 || r.Truncated { + return r, err + } + + ttl := maxCacheTTL + for _, rr := range r.Answer { + ttl = min(ttl, time.Duration(rr.Header().Ttl)*time.Second) + } + if ttl > 0 { + cacheMu.Lock() + if len(cache) >= maxCacheEntries { + clear(cache) + } + cache[key] = cacheEntry{r.Copy(), time.Now().Add(ttl)} + cacheMu.Unlock() + } + return r, nil +} diff --git a/Other/aiodns/cache_test.go b/Other/aiodns/cache_test.go new file mode 100644 index 0000000..0f95628 --- /dev/null +++ b/Other/aiodns/cache_test.go @@ -0,0 +1,40 @@ +package main + +import ( + "net" + "sync/atomic" + "testing" + + "github.com/miekg/dns" +) + +func TestExchangeCachesAnswers(t *testing.T) { + var hits int32 + ln, err := net.Listen("tcp", "127.0.0.1:0") + if err != nil { + t.Fatal(err) + } + srv := &dns.Server{Listener: ln, Handler: dns.HandlerFunc(func(w dns.ResponseWriter, m *dns.Msg) { + atomic.AddInt32(&hits, 1) + r := new(dns.Msg) + r.SetReply(m) + r.Answer = append(r.Answer, &dns.A{Hdr: dns.RR_Header{Name: m.Question[0].Name, Rrtype: dns.TypeA, Class: dns.ClassINET, Ttl: 30}, A: net.IPv4(1, 2, 3, 4)}) + _ = w.WriteMsg(r) + })} + go srv.ActivateAndServe() + defer srv.Shutdown() + + c := &dns.Client{Net: "tcp"} + for id := uint16(1); id <= 2; id++ { + m := new(dns.Msg) + m.SetQuestion("cache.test.", dns.TypeA) + m.Id = id + r, err := exchange(c, m, ln.Addr().String()) + if err != nil || len(r.Answer) != 1 || r.Id != id { + t.Fatalf("id %d: reply %v err %v", id, r, err) + } + } + if hits != 1 { + t.Fatalf("upstream hit %d times, want 1", hits) + } +} diff --git a/Other/aiodns/go.mod b/Other/aiodns/go.mod index be97a01..b8ea673 100644 --- a/Other/aiodns/go.mod +++ b/Other/aiodns/go.mod @@ -1,10 +1,10 @@ module aiodns -go 1.17 +go 1.25.0 -require github.com/miekg/dns v1.1.43 +require github.com/miekg/dns v1.1.73 require ( - golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect - golang.org/x/sys v0.0.0-20210303074136-134d130e1a04 // indirect + golang.org/x/net v0.57.0 // indirect + golang.org/x/sys v0.47.0 // indirect ) diff --git a/Other/aiodns/go.sum b/Other/aiodns/go.sum index e4731d1..527486b 100644 --- a/Other/aiodns/go.sum +++ b/Other/aiodns/go.sum @@ -1,12 +1,8 @@ -github.com/miekg/dns v1.1.43 h1:JKfpVSCB84vrAmHzyrsxB5NAr5kLoMXZArPSw7Qlgyg= -github.com/miekg/dns v1.1.43/go.mod h1:+evo5L0630/F6ca/Z9+GAqzhjGyn8/c+TBaOyfEl0V4= -golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 h1:qWPm9rbaAMKs8Bq/9LRpbMqxWRVUAQwMI9fVrssnTfw= -golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= -golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ= -golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= -golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/sys v0.0.0-20210303074136-134d130e1a04 h1:cEhElsAv9LUt9ZUUocxzWe05oFLVd+AA2nstydTeI8g= -golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= -golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= -golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= +github.com/miekg/dns v1.1.73 h1:uhT8nJxmTrPJYClxVxTCX+CVn6qnzSiybRk72Z6DgrE= +github.com/miekg/dns v1.1.73/go.mod h1:RW2Obtfd5NZHvOFe3zYG0W8koWOQtAzyHaLo8vASBuQ= +golang.org/x/net v0.57.0 h1:K5+3DljvIuDG9/Jv9rvyMywYNFCQ9RSUY6OOTTkT+tE= +golang.org/x/net v0.57.0/go.mod h1:KpXc8iv+r3XplLAG/f7Jsf9RPszJzdR0f58q9vGOuEU= +golang.org/x/sync v0.22.0 h1:SZjpbeLmrCk4xhRSZFNZW5gFUeCeFgjekvI/+gfScek= +golang.org/x/sync v0.22.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0= +golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs= +golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw= diff --git a/Other/aiodns/main.go b/Other/aiodns/main.go index 4288768..03558b3 100644 --- a/Other/aiodns/main.go +++ b/Other/aiodns/main.go @@ -148,7 +148,7 @@ func handleServerName(w dns.ResponseWriter, m *dns.Msg) { r.SetReply(m) for i := 0; i < len(m.Question); i++ { - rr, err := dns.NewRR(fmt.Sprintf("%s PTR Netch", m.Question[i].Name)) + rr, err := dns.NewRR(fmt.Sprintf("%s PTR Netrix", m.Question[i].Name)) if err != nil { fmt.Printf("[aiodns][dns.NewRR] %v\n", err) return @@ -161,18 +161,26 @@ func handleServerName(w dns.ResponseWriter, m *dns.Msg) { } func handleChinaDNS(w dns.ResponseWriter, m *dns.Msg) { - r, _, err := CDNS.Exchange(m, ChinaDNS) + r, err := exchange(&CDNS, m, ChinaDNS) if err != nil { fmt.Printf("[aiodns] handleChinaDNS: %v\n", err) + + // Exchange returns no message on failure; writing nil would panic and take the whole process down + r = new(dns.Msg) + r.SetRcode(m, dns.RcodeServerFailure) } _ = w.WriteMsg(r) } func handleOtherDNS(w dns.ResponseWriter, m *dns.Msg) { - r, _, err := ODNS.Exchange(m, OtherDNS) + r, err := exchange(&ODNS, m, OtherDNS) if err != nil { fmt.Printf("[aiodns] handleOtherDNS: %v\n", err) + + // Exchange returns no message on failure; writing nil would panic and take the whole process down + r = new(dns.Msg) + r.SetRcode(m, dns.RcodeServerFailure) } _ = w.WriteMsg(r) diff --git a/Other/aiodns/main_test.go b/Other/aiodns/main_test.go new file mode 100644 index 0000000..bf31f83 --- /dev/null +++ b/Other/aiodns/main_test.go @@ -0,0 +1,47 @@ +package main + +import ( + "testing" + "time" + + "github.com/miekg/dns" +) + +type fakeWriter struct { + dns.ResponseWriter + written *dns.Msg +} + +func (f *fakeWriter) WriteMsg(m *dns.Msg) error { + // the real writer packs the message and panics on nil + if _, err := m.Pack(); err != nil { + return err + } + f.written = m + return nil +} + +func TestUpstreamFailureAnswersServFail(t *testing.T) { + query := new(dns.Msg) + query.SetQuestion("example.com.", dns.TypeA) + + for name, handle := range map[string]func(dns.ResponseWriter, *dns.Msg){ + "other": func(w dns.ResponseWriter, m *dns.Msg) { + ODNS = dns.Client{Net: "tcp", Timeout: time.Second} + OtherDNS = "127.0.0.1:1" // nothing listens here + handleOtherDNS(w, m) + }, + "china": func(w dns.ResponseWriter, m *dns.Msg) { + CDNS = dns.Client{Net: "tcp", Timeout: time.Second} + ChinaDNS = "127.0.0.1:1" + handleChinaDNS(w, m) + }, + } { + w := &fakeWriter{} + handle(w, query) + + if w.written == nil || w.written.Rcode != dns.RcodeServerFailure || w.written.Id != query.Id { + t.Fatalf("%s: got %+v, want a SERVFAIL reply to the query", name, w.written) + } + } +} diff --git a/Other/pcap2socks/.gitignore b/Other/pcap2socks/.gitignore new file mode 100644 index 0000000..a7ecb2f --- /dev/null +++ b/Other/pcap2socks/.gitignore @@ -0,0 +1,2 @@ +npcap-sdk* +crate/target/ diff --git a/Other/pcap2socks/VENDORED.md b/Other/pcap2socks/VENDORED.md new file mode 100644 index 0000000..edefbd2 --- /dev/null +++ b/Other/pcap2socks/VENDORED.md @@ -0,0 +1,21 @@ +# pcap2socks (vendored) + +Source of [zhxie/pcap2socks](https://github.com/zhxie/pcap2socks) (MIT, `crate/LICENSE`). The upstream repository is +**archived** (last commit 2022-10-08, v0.6.2 plus 5 commits), so it is built from source here instead of downloading the old release zip. + +| | | +| --- | --- | +| Base | upstream `master` @ `07dcd66` ("Fix lints (#33)"), crate version still 0.6.2 | +| Share mode | `Netrix/Controllers/PcapController.cs` runs `pcap2socks.exe --interface \Device\NPF_{id} --destination host:port [--username --password]` and waits for the `└` banner line | +| Build | `build.ps1` downloads the Npcap SDK 1.16 (SHA-256 checked) for `Packet.lib`, then `cargo build --release --locked` in `crate/`; output `..\release\pcap2socks.exe` | +| Run time | Npcap in WinPcap API-compatible mode must be installed (`Packet.dll`), as before | + +Changes against upstream: +- Dependencies updated: `Cargo.lock` regenerated (tokio 1.9 -> 1.53, rand, clap 2.34, env_logger, ...) and `pnet` 0.28 -> 0.35, `ipnetwork` 0.18 -> 0.20, `lru` 0.6 -> 0.12. +- `src/lib.rs`: two lines for the `lru` 0.12 API (`NonZeroUsize` capacity, `cap().get()`). +- The `netifs` git dependency (an unmaintained 2020 Apache-2.0 library) is vendored in `crate/vendor/netifs` (own license file inside), with + the `readme` key removed and `eui48` without default features (its `rustc-serialize` no longer compiles). +- Directory is `crate/` because `Other/clean.ps1` deletes any `Other//src`. + +Checked: 11 upstream unit tests pass; `--help` and `-V` output and the argument errors match the old v0.6.2 release exe, and both stop at the +same place when no adapter list is available. **Not checked:** capturing and forwarding real traffic (needs Npcap and a game console or second device). diff --git a/Other/pcap2socks/build.ps1 b/Other/pcap2socks/build.ps1 index cdff33a..6d0e5ad 100644 --- a/Other/pcap2socks/build.ps1 +++ b/Other/pcap2socks/build.ps1 @@ -1,14 +1,30 @@ Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) +# pnet links against Packet.lib. The Npcap SDK ships it (needed at build time only, Npcap itself is needed at run time). +$sdkUrl = 'https://npcap.com/dist/npcap-sdk-1.16.zip' +$sdkSha256 = 'f0a8be7778ee3ae1b99bbbecb27a3ff0f6c111a4093f1c78c5c5a099607184db' + try { - Invoke-WebRequest ` - -Uri 'https://github.com/zhxie/pcap2socks/releases/download/v0.6.2/pcap2socks-v0.6.2-windows-amd64.zip' ` - -OutFile 'pcap2socks.zip' - Expand-Archive -Force -Path pcap2socks.zip -DestinationPath pcap2socks + Invoke-WebRequest -Uri $sdkUrl -OutFile 'npcap-sdk.zip' + + if ( (Get-FileHash 'npcap-sdk.zip' -Algorithm SHA256).Hash -ne $sdkSha256 ) { + throw 'npcap-sdk.zip has an unexpected SHA256' + } + + Expand-Archive -Force -Path 'npcap-sdk.zip' -DestinationPath 'npcap-sdk' } catch { + Write-Host $_ + exit 1 +} + +$Env:LIB = "$PWD\npcap-sdk\Lib\x64;$Env:LIB" + +Set-Location 'crate' +cargo build --release --locked +if ( -Not $? ) { exit 1 } -mv -Force 'pcap2socks\pcap2socks.exe' '..\release\pcap2socks.exe' -exit 0 \ No newline at end of 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"29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b" diff --git a/Other/pcap2socks/crate/Cargo.toml b/Other/pcap2socks/crate/Cargo.toml new file mode 100644 index 0000000..2bf8eec --- /dev/null +++ b/Other/pcap2socks/crate/Cargo.toml @@ -0,0 +1,32 @@ +[package] +name = "pcap2socks" +version = "0.6.2" +authors = ["Xie Zhihao "] +edition = "2018" +description = "Redirect traffic to SOCKS proxy with pcap." +readme = "README.md" +repository = "https://github.com/zhxie/pcap2socks" +license = "MIT" +keywords = ["proxy", "pcap", "socks"] +categories = ["command-line-utilities", "network-programming"] + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] +async-socks5 = "0.5.0" +clap = "2.33.1" +dns-lookup = "1.0.8" +env_logger = "0.9.0" +ipnetwork = "0.20.0" +log = "0.4.14" +lru = "0.12.5" +pnet = "0.35.0" +rand = "0.8.4" +structopt = "0.3.22" +tokio = { version = "1.9.0", features = ["rt", "rt-multi-thread", "io-util", "net", "time", "macros", "sync"] } + +[target.'cfg(windows)'.dependencies] +netifs = { path = "vendor/netifs" } + +[target.'cfg(not(windows))'.dependencies] +interfaces = "0.0.4" diff --git a/Other/pcap2socks/crate/LICENSE b/Other/pcap2socks/crate/LICENSE new file mode 100644 index 0000000..4e79fbb --- /dev/null +++ b/Other/pcap2socks/crate/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2020 Xie Zhihao + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/Other/pcap2socks/crate/README.md b/Other/pcap2socks/crate/README.md new file mode 100644 index 0000000..8ea35af --- /dev/null +++ b/Other/pcap2socks/crate/README.md @@ -0,0 +1,95 @@ +# pcap2socks + +**pcap2socks** is a proxy which redirect traffic to a SOCKS proxy with pcap written in Rust. + +You can use [pcap2socks GUI](https://github.com/zhxie/pcap2socks-gui) for a front-end interface. + +_pcap2socks is designed to accelerate games in game consoles._ + +## Features + +- **Redirect Traffic**: Redirect TCP and UDP traffic to a SOCKS proxy. +- **Proxy ARP**: Reply ARP request as it owns the specified address which is not on the network. +- **Cross Platform** +- **Full Cone NAT** + +## Dependencies + +1. [Npcap](http://www.npcap.org/) or WinPcap in Windows (If using Npcap, make sure to install with the "Install Npcap in WinPcap API-compatible Mode"), libpcap in macOS, Linux and others. + +## Build + +### Windows + +If you want to build pcap2socks in Windows, you must meet all the three requirements described in [libpnet](https://github.com/libpnet/libpnet#windows). + +## Usage + +``` +pcap2socks -s
+ +# Or a more general one using proxy ARP (recommended) +pcap2socks -s
-p
-d
+``` + +### Flags + +`-h, --help`: Prints help information. + +`-v, --verbose`: Prints verbose information (`-vv` for vverbose). + +`-V, --version`: Prints version information. + +`--force-associate-destination`, `--force-associate-bind-address`: Force to associate with the destination/replied bind address. pcap2socks will associate with the destination instead of the replied bind address in UDP ASSOCIATE if the replied bind address is in the private network by default. If this flag is set, pcap2socks will force to associate with the destination/replied bind address. If both flags are set, the `--force-associate-destination` will take effect. + +### Options + +`-i, --interface `: Interface for listening. + +`--mtu `: MTU. Generally, pcap2socks will automatically obtain the MTU, but you can also override by setting this option. The MTU is set in the traffic from local to the source. + +`-P, --preset `: Preset. You can use preset source and publish of game accelerators in the market. Available values are `t`, `tencent` for [Tencent Online Game Accelerator](https://jiasu.qq.com/) and `n`, `netease`, `u`, `uu` for [Netease UU Game Accelerator](https://uu.163.com/). + +`-s, --source
`: Source. The source can be a single IPv4 address like `192.168.1.2`, or an IPv4 CIDR network like `10.10.0.1/24`. + +`-p, --publish
`: ARP publishing address. If this option is set, pcap2socks will reply ARP request as it owns the specified address which is not on the network, also called proxy ARP. + +`-d, --destination
`: Destination, default as `127.0.0.1:1080`. + +`--username `: Username. This value should be set only when the SOCKS5 server requires the username/password authentication. + +`--password `: Password. This value should be set only when the SOCKS5 server requires the username/password authentication. + +## Troubleshoot + +1. Because the packet sent from sources should only be handled by pcap2socks, you have to disable IP forward or configure the firewall with the following command statement. For more information, please refer to the troubleshoot paragraph in [IkaGo](https://github.com/zhxie/ikago#troubleshoot). + + ``` + // Linux + sysctl -w net.ipv4.ip_forward=0 + + // macOS + sysctl -w net.inet.ip.forwarding=0 + ``` + +2. pcap2socks requires root permission in some OS by default. But you can run pcap2socks in non-root by executing the following command before opening pcap2socks. + ``` + // Linux + setcap cap_net_raw+ep path_to_pcap2socks + ``` + +## Limitations + +1. IPv6 is not supported yet. + +2. Because only SOCKS5 can forward UDP traffic, pcap2socks only support SOCKS5 at this point. A version with SOCKS4 support without redirecting UDP traffic will release in the future. + +## Known Issues + +1. Applications like VMWare Workstation on Windows may implement their own IP forwarding and forward packets which should be handled by pcap2socks, resulting in abnormal operations in pcap2socks. + +2. The traffic flow control was not implemented in pcap2socks currently. On certain occasions, bandwidth may be heavily occupied by one side of a connection, causing the other side of the connection and other connections to be unable to transmit data normally. + +## License + +pcap2socks is licensed under [the MIT License](/LICENSE). diff --git a/Other/pcap2socks/crate/build-run.log b/Other/pcap2socks/crate/build-run.log new file mode 100644 index 0000000..4818980 --- /dev/null +++ b/Other/pcap2socks/crate/build-run.log @@ -0,0 +1 @@ +EXIT=1 diff --git a/Other/pcap2socks/crate/src/lib.rs b/Other/pcap2socks/crate/src/lib.rs new file mode 100644 index 0000000..045b707 --- /dev/null +++ b/Other/pcap2socks/crate/src/lib.rs @@ -0,0 +1,1917 @@ +#![recursion_limit = "256"] + +//! Redirect traffic to a SOCKS proxy with pcap. + +use ipnetwork::Ipv4Network; +use log::{debug, info, trace, warn}; +use lru::LruCache; +use rand::{self, Rng}; +use stat::Traffic; +use std::cmp::{max, min}; +use std::collections::{HashMap, HashSet}; +use std::net::{Ipv4Addr, Shutdown, SocketAddrV4}; +use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering}; +use std::sync::{Arc, Mutex}; +use std::thread; +use std::time::Duration; +use tokio::io; + +pub mod packet; +pub mod pcap; +pub mod proxy; +pub mod stat; +pub mod tcp; + +pub use self::proxy::ProxyConfig; +use self::proxy::{DatagramWorker, ForwardDatagram, ForwardStream, StreamWorker}; +use packet::layer::arp::Arp; +use packet::layer::ethernet::Ethernet; +use packet::layer::icmpv4::Icmpv4; +use packet::layer::ipv4::Ipv4; +use packet::layer::tcp::Tcp; +use packet::layer::udp::Udp; +use packet::layer::{Layer, LayerKinds, Layers}; +use packet::{Defraggler, Indicator}; +use pcap::Interface; +use pcap::{HardwareAddr, Receiver, Sender}; +use tcp::{TcpRxState, TcpTxState}; + +/// Gets a list of available network interfaces for the current machine. +pub fn interfaces() -> Vec { + pcap::interfaces() + .into_iter() + .filter(|inter| inter.is_up() && !inter.is_loopback()) + .collect() +} + +/// Gets an available network interface. +pub fn interface(name: Option) -> Option { + let mut inters = match name { + Some(ref name) => { + let mut inters = interfaces(); + inters.retain(|inter| inter.name() == name); + + inters + } + None => interfaces(), + }; + + if inters.len() != 1 { + None + } else { + Some(inters.pop().unwrap()) + } +} + +/// Represents the max distance of `u32` values between packets in an `u32` window. +const MAX_U32_WINDOW_SIZE: usize = 16 * 1024 * 1024; + +/// Represents the wait time after a `TimedOut` `IoError`. +const TIMEDOUT_WAIT: u64 = 20; + +/// Represents if the receive-side silly window syndrome avoidance, Clark's algorithm, is enabled. +const ENABLE_RECV_SWS_AVOID: bool = true; +/// Represents if the send-side silly window syndrome avoidance, Clark's algorithm, is enabled. +const ENABLE_SEND_SWS_AVOID: bool = true; + +/// Represents if the delayed ACK is enabled. +const ENABLE_DELAYED_ACK: bool = true; + +/// Represents if the TCP MSS option is enabled. +const ENABLE_MSS: bool = true; + +/// Represents the minimum frame size. +/// Because all traffic is in Ethernet, and the 802.3 specifies the minimum is 64 Bytes. +/// Exclude the 4 bytes used in FCS, the minimum frame size in pcap2socks is 60 Bytes. +const MINIMUM_FRAME_SIZE: usize = 60; + +/// Represents a channel forward traffic to the source in pcap. +pub struct Forwarder { + tx: Sender, + src_mtu_map: HashMap, + local_mtu: usize, + src_hardware_addr_map: HashMap, + local_hardware_addr: HardwareAddr, + local_ip_addr: Ipv4Addr, + ipv4_identification_map: HashMap<(Ipv4Addr, Ipv4Addr), u16>, + states: HashMap<(SocketAddrV4, SocketAddrV4), TcpTxState>, + traffic_size: Option>, + traffic_count: Option>, +} + +#[allow(clippy::unnecessary_lazy_evaluations)] +impl Forwarder { + /// Creates a new `Forwarder`. + pub fn new( + tx: Sender, + mtu: usize, + local_hardware_addr: HardwareAddr, + local_ip_addr: Ipv4Addr, + ) -> Forwarder { + Forwarder::new_monitored(tx, mtu, local_hardware_addr, local_ip_addr, None) + } + + /// Creates a new `Forwarder` which is monitored. + pub fn new_monitored( + tx: Sender, + mtu: usize, + local_hardware_addr: HardwareAddr, + local_ip_addr: Ipv4Addr, + traffic: Option, + ) -> Forwarder { + let size = traffic.as_ref().map(|traffic| traffic.size()); + let count = traffic.as_ref().map(|traffic| traffic.count()); + Forwarder { + tx, + src_mtu_map: HashMap::new(), + local_mtu: mtu, + src_hardware_addr_map: HashMap::new(), + local_hardware_addr, + local_ip_addr, + ipv4_identification_map: HashMap::new(), + states: HashMap::new(), + traffic_size: size, + traffic_count: count, + } + } + + /// Sets the source MTU. + pub fn set_src_mtu(&mut self, src_ip_addr: Ipv4Addr, mtu: usize) -> bool { + let prev_mtu = *self + .src_mtu_map + .get(&src_ip_addr) + .unwrap_or(&self.local_mtu); + + self.src_mtu_map + .insert(src_ip_addr, min(self.local_mtu, mtu)); + trace!("set source MTU of {} to {}", src_ip_addr, mtu); + + return *self + .src_mtu_map + .get(&src_ip_addr) + .unwrap_or(&self.local_mtu) + != prev_mtu; + } + + /// Sets the source hardware address. + pub fn set_src_hardware_addr(&mut self, src_ip_addr: Ipv4Addr, hardware_addr: HardwareAddr) { + self.src_hardware_addr_map + .insert(src_ip_addr, hardware_addr); + trace!( + "set source hardware address of {} to {}", + src_ip_addr, + hardware_addr + ); + } + + /// Sets the local IP address. + pub fn set_local_ip_addr(&mut self, ip_addr: Ipv4Addr) { + self.local_ip_addr = ip_addr; + trace!("set local IP address to {}", ip_addr); + } + + fn increase_ipv4_identification(&mut self, dst_ip_addr: Ipv4Addr, src_ip_addr: Ipv4Addr) { + let entry = self + .ipv4_identification_map + .entry((src_ip_addr, dst_ip_addr)) + .or_insert(0); + *entry = entry.checked_add(1).unwrap_or(0); + trace!( + "increase IPv4 identification of {} -> {} to {}", + dst_ip_addr, + src_ip_addr, + entry + ); + } + + /// Sets the state of a TCP connection. + pub fn set_state(&mut self, dst: SocketAddrV4, src: SocketAddrV4, state: TcpTxState) { + let key = (src, dst); + + self.states.insert(key, state); + } + + /// Removes all information related to a TCP connection. + pub fn clean_up(&mut self, dst: SocketAddrV4, src: SocketAddrV4) { + let key = (src, dst); + + self.states.remove(&key); + } + + /// Returns the source MTU. + pub fn get_src_mtu(&self, src_ip_addr: Ipv4Addr) -> usize { + *self + .src_mtu_map + .get(&src_ip_addr) + .unwrap_or(&self.local_mtu) + } + + /// Returns the state of a TCP connection. + pub fn get_state(&self, dst: SocketAddrV4, src: SocketAddrV4) -> Option<&TcpTxState> { + let key = (src, dst); + + self.states.get(&key) + } + + /// Returns the mutable state of a TCP connection. + pub fn get_state_mut( + &mut self, + dst: SocketAddrV4, + src: SocketAddrV4, + ) -> Option<&mut TcpTxState> { + let key = (src, dst); + + self.states.get_mut(&key) + } + + fn get_tcp_window(&self, dst: SocketAddrV4, src: SocketAddrV4) -> u16 { + let key = (src, dst); + + let state = self.states.get(&key).unwrap(); + + // Avoid SWS + if ENABLE_RECV_SWS_AVOID { + let thresh = min(state.half_max_window() as usize, self.local_mtu); + + if (state.window() as usize) < thresh { + 0 + } else { + state.window() + } + } else { + state.window() + } + } + + /// Returns the size of the cache and the queue of a TCP connection. + pub fn get_cache_size(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> usize { + let key = (src, dst); + + let state = self.states.get(&key).unwrap(); + + state.cache().len() + state.queue().len() + } + + /// Sends an ARP reply packet. + pub fn send_arp_reply(&mut self, src_ip_addr: Ipv4Addr) -> io::Result<()> { + // ARP + let arp = Arp::new_reply( + self.local_hardware_addr, + self.local_ip_addr, + *self + .src_hardware_addr_map + .get(&src_ip_addr) + .unwrap_or(&pcap::HARDWARE_ADDR_UNSPECIFIED), + src_ip_addr, + ); + + // Send + self.send_ethernet(arp.dst_hardware_addr(), Layers::Arp(arp), None, None) + } + + /// Sends an gratuitous ARP packet. + pub fn send_gratuitous_arp(&mut self) -> io::Result<()> { + // ARP + let arp = Arp::gratuitous_arp(self.local_hardware_addr, self.local_ip_addr); + + // Send + self.send_ethernet(pcap::HARDWARE_ADDR_BROADCAST, Layers::Arp(arp), None, None) + } + + /// Sends an ICMPv4 echo reply packet. + pub fn send_icmpv4_echo_reply( + &mut self, + dst_ip_addr: Ipv4Addr, + src_ip_addr: Ipv4Addr, + identifier: u16, + sequence_number: u16, + ) -> io::Result<()> { + // ICMPv4 + let icmpv4 = Icmpv4::new_echo_reply(identifier, sequence_number); + + self.send_ipv4(dst_ip_addr, src_ip_addr, Layers::Icmpv4(icmpv4), None) + } + + /// Sends an ICMPv4 destination host unreachable packet. + pub fn send_icmpv4_destination_host_unreachable( + &mut self, + dst_ip_addr: Ipv4Addr, + src_ip_addr: Ipv4Addr, + payload: &[u8], + ) -> io::Result<()> { + // ICMPv4 + let icmpv4 = Icmpv4::new_destination_host_unreachable(payload); + + self.send_ipv4(dst_ip_addr, src_ip_addr, Layers::Icmpv4(icmpv4), None) + } + + /// Sends an ICMPv4 destination port unreachable packet. + pub fn send_icmpv4_destination_port_unreachable( + &mut self, + dst_ip_addr: Ipv4Addr, + src_ip_addr: Ipv4Addr, + payload: &[u8], + ) -> io::Result<()> { + // ICMPv4 + let icmpv4 = Icmpv4::new_destination_port_unreachable(payload); + + self.send_ipv4(dst_ip_addr, src_ip_addr, Layers::Icmpv4(icmpv4), None) + } + + /// Appends TCP payload to the queue. + pub fn queue_tcp( + &mut self, + dst: SocketAddrV4, + src: SocketAddrV4, + payload: &[u8], + ) -> io::Result<()> { + // Append to queue + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + state.append_queue(payload); + + self.send_tcp(dst, src) + } + + /// Retransmits TCP packets from the cache. This method is used for fast retransmission. + pub fn retransmit_tcp( + &mut self, + dst: SocketAddrV4, + src: SocketAddrV4, + sacks: Option>, + ) -> io::Result<()> { + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let sequence = state.cache().sequence(); + let recv_next = state.cache().recv_next(); + + // Congestion control + if let Some(cc) = &mut state.cc_mut() { + cc.fast_retransmission(); + } + + // Find all disjointed ranges + let mut ranges = vec![(sequence, recv_next), ]; + if let Some(sacks) = sacks { + for sack in sacks { + let mut temp_ranges = Vec::new(); + + for range in ranges { + for temp_range in disjoint_u32_range(range, sack) { + temp_ranges.push(temp_range); + } + } + + ranges = temp_ranges; + } + } + let ranges = ranges; + + // Retransmit + for range in &ranges { + let size = range + .1 + .checked_sub(range.0) + .unwrap_or_else(|| range.1 + (u32::MAX - range.0)) as usize; + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let payload = state.cache().get(range.0, size)?; + if !payload.is_empty() { + if range.1 == recv_next && state.cache_fin().is_some() { + // ACK/FIN + trace!( + "retransmit TCP ACK/FIN ({} Bytes) {} -> {} from {}", + payload.len(), + dst, + src, + sequence + ); + + // Send + self.send_tcp_ack(dst, src, range.0, payload.as_slice(), true)?; + } else { + // ACK + trace!( + "retransmit TCP ACK ({} Bytes) {} -> {} from {}", + payload.len(), + dst, + src, + sequence + ); + + // Send + self.send_tcp_ack(dst, src, range.0, payload.as_slice(), false)?; + } + } + } + + // Pure FIN + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + if ranges.is_empty() && state.cache_fin().is_some() { + // FIN + trace!("retransmit TCP FIN {} -> {}", dst, src); + + // Send + self.send_tcp_fin(dst, src)?; + } + + Ok(()) + } + + /// Retransmits timed out TCP packets from the cache. This method is used for transmitting + /// timed out data. + pub fn retransmit_tcp_timedout( + &mut self, + dst: SocketAddrV4, + src: SocketAddrV4, + ) -> io::Result<()> { + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let next_rto = state.next_rto(); + let payload = state.cache_mut().get_timed_out_and_update(next_rto); + let sequence = state.cache().sequence(); + let size = state.cache().len(); + + if size > 0 { + if !payload.is_empty() { + // Double RTO + state.double_rto(); + + // Congestion control + if let Some(cc) = &mut state.cc_mut() { + cc.timedout(); + } + + // If all the cache is get, the FIN should also be sent + if size == payload.len() && state.cache_fin().is_some() { + // ACK/FIN + state.update_fin_timer(); + trace!( + "retransmit TCP ACK/FIN ({} Bytes) and FIN {} -> {} from {} due to timeout", + payload.len(), + dst, + src, + sequence + ); + + // Send + self.send_tcp_ack(dst, src, sequence, payload.as_slice(), true)?; + } else { + // ACK + trace!( + "retransmit TCP ACK ({} Bytes) {} -> {} from {} due to timeout", + payload.len(), + dst, + src, + sequence + ); + + // Send + self.send_tcp_ack(dst, src, sequence, payload.as_slice(), false)?; + } + } + } else { + // FIN + if let Some(timer) = state.cache_fin() { + if timer.is_timedout() { + // Double RTO + state.double_rto(); + state.update_fin_timer(); + trace!("retransmit TCP FIN {} -> {} due to timeout", dst, src); + + // Send + self.send_tcp_fin(dst, src)?; + } + } + } + + // Delayed ACK0 + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + if state.delayed_ack() { + self.send_tcp_ack_0(dst, src)?; + } + + Ok(()) + } + + /// Sends TCP packets from the queue. + pub fn send_tcp(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()> { + // Retransmit unhandled SYN + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + if state.cache_syn().is_some() { + return self.send_tcp_ack_syn(dst, src); + } + + if state.src_window() > 0 { + // TCP sequence + let sent_size = state.cache().len(); + let remain_size = state.send_window().saturating_sub(sent_size); + let remain_size = min(remain_size, u16::MAX as usize) as u16; + + let mut size = min(remain_size as usize, state.queue().len()); + // Avoid SWS + if ENABLE_SEND_SWS_AVOID { + let mtu = *self.src_mtu_map.get(src.ip()).unwrap_or(&self.local_mtu); + let mss = mtu - (Ipv4::minimum_len() + Tcp::minimum_len()); + + if size < mss && !state.cache().is_empty() { + size = 0; + } + } + let size = size; + if size > 0 { + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let payload = state.append_cache(size)?; + + // If the queue is empty and a FIN is in the queue, pop it + if state.queue().is_empty() && state.queue_fin() { + // ACK/FIN + state.append_cache_fin(); + + // Send + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let sequence = state.sequence(); + self.send_tcp_ack(dst, src, sequence, &payload, true)?; + } else { + // ACK + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let sequence = state.sequence(); + self.send_tcp_ack(dst, src, sequence, &payload, false)?; + } + } + } + + // If the queue is empty and a FIN is in the queue, pop it + // FIN + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + #[allow(clippy::collapsible_if)] + if state.queue_fin() { + if state.cache().is_empty() { + // FIN + state.append_cache_fin(); + + // Send + self.send_tcp_fin(dst, src)?; + } + } + + Ok(()) + } + + fn send_tcp_ack( + &mut self, + dst: SocketAddrV4, + src: SocketAddrV4, + sequence: u32, + payload: &[u8], + is_fin: bool, + ) -> io::Result<()> { + // Segmentation + let mss = *self.src_mtu_map.get(src.ip()).unwrap_or(&self.local_mtu) + - (Ipv4::minimum_len() + Tcp::minimum_len()); + let mut i = 0; + while mss * i < payload.len() { + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let size = min(mss, payload.len() - i * mss); + let payload = &payload[i * mss..i * mss + size]; + let sequence = sequence + .checked_add((i * mss) as u32) + .unwrap_or_else(|| (i * mss) as u32 - (u32::MAX - sequence)); + let mut recv_next = sequence + .checked_add(size as u32) + .unwrap_or_else(|| size as u32 - (u32::MAX - sequence)); + + // TCP + let tcp; + if is_fin && mss * (i + 1) >= payload.len() { + // ACK/FIN + tcp = Tcp::new_ack_fin( + dst.port(), + src.port(), + sequence, + state.acknowledgement(), + self.get_tcp_window(dst, src), + None, + ); + recv_next = recv_next.checked_add(1).unwrap_or(0); + } else { + // ACK + tcp = Tcp::new_ack( + dst.port(), + src.port(), + sequence, + state.acknowledgement(), + self.get_tcp_window(dst, src), + None, + None, + ); + } + + // Send + self.send_ipv4( + *dst.ip(), + *src.ip(), + Layers::Tcp(tcp), + Some(payload), + )?; + + // Clear TCP delayed ACK + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + state.clear_delayed_ack(); + + // Update TCP sequence + let record_sequence = state.sequence(); + let sub_sequence = recv_next + .checked_sub(record_sequence) + .unwrap_or_else(|| recv_next + (u32::MAX - record_sequence)); + if (sub_sequence as usize) <= MAX_U32_WINDOW_SIZE { + state.add_sequence(sub_sequence); + } + + i += 1; + } + + Ok(()) + } + + /// Sends an TCP delayed ACK packet without payload. + pub fn send_tcp_delay_ack_0(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()> { + if ENABLE_DELAYED_ACK { + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + + if state.delayed_ack() { + self.send_tcp_ack_0(dst, src)?; + } else { + state.set_delayed_ack(); + } + } else { + self.send_tcp_ack_0(dst, src)?; + } + + Ok(()) + } + + /// Sends an TCP ACK packet without payload. + pub fn send_tcp_ack_0(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()> { + // TCP + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let tcp = Tcp::new_ack( + dst.port(), + src.port(), + state.sequence(), + state.acknowledgement(), + self.get_tcp_window(dst, src), + state.sacks().clone(), + None, + ); + + // Send + self.send_ipv4(*dst.ip(), *src.ip(), Layers::Tcp(tcp), None)?; + + // Clear TCP delayed ACK + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + state.clear_delayed_ack(); + + Ok(()) + } + + fn send_tcp_ack_syn(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()> { + let mss = match ENABLE_MSS { + true => { + let mss = self.local_mtu - (Ipv4::minimum_len() + Tcp::minimum_len()); + let mss = if mss > u16::MAX as usize { + u16::MAX + } else { + mss as u16 + }; + + Some(mss) + } + false => None, + }; + + // TCP + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let tcp = Tcp::new_ack_syn( + dst.port(), + src.port(), + state.sequence(), + state.acknowledgement(), + self.get_tcp_window(dst, src), + mss, + state.src_wscale(), + state.sack_perm(), + None, + ); + + // Send + self.send_ipv4(*dst.ip(), *src.ip(), Layers::Tcp(tcp), None)?; + + // Clear TCP delayed ACK + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + state.clear_delayed_ack(); + + Ok(()) + } + + /// Sends an TCP ACK/RST packet. + pub fn send_tcp_ack_rst(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()> { + // TCP + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let tcp = Tcp::new_ack_rst( + dst.port(), + src.port(), + state.sequence(), + state.acknowledgement(), + self.get_tcp_window(dst, src), + None, + ); + + // Send + self.send_ipv4(*dst.ip(), *src.ip(), Layers::Tcp(tcp), None)?; + + // Clear TCP delayed ACK + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + state.clear_delayed_ack(); + + Ok(()) + } + + /// Sends an TCP ACK/RST packet of an untracked connection. + pub fn send_tcp_ack_rst_untracked( + &mut self, + dst: SocketAddrV4, + src: SocketAddrV4, + sequence: u32, + ) -> io::Result<()> { + // TCP + let tcp = Tcp::new_ack_rst(dst.port(), src.port(), sequence, 0, 0, None); + + // Send + self.send_ipv4(*dst.ip(), *src.ip(), Layers::Tcp(tcp), None) + } + + /// Sends an TCP RST packet. + pub fn send_tcp_rst( + &mut self, + dst: SocketAddrV4, + src: SocketAddrV4, + sequence: u32, + ) -> io::Result<()> { + // TCP + let tcp = Tcp::new_rst(dst.port(), src.port(), sequence, 0, 0, None); + + // Send + self.send_ipv4(*dst.ip(), *src.ip(), Layers::Tcp(tcp), None) + } + + fn send_tcp_fin(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()> { + // TCP + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let tcp = Tcp::new_fin( + dst.port(), + src.port(), + state.sequence(), + state.acknowledgement(), + self.get_tcp_window(dst, src), + None, + ); + + // Send + self.send_ipv4(*dst.ip(), *src.ip(), Layers::Tcp(tcp), None) + } + + /// Sends UDP packets. + pub fn send_udp( + &mut self, + dst: SocketAddrV4, + src: SocketAddrV4, + payload: &[u8], + ) -> io::Result<()> { + // UDP + let udp = Udp::new(dst.port(), src.port()); + + self.send_ipv4( + *dst.ip(), + *src.ip(), + Layers::Udp(udp), + Some(payload), + ) + } + + fn send_ipv4( + &mut self, + dst_ip_addr: Ipv4Addr, + src_ip_addr: Ipv4Addr, + mut transport: Layers, + payload: Option<&[u8]>, + ) -> io::Result<()> { + // Fragmentation + let size = transport.len() + + match payload { + Some(payload) => payload.len(), + None => 0, + }; + let mss = *self + .src_mtu_map + .get(&src_ip_addr) + .unwrap_or(&self.local_mtu) + - Ipv4::minimum_len(); + if size <= mss { + // IPv4 + let ipv4 = Ipv4::new( + *self + .ipv4_identification_map + .get(&(src_ip_addr, dst_ip_addr)) + .unwrap_or(&0), + transport.kind(), + dst_ip_addr, + src_ip_addr, + ) + .unwrap(); + + // Set IPv4 layer for checksum + match transport { + Layers::Tcp(ref mut tcp) => tcp.set_ipv4_layer(&ipv4), + Layers::Udp(ref mut udp) => udp.set_ipv4_layer(&ipv4), + _ => {} + } + + // Send + self.send_ethernet( + *self + .src_hardware_addr_map + .get(&src_ip_addr) + .unwrap_or(&pcap::HARDWARE_ADDR_UNSPECIFIED), + Layers::Ipv4(ipv4), + Some(transport), + payload, + )?; + } else { + // Pseudo header + let ipv4 = Ipv4::new(0, transport.kind(), dst_ip_addr, src_ip_addr).unwrap(); + + // Set IPv4 layer for checksum + match &mut transport { + Layers::Tcp(tcp) => tcp.set_ipv4_layer(&ipv4), + Layers::Udp(udp) => udp.set_ipv4_layer(&ipv4), + _ => {} + } + + // Payload + let mut buffer = vec![0u8; size]; + match payload { + Some(payload) => transport.serialize_with_payload( + buffer.as_mut_slice(), + payload, + transport.len() + payload.len(), + )?, + None => transport.serialize(buffer.as_mut_slice(), transport.len())?, + }; + + let mut n = 0; + while n < size { + let mut length = min(size - n, mss); + let mut remain = size - n - length; + + // Alignment + if remain > 0 { + length = length / 8 * 8; + remain = size - n - length; + } + + // Leave at least 8 Bytes for last fragment + if remain > 0 && remain < 8 { + length -= 8; + } + + // IPv4 + let ipv4 = if remain > 0 { + Ipv4::new_more_fragment( + *self + .ipv4_identification_map + .get(&(src_ip_addr, dst_ip_addr)) + .unwrap_or(&0), + transport.kind(), + (n / 8) as u16, + dst_ip_addr, + src_ip_addr, + ) + .unwrap() + } else { + Ipv4::new_last_fragment( + *self + .ipv4_identification_map + .get(&(src_ip_addr, dst_ip_addr)) + .unwrap_or(&0), + transport.kind(), + (n / 8) as u16, + dst_ip_addr, + src_ip_addr, + ) + .unwrap() + }; + + // Send + self.send_ethernet( + *self + .src_hardware_addr_map + .get(&src_ip_addr) + .unwrap_or(&pcap::HARDWARE_ADDR_UNSPECIFIED), + Layers::Ipv4(ipv4), + None, + Some(&buffer[n..n + length]), + )?; + + n += length; + } + } + + // Update IPv4 identification + self.increase_ipv4_identification(dst_ip_addr, src_ip_addr); + + Ok(()) + } + + fn send_ethernet( + &mut self, + src_hardware_addr: HardwareAddr, + network: Layers, + transport: Option, + payload: Option<&[u8]>, + ) -> io::Result<()> { + // Ethernet + let ethernet = + Ethernet::new(network.kind(), self.local_hardware_addr, src_hardware_addr).unwrap(); + + // Indicator + let indicator = Indicator::new(Layers::Ethernet(ethernet), Some(network), transport); + + // Send + match payload { + Some(payload) => self.send_with_payload(&indicator, payload), + None => self.send(&indicator), + } + } + + fn send(&mut self, indicator: &Indicator) -> io::Result<()> { + // Serialize and send + let size = indicator.len(); + let buffer_size = max(size, MINIMUM_FRAME_SIZE); + let mut result = None; + self.tx.build_and_send(1, buffer_size, &mut |buffer| { + if let Err(e) = indicator.serialize(&mut buffer[..size]) { + result = Some(e); + } + }); + match result { + Some(e) => return Err(e), + None => debug!("send to pcap: {} ({} Bytes)", indicator.brief(), size), + } + + // Monitor + if let Some(size) = &self.traffic_size { + size.fetch_add(buffer_size, Ordering::Relaxed); + } + if let Some(count) = &self.traffic_count { + count.fetch_add(1, Ordering::Relaxed); + } + + Ok(()) + } + + fn send_with_payload(&mut self, indicator: &Indicator, payload: &[u8]) -> io::Result<()> { + // Serialize and send + let size = indicator.len(); + let buffer_size = max(size + payload.len(), MINIMUM_FRAME_SIZE); + let mut result = None; + self.tx + .build_and_send(1, buffer_size, &mut |buffer| { + if let Err(e) = + indicator.serialize_with_payload(&mut buffer[..size + payload.len()], payload) + { + result = Some(e); + } + }) + .unwrap_or(Ok(()))?; + match result { + Some(e) => return Err(e), + None => debug!( + "send to pcap: {} ({} + {} Bytes)", + indicator.brief(), + size, + payload.len() + ), + } + + // Monitor + if let Some(size) = &self.traffic_size { + size.fetch_add(buffer_size, Ordering::Relaxed); + } + if let Some(count) = &self.traffic_count { + count.fetch_add(1, Ordering::Relaxed); + } + + Ok(()) + } +} + +impl ForwardStream for Forwarder { + fn open(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()> { + self.send_tcp_ack_syn(dst, src)?; + + let state = self + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + state.update_syn_timer(); + + Ok(()) + } + + fn forward(&mut self, dst: SocketAddrV4, src: SocketAddrV4, payload: &[u8]) -> io::Result<()> { + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + if state.cache_fin().is_some() || state.queue_fin() { + return Err(io::Error::from(io::ErrorKind::InvalidData)); + } + + self.queue_tcp(dst, src, payload) + } + + fn tick(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()> { + self.retransmit_tcp_timedout(dst, src) + } + + fn close(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()> { + let state = match self.get_state_mut(dst, src) { + Some(state) => state, + None => return Ok(()), + }; + state.append_queue_fin(); + + self.send_tcp(dst, src) + } + + fn check(&self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result { + let state = self + .get_state(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + Ok(state.queue_remaining()) + } +} + +impl ForwardDatagram for Forwarder { + fn forward(&mut self, dst: SocketAddrV4, src: SocketAddrV4, payload: &[u8]) -> io::Result<()> { + self.send_udp(dst, src, payload) + } +} + +#[allow(clippy::unnecessary_lazy_evaluations)] +fn disjoint_u32_range(main: (u32, u32), sub: (u32, u32)) -> Vec<(u32, u32)> { + let size_main = main + .1 + .checked_sub(main.0) + .unwrap_or_else(|| main.1 + (u32::MAX - main.0)) as usize; + let diff_first = sub + .0 + .checked_sub(main.0) + .unwrap_or_else(|| sub.0 + (u32::MAX - main.0)) as usize; + let diff_second = sub + .1 + .checked_sub(main.1) + .unwrap_or_else(|| sub.1 + (u32::MAX - main.1)) as usize; + let mut vector = Vec::with_capacity(2); + + #[allow(clippy::collapsible_if)] + if diff_first <= MAX_U32_WINDOW_SIZE { + if diff_second > MAX_U32_WINDOW_SIZE { + // sub is in the main + vector.push((main.0, sub.0)); + vector.push((sub.1, main.1)); + } else { + #[allow(clippy::collapsible_if)] + if diff_first >= size_main { + // sub is in the right of the main + vector.push((main.0, main.1)); + } else { + // sub overlaps the right part of the main + vector.push((main.0, sub.0)); + } + } + } else { + #[allow(clippy::collapsible_if)] + if diff_second > MAX_U32_WINDOW_SIZE { + // The distance between the main's left edge and the sub's right edge + let diff = sub + .1 + .checked_sub(main.0) + .unwrap_or_else(|| sub.1 + (u32::MAX - main.0)) as usize; + if diff > MAX_U32_WINDOW_SIZE { + // sub is in the left of the main + vector.push((main.0, main.1)); + } else { + // sub overlaps the left part of the main + vector.push((sub.1, main.1)); + } + } else { + // sub covers the main + } + } + + vector +} + +/// Represents the threshold of TCP ACK duplicates before trigger a fast retransmission. +const DUPLICATES_THRESHOLD: usize = 3; +/// Represents the cool down time between 2 retransmissions. +const RETRANS_COOL_DOWN: u128 = 200; + +/// Represents if the TCP selective acknowledgment option is enabled. +const ENABLE_SACK: bool = true; + +/// Represents if the TCP window scale option is enabled. +const ENABLE_WSCALE: bool = true; +/// Represents the max window scale of the receive window. +const MAX_RECV_WSCALE: u8 = 8; + +/// Represents the max limit of UDP port for binding in local. +const MAX_UDP_PORT: usize = 256; + +/// Represents a channel redirect traffic to the proxy or loopback to the source in pcap. +pub struct Redirector { + tx: Arc>, + tx_src_hardware_addr_set_ip_addr_set: HashSet, + src_ip_addr: Ipv4Network, + local_ip_addr: Ipv4Addr, + gw_ip_addr: Option, + proxy: ProxyConfig, + streams: HashMap<(SocketAddrV4, SocketAddrV4), StreamWorker>, + states: HashMap<(SocketAddrV4, SocketAddrV4), TcpRxState>, + datagrams: HashMap, + /// Represents the map mapping a source port to a local port. + datagram_map: HashMap, + /// Represents the LRU mapping a local port to a source port. + udp_lru: LruCache, + defrag: Defraggler, + traffic_size: Option>, + traffic_count: Option>, +} + +impl Redirector { + /// Creates a new `Redirector`. + pub fn new( + tx: Arc>, + src_ip_addr: Ipv4Network, + local_ip_addr: Ipv4Addr, + gw_ip_addr: Option, + proxy: ProxyConfig, + traffic: Option, + ) -> Redirector { + let size = traffic.as_ref().map(|traffic| traffic.size()); + let count = traffic.as_ref().map(|traffic| traffic.count()); + let redirector = Redirector { + tx, + tx_src_hardware_addr_set_ip_addr_set: HashSet::new(), + src_ip_addr, + local_ip_addr, + gw_ip_addr, + proxy, + streams: HashMap::new(), + states: HashMap::new(), + datagrams: HashMap::new(), + datagram_map: HashMap::new(), + udp_lru: LruCache::new(std::num::NonZeroUsize::new(MAX_UDP_PORT).unwrap()), + defrag: Defraggler::new(), + traffic_size: size, + traffic_count: count, + }; + if let Some(gw_ip_addr) = gw_ip_addr { + redirector.tx.lock().unwrap().set_local_ip_addr(gw_ip_addr); + } + + redirector + } + + /// Opens an `Interface` for redirection. + pub async fn open(&mut self, rx: &mut Receiver) -> io::Result<()> { + self.open_monitored(rx, None).await + } + + /// Opens an `Interface` for redirection and monitoring. + pub async fn open_monitored( + &mut self, + rx: &mut Receiver, + is_running: Option>, + ) -> io::Result<()> { + // Send gratuitous ARP + if self.gw_ip_addr.is_some() { + self.tx.lock().unwrap().send_gratuitous_arp()?; + } + + loop { + // Monitor + if let Some(is_running) = &is_running { + if !is_running.load(Ordering::Relaxed) { + return Ok(()); + } + } + match rx.next() { + Ok(frame) => { + if let Some(ref indicator) = Indicator::from(frame) { + if let Some(t) = indicator.network_kind() { + match t { + LayerKinds::Arp => { + if let Err(ref e) = self.handle_arp(indicator) { + warn!("handle {}: {}", indicator.brief(), e); + } + } + LayerKinds::Ipv4 => { + if let Err(ref e) = self.handle_ipv4(indicator, frame).await { + warn!("handle {}: {}", indicator.brief(), e); + } + } + _ => unreachable!(), + } + } + }; + } + Err(e) => { + if e.kind() == io::ErrorKind::TimedOut { + thread::sleep(Duration::from_millis(TIMEDOUT_WAIT)); + continue; + } + return Err(e); + } + }; + } + } + + fn handle_arp(&mut self, indicator: &Indicator) -> io::Result<()> { + if let Some(gw_ip_addr) = self.gw_ip_addr { + if let Some(arp) = indicator.arp() { + let src = arp.src(); + if src != self.local_ip_addr + && self.src_ip_addr.contains(src) + && arp.dst() == gw_ip_addr + { + let src = arp.src(); + debug!( + "receive from pcap: {} ({} Bytes)", + indicator.brief(), + indicator.len() + ); + + // Set forwarder's hardware address + self.set_tx_hardware_addr(src, arp.src_hardware_addr()); + + // Send + self.tx.lock().unwrap().send_arp_reply(src)?; + + // Monitor + if let Some(size) = &self.traffic_size { + size.fetch_add(indicator.content_len(), Ordering::Relaxed); + } + if let Some(count) = &self.traffic_count { + count.fetch_add(1, Ordering::Relaxed); + } + } + } + } + + Ok(()) + } + + async fn handle_ipv4(&mut self, indicator: &Indicator, frame: &[u8]) -> io::Result<()> { + if let Some(ipv4) = indicator.ipv4() { + let src = ipv4.src(); + if src != self.local_ip_addr && self.src_ip_addr.contains(src) { + let src = ipv4.src(); + debug!( + "receive from pcap: {} ({} + {} Bytes)", + indicator.brief(), + indicator.len(), + indicator.content_len() - indicator.len() + ); + // Set forwarder's hardware address + self.set_tx_hardware_addr(src, indicator.ethernet().unwrap().src()); + + let frame_without_padding = &frame[..indicator.content_len()]; + if ipv4.is_fragment() { + // Fragmentation + let frag = match self.defrag.add(indicator, frame_without_padding) { + Some(frag) => frag, + None => return Ok(()), + }; + let (transport, payload) = frag.concatenate(); + + if let Some(transport) = transport { + match transport { + Layers::Icmpv4(ref icmpv4) => self.handle_icmpv4(icmpv4)?, + Layers::Tcp(ref tcp) => self.handle_tcp(tcp, payload).await?, + Layers::Udp(ref udp) => self.handle_udp(udp, payload).await?, + _ => unreachable!(), + } + } + } else { + #[allow(clippy::collapsible_if)] + if let Some(transport) = indicator.transport() { + match transport { + Layers::Icmpv4(icmpv4) => self.handle_icmpv4(icmpv4)?, + Layers::Tcp(tcp) => { + self.handle_tcp(tcp, &frame_without_padding[indicator.len()..]) + .await? + } + Layers::Udp(udp) => { + self.handle_udp(udp, &frame_without_padding[indicator.len()..]) + .await? + } + _ => unreachable!(), + } + } + } + + // Monitor + if let Some(size) = &self.traffic_size { + size.fetch_add(indicator.content_len(), Ordering::Relaxed); + } + if let Some(count) = &self.traffic_count { + count.fetch_add(1, Ordering::Relaxed); + } + } + } + + Ok(()) + } + + fn handle_icmpv4(&mut self, icmpv4: &Icmpv4) -> io::Result<()> { + if icmpv4.is_destination_port_unreachable() { + // Destination port unreachable + let kind = match icmpv4.next_level_layer_kind() { + Some(kind) => kind, + None => return Ok(()), + }; + #[allow(clippy::single_match)] + match kind { + LayerKinds::Udp => { + let dst = icmpv4.dst().unwrap(); + self.unbind_local_udp_port(dst); + } + _ => {} + } + } else if icmpv4.is_fragmentation_required_and_df_flag_set() { + // Fragmentation required, and DF flag set + let mtu = icmpv4.next_hop_mtu().unwrap(); + if self + .tx + .lock() + .unwrap() + .set_src_mtu(icmpv4.dst_ip_addr().unwrap(), mtu as usize) + { + info!("Update MTU of {} to {}", icmpv4.dst_ip_addr().unwrap(), mtu); + } + } + + Ok(()) + } + + async fn handle_tcp(&mut self, tcp: &Tcp, payload: &[u8]) -> io::Result<()> { + if tcp.is_rst() { + self.handle_tcp_rst(tcp); + } else if tcp.is_ack() { + self.handle_tcp_ack(tcp, payload)?; + } else if tcp.is_syn() { + // Pure TCP SYN + self.handle_tcp_syn(tcp).await?; + } else if tcp.is_fin() { + // Pure TCP FIN + self.handle_tcp_fin(tcp, payload)?; + } else { + unreachable!(); + } + + Ok(()) + } + + fn handle_tcp_ack(&mut self, tcp: &Tcp, payload: &[u8]) -> io::Result<()> { + let src = SocketAddrV4::new(tcp.src_ip_addr(), tcp.src()); + let dst = SocketAddrV4::new(tcp.dst_ip_addr(), tcp.dst()); + let key = (src, dst); + let is_exist = self.streams.get(&key).is_some(); + let is_writable = match self.streams.get(&key) { + Some(stream) => !stream.is_tx_closed(), + None => false, + }; + + if is_exist { + // ACK + let state = self + .states + .get_mut(&key) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + if tcp.sequence() != state.recv_next() { + trace!( + "TCP out of order of {} -> {} at {}", + src, + dst, + tcp.sequence() + ); + } + { + let mut tx_locked = self.tx.lock().unwrap(); + let tx_state = tx_locked + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + + tx_state.acknowledge(tcp.acknowledgement()); + tx_state.set_src_window((tcp.window() as usize) << state.wscale() as usize); + } + + if !payload.is_empty() { + // ACK + if is_writable { + // Append to cache + let cont_payload = state.append_cache(tcp.sequence(), payload)?; + + // SACK + if state.sack_perm() { + let sacks = state.cache().filled(); + self.tx + .lock() + .unwrap() + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))? + .set_sacks(&sacks); + } + + match cont_payload { + Some(payload) => { + // Send + let stream = self + .streams + .get_mut(&key) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + let size = payload.len(); + match stream.send(payload) { + Ok(_) => { + let cache_remaining_size = (state.cache().remaining() + >> state.wscale() as usize) + as u16; + + state.add_recv_next(size as u32); + + let mut tx_locked = self.tx.lock().unwrap(); + let tx_state = tx_locked + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + + // Update window size + tx_state.set_window(cache_remaining_size); + + // Update TCP acknowledgement + tx_state.add_acknowledgement(size as u32); + + // Send delayed ACK0 + // If there is a heavy traffic, the ACK reported may be inaccurate, which would results in retransmission + tx_locked.send_tcp_delay_ack_0(dst, src)?; + } + Err(e) => { + // Send ACK/RST + self.tx.lock().unwrap().send_tcp_ack_rst(dst, src)?; + + // Clean up + self.clean_up(src, dst); + + return Err(e); + } + } + } + None => { + // Retransmission or unordered + let cache_remaining_size = + (state.cache().remaining() >> state.wscale() as usize) as u16; + + // Update window size + let mut tx_locked = self.tx.lock().unwrap(); + let tx_state = tx_locked + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + + tx_state.set_window(cache_remaining_size); + + // Send ACK0 + tx_locked.send_tcp_ack_0(dst, src)?; + } + } + } else { + // Send ACK/RST + self.tx.lock().unwrap().send_tcp_ack_rst(dst, src)?; + + // Clean up + self.clean_up(src, dst); + + return Ok(()); + } + } else { + // ACK0 + if !is_writable { + if self.tx.lock().unwrap().get_cache_size(dst, src) == 0 { + // LAST_ACK + // Clean up + self.clean_up(src, dst); + + return Ok(()); + } + } else { + // Duplicate ACK + state.admit(tcp.acknowledgement()); + if state.duplicate() >= DUPLICATES_THRESHOLD { + let is_cooled_down = match state.last_retrans() { + Some(ref instant) => instant.elapsed().as_millis() < RETRANS_COOL_DOWN, + None => false, + }; + + if !is_cooled_down && !tcp.is_zero_window() { + // Fast retransmit + let mut is_sr = false; + if state.sack_perm() { + if let Some(sacks) = tcp.sack() { + if !sacks.is_empty() { + // Selective retransmission + self.tx.lock().unwrap().retransmit_tcp( + dst, + src, + Some(sacks), + )?; + is_sr = true; + } + } + } + + if !is_sr { + // Back N + self.tx.lock().unwrap().retransmit_tcp(dst, src, None)?; + } + + state.admit_retrans(); + } + } + } + } + + // Trigger sending remaining data + self.tx.lock().unwrap().send_tcp(dst, src)?; + + // FIN + if tcp.is_fin() || state.fin_sequence().is_some() { + self.handle_tcp_fin(tcp, payload)?; + } + } else { + // Send ACK/RST + self.tx + .lock() + .unwrap() + .send_tcp_ack_rst_untracked(dst, src, tcp.acknowledgement())?; + } + + Ok(()) + } + + async fn handle_tcp_syn(&mut self, tcp: &Tcp) -> io::Result<()> { + let src = SocketAddrV4::new(tcp.src_ip_addr(), tcp.src()); + let dst = SocketAddrV4::new(tcp.dst_ip_addr(), tcp.dst()); + let key = (src, dst); + let is_exist = self.streams.get(&key).is_some(); + + // Connect if not connected, drop if established + if !is_exist { + // Clean up + self.clean_up(src, dst); + + // Admit SYN + let wscale = match ENABLE_WSCALE { + true => tcp.wscale(), + false => None, + }; + let recv_wscale = wscale.map(|wscale| min(wscale, MAX_RECV_WSCALE)); + let sack_perm = ENABLE_SACK && tcp.is_sack_perm(); + let state = TcpRxState::new(src, dst, tcp.sequence(), wscale.unwrap_or(0), sack_perm); + + { + let mut tx_locked = self.tx.lock().unwrap(); + + let mut rng = rand::thread_rng(); + let sequence = rng.gen::(); + let acknowledgement = tcp.sequence().checked_add(1).unwrap_or(0); + if let Some(mss) = tcp.mss() { + let mtu = Ipv4::minimum_len() + Tcp::minimum_len() + mss as usize; + if tx_locked.set_src_mtu(tcp.src_ip_addr(), mtu) { + info!("Update MTU of {} to {}", tcp.src_ip_addr(), mtu); + } + } + + let tx_state = TcpTxState::new( + src, + dst, + sequence, + acknowledgement, + tcp.window(), + recv_wscale, + sack_perm, + wscale, + tx_locked.get_src_mtu(tcp.src_ip_addr()) + - (Ipv4::minimum_len() + Tcp::minimum_len()), + ); + tx_locked.set_state(dst, src, tx_state); + } + + // Connect + let stream = StreamWorker::connect(self.get_tx(), src, dst, &self.proxy).await; + + let stream = match stream { + Ok(stream) => stream, + Err(e) => { + { + let mut tx_locked = self.tx.lock().unwrap(); + let tx_state = tx_locked + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + + tx_state.add_acknowledgement(1); + + // Send ACK/RST + tx_locked.send_tcp_ack_rst(dst, src)?; + } + + // Clean up + self.clean_up(src, dst); + + return Err(e); + } + }; + + self.states.insert(key, state); + self.streams.insert(key, stream); + } + + Ok(()) + } + + fn handle_tcp_rst(&mut self, tcp: &Tcp) { + let src = SocketAddrV4::new(tcp.src_ip_addr(), tcp.src()); + let dst = SocketAddrV4::new(tcp.dst_ip_addr(), tcp.dst()); + let key = (src, dst); + + if tcp.is_ack() { + match self.states.get(&key) { + Some(state) => { + // Exam ACK + if tcp.sequence() == state.recv_next() { + // Admit RST + // Clean up + self.clean_up(src, dst); + } + } + None => { + // Clean up + self.clean_up(src, dst); + } + } + } else { + // Clean up + self.clean_up(src, dst); + } + } + + fn handle_tcp_fin(&mut self, tcp: &Tcp, payload: &[u8]) -> io::Result<()> { + let src = SocketAddrV4::new(tcp.src_ip_addr(), tcp.src()); + let dst = SocketAddrV4::new(tcp.dst_ip_addr(), tcp.dst()); + let key = (src, dst); + let is_exist = self.streams.get(&key).is_some(); + let (is_writable, is_readable) = match self.streams.get(&key) { + Some(stream) => (!stream.is_tx_closed(), !stream.is_rx_closed()), + None => (false, false), + }; + + if is_exist { + if is_writable { + let state = self + .states + .get_mut(&key) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + if tcp.is_fin() { + // Update FIN sequence + state.set_fin_sequence( + tcp.sequence() + .checked_add(payload.len() as u32) + .unwrap_or_else(|| payload.len() as u32 - (u32::MAX - tcp.sequence())), + ); + } + + // If the receive next is the same as the FIN sequence, the FIN should be popped + if let Some(fin_sequence) = state.fin_sequence() { + if fin_sequence == state.recv_next() { + // Admit FIN + state.admit_fin(); + state.add_recv_next(1); + + { + let mut tx_locked = self.tx.lock().unwrap(); + let tx_state = tx_locked + .get_state_mut(dst, src) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + + tx_state.add_acknowledgement(1); + + // Send ACK0 + tx_locked.send_tcp_ack_0(dst, src)?; + } + if is_readable { + // Close by local + let stream = self + .streams + .get_mut(&key) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?; + stream.shutdown(Shutdown::Write); + } else { + // Close by remote + // Clean up + self.clean_up(src, dst); + } + } else { + trace!( + "TCP out of order of {} -> {} at {}", + src, + dst, + tcp.sequence() + ); + + if payload.is_empty() { + // Send ACK0 + self.tx.lock().unwrap().send_tcp_ack_0(dst, src)?; + } + } + } + } else { + // Retransmission + // Send ACK0 + self.tx.lock().unwrap().send_tcp_ack_0(dst, src)?; + } + } else { + // Send ACK/RST + self.tx + .lock() + .unwrap() + .send_tcp_ack_rst_untracked(dst, src, tcp.acknowledgement())?; + } + + Ok(()) + } + + fn clean_up(&mut self, src: SocketAddrV4, dst: SocketAddrV4) { + let key = (src, dst); + + self.streams.remove(&key); + self.states.remove(&key); + + self.tx.lock().unwrap().clean_up(dst, src); + } + + async fn handle_udp(&mut self, udp: &Udp, payload: &[u8]) -> io::Result<()> { + let src = SocketAddrV4::new(udp.src_ip_addr(), udp.src()); + + // Bind + let port = self.bind_local_udp_port(src).await?; + + // Send + self.datagrams + .get_mut(&port) + .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))? + .send_to( + payload.to_vec(), + SocketAddrV4::new(udp.dst_ip_addr(), udp.dst()), + )?; + + Ok(()) + } + + async fn bind_local_udp_port(&mut self, src: SocketAddrV4) -> io::Result { + let local_port = self.datagram_map.get(&src); + match local_port { + Some(&local_port) => { + // Update LRU + self.udp_lru.get(&local_port); + + Ok(local_port) + } + None => { + let bind_port = if self.udp_lru.len() < self.udp_lru.cap().get() { + match DatagramWorker::bind(self.get_tx(), src, &self.proxy).await { + Ok((worker, port)) => { + self.datagrams.insert(port, worker); + + // Update map and LRU + self.datagram_map.insert(src, port); + self.udp_lru.put(port, src); + + trace!("bind UDP port {} = {}", port, src); + + Ok(port) + } + Err(e) => Err(e), + } + } else { + Err(io::Error::new(io::ErrorKind::Other, "cannot bind UDP port")) + }; + + match bind_port { + Ok(port) => Ok(port), + Err(e) => { + if self.udp_lru.is_empty() { + Err(e) + } else { + let pair = self.udp_lru.pop_lru().unwrap(); + let port = pair.0; + let prev_src = pair.1; + + // Reuse + self.datagram_map.remove(&prev_src); + trace!("reuse UDP port {} = {} to {}", port, prev_src, src); + self.datagram_map.insert(src, port); + self.datagrams.get_mut(&port).unwrap().set_src(&src); + + // Update LRU + self.udp_lru.put(port, src); + + Ok(port) + } + } + } + } + } + } + + fn unbind_local_udp_port(&mut self, src: SocketAddrV4) { + let local_port = self.datagram_map.get(&src); + if let Some(&local_port) = local_port { + self.datagrams.remove(&local_port); + self.udp_lru.pop(&local_port); + self.datagram_map.remove(&src); + + trace!("unbind UDP port {} = {}", local_port, src); + } + } + + fn get_tx(&self) -> Arc> { + Arc::clone(&self.tx) + } + + fn set_tx_hardware_addr(&mut self, ip_addr: Ipv4Addr, hardware_addr: HardwareAddr) { + if !self.tx_src_hardware_addr_set_ip_addr_set.contains(&ip_addr) { + self.tx + .lock() + .unwrap() + .set_src_hardware_addr(ip_addr, hardware_addr); + self.tx_src_hardware_addr_set_ip_addr_set.insert(ip_addr); + info!("Device {} ({}) joined the network", ip_addr, hardware_addr); + } + } +} diff --git a/Other/pcap2socks/crate/src/main.rs b/Other/pcap2socks/crate/src/main.rs new file mode 100644 index 0000000..d19d2a0 --- /dev/null +++ b/Other/pcap2socks/crate/src/main.rs @@ -0,0 +1,446 @@ +use env_logger::fmt::{Color, Formatter, Target}; +use ipnetwork::Ipv4Network; +use log::{error, info, warn, Level, LevelFilter, Log, Metadata, Record}; +use std::clone::Clone; +use std::fmt::Display; +use std::io::{self, Write}; +use std::net::{AddrParseError, IpAddr, Ipv4Addr, SocketAddrV4}; +use std::str::FromStr; +use std::sync::{Arc, Mutex}; +use structopt::StructOpt; + +use pcap2socks::{self as lib, Forwarder, ProxyConfig, Redirector}; + +#[tokio::main] +async fn main() { + // Parse arguments + let flags = Flags::from_args(); + + // Log + set_logger(flags.verbose); + + // Interface + let inter = match lib::interface(flags.inter) { + Some(inter) => inter, + None => { + error!("Cannot determine the interface. Available interfaces are listed below, and please use -i to designate:"); + for inter in lib::interfaces().iter() { + info!(" {}", inter); + } + return; + } + }; + info!("Listen on {}", inter); + + // MTU + let mtu = match flags.mtu { + Some(mtu) => mtu, + None => { + if inter.mtu() == 0 { + error!("Cannot obtain the MTU. Please use --mtu to set"); + return; + } + + inter.mtu() + } + }; + info!("Use MTU {}", mtu); + + // Route + let src = match flags.preset { + Some(ref preset) => match preset.as_str() { + "t" | "tencent" => Ipv4Network::new(Ipv4Addr::new(10, 6, 0, 1), 32).unwrap(), + "n" | "netease" | "u" | "uu" => { + let mut ip_octets = inter.ip_addr().unwrap().octets(); + ip_octets[0] = 172; + ip_octets[1] = 24; + ip_octets[2] = ip_octets[2].checked_add(1).unwrap_or(0); + + Ipv4Network::new(Ipv4Addr::from(ip_octets), 32).unwrap() + } + _ => { + error!("The preset {} is not available", preset); + return; + } + }, + None => flags.src.unwrap(), + }; + let publish = match flags.preset { + Some(ref preset) => match preset.as_str() { + "t" | "tencent" => Some(Ipv4Addr::new(10, 6, 0, 2)), + "n" | "netease" | "u" | "uu" => { + let mut ip_octets = inter.ip_addr().unwrap().octets(); + ip_octets[0] = 172; + ip_octets[1] = 24; + + Some(Ipv4Addr::from(ip_octets)) + } + _ => { + error!("The preset {} is not available", preset); + return; + } + }, + None => flags.publish, + }; + + // Publish + if let Some(publish) = publish { + info!("Publish for {}", publish); + } + + // Gateway + let gw = publish.unwrap_or_else(|| inter.ip_addr().unwrap()); + if src.size() == 1 && src.network() == gw { + error!("The source cannot be the same with the gateway (publish)"); + return; + } + + // Instructions + show_info(src, gw, mtu); + + // Proxy + let (tx, mut rx) = match inter.open() { + Ok((tx, rx)) => (tx, rx), + Err(ref e) => { + error!("{}", e); + return; + } + }; + let forwarder = Forwarder::new(tx, mtu, inter.hardware_addr(), inter.ip_addr().unwrap()); + let auth = match flags.username { + Some(ref username) => Some((username.clone(), flags.password.unwrap())), + None => None, + }; + let mut redirector = Redirector::new( + Arc::new(Mutex::new(forwarder)), + src, + gw, + publish, + ProxyConfig::new_socks( + flags.dst.addr(), + flags.force_associate_dst, + flags.force_associate_bind_addr, + auth, + ), + None, + ); + match flags.username { + Some(username) => info!("Proxy {} to {}@{}", src, username, flags.dst), + None => info!("Proxy {} to {}", src, flags.dst), + } + if let Err(ref e) = redirector.open(&mut rx).await { + error!("{}", e); + } +} + +fn show_info(src: Ipv4Network, gw: Ipv4Addr, mtu: usize) { + macro_rules! max { + ($x: expr) => ($x); + ($x: expr, $($z: expr),+) => (::std::cmp::max($x, max!($($z),*))); + } + + let src_str = match src.size() { + 1 => src.network().to_string(), + _ => format!("{} - {}", src.network(), src.nth(src.size() - 1).unwrap()), + }; + let mtu_str = format!("<={}", mtu); + let src_octets = src.network().octets(); + let mask_octets = src.mask().octets(); + let gw_octets = gw.octets(); + + // Mask, align to 8 bytes + let mut mask_octets = [ + !(src_octets[0] ^ gw_octets[0]) & mask_octets[0], + !(src_octets[1] ^ gw_octets[1]) & mask_octets[1], + !(src_octets[2] ^ gw_octets[2]) & mask_octets[2], + !(src_octets[3] ^ gw_octets[3]) & mask_octets[3], + ]; + let mut is_zero = false; + mask_octets.iter_mut().for_each(|b| { + if is_zero || *b != u8::MAX { + *b = 0; + is_zero = true; + } + }); + let mask_value = u32::from_be_bytes(mask_octets); + let mask = Ipv4Addr::from(mask_value); + + let width = max!( + src_str.len(), + mask.to_string().len(), + gw.to_string().len(), + mtu_str.len() + ); + info!("Please set the network of your device which is going to be proxied with the following parameters:"); + info!(" ┌─────────────{:─>w$}─┐", "", w = width); + info!(" │ IP Address {:>w$} │", src_str, w = width); + info!(" │ Mask {:>w$} │", mask, w = width); + info!(" │ Gateway {:>w$} │", gw, w = width); + info!(" │─────────────{:─>w$}─│", "", w = width); + info!(" │ MTU {:>w$} │", mtu_str, w = width); + info!(" └─────────────{:─>w$}─┘", "", w = width); + if mask == Ipv4Addr::UNSPECIFIED { + warn!("The mask is all zeros, which may cause potential problems"); + } +} + +#[derive(StructOpt, Clone, Debug, Eq, Hash, PartialEq)] +#[structopt(about)] +struct Flags { + #[structopt( + long, + short, + help = "Prints verbose information (-vv for vverbose)", + parse(from_occurrences) + )] + pub verbose: usize, + #[structopt( + long = "interface", + short, + help = "Interface for listening", + value_name = "INTERFACE", + display_order(0) + )] + pub inter: Option, + #[structopt(long, help = "MTU", value_name = "VALUE", display_order(1))] + pub mtu: Option, + #[structopt( + long, + short = "P", + help = "Preset", + value_name = "PRESET", + display_order(2) + )] + pub preset: Option, + #[structopt( + long = "source", + short, + help = "Source", + value_name = "ADDRESS", + required_unless("preset"), + display_order(3) + )] + pub src: Option, + #[structopt( + long, + short, + help = "ARP publishing address", + value_name = "ADDRESS", + display_order(4) + )] + pub publish: Option, + #[structopt( + long = "destination", + short, + help = "Destination", + value_name = "ADDRESS", + default_value = "127.0.0.1:1080", + display_order(5) + )] + pub dst: ResolvableSocketAddrV4, + #[structopt( + long = "force-associate-destination", + help = "Force to associate with the destination", + conflicts_with("force_associate_bind_addr"), + display_order(1000) + )] + pub force_associate_dst: bool, + #[structopt( + long = "force-associate-bind-address", + help = "Force to associate with the replied bind address", + display_order(1001) + )] + pub force_associate_bind_addr: bool, + #[structopt( + long, + help = "Username", + value_name = "VALUE", + requires("password"), + display_order(1000) + )] + pub username: Option, + #[structopt( + long, + help = "Password", + value_name = "VALUE", + requires("username"), + display_order(1001) + )] + pub password: Option, +} + +/// Represents a logger. +struct Logger { + stderr_logger: env_logger::Logger, + stdout_logger: env_logger::Logger, +} + +impl Logger { + /// Initializes the global logger. + pub fn init(level: LevelFilter) { + let fmt = |buf: &mut Formatter, record: &Record| { + let mut style = buf.style(); + + let level = match &record.level() { + Level::Error => style.set_bold(true).set_color(Color::Red).value("error: "), + Level::Warn => style + .set_bold(true) + .set_color(Color::Yellow) + .value("warning: "), + Level::Info => style.set_bold(true).set_color(Color::Green).value(""), + _ => style.set_color(Color::Rgb(165, 165, 165)).value(""), + }; + writeln!(buf, "{}{}", level, record.args()) + }; + + let stderr_logger = env_logger::builder() + .target(Target::Stderr) + .filter_level(level) + .format(fmt) + .build(); + let stdout_logger = env_logger::builder() + .target(Target::Stdout) + .filter_level(level) + .format(fmt) + .build(); + + let logger = Logger { + stderr_logger, + stdout_logger, + }; + + // Set the logger + let r = log::set_boxed_logger(Box::new(logger)); + if r.is_ok() { + log::set_max_level(level); + } + } +} + +impl Log for Logger { + fn enabled(&self, metadata: &Metadata) -> bool { + match metadata.level() { + Level::Error => self.stderr_logger.enabled(metadata), + _ => self.stdout_logger.enabled(metadata), + } + } + + fn log(&self, record: &Record) { + match record.metadata().level() { + Level::Error => self.stderr_logger.log(record), + _ => self.stdout_logger.log(record), + } + } + + fn flush(&self) {} +} + +fn set_logger(verbose: usize) { + let level = match verbose { + 0 => LevelFilter::Info, + 1 => LevelFilter::Debug, + _ => LevelFilter::Trace, + }; + Logger::init(level); +} + +#[derive(Debug)] +enum ResolvableAddrParseError { + AddrParseError(AddrParseError), + ResolveError(io::Error), +} + +impl Display for ResolvableAddrParseError { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + match self { + ResolvableAddrParseError::AddrParseError(e) => write!(f, "{}", e), + ResolvableAddrParseError::ResolveError(e) => write!(f, "{}", e), + } + } +} + +impl From for ResolvableAddrParseError { + fn from(s: AddrParseError) -> Self { + ResolvableAddrParseError::AddrParseError(s) + } +} + +impl From for ResolvableAddrParseError { + fn from(s: io::Error) -> Self { + ResolvableAddrParseError::ResolveError(s) + } +} + +#[derive(Clone, Debug, Eq, Hash, PartialEq)] +struct ResolvableSocketAddrV4 { + addr: SocketAddrV4, + alias: Option, +} + +impl ResolvableSocketAddrV4 { + fn addr(&self) -> SocketAddrV4 { + self.addr + } +} + +impl Display for ResolvableSocketAddrV4 { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + match &self.alias { + Some(alias) => write!(f, "{} ({})", alias, self.addr), + None => write!(f, "{}", self.addr), + } + } +} + +impl FromStr for ResolvableSocketAddrV4 { + type Err = ResolvableAddrParseError; + fn from_str(s: &str) -> Result { + let has_alias; + let addr = match s.parse() { + Ok(addr) => { + has_alias = false; + + addr + } + Err(e) => { + has_alias = true; + + let v = s.split(':').collect::>(); + if v.len() != 2 { + return Err(ResolvableAddrParseError::from(e)); + } + + let port = match v[1].parse() { + Ok(port) => port, + Err(_) => return Err(ResolvableAddrParseError::from(e)), + }; + let ip = match dns_lookup::lookup_host(v[0]) { + Ok(addrs) => { + let mut ip = None; + + for addr in addrs { + if let IpAddr::V4(addr) = addr { + ip = Some(addr); + break; + } + } + + match ip { + Some(ip) => ip, + None => return Err(ResolvableAddrParseError::from(e)), + } + } + Err(e) => return Err(ResolvableAddrParseError::from(e)), + }; + + SocketAddrV4::new(ip, port) + } + }; + + let alias = match has_alias { + true => Some(String::from_str(s).unwrap()), + false => None, + }; + Ok(ResolvableSocketAddrV4 { addr, alias }) + } +} diff --git a/Other/pcap2socks/crate/src/packet/layer/arp.rs b/Other/pcap2socks/crate/src/packet/layer/arp.rs new file mode 100644 index 0000000..dec9baa --- /dev/null +++ b/Other/pcap2socks/crate/src/packet/layer/arp.rs @@ -0,0 +1,176 @@ +//! Support for serializing and deserializing the ARP layer. + +use super::{Layer, LayerKind, LayerKinds}; +use pnet::datalink::MacAddr; +use pnet::packet::arp::{self, ArpHardwareTypes, ArpOperations, ArpPacket, MutableArpPacket}; +use pnet::packet::ethernet::EtherTypes; +use std::clone::Clone; +use std::fmt::{self, Display, Formatter}; +use std::io; +use std::net::Ipv4Addr; + +/// Represents an ARP layer. +#[derive(Clone, Debug)] +pub struct Arp { + pub layer: arp::Arp, +} + +impl Arp { + /// Creates a `Arp` represents an ARP reply. + pub fn new_reply( + src_hardware_addr: MacAddr, + src_ip_addr: Ipv4Addr, + dst_hardware_addr: MacAddr, + dst_ip_addr: Ipv4Addr, + ) -> Arp { + let arp = arp::Arp { + hardware_type: ArpHardwareTypes::Ethernet, + protocol_type: EtherTypes::Ipv4, + hw_addr_len: 6, + proto_addr_len: 4, + operation: ArpOperations::Reply, + sender_hw_addr: src_hardware_addr, + sender_proto_addr: src_ip_addr, + target_hw_addr: dst_hardware_addr, + target_proto_addr: dst_ip_addr, + payload: vec![], + }; + Arp::from(arp) + } + + /// Creates a `Arp` represents an gratuitous ARP. + pub fn gratuitous_arp(hardware_addr: MacAddr, ip_addr: Ipv4Addr) -> Arp { + let arp = arp::Arp { + hardware_type: ArpHardwareTypes::Ethernet, + protocol_type: EtherTypes::Ipv4, + hw_addr_len: 6, + proto_addr_len: 4, + operation: ArpOperations::Request, + sender_hw_addr: hardware_addr, + sender_proto_addr: ip_addr, + target_hw_addr: MacAddr::zero(), + target_proto_addr: ip_addr, + payload: vec![], + }; + Arp::from(arp) + } + + /// Creates an `Arp` according to the given `Arp`. + pub fn from(arp: arp::Arp) -> Arp { + Arp { layer: arp } + } + + /// Creates an `Arp` according to the given ARP packet. + pub fn parse(packet: &ArpPacket) -> Arp { + let arp = arp::Arp { + hardware_type: packet.get_hardware_type(), + protocol_type: packet.get_protocol_type(), + hw_addr_len: packet.get_hw_addr_len(), + proto_addr_len: packet.get_proto_addr_len(), + operation: packet.get_operation(), + sender_hw_addr: packet.get_sender_hw_addr(), + sender_proto_addr: packet.get_sender_proto_addr(), + target_hw_addr: packet.get_target_hw_addr(), + target_proto_addr: packet.get_target_proto_addr(), + payload: vec![], + }; + Arp::from(arp) + } + + /// Creates an ARP reply according to a given `Arp`. + pub fn reply(layer: &Arp, hardware_addr: MacAddr) -> Arp { + let arp = arp::Arp { + hardware_type: layer.layer.hardware_type, + protocol_type: layer.layer.protocol_type, + hw_addr_len: layer.layer.hw_addr_len, + proto_addr_len: layer.layer.proto_addr_len, + operation: ArpOperations::Reply, + sender_hw_addr: hardware_addr, + sender_proto_addr: layer.layer.target_proto_addr, + target_hw_addr: layer.layer.sender_hw_addr, + target_proto_addr: layer.layer.sender_proto_addr, + payload: vec![], + }; + Arp::from(arp) + } + + /// Returns if the layer is an ARP request. + pub fn is_request(&self) -> bool { + self.layer.operation == ArpOperations::Request + } + + /// Returns if the layer is an ARP reply. + pub fn is_reply(&self) -> bool { + self.layer.operation == ArpOperations::Reply + } + + /// Returns if the layer is an ARP request of the given source and destination. + pub fn is_request_of(&self, src: Ipv4Addr, dst: Ipv4Addr) -> bool { + match self.layer.operation { + ArpOperations::Request => { + self.layer.sender_proto_addr == src && self.layer.target_proto_addr == dst + } + _ => false, + } + } + + /// Returns the source hardware address of the layer. + pub fn src_hardware_addr(&self) -> MacAddr { + self.layer.sender_hw_addr + } + + /// Returns the destination hardware address of the layer. + pub fn dst_hardware_addr(&self) -> MacAddr { + self.layer.target_hw_addr + } + + /// Returns the source of the layer. + pub fn src(&self) -> Ipv4Addr { + self.layer.sender_proto_addr + } + + /// Returns the destination of the layer. + pub fn dst(&self) -> Ipv4Addr { + self.layer.target_proto_addr + } +} + +impl Display for Arp { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + write!( + f, + "{}: {} -> {}, Operation = {}", + self.kind(), + self.layer.sender_proto_addr, + self.layer.target_proto_addr, + match self.layer.operation { + ArpOperations::Request => "Request", + ArpOperations::Reply => "Reply", + _ => "unknown", + } + ) + } +} + +impl Layer for Arp { + fn kind(&self) -> LayerKind { + LayerKinds::Arp + } + + fn len(&self) -> usize { + ArpPacket::packet_size(&self.layer) + } + + fn serialize(&self, buffer: &mut [u8], _: usize) -> io::Result { + let mut packet = MutableArpPacket::new(buffer) + .ok_or_else(|| io::Error::new(io::ErrorKind::WriteZero, "buffer too small"))?; + + packet.populate(&self.layer); + + Ok(self.len()) + } + + fn serialize_with_payload(&self, buffer: &mut [u8], _: &[u8], n: usize) -> io::Result { + self.serialize(buffer, n) + } +} diff --git a/Other/pcap2socks/crate/src/packet/layer/ethernet.rs b/Other/pcap2socks/crate/src/packet/layer/ethernet.rs new file mode 100644 index 0000000..41d8bbc --- /dev/null +++ b/Other/pcap2socks/crate/src/packet/layer/ethernet.rs @@ -0,0 +1,93 @@ +//! Support for serializing and deserializing the Ethernet layer. + +use super::{Layer, LayerKind, LayerKinds}; +use pnet::packet::ethernet::{self, EtherTypes, EthernetPacket, MutableEthernetPacket}; +use pnet::util::MacAddr; +use std::clone::Clone; +use std::fmt::{self, Display, Formatter}; +use std::io; + +/// Represents an Ethernet layer. +#[derive(Clone, Debug)] +pub struct Ethernet { + pub layer: ethernet::Ethernet, +} + +impl Ethernet { + /// Creates an `Ethernet`. + pub fn new(t: LayerKind, src: MacAddr, dst: MacAddr) -> Option { + let ethertype = match t { + LayerKinds::Arp => EtherTypes::Arp, + LayerKinds::Ipv4 => EtherTypes::Ipv4, + _ => return None, + }; + let ethernet = ethernet::Ethernet { + destination: dst, + source: src, + ethertype, + payload: vec![], + }; + Some(Ethernet::from(ethernet)) + } + + /// Creates an `Ethernet` according to the given `Ethernet`. + pub fn from(ethernet: ethernet::Ethernet) -> Ethernet { + Ethernet { layer: ethernet } + } + + /// Creates an `Ethernet` according to the given Ethernet packet. + pub fn parse(packet: &EthernetPacket) -> Ethernet { + let ethernet = ethernet::Ethernet { + destination: packet.get_destination(), + source: packet.get_source(), + ethertype: packet.get_ethertype(), + payload: vec![], + }; + Ethernet::from(ethernet) + } + + /// Returns the source of the layer. + pub fn src(&self) -> MacAddr { + self.layer.source + } + + /// Returns the destination of the layer. + pub fn dst(&self) -> MacAddr { + self.layer.destination + } +} + +impl Display for Ethernet { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + write!( + f, + "{}: {} -> {}", + LayerKinds::Ethernet, + self.layer.source, + self.layer.destination + ) + } +} + +impl Layer for Ethernet { + fn kind(&self) -> LayerKind { + LayerKinds::Ethernet + } + + fn len(&self) -> usize { + EthernetPacket::packet_size(&self.layer) + } + + fn serialize(&self, buffer: &mut [u8], _: usize) -> io::Result { + let mut packet = MutableEthernetPacket::new(buffer) + .ok_or_else(|| io::Error::new(io::ErrorKind::WriteZero, "buffer too small"))?; + + packet.populate(&self.layer); + + Ok(self.len()) + } + + fn serialize_with_payload(&self, buffer: &mut [u8], _: &[u8], n: usize) -> io::Result { + self.serialize(buffer, n) + } +} diff --git a/Other/pcap2socks/crate/src/packet/layer/icmpv4.rs b/Other/pcap2socks/crate/src/packet/layer/icmpv4.rs new file mode 100644 index 0000000..d145960 --- /dev/null +++ b/Other/pcap2socks/crate/src/packet/layer/icmpv4.rs @@ -0,0 +1,318 @@ +//! Support for serializing and deserializing the ICMPv4 layer. + +use super::{Layer, LayerKind, LayerKinds}; +use pnet::packet::icmp::destination_unreachable; +use pnet::packet::icmp::echo_reply; +use pnet::packet::icmp::echo_request; +use pnet::packet::icmp::{self, Icmp, IcmpPacket, IcmpTypes, MutableIcmpPacket}; +use pnet::packet::ip::{IpNextHeaderProtocol, IpNextHeaderProtocols}; +use pnet::packet::ipv4::Ipv4Packet; +use pnet::packet::tcp::TcpPacket; +use pnet::packet::udp::UdpPacket; +use pnet::packet::{FromPacket, Packet}; +use std::clone::Clone; +use std::fmt::{self, Display, Formatter}; +use std::io; +use std::net::{Ipv4Addr, SocketAddrV4}; + +use super::ipv4::Ipv4; +use super::tcp::Tcp; +use super::udp::Udp; +use super::Layers; + +/// Represents an ICMPv4 layer. +#[derive(Clone, Debug)] +pub struct Icmpv4 { + layer: Icmp, +} + +impl Icmpv4 { + /// Creates a `Icmpv4` represents an ICMPv4 echo reply. + pub fn new_echo_reply(identifier: u16, sequence_number: u16) -> Icmpv4 { + let mut payload = vec![0u8; 4]; + payload[..2].copy_from_slice(&identifier.to_ne_bytes()); + payload[2..].copy_from_slice(&sequence_number.to_ne_bytes()); + let icmp = Icmp { + icmp_type: IcmpTypes::EchoReply, + icmp_code: echo_reply::IcmpCodes::NoCode, + checksum: 0, + payload, + }; + Icmpv4::from(icmp) + } + + /// Creates a `Icmpv4` represents an ICMPv4 destination host unreachable. + pub fn new_destination_host_unreachable(payload: &[u8]) -> Icmpv4 { + let mut next_payload = vec![0u8; 4 + payload.len()]; + next_payload[4..].copy_from_slice(payload); + let icmp = Icmp { + icmp_type: IcmpTypes::DestinationUnreachable, + icmp_code: destination_unreachable::IcmpCodes::DestinationHostUnreachable, + checksum: 0, + payload: next_payload, + }; + Icmpv4::from(icmp) + } + + /// Creates a `Icmpv4` represents an ICMPv4 destination port unreachable. + pub fn new_destination_port_unreachable(payload: &[u8]) -> Icmpv4 { + let mut next_payload = vec![0u8; 4 + payload.len()]; + next_payload[4..].copy_from_slice(payload); + let icmp = Icmp { + icmp_type: IcmpTypes::DestinationUnreachable, + icmp_code: destination_unreachable::IcmpCodes::DestinationPortUnreachable, + checksum: 0, + payload: next_payload, + }; + Icmpv4::from(icmp) + } + + /// Creates an `Icmpv4` according to the given `Icmp`. + pub fn from(icmp: Icmp) -> Icmpv4 { + Icmpv4 { layer: icmp } + } + + /// Creates an `Icmpv4` according to the given ICMPv4 packet. + pub fn parse(packet: &IcmpPacket) -> Icmpv4 { + let icmp = packet.from_packet(); + + Icmpv4::from(icmp) + } + + /// Returns the string represents the description of the layer. + pub fn description(&self) -> String { + if self.is_echo_reply() { + String::from("Echo reply") + } else if self.is_destination_host_unreachable() { + String::from("Destination host unreachable") + } else if self.is_destination_port_unreachable() { + String::from("Destination port unreachable") + } else if self.is_fragmentation_required_and_df_flag_set() { + String::from("Fragmentation required, and DF flag set") + } else if self.is_echo_request() { + String::from("Echo request") + } else { + format!( + "Type = {}, Code = {}", + self.layer.icmp_type.0, self.layer.icmp_code.0 + ) + } + } + + /// Returns the identifier (NE) of the layer. + pub fn identifier(&self) -> Option { + if self.is_echo_reply() || self.is_echo_request() { + let buffer = [self.layer.payload[0], self.layer.payload[1]]; + Some(u16::from_ne_bytes(buffer)) + } else { + None + } + } + + /// Returns the sequence number (NE) of the layer. + pub fn sequence_number(&self) -> Option { + if self.is_echo_reply() || self.is_echo_request() { + let buffer = [self.layer.payload[2], self.layer.payload[3]]; + Some(u16::from_ne_bytes(buffer)) + } else { + None + } + } + + /// Returns the next-hop MTU of the layer. + pub fn next_hop_mtu(&self) -> Option { + if self.is_fragmentation_required_and_df_flag_set() { + let buffer = [self.layer.payload[2], self.layer.payload[3]]; + Some(u16::from_be_bytes(buffer)) + } else { + None + } + } + + /// Returns the source IP address in the payload of the layer. + pub fn src_ip_addr(&self) -> Option { + if self.is_destination_port_unreachable() + || self.is_fragmentation_required_and_df_flag_set() + { + let (ipv4, _) = self.parse_payload().unwrap(); + Some(ipv4.src()) + } else { + None + } + } + + /// Returns the destination IP address in the payload of the layer. + pub fn dst_ip_addr(&self) -> Option { + if self.is_destination_port_unreachable() + || self.is_fragmentation_required_and_df_flag_set() + { + let (ipv4, _) = self.parse_payload().unwrap(); + Some(ipv4.dst()) + } else { + None + } + } + + /// Returns the next level protocol in the payload of the layer. + pub fn next_level_protocol(&self) -> Option { + if self.is_destination_port_unreachable() + || self.is_fragmentation_required_and_df_flag_set() + { + let (ipv4, _) = self.parse_payload().unwrap(); + Some(ipv4.next_level_protocol()) + } else { + None + } + } + + /// Returns the next level layer kind in the payload of the layer. + pub fn next_level_layer_kind(&self) -> Option { + if self.is_destination_port_unreachable() + || self.is_fragmentation_required_and_df_flag_set() + { + let (ipv4, _) = self.parse_payload().unwrap(); + ipv4.next_level_layer_kind() + } else { + None + } + } + + /// Returns the source in the payload of the layer. + pub fn src(&self) -> Option { + if self.is_destination_port_unreachable() + || self.is_fragmentation_required_and_df_flag_set() + { + let (_, transport) = self.parse_payload().unwrap(); + match transport { + Some(transport) => match transport { + Layers::Tcp(ref tcp) => Some(SocketAddrV4::new(tcp.src_ip_addr(), tcp.src())), + Layers::Udp(ref udp) => Some(SocketAddrV4::new(udp.src_ip_addr(), udp.src())), + _ => None, + }, + None => None, + } + } else { + None + } + } + + /// Returns the destination in the payload of the layer. + pub fn dst(&self) -> Option { + if self.is_destination_port_unreachable() + || self.is_fragmentation_required_and_df_flag_set() + { + let (_, transport) = self.parse_payload().unwrap(); + match transport { + Some(transport) => match transport { + Layers::Tcp(ref tcp) => Some(SocketAddrV4::new(tcp.dst_ip_addr(), tcp.dst())), + Layers::Udp(ref udp) => Some(SocketAddrV4::new(udp.dst_ip_addr(), udp.dst())), + _ => None, + }, + None => None, + } + } else { + None + } + } + + fn parse_payload(&self) -> Option<(Ipv4, Option)> { + if self.layer.payload.len() < 4 { + return None; + } + let payload = &self.layer.payload[4..]; + match Ipv4Packet::new(payload) { + Some(ref ipv4_packet) => { + let ipv4 = Ipv4::parse(ipv4_packet); + // Fragment + if !ipv4.is_fragment() { + let transport = match ipv4_packet.get_next_level_protocol() { + IpNextHeaderProtocols::Icmp => { + IcmpPacket::new(ipv4_packet.payload()) + .map(|icmp_packet| Layers::Icmpv4(Icmpv4::parse(&icmp_packet))) + } + IpNextHeaderProtocols::Tcp => { + TcpPacket::new(ipv4_packet.payload()) + .map(|tcp_packet| Layers::Tcp(Tcp::parse(&tcp_packet, &ipv4))) + }, + IpNextHeaderProtocols::Udp => { + UdpPacket::new(ipv4_packet.payload()) + .map(|udp_packet| Layers::Udp(Udp::parse(&udp_packet, &ipv4))) + }, + _ => None, + }; + + Some((ipv4, transport)) + } else { + Some((ipv4, None)) + } + } + None => None, + } + } + + /// Returns if the layer an ICMPv4 echo reply. + pub fn is_echo_reply(&self) -> bool { + self.layer.icmp_type == IcmpTypes::EchoReply + && self.layer.icmp_code == echo_reply::IcmpCodes::NoCode + } + + /// Returns if the layer is an ICMPv4 destination host unreachable. + pub fn is_destination_host_unreachable(&self) -> bool { + self.layer.icmp_type == IcmpTypes::DestinationUnreachable + && self.layer.icmp_code + == destination_unreachable::IcmpCodes::DestinationHostUnreachable + } + + /// Returns if the layer is an ICMPv4 destination port unreachable. + pub fn is_destination_port_unreachable(&self) -> bool { + self.layer.icmp_type == IcmpTypes::DestinationUnreachable + && self.layer.icmp_code + == destination_unreachable::IcmpCodes::DestinationPortUnreachable + } + + /// Returns if the layer is an ICMPv4 fragmentation required, and DF flag set. + pub fn is_fragmentation_required_and_df_flag_set(&self) -> bool { + self.layer.icmp_type == IcmpTypes::DestinationUnreachable + && self.layer.icmp_code + == destination_unreachable::IcmpCodes::FragmentationRequiredAndDFFlagSet + } + + /// Returns if the layer is an ICMPv4 echo request. + pub fn is_echo_request(&self) -> bool { + self.layer.icmp_type == IcmpTypes::EchoRequest + && self.layer.icmp_code == echo_request::IcmpCodes::NoCode + } +} + +impl Display for Icmpv4 { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + write!(f, "{}: {}", LayerKinds::Icmpv4, self.description()) + } +} + +impl Layer for Icmpv4 { + fn kind(&self) -> LayerKind { + LayerKinds::Icmpv4 + } + + fn len(&self) -> usize { + IcmpPacket::packet_size(&self.layer) + } + + fn serialize(&self, buffer: &mut [u8], _: usize) -> io::Result { + let mut packet = MutableIcmpPacket::new(buffer) + .ok_or_else(|| io::Error::new(io::ErrorKind::WriteZero, "buffer too small"))?; + + packet.populate(&self.layer); + + // Compute checksum + let checksum = icmp::checksum(&packet.to_immutable()); + packet.set_checksum(checksum); + + Ok(self.len()) + } + + fn serialize_with_payload(&self, buffer: &mut [u8], _: &[u8], n: usize) -> io::Result { + self.serialize(buffer, n) + } +} diff --git a/Other/pcap2socks/crate/src/packet/layer/ipv4.rs b/Other/pcap2socks/crate/src/packet/layer/ipv4.rs new file mode 100644 index 0000000..c9a57bf --- /dev/null +++ b/Other/pcap2socks/crate/src/packet/layer/ipv4.rs @@ -0,0 +1,263 @@ +//! Support for serializing and deserializing the IPv4 layer. + +use super::{Layer, LayerKind, LayerKinds}; +use pnet::packet::ip::{IpNextHeaderProtocol, IpNextHeaderProtocols}; +use pnet::packet::ipv4::{self, Ipv4Flags, Ipv4OptionPacket, Ipv4Packet, MutableIpv4Packet}; +use std::clone::Clone; +use std::fmt::{self, Display, Formatter}; +use std::io; +use std::net::Ipv4Addr; + +/// Represents the TTL in the sent packets. +const TTL: u8 = 128; + +/// Represents an IPv4 layer. +#[derive(Clone, Debug)] +pub struct Ipv4 { + layer: ipv4::Ipv4, +} + +impl Ipv4 { + /// Creates an `Ipv4`. + pub fn new(identification: u16, t: LayerKind, src: Ipv4Addr, dst: Ipv4Addr) -> Option { + let next_level_protocol = match t { + LayerKinds::Icmpv4 => IpNextHeaderProtocols::Icmp, + LayerKinds::Tcp => IpNextHeaderProtocols::Tcp, + LayerKinds::Udp => IpNextHeaderProtocols::Udp, + _ => return None, + }; + let d_ipv4 = ipv4::Ipv4 { + version: 4, + header_length: 5, + dscp: 0, + ecn: 0, + total_length: 0, + identification, + flags: 0, + fragment_offset: 0, + ttl: TTL, + next_level_protocol, + checksum: 0, + source: src, + destination: dst, + options: vec![], + payload: vec![], + }; + Some(Ipv4::from(d_ipv4)) + } + + /// Creates an `Ipv4` represents an IPv4 fragment. + pub fn new_more_fragment( + identification: u16, + t: LayerKind, + fragment_offset: u16, + src: Ipv4Addr, + dst: Ipv4Addr, + ) -> Option { + let ipv4 = Ipv4::new(identification, t, src, dst); + if let Some(mut ipv4) = ipv4 { + ipv4.layer.flags = Ipv4Flags::MoreFragments; + ipv4.layer.fragment_offset = fragment_offset; + return Some(ipv4); + }; + + None + } + + /// Creates an `Ipv4` represents an IPv4 last fragment. + pub fn new_last_fragment( + identification: u16, + t: LayerKind, + fragment_offset: u16, + src: Ipv4Addr, + dst: Ipv4Addr, + ) -> Option { + let ipv4 = Ipv4::new(identification, t, src, dst); + if let Some(mut ipv4) = ipv4 { + ipv4.layer.fragment_offset = fragment_offset; + return Some(ipv4); + }; + + None + } + + /// Creates an `Ipv4` according to the given `Ipv4`. + pub fn from(ipv4: ipv4::Ipv4) -> Ipv4 { + Ipv4 { layer: ipv4 } + } + + /// Creates an `Ipv4` according to the given IPv4 packet. + pub fn parse(packet: &Ipv4Packet) -> Ipv4 { + let d_ipv4 = ipv4::Ipv4 { + version: packet.get_version(), + header_length: packet.get_header_length(), + dscp: packet.get_dscp(), + ecn: packet.get_ecn(), + total_length: packet.get_total_length(), + identification: packet.get_identification(), + flags: packet.get_flags(), + fragment_offset: packet.get_fragment_offset(), + ttl: packet.get_ttl(), + next_level_protocol: packet.get_next_level_protocol(), + checksum: packet.get_checksum(), + source: packet.get_source(), + destination: packet.get_destination(), + options: packet.get_options(), + payload: vec![], + }; + Ipv4::from(d_ipv4) + } + + /// Returns the minimum of the layer when converted into a byte-array. + pub fn minimum_len() -> usize { + 20 + } + + /// Returns the total length of the layer. + pub fn total_length(&self) -> u16 { + self.layer.total_length + } + + /// Returns the identification of the layer. + pub fn identification(&self) -> u16 { + self.layer.identification + } + + /// Returns if more fragments are follows this layer. + pub fn is_more_fragment(&self) -> bool { + self.layer.flags & Ipv4Flags::MoreFragments != 0 + } + + /// Returns the fragment offset of the layer. + pub fn fragment_offset(&self) -> u16 { + self.layer.fragment_offset + } + + /// Returns if the layer is a IPv4 fragment. + pub fn is_fragment(&self) -> bool { + self.is_more_fragment() || self.fragment_offset() > 0 + } + + /// Returns the next level protocol of the layer. + pub fn next_level_protocol(&self) -> IpNextHeaderProtocol { + self.layer.next_level_protocol + } + + /// Returns the next level layer kind of the layer. + pub fn next_level_layer_kind(&self) -> Option { + match self.layer.next_level_protocol { + IpNextHeaderProtocols::Icmp => Some(LayerKinds::Icmpv4), + IpNextHeaderProtocols::Tcp => Some(LayerKinds::Tcp), + IpNextHeaderProtocols::Udp => Some(LayerKinds::Udp), + _ => None, + } + } + + /// Returns the source of the layer. + pub fn src(&self) -> Ipv4Addr { + self.layer.source + } + + /// Returns the destination of the layer. + pub fn dst(&self) -> Ipv4Addr { + self.layer.destination + } +} + +impl Display for Ipv4 { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + let mut fragment = String::new(); + if self.is_fragment() { + fragment = format!(", Fragment = {}", self.fragment_offset() * 8); + } + + write!( + f, + "{}: {} -> {}, Length = {}{}", + LayerKinds::Ipv4, + self.layer.source, + self.layer.destination, + self.layer.total_length, + fragment + ) + } +} + +impl Layer for Ipv4 { + fn kind(&self) -> LayerKind { + LayerKinds::Ipv4 + } + + fn len(&self) -> usize { + let mut ipv4_size = Ipv4Packet::packet_size(&self.layer); + let mut ipv4_options_size = 0; + for option in &self.layer.options { + ipv4_size -= 1; + ipv4_options_size += Ipv4OptionPacket::packet_size(option); + } + + ipv4_size + ipv4_options_size + } + + fn serialize(&self, buffer: &mut [u8], n: usize) -> io::Result { + let mut packet = MutableIpv4Packet::new(buffer) + .ok_or_else(|| io::Error::new(io::ErrorKind::WriteZero, "buffer too small"))?; + + packet.populate(&self.layer); + + // Fix length + let header_length = self.len(); + if header_length / 4 > u8::MAX as usize { + return Err(io::Error::new(io::ErrorKind::Other, "IPv4 too big")); + } + packet.set_header_length((header_length / 4) as u8); + if n > u16::MAX as usize { + return Err(io::Error::new( + io::ErrorKind::InvalidInput, + "length too big", + )); + } + packet.set_total_length(n as u16); + + // Compute checksum + let checksum = ipv4::checksum(&packet.to_immutable()); + packet.set_checksum(checksum); + + Ok(header_length) + } + + fn serialize_with_payload( + &self, + buffer: &mut [u8], + payload: &[u8], + n: usize, + ) -> io::Result { + let mut packet = MutableIpv4Packet::new(buffer) + .ok_or_else(|| io::Error::new(io::ErrorKind::WriteZero, "buffer too small"))?; + + packet.populate(&self.layer); + + // Fix length + let header_length = self.len(); + if header_length / 4 > u8::MAX as usize { + return Err(io::Error::new(io::ErrorKind::Other, "IPv4 too big")); + } + packet.set_header_length((header_length / 4) as u8); + if n > u16::MAX as usize { + return Err(io::Error::new( + io::ErrorKind::InvalidInput, + "length too big", + )); + } + packet.set_total_length(n as u16); + + // Copy payload + packet.set_payload(payload); + + // Compute checksum + let checksum = ipv4::checksum(&packet.to_immutable()); + packet.set_checksum(checksum); + + Ok(header_length) + } +} diff --git a/Other/pcap2socks/crate/src/packet/layer/mod.rs b/Other/pcap2socks/crate/src/packet/layer/mod.rs new file mode 100644 index 0000000..1594435 --- /dev/null +++ b/Other/pcap2socks/crate/src/packet/layer/mod.rs @@ -0,0 +1,158 @@ +//! Support for serializing and deserializing layers. + +use std::clone::Clone; +use std::cmp::{Eq, PartialEq}; +use std::fmt::{self, Display, Formatter}; +use std::hash::Hash; +use std::io; + +pub mod arp; +pub mod ethernet; +pub mod icmpv4; +pub mod ipv4; +pub mod tcp; +pub mod udp; + +/// Represents the kind of the layer. +#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)] +pub struct LayerKind(u8); + +impl Display for LayerKind { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + write!( + f, + "{}", + match *self { + LayerKinds::Ethernet => "Ethernet", + LayerKinds::Arp => "ARP", + LayerKinds::Ipv4 => "IPv4", + LayerKinds::Icmpv4 => "ICMPv4", + LayerKinds::Tcp => "TCP", + LayerKinds::Udp => "UDP", + _ => "unknown", + } + ) + } +} + +#[allow(non_snake_case)] +#[allow(non_upper_case_globals)] +/// Represents all the layer kinds. +pub mod LayerKinds { + use super::LayerKind; + + /// Represents the layer kind of Ethernet. + pub const Ethernet: LayerKind = LayerKind(0); + /// Represents the layer kind of ARP. + pub const Arp: LayerKind = LayerKind(1); + /// Represents the layer kind of IPv4. + pub const Ipv4: LayerKind = LayerKind(2); + /// Represents the layer kind of ICMPv4. + pub const Icmpv4: LayerKind = LayerKind(3); + /// Represents the layer kind of TCP. + pub const Tcp: LayerKind = LayerKind(4); + /// Represents the layer kind of UDP. + pub const Udp: LayerKind = LayerKind(5); +} + +/// Represents a layer. +#[allow(clippy::len_without_is_empty)] +pub trait Layer: Display { + /// Returns the kind of the layer. + fn kind(&self) -> LayerKind; + + /// Returns The length of the layer when converted into a byte-array. + fn len(&self) -> usize; + + /// Serialize the layer into a byte-array. + fn serialize(&self, buffer: &mut [u8], n: usize) -> io::Result; + + /// Serialize the layer into a byte-array with payload. + fn serialize_with_payload( + &self, + buffer: &mut [u8], + payload: &[u8], + n: usize, + ) -> io::Result; +} + +#[derive(Clone, Debug)] +/// Enumeration of layers. +pub enum Layers { + /// Represents the Ethernet layer. + Ethernet(ethernet::Ethernet), + /// Represents the ARP layer. + Arp(arp::Arp), + /// Represents the IPv4 layer. + Ipv4(ipv4::Ipv4), + /// Represents the ICMPv4 layer. + Icmpv4(icmpv4::Icmpv4), + /// Represents the TCP layer. + Tcp(tcp::Tcp), + /// Represents the UDP layer. + Udp(udp::Udp), +} + +impl Display for Layers { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + match self { + Layers::Ethernet(ref layer) => layer.fmt(f), + Layers::Arp(ref layer) => layer.fmt(f), + Layers::Ipv4(ref layer) => layer.fmt(f), + Layers::Icmpv4(ref layer) => layer.fmt(f), + Layers::Tcp(ref layer) => layer.fmt(f), + Layers::Udp(ref layer) => layer.fmt(f), + } + } +} + +impl Layer for Layers { + fn kind(&self) -> LayerKind { + match self { + Layers::Ethernet(ref layer) => layer.kind(), + Layers::Arp(ref layer) => layer.kind(), + Layers::Ipv4(ref layer) => layer.kind(), + Layers::Icmpv4(ref layer) => layer.kind(), + Layers::Tcp(ref layer) => layer.kind(), + Layers::Udp(ref layer) => layer.kind(), + } + } + + fn len(&self) -> usize { + match self { + Layers::Ethernet(ref layer) => layer.len(), + Layers::Arp(ref layer) => layer.len(), + Layers::Ipv4(ref layer) => layer.len(), + Layers::Icmpv4(ref layer) => layer.len(), + Layers::Tcp(ref layer) => layer.len(), + Layers::Udp(ref layer) => layer.len(), + } + } + + fn serialize(&self, buffer: &mut [u8], n: usize) -> io::Result { + match self { + Layers::Ethernet(ref layer) => layer.serialize(buffer, n), + Layers::Arp(ref layer) => layer.serialize(buffer, n), + Layers::Ipv4(ref layer) => layer.serialize(buffer, n), + Layers::Icmpv4(ref layer) => layer.serialize(buffer, n), + Layers::Tcp(ref layer) => layer.serialize(buffer, n), + Layers::Udp(ref layer) => layer.serialize(buffer, n), + } + } + + fn serialize_with_payload( + &self, + buffer: &mut [u8], + payload: &[u8], + n: usize, + ) -> io::Result { + match self { + Layers::Ethernet(ref layer) => layer.serialize_with_payload(buffer, payload, n), + Layers::Arp(ref layer) => layer.serialize_with_payload(buffer, payload, n), + Layers::Ipv4(ref layer) => layer.serialize_with_payload(buffer, payload, n), + Layers::Icmpv4(ref layer) => layer.serialize_with_payload(buffer, payload, n), + Layers::Tcp(ref layer) => layer.serialize_with_payload(buffer, payload, n), + Layers::Udp(ref layer) => layer.serialize_with_payload(buffer, payload, n), + } + } +} diff --git a/Other/pcap2socks/crate/src/packet/layer/tcp.rs b/Other/pcap2socks/crate/src/packet/layer/tcp.rs new file mode 100644 index 0000000..04c2e32 --- /dev/null +++ b/Other/pcap2socks/crate/src/packet/layer/tcp.rs @@ -0,0 +1,585 @@ +//! Support for serializing and deserializing the TCP layer. + +use super::ipv4::Ipv4; +use super::{Layer, LayerKind, LayerKinds}; +use pnet::packet::tcp::{ + self, MutableTcpOptionPacket, MutableTcpPacket, TcpFlags, TcpOption, TcpOptionNumber, + TcpOptionNumbers, TcpOptionPacket, TcpPacket, +}; +use std::clone::Clone; +use std::cmp::min; +use std::fmt::{self, Display, Formatter}; +use std::io; +use std::net::Ipv4Addr; + +/// Represents a TCP packet. +#[derive(Clone, Debug)] +pub struct Tcp { + layer: tcp::Tcp, + src: Ipv4Addr, + dst: Ipv4Addr, +} + +impl Tcp { + /// Creates a `Tcp` represents a TCP ACK. + pub fn new_ack( + src: u16, + dst: u16, + sequence: u32, + acknowledgement: u32, + window: u16, + sacks: Option>, + ts: Option<(u32, u32)>, + ) -> Tcp { + let mut d_tcp = tcp::Tcp { + source: src, + destination: dst, + sequence, + acknowledgement, + data_offset: 5, + reserved: 0, + flags: TcpFlags::ACK, + window, + checksum: 0, + urgent_ptr: 0, + options: vec![], + payload: vec![], + }; + // TCP options + let is_ts = ts.is_some(); + let is_sacks = match sacks { + Some(ref sacks) => !sacks.is_empty(), + None => false, + }; + + if is_ts && is_sacks { + let ts = ts.unwrap(); + let sacks = sacks.unwrap(); + + // Trim sacks + let size = min(3, sacks.len()); + let mut vector = Vec::with_capacity(size * 2); + + for (a, b) in sacks.into_iter().take(size) { + vector.push(a); + vector.push(b); + } + + d_tcp.data_offset += 3 + vector.len() as u8; + d_tcp.options.push(TcpOption::timestamp(ts.0, ts.1)); + d_tcp + .options + .push(TcpOption::selective_ack(vector.as_slice())); + } else if is_ts { + let ts = ts.unwrap(); + + d_tcp.data_offset += 3; + d_tcp.options.push(TcpOption::nop()); + d_tcp.options.push(TcpOption::nop()); + d_tcp.options.push(TcpOption::timestamp(ts.0, ts.1)); + } else if is_sacks { + let sacks = sacks.unwrap(); + + // Trim sacks + let size = min(4, sacks.len()); + let mut vector = Vec::with_capacity(size * 2); + for (a, b) in sacks.into_iter().take(size) { + vector.push(a); + vector.push(b); + } + + d_tcp.data_offset += 1 + vector.len() as u8; + d_tcp.options.push(TcpOption::nop()); + d_tcp.options.push(TcpOption::nop()); + d_tcp + .options + .push(TcpOption::selective_ack(vector.as_slice())); + } + Tcp::from(d_tcp) + } + + /// Creates a `Tcp` represents a TCP ACK/SYN. + #[allow(clippy::too_many_arguments)] + pub fn new_ack_syn( + src: u16, + dst: u16, + sequence: u32, + acknowledgement: u32, + window: u16, + mss: Option, + wscale: Option, + sack_perm: bool, + ts: Option<(u32, u32)>, + ) -> Tcp { + let mut tcp = Tcp::new_ack(src, dst, sequence, acknowledgement, window, None, None); + tcp.layer.flags |= TcpFlags::SYN; + // TCP options + if let Some(mss) = mss { + tcp.layer.data_offset += 1; + tcp.layer.options.push(TcpOption::mss(mss)); + } + if let Some(wscale) = wscale { + tcp.layer.data_offset += 1; + tcp.layer.options.push(TcpOption::nop()); + tcp.layer.options.push(TcpOption::wscale(wscale)); + } + let is_ts = ts.is_some(); + if sack_perm && is_ts { + let ts = ts.unwrap(); + + tcp.layer.data_offset += 3; + tcp.layer.options.push(TcpOption::sack_perm()); + tcp.layer.options.push(TcpOption::timestamp(ts.0, ts.1)); + } else if sack_perm { + tcp.layer.data_offset += 1; + tcp.layer.options.push(TcpOption::nop()); + tcp.layer.options.push(TcpOption::nop()); + tcp.layer.options.push(TcpOption::sack_perm()); + } else if is_ts { + let ts = ts.unwrap(); + + tcp.layer.data_offset += 3; + tcp.layer.options.push(TcpOption::nop()); + tcp.layer.options.push(TcpOption::nop()); + tcp.layer.options.push(TcpOption::timestamp(ts.0, ts.1)); + } + + tcp + } + + /// Creates a `Tcp` represents a TCP ACK/RST. + pub fn new_ack_rst( + src: u16, + dst: u16, + sequence: u32, + acknowledgement: u32, + window: u16, + ts: Option<(u32, u32)>, + ) -> Tcp { + let mut tcp = Tcp::new_rst(src, dst, sequence, acknowledgement, window, ts); + tcp.layer.flags |= TcpFlags::ACK; + tcp + } + + /// Creates a `Tcp` represents a TCP ACK/FIN. + pub fn new_ack_fin( + src: u16, + dst: u16, + sequence: u32, + acknowledgement: u32, + window: u16, + ts: Option<(u32, u32)>, + ) -> Tcp { + let mut tcp = Tcp::new_ack(src, dst, sequence, acknowledgement, window, None, ts); + tcp.layer.flags |= TcpFlags::FIN; + tcp + } + + /// Creates a `Tcp` represents a TCP RST. + pub fn new_rst( + src: u16, + dst: u16, + sequence: u32, + acknowledgement: u32, + window: u16, + ts: Option<(u32, u32)>, + ) -> Tcp { + let mut tcp = Tcp::new_ack(src, dst, sequence, acknowledgement, window, None, ts); + tcp.layer.flags = TcpFlags::RST; + tcp + } + + /// Creates a `Tcp` represents a TCP FIN. + pub fn new_fin( + src: u16, + dst: u16, + sequence: u32, + acknowledgement: u32, + window: u16, + ts: Option<(u32, u32)>, + ) -> Tcp { + let mut tcp = Tcp::new_ack(src, dst, sequence, acknowledgement, window, None, ts); + tcp.layer.flags = TcpFlags::FIN; + tcp + } + + /// Creates a `Tcp` according to the given `Tcp`. + pub fn from(tcp: tcp::Tcp) -> Tcp { + Tcp { + layer: tcp, + src: Ipv4Addr::UNSPECIFIED, + dst: Ipv4Addr::UNSPECIFIED, + } + } + + /// Creates a `Tcp` according to the given TCP packet and the `Ipv4`. + pub fn parse(packet: &TcpPacket, ipv4: &Ipv4) -> Tcp { + let d_tcp = tcp::Tcp { + source: packet.get_source(), + destination: packet.get_destination(), + sequence: packet.get_sequence(), + acknowledgement: packet.get_acknowledgement(), + data_offset: packet.get_data_offset(), + reserved: packet.get_reserved(), + flags: packet.get_flags(), + window: packet.get_window(), + checksum: packet.get_checksum(), + urgent_ptr: packet.get_urgent_ptr(), + options: packet.get_options(), + payload: vec![], + }; + let mut tcp = Tcp::from(d_tcp); + tcp.set_ipv4_layer(ipv4); + + tcp + } + + /// Returns the minimum of the layer when converted into a byte-array. + pub fn minimum_len() -> usize { + 20 + } + + /// Sets the source and destination IP address for the layer with the given `Ipv4`. + pub fn set_ipv4_layer(&mut self, ipv4: &Ipv4) { + self.src = ipv4.src(); + self.dst = ipv4.dst(); + } + + /// Returns the source IP address of the layer. + pub fn src_ip_addr(&self) -> Ipv4Addr { + self.src + } + + /// Returns the destination IP address of the layer. + pub fn dst_ip_addr(&self) -> Ipv4Addr { + self.dst + } + + /// Returns the source of the layer. + pub fn src(&self) -> u16 { + self.layer.source + } + + /// Returns the destination of the layer. + pub fn dst(&self) -> u16 { + self.layer.destination + } + + /// Returns the sequence of the layer. + pub fn sequence(&self) -> u32 { + self.layer.sequence + } + + /// Returns the acknowledgement of the layer. + pub fn acknowledgement(&self) -> u32 { + self.layer.acknowledgement + } + + /// Returns the string represents the flags of the layer. + pub fn flag_string(&self) -> String { + let mut flags = String::from("["); + if self.is_syn() { + flags += "S"; + } + if self.is_rst() { + flags += "R"; + } + if self.is_fin() { + flags += "F"; + } + if self.is_ack() { + flags += "."; + } + flags += "]"; + + flags + } + + /// Returns the window size of the layer. + pub fn window(&self) -> u16 { + self.layer.window + } + + /// Returns the MSS of the layer. This function allocates space for serializing options. + pub fn mss(&self) -> Option { + let mut buffer = vec![0u8; 40]; + let mut packet = MutableTcpOptionPacket::new(buffer.as_mut_slice()).unwrap(); + for option in &self.layer.options { + packet.populate(option); + + #[allow(clippy::single_match)] + match packet.get_number() { + TcpOptionNumbers::MSS => { + let mss = bytes_to_u16(&buffer[2..4]); + + return Some(mss); + } + _ => {} + } + } + + None + } + + /// Returns the window scale of the layer. This function allocates space for serializing options. + pub fn wscale(&self) -> Option { + let mut buffer = vec![0u8; 40]; + let mut packet = MutableTcpOptionPacket::new(buffer.as_mut_slice()).unwrap(); + for option in &self.layer.options { + packet.populate(option); + + #[allow(clippy::single_match)] + match packet.get_number() { + TcpOptionNumbers::WSCALE => { + let wscale = buffer[2]; + + return Some(wscale); + } + _ => {} + } + } + + None + } + + /// Returns the selective acknowledgements of the layer. This function allocates space for + /// serializing options. + pub fn sack(&self) -> Option> { + let mut buffer = vec![0u8; 40]; + let mut packet = MutableTcpOptionPacket::new(buffer.as_mut_slice()).unwrap(); + for option in &self.layer.options { + packet.populate(option); + + #[allow(clippy::single_match)] + match packet.get_number() { + TcpOptionNumbers::SACK => { + let mut vector = Vec::with_capacity(4); + + let pair_length = (buffer[1] as usize - 2) / 8; + for i in 0..pair_length { + let left = bytes_to_u32(&buffer[2 + 8 * i..2 + 8 * i + 4]); + let right = bytes_to_u32(&buffer[2 + 8 * i + 4..2 + 8 * i + 8]); + vector.push((left, right)); + } + + return Some(vector); + } + _ => {} + } + } + + None + } + + /// Returns the timestamp of the layer. This function allocates space for serializing options. + pub fn ts(&self) -> Option { + let mut buffer = vec![0u8; 40]; + let mut packet = MutableTcpOptionPacket::new(buffer.as_mut_slice()).unwrap(); + for option in &self.layer.options { + packet.populate(option); + + #[allow(clippy::single_match)] + match packet.get_number() { + TcpOptionNumbers::TIMESTAMPS => { + let ts = bytes_to_u32(&buffer[2..6]); + + return Some(ts); + } + _ => {} + } + } + + None + } + + /// Returns the timestamp echo reply of the layer. This function allocates space for serializing + /// options. + pub fn ts_ecr(&self) -> Option { + let mut buffer = vec![0u8; 40]; + let mut packet = MutableTcpOptionPacket::new(buffer.as_mut_slice()).unwrap(); + for option in &self.layer.options { + packet.populate(option); + + #[allow(clippy::single_match)] + match packet.get_number() { + TcpOptionNumbers::TIMESTAMPS => { + let ts = bytes_to_u32(&buffer[6..10]); + + return Some(ts); + } + _ => {} + } + } + + None + } + + /// Returns if the layer is a TCP acknowledgement. + pub fn is_ack(&self) -> bool { + self.layer.flags & TcpFlags::ACK != 0 + } + + /// Returns if the layer is a TCP acknowledgement and finish. + pub fn is_ack_fin(&self) -> bool { + self.is_ack() && self.is_fin() + } + + /// Returns if the layer is a TCP reset. + pub fn is_rst(&self) -> bool { + self.layer.flags & TcpFlags::RST != 0 + } + + /// Returns if the layer is a TCP synchronization. + pub fn is_syn(&self) -> bool { + self.layer.flags & TcpFlags::SYN != 0 + } + + /// Returns if the layer is a TCP finish. + pub fn is_fin(&self) -> bool { + self.layer.flags & TcpFlags::FIN != 0 + } + + /// Returns if the layer is a TCP reset or finish. + pub fn is_rst_or_fin(&self) -> bool { + self.is_rst() || self.is_fin() + } + + /// Returns if the layer has zero window. + pub fn is_zero_window(&self) -> bool { + self.layer.window == 0 + } + + /// Returns if the layer indicates selective acknowledgements permitted. This function + /// allocates space for serializing options. + pub fn is_sack_perm(&self) -> bool { + for option in &self.layer.options { + #[allow(clippy::single_match)] + match get_number_from_option(option) { + TcpOptionNumbers::SACK_PERMITTED => return true, + _ => {} + } + } + + false + } +} + +impl Display for Tcp { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + write!( + f, + "{}: {} -> {} {}", + LayerKinds::Tcp, + self.layer.source, + self.layer.destination, + self.flag_string() + ) + } +} + +impl Layer for Tcp { + fn kind(&self) -> LayerKind { + LayerKinds::Tcp + } + + fn len(&self) -> usize { + let mut tcp_size = TcpPacket::packet_size(&self.layer); + let mut tcp_options_size = 0; + for option in &self.layer.options { + tcp_size -= 1; + tcp_options_size += TcpOptionPacket::packet_size(option); + } + + tcp_size + tcp_options_size + } + + fn serialize(&self, buffer: &mut [u8], _: usize) -> io::Result { + let mut packet = MutableTcpPacket::new(buffer) + .ok_or_else(|| io::Error::new(io::ErrorKind::WriteZero, "buffer too small"))?; + + packet.populate(&self.layer); + + // Fix length + let header_length = self.len(); + if header_length / 4 > u8::MAX as usize { + return Err(io::Error::new(io::ErrorKind::Other, "TCP too big")); + } + packet.set_data_offset((header_length / 4) as u8); + + // Compute checksum + let checksum = tcp::ipv4_checksum( + &packet.to_immutable(), + &self.src_ip_addr(), + &self.dst_ip_addr(), + ); + packet.set_checksum(checksum); + + Ok(header_length) + } + + fn serialize_with_payload( + &self, + buffer: &mut [u8], + payload: &[u8], + n: usize, + ) -> io::Result { + let mut packet = MutableTcpPacket::new(buffer) + .ok_or_else(|| io::Error::new(io::ErrorKind::WriteZero, "buffer too small"))?; + + packet.populate(&self.layer); + + // Copy payload + packet.set_payload(payload); + + // Fix length + let header_length = self.len(); + if header_length / 4 > u8::MAX as usize { + return Err(io::Error::new(io::ErrorKind::Other, "TCP too big")); + } + packet.set_data_offset((header_length / 4) as u8); + + // Compute checksum + let checksum = tcp::ipv4_checksum( + &packet.to_immutable(), + &self.src_ip_addr(), + &self.dst_ip_addr(), + ); + packet.set_checksum(checksum); + + Ok(header_length + n) + } +} + +fn bytes_to_u16(bytes: &[u8]) -> u16 { + let mut result = 0; + + for byte in bytes.iter().take(2) { + result = result * 256 + *byte as u16; + } + result +} + +fn bytes_to_u32(bytes: &[u8]) -> u32 { + let mut result = 0; + + for byte in bytes.iter().take(4) { + result = result * 256 + *byte as u32; + } + result +} + +fn get_number_from_option(option: &TcpOption) -> TcpOptionNumber { + let buffer = vec![0u8; 40]; + let mut packet = MutableTcpOptionPacket::owned(buffer).unwrap(); + packet.populate(option); + packet.get_number() + + /* An unsafe but faster solution (not completed) + let r = option as *const TcpOption; + unsafe { + let tr: *const TcpOptionNumber = mem::transmute(r); + + return *tr; + } + */ +} diff --git a/Other/pcap2socks/crate/src/packet/layer/udp.rs b/Other/pcap2socks/crate/src/packet/layer/udp.rs new file mode 100644 index 0000000..69f45f9 --- /dev/null +++ b/Other/pcap2socks/crate/src/packet/layer/udp.rs @@ -0,0 +1,174 @@ +//! Support for serializing and deserializing the UDP layer. + +use super::ipv4::Ipv4; +use super::{Layer, LayerKind, LayerKinds}; +use pnet::packet::udp::{self, MutableUdpPacket, UdpPacket}; +use std::clone::Clone; +use std::fmt::{self, Display, Formatter}; +use std::io; +use std::net::Ipv4Addr; + +/// Represents an UDP packet. +#[derive(Clone, Debug)] +pub struct Udp { + layer: udp::Udp, + src: Ipv4Addr, + dst: Ipv4Addr, +} + +impl Udp { + /// Creates an `Udp`. + pub fn new(src: u16, dst: u16) -> Udp { + let d_udp = udp::Udp { + source: src, + destination: dst, + length: 0, + checksum: 0, + payload: vec![], + }; + Udp::from(d_udp) + } + + /// Creates an `Udp` according to the given `Udp`. + pub fn from(udp: udp::Udp) -> Udp { + Udp { + layer: udp, + src: Ipv4Addr::UNSPECIFIED, + dst: Ipv4Addr::UNSPECIFIED, + } + } + + /// Creates an `Udp` according to the given UDP packet and the `Ipv4` + pub fn parse(packet: &UdpPacket, ipv4: &Ipv4) -> Udp { + let d_udp = udp::Udp { + source: packet.get_source(), + destination: packet.get_destination(), + length: packet.get_length(), + checksum: packet.get_checksum(), + payload: vec![], + }; + let mut udp = Udp::from(d_udp); + udp.set_ipv4_layer(ipv4); + + udp + } + + /// Returns the minimum of the layer when converted into a byte-array. + pub fn minimum_len() -> usize { + 8 + } + + /// Sets the source and destination IP address for the layer with the given `Ipv4`. + pub fn set_ipv4_layer(&mut self, ipv4: &Ipv4) { + self.src = ipv4.src(); + self.dst = ipv4.dst(); + } + + /// Returns the source IP address of the layer. + pub fn src_ip_addr(&self) -> Ipv4Addr { + self.src + } + + /// Returns the destination IP address of the layer. + pub fn dst_ip_addr(&self) -> Ipv4Addr { + self.dst + } + + /// Returns the source of the layer. + pub fn src(&self) -> u16 { + self.layer.source + } + + /// Returns the destination of the layer. + pub fn dst(&self) -> u16 { + self.layer.destination + } + + /// Returns the length of the layer. + pub fn length(&self) -> u16 { + self.layer.length + } +} + +impl Display for Udp { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + write!( + f, + "{}: {} -> {}, Length = {}", + LayerKinds::Udp, + self.layer.source, + self.layer.destination, + self.layer.length + ) + } +} + +impl Layer for Udp { + fn kind(&self) -> LayerKind { + LayerKinds::Udp + } + + fn len(&self) -> usize { + UdpPacket::packet_size(&self.layer) + } + + fn serialize(&self, buffer: &mut [u8], n: usize) -> io::Result { + let mut packet = MutableUdpPacket::new(buffer) + .ok_or_else(|| io::Error::new(io::ErrorKind::WriteZero, "buffer too small"))?; + + packet.populate(&self.layer); + + // Fix length + if n > u16::MAX as usize { + return Err(io::Error::new( + io::ErrorKind::InvalidInput, + "length too big", + )); + } + packet.set_length(n as u16); + + // Compute checksum + let checksum = udp::ipv4_checksum( + &packet.to_immutable(), + &self.src_ip_addr(), + &self.dst_ip_addr(), + ); + packet.set_checksum(checksum); + + Ok(self.len()) + } + + fn serialize_with_payload( + &self, + buffer: &mut [u8], + payload: &[u8], + n: usize, + ) -> io::Result { + let mut packet = MutableUdpPacket::new(buffer) + .ok_or_else(|| io::Error::new(io::ErrorKind::WriteZero, "buffer too small"))?; + + packet.populate(&self.layer); + + // Copy payload + packet.set_payload(payload); + + // Fix length + if n > u16::MAX as usize { + return Err(io::Error::new( + io::ErrorKind::InvalidInput, + "length too big", + )); + } + packet.set_length(n as u16); + + // Compute checksum + let checksum = udp::ipv4_checksum( + &packet.to_immutable(), + &self.src_ip_addr(), + &self.dst_ip_addr(), + ); + packet.set_checksum(checksum); + + Ok(self.len() + n) + } +} diff --git a/Other/pcap2socks/crate/src/packet/mod.rs b/Other/pcap2socks/crate/src/packet/mod.rs new file mode 100644 index 0000000..e26faa9 --- /dev/null +++ b/Other/pcap2socks/crate/src/packet/mod.rs @@ -0,0 +1,552 @@ +//! Support for serializing and deserializing packets. + +use pnet::packet::arp::ArpPacket; +use pnet::packet::ethernet::{EtherTypes, EthernetPacket}; +use pnet::packet::icmp::IcmpPacket; +use pnet::packet::ip::IpNextHeaderProtocols; +use pnet::packet::ipv4::Ipv4Packet; +use pnet::packet::tcp::TcpPacket; +use pnet::packet::udp::UdpPacket; +use pnet::packet::Packet; +use std::collections::HashMap; +use std::fmt::{self, Display, Formatter}; +use std::io; +use std::net::Ipv4Addr; +use std::time::Instant; + +pub mod layer; +use layer::arp::Arp; +use layer::ethernet::Ethernet; +use layer::icmpv4::Icmpv4; +use layer::ipv4::Ipv4; +use layer::tcp::Tcp; +use layer::udp::Udp; +use layer::{Layer, LayerKind, Layers}; + +/// Represents a packet indicator. +#[derive(Clone, Debug)] +pub struct Indicator { + link: Layers, + network: Option, + transport: Option, +} + +impl Indicator { + /// Creates a `Indicator`. + pub fn new(link: Layers, network: Option, transport: Option) -> Indicator { + Indicator { + link, + network, + transport, + } + } + + /// Creates a `Indicator` by the given Ethernet packet. + pub fn parse(packet: &EthernetPacket) -> Indicator { + let mut transport = None; + + let link = Layers::Ethernet(Ethernet::parse(packet)); + let network = match packet.get_ethertype() { + EtherTypes::Arp => ArpPacket::new(packet.payload()).map(|arp_packet| Layers::Arp(Arp::parse(&arp_packet))), + EtherTypes::Ipv4 => match Ipv4Packet::new(packet.payload()) { + Some(ref ipv4_packet) => { + let ipv4 = Ipv4::parse(ipv4_packet); + // Fragment + if !ipv4.is_fragment() { + transport = match ipv4_packet.get_next_level_protocol() { + IpNextHeaderProtocols::Icmp => { + IcmpPacket::new(ipv4_packet.payload()) + .map(|icmp_packet| Layers::Icmpv4(Icmpv4::parse(&icmp_packet))) + } + IpNextHeaderProtocols::Tcp => { + TcpPacket::new(ipv4_packet.payload()) + .map(|tcp_packet| Layers::Tcp(Tcp::parse(&tcp_packet, &ipv4))) + } + IpNextHeaderProtocols::Udp => { + UdpPacket::new(ipv4_packet.payload()) + .map(|udp_packet| Layers::Udp(Udp::parse(&udp_packet, &ipv4))) + } + _ => None, + }; + } + + Some(Layers::Ipv4(ipv4)) + } + None => None, + }, + _ => None, + }; + + Indicator { + link, + network, + transport, + } + } + + /// Creates a `Indicator` by the given frame. + pub fn from(frame: &[u8]) -> Option { + EthernetPacket::new(frame).map(|packet| Indicator::parse(&packet)) + } + + /// Returns the brief of the indicator. + pub fn brief(&self) -> String { + match self.network() { + Some(network) => match network { + Layers::Arp(arp) => format!("{}", arp), + Layers::Ipv4(ipv4) => match self.transport() { + Some(transport) => match transport { + Layers::Icmpv4(icmpv4) => format!( + "{}: {} -> {}, {}", + icmpv4.kind(), + ipv4.src(), + ipv4.dst(), + icmpv4.description() + ), + Layers::Tcp(tcp) => format!( + "{}: {}:{} -> {}:{} {}", + tcp.kind(), + tcp.src_ip_addr(), + tcp.src(), + tcp.dst_ip_addr(), + tcp.dst(), + tcp.flag_string(), + ), + Layers::Udp(udp) => format!( + "{}: {}:{} -> {}:{}, Length = {}", + udp.kind(), + udp.src_ip_addr(), + udp.src(), + udp.dst_ip_addr(), + udp.dst(), + udp.length(), + ), + _ => unreachable!(), + }, + None => format!("{}", ipv4), + }, + _ => unreachable!(), + }, + None => match self.link() { + Layers::Ethernet(ethernet) => format!("{}", ethernet), + _ => unreachable!(), + }, + } + } + + /// Returns The length of the indicator when converted into a byte-array. + #[allow(clippy::len_without_is_empty)] + pub fn len(&self) -> usize { + let mut size = 0; + + // Link + size += self.link().len(); + // Network + if let Some(network) = self.network() { + size += network.len(); + } + // Transport + if let Some(transport) = self.transport() { + size += transport.len(); + } + + size + } + + /// Returns the content length of the indicator when converted into a byte-array. + pub fn content_len(&self) -> usize { + match self.link() { + Layers::Ethernet(ethernet) => match self.network() { + Some(network) => match network { + Layers::Arp(arp) => ethernet.len() + arp.len(), + Layers::Ipv4(ipv4) => ethernet.len() + ipv4.total_length() as usize, + _ => unreachable!(), + }, + None => ethernet.len(), + }, + _ => unreachable!(), + } + } + + /// Serialize the indicator into a byte-array. + pub fn serialize(&self, buffer: &mut [u8]) -> io::Result { + let mut begin = 0; + let mut total = self.len(); + + // Link + let m = self.link().serialize(&mut buffer[begin..], total)?; + begin += m; + total -= m; + // Network + if let Some(network) = self.network() { + let m = network.serialize(&mut buffer[begin..], total)?; + begin += m; + total -= m; + }; + // Transport + if let Some(transport) = self.transport() { + let m = transport.serialize(&mut buffer[begin..], total)?; + begin += m; + }; + + Ok(begin) + } + + /// Serialize the indicator into a byte-array with payload. + pub fn serialize_with_payload(&self, buffer: &mut [u8], payload: &[u8]) -> io::Result { + let mut begin = 0; + let mut total = self.len() + payload.len(); + + // Link + let m = self + .link() + .serialize_with_payload(&mut buffer[begin..], payload, total)?; + begin += m; + total -= m; + // Network + if let Some(network) = self.network() { + let m = network.serialize_with_payload(&mut buffer[begin..], payload, total)?; + begin += m; + total -= m; + }; + // Transport + if let Some(transport) = self.transport() { + let m = transport.serialize_with_payload(&mut buffer[begin..], payload, total)?; + begin += m; + }; + + Ok(begin) + } + + /// Returns the link layer. + pub fn link(&self) -> &Layers { + &self.link + } + + /// Returns the link layer kind. + pub fn link_kind(&self) -> LayerKind { + self.link().kind() + } + + /// Returns the Ethernet layer. + pub fn ethernet(&self) -> Option<&Ethernet> { + if let Layers::Ethernet(layer) = &self.link() { + return Some(layer); + } + + None + } + + /// Returns the network layer. + pub fn network(&self) -> Option<&Layers> { + if let Some(layer) = &self.network { + return Some(layer); + } + + None + } + + /// Returns the network layer kind. + pub fn network_kind(&self) -> Option { + if let Some(layer) = self.network() { + return Some(layer.kind()); + } + + None + } + + /// Returns the ARP layer. + pub fn arp(&self) -> Option<&Arp> { + #[allow(clippy::collapsible_match)] + if let Some(layer) = self.network() { + if let Layers::Arp(layer) = layer { + return Some(layer); + } + } + + None + } + + /// Returns the IPv4 layer. + pub fn ipv4(&self) -> Option<&Ipv4> { + #[allow(clippy::collapsible_match)] + if let Some(layer) = self.network() { + if let Layers::Ipv4(layer) = layer { + return Some(layer); + } + } + + None + } + + /// Returns the transport layer. + pub fn transport(&self) -> Option<&Layers> { + if let Some(layer) = &self.transport { + return Some(layer); + } + + None + } + + /// Returns the transport layer kind. + pub fn transport_kind(&self) -> Option { + if let Some(layer) = self.transport() { + return Some(layer.kind()); + } + + None + } + + /// Returns the ICMPv4 layer. + pub fn icmpv4(&self) -> Option<&Icmpv4> { + #[allow(clippy::collapsible_match)] + if let Some(layer) = self.transport() { + if let Layers::Icmpv4(layer) = layer { + return Some(layer); + } + } + + None + } + + /// Returns the TCP layer. + pub fn tcp(&self) -> Option<&Tcp> { + #[allow(clippy::collapsible_match)] + if let Some(layer) = self.transport() { + if let Layers::Tcp(layer) = layer { + return Some(layer); + } + } + + None + } + + /// Returns the UDP layer. + pub fn udp(&self) -> Option<&Udp> { + #[allow(clippy::collapsible_match)] + if let Some(layer) = self.transport() { + if let Layers::Udp(layer) = layer { + return Some(layer); + } + } + + None + } +} + +impl Display for Indicator { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + let link_string = format!("\n- {} ({} Bytes)", self.link, self.link.len()); + let mut network_string = String::new(); + if let Some(network) = &self.network { + network_string = format!("\n- {} ({} Bytes)", network, network.len()); + } + let mut transport_string = String::new(); + if let Some(transport) = &self.transport { + transport_string = format!("\n- {} ({} Bytes)", transport, transport.len()); + } + + write!( + f, + "Indicator{}{}{}", + link_string, network_string, transport_string + ) + } +} + +/// Represents the expire time of each group of fragments. +const EXPIRE_TIME: u128 = 10000; + +/// Represents a fragmentation. +#[allow(dead_code)] +#[derive(Debug)] +pub struct Fragmentation { + ethernet: Ethernet, + ipv4: Ipv4, + buffer: Vec, + length: usize, + total_length: Option, + last_seen: Instant, +} + +impl Fragmentation { + /// Creates a `Fragmentation`. + pub fn new(indicator: &Indicator) -> Option { + let ethernet = match indicator.ethernet() { + Some(ethernet) => ethernet, + None => return None, + }; + let ipv4 = match indicator.ipv4() { + Some(ipv4) => ipv4, + None => return None, + }; + + let frag = Fragmentation { + ethernet: ethernet.clone(), + ipv4: ipv4.clone(), + buffer: vec![0; u16::MAX as usize], + length: 0, + total_length: None, + last_seen: Instant::now(), + }; + + Some(frag) + } + + /// Adds a fragmentation. + pub fn add(&mut self, indicator: &Indicator, payload: &[u8]) { + // Payload + let ipv4 = match indicator.ipv4() { + Some(ipv4) => ipv4, + None => return, + }; + let offset = (ipv4.fragment_offset() as usize) * 8; + if !ipv4.is_more_fragment() { + self.total_length = Some(offset + payload.len()); + } + + self.buffer[offset..offset + payload.len()].copy_from_slice(payload); + self.length += payload.len(); + } + + /// Concatenates fragmentations and returns the transport layer and the payload. + pub fn concatenate(&self) -> (Option, &[u8]) { + let transport = match self.ipv4.next_level_protocol() { + IpNextHeaderProtocols::Icmp => { + IcmpPacket::new(&self.buffer[..self.length]) + .map(|icmp_packet| Layers::Icmpv4(Icmpv4::parse(&icmp_packet))) + }, + IpNextHeaderProtocols::Tcp => { + TcpPacket::new(&self.buffer[..self.length]) + .map(|tcp_packet| Layers::Tcp(Tcp::parse(&tcp_packet, &self.ipv4))) + }, + IpNextHeaderProtocols::Udp => { + UdpPacket::new(&self.buffer[..self.length]) + .map(|udp_packet| Layers::Udp(Udp::parse(&udp_packet, &self.ipv4))) + }, + _ => None, + }; + + let header_size = match &transport { + Some(transport) => transport.len(), + None => 0, + }; + (transport, &self.buffer[header_size..self.length]) + } + + /// Returns if the fragmentation is completed. + pub fn is_completed(&self) -> bool { + match self.total_length { + Some(total_length) => self.length == total_length, + None => false, + } + } + + /// Returns if the fragmentation is expired. + pub fn is_expired(&self) -> bool { + self.last_seen.elapsed().as_millis() > EXPIRE_TIME + } +} + +/// Represents a defragmentation machine. +#[derive(Debug, Default)] +pub struct Defraggler { + frags: HashMap<(Ipv4Addr, Ipv4Addr, LayerKind, u16), Fragmentation>, +} + +impl Defraggler { + /// Creates a new empty `Defraggler`. + pub fn new() -> Defraggler { + Defraggler { + frags: HashMap::new(), + } + } + + /// Adds a fragmentation and returns the fragmentation if it is completed. + pub fn add(&mut self, indicator: &Indicator, frame: &[u8]) -> Option { + let ipv4 = match indicator.ipv4() { + Some(ipv4) => ipv4, + None => return None, + }; + + let key = (ipv4.src(), ipv4.dst(), ipv4.kind(), ipv4.identification()); + + let is_create = match self.frags.get(&key) { + Some(frag) => frag.is_expired(), + None => true, + }; + if is_create { + let frag = match Fragmentation::new(indicator) { + Some(frag) => frag, + None => return None, + }; + + self.frags.insert(key, frag); + } + + // Add fragmentation + let frag = self.frags.get_mut(&key).unwrap(); + let header_size = indicator.ethernet().unwrap().len() + ipv4.len(); + frag.add(indicator, &frame[header_size..]); + if frag.is_completed() { + self.frags.remove(&key) + } else { + None + } + } +} + +#[test] +fn defraggler_add() { + use layer::LayerKinds; + + let mut d = Defraggler::new(); + let ethernet = Ethernet::new( + LayerKinds::Ipv4, + "11:11:11:11:11:11".parse().unwrap(), + "22:22:22:22:22:22".parse().unwrap(), + ) + .unwrap(); + let mut b = vec![0u8; ethernet.len() + Ipv4::minimum_len() + Udp::minimum_len() + 8]; + + let ipv4 = Ipv4::new_more_fragment( + 0, + LayerKinds::Udp, + 0, + "1.1.1.1".parse().unwrap(), + "2.2.2.2".parse().unwrap(), + ) + .unwrap(); + let udp = Udp::new(1, 2); + let i = Indicator::new( + Layers::Ethernet(ethernet.clone()), + Some(Layers::Ipv4(ipv4)), + Some(Layers::Udp(udp)), + ); + let v = (0..8).into_iter().collect::>(); + i.serialize_with_payload(b.as_mut_slice(), v.as_slice()) + .unwrap(); + + let i = Indicator::from(b.as_slice()).unwrap(); + let r = d.add(&i, &b[..i.content_len()]); + assert!(r.is_none()); + + let ipv4 = Ipv4::new_last_fragment( + 0, + LayerKinds::Udp, + 2, + "1.1.1.1".parse().unwrap(), + "2.2.2.2".parse().unwrap(), + ) + .unwrap(); + let i = Indicator::new(Layers::Ethernet(ethernet), Some(Layers::Ipv4(ipv4)), None); + let v = (8..16).into_iter().collect::>(); + i.serialize_with_payload(b.as_mut_slice(), v.as_slice()) + .unwrap(); + + let i = Indicator::from(b.as_slice()).unwrap(); + let f = d.add(&i, &b[..i.content_len()]).unwrap(); + let (_, p) = f.concatenate(); + + assert_eq!(p, &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]); +} diff --git a/Other/pcap2socks/crate/src/pcap/mod.rs b/Other/pcap2socks/crate/src/pcap/mod.rs new file mode 100644 index 0000000..3c96f46 --- /dev/null +++ b/Other/pcap2socks/crate/src/pcap/mod.rs @@ -0,0 +1,257 @@ +//! Support for handling pcap interfaces. + +use pnet::datalink::{self, Channel, Config, DataLinkReceiver, DataLinkSender, MacAddr}; +use std::clone::Clone; +use std::fmt::{self, Display, Formatter}; +use std::io; +use std::net::Ipv4Addr; + +#[cfg(windows)] +use netifs; + +#[cfg(not(windows))] +use interfaces as c_interfaces; + +/// Represents the hardware address MAC in an Ethernet network. +pub type HardwareAddr = MacAddr; + +/// Represents the unspecified hardware address `00:00:00:00:00:00` in an Ethernet network. +pub const HARDWARE_ADDR_UNSPECIFIED: HardwareAddr = MacAddr(0, 0, 0, 0, 0, 0); +/// Represents the broadcast hardware address `FF:FF:FF:FF:FF:FF` in an Ethernet network. +pub const HARDWARE_ADDR_BROADCAST: HardwareAddr = MacAddr(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF); + +/// Represents the send half of a pcap device. +pub type Sender = Box; +/// Represents the receive half of a pcap device. +pub type Receiver = Box; + +/// Represents the buffer size of pcap channels. +const BUFFER_SIZE: usize = 256 * 1024; + +/// Represents a network interface and its associated addresses. +#[derive(Clone, Debug, Default, Eq, Hash, PartialEq)] +pub struct Interface { + name: String, + alias: Option, + hardware_addr: MacAddr, + ip_addrs: Vec, + mtu: usize, + is_up: bool, + is_loopback: bool, +} + +impl Interface { + /// Constructs a new empty `Interface`. + pub fn new() -> Interface { + Interface { + name: String::new(), + alias: None, + hardware_addr: MacAddr::zero(), + ip_addrs: vec![], + mtu: 0, + is_up: false, + is_loopback: false, + } + } + + /// Opens the network interface for sending and receiving data. + pub fn open(&self) -> io::Result<(Sender, Receiver)> { + let inters = datalink::interfaces(); + let inter = inters + .into_iter() + .find(|current_inter| current_inter.name == self.name) + .ok_or_else(|| io::Error::new( + io::ErrorKind::NotFound, + "interface not found", + ))?; + + let config = Config { + write_buffer_size: BUFFER_SIZE, + read_buffer_size: BUFFER_SIZE, + ..Config::default() + }; + let channel = datalink::channel(&inter, config)?; + let channel = match channel { + Channel::Ethernet(tx, rx) => (tx, rx), + _ => return Err(io::Error::new(io::ErrorKind::Other, "unknown link type")), + }; + + Ok(channel) + } + + /// Returns the name of the interface. + pub fn name(&self) -> &String { + &self.name + } + + /// Returns the alias of the interface. + pub fn alias(&self) -> &Option { + &self.alias + } + + /// Returns the hardware address of the interface. + pub fn hardware_addr(&self) -> MacAddr { + self.hardware_addr + } + + /// Returns the first IPv4 address of the interface. + pub fn ip_addr(&self) -> Option { + if !self.ip_addrs.is_empty() { + Some(self.ip_addrs[0]) + } else { + None + } + } + + /// Returns the MTU of the interface. + pub fn mtu(&self) -> usize { + self.mtu + } + + /// Returns if the interface is up. + pub fn is_up(&self) -> bool { + self.is_up + } + + /// Returns if the interface is a loopback interface. + pub fn is_loopback(&self) -> bool { + self.is_loopback + } +} + +impl Display for Interface { + fn fmt(&self, f: &mut Formatter) -> fmt::Result { + let name = match &self.alias { + Some(alias) => format!("{} ({})", self.name, alias), + None => self.name.clone(), + }; + + let ip_addrs = self.ip_addrs + .iter() + .map(|ip_addr| { ip_addr.to_string() }) + .collect::>() + .join(", "); + + + let mut flags = String::new(); + if self.is_loopback { + flags = String::from(" (Loopback)"); + } + + write!( + f, + "{} [{}]{}: {}", + name, self.hardware_addr, flags, ip_addrs + ) + } +} + +/// Gets a list of available network interfaces for the current machine. +pub fn interfaces() -> Vec { + let inters = datalink::interfaces(); + + let ifs = inters + .iter() + .map(|inter| { + /* Cannot get flags using WinPcap in Windows + if !inter.is_up() { + return Err(()); + } + */ + + let mut i = Interface::new(); + i.name = inter.name.clone(); + i.hardware_addr = match inter.mac { + Some(mac) => mac, + None => return Err(()), + }; + i.ip_addrs = inter + .ips + .iter() + .map(|ip| match ip { + ipnetwork::IpNetwork::V4(ref ipv4) => Ok(ipv4.ip()), + _ => Err(()), + }) + .filter_map(Result::ok) + .collect(); + + // Exclude interface without any IPv4 address + if i.ip_addrs.is_empty() { + return Err(()); + } + + i.is_up = inter.is_up(); + i.is_loopback = inter.is_loopback(); + + Ok(i) + }) + .filter_map(Result::ok) + .collect::>(); + + mark_interfaces(ifs) +} + +#[cfg(windows)] +fn mark_interfaces(mut ifs: Vec) -> Vec { + if let Ok(sys_inters) = netifs::get_interfaces() { + for inter in sys_inters { + for i in &mut ifs { + if i.name.ends_with(&inter.name) { + i.alias = Some(inter.display_name.clone()); + i.mtu = inter.mtu; + i.is_up = inter.is_up; + i.is_loopback = inter.is_loopback; + } + } + } + } + + ifs +} + +#[cfg(not(windows))] +fn mark_interfaces(mut ifs: Vec) -> Vec { + if let Ok(sys_inters) = c_interfaces::Interface::get_all() { + for inter in sys_inters { + for i in &mut ifs { + if i.name == inter.name { + if let Ok(mtu) = inter.get_mtu() { + i.mtu = mtu as usize; + } + } + } + } + } + + ifs +} + +/// Represents a virtual send half which will discard all incoming traffic. +#[derive(Debug, Default)] +pub struct BlackHole {} + +impl BlackHole { + /// Constructs a new `BlackHole`. + pub fn new() -> BlackHole { + BlackHole {} + } +} + +impl DataLinkSender for BlackHole { + fn build_and_send( + &mut self, + _: usize, + _: usize, + _: &mut dyn FnMut(&mut [u8]), + ) -> Option> { + Some(Ok(())) + } + + fn send_to( + &mut self, + _: &[u8], + _: Option, + ) -> Option> { + Some(Ok(())) + } +} diff --git a/Other/pcap2socks/crate/src/proxy/mod.rs b/Other/pcap2socks/crate/src/proxy/mod.rs new file mode 100644 index 0000000..a6b9ad8 --- /dev/null +++ b/Other/pcap2socks/crate/src/proxy/mod.rs @@ -0,0 +1,891 @@ +//! Support for handling proxies. + +use log::{debug, trace, warn}; +use std::net::{Ipv4Addr, Shutdown, SocketAddrV4}; +use std::sync::atomic::{AtomicBool, AtomicU64, Ordering}; +use std::sync::{Arc, Mutex}; +use std::time::Duration; +use tokio::io::{AsyncReadExt, AsyncWriteExt}; +use tokio::net::tcp::OwnedWriteHalf; +use tokio::sync::mpsc::{self, Sender, UnboundedReceiver, UnboundedSender}; +use tokio::{self, io, time}; + +mod socks; +use socks::SocksSendHalf; +use socks::{SocksAuth, SocksOption}; + +/// Represents the configuration of the proxy. +pub enum ProxyConfig { + /// Represents the SOCKS proxy configuration. + Socks(SocketAddrV4, SocksOption), +} + +impl ProxyConfig { + /// Creates a new SOCKS `ProxyConfig`. + pub fn new_socks( + remote: SocketAddrV4, + force_associate_remote: bool, + force_associate_bind_addr: bool, + auth: Option<(String, String)>, + ) -> ProxyConfig { + ProxyConfig::Socks( + remote, + SocksOption::new( + force_associate_remote, + force_associate_bind_addr, + auth.map(|(username, password)| SocksAuth::new(username, password)), + ), + ) + } +} + +/// Trait for forwarding a stream. +pub trait ForwardStream: Send { + /// Opens a stream connection. + fn open(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()>; + + /// Forwards stream. + fn forward(&mut self, dst: SocketAddrV4, src: SocketAddrV4, payload: &[u8]) -> io::Result<()>; + + /// Triggers a timed event. Used in retransmitting timed out data. + fn tick(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()>; + + /// Closes a stream connection. + fn close(&mut self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result<()>; + + /// Checks the stream. + fn check(&self, dst: SocketAddrV4, src: SocketAddrV4) -> io::Result; +} + +/// Represents the wait time after a `TimedOut` `IoError`. +const TIMEDOUT_WAIT: u64 = 20; +/// Represents the wait time after a queue full event. +const QUEUE_FULL_WAIT: u64 = 200; + +/// Represents the wait time after receiving 0 byte from the stream. +const RECV_ZERO_WAIT: u64 = 100; +/// Represents the maximum count of receiving 0 byte from the stream before closing it. +const MAX_RECV_ZERO: usize = 3; + +/// Represents the interval of a tick. +const TICK_INTERVAL: u64 = 500; + +/// Represents a worker of a proxied TCP stream. +pub struct StreamWorker { + dst: SocketAddrV4, + tx_tx: UnboundedSender>, + is_tx_closed: Arc, + is_rx_closed: Arc, + tx_close_tx: Sender<()>, + rx_close_tx: Sender<()>, +} + +impl StreamWorker { + /// Opens a new `StreamWorker`. + pub async fn connect( + tx: Arc>, + src: SocketAddrV4, + dst: SocketAddrV4, + proxy: &ProxyConfig, + ) -> io::Result { + let tx_cloned = Arc::clone(&tx); + + let stream = match proxy { + ProxyConfig::Socks(remote, options) => { + socks::connect(*remote, dst, options).await? + } + }; + let stream = stream.into_inner(); + let (mut stream_rx, mut stream_tx) = stream.into_split(); + + // Open + tx.lock().unwrap().open(dst, src)?; + + let (tx_tx, mut tx_rx): (UnboundedSender>, UnboundedReceiver>) = + mpsc::unbounded_channel(); + let is_tx_closed = Arc::new(AtomicBool::new(false)); + let is_tx_closed_cloned = Arc::clone(&is_tx_closed); + let is_rx_closed = Arc::new(AtomicBool::new(false)); + let is_rx_closed_cloned = Arc::clone(&is_rx_closed); + let (tx_close_tx, mut tx_close_rx) = mpsc::channel(1); + let (rx_close_tx, mut rx_close_rx) = mpsc::channel(1); + + // Send + tokio::spawn(async move { + loop { + let is_close; + + // Select + { + let tx_rx_fut = tx_rx.recv(); + let tx_close_rx_fut = tx_close_rx.recv(); + + tokio::pin!(tx_rx_fut, tx_close_rx_fut); + + tokio::select! { + r = tx_rx_fut => match r { + Some(payload) => { + match stream_tx.write_all(payload.as_slice()).await { + Ok(_) => { + debug!( + "send to proxy: {}: {} -> {} ({} Bytes)", + "TCP", 0, dst, payload.len() + ); + + is_close = false + }, + Err(ref e) => { + warn!("handle send: {}: {} -> {}: {}", "TCP", 0, dst, e); + + is_close = true + } + }; + } + None => is_close = true + }, + _ = tx_close_rx_fut => is_close = true + } + } + + if is_close { + // Close + is_tx_closed_cloned.store(true, Ordering::Relaxed); + trace!("close stream TX {} -> {}", 0, dst); + break; + } + } + }); + + // Receive + tokio::spawn(async move { + let mut buffer = vec![0u8; u16::MAX as usize]; + let mut recv_zero: usize = 0; + loop { + let size; + + // Select + { + let stream_rx_fut = stream_rx.read(&mut buffer); + let rx_close_rx_fut = rx_close_rx.recv(); + + tokio::pin!(stream_rx_fut, rx_close_rx_fut); + + tokio::select! { + r = stream_rx_fut => match r { + Ok(this_size) => if this_size > 0 { + debug!( + "receive from proxy: {}: {} -> {} ({} Bytes)", + "TCP", dst, 0, this_size + ); + + size = this_size; + } else { + recv_zero = recv_zero.checked_add(1).unwrap_or(usize::MAX); + if recv_zero > MAX_RECV_ZERO { + size = 0; + } else { + time::sleep(Duration::from_millis(RECV_ZERO_WAIT)).await; + continue; + } + }, + Err(ref e) => { + if e.kind() == io::ErrorKind::TimedOut { + time::sleep(Duration::from_millis(TIMEDOUT_WAIT)).await; + continue; + } + + warn!("receive from proxy: {}: {} -> {}: {}", "TCP", dst, 0, e); + + size = 0; + } + }, + _ = rx_close_rx_fut => size = 0 + } + } + + if size > 0 { + // Loop until the data was transferred to the forwarder + let mut is_sent = false; + loop { + { + let mut tx_locked = tx.lock().unwrap(); + match tx_locked.check(dst, src) { + Ok(remaining) => { + // If the queue remains size + if remaining >= size { + if let Err(ref e) = + tx_locked.forward(dst, src, &buffer[..size]) + { + warn!( + "handle receive: {}: {} -> {}: {}", + "TCP", dst, 0, e + ); + } + is_sent = true; + } + } + Err(ref e) => { + is_sent = true; + warn!("handle receive: {}: {} -> {}: {}", "TCP", dst, 0, e) + } + } + } + + if is_sent { + break; + } else { + // Pause if the queue is full + time::sleep(Duration::from_millis(QUEUE_FULL_WAIT)).await; + } + } + } else { + // Close + is_rx_closed_cloned.store(true, Ordering::Relaxed); + trace!("close stream RX {} -> {}", dst, 0); + + if let Err(ref e) = tx.lock().unwrap().close(dst, src) { + warn!("handle close: {}: {} -> {}: {}", "TCP", dst, 0, e); + } + + break; + } + } + }); + + // Timeout + tokio::spawn(async move { + loop { + time::sleep(Duration::from_millis(TICK_INTERVAL)).await; + // Send + if let Err(ref e) = tx_cloned.lock().unwrap().tick(dst, src) { + if e.kind() == io::ErrorKind::NotFound { + return; + } + warn!("handle timeout: {}: {} -> {}: {}", "TCP", dst, 0, e); + } + } + }); + + trace!("open stream {} -> {}", 0, dst); + + Ok(StreamWorker { + dst, + tx_tx, + is_tx_closed, + is_rx_closed, + tx_close_tx, + rx_close_tx, + }) + } + + /// Sends data on the proxied stream in TCP to the destination. + pub fn send(&mut self, payload: Vec) -> io::Result<()> { + // Send + if self.tx_tx.send(payload).is_err() { + return Err(io::Error::from(io::ErrorKind::NotConnected)); + } + + Ok(()) + } + + /// Shuts down the read, write, or both halves of the worker. + pub fn shutdown(&mut self, how: Shutdown) { + match how { + Shutdown::Write => { + if !self.is_tx_closed.load(Ordering::Relaxed) { + let _ = self.tx_close_tx.try_send(()); + } + } + Shutdown::Read => { + if !self.is_rx_closed.load(Ordering::Relaxed) { + let _ = self.rx_close_tx.try_send(()); + } + } + Shutdown::Both => { + self.shutdown(Shutdown::Write); + self.shutdown(Shutdown::Read); + } + } + } + + /// Closes the worker. + pub fn close(&mut self) { + self.shutdown(Shutdown::Both); + } + + /// Returns if the worker is closed for writing. + pub fn is_tx_closed(&self) -> bool { + self.is_tx_closed.load(Ordering::Relaxed) + } + + /// Returns if the worker is closed for reading. + pub fn is_rx_closed(&self) -> bool { + self.is_rx_closed.load(Ordering::Relaxed) + } +} + +impl Drop for StreamWorker { + fn drop(&mut self) { + self.close(); + trace!("drop stream {} -> {}", 0, self.dst); + } +} + +/// Represents a worker of a proxied TCP stream. Comparing with `StreamWorker`, `StreamWorker2` do +/// not require the ownership of the sent payload, but have to wait until the payload was sent. +pub struct StreamWorker2 { + dst: SocketAddrV4, + stream_tx: Option, + is_tx_closed: Arc, + is_rx_closed: Arc, + rx_close_tx: Sender<()>, +} + +impl StreamWorker2 { + /// Opens a new `StreamWorker2`. + pub async fn connect( + tx: Arc>, + src: SocketAddrV4, + dst: SocketAddrV4, + proxy: &ProxyConfig, + ) -> io::Result { + let tx_cloned = Arc::clone(&tx); + + let stream = match proxy { + ProxyConfig::Socks(remote, options) => { + socks::connect(*remote, dst, options).await? + } + }; + let stream = stream.into_inner(); + let (mut stream_rx, stream_tx) = stream.into_split(); + + // Open + tx.lock().unwrap().open(dst, src)?; + + let is_tx_closed = Arc::new(AtomicBool::new(false)); + let is_rx_closed = Arc::new(AtomicBool::new(false)); + let is_rx_closed_cloned = Arc::clone(&is_rx_closed); + let (rx_close_tx, mut rx_close_rx) = mpsc::channel(1); + + // Receive + tokio::spawn(async move { + let mut buffer = vec![0u8; u16::MAX as usize]; + let mut recv_zero: usize = 0; + loop { + let size; + + // Select + { + let stream_rx_fut = stream_rx.read(&mut buffer); + let rx_close_rx_fut = rx_close_rx.recv(); + + tokio::pin!(stream_rx_fut, rx_close_rx_fut); + + tokio::select! { + r = stream_rx_fut => match r { + Ok(this_size) => if this_size > 0 { + debug!( + "receive from proxy: {}: {} -> {} ({} Bytes)", + "TCP", dst, 0, this_size + ); + + size = this_size; + } else { + recv_zero = recv_zero.checked_add(1).unwrap_or(usize::MAX); + if recv_zero > MAX_RECV_ZERO { + size = 0; + } else { + time::sleep(Duration::from_millis(RECV_ZERO_WAIT)).await; + continue; + } + }, + Err(ref e) => { + if e.kind() == io::ErrorKind::TimedOut { + time::sleep(Duration::from_millis(TIMEDOUT_WAIT)).await; + continue; + } + + warn!("receive from proxy: {}: {} -> {}: {}", "TCP", dst, 0, e); + + size = 0; + } + }, + _ = rx_close_rx_fut => size = 0 + } + } + + if size > 0 { + if let Err(ref e) = tx.lock().unwrap().forward(dst, src, &buffer[..size]) { + warn!("handle receive: {}: {} -> {}: {}", "TCP", dst, 0, e); + } + } else { + // Close + is_rx_closed_cloned.store(true, Ordering::Relaxed); + trace!("close stream RX {} -> {}", dst, 0); + + if let Err(ref e) = tx.lock().unwrap().close(dst, src) { + warn!("handle close: {}: {} -> {}: {}", "TCP", dst, 0, e); + } + + break; + } + } + }); + + // Timeout + tokio::spawn(async move { + loop { + time::sleep(Duration::from_millis(TICK_INTERVAL)).await; + // Send + if let Err(ref e) = tx_cloned.lock().unwrap().tick(dst, src) { + if e.kind() == io::ErrorKind::NotFound { + return; + } + warn!("handle timeout: {}: {} -> {}: {}", "TCP", dst, 0, e); + } + } + }); + + trace!("open stream {} -> {}", 0, dst); + + Ok(StreamWorker2 { + dst, + stream_tx: Some(stream_tx), + is_tx_closed, + is_rx_closed, + rx_close_tx, + }) + } + + /// Sends data on the proxied stream in TCP to the destination. + pub async fn send(&mut self, payload: &[u8]) -> io::Result<()> { + // Send + match &mut self.stream_tx { + Some(tx) => tx.write_all(payload).await?, + None => return Err(io::Error::from(io::ErrorKind::NotConnected)), + } + debug!( + "send to proxy: {}: {} -> {} ({} Bytes)", + "TCP", + "0", + self.dst, + payload.len() + ); + + Ok(()) + } + + /// Shuts down the read, write, or both halves of the worker. + pub fn shutdown(&mut self, how: Shutdown) { + match how { + Shutdown::Write => { + if !self.is_tx_closed.load(Ordering::Relaxed) { + self.is_tx_closed.store(true, Ordering::Relaxed); + self.stream_tx.take().unwrap().forget(); + trace!("close stream TX {} -> {}", 0, self.dst); + } + } + Shutdown::Read => { + if !self.is_rx_closed.load(Ordering::Relaxed) { + let _ = self.rx_close_tx.try_send(()); + } + } + Shutdown::Both => { + self.shutdown(Shutdown::Write); + self.shutdown(Shutdown::Read); + } + } + } + + /// Closes the worker. + pub fn close(&mut self) { + self.shutdown(Shutdown::Both); + } + + /// Returns if the worker is closed for writing. + pub fn is_tx_closed(&self) -> bool { + self.is_tx_closed.load(Ordering::Relaxed) + } + + /// Returns if the worker is closed for reading. + pub fn is_rx_closed(&self) -> bool { + self.is_rx_closed.load(Ordering::Relaxed) + } +} + +impl Drop for StreamWorker2 { + fn drop(&mut self) { + self.close(); + trace!("drop stream {} -> {}", 0, self.dst); + } +} + +/// Trait for forwarding a datagram. +pub trait ForwardDatagram: Send { + /// Forwards datagram. + fn forward(&mut self, dst: SocketAddrV4, src: SocketAddrV4, payload: &[u8]) -> io::Result<()>; +} + +/// Represents a worker of a proxied UDP datagram. +pub struct DatagramWorker { + src: Arc, + local_port: u16, + tx_tx: UnboundedSender<(Vec, SocketAddrV4)>, + is_closed: Arc, + close_tx: Sender<()>, + close_tx2: Sender<()>, +} + +impl DatagramWorker { + /// Creates a new `DatagramWorker`. + pub async fn bind( + tx: Arc>, + src: SocketAddrV4, + proxy: &ProxyConfig, + ) -> io::Result<(DatagramWorker, u16)> { + let (mut socks_rx, mut socks_tx, local_port) = match proxy { + ProxyConfig::Socks(remote, options) => socks::bind(*remote, options).await?, + }; + + #[allow(clippy::type_complexity)] + let (tx_tx, mut tx_rx): ( + UnboundedSender<(Vec, SocketAddrV4)>, + UnboundedReceiver<(Vec, SocketAddrV4)>, + ) = mpsc::unbounded_channel(); + let a_src = Arc::new(AtomicU64::from(socket_addr_v4_to_u64(&src))); + let a_src_cloned = Arc::clone(&a_src); + let is_closed = Arc::new(AtomicBool::new(false)); + let is_closed_cloned = Arc::clone(&is_closed); + let (close_tx, mut close_rx) = mpsc::channel(1); + let (close_tx2, mut close_rx2) = mpsc::channel(1); + + // Send + tokio::spawn(async move { + loop { + let is_close; + + // Select + { + let tx_rx_fut = tx_rx.recv(); + let close_rx_fut = close_rx.recv(); + + tokio::pin!(tx_rx_fut, close_rx_fut); + + tokio::select! { + r = tx_rx_fut => match r { + Some((payload, dst)) => { + match socks_tx.send_to(payload.as_slice(), dst).await { + Ok(size) => { + debug!( + "send to proxy: {}: {} -> {} ({} Bytes)", + "UDP", local_port, dst, size + ); + }, + Err(ref e) => { + warn!("handle send: {}: {} -> {}: {}", "UDP", local_port, dst, e); + } + } + is_close = false; + } + None => is_close = false + }, + _ = close_rx_fut => is_close = true + } + } + + if is_close { + // Close + break; + } + } + }); + + // Receive + tokio::spawn(async move { + let mut buffer = vec![0u8; u16::MAX as usize]; + loop { + let size; + let mut addr = SocketAddrV4::new(Ipv4Addr::UNSPECIFIED, 0); + + // Select + { + let socks_rx_fut = socks_rx.recv_from(&mut buffer); + let close_rx_fut = close_rx2.recv(); + + tokio::pin!(socks_rx_fut, close_rx_fut); + + tokio::select! { + socks_rx_result = socks_rx_fut => { + match socks_rx_result { + Ok((this_size, this_addr)) => { + debug!( + "receive from proxy: {}: {} -> {} ({} Bytes)", + "UDP", this_addr, local_port, this_size + ); + + size = this_size; + addr = this_addr; + }, + Err(ref e) => { + if e.kind() == io::ErrorKind::TimedOut { + time::sleep(Duration::from_millis(TIMEDOUT_WAIT)).await; + continue; + } + + warn!( + "receive from proxy: {}: {} = {}: {}", + "UDP", + local_port, + u64_to_socket_addr_v4(a_src_cloned.load(Ordering::Relaxed)), + e + ); + + size = 0; + } + } + } + _ = close_rx_fut => size = 0 + }; + } + + if size > 0 { + // Send + if let Err(ref e) = tx.lock().unwrap().forward( + addr, + u64_to_socket_addr_v4(a_src_cloned.load(Ordering::Relaxed)), + &buffer[..size], + ) { + warn!( + "handle receive: {}: {} -> {}: {}", + "UDP", addr, local_port, e + ); + } + } else { + is_closed_cloned.store(true, Ordering::Relaxed); + trace!( + "close datagram {} = {}", + local_port, + u64_to_socket_addr_v4(a_src_cloned.load(Ordering::Relaxed)) + ); + + break; + } + } + }); + + trace!("create datagram {} = {}", src, local_port); + + Ok(( + DatagramWorker { + src: a_src, + local_port, + tx_tx, + is_closed, + close_tx, + close_tx2, + }, + local_port, + )) + } + + /// Sends data on the proxied datagram in UDP to the destination. + pub fn send_to(&mut self, payload: Vec, dst: SocketAddrV4) -> io::Result<()> { + // Send + if self.tx_tx.send((payload, dst)).is_err() { + return Err(io::Error::from(io::ErrorKind::NotConnected)); + } + + Ok(()) + } + + /// Sets the source of the worker. + pub fn set_src(&mut self, src: &SocketAddrV4) { + self.src + .store(socket_addr_v4_to_u64(src), Ordering::Relaxed); + trace!("set datagram {} = {}", src, self.local_port); + } + + /// Returns the source of the worker. + pub fn src(&self) -> SocketAddrV4 { + u64_to_socket_addr_v4(self.src.load(Ordering::Relaxed)) + } + + /// Returns if the worker is closed. + pub fn is_closed(&self) -> bool { + self.is_closed.load(Ordering::Relaxed) + } +} + +impl Drop for DatagramWorker { + fn drop(&mut self) { + let _ = self.close_tx.try_send(()); + let _ = self.close_tx2.try_send(()); + trace!("drop datagram {} = {}", self.src(), self.local_port); + } +} + +/// Represents a worker of a proxied UDP datagram. Comparing with `DatagramWorker`, +/// `DatagramWorker2` do not require the ownership of the sent payload, but have to wait until the +/// payload was sent. +pub struct DatagramWorker2 { + src: Arc, + local_port: u16, + socks_tx: SocksSendHalf, + is_closed: Arc, + close_tx: Sender<()>, +} + +impl DatagramWorker2 { + /// Creates a new `DatagramWorker2`. + pub async fn bind( + tx: Arc>, + src: SocketAddrV4, + proxy: &ProxyConfig, + ) -> io::Result<(DatagramWorker2, u16)> { + let (mut socks_rx, socks_tx, local_port) = match proxy { + ProxyConfig::Socks(remote, options) => socks::bind(*remote, options).await?, + }; + + let a_src = Arc::new(AtomicU64::from(socket_addr_v4_to_u64(&src))); + let a_src_cloned = Arc::clone(&a_src); + let is_closed = Arc::new(AtomicBool::new(false)); + let is_closed_cloned = Arc::clone(&is_closed); + let (close_tx, mut close_rx) = mpsc::channel(1); + + // Receive + tokio::spawn(async move { + let mut buffer = vec![0u8; u16::MAX as usize]; + loop { + let size; + let mut addr = SocketAddrV4::new(Ipv4Addr::UNSPECIFIED, 0); + + // Select + { + let socks_rx_fut = socks_rx.recv_from(&mut buffer); + let close_rx_fut = close_rx.recv(); + + tokio::pin!(socks_rx_fut, close_rx_fut); + + tokio::select! { + socks_rx_result = socks_rx_fut => { + match socks_rx_result { + Ok((this_size, this_addr)) => { + debug!( + "receive from proxy: {}: {} -> {} ({} Bytes)", + "UDP", this_addr, local_port, this_size + ); + + size = this_size; + addr = this_addr; + }, + Err(ref e) => { + if e.kind() == io::ErrorKind::TimedOut { + time::sleep(Duration::from_millis(TIMEDOUT_WAIT)).await; + continue; + } + + warn!( + "receive from proxy: {}: {} = {}: {}", + "UDP", + local_port, + u64_to_socket_addr_v4(a_src_cloned.load(Ordering::Relaxed)), + e + ); + + size = 0; + } + } + } + _ = close_rx_fut => size = 0 + }; + } + + if size > 0 { + // Send + if let Err(ref e) = tx.lock().unwrap().forward( + addr, + u64_to_socket_addr_v4(a_src_cloned.load(Ordering::Relaxed)), + &buffer[..size], + ) { + warn!( + "handle receive: {}: {} -> {}: {}", + "UDP", addr, local_port, e + ); + } + } else { + is_closed_cloned.store(true, Ordering::Relaxed); + trace!( + "close datagram {} = {}", + local_port, + u64_to_socket_addr_v4(a_src_cloned.load(Ordering::Relaxed)) + ); + + break; + } + } + }); + + trace!("create datagram {} = {}", src, local_port); + + Ok(( + DatagramWorker2 { + src: a_src, + local_port, + socks_tx, + is_closed, + close_tx, + }, + local_port, + )) + } + + /// Sends data on the proxied datagram in UDP to the destination. + pub async fn send_to(&mut self, payload: &[u8], dst: SocketAddrV4) -> io::Result { + // Send + let size = self.socks_tx.send_to(payload, dst).await?; + debug!( + "send to proxy {}: {} -> {} ({} Bytes)", + "UDP", self.local_port, dst, size + ); + + Ok(size) + } + + /// Sets the source of the worker. + pub fn set_src(&mut self, src: &SocketAddrV4) { + self.src + .store(socket_addr_v4_to_u64(src), Ordering::Relaxed); + trace!("set datagram {} = {}", src, self.local_port); + } + + /// Returns the source of the worker. + pub fn src(&self) -> SocketAddrV4 { + u64_to_socket_addr_v4(self.src.load(Ordering::Relaxed)) + } + + /// Returns if the worker is closed. + pub fn is_closed(&self) -> bool { + self.is_closed.load(Ordering::Relaxed) + } +} + +impl Drop for DatagramWorker2 { + fn drop(&mut self) { + let _ = self.close_tx.try_send(()); + trace!("drop datagram {} = {}", self.src(), self.local_port); + } +} + +fn socket_addr_v4_to_u64(addr: &SocketAddrV4) -> u64 { + let ip = u32::from(*addr.ip()); + + ((ip as u64) << 16) + addr.port() as u64 +} + +fn u64_to_socket_addr_v4(v: u64) -> SocketAddrV4 { + let port = v as u16; + let ip = (v >> 16) as u32; + let ip = Ipv4Addr::from(ip); + + SocketAddrV4::new(ip, port) +} diff --git a/Other/pcap2socks/crate/src/proxy/socks/mod.rs b/Other/pcap2socks/crate/src/proxy/socks/mod.rs new file mode 100644 index 0000000..7e1affe --- /dev/null +++ b/Other/pcap2socks/crate/src/proxy/socks/mod.rs @@ -0,0 +1,226 @@ +//! Support for handling SOCKS proxies. + +use async_socks5::{self, AddrKind, Auth}; +use log::trace; +use std::net::{Ipv4Addr, SocketAddr, SocketAddrV4}; +use std::sync::Arc; +use tokio::io::{self, BufStream}; +use tokio::net::{TcpStream, UdpSocket}; + +/// Represents the username and the password of the authentication connecting to a SOCKS5 server. +#[derive(Clone, Debug)] +pub struct SocksAuth { + username: String, + password: String, +} + +impl SocksAuth { + /// Creates a `SocksAuth`. + pub fn new(username: String, password: String) -> SocksAuth { + SocksAuth { username, password } + } +} + +/// Represents the options connecting to a SOCKS5 server. +#[derive(Clone, Debug)] +pub struct SocksOption { + force_associate_remote: bool, + force_associate_bind_addr: bool, + auth: Option, +} + +impl SocksOption { + /// Creates a `SocksOption`. + pub fn new( + force_associate_remote: bool, + force_associate_bind_addr: bool, + auth: Option, + ) -> SocksOption { + SocksOption { + force_associate_remote, + force_associate_bind_addr, + auth, + } + } + + fn auth(&self) -> Option { + self.auth + .as_ref() + .map(|auth| { + Auth::new(auth.username.clone(), auth.password.clone()) + }) + } +} + +/// Connects to a target server through a SOCKS5 proxy. +pub async fn connect( + remote: SocketAddrV4, + dst: SocketAddrV4, + options: &SocksOption, +) -> io::Result> { + let stream = TcpStream::connect(remote).await?; + let mut stream = BufStream::new(stream); + if let Err(e) = async_socks5::connect(&mut stream, dst, options.auth()).await { + return match e { + async_socks5::Error::Io(e) => Err(e), + _ => Err(io::Error::new(io::ErrorKind::Other, e)), + } + } + + Ok(stream) +} + +const RSV_SIZE: usize = 2; +const FRAG_SIZE: usize = 1; +const ATYP_SIZE: usize = 1; +const DST_ADDR_SIZE: usize = 4; +const DST_PORT_SIZE: usize = 2; +const HEADER_SIZE: usize = RSV_SIZE + FRAG_SIZE + ATYP_SIZE + DST_ADDR_SIZE + DST_PORT_SIZE; + +const ATYP_IPV4: u8 = 1; + +/// Represents the send half of a SOCKS5 UDP client. +#[allow(dead_code)] +#[derive(Debug)] +pub struct SocksSendHalf { + stream: Arc>, + socket: Arc, +} + +impl SocksSendHalf { + /// Creates a new `SocksSendHalf`. + pub fn new(stream: Arc>, socket: Arc) -> SocksSendHalf { + SocksSendHalf { stream, socket } + } + + /// Sends data on the socket to the given address. + pub async fn send_to(&mut self, payload: &[u8], dst: SocketAddrV4) -> io::Result { + let mut buf = vec![0u8; HEADER_SIZE + payload.len()]; + // RSV + // FRAG + // ATYP + buf[3] = ATYP_IPV4; + // DST.ADDR + buf[4..8].copy_from_slice(&dst.ip().octets()); + // DST.PORT + buf[8] = (dst.port() / 256) as u8; + buf[9] = (dst.port() % 256) as u8; + // Data + buf[10..].copy_from_slice(payload); + + self.socket.send(buf.as_slice()).await + } +} + +/// Represents the receive half of a SOCKS5 UDP client. +#[allow(dead_code)] +#[derive(Debug)] +pub struct SocksRecvHalf { + stream: Arc>, + socket: Arc, + buffer: Vec, +} + +impl SocksRecvHalf { + /// Creates a new `SocksRecvHalf`. + pub fn new(stream: Arc>, socket: Arc) -> SocksRecvHalf { + SocksRecvHalf { + stream, + socket, + buffer: vec![0u8; u16::MAX as usize], + } + } + + /// Receives a single datagram message on the socket. + pub async fn recv_from(&mut self, buffer: &mut [u8]) -> io::Result<(usize, SocketAddrV4)> { + let n = self.socket.recv(&mut self.buffer).await?; + // ATYP and address + match self.buffer[3] { + ATYP_IPV4 => {} + _ => unreachable!(), + } + let addr = SocketAddrV4::new( + Ipv4Addr::new( + self.buffer[4], + self.buffer[5], + self.buffer[6], + self.buffer[7], + ), + self.buffer[8] as u16 * 256 + self.buffer[9] as u16, + ); + // Buffer + let size = n - HEADER_SIZE; + buffer[..size].copy_from_slice(&self.buffer[HEADER_SIZE..n]); + + Ok((size, addr)) + } +} + +/// Binds a local address to a target server through a SOCKS5 proxy. +pub async fn bind( + remote: SocketAddrV4, + options: &SocksOption, +) -> io::Result<(SocksRecvHalf, SocksSendHalf, u16)> { + // Connect + let stream = TcpStream::connect(remote).await?; + let stream = BufStream::new(stream); + + let local = SocketAddrV4::new(Ipv4Addr::UNSPECIFIED, 0); + let socket = UdpSocket::bind(local).await?; + let local_port = socket.local_addr().unwrap().port(); + let datagram = match async_socks5::SocksDatagram::associate::( + stream, + socket, + options.auth(), + None, + ) + .await + { + Ok(datagram) => datagram, + Err(e) => return match e { + async_socks5::Error::Io(e) => Err(e), + _ => Err(io::Error::new(io::ErrorKind::Other, e)), + }, + }; + + let proxy_addr = match datagram.proxy_addr().clone() { + AddrKind::Ip(proxy_addr) => proxy_addr, + _ => unimplemented!(), + }; + let (stream, socket) = datagram.into_inner(); + + // Rewrite ASSOCIATE address + let is_rewrite = options.force_associate_remote + || match proxy_addr { + SocketAddr::V4(proxy_addr) => match options.force_associate_bind_addr { + true => false, + false => proxy_addr.ip().is_private(), + }, + SocketAddr::V6(_) => match options.force_associate_bind_addr { + true => panic!("IPv6 is not supported yet"), + false => true, + }, + }; + if is_rewrite { + let next_proxy_addr = SocketAddrV4::new(*remote.ip(), proxy_addr.port()); + socket.connect(next_proxy_addr).await?; + + trace!( + "rewrite ASSOCIATE address {} to {}", + proxy_addr, + next_proxy_addr + ); + } + + let a_stream = Arc::new(stream); + let a_stream_cloned = Arc::clone(&a_stream); + + let a_socket = Arc::new(socket); + let a_socket_cloned = Arc::clone(&a_socket); + + Ok(( + SocksRecvHalf::new(a_stream, a_socket), + SocksSendHalf::new(a_stream_cloned, a_socket_cloned), + local_port, + )) +} diff --git a/Other/pcap2socks/crate/src/stat/mod.rs b/Other/pcap2socks/crate/src/stat/mod.rs new file mode 100644 index 0000000..13a8cd0 --- /dev/null +++ b/Other/pcap2socks/crate/src/stat/mod.rs @@ -0,0 +1,31 @@ +//! Support for statistics. + +use std::sync::atomic::AtomicUsize; +use std::sync::Arc; + +/// Represents the traffic statistics. +#[derive(Clone, Debug, Default)] +pub struct Traffic { + size: Arc, + count: Arc, +} + +impl Traffic { + /// Creates a new `Traffic`. + pub fn new() -> Traffic { + Traffic { + size: Arc::new(AtomicUsize::new(0)), + count: Arc::new(AtomicUsize::new(0)), + } + } + + /// Returns the data size of the traffic. + pub fn size(&self) -> Arc { + self.size.clone() + } + + /// Returns the packet count of the traffic. + pub fn count(&self) -> Arc { + self.count.clone() + } +} diff --git a/Other/pcap2socks/crate/src/tcp/cache/mod.rs b/Other/pcap2socks/crate/src/tcp/cache/mod.rs new file mode 100644 index 0000000..1f1bc20 --- /dev/null +++ b/Other/pcap2socks/crate/src/tcp/cache/mod.rs @@ -0,0 +1,899 @@ +//! Support for caching and keeping send & receive window. + +use std::cmp::{max, min}; +use std::collections::{BTreeMap, HashSet, VecDeque}; +use std::fmt::{self, Display}; +use std::io::{Error, ErrorKind, Result}; +use std::ops::Bound::Included; +use std::time::Duration; + +use super::Timer; + +/// Represents the max distance of u32 values between packets in an u32 window. +const MAX_U32_WINDOW_SIZE: usize = 16 * 1024 * 1024; + +/// Represents if the buffer should be allocated in the initial constructor of caches. +const ALLOC_IN_INITIAL: bool = false; + +/// Represents a queue cache. The `Queue` can hold continuous bytes constantly unless they are +/// invalidated. The `Queue` can be used as a send window of a TCP connection. +#[derive(Debug)] +pub struct Queue { + buffer: Vec, + capacity: usize, + sequence: u32, + head: usize, + size: usize, + clocks: VecDeque<(u32, Timer)>, + retrans: Option, +} + +#[allow(clippy::unnecessary_lazy_evaluations)] +impl Queue { + /// Creates a new `Queue`. + #[deprecated = "Use with_capacity instead"] + pub fn new(sequence: u32) -> Queue { + Queue::with_capacity(usize::MAX, sequence) + } + + /// Creates a new `Queue` with the specified capacity. + pub fn with_capacity(capacity: usize, sequence: u32) -> Queue { + Queue { + buffer: match ALLOC_IN_INITIAL { + true => Vec::with_capacity(capacity), + false => Vec::new(), + }, + capacity, + sequence, + head: 0, + size: 0, + clocks: match ALLOC_IN_INITIAL { + true => VecDeque::with_capacity(capacity), + false => VecDeque::new(), + }, + retrans: None, + } + } + + /// Appends some bytes to the end of the queue. + pub fn append(&mut self, payload: &[u8], rto: u64) -> Result<()> { + if payload.len() > self.remaining() { + return Err(Error::new(ErrorKind::Other, "queue is full")); + } + if payload.len() > self.buffer.len() - self.size { + // Extend the buffer + let prev_len = self.buffer.len(); + let prev_tail = self.tail(); + let new_len = min( + self.capacity, + max( + self.buffer + .len() + .checked_add(self.buffer.len() / 2) + .unwrap_or(usize::MAX), + self.size + payload.len(), + ), + ); + self.buffer.resize(new_len, 0); + + // From the begin of the buffer to the tail + if prev_tail <= self.head { + // From the begin to the mid of the buffer + let len_a = min(prev_tail, new_len - prev_len); + self.buffer.copy_within(..len_a, prev_len); + + // From the mid to the tail of the buffer + let len_b = prev_tail - len_a; + if len_b > 0 { + self.buffer.copy_within(len_a..len_a + len_b, 0); + } + } + } + + // Sequence and clock + let sequence = self + .sequence + .checked_add(self.size as u32) + .unwrap_or_else(|| self.size as u32 - (u32::MAX - self.sequence)); + self.clocks.push_back((sequence, Timer::new(rto))); + + // From the tail to the end of the buffer + let tail = self.tail(); + let len_a = min(self.buffer.len() - tail, payload.len()); + self.buffer[tail..tail + len_a].copy_from_slice(&payload[..len_a]); + + // From the begin of the buffer to the head + let len_b = payload.len() - len_a; + if len_b > 0 { + self.buffer[..len_b].copy_from_slice(&payload[len_a..]); + } + + self.size += payload.len(); + + Ok(()) + } + + /// Invalidates queue to the certain sequence and returns the RTT. + pub fn invalidate_to(&mut self, sequence: u32) -> Option { + let size = sequence + .checked_sub(self.sequence) + .unwrap_or_else(|| u32::MAX - self.sequence + sequence) as usize; + + if size <= MAX_U32_WINDOW_SIZE as usize { + self.sequence = sequence; + self.size = self.size.saturating_sub(size); + if self.size == 0 { + self.head = 0; + } else { + self.head = (self.head + (size % self.buffer.len())) % self.buffer.len(); + } + + let mut rtt = None; + + // Pop clocks + while !self.clocks.is_empty() { + let dist = sequence + .checked_sub(self.clocks[0].0) + .unwrap_or_else(|| sequence + (u32::MAX - self.clocks[0].0)) + as usize; + let recv_next = match self.clocks.len() { + 1 => self.recv_next(), + _ => self.clocks[1].0, + }; + let dist_next = sequence + .checked_sub(recv_next) + .unwrap_or_else(|| sequence + (u32::MAX - recv_next)) + as usize; + + if dist <= MAX_U32_WINDOW_SIZE as usize && dist_next <= MAX_U32_WINDOW_SIZE as usize + { + let clock = self.clocks.pop_front().unwrap(); + let timer = clock.1; + if !timer.is_timedout() { + // Choose the largest RTT + if rtt.is_none() { + rtt = Some(timer.elapsed()); + + // Rollback on retransmission + if let Some(retrans) = self.retrans { + if retrans + .checked_sub(sequence) + .unwrap_or_else(|| retrans + (u32::MAX - sequence)) + as usize + <= MAX_U32_WINDOW_SIZE + { + // Karn's algorithm + rtt = None; + } + } + } + } + } else if dist <= MAX_U32_WINDOW_SIZE { + let instant = self.clocks[0].1; + self.clocks.pop_front(); + self.clocks.push_front((sequence, instant)); + break; + } else { + break; + } + } + + // Retransmission + if let Some(retrans) = self.retrans { + if self + .sequence + .checked_sub(retrans) + .unwrap_or_else(|| self.sequence + (u32::MAX - retrans)) + as usize + <= MAX_U32_WINDOW_SIZE + { + self.retrans = None; + } + } + + return rtt; + } + + None + } + + /// Returns the payload from the certain sequence of the queue in the given size. + pub fn get(&self, sequence: u32, size: usize) -> Result> { + if size == 0 { + return Ok(Vec::new()); + } + let distance = sequence + .checked_sub(self.sequence) + .unwrap_or_else(|| sequence + (u32::MAX - self.sequence)) + as usize; + if distance > self.size { + return Err(Error::new( + ErrorKind::InvalidInput, + "queue at the certain sequence does not exist", + )); + } + if self.size - distance < size { + return Err(Error::new(ErrorKind::InvalidInput, "request size too big")); + } + + let mut payload = vec![0u8; size]; + + // From the head to the end of the buffer + let head = self.head + distance; + let head = head.checked_sub(self.buffer.len()).unwrap_or(head); + let length_a = min(size, self.buffer.len() - head); + payload[..length_a].copy_from_slice(&self.buffer[head..head + length_a]); + + // From the begin of the buffer to the tail + let length_b = size - length_a; + if length_b > 0 { + payload[length_a..].copy_from_slice(&self.buffer[..length_b]); + } + + Ok(payload) + } + + /// Returns all the payload of the queue. + pub fn get_all(&self) -> Vec { + self.get(self.sequence, self.size).unwrap() + } + + /// Returns the payload which is timed out from the begin to the first byte which is not timed out. + #[deprecated = "use get_timed_out_and_update instead"] + pub fn get_timed_out(&self) -> Vec { + let mut recv_next = None; + for clock in &self.clocks { + let timer = clock.1; + if !timer.is_timedout() { + recv_next = Some(clock.0); + break; + } + } + + match recv_next { + Some(recv_next) => { + let size = recv_next + .checked_sub(self.sequence) + .unwrap_or_else(|| recv_next + (u32::MAX - self.sequence)) + as usize; + + self.get(self.sequence, size).unwrap() + } + None => self.get_all(), + } + } + + /// Returns the payload which is timed out from the begin to the first byte which is not timed out + /// and update their timeout timer. + pub fn get_timed_out_and_update(&mut self, rto: u64) -> Vec { + let mut recv_next = None; + for clock in &self.clocks { + let timer = clock.1; + if !timer.is_timedout() { + recv_next = Some(clock.0); + break; + } + } + + match recv_next { + Some(recv_next) => { + let size = recv_next + .checked_sub(self.sequence) + .unwrap_or_else(|| recv_next + (u32::MAX - self.sequence)) + as usize; + + // Update clock + while !self.clocks.is_empty() { + let next_sequence = self.clocks.front().unwrap().0; + if recv_next + .checked_sub(next_sequence) + .unwrap_or_else(|| recv_next + (u32::MAX - next_sequence)) + as usize + <= MAX_U32_WINDOW_SIZE + { + self.clocks.pop_front(); + } else { + self.clocks.push_front((self.sequence, Timer::new(rto))); + + break; + } + } + self.retrans = Some(recv_next); + + self.get(self.sequence, size).unwrap() + } + None => { + // Update clock + self.clocks.clear(); + self.clocks.push_back((self.sequence, Timer::new(rto))); + self.retrans = Some(self.recv_next()); + + self.get_all() + } + } + } + + /// Returns the capacity of the queue. + pub fn capacity(&self) -> usize { + self.capacity + } + + /// Returns the sequence of the queue. + pub fn sequence(&self) -> u32 { + self.sequence + } + + /// Returns the length of the queue. + pub fn len(&self) -> usize { + self.size + } + + /// Returns the remaining size of the window. + pub fn remaining(&self) -> usize { + self.capacity - self.size + } + + fn tail(&self) -> usize { + self.head + .checked_add(self.size) + .unwrap_or_else(|| self.size - (self.buffer.len() - self.head)) + .checked_rem(self.buffer.len()) + .unwrap_or(0) + } + + /// Returns the receive next of the queue. + pub fn recv_next(&self) -> u32 { + self.sequence + .checked_add(self.size as u32) + .unwrap_or_else(|| self.size as u32 - (u32::MAX - self.sequence)) + } + + /// Returns if the queue is empty. + pub fn is_empty(&self) -> bool { + self.size == 0 + } +} + +impl Display for Queue { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let head = self.head; + // The second checked_sub will only fall on 0 if the length of the buffer is 0 + let tail = self + .tail() + .checked_sub(1) + .unwrap_or_else(|| self.buffer.len().saturating_sub(1)); + + write!(f, "[")?; + for i in 0..self.buffer.len() { + if i != 0 { + write!(f, ", ")?; + } + + if i == head { + write!(f, "<")?; + } + write!(f, "{}", self.buffer[i])?; + if i == tail { + write!(f, ">")?; + } + } + write!(f, "]") + } +} + +#[test] +fn queue_new() { + let q = Queue::with_capacity(0, 0); + assert_eq!(q.to_string(), "[]"); +} + +#[test] +fn queue_append_overflow() { + let mut q = Queue::with_capacity(9, 0); + + let v = (0..8).into_iter().collect::>(); + q.append(v.as_slice(), 0).unwrap(); + + q.invalidate_to(2); + + let v = (8..10).into_iter().collect::>(); + q.append(v.as_slice(), 0).unwrap(); + + q.invalidate_to(6); + + let v = (10..15).into_iter().collect::>(); + q.append(v.as_slice(), 0).unwrap(); + + assert_eq!(q.to_string(), "[9, 10, 11, 12, 13, 14>, <6, 7, 8]"); +} + +#[test] +fn queue_append_overflow_overlapped() { + let mut q = Queue::with_capacity(9, 0); + + let v = (0..8).into_iter().collect::>(); + q.append(v.as_slice(), 0).unwrap(); + + q.invalidate_to(3); + + let v = (8..11).into_iter().collect::>(); + q.append(v.as_slice(), 0).unwrap(); + + q.invalidate_to(6); + + let v = (11..15).into_iter().collect::>(); + q.append(v.as_slice(), 0).unwrap(); + + assert_eq!(q.to_string(), "[9, 10, 11, 12, 13, 14>, <6, 7, 8]"); +} + +#[test] +fn queue_append_overflow_overlapped_2() { + let mut q = Queue::with_capacity(9, 0); + + let v = (0..8).into_iter().collect::>(); + q.append(v.as_slice(), 0).unwrap(); + + q.invalidate_to(6); + + let v = (8..14).into_iter().collect::>(); + q.append(v.as_slice(), 0).unwrap(); + + let v = (14..15).into_iter().collect::>(); + q.append(v.as_slice(), 0).unwrap(); + + assert_eq!(q.to_string(), "[9, 10, 11, 12, 13, 14>, <6, 7, 8]"); +} + +/// Represents a window cache. The `Window` can hold discontinuous bytes and pop out them when +/// they are completed. The `Window` can be used as a receive window of a TCP connection. +#[derive(Debug)] +pub struct Window { + buffer: Vec, + capacity: usize, + sequence: u32, + head: usize, + /// Represents the expected size from the head to the tail. NOT all the bytes in [head, head + size) are filled. + size: usize, + /// Represents edges of filled values. Use an u64 instead of an u32 because the sequence is used as a ring. + edges: BTreeMap, +} + +impl Window { + /// Creates a new `Window`. + #[deprecated = "Use with_capacity instead"] + pub fn new(sequence: u32) -> Window { + Window::with_capacity(usize::MAX, sequence) + } + + /// Creates a new `Window` with the specified capacity. + pub fn with_capacity(capacity: usize, sequence: u32) -> Window { + Window { + buffer: match ALLOC_IN_INITIAL { + true => Vec::with_capacity(capacity), + false => Vec::new(), + }, + capacity, + sequence, + head: 0, + size: 0, + edges: BTreeMap::new(), + } + } + + /// Appends some bytes to the window and returns continuous bytes from the beginning. + #[allow(clippy::unnecessary_lazy_evaluations)] + pub fn append(&mut self, sequence: u32, payload: &[u8]) -> Result>> { + let sub_sequence = sequence + .checked_sub(self.sequence) + .unwrap_or_else(|| sequence + (u32::MAX - self.sequence)) + as usize; + let (sequence, payload, sub_sequence) = if sub_sequence > MAX_U32_WINDOW_SIZE { + let recv_next = sequence + .checked_add(payload.len() as u32) + .unwrap_or_else(|| payload.len() as u32 - (u32::MAX - sequence)); + let sub_recv_next_to_sequence = recv_next + .checked_sub(self.sequence) + .unwrap_or_else(|| sequence + (u32::MAX - recv_next)); + + if sub_recv_next_to_sequence as usize <= MAX_U32_WINDOW_SIZE { + let sub_sequence = self + .sequence + .checked_sub(sequence) + .unwrap_or_else(|| self.sequence + (u32::MAX - sequence)); + (self.sequence, &payload[sub_sequence as usize..], 0) + } else { + return Ok(None); + } + } else { + (sequence, payload, sub_sequence) + }; + + let size = sub_sequence + payload.len(); + if size > self.capacity { + return Err(Error::new(ErrorKind::Other, "window is full")); + } + if size > self.buffer.len() { + // Extend the buffer + let prev_len = self.buffer.len(); + let new_len = min( + self.capacity, + max( + self.buffer + .len() + .checked_add(self.buffer.len() / 2) + .unwrap_or(usize::MAX), + size, + ), + ); + self.buffer.resize(new_len, 0); + + // From the begin of the buffer to the tail + let ranges = self + .edges + .iter() + .map(|(sequence, &size)| { + let sub_sequence = sequence + .checked_sub(self.sequence as u64) + .unwrap_or_else(|| sequence + (u32::MAX - self.sequence) as u64) + as usize; + let mut begin = self.get_tail(self.head, sub_sequence, prev_len); + let end = self.get_tail(begin, size, prev_len); + if end <= begin { + begin = 0; + } + + (begin, end) + }) + .filter(|(begin, end)| *begin < self.head || *end <= self.head) + .collect::>(); + for (begin, end) in ranges { + // From the begin to the mid of the buffer + let len_a = min( + (new_len - prev_len).saturating_sub(begin), + end - begin, + ); + if len_a > 0 { + self.buffer + .copy_within(begin..begin + len_a, prev_len + begin); + } + + // From the mid to the tail of the buffer + let len_b = (end - begin) - len_a; + if len_b > 0 { + self.buffer + .copy_within(begin + len_a..end, begin + len_a - (new_len - prev_len)); + } + } + } + + // TODO: copy valid bytes only + // TODO: copy bytes into empty ranges only + // To the end of the buffer + let tail = self.get_tail(self.head, sub_sequence, self.buffer.len()); + let len_a = min(self.buffer.len() - tail, payload.len()); + self.buffer[tail..tail + len_a].copy_from_slice(&payload[..len_a]); + + // From the begin of the buffer + let len_b = payload.len() - len_a; + if len_b > 0 { + self.buffer[..len_b].copy_from_slice(&payload[len_a..]); + } + + // Update size + let recv_next = sequence + .checked_add(payload.len() as u32) + .unwrap_or_else(|| payload.len() as u32 - (u32::MAX - sequence)); + let record_recv_next = self + .sequence + .checked_add(self.size as u32) + .unwrap_or_else(|| self.size as u32 - (u32::MAX - self.sequence)); + let sub_recv_next = recv_next + .checked_sub(record_recv_next) + .unwrap_or_else(|| recv_next + (u32::MAX - record_recv_next)); + if sub_recv_next as usize <= MAX_U32_WINDOW_SIZE { + self.size += sub_recv_next as usize; + } + + // Insert and merge ranges + { + let mut sequence = sequence as u64; + if (sequence as u32) < self.sequence { + sequence += u32::MAX as u64; + } + + // Select ranges which can be merged in a loop + let mut end = sequence + payload.len() as u64; + loop { + let mut pop_keys = Vec::new(); + for (&key, &value) in self.edges.range(( + Included(&sequence), + Included(&(sequence + payload.len() as u64)), + )) { + pop_keys.push(key); + end = max(end, key + value as u64); + } + + if pop_keys.is_empty() { + break; + } + + // Pop + for ref pop_key in pop_keys { + self.edges.remove(pop_key); + } + } + + // Select the previous range if exists + let mut prev_key = None; + for &key in self.edges.keys() { + if key < sequence { + prev_key = Some(key); + } + } + + // Merge previous range + let mut size = end - sequence; + if let Some(prev_key) = prev_key { + let prev_size = *self.edges.get(&prev_key).unwrap(); + if prev_key + (prev_size as u64) >= sequence { + size += sequence - prev_key; + sequence = prev_key; + } + } + + // Insert range + self.edges.insert(sequence, size as usize); + } + + // Pop if possible + let first_key = *self.edges.keys().next().unwrap(); + if first_key as u32 == self.sequence { + let size = self.edges.remove(&first_key).unwrap(); + + // Shrink range sequence is possible + if ((u32::MAX - self.sequence) as usize) < size { + let keys = self.edges.keys().copied().collect::>(); + + for key in keys { + let value = self.edges.remove(&key).unwrap(); + self.edges.insert(key - u32::MAX as u64, value); + } + } + + // Continuous payload + let mut cont_payload = vec![0u8; size]; + + // From the head to the end of the buffer + let len_a = min(size, self.buffer.len() - self.head); + cont_payload[..len_a].copy_from_slice(&self.buffer[self.head..self.head + len_a]); + + // From the begin of the buffer to the tail + let len_b = size - len_a; + if len_b > 0 { + cont_payload[len_a..].copy_from_slice(&self.buffer[..len_b]); + } + + self.sequence = self + .sequence + .checked_add(size as u32) + .unwrap_or_else(|| size as u32 - (u32::MAX - self.sequence)); + self.head = (self.head + (size % self.buffer.len())) % self.buffer.len(); + self.size -= cont_payload.len(); + + return Ok(Some(cont_payload)); + } + + Ok(None) + } + + /// Returns the sequence of the window. + pub fn sequence(&self) -> u32 { + self.sequence + } + + /// Returns the length of the window. Not all bytes in [sequence, sequence + len) are filled. + pub fn len(&self) -> usize { + self.size + } + + /// Returns the receive next of the window. + #[allow(clippy::unnecessary_lazy_evaluations)] + pub fn recv_next(&self) -> u32 { + self.sequence + .checked_add(self.size as u32) + .unwrap_or_else(|| self.size as u32 - (u32::MAX - self.sequence)) + } + + /// Returns the remaining size of the window. + pub fn remaining(&self) -> usize { + self.capacity - self.size + } + + fn tail(&self) -> usize { + self.get_tail(self.head, self.size, self.buffer.len()) + } + + #[allow(clippy::unnecessary_lazy_evaluations)] + fn get_tail(&self, head: usize, size: usize, max: usize) -> usize { + let mod_sub_sequence = size.checked_rem(max).unwrap_or(0); + head.checked_add(mod_sub_sequence) + .unwrap_or_else(|| mod_sub_sequence - (max - head)) + .checked_rem(max) + .unwrap_or(0) + } + + /// Returns the filled edges of the window. + #[allow(clippy::unnecessary_lazy_evaluations)] + pub fn filled(&self) -> Vec<(u32, u32)> { + let mut v = Vec::new(); + for (&sequence, &size) in &self.edges { + let begin = sequence.checked_sub(u32::MAX as u64).unwrap_or(sequence) as u32; + let end = begin + .checked_add(size as u32) + .unwrap_or_else(|| size as u32 - (u32::MAX - begin)); + v.push((begin, end)); + } + + v + } + + /// Returns if the window is empty. + pub fn is_empty(&self) -> bool { + self.size == 0 + } +} + +impl Display for Window { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let head = self.head; + // The second checked_sub will only fall on 0 if the length of the buffer is 0 + let tail = self + .tail() + .checked_sub(1) + .unwrap_or_else(|| self.buffer.len().saturating_sub(1)); + + let mut edge_begin_set = HashSet::new(); + let mut edge_end_set = HashSet::new(); + self.edges.iter().for_each(|(sequence, &size)| { + let sub_sequence = sequence + .checked_sub(self.sequence as u64) + .unwrap_or_else(|| sequence + (u32::MAX - self.sequence) as u64) + as usize; + let begin = self.get_tail(head, sub_sequence, self.buffer.len()); + let end = self + .get_tail(begin, size, self.buffer.len()) + .checked_sub(1) + .unwrap_or(self.buffer.len() - 1); + edge_begin_set.insert(begin); + edge_end_set.insert(end); + }); + + write!(f, "[")?; + for i in 0..self.buffer.len() { + if i != 0 { + write!(f, ", ")?; + } + + if i == head { + write!(f, "<")?; + } + if edge_begin_set.contains(&i) { + write!(f, "<")?; + } + write!(f, "{}", self.buffer[i])?; + if edge_end_set.contains(&i) { + write!(f, ">")?; + } + if i == tail { + write!(f, ">")?; + } + } + write!(f, "]") + } +} + +#[test] +fn window_new() { + let w = Window::with_capacity(0, 0); + assert_eq!(w.to_string(), "[]"); +} + +#[test] +fn window_append() { + let mut w = Window::with_capacity(9, 0); + + let v = (0..8).into_iter().collect::>(); + w.append(0, v.as_slice()).unwrap(); + + let v = (12..14).into_iter().collect::>(); + w.append(12, v.as_slice()).unwrap(); + + let v = (8..12).into_iter().collect::>(); + w.append(8, v.as_slice()).unwrap(); + + let v = (15..16).into_iter().collect::>(); + w.append(15, v.as_slice()).unwrap(); + + assert_eq!(w.to_string(), "[8, 9, 10, 11, 12, 13, <6, <15>>]"); +} + +#[test] +fn window_append_overflow() { + let mut w = Window::with_capacity(9, 0); + + let v = (6..8).into_iter().collect::>(); + w.append(6, v.as_slice()).unwrap(); + + let v = (0..5).into_iter().collect::>(); + w.append(0, v.as_slice()).unwrap(); + + let v = (8..10).into_iter().collect::>(); + w.append(8, v.as_slice()).unwrap(); + + let v = (10..14).into_iter().collect::>(); + w.append(10, v.as_slice()).unwrap(); + + assert_eq!(w.to_string(), "[9, 10, 11, 12, 13>>, <0, <6, 7, 8]"); +} + +#[test] +fn window_append_overflow_overlapped() { + let mut w = Window::with_capacity(9, 0); + + let v = (6..8).into_iter().collect::>(); + w.append(6, v.as_slice()).unwrap(); + + let v = (0..5).into_iter().collect::>(); + w.append(0, v.as_slice()).unwrap(); + + let v = (8..11).into_iter().collect::>(); + w.append(8, v.as_slice()).unwrap(); + + let v = (11..14).into_iter().collect::>(); + w.append(11, v.as_slice()).unwrap(); + + assert_eq!(w.to_string(), "[9, 10, 11, 12, 13>>, <0, <6, 7, 8]"); +} + +#[test] +fn window_append_overflow_overlapped_2() { + let mut w = Window::with_capacity(9, 0); + + let v = (7..8).into_iter().collect::>(); + w.append(7, v.as_slice()).unwrap(); + + let v = (0..6).into_iter().collect::>(); + w.append(0, v.as_slice()).unwrap(); + + let v = (8..14).into_iter().collect::>(); + w.append(8, v.as_slice()).unwrap(); + + let v = (14..15).into_iter().collect::>(); + w.append(14, v.as_slice()).unwrap(); + + assert_eq!(w.to_string(), "[9, 10, 11, 12, 13, 14>>, <0, <7, 8]"); +} + +#[test] +fn window_append_prev_and_next() { + let mut w = Window::with_capacity(8, 0); + + let v = (4..6).into_iter().collect::>(); + w.append(4, v.as_slice()).unwrap(); + + let v = (0..2).into_iter().collect::>(); + w.append(0, v.as_slice()).unwrap(); + + let v = (0..3).into_iter().collect::>(); + let r = w.append(0, v.as_slice()).unwrap().unwrap(); + assert_eq!(r.len(), 1); + + let v = (252..254).into_iter().collect::>(); + w.append(u32::MAX - 4, v.as_slice()).unwrap(); + + let v = (11..13).into_iter().collect::>(); + w.append(1, v.as_slice()).unwrap(); + + assert_eq!(w.to_string(), "[0, 1, 2, <0, <4, 5>>]"); +} diff --git a/Other/pcap2socks/crate/src/tcp/mod.rs b/Other/pcap2socks/crate/src/tcp/mod.rs new file mode 100644 index 0000000..c1b52ad --- /dev/null +++ b/Other/pcap2socks/crate/src/tcp/mod.rs @@ -0,0 +1,1206 @@ +//! Support for tracking TCP connections. + +use log::trace; +use std::cmp::{max, min}; +use std::collections::VecDeque; +use std::fmt::{self, Display}; +use std::net::SocketAddrV4; +use std::time::{Duration, Instant}; +use tokio::io; + +mod cache; +use cache::{Queue, Window}; + +/// Represents a timer. +#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +pub struct Timer { + instant: Instant, + timeout: Duration, +} + +impl Timer { + /// Creates a new `Timer`. + pub fn new(timeout: u64) -> Timer { + Timer { + instant: Instant::now(), + timeout: Duration::from_millis(timeout), + } + } + + /// Returns the amount of time elapsed since this timer was created. + pub fn elapsed(&self) -> Duration { + self.instant.elapsed() + } + + /// Returns if the timer is timed out. + pub fn is_timedout(&self) -> bool { + self.instant.elapsed() > self.timeout + } +} + +/// Represents the max distance of `u32` values between packets in an `u32` window. +const MAX_U32_WINDOW_SIZE: usize = 16 * 1024 * 1024; + +#[derive(Clone, Debug, Eq, Ord, PartialEq, PartialOrd)] +/// Enumeration of congestion control algorithms. +pub enum TcpCcAlgorithms { + /// Represents the TCP Tahoe congestion control algorithm. + Tahoe, + /// Represents the TCP Reno congestion control algorithm. + Reno, + /// Represents the TCP CUBIC congestion control algorithm. + Cubic, +} + +/// Represents the initial slow start threshold rate for congestion window in a TCP connection. +const INITIAL_SSTHRESH_RATE: usize = 100; + +/// Trait for TCP congestion control. +pub trait TcpCc: Send + Sync { + /// Indicates a TCP ACK event. + fn ack(&mut self, size: usize); + + /// Indicates a TCP ACK event with RTT. + fn ack_rtt(&mut self, size: usize, rtt: f64); + + /// Indicates a TCP timed out event. + fn timedout(&mut self); + + /// Indicates a TCP fast retransmission event. + fn fast_retransmission(&mut self); + + /// Returns the congestion window of the TCP connection. + fn cwnd(&self) -> usize; +} + +/// Represents the TCP Tahoe congestion control state of a TCP connection. +#[derive(Clone, Debug)] +pub struct TcpTahoeCcState { + src: SocketAddrV4, + dst: SocketAddrV4, + mss: usize, + cwnd: usize, + ssthresh: usize, + cwnd_count: usize, +} + +impl TcpTahoeCcState { + /// Creates a new `TcpTahoeCcState`. + pub fn new(src: SocketAddrV4, dst: SocketAddrV4, mss: usize) -> TcpTahoeCcState { + TcpTahoeCcState { + src, + dst, + mss, + cwnd: mss, + ssthresh: mss.saturating_mul(INITIAL_SSTHRESH_RATE), + cwnd_count: 0, + } + } + + fn set_cwnd(&mut self, cwnd: usize) { + self.cwnd = max(self.mss, cwnd); + trace!( + "set TCP congestion window of {} -> {} to {}", + self.dst, + self.src, + self.cwnd + ); + } + + fn update_ssthresh(&mut self) { + self.ssthresh = max(self.cwnd / 2, self.mss.saturating_mul(2)); + trace!( + "update TCP slow start threshold of {} -> {} to {}", + self.dst, + self.src, + self.ssthresh + ); + } + + fn slow_start(&mut self, size: usize) -> usize { + let remain = self.ssthresh - self.cwnd; + let delta = min(remain, size); + + self.set_cwnd(self.cwnd.saturating_add(delta)); + + size - delta + } + + #[allow(clippy::unnecessary_lazy_evaluations)] + fn congestion_control(&mut self, size: usize) { + let remain = self.cwnd - self.cwnd_count; + + let size_mod = size % self.cwnd; + self.cwnd_count = self + .cwnd_count + .checked_add(size_mod) + .unwrap_or_else(|| size_mod - (self.cwnd - self.cwnd_count)) + % self.cwnd; + + if size >= remain { + let size_remain = size - remain; + + let n = (size_remain / self.cwnd).saturating_add(1); + self.set_cwnd( + self.cwnd + .saturating_add(self.mss.saturating_mul(n)), + ) + } + } +} + +impl TcpCc for TcpTahoeCcState { + fn ack(&mut self, size: usize) { + let mut size = size; + // Slow start + if self.cwnd < self.ssthresh { + size = self.slow_start(size); + } + + // Congestion avoidance + if size > 0 { + self.congestion_control(size); + } + } + + fn ack_rtt(&mut self, size: usize, _: f64) { + self.ack(size); + } + + fn timedout(&mut self) { + self.update_ssthresh(); + self.set_cwnd(self.mss); + self.cwnd_count = 0; + } + + fn fast_retransmission(&mut self) { + self.timedout(); + } + + fn cwnd(&self) -> usize { + self.cwnd + } +} + +impl Display for TcpTahoeCcState { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!( + f, + "TCP Tahoe State: {} -> {}, cwnd = {}, ssthresh = {}", + self.dst, self.src, self.cwnd, self.ssthresh + ) + } +} + +/// Represents the TCP Reno congestion control state of a TCP connection. +#[derive(Clone, Debug)] +pub struct TcpRenoCcState { + src: SocketAddrV4, + dst: SocketAddrV4, + mss: usize, + cwnd: usize, + ssthresh: usize, + cwnd_count: usize, +} + +impl TcpRenoCcState { + /// Creates a new `TcpRenoCcState`. + pub fn new(src: SocketAddrV4, dst: SocketAddrV4, mss: usize) -> TcpRenoCcState { + TcpRenoCcState { + src, + dst, + mss, + cwnd: mss, + ssthresh: mss.saturating_mul(INITIAL_SSTHRESH_RATE), + cwnd_count: 0, + } + } + + fn set_cwnd(&mut self, cwnd: usize) { + self.cwnd = max(self.mss, cwnd); + trace!( + "set TCP congestion window of {} -> {} to {}", + self.dst, + self.src, + self.cwnd + ); + } + + fn update_ssthresh(&mut self) { + self.ssthresh = max(self.cwnd / 2, self.mss.saturating_mul(2)); + trace!( + "update TCP slow start threshold of {} -> {} to {}", + self.dst, + self.src, + self.ssthresh + ); + } + + fn slow_start(&mut self, size: usize) -> usize { + let remain = self.ssthresh - self.cwnd; + let delta = min(remain, size); + + self.set_cwnd(self.cwnd.saturating_add(delta)); + + size - delta + } + + #[allow(clippy::unnecessary_lazy_evaluations)] + fn congestion_control(&mut self, size: usize) { + let remain = self.cwnd - self.cwnd_count; + + let size_mod = size % self.cwnd; + self.cwnd_count = self + .cwnd_count + .checked_add(size_mod) + .unwrap_or_else(|| size_mod - (self.cwnd - self.cwnd_count)) + % self.cwnd; + + if size >= remain { + let size_remain = size - remain; + + let n = (size_remain / self.cwnd).saturating_add(1); + self.set_cwnd( + self.cwnd + .saturating_add(self.mss.saturating_mul(n)), + ) + } + } +} + +impl TcpCc for TcpRenoCcState { + fn ack(&mut self, size: usize) { + let mut size = size; + // Slow start + if self.cwnd < self.ssthresh { + size = self.slow_start(size); + } + + // Congestion avoidance + if size > 0 { + self.congestion_control(size); + } + } + + fn ack_rtt(&mut self, size: usize, _: f64) { + self.ack(size); + } + + fn timedout(&mut self) { + self.update_ssthresh(); + self.set_cwnd(self.mss); + self.cwnd_count = 0; + } + + fn fast_retransmission(&mut self) { + self.update_ssthresh(); + self.set_cwnd(self.ssthresh); + self.cwnd_count = 0; + } + + fn cwnd(&self) -> usize { + self.cwnd + } +} + +impl Display for TcpRenoCcState { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!( + f, + "TCP Reno State: {} -> {}, cwnd = {}, ssthresh = {}", + self.dst, self.src, self.cwnd, self.ssthresh + ) + } +} + +const CC_CUBIC_C: f64 = 0.4; +const CC_CUBIC_BETA: f64 = 0.7; + +/// Represents the TCP CUBIC congestion control state of a TCP connection. +#[derive(Clone, Debug)] +pub struct TcpCubicCcState { + src: SocketAddrV4, + dst: SocketAddrV4, + w_max: usize, + w_last_max: usize, + k: f64, + last_update: Instant, + mss: usize, + cwnd: usize, + ssthresh: usize, + cwnd_count: usize, +} + +impl TcpCubicCcState { + /// Creates a new `TcpCubicCcState`. + pub fn new(src: SocketAddrV4, dst: SocketAddrV4, mss: usize) -> TcpCubicCcState { + TcpCubicCcState { + src, + dst, + w_max: mss.saturating_mul(INITIAL_SSTHRESH_RATE), + w_last_max: mss.saturating_mul(INITIAL_SSTHRESH_RATE), + k: 0.0, + last_update: Instant::now(), + mss, + cwnd: mss, + ssthresh: mss.saturating_mul(INITIAL_SSTHRESH_RATE), + cwnd_count: 0, + } + } + + fn update(&mut self) { + self.w_max = self.cwnd; + // Fast convergence + if self.w_max < self.w_last_max { + self.w_last_max = self.w_max; + self.w_max = ((self.w_max as f64) * (1.0 + CC_CUBIC_BETA) / 2.0) as usize; + } else { + self.w_last_max = self.w_max + } + trace!( + "update TCP window max of {} -> {} to {}", + self.dst, + self.src, + self.w_max + ); + + self.k = ((self.w_max as f64) * (1.0 - CC_CUBIC_BETA) / CC_CUBIC_C) + .min(f64::MAX) + .cbrt(); + trace!("update TCP K of {} -> {} to {}", self.dst, self.src, self.k); + + self.last_update = Instant::now(); + } + + fn set_cwnd(&mut self, cwnd: usize) { + self.cwnd = max(self.mss, cwnd); + trace!( + "set TCP congestion window of {} -> {} to {}", + self.dst, + self.src, + self.cwnd + ); + } + + fn update_ssthresh(&mut self) { + self.ssthresh = max( + (self.cwnd as f64 * CC_CUBIC_BETA) as usize, + self.mss.saturating_mul(2), + ); + trace!( + "update TCP slow start threshold of {} -> {} to {}", + self.dst, + self.src, + self.ssthresh + ); + } + + fn reset(&mut self) { + self.w_max = self.mss.saturating_mul(INITIAL_SSTHRESH_RATE); + trace!( + "reset TCP window max of {} -> {} to {}", + self.dst, + self.src, + self.w_max + ); + + self.k = 0.0; + trace!("reset TCP K of {} -> {} to {}", self.dst, self.src, self.k); + + self.last_update = Instant::now(); + } + + fn slow_start(&mut self, size: usize) -> usize { + let remain = self.ssthresh - self.cwnd; + let delta = min(remain, size); + + self.set_cwnd(self.cwnd.saturating_add(delta)); + + size - delta + } + + #[allow(clippy::unnecessary_lazy_evaluations)] + fn congestion_control_fallback(&mut self, size: usize) { + let remain = self.cwnd - self.cwnd_count; + + let size_mod = size % self.cwnd; + self.cwnd_count = self + .cwnd_count + .checked_add(size_mod) + .unwrap_or_else(|| size_mod - (self.cwnd - self.cwnd_count)) + % self.cwnd; + + if size >= remain { + let size_remain = size - remain; + + let n = (size_remain / self.cwnd) + .saturating_add(1); + self.set_cwnd( + self.cwnd.saturating_add(self.mss.saturating_mul(n)), + ) + } + } + + fn w_t(&self, t: f64) -> usize { + (CC_CUBIC_C * (t - self.k).powi(3) + self.w_max as f64) + .max(0.0) + .min(usize::MAX as f64) as usize + } + + fn w_est(&self, rtt: f64) -> usize { + (self.w_max as f64 * CC_CUBIC_BETA + + (3.0 * (1.0 - CC_CUBIC_BETA) / (1.0 + CC_CUBIC_BETA)) * (self.t() / rtt)) + .min(usize::MAX as f64) as usize + } + + fn t(&self) -> f64 { + self.last_update.elapsed().as_secs_f64() + } + + fn congestion_control(&mut self, rtt: f64) { + let w_t = self.w_t((self.t() + rtt).min(f64::MAX)); + let w_est = self.w_est(rtt); + if w_t < w_est { + // TCP-friendly region + self.set_cwnd(w_est); + } else { + // Concave or convex region + self.set_cwnd(w_t); + } + } +} + +impl TcpCc for TcpCubicCcState { + fn ack(&mut self, size: usize) { + let mut size = size; + // Slow start + if self.cwnd <= self.ssthresh { + size = self.slow_start(size); + } + + // Congestion avoidance + if size > 0 { + self.congestion_control_fallback(size); + } + } + + fn ack_rtt(&mut self, size: usize, rtt: f64) { + let mut size = size; + // Slow start + if self.cwnd <= self.ssthresh { + size = self.slow_start(size); + } + + // Congestion avoidance + if size > 0 { + self.congestion_control(rtt); + } + } + + fn timedout(&mut self) { + self.reset(); + self.update_ssthresh(); + self.set_cwnd((self.cwnd as f64 * CC_CUBIC_BETA) as usize); + self.cwnd_count = 0; + } + + fn fast_retransmission(&mut self) { + self.update(); + self.update_ssthresh(); + self.set_cwnd((self.cwnd as f64 * CC_CUBIC_BETA) as usize); + self.cwnd_count = 0; + } + + fn cwnd(&self) -> usize { + self.cwnd + } +} + +impl Display for TcpCubicCcState { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!( + f, + "TCP CUBIC State: {} -> {}, cwnd = {}, ssthresh = {}, w_max = {}", + self.dst, self.src, self.cwnd, self.ssthresh, self.w_max + ) + } +} + +/// Represents the receive window size. +const RECV_WINDOW: u16 = u16::MAX; + +/// Represents the maximum size of extra cache in a TCP connection. +const MAX_QUEUE: usize = 16777216; + +/// Represents if the RTO computation is enabled. +const ENABLE_RTO_COMPUTE: bool = true; +/// Represents the initial timeout for a retransmission in a TCP connection. +const INITIAL_RTO: u64 = 1000; +/// Represents the minimum timeout for a retransmission in a TCP connection. +const MIN_RTO: u64 = 1000; +/// Represents the maximum timeout for a retransmission in a TCP connection. +const MAX_RTO: u64 = 60000; + +const RTO_K: f64 = 4.0; +const RTO_ALPHA: f64 = 1.0 / 8.0; +const RTO_BETA: f64 = 1.0 / 4.0; + +/// Represents if the congestion control is enabled. +const ENABLE_CC: bool = true; +/// Represents the congestion control algorithm. +const CC_ALGORITHM: TcpCcAlgorithms = TcpCcAlgorithms::Reno; + +/// Represents the TX state of a TCP connection. +pub struct TcpTxState { + src: SocketAddrV4, + dst: SocketAddrV4, + src_window: usize, + src_wscale: Option, + sack_perm: bool, + sequence: u32, + acknowledgement: u32, + window: u16, + sacks: Option>, + delayed_ack: bool, + cache: Queue, + cache_syn: Option, + cache_fin: Option, + cache_fin_retrans: bool, + queue: VecDeque, + queue_fin: bool, + rto: u64, + srtt: Option, + rttvar: Option, + cc: Option>, +} + +impl TcpTxState { + /// Creates a new `TcpTxState`. + #[allow(clippy::too_many_arguments)] + pub fn new( + src: SocketAddrV4, + dst: SocketAddrV4, + sequence: u32, + acknowledgement: u32, + src_window: u16, + src_wscale: Option, + sack_perm: bool, + wscale: Option, + mss: usize, + ) -> TcpTxState { + TcpTxState { + src, + dst, + src_window: (src_window as usize) << src_wscale.unwrap_or(0), + src_wscale, + sack_perm, + sequence, + acknowledgement, + window: RECV_WINDOW, + sacks: None, + delayed_ack: false, + cache: Queue::with_capacity( + (RECV_WINDOW as usize) << wscale.unwrap_or(0) as usize, + sequence, + ), + cache_syn: None, + cache_fin: None, + cache_fin_retrans: true, + queue: VecDeque::new(), + queue_fin: false, + rto: INITIAL_RTO, + srtt: None, + rttvar: None, + cc: match ENABLE_CC { + true => match CC_ALGORITHM { + TcpCcAlgorithms::Tahoe => Some(Box::new(TcpTahoeCcState::new(src, dst, mss))), + TcpCcAlgorithms::Reno => Some(Box::new(TcpRenoCcState::new(src, dst, mss))), + TcpCcAlgorithms::Cubic => Some(Box::new(TcpCubicCcState::new(src, dst, mss))), + }, + false => None, + }, + } + } + + /// Sets the source window of the TCP connection. + pub fn set_src_window(&mut self, window: usize) { + self.src_window = window; + trace!( + "set TCP source window of {} -> {} to {}", + self.dst, + self.src, + window + ); + } + + /// Adds sequence to the TCP connection. + #[allow(clippy::unnecessary_lazy_evaluations)] + pub fn add_sequence(&mut self, n: u32) { + self.sequence = self + .sequence + .checked_add(n) + .unwrap_or_else(|| n - (u32::MAX - self.sequence)); + trace!( + "add TCP sequence of {} -> {} to {}", + self.dst, + self.src, + self.sequence + ); + } + + /// Adds acknowledgement to the TCP connection. + #[allow(clippy::unnecessary_lazy_evaluations)] + pub fn add_acknowledgement(&mut self, n: u32) { + self.acknowledgement = self + .acknowledgement + .checked_add(n) + .unwrap_or_else(|| n - (u32::MAX - self.acknowledgement)); + trace!( + "add TCP acknowledgement of {} -> {} to {}", + self.dst, + self.src, + self.acknowledgement + ); + } + + /// Sets the window of the TCP connection. + pub fn set_window(&mut self, window: u16) { + self.window = window; + trace!( + "set TCP window of {} -> {} to {}", + self.dst, + self.src, + window + ); + } + + /// Sets the SACKs of the TCP connection. + pub fn set_sacks(&mut self, sacks: &Vec<(u32, u32)>) { + if sacks.is_empty() { + self.sacks = None; + trace!("remove TCP SACK of {} -> {}", self.dst, self.src); + } else { + let size = min(4, sacks.len()); + self.sacks = Some(Vec::from(&sacks[..size])); + + let mut desc = format!("[{}, {}]", sacks[0].0, sacks[0].1); + if sacks.len() > 1 { + desc.push_str(format!(" and {} more", sacks.len() - 1).as_str()); + } + trace!("set TCP SACK of {} -> {} to {}", self.dst, self.src, desc); + } + } + + /// Acknowledges to the given sequence of the TCP connection. + #[allow(clippy::unnecessary_lazy_evaluations)] + pub fn acknowledge(&mut self, sequence: u32) { + let mut rtt = None; + + // SYN + if let Some(instant) = self.cache_syn { + let send_next = self.sequence; + if sequence + .checked_sub(send_next) + .unwrap_or_else(|| sequence + (u32::MAX - send_next)) as usize + <= MAX_U32_WINDOW_SIZE + { + rtt = Some(instant.elapsed()); + + self.cache_syn = None; + trace!("acknowledge TCP SYN of {} -> {}", self.dst, self.src); + + // Update TCP sequence + self.add_sequence(1); + } + } + + // ACK + let sub_sequence = sequence + .checked_sub(self.cache.sequence()) + .unwrap_or_else(|| sequence + (u32::MAX - self.cache.sequence())); + if sub_sequence > 0 && sub_sequence as usize <= MAX_U32_WINDOW_SIZE { + // Invalidate cache + let cache_rtt = self.cache.invalidate_to(sequence); + if rtt.is_none() { + rtt = cache_rtt; + } + trace!( + "acknowledge TCP cache of {} -> {} to sequence {}", + self.dst, + self.src, + sequence + ); + + // Congestion control + if let Some(cc) = &mut self.cc { + match self.srtt { + Some(srtt) => cc.ack_rtt(sub_sequence as usize, srtt), + None => cc.ack(sub_sequence as usize), + } + } + } + + // FIN + if let Some(timer) = self.cache_fin { + if sequence + .checked_sub(self.cache.recv_next()) + .unwrap_or_else(|| sequence + (u32::MAX - self.cache.recv_next())) + as usize + <= MAX_U32_WINDOW_SIZE + { + if rtt.is_none() && !self.cache_fin_retrans && !timer.is_timedout() { + rtt = Some(timer.elapsed()); + } + + self.cache_fin = None; + self.cache_fin_retrans = false; + trace!("acknowledge TCP FIN of {} -> {}", self.dst, self.src); + + // Update TCP sequence + self.add_sequence(1); + } + } + + // Update RTO + if let Some(rtt) = rtt { + self.update_rto(rtt); + } + } + + /// Updates the TCP SYN timer of the TCP connection. + pub fn update_syn_timer(&mut self) { + self.cache_syn = Some(Instant::now()); + trace!("update TCP SYN timer of {} -> {}", self.dst, self.src); + } + + /// Updates the TCP FIN timer of the TCP connection. + pub fn update_fin_timer(&mut self) { + if self.cache_fin.is_some() { + self.cache_fin_retrans = true; + } + self.cache_fin = Some(Timer::new(self.rto)); + trace!("update TCP FIN timer of {} -> {}", self.dst, self.src); + } + + /// Set the TCP delayed ACK to the cache of the TCP connection. + pub fn set_delayed_ack(&mut self) { + self.delayed_ack = true; + + trace!( + "set TCP delayed ACK to TCP cache of {} -> {}", + self.dst, + self.src + ); + } + + /// Clears the TCP delayed ACK from the cache of the TCP connection. + pub fn clear_delayed_ack(&mut self) { + self.delayed_ack = false; + + trace!( + "clear TCP delayed ACK to TCP cache of {} -> {}", + self.dst, + self.src + ); + } + + /// Appends the payload from the queue to the cache of the TCP connection. + pub fn append_cache(&mut self, size: usize) -> io::Result> { + let payload = self.queue.drain(..size).collect::>(); + + // Append to cache + trace!( + "append {} Bytes to TCP cache of {} -> {}", + payload.len(), + self.dst, + self.src + ); + // TODO: intermediate performance degradation + self.cache.append(&payload, self.rto)?; + + Ok(payload) + } + + /// Appends the TCP FIN from the queue to the cache of the TCP connection. + pub fn append_cache_fin(&mut self) { + self.queue_fin = false; + trace!( + "append TCP FIN to TCP cache of {} -> {}", + self.dst, + self.src + ); + self.update_fin_timer(); + } + + /// Appends the payload to the queue of the TCP connection. + pub fn append_queue(&mut self, payload: &[u8]) { + // TODO: major performance degradation + self.queue.extend(payload); + trace!( + "append {} Bytes to TCP queue of {} -> {}", + payload.len(), + self.dst, + self.src + ); + } + + /// Appends the TCP FIN to the queue of the TCP connection. + pub fn append_queue_fin(&mut self) { + self.queue_fin = true; + trace!( + "append TCP FIN to TCP queue of {} -> {}", + self.dst, + self.src + ); + } + + fn set_rto(&mut self, rto: u64) { + if ENABLE_RTO_COMPUTE { + let rto = min(MAX_RTO, max(MIN_RTO, rto)); + + self.rto = rto; + trace!("set TCP RTO of {} -> {} to {}", self.dst, self.src, rto); + } + } + + /// Doubles the RTO of the TCP connection. + pub fn double_rto(&mut self) { + self.set_rto(self.rto.saturating_mul(2)); + } + + /// Updates the RTO of the TCP connection. + pub fn update_rto(&mut self, rtt: Duration) { + let rtt = rtt.as_secs_f64(); + + let srtt; + let rttvar; + match self.srtt { + Some(prev_srtt) => { + // RTTVAR + let prev_rttvar = self.rttvar.unwrap_or(prev_srtt / 2.0); + rttvar = (1.0 - RTO_BETA) * prev_rttvar + RTO_BETA * (prev_srtt - rtt).abs(); + + // SRTT + srtt = (1.0 - RTO_ALPHA) * prev_srtt + RTO_ALPHA * rtt; + } + None => { + // SRTT + srtt = rtt; + + // RTTVAR + rttvar = rtt / 2.0; + } + } + + // SRTT + self.srtt = Some(srtt); + trace!("set TCP SRTT of {} -> {} to {}", self.dst, self.src, srtt); + + // RTTVAR + self.rttvar = Some(rttvar); + trace!( + "set TCP RTTVAR of {} -> {} to {}", + self.dst, + self.src, + rttvar + ); + + // RTO + let rto_f = srtt + (rttvar * RTO_K).max(1.0); + let rto = (rto_f * 1000.0).min(u64::MAX as f64) as u64; + self.set_rto(rto); + } + + /// Returns the source window of the TCP connection. The source window represents the received + /// window from the source and indicates how much payload it can receive next. + pub fn src_window(&self) -> usize { + self.src_window + } + + /// Returns the source window scale of the TCP connection. + pub fn src_wscale(&self) -> Option { + self.src_wscale + } + + /// Returns if the SACK is permitted of the TCP connection. + pub fn sack_perm(&self) -> bool { + self.sack_perm + } + + /// Returns the sequence of the TCP connection. + pub fn sequence(&self) -> u32 { + self.sequence + } + + /// Returns the acknowledgement of the TCP connection. + pub fn acknowledgement(&self) -> u32 { + self.acknowledgement + } + + /// Returns the window of the TCP connection. + pub fn window(&self) -> u16 { + self.window + } + + /// Returns the half of the max window of the TCP connection. + pub fn half_max_window(&self) -> u16 { + RECV_WINDOW / 2 + } + + /// Returns the SACKs of the TCP connection. + pub fn sacks(&self) -> &Option> { + &self.sacks + } + + /// Returns if the TCP delayed ACK exists of the TCP connection. + pub fn delayed_ack(&self) -> bool { + self.delayed_ack + } + + /// Returns the cache of the TCP connection. + pub fn cache(&self) -> &Queue { + &self.cache + } + + /// Returns the mutable cache of the TCP connection. + pub fn cache_mut(&mut self) -> &mut Queue { + &mut self.cache + } + + /// Returns the TCP SYN in the cache of the TCP connection. + pub fn cache_syn(&self) -> Option { + self.cache_syn + } + + /// Returns the TCP FIN in the cache of the TCP connection. + pub fn cache_fin(&self) -> Option { + self.cache_fin + } + + /// Returns the queue of the TCP connection. + pub fn queue(&self) -> &VecDeque { + &self.queue + } + + /// Returns if the TCP FIN is in the queue of the TCP connection. + pub fn queue_fin(&self) -> bool { + self.queue_fin + } + + /// Returns the remaining size of the queue of the TCP connection. + pub fn queue_remaining(&self) -> usize { + MAX_QUEUE.saturating_sub(self.queue().len()) + } + + /// Returns the RTO of the TCP connection. + pub fn rto(&self) -> u64 { + self.rto + } + + /// Returns the next RTO of the TCP connection. + pub fn next_rto(&self) -> u64 { + max(MIN_RTO, self.rto.checked_mul(2).unwrap_or(MAX_RTO)) + } + + /// Returns the congestion control state of the TCP connection. + pub fn cc(&self) -> &Option> { + &self.cc + } + + /// Returns the mutable congestion control state of the TCP connection. + pub fn cc_mut(&mut self) -> &mut Option> { + &mut self.cc + } + + /// Returns the send window of the TCP connection. The send window is the minimum one between + /// the congestion window and the source window. + pub fn send_window(&self) -> usize { + if let Some(cc) = &self.cc { + min(cc.cwnd(), self.src_window) + } else { + self.src_window + } + } +} + +impl Display for TcpTxState { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "TCP TX State: {} -> {}", self.dst, self.src) + } +} + +/// Represents the RX state of a TCP connection. +#[derive(Debug)] +pub struct TcpRxState { + src: SocketAddrV4, + dst: SocketAddrV4, + recv_next: u32, + acknowledgement: u32, + duplicate: usize, + last_retrans: Option, + wscale: u8, + sack_perm: bool, + cache: Window, + fin_sequence: Option, +} + +impl TcpRxState { + /// Creates a new `TcpRxState`, the sequence is the sequence in the TCP SYN packet. + pub fn new( + src: SocketAddrV4, + dst: SocketAddrV4, + sequence: u32, + wscale: u8, + sack_perm: bool, + ) -> TcpRxState { + let recv_next = sequence.checked_add(1).unwrap_or(0); + + trace!("admit TCP SYN of {} -> {}", src, dst); + + TcpRxState { + src, + dst, + recv_next, + acknowledgement: 0, + duplicate: 0, + last_retrans: None, + wscale, + sack_perm, + cache: Window::with_capacity((RECV_WINDOW as usize) << wscale as usize, recv_next), + fin_sequence: None, + } + } + + /// Adds receive next to the TCP connection. + #[allow(clippy::unnecessary_lazy_evaluations)] + pub fn add_recv_next(&mut self, n: u32) { + self.recv_next = self + .recv_next + .checked_add(n) + .unwrap_or_else(|| n - (u32::MAX - self.recv_next)); + trace!( + "add TCP receive next of {} -> {} to {}", + self.src, + self.dst, + self.recv_next + ); + } + + /// Admits the acknowledgement of the TCP connection. + pub fn admit(&mut self, acknowledgement: u32) { + if self.acknowledgement == acknowledgement { + self.duplicate = self.duplicate.saturating_add(1); + trace!( + "increase TCP duplicate of {} -> {} at {} to {}", + self.src, + self.dst, + acknowledgement, + self.duplicate + ); + } else { + self.clear_duplicate(); + self.acknowledgement = acknowledgement; + trace!( + "admit TCP acknowledgement of {} -> {} at {} to {}", + self.src, + self.dst, + acknowledgement, + self.duplicate + ); + } + } + + fn clear_duplicate(&mut self) { + self.duplicate = 0; + trace!( + "clear TCP duplicate of {} -> {} at {}", + self.src, + self.dst, + self.acknowledgement + ); + } + + fn update_last_retrans(&mut self) { + self.last_retrans = Some(Instant::now()); + trace!( + "update TCP last retransmission of {} -> {}", + self.src, + self.dst, + ); + } + + /// Admits a retransmission of the TCP connection. + pub fn admit_retrans(&mut self) { + self.clear_duplicate(); + self.update_last_retrans(); + } + + /// Appends the payload to the cache of the TCP connection. + pub fn append_cache(&mut self, sequence: u32, payload: &[u8]) -> io::Result>> { + trace!( + "append {} Bytes to TCP cache of {} -> {}", + payload.len(), + self.src, + self.dst + ); + self.cache.append(sequence, payload) + } + + /// Sets the TCP FIN sequence of the TCP connection. + pub fn set_fin_sequence(&mut self, sequence: u32) { + self.fin_sequence = Some(sequence); + trace!( + "set TCP FIN sequence of {} -> {} to {}", + self.src, + self.dst, + sequence + ); + } + + /// Admits the TCP FIN of the TCP connection. + pub fn admit_fin(&mut self) { + self.fin_sequence = None; + trace!("admit TCP FIN of {} -> {}", self.src, self.dst); + } + + /// Returns the receive next of the TCP connection. + pub fn recv_next(&self) -> u32 { + self.recv_next + } + + /// Returns the duplicate acknowledgement count of the TCP connection. + pub fn duplicate(&self) -> usize { + self.duplicate + } + + /// Returns the last retransmission of the TCP connection. + pub fn last_retrans(&self) -> &Option { + &self.last_retrans + } + + /// Returns the window scale of the TCP connection. + pub fn wscale(&self) -> u8 { + self.wscale + } + + /// Returns if the SACK is permitted of the TCP connection. + pub fn sack_perm(&self) -> bool { + self.sack_perm + } + + /// Return the cache of the TCP connection. + pub fn cache(&self) -> &Window { + &self.cache + } + + /// Returns the TCP FIN sequence of the TCP connection. + pub fn fin_sequence(&self) -> Option { + self.fin_sequence + } +} + +impl Display for TcpRxState { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "TCP RX State: {} -> {}", self.src, self.dst) + } +} diff --git a/Other/pcap2socks/crate/vendor/netifs/Cargo.toml b/Other/pcap2socks/crate/vendor/netifs/Cargo.toml new file mode 100644 index 0000000..725cc3b --- /dev/null +++ b/Other/pcap2socks/crate/vendor/netifs/Cargo.toml @@ -0,0 +1,18 @@ +[package] +name = "netifs" +version = "0.3.0" +authors = ["Manuel Stocker "] +edition = "2018" +description = "Cross-platform utility library to enumerate local network interfaces." +keywords = ["networking"] +categories = ["network-programming"] +homepage = "https://github.com/mensi/netifs-rs" +repository = "https://github.com/mensi/netifs-rs" +license = "Apache-2.0" + +[dependencies] +winapi = { version = "0.3.8", features = ["minwindef", "winerror", "ifdef", "ws2def", "ws2ipdef"] } +libc = "0.2" +eui48 = { version = "0.5", default-features = false } +ipnetwork = "0.16.0" +widestring = "0.4.0" \ No newline at end of file diff --git a/Other/pcap2socks/crate/vendor/netifs/LICENSE b/Other/pcap2socks/crate/vendor/netifs/LICENSE new file mode 100644 index 0000000..7a4a3ea --- /dev/null +++ b/Other/pcap2socks/crate/vendor/netifs/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. \ No newline at end of file diff --git a/Other/pcap2socks/crate/vendor/netifs/src/lib.rs b/Other/pcap2socks/crate/vendor/netifs/src/lib.rs new file mode 100644 index 0000000..6ac1188 --- /dev/null +++ b/Other/pcap2socks/crate/vendor/netifs/src/lib.rs @@ -0,0 +1,76 @@ +//! Utility create to enumerate local network interfaces. +//! +//! This crate was tested on Windows 10 and Ubuntu 19.10 +//! +//! # Example +//! +//! ``` +//! use netifs::get_interfaces; +//! +//! fn main() { +//! for interface in get_interfaces().expect("Getting interfaces failed") { +//! println!("{}", interface.name); +//! if let Some(mac) = interface.mac_address { +//! println!("\tMAC: {}", mac.to_hex_string()); +//! } +//! for ip in interface.ip_addresses { +//! println!("\tIP: {}", ip); +//! } +//! } +//! } + +use std::ffi::CStr; +use libc::c_char; +use eui48::MacAddress; +use ipnetwork::IpNetwork; + +#[cfg(windows)] +mod winapi_um_iptypes; +#[cfg(windows)] +mod winapi_shared_ifdef; + +/// Represents a network interface. +#[derive(Debug, Clone)] +pub struct Interface { + pub name: String, + pub display_name: String, + pub ip_addresses: Vec, + pub mac_address: Option, + pub mtu: usize, + pub is_loopback: bool, + pub is_up: bool, +} + +impl Interface { + /// Create a new interface with the given name. + pub fn new(name: String) -> Self { + Self { + name: name.clone(), + display_name: name, + ip_addresses: Vec::new(), + mac_address: None, + mtu: 0, + is_loopback: false, + is_up: false, + } + } +} + +#[cfg(windows)] +#[path = "windows.rs"] +mod platform; + +#[cfg(not(windows))] +#[path = "unix.rs"] +mod platform; + +pub(crate) fn cstr_to_string(cstr: *const c_char) -> String { + unsafe { + CStr::from_ptr(cstr).to_string_lossy().to_owned().to_string() + } +} + +/// Retrieve the network interfaces. +pub fn get_interfaces() -> Result, String> { + platform::get_interfaces() +} diff --git a/Other/pcap2socks/crate/vendor/netifs/src/unix.rs b/Other/pcap2socks/crate/vendor/netifs/src/unix.rs new file mode 100644 index 0000000..d06688f --- /dev/null +++ b/Other/pcap2socks/crate/vendor/netifs/src/unix.rs @@ -0,0 +1,108 @@ +use std::collections::HashMap; +use std::net::{IpAddr, Ipv4Addr, Ipv6Addr}; +use libc; +use eui48::MacAddress; +use ipnetwork::IpNetwork; + +use crate::{Interface, cstr_to_string}; + +#[repr(C)] +pub struct ifreq { + pub ifr_name: [u8; libc::IFNAMSIZ], + pub ifr_mtu: libc::c_int, +} + +pub fn get_interfaces() -> Result, String> { + let mut res: HashMap = HashMap::new(); + + unsafe { + let mut addrptr: *mut libc::ifaddrs = 0 as *mut libc::ifaddrs; + let ret = libc::getifaddrs(&mut addrptr); + if ret != 0 { + return Err(format!("getifaddrs call failed with code: {}", ret)); + } + + let mut current = addrptr; + while !current.is_null() { + let addr = *current; + let name = cstr_to_string(addr.ifa_name); + + let interface = res.entry(name.clone()).or_insert(Interface::new(name.clone())); + if addr.ifa_flags & libc::IFF_LOOPBACK as u32 != 0 { + interface.is_loopback = true; + } + if addr.ifa_flags & libc::IFF_UP as u32 != 0 { + interface.is_up = true; + } + + let sock = libc::socket(libc::AF_INET, libc::SOCK_DGRAM, 0); + if sock >= 0 { + let mut req = ifreq { + ifr_name: [0; libc::IFNAMSIZ], + ifr_mtu: 0, + }; + + copy_slice(&mut req.ifr_name, name.as_bytes()); + + if libc::ioctl(sock, libc::SIOCGIFMTU, &mut req) >= 0 { + interface.mtu = req.ifr_mtu as usize; + } + } + + match (*addr.ifa_addr).sa_family as libc::c_int { + libc::AF_PACKET => { + let sll = *(addr.ifa_addr as *const libc::sockaddr_ll); + interface.mac_address = match MacAddress::from_bytes(&sll.sll_addr[..6]) { + Ok(m) => Some(m), + Err(_) => {eprintln!("Unable to parse mac address on {}", name); None} + }; + }, + libc::AF_INET => { + let sin = *(addr.ifa_addr as *const libc::sockaddr_in); + let sin_mask = *(addr.ifa_netmask as *const libc::sockaddr_in); + assert_eq!(sin.sin_family, sin_mask.sin_family); + let ip = IpAddr::V4(Ipv4Addr::from(u32::from_be(sin.sin_addr.s_addr))); + let mask = IpAddr::V4(Ipv4Addr::from(u32::from_be(sin_mask.sin_addr.s_addr))); + + match IpNetwork::with_netmask(ip, mask) { + Ok(ipn) => interface.ip_addresses.push(ipn), + Err(e) => return Err(format!("Unable to construct IpNetwork: {}", e)) + } + }, + libc::AF_INET6 => { + let sin6 = *(addr.ifa_addr as *const libc::sockaddr_in6); + let sin6_mask = *(addr.ifa_netmask as *const libc::sockaddr_in6); + assert_eq!(sin6.sin6_family, sin6_mask.sin6_family); + let ip = IpAddr::V6(Ipv6Addr::from(sin6.sin6_addr.s6_addr)); + let mask = IpAddr::V6(Ipv6Addr::from(sin6_mask.sin6_addr.s6_addr)); + + match IpNetwork::with_netmask(ip, mask) { + Ok(ipn) => interface.ip_addresses.push(ipn), + Err(e) => return Err(format!("Unable to construct IpNetwork: {}", e)) + } + }, + x => { + eprintln!("Unknown sa_family: {}", x); + } + } + + assert_ne!(current, addr.ifa_next); + current = addr.ifa_next; + } + + libc::freeifaddrs(addrptr); + } + + Ok(res.into_iter().map(|(_key, val)| val).collect()) +} + +fn copy_slice(dst: &mut [u8], src: &[u8]) -> usize { + let mut c = 0; + + for (d, s) in dst.iter_mut().zip(src.iter()) { + *d = *s; + c += 1; + } + + c +} diff --git a/Other/pcap2socks/crate/vendor/netifs/src/winapi_shared_ifdef.rs b/Other/pcap2socks/crate/vendor/netifs/src/winapi_shared_ifdef.rs new file mode 100644 index 0000000..d6b4727 --- /dev/null +++ b/Other/pcap2socks/crate/vendor/netifs/src/winapi_shared_ifdef.rs @@ -0,0 +1,291 @@ +// Licensed under the Apache License, Version 2.0 +// or the MIT license +// , at your option. +// All files in the project carrying such notice may not be copied, modified, or distributed +// except according to those terms. + +#![allow(non_snake_case)] +#![allow(non_upper_case_globals)] +#![allow(non_camel_case_types)] +#![allow(dead_code)] + +// Unfortunately it looks like winapi upstream is barely maintained, so here is a +// copy of winapi::shared::ifdef from git until it gets released to crates.io. + +use winapi::{STRUCT, ENUM}; +use core; + +macro_rules! UNION { + ($(#[$attrs:meta])* union $name:ident { + [$stype:ty; $ssize:expr], + $($variant:ident $variant_mut:ident: $ftype:ty,)+ + }) => ( + #[repr(C)] $(#[$attrs])* + pub struct $name([$stype; $ssize]); + impl Copy for $name {} + impl Clone for $name { + #[inline] + fn clone(&self) -> $name { *self } + } + #[cfg(feature = "impl-default")] + impl Default for $name { + #[inline] + fn default() -> $name { unsafe { $crate::_core::mem::zeroed() } } + } + impl $name {$( + #[inline] + pub unsafe fn $variant(&self) -> &$ftype { + &*(self as *const _ as *const $ftype) + } + #[inline] + pub unsafe fn $variant_mut(&mut self) -> &mut $ftype { + &mut *(self as *mut _ as *mut $ftype) + } + )+} + ); + ($(#[$attrs:meta])* union $name:ident { + [$stype32:ty; $ssize32:expr] [$stype64:ty; $ssize64:expr], + $($variant:ident $variant_mut:ident: $ftype:ty,)+ + }) => ( + #[repr(C)] $(#[$attrs])* #[cfg(target_pointer_width = "32")] + pub struct $name([$stype32; $ssize32]); + #[repr(C)] $(#[$attrs])* #[cfg(target_pointer_width = "64")] + pub struct $name([$stype64; $ssize64]); + impl Copy for $name {} + impl Clone for $name { + #[inline] + fn clone(&self) -> $name { *self } + } + #[cfg(feature = "impl-default")] + impl Default for $name { + #[inline] + fn default() -> $name { unsafe { $crate::_core::mem::zeroed() } } + } + impl $name {$( + #[inline] + pub unsafe fn $variant(&self) -> &$ftype { + &*(self as *const _ as *const $ftype) + } + #[inline] + pub unsafe fn $variant_mut(&mut self) -> &mut $ftype { + &mut *(self as *mut _ as *mut $ftype) + } + )+} + ); +} + +macro_rules! BITFIELD { + ($base:ident $field:ident: $fieldtype:ty [ + $($thing:ident $set_thing:ident[$r:expr],)+ + ]) => { + impl $base {$( + #[inline] + pub fn $thing(&self) -> $fieldtype { + let size = core::mem::size_of::<$fieldtype>() * 8; + self.$field << (size - $r.end) >> (size - $r.end + $r.start) + } + #[inline] + pub fn $set_thing(&mut self, val: $fieldtype) { + let mask = ((1 << ($r.end - $r.start)) - 1) << $r.start; + self.$field &= !mask; + self.$field |= (val << $r.start) & mask; + } + )+} + } +} + +use winapi::shared::basetsd::{UINT16, UINT32, ULONG32, ULONG64}; +use winapi::shared::guiddef::GUID; +use winapi::shared::ntdef::{BOOLEAN, UCHAR, ULONG, USHORT, WCHAR}; + +pub type NET_IF_COMPARTMENT_ID = UINT32; +pub type PNET_IF_COMPARTMENT_ID = *mut NET_IF_COMPARTMENT_ID; +pub const NET_IF_COMPARTMENT_ID_UNSPECIFIED: NET_IF_COMPARTMENT_ID = 0; +pub const NET_IF_COMPARTMENT_ID_PRIMARY: NET_IF_COMPARTMENT_ID = 1; +pub type NET_IF_NETWORK_GUID = GUID; +pub type PNET_IF_NETWORK_GUID = *mut NET_IF_NETWORK_GUID; +ENUM!{enum NET_IF_OPER_STATUS { + NET_IF_OPER_STATUS_UP = 1, + NET_IF_OPER_STATUS_DOWN = 2, + NET_IF_OPER_STATUS_TESTING = 3, + NET_IF_OPER_STATUS_UNKNOWN = 4, + NET_IF_OPER_STATUS_DORMANT = 5, + NET_IF_OPER_STATUS_NOT_PRESENT = 6, + NET_IF_OPER_STATUS_LOWER_LAYER_DOWN = 7, +}} +pub type PNET_IF_OPER_STATUS = *mut NET_IF_OPER_STATUS; +pub type NET_IF_OBJECT_ID = ULONG32; +pub type PNET_IF_OBJECT_ID = *mut NET_IF_OBJECT_ID; +ENUM!{enum NET_IF_ADMIN_STATUS { + NET_IF_ADMIN_STATUS_UP = 1, + NET_IF_ADMIN_STATUS_DOWN = 2, + NET_IF_ADMIN_STATUS_TESTING = 3, +}} +pub type PNET_IF_ADMIN_STATUS = *mut NET_IF_ADMIN_STATUS; +pub type NET_IF_COMPARTMENT_SCOPE = UINT32; +pub type PNET_IF_COMPARTMENT_SCOPE = *mut NET_IF_COMPARTMENT_SCOPE; +pub const NET_IF_COMPARTMENT_SCOPE_UNSPECIFIED: NET_IF_COMPARTMENT_SCOPE = 0; +pub const NET_IF_COMPARTMENT_SCOPE_ALL: NET_IF_COMPARTMENT_SCOPE = -1i32 as u32; +ENUM!{enum NET_IF_RCV_ADDRESS_TYPE { + NET_IF_RCV_ADDRESS_TYPE_OTHER = 1, + NET_IF_RCV_ADDRESS_TYPE_VOLATILE = 2, + NET_IF_RCV_ADDRESS_TYPE_NON_VOLATILE = 3, +}} +pub type PNET_IF_RCV_ADDRESS_TYPE = *mut NET_IF_RCV_ADDRESS_TYPE; +STRUCT!{struct NET_IF_RCV_ADDRESS_LH { + ifRcvAddressType: NET_IF_RCV_ADDRESS_TYPE, + ifRcvAddressLength: USHORT, + ifRcvAddressOffset: USHORT, +}} +pub type PNET_IF_RCV_ADDRESS_LH = *mut NET_IF_RCV_ADDRESS_LH; +STRUCT!{struct NET_IF_ALIAS_LH { + ifAliasLength: USHORT, + ifAliasOffset: USHORT, +}} +pub type PNET_IF_ALIAS_LH = *mut NET_IF_ALIAS_LH; +STRUCT!{struct NET_LUID_LH_Info { + bitfield: ULONG64, +}} +BITFIELD!{NET_LUID_LH_Info bitfield: ULONG64 [ + Reserved set_Reserved[0..24], + NetLuidIndex set_NetLuidIndex[24..48], + IfType set_IfType[48..64], +]} +UNION!{union NET_LUID_LH { + [u64; 1], + Value Value_mut: ULONG64, + Info Info_mut: NET_LUID_LH_Info, +}} +pub type PNET_LUID_LH = *mut NET_LUID_LH; +pub type NET_IF_RCV_ADDRESS = NET_IF_RCV_ADDRESS_LH; +pub type PNET_IF_RCV_ADDRESS = *mut NET_IF_RCV_ADDRESS; +pub type NET_IF_ALIAS = NET_IF_ALIAS_LH; +pub type PNET_IF_ALIAS = *mut NET_IF_ALIAS; +pub type NET_LUID = NET_LUID_LH; +pub type PNET_LUID = *mut NET_LUID; +pub type IF_LUID = NET_LUID; +pub type PIF_LUID = *mut NET_LUID; +pub type NET_IFINDEX = ULONG; +pub type PNET_IFINDEX = *mut NET_IFINDEX; +pub type NET_IFTYPE = UINT16; +pub type PNET_IFTYPE = *mut NET_IFTYPE; +pub type IF_INDEX = NET_IFINDEX; +pub type PIF_INDEX = *mut NET_IFINDEX; +ENUM!{enum NET_IF_CONNECTION_TYPE { + NET_IF_CONNECTION_DEDICATED = 1, + NET_IF_CONNECTION_PASSIVE = 2, + NET_IF_CONNECTION_DEMAND = 3, + NET_IF_CONNECTION_MAXIMUM = 4, +}} +pub type PNET_IF_CONNECTION_TYPE = *mut NET_IF_CONNECTION_TYPE; +ENUM!{enum TUNNEL_TYPE { + TUNNEL_TYPE_NONE = 0, + TUNNEL_TYPE_OTHER = 1, + TUNNEL_TYPE_DIRECT = 2, + TUNNEL_TYPE_6TO4 = 11, + TUNNEL_TYPE_ISATAP = 13, + TUNNEL_TYPE_TEREDO = 14, + TUNNEL_TYPE_IPHTTPS = 15, +}} +pub type PTUNNEL_TYPE = *mut TUNNEL_TYPE; +ENUM!{enum NET_IF_ACCESS_TYPE { + NET_IF_ACCESS_LOOPBACK = 1, + NET_IF_ACCESS_BROADCAST = 2, + NET_IF_ACCESS_POINT_TO_POINT = 3, + NET_IF_ACCESS_POINT_TO_MULTI_POINT = 4, + NET_IF_ACCESS_MAXIMUM = 5, +}} +pub type PNET_IF_ACCESS_TYPE = *mut NET_IF_ACCESS_TYPE; +ENUM!{enum NET_IF_DIRECTION_TYPE { + NET_IF_DIRECTION_SENDRECEIVE, + NET_IF_DIRECTION_SENDONLY, + NET_IF_DIRECTION_RECEIVEONLY, + NET_IF_DIRECTION_MAXIMUM, +}} +pub type PNET_IF_DIRECTION_TYPE = *mut NET_IF_DIRECTION_TYPE; +ENUM!{enum NET_IF_MEDIA_CONNECT_STATE { + MediaConnectStateUnknown, + MediaConnectStateConnected, + MediaConnectStateDisconnected, +}} +pub type PNET_IF_MEDIA_CONNECT_STATE = *mut NET_IF_MEDIA_CONNECT_STATE; +ENUM!{enum NET_IF_MEDIA_DUPLEX_STATE { + MediaDuplexStateUnknown = 0, + MediaDuplexStateHalf = 1, + MediaDuplexStateFull = 2, +}} +pub type PNET_IF_MEDIA_DUPLEX_STATE = *mut NET_IF_MEDIA_DUPLEX_STATE; +STRUCT!{struct NET_PHYSICAL_LOCATION_LH { + BusNumber: ULONG, + SlotNumber: ULONG, + FunctionNumber: ULONG, +}} +pub type PNET_PHYSICAL_LOCATION_LH = *mut NET_PHYSICAL_LOCATION_LH; +pub const IF_MAX_STRING_SIZE: usize = 256; +pub const IF_MAX_PHYS_ADDRESS_LENGTH: usize = 32; +STRUCT!{struct IF_COUNTED_STRING_LH { + Length: USHORT, + String: [WCHAR; IF_MAX_STRING_SIZE + 1], +}} +pub type PIF_COUNTED_STRING_LH = *mut IF_COUNTED_STRING_LH; +STRUCT!{struct IF_PHYSICAL_ADDRESS_LH { + Length: USHORT, + Address: [UCHAR; IF_MAX_PHYS_ADDRESS_LENGTH], +}} +pub type PIF_PHYSICAL_ADDRESS_LH = *mut IF_PHYSICAL_ADDRESS_LH; +pub type NET_PHYSICAL_LOCATION = NET_PHYSICAL_LOCATION_LH; +pub type PNET_PHYSICAL_LOCATION = *mut NET_PHYSICAL_LOCATION; +pub type IF_COUNTED_STRING = IF_COUNTED_STRING_LH; +pub type PIF_COUNTED_STRING = *mut IF_COUNTED_STRING; +pub type IF_PHYSICAL_ADDRESS = IF_PHYSICAL_ADDRESS_LH; +pub type PIF_PHYSICAL_ADDRESS = *mut IF_PHYSICAL_ADDRESS; +ENUM!{enum IF_ADMINISTRATIVE_STATE { + IF_ADMINISTRATIVE_DISABLED = 0, + IF_ADMINISTRATIVE_ENABLED = 1, + IF_ADMINISTRATIVE_DEMANDDIAL = 2, +}} +pub type PIF_ADMINISTRATIVE_STATE = *mut IF_ADMINISTRATIVE_STATE; +ENUM!{enum IF_OPER_STATUS { + IfOperStatusUp = 1, + IfOperStatusDown, + IfOperStatusTesting, + IfOperStatusUnknown, + IfOperStatusDormant, + IfOperStatusNotPresent, + IfOperStatusLowerLayerDown, +}} +STRUCT!{struct NDIS_INTERFACE_INFORMATION { + ifOperStatus: NET_IF_OPER_STATUS, + ifOperStatusFlags: ULONG, + MediaConnectState: NET_IF_MEDIA_CONNECT_STATE, + MediaDuplexState: NET_IF_MEDIA_DUPLEX_STATE, + ifMtu: ULONG, + ifPromiscuousMode: BOOLEAN, + ifDeviceWakeUpEnable: BOOLEAN, + XmitLinkSpeed: ULONG64, + RcvLinkSpeed: ULONG64, + ifLastChange: ULONG64, + ifCounterDiscontinuityTime: ULONG64, + ifInUnknownProtos: ULONG64, + ifInDiscards: ULONG64, + ifInErrors: ULONG64, + ifHCInOctets: ULONG64, + ifHCInUcastPkts: ULONG64, + ifHCInMulticastPkts: ULONG64, + ifHCInBroadcastPkts: ULONG64, + ifHCOutOctets: ULONG64, + ifHCOutUcastPkts: ULONG64, + ifHCOutMulticastPkts: ULONG64, + ifHCOutBroadcastPkts: ULONG64, + ifOutErrors: ULONG64, + ifOutDiscards: ULONG64, + ifHCInUcastOctets: ULONG64, + ifHCInMulticastOctets: ULONG64, + ifHCInBroadcastOctets: ULONG64, + ifHCOutUcastOctets: ULONG64, + ifHCOutMulticastOctets: ULONG64, + ifHCOutBroadcastOctets: ULONG64, + CompartmentId: NET_IF_COMPARTMENT_ID, + SupportedStatistics: ULONG, +}} +pub type PNDIS_INTERFACE_INFORMATION = *mut NDIS_INTERFACE_INFORMATION; \ No newline at end of file diff --git a/Other/pcap2socks/crate/vendor/netifs/src/winapi_um_iptypes.rs b/Other/pcap2socks/crate/vendor/netifs/src/winapi_um_iptypes.rs new file mode 100644 index 0000000..0e6d7c0 --- /dev/null +++ b/Other/pcap2socks/crate/vendor/netifs/src/winapi_um_iptypes.rs @@ -0,0 +1,502 @@ +// Licensed under the Apache License, Version 2.0 +// or the MIT license +// , at your option. +// All files in the project carrying such notice may not be copied, modified, or distributed +// except according to those terms. + +#![allow(non_snake_case)] +#![allow(non_upper_case_globals)] +#![allow(non_camel_case_types)] +#![allow(dead_code)] + +// Unfortunately it looks like winapi upstream is barely maintained, so here is a +// copy of winapi::um::iptypes from git until it gets released to crates.io. + +use libc::time_t; +use winapi::{STRUCT, ENUM}; +use core; + +macro_rules! UNION { + ($(#[$attrs:meta])* union $name:ident { + [$stype:ty; $ssize:expr], + $($variant:ident $variant_mut:ident: $ftype:ty,)+ + }) => ( + #[repr(C)] $(#[$attrs])* + pub struct $name([$stype; $ssize]); + impl Copy for $name {} + impl Clone for $name { + #[inline] + fn clone(&self) -> $name { *self } + } + #[cfg(feature = "impl-default")] + impl Default for $name { + #[inline] + fn default() -> $name { unsafe { $crate::_core::mem::zeroed() } } + } + impl $name {$( + #[inline] + pub unsafe fn $variant(&self) -> &$ftype { + &*(self as *const _ as *const $ftype) + } + #[inline] + pub unsafe fn $variant_mut(&mut self) -> &mut $ftype { + &mut *(self as *mut _ as *mut $ftype) + } + )+} + ); + ($(#[$attrs:meta])* union $name:ident { + [$stype32:ty; $ssize32:expr] [$stype64:ty; $ssize64:expr], + $($variant:ident $variant_mut:ident: $ftype:ty,)+ + }) => ( + #[repr(C)] $(#[$attrs])* #[cfg(target_pointer_width = "32")] + pub struct $name([$stype32; $ssize32]); + #[repr(C)] $(#[$attrs])* #[cfg(target_pointer_width = "64")] + pub struct $name([$stype64; $ssize64]); + impl Copy for $name {} + impl Clone for $name { + #[inline] + fn clone(&self) -> $name { *self } + } + #[cfg(feature = "impl-default")] + impl Default for $name { + #[inline] + fn default() -> $name { unsafe { $crate::_core::mem::zeroed() } } + } + impl $name {$( + #[inline] + pub unsafe fn $variant(&self) -> &$ftype { + &*(self as *const _ as *const $ftype) + } + #[inline] + pub unsafe fn $variant_mut(&mut self) -> &mut $ftype { + &mut *(self as *mut _ as *mut $ftype) + } + )+} + ); +} + +macro_rules! BITFIELD { + ($base:ident $field:ident: $fieldtype:ty [ + $($thing:ident $set_thing:ident[$r:expr],)+ + ]) => { + impl $base {$( + #[inline] + pub fn $thing(&self) -> $fieldtype { + let size = core::mem::size_of::<$fieldtype>() * 8; + self.$field << (size - $r.end) >> (size - $r.end + $r.start) + } + #[inline] + pub fn $set_thing(&mut self, val: $fieldtype) { + let mask = ((1 << ($r.end - $r.start)) - 1) << $r.start; + self.$field &= !mask; + self.$field |= (val << $r.start) & mask; + } + )+} + } +} + +use winapi::shared::basetsd::{UINT8, ULONG64}; +use winapi::shared::guiddef::GUID; + +use crate::winapi_shared_ifdef::{ + IF_INDEX, IF_LUID, IF_OPER_STATUS, NET_IF_COMPARTMENT_ID, NET_IF_CONNECTION_TYPE, + NET_IF_NETWORK_GUID, TUNNEL_TYPE +}; +pub type IFTYPE = ULONG; //use winapi::shared::ipifcons::IFTYPE; +use winapi::shared::minwindef::{BOOL, BYTE, DWORD, UCHAR, UINT}; + +//use winapi::shared::nldef::{NL_DAD_STATE, NL_PREFIX_ORIGIN, NL_SUFFIX_ORIGIN}; +ENUM!{enum NL_DAD_STATE { + NldsInvalid, + NldsTentative, + NldsDuplicate, + NldsDeprecated, + NldsPreferred, + IpDadStateInvalid = 0, + IpDadStateTentative, + IpDadStateDuplicate, + IpDadStateDeprecated, + IpDadStatePreferred, +}} +ENUM!{enum NL_PREFIX_ORIGIN { + IpPrefixOriginOther = 0, + IpPrefixOriginManual, + IpPrefixOriginWellKnown, + IpPrefixOriginDhcp, + IpPrefixOriginRouterAdvertisement, + IpPrefixOriginUnchanged = 1 << 4, +}} +ENUM!{enum NL_SUFFIX_ORIGIN { + NlsoOther = 0, + NlsoManual, + NlsoWellKnown, + NlsoDhcp, + NlsoLinkLayerAddress, + NlsoRandom, + IpSuffixOriginOther = 0, + IpSuffixOriginManual, + IpSuffixOriginWellKnown, + IpSuffixOriginDhcp, + IpSuffixOriginLinkLayerAddress, + IpSuffixOriginRandom, + IpSuffixOriginUnchanged = 1 << 4, +}} + +use winapi::shared::ntdef::{CHAR, PCHAR, PWCHAR, ULONG, ULONGLONG, WCHAR}; +use winapi::shared::ws2def::SOCKET_ADDRESS; + +pub const MAX_ADAPTER_DESCRIPTION_LENGTH: usize = 128; +pub const MAX_ADAPTER_NAME_LENGTH: usize = 256; +pub const MAX_ADAPTER_ADDRESS_LENGTH: usize = 8; +pub const DEFAULT_MINIMUM_ENTITIES: usize = 32; +pub const MAX_HOSTNAME_LEN: usize = 128; +pub const MAX_DOMAIN_NAME_LEN: usize = 128; +pub const MAX_SCOPE_ID_LEN: usize = 256; +pub const MAX_DHCPV6_DUID_LENGTH: usize = 130; +pub const MAX_DNS_SUFFIX_STRING_LENGTH: usize = 256; +pub const BROADCAST_NODETYPE: usize = 1; +pub const PEER_TO_PEER_NODETYPE: usize = 2; +pub const MIXED_NODETYPE: usize = 4; +pub const HYBRID_NODETYPE: usize = 8; +STRUCT!{struct IP_ADDRESS_STRING { + String: [CHAR; 4*4], +}} +pub type PIP_ADDRESS_STRING = *mut IP_ADDRESS_STRING; +pub type IP_MASK_STRING = IP_ADDRESS_STRING; +pub type PIP_MASK_STRING = *mut IP_MASK_STRING; +STRUCT!{struct IP_ADDR_STRING { + Next: *mut IP_ADDR_STRING, + IpAddress: IP_ADDRESS_STRING, + IpMask: IP_MASK_STRING, + Context: DWORD, +}} +pub type PIP_ADDR_STRING = *mut IP_ADDR_STRING; +STRUCT!{struct IP_ADAPTER_INFO { + Next: *mut IP_ADAPTER_INFO, + ComboIndex: DWORD, + AdapterName: [CHAR; MAX_ADAPTER_NAME_LENGTH + 4], + Description: [CHAR; MAX_ADAPTER_DESCRIPTION_LENGTH + 4], + AddressLength: UINT, + Address: [BYTE; MAX_ADAPTER_ADDRESS_LENGTH], + Index: DWORD, + Type: UINT, + DhcpEnabled: UINT, + CurrentIpAddress: PIP_ADDR_STRING, + IpAddressList: IP_ADDR_STRING, + GatewayList: IP_ADDR_STRING, + DhcpServer: IP_ADDR_STRING, + HaveWins: BOOL, + PrimaryWinsServer: IP_ADDR_STRING, + SecondaryWinsServer: IP_ADDR_STRING, + LeaseObtained: time_t, + LeaseExpires: time_t, +}} +pub type PIP_ADAPTER_INFO = *mut IP_ADAPTER_INFO; +pub type IP_PREFIX_ORIGIN = NL_PREFIX_ORIGIN; +pub type IP_SUFFIX_ORIGIN = NL_SUFFIX_ORIGIN; +pub type IP_DAD_STATE = NL_DAD_STATE; +STRUCT!{struct IP_ADAPTER_UNICAST_ADDRESS_LH_u_s { + Length: ULONG, + Flags: DWORD, +}} +UNION!{union IP_ADAPTER_UNICAST_ADDRESS_LH_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_UNICAST_ADDRESS_LH_u_s, +}} +STRUCT!{struct IP_ADAPTER_UNICAST_ADDRESS_LH { + u: IP_ADAPTER_UNICAST_ADDRESS_LH_u, + Next: *mut IP_ADAPTER_UNICAST_ADDRESS_LH, + Address: SOCKET_ADDRESS, + PrefixOrigin: IP_PREFIX_ORIGIN, + SuffixOrigin: IP_SUFFIX_ORIGIN, + DadState: IP_DAD_STATE, + ValidLifetime: ULONG, + PreferredLifetime: ULONG, + LeaseLifetime: ULONG, + OnLinkPrefixLength: UINT8, +}} +pub type PIP_ADAPTER_UNICAST_ADDRESS_LH = *mut IP_ADAPTER_UNICAST_ADDRESS_LH; +STRUCT!{struct IP_ADAPTER_UNICAST_ADDRESS_XP_u_s { + Length: ULONG, + Flags: DWORD, +}} +UNION!{union IP_ADAPTER_UNICAST_ADDRESS_XP_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_UNICAST_ADDRESS_XP_u_s, +}} +STRUCT!{struct IP_ADAPTER_UNICAST_ADDRESS_XP { + u: IP_ADAPTER_UNICAST_ADDRESS_XP_u, + Next: *mut IP_ADAPTER_UNICAST_ADDRESS_XP, + Address: SOCKET_ADDRESS, + PrefixOrigin: IP_PREFIX_ORIGIN, + SuffixOrigin: IP_SUFFIX_ORIGIN, + DadState: IP_DAD_STATE, + ValidLifetime: ULONG, + PreferredLifetime: ULONG, + LeaseLifetime: ULONG, +}} +pub type PIP_ADAPTER_UNICAST_ADDRESS_XP = *mut IP_ADAPTER_UNICAST_ADDRESS_XP; +pub type IP_ADAPTER_UNICAST_ADDRESS = IP_ADAPTER_UNICAST_ADDRESS_LH; +// pub type IP_ADAPTER_UNICAST_ADDRESS = IP_ADAPTER_UNICAST_ADDRESS_XP; +pub type PIP_ADAPTER_UNICAST_ADDRESS = *mut IP_ADAPTER_UNICAST_ADDRESS; +pub const IP_ADAPTER_ADDRESS_DNS_ELIGIBLE: usize = 0x01; +pub const IP_ADAPTER_ADDRESS_TRANSIENT: usize = 0x02; +STRUCT!{struct IP_ADAPTER_ANYCAST_ADDRESS_XP_u_s { + Length: ULONG, + Flags: DWORD, +}} +UNION!{union IP_ADAPTER_ANYCAST_ADDRESS_XP_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_ANYCAST_ADDRESS_XP_u_s, +}} +STRUCT!{struct IP_ADAPTER_ANYCAST_ADDRESS_XP { + u: IP_ADAPTER_ANYCAST_ADDRESS_XP_u, + Next: *mut IP_ADAPTER_ANYCAST_ADDRESS_XP, + Address: SOCKET_ADDRESS, +}} +pub type PIP_ADAPTER_ANYCAST_ADDRESS_XP = *mut IP_ADAPTER_ANYCAST_ADDRESS_XP; +pub type IP_ADAPTER_ANYCAST_ADDRESS = IP_ADAPTER_ANYCAST_ADDRESS_XP; +pub type PIP_ADAPTER_ANYCAST_ADDRESS = *mut IP_ADAPTER_ANYCAST_ADDRESS; +STRUCT!{struct IP_ADAPTER_MULTICAST_ADDRESS_XP_u_s { + Length: ULONG, + Flags: DWORD, +}} +UNION!{union IP_ADAPTER_MULTICAST_ADDRESS_XP_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_MULTICAST_ADDRESS_XP_u_s, +}} +STRUCT!{struct IP_ADAPTER_MULTICAST_ADDRESS_XP { + u: IP_ADAPTER_MULTICAST_ADDRESS_XP_u, + Next: *mut IP_ADAPTER_MULTICAST_ADDRESS_XP, + Address: SOCKET_ADDRESS, +}} +pub type PIP_ADAPTER_MULTICAST_ADDRESS_XP = *mut IP_ADAPTER_MULTICAST_ADDRESS_XP; +pub type IP_ADAPTER_MULTICAST_ADDRESS = IP_ADAPTER_MULTICAST_ADDRESS_XP; +pub type PIP_ADAPTER_MULTICAST_ADDRESS = *mut IP_ADAPTER_MULTICAST_ADDRESS_XP; +STRUCT!{struct IP_ADAPTER_DNS_SERVER_ADDRESS_XP_u_s { + Length: ULONG, + Reserved: DWORD, +}} +UNION!{union IP_ADAPTER_DNS_SERVER_ADDRESS_XP_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_DNS_SERVER_ADDRESS_XP_u_s, +}} +STRUCT!{struct IP_ADAPTER_DNS_SERVER_ADDRESS_XP { + u: IP_ADAPTER_DNS_SERVER_ADDRESS_XP_u, + Next: *mut IP_ADAPTER_DNS_SERVER_ADDRESS_XP, + Address: SOCKET_ADDRESS, +}} +pub type PIP_ADAPTER_DNS_SERVER_ADDRESS_XP = *mut IP_ADAPTER_DNS_SERVER_ADDRESS_XP; +pub type IP_ADAPTER_DNS_SERVER_ADDRESS = IP_ADAPTER_DNS_SERVER_ADDRESS_XP; +pub type PIP_ADAPTER_DNS_SERVER_ADDRESS = *mut IP_ADAPTER_DNS_SERVER_ADDRESS_XP; +STRUCT!{struct IP_ADAPTER_WINS_SERVER_ADDRESS_LH_u_s { + Length: ULONG, + Reserved: DWORD, +}} +UNION!{union IP_ADAPTER_WINS_SERVER_ADDRESS_LH_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_WINS_SERVER_ADDRESS_LH_u_s, +}} +STRUCT!{struct IP_ADAPTER_WINS_SERVER_ADDRESS_LH { + u: IP_ADAPTER_WINS_SERVER_ADDRESS_LH_u, + Next: *mut IP_ADAPTER_WINS_SERVER_ADDRESS_LH, + Address: SOCKET_ADDRESS, +}} +pub type PIP_ADAPTER_WINS_SERVER_ADDRESS_LH = *mut IP_ADAPTER_WINS_SERVER_ADDRESS_LH; +pub type IP_ADAPTER_WINS_SERVER_ADDRESS = IP_ADAPTER_WINS_SERVER_ADDRESS_LH; +pub type PIP_ADAPTER_WINS_SERVER_ADDRESS = *mut IP_ADAPTER_WINS_SERVER_ADDRESS_LH; +STRUCT!{struct IP_ADAPTER_GATEWAY_ADDRESS_LH_u_s { + Length: ULONG, + Reserved: DWORD, +}} +UNION!{union IP_ADAPTER_GATEWAY_ADDRESS_LH_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_GATEWAY_ADDRESS_LH_u_s, +}} +STRUCT!{struct IP_ADAPTER_GATEWAY_ADDRESS_LH { + u: IP_ADAPTER_GATEWAY_ADDRESS_LH_u, + Next: *mut IP_ADAPTER_GATEWAY_ADDRESS_LH, + Address: SOCKET_ADDRESS, +}} +pub type PIP_ADAPTER_GATEWAY_ADDRESS_LH = *mut IP_ADAPTER_GATEWAY_ADDRESS_LH; +pub type IP_ADAPTER_GATEWAY_ADDRESS = IP_ADAPTER_GATEWAY_ADDRESS_LH; +pub type PIP_ADAPTER_GATEWAY_ADDRESS = *mut IP_ADAPTER_GATEWAY_ADDRESS_LH; +STRUCT!{struct IP_ADAPTER_PREFIX_XP_u_s { + Length: ULONG, + Flags: DWORD, +}} +UNION!{union IP_ADAPTER_PREFIX_XP_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_PREFIX_XP_u_s, +}} +STRUCT!{struct IP_ADAPTER_PREFIX_XP { + u: IP_ADAPTER_PREFIX_XP_u, + Next: *mut IP_ADAPTER_PREFIX_XP, + Address: SOCKET_ADDRESS, + PrefixLength: ULONG, +}} +pub type PIP_ADAPTER_PREFIX_XP = *mut IP_ADAPTER_PREFIX_XP; +pub type IP_ADAPTER_PREFIX = IP_ADAPTER_PREFIX_XP; +pub type PIP_ADAPTER_PREFIX = *mut IP_ADAPTER_PREFIX_XP; +STRUCT!{struct IP_ADAPTER_DNS_SUFFIX { + Next: *mut IP_ADAPTER_DNS_SUFFIX, + String: [WCHAR; MAX_DNS_SUFFIX_STRING_LENGTH], +}} +pub type PIP_ADAPTER_DNS_SUFFIX = *mut IP_ADAPTER_DNS_SUFFIX; +pub const IP_ADAPTER_DDNS_ENABLED: DWORD = 0x00000001; +pub const IP_ADAPTER_REGISTER_ADAPTER_SUFFIX: DWORD = 0x00000002; +pub const IP_ADAPTER_DHCP_ENABLED: DWORD = 0x00000004; +pub const IP_ADAPTER_RECEIVE_ONLY: DWORD = 0x00000008; +pub const IP_ADAPTER_NO_MULTICAST: DWORD = 0x00000010; +pub const IP_ADAPTER_IPV6_OTHER_STATEFUL_CONFIG: DWORD = 0x00000020; +pub const IP_ADAPTER_NETBIOS_OVER_TCPIP_ENABLED: DWORD = 0x00000040; +pub const IP_ADAPTER_IPV4_ENABLED: DWORD = 0x00000080; +pub const IP_ADAPTER_IPV6_ENABLED: DWORD = 0x00000100; +pub const IP_ADAPTER_IPV6_MANAGE_ADDRESS_CONFIG: DWORD = 0x00000200; +STRUCT!{struct IP_ADAPTER_ADDRESSES_LH_u_s { + Length: ULONG, + IfIndex: IF_INDEX, +}} +UNION!{union IP_ADAPTER_ADDRESSES_LH_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_ADDRESSES_LH_u_s, +}} +STRUCT!{struct IP_ADAPTER_ADDRESSES_LH { + u: IP_ADAPTER_ADDRESSES_LH_u, + Next: *mut IP_ADAPTER_ADDRESSES_LH, + AdapterName: PCHAR, + FirstUnicastAddress: PIP_ADAPTER_UNICAST_ADDRESS_LH, + FirstAnycastAddress: PIP_ADAPTER_ANYCAST_ADDRESS_XP, + FirstMulticastAddress: PIP_ADAPTER_MULTICAST_ADDRESS_XP, + FirstDnsServerAddress: PIP_ADAPTER_DNS_SERVER_ADDRESS_XP, + DnsSuffix: PWCHAR, + Description: PWCHAR, + FriendlyName: PWCHAR, + PhysicalAddress: [BYTE; MAX_ADAPTER_ADDRESS_LENGTH], + PhysicalAddressLength: ULONG, + Flags: ULONG, + Mtu: ULONG, + IfType: IFTYPE, + OperStatus: IF_OPER_STATUS, + Ipv6IfIndex: IF_INDEX, + ZoneIndices: [ULONG; 16], + FirstPrefix: PIP_ADAPTER_PREFIX_XP, + TransmitLinkSpeed: ULONG64, + ReceiveLinkSpeed: ULONG64, + FirstWinsServerAddress: PIP_ADAPTER_WINS_SERVER_ADDRESS_LH, + FirstGatewayAddress: PIP_ADAPTER_GATEWAY_ADDRESS_LH, + Ipv4Metric: ULONG, + Ipv6Metric: ULONG, + Luid: IF_LUID, + Dhcpv4Server: SOCKET_ADDRESS, + CompartmentId: NET_IF_COMPARTMENT_ID, + NetworkGuid: NET_IF_NETWORK_GUID, + ConnectionType: NET_IF_CONNECTION_TYPE, + TunnelType: TUNNEL_TYPE, + Dhcpv6Server: SOCKET_ADDRESS, + Dhcpv6ClientDuid: [BYTE; MAX_DHCPV6_DUID_LENGTH], + Dhcpv6ClientDuidLength: ULONG, + Dhcpv6Iaid: ULONG, + FirstDnsSuffix: PIP_ADAPTER_DNS_SUFFIX, +}} +BITFIELD!{IP_ADAPTER_ADDRESSES_LH Flags: ULONG [ + DdnsEnabled set_DdnsEnabled[0..1], + RegisterAdapterSuffix set_RegisterAdapterSuffix[1..2], + Dhcpv4Enabled set_Dhcpv4Enabled[2..3], + ReceiveOnly set_ReceiveOnly[3..4], + NoMulticast set_NoMulticast[4..5], + Ipv6OtherStatefulConfig set_Ipv6OtherStatefulConfig[5..6], + NetbiosOverTcpipEnabled set_NetbiosOverTcpipEnabled[6..7], + Ipv4Enabled set_Ipv4Enabled[7..8], + Ipv6Enabled set_Ipv6Enabled[8..9], + Ipv6ManagedAddressConfigurationSupported set_Ipv6ManagedAddressConfigurationSupported[9..10], +]} +pub type PIP_ADAPTER_ADDRESSES_LH = *mut IP_ADAPTER_ADDRESSES_LH; +STRUCT!{struct IP_ADAPTER_ADDRESSES_XP_u_s { + Length: ULONG, + IfIndex: DWORD, +}} +UNION!{union IP_ADAPTER_ADDRESSES_XP_u { + [u64; 1], + Alignment Alignment_mut: ULONGLONG, + s s_mut: IP_ADAPTER_ADDRESSES_XP_u_s, +}} +STRUCT!{struct IP_ADAPTER_ADDRESSES_XP { + u: IP_ADAPTER_ADDRESSES_XP_u, + Next: *mut IP_ADAPTER_ADDRESSES_XP, + AdapterName: PCHAR, + FirstUnicastAddress: PIP_ADAPTER_UNICAST_ADDRESS_XP, + FirstAnycastAddress: PIP_ADAPTER_ANYCAST_ADDRESS_XP, + FirstMulticastAddress: PIP_ADAPTER_MULTICAST_ADDRESS_XP, + FirstDnsServerAddress: PIP_ADAPTER_DNS_SERVER_ADDRESS_XP, + DnsSuffix: PWCHAR, + Description: PWCHAR, + FriendlyName: PWCHAR, + PhysicalAddress: [BYTE; MAX_ADAPTER_ADDRESS_LENGTH], + PhysicalAddressLength: DWORD, + Flags: DWORD, + Mtu: DWORD, + IfType: DWORD, + OperStatus: IF_OPER_STATUS, + Ipv6IfIndex: DWORD, + ZoneIndices: [DWORD; 16], + FirstPrefix: PIP_ADAPTER_PREFIX_XP, +}} +pub type PIP_ADAPTER_ADDRESSES_XP = *mut IP_ADAPTER_ADDRESSES_XP; +pub type IP_ADAPTER_ADDRESSES = IP_ADAPTER_ADDRESSES_LH; +// pub type IP_ADAPTER_ADDRESSES = IP_ADAPTER_ADDRESSES_XP; +pub type PIP_ADAPTER_ADDRESSES = *mut IP_ADAPTER_ADDRESSES; +pub const GAA_FLAG_SKIP_UNICAST: ULONG = 0x0001; +pub const GAA_FLAG_SKIP_ANYCAST: ULONG = 0x0002; +pub const GAA_FLAG_SKIP_MULTICAST: ULONG = 0x0004; +pub const GAA_FLAG_SKIP_DNS_SERVER: ULONG = 0x0008; +pub const GAA_FLAG_INCLUDE_PREFIX: ULONG = 0x0010; +pub const GAA_FLAG_SKIP_FRIENDLY_NAME: ULONG = 0x0020; +pub const GAA_FLAG_INCLUDE_WINS_INFO: ULONG = 0x0040; +pub const GAA_FLAG_INCLUDE_GATEWAYS: ULONG = 0x0080; +pub const GAA_FLAG_INCLUDE_ALL_INTERFACES: ULONG = 0x0100; +pub const GAA_FLAG_INCLUDE_ALL_COMPARTMENTS: ULONG = 0x0200; +pub const GAA_FLAG_INCLUDE_TUNNEL_BINDINGORDER: ULONG = 0x0400; +STRUCT!{struct IP_PER_ADAPTER_INFO_W2KSP1 { + AutoconfigEnabled: UINT, + AutoconfigActive: UINT, + CurrentDnsServer: PIP_ADDR_STRING, + DnsServerList: IP_ADDR_STRING, +}} +pub type PIP_PER_ADAPTER_INFO_W2KSP1 = *mut IP_PER_ADAPTER_INFO_W2KSP1; +pub type IP_PER_ADAPTER_INFO = IP_PER_ADAPTER_INFO_W2KSP1; +pub type PIP_PER_ADAPTER_INFO = *mut IP_PER_ADAPTER_INFO; +STRUCT!{struct FIXED_INFO_W2KSP1 { + HostName: [CHAR; MAX_HOSTNAME_LEN + 4], + DomainName: [CHAR; MAX_DOMAIN_NAME_LEN + 4], + CurrentDnsServer: PIP_ADDR_STRING, + DnsServerList: IP_ADDR_STRING, + NodeType: UINT, + ScopeId: [CHAR; MAX_SCOPE_ID_LEN + 4], + EnableRouting: UINT, + EnableProxy: UINT, + EnableDns: UINT, +}} +pub type PFIXED_INFO_W2KSP1 = *mut FIXED_INFO_W2KSP1; +pub type FIXED_INFO = FIXED_INFO_W2KSP1; +pub type PFIXED_INFO = *mut FIXED_INFO; +STRUCT!{struct IP_INTERFACE_NAME_INFO_W2KSP1 { + Index: ULONG, + MediaType: ULONG, + ConnectionType: UCHAR, + AccessType: UCHAR, + DeviceGuid: GUID, + InterfaceGuid: GUID, +}} +pub type PIP_INTERFACE_NAME_INFO_W2KSP1 = *mut IP_INTERFACE_NAME_INFO_W2KSP1; +pub type IP_INTERFACE_NAME_INFO = IP_INTERFACE_NAME_INFO_W2KSP1; +pub type PIP_INTERFACE_NAME_INFO = *mut IP_INTERFACE_NAME_INFO; \ No newline at end of file diff --git a/Other/pcap2socks/crate/vendor/netifs/src/windows.rs b/Other/pcap2socks/crate/vendor/netifs/src/windows.rs new file mode 100644 index 0000000..c25aecc --- /dev/null +++ b/Other/pcap2socks/crate/vendor/netifs/src/windows.rs @@ -0,0 +1,109 @@ +use std::net::{IpAddr, Ipv4Addr, Ipv6Addr}; +use eui48::MacAddress; +use ipnetwork::IpNetwork; + +use winapi::shared::winerror::*; +use winapi::shared::ntdef::{ULONG, PVOID}; +use winapi::shared::ws2def::{AF_INET, AF_INET6, SOCKADDR_IN}; +use winapi::shared::ws2ipdef::SOCKADDR_IN6_LH; +use crate::winapi_um_iptypes::*; // TODO replace with upstream winapi once released. +use crate::winapi_shared_ifdef::IfOperStatusUp; // TODO replace with upstream winapi once released. + +use widestring::U16CString; + +use crate::{Interface, cstr_to_string}; + +#[link(name = "IPHLPAPI")] +extern { + fn GetAdaptersAddresses(family: ULONG, flags: ULONG, reserved: PVOID, buffer: *const u8, size: *mut ULONG) -> ULONG; +} + +pub fn get_interfaces() -> Result, String> { + unsafe { + let mut size: ULONG = 1024; + let mut buffer = Vec::with_capacity(size as usize); + + let sizeptr: *mut ULONG = &mut size; + let mut res = GetAdaptersAddresses(0, 0, 0 as PVOID, buffer.as_mut_ptr(), sizeptr); + + // Since we are providing the buffer, it might be too small. Check for overflow + // and try again with the required buffer size. There is a chance for a race + // condition here if an interface is added between the two calls - however + // looping potentially forever seems more dangerous. + if res == ERROR_BUFFER_OVERFLOW { + buffer.reserve(size as usize - buffer.len()); + res = GetAdaptersAddresses(0, 0, 0 as PVOID, buffer.as_mut_ptr(), sizeptr); + } + + if res != ERROR_SUCCESS { + return Err(format!("GetAdaptersAddresses failed: {}", res)); + } + + let mut res = Vec::new(); + let mut adapterptr = buffer.as_ptr() as PIP_ADAPTER_ADDRESSES ; + while !adapterptr.is_null() { + let a = *adapterptr; + + let name = cstr_to_string(a.AdapterName); + let mut interface = Interface::new(name); + interface.display_name = U16CString::from_ptr_str(a.Description).to_string_lossy(); + if a.IfType == 24 { + interface.is_loopback = true; + } + if a.OperStatus == IfOperStatusUp { + interface.is_up = true; + } + interface.mtu = a.Mtu as usize; + + if a.PhysicalAddressLength == 0 { + // 0 indicates no MAC address, eg. on the loopback + } else if a.PhysicalAddressLength != 6 { + eprintln!("Interface '{}' has an unexpected address length: {}", + &interface.name, a.PhysicalAddressLength); + } else { + interface.mac_address = match MacAddress::from_bytes(&a.PhysicalAddress[..6]) { + Ok(m) => Some(m), + Err(()) => { + eprintln!("Unable to parse mac address for interface: {}", &interface.name); + None + } + }; + } + + let mut current = a.FirstUnicastAddress; + while !current.is_null() { + let addr = *current; + match (*addr.Address.lpSockaddr).sa_family as i32 { + AF_INET => { + let sin = *(addr.Address.lpSockaddr as *const SOCKADDR_IN); + let ip = IpAddr::V4(Ipv4Addr::from(u32::from_be(*sin.sin_addr.S_un.S_addr()))); + match IpNetwork::new(ip, addr.OnLinkPrefixLength) { + Ok(ipn) => interface.ip_addresses.push(ipn), + Err(e) => return Err(format!("Unable to assemble IpNetwork: {}", e)) + } + }, + AF_INET6 => { + let sin6 = *(addr.Address.lpSockaddr as *const SOCKADDR_IN6_LH); + let ip = IpAddr::V6(Ipv6Addr::from(*sin6.sin6_addr.u.Byte())); + match IpNetwork::new(ip, addr.OnLinkPrefixLength) { + Ok(ipn) => interface.ip_addresses.push(ipn), + Err(e) => return Err(format!("Unable to assemble IpNetwork: {}", e)) + } + }, + x => { + eprintln!("Unknown sa_family: {}", x); + } + } + + assert_ne!(current, addr.Next); + current = addr.Next; + } + + res.push(interface); + assert_ne!(adapterptr, a.Next); + adapterptr = a.Next; + } + + Ok(res) + } +} diff --git a/Other/tun2socks/RECOVERY.md b/Other/tun2socks/RECOVERY.md new file mode 100644 index 0000000..47928f9 --- /dev/null +++ b/Other/tun2socks/RECOVERY.md @@ -0,0 +1,76 @@ +# tun2socks (rebuilt from `Storage/tun2socks.bin`) + +`Storage/tun2socks.bin` is a closed-source DLL that Netrix loads for TUN mode. Its source is gone, so this directory is a +**rewrite recovered from the binary** (Ghidra decompilation plus the Go function tables). It builds, passes its tests and +matches the original function for function, but it has **not** been run inside Netrix (that needs admin and `wintun.dll`). + +## What the binary is + +Not upstream `xjasonlyu/tun2socks`. It is a Windows DLL (`-buildmode=c-shared`, x64) built with go1.17.1 from the private +module `rixcloud.moe/aiocloud/tun2socks` (AioCloud). The module host and `github.com/aiocloud/shadowsocks` no longer +resolve anywhere. `go version -m` shows the build info the rewrite pins: + +| Dependency | Version | +| --- | --- | +| github.com/miekg/dns | v1.1.43 | +| github.com/yl2chen/cidranger | v1.0.2 | +| golang.org/x/sys | v0.0.0-20210917161153-d61c044b1678 | +| golang.zx2c4.com/wireguard | v0.0.0-20210905140043-2ef39d47540c | +| github.com/aiocloud/shadowsocks (socks addr helpers) | replaced by `github.com/shadowsocks/go-shadowsocks2` v0.1.5 `socks` (same helpers) | + +## Layout + +| Path | Origin | +| --- | --- | +| `main.go` | Recovered. The C ABI Netrix calls (`tun_dial`, `tun_init`, `tun_free`, `tun_luid`, `tun_getUP`, `tun_getDL`). | +| `proxies/` | Recovered. TCP: IPv4 targets in the bypass list are dialed directly from the bind address, everything else goes through SOCKS5. UDP: port 53 goes to `adns`. | +| `proxies/socks/` | Recovered. SOCKS5 CONNECT and UDP ASSOCIATE. | +| `adns/` | Recovered. PTR queries are answered with `aioCloud`, other queries go to the configured DNS server over TCP or TCP-TLS. | +| `tools/`, `structs/` | Recovered. | +| `core/` | `github.com/eycorsican/go-tun2socks/core` (MIT, license in `core/LICENSE`) with lwIP, **plus one fix**: `lwipError.Error()` formats the code with `fmt.Sprintf("error code %d", ...)` as the binary does (upstream uses `string(int)`). Every other `core` function matches the binary's size. | +| `recovered/decompiled/` | Raw Ghidra pseudo-C that the rewrite was written from. Evidence only, not built. | + +Recovered defaults (from the data section): bind address `10.0.0.100`, bypass list `disabled`, DNS `1.1.1.1:53` over `tcp`, MTU 1500. +Other constants: wintun adapter `aioCloud` with GUID `{14EA48E9-69FA-409F-8752-22563978E802}`; direct dials time out and +keep alive after 10 s; SOCKS UDP relay replies are dropped after 30 s of silence; relays copy in 0x578 byte chunks. +Only SOCKS5 server types (`S5`, `Socks`, `Socks5`) are supported. + +## How it was checked + +Built with the same toolchain and flags as the original (`go1.17.1`, `-buildmode=c-shared -trimpath -asmflags '-s -w' +-ldflags '-s -w'`, mingw gcc 15.2 for the lwIP C code): + +``` +go install golang.org/dl/go1.17.1@latest && go1.17.1 download +set CGO_ENABLED=1 GOOS=windows GOARCH=amd64 +go1.17.1 build -a -buildmode=c-shared -trimpath -asmflags "-s -w" -ldflags "-s -w" -o tun2socks.dll . +``` + +| Check | Result | +| --- | --- | +| DLL size | 4,680,192 bytes (original 4,676,608) | +| Exports | the same six `tun_*` functions, same C types (`GoInt`, `GoUint8*`, `GoUint8`, `GoUint64`) | +| Functions in the Go function table | 4,547 in common; **4,541 have exactly the same machine code size** | +| Functions that differ | `main.tun_dial`, `main.tun_init`, `main.tun_free` (written more compactly), `adns.Handle` (shared helper instead of duplicated code), `socks.(*tcpHandler).Handle`, `socks.(*udpHandler).Connect` (a few bytes; logic reviewed against the decompile) | +| C ABI | A ctypes script calls every export on both DLLs with the same sequence (dial with every field, unknown index, getters, free before init, init without wintun). The outputs are identical. | +| Unit tests | Go tests with fake SOCKS5 servers and a fake DNS upstream: handshake (no auth, user/pass, auth failure, unknown method), TCP relay, UDP associate round trip, bypass versus proxy routing, IPv6 never bypassed, PTR answer, upstream DNS over TCP | + +## Not verified + +- `tun_init` with a real adapter (needs administrator rights and `wintun.dll`), so no traffic has gone through the rewrite. +- The six functions listed above differ in machine code. Behaviour was compared by reading the decompile and by tests, not by running the + original side by side. +- Differences from the original that are deliberate: `tun_dial` returns false for a server field set before a `TYPE_TCPREST`/`TYPE_UDPREST` + (the original would crash with a nil pointer), and `tun_init` returns false if the servers were never described. +- The `aiocloud/shadowsocks/socks` helpers were replaced by the go-shadowsocks2 equivalents; same wire format, not compared byte for byte. +- The exact text of three rarely seen log lines was taken from the data section; the SOCKS auth failure message is `authentication failed`. + +**Wired in:** `Other/tun2socks/build.ps1` builds the module with Go 1.17.1 into `Other\release\tun2socks.bin`. `Other/build.ps1` runs it with the other `Other/*` tools, and the root `build.ps1` copies `Other\release\*.bin` over the `Storage\tun2socks.bin` it copied first, so the release now ships the rebuilt DLL. CI installs Go 1.17.1 for it (`GO117`). `Storage/tun2socks.bin` stays as the original reference and as a fallback when `Other\release` has no `tun2socks.bin`. To go back to the original, delete `Other/tun2socks/build.ps1`. + +## `Storage/nfdriver.sys` (not recovered, on purpose) + +It is the **NetFilter SDK 2 v1.6 WFP driver** by Vitaly Sidorov (PDB path `...\nfsdk2_1.6\driver_wfp\...\netfilter2.pdb`, x64, +file version 1.6.3.0), a commercial closed-source product. The headers in `Redirector/include/` carry "Copyright (C) Vitaly Sidorov, +All rights reserved". Its source is not available and I did not reconstruct it. The user-mode interface Netrix needs is already +documented by the vendored `nfdriver.h` and `nfapi.h`. Realistic ways forward: license the SDK, or replace Process mode with another +capture mechanism (for example WinDivert or your own WFP callout driver). diff --git a/Other/tun2socks/adns/adns.go b/Other/tun2socks/adns/adns.go new file mode 100644 index 0000000..063d507 --- /dev/null +++ b/Other/tun2socks/adns/adns.go @@ -0,0 +1,62 @@ +package adns + +import ( + "fmt" + "log" + "net" + + "github.com/miekg/dns" + + "rixcloud.moe/aiocloud/tun2socks/core" +) + +var ( + // Client talks to Address; main sets Client.Net to "tcp" or "tcp-tls". + Client = dns.Client{Net: "tcp"} + + // Address is the upstream DNS server, "host:port". + Address = "1.1.1.1:53" +) + +// Handle answers one DNS query that arrived on UDP port 53: PTR questions get a fixed +// "aioCloud" answer, everything else is forwarded to Address over Client.Net. +func Handle(conn core.UDPConn, data []byte, addr *net.UDPAddr) { + var request dns.Msg + if err := request.Unpack(data); err != nil { + log.Printf("[tun2socks][adns] Failed to unpack data: %v", err) + return + } + + if len(request.Question) == 1 && request.Question[0].Qtype == dns.TypePTR { + rr, err := dns.NewRR(fmt.Sprintf("%s PTR aioCloud", request.Question[0].Name)) + if err != nil { + log.Printf("[tun2socks][adns] NewRR failed: %v", err) + return + } + + var reply dns.Msg + reply.SetReply(&request) + reply.Answer = append(reply.Answer, rr) + + respond(conn, &reply, addr) + return + } + + reply, err := exchange(&Client, &request, Address) + if err != nil { + log.Printf("[tun2socks][adns] DNS resolution failed: %v", err) + return + } + + respond(conn, reply, addr) +} + +func respond(conn core.UDPConn, reply *dns.Msg, addr *net.UDPAddr) { + packed, err := reply.Pack() + if err != nil { + log.Printf("[tun2socks][adns] Failed to pack data: %v", err) + return + } + + conn.WriteFrom(packed, addr) +} diff --git a/Other/tun2socks/adns/adns_test.go b/Other/tun2socks/adns/adns_test.go new file mode 100644 index 0000000..be1dc19 --- /dev/null +++ b/Other/tun2socks/adns/adns_test.go @@ -0,0 +1,99 @@ +package adns + +import ( + "net" + "testing" + + "github.com/miekg/dns" +) + +type fakeUDPConn struct { + written []byte + to *net.UDPAddr +} + +func (f *fakeUDPConn) LocalAddr() *net.UDPAddr { return nil } +func (f *fakeUDPConn) ReceiveTo(data []byte, addr *net.UDPAddr) error { return nil } +func (f *fakeUDPConn) Close() error { return nil } +func (f *fakeUDPConn) WriteFrom(data []byte, addr *net.UDPAddr) (int, error) { + f.written, f.to = data, addr + return len(data), nil +} + +func TestPTRQueryAnsweredLocally(t *testing.T) { + query := new(dns.Msg) + query.SetQuestion("4.3.2.1.in-addr.arpa.", dns.TypePTR) + query.Id = 0x1234 + data, _ := query.Pack() + + conn := &fakeUDPConn{} + from := &net.UDPAddr{IP: net.ParseIP("1.1.1.1"), Port: 53} + Handle(conn, data, from) + + var reply dns.Msg + if err := reply.Unpack(conn.written); err != nil { + t.Fatal(err) + } + if !reply.Response || reply.Id != 0x1234 || reply.Rcode != dns.RcodeSuccess { + t.Fatalf("bad header: %+v", reply.MsgHdr) + } + if len(reply.Answer) != 1 { + t.Fatalf("answers: %v", reply.Answer) + } + ptr, ok := reply.Answer[0].(*dns.PTR) + if !ok || ptr.Ptr != "aioCloud." { + t.Fatalf("answer: %v", reply.Answer[0]) + } + if conn.to != from { + t.Fatal("reply not addressed to the query's destination") + } +} + +func TestGarbageIsDropped(t *testing.T) { + conn := &fakeUDPConn{} + Handle(conn, []byte{1, 2, 3}, &net.UDPAddr{}) + if conn.written != nil { + t.Fatal("nothing should be written for an undecodable query") + } +} + +func TestOtherQueriesGoUpstreamOverTCP(t *testing.T) { + // upstream DNS over TCP that always answers 9.9.9.9 + l, err := net.Listen("tcp", "127.0.0.1:0") + if err != nil { + t.Fatal(err) + } + defer l.Close() + + srv := &dns.Server{Listener: l, Handler: dns.HandlerFunc(func(w dns.ResponseWriter, r *dns.Msg) { + m := new(dns.Msg) + m.SetReply(r) + rr, _ := dns.NewRR(r.Question[0].Name + " 60 IN A 9.9.9.9") + m.Answer = append(m.Answer, rr) + w.WriteMsg(m) + })} + started := make(chan struct{}) + srv.NotifyStartedFunc = func() { close(started) } + go srv.ActivateAndServe() + <-started + defer srv.Shutdown() + + old := Address + Address = l.Addr().String() + defer func() { Address = old }() + + query := new(dns.Msg) + query.SetQuestion("example.com.", dns.TypeA) + data, _ := query.Pack() + + conn := &fakeUDPConn{} + Handle(conn, data, &net.UDPAddr{}) + + var reply dns.Msg + if err := reply.Unpack(conn.written); err != nil { + t.Fatal(err) + } + if a, ok := reply.Answer[0].(*dns.A); !ok || a.A.String() != "9.9.9.9" { + t.Fatalf("answer: %v", reply.Answer) + } +} diff --git a/Other/tun2socks/adns/cache.go b/Other/tun2socks/adns/cache.go new file mode 100644 index 0000000..a43ed8a --- /dev/null +++ b/Other/tun2socks/adns/cache.go @@ -0,0 +1,73 @@ +package adns + +import ( + "fmt" + "strings" + "sync" + "time" + + "github.com/miekg/dns" +) + +const ( + maxCacheTTL = 60 * time.Second + maxCacheEntries = 4096 +) + +type cacheEntry struct { + msg *dns.Msg + exp time.Time +} + +var ( + cacheMu sync.Mutex + cache = map[string]cacheEntry{} +) + +// exchange is Client.Exchange with a response cache: each upstream query opens a new TCP/TLS +// connection, so repeats are worth answering locally. Only NOERROR answers are cached, for +// min(record TTLs, 60 s). ponytail: TTLs in cached replies are not decremented; full map flush at +// maxCacheEntries; add per-entry eviction or TTL aging if it matters. +func exchange(c *dns.Client, m *dns.Msg, addr string) (*dns.Msg, error) { + if len(m.Question) != 1 { + r, _, err := c.Exchange(m, addr) + return r, err + } + + q := m.Question[0] + do := false + if o := m.IsEdns0(); o != nil { + do = o.Do() + } + key := fmt.Sprintf("%s|%s|%d|%d|%t", addr, strings.ToLower(q.Name), q.Qtype, q.Qclass, do) + + cacheMu.Lock() + e, ok := cache[key] + cacheMu.Unlock() + if ok && time.Now().Before(e.exp) { + r := e.msg.Copy() + r.Id = m.Id + return r, nil + } + + r, _, err := c.Exchange(m, addr) + if err != nil || r.Rcode != dns.RcodeSuccess || len(r.Answer) == 0 || r.Truncated { + return r, err + } + + ttl := maxCacheTTL + for _, rr := range r.Answer { + if t := time.Duration(rr.Header().Ttl) * time.Second; t < ttl { + ttl = t + } + } + if ttl > 0 { + cacheMu.Lock() + if len(cache) >= maxCacheEntries { + cache = map[string]cacheEntry{} + } + cache[key] = cacheEntry{r.Copy(), time.Now().Add(ttl)} + cacheMu.Unlock() + } + return r, nil +} diff --git a/Other/tun2socks/build.ps1 b/Other/tun2socks/build.ps1 new file mode 100644 index 0000000..604c33f --- /dev/null +++ b/Other/tun2socks/build.ps1 @@ -0,0 +1,12 @@ +Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) + +# ponytail: the original tun2socks.bin was built with go1.17.1; CI installs it and exports GO117 (its GOROOT) +$go = if ( $Env:GO117 ) { Join-Path $Env:GO117 'bin\go.exe' } else { 'go' } + +$Env:CGO_ENABLED='1' +$Env:GOROOT_FINAL='/usr' + +$Env:GOOS='windows' +$Env:GOARCH='amd64' +& $go build -a -buildmode=c-shared -trimpath -asmflags '-s -w' -ldflags '-s -w' -o '..\release\tun2socks.bin' +exit $lastExitCode diff --git a/Other/tun2socks/core/LICENSE b/Other/tun2socks/core/LICENSE new file mode 100644 index 0000000..3cc95f2 --- /dev/null +++ b/Other/tun2socks/core/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2018 eycorsican + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/Other/tun2socks/core/addr.go b/Other/tun2socks/core/addr.go new file mode 100644 index 0000000..436c04d --- /dev/null +++ b/Other/tun2socks/core/addr.go @@ -0,0 +1,46 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/tcp.h" +#include +*/ +import "C" +import ( + "errors" + "net" + "strconv" + "unsafe" +) + +// ipaddr_ntoa() is using a global static buffer to return result, +// reentrants are not allowed, caller is required to lock lwipMutex. +func ipAddrNTOA(ipaddr C.struct_ip_addr) string { + return C.GoString(C.ipaddr_ntoa(&ipaddr)) +} + +func ipAddrATON(cp string, addr *C.struct_ip_addr) error { + ccp := C.CString(cp) + defer C.free(unsafe.Pointer(ccp)) + if r := C.ipaddr_aton(ccp, addr); r == 0 { + return errors.New("failed to convert IP address") + } else { + return nil + } +} + +func ParseTCPAddr(addr string, port uint16) *net.TCPAddr { + netAddr, err := net.ResolveTCPAddr("tcp", net.JoinHostPort(addr, strconv.Itoa(int(port)))) + if err != nil { + return nil + } + return netAddr +} + +func ParseUDPAddr(addr string, port uint16) *net.UDPAddr { + netAddr, err := net.ResolveUDPAddr("udp", net.JoinHostPort(addr, strconv.Itoa(int(port)))) + if err != nil { + return nil + } + return netAddr +} diff --git a/Other/tun2socks/core/buffer_pool.go b/Other/tun2socks/core/buffer_pool.go new file mode 100644 index 0000000..e60371a --- /dev/null +++ b/Other/tun2socks/core/buffer_pool.go @@ -0,0 +1,35 @@ +package core + +import ( + "sync" +) + +var pool *sync.Pool + +const BufSize = 2 * 1024 + +func SetBufferPool(p *sync.Pool) { + pool = p +} + +func NewBytes(size int) []byte { + if size <= BufSize { + return pool.Get().([]byte) + } else { + return make([]byte, size) + } +} + +func FreeBytes(b []byte) { + if len(b) >= BufSize { + pool.Put(b) + } +} + +func init() { + SetBufferPool(&sync.Pool{ + New: func() interface{} { + return make([]byte, BufSize) + }, + }) +} diff --git a/Other/tun2socks/core/c/core/altcp.c b/Other/tun2socks/core/c/core/altcp.c new file mode 100644 index 0000000..d46d6cd --- /dev/null +++ b/Other/tun2socks/core/c/core/altcp.c @@ -0,0 +1,681 @@ +/** + * @file + * @defgroup altcp Application layered TCP Functions + * @ingroup altcp_api + * + * This file contains the common functions for altcp to work. + * For more details see @ref altcp_api. + */ + +/** + * @defgroup altcp_api Application layered TCP Introduction + * @ingroup callbackstyle_api + * + * Overview + * -------- + * altcp (application layered TCP connection API; to be used from TCPIP thread) + * is an abstraction layer that prevents applications linking hard against the + * @ref tcp.h functions while providing the same functionality. It is used to + * e.g. add SSL/TLS (see LWIP_ALTCP_TLS) or proxy-connect support to an application + * written for the tcp callback API without that application knowing the + * protocol details. + * + * * This interface mimics the tcp callback API to the application while preventing + * direct linking (much like virtual functions). + * * This way, an application can make use of other application layer protocols + * on top of TCP without knowing the details (e.g. TLS, proxy connection). + * * This is achieved by simply including "lwip/altcp.h" instead of "lwip/tcp.h", + * replacing "struct tcp_pcb" with "struct altcp_pcb" and prefixing all functions + * with "altcp_" instead of "tcp_". + * + * With altcp support disabled (LWIP_ALTCP==0), applications written against the + * altcp API can still be compiled but are directly linked against the tcp.h + * callback API and then cannot use layered protocols. To minimize code changes + * in this case, the use of altcp_allocators is strongly suggested. + * + * Usage + * ----- + * To make use of this API from an existing tcp raw API application: + * * Include "lwip/altcp.h" instead of "lwip/tcp.h" + * * Replace "struct tcp_pcb" with "struct altcp_pcb" + * * Prefix all called tcp API functions with "altcp_" instead of "tcp_" to link + * against the altcp functions + * * @ref altcp_new (and @ref altcp_new_ip_type/@ref altcp_new_ip6) take + * an @ref altcp_allocator_t as an argument, whereas the original tcp API + * functions take no arguments. + * * An @ref altcp_allocator_t allocator is an object that holds a pointer to an + * allocator object and a corresponding state (e.g. for TLS, the corresponding + * state may hold certificates or keys). This way, the application does not + * even need to know if it uses TLS or pure TCP, this is handled at runtime + * by passing a specific allocator. + * * An application can alternatively bind hard to the altcp_tls API by calling + * @ref altcp_tls_new or @ref altcp_tls_wrap. + * * The TLS layer is not directly implemented by lwIP, but a port to mbedTLS is + * provided. + * * Another altcp layer is proxy-connect to use TLS behind a HTTP proxy (see + * @ref altcp_proxyconnect.h) + * + * altcp_allocator_t + * ----------------- + * An altcp allocator is created by the application by combining an allocator + * callback function and a corresponding state, e.g.:\code{.c} + * static const unsigned char cert[] = {0x2D, ... (see mbedTLS doc for how to create this)}; + * struct altcp_tls_config * conf = altcp_tls_create_config_client(cert, sizeof(cert)); + * altcp_allocator_t tls_allocator = { + * altcp_tls_alloc, conf + * }; + * \endcode + * + * + * struct altcp_tls_config + * ----------------------- + * The struct altcp_tls_config holds state that is needed to create new TLS client + * or server connections (e.g. certificates and private keys). + * + * It is not defined by lwIP itself but by the TLS port (e.g. altcp_tls to mbedTLS + * adaption). However, the parameters used to create it are defined in @ref + * altcp_tls.h (see @ref altcp_tls_create_config_server_privkey_cert for servers + * and @ref altcp_tls_create_config_client/@ref altcp_tls_create_config_client_2wayauth + * for clients). + * + * For mbedTLS, ensure that certificates can be parsed by 'mbedtls_x509_crt_parse()' and + * private keys can be parsed by 'mbedtls_pk_parse_key()'. + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ + +#include "lwip/opt.h" + +#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/altcp.h" +#include "lwip/priv/altcp_priv.h" +#include "lwip/altcp_tcp.h" +#include "lwip/tcp.h" +#include "lwip/mem.h" + +#include + +extern const struct altcp_functions altcp_tcp_functions; + +/** + * For altcp layer implementations only: allocate a new struct altcp_pcb from the pool + * and zero the memory + */ +struct altcp_pcb * +altcp_alloc(void) +{ + struct altcp_pcb *ret = (struct altcp_pcb *)memp_malloc(MEMP_ALTCP_PCB); + if (ret != NULL) { + memset(ret, 0, sizeof(struct altcp_pcb)); + } + return ret; +} + +/** + * For altcp layer implementations only: return a struct altcp_pcb to the pool + */ +void +altcp_free(struct altcp_pcb *conn) +{ + if (conn) { + if (conn->fns && conn->fns->dealloc) { + conn->fns->dealloc(conn); + } + memp_free(MEMP_ALTCP_PCB, conn); + } +} + +/** + * @ingroup altcp + * altcp_new_ip6: @ref altcp_new for IPv6 + */ +struct altcp_pcb * +altcp_new_ip6(altcp_allocator_t *allocator) +{ + return altcp_new_ip_type(allocator, IPADDR_TYPE_V6); +} + +/** + * @ingroup altcp + * altcp_new: @ref altcp_new for IPv4 + */ +struct altcp_pcb * +altcp_new(altcp_allocator_t *allocator) +{ + return altcp_new_ip_type(allocator, IPADDR_TYPE_V4); +} + +/** + * @ingroup altcp + * altcp_new_ip_type: called by applications to allocate a new pcb with the help of an + * allocator function. + * + * @param allocator allocator function and argument + * @param ip_type IP version of the pcb (@ref lwip_ip_addr_type) + * @return a new altcp_pcb or NULL on error + */ +struct altcp_pcb * +altcp_new_ip_type(altcp_allocator_t *allocator, u8_t ip_type) +{ + struct altcp_pcb *conn; + if (allocator == NULL) { + /* no allocator given, create a simple TCP connection */ + return altcp_tcp_new_ip_type(ip_type); + } + if (allocator->alloc == NULL) { + /* illegal allocator */ + return NULL; + } + conn = allocator->alloc(allocator->arg, ip_type); + if (conn == NULL) { + /* allocation failed */ + return NULL; + } + return conn; +} + +/** + * @ingroup altcp + * @see tcp_arg() + */ +void +altcp_arg(struct altcp_pcb *conn, void *arg) +{ + if (conn) { + conn->arg = arg; + } +} + +/** + * @ingroup altcp + * @see tcp_accept() + */ +void +altcp_accept(struct altcp_pcb *conn, altcp_accept_fn accept) +{ + if (conn != NULL) { + conn->accept = accept; + } +} + +/** + * @ingroup altcp + * @see tcp_recv() + */ +void +altcp_recv(struct altcp_pcb *conn, altcp_recv_fn recv) +{ + if (conn) { + conn->recv = recv; + } +} + +/** + * @ingroup altcp + * @see tcp_sent() + */ +void +altcp_sent(struct altcp_pcb *conn, altcp_sent_fn sent) +{ + if (conn) { + conn->sent = sent; + } +} + +/** + * @ingroup altcp + * @see tcp_poll() + */ +void +altcp_poll(struct altcp_pcb *conn, altcp_poll_fn poll, u8_t interval) +{ + if (conn) { + conn->poll = poll; + conn->pollinterval = interval; + if (conn->fns && conn->fns->set_poll) { + conn->fns->set_poll(conn, interval); + } + } +} + +/** + * @ingroup altcp + * @see tcp_err() + */ +void +altcp_err(struct altcp_pcb *conn, altcp_err_fn err) +{ + if (conn) { + conn->err = err; + } +} + +/* Generic functions calling the "virtual" ones */ + +/** + * @ingroup altcp + * @see tcp_recved() + */ +void +altcp_recved(struct altcp_pcb *conn, u16_t len) +{ + if (conn && conn->fns && conn->fns->recved) { + conn->fns->recved(conn, len); + } +} + +/** + * @ingroup altcp + * @see tcp_bind() + */ +err_t +altcp_bind(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port) +{ + if (conn && conn->fns && conn->fns->bind) { + return conn->fns->bind(conn, ipaddr, port); + } + return ERR_VAL; +} + +/** + * @ingroup altcp + * @see tcp_connect() + */ +err_t +altcp_connect(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port, altcp_connected_fn connected) +{ + if (conn && conn->fns && conn->fns->connect) { + return conn->fns->connect(conn, ipaddr, port, connected); + } + return ERR_VAL; +} + +/** + * @ingroup altcp + * @see tcp_listen_with_backlog_and_err() + */ +struct altcp_pcb * +altcp_listen_with_backlog_and_err(struct altcp_pcb *conn, u8_t backlog, err_t *err) +{ + if (conn && conn->fns && conn->fns->listen) { + return conn->fns->listen(conn, backlog, err); + } + return NULL; +} + +/** + * @ingroup altcp + * @see tcp_abort() + */ +void +altcp_abort(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->abort) { + conn->fns->abort(conn); + } +} + +/** + * @ingroup altcp + * @see tcp_close() + */ +err_t +altcp_close(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->close) { + return conn->fns->close(conn); + } + return ERR_VAL; +} + +/** + * @ingroup altcp + * @see tcp_shutdown() + */ +err_t +altcp_shutdown(struct altcp_pcb *conn, int shut_rx, int shut_tx) +{ + if (conn && conn->fns && conn->fns->shutdown) { + return conn->fns->shutdown(conn, shut_rx, shut_tx); + } + return ERR_VAL; +} + +/** + * @ingroup altcp + * @see tcp_write() + */ +err_t +altcp_write(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t apiflags) +{ + if (conn && conn->fns && conn->fns->write) { + return conn->fns->write(conn, dataptr, len, apiflags); + } + return ERR_VAL; +} + +/** + * @ingroup altcp + * @see tcp_output() + */ +err_t +altcp_output(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->output) { + return conn->fns->output(conn); + } + return ERR_VAL; +} + +/** + * @ingroup altcp + * @see tcp_mss() + */ +u16_t +altcp_mss(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->mss) { + return conn->fns->mss(conn); + } + return 0; +} + +/** + * @ingroup altcp + * @see tcp_sndbuf() + */ +u16_t +altcp_sndbuf(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->sndbuf) { + return conn->fns->sndbuf(conn); + } + return 0; +} + +/** + * @ingroup altcp + * @see tcp_sndqueuelen() + */ +u16_t +altcp_sndqueuelen(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->sndqueuelen) { + return conn->fns->sndqueuelen(conn); + } + return 0; +} + +void +altcp_nagle_disable(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->nagle_disable) { + conn->fns->nagle_disable(conn); + } +} + +void +altcp_nagle_enable(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->nagle_enable) { + conn->fns->nagle_enable(conn); + } +} + +int +altcp_nagle_disabled(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->nagle_disabled) { + return conn->fns->nagle_disabled(conn); + } + return 0; +} + +/** + * @ingroup altcp + * @see tcp_setprio() + */ +void +altcp_setprio(struct altcp_pcb *conn, u8_t prio) +{ + if (conn && conn->fns && conn->fns->setprio) { + conn->fns->setprio(conn, prio); + } +} + +err_t +altcp_get_tcp_addrinfo(struct altcp_pcb *conn, int local, ip_addr_t *addr, u16_t *port) +{ + if (conn && conn->fns && conn->fns->addrinfo) { + return conn->fns->addrinfo(conn, local, addr, port); + } + return ERR_VAL; +} + +ip_addr_t * +altcp_get_ip(struct altcp_pcb *conn, int local) +{ + if (conn && conn->fns && conn->fns->getip) { + return conn->fns->getip(conn, local); + } + return NULL; +} + +u16_t +altcp_get_port(struct altcp_pcb *conn, int local) +{ + if (conn && conn->fns && conn->fns->getport) { + return conn->fns->getport(conn, local); + } + return 0; +} + +#ifdef LWIP_DEBUG +enum tcp_state +altcp_dbg_get_tcp_state(struct altcp_pcb *conn) +{ + if (conn && conn->fns && conn->fns->dbg_get_tcp_state) { + return conn->fns->dbg_get_tcp_state(conn); + } + return CLOSED; +} +#endif + +/* Default implementations for the "virtual" functions */ + +void +altcp_default_set_poll(struct altcp_pcb *conn, u8_t interval) +{ + if (conn && conn->inner_conn) { + altcp_poll(conn->inner_conn, conn->poll, interval); + } +} + +void +altcp_default_recved(struct altcp_pcb *conn, u16_t len) +{ + if (conn && conn->inner_conn) { + altcp_recved(conn->inner_conn, len); + } +} + +err_t +altcp_default_bind(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port) +{ + if (conn && conn->inner_conn) { + return altcp_bind(conn->inner_conn, ipaddr, port); + } + return ERR_VAL; +} + +err_t +altcp_default_shutdown(struct altcp_pcb *conn, int shut_rx, int shut_tx) +{ + if (conn) { + if (shut_rx && shut_tx && conn->fns && conn->fns->close) { + /* default shutdown for both sides is close */ + return conn->fns->close(conn); + } + if (conn->inner_conn) { + return altcp_shutdown(conn->inner_conn, shut_rx, shut_tx); + } + } + return ERR_VAL; +} + +err_t +altcp_default_write(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t apiflags) +{ + if (conn && conn->inner_conn) { + return altcp_write(conn->inner_conn, dataptr, len, apiflags); + } + return ERR_VAL; +} + +err_t +altcp_default_output(struct altcp_pcb *conn) +{ + if (conn && conn->inner_conn) { + return altcp_output(conn->inner_conn); + } + return ERR_VAL; +} + +u16_t +altcp_default_mss(struct altcp_pcb *conn) +{ + if (conn && conn->inner_conn) { + return altcp_mss(conn->inner_conn); + } + return 0; +} + +u16_t +altcp_default_sndbuf(struct altcp_pcb *conn) +{ + if (conn && conn->inner_conn) { + return altcp_sndbuf(conn->inner_conn); + } + return 0; +} + +u16_t +altcp_default_sndqueuelen(struct altcp_pcb *conn) +{ + if (conn && conn->inner_conn) { + return altcp_sndqueuelen(conn->inner_conn); + } + return 0; +} + +void +altcp_default_nagle_disable(struct altcp_pcb *conn) +{ + if (conn && conn->inner_conn) { + altcp_nagle_disable(conn->inner_conn); + } +} + +void +altcp_default_nagle_enable(struct altcp_pcb *conn) +{ + if (conn && conn->inner_conn) { + altcp_nagle_enable(conn->inner_conn); + } +} + +int +altcp_default_nagle_disabled(struct altcp_pcb *conn) +{ + if (conn && conn->inner_conn) { + return altcp_nagle_disabled(conn->inner_conn); + } + return 0; +} + +void +altcp_default_setprio(struct altcp_pcb *conn, u8_t prio) +{ + if (conn && conn->inner_conn) { + altcp_setprio(conn->inner_conn, prio); + } +} + +void +altcp_default_dealloc(struct altcp_pcb *conn) +{ + LWIP_UNUSED_ARG(conn); + /* nothing to do */ +} + +err_t +altcp_default_get_tcp_addrinfo(struct altcp_pcb *conn, int local, ip_addr_t *addr, u16_t *port) +{ + if (conn && conn->inner_conn) { + return altcp_get_tcp_addrinfo(conn->inner_conn, local, addr, port); + } + return ERR_VAL; +} + +ip_addr_t * +altcp_default_get_ip(struct altcp_pcb *conn, int local) +{ + if (conn && conn->inner_conn) { + return altcp_get_ip(conn->inner_conn, local); + } + return NULL; +} + +u16_t +altcp_default_get_port(struct altcp_pcb *conn, int local) +{ + if (conn && conn->inner_conn) { + return altcp_get_port(conn->inner_conn, local); + } + return 0; +} + +#ifdef LWIP_DEBUG +enum tcp_state +altcp_default_dbg_get_tcp_state(struct altcp_pcb *conn) +{ + if (conn && conn->inner_conn) { + return altcp_dbg_get_tcp_state(conn->inner_conn); + } + return CLOSED; +} +#endif + + +#endif /* LWIP_ALTCP */ diff --git a/Other/tun2socks/core/c/core/altcp_alloc.c b/Other/tun2socks/core/c/core/altcp_alloc.c new file mode 100644 index 0000000..cd619bc --- /dev/null +++ b/Other/tun2socks/core/c/core/altcp_alloc.c @@ -0,0 +1,87 @@ +/** + * @file + * Application layered TCP connection API (to be used from TCPIP thread)\n + * This interface mimics the tcp callback API to the application while preventing + * direct linking (much like virtual functions). + * This way, an application can make use of other application layer protocols + * on top of TCP without knowing the details (e.g. TLS, proxy connection). + * + * This file contains allocation implementation that combine several layers. + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ + +#include "lwip/opt.h" + +#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/altcp.h" +#include "lwip/altcp_tcp.h" +#include "lwip/altcp_tls.h" +#include "lwip/priv/altcp_priv.h" +#include "lwip/mem.h" + +#include + +#if LWIP_ALTCP_TLS + +/** This standard allocator function creates an altcp pcb for + * TLS over TCP */ +struct altcp_pcb * +altcp_tls_new(struct altcp_tls_config *config, u8_t ip_type) +{ + struct altcp_pcb *inner_conn, *ret; + LWIP_UNUSED_ARG(ip_type); + + inner_conn = altcp_tcp_new_ip_type(ip_type); + if (inner_conn == NULL) { + return NULL; + } + ret = altcp_tls_wrap(config, inner_conn); + if (ret == NULL) { + altcp_close(inner_conn); + } + return ret; +} + +/** This standard allocator function creates an altcp pcb for + * TLS over TCP */ +struct altcp_pcb * +altcp_tls_alloc(void *arg, u8_t ip_type) +{ + return altcp_tls_new((struct altcp_tls_config *)arg, ip_type); +} + +#endif /* LWIP_ALTCP_TLS */ + +#endif /* LWIP_ALTCP */ diff --git a/Other/tun2socks/core/c/core/altcp_tcp.c b/Other/tun2socks/core/c/core/altcp_tcp.c new file mode 100644 index 0000000..b715f04 --- /dev/null +++ b/Other/tun2socks/core/c/core/altcp_tcp.c @@ -0,0 +1,543 @@ +/** + * @file + * Application layered TCP connection API (to be used from TCPIP thread)\n + * This interface mimics the tcp callback API to the application while preventing + * direct linking (much like virtual functions). + * This way, an application can make use of other application layer protocols + * on top of TCP without knowing the details (e.g. TLS, proxy connection). + * + * This file contains the base implementation calling into tcp. + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ + +#include "lwip/opt.h" + +#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/altcp.h" +#include "lwip/altcp_tcp.h" +#include "lwip/priv/altcp_priv.h" +#include "lwip/tcp.h" +#include "lwip/mem.h" + +#include + +#define ALTCP_TCP_ASSERT_CONN(conn) do { \ + LWIP_ASSERT("conn->inner_conn == NULL", (conn)->inner_conn == NULL); \ + LWIP_UNUSED_ARG(conn); /* for LWIP_NOASSERT */ } while(0) +#define ALTCP_TCP_ASSERT_CONN_PCB(conn, tpcb) do { \ + LWIP_ASSERT("pcb mismatch", (conn)->state == tpcb); \ + LWIP_UNUSED_ARG(tpcb); /* for LWIP_NOASSERT */ \ + ALTCP_TCP_ASSERT_CONN(conn); } while(0) + + +/* Variable prototype, the actual declaration is at the end of this file + since it contains pointers to static functions declared here */ +extern const struct altcp_functions altcp_tcp_functions; + +static void altcp_tcp_setup(struct altcp_pcb *conn, struct tcp_pcb *tpcb); + +/* callback functions for TCP */ +static err_t +altcp_tcp_accept(void *arg, struct tcp_pcb *new_tpcb, err_t err) +{ + struct altcp_pcb *listen_conn = (struct altcp_pcb *)arg; + if (listen_conn && listen_conn->accept) { + /* create a new altcp_conn to pass to the next 'accept' callback */ + struct altcp_pcb *new_conn = altcp_alloc(); + if (new_conn == NULL) { + return ERR_MEM; + } + altcp_tcp_setup(new_conn, new_tpcb); + return listen_conn->accept(listen_conn->arg, new_conn, err); + } + return ERR_ARG; +} + +static err_t +altcp_tcp_connected(void *arg, struct tcp_pcb *tpcb, err_t err) +{ + struct altcp_pcb *conn = (struct altcp_pcb *)arg; + if (conn) { + ALTCP_TCP_ASSERT_CONN_PCB(conn, tpcb); + if (conn->connected) { + return conn->connected(conn->arg, conn, err); + } + } + return ERR_OK; +} + +static err_t +altcp_tcp_recv(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err) +{ + struct altcp_pcb *conn = (struct altcp_pcb *)arg; + if (conn) { + ALTCP_TCP_ASSERT_CONN_PCB(conn, tpcb); + if (conn->recv) { + return conn->recv(conn->arg, conn, p, err); + } + } + if (p != NULL) { + /* prevent memory leaks */ + pbuf_free(p); + } + return ERR_OK; +} + +static err_t +altcp_tcp_sent(void *arg, struct tcp_pcb *tpcb, u16_t len) +{ + struct altcp_pcb *conn = (struct altcp_pcb *)arg; + if (conn) { + ALTCP_TCP_ASSERT_CONN_PCB(conn, tpcb); + if (conn->sent) { + return conn->sent(conn->arg, conn, len); + } + } + return ERR_OK; +} + +static err_t +altcp_tcp_poll(void *arg, struct tcp_pcb *tpcb) +{ + struct altcp_pcb *conn = (struct altcp_pcb *)arg; + if (conn) { + ALTCP_TCP_ASSERT_CONN_PCB(conn, tpcb); + if (conn->poll) { + return conn->poll(conn->arg, conn); + } + } + return ERR_OK; +} + +static void +altcp_tcp_err(void *arg, err_t err) +{ + struct altcp_pcb *conn = (struct altcp_pcb *)arg; + if (conn) { + conn->state = NULL; /* already freed */ + if (conn->err) { + conn->err(conn->arg, err); + } + altcp_free(conn); + } +} + +/* setup functions */ + +static void +altcp_tcp_remove_callbacks(struct tcp_pcb *tpcb) +{ + tcp_arg(tpcb, NULL); + tcp_recv(tpcb, NULL); + tcp_sent(tpcb, NULL); + tcp_err(tpcb, NULL); + tcp_poll(tpcb, NULL, tpcb->pollinterval); +} + +static void +altcp_tcp_setup_callbacks(struct altcp_pcb *conn, struct tcp_pcb *tpcb) +{ + tcp_arg(tpcb, conn); + tcp_recv(tpcb, altcp_tcp_recv); + tcp_sent(tpcb, altcp_tcp_sent); + tcp_err(tpcb, altcp_tcp_err); + /* tcp_poll is set when interval is set by application */ + /* listen is set totally different :-) */ +} + +static void +altcp_tcp_setup(struct altcp_pcb *conn, struct tcp_pcb *tpcb) +{ + altcp_tcp_setup_callbacks(conn, tpcb); + conn->state = tpcb; + conn->fns = &altcp_tcp_functions; +} + +struct altcp_pcb * +altcp_tcp_new_ip_type(u8_t ip_type) +{ + /* Allocate the tcp pcb first to invoke the priority handling code + if we're out of pcbs */ + struct tcp_pcb *tpcb = tcp_new_ip_type(ip_type); + if (tpcb != NULL) { + struct altcp_pcb *ret = altcp_alloc(); + if (ret != NULL) { + altcp_tcp_setup(ret, tpcb); + return ret; + } else { + /* altcp_pcb allocation failed -> free the tcp_pcb too */ + tcp_close(tpcb); + } + } + return NULL; +} + +/** altcp_tcp allocator function fitting to @ref altcp_allocator_t / @ref altcp_new. +* +* arg pointer is not used for TCP. +*/ +struct altcp_pcb * +altcp_tcp_alloc(void *arg, u8_t ip_type) +{ + LWIP_UNUSED_ARG(arg); + return altcp_tcp_new_ip_type(ip_type); +} + +struct altcp_pcb * +altcp_tcp_wrap(struct tcp_pcb *tpcb) +{ + if (tpcb != NULL) { + struct altcp_pcb *ret = altcp_alloc(); + if (ret != NULL) { + altcp_tcp_setup(ret, tpcb); + return ret; + } + } + return NULL; +} + + +/* "virtual" functions calling into tcp */ +static void +altcp_tcp_set_poll(struct altcp_pcb *conn, u8_t interval) +{ + if (conn != NULL) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + tcp_poll(pcb, altcp_tcp_poll, interval); + } +} + +static void +altcp_tcp_recved(struct altcp_pcb *conn, u16_t len) +{ + if (conn != NULL) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + tcp_recved(pcb, len); + } +} + +static err_t +altcp_tcp_bind(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port) +{ + struct tcp_pcb *pcb; + if (conn == NULL) { + return ERR_VAL; + } + ALTCP_TCP_ASSERT_CONN(conn); + pcb = (struct tcp_pcb *)conn->state; + return tcp_bind(pcb, ipaddr, port); +} + +static err_t +altcp_tcp_connect(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port, altcp_connected_fn connected) +{ + struct tcp_pcb *pcb; + if (conn == NULL) { + return ERR_VAL; + } + ALTCP_TCP_ASSERT_CONN(conn); + conn->connected = connected; + pcb = (struct tcp_pcb *)conn->state; + return tcp_connect(pcb, ipaddr, port, altcp_tcp_connected); +} + +static struct altcp_pcb * +altcp_tcp_listen(struct altcp_pcb *conn, u8_t backlog, err_t *err) +{ + struct tcp_pcb *pcb; + struct tcp_pcb *lpcb; + if (conn == NULL) { + return NULL; + } + ALTCP_TCP_ASSERT_CONN(conn); + pcb = (struct tcp_pcb *)conn->state; + lpcb = tcp_listen_with_backlog_and_err(pcb, backlog, err); + if (lpcb != NULL) { + conn->state = lpcb; + tcp_accept(lpcb, altcp_tcp_accept); + return conn; + } + return NULL; +} + +static void +altcp_tcp_abort(struct altcp_pcb *conn) +{ + if (conn != NULL) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + if (pcb) { + tcp_abort(pcb); + } + } +} + +static err_t +altcp_tcp_close(struct altcp_pcb *conn) +{ + struct tcp_pcb *pcb; + if (conn == NULL) { + return ERR_VAL; + } + ALTCP_TCP_ASSERT_CONN(conn); + pcb = (struct tcp_pcb *)conn->state; + if (pcb) { + err_t err; + tcp_poll_fn oldpoll = pcb->poll; + altcp_tcp_remove_callbacks(pcb); + err = tcp_close(pcb); + if (err != ERR_OK) { + /* not closed, set up all callbacks again */ + altcp_tcp_setup_callbacks(conn, pcb); + /* poll callback is not included in the above */ + tcp_poll(pcb, oldpoll, pcb->pollinterval); + return err; + } + conn->state = NULL; /* unsafe to reference pcb after tcp_close(). */ + } + altcp_free(conn); + return ERR_OK; +} + +static err_t +altcp_tcp_shutdown(struct altcp_pcb *conn, int shut_rx, int shut_tx) +{ + struct tcp_pcb *pcb; + if (conn == NULL) { + return ERR_VAL; + } + ALTCP_TCP_ASSERT_CONN(conn); + pcb = (struct tcp_pcb *)conn->state; + return tcp_shutdown(pcb, shut_rx, shut_tx); +} + +static err_t +altcp_tcp_write(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t apiflags) +{ + struct tcp_pcb *pcb; + if (conn == NULL) { + return ERR_VAL; + } + ALTCP_TCP_ASSERT_CONN(conn); + pcb = (struct tcp_pcb *)conn->state; + return tcp_write(pcb, dataptr, len, apiflags); +} + +static err_t +altcp_tcp_output(struct altcp_pcb *conn) +{ + struct tcp_pcb *pcb; + if (conn == NULL) { + return ERR_VAL; + } + ALTCP_TCP_ASSERT_CONN(conn); + pcb = (struct tcp_pcb *)conn->state; + return tcp_output(pcb); +} + +static u16_t +altcp_tcp_mss(struct altcp_pcb *conn) +{ + struct tcp_pcb *pcb; + if (conn == NULL) { + return 0; + } + ALTCP_TCP_ASSERT_CONN(conn); + pcb = (struct tcp_pcb *)conn->state; + return tcp_mss(pcb); +} + +static u16_t +altcp_tcp_sndbuf(struct altcp_pcb *conn) +{ + struct tcp_pcb *pcb; + if (conn == NULL) { + return 0; + } + ALTCP_TCP_ASSERT_CONN(conn); + pcb = (struct tcp_pcb *)conn->state; + return tcp_sndbuf(pcb); +} + +static u16_t +altcp_tcp_sndqueuelen(struct altcp_pcb *conn) +{ + struct tcp_pcb *pcb; + if (conn == NULL) { + return 0; + } + ALTCP_TCP_ASSERT_CONN(conn); + pcb = (struct tcp_pcb *)conn->state; + return tcp_sndqueuelen(pcb); +} + +static void +altcp_tcp_nagle_disable(struct altcp_pcb *conn) +{ + if (conn && conn->state) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + tcp_nagle_disable(pcb); + } +} + +static void +altcp_tcp_nagle_enable(struct altcp_pcb *conn) +{ + if (conn && conn->state) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + tcp_nagle_enable(pcb); + } +} + +static int +altcp_tcp_nagle_disabled(struct altcp_pcb *conn) +{ + if (conn && conn->state) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + return tcp_nagle_disabled(pcb); + } + return 0; +} + +static void +altcp_tcp_setprio(struct altcp_pcb *conn, u8_t prio) +{ + if (conn != NULL) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + tcp_setprio(pcb, prio); + } +} + +static void +altcp_tcp_dealloc(struct altcp_pcb *conn) +{ + LWIP_UNUSED_ARG(conn); + ALTCP_TCP_ASSERT_CONN(conn); + /* no private state to clean up */ +} + +static err_t +altcp_tcp_get_tcp_addrinfo(struct altcp_pcb *conn, int local, ip_addr_t *addr, u16_t *port) +{ + if (conn) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + return tcp_tcp_get_tcp_addrinfo(pcb, local, addr, port); + } + return ERR_VAL; +} + +static ip_addr_t * +altcp_tcp_get_ip(struct altcp_pcb *conn, int local) +{ + if (conn) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + if (pcb) { + if (local) { + return &pcb->local_ip; + } else { + return &pcb->remote_ip; + } + } + } + return NULL; +} + +static u16_t +altcp_tcp_get_port(struct altcp_pcb *conn, int local) +{ + if (conn) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + if (pcb) { + if (local) { + return pcb->local_port; + } else { + return pcb->remote_port; + } + } + } + return 0; +} + +#ifdef LWIP_DEBUG +static enum tcp_state +altcp_tcp_dbg_get_tcp_state(struct altcp_pcb *conn) +{ + if (conn) { + struct tcp_pcb *pcb = (struct tcp_pcb *)conn->state; + ALTCP_TCP_ASSERT_CONN(conn); + if (pcb) { + return pcb->state; + } + } + return CLOSED; +} +#endif +const struct altcp_functions altcp_tcp_functions = { + altcp_tcp_set_poll, + altcp_tcp_recved, + altcp_tcp_bind, + altcp_tcp_connect, + altcp_tcp_listen, + altcp_tcp_abort, + altcp_tcp_close, + altcp_tcp_shutdown, + altcp_tcp_write, + altcp_tcp_output, + altcp_tcp_mss, + altcp_tcp_sndbuf, + altcp_tcp_sndqueuelen, + altcp_tcp_nagle_disable, + altcp_tcp_nagle_enable, + altcp_tcp_nagle_disabled, + altcp_tcp_setprio, + altcp_tcp_dealloc, + altcp_tcp_get_tcp_addrinfo, + altcp_tcp_get_ip, + altcp_tcp_get_port +#ifdef LWIP_DEBUG + , altcp_tcp_dbg_get_tcp_state +#endif +}; + +#endif /* LWIP_ALTCP */ diff --git a/Other/tun2socks/core/c/core/def.c b/Other/tun2socks/core/c/core/def.c new file mode 100644 index 0000000..9da36fe --- /dev/null +++ b/Other/tun2socks/core/c/core/def.c @@ -0,0 +1,240 @@ +/** + * @file + * Common functions used throughout the stack. + * + * These are reference implementations of the byte swapping functions. + * Again with the aim of being simple, correct and fully portable. + * Byte swapping is the second thing you would want to optimize. You will + * need to port it to your architecture and in your cc.h: + * + * \#define lwip_htons(x) your_htons + * \#define lwip_htonl(x) your_htonl + * + * Note lwip_ntohs() and lwip_ntohl() are merely references to the htonx counterparts. + * + * If you \#define them to htons() and htonl(), you should + * \#define LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS to prevent lwIP from + * defining htonx/ntohx compatibility macros. + + * @defgroup sys_nonstandard Non-standard functions + * @ingroup sys_layer + * lwIP provides default implementations for non-standard functions. + * These can be mapped to OS functions to reduce code footprint if desired. + * All defines related to this section must not be placed in lwipopts.h, + * but in arch/cc.h! + * These options cannot be \#defined in lwipopts.h since they are not options + * of lwIP itself, but options of the lwIP port to your system. + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ + +#include "lwip/opt.h" +#include "lwip/def.h" + +#include + +#if BYTE_ORDER == LITTLE_ENDIAN + +#if !defined(lwip_htons) +/** + * Convert an u16_t from host- to network byte order. + * + * @param n u16_t in host byte order + * @return n in network byte order + */ +u16_t +lwip_htons(u16_t n) +{ + return PP_HTONS(n); +} +#endif /* lwip_htons */ + +#if !defined(lwip_htonl) +/** + * Convert an u32_t from host- to network byte order. + * + * @param n u32_t in host byte order + * @return n in network byte order + */ +u32_t +lwip_htonl(u32_t n) +{ + return PP_HTONL(n); +} +#endif /* lwip_htonl */ + +#endif /* BYTE_ORDER == LITTLE_ENDIAN */ + +#ifndef lwip_strnstr +/** + * @ingroup sys_nonstandard + * lwIP default implementation for strnstr() non-standard function. + * This can be \#defined to strnstr() depending on your platform port. + */ +char * +lwip_strnstr(const char *buffer, const char *token, size_t n) +{ + const char *p; + size_t tokenlen = strlen(token); + if (tokenlen == 0) { + return LWIP_CONST_CAST(char *, buffer); + } + for (p = buffer; *p && (p + tokenlen <= buffer + n); p++) { + if ((*p == *token) && (strncmp(p, token, tokenlen) == 0)) { + return LWIP_CONST_CAST(char *, p); + } + } + return NULL; +} +#endif + +#ifndef lwip_stricmp +/** + * @ingroup sys_nonstandard + * lwIP default implementation for stricmp() non-standard function. + * This can be \#defined to stricmp() depending on your platform port. + */ +int +lwip_stricmp(const char *str1, const char *str2) +{ + char c1, c2; + + do { + c1 = *str1++; + c2 = *str2++; + if (c1 != c2) { + char c1_upc = c1 | 0x20; + if ((c1_upc >= 'a') && (c1_upc <= 'z')) { + /* characters are not equal an one is in the alphabet range: + downcase both chars and check again */ + char c2_upc = c2 | 0x20; + if (c1_upc != c2_upc) { + /* still not equal */ + /* don't care for < or > */ + return 1; + } + } else { + /* characters are not equal but none is in the alphabet range */ + return 1; + } + } + } while (c1 != 0); + return 0; +} +#endif + +#ifndef lwip_strnicmp +/** + * @ingroup sys_nonstandard + * lwIP default implementation for strnicmp() non-standard function. + * This can be \#defined to strnicmp() depending on your platform port. + */ +int +lwip_strnicmp(const char *str1, const char *str2, size_t len) +{ + char c1, c2; + + do { + c1 = *str1++; + c2 = *str2++; + if (c1 != c2) { + char c1_upc = c1 | 0x20; + if ((c1_upc >= 'a') && (c1_upc <= 'z')) { + /* characters are not equal an one is in the alphabet range: + downcase both chars and check again */ + char c2_upc = c2 | 0x20; + if (c1_upc != c2_upc) { + /* still not equal */ + /* don't care for < or > */ + return 1; + } + } else { + /* characters are not equal but none is in the alphabet range */ + return 1; + } + } + len--; + } while ((len != 0) && (c1 != 0)); + return 0; +} +#endif + +#ifndef lwip_itoa +/** + * @ingroup sys_nonstandard + * lwIP default implementation for itoa() non-standard function. + * This can be \#defined to itoa() or snprintf(result, bufsize, "%d", number) depending on your platform port. + */ +void +lwip_itoa(char *result, size_t bufsize, int number) +{ + char *res = result; + char *tmp = result + bufsize - 1; + int n = (number >= 0) ? number : -number; + + /* handle invalid bufsize */ + if (bufsize < 2) { + if (bufsize == 1) { + *result = 0; + } + return; + } + + /* First, add sign */ + if (number < 0) { + *res++ = '-'; + } + /* Then create the string from the end and stop if buffer full, + and ensure output string is zero terminated */ + *tmp = 0; + while ((n != 0) && (tmp > res)) { + char val = (char)('0' + (n % 10)); + tmp--; + *tmp = val; + n = n / 10; + } + if (n) { + /* buffer is too small */ + *result = 0; + return; + } + if (*tmp == 0) { + /* Nothing added? */ + *res++ = '0'; + *res++ = 0; + return; + } + /* move from temporary buffer to output buffer (sign is not moved) */ + memmove(res, tmp, (size_t)((result + bufsize) - tmp)); +} +#endif diff --git a/Other/tun2socks/core/c/core/dns.c b/Other/tun2socks/core/c/core/dns.c new file mode 100644 index 0000000..9d2f61e --- /dev/null +++ b/Other/tun2socks/core/c/core/dns.c @@ -0,0 +1,1631 @@ +/** + * @file + * DNS - host name to IP address resolver. + * + * @defgroup dns DNS + * @ingroup callbackstyle_api + * + * Implements a DNS host name to IP address resolver. + * + * The lwIP DNS resolver functions are used to lookup a host name and + * map it to a numerical IP address. It maintains a list of resolved + * hostnames that can be queried with the dns_lookup() function. + * New hostnames can be resolved using the dns_query() function. + * + * The lwIP version of the resolver also adds a non-blocking version of + * gethostbyname() that will work with a raw API application. This function + * checks for an IP address string first and converts it if it is valid. + * gethostbyname() then does a dns_lookup() to see if the name is + * already in the table. If so, the IP is returned. If not, a query is + * issued and the function returns with a ERR_INPROGRESS status. The app + * using the dns client must then go into a waiting state. + * + * Once a hostname has been resolved (or found to be non-existent), + * the resolver code calls a specified callback function (which + * must be implemented by the module that uses the resolver). + * + * Multicast DNS queries are supported for names ending on ".local". + * However, only "One-Shot Multicast DNS Queries" are supported (RFC 6762 + * chapter 5.1), this is not a fully compliant implementation of continuous + * mDNS querying! + * + * All functions must be called from TCPIP thread. + * + * @see DNS_MAX_SERVERS + * @see LWIP_DHCP_MAX_DNS_SERVERS + * @see @ref netconn_common for thread-safe access. + */ + +/* + * Port to lwIP from uIP + * by Jim Pettinato April 2007 + * + * security fixes and more by Simon Goldschmidt + * + * uIP version Copyright (c) 2002-2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/*----------------------------------------------------------------------------- + * RFC 1035 - Domain names - implementation and specification + * RFC 2181 - Clarifications to the DNS Specification + *----------------------------------------------------------------------------*/ + +/** @todo: define good default values (rfc compliance) */ +/** @todo: improve answer parsing, more checkings... */ +/** @todo: check RFC1035 - 7.3. Processing responses */ +/** @todo: one-shot mDNS: dual-stack fallback to another IP version */ + +/*----------------------------------------------------------------------------- + * Includes + *----------------------------------------------------------------------------*/ + +#include "lwip/opt.h" + +#if LWIP_DNS /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/def.h" +#include "lwip/udp.h" +#include "lwip/mem.h" +#include "lwip/memp.h" +#include "lwip/dns.h" +#include "lwip/prot/dns.h" + +#include + +/** Random generator function to create random TXIDs and source ports for queries */ +#ifndef DNS_RAND_TXID +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_XID) != 0) +#define DNS_RAND_TXID LWIP_RAND +#else +static u16_t dns_txid; +#define DNS_RAND_TXID() (++dns_txid) +#endif +#endif + +/** Limits the source port to be >= 1024 by default */ +#ifndef DNS_PORT_ALLOWED +#define DNS_PORT_ALLOWED(port) ((port) >= 1024) +#endif + +/** DNS resource record max. TTL (one week as default) */ +#ifndef DNS_MAX_TTL +#define DNS_MAX_TTL 604800 +#elif DNS_MAX_TTL > 0x7FFFFFFF +#error DNS_MAX_TTL must be a positive 32-bit value +#endif + +#if DNS_TABLE_SIZE > 255 +#error DNS_TABLE_SIZE must fit into an u8_t +#endif +#if DNS_MAX_SERVERS > 255 +#error DNS_MAX_SERVERS must fit into an u8_t +#endif + +/* The number of parallel requests (i.e. calls to dns_gethostbyname + * that cannot be answered from the DNS table. + * This is set to the table size by default. + */ +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0) +#ifndef DNS_MAX_REQUESTS +#define DNS_MAX_REQUESTS DNS_TABLE_SIZE +#else +#if DNS_MAX_REQUESTS > 255 +#error DNS_MAX_REQUESTS must fit into an u8_t +#endif +#endif +#else +/* In this configuration, both arrays have to have the same size and are used + * like one entry (used/free) */ +#define DNS_MAX_REQUESTS DNS_TABLE_SIZE +#endif + +/* The number of UDP source ports used in parallel */ +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0) +#ifndef DNS_MAX_SOURCE_PORTS +#define DNS_MAX_SOURCE_PORTS DNS_MAX_REQUESTS +#else +#if DNS_MAX_SOURCE_PORTS > 255 +#error DNS_MAX_SOURCE_PORTS must fit into an u8_t +#endif +#endif +#else +#ifdef DNS_MAX_SOURCE_PORTS +#undef DNS_MAX_SOURCE_PORTS +#endif +#define DNS_MAX_SOURCE_PORTS 1 +#endif + +#if LWIP_IPV4 && LWIP_IPV6 +#define LWIP_DNS_ADDRTYPE_IS_IPV6(t) (((t) == LWIP_DNS_ADDRTYPE_IPV6_IPV4) || ((t) == LWIP_DNS_ADDRTYPE_IPV6)) +#define LWIP_DNS_ADDRTYPE_MATCH_IP(t, ip) (IP_IS_V6_VAL(ip) ? LWIP_DNS_ADDRTYPE_IS_IPV6(t) : (!LWIP_DNS_ADDRTYPE_IS_IPV6(t))) +#define LWIP_DNS_ADDRTYPE_ARG(x) , x +#define LWIP_DNS_ADDRTYPE_ARG_OR_ZERO(x) x +#define LWIP_DNS_SET_ADDRTYPE(x, y) do { x = y; } while(0) +#else +#if LWIP_IPV6 +#define LWIP_DNS_ADDRTYPE_IS_IPV6(t) 1 +#else +#define LWIP_DNS_ADDRTYPE_IS_IPV6(t) 0 +#endif +#define LWIP_DNS_ADDRTYPE_MATCH_IP(t, ip) 1 +#define LWIP_DNS_ADDRTYPE_ARG(x) +#define LWIP_DNS_ADDRTYPE_ARG_OR_ZERO(x) 0 +#define LWIP_DNS_SET_ADDRTYPE(x, y) +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + +#if LWIP_DNS_SUPPORT_MDNS_QUERIES +#define LWIP_DNS_ISMDNS_ARG(x) , x +#else +#define LWIP_DNS_ISMDNS_ARG(x) +#endif + +/** DNS query message structure. + No packing needed: only used locally on the stack. */ +struct dns_query { + /* DNS query record starts with either a domain name or a pointer + to a name already present somewhere in the packet. */ + u16_t type; + u16_t cls; +}; +#define SIZEOF_DNS_QUERY 4 + +/** DNS answer message structure. + No packing needed: only used locally on the stack. */ +struct dns_answer { + /* DNS answer record starts with either a domain name or a pointer + to a name already present somewhere in the packet. */ + u16_t type; + u16_t cls; + u32_t ttl; + u16_t len; +}; +#define SIZEOF_DNS_ANSWER 10 +/* maximum allowed size for the struct due to non-packed */ +#define SIZEOF_DNS_ANSWER_ASSERT 12 + +/* DNS table entry states */ +typedef enum { + DNS_STATE_UNUSED = 0, + DNS_STATE_NEW = 1, + DNS_STATE_ASKING = 2, + DNS_STATE_DONE = 3 +} dns_state_enum_t; + +/** DNS table entry */ +struct dns_table_entry { + u32_t ttl; + ip_addr_t ipaddr; + u16_t txid; + u8_t state; + u8_t server_idx; + u8_t tmr; + u8_t retries; + u8_t seqno; +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0) + u8_t pcb_idx; +#endif + char name[DNS_MAX_NAME_LENGTH]; +#if LWIP_IPV4 && LWIP_IPV6 + u8_t reqaddrtype; +#endif /* LWIP_IPV4 && LWIP_IPV6 */ +#if LWIP_DNS_SUPPORT_MDNS_QUERIES + u8_t is_mdns; +#endif +}; + +/** DNS request table entry: used when dns_gehostbyname cannot answer the + * request from the DNS table */ +struct dns_req_entry { + /* pointer to callback on DNS query done */ + dns_found_callback found; + /* argument passed to the callback function */ + void *arg; +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0) + u8_t dns_table_idx; +#endif +#if LWIP_IPV4 && LWIP_IPV6 + u8_t reqaddrtype; +#endif /* LWIP_IPV4 && LWIP_IPV6 */ +}; + +#if DNS_LOCAL_HOSTLIST + +#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC +/** Local host-list. For hostnames in this list, no + * external name resolution is performed */ +static struct local_hostlist_entry *local_hostlist_dynamic; +#else /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ + +/** Defining this allows the local_hostlist_static to be placed in a different + * linker section (e.g. FLASH) */ +#ifndef DNS_LOCAL_HOSTLIST_STORAGE_PRE +#define DNS_LOCAL_HOSTLIST_STORAGE_PRE static +#endif /* DNS_LOCAL_HOSTLIST_STORAGE_PRE */ +/** Defining this allows the local_hostlist_static to be placed in a different + * linker section (e.g. FLASH) */ +#ifndef DNS_LOCAL_HOSTLIST_STORAGE_POST +#define DNS_LOCAL_HOSTLIST_STORAGE_POST +#endif /* DNS_LOCAL_HOSTLIST_STORAGE_POST */ +DNS_LOCAL_HOSTLIST_STORAGE_PRE struct local_hostlist_entry local_hostlist_static[] + DNS_LOCAL_HOSTLIST_STORAGE_POST = DNS_LOCAL_HOSTLIST_INIT; + +#endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ + +static void dns_init_local(void); +static err_t dns_lookup_local(const char *hostname, ip_addr_t *addr LWIP_DNS_ADDRTYPE_ARG(u8_t dns_addrtype)); +#endif /* DNS_LOCAL_HOSTLIST */ + + +/* forward declarations */ +static void dns_recv(void *s, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port); +static void dns_check_entries(void); +static void dns_call_found(u8_t idx, ip_addr_t *addr); + +/*----------------------------------------------------------------------------- + * Globals + *----------------------------------------------------------------------------*/ + +/* DNS variables */ +static struct udp_pcb *dns_pcbs[DNS_MAX_SOURCE_PORTS]; +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0) +static u8_t dns_last_pcb_idx; +#endif +static u8_t dns_seqno; +static struct dns_table_entry dns_table[DNS_TABLE_SIZE]; +static struct dns_req_entry dns_requests[DNS_MAX_REQUESTS]; +static ip_addr_t dns_servers[DNS_MAX_SERVERS]; + +#if LWIP_IPV4 +const ip_addr_t dns_mquery_v4group = DNS_MQUERY_IPV4_GROUP_INIT; +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 +const ip_addr_t dns_mquery_v6group = DNS_MQUERY_IPV6_GROUP_INIT; +#endif /* LWIP_IPV6 */ + +/** + * Initialize the resolver: set up the UDP pcb and configure the default server + * (if DNS_SERVER_ADDRESS is set). + */ +void +dns_init(void) +{ +#ifdef DNS_SERVER_ADDRESS + /* initialize default DNS server address */ + ip_addr_t dnsserver; + DNS_SERVER_ADDRESS(&dnsserver); + dns_setserver(0, &dnsserver); +#endif /* DNS_SERVER_ADDRESS */ + + LWIP_ASSERT("sanity check SIZEOF_DNS_QUERY", + sizeof(struct dns_query) == SIZEOF_DNS_QUERY); + LWIP_ASSERT("sanity check SIZEOF_DNS_ANSWER", + sizeof(struct dns_answer) <= SIZEOF_DNS_ANSWER_ASSERT); + + LWIP_DEBUGF(DNS_DEBUG, ("dns_init: initializing\n")); + + /* if dns client not yet initialized... */ +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) == 0) + if (dns_pcbs[0] == NULL) { + dns_pcbs[0] = udp_new_ip_type(IPADDR_TYPE_ANY); + LWIP_ASSERT("dns_pcbs[0] != NULL", dns_pcbs[0] != NULL); + + /* initialize DNS table not needed (initialized to zero since it is a + * global variable) */ + LWIP_ASSERT("For implicit initialization to work, DNS_STATE_UNUSED needs to be 0", + DNS_STATE_UNUSED == 0); + + /* initialize DNS client */ + udp_bind(dns_pcbs[0], IP_ANY_TYPE, 0); + udp_recv(dns_pcbs[0], dns_recv, NULL); + } +#endif + +#if DNS_LOCAL_HOSTLIST + dns_init_local(); +#endif +} + +/** + * @ingroup dns + * Initialize one of the DNS servers. + * + * @param numdns the index of the DNS server to set must be < DNS_MAX_SERVERS + * @param dnsserver IP address of the DNS server to set + */ +void +dns_setserver(u8_t numdns, const ip_addr_t *dnsserver) +{ + if (numdns < DNS_MAX_SERVERS) { + if (dnsserver != NULL) { + dns_servers[numdns] = (*dnsserver); + } else { + dns_servers[numdns] = *IP_ADDR_ANY; + } + } +} + +/** + * @ingroup dns + * Obtain one of the currently configured DNS server. + * + * @param numdns the index of the DNS server + * @return IP address of the indexed DNS server or "ip_addr_any" if the DNS + * server has not been configured. + */ +const ip_addr_t * +dns_getserver(u8_t numdns) +{ + if (numdns < DNS_MAX_SERVERS) { + return &dns_servers[numdns]; + } else { + return IP_ADDR_ANY; + } +} + +/** + * The DNS resolver client timer - handle retries and timeouts and should + * be called every DNS_TMR_INTERVAL milliseconds (every second by default). + */ +void +dns_tmr(void) +{ + LWIP_DEBUGF(DNS_DEBUG, ("dns_tmr: dns_check_entries\n")); + dns_check_entries(); +} + +#if DNS_LOCAL_HOSTLIST +static void +dns_init_local(void) +{ +#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC && defined(DNS_LOCAL_HOSTLIST_INIT) + size_t i; + struct local_hostlist_entry *entry; + /* Dynamic: copy entries from DNS_LOCAL_HOSTLIST_INIT to list */ + struct local_hostlist_entry local_hostlist_init[] = DNS_LOCAL_HOSTLIST_INIT; + size_t namelen; + for (i = 0; i < LWIP_ARRAYSIZE(local_hostlist_init); i++) { + struct local_hostlist_entry *init_entry = &local_hostlist_init[i]; + LWIP_ASSERT("invalid host name (NULL)", init_entry->name != NULL); + namelen = strlen(init_entry->name); + LWIP_ASSERT("namelen <= DNS_LOCAL_HOSTLIST_MAX_NAMELEN", namelen <= DNS_LOCAL_HOSTLIST_MAX_NAMELEN); + entry = (struct local_hostlist_entry *)memp_malloc(MEMP_LOCALHOSTLIST); + LWIP_ASSERT("mem-error in dns_init_local", entry != NULL); + if (entry != NULL) { + char *entry_name = (char *)entry + sizeof(struct local_hostlist_entry); + MEMCPY(entry_name, init_entry->name, namelen); + entry_name[namelen] = 0; + entry->name = entry_name; + entry->addr = init_entry->addr; + entry->next = local_hostlist_dynamic; + local_hostlist_dynamic = entry; + } + } +#endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC && defined(DNS_LOCAL_HOSTLIST_INIT) */ +} + +/** + * @ingroup dns + * Iterate the local host-list for a hostname. + * + * @param iterator_fn a function that is called for every entry in the local host-list + * @param iterator_arg 3rd argument passed to iterator_fn + * @return the number of entries in the local host-list + */ +size_t +dns_local_iterate(dns_found_callback iterator_fn, void *iterator_arg) +{ + size_t i; +#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC + struct local_hostlist_entry *entry = local_hostlist_dynamic; + i = 0; + while (entry != NULL) { + if (iterator_fn != NULL) { + iterator_fn(entry->name, &entry->addr, iterator_arg); + } + i++; + entry = entry->next; + } +#else /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ + for (i = 0; i < LWIP_ARRAYSIZE(local_hostlist_static); i++) { + if (iterator_fn != NULL) { + iterator_fn(local_hostlist_static[i].name, &local_hostlist_static[i].addr, iterator_arg); + } + } +#endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ + return i; +} + +/** + * @ingroup dns + * Scans the local host-list for a hostname. + * + * @param hostname Hostname to look for in the local host-list + * @param addr the first IP address for the hostname in the local host-list or + * IPADDR_NONE if not found. + * @param dns_addrtype - LWIP_DNS_ADDRTYPE_IPV4_IPV6: try to resolve IPv4 (ATTENTION: no fallback here!) + * - LWIP_DNS_ADDRTYPE_IPV6_IPV4: try to resolve IPv6 (ATTENTION: no fallback here!) + * - LWIP_DNS_ADDRTYPE_IPV4: try to resolve IPv4 only + * - LWIP_DNS_ADDRTYPE_IPV6: try to resolve IPv6 only + * @return ERR_OK if found, ERR_ARG if not found + */ +err_t +dns_local_lookup(const char *hostname, ip_addr_t *addr, u8_t dns_addrtype) +{ + LWIP_UNUSED_ARG(dns_addrtype); + return dns_lookup_local(hostname, addr LWIP_DNS_ADDRTYPE_ARG(dns_addrtype)); +} + +/* Internal implementation for dns_local_lookup and dns_lookup */ +static err_t +dns_lookup_local(const char *hostname, ip_addr_t *addr LWIP_DNS_ADDRTYPE_ARG(u8_t dns_addrtype)) +{ +#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC + struct local_hostlist_entry *entry = local_hostlist_dynamic; + while (entry != NULL) { + if ((lwip_stricmp(entry->name, hostname) == 0) && + LWIP_DNS_ADDRTYPE_MATCH_IP(dns_addrtype, entry->addr)) { + if (addr) { + ip_addr_copy(*addr, entry->addr); + } + return ERR_OK; + } + entry = entry->next; + } +#else /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ + size_t i; + for (i = 0; i < LWIP_ARRAYSIZE(local_hostlist_static); i++) { + if ((lwip_stricmp(local_hostlist_static[i].name, hostname) == 0) && + LWIP_DNS_ADDRTYPE_MATCH_IP(dns_addrtype, local_hostlist_static[i].addr)) { + if (addr) { + ip_addr_copy(*addr, local_hostlist_static[i].addr); + } + return ERR_OK; + } + } +#endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ + return ERR_ARG; +} + +#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC +/** + * @ingroup dns + * Remove all entries from the local host-list for a specific hostname + * and/or IP address + * + * @param hostname hostname for which entries shall be removed from the local + * host-list + * @param addr address for which entries shall be removed from the local host-list + * @return the number of removed entries + */ +int +dns_local_removehost(const char *hostname, const ip_addr_t *addr) +{ + int removed = 0; + struct local_hostlist_entry *entry = local_hostlist_dynamic; + struct local_hostlist_entry *last_entry = NULL; + while (entry != NULL) { + if (((hostname == NULL) || !lwip_stricmp(entry->name, hostname)) && + ((addr == NULL) || ip_addr_cmp(&entry->addr, addr))) { + struct local_hostlist_entry *free_entry; + if (last_entry != NULL) { + last_entry->next = entry->next; + } else { + local_hostlist_dynamic = entry->next; + } + free_entry = entry; + entry = entry->next; + memp_free(MEMP_LOCALHOSTLIST, free_entry); + removed++; + } else { + last_entry = entry; + entry = entry->next; + } + } + return removed; +} + +/** + * @ingroup dns + * Add a hostname/IP address pair to the local host-list. + * Duplicates are not checked. + * + * @param hostname hostname of the new entry + * @param addr IP address of the new entry + * @return ERR_OK if succeeded or ERR_MEM on memory error + */ +err_t +dns_local_addhost(const char *hostname, const ip_addr_t *addr) +{ + struct local_hostlist_entry *entry; + size_t namelen; + char *entry_name; + LWIP_ASSERT("invalid host name (NULL)", hostname != NULL); + namelen = strlen(hostname); + LWIP_ASSERT("namelen <= DNS_LOCAL_HOSTLIST_MAX_NAMELEN", namelen <= DNS_LOCAL_HOSTLIST_MAX_NAMELEN); + entry = (struct local_hostlist_entry *)memp_malloc(MEMP_LOCALHOSTLIST); + if (entry == NULL) { + return ERR_MEM; + } + entry_name = (char *)entry + sizeof(struct local_hostlist_entry); + MEMCPY(entry_name, hostname, namelen); + entry_name[namelen] = 0; + entry->name = entry_name; + ip_addr_copy(entry->addr, *addr); + entry->next = local_hostlist_dynamic; + local_hostlist_dynamic = entry; + return ERR_OK; +} +#endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC*/ +#endif /* DNS_LOCAL_HOSTLIST */ + +/** + * @ingroup dns + * Look up a hostname in the array of known hostnames. + * + * @note This function only looks in the internal array of known + * hostnames, it does not send out a query for the hostname if none + * was found. The function dns_enqueue() can be used to send a query + * for a hostname. + * + * @param name the hostname to look up + * @param addr the hostname's IP address, as u32_t (instead of ip_addr_t to + * better check for failure: != IPADDR_NONE) or IPADDR_NONE if the hostname + * was not found in the cached dns_table. + * @return ERR_OK if found, ERR_ARG if not found + */ +static err_t +dns_lookup(const char *name, ip_addr_t *addr LWIP_DNS_ADDRTYPE_ARG(u8_t dns_addrtype)) +{ + u8_t i; +#if DNS_LOCAL_HOSTLIST + if (dns_lookup_local(name, addr LWIP_DNS_ADDRTYPE_ARG(dns_addrtype)) == ERR_OK) { + return ERR_OK; + } +#endif /* DNS_LOCAL_HOSTLIST */ +#ifdef DNS_LOOKUP_LOCAL_EXTERN + if (DNS_LOOKUP_LOCAL_EXTERN(name, addr, LWIP_DNS_ADDRTYPE_ARG_OR_ZERO(dns_addrtype)) == ERR_OK) { + return ERR_OK; + } +#endif /* DNS_LOOKUP_LOCAL_EXTERN */ + + /* Walk through name list, return entry if found. If not, return NULL. */ + for (i = 0; i < DNS_TABLE_SIZE; ++i) { + if ((dns_table[i].state == DNS_STATE_DONE) && + (lwip_strnicmp(name, dns_table[i].name, sizeof(dns_table[i].name)) == 0) && + LWIP_DNS_ADDRTYPE_MATCH_IP(dns_addrtype, dns_table[i].ipaddr)) { + LWIP_DEBUGF(DNS_DEBUG, ("dns_lookup: \"%s\": found = ", name)); + ip_addr_debug_print_val(DNS_DEBUG, dns_table[i].ipaddr); + LWIP_DEBUGF(DNS_DEBUG, ("\n")); + if (addr) { + ip_addr_copy(*addr, dns_table[i].ipaddr); + } + return ERR_OK; + } + } + + return ERR_ARG; +} + +/** + * Compare the "dotted" name "query" with the encoded name "response" + * to make sure an answer from the DNS server matches the current dns_table + * entry (otherwise, answers might arrive late for hostname not on the list + * any more). + * + * For now, this function compares case-insensitive to cope with all kinds of + * servers. This also means that "dns 0x20 bit encoding" must be checked + * externally, if we want to implement it. + * Currently, the request is sent exactly as passed in by he user request. + * + * @param query hostname (not encoded) from the dns_table + * @param p pbuf containing the encoded hostname in the DNS response + * @param start_offset offset into p where the name starts + * @return 0xFFFF: names differ, other: names equal -> offset behind name + */ +static u16_t +dns_compare_name(const char *query, struct pbuf *p, u16_t start_offset) +{ + int n; + u16_t response_offset = start_offset; + + do { + n = pbuf_try_get_at(p, response_offset); + if ((n < 0) || (response_offset == 0xFFFF)) { + /* error or overflow */ + return 0xFFFF; + } + response_offset++; + /** @see RFC 1035 - 4.1.4. Message compression */ + if ((n & 0xc0) == 0xc0) { + /* Compressed name: cannot be equal since we don't send them */ + return 0xFFFF; + } else { + /* Not compressed name */ + while (n > 0) { + int c = pbuf_try_get_at(p, response_offset); + if (c < 0) { + return 0xFFFF; + } + if (lwip_tolower((*query)) != lwip_tolower((u8_t)c)) { + return 0xFFFF; + } + if (response_offset == 0xFFFF) { + /* would overflow */ + return 0xFFFF; + } + response_offset++; + ++query; + --n; + } + ++query; + } + n = pbuf_try_get_at(p, response_offset); + if (n < 0) { + return 0xFFFF; + } + } while (n != 0); + + if (response_offset == 0xFFFF) { + /* would overflow */ + return 0xFFFF; + } + return (u16_t)(response_offset + 1); +} + +/** + * Walk through a compact encoded DNS name and return the end of the name. + * + * @param p pbuf containing the name + * @param query_idx start index into p pointing to encoded DNS name in the DNS server response + * @return index to end of the name + */ +static u16_t +dns_skip_name(struct pbuf *p, u16_t query_idx) +{ + int n; + u16_t offset = query_idx; + + do { + n = pbuf_try_get_at(p, offset++); + if ((n < 0) || (offset == 0)) { + return 0xFFFF; + } + /** @see RFC 1035 - 4.1.4. Message compression */ + if ((n & 0xc0) == 0xc0) { + /* Compressed name: since we only want to skip it (not check it), stop here */ + break; + } else { + /* Not compressed name */ + if (offset + n >= p->tot_len) { + return 0xFFFF; + } + offset = (u16_t)(offset + n); + } + n = pbuf_try_get_at(p, offset); + if (n < 0) { + return 0xFFFF; + } + } while (n != 0); + + if (offset == 0xFFFF) { + return 0xFFFF; + } + return (u16_t)(offset + 1); +} + +/** + * Send a DNS query packet. + * + * @param idx the DNS table entry index for which to send a request + * @return ERR_OK if packet is sent; an err_t indicating the problem otherwise + */ +static err_t +dns_send(u8_t idx) +{ + err_t err; + struct dns_hdr hdr; + struct dns_query qry; + struct pbuf *p; + u16_t query_idx, copy_len; + const char *hostname, *hostname_part; + u8_t n; + u8_t pcb_idx; + struct dns_table_entry *entry = &dns_table[idx]; + + LWIP_DEBUGF(DNS_DEBUG, ("dns_send: dns_servers[%"U16_F"] \"%s\": request\n", + (u16_t)(entry->server_idx), entry->name)); + LWIP_ASSERT("dns server out of array", entry->server_idx < DNS_MAX_SERVERS); + if (ip_addr_isany_val(dns_servers[entry->server_idx]) +#if LWIP_DNS_SUPPORT_MDNS_QUERIES + && !entry->is_mdns +#endif + ) { + /* DNS server not valid anymore, e.g. PPP netif has been shut down */ + /* call specified callback function if provided */ + dns_call_found(idx, NULL); + /* flush this entry */ + entry->state = DNS_STATE_UNUSED; + return ERR_OK; + } + + /* if here, we have either a new query or a retry on a previous query to process */ + p = pbuf_alloc(PBUF_TRANSPORT, (u16_t)(SIZEOF_DNS_HDR + strlen(entry->name) + 2 + + SIZEOF_DNS_QUERY), PBUF_RAM); + if (p != NULL) { + const ip_addr_t *dst; + u16_t dst_port; + /* fill dns header */ + memset(&hdr, 0, SIZEOF_DNS_HDR); + hdr.id = lwip_htons(entry->txid); + hdr.flags1 = DNS_FLAG1_RD; + hdr.numquestions = PP_HTONS(1); + pbuf_take(p, &hdr, SIZEOF_DNS_HDR); + hostname = entry->name; + --hostname; + + /* convert hostname into suitable query format. */ + query_idx = SIZEOF_DNS_HDR; + do { + ++hostname; + hostname_part = hostname; + for (n = 0; *hostname != '.' && *hostname != 0; ++hostname) { + ++n; + } + copy_len = (u16_t)(hostname - hostname_part); + if (query_idx + n + 1 > 0xFFFF) { + /* u16_t overflow */ + goto overflow_return; + } + pbuf_put_at(p, query_idx, n); + pbuf_take_at(p, hostname_part, copy_len, (u16_t)(query_idx + 1)); + query_idx = (u16_t)(query_idx + n + 1); + } while (*hostname != 0); + pbuf_put_at(p, query_idx, 0); + query_idx++; + + /* fill dns query */ + if (LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype)) { + qry.type = PP_HTONS(DNS_RRTYPE_AAAA); + } else { + qry.type = PP_HTONS(DNS_RRTYPE_A); + } + qry.cls = PP_HTONS(DNS_RRCLASS_IN); + pbuf_take_at(p, &qry, SIZEOF_DNS_QUERY, query_idx); + +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0) + pcb_idx = entry->pcb_idx; +#else + pcb_idx = 0; +#endif + /* send dns packet */ + LWIP_DEBUGF(DNS_DEBUG, ("sending DNS request ID %d for name \"%s\" to server %d\r\n", + entry->txid, entry->name, entry->server_idx)); +#if LWIP_DNS_SUPPORT_MDNS_QUERIES + if (entry->is_mdns) { + dst_port = DNS_MQUERY_PORT; +#if LWIP_IPV6 + if (LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype)) { + dst = &dns_mquery_v6group; + } +#endif +#if LWIP_IPV4 && LWIP_IPV6 + else +#endif +#if LWIP_IPV4 + { + dst = &dns_mquery_v4group; + } +#endif + } else +#endif /* LWIP_DNS_SUPPORT_MDNS_QUERIES */ + { + dst_port = DNS_SERVER_PORT; + dst = &dns_servers[entry->server_idx]; + } + err = udp_sendto(dns_pcbs[pcb_idx], p, dst, dst_port); + + /* free pbuf */ + pbuf_free(p); + } else { + err = ERR_MEM; + } + + return err; +overflow_return: + pbuf_free(p); + return ERR_VAL; +} + +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0) +static struct udp_pcb * +dns_alloc_random_port(void) +{ + err_t err; + struct udp_pcb *pcb; + + pcb = udp_new_ip_type(IPADDR_TYPE_ANY); + if (pcb == NULL) { + /* out of memory, have to reuse an existing pcb */ + return NULL; + } + do { + u16_t port = (u16_t)DNS_RAND_TXID(); + if (DNS_PORT_ALLOWED(port)) { + err = udp_bind(pcb, IP_ANY_TYPE, port); + } else { + /* this port is not allowed, try again */ + err = ERR_USE; + } + } while (err == ERR_USE); + if (err != ERR_OK) { + udp_remove(pcb); + return NULL; + } + udp_recv(pcb, dns_recv, NULL); + return pcb; +} + +/** + * dns_alloc_pcb() - allocates a new pcb (or reuses an existing one) to be used + * for sending a request + * + * @return an index into dns_pcbs + */ +static u8_t +dns_alloc_pcb(void) +{ + u8_t i; + u8_t idx; + + for (i = 0; i < DNS_MAX_SOURCE_PORTS; i++) { + if (dns_pcbs[i] == NULL) { + break; + } + } + if (i < DNS_MAX_SOURCE_PORTS) { + dns_pcbs[i] = dns_alloc_random_port(); + if (dns_pcbs[i] != NULL) { + /* succeeded */ + dns_last_pcb_idx = i; + return i; + } + } + /* if we come here, creating a new UDP pcb failed, so we have to use + an already existing one (so overflow is no issue) */ + for (i = 0, idx = (u8_t)(dns_last_pcb_idx + 1); i < DNS_MAX_SOURCE_PORTS; i++, idx++) { + if (idx >= DNS_MAX_SOURCE_PORTS) { + idx = 0; + } + if (dns_pcbs[idx] != NULL) { + dns_last_pcb_idx = idx; + return idx; + } + } + return DNS_MAX_SOURCE_PORTS; +} +#endif /* ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0) */ + +/** + * dns_call_found() - call the found callback and check if there are duplicate + * entries for the given hostname. If there are any, their found callback will + * be called and they will be removed. + * + * @param idx dns table index of the entry that is resolved or removed + * @param addr IP address for the hostname (or NULL on error or memory shortage) + */ +static void +dns_call_found(u8_t idx, ip_addr_t *addr) +{ +#if ((LWIP_DNS_SECURE & (LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING | LWIP_DNS_SECURE_RAND_SRC_PORT)) != 0) + u8_t i; +#endif + +#if LWIP_IPV4 && LWIP_IPV6 + if (addr != NULL) { + /* check that address type matches the request and adapt the table entry */ + if (IP_IS_V6_VAL(*addr)) { + LWIP_ASSERT("invalid response", LWIP_DNS_ADDRTYPE_IS_IPV6(dns_table[idx].reqaddrtype)); + dns_table[idx].reqaddrtype = LWIP_DNS_ADDRTYPE_IPV6; + } else { + LWIP_ASSERT("invalid response", !LWIP_DNS_ADDRTYPE_IS_IPV6(dns_table[idx].reqaddrtype)); + dns_table[idx].reqaddrtype = LWIP_DNS_ADDRTYPE_IPV4; + } + } +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0) + for (i = 0; i < DNS_MAX_REQUESTS; i++) { + if (dns_requests[i].found && (dns_requests[i].dns_table_idx == idx)) { + (*dns_requests[i].found)(dns_table[idx].name, addr, dns_requests[i].arg); + /* flush this entry */ + dns_requests[i].found = NULL; + } + } +#else + if (dns_requests[idx].found) { + (*dns_requests[idx].found)(dns_table[idx].name, addr, dns_requests[idx].arg); + } + dns_requests[idx].found = NULL; +#endif +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0) + /* close the pcb used unless other request are using it */ + for (i = 0; i < DNS_MAX_REQUESTS; i++) { + if (i == idx) { + continue; /* only check other requests */ + } + if (dns_table[i].state == DNS_STATE_ASKING) { + if (dns_table[i].pcb_idx == dns_table[idx].pcb_idx) { + /* another request is still using the same pcb */ + dns_table[idx].pcb_idx = DNS_MAX_SOURCE_PORTS; + break; + } + } + } + if (dns_table[idx].pcb_idx < DNS_MAX_SOURCE_PORTS) { + /* if we come here, the pcb is not used any more and can be removed */ + udp_remove(dns_pcbs[dns_table[idx].pcb_idx]); + dns_pcbs[dns_table[idx].pcb_idx] = NULL; + dns_table[idx].pcb_idx = DNS_MAX_SOURCE_PORTS; + } +#endif +} + +/* Create a query transmission ID that is unique for all outstanding queries */ +static u16_t +dns_create_txid(void) +{ + u16_t txid; + u8_t i; + +again: + txid = (u16_t)DNS_RAND_TXID(); + + /* check whether the ID is unique */ + for (i = 0; i < DNS_TABLE_SIZE; i++) { + if ((dns_table[i].state == DNS_STATE_ASKING) && + (dns_table[i].txid == txid)) { + /* ID already used by another pending query */ + goto again; + } + } + + return txid; +} + +/** + * Check whether there are other backup DNS servers available to try + */ +static u8_t +dns_backupserver_available(struct dns_table_entry *pentry) +{ + u8_t ret = 0; + + if (pentry) { + if ((pentry->server_idx + 1 < DNS_MAX_SERVERS) && !ip_addr_isany_val(dns_servers[pentry->server_idx + 1])) { + ret = 1; + } + } + + return ret; +} + +/** + * dns_check_entry() - see if entry has not yet been queried and, if so, sends out a query. + * Check an entry in the dns_table: + * - send out query for new entries + * - retry old pending entries on timeout (also with different servers) + * - remove completed entries from the table if their TTL has expired + * + * @param i index of the dns_table entry to check + */ +static void +dns_check_entry(u8_t i) +{ + err_t err; + struct dns_table_entry *entry = &dns_table[i]; + + LWIP_ASSERT("array index out of bounds", i < DNS_TABLE_SIZE); + + switch (entry->state) { + case DNS_STATE_NEW: + /* initialize new entry */ + entry->txid = dns_create_txid(); + entry->state = DNS_STATE_ASKING; + entry->server_idx = 0; + entry->tmr = 1; + entry->retries = 0; + + /* send DNS packet for this entry */ + err = dns_send(i); + if (err != ERR_OK) { + LWIP_DEBUGF(DNS_DEBUG | LWIP_DBG_LEVEL_WARNING, + ("dns_send returned error: %s\n", lwip_strerr(err))); + } + break; + case DNS_STATE_ASKING: + if (--entry->tmr == 0) { + if (++entry->retries == DNS_MAX_RETRIES) { + if (dns_backupserver_available(entry) +#if LWIP_DNS_SUPPORT_MDNS_QUERIES + && !entry->is_mdns +#endif /* LWIP_DNS_SUPPORT_MDNS_QUERIES */ + ) { + /* change of server */ + entry->server_idx++; + entry->tmr = 1; + entry->retries = 0; + } else { + LWIP_DEBUGF(DNS_DEBUG, ("dns_check_entry: \"%s\": timeout\n", entry->name)); + /* call specified callback function if provided */ + dns_call_found(i, NULL); + /* flush this entry */ + entry->state = DNS_STATE_UNUSED; + break; + } + } else { + /* wait longer for the next retry */ + entry->tmr = entry->retries; + } + + /* send DNS packet for this entry */ + err = dns_send(i); + if (err != ERR_OK) { + LWIP_DEBUGF(DNS_DEBUG | LWIP_DBG_LEVEL_WARNING, + ("dns_send returned error: %s\n", lwip_strerr(err))); + } + } + break; + case DNS_STATE_DONE: + /* if the time to live is nul */ + if ((entry->ttl == 0) || (--entry->ttl == 0)) { + LWIP_DEBUGF(DNS_DEBUG, ("dns_check_entry: \"%s\": flush\n", entry->name)); + /* flush this entry, there cannot be any related pending entries in this state */ + entry->state = DNS_STATE_UNUSED; + } + break; + case DNS_STATE_UNUSED: + /* nothing to do */ + break; + default: + LWIP_ASSERT("unknown dns_table entry state:", 0); + break; + } +} + +/** + * Call dns_check_entry for each entry in dns_table - check all entries. + */ +static void +dns_check_entries(void) +{ + u8_t i; + + for (i = 0; i < DNS_TABLE_SIZE; ++i) { + dns_check_entry(i); + } +} + +/** + * Save TTL and call dns_call_found for correct response. + */ +static void +dns_correct_response(u8_t idx, u32_t ttl) +{ + struct dns_table_entry *entry = &dns_table[idx]; + + entry->state = DNS_STATE_DONE; + + LWIP_DEBUGF(DNS_DEBUG, ("dns_recv: \"%s\": response = ", entry->name)); + ip_addr_debug_print_val(DNS_DEBUG, entry->ipaddr); + LWIP_DEBUGF(DNS_DEBUG, ("\n")); + + /* read the answer resource record's TTL, and maximize it if needed */ + entry->ttl = ttl; + if (entry->ttl > DNS_MAX_TTL) { + entry->ttl = DNS_MAX_TTL; + } + dns_call_found(idx, &entry->ipaddr); + + if (entry->ttl == 0) { + /* RFC 883, page 29: "Zero values are + interpreted to mean that the RR can only be used for the + transaction in progress, and should not be cached." + -> flush this entry now */ + /* entry reused during callback? */ + if (entry->state == DNS_STATE_DONE) { + entry->state = DNS_STATE_UNUSED; + } + } +} + +/** + * Receive input function for DNS response packets arriving for the dns UDP pcb. + */ +static void +dns_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port) +{ + u8_t i; + u16_t txid; + u16_t res_idx; + struct dns_hdr hdr; + struct dns_answer ans; + struct dns_query qry; + u16_t nquestions, nanswers; + + LWIP_UNUSED_ARG(arg); + LWIP_UNUSED_ARG(pcb); + LWIP_UNUSED_ARG(port); + + /* is the dns message big enough ? */ + if (p->tot_len < (SIZEOF_DNS_HDR + SIZEOF_DNS_QUERY)) { + LWIP_DEBUGF(DNS_DEBUG, ("dns_recv: pbuf too small\n")); + /* free pbuf and return */ + goto ignore_packet; + } + + /* copy dns payload inside static buffer for processing */ + if (pbuf_copy_partial(p, &hdr, SIZEOF_DNS_HDR, 0) == SIZEOF_DNS_HDR) { + /* Match the ID in the DNS header with the name table. */ + txid = lwip_htons(hdr.id); + for (i = 0; i < DNS_TABLE_SIZE; i++) { + struct dns_table_entry *entry = &dns_table[i]; + if ((entry->state == DNS_STATE_ASKING) && + (entry->txid == txid)) { + + /* We only care about the question(s) and the answers. The authrr + and the extrarr are simply discarded. */ + nquestions = lwip_htons(hdr.numquestions); + nanswers = lwip_htons(hdr.numanswers); + + /* Check for correct response. */ + if ((hdr.flags1 & DNS_FLAG1_RESPONSE) == 0) { + LWIP_DEBUGF(DNS_DEBUG, ("dns_recv: \"%s\": not a response\n", entry->name)); + goto ignore_packet; /* ignore this packet */ + } + if (nquestions != 1) { + LWIP_DEBUGF(DNS_DEBUG, ("dns_recv: \"%s\": response not match to query\n", entry->name)); + goto ignore_packet; /* ignore this packet */ + } + +#if LWIP_DNS_SUPPORT_MDNS_QUERIES + if (!entry->is_mdns) +#endif /* LWIP_DNS_SUPPORT_MDNS_QUERIES */ + { + /* Check whether response comes from the same network address to which the + question was sent. (RFC 5452) */ + if (!ip_addr_cmp(addr, &dns_servers[entry->server_idx])) { + goto ignore_packet; /* ignore this packet */ + } + } + + /* Check if the name in the "question" part match with the name in the entry and + skip it if equal. */ + res_idx = dns_compare_name(entry->name, p, SIZEOF_DNS_HDR); + if (res_idx == 0xFFFF) { + LWIP_DEBUGF(DNS_DEBUG, ("dns_recv: \"%s\": response not match to query\n", entry->name)); + goto ignore_packet; /* ignore this packet */ + } + + /* check if "question" part matches the request */ + if (pbuf_copy_partial(p, &qry, SIZEOF_DNS_QUERY, res_idx) != SIZEOF_DNS_QUERY) { + goto ignore_packet; /* ignore this packet */ + } + if ((qry.cls != PP_HTONS(DNS_RRCLASS_IN)) || + (LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype) && (qry.type != PP_HTONS(DNS_RRTYPE_AAAA))) || + (!LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype) && (qry.type != PP_HTONS(DNS_RRTYPE_A)))) { + LWIP_DEBUGF(DNS_DEBUG, ("dns_recv: \"%s\": response not match to query\n", entry->name)); + goto ignore_packet; /* ignore this packet */ + } + /* skip the rest of the "question" part */ + if (res_idx + SIZEOF_DNS_QUERY > 0xFFFF) { + goto ignore_packet; + } + res_idx = (u16_t)(res_idx + SIZEOF_DNS_QUERY); + + /* Check for error. If so, call callback to inform. */ + if (hdr.flags2 & DNS_FLAG2_ERR_MASK) { + LWIP_DEBUGF(DNS_DEBUG, ("dns_recv: \"%s\": error in flags\n", entry->name)); + + /* if there is another backup DNS server to try + * then don't stop the DNS request + */ + if (dns_backupserver_available(entry)) { + /* avoid retrying the same server */ + entry->retries = DNS_MAX_RETRIES-1; + entry->tmr = 1; + + /* contact next available server for this entry */ + dns_check_entry(i); + + goto ignore_packet; + } + } else { + while ((nanswers > 0) && (res_idx < p->tot_len)) { + /* skip answer resource record's host name */ + res_idx = dns_skip_name(p, res_idx); + if (res_idx == 0xFFFF) { + goto ignore_packet; /* ignore this packet */ + } + + /* Check for IP address type and Internet class. Others are discarded. */ + if (pbuf_copy_partial(p, &ans, SIZEOF_DNS_ANSWER, res_idx) != SIZEOF_DNS_ANSWER) { + goto ignore_packet; /* ignore this packet */ + } + if (res_idx + SIZEOF_DNS_ANSWER > 0xFFFF) { + goto ignore_packet; + } + res_idx = (u16_t)(res_idx + SIZEOF_DNS_ANSWER); + + if (ans.cls == PP_HTONS(DNS_RRCLASS_IN)) { +#if LWIP_IPV4 + if ((ans.type == PP_HTONS(DNS_RRTYPE_A)) && (ans.len == PP_HTONS(sizeof(ip4_addr_t)))) { +#if LWIP_IPV4 && LWIP_IPV6 + if (!LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype)) +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + { + ip4_addr_t ip4addr; + /* read the IP address after answer resource record's header */ + if (pbuf_copy_partial(p, &ip4addr, sizeof(ip4_addr_t), res_idx) != sizeof(ip4_addr_t)) { + goto ignore_packet; /* ignore this packet */ + } + ip_addr_copy_from_ip4(dns_table[i].ipaddr, ip4addr); + pbuf_free(p); + /* handle correct response */ + dns_correct_response(i, lwip_ntohl(ans.ttl)); + return; + } + } +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 + if ((ans.type == PP_HTONS(DNS_RRTYPE_AAAA)) && (ans.len == PP_HTONS(sizeof(ip6_addr_p_t)))) { +#if LWIP_IPV4 && LWIP_IPV6 + if (LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype)) +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + { + ip6_addr_p_t ip6addr; + /* read the IP address after answer resource record's header */ + if (pbuf_copy_partial(p, &ip6addr, sizeof(ip6_addr_p_t), res_idx) != sizeof(ip6_addr_p_t)) { + goto ignore_packet; /* ignore this packet */ + } + /* @todo: scope ip6addr? Might be required for link-local addresses at least? */ + ip_addr_copy_from_ip6_packed(dns_table[i].ipaddr, ip6addr); + pbuf_free(p); + /* handle correct response */ + dns_correct_response(i, lwip_ntohl(ans.ttl)); + return; + } + } +#endif /* LWIP_IPV6 */ + } + /* skip this answer */ + if ((int)(res_idx + lwip_htons(ans.len)) > 0xFFFF) { + goto ignore_packet; /* ignore this packet */ + } + res_idx = (u16_t)(res_idx + lwip_htons(ans.len)); + --nanswers; + } +#if LWIP_IPV4 && LWIP_IPV6 + if ((entry->reqaddrtype == LWIP_DNS_ADDRTYPE_IPV4_IPV6) || + (entry->reqaddrtype == LWIP_DNS_ADDRTYPE_IPV6_IPV4)) { + if (entry->reqaddrtype == LWIP_DNS_ADDRTYPE_IPV4_IPV6) { + /* IPv4 failed, try IPv6 */ + dns_table[i].reqaddrtype = LWIP_DNS_ADDRTYPE_IPV6; + } else { + /* IPv6 failed, try IPv4 */ + dns_table[i].reqaddrtype = LWIP_DNS_ADDRTYPE_IPV4; + } + pbuf_free(p); + dns_table[i].state = DNS_STATE_NEW; + dns_check_entry(i); + return; + } +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + LWIP_DEBUGF(DNS_DEBUG, ("dns_recv: \"%s\": error in response\n", entry->name)); + } + /* call callback to indicate error, clean up memory and return */ + pbuf_free(p); + dns_call_found(i, NULL); + dns_table[i].state = DNS_STATE_UNUSED; + return; + } + } + } + +ignore_packet: + /* deallocate memory and return */ + pbuf_free(p); + return; +} + +/** + * Queues a new hostname to resolve and sends out a DNS query for that hostname + * + * @param name the hostname that is to be queried + * @param hostnamelen length of the hostname + * @param found a callback function to be called on success, failure or timeout + * @param callback_arg argument to pass to the callback function + * @return err_t return code. + */ +static err_t +dns_enqueue(const char *name, size_t hostnamelen, dns_found_callback found, + void *callback_arg LWIP_DNS_ADDRTYPE_ARG(u8_t dns_addrtype) LWIP_DNS_ISMDNS_ARG(u8_t is_mdns)) +{ + u8_t i; + u8_t lseq, lseqi; + struct dns_table_entry *entry = NULL; + size_t namelen; + struct dns_req_entry *req; + +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0) + u8_t r; + /* check for duplicate entries */ + for (i = 0; i < DNS_TABLE_SIZE; i++) { + if ((dns_table[i].state == DNS_STATE_ASKING) && + (lwip_strnicmp(name, dns_table[i].name, sizeof(dns_table[i].name)) == 0)) { +#if LWIP_IPV4 && LWIP_IPV6 + if (dns_table[i].reqaddrtype != dns_addrtype) { + /* requested address types don't match + this can lead to 2 concurrent requests, but mixing the address types + for the same host should not be that common */ + continue; + } +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + /* this is a duplicate entry, find a free request entry */ + for (r = 0; r < DNS_MAX_REQUESTS; r++) { + if (dns_requests[r].found == 0) { + dns_requests[r].found = found; + dns_requests[r].arg = callback_arg; + dns_requests[r].dns_table_idx = i; + LWIP_DNS_SET_ADDRTYPE(dns_requests[r].reqaddrtype, dns_addrtype); + LWIP_DEBUGF(DNS_DEBUG, ("dns_enqueue: \"%s\": duplicate request\n", name)); + return ERR_INPROGRESS; + } + } + } + } + /* no duplicate entries found */ +#endif + + /* search an unused entry, or the oldest one */ + lseq = 0; + lseqi = DNS_TABLE_SIZE; + for (i = 0; i < DNS_TABLE_SIZE; ++i) { + entry = &dns_table[i]; + /* is it an unused entry ? */ + if (entry->state == DNS_STATE_UNUSED) { + break; + } + /* check if this is the oldest completed entry */ + if (entry->state == DNS_STATE_DONE) { + u8_t age = (u8_t)(dns_seqno - entry->seqno); + if (age > lseq) { + lseq = age; + lseqi = i; + } + } + } + + /* if we don't have found an unused entry, use the oldest completed one */ + if (i == DNS_TABLE_SIZE) { + if ((lseqi >= DNS_TABLE_SIZE) || (dns_table[lseqi].state != DNS_STATE_DONE)) { + /* no entry can be used now, table is full */ + LWIP_DEBUGF(DNS_DEBUG, ("dns_enqueue: \"%s\": DNS entries table is full\n", name)); + return ERR_MEM; + } else { + /* use the oldest completed one */ + i = lseqi; + entry = &dns_table[i]; + } + } + +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0) + /* find a free request entry */ + req = NULL; + for (r = 0; r < DNS_MAX_REQUESTS; r++) { + if (dns_requests[r].found == NULL) { + req = &dns_requests[r]; + break; + } + } + if (req == NULL) { + /* no request entry can be used now, table is full */ + LWIP_DEBUGF(DNS_DEBUG, ("dns_enqueue: \"%s\": DNS request entries table is full\n", name)); + return ERR_MEM; + } + req->dns_table_idx = i; +#else + /* in this configuration, the entry index is the same as the request index */ + req = &dns_requests[i]; +#endif + + /* use this entry */ + LWIP_DEBUGF(DNS_DEBUG, ("dns_enqueue: \"%s\": use DNS entry %"U16_F"\n", name, (u16_t)(i))); + + /* fill the entry */ + entry->state = DNS_STATE_NEW; + entry->seqno = dns_seqno; + LWIP_DNS_SET_ADDRTYPE(entry->reqaddrtype, dns_addrtype); + LWIP_DNS_SET_ADDRTYPE(req->reqaddrtype, dns_addrtype); + req->found = found; + req->arg = callback_arg; + namelen = LWIP_MIN(hostnamelen, DNS_MAX_NAME_LENGTH - 1); + MEMCPY(entry->name, name, namelen); + entry->name[namelen] = 0; + +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0) + entry->pcb_idx = dns_alloc_pcb(); + if (entry->pcb_idx >= DNS_MAX_SOURCE_PORTS) { + /* failed to get a UDP pcb */ + LWIP_DEBUGF(DNS_DEBUG, ("dns_enqueue: \"%s\": failed to allocate a pcb\n", name)); + entry->state = DNS_STATE_UNUSED; + req->found = NULL; + return ERR_MEM; + } + LWIP_DEBUGF(DNS_DEBUG, ("dns_enqueue: \"%s\": use DNS pcb %"U16_F"\n", name, (u16_t)(entry->pcb_idx))); +#endif + +#if LWIP_DNS_SUPPORT_MDNS_QUERIES + entry->is_mdns = is_mdns; +#endif + + dns_seqno++; + + /* force to send query without waiting timer */ + dns_check_entry(i); + + /* dns query is enqueued */ + return ERR_INPROGRESS; +} + +/** + * @ingroup dns + * Resolve a hostname (string) into an IP address. + * NON-BLOCKING callback version for use with raw API!!! + * + * Returns immediately with one of err_t return codes: + * - ERR_OK if hostname is a valid IP address string or the host + * name is already in the local names table. + * - ERR_INPROGRESS enqueue a request to be sent to the DNS server + * for resolution if no errors are present. + * - ERR_ARG: dns client not initialized or invalid hostname + * + * @param hostname the hostname that is to be queried + * @param addr pointer to a ip_addr_t where to store the address if it is already + * cached in the dns_table (only valid if ERR_OK is returned!) + * @param found a callback function to be called on success, failure or timeout (only if + * ERR_INPROGRESS is returned!) + * @param callback_arg argument to pass to the callback function + * @return a err_t return code. + */ +err_t +dns_gethostbyname(const char *hostname, ip_addr_t *addr, dns_found_callback found, + void *callback_arg) +{ + return dns_gethostbyname_addrtype(hostname, addr, found, callback_arg, LWIP_DNS_ADDRTYPE_DEFAULT); +} + +/** + * @ingroup dns + * Like dns_gethostbyname, but returned address type can be controlled: + * @param hostname the hostname that is to be queried + * @param addr pointer to a ip_addr_t where to store the address if it is already + * cached in the dns_table (only valid if ERR_OK is returned!) + * @param found a callback function to be called on success, failure or timeout (only if + * ERR_INPROGRESS is returned!) + * @param callback_arg argument to pass to the callback function + * @param dns_addrtype - LWIP_DNS_ADDRTYPE_IPV4_IPV6: try to resolve IPv4 first, try IPv6 if IPv4 fails only + * - LWIP_DNS_ADDRTYPE_IPV6_IPV4: try to resolve IPv6 first, try IPv4 if IPv6 fails only + * - LWIP_DNS_ADDRTYPE_IPV4: try to resolve IPv4 only + * - LWIP_DNS_ADDRTYPE_IPV6: try to resolve IPv6 only + */ +err_t +dns_gethostbyname_addrtype(const char *hostname, ip_addr_t *addr, dns_found_callback found, + void *callback_arg, u8_t dns_addrtype) +{ + size_t hostnamelen; +#if LWIP_DNS_SUPPORT_MDNS_QUERIES + u8_t is_mdns; +#endif + /* not initialized or no valid server yet, or invalid addr pointer + * or invalid hostname or invalid hostname length */ + if ((addr == NULL) || + (!hostname) || (!hostname[0])) { + return ERR_ARG; + } +#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) == 0) + if (dns_pcbs[0] == NULL) { + return ERR_ARG; + } +#endif + hostnamelen = strlen(hostname); + if (hostnamelen >= DNS_MAX_NAME_LENGTH) { + LWIP_DEBUGF(DNS_DEBUG, ("dns_gethostbyname: name too long to resolve")); + return ERR_ARG; + } + + +#if LWIP_HAVE_LOOPIF + if (strcmp(hostname, "localhost") == 0) { + ip_addr_set_loopback(LWIP_DNS_ADDRTYPE_IS_IPV6(dns_addrtype), addr); + return ERR_OK; + } +#endif /* LWIP_HAVE_LOOPIF */ + + /* host name already in octet notation? set ip addr and return ERR_OK */ + if (ipaddr_aton(hostname, addr)) { +#if LWIP_IPV4 && LWIP_IPV6 + if ((IP_IS_V6(addr) && (dns_addrtype != LWIP_DNS_ADDRTYPE_IPV4)) || + (IP_IS_V4(addr) && (dns_addrtype != LWIP_DNS_ADDRTYPE_IPV6))) +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + { + return ERR_OK; + } + } + /* already have this address cached? */ + if (dns_lookup(hostname, addr LWIP_DNS_ADDRTYPE_ARG(dns_addrtype)) == ERR_OK) { + return ERR_OK; + } +#if LWIP_IPV4 && LWIP_IPV6 + if ((dns_addrtype == LWIP_DNS_ADDRTYPE_IPV4_IPV6) || (dns_addrtype == LWIP_DNS_ADDRTYPE_IPV6_IPV4)) { + /* fallback to 2nd IP type and try again to lookup */ + u8_t fallback; + if (dns_addrtype == LWIP_DNS_ADDRTYPE_IPV4_IPV6) { + fallback = LWIP_DNS_ADDRTYPE_IPV6; + } else { + fallback = LWIP_DNS_ADDRTYPE_IPV4; + } + if (dns_lookup(hostname, addr LWIP_DNS_ADDRTYPE_ARG(fallback)) == ERR_OK) { + return ERR_OK; + } + } +#else /* LWIP_IPV4 && LWIP_IPV6 */ + LWIP_UNUSED_ARG(dns_addrtype); +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + +#if LWIP_DNS_SUPPORT_MDNS_QUERIES + if (strstr(hostname, ".local") == &hostname[hostnamelen] - 6) { + is_mdns = 1; + } else { + is_mdns = 0; + } + + if (!is_mdns) +#endif /* LWIP_DNS_SUPPORT_MDNS_QUERIES */ + { + /* prevent calling found callback if no server is set, return error instead */ + if (ip_addr_isany_val(dns_servers[0])) { + return ERR_VAL; + } + } + + /* queue query with specified callback */ + return dns_enqueue(hostname, hostnamelen, found, callback_arg LWIP_DNS_ADDRTYPE_ARG(dns_addrtype) + LWIP_DNS_ISMDNS_ARG(is_mdns)); +} + +#endif /* LWIP_DNS */ diff --git a/Other/tun2socks/core/c/core/inet_chksum.c b/Other/tun2socks/core/c/core/inet_chksum.c new file mode 100644 index 0000000..818c68f --- /dev/null +++ b/Other/tun2socks/core/c/core/inet_chksum.c @@ -0,0 +1,608 @@ +/** + * @file + * Internet checksum functions.\n + * + * These are some reference implementations of the checksum algorithm, with the + * aim of being simple, correct and fully portable. Checksumming is the + * first thing you would want to optimize for your platform. If you create + * your own version, link it in and in your cc.h put: + * + * \#define LWIP_CHKSUM your_checksum_routine + * + * Or you can select from the implementations below by defining + * LWIP_CHKSUM_ALGORITHM to 1, 2 or 3. + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#include "lwip/inet_chksum.h" +#include "lwip/def.h" +#include "lwip/ip_addr.h" + +#include + +#ifndef LWIP_CHKSUM +# define LWIP_CHKSUM lwip_standard_chksum +# ifndef LWIP_CHKSUM_ALGORITHM +# define LWIP_CHKSUM_ALGORITHM 2 +# endif +u16_t lwip_standard_chksum(const void *dataptr, int len); +#endif +/* If none set: */ +#ifndef LWIP_CHKSUM_ALGORITHM +# define LWIP_CHKSUM_ALGORITHM 0 +#endif + +#if (LWIP_CHKSUM_ALGORITHM == 1) /* Version #1 */ +/** + * lwip checksum + * + * @param dataptr points to start of data to be summed at any boundary + * @param len length of data to be summed + * @return host order (!) lwip checksum (non-inverted Internet sum) + * + * @note accumulator size limits summable length to 64k + * @note host endianess is irrelevant (p3 RFC1071) + */ +u16_t +lwip_standard_chksum(const void *dataptr, int len) +{ + u32_t acc; + u16_t src; + const u8_t *octetptr; + + acc = 0; + /* dataptr may be at odd or even addresses */ + octetptr = (const u8_t *)dataptr; + while (len > 1) { + /* declare first octet as most significant + thus assume network order, ignoring host order */ + src = (*octetptr) << 8; + octetptr++; + /* declare second octet as least significant */ + src |= (*octetptr); + octetptr++; + acc += src; + len -= 2; + } + if (len > 0) { + /* accumulate remaining octet */ + src = (*octetptr) << 8; + acc += src; + } + /* add deferred carry bits */ + acc = (acc >> 16) + (acc & 0x0000ffffUL); + if ((acc & 0xffff0000UL) != 0) { + acc = (acc >> 16) + (acc & 0x0000ffffUL); + } + /* This maybe a little confusing: reorder sum using lwip_htons() + instead of lwip_ntohs() since it has a little less call overhead. + The caller must invert bits for Internet sum ! */ + return lwip_htons((u16_t)acc); +} +#endif + +#if (LWIP_CHKSUM_ALGORITHM == 2) /* Alternative version #2 */ +/* + * Curt McDowell + * Broadcom Corp. + * csm@broadcom.com + * + * IP checksum two bytes at a time with support for + * unaligned buffer. + * Works for len up to and including 0x20000. + * by Curt McDowell, Broadcom Corp. 12/08/2005 + * + * @param dataptr points to start of data to be summed at any boundary + * @param len length of data to be summed + * @return host order (!) lwip checksum (non-inverted Internet sum) + */ +u16_t +lwip_standard_chksum(const void *dataptr, int len) +{ + const u8_t *pb = (const u8_t *)dataptr; + const u16_t *ps; + u16_t t = 0; + u32_t sum = 0; + int odd = ((mem_ptr_t)pb & 1); + + /* Get aligned to u16_t */ + if (odd && len > 0) { + ((u8_t *)&t)[1] = *pb++; + len--; + } + + /* Add the bulk of the data */ + ps = (const u16_t *)(const void *)pb; + while (len > 1) { + sum += *ps++; + len -= 2; + } + + /* Consume left-over byte, if any */ + if (len > 0) { + ((u8_t *)&t)[0] = *(const u8_t *)ps; + } + + /* Add end bytes */ + sum += t; + + /* Fold 32-bit sum to 16 bits + calling this twice is probably faster than if statements... */ + sum = FOLD_U32T(sum); + sum = FOLD_U32T(sum); + + /* Swap if alignment was odd */ + if (odd) { + sum = SWAP_BYTES_IN_WORD(sum); + } + + return (u16_t)sum; +} +#endif + +#if (LWIP_CHKSUM_ALGORITHM == 3) /* Alternative version #3 */ +/** + * An optimized checksum routine. Basically, it uses loop-unrolling on + * the checksum loop, treating the head and tail bytes specially, whereas + * the inner loop acts on 8 bytes at a time. + * + * @arg start of buffer to be checksummed. May be an odd byte address. + * @len number of bytes in the buffer to be checksummed. + * @return host order (!) lwip checksum (non-inverted Internet sum) + * + * by Curt McDowell, Broadcom Corp. December 8th, 2005 + */ +u16_t +lwip_standard_chksum(const void *dataptr, int len) +{ + const u8_t *pb = (const u8_t *)dataptr; + const u16_t *ps; + u16_t t = 0; + const u32_t *pl; + u32_t sum = 0, tmp; + /* starts at odd byte address? */ + int odd = ((mem_ptr_t)pb & 1); + + if (odd && len > 0) { + ((u8_t *)&t)[1] = *pb++; + len--; + } + + ps = (const u16_t *)(const void *)pb; + + if (((mem_ptr_t)ps & 3) && len > 1) { + sum += *ps++; + len -= 2; + } + + pl = (const u32_t *)(const void *)ps; + + while (len > 7) { + tmp = sum + *pl++; /* ping */ + if (tmp < sum) { + tmp++; /* add back carry */ + } + + sum = tmp + *pl++; /* pong */ + if (sum < tmp) { + sum++; /* add back carry */ + } + + len -= 8; + } + + /* make room in upper bits */ + sum = FOLD_U32T(sum); + + ps = (const u16_t *)pl; + + /* 16-bit aligned word remaining? */ + while (len > 1) { + sum += *ps++; + len -= 2; + } + + /* dangling tail byte remaining? */ + if (len > 0) { /* include odd byte */ + ((u8_t *)&t)[0] = *(const u8_t *)ps; + } + + sum += t; /* add end bytes */ + + /* Fold 32-bit sum to 16 bits + calling this twice is probably faster than if statements... */ + sum = FOLD_U32T(sum); + sum = FOLD_U32T(sum); + + if (odd) { + sum = SWAP_BYTES_IN_WORD(sum); + } + + return (u16_t)sum; +} +#endif + +/** Parts of the pseudo checksum which are common to IPv4 and IPv6 */ +static u16_t +inet_cksum_pseudo_base(struct pbuf *p, u8_t proto, u16_t proto_len, u32_t acc) +{ + struct pbuf *q; + int swapped = 0; + + /* iterate through all pbuf in chain */ + for (q = p; q != NULL; q = q->next) { + LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): checksumming pbuf %p (has next %p) \n", + (void *)q, (void *)q->next)); + acc += LWIP_CHKSUM(q->payload, q->len); + /*LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): unwrapped lwip_chksum()=%"X32_F" \n", acc));*/ + /* just executing this next line is probably faster that the if statement needed + to check whether we really need to execute it, and does no harm */ + acc = FOLD_U32T(acc); + if (q->len % 2 != 0) { + swapped = !swapped; + acc = SWAP_BYTES_IN_WORD(acc); + } + /*LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): wrapped lwip_chksum()=%"X32_F" \n", acc));*/ + } + + if (swapped) { + acc = SWAP_BYTES_IN_WORD(acc); + } + + acc += (u32_t)lwip_htons((u16_t)proto); + acc += (u32_t)lwip_htons(proto_len); + + /* Fold 32-bit sum to 16 bits + calling this twice is probably faster than if statements... */ + acc = FOLD_U32T(acc); + acc = FOLD_U32T(acc); + LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): pbuf chain lwip_chksum()=%"X32_F"\n", acc)); + return (u16_t)~(acc & 0xffffUL); +} + +#if LWIP_IPV4 +/* inet_chksum_pseudo: + * + * Calculates the IPv4 pseudo Internet checksum used by TCP and UDP for a pbuf chain. + * IP addresses are expected to be in network byte order. + * + * @param p chain of pbufs over that a checksum should be calculated (ip data part) + * @param src source ip address (used for checksum of pseudo header) + * @param dst destination ip address (used for checksum of pseudo header) + * @param proto ip protocol (used for checksum of pseudo header) + * @param proto_len length of the ip data part (used for checksum of pseudo header) + * @return checksum (as u16_t) to be saved directly in the protocol header + */ +u16_t +inet_chksum_pseudo(struct pbuf *p, u8_t proto, u16_t proto_len, + const ip4_addr_t *src, const ip4_addr_t *dest) +{ + u32_t acc; + u32_t addr; + + addr = ip4_addr_get_u32(src); + acc = (addr & 0xffffUL); + acc = (u32_t)(acc + ((addr >> 16) & 0xffffUL)); + addr = ip4_addr_get_u32(dest); + acc = (u32_t)(acc + (addr & 0xffffUL)); + acc = (u32_t)(acc + ((addr >> 16) & 0xffffUL)); + /* fold down to 16 bits */ + acc = FOLD_U32T(acc); + acc = FOLD_U32T(acc); + + return inet_cksum_pseudo_base(p, proto, proto_len, acc); +} +#endif /* LWIP_IPV4 */ + +#if LWIP_IPV6 +/** + * Calculates the checksum with IPv6 pseudo header used by TCP and UDP for a pbuf chain. + * IPv6 addresses are expected to be in network byte order. + * + * @param p chain of pbufs over that a checksum should be calculated (ip data part) + * @param proto ipv6 protocol/next header (used for checksum of pseudo header) + * @param proto_len length of the ipv6 payload (used for checksum of pseudo header) + * @param src source ipv6 address (used for checksum of pseudo header) + * @param dest destination ipv6 address (used for checksum of pseudo header) + * @return checksum (as u16_t) to be saved directly in the protocol header + */ +u16_t +ip6_chksum_pseudo(struct pbuf *p, u8_t proto, u16_t proto_len, + const ip6_addr_t *src, const ip6_addr_t *dest) +{ + u32_t acc = 0; + u32_t addr; + u8_t addr_part; + + for (addr_part = 0; addr_part < 4; addr_part++) { + addr = src->addr[addr_part]; + acc = (u32_t)(acc + (addr & 0xffffUL)); + acc = (u32_t)(acc + ((addr >> 16) & 0xffffUL)); + addr = dest->addr[addr_part]; + acc = (u32_t)(acc + (addr & 0xffffUL)); + acc = (u32_t)(acc + ((addr >> 16) & 0xffffUL)); + } + /* fold down to 16 bits */ + acc = FOLD_U32T(acc); + acc = FOLD_U32T(acc); + + return inet_cksum_pseudo_base(p, proto, proto_len, acc); +} +#endif /* LWIP_IPV6 */ + +/* ip_chksum_pseudo: + * + * Calculates the IPv4 or IPv6 pseudo Internet checksum used by TCP and UDP for a pbuf chain. + * IP addresses are expected to be in network byte order. + * + * @param p chain of pbufs over that a checksum should be calculated (ip data part) + * @param src source ip address (used for checksum of pseudo header) + * @param dst destination ip address (used for checksum of pseudo header) + * @param proto ip protocol (used for checksum of pseudo header) + * @param proto_len length of the ip data part (used for checksum of pseudo header) + * @return checksum (as u16_t) to be saved directly in the protocol header + */ +u16_t +ip_chksum_pseudo(struct pbuf *p, u8_t proto, u16_t proto_len, + const ip_addr_t *src, const ip_addr_t *dest) +{ +#if LWIP_IPV6 + if (IP_IS_V6(dest)) { + return ip6_chksum_pseudo(p, proto, proto_len, ip_2_ip6(src), ip_2_ip6(dest)); + } +#endif /* LWIP_IPV6 */ +#if LWIP_IPV4 && LWIP_IPV6 + else +#endif /* LWIP_IPV4 && LWIP_IPV6 */ +#if LWIP_IPV4 + { + return inet_chksum_pseudo(p, proto, proto_len, ip_2_ip4(src), ip_2_ip4(dest)); + } +#endif /* LWIP_IPV4 */ +} + +/** Parts of the pseudo checksum which are common to IPv4 and IPv6 */ +static u16_t +inet_cksum_pseudo_partial_base(struct pbuf *p, u8_t proto, u16_t proto_len, + u16_t chksum_len, u32_t acc) +{ + struct pbuf *q; + int swapped = 0; + u16_t chklen; + + /* iterate through all pbuf in chain */ + for (q = p; (q != NULL) && (chksum_len > 0); q = q->next) { + LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): checksumming pbuf %p (has next %p) \n", + (void *)q, (void *)q->next)); + chklen = q->len; + if (chklen > chksum_len) { + chklen = chksum_len; + } + acc += LWIP_CHKSUM(q->payload, chklen); + chksum_len = (u16_t)(chksum_len - chklen); + LWIP_ASSERT("delete me", chksum_len < 0x7fff); + /*LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): unwrapped lwip_chksum()=%"X32_F" \n", acc));*/ + /* fold the upper bit down */ + acc = FOLD_U32T(acc); + if (q->len % 2 != 0) { + swapped = !swapped; + acc = SWAP_BYTES_IN_WORD(acc); + } + /*LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): wrapped lwip_chksum()=%"X32_F" \n", acc));*/ + } + + if (swapped) { + acc = SWAP_BYTES_IN_WORD(acc); + } + + acc += (u32_t)lwip_htons((u16_t)proto); + acc += (u32_t)lwip_htons(proto_len); + + /* Fold 32-bit sum to 16 bits + calling this twice is probably faster than if statements... */ + acc = FOLD_U32T(acc); + acc = FOLD_U32T(acc); + LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): pbuf chain lwip_chksum()=%"X32_F"\n", acc)); + return (u16_t)~(acc & 0xffffUL); +} + +#if LWIP_IPV4 +/* inet_chksum_pseudo_partial: + * + * Calculates the IPv4 pseudo Internet checksum used by TCP and UDP for a pbuf chain. + * IP addresses are expected to be in network byte order. + * + * @param p chain of pbufs over that a checksum should be calculated (ip data part) + * @param src source ip address (used for checksum of pseudo header) + * @param dst destination ip address (used for checksum of pseudo header) + * @param proto ip protocol (used for checksum of pseudo header) + * @param proto_len length of the ip data part (used for checksum of pseudo header) + * @return checksum (as u16_t) to be saved directly in the protocol header + */ +u16_t +inet_chksum_pseudo_partial(struct pbuf *p, u8_t proto, u16_t proto_len, + u16_t chksum_len, const ip4_addr_t *src, const ip4_addr_t *dest) +{ + u32_t acc; + u32_t addr; + + addr = ip4_addr_get_u32(src); + acc = (addr & 0xffffUL); + acc = (u32_t)(acc + ((addr >> 16) & 0xffffUL)); + addr = ip4_addr_get_u32(dest); + acc = (u32_t)(acc + (addr & 0xffffUL)); + acc = (u32_t)(acc + ((addr >> 16) & 0xffffUL)); + /* fold down to 16 bits */ + acc = FOLD_U32T(acc); + acc = FOLD_U32T(acc); + + return inet_cksum_pseudo_partial_base(p, proto, proto_len, chksum_len, acc); +} +#endif /* LWIP_IPV4 */ + +#if LWIP_IPV6 +/** + * Calculates the checksum with IPv6 pseudo header used by TCP and UDP for a pbuf chain. + * IPv6 addresses are expected to be in network byte order. Will only compute for a + * portion of the payload. + * + * @param p chain of pbufs over that a checksum should be calculated (ip data part) + * @param proto ipv6 protocol/next header (used for checksum of pseudo header) + * @param proto_len length of the ipv6 payload (used for checksum of pseudo header) + * @param chksum_len number of payload bytes used to compute chksum + * @param src source ipv6 address (used for checksum of pseudo header) + * @param dest destination ipv6 address (used for checksum of pseudo header) + * @return checksum (as u16_t) to be saved directly in the protocol header + */ +u16_t +ip6_chksum_pseudo_partial(struct pbuf *p, u8_t proto, u16_t proto_len, + u16_t chksum_len, const ip6_addr_t *src, const ip6_addr_t *dest) +{ + u32_t acc = 0; + u32_t addr; + u8_t addr_part; + + for (addr_part = 0; addr_part < 4; addr_part++) { + addr = src->addr[addr_part]; + acc = (u32_t)(acc + (addr & 0xffffUL)); + acc = (u32_t)(acc + ((addr >> 16) & 0xffffUL)); + addr = dest->addr[addr_part]; + acc = (u32_t)(acc + (addr & 0xffffUL)); + acc = (u32_t)(acc + ((addr >> 16) & 0xffffUL)); + } + /* fold down to 16 bits */ + acc = FOLD_U32T(acc); + acc = FOLD_U32T(acc); + + return inet_cksum_pseudo_partial_base(p, proto, proto_len, chksum_len, acc); +} +#endif /* LWIP_IPV6 */ + +/* ip_chksum_pseudo_partial: + * + * Calculates the IPv4 or IPv6 pseudo Internet checksum used by TCP and UDP for a pbuf chain. + * + * @param p chain of pbufs over that a checksum should be calculated (ip data part) + * @param src source ip address (used for checksum of pseudo header) + * @param dst destination ip address (used for checksum of pseudo header) + * @param proto ip protocol (used for checksum of pseudo header) + * @param proto_len length of the ip data part (used for checksum of pseudo header) + * @return checksum (as u16_t) to be saved directly in the protocol header + */ +u16_t +ip_chksum_pseudo_partial(struct pbuf *p, u8_t proto, u16_t proto_len, + u16_t chksum_len, const ip_addr_t *src, const ip_addr_t *dest) +{ +#if LWIP_IPV6 + if (IP_IS_V6(dest)) { + return ip6_chksum_pseudo_partial(p, proto, proto_len, chksum_len, ip_2_ip6(src), ip_2_ip6(dest)); + } +#endif /* LWIP_IPV6 */ +#if LWIP_IPV4 && LWIP_IPV6 + else +#endif /* LWIP_IPV4 && LWIP_IPV6 */ +#if LWIP_IPV4 + { + return inet_chksum_pseudo_partial(p, proto, proto_len, chksum_len, ip_2_ip4(src), ip_2_ip4(dest)); + } +#endif /* LWIP_IPV4 */ +} + +/* inet_chksum: + * + * Calculates the Internet checksum over a portion of memory. Used primarily for IP + * and ICMP. + * + * @param dataptr start of the buffer to calculate the checksum (no alignment needed) + * @param len length of the buffer to calculate the checksum + * @return checksum (as u16_t) to be saved directly in the protocol header + */ + +u16_t +inet_chksum(const void *dataptr, u16_t len) +{ + return (u16_t)~(unsigned int)LWIP_CHKSUM(dataptr, len); +} + +/** + * Calculate a checksum over a chain of pbufs (without pseudo-header, much like + * inet_chksum only pbufs are used). + * + * @param p pbuf chain over that the checksum should be calculated + * @return checksum (as u16_t) to be saved directly in the protocol header + */ +u16_t +inet_chksum_pbuf(struct pbuf *p) +{ + u32_t acc; + struct pbuf *q; + int swapped = 0; + + acc = 0; + for (q = p; q != NULL; q = q->next) { + acc += LWIP_CHKSUM(q->payload, q->len); + acc = FOLD_U32T(acc); + if (q->len % 2 != 0) { + swapped = !swapped; + acc = SWAP_BYTES_IN_WORD(acc); + } + } + + if (swapped) { + acc = SWAP_BYTES_IN_WORD(acc); + } + return (u16_t)~(acc & 0xffffUL); +} + +/* These are some implementations for LWIP_CHKSUM_COPY, which copies data + * like MEMCPY but generates a checksum at the same time. Since this is a + * performance-sensitive function, you might want to create your own version + * in assembly targeted at your hardware by defining it in lwipopts.h: + * #define LWIP_CHKSUM_COPY(dst, src, len) your_chksum_copy(dst, src, len) + */ + +#if (LWIP_CHKSUM_COPY_ALGORITHM == 1) /* Version #1 */ +/** Safe but slow: first call MEMCPY, then call LWIP_CHKSUM. + * For architectures with big caches, data might still be in cache when + * generating the checksum after copying. + */ +u16_t +lwip_chksum_copy(void *dst, const void *src, u16_t len) +{ + MEMCPY(dst, src, len); + return LWIP_CHKSUM(dst, len); +} +#endif /* (LWIP_CHKSUM_COPY_ALGORITHM == 1) */ diff --git a/Other/tun2socks/core/c/core/init.c b/Other/tun2socks/core/c/core/init.c new file mode 100644 index 0000000..b3737a3 --- /dev/null +++ b/Other/tun2socks/core/c/core/init.c @@ -0,0 +1,380 @@ +/** + * @file + * Modules initialization + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + */ + +#include "lwip/opt.h" + +#include "lwip/init.h" +#include "lwip/stats.h" +#include "lwip/sys.h" +#include "lwip/mem.h" +#include "lwip/memp.h" +#include "lwip/pbuf.h" +#include "lwip/netif.h" +#include "lwip/sockets.h" +#include "lwip/ip.h" +#include "lwip/raw.h" +#include "lwip/udp.h" +#include "lwip/priv/tcp_priv.h" +#include "lwip/igmp.h" +#include "lwip/dns.h" +#include "lwip/timeouts.h" +#include "lwip/etharp.h" +#include "lwip/ip6.h" +#include "lwip/nd6.h" +#include "lwip/mld6.h" +#include "lwip/api.h" + +#include "netif/ppp/ppp_opts.h" +#include "netif/ppp/ppp_impl.h" + +#ifndef LWIP_SKIP_PACKING_CHECK + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct packed_struct_test { + PACK_STRUCT_FLD_8(u8_t dummy1); + PACK_STRUCT_FIELD(u32_t dummy2); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +#define PACKED_STRUCT_TEST_EXPECTED_SIZE 5 + +#endif + +/* Compile-time sanity checks for configuration errors. + * These can be done independently of LWIP_DEBUG, without penalty. + */ +#ifndef BYTE_ORDER +#error "BYTE_ORDER is not defined, you have to define it in your cc.h" +#endif +#if (!IP_SOF_BROADCAST && IP_SOF_BROADCAST_RECV) +#error "If you want to use broadcast filter per pcb on recv operations, you have to define IP_SOF_BROADCAST=1 in your lwipopts.h" +#endif +#if (!LWIP_UDP && LWIP_UDPLITE) +#error "If you want to use UDP Lite, you have to define LWIP_UDP=1 in your lwipopts.h" +#endif +#if (!LWIP_UDP && LWIP_DHCP) +#error "If you want to use DHCP, you have to define LWIP_UDP=1 in your lwipopts.h" +#endif +#if (!LWIP_UDP && !LWIP_RAW && LWIP_MULTICAST_TX_OPTIONS) +#error "If you want to use LWIP_MULTICAST_TX_OPTIONS, you have to define LWIP_UDP=1 and/or LWIP_RAW=1 in your lwipopts.h" +#endif +#if (!LWIP_UDP && LWIP_DNS) +#error "If you want to use DNS, you have to define LWIP_UDP=1 in your lwipopts.h" +#endif +#if !MEMP_MEM_MALLOC /* MEMP_NUM_* checks are disabled when not using the pool allocator */ +#if (LWIP_ARP && ARP_QUEUEING && (MEMP_NUM_ARP_QUEUE<=0)) +#error "If you want to use ARP Queueing, you have to define MEMP_NUM_ARP_QUEUE>=1 in your lwipopts.h" +#endif +#if (LWIP_RAW && (MEMP_NUM_RAW_PCB<=0)) +#error "If you want to use RAW, you have to define MEMP_NUM_RAW_PCB>=1 in your lwipopts.h" +#endif +#if (LWIP_UDP && (MEMP_NUM_UDP_PCB<=0)) +#error "If you want to use UDP, you have to define MEMP_NUM_UDP_PCB>=1 in your lwipopts.h" +#endif +#if (LWIP_TCP && (MEMP_NUM_TCP_PCB<=0)) +#error "If you want to use TCP, you have to define MEMP_NUM_TCP_PCB>=1 in your lwipopts.h" +#endif +#if (LWIP_IGMP && (MEMP_NUM_IGMP_GROUP<=1)) +#error "If you want to use IGMP, you have to define MEMP_NUM_IGMP_GROUP>1 in your lwipopts.h" +#endif +#if (LWIP_IGMP && !LWIP_MULTICAST_TX_OPTIONS) +#error "If you want to use IGMP, you have to define LWIP_MULTICAST_TX_OPTIONS==1 in your lwipopts.h" +#endif +#if (LWIP_IGMP && !LWIP_IPV4) +#error "IGMP needs LWIP_IPV4 enabled in your lwipopts.h" +#endif +#if ((LWIP_NETCONN || LWIP_SOCKET) && (MEMP_NUM_TCPIP_MSG_API<=0)) +#error "If you want to use Sequential API, you have to define MEMP_NUM_TCPIP_MSG_API>=1 in your lwipopts.h" +#endif +/* There must be sufficient timeouts, taking into account requirements of the subsystems. */ +#if LWIP_TIMERS && (MEMP_NUM_SYS_TIMEOUT < LWIP_NUM_SYS_TIMEOUT_INTERNAL) +#error "MEMP_NUM_SYS_TIMEOUT is too low to accomodate all required timeouts" +#endif +#if (IP_REASSEMBLY && (MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS)) +#error "MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS doesn't make sense since each struct ip_reassdata must hold 2 pbufs at least!" +#endif +#endif /* !MEMP_MEM_MALLOC */ +#if LWIP_WND_SCALE +#if (LWIP_TCP && (TCP_WND > 0xffffffff)) +#error "If you want to use TCP, TCP_WND must fit in an u32_t, so, you have to reduce it in your lwipopts.h" +#endif +#if (LWIP_TCP && (TCP_RCV_SCALE > 14)) +#error "The maximum valid window scale value is 14!" +#endif +#if (LWIP_TCP && (TCP_WND > (0xFFFFU << TCP_RCV_SCALE))) +#error "TCP_WND is bigger than the configured LWIP_WND_SCALE allows!" +#endif +#if (LWIP_TCP && ((TCP_WND >> TCP_RCV_SCALE) == 0)) +#error "TCP_WND is too small for the configured LWIP_WND_SCALE (results in zero window)!" +#endif +#else /* LWIP_WND_SCALE */ +#if (LWIP_TCP && (TCP_WND > 0xffff)) +#error "If you want to use TCP, TCP_WND must fit in an u16_t, so, you have to reduce it in your lwipopts.h (or enable window scaling)" +#endif +#endif /* LWIP_WND_SCALE */ +#if (LWIP_TCP && (TCP_SND_QUEUELEN > 0xffff)) +#error "If you want to use TCP, TCP_SND_QUEUELEN must fit in an u16_t, so, you have to reduce it in your lwipopts.h" +#endif +#if (LWIP_TCP && (TCP_SND_QUEUELEN < 2)) +#error "TCP_SND_QUEUELEN must be at least 2 for no-copy TCP writes to work" +#endif +#if (LWIP_TCP && ((TCP_MAXRTX > 12) || (TCP_SYNMAXRTX > 12))) +#error "If you want to use TCP, TCP_MAXRTX and TCP_SYNMAXRTX must less or equal to 12 (due to tcp_backoff table), so, you have to reduce them in your lwipopts.h" +#endif +#if (LWIP_TCP && TCP_LISTEN_BACKLOG && ((TCP_DEFAULT_LISTEN_BACKLOG < 0) || (TCP_DEFAULT_LISTEN_BACKLOG > 0xff))) +#error "If you want to use TCP backlog, TCP_DEFAULT_LISTEN_BACKLOG must fit into an u8_t" +#endif +#if (LWIP_TCP && LWIP_TCP_SACK_OUT && !TCP_QUEUE_OOSEQ) +#error "To use LWIP_TCP_SACK_OUT, TCP_QUEUE_OOSEQ needs to be enabled" +#endif +#if (LWIP_TCP && LWIP_TCP_SACK_OUT && (LWIP_TCP_MAX_SACK_NUM < 1)) +#error "LWIP_TCP_MAX_SACK_NUM must be greater than 0" +#endif +#if (LWIP_NETIF_API && (NO_SYS==1)) +#error "If you want to use NETIF API, you have to define NO_SYS=0 in your lwipopts.h" +#endif +#if ((LWIP_SOCKET || LWIP_NETCONN) && (NO_SYS==1)) +#error "If you want to use Sequential API, you have to define NO_SYS=0 in your lwipopts.h" +#endif +#if (LWIP_PPP_API && (NO_SYS==1)) +#error "If you want to use PPP API, you have to define NO_SYS=0 in your lwipopts.h" +#endif +#if (LWIP_PPP_API && (PPP_SUPPORT==0)) +#error "If you want to use PPP API, you have to enable PPP_SUPPORT in your lwipopts.h" +#endif +#if (((!LWIP_DHCP) || (!LWIP_AUTOIP)) && LWIP_DHCP_AUTOIP_COOP) +#error "If you want to use DHCP/AUTOIP cooperation mode, you have to define LWIP_DHCP=1 and LWIP_AUTOIP=1 in your lwipopts.h" +#endif +#if (((!LWIP_DHCP) || (!LWIP_ARP)) && DHCP_DOES_ARP_CHECK) +#error "If you want to use DHCP ARP checking, you have to define LWIP_DHCP=1 and LWIP_ARP=1 in your lwipopts.h" +#endif +#if (!LWIP_ARP && LWIP_AUTOIP) +#error "If you want to use AUTOIP, you have to define LWIP_ARP=1 in your lwipopts.h" +#endif +#if (LWIP_TCP && ((LWIP_EVENT_API && LWIP_CALLBACK_API) || (!LWIP_EVENT_API && !LWIP_CALLBACK_API))) +#error "One and exactly one of LWIP_EVENT_API and LWIP_CALLBACK_API has to be enabled in your lwipopts.h" +#endif +#if (LWIP_ALTCP && LWIP_EVENT_API) +#error "The application layered tcp API does not work with LWIP_EVENT_API" +#endif +#if (MEM_LIBC_MALLOC && MEM_USE_POOLS) +#error "MEM_LIBC_MALLOC and MEM_USE_POOLS may not both be simultaneously enabled in your lwipopts.h" +#endif +#if (MEM_USE_POOLS && !MEMP_USE_CUSTOM_POOLS) +#error "MEM_USE_POOLS requires custom pools (MEMP_USE_CUSTOM_POOLS) to be enabled in your lwipopts.h" +#endif +#if (PBUF_POOL_BUFSIZE <= MEM_ALIGNMENT) +#error "PBUF_POOL_BUFSIZE must be greater than MEM_ALIGNMENT or the offset may take the full first pbuf" +#endif +#if (DNS_LOCAL_HOSTLIST && !DNS_LOCAL_HOSTLIST_IS_DYNAMIC && !(defined(DNS_LOCAL_HOSTLIST_INIT))) +#error "you have to define define DNS_LOCAL_HOSTLIST_INIT {{'host1', 0x123}, {'host2', 0x234}} to initialize DNS_LOCAL_HOSTLIST" +#endif +#if PPP_SUPPORT && !PPPOS_SUPPORT && !PPPOE_SUPPORT && !PPPOL2TP_SUPPORT +#error "PPP_SUPPORT needs at least one of PPPOS_SUPPORT, PPPOE_SUPPORT or PPPOL2TP_SUPPORT turned on" +#endif +#if PPP_SUPPORT && !PPP_IPV4_SUPPORT && !PPP_IPV6_SUPPORT +#error "PPP_SUPPORT needs PPP_IPV4_SUPPORT and/or PPP_IPV6_SUPPORT turned on" +#endif +#if PPP_SUPPORT && PPP_IPV4_SUPPORT && !LWIP_IPV4 +#error "PPP_IPV4_SUPPORT needs LWIP_IPV4 turned on" +#endif +#if PPP_SUPPORT && PPP_IPV6_SUPPORT && !LWIP_IPV6 +#error "PPP_IPV6_SUPPORT needs LWIP_IPV6 turned on" +#endif +#if !LWIP_ETHERNET && (LWIP_ARP || PPPOE_SUPPORT) +#error "LWIP_ETHERNET needs to be turned on for LWIP_ARP or PPPOE_SUPPORT" +#endif +#if LWIP_TCPIP_CORE_LOCKING_INPUT && !LWIP_TCPIP_CORE_LOCKING +#error "When using LWIP_TCPIP_CORE_LOCKING_INPUT, LWIP_TCPIP_CORE_LOCKING must be enabled, too" +#endif +#if LWIP_TCP && LWIP_NETIF_TX_SINGLE_PBUF && !TCP_OVERSIZE +#error "LWIP_NETIF_TX_SINGLE_PBUF needs TCP_OVERSIZE enabled to create single-pbuf TCP packets" +#endif +#if LWIP_NETCONN && LWIP_TCP +#if NETCONN_COPY != TCP_WRITE_FLAG_COPY +#error "NETCONN_COPY != TCP_WRITE_FLAG_COPY" +#endif +#if NETCONN_MORE != TCP_WRITE_FLAG_MORE +#error "NETCONN_MORE != TCP_WRITE_FLAG_MORE" +#endif +#endif /* LWIP_NETCONN && LWIP_TCP */ +#if LWIP_SOCKET +#endif /* LWIP_SOCKET */ + + +/* Compile-time checks for deprecated options. + */ +#ifdef MEMP_NUM_TCPIP_MSG +#error "MEMP_NUM_TCPIP_MSG option is deprecated. Remove it from your lwipopts.h." +#endif +#ifdef TCP_REXMIT_DEBUG +#error "TCP_REXMIT_DEBUG option is deprecated. Remove it from your lwipopts.h." +#endif +#ifdef RAW_STATS +#error "RAW_STATS option is deprecated. Remove it from your lwipopts.h." +#endif +#ifdef ETHARP_QUEUE_FIRST +#error "ETHARP_QUEUE_FIRST option is deprecated. Remove it from your lwipopts.h." +#endif +#ifdef ETHARP_ALWAYS_INSERT +#error "ETHARP_ALWAYS_INSERT option is deprecated. Remove it from your lwipopts.h." +#endif +#if !NO_SYS && LWIP_TCPIP_CORE_LOCKING && LWIP_COMPAT_MUTEX && !defined(LWIP_COMPAT_MUTEX_ALLOWED) +#error "LWIP_COMPAT_MUTEX cannot prevent priority inversion. It is recommended to implement priority-aware mutexes. (Define LWIP_COMPAT_MUTEX_ALLOWED to disable this error.)" +#endif + +#ifndef LWIP_DISABLE_TCP_SANITY_CHECKS +#define LWIP_DISABLE_TCP_SANITY_CHECKS 0 +#endif +#ifndef LWIP_DISABLE_MEMP_SANITY_CHECKS +#define LWIP_DISABLE_MEMP_SANITY_CHECKS 0 +#endif + +/* MEMP sanity checks */ +#if MEMP_MEM_MALLOC +#if !LWIP_DISABLE_MEMP_SANITY_CHECKS +#if LWIP_NETCONN || LWIP_SOCKET +#if !MEMP_NUM_NETCONN && LWIP_SOCKET +#error "lwip_sanity_check: WARNING: MEMP_NUM_NETCONN cannot be 0 when using sockets!" +#endif +#else /* MEMP_MEM_MALLOC */ +#if MEMP_NUM_NETCONN > (MEMP_NUM_TCP_PCB+MEMP_NUM_TCP_PCB_LISTEN+MEMP_NUM_UDP_PCB+MEMP_NUM_RAW_PCB) +#error "lwip_sanity_check: WARNING: MEMP_NUM_NETCONN should be less than the sum of MEMP_NUM_{TCP,RAW,UDP}_PCB+MEMP_NUM_TCP_PCB_LISTEN. If you know what you are doing, define LWIP_DISABLE_MEMP_SANITY_CHECKS to 1 to disable this error." +#endif +#endif /* LWIP_NETCONN || LWIP_SOCKET */ +#endif /* !LWIP_DISABLE_MEMP_SANITY_CHECKS */ +#if MEM_USE_POOLS +#error "MEMP_MEM_MALLOC and MEM_USE_POOLS cannot be enabled at the same time" +#endif +#ifdef LWIP_HOOK_MEMP_AVAILABLE +#error "LWIP_HOOK_MEMP_AVAILABLE doesn't make sense with MEMP_MEM_MALLOC" +#endif +#endif /* MEMP_MEM_MALLOC */ + +/* TCP sanity checks */ +#if !LWIP_DISABLE_TCP_SANITY_CHECKS +#if LWIP_TCP +#if !MEMP_MEM_MALLOC && (MEMP_NUM_TCP_SEG < TCP_SND_QUEUELEN) +#error "lwip_sanity_check: WARNING: MEMP_NUM_TCP_SEG should be at least as big as TCP_SND_QUEUELEN. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." +#endif +#if TCP_SND_BUF < (2 * TCP_MSS) +#error "lwip_sanity_check: WARNING: TCP_SND_BUF must be at least as much as (2 * TCP_MSS) for things to work smoothly. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." +#endif +#if TCP_SND_QUEUELEN < (2 * (TCP_SND_BUF / TCP_MSS)) +#error "lwip_sanity_check: WARNING: TCP_SND_QUEUELEN must be at least as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." +#endif +#if TCP_SNDLOWAT >= TCP_SND_BUF +#error "lwip_sanity_check: WARNING: TCP_SNDLOWAT must be less than TCP_SND_BUF. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." +#endif +#if TCP_SNDLOWAT >= (0xFFFF - (4 * TCP_MSS)) +#error "lwip_sanity_check: WARNING: TCP_SNDLOWAT must at least be 4*MSS below u16_t overflow!" +#endif +#if TCP_SNDQUEUELOWAT >= TCP_SND_QUEUELEN +#error "lwip_sanity_check: WARNING: TCP_SNDQUEUELOWAT must be less than TCP_SND_QUEUELEN. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." +#endif +#if !MEMP_MEM_MALLOC && PBUF_POOL_SIZE && (PBUF_POOL_BUFSIZE <= (PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN)) +#error "lwip_sanity_check: WARNING: PBUF_POOL_BUFSIZE does not provide enough space for protocol headers. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." +#endif +#if !MEMP_MEM_MALLOC && PBUF_POOL_SIZE && (TCP_WND > (PBUF_POOL_SIZE * (PBUF_POOL_BUFSIZE - (PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN)))) +#error "lwip_sanity_check: WARNING: TCP_WND is larger than space provided by PBUF_POOL_SIZE * (PBUF_POOL_BUFSIZE - protocol headers). If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." +#endif +#if TCP_WND < TCP_MSS +#error "lwip_sanity_check: WARNING: TCP_WND is smaller than MSS. If you know what you are doing, define LWIP_DISABLE_TCP_SANITY_CHECKS to 1 to disable this error." +#endif +#endif /* LWIP_TCP */ +#endif /* !LWIP_DISABLE_TCP_SANITY_CHECKS */ + +/** + * @ingroup lwip_nosys + * Initialize all modules. + * Use this in NO_SYS mode. Use tcpip_init() otherwise. + */ +void +lwip_init(void) +{ +#ifndef LWIP_SKIP_CONST_CHECK + int a = 0; + LWIP_UNUSED_ARG(a); + LWIP_ASSERT("LWIP_CONST_CAST not implemented correctly. Check your lwIP port.", LWIP_CONST_CAST(void *, &a) == &a); +#endif +#ifndef LWIP_SKIP_PACKING_CHECK + LWIP_ASSERT("Struct packing not implemented correctly. Check your lwIP port.", sizeof(struct packed_struct_test) == PACKED_STRUCT_TEST_EXPECTED_SIZE); +#endif + + /* Modules initialization */ + stats_init(); +#if !NO_SYS + sys_init(); +#endif /* !NO_SYS */ + mem_init(); + memp_init(); + pbuf_init(); + netif_init(); +#if LWIP_IPV4 + ip_init(); +#if LWIP_ARP + etharp_init(); +#endif /* LWIP_ARP */ +#endif /* LWIP_IPV4 */ +#if LWIP_RAW + raw_init(); +#endif /* LWIP_RAW */ +#if LWIP_UDP + udp_init(); +#endif /* LWIP_UDP */ +#if LWIP_TCP + tcp_init(); +#endif /* LWIP_TCP */ +#if LWIP_IGMP + igmp_init(); +#endif /* LWIP_IGMP */ +#if LWIP_DNS + dns_init(); +#endif /* LWIP_DNS */ +#if PPP_SUPPORT + ppp_init(); +#endif + +#if LWIP_TIMERS + sys_timeouts_init(); +#endif /* LWIP_TIMERS */ +} diff --git a/Other/tun2socks/core/c/core/ip.c b/Other/tun2socks/core/c/core/ip.c new file mode 100644 index 0000000..18514cf --- /dev/null +++ b/Other/tun2socks/core/c/core/ip.c @@ -0,0 +1,167 @@ +/** + * @file + * Common IPv4 and IPv6 code + * + * @defgroup ip IP + * @ingroup callbackstyle_api + * + * @defgroup ip4 IPv4 + * @ingroup ip + * + * @defgroup ip6 IPv6 + * @ingroup ip + * + * @defgroup ipaddr IP address handling + * @ingroup infrastructure + * + * @defgroup ip4addr IPv4 only + * @ingroup ipaddr + * + * @defgroup ip6addr IPv6 only + * @ingroup ipaddr + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV4 || LWIP_IPV6 + +#include "lwip/ip_addr.h" +#include "lwip/ip.h" + +/** Global data for both IPv4 and IPv6 */ +struct ip_globals ip_data; + +#if LWIP_IPV4 && LWIP_IPV6 + +const ip_addr_t ip_addr_any_type = IPADDR_ANY_TYPE_INIT; + +/** + * @ingroup ipaddr + * Convert numeric IP address (both versions) into ASCII representation. + * returns ptr to static buffer; not reentrant! + * + * @param addr ip address in network order to convert + * @return pointer to a global static (!) buffer that holds the ASCII + * representation of addr + */ +char *ipaddr_ntoa(const ip_addr_t *addr) +{ + if (addr == NULL) { + return NULL; + } + if (IP_IS_V6(addr)) { + return ip6addr_ntoa(ip_2_ip6(addr)); + } else { + return ip4addr_ntoa(ip_2_ip4(addr)); + } +} + +/** + * @ingroup ipaddr + * Same as ipaddr_ntoa, but reentrant since a user-supplied buffer is used. + * + * @param addr ip address in network order to convert + * @param buf target buffer where the string is stored + * @param buflen length of buf + * @return either pointer to buf which now holds the ASCII + * representation of addr or NULL if buf was too small + */ +char *ipaddr_ntoa_r(const ip_addr_t *addr, char *buf, int buflen) +{ + if (addr == NULL) { + return NULL; + } + if (IP_IS_V6(addr)) { + return ip6addr_ntoa_r(ip_2_ip6(addr), buf, buflen); + } else { + return ip4addr_ntoa_r(ip_2_ip4(addr), buf, buflen); + } +} + +/** + * @ingroup ipaddr + * Convert IP address string (both versions) to numeric. + * The version is auto-detected from the string. + * + * @param cp IP address string to convert + * @param addr conversion result is stored here + * @return 1 on success, 0 on error + */ +int +ipaddr_aton(const char *cp, ip_addr_t *addr) +{ + if (cp != NULL) { + const char *c; + for (c = cp; *c != 0; c++) { + if (*c == ':') { + /* contains a colon: IPv6 address */ + if (addr) { + IP_SET_TYPE_VAL(*addr, IPADDR_TYPE_V6); + } + return ip6addr_aton(cp, ip_2_ip6(addr)); + } else if (*c == '.') { + /* contains a dot: IPv4 address */ + break; + } + } + /* call ip4addr_aton as fallback or if IPv4 was found */ + if (addr) { + IP_SET_TYPE_VAL(*addr, IPADDR_TYPE_V4); + } + return ip4addr_aton(cp, ip_2_ip4(addr)); + } + return 0; +} + +/** + * @ingroup lwip_nosys + * If both IP versions are enabled, this function can dispatch packets to the correct one. + * Don't call directly, pass to netif_add() and call netif->input(). + */ +err_t +ip_input(struct pbuf *p, struct netif *inp) +{ + if (p != NULL) { + if (IP_HDR_GET_VERSION(p->payload) == 6) { + return ip6_input(p, inp); + } + return ip4_input(p, inp); + } + return ERR_VAL; +} + +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + +#endif /* LWIP_IPV4 || LWIP_IPV6 */ diff --git a/Other/tun2socks/core/c/core/ipv4/autoip.c b/Other/tun2socks/core/c/core/ipv4/autoip.c new file mode 100644 index 0000000..9f7139b --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv4/autoip.c @@ -0,0 +1,527 @@ +/** + * @file + * AutoIP Automatic LinkLocal IP Configuration + * + * This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform + * with RFC 3927. + * + * @defgroup autoip AUTOIP + * @ingroup ip4 + * AUTOIP related functions + * USAGE: + * + * define @ref LWIP_AUTOIP 1 in your lwipopts.h + * Options: + * AUTOIP_TMR_INTERVAL msecs, + * I recommend a value of 100. The value must divide 1000 with a remainder almost 0. + * Possible values are 1000, 500, 333, 250, 200, 166, 142, 125, 111, 100 .... + * + * Without DHCP: + * - Call autoip_start() after netif_add(). + * + * With DHCP: + * - define @ref LWIP_DHCP_AUTOIP_COOP 1 in your lwipopts.h. + * - Configure your DHCP Client. + * + * @see netifapi_autoip + */ + +/* + * + * Copyright (c) 2007 Dominik Spies + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * Author: Dominik Spies + */ + +#include "lwip/opt.h" + +#if LWIP_IPV4 && LWIP_AUTOIP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/mem.h" +/* #include "lwip/udp.h" */ +#include "lwip/ip_addr.h" +#include "lwip/netif.h" +#include "lwip/autoip.h" +#include "lwip/etharp.h" +#include "lwip/prot/autoip.h" + +#include + +/** Pseudo random macro based on netif informations. + * You could use "rand()" from the C Library if you define LWIP_AUTOIP_RAND in lwipopts.h */ +#ifndef LWIP_AUTOIP_RAND +#define LWIP_AUTOIP_RAND(netif) ( (((u32_t)((netif->hwaddr[5]) & 0xff) << 24) | \ + ((u32_t)((netif->hwaddr[3]) & 0xff) << 16) | \ + ((u32_t)((netif->hwaddr[2]) & 0xff) << 8) | \ + ((u32_t)((netif->hwaddr[4]) & 0xff))) + \ + (netif_autoip_data(netif)? netif_autoip_data(netif)->tried_llipaddr : 0)) +#endif /* LWIP_AUTOIP_RAND */ + +/** + * Macro that generates the initial IP address to be tried by AUTOIP. + * If you want to override this, define it to something else in lwipopts.h. + */ +#ifndef LWIP_AUTOIP_CREATE_SEED_ADDR +#define LWIP_AUTOIP_CREATE_SEED_ADDR(netif) \ + lwip_htonl(AUTOIP_RANGE_START + ((u32_t)(((u8_t)(netif->hwaddr[4])) | \ + ((u32_t)((u8_t)(netif->hwaddr[5]))) << 8))) +#endif /* LWIP_AUTOIP_CREATE_SEED_ADDR */ + +/* static functions */ +static err_t autoip_arp_announce(struct netif *netif); +static void autoip_start_probing(struct netif *netif); + +/** + * @ingroup autoip + * Set a statically allocated struct autoip to work with. + * Using this prevents autoip_start to allocate it using mem_malloc. + * + * @param netif the netif for which to set the struct autoip + * @param autoip (uninitialised) autoip struct allocated by the application + */ +void +autoip_set_struct(struct netif *netif, struct autoip *autoip) +{ + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ASSERT("netif != NULL", netif != NULL); + LWIP_ASSERT("autoip != NULL", autoip != NULL); + LWIP_ASSERT("netif already has a struct autoip set", + netif_autoip_data(netif) == NULL); + + /* clear data structure */ + memset(autoip, 0, sizeof(struct autoip)); + /* autoip->state = AUTOIP_STATE_OFF; */ + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_AUTOIP, autoip); +} + +/** Restart AutoIP client and check the next address (conflict detected) + * + * @param netif The netif under AutoIP control + */ +static void +autoip_restart(struct netif *netif) +{ + struct autoip *autoip = netif_autoip_data(netif); + autoip->tried_llipaddr++; + autoip_start(netif); +} + +/** + * Handle a IP address conflict after an ARP conflict detection + */ +static void +autoip_handle_arp_conflict(struct netif *netif) +{ + struct autoip *autoip = netif_autoip_data(netif); + + /* RFC3927, 2.5 "Conflict Detection and Defense" allows two options where + a) means retreat on the first conflict and + b) allows to keep an already configured address when having only one + conflict in 10 seconds + We use option b) since it helps to improve the chance that one of the two + conflicting hosts may be able to retain its address. */ + + if (autoip->lastconflict > 0) { + /* retreat, there was a conflicting ARP in the last DEFEND_INTERVAL seconds */ + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + ("autoip_handle_arp_conflict(): we are defending, but in DEFEND_INTERVAL, retreating\n")); + + /* Active TCP sessions are aborted when removing the ip addresss */ + autoip_restart(netif); + } else { + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + ("autoip_handle_arp_conflict(): we are defend, send ARP Announce\n")); + autoip_arp_announce(netif); + autoip->lastconflict = DEFEND_INTERVAL * AUTOIP_TICKS_PER_SECOND; + } +} + +/** + * Create an IP-Address out of range 169.254.1.0 to 169.254.254.255 + * + * @param netif network interface on which create the IP-Address + * @param ipaddr ip address to initialize + */ +static void +autoip_create_addr(struct netif *netif, ip4_addr_t *ipaddr) +{ + struct autoip *autoip = netif_autoip_data(netif); + + /* Here we create an IP-Address out of range 169.254.1.0 to 169.254.254.255 + * compliant to RFC 3927 Section 2.1 + * We have 254 * 256 possibilities */ + + u32_t addr = lwip_ntohl(LWIP_AUTOIP_CREATE_SEED_ADDR(netif)); + addr += autoip->tried_llipaddr; + addr = AUTOIP_NET | (addr & 0xffff); + /* Now, 169.254.0.0 <= addr <= 169.254.255.255 */ + + if (addr < AUTOIP_RANGE_START) { + addr += AUTOIP_RANGE_END - AUTOIP_RANGE_START + 1; + } + if (addr > AUTOIP_RANGE_END) { + addr -= AUTOIP_RANGE_END - AUTOIP_RANGE_START + 1; + } + LWIP_ASSERT("AUTOIP address not in range", (addr >= AUTOIP_RANGE_START) && + (addr <= AUTOIP_RANGE_END)); + ip4_addr_set_u32(ipaddr, lwip_htonl(addr)); + + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + ("autoip_create_addr(): tried_llipaddr=%"U16_F", %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + (u16_t)(autoip->tried_llipaddr), ip4_addr1_16(ipaddr), ip4_addr2_16(ipaddr), + ip4_addr3_16(ipaddr), ip4_addr4_16(ipaddr))); +} + +/** + * Sends an ARP probe from a network interface + * + * @param netif network interface used to send the probe + */ +static err_t +autoip_arp_probe(struct netif *netif) +{ + struct autoip *autoip = netif_autoip_data(netif); + /* this works because netif->ip_addr is ANY */ + return etharp_request(netif, &autoip->llipaddr); +} + +/** + * Sends an ARP announce from a network interface + * + * @param netif network interface used to send the announce + */ +static err_t +autoip_arp_announce(struct netif *netif) +{ + return etharp_gratuitous(netif); +} + +/** + * Configure interface for use with current LL IP-Address + * + * @param netif network interface to configure with current LL IP-Address + */ +static err_t +autoip_bind(struct netif *netif) +{ + struct autoip *autoip = netif_autoip_data(netif); + ip4_addr_t sn_mask, gw_addr; + + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE, + ("autoip_bind(netif=%p) %c%c%"U16_F" %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + (void *)netif, netif->name[0], netif->name[1], (u16_t)netif->num, + ip4_addr1_16(&autoip->llipaddr), ip4_addr2_16(&autoip->llipaddr), + ip4_addr3_16(&autoip->llipaddr), ip4_addr4_16(&autoip->llipaddr))); + + IP4_ADDR(&sn_mask, 255, 255, 0, 0); + IP4_ADDR(&gw_addr, 0, 0, 0, 0); + + netif_set_addr(netif, &autoip->llipaddr, &sn_mask, &gw_addr); + /* interface is used by routing now that an address is set */ + + return ERR_OK; +} + +/** + * @ingroup autoip + * Start AutoIP client + * + * @param netif network interface on which start the AutoIP client + */ +err_t +autoip_start(struct netif *netif) +{ + struct autoip *autoip = netif_autoip_data(netif); + err_t result = ERR_OK; + + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ERROR("netif is not up, old style port?", netif_is_up(netif), return ERR_ARG;); + + /* Set IP-Address, Netmask and Gateway to 0 to make sure that + * ARP Packets are formed correctly + */ + netif_set_addr(netif, IP4_ADDR_ANY4, IP4_ADDR_ANY4, IP4_ADDR_ANY4); + + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + ("autoip_start(netif=%p) %c%c%"U16_F"\n", (void *)netif, netif->name[0], + netif->name[1], (u16_t)netif->num)); + if (autoip == NULL) { + /* no AutoIP client attached yet? */ + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE, + ("autoip_start(): starting new AUTOIP client\n")); + autoip = (struct autoip *)mem_calloc(1, sizeof(struct autoip)); + if (autoip == NULL) { + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE, + ("autoip_start(): could not allocate autoip\n")); + return ERR_MEM; + } + /* store this AutoIP client in the netif */ + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_AUTOIP, autoip); + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE, ("autoip_start(): allocated autoip")); + } else { + autoip->state = AUTOIP_STATE_OFF; + autoip->ttw = 0; + autoip->sent_num = 0; + ip4_addr_set_zero(&autoip->llipaddr); + autoip->lastconflict = 0; + } + + autoip_create_addr(netif, &(autoip->llipaddr)); + autoip_start_probing(netif); + + return result; +} + +static void +autoip_start_probing(struct netif *netif) +{ + struct autoip *autoip = netif_autoip_data(netif); + + autoip->state = AUTOIP_STATE_PROBING; + autoip->sent_num = 0; + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + ("autoip_start_probing(): changing state to PROBING: %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + ip4_addr1_16(&autoip->llipaddr), ip4_addr2_16(&autoip->llipaddr), + ip4_addr3_16(&autoip->llipaddr), ip4_addr4_16(&autoip->llipaddr))); + + /* time to wait to first probe, this is randomly + * chosen out of 0 to PROBE_WAIT seconds. + * compliant to RFC 3927 Section 2.2.1 + */ + autoip->ttw = (u16_t)(LWIP_AUTOIP_RAND(netif) % (PROBE_WAIT * AUTOIP_TICKS_PER_SECOND)); + + /* + * if we tried more then MAX_CONFLICTS we must limit our rate for + * acquiring and probing address + * compliant to RFC 3927 Section 2.2.1 + */ + if (autoip->tried_llipaddr > MAX_CONFLICTS) { + autoip->ttw = RATE_LIMIT_INTERVAL * AUTOIP_TICKS_PER_SECOND; + } +} + +/** + * Handle a possible change in the network configuration. + * + * If there is an AutoIP address configured, take the interface down + * and begin probing with the same address. + */ +void +autoip_network_changed(struct netif *netif) +{ + struct autoip *autoip = netif_autoip_data(netif); + + if (autoip && (autoip->state != AUTOIP_STATE_OFF)) { + autoip_start_probing(netif); + } +} + +/** + * @ingroup autoip + * Stop AutoIP client + * + * @param netif network interface on which stop the AutoIP client + */ +err_t +autoip_stop(struct netif *netif) +{ + struct autoip *autoip = netif_autoip_data(netif); + + LWIP_ASSERT_CORE_LOCKED(); + if (autoip != NULL) { + autoip->state = AUTOIP_STATE_OFF; + if (ip4_addr_islinklocal(netif_ip4_addr(netif))) { + netif_set_addr(netif, IP4_ADDR_ANY4, IP4_ADDR_ANY4, IP4_ADDR_ANY4); + } + } + return ERR_OK; +} + +/** + * Has to be called in loop every AUTOIP_TMR_INTERVAL milliseconds + */ +void +autoip_tmr(void) +{ + struct netif *netif; + /* loop through netif's */ + NETIF_FOREACH(netif) { + struct autoip *autoip = netif_autoip_data(netif); + /* only act on AutoIP configured interfaces */ + if (autoip != NULL) { + if (autoip->lastconflict > 0) { + autoip->lastconflict--; + } + + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE, + ("autoip_tmr() AutoIP-State: %"U16_F", ttw=%"U16_F"\n", + (u16_t)(autoip->state), autoip->ttw)); + + if (autoip->ttw > 0) { + autoip->ttw--; + } + + switch (autoip->state) { + case AUTOIP_STATE_PROBING: + if (autoip->ttw == 0) { + if (autoip->sent_num >= PROBE_NUM) { + /* Switch to ANNOUNCING: now we can bind to an IP address and use it */ + autoip->state = AUTOIP_STATE_ANNOUNCING; + autoip_bind(netif); + /* autoip_bind() calls netif_set_addr(): this triggers a gratuitous ARP + which counts as an announcement */ + autoip->sent_num = 1; + autoip->ttw = ANNOUNCE_WAIT * AUTOIP_TICKS_PER_SECOND; + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + ("autoip_tmr(): changing state to ANNOUNCING: %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + ip4_addr1_16(&autoip->llipaddr), ip4_addr2_16(&autoip->llipaddr), + ip4_addr3_16(&autoip->llipaddr), ip4_addr4_16(&autoip->llipaddr))); + } else { + autoip_arp_probe(netif); + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE, ("autoip_tmr() PROBING Sent Probe\n")); + autoip->sent_num++; + if (autoip->sent_num == PROBE_NUM) { + /* calculate time to wait to for announce */ + autoip->ttw = ANNOUNCE_WAIT * AUTOIP_TICKS_PER_SECOND; + } else { + /* calculate time to wait to next probe */ + autoip->ttw = (u16_t)((LWIP_AUTOIP_RAND(netif) % + ((PROBE_MAX - PROBE_MIN) * AUTOIP_TICKS_PER_SECOND) ) + + PROBE_MIN * AUTOIP_TICKS_PER_SECOND); + } + } + } + break; + + case AUTOIP_STATE_ANNOUNCING: + if (autoip->ttw == 0) { + autoip_arp_announce(netif); + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE, ("autoip_tmr() ANNOUNCING Sent Announce\n")); + autoip->ttw = ANNOUNCE_INTERVAL * AUTOIP_TICKS_PER_SECOND; + autoip->sent_num++; + + if (autoip->sent_num >= ANNOUNCE_NUM) { + autoip->state = AUTOIP_STATE_BOUND; + autoip->sent_num = 0; + autoip->ttw = 0; + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + ("autoip_tmr(): changing state to BOUND: %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + ip4_addr1_16(&autoip->llipaddr), ip4_addr2_16(&autoip->llipaddr), + ip4_addr3_16(&autoip->llipaddr), ip4_addr4_16(&autoip->llipaddr))); + } + } + break; + + default: + /* nothing to do in other states */ + break; + } + } + } +} + +/** + * Handles every incoming ARP Packet, called by etharp_input(). + * + * @param netif network interface to use for autoip processing + * @param hdr Incoming ARP packet + */ +void +autoip_arp_reply(struct netif *netif, struct etharp_hdr *hdr) +{ + struct autoip *autoip = netif_autoip_data(netif); + + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE, ("autoip_arp_reply()\n")); + if ((autoip != NULL) && (autoip->state != AUTOIP_STATE_OFF)) { + /* when ip.src == llipaddr && hw.src != netif->hwaddr + * + * when probing ip.dst == llipaddr && hw.src != netif->hwaddr + * we have a conflict and must solve it + */ + ip4_addr_t sipaddr, dipaddr; + struct eth_addr netifaddr; + SMEMCPY(netifaddr.addr, netif->hwaddr, ETH_HWADDR_LEN); + + /* Copy struct ip4_addr_wordaligned to aligned ip4_addr, to support compilers without + * structure packing (not using structure copy which breaks strict-aliasing rules). + */ + IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T(&sipaddr, &hdr->sipaddr); + IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T(&dipaddr, &hdr->dipaddr); + + if (autoip->state == AUTOIP_STATE_PROBING) { + /* RFC 3927 Section 2.2.1: + * from beginning to after ANNOUNCE_WAIT + * seconds we have a conflict if + * ip.src == llipaddr OR + * ip.dst == llipaddr && hw.src != own hwaddr + */ + if ((ip4_addr_cmp(&sipaddr, &autoip->llipaddr)) || + (ip4_addr_isany_val(sipaddr) && + ip4_addr_cmp(&dipaddr, &autoip->llipaddr) && + !eth_addr_cmp(&netifaddr, &hdr->shwaddr))) { + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | LWIP_DBG_LEVEL_WARNING, + ("autoip_arp_reply(): Probe Conflict detected\n")); + autoip_restart(netif); + } + } else { + /* RFC 3927 Section 2.5: + * in any state we have a conflict if + * ip.src == llipaddr && hw.src != own hwaddr + */ + if (ip4_addr_cmp(&sipaddr, &autoip->llipaddr) && + !eth_addr_cmp(&netifaddr, &hdr->shwaddr)) { + LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | LWIP_DBG_LEVEL_WARNING, + ("autoip_arp_reply(): Conflicting ARP-Packet detected\n")); + autoip_handle_arp_conflict(netif); + } + } + } +} + +/** check if AutoIP supplied netif->ip_addr + * + * @param netif the netif to check + * @return 1 if AutoIP supplied netif->ip_addr (state BOUND or ANNOUNCING), + * 0 otherwise + */ +u8_t +autoip_supplied_address(const struct netif *netif) +{ + if ((netif != NULL) && (netif_autoip_data(netif) != NULL)) { + struct autoip *autoip = netif_autoip_data(netif); + return (autoip->state == AUTOIP_STATE_BOUND) || (autoip->state == AUTOIP_STATE_ANNOUNCING); + } + return 0; +} + +u8_t +autoip_accept_packet(struct netif *netif, const ip4_addr_t *addr) +{ + struct autoip *autoip = netif_autoip_data(netif); + return (autoip != NULL) && ip4_addr_cmp(addr, &(autoip->llipaddr)); +} + +#endif /* LWIP_IPV4 && LWIP_AUTOIP */ diff --git a/Other/tun2socks/core/c/core/ipv4/dhcp.c b/Other/tun2socks/core/c/core/ipv4/dhcp.c new file mode 100644 index 0000000..534574f --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv4/dhcp.c @@ -0,0 +1,1990 @@ +/** + * @file + * Dynamic Host Configuration Protocol client + * + * @defgroup dhcp4 DHCPv4 + * @ingroup ip4 + * DHCP (IPv4) related functions + * This is a DHCP client for the lwIP TCP/IP stack. It aims to conform + * with RFC 2131 and RFC 2132. + * + * @todo: + * - Support for interfaces other than Ethernet (SLIP, PPP, ...) + * + * Options: + * @ref DHCP_COARSE_TIMER_SECS (recommended 60 which is a minute) + * @ref DHCP_FINE_TIMER_MSECS (recommended 500 which equals TCP coarse timer) + * + * dhcp_start() starts a DHCP client instance which + * configures the interface by obtaining an IP address lease and maintaining it. + * + * Use dhcp_release() to end the lease and use dhcp_stop() + * to remove the DHCP client. + * + * @see LWIP_HOOK_DHCP_APPEND_OPTIONS + * @see LWIP_HOOK_DHCP_PARSE_OPTION + * + * @see netifapi_dhcp4 + */ + +/* + * Copyright (c) 2001-2004 Leon Woestenberg + * Copyright (c) 2001-2004 Axon Digital Design B.V., The Netherlands. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * The Swedish Institute of Computer Science and Adam Dunkels + * are specifically granted permission to redistribute this + * source code. + * + * Author: Leon Woestenberg + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV4 && LWIP_DHCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/stats.h" +#include "lwip/mem.h" +#include "lwip/udp.h" +#include "lwip/ip_addr.h" +#include "lwip/netif.h" +#include "lwip/def.h" +#include "lwip/dhcp.h" +#include "lwip/autoip.h" +#include "lwip/dns.h" +#include "lwip/etharp.h" +#include "lwip/prot/dhcp.h" +#include "lwip/prot/iana.h" + +#include + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif +#ifndef LWIP_HOOK_DHCP_APPEND_OPTIONS +#define LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, state, msg, msg_type, options_len_ptr) +#endif +#ifndef LWIP_HOOK_DHCP_PARSE_OPTION +#define LWIP_HOOK_DHCP_PARSE_OPTION(netif, dhcp, state, msg, msg_type, option, len, pbuf, offset) do { LWIP_UNUSED_ARG(msg); } while(0) +#endif + +/** DHCP_CREATE_RAND_XID: if this is set to 1, the xid is created using + * LWIP_RAND() (this overrides DHCP_GLOBAL_XID) + */ +#ifndef DHCP_CREATE_RAND_XID +#define DHCP_CREATE_RAND_XID 1 +#endif + +/** Default for DHCP_GLOBAL_XID is 0xABCD0000 + * This can be changed by defining DHCP_GLOBAL_XID and DHCP_GLOBAL_XID_HEADER, e.g. + * \#define DHCP_GLOBAL_XID_HEADER "stdlib.h" + * \#define DHCP_GLOBAL_XID rand() + */ +#ifdef DHCP_GLOBAL_XID_HEADER +#include DHCP_GLOBAL_XID_HEADER /* include optional starting XID generation prototypes */ +#endif + +/** DHCP_OPTION_MAX_MSG_SIZE is set to the MTU + * MTU is checked to be big enough in dhcp_start */ +#define DHCP_MAX_MSG_LEN(netif) (netif->mtu) +#define DHCP_MAX_MSG_LEN_MIN_REQUIRED 576 +/** Minimum length for reply before packet is parsed */ +#define DHCP_MIN_REPLY_LEN 44 + +#define REBOOT_TRIES 2 + +#if LWIP_DNS && LWIP_DHCP_MAX_DNS_SERVERS +#if DNS_MAX_SERVERS > LWIP_DHCP_MAX_DNS_SERVERS +#define LWIP_DHCP_PROVIDE_DNS_SERVERS LWIP_DHCP_MAX_DNS_SERVERS +#else +#define LWIP_DHCP_PROVIDE_DNS_SERVERS DNS_MAX_SERVERS +#endif +#else +#define LWIP_DHCP_PROVIDE_DNS_SERVERS 0 +#endif + +/** Option handling: options are parsed in dhcp_parse_reply + * and saved in an array where other functions can load them from. + * This might be moved into the struct dhcp (not necessarily since + * lwIP is single-threaded and the array is only used while in recv + * callback). */ +enum dhcp_option_idx { + DHCP_OPTION_IDX_OVERLOAD = 0, + DHCP_OPTION_IDX_MSG_TYPE, + DHCP_OPTION_IDX_SERVER_ID, + DHCP_OPTION_IDX_LEASE_TIME, + DHCP_OPTION_IDX_T1, + DHCP_OPTION_IDX_T2, + DHCP_OPTION_IDX_SUBNET_MASK, + DHCP_OPTION_IDX_ROUTER, +#if LWIP_DHCP_PROVIDE_DNS_SERVERS + DHCP_OPTION_IDX_DNS_SERVER, + DHCP_OPTION_IDX_DNS_SERVER_LAST = DHCP_OPTION_IDX_DNS_SERVER + LWIP_DHCP_PROVIDE_DNS_SERVERS - 1, +#endif /* LWIP_DHCP_PROVIDE_DNS_SERVERS */ +#if LWIP_DHCP_GET_NTP_SRV + DHCP_OPTION_IDX_NTP_SERVER, + DHCP_OPTION_IDX_NTP_SERVER_LAST = DHCP_OPTION_IDX_NTP_SERVER + LWIP_DHCP_MAX_NTP_SERVERS - 1, +#endif /* LWIP_DHCP_GET_NTP_SRV */ + DHCP_OPTION_IDX_MAX +}; + +/** Holds the decoded option values, only valid while in dhcp_recv. + @todo: move this into struct dhcp? */ +u32_t dhcp_rx_options_val[DHCP_OPTION_IDX_MAX]; +/** Holds a flag which option was received and is contained in dhcp_rx_options_val, + only valid while in dhcp_recv. + @todo: move this into struct dhcp? */ +u8_t dhcp_rx_options_given[DHCP_OPTION_IDX_MAX]; + +static u8_t dhcp_discover_request_options[] = { + DHCP_OPTION_SUBNET_MASK, + DHCP_OPTION_ROUTER, + DHCP_OPTION_BROADCAST +#if LWIP_DHCP_PROVIDE_DNS_SERVERS + , DHCP_OPTION_DNS_SERVER +#endif /* LWIP_DHCP_PROVIDE_DNS_SERVERS */ +#if LWIP_DHCP_GET_NTP_SRV + , DHCP_OPTION_NTP +#endif /* LWIP_DHCP_GET_NTP_SRV */ +}; + +#ifdef DHCP_GLOBAL_XID +static u32_t xid; +static u8_t xid_initialised; +#endif /* DHCP_GLOBAL_XID */ + +#define dhcp_option_given(dhcp, idx) (dhcp_rx_options_given[idx] != 0) +#define dhcp_got_option(dhcp, idx) (dhcp_rx_options_given[idx] = 1) +#define dhcp_clear_option(dhcp, idx) (dhcp_rx_options_given[idx] = 0) +#define dhcp_clear_all_options(dhcp) (memset(dhcp_rx_options_given, 0, sizeof(dhcp_rx_options_given))) +#define dhcp_get_option_value(dhcp, idx) (dhcp_rx_options_val[idx]) +#define dhcp_set_option_value(dhcp, idx, val) (dhcp_rx_options_val[idx] = (val)) + +static struct udp_pcb *dhcp_pcb; +static u8_t dhcp_pcb_refcount; + +/* DHCP client state machine functions */ +static err_t dhcp_discover(struct netif *netif); +static err_t dhcp_select(struct netif *netif); +static void dhcp_bind(struct netif *netif); +#if DHCP_DOES_ARP_CHECK +static err_t dhcp_decline(struct netif *netif); +#endif /* DHCP_DOES_ARP_CHECK */ +static err_t dhcp_rebind(struct netif *netif); +static err_t dhcp_reboot(struct netif *netif); +static void dhcp_set_state(struct dhcp *dhcp, u8_t new_state); + +/* receive, unfold, parse and free incoming messages */ +static void dhcp_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port); + +/* set the DHCP timers */ +static void dhcp_timeout(struct netif *netif); +static void dhcp_t1_timeout(struct netif *netif); +static void dhcp_t2_timeout(struct netif *netif); + +/* build outgoing messages */ +/* create a DHCP message, fill in common headers */ +static struct pbuf *dhcp_create_msg(struct netif *netif, struct dhcp *dhcp, u8_t message_type, u16_t *options_out_len); +/* add a DHCP option (type, then length in bytes) */ +static u16_t dhcp_option(u16_t options_out_len, u8_t *options, u8_t option_type, u8_t option_len); +/* add option values */ +static u16_t dhcp_option_byte(u16_t options_out_len, u8_t *options, u8_t value); +static u16_t dhcp_option_short(u16_t options_out_len, u8_t *options, u16_t value); +static u16_t dhcp_option_long(u16_t options_out_len, u8_t *options, u32_t value); +#if LWIP_NETIF_HOSTNAME +static u16_t dhcp_option_hostname(u16_t options_out_len, u8_t *options, struct netif *netif); +#endif /* LWIP_NETIF_HOSTNAME */ +/* always add the DHCP options trailer to end and pad */ +static void dhcp_option_trailer(u16_t options_out_len, u8_t *options, struct pbuf *p_out); + +/** Ensure DHCP PCB is allocated and bound */ +static err_t +dhcp_inc_pcb_refcount(void) +{ + if (dhcp_pcb_refcount == 0) { + LWIP_ASSERT("dhcp_inc_pcb_refcount(): memory leak", dhcp_pcb == NULL); + + /* allocate UDP PCB */ + dhcp_pcb = udp_new(); + + if (dhcp_pcb == NULL) { + return ERR_MEM; + } + + ip_set_option(dhcp_pcb, SOF_BROADCAST); + + /* set up local and remote port for the pcb -> listen on all interfaces on all src/dest IPs */ + udp_bind(dhcp_pcb, IP4_ADDR_ANY, LWIP_IANA_PORT_DHCP_CLIENT); + udp_connect(dhcp_pcb, IP4_ADDR_ANY, LWIP_IANA_PORT_DHCP_SERVER); + udp_recv(dhcp_pcb, dhcp_recv, NULL); + } + + dhcp_pcb_refcount++; + + return ERR_OK; +} + +/** Free DHCP PCB if the last netif stops using it */ +static void +dhcp_dec_pcb_refcount(void) +{ + LWIP_ASSERT("dhcp_pcb_refcount(): refcount error", (dhcp_pcb_refcount > 0)); + dhcp_pcb_refcount--; + + if (dhcp_pcb_refcount == 0) { + udp_remove(dhcp_pcb); + dhcp_pcb = NULL; + } +} + +/** + * Back-off the DHCP client (because of a received NAK response). + * + * Back-off the DHCP client because of a received NAK. Receiving a + * NAK means the client asked for something non-sensible, for + * example when it tries to renew a lease obtained on another network. + * + * We clear any existing set IP address and restart DHCP negotiation + * afresh (as per RFC2131 3.2.3). + * + * @param netif the netif under DHCP control + */ +static void +dhcp_handle_nak(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_handle_nak(netif=%p) %c%c%"U16_F"\n", + (void *)netif, netif->name[0], netif->name[1], (u16_t)netif->num)); + /* Change to a defined state - set this before assigning the address + to ensure the callback can use dhcp_supplied_address() */ + dhcp_set_state(dhcp, DHCP_STATE_BACKING_OFF); + /* remove IP address from interface (must no longer be used, as per RFC2131) */ + netif_set_addr(netif, IP4_ADDR_ANY4, IP4_ADDR_ANY4, IP4_ADDR_ANY4); + /* We can immediately restart discovery */ + dhcp_discover(netif); +} + +#if DHCP_DOES_ARP_CHECK +/** + * Checks if the offered IP address is already in use. + * + * It does so by sending an ARP request for the offered address and + * entering CHECKING state. If no ARP reply is received within a small + * interval, the address is assumed to be free for use by us. + * + * @param netif the netif under DHCP control + */ +static void +dhcp_check(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + err_t result; + u16_t msecs; + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_check(netif=%p) %c%c\n", (void *)netif, (s16_t)netif->name[0], + (s16_t)netif->name[1])); + dhcp_set_state(dhcp, DHCP_STATE_CHECKING); + /* create an ARP query for the offered IP address, expecting that no host + responds, as the IP address should not be in use. */ + result = etharp_query(netif, &dhcp->offered_ip_addr, NULL); + if (result != ERR_OK) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, ("dhcp_check: could not perform ARP query\n")); + } + if (dhcp->tries < 255) { + dhcp->tries++; + } + msecs = 500; + dhcp->request_timeout = (u16_t)((msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_check(): set request timeout %"U16_F" msecs\n", msecs)); +} +#endif /* DHCP_DOES_ARP_CHECK */ + +/** + * Remember the configuration offered by a DHCP server. + * + * @param netif the netif under DHCP control + */ +static void +dhcp_handle_offer(struct netif *netif, struct dhcp_msg *msg_in) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_handle_offer(netif=%p) %c%c%"U16_F"\n", + (void *)netif, netif->name[0], netif->name[1], (u16_t)netif->num)); + /* obtain the server address */ + if (dhcp_option_given(dhcp, DHCP_OPTION_IDX_SERVER_ID)) { + dhcp->request_timeout = 0; /* stop timer */ + + ip_addr_set_ip4_u32(&dhcp->server_ip_addr, lwip_htonl(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_SERVER_ID))); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_STATE, ("dhcp_handle_offer(): server 0x%08"X32_F"\n", + ip4_addr_get_u32(ip_2_ip4(&dhcp->server_ip_addr)))); + /* remember offered address */ + ip4_addr_copy(dhcp->offered_ip_addr, msg_in->yiaddr); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_STATE, ("dhcp_handle_offer(): offer for 0x%08"X32_F"\n", + ip4_addr_get_u32(&dhcp->offered_ip_addr))); + + dhcp_select(netif); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, + ("dhcp_handle_offer(netif=%p) did not get server ID!\n", (void *)netif)); + } +} + +/** + * Select a DHCP server offer out of all offers. + * + * Simply select the first offer received. + * + * @param netif the netif under DHCP control + * @return lwIP specific error (see error.h) + */ +static err_t +dhcp_select(struct netif *netif) +{ + struct dhcp *dhcp; + err_t result; + u16_t msecs; + u8_t i; + struct pbuf *p_out; + u16_t options_out_len; + + LWIP_ERROR("dhcp_select: netif != NULL", (netif != NULL), return ERR_ARG;); + dhcp = netif_dhcp_data(netif); + LWIP_ERROR("dhcp_select: dhcp != NULL", (dhcp != NULL), return ERR_VAL;); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_select(netif=%p) %c%c%"U16_F"\n", (void *)netif, netif->name[0], netif->name[1], (u16_t)netif->num)); + dhcp_set_state(dhcp, DHCP_STATE_REQUESTING); + + /* create and initialize the DHCP message header */ + p_out = dhcp_create_msg(netif, dhcp, DHCP_REQUEST, &options_out_len); + if (p_out != NULL) { + struct dhcp_msg *msg_out = (struct dhcp_msg *)p_out->payload; + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN); + options_out_len = dhcp_option_short(options_out_len, msg_out->options, DHCP_MAX_MSG_LEN(netif)); + + /* MUST request the offered IP address */ + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_REQUESTED_IP, 4); + options_out_len = dhcp_option_long(options_out_len, msg_out->options, lwip_ntohl(ip4_addr_get_u32(&dhcp->offered_ip_addr))); + + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_SERVER_ID, 4); + options_out_len = dhcp_option_long(options_out_len, msg_out->options, lwip_ntohl(ip4_addr_get_u32(ip_2_ip4(&dhcp->server_ip_addr)))); + + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_PARAMETER_REQUEST_LIST, LWIP_ARRAYSIZE(dhcp_discover_request_options)); + for (i = 0; i < LWIP_ARRAYSIZE(dhcp_discover_request_options); i++) { + options_out_len = dhcp_option_byte(options_out_len, msg_out->options, dhcp_discover_request_options[i]); + } + +#if LWIP_NETIF_HOSTNAME + options_out_len = dhcp_option_hostname(options_out_len, msg_out->options, netif); +#endif /* LWIP_NETIF_HOSTNAME */ + + LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, DHCP_STATE_REQUESTING, msg_out, DHCP_REQUEST, &options_out_len); + dhcp_option_trailer(options_out_len, msg_out->options, p_out); + + /* send broadcast to any DHCP server */ + result = udp_sendto_if_src(dhcp_pcb, p_out, IP_ADDR_BROADCAST, LWIP_IANA_PORT_DHCP_SERVER, netif, IP4_ADDR_ANY); + pbuf_free(p_out); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_select: REQUESTING\n")); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, ("dhcp_select: could not allocate DHCP request\n")); + result = ERR_MEM; + } + if (dhcp->tries < 255) { + dhcp->tries++; + } + msecs = (u16_t)((dhcp->tries < 6 ? 1 << dhcp->tries : 60) * 1000); + dhcp->request_timeout = (u16_t)((msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_STATE, ("dhcp_select(): set request timeout %"U16_F" msecs\n", msecs)); + return result; +} + +/** + * The DHCP timer that checks for lease renewal/rebind timeouts. + * Must be called once a minute (see @ref DHCP_COARSE_TIMER_SECS). + */ +void +dhcp_coarse_tmr(void) +{ + struct netif *netif; + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_coarse_tmr()\n")); + /* iterate through all network interfaces */ + NETIF_FOREACH(netif) { + /* only act on DHCP configured interfaces */ + struct dhcp *dhcp = netif_dhcp_data(netif); + if ((dhcp != NULL) && (dhcp->state != DHCP_STATE_OFF)) { + /* compare lease time to expire timeout */ + if (dhcp->t0_timeout && (++dhcp->lease_used == dhcp->t0_timeout)) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_coarse_tmr(): t0 timeout\n")); + /* this clients' lease time has expired */ + dhcp_release_and_stop(netif); + dhcp_start(netif); + /* timer is active (non zero), and triggers (zeroes) now? */ + } else if (dhcp->t2_rebind_time && (dhcp->t2_rebind_time-- == 1)) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_coarse_tmr(): t2 timeout\n")); + /* this clients' rebind timeout triggered */ + dhcp_t2_timeout(netif); + /* timer is active (non zero), and triggers (zeroes) now */ + } else if (dhcp->t1_renew_time && (dhcp->t1_renew_time-- == 1)) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_coarse_tmr(): t1 timeout\n")); + /* this clients' renewal timeout triggered */ + dhcp_t1_timeout(netif); + } + } + } +} + +/** + * DHCP transaction timeout handling (this function must be called every 500ms, + * see @ref DHCP_FINE_TIMER_MSECS). + * + * A DHCP server is expected to respond within a short period of time. + * This timer checks whether an outstanding DHCP request is timed out. + */ +void +dhcp_fine_tmr(void) +{ + struct netif *netif; + /* loop through netif's */ + NETIF_FOREACH(netif) { + struct dhcp *dhcp = netif_dhcp_data(netif); + /* only act on DHCP configured interfaces */ + if (dhcp != NULL) { + /* timer is active (non zero), and is about to trigger now */ + if (dhcp->request_timeout > 1) { + dhcp->request_timeout--; + } else if (dhcp->request_timeout == 1) { + dhcp->request_timeout--; + /* { dhcp->request_timeout == 0 } */ + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_fine_tmr(): request timeout\n")); + /* this client's request timeout triggered */ + dhcp_timeout(netif); + } + } + } +} + +/** + * A DHCP negotiation transaction, or ARP request, has timed out. + * + * The timer that was started with the DHCP or ARP request has + * timed out, indicating no response was received in time. + * + * @param netif the netif under DHCP control + */ +static void +dhcp_timeout(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_timeout()\n")); + /* back-off period has passed, or server selection timed out */ + if ((dhcp->state == DHCP_STATE_BACKING_OFF) || (dhcp->state == DHCP_STATE_SELECTING)) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_timeout(): restarting discovery\n")); + dhcp_discover(netif); + /* receiving the requested lease timed out */ + } else if (dhcp->state == DHCP_STATE_REQUESTING) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_timeout(): REQUESTING, DHCP request timed out\n")); + if (dhcp->tries <= 5) { + dhcp_select(netif); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_timeout(): REQUESTING, releasing, restarting\n")); + dhcp_release_and_stop(netif); + dhcp_start(netif); + } +#if DHCP_DOES_ARP_CHECK + /* received no ARP reply for the offered address (which is good) */ + } else if (dhcp->state == DHCP_STATE_CHECKING) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_timeout(): CHECKING, ARP request timed out\n")); + if (dhcp->tries <= 1) { + dhcp_check(netif); + /* no ARP replies on the offered address, + looks like the IP address is indeed free */ + } else { + /* bind the interface to the offered address */ + dhcp_bind(netif); + } +#endif /* DHCP_DOES_ARP_CHECK */ + } else if (dhcp->state == DHCP_STATE_REBOOTING) { + if (dhcp->tries < REBOOT_TRIES) { + dhcp_reboot(netif); + } else { + dhcp_discover(netif); + } + } +} + +/** + * The renewal period has timed out. + * + * @param netif the netif under DHCP control + */ +static void +dhcp_t1_timeout(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_STATE, ("dhcp_t1_timeout()\n")); + if ((dhcp->state == DHCP_STATE_REQUESTING) || (dhcp->state == DHCP_STATE_BOUND) || + (dhcp->state == DHCP_STATE_RENEWING)) { + /* just retry to renew - note that the rebind timer (t2) will + * eventually time-out if renew tries fail. */ + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + ("dhcp_t1_timeout(): must renew\n")); + /* This slightly different to RFC2131: DHCPREQUEST will be sent from state + DHCP_STATE_RENEWING, not DHCP_STATE_BOUND */ + dhcp_renew(netif); + /* Calculate next timeout */ + if (((dhcp->t2_timeout - dhcp->lease_used) / 2) >= ((60 + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS)) { + dhcp->t1_renew_time = (u16_t)((dhcp->t2_timeout - dhcp->lease_used) / 2); + } + } +} + +/** + * The rebind period has timed out. + * + * @param netif the netif under DHCP control + */ +static void +dhcp_t2_timeout(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_t2_timeout()\n")); + if ((dhcp->state == DHCP_STATE_REQUESTING) || (dhcp->state == DHCP_STATE_BOUND) || + (dhcp->state == DHCP_STATE_RENEWING) || (dhcp->state == DHCP_STATE_REBINDING)) { + /* just retry to rebind */ + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + ("dhcp_t2_timeout(): must rebind\n")); + /* This slightly different to RFC2131: DHCPREQUEST will be sent from state + DHCP_STATE_REBINDING, not DHCP_STATE_BOUND */ + dhcp_rebind(netif); + /* Calculate next timeout */ + if (((dhcp->t0_timeout - dhcp->lease_used) / 2) >= ((60 + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS)) { + dhcp->t2_rebind_time = (u16_t)((dhcp->t0_timeout - dhcp->lease_used) / 2); + } + } +} + +/** + * Handle a DHCP ACK packet + * + * @param netif the netif under DHCP control + */ +static void +dhcp_handle_ack(struct netif *netif, struct dhcp_msg *msg_in) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + +#if LWIP_DHCP_PROVIDE_DNS_SERVERS || LWIP_DHCP_GET_NTP_SRV + u8_t n; +#endif /* LWIP_DHCP_PROVIDE_DNS_SERVERS || LWIP_DHCP_GET_NTP_SRV */ +#if LWIP_DHCP_GET_NTP_SRV + ip4_addr_t ntp_server_addrs[LWIP_DHCP_MAX_NTP_SERVERS]; +#endif + + /* clear options we might not get from the ACK */ + ip4_addr_set_zero(&dhcp->offered_sn_mask); + ip4_addr_set_zero(&dhcp->offered_gw_addr); +#if LWIP_DHCP_BOOTP_FILE + ip4_addr_set_zero(&dhcp->offered_si_addr); +#endif /* LWIP_DHCP_BOOTP_FILE */ + + /* lease time given? */ + if (dhcp_option_given(dhcp, DHCP_OPTION_IDX_LEASE_TIME)) { + /* remember offered lease time */ + dhcp->offered_t0_lease = dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_LEASE_TIME); + } + /* renewal period given? */ + if (dhcp_option_given(dhcp, DHCP_OPTION_IDX_T1)) { + /* remember given renewal period */ + dhcp->offered_t1_renew = dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_T1); + } else { + /* calculate safe periods for renewal */ + dhcp->offered_t1_renew = dhcp->offered_t0_lease / 2; + } + + /* renewal period given? */ + if (dhcp_option_given(dhcp, DHCP_OPTION_IDX_T2)) { + /* remember given rebind period */ + dhcp->offered_t2_rebind = dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_T2); + } else { + /* calculate safe periods for rebinding (offered_t0_lease * 0.875 -> 87.5%)*/ + dhcp->offered_t2_rebind = (dhcp->offered_t0_lease * 7U) / 8U; + } + + /* (y)our internet address */ + ip4_addr_copy(dhcp->offered_ip_addr, msg_in->yiaddr); + +#if LWIP_DHCP_BOOTP_FILE + /* copy boot server address, + boot file name copied in dhcp_parse_reply if not overloaded */ + ip4_addr_copy(dhcp->offered_si_addr, msg_in->siaddr); +#endif /* LWIP_DHCP_BOOTP_FILE */ + + /* subnet mask given? */ + if (dhcp_option_given(dhcp, DHCP_OPTION_IDX_SUBNET_MASK)) { + /* remember given subnet mask */ + ip4_addr_set_u32(&dhcp->offered_sn_mask, lwip_htonl(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_SUBNET_MASK))); + dhcp->subnet_mask_given = 1; + } else { + dhcp->subnet_mask_given = 0; + } + + /* gateway router */ + if (dhcp_option_given(dhcp, DHCP_OPTION_IDX_ROUTER)) { + ip4_addr_set_u32(&dhcp->offered_gw_addr, lwip_htonl(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_ROUTER))); + } + +#if LWIP_DHCP_GET_NTP_SRV + /* NTP servers */ + for (n = 0; (n < LWIP_DHCP_MAX_NTP_SERVERS) && dhcp_option_given(dhcp, DHCP_OPTION_IDX_NTP_SERVER + n); n++) { + ip4_addr_set_u32(&ntp_server_addrs[n], lwip_htonl(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_NTP_SERVER + n))); + } + dhcp_set_ntp_servers(n, ntp_server_addrs); +#endif /* LWIP_DHCP_GET_NTP_SRV */ + +#if LWIP_DHCP_PROVIDE_DNS_SERVERS + /* DNS servers */ + for (n = 0; (n < LWIP_DHCP_PROVIDE_DNS_SERVERS) && dhcp_option_given(dhcp, DHCP_OPTION_IDX_DNS_SERVER + n); n++) { + ip_addr_t dns_addr; + ip_addr_set_ip4_u32_val(dns_addr, lwip_htonl(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_DNS_SERVER + n))); + dns_setserver(n, &dns_addr); + } +#endif /* LWIP_DHCP_PROVIDE_DNS_SERVERS */ +} + +/** + * @ingroup dhcp4 + * Set a statically allocated struct dhcp to work with. + * Using this prevents dhcp_start to allocate it using mem_malloc. + * + * @param netif the netif for which to set the struct dhcp + * @param dhcp (uninitialised) dhcp struct allocated by the application + */ +void +dhcp_set_struct(struct netif *netif, struct dhcp *dhcp) +{ + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ASSERT("netif != NULL", netif != NULL); + LWIP_ASSERT("dhcp != NULL", dhcp != NULL); + LWIP_ASSERT("netif already has a struct dhcp set", netif_dhcp_data(netif) == NULL); + + /* clear data structure */ + memset(dhcp, 0, sizeof(struct dhcp)); + /* dhcp_set_state(&dhcp, DHCP_STATE_OFF); */ + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, dhcp); +} + +/** + * @ingroup dhcp4 + * Removes a struct dhcp from a netif. + * + * ATTENTION: Only use this when not using dhcp_set_struct() to allocate the + * struct dhcp since the memory is passed back to the heap. + * + * @param netif the netif from which to remove the struct dhcp + */ +void dhcp_cleanup(struct netif *netif) +{ + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ASSERT("netif != NULL", netif != NULL); + + if (netif_dhcp_data(netif) != NULL) { + mem_free(netif_dhcp_data(netif)); + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, NULL); + } +} + +/** + * @ingroup dhcp4 + * Start DHCP negotiation for a network interface. + * + * If no DHCP client instance was attached to this interface, + * a new client is created first. If a DHCP client instance + * was already present, it restarts negotiation. + * + * @param netif The lwIP network interface + * @return lwIP error code + * - ERR_OK - No error + * - ERR_MEM - Out of memory + */ +err_t +dhcp_start(struct netif *netif) +{ + struct dhcp *dhcp; + err_t result; + + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ERROR("netif != NULL", (netif != NULL), return ERR_ARG;); + LWIP_ERROR("netif is not up, old style port?", netif_is_up(netif), return ERR_ARG;); + dhcp = netif_dhcp_data(netif); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_start(netif=%p) %c%c%"U16_F"\n", (void *)netif, netif->name[0], netif->name[1], (u16_t)netif->num)); + + /* check MTU of the netif */ + if (netif->mtu < DHCP_MAX_MSG_LEN_MIN_REQUIRED) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_start(): Cannot use this netif with DHCP: MTU is too small\n")); + return ERR_MEM; + } + + /* no DHCP client attached yet? */ + if (dhcp == NULL) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_start(): mallocing new DHCP client\n")); + dhcp = (struct dhcp *)mem_malloc(sizeof(struct dhcp)); + if (dhcp == NULL) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_start(): could not allocate dhcp\n")); + return ERR_MEM; + } + + /* store this dhcp client in the netif */ + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, dhcp); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_start(): allocated dhcp")); + /* already has DHCP client attached */ + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_start(): restarting DHCP configuration\n")); + + if (dhcp->pcb_allocated != 0) { + dhcp_dec_pcb_refcount(); /* free DHCP PCB if not needed any more */ + } + /* dhcp is cleared below, no need to reset flag*/ + } + + /* clear data structure */ + memset(dhcp, 0, sizeof(struct dhcp)); + /* dhcp_set_state(&dhcp, DHCP_STATE_OFF); */ + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_start(): starting DHCP configuration\n")); + + if (dhcp_inc_pcb_refcount() != ERR_OK) { /* ensure DHCP PCB is allocated */ + return ERR_MEM; + } + dhcp->pcb_allocated = 1; + + if (!netif_is_link_up(netif)) { + /* set state INIT and wait for dhcp_network_changed() to call dhcp_discover() */ + dhcp_set_state(dhcp, DHCP_STATE_INIT); + return ERR_OK; + } + + /* (re)start the DHCP negotiation */ + result = dhcp_discover(netif); + if (result != ERR_OK) { + /* free resources allocated above */ + dhcp_release_and_stop(netif); + return ERR_MEM; + } + return result; +} + +/** + * @ingroup dhcp4 + * Inform a DHCP server of our manual configuration. + * + * This informs DHCP servers of our fixed IP address configuration + * by sending an INFORM message. It does not involve DHCP address + * configuration, it is just here to be nice to the network. + * + * @param netif The lwIP network interface + */ +void +dhcp_inform(struct netif *netif) +{ + struct dhcp dhcp; + struct pbuf *p_out; + u16_t options_out_len; + + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ERROR("netif != NULL", (netif != NULL), return;); + + if (dhcp_inc_pcb_refcount() != ERR_OK) { /* ensure DHCP PCB is allocated */ + return; + } + + memset(&dhcp, 0, sizeof(struct dhcp)); + dhcp_set_state(&dhcp, DHCP_STATE_INFORMING); + + /* create and initialize the DHCP message header */ + p_out = dhcp_create_msg(netif, &dhcp, DHCP_INFORM, &options_out_len); + if (p_out != NULL) { + struct dhcp_msg *msg_out = (struct dhcp_msg *)p_out->payload; + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN); + options_out_len = dhcp_option_short(options_out_len, msg_out->options, DHCP_MAX_MSG_LEN(netif)); + + LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, &dhcp, DHCP_STATE_INFORMING, msg_out, DHCP_INFORM, &options_out_len); + dhcp_option_trailer(options_out_len, msg_out->options, p_out); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_inform: INFORMING\n")); + + udp_sendto_if(dhcp_pcb, p_out, IP_ADDR_BROADCAST, LWIP_IANA_PORT_DHCP_SERVER, netif); + + pbuf_free(p_out); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("dhcp_inform: could not allocate DHCP request\n")); + } + + dhcp_dec_pcb_refcount(); /* delete DHCP PCB if not needed any more */ +} + +/** Handle a possible change in the network configuration. + * + * This enters the REBOOTING state to verify that the currently bound + * address is still valid. + */ +void +dhcp_network_changed(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + + if (!dhcp) { + return; + } + switch (dhcp->state) { + case DHCP_STATE_REBINDING: + case DHCP_STATE_RENEWING: + case DHCP_STATE_BOUND: + case DHCP_STATE_REBOOTING: + dhcp->tries = 0; + dhcp_reboot(netif); + break; + case DHCP_STATE_OFF: + /* stay off */ + break; + default: + LWIP_ASSERT("invalid dhcp->state", dhcp->state <= DHCP_STATE_BACKING_OFF); + /* INIT/REQUESTING/CHECKING/BACKING_OFF restart with new 'rid' because the + state changes, SELECTING: continue with current 'rid' as we stay in the + same state */ +#if LWIP_DHCP_AUTOIP_COOP + if (dhcp->autoip_coop_state == DHCP_AUTOIP_COOP_STATE_ON) { + autoip_stop(netif); + dhcp->autoip_coop_state = DHCP_AUTOIP_COOP_STATE_OFF; + } +#endif /* LWIP_DHCP_AUTOIP_COOP */ + /* ensure we start with short timeouts, even if already discovering */ + dhcp->tries = 0; + dhcp_discover(netif); + break; + } +} + +#if DHCP_DOES_ARP_CHECK +/** + * Match an ARP reply with the offered IP address: + * check whether the offered IP address is not in use using ARP + * + * @param netif the network interface on which the reply was received + * @param addr The IP address we received a reply from + */ +void +dhcp_arp_reply(struct netif *netif, const ip4_addr_t *addr) +{ + struct dhcp *dhcp; + + LWIP_ERROR("netif != NULL", (netif != NULL), return;); + dhcp = netif_dhcp_data(netif); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_arp_reply()\n")); + /* is a DHCP client doing an ARP check? */ + if ((dhcp != NULL) && (dhcp->state == DHCP_STATE_CHECKING)) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_arp_reply(): CHECKING, arp reply for 0x%08"X32_F"\n", + ip4_addr_get_u32(addr))); + /* did a host respond with the address we + were offered by the DHCP server? */ + if (ip4_addr_cmp(addr, &dhcp->offered_ip_addr)) { + /* we will not accept the offered address */ + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | LWIP_DBG_LEVEL_WARNING, + ("dhcp_arp_reply(): arp reply matched with offered address, declining\n")); + dhcp_decline(netif); + } + } +} + +/** + * Decline an offered lease. + * + * Tell the DHCP server we do not accept the offered address. + * One reason to decline the lease is when we find out the address + * is already in use by another host (through ARP). + * + * @param netif the netif under DHCP control + */ +static err_t +dhcp_decline(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + err_t result; + u16_t msecs; + struct pbuf *p_out; + u16_t options_out_len; + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_decline()\n")); + dhcp_set_state(dhcp, DHCP_STATE_BACKING_OFF); + /* create and initialize the DHCP message header */ + p_out = dhcp_create_msg(netif, dhcp, DHCP_DECLINE, &options_out_len); + if (p_out != NULL) { + struct dhcp_msg *msg_out = (struct dhcp_msg *)p_out->payload; + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_REQUESTED_IP, 4); + options_out_len = dhcp_option_long(options_out_len, msg_out->options, lwip_ntohl(ip4_addr_get_u32(&dhcp->offered_ip_addr))); + + LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, DHCP_STATE_BACKING_OFF, msg_out, DHCP_DECLINE, &options_out_len); + dhcp_option_trailer(options_out_len, msg_out->options, p_out); + + /* per section 4.4.4, broadcast DECLINE messages */ + result = udp_sendto_if_src(dhcp_pcb, p_out, IP_ADDR_BROADCAST, LWIP_IANA_PORT_DHCP_SERVER, netif, IP4_ADDR_ANY); + pbuf_free(p_out); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_decline: BACKING OFF\n")); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, + ("dhcp_decline: could not allocate DHCP request\n")); + result = ERR_MEM; + } + if (dhcp->tries < 255) { + dhcp->tries++; + } + msecs = 10 * 1000; + dhcp->request_timeout = (u16_t)((msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_decline(): set request timeout %"U16_F" msecs\n", msecs)); + return result; +} +#endif /* DHCP_DOES_ARP_CHECK */ + + +/** + * Start the DHCP process, discover a DHCP server. + * + * @param netif the netif under DHCP control + */ +static err_t +dhcp_discover(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + err_t result = ERR_OK; + u16_t msecs; + u8_t i; + struct pbuf *p_out; + u16_t options_out_len; + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_discover()\n")); + + ip4_addr_set_any(&dhcp->offered_ip_addr); + dhcp_set_state(dhcp, DHCP_STATE_SELECTING); + /* create and initialize the DHCP message header */ + p_out = dhcp_create_msg(netif, dhcp, DHCP_DISCOVER, &options_out_len); + if (p_out != NULL) { + struct dhcp_msg *msg_out = (struct dhcp_msg *)p_out->payload; + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_discover: making request\n")); + + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN); + options_out_len = dhcp_option_short(options_out_len, msg_out->options, DHCP_MAX_MSG_LEN(netif)); + + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_PARAMETER_REQUEST_LIST, LWIP_ARRAYSIZE(dhcp_discover_request_options)); + for (i = 0; i < LWIP_ARRAYSIZE(dhcp_discover_request_options); i++) { + options_out_len = dhcp_option_byte(options_out_len, msg_out->options, dhcp_discover_request_options[i]); + } + LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, DHCP_STATE_SELECTING, msg_out, DHCP_DISCOVER, &options_out_len); + dhcp_option_trailer(options_out_len, msg_out->options, p_out); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_discover: sendto(DISCOVER, IP_ADDR_BROADCAST, LWIP_IANA_PORT_DHCP_SERVER)\n")); + udp_sendto_if_src(dhcp_pcb, p_out, IP_ADDR_BROADCAST, LWIP_IANA_PORT_DHCP_SERVER, netif, IP4_ADDR_ANY); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_discover: deleting()ing\n")); + pbuf_free(p_out); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_discover: SELECTING\n")); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("dhcp_discover: could not allocate DHCP request\n")); + } + if (dhcp->tries < 255) { + dhcp->tries++; + } +#if LWIP_DHCP_AUTOIP_COOP + if (dhcp->tries >= LWIP_DHCP_AUTOIP_COOP_TRIES && dhcp->autoip_coop_state == DHCP_AUTOIP_COOP_STATE_OFF) { + dhcp->autoip_coop_state = DHCP_AUTOIP_COOP_STATE_ON; + autoip_start(netif); + } +#endif /* LWIP_DHCP_AUTOIP_COOP */ + msecs = (u16_t)((dhcp->tries < 6 ? 1 << dhcp->tries : 60) * 1000); + dhcp->request_timeout = (u16_t)((msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_discover(): set request timeout %"U16_F" msecs\n", msecs)); + return result; +} + + +/** + * Bind the interface to the offered IP address. + * + * @param netif network interface to bind to the offered address + */ +static void +dhcp_bind(struct netif *netif) +{ + u32_t timeout; + struct dhcp *dhcp; + ip4_addr_t sn_mask, gw_addr; + LWIP_ERROR("dhcp_bind: netif != NULL", (netif != NULL), return;); + dhcp = netif_dhcp_data(netif); + LWIP_ERROR("dhcp_bind: dhcp != NULL", (dhcp != NULL), return;); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_bind(netif=%p) %c%c%"U16_F"\n", (void *)netif, netif->name[0], netif->name[1], (u16_t)netif->num)); + + /* reset time used of lease */ + dhcp->lease_used = 0; + + if (dhcp->offered_t0_lease != 0xffffffffUL) { + /* set renewal period timer */ + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_bind(): t0 renewal timer %"U32_F" secs\n", dhcp->offered_t0_lease)); + timeout = (dhcp->offered_t0_lease + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS; + if (timeout > 0xffff) { + timeout = 0xffff; + } + dhcp->t0_timeout = (u16_t)timeout; + if (dhcp->t0_timeout == 0) { + dhcp->t0_timeout = 1; + } + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_bind(): set request timeout %"U32_F" msecs\n", dhcp->offered_t0_lease * 1000)); + } + + /* temporary DHCP lease? */ + if (dhcp->offered_t1_renew != 0xffffffffUL) { + /* set renewal period timer */ + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_bind(): t1 renewal timer %"U32_F" secs\n", dhcp->offered_t1_renew)); + timeout = (dhcp->offered_t1_renew + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS; + if (timeout > 0xffff) { + timeout = 0xffff; + } + dhcp->t1_timeout = (u16_t)timeout; + if (dhcp->t1_timeout == 0) { + dhcp->t1_timeout = 1; + } + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_bind(): set request timeout %"U32_F" msecs\n", dhcp->offered_t1_renew * 1000)); + dhcp->t1_renew_time = dhcp->t1_timeout; + } + /* set renewal period timer */ + if (dhcp->offered_t2_rebind != 0xffffffffUL) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_bind(): t2 rebind timer %"U32_F" secs\n", dhcp->offered_t2_rebind)); + timeout = (dhcp->offered_t2_rebind + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS; + if (timeout > 0xffff) { + timeout = 0xffff; + } + dhcp->t2_timeout = (u16_t)timeout; + if (dhcp->t2_timeout == 0) { + dhcp->t2_timeout = 1; + } + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_bind(): set request timeout %"U32_F" msecs\n", dhcp->offered_t2_rebind * 1000)); + dhcp->t2_rebind_time = dhcp->t2_timeout; + } + + /* If we have sub 1 minute lease, t2 and t1 will kick in at the same time. */ + if ((dhcp->t1_timeout >= dhcp->t2_timeout) && (dhcp->t2_timeout > 0)) { + dhcp->t1_timeout = 0; + } + + if (dhcp->subnet_mask_given) { + /* copy offered network mask */ + ip4_addr_copy(sn_mask, dhcp->offered_sn_mask); + } else { + /* subnet mask not given, choose a safe subnet mask given the network class */ + u8_t first_octet = ip4_addr1(&dhcp->offered_ip_addr); + if (first_octet <= 127) { + ip4_addr_set_u32(&sn_mask, PP_HTONL(0xff000000UL)); + } else if (first_octet >= 192) { + ip4_addr_set_u32(&sn_mask, PP_HTONL(0xffffff00UL)); + } else { + ip4_addr_set_u32(&sn_mask, PP_HTONL(0xffff0000UL)); + } + } + + ip4_addr_copy(gw_addr, dhcp->offered_gw_addr); + /* gateway address not given? */ + if (ip4_addr_isany_val(gw_addr)) { + /* copy network address */ + ip4_addr_get_network(&gw_addr, &dhcp->offered_ip_addr, &sn_mask); + /* use first host address on network as gateway */ + ip4_addr_set_u32(&gw_addr, ip4_addr_get_u32(&gw_addr) | PP_HTONL(0x00000001UL)); + } + +#if LWIP_DHCP_AUTOIP_COOP + if (dhcp->autoip_coop_state == DHCP_AUTOIP_COOP_STATE_ON) { + autoip_stop(netif); + dhcp->autoip_coop_state = DHCP_AUTOIP_COOP_STATE_OFF; + } +#endif /* LWIP_DHCP_AUTOIP_COOP */ + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_STATE, ("dhcp_bind(): IP: 0x%08"X32_F" SN: 0x%08"X32_F" GW: 0x%08"X32_F"\n", + ip4_addr_get_u32(&dhcp->offered_ip_addr), ip4_addr_get_u32(&sn_mask), ip4_addr_get_u32(&gw_addr))); + /* netif is now bound to DHCP leased address - set this before assigning the address + to ensure the callback can use dhcp_supplied_address() */ + dhcp_set_state(dhcp, DHCP_STATE_BOUND); + + netif_set_addr(netif, &dhcp->offered_ip_addr, &sn_mask, &gw_addr); + /* interface is used by routing now that an address is set */ +} + +/** + * @ingroup dhcp4 + * Renew an existing DHCP lease at the involved DHCP server. + * + * @param netif network interface which must renew its lease + */ +err_t +dhcp_renew(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + err_t result; + u16_t msecs; + u8_t i; + struct pbuf *p_out; + u16_t options_out_len; + + LWIP_ASSERT_CORE_LOCKED(); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_renew()\n")); + dhcp_set_state(dhcp, DHCP_STATE_RENEWING); + + /* create and initialize the DHCP message header */ + p_out = dhcp_create_msg(netif, dhcp, DHCP_REQUEST, &options_out_len); + if (p_out != NULL) { + struct dhcp_msg *msg_out = (struct dhcp_msg *)p_out->payload; + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN); + options_out_len = dhcp_option_short(options_out_len, msg_out->options, DHCP_MAX_MSG_LEN(netif)); + + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_PARAMETER_REQUEST_LIST, LWIP_ARRAYSIZE(dhcp_discover_request_options)); + for (i = 0; i < LWIP_ARRAYSIZE(dhcp_discover_request_options); i++) { + options_out_len = dhcp_option_byte(options_out_len, msg_out->options, dhcp_discover_request_options[i]); + } + +#if LWIP_NETIF_HOSTNAME + options_out_len = dhcp_option_hostname(options_out_len, msg_out->options, netif); +#endif /* LWIP_NETIF_HOSTNAME */ + + LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, DHCP_STATE_RENEWING, msg_out, DHCP_REQUEST, &options_out_len); + dhcp_option_trailer(options_out_len, msg_out->options, p_out); + + result = udp_sendto_if(dhcp_pcb, p_out, &dhcp->server_ip_addr, LWIP_IANA_PORT_DHCP_SERVER, netif); + pbuf_free(p_out); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_renew: RENEWING\n")); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("dhcp_renew: could not allocate DHCP request\n")); + result = ERR_MEM; + } + if (dhcp->tries < 255) { + dhcp->tries++; + } + /* back-off on retries, but to a maximum of 20 seconds */ + msecs = (u16_t)(dhcp->tries < 10 ? dhcp->tries * 2000 : 20 * 1000); + dhcp->request_timeout = (u16_t)((msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_renew(): set request timeout %"U16_F" msecs\n", msecs)); + return result; +} + +/** + * Rebind with a DHCP server for an existing DHCP lease. + * + * @param netif network interface which must rebind with a DHCP server + */ +static err_t +dhcp_rebind(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + err_t result; + u16_t msecs; + u8_t i; + struct pbuf *p_out; + u16_t options_out_len; + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_rebind()\n")); + dhcp_set_state(dhcp, DHCP_STATE_REBINDING); + + /* create and initialize the DHCP message header */ + p_out = dhcp_create_msg(netif, dhcp, DHCP_REQUEST, &options_out_len); + if (p_out != NULL) { + struct dhcp_msg *msg_out = (struct dhcp_msg *)p_out->payload; + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN); + options_out_len = dhcp_option_short(options_out_len, msg_out->options, DHCP_MAX_MSG_LEN(netif)); + + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_PARAMETER_REQUEST_LIST, LWIP_ARRAYSIZE(dhcp_discover_request_options)); + for (i = 0; i < LWIP_ARRAYSIZE(dhcp_discover_request_options); i++) { + options_out_len = dhcp_option_byte(options_out_len, msg_out->options, dhcp_discover_request_options[i]); + } + +#if LWIP_NETIF_HOSTNAME + options_out_len = dhcp_option_hostname(options_out_len, msg_out->options, netif); +#endif /* LWIP_NETIF_HOSTNAME */ + + LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, DHCP_STATE_REBINDING, msg_out, DHCP_DISCOVER, &options_out_len); + dhcp_option_trailer(options_out_len, msg_out->options, p_out); + + /* broadcast to server */ + result = udp_sendto_if(dhcp_pcb, p_out, IP_ADDR_BROADCAST, LWIP_IANA_PORT_DHCP_SERVER, netif); + pbuf_free(p_out); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_rebind: REBINDING\n")); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("dhcp_rebind: could not allocate DHCP request\n")); + result = ERR_MEM; + } + if (dhcp->tries < 255) { + dhcp->tries++; + } + msecs = (u16_t)(dhcp->tries < 10 ? dhcp->tries * 1000 : 10 * 1000); + dhcp->request_timeout = (u16_t)((msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_rebind(): set request timeout %"U16_F" msecs\n", msecs)); + return result; +} + +/** + * Enter REBOOTING state to verify an existing lease + * + * @param netif network interface which must reboot + */ +static err_t +dhcp_reboot(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + err_t result; + u16_t msecs; + u8_t i; + struct pbuf *p_out; + u16_t options_out_len; + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_reboot()\n")); + dhcp_set_state(dhcp, DHCP_STATE_REBOOTING); + + /* create and initialize the DHCP message header */ + p_out = dhcp_create_msg(netif, dhcp, DHCP_REQUEST, &options_out_len); + if (p_out != NULL) { + struct dhcp_msg *msg_out = (struct dhcp_msg *)p_out->payload; + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN); + options_out_len = dhcp_option_short(options_out_len, msg_out->options, DHCP_MAX_MSG_LEN_MIN_REQUIRED); + + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_REQUESTED_IP, 4); + options_out_len = dhcp_option_long(options_out_len, msg_out->options, lwip_ntohl(ip4_addr_get_u32(&dhcp->offered_ip_addr))); + + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_PARAMETER_REQUEST_LIST, LWIP_ARRAYSIZE(dhcp_discover_request_options)); + for (i = 0; i < LWIP_ARRAYSIZE(dhcp_discover_request_options); i++) { + options_out_len = dhcp_option_byte(options_out_len, msg_out->options, dhcp_discover_request_options[i]); + } + +#if LWIP_NETIF_HOSTNAME + options_out_len = dhcp_option_hostname(options_out_len, msg_out->options, netif); +#endif /* LWIP_NETIF_HOSTNAME */ + + LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, DHCP_STATE_REBOOTING, msg_out, DHCP_REQUEST, &options_out_len); + dhcp_option_trailer(options_out_len, msg_out->options, p_out); + + /* broadcast to server */ + result = udp_sendto_if(dhcp_pcb, p_out, IP_ADDR_BROADCAST, LWIP_IANA_PORT_DHCP_SERVER, netif); + pbuf_free(p_out); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_reboot: REBOOTING\n")); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("dhcp_reboot: could not allocate DHCP request\n")); + result = ERR_MEM; + } + if (dhcp->tries < 255) { + dhcp->tries++; + } + msecs = (u16_t)(dhcp->tries < 10 ? dhcp->tries * 1000 : 10 * 1000); + dhcp->request_timeout = (u16_t)((msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_reboot(): set request timeout %"U16_F" msecs\n", msecs)); + return result; +} + +/** + * @ingroup dhcp4 + * Release a DHCP lease and stop DHCP statemachine (and AUTOIP if LWIP_DHCP_AUTOIP_COOP). + * + * @param netif network interface + */ +void +dhcp_release_and_stop(struct netif *netif) +{ + struct dhcp *dhcp = netif_dhcp_data(netif); + ip_addr_t server_ip_addr; + + LWIP_ASSERT_CORE_LOCKED(); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_release_and_stop()\n")); + if (dhcp == NULL) { + return; + } + + /* already off? -> nothing to do */ + if (dhcp->state == DHCP_STATE_OFF) { + return; + } + + ip_addr_copy(server_ip_addr, dhcp->server_ip_addr); + + /* clean old DHCP offer */ + ip_addr_set_zero_ip4(&dhcp->server_ip_addr); + ip4_addr_set_zero(&dhcp->offered_ip_addr); + ip4_addr_set_zero(&dhcp->offered_sn_mask); + ip4_addr_set_zero(&dhcp->offered_gw_addr); +#if LWIP_DHCP_BOOTP_FILE + ip4_addr_set_zero(&dhcp->offered_si_addr); +#endif /* LWIP_DHCP_BOOTP_FILE */ + dhcp->offered_t0_lease = dhcp->offered_t1_renew = dhcp->offered_t2_rebind = 0; + dhcp->t1_renew_time = dhcp->t2_rebind_time = dhcp->lease_used = dhcp->t0_timeout = 0; + + /* send release message when current IP was assigned via DHCP */ + if (dhcp_supplied_address(netif)) { + /* create and initialize the DHCP message header */ + struct pbuf *p_out; + u16_t options_out_len; + p_out = dhcp_create_msg(netif, dhcp, DHCP_RELEASE, &options_out_len); + if (p_out != NULL) { + struct dhcp_msg *msg_out = (struct dhcp_msg *)p_out->payload; + options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_SERVER_ID, 4); + options_out_len = dhcp_option_long(options_out_len, msg_out->options, lwip_ntohl(ip4_addr_get_u32(ip_2_ip4(&server_ip_addr)))); + + LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, dhcp->state, msg_out, DHCP_RELEASE, &options_out_len); + dhcp_option_trailer(options_out_len, msg_out->options, p_out); + + udp_sendto_if(dhcp_pcb, p_out, &server_ip_addr, LWIP_IANA_PORT_DHCP_SERVER, netif); + pbuf_free(p_out); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_release: RELEASED, DHCP_STATE_OFF\n")); + } else { + /* sending release failed, but that's not a problem since the correct behaviour of dhcp does not rely on release */ + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("dhcp_release: could not allocate DHCP request\n")); + } + } + + /* remove IP address from interface (prevents routing from selecting this interface) */ + netif_set_addr(netif, IP4_ADDR_ANY4, IP4_ADDR_ANY4, IP4_ADDR_ANY4); + +#if LWIP_DHCP_AUTOIP_COOP + if (dhcp->autoip_coop_state == DHCP_AUTOIP_COOP_STATE_ON) { + autoip_stop(netif); + dhcp->autoip_coop_state = DHCP_AUTOIP_COOP_STATE_OFF; + } +#endif /* LWIP_DHCP_AUTOIP_COOP */ + + dhcp_set_state(dhcp, DHCP_STATE_OFF); + + if (dhcp->pcb_allocated != 0) { + dhcp_dec_pcb_refcount(); /* free DHCP PCB if not needed any more */ + dhcp->pcb_allocated = 0; + } +} + +/** + * @ingroup dhcp4 + * This function calls dhcp_release_and_stop() internally. + * @deprecated Use dhcp_release_and_stop() instead. + */ +err_t +dhcp_release(struct netif *netif) +{ + dhcp_release_and_stop(netif); + return ERR_OK; +} + +/** + * @ingroup dhcp4 + * This function calls dhcp_release_and_stop() internally. + * @deprecated Use dhcp_release_and_stop() instead. + */ +void +dhcp_stop(struct netif *netif) +{ + dhcp_release_and_stop(netif); +} + +/* + * Set the DHCP state of a DHCP client. + * + * If the state changed, reset the number of tries. + */ +static void +dhcp_set_state(struct dhcp *dhcp, u8_t new_state) +{ + if (new_state != dhcp->state) { + dhcp->state = new_state; + dhcp->tries = 0; + dhcp->request_timeout = 0; + } +} + +/* + * Concatenate an option type and length field to the outgoing + * DHCP message. + * + */ +static u16_t +dhcp_option(u16_t options_out_len, u8_t *options, u8_t option_type, u8_t option_len) +{ + LWIP_ASSERT("dhcp_option: options_out_len + 2 + option_len <= DHCP_OPTIONS_LEN", options_out_len + 2U + option_len <= DHCP_OPTIONS_LEN); + options[options_out_len++] = option_type; + options[options_out_len++] = option_len; + return options_out_len; +} +/* + * Concatenate a single byte to the outgoing DHCP message. + * + */ +static u16_t +dhcp_option_byte(u16_t options_out_len, u8_t *options, u8_t value) +{ + LWIP_ASSERT("dhcp_option_byte: options_out_len < DHCP_OPTIONS_LEN", options_out_len < DHCP_OPTIONS_LEN); + options[options_out_len++] = value; + return options_out_len; +} + +static u16_t +dhcp_option_short(u16_t options_out_len, u8_t *options, u16_t value) +{ + LWIP_ASSERT("dhcp_option_short: options_out_len + 2 <= DHCP_OPTIONS_LEN", options_out_len + 2U <= DHCP_OPTIONS_LEN); + options[options_out_len++] = (u8_t)((value & 0xff00U) >> 8); + options[options_out_len++] = (u8_t) (value & 0x00ffU); + return options_out_len; +} + +static u16_t +dhcp_option_long(u16_t options_out_len, u8_t *options, u32_t value) +{ + LWIP_ASSERT("dhcp_option_long: options_out_len + 4 <= DHCP_OPTIONS_LEN", options_out_len + 4U <= DHCP_OPTIONS_LEN); + options[options_out_len++] = (u8_t)((value & 0xff000000UL) >> 24); + options[options_out_len++] = (u8_t)((value & 0x00ff0000UL) >> 16); + options[options_out_len++] = (u8_t)((value & 0x0000ff00UL) >> 8); + options[options_out_len++] = (u8_t)((value & 0x000000ffUL)); + return options_out_len; +} + +#if LWIP_NETIF_HOSTNAME +static u16_t +dhcp_option_hostname(u16_t options_out_len, u8_t *options, struct netif *netif) +{ + if (netif->hostname != NULL) { + size_t namelen = strlen(netif->hostname); + if (namelen > 0) { + size_t len; + const char *p = netif->hostname; + /* Shrink len to available bytes (need 2 bytes for OPTION_HOSTNAME + and 1 byte for trailer) */ + size_t available = DHCP_OPTIONS_LEN - options_out_len - 3; + LWIP_ASSERT("DHCP: hostname is too long!", namelen <= available); + len = LWIP_MIN(namelen, available); + LWIP_ASSERT("DHCP: hostname is too long!", len <= 0xFF); + options_out_len = dhcp_option(options_out_len, options, DHCP_OPTION_HOSTNAME, (u8_t)len); + while (len--) { + options_out_len = dhcp_option_byte(options_out_len, options, *p++); + } + } + } + return options_out_len; +} +#endif /* LWIP_NETIF_HOSTNAME */ + +/** + * Extract the DHCP message and the DHCP options. + * + * Extract the DHCP message and the DHCP options, each into a contiguous + * piece of memory. As a DHCP message is variable sized by its options, + * and also allows overriding some fields for options, the easy approach + * is to first unfold the options into a contiguous piece of memory, and + * use that further on. + * + */ +static err_t +dhcp_parse_reply(struct pbuf *p, struct dhcp *dhcp) +{ + u8_t *options; + u16_t offset; + u16_t offset_max; + u16_t options_idx; + u16_t options_idx_max; + struct pbuf *q; + int parse_file_as_options = 0; + int parse_sname_as_options = 0; + struct dhcp_msg *msg_in; +#if LWIP_DHCP_BOOTP_FILE + int file_overloaded = 0; +#endif + + LWIP_UNUSED_ARG(dhcp); + + /* clear received options */ + dhcp_clear_all_options(dhcp); + /* check that beginning of dhcp_msg (up to and including chaddr) is in first pbuf */ + if (p->len < DHCP_SNAME_OFS) { + return ERR_BUF; + } + msg_in = (struct dhcp_msg *)p->payload; +#if LWIP_DHCP_BOOTP_FILE + /* clear boot file name */ + dhcp->boot_file_name[0] = 0; +#endif /* LWIP_DHCP_BOOTP_FILE */ + + /* parse options */ + + /* start with options field */ + options_idx = DHCP_OPTIONS_OFS; + /* parse options to the end of the received packet */ + options_idx_max = p->tot_len; +again: + q = p; + while ((q != NULL) && (options_idx >= q->len)) { + options_idx = (u16_t)(options_idx - q->len); + options_idx_max = (u16_t)(options_idx_max - q->len); + q = q->next; + } + if (q == NULL) { + return ERR_BUF; + } + offset = options_idx; + offset_max = options_idx_max; + options = (u8_t *)q->payload; + /* at least 1 byte to read and no end marker, then at least 3 bytes to read? */ + while ((q != NULL) && (offset < offset_max) && (options[offset] != DHCP_OPTION_END)) { + u8_t op = options[offset]; + u8_t len; + u8_t decode_len = 0; + int decode_idx = -1; + u16_t val_offset = (u16_t)(offset + 2); + if (val_offset < offset) { + /* overflow */ + return ERR_BUF; + } + /* len byte might be in the next pbuf */ + if ((offset + 1) < q->len) { + len = options[offset + 1]; + } else { + len = (q->next != NULL ? ((u8_t *)q->next->payload)[0] : 0); + } + /* LWIP_DEBUGF(DHCP_DEBUG, ("msg_offset=%"U16_F", q->len=%"U16_F, msg_offset, q->len)); */ + decode_len = len; + switch (op) { + /* case(DHCP_OPTION_END): handled above */ + case (DHCP_OPTION_PAD): + /* special option: no len encoded */ + decode_len = len = 0; + /* will be increased below */ + break; + case (DHCP_OPTION_SUBNET_MASK): + LWIP_ERROR("len == 4", len == 4, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_SUBNET_MASK; + break; + case (DHCP_OPTION_ROUTER): + decode_len = 4; /* only copy the first given router */ + LWIP_ERROR("len >= decode_len", len >= decode_len, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_ROUTER; + break; +#if LWIP_DHCP_PROVIDE_DNS_SERVERS + case (DHCP_OPTION_DNS_SERVER): + /* special case: there might be more than one server */ + LWIP_ERROR("len %% 4 == 0", len % 4 == 0, return ERR_VAL;); + /* limit number of DNS servers */ + decode_len = LWIP_MIN(len, 4 * DNS_MAX_SERVERS); + LWIP_ERROR("len >= decode_len", len >= decode_len, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_DNS_SERVER; + break; +#endif /* LWIP_DHCP_PROVIDE_DNS_SERVERS */ + case (DHCP_OPTION_LEASE_TIME): + LWIP_ERROR("len == 4", len == 4, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_LEASE_TIME; + break; +#if LWIP_DHCP_GET_NTP_SRV + case (DHCP_OPTION_NTP): + /* special case: there might be more than one server */ + LWIP_ERROR("len %% 4 == 0", len % 4 == 0, return ERR_VAL;); + /* limit number of NTP servers */ + decode_len = LWIP_MIN(len, 4 * LWIP_DHCP_MAX_NTP_SERVERS); + LWIP_ERROR("len >= decode_len", len >= decode_len, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_NTP_SERVER; + break; +#endif /* LWIP_DHCP_GET_NTP_SRV*/ + case (DHCP_OPTION_OVERLOAD): + LWIP_ERROR("len == 1", len == 1, return ERR_VAL;); + /* decode overload only in options, not in file/sname: invalid packet */ + LWIP_ERROR("overload in file/sname", options_idx == DHCP_OPTIONS_OFS, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_OVERLOAD; + break; + case (DHCP_OPTION_MESSAGE_TYPE): + LWIP_ERROR("len == 1", len == 1, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_MSG_TYPE; + break; + case (DHCP_OPTION_SERVER_ID): + LWIP_ERROR("len == 4", len == 4, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_SERVER_ID; + break; + case (DHCP_OPTION_T1): + LWIP_ERROR("len == 4", len == 4, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_T1; + break; + case (DHCP_OPTION_T2): + LWIP_ERROR("len == 4", len == 4, return ERR_VAL;); + decode_idx = DHCP_OPTION_IDX_T2; + break; + default: + decode_len = 0; + LWIP_DEBUGF(DHCP_DEBUG, ("skipping option %"U16_F" in options\n", (u16_t)op)); + LWIP_HOOK_DHCP_PARSE_OPTION(ip_current_netif(), dhcp, dhcp->state, msg_in, + dhcp_option_given(dhcp, DHCP_OPTION_IDX_MSG_TYPE) ? (u8_t)dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_MSG_TYPE) : 0, + op, len, q, val_offset); + break; + } + if (op == DHCP_OPTION_PAD) { + offset++; + } else { + if (offset + len + 2 > 0xFFFF) { + /* overflow */ + return ERR_BUF; + } + offset = (u16_t)(offset + len + 2); + if (decode_len > 0) { + u32_t value = 0; + u16_t copy_len; +decode_next: + LWIP_ASSERT("check decode_idx", decode_idx >= 0 && decode_idx < DHCP_OPTION_IDX_MAX); + if (!dhcp_option_given(dhcp, decode_idx)) { + copy_len = LWIP_MIN(decode_len, 4); + if (pbuf_copy_partial(q, &value, copy_len, val_offset) != copy_len) { + return ERR_BUF; + } + if (decode_len > 4) { + /* decode more than one u32_t */ + u16_t next_val_offset; + LWIP_ERROR("decode_len %% 4 == 0", decode_len % 4 == 0, return ERR_VAL;); + dhcp_got_option(dhcp, decode_idx); + dhcp_set_option_value(dhcp, decode_idx, lwip_htonl(value)); + decode_len = (u8_t)(decode_len - 4); + next_val_offset = (u16_t)(val_offset + 4); + if (next_val_offset < val_offset) { + /* overflow */ + return ERR_BUF; + } + val_offset = next_val_offset; + decode_idx++; + goto decode_next; + } else if (decode_len == 4) { + value = lwip_ntohl(value); + } else { + LWIP_ERROR("invalid decode_len", decode_len == 1, return ERR_VAL;); + value = ((u8_t *)&value)[0]; + } + dhcp_got_option(dhcp, decode_idx); + dhcp_set_option_value(dhcp, decode_idx, value); + } + } + } + if (offset >= q->len) { + offset = (u16_t)(offset - q->len); + offset_max = (u16_t)(offset_max - q->len); + if (offset < offset_max) { + q = q->next; + LWIP_ERROR("next pbuf was null", q != NULL, return ERR_VAL;); + options = (u8_t *)q->payload; + } else { + /* We've run out of bytes, probably no end marker. Don't proceed. */ + return ERR_BUF; + } + } + } + /* is this an overloaded message? */ + if (dhcp_option_given(dhcp, DHCP_OPTION_IDX_OVERLOAD)) { + u32_t overload = dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_OVERLOAD); + dhcp_clear_option(dhcp, DHCP_OPTION_IDX_OVERLOAD); + if (overload == DHCP_OVERLOAD_FILE) { + parse_file_as_options = 1; + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("overloaded file field\n")); + } else if (overload == DHCP_OVERLOAD_SNAME) { + parse_sname_as_options = 1; + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("overloaded sname field\n")); + } else if (overload == DHCP_OVERLOAD_SNAME_FILE) { + parse_sname_as_options = 1; + parse_file_as_options = 1; + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("overloaded sname and file field\n")); + } else { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("invalid overload option: %d\n", (int)overload)); + } + } + if (parse_file_as_options) { + /* if both are overloaded, parse file first and then sname (RFC 2131 ch. 4.1) */ + parse_file_as_options = 0; + options_idx = DHCP_FILE_OFS; + options_idx_max = DHCP_FILE_OFS + DHCP_FILE_LEN; +#if LWIP_DHCP_BOOTP_FILE + file_overloaded = 1; +#endif + goto again; + } else if (parse_sname_as_options) { + parse_sname_as_options = 0; + options_idx = DHCP_SNAME_OFS; + options_idx_max = DHCP_SNAME_OFS + DHCP_SNAME_LEN; + goto again; + } +#if LWIP_DHCP_BOOTP_FILE + if (!file_overloaded) { + /* only do this for ACK messages */ + if (dhcp_option_given(dhcp, DHCP_OPTION_IDX_MSG_TYPE) && + (dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_MSG_TYPE) == DHCP_ACK)) + /* copy bootp file name, don't care for sname (server hostname) */ + if (pbuf_copy_partial(p, dhcp->boot_file_name, DHCP_FILE_LEN-1, DHCP_FILE_OFS) != (DHCP_FILE_LEN-1)) { + return ERR_BUF; + } + /* make sure the string is really NULL-terminated */ + dhcp->boot_file_name[DHCP_FILE_LEN-1] = 0; + } +#endif /* LWIP_DHCP_BOOTP_FILE */ + return ERR_OK; +} + +/** + * If an incoming DHCP message is in response to us, then trigger the state machine + */ +static void +dhcp_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port) +{ + struct netif *netif = ip_current_input_netif(); + struct dhcp *dhcp = netif_dhcp_data(netif); + struct dhcp_msg *reply_msg = (struct dhcp_msg *)p->payload; + u8_t msg_type; + u8_t i; + struct dhcp_msg *msg_in; + + LWIP_UNUSED_ARG(arg); + + /* Caught DHCP message from netif that does not have DHCP enabled? -> not interested */ + if ((dhcp == NULL) || (dhcp->pcb_allocated == 0)) { + goto free_pbuf_and_return; + } + + LWIP_ASSERT("invalid server address type", IP_IS_V4(addr)); + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_recv(pbuf = %p) from DHCP server %"U16_F".%"U16_F".%"U16_F".%"U16_F" port %"U16_F"\n", (void *)p, + ip4_addr1_16(ip_2_ip4(addr)), ip4_addr2_16(ip_2_ip4(addr)), ip4_addr3_16(ip_2_ip4(addr)), ip4_addr4_16(ip_2_ip4(addr)), port)); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("pbuf->len = %"U16_F"\n", p->len)); + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("pbuf->tot_len = %"U16_F"\n", p->tot_len)); + /* prevent warnings about unused arguments */ + LWIP_UNUSED_ARG(pcb); + LWIP_UNUSED_ARG(addr); + LWIP_UNUSED_ARG(port); + + if (p->len < DHCP_MIN_REPLY_LEN) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, ("DHCP reply message or pbuf too short\n")); + goto free_pbuf_and_return; + } + + if (reply_msg->op != DHCP_BOOTREPLY) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, ("not a DHCP reply message, but type %"U16_F"\n", (u16_t)reply_msg->op)); + goto free_pbuf_and_return; + } + /* iterate through hardware address and match against DHCP message */ + for (i = 0; i < netif->hwaddr_len && i < LWIP_MIN(DHCP_CHADDR_LEN, NETIF_MAX_HWADDR_LEN); i++) { + if (netif->hwaddr[i] != reply_msg->chaddr[i]) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, + ("netif->hwaddr[%"U16_F"]==%02"X16_F" != reply_msg->chaddr[%"U16_F"]==%02"X16_F"\n", + (u16_t)i, (u16_t)netif->hwaddr[i], (u16_t)i, (u16_t)reply_msg->chaddr[i])); + goto free_pbuf_and_return; + } + } + /* match transaction ID against what we expected */ + if (lwip_ntohl(reply_msg->xid) != dhcp->xid) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, + ("transaction id mismatch reply_msg->xid(%"X32_F")!=dhcp->xid(%"X32_F")\n", lwip_ntohl(reply_msg->xid), dhcp->xid)); + goto free_pbuf_and_return; + } + /* option fields could be unfold? */ + if (dhcp_parse_reply(p, dhcp) != ERR_OK) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, + ("problem unfolding DHCP message - too short on memory?\n")); + goto free_pbuf_and_return; + } + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("searching DHCP_OPTION_MESSAGE_TYPE\n")); + /* obtain pointer to DHCP message type */ + if (!dhcp_option_given(dhcp, DHCP_OPTION_IDX_MSG_TYPE)) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, ("DHCP_OPTION_MESSAGE_TYPE option not found\n")); + goto free_pbuf_and_return; + } + + msg_in = (struct dhcp_msg *)p->payload; + /* read DHCP message type */ + msg_type = (u8_t)dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_MSG_TYPE); + /* message type is DHCP ACK? */ + if (msg_type == DHCP_ACK) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("DHCP_ACK received\n")); + /* in requesting state? */ + if (dhcp->state == DHCP_STATE_REQUESTING) { + dhcp_handle_ack(netif, msg_in); +#if DHCP_DOES_ARP_CHECK + if ((netif->flags & NETIF_FLAG_ETHARP) != 0) { + /* check if the acknowledged lease address is already in use */ + dhcp_check(netif); + } else { + /* bind interface to the acknowledged lease address */ + dhcp_bind(netif); + } +#else + /* bind interface to the acknowledged lease address */ + dhcp_bind(netif); +#endif + } + /* already bound to the given lease address? */ + else if ((dhcp->state == DHCP_STATE_REBOOTING) || (dhcp->state == DHCP_STATE_REBINDING) || + (dhcp->state == DHCP_STATE_RENEWING)) { + dhcp_handle_ack(netif, msg_in); + dhcp_bind(netif); + } + } + /* received a DHCP_NAK in appropriate state? */ + else if ((msg_type == DHCP_NAK) && + ((dhcp->state == DHCP_STATE_REBOOTING) || (dhcp->state == DHCP_STATE_REQUESTING) || + (dhcp->state == DHCP_STATE_REBINDING) || (dhcp->state == DHCP_STATE_RENEWING ))) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("DHCP_NAK received\n")); + dhcp_handle_nak(netif); + } + /* received a DHCP_OFFER in DHCP_STATE_SELECTING state? */ + else if ((msg_type == DHCP_OFFER) && (dhcp->state == DHCP_STATE_SELECTING)) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("DHCP_OFFER received in DHCP_STATE_SELECTING state\n")); + /* remember offered lease */ + dhcp_handle_offer(netif, msg_in); + } + +free_pbuf_and_return: + pbuf_free(p); +} + +/** + * Create a DHCP request, fill in common headers + * + * @param netif the netif under DHCP control + * @param dhcp dhcp control struct + * @param message_type message type of the request + */ +static struct pbuf * +dhcp_create_msg(struct netif *netif, struct dhcp *dhcp, u8_t message_type, u16_t *options_out_len) +{ + u16_t i; + struct pbuf *p_out; + struct dhcp_msg *msg_out; + u16_t options_out_len_loc; + +#ifndef DHCP_GLOBAL_XID + /** default global transaction identifier starting value (easy to match + * with a packet analyser). We simply increment for each new request. + * Predefine DHCP_GLOBAL_XID to a better value or a function call to generate one + * at runtime, any supporting function prototypes can be defined in DHCP_GLOBAL_XID_HEADER */ +#if DHCP_CREATE_RAND_XID && defined(LWIP_RAND) + static u32_t xid; +#else /* DHCP_CREATE_RAND_XID && defined(LWIP_RAND) */ + static u32_t xid = 0xABCD0000; +#endif /* DHCP_CREATE_RAND_XID && defined(LWIP_RAND) */ +#else + if (!xid_initialised) { + xid = DHCP_GLOBAL_XID; + xid_initialised = !xid_initialised; + } +#endif + LWIP_ERROR("dhcp_create_msg: netif != NULL", (netif != NULL), return NULL;); + LWIP_ERROR("dhcp_create_msg: dhcp != NULL", (dhcp != NULL), return NULL;); + p_out = pbuf_alloc(PBUF_TRANSPORT, sizeof(struct dhcp_msg), PBUF_RAM); + if (p_out == NULL) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, + ("dhcp_create_msg(): could not allocate pbuf\n")); + return NULL; + } + LWIP_ASSERT("dhcp_create_msg: check that first pbuf can hold struct dhcp_msg", + (p_out->len >= sizeof(struct dhcp_msg))); + + /* DHCP_REQUEST should reuse 'xid' from DHCPOFFER */ + if ((message_type != DHCP_REQUEST) || (dhcp->state == DHCP_STATE_REBOOTING)) { + /* reuse transaction identifier in retransmissions */ + if (dhcp->tries == 0) { +#if DHCP_CREATE_RAND_XID && defined(LWIP_RAND) + xid = LWIP_RAND(); +#else /* DHCP_CREATE_RAND_XID && defined(LWIP_RAND) */ + xid++; +#endif /* DHCP_CREATE_RAND_XID && defined(LWIP_RAND) */ + } + dhcp->xid = xid; + } + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, + ("transaction id xid(%"X32_F")\n", xid)); + + msg_out = (struct dhcp_msg *)p_out->payload; + memset(msg_out, 0, sizeof(struct dhcp_msg)); + + msg_out->op = DHCP_BOOTREQUEST; + /* @todo: make link layer independent */ + msg_out->htype = LWIP_IANA_HWTYPE_ETHERNET; + msg_out->hlen = netif->hwaddr_len; + msg_out->xid = lwip_htonl(dhcp->xid); + /* we don't need the broadcast flag since we can receive unicast traffic + before being fully configured! */ + /* set ciaddr to netif->ip_addr based on message_type and state */ + if ((message_type == DHCP_INFORM) || (message_type == DHCP_DECLINE) || (message_type == DHCP_RELEASE) || + ((message_type == DHCP_REQUEST) && /* DHCP_STATE_BOUND not used for sending! */ + ((dhcp->state == DHCP_STATE_RENEWING) || dhcp->state == DHCP_STATE_REBINDING))) { + ip4_addr_copy(msg_out->ciaddr, *netif_ip4_addr(netif)); + } + for (i = 0; i < LWIP_MIN(DHCP_CHADDR_LEN, NETIF_MAX_HWADDR_LEN); i++) { + /* copy netif hardware address (padded with zeroes through memset already) */ + msg_out->chaddr[i] = netif->hwaddr[i]; + } + msg_out->cookie = PP_HTONL(DHCP_MAGIC_COOKIE); + /* Add option MESSAGE_TYPE */ + options_out_len_loc = dhcp_option(0, msg_out->options, DHCP_OPTION_MESSAGE_TYPE, DHCP_OPTION_MESSAGE_TYPE_LEN); + options_out_len_loc = dhcp_option_byte(options_out_len_loc, msg_out->options, message_type); + if (options_out_len) { + *options_out_len = options_out_len_loc; + } + return p_out; +} + +/** + * Add a DHCP message trailer + * + * Adds the END option to the DHCP message, and if + * necessary, up to three padding bytes. + */ +static void +dhcp_option_trailer(u16_t options_out_len, u8_t *options, struct pbuf *p_out) +{ + options[options_out_len++] = DHCP_OPTION_END; + /* packet is too small, or not 4 byte aligned? */ + while (((options_out_len < DHCP_MIN_OPTIONS_LEN) || (options_out_len & 3)) && + (options_out_len < DHCP_OPTIONS_LEN)) { + /* add a fill/padding byte */ + options[options_out_len++] = 0; + } + /* shrink the pbuf to the actual content length */ + pbuf_realloc(p_out, (u16_t)(sizeof(struct dhcp_msg) - DHCP_OPTIONS_LEN + options_out_len)); +} + +/** check if DHCP supplied netif->ip_addr + * + * @param netif the netif to check + * @return 1 if DHCP supplied netif->ip_addr (states BOUND or RENEWING), + * 0 otherwise + */ +u8_t +dhcp_supplied_address(const struct netif *netif) +{ + if ((netif != NULL) && (netif_dhcp_data(netif) != NULL)) { + struct dhcp *dhcp = netif_dhcp_data(netif); + return (dhcp->state == DHCP_STATE_BOUND) || (dhcp->state == DHCP_STATE_RENEWING) || + (dhcp->state == DHCP_STATE_REBINDING); + } + return 0; +} + +#endif /* LWIP_IPV4 && LWIP_DHCP */ diff --git a/Other/tun2socks/core/c/core/ipv4/etharp.c b/Other/tun2socks/core/c/core/ipv4/etharp.c new file mode 100644 index 0000000..442aac0 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv4/etharp.c @@ -0,0 +1,1204 @@ +/** + * @file + * Address Resolution Protocol module for IP over Ethernet + * + * Functionally, ARP is divided into two parts. The first maps an IP address + * to a physical address when sending a packet, and the second part answers + * requests from other machines for our physical address. + * + * This implementation complies with RFC 826 (Ethernet ARP). It supports + * Gratuitious ARP from RFC3220 (IP Mobility Support for IPv4) section 4.6 + * if an interface calls etharp_gratuitous(our_netif) upon address change. + */ + +/* + * Copyright (c) 2001-2003 Swedish Institute of Computer Science. + * Copyright (c) 2003-2004 Leon Woestenberg + * Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV4 && LWIP_ARP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/etharp.h" +#include "lwip/stats.h" +#include "lwip/snmp.h" +#include "lwip/dhcp.h" +#include "lwip/autoip.h" +#include "lwip/prot/iana.h" +#include "netif/ethernet.h" + +#include + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif + +/** Re-request a used ARP entry 1 minute before it would expire to prevent + * breaking a steadily used connection because the ARP entry timed out. */ +#define ARP_AGE_REREQUEST_USED_UNICAST (ARP_MAXAGE - 30) +#define ARP_AGE_REREQUEST_USED_BROADCAST (ARP_MAXAGE - 15) + +/** the time an ARP entry stays pending after first request, + * for ARP_TMR_INTERVAL = 1000, this is + * 10 seconds. + * + * @internal Keep this number at least 2, otherwise it might + * run out instantly if the timeout occurs directly after a request. + */ +#define ARP_MAXPENDING 5 + +/** ARP states */ +enum etharp_state { + ETHARP_STATE_EMPTY = 0, + ETHARP_STATE_PENDING, + ETHARP_STATE_STABLE, + ETHARP_STATE_STABLE_REREQUESTING_1, + ETHARP_STATE_STABLE_REREQUESTING_2 +#if ETHARP_SUPPORT_STATIC_ENTRIES + , ETHARP_STATE_STATIC +#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */ +}; + +struct etharp_entry { +#if ARP_QUEUEING + /** Pointer to queue of pending outgoing packets on this ARP entry. */ + struct etharp_q_entry *q; +#else /* ARP_QUEUEING */ + /** Pointer to a single pending outgoing packet on this ARP entry. */ + struct pbuf *q; +#endif /* ARP_QUEUEING */ + ip4_addr_t ipaddr; + struct netif *netif; + struct eth_addr ethaddr; + u16_t ctime; + u8_t state; +}; + +static struct etharp_entry arp_table[ARP_TABLE_SIZE]; + +#if !LWIP_NETIF_HWADDRHINT +static netif_addr_idx_t etharp_cached_entry; +#endif /* !LWIP_NETIF_HWADDRHINT */ + +/** Try hard to create a new entry - we want the IP address to appear in + the cache (even if this means removing an active entry or so). */ +#define ETHARP_FLAG_TRY_HARD 1 +#define ETHARP_FLAG_FIND_ONLY 2 +#if ETHARP_SUPPORT_STATIC_ENTRIES +#define ETHARP_FLAG_STATIC_ENTRY 4 +#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */ + +#if LWIP_NETIF_HWADDRHINT +#define ETHARP_SET_ADDRHINT(netif, addrhint) do { if (((netif) != NULL) && ((netif)->hints != NULL)) { \ + (netif)->hints->addr_hint = (addrhint); }} while(0) +#else /* LWIP_NETIF_HWADDRHINT */ +#define ETHARP_SET_ADDRHINT(netif, addrhint) (etharp_cached_entry = (addrhint)) +#endif /* LWIP_NETIF_HWADDRHINT */ + + +/* Check for maximum ARP_TABLE_SIZE */ +#if (ARP_TABLE_SIZE > NETIF_ADDR_IDX_MAX) +#error "ARP_TABLE_SIZE must fit in an s16_t, you have to reduce it in your lwipopts.h" +#endif + + +static err_t etharp_request_dst(struct netif *netif, const ip4_addr_t *ipaddr, const struct eth_addr *hw_dst_addr); +static err_t etharp_raw(struct netif *netif, + const struct eth_addr *ethsrc_addr, const struct eth_addr *ethdst_addr, + const struct eth_addr *hwsrc_addr, const ip4_addr_t *ipsrc_addr, + const struct eth_addr *hwdst_addr, const ip4_addr_t *ipdst_addr, + const u16_t opcode); + +#if ARP_QUEUEING +/** + * Free a complete queue of etharp entries + * + * @param q a qeueue of etharp_q_entry's to free + */ +static void +free_etharp_q(struct etharp_q_entry *q) +{ + struct etharp_q_entry *r; + LWIP_ASSERT("q != NULL", q != NULL); + while (q) { + r = q; + q = q->next; + LWIP_ASSERT("r->p != NULL", (r->p != NULL)); + pbuf_free(r->p); + memp_free(MEMP_ARP_QUEUE, r); + } +} +#else /* ARP_QUEUEING */ + +/** Compatibility define: free the queued pbuf */ +#define free_etharp_q(q) pbuf_free(q) + +#endif /* ARP_QUEUEING */ + +/** Clean up ARP table entries */ +static void +etharp_free_entry(int i) +{ + /* remove from SNMP ARP index tree */ + mib2_remove_arp_entry(arp_table[i].netif, &arp_table[i].ipaddr); + /* and empty packet queue */ + if (arp_table[i].q != NULL) { + /* remove all queued packets */ + LWIP_DEBUGF(ETHARP_DEBUG, ("etharp_free_entry: freeing entry %"U16_F", packet queue %p.\n", (u16_t)i, (void *)(arp_table[i].q))); + free_etharp_q(arp_table[i].q); + arp_table[i].q = NULL; + } + /* recycle entry for re-use */ + arp_table[i].state = ETHARP_STATE_EMPTY; +#ifdef LWIP_DEBUG + /* for debugging, clean out the complete entry */ + arp_table[i].ctime = 0; + arp_table[i].netif = NULL; + ip4_addr_set_zero(&arp_table[i].ipaddr); + arp_table[i].ethaddr = ethzero; +#endif /* LWIP_DEBUG */ +} + +/** + * Clears expired entries in the ARP table. + * + * This function should be called every ARP_TMR_INTERVAL milliseconds (1 second), + * in order to expire entries in the ARP table. + */ +void +etharp_tmr(void) +{ + int i; + + LWIP_DEBUGF(ETHARP_DEBUG, ("etharp_timer\n")); + /* remove expired entries from the ARP table */ + for (i = 0; i < ARP_TABLE_SIZE; ++i) { + u8_t state = arp_table[i].state; + if (state != ETHARP_STATE_EMPTY +#if ETHARP_SUPPORT_STATIC_ENTRIES + && (state != ETHARP_STATE_STATIC) +#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */ + ) { + arp_table[i].ctime++; + if ((arp_table[i].ctime >= ARP_MAXAGE) || + ((arp_table[i].state == ETHARP_STATE_PENDING) && + (arp_table[i].ctime >= ARP_MAXPENDING))) { + /* pending or stable entry has become old! */ + LWIP_DEBUGF(ETHARP_DEBUG, ("etharp_timer: expired %s entry %d.\n", + arp_table[i].state >= ETHARP_STATE_STABLE ? "stable" : "pending", i)); + /* clean up entries that have just been expired */ + etharp_free_entry(i); + } else if (arp_table[i].state == ETHARP_STATE_STABLE_REREQUESTING_1) { + /* Don't send more than one request every 2 seconds. */ + arp_table[i].state = ETHARP_STATE_STABLE_REREQUESTING_2; + } else if (arp_table[i].state == ETHARP_STATE_STABLE_REREQUESTING_2) { + /* Reset state to stable, so that the next transmitted packet will + re-send an ARP request. */ + arp_table[i].state = ETHARP_STATE_STABLE; + } else if (arp_table[i].state == ETHARP_STATE_PENDING) { + /* still pending, resend an ARP query */ + etharp_request(arp_table[i].netif, &arp_table[i].ipaddr); + } + } + } +} + +/** + * Search the ARP table for a matching or new entry. + * + * If an IP address is given, return a pending or stable ARP entry that matches + * the address. If no match is found, create a new entry with this address set, + * but in state ETHARP_EMPTY. The caller must check and possibly change the + * state of the returned entry. + * + * If ipaddr is NULL, return a initialized new entry in state ETHARP_EMPTY. + * + * In all cases, attempt to create new entries from an empty entry. If no + * empty entries are available and ETHARP_FLAG_TRY_HARD flag is set, recycle + * old entries. Heuristic choose the least important entry for recycling. + * + * @param ipaddr IP address to find in ARP cache, or to add if not found. + * @param flags See @ref etharp_state + * @param netif netif related to this address (used for NETIF_HWADDRHINT) + * + * @return The ARP entry index that matched or is created, ERR_MEM if no + * entry is found or could be recycled. + */ +static s16_t +etharp_find_entry(const ip4_addr_t *ipaddr, u8_t flags, struct netif *netif) +{ + s16_t old_pending = ARP_TABLE_SIZE, old_stable = ARP_TABLE_SIZE; + s16_t empty = ARP_TABLE_SIZE; + s16_t i = 0; + /* oldest entry with packets on queue */ + s16_t old_queue = ARP_TABLE_SIZE; + /* its age */ + u16_t age_queue = 0, age_pending = 0, age_stable = 0; + + LWIP_UNUSED_ARG(netif); + + /** + * a) do a search through the cache, remember candidates + * b) select candidate entry + * c) create new entry + */ + + /* a) in a single search sweep, do all of this + * 1) remember the first empty entry (if any) + * 2) remember the oldest stable entry (if any) + * 3) remember the oldest pending entry without queued packets (if any) + * 4) remember the oldest pending entry with queued packets (if any) + * 5) search for a matching IP entry, either pending or stable + * until 5 matches, or all entries are searched for. + */ + + for (i = 0; i < ARP_TABLE_SIZE; ++i) { + u8_t state = arp_table[i].state; + /* no empty entry found yet and now we do find one? */ + if ((empty == ARP_TABLE_SIZE) && (state == ETHARP_STATE_EMPTY)) { + LWIP_DEBUGF(ETHARP_DEBUG, ("etharp_find_entry: found empty entry %d\n", (int)i)); + /* remember first empty entry */ + empty = i; + } else if (state != ETHARP_STATE_EMPTY) { + LWIP_ASSERT("state == ETHARP_STATE_PENDING || state >= ETHARP_STATE_STABLE", + state == ETHARP_STATE_PENDING || state >= ETHARP_STATE_STABLE); + /* if given, does IP address match IP address in ARP entry? */ + if (ipaddr && ip4_addr_cmp(ipaddr, &arp_table[i].ipaddr) +#if ETHARP_TABLE_MATCH_NETIF + && ((netif == NULL) || (netif == arp_table[i].netif)) +#endif /* ETHARP_TABLE_MATCH_NETIF */ + ) { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_find_entry: found matching entry %d\n", (int)i)); + /* found exact IP address match, simply bail out */ + return i; + } + /* pending entry? */ + if (state == ETHARP_STATE_PENDING) { + /* pending with queued packets? */ + if (arp_table[i].q != NULL) { + if (arp_table[i].ctime >= age_queue) { + old_queue = i; + age_queue = arp_table[i].ctime; + } + } else + /* pending without queued packets? */ + { + if (arp_table[i].ctime >= age_pending) { + old_pending = i; + age_pending = arp_table[i].ctime; + } + } + /* stable entry? */ + } else if (state >= ETHARP_STATE_STABLE) { +#if ETHARP_SUPPORT_STATIC_ENTRIES + /* don't record old_stable for static entries since they never expire */ + if (state < ETHARP_STATE_STATIC) +#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */ + { + /* remember entry with oldest stable entry in oldest, its age in maxtime */ + if (arp_table[i].ctime >= age_stable) { + old_stable = i; + age_stable = arp_table[i].ctime; + } + } + } + } + } + /* { we have no match } => try to create a new entry */ + + /* don't create new entry, only search? */ + if (((flags & ETHARP_FLAG_FIND_ONLY) != 0) || + /* or no empty entry found and not allowed to recycle? */ + ((empty == ARP_TABLE_SIZE) && ((flags & ETHARP_FLAG_TRY_HARD) == 0))) { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_find_entry: no empty entry found and not allowed to recycle\n")); + return (s16_t)ERR_MEM; + } + + /* b) choose the least destructive entry to recycle: + * 1) empty entry + * 2) oldest stable entry + * 3) oldest pending entry without queued packets + * 4) oldest pending entry with queued packets + * + * { ETHARP_FLAG_TRY_HARD is set at this point } + */ + + /* 1) empty entry available? */ + if (empty < ARP_TABLE_SIZE) { + i = empty; + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_find_entry: selecting empty entry %d\n", (int)i)); + } else { + /* 2) found recyclable stable entry? */ + if (old_stable < ARP_TABLE_SIZE) { + /* recycle oldest stable*/ + i = old_stable; + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_find_entry: selecting oldest stable entry %d\n", (int)i)); + /* no queued packets should exist on stable entries */ + LWIP_ASSERT("arp_table[i].q == NULL", arp_table[i].q == NULL); + /* 3) found recyclable pending entry without queued packets? */ + } else if (old_pending < ARP_TABLE_SIZE) { + /* recycle oldest pending */ + i = old_pending; + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_find_entry: selecting oldest pending entry %d (without queue)\n", (int)i)); + /* 4) found recyclable pending entry with queued packets? */ + } else if (old_queue < ARP_TABLE_SIZE) { + /* recycle oldest pending (queued packets are free in etharp_free_entry) */ + i = old_queue; + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_find_entry: selecting oldest pending entry %d, freeing packet queue %p\n", (int)i, (void *)(arp_table[i].q))); + /* no empty or recyclable entries found */ + } else { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_find_entry: no empty or recyclable entries found\n")); + return (s16_t)ERR_MEM; + } + + /* { empty or recyclable entry found } */ + LWIP_ASSERT("i < ARP_TABLE_SIZE", i < ARP_TABLE_SIZE); + etharp_free_entry(i); + } + + LWIP_ASSERT("i < ARP_TABLE_SIZE", i < ARP_TABLE_SIZE); + LWIP_ASSERT("arp_table[i].state == ETHARP_STATE_EMPTY", + arp_table[i].state == ETHARP_STATE_EMPTY); + + /* IP address given? */ + if (ipaddr != NULL) { + /* set IP address */ + ip4_addr_copy(arp_table[i].ipaddr, *ipaddr); + } + arp_table[i].ctime = 0; +#if ETHARP_TABLE_MATCH_NETIF + arp_table[i].netif = netif; +#endif /* ETHARP_TABLE_MATCH_NETIF */ + return (s16_t)i; +} + +/** + * Update (or insert) a IP/MAC address pair in the ARP cache. + * + * If a pending entry is resolved, any queued packets will be sent + * at this point. + * + * @param netif netif related to this entry (used for NETIF_ADDRHINT) + * @param ipaddr IP address of the inserted ARP entry. + * @param ethaddr Ethernet address of the inserted ARP entry. + * @param flags See @ref etharp_state + * + * @return + * - ERR_OK Successfully updated ARP cache. + * - ERR_MEM If we could not add a new ARP entry when ETHARP_FLAG_TRY_HARD was set. + * - ERR_ARG Non-unicast address given, those will not appear in ARP cache. + * + * @see pbuf_free() + */ +static err_t +etharp_update_arp_entry(struct netif *netif, const ip4_addr_t *ipaddr, struct eth_addr *ethaddr, u8_t flags) +{ + s16_t i; + LWIP_ASSERT("netif->hwaddr_len == ETH_HWADDR_LEN", netif->hwaddr_len == ETH_HWADDR_LEN); + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_update_arp_entry: %"U16_F".%"U16_F".%"U16_F".%"U16_F" - %02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F"\n", + ip4_addr1_16(ipaddr), ip4_addr2_16(ipaddr), ip4_addr3_16(ipaddr), ip4_addr4_16(ipaddr), + (u16_t)ethaddr->addr[0], (u16_t)ethaddr->addr[1], (u16_t)ethaddr->addr[2], + (u16_t)ethaddr->addr[3], (u16_t)ethaddr->addr[4], (u16_t)ethaddr->addr[5])); + /* non-unicast address? */ + if (ip4_addr_isany(ipaddr) || + ip4_addr_isbroadcast(ipaddr, netif) || + ip4_addr_ismulticast(ipaddr)) { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_update_arp_entry: will not add non-unicast IP address to ARP cache\n")); + return ERR_ARG; + } + /* find or create ARP entry */ + i = etharp_find_entry(ipaddr, flags, netif); + /* bail out if no entry could be found */ + if (i < 0) { + return (err_t)i; + } + +#if ETHARP_SUPPORT_STATIC_ENTRIES + if (flags & ETHARP_FLAG_STATIC_ENTRY) { + /* record static type */ + arp_table[i].state = ETHARP_STATE_STATIC; + } else if (arp_table[i].state == ETHARP_STATE_STATIC) { + /* found entry is a static type, don't overwrite it */ + return ERR_VAL; + } else +#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */ + { + /* mark it stable */ + arp_table[i].state = ETHARP_STATE_STABLE; + } + + /* record network interface */ + arp_table[i].netif = netif; + /* insert in SNMP ARP index tree */ + mib2_add_arp_entry(netif, &arp_table[i].ipaddr); + + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_update_arp_entry: updating stable entry %"S16_F"\n", i)); + /* update address */ + SMEMCPY(&arp_table[i].ethaddr, ethaddr, ETH_HWADDR_LEN); + /* reset time stamp */ + arp_table[i].ctime = 0; + /* this is where we will send out queued packets! */ +#if ARP_QUEUEING + while (arp_table[i].q != NULL) { + struct pbuf *p; + /* remember remainder of queue */ + struct etharp_q_entry *q = arp_table[i].q; + /* pop first item off the queue */ + arp_table[i].q = q->next; + /* get the packet pointer */ + p = q->p; + /* now queue entry can be freed */ + memp_free(MEMP_ARP_QUEUE, q); +#else /* ARP_QUEUEING */ + if (arp_table[i].q != NULL) { + struct pbuf *p = arp_table[i].q; + arp_table[i].q = NULL; +#endif /* ARP_QUEUEING */ + /* send the queued IP packet */ + ethernet_output(netif, p, (struct eth_addr *)(netif->hwaddr), ethaddr, ETHTYPE_IP); + /* free the queued IP packet */ + pbuf_free(p); + } + return ERR_OK; +} + +#if ETHARP_SUPPORT_STATIC_ENTRIES +/** Add a new static entry to the ARP table. If an entry exists for the + * specified IP address, this entry is overwritten. + * If packets are queued for the specified IP address, they are sent out. + * + * @param ipaddr IP address for the new static entry + * @param ethaddr ethernet address for the new static entry + * @return See return values of etharp_add_static_entry + */ +err_t +etharp_add_static_entry(const ip4_addr_t *ipaddr, struct eth_addr *ethaddr) +{ + struct netif *netif; + LWIP_ASSERT_CORE_LOCKED(); + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_add_static_entry: %"U16_F".%"U16_F".%"U16_F".%"U16_F" - %02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F"\n", + ip4_addr1_16(ipaddr), ip4_addr2_16(ipaddr), ip4_addr3_16(ipaddr), ip4_addr4_16(ipaddr), + (u16_t)ethaddr->addr[0], (u16_t)ethaddr->addr[1], (u16_t)ethaddr->addr[2], + (u16_t)ethaddr->addr[3], (u16_t)ethaddr->addr[4], (u16_t)ethaddr->addr[5])); + + netif = ip4_route(ipaddr); + if (netif == NULL) { + return ERR_RTE; + } + + return etharp_update_arp_entry(netif, ipaddr, ethaddr, ETHARP_FLAG_TRY_HARD | ETHARP_FLAG_STATIC_ENTRY); +} + +/** Remove a static entry from the ARP table previously added with a call to + * etharp_add_static_entry. + * + * @param ipaddr IP address of the static entry to remove + * @return ERR_OK: entry removed + * ERR_MEM: entry wasn't found + * ERR_ARG: entry wasn't a static entry but a dynamic one + */ +err_t +etharp_remove_static_entry(const ip4_addr_t *ipaddr) +{ + s16_t i; + LWIP_ASSERT_CORE_LOCKED(); + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_remove_static_entry: %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + ip4_addr1_16(ipaddr), ip4_addr2_16(ipaddr), ip4_addr3_16(ipaddr), ip4_addr4_16(ipaddr))); + + /* find or create ARP entry */ + i = etharp_find_entry(ipaddr, ETHARP_FLAG_FIND_ONLY, NULL); + /* bail out if no entry could be found */ + if (i < 0) { + return (err_t)i; + } + + if (arp_table[i].state != ETHARP_STATE_STATIC) { + /* entry wasn't a static entry, cannot remove it */ + return ERR_ARG; + } + /* entry found, free it */ + etharp_free_entry(i); + return ERR_OK; +} +#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */ + +/** + * Remove all ARP table entries of the specified netif. + * + * @param netif points to a network interface + */ +void +etharp_cleanup_netif(struct netif *netif) +{ + int i; + + for (i = 0; i < ARP_TABLE_SIZE; ++i) { + u8_t state = arp_table[i].state; + if ((state != ETHARP_STATE_EMPTY) && (arp_table[i].netif == netif)) { + etharp_free_entry(i); + } + } +} + +/** + * Finds (stable) ethernet/IP address pair from ARP table + * using interface and IP address index. + * @note the addresses in the ARP table are in network order! + * + * @param netif points to interface index + * @param ipaddr points to the (network order) IP address index + * @param eth_ret points to return pointer + * @param ip_ret points to return pointer + * @return table index if found, -1 otherwise + */ +ssize_t +etharp_find_addr(struct netif *netif, const ip4_addr_t *ipaddr, + struct eth_addr **eth_ret, const ip4_addr_t **ip_ret) +{ + s16_t i; + + LWIP_ASSERT("eth_ret != NULL && ip_ret != NULL", + eth_ret != NULL && ip_ret != NULL); + + LWIP_UNUSED_ARG(netif); + + i = etharp_find_entry(ipaddr, ETHARP_FLAG_FIND_ONLY, netif); + if ((i >= 0) && (arp_table[i].state >= ETHARP_STATE_STABLE)) { + *eth_ret = &arp_table[i].ethaddr; + *ip_ret = &arp_table[i].ipaddr; + return i; + } + return -1; +} + +/** + * Possibility to iterate over stable ARP table entries + * + * @param i entry number, 0 to ARP_TABLE_SIZE + * @param ipaddr return value: IP address + * @param netif return value: points to interface + * @param eth_ret return value: ETH address + * @return 1 on valid index, 0 otherwise + */ +int +etharp_get_entry(size_t i, ip4_addr_t **ipaddr, struct netif **netif, struct eth_addr **eth_ret) +{ + LWIP_ASSERT("ipaddr != NULL", ipaddr != NULL); + LWIP_ASSERT("netif != NULL", netif != NULL); + LWIP_ASSERT("eth_ret != NULL", eth_ret != NULL); + + if ((i < ARP_TABLE_SIZE) && (arp_table[i].state >= ETHARP_STATE_STABLE)) { + *ipaddr = &arp_table[i].ipaddr; + *netif = arp_table[i].netif; + *eth_ret = &arp_table[i].ethaddr; + return 1; + } else { + return 0; + } +} + +/** + * Responds to ARP requests to us. Upon ARP replies to us, add entry to cache + * send out queued IP packets. Updates cache with snooped address pairs. + * + * Should be called for incoming ARP packets. The pbuf in the argument + * is freed by this function. + * + * @param p The ARP packet that arrived on netif. Is freed by this function. + * @param netif The lwIP network interface on which the ARP packet pbuf arrived. + * + * @see pbuf_free() + */ +void +etharp_input(struct pbuf *p, struct netif *netif) +{ + struct etharp_hdr *hdr; + /* these are aligned properly, whereas the ARP header fields might not be */ + ip4_addr_t sipaddr, dipaddr; + u8_t for_us; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("netif != NULL", (netif != NULL), return;); + + hdr = (struct etharp_hdr *)p->payload; + + /* RFC 826 "Packet Reception": */ + if ((hdr->hwtype != PP_HTONS(LWIP_IANA_HWTYPE_ETHERNET)) || + (hdr->hwlen != ETH_HWADDR_LEN) || + (hdr->protolen != sizeof(ip4_addr_t)) || + (hdr->proto != PP_HTONS(ETHTYPE_IP))) { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, + ("etharp_input: packet dropped, wrong hw type, hwlen, proto, protolen or ethernet type (%"U16_F"/%"U16_F"/%"U16_F"/%"U16_F")\n", + hdr->hwtype, (u16_t)hdr->hwlen, hdr->proto, (u16_t)hdr->protolen)); + ETHARP_STATS_INC(etharp.proterr); + ETHARP_STATS_INC(etharp.drop); + pbuf_free(p); + return; + } + ETHARP_STATS_INC(etharp.recv); + +#if LWIP_AUTOIP + /* We have to check if a host already has configured our random + * created link local address and continuously check if there is + * a host with this IP-address so we can detect collisions */ + autoip_arp_reply(netif, hdr); +#endif /* LWIP_AUTOIP */ + + /* Copy struct ip4_addr_wordaligned to aligned ip4_addr, to support compilers without + * structure packing (not using structure copy which breaks strict-aliasing rules). */ + IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T(&sipaddr, &hdr->sipaddr); + IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T(&dipaddr, &hdr->dipaddr); + + /* this interface is not configured? */ + if (ip4_addr_isany_val(*netif_ip4_addr(netif))) { + for_us = 0; + } else { + /* ARP packet directed to us? */ + for_us = (u8_t)ip4_addr_cmp(&dipaddr, netif_ip4_addr(netif)); + } + + /* ARP message directed to us? + -> add IP address in ARP cache; assume requester wants to talk to us, + can result in directly sending the queued packets for this host. + ARP message not directed to us? + -> update the source IP address in the cache, if present */ + etharp_update_arp_entry(netif, &sipaddr, &(hdr->shwaddr), + for_us ? ETHARP_FLAG_TRY_HARD : ETHARP_FLAG_FIND_ONLY); + + /* now act on the message itself */ + switch (hdr->opcode) { + /* ARP request? */ + case PP_HTONS(ARP_REQUEST): + /* ARP request. If it asked for our address, we send out a + * reply. In any case, we time-stamp any existing ARP entry, + * and possibly send out an IP packet that was queued on it. */ + + LWIP_DEBUGF (ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_input: incoming ARP request\n")); + /* ARP request for our address? */ + if (for_us) { + /* send ARP response */ + etharp_raw(netif, + (struct eth_addr *)netif->hwaddr, &hdr->shwaddr, + (struct eth_addr *)netif->hwaddr, netif_ip4_addr(netif), + &hdr->shwaddr, &sipaddr, + ARP_REPLY); + /* we are not configured? */ + } else if (ip4_addr_isany_val(*netif_ip4_addr(netif))) { + /* { for_us == 0 and netif->ip_addr.addr == 0 } */ + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_input: we are unconfigured, ARP request ignored.\n")); + /* request was not directed to us */ + } else { + /* { for_us == 0 and netif->ip_addr.addr != 0 } */ + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_input: ARP request was not for us.\n")); + } + break; + case PP_HTONS(ARP_REPLY): + /* ARP reply. We already updated the ARP cache earlier. */ + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_input: incoming ARP reply\n")); +#if (LWIP_DHCP && DHCP_DOES_ARP_CHECK) + /* DHCP wants to know about ARP replies from any host with an + * IP address also offered to us by the DHCP server. We do not + * want to take a duplicate IP address on a single network. + * @todo How should we handle redundant (fail-over) interfaces? */ + dhcp_arp_reply(netif, &sipaddr); +#endif /* (LWIP_DHCP && DHCP_DOES_ARP_CHECK) */ + break; + default: + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_input: ARP unknown opcode type %"S16_F"\n", lwip_htons(hdr->opcode))); + ETHARP_STATS_INC(etharp.err); + break; + } + /* free ARP packet */ + pbuf_free(p); +} + +/** Just a small helper function that sends a pbuf to an ethernet address + * in the arp_table specified by the index 'arp_idx'. + */ +static err_t +etharp_output_to_arp_index(struct netif *netif, struct pbuf *q, netif_addr_idx_t arp_idx) +{ + LWIP_ASSERT("arp_table[arp_idx].state >= ETHARP_STATE_STABLE", + arp_table[arp_idx].state >= ETHARP_STATE_STABLE); + /* if arp table entry is about to expire: re-request it, + but only if its state is ETHARP_STATE_STABLE to prevent flooding the + network with ARP requests if this address is used frequently. */ + if (arp_table[arp_idx].state == ETHARP_STATE_STABLE) { + if (arp_table[arp_idx].ctime >= ARP_AGE_REREQUEST_USED_BROADCAST) { + /* issue a standard request using broadcast */ + if (etharp_request(netif, &arp_table[arp_idx].ipaddr) == ERR_OK) { + arp_table[arp_idx].state = ETHARP_STATE_STABLE_REREQUESTING_1; + } + } else if (arp_table[arp_idx].ctime >= ARP_AGE_REREQUEST_USED_UNICAST) { + /* issue a unicast request (for 15 seconds) to prevent unnecessary broadcast */ + if (etharp_request_dst(netif, &arp_table[arp_idx].ipaddr, &arp_table[arp_idx].ethaddr) == ERR_OK) { + arp_table[arp_idx].state = ETHARP_STATE_STABLE_REREQUESTING_1; + } + } + } + + return ethernet_output(netif, q, (struct eth_addr *)(netif->hwaddr), &arp_table[arp_idx].ethaddr, ETHTYPE_IP); +} + +/** + * Resolve and fill-in Ethernet address header for outgoing IP packet. + * + * For IP multicast and broadcast, corresponding Ethernet addresses + * are selected and the packet is transmitted on the link. + * + * For unicast addresses, the packet is submitted to etharp_query(). In + * case the IP address is outside the local network, the IP address of + * the gateway is used. + * + * @param netif The lwIP network interface which the IP packet will be sent on. + * @param q The pbuf(s) containing the IP packet to be sent. + * @param ipaddr The IP address of the packet destination. + * + * @return + * - ERR_RTE No route to destination (no gateway to external networks), + * or the return type of either etharp_query() or ethernet_output(). + */ +err_t +etharp_output(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr) +{ + const struct eth_addr *dest; + struct eth_addr mcastaddr; + const ip4_addr_t *dst_addr = ipaddr; + + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ASSERT("netif != NULL", netif != NULL); + LWIP_ASSERT("q != NULL", q != NULL); + LWIP_ASSERT("ipaddr != NULL", ipaddr != NULL); + + /* Determine on destination hardware address. Broadcasts and multicasts + * are special, other IP addresses are looked up in the ARP table. */ + + /* broadcast destination IP address? */ + if (ip4_addr_isbroadcast(ipaddr, netif)) { + /* broadcast on Ethernet also */ + dest = (const struct eth_addr *)ðbroadcast; + /* multicast destination IP address? */ + } else if (ip4_addr_ismulticast(ipaddr)) { + /* Hash IP multicast address to MAC address.*/ + mcastaddr.addr[0] = LL_IP4_MULTICAST_ADDR_0; + mcastaddr.addr[1] = LL_IP4_MULTICAST_ADDR_1; + mcastaddr.addr[2] = LL_IP4_MULTICAST_ADDR_2; + mcastaddr.addr[3] = ip4_addr2(ipaddr) & 0x7f; + mcastaddr.addr[4] = ip4_addr3(ipaddr); + mcastaddr.addr[5] = ip4_addr4(ipaddr); + /* destination Ethernet address is multicast */ + dest = &mcastaddr; + /* unicast destination IP address? */ + } else { + netif_addr_idx_t i; + /* outside local network? if so, this can neither be a global broadcast nor + a subnet broadcast. */ + if (!ip4_addr_netcmp(ipaddr, netif_ip4_addr(netif), netif_ip4_netmask(netif)) && + !ip4_addr_islinklocal(ipaddr)) { +#if LWIP_AUTOIP + struct ip_hdr *iphdr = LWIP_ALIGNMENT_CAST(struct ip_hdr *, q->payload); + /* According to RFC 3297, chapter 2.6.2 (Forwarding Rules), a packet with + a link-local source address must always be "directly to its destination + on the same physical link. The host MUST NOT send the packet to any + router for forwarding". */ + if (!ip4_addr_islinklocal(&iphdr->src)) +#endif /* LWIP_AUTOIP */ + { +#ifdef LWIP_HOOK_ETHARP_GET_GW + /* For advanced routing, a single default gateway might not be enough, so get + the IP address of the gateway to handle the current destination address. */ + dst_addr = LWIP_HOOK_ETHARP_GET_GW(netif, ipaddr); + if (dst_addr == NULL) +#endif /* LWIP_HOOK_ETHARP_GET_GW */ + { + /* interface has default gateway? */ + if (!ip4_addr_isany_val(*netif_ip4_gw(netif))) { + /* send to hardware address of default gateway IP address */ + dst_addr = netif_ip4_gw(netif); + /* no default gateway available */ + } else { + /* no route to destination error (default gateway missing) */ + return ERR_RTE; + } + } + } + } +#if LWIP_NETIF_HWADDRHINT + if (netif->hints != NULL) { + /* per-pcb cached entry was given */ + netif_addr_idx_t etharp_cached_entry = netif->hints->addr_hint; + if (etharp_cached_entry < ARP_TABLE_SIZE) { +#endif /* LWIP_NETIF_HWADDRHINT */ + if ((arp_table[etharp_cached_entry].state >= ETHARP_STATE_STABLE) && +#if ETHARP_TABLE_MATCH_NETIF + (arp_table[etharp_cached_entry].netif == netif) && +#endif + (ip4_addr_cmp(dst_addr, &arp_table[etharp_cached_entry].ipaddr))) { + /* the per-pcb-cached entry is stable and the right one! */ + ETHARP_STATS_INC(etharp.cachehit); + return etharp_output_to_arp_index(netif, q, etharp_cached_entry); + } +#if LWIP_NETIF_HWADDRHINT + } + } +#endif /* LWIP_NETIF_HWADDRHINT */ + + /* find stable entry: do this here since this is a critical path for + throughput and etharp_find_entry() is kind of slow */ + for (i = 0; i < ARP_TABLE_SIZE; i++) { + if ((arp_table[i].state >= ETHARP_STATE_STABLE) && +#if ETHARP_TABLE_MATCH_NETIF + (arp_table[i].netif == netif) && +#endif + (ip4_addr_cmp(dst_addr, &arp_table[i].ipaddr))) { + /* found an existing, stable entry */ + ETHARP_SET_ADDRHINT(netif, i); + return etharp_output_to_arp_index(netif, q, i); + } + } + /* no stable entry found, use the (slower) query function: + queue on destination Ethernet address belonging to ipaddr */ + return etharp_query(netif, dst_addr, q); + } + + /* continuation for multicast/broadcast destinations */ + /* obtain source Ethernet address of the given interface */ + /* send packet directly on the link */ + return ethernet_output(netif, q, (struct eth_addr *)(netif->hwaddr), dest, ETHTYPE_IP); +} + +/** + * Send an ARP request for the given IP address and/or queue a packet. + * + * If the IP address was not yet in the cache, a pending ARP cache entry + * is added and an ARP request is sent for the given address. The packet + * is queued on this entry. + * + * If the IP address was already pending in the cache, a new ARP request + * is sent for the given address. The packet is queued on this entry. + * + * If the IP address was already stable in the cache, and a packet is + * given, it is directly sent and no ARP request is sent out. + * + * If the IP address was already stable in the cache, and no packet is + * given, an ARP request is sent out. + * + * @param netif The lwIP network interface on which ipaddr + * must be queried for. + * @param ipaddr The IP address to be resolved. + * @param q If non-NULL, a pbuf that must be delivered to the IP address. + * q is not freed by this function. + * + * @note q must only be ONE packet, not a packet queue! + * + * @return + * - ERR_BUF Could not make room for Ethernet header. + * - ERR_MEM Hardware address unknown, and no more ARP entries available + * to query for address or queue the packet. + * - ERR_MEM Could not queue packet due to memory shortage. + * - ERR_RTE No route to destination (no gateway to external networks). + * - ERR_ARG Non-unicast address given, those will not appear in ARP cache. + * + */ +err_t +etharp_query(struct netif *netif, const ip4_addr_t *ipaddr, struct pbuf *q) +{ + struct eth_addr *srcaddr = (struct eth_addr *)netif->hwaddr; + err_t result = ERR_MEM; + int is_new_entry = 0; + s16_t i_err; + netif_addr_idx_t i; + + /* non-unicast address? */ + if (ip4_addr_isbroadcast(ipaddr, netif) || + ip4_addr_ismulticast(ipaddr) || + ip4_addr_isany(ipaddr)) { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: will not add non-unicast IP address to ARP cache\n")); + return ERR_ARG; + } + + /* find entry in ARP cache, ask to create entry if queueing packet */ + i_err = etharp_find_entry(ipaddr, ETHARP_FLAG_TRY_HARD, netif); + + /* could not find or create entry? */ + if (i_err < 0) { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: could not create ARP entry\n")); + if (q) { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: packet dropped\n")); + ETHARP_STATS_INC(etharp.memerr); + } + return (err_t)i_err; + } + LWIP_ASSERT("type overflow", (size_t)i_err < NETIF_ADDR_IDX_MAX); + i = (netif_addr_idx_t)i_err; + + /* mark a fresh entry as pending (we just sent a request) */ + if (arp_table[i].state == ETHARP_STATE_EMPTY) { + is_new_entry = 1; + arp_table[i].state = ETHARP_STATE_PENDING; + /* record network interface for re-sending arp request in etharp_tmr */ + arp_table[i].netif = netif; + } + + /* { i is either a STABLE or (new or existing) PENDING entry } */ + LWIP_ASSERT("arp_table[i].state == PENDING or STABLE", + ((arp_table[i].state == ETHARP_STATE_PENDING) || + (arp_table[i].state >= ETHARP_STATE_STABLE))); + + /* do we have a new entry? or an implicit query request? */ + if (is_new_entry || (q == NULL)) { + /* try to resolve it; send out ARP request */ + result = etharp_request(netif, ipaddr); + if (result != ERR_OK) { + /* ARP request couldn't be sent */ + /* We don't re-send arp request in etharp_tmr, but we still queue packets, + since this failure could be temporary, and the next packet calling + etharp_query again could lead to sending the queued packets. */ + } + if (q == NULL) { + return result; + } + } + + /* packet given? */ + LWIP_ASSERT("q != NULL", q != NULL); + /* stable entry? */ + if (arp_table[i].state >= ETHARP_STATE_STABLE) { + /* we have a valid IP->Ethernet address mapping */ + ETHARP_SET_ADDRHINT(netif, i); + /* send the packet */ + result = ethernet_output(netif, q, srcaddr, &(arp_table[i].ethaddr), ETHTYPE_IP); + /* pending entry? (either just created or already pending */ + } else if (arp_table[i].state == ETHARP_STATE_PENDING) { + /* entry is still pending, queue the given packet 'q' */ + struct pbuf *p; + int copy_needed = 0; + /* IF q includes a pbuf that must be copied, copy the whole chain into a + * new PBUF_RAM. See the definition of PBUF_NEEDS_COPY for details. */ + p = q; + while (p) { + LWIP_ASSERT("no packet queues allowed!", (p->len != p->tot_len) || (p->next == 0)); + if (PBUF_NEEDS_COPY(p)) { + copy_needed = 1; + break; + } + p = p->next; + } + if (copy_needed) { + /* copy the whole packet into new pbufs */ + p = pbuf_clone(PBUF_LINK, PBUF_RAM, q); + } else { + /* referencing the old pbuf is enough */ + p = q; + pbuf_ref(p); + } + /* packet could be taken over? */ + if (p != NULL) { + /* queue packet ... */ +#if ARP_QUEUEING + struct etharp_q_entry *new_entry; + /* allocate a new arp queue entry */ + new_entry = (struct etharp_q_entry *)memp_malloc(MEMP_ARP_QUEUE); + if (new_entry != NULL) { + unsigned int qlen = 0; + new_entry->next = 0; + new_entry->p = p; + if (arp_table[i].q != NULL) { + /* queue was already existent, append the new entry to the end */ + struct etharp_q_entry *r; + r = arp_table[i].q; + qlen++; + while (r->next != NULL) { + r = r->next; + qlen++; + } + r->next = new_entry; + } else { + /* queue did not exist, first item in queue */ + arp_table[i].q = new_entry; + } +#if ARP_QUEUE_LEN + if (qlen >= ARP_QUEUE_LEN) { + struct etharp_q_entry *old; + old = arp_table[i].q; + arp_table[i].q = arp_table[i].q->next; + pbuf_free(old->p); + memp_free(MEMP_ARP_QUEUE, old); + } +#endif + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: queued packet %p on ARP entry %"U16_F"\n", (void *)q, i)); + result = ERR_OK; + } else { + /* the pool MEMP_ARP_QUEUE is empty */ + pbuf_free(p); + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: could not queue a copy of PBUF_REF packet %p (out of memory)\n", (void *)q)); + result = ERR_MEM; + } +#else /* ARP_QUEUEING */ + /* always queue one packet per ARP request only, freeing a previously queued packet */ + if (arp_table[i].q != NULL) { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: dropped previously queued packet %p for ARP entry %"U16_F"\n", (void *)q, (u16_t)i)); + pbuf_free(arp_table[i].q); + } + arp_table[i].q = p; + result = ERR_OK; + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: queued packet %p on ARP entry %"U16_F"\n", (void *)q, (u16_t)i)); +#endif /* ARP_QUEUEING */ + } else { + ETHARP_STATS_INC(etharp.memerr); + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: could not queue a copy of PBUF_REF packet %p (out of memory)\n", (void *)q)); + result = ERR_MEM; + } + } + return result; +} + +/** + * Send a raw ARP packet (opcode and all addresses can be modified) + * + * @param netif the lwip network interface on which to send the ARP packet + * @param ethsrc_addr the source MAC address for the ethernet header + * @param ethdst_addr the destination MAC address for the ethernet header + * @param hwsrc_addr the source MAC address for the ARP protocol header + * @param ipsrc_addr the source IP address for the ARP protocol header + * @param hwdst_addr the destination MAC address for the ARP protocol header + * @param ipdst_addr the destination IP address for the ARP protocol header + * @param opcode the type of the ARP packet + * @return ERR_OK if the ARP packet has been sent + * ERR_MEM if the ARP packet couldn't be allocated + * any other err_t on failure + */ +static err_t +etharp_raw(struct netif *netif, const struct eth_addr *ethsrc_addr, + const struct eth_addr *ethdst_addr, + const struct eth_addr *hwsrc_addr, const ip4_addr_t *ipsrc_addr, + const struct eth_addr *hwdst_addr, const ip4_addr_t *ipdst_addr, + const u16_t opcode) +{ + struct pbuf *p; + err_t result = ERR_OK; + struct etharp_hdr *hdr; + + LWIP_ASSERT("netif != NULL", netif != NULL); + + /* allocate a pbuf for the outgoing ARP request packet */ + p = pbuf_alloc(PBUF_LINK, SIZEOF_ETHARP_HDR, PBUF_RAM); + /* could allocate a pbuf for an ARP request? */ + if (p == NULL) { + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, + ("etharp_raw: could not allocate pbuf for ARP request.\n")); + ETHARP_STATS_INC(etharp.memerr); + return ERR_MEM; + } + LWIP_ASSERT("check that first pbuf can hold struct etharp_hdr", + (p->len >= SIZEOF_ETHARP_HDR)); + + hdr = (struct etharp_hdr *)p->payload; + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_raw: sending raw ARP packet.\n")); + hdr->opcode = lwip_htons(opcode); + + LWIP_ASSERT("netif->hwaddr_len must be the same as ETH_HWADDR_LEN for etharp!", + (netif->hwaddr_len == ETH_HWADDR_LEN)); + + /* Write the ARP MAC-Addresses */ + SMEMCPY(&hdr->shwaddr, hwsrc_addr, ETH_HWADDR_LEN); + SMEMCPY(&hdr->dhwaddr, hwdst_addr, ETH_HWADDR_LEN); + /* Copy struct ip4_addr_wordaligned to aligned ip4_addr, to support compilers without + * structure packing. */ + IPADDR_WORDALIGNED_COPY_FROM_IP4_ADDR_T(&hdr->sipaddr, ipsrc_addr); + IPADDR_WORDALIGNED_COPY_FROM_IP4_ADDR_T(&hdr->dipaddr, ipdst_addr); + + hdr->hwtype = PP_HTONS(LWIP_IANA_HWTYPE_ETHERNET); + hdr->proto = PP_HTONS(ETHTYPE_IP); + /* set hwlen and protolen */ + hdr->hwlen = ETH_HWADDR_LEN; + hdr->protolen = sizeof(ip4_addr_t); + + /* send ARP query */ +#if LWIP_AUTOIP + /* If we are using Link-Local, all ARP packets that contain a Link-Local + * 'sender IP address' MUST be sent using link-layer broadcast instead of + * link-layer unicast. (See RFC3927 Section 2.5, last paragraph) */ + if (ip4_addr_islinklocal(ipsrc_addr)) { + ethernet_output(netif, p, ethsrc_addr, ðbroadcast, ETHTYPE_ARP); + } else +#endif /* LWIP_AUTOIP */ + { + ethernet_output(netif, p, ethsrc_addr, ethdst_addr, ETHTYPE_ARP); + } + + ETHARP_STATS_INC(etharp.xmit); + /* free ARP query packet */ + pbuf_free(p); + p = NULL; + /* could not allocate pbuf for ARP request */ + + return result; +} + +/** + * Send an ARP request packet asking for ipaddr to a specific eth address. + * Used to send unicast request to refresh the ARP table just before an entry + * times out + * + * @param netif the lwip network interface on which to send the request + * @param ipaddr the IP address for which to ask + * @param hw_dst_addr the ethernet address to send this packet to + * @return ERR_OK if the request has been sent + * ERR_MEM if the ARP packet couldn't be allocated + * any other err_t on failure + */ +static err_t +etharp_request_dst(struct netif *netif, const ip4_addr_t *ipaddr, const struct eth_addr *hw_dst_addr) +{ + return etharp_raw(netif, (struct eth_addr *)netif->hwaddr, hw_dst_addr, + (struct eth_addr *)netif->hwaddr, netif_ip4_addr(netif), ðzero, + ipaddr, ARP_REQUEST); +} + +/** + * Send an ARP request packet asking for ipaddr. + * + * @param netif the lwip network interface on which to send the request + * @param ipaddr the IP address for which to ask + * @return ERR_OK if the request has been sent + * ERR_MEM if the ARP packet couldn't be allocated + * any other err_t on failure + */ +err_t +etharp_request(struct netif *netif, const ip4_addr_t *ipaddr) +{ + LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_request: sending ARP request.\n")); + return etharp_request_dst(netif, ipaddr, ðbroadcast); +} + +#endif /* LWIP_IPV4 && LWIP_ARP */ diff --git a/Other/tun2socks/core/c/core/ipv4/icmp.c b/Other/tun2socks/core/c/core/ipv4/icmp.c new file mode 100644 index 0000000..a462ccd --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv4/icmp.c @@ -0,0 +1,404 @@ +/** + * @file + * ICMP - Internet Control Message Protocol + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +/* Some ICMP messages should be passed to the transport protocols. This + is not implemented. */ + +#include "lwip/opt.h" + +#if LWIP_IPV4 && LWIP_ICMP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/icmp.h" +#include "lwip/inet_chksum.h" +#include "lwip/ip.h" +#include "lwip/def.h" +#include "lwip/stats.h" + +#include + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif + +/** Small optimization: set to 0 if incoming PBUF_POOL pbuf always can be + * used to modify and send a response packet (and to 1 if this is not the case, + * e.g. when link header is stripped off when receiving) */ +#ifndef LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN +#define LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN 1 +#endif /* LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN */ + +/* The amount of data from the original packet to return in a dest-unreachable */ +#define ICMP_DEST_UNREACH_DATASIZE 8 + +static void icmp_send_response(struct pbuf *p, u8_t type, u8_t code); + +/** + * Processes ICMP input packets, called from ip_input(). + * + * Currently only processes icmp echo requests and sends + * out the echo response. + * + * @param p the icmp echo request packet, p->payload pointing to the icmp header + * @param inp the netif on which this packet was received + */ +void +icmp_input(struct pbuf *p, struct netif *inp) +{ + u8_t type; +#ifdef LWIP_DEBUG + u8_t code; +#endif /* LWIP_DEBUG */ + struct icmp_echo_hdr *iecho; + const struct ip_hdr *iphdr_in; + u16_t hlen; + const ip4_addr_t *src; + + ICMP_STATS_INC(icmp.recv); + MIB2_STATS_INC(mib2.icmpinmsgs); + + iphdr_in = ip4_current_header(); + hlen = IPH_HL_BYTES(iphdr_in); + if (hlen < IP_HLEN) { + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: short IP header (%"S16_F" bytes) received\n", hlen)); + goto lenerr; + } + if (p->len < sizeof(u16_t) * 2) { + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: short ICMP (%"U16_F" bytes) received\n", p->tot_len)); + goto lenerr; + } + + type = *((u8_t *)p->payload); +#ifdef LWIP_DEBUG + code = *(((u8_t *)p->payload) + 1); + /* if debug is enabled but debug statement below is somehow disabled: */ + LWIP_UNUSED_ARG(code); +#endif /* LWIP_DEBUG */ + switch (type) { + case ICMP_ER: + /* This is OK, echo reply might have been parsed by a raw PCB + (as obviously, an echo request has been sent, too). */ + MIB2_STATS_INC(mib2.icmpinechoreps); + break; + case ICMP_ECHO: + MIB2_STATS_INC(mib2.icmpinechos); + src = ip4_current_dest_addr(); + /* multicast destination address? */ + if (ip4_addr_ismulticast(ip4_current_dest_addr())) { +#if LWIP_MULTICAST_PING + /* For multicast, use address of receiving interface as source address */ + src = netif_ip4_addr(inp); +#else /* LWIP_MULTICAST_PING */ + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: Not echoing to multicast pings\n")); + goto icmperr; +#endif /* LWIP_MULTICAST_PING */ + } + /* broadcast destination address? */ + if (ip4_addr_isbroadcast(ip4_current_dest_addr(), ip_current_netif())) { +#if LWIP_BROADCAST_PING + /* For broadcast, use address of receiving interface as source address */ + src = netif_ip4_addr(inp); +#else /* LWIP_BROADCAST_PING */ + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: Not echoing to broadcast pings\n")); + goto icmperr; +#endif /* LWIP_BROADCAST_PING */ + } + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ping\n")); + if (p->tot_len < sizeof(struct icmp_echo_hdr)) { + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: bad ICMP echo received\n")); + goto lenerr; + } +#if CHECKSUM_CHECK_ICMP + IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_CHECK_ICMP) { + if (inet_chksum_pbuf(p) != 0) { + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: checksum failed for received ICMP echo\n")); + pbuf_free(p); + ICMP_STATS_INC(icmp.chkerr); + MIB2_STATS_INC(mib2.icmpinerrors); + return; + } + } +#endif +#if LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN + if (pbuf_add_header(p, hlen + PBUF_LINK_HLEN + PBUF_LINK_ENCAPSULATION_HLEN)) { + /* p is not big enough to contain link headers + * allocate a new one and copy p into it + */ + struct pbuf *r; + u16_t alloc_len = (u16_t)(p->tot_len + hlen); + if (alloc_len < p->tot_len) { + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: allocating new pbuf failed (tot_len overflow)\n")); + goto icmperr; + } + /* allocate new packet buffer with space for link headers */ + r = pbuf_alloc(PBUF_LINK, alloc_len, PBUF_RAM); + if (r == NULL) { + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: allocating new pbuf failed\n")); + goto icmperr; + } + if (r->len < hlen + sizeof(struct icmp_echo_hdr)) { + LWIP_DEBUGF(ICMP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("first pbuf cannot hold the ICMP header")); + pbuf_free(r); + goto icmperr; + } + /* copy the ip header */ + MEMCPY(r->payload, iphdr_in, hlen); + /* switch r->payload back to icmp header (cannot fail) */ + if (pbuf_remove_header(r, hlen)) { + LWIP_ASSERT("icmp_input: moving r->payload to icmp header failed\n", 0); + pbuf_free(r); + goto icmperr; + } + /* copy the rest of the packet without ip header */ + if (pbuf_copy(r, p) != ERR_OK) { + LWIP_DEBUGF(ICMP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("icmp_input: copying to new pbuf failed")); + pbuf_free(r); + goto icmperr; + } + /* free the original p */ + pbuf_free(p); + /* we now have an identical copy of p that has room for link headers */ + p = r; + } else { + /* restore p->payload to point to icmp header (cannot fail) */ + if (pbuf_remove_header(p, hlen + PBUF_LINK_HLEN + PBUF_LINK_ENCAPSULATION_HLEN)) { + LWIP_ASSERT("icmp_input: restoring original p->payload failed\n", 0); + goto icmperr; + } + } +#endif /* LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN */ + /* At this point, all checks are OK. */ + /* We generate an answer by switching the dest and src ip addresses, + * setting the icmp type to ECHO_RESPONSE and updating the checksum. */ + iecho = (struct icmp_echo_hdr *)p->payload; + if (pbuf_add_header(p, hlen)) { + LWIP_DEBUGF(ICMP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("Can't move over header in packet")); + } else { + err_t ret; + struct ip_hdr *iphdr = (struct ip_hdr *)p->payload; + ip4_addr_copy(iphdr->src, *src); + ip4_addr_copy(iphdr->dest, *ip4_current_src_addr()); + ICMPH_TYPE_SET(iecho, ICMP_ER); +#if CHECKSUM_GEN_ICMP + IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_GEN_ICMP) { + /* adjust the checksum */ + if (iecho->chksum > PP_HTONS(0xffffU - (ICMP_ECHO << 8))) { + iecho->chksum = (u16_t)(iecho->chksum + PP_HTONS((u16_t)(ICMP_ECHO << 8)) + 1); + } else { + iecho->chksum = (u16_t)(iecho->chksum + PP_HTONS(ICMP_ECHO << 8)); + } + } +#if LWIP_CHECKSUM_CTRL_PER_NETIF + else { + iecho->chksum = 0; + } +#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF */ +#else /* CHECKSUM_GEN_ICMP */ + iecho->chksum = 0; +#endif /* CHECKSUM_GEN_ICMP */ + + /* Set the correct TTL and recalculate the header checksum. */ + IPH_TTL_SET(iphdr, ICMP_TTL); + IPH_CHKSUM_SET(iphdr, 0); +#if CHECKSUM_GEN_IP + IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_GEN_IP) { + IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, hlen)); + } +#endif /* CHECKSUM_GEN_IP */ + + ICMP_STATS_INC(icmp.xmit); + /* increase number of messages attempted to send */ + MIB2_STATS_INC(mib2.icmpoutmsgs); + /* increase number of echo replies attempted to send */ + MIB2_STATS_INC(mib2.icmpoutechoreps); + + /* send an ICMP packet */ + ret = ip4_output_if(p, src, LWIP_IP_HDRINCL, + ICMP_TTL, 0, IP_PROTO_ICMP, inp); + if (ret != ERR_OK) { + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ip_output_if returned an error: %s\n", lwip_strerr(ret))); + } + } + break; + default: + if (type == ICMP_DUR) { + MIB2_STATS_INC(mib2.icmpindestunreachs); + } else if (type == ICMP_TE) { + MIB2_STATS_INC(mib2.icmpintimeexcds); + } else if (type == ICMP_PP) { + MIB2_STATS_INC(mib2.icmpinparmprobs); + } else if (type == ICMP_SQ) { + MIB2_STATS_INC(mib2.icmpinsrcquenchs); + } else if (type == ICMP_RD) { + MIB2_STATS_INC(mib2.icmpinredirects); + } else if (type == ICMP_TS) { + MIB2_STATS_INC(mib2.icmpintimestamps); + } else if (type == ICMP_TSR) { + MIB2_STATS_INC(mib2.icmpintimestampreps); + } else if (type == ICMP_AM) { + MIB2_STATS_INC(mib2.icmpinaddrmasks); + } else if (type == ICMP_AMR) { + MIB2_STATS_INC(mib2.icmpinaddrmaskreps); + } + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_input: ICMP type %"S16_F" code %"S16_F" not supported.\n", + (s16_t)type, (s16_t)code)); + ICMP_STATS_INC(icmp.proterr); + ICMP_STATS_INC(icmp.drop); + } + pbuf_free(p); + return; +lenerr: + pbuf_free(p); + ICMP_STATS_INC(icmp.lenerr); + MIB2_STATS_INC(mib2.icmpinerrors); + return; +#if LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN || !LWIP_MULTICAST_PING || !LWIP_BROADCAST_PING +icmperr: + pbuf_free(p); + ICMP_STATS_INC(icmp.err); + MIB2_STATS_INC(mib2.icmpinerrors); + return; +#endif /* LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN || !LWIP_MULTICAST_PING || !LWIP_BROADCAST_PING */ +} + +/** + * Send an icmp 'destination unreachable' packet, called from ip_input() if + * the transport layer protocol is unknown and from udp_input() if the local + * port is not bound. + * + * @param p the input packet for which the 'unreachable' should be sent, + * p->payload pointing to the IP header + * @param t type of the 'unreachable' packet + */ +void +icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t) +{ + MIB2_STATS_INC(mib2.icmpoutdestunreachs); + icmp_send_response(p, ICMP_DUR, t); +} + +#if IP_FORWARD || IP_REASSEMBLY +/** + * Send a 'time exceeded' packet, called from ip_forward() if TTL is 0. + * + * @param p the input packet for which the 'time exceeded' should be sent, + * p->payload pointing to the IP header + * @param t type of the 'time exceeded' packet + */ +void +icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t) +{ + MIB2_STATS_INC(mib2.icmpouttimeexcds); + icmp_send_response(p, ICMP_TE, t); +} + +#endif /* IP_FORWARD || IP_REASSEMBLY */ + +/** + * Send an icmp packet in response to an incoming packet. + * + * @param p the input packet for which the 'unreachable' should be sent, + * p->payload pointing to the IP header + * @param type Type of the ICMP header + * @param code Code of the ICMP header + */ +static void +icmp_send_response(struct pbuf *p, u8_t type, u8_t code) +{ + struct pbuf *q; + struct ip_hdr *iphdr; + /* we can use the echo header here */ + struct icmp_echo_hdr *icmphdr; + ip4_addr_t iphdr_src; + struct netif *netif; + + /* increase number of messages attempted to send */ + MIB2_STATS_INC(mib2.icmpoutmsgs); + + /* ICMP header + IP header + 8 bytes of data */ + q = pbuf_alloc(PBUF_IP, sizeof(struct icmp_echo_hdr) + IP_HLEN + ICMP_DEST_UNREACH_DATASIZE, + PBUF_RAM); + if (q == NULL) { + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_time_exceeded: failed to allocate pbuf for ICMP packet.\n")); + MIB2_STATS_INC(mib2.icmpouterrors); + return; + } + LWIP_ASSERT("check that first pbuf can hold icmp message", + (q->len >= (sizeof(struct icmp_echo_hdr) + IP_HLEN + ICMP_DEST_UNREACH_DATASIZE))); + + iphdr = (struct ip_hdr *)p->payload; + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_time_exceeded from ")); + ip4_addr_debug_print_val(ICMP_DEBUG, iphdr->src); + LWIP_DEBUGF(ICMP_DEBUG, (" to ")); + ip4_addr_debug_print_val(ICMP_DEBUG, iphdr->dest); + LWIP_DEBUGF(ICMP_DEBUG, ("\n")); + + icmphdr = (struct icmp_echo_hdr *)q->payload; + icmphdr->type = type; + icmphdr->code = code; + icmphdr->id = 0; + icmphdr->seqno = 0; + + /* copy fields from original packet */ + SMEMCPY((u8_t *)q->payload + sizeof(struct icmp_echo_hdr), (u8_t *)p->payload, + IP_HLEN + ICMP_DEST_UNREACH_DATASIZE); + + ip4_addr_copy(iphdr_src, iphdr->src); +#ifdef LWIP_HOOK_IP4_ROUTE_SRC + { + ip4_addr_t iphdr_dst; + ip4_addr_copy(iphdr_dst, iphdr->dest); + netif = ip4_route_src(&iphdr_dst, &iphdr_src); + } +#else + netif = ip4_route(&iphdr_src); +#endif + if (netif != NULL) { + /* calculate checksum */ + icmphdr->chksum = 0; +#if CHECKSUM_GEN_ICMP + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_ICMP) { + icmphdr->chksum = inet_chksum(icmphdr, q->len); + } +#endif + ICMP_STATS_INC(icmp.xmit); + ip4_output_if(q, NULL, &iphdr_src, ICMP_TTL, 0, IP_PROTO_ICMP, netif); + } + pbuf_free(q); +} + +#endif /* LWIP_IPV4 && LWIP_ICMP */ diff --git a/Other/tun2socks/core/c/core/ipv4/igmp.c b/Other/tun2socks/core/c/core/ipv4/igmp.c new file mode 100644 index 0000000..b655aa3 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv4/igmp.c @@ -0,0 +1,801 @@ +/** + * @file + * IGMP - Internet Group Management Protocol + * + * @defgroup igmp IGMP + * @ingroup ip4 + * To be called from TCPIP thread + */ + +/* + * Copyright (c) 2002 CITEL Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of CITEL Technologies Ltd nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY CITEL TECHNOLOGIES AND CONTRIBUTORS ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL CITEL TECHNOLOGIES OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is a contribution to the lwIP TCP/IP stack. + * The Swedish Institute of Computer Science and Adam Dunkels + * are specifically granted permission to redistribute this + * source code. +*/ + +/*------------------------------------------------------------- +Note 1) +Although the rfc requires V1 AND V2 capability +we will only support v2 since now V1 is very old (August 1989) +V1 can be added if required + +a debug print and statistic have been implemented to +show this up. +------------------------------------------------------------- +------------------------------------------------------------- +Note 2) +A query for a specific group address (as opposed to ALLHOSTS) +has now been implemented as I am unsure if it is required + +a debug print and statistic have been implemented to +show this up. +------------------------------------------------------------- +------------------------------------------------------------- +Note 3) +The router alert rfc 2113 is implemented in outgoing packets +but not checked rigorously incoming +------------------------------------------------------------- +Steve Reynolds +------------------------------------------------------------*/ + +/*----------------------------------------------------------------------------- + * RFC 988 - Host extensions for IP multicasting - V0 + * RFC 1054 - Host extensions for IP multicasting - + * RFC 1112 - Host extensions for IP multicasting - V1 + * RFC 2236 - Internet Group Management Protocol, Version 2 - V2 <- this code is based on this RFC (it's the "de facto" standard) + * RFC 3376 - Internet Group Management Protocol, Version 3 - V3 + * RFC 4604 - Using Internet Group Management Protocol Version 3... - V3+ + * RFC 2113 - IP Router Alert Option - + *----------------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------------- + * Includes + *----------------------------------------------------------------------------*/ + +#include "lwip/opt.h" + +#if LWIP_IPV4 && LWIP_IGMP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/igmp.h" +#include "lwip/debug.h" +#include "lwip/def.h" +#include "lwip/mem.h" +#include "lwip/ip.h" +#include "lwip/inet_chksum.h" +#include "lwip/netif.h" +#include "lwip/stats.h" +#include "lwip/prot/igmp.h" + +#include + +static struct igmp_group *igmp_lookup_group(struct netif *ifp, const ip4_addr_t *addr); +static err_t igmp_remove_group(struct netif *netif, struct igmp_group *group); +static void igmp_timeout(struct netif *netif, struct igmp_group *group); +static void igmp_start_timer(struct igmp_group *group, u8_t max_time); +static void igmp_delaying_member(struct igmp_group *group, u8_t maxresp); +static err_t igmp_ip_output_if(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, struct netif *netif); +static void igmp_send(struct netif *netif, struct igmp_group *group, u8_t type); + +static ip4_addr_t allsystems; +static ip4_addr_t allrouters; + +/** + * Initialize the IGMP module + */ +void +igmp_init(void) +{ + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_init: initializing\n")); + + IP4_ADDR(&allsystems, 224, 0, 0, 1); + IP4_ADDR(&allrouters, 224, 0, 0, 2); +} + +/** + * Start IGMP processing on interface + * + * @param netif network interface on which start IGMP processing + */ +err_t +igmp_start(struct netif *netif) +{ + struct igmp_group *group; + + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_start: starting IGMP processing on if %p\n", (void *)netif)); + + group = igmp_lookup_group(netif, &allsystems); + + if (group != NULL) { + group->group_state = IGMP_GROUP_IDLE_MEMBER; + group->use++; + + /* Allow the igmp messages at the MAC level */ + if (netif->igmp_mac_filter != NULL) { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_start: igmp_mac_filter(ADD ")); + ip4_addr_debug_print_val(IGMP_DEBUG, allsystems); + LWIP_DEBUGF(IGMP_DEBUG, (") on if %p\n", (void *)netif)); + netif->igmp_mac_filter(netif, &allsystems, NETIF_ADD_MAC_FILTER); + } + + return ERR_OK; + } + + return ERR_MEM; +} + +/** + * Stop IGMP processing on interface + * + * @param netif network interface on which stop IGMP processing + */ +err_t +igmp_stop(struct netif *netif) +{ + struct igmp_group *group = netif_igmp_data(netif); + + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_IGMP, NULL); + + while (group != NULL) { + struct igmp_group *next = group->next; /* avoid use-after-free below */ + + /* disable the group at the MAC level */ + if (netif->igmp_mac_filter != NULL) { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_stop: igmp_mac_filter(DEL ")); + ip4_addr_debug_print_val(IGMP_DEBUG, group->group_address); + LWIP_DEBUGF(IGMP_DEBUG, (") on if %p\n", (void *)netif)); + netif->igmp_mac_filter(netif, &(group->group_address), NETIF_DEL_MAC_FILTER); + } + + /* free group */ + memp_free(MEMP_IGMP_GROUP, group); + + /* move to "next" */ + group = next; + } + return ERR_OK; +} + +/** + * Report IGMP memberships for this interface + * + * @param netif network interface on which report IGMP memberships + */ +void +igmp_report_groups(struct netif *netif) +{ + struct igmp_group *group = netif_igmp_data(netif); + + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_report_groups: sending IGMP reports on if %p\n", (void *)netif)); + + /* Skip the first group in the list, it is always the allsystems group added in igmp_start() */ + if (group != NULL) { + group = group->next; + } + + while (group != NULL) { + igmp_delaying_member(group, IGMP_JOIN_DELAYING_MEMBER_TMR); + group = group->next; + } +} + +/** + * Search for a group in the netif's igmp group list + * + * @param ifp the network interface for which to look + * @param addr the group ip address to search for + * @return a struct igmp_group* if the group has been found, + * NULL if the group wasn't found. + */ +struct igmp_group * +igmp_lookfor_group(struct netif *ifp, const ip4_addr_t *addr) +{ + struct igmp_group *group = netif_igmp_data(ifp); + + while (group != NULL) { + if (ip4_addr_cmp(&(group->group_address), addr)) { + return group; + } + group = group->next; + } + + /* to be clearer, we return NULL here instead of + * 'group' (which is also NULL at this point). + */ + return NULL; +} + +/** + * Search for a specific igmp group and create a new one if not found- + * + * @param ifp the network interface for which to look + * @param addr the group ip address to search + * @return a struct igmp_group*, + * NULL on memory error. + */ +static struct igmp_group * +igmp_lookup_group(struct netif *ifp, const ip4_addr_t *addr) +{ + struct igmp_group *group; + struct igmp_group *list_head = netif_igmp_data(ifp); + + /* Search if the group already exists */ + group = igmp_lookfor_group(ifp, addr); + if (group != NULL) { + /* Group already exists. */ + return group; + } + + /* Group doesn't exist yet, create a new one */ + group = (struct igmp_group *)memp_malloc(MEMP_IGMP_GROUP); + if (group != NULL) { + ip4_addr_set(&(group->group_address), addr); + group->timer = 0; /* Not running */ + group->group_state = IGMP_GROUP_NON_MEMBER; + group->last_reporter_flag = 0; + group->use = 0; + + /* Ensure allsystems group is always first in list */ + if (list_head == NULL) { + /* this is the first entry in linked list */ + LWIP_ASSERT("igmp_lookup_group: first group must be allsystems", + (ip4_addr_cmp(addr, &allsystems) != 0)); + group->next = NULL; + netif_set_client_data(ifp, LWIP_NETIF_CLIENT_DATA_INDEX_IGMP, group); + } else { + /* append _after_ first entry */ + LWIP_ASSERT("igmp_lookup_group: all except first group must not be allsystems", + (ip4_addr_cmp(addr, &allsystems) == 0)); + group->next = list_head->next; + list_head->next = group; + } + } + + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_lookup_group: %sallocated a new group with address ", (group ? "" : "impossible to "))); + ip4_addr_debug_print(IGMP_DEBUG, addr); + LWIP_DEBUGF(IGMP_DEBUG, (" on if %p\n", (void *)ifp)); + + return group; +} + +/** + * Remove a group from netif's igmp group list, but don't free it yet + * + * @param group the group to remove from the netif's igmp group list + * @return ERR_OK if group was removed from the list, an err_t otherwise + */ +static err_t +igmp_remove_group(struct netif *netif, struct igmp_group *group) +{ + err_t err = ERR_OK; + struct igmp_group *tmp_group; + + /* Skip the first group in the list, it is always the allsystems group added in igmp_start() */ + for (tmp_group = netif_igmp_data(netif); tmp_group != NULL; tmp_group = tmp_group->next) { + if (tmp_group->next == group) { + tmp_group->next = group->next; + break; + } + } + /* Group not found in netif's igmp group list */ + if (tmp_group == NULL) { + err = ERR_ARG; + } + + return err; +} + +/** + * Called from ip_input() if a new IGMP packet is received. + * + * @param p received igmp packet, p->payload pointing to the igmp header + * @param inp network interface on which the packet was received + * @param dest destination ip address of the igmp packet + */ +void +igmp_input(struct pbuf *p, struct netif *inp, const ip4_addr_t *dest) +{ + struct igmp_msg *igmp; + struct igmp_group *group; + struct igmp_group *groupref; + + IGMP_STATS_INC(igmp.recv); + + /* Note that the length CAN be greater than 8 but only 8 are used - All are included in the checksum */ + if (p->len < IGMP_MINLEN) { + pbuf_free(p); + IGMP_STATS_INC(igmp.lenerr); + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_input: length error\n")); + return; + } + + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_input: message from ")); + ip4_addr_debug_print_val(IGMP_DEBUG, ip4_current_header()->src); + LWIP_DEBUGF(IGMP_DEBUG, (" to address ")); + ip4_addr_debug_print_val(IGMP_DEBUG, ip4_current_header()->dest); + LWIP_DEBUGF(IGMP_DEBUG, (" on if %p\n", (void *)inp)); + + /* Now calculate and check the checksum */ + igmp = (struct igmp_msg *)p->payload; + if (inet_chksum(igmp, p->len)) { + pbuf_free(p); + IGMP_STATS_INC(igmp.chkerr); + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_input: checksum error\n")); + return; + } + + /* Packet is ok so find an existing group */ + group = igmp_lookfor_group(inp, dest); /* use the destination IP address of incoming packet */ + + /* If group can be found or create... */ + if (!group) { + pbuf_free(p); + IGMP_STATS_INC(igmp.drop); + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_input: IGMP frame not for us\n")); + return; + } + + /* NOW ACT ON THE INCOMING MESSAGE TYPE... */ + switch (igmp->igmp_msgtype) { + case IGMP_MEMB_QUERY: + /* IGMP_MEMB_QUERY to the "all systems" address ? */ + if ((ip4_addr_cmp(dest, &allsystems)) && ip4_addr_isany(&igmp->igmp_group_address)) { + /* THIS IS THE GENERAL QUERY */ + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_input: General IGMP_MEMB_QUERY on \"ALL SYSTEMS\" address (224.0.0.1) [igmp_maxresp=%i]\n", (int)(igmp->igmp_maxresp))); + + if (igmp->igmp_maxresp == 0) { + IGMP_STATS_INC(igmp.rx_v1); + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_input: got an all hosts query with time== 0 - this is V1 and not implemented - treat as v2\n")); + igmp->igmp_maxresp = IGMP_V1_DELAYING_MEMBER_TMR; + } else { + IGMP_STATS_INC(igmp.rx_general); + } + + groupref = netif_igmp_data(inp); + + /* Do not send messages on the all systems group address! */ + /* Skip the first group in the list, it is always the allsystems group added in igmp_start() */ + if (groupref != NULL) { + groupref = groupref->next; + } + + while (groupref) { + igmp_delaying_member(groupref, igmp->igmp_maxresp); + groupref = groupref->next; + } + } else { + /* IGMP_MEMB_QUERY to a specific group ? */ + if (!ip4_addr_isany(&igmp->igmp_group_address)) { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_input: IGMP_MEMB_QUERY to a specific group ")); + ip4_addr_debug_print_val(IGMP_DEBUG, igmp->igmp_group_address); + if (ip4_addr_cmp(dest, &allsystems)) { + ip4_addr_t groupaddr; + LWIP_DEBUGF(IGMP_DEBUG, (" using \"ALL SYSTEMS\" address (224.0.0.1) [igmp_maxresp=%i]\n", (int)(igmp->igmp_maxresp))); + /* we first need to re-look for the group since we used dest last time */ + ip4_addr_copy(groupaddr, igmp->igmp_group_address); + group = igmp_lookfor_group(inp, &groupaddr); + } else { + LWIP_DEBUGF(IGMP_DEBUG, (" with the group address as destination [igmp_maxresp=%i]\n", (int)(igmp->igmp_maxresp))); + } + + if (group != NULL) { + IGMP_STATS_INC(igmp.rx_group); + igmp_delaying_member(group, igmp->igmp_maxresp); + } else { + IGMP_STATS_INC(igmp.drop); + } + } else { + IGMP_STATS_INC(igmp.proterr); + } + } + break; + case IGMP_V2_MEMB_REPORT: + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_input: IGMP_V2_MEMB_REPORT\n")); + IGMP_STATS_INC(igmp.rx_report); + if (group->group_state == IGMP_GROUP_DELAYING_MEMBER) { + /* This is on a specific group we have already looked up */ + group->timer = 0; /* stopped */ + group->group_state = IGMP_GROUP_IDLE_MEMBER; + group->last_reporter_flag = 0; + } + break; + default: + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_input: unexpected msg %d in state %d on group %p on if %p\n", + igmp->igmp_msgtype, group->group_state, (void *)&group, (void *)inp)); + IGMP_STATS_INC(igmp.proterr); + break; + } + + pbuf_free(p); + return; +} + +/** + * @ingroup igmp + * Join a group on one network interface. + * + * @param ifaddr ip address of the network interface which should join a new group + * @param groupaddr the ip address of the group which to join + * @return ERR_OK if group was joined on the netif(s), an err_t otherwise + */ +err_t +igmp_joingroup(const ip4_addr_t *ifaddr, const ip4_addr_t *groupaddr) +{ + err_t err = ERR_VAL; /* no matching interface */ + struct netif *netif; + + LWIP_ASSERT_CORE_LOCKED(); + + /* make sure it is multicast address */ + LWIP_ERROR("igmp_joingroup: attempt to join non-multicast address", ip4_addr_ismulticast(groupaddr), return ERR_VAL;); + LWIP_ERROR("igmp_joingroup: attempt to join allsystems address", (!ip4_addr_cmp(groupaddr, &allsystems)), return ERR_VAL;); + + /* loop through netif's */ + NETIF_FOREACH(netif) { + /* Should we join this interface ? */ + if ((netif->flags & NETIF_FLAG_IGMP) && ((ip4_addr_isany(ifaddr) || ip4_addr_cmp(netif_ip4_addr(netif), ifaddr)))) { + err = igmp_joingroup_netif(netif, groupaddr); + if (err != ERR_OK) { + /* Return an error even if some network interfaces are joined */ + /** @todo undo any other netif already joined */ + return err; + } + } + } + + return err; +} + +/** + * @ingroup igmp + * Join a group on one network interface. + * + * @param netif the network interface which should join a new group + * @param groupaddr the ip address of the group which to join + * @return ERR_OK if group was joined on the netif, an err_t otherwise + */ +err_t +igmp_joingroup_netif(struct netif *netif, const ip4_addr_t *groupaddr) +{ + struct igmp_group *group; + + LWIP_ASSERT_CORE_LOCKED(); + + /* make sure it is multicast address */ + LWIP_ERROR("igmp_joingroup_netif: attempt to join non-multicast address", ip4_addr_ismulticast(groupaddr), return ERR_VAL;); + LWIP_ERROR("igmp_joingroup_netif: attempt to join allsystems address", (!ip4_addr_cmp(groupaddr, &allsystems)), return ERR_VAL;); + + /* make sure it is an igmp-enabled netif */ + LWIP_ERROR("igmp_joingroup_netif: attempt to join on non-IGMP netif", netif->flags & NETIF_FLAG_IGMP, return ERR_VAL;); + + /* find group or create a new one if not found */ + group = igmp_lookup_group(netif, groupaddr); + + if (group != NULL) { + /* This should create a new group, check the state to make sure */ + if (group->group_state != IGMP_GROUP_NON_MEMBER) { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_joingroup_netif: join to group not in state IGMP_GROUP_NON_MEMBER\n")); + } else { + /* OK - it was new group */ + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_joingroup_netif: join to new group: ")); + ip4_addr_debug_print(IGMP_DEBUG, groupaddr); + LWIP_DEBUGF(IGMP_DEBUG, ("\n")); + + /* If first use of the group, allow the group at the MAC level */ + if ((group->use == 0) && (netif->igmp_mac_filter != NULL)) { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_joingroup_netif: igmp_mac_filter(ADD ")); + ip4_addr_debug_print(IGMP_DEBUG, groupaddr); + LWIP_DEBUGF(IGMP_DEBUG, (") on if %p\n", (void *)netif)); + netif->igmp_mac_filter(netif, groupaddr, NETIF_ADD_MAC_FILTER); + } + + IGMP_STATS_INC(igmp.tx_join); + igmp_send(netif, group, IGMP_V2_MEMB_REPORT); + + igmp_start_timer(group, IGMP_JOIN_DELAYING_MEMBER_TMR); + + /* Need to work out where this timer comes from */ + group->group_state = IGMP_GROUP_DELAYING_MEMBER; + } + /* Increment group use */ + group->use++; + /* Join on this interface */ + return ERR_OK; + } else { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_joingroup_netif: Not enough memory to join to group\n")); + return ERR_MEM; + } +} + +/** + * @ingroup igmp + * Leave a group on one network interface. + * + * @param ifaddr ip address of the network interface which should leave a group + * @param groupaddr the ip address of the group which to leave + * @return ERR_OK if group was left on the netif(s), an err_t otherwise + */ +err_t +igmp_leavegroup(const ip4_addr_t *ifaddr, const ip4_addr_t *groupaddr) +{ + err_t err = ERR_VAL; /* no matching interface */ + struct netif *netif; + + LWIP_ASSERT_CORE_LOCKED(); + + /* make sure it is multicast address */ + LWIP_ERROR("igmp_leavegroup: attempt to leave non-multicast address", ip4_addr_ismulticast(groupaddr), return ERR_VAL;); + LWIP_ERROR("igmp_leavegroup: attempt to leave allsystems address", (!ip4_addr_cmp(groupaddr, &allsystems)), return ERR_VAL;); + + /* loop through netif's */ + NETIF_FOREACH(netif) { + /* Should we leave this interface ? */ + if ((netif->flags & NETIF_FLAG_IGMP) && ((ip4_addr_isany(ifaddr) || ip4_addr_cmp(netif_ip4_addr(netif), ifaddr)))) { + err_t res = igmp_leavegroup_netif(netif, groupaddr); + if (err != ERR_OK) { + /* Store this result if we have not yet gotten a success */ + err = res; + } + } + } + + return err; +} + +/** + * @ingroup igmp + * Leave a group on one network interface. + * + * @param netif the network interface which should leave a group + * @param groupaddr the ip address of the group which to leave + * @return ERR_OK if group was left on the netif, an err_t otherwise + */ +err_t +igmp_leavegroup_netif(struct netif *netif, const ip4_addr_t *groupaddr) +{ + struct igmp_group *group; + + LWIP_ASSERT_CORE_LOCKED(); + + /* make sure it is multicast address */ + LWIP_ERROR("igmp_leavegroup_netif: attempt to leave non-multicast address", ip4_addr_ismulticast(groupaddr), return ERR_VAL;); + LWIP_ERROR("igmp_leavegroup_netif: attempt to leave allsystems address", (!ip4_addr_cmp(groupaddr, &allsystems)), return ERR_VAL;); + + /* make sure it is an igmp-enabled netif */ + LWIP_ERROR("igmp_leavegroup_netif: attempt to leave on non-IGMP netif", netif->flags & NETIF_FLAG_IGMP, return ERR_VAL;); + + /* find group */ + group = igmp_lookfor_group(netif, groupaddr); + + if (group != NULL) { + /* Only send a leave if the flag is set according to the state diagram */ + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_leavegroup_netif: Leaving group: ")); + ip4_addr_debug_print(IGMP_DEBUG, groupaddr); + LWIP_DEBUGF(IGMP_DEBUG, ("\n")); + + /* If there is no other use of the group */ + if (group->use <= 1) { + /* Remove the group from the list */ + igmp_remove_group(netif, group); + + /* If we are the last reporter for this group */ + if (group->last_reporter_flag) { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_leavegroup_netif: sending leaving group\n")); + IGMP_STATS_INC(igmp.tx_leave); + igmp_send(netif, group, IGMP_LEAVE_GROUP); + } + + /* Disable the group at the MAC level */ + if (netif->igmp_mac_filter != NULL) { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_leavegroup_netif: igmp_mac_filter(DEL ")); + ip4_addr_debug_print(IGMP_DEBUG, groupaddr); + LWIP_DEBUGF(IGMP_DEBUG, (") on if %p\n", (void *)netif)); + netif->igmp_mac_filter(netif, groupaddr, NETIF_DEL_MAC_FILTER); + } + + /* Free group struct */ + memp_free(MEMP_IGMP_GROUP, group); + } else { + /* Decrement group use */ + group->use--; + } + return ERR_OK; + } else { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_leavegroup_netif: not member of group\n")); + return ERR_VAL; + } +} + +/** + * The igmp timer function (both for NO_SYS=1 and =0) + * Should be called every IGMP_TMR_INTERVAL milliseconds (100 ms is default). + */ +void +igmp_tmr(void) +{ + struct netif *netif; + + NETIF_FOREACH(netif) { + struct igmp_group *group = netif_igmp_data(netif); + + while (group != NULL) { + if (group->timer > 0) { + group->timer--; + if (group->timer == 0) { + igmp_timeout(netif, group); + } + } + group = group->next; + } + } +} + +/** + * Called if a timeout for one group is reached. + * Sends a report for this group. + * + * @param group an igmp_group for which a timeout is reached + */ +static void +igmp_timeout(struct netif *netif, struct igmp_group *group) +{ + /* If the state is IGMP_GROUP_DELAYING_MEMBER then we send a report for this group + (unless it is the allsystems group) */ + if ((group->group_state == IGMP_GROUP_DELAYING_MEMBER) && + (!(ip4_addr_cmp(&(group->group_address), &allsystems)))) { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_timeout: report membership for group with address ")); + ip4_addr_debug_print_val(IGMP_DEBUG, group->group_address); + LWIP_DEBUGF(IGMP_DEBUG, (" on if %p\n", (void *)netif)); + + group->group_state = IGMP_GROUP_IDLE_MEMBER; + + IGMP_STATS_INC(igmp.tx_report); + igmp_send(netif, group, IGMP_V2_MEMB_REPORT); + } +} + +/** + * Start a timer for an igmp group + * + * @param group the igmp_group for which to start a timer + * @param max_time the time in multiples of IGMP_TMR_INTERVAL (decrease with + * every call to igmp_tmr()) + */ +static void +igmp_start_timer(struct igmp_group *group, u8_t max_time) +{ +#ifdef LWIP_RAND + group->timer = (u16_t)(max_time > 2 ? (LWIP_RAND() % max_time) : 1); +#else /* LWIP_RAND */ + /* ATTENTION: use this only if absolutely necessary! */ + group->timer = max_time / 2; +#endif /* LWIP_RAND */ + + if (group->timer == 0) { + group->timer = 1; + } +} + +/** + * Delaying membership report for a group if necessary + * + * @param group the igmp_group for which "delaying" membership report + * @param maxresp query delay + */ +static void +igmp_delaying_member(struct igmp_group *group, u8_t maxresp) +{ + if ((group->group_state == IGMP_GROUP_IDLE_MEMBER) || + ((group->group_state == IGMP_GROUP_DELAYING_MEMBER) && + ((group->timer == 0) || (maxresp < group->timer)))) { + igmp_start_timer(group, maxresp); + group->group_state = IGMP_GROUP_DELAYING_MEMBER; + } +} + + +/** + * Sends an IP packet on a network interface. This function constructs the IP header + * and calculates the IP header checksum. If the source IP address is NULL, + * the IP address of the outgoing network interface is filled in as source address. + * + * @param p the packet to send (p->payload points to the data, e.g. next + protocol header; if dest == LWIP_IP_HDRINCL, p already includes an + IP header and p->payload points to that IP header) + * @param src the source IP address to send from (if src == IP4_ADDR_ANY, the + * IP address of the netif used to send is used as source address) + * @param dest the destination IP address to send the packet to + * @param netif the netif on which to send this packet + * @return ERR_OK if the packet was sent OK + * ERR_BUF if p doesn't have enough space for IP/LINK headers + * returns errors returned by netif->output + */ +static err_t +igmp_ip_output_if(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, struct netif *netif) +{ + /* This is the "router alert" option */ + u16_t ra[2]; + ra[0] = PP_HTONS(ROUTER_ALERT); + ra[1] = 0x0000; /* Router shall examine packet */ + IGMP_STATS_INC(igmp.xmit); + return ip4_output_if_opt(p, src, dest, IGMP_TTL, 0, IP_PROTO_IGMP, netif, ra, ROUTER_ALERTLEN); +} + +/** + * Send an igmp packet to a specific group. + * + * @param group the group to which to send the packet + * @param type the type of igmp packet to send + */ +static void +igmp_send(struct netif *netif, struct igmp_group *group, u8_t type) +{ + struct pbuf *p = NULL; + struct igmp_msg *igmp = NULL; + ip4_addr_t src = *IP4_ADDR_ANY4; + ip4_addr_t *dest = NULL; + + /* IP header + "router alert" option + IGMP header */ + p = pbuf_alloc(PBUF_TRANSPORT, IGMP_MINLEN, PBUF_RAM); + + if (p) { + igmp = (struct igmp_msg *)p->payload; + LWIP_ASSERT("igmp_send: check that first pbuf can hold struct igmp_msg", + (p->len >= sizeof(struct igmp_msg))); + ip4_addr_copy(src, *netif_ip4_addr(netif)); + + if (type == IGMP_V2_MEMB_REPORT) { + dest = &(group->group_address); + ip4_addr_copy(igmp->igmp_group_address, group->group_address); + group->last_reporter_flag = 1; /* Remember we were the last to report */ + } else { + if (type == IGMP_LEAVE_GROUP) { + dest = &allrouters; + ip4_addr_copy(igmp->igmp_group_address, group->group_address); + } + } + + if ((type == IGMP_V2_MEMB_REPORT) || (type == IGMP_LEAVE_GROUP)) { + igmp->igmp_msgtype = type; + igmp->igmp_maxresp = 0; + igmp->igmp_checksum = 0; + igmp->igmp_checksum = inet_chksum(igmp, IGMP_MINLEN); + + igmp_ip_output_if(p, &src, dest, netif); + } + + pbuf_free(p); + } else { + LWIP_DEBUGF(IGMP_DEBUG, ("igmp_send: not enough memory for igmp_send\n")); + IGMP_STATS_INC(igmp.memerr); + } +} + +#endif /* LWIP_IPV4 && LWIP_IGMP */ diff --git a/Other/tun2socks/core/c/core/ipv4/ip4.c b/Other/tun2socks/core/c/core/ipv4/ip4.c new file mode 100644 index 0000000..5e74940 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv4/ip4.c @@ -0,0 +1,1145 @@ +/** + * @file + * This is the IPv4 layer implementation for incoming and outgoing IP traffic. + * + * @see ip_frag.c + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV4 + +#include "lwip/ip.h" +#include "lwip/def.h" +#include "lwip/mem.h" +#include "lwip/ip4_frag.h" +#include "lwip/inet_chksum.h" +#include "lwip/netif.h" +#include "lwip/icmp.h" +#include "lwip/igmp.h" +#include "lwip/priv/raw_priv.h" +#include "lwip/udp.h" +#include "lwip/priv/tcp_priv.h" +#include "lwip/autoip.h" +#include "lwip/stats.h" +#include "lwip/prot/iana.h" + +#include + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif + +/** Set this to 0 in the rare case of wanting to call an extra function to + * generate the IP checksum (in contrast to calculating it on-the-fly). */ +#ifndef LWIP_INLINE_IP_CHKSUM +#if LWIP_CHECKSUM_CTRL_PER_NETIF +#define LWIP_INLINE_IP_CHKSUM 0 +#else /* LWIP_CHECKSUM_CTRL_PER_NETIF */ +#define LWIP_INLINE_IP_CHKSUM 1 +#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF */ +#endif + +#if LWIP_INLINE_IP_CHKSUM && CHECKSUM_GEN_IP +#define CHECKSUM_GEN_IP_INLINE 1 +#else +#define CHECKSUM_GEN_IP_INLINE 0 +#endif + +#if LWIP_DHCP || defined(LWIP_IP_ACCEPT_UDP_PORT) +#define IP_ACCEPT_LINK_LAYER_ADDRESSING 1 + +/** Some defines for DHCP to let link-layer-addressed packets through while the + * netif is down. + * To use this in your own application/protocol, define LWIP_IP_ACCEPT_UDP_PORT(port) + * to return 1 if the port is accepted and 0 if the port is not accepted. + */ +#if LWIP_DHCP && defined(LWIP_IP_ACCEPT_UDP_PORT) +/* accept DHCP client port and custom port */ +#define IP_ACCEPT_LINK_LAYER_ADDRESSED_PORT(port) (((port) == PP_NTOHS(LWIP_IANA_PORT_DHCP_CLIENT)) \ + || (LWIP_IP_ACCEPT_UDP_PORT(port))) +#elif defined(LWIP_IP_ACCEPT_UDP_PORT) /* LWIP_DHCP && defined(LWIP_IP_ACCEPT_UDP_PORT) */ +/* accept custom port only */ +#define IP_ACCEPT_LINK_LAYER_ADDRESSED_PORT(port) (LWIP_IP_ACCEPT_UDP_PORT(port)) +#else /* LWIP_DHCP && defined(LWIP_IP_ACCEPT_UDP_PORT) */ +/* accept DHCP client port only */ +#define IP_ACCEPT_LINK_LAYER_ADDRESSED_PORT(port) ((port) == PP_NTOHS(LWIP_IANA_PORT_DHCP_CLIENT)) +#endif /* LWIP_DHCP && defined(LWIP_IP_ACCEPT_UDP_PORT) */ + +#else /* LWIP_DHCP */ +#define IP_ACCEPT_LINK_LAYER_ADDRESSING 0 +#endif /* LWIP_DHCP */ + +/** The IP header ID of the next outgoing IP packet */ +static u16_t ip_id; + +#if LWIP_MULTICAST_TX_OPTIONS +/** The default netif used for multicast */ +static struct netif *ip4_default_multicast_netif; + +/** + * @ingroup ip4 + * Set a default netif for IPv4 multicast. */ +void +ip4_set_default_multicast_netif(struct netif *default_multicast_netif) +{ + ip4_default_multicast_netif = default_multicast_netif; +} +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + +#ifdef LWIP_HOOK_IP4_ROUTE_SRC +/** + * Source based IPv4 routing must be fully implemented in + * LWIP_HOOK_IP4_ROUTE_SRC(). This function only provides the parameters. + */ +struct netif * +ip4_route_src(const ip4_addr_t *src, const ip4_addr_t *dest) +{ + if (src != NULL) { + /* when src==NULL, the hook is called from ip4_route(dest) */ + struct netif *netif = LWIP_HOOK_IP4_ROUTE_SRC(src, dest); + if (netif != NULL) { + return netif; + } + } + return ip4_route(dest); +} +#endif /* LWIP_HOOK_IP4_ROUTE_SRC */ + +/** + * Finds the appropriate network interface for a given IP address. It + * searches the list of network interfaces linearly. A match is found + * if the masked IP address of the network interface equals the masked + * IP address given to the function. + * + * @param dest the destination IP address for which to find the route + * @return the netif on which to send to reach dest + */ +struct netif * +ip4_route(const ip4_addr_t *dest) +{ +#if TUN2SOCKS + // go-tun2socks logic + // no routing and just use the default netif, netif_list[0], i.e., the loopif + // enable loopif by setting LWIP_HAVE_LOOPIF = 1 in lwipopts.h + return netif_list; +#endif /* TUN2SOCKS */ + +#if !LWIP_SINGLE_NETIF + struct netif *netif; + + LWIP_ASSERT_CORE_LOCKED(); + +#if LWIP_MULTICAST_TX_OPTIONS + /* Use administratively selected interface for multicast by default */ + if (ip4_addr_ismulticast(dest) && ip4_default_multicast_netif) { + return ip4_default_multicast_netif; + } +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + + /* bug #54569: in case LWIP_SINGLE_NETIF=1 and LWIP_DEBUGF() disabled, the following loop is optimized away */ + LWIP_UNUSED_ARG(dest); + + /* iterate through netifs */ + NETIF_FOREACH(netif) { + /* is the netif up, does it have a link and a valid address? */ + if (netif_is_up(netif) && netif_is_link_up(netif) && !ip4_addr_isany_val(*netif_ip4_addr(netif))) { + /* network mask matches? */ + if (ip4_addr_netcmp(dest, netif_ip4_addr(netif), netif_ip4_netmask(netif))) { + /* return netif on which to forward IP packet */ + return netif; + } + /* gateway matches on a non broadcast interface? (i.e. peer in a point to point interface) */ + if (((netif->flags & NETIF_FLAG_BROADCAST) == 0) && ip4_addr_cmp(dest, netif_ip4_gw(netif))) { + /* return netif on which to forward IP packet */ + return netif; + } + } + } + +#if LWIP_NETIF_LOOPBACK && !LWIP_HAVE_LOOPIF + /* loopif is disabled, looopback traffic is passed through any netif */ + if (ip4_addr_isloopback(dest)) { + /* don't check for link on loopback traffic */ + if (netif_default != NULL && netif_is_up(netif_default)) { + return netif_default; + } + /* default netif is not up, just use any netif for loopback traffic */ + NETIF_FOREACH(netif) { + if (netif_is_up(netif)) { + return netif; + } + } + return NULL; + } +#endif /* LWIP_NETIF_LOOPBACK && !LWIP_HAVE_LOOPIF */ + +#ifdef LWIP_HOOK_IP4_ROUTE_SRC + netif = LWIP_HOOK_IP4_ROUTE_SRC(NULL, dest); + if (netif != NULL) { + return netif; + } +#elif defined(LWIP_HOOK_IP4_ROUTE) + netif = LWIP_HOOK_IP4_ROUTE(dest); + if (netif != NULL) { + return netif; + } +#endif +#endif /* !LWIP_SINGLE_NETIF */ + + if ((netif_default == NULL) || !netif_is_up(netif_default) || !netif_is_link_up(netif_default) || + ip4_addr_isany_val(*netif_ip4_addr(netif_default)) || ip4_addr_isloopback(dest)) { + /* No matching netif found and default netif is not usable. + If this is not good enough for you, use LWIP_HOOK_IP4_ROUTE() */ + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip4_route: No route to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + ip4_addr1_16(dest), ip4_addr2_16(dest), ip4_addr3_16(dest), ip4_addr4_16(dest))); + IP_STATS_INC(ip.rterr); + MIB2_STATS_INC(mib2.ipoutnoroutes); + return NULL; + } + + return netif_default; +} + +#if IP_FORWARD +/** + * Determine whether an IP address is in a reserved set of addresses + * that may not be forwarded, or whether datagrams to that destination + * may be forwarded. + * @param p the packet to forward + * @return 1: can forward 0: discard + */ +static int +ip4_canforward(struct pbuf *p) +{ + u32_t addr = lwip_htonl(ip4_addr_get_u32(ip4_current_dest_addr())); + +#ifdef LWIP_HOOK_IP4_CANFORWARD + int ret = LWIP_HOOK_IP4_CANFORWARD(p, addr); + if (ret >= 0) { + return ret; + } +#endif /* LWIP_HOOK_IP4_CANFORWARD */ + + if (p->flags & PBUF_FLAG_LLBCAST) { + /* don't route link-layer broadcasts */ + return 0; + } + if ((p->flags & PBUF_FLAG_LLMCAST) || IP_MULTICAST(addr)) { + /* don't route link-layer multicasts (use LWIP_HOOK_IP4_CANFORWARD instead) */ + return 0; + } + if (IP_EXPERIMENTAL(addr)) { + return 0; + } + if (IP_CLASSA(addr)) { + u32_t net = addr & IP_CLASSA_NET; + if ((net == 0) || (net == ((u32_t)IP_LOOPBACKNET << IP_CLASSA_NSHIFT))) { + /* don't route loopback packets */ + return 0; + } + } + return 1; +} + +/** + * Forwards an IP packet. It finds an appropriate route for the + * packet, decrements the TTL value of the packet, adjusts the + * checksum and outputs the packet on the appropriate interface. + * + * @param p the packet to forward (p->payload points to IP header) + * @param iphdr the IP header of the input packet + * @param inp the netif on which this packet was received + */ +static void +ip4_forward(struct pbuf *p, struct ip_hdr *iphdr, struct netif *inp) +{ + struct netif *netif; + + PERF_START; + LWIP_UNUSED_ARG(inp); + + if (!ip4_canforward(p)) { + goto return_noroute; + } + + /* RFC3927 2.7: do not forward link-local addresses */ + if (ip4_addr_islinklocal(ip4_current_dest_addr())) { + LWIP_DEBUGF(IP_DEBUG, ("ip4_forward: not forwarding LLA %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + ip4_addr1_16(ip4_current_dest_addr()), ip4_addr2_16(ip4_current_dest_addr()), + ip4_addr3_16(ip4_current_dest_addr()), ip4_addr4_16(ip4_current_dest_addr()))); + goto return_noroute; + } + + /* Find network interface where to forward this IP packet to. */ + netif = ip4_route_src(ip4_current_src_addr(), ip4_current_dest_addr()); + if (netif == NULL) { + LWIP_DEBUGF(IP_DEBUG, ("ip4_forward: no forwarding route for %"U16_F".%"U16_F".%"U16_F".%"U16_F" found\n", + ip4_addr1_16(ip4_current_dest_addr()), ip4_addr2_16(ip4_current_dest_addr()), + ip4_addr3_16(ip4_current_dest_addr()), ip4_addr4_16(ip4_current_dest_addr()))); + /* @todo: send ICMP_DUR_NET? */ + goto return_noroute; + } +#if !IP_FORWARD_ALLOW_TX_ON_RX_NETIF + /* Do not forward packets onto the same network interface on which + * they arrived. */ + if (netif == inp) { + LWIP_DEBUGF(IP_DEBUG, ("ip4_forward: not bouncing packets back on incoming interface.\n")); + goto return_noroute; + } +#endif /* IP_FORWARD_ALLOW_TX_ON_RX_NETIF */ + + /* decrement TTL */ + IPH_TTL_SET(iphdr, IPH_TTL(iphdr) - 1); + /* send ICMP if TTL == 0 */ + if (IPH_TTL(iphdr) == 0) { + MIB2_STATS_INC(mib2.ipinhdrerrors); +#if LWIP_ICMP + /* Don't send ICMP messages in response to ICMP messages */ + if (IPH_PROTO(iphdr) != IP_PROTO_ICMP) { + icmp_time_exceeded(p, ICMP_TE_TTL); + } +#endif /* LWIP_ICMP */ + return; + } + + /* Incrementally update the IP checksum. */ + if (IPH_CHKSUM(iphdr) >= PP_HTONS(0xffffU - 0x100)) { + IPH_CHKSUM_SET(iphdr, (u16_t)(IPH_CHKSUM(iphdr) + PP_HTONS(0x100) + 1)); + } else { + IPH_CHKSUM_SET(iphdr, (u16_t)(IPH_CHKSUM(iphdr) + PP_HTONS(0x100))); + } + + LWIP_DEBUGF(IP_DEBUG, ("ip4_forward: forwarding packet to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + ip4_addr1_16(ip4_current_dest_addr()), ip4_addr2_16(ip4_current_dest_addr()), + ip4_addr3_16(ip4_current_dest_addr()), ip4_addr4_16(ip4_current_dest_addr()))); + + IP_STATS_INC(ip.fw); + MIB2_STATS_INC(mib2.ipforwdatagrams); + IP_STATS_INC(ip.xmit); + + PERF_STOP("ip4_forward"); + /* don't fragment if interface has mtu set to 0 [loopif] */ + if (netif->mtu && (p->tot_len > netif->mtu)) { + if ((IPH_OFFSET(iphdr) & PP_NTOHS(IP_DF)) == 0) { +#if IP_FRAG + ip4_frag(p, netif, ip4_current_dest_addr()); +#else /* IP_FRAG */ + /* @todo: send ICMP Destination Unreachable code 13 "Communication administratively prohibited"? */ +#endif /* IP_FRAG */ + } else { +#if LWIP_ICMP + /* send ICMP Destination Unreachable code 4: "Fragmentation Needed and DF Set" */ + icmp_dest_unreach(p, ICMP_DUR_FRAG); +#endif /* LWIP_ICMP */ + } + return; + } + /* transmit pbuf on chosen interface */ + netif->output(netif, p, ip4_current_dest_addr()); + return; +return_noroute: + MIB2_STATS_INC(mib2.ipoutnoroutes); +} +#endif /* IP_FORWARD */ + +/** Return true if the current input packet should be accepted on this netif */ +static int +ip4_input_accept(struct netif *netif) +{ +#if TUN2SOCKS + // go-tun2socks logic + // all packets are accepted by the first one, and it should be the loopif + return 1; +#endif /* TUN2SOCKS */ + + LWIP_DEBUGF(IP_DEBUG, ("ip_input: iphdr->dest 0x%"X32_F" netif->ip_addr 0x%"X32_F" (0x%"X32_F", 0x%"X32_F", 0x%"X32_F")\n", + ip4_addr_get_u32(ip4_current_dest_addr()), ip4_addr_get_u32(netif_ip4_addr(netif)), + ip4_addr_get_u32(ip4_current_dest_addr()) & ip4_addr_get_u32(netif_ip4_netmask(netif)), + ip4_addr_get_u32(netif_ip4_addr(netif)) & ip4_addr_get_u32(netif_ip4_netmask(netif)), + ip4_addr_get_u32(ip4_current_dest_addr()) & ~ip4_addr_get_u32(netif_ip4_netmask(netif)))); + + /* interface is up and configured? */ + if ((netif_is_up(netif)) && (!ip4_addr_isany_val(*netif_ip4_addr(netif)))) { + /* unicast to this interface address? */ + if (ip4_addr_cmp(ip4_current_dest_addr(), netif_ip4_addr(netif)) || + /* or broadcast on this interface network address? */ + ip4_addr_isbroadcast(ip4_current_dest_addr(), netif) +#if LWIP_NETIF_LOOPBACK && !LWIP_HAVE_LOOPIF + || (ip4_addr_get_u32(ip4_current_dest_addr()) == PP_HTONL(IPADDR_LOOPBACK)) +#endif /* LWIP_NETIF_LOOPBACK && !LWIP_HAVE_LOOPIF */ + ) { + LWIP_DEBUGF(IP_DEBUG, ("ip4_input: packet accepted on interface %c%c\n", + netif->name[0], netif->name[1])); + /* accept on this netif */ + return 1; + } +#if LWIP_AUTOIP + /* connections to link-local addresses must persist after changing + the netif's address (RFC3927 ch. 1.9) */ + if (autoip_accept_packet(netif, ip4_current_dest_addr())) { + LWIP_DEBUGF(IP_DEBUG, ("ip4_input: LLA packet accepted on interface %c%c\n", + netif->name[0], netif->name[1])); + /* accept on this netif */ + return 1; + } +#endif /* LWIP_AUTOIP */ + } + return 0; +} + +/** + * This function is called by the network interface device driver when + * an IP packet is received. The function does the basic checks of the + * IP header such as packet size being at least larger than the header + * size etc. If the packet was not destined for us, the packet is + * forwarded (using ip_forward). The IP checksum is always checked. + * + * Finally, the packet is sent to the upper layer protocol input function. + * + * @param p the received IP packet (p->payload points to IP header) + * @param inp the netif on which this packet was received + * @return ERR_OK if the packet was processed (could return ERR_* if it wasn't + * processed, but currently always returns ERR_OK) + */ +err_t +ip4_input(struct pbuf *p, struct netif *inp) +{ + const struct ip_hdr *iphdr; + struct netif *netif; + u16_t iphdr_hlen; + u16_t iphdr_len; +#if IP_ACCEPT_LINK_LAYER_ADDRESSING || LWIP_IGMP + int check_ip_src = 1; +#endif /* IP_ACCEPT_LINK_LAYER_ADDRESSING || LWIP_IGMP */ +#if LWIP_RAW + raw_input_state_t raw_status; +#endif /* LWIP_RAW */ + + LWIP_ASSERT_CORE_LOCKED(); + + IP_STATS_INC(ip.recv); + MIB2_STATS_INC(mib2.ipinreceives); + + /* identify the IP header */ + iphdr = (struct ip_hdr *)p->payload; + if (IPH_V(iphdr) != 4) { + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_WARNING, ("IP packet dropped due to bad version number %"U16_F"\n", (u16_t)IPH_V(iphdr))); + ip4_debug_print(p); + pbuf_free(p); + IP_STATS_INC(ip.err); + IP_STATS_INC(ip.drop); + MIB2_STATS_INC(mib2.ipinhdrerrors); + return ERR_OK; + } + +#ifdef LWIP_HOOK_IP4_INPUT + if (LWIP_HOOK_IP4_INPUT(p, inp)) { + /* the packet has been eaten */ + return ERR_OK; + } +#endif + + /* obtain IP header length in bytes */ + iphdr_hlen = IPH_HL_BYTES(iphdr); + /* obtain ip length in bytes */ + iphdr_len = lwip_ntohs(IPH_LEN(iphdr)); + + /* Trim pbuf. This is especially required for packets < 60 bytes. */ + if (iphdr_len < p->tot_len) { + pbuf_realloc(p, iphdr_len); + } + + /* header length exceeds first pbuf length, or ip length exceeds total pbuf length? */ + if ((iphdr_hlen > p->len) || (iphdr_len > p->tot_len) || (iphdr_hlen < IP_HLEN)) { + if (iphdr_hlen < IP_HLEN) { + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("ip4_input: short IP header (%"U16_F" bytes) received, IP packet dropped\n", iphdr_hlen)); + } + if (iphdr_hlen > p->len) { + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("IP header (len %"U16_F") does not fit in first pbuf (len %"U16_F"), IP packet dropped.\n", + iphdr_hlen, p->len)); + } + if (iphdr_len > p->tot_len) { + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("IP (len %"U16_F") is longer than pbuf (len %"U16_F"), IP packet dropped.\n", + iphdr_len, p->tot_len)); + } + /* free (drop) packet pbufs */ + pbuf_free(p); + IP_STATS_INC(ip.lenerr); + IP_STATS_INC(ip.drop); + MIB2_STATS_INC(mib2.ipindiscards); + return ERR_OK; + } + + /* verify checksum */ +#if CHECKSUM_CHECK_IP + IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_CHECK_IP) { + if (inet_chksum(iphdr, iphdr_hlen) != 0) { + + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("Checksum (0x%"X16_F") failed, IP packet dropped.\n", inet_chksum(iphdr, iphdr_hlen))); + ip4_debug_print(p); + pbuf_free(p); + IP_STATS_INC(ip.chkerr); + IP_STATS_INC(ip.drop); + MIB2_STATS_INC(mib2.ipinhdrerrors); + return ERR_OK; + } + } +#endif + + /* copy IP addresses to aligned ip_addr_t */ + ip_addr_copy_from_ip4(ip_data.current_iphdr_dest, iphdr->dest); + ip_addr_copy_from_ip4(ip_data.current_iphdr_src, iphdr->src); + + /* match packet against an interface, i.e. is this packet for us? */ + if (ip4_addr_ismulticast(ip4_current_dest_addr())) { +#if LWIP_IGMP + if ((inp->flags & NETIF_FLAG_IGMP) && (igmp_lookfor_group(inp, ip4_current_dest_addr()))) { + /* IGMP snooping switches need 0.0.0.0 to be allowed as source address (RFC 4541) */ + ip4_addr_t allsystems; + IP4_ADDR(&allsystems, 224, 0, 0, 1); + if (ip4_addr_cmp(ip4_current_dest_addr(), &allsystems) && + ip4_addr_isany(ip4_current_src_addr())) { + check_ip_src = 0; + } + netif = inp; + } else { + netif = NULL; + } +#else /* LWIP_IGMP */ + if ((netif_is_up(inp)) && (!ip4_addr_isany_val(*netif_ip4_addr(inp)))) { + netif = inp; + } else { + netif = NULL; + } +#endif /* LWIP_IGMP */ + } else { + /* start trying with inp. if that's not acceptable, start walking the + list of configured netifs. */ + if (ip4_input_accept(inp)) { + netif = inp; + } else { + netif = NULL; +#if !LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF + /* Packets sent to the loopback address must not be accepted on an + * interface that does not have the loopback address assigned to it, + * unless a non-loopback interface is used for loopback traffic. */ + if (!ip4_addr_isloopback(ip4_current_dest_addr())) +#endif /* !LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF */ + { +#if !LWIP_SINGLE_NETIF + NETIF_FOREACH(netif) { + if (netif == inp) { + /* we checked that before already */ + continue; + } + if (ip4_input_accept(netif)) { + break; + } + } +#endif /* !LWIP_SINGLE_NETIF */ + } + } + } + +#if IP_ACCEPT_LINK_LAYER_ADDRESSING + /* Pass DHCP messages regardless of destination address. DHCP traffic is addressed + * using link layer addressing (such as Ethernet MAC) so we must not filter on IP. + * According to RFC 1542 section 3.1.1, referred by RFC 2131). + * + * If you want to accept private broadcast communication while a netif is down, + * define LWIP_IP_ACCEPT_UDP_PORT(dst_port), e.g.: + * + * #define LWIP_IP_ACCEPT_UDP_PORT(dst_port) ((dst_port) == PP_NTOHS(12345)) + */ + if (netif == NULL) { + /* remote port is DHCP server? */ + if (IPH_PROTO(iphdr) == IP_PROTO_UDP) { + const struct udp_hdr *udphdr = (const struct udp_hdr *)((const u8_t *)iphdr + iphdr_hlen); + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_TRACE, ("ip4_input: UDP packet to DHCP client port %"U16_F"\n", + lwip_ntohs(udphdr->dest))); + if (IP_ACCEPT_LINK_LAYER_ADDRESSED_PORT(udphdr->dest)) { + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_TRACE, ("ip4_input: DHCP packet accepted.\n")); + netif = inp; + check_ip_src = 0; + } + } + } +#endif /* IP_ACCEPT_LINK_LAYER_ADDRESSING */ + + /* broadcast or multicast packet source address? Compliant with RFC 1122: 3.2.1.3 */ +#if LWIP_IGMP || IP_ACCEPT_LINK_LAYER_ADDRESSING + if (check_ip_src +#if IP_ACCEPT_LINK_LAYER_ADDRESSING + /* DHCP servers need 0.0.0.0 to be allowed as source address (RFC 1.1.2.2: 3.2.1.3/a) */ + && !ip4_addr_isany_val(*ip4_current_src_addr()) +#endif /* IP_ACCEPT_LINK_LAYER_ADDRESSING */ + ) +#endif /* LWIP_IGMP || IP_ACCEPT_LINK_LAYER_ADDRESSING */ + { + if ((ip4_addr_isbroadcast(ip4_current_src_addr(), inp)) || + (ip4_addr_ismulticast(ip4_current_src_addr()))) { + /* packet source is not valid */ + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, ("ip4_input: packet source is not valid.\n")); + /* free (drop) packet pbufs */ + pbuf_free(p); + IP_STATS_INC(ip.drop); + MIB2_STATS_INC(mib2.ipinaddrerrors); + MIB2_STATS_INC(mib2.ipindiscards); + return ERR_OK; + } + } + + /* packet not for us? */ + if (netif == NULL) { + /* packet not for us, route or discard */ + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_TRACE, ("ip4_input: packet not for us.\n")); +#if IP_FORWARD + /* non-broadcast packet? */ + if (!ip4_addr_isbroadcast(ip4_current_dest_addr(), inp)) { + /* try to forward IP packet on (other) interfaces */ + ip4_forward(p, (struct ip_hdr *)p->payload, inp); + } else +#endif /* IP_FORWARD */ + { + IP_STATS_INC(ip.drop); + MIB2_STATS_INC(mib2.ipinaddrerrors); + MIB2_STATS_INC(mib2.ipindiscards); + } + pbuf_free(p); + return ERR_OK; + } + /* packet consists of multiple fragments? */ + if ((IPH_OFFSET(iphdr) & PP_HTONS(IP_OFFMASK | IP_MF)) != 0) { +#if IP_REASSEMBLY /* packet fragment reassembly code present? */ + LWIP_DEBUGF(IP_DEBUG, ("IP packet is a fragment (id=0x%04"X16_F" tot_len=%"U16_F" len=%"U16_F" MF=%"U16_F" offset=%"U16_F"), calling ip4_reass()\n", + lwip_ntohs(IPH_ID(iphdr)), p->tot_len, lwip_ntohs(IPH_LEN(iphdr)), (u16_t)!!(IPH_OFFSET(iphdr) & PP_HTONS(IP_MF)), (u16_t)((lwip_ntohs(IPH_OFFSET(iphdr)) & IP_OFFMASK) * 8))); + /* reassemble the packet*/ + p = ip4_reass(p); + /* packet not fully reassembled yet? */ + if (p == NULL) { + return ERR_OK; + } + iphdr = (const struct ip_hdr *)p->payload; +#else /* IP_REASSEMBLY == 0, no packet fragment reassembly code present */ + pbuf_free(p); + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("IP packet dropped since it was fragmented (0x%"X16_F") (while IP_REASSEMBLY == 0).\n", + lwip_ntohs(IPH_OFFSET(iphdr)))); + IP_STATS_INC(ip.opterr); + IP_STATS_INC(ip.drop); + /* unsupported protocol feature */ + MIB2_STATS_INC(mib2.ipinunknownprotos); + return ERR_OK; +#endif /* IP_REASSEMBLY */ + } + +#if IP_OPTIONS_ALLOWED == 0 /* no support for IP options in the IP header? */ + +#if LWIP_IGMP + /* there is an extra "router alert" option in IGMP messages which we allow for but do not police */ + if ((iphdr_hlen > IP_HLEN) && (IPH_PROTO(iphdr) != IP_PROTO_IGMP)) { +#else + if (iphdr_hlen > IP_HLEN) { +#endif /* LWIP_IGMP */ + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("IP packet dropped since there were IP options (while IP_OPTIONS_ALLOWED == 0).\n")); + pbuf_free(p); + IP_STATS_INC(ip.opterr); + IP_STATS_INC(ip.drop); + /* unsupported protocol feature */ + MIB2_STATS_INC(mib2.ipinunknownprotos); + return ERR_OK; + } +#endif /* IP_OPTIONS_ALLOWED == 0 */ + + /* send to upper layers */ + LWIP_DEBUGF(IP_DEBUG, ("ip4_input: \n")); + ip4_debug_print(p); + LWIP_DEBUGF(IP_DEBUG, ("ip4_input: p->len %"U16_F" p->tot_len %"U16_F"\n", p->len, p->tot_len)); + + ip_data.current_netif = netif; + ip_data.current_input_netif = inp; + ip_data.current_ip4_header = iphdr; + ip_data.current_ip_header_tot_len = IPH_HL_BYTES(iphdr); + +#if LWIP_RAW + /* raw input did not eat the packet? */ + raw_status = raw_input(p, inp); + if (raw_status != RAW_INPUT_EATEN) +#endif /* LWIP_RAW */ + { + pbuf_remove_header(p, iphdr_hlen); /* Move to payload, no check necessary. */ + + switch (IPH_PROTO(iphdr)) { +#if LWIP_UDP + case IP_PROTO_UDP: +#if LWIP_UDPLITE + case IP_PROTO_UDPLITE: +#endif /* LWIP_UDPLITE */ + MIB2_STATS_INC(mib2.ipindelivers); + udp_input(p, inp); + break; +#endif /* LWIP_UDP */ +#if LWIP_TCP + case IP_PROTO_TCP: + MIB2_STATS_INC(mib2.ipindelivers); + tcp_input(p, inp); + break; +#endif /* LWIP_TCP */ +#if LWIP_ICMP + case IP_PROTO_ICMP: + MIB2_STATS_INC(mib2.ipindelivers); + icmp_input(p, inp); + break; +#endif /* LWIP_ICMP */ +#if LWIP_IGMP + case IP_PROTO_IGMP: + igmp_input(p, inp, ip4_current_dest_addr()); + break; +#endif /* LWIP_IGMP */ + default: +#if LWIP_RAW + if (raw_status == RAW_INPUT_DELIVERED) { + MIB2_STATS_INC(mib2.ipindelivers); + } else +#endif /* LWIP_RAW */ + { +#if LWIP_ICMP + /* send ICMP destination protocol unreachable unless is was a broadcast */ + if (!ip4_addr_isbroadcast(ip4_current_dest_addr(), netif) && + !ip4_addr_ismulticast(ip4_current_dest_addr())) { + pbuf_header_force(p, (s16_t)iphdr_hlen); /* Move to ip header, no check necessary. */ + icmp_dest_unreach(p, ICMP_DUR_PROTO); + } +#endif /* LWIP_ICMP */ + + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("Unsupported transport protocol %"U16_F"\n", (u16_t)IPH_PROTO(iphdr))); + + IP_STATS_INC(ip.proterr); + IP_STATS_INC(ip.drop); + MIB2_STATS_INC(mib2.ipinunknownprotos); + } + pbuf_free(p); + break; + } + } + + /* @todo: this is not really necessary... */ + ip_data.current_netif = NULL; + ip_data.current_input_netif = NULL; + ip_data.current_ip4_header = NULL; + ip_data.current_ip_header_tot_len = 0; + ip4_addr_set_any(ip4_current_src_addr()); + ip4_addr_set_any(ip4_current_dest_addr()); + + return ERR_OK; +} + +/** + * Sends an IP packet on a network interface. This function constructs + * the IP header and calculates the IP header checksum. If the source + * IP address is NULL, the IP address of the outgoing network + * interface is filled in as source address. + * If the destination IP address is LWIP_IP_HDRINCL, p is assumed to already + * include an IP header and p->payload points to it instead of the data. + * + * @param p the packet to send (p->payload points to the data, e.g. next + protocol header; if dest == LWIP_IP_HDRINCL, p already includes an + IP header and p->payload points to that IP header) + * @param src the source IP address to send from (if src == IP4_ADDR_ANY, the + * IP address of the netif used to send is used as source address) + * @param dest the destination IP address to send the packet to + * @param ttl the TTL value to be set in the IP header + * @param tos the TOS value to be set in the IP header + * @param proto the PROTOCOL to be set in the IP header + * @param netif the netif on which to send this packet + * @return ERR_OK if the packet was sent OK + * ERR_BUF if p doesn't have enough space for IP/LINK headers + * returns errors returned by netif->output + * + * @note ip_id: RFC791 "some host may be able to simply use + * unique identifiers independent of destination" + */ +err_t +ip4_output_if(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, + u8_t proto, struct netif *netif) +{ +#if IP_OPTIONS_SEND + return ip4_output_if_opt(p, src, dest, ttl, tos, proto, netif, NULL, 0); +} + +/** + * Same as ip_output_if() but with the possibility to include IP options: + * + * @ param ip_options pointer to the IP options, copied into the IP header + * @ param optlen length of ip_options + */ +err_t +ip4_output_if_opt(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto, struct netif *netif, void *ip_options, + u16_t optlen) +{ +#endif /* IP_OPTIONS_SEND */ + const ip4_addr_t *src_used = src; + if (dest != LWIP_IP_HDRINCL) { + if (ip4_addr_isany(src)) { + src_used = netif_ip4_addr(netif); + } + } + +#if IP_OPTIONS_SEND + return ip4_output_if_opt_src(p, src_used, dest, ttl, tos, proto, netif, + ip_options, optlen); +#else /* IP_OPTIONS_SEND */ + return ip4_output_if_src(p, src_used, dest, ttl, tos, proto, netif); +#endif /* IP_OPTIONS_SEND */ +} + +/** + * Same as ip_output_if() but 'src' address is not replaced by netif address + * when it is 'any'. + */ +err_t +ip4_output_if_src(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, + u8_t proto, struct netif *netif) +{ +#if IP_OPTIONS_SEND + return ip4_output_if_opt_src(p, src, dest, ttl, tos, proto, netif, NULL, 0); +} + +/** + * Same as ip_output_if_opt() but 'src' address is not replaced by netif address + * when it is 'any'. + */ +err_t +ip4_output_if_opt_src(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto, struct netif *netif, void *ip_options, + u16_t optlen) +{ +#endif /* IP_OPTIONS_SEND */ + struct ip_hdr *iphdr; + ip4_addr_t dest_addr; +#if CHECKSUM_GEN_IP_INLINE + u32_t chk_sum = 0; +#endif /* CHECKSUM_GEN_IP_INLINE */ + + LWIP_ASSERT_CORE_LOCKED(); + LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p); + + MIB2_STATS_INC(mib2.ipoutrequests); + + /* Should the IP header be generated or is it already included in p? */ + if (dest != LWIP_IP_HDRINCL) { + u16_t ip_hlen = IP_HLEN; +#if IP_OPTIONS_SEND + u16_t optlen_aligned = 0; + if (optlen != 0) { +#if CHECKSUM_GEN_IP_INLINE + int i; +#endif /* CHECKSUM_GEN_IP_INLINE */ + if (optlen > (IP_HLEN_MAX - IP_HLEN)) { + /* optlen too long */ + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip4_output_if_opt: optlen too long\n")); + IP_STATS_INC(ip.err); + MIB2_STATS_INC(mib2.ipoutdiscards); + return ERR_VAL; + } + /* round up to a multiple of 4 */ + optlen_aligned = (u16_t)((optlen + 3) & ~3); + ip_hlen = (u16_t)(ip_hlen + optlen_aligned); + /* First write in the IP options */ + if (pbuf_add_header(p, optlen_aligned)) { + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip4_output_if_opt: not enough room for IP options in pbuf\n")); + IP_STATS_INC(ip.err); + MIB2_STATS_INC(mib2.ipoutdiscards); + return ERR_BUF; + } + MEMCPY(p->payload, ip_options, optlen); + if (optlen < optlen_aligned) { + /* zero the remaining bytes */ + memset(((char *)p->payload) + optlen, 0, (size_t)(optlen_aligned - optlen)); + } +#if CHECKSUM_GEN_IP_INLINE + for (i = 0; i < optlen_aligned / 2; i++) { + chk_sum += ((u16_t *)p->payload)[i]; + } +#endif /* CHECKSUM_GEN_IP_INLINE */ + } +#endif /* IP_OPTIONS_SEND */ + /* generate IP header */ + if (pbuf_add_header(p, IP_HLEN)) { + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip4_output: not enough room for IP header in pbuf\n")); + + IP_STATS_INC(ip.err); + MIB2_STATS_INC(mib2.ipoutdiscards); + return ERR_BUF; + } + + iphdr = (struct ip_hdr *)p->payload; + LWIP_ASSERT("check that first pbuf can hold struct ip_hdr", + (p->len >= sizeof(struct ip_hdr))); + + IPH_TTL_SET(iphdr, ttl); + IPH_PROTO_SET(iphdr, proto); +#if CHECKSUM_GEN_IP_INLINE + chk_sum += PP_NTOHS(proto | (ttl << 8)); +#endif /* CHECKSUM_GEN_IP_INLINE */ + + /* dest cannot be NULL here */ + ip4_addr_copy(iphdr->dest, *dest); +#if CHECKSUM_GEN_IP_INLINE + chk_sum += ip4_addr_get_u32(&iphdr->dest) & 0xFFFF; + chk_sum += ip4_addr_get_u32(&iphdr->dest) >> 16; +#endif /* CHECKSUM_GEN_IP_INLINE */ + + IPH_VHL_SET(iphdr, 4, ip_hlen / 4); + IPH_TOS_SET(iphdr, tos); +#if CHECKSUM_GEN_IP_INLINE + chk_sum += PP_NTOHS(tos | (iphdr->_v_hl << 8)); +#endif /* CHECKSUM_GEN_IP_INLINE */ + IPH_LEN_SET(iphdr, lwip_htons(p->tot_len)); +#if CHECKSUM_GEN_IP_INLINE + chk_sum += iphdr->_len; +#endif /* CHECKSUM_GEN_IP_INLINE */ + IPH_OFFSET_SET(iphdr, 0); + IPH_ID_SET(iphdr, lwip_htons(ip_id)); +#if CHECKSUM_GEN_IP_INLINE + chk_sum += iphdr->_id; +#endif /* CHECKSUM_GEN_IP_INLINE */ + ++ip_id; + + if (src == NULL) { + ip4_addr_copy(iphdr->src, *IP4_ADDR_ANY4); + } else { + /* src cannot be NULL here */ + ip4_addr_copy(iphdr->src, *src); + } + +#if CHECKSUM_GEN_IP_INLINE + chk_sum += ip4_addr_get_u32(&iphdr->src) & 0xFFFF; + chk_sum += ip4_addr_get_u32(&iphdr->src) >> 16; + chk_sum = (chk_sum >> 16) + (chk_sum & 0xFFFF); + chk_sum = (chk_sum >> 16) + chk_sum; + chk_sum = ~chk_sum; + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_IP) { + iphdr->_chksum = (u16_t)chk_sum; /* network order */ + } +#if LWIP_CHECKSUM_CTRL_PER_NETIF + else { + IPH_CHKSUM_SET(iphdr, 0); + } +#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF*/ +#else /* CHECKSUM_GEN_IP_INLINE */ + IPH_CHKSUM_SET(iphdr, 0); +#if CHECKSUM_GEN_IP + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_IP) { + IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, ip_hlen)); + } +#endif /* CHECKSUM_GEN_IP */ +#endif /* CHECKSUM_GEN_IP_INLINE */ + } else { + /* IP header already included in p */ + if (p->len < IP_HLEN) { + LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip4_output: LWIP_IP_HDRINCL but pbuf is too short\n")); + IP_STATS_INC(ip.err); + MIB2_STATS_INC(mib2.ipoutdiscards); + return ERR_BUF; + } + iphdr = (struct ip_hdr *)p->payload; + ip4_addr_copy(dest_addr, iphdr->dest); + dest = &dest_addr; + } + + IP_STATS_INC(ip.xmit); + + LWIP_DEBUGF(IP_DEBUG, ("ip4_output_if: %c%c%"U16_F"\n", netif->name[0], netif->name[1], (u16_t)netif->num)); + ip4_debug_print(p); + +#if ENABLE_LOOPBACK + if (ip4_addr_cmp(dest, netif_ip4_addr(netif)) +#if !LWIP_HAVE_LOOPIF + || ip4_addr_isloopback(dest) +#endif /* !LWIP_HAVE_LOOPIF */ + ) { + /* Packet to self, enqueue it for loopback */ + LWIP_DEBUGF(IP_DEBUG, ("netif_loop_output()")); + return netif_loop_output(netif, p); + } +#if LWIP_MULTICAST_TX_OPTIONS + if ((p->flags & PBUF_FLAG_MCASTLOOP) != 0) { + netif_loop_output(netif, p); + } +#endif /* LWIP_MULTICAST_TX_OPTIONS */ +#endif /* ENABLE_LOOPBACK */ +#if IP_FRAG + /* don't fragment if interface has mtu set to 0 [loopif] */ + if (netif->mtu && (p->tot_len > netif->mtu)) { + return ip4_frag(p, netif, dest); + } +#endif /* IP_FRAG */ + + LWIP_DEBUGF(IP_DEBUG, ("ip4_output_if: call netif->output()\n")); + return netif->output(netif, p, dest); +} + +/** + * Simple interface to ip_output_if. It finds the outgoing network + * interface and calls upon ip_output_if to do the actual work. + * + * @param p the packet to send (p->payload points to the data, e.g. next + protocol header; if dest == LWIP_IP_HDRINCL, p already includes an + IP header and p->payload points to that IP header) + * @param src the source IP address to send from (if src == IP4_ADDR_ANY, the + * IP address of the netif used to send is used as source address) + * @param dest the destination IP address to send the packet to + * @param ttl the TTL value to be set in the IP header + * @param tos the TOS value to be set in the IP header + * @param proto the PROTOCOL to be set in the IP header + * + * @return ERR_RTE if no route is found + * see ip_output_if() for more return values + */ +err_t +ip4_output(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto) +{ + struct netif *netif; + + LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p); + + if ((netif = ip4_route_src(src, dest)) == NULL) { + LWIP_DEBUGF(IP_DEBUG, ("ip4_output: No route to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + ip4_addr1_16(dest), ip4_addr2_16(dest), ip4_addr3_16(dest), ip4_addr4_16(dest))); + IP_STATS_INC(ip.rterr); + return ERR_RTE; + } + + return ip4_output_if(p, src, dest, ttl, tos, proto, netif); +} + +#if LWIP_NETIF_USE_HINTS +/** Like ip_output, but takes and addr_hint pointer that is passed on to netif->addr_hint + * before calling ip_output_if. + * + * @param p the packet to send (p->payload points to the data, e.g. next + protocol header; if dest == LWIP_IP_HDRINCL, p already includes an + IP header and p->payload points to that IP header) + * @param src the source IP address to send from (if src == IP4_ADDR_ANY, the + * IP address of the netif used to send is used as source address) + * @param dest the destination IP address to send the packet to + * @param ttl the TTL value to be set in the IP header + * @param tos the TOS value to be set in the IP header + * @param proto the PROTOCOL to be set in the IP header + * @param netif_hint netif output hint pointer set to netif->hint before + * calling ip_output_if() + * + * @return ERR_RTE if no route is found + * see ip_output_if() for more return values + */ +err_t +ip4_output_hinted(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto, struct netif_hint *netif_hint) +{ + struct netif *netif; + err_t err; + + LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p); + + if ((netif = ip4_route_src(src, dest)) == NULL) { + LWIP_DEBUGF(IP_DEBUG, ("ip4_output: No route to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + ip4_addr1_16(dest), ip4_addr2_16(dest), ip4_addr3_16(dest), ip4_addr4_16(dest))); + IP_STATS_INC(ip.rterr); + return ERR_RTE; + } + + NETIF_SET_HINTS(netif, netif_hint); + err = ip4_output_if(p, src, dest, ttl, tos, proto, netif); + NETIF_RESET_HINTS(netif); + + return err; +} +#endif /* LWIP_NETIF_USE_HINTS*/ + +#if IP_DEBUG +/* Print an IP header by using LWIP_DEBUGF + * @param p an IP packet, p->payload pointing to the IP header + */ +void +ip4_debug_print(struct pbuf *p) +{ + struct ip_hdr *iphdr = (struct ip_hdr *)p->payload; + + LWIP_DEBUGF(IP_DEBUG, ("IP header:\n")); + LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(IP_DEBUG, ("|%2"S16_F" |%2"S16_F" | 0x%02"X16_F" | %5"U16_F" | (v, hl, tos, len)\n", + (u16_t)IPH_V(iphdr), + (u16_t)IPH_HL(iphdr), + (u16_t)IPH_TOS(iphdr), + lwip_ntohs(IPH_LEN(iphdr)))); + LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(IP_DEBUG, ("| %5"U16_F" |%"U16_F"%"U16_F"%"U16_F"| %4"U16_F" | (id, flags, offset)\n", + lwip_ntohs(IPH_ID(iphdr)), + (u16_t)(lwip_ntohs(IPH_OFFSET(iphdr)) >> 15 & 1), + (u16_t)(lwip_ntohs(IPH_OFFSET(iphdr)) >> 14 & 1), + (u16_t)(lwip_ntohs(IPH_OFFSET(iphdr)) >> 13 & 1), + (u16_t)(lwip_ntohs(IPH_OFFSET(iphdr)) & IP_OFFMASK))); + LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(IP_DEBUG, ("| %3"U16_F" | %3"U16_F" | 0x%04"X16_F" | (ttl, proto, chksum)\n", + (u16_t)IPH_TTL(iphdr), + (u16_t)IPH_PROTO(iphdr), + lwip_ntohs(IPH_CHKSUM(iphdr)))); + LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(IP_DEBUG, ("| %3"U16_F" | %3"U16_F" | %3"U16_F" | %3"U16_F" | (src)\n", + ip4_addr1_16_val(iphdr->src), + ip4_addr2_16_val(iphdr->src), + ip4_addr3_16_val(iphdr->src), + ip4_addr4_16_val(iphdr->src))); + LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(IP_DEBUG, ("| %3"U16_F" | %3"U16_F" | %3"U16_F" | %3"U16_F" | (dest)\n", + ip4_addr1_16_val(iphdr->dest), + ip4_addr2_16_val(iphdr->dest), + ip4_addr3_16_val(iphdr->dest), + ip4_addr4_16_val(iphdr->dest))); + LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); +} +#endif /* IP_DEBUG */ + +#endif /* LWIP_IPV4 */ diff --git a/Other/tun2socks/core/c/core/ipv4/ip4_addr.c b/Other/tun2socks/core/c/core/ipv4/ip4_addr.c new file mode 100644 index 0000000..33204d1 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv4/ip4_addr.c @@ -0,0 +1,321 @@ +/** + * @file + * This is the IPv4 address tools implementation. + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV4 + +#include "lwip/ip_addr.h" +#include "lwip/netif.h" + +/* used by IP4_ADDR_ANY and IP_ADDR_BROADCAST in ip_addr.h */ +const ip_addr_t ip_addr_any = IPADDR4_INIT(IPADDR_ANY); +const ip_addr_t ip_addr_broadcast = IPADDR4_INIT(IPADDR_BROADCAST); + +/** + * Determine if an address is a broadcast address on a network interface + * + * @param addr address to be checked + * @param netif the network interface against which the address is checked + * @return returns non-zero if the address is a broadcast address + */ +u8_t +ip4_addr_isbroadcast_u32(u32_t addr, const struct netif *netif) +{ + ip4_addr_t ipaddr; + ip4_addr_set_u32(&ipaddr, addr); + + /* all ones (broadcast) or all zeroes (old skool broadcast) */ + if ((~addr == IPADDR_ANY) || + (addr == IPADDR_ANY)) { + return 1; + /* no broadcast support on this network interface? */ + } else if ((netif->flags & NETIF_FLAG_BROADCAST) == 0) { + /* the given address cannot be a broadcast address + * nor can we check against any broadcast addresses */ + return 0; + /* address matches network interface address exactly? => no broadcast */ + } else if (addr == ip4_addr_get_u32(netif_ip4_addr(netif))) { + return 0; + /* on the same (sub) network... */ + } else if (ip4_addr_netcmp(&ipaddr, netif_ip4_addr(netif), netif_ip4_netmask(netif)) + /* ...and host identifier bits are all ones? =>... */ + && ((addr & ~ip4_addr_get_u32(netif_ip4_netmask(netif))) == + (IPADDR_BROADCAST & ~ip4_addr_get_u32(netif_ip4_netmask(netif))))) { + /* => network broadcast address */ + return 1; + } else { + return 0; + } +} + +/** Checks if a netmask is valid (starting with ones, then only zeros) + * + * @param netmask the IPv4 netmask to check (in network byte order!) + * @return 1 if the netmask is valid, 0 if it is not + */ +u8_t +ip4_addr_netmask_valid(u32_t netmask) +{ + u32_t mask; + u32_t nm_hostorder = lwip_htonl(netmask); + + /* first, check for the first zero */ + for (mask = 1UL << 31 ; mask != 0; mask >>= 1) { + if ((nm_hostorder & mask) == 0) { + break; + } + } + /* then check that there is no one */ + for (; mask != 0; mask >>= 1) { + if ((nm_hostorder & mask) != 0) { + /* there is a one after the first zero -> invalid */ + return 0; + } + } + /* no one after the first zero -> valid */ + return 1; +} + +/** + * Ascii internet address interpretation routine. + * The value returned is in network order. + * + * @param cp IP address in ascii representation (e.g. "127.0.0.1") + * @return ip address in network order + */ +u32_t +ipaddr_addr(const char *cp) +{ + ip4_addr_t val; + + if (ip4addr_aton(cp, &val)) { + return ip4_addr_get_u32(&val); + } + return (IPADDR_NONE); +} + +/** + * Check whether "cp" is a valid ascii representation + * of an Internet address and convert to a binary address. + * Returns 1 if the address is valid, 0 if not. + * This replaces inet_addr, the return value from which + * cannot distinguish between failure and a local broadcast address. + * + * @param cp IP address in ascii representation (e.g. "127.0.0.1") + * @param addr pointer to which to save the ip address in network order + * @return 1 if cp could be converted to addr, 0 on failure + */ +int +ip4addr_aton(const char *cp, ip4_addr_t *addr) +{ + u32_t val; + u8_t base; + char c; + u32_t parts[4]; + u32_t *pp = parts; + + c = *cp; + for (;;) { + /* + * Collect number up to ``.''. + * Values are specified as for C: + * 0x=hex, 0=octal, 1-9=decimal. + */ + if (!lwip_isdigit(c)) { + return 0; + } + val = 0; + base = 10; + if (c == '0') { + c = *++cp; + if (c == 'x' || c == 'X') { + base = 16; + c = *++cp; + } else { + base = 8; + } + } + for (;;) { + if (lwip_isdigit(c)) { + val = (val * base) + (u32_t)(c - '0'); + c = *++cp; + } else if (base == 16 && lwip_isxdigit(c)) { + val = (val << 4) | (u32_t)(c + 10 - (lwip_islower(c) ? 'a' : 'A')); + c = *++cp; + } else { + break; + } + } + if (c == '.') { + /* + * Internet format: + * a.b.c.d + * a.b.c (with c treated as 16 bits) + * a.b (with b treated as 24 bits) + */ + if (pp >= parts + 3) { + return 0; + } + *pp++ = val; + c = *++cp; + } else { + break; + } + } + /* + * Check for trailing characters. + */ + if (c != '\0' && !lwip_isspace(c)) { + return 0; + } + /* + * Concoct the address according to + * the number of parts specified. + */ + switch (pp - parts + 1) { + + case 0: + return 0; /* initial nondigit */ + + case 1: /* a -- 32 bits */ + break; + + case 2: /* a.b -- 8.24 bits */ + if (val > 0xffffffUL) { + return 0; + } + if (parts[0] > 0xff) { + return 0; + } + val |= parts[0] << 24; + break; + + case 3: /* a.b.c -- 8.8.16 bits */ + if (val > 0xffff) { + return 0; + } + if ((parts[0] > 0xff) || (parts[1] > 0xff)) { + return 0; + } + val |= (parts[0] << 24) | (parts[1] << 16); + break; + + case 4: /* a.b.c.d -- 8.8.8.8 bits */ + if (val > 0xff) { + return 0; + } + if ((parts[0] > 0xff) || (parts[1] > 0xff) || (parts[2] > 0xff)) { + return 0; + } + val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8); + break; + default: + LWIP_ASSERT("unhandled", 0); + break; + } + if (addr) { + ip4_addr_set_u32(addr, lwip_htonl(val)); + } + return 1; +} + +/** + * Convert numeric IP address into decimal dotted ASCII representation. + * returns ptr to static buffer; not reentrant! + * + * @param addr ip address in network order to convert + * @return pointer to a global static (!) buffer that holds the ASCII + * representation of addr + */ +char * +ip4addr_ntoa(const ip4_addr_t *addr) +{ + static char str[IP4ADDR_STRLEN_MAX]; + return ip4addr_ntoa_r(addr, str, IP4ADDR_STRLEN_MAX); +} + +/** + * Same as ip4addr_ntoa, but reentrant since a user-supplied buffer is used. + * + * @param addr ip address in network order to convert + * @param buf target buffer where the string is stored + * @param buflen length of buf + * @return either pointer to buf which now holds the ASCII + * representation of addr or NULL if buf was too small + */ +char * +ip4addr_ntoa_r(const ip4_addr_t *addr, char *buf, int buflen) +{ + u32_t s_addr; + char inv[3]; + char *rp; + u8_t *ap; + u8_t rem; + u8_t n; + u8_t i; + int len = 0; + + s_addr = ip4_addr_get_u32(addr); + + rp = buf; + ap = (u8_t *)&s_addr; + for (n = 0; n < 4; n++) { + i = 0; + do { + rem = *ap % (u8_t)10; + *ap /= (u8_t)10; + inv[i++] = (char)('0' + rem); + } while (*ap); + while (i--) { + if (len++ >= buflen) { + return NULL; + } + *rp++ = inv[i]; + } + if (len++ >= buflen) { + return NULL; + } + *rp++ = '.'; + ap++; + } + *--rp = 0; + return buf; +} + +#endif /* LWIP_IPV4 */ diff --git a/Other/tun2socks/core/c/core/ipv4/ip4_frag.c b/Other/tun2socks/core/c/core/ipv4/ip4_frag.c new file mode 100644 index 0000000..a445530 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv4/ip4_frag.c @@ -0,0 +1,894 @@ +/** + * @file + * This is the IPv4 packet segmentation and reassembly implementation. + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Jani Monoses + * Simon Goldschmidt + * original reassembly code by Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV4 + +#include "lwip/ip4_frag.h" +#include "lwip/def.h" +#include "lwip/inet_chksum.h" +#include "lwip/netif.h" +#include "lwip/stats.h" +#include "lwip/icmp.h" + +#include + +#if IP_REASSEMBLY +/** + * The IP reassembly code currently has the following limitations: + * - IP header options are not supported + * - fragments must not overlap (e.g. due to different routes), + * currently, overlapping or duplicate fragments are thrown away + * if IP_REASS_CHECK_OVERLAP=1 (the default)! + * + * @todo: work with IP header options + */ + +/** Setting this to 0, you can turn off checking the fragments for overlapping + * regions. The code gets a little smaller. Only use this if you know that + * overlapping won't occur on your network! */ +#ifndef IP_REASS_CHECK_OVERLAP +#define IP_REASS_CHECK_OVERLAP 1 +#endif /* IP_REASS_CHECK_OVERLAP */ + +/** Set to 0 to prevent freeing the oldest datagram when the reassembly buffer is + * full (IP_REASS_MAX_PBUFS pbufs are enqueued). The code gets a little smaller. + * Datagrams will be freed by timeout only. Especially useful when MEMP_NUM_REASSDATA + * is set to 1, so one datagram can be reassembled at a time, only. */ +#ifndef IP_REASS_FREE_OLDEST +#define IP_REASS_FREE_OLDEST 1 +#endif /* IP_REASS_FREE_OLDEST */ + +#define IP_REASS_FLAG_LASTFRAG 0x01 + +#define IP_REASS_VALIDATE_TELEGRAM_FINISHED 1 +#define IP_REASS_VALIDATE_PBUF_QUEUED 0 +#define IP_REASS_VALIDATE_PBUF_DROPPED -1 + +/** This is a helper struct which holds the starting + * offset and the ending offset of this fragment to + * easily chain the fragments. + * It has the same packing requirements as the IP header, since it replaces + * the IP header in memory in incoming fragments (after copying it) to keep + * track of the various fragments. (-> If the IP header doesn't need packing, + * this struct doesn't need packing, too.) + */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip_reass_helper { + PACK_STRUCT_FIELD(struct pbuf *next_pbuf); + PACK_STRUCT_FIELD(u16_t start); + PACK_STRUCT_FIELD(u16_t end); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#define IP_ADDRESSES_AND_ID_MATCH(iphdrA, iphdrB) \ + (ip4_addr_cmp(&(iphdrA)->src, &(iphdrB)->src) && \ + ip4_addr_cmp(&(iphdrA)->dest, &(iphdrB)->dest) && \ + IPH_ID(iphdrA) == IPH_ID(iphdrB)) ? 1 : 0 + +/* global variables */ +static struct ip_reassdata *reassdatagrams; +static u16_t ip_reass_pbufcount; + +/* function prototypes */ +static void ip_reass_dequeue_datagram(struct ip_reassdata *ipr, struct ip_reassdata *prev); +static int ip_reass_free_complete_datagram(struct ip_reassdata *ipr, struct ip_reassdata *prev); + +/** + * Reassembly timer base function + * for both NO_SYS == 0 and 1 (!). + * + * Should be called every 1000 msec (defined by IP_TMR_INTERVAL). + */ +void +ip_reass_tmr(void) +{ + struct ip_reassdata *r, *prev = NULL; + + r = reassdatagrams; + while (r != NULL) { + /* Decrement the timer. Once it reaches 0, + * clean up the incomplete fragment assembly */ + if (r->timer > 0) { + r->timer--; + LWIP_DEBUGF(IP_REASS_DEBUG, ("ip_reass_tmr: timer dec %"U16_F"\n", (u16_t)r->timer)); + prev = r; + r = r->next; + } else { + /* reassembly timed out */ + struct ip_reassdata *tmp; + LWIP_DEBUGF(IP_REASS_DEBUG, ("ip_reass_tmr: timer timed out\n")); + tmp = r; + /* get the next pointer before freeing */ + r = r->next; + /* free the helper struct and all enqueued pbufs */ + ip_reass_free_complete_datagram(tmp, prev); + } + } +} + +/** + * Free a datagram (struct ip_reassdata) and all its pbufs. + * Updates the total count of enqueued pbufs (ip_reass_pbufcount), + * SNMP counters and sends an ICMP time exceeded packet. + * + * @param ipr datagram to free + * @param prev the previous datagram in the linked list + * @return the number of pbufs freed + */ +static int +ip_reass_free_complete_datagram(struct ip_reassdata *ipr, struct ip_reassdata *prev) +{ + u16_t pbufs_freed = 0; + u16_t clen; + struct pbuf *p; + struct ip_reass_helper *iprh; + + LWIP_ASSERT("prev != ipr", prev != ipr); + if (prev != NULL) { + LWIP_ASSERT("prev->next == ipr", prev->next == ipr); + } + + MIB2_STATS_INC(mib2.ipreasmfails); +#if LWIP_ICMP + iprh = (struct ip_reass_helper *)ipr->p->payload; + if (iprh->start == 0) { + /* The first fragment was received, send ICMP time exceeded. */ + /* First, de-queue the first pbuf from r->p. */ + p = ipr->p; + ipr->p = iprh->next_pbuf; + /* Then, copy the original header into it. */ + SMEMCPY(p->payload, &ipr->iphdr, IP_HLEN); + icmp_time_exceeded(p, ICMP_TE_FRAG); + clen = pbuf_clen(p); + LWIP_ASSERT("pbufs_freed + clen <= 0xffff", pbufs_freed + clen <= 0xffff); + pbufs_freed = (u16_t)(pbufs_freed + clen); + pbuf_free(p); + } +#endif /* LWIP_ICMP */ + + /* First, free all received pbufs. The individual pbufs need to be released + separately as they have not yet been chained */ + p = ipr->p; + while (p != NULL) { + struct pbuf *pcur; + iprh = (struct ip_reass_helper *)p->payload; + pcur = p; + /* get the next pointer before freeing */ + p = iprh->next_pbuf; + clen = pbuf_clen(pcur); + LWIP_ASSERT("pbufs_freed + clen <= 0xffff", pbufs_freed + clen <= 0xffff); + pbufs_freed = (u16_t)(pbufs_freed + clen); + pbuf_free(pcur); + } + /* Then, unchain the struct ip_reassdata from the list and free it. */ + ip_reass_dequeue_datagram(ipr, prev); + LWIP_ASSERT("ip_reass_pbufcount >= pbufs_freed", ip_reass_pbufcount >= pbufs_freed); + ip_reass_pbufcount = (u16_t)(ip_reass_pbufcount - pbufs_freed); + + return pbufs_freed; +} + +#if IP_REASS_FREE_OLDEST +/** + * Free the oldest datagram to make room for enqueueing new fragments. + * The datagram 'fraghdr' belongs to is not freed! + * + * @param fraghdr IP header of the current fragment + * @param pbufs_needed number of pbufs needed to enqueue + * (used for freeing other datagrams if not enough space) + * @return the number of pbufs freed + */ +static int +ip_reass_remove_oldest_datagram(struct ip_hdr *fraghdr, int pbufs_needed) +{ + /* @todo Can't we simply remove the last datagram in the + * linked list behind reassdatagrams? + */ + struct ip_reassdata *r, *oldest, *prev, *oldest_prev; + int pbufs_freed = 0, pbufs_freed_current; + int other_datagrams; + + /* Free datagrams until being allowed to enqueue 'pbufs_needed' pbufs, + * but don't free the datagram that 'fraghdr' belongs to! */ + do { + oldest = NULL; + prev = NULL; + oldest_prev = NULL; + other_datagrams = 0; + r = reassdatagrams; + while (r != NULL) { + if (!IP_ADDRESSES_AND_ID_MATCH(&r->iphdr, fraghdr)) { + /* Not the same datagram as fraghdr */ + other_datagrams++; + if (oldest == NULL) { + oldest = r; + oldest_prev = prev; + } else if (r->timer <= oldest->timer) { + /* older than the previous oldest */ + oldest = r; + oldest_prev = prev; + } + } + if (r->next != NULL) { + prev = r; + } + r = r->next; + } + if (oldest != NULL) { + pbufs_freed_current = ip_reass_free_complete_datagram(oldest, oldest_prev); + pbufs_freed += pbufs_freed_current; + } + } while ((pbufs_freed < pbufs_needed) && (other_datagrams > 1)); + return pbufs_freed; +} +#endif /* IP_REASS_FREE_OLDEST */ + +/** + * Enqueues a new fragment into the fragment queue + * @param fraghdr points to the new fragments IP hdr + * @param clen number of pbufs needed to enqueue (used for freeing other datagrams if not enough space) + * @return A pointer to the queue location into which the fragment was enqueued + */ +static struct ip_reassdata * +ip_reass_enqueue_new_datagram(struct ip_hdr *fraghdr, int clen) +{ + struct ip_reassdata *ipr; +#if ! IP_REASS_FREE_OLDEST + LWIP_UNUSED_ARG(clen); +#endif + + /* No matching previous fragment found, allocate a new reassdata struct */ + ipr = (struct ip_reassdata *)memp_malloc(MEMP_REASSDATA); + if (ipr == NULL) { +#if IP_REASS_FREE_OLDEST + if (ip_reass_remove_oldest_datagram(fraghdr, clen) >= clen) { + ipr = (struct ip_reassdata *)memp_malloc(MEMP_REASSDATA); + } + if (ipr == NULL) +#endif /* IP_REASS_FREE_OLDEST */ + { + IPFRAG_STATS_INC(ip_frag.memerr); + LWIP_DEBUGF(IP_REASS_DEBUG, ("Failed to alloc reassdata struct\n")); + return NULL; + } + } + memset(ipr, 0, sizeof(struct ip_reassdata)); + ipr->timer = IP_REASS_MAXAGE; + + /* enqueue the new structure to the front of the list */ + ipr->next = reassdatagrams; + reassdatagrams = ipr; + /* copy the ip header for later tests and input */ + /* @todo: no ip options supported? */ + SMEMCPY(&(ipr->iphdr), fraghdr, IP_HLEN); + return ipr; +} + +/** + * Dequeues a datagram from the datagram queue. Doesn't deallocate the pbufs. + * @param ipr points to the queue entry to dequeue + */ +static void +ip_reass_dequeue_datagram(struct ip_reassdata *ipr, struct ip_reassdata *prev) +{ + /* dequeue the reass struct */ + if (reassdatagrams == ipr) { + /* it was the first in the list */ + reassdatagrams = ipr->next; + } else { + /* it wasn't the first, so it must have a valid 'prev' */ + LWIP_ASSERT("sanity check linked list", prev != NULL); + prev->next = ipr->next; + } + + /* now we can free the ip_reassdata struct */ + memp_free(MEMP_REASSDATA, ipr); +} + +/** + * Chain a new pbuf into the pbuf list that composes the datagram. The pbuf list + * will grow over time as new pbufs are rx. + * Also checks that the datagram passes basic continuity checks (if the last + * fragment was received at least once). + * @param ipr points to the reassembly state + * @param new_p points to the pbuf for the current fragment + * @param is_last is 1 if this pbuf has MF==0 (ipr->flags not updated yet) + * @return see IP_REASS_VALIDATE_* defines + */ +static int +ip_reass_chain_frag_into_datagram_and_validate(struct ip_reassdata *ipr, struct pbuf *new_p, int is_last) +{ + struct ip_reass_helper *iprh, *iprh_tmp, *iprh_prev = NULL; + struct pbuf *q; + u16_t offset, len; + u8_t hlen; + struct ip_hdr *fraghdr; + int valid = 1; + + /* Extract length and fragment offset from current fragment */ + fraghdr = (struct ip_hdr *)new_p->payload; + len = lwip_ntohs(IPH_LEN(fraghdr)); + hlen = IPH_HL_BYTES(fraghdr); + if (hlen > len) { + /* invalid datagram */ + return IP_REASS_VALIDATE_PBUF_DROPPED; + } + len = (u16_t)(len - hlen); + offset = IPH_OFFSET_BYTES(fraghdr); + + /* overwrite the fragment's ip header from the pbuf with our helper struct, + * and setup the embedded helper structure. */ + /* make sure the struct ip_reass_helper fits into the IP header */ + LWIP_ASSERT("sizeof(struct ip_reass_helper) <= IP_HLEN", + sizeof(struct ip_reass_helper) <= IP_HLEN); + iprh = (struct ip_reass_helper *)new_p->payload; + iprh->next_pbuf = NULL; + iprh->start = offset; + iprh->end = (u16_t)(offset + len); + if (iprh->end < offset) { + /* u16_t overflow, cannot handle this */ + return IP_REASS_VALIDATE_PBUF_DROPPED; + } + + /* Iterate through until we either get to the end of the list (append), + * or we find one with a larger offset (insert). */ + for (q = ipr->p; q != NULL;) { + iprh_tmp = (struct ip_reass_helper *)q->payload; + if (iprh->start < iprh_tmp->start) { + /* the new pbuf should be inserted before this */ + iprh->next_pbuf = q; + if (iprh_prev != NULL) { + /* not the fragment with the lowest offset */ +#if IP_REASS_CHECK_OVERLAP + if ((iprh->start < iprh_prev->end) || (iprh->end > iprh_tmp->start)) { + /* fragment overlaps with previous or following, throw away */ + return IP_REASS_VALIDATE_PBUF_DROPPED; + } +#endif /* IP_REASS_CHECK_OVERLAP */ + iprh_prev->next_pbuf = new_p; + if (iprh_prev->end != iprh->start) { + /* There is a fragment missing between the current + * and the previous fragment */ + valid = 0; + } + } else { +#if IP_REASS_CHECK_OVERLAP + if (iprh->end > iprh_tmp->start) { + /* fragment overlaps with following, throw away */ + return IP_REASS_VALIDATE_PBUF_DROPPED; + } +#endif /* IP_REASS_CHECK_OVERLAP */ + /* fragment with the lowest offset */ + ipr->p = new_p; + } + break; + } else if (iprh->start == iprh_tmp->start) { + /* received the same datagram twice: no need to keep the datagram */ + return IP_REASS_VALIDATE_PBUF_DROPPED; +#if IP_REASS_CHECK_OVERLAP + } else if (iprh->start < iprh_tmp->end) { + /* overlap: no need to keep the new datagram */ + return IP_REASS_VALIDATE_PBUF_DROPPED; +#endif /* IP_REASS_CHECK_OVERLAP */ + } else { + /* Check if the fragments received so far have no holes. */ + if (iprh_prev != NULL) { + if (iprh_prev->end != iprh_tmp->start) { + /* There is a fragment missing between the current + * and the previous fragment */ + valid = 0; + } + } + } + q = iprh_tmp->next_pbuf; + iprh_prev = iprh_tmp; + } + + /* If q is NULL, then we made it to the end of the list. Determine what to do now */ + if (q == NULL) { + if (iprh_prev != NULL) { + /* this is (for now), the fragment with the highest offset: + * chain it to the last fragment */ +#if IP_REASS_CHECK_OVERLAP + LWIP_ASSERT("check fragments don't overlap", iprh_prev->end <= iprh->start); +#endif /* IP_REASS_CHECK_OVERLAP */ + iprh_prev->next_pbuf = new_p; + if (iprh_prev->end != iprh->start) { + valid = 0; + } + } else { +#if IP_REASS_CHECK_OVERLAP + LWIP_ASSERT("no previous fragment, this must be the first fragment!", + ipr->p == NULL); +#endif /* IP_REASS_CHECK_OVERLAP */ + /* this is the first fragment we ever received for this ip datagram */ + ipr->p = new_p; + } + } + + /* At this point, the validation part begins: */ + /* If we already received the last fragment */ + if (is_last || ((ipr->flags & IP_REASS_FLAG_LASTFRAG) != 0)) { + /* and had no holes so far */ + if (valid) { + /* then check if the rest of the fragments is here */ + /* Check if the queue starts with the first datagram */ + if ((ipr->p == NULL) || (((struct ip_reass_helper *)ipr->p->payload)->start != 0)) { + valid = 0; + } else { + /* and check that there are no holes after this datagram */ + iprh_prev = iprh; + q = iprh->next_pbuf; + while (q != NULL) { + iprh = (struct ip_reass_helper *)q->payload; + if (iprh_prev->end != iprh->start) { + valid = 0; + break; + } + iprh_prev = iprh; + q = iprh->next_pbuf; + } + /* if still valid, all fragments are received + * (because to the MF==0 already arrived */ + if (valid) { + LWIP_ASSERT("sanity check", ipr->p != NULL); + LWIP_ASSERT("sanity check", + ((struct ip_reass_helper *)ipr->p->payload) != iprh); + LWIP_ASSERT("validate_datagram:next_pbuf!=NULL", + iprh->next_pbuf == NULL); + } + } + } + /* If valid is 0 here, there are some fragments missing in the middle + * (since MF == 0 has already arrived). Such datagrams simply time out if + * no more fragments are received... */ + return valid ? IP_REASS_VALIDATE_TELEGRAM_FINISHED : IP_REASS_VALIDATE_PBUF_QUEUED; + } + /* If we come here, not all fragments were received, yet! */ + return IP_REASS_VALIDATE_PBUF_QUEUED; /* not yet valid! */ +} + +/** + * Reassembles incoming IP fragments into an IP datagram. + * + * @param p points to a pbuf chain of the fragment + * @return NULL if reassembly is incomplete, ? otherwise + */ +struct pbuf * +ip4_reass(struct pbuf *p) +{ + struct pbuf *r; + struct ip_hdr *fraghdr; + struct ip_reassdata *ipr; + struct ip_reass_helper *iprh; + u16_t offset, len, clen; + u8_t hlen; + int valid; + int is_last; + + IPFRAG_STATS_INC(ip_frag.recv); + MIB2_STATS_INC(mib2.ipreasmreqds); + + fraghdr = (struct ip_hdr *)p->payload; + + if (IPH_HL_BYTES(fraghdr) != IP_HLEN) { + LWIP_DEBUGF(IP_REASS_DEBUG, ("ip4_reass: IP options currently not supported!\n")); + IPFRAG_STATS_INC(ip_frag.err); + goto nullreturn; + } + + offset = IPH_OFFSET_BYTES(fraghdr); + len = lwip_ntohs(IPH_LEN(fraghdr)); + hlen = IPH_HL_BYTES(fraghdr); + if (hlen > len) { + /* invalid datagram */ + goto nullreturn; + } + len = (u16_t)(len - hlen); + + /* Check if we are allowed to enqueue more datagrams. */ + clen = pbuf_clen(p); + if ((ip_reass_pbufcount + clen) > IP_REASS_MAX_PBUFS) { +#if IP_REASS_FREE_OLDEST + if (!ip_reass_remove_oldest_datagram(fraghdr, clen) || + ((ip_reass_pbufcount + clen) > IP_REASS_MAX_PBUFS)) +#endif /* IP_REASS_FREE_OLDEST */ + { + /* No datagram could be freed and still too many pbufs enqueued */ + LWIP_DEBUGF(IP_REASS_DEBUG, ("ip4_reass: Overflow condition: pbufct=%d, clen=%d, MAX=%d\n", + ip_reass_pbufcount, clen, IP_REASS_MAX_PBUFS)); + IPFRAG_STATS_INC(ip_frag.memerr); + /* @todo: send ICMP time exceeded here? */ + /* drop this pbuf */ + goto nullreturn; + } + } + + /* Look for the datagram the fragment belongs to in the current datagram queue, + * remembering the previous in the queue for later dequeueing. */ + for (ipr = reassdatagrams; ipr != NULL; ipr = ipr->next) { + /* Check if the incoming fragment matches the one currently present + in the reassembly buffer. If so, we proceed with copying the + fragment into the buffer. */ + if (IP_ADDRESSES_AND_ID_MATCH(&ipr->iphdr, fraghdr)) { + LWIP_DEBUGF(IP_REASS_DEBUG, ("ip4_reass: matching previous fragment ID=%"X16_F"\n", + lwip_ntohs(IPH_ID(fraghdr)))); + IPFRAG_STATS_INC(ip_frag.cachehit); + break; + } + } + + if (ipr == NULL) { + /* Enqueue a new datagram into the datagram queue */ + ipr = ip_reass_enqueue_new_datagram(fraghdr, clen); + /* Bail if unable to enqueue */ + if (ipr == NULL) { + goto nullreturn; + } + } else { + if (((lwip_ntohs(IPH_OFFSET(fraghdr)) & IP_OFFMASK) == 0) && + ((lwip_ntohs(IPH_OFFSET(&ipr->iphdr)) & IP_OFFMASK) != 0)) { + /* ipr->iphdr is not the header from the first fragment, but fraghdr is + * -> copy fraghdr into ipr->iphdr since we want to have the header + * of the first fragment (for ICMP time exceeded and later, for copying + * all options, if supported)*/ + SMEMCPY(&ipr->iphdr, fraghdr, IP_HLEN); + } + } + + /* At this point, we have either created a new entry or pointing + * to an existing one */ + + /* check for 'no more fragments', and update queue entry*/ + is_last = (IPH_OFFSET(fraghdr) & PP_NTOHS(IP_MF)) == 0; + if (is_last) { + u16_t datagram_len = (u16_t)(offset + len); + if ((datagram_len < offset) || (datagram_len > (0xFFFF - IP_HLEN))) { + /* u16_t overflow, cannot handle this */ + goto nullreturn_ipr; + } + } + /* find the right place to insert this pbuf */ + /* @todo: trim pbufs if fragments are overlapping */ + valid = ip_reass_chain_frag_into_datagram_and_validate(ipr, p, is_last); + if (valid == IP_REASS_VALIDATE_PBUF_DROPPED) { + goto nullreturn_ipr; + } + /* if we come here, the pbuf has been enqueued */ + + /* Track the current number of pbufs current 'in-flight', in order to limit + the number of fragments that may be enqueued at any one time + (overflow checked by testing against IP_REASS_MAX_PBUFS) */ + ip_reass_pbufcount = (u16_t)(ip_reass_pbufcount + clen); + if (is_last) { + u16_t datagram_len = (u16_t)(offset + len); + ipr->datagram_len = datagram_len; + ipr->flags |= IP_REASS_FLAG_LASTFRAG; + LWIP_DEBUGF(IP_REASS_DEBUG, + ("ip4_reass: last fragment seen, total len %"S16_F"\n", + ipr->datagram_len)); + } + + if (valid == IP_REASS_VALIDATE_TELEGRAM_FINISHED) { + struct ip_reassdata *ipr_prev; + /* the totally last fragment (flag more fragments = 0) was received at least + * once AND all fragments are received */ + u16_t datagram_len = (u16_t)(ipr->datagram_len + IP_HLEN); + + /* save the second pbuf before copying the header over the pointer */ + r = ((struct ip_reass_helper *)ipr->p->payload)->next_pbuf; + + /* copy the original ip header back to the first pbuf */ + fraghdr = (struct ip_hdr *)(ipr->p->payload); + SMEMCPY(fraghdr, &ipr->iphdr, IP_HLEN); + IPH_LEN_SET(fraghdr, lwip_htons(datagram_len)); + IPH_OFFSET_SET(fraghdr, 0); + IPH_CHKSUM_SET(fraghdr, 0); + /* @todo: do we need to set/calculate the correct checksum? */ +#if CHECKSUM_GEN_IP + IF__NETIF_CHECKSUM_ENABLED(ip_current_input_netif(), NETIF_CHECKSUM_GEN_IP) { + IPH_CHKSUM_SET(fraghdr, inet_chksum(fraghdr, IP_HLEN)); + } +#endif /* CHECKSUM_GEN_IP */ + + p = ipr->p; + + /* chain together the pbufs contained within the reass_data list. */ + while (r != NULL) { + iprh = (struct ip_reass_helper *)r->payload; + + /* hide the ip header for every succeeding fragment */ + pbuf_remove_header(r, IP_HLEN); + pbuf_cat(p, r); + r = iprh->next_pbuf; + } + + /* find the previous entry in the linked list */ + if (ipr == reassdatagrams) { + ipr_prev = NULL; + } else { + for (ipr_prev = reassdatagrams; ipr_prev != NULL; ipr_prev = ipr_prev->next) { + if (ipr_prev->next == ipr) { + break; + } + } + } + + /* release the sources allocate for the fragment queue entry */ + ip_reass_dequeue_datagram(ipr, ipr_prev); + + /* and adjust the number of pbufs currently queued for reassembly. */ + clen = pbuf_clen(p); + LWIP_ASSERT("ip_reass_pbufcount >= clen", ip_reass_pbufcount >= clen); + ip_reass_pbufcount = (u16_t)(ip_reass_pbufcount - clen); + + MIB2_STATS_INC(mib2.ipreasmoks); + + /* Return the pbuf chain */ + return p; + } + /* the datagram is not (yet?) reassembled completely */ + LWIP_DEBUGF(IP_REASS_DEBUG, ("ip_reass_pbufcount: %d out\n", ip_reass_pbufcount)); + return NULL; + +nullreturn_ipr: + LWIP_ASSERT("ipr != NULL", ipr != NULL); + if (ipr->p == NULL) { + /* dropped pbuf after creating a new datagram entry: remove the entry, too */ + LWIP_ASSERT("not firstalthough just enqueued", ipr == reassdatagrams); + ip_reass_dequeue_datagram(ipr, NULL); + } + +nullreturn: + LWIP_DEBUGF(IP_REASS_DEBUG, ("ip4_reass: nullreturn\n")); + IPFRAG_STATS_INC(ip_frag.drop); + pbuf_free(p); + return NULL; +} +#endif /* IP_REASSEMBLY */ + +#if IP_FRAG +#if !LWIP_NETIF_TX_SINGLE_PBUF +/** Allocate a new struct pbuf_custom_ref */ +static struct pbuf_custom_ref * +ip_frag_alloc_pbuf_custom_ref(void) +{ + return (struct pbuf_custom_ref *)memp_malloc(MEMP_FRAG_PBUF); +} + +/** Free a struct pbuf_custom_ref */ +static void +ip_frag_free_pbuf_custom_ref(struct pbuf_custom_ref *p) +{ + LWIP_ASSERT("p != NULL", p != NULL); + memp_free(MEMP_FRAG_PBUF, p); +} + +/** Free-callback function to free a 'struct pbuf_custom_ref', called by + * pbuf_free. */ +static void +ipfrag_free_pbuf_custom(struct pbuf *p) +{ + struct pbuf_custom_ref *pcr = (struct pbuf_custom_ref *)p; + LWIP_ASSERT("pcr != NULL", pcr != NULL); + LWIP_ASSERT("pcr == p", (void *)pcr == (void *)p); + if (pcr->original != NULL) { + pbuf_free(pcr->original); + } + ip_frag_free_pbuf_custom_ref(pcr); +} +#endif /* !LWIP_NETIF_TX_SINGLE_PBUF */ + +/** + * Fragment an IP datagram if too large for the netif. + * + * Chop the datagram in MTU sized chunks and send them in order + * by pointing PBUF_REFs into p. + * + * @param p ip packet to send + * @param netif the netif on which to send + * @param dest destination ip address to which to send + * + * @return ERR_OK if sent successfully, err_t otherwise + */ +err_t +ip4_frag(struct pbuf *p, struct netif *netif, const ip4_addr_t *dest) +{ + struct pbuf *rambuf; +#if !LWIP_NETIF_TX_SINGLE_PBUF + struct pbuf *newpbuf; + u16_t newpbuflen = 0; + u16_t left_to_copy; +#endif + struct ip_hdr *original_iphdr; + struct ip_hdr *iphdr; + const u16_t nfb = (u16_t)((netif->mtu - IP_HLEN) / 8); + u16_t left, fragsize; + u16_t ofo; + int last; + u16_t poff = IP_HLEN; + u16_t tmp; + int mf_set; + + original_iphdr = (struct ip_hdr *)p->payload; + iphdr = original_iphdr; + if (IPH_HL_BYTES(iphdr) != IP_HLEN) { + /* ip4_frag() does not support IP options */ + return ERR_VAL; + } + LWIP_ERROR("ip4_frag(): pbuf too short", p->len >= IP_HLEN, return ERR_VAL); + + /* Save original offset */ + tmp = lwip_ntohs(IPH_OFFSET(iphdr)); + ofo = tmp & IP_OFFMASK; + /* already fragmented? if so, the last fragment we create must have MF, too */ + mf_set = tmp & IP_MF; + + left = (u16_t)(p->tot_len - IP_HLEN); + + while (left) { + /* Fill this fragment */ + fragsize = LWIP_MIN(left, (u16_t)(nfb * 8)); + +#if LWIP_NETIF_TX_SINGLE_PBUF + rambuf = pbuf_alloc(PBUF_IP, fragsize, PBUF_RAM); + if (rambuf == NULL) { + goto memerr; + } + LWIP_ASSERT("this needs a pbuf in one piece!", + (rambuf->len == rambuf->tot_len) && (rambuf->next == NULL)); + poff += pbuf_copy_partial(p, rambuf->payload, fragsize, poff); + /* make room for the IP header */ + if (pbuf_add_header(rambuf, IP_HLEN)) { + pbuf_free(rambuf); + goto memerr; + } + /* fill in the IP header */ + SMEMCPY(rambuf->payload, original_iphdr, IP_HLEN); + iphdr = (struct ip_hdr *)rambuf->payload; +#else /* LWIP_NETIF_TX_SINGLE_PBUF */ + /* When not using a static buffer, create a chain of pbufs. + * The first will be a PBUF_RAM holding the link and IP header. + * The rest will be PBUF_REFs mirroring the pbuf chain to be fragged, + * but limited to the size of an mtu. + */ + rambuf = pbuf_alloc(PBUF_LINK, IP_HLEN, PBUF_RAM); + if (rambuf == NULL) { + goto memerr; + } + LWIP_ASSERT("this needs a pbuf in one piece!", + (rambuf->len >= (IP_HLEN))); + SMEMCPY(rambuf->payload, original_iphdr, IP_HLEN); + iphdr = (struct ip_hdr *)rambuf->payload; + + left_to_copy = fragsize; + while (left_to_copy) { + struct pbuf_custom_ref *pcr; + u16_t plen = (u16_t)(p->len - poff); + LWIP_ASSERT("p->len >= poff", p->len >= poff); + newpbuflen = LWIP_MIN(left_to_copy, plen); + /* Is this pbuf already empty? */ + if (!newpbuflen) { + poff = 0; + p = p->next; + continue; + } + pcr = ip_frag_alloc_pbuf_custom_ref(); + if (pcr == NULL) { + pbuf_free(rambuf); + goto memerr; + } + /* Mirror this pbuf, although we might not need all of it. */ + newpbuf = pbuf_alloced_custom(PBUF_RAW, newpbuflen, PBUF_REF, &pcr->pc, + (u8_t *)p->payload + poff, newpbuflen); + if (newpbuf == NULL) { + ip_frag_free_pbuf_custom_ref(pcr); + pbuf_free(rambuf); + goto memerr; + } + pbuf_ref(p); + pcr->original = p; + pcr->pc.custom_free_function = ipfrag_free_pbuf_custom; + + /* Add it to end of rambuf's chain, but using pbuf_cat, not pbuf_chain + * so that it is removed when pbuf_dechain is later called on rambuf. + */ + pbuf_cat(rambuf, newpbuf); + left_to_copy = (u16_t)(left_to_copy - newpbuflen); + if (left_to_copy) { + poff = 0; + p = p->next; + } + } + poff = (u16_t)(poff + newpbuflen); +#endif /* LWIP_NETIF_TX_SINGLE_PBUF */ + + /* Correct header */ + last = (left <= netif->mtu - IP_HLEN); + + /* Set new offset and MF flag */ + tmp = (IP_OFFMASK & (ofo)); + if (!last || mf_set) { + /* the last fragment has MF set if the input frame had it */ + tmp = tmp | IP_MF; + } + IPH_OFFSET_SET(iphdr, lwip_htons(tmp)); + IPH_LEN_SET(iphdr, lwip_htons((u16_t)(fragsize + IP_HLEN))); + IPH_CHKSUM_SET(iphdr, 0); +#if CHECKSUM_GEN_IP + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_IP) { + IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, IP_HLEN)); + } +#endif /* CHECKSUM_GEN_IP */ + + /* No need for separate header pbuf - we allowed room for it in rambuf + * when allocated. + */ + netif->output(netif, rambuf, dest); + IPFRAG_STATS_INC(ip_frag.xmit); + + /* Unfortunately we can't reuse rambuf - the hardware may still be + * using the buffer. Instead we free it (and the ensuing chain) and + * recreate it next time round the loop. If we're lucky the hardware + * will have already sent the packet, the free will really free, and + * there will be zero memory penalty. + */ + + pbuf_free(rambuf); + left = (u16_t)(left - fragsize); + ofo = (u16_t)(ofo + nfb); + } + MIB2_STATS_INC(mib2.ipfragoks); + return ERR_OK; +memerr: + MIB2_STATS_INC(mib2.ipfragfails); + return ERR_MEM; +} +#endif /* IP_FRAG */ + +#endif /* LWIP_IPV4 */ diff --git a/Other/tun2socks/core/c/core/ipv6/dhcp6.c b/Other/tun2socks/core/c/core/ipv6/dhcp6.c new file mode 100644 index 0000000..7cf98a5 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv6/dhcp6.c @@ -0,0 +1,812 @@ +/** + * @file + * + * @defgroup dhcp6 DHCPv6 + * @ingroup ip6 + * DHCPv6 client: IPv6 address autoconfiguration as per + * RFC 3315 (stateful DHCPv6) and + * RFC 3736 (stateless DHCPv6). + * + * For now, only stateless DHCPv6 is implemented! + * + * TODO: + * - enable/disable API to not always start when RA is received + * - stateful DHCPv6 (for now, only stateless DHCPv6 for DNS and NTP servers works) + * - create Client Identifier? + * - only start requests if a valid local address is available on the netif + * - only start information requests if required (not for every RA) + * + * dhcp6_enable_stateful() enables stateful DHCPv6 for a netif (stateless disabled)\n + * dhcp6_enable_stateless() enables stateless DHCPv6 for a netif (stateful disabled)\n + * dhcp6_disable() disable DHCPv6 for a netif + * + * When enabled, requests are only issued after receipt of RA with the + * corresponding bits set. + */ + +/* + * Copyright (c) 2018 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + */ + +#include "lwip/opt.h" + +#if LWIP_IPV6 && LWIP_IPV6_DHCP6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/dhcp6.h" +#include "lwip/prot/dhcp6.h" +#include "lwip/def.h" +#include "lwip/udp.h" +#include "lwip/dns.h" + +#include + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif +#ifndef LWIP_HOOK_DHCP6_APPEND_OPTIONS +#define LWIP_HOOK_DHCP6_APPEND_OPTIONS(netif, dhcp6, state, msg, msg_type, options_len_ptr, max_len) +#endif +#ifndef LWIP_HOOK_DHCP6_PARSE_OPTION +#define LWIP_HOOK_DHCP6_PARSE_OPTION(netif, dhcp6, state, msg, msg_type, option, len, pbuf, offset) do { LWIP_UNUSED_ARG(msg); } while(0) +#endif + +#if LWIP_DNS && LWIP_DHCP6_MAX_DNS_SERVERS +#if DNS_MAX_SERVERS > LWIP_DHCP6_MAX_DNS_SERVERS +#define LWIP_DHCP6_PROVIDE_DNS_SERVERS LWIP_DHCP6_MAX_DNS_SERVERS +#else +#define LWIP_DHCP6_PROVIDE_DNS_SERVERS DNS_MAX_SERVERS +#endif +#else +#define LWIP_DHCP6_PROVIDE_DNS_SERVERS 0 +#endif + + +/** Option handling: options are parsed in dhcp6_parse_reply + * and saved in an array where other functions can load them from. + * This might be moved into the struct dhcp6 (not necessarily since + * lwIP is single-threaded and the array is only used while in recv + * callback). */ +enum dhcp6_option_idx { + DHCP6_OPTION_IDX_CLI_ID = 0, + DHCP6_OPTION_IDX_SERVER_ID, +#if LWIP_DHCP6_PROVIDE_DNS_SERVERS + DHCP6_OPTION_IDX_DNS_SERVER, + DHCP6_OPTION_IDX_DOMAIN_LIST, +#endif /* LWIP_DHCP_PROVIDE_DNS_SERVERS */ +#if LWIP_DHCP6_GET_NTP_SRV + DHCP6_OPTION_IDX_NTP_SERVER, +#endif /* LWIP_DHCP_GET_NTP_SRV */ + DHCP6_OPTION_IDX_MAX +}; + +struct dhcp6_option_info { + u8_t option_given; + u16_t val_start; + u16_t val_length; +}; + +/** Holds the decoded option info, only valid while in dhcp6_recv. */ +struct dhcp6_option_info dhcp6_rx_options[DHCP6_OPTION_IDX_MAX]; + +#define dhcp6_option_given(dhcp6, idx) (dhcp6_rx_options[idx].option_given != 0) +#define dhcp6_got_option(dhcp6, idx) (dhcp6_rx_options[idx].option_given = 1) +#define dhcp6_clear_option(dhcp6, idx) (dhcp6_rx_options[idx].option_given = 0) +#define dhcp6_clear_all_options(dhcp6) (memset(dhcp6_rx_options, 0, sizeof(dhcp6_rx_options))) +#define dhcp6_get_option_start(dhcp6, idx) (dhcp6_rx_options[idx].val_start) +#define dhcp6_get_option_length(dhcp6, idx) (dhcp6_rx_options[idx].val_length) +#define dhcp6_set_option(dhcp6, idx, start, len) do { dhcp6_rx_options[idx].val_start = (start); dhcp6_rx_options[idx].val_length = (len); }while(0) + + +const ip_addr_t dhcp6_All_DHCP6_Relay_Agents_and_Servers = IPADDR6_INIT_HOST(0xFF020000, 0, 0, 0x00010002); +const ip_addr_t dhcp6_All_DHCP6_Servers = IPADDR6_INIT_HOST(0xFF020000, 0, 0, 0x00010003); + +static struct udp_pcb *dhcp6_pcb; +static u8_t dhcp6_pcb_refcount; + + +/* receive, unfold, parse and free incoming messages */ +static void dhcp6_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port); + +/** Ensure DHCP PCB is allocated and bound */ +static err_t +dhcp6_inc_pcb_refcount(void) +{ + if (dhcp6_pcb_refcount == 0) { + LWIP_ASSERT("dhcp6_inc_pcb_refcount(): memory leak", dhcp6_pcb == NULL); + + /* allocate UDP PCB */ + dhcp6_pcb = udp_new_ip6(); + + if (dhcp6_pcb == NULL) { + return ERR_MEM; + } + + ip_set_option(dhcp6_pcb, SOF_BROADCAST); + + /* set up local and remote port for the pcb -> listen on all interfaces on all src/dest IPs */ + udp_bind(dhcp6_pcb, IP6_ADDR_ANY, DHCP6_CLIENT_PORT); + udp_recv(dhcp6_pcb, dhcp6_recv, NULL); + } + + dhcp6_pcb_refcount++; + + return ERR_OK; +} + +/** Free DHCP PCB if the last netif stops using it */ +static void +dhcp6_dec_pcb_refcount(void) +{ + LWIP_ASSERT("dhcp6_pcb_refcount(): refcount error", (dhcp6_pcb_refcount > 0)); + dhcp6_pcb_refcount--; + + if (dhcp6_pcb_refcount == 0) { + udp_remove(dhcp6_pcb); + dhcp6_pcb = NULL; + } +} + +/** + * @ingroup dhcp6 + * Set a statically allocated struct dhcp6 to work with. + * Using this prevents dhcp6_start to allocate it using mem_malloc. + * + * @param netif the netif for which to set the struct dhcp + * @param dhcp6 (uninitialised) dhcp6 struct allocated by the application + */ +void +dhcp6_set_struct(struct netif *netif, struct dhcp6 *dhcp6) +{ + LWIP_ASSERT("netif != NULL", netif != NULL); + LWIP_ASSERT("dhcp6 != NULL", dhcp6 != NULL); + LWIP_ASSERT("netif already has a struct dhcp6 set", netif_dhcp6_data(netif) == NULL); + + /* clear data structure */ + memset(dhcp6, 0, sizeof(struct dhcp6)); + /* dhcp6_set_state(&dhcp, DHCP6_STATE_OFF); */ + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, dhcp6); +} + +/** + * @ingroup dhcp6 + * Removes a struct dhcp6 from a netif. + * + * ATTENTION: Only use this when not using dhcp6_set_struct() to allocate the + * struct dhcp6 since the memory is passed back to the heap. + * + * @param netif the netif from which to remove the struct dhcp + */ +void dhcp6_cleanup(struct netif *netif) +{ + LWIP_ASSERT("netif != NULL", netif != NULL); + + if (netif_dhcp6_data(netif) != NULL) { + mem_free(netif_dhcp6_data(netif)); + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, NULL); + } +} + +static struct dhcp6* +dhcp6_get_struct(struct netif *netif, const char *dbg_requester) +{ + struct dhcp6 *dhcp6 = netif_dhcp6_data(netif); + if (dhcp6 == NULL) { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("%s: mallocing new DHCPv6 client\n", dbg_requester)); + dhcp6 = (struct dhcp6 *)mem_malloc(sizeof(struct dhcp6)); + if (dhcp6 == NULL) { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("%s: could not allocate dhcp6\n", dbg_requester)); + return NULL; + } + + /* clear data structure, this implies DHCP6_STATE_OFF */ + memset(dhcp6, 0, sizeof(struct dhcp6)); + /* store this dhcp6 client in the netif */ + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, dhcp6); + } else { + /* already has DHCP6 client attached */ + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("%s: using existing DHCPv6 client\n", dbg_requester)); + } + + if (!dhcp6->pcb_allocated) { + if (dhcp6_inc_pcb_refcount() != ERR_OK) { /* ensure DHCP6 PCB is allocated */ + mem_free(dhcp6); + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, NULL); + return NULL; + } + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("%s: allocated dhcp6", dbg_requester)); + dhcp6->pcb_allocated = 1; + } + return dhcp6; +} + +/* + * Set the DHCPv6 state + * If the state changed, reset the number of tries. + */ +static void +dhcp6_set_state(struct dhcp6 *dhcp6, u8_t new_state, const char *dbg_caller) +{ + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("DHCPv6 state: %d -> %d (%s)\n", + dhcp6->state, new_state, dbg_caller)); + if (new_state != dhcp6->state) { + dhcp6->state = new_state; + dhcp6->tries = 0; + dhcp6->request_timeout = 0; + } +} + +static int +dhcp6_stateless_enabled(struct dhcp6 *dhcp6) +{ + if ((dhcp6->state == DHCP6_STATE_STATELESS_IDLE) || + (dhcp6->state == DHCP6_STATE_REQUESTING_CONFIG)) { + return 1; + } + return 0; +} + +/*static int +dhcp6_stateful_enabled(struct dhcp6 *dhcp6) +{ + if (dhcp6->state == DHCP6_STATE_OFF) { + return 0; + } + if (dhcp6_stateless_enabled(dhcp6)) { + return 0; + } + return 1; +}*/ + +/** + * @ingroup dhcp6 + * Enable stateful DHCPv6 on this netif + * Requests are sent on receipt of an RA message with the + * ND6_RA_FLAG_MANAGED_ADDR_CONFIG flag set. + * + * A struct dhcp6 will be allocated for this netif if not + * set via @ref dhcp6_set_struct before. + * + * @todo: stateful DHCPv6 not supported, yet + */ +err_t +dhcp6_enable_stateful(struct netif *netif) +{ + LWIP_UNUSED_ARG(netif); + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("stateful dhcp6 not implemented yet")); + return ERR_VAL; +} + +/** + * @ingroup dhcp6 + * Enable stateless DHCPv6 on this netif + * Requests are sent on receipt of an RA message with the + * ND6_RA_FLAG_OTHER_CONFIG flag set. + * + * A struct dhcp6 will be allocated for this netif if not + * set via @ref dhcp6_set_struct before. + */ +err_t +dhcp6_enable_stateless(struct netif *netif) +{ + struct dhcp6 *dhcp6; + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp6_enable_stateless(netif=%p) %c%c%"U16_F"\n", (void *)netif, netif->name[0], netif->name[1], (u16_t)netif->num)); + + dhcp6 = dhcp6_get_struct(netif, "dhcp6_enable_stateless()"); + if (dhcp6 == NULL) { + return ERR_MEM; + } + if (dhcp6_stateless_enabled(dhcp6)) { + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp6_enable_stateless(): stateless DHCPv6 already enabled")); + return ERR_OK; + } else if (dhcp6->state != DHCP6_STATE_OFF) { + /* stateful running */ + /* @todo: stop stateful once it is implemented */ + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp6_enable_stateless(): switching from stateful to stateless DHCPv6")); + } + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp6_enable_stateless(): stateless DHCPv6 enabled\n")); + dhcp6_set_state(dhcp6, DHCP6_STATE_STATELESS_IDLE, "dhcp6_enable_stateless"); + return ERR_OK; +} + +/** + * @ingroup dhcp6 + * Disable stateful or stateless DHCPv6 on this netif + * Requests are sent on receipt of an RA message with the + * ND6_RA_FLAG_OTHER_CONFIG flag set. + */ +void +dhcp6_disable(struct netif *netif) +{ + struct dhcp6 *dhcp6; + + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp6_disable(netif=%p) %c%c%"U16_F"\n", (void *)netif, netif->name[0], netif->name[1], (u16_t)netif->num)); + + dhcp6 = netif_dhcp6_data(netif); + if (dhcp6 != NULL) { + if (dhcp6->state != DHCP6_STATE_OFF) { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("dhcp6_disable(): DHCPv6 disabled (old state: %s)\n", + (dhcp6_stateless_enabled(dhcp6) ? "stateless" : "stateful"))); + dhcp6_set_state(dhcp6, DHCP6_STATE_OFF, "dhcp6_disable"); + if (dhcp6->pcb_allocated != 0) { + dhcp6_dec_pcb_refcount(); /* free DHCPv6 PCB if not needed any more */ + dhcp6->pcb_allocated = 0; + } + } + } +} + +/** + * Create a DHCPv6 request, fill in common headers + * + * @param netif the netif under DHCPv6 control + * @param dhcp6 dhcp6 control struct + * @param message_type message type of the request + * @param opt_len_alloc option length to allocate + * @param options_out_len option length on exit + * @return a pbuf for the message + */ +static struct pbuf * +dhcp6_create_msg(struct netif *netif, struct dhcp6 *dhcp6, u8_t message_type, + u16_t opt_len_alloc, u16_t *options_out_len) +{ + struct pbuf *p_out; + struct dhcp6_msg *msg_out; + + LWIP_ERROR("dhcp6_create_msg: netif != NULL", (netif != NULL), return NULL;); + LWIP_ERROR("dhcp6_create_msg: dhcp6 != NULL", (dhcp6 != NULL), return NULL;); + p_out = pbuf_alloc(PBUF_TRANSPORT, sizeof(struct dhcp6_msg) + opt_len_alloc, PBUF_RAM); + if (p_out == NULL) { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, + ("dhcp6_create_msg(): could not allocate pbuf\n")); + return NULL; + } + LWIP_ASSERT("dhcp6_create_msg: check that first pbuf can hold struct dhcp6_msg", + (p_out->len >= sizeof(struct dhcp6_msg) + opt_len_alloc)); + + /* @todo: limit new xid for certain message types? */ + /* reuse transaction identifier in retransmissions */ + if (dhcp6->tries == 0) { + dhcp6->xid = LWIP_RAND() & 0xFFFFFF; + } + + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, + ("transaction id xid(%"X32_F")\n", dhcp6->xid)); + + msg_out = (struct dhcp6_msg *)p_out->payload; + memset(msg_out, 0, sizeof(struct dhcp6_msg) + opt_len_alloc); + + msg_out->msgtype = message_type; + msg_out->transaction_id[0] = (u8_t)(dhcp6->xid >> 16); + msg_out->transaction_id[1] = (u8_t)(dhcp6->xid >> 8); + msg_out->transaction_id[2] = (u8_t)dhcp6->xid; + *options_out_len = 0; + return p_out; +} + +static u16_t +dhcp6_option_short(u16_t options_out_len, u8_t *options, u16_t value) +{ + options[options_out_len++] = (u8_t)((value & 0xff00U) >> 8); + options[options_out_len++] = (u8_t) (value & 0x00ffU); + return options_out_len; +} + +static u16_t +dhcp6_option_optionrequest(u16_t options_out_len, u8_t *options, const u16_t *req_options, + u16_t num_req_options, u16_t max_len) +{ + size_t i; + u16_t ret; + + LWIP_ASSERT("dhcp6_option_optionrequest: options_out_len + sizeof(struct dhcp6_msg) + addlen <= max_len", + sizeof(struct dhcp6_msg) + options_out_len + 4U + (2U * num_req_options) <= max_len); + LWIP_UNUSED_ARG(max_len); + + ret = dhcp6_option_short(options_out_len, options, DHCP6_OPTION_ORO); + ret = dhcp6_option_short(ret, options, 2 * num_req_options); + for (i = 0; i < num_req_options; i++) { + ret = dhcp6_option_short(ret, options, req_options[i]); + } + return ret; +} + +/* All options are added, shrink the pbuf to the required size */ +static void +dhcp6_msg_finalize(u16_t options_out_len, struct pbuf *p_out) +{ + /* shrink the pbuf to the actual content length */ + pbuf_realloc(p_out, (u16_t)(sizeof(struct dhcp6_msg) + options_out_len)); +} + + +#if LWIP_IPV6_DHCP6_STATELESS +static void +dhcp6_information_request(struct netif *netif, struct dhcp6 *dhcp6) +{ + const u16_t requested_options[] = {DHCP6_OPTION_DNS_SERVERS, DHCP6_OPTION_DOMAIN_LIST, DHCP6_OPTION_SNTP_SERVERS}; + u16_t msecs; + struct pbuf *p_out; + u16_t options_out_len; + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("dhcp6_information_request()\n")); + /* create and initialize the DHCP message header */ + p_out = dhcp6_create_msg(netif, dhcp6, DHCP6_INFOREQUEST, 4 + sizeof(requested_options), &options_out_len); + if (p_out != NULL) { + err_t err; + struct dhcp6_msg *msg_out = (struct dhcp6_msg *)p_out->payload; + u8_t *options = (u8_t *)(msg_out + 1); + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("dhcp6_information_request: making request\n")); + + options_out_len = dhcp6_option_optionrequest(options_out_len, options, requested_options, + LWIP_ARRAYSIZE(requested_options), p_out->len); + LWIP_HOOK_DHCP6_APPEND_OPTIONS(netif, dhcp6, DHCP6_STATE_REQUESTING_CONFIG, msg_out, + DHCP6_INFOREQUEST, options_out_len, p_out->len); + dhcp6_msg_finalize(options_out_len, p_out); + + err = udp_sendto_if(dhcp6_pcb, p_out, &dhcp6_All_DHCP6_Relay_Agents_and_Servers, DHCP6_SERVER_PORT, netif); + pbuf_free(p_out); + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp6_information_request: INFOREQUESTING -> %d\n", (int)err)); + LWIP_UNUSED_ARG(err); + } else { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("dhcp6_information_request: could not allocate DHCP6 request\n")); + } + dhcp6_set_state(dhcp6, DHCP6_STATE_REQUESTING_CONFIG, "dhcp6_information_request"); + if (dhcp6->tries < 255) { + dhcp6->tries++; + } + msecs = (u16_t)((dhcp6->tries < 6 ? 1 << dhcp6->tries : 60) * 1000); + dhcp6->request_timeout = (u16_t)((msecs + DHCP6_TIMER_MSECS - 1) / DHCP6_TIMER_MSECS); + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp6_information_request(): set request timeout %"U16_F" msecs\n", msecs)); +} + +static err_t +dhcp6_request_config(struct netif *netif, struct dhcp6 *dhcp6) +{ + /* stateless mode enabled and no request running? */ + if (dhcp6->state == DHCP6_STATE_STATELESS_IDLE) { + /* send Information-request and wait for answer; setup receive timeout */ + dhcp6_information_request(netif, dhcp6); + } + + return ERR_OK; +} + +static void +dhcp6_abort_config_request(struct dhcp6 *dhcp6) +{ + if (dhcp6->state == DHCP6_STATE_REQUESTING_CONFIG) { + /* abort running request */ + dhcp6_set_state(dhcp6, DHCP6_STATE_STATELESS_IDLE, "dhcp6_abort_config_request"); + } +} + +/* Handle a REPLY to INFOREQUEST + * This parses DNS and NTP server addresses from the reply. + */ +static void +dhcp6_handle_config_reply(struct netif *netif, struct pbuf *p_msg_in) +{ + struct dhcp6 *dhcp6 = netif_dhcp6_data(netif); + + LWIP_UNUSED_ARG(dhcp6); + LWIP_UNUSED_ARG(p_msg_in); + +#if LWIP_DHCP6_PROVIDE_DNS_SERVERS + if (dhcp6_option_given(dhcp6, DHCP6_OPTION_IDX_DNS_SERVER)) { + ip_addr_t dns_addr; + ip6_addr_t *dns_addr6; + u16_t op_start = dhcp6_get_option_start(dhcp6, DHCP6_OPTION_IDX_DNS_SERVER); + u16_t op_len = dhcp6_get_option_length(dhcp6, DHCP6_OPTION_IDX_DNS_SERVER); + u16_t idx; + u8_t n; + + memset(&dns_addr, 0, sizeof(dns_addr)); + dns_addr6 = ip_2_ip6(&dns_addr); + for (n = 0, idx = op_start; (idx < op_start + op_len) && (n < LWIP_DHCP6_PROVIDE_DNS_SERVERS); + n++, idx += sizeof(struct ip6_addr_packed)) { + u16_t copied = pbuf_copy_partial(p_msg_in, dns_addr6, sizeof(struct ip6_addr_packed), idx); + if (copied != sizeof(struct ip6_addr_packed)) { + /* pbuf length mismatch */ + return; + } + ip6_addr_assign_zone(dns_addr6, IP6_UNKNOWN, netif); + /* @todo: do we need a different offset than DHCP(v4)? */ + dns_setserver(n, &dns_addr); + } + } + /* @ todo: parse and set Domain Search List */ +#endif /* LWIP_DHCP6_PROVIDE_DNS_SERVERS */ + +#if LWIP_DHCP6_GET_NTP_SRV + if (dhcp6_option_given(dhcp6, DHCP6_OPTION_IDX_NTP_SERVER)) { + ip_addr_t ntp_server_addrs[LWIP_DHCP6_MAX_NTP_SERVERS]; + u16_t op_start = dhcp6_get_option_start(dhcp6, DHCP6_OPTION_IDX_NTP_SERVER); + u16_t op_len = dhcp6_get_option_length(dhcp6, DHCP6_OPTION_IDX_NTP_SERVER); + u16_t idx; + u8_t n; + + for (n = 0, idx = op_start; (idx < op_start + op_len) && (n < LWIP_DHCP6_MAX_NTP_SERVERS); + n++, idx += sizeof(struct ip6_addr_packed)) { + u16_t copied; + ip6_addr_t *ntp_addr6 = ip_2_ip6(&ntp_server_addrs[n]); + ip_addr_set_zero_ip6(&ntp_server_addrs[n]); + copied = pbuf_copy_partial(p_msg_in, ntp_addr6, sizeof(struct ip6_addr_packed), idx); + if (copied != sizeof(struct ip6_addr_packed)) { + /* pbuf length mismatch */ + return; + } + ip6_addr_assign_zone(ntp_addr6, IP6_UNKNOWN, netif); + } + dhcp6_set_ntp_servers(n, ntp_server_addrs); + } +#endif /* LWIP_DHCP6_GET_NTP_SRV */ +} +#endif /* LWIP_IPV6_DHCP6_STATELESS */ + +/** This function is called from nd6 module when an RA messsage is received + * It triggers DHCPv6 requests (if enabled). + */ +void +dhcp6_nd6_ra_trigger(struct netif *netif, u8_t managed_addr_config, u8_t other_config) +{ + struct dhcp6 *dhcp6; + + LWIP_ASSERT("netif != NULL", netif != NULL); + dhcp6 = netif_dhcp6_data(netif); + + LWIP_UNUSED_ARG(managed_addr_config); + LWIP_UNUSED_ARG(other_config); + LWIP_UNUSED_ARG(dhcp6); + +#if LWIP_IPV6_DHCP6_STATELESS + if (dhcp6 != NULL) { + if (dhcp6_stateless_enabled(dhcp6)) { + if (other_config) { + dhcp6_request_config(netif, dhcp6); + } else { + dhcp6_abort_config_request(dhcp6); + } + } + } +#endif /* LWIP_IPV6_DHCP6_STATELESS */ +} + +/** + * Parse the DHCPv6 message and extract the DHCPv6 options. + * + * Extract the DHCPv6 options (offset + length) so that we can later easily + * check for them or extract the contents. + */ +static err_t +dhcp6_parse_reply(struct pbuf *p, struct dhcp6 *dhcp6) +{ + u16_t offset; + u16_t offset_max; + u16_t options_idx; + struct dhcp6_msg *msg_in; + + LWIP_UNUSED_ARG(dhcp6); + + /* clear received options */ + dhcp6_clear_all_options(dhcp6); + msg_in = (struct dhcp6_msg *)p->payload; + + /* parse options */ + + options_idx = sizeof(struct dhcp6_msg); + /* parse options to the end of the received packet */ + offset_max = p->tot_len; + + offset = options_idx; + /* at least 4 byte to read? */ + while ((offset + 4 <= offset_max)) { + u8_t op_len_buf[4]; + u8_t *op_len; + u16_t op; + u16_t len; + u16_t val_offset = (u16_t)(offset + 4); + if (val_offset < offset) { + /* overflow */ + return ERR_BUF; + } + /* copy option + length, might be split accross pbufs */ + op_len = (u8_t *)pbuf_get_contiguous(p, op_len_buf, 4, 4, offset); + if (op_len == NULL) { + /* failed to get option and length */ + return ERR_VAL; + } + op = (op_len[0] << 8) | op_len[1]; + len = (op_len[2] << 8) | op_len[3]; + offset = val_offset + len; + if (offset < val_offset) { + /* overflow */ + return ERR_BUF; + } + + switch (op) { + case (DHCP6_OPTION_CLIENTID): + dhcp6_got_option(dhcp6, DHCP6_OPTION_IDX_CLI_ID); + dhcp6_set_option(dhcp6, DHCP6_OPTION_IDX_CLI_ID, val_offset, len); + break; + case (DHCP6_OPTION_SERVERID): + dhcp6_got_option(dhcp6, DHCP6_OPTION_IDX_SERVER_ID); + dhcp6_set_option(dhcp6, DHCP6_OPTION_IDX_SERVER_ID, val_offset, len); + break; +#if LWIP_DHCP6_PROVIDE_DNS_SERVERS + case (DHCP6_OPTION_DNS_SERVERS): + dhcp6_got_option(dhcp6, DHCP6_OPTION_IDX_DNS_SERVER); + dhcp6_set_option(dhcp6, DHCP6_OPTION_IDX_DNS_SERVER, val_offset, len); + break; + case (DHCP6_OPTION_DOMAIN_LIST): + dhcp6_got_option(dhcp6, DHCP6_OPTION_IDX_DOMAIN_LIST); + dhcp6_set_option(dhcp6, DHCP6_OPTION_IDX_DOMAIN_LIST, val_offset, len); + break; +#endif /* LWIP_DHCP6_PROVIDE_DNS_SERVERS */ +#if LWIP_DHCP6_GET_NTP_SRV + case (DHCP6_OPTION_SNTP_SERVERS): + dhcp6_got_option(dhcp6, DHCP6_OPTION_IDX_NTP_SERVER); + dhcp6_set_option(dhcp6, DHCP6_OPTION_IDX_NTP_SERVER, val_offset, len); + break; +#endif /* LWIP_DHCP6_GET_NTP_SRV*/ + default: + LWIP_DEBUGF(DHCP6_DEBUG, ("skipping option %"U16_F" in options\n", op)); + LWIP_HOOK_DHCP6_PARSE_OPTION(ip_current_netif(), dhcp6, dhcp6->state, msg_in, + msg_in->msgtype, op, len, q, val_offset); + break; + } + } + return ERR_OK; +} + +static void +dhcp6_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port) +{ + struct netif *netif = ip_current_input_netif(); + struct dhcp6 *dhcp6 = netif_dhcp6_data(netif); + struct dhcp6_msg *reply_msg = (struct dhcp6_msg *)p->payload; + u8_t msg_type; + u32_t xid; + + LWIP_UNUSED_ARG(arg); + + /* Caught DHCPv6 message from netif that does not have DHCPv6 enabled? -> not interested */ + if ((dhcp6 == NULL) || (dhcp6->pcb_allocated == 0)) { + goto free_pbuf_and_return; + } + + LWIP_ERROR("invalid server address type", IP_IS_V6(addr), goto free_pbuf_and_return;); + + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("dhcp6_recv(pbuf = %p) from DHCPv6 server %s port %"U16_F"\n", (void *)p, + ipaddr_ntoa(addr), port)); + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("pbuf->len = %"U16_F"\n", p->len)); + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("pbuf->tot_len = %"U16_F"\n", p->tot_len)); + /* prevent warnings about unused arguments */ + LWIP_UNUSED_ARG(pcb); + LWIP_UNUSED_ARG(addr); + LWIP_UNUSED_ARG(port); + + if (p->len < sizeof(struct dhcp6_msg)) { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, ("DHCPv6 reply message or pbuf too short\n")); + goto free_pbuf_and_return; + } + + /* match transaction ID against what we expected */ + xid = reply_msg->transaction_id[0] << 16; + xid |= reply_msg->transaction_id[1] << 8; + xid |= reply_msg->transaction_id[2]; + if (xid != dhcp6->xid) { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, + ("transaction id mismatch reply_msg->xid(%"X32_F")!= dhcp6->xid(%"X32_F")\n", xid, dhcp6->xid)); + goto free_pbuf_and_return; + } + /* option fields could be unfold? */ + if (dhcp6_parse_reply(p, dhcp6) != ERR_OK) { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, + ("problem unfolding DHCPv6 message - too short on memory?\n")); + goto free_pbuf_and_return; + } + + /* read DHCP message type */ + msg_type = reply_msg->msgtype; + /* message type is DHCP6 REPLY? */ + if (msg_type == DHCP6_REPLY) { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("DHCP6_REPLY received\n")); +#if LWIP_IPV6_DHCP6_STATELESS + /* in info-requesting state? */ + if (dhcp6->state == DHCP6_STATE_REQUESTING_CONFIG) { + dhcp6_set_state(dhcp6, DHCP6_STATE_STATELESS_IDLE, "dhcp6_recv"); + dhcp6_handle_config_reply(netif, p); + } else +#endif /* LWIP_IPV6_DHCP6_STATELESS */ + { + /* @todo: handle reply in other states? */ + } + } else { + /* @todo: handle other message types */ + } + +free_pbuf_and_return: + pbuf_free(p); +} + +/** + * A DHCPv6 request has timed out. + * + * The timer that was started with the DHCPv6 request has + * timed out, indicating no response was received in time. + */ +static void +dhcp6_timeout(struct netif *netif, struct dhcp6 *dhcp6) +{ + LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp6_timeout()\n")); + + LWIP_UNUSED_ARG(netif); + LWIP_UNUSED_ARG(dhcp6); + +#if LWIP_IPV6_DHCP6_STATELESS + /* back-off period has passed, or server selection timed out */ + if (dhcp6->state == DHCP6_STATE_REQUESTING_CONFIG) { + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("dhcp6_timeout(): retrying information request\n")); + dhcp6_information_request(netif, dhcp6); + } +#endif /* LWIP_IPV6_DHCP6_STATELESS */ +} + +/** + * DHCPv6 timeout handling (this function must be called every 500ms, + * see @ref DHCP6_TIMER_MSECS). + * + * A DHCPv6 server is expected to respond within a short period of time. + * This timer checks whether an outstanding DHCPv6 request is timed out. + */ +void +dhcp6_tmr(void) +{ + struct netif *netif; + /* loop through netif's */ + NETIF_FOREACH(netif) { + struct dhcp6 *dhcp6 = netif_dhcp6_data(netif); + /* only act on DHCPv6 configured interfaces */ + if (dhcp6 != NULL) { + /* timer is active (non zero), and is about to trigger now */ + if (dhcp6->request_timeout > 1) { + dhcp6->request_timeout--; + } else if (dhcp6->request_timeout == 1) { + dhcp6->request_timeout--; + /* { dhcp6->request_timeout == 0 } */ + LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp6_tmr(): request timeout\n")); + /* this client's request timeout triggered */ + dhcp6_timeout(netif, dhcp6); + } + } + } +} + +#endif /* LWIP_IPV6 && LWIP_IPV6_DHCP6 */ diff --git a/Other/tun2socks/core/c/core/ipv6/ethip6.c b/Other/tun2socks/core/c/core/ipv6/ethip6.c new file mode 100644 index 0000000..fec8b28 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv6/ethip6.c @@ -0,0 +1,123 @@ +/** + * @file + * + * Ethernet output for IPv6. Uses ND tables for link-layer addressing. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV6 && LWIP_ETHERNET + +#include "lwip/ethip6.h" +#include "lwip/nd6.h" +#include "lwip/pbuf.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/inet_chksum.h" +#include "lwip/netif.h" +#include "lwip/icmp6.h" +#include "lwip/prot/ethernet.h" +#include "netif/ethernet.h" + +#include + +/** + * Resolve and fill-in Ethernet address header for outgoing IPv6 packet. + * + * For IPv6 multicast, corresponding Ethernet addresses + * are selected and the packet is transmitted on the link. + * + * For unicast addresses, ask the ND6 module what to do. It will either let us + * send the the packet right away, or queue the packet for later itself, unless + * an error occurs. + * + * @todo anycast addresses + * + * @param netif The lwIP network interface which the IP packet will be sent on. + * @param q The pbuf(s) containing the IP packet to be sent. + * @param ip6addr The IP address of the packet destination. + * + * @return + * - ERR_OK or the return value of @ref nd6_get_next_hop_addr_or_queue. + */ +err_t +ethip6_output(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr) +{ + struct eth_addr dest; + const u8_t *hwaddr; + err_t result; + + LWIP_ASSERT_CORE_LOCKED(); + + /* The destination IP address must be properly zoned from here on down. */ + IP6_ADDR_ZONECHECK_NETIF(ip6addr, netif); + + /* multicast destination IP address? */ + if (ip6_addr_ismulticast(ip6addr)) { + /* Hash IP multicast address to MAC address.*/ + dest.addr[0] = 0x33; + dest.addr[1] = 0x33; + dest.addr[2] = ((const u8_t *)(&(ip6addr->addr[3])))[0]; + dest.addr[3] = ((const u8_t *)(&(ip6addr->addr[3])))[1]; + dest.addr[4] = ((const u8_t *)(&(ip6addr->addr[3])))[2]; + dest.addr[5] = ((const u8_t *)(&(ip6addr->addr[3])))[3]; + + /* Send out. */ + return ethernet_output(netif, q, (const struct eth_addr*)(netif->hwaddr), &dest, ETHTYPE_IPV6); + } + + /* We have a unicast destination IP address */ + /* @todo anycast? */ + + /* Ask ND6 what to do with the packet. */ + result = nd6_get_next_hop_addr_or_queue(netif, q, ip6addr, &hwaddr); + if (result != ERR_OK) { + return result; + } + + /* If no hardware address is returned, nd6 has queued the packet for later. */ + if (hwaddr == NULL) { + return ERR_OK; + } + + /* Send out the packet using the returned hardware address. */ + SMEMCPY(dest.addr, hwaddr, 6); + return ethernet_output(netif, q, (const struct eth_addr*)(netif->hwaddr), &dest, ETHTYPE_IPV6); +} + +#endif /* LWIP_IPV6 && LWIP_ETHERNET */ diff --git a/Other/tun2socks/core/c/core/ipv6/icmp6.c b/Other/tun2socks/core/c/core/ipv6/icmp6.c new file mode 100644 index 0000000..167738a --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv6/icmp6.c @@ -0,0 +1,425 @@ +/** + * @file + * + * IPv6 version of ICMP, as per RFC 4443. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#include "lwip/opt.h" + +#if LWIP_ICMP6 && LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/icmp6.h" +#include "lwip/prot/icmp6.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/inet_chksum.h" +#include "lwip/pbuf.h" +#include "lwip/netif.h" +#include "lwip/nd6.h" +#include "lwip/mld6.h" +#include "lwip/ip.h" +#include "lwip/stats.h" + +#include + +#if LWIP_ICMP6_DATASIZE == 0 +#undef LWIP_ICMP6_DATASIZE +#define LWIP_ICMP6_DATASIZE 8 +#endif + +/* Forward declarations */ +static void icmp6_send_response(struct pbuf *p, u8_t code, u32_t data, u8_t type); +static void icmp6_send_response_with_addrs(struct pbuf *p, u8_t code, u32_t data, + u8_t type, const ip6_addr_t *src_addr, const ip6_addr_t *dest_addr); +static void icmp6_send_response_with_addrs_and_netif(struct pbuf *p, u8_t code, u32_t data, + u8_t type, const ip6_addr_t *src_addr, const ip6_addr_t *dest_addr, struct netif *netif); + + +/** + * Process an input ICMPv6 message. Called by ip6_input. + * + * Will generate a reply for echo requests. Other messages are forwarded + * to nd6_input, or mld6_input. + * + * @param p the mld packet, p->payload pointing to the icmpv6 header + * @param inp the netif on which this packet was received + */ +void +icmp6_input(struct pbuf *p, struct netif *inp) +{ + struct icmp6_hdr *icmp6hdr; + struct pbuf *r; + const ip6_addr_t *reply_src; + + ICMP6_STATS_INC(icmp6.recv); + + /* Check that ICMPv6 header fits in payload */ + if (p->len < sizeof(struct icmp6_hdr)) { + /* drop short packets */ + pbuf_free(p); + ICMP6_STATS_INC(icmp6.lenerr); + ICMP6_STATS_INC(icmp6.drop); + return; + } + + icmp6hdr = (struct icmp6_hdr *)p->payload; + +#if CHECKSUM_CHECK_ICMP6 + IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_CHECK_ICMP6) { + if (ip6_chksum_pseudo(p, IP6_NEXTH_ICMP6, p->tot_len, ip6_current_src_addr(), + ip6_current_dest_addr()) != 0) { + /* Checksum failed */ + pbuf_free(p); + ICMP6_STATS_INC(icmp6.chkerr); + ICMP6_STATS_INC(icmp6.drop); + return; + } + } +#endif /* CHECKSUM_CHECK_ICMP6 */ + + switch (icmp6hdr->type) { + case ICMP6_TYPE_NA: /* Neighbor advertisement */ + case ICMP6_TYPE_NS: /* Neighbor solicitation */ + case ICMP6_TYPE_RA: /* Router advertisement */ + case ICMP6_TYPE_RD: /* Redirect */ + case ICMP6_TYPE_PTB: /* Packet too big */ + nd6_input(p, inp); + return; + case ICMP6_TYPE_RS: +#if LWIP_IPV6_FORWARD + /* @todo implement router functionality */ +#endif + break; +#if LWIP_IPV6_MLD + case ICMP6_TYPE_MLQ: + case ICMP6_TYPE_MLR: + case ICMP6_TYPE_MLD: + mld6_input(p, inp); + return; +#endif + case ICMP6_TYPE_EREQ: +#if !LWIP_MULTICAST_PING + /* multicast destination address? */ + if (ip6_addr_ismulticast(ip6_current_dest_addr())) { + /* drop */ + pbuf_free(p); + ICMP6_STATS_INC(icmp6.drop); + return; + } +#endif /* LWIP_MULTICAST_PING */ + + /* Allocate reply. */ + r = pbuf_alloc(PBUF_IP, p->tot_len, PBUF_RAM); + if (r == NULL) { + /* drop */ + pbuf_free(p); + ICMP6_STATS_INC(icmp6.memerr); + return; + } + + /* Copy echo request. */ + if (pbuf_copy(r, p) != ERR_OK) { + /* drop */ + pbuf_free(p); + pbuf_free(r); + ICMP6_STATS_INC(icmp6.err); + return; + } + + /* Determine reply source IPv6 address. */ +#if LWIP_MULTICAST_PING + if (ip6_addr_ismulticast(ip6_current_dest_addr())) { + reply_src = ip_2_ip6(ip6_select_source_address(inp, ip6_current_src_addr())); + if (reply_src == NULL) { + /* drop */ + pbuf_free(p); + pbuf_free(r); + ICMP6_STATS_INC(icmp6.rterr); + return; + } + } + else +#endif /* LWIP_MULTICAST_PING */ + { + reply_src = ip6_current_dest_addr(); + } + + /* Set fields in reply. */ + ((struct icmp6_echo_hdr *)(r->payload))->type = ICMP6_TYPE_EREP; + ((struct icmp6_echo_hdr *)(r->payload))->chksum = 0; +#if CHECKSUM_GEN_ICMP6 + IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_GEN_ICMP6) { + ((struct icmp6_echo_hdr *)(r->payload))->chksum = ip6_chksum_pseudo(r, + IP6_NEXTH_ICMP6, r->tot_len, reply_src, ip6_current_src_addr()); + } +#endif /* CHECKSUM_GEN_ICMP6 */ + + /* Send reply. */ + ICMP6_STATS_INC(icmp6.xmit); + ip6_output_if(r, reply_src, ip6_current_src_addr(), + LWIP_ICMP6_HL, 0, IP6_NEXTH_ICMP6, inp); + pbuf_free(r); + + break; + default: + ICMP6_STATS_INC(icmp6.proterr); + ICMP6_STATS_INC(icmp6.drop); + break; + } + + pbuf_free(p); +} + + +/** + * Send an icmpv6 'destination unreachable' packet. + * + * This function must be used only in direct response to a packet that is being + * received right now. Otherwise, address zones would be lost. + * + * @param p the input packet for which the 'unreachable' should be sent, + * p->payload pointing to the IPv6 header + * @param c ICMPv6 code for the unreachable type + */ +void +icmp6_dest_unreach(struct pbuf *p, enum icmp6_dur_code c) +{ + icmp6_send_response(p, c, 0, ICMP6_TYPE_DUR); +} + +/** + * Send an icmpv6 'packet too big' packet. + * + * This function must be used only in direct response to a packet that is being + * received right now. Otherwise, address zones would be lost. + * + * @param p the input packet for which the 'packet too big' should be sent, + * p->payload pointing to the IPv6 header + * @param mtu the maximum mtu that we can accept + */ +void +icmp6_packet_too_big(struct pbuf *p, u32_t mtu) +{ + icmp6_send_response(p, 0, mtu, ICMP6_TYPE_PTB); +} + +/** + * Send an icmpv6 'time exceeded' packet. + * + * This function must be used only in direct response to a packet that is being + * received right now. Otherwise, address zones would be lost. + * + * @param p the input packet for which the 'time exceeded' should be sent, + * p->payload pointing to the IPv6 header + * @param c ICMPv6 code for the time exceeded type + */ +void +icmp6_time_exceeded(struct pbuf *p, enum icmp6_te_code c) +{ + icmp6_send_response(p, c, 0, ICMP6_TYPE_TE); +} + +/** + * Send an icmpv6 'time exceeded' packet, with explicit source and destination + * addresses. + * + * This function may be used to send a response sometime after receiving the + * packet for which this response is meant. The provided source and destination + * addresses are used primarily to retain their zone information. + * + * @param p the input packet for which the 'time exceeded' should be sent, + * p->payload pointing to the IPv6 header + * @param c ICMPv6 code for the time exceeded type + * @param src_addr source address of the original packet, with zone information + * @param dest_addr destination address of the original packet, with zone + * information + */ +void +icmp6_time_exceeded_with_addrs(struct pbuf *p, enum icmp6_te_code c, + const ip6_addr_t *src_addr, const ip6_addr_t *dest_addr) +{ + icmp6_send_response_with_addrs(p, c, 0, ICMP6_TYPE_TE, src_addr, dest_addr); +} + +/** + * Send an icmpv6 'parameter problem' packet. + * + * This function must be used only in direct response to a packet that is being + * received right now. Otherwise, address zones would be lost and the calculated + * offset would be wrong (calculated against ip6_current_header()). + * + * @param p the input packet for which the 'param problem' should be sent, + * p->payload pointing to the IP header + * @param c ICMPv6 code for the param problem type + * @param pointer the pointer to the byte where the parameter is found + */ +void +icmp6_param_problem(struct pbuf *p, enum icmp6_pp_code c, const void *pointer) +{ + u32_t pointer_u32 = (u32_t)((const u8_t *)pointer - (const u8_t *)ip6_current_header()); + icmp6_send_response(p, c, pointer_u32, ICMP6_TYPE_PP); +} + +/** + * Send an ICMPv6 packet in response to an incoming packet. + * The packet is sent *to* ip_current_src_addr() on ip_current_netif(). + * + * @param p the input packet for which the response should be sent, + * p->payload pointing to the IPv6 header + * @param code Code of the ICMPv6 header + * @param data Additional 32-bit parameter in the ICMPv6 header + * @param type Type of the ICMPv6 header + */ +static void +icmp6_send_response(struct pbuf *p, u8_t code, u32_t data, u8_t type) +{ + const struct ip6_addr *reply_src, *reply_dest; + struct netif *netif = ip_current_netif(); + + LWIP_ASSERT("icmpv6 packet not a direct response", netif != NULL); + reply_dest = ip6_current_src_addr(); + + /* Select an address to use as source. */ + reply_src = ip_2_ip6(ip6_select_source_address(netif, reply_dest)); + if (reply_src == NULL) { + ICMP6_STATS_INC(icmp6.rterr); + return; + } + icmp6_send_response_with_addrs_and_netif(p, code, data, type, reply_src, reply_dest, netif); +} + +/** + * Send an ICMPv6 packet in response to an incoming packet. + * + * Call this function if the packet is NOT sent as a direct response to an + * incoming packet, but rather sometime later (e.g. for a fragment reassembly + * timeout). The caller must provide the zoned source and destination addresses + * from the original packet with the src_addr and dest_addr parameters. The + * reason for this approach is that while the addresses themselves are part of + * the original packet, their zone information is not, thus possibly resulting + * in a link-local response being sent over the wrong link. + * + * @param p the input packet for which the response should be sent, + * p->payload pointing to the IPv6 header + * @param code Code of the ICMPv6 header + * @param data Additional 32-bit parameter in the ICMPv6 header + * @param type Type of the ICMPv6 header + * @param src_addr original source address + * @param dest_addr original destination address + */ +static void +icmp6_send_response_with_addrs(struct pbuf *p, u8_t code, u32_t data, u8_t type, + const ip6_addr_t *src_addr, const ip6_addr_t *dest_addr) +{ + const struct ip6_addr *reply_src, *reply_dest; + struct netif *netif; + + /* Get the destination address and netif for this ICMP message. */ + LWIP_ASSERT("must provide both source and destination", src_addr != NULL); + LWIP_ASSERT("must provide both source and destination", dest_addr != NULL); + + /* Special case, as ip6_current_xxx is either NULL, or points + to a different packet than the one that expired. */ + IP6_ADDR_ZONECHECK(src_addr); + IP6_ADDR_ZONECHECK(dest_addr); + /* Swap source and destination for the reply. */ + reply_dest = src_addr; + reply_src = dest_addr; + netif = ip6_route(reply_src, reply_dest); + if (netif == NULL) { + ICMP6_STATS_INC(icmp6.rterr); + return; + } + icmp6_send_response_with_addrs_and_netif(p, code, data, type, reply_src, + reply_dest, netif); +} + +/** + * Send an ICMPv6 packet (with srd/dst address and netif given). + * + * @param p the input packet for which the response should be sent, + * p->payload pointing to the IPv6 header + * @param code Code of the ICMPv6 header + * @param data Additional 32-bit parameter in the ICMPv6 header + * @param type Type of the ICMPv6 header + * @param reply_src source address of the packet to send + * @param reply_dest destination address of the packet to send + * @param netif netif to send the packet + */ +static void +icmp6_send_response_with_addrs_and_netif(struct pbuf *p, u8_t code, u32_t data, u8_t type, + const ip6_addr_t *reply_src, const ip6_addr_t *reply_dest, struct netif *netif) +{ + struct pbuf *q; + struct icmp6_hdr *icmp6hdr; + + /* ICMPv6 header + IPv6 header + data */ + q = pbuf_alloc(PBUF_IP, sizeof(struct icmp6_hdr) + IP6_HLEN + LWIP_ICMP6_DATASIZE, + PBUF_RAM); + if (q == NULL) { + LWIP_DEBUGF(ICMP_DEBUG, ("icmp_time_exceeded: failed to allocate pbuf for ICMPv6 packet.\n")); + ICMP6_STATS_INC(icmp6.memerr); + return; + } + LWIP_ASSERT("check that first pbuf can hold icmp 6message", + (q->len >= (sizeof(struct icmp6_hdr) + IP6_HLEN + LWIP_ICMP6_DATASIZE))); + + icmp6hdr = (struct icmp6_hdr *)q->payload; + icmp6hdr->type = type; + icmp6hdr->code = code; + icmp6hdr->data = lwip_htonl(data); + + /* copy fields from original packet */ + SMEMCPY((u8_t *)q->payload + sizeof(struct icmp6_hdr), (u8_t *)p->payload, + IP6_HLEN + LWIP_ICMP6_DATASIZE); + + /* calculate checksum */ + icmp6hdr->chksum = 0; +#if CHECKSUM_GEN_ICMP6 + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_ICMP6) { + icmp6hdr->chksum = ip6_chksum_pseudo(q, IP6_NEXTH_ICMP6, q->tot_len, + reply_src, reply_dest); + } +#endif /* CHECKSUM_GEN_ICMP6 */ + + ICMP6_STATS_INC(icmp6.xmit); + ip6_output_if(q, reply_src, reply_dest, LWIP_ICMP6_HL, 0, IP6_NEXTH_ICMP6, netif); + pbuf_free(q); +} + +#endif /* LWIP_ICMP6 && LWIP_IPV6 */ diff --git a/Other/tun2socks/core/c/core/ipv6/inet6.c b/Other/tun2socks/core/c/core/ipv6/inet6.c new file mode 100644 index 0000000..d9a992c --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv6/inet6.c @@ -0,0 +1,53 @@ +/** + * @file + * + * INET v6 addresses. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV6 && LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/def.h" +#include "lwip/inet.h" + +/** This variable is initialized by the system to contain the wildcard IPv6 address. + */ +const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT; + +#endif /* LWIP_IPV6 */ diff --git a/Other/tun2socks/core/c/core/ipv6/ip6.c b/Other/tun2socks/core/c/core/ipv6/ip6.c new file mode 100644 index 0000000..bf58691 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv6/ip6.c @@ -0,0 +1,1505 @@ +/** + * @file + * + * IPv6 layer. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/def.h" +#include "lwip/mem.h" +#include "lwip/netif.h" +#include "lwip/ip.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/ip6_frag.h" +#include "lwip/icmp6.h" +#include "lwip/priv/raw_priv.h" +#include "lwip/udp.h" +#include "lwip/priv/tcp_priv.h" +#include "lwip/dhcp6.h" +#include "lwip/nd6.h" +#include "lwip/mld6.h" +#include "lwip/debug.h" +#include "lwip/stats.h" + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif + +/** + * Finds the appropriate network interface for a given IPv6 address. It tries to select + * a netif following a sequence of heuristics: + * 1) if there is only 1 netif, return it + * 2) if the destination is a zoned address, match its zone to a netif + * 3) if the either the source or destination address is a scoped address, + * match the source address's zone (if set) or address (if not) to a netif + * 4) tries to match the destination subnet to a configured address + * 5) tries to find a router-announced route + * 6) tries to match the (unscoped) source address to the netif + * 7) returns the default netif, if configured + * + * Note that each of the two given addresses may or may not be properly zoned. + * + * @param src the source IPv6 address, if known + * @param dest the destination IPv6 address for which to find the route + * @return the netif on which to send to reach dest + */ +struct netif * +ip6_route(const ip6_addr_t *src, const ip6_addr_t *dest) +{ +#if TUN2SOCKS + // go-tun2socks logic + // no routing and just use the default netif, netif_list[0], i.e., the loopif + // enable loopif by setting LWIP_HAVE_LOOPIF = 1 in lwipopts.h + return netif_list; +#endif /* TUN2SOCKS */ + +#if LWIP_SINGLE_NETIF + LWIP_UNUSED_ARG(src); + LWIP_UNUSED_ARG(dest); +#else /* LWIP_SINGLE_NETIF */ + struct netif *netif; + s8_t i; + + LWIP_ASSERT_CORE_LOCKED(); + + /* If single netif configuration, fast return. */ + if ((netif_list != NULL) && (netif_list->next == NULL)) { + if (!netif_is_up(netif_list) || !netif_is_link_up(netif_list) || + (ip6_addr_has_zone(dest) && !ip6_addr_test_zone(dest, netif_list))) { + return NULL; + } + return netif_list; + } + +#if LWIP_IPV6_SCOPES + /* Special processing for zoned destination addresses. This includes link- + * local unicast addresses and interface/link-local multicast addresses. Use + * the zone to find a matching netif. If the address is not zoned, then there + * is technically no "wrong" netif to choose, and we leave routing to other + * rules; in most cases this should be the scoped-source rule below. */ + if (ip6_addr_has_zone(dest)) { + IP6_ADDR_ZONECHECK(dest); + /* Find a netif based on the zone. For custom mappings, one zone may map + * to multiple netifs, so find one that can actually send a packet. */ + NETIF_FOREACH(netif) { + if (ip6_addr_test_zone(dest, netif) && + netif_is_up(netif) && netif_is_link_up(netif)) { + return netif; + } + } + /* No matching netif found. Do no try to route to a different netif, + * as that would be a zone violation, resulting in any packets sent to + * that netif being dropped on output. */ + return NULL; + } +#endif /* LWIP_IPV6_SCOPES */ + + /* Special processing for scoped source and destination addresses. If we get + * here, the destination address does not have a zone, so either way we need + * to look at the source address, which may or may not have a zone. If it + * does, the zone is restrictive: there is (typically) only one matching + * netif for it, and we should avoid routing to any other netif as that would + * result in guaranteed zone violations. For scoped source addresses that do + * not have a zone, use (only) a netif that has that source address locally + * assigned. This case also applies to the loopback source address, which has + * an implied link-local scope. If only the destination address is scoped + * (but, again, not zoned), we still want to use only the source address to + * determine its zone because that's most likely what the user/application + * wants, regardless of whether the source address is scoped. Finally, some + * of this story also applies if scoping is disabled altogether. */ +#if LWIP_IPV6_SCOPES + if (ip6_addr_has_scope(dest, IP6_UNKNOWN) || + ip6_addr_has_scope(src, IP6_UNICAST) || +#else /* LWIP_IPV6_SCOPES */ + if (ip6_addr_islinklocal(dest) || ip6_addr_ismulticast_iflocal(dest) || + ip6_addr_ismulticast_linklocal(dest) || ip6_addr_islinklocal(src) || +#endif /* LWIP_IPV6_SCOPES */ + ip6_addr_isloopback(src)) { +#if LWIP_IPV6_SCOPES + if (ip6_addr_has_zone(src)) { + /* Find a netif matching the source zone (relatively cheap). */ + NETIF_FOREACH(netif) { + if (netif_is_up(netif) && netif_is_link_up(netif) && + ip6_addr_test_zone(src, netif)) { + return netif; + } + } + } else +#endif /* LWIP_IPV6_SCOPES */ + { + /* Find a netif matching the source address (relatively expensive). */ + NETIF_FOREACH(netif) { + if (!netif_is_up(netif) || !netif_is_link_up(netif)) { + continue; + } + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && + ip6_addr_cmp_zoneless(src, netif_ip6_addr(netif, i))) { + return netif; + } + } + } + } + /* Again, do not use any other netif in this case, as that could result in + * zone boundary violations. */ + return NULL; + } + + /* We come here only if neither source nor destination is scoped. */ + IP6_ADDR_ZONECHECK(src); + +#ifdef LWIP_HOOK_IP6_ROUTE + netif = LWIP_HOOK_IP6_ROUTE(src, dest); + if (netif != NULL) { + return netif; + } +#endif + + /* See if the destination subnet matches a configured address. In accordance + * with RFC 5942, dynamically configured addresses do not have an implied + * local subnet, and thus should be considered /128 assignments. However, as + * such, the destination address may still match a local address, and so we + * still need to check for exact matches here. By (lwIP) policy, statically + * configured addresses do always have an implied local /64 subnet. */ + NETIF_FOREACH(netif) { + if (!netif_is_up(netif) || !netif_is_link_up(netif)) { + continue; + } + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && + ip6_addr_netcmp(dest, netif_ip6_addr(netif, i)) && + (netif_ip6_addr_isstatic(netif, i) || + ip6_addr_nethostcmp(dest, netif_ip6_addr(netif, i)))) { + return netif; + } + } + } + + /* Get the netif for a suitable router-announced route. */ + netif = nd6_find_route(dest); + if (netif != NULL) { + return netif; + } + + /* Try with the netif that matches the source address. Given the earlier rule + * for scoped source addresses, this applies to unscoped addresses only. */ + if (!ip6_addr_isany(src)) { + NETIF_FOREACH(netif) { + if (!netif_is_up(netif) || !netif_is_link_up(netif)) { + continue; + } + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && + ip6_addr_cmp(src, netif_ip6_addr(netif, i))) { + return netif; + } + } + } + } + +#if LWIP_NETIF_LOOPBACK && !LWIP_HAVE_LOOPIF + /* loopif is disabled, loopback traffic is passed through any netif */ + if (ip6_addr_isloopback(dest)) { + /* don't check for link on loopback traffic */ + if (netif_default != NULL && netif_is_up(netif_default)) { + return netif_default; + } + /* default netif is not up, just use any netif for loopback traffic */ + NETIF_FOREACH(netif) { + if (netif_is_up(netif)) { + return netif; + } + } + return NULL; + } +#endif /* LWIP_NETIF_LOOPBACK && !LWIP_HAVE_LOOPIF */ +#endif /* !LWIP_SINGLE_NETIF */ + + /* no matching netif found, use default netif, if up */ + if ((netif_default == NULL) || !netif_is_up(netif_default) || !netif_is_link_up(netif_default)) { + return NULL; + } + return netif_default; +} + +/** + * @ingroup ip6 + * Select the best IPv6 source address for a given destination IPv6 address. + * + * This implementation follows RFC 6724 Sec. 5 to the following extent: + * - Rules 1, 2, 3: fully implemented + * - Rules 4, 5, 5.5: not applicable + * - Rule 6: not implemented + * - Rule 7: not applicable + * - Rule 8: limited to "prefer /64 subnet match over non-match" + * + * For Rule 2, we deliberately deviate from RFC 6724 Sec. 3.1 by considering + * ULAs to be of smaller scope than global addresses, to avoid that a preferred + * ULA is picked over a deprecated global address when given a global address + * as destination, as that would likely result in broken two-way communication. + * + * As long as temporary addresses are not supported (as used in Rule 7), a + * proper implementation of Rule 8 would obviate the need to implement Rule 6. + * + * @param netif the netif on which to send a packet + * @param dest the destination we are trying to reach (possibly not properly + * zoned) + * @return the most suitable source address to use, or NULL if no suitable + * source address is found + */ +const ip_addr_t * +ip6_select_source_address(struct netif *netif, const ip6_addr_t *dest) +{ + const ip_addr_t *best_addr; + const ip6_addr_t *cand_addr; + s8_t dest_scope, cand_scope; + s8_t best_scope = IP6_MULTICAST_SCOPE_RESERVED; + u8_t i, cand_pref, cand_bits; + u8_t best_pref = 0; + u8_t best_bits = 0; + + /* Start by determining the scope of the given destination address. These + * tests are hopefully (roughly) in order of likeliness to match. */ + if (ip6_addr_isglobal(dest)) { + dest_scope = IP6_MULTICAST_SCOPE_GLOBAL; + } else if (ip6_addr_islinklocal(dest) || ip6_addr_isloopback(dest)) { + dest_scope = IP6_MULTICAST_SCOPE_LINK_LOCAL; + } else if (ip6_addr_isuniquelocal(dest)) { + dest_scope = IP6_MULTICAST_SCOPE_ORGANIZATION_LOCAL; + } else if (ip6_addr_ismulticast(dest)) { + dest_scope = ip6_addr_multicast_scope(dest); + } else if (ip6_addr_issitelocal(dest)) { + dest_scope = IP6_MULTICAST_SCOPE_SITE_LOCAL; + } else { + /* no match, consider scope global */ + dest_scope = IP6_MULTICAST_SCOPE_GLOBAL; + } + + best_addr = NULL; + + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + /* Consider only valid (= preferred and deprecated) addresses. */ + if (!ip6_addr_isvalid(netif_ip6_addr_state(netif, i))) { + continue; + } + /* Determine the scope of this candidate address. Same ordering idea. */ + cand_addr = netif_ip6_addr(netif, i); + if (ip6_addr_isglobal(cand_addr)) { + cand_scope = IP6_MULTICAST_SCOPE_GLOBAL; + } else if (ip6_addr_islinklocal(cand_addr)) { + cand_scope = IP6_MULTICAST_SCOPE_LINK_LOCAL; + } else if (ip6_addr_isuniquelocal(cand_addr)) { + cand_scope = IP6_MULTICAST_SCOPE_ORGANIZATION_LOCAL; + } else if (ip6_addr_issitelocal(cand_addr)) { + cand_scope = IP6_MULTICAST_SCOPE_SITE_LOCAL; + } else { + /* no match, treat as low-priority global scope */ + cand_scope = IP6_MULTICAST_SCOPE_RESERVEDF; + } + cand_pref = ip6_addr_ispreferred(netif_ip6_addr_state(netif, i)); + /* @todo compute the actual common bits, for longest matching prefix. */ + /* We cannot count on the destination address having a proper zone + * assignment, so do not compare zones in this case. */ + cand_bits = ip6_addr_netcmp_zoneless(cand_addr, dest); /* just 1 or 0 for now */ + if (cand_bits && ip6_addr_nethostcmp(cand_addr, dest)) { + return netif_ip_addr6(netif, i); /* Rule 1 */ + } + if ((best_addr == NULL) || /* no alternative yet */ + ((cand_scope < best_scope) && (cand_scope >= dest_scope)) || + ((cand_scope > best_scope) && (best_scope < dest_scope)) || /* Rule 2 */ + ((cand_scope == best_scope) && ((cand_pref > best_pref) || /* Rule 3 */ + ((cand_pref == best_pref) && (cand_bits > best_bits))))) { /* Rule 8 */ + /* We found a new "winning" candidate. */ + best_addr = netif_ip_addr6(netif, i); + best_scope = cand_scope; + best_pref = cand_pref; + best_bits = cand_bits; + } + } + + return best_addr; /* may be NULL */ +} + +#if LWIP_IPV6_FORWARD +/** + * Forwards an IPv6 packet. It finds an appropriate route for the + * packet, decrements the HL value of the packet, and outputs + * the packet on the appropriate interface. + * + * @param p the packet to forward (p->payload points to IP header) + * @param iphdr the IPv6 header of the input packet + * @param inp the netif on which this packet was received + */ +static void +ip6_forward(struct pbuf *p, struct ip6_hdr *iphdr, struct netif *inp) +{ + struct netif *netif; + + /* do not forward link-local or loopback addresses */ + if (ip6_addr_islinklocal(ip6_current_dest_addr()) || + ip6_addr_isloopback(ip6_current_dest_addr())) { + LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: not forwarding link-local address.\n")); + IP6_STATS_INC(ip6.rterr); + IP6_STATS_INC(ip6.drop); + return; + } + + /* Find network interface where to forward this IP packet to. */ + netif = ip6_route(IP6_ADDR_ANY6, ip6_current_dest_addr()); + if (netif == NULL) { + LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n", + IP6_ADDR_BLOCK1(ip6_current_dest_addr()), + IP6_ADDR_BLOCK2(ip6_current_dest_addr()), + IP6_ADDR_BLOCK3(ip6_current_dest_addr()), + IP6_ADDR_BLOCK4(ip6_current_dest_addr()), + IP6_ADDR_BLOCK5(ip6_current_dest_addr()), + IP6_ADDR_BLOCK6(ip6_current_dest_addr()), + IP6_ADDR_BLOCK7(ip6_current_dest_addr()), + IP6_ADDR_BLOCK8(ip6_current_dest_addr()))); +#if LWIP_ICMP6 + /* Don't send ICMP messages in response to ICMP messages */ + if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) { + icmp6_dest_unreach(p, ICMP6_DUR_NO_ROUTE); + } +#endif /* LWIP_ICMP6 */ + IP6_STATS_INC(ip6.rterr); + IP6_STATS_INC(ip6.drop); + return; + } +#if LWIP_IPV6_SCOPES + /* Do not forward packets with a zoned (e.g., link-local) source address + * outside of their zone. We determined the zone a bit earlier, so we know + * that the address is properly zoned here, so we can safely use has_zone. + * Also skip packets with a loopback source address (link-local implied). */ + if ((ip6_addr_has_zone(ip6_current_src_addr()) && + !ip6_addr_test_zone(ip6_current_src_addr(), netif)) || + ip6_addr_isloopback(ip6_current_src_addr())) { + LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: not forwarding packet beyond its source address zone.\n")); + IP6_STATS_INC(ip6.rterr); + IP6_STATS_INC(ip6.drop); + return; + } +#endif /* LWIP_IPV6_SCOPES */ + /* Do not forward packets onto the same network interface on which + * they arrived. */ + if (netif == inp) { + LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: not bouncing packets back on incoming interface.\n")); + IP6_STATS_INC(ip6.rterr); + IP6_STATS_INC(ip6.drop); + return; + } + + /* decrement HL */ + IP6H_HOPLIM_SET(iphdr, IP6H_HOPLIM(iphdr) - 1); + /* send ICMP6 if HL == 0 */ + if (IP6H_HOPLIM(iphdr) == 0) { +#if LWIP_ICMP6 + /* Don't send ICMP messages in response to ICMP messages */ + if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) { + icmp6_time_exceeded(p, ICMP6_TE_HL); + } +#endif /* LWIP_ICMP6 */ + IP6_STATS_INC(ip6.drop); + return; + } + + if (netif->mtu && (p->tot_len > netif->mtu)) { +#if LWIP_ICMP6 + /* Don't send ICMP messages in response to ICMP messages */ + if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) { + icmp6_packet_too_big(p, netif->mtu); + } +#endif /* LWIP_ICMP6 */ + IP6_STATS_INC(ip6.drop); + return; + } + + LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: forwarding packet to %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n", + IP6_ADDR_BLOCK1(ip6_current_dest_addr()), + IP6_ADDR_BLOCK2(ip6_current_dest_addr()), + IP6_ADDR_BLOCK3(ip6_current_dest_addr()), + IP6_ADDR_BLOCK4(ip6_current_dest_addr()), + IP6_ADDR_BLOCK5(ip6_current_dest_addr()), + IP6_ADDR_BLOCK6(ip6_current_dest_addr()), + IP6_ADDR_BLOCK7(ip6_current_dest_addr()), + IP6_ADDR_BLOCK8(ip6_current_dest_addr()))); + + /* transmit pbuf on chosen interface */ + netif->output_ip6(netif, p, ip6_current_dest_addr()); + IP6_STATS_INC(ip6.fw); + IP6_STATS_INC(ip6.xmit); + return; +} +#endif /* LWIP_IPV6_FORWARD */ + +/** Return true if the current input packet should be accepted on this netif */ +static int +ip6_input_accept(struct netif *netif) +{ +#if TUN2SOCKS + // go-tun2socks logic + // all packets are accepted by the first one, and it should be the loopif + return 1; +#endif /* TUN2SOCKS */ + + /* interface is up? */ + if (netif_is_up(netif)) { + u8_t i; + /* unicast to this interface address? address configured? */ + /* If custom scopes are used, the destination zone will be tested as + * part of the local-address comparison, but we need to test the source + * scope as well (e.g., is this interface on the same link?). */ + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && + ip6_addr_cmp(ip6_current_dest_addr(), netif_ip6_addr(netif, i)) +#if IPV6_CUSTOM_SCOPES + && (!ip6_addr_has_zone(ip6_current_src_addr()) || + ip6_addr_test_zone(ip6_current_src_addr(), netif)) +#endif /* IPV6_CUSTOM_SCOPES */ + ) { + /* accept on this netif */ + return 1; + } + } + } + return 0; +} + +/** + * This function is called by the network interface device driver when + * an IPv6 packet is received. The function does the basic checks of the + * IP header such as packet size being at least larger than the header + * size etc. If the packet was not destined for us, the packet is + * forwarded (using ip6_forward). + * + * Finally, the packet is sent to the upper layer protocol input function. + * + * @param p the received IPv6 packet (p->payload points to IPv6 header) + * @param inp the netif on which this packet was received + * @return ERR_OK if the packet was processed (could return ERR_* if it wasn't + * processed, but currently always returns ERR_OK) + */ +err_t +ip6_input(struct pbuf *p, struct netif *inp) +{ + struct ip6_hdr *ip6hdr; + struct netif *netif; + const u8_t *nexth; + u16_t hlen, hlen_tot; /* the current header length */ +#if 0 /*IP_ACCEPT_LINK_LAYER_ADDRESSING*/ + @todo + int check_ip_src=1; +#endif /* IP_ACCEPT_LINK_LAYER_ADDRESSING */ +#if LWIP_RAW + raw_input_state_t raw_status; +#endif /* LWIP_RAW */ + + LWIP_ASSERT_CORE_LOCKED(); + + IP6_STATS_INC(ip6.recv); + + /* identify the IP header */ + ip6hdr = (struct ip6_hdr *)p->payload; + if (IP6H_V(ip6hdr) != 6) { + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_WARNING, ("IPv6 packet dropped due to bad version number %"U32_F"\n", + IP6H_V(ip6hdr))); + pbuf_free(p); + IP6_STATS_INC(ip6.err); + IP6_STATS_INC(ip6.drop); + return ERR_OK; + } + +#ifdef LWIP_HOOK_IP6_INPUT + if (LWIP_HOOK_IP6_INPUT(p, inp)) { + /* the packet has been eaten */ + return ERR_OK; + } +#endif + + /* header length exceeds first pbuf length, or ip length exceeds total pbuf length? */ + if ((IP6_HLEN > p->len) || (IP6H_PLEN(ip6hdr) > (p->tot_len - IP6_HLEN))) { + if (IP6_HLEN > p->len) { + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("IPv6 header (len %"U16_F") does not fit in first pbuf (len %"U16_F"), IP packet dropped.\n", + (u16_t)IP6_HLEN, p->len)); + } + if ((IP6H_PLEN(ip6hdr) + IP6_HLEN) > p->tot_len) { + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("IPv6 (plen %"U16_F") is longer than pbuf (len %"U16_F"), IP packet dropped.\n", + (u16_t)(IP6H_PLEN(ip6hdr) + IP6_HLEN), p->tot_len)); + } + /* free (drop) packet pbufs */ + pbuf_free(p); + IP6_STATS_INC(ip6.lenerr); + IP6_STATS_INC(ip6.drop); + return ERR_OK; + } + + /* Trim pbuf. This should have been done at the netif layer, + * but we'll do it anyway just to be sure that its done. */ + pbuf_realloc(p, (u16_t)(IP6_HLEN + IP6H_PLEN(ip6hdr))); + + /* copy IP addresses to aligned ip6_addr_t */ + ip_addr_copy_from_ip6_packed(ip_data.current_iphdr_dest, ip6hdr->dest); + ip_addr_copy_from_ip6_packed(ip_data.current_iphdr_src, ip6hdr->src); + + /* Don't accept virtual IPv4 mapped IPv6 addresses. + * Don't accept multicast source addresses. */ + if (ip6_addr_isipv4mappedipv6(ip_2_ip6(&ip_data.current_iphdr_dest)) || + ip6_addr_isipv4mappedipv6(ip_2_ip6(&ip_data.current_iphdr_src)) || + ip6_addr_ismulticast(ip_2_ip6(&ip_data.current_iphdr_src))) { + /* free (drop) packet pbufs */ + pbuf_free(p); + IP6_STATS_INC(ip6.err); + IP6_STATS_INC(ip6.drop); + return ERR_OK; + } + + /* Set the appropriate zone identifier on the addresses. */ + ip6_addr_assign_zone(ip_2_ip6(&ip_data.current_iphdr_dest), IP6_UNKNOWN, inp); + ip6_addr_assign_zone(ip_2_ip6(&ip_data.current_iphdr_src), IP6_UNICAST, inp); + + /* current header pointer. */ + ip_data.current_ip6_header = ip6hdr; + + /* In netif, used in case we need to send ICMPv6 packets back. */ + ip_data.current_netif = inp; + ip_data.current_input_netif = inp; + + /* match packet against an interface, i.e. is this packet for us? */ + if (ip6_addr_ismulticast(ip6_current_dest_addr())) { + /* Always joined to multicast if-local and link-local all-nodes group. */ + if (ip6_addr_isallnodes_iflocal(ip6_current_dest_addr()) || + ip6_addr_isallnodes_linklocal(ip6_current_dest_addr())) { + netif = inp; + } +#if LWIP_IPV6_MLD + else if (mld6_lookfor_group(inp, ip6_current_dest_addr())) { + netif = inp; + } +#else /* LWIP_IPV6_MLD */ + else if (ip6_addr_issolicitednode(ip6_current_dest_addr())) { + u8_t i; + /* Filter solicited node packets when MLD is not enabled + * (for Neighbor discovery). */ + netif = NULL; + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (ip6_addr_isvalid(netif_ip6_addr_state(inp, i)) && + ip6_addr_cmp_solicitednode(ip6_current_dest_addr(), netif_ip6_addr(inp, i))) { + netif = inp; + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: solicited node packet accepted on interface %c%c\n", + netif->name[0], netif->name[1])); + break; + } + } + } +#endif /* LWIP_IPV6_MLD */ + else { + netif = NULL; + } + } else { + /* start trying with inp. if that's not acceptable, start walking the + list of configured netifs. */ + if (ip6_input_accept(inp)) { + netif = inp; + } else { + netif = NULL; +#if !IPV6_CUSTOM_SCOPES + /* Shortcut: stop looking for other interfaces if either the source or + * the destination has a scope constrained to this interface. Custom + * scopes may break the 1:1 link/interface mapping, however. */ + if (ip6_addr_islinklocal(ip6_current_dest_addr()) || + ip6_addr_islinklocal(ip6_current_src_addr())) { + goto netif_found; + } +#endif /* !IPV6_CUSTOM_SCOPES */ +#if !LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF + /* The loopback address is to be considered link-local. Packets to it + * should be dropped on other interfaces, as per RFC 4291 Sec. 2.5.3. + * Its implied scope means packets *from* the loopback address should + * not be accepted on other interfaces, either. These requirements + * cannot be implemented in the case that loopback traffic is sent + * across a non-loopback interface, however. */ + if (ip6_addr_isloopback(ip6_current_dest_addr()) || + ip6_addr_isloopback(ip6_current_src_addr())) { + goto netif_found; + } +#endif /* !LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF */ +#if !LWIP_SINGLE_NETIF + NETIF_FOREACH(netif) { + if (netif == inp) { + /* we checked that before already */ + continue; + } + if (ip6_input_accept(netif)) { + break; + } + } +#endif /* !LWIP_SINGLE_NETIF */ + } +netif_found: + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet accepted on interface %c%c\n", + netif ? netif->name[0] : 'X', netif? netif->name[1] : 'X')); + } + + /* "::" packet source address? (used in duplicate address detection) */ + if (ip6_addr_isany(ip6_current_src_addr()) && + (!ip6_addr_issolicitednode(ip6_current_dest_addr()))) { + /* packet source is not valid */ + /* free (drop) packet pbufs */ + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with src ANY_ADDRESS dropped\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + } + + /* packet not for us? */ + if (netif == NULL) { + /* packet not for us, route or discard */ + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_TRACE, ("ip6_input: packet not for us.\n")); +#if LWIP_IPV6_FORWARD + /* non-multicast packet? */ + if (!ip6_addr_ismulticast(ip6_current_dest_addr())) { + /* try to forward IP packet on (other) interfaces */ + ip6_forward(p, ip6hdr, inp); + } +#endif /* LWIP_IPV6_FORWARD */ + pbuf_free(p); + goto ip6_input_cleanup; + } + + /* current netif pointer. */ + ip_data.current_netif = netif; + + /* Save next header type. */ + nexth = &IP6H_NEXTH(ip6hdr); + + /* Init header length. */ + hlen = hlen_tot = IP6_HLEN; + + /* Move to payload. */ + pbuf_remove_header(p, IP6_HLEN); + + /* Process known option extension headers, if present. */ + while (*nexth != IP6_NEXTH_NONE) + { + switch (*nexth) { + case IP6_NEXTH_HOPBYHOP: + { + s32_t opt_offset; + struct ip6_hbh_hdr *hbh_hdr; + struct ip6_opt_hdr *opt_hdr; + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Hop-by-Hop options header\n")); + + /* Get and check the header length, while staying in packet bounds. */ + hbh_hdr = (struct ip6_hbh_hdr *)p->payload; + + /* Get next header type. */ + nexth = &IP6_HBH_NEXTH(hbh_hdr); + + /* Get the header length. */ + hlen = (u16_t)(8 * (1 + hbh_hdr->_hlen)); + + if ((p->len < 8) || (hlen > p->len)) { + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("IPv6 options header (hlen %"U16_F") does not fit in first pbuf (len %"U16_F"), IPv6 packet dropped.\n", + hlen, p->len)); + /* free (drop) packet pbufs */ + pbuf_free(p); + IP6_STATS_INC(ip6.lenerr); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + } + + hlen_tot = (u16_t)(hlen_tot + hlen); + + /* The extended option header starts right after Hop-by-Hop header. */ + opt_offset = IP6_HBH_HLEN; + while (opt_offset < hlen) + { + s32_t opt_dlen = 0; + + opt_hdr = (struct ip6_opt_hdr *)((u8_t *)hbh_hdr + opt_offset); + + switch (IP6_OPT_TYPE(opt_hdr)) { + /* @todo: process IPV6 Hop-by-Hop option data */ + case IP6_PAD1_OPTION: + /* PAD1 option doesn't have length and value field */ + opt_dlen = -1; + break; + case IP6_PADN_OPTION: + opt_dlen = IP6_OPT_DLEN(opt_hdr); + break; + case IP6_ROUTER_ALERT_OPTION: + opt_dlen = IP6_OPT_DLEN(opt_hdr); + break; + case IP6_JUMBO_OPTION: + opt_dlen = IP6_OPT_DLEN(opt_hdr); + break; + default: + /* Check 2 MSB of Hop-by-Hop header type. */ + switch (IP6_OPT_TYPE_ACTION(opt_hdr)) { + case 1: + /* Discard the packet. */ + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with invalid Hop-by-Hop option type dropped.\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + case 2: + /* Send ICMP Parameter Problem */ + icmp6_param_problem(p, ICMP6_PP_OPTION, opt_hdr); + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with invalid Hop-by-Hop option type dropped.\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + case 3: + /* Send ICMP Parameter Problem if destination address is not a multicast address */ + if (!ip6_addr_ismulticast(ip6_current_dest_addr())) { + icmp6_param_problem(p, ICMP6_PP_OPTION, opt_hdr); + } + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with invalid Hop-by-Hop option type dropped.\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + default: + /* Skip over this option. */ + opt_dlen = IP6_OPT_DLEN(opt_hdr); + break; + } + break; + } + + /* Adjust the offset to move to the next extended option header */ + opt_offset = opt_offset + IP6_OPT_HLEN + opt_dlen; + } + pbuf_remove_header(p, hlen); + break; + } + case IP6_NEXTH_DESTOPTS: + { + s32_t opt_offset; + struct ip6_dest_hdr *dest_hdr; + struct ip6_opt_hdr *opt_hdr; + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Destination options header\n")); + + dest_hdr = (struct ip6_dest_hdr *)p->payload; + + /* Get next header type. */ + nexth = &IP6_DEST_NEXTH(dest_hdr); + + /* Get the header length. */ + hlen = 8 * (1 + dest_hdr->_hlen); + if ((p->len < 8) || (hlen > p->len)) { + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("IPv6 options header (hlen %"U16_F") does not fit in first pbuf (len %"U16_F"), IPv6 packet dropped.\n", + hlen, p->len)); + /* free (drop) packet pbufs */ + pbuf_free(p); + IP6_STATS_INC(ip6.lenerr); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + } + + hlen_tot = (u16_t)(hlen_tot + hlen); + + /* The extended option header starts right after Destination header. */ + opt_offset = IP6_DEST_HLEN; + while (opt_offset < hlen) + { + s32_t opt_dlen = 0; + + opt_hdr = (struct ip6_opt_hdr *)((u8_t *)dest_hdr + opt_offset); + + switch (IP6_OPT_TYPE(opt_hdr)) + { + /* @todo: process IPV6 Destination option data */ + case IP6_PAD1_OPTION: + /* PAD1 option deosn't have length and value field */ + opt_dlen = -1; + break; + case IP6_PADN_OPTION: + opt_dlen = IP6_OPT_DLEN(opt_hdr); + break; + case IP6_ROUTER_ALERT_OPTION: + opt_dlen = IP6_OPT_DLEN(opt_hdr); + break; + case IP6_JUMBO_OPTION: + opt_dlen = IP6_OPT_DLEN(opt_hdr); + break; + case IP6_HOME_ADDRESS_OPTION: + opt_dlen = IP6_OPT_DLEN(opt_hdr); + break; + default: + /* Check 2 MSB of Destination header type. */ + switch (IP6_OPT_TYPE_ACTION(opt_hdr)) + { + case 1: + /* Discard the packet. */ + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with invalid destination option type dropped.\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + case 2: + /* Send ICMP Parameter Problem */ + icmp6_param_problem(p, ICMP6_PP_OPTION, opt_hdr); + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with invalid destination option type dropped.\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + case 3: + /* Send ICMP Parameter Problem if destination address is not a multicast address */ + if (!ip6_addr_ismulticast(ip6_current_dest_addr())) { + icmp6_param_problem(p, ICMP6_PP_OPTION, opt_hdr); + } + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with invalid destination option type dropped.\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + default: + /* Skip over this option. */ + opt_dlen = IP6_OPT_DLEN(opt_hdr); + break; + } + break; + } + + /* Adjust the offset to move to the next extended option header */ + opt_offset = opt_offset + IP6_OPT_HLEN + opt_dlen; + } + + pbuf_remove_header(p, hlen); + break; + } + case IP6_NEXTH_ROUTING: + { + struct ip6_rout_hdr *rout_hdr; + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Routing header\n")); + + rout_hdr = (struct ip6_rout_hdr *)p->payload; + + /* Get next header type. */ + nexth = &IP6_ROUT_NEXTH(rout_hdr); + + /* Get the header length. */ + hlen = 8 * (1 + rout_hdr->_hlen); + + if ((p->len < 8) || (hlen > p->len)) { + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("IPv6 options header (hlen %"U16_F") does not fit in first pbuf (len %"U16_F"), IPv6 packet dropped.\n", + hlen, p->len)); + /* free (drop) packet pbufs */ + pbuf_free(p); + IP6_STATS_INC(ip6.lenerr); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + } + + /* Skip over this header. */ + hlen_tot = (u16_t)(hlen_tot + hlen); + + /* if segment left value is 0 in routing header, ignore the option */ + if (IP6_ROUT_SEG_LEFT(rout_hdr)) { + /* The length field of routing option header must be even */ + if (rout_hdr->_hlen & 0x1) { + /* Discard and send parameter field error */ + icmp6_param_problem(p, ICMP6_PP_FIELD, &rout_hdr->_hlen); + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with invalid routing type dropped\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + } + + switch (IP6_ROUT_TYPE(rout_hdr)) + { + /* TODO: process routing by the type */ + case IP6_ROUT_TYPE2: + break; + case IP6_ROUT_RPL: + break; + default: + /* Discard unrecognized routing type and send parameter field error */ + icmp6_param_problem(p, ICMP6_PP_FIELD, &IP6_ROUT_TYPE(rout_hdr)); + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with invalid routing type dropped\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + } + } + + pbuf_remove_header(p, hlen); + break; + } + case IP6_NEXTH_FRAGMENT: + { + struct ip6_frag_hdr *frag_hdr; + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Fragment header\n")); + + frag_hdr = (struct ip6_frag_hdr *)p->payload; + + /* Get next header type. */ + nexth = &IP6_FRAG_NEXTH(frag_hdr); + + /* Fragment Header length. */ + hlen = 8; + + /* Make sure this header fits in current pbuf. */ + if (hlen > p->len) { + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("IPv6 options header (hlen %"U16_F") does not fit in first pbuf (len %"U16_F"), IPv6 packet dropped.\n", + hlen, p->len)); + /* free (drop) packet pbufs */ + pbuf_free(p); + IP6_FRAG_STATS_INC(ip6_frag.lenerr); + IP6_FRAG_STATS_INC(ip6_frag.drop); + goto ip6_input_cleanup; + } + + hlen_tot = (u16_t)(hlen_tot + hlen); + + /* check payload length is multiple of 8 octets when mbit is set */ + if (IP6_FRAG_MBIT(frag_hdr) && (IP6H_PLEN(ip6hdr) & 0x7)) { + /* ipv6 payload length is not multiple of 8 octets */ + icmp6_param_problem(p, ICMP6_PP_FIELD, LWIP_PACKED_CAST(const void *, &ip6hdr->_plen)); + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with invalid payload length dropped\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + } + + /* Offset == 0 and more_fragments == 0? */ + if ((frag_hdr->_fragment_offset & + PP_HTONS(IP6_FRAG_OFFSET_MASK | IP6_FRAG_MORE_FLAG)) == 0) { + /* This is a 1-fragment packet. Skip this header and continue. */ + pbuf_remove_header(p, hlen); + } else { +#if LWIP_IPV6_REASS + /* reassemble the packet */ + ip_data.current_ip_header_tot_len = hlen_tot; + p = ip6_reass(p); + /* packet not fully reassembled yet? */ + if (p == NULL) { + goto ip6_input_cleanup; + } + + /* Returned p point to IPv6 header. + * Update all our variables and pointers and continue. */ + ip6hdr = (struct ip6_hdr *)p->payload; + nexth = &IP6H_NEXTH(ip6hdr); + hlen = hlen_tot = IP6_HLEN; + pbuf_remove_header(p, IP6_HLEN); + +#else /* LWIP_IPV6_REASS */ + /* free (drop) packet pbufs */ + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Fragment header dropped (with LWIP_IPV6_REASS==0)\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.opterr); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; +#endif /* LWIP_IPV6_REASS */ + } + break; + } + default: + goto options_done; + } + + if (*nexth == IP6_NEXTH_HOPBYHOP) { + /* Hop-by-Hop header comes only as a first option */ + icmp6_param_problem(p, ICMP6_PP_HEADER, nexth); + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Hop-by-Hop options header dropped (only valid as a first option)\n")); + pbuf_free(p); + IP6_STATS_INC(ip6.drop); + goto ip6_input_cleanup; + } + } + +options_done: + + /* send to upper layers */ + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: \n")); + ip6_debug_print(p); + LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: p->len %"U16_F" p->tot_len %"U16_F"\n", p->len, p->tot_len)); + + ip_data.current_ip_header_tot_len = hlen_tot; + +#if LWIP_RAW + /* p points to IPv6 header again for raw_input. */ + pbuf_add_header_force(p, hlen_tot); + /* raw input did not eat the packet? */ + raw_status = raw_input(p, inp); + if (raw_status != RAW_INPUT_EATEN) + { + /* Point to payload. */ + pbuf_remove_header(p, hlen_tot); +#else /* LWIP_RAW */ + { +#endif /* LWIP_RAW */ + switch (*nexth) { + case IP6_NEXTH_NONE: + pbuf_free(p); + break; +#if LWIP_UDP + case IP6_NEXTH_UDP: +#if LWIP_UDPLITE + case IP6_NEXTH_UDPLITE: +#endif /* LWIP_UDPLITE */ + udp_input(p, inp); + break; +#endif /* LWIP_UDP */ +#if LWIP_TCP + case IP6_NEXTH_TCP: + tcp_input(p, inp); + break; +#endif /* LWIP_TCP */ +#if LWIP_ICMP6 + case IP6_NEXTH_ICMP6: + icmp6_input(p, inp); + break; +#endif /* LWIP_ICMP */ + default: +#if LWIP_RAW + if (raw_status == RAW_INPUT_DELIVERED) { + /* @todo: ipv6 mib in-delivers? */ + } else +#endif /* LWIP_RAW */ + { +#if LWIP_ICMP6 + /* p points to IPv6 header again for raw_input. */ + pbuf_add_header_force(p, hlen_tot); + /* send ICMP parameter problem unless it was a multicast or ICMPv6 */ + if ((!ip6_addr_ismulticast(ip6_current_dest_addr())) && + (IP6H_NEXTH(ip6hdr) != IP6_NEXTH_ICMP6)) { + icmp6_param_problem(p, ICMP6_PP_HEADER, nexth); + } +#endif /* LWIP_ICMP */ + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip6_input: Unsupported transport protocol %"U16_F"\n", (u16_t)IP6H_NEXTH(ip6hdr))); + IP6_STATS_INC(ip6.proterr); + IP6_STATS_INC(ip6.drop); + } + pbuf_free(p); + break; + } + } + +ip6_input_cleanup: + ip_data.current_netif = NULL; + ip_data.current_input_netif = NULL; + ip_data.current_ip6_header = NULL; + ip_data.current_ip_header_tot_len = 0; + ip6_addr_set_zero(ip6_current_src_addr()); + ip6_addr_set_zero(ip6_current_dest_addr()); + + return ERR_OK; +} + + +/** + * Sends an IPv6 packet on a network interface. This function constructs + * the IPv6 header. If the source IPv6 address is NULL, the IPv6 "ANY" address is + * used as source (usually during network startup). If the source IPv6 address it + * IP6_ADDR_ANY, the most appropriate IPv6 address of the outgoing network + * interface is filled in as source address. If the destination IPv6 address is + * LWIP_IP_HDRINCL, p is assumed to already include an IPv6 header and + * p->payload points to it instead of the data. + * + * @param p the packet to send (p->payload points to the data, e.g. next + protocol header; if dest == LWIP_IP_HDRINCL, p already includes an + IPv6 header and p->payload points to that IPv6 header) + * @param src the source IPv6 address to send from (if src == IP6_ADDR_ANY, an + * IP address of the netif is selected and used as source address. + * if src == NULL, IP6_ADDR_ANY is used as source) (src is possibly not + * properly zoned) + * @param dest the destination IPv6 address to send the packet to (possibly not + * properly zoned) + * @param hl the Hop Limit value to be set in the IPv6 header + * @param tc the Traffic Class value to be set in the IPv6 header + * @param nexth the Next Header to be set in the IPv6 header + * @param netif the netif on which to send this packet + * @return ERR_OK if the packet was sent OK + * ERR_BUF if p doesn't have enough space for IPv6/LINK headers + * returns errors returned by netif->output_ip6 + */ +err_t +ip6_output_if(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, + u8_t hl, u8_t tc, + u8_t nexth, struct netif *netif) +{ + const ip6_addr_t *src_used = src; + if (dest != LWIP_IP_HDRINCL) { + if (src != NULL && ip6_addr_isany(src)) { + src_used = ip_2_ip6(ip6_select_source_address(netif, dest)); + if ((src_used == NULL) || ip6_addr_isany(src_used)) { + /* No appropriate source address was found for this packet. */ + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip6_output: No suitable source address for packet.\n")); + IP6_STATS_INC(ip6.rterr); + return ERR_RTE; + } + } + } + return ip6_output_if_src(p, src_used, dest, hl, tc, nexth, netif); +} + +/** + * Same as ip6_output_if() but 'src' address is not replaced by netif address + * when it is 'any'. + */ +err_t +ip6_output_if_src(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, + u8_t hl, u8_t tc, + u8_t nexth, struct netif *netif) +{ + struct ip6_hdr *ip6hdr; + ip6_addr_t dest_addr; + + LWIP_ASSERT_CORE_LOCKED(); + LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p); + + /* Should the IPv6 header be generated or is it already included in p? */ + if (dest != LWIP_IP_HDRINCL) { +#if LWIP_IPV6_SCOPES + /* If the destination address is scoped but lacks a zone, add a zone now, + * based on the outgoing interface. The lower layers (e.g., nd6) absolutely + * require addresses to be properly zoned for correctness. In some cases, + * earlier attempts will have been made to add a zone to the destination, + * but this function is the only one that is called in all (other) cases, + * so we must do this here. */ + if (ip6_addr_lacks_zone(dest, IP6_UNKNOWN)) { + ip6_addr_copy(dest_addr, *dest); + ip6_addr_assign_zone(&dest_addr, IP6_UNKNOWN, netif); + dest = &dest_addr; + } +#endif /* LWIP_IPV6_SCOPES */ + + /* generate IPv6 header */ + if (pbuf_add_header(p, IP6_HLEN)) { + LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip6_output: not enough room for IPv6 header in pbuf\n")); + IP6_STATS_INC(ip6.err); + return ERR_BUF; + } + + ip6hdr = (struct ip6_hdr *)p->payload; + LWIP_ASSERT("check that first pbuf can hold struct ip6_hdr", + (p->len >= sizeof(struct ip6_hdr))); + + IP6H_HOPLIM_SET(ip6hdr, hl); + IP6H_NEXTH_SET(ip6hdr, nexth); + + /* dest cannot be NULL here */ + ip6_addr_copy_to_packed(ip6hdr->dest, *dest); + + IP6H_VTCFL_SET(ip6hdr, 6, tc, 0); + IP6H_PLEN_SET(ip6hdr, (u16_t)(p->tot_len - IP6_HLEN)); + + if (src == NULL) { + src = IP6_ADDR_ANY6; + } + /* src cannot be NULL here */ + ip6_addr_copy_to_packed(ip6hdr->src, *src); + + } else { + /* IP header already included in p */ + ip6hdr = (struct ip6_hdr *)p->payload; + ip6_addr_copy_from_packed(dest_addr, ip6hdr->dest); + ip6_addr_assign_zone(&dest_addr, IP6_UNKNOWN, netif); + dest = &dest_addr; + } + + IP6_STATS_INC(ip6.xmit); + + LWIP_DEBUGF(IP6_DEBUG, ("ip6_output_if: %c%c%"U16_F"\n", netif->name[0], netif->name[1], (u16_t)netif->num)); + ip6_debug_print(p); + +#if ENABLE_LOOPBACK + { + int i; +#if !LWIP_HAVE_LOOPIF + if (ip6_addr_isloopback(dest)) { + return netif_loop_output(netif, p); + } +#endif /* !LWIP_HAVE_LOOPIF */ + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && + ip6_addr_cmp(dest, netif_ip6_addr(netif, i))) { + /* Packet to self, enqueue it for loopback */ + LWIP_DEBUGF(IP6_DEBUG, ("netif_loop_output()\n")); + return netif_loop_output(netif, p); + } + } + } +#if LWIP_MULTICAST_TX_OPTIONS + if ((p->flags & PBUF_FLAG_MCASTLOOP) != 0) { + netif_loop_output(netif, p); + } +#endif /* LWIP_MULTICAST_TX_OPTIONS */ +#endif /* ENABLE_LOOPBACK */ +#if LWIP_IPV6_FRAG + /* don't fragment if interface has mtu set to 0 [loopif] */ + if (netif_mtu6(netif) && (p->tot_len > nd6_get_destination_mtu(dest, netif))) { + return ip6_frag(p, netif, dest); + } +#endif /* LWIP_IPV6_FRAG */ + + LWIP_DEBUGF(IP6_DEBUG, ("netif->output_ip6()\n")); + return netif->output_ip6(netif, p, dest); +} + +/** + * Simple interface to ip6_output_if. It finds the outgoing network + * interface and calls upon ip6_output_if to do the actual work. + * + * @param p the packet to send (p->payload points to the data, e.g. next + protocol header; if dest == LWIP_IP_HDRINCL, p already includes an + IPv6 header and p->payload points to that IPv6 header) + * @param src the source IPv6 address to send from (if src == IP6_ADDR_ANY, an + * IP address of the netif is selected and used as source address. + * if src == NULL, IP6_ADDR_ANY is used as source) + * @param dest the destination IPv6 address to send the packet to + * @param hl the Hop Limit value to be set in the IPv6 header + * @param tc the Traffic Class value to be set in the IPv6 header + * @param nexth the Next Header to be set in the IPv6 header + * + * @return ERR_RTE if no route is found + * see ip_output_if() for more return values + */ +err_t +ip6_output(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, + u8_t hl, u8_t tc, u8_t nexth) +{ + struct netif *netif; + struct ip6_hdr *ip6hdr; + ip6_addr_t src_addr, dest_addr; + + LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p); + + if (dest != LWIP_IP_HDRINCL) { + netif = ip6_route(src, dest); + } else { + /* IP header included in p, read addresses. */ + ip6hdr = (struct ip6_hdr *)p->payload; + ip6_addr_copy_from_packed(src_addr, ip6hdr->src); + ip6_addr_copy_from_packed(dest_addr, ip6hdr->dest); + netif = ip6_route(&src_addr, &dest_addr); + } + + if (netif == NULL) { + LWIP_DEBUGF(IP6_DEBUG, ("ip6_output: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n", + IP6_ADDR_BLOCK1(dest), + IP6_ADDR_BLOCK2(dest), + IP6_ADDR_BLOCK3(dest), + IP6_ADDR_BLOCK4(dest), + IP6_ADDR_BLOCK5(dest), + IP6_ADDR_BLOCK6(dest), + IP6_ADDR_BLOCK7(dest), + IP6_ADDR_BLOCK8(dest))); + IP6_STATS_INC(ip6.rterr); + return ERR_RTE; + } + + return ip6_output_if(p, src, dest, hl, tc, nexth, netif); +} + + +#if LWIP_NETIF_USE_HINTS +/** Like ip6_output, but takes and addr_hint pointer that is passed on to netif->addr_hint + * before calling ip6_output_if. + * + * @param p the packet to send (p->payload points to the data, e.g. next + protocol header; if dest == LWIP_IP_HDRINCL, p already includes an + IPv6 header and p->payload points to that IPv6 header) + * @param src the source IPv6 address to send from (if src == IP6_ADDR_ANY, an + * IP address of the netif is selected and used as source address. + * if src == NULL, IP6_ADDR_ANY is used as source) + * @param dest the destination IPv6 address to send the packet to + * @param hl the Hop Limit value to be set in the IPv6 header + * @param tc the Traffic Class value to be set in the IPv6 header + * @param nexth the Next Header to be set in the IPv6 header + * @param netif_hint netif output hint pointer set to netif->hint before + * calling ip_output_if() + * + * @return ERR_RTE if no route is found + * see ip_output_if() for more return values + */ +err_t +ip6_output_hinted(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, + u8_t hl, u8_t tc, u8_t nexth, struct netif_hint *netif_hint) +{ + struct netif *netif; + struct ip6_hdr *ip6hdr; + ip6_addr_t src_addr, dest_addr; + err_t err; + + LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p); + + if (dest != LWIP_IP_HDRINCL) { + netif = ip6_route(src, dest); + } else { + /* IP header included in p, read addresses. */ + ip6hdr = (struct ip6_hdr *)p->payload; + ip6_addr_copy_from_packed(src_addr, ip6hdr->src); + ip6_addr_copy_from_packed(dest_addr, ip6hdr->dest); + netif = ip6_route(&src_addr, &dest_addr); + } + + if (netif == NULL) { + LWIP_DEBUGF(IP6_DEBUG, ("ip6_output: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n", + IP6_ADDR_BLOCK1(dest), + IP6_ADDR_BLOCK2(dest), + IP6_ADDR_BLOCK3(dest), + IP6_ADDR_BLOCK4(dest), + IP6_ADDR_BLOCK5(dest), + IP6_ADDR_BLOCK6(dest), + IP6_ADDR_BLOCK7(dest), + IP6_ADDR_BLOCK8(dest))); + IP6_STATS_INC(ip6.rterr); + return ERR_RTE; + } + + NETIF_SET_HINTS(netif, netif_hint); + err = ip6_output_if(p, src, dest, hl, tc, nexth, netif); + NETIF_RESET_HINTS(netif); + + return err; +} +#endif /* LWIP_NETIF_USE_HINTS*/ + +#if LWIP_IPV6_MLD +/** + * Add a hop-by-hop options header with a router alert option and padding. + * + * Used by MLD when sending a Multicast listener report/done message. + * + * @param p the packet to which we will prepend the options header + * @param nexth the next header protocol number (e.g. IP6_NEXTH_ICMP6) + * @param value the value of the router alert option data (e.g. IP6_ROUTER_ALERT_VALUE_MLD) + * @return ERR_OK if hop-by-hop header was added, ERR_* otherwise + */ +err_t +ip6_options_add_hbh_ra(struct pbuf *p, u8_t nexth, u8_t value) +{ + u8_t *opt_data; + u32_t offset = 0; + struct ip6_hbh_hdr *hbh_hdr; + struct ip6_opt_hdr *opt_hdr; + + /* fixed 4 bytes for router alert option and 2 bytes padding */ + const u8_t hlen = (sizeof(struct ip6_opt_hdr) * 2) + IP6_ROUTER_ALERT_DLEN; + /* Move pointer to make room for hop-by-hop options header. */ + if (pbuf_add_header(p, sizeof(struct ip6_hbh_hdr) + hlen)) { + LWIP_DEBUGF(IP6_DEBUG, ("ip6_options: no space for options header\n")); + IP6_STATS_INC(ip6.err); + return ERR_BUF; + } + + /* Set fields of Hop-by-Hop header */ + hbh_hdr = (struct ip6_hbh_hdr *)p->payload; + IP6_HBH_NEXTH(hbh_hdr) = nexth; + hbh_hdr->_hlen = 0; + offset = IP6_HBH_HLEN; + + /* Set router alert options to Hop-by-Hop extended option header */ + opt_hdr = (struct ip6_opt_hdr *)((u8_t *)hbh_hdr + offset); + IP6_OPT_TYPE(opt_hdr) = IP6_ROUTER_ALERT_OPTION; + IP6_OPT_DLEN(opt_hdr) = IP6_ROUTER_ALERT_DLEN; + offset += IP6_OPT_HLEN; + + /* Set router alert option data */ + opt_data = (u8_t *)hbh_hdr + offset; + opt_data[0] = value; + opt_data[1] = 0; + offset += IP6_OPT_DLEN(opt_hdr); + + /* add 2 bytes padding to make 8 bytes Hop-by-Hop header length */ + opt_hdr = (struct ip6_opt_hdr *)((u8_t *)hbh_hdr + offset); + IP6_OPT_TYPE(opt_hdr) = IP6_PADN_OPTION; + IP6_OPT_DLEN(opt_hdr) = 0; + + return ERR_OK; +} +#endif /* LWIP_IPV6_MLD */ + +#if IP6_DEBUG +/* Print an IPv6 header by using LWIP_DEBUGF + * @param p an IPv6 packet, p->payload pointing to the IPv6 header + */ +void +ip6_debug_print(struct pbuf *p) +{ + struct ip6_hdr *ip6hdr = (struct ip6_hdr *)p->payload; + + LWIP_DEBUGF(IP6_DEBUG, ("IPv6 header:\n")); + LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(IP6_DEBUG, ("| %2"U16_F" | %3"U16_F" | %7"U32_F" | (ver, class, flow)\n", + IP6H_V(ip6hdr), + IP6H_TC(ip6hdr), + IP6H_FL(ip6hdr))); + LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(IP6_DEBUG, ("| %5"U16_F" | %3"U16_F" | %3"U16_F" | (plen, nexth, hopl)\n", + IP6H_PLEN(ip6hdr), + IP6H_NEXTH(ip6hdr), + IP6H_HOPLIM(ip6hdr))); + LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(IP6_DEBUG, ("| %4"X32_F" | %4"X32_F" | %4"X32_F" | %4"X32_F" | (src)\n", + IP6_ADDR_BLOCK1(&(ip6hdr->src)), + IP6_ADDR_BLOCK2(&(ip6hdr->src)), + IP6_ADDR_BLOCK3(&(ip6hdr->src)), + IP6_ADDR_BLOCK4(&(ip6hdr->src)))); + LWIP_DEBUGF(IP6_DEBUG, ("| %4"X32_F" | %4"X32_F" | %4"X32_F" | %4"X32_F" |\n", + IP6_ADDR_BLOCK5(&(ip6hdr->src)), + IP6_ADDR_BLOCK6(&(ip6hdr->src)), + IP6_ADDR_BLOCK7(&(ip6hdr->src)), + IP6_ADDR_BLOCK8(&(ip6hdr->src)))); + LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(IP6_DEBUG, ("| %4"X32_F" | %4"X32_F" | %4"X32_F" | %4"X32_F" | (dest)\n", + IP6_ADDR_BLOCK1(&(ip6hdr->dest)), + IP6_ADDR_BLOCK2(&(ip6hdr->dest)), + IP6_ADDR_BLOCK3(&(ip6hdr->dest)), + IP6_ADDR_BLOCK4(&(ip6hdr->dest)))); + LWIP_DEBUGF(IP6_DEBUG, ("| %4"X32_F" | %4"X32_F" | %4"X32_F" | %4"X32_F" |\n", + IP6_ADDR_BLOCK5(&(ip6hdr->dest)), + IP6_ADDR_BLOCK6(&(ip6hdr->dest)), + IP6_ADDR_BLOCK7(&(ip6hdr->dest)), + IP6_ADDR_BLOCK8(&(ip6hdr->dest)))); + LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); +} +#endif /* IP6_DEBUG */ + +#endif /* LWIP_IPV6 */ diff --git a/Other/tun2socks/core/c/core/ipv6/ip6_addr.c b/Other/tun2socks/core/c/core/ipv6/ip6_addr.c new file mode 100644 index 0000000..687c02f --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv6/ip6_addr.c @@ -0,0 +1,343 @@ +/** + * @file + * + * IPv6 addresses. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * Functions for handling IPv6 addresses. + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/ip_addr.h" +#include "lwip/def.h" + +#include + +#if LWIP_IPV4 +#include "lwip/ip4_addr.h" /* for ip6addr_aton to handle IPv4-mapped addresses */ +#endif /* LWIP_IPV4 */ + +/* used by IP6_ADDR_ANY(6) in ip6_addr.h */ +const ip_addr_t ip6_addr_any = IPADDR6_INIT(0ul, 0ul, 0ul, 0ul); + +#define lwip_xchar(i) ((char)((i) < 10 ? '0' + (i) : 'A' + (i) - 10)) + +/** + * Check whether "cp" is a valid ascii representation + * of an IPv6 address and convert to a binary address. + * Returns 1 if the address is valid, 0 if not. + * + * @param cp IPv6 address in ascii representation (e.g. "FF01::1") + * @param addr pointer to which to save the ip address in network order + * @return 1 if cp could be converted to addr, 0 on failure + */ +int +ip6addr_aton(const char *cp, ip6_addr_t *addr) +{ + u32_t addr_index, zero_blocks, current_block_index, current_block_value; + const char *s; +#if LWIP_IPV4 + int check_ipv4_mapped = 0; +#endif /* LWIP_IPV4 */ + + /* Count the number of colons, to count the number of blocks in a "::" sequence + zero_blocks may be 1 even if there are no :: sequences */ + zero_blocks = 8; + for (s = cp; *s != 0; s++) { + if (*s == ':') { + zero_blocks--; +#if LWIP_IPV4 + } else if (*s == '.') { + if ((zero_blocks == 5) ||(zero_blocks == 2)) { + check_ipv4_mapped = 1; + /* last block could be the start of an IPv4 address */ + zero_blocks--; + } else { + /* invalid format */ + return 0; + } + break; +#endif /* LWIP_IPV4 */ + } else if (!lwip_isxdigit(*s)) { + break; + } + } + + /* parse each block */ + addr_index = 0; + current_block_index = 0; + current_block_value = 0; + for (s = cp; *s != 0; s++) { + if (*s == ':') { + if (addr) { + if (current_block_index & 0x1) { + addr->addr[addr_index++] |= current_block_value; + } + else { + addr->addr[addr_index] = current_block_value << 16; + } + } + current_block_index++; +#if LWIP_IPV4 + if (check_ipv4_mapped) { + if (current_block_index == 6) { + ip4_addr_t ip4; + int ret = ip4addr_aton(s + 1, &ip4); + if (ret) { + if (addr) { + addr->addr[3] = lwip_htonl(ip4.addr); + current_block_index++; + goto fix_byte_order_and_return; + } + return 1; + } + } + } +#endif /* LWIP_IPV4 */ + current_block_value = 0; + if (current_block_index > 7) { + /* address too long! */ + return 0; + } + if (s[1] == ':') { + if (s[2] == ':') { + /* invalid format: three successive colons */ + return 0; + } + s++; + /* "::" found, set zeros */ + while (zero_blocks > 0) { + zero_blocks--; + if (current_block_index & 0x1) { + addr_index++; + } else { + if (addr) { + addr->addr[addr_index] = 0; + } + } + current_block_index++; + if (current_block_index > 7) { + /* address too long! */ + return 0; + } + } + } + } else if (lwip_isxdigit(*s)) { + /* add current digit */ + current_block_value = (current_block_value << 4) + + (lwip_isdigit(*s) ? (u32_t)(*s - '0') : + (u32_t)(10 + (lwip_islower(*s) ? *s - 'a' : *s - 'A'))); + } else { + /* unexpected digit, space? CRLF? */ + break; + } + } + + if (addr) { + if (current_block_index & 0x1) { + addr->addr[addr_index++] |= current_block_value; + } + else { + addr->addr[addr_index] = current_block_value << 16; + } +#if LWIP_IPV4 +fix_byte_order_and_return: +#endif + /* convert to network byte order. */ + for (addr_index = 0; addr_index < 4; addr_index++) { + addr->addr[addr_index] = lwip_htonl(addr->addr[addr_index]); + } + + ip6_addr_clear_zone(addr); + } + + if (current_block_index != 7) { + return 0; + } + + return 1; +} + +/** + * Convert numeric IPv6 address into ASCII representation. + * returns ptr to static buffer; not reentrant! + * + * @param addr ip6 address in network order to convert + * @return pointer to a global static (!) buffer that holds the ASCII + * representation of addr + */ +char * +ip6addr_ntoa(const ip6_addr_t *addr) +{ + static char str[40]; + return ip6addr_ntoa_r(addr, str, 40); +} + +/** + * Same as ipaddr_ntoa, but reentrant since a user-supplied buffer is used. + * + * @param addr ip6 address in network order to convert + * @param buf target buffer where the string is stored + * @param buflen length of buf + * @return either pointer to buf which now holds the ASCII + * representation of addr or NULL if buf was too small + */ +char * +ip6addr_ntoa_r(const ip6_addr_t *addr, char *buf, int buflen) +{ + u32_t current_block_index, current_block_value, next_block_value; + s32_t i; + u8_t zero_flag, empty_block_flag; + +#if LWIP_IPV4 + if (ip6_addr_isipv4mappedipv6(addr)) { + /* This is an IPv4 mapped address */ + ip4_addr_t addr4; + char *ret; +#define IP4MAPPED_HEADER "::FFFF:" + char *buf_ip4 = buf + sizeof(IP4MAPPED_HEADER) - 1; + int buflen_ip4 = buflen - sizeof(IP4MAPPED_HEADER) + 1; + if (buflen < (int)sizeof(IP4MAPPED_HEADER)) { + return NULL; + } + memcpy(buf, IP4MAPPED_HEADER, sizeof(IP4MAPPED_HEADER)); + addr4.addr = addr->addr[3]; + ret = ip4addr_ntoa_r(&addr4, buf_ip4, buflen_ip4); + if (ret != buf_ip4) { + return NULL; + } + return buf; + } +#endif /* LWIP_IPV4 */ + i = 0; + empty_block_flag = 0; /* used to indicate a zero chain for "::' */ + + for (current_block_index = 0; current_block_index < 8; current_block_index++) { + /* get the current 16-bit block */ + current_block_value = lwip_htonl(addr->addr[current_block_index >> 1]); + if ((current_block_index & 0x1) == 0) { + current_block_value = current_block_value >> 16; + } + current_block_value &= 0xffff; + + /* Check for empty block. */ + if (current_block_value == 0) { + if (current_block_index == 7 && empty_block_flag == 1) { + /* special case, we must render a ':' for the last block. */ + buf[i++] = ':'; + if (i >= buflen) { + return NULL; + } + break; + } + if (empty_block_flag == 0) { + /* generate empty block "::", but only if more than one contiguous zero block, + * according to current formatting suggestions RFC 5952. */ + next_block_value = lwip_htonl(addr->addr[(current_block_index + 1) >> 1]); + if ((current_block_index & 0x1) == 0x01) { + next_block_value = next_block_value >> 16; + } + next_block_value &= 0xffff; + if (next_block_value == 0) { + empty_block_flag = 1; + buf[i++] = ':'; + if (i >= buflen) { + return NULL; + } + continue; /* move on to next block. */ + } + } else if (empty_block_flag == 1) { + /* move on to next block. */ + continue; + } + } else if (empty_block_flag == 1) { + /* Set this flag value so we don't produce multiple empty blocks. */ + empty_block_flag = 2; + } + + if (current_block_index > 0) { + buf[i++] = ':'; + if (i >= buflen) { + return NULL; + } + } + + if ((current_block_value & 0xf000) == 0) { + zero_flag = 1; + } else { + buf[i++] = lwip_xchar(((current_block_value & 0xf000) >> 12)); + zero_flag = 0; + if (i >= buflen) { + return NULL; + } + } + + if (((current_block_value & 0xf00) == 0) && (zero_flag)) { + /* do nothing */ + } else { + buf[i++] = lwip_xchar(((current_block_value & 0xf00) >> 8)); + zero_flag = 0; + if (i >= buflen) { + return NULL; + } + } + + if (((current_block_value & 0xf0) == 0) && (zero_flag)) { + /* do nothing */ + } + else { + buf[i++] = lwip_xchar(((current_block_value & 0xf0) >> 4)); + zero_flag = 0; + if (i >= buflen) { + return NULL; + } + } + + buf[i++] = lwip_xchar((current_block_value & 0xf)); + if (i >= buflen) { + return NULL; + } + } + + buf[i] = 0; + + return buf; +} + +#endif /* LWIP_IPV6 */ diff --git a/Other/tun2socks/core/c/core/ipv6/ip6_frag.c b/Other/tun2socks/core/c/core/ipv6/ip6_frag.c new file mode 100644 index 0000000..d6c5d22 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv6/ip6_frag.c @@ -0,0 +1,862 @@ +/** + * @file + * + * IPv6 fragmentation and reassembly. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#include "lwip/opt.h" +#include "lwip/ip6_frag.h" +#include "lwip/ip6.h" +#include "lwip/icmp6.h" +#include "lwip/nd6.h" +#include "lwip/ip.h" + +#include "lwip/pbuf.h" +#include "lwip/memp.h" +#include "lwip/stats.h" + +#include + +#if LWIP_IPV6 && LWIP_IPV6_REASS /* don't build if not configured for use in lwipopts.h */ + + +/** Setting this to 0, you can turn off checking the fragments for overlapping + * regions. The code gets a little smaller. Only use this if you know that + * overlapping won't occur on your network! */ +#ifndef IP_REASS_CHECK_OVERLAP +#define IP_REASS_CHECK_OVERLAP 1 +#endif /* IP_REASS_CHECK_OVERLAP */ + +/** Set to 0 to prevent freeing the oldest datagram when the reassembly buffer is + * full (IP_REASS_MAX_PBUFS pbufs are enqueued). The code gets a little smaller. + * Datagrams will be freed by timeout only. Especially useful when MEMP_NUM_REASSDATA + * is set to 1, so one datagram can be reassembled at a time, only. */ +#ifndef IP_REASS_FREE_OLDEST +#define IP_REASS_FREE_OLDEST 1 +#endif /* IP_REASS_FREE_OLDEST */ + +#if IPV6_FRAG_COPYHEADER +/* The number of bytes we need to "borrow" from (i.e., overwrite in) the header + * that precedes the fragment header for reassembly pruposes. */ +#define IPV6_FRAG_REQROOM ((s16_t)(sizeof(struct ip6_reass_helper) - IP6_FRAG_HLEN)) +#endif + +#define IP_REASS_FLAG_LASTFRAG 0x01 + +/** This is a helper struct which holds the starting + * offset and the ending offset of this fragment to + * easily chain the fragments. + * It has the same packing requirements as the IPv6 header, since it replaces + * the Fragment Header in memory in incoming fragments to keep + * track of the various fragments. + */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip6_reass_helper { + PACK_STRUCT_FIELD(struct pbuf *next_pbuf); + PACK_STRUCT_FIELD(u16_t start); + PACK_STRUCT_FIELD(u16_t end); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/* static variables */ +static struct ip6_reassdata *reassdatagrams; +static u16_t ip6_reass_pbufcount; + +/* Forward declarations. */ +static void ip6_reass_free_complete_datagram(struct ip6_reassdata *ipr); +#if IP_REASS_FREE_OLDEST +static void ip6_reass_remove_oldest_datagram(struct ip6_reassdata *ipr, int pbufs_needed); +#endif /* IP_REASS_FREE_OLDEST */ + +void +ip6_reass_tmr(void) +{ + struct ip6_reassdata *r, *tmp; + +#if !IPV6_FRAG_COPYHEADER + LWIP_ASSERT("sizeof(struct ip6_reass_helper) <= IP6_FRAG_HLEN, set IPV6_FRAG_COPYHEADER to 1", + sizeof(struct ip6_reass_helper) <= IP6_FRAG_HLEN); +#endif /* !IPV6_FRAG_COPYHEADER */ + + r = reassdatagrams; + while (r != NULL) { + /* Decrement the timer. Once it reaches 0, + * clean up the incomplete fragment assembly */ + if (r->timer > 0) { + r->timer--; + r = r->next; + } else { + /* reassembly timed out */ + tmp = r; + /* get the next pointer before freeing */ + r = r->next; + /* free the helper struct and all enqueued pbufs */ + ip6_reass_free_complete_datagram(tmp); + } + } +} + +/** + * Free a datagram (struct ip6_reassdata) and all its pbufs. + * Updates the total count of enqueued pbufs (ip6_reass_pbufcount), + * sends an ICMP time exceeded packet. + * + * @param ipr datagram to free + */ +static void +ip6_reass_free_complete_datagram(struct ip6_reassdata *ipr) +{ + struct ip6_reassdata *prev; + u16_t pbufs_freed = 0; + u16_t clen; + struct pbuf *p; + struct ip6_reass_helper *iprh; + +#if LWIP_ICMP6 + iprh = (struct ip6_reass_helper *)ipr->p->payload; + if (iprh->start == 0) { + /* The first fragment was received, send ICMP time exceeded. */ + /* First, de-queue the first pbuf from r->p. */ + p = ipr->p; + ipr->p = iprh->next_pbuf; + /* Restore the part that we've overwritten with our helper structure, or we + * might send garbage (and disclose a pointer) in the ICMPv6 reply. */ + MEMCPY(p->payload, ipr->orig_hdr, sizeof(iprh)); + /* Then, move back to the original ipv6 header (we are now pointing to Fragment header). + This cannot fail since we already checked when receiving this fragment. */ + if (pbuf_header_force(p, (s16_t)((u8_t*)p->payload - (u8_t*)ipr->iphdr))) { + LWIP_ASSERT("ip6_reass_free: moving p->payload to ip6 header failed\n", 0); + } + else { + /* Reconstruct the zoned source and destination addresses, so that we do + * not end up sending the ICMP response over the wrong link. */ + ip6_addr_t src_addr, dest_addr; + ip6_addr_copy_from_packed(src_addr, IPV6_FRAG_SRC(ipr)); + ip6_addr_set_zone(&src_addr, ipr->src_zone); + ip6_addr_copy_from_packed(dest_addr, IPV6_FRAG_DEST(ipr)); + ip6_addr_set_zone(&dest_addr, ipr->dest_zone); + /* Send the actual ICMP response. */ + icmp6_time_exceeded_with_addrs(p, ICMP6_TE_FRAG, &src_addr, &dest_addr); + } + clen = pbuf_clen(p); + LWIP_ASSERT("pbufs_freed + clen <= 0xffff", pbufs_freed + clen <= 0xffff); + pbufs_freed = (u16_t)(pbufs_freed + clen); + pbuf_free(p); + } +#endif /* LWIP_ICMP6 */ + + /* First, free all received pbufs. The individual pbufs need to be released + separately as they have not yet been chained */ + p = ipr->p; + while (p != NULL) { + struct pbuf *pcur; + iprh = (struct ip6_reass_helper *)p->payload; + pcur = p; + /* get the next pointer before freeing */ + p = iprh->next_pbuf; + clen = pbuf_clen(pcur); + LWIP_ASSERT("pbufs_freed + clen <= 0xffff", pbufs_freed + clen <= 0xffff); + pbufs_freed = (u16_t)(pbufs_freed + clen); + pbuf_free(pcur); + } + + /* Then, unchain the struct ip6_reassdata from the list and free it. */ + if (ipr == reassdatagrams) { + reassdatagrams = ipr->next; + } else { + prev = reassdatagrams; + while (prev != NULL) { + if (prev->next == ipr) { + break; + } + prev = prev->next; + } + if (prev != NULL) { + prev->next = ipr->next; + } + } + memp_free(MEMP_IP6_REASSDATA, ipr); + + /* Finally, update number of pbufs in reassembly queue */ + LWIP_ASSERT("ip_reass_pbufcount >= clen", ip6_reass_pbufcount >= pbufs_freed); + ip6_reass_pbufcount = (u16_t)(ip6_reass_pbufcount - pbufs_freed); +} + +#if IP_REASS_FREE_OLDEST +/** + * Free the oldest datagram to make room for enqueueing new fragments. + * The datagram ipr is not freed! + * + * @param ipr ip6_reassdata for the current fragment + * @param pbufs_needed number of pbufs needed to enqueue + * (used for freeing other datagrams if not enough space) + */ +static void +ip6_reass_remove_oldest_datagram(struct ip6_reassdata *ipr, int pbufs_needed) +{ + struct ip6_reassdata *r, *oldest; + + /* Free datagrams until being allowed to enqueue 'pbufs_needed' pbufs, + * but don't free the current datagram! */ + do { + r = oldest = reassdatagrams; + while (r != NULL) { + if (r != ipr) { + if (r->timer <= oldest->timer) { + /* older than the previous oldest */ + oldest = r; + } + } + r = r->next; + } + if (oldest == ipr) { + /* nothing to free, ipr is the only element on the list */ + return; + } + if (oldest != NULL) { + ip6_reass_free_complete_datagram(oldest); + } + } while (((ip6_reass_pbufcount + pbufs_needed) > IP_REASS_MAX_PBUFS) && (reassdatagrams != NULL)); +} +#endif /* IP_REASS_FREE_OLDEST */ + +/** + * Reassembles incoming IPv6 fragments into an IPv6 datagram. + * + * @param p points to the IPv6 Fragment Header + * @return NULL if reassembly is incomplete, pbuf pointing to + * IPv6 Header if reassembly is complete + */ +struct pbuf * +ip6_reass(struct pbuf *p) +{ + struct ip6_reassdata *ipr, *ipr_prev; + struct ip6_reass_helper *iprh, *iprh_tmp, *iprh_prev=NULL; + struct ip6_frag_hdr *frag_hdr; + u16_t offset, len, start, end; + ptrdiff_t hdrdiff; + u16_t clen; + u8_t valid = 1; + struct pbuf *q, *next_pbuf; + + IP6_FRAG_STATS_INC(ip6_frag.recv); + + /* ip6_frag_hdr must be in the first pbuf, not chained. Checked by caller. */ + LWIP_ASSERT("IPv6 fragment header does not fit in first pbuf", + p->len >= sizeof(struct ip6_frag_hdr)); + + frag_hdr = (struct ip6_frag_hdr *) p->payload; + + clen = pbuf_clen(p); + + offset = lwip_ntohs(frag_hdr->_fragment_offset); + + /* Calculate fragment length from IPv6 payload length. + * Adjust for headers before Fragment Header. + * And finally adjust by Fragment Header length. */ + len = lwip_ntohs(ip6_current_header()->_plen); + hdrdiff = (u8_t*)p->payload - (const u8_t*)ip6_current_header(); + LWIP_ASSERT("not a valid pbuf (ip6_input check missing?)", hdrdiff <= 0xFFFF); + LWIP_ASSERT("not a valid pbuf (ip6_input check missing?)", hdrdiff >= IP6_HLEN); + hdrdiff -= IP6_HLEN; + hdrdiff += IP6_FRAG_HLEN; + if (hdrdiff > len) { + IP6_FRAG_STATS_INC(ip6_frag.proterr); + goto nullreturn; + } + len = (u16_t)(len - hdrdiff); + start = (offset & IP6_FRAG_OFFSET_MASK); + if (start > (0xFFFF - len)) { + /* u16_t overflow, cannot handle this */ + IP6_FRAG_STATS_INC(ip6_frag.proterr); + goto nullreturn; + } + + /* Look for the datagram the fragment belongs to in the current datagram queue, + * remembering the previous in the queue for later dequeueing. */ + for (ipr = reassdatagrams, ipr_prev = NULL; ipr != NULL; ipr = ipr->next) { + /* Check if the incoming fragment matches the one currently present + in the reassembly buffer. If so, we proceed with copying the + fragment into the buffer. */ + if ((frag_hdr->_identification == ipr->identification) && + ip6_addr_cmp_packed(ip6_current_src_addr(), &(IPV6_FRAG_SRC(ipr)), ipr->src_zone) && + ip6_addr_cmp_packed(ip6_current_dest_addr(), &(IPV6_FRAG_DEST(ipr)), ipr->dest_zone)) { + IP6_FRAG_STATS_INC(ip6_frag.cachehit); + break; + } + ipr_prev = ipr; + } + + if (ipr == NULL) { + /* Enqueue a new datagram into the datagram queue */ + ipr = (struct ip6_reassdata *)memp_malloc(MEMP_IP6_REASSDATA); + if (ipr == NULL) { +#if IP_REASS_FREE_OLDEST + /* Make room and try again. */ + ip6_reass_remove_oldest_datagram(ipr, clen); + ipr = (struct ip6_reassdata *)memp_malloc(MEMP_IP6_REASSDATA); + if (ipr != NULL) { + /* re-search ipr_prev since it might have been removed */ + for (ipr_prev = reassdatagrams; ipr_prev != NULL; ipr_prev = ipr_prev->next) { + if (ipr_prev->next == ipr) { + break; + } + } + } else +#endif /* IP_REASS_FREE_OLDEST */ + { + IP6_FRAG_STATS_INC(ip6_frag.memerr); + goto nullreturn; + } + } + + memset(ipr, 0, sizeof(struct ip6_reassdata)); + ipr->timer = IPV6_REASS_MAXAGE; + + /* enqueue the new structure to the front of the list */ + ipr->next = reassdatagrams; + reassdatagrams = ipr; + + /* Use the current IPv6 header for src/dest address reference. + * Eventually, we will replace it when we get the first fragment + * (it might be this one, in any case, it is done later). */ + /* need to use the none-const pointer here: */ + ipr->iphdr = ip_data.current_ip6_header; +#if IPV6_FRAG_COPYHEADER + MEMCPY(&ipr->src, &ip6_current_header()->src, sizeof(ipr->src)); + MEMCPY(&ipr->dest, &ip6_current_header()->dest, sizeof(ipr->dest)); +#endif /* IPV6_FRAG_COPYHEADER */ +#if LWIP_IPV6_SCOPES + /* Also store the address zone information. + * @todo It is possible that due to netif destruction and recreation, the + * stored zones end up resolving to a different interface. In that case, we + * risk sending a "time exceeded" ICMP response over the wrong link. + * Ideally, netif destruction would clean up matching pending reassembly + * structures, but custom zone mappings would make that non-trivial. */ + ipr->src_zone = ip6_addr_zone(ip6_current_src_addr()); + ipr->dest_zone = ip6_addr_zone(ip6_current_dest_addr()); +#endif /* LWIP_IPV6_SCOPES */ + /* copy the fragmented packet id. */ + ipr->identification = frag_hdr->_identification; + + /* copy the nexth field */ + ipr->nexth = frag_hdr->_nexth; + } + + /* Check if we are allowed to enqueue more datagrams. */ + if ((ip6_reass_pbufcount + clen) > IP_REASS_MAX_PBUFS) { +#if IP_REASS_FREE_OLDEST + ip6_reass_remove_oldest_datagram(ipr, clen); + if ((ip6_reass_pbufcount + clen) <= IP_REASS_MAX_PBUFS) { + /* re-search ipr_prev since it might have been removed */ + for (ipr_prev = reassdatagrams; ipr_prev != NULL; ipr_prev = ipr_prev->next) { + if (ipr_prev->next == ipr) { + break; + } + } + } else +#endif /* IP_REASS_FREE_OLDEST */ + { + /* @todo: send ICMPv6 time exceeded here? */ + /* drop this pbuf */ + IP6_FRAG_STATS_INC(ip6_frag.memerr); + goto nullreturn; + } + } + + /* Overwrite Fragment Header with our own helper struct. */ +#if IPV6_FRAG_COPYHEADER + if (IPV6_FRAG_REQROOM > 0) { + /* Make room for struct ip6_reass_helper (only required if sizeof(void*) > 4). + This cannot fail since we already checked when receiving this fragment. */ + u8_t hdrerr = pbuf_header_force(p, IPV6_FRAG_REQROOM); + LWIP_UNUSED_ARG(hdrerr); /* in case of LWIP_NOASSERT */ + LWIP_ASSERT("no room for struct ip6_reass_helper", hdrerr == 0); + } +#else /* IPV6_FRAG_COPYHEADER */ + LWIP_ASSERT("sizeof(struct ip6_reass_helper) <= IP6_FRAG_HLEN, set IPV6_FRAG_COPYHEADER to 1", + sizeof(struct ip6_reass_helper) <= IP6_FRAG_HLEN); +#endif /* IPV6_FRAG_COPYHEADER */ + + /* Prepare the pointer to the helper structure, and its initial values. + * Do not yet write to the structure itself, as we still have to make a + * backup of the original data, and we should not do that until we know for + * sure that we are going to add this packet to the list. */ + iprh = (struct ip6_reass_helper *)p->payload; + next_pbuf = NULL; + end = (u16_t)(start + len); + + /* find the right place to insert this pbuf */ + /* Iterate through until we either get to the end of the list (append), + * or we find on with a larger offset (insert). */ + for (q = ipr->p; q != NULL;) { + iprh_tmp = (struct ip6_reass_helper*)q->payload; + if (start < iprh_tmp->start) { +#if IP_REASS_CHECK_OVERLAP + if (end > iprh_tmp->start) { + /* fragment overlaps with following, throw away */ + IP6_FRAG_STATS_INC(ip6_frag.proterr); + goto nullreturn; + } + if (iprh_prev != NULL) { + if (start < iprh_prev->end) { + /* fragment overlaps with previous, throw away */ + IP6_FRAG_STATS_INC(ip6_frag.proterr); + goto nullreturn; + } + } +#endif /* IP_REASS_CHECK_OVERLAP */ + /* the new pbuf should be inserted before this */ + next_pbuf = q; + if (iprh_prev != NULL) { + /* not the fragment with the lowest offset */ + iprh_prev->next_pbuf = p; + } else { + /* fragment with the lowest offset */ + ipr->p = p; + } + break; + } else if (start == iprh_tmp->start) { + /* received the same datagram twice: no need to keep the datagram */ + goto nullreturn; +#if IP_REASS_CHECK_OVERLAP + } else if (start < iprh_tmp->end) { + /* overlap: no need to keep the new datagram */ + IP6_FRAG_STATS_INC(ip6_frag.proterr); + goto nullreturn; +#endif /* IP_REASS_CHECK_OVERLAP */ + } else { + /* Check if the fragments received so far have no gaps. */ + if (iprh_prev != NULL) { + if (iprh_prev->end != iprh_tmp->start) { + /* There is a fragment missing between the current + * and the previous fragment */ + valid = 0; + } + } + } + q = iprh_tmp->next_pbuf; + iprh_prev = iprh_tmp; + } + + /* If q is NULL, then we made it to the end of the list. Determine what to do now */ + if (q == NULL) { + if (iprh_prev != NULL) { + /* this is (for now), the fragment with the highest offset: + * chain it to the last fragment */ +#if IP_REASS_CHECK_OVERLAP + LWIP_ASSERT("check fragments don't overlap", iprh_prev->end <= start); +#endif /* IP_REASS_CHECK_OVERLAP */ + iprh_prev->next_pbuf = p; + if (iprh_prev->end != start) { + valid = 0; + } + } else { +#if IP_REASS_CHECK_OVERLAP + LWIP_ASSERT("no previous fragment, this must be the first fragment!", + ipr->p == NULL); +#endif /* IP_REASS_CHECK_OVERLAP */ + /* this is the first fragment we ever received for this ip datagram */ + ipr->p = p; + } + } + + /* Track the current number of pbufs current 'in-flight', in order to limit + the number of fragments that may be enqueued at any one time */ + ip6_reass_pbufcount = (u16_t)(ip6_reass_pbufcount + clen); + + /* Remember IPv6 header if this is the first fragment. */ + if (start == 0) { + /* need to use the none-const pointer here: */ + ipr->iphdr = ip_data.current_ip6_header; + /* Make a backup of the part of the packet data that we are about to + * overwrite, so that we can restore the original later. */ + MEMCPY(ipr->orig_hdr, p->payload, sizeof(*iprh)); + /* For IPV6_FRAG_COPYHEADER there is no need to copy src/dst again, as they + * will be the same as they were. With LWIP_IPV6_SCOPES, the same applies + * to the source/destination zones. */ + } + /* Only after the backup do we get to fill in the actual helper structure. */ + iprh->next_pbuf = next_pbuf; + iprh->start = start; + iprh->end = end; + + /* If this is the last fragment, calculate total packet length. */ + if ((offset & IP6_FRAG_MORE_FLAG) == 0) { + ipr->datagram_len = iprh->end; + } + + /* Additional validity tests: we have received first and last fragment. */ + iprh_tmp = (struct ip6_reass_helper*)ipr->p->payload; + if (iprh_tmp->start != 0) { + valid = 0; + } + if (ipr->datagram_len == 0) { + valid = 0; + } + + /* Final validity test: no gaps between current and last fragment. */ + iprh_prev = iprh; + q = iprh->next_pbuf; + while ((q != NULL) && valid) { + iprh = (struct ip6_reass_helper*)q->payload; + if (iprh_prev->end != iprh->start) { + valid = 0; + break; + } + iprh_prev = iprh; + q = iprh->next_pbuf; + } + + if (valid) { + /* All fragments have been received */ + struct ip6_hdr* iphdr_ptr; + + /* chain together the pbufs contained within the ip6_reassdata list. */ + iprh = (struct ip6_reass_helper*) ipr->p->payload; + while (iprh != NULL) { + next_pbuf = iprh->next_pbuf; + if (next_pbuf != NULL) { + /* Save next helper struct (will be hidden in next step). */ + iprh_tmp = (struct ip6_reass_helper*)next_pbuf->payload; + + /* hide the fragment header for every succeeding fragment */ + pbuf_remove_header(next_pbuf, IP6_FRAG_HLEN); +#if IPV6_FRAG_COPYHEADER + if (IPV6_FRAG_REQROOM > 0) { + /* hide the extra bytes borrowed from ip6_hdr for struct ip6_reass_helper */ + u8_t hdrerr = pbuf_remove_header(next_pbuf, IPV6_FRAG_REQROOM); + LWIP_UNUSED_ARG(hdrerr); /* in case of LWIP_NOASSERT */ + LWIP_ASSERT("no room for struct ip6_reass_helper", hdrerr == 0); + } +#endif + pbuf_cat(ipr->p, next_pbuf); + } + else { + iprh_tmp = NULL; + } + + iprh = iprh_tmp; + } + + /* Get the first pbuf. */ + p = ipr->p; + +#if IPV6_FRAG_COPYHEADER + if (IPV6_FRAG_REQROOM > 0) { + u8_t hdrerr; + /* Restore (only) the bytes that we overwrote beyond the fragment header. + * Those bytes may belong to either the IPv6 header or an extension + * header placed before the fragment header. */ + MEMCPY(p->payload, ipr->orig_hdr, IPV6_FRAG_REQROOM); + /* get back room for struct ip6_reass_helper (only required if sizeof(void*) > 4) */ + hdrerr = pbuf_remove_header(p, IPV6_FRAG_REQROOM); + LWIP_UNUSED_ARG(hdrerr); /* in case of LWIP_NOASSERT */ + LWIP_ASSERT("no room for struct ip6_reass_helper", hdrerr == 0); + } +#endif + + /* We need to get rid of the fragment header itself, which is somewhere in + * the middle of the packet (but still in the first pbuf of the chain). + * Getting rid of the header is required by RFC 2460 Sec. 4.5 and necessary + * in order to be able to reassemble packets that are close to full size + * (i.e., around 65535 bytes). We simply move up all the headers before the + * fragment header, including the IPv6 header, and adjust the payload start + * accordingly. This works because all these headers are in the first pbuf + * of the chain, and because the caller adjusts all its pointers on + * successful reassembly. */ + MEMMOVE((u8_t*)ipr->iphdr + sizeof(struct ip6_frag_hdr), ipr->iphdr, + (size_t)((u8_t*)p->payload - (u8_t*)ipr->iphdr)); + + /* This is where the IPv6 header is now. */ + iphdr_ptr = (struct ip6_hdr*)((u8_t*)ipr->iphdr + + sizeof(struct ip6_frag_hdr)); + + /* Adjust datagram length by adding header lengths. */ + ipr->datagram_len = (u16_t)(ipr->datagram_len + ((u8_t*)p->payload - (u8_t*)iphdr_ptr) + - IP6_HLEN); + + /* Set payload length in ip header. */ + iphdr_ptr->_plen = lwip_htons(ipr->datagram_len); + + /* With the fragment header gone, we now need to adjust the next-header + * field of whatever header was originally before it. Since the packet made + * it through the original header processing routines at least up to the + * fragment header, we do not need any further sanity checks here. */ + if (IP6H_NEXTH(iphdr_ptr) == IP6_NEXTH_FRAGMENT) { + iphdr_ptr->_nexth = ipr->nexth; + } else { + u8_t *ptr = (u8_t *)iphdr_ptr + IP6_HLEN; + while (*ptr != IP6_NEXTH_FRAGMENT) { + ptr += 8 * (1 + ptr[1]); + } + *ptr = ipr->nexth; + } + + /* release the resources allocated for the fragment queue entry */ + if (reassdatagrams == ipr) { + /* it was the first in the list */ + reassdatagrams = ipr->next; + } else { + /* it wasn't the first, so it must have a valid 'prev' */ + LWIP_ASSERT("sanity check linked list", ipr_prev != NULL); + ipr_prev->next = ipr->next; + } + memp_free(MEMP_IP6_REASSDATA, ipr); + + /* adjust the number of pbufs currently queued for reassembly. */ + clen = pbuf_clen(p); + LWIP_ASSERT("ip6_reass_pbufcount >= clen", ip6_reass_pbufcount >= clen); + ip6_reass_pbufcount = (u16_t)(ip6_reass_pbufcount - clen); + + /* Move pbuf back to IPv6 header. This should never fail. */ + if (pbuf_header_force(p, (s16_t)((u8_t*)p->payload - (u8_t*)iphdr_ptr))) { + LWIP_ASSERT("ip6_reass: moving p->payload to ip6 header failed\n", 0); + pbuf_free(p); + return NULL; + } + + /* Return the pbuf chain */ + return p; + } + /* the datagram is not (yet?) reassembled completely */ + return NULL; + +nullreturn: + IP6_FRAG_STATS_INC(ip6_frag.drop); + pbuf_free(p); + return NULL; +} + +#endif /* LWIP_IPV6 && LWIP_IPV6_REASS */ + +#if LWIP_IPV6 && LWIP_IPV6_FRAG + +#if !LWIP_NETIF_TX_SINGLE_PBUF +/** Allocate a new struct pbuf_custom_ref */ +static struct pbuf_custom_ref* +ip6_frag_alloc_pbuf_custom_ref(void) +{ + return (struct pbuf_custom_ref*)memp_malloc(MEMP_FRAG_PBUF); +} + +/** Free a struct pbuf_custom_ref */ +static void +ip6_frag_free_pbuf_custom_ref(struct pbuf_custom_ref* p) +{ + LWIP_ASSERT("p != NULL", p != NULL); + memp_free(MEMP_FRAG_PBUF, p); +} + +/** Free-callback function to free a 'struct pbuf_custom_ref', called by + * pbuf_free. */ +static void +ip6_frag_free_pbuf_custom(struct pbuf *p) +{ + struct pbuf_custom_ref *pcr = (struct pbuf_custom_ref*)p; + LWIP_ASSERT("pcr != NULL", pcr != NULL); + LWIP_ASSERT("pcr == p", (void*)pcr == (void*)p); + if (pcr->original != NULL) { + pbuf_free(pcr->original); + } + ip6_frag_free_pbuf_custom_ref(pcr); +} +#endif /* !LWIP_NETIF_TX_SINGLE_PBUF */ + +/** + * Fragment an IPv6 datagram if too large for the netif or path MTU. + * + * Chop the datagram in MTU sized chunks and send them in order + * by pointing PBUF_REFs into p + * + * @param p ipv6 packet to send + * @param netif the netif on which to send + * @param dest destination ipv6 address to which to send + * + * @return ERR_OK if sent successfully, err_t otherwise + */ +err_t +ip6_frag(struct pbuf *p, struct netif *netif, const ip6_addr_t *dest) +{ + struct ip6_hdr *original_ip6hdr; + struct ip6_hdr *ip6hdr; + struct ip6_frag_hdr *frag_hdr; + struct pbuf *rambuf; +#if !LWIP_NETIF_TX_SINGLE_PBUF + struct pbuf *newpbuf; + u16_t newpbuflen = 0; + u16_t left_to_copy; +#endif + static u32_t identification; + u16_t left, cop; + const u16_t mtu = nd6_get_destination_mtu(dest, netif); + const u16_t nfb = (u16_t)((mtu - (IP6_HLEN + IP6_FRAG_HLEN)) & IP6_FRAG_OFFSET_MASK); + u16_t fragment_offset = 0; + u16_t last; + u16_t poff = IP6_HLEN; + + identification++; + + original_ip6hdr = (struct ip6_hdr *)p->payload; + + /* @todo we assume there are no options in the unfragmentable part (IPv6 header). */ + LWIP_ASSERT("p->tot_len >= IP6_HLEN", p->tot_len >= IP6_HLEN); + left = (u16_t)(p->tot_len - IP6_HLEN); + + while (left) { + last = (left <= nfb); + + /* Fill this fragment */ + cop = last ? left : nfb; + +#if LWIP_NETIF_TX_SINGLE_PBUF + rambuf = pbuf_alloc(PBUF_IP, cop + IP6_FRAG_HLEN, PBUF_RAM); + if (rambuf == NULL) { + IP6_FRAG_STATS_INC(ip6_frag.memerr); + return ERR_MEM; + } + LWIP_ASSERT("this needs a pbuf in one piece!", + (rambuf->len == rambuf->tot_len) && (rambuf->next == NULL)); + poff += pbuf_copy_partial(p, (u8_t*)rambuf->payload + IP6_FRAG_HLEN, cop, poff); + /* make room for the IP header */ + if (pbuf_add_header(rambuf, IP6_HLEN)) { + pbuf_free(rambuf); + IP6_FRAG_STATS_INC(ip6_frag.memerr); + return ERR_MEM; + } + /* fill in the IP header */ + SMEMCPY(rambuf->payload, original_ip6hdr, IP6_HLEN); + ip6hdr = (struct ip6_hdr *)rambuf->payload; + frag_hdr = (struct ip6_frag_hdr *)((u8_t*)rambuf->payload + IP6_HLEN); +#else + /* When not using a static buffer, create a chain of pbufs. + * The first will be a PBUF_RAM holding the link, IPv6, and Fragment header. + * The rest will be PBUF_REFs mirroring the pbuf chain to be fragged, + * but limited to the size of an mtu. + */ + rambuf = pbuf_alloc(PBUF_LINK, IP6_HLEN + IP6_FRAG_HLEN, PBUF_RAM); + if (rambuf == NULL) { + IP6_FRAG_STATS_INC(ip6_frag.memerr); + return ERR_MEM; + } + LWIP_ASSERT("this needs a pbuf in one piece!", + (p->len >= (IP6_HLEN))); + SMEMCPY(rambuf->payload, original_ip6hdr, IP6_HLEN); + ip6hdr = (struct ip6_hdr *)rambuf->payload; + frag_hdr = (struct ip6_frag_hdr *)((u8_t*)rambuf->payload + IP6_HLEN); + + /* Can just adjust p directly for needed offset. */ + p->payload = (u8_t *)p->payload + poff; + p->len = (u16_t)(p->len - poff); + p->tot_len = (u16_t)(p->tot_len - poff); + + left_to_copy = cop; + while (left_to_copy) { + struct pbuf_custom_ref *pcr; + newpbuflen = (left_to_copy < p->len) ? left_to_copy : p->len; + /* Is this pbuf already empty? */ + if (!newpbuflen) { + p = p->next; + continue; + } + pcr = ip6_frag_alloc_pbuf_custom_ref(); + if (pcr == NULL) { + pbuf_free(rambuf); + IP6_FRAG_STATS_INC(ip6_frag.memerr); + return ERR_MEM; + } + /* Mirror this pbuf, although we might not need all of it. */ + newpbuf = pbuf_alloced_custom(PBUF_RAW, newpbuflen, PBUF_REF, &pcr->pc, p->payload, newpbuflen); + if (newpbuf == NULL) { + ip6_frag_free_pbuf_custom_ref(pcr); + pbuf_free(rambuf); + IP6_FRAG_STATS_INC(ip6_frag.memerr); + return ERR_MEM; + } + pbuf_ref(p); + pcr->original = p; + pcr->pc.custom_free_function = ip6_frag_free_pbuf_custom; + + /* Add it to end of rambuf's chain, but using pbuf_cat, not pbuf_chain + * so that it is removed when pbuf_dechain is later called on rambuf. + */ + pbuf_cat(rambuf, newpbuf); + left_to_copy = (u16_t)(left_to_copy - newpbuflen); + if (left_to_copy) { + p = p->next; + } + } + poff = newpbuflen; +#endif /* LWIP_NETIF_TX_SINGLE_PBUF */ + + /* Set headers */ + frag_hdr->_nexth = original_ip6hdr->_nexth; + frag_hdr->reserved = 0; + frag_hdr->_fragment_offset = lwip_htons((u16_t)((fragment_offset & IP6_FRAG_OFFSET_MASK) | (last ? 0 : IP6_FRAG_MORE_FLAG))); + frag_hdr->_identification = lwip_htonl(identification); + + IP6H_NEXTH_SET(ip6hdr, IP6_NEXTH_FRAGMENT); + IP6H_PLEN_SET(ip6hdr, (u16_t)(cop + IP6_FRAG_HLEN)); + + /* No need for separate header pbuf - we allowed room for it in rambuf + * when allocated. + */ + IP6_FRAG_STATS_INC(ip6_frag.xmit); + netif->output_ip6(netif, rambuf, dest); + + /* Unfortunately we can't reuse rambuf - the hardware may still be + * using the buffer. Instead we free it (and the ensuing chain) and + * recreate it next time round the loop. If we're lucky the hardware + * will have already sent the packet, the free will really free, and + * there will be zero memory penalty. + */ + + pbuf_free(rambuf); + left = (u16_t)(left - cop); + fragment_offset = (u16_t)(fragment_offset + cop); + } + return ERR_OK; +} + +#endif /* LWIP_IPV6 && LWIP_IPV6_FRAG */ diff --git a/Other/tun2socks/core/c/core/ipv6/mld6.c b/Other/tun2socks/core/c/core/ipv6/mld6.c new file mode 100644 index 0000000..6387d46 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv6/mld6.c @@ -0,0 +1,626 @@ +/** + * @file + * Multicast listener discovery + * + * @defgroup mld6 MLD6 + * @ingroup ip6 + * Multicast listener discovery for IPv6. Aims to be compliant with RFC 2710. + * No support for MLDv2.\n + * Note: The allnodes (ff01::1, ff02::1) group is assumed be received by your + * netif since it must always be received for correct IPv6 operation (e.g. SLAAC). + * Ensure the netif filters are configured accordingly!\n + * The netif flags also need NETIF_FLAG_MLD6 flag set to enable MLD6 on a + * netif ("netif->flags |= NETIF_FLAG_MLD6;").\n + * To be called from TCPIP thread. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +/* Based on igmp.c implementation of igmp v2 protocol */ + +#include "lwip/opt.h" + +#if LWIP_IPV6 && LWIP_IPV6_MLD /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/mld6.h" +#include "lwip/prot/mld6.h" +#include "lwip/icmp6.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/ip.h" +#include "lwip/inet_chksum.h" +#include "lwip/pbuf.h" +#include "lwip/netif.h" +#include "lwip/memp.h" +#include "lwip/stats.h" + +#include + + +/* + * MLD constants + */ +#define MLD6_HL 1 +#define MLD6_JOIN_DELAYING_MEMBER_TMR_MS (500) + +#define MLD6_GROUP_NON_MEMBER 0 +#define MLD6_GROUP_DELAYING_MEMBER 1 +#define MLD6_GROUP_IDLE_MEMBER 2 + +/* Forward declarations. */ +static struct mld_group *mld6_new_group(struct netif *ifp, const ip6_addr_t *addr); +static err_t mld6_remove_group(struct netif *netif, struct mld_group *group); +static void mld6_delayed_report(struct mld_group *group, u16_t maxresp); +static void mld6_send(struct netif *netif, struct mld_group *group, u8_t type); + + +/** + * Stop MLD processing on interface + * + * @param netif network interface on which stop MLD processing + */ +err_t +mld6_stop(struct netif *netif) +{ + struct mld_group *group = netif_mld6_data(netif); + + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_MLD6, NULL); + + while (group != NULL) { + struct mld_group *next = group->next; /* avoid use-after-free below */ + + /* disable the group at the MAC level */ + if (netif->mld_mac_filter != NULL) { + netif->mld_mac_filter(netif, &(group->group_address), NETIF_DEL_MAC_FILTER); + } + + /* free group */ + memp_free(MEMP_MLD6_GROUP, group); + + /* move to "next" */ + group = next; + } + return ERR_OK; +} + +/** + * Report MLD memberships for this interface + * + * @param netif network interface on which report MLD memberships + */ +void +mld6_report_groups(struct netif *netif) +{ + struct mld_group *group = netif_mld6_data(netif); + + while (group != NULL) { + mld6_delayed_report(group, MLD6_JOIN_DELAYING_MEMBER_TMR_MS); + group = group->next; + } +} + +/** + * Search for a group that is joined on a netif + * + * @param ifp the network interface for which to look + * @param addr the group ipv6 address to search for + * @return a struct mld_group* if the group has been found, + * NULL if the group wasn't found. + */ +struct mld_group * +mld6_lookfor_group(struct netif *ifp, const ip6_addr_t *addr) +{ + struct mld_group *group = netif_mld6_data(ifp); + + while (group != NULL) { + if (ip6_addr_cmp(&(group->group_address), addr)) { + return group; + } + group = group->next; + } + + return NULL; +} + + +/** + * create a new group + * + * @param ifp the network interface for which to create + * @param addr the new group ipv6 + * @return a struct mld_group*, + * NULL on memory error. + */ +static struct mld_group * +mld6_new_group(struct netif *ifp, const ip6_addr_t *addr) +{ + struct mld_group *group; + + group = (struct mld_group *)memp_malloc(MEMP_MLD6_GROUP); + if (group != NULL) { + ip6_addr_set(&(group->group_address), addr); + group->timer = 0; /* Not running */ + group->group_state = MLD6_GROUP_IDLE_MEMBER; + group->last_reporter_flag = 0; + group->use = 0; + group->next = netif_mld6_data(ifp); + + netif_set_client_data(ifp, LWIP_NETIF_CLIENT_DATA_INDEX_MLD6, group); + } + + return group; +} + +/** + * Remove a group from the mld_group_list, but do not free it yet + * + * @param group the group to remove + * @return ERR_OK if group was removed from the list, an err_t otherwise + */ +static err_t +mld6_remove_group(struct netif *netif, struct mld_group *group) +{ + err_t err = ERR_OK; + + /* Is it the first group? */ + if (netif_mld6_data(netif) == group) { + netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_MLD6, group->next); + } else { + /* look for group further down the list */ + struct mld_group *tmpGroup; + for (tmpGroup = netif_mld6_data(netif); tmpGroup != NULL; tmpGroup = tmpGroup->next) { + if (tmpGroup->next == group) { + tmpGroup->next = group->next; + break; + } + } + /* Group not find group */ + if (tmpGroup == NULL) { + err = ERR_ARG; + } + } + + return err; +} + + +/** + * Process an input MLD message. Called by icmp6_input. + * + * @param p the mld packet, p->payload pointing to the icmpv6 header + * @param inp the netif on which this packet was received + */ +void +mld6_input(struct pbuf *p, struct netif *inp) +{ + struct mld_header *mld_hdr; + struct mld_group *group; + + MLD6_STATS_INC(mld6.recv); + + /* Check that mld header fits in packet. */ + if (p->len < sizeof(struct mld_header)) { + /* @todo debug message */ + pbuf_free(p); + MLD6_STATS_INC(mld6.lenerr); + MLD6_STATS_INC(mld6.drop); + return; + } + + mld_hdr = (struct mld_header *)p->payload; + + switch (mld_hdr->type) { + case ICMP6_TYPE_MLQ: /* Multicast listener query. */ + /* Is it a general query? */ + if (ip6_addr_isallnodes_linklocal(ip6_current_dest_addr()) && + ip6_addr_isany(&(mld_hdr->multicast_address))) { + MLD6_STATS_INC(mld6.rx_general); + /* Report all groups, except all nodes group, and if-local groups. */ + group = netif_mld6_data(inp); + while (group != NULL) { + if ((!(ip6_addr_ismulticast_iflocal(&(group->group_address)))) && + (!(ip6_addr_isallnodes_linklocal(&(group->group_address))))) { + mld6_delayed_report(group, mld_hdr->max_resp_delay); + } + group = group->next; + } + } else { + /* Have we joined this group? + * We use IP6 destination address to have a memory aligned copy. + * mld_hdr->multicast_address should be the same. */ + MLD6_STATS_INC(mld6.rx_group); + group = mld6_lookfor_group(inp, ip6_current_dest_addr()); + if (group != NULL) { + /* Schedule a report. */ + mld6_delayed_report(group, mld_hdr->max_resp_delay); + } + } + break; /* ICMP6_TYPE_MLQ */ + case ICMP6_TYPE_MLR: /* Multicast listener report. */ + /* Have we joined this group? + * We use IP6 destination address to have a memory aligned copy. + * mld_hdr->multicast_address should be the same. */ + MLD6_STATS_INC(mld6.rx_report); + group = mld6_lookfor_group(inp, ip6_current_dest_addr()); + if (group != NULL) { + /* If we are waiting to report, cancel it. */ + if (group->group_state == MLD6_GROUP_DELAYING_MEMBER) { + group->timer = 0; /* stopped */ + group->group_state = MLD6_GROUP_IDLE_MEMBER; + group->last_reporter_flag = 0; + } + } + break; /* ICMP6_TYPE_MLR */ + case ICMP6_TYPE_MLD: /* Multicast listener done. */ + /* Do nothing, router will query us. */ + break; /* ICMP6_TYPE_MLD */ + default: + MLD6_STATS_INC(mld6.proterr); + MLD6_STATS_INC(mld6.drop); + break; + } + + pbuf_free(p); +} + +/** + * @ingroup mld6 + * Join a group on one or all network interfaces. + * + * If the group is to be joined on all interfaces, the given group address must + * not have a zone set (i.e., it must have its zone index set to IP6_NO_ZONE). + * If the group is to be joined on one particular interface, the given group + * address may or may not have a zone set. + * + * @param srcaddr ipv6 address (zoned) of the network interface which should + * join a new group. If IP6_ADDR_ANY6, join on all netifs + * @param groupaddr the ipv6 address of the group to join (possibly but not + * necessarily zoned) + * @return ERR_OK if group was joined on the netif(s), an err_t otherwise + */ +err_t +mld6_joingroup(const ip6_addr_t *srcaddr, const ip6_addr_t *groupaddr) +{ + err_t err = ERR_VAL; /* no matching interface */ + struct netif *netif; + + LWIP_ASSERT_CORE_LOCKED(); + + /* loop through netif's */ + NETIF_FOREACH(netif) { + /* Should we join this interface ? */ + if (ip6_addr_isany(srcaddr) || + netif_get_ip6_addr_match(netif, srcaddr) >= 0) { + err = mld6_joingroup_netif(netif, groupaddr); + if (err != ERR_OK) { + return err; + } + } + } + + return err; +} + +/** + * @ingroup mld6 + * Join a group on a network interface. + * + * @param netif the network interface which should join a new group. + * @param groupaddr the ipv6 address of the group to join (possibly but not + * necessarily zoned) + * @return ERR_OK if group was joined on the netif, an err_t otherwise + */ +err_t +mld6_joingroup_netif(struct netif *netif, const ip6_addr_t *groupaddr) +{ + struct mld_group *group; +#if LWIP_IPV6_SCOPES + ip6_addr_t ip6addr; + + /* If the address has a particular scope but no zone set, use the netif to + * set one now. Within the mld6 module, all addresses are properly zoned. */ + if (ip6_addr_lacks_zone(groupaddr, IP6_MULTICAST)) { + ip6_addr_set(&ip6addr, groupaddr); + ip6_addr_assign_zone(&ip6addr, IP6_MULTICAST, netif); + groupaddr = &ip6addr; + } + IP6_ADDR_ZONECHECK_NETIF(groupaddr, netif); +#endif /* LWIP_IPV6_SCOPES */ + + LWIP_ASSERT_CORE_LOCKED(); + + /* find group or create a new one if not found */ + group = mld6_lookfor_group(netif, groupaddr); + + if (group == NULL) { + /* Joining a new group. Create a new group entry. */ + group = mld6_new_group(netif, groupaddr); + if (group == NULL) { + return ERR_MEM; + } + + /* Activate this address on the MAC layer. */ + if (netif->mld_mac_filter != NULL) { + netif->mld_mac_filter(netif, groupaddr, NETIF_ADD_MAC_FILTER); + } + + /* Report our membership. */ + MLD6_STATS_INC(mld6.tx_report); + mld6_send(netif, group, ICMP6_TYPE_MLR); + mld6_delayed_report(group, MLD6_JOIN_DELAYING_MEMBER_TMR_MS); + } + + /* Increment group use */ + group->use++; + return ERR_OK; +} + +/** + * @ingroup mld6 + * Leave a group on a network interface. + * + * Zoning of address follows the same rules as @ref mld6_joingroup. + * + * @param srcaddr ipv6 address (zoned) of the network interface which should + * leave the group. If IP6_ADDR_ANY6, leave on all netifs + * @param groupaddr the ipv6 address of the group to leave (possibly, but not + * necessarily zoned) + * @return ERR_OK if group was left on the netif(s), an err_t otherwise + */ +err_t +mld6_leavegroup(const ip6_addr_t *srcaddr, const ip6_addr_t *groupaddr) +{ + err_t err = ERR_VAL; /* no matching interface */ + struct netif *netif; + + LWIP_ASSERT_CORE_LOCKED(); + + /* loop through netif's */ + NETIF_FOREACH(netif) { + /* Should we leave this interface ? */ + if (ip6_addr_isany(srcaddr) || + netif_get_ip6_addr_match(netif, srcaddr) >= 0) { + err_t res = mld6_leavegroup_netif(netif, groupaddr); + if (err != ERR_OK) { + /* Store this result if we have not yet gotten a success */ + err = res; + } + } + } + + return err; +} + +/** + * @ingroup mld6 + * Leave a group on a network interface. + * + * @param netif the network interface which should leave the group. + * @param groupaddr the ipv6 address of the group to leave (possibly, but not + * necessarily zoned) + * @return ERR_OK if group was left on the netif, an err_t otherwise + */ +err_t +mld6_leavegroup_netif(struct netif *netif, const ip6_addr_t *groupaddr) +{ + struct mld_group *group; +#if LWIP_IPV6_SCOPES + ip6_addr_t ip6addr; + + if (ip6_addr_lacks_zone(groupaddr, IP6_MULTICAST)) { + ip6_addr_set(&ip6addr, groupaddr); + ip6_addr_assign_zone(&ip6addr, IP6_MULTICAST, netif); + groupaddr = &ip6addr; + } + IP6_ADDR_ZONECHECK_NETIF(groupaddr, netif); +#endif /* LWIP_IPV6_SCOPES */ + + LWIP_ASSERT_CORE_LOCKED(); + + /* find group */ + group = mld6_lookfor_group(netif, groupaddr); + + if (group != NULL) { + /* Leave if there is no other use of the group */ + if (group->use <= 1) { + /* Remove the group from the list */ + mld6_remove_group(netif, group); + + /* If we are the last reporter for this group */ + if (group->last_reporter_flag) { + MLD6_STATS_INC(mld6.tx_leave); + mld6_send(netif, group, ICMP6_TYPE_MLD); + } + + /* Disable the group at the MAC level */ + if (netif->mld_mac_filter != NULL) { + netif->mld_mac_filter(netif, groupaddr, NETIF_DEL_MAC_FILTER); + } + + /* free group struct */ + memp_free(MEMP_MLD6_GROUP, group); + } else { + /* Decrement group use */ + group->use--; + } + + /* Left group */ + return ERR_OK; + } + + /* Group not found */ + return ERR_VAL; +} + + +/** + * Periodic timer for mld processing. Must be called every + * MLD6_TMR_INTERVAL milliseconds (100). + * + * When a delaying member expires, a membership report is sent. + */ +void +mld6_tmr(void) +{ + struct netif *netif; + + NETIF_FOREACH(netif) { + struct mld_group *group = netif_mld6_data(netif); + + while (group != NULL) { + if (group->timer > 0) { + group->timer--; + if (group->timer == 0) { + /* If the state is MLD6_GROUP_DELAYING_MEMBER then we send a report for this group */ + if (group->group_state == MLD6_GROUP_DELAYING_MEMBER) { + MLD6_STATS_INC(mld6.tx_report); + mld6_send(netif, group, ICMP6_TYPE_MLR); + group->group_state = MLD6_GROUP_IDLE_MEMBER; + } + } + } + group = group->next; + } + } +} + +/** + * Schedule a delayed membership report for a group + * + * @param group the mld_group for which "delaying" membership report + * should be sent + * @param maxresp_in the max resp delay provided in the query + */ +static void +mld6_delayed_report(struct mld_group *group, u16_t maxresp_in) +{ + /* Convert maxresp from milliseconds to tmr ticks */ + u16_t maxresp = maxresp_in / MLD6_TMR_INTERVAL; + if (maxresp == 0) { + maxresp = 1; + } + +#ifdef LWIP_RAND + /* Randomize maxresp. (if LWIP_RAND is supported) */ + maxresp = (u16_t)(LWIP_RAND() % maxresp); + if (maxresp == 0) { + maxresp = 1; + } +#endif /* LWIP_RAND */ + + /* Apply timer value if no report has been scheduled already. */ + if ((group->group_state == MLD6_GROUP_IDLE_MEMBER) || + ((group->group_state == MLD6_GROUP_DELAYING_MEMBER) && + ((group->timer == 0) || (maxresp < group->timer)))) { + group->timer = maxresp; + group->group_state = MLD6_GROUP_DELAYING_MEMBER; + } +} + +/** + * Send a MLD message (report or done). + * + * An IPv6 hop-by-hop options header with a router alert option + * is prepended. + * + * @param group the group to report or quit + * @param type ICMP6_TYPE_MLR (report) or ICMP6_TYPE_MLD (done) + */ +static void +mld6_send(struct netif *netif, struct mld_group *group, u8_t type) +{ + struct mld_header *mld_hdr; + struct pbuf *p; + const ip6_addr_t *src_addr; + + /* Allocate a packet. Size is MLD header + IPv6 Hop-by-hop options header. */ + p = pbuf_alloc(PBUF_IP, sizeof(struct mld_header) + MLD6_HBH_HLEN, PBUF_RAM); + if (p == NULL) { + MLD6_STATS_INC(mld6.memerr); + return; + } + + /* Move to make room for Hop-by-hop options header. */ + if (pbuf_remove_header(p, MLD6_HBH_HLEN)) { + pbuf_free(p); + MLD6_STATS_INC(mld6.lenerr); + return; + } + + /* Select our source address. */ + if (!ip6_addr_isvalid(netif_ip6_addr_state(netif, 0))) { + /* This is a special case, when we are performing duplicate address detection. + * We must join the multicast group, but we don't have a valid address yet. */ + src_addr = IP6_ADDR_ANY6; + } else { + /* Use link-local address as source address. */ + src_addr = netif_ip6_addr(netif, 0); + } + + /* MLD message header pointer. */ + mld_hdr = (struct mld_header *)p->payload; + + /* Set fields. */ + mld_hdr->type = type; + mld_hdr->code = 0; + mld_hdr->chksum = 0; + mld_hdr->max_resp_delay = 0; + mld_hdr->reserved = 0; + ip6_addr_copy_to_packed(mld_hdr->multicast_address, group->group_address); + +#if CHECKSUM_GEN_ICMP6 + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_ICMP6) { + mld_hdr->chksum = ip6_chksum_pseudo(p, IP6_NEXTH_ICMP6, p->len, + src_addr, &(group->group_address)); + } +#endif /* CHECKSUM_GEN_ICMP6 */ + + /* Add hop-by-hop headers options: router alert with MLD value. */ + ip6_options_add_hbh_ra(p, IP6_NEXTH_ICMP6, IP6_ROUTER_ALERT_VALUE_MLD); + + if (type == ICMP6_TYPE_MLR) { + /* Remember we were the last to report */ + group->last_reporter_flag = 1; + } + + /* Send the packet out. */ + MLD6_STATS_INC(mld6.xmit); + ip6_output_if(p, (ip6_addr_isany(src_addr)) ? NULL : src_addr, &(group->group_address), + MLD6_HL, 0, IP6_NEXTH_HOPBYHOP, netif); + pbuf_free(p); +} + +#endif /* LWIP_IPV6 */ diff --git a/Other/tun2socks/core/c/core/ipv6/nd6.c b/Other/tun2socks/core/c/core/ipv6/nd6.c new file mode 100644 index 0000000..db0c132 --- /dev/null +++ b/Other/tun2socks/core/c/core/ipv6/nd6.c @@ -0,0 +1,2434 @@ +/** + * @file + * + * Neighbor discovery and stateless address autoconfiguration for IPv6. + * Aims to be compliant with RFC 4861 (Neighbor discovery) and RFC 4862 + * (Address autoconfiguration). + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#include "lwip/opt.h" + +#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/nd6.h" +#include "lwip/priv/nd6_priv.h" +#include "lwip/prot/nd6.h" +#include "lwip/prot/icmp6.h" +#include "lwip/pbuf.h" +#include "lwip/mem.h" +#include "lwip/memp.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/inet_chksum.h" +#include "lwip/netif.h" +#include "lwip/icmp6.h" +#include "lwip/mld6.h" +#include "lwip/dhcp6.h" +#include "lwip/ip.h" +#include "lwip/stats.h" +#include "lwip/dns.h" + +#include + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif + +#if LWIP_IPV6_DUP_DETECT_ATTEMPTS > IP6_ADDR_TENTATIVE_COUNT_MASK +#error LWIP_IPV6_DUP_DETECT_ATTEMPTS > IP6_ADDR_TENTATIVE_COUNT_MASK +#endif + +/* Router tables. */ +struct nd6_neighbor_cache_entry neighbor_cache[LWIP_ND6_NUM_NEIGHBORS]; +struct nd6_destination_cache_entry destination_cache[LWIP_ND6_NUM_DESTINATIONS]; +struct nd6_prefix_list_entry prefix_list[LWIP_ND6_NUM_PREFIXES]; +struct nd6_router_list_entry default_router_list[LWIP_ND6_NUM_ROUTERS]; + +/* Default values, can be updated by a RA message. */ +u32_t reachable_time = LWIP_ND6_REACHABLE_TIME; +u32_t retrans_timer = LWIP_ND6_RETRANS_TIMER; /* @todo implement this value in timer */ + +/* Index for cache entries. */ +static u8_t nd6_cached_neighbor_index; +static netif_addr_idx_t nd6_cached_destination_index; + +/* Multicast address holder. */ +static ip6_addr_t multicast_address; + +static u8_t nd6_tmr_rs_reduction; + +/* Static buffer to parse RA packet options */ +union ra_options { + struct lladdr_option lladdr; + struct mtu_option mtu; + struct prefix_option prefix; +#if LWIP_ND6_RDNSS_MAX_DNS_SERVERS + struct rdnss_option rdnss; +#endif +}; +static union ra_options nd6_ra_buffer; + +/* Forward declarations. */ +static s8_t nd6_find_neighbor_cache_entry(const ip6_addr_t *ip6addr); +static s8_t nd6_new_neighbor_cache_entry(void); +static void nd6_free_neighbor_cache_entry(s8_t i); +static s16_t nd6_find_destination_cache_entry(const ip6_addr_t *ip6addr); +static s16_t nd6_new_destination_cache_entry(void); +static int nd6_is_prefix_in_netif(const ip6_addr_t *ip6addr, struct netif *netif); +static s8_t nd6_select_router(const ip6_addr_t *ip6addr, struct netif *netif); +static s8_t nd6_get_router(const ip6_addr_t *router_addr, struct netif *netif); +static s8_t nd6_new_router(const ip6_addr_t *router_addr, struct netif *netif); +static s8_t nd6_get_onlink_prefix(const ip6_addr_t *prefix, struct netif *netif); +static s8_t nd6_new_onlink_prefix(const ip6_addr_t *prefix, struct netif *netif); +static s8_t nd6_get_next_hop_entry(const ip6_addr_t *ip6addr, struct netif *netif); +static err_t nd6_queue_packet(s8_t neighbor_index, struct pbuf *q); + +#define ND6_SEND_FLAG_MULTICAST_DEST 0x01 +#define ND6_SEND_FLAG_ALLNODES_DEST 0x02 +#define ND6_SEND_FLAG_ANY_SRC 0x04 +static void nd6_send_ns(struct netif *netif, const ip6_addr_t *target_addr, u8_t flags); +static void nd6_send_na(struct netif *netif, const ip6_addr_t *target_addr, u8_t flags); +static void nd6_send_neighbor_cache_probe(struct nd6_neighbor_cache_entry *entry, u8_t flags); +#if LWIP_IPV6_SEND_ROUTER_SOLICIT +static err_t nd6_send_rs(struct netif *netif); +#endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */ + +#if LWIP_ND6_QUEUEING +static void nd6_free_q(struct nd6_q_entry *q); +#else /* LWIP_ND6_QUEUEING */ +#define nd6_free_q(q) pbuf_free(q) +#endif /* LWIP_ND6_QUEUEING */ +static void nd6_send_q(s8_t i); + + +/** + * A local address has been determined to be a duplicate. Take the appropriate + * action(s) on the address and the interface as a whole. + * + * @param netif the netif that owns the address + * @param addr_idx the index of the address detected to be a duplicate + */ +static void +nd6_duplicate_addr_detected(struct netif *netif, s8_t addr_idx) +{ + + /* Mark the address as duplicate, but leave its lifetimes alone. If this was + * a manually assigned address, it will remain in existence as duplicate, and + * as such be unusable for any practical purposes until manual intervention. + * If this was an autogenerated address, the address will follow normal + * expiration rules, and thus disappear once its valid lifetime expires. */ + netif_ip6_addr_set_state(netif, addr_idx, IP6_ADDR_DUPLICATED); + +#if LWIP_IPV6_AUTOCONFIG + /* If the affected address was the link-local address that we use to generate + * all other addresses, then we should not continue to use those derived + * addresses either, so mark them as duplicate as well. For autoconfig-only + * setups, this will make the interface effectively unusable, approaching the + * intention of RFC 4862 Sec. 5.4.5. @todo implement the full requirements */ + if (addr_idx == 0) { + s8_t i; + for (i = 1; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (!ip6_addr_isinvalid(netif_ip6_addr_state(netif, i)) && + !netif_ip6_addr_isstatic(netif, i)) { + netif_ip6_addr_set_state(netif, i, IP6_ADDR_DUPLICATED); + } + } + } +#endif /* LWIP_IPV6_AUTOCONFIG */ +} + +#if LWIP_IPV6_AUTOCONFIG +/** + * We received a router advertisement that contains a prefix with the + * autoconfiguration flag set. Add or update an associated autogenerated + * address. + * + * @param netif the netif on which the router advertisement arrived + * @param prefix_opt a pointer to the prefix option data + * @param prefix_addr an aligned copy of the prefix address + */ +static void +nd6_process_autoconfig_prefix(struct netif *netif, + struct prefix_option *prefix_opt, const ip6_addr_t *prefix_addr) +{ + ip6_addr_t ip6addr; + u32_t valid_life, pref_life; + u8_t addr_state; + s8_t i, free_idx; + + /* The caller already checks RFC 4862 Sec. 5.5.3 points (a) and (b). We do + * the rest, starting with checks for (c) and (d) here. */ + valid_life = lwip_htonl(prefix_opt->valid_lifetime); + pref_life = lwip_htonl(prefix_opt->preferred_lifetime); + if (pref_life > valid_life || prefix_opt->prefix_length != 64) { + return; /* silently ignore this prefix for autoconfiguration purposes */ + } + + /* If an autogenerated address already exists for this prefix, update its + * lifetimes. An address is considered autogenerated if 1) it is not static + * (i.e., manually assigned), and 2) there is an advertised autoconfiguration + * prefix for it (the one we are processing here). This does not necessarily + * exclude the possibility that the address was actually assigned by, say, + * DHCPv6. If that distinction becomes important in the future, more state + * must be kept. As explained elsewhere we also update lifetimes of tentative + * and duplicate addresses. Skip address slot 0 (the link-local address). */ + for (i = 1; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + addr_state = netif_ip6_addr_state(netif, i); + if (!ip6_addr_isinvalid(addr_state) && !netif_ip6_addr_isstatic(netif, i) && + ip6_addr_netcmp(prefix_addr, netif_ip6_addr(netif, i))) { + /* Update the valid lifetime, as per RFC 4862 Sec. 5.5.3 point (e). + * The valid lifetime will never drop to zero as a result of this. */ + u32_t remaining_life = netif_ip6_addr_valid_life(netif, i); + if (valid_life > ND6_2HRS || valid_life > remaining_life) { + netif_ip6_addr_set_valid_life(netif, i, valid_life); + } else if (remaining_life > ND6_2HRS) { + netif_ip6_addr_set_valid_life(netif, i, ND6_2HRS); + } + LWIP_ASSERT("bad valid lifetime", !netif_ip6_addr_isstatic(netif, i)); + /* Update the preferred lifetime. No bounds checks are needed here. In + * rare cases the advertisement may un-deprecate the address, though. + * Deprecation is left to the timer code where it is handled anyway. */ + if (pref_life > 0 && addr_state == IP6_ADDR_DEPRECATED) { + netif_ip6_addr_set_state(netif, i, IP6_ADDR_PREFERRED); + } + netif_ip6_addr_set_pref_life(netif, i, pref_life); + return; /* there should be at most one matching address */ + } + } + + /* No autogenerated address exists for this prefix yet. See if we can add a + * new one. However, if IPv6 autoconfiguration is administratively disabled, + * do not generate new addresses, but do keep updating lifetimes for existing + * addresses. Also, when adding new addresses, we must protect explicitly + * against a valid lifetime of zero, because again, we use that as a special + * value. The generated address would otherwise expire immediately anyway. + * Finally, the original link-local address must be usable at all. We start + * creating addresses even if the link-local address is still in tentative + * state though, and deal with the fallout of that upon DAD collision. */ + addr_state = netif_ip6_addr_state(netif, 0); + if (!netif->ip6_autoconfig_enabled || valid_life == IP6_ADDR_LIFE_STATIC || + ip6_addr_isinvalid(addr_state) || ip6_addr_isduplicated(addr_state)) { + return; + } + + /* Construct the new address that we intend to use, and then see if that + * address really does not exist. It might have been added manually, after + * all. As a side effect, find a free slot. Note that we cannot use + * netif_add_ip6_address() here, as it would return ERR_OK if the address + * already did exist, resulting in that address being given lifetimes. */ + IP6_ADDR(&ip6addr, prefix_addr->addr[0], prefix_addr->addr[1], + netif_ip6_addr(netif, 0)->addr[2], netif_ip6_addr(netif, 0)->addr[3]); + ip6_addr_assign_zone(&ip6addr, IP6_UNICAST, netif); + + free_idx = 0; + for (i = 1; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (!ip6_addr_isinvalid(netif_ip6_addr_state(netif, i))) { + if (ip6_addr_cmp(&ip6addr, netif_ip6_addr(netif, i))) { + return; /* formed address already exists */ + } + } else if (free_idx == 0) { + free_idx = i; + } + } + if (free_idx == 0) { + return; /* no address slots available, try again on next advertisement */ + } + + /* Assign the new address to the interface. */ + ip_addr_copy_from_ip6(netif->ip6_addr[free_idx], ip6addr); + netif_ip6_addr_set_valid_life(netif, free_idx, valid_life); + netif_ip6_addr_set_pref_life(netif, free_idx, pref_life); + netif_ip6_addr_set_state(netif, free_idx, IP6_ADDR_TENTATIVE); +} +#endif /* LWIP_IPV6_AUTOCONFIG */ + +/** + * Process an incoming neighbor discovery message + * + * @param p the nd packet, p->payload pointing to the icmpv6 header + * @param inp the netif on which this packet was received + */ +void +nd6_input(struct pbuf *p, struct netif *inp) +{ + u8_t msg_type; + s8_t i; + s16_t dest_idx; + + ND6_STATS_INC(nd6.recv); + + msg_type = *((u8_t *)p->payload); + switch (msg_type) { + case ICMP6_TYPE_NA: /* Neighbor Advertisement. */ + { + struct na_header *na_hdr; + struct lladdr_option *lladdr_opt; + ip6_addr_t target_address; + + /* Check that na header fits in packet. */ + if (p->len < (sizeof(struct na_header))) { + /* @todo debug message */ + pbuf_free(p); + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + return; + } + + na_hdr = (struct na_header *)p->payload; + + /* Create an aligned, zoned copy of the target address. */ + ip6_addr_copy_from_packed(target_address, na_hdr->target_address); + ip6_addr_assign_zone(&target_address, IP6_UNICAST, inp); + + /* Check a subset of the other RFC 4861 Sec. 7.1.2 requirements. */ + if (IP6H_HOPLIM(ip6_current_header()) != ND6_HOPLIM || na_hdr->code != 0 || + ip6_addr_ismulticast(&target_address)) { + pbuf_free(p); + ND6_STATS_INC(nd6.proterr); + ND6_STATS_INC(nd6.drop); + return; + } + + /* @todo RFC MUST: if IP destination is multicast, Solicited flag is zero */ + /* @todo RFC MUST: all included options have a length greater than zero */ + + /* Unsolicited NA?*/ + if (ip6_addr_ismulticast(ip6_current_dest_addr())) { + /* This is an unsolicited NA. + * link-layer changed? + * part of DAD mechanism? */ + +#if LWIP_IPV6_DUP_DETECT_ATTEMPTS + /* If the target address matches this netif, it is a DAD response. */ + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (!ip6_addr_isinvalid(netif_ip6_addr_state(inp, i)) && + !ip6_addr_isduplicated(netif_ip6_addr_state(inp, i)) && + ip6_addr_cmp(&target_address, netif_ip6_addr(inp, i))) { + /* We are using a duplicate address. */ + nd6_duplicate_addr_detected(inp, i); + + pbuf_free(p); + return; + } + } +#endif /* LWIP_IPV6_DUP_DETECT_ATTEMPTS */ + + /* Check that link-layer address option also fits in packet. */ + if (p->len < (sizeof(struct na_header) + 2)) { + /* @todo debug message */ + pbuf_free(p); + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + return; + } + + lladdr_opt = (struct lladdr_option *)((u8_t*)p->payload + sizeof(struct na_header)); + + if (p->len < (sizeof(struct na_header) + (lladdr_opt->length << 3))) { + /* @todo debug message */ + pbuf_free(p); + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + return; + } + + /* This is an unsolicited NA, most likely there was a LLADDR change. */ + i = nd6_find_neighbor_cache_entry(&target_address); + if (i >= 0) { + if (na_hdr->flags & ND6_FLAG_OVERRIDE) { + MEMCPY(neighbor_cache[i].lladdr, lladdr_opt->addr, inp->hwaddr_len); + } + } + } else { + /* This is a solicited NA. + * neighbor address resolution response? + * neighbor unreachability detection response? */ + + /* Find the cache entry corresponding to this na. */ + i = nd6_find_neighbor_cache_entry(&target_address); + if (i < 0) { + /* We no longer care about this target address. drop it. */ + pbuf_free(p); + return; + } + + /* Update cache entry. */ + if ((na_hdr->flags & ND6_FLAG_OVERRIDE) || + (neighbor_cache[i].state == ND6_INCOMPLETE)) { + /* Check that link-layer address option also fits in packet. */ + if (p->len < (sizeof(struct na_header) + 2)) { + /* @todo debug message */ + pbuf_free(p); + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + return; + } + + lladdr_opt = (struct lladdr_option *)((u8_t*)p->payload + sizeof(struct na_header)); + + if (p->len < (sizeof(struct na_header) + (lladdr_opt->length << 3))) { + /* @todo debug message */ + pbuf_free(p); + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + return; + } + + MEMCPY(neighbor_cache[i].lladdr, lladdr_opt->addr, inp->hwaddr_len); + } + + neighbor_cache[i].netif = inp; + neighbor_cache[i].state = ND6_REACHABLE; + neighbor_cache[i].counter.reachable_time = reachable_time; + + /* Send queued packets, if any. */ + if (neighbor_cache[i].q != NULL) { + nd6_send_q(i); + } + } + + break; /* ICMP6_TYPE_NA */ + } + case ICMP6_TYPE_NS: /* Neighbor solicitation. */ + { + struct ns_header *ns_hdr; + struct lladdr_option *lladdr_opt; + ip6_addr_t target_address; + u8_t accepted; + + /* Check that ns header fits in packet. */ + if (p->len < sizeof(struct ns_header)) { + /* @todo debug message */ + pbuf_free(p); + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + return; + } + + ns_hdr = (struct ns_header *)p->payload; + + /* Create an aligned, zoned copy of the target address. */ + ip6_addr_copy_from_packed(target_address, ns_hdr->target_address); + ip6_addr_assign_zone(&target_address, IP6_UNICAST, inp); + + /* Check a subset of the other RFC 4861 Sec. 7.1.1 requirements. */ + if (IP6H_HOPLIM(ip6_current_header()) != ND6_HOPLIM || ns_hdr->code != 0 || + ip6_addr_ismulticast(&target_address)) { + pbuf_free(p); + ND6_STATS_INC(nd6.proterr); + ND6_STATS_INC(nd6.drop); + return; + } + + /* @todo RFC MUST: all included options have a length greater than zero */ + /* @todo RFC MUST: if IP source is 'any', destination is solicited-node multicast address */ + /* @todo RFC MUST: if IP source is 'any', there is no source LL address option */ + + /* Check if there is a link-layer address provided. Only point to it if in this buffer. */ + if (p->len >= (sizeof(struct ns_header) + 2)) { + lladdr_opt = (struct lladdr_option *)((u8_t*)p->payload + sizeof(struct ns_header)); + if (p->len < (sizeof(struct ns_header) + (lladdr_opt->length << 3))) { + lladdr_opt = NULL; + } + } else { + lladdr_opt = NULL; + } + + /* Check if the target address is configured on the receiving netif. */ + accepted = 0; + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; ++i) { + if ((ip6_addr_isvalid(netif_ip6_addr_state(inp, i)) || + (ip6_addr_istentative(netif_ip6_addr_state(inp, i)) && + ip6_addr_isany(ip6_current_src_addr()))) && + ip6_addr_cmp(&target_address, netif_ip6_addr(inp, i))) { + accepted = 1; + break; + } + } + + /* NS not for us? */ + if (!accepted) { + pbuf_free(p); + return; + } + + /* Check for ANY address in src (DAD algorithm). */ + if (ip6_addr_isany(ip6_current_src_addr())) { + /* Sender is validating this address. */ + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; ++i) { + if (!ip6_addr_isinvalid(netif_ip6_addr_state(inp, i)) && + ip6_addr_cmp(&target_address, netif_ip6_addr(inp, i))) { + /* Send a NA back so that the sender does not use this address. */ + nd6_send_na(inp, netif_ip6_addr(inp, i), ND6_FLAG_OVERRIDE | ND6_SEND_FLAG_ALLNODES_DEST); + if (ip6_addr_istentative(netif_ip6_addr_state(inp, i))) { + /* We shouldn't use this address either. */ + nd6_duplicate_addr_detected(inp, i); + } + } + } + } else { + /* Sender is trying to resolve our address. */ + /* Verify that they included their own link-layer address. */ + if (lladdr_opt == NULL) { + /* Not a valid message. */ + pbuf_free(p); + ND6_STATS_INC(nd6.proterr); + ND6_STATS_INC(nd6.drop); + return; + } + + i = nd6_find_neighbor_cache_entry(ip6_current_src_addr()); + if (i>= 0) { + /* We already have a record for the solicitor. */ + if (neighbor_cache[i].state == ND6_INCOMPLETE) { + neighbor_cache[i].netif = inp; + MEMCPY(neighbor_cache[i].lladdr, lladdr_opt->addr, inp->hwaddr_len); + + /* Delay probe in case we get confirmation of reachability from upper layer (TCP). */ + neighbor_cache[i].state = ND6_DELAY; + neighbor_cache[i].counter.delay_time = LWIP_ND6_DELAY_FIRST_PROBE_TIME / ND6_TMR_INTERVAL; + } + } else { + /* Add their IPv6 address and link-layer address to neighbor cache. + * We will need it at least to send a unicast NA message, but most + * likely we will also be communicating with this node soon. */ + i = nd6_new_neighbor_cache_entry(); + if (i < 0) { + /* We couldn't assign a cache entry for this neighbor. + * we won't be able to reply. drop it. */ + pbuf_free(p); + ND6_STATS_INC(nd6.memerr); + return; + } + neighbor_cache[i].netif = inp; + MEMCPY(neighbor_cache[i].lladdr, lladdr_opt->addr, inp->hwaddr_len); + ip6_addr_set(&(neighbor_cache[i].next_hop_address), ip6_current_src_addr()); + + /* Receiving a message does not prove reachability: only in one direction. + * Delay probe in case we get confirmation of reachability from upper layer (TCP). */ + neighbor_cache[i].state = ND6_DELAY; + neighbor_cache[i].counter.delay_time = LWIP_ND6_DELAY_FIRST_PROBE_TIME / ND6_TMR_INTERVAL; + } + + /* Send back a NA for us. Allocate the reply pbuf. */ + nd6_send_na(inp, &target_address, ND6_FLAG_SOLICITED | ND6_FLAG_OVERRIDE); + } + + break; /* ICMP6_TYPE_NS */ + } + case ICMP6_TYPE_RA: /* Router Advertisement. */ + { + struct ra_header *ra_hdr; + u8_t *buffer; /* Used to copy options. */ + u16_t offset; +#if LWIP_ND6_RDNSS_MAX_DNS_SERVERS + /* There can be multiple RDNSS options per RA */ + u8_t rdnss_server_idx = 0; +#endif /* LWIP_ND6_RDNSS_MAX_DNS_SERVERS */ + + /* Check that RA header fits in packet. */ + if (p->len < sizeof(struct ra_header)) { + /* @todo debug message */ + pbuf_free(p); + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + return; + } + + ra_hdr = (struct ra_header *)p->payload; + + /* Check a subset of the other RFC 4861 Sec. 6.1.2 requirements. */ + if (!ip6_addr_islinklocal(ip6_current_src_addr()) || + IP6H_HOPLIM(ip6_current_header()) != ND6_HOPLIM || ra_hdr->code != 0) { + pbuf_free(p); + ND6_STATS_INC(nd6.proterr); + ND6_STATS_INC(nd6.drop); + return; + } + + /* @todo RFC MUST: all included options have a length greater than zero */ + + /* If we are sending RS messages, stop. */ +#if LWIP_IPV6_SEND_ROUTER_SOLICIT + /* ensure at least one solicitation is sent (see RFC 4861, ch. 6.3.7) */ + if ((inp->rs_count < LWIP_ND6_MAX_MULTICAST_SOLICIT) || + (nd6_send_rs(inp) == ERR_OK)) { + inp->rs_count = 0; + } else { + inp->rs_count = 1; + } +#endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */ + + /* Get the matching default router entry. */ + i = nd6_get_router(ip6_current_src_addr(), inp); + if (i < 0) { + /* Create a new router entry. */ + i = nd6_new_router(ip6_current_src_addr(), inp); + } + + if (i < 0) { + /* Could not create a new router entry. */ + pbuf_free(p); + ND6_STATS_INC(nd6.memerr); + return; + } + + /* Re-set invalidation timer. */ + default_router_list[i].invalidation_timer = lwip_htons(ra_hdr->router_lifetime); + + /* Re-set default timer values. */ +#if LWIP_ND6_ALLOW_RA_UPDATES + if (ra_hdr->retrans_timer > 0) { + retrans_timer = lwip_htonl(ra_hdr->retrans_timer); + } + if (ra_hdr->reachable_time > 0) { + reachable_time = lwip_htonl(ra_hdr->reachable_time); + } +#endif /* LWIP_ND6_ALLOW_RA_UPDATES */ + + /* @todo set default hop limit... */ + /* ra_hdr->current_hop_limit;*/ + + /* Update flags in local entry (incl. preference). */ + default_router_list[i].flags = ra_hdr->flags; + +#if LWIP_IPV6_DHCP6 + /* Trigger DHCPv6 if enabled */ + dhcp6_nd6_ra_trigger(inp, ra_hdr->flags & ND6_RA_FLAG_MANAGED_ADDR_CONFIG, + ra_hdr->flags & ND6_RA_FLAG_OTHER_CONFIG); +#endif + + /* Offset to options. */ + offset = sizeof(struct ra_header); + + /* Process each option. */ + while ((p->tot_len - offset) >= 2) { + u8_t option_type; + u16_t option_len; + int option_len8 = pbuf_try_get_at(p, offset + 1); + if (option_len8 <= 0) { + /* read beyond end or zero length */ + goto lenerr_drop_free_return; + } + option_len = ((u8_t)option_len8) << 3; + if (option_len > p->tot_len - offset) { + /* short packet (option does not fit in) */ + goto lenerr_drop_free_return; + } + if (p->len == p->tot_len) { + /* no need to copy from contiguous pbuf */ + buffer = &((u8_t*)p->payload)[offset]; + } else { + /* check if this option fits into our buffer */ + if (option_len > sizeof(nd6_ra_buffer)) { + option_type = pbuf_get_at(p, offset); + /* invalid option length */ + if (option_type != ND6_OPTION_TYPE_RDNSS) { + goto lenerr_drop_free_return; + } + /* we allow RDNSS option to be longer - we'll just drop some servers */ + option_len = sizeof(nd6_ra_buffer); + } + buffer = (u8_t*)&nd6_ra_buffer; + option_len = pbuf_copy_partial(p, &nd6_ra_buffer, option_len, offset); + } + option_type = buffer[0]; + switch (option_type) { + case ND6_OPTION_TYPE_SOURCE_LLADDR: + { + struct lladdr_option *lladdr_opt; + if (option_len < sizeof(struct lladdr_option)) { + goto lenerr_drop_free_return; + } + lladdr_opt = (struct lladdr_option *)buffer; + if ((default_router_list[i].neighbor_entry != NULL) && + (default_router_list[i].neighbor_entry->state == ND6_INCOMPLETE)) { + SMEMCPY(default_router_list[i].neighbor_entry->lladdr, lladdr_opt->addr, inp->hwaddr_len); + default_router_list[i].neighbor_entry->state = ND6_REACHABLE; + default_router_list[i].neighbor_entry->counter.reachable_time = reachable_time; + } + break; + } + case ND6_OPTION_TYPE_MTU: + { + struct mtu_option *mtu_opt; + u32_t mtu32; + if (option_len < sizeof(struct mtu_option)) { + goto lenerr_drop_free_return; + } + mtu_opt = (struct mtu_option *)buffer; + mtu32 = lwip_htonl(mtu_opt->mtu); + if ((mtu32 >= 1280) && (mtu32 <= 0xffff)) { +#if LWIP_ND6_ALLOW_RA_UPDATES + if (inp->mtu) { + /* don't set the mtu for IPv6 higher than the netif driver supports */ + inp->mtu6 = LWIP_MIN(inp->mtu, (u16_t)mtu32); + } else { + inp->mtu6 = (u16_t)mtu32; + } +#endif /* LWIP_ND6_ALLOW_RA_UPDATES */ + } + break; + } + case ND6_OPTION_TYPE_PREFIX_INFO: + { + struct prefix_option *prefix_opt; + ip6_addr_t prefix_addr; + if (option_len < sizeof(struct prefix_option)) { + goto lenerr_drop_free_return; + } + + prefix_opt = (struct prefix_option *)buffer; + + /* Get a memory-aligned copy of the prefix. */ + ip6_addr_copy_from_packed(prefix_addr, prefix_opt->prefix); + ip6_addr_assign_zone(&prefix_addr, IP6_UNICAST, inp); + + if (!ip6_addr_islinklocal(&prefix_addr)) { + if ((prefix_opt->flags & ND6_PREFIX_FLAG_ON_LINK) && + (prefix_opt->prefix_length == 64)) { + /* Add to on-link prefix list. */ + u32_t valid_life; + s8_t prefix; + + valid_life = lwip_htonl(prefix_opt->valid_lifetime); + + /* find cache entry for this prefix. */ + prefix = nd6_get_onlink_prefix(&prefix_addr, inp); + if (prefix < 0 && valid_life > 0) { + /* Create a new cache entry. */ + prefix = nd6_new_onlink_prefix(&prefix_addr, inp); + } + if (prefix >= 0) { + prefix_list[prefix].invalidation_timer = valid_life; + } + } +#if LWIP_IPV6_AUTOCONFIG + if (prefix_opt->flags & ND6_PREFIX_FLAG_AUTONOMOUS) { + /* Perform processing for autoconfiguration. */ + nd6_process_autoconfig_prefix(inp, prefix_opt, &prefix_addr); + } +#endif /* LWIP_IPV6_AUTOCONFIG */ + } + + break; + } + case ND6_OPTION_TYPE_ROUTE_INFO: + /* @todo implement preferred routes. + struct route_option * route_opt; + route_opt = (struct route_option *)buffer;*/ + + break; +#if LWIP_ND6_RDNSS_MAX_DNS_SERVERS + case ND6_OPTION_TYPE_RDNSS: + { + u8_t num, n; + u16_t copy_offset = offset + SIZEOF_RDNSS_OPTION_BASE; + struct rdnss_option * rdnss_opt; + if (option_len < SIZEOF_RDNSS_OPTION_BASE) { + goto lenerr_drop_free_return; + } + + rdnss_opt = (struct rdnss_option *)buffer; + num = (rdnss_opt->length - 1) / 2; + for (n = 0; (rdnss_server_idx < DNS_MAX_SERVERS) && (n < num); n++) { + ip_addr_t rdnss_address; + + /* Copy directly from pbuf to get an aligned, zoned copy of the prefix. */ + if (pbuf_copy_partial(p, &rdnss_address, sizeof(ip6_addr_p_t), copy_offset) == sizeof(ip6_addr_p_t)) { + IP_SET_TYPE_VAL(rdnss_address, IPADDR_TYPE_V6); + ip6_addr_assign_zone(ip_2_ip6(&rdnss_address), IP6_UNKNOWN, inp); + + if (htonl(rdnss_opt->lifetime) > 0) { + /* TODO implement Lifetime > 0 */ + dns_setserver(rdnss_server_idx++, &rdnss_address); + } else { + /* TODO implement DNS removal in dns.c */ + u8_t s; + for (s = 0; s < DNS_MAX_SERVERS; s++) { + const ip_addr_t *addr = dns_getserver(s); + if(ip_addr_cmp(addr, &rdnss_address)) { + dns_setserver(s, NULL); + } + } + } + } + } + break; + } +#endif /* LWIP_ND6_RDNSS_MAX_DNS_SERVERS */ + default: + /* Unrecognized option, abort. */ + ND6_STATS_INC(nd6.proterr); + break; + } + /* option length is checked earlier to be non-zero to make sure loop ends */ + offset += 8 * (u8_t)option_len8; + } + + break; /* ICMP6_TYPE_RA */ + } + case ICMP6_TYPE_RD: /* Redirect */ + { + struct redirect_header *redir_hdr; + struct lladdr_option *lladdr_opt; + ip6_addr_t destination_address, target_address; + + /* Check that Redir header fits in packet. */ + if (p->len < sizeof(struct redirect_header)) { + /* @todo debug message */ + pbuf_free(p); + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + return; + } + + redir_hdr = (struct redirect_header *)p->payload; + + /* Create an aligned, zoned copy of the destination address. */ + ip6_addr_copy_from_packed(destination_address, redir_hdr->destination_address); + ip6_addr_assign_zone(&destination_address, IP6_UNICAST, inp); + + /* Check a subset of the other RFC 4861 Sec. 8.1 requirements. */ + if (!ip6_addr_islinklocal(ip6_current_src_addr()) || + IP6H_HOPLIM(ip6_current_header()) != ND6_HOPLIM || + redir_hdr->code != 0 || ip6_addr_ismulticast(&destination_address)) { + pbuf_free(p); + ND6_STATS_INC(nd6.proterr); + ND6_STATS_INC(nd6.drop); + return; + } + + /* @todo RFC MUST: IP source address equals first-hop router for destination_address */ + /* @todo RFC MUST: ICMP target address is either link-local address or same as destination_address */ + /* @todo RFC MUST: all included options have a length greater than zero */ + + if (p->len >= (sizeof(struct redirect_header) + 2)) { + lladdr_opt = (struct lladdr_option *)((u8_t*)p->payload + sizeof(struct redirect_header)); + if (p->len < (sizeof(struct redirect_header) + (lladdr_opt->length << 3))) { + lladdr_opt = NULL; + } + } else { + lladdr_opt = NULL; + } + + /* Find dest address in cache */ + dest_idx = nd6_find_destination_cache_entry(&destination_address); + if (dest_idx < 0) { + /* Destination not in cache, drop packet. */ + pbuf_free(p); + return; + } + + /* Create an aligned, zoned copy of the target address. */ + ip6_addr_copy_from_packed(target_address, redir_hdr->target_address); + ip6_addr_assign_zone(&target_address, IP6_UNICAST, inp); + + /* Set the new target address. */ + ip6_addr_copy(destination_cache[dest_idx].next_hop_addr, target_address); + + /* If Link-layer address of other router is given, try to add to neighbor cache. */ + if (lladdr_opt != NULL) { + if (lladdr_opt->type == ND6_OPTION_TYPE_TARGET_LLADDR) { + i = nd6_find_neighbor_cache_entry(&target_address); + if (i < 0) { + i = nd6_new_neighbor_cache_entry(); + if (i >= 0) { + neighbor_cache[i].netif = inp; + MEMCPY(neighbor_cache[i].lladdr, lladdr_opt->addr, inp->hwaddr_len); + ip6_addr_copy(neighbor_cache[i].next_hop_address, target_address); + + /* Receiving a message does not prove reachability: only in one direction. + * Delay probe in case we get confirmation of reachability from upper layer (TCP). */ + neighbor_cache[i].state = ND6_DELAY; + neighbor_cache[i].counter.delay_time = LWIP_ND6_DELAY_FIRST_PROBE_TIME / ND6_TMR_INTERVAL; + } + } + if (i >= 0) { + if (neighbor_cache[i].state == ND6_INCOMPLETE) { + MEMCPY(neighbor_cache[i].lladdr, lladdr_opt->addr, inp->hwaddr_len); + /* Receiving a message does not prove reachability: only in one direction. + * Delay probe in case we get confirmation of reachability from upper layer (TCP). */ + neighbor_cache[i].state = ND6_DELAY; + neighbor_cache[i].counter.delay_time = LWIP_ND6_DELAY_FIRST_PROBE_TIME / ND6_TMR_INTERVAL; + } + } + } + } + break; /* ICMP6_TYPE_RD */ + } + case ICMP6_TYPE_PTB: /* Packet too big */ + { + struct icmp6_hdr *icmp6hdr; /* Packet too big message */ + struct ip6_hdr *ip6hdr; /* IPv6 header of the packet which caused the error */ + u32_t pmtu; + ip6_addr_t destination_address; + + /* Check that ICMPv6 header + IPv6 header fit in payload */ + if (p->len < (sizeof(struct icmp6_hdr) + IP6_HLEN)) { + /* drop short packets */ + pbuf_free(p); + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + return; + } + + icmp6hdr = (struct icmp6_hdr *)p->payload; + ip6hdr = (struct ip6_hdr *)((u8_t*)p->payload + sizeof(struct icmp6_hdr)); + + /* Create an aligned, zoned copy of the destination address. */ + ip6_addr_copy_from_packed(destination_address, ip6hdr->dest); + ip6_addr_assign_zone(&destination_address, IP6_UNKNOWN, inp); + + /* Look for entry in destination cache. */ + dest_idx = nd6_find_destination_cache_entry(&destination_address); + if (dest_idx < 0) { + /* Destination not in cache, drop packet. */ + pbuf_free(p); + return; + } + + /* Change the Path MTU. */ + pmtu = lwip_htonl(icmp6hdr->data); + destination_cache[dest_idx].pmtu = (u16_t)LWIP_MIN(pmtu, 0xFFFF); + + break; /* ICMP6_TYPE_PTB */ + } + + default: + ND6_STATS_INC(nd6.proterr); + ND6_STATS_INC(nd6.drop); + break; /* default */ + } + + pbuf_free(p); + return; +lenerr_drop_free_return: + ND6_STATS_INC(nd6.lenerr); + ND6_STATS_INC(nd6.drop); + pbuf_free(p); +} + + +/** + * Periodic timer for Neighbor discovery functions: + * + * - Update neighbor reachability states + * - Update destination cache entries age + * - Update invalidation timers of default routers and on-link prefixes + * - Update lifetimes of our addresses + * - Perform duplicate address detection (DAD) for our addresses + * - Send router solicitations + */ +void +nd6_tmr(void) +{ + s8_t i; + struct netif *netif; + + /* Process neighbor entries. */ + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + switch (neighbor_cache[i].state) { + case ND6_INCOMPLETE: + if ((neighbor_cache[i].counter.probes_sent >= LWIP_ND6_MAX_MULTICAST_SOLICIT) && + (!neighbor_cache[i].isrouter)) { + /* Retries exceeded. */ + nd6_free_neighbor_cache_entry(i); + } else { + /* Send a NS for this entry. */ + neighbor_cache[i].counter.probes_sent++; + nd6_send_neighbor_cache_probe(&neighbor_cache[i], ND6_SEND_FLAG_MULTICAST_DEST); + } + break; + case ND6_REACHABLE: + /* Send queued packets, if any are left. Should have been sent already. */ + if (neighbor_cache[i].q != NULL) { + nd6_send_q(i); + } + if (neighbor_cache[i].counter.reachable_time <= ND6_TMR_INTERVAL) { + /* Change to stale state. */ + neighbor_cache[i].state = ND6_STALE; + neighbor_cache[i].counter.stale_time = 0; + } else { + neighbor_cache[i].counter.reachable_time -= ND6_TMR_INTERVAL; + } + break; + case ND6_STALE: + neighbor_cache[i].counter.stale_time++; + break; + case ND6_DELAY: + if (neighbor_cache[i].counter.delay_time <= 1) { + /* Change to PROBE state. */ + neighbor_cache[i].state = ND6_PROBE; + neighbor_cache[i].counter.probes_sent = 0; + } else { + neighbor_cache[i].counter.delay_time--; + } + break; + case ND6_PROBE: + if ((neighbor_cache[i].counter.probes_sent >= LWIP_ND6_MAX_MULTICAST_SOLICIT) && + (!neighbor_cache[i].isrouter)) { + /* Retries exceeded. */ + nd6_free_neighbor_cache_entry(i); + } else { + /* Send a NS for this entry. */ + neighbor_cache[i].counter.probes_sent++; + nd6_send_neighbor_cache_probe(&neighbor_cache[i], 0); + } + break; + case ND6_NO_ENTRY: + default: + /* Do nothing. */ + break; + } + } + + /* Process destination entries. */ + for (i = 0; i < LWIP_ND6_NUM_DESTINATIONS; i++) { + destination_cache[i].age++; + } + + /* Process router entries. */ + for (i = 0; i < LWIP_ND6_NUM_ROUTERS; i++) { + if (default_router_list[i].neighbor_entry != NULL) { + /* Active entry. */ + if (default_router_list[i].invalidation_timer <= ND6_TMR_INTERVAL / 1000) { + /* No more than 1 second remaining. Clear this entry. Also clear any of + * its destination cache entries, as per RFC 4861 Sec. 5.3 and 6.3.5. */ + s8_t j; + for (j = 0; j < LWIP_ND6_NUM_DESTINATIONS; j++) { + if (ip6_addr_cmp(&destination_cache[j].next_hop_addr, + &default_router_list[i].neighbor_entry->next_hop_address)) { + ip6_addr_set_any(&destination_cache[j].destination_addr); + } + } + default_router_list[i].neighbor_entry->isrouter = 0; + default_router_list[i].neighbor_entry = NULL; + default_router_list[i].invalidation_timer = 0; + default_router_list[i].flags = 0; + } else { + default_router_list[i].invalidation_timer -= ND6_TMR_INTERVAL / 1000; + } + } + } + + /* Process prefix entries. */ + for (i = 0; i < LWIP_ND6_NUM_PREFIXES; i++) { + if (prefix_list[i].netif != NULL) { + if (prefix_list[i].invalidation_timer <= ND6_TMR_INTERVAL / 1000) { + /* Entry timed out, remove it */ + prefix_list[i].invalidation_timer = 0; + prefix_list[i].netif = NULL; + } else { + prefix_list[i].invalidation_timer -= ND6_TMR_INTERVAL / 1000; + } + } + } + + /* Process our own addresses, updating address lifetimes and/or DAD state. */ + NETIF_FOREACH(netif) { + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; ++i) { + u8_t addr_state; +#if LWIP_IPV6_ADDRESS_LIFETIMES + /* Step 1: update address lifetimes (valid and preferred). */ + addr_state = netif_ip6_addr_state(netif, i); + /* RFC 4862 is not entirely clear as to whether address lifetimes affect + * tentative addresses, and is even less clear as to what should happen + * with duplicate addresses. We choose to track and update lifetimes for + * both those types, although for different reasons: + * - for tentative addresses, the line of thought of Sec. 5.7 combined + * with the potentially long period that an address may be in tentative + * state (due to the interface being down) suggests that lifetimes + * should be independent of external factors which would include DAD; + * - for duplicate addresses, retiring them early could result in a new + * but unwanted attempt at marking them as valid, while retiring them + * late/never could clog up address slots on the netif. + * As a result, we may end up expiring addresses of either type here. + */ + if (!ip6_addr_isinvalid(addr_state) && + !netif_ip6_addr_isstatic(netif, i)) { + u32_t life = netif_ip6_addr_valid_life(netif, i); + if (life <= ND6_TMR_INTERVAL / 1000) { + /* The address has expired. */ + netif_ip6_addr_set_valid_life(netif, i, 0); + netif_ip6_addr_set_pref_life(netif, i, 0); + netif_ip6_addr_set_state(netif, i, IP6_ADDR_INVALID); + } else { + if (!ip6_addr_life_isinfinite(life)) { + life -= ND6_TMR_INTERVAL / 1000; + LWIP_ASSERT("bad valid lifetime", life != IP6_ADDR_LIFE_STATIC); + netif_ip6_addr_set_valid_life(netif, i, life); + } + /* The address is still here. Update the preferred lifetime too. */ + life = netif_ip6_addr_pref_life(netif, i); + if (life <= ND6_TMR_INTERVAL / 1000) { + /* This case must also trigger if 'life' was already zero, so as to + * deal correctly with advertised preferred-lifetime reductions. */ + netif_ip6_addr_set_pref_life(netif, i, 0); + if (addr_state == IP6_ADDR_PREFERRED) + netif_ip6_addr_set_state(netif, i, IP6_ADDR_DEPRECATED); + } else if (!ip6_addr_life_isinfinite(life)) { + life -= ND6_TMR_INTERVAL / 1000; + netif_ip6_addr_set_pref_life(netif, i, life); + } + } + } + /* The address state may now have changed, so reobtain it next. */ +#endif /* LWIP_IPV6_ADDRESS_LIFETIMES */ + /* Step 2: update DAD state. */ + addr_state = netif_ip6_addr_state(netif, i); + if (ip6_addr_istentative(addr_state)) { + if ((addr_state & IP6_ADDR_TENTATIVE_COUNT_MASK) >= LWIP_IPV6_DUP_DETECT_ATTEMPTS) { + /* No NA received in response. Mark address as valid. For dynamic + * addresses with an expired preferred lifetime, the state is set to + * deprecated right away. That should almost never happen, though. */ + addr_state = IP6_ADDR_PREFERRED; +#if LWIP_IPV6_ADDRESS_LIFETIMES + if (!netif_ip6_addr_isstatic(netif, i) && + netif_ip6_addr_pref_life(netif, i) == 0) { + addr_state = IP6_ADDR_DEPRECATED; + } +#endif /* LWIP_IPV6_ADDRESS_LIFETIMES */ + netif_ip6_addr_set_state(netif, i, addr_state); + } else if (netif_is_up(netif) && netif_is_link_up(netif)) { + /* tentative: set next state by increasing by one */ + netif_ip6_addr_set_state(netif, i, addr_state + 1); + /* Send a NS for this address. Use the unspecified address as source + * address in all cases (RFC 4862 Sec. 5.4.2), not in the least + * because as it is, we only consider multicast replies for DAD. */ + nd6_send_ns(netif, netif_ip6_addr(netif, i), + ND6_SEND_FLAG_MULTICAST_DEST | ND6_SEND_FLAG_ANY_SRC); + } + } + } + } + +#if LWIP_IPV6_SEND_ROUTER_SOLICIT + /* Send router solicitation messages, if necessary. */ + if (!nd6_tmr_rs_reduction) { + nd6_tmr_rs_reduction = (ND6_RTR_SOLICITATION_INTERVAL / ND6_TMR_INTERVAL) - 1; + NETIF_FOREACH(netif) { + if ((netif->rs_count > 0) && netif_is_up(netif) && + netif_is_link_up(netif) && + !ip6_addr_isinvalid(netif_ip6_addr_state(netif, 0)) && + !ip6_addr_isduplicated(netif_ip6_addr_state(netif, 0))) { + if (nd6_send_rs(netif) == ERR_OK) { + netif->rs_count--; + } + } + } + } else { + nd6_tmr_rs_reduction--; + } +#endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */ + +} + +/** Send a neighbor solicitation message for a specific neighbor cache entry + * + * @param entry the neightbor cache entry for wich to send the message + * @param flags one of ND6_SEND_FLAG_* + */ +static void +nd6_send_neighbor_cache_probe(struct nd6_neighbor_cache_entry *entry, u8_t flags) +{ + nd6_send_ns(entry->netif, &entry->next_hop_address, flags); +} + +/** + * Send a neighbor solicitation message + * + * @param netif the netif on which to send the message + * @param target_addr the IPv6 target address for the ND message + * @param flags one of ND6_SEND_FLAG_* + */ +static void +nd6_send_ns(struct netif *netif, const ip6_addr_t *target_addr, u8_t flags) +{ + struct ns_header *ns_hdr; + struct pbuf *p; + const ip6_addr_t *src_addr; + u16_t lladdr_opt_len; + + LWIP_ASSERT("target address is required", target_addr != NULL); + + if (!(flags & ND6_SEND_FLAG_ANY_SRC) && + ip6_addr_isvalid(netif_ip6_addr_state(netif,0))) { + /* Use link-local address as source address. */ + src_addr = netif_ip6_addr(netif, 0); + /* calculate option length (in 8-byte-blocks) */ + lladdr_opt_len = ((netif->hwaddr_len + 2) + 7) >> 3; + } else { + src_addr = IP6_ADDR_ANY6; + /* Option "MUST NOT be included when the source IP address is the unspecified address." */ + lladdr_opt_len = 0; + } + + /* Allocate a packet. */ + p = pbuf_alloc(PBUF_IP, sizeof(struct ns_header) + (lladdr_opt_len << 3), PBUF_RAM); + if (p == NULL) { + ND6_STATS_INC(nd6.memerr); + return; + } + + /* Set fields. */ + ns_hdr = (struct ns_header *)p->payload; + + ns_hdr->type = ICMP6_TYPE_NS; + ns_hdr->code = 0; + ns_hdr->chksum = 0; + ns_hdr->reserved = 0; + ip6_addr_copy_to_packed(ns_hdr->target_address, *target_addr); + + if (lladdr_opt_len != 0) { + struct lladdr_option *lladdr_opt = (struct lladdr_option *)((u8_t*)p->payload + sizeof(struct ns_header)); + lladdr_opt->type = ND6_OPTION_TYPE_SOURCE_LLADDR; + lladdr_opt->length = (u8_t)lladdr_opt_len; + SMEMCPY(lladdr_opt->addr, netif->hwaddr, netif->hwaddr_len); + } + + /* Generate the solicited node address for the target address. */ + if (flags & ND6_SEND_FLAG_MULTICAST_DEST) { + ip6_addr_set_solicitednode(&multicast_address, target_addr->addr[3]); + ip6_addr_assign_zone(&multicast_address, IP6_MULTICAST, netif); + target_addr = &multicast_address; + } + +#if CHECKSUM_GEN_ICMP6 + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_ICMP6) { + ns_hdr->chksum = ip6_chksum_pseudo(p, IP6_NEXTH_ICMP6, p->len, src_addr, + target_addr); + } +#endif /* CHECKSUM_GEN_ICMP6 */ + + /* Send the packet out. */ + ND6_STATS_INC(nd6.xmit); + ip6_output_if(p, (src_addr == IP6_ADDR_ANY6) ? NULL : src_addr, target_addr, + ND6_HOPLIM, 0, IP6_NEXTH_ICMP6, netif); + pbuf_free(p); +} + +/** + * Send a neighbor advertisement message + * + * @param netif the netif on which to send the message + * @param target_addr the IPv6 target address for the ND message + * @param flags one of ND6_SEND_FLAG_* + */ +static void +nd6_send_na(struct netif *netif, const ip6_addr_t *target_addr, u8_t flags) +{ + struct na_header *na_hdr; + struct lladdr_option *lladdr_opt; + struct pbuf *p; + const ip6_addr_t *src_addr; + const ip6_addr_t *dest_addr; + u16_t lladdr_opt_len; + + LWIP_ASSERT("target address is required", target_addr != NULL); + + /* Use link-local address as source address. */ + /* src_addr = netif_ip6_addr(netif, 0); */ + /* Use target address as source address. */ + src_addr = target_addr; + + /* Allocate a packet. */ + lladdr_opt_len = ((netif->hwaddr_len + 2) >> 3) + (((netif->hwaddr_len + 2) & 0x07) ? 1 : 0); + p = pbuf_alloc(PBUF_IP, sizeof(struct na_header) + (lladdr_opt_len << 3), PBUF_RAM); + if (p == NULL) { + ND6_STATS_INC(nd6.memerr); + return; + } + + /* Set fields. */ + na_hdr = (struct na_header *)p->payload; + lladdr_opt = (struct lladdr_option *)((u8_t*)p->payload + sizeof(struct na_header)); + + na_hdr->type = ICMP6_TYPE_NA; + na_hdr->code = 0; + na_hdr->chksum = 0; + na_hdr->flags = flags & 0xf0; + na_hdr->reserved[0] = 0; + na_hdr->reserved[1] = 0; + na_hdr->reserved[2] = 0; + ip6_addr_copy_to_packed(na_hdr->target_address, *target_addr); + + lladdr_opt->type = ND6_OPTION_TYPE_TARGET_LLADDR; + lladdr_opt->length = (u8_t)lladdr_opt_len; + SMEMCPY(lladdr_opt->addr, netif->hwaddr, netif->hwaddr_len); + + /* Generate the solicited node address for the target address. */ + if (flags & ND6_SEND_FLAG_MULTICAST_DEST) { + ip6_addr_set_solicitednode(&multicast_address, target_addr->addr[3]); + ip6_addr_assign_zone(&multicast_address, IP6_MULTICAST, netif); + dest_addr = &multicast_address; + } else if (flags & ND6_SEND_FLAG_ALLNODES_DEST) { + ip6_addr_set_allnodes_linklocal(&multicast_address); + ip6_addr_assign_zone(&multicast_address, IP6_MULTICAST, netif); + dest_addr = &multicast_address; + } else { + dest_addr = ip6_current_src_addr(); + } + +#if CHECKSUM_GEN_ICMP6 + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_ICMP6) { + na_hdr->chksum = ip6_chksum_pseudo(p, IP6_NEXTH_ICMP6, p->len, src_addr, + dest_addr); + } +#endif /* CHECKSUM_GEN_ICMP6 */ + + /* Send the packet out. */ + ND6_STATS_INC(nd6.xmit); + ip6_output_if(p, src_addr, dest_addr, + ND6_HOPLIM, 0, IP6_NEXTH_ICMP6, netif); + pbuf_free(p); +} + +#if LWIP_IPV6_SEND_ROUTER_SOLICIT +/** + * Send a router solicitation message + * + * @param netif the netif on which to send the message + */ +static err_t +nd6_send_rs(struct netif *netif) +{ + struct rs_header *rs_hdr; + struct lladdr_option *lladdr_opt; + struct pbuf *p; + const ip6_addr_t *src_addr; + err_t err; + u16_t lladdr_opt_len = 0; + + /* Link-local source address, or unspecified address? */ + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, 0))) { + src_addr = netif_ip6_addr(netif, 0); + } else { + src_addr = IP6_ADDR_ANY6; + } + + /* Generate the all routers target address. */ + ip6_addr_set_allrouters_linklocal(&multicast_address); + ip6_addr_assign_zone(&multicast_address, IP6_MULTICAST, netif); + + /* Allocate a packet. */ + if (src_addr != IP6_ADDR_ANY6) { + lladdr_opt_len = ((netif->hwaddr_len + 2) >> 3) + (((netif->hwaddr_len + 2) & 0x07) ? 1 : 0); + } + p = pbuf_alloc(PBUF_IP, sizeof(struct rs_header) + (lladdr_opt_len << 3), PBUF_RAM); + if (p == NULL) { + ND6_STATS_INC(nd6.memerr); + return ERR_BUF; + } + + /* Set fields. */ + rs_hdr = (struct rs_header *)p->payload; + + rs_hdr->type = ICMP6_TYPE_RS; + rs_hdr->code = 0; + rs_hdr->chksum = 0; + rs_hdr->reserved = 0; + + if (src_addr != IP6_ADDR_ANY6) { + /* Include our hw address. */ + lladdr_opt = (struct lladdr_option *)((u8_t*)p->payload + sizeof(struct rs_header)); + lladdr_opt->type = ND6_OPTION_TYPE_SOURCE_LLADDR; + lladdr_opt->length = (u8_t)lladdr_opt_len; + SMEMCPY(lladdr_opt->addr, netif->hwaddr, netif->hwaddr_len); + } + +#if CHECKSUM_GEN_ICMP6 + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_ICMP6) { + rs_hdr->chksum = ip6_chksum_pseudo(p, IP6_NEXTH_ICMP6, p->len, src_addr, + &multicast_address); + } +#endif /* CHECKSUM_GEN_ICMP6 */ + + /* Send the packet out. */ + ND6_STATS_INC(nd6.xmit); + + err = ip6_output_if(p, (src_addr == IP6_ADDR_ANY6) ? NULL : src_addr, &multicast_address, + ND6_HOPLIM, 0, IP6_NEXTH_ICMP6, netif); + pbuf_free(p); + + return err; +} +#endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */ + +/** + * Search for a neighbor cache entry + * + * @param ip6addr the IPv6 address of the neighbor + * @return The neighbor cache entry index that matched, -1 if no + * entry is found + */ +static s8_t +nd6_find_neighbor_cache_entry(const ip6_addr_t *ip6addr) +{ + s8_t i; + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + if (ip6_addr_cmp(ip6addr, &(neighbor_cache[i].next_hop_address))) { + return i; + } + } + return -1; +} + +/** + * Create a new neighbor cache entry. + * + * If no unused entry is found, will try to recycle an old entry + * according to ad-hoc "age" heuristic. + * + * @return The neighbor cache entry index that was created, -1 if no + * entry could be created + */ +static s8_t +nd6_new_neighbor_cache_entry(void) +{ + s8_t i; + s8_t j; + u32_t time; + + + /* First, try to find an empty entry. */ + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + if (neighbor_cache[i].state == ND6_NO_ENTRY) { + return i; + } + } + + /* We need to recycle an entry. in general, do not recycle if it is a router. */ + + /* Next, try to find a Stale entry. */ + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + if ((neighbor_cache[i].state == ND6_STALE) && + (!neighbor_cache[i].isrouter)) { + nd6_free_neighbor_cache_entry(i); + return i; + } + } + + /* Next, try to find a Probe entry. */ + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + if ((neighbor_cache[i].state == ND6_PROBE) && + (!neighbor_cache[i].isrouter)) { + nd6_free_neighbor_cache_entry(i); + return i; + } + } + + /* Next, try to find a Delayed entry. */ + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + if ((neighbor_cache[i].state == ND6_DELAY) && + (!neighbor_cache[i].isrouter)) { + nd6_free_neighbor_cache_entry(i); + return i; + } + } + + /* Next, try to find the oldest reachable entry. */ + time = 0xfffffffful; + j = -1; + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + if ((neighbor_cache[i].state == ND6_REACHABLE) && + (!neighbor_cache[i].isrouter)) { + if (neighbor_cache[i].counter.reachable_time < time) { + j = i; + time = neighbor_cache[i].counter.reachable_time; + } + } + } + if (j >= 0) { + nd6_free_neighbor_cache_entry(j); + return j; + } + + /* Next, find oldest incomplete entry without queued packets. */ + time = 0; + j = -1; + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + if ( + (neighbor_cache[i].q == NULL) && + (neighbor_cache[i].state == ND6_INCOMPLETE) && + (!neighbor_cache[i].isrouter)) { + if (neighbor_cache[i].counter.probes_sent >= time) { + j = i; + time = neighbor_cache[i].counter.probes_sent; + } + } + } + if (j >= 0) { + nd6_free_neighbor_cache_entry(j); + return j; + } + + /* Next, find oldest incomplete entry with queued packets. */ + time = 0; + j = -1; + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + if ((neighbor_cache[i].state == ND6_INCOMPLETE) && + (!neighbor_cache[i].isrouter)) { + if (neighbor_cache[i].counter.probes_sent >= time) { + j = i; + time = neighbor_cache[i].counter.probes_sent; + } + } + } + if (j >= 0) { + nd6_free_neighbor_cache_entry(j); + return j; + } + + /* No more entries to try. */ + return -1; +} + +/** + * Will free any resources associated with a neighbor cache + * entry, and will mark it as unused. + * + * @param i the neighbor cache entry index to free + */ +static void +nd6_free_neighbor_cache_entry(s8_t i) +{ + if ((i < 0) || (i >= LWIP_ND6_NUM_NEIGHBORS)) { + return; + } + if (neighbor_cache[i].isrouter) { + /* isrouter needs to be cleared before deleting a neighbor cache entry */ + return; + } + + /* Free any queued packets. */ + if (neighbor_cache[i].q != NULL) { + nd6_free_q(neighbor_cache[i].q); + neighbor_cache[i].q = NULL; + } + + neighbor_cache[i].state = ND6_NO_ENTRY; + neighbor_cache[i].isrouter = 0; + neighbor_cache[i].netif = NULL; + neighbor_cache[i].counter.reachable_time = 0; + ip6_addr_set_zero(&(neighbor_cache[i].next_hop_address)); +} + +/** + * Search for a destination cache entry + * + * @param ip6addr the IPv6 address of the destination + * @return The destination cache entry index that matched, -1 if no + * entry is found + */ +static s16_t +nd6_find_destination_cache_entry(const ip6_addr_t *ip6addr) +{ + s16_t i; + + IP6_ADDR_ZONECHECK(ip6addr); + + for (i = 0; i < LWIP_ND6_NUM_DESTINATIONS; i++) { + if (ip6_addr_cmp(ip6addr, &(destination_cache[i].destination_addr))) { + return i; + } + } + return -1; +} + +/** + * Create a new destination cache entry. If no unused entry is found, + * will recycle oldest entry. + * + * @return The destination cache entry index that was created, -1 if no + * entry was created + */ +static s16_t +nd6_new_destination_cache_entry(void) +{ + s16_t i, j; + u32_t age; + + /* Find an empty entry. */ + for (i = 0; i < LWIP_ND6_NUM_DESTINATIONS; i++) { + if (ip6_addr_isany(&(destination_cache[i].destination_addr))) { + return i; + } + } + + /* Find oldest entry. */ + age = 0; + j = LWIP_ND6_NUM_DESTINATIONS - 1; + for (i = 0; i < LWIP_ND6_NUM_DESTINATIONS; i++) { + if (destination_cache[i].age > age) { + j = i; + } + } + + return j; +} + +/** + * Clear the destination cache. + * + * This operation may be necessary for consistency in the light of changing + * local addresses and/or use of the gateway hook. + */ +void +nd6_clear_destination_cache(void) +{ + int i; + + for (i = 0; i < LWIP_ND6_NUM_DESTINATIONS; i++) { + ip6_addr_set_any(&destination_cache[i].destination_addr); + } +} + +/** + * Determine whether an address matches an on-link prefix or the subnet of a + * statically assigned address. + * + * @param ip6addr the IPv6 address to match + * @return 1 if the address is on-link, 0 otherwise + */ +static int +nd6_is_prefix_in_netif(const ip6_addr_t *ip6addr, struct netif *netif) +{ + s8_t i; + + /* Check to see if the address matches an on-link prefix. */ + for (i = 0; i < LWIP_ND6_NUM_PREFIXES; i++) { + if ((prefix_list[i].netif == netif) && + (prefix_list[i].invalidation_timer > 0) && + ip6_addr_netcmp(ip6addr, &(prefix_list[i].prefix))) { + return 1; + } + } + /* Check to see if address prefix matches a manually configured (= static) + * address. Static addresses have an implied /64 subnet assignment. Dynamic + * addresses (from autoconfiguration) have no implied subnet assignment, and + * are thus effectively /128 assignments. See RFC 5942 for more on this. */ + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && + netif_ip6_addr_isstatic(netif, i) && + ip6_addr_netcmp(ip6addr, netif_ip6_addr(netif, i))) { + return 1; + } + } + return 0; +} + +/** + * Select a default router for a destination. + * + * This function is used both for routing and for finding a next-hop target for + * a packet. In the former case, the given netif is NULL, and the returned + * router entry must be for a netif suitable for sending packets (up, link up). + * In the latter case, the given netif is not NULL and restricts router choice. + * + * @param ip6addr the destination address + * @param netif the netif for the outgoing packet, if known + * @return the default router entry index, or -1 if no suitable + * router is found + */ +static s8_t +nd6_select_router(const ip6_addr_t *ip6addr, struct netif *netif) +{ + struct netif *router_netif; + s8_t i, j, valid_router; + static s8_t last_router; + + LWIP_UNUSED_ARG(ip6addr); /* @todo match preferred routes!! (must implement ND6_OPTION_TYPE_ROUTE_INFO) */ + + /* @todo: implement default router preference */ + + /* Look for valid routers. A reachable router is preferred. */ + valid_router = -1; + for (i = 0; i < LWIP_ND6_NUM_ROUTERS; i++) { + /* Is the router netif both set and apppropriate? */ + if (default_router_list[i].neighbor_entry != NULL) { + router_netif = default_router_list[i].neighbor_entry->netif; + if ((router_netif != NULL) && (netif != NULL ? netif == router_netif : + (netif_is_up(router_netif) && netif_is_link_up(router_netif)))) { + /* Is the router valid, i.e., reachable or probably reachable as per + * RFC 4861 Sec. 6.3.6? Note that we will never return a router that + * has no neighbor cache entry, due to the netif association tests. */ + if (default_router_list[i].neighbor_entry->state != ND6_INCOMPLETE) { + /* Is the router known to be reachable? */ + if (default_router_list[i].neighbor_entry->state == ND6_REACHABLE) { + return i; /* valid and reachable - done! */ + } else if (valid_router < 0) { + valid_router = i; /* valid but not known to be reachable */ + } + } + } + } + } + if (valid_router >= 0) { + return valid_router; + } + + /* Look for any router for which we have any information at all. */ + /* last_router is used for round-robin selection of incomplete routers, as + * recommended in RFC 4861 Sec. 6.3.6 point (2). Advance only when picking a + * route, to select the same router as next-hop target in the common case. */ + if ((netif == NULL) && (++last_router >= LWIP_ND6_NUM_ROUTERS)) { + last_router = 0; + } + i = last_router; + for (j = 0; j < LWIP_ND6_NUM_ROUTERS; j++) { + if (default_router_list[i].neighbor_entry != NULL) { + router_netif = default_router_list[i].neighbor_entry->netif; + if ((router_netif != NULL) && (netif != NULL ? netif == router_netif : + (netif_is_up(router_netif) && netif_is_link_up(router_netif)))) { + return i; + } + } + if (++i >= LWIP_ND6_NUM_ROUTERS) { + i = 0; + } + } + + /* no suitable router found. */ + return -1; +} + +/** + * Find a router-announced route to the given destination. This route may be + * based on an on-link prefix or a default router. + * + * If a suitable route is found, the returned netif is guaranteed to be in a + * suitable state (up, link up) to be used for packet transmission. + * + * @param ip6addr the destination IPv6 address + * @return the netif to use for the destination, or NULL if none found + */ +struct netif * +nd6_find_route(const ip6_addr_t *ip6addr) +{ + struct netif *netif; + s8_t i; + + /* @todo decide if it makes sense to check the destination cache first */ + + /* Check if there is a matching on-link prefix. There may be multiple + * matches. Pick the first one that is associated with a suitable netif. */ + for (i = 0; i < LWIP_ND6_NUM_PREFIXES; ++i) { + netif = prefix_list[i].netif; + if ((netif != NULL) && ip6_addr_netcmp(&prefix_list[i].prefix, ip6addr) && + netif_is_up(netif) && netif_is_link_up(netif)) { + return netif; + } + } + + /* No on-link prefix match. Find a router that can forward the packet. */ + i = nd6_select_router(ip6addr, NULL); + if (i >= 0) { + LWIP_ASSERT("selected router must have a neighbor entry", + default_router_list[i].neighbor_entry != NULL); + return default_router_list[i].neighbor_entry->netif; + } + + return NULL; +} + +/** + * Find an entry for a default router. + * + * @param router_addr the IPv6 address of the router + * @param netif the netif on which the router is found, if known + * @return the index of the router entry, or -1 if not found + */ +static s8_t +nd6_get_router(const ip6_addr_t *router_addr, struct netif *netif) +{ + s8_t i; + + IP6_ADDR_ZONECHECK_NETIF(router_addr, netif); + + /* Look for router. */ + for (i = 0; i < LWIP_ND6_NUM_ROUTERS; i++) { + if ((default_router_list[i].neighbor_entry != NULL) && + ((netif != NULL) ? netif == default_router_list[i].neighbor_entry->netif : 1) && + ip6_addr_cmp(router_addr, &(default_router_list[i].neighbor_entry->next_hop_address))) { + return i; + } + } + + /* router not found. */ + return -1; +} + +/** + * Create a new entry for a default router. + * + * @param router_addr the IPv6 address of the router + * @param netif the netif on which the router is connected, if known + * @return the index on the router table, or -1 if could not be created + */ +static s8_t +nd6_new_router(const ip6_addr_t *router_addr, struct netif *netif) +{ + s8_t router_index; + s8_t free_router_index; + s8_t neighbor_index; + + IP6_ADDR_ZONECHECK_NETIF(router_addr, netif); + + /* Do we have a neighbor entry for this router? */ + neighbor_index = nd6_find_neighbor_cache_entry(router_addr); + if (neighbor_index < 0) { + /* Create a neighbor entry for this router. */ + neighbor_index = nd6_new_neighbor_cache_entry(); + if (neighbor_index < 0) { + /* Could not create neighbor entry for this router. */ + return -1; + } + ip6_addr_set(&(neighbor_cache[neighbor_index].next_hop_address), router_addr); + neighbor_cache[neighbor_index].netif = netif; + neighbor_cache[neighbor_index].q = NULL; + neighbor_cache[neighbor_index].state = ND6_INCOMPLETE; + neighbor_cache[neighbor_index].counter.probes_sent = 1; + nd6_send_neighbor_cache_probe(&neighbor_cache[neighbor_index], ND6_SEND_FLAG_MULTICAST_DEST); + } + + /* Mark neighbor as router. */ + neighbor_cache[neighbor_index].isrouter = 1; + + /* Look for empty entry. */ + free_router_index = LWIP_ND6_NUM_ROUTERS; + for (router_index = LWIP_ND6_NUM_ROUTERS - 1; router_index >= 0; router_index--) { + /* check if router already exists (this is a special case for 2 netifs on the same subnet + - e.g. wifi and cable) */ + if(default_router_list[router_index].neighbor_entry == &(neighbor_cache[neighbor_index])){ + return router_index; + } + if (default_router_list[router_index].neighbor_entry == NULL) { + /* remember lowest free index to create a new entry */ + free_router_index = router_index; + } + } + if (free_router_index < LWIP_ND6_NUM_ROUTERS) { + default_router_list[free_router_index].neighbor_entry = &(neighbor_cache[neighbor_index]); + return free_router_index; + } + + /* Could not create a router entry. */ + + /* Mark neighbor entry as not-router. Entry might be useful as neighbor still. */ + neighbor_cache[neighbor_index].isrouter = 0; + + /* router not found. */ + return -1; +} + +/** + * Find the cached entry for an on-link prefix. + * + * @param prefix the IPv6 prefix that is on-link + * @param netif the netif on which the prefix is on-link + * @return the index on the prefix table, or -1 if not found + */ +static s8_t +nd6_get_onlink_prefix(const ip6_addr_t *prefix, struct netif *netif) +{ + s8_t i; + + /* Look for prefix in list. */ + for (i = 0; i < LWIP_ND6_NUM_PREFIXES; ++i) { + if ((ip6_addr_netcmp(&(prefix_list[i].prefix), prefix)) && + (prefix_list[i].netif == netif)) { + return i; + } + } + + /* Entry not available. */ + return -1; +} + +/** + * Creates a new entry for an on-link prefix. + * + * @param prefix the IPv6 prefix that is on-link + * @param netif the netif on which the prefix is on-link + * @return the index on the prefix table, or -1 if not created + */ +static s8_t +nd6_new_onlink_prefix(const ip6_addr_t *prefix, struct netif *netif) +{ + s8_t i; + + /* Create new entry. */ + for (i = 0; i < LWIP_ND6_NUM_PREFIXES; ++i) { + if ((prefix_list[i].netif == NULL) || + (prefix_list[i].invalidation_timer == 0)) { + /* Found empty prefix entry. */ + prefix_list[i].netif = netif; + ip6_addr_set(&(prefix_list[i].prefix), prefix); + return i; + } + } + + /* Entry not available. */ + return -1; +} + +/** + * Determine the next hop for a destination. Will determine if the + * destination is on-link, else a suitable on-link router is selected. + * + * The last entry index is cached for fast entry search. + * + * @param ip6addr the destination address + * @param netif the netif on which the packet will be sent + * @return the neighbor cache entry for the next hop, ERR_RTE if no + * suitable next hop was found, ERR_MEM if no cache entry + * could be created + */ +static s8_t +nd6_get_next_hop_entry(const ip6_addr_t *ip6addr, struct netif *netif) +{ +#ifdef LWIP_HOOK_ND6_GET_GW + const ip6_addr_t *next_hop_addr; +#endif /* LWIP_HOOK_ND6_GET_GW */ + s8_t i; + s16_t dst_idx; + + IP6_ADDR_ZONECHECK_NETIF(ip6addr, netif); + +#if LWIP_NETIF_HWADDRHINT + if (netif->hints != NULL) { + /* per-pcb cached entry was given */ + netif_addr_idx_t addr_hint = netif->hints->addr_hint; + if (addr_hint < LWIP_ND6_NUM_DESTINATIONS) { + nd6_cached_destination_index = addr_hint; + } + } +#endif /* LWIP_NETIF_HWADDRHINT */ + + /* Look for ip6addr in destination cache. */ + if (ip6_addr_cmp(ip6addr, &(destination_cache[nd6_cached_destination_index].destination_addr))) { + /* the cached entry index is the right one! */ + /* do nothing. */ + ND6_STATS_INC(nd6.cachehit); + } else { + /* Search destination cache. */ + dst_idx = nd6_find_destination_cache_entry(ip6addr); + if (dst_idx >= 0) { + /* found destination entry. make it our new cached index. */ + LWIP_ASSERT("type overflow", (size_t)dst_idx < NETIF_ADDR_IDX_MAX); + nd6_cached_destination_index = (netif_addr_idx_t)dst_idx; + } else { + /* Not found. Create a new destination entry. */ + dst_idx = nd6_new_destination_cache_entry(); + if (dst_idx >= 0) { + /* got new destination entry. make it our new cached index. */ + LWIP_ASSERT("type overflow", (size_t)dst_idx < NETIF_ADDR_IDX_MAX); + nd6_cached_destination_index = (netif_addr_idx_t)dst_idx; + } else { + /* Could not create a destination cache entry. */ + return ERR_MEM; + } + + /* Copy dest address to destination cache. */ + ip6_addr_set(&(destination_cache[nd6_cached_destination_index].destination_addr), ip6addr); + + /* Now find the next hop. is it a neighbor? */ + if (ip6_addr_islinklocal(ip6addr) || + nd6_is_prefix_in_netif(ip6addr, netif)) { + /* Destination in local link. */ + destination_cache[nd6_cached_destination_index].pmtu = netif_mtu6(netif); + ip6_addr_copy(destination_cache[nd6_cached_destination_index].next_hop_addr, destination_cache[nd6_cached_destination_index].destination_addr); +#ifdef LWIP_HOOK_ND6_GET_GW + } else if ((next_hop_addr = LWIP_HOOK_ND6_GET_GW(netif, ip6addr)) != NULL) { + /* Next hop for destination provided by hook function. */ + destination_cache[nd6_cached_destination_index].pmtu = netif->mtu; + ip6_addr_set(&destination_cache[nd6_cached_destination_index].next_hop_addr, next_hop_addr); +#endif /* LWIP_HOOK_ND6_GET_GW */ + } else { + /* We need to select a router. */ + i = nd6_select_router(ip6addr, netif); + if (i < 0) { + /* No router found. */ + ip6_addr_set_any(&(destination_cache[nd6_cached_destination_index].destination_addr)); + return ERR_RTE; + } + destination_cache[nd6_cached_destination_index].pmtu = netif_mtu6(netif); /* Start with netif mtu, correct through ICMPv6 if necessary */ + ip6_addr_copy(destination_cache[nd6_cached_destination_index].next_hop_addr, default_router_list[i].neighbor_entry->next_hop_address); + } + } + } + +#if LWIP_NETIF_HWADDRHINT + if (netif->hints != NULL) { + /* per-pcb cached entry was given */ + netif->hints->addr_hint = nd6_cached_destination_index; + } +#endif /* LWIP_NETIF_HWADDRHINT */ + + /* Look in neighbor cache for the next-hop address. */ + if (ip6_addr_cmp(&(destination_cache[nd6_cached_destination_index].next_hop_addr), + &(neighbor_cache[nd6_cached_neighbor_index].next_hop_address))) { + /* Cache hit. */ + /* Do nothing. */ + ND6_STATS_INC(nd6.cachehit); + } else { + i = nd6_find_neighbor_cache_entry(&(destination_cache[nd6_cached_destination_index].next_hop_addr)); + if (i >= 0) { + /* Found a matching record, make it new cached entry. */ + nd6_cached_neighbor_index = i; + } else { + /* Neighbor not in cache. Make a new entry. */ + i = nd6_new_neighbor_cache_entry(); + if (i >= 0) { + /* got new neighbor entry. make it our new cached index. */ + nd6_cached_neighbor_index = i; + } else { + /* Could not create a neighbor cache entry. */ + return ERR_MEM; + } + + /* Initialize fields. */ + ip6_addr_copy(neighbor_cache[i].next_hop_address, + destination_cache[nd6_cached_destination_index].next_hop_addr); + neighbor_cache[i].isrouter = 0; + neighbor_cache[i].netif = netif; + neighbor_cache[i].state = ND6_INCOMPLETE; + neighbor_cache[i].counter.probes_sent = 1; + nd6_send_neighbor_cache_probe(&neighbor_cache[i], ND6_SEND_FLAG_MULTICAST_DEST); + } + } + + /* Reset this destination's age. */ + destination_cache[nd6_cached_destination_index].age = 0; + + return nd6_cached_neighbor_index; +} + +/** + * Queue a packet for a neighbor. + * + * @param neighbor_index the index in the neighbor cache table + * @param q packet to be queued + * @return ERR_OK if succeeded, ERR_MEM if out of memory + */ +static err_t +nd6_queue_packet(s8_t neighbor_index, struct pbuf *q) +{ + err_t result = ERR_MEM; + struct pbuf *p; + int copy_needed = 0; +#if LWIP_ND6_QUEUEING + struct nd6_q_entry *new_entry, *r; +#endif /* LWIP_ND6_QUEUEING */ + + if ((neighbor_index < 0) || (neighbor_index >= LWIP_ND6_NUM_NEIGHBORS)) { + return ERR_ARG; + } + + /* IF q includes a pbuf that must be copied, we have to copy the whole chain + * into a new PBUF_RAM. See the definition of PBUF_NEEDS_COPY for details. */ + p = q; + while (p) { + if (PBUF_NEEDS_COPY(p)) { + copy_needed = 1; + break; + } + p = p->next; + } + if (copy_needed) { + /* copy the whole packet into new pbufs */ + p = pbuf_clone(PBUF_LINK, PBUF_RAM, q); + while ((p == NULL) && (neighbor_cache[neighbor_index].q != NULL)) { + /* Free oldest packet (as per RFC recommendation) */ +#if LWIP_ND6_QUEUEING + r = neighbor_cache[neighbor_index].q; + neighbor_cache[neighbor_index].q = r->next; + r->next = NULL; + nd6_free_q(r); +#else /* LWIP_ND6_QUEUEING */ + pbuf_free(neighbor_cache[neighbor_index].q); + neighbor_cache[neighbor_index].q = NULL; +#endif /* LWIP_ND6_QUEUEING */ + p = pbuf_clone(PBUF_LINK, PBUF_RAM, q); + } + } else { + /* referencing the old pbuf is enough */ + p = q; + pbuf_ref(p); + } + /* packet was copied/ref'd? */ + if (p != NULL) { + /* queue packet ... */ +#if LWIP_ND6_QUEUEING + /* allocate a new nd6 queue entry */ + new_entry = (struct nd6_q_entry *)memp_malloc(MEMP_ND6_QUEUE); + if ((new_entry == NULL) && (neighbor_cache[neighbor_index].q != NULL)) { + /* Free oldest packet (as per RFC recommendation) */ + r = neighbor_cache[neighbor_index].q; + neighbor_cache[neighbor_index].q = r->next; + r->next = NULL; + nd6_free_q(r); + new_entry = (struct nd6_q_entry *)memp_malloc(MEMP_ND6_QUEUE); + } + if (new_entry != NULL) { + new_entry->next = NULL; + new_entry->p = p; + if (neighbor_cache[neighbor_index].q != NULL) { + /* queue was already existent, append the new entry to the end */ + r = neighbor_cache[neighbor_index].q; + while (r->next != NULL) { + r = r->next; + } + r->next = new_entry; + } else { + /* queue did not exist, first item in queue */ + neighbor_cache[neighbor_index].q = new_entry; + } + LWIP_DEBUGF(LWIP_DBG_TRACE, ("ipv6: queued packet %p on neighbor entry %"S16_F"\n", (void *)p, (s16_t)neighbor_index)); + result = ERR_OK; + } else { + /* the pool MEMP_ND6_QUEUE is empty */ + pbuf_free(p); + LWIP_DEBUGF(LWIP_DBG_TRACE, ("ipv6: could not queue a copy of packet %p (out of memory)\n", (void *)p)); + /* { result == ERR_MEM } through initialization */ + } +#else /* LWIP_ND6_QUEUEING */ + /* Queue a single packet. If an older packet is already queued, free it as per RFC. */ + if (neighbor_cache[neighbor_index].q != NULL) { + pbuf_free(neighbor_cache[neighbor_index].q); + } + neighbor_cache[neighbor_index].q = p; + LWIP_DEBUGF(LWIP_DBG_TRACE, ("ipv6: queued packet %p on neighbor entry %"S16_F"\n", (void *)p, (s16_t)neighbor_index)); + result = ERR_OK; +#endif /* LWIP_ND6_QUEUEING */ + } else { + LWIP_DEBUGF(LWIP_DBG_TRACE, ("ipv6: could not queue a copy of packet %p (out of memory)\n", (void *)q)); + /* { result == ERR_MEM } through initialization */ + } + + return result; +} + +#if LWIP_ND6_QUEUEING +/** + * Free a complete queue of nd6 q entries + * + * @param q a queue of nd6_q_entry to free + */ +static void +nd6_free_q(struct nd6_q_entry *q) +{ + struct nd6_q_entry *r; + LWIP_ASSERT("q != NULL", q != NULL); + LWIP_ASSERT("q->p != NULL", q->p != NULL); + while (q) { + r = q; + q = q->next; + LWIP_ASSERT("r->p != NULL", (r->p != NULL)); + pbuf_free(r->p); + memp_free(MEMP_ND6_QUEUE, r); + } +} +#endif /* LWIP_ND6_QUEUEING */ + +/** + * Send queued packets for a neighbor + * + * @param i the neighbor to send packets to + */ +static void +nd6_send_q(s8_t i) +{ + struct ip6_hdr *ip6hdr; + ip6_addr_t dest; +#if LWIP_ND6_QUEUEING + struct nd6_q_entry *q; +#endif /* LWIP_ND6_QUEUEING */ + + if ((i < 0) || (i >= LWIP_ND6_NUM_NEIGHBORS)) { + return; + } + +#if LWIP_ND6_QUEUEING + while (neighbor_cache[i].q != NULL) { + /* remember first in queue */ + q = neighbor_cache[i].q; + /* pop first item off the queue */ + neighbor_cache[i].q = q->next; + /* Get ipv6 header. */ + ip6hdr = (struct ip6_hdr *)(q->p->payload); + /* Create an aligned copy. */ + ip6_addr_copy_from_packed(dest, ip6hdr->dest); + /* Restore the zone, if applicable. */ + ip6_addr_assign_zone(&dest, IP6_UNKNOWN, neighbor_cache[i].netif); + /* send the queued IPv6 packet */ + (neighbor_cache[i].netif)->output_ip6(neighbor_cache[i].netif, q->p, &dest); + /* free the queued IP packet */ + pbuf_free(q->p); + /* now queue entry can be freed */ + memp_free(MEMP_ND6_QUEUE, q); + } +#else /* LWIP_ND6_QUEUEING */ + if (neighbor_cache[i].q != NULL) { + /* Get ipv6 header. */ + ip6hdr = (struct ip6_hdr *)(neighbor_cache[i].q->payload); + /* Create an aligned copy. */ + ip6_addr_copy_from_packed(dest, ip6hdr->dest); + /* Restore the zone, if applicable. */ + ip6_addr_assign_zone(&dest, IP6_UNKNOWN, neighbor_cache[i].netif); + /* send the queued IPv6 packet */ + (neighbor_cache[i].netif)->output_ip6(neighbor_cache[i].netif, neighbor_cache[i].q, &dest); + /* free the queued IP packet */ + pbuf_free(neighbor_cache[i].q); + neighbor_cache[i].q = NULL; + } +#endif /* LWIP_ND6_QUEUEING */ +} + +/** + * A packet is to be transmitted to a specific IPv6 destination on a specific + * interface. Check if we can find the hardware address of the next hop to use + * for the packet. If so, give the hardware address to the caller, which should + * use it to send the packet right away. Otherwise, enqueue the packet for + * later transmission while looking up the hardware address, if possible. + * + * As such, this function returns one of three different possible results: + * + * - ERR_OK with a non-NULL 'hwaddrp': the caller should send the packet now. + * - ERR_OK with a NULL 'hwaddrp': the packet has been enqueued for later. + * - not ERR_OK: something went wrong; forward the error upward in the stack. + * + * @param netif The lwIP network interface on which the IP packet will be sent. + * @param q The pbuf(s) containing the IP packet to be sent. + * @param ip6addr The destination IPv6 address of the packet. + * @param hwaddrp On success, filled with a pointer to a HW address or NULL (meaning + * the packet has been queued). + * @return + * - ERR_OK on success, ERR_RTE if no route was found for the packet, + * or ERR_MEM if low memory conditions prohibit sending the packet at all. + */ +err_t +nd6_get_next_hop_addr_or_queue(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr, const u8_t **hwaddrp) +{ + s8_t i; + + /* Get next hop record. */ + i = nd6_get_next_hop_entry(ip6addr, netif); + if (i < 0) { + /* failed to get a next hop neighbor record. */ + return i; + } + + /* Now that we have a destination record, send or queue the packet. */ + if (neighbor_cache[i].state == ND6_STALE) { + /* Switch to delay state. */ + neighbor_cache[i].state = ND6_DELAY; + neighbor_cache[i].counter.delay_time = LWIP_ND6_DELAY_FIRST_PROBE_TIME / ND6_TMR_INTERVAL; + } + /* @todo should we send or queue if PROBE? send for now, to let unicast NS pass. */ + if ((neighbor_cache[i].state == ND6_REACHABLE) || + (neighbor_cache[i].state == ND6_DELAY) || + (neighbor_cache[i].state == ND6_PROBE)) { + + /* Tell the caller to send out the packet now. */ + *hwaddrp = neighbor_cache[i].lladdr; + return ERR_OK; + } + + /* We should queue packet on this interface. */ + *hwaddrp = NULL; + return nd6_queue_packet(i, q); +} + + +/** + * Get the Path MTU for a destination. + * + * @param ip6addr the destination address + * @param netif the netif on which the packet will be sent + * @return the Path MTU, if known, or the netif default MTU + */ +u16_t +nd6_get_destination_mtu(const ip6_addr_t *ip6addr, struct netif *netif) +{ + s16_t i; + + i = nd6_find_destination_cache_entry(ip6addr); + if (i >= 0) { + if (destination_cache[i].pmtu > 0) { + return destination_cache[i].pmtu; + } + } + + if (netif != NULL) { + return netif_mtu6(netif); + } + + return 1280; /* Minimum MTU */ +} + + +#if LWIP_ND6_TCP_REACHABILITY_HINTS +/** + * Provide the Neighbor discovery process with a hint that a + * destination is reachable. Called by tcp_receive when ACKs are + * received or sent (as per RFC). This is useful to avoid sending + * NS messages every 30 seconds. + * + * @param ip6addr the destination address which is know to be reachable + * by an upper layer protocol (TCP) + */ +void +nd6_reachability_hint(const ip6_addr_t *ip6addr) +{ + s8_t i; + s16_t dst_idx; + + /* Find destination in cache. */ + if (ip6_addr_cmp(ip6addr, &(destination_cache[nd6_cached_destination_index].destination_addr))) { + dst_idx = nd6_cached_destination_index; + ND6_STATS_INC(nd6.cachehit); + } else { + dst_idx = nd6_find_destination_cache_entry(ip6addr); + } + if (dst_idx < 0) { + return; + } + + /* Find next hop neighbor in cache. */ + if (ip6_addr_cmp(&(destination_cache[dst_idx].next_hop_addr), &(neighbor_cache[nd6_cached_neighbor_index].next_hop_address))) { + i = nd6_cached_neighbor_index; + ND6_STATS_INC(nd6.cachehit); + } else { + i = nd6_find_neighbor_cache_entry(&(destination_cache[dst_idx].next_hop_addr)); + } + if (i < 0) { + return; + } + + /* For safety: don't set as reachable if we don't have a LL address yet. Misuse protection. */ + if (neighbor_cache[i].state == ND6_INCOMPLETE || neighbor_cache[i].state == ND6_NO_ENTRY) { + return; + } + + /* Set reachability state. */ + neighbor_cache[i].state = ND6_REACHABLE; + neighbor_cache[i].counter.reachable_time = reachable_time; +} +#endif /* LWIP_ND6_TCP_REACHABILITY_HINTS */ + +/** + * Remove all prefix, neighbor_cache and router entries of the specified netif. + * + * @param netif points to a network interface + */ +void +nd6_cleanup_netif(struct netif *netif) +{ + u8_t i; + s8_t router_index; + for (i = 0; i < LWIP_ND6_NUM_PREFIXES; i++) { + if (prefix_list[i].netif == netif) { + prefix_list[i].netif = NULL; + } + } + for (i = 0; i < LWIP_ND6_NUM_NEIGHBORS; i++) { + if (neighbor_cache[i].netif == netif) { + for (router_index = 0; router_index < LWIP_ND6_NUM_ROUTERS; router_index++) { + if (default_router_list[router_index].neighbor_entry == &neighbor_cache[i]) { + default_router_list[router_index].neighbor_entry = NULL; + default_router_list[router_index].flags = 0; + } + } + neighbor_cache[i].isrouter = 0; + nd6_free_neighbor_cache_entry(i); + } + } + /* Clear the destination cache, since many entries may now have become + * invalid for one of several reasons. As destination cache entries have no + * netif association, use a sledgehammer approach (this can be improved). */ + nd6_clear_destination_cache(); +} + +#if LWIP_IPV6_MLD +/** + * The state of a local IPv6 address entry is about to change. If needed, join + * or leave the solicited-node multicast group for the address. + * + * @param netif The netif that owns the address. + * @param addr_idx The index of the address. + * @param new_state The new (IP6_ADDR_) state for the address. + */ +void +nd6_adjust_mld_membership(struct netif *netif, s8_t addr_idx, u8_t new_state) +{ + u8_t old_state, old_member, new_member; + + old_state = netif_ip6_addr_state(netif, addr_idx); + + /* Determine whether we were, and should be, a member of the solicited-node + * multicast group for this address. For tentative addresses, the group is + * not joined until the address enters the TENTATIVE_1 (or VALID) state. */ + old_member = (old_state != IP6_ADDR_INVALID && old_state != IP6_ADDR_DUPLICATED && old_state != IP6_ADDR_TENTATIVE); + new_member = (new_state != IP6_ADDR_INVALID && new_state != IP6_ADDR_DUPLICATED && new_state != IP6_ADDR_TENTATIVE); + + if (old_member != new_member) { + ip6_addr_set_solicitednode(&multicast_address, netif_ip6_addr(netif, addr_idx)->addr[3]); + ip6_addr_assign_zone(&multicast_address, IP6_MULTICAST, netif); + + if (new_member) { + mld6_joingroup_netif(netif, &multicast_address); + } else { + mld6_leavegroup_netif(netif, &multicast_address); + } + } +} +#endif /* LWIP_IPV6_MLD */ + +/** Netif was added, set up, or reconnected (link up) */ +void +nd6_restart_netif(struct netif *netif) +{ +#if LWIP_IPV6_SEND_ROUTER_SOLICIT + /* Send Router Solicitation messages (see RFC 4861, ch. 6.3.7). */ + netif->rs_count = LWIP_ND6_MAX_MULTICAST_SOLICIT; +#endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */ +} + +#endif /* LWIP_IPV6 */ diff --git a/Other/tun2socks/core/c/core/mem.c b/Other/tun2socks/core/c/core/mem.c new file mode 100644 index 0000000..315fb3c --- /dev/null +++ b/Other/tun2socks/core/c/core/mem.c @@ -0,0 +1,1017 @@ +/** + * @file + * Dynamic memory manager + * + * This is a lightweight replacement for the standard C library malloc(). + * + * If you want to use the standard C library malloc() instead, define + * MEM_LIBC_MALLOC to 1 in your lwipopts.h + * + * To let mem_malloc() use pools (prevents fragmentation and is much faster than + * a heap but might waste some memory), define MEM_USE_POOLS to 1, define + * MEMP_USE_CUSTOM_POOLS to 1 and create a file "lwippools.h" that includes a list + * of pools like this (more pools can be added between _START and _END): + * + * Define three pools with sizes 256, 512, and 1512 bytes + * LWIP_MALLOC_MEMPOOL_START + * LWIP_MALLOC_MEMPOOL(20, 256) + * LWIP_MALLOC_MEMPOOL(10, 512) + * LWIP_MALLOC_MEMPOOL(5, 1512) + * LWIP_MALLOC_MEMPOOL_END + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * Simon Goldschmidt + * + */ + +#include "lwip/opt.h" +#include "lwip/mem.h" +#include "lwip/def.h" +#include "lwip/sys.h" +#include "lwip/stats.h" +#include "lwip/err.h" + +#include + +#if MEM_LIBC_MALLOC +#include /* for malloc()/free() */ +#endif + +/* This is overridable for tests only... */ +#ifndef LWIP_MEM_ILLEGAL_FREE +#define LWIP_MEM_ILLEGAL_FREE(msg) LWIP_ASSERT(msg, 0) +#endif + +#define MEM_STATS_INC_LOCKED(x) SYS_ARCH_LOCKED(MEM_STATS_INC(x)) +#define MEM_STATS_INC_USED_LOCKED(x, y) SYS_ARCH_LOCKED(MEM_STATS_INC_USED(x, y)) +#define MEM_STATS_DEC_USED_LOCKED(x, y) SYS_ARCH_LOCKED(MEM_STATS_DEC_USED(x, y)) + +#if MEM_OVERFLOW_CHECK +#define MEM_SANITY_OFFSET MEM_SANITY_REGION_BEFORE_ALIGNED +#define MEM_SANITY_OVERHEAD (MEM_SANITY_REGION_BEFORE_ALIGNED + MEM_SANITY_REGION_AFTER_ALIGNED) +#else +#define MEM_SANITY_OFFSET 0 +#define MEM_SANITY_OVERHEAD 0 +#endif + +#if MEM_OVERFLOW_CHECK || MEMP_OVERFLOW_CHECK +/** + * Check if a mep element was victim of an overflow or underflow + * (e.g. the restricted area after/before it has been altered) + * + * @param p the mem element to check + * @param size allocated size of the element + * @param descr1 description of the element source shown on error + * @param descr2 description of the element source shown on error + */ +void +mem_overflow_check_raw(void *p, size_t size, const char *descr1, const char *descr2) +{ +#if MEM_SANITY_REGION_AFTER_ALIGNED || MEM_SANITY_REGION_BEFORE_ALIGNED + u16_t k; + u8_t *m; + +#if MEM_SANITY_REGION_AFTER_ALIGNED > 0 + m = (u8_t *)p + size; + for (k = 0; k < MEM_SANITY_REGION_AFTER_ALIGNED; k++) { + if (m[k] != 0xcd) { + char errstr[128]; + snprintf(errstr, sizeof(errstr), "detected mem overflow in %s%s", descr1, descr2); + LWIP_ASSERT(errstr, 0); + } + } +#endif /* MEM_SANITY_REGION_AFTER_ALIGNED > 0 */ + +#if MEM_SANITY_REGION_BEFORE_ALIGNED > 0 + m = (u8_t *)p - MEM_SANITY_REGION_BEFORE_ALIGNED; + for (k = 0; k < MEM_SANITY_REGION_BEFORE_ALIGNED; k++) { + if (m[k] != 0xcd) { + char errstr[128]; + snprintf(errstr, sizeof(errstr), "detected mem underflow in %s%s", descr1, descr2); + LWIP_ASSERT(errstr, 0); + } + } +#endif /* MEM_SANITY_REGION_BEFORE_ALIGNED > 0 */ +#else + LWIP_UNUSED_ARG(p); + LWIP_UNUSED_ARG(desc); + LWIP_UNUSED_ARG(descr); +#endif +} + +/** + * Initialize the restricted area of a mem element. + */ +void +mem_overflow_init_raw(void *p, size_t size) +{ +#if MEM_SANITY_REGION_BEFORE_ALIGNED > 0 || MEM_SANITY_REGION_AFTER_ALIGNED > 0 + u8_t *m; +#if MEM_SANITY_REGION_BEFORE_ALIGNED > 0 + m = (u8_t *)p - MEM_SANITY_REGION_BEFORE_ALIGNED; + memset(m, 0xcd, MEM_SANITY_REGION_BEFORE_ALIGNED); +#endif +#if MEM_SANITY_REGION_AFTER_ALIGNED > 0 + m = (u8_t *)p + size; + memset(m, 0xcd, MEM_SANITY_REGION_AFTER_ALIGNED); +#endif +#else /* MEM_SANITY_REGION_BEFORE_ALIGNED > 0 || MEM_SANITY_REGION_AFTER_ALIGNED > 0 */ + LWIP_UNUSED_ARG(p); + LWIP_UNUSED_ARG(desc); +#endif /* MEM_SANITY_REGION_BEFORE_ALIGNED > 0 || MEM_SANITY_REGION_AFTER_ALIGNED > 0 */ +} +#endif /* MEM_OVERFLOW_CHECK || MEMP_OVERFLOW_CHECK */ + +#if MEM_LIBC_MALLOC || MEM_USE_POOLS + +/** mem_init is not used when using pools instead of a heap or using + * C library malloc(). + */ +void +mem_init(void) +{ +} + +/** mem_trim is not used when using pools instead of a heap or using + * C library malloc(): we can't free part of a pool element and the stack + * support mem_trim() to return a different pointer + */ +void * +mem_trim(void *mem, mem_size_t size) +{ + LWIP_UNUSED_ARG(size); + return mem; +} +#endif /* MEM_LIBC_MALLOC || MEM_USE_POOLS */ + +#if MEM_LIBC_MALLOC +/* lwIP heap implemented using C library malloc() */ + +/* in case C library malloc() needs extra protection, + * allow these defines to be overridden. + */ +#ifndef mem_clib_free +#define mem_clib_free free +#endif +#ifndef mem_clib_malloc +#define mem_clib_malloc malloc +#endif +#ifndef mem_clib_calloc +#define mem_clib_calloc calloc +#endif + +#if LWIP_STATS && MEM_STATS +#define MEM_LIBC_STATSHELPER_SIZE LWIP_MEM_ALIGN_SIZE(sizeof(mem_size_t)) +#else +#define MEM_LIBC_STATSHELPER_SIZE 0 +#endif + +/** + * Allocate a block of memory with a minimum of 'size' bytes. + * + * @param size is the minimum size of the requested block in bytes. + * @return pointer to allocated memory or NULL if no free memory was found. + * + * Note that the returned value must always be aligned (as defined by MEM_ALIGNMENT). + */ +void * +mem_malloc(mem_size_t size) +{ + void *ret = mem_clib_malloc(size + MEM_LIBC_STATSHELPER_SIZE); + if (ret == NULL) { + MEM_STATS_INC_LOCKED(err); + } else { + LWIP_ASSERT("malloc() must return aligned memory", LWIP_MEM_ALIGN(ret) == ret); +#if LWIP_STATS && MEM_STATS + *(mem_size_t *)ret = size; + ret = (u8_t *)ret + MEM_LIBC_STATSHELPER_SIZE; + MEM_STATS_INC_USED_LOCKED(used, size); +#endif + } + return ret; +} + +/** Put memory back on the heap + * + * @param rmem is the pointer as returned by a previous call to mem_malloc() + */ +void +mem_free(void *rmem) +{ + LWIP_ASSERT("rmem != NULL", (rmem != NULL)); + LWIP_ASSERT("rmem == MEM_ALIGN(rmem)", (rmem == LWIP_MEM_ALIGN(rmem))); +#if LWIP_STATS && MEM_STATS + rmem = (u8_t *)rmem - MEM_LIBC_STATSHELPER_SIZE; + MEM_STATS_DEC_USED_LOCKED(used, *(mem_size_t *)rmem); +#endif + mem_clib_free(rmem); +} + +#elif MEM_USE_POOLS + +/* lwIP heap implemented with different sized pools */ + +/** + * Allocate memory: determine the smallest pool that is big enough + * to contain an element of 'size' and get an element from that pool. + * + * @param size the size in bytes of the memory needed + * @return a pointer to the allocated memory or NULL if the pool is empty + */ +void * +mem_malloc(mem_size_t size) +{ + void *ret; + struct memp_malloc_helper *element = NULL; + memp_t poolnr; + mem_size_t required_size = size + LWIP_MEM_ALIGN_SIZE(sizeof(struct memp_malloc_helper)); + + for (poolnr = MEMP_POOL_FIRST; poolnr <= MEMP_POOL_LAST; poolnr = (memp_t)(poolnr + 1)) { + /* is this pool big enough to hold an element of the required size + plus a struct memp_malloc_helper that saves the pool this element came from? */ + if (required_size <= memp_pools[poolnr]->size) { + element = (struct memp_malloc_helper *)memp_malloc(poolnr); + if (element == NULL) { + /* No need to DEBUGF or ASSERT: This error is already taken care of in memp.c */ +#if MEM_USE_POOLS_TRY_BIGGER_POOL + /** Try a bigger pool if this one is empty! */ + if (poolnr < MEMP_POOL_LAST) { + continue; + } +#endif /* MEM_USE_POOLS_TRY_BIGGER_POOL */ + MEM_STATS_INC_LOCKED(err); + return NULL; + } + break; + } + } + if (poolnr > MEMP_POOL_LAST) { + LWIP_ASSERT("mem_malloc(): no pool is that big!", 0); + MEM_STATS_INC_LOCKED(err); + return NULL; + } + + /* save the pool number this element came from */ + element->poolnr = poolnr; + /* and return a pointer to the memory directly after the struct memp_malloc_helper */ + ret = (u8_t *)element + LWIP_MEM_ALIGN_SIZE(sizeof(struct memp_malloc_helper)); + +#if MEMP_OVERFLOW_CHECK || (LWIP_STATS && MEM_STATS) + /* truncating to u16_t is safe because struct memp_desc::size is u16_t */ + element->size = (u16_t)size; + MEM_STATS_INC_USED_LOCKED(used, element->size); +#endif /* MEMP_OVERFLOW_CHECK || (LWIP_STATS && MEM_STATS) */ +#if MEMP_OVERFLOW_CHECK + /* initialize unused memory (diff between requested size and selected pool's size) */ + memset((u8_t *)ret + size, 0xcd, memp_pools[poolnr]->size - size); +#endif /* MEMP_OVERFLOW_CHECK */ + return ret; +} + +/** + * Free memory previously allocated by mem_malloc. Loads the pool number + * and calls memp_free with that pool number to put the element back into + * its pool + * + * @param rmem the memory element to free + */ +void +mem_free(void *rmem) +{ + struct memp_malloc_helper *hmem; + + LWIP_ASSERT("rmem != NULL", (rmem != NULL)); + LWIP_ASSERT("rmem == MEM_ALIGN(rmem)", (rmem == LWIP_MEM_ALIGN(rmem))); + + /* get the original struct memp_malloc_helper */ + /* cast through void* to get rid of alignment warnings */ + hmem = (struct memp_malloc_helper *)(void *)((u8_t *)rmem - LWIP_MEM_ALIGN_SIZE(sizeof(struct memp_malloc_helper))); + + LWIP_ASSERT("hmem != NULL", (hmem != NULL)); + LWIP_ASSERT("hmem == MEM_ALIGN(hmem)", (hmem == LWIP_MEM_ALIGN(hmem))); + LWIP_ASSERT("hmem->poolnr < MEMP_MAX", (hmem->poolnr < MEMP_MAX)); + + MEM_STATS_DEC_USED_LOCKED(used, hmem->size); +#if MEMP_OVERFLOW_CHECK + { + u16_t i; + LWIP_ASSERT("MEM_USE_POOLS: invalid chunk size", + hmem->size <= memp_pools[hmem->poolnr]->size); + /* check that unused memory remained untouched (diff between requested size and selected pool's size) */ + for (i = hmem->size; i < memp_pools[hmem->poolnr]->size; i++) { + u8_t data = *((u8_t *)rmem + i); + LWIP_ASSERT("MEM_USE_POOLS: mem overflow detected", data == 0xcd); + } + } +#endif /* MEMP_OVERFLOW_CHECK */ + + /* and put it in the pool we saved earlier */ + memp_free(hmem->poolnr, hmem); +} + +#else /* MEM_USE_POOLS */ +/* lwIP replacement for your libc malloc() */ + +/** + * The heap is made up as a list of structs of this type. + * This does not have to be aligned since for getting its size, + * we only use the macro SIZEOF_STRUCT_MEM, which automatically aligns. + */ +struct mem { + /** index (-> ram[next]) of the next struct */ + mem_size_t next; + /** index (-> ram[prev]) of the previous struct */ + mem_size_t prev; + /** 1: this area is used; 0: this area is unused */ + u8_t used; +#if MEM_OVERFLOW_CHECK + /** this keeps track of the user allocation size for guard checks */ + mem_size_t user_size; +#endif +}; + +/** All allocated blocks will be MIN_SIZE bytes big, at least! + * MIN_SIZE can be overridden to suit your needs. Smaller values save space, + * larger values could prevent too small blocks to fragment the RAM too much. */ +#ifndef MIN_SIZE +#define MIN_SIZE 12 +#endif /* MIN_SIZE */ +/* some alignment macros: we define them here for better source code layout */ +#define MIN_SIZE_ALIGNED LWIP_MEM_ALIGN_SIZE(MIN_SIZE) +#define SIZEOF_STRUCT_MEM LWIP_MEM_ALIGN_SIZE(sizeof(struct mem)) +#define MEM_SIZE_ALIGNED LWIP_MEM_ALIGN_SIZE(MEM_SIZE) + +/** If you want to relocate the heap to external memory, simply define + * LWIP_RAM_HEAP_POINTER as a void-pointer to that location. + * If so, make sure the memory at that location is big enough (see below on + * how that space is calculated). */ +#ifndef LWIP_RAM_HEAP_POINTER +/** the heap. we need one struct mem at the end and some room for alignment */ +LWIP_DECLARE_MEMORY_ALIGNED(ram_heap, MEM_SIZE_ALIGNED + (2U * SIZEOF_STRUCT_MEM)); +#define LWIP_RAM_HEAP_POINTER ram_heap +#endif /* LWIP_RAM_HEAP_POINTER */ + +/** pointer to the heap (ram_heap): for alignment, ram is now a pointer instead of an array */ +static u8_t *ram; +/** the last entry, always unused! */ +static struct mem *ram_end; + +/** concurrent access protection */ +#if !NO_SYS +static sys_mutex_t mem_mutex; +#endif + +#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT + +static volatile u8_t mem_free_count; + +/* Allow mem_free from other (e.g. interrupt) context */ +#define LWIP_MEM_FREE_DECL_PROTECT() SYS_ARCH_DECL_PROTECT(lev_free) +#define LWIP_MEM_FREE_PROTECT() SYS_ARCH_PROTECT(lev_free) +#define LWIP_MEM_FREE_UNPROTECT() SYS_ARCH_UNPROTECT(lev_free) +#define LWIP_MEM_ALLOC_DECL_PROTECT() SYS_ARCH_DECL_PROTECT(lev_alloc) +#define LWIP_MEM_ALLOC_PROTECT() SYS_ARCH_PROTECT(lev_alloc) +#define LWIP_MEM_ALLOC_UNPROTECT() SYS_ARCH_UNPROTECT(lev_alloc) +#define LWIP_MEM_LFREE_VOLATILE volatile + +#else /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + +/* Protect the heap only by using a mutex */ +#define LWIP_MEM_FREE_DECL_PROTECT() +#define LWIP_MEM_FREE_PROTECT() sys_mutex_lock(&mem_mutex) +#define LWIP_MEM_FREE_UNPROTECT() sys_mutex_unlock(&mem_mutex) +/* mem_malloc is protected using mutex AND LWIP_MEM_ALLOC_PROTECT */ +#define LWIP_MEM_ALLOC_DECL_PROTECT() +#define LWIP_MEM_ALLOC_PROTECT() +#define LWIP_MEM_ALLOC_UNPROTECT() +#define LWIP_MEM_LFREE_VOLATILE + +#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + +/** pointer to the lowest free block, this is used for faster search */ +static struct mem * LWIP_MEM_LFREE_VOLATILE lfree; + +#if MEM_SANITY_CHECK +static void mem_sanity(void); +#define MEM_SANITY() mem_sanity() +#else +#define MEM_SANITY() +#endif + +#if MEM_OVERFLOW_CHECK +static void +mem_overflow_init_element(struct mem *mem, mem_size_t user_size) +{ + void *p = (u8_t *)mem + SIZEOF_STRUCT_MEM + MEM_SANITY_OFFSET; + mem->user_size = user_size; + mem_overflow_init_raw(p, user_size); +} + +static void +mem_overflow_check_element(struct mem *mem) +{ + void *p = (u8_t *)mem + SIZEOF_STRUCT_MEM + MEM_SANITY_OFFSET; + mem_overflow_check_raw(p, mem->user_size, "heap", ""); +} +#else /* MEM_OVERFLOW_CHECK */ +#define mem_overflow_init_element(mem, size) +#define mem_overflow_check_element(mem) +#endif /* MEM_OVERFLOW_CHECK */ + +static struct mem * +ptr_to_mem(mem_size_t ptr) +{ + return (struct mem *)(void *)&ram[ptr]; +} + +static mem_size_t +mem_to_ptr(void *mem) +{ + return (mem_size_t)((u8_t *)mem - ram); +} + +/** + * "Plug holes" by combining adjacent empty struct mems. + * After this function is through, there should not exist + * one empty struct mem pointing to another empty struct mem. + * + * @param mem this points to a struct mem which just has been freed + * @internal this function is only called by mem_free() and mem_trim() + * + * This assumes access to the heap is protected by the calling function + * already. + */ +static void +plug_holes(struct mem *mem) +{ + struct mem *nmem; + struct mem *pmem; + + LWIP_ASSERT("plug_holes: mem >= ram", (u8_t *)mem >= ram); + LWIP_ASSERT("plug_holes: mem < ram_end", (u8_t *)mem < (u8_t *)ram_end); + LWIP_ASSERT("plug_holes: mem->used == 0", mem->used == 0); + + /* plug hole forward */ + LWIP_ASSERT("plug_holes: mem->next <= MEM_SIZE_ALIGNED", mem->next <= MEM_SIZE_ALIGNED); + + nmem = ptr_to_mem(mem->next); + if (mem != nmem && nmem->used == 0 && (u8_t *)nmem != (u8_t *)ram_end) { + /* if mem->next is unused and not end of ram, combine mem and mem->next */ + if (lfree == nmem) { + lfree = mem; + } + mem->next = nmem->next; + if (nmem->next != MEM_SIZE_ALIGNED) { + ptr_to_mem(nmem->next)->prev = mem_to_ptr(mem); + } + } + + /* plug hole backward */ + pmem = ptr_to_mem(mem->prev); + if (pmem != mem && pmem->used == 0) { + /* if mem->prev is unused, combine mem and mem->prev */ + if (lfree == mem) { + lfree = pmem; + } + pmem->next = mem->next; + if (mem->next != MEM_SIZE_ALIGNED) { + ptr_to_mem(mem->next)->prev = mem_to_ptr(pmem); + } + } +} + +/** + * Zero the heap and initialize start, end and lowest-free + */ +void +mem_init(void) +{ + struct mem *mem; + + LWIP_ASSERT("Sanity check alignment", + (SIZEOF_STRUCT_MEM & (MEM_ALIGNMENT - 1)) == 0); + + /* align the heap */ + ram = (u8_t *)LWIP_MEM_ALIGN(LWIP_RAM_HEAP_POINTER); + /* initialize the start of the heap */ + mem = (struct mem *)(void *)ram; + mem->next = MEM_SIZE_ALIGNED; + mem->prev = 0; + mem->used = 0; + /* initialize the end of the heap */ + ram_end = ptr_to_mem(MEM_SIZE_ALIGNED); + ram_end->used = 1; + ram_end->next = MEM_SIZE_ALIGNED; + ram_end->prev = MEM_SIZE_ALIGNED; + MEM_SANITY(); + + /* initialize the lowest-free pointer to the start of the heap */ + lfree = (struct mem *)(void *)ram; + + MEM_STATS_AVAIL(avail, MEM_SIZE_ALIGNED); + + if (sys_mutex_new(&mem_mutex) != ERR_OK) { + LWIP_ASSERT("failed to create mem_mutex", 0); + } +} + +/* Check if a struct mem is correctly linked. + * If not, double-free is a possible reason. + */ +static int +mem_link_valid(struct mem *mem) +{ + struct mem *nmem, *pmem; + mem_size_t rmem_idx; + rmem_idx = mem_to_ptr(mem); + nmem = ptr_to_mem(mem->next); + pmem = ptr_to_mem(mem->prev); + if ((mem->next > MEM_SIZE_ALIGNED) || (mem->prev > MEM_SIZE_ALIGNED) || + ((mem->prev != rmem_idx) && (pmem->next != rmem_idx)) || + ((nmem != ram_end) && (nmem->prev != rmem_idx))) { + return 0; + } + return 1; +} + +#if MEM_SANITY_CHECK +static void +mem_sanity(void) +{ + struct mem *mem; + u8_t last_used; + + /* begin with first element here */ + mem = (struct mem *)ram; + LWIP_ASSERT("heap element used valid", (mem->used == 0) || (mem->used == 1)); + last_used = mem->used; + LWIP_ASSERT("heap element prev ptr valid", mem->prev == 0); + LWIP_ASSERT("heap element next ptr valid", mem->next <= MEM_SIZE_ALIGNED); + LWIP_ASSERT("heap element next ptr aligned", LWIP_MEM_ALIGN(ptr_to_mem(mem->next) == ptr_to_mem(mem->next))); + + /* check all elements before the end of the heap */ + for (mem = ptr_to_mem(mem->next); + ((u8_t *)mem > ram) && (mem < ram_end); + mem = ptr_to_mem(mem->next)) { + LWIP_ASSERT("heap element aligned", LWIP_MEM_ALIGN(mem) == mem); + LWIP_ASSERT("heap element prev ptr valid", mem->prev <= MEM_SIZE_ALIGNED); + LWIP_ASSERT("heap element next ptr valid", mem->next <= MEM_SIZE_ALIGNED); + LWIP_ASSERT("heap element prev ptr aligned", LWIP_MEM_ALIGN(ptr_to_mem(mem->prev) == ptr_to_mem(mem->prev))); + LWIP_ASSERT("heap element next ptr aligned", LWIP_MEM_ALIGN(ptr_to_mem(mem->next) == ptr_to_mem(mem->next))); + + if (last_used == 0) { + /* 2 unused elements in a row? */ + LWIP_ASSERT("heap element unused?", mem->used == 1); + } else { + LWIP_ASSERT("heap element unused member", (mem->used == 0) || (mem->used == 1)); + } + + LWIP_ASSERT("heap element link valid", mem_link_valid(mem)); + + /* used/unused altering */ + last_used = mem->used; + } + LWIP_ASSERT("heap end ptr sanity", mem == ptr_to_mem(MEM_SIZE_ALIGNED)); + LWIP_ASSERT("heap element used valid", mem->used == 1); + LWIP_ASSERT("heap element prev ptr valid", mem->prev == MEM_SIZE_ALIGNED); + LWIP_ASSERT("heap element next ptr valid", mem->next == MEM_SIZE_ALIGNED); +} +#endif /* MEM_SANITY_CHECK */ + +/** + * Put a struct mem back on the heap + * + * @param rmem is the data portion of a struct mem as returned by a previous + * call to mem_malloc() + */ +void +mem_free(void *rmem) +{ + struct mem *mem; + LWIP_MEM_FREE_DECL_PROTECT(); + + if (rmem == NULL) { + LWIP_DEBUGF(MEM_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("mem_free(p == NULL) was called.\n")); + return; + } + if ((((mem_ptr_t)rmem) & (MEM_ALIGNMENT - 1)) != 0) { + LWIP_MEM_ILLEGAL_FREE("mem_free: sanity check alignment"); + LWIP_DEBUGF(MEM_DEBUG | LWIP_DBG_LEVEL_SEVERE, ("mem_free: sanity check alignment\n")); + /* protect mem stats from concurrent access */ + MEM_STATS_INC_LOCKED(illegal); + return; + } + + /* Get the corresponding struct mem: */ + /* cast through void* to get rid of alignment warnings */ + mem = (struct mem *)(void *)((u8_t *)rmem - (SIZEOF_STRUCT_MEM + MEM_SANITY_OFFSET)); + + if ((u8_t *)mem < ram || (u8_t *)rmem + MIN_SIZE_ALIGNED > (u8_t *)ram_end) { + LWIP_MEM_ILLEGAL_FREE("mem_free: illegal memory"); + LWIP_DEBUGF(MEM_DEBUG | LWIP_DBG_LEVEL_SEVERE, ("mem_free: illegal memory\n")); + /* protect mem stats from concurrent access */ + MEM_STATS_INC_LOCKED(illegal); + return; + } +#if MEM_OVERFLOW_CHECK + mem_overflow_check_element(mem); +#endif + /* protect the heap from concurrent access */ + LWIP_MEM_FREE_PROTECT(); + /* mem has to be in a used state */ + if (!mem->used) { + LWIP_MEM_ILLEGAL_FREE("mem_free: illegal memory: double free"); + LWIP_MEM_FREE_UNPROTECT(); + LWIP_DEBUGF(MEM_DEBUG | LWIP_DBG_LEVEL_SEVERE, ("mem_free: illegal memory: double free?\n")); + /* protect mem stats from concurrent access */ + MEM_STATS_INC_LOCKED(illegal); + return; + } + + if (!mem_link_valid(mem)) { + LWIP_MEM_ILLEGAL_FREE("mem_free: illegal memory: non-linked: double free"); + LWIP_MEM_FREE_UNPROTECT(); + LWIP_DEBUGF(MEM_DEBUG | LWIP_DBG_LEVEL_SEVERE, ("mem_free: illegal memory: non-linked: double free?\n")); + /* protect mem stats from concurrent access */ + MEM_STATS_INC_LOCKED(illegal); + return; + } + + /* mem is now unused. */ + mem->used = 0; + + if (mem < lfree) { + /* the newly freed struct is now the lowest */ + lfree = mem; + } + + MEM_STATS_DEC_USED(used, mem->next - (mem_size_t)(((u8_t *)mem - ram))); + + /* finally, see if prev or next are free also */ + plug_holes(mem); + MEM_SANITY(); +#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT + mem_free_count = 1; +#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + LWIP_MEM_FREE_UNPROTECT(); +} + +/** + * Shrink memory returned by mem_malloc(). + * + * @param rmem pointer to memory allocated by mem_malloc the is to be shrinked + * @param new_size required size after shrinking (needs to be smaller than or + * equal to the previous size) + * @return for compatibility reasons: is always == rmem, at the moment + * or NULL if newsize is > old size, in which case rmem is NOT touched + * or freed! + */ +void * +mem_trim(void *rmem, mem_size_t new_size) +{ + mem_size_t size, newsize; + mem_size_t ptr, ptr2; + struct mem *mem, *mem2; + /* use the FREE_PROTECT here: it protects with sem OR SYS_ARCH_PROTECT */ + LWIP_MEM_FREE_DECL_PROTECT(); + + /* Expand the size of the allocated memory region so that we can + adjust for alignment. */ + newsize = (mem_size_t)LWIP_MEM_ALIGN_SIZE(new_size); + if (newsize < MIN_SIZE_ALIGNED) { + /* every data block must be at least MIN_SIZE_ALIGNED long */ + newsize = MIN_SIZE_ALIGNED; + } +#if MEM_OVERFLOW_CHECK + newsize += MEM_SANITY_REGION_BEFORE_ALIGNED + MEM_SANITY_REGION_AFTER_ALIGNED; +#endif + if ((newsize > MEM_SIZE_ALIGNED) || (newsize < new_size)) { + return NULL; + } + + LWIP_ASSERT("mem_trim: legal memory", (u8_t *)rmem >= (u8_t *)ram && + (u8_t *)rmem < (u8_t *)ram_end); + + if ((u8_t *)rmem < (u8_t *)ram || (u8_t *)rmem >= (u8_t *)ram_end) { + LWIP_DEBUGF(MEM_DEBUG | LWIP_DBG_LEVEL_SEVERE, ("mem_trim: illegal memory\n")); + /* protect mem stats from concurrent access */ + MEM_STATS_INC_LOCKED(illegal); + return rmem; + } + /* Get the corresponding struct mem ... */ + /* cast through void* to get rid of alignment warnings */ + mem = (struct mem *)(void *)((u8_t *)rmem - (SIZEOF_STRUCT_MEM + MEM_SANITY_OFFSET)); +#if MEM_OVERFLOW_CHECK + mem_overflow_check_element(mem); +#endif + /* ... and its offset pointer */ + ptr = mem_to_ptr(mem); + + size = (mem_size_t)((mem_size_t)(mem->next - ptr) - (SIZEOF_STRUCT_MEM + MEM_SANITY_OVERHEAD)); + LWIP_ASSERT("mem_trim can only shrink memory", newsize <= size); + if (newsize > size) { + /* not supported */ + return NULL; + } + if (newsize == size) { + /* No change in size, simply return */ + return rmem; + } + + /* protect the heap from concurrent access */ + LWIP_MEM_FREE_PROTECT(); + + mem2 = ptr_to_mem(mem->next); + if (mem2->used == 0) { + /* The next struct is unused, we can simply move it at little */ + mem_size_t next; + LWIP_ASSERT("invalid next ptr", mem->next != MEM_SIZE_ALIGNED); + /* remember the old next pointer */ + next = mem2->next; + /* create new struct mem which is moved directly after the shrinked mem */ + ptr2 = (mem_size_t)(ptr + SIZEOF_STRUCT_MEM + newsize); + if (lfree == mem2) { + lfree = ptr_to_mem(ptr2); + } + mem2 = ptr_to_mem(ptr2); + mem2->used = 0; + /* restore the next pointer */ + mem2->next = next; + /* link it back to mem */ + mem2->prev = ptr; + /* link mem to it */ + mem->next = ptr2; + /* last thing to restore linked list: as we have moved mem2, + * let 'mem2->next->prev' point to mem2 again. but only if mem2->next is not + * the end of the heap */ + if (mem2->next != MEM_SIZE_ALIGNED) { + ptr_to_mem(mem2->next)->prev = ptr2; + } + MEM_STATS_DEC_USED(used, (size - newsize)); + /* no need to plug holes, we've already done that */ + } else if (newsize + SIZEOF_STRUCT_MEM + MIN_SIZE_ALIGNED <= size) { + /* Next struct is used but there's room for another struct mem with + * at least MIN_SIZE_ALIGNED of data. + * Old size ('size') must be big enough to contain at least 'newsize' plus a struct mem + * ('SIZEOF_STRUCT_MEM') with some data ('MIN_SIZE_ALIGNED'). + * @todo we could leave out MIN_SIZE_ALIGNED. We would create an empty + * region that couldn't hold data, but when mem->next gets freed, + * the 2 regions would be combined, resulting in more free memory */ + ptr2 = (mem_size_t)(ptr + SIZEOF_STRUCT_MEM + newsize); + LWIP_ASSERT("invalid next ptr", mem->next != MEM_SIZE_ALIGNED); + mem2 = ptr_to_mem(ptr2); + if (mem2 < lfree) { + lfree = mem2; + } + mem2->used = 0; + mem2->next = mem->next; + mem2->prev = ptr; + mem->next = ptr2; + if (mem2->next != MEM_SIZE_ALIGNED) { + ptr_to_mem(mem2->next)->prev = ptr2; + } + MEM_STATS_DEC_USED(used, (size - newsize)); + /* the original mem->next is used, so no need to plug holes! */ + } + /* else { + next struct mem is used but size between mem and mem2 is not big enough + to create another struct mem + -> don't do anyhting. + -> the remaining space stays unused since it is too small + } */ +#if MEM_OVERFLOW_CHECK + mem_overflow_init_element(mem, new_size); +#endif + MEM_SANITY(); +#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT + mem_free_count = 1; +#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + LWIP_MEM_FREE_UNPROTECT(); + return rmem; +} + +/** + * Allocate a block of memory with a minimum of 'size' bytes. + * + * @param size_in is the minimum size of the requested block in bytes. + * @return pointer to allocated memory or NULL if no free memory was found. + * + * Note that the returned value will always be aligned (as defined by MEM_ALIGNMENT). + */ +void * +mem_malloc(mem_size_t size_in) +{ + mem_size_t ptr, ptr2, size; + struct mem *mem, *mem2; +#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT + u8_t local_mem_free_count = 0; +#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + LWIP_MEM_ALLOC_DECL_PROTECT(); + + if (size_in == 0) { + return NULL; + } + + /* Expand the size of the allocated memory region so that we can + adjust for alignment. */ + size = (mem_size_t)LWIP_MEM_ALIGN_SIZE(size_in); + if (size < MIN_SIZE_ALIGNED) { + /* every data block must be at least MIN_SIZE_ALIGNED long */ + size = MIN_SIZE_ALIGNED; + } +#if MEM_OVERFLOW_CHECK + size += MEM_SANITY_REGION_BEFORE_ALIGNED + MEM_SANITY_REGION_AFTER_ALIGNED; +#endif + if ((size > MEM_SIZE_ALIGNED) || (size < size_in)) { + return NULL; + } + + /* protect the heap from concurrent access */ + sys_mutex_lock(&mem_mutex); + LWIP_MEM_ALLOC_PROTECT(); +#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT + /* run as long as a mem_free disturbed mem_malloc or mem_trim */ + do { + local_mem_free_count = 0; +#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + + /* Scan through the heap searching for a free block that is big enough, + * beginning with the lowest free block. + */ + for (ptr = mem_to_ptr(lfree); ptr < MEM_SIZE_ALIGNED - size; + ptr = ptr_to_mem(ptr)->next) { + mem = ptr_to_mem(ptr); +#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT + mem_free_count = 0; + LWIP_MEM_ALLOC_UNPROTECT(); + /* allow mem_free or mem_trim to run */ + LWIP_MEM_ALLOC_PROTECT(); + if (mem_free_count != 0) { + /* If mem_free or mem_trim have run, we have to restart since they + could have altered our current struct mem. */ + local_mem_free_count = 1; + break; + } +#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + + if ((!mem->used) && + (mem->next - (ptr + SIZEOF_STRUCT_MEM)) >= size) { + /* mem is not used and at least perfect fit is possible: + * mem->next - (ptr + SIZEOF_STRUCT_MEM) gives us the 'user data size' of mem */ + + if (mem->next - (ptr + SIZEOF_STRUCT_MEM) >= (size + SIZEOF_STRUCT_MEM + MIN_SIZE_ALIGNED)) { + /* (in addition to the above, we test if another struct mem (SIZEOF_STRUCT_MEM) containing + * at least MIN_SIZE_ALIGNED of data also fits in the 'user data space' of 'mem') + * -> split large block, create empty remainder, + * remainder must be large enough to contain MIN_SIZE_ALIGNED data: if + * mem->next - (ptr + (2*SIZEOF_STRUCT_MEM)) == size, + * struct mem would fit in but no data between mem2 and mem2->next + * @todo we could leave out MIN_SIZE_ALIGNED. We would create an empty + * region that couldn't hold data, but when mem->next gets freed, + * the 2 regions would be combined, resulting in more free memory + */ + ptr2 = (mem_size_t)(ptr + SIZEOF_STRUCT_MEM + size); + LWIP_ASSERT("invalid next ptr",ptr2 != MEM_SIZE_ALIGNED); + /* create mem2 struct */ + mem2 = ptr_to_mem(ptr2); + mem2->used = 0; + mem2->next = mem->next; + mem2->prev = ptr; + /* and insert it between mem and mem->next */ + mem->next = ptr2; + mem->used = 1; + + if (mem2->next != MEM_SIZE_ALIGNED) { + ptr_to_mem(mem2->next)->prev = ptr2; + } + MEM_STATS_INC_USED(used, (size + SIZEOF_STRUCT_MEM)); + } else { + /* (a mem2 struct does no fit into the user data space of mem and mem->next will always + * be used at this point: if not we have 2 unused structs in a row, plug_holes should have + * take care of this). + * -> near fit or exact fit: do not split, no mem2 creation + * also can't move mem->next directly behind mem, since mem->next + * will always be used at this point! + */ + mem->used = 1; + MEM_STATS_INC_USED(used, mem->next - mem_to_ptr(mem)); + } +#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT +mem_malloc_adjust_lfree: +#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + if (mem == lfree) { + struct mem *cur = lfree; + /* Find next free block after mem and update lowest free pointer */ + while (cur->used && cur != ram_end) { +#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT + mem_free_count = 0; + LWIP_MEM_ALLOC_UNPROTECT(); + /* prevent high interrupt latency... */ + LWIP_MEM_ALLOC_PROTECT(); + if (mem_free_count != 0) { + /* If mem_free or mem_trim have run, we have to restart since they + could have altered our current struct mem or lfree. */ + goto mem_malloc_adjust_lfree; + } +#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + cur = ptr_to_mem(cur->next); + } + lfree = cur; + LWIP_ASSERT("mem_malloc: !lfree->used", ((lfree == ram_end) || (!lfree->used))); + } + LWIP_MEM_ALLOC_UNPROTECT(); + sys_mutex_unlock(&mem_mutex); + LWIP_ASSERT("mem_malloc: allocated memory not above ram_end.", + (mem_ptr_t)mem + SIZEOF_STRUCT_MEM + size <= (mem_ptr_t)ram_end); + LWIP_ASSERT("mem_malloc: allocated memory properly aligned.", + ((mem_ptr_t)mem + SIZEOF_STRUCT_MEM) % MEM_ALIGNMENT == 0); + LWIP_ASSERT("mem_malloc: sanity check alignment", + (((mem_ptr_t)mem) & (MEM_ALIGNMENT - 1)) == 0); + +#if MEM_OVERFLOW_CHECK + mem_overflow_init_element(mem, size_in); +#endif + MEM_SANITY(); + return (u8_t *)mem + SIZEOF_STRUCT_MEM + MEM_SANITY_OFFSET; + } + } +#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT + /* if we got interrupted by a mem_free, try again */ + } while (local_mem_free_count != 0); +#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */ + MEM_STATS_INC(err); + LWIP_MEM_ALLOC_UNPROTECT(); + sys_mutex_unlock(&mem_mutex); + LWIP_DEBUGF(MEM_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("mem_malloc: could not allocate %"S16_F" bytes\n", (s16_t)size)); + return NULL; +} + +#endif /* MEM_USE_POOLS */ + +#if MEM_LIBC_MALLOC && (!LWIP_STATS || !MEM_STATS) +void * +mem_calloc(mem_size_t count, mem_size_t size) +{ + return mem_clib_calloc(count, size); +} + +#else /* MEM_LIBC_MALLOC && (!LWIP_STATS || !MEM_STATS) */ +/** + * Contiguously allocates enough space for count objects that are size bytes + * of memory each and returns a pointer to the allocated memory. + * + * The allocated memory is filled with bytes of value zero. + * + * @param count number of objects to allocate + * @param size size of the objects to allocate + * @return pointer to allocated memory / NULL pointer if there is an error + */ +void * +mem_calloc(mem_size_t count, mem_size_t size) +{ + void *p; + size_t alloc_size = (size_t)count * (size_t)size; + + if ((size_t)(mem_size_t)alloc_size != alloc_size) { + LWIP_DEBUGF(MEM_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("mem_calloc: could not allocate %"SZT_F" bytes\n", alloc_size)); + return NULL; + } + + /* allocate 'count' objects of size 'size' */ + p = mem_malloc((mem_size_t)alloc_size); + if (p) { + /* zero the memory */ + memset(p, 0, alloc_size); + } + return p; +} +#endif /* MEM_LIBC_MALLOC && (!LWIP_STATS || !MEM_STATS) */ diff --git a/Other/tun2socks/core/c/core/memp.c b/Other/tun2socks/core/c/core/memp.c new file mode 100644 index 0000000..352ce5a --- /dev/null +++ b/Other/tun2socks/core/c/core/memp.c @@ -0,0 +1,447 @@ +/** + * @file + * Dynamic pool memory manager + * + * lwIP has dedicated pools for many structures (netconn, protocol control blocks, + * packet buffers, ...). All these pools are managed here. + * + * @defgroup mempool Memory pools + * @ingroup infrastructure + * Custom memory pools + + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#include "lwip/memp.h" +#include "lwip/sys.h" +#include "lwip/stats.h" + +#include + +/* Make sure we include everything we need for size calculation required by memp_std.h */ +#include "lwip/pbuf.h" +#include "lwip/raw.h" +#include "lwip/udp.h" +#include "lwip/tcp.h" +#include "lwip/priv/tcp_priv.h" +#include "lwip/altcp.h" +#include "lwip/ip4_frag.h" +#include "lwip/netbuf.h" +#include "lwip/api.h" +#include "lwip/priv/tcpip_priv.h" +#include "lwip/priv/api_msg.h" +#include "lwip/priv/sockets_priv.h" +#include "lwip/etharp.h" +#include "lwip/igmp.h" +#include "lwip/timeouts.h" +/* needed by default MEMP_NUM_SYS_TIMEOUT */ +#include "netif/ppp/ppp_opts.h" +#include "lwip/netdb.h" +#include "lwip/dns.h" +#include "lwip/priv/nd6_priv.h" +#include "lwip/ip6_frag.h" +#include "lwip/mld6.h" + +#define LWIP_MEMPOOL(name,num,size,desc) LWIP_MEMPOOL_DECLARE(name,num,size,desc) +#include "lwip/priv/memp_std.h" + +const struct memp_desc *const memp_pools[MEMP_MAX] = { +#define LWIP_MEMPOOL(name,num,size,desc) &memp_ ## name, +#include "lwip/priv/memp_std.h" +}; + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif + +#if MEMP_MEM_MALLOC && MEMP_OVERFLOW_CHECK >= 2 +#undef MEMP_OVERFLOW_CHECK +/* MEMP_OVERFLOW_CHECK >= 2 does not work with MEMP_MEM_MALLOC, use 1 instead */ +#define MEMP_OVERFLOW_CHECK 1 +#endif + +#if MEMP_SANITY_CHECK && !MEMP_MEM_MALLOC +/** + * Check that memp-lists don't form a circle, using "Floyd's cycle-finding algorithm". + */ +static int +memp_sanity(const struct memp_desc *desc) +{ + struct memp *t, *h; + + t = *desc->tab; + if (t != NULL) { + for (h = t->next; (t != NULL) && (h != NULL); t = t->next, + h = ((h->next != NULL) ? h->next->next : NULL)) { + if (t == h) { + return 0; + } + } + } + + return 1; +} +#endif /* MEMP_SANITY_CHECK && !MEMP_MEM_MALLOC */ + +#if MEMP_OVERFLOW_CHECK +/** + * Check if a memp element was victim of an overflow or underflow + * (e.g. the restricted area after/before it has been altered) + * + * @param p the memp element to check + * @param desc the pool p comes from + */ +static void +memp_overflow_check_element(struct memp *p, const struct memp_desc *desc) +{ + mem_overflow_check_raw((u8_t *)p + MEMP_SIZE, desc->size, "pool ", desc->desc); +} + +/** + * Initialize the restricted area of on memp element. + */ +static void +memp_overflow_init_element(struct memp *p, const struct memp_desc *desc) +{ + mem_overflow_init_raw((u8_t *)p + MEMP_SIZE, desc->size); +} + +#if MEMP_OVERFLOW_CHECK >= 2 +/** + * Do an overflow check for all elements in every pool. + * + * @see memp_overflow_check_element for a description of the check + */ +static void +memp_overflow_check_all(void) +{ + u16_t i, j; + struct memp *p; + SYS_ARCH_DECL_PROTECT(old_level); + SYS_ARCH_PROTECT(old_level); + + for (i = 0; i < MEMP_MAX; ++i) { + p = (struct memp *)LWIP_MEM_ALIGN(memp_pools[i]->base); + for (j = 0; j < memp_pools[i]->num; ++j) { + memp_overflow_check_element(p, memp_pools[i]); + p = LWIP_ALIGNMENT_CAST(struct memp *, ((u8_t *)p + MEMP_SIZE + memp_pools[i]->size + MEM_SANITY_REGION_AFTER_ALIGNED)); + } + } + SYS_ARCH_UNPROTECT(old_level); +} +#endif /* MEMP_OVERFLOW_CHECK >= 2 */ +#endif /* MEMP_OVERFLOW_CHECK */ + +/** + * Initialize custom memory pool. + * Related functions: memp_malloc_pool, memp_free_pool + * + * @param desc pool to initialize + */ +void +memp_init_pool(const struct memp_desc *desc) +{ +#if MEMP_MEM_MALLOC + LWIP_UNUSED_ARG(desc); +#else + int i; + struct memp *memp; + + *desc->tab = NULL; + memp = (struct memp *)LWIP_MEM_ALIGN(desc->base); +#if MEMP_MEM_INIT + /* force memset on pool memory */ + memset(memp, 0, (size_t)desc->num * (MEMP_SIZE + desc->size +#if MEMP_OVERFLOW_CHECK + + MEM_SANITY_REGION_AFTER_ALIGNED +#endif + )); +#endif + /* create a linked list of memp elements */ + for (i = 0; i < desc->num; ++i) { + memp->next = *desc->tab; + *desc->tab = memp; +#if MEMP_OVERFLOW_CHECK + memp_overflow_init_element(memp, desc); +#endif /* MEMP_OVERFLOW_CHECK */ + /* cast through void* to get rid of alignment warnings */ + memp = (struct memp *)(void *)((u8_t *)memp + MEMP_SIZE + desc->size +#if MEMP_OVERFLOW_CHECK + + MEM_SANITY_REGION_AFTER_ALIGNED +#endif + ); + } +#if MEMP_STATS + desc->stats->avail = desc->num; +#endif /* MEMP_STATS */ +#endif /* !MEMP_MEM_MALLOC */ + +#if MEMP_STATS && (defined(LWIP_DEBUG) || LWIP_STATS_DISPLAY) + desc->stats->name = desc->desc; +#endif /* MEMP_STATS && (defined(LWIP_DEBUG) || LWIP_STATS_DISPLAY) */ +} + +/** + * Initializes lwIP built-in pools. + * Related functions: memp_malloc, memp_free + * + * Carves out memp_memory into linked lists for each pool-type. + */ +void +memp_init(void) +{ + u16_t i; + + /* for every pool: */ + for (i = 0; i < LWIP_ARRAYSIZE(memp_pools); i++) { + memp_init_pool(memp_pools[i]); + +#if LWIP_STATS && MEMP_STATS + lwip_stats.memp[i] = memp_pools[i]->stats; +#endif + } + +#if MEMP_OVERFLOW_CHECK >= 2 + /* check everything a first time to see if it worked */ + memp_overflow_check_all(); +#endif /* MEMP_OVERFLOW_CHECK >= 2 */ +} + +static void * +#if !MEMP_OVERFLOW_CHECK +do_memp_malloc_pool(const struct memp_desc *desc) +#else +do_memp_malloc_pool_fn(const struct memp_desc *desc, const char *file, const int line) +#endif +{ + struct memp *memp; + SYS_ARCH_DECL_PROTECT(old_level); + +#if MEMP_MEM_MALLOC + memp = (struct memp *)mem_malloc(MEMP_SIZE + MEMP_ALIGN_SIZE(desc->size)); + SYS_ARCH_PROTECT(old_level); +#else /* MEMP_MEM_MALLOC */ + SYS_ARCH_PROTECT(old_level); + + memp = *desc->tab; +#endif /* MEMP_MEM_MALLOC */ + + if (memp != NULL) { +#if !MEMP_MEM_MALLOC +#if MEMP_OVERFLOW_CHECK == 1 + memp_overflow_check_element(memp, desc); +#endif /* MEMP_OVERFLOW_CHECK */ + + *desc->tab = memp->next; +#if MEMP_OVERFLOW_CHECK + memp->next = NULL; +#endif /* MEMP_OVERFLOW_CHECK */ +#endif /* !MEMP_MEM_MALLOC */ +#if MEMP_OVERFLOW_CHECK + memp->file = file; + memp->line = line; +#if MEMP_MEM_MALLOC + memp_overflow_init_element(memp, desc); +#endif /* MEMP_MEM_MALLOC */ +#endif /* MEMP_OVERFLOW_CHECK */ + LWIP_ASSERT("memp_malloc: memp properly aligned", + ((mem_ptr_t)memp % MEM_ALIGNMENT) == 0); +#if MEMP_STATS + desc->stats->used++; + if (desc->stats->used > desc->stats->max) { + desc->stats->max = desc->stats->used; + } +#endif + SYS_ARCH_UNPROTECT(old_level); + /* cast through u8_t* to get rid of alignment warnings */ + return ((u8_t *)memp + MEMP_SIZE); + } else { +#if MEMP_STATS + desc->stats->err++; +#endif + SYS_ARCH_UNPROTECT(old_level); + LWIP_DEBUGF(MEMP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("memp_malloc: out of memory in pool %s\n", desc->desc)); + } + + return NULL; +} + +/** + * Get an element from a custom pool. + * + * @param desc the pool to get an element from + * + * @return a pointer to the allocated memory or a NULL pointer on error + */ +void * +#if !MEMP_OVERFLOW_CHECK +memp_malloc_pool(const struct memp_desc *desc) +#else +memp_malloc_pool_fn(const struct memp_desc *desc, const char *file, const int line) +#endif +{ + LWIP_ASSERT("invalid pool desc", desc != NULL); + if (desc == NULL) { + return NULL; + } + +#if !MEMP_OVERFLOW_CHECK + return do_memp_malloc_pool(desc); +#else + return do_memp_malloc_pool_fn(desc, file, line); +#endif +} + +/** + * Get an element from a specific pool. + * + * @param type the pool to get an element from + * + * @return a pointer to the allocated memory or a NULL pointer on error + */ +void * +#if !MEMP_OVERFLOW_CHECK +memp_malloc(memp_t type) +#else +memp_malloc_fn(memp_t type, const char *file, const int line) +#endif +{ + void *memp; + LWIP_ERROR("memp_malloc: type < MEMP_MAX", (type < MEMP_MAX), return NULL;); + +#if MEMP_OVERFLOW_CHECK >= 2 + memp_overflow_check_all(); +#endif /* MEMP_OVERFLOW_CHECK >= 2 */ + +#if !MEMP_OVERFLOW_CHECK + memp = do_memp_malloc_pool(memp_pools[type]); +#else + memp = do_memp_malloc_pool_fn(memp_pools[type], file, line); +#endif + + return memp; +} + +static void +do_memp_free_pool(const struct memp_desc *desc, void *mem) +{ + struct memp *memp; + SYS_ARCH_DECL_PROTECT(old_level); + + LWIP_ASSERT("memp_free: mem properly aligned", + ((mem_ptr_t)mem % MEM_ALIGNMENT) == 0); + + /* cast through void* to get rid of alignment warnings */ + memp = (struct memp *)(void *)((u8_t *)mem - MEMP_SIZE); + + SYS_ARCH_PROTECT(old_level); + +#if MEMP_OVERFLOW_CHECK == 1 + memp_overflow_check_element(memp, desc); +#endif /* MEMP_OVERFLOW_CHECK */ + +#if MEMP_STATS + desc->stats->used--; +#endif + +#if MEMP_MEM_MALLOC + LWIP_UNUSED_ARG(desc); + SYS_ARCH_UNPROTECT(old_level); + mem_free(memp); +#else /* MEMP_MEM_MALLOC */ + memp->next = *desc->tab; + *desc->tab = memp; + +#if MEMP_SANITY_CHECK + LWIP_ASSERT("memp sanity", memp_sanity(desc)); +#endif /* MEMP_SANITY_CHECK */ + + SYS_ARCH_UNPROTECT(old_level); +#endif /* !MEMP_MEM_MALLOC */ +} + +/** + * Put a custom pool element back into its pool. + * + * @param desc the pool where to put mem + * @param mem the memp element to free + */ +void +memp_free_pool(const struct memp_desc *desc, void *mem) +{ + LWIP_ASSERT("invalid pool desc", desc != NULL); + if ((desc == NULL) || (mem == NULL)) { + return; + } + + do_memp_free_pool(desc, mem); +} + +/** + * Put an element back into its pool. + * + * @param type the pool where to put mem + * @param mem the memp element to free + */ +void +memp_free(memp_t type, void *mem) +{ +#ifdef LWIP_HOOK_MEMP_AVAILABLE + struct memp *old_first; +#endif + + LWIP_ERROR("memp_free: type < MEMP_MAX", (type < MEMP_MAX), return;); + + if (mem == NULL) { + return; + } + +#if MEMP_OVERFLOW_CHECK >= 2 + memp_overflow_check_all(); +#endif /* MEMP_OVERFLOW_CHECK >= 2 */ + +#ifdef LWIP_HOOK_MEMP_AVAILABLE + old_first = *memp_pools[type]->tab; +#endif + + do_memp_free_pool(memp_pools[type], mem); + +#ifdef LWIP_HOOK_MEMP_AVAILABLE + if (old_first == NULL) { + LWIP_HOOK_MEMP_AVAILABLE(type); + } +#endif +} diff --git a/Other/tun2socks/core/c/core/netif.c b/Other/tun2socks/core/c/core/netif.c new file mode 100644 index 0000000..15200a2 --- /dev/null +++ b/Other/tun2socks/core/c/core/netif.c @@ -0,0 +1,1795 @@ +/** + * @file + * lwIP network interface abstraction + * + * @defgroup netif Network interface (NETIF) + * @ingroup callbackstyle_api + * + * @defgroup netif_ip4 IPv4 address handling + * @ingroup netif + * + * @defgroup netif_ip6 IPv6 address handling + * @ingroup netif + * + * @defgroup netif_cd Client data handling + * Store data (void*) on a netif for application usage. + * @see @ref LWIP_NUM_NETIF_CLIENT_DATA + * @ingroup netif + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + */ + +#include "lwip/opt.h" + +#include /* memset */ +#include /* atoi */ + +#include "lwip/def.h" +#include "lwip/ip_addr.h" +#include "lwip/ip6_addr.h" +#include "lwip/netif.h" +#include "lwip/priv/tcp_priv.h" +#include "lwip/udp.h" +#include "lwip/priv/raw_priv.h" +#include "lwip/snmp.h" +#include "lwip/igmp.h" +#include "lwip/etharp.h" +#include "lwip/stats.h" +#include "lwip/sys.h" +#include "lwip/ip.h" +#if ENABLE_LOOPBACK +#if LWIP_NETIF_LOOPBACK_MULTITHREADING +#include "lwip/tcpip.h" +#endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ +#endif /* ENABLE_LOOPBACK */ + +#include "netif/ethernet.h" + +#if LWIP_AUTOIP +#include "lwip/autoip.h" +#endif /* LWIP_AUTOIP */ +#if LWIP_DHCP +#include "lwip/dhcp.h" +#endif /* LWIP_DHCP */ +#if LWIP_IPV6_DHCP6 +#include "lwip/dhcp6.h" +#endif /* LWIP_IPV6_DHCP6 */ +#if LWIP_IPV6_MLD +#include "lwip/mld6.h" +#endif /* LWIP_IPV6_MLD */ +#if LWIP_IPV6 +#include "lwip/nd6.h" +#endif + +#if LWIP_NETIF_STATUS_CALLBACK +#define NETIF_STATUS_CALLBACK(n) do{ if (n->status_callback) { (n->status_callback)(n); }}while(0) +#else +#define NETIF_STATUS_CALLBACK(n) +#endif /* LWIP_NETIF_STATUS_CALLBACK */ + +#if LWIP_NETIF_LINK_CALLBACK +#define NETIF_LINK_CALLBACK(n) do{ if (n->link_callback) { (n->link_callback)(n); }}while(0) +#else +#define NETIF_LINK_CALLBACK(n) +#endif /* LWIP_NETIF_LINK_CALLBACK */ + +#if LWIP_NETIF_EXT_STATUS_CALLBACK +static netif_ext_callback_t *ext_callback; +#endif + +#if !LWIP_SINGLE_NETIF +struct netif *netif_list; +#endif /* !LWIP_SINGLE_NETIF */ +struct netif *netif_default; + +#define netif_index_to_num(index) ((index) - 1) +static u8_t netif_num; + +#if LWIP_NUM_NETIF_CLIENT_DATA > 0 +static u8_t netif_client_id; +#endif + +#define NETIF_REPORT_TYPE_IPV4 0x01 +#define NETIF_REPORT_TYPE_IPV6 0x02 +static void netif_issue_reports(struct netif *netif, u8_t report_type); + +#if LWIP_IPV6 +static err_t netif_null_output_ip6(struct netif *netif, struct pbuf *p, const ip6_addr_t *ipaddr); +#endif /* LWIP_IPV6 */ +#if LWIP_IPV4 +static err_t netif_null_output_ip4(struct netif *netif, struct pbuf *p, const ip4_addr_t *ipaddr); +#endif /* LWIP_IPV4 */ + +#if LWIP_HAVE_LOOPIF +#if LWIP_IPV4 +static err_t netif_loop_output_ipv4(struct netif *netif, struct pbuf *p, const ip4_addr_t *addr); +#endif +#if LWIP_IPV6 +static err_t netif_loop_output_ipv6(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr); +#endif + + +static struct netif loop_netif; + +/** + * Initialize a lwip network interface structure for a loopback interface + * + * @param netif the lwip network interface structure for this loopif + * @return ERR_OK if the loopif is initialized + * ERR_MEM if private data couldn't be allocated + */ +static err_t +netif_loopif_init(struct netif *netif) +{ + LWIP_ASSERT("netif_loopif_init: invalid netif", netif != NULL); + + /* initialize the snmp variables and counters inside the struct netif + * ifSpeed: no assumption can be made! + */ + MIB2_INIT_NETIF(netif, snmp_ifType_softwareLoopback, 0); + + netif->name[0] = 'l'; + netif->name[1] = 'o'; +#if LWIP_IPV4 + netif->output = netif_loop_output_ipv4; +#endif +#if LWIP_IPV6 + netif->output_ip6 = netif_loop_output_ipv6; +#endif +#if LWIP_LOOPIF_MULTICAST + netif_set_flags(netif, NETIF_FLAG_IGMP); +#endif + NETIF_SET_CHECKSUM_CTRL(netif, NETIF_CHECKSUM_DISABLE_ALL); + return ERR_OK; +} +#endif /* LWIP_HAVE_LOOPIF */ + +void +netif_init(void) +{ +#if LWIP_HAVE_LOOPIF +#if LWIP_IPV4 +#define LOOPIF_ADDRINIT &loop_ipaddr, &loop_netmask, &loop_gw, + ip4_addr_t loop_ipaddr, loop_netmask, loop_gw; + IP4_ADDR(&loop_gw, 127, 0, 0, 1); + IP4_ADDR(&loop_ipaddr, 127, 0, 0, 1); + IP4_ADDR(&loop_netmask, 255, 0, 0, 0); +#else /* LWIP_IPV4 */ +#define LOOPIF_ADDRINIT +#endif /* LWIP_IPV4 */ + +#if NO_SYS + netif_add(&loop_netif, LOOPIF_ADDRINIT NULL, netif_loopif_init, ip_input); +#else /* NO_SYS */ + netif_add(&loop_netif, LOOPIF_ADDRINIT NULL, netif_loopif_init, tcpip_input); +#endif /* NO_SYS */ + +#if LWIP_IPV6 + IP_ADDR6_HOST(loop_netif.ip6_addr, 0, 0, 0, 0x00000001UL); + loop_netif.ip6_addr_state[0] = IP6_ADDR_VALID; +#endif /* LWIP_IPV6 */ + + netif_set_link_up(&loop_netif); + netif_set_up(&loop_netif); + +#endif /* LWIP_HAVE_LOOPIF */ +} + +/** + * @ingroup lwip_nosys + * Forwards a received packet for input processing with + * ethernet_input() or ip_input() depending on netif flags. + * Don't call directly, pass to netif_add() and call + * netif->input(). + * Only works if the netif driver correctly sets + * NETIF_FLAG_ETHARP and/or NETIF_FLAG_ETHERNET flag! + */ +err_t +netif_input(struct pbuf *p, struct netif *inp) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ASSERT("netif_input: invalid pbuf", p != NULL); + LWIP_ASSERT("netif_input: invalid netif", inp != NULL); + +#if LWIP_ETHERNET + if (inp->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) { + return ethernet_input(p, inp); + } else +#endif /* LWIP_ETHERNET */ + return ip_input(p, inp); +} + +/** + * @ingroup netif + * Add a network interface to the list of lwIP netifs. + * + * Same as @ref netif_add but without IPv4 addresses + */ +struct netif * +netif_add_noaddr(struct netif *netif, void *state, netif_init_fn init, netif_input_fn input) +{ + return netif_add(netif, +#if LWIP_IPV4 + NULL, NULL, NULL, +#endif /* LWIP_IPV4*/ + state, init, input); +} + +/** + * @ingroup netif + * Add a network interface to the list of lwIP netifs. + * + * @param netif a pre-allocated netif structure + * @param ipaddr IP address for the new netif + * @param netmask network mask for the new netif + * @param gw default gateway IP address for the new netif + * @param state opaque data passed to the new netif + * @param init callback function that initializes the interface + * @param input callback function that is called to pass + * ingress packets up in the protocol layer stack.\n + * It is recommended to use a function that passes the input directly + * to the stack (netif_input(), NO_SYS=1 mode) or via sending a + * message to TCPIP thread (tcpip_input(), NO_SYS=0 mode).\n + * These functions use netif flags NETIF_FLAG_ETHARP and NETIF_FLAG_ETHERNET + * to decide whether to forward to ethernet_input() or ip_input(). + * In other words, the functions only work when the netif + * driver is implemented correctly!\n + * Most members of struct netif should be be initialized by the + * netif init function = netif driver (init parameter of this function).\n + * IPv6: Don't forget to call netif_create_ip6_linklocal_address() after + * setting the MAC address in struct netif.hwaddr + * (IPv6 requires a link-local address). + * + * @return netif, or NULL if failed. + */ +struct netif * +netif_add(struct netif *netif, +#if LWIP_IPV4 + const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw, +#endif /* LWIP_IPV4 */ + void *state, netif_init_fn init, netif_input_fn input) +{ +#if LWIP_IPV6 + s8_t i; +#endif + + LWIP_ASSERT_CORE_LOCKED(); + +#if LWIP_SINGLE_NETIF + if (netif_default != NULL) { + LWIP_ASSERT("single netif already set", 0); + return NULL; + } +#endif + + LWIP_ERROR("netif_add: invalid netif", netif != NULL, return NULL); + LWIP_ERROR("netif_add: No init function given", init != NULL, return NULL); + +#if LWIP_IPV4 + if (ipaddr == NULL) { + ipaddr = ip_2_ip4(IP4_ADDR_ANY); + } + if (netmask == NULL) { + netmask = ip_2_ip4(IP4_ADDR_ANY); + } + if (gw == NULL) { + gw = ip_2_ip4(IP4_ADDR_ANY); + } + + /* reset new interface configuration state */ + ip_addr_set_zero_ip4(&netif->ip_addr); + ip_addr_set_zero_ip4(&netif->netmask); + ip_addr_set_zero_ip4(&netif->gw); + netif->output = netif_null_output_ip4; +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + ip_addr_set_zero_ip6(&netif->ip6_addr[i]); + netif->ip6_addr_state[i] = IP6_ADDR_INVALID; +#if LWIP_IPV6_ADDRESS_LIFETIMES + netif->ip6_addr_valid_life[i] = IP6_ADDR_LIFE_STATIC; + netif->ip6_addr_pref_life[i] = IP6_ADDR_LIFE_STATIC; +#endif /* LWIP_IPV6_ADDRESS_LIFETIMES */ + } + netif->output_ip6 = netif_null_output_ip6; +#endif /* LWIP_IPV6 */ + NETIF_SET_CHECKSUM_CTRL(netif, NETIF_CHECKSUM_ENABLE_ALL); + netif->mtu = 0; + netif->flags = 0; +#ifdef netif_get_client_data + memset(netif->client_data, 0, sizeof(netif->client_data)); +#endif /* LWIP_NUM_NETIF_CLIENT_DATA */ +#if LWIP_IPV6 +#if LWIP_IPV6_AUTOCONFIG + /* IPv6 address autoconfiguration not enabled by default */ + netif->ip6_autoconfig_enabled = 0; +#endif /* LWIP_IPV6_AUTOCONFIG */ + nd6_restart_netif(netif); +#endif /* LWIP_IPV6 */ +#if LWIP_NETIF_STATUS_CALLBACK + netif->status_callback = NULL; +#endif /* LWIP_NETIF_STATUS_CALLBACK */ +#if LWIP_NETIF_LINK_CALLBACK + netif->link_callback = NULL; +#endif /* LWIP_NETIF_LINK_CALLBACK */ +#if LWIP_IGMP + netif->igmp_mac_filter = NULL; +#endif /* LWIP_IGMP */ +#if LWIP_IPV6 && LWIP_IPV6_MLD + netif->mld_mac_filter = NULL; +#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ +#if ENABLE_LOOPBACK + netif->loop_first = NULL; + netif->loop_last = NULL; +#endif /* ENABLE_LOOPBACK */ + + /* remember netif specific state information data */ + netif->state = state; + netif->num = netif_num; + netif->input = input; + + NETIF_RESET_HINTS(netif); +#if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS + netif->loop_cnt_current = 0; +#endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */ + +#if LWIP_IPV4 + netif_set_addr(netif, ipaddr, netmask, gw); +#endif /* LWIP_IPV4 */ + + /* call user specified initialization function for netif */ + if (init(netif) != ERR_OK) { + return NULL; + } +#if LWIP_IPV6 && LWIP_ND6_ALLOW_RA_UPDATES + /* Initialize the MTU for IPv6 to the one set by the netif driver. + This can be updated later by RA. */ + netif->mtu6 = netif->mtu; +#endif /* LWIP_IPV6 && LWIP_ND6_ALLOW_RA_UPDATES */ + +#if !LWIP_SINGLE_NETIF + /* Assign a unique netif number in the range [0..254], so that (num+1) can + serve as an interface index that fits in a u8_t. + We assume that the new netif has not yet been added to the list here. + This algorithm is O(n^2), but that should be OK for lwIP. + */ + { + struct netif *netif2; + int num_netifs; + do { + if (netif->num == 255) { + netif->num = 0; + } + num_netifs = 0; + for (netif2 = netif_list; netif2 != NULL; netif2 = netif2->next) { + LWIP_ASSERT("netif already added", netif2 != netif); + num_netifs++; + LWIP_ASSERT("too many netifs, max. supported number is 255", num_netifs <= 255); + if (netif2->num == netif->num) { + netif->num++; + break; + } + } + } while (netif2 != NULL); + } + if (netif->num == 254) { + netif_num = 0; + } else { + netif_num = (u8_t)(netif->num + 1); + } + + /* add this netif to the list */ + netif->next = netif_list; + netif_list = netif; +#endif /* "LWIP_SINGLE_NETIF */ + mib2_netif_added(netif); + +#if LWIP_IGMP + /* start IGMP processing */ + if (netif->flags & NETIF_FLAG_IGMP) { + igmp_start(netif); + } +#endif /* LWIP_IGMP */ + + LWIP_DEBUGF(NETIF_DEBUG, ("netif: added interface %c%c IP", + netif->name[0], netif->name[1])); +#if LWIP_IPV4 + LWIP_DEBUGF(NETIF_DEBUG, (" addr ")); + ip4_addr_debug_print(NETIF_DEBUG, ipaddr); + LWIP_DEBUGF(NETIF_DEBUG, (" netmask ")); + ip4_addr_debug_print(NETIF_DEBUG, netmask); + LWIP_DEBUGF(NETIF_DEBUG, (" gw ")); + ip4_addr_debug_print(NETIF_DEBUG, gw); +#endif /* LWIP_IPV4 */ + LWIP_DEBUGF(NETIF_DEBUG, ("\n")); + + netif_invoke_ext_callback(netif, LWIP_NSC_NETIF_ADDED, NULL); + + return netif; +} + +static void +netif_do_ip_addr_changed(const ip_addr_t *old_addr, const ip_addr_t *new_addr) +{ +#if LWIP_TCP + tcp_netif_ip_addr_changed(old_addr, new_addr); +#endif /* LWIP_TCP */ +#if LWIP_UDP + udp_netif_ip_addr_changed(old_addr, new_addr); +#endif /* LWIP_UDP */ +#if LWIP_RAW + raw_netif_ip_addr_changed(old_addr, new_addr); +#endif /* LWIP_RAW */ +} + +#if LWIP_IPV4 +static int +netif_do_set_ipaddr(struct netif *netif, const ip4_addr_t *ipaddr, ip_addr_t *old_addr) +{ + LWIP_ASSERT("invalid pointer", ipaddr != NULL); + LWIP_ASSERT("invalid pointer", old_addr != NULL); + + /* address is actually being changed? */ + if (ip4_addr_cmp(ipaddr, netif_ip4_addr(netif)) == 0) { + ip_addr_t new_addr; + *ip_2_ip4(&new_addr) = *ipaddr; + IP_SET_TYPE_VAL(new_addr, IPADDR_TYPE_V4); + + ip_addr_copy(*old_addr, *netif_ip_addr4(netif)); + + LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: netif address being changed\n")); + netif_do_ip_addr_changed(old_addr, &new_addr); + + mib2_remove_ip4(netif); + mib2_remove_route_ip4(0, netif); + /* set new IP address to netif */ + ip4_addr_set(ip_2_ip4(&netif->ip_addr), ipaddr); + IP_SET_TYPE_VAL(netif->ip_addr, IPADDR_TYPE_V4); + mib2_add_ip4(netif); + mib2_add_route_ip4(0, netif); + + netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV4); + + NETIF_STATUS_CALLBACK(netif); + return 1; /* address changed */ + } + return 0; /* address unchanged */ +} + +/** + * @ingroup netif_ip4 + * Change the IP address of a network interface + * + * @param netif the network interface to change + * @param ipaddr the new IP address + * + * @note call netif_set_addr() if you also want to change netmask and + * default gateway + */ +void +netif_set_ipaddr(struct netif *netif, const ip4_addr_t *ipaddr) +{ + ip_addr_t old_addr; + + LWIP_ERROR("netif_set_ipaddr: invalid netif", netif != NULL, return); + + /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */ + if (ipaddr == NULL) { + ipaddr = IP4_ADDR_ANY4; + } + + LWIP_ASSERT_CORE_LOCKED(); + + if (netif_do_set_ipaddr(netif, ipaddr, &old_addr)) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + netif_ext_callback_args_t args; + args.ipv4_changed.old_address = &old_addr; + netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_ADDRESS_CHANGED, &args); +#endif + } +} + +static int +netif_do_set_netmask(struct netif *netif, const ip4_addr_t *netmask, ip_addr_t *old_nm) +{ + /* address is actually being changed? */ + if (ip4_addr_cmp(netmask, netif_ip4_netmask(netif)) == 0) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + LWIP_ASSERT("invalid pointer", old_nm != NULL); + ip_addr_copy(*old_nm, *netif_ip_netmask4(netif)); +#else + LWIP_UNUSED_ARG(old_nm); +#endif + mib2_remove_route_ip4(0, netif); + /* set new netmask to netif */ + ip4_addr_set(ip_2_ip4(&netif->netmask), netmask); + IP_SET_TYPE_VAL(netif->netmask, IPADDR_TYPE_V4); + mib2_add_route_ip4(0, netif); + LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: netmask of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + netif->name[0], netif->name[1], + ip4_addr1_16(netif_ip4_netmask(netif)), + ip4_addr2_16(netif_ip4_netmask(netif)), + ip4_addr3_16(netif_ip4_netmask(netif)), + ip4_addr4_16(netif_ip4_netmask(netif)))); + return 1; /* netmask changed */ + } + return 0; /* netmask unchanged */ +} + +/** + * @ingroup netif_ip4 + * Change the netmask of a network interface + * + * @param netif the network interface to change + * @param netmask the new netmask + * + * @note call netif_set_addr() if you also want to change ip address and + * default gateway + */ +void +netif_set_netmask(struct netif *netif, const ip4_addr_t *netmask) +{ +#if LWIP_NETIF_EXT_STATUS_CALLBACK + ip_addr_t old_nm_val; + ip_addr_t *old_nm = &old_nm_val; +#else + ip_addr_t *old_nm = NULL; +#endif + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("netif_set_netmask: invalid netif", netif != NULL, return); + + /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */ + if (netmask == NULL) { + netmask = IP4_ADDR_ANY4; + } + + if (netif_do_set_netmask(netif, netmask, old_nm)) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + netif_ext_callback_args_t args; + args.ipv4_changed.old_netmask = old_nm; + netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_NETMASK_CHANGED, &args); +#endif + } +} + +static int +netif_do_set_gw(struct netif *netif, const ip4_addr_t *gw, ip_addr_t *old_gw) +{ + /* address is actually being changed? */ + if (ip4_addr_cmp(gw, netif_ip4_gw(netif)) == 0) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + LWIP_ASSERT("invalid pointer", old_gw != NULL); + ip_addr_copy(*old_gw, *netif_ip_gw4(netif)); +#else + LWIP_UNUSED_ARG(old_gw); +#endif + + ip4_addr_set(ip_2_ip4(&netif->gw), gw); + IP_SET_TYPE_VAL(netif->gw, IPADDR_TYPE_V4); + LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: GW address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", + netif->name[0], netif->name[1], + ip4_addr1_16(netif_ip4_gw(netif)), + ip4_addr2_16(netif_ip4_gw(netif)), + ip4_addr3_16(netif_ip4_gw(netif)), + ip4_addr4_16(netif_ip4_gw(netif)))); + return 1; /* gateway changed */ + } + return 0; /* gateway unchanged */ +} + +/** + * @ingroup netif_ip4 + * Change the default gateway for a network interface + * + * @param netif the network interface to change + * @param gw the new default gateway + * + * @note call netif_set_addr() if you also want to change ip address and netmask + */ +void +netif_set_gw(struct netif *netif, const ip4_addr_t *gw) +{ +#if LWIP_NETIF_EXT_STATUS_CALLBACK + ip_addr_t old_gw_val; + ip_addr_t *old_gw = &old_gw_val; +#else + ip_addr_t *old_gw = NULL; +#endif + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("netif_set_gw: invalid netif", netif != NULL, return); + + /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */ + if (gw == NULL) { + gw = IP4_ADDR_ANY4; + } + + if (netif_do_set_gw(netif, gw, old_gw)) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + netif_ext_callback_args_t args; + args.ipv4_changed.old_gw = old_gw; + netif_invoke_ext_callback(netif, LWIP_NSC_IPV4_GATEWAY_CHANGED, &args); +#endif + } +} + +/** + * @ingroup netif_ip4 + * Change IP address configuration for a network interface (including netmask + * and default gateway). + * + * @param netif the network interface to change + * @param ipaddr the new IP address + * @param netmask the new netmask + * @param gw the new default gateway + */ +void +netif_set_addr(struct netif *netif, const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, + const ip4_addr_t *gw) +{ +#if LWIP_NETIF_EXT_STATUS_CALLBACK + netif_nsc_reason_t change_reason = LWIP_NSC_NONE; + netif_ext_callback_args_t cb_args; + ip_addr_t old_nm_val; + ip_addr_t old_gw_val; + ip_addr_t *old_nm = &old_nm_val; + ip_addr_t *old_gw = &old_gw_val; +#else + ip_addr_t *old_nm = NULL; + ip_addr_t *old_gw = NULL; +#endif + ip_addr_t old_addr; + int remove; + + LWIP_ASSERT_CORE_LOCKED(); + + /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */ + if (ipaddr == NULL) { + ipaddr = IP4_ADDR_ANY4; + } + if (netmask == NULL) { + netmask = IP4_ADDR_ANY4; + } + if (gw == NULL) { + gw = IP4_ADDR_ANY4; + } + + remove = ip4_addr_isany(ipaddr); + if (remove) { + /* when removing an address, we have to remove it *before* changing netmask/gw + to ensure that tcp RST segment can be sent correctly */ + if (netif_do_set_ipaddr(netif, ipaddr, &old_addr)) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + change_reason |= LWIP_NSC_IPV4_ADDRESS_CHANGED; + cb_args.ipv4_changed.old_address = &old_addr; +#endif + } + } + if (netif_do_set_netmask(netif, netmask, old_nm)) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + change_reason |= LWIP_NSC_IPV4_NETMASK_CHANGED; + cb_args.ipv4_changed.old_netmask = old_nm; +#endif + } + if (netif_do_set_gw(netif, gw, old_gw)) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + change_reason |= LWIP_NSC_IPV4_GATEWAY_CHANGED; + cb_args.ipv4_changed.old_gw = old_gw; +#endif + } + if (!remove) { + /* set ipaddr last to ensure netmask/gw have been set when status callback is called */ + if (netif_do_set_ipaddr(netif, ipaddr, &old_addr)) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + change_reason |= LWIP_NSC_IPV4_ADDRESS_CHANGED; + cb_args.ipv4_changed.old_address = &old_addr; +#endif + } + } + +#if LWIP_NETIF_EXT_STATUS_CALLBACK + if (change_reason != LWIP_NSC_NONE) { + change_reason |= LWIP_NSC_IPV4_SETTINGS_CHANGED; + netif_invoke_ext_callback(netif, change_reason, &cb_args); + } +#endif +} +#endif /* LWIP_IPV4*/ + +/** + * @ingroup netif + * Remove a network interface from the list of lwIP netifs. + * + * @param netif the network interface to remove + */ +void +netif_remove(struct netif *netif) +{ +#if LWIP_IPV6 + int i; +#endif + + LWIP_ASSERT_CORE_LOCKED(); + + if (netif == NULL) { + return; + } + + netif_invoke_ext_callback(netif, LWIP_NSC_NETIF_REMOVED, NULL); + +#if LWIP_IPV4 + if (!ip4_addr_isany_val(*netif_ip4_addr(netif))) { + netif_do_ip_addr_changed(netif_ip_addr4(netif), NULL); + } + +#if LWIP_IGMP + /* stop IGMP processing */ + if (netif->flags & NETIF_FLAG_IGMP) { + igmp_stop(netif); + } +#endif /* LWIP_IGMP */ +#endif /* LWIP_IPV4*/ + +#if LWIP_IPV6 + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i))) { + netif_do_ip_addr_changed(netif_ip_addr6(netif, i), NULL); + } + } +#if LWIP_IPV6_MLD + /* stop MLD processing */ + mld6_stop(netif); +#endif /* LWIP_IPV6_MLD */ +#endif /* LWIP_IPV6 */ + if (netif_is_up(netif)) { + /* set netif down before removing (call callback function) */ + netif_set_down(netif); + } + + mib2_remove_ip4(netif); + + /* this netif is default? */ + if (netif_default == netif) { + /* reset default netif */ + netif_set_default(NULL); + } +#if !LWIP_SINGLE_NETIF + /* is it the first netif? */ + if (netif_list == netif) { + netif_list = netif->next; + } else { + /* look for netif further down the list */ + struct netif *tmp_netif; + NETIF_FOREACH(tmp_netif) { + if (tmp_netif->next == netif) { + tmp_netif->next = netif->next; + break; + } + } + if (tmp_netif == NULL) { + return; /* netif is not on the list */ + } + } +#endif /* !LWIP_SINGLE_NETIF */ + mib2_netif_removed(netif); +#if LWIP_NETIF_REMOVE_CALLBACK + if (netif->remove_callback) { + netif->remove_callback(netif); + } +#endif /* LWIP_NETIF_REMOVE_CALLBACK */ + LWIP_DEBUGF( NETIF_DEBUG, ("netif_remove: removed netif\n") ); +} + +/** + * @ingroup netif + * Set a network interface as the default network interface + * (used to output all packets for which no specific route is found) + * + * @param netif the default network interface + */ +void +netif_set_default(struct netif *netif) +{ + LWIP_ASSERT_CORE_LOCKED(); + + if (netif == NULL) { + /* remove default route */ + mib2_remove_route_ip4(1, netif); + } else { + /* install default route */ + mib2_add_route_ip4(1, netif); + } + netif_default = netif; + LWIP_DEBUGF(NETIF_DEBUG, ("netif: setting default interface %c%c\n", + netif ? netif->name[0] : '\'', netif ? netif->name[1] : '\'')); +} + +/** + * @ingroup netif + * Bring an interface up, available for processing + * traffic. + */ +void +netif_set_up(struct netif *netif) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("netif_set_up: invalid netif", netif != NULL, return); + + if (!(netif->flags & NETIF_FLAG_UP)) { + netif_set_flags(netif, NETIF_FLAG_UP); + + MIB2_COPY_SYSUPTIME_TO(&netif->ts); + + NETIF_STATUS_CALLBACK(netif); + +#if LWIP_NETIF_EXT_STATUS_CALLBACK + { + netif_ext_callback_args_t args; + args.status_changed.state = 1; + netif_invoke_ext_callback(netif, LWIP_NSC_STATUS_CHANGED, &args); + } +#endif + + netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV4 | NETIF_REPORT_TYPE_IPV6); +#if LWIP_IPV6 + nd6_restart_netif(netif); +#endif /* LWIP_IPV6 */ + } +} + +/** Send ARP/IGMP/MLD/RS events, e.g. on link-up/netif-up or addr-change + */ +static void +netif_issue_reports(struct netif *netif, u8_t report_type) +{ + LWIP_ASSERT("netif_issue_reports: invalid netif", netif != NULL); + + /* Only send reports when both link and admin states are up */ + if (!(netif->flags & NETIF_FLAG_LINK_UP) || + !(netif->flags & NETIF_FLAG_UP)) { + return; + } + +#if LWIP_IPV4 + if ((report_type & NETIF_REPORT_TYPE_IPV4) && + !ip4_addr_isany_val(*netif_ip4_addr(netif))) { +#if LWIP_ARP + /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */ + if (netif->flags & (NETIF_FLAG_ETHARP)) { + etharp_gratuitous(netif); + } +#endif /* LWIP_ARP */ + +#if LWIP_IGMP + /* resend IGMP memberships */ + if (netif->flags & NETIF_FLAG_IGMP) { + igmp_report_groups(netif); + } +#endif /* LWIP_IGMP */ + } +#endif /* LWIP_IPV4 */ + +#if LWIP_IPV6 + if (report_type & NETIF_REPORT_TYPE_IPV6) { +#if LWIP_IPV6_MLD + /* send mld memberships */ + mld6_report_groups(netif); +#endif /* LWIP_IPV6_MLD */ + } +#endif /* LWIP_IPV6 */ +} + +/** + * @ingroup netif + * Bring an interface down, disabling any traffic processing. + */ +void +netif_set_down(struct netif *netif) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("netif_set_down: invalid netif", netif != NULL, return); + + if (netif->flags & NETIF_FLAG_UP) { +#if LWIP_NETIF_EXT_STATUS_CALLBACK + { + netif_ext_callback_args_t args; + args.status_changed.state = 0; + netif_invoke_ext_callback(netif, LWIP_NSC_STATUS_CHANGED, &args); + } +#endif + + netif_clear_flags(netif, NETIF_FLAG_UP); + MIB2_COPY_SYSUPTIME_TO(&netif->ts); + +#if LWIP_IPV4 && LWIP_ARP + if (netif->flags & NETIF_FLAG_ETHARP) { + etharp_cleanup_netif(netif); + } +#endif /* LWIP_IPV4 && LWIP_ARP */ + +#if LWIP_IPV6 + nd6_cleanup_netif(netif); +#endif /* LWIP_IPV6 */ + + NETIF_STATUS_CALLBACK(netif); + } +} + +#if LWIP_NETIF_STATUS_CALLBACK +/** + * @ingroup netif + * Set callback to be called when interface is brought up/down or address is changed while up + */ +void +netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback) +{ + LWIP_ASSERT_CORE_LOCKED(); + + if (netif) { + netif->status_callback = status_callback; + } +} +#endif /* LWIP_NETIF_STATUS_CALLBACK */ + +#if LWIP_NETIF_REMOVE_CALLBACK +/** + * @ingroup netif + * Set callback to be called when the interface has been removed + */ +void +netif_set_remove_callback(struct netif *netif, netif_status_callback_fn remove_callback) +{ + LWIP_ASSERT_CORE_LOCKED(); + + if (netif) { + netif->remove_callback = remove_callback; + } +} +#endif /* LWIP_NETIF_REMOVE_CALLBACK */ + +/** + * @ingroup netif + * Called by a driver when its link goes up + */ +void +netif_set_link_up(struct netif *netif) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("netif_set_link_up: invalid netif", netif != NULL, return); + + if (!(netif->flags & NETIF_FLAG_LINK_UP)) { + netif_set_flags(netif, NETIF_FLAG_LINK_UP); + +#if LWIP_DHCP + dhcp_network_changed(netif); +#endif /* LWIP_DHCP */ + +#if LWIP_AUTOIP + autoip_network_changed(netif); +#endif /* LWIP_AUTOIP */ + + netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV4 | NETIF_REPORT_TYPE_IPV6); +#if LWIP_IPV6 + nd6_restart_netif(netif); +#endif /* LWIP_IPV6 */ + + NETIF_LINK_CALLBACK(netif); +#if LWIP_NETIF_EXT_STATUS_CALLBACK + { + netif_ext_callback_args_t args; + args.link_changed.state = 1; + netif_invoke_ext_callback(netif, LWIP_NSC_LINK_CHANGED, &args); + } +#endif + } +} + +/** + * @ingroup netif + * Called by a driver when its link goes down + */ +void +netif_set_link_down(struct netif *netif) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("netif_set_link_down: invalid netif", netif != NULL, return); + + if (netif->flags & NETIF_FLAG_LINK_UP) { + netif_clear_flags(netif, NETIF_FLAG_LINK_UP); + NETIF_LINK_CALLBACK(netif); +#if LWIP_NETIF_EXT_STATUS_CALLBACK + { + netif_ext_callback_args_t args; + args.link_changed.state = 0; + netif_invoke_ext_callback(netif, LWIP_NSC_LINK_CHANGED, &args); + } +#endif + } +} + +#if LWIP_NETIF_LINK_CALLBACK +/** + * @ingroup netif + * Set callback to be called when link is brought up/down + */ +void +netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback) +{ + LWIP_ASSERT_CORE_LOCKED(); + + if (netif) { + netif->link_callback = link_callback; + } +} +#endif /* LWIP_NETIF_LINK_CALLBACK */ + +#if ENABLE_LOOPBACK +/** + * @ingroup netif + * Send an IP packet to be received on the same netif (loopif-like). + * The pbuf is simply copied and handed back to netif->input. + * In multithreaded mode, this is done directly since netif->input must put + * the packet on a queue. + * In callback mode, the packet is put on an internal queue and is fed to + * netif->input by netif_poll(). + * + * @param netif the lwip network interface structure + * @param p the (IP) packet to 'send' + * @return ERR_OK if the packet has been sent + * ERR_MEM if the pbuf used to copy the packet couldn't be allocated + */ +err_t +netif_loop_output(struct netif *netif, struct pbuf *p) +{ + struct pbuf *r; + err_t err; + struct pbuf *last; +#if LWIP_LOOPBACK_MAX_PBUFS + u16_t clen = 0; +#endif /* LWIP_LOOPBACK_MAX_PBUFS */ + /* If we have a loopif, SNMP counters are adjusted for it, + * if not they are adjusted for 'netif'. */ +#if MIB2_STATS +#if LWIP_HAVE_LOOPIF + struct netif *stats_if = &loop_netif; +#else /* LWIP_HAVE_LOOPIF */ + struct netif *stats_if = netif; +#endif /* LWIP_HAVE_LOOPIF */ +#endif /* MIB2_STATS */ +#if LWIP_NETIF_LOOPBACK_MULTITHREADING + u8_t schedule_poll = 0; +#endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ + SYS_ARCH_DECL_PROTECT(lev); + + LWIP_ASSERT("netif_loop_output: invalid netif", netif != NULL); + LWIP_ASSERT("netif_loop_output: invalid pbuf", p != NULL); + + /* Allocate a new pbuf */ + r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM); + if (r == NULL) { + LINK_STATS_INC(link.memerr); + LINK_STATS_INC(link.drop); + MIB2_STATS_NETIF_INC(stats_if, ifoutdiscards); + return ERR_MEM; + } +#if LWIP_LOOPBACK_MAX_PBUFS + clen = pbuf_clen(r); + /* check for overflow or too many pbuf on queue */ + if (((netif->loop_cnt_current + clen) < netif->loop_cnt_current) || + ((netif->loop_cnt_current + clen) > LWIP_MIN(LWIP_LOOPBACK_MAX_PBUFS, 0xFFFF))) { + pbuf_free(r); + LINK_STATS_INC(link.memerr); + LINK_STATS_INC(link.drop); + MIB2_STATS_NETIF_INC(stats_if, ifoutdiscards); + return ERR_MEM; + } + netif->loop_cnt_current = (u16_t)(netif->loop_cnt_current + clen); +#endif /* LWIP_LOOPBACK_MAX_PBUFS */ + + /* Copy the whole pbuf queue p into the single pbuf r */ + if ((err = pbuf_copy(r, p)) != ERR_OK) { + pbuf_free(r); + LINK_STATS_INC(link.memerr); + LINK_STATS_INC(link.drop); + MIB2_STATS_NETIF_INC(stats_if, ifoutdiscards); + return err; + } + + /* Put the packet on a linked list which gets emptied through calling + netif_poll(). */ + + /* let last point to the last pbuf in chain r */ + for (last = r; last->next != NULL; last = last->next) { + /* nothing to do here, just get to the last pbuf */ + } + + SYS_ARCH_PROTECT(lev); + if (netif->loop_first != NULL) { + LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL); + netif->loop_last->next = r; + netif->loop_last = last; + } else { + netif->loop_first = r; + netif->loop_last = last; +#if LWIP_NETIF_LOOPBACK_MULTITHREADING + /* No existing packets queued, schedule poll */ + schedule_poll = 1; +#endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ + } + SYS_ARCH_UNPROTECT(lev); + + LINK_STATS_INC(link.xmit); + MIB2_STATS_NETIF_ADD(stats_if, ifoutoctets, p->tot_len); + MIB2_STATS_NETIF_INC(stats_if, ifoutucastpkts); + +#if LWIP_NETIF_LOOPBACK_MULTITHREADING + /* For multithreading environment, schedule a call to netif_poll */ + if (schedule_poll) { + tcpip_try_callback((tcpip_callback_fn)netif_poll, netif); + } +#endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */ + + return ERR_OK; +} + +#if LWIP_HAVE_LOOPIF +#if LWIP_IPV4 +static err_t +netif_loop_output_ipv4(struct netif *netif, struct pbuf *p, const ip4_addr_t *addr) +{ + LWIP_UNUSED_ARG(addr); + return netif_loop_output(netif, p); +} +#endif /* LWIP_IPV4 */ + +#if LWIP_IPV6 +static err_t +netif_loop_output_ipv6(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr) +{ + LWIP_UNUSED_ARG(addr); + return netif_loop_output(netif, p); +} +#endif /* LWIP_IPV6 */ +#endif /* LWIP_HAVE_LOOPIF */ + + +/** + * Call netif_poll() in the main loop of your application. This is to prevent + * reentering non-reentrant functions like tcp_input(). Packets passed to + * netif_loop_output() are put on a list that is passed to netif->input() by + * netif_poll(). + */ +void +netif_poll(struct netif *netif) +{ + /* If we have a loopif, SNMP counters are adjusted for it, + * if not they are adjusted for 'netif'. */ +#if MIB2_STATS +#if LWIP_HAVE_LOOPIF + struct netif *stats_if = &loop_netif; +#else /* LWIP_HAVE_LOOPIF */ + struct netif *stats_if = netif; +#endif /* LWIP_HAVE_LOOPIF */ +#endif /* MIB2_STATS */ + SYS_ARCH_DECL_PROTECT(lev); + + LWIP_ASSERT("netif_poll: invalid netif", netif != NULL); + + /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */ + SYS_ARCH_PROTECT(lev); + while (netif->loop_first != NULL) { + struct pbuf *in, *in_end; +#if LWIP_LOOPBACK_MAX_PBUFS + u8_t clen = 1; +#endif /* LWIP_LOOPBACK_MAX_PBUFS */ + + in = in_end = netif->loop_first; + while (in_end->len != in_end->tot_len) { + LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL); + in_end = in_end->next; +#if LWIP_LOOPBACK_MAX_PBUFS + clen++; +#endif /* LWIP_LOOPBACK_MAX_PBUFS */ + } +#if LWIP_LOOPBACK_MAX_PBUFS + /* adjust the number of pbufs on queue */ + LWIP_ASSERT("netif->loop_cnt_current underflow", + ((netif->loop_cnt_current - clen) < netif->loop_cnt_current)); + netif->loop_cnt_current = (u16_t)(netif->loop_cnt_current - clen); +#endif /* LWIP_LOOPBACK_MAX_PBUFS */ + + /* 'in_end' now points to the last pbuf from 'in' */ + if (in_end == netif->loop_last) { + /* this was the last pbuf in the list */ + netif->loop_first = netif->loop_last = NULL; + } else { + /* pop the pbuf off the list */ + netif->loop_first = in_end->next; + LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL); + } + /* De-queue the pbuf from its successors on the 'loop_' list. */ + in_end->next = NULL; + SYS_ARCH_UNPROTECT(lev); + + in->if_idx = netif_get_index(netif); + + LINK_STATS_INC(link.recv); + MIB2_STATS_NETIF_ADD(stats_if, ifinoctets, in->tot_len); + MIB2_STATS_NETIF_INC(stats_if, ifinucastpkts); + /* loopback packets are always IP packets! */ + if (ip_input(in, netif) != ERR_OK) { + pbuf_free(in); + } + SYS_ARCH_PROTECT(lev); + } + SYS_ARCH_UNPROTECT(lev); +} + +#if !LWIP_NETIF_LOOPBACK_MULTITHREADING +/** + * Calls netif_poll() for every netif on the netif_list. + */ +void +netif_poll_all(void) +{ + struct netif *netif; + /* loop through netifs */ + NETIF_FOREACH(netif) { + netif_poll(netif); + } +} +#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */ +#endif /* ENABLE_LOOPBACK */ + +#if LWIP_NUM_NETIF_CLIENT_DATA > 0 +/** + * @ingroup netif_cd + * Allocate an index to store data in client_data member of struct netif. + * Returned value is an index in mentioned array. + * @see LWIP_NUM_NETIF_CLIENT_DATA + */ +u8_t +netif_alloc_client_data_id(void) +{ + u8_t result = netif_client_id; + netif_client_id++; + + LWIP_ASSERT_CORE_LOCKED(); + +#if LWIP_NUM_NETIF_CLIENT_DATA > 256 +#error LWIP_NUM_NETIF_CLIENT_DATA must be <= 256 +#endif + LWIP_ASSERT("Increase LWIP_NUM_NETIF_CLIENT_DATA in lwipopts.h", result < LWIP_NUM_NETIF_CLIENT_DATA); + return (u8_t)(result + LWIP_NETIF_CLIENT_DATA_INDEX_MAX); +} +#endif + +#if LWIP_IPV6 +/** + * @ingroup netif_ip6 + * Change an IPv6 address of a network interface + * + * @param netif the network interface to change + * @param addr_idx index of the IPv6 address + * @param addr6 the new IPv6 address + * + * @note call netif_ip6_addr_set_state() to set the address valid/temptative + */ +void +netif_ip6_addr_set(struct netif *netif, s8_t addr_idx, const ip6_addr_t *addr6) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ASSERT("netif_ip6_addr_set: invalid netif", netif != NULL); + LWIP_ASSERT("netif_ip6_addr_set: invalid addr6", addr6 != NULL); + + netif_ip6_addr_set_parts(netif, addr_idx, addr6->addr[0], addr6->addr[1], + addr6->addr[2], addr6->addr[3]); +} + +/* + * Change an IPv6 address of a network interface (internal version taking 4 * u32_t) + * + * @param netif the network interface to change + * @param addr_idx index of the IPv6 address + * @param i0 word0 of the new IPv6 address + * @param i1 word1 of the new IPv6 address + * @param i2 word2 of the new IPv6 address + * @param i3 word3 of the new IPv6 address + */ +void +netif_ip6_addr_set_parts(struct netif *netif, s8_t addr_idx, u32_t i0, u32_t i1, u32_t i2, u32_t i3) +{ + ip_addr_t old_addr; + ip_addr_t new_ipaddr; + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ASSERT("netif != NULL", netif != NULL); + LWIP_ASSERT("invalid index", addr_idx < LWIP_IPV6_NUM_ADDRESSES); + + ip6_addr_copy(*ip_2_ip6(&old_addr), *netif_ip6_addr(netif, addr_idx)); + IP_SET_TYPE_VAL(old_addr, IPADDR_TYPE_V6); + + /* address is actually being changed? */ + if ((ip_2_ip6(&old_addr)->addr[0] != i0) || (ip_2_ip6(&old_addr)->addr[1] != i1) || + (ip_2_ip6(&old_addr)->addr[2] != i2) || (ip_2_ip6(&old_addr)->addr[3] != i3)) { + LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_ip6_addr_set: netif address being changed\n")); + + IP_ADDR6(&new_ipaddr, i0, i1, i2, i3); + ip6_addr_assign_zone(ip_2_ip6(&new_ipaddr), IP6_UNICAST, netif); + + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, addr_idx))) { + netif_do_ip_addr_changed(netif_ip_addr6(netif, addr_idx), &new_ipaddr); + } + /* @todo: remove/readd mib2 ip6 entries? */ + + ip_addr_copy(netif->ip6_addr[addr_idx], new_ipaddr); + + if (ip6_addr_isvalid(netif_ip6_addr_state(netif, addr_idx))) { + netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV6); + NETIF_STATUS_CALLBACK(netif); + } + +#if LWIP_NETIF_EXT_STATUS_CALLBACK + { + netif_ext_callback_args_t args; + args.ipv6_set.addr_index = addr_idx; + args.ipv6_set.old_address = &old_addr; + netif_invoke_ext_callback(netif, LWIP_NSC_IPV6_SET, &args); + } +#endif + } + + LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: IPv6 address %d of interface %c%c set to %s/0x%"X8_F"\n", + addr_idx, netif->name[0], netif->name[1], ip6addr_ntoa(netif_ip6_addr(netif, addr_idx)), + netif_ip6_addr_state(netif, addr_idx))); +} + +/** + * @ingroup netif_ip6 + * Change the state of an IPv6 address of a network interface + * (INVALID, TEMPTATIVE, PREFERRED, DEPRECATED, where TEMPTATIVE + * includes the number of checks done, see ip6_addr.h) + * + * @param netif the network interface to change + * @param addr_idx index of the IPv6 address + * @param state the new IPv6 address state + */ +void +netif_ip6_addr_set_state(struct netif *netif, s8_t addr_idx, u8_t state) +{ + u8_t old_state; + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ASSERT("netif != NULL", netif != NULL); + LWIP_ASSERT("invalid index", addr_idx < LWIP_IPV6_NUM_ADDRESSES); + + old_state = netif_ip6_addr_state(netif, addr_idx); + /* state is actually being changed? */ + if (old_state != state) { + u8_t old_valid = old_state & IP6_ADDR_VALID; + u8_t new_valid = state & IP6_ADDR_VALID; + LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_ip6_addr_set_state: netif address state being changed\n")); + +#if LWIP_IPV6_MLD + /* Reevaluate solicited-node multicast group membership. */ + if (netif->flags & NETIF_FLAG_MLD6) { + nd6_adjust_mld_membership(netif, addr_idx, state); + } +#endif /* LWIP_IPV6_MLD */ + + if (old_valid && !new_valid) { + /* address about to be removed by setting invalid */ + netif_do_ip_addr_changed(netif_ip_addr6(netif, addr_idx), NULL); + /* @todo: remove mib2 ip6 entries? */ + } + netif->ip6_addr_state[addr_idx] = state; + + if (!old_valid && new_valid) { + /* address added by setting valid */ + /* This is a good moment to check that the address is properly zoned. */ + IP6_ADDR_ZONECHECK_NETIF(netif_ip6_addr(netif, addr_idx), netif); + /* @todo: add mib2 ip6 entries? */ + netif_issue_reports(netif, NETIF_REPORT_TYPE_IPV6); + } + if ((old_state & ~IP6_ADDR_TENTATIVE_COUNT_MASK) != + (state & ~IP6_ADDR_TENTATIVE_COUNT_MASK)) { + /* address state has changed -> call the callback function */ + NETIF_STATUS_CALLBACK(netif); + } + +#if LWIP_NETIF_EXT_STATUS_CALLBACK + { + netif_ext_callback_args_t args; + args.ipv6_addr_state_changed.addr_index = addr_idx; + args.ipv6_addr_state_changed.old_state = old_state; + args.ipv6_addr_state_changed.address = netif_ip_addr6(netif, addr_idx); + netif_invoke_ext_callback(netif, LWIP_NSC_IPV6_ADDR_STATE_CHANGED, &args); + } +#endif + } + LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("netif: IPv6 address %d of interface %c%c set to %s/0x%"X8_F"\n", + addr_idx, netif->name[0], netif->name[1], ip6addr_ntoa(netif_ip6_addr(netif, addr_idx)), + netif_ip6_addr_state(netif, addr_idx))); +} + +/** + * Checks if a specific local address is present on the netif and returns its + * index. Depending on its state, it may or may not be assigned to the + * interface (as per RFC terminology). + * + * The given address may or may not be zoned (i.e., have a zone index other + * than IP6_NO_ZONE). If the address is zoned, it must have the correct zone + * for the given netif, or no match will be found. + * + * @param netif the netif to check + * @param ip6addr the IPv6 address to find + * @return >= 0: address found, this is its index + * -1: address not found on this netif + */ +s8_t +netif_get_ip6_addr_match(struct netif *netif, const ip6_addr_t *ip6addr) +{ + s8_t i; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ASSERT("netif_get_ip6_addr_match: invalid netif", netif != NULL); + LWIP_ASSERT("netif_get_ip6_addr_match: invalid ip6addr", ip6addr != NULL); + +#if LWIP_IPV6_SCOPES + if (ip6_addr_has_zone(ip6addr) && !ip6_addr_test_zone(ip6addr, netif)) { + return -1; /* wrong zone, no match */ + } +#endif /* LWIP_IPV6_SCOPES */ + + for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (!ip6_addr_isinvalid(netif_ip6_addr_state(netif, i)) && + ip6_addr_cmp_zoneless(netif_ip6_addr(netif, i), ip6addr)) { + return i; + } + } + return -1; +} + +/** + * @ingroup netif_ip6 + * Create a link-local IPv6 address on a netif (stored in slot 0) + * + * @param netif the netif to create the address on + * @param from_mac_48bit if != 0, assume hwadr is a 48-bit MAC address (std conversion) + * if == 0, use hwaddr directly as interface ID + */ +void +netif_create_ip6_linklocal_address(struct netif *netif, u8_t from_mac_48bit) +{ + u8_t i, addr_index; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ASSERT("netif_create_ip6_linklocal_address: invalid netif", netif != NULL); + + /* Link-local prefix. */ + ip_2_ip6(&netif->ip6_addr[0])->addr[0] = PP_HTONL(0xfe800000ul); + ip_2_ip6(&netif->ip6_addr[0])->addr[1] = 0; + + /* Generate interface ID. */ + if (from_mac_48bit) { + /* Assume hwaddr is a 48-bit IEEE 802 MAC. Convert to EUI-64 address. Complement Group bit. */ + ip_2_ip6(&netif->ip6_addr[0])->addr[2] = lwip_htonl((((u32_t)(netif->hwaddr[0] ^ 0x02)) << 24) | + ((u32_t)(netif->hwaddr[1]) << 16) | + ((u32_t)(netif->hwaddr[2]) << 8) | + (0xff)); + ip_2_ip6(&netif->ip6_addr[0])->addr[3] = lwip_htonl((u32_t)(0xfeul << 24) | + ((u32_t)(netif->hwaddr[3]) << 16) | + ((u32_t)(netif->hwaddr[4]) << 8) | + (netif->hwaddr[5])); + } else { + /* Use hwaddr directly as interface ID. */ + ip_2_ip6(&netif->ip6_addr[0])->addr[2] = 0; + ip_2_ip6(&netif->ip6_addr[0])->addr[3] = 0; + + addr_index = 3; + for (i = 0; (i < 8) && (i < netif->hwaddr_len); i++) { + if (i == 4) { + addr_index--; + } + ip_2_ip6(&netif->ip6_addr[0])->addr[addr_index] |= lwip_htonl(((u32_t)(netif->hwaddr[netif->hwaddr_len - i - 1])) << (8 * (i & 0x03))); + } + } + + /* Set a link-local zone. Even though the zone is implied by the owning + * netif, setting the zone anyway has two important conceptual advantages: + * 1) it avoids the need for a ton of exceptions in internal code, allowing + * e.g. ip6_addr_cmp() to be used on local addresses; + * 2) the properly zoned address is visible externally, e.g. when any outside + * code enumerates available addresses or uses one to bind a socket. + * Any external code unaware of address scoping is likely to just ignore the + * zone field, so this should not create any compatibility problems. */ + ip6_addr_assign_zone(ip_2_ip6(&netif->ip6_addr[0]), IP6_UNICAST, netif); + + /* Set address state. */ +#if LWIP_IPV6_DUP_DETECT_ATTEMPTS + /* Will perform duplicate address detection (DAD). */ + netif_ip6_addr_set_state(netif, 0, IP6_ADDR_TENTATIVE); +#else + /* Consider address valid. */ + netif_ip6_addr_set_state(netif, 0, IP6_ADDR_PREFERRED); +#endif /* LWIP_IPV6_AUTOCONFIG */ +} + +/** + * @ingroup netif_ip6 + * This function allows for the easy addition of a new IPv6 address to an interface. + * It takes care of finding an empty slot and then sets the address tentative + * (to make sure that all the subsequent processing happens). + * + * @param netif netif to add the address on + * @param ip6addr address to add + * @param chosen_idx if != NULL, the chosen IPv6 address index will be stored here + */ +err_t +netif_add_ip6_address(struct netif *netif, const ip6_addr_t *ip6addr, s8_t *chosen_idx) +{ + s8_t i; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ASSERT("netif_add_ip6_address: invalid netif", netif != NULL); + LWIP_ASSERT("netif_add_ip6_address: invalid ip6addr", ip6addr != NULL); + + i = netif_get_ip6_addr_match(netif, ip6addr); + if (i >= 0) { + /* Address already added */ + if (chosen_idx != NULL) { + *chosen_idx = i; + } + return ERR_OK; + } + + /* Find a free slot. The first one is reserved for link-local addresses. */ + for (i = ip6_addr_islinklocal(ip6addr) ? 0 : 1; i < LWIP_IPV6_NUM_ADDRESSES; i++) { + if (ip6_addr_isinvalid(netif_ip6_addr_state(netif, i))) { + ip_addr_copy_from_ip6(netif->ip6_addr[i], *ip6addr); + ip6_addr_assign_zone(ip_2_ip6(&netif->ip6_addr[i]), IP6_UNICAST, netif); + netif_ip6_addr_set_state(netif, i, IP6_ADDR_TENTATIVE); + if (chosen_idx != NULL) { + *chosen_idx = i; + } + return ERR_OK; + } + } + + if (chosen_idx != NULL) { + *chosen_idx = -1; + } + return ERR_VAL; +} + +/** Dummy IPv6 output function for netifs not supporting IPv6 + */ +static err_t +netif_null_output_ip6(struct netif *netif, struct pbuf *p, const ip6_addr_t *ipaddr) +{ + LWIP_UNUSED_ARG(netif); + LWIP_UNUSED_ARG(p); + LWIP_UNUSED_ARG(ipaddr); + + return ERR_IF; +} +#endif /* LWIP_IPV6 */ + +#if LWIP_IPV4 +/** Dummy IPv4 output function for netifs not supporting IPv4 + */ +static err_t +netif_null_output_ip4(struct netif *netif, struct pbuf *p, const ip4_addr_t *ipaddr) +{ + LWIP_UNUSED_ARG(netif); + LWIP_UNUSED_ARG(p); + LWIP_UNUSED_ARG(ipaddr); + + return ERR_IF; +} +#endif /* LWIP_IPV4 */ + +/** +* @ingroup netif +* Return the interface index for the netif with name +* or NETIF_NO_INDEX if not found/on error +* +* @param name the name of the netif +*/ +u8_t +netif_name_to_index(const char *name) +{ + struct netif *netif = netif_find(name); + if (netif != NULL) { + return netif_get_index(netif); + } + /* No name found, return invalid index */ + return NETIF_NO_INDEX; +} + +/** +* @ingroup netif +* Return the interface name for the netif matching index +* or NULL if not found/on error +* +* @param idx the interface index of the netif +* @param name char buffer of at least NETIF_NAMESIZE bytes +*/ +char * +netif_index_to_name(u8_t idx, char *name) +{ + struct netif *netif = netif_get_by_index(idx); + + if (netif != NULL) { + name[0] = netif->name[0]; + name[1] = netif->name[1]; + lwip_itoa(&name[2], NETIF_NAMESIZE - 2, netif_index_to_num(idx)); + return name; + } + return NULL; +} + +/** +* @ingroup netif +* Return the interface for the netif index +* +* @param idx index of netif to find +*/ +struct netif * +netif_get_by_index(u8_t idx) +{ + struct netif *netif; + + LWIP_ASSERT_CORE_LOCKED(); + + if (idx != NETIF_NO_INDEX) { + NETIF_FOREACH(netif) { + if (idx == netif_get_index(netif)) { + return netif; /* found! */ + } + } + } + + return NULL; +} + +/** + * @ingroup netif + * Find a network interface by searching for its name + * + * @param name the name of the netif (like netif->name) plus concatenated number + * in ascii representation (e.g. 'en0') + */ +struct netif * +netif_find(const char *name) +{ + struct netif *netif; + u8_t num; + + LWIP_ASSERT_CORE_LOCKED(); + + if (name == NULL) { + return NULL; + } + + num = (u8_t)atoi(&name[2]); + + NETIF_FOREACH(netif) { + if (num == netif->num && + name[0] == netif->name[0] && + name[1] == netif->name[1]) { + LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: found %c%c\n", name[0], name[1])); + return netif; + } + } + LWIP_DEBUGF(NETIF_DEBUG, ("netif_find: didn't find %c%c\n", name[0], name[1])); + return NULL; +} + +#if LWIP_NETIF_EXT_STATUS_CALLBACK +/** + * @ingroup netif + * Add extended netif events listener + * @param callback pointer to listener structure + * @param fn callback function + */ +void +netif_add_ext_callback(netif_ext_callback_t *callback, netif_ext_callback_fn fn) +{ + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ASSERT("callback must be != NULL", callback != NULL); + LWIP_ASSERT("fn must be != NULL", fn != NULL); + + callback->callback_fn = fn; + callback->next = ext_callback; + ext_callback = callback; +} + +/** + * @ingroup netif + * Remove extended netif events listener + * @param callback pointer to listener structure + */ +void +netif_remove_ext_callback(netif_ext_callback_t* callback) +{ + netif_ext_callback_t *last, *iter; + + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ASSERT("callback must be != NULL", callback != NULL); + + if (ext_callback == NULL) { + return; + } + + if (callback == ext_callback) { + ext_callback = ext_callback->next; + } else { + last = ext_callback; + for (iter = ext_callback->next; iter != NULL; last = iter, iter = iter->next) { + if (iter == callback) { + LWIP_ASSERT("last != NULL", last != NULL); + last->next = callback->next; + callback->next = NULL; + return; + } + } + } +} + +/** + * Invoke extended netif status event + * @param netif netif that is affected by change + * @param reason change reason + * @param args depends on reason, see reason description + */ +void +netif_invoke_ext_callback(struct netif *netif, netif_nsc_reason_t reason, const netif_ext_callback_args_t *args) +{ + netif_ext_callback_t *callback = ext_callback; + + LWIP_ASSERT("netif must be != NULL", netif != NULL); + + while (callback != NULL) { + callback->callback_fn(netif, reason, args); + callback = callback->next; + } +} +#endif /* LWIP_NETIF_EXT_STATUS_CALLBACK */ diff --git a/Other/tun2socks/core/c/core/pbuf.c b/Other/tun2socks/core/c/core/pbuf.c new file mode 100644 index 0000000..a209e0c --- /dev/null +++ b/Other/tun2socks/core/c/core/pbuf.c @@ -0,0 +1,1514 @@ +/** + * @file + * Packet buffer management + */ + +/** + * @defgroup pbuf Packet buffers (PBUF) + * @ingroup infrastructure + * + * Packets are built from the pbuf data structure. It supports dynamic + * memory allocation for packet contents or can reference externally + * managed packet contents both in RAM and ROM. Quick allocation for + * incoming packets is provided through pools with fixed sized pbufs. + * + * A packet may span over multiple pbufs, chained as a singly linked + * list. This is called a "pbuf chain". + * + * Multiple packets may be queued, also using this singly linked list. + * This is called a "packet queue". + * + * So, a packet queue consists of one or more pbuf chains, each of + * which consist of one or more pbufs. CURRENTLY, PACKET QUEUES ARE + * NOT SUPPORTED!!! Use helper structs to queue multiple packets. + * + * The differences between a pbuf chain and a packet queue are very + * precise but subtle. + * + * The last pbuf of a packet has a ->tot_len field that equals the + * ->len field. It can be found by traversing the list. If the last + * pbuf of a packet has a ->next field other than NULL, more packets + * are on the queue. + * + * Therefore, looping through a pbuf of a single packet, has an + * loop end condition (tot_len == p->len), NOT (next == NULL). + * + * Example of custom pbuf usage: @ref zerocopyrx + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#include "lwip/pbuf.h" +#include "lwip/stats.h" +#include "lwip/def.h" +#include "lwip/mem.h" +#include "lwip/memp.h" +#include "lwip/sys.h" +#include "lwip/netif.h" +#if LWIP_TCP && TCP_QUEUE_OOSEQ +#include "lwip/priv/tcp_priv.h" +#endif +#if LWIP_CHECKSUM_ON_COPY +#include "lwip/inet_chksum.h" +#endif + +#include + +#define SIZEOF_STRUCT_PBUF LWIP_MEM_ALIGN_SIZE(sizeof(struct pbuf)) +/* Since the pool is created in memp, PBUF_POOL_BUFSIZE will be automatically + aligned there. Therefore, PBUF_POOL_BUFSIZE_ALIGNED can be used here. */ +#define PBUF_POOL_BUFSIZE_ALIGNED LWIP_MEM_ALIGN_SIZE(PBUF_POOL_BUFSIZE) + +static const struct pbuf * +pbuf_skip_const(const struct pbuf *in, u16_t in_offset, u16_t *out_offset); + +#if !LWIP_TCP || !TCP_QUEUE_OOSEQ || !PBUF_POOL_FREE_OOSEQ +#define PBUF_POOL_IS_EMPTY() +#else /* !LWIP_TCP || !TCP_QUEUE_OOSEQ || !PBUF_POOL_FREE_OOSEQ */ + +#if !NO_SYS +#ifndef PBUF_POOL_FREE_OOSEQ_QUEUE_CALL +#include "lwip/tcpip.h" +#define PBUF_POOL_FREE_OOSEQ_QUEUE_CALL() do { \ + if (tcpip_try_callback(pbuf_free_ooseq_callback, NULL) != ERR_OK) { \ + SYS_ARCH_PROTECT(old_level); \ + pbuf_free_ooseq_pending = 0; \ + SYS_ARCH_UNPROTECT(old_level); \ + } } while(0) +#endif /* PBUF_POOL_FREE_OOSEQ_QUEUE_CALL */ +#endif /* !NO_SYS */ + +volatile u8_t pbuf_free_ooseq_pending; +#define PBUF_POOL_IS_EMPTY() pbuf_pool_is_empty() + +/** + * Attempt to reclaim some memory from queued out-of-sequence TCP segments + * if we run out of pool pbufs. It's better to give priority to new packets + * if we're running out. + * + * This must be done in the correct thread context therefore this function + * can only be used with NO_SYS=0 and through tcpip_callback. + */ +#if !NO_SYS +static +#endif /* !NO_SYS */ +void +pbuf_free_ooseq(void) +{ + struct tcp_pcb *pcb; + SYS_ARCH_SET(pbuf_free_ooseq_pending, 0); + + for (pcb = tcp_active_pcbs; NULL != pcb; pcb = pcb->next) { + if (pcb->ooseq != NULL) { + /** Free the ooseq pbufs of one PCB only */ + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_free_ooseq: freeing out-of-sequence pbufs\n")); + tcp_free_ooseq(pcb); + return; + } + } +} + +#if !NO_SYS +/** + * Just a callback function for tcpip_callback() that calls pbuf_free_ooseq(). + */ +static void +pbuf_free_ooseq_callback(void *arg) +{ + LWIP_UNUSED_ARG(arg); + pbuf_free_ooseq(); +} +#endif /* !NO_SYS */ + +/** Queue a call to pbuf_free_ooseq if not already queued. */ +static void +pbuf_pool_is_empty(void) +{ +#ifndef PBUF_POOL_FREE_OOSEQ_QUEUE_CALL + SYS_ARCH_SET(pbuf_free_ooseq_pending, 1); +#else /* PBUF_POOL_FREE_OOSEQ_QUEUE_CALL */ + u8_t queued; + SYS_ARCH_DECL_PROTECT(old_level); + SYS_ARCH_PROTECT(old_level); + queued = pbuf_free_ooseq_pending; + pbuf_free_ooseq_pending = 1; + SYS_ARCH_UNPROTECT(old_level); + + if (!queued) { + /* queue a call to pbuf_free_ooseq if not already queued */ + PBUF_POOL_FREE_OOSEQ_QUEUE_CALL(); + } +#endif /* PBUF_POOL_FREE_OOSEQ_QUEUE_CALL */ +} +#endif /* !LWIP_TCP || !TCP_QUEUE_OOSEQ || !PBUF_POOL_FREE_OOSEQ */ + +/* Initialize members of struct pbuf after allocation */ +static void +pbuf_init_alloced_pbuf(struct pbuf *p, void *payload, u16_t tot_len, u16_t len, pbuf_type type, u8_t flags) +{ + p->next = NULL; + p->payload = payload; + p->tot_len = tot_len; + p->len = len; + p->type_internal = (u8_t)type; + p->flags = flags; + p->ref = 1; + p->if_idx = NETIF_NO_INDEX; +} + +/** + * @ingroup pbuf + * Allocates a pbuf of the given type (possibly a chain for PBUF_POOL type). + * + * The actual memory allocated for the pbuf is determined by the + * layer at which the pbuf is allocated and the requested size + * (from the size parameter). + * + * @param layer header size + * @param length size of the pbuf's payload + * @param type this parameter decides how and where the pbuf + * should be allocated as follows: + * + * - PBUF_RAM: buffer memory for pbuf is allocated as one large + * chunk. This includes protocol headers as well. + * - PBUF_ROM: no buffer memory is allocated for the pbuf, even for + * protocol headers. Additional headers must be prepended + * by allocating another pbuf and chain in to the front of + * the ROM pbuf. It is assumed that the memory used is really + * similar to ROM in that it is immutable and will not be + * changed. Memory which is dynamic should generally not + * be attached to PBUF_ROM pbufs. Use PBUF_REF instead. + * - PBUF_REF: no buffer memory is allocated for the pbuf, even for + * protocol headers. It is assumed that the pbuf is only + * being used in a single thread. If the pbuf gets queued, + * then pbuf_take should be called to copy the buffer. + * - PBUF_POOL: the pbuf is allocated as a pbuf chain, with pbufs from + * the pbuf pool that is allocated during pbuf_init(). + * + * @return the allocated pbuf. If multiple pbufs where allocated, this + * is the first pbuf of a pbuf chain. + */ +struct pbuf * +pbuf_alloc(pbuf_layer layer, u16_t length, pbuf_type type) +{ + struct pbuf *p; + u16_t offset = (u16_t)layer; + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_alloc(length=%"U16_F")\n", length)); + + switch (type) { + case PBUF_REF: /* fall through */ + case PBUF_ROM: + p = pbuf_alloc_reference(NULL, length, type); + break; + case PBUF_POOL: { + struct pbuf *q, *last; + u16_t rem_len; /* remaining length */ + p = NULL; + last = NULL; + rem_len = length; + do { + u16_t qlen; + q = (struct pbuf *)memp_malloc(MEMP_PBUF_POOL); + if (q == NULL) { + PBUF_POOL_IS_EMPTY(); + /* free chain so far allocated */ + if (p) { + pbuf_free(p); + } + /* bail out unsuccessfully */ + return NULL; + } + qlen = LWIP_MIN(rem_len, (u16_t)(PBUF_POOL_BUFSIZE_ALIGNED - LWIP_MEM_ALIGN_SIZE(offset))); + pbuf_init_alloced_pbuf(q, LWIP_MEM_ALIGN((void *)((u8_t *)q + SIZEOF_STRUCT_PBUF + offset)), + rem_len, qlen, type, 0); + LWIP_ASSERT("pbuf_alloc: pbuf q->payload properly aligned", + ((mem_ptr_t)q->payload % MEM_ALIGNMENT) == 0); + LWIP_ASSERT("PBUF_POOL_BUFSIZE must be bigger than MEM_ALIGNMENT", + (PBUF_POOL_BUFSIZE_ALIGNED - LWIP_MEM_ALIGN_SIZE(offset)) > 0 ); + if (p == NULL) { + /* allocated head of pbuf chain (into p) */ + p = q; + } else { + /* make previous pbuf point to this pbuf */ + last->next = q; + } + last = q; + rem_len = (u16_t)(rem_len - qlen); + offset = 0; + } while (rem_len > 0); + break; + } + case PBUF_RAM: { + u16_t payload_len = (u16_t)(LWIP_MEM_ALIGN_SIZE(offset) + LWIP_MEM_ALIGN_SIZE(length)); + mem_size_t alloc_len = (mem_size_t)(LWIP_MEM_ALIGN_SIZE(SIZEOF_STRUCT_PBUF) + payload_len); + + /* bug #50040: Check for integer overflow when calculating alloc_len */ + if ((payload_len < LWIP_MEM_ALIGN_SIZE(length)) || + (alloc_len < LWIP_MEM_ALIGN_SIZE(length))) { + return NULL; + } + + /* If pbuf is to be allocated in RAM, allocate memory for it. */ + p = (struct pbuf *)mem_malloc(alloc_len); + if (p == NULL) { + return NULL; + } + pbuf_init_alloced_pbuf(p, LWIP_MEM_ALIGN((void *)((u8_t *)p + SIZEOF_STRUCT_PBUF + offset)), + length, length, type, 0); + LWIP_ASSERT("pbuf_alloc: pbuf->payload properly aligned", + ((mem_ptr_t)p->payload % MEM_ALIGNMENT) == 0); + break; + } + default: + LWIP_ASSERT("pbuf_alloc: erroneous type", 0); + return NULL; + } + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_alloc(length=%"U16_F") == %p\n", length, (void *)p)); + return p; +} + +/** + * @ingroup pbuf + * Allocates a pbuf for referenced data. + * Referenced data can be volatile (PBUF_REF) or long-lived (PBUF_ROM). + * + * The actual memory allocated for the pbuf is determined by the + * layer at which the pbuf is allocated and the requested size + * (from the size parameter). + * + * @param payload referenced payload + * @param length size of the pbuf's payload + * @param type this parameter decides how and where the pbuf + * should be allocated as follows: + * + * - PBUF_ROM: It is assumed that the memory used is really + * similar to ROM in that it is immutable and will not be + * changed. Memory which is dynamic should generally not + * be attached to PBUF_ROM pbufs. Use PBUF_REF instead. + * - PBUF_REF: It is assumed that the pbuf is only + * being used in a single thread. If the pbuf gets queued, + * then pbuf_take should be called to copy the buffer. + * + * @return the allocated pbuf. + */ +struct pbuf * +pbuf_alloc_reference(void *payload, u16_t length, pbuf_type type) +{ + struct pbuf *p; + LWIP_ASSERT("invalid pbuf_type", (type == PBUF_REF) || (type == PBUF_ROM)); + /* only allocate memory for the pbuf structure */ + p = (struct pbuf *)memp_malloc(MEMP_PBUF); + if (p == NULL) { + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("pbuf_alloc_reference: Could not allocate MEMP_PBUF for PBUF_%s.\n", + (type == PBUF_ROM) ? "ROM" : "REF")); + return NULL; + } + pbuf_init_alloced_pbuf(p, payload, length, length, type, 0); + return p; +} + + +#if LWIP_SUPPORT_CUSTOM_PBUF +/** + * @ingroup pbuf + * Initialize a custom pbuf (already allocated). + * Example of custom pbuf usage: @ref zerocopyrx + * + * @param l header size + * @param length size of the pbuf's payload + * @param type type of the pbuf (only used to treat the pbuf accordingly, as + * this function allocates no memory) + * @param p pointer to the custom pbuf to initialize (already allocated) + * @param payload_mem pointer to the buffer that is used for payload and headers, + * must be at least big enough to hold 'length' plus the header size, + * may be NULL if set later. + * ATTENTION: The caller is responsible for correct alignment of this buffer!! + * @param payload_mem_len the size of the 'payload_mem' buffer, must be at least + * big enough to hold 'length' plus the header size + */ +struct pbuf * +pbuf_alloced_custom(pbuf_layer l, u16_t length, pbuf_type type, struct pbuf_custom *p, + void *payload_mem, u16_t payload_mem_len) +{ + u16_t offset = (u16_t)l; + void *payload; + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_alloced_custom(length=%"U16_F")\n", length)); + + if (LWIP_MEM_ALIGN_SIZE(offset) + length > payload_mem_len) { + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_LEVEL_WARNING, ("pbuf_alloced_custom(length=%"U16_F") buffer too short\n", length)); + return NULL; + } + + if (payload_mem != NULL) { + payload = (u8_t *)payload_mem + LWIP_MEM_ALIGN_SIZE(offset); + } else { + payload = NULL; + } + pbuf_init_alloced_pbuf(&p->pbuf, payload, length, length, type, PBUF_FLAG_IS_CUSTOM); + return &p->pbuf; +} +#endif /* LWIP_SUPPORT_CUSTOM_PBUF */ + +/** + * @ingroup pbuf + * Shrink a pbuf chain to a desired length. + * + * @param p pbuf to shrink. + * @param new_len desired new length of pbuf chain + * + * Depending on the desired length, the first few pbufs in a chain might + * be skipped and left unchanged. The new last pbuf in the chain will be + * resized, and any remaining pbufs will be freed. + * + * @note If the pbuf is ROM/REF, only the ->tot_len and ->len fields are adjusted. + * @note May not be called on a packet queue. + * + * @note Despite its name, pbuf_realloc cannot grow the size of a pbuf (chain). + */ +void +pbuf_realloc(struct pbuf *p, u16_t new_len) +{ + struct pbuf *q; + u16_t rem_len; /* remaining length */ + u16_t shrink; + + LWIP_ASSERT("pbuf_realloc: p != NULL", p != NULL); + + /* desired length larger than current length? */ + if (new_len >= p->tot_len) { + /* enlarging not yet supported */ + return; + } + + /* the pbuf chain grows by (new_len - p->tot_len) bytes + * (which may be negative in case of shrinking) */ + shrink = (u16_t)(p->tot_len - new_len); + + /* first, step over any pbufs that should remain in the chain */ + rem_len = new_len; + q = p; + /* should this pbuf be kept? */ + while (rem_len > q->len) { + /* decrease remaining length by pbuf length */ + rem_len = (u16_t)(rem_len - q->len); + /* decrease total length indicator */ + q->tot_len = (u16_t)(q->tot_len - shrink); + /* proceed to next pbuf in chain */ + q = q->next; + LWIP_ASSERT("pbuf_realloc: q != NULL", q != NULL); + } + /* we have now reached the new last pbuf (in q) */ + /* rem_len == desired length for pbuf q */ + + /* shrink allocated memory for PBUF_RAM */ + /* (other types merely adjust their length fields */ + if (pbuf_match_allocsrc(q, PBUF_TYPE_ALLOC_SRC_MASK_STD_HEAP) && (rem_len != q->len) +#if LWIP_SUPPORT_CUSTOM_PBUF + && ((q->flags & PBUF_FLAG_IS_CUSTOM) == 0) +#endif /* LWIP_SUPPORT_CUSTOM_PBUF */ + ) { + /* reallocate and adjust the length of the pbuf that will be split */ + q = (struct pbuf *)mem_trim(q, (mem_size_t)(((u8_t *)q->payload - (u8_t *)q) + rem_len)); + LWIP_ASSERT("mem_trim returned q == NULL", q != NULL); + } + /* adjust length fields for new last pbuf */ + q->len = rem_len; + q->tot_len = q->len; + + /* any remaining pbufs in chain? */ + if (q->next != NULL) { + /* free remaining pbufs in chain */ + pbuf_free(q->next); + } + /* q is last packet in chain */ + q->next = NULL; + +} + +/** + * Adjusts the payload pointer to reveal headers in the payload. + * @see pbuf_add_header. + * + * @param p pbuf to change the header size. + * @param header_size_increment Number of bytes to increment header size. + * @param force Allow 'header_size_increment > 0' for PBUF_REF/PBUF_ROM types + * + * @return non-zero on failure, zero on success. + * + */ +static u8_t +pbuf_add_header_impl(struct pbuf *p, size_t header_size_increment, u8_t force) +{ + u16_t type_internal; + void *payload; + u16_t increment_magnitude; + + LWIP_ASSERT("p != NULL", p != NULL); + if ((p == NULL) || (header_size_increment > 0xFFFF)) { + return 1; + } + if (header_size_increment == 0) { + return 0; + } + + increment_magnitude = (u16_t)header_size_increment; + /* Do not allow tot_len to wrap as a result. */ + if ((u16_t)(increment_magnitude + p->tot_len) < increment_magnitude) { + return 1; + } + + type_internal = p->type_internal; + + /* pbuf types containing payloads? */ + if (type_internal & PBUF_TYPE_FLAG_STRUCT_DATA_CONTIGUOUS) { + /* set new payload pointer */ + payload = (u8_t *)p->payload - header_size_increment; + /* boundary check fails? */ + if ((u8_t *)payload < (u8_t *)p + SIZEOF_STRUCT_PBUF) { + LWIP_DEBUGF( PBUF_DEBUG | LWIP_DBG_TRACE, + ("pbuf_add_header: failed as %p < %p (not enough space for new header size)\n", + (void *)payload, (void *)((u8_t *)p + SIZEOF_STRUCT_PBUF))); + /* bail out unsuccessfully */ + return 1; + } + /* pbuf types referring to external payloads? */ + } else { + /* hide a header in the payload? */ + if (force) { + payload = (u8_t *)p->payload - header_size_increment; + } else { + /* cannot expand payload to front (yet!) + * bail out unsuccessfully */ + return 1; + } + } + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_add_header: old %p new %p (%"U16_F")\n", + (void *)p->payload, (void *)payload, increment_magnitude)); + + /* modify pbuf fields */ + p->payload = payload; + p->len = (u16_t)(p->len + increment_magnitude); + p->tot_len = (u16_t)(p->tot_len + increment_magnitude); + + + return 0; +} + +/** + * Adjusts the payload pointer to reveal headers in the payload. + * + * Adjusts the ->payload pointer so that space for a header + * appears in the pbuf payload. + * + * The ->payload, ->tot_len and ->len fields are adjusted. + * + * @param p pbuf to change the header size. + * @param header_size_increment Number of bytes to increment header size which + * increases the size of the pbuf. New space is on the front. + * If header_size_increment is 0, this function does nothing and returns successful. + * + * PBUF_ROM and PBUF_REF type buffers cannot have their sizes increased, so + * the call will fail. A check is made that the increase in header size does + * not move the payload pointer in front of the start of the buffer. + * + * @return non-zero on failure, zero on success. + * + */ +u8_t +pbuf_add_header(struct pbuf *p, size_t header_size_increment) +{ + return pbuf_add_header_impl(p, header_size_increment, 0); +} + +/** + * Same as @ref pbuf_add_header but does not check if 'header_size > 0' is allowed. + * This is used internally only, to allow PBUF_REF for RX. + */ +u8_t +pbuf_add_header_force(struct pbuf *p, size_t header_size_increment) +{ + return pbuf_add_header_impl(p, header_size_increment, 1); +} + +/** + * Adjusts the payload pointer to hide headers in the payload. + * + * Adjusts the ->payload pointer so that space for a header + * disappears in the pbuf payload. + * + * The ->payload, ->tot_len and ->len fields are adjusted. + * + * @param p pbuf to change the header size. + * @param header_size_decrement Number of bytes to decrement header size which + * decreases the size of the pbuf. + * If header_size_decrement is 0, this function does nothing and returns successful. + * @return non-zero on failure, zero on success. + * + */ +u8_t +pbuf_remove_header(struct pbuf *p, size_t header_size_decrement) +{ + void *payload; + u16_t increment_magnitude; + + LWIP_ASSERT("p != NULL", p != NULL); + if ((p == NULL) || (header_size_decrement > 0xFFFF)) { + return 1; + } + if (header_size_decrement == 0) { + return 0; + } + + increment_magnitude = (u16_t)header_size_decrement; + /* Check that we aren't going to move off the end of the pbuf */ + LWIP_ERROR("increment_magnitude <= p->len", (increment_magnitude <= p->len), return 1;); + + /* remember current payload pointer */ + payload = p->payload; + LWIP_UNUSED_ARG(payload); /* only used in LWIP_DEBUGF below */ + + /* increase payload pointer (guarded by length check above) */ + p->payload = (u8_t *)p->payload + header_size_decrement; + /* modify pbuf length fields */ + p->len = (u16_t)(p->len - increment_magnitude); + p->tot_len = (u16_t)(p->tot_len - increment_magnitude); + + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_remove_header: old %p new %p (%"U16_F")\n", + (void *)payload, (void *)p->payload, increment_magnitude)); + + return 0; +} + +static u8_t +pbuf_header_impl(struct pbuf *p, s16_t header_size_increment, u8_t force) +{ + if (header_size_increment < 0) { + return pbuf_remove_header(p, (size_t) - header_size_increment); + } else { + return pbuf_add_header_impl(p, (size_t)header_size_increment, force); + } +} + +/** + * Adjusts the payload pointer to hide or reveal headers in the payload. + * + * Adjusts the ->payload pointer so that space for a header + * (dis)appears in the pbuf payload. + * + * The ->payload, ->tot_len and ->len fields are adjusted. + * + * @param p pbuf to change the header size. + * @param header_size_increment Number of bytes to increment header size which + * increases the size of the pbuf. New space is on the front. + * (Using a negative value decreases the header size.) + * If header_size_increment is 0, this function does nothing and returns successful. + * + * PBUF_ROM and PBUF_REF type buffers cannot have their sizes increased, so + * the call will fail. A check is made that the increase in header size does + * not move the payload pointer in front of the start of the buffer. + * @return non-zero on failure, zero on success. + * + */ +u8_t +pbuf_header(struct pbuf *p, s16_t header_size_increment) +{ + return pbuf_header_impl(p, header_size_increment, 0); +} + +/** + * Same as pbuf_header but does not check if 'header_size > 0' is allowed. + * This is used internally only, to allow PBUF_REF for RX. + */ +u8_t +pbuf_header_force(struct pbuf *p, s16_t header_size_increment) +{ + return pbuf_header_impl(p, header_size_increment, 1); +} + +/** Similar to pbuf_header(-size) but de-refs header pbufs for (size >= p->len) + * + * @param q pbufs to operate on + * @param size The number of bytes to remove from the beginning of the pbuf list. + * While size >= p->len, pbufs are freed. + * ATTENTION: this is the opposite direction as @ref pbuf_header, but + * takes an u16_t not s16_t! + * @return the new head pbuf + */ +struct pbuf * +pbuf_free_header(struct pbuf *q, u16_t size) +{ + struct pbuf *p = q; + u16_t free_left = size; + while (free_left && p) { + if (free_left >= p->len) { + struct pbuf *f = p; + free_left = (u16_t)(free_left - p->len); + p = p->next; + f->next = 0; + pbuf_free(f); + } else { + pbuf_remove_header(p, free_left); + free_left = 0; + } + } + return p; +} + +/** + * @ingroup pbuf + * Dereference a pbuf chain or queue and deallocate any no-longer-used + * pbufs at the head of this chain or queue. + * + * Decrements the pbuf reference count. If it reaches zero, the pbuf is + * deallocated. + * + * For a pbuf chain, this is repeated for each pbuf in the chain, + * up to the first pbuf which has a non-zero reference count after + * decrementing. So, when all reference counts are one, the whole + * chain is free'd. + * + * @param p The pbuf (chain) to be dereferenced. + * + * @return the number of pbufs that were de-allocated + * from the head of the chain. + * + * @note MUST NOT be called on a packet queue (Not verified to work yet). + * @note the reference counter of a pbuf equals the number of pointers + * that refer to the pbuf (or into the pbuf). + * + * @internal examples: + * + * Assuming existing chains a->b->c with the following reference + * counts, calling pbuf_free(a) results in: + * + * 1->2->3 becomes ...1->3 + * 3->3->3 becomes 2->3->3 + * 1->1->2 becomes ......1 + * 2->1->1 becomes 1->1->1 + * 1->1->1 becomes ....... + * + */ +u8_t +pbuf_free(struct pbuf *p) +{ + u8_t alloc_src; + struct pbuf *q; + u8_t count; + + if (p == NULL) { + LWIP_ASSERT("p != NULL", p != NULL); + /* if assertions are disabled, proceed with debug output */ + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("pbuf_free(p == NULL) was called.\n")); + return 0; + } + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_free(%p)\n", (void *)p)); + + PERF_START; + + count = 0; + /* de-allocate all consecutive pbufs from the head of the chain that + * obtain a zero reference count after decrementing*/ + while (p != NULL) { + LWIP_PBUF_REF_T ref; + SYS_ARCH_DECL_PROTECT(old_level); + /* Since decrementing ref cannot be guaranteed to be a single machine operation + * we must protect it. We put the new ref into a local variable to prevent + * further protection. */ + SYS_ARCH_PROTECT(old_level); + /* all pbufs in a chain are referenced at least once */ + LWIP_ASSERT("pbuf_free: p->ref > 0", p->ref > 0); + /* decrease reference count (number of pointers to pbuf) */ + ref = --(p->ref); + SYS_ARCH_UNPROTECT(old_level); + /* this pbuf is no longer referenced to? */ + if (ref == 0) { + /* remember next pbuf in chain for next iteration */ + q = p->next; + LWIP_DEBUGF( PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_free: deallocating %p\n", (void *)p)); + alloc_src = pbuf_get_allocsrc(p); +#if LWIP_SUPPORT_CUSTOM_PBUF + /* is this a custom pbuf? */ + if ((p->flags & PBUF_FLAG_IS_CUSTOM) != 0) { + struct pbuf_custom *pc = (struct pbuf_custom *)p; + LWIP_ASSERT("pc->custom_free_function != NULL", pc->custom_free_function != NULL); + pc->custom_free_function(p); + } else +#endif /* LWIP_SUPPORT_CUSTOM_PBUF */ + { + /* is this a pbuf from the pool? */ + if (alloc_src == PBUF_TYPE_ALLOC_SRC_MASK_STD_MEMP_PBUF_POOL) { + memp_free(MEMP_PBUF_POOL, p); + /* is this a ROM or RAM referencing pbuf? */ + } else if (alloc_src == PBUF_TYPE_ALLOC_SRC_MASK_STD_MEMP_PBUF) { + memp_free(MEMP_PBUF, p); + /* type == PBUF_RAM */ + } else if (alloc_src == PBUF_TYPE_ALLOC_SRC_MASK_STD_HEAP) { + mem_free(p); + } else { + /* @todo: support freeing other types */ + LWIP_ASSERT("invalid pbuf type", 0); + } + } + count++; + /* proceed to next pbuf */ + p = q; + /* p->ref > 0, this pbuf is still referenced to */ + /* (and so the remaining pbufs in chain as well) */ + } else { + LWIP_DEBUGF( PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_free: %p has ref %"U16_F", ending here.\n", (void *)p, (u16_t)ref)); + /* stop walking through the chain */ + p = NULL; + } + } + PERF_STOP("pbuf_free"); + /* return number of de-allocated pbufs */ + return count; +} + +/** + * Count number of pbufs in a chain + * + * @param p first pbuf of chain + * @return the number of pbufs in a chain + */ +u16_t +pbuf_clen(const struct pbuf *p) +{ + u16_t len; + + len = 0; + while (p != NULL) { + ++len; + p = p->next; + } + return len; +} + +/** + * @ingroup pbuf + * Increment the reference count of the pbuf. + * + * @param p pbuf to increase reference counter of + * + */ +void +pbuf_ref(struct pbuf *p) +{ + /* pbuf given? */ + if (p != NULL) { + SYS_ARCH_SET(p->ref, (LWIP_PBUF_REF_T)(p->ref + 1)); + LWIP_ASSERT("pbuf ref overflow", p->ref > 0); + } +} + +/** + * @ingroup pbuf + * Concatenate two pbufs (each may be a pbuf chain) and take over + * the caller's reference of the tail pbuf. + * + * @note The caller MAY NOT reference the tail pbuf afterwards. + * Use pbuf_chain() for that purpose. + * + * This function explicitly does not check for tot_len overflow to prevent + * failing to queue too long pbufs. This can produce invalid pbufs, so + * handle with care! + * + * @see pbuf_chain() + */ +void +pbuf_cat(struct pbuf *h, struct pbuf *t) +{ + struct pbuf *p; + + LWIP_ERROR("(h != NULL) && (t != NULL) (programmer violates API)", + ((h != NULL) && (t != NULL)), return;); + + /* proceed to last pbuf of chain */ + for (p = h; p->next != NULL; p = p->next) { + /* add total length of second chain to all totals of first chain */ + p->tot_len = (u16_t)(p->tot_len + t->tot_len); + } + /* { p is last pbuf of first h chain, p->next == NULL } */ + LWIP_ASSERT("p->tot_len == p->len (of last pbuf in chain)", p->tot_len == p->len); + LWIP_ASSERT("p->next == NULL", p->next == NULL); + /* add total length of second chain to last pbuf total of first chain */ + p->tot_len = (u16_t)(p->tot_len + t->tot_len); + /* chain last pbuf of head (p) with first of tail (t) */ + p->next = t; + /* p->next now references t, but the caller will drop its reference to t, + * so netto there is no change to the reference count of t. + */ +} + +/** + * @ingroup pbuf + * Chain two pbufs (or pbuf chains) together. + * + * The caller MUST call pbuf_free(t) once it has stopped + * using it. Use pbuf_cat() instead if you no longer use t. + * + * @param h head pbuf (chain) + * @param t tail pbuf (chain) + * @note The pbufs MUST belong to the same packet. + * @note MAY NOT be called on a packet queue. + * + * The ->tot_len fields of all pbufs of the head chain are adjusted. + * The ->next field of the last pbuf of the head chain is adjusted. + * The ->ref field of the first pbuf of the tail chain is adjusted. + * + */ +void +pbuf_chain(struct pbuf *h, struct pbuf *t) +{ + pbuf_cat(h, t); + /* t is now referenced by h */ + pbuf_ref(t); + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_chain: %p references %p\n", (void *)h, (void *)t)); +} + +/** + * Dechains the first pbuf from its succeeding pbufs in the chain. + * + * Makes p->tot_len field equal to p->len. + * @param p pbuf to dechain + * @return remainder of the pbuf chain, or NULL if it was de-allocated. + * @note May not be called on a packet queue. + */ +struct pbuf * +pbuf_dechain(struct pbuf *p) +{ + struct pbuf *q; + u8_t tail_gone = 1; + /* tail */ + q = p->next; + /* pbuf has successor in chain? */ + if (q != NULL) { + /* assert tot_len invariant: (p->tot_len == p->len + (p->next? p->next->tot_len: 0) */ + LWIP_ASSERT("p->tot_len == p->len + q->tot_len", q->tot_len == p->tot_len - p->len); + /* enforce invariant if assertion is disabled */ + q->tot_len = (u16_t)(p->tot_len - p->len); + /* decouple pbuf from remainder */ + p->next = NULL; + /* total length of pbuf p is its own length only */ + p->tot_len = p->len; + /* q is no longer referenced by p, free it */ + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_dechain: unreferencing %p\n", (void *)q)); + tail_gone = pbuf_free(q); + if (tail_gone > 0) { + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, + ("pbuf_dechain: deallocated %p (as it is no longer referenced)\n", (void *)q)); + } + /* return remaining tail or NULL if deallocated */ + } + /* assert tot_len invariant: (p->tot_len == p->len + (p->next? p->next->tot_len: 0) */ + LWIP_ASSERT("p->tot_len == p->len", p->tot_len == p->len); + return ((tail_gone > 0) ? NULL : q); +} + +/** + * @ingroup pbuf + * Create PBUF_RAM copies of pbufs. + * + * Used to queue packets on behalf of the lwIP stack, such as + * ARP based queueing. + * + * @note You MUST explicitly use p = pbuf_take(p); + * + * @note Only one packet is copied, no packet queue! + * + * @param p_to pbuf destination of the copy + * @param p_from pbuf source of the copy + * + * @return ERR_OK if pbuf was copied + * ERR_ARG if one of the pbufs is NULL or p_to is not big + * enough to hold p_from + */ +err_t +pbuf_copy(struct pbuf *p_to, const struct pbuf *p_from) +{ + size_t offset_to = 0, offset_from = 0, len; + + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_copy(%p, %p)\n", + (const void *)p_to, (const void *)p_from)); + + /* is the target big enough to hold the source? */ + LWIP_ERROR("pbuf_copy: target not big enough to hold source", ((p_to != NULL) && + (p_from != NULL) && (p_to->tot_len >= p_from->tot_len)), return ERR_ARG;); + + /* iterate through pbuf chain */ + do { + /* copy one part of the original chain */ + if ((p_to->len - offset_to) >= (p_from->len - offset_from)) { + /* complete current p_from fits into current p_to */ + len = p_from->len - offset_from; + } else { + /* current p_from does not fit into current p_to */ + len = p_to->len - offset_to; + } + MEMCPY((u8_t *)p_to->payload + offset_to, (u8_t *)p_from->payload + offset_from, len); + offset_to += len; + offset_from += len; + LWIP_ASSERT("offset_to <= p_to->len", offset_to <= p_to->len); + LWIP_ASSERT("offset_from <= p_from->len", offset_from <= p_from->len); + if (offset_from >= p_from->len) { + /* on to next p_from (if any) */ + offset_from = 0; + p_from = p_from->next; + } + if (offset_to == p_to->len) { + /* on to next p_to (if any) */ + offset_to = 0; + p_to = p_to->next; + LWIP_ERROR("p_to != NULL", (p_to != NULL) || (p_from == NULL), return ERR_ARG;); + } + + if ((p_from != NULL) && (p_from->len == p_from->tot_len)) { + /* don't copy more than one packet! */ + LWIP_ERROR("pbuf_copy() does not allow packet queues!", + (p_from->next == NULL), return ERR_VAL;); + } + if ((p_to != NULL) && (p_to->len == p_to->tot_len)) { + /* don't copy more than one packet! */ + LWIP_ERROR("pbuf_copy() does not allow packet queues!", + (p_to->next == NULL), return ERR_VAL;); + } + } while (p_from); + LWIP_DEBUGF(PBUF_DEBUG | LWIP_DBG_TRACE, ("pbuf_copy: end of chain reached.\n")); + return ERR_OK; +} + +/** + * @ingroup pbuf + * Copy (part of) the contents of a packet buffer + * to an application supplied buffer. + * + * @param buf the pbuf from which to copy data + * @param dataptr the application supplied buffer + * @param len length of data to copy (dataptr must be big enough). No more + * than buf->tot_len will be copied, irrespective of len + * @param offset offset into the packet buffer from where to begin copying len bytes + * @return the number of bytes copied, or 0 on failure + */ +u16_t +pbuf_copy_partial(const struct pbuf *buf, void *dataptr, u16_t len, u16_t offset) +{ + const struct pbuf *p; + u16_t left = 0; + u16_t buf_copy_len; + u16_t copied_total = 0; + + LWIP_ERROR("pbuf_copy_partial: invalid buf", (buf != NULL), return 0;); + LWIP_ERROR("pbuf_copy_partial: invalid dataptr", (dataptr != NULL), return 0;); + + /* Note some systems use byte copy if dataptr or one of the pbuf payload pointers are unaligned. */ + for (p = buf; len != 0 && p != NULL; p = p->next) { + if ((offset != 0) && (offset >= p->len)) { + /* don't copy from this buffer -> on to the next */ + offset = (u16_t)(offset - p->len); + } else { + /* copy from this buffer. maybe only partially. */ + buf_copy_len = (u16_t)(p->len - offset); + if (buf_copy_len > len) { + buf_copy_len = len; + } + /* copy the necessary parts of the buffer */ + MEMCPY(&((char *)dataptr)[left], &((char *)p->payload)[offset], buf_copy_len); + copied_total = (u16_t)(copied_total + buf_copy_len); + left = (u16_t)(left + buf_copy_len); + len = (u16_t)(len - buf_copy_len); + offset = 0; + } + } + return copied_total; +} + +/** + * @ingroup pbuf + * Get part of a pbuf's payload as contiguous memory. The returned memory is + * either a pointer into the pbuf's payload or, if split over multiple pbufs, + * a copy into the user-supplied buffer. + * + * @param p the pbuf from which to copy data + * @param buffer the application supplied buffer + * @param bufsize size of the application supplied buffer + * @param len length of data to copy (dataptr must be big enough). No more + * than buf->tot_len will be copied, irrespective of len + * @param offset offset into the packet buffer from where to begin copying len bytes + * @return the number of bytes copied, or 0 on failure + */ +void * +pbuf_get_contiguous(const struct pbuf *p, void *buffer, size_t bufsize, u16_t len, u16_t offset) +{ + const struct pbuf *q; + u16_t out_offset; + + LWIP_ERROR("pbuf_get_contiguous: invalid buf", (p != NULL), return NULL;); + LWIP_ERROR("pbuf_get_contiguous: invalid dataptr", (buffer != NULL), return NULL;); + LWIP_ERROR("pbuf_get_contiguous: invalid dataptr", (bufsize >= len), return NULL;); + + q = pbuf_skip_const(p, offset, &out_offset); + if (q != NULL) { + if (q->len >= (out_offset + len)) { + /* all data in this pbuf, return zero-copy */ + return (u8_t *)q->payload + out_offset; + } + /* need to copy */ + if (pbuf_copy_partial(q, buffer, len, out_offset) != len) { + /* copying failed: pbuf is too short */ + return NULL; + } + return buffer; + } + /* pbuf is too short (offset does not fit in) */ + return NULL; +} + +#if LWIP_TCP && TCP_QUEUE_OOSEQ && LWIP_WND_SCALE +/** + * This method modifies a 'pbuf chain', so that its total length is + * smaller than 64K. The remainder of the original pbuf chain is stored + * in *rest. + * This function never creates new pbufs, but splits an existing chain + * in two parts. The tot_len of the modified packet queue will likely be + * smaller than 64K. + * 'packet queues' are not supported by this function. + * + * @param p the pbuf queue to be split + * @param rest pointer to store the remainder (after the first 64K) + */ +void pbuf_split_64k(struct pbuf *p, struct pbuf **rest) +{ + *rest = NULL; + if ((p != NULL) && (p->next != NULL)) { + u16_t tot_len_front = p->len; + struct pbuf *i = p; + struct pbuf *r = p->next; + + /* continue until the total length (summed up as u16_t) overflows */ + while ((r != NULL) && ((u16_t)(tot_len_front + r->len) >= tot_len_front)) { + tot_len_front = (u16_t)(tot_len_front + r->len); + i = r; + r = r->next; + } + /* i now points to last packet of the first segment. Set next + pointer to NULL */ + i->next = NULL; + + if (r != NULL) { + /* Update the tot_len field in the first part */ + for (i = p; i != NULL; i = i->next) { + i->tot_len = (u16_t)(i->tot_len - r->tot_len); + LWIP_ASSERT("tot_len/len mismatch in last pbuf", + (i->next != NULL) || (i->tot_len == i->len)); + } + if (p->flags & PBUF_FLAG_TCP_FIN) { + r->flags |= PBUF_FLAG_TCP_FIN; + } + + /* tot_len field in rest does not need modifications */ + /* reference counters do not need modifications */ + *rest = r; + } + } +} +#endif /* LWIP_TCP && TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + +/* Actual implementation of pbuf_skip() but returning const pointer... */ +static const struct pbuf * +pbuf_skip_const(const struct pbuf *in, u16_t in_offset, u16_t *out_offset) +{ + u16_t offset_left = in_offset; + const struct pbuf *q = in; + + /* get the correct pbuf */ + while ((q != NULL) && (q->len <= offset_left)) { + offset_left = (u16_t)(offset_left - q->len); + q = q->next; + } + if (out_offset != NULL) { + *out_offset = offset_left; + } + return q; +} + +/** + * @ingroup pbuf + * Skip a number of bytes at the start of a pbuf + * + * @param in input pbuf + * @param in_offset offset to skip + * @param out_offset resulting offset in the returned pbuf + * @return the pbuf in the queue where the offset is + */ +struct pbuf * +pbuf_skip(struct pbuf *in, u16_t in_offset, u16_t *out_offset) +{ + const struct pbuf *out = pbuf_skip_const(in, in_offset, out_offset); + return LWIP_CONST_CAST(struct pbuf *, out); +} + +/** + * @ingroup pbuf + * Copy application supplied data into a pbuf. + * This function can only be used to copy the equivalent of buf->tot_len data. + * + * @param buf pbuf to fill with data + * @param dataptr application supplied data buffer + * @param len length of the application supplied data buffer + * + * @return ERR_OK if successful, ERR_MEM if the pbuf is not big enough + */ +err_t +pbuf_take(struct pbuf *buf, const void *dataptr, u16_t len) +{ + struct pbuf *p; + size_t buf_copy_len; + size_t total_copy_len = len; + size_t copied_total = 0; + + LWIP_ERROR("pbuf_take: invalid buf", (buf != NULL), return ERR_ARG;); + LWIP_ERROR("pbuf_take: invalid dataptr", (dataptr != NULL), return ERR_ARG;); + LWIP_ERROR("pbuf_take: buf not large enough", (buf->tot_len >= len), return ERR_MEM;); + + if ((buf == NULL) || (dataptr == NULL) || (buf->tot_len < len)) { + return ERR_ARG; + } + + /* Note some systems use byte copy if dataptr or one of the pbuf payload pointers are unaligned. */ + for (p = buf; total_copy_len != 0; p = p->next) { + LWIP_ASSERT("pbuf_take: invalid pbuf", p != NULL); + buf_copy_len = total_copy_len; + if (buf_copy_len > p->len) { + /* this pbuf cannot hold all remaining data */ + buf_copy_len = p->len; + } + /* copy the necessary parts of the buffer */ + MEMCPY(p->payload, &((const char *)dataptr)[copied_total], buf_copy_len); + total_copy_len -= buf_copy_len; + copied_total += buf_copy_len; + } + LWIP_ASSERT("did not copy all data", total_copy_len == 0 && copied_total == len); + return ERR_OK; +} + +/** + * @ingroup pbuf + * Same as pbuf_take() but puts data at an offset + * + * @param buf pbuf to fill with data + * @param dataptr application supplied data buffer + * @param len length of the application supplied data buffer + * @param offset offset in pbuf where to copy dataptr to + * + * @return ERR_OK if successful, ERR_MEM if the pbuf is not big enough + */ +err_t +pbuf_take_at(struct pbuf *buf, const void *dataptr, u16_t len, u16_t offset) +{ + u16_t target_offset; + struct pbuf *q = pbuf_skip(buf, offset, &target_offset); + + /* return requested data if pbuf is OK */ + if ((q != NULL) && (q->tot_len >= target_offset + len)) { + u16_t remaining_len = len; + const u8_t *src_ptr = (const u8_t *)dataptr; + /* copy the part that goes into the first pbuf */ + u16_t first_copy_len; + LWIP_ASSERT("check pbuf_skip result", target_offset < q->len); + first_copy_len = (u16_t)LWIP_MIN(q->len - target_offset, len); + MEMCPY(((u8_t *)q->payload) + target_offset, dataptr, first_copy_len); + remaining_len = (u16_t)(remaining_len - first_copy_len); + src_ptr += first_copy_len; + if (remaining_len > 0) { + return pbuf_take(q->next, src_ptr, remaining_len); + } + return ERR_OK; + } + return ERR_MEM; +} + +/** + * @ingroup pbuf + * Creates a single pbuf out of a queue of pbufs. + * + * @remark: Either the source pbuf 'p' is freed by this function or the original + * pbuf 'p' is returned, therefore the caller has to check the result! + * + * @param p the source pbuf + * @param layer pbuf_layer of the new pbuf + * + * @return a new, single pbuf (p->next is NULL) + * or the old pbuf if allocation fails + */ +struct pbuf * +pbuf_coalesce(struct pbuf *p, pbuf_layer layer) +{ + struct pbuf *q; + if (p->next == NULL) { + return p; + } + q = pbuf_clone(layer, PBUF_RAM, p); + if (q == NULL) { + /* @todo: what do we do now? */ + return p; + } + pbuf_free(p); + return q; +} + +/** + * @ingroup pbuf + * Allocates a new pbuf of same length (via pbuf_alloc()) and copies the source + * pbuf into this new pbuf (using pbuf_copy()). + * + * @param layer pbuf_layer of the new pbuf + * @param type this parameter decides how and where the pbuf should be allocated + * (@see pbuf_alloc()) + * @param p the source pbuf + * + * @return a new pbuf or NULL if allocation fails + */ +struct pbuf * +pbuf_clone(pbuf_layer layer, pbuf_type type, struct pbuf *p) +{ + struct pbuf *q; + err_t err; + q = pbuf_alloc(layer, p->tot_len, type); + if (q == NULL) { + return NULL; + } + err = pbuf_copy(q, p); + LWIP_UNUSED_ARG(err); /* in case of LWIP_NOASSERT */ + LWIP_ASSERT("pbuf_copy failed", err == ERR_OK); + return q; +} + +#if LWIP_CHECKSUM_ON_COPY +/** + * Copies data into a single pbuf (*not* into a pbuf queue!) and updates + * the checksum while copying + * + * @param p the pbuf to copy data into + * @param start_offset offset of p->payload where to copy the data to + * @param dataptr data to copy into the pbuf + * @param len length of data to copy into the pbuf + * @param chksum pointer to the checksum which is updated + * @return ERR_OK if successful, another error if the data does not fit + * within the (first) pbuf (no pbuf queues!) + */ +err_t +pbuf_fill_chksum(struct pbuf *p, u16_t start_offset, const void *dataptr, + u16_t len, u16_t *chksum) +{ + u32_t acc; + u16_t copy_chksum; + char *dst_ptr; + LWIP_ASSERT("p != NULL", p != NULL); + LWIP_ASSERT("dataptr != NULL", dataptr != NULL); + LWIP_ASSERT("chksum != NULL", chksum != NULL); + LWIP_ASSERT("len != 0", len != 0); + + if ((start_offset >= p->len) || (start_offset + len > p->len)) { + return ERR_ARG; + } + + dst_ptr = ((char *)p->payload) + start_offset; + copy_chksum = LWIP_CHKSUM_COPY(dst_ptr, dataptr, len); + if ((start_offset & 1) != 0) { + copy_chksum = SWAP_BYTES_IN_WORD(copy_chksum); + } + acc = *chksum; + acc += copy_chksum; + *chksum = FOLD_U32T(acc); + return ERR_OK; +} +#endif /* LWIP_CHECKSUM_ON_COPY */ + +/** + * @ingroup pbuf + * Get one byte from the specified position in a pbuf + * WARNING: returns zero for offset >= p->tot_len + * + * @param p pbuf to parse + * @param offset offset into p of the byte to return + * @return byte at an offset into p OR ZERO IF 'offset' >= p->tot_len + */ +u8_t +pbuf_get_at(const struct pbuf *p, u16_t offset) +{ + int ret = pbuf_try_get_at(p, offset); + if (ret >= 0) { + return (u8_t)ret; + } + return 0; +} + +/** + * @ingroup pbuf + * Get one byte from the specified position in a pbuf + * + * @param p pbuf to parse + * @param offset offset into p of the byte to return + * @return byte at an offset into p [0..0xFF] OR negative if 'offset' >= p->tot_len + */ +int +pbuf_try_get_at(const struct pbuf *p, u16_t offset) +{ + u16_t q_idx; + const struct pbuf *q = pbuf_skip_const(p, offset, &q_idx); + + /* return requested data if pbuf is OK */ + if ((q != NULL) && (q->len > q_idx)) { + return ((u8_t *)q->payload)[q_idx]; + } + return -1; +} + +/** + * @ingroup pbuf + * Put one byte to the specified position in a pbuf + * WARNING: silently ignores offset >= p->tot_len + * + * @param p pbuf to fill + * @param offset offset into p of the byte to write + * @param data byte to write at an offset into p + */ +void +pbuf_put_at(struct pbuf *p, u16_t offset, u8_t data) +{ + u16_t q_idx; + struct pbuf *q = pbuf_skip(p, offset, &q_idx); + + /* write requested data if pbuf is OK */ + if ((q != NULL) && (q->len > q_idx)) { + ((u8_t *)q->payload)[q_idx] = data; + } +} + +/** + * @ingroup pbuf + * Compare pbuf contents at specified offset with memory s2, both of length n + * + * @param p pbuf to compare + * @param offset offset into p at which to start comparing + * @param s2 buffer to compare + * @param n length of buffer to compare + * @return zero if equal, nonzero otherwise + * (0xffff if p is too short, diffoffset+1 otherwise) + */ +u16_t +pbuf_memcmp(const struct pbuf *p, u16_t offset, const void *s2, u16_t n) +{ + u16_t start = offset; + const struct pbuf *q = p; + u16_t i; + + /* pbuf long enough to perform check? */ + if (p->tot_len < (offset + n)) { + return 0xffff; + } + + /* get the correct pbuf from chain. We know it succeeds because of p->tot_len check above. */ + while ((q != NULL) && (q->len <= start)) { + start = (u16_t)(start - q->len); + q = q->next; + } + + /* return requested data if pbuf is OK */ + for (i = 0; i < n; i++) { + /* We know pbuf_get_at() succeeds because of p->tot_len check above. */ + u8_t a = pbuf_get_at(q, (u16_t)(start + i)); + u8_t b = ((const u8_t *)s2)[i]; + if (a != b) { + return (u16_t)LWIP_MIN(i + 1, 0xFFFF); + } + } + return 0; +} + +/** + * @ingroup pbuf + * Find occurrence of mem (with length mem_len) in pbuf p, starting at offset + * start_offset. + * + * @param p pbuf to search, maximum length is 0xFFFE since 0xFFFF is used as + * return value 'not found' + * @param mem search for the contents of this buffer + * @param mem_len length of 'mem' + * @param start_offset offset into p at which to start searching + * @return 0xFFFF if substr was not found in p or the index where it was found + */ +u16_t +pbuf_memfind(const struct pbuf *p, const void *mem, u16_t mem_len, u16_t start_offset) +{ + u16_t i; + u16_t max_cmp_start = (u16_t)(p->tot_len - mem_len); + if (p->tot_len >= mem_len + start_offset) { + for (i = start_offset; i <= max_cmp_start; i++) { + u16_t plus = pbuf_memcmp(p, i, mem, mem_len); + if (plus == 0) { + return i; + } + } + } + return 0xFFFF; +} + +/** + * Find occurrence of substr with length substr_len in pbuf p, start at offset + * start_offset + * WARNING: in contrast to strstr(), this one does not stop at the first \0 in + * the pbuf/source string! + * + * @param p pbuf to search, maximum length is 0xFFFE since 0xFFFF is used as + * return value 'not found' + * @param substr string to search for in p, maximum length is 0xFFFE + * @return 0xFFFF if substr was not found in p or the index where it was found + */ +u16_t +pbuf_strstr(const struct pbuf *p, const char *substr) +{ + size_t substr_len; + if ((substr == NULL) || (substr[0] == 0) || (p->tot_len == 0xFFFF)) { + return 0xFFFF; + } + substr_len = strlen(substr); + if (substr_len >= 0xFFFF) { + return 0xFFFF; + } + return pbuf_memfind(p, substr, (u16_t)substr_len, 0); +} diff --git a/Other/tun2socks/core/c/core/raw.c b/Other/tun2socks/core/c/core/raw.c new file mode 100644 index 0000000..3b34544 --- /dev/null +++ b/Other/tun2socks/core/c/core/raw.c @@ -0,0 +1,671 @@ +/** + * @file + * Implementation of raw protocol PCBs for low-level handling of + * different types of protocols besides (or overriding) those + * already available in lwIP.\n + * See also @ref raw_raw + * + * @defgroup raw_raw RAW + * @ingroup callbackstyle_api + * Implementation of raw protocol PCBs for low-level handling of + * different types of protocols besides (or overriding) those + * already available in lwIP.\n + * @see @ref api + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#if LWIP_RAW /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/def.h" +#include "lwip/memp.h" +#include "lwip/ip_addr.h" +#include "lwip/netif.h" +#include "lwip/raw.h" +#include "lwip/priv/raw_priv.h" +#include "lwip/stats.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/inet_chksum.h" + +#include + +/** The list of RAW PCBs */ +static struct raw_pcb *raw_pcbs; + +static u8_t +raw_input_local_match(struct raw_pcb *pcb, u8_t broadcast) +{ + LWIP_UNUSED_ARG(broadcast); /* in IPv6 only case */ + + /* check if PCB is bound to specific netif */ + if ((pcb->netif_idx != NETIF_NO_INDEX) && + (pcb->netif_idx != netif_get_index(ip_data.current_input_netif))) { + return 0; + } + +#if LWIP_IPV4 && LWIP_IPV6 + /* Dual-stack: PCBs listening to any IP type also listen to any IP address */ + if (IP_IS_ANY_TYPE_VAL(pcb->local_ip)) { +#if IP_SOF_BROADCAST_RECV + if ((broadcast != 0) && !ip_get_option(pcb, SOF_BROADCAST)) { + return 0; + } +#endif /* IP_SOF_BROADCAST_RECV */ + return 1; + } +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + + /* Only need to check PCB if incoming IP version matches PCB IP version */ + if (IP_ADDR_PCB_VERSION_MATCH_EXACT(pcb, ip_current_dest_addr())) { +#if LWIP_IPV4 + /* Special case: IPv4 broadcast: receive all broadcasts + * Note: broadcast variable can only be 1 if it is an IPv4 broadcast */ + if (broadcast != 0) { +#if IP_SOF_BROADCAST_RECV + if (ip_get_option(pcb, SOF_BROADCAST)) +#endif /* IP_SOF_BROADCAST_RECV */ + { + if (ip4_addr_isany(ip_2_ip4(&pcb->local_ip))) { + return 1; + } + } + } else +#endif /* LWIP_IPV4 */ + /* Handle IPv4 and IPv6: catch all or exact match */ + if (ip_addr_isany(&pcb->local_ip) || + ip_addr_cmp(&pcb->local_ip, ip_current_dest_addr())) { + return 1; + } + } + + return 0; +} + +/** + * Determine if in incoming IP packet is covered by a RAW PCB + * and if so, pass it to a user-provided receive callback function. + * + * Given an incoming IP datagram (as a chain of pbufs) this function + * finds a corresponding RAW PCB and calls the corresponding receive + * callback function. + * + * @param p pbuf to be demultiplexed to a RAW PCB. + * @param inp network interface on which the datagram was received. + * @return - 1 if the packet has been eaten by a RAW PCB receive + * callback function. The caller MAY NOT not reference the + * packet any longer, and MAY NOT call pbuf_free(). + * @return - 0 if packet is not eaten (pbuf is still referenced by the + * caller). + * + */ +raw_input_state_t +raw_input(struct pbuf *p, struct netif *inp) +{ + struct raw_pcb *pcb, *prev; + s16_t proto; + raw_input_state_t ret = RAW_INPUT_NONE; + u8_t broadcast = ip_addr_isbroadcast(ip_current_dest_addr(), ip_current_netif()); + + LWIP_UNUSED_ARG(inp); + +#if LWIP_IPV6 +#if LWIP_IPV4 + if (IP_HDR_GET_VERSION(p->payload) == 6) +#endif /* LWIP_IPV4 */ + { + struct ip6_hdr *ip6hdr = (struct ip6_hdr *)p->payload; + proto = IP6H_NEXTH(ip6hdr); + } +#if LWIP_IPV4 + else +#endif /* LWIP_IPV4 */ +#endif /* LWIP_IPV6 */ +#if LWIP_IPV4 + { + proto = IPH_PROTO((struct ip_hdr *)p->payload); + } +#endif /* LWIP_IPV4 */ + + prev = NULL; + pcb = raw_pcbs; + /* loop through all raw pcbs until the packet is eaten by one */ + /* this allows multiple pcbs to match against the packet by design */ + while (pcb != NULL) { + if ((pcb->protocol == proto) && raw_input_local_match(pcb, broadcast) && + (((pcb->flags & RAW_FLAGS_CONNECTED) == 0) || + ip_addr_cmp(&pcb->remote_ip, ip_current_src_addr()))) { + /* receive callback function available? */ + if (pcb->recv != NULL) { + u8_t eaten; +#ifndef LWIP_NOASSERT + void *old_payload = p->payload; +#endif + ret = RAW_INPUT_DELIVERED; + /* the receive callback function did not eat the packet? */ + eaten = pcb->recv(pcb->recv_arg, pcb, p, ip_current_src_addr()); + if (eaten != 0) { + /* receive function ate the packet */ + p = NULL; + if (prev != NULL) { + /* move the pcb to the front of raw_pcbs so that is + found faster next time */ + prev->next = pcb->next; + pcb->next = raw_pcbs; + raw_pcbs = pcb; + } + return RAW_INPUT_EATEN; + } else { + /* sanity-check that the receive callback did not alter the pbuf */ + LWIP_ASSERT("raw pcb recv callback altered pbuf payload pointer without eating packet", + p->payload == old_payload); + } + } + /* no receive callback function was set for this raw PCB */ + } + /* drop the packet */ + prev = pcb; + pcb = pcb->next; + } + return ret; +} + +/** + * @ingroup raw_raw + * Bind a RAW PCB. + * + * @param pcb RAW PCB to be bound with a local address ipaddr. + * @param ipaddr local IP address to bind with. Use IP4_ADDR_ANY to + * bind to all local interfaces. + * + * @return lwIP error code. + * - ERR_OK. Successful. No error occurred. + * - ERR_USE. The specified IP address is already bound to by + * another RAW PCB. + * + * @see raw_disconnect() + */ +err_t +raw_bind(struct raw_pcb *pcb, const ip_addr_t *ipaddr) +{ + LWIP_ASSERT_CORE_LOCKED(); + if ((pcb == NULL) || (ipaddr == NULL)) { + return ERR_VAL; + } + ip_addr_set_ipaddr(&pcb->local_ip, ipaddr); +#if LWIP_IPV6 && LWIP_IPV6_SCOPES + /* If the given IP address should have a zone but doesn't, assign one now. + * This is legacy support: scope-aware callers should always provide properly + * zoned source addresses. */ + if (IP_IS_V6(&pcb->local_ip) && + ip6_addr_lacks_zone(ip_2_ip6(&pcb->local_ip), IP6_UNKNOWN)) { + ip6_addr_select_zone(ip_2_ip6(&pcb->local_ip), ip_2_ip6(&pcb->local_ip)); + } +#endif /* LWIP_IPV6 && LWIP_IPV6_SCOPES */ + return ERR_OK; +} + +/** + * @ingroup raw_raw + * Bind an RAW PCB to a specific netif. + * After calling this function, all packets received via this PCB + * are guaranteed to have come in via the specified netif, and all + * outgoing packets will go out via the specified netif. + * + * @param pcb RAW PCB to be bound with netif. + * @param netif netif to bind to. Can be NULL. + * + * @see raw_disconnect() + */ +void +raw_bind_netif(struct raw_pcb *pcb, const struct netif *netif) +{ + LWIP_ASSERT_CORE_LOCKED(); + if (netif != NULL) { + pcb->netif_idx = netif_get_index(netif); + } else { + pcb->netif_idx = NETIF_NO_INDEX; + } +} + +/** + * @ingroup raw_raw + * Connect an RAW PCB. This function is required by upper layers + * of lwip. Using the raw api you could use raw_sendto() instead + * + * This will associate the RAW PCB with the remote address. + * + * @param pcb RAW PCB to be connected with remote address ipaddr and port. + * @param ipaddr remote IP address to connect with. + * + * @return lwIP error code + * + * @see raw_disconnect() and raw_sendto() + */ +err_t +raw_connect(struct raw_pcb *pcb, const ip_addr_t *ipaddr) +{ + LWIP_ASSERT_CORE_LOCKED(); + if ((pcb == NULL) || (ipaddr == NULL)) { + return ERR_VAL; + } + ip_addr_set_ipaddr(&pcb->remote_ip, ipaddr); +#if LWIP_IPV6 && LWIP_IPV6_SCOPES + /* If the given IP address should have a zone but doesn't, assign one now, + * using the bound address to make a more informed decision when possible. */ + if (IP_IS_V6(&pcb->remote_ip) && + ip6_addr_lacks_zone(ip_2_ip6(&pcb->remote_ip), IP6_UNKNOWN)) { + ip6_addr_select_zone(ip_2_ip6(&pcb->remote_ip), ip_2_ip6(&pcb->local_ip)); + } +#endif /* LWIP_IPV6 && LWIP_IPV6_SCOPES */ + raw_set_flags(pcb, RAW_FLAGS_CONNECTED); + return ERR_OK; +} + +/** + * @ingroup raw_raw + * Disconnect a RAW PCB. + * + * @param pcb the raw pcb to disconnect. + */ +void +raw_disconnect(struct raw_pcb *pcb) +{ + LWIP_ASSERT_CORE_LOCKED(); + /* reset remote address association */ +#if LWIP_IPV4 && LWIP_IPV6 + if (IP_IS_ANY_TYPE_VAL(pcb->local_ip)) { + ip_addr_copy(pcb->remote_ip, *IP_ANY_TYPE); + } else { +#endif + ip_addr_set_any(IP_IS_V6_VAL(pcb->remote_ip), &pcb->remote_ip); +#if LWIP_IPV4 && LWIP_IPV6 + } +#endif + pcb->netif_idx = NETIF_NO_INDEX; + /* mark PCB as unconnected */ + raw_clear_flags(pcb, RAW_FLAGS_CONNECTED); +} + +/** + * @ingroup raw_raw + * Set the callback function for received packets that match the + * raw PCB's protocol and binding. + * + * The callback function MUST either + * - eat the packet by calling pbuf_free() and returning non-zero. The + * packet will not be passed to other raw PCBs or other protocol layers. + * - not free the packet, and return zero. The packet will be matched + * against further PCBs and/or forwarded to another protocol layers. + */ +void +raw_recv(struct raw_pcb *pcb, raw_recv_fn recv, void *recv_arg) +{ + LWIP_ASSERT_CORE_LOCKED(); + /* remember recv() callback and user data */ + pcb->recv = recv; + pcb->recv_arg = recv_arg; +} + +/** + * @ingroup raw_raw + * Send the raw IP packet to the given address. An IP header will be prepended + * to the packet, unless the RAW_FLAGS_HDRINCL flag is set on the PCB. In that + * case, the packet must include an IP header, which will then be sent as is. + * + * @param pcb the raw pcb which to send + * @param p the IP payload to send + * @param ipaddr the destination address of the IP packet + * + */ +err_t +raw_sendto(struct raw_pcb *pcb, struct pbuf *p, const ip_addr_t *ipaddr) +{ + struct netif *netif; + const ip_addr_t *src_ip; + + if ((pcb == NULL) || (ipaddr == NULL) || !IP_ADDR_PCB_VERSION_MATCH(pcb, ipaddr)) { + return ERR_VAL; + } + + LWIP_DEBUGF(RAW_DEBUG | LWIP_DBG_TRACE, ("raw_sendto\n")); + + if (pcb->netif_idx != NETIF_NO_INDEX) { + netif = netif_get_by_index(pcb->netif_idx); + } else { +#if LWIP_MULTICAST_TX_OPTIONS + netif = NULL; + if (ip_addr_ismulticast(ipaddr)) { + /* For multicast-destined packets, use the user-provided interface index to + * determine the outgoing interface, if an interface index is set and a + * matching netif can be found. Otherwise, fall back to regular routing. */ + netif = netif_get_by_index(pcb->mcast_ifindex); + } + + if (netif == NULL) +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + { + netif = ip_route(&pcb->local_ip, ipaddr); + } + } + + if (netif == NULL) { + LWIP_DEBUGF(RAW_DEBUG | LWIP_DBG_LEVEL_WARNING, ("raw_sendto: No route to ")); + ip_addr_debug_print(RAW_DEBUG | LWIP_DBG_LEVEL_WARNING, ipaddr); + return ERR_RTE; + } + + if (ip_addr_isany(&pcb->local_ip) || ip_addr_ismulticast(&pcb->local_ip)) { + /* use outgoing network interface IP address as source address */ + src_ip = ip_netif_get_local_ip(netif, ipaddr); +#if LWIP_IPV6 + if (src_ip == NULL) { + return ERR_RTE; + } +#endif /* LWIP_IPV6 */ + } else { + /* use RAW PCB local IP address as source address */ + src_ip = &pcb->local_ip; + } + + return raw_sendto_if_src(pcb, p, ipaddr, netif, src_ip); +} + +/** + * @ingroup raw_raw + * Send the raw IP packet to the given address, using a particular outgoing + * netif and source IP address. An IP header will be prepended to the packet, + * unless the RAW_FLAGS_HDRINCL flag is set on the PCB. In that case, the + * packet must include an IP header, which will then be sent as is. + * + * @param pcb RAW PCB used to send the data + * @param p chain of pbufs to be sent + * @param dst_ip destination IP address + * @param netif the netif used for sending + * @param src_ip source IP address + */ +err_t +raw_sendto_if_src(struct raw_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip, + struct netif *netif, const ip_addr_t *src_ip) +{ + err_t err; + struct pbuf *q; /* q will be sent down the stack */ + u16_t header_size; + u8_t ttl; + + LWIP_ASSERT_CORE_LOCKED(); + + if ((pcb == NULL) || (dst_ip == NULL) || (netif == NULL) || (src_ip == NULL) || + !IP_ADDR_PCB_VERSION_MATCH(pcb, src_ip) || !IP_ADDR_PCB_VERSION_MATCH(pcb, dst_ip)) { + return ERR_VAL; + } + + header_size = ( +#if LWIP_IPV4 && LWIP_IPV6 + IP_IS_V6(dst_ip) ? IP6_HLEN : IP_HLEN); +#elif LWIP_IPV4 + IP_HLEN); +#else + IP6_HLEN); +#endif + + /* Handle the HDRINCL option as an exception: none of the code below applies + * to this case, and sending the packet needs to be done differently too. */ + if (pcb->flags & RAW_FLAGS_HDRINCL) { + /* A full header *must* be present in the first pbuf of the chain, as the + * output routines may access its fields directly. */ + if (p->len < header_size) { + return ERR_VAL; + } + /* @todo multicast loop support, if at all desired for this scenario.. */ + NETIF_SET_HINTS(netif, &pcb->netif_hints); + err = ip_output_if_hdrincl(p, src_ip, dst_ip, netif); + NETIF_RESET_HINTS(netif); + return err; + } + + /* packet too large to add an IP header without causing an overflow? */ + if ((u16_t)(p->tot_len + header_size) < p->tot_len) { + return ERR_MEM; + } + /* not enough space to add an IP header to first pbuf in given p chain? */ + if (pbuf_add_header(p, header_size)) { + /* allocate header in new pbuf */ + q = pbuf_alloc(PBUF_IP, 0, PBUF_RAM); + /* new header pbuf could not be allocated? */ + if (q == NULL) { + LWIP_DEBUGF(RAW_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("raw_sendto: could not allocate header\n")); + return ERR_MEM; + } + if (p->tot_len != 0) { + /* chain header q in front of given pbuf p */ + pbuf_chain(q, p); + } + /* { first pbuf q points to header pbuf } */ + LWIP_DEBUGF(RAW_DEBUG, ("raw_sendto: added header pbuf %p before given pbuf %p\n", (void *)q, (void *)p)); + } else { + /* first pbuf q equals given pbuf */ + q = p; + if (pbuf_remove_header(q, header_size)) { + LWIP_ASSERT("Can't restore header we just removed!", 0); + return ERR_MEM; + } + } + +#if IP_SOF_BROADCAST + if (IP_IS_V4(dst_ip)) { + /* broadcast filter? */ + if (!ip_get_option(pcb, SOF_BROADCAST) && ip_addr_isbroadcast(dst_ip, netif)) { + LWIP_DEBUGF(RAW_DEBUG | LWIP_DBG_LEVEL_WARNING, ("raw_sendto: SOF_BROADCAST not enabled on pcb %p\n", (void *)pcb)); + /* free any temporary header pbuf allocated by pbuf_header() */ + if (q != p) { + pbuf_free(q); + } + return ERR_VAL; + } + } +#endif /* IP_SOF_BROADCAST */ + + /* Multicast Loop? */ +#if LWIP_MULTICAST_TX_OPTIONS + if (((pcb->flags & RAW_FLAGS_MULTICAST_LOOP) != 0) && ip_addr_ismulticast(dst_ip)) { + q->flags |= PBUF_FLAG_MCASTLOOP; + } +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + +#if LWIP_IPV6 + /* If requested, based on the IPV6_CHECKSUM socket option per RFC3542, + compute the checksum and update the checksum in the payload. */ + if (IP_IS_V6(dst_ip) && pcb->chksum_reqd) { + u16_t chksum = ip6_chksum_pseudo(p, pcb->protocol, p->tot_len, ip_2_ip6(src_ip), ip_2_ip6(dst_ip)); + LWIP_ASSERT("Checksum must fit into first pbuf", p->len >= (pcb->chksum_offset + 2)); + SMEMCPY(((u8_t *)p->payload) + pcb->chksum_offset, &chksum, sizeof(u16_t)); + } +#endif + + /* Determine TTL to use */ +#if LWIP_MULTICAST_TX_OPTIONS + ttl = (ip_addr_ismulticast(dst_ip) ? raw_get_multicast_ttl(pcb) : pcb->ttl); +#else /* LWIP_MULTICAST_TX_OPTIONS */ + ttl = pcb->ttl; +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + + NETIF_SET_HINTS(netif, &pcb->netif_hints); + err = ip_output_if(q, src_ip, dst_ip, ttl, pcb->tos, pcb->protocol, netif); + NETIF_RESET_HINTS(netif); + + /* did we chain a header earlier? */ + if (q != p) { + /* free the header */ + pbuf_free(q); + } + return err; +} + +/** + * @ingroup raw_raw + * Send the raw IP packet to the address given by raw_connect() + * + * @param pcb the raw pcb which to send + * @param p the IP payload to send + * + */ +err_t +raw_send(struct raw_pcb *pcb, struct pbuf *p) +{ + return raw_sendto(pcb, p, &pcb->remote_ip); +} + +/** + * @ingroup raw_raw + * Remove an RAW PCB. + * + * @param pcb RAW PCB to be removed. The PCB is removed from the list of + * RAW PCB's and the data structure is freed from memory. + * + * @see raw_new() + */ +void +raw_remove(struct raw_pcb *pcb) +{ + struct raw_pcb *pcb2; + LWIP_ASSERT_CORE_LOCKED(); + /* pcb to be removed is first in list? */ + if (raw_pcbs == pcb) { + /* make list start at 2nd pcb */ + raw_pcbs = raw_pcbs->next; + /* pcb not 1st in list */ + } else { + for (pcb2 = raw_pcbs; pcb2 != NULL; pcb2 = pcb2->next) { + /* find pcb in raw_pcbs list */ + if (pcb2->next != NULL && pcb2->next == pcb) { + /* remove pcb from list */ + pcb2->next = pcb->next; + break; + } + } + } + memp_free(MEMP_RAW_PCB, pcb); +} + +/** + * @ingroup raw_raw + * Create a RAW PCB. + * + * @return The RAW PCB which was created. NULL if the PCB data structure + * could not be allocated. + * + * @param proto the protocol number of the IPs payload (e.g. IP_PROTO_ICMP) + * + * @see raw_remove() + */ +struct raw_pcb * +raw_new(u8_t proto) +{ + struct raw_pcb *pcb; + + LWIP_DEBUGF(RAW_DEBUG | LWIP_DBG_TRACE, ("raw_new\n")); + LWIP_ASSERT_CORE_LOCKED(); + + pcb = (struct raw_pcb *)memp_malloc(MEMP_RAW_PCB); + /* could allocate RAW PCB? */ + if (pcb != NULL) { + /* initialize PCB to all zeroes */ + memset(pcb, 0, sizeof(struct raw_pcb)); + pcb->protocol = proto; + pcb->ttl = RAW_TTL; +#if LWIP_MULTICAST_TX_OPTIONS + raw_set_multicast_ttl(pcb, RAW_TTL); +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + pcb->next = raw_pcbs; + raw_pcbs = pcb; + } + return pcb; +} + +/** + * @ingroup raw_raw + * Create a RAW PCB for specific IP type. + * + * @return The RAW PCB which was created. NULL if the PCB data structure + * could not be allocated. + * + * @param type IP address type, see @ref lwip_ip_addr_type definitions. + * If you want to listen to IPv4 and IPv6 (dual-stack) packets, + * supply @ref IPADDR_TYPE_ANY as argument and bind to @ref IP_ANY_TYPE. + * @param proto the protocol number (next header) of the IPv6 packet payload + * (e.g. IP6_NEXTH_ICMP6) + * + * @see raw_remove() + */ +struct raw_pcb * +raw_new_ip_type(u8_t type, u8_t proto) +{ + struct raw_pcb *pcb; + LWIP_ASSERT_CORE_LOCKED(); + pcb = raw_new(proto); +#if LWIP_IPV4 && LWIP_IPV6 + if (pcb != NULL) { + IP_SET_TYPE_VAL(pcb->local_ip, type); + IP_SET_TYPE_VAL(pcb->remote_ip, type); + } +#else /* LWIP_IPV4 && LWIP_IPV6 */ + LWIP_UNUSED_ARG(type); +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + return pcb; +} + +/** This function is called from netif.c when address is changed + * + * @param old_addr IP address of the netif before change + * @param new_addr IP address of the netif after change + */ +void raw_netif_ip_addr_changed(const ip_addr_t *old_addr, const ip_addr_t *new_addr) +{ + struct raw_pcb *rpcb; + + if (!ip_addr_isany(old_addr) && !ip_addr_isany(new_addr)) { + for (rpcb = raw_pcbs; rpcb != NULL; rpcb = rpcb->next) { + /* PCB bound to current local interface address? */ + if (ip_addr_cmp(&rpcb->local_ip, old_addr)) { + /* The PCB is bound to the old ipaddr and + * is set to bound to the new one instead */ + ip_addr_copy(rpcb->local_ip, *new_addr); + } + } + } +} + +#endif /* LWIP_RAW */ diff --git a/Other/tun2socks/core/c/core/stats.c b/Other/tun2socks/core/c/core/stats.c new file mode 100644 index 0000000..34e9b27 --- /dev/null +++ b/Other/tun2socks/core/c/core/stats.c @@ -0,0 +1,169 @@ +/** + * @file + * Statistics module + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#if LWIP_STATS /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/def.h" +#include "lwip/stats.h" +#include "lwip/mem.h" +#include "lwip/debug.h" + +#include + +struct stats_ lwip_stats; + +void +stats_init(void) +{ +#ifdef LWIP_DEBUG +#if MEM_STATS + lwip_stats.mem.name = "MEM"; +#endif /* MEM_STATS */ +#endif /* LWIP_DEBUG */ +} + +#if LWIP_STATS_DISPLAY +void +stats_display_proto(struct stats_proto *proto, const char *name) +{ + LWIP_PLATFORM_DIAG(("\n%s\n\t", name)); + LWIP_PLATFORM_DIAG(("xmit: %"STAT_COUNTER_F"\n\t", proto->xmit)); + LWIP_PLATFORM_DIAG(("recv: %"STAT_COUNTER_F"\n\t", proto->recv)); + LWIP_PLATFORM_DIAG(("fw: %"STAT_COUNTER_F"\n\t", proto->fw)); + LWIP_PLATFORM_DIAG(("drop: %"STAT_COUNTER_F"\n\t", proto->drop)); + LWIP_PLATFORM_DIAG(("chkerr: %"STAT_COUNTER_F"\n\t", proto->chkerr)); + LWIP_PLATFORM_DIAG(("lenerr: %"STAT_COUNTER_F"\n\t", proto->lenerr)); + LWIP_PLATFORM_DIAG(("memerr: %"STAT_COUNTER_F"\n\t", proto->memerr)); + LWIP_PLATFORM_DIAG(("rterr: %"STAT_COUNTER_F"\n\t", proto->rterr)); + LWIP_PLATFORM_DIAG(("proterr: %"STAT_COUNTER_F"\n\t", proto->proterr)); + LWIP_PLATFORM_DIAG(("opterr: %"STAT_COUNTER_F"\n\t", proto->opterr)); + LWIP_PLATFORM_DIAG(("err: %"STAT_COUNTER_F"\n\t", proto->err)); + LWIP_PLATFORM_DIAG(("cachehit: %"STAT_COUNTER_F"\n", proto->cachehit)); +} + +#if IGMP_STATS || MLD6_STATS +void +stats_display_igmp(struct stats_igmp *igmp, const char *name) +{ + LWIP_PLATFORM_DIAG(("\n%s\n\t", name)); + LWIP_PLATFORM_DIAG(("xmit: %"STAT_COUNTER_F"\n\t", igmp->xmit)); + LWIP_PLATFORM_DIAG(("recv: %"STAT_COUNTER_F"\n\t", igmp->recv)); + LWIP_PLATFORM_DIAG(("drop: %"STAT_COUNTER_F"\n\t", igmp->drop)); + LWIP_PLATFORM_DIAG(("chkerr: %"STAT_COUNTER_F"\n\t", igmp->chkerr)); + LWIP_PLATFORM_DIAG(("lenerr: %"STAT_COUNTER_F"\n\t", igmp->lenerr)); + LWIP_PLATFORM_DIAG(("memerr: %"STAT_COUNTER_F"\n\t", igmp->memerr)); + LWIP_PLATFORM_DIAG(("proterr: %"STAT_COUNTER_F"\n\t", igmp->proterr)); + LWIP_PLATFORM_DIAG(("rx_v1: %"STAT_COUNTER_F"\n\t", igmp->rx_v1)); + LWIP_PLATFORM_DIAG(("rx_group: %"STAT_COUNTER_F"\n\t", igmp->rx_group)); + LWIP_PLATFORM_DIAG(("rx_general: %"STAT_COUNTER_F"\n\t", igmp->rx_general)); + LWIP_PLATFORM_DIAG(("rx_report: %"STAT_COUNTER_F"\n\t", igmp->rx_report)); + LWIP_PLATFORM_DIAG(("tx_join: %"STAT_COUNTER_F"\n\t", igmp->tx_join)); + LWIP_PLATFORM_DIAG(("tx_leave: %"STAT_COUNTER_F"\n\t", igmp->tx_leave)); + LWIP_PLATFORM_DIAG(("tx_report: %"STAT_COUNTER_F"\n", igmp->tx_report)); +} +#endif /* IGMP_STATS || MLD6_STATS */ + +#if MEM_STATS || MEMP_STATS +void +stats_display_mem(struct stats_mem *mem, const char *name) +{ + LWIP_PLATFORM_DIAG(("\nMEM %s\n\t", name)); + LWIP_PLATFORM_DIAG(("avail: %"MEM_SIZE_F"\n\t", mem->avail)); + LWIP_PLATFORM_DIAG(("used: %"MEM_SIZE_F"\n\t", mem->used)); + LWIP_PLATFORM_DIAG(("max: %"MEM_SIZE_F"\n\t", mem->max)); + LWIP_PLATFORM_DIAG(("err: %"STAT_COUNTER_F"\n", mem->err)); +} + +#if MEMP_STATS +void +stats_display_memp(struct stats_mem *mem, int idx) +{ + if (idx < MEMP_MAX) { + stats_display_mem(mem, mem->name); + } +} +#endif /* MEMP_STATS */ +#endif /* MEM_STATS || MEMP_STATS */ + +#if SYS_STATS +void +stats_display_sys(struct stats_sys *sys) +{ + LWIP_PLATFORM_DIAG(("\nSYS\n\t")); + LWIP_PLATFORM_DIAG(("sem.used: %"STAT_COUNTER_F"\n\t", sys->sem.used)); + LWIP_PLATFORM_DIAG(("sem.max: %"STAT_COUNTER_F"\n\t", sys->sem.max)); + LWIP_PLATFORM_DIAG(("sem.err: %"STAT_COUNTER_F"\n\t", sys->sem.err)); + LWIP_PLATFORM_DIAG(("mutex.used: %"STAT_COUNTER_F"\n\t", sys->mutex.used)); + LWIP_PLATFORM_DIAG(("mutex.max: %"STAT_COUNTER_F"\n\t", sys->mutex.max)); + LWIP_PLATFORM_DIAG(("mutex.err: %"STAT_COUNTER_F"\n\t", sys->mutex.err)); + LWIP_PLATFORM_DIAG(("mbox.used: %"STAT_COUNTER_F"\n\t", sys->mbox.used)); + LWIP_PLATFORM_DIAG(("mbox.max: %"STAT_COUNTER_F"\n\t", sys->mbox.max)); + LWIP_PLATFORM_DIAG(("mbox.err: %"STAT_COUNTER_F"\n", sys->mbox.err)); +} +#endif /* SYS_STATS */ + +void +stats_display(void) +{ + s16_t i; + + LINK_STATS_DISPLAY(); + ETHARP_STATS_DISPLAY(); + IPFRAG_STATS_DISPLAY(); + IP6_FRAG_STATS_DISPLAY(); + IP_STATS_DISPLAY(); + ND6_STATS_DISPLAY(); + IP6_STATS_DISPLAY(); + IGMP_STATS_DISPLAY(); + MLD6_STATS_DISPLAY(); + ICMP_STATS_DISPLAY(); + ICMP6_STATS_DISPLAY(); + UDP_STATS_DISPLAY(); + TCP_STATS_DISPLAY(); + MEM_STATS_DISPLAY(); + for (i = 0; i < MEMP_MAX; i++) { + MEMP_STATS_DISPLAY(i); + } + SYS_STATS_DISPLAY(); +} +#endif /* LWIP_STATS_DISPLAY */ + +#endif /* LWIP_STATS */ + diff --git a/Other/tun2socks/core/c/core/sys.c b/Other/tun2socks/core/c/core/sys.c new file mode 100644 index 0000000..5f08352 --- /dev/null +++ b/Other/tun2socks/core/c/core/sys.c @@ -0,0 +1,148 @@ +/** + * @file + * lwIP Operating System abstraction + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +/** + * @defgroup sys_layer Porting (system abstraction layer) + * @ingroup lwip + * + * @defgroup sys_os OS abstraction layer + * @ingroup sys_layer + * No need to implement functions in this section in NO_SYS mode. + * The OS-specific code should be implemented in arch/sys_arch.h + * and sys_arch.c of your port. + * + * The operating system emulation layer provides a common interface + * between the lwIP code and the underlying operating system kernel. The + * general idea is that porting lwIP to new architectures requires only + * small changes to a few header files and a new sys_arch + * implementation. It is also possible to do a sys_arch implementation + * that does not rely on any underlying operating system. + * + * The sys_arch provides semaphores, mailboxes and mutexes to lwIP. For the full + * lwIP functionality, multiple threads support can be implemented in the + * sys_arch, but this is not required for the basic lwIP + * functionality. Timer scheduling is implemented in lwIP, but can be implemented + * by the sys_arch port (LWIP_TIMERS_CUSTOM==1). + * + * In addition to the source file providing the functionality of sys_arch, + * the OS emulation layer must provide several header files defining + * macros used throughout lwip. The files required and the macros they + * must define are listed below the sys_arch description. + * + * Since lwIP 1.4.0, semaphore, mutexes and mailbox functions are prototyped in a way that + * allows both using pointers or actual OS structures to be used. This way, memory + * required for such types can be either allocated in place (globally or on the + * stack) or on the heap (allocated internally in the "*_new()" functions). + * + * Note: + * ----- + * Be careful with using mem_malloc() in sys_arch. When malloc() refers to + * mem_malloc() you can run into a circular function call problem. In mem.c + * mem_init() tries to allocate a semaphore using mem_malloc, which of course + * can't be performed when sys_arch uses mem_malloc. + * + * @defgroup sys_sem Semaphores + * @ingroup sys_os + * Semaphores can be either counting or binary - lwIP works with both + * kinds. + * Semaphores are represented by the type "sys_sem_t" which is typedef'd + * in the sys_arch.h file. Mailboxes are equivalently represented by the + * type "sys_mbox_t". Mutexes are represented by the type "sys_mutex_t". + * lwIP does not place any restrictions on how these types are represented + * internally. + * + * @defgroup sys_mutex Mutexes + * @ingroup sys_os + * Mutexes are recommended to correctly handle priority inversion, + * especially if you use LWIP_CORE_LOCKING . + * + * @defgroup sys_mbox Mailboxes + * @ingroup sys_os + * Mailboxes should be implemented as a queue which allows multiple messages + * to be posted (implementing as a rendez-vous point where only one message can be + * posted at a time can have a highly negative impact on performance). A message + * in a mailbox is just a pointer, nothing more. + * + * @defgroup sys_time Time + * @ingroup sys_layer + * + * @defgroup sys_prot Critical sections + * @ingroup sys_layer + * Used to protect short regions of code against concurrent access. + * - Your system is a bare-metal system (probably with an RTOS) + * and interrupts are under your control: + * Implement this as LockInterrupts() / UnlockInterrupts() + * - Your system uses an RTOS with deferred interrupt handling from a + * worker thread: Implement as a global mutex or lock/unlock scheduler + * - Your system uses a high-level OS with e.g. POSIX signals: + * Implement as a global mutex + * + * @defgroup sys_misc Misc + * @ingroup sys_os + */ + +#include "lwip/opt.h" + +#include "lwip/sys.h" + +/* Most of the functions defined in sys.h must be implemented in the + * architecture-dependent file sys_arch.c */ + +#if !NO_SYS + +#ifndef sys_msleep +/** + * Sleep for some ms. Timeouts are NOT processed while sleeping. + * + * @param ms number of milliseconds to sleep + */ +void +sys_msleep(u32_t ms) +{ + if (ms > 0) { + sys_sem_t delaysem; + err_t err = sys_sem_new(&delaysem, 0); + if (err == ERR_OK) { + sys_arch_sem_wait(&delaysem, ms); + sys_sem_free(&delaysem); + } + } +} +#endif /* sys_msleep */ + +#endif /* !NO_SYS */ diff --git a/Other/tun2socks/core/c/core/tcp.c b/Other/tun2socks/core/c/core/tcp.c new file mode 100644 index 0000000..bd7d64e --- /dev/null +++ b/Other/tun2socks/core/c/core/tcp.c @@ -0,0 +1,2686 @@ +/** + * @file + * Transmission Control Protocol for IP + * See also @ref tcp_raw + * + * @defgroup tcp_raw TCP + * @ingroup callbackstyle_api + * Transmission Control Protocol for IP\n + * @see @ref api + * + * Common functions for the TCP implementation, such as functions + * for manipulating the data structures and the TCP timer functions. TCP functions + * related to input and output is found in tcp_in.c and tcp_out.c respectively.\n + * + * TCP connection setup + * -------------------- + * The functions used for setting up connections is similar to that of + * the sequential API and of the BSD socket API. A new TCP connection + * identifier (i.e., a protocol control block - PCB) is created with the + * tcp_new() function. This PCB can then be either set to listen for new + * incoming connections or be explicitly connected to another host. + * - tcp_new() + * - tcp_bind() + * - tcp_listen() and tcp_listen_with_backlog() + * - tcp_accept() + * - tcp_connect() + * + * Sending TCP data + * ---------------- + * TCP data is sent by enqueueing the data with a call to tcp_write() and + * triggering to send by calling tcp_output(). When the data is successfully + * transmitted to the remote host, the application will be notified with a + * call to a specified callback function. + * - tcp_write() + * - tcp_output() + * - tcp_sent() + * + * Receiving TCP data + * ------------------ + * TCP data reception is callback based - an application specified + * callback function is called when new data arrives. When the + * application has taken the data, it has to call the tcp_recved() + * function to indicate that TCP can advertise increase the receive + * window. + * - tcp_recv() + * - tcp_recved() + * + * Application polling + * ------------------- + * When a connection is idle (i.e., no data is either transmitted or + * received), lwIP will repeatedly poll the application by calling a + * specified callback function. This can be used either as a watchdog + * timer for killing connections that have stayed idle for too long, or + * as a method of waiting for memory to become available. For instance, + * if a call to tcp_write() has failed because memory wasn't available, + * the application may use the polling functionality to call tcp_write() + * again when the connection has been idle for a while. + * - tcp_poll() + * + * Closing and aborting connections + * -------------------------------- + * - tcp_close() + * - tcp_abort() + * - tcp_err() + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#if LWIP_TCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/def.h" +#include "lwip/mem.h" +#include "lwip/memp.h" +#include "lwip/tcp.h" +#include "lwip/priv/tcp_priv.h" +#include "lwip/debug.h" +#include "lwip/stats.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/nd6.h" + +#include + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif + +#ifndef TCP_LOCAL_PORT_RANGE_START +/* From http://www.iana.org/assignments/port-numbers: + "The Dynamic and/or Private Ports are those from 49152 through 65535" */ +#define TCP_LOCAL_PORT_RANGE_START 0xc000 +#define TCP_LOCAL_PORT_RANGE_END 0xffff +#define TCP_ENSURE_LOCAL_PORT_RANGE(port) ((u16_t)(((port) & (u16_t)~TCP_LOCAL_PORT_RANGE_START) + TCP_LOCAL_PORT_RANGE_START)) +#endif + +#if LWIP_TCP_KEEPALIVE +#define TCP_KEEP_DUR(pcb) ((pcb)->keep_cnt * (pcb)->keep_intvl) +#define TCP_KEEP_INTVL(pcb) ((pcb)->keep_intvl) +#else /* LWIP_TCP_KEEPALIVE */ +#define TCP_KEEP_DUR(pcb) TCP_MAXIDLE +#define TCP_KEEP_INTVL(pcb) TCP_KEEPINTVL_DEFAULT +#endif /* LWIP_TCP_KEEPALIVE */ + +/* As initial send MSS, we use TCP_MSS but limit it to 536. */ +#if TCP_MSS > 536 +#define INITIAL_MSS 536 +#else +#define INITIAL_MSS TCP_MSS +#endif + +static const char *const tcp_state_str[] = { + "CLOSED", + "LISTEN", + "SYN_SENT", + "SYN_RCVD", + "ESTABLISHED", + "FIN_WAIT_1", + "FIN_WAIT_2", + "CLOSE_WAIT", + "CLOSING", + "LAST_ACK", + "TIME_WAIT" +}; + +/* last local TCP port */ +static u16_t tcp_port = TCP_LOCAL_PORT_RANGE_START; + +/* Incremented every coarse grained timer shot (typically every 500 ms). */ +u32_t tcp_ticks; +static const u8_t tcp_backoff[13] = +{ 1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7}; +/* Times per slowtmr hits */ +static const u8_t tcp_persist_backoff[7] = { 3, 6, 12, 24, 48, 96, 120 }; + +/* The TCP PCB lists. */ + +/** List of all TCP PCBs bound but not yet (connected || listening) */ +struct tcp_pcb *tcp_bound_pcbs; +/** List of all TCP PCBs in LISTEN state */ +union tcp_listen_pcbs_t tcp_listen_pcbs; +/** List of all TCP PCBs that are in a state in which + * they accept or send data. */ +struct tcp_pcb *tcp_active_pcbs; +/** List of all TCP PCBs in TIME-WAIT state */ +struct tcp_pcb *tcp_tw_pcbs; + +/** An array with all (non-temporary) PCB lists, mainly used for smaller code size */ +struct tcp_pcb **const tcp_pcb_lists[] = {&tcp_listen_pcbs.pcbs, &tcp_bound_pcbs, + &tcp_active_pcbs, &tcp_tw_pcbs +}; + +u8_t tcp_active_pcbs_changed; + +/** Timer counter to handle calling slow-timer from tcp_tmr() */ +static u8_t tcp_timer; +static u8_t tcp_timer_ctr; +static u16_t tcp_new_port(void); + +static err_t tcp_close_shutdown_fin(struct tcp_pcb *pcb); +#if LWIP_TCP_PCB_NUM_EXT_ARGS +static void tcp_ext_arg_invoke_callbacks_destroyed(struct tcp_pcb_ext_args *ext_args); +#endif + +/** + * Initialize this module. + */ +void +tcp_init(void) +{ +#ifdef LWIP_RAND + tcp_port = TCP_ENSURE_LOCAL_PORT_RANGE(LWIP_RAND()); +#endif /* LWIP_RAND */ +} + +/** Free a tcp pcb */ +void +tcp_free(struct tcp_pcb *pcb) +{ + LWIP_ASSERT("tcp_free: LISTEN", pcb->state != LISTEN); +#if LWIP_TCP_PCB_NUM_EXT_ARGS + tcp_ext_arg_invoke_callbacks_destroyed(pcb->ext_args); +#endif + memp_free(MEMP_TCP_PCB, pcb); +} + +/** Free a tcp listen pcb */ +static void +tcp_free_listen(struct tcp_pcb *pcb) +{ + LWIP_ASSERT("tcp_free_listen: !LISTEN", pcb->state != LISTEN); +#if LWIP_TCP_PCB_NUM_EXT_ARGS + tcp_ext_arg_invoke_callbacks_destroyed(pcb->ext_args); +#endif + memp_free(MEMP_TCP_PCB_LISTEN, pcb); +} + +/** + * Called periodically to dispatch TCP timers. + */ +void +tcp_tmr(void) +{ + /* Call tcp_fasttmr() every 250 ms */ + tcp_fasttmr(); + + if (++tcp_timer & 1) { + /* Call tcp_slowtmr() every 500 ms, i.e., every other timer + tcp_tmr() is called. */ + tcp_slowtmr(); + } +} + +#if LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG +/** Called when a listen pcb is closed. Iterates one pcb list and removes the + * closed listener pcb from pcb->listener if matching. + */ +static void +tcp_remove_listener(struct tcp_pcb *list, struct tcp_pcb_listen *lpcb) +{ + struct tcp_pcb *pcb; + + LWIP_ASSERT("tcp_remove_listener: invalid listener", lpcb != NULL); + + for (pcb = list; pcb != NULL; pcb = pcb->next) { + if (pcb->listener == lpcb) { + pcb->listener = NULL; + } + } +} +#endif + +/** Called when a listen pcb is closed. Iterates all pcb lists and removes the + * closed listener pcb from pcb->listener if matching. + */ +static void +tcp_listen_closed(struct tcp_pcb *pcb) +{ +#if LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG + size_t i; + LWIP_ASSERT("pcb != NULL", pcb != NULL); + LWIP_ASSERT("pcb->state == LISTEN", pcb->state == LISTEN); + for (i = 1; i < LWIP_ARRAYSIZE(tcp_pcb_lists); i++) { + tcp_remove_listener(*tcp_pcb_lists[i], (struct tcp_pcb_listen *)pcb); + } +#endif + LWIP_UNUSED_ARG(pcb); +} + +#if TCP_LISTEN_BACKLOG +/** @ingroup tcp_raw + * Delay accepting a connection in respect to the listen backlog: + * the number of outstanding connections is increased until + * tcp_backlog_accepted() is called. + * + * ATTENTION: the caller is responsible for calling tcp_backlog_accepted() + * or else the backlog feature will get out of sync! + * + * @param pcb the connection pcb which is not fully accepted yet + */ +void +tcp_backlog_delayed(struct tcp_pcb *pcb) +{ + LWIP_ASSERT("pcb != NULL", pcb != NULL); + LWIP_ASSERT_CORE_LOCKED(); + if ((pcb->flags & TF_BACKLOGPEND) == 0) { + if (pcb->listener != NULL) { + pcb->listener->accepts_pending++; + LWIP_ASSERT("accepts_pending != 0", pcb->listener->accepts_pending != 0); + tcp_set_flags(pcb, TF_BACKLOGPEND); + } + } +} + +/** @ingroup tcp_raw + * A delayed-accept a connection is accepted (or closed/aborted): decreases + * the number of outstanding connections after calling tcp_backlog_delayed(). + * + * ATTENTION: the caller is responsible for calling tcp_backlog_accepted() + * or else the backlog feature will get out of sync! + * + * @param pcb the connection pcb which is now fully accepted (or closed/aborted) + */ +void +tcp_backlog_accepted(struct tcp_pcb *pcb) +{ + LWIP_ASSERT("pcb != NULL", pcb != NULL); + LWIP_ASSERT_CORE_LOCKED(); + if ((pcb->flags & TF_BACKLOGPEND) != 0) { + if (pcb->listener != NULL) { + LWIP_ASSERT("accepts_pending != 0", pcb->listener->accepts_pending != 0); + pcb->listener->accepts_pending--; + tcp_clear_flags(pcb, TF_BACKLOGPEND); + } + } +} +#endif /* TCP_LISTEN_BACKLOG */ + +/** + * Closes the TX side of a connection held by the PCB. + * For tcp_close(), a RST is sent if the application didn't receive all data + * (tcp_recved() not called for all data passed to recv callback). + * + * Listening pcbs are freed and may not be referenced any more. + * Connection pcbs are freed if not yet connected and may not be referenced + * any more. If a connection is established (at least SYN received or in + * a closing state), the connection is closed, and put in a closing state. + * The pcb is then automatically freed in tcp_slowtmr(). It is therefore + * unsafe to reference it. + * + * @param pcb the tcp_pcb to close + * @return ERR_OK if connection has been closed + * another err_t if closing failed and pcb is not freed + */ +static err_t +tcp_close_shutdown(struct tcp_pcb *pcb, u8_t rst_on_unacked_data) +{ + LWIP_ASSERT("tcp_close_shutdown: invalid pcb", pcb != NULL); + + if (rst_on_unacked_data && ((pcb->state == ESTABLISHED) || (pcb->state == CLOSE_WAIT))) { + if ((pcb->refused_data != NULL) || (pcb->rcv_wnd != TCP_WND_MAX(pcb))) { + /* Not all data received by application, send RST to tell the remote + side about this. */ + LWIP_ASSERT("pcb->flags & TF_RXCLOSED", pcb->flags & TF_RXCLOSED); + + /* don't call tcp_abort here: we must not deallocate the pcb since + that might not be expected when calling tcp_close */ + tcp_rst(pcb, pcb->snd_nxt, pcb->rcv_nxt, &pcb->local_ip, &pcb->remote_ip, + pcb->local_port, pcb->remote_port); + + tcp_pcb_purge(pcb); + TCP_RMV_ACTIVE(pcb); + /* Deallocate the pcb since we already sent a RST for it */ + if (tcp_input_pcb == pcb) { + /* prevent using a deallocated pcb: free it from tcp_input later */ + tcp_trigger_input_pcb_close(); + } else { + tcp_free(pcb); + } + return ERR_OK; + } + } + + /* - states which free the pcb are handled here, + - states which send FIN and change state are handled in tcp_close_shutdown_fin() */ + switch (pcb->state) { + case CLOSED: + /* Closing a pcb in the CLOSED state might seem erroneous, + * however, it is in this state once allocated and as yet unused + * and the user needs some way to free it should the need arise. + * Calling tcp_close() with a pcb that has already been closed, (i.e. twice) + * or for a pcb that has been used and then entered the CLOSED state + * is erroneous, but this should never happen as the pcb has in those cases + * been freed, and so any remaining handles are bogus. */ + if (pcb->local_port != 0) { + TCP_RMV(&tcp_bound_pcbs, pcb); + } + tcp_free(pcb); + break; + case LISTEN: + tcp_listen_closed(pcb); + tcp_pcb_remove(&tcp_listen_pcbs.pcbs, pcb); + tcp_free_listen(pcb); + break; + case SYN_SENT: + TCP_PCB_REMOVE_ACTIVE(pcb); + tcp_free(pcb); + MIB2_STATS_INC(mib2.tcpattemptfails); + break; + default: + return tcp_close_shutdown_fin(pcb); + } + return ERR_OK; +} + +static err_t +tcp_close_shutdown_fin(struct tcp_pcb *pcb) +{ + err_t err; + LWIP_ASSERT("pcb != NULL", pcb != NULL); + + switch (pcb->state) { + case SYN_RCVD: + err = tcp_send_fin(pcb); + if (err == ERR_OK) { + tcp_backlog_accepted(pcb); + MIB2_STATS_INC(mib2.tcpattemptfails); + pcb->state = FIN_WAIT_1; + } + break; + case ESTABLISHED: + err = tcp_send_fin(pcb); + if (err == ERR_OK) { + MIB2_STATS_INC(mib2.tcpestabresets); + pcb->state = FIN_WAIT_1; + } + break; + case CLOSE_WAIT: + err = tcp_send_fin(pcb); + if (err == ERR_OK) { + MIB2_STATS_INC(mib2.tcpestabresets); + pcb->state = LAST_ACK; + } + break; + default: + /* Has already been closed, do nothing. */ + return ERR_OK; + } + + if (err == ERR_OK) { + /* To ensure all data has been sent when tcp_close returns, we have + to make sure tcp_output doesn't fail. + Since we don't really have to ensure all data has been sent when tcp_close + returns (unsent data is sent from tcp timer functions, also), we don't care + for the return value of tcp_output for now. */ + tcp_output(pcb); + } else if (err == ERR_MEM) { + /* Mark this pcb for closing. Closing is retried from tcp_tmr. */ + tcp_set_flags(pcb, TF_CLOSEPEND); + /* We have to return ERR_OK from here to indicate to the callers that this + pcb should not be used any more as it will be freed soon via tcp_tmr. + This is OK here since sending FIN does not guarantee a time frime for + actually freeing the pcb, either (it is left in closure states for + remote ACK or timeout) */ + return ERR_OK; + } + return err; +} + +/** + * @ingroup tcp_raw + * Closes the connection held by the PCB. + * + * Listening pcbs are freed and may not be referenced any more. + * Connection pcbs are freed if not yet connected and may not be referenced + * any more. If a connection is established (at least SYN received or in + * a closing state), the connection is closed, and put in a closing state. + * The pcb is then automatically freed in tcp_slowtmr(). It is therefore + * unsafe to reference it (unless an error is returned). + * + * The function may return ERR_MEM if no memory + * was available for closing the connection. If so, the application + * should wait and try again either by using the acknowledgment + * callback or the polling functionality. If the close succeeds, the + * function returns ERR_OK. + * + * @param pcb the tcp_pcb to close + * @return ERR_OK if connection has been closed + * another err_t if closing failed and pcb is not freed + */ +err_t +tcp_close(struct tcp_pcb *pcb) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("tcp_close: invalid pcb", pcb != NULL, return ERR_ARG); + LWIP_DEBUGF(TCP_DEBUG, ("tcp_close: closing in ")); + + tcp_debug_print_state(pcb->state); + + if (pcb->state != LISTEN) { + /* Set a flag not to receive any more data... */ + tcp_set_flags(pcb, TF_RXCLOSED); + } + /* ... and close */ + return tcp_close_shutdown(pcb, 1); +} + +/** + * @ingroup tcp_raw + * Causes all or part of a full-duplex connection of this PCB to be shut down. + * This doesn't deallocate the PCB unless shutting down both sides! + * Shutting down both sides is the same as calling tcp_close, so if it succeds + * (i.e. returns ER_OK), the PCB must not be referenced any more! + * + * @param pcb PCB to shutdown + * @param shut_rx shut down receive side if this is != 0 + * @param shut_tx shut down send side if this is != 0 + * @return ERR_OK if shutdown succeeded (or the PCB has already been shut down) + * another err_t on error. + */ +err_t +tcp_shutdown(struct tcp_pcb *pcb, int shut_rx, int shut_tx) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("tcp_shutdown: invalid pcb", pcb != NULL, return ERR_ARG); + + if (pcb->state == LISTEN) { + return ERR_CONN; + } + if (shut_rx) { + /* shut down the receive side: set a flag not to receive any more data... */ + tcp_set_flags(pcb, TF_RXCLOSED); + if (shut_tx) { + /* shutting down the tx AND rx side is the same as closing for the raw API */ + return tcp_close_shutdown(pcb, 1); + } + /* ... and free buffered data */ + if (pcb->refused_data != NULL) { + pbuf_free(pcb->refused_data); + pcb->refused_data = NULL; + } + } + if (shut_tx) { + /* This can't happen twice since if it succeeds, the pcb's state is changed. + Only close in these states as the others directly deallocate the PCB */ + switch (pcb->state) { + case SYN_RCVD: + case ESTABLISHED: + case CLOSE_WAIT: + return tcp_close_shutdown(pcb, (u8_t)shut_rx); + default: + /* Not (yet?) connected, cannot shutdown the TX side as that would bring us + into CLOSED state, where the PCB is deallocated. */ + return ERR_CONN; + } + } + return ERR_OK; +} + +/** + * Abandons a connection and optionally sends a RST to the remote + * host. Deletes the local protocol control block. This is done when + * a connection is killed because of shortage of memory. + * + * @param pcb the tcp_pcb to abort + * @param reset boolean to indicate whether a reset should be sent + */ +void +tcp_abandon(struct tcp_pcb *pcb, int reset) +{ + u32_t seqno, ackno; +#if LWIP_CALLBACK_API + tcp_err_fn errf; +#endif /* LWIP_CALLBACK_API */ + void *errf_arg; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("tcp_abandon: invalid pcb", pcb != NULL, return); + + /* pcb->state LISTEN not allowed here */ + LWIP_ASSERT("don't call tcp_abort/tcp_abandon for listen-pcbs", + pcb->state != LISTEN); + /* Figure out on which TCP PCB list we are, and remove us. If we + are in an active state, call the receive function associated with + the PCB with a NULL argument, and send an RST to the remote end. */ + if (pcb->state == TIME_WAIT) { + tcp_pcb_remove(&tcp_tw_pcbs, pcb); + tcp_free(pcb); + } else { + int send_rst = 0; + u16_t local_port = 0; + enum tcp_state last_state; + seqno = pcb->snd_nxt; + ackno = pcb->rcv_nxt; +#if LWIP_CALLBACK_API + errf = pcb->errf; +#endif /* LWIP_CALLBACK_API */ + errf_arg = pcb->callback_arg; + if (pcb->state == CLOSED) { + if (pcb->local_port != 0) { + /* bound, not yet opened */ + TCP_RMV(&tcp_bound_pcbs, pcb); + } + } else { + send_rst = reset; + local_port = pcb->local_port; + TCP_PCB_REMOVE_ACTIVE(pcb); + } + if (pcb->unacked != NULL) { + tcp_segs_free(pcb->unacked); + } + if (pcb->unsent != NULL) { + tcp_segs_free(pcb->unsent); + } +#if TCP_QUEUE_OOSEQ + if (pcb->ooseq != NULL) { + tcp_segs_free(pcb->ooseq); + } +#endif /* TCP_QUEUE_OOSEQ */ + tcp_backlog_accepted(pcb); + if (send_rst) { + LWIP_DEBUGF(TCP_RST_DEBUG, ("tcp_abandon: sending RST\n")); + tcp_rst(pcb, seqno, ackno, &pcb->local_ip, &pcb->remote_ip, local_port, pcb->remote_port); + } + last_state = pcb->state; + tcp_free(pcb); + TCP_EVENT_ERR(last_state, errf, errf_arg, ERR_ABRT); + } +} + +/** + * @ingroup tcp_raw + * Aborts the connection by sending a RST (reset) segment to the remote + * host. The pcb is deallocated. This function never fails. + * + * ATTENTION: When calling this from one of the TCP callbacks, make + * sure you always return ERR_ABRT (and never return ERR_ABRT otherwise + * or you will risk accessing deallocated memory or memory leaks! + * + * @param pcb the tcp pcb to abort + */ +void +tcp_abort(struct tcp_pcb *pcb) +{ + tcp_abandon(pcb, 1); +} + +/** + * @ingroup tcp_raw + * Binds the connection to a local port number and IP address. If the + * IP address is not given (i.e., ipaddr == IP_ANY_TYPE), the connection is + * bound to all local IP addresses. + * If another connection is bound to the same port, the function will + * return ERR_USE, otherwise ERR_OK is returned. + * + * @param pcb the tcp_pcb to bind (no check is done whether this pcb is + * already bound!) + * @param ipaddr the local ip address to bind to (use IPx_ADDR_ANY to bind + * to any local address + * @param port the local port to bind to + * @return ERR_USE if the port is already in use + * ERR_VAL if bind failed because the PCB is not in a valid state + * ERR_OK if bound + */ +err_t +tcp_bind(struct tcp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port) +{ + int i; + int max_pcb_list = NUM_TCP_PCB_LISTS; + struct tcp_pcb *cpcb; +#if LWIP_IPV6 && LWIP_IPV6_SCOPES + ip_addr_t zoned_ipaddr; +#endif /* LWIP_IPV6 && LWIP_IPV6_SCOPES */ + + LWIP_ASSERT_CORE_LOCKED(); + +#if LWIP_IPV4 + /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */ + if (ipaddr == NULL) { + ipaddr = IP4_ADDR_ANY; + } +#else /* LWIP_IPV4 */ + LWIP_ERROR("tcp_bind: invalid ipaddr", ipaddr != NULL, return ERR_ARG); +#endif /* LWIP_IPV4 */ + + LWIP_ERROR("tcp_bind: invalid pcb", pcb != NULL, return ERR_ARG); + + LWIP_ERROR("tcp_bind: can only bind in state CLOSED", pcb->state == CLOSED, return ERR_VAL); + +#if SO_REUSE + /* Unless the REUSEADDR flag is set, + we have to check the pcbs in TIME-WAIT state, also. + We do not dump TIME_WAIT pcb's; they can still be matched by incoming + packets using both local and remote IP addresses and ports to distinguish. + */ + if (ip_get_option(pcb, SOF_REUSEADDR)) { + max_pcb_list = NUM_TCP_PCB_LISTS_NO_TIME_WAIT; + } +#endif /* SO_REUSE */ + +#if LWIP_IPV6 && LWIP_IPV6_SCOPES + /* If the given IP address should have a zone but doesn't, assign one now. + * This is legacy support: scope-aware callers should always provide properly + * zoned source addresses. Do the zone selection before the address-in-use + * check below; as such we have to make a temporary copy of the address. */ + if (IP_IS_V6(ipaddr) && ip6_addr_lacks_zone(ip_2_ip6(ipaddr), IP6_UNICAST)) { + ip_addr_copy(zoned_ipaddr, *ipaddr); + ip6_addr_select_zone(ip_2_ip6(&zoned_ipaddr), ip_2_ip6(&zoned_ipaddr)); + ipaddr = &zoned_ipaddr; + } +#endif /* LWIP_IPV6 && LWIP_IPV6_SCOPES */ + + if (port == 0) { + port = tcp_new_port(); + if (port == 0) { + return ERR_BUF; + } + } else { + /* Check if the address already is in use (on all lists) */ + for (i = 0; i < max_pcb_list; i++) { + for (cpcb = *tcp_pcb_lists[i]; cpcb != NULL; cpcb = cpcb->next) { + if (cpcb->local_port == port) { +#if SO_REUSE + /* Omit checking for the same port if both pcbs have REUSEADDR set. + For SO_REUSEADDR, the duplicate-check for a 5-tuple is done in + tcp_connect. */ + if (!ip_get_option(pcb, SOF_REUSEADDR) || + !ip_get_option(cpcb, SOF_REUSEADDR)) +#endif /* SO_REUSE */ + { + /* @todo: check accept_any_ip_version */ + if ((IP_IS_V6(ipaddr) == IP_IS_V6_VAL(cpcb->local_ip)) && + (ip_addr_isany(&cpcb->local_ip) || + ip_addr_isany(ipaddr) || + ip_addr_cmp(&cpcb->local_ip, ipaddr))) { + return ERR_USE; + } + } + } + } + } + } + + if (!ip_addr_isany(ipaddr) +#if LWIP_IPV4 && LWIP_IPV6 + || (IP_GET_TYPE(ipaddr) != IP_GET_TYPE(&pcb->local_ip)) +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + ) { + ip_addr_set(&pcb->local_ip, ipaddr); + } + pcb->local_port = port; + TCP_REG(&tcp_bound_pcbs, pcb); + LWIP_DEBUGF(TCP_DEBUG, ("tcp_bind: bind to port %"U16_F"\n", port)); + return ERR_OK; +} + +/** + * @ingroup tcp_raw + * Binds the connection to a netif and IP address. + * After calling this function, all packets received via this PCB + * are guaranteed to have come in via the specified netif, and all + * outgoing packets will go out via the specified netif. + * + * @param pcb the tcp_pcb to bind. + * @param netif the netif to bind to. Can be NULL. + */ +void +tcp_bind_netif(struct tcp_pcb *pcb, const struct netif *netif) +{ + LWIP_ASSERT_CORE_LOCKED(); + if (netif != NULL) { + pcb->netif_idx = netif_get_index(netif); + } else { + pcb->netif_idx = NETIF_NO_INDEX; + } +} + +#if LWIP_CALLBACK_API +/** + * Default accept callback if no accept callback is specified by the user. + */ +static err_t +tcp_accept_null(void *arg, struct tcp_pcb *pcb, err_t err) +{ + LWIP_UNUSED_ARG(arg); + LWIP_UNUSED_ARG(err); + + LWIP_ASSERT("tcp_accept_null: invalid pcb", pcb != NULL); + + tcp_abort(pcb); + + return ERR_ABRT; +} +#endif /* LWIP_CALLBACK_API */ + +/** + * @ingroup tcp_raw + * Set the state of the connection to be LISTEN, which means that it + * is able to accept incoming connections. The protocol control block + * is reallocated in order to consume less memory. Setting the + * connection to LISTEN is an irreversible process. + * When an incoming connection is accepted, the function specified with + * the tcp_accept() function will be called. The pcb has to be bound + * to a local port with the tcp_bind() function. + * + * The tcp_listen() function returns a new connection identifier, and + * the one passed as an argument to the function will be + * deallocated. The reason for this behavior is that less memory is + * needed for a connection that is listening, so tcp_listen() will + * reclaim the memory needed for the original connection and allocate a + * new smaller memory block for the listening connection. + * + * tcp_listen() may return NULL if no memory was available for the + * listening connection. If so, the memory associated with the pcb + * passed as an argument to tcp_listen() will not be deallocated. + * + * The backlog limits the number of outstanding connections + * in the listen queue to the value specified by the backlog argument. + * To use it, your need to set TCP_LISTEN_BACKLOG=1 in your lwipopts.h. + * + * @param pcb the original tcp_pcb + * @param backlog the incoming connections queue limit + * @return tcp_pcb used for listening, consumes less memory. + * + * @note The original tcp_pcb is freed. This function therefore has to be + * called like this: + * tpcb = tcp_listen_with_backlog(tpcb, backlog); + */ +struct tcp_pcb * +tcp_listen_with_backlog(struct tcp_pcb *pcb, u8_t backlog) +{ + LWIP_ASSERT_CORE_LOCKED(); + return tcp_listen_with_backlog_and_err(pcb, backlog, NULL); +} + +/** + * @ingroup tcp_raw + * Set the state of the connection to be LISTEN, which means that it + * is able to accept incoming connections. The protocol control block + * is reallocated in order to consume less memory. Setting the + * connection to LISTEN is an irreversible process. + * + * @param pcb the original tcp_pcb + * @param backlog the incoming connections queue limit + * @param err when NULL is returned, this contains the error reason + * @return tcp_pcb used for listening, consumes less memory. + * + * @note The original tcp_pcb is freed. This function therefore has to be + * called like this: + * tpcb = tcp_listen_with_backlog_and_err(tpcb, backlog, &err); + */ +struct tcp_pcb * +tcp_listen_with_backlog_and_err(struct tcp_pcb *pcb, u8_t backlog, err_t *err) +{ + struct tcp_pcb_listen *lpcb = NULL; + err_t res; + + LWIP_UNUSED_ARG(backlog); + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("tcp_listen_with_backlog_and_err: invalid pcb", pcb != NULL, res = ERR_ARG; goto done); + LWIP_ERROR("tcp_listen_with_backlog_and_err: pcb already connected", pcb->state == CLOSED, res = ERR_CLSD; goto done); + + /* already listening? */ + if (pcb->state == LISTEN) { + lpcb = (struct tcp_pcb_listen *)pcb; + res = ERR_ALREADY; + goto done; + } +#if SO_REUSE + if (ip_get_option(pcb, SOF_REUSEADDR)) { + /* Since SOF_REUSEADDR allows reusing a local address before the pcb's usage + is declared (listen-/connection-pcb), we have to make sure now that + this port is only used once for every local IP. */ + for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) { + if ((lpcb->local_port == pcb->local_port) && + ip_addr_cmp(&lpcb->local_ip, &pcb->local_ip)) { + /* this address/port is already used */ + lpcb = NULL; + res = ERR_USE; + goto done; + } + } + } +#endif /* SO_REUSE */ + lpcb = (struct tcp_pcb_listen *)memp_malloc(MEMP_TCP_PCB_LISTEN); + if (lpcb == NULL) { + res = ERR_MEM; + goto done; + } + lpcb->callback_arg = pcb->callback_arg; + lpcb->local_port = pcb->local_port; + lpcb->state = LISTEN; + lpcb->prio = pcb->prio; + lpcb->so_options = pcb->so_options; + lpcb->netif_idx = NETIF_NO_INDEX; + lpcb->ttl = pcb->ttl; + lpcb->tos = pcb->tos; +#if LWIP_IPV4 && LWIP_IPV6 + IP_SET_TYPE_VAL(lpcb->remote_ip, pcb->local_ip.type); +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + ip_addr_copy(lpcb->local_ip, pcb->local_ip); + if (pcb->local_port != 0) { + TCP_RMV(&tcp_bound_pcbs, pcb); + } +#if LWIP_TCP_PCB_NUM_EXT_ARGS + /* copy over ext_args to listening pcb */ + memcpy(&lpcb->ext_args, &pcb->ext_args, sizeof(pcb->ext_args)); +#endif + tcp_free(pcb); +#if LWIP_CALLBACK_API + lpcb->accept = tcp_accept_null; +#endif /* LWIP_CALLBACK_API */ +#if TCP_LISTEN_BACKLOG + lpcb->accepts_pending = 0; + tcp_backlog_set(lpcb, backlog); +#endif /* TCP_LISTEN_BACKLOG */ + TCP_REG(&tcp_listen_pcbs.pcbs, (struct tcp_pcb *)lpcb); + res = ERR_OK; +done: + if (err != NULL) { + *err = res; + } + return (struct tcp_pcb *)lpcb; +} + +/** + * Update the state that tracks the available window space to advertise. + * + * Returns how much extra window would be advertised if we sent an + * update now. + */ +u32_t +tcp_update_rcv_ann_wnd(struct tcp_pcb *pcb) +{ + u32_t new_right_edge; + + LWIP_ASSERT("tcp_update_rcv_ann_wnd: invalid pcb", pcb != NULL); + new_right_edge = pcb->rcv_nxt + pcb->rcv_wnd; + + if (TCP_SEQ_GEQ(new_right_edge, pcb->rcv_ann_right_edge + LWIP_MIN((TCP_WND / 2), pcb->mss))) { + /* we can advertise more window */ + pcb->rcv_ann_wnd = pcb->rcv_wnd; + return new_right_edge - pcb->rcv_ann_right_edge; + } else { + if (TCP_SEQ_GT(pcb->rcv_nxt, pcb->rcv_ann_right_edge)) { + /* Can happen due to other end sending out of advertised window, + * but within actual available (but not yet advertised) window */ + pcb->rcv_ann_wnd = 0; + } else { + /* keep the right edge of window constant */ + u32_t new_rcv_ann_wnd = pcb->rcv_ann_right_edge - pcb->rcv_nxt; +#if !LWIP_WND_SCALE + LWIP_ASSERT("new_rcv_ann_wnd <= 0xffff", new_rcv_ann_wnd <= 0xffff); +#endif + pcb->rcv_ann_wnd = (tcpwnd_size_t)new_rcv_ann_wnd; + } + return 0; + } +} + +/** + * @ingroup tcp_raw + * This function should be called by the application when it has + * processed the data. The purpose is to advertise a larger window + * when the data has been processed. + * + * @param pcb the tcp_pcb for which data is read + * @param len the amount of bytes that have been read by the application + */ +void +tcp_recved(struct tcp_pcb *pcb, u16_t len) +{ + u32_t wnd_inflation; + tcpwnd_size_t rcv_wnd; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("tcp_recved: invalid pcb", pcb != NULL, return); + + /* pcb->state LISTEN not allowed here */ + LWIP_ASSERT("don't call tcp_recved for listen-pcbs", + pcb->state != LISTEN); + + rcv_wnd = (tcpwnd_size_t)(pcb->rcv_wnd + len); + if ((rcv_wnd > TCP_WND_MAX(pcb)) || (rcv_wnd < pcb->rcv_wnd)) { + /* window got too big or tcpwnd_size_t overflow */ + LWIP_DEBUGF(TCP_DEBUG, ("tcp_recved: window got too big or tcpwnd_size_t overflow\n")); + pcb->rcv_wnd = TCP_WND_MAX(pcb); + } else { + pcb->rcv_wnd = rcv_wnd; + } + + wnd_inflation = tcp_update_rcv_ann_wnd(pcb); + + /* If the change in the right edge of window is significant (default + * watermark is TCP_WND/4), then send an explicit update now. + * Otherwise wait for a packet to be sent in the normal course of + * events (or more window to be available later) */ + if (wnd_inflation >= TCP_WND_UPDATE_THRESHOLD) { + tcp_ack_now(pcb); + tcp_output(pcb); + } + + LWIP_DEBUGF(TCP_DEBUG, ("tcp_recved: received %"U16_F" bytes, wnd %"TCPWNDSIZE_F" (%"TCPWNDSIZE_F").\n", + len, pcb->rcv_wnd, (u16_t)(TCP_WND_MAX(pcb) - pcb->rcv_wnd))); +} + +/** + * Allocate a new local TCP port. + * + * @return a new (free) local TCP port number + */ +static u16_t +tcp_new_port(void) +{ + u8_t i; + u16_t n = 0; + struct tcp_pcb *pcb; + +again: + tcp_port++; + if (tcp_port == TCP_LOCAL_PORT_RANGE_END) { + tcp_port = TCP_LOCAL_PORT_RANGE_START; + } + /* Check all PCB lists. */ + for (i = 0; i < NUM_TCP_PCB_LISTS; i++) { + for (pcb = *tcp_pcb_lists[i]; pcb != NULL; pcb = pcb->next) { + if (pcb->local_port == tcp_port) { + n++; + if (n > (TCP_LOCAL_PORT_RANGE_END - TCP_LOCAL_PORT_RANGE_START)) { + return 0; + } + goto again; + } + } + } + return tcp_port; +} + +/** + * @ingroup tcp_raw + * Connects to another host. The function given as the "connected" + * argument will be called when the connection has been established. + * Sets up the pcb to connect to the remote host and sends the + * initial SYN segment which opens the connection. + * + * The tcp_connect() function returns immediately; it does not wait for + * the connection to be properly setup. Instead, it will call the + * function specified as the fourth argument (the "connected" argument) + * when the connection is established. If the connection could not be + * properly established, either because the other host refused the + * connection or because the other host didn't answer, the "err" + * callback function of this pcb (registered with tcp_err, see below) + * will be called. + * + * The tcp_connect() function can return ERR_MEM if no memory is + * available for enqueueing the SYN segment. If the SYN indeed was + * enqueued successfully, the tcp_connect() function returns ERR_OK. + * + * @param pcb the tcp_pcb used to establish the connection + * @param ipaddr the remote ip address to connect to + * @param port the remote tcp port to connect to + * @param connected callback function to call when connected (on error, + the err calback will be called) + * @return ERR_VAL if invalid arguments are given + * ERR_OK if connect request has been sent + * other err_t values if connect request couldn't be sent + */ +err_t +tcp_connect(struct tcp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port, + tcp_connected_fn connected) +{ + struct netif *netif = NULL; + err_t ret; + u32_t iss; + u16_t old_local_port; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("tcp_connect: invalid pcb", pcb != NULL, return ERR_ARG); + LWIP_ERROR("tcp_connect: invalid ipaddr", ipaddr != NULL, return ERR_ARG); + + LWIP_ERROR("tcp_connect: can only connect from state CLOSED", pcb->state == CLOSED, return ERR_ISCONN); + + LWIP_DEBUGF(TCP_DEBUG, ("tcp_connect to port %"U16_F"\n", port)); + ip_addr_set(&pcb->remote_ip, ipaddr); + pcb->remote_port = port; + + if (pcb->netif_idx != NETIF_NO_INDEX) { + netif = netif_get_by_index(pcb->netif_idx); + } else { + /* check if we have a route to the remote host */ + netif = ip_route(&pcb->local_ip, &pcb->remote_ip); + } + if (netif == NULL) { + /* Don't even try to send a SYN packet if we have no route since that will fail. */ + return ERR_RTE; + } + + /* check if local IP has been assigned to pcb, if not, get one */ + if (ip_addr_isany(&pcb->local_ip)) { + const ip_addr_t *local_ip = ip_netif_get_local_ip(netif, ipaddr); + if (local_ip == NULL) { + return ERR_RTE; + } + ip_addr_copy(pcb->local_ip, *local_ip); + } + +#if LWIP_IPV6 && LWIP_IPV6_SCOPES + /* If the given IP address should have a zone but doesn't, assign one now. + * Given that we already have the target netif, this is easy and cheap. */ + if (IP_IS_V6(&pcb->remote_ip) && + ip6_addr_lacks_zone(ip_2_ip6(&pcb->remote_ip), IP6_UNICAST)) { + ip6_addr_assign_zone(ip_2_ip6(&pcb->remote_ip), IP6_UNICAST, netif); + } +#endif /* LWIP_IPV6 && LWIP_IPV6_SCOPES */ + + old_local_port = pcb->local_port; + if (pcb->local_port == 0) { + pcb->local_port = tcp_new_port(); + if (pcb->local_port == 0) { + return ERR_BUF; + } + } else { +#if SO_REUSE + if (ip_get_option(pcb, SOF_REUSEADDR)) { + /* Since SOF_REUSEADDR allows reusing a local address, we have to make sure + now that the 5-tuple is unique. */ + struct tcp_pcb *cpcb; + int i; + /* Don't check listen- and bound-PCBs, check active- and TIME-WAIT PCBs. */ + for (i = 2; i < NUM_TCP_PCB_LISTS; i++) { + for (cpcb = *tcp_pcb_lists[i]; cpcb != NULL; cpcb = cpcb->next) { + if ((cpcb->local_port == pcb->local_port) && + (cpcb->remote_port == port) && + ip_addr_cmp(&cpcb->local_ip, &pcb->local_ip) && + ip_addr_cmp(&cpcb->remote_ip, ipaddr)) { + /* linux returns EISCONN here, but ERR_USE should be OK for us */ + return ERR_USE; + } + } + } + } +#endif /* SO_REUSE */ + } + + iss = tcp_next_iss(pcb); + pcb->rcv_nxt = 0; + pcb->snd_nxt = iss; + pcb->lastack = iss - 1; + pcb->snd_wl2 = iss - 1; + pcb->snd_lbb = iss - 1; + /* Start with a window that does not need scaling. When window scaling is + enabled and used, the window is enlarged when both sides agree on scaling. */ + pcb->rcv_wnd = pcb->rcv_ann_wnd = TCPWND_MIN16(TCP_WND); + pcb->rcv_ann_right_edge = pcb->rcv_nxt; + pcb->snd_wnd = TCP_WND; + /* As initial send MSS, we use TCP_MSS but limit it to 536. + The send MSS is updated when an MSS option is received. */ + pcb->mss = INITIAL_MSS; +#if TCP_CALCULATE_EFF_SEND_MSS + pcb->mss = tcp_eff_send_mss_netif(pcb->mss, netif, &pcb->remote_ip); +#endif /* TCP_CALCULATE_EFF_SEND_MSS */ + pcb->cwnd = 1; +#if LWIP_CALLBACK_API + pcb->connected = connected; +#else /* LWIP_CALLBACK_API */ + LWIP_UNUSED_ARG(connected); +#endif /* LWIP_CALLBACK_API */ + + /* Send a SYN together with the MSS option. */ + ret = tcp_enqueue_flags(pcb, TCP_SYN); + if (ret == ERR_OK) { + /* SYN segment was enqueued, changed the pcbs state now */ + pcb->state = SYN_SENT; + if (old_local_port != 0) { + TCP_RMV(&tcp_bound_pcbs, pcb); + } + TCP_REG_ACTIVE(pcb); + MIB2_STATS_INC(mib2.tcpactiveopens); + + tcp_output(pcb); + } + return ret; +} + +/** + * Called every 500 ms and implements the retransmission timer and the timer that + * removes PCBs that have been in TIME-WAIT for enough time. It also increments + * various timers such as the inactivity timer in each PCB. + * + * Automatically called from tcp_tmr(). + */ +void +tcp_slowtmr(void) +{ + struct tcp_pcb *pcb, *prev; + tcpwnd_size_t eff_wnd; + u8_t pcb_remove; /* flag if a PCB should be removed */ + u8_t pcb_reset; /* flag if a RST should be sent when removing */ + err_t err; + + err = ERR_OK; + + ++tcp_ticks; + ++tcp_timer_ctr; + +tcp_slowtmr_start: + /* Steps through all of the active PCBs. */ + prev = NULL; + pcb = tcp_active_pcbs; + if (pcb == NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: no active pcbs\n")); + } + while (pcb != NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: processing active pcb\n")); + LWIP_ASSERT("tcp_slowtmr: active pcb->state != CLOSED\n", pcb->state != CLOSED); + LWIP_ASSERT("tcp_slowtmr: active pcb->state != LISTEN\n", pcb->state != LISTEN); + LWIP_ASSERT("tcp_slowtmr: active pcb->state != TIME-WAIT\n", pcb->state != TIME_WAIT); + if (pcb->last_timer == tcp_timer_ctr) { + /* skip this pcb, we have already processed it */ + prev = pcb; + pcb = pcb->next; + continue; + } + pcb->last_timer = tcp_timer_ctr; + + pcb_remove = 0; + pcb_reset = 0; + + if (pcb->state == SYN_SENT && pcb->nrtx >= TCP_SYNMAXRTX) { + ++pcb_remove; + LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: max SYN retries reached\n")); + } else if (pcb->nrtx >= TCP_MAXRTX) { + ++pcb_remove; + LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: max DATA retries reached\n")); + } else { + if (pcb->persist_backoff > 0) { + LWIP_ASSERT("tcp_slowtimr: persist ticking with in-flight data", pcb->unacked == NULL); + LWIP_ASSERT("tcp_slowtimr: persist ticking with empty send buffer", pcb->unsent != NULL); + if (pcb->persist_probe >= TCP_MAXRTX) { + ++pcb_remove; /* max probes reached */ + } else { + u8_t backoff_cnt = tcp_persist_backoff[pcb->persist_backoff - 1]; + if (pcb->persist_cnt < backoff_cnt) { + pcb->persist_cnt++; + } + if (pcb->persist_cnt >= backoff_cnt) { + int next_slot = 1; /* increment timer to next slot */ + /* If snd_wnd is zero, send 1 byte probes */ + if (pcb->snd_wnd == 0) { + if (tcp_zero_window_probe(pcb) != ERR_OK) { + next_slot = 0; /* try probe again with current slot */ + } + /* snd_wnd not fully closed, split unsent head and fill window */ + } else { + if (tcp_split_unsent_seg(pcb, (u16_t)pcb->snd_wnd) == ERR_OK) { + if (tcp_output(pcb) == ERR_OK) { + /* sending will cancel persist timer, else retry with current slot */ + next_slot = 0; + } + } + } + if (next_slot) { + pcb->persist_cnt = 0; + if (pcb->persist_backoff < sizeof(tcp_persist_backoff)) { + pcb->persist_backoff++; + } + } + } + } + } else { + /* Increase the retransmission timer if it is running */ + if ((pcb->rtime >= 0) && (pcb->rtime < 0x7FFF)) { + ++pcb->rtime; + } + + if (pcb->rtime >= pcb->rto) { + /* Time for a retransmission. */ + LWIP_DEBUGF(TCP_RTO_DEBUG, ("tcp_slowtmr: rtime %"S16_F + " pcb->rto %"S16_F"\n", + pcb->rtime, pcb->rto)); + /* If prepare phase fails but we have unsent data but no unacked data, + still execute the backoff calculations below, as this means we somehow + failed to send segment. */ + if ((tcp_rexmit_rto_prepare(pcb) == ERR_OK) || ((pcb->unacked == NULL) && (pcb->unsent != NULL))) { + /* Double retransmission time-out unless we are trying to + * connect to somebody (i.e., we are in SYN_SENT). */ + if (pcb->state != SYN_SENT) { + u8_t backoff_idx = LWIP_MIN(pcb->nrtx, sizeof(tcp_backoff) - 1); + int calc_rto = ((pcb->sa >> 3) + pcb->sv) << tcp_backoff[backoff_idx]; + pcb->rto = (s16_t)LWIP_MIN(calc_rto, 0x7FFF); + } + + /* Reset the retransmission timer. */ + pcb->rtime = 0; + + /* Reduce congestion window and ssthresh. */ + eff_wnd = LWIP_MIN(pcb->cwnd, pcb->snd_wnd); + pcb->ssthresh = eff_wnd >> 1; + if (pcb->ssthresh < (tcpwnd_size_t)(pcb->mss << 1)) { + pcb->ssthresh = (tcpwnd_size_t)(pcb->mss << 1); + } + pcb->cwnd = pcb->mss; + LWIP_DEBUGF(TCP_CWND_DEBUG, ("tcp_slowtmr: cwnd %"TCPWNDSIZE_F + " ssthresh %"TCPWNDSIZE_F"\n", + pcb->cwnd, pcb->ssthresh)); + pcb->bytes_acked = 0; + + /* The following needs to be called AFTER cwnd is set to one + mss - STJ */ + tcp_rexmit_rto_commit(pcb); + } + } + } + } + /* Check if this PCB has stayed too long in FIN-WAIT-2 */ + if (pcb->state == FIN_WAIT_2) { + /* If this PCB is in FIN_WAIT_2 because of SHUT_WR don't let it time out. */ + if (pcb->flags & TF_RXCLOSED) { + /* PCB was fully closed (either through close() or SHUT_RDWR): + normal FIN-WAIT timeout handling. */ + if ((u32_t)(tcp_ticks - pcb->tmr) > + TCP_FIN_WAIT_TIMEOUT / TCP_SLOW_INTERVAL) { + ++pcb_remove; + LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: removing pcb stuck in FIN-WAIT-2\n")); + } + } + } + + /* Check if KEEPALIVE should be sent */ + if (ip_get_option(pcb, SOF_KEEPALIVE) && + ((pcb->state == ESTABLISHED) || + (pcb->state == CLOSE_WAIT))) { + if ((u32_t)(tcp_ticks - pcb->tmr) > + (pcb->keep_idle + TCP_KEEP_DUR(pcb)) / TCP_SLOW_INTERVAL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: KEEPALIVE timeout. Aborting connection to ")); + ip_addr_debug_print_val(TCP_DEBUG, pcb->remote_ip); + LWIP_DEBUGF(TCP_DEBUG, ("\n")); + + ++pcb_remove; + ++pcb_reset; + } else if ((u32_t)(tcp_ticks - pcb->tmr) > + (pcb->keep_idle + pcb->keep_cnt_sent * TCP_KEEP_INTVL(pcb)) + / TCP_SLOW_INTERVAL) { + err = tcp_keepalive(pcb); + if (err == ERR_OK) { + pcb->keep_cnt_sent++; + } + } + } + + /* If this PCB has queued out of sequence data, but has been + inactive for too long, will drop the data (it will eventually + be retransmitted). */ +#if TCP_QUEUE_OOSEQ + if (pcb->ooseq != NULL && + (tcp_ticks - pcb->tmr >= (u32_t)pcb->rto * TCP_OOSEQ_TIMEOUT)) { + LWIP_DEBUGF(TCP_CWND_DEBUG, ("tcp_slowtmr: dropping OOSEQ queued data\n")); + tcp_free_ooseq(pcb); + } +#endif /* TCP_QUEUE_OOSEQ */ + + /* Check if this PCB has stayed too long in SYN-RCVD */ + if (pcb->state == SYN_RCVD) { + if ((u32_t)(tcp_ticks - pcb->tmr) > + TCP_SYN_RCVD_TIMEOUT / TCP_SLOW_INTERVAL) { + ++pcb_remove; + LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: removing pcb stuck in SYN-RCVD\n")); + } + } + + /* Check if this PCB has stayed too long in LAST-ACK */ + if (pcb->state == LAST_ACK) { + if ((u32_t)(tcp_ticks - pcb->tmr) > 2 * TCP_MSL / TCP_SLOW_INTERVAL) { + ++pcb_remove; + LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: removing pcb stuck in LAST-ACK\n")); + } + } + + /* If the PCB should be removed, do it. */ + if (pcb_remove) { + struct tcp_pcb *pcb2; +#if LWIP_CALLBACK_API + tcp_err_fn err_fn = pcb->errf; +#endif /* LWIP_CALLBACK_API */ + void *err_arg; + enum tcp_state last_state; + tcp_pcb_purge(pcb); + /* Remove PCB from tcp_active_pcbs list. */ + if (prev != NULL) { + LWIP_ASSERT("tcp_slowtmr: middle tcp != tcp_active_pcbs", pcb != tcp_active_pcbs); + prev->next = pcb->next; + } else { + /* This PCB was the first. */ + LWIP_ASSERT("tcp_slowtmr: first pcb == tcp_active_pcbs", tcp_active_pcbs == pcb); + tcp_active_pcbs = pcb->next; + } + + if (pcb_reset) { + tcp_rst(pcb, pcb->snd_nxt, pcb->rcv_nxt, &pcb->local_ip, &pcb->remote_ip, + pcb->local_port, pcb->remote_port); + } + + err_arg = pcb->callback_arg; + last_state = pcb->state; + pcb2 = pcb; + pcb = pcb->next; + tcp_free(pcb2); + + tcp_active_pcbs_changed = 0; + TCP_EVENT_ERR(last_state, err_fn, err_arg, ERR_ABRT); + if (tcp_active_pcbs_changed) { + goto tcp_slowtmr_start; + } + } else { + /* get the 'next' element now and work with 'prev' below (in case of abort) */ + prev = pcb; + pcb = pcb->next; + + /* We check if we should poll the connection. */ + ++prev->polltmr; + if (prev->polltmr >= prev->pollinterval) { + prev->polltmr = 0; + LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: polling application\n")); + tcp_active_pcbs_changed = 0; + TCP_EVENT_POLL(prev, err); + if (tcp_active_pcbs_changed) { + goto tcp_slowtmr_start; + } + /* if err == ERR_ABRT, 'prev' is already deallocated */ + if (err == ERR_OK) { + tcp_output(prev); + } + } + } + } + + + /* Steps through all of the TIME-WAIT PCBs. */ + prev = NULL; + pcb = tcp_tw_pcbs; + while (pcb != NULL) { + LWIP_ASSERT("tcp_slowtmr: TIME-WAIT pcb->state == TIME-WAIT", pcb->state == TIME_WAIT); + pcb_remove = 0; + + /* Check if this PCB has stayed long enough in TIME-WAIT */ + if ((u32_t)(tcp_ticks - pcb->tmr) > 2 * TCP_MSL / TCP_SLOW_INTERVAL) { + ++pcb_remove; + } + + /* If the PCB should be removed, do it. */ + if (pcb_remove) { + struct tcp_pcb *pcb2; + tcp_pcb_purge(pcb); + /* Remove PCB from tcp_tw_pcbs list. */ + if (prev != NULL) { + LWIP_ASSERT("tcp_slowtmr: middle tcp != tcp_tw_pcbs", pcb != tcp_tw_pcbs); + prev->next = pcb->next; + } else { + /* This PCB was the first. */ + LWIP_ASSERT("tcp_slowtmr: first pcb == tcp_tw_pcbs", tcp_tw_pcbs == pcb); + tcp_tw_pcbs = pcb->next; + } + pcb2 = pcb; + pcb = pcb->next; + tcp_free(pcb2); + } else { + prev = pcb; + pcb = pcb->next; + } + } +} + +/** + * Is called every TCP_FAST_INTERVAL (250 ms) and process data previously + * "refused" by upper layer (application) and sends delayed ACKs or pending FINs. + * + * Automatically called from tcp_tmr(). + */ +void +tcp_fasttmr(void) +{ + struct tcp_pcb *pcb; + + ++tcp_timer_ctr; + +tcp_fasttmr_start: + pcb = tcp_active_pcbs; + + while (pcb != NULL) { + if (pcb->last_timer != tcp_timer_ctr) { + struct tcp_pcb *next; + pcb->last_timer = tcp_timer_ctr; + /* send delayed ACKs */ + if (pcb->flags & TF_ACK_DELAY) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_fasttmr: delayed ACK\n")); + tcp_ack_now(pcb); + tcp_output(pcb); + tcp_clear_flags(pcb, TF_ACK_DELAY | TF_ACK_NOW); + } + /* send pending FIN */ + if (pcb->flags & TF_CLOSEPEND) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_fasttmr: pending FIN\n")); + tcp_clear_flags(pcb, TF_CLOSEPEND); + tcp_close_shutdown_fin(pcb); + } + + next = pcb->next; + + /* If there is data which was previously "refused" by upper layer */ + if (pcb->refused_data != NULL) { + tcp_active_pcbs_changed = 0; + tcp_process_refused_data(pcb); + if (tcp_active_pcbs_changed) { + /* application callback has changed the pcb list: restart the loop */ + goto tcp_fasttmr_start; + } + } + pcb = next; + } else { + pcb = pcb->next; + } + } +} + +/** Call tcp_output for all active pcbs that have TF_NAGLEMEMERR set */ +void +tcp_txnow(void) +{ + struct tcp_pcb *pcb; + + for (pcb = tcp_active_pcbs; pcb != NULL; pcb = pcb->next) { + if (pcb->flags & TF_NAGLEMEMERR) { + tcp_output(pcb); + } + } +} + +/** Pass pcb->refused_data to the recv callback */ +err_t +tcp_process_refused_data(struct tcp_pcb *pcb) +{ +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + struct pbuf *rest; +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + + LWIP_ERROR("tcp_process_refused_data: invalid pcb", pcb != NULL, return ERR_ARG); + +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + while (pcb->refused_data != NULL) +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + { + err_t err; + u8_t refused_flags = pcb->refused_data->flags; + /* set pcb->refused_data to NULL in case the callback frees it and then + closes the pcb */ + struct pbuf *refused_data = pcb->refused_data; +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + pbuf_split_64k(refused_data, &rest); + pcb->refused_data = rest; +#else /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + pcb->refused_data = NULL; +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + /* Notify again application with data previously received. */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: notify kept packet\n")); + TCP_EVENT_RECV(pcb, refused_data, ERR_OK, err); + if (err == ERR_OK) { + /* did refused_data include a FIN? */ + if ((refused_flags & PBUF_FLAG_TCP_FIN) +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + && (rest == NULL) +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + ) { + /* correct rcv_wnd as the application won't call tcp_recved() + for the FIN's seqno */ + if (pcb->rcv_wnd != TCP_WND_MAX(pcb)) { + pcb->rcv_wnd++; + } + TCP_EVENT_CLOSED(pcb, err); + if (err == ERR_ABRT) { + return ERR_ABRT; + } + } + } else if (err == ERR_ABRT) { + /* if err == ERR_ABRT, 'pcb' is already deallocated */ + /* Drop incoming packets because pcb is "full" (only if the incoming + segment contains data). */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: drop incoming packets, because pcb is \"full\"\n")); + return ERR_ABRT; + } else { + /* data is still refused, pbuf is still valid (go on for ACK-only packets) */ +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + if (rest != NULL) { + pbuf_cat(refused_data, rest); + } +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + pcb->refused_data = refused_data; + return ERR_INPROGRESS; + } + } + return ERR_OK; +} + +/** + * Deallocates a list of TCP segments (tcp_seg structures). + * + * @param seg tcp_seg list of TCP segments to free + */ +void +tcp_segs_free(struct tcp_seg *seg) +{ + while (seg != NULL) { + struct tcp_seg *next = seg->next; + tcp_seg_free(seg); + seg = next; + } +} + +/** + * Frees a TCP segment (tcp_seg structure). + * + * @param seg single tcp_seg to free + */ +void +tcp_seg_free(struct tcp_seg *seg) +{ + if (seg != NULL) { + if (seg->p != NULL) { + pbuf_free(seg->p); +#if TCP_DEBUG + seg->p = NULL; +#endif /* TCP_DEBUG */ + } + memp_free(MEMP_TCP_SEG, seg); + } +} + +/** + * @ingroup tcp + * Sets the priority of a connection. + * + * @param pcb the tcp_pcb to manipulate + * @param prio new priority + */ +void +tcp_setprio(struct tcp_pcb *pcb, u8_t prio) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("tcp_setprio: invalid pcb", pcb != NULL, return); + + pcb->prio = prio; +} + +#if TCP_QUEUE_OOSEQ +/** + * Returns a copy of the given TCP segment. + * The pbuf and data are not copied, only the pointers + * + * @param seg the old tcp_seg + * @return a copy of seg + */ +struct tcp_seg * +tcp_seg_copy(struct tcp_seg *seg) +{ + struct tcp_seg *cseg; + + LWIP_ASSERT("tcp_seg_copy: invalid seg", seg != NULL); + + cseg = (struct tcp_seg *)memp_malloc(MEMP_TCP_SEG); + if (cseg == NULL) { + return NULL; + } + SMEMCPY((u8_t *)cseg, (const u8_t *)seg, sizeof(struct tcp_seg)); + pbuf_ref(cseg->p); + return cseg; +} +#endif /* TCP_QUEUE_OOSEQ */ + +#if LWIP_CALLBACK_API +/** + * Default receive callback that is called if the user didn't register + * a recv callback for the pcb. + */ +err_t +tcp_recv_null(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err) +{ + LWIP_UNUSED_ARG(arg); + + LWIP_ERROR("tcp_recv_null: invalid pcb", pcb != NULL, return ERR_ARG); + + if (p != NULL) { + tcp_recved(pcb, p->tot_len); + pbuf_free(p); + } else if (err == ERR_OK) { + return tcp_close(pcb); + } + return ERR_OK; +} +#endif /* LWIP_CALLBACK_API */ + +/** + * Kills the oldest active connection that has a lower priority than 'prio'. + * + * @param prio minimum priority + */ +static void +tcp_kill_prio(u8_t prio) +{ + struct tcp_pcb *pcb, *inactive; + u32_t inactivity; + u8_t mprio; + + mprio = LWIP_MIN(TCP_PRIO_MAX, prio); + + /* We want to kill connections with a lower prio, so bail out if + * supplied prio is 0 - there can never be a lower prio + */ + if (mprio == 0) { + return; + } + + /* We only want kill connections with a lower prio, so decrement prio by one + * and start searching for oldest connection with same or lower priority than mprio. + * We want to find the connections with the lowest possible prio, and among + * these the one with the longest inactivity time. + */ + mprio--; + + inactivity = 0; + inactive = NULL; + for (pcb = tcp_active_pcbs; pcb != NULL; pcb = pcb->next) { + /* lower prio is always a kill candidate */ + if ((pcb->prio < mprio) || + /* longer inactivity is also a kill candidate */ + ((pcb->prio == mprio) && ((u32_t)(tcp_ticks - pcb->tmr) >= inactivity))) { + inactivity = tcp_ticks - pcb->tmr; + inactive = pcb; + mprio = pcb->prio; + } + } + if (inactive != NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_kill_prio: killing oldest PCB %p (%"S32_F")\n", + (void *)inactive, inactivity)); + tcp_abort(inactive); + } +} + +/** + * Kills the oldest connection that is in specific state. + * Called from tcp_alloc() for LAST_ACK and CLOSING if no more connections are available. + */ +static void +tcp_kill_state(enum tcp_state state) +{ + struct tcp_pcb *pcb, *inactive; + u32_t inactivity; + + LWIP_ASSERT("invalid state", (state == CLOSING) || (state == LAST_ACK)); + + inactivity = 0; + inactive = NULL; + /* Go through the list of active pcbs and get the oldest pcb that is in state + CLOSING/LAST_ACK. */ + for (pcb = tcp_active_pcbs; pcb != NULL; pcb = pcb->next) { + if (pcb->state == state) { + if ((u32_t)(tcp_ticks - pcb->tmr) >= inactivity) { + inactivity = tcp_ticks - pcb->tmr; + inactive = pcb; + } + } + } + if (inactive != NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_kill_closing: killing oldest %s PCB %p (%"S32_F")\n", + tcp_state_str[state], (void *)inactive, inactivity)); + /* Don't send a RST, since no data is lost. */ + tcp_abandon(inactive, 0); + } +} + +/** + * Kills the oldest connection that is in TIME_WAIT state. + * Called from tcp_alloc() if no more connections are available. + */ +static void +tcp_kill_timewait(void) +{ + struct tcp_pcb *pcb, *inactive; + u32_t inactivity; + + inactivity = 0; + inactive = NULL; + /* Go through the list of TIME_WAIT pcbs and get the oldest pcb. */ + for (pcb = tcp_tw_pcbs; pcb != NULL; pcb = pcb->next) { + if ((u32_t)(tcp_ticks - pcb->tmr) >= inactivity) { + inactivity = tcp_ticks - pcb->tmr; + inactive = pcb; + } + } + if (inactive != NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_kill_timewait: killing oldest TIME-WAIT PCB %p (%"S32_F")\n", + (void *)inactive, inactivity)); + tcp_abort(inactive); + } +} + +/* Called when allocating a pcb fails. + * In this case, we want to handle all pcbs that want to close first: if we can + * now send the FIN (which failed before), the pcb might be in a state that is + * OK for us to now free it. + */ +static void +tcp_handle_closepend(void) +{ + struct tcp_pcb *pcb = tcp_active_pcbs; + + while (pcb != NULL) { + struct tcp_pcb *next = pcb->next; + /* send pending FIN */ + if (pcb->flags & TF_CLOSEPEND) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_handle_closepend: pending FIN\n")); + tcp_clear_flags(pcb, TF_CLOSEPEND); + tcp_close_shutdown_fin(pcb); + } + pcb = next; + } +} + +/** + * Allocate a new tcp_pcb structure. + * + * @param prio priority for the new pcb + * @return a new tcp_pcb that initially is in state CLOSED + */ +struct tcp_pcb * +tcp_alloc(u8_t prio) +{ + struct tcp_pcb *pcb; + + LWIP_ASSERT_CORE_LOCKED(); + + pcb = (struct tcp_pcb *)memp_malloc(MEMP_TCP_PCB); + if (pcb == NULL) { + /* Try to send FIN for all pcbs stuck in TF_CLOSEPEND first */ + tcp_handle_closepend(); + + /* Try killing oldest connection in TIME-WAIT. */ + LWIP_DEBUGF(TCP_DEBUG, ("tcp_alloc: killing off oldest TIME-WAIT connection\n")); + tcp_kill_timewait(); + /* Try to allocate a tcp_pcb again. */ + pcb = (struct tcp_pcb *)memp_malloc(MEMP_TCP_PCB); + if (pcb == NULL) { + /* Try killing oldest connection in LAST-ACK (these wouldn't go to TIME-WAIT). */ + LWIP_DEBUGF(TCP_DEBUG, ("tcp_alloc: killing off oldest LAST-ACK connection\n")); + tcp_kill_state(LAST_ACK); + /* Try to allocate a tcp_pcb again. */ + pcb = (struct tcp_pcb *)memp_malloc(MEMP_TCP_PCB); + if (pcb == NULL) { + /* Try killing oldest connection in CLOSING. */ + LWIP_DEBUGF(TCP_DEBUG, ("tcp_alloc: killing off oldest CLOSING connection\n")); + tcp_kill_state(CLOSING); + /* Try to allocate a tcp_pcb again. */ + pcb = (struct tcp_pcb *)memp_malloc(MEMP_TCP_PCB); + if (pcb == NULL) { + /* Try killing oldest active connection with lower priority than the new one. */ + LWIP_DEBUGF(TCP_DEBUG, ("tcp_alloc: killing oldest connection with prio lower than %d\n", prio)); + tcp_kill_prio(prio); + /* Try to allocate a tcp_pcb again. */ + pcb = (struct tcp_pcb *)memp_malloc(MEMP_TCP_PCB); + if (pcb != NULL) { + /* adjust err stats: memp_malloc failed multiple times before */ + MEMP_STATS_DEC(err, MEMP_TCP_PCB); + } + } + if (pcb != NULL) { + /* adjust err stats: memp_malloc failed multiple times before */ + MEMP_STATS_DEC(err, MEMP_TCP_PCB); + } + } + if (pcb != NULL) { + /* adjust err stats: memp_malloc failed multiple times before */ + MEMP_STATS_DEC(err, MEMP_TCP_PCB); + } + } + if (pcb != NULL) { + /* adjust err stats: memp_malloc failed above */ + MEMP_STATS_DEC(err, MEMP_TCP_PCB); + } + } + if (pcb != NULL) { + /* zero out the whole pcb, so there is no need to initialize members to zero */ + memset(pcb, 0, sizeof(struct tcp_pcb)); + pcb->prio = prio; + pcb->snd_buf = TCP_SND_BUF; + /* Start with a window that does not need scaling. When window scaling is + enabled and used, the window is enlarged when both sides agree on scaling. */ + pcb->rcv_wnd = pcb->rcv_ann_wnd = TCPWND_MIN16(TCP_WND); + pcb->ttl = TCP_TTL; + /* As initial send MSS, we use TCP_MSS but limit it to 536. + The send MSS is updated when an MSS option is received. */ + pcb->mss = INITIAL_MSS; + pcb->rto = 3000 / TCP_SLOW_INTERVAL; + pcb->sv = 3000 / TCP_SLOW_INTERVAL; + pcb->rtime = -1; + pcb->cwnd = 1; + pcb->tmr = tcp_ticks; + pcb->last_timer = tcp_timer_ctr; + + /* RFC 5681 recommends setting ssthresh abritrarily high and gives an example + of using the largest advertised receive window. We've seen complications with + receiving TCPs that use window scaling and/or window auto-tuning where the + initial advertised window is very small and then grows rapidly once the + connection is established. To avoid these complications, we set ssthresh to the + largest effective cwnd (amount of in-flight data) that the sender can have. */ + pcb->ssthresh = TCP_SND_BUF; + +#if LWIP_CALLBACK_API + pcb->recv = tcp_recv_null; +#endif /* LWIP_CALLBACK_API */ + + /* Init KEEPALIVE timer */ + pcb->keep_idle = TCP_KEEPIDLE_DEFAULT; + +#if LWIP_TCP_KEEPALIVE + pcb->keep_intvl = TCP_KEEPINTVL_DEFAULT; + pcb->keep_cnt = TCP_KEEPCNT_DEFAULT; +#endif /* LWIP_TCP_KEEPALIVE */ + } + return pcb; +} + +/** + * @ingroup tcp_raw + * Creates a new TCP protocol control block but doesn't place it on + * any of the TCP PCB lists. + * The pcb is not put on any list until binding using tcp_bind(). + * If memory is not available for creating the new pcb, NULL is returned. + * + * @internal: Maybe there should be a idle TCP PCB list where these + * PCBs are put on. Port reservation using tcp_bind() is implemented but + * allocated pcbs that are not bound can't be killed automatically if wanting + * to allocate a pcb with higher prio (@see tcp_kill_prio()) + * + * @return a new tcp_pcb that initially is in state CLOSED + */ +struct tcp_pcb * +tcp_new(void) +{ + return tcp_alloc(TCP_PRIO_NORMAL); +} + +/** + * @ingroup tcp_raw + * Creates a new TCP protocol control block but doesn't + * place it on any of the TCP PCB lists. + * The pcb is not put on any list until binding using tcp_bind(). + * + * @param type IP address type, see @ref lwip_ip_addr_type definitions. + * If you want to listen to IPv4 and IPv6 (dual-stack) connections, + * supply @ref IPADDR_TYPE_ANY as argument and bind to @ref IP_ANY_TYPE. + * @return a new tcp_pcb that initially is in state CLOSED + */ +struct tcp_pcb * +tcp_new_ip_type(u8_t type) +{ + struct tcp_pcb *pcb; + pcb = tcp_alloc(TCP_PRIO_NORMAL); +#if LWIP_IPV4 && LWIP_IPV6 + if (pcb != NULL) { + IP_SET_TYPE_VAL(pcb->local_ip, type); + IP_SET_TYPE_VAL(pcb->remote_ip, type); + } +#else + LWIP_UNUSED_ARG(type); +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + return pcb; +} + +/** + * @ingroup tcp_raw + * Specifies the program specific state that should be passed to all + * other callback functions. The "pcb" argument is the current TCP + * connection control block, and the "arg" argument is the argument + * that will be passed to the callbacks. + * + * @param pcb tcp_pcb to set the callback argument + * @param arg void pointer argument to pass to callback functions + */ +void +tcp_arg(struct tcp_pcb *pcb, void *arg) +{ + LWIP_ASSERT_CORE_LOCKED(); + /* This function is allowed to be called for both listen pcbs and + connection pcbs. */ + if (pcb != NULL) { + pcb->callback_arg = arg; + } +} +#if LWIP_CALLBACK_API + +/** + * @ingroup tcp_raw + * Sets the callback function that will be called when new data + * arrives. The callback function will be passed a NULL pbuf to + * indicate that the remote host has closed the connection. If the + * callback function returns ERR_OK or ERR_ABRT it must have + * freed the pbuf, otherwise it must not have freed it. + * + * @param pcb tcp_pcb to set the recv callback + * @param recv callback function to call for this pcb when data is received + */ +void +tcp_recv(struct tcp_pcb *pcb, tcp_recv_fn recv) +{ + LWIP_ASSERT_CORE_LOCKED(); + if (pcb != NULL) { + LWIP_ASSERT("invalid socket state for recv callback", pcb->state != LISTEN); + pcb->recv = recv; + } +} + +/** + * @ingroup tcp_raw + * Specifies the callback function that should be called when data has + * successfully been received (i.e., acknowledged) by the remote + * host. The len argument passed to the callback function gives the + * amount bytes that was acknowledged by the last acknowledgment. + * + * @param pcb tcp_pcb to set the sent callback + * @param sent callback function to call for this pcb when data is successfully sent + */ +void +tcp_sent(struct tcp_pcb *pcb, tcp_sent_fn sent) +{ + LWIP_ASSERT_CORE_LOCKED(); + if (pcb != NULL) { + LWIP_ASSERT("invalid socket state for sent callback", pcb->state != LISTEN); + pcb->sent = sent; + } +} + +/** + * @ingroup tcp_raw + * Used to specify the function that should be called when a fatal error + * has occurred on the connection. + * + * If a connection is aborted because of an error, the application is + * alerted of this event by the err callback. Errors that might abort a + * connection are when there is a shortage of memory. The callback + * function to be called is set using the tcp_err() function. + * + * @note The corresponding pcb is already freed when this callback is called! + * + * @param pcb tcp_pcb to set the err callback + * @param err callback function to call for this pcb when a fatal error + * has occurred on the connection + */ +void +tcp_err(struct tcp_pcb *pcb, tcp_err_fn err) +{ + LWIP_ASSERT_CORE_LOCKED(); + if (pcb != NULL) { + LWIP_ASSERT("invalid socket state for err callback", pcb->state != LISTEN); + pcb->errf = err; + } +} + +/** + * @ingroup tcp_raw + * Used for specifying the function that should be called when a + * LISTENing connection has been connected to another host. + * + * @param pcb tcp_pcb to set the accept callback + * @param accept callback function to call for this pcb when LISTENing + * connection has been connected to another host + */ +void +tcp_accept(struct tcp_pcb *pcb, tcp_accept_fn accept) +{ + LWIP_ASSERT_CORE_LOCKED(); + if ((pcb != NULL) && (pcb->state == LISTEN)) { + struct tcp_pcb_listen *lpcb = (struct tcp_pcb_listen *)pcb; + lpcb->accept = accept; + } +} +#endif /* LWIP_CALLBACK_API */ + + +/** + * @ingroup tcp_raw + * Specifies the polling interval and the callback function that should + * be called to poll the application. The interval is specified in + * number of TCP coarse grained timer shots, which typically occurs + * twice a second. An interval of 10 means that the application would + * be polled every 5 seconds. + * + * When a connection is idle (i.e., no data is either transmitted or + * received), lwIP will repeatedly poll the application by calling a + * specified callback function. This can be used either as a watchdog + * timer for killing connections that have stayed idle for too long, or + * as a method of waiting for memory to become available. For instance, + * if a call to tcp_write() has failed because memory wasn't available, + * the application may use the polling functionality to call tcp_write() + * again when the connection has been idle for a while. + */ +void +tcp_poll(struct tcp_pcb *pcb, tcp_poll_fn poll, u8_t interval) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("tcp_poll: invalid pcb", pcb != NULL, return); + LWIP_ASSERT("invalid socket state for poll", pcb->state != LISTEN); + +#if LWIP_CALLBACK_API + pcb->poll = poll; +#else /* LWIP_CALLBACK_API */ + LWIP_UNUSED_ARG(poll); +#endif /* LWIP_CALLBACK_API */ + pcb->pollinterval = interval; +} + +/** + * Purges a TCP PCB. Removes any buffered data and frees the buffer memory + * (pcb->ooseq, pcb->unsent and pcb->unacked are freed). + * + * @param pcb tcp_pcb to purge. The pcb itself is not deallocated! + */ +void +tcp_pcb_purge(struct tcp_pcb *pcb) +{ + LWIP_ERROR("tcp_pcb_purge: invalid pcb", pcb != NULL, return); + + if (pcb->state != CLOSED && + pcb->state != TIME_WAIT && + pcb->state != LISTEN) { + + LWIP_DEBUGF(TCP_DEBUG, ("tcp_pcb_purge\n")); + + tcp_backlog_accepted(pcb); + + if (pcb->refused_data != NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_pcb_purge: data left on ->refused_data\n")); + pbuf_free(pcb->refused_data); + pcb->refused_data = NULL; + } + if (pcb->unsent != NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_pcb_purge: not all data sent\n")); + } + if (pcb->unacked != NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_pcb_purge: data left on ->unacked\n")); + } +#if TCP_QUEUE_OOSEQ + if (pcb->ooseq != NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_pcb_purge: data left on ->ooseq\n")); + tcp_free_ooseq(pcb); + } +#endif /* TCP_QUEUE_OOSEQ */ + + /* Stop the retransmission timer as it will expect data on unacked + queue if it fires */ + pcb->rtime = -1; + + tcp_segs_free(pcb->unsent); + tcp_segs_free(pcb->unacked); + pcb->unacked = pcb->unsent = NULL; +#if TCP_OVERSIZE + pcb->unsent_oversize = 0; +#endif /* TCP_OVERSIZE */ + } +} + +/** + * Purges the PCB and removes it from a PCB list. Any delayed ACKs are sent first. + * + * @param pcblist PCB list to purge. + * @param pcb tcp_pcb to purge. The pcb itself is NOT deallocated! + */ +void +tcp_pcb_remove(struct tcp_pcb **pcblist, struct tcp_pcb *pcb) +{ + LWIP_ASSERT("tcp_pcb_remove: invalid pcb", pcb != NULL); + LWIP_ASSERT("tcp_pcb_remove: invalid pcblist", pcblist != NULL); + + TCP_RMV(pcblist, pcb); + + tcp_pcb_purge(pcb); + + /* if there is an outstanding delayed ACKs, send it */ + if ((pcb->state != TIME_WAIT) && + (pcb->state != LISTEN) && + (pcb->flags & TF_ACK_DELAY)) { + tcp_ack_now(pcb); + tcp_output(pcb); + } + + if (pcb->state != LISTEN) { + LWIP_ASSERT("unsent segments leaking", pcb->unsent == NULL); + LWIP_ASSERT("unacked segments leaking", pcb->unacked == NULL); +#if TCP_QUEUE_OOSEQ + LWIP_ASSERT("ooseq segments leaking", pcb->ooseq == NULL); +#endif /* TCP_QUEUE_OOSEQ */ + } + + pcb->state = CLOSED; + /* reset the local port to prevent the pcb from being 'bound' */ + pcb->local_port = 0; + + LWIP_ASSERT("tcp_pcb_remove: tcp_pcbs_sane()", tcp_pcbs_sane()); +} + +/** + * Calculates a new initial sequence number for new connections. + * + * @return u32_t pseudo random sequence number + */ +u32_t +tcp_next_iss(struct tcp_pcb *pcb) +{ +#ifdef LWIP_HOOK_TCP_ISN + LWIP_ASSERT("tcp_next_iss: invalid pcb", pcb != NULL); + return LWIP_HOOK_TCP_ISN(&pcb->local_ip, pcb->local_port, &pcb->remote_ip, pcb->remote_port); +#else /* LWIP_HOOK_TCP_ISN */ + static u32_t iss = 6510; + + LWIP_ASSERT("tcp_next_iss: invalid pcb", pcb != NULL); + LWIP_UNUSED_ARG(pcb); + + iss += tcp_ticks; /* XXX */ + return iss; +#endif /* LWIP_HOOK_TCP_ISN */ +} + +#if TCP_CALCULATE_EFF_SEND_MSS +/** + * Calculates the effective send mss that can be used for a specific IP address + * by calculating the minimum of TCP_MSS and the mtu (if set) of the target + * netif (if not NULL). + */ +u16_t +tcp_eff_send_mss_netif(u16_t sendmss, struct netif *outif, const ip_addr_t *dest) +{ + u16_t mss_s; + u16_t mtu; + + LWIP_UNUSED_ARG(dest); /* in case IPv6 is disabled */ + + LWIP_ASSERT("tcp_eff_send_mss_netif: invalid dst_ip", dest != NULL); + +#if LWIP_IPV6 +#if LWIP_IPV4 + if (IP_IS_V6(dest)) +#endif /* LWIP_IPV4 */ + { + /* First look in destination cache, to see if there is a Path MTU. */ + mtu = nd6_get_destination_mtu(ip_2_ip6(dest), outif); + } +#if LWIP_IPV4 + else +#endif /* LWIP_IPV4 */ +#endif /* LWIP_IPV6 */ +#if LWIP_IPV4 + { + if (outif == NULL) { + return sendmss; + } + mtu = outif->mtu; + } +#endif /* LWIP_IPV4 */ + + if (mtu != 0) { + u16_t offset; +#if LWIP_IPV6 +#if LWIP_IPV4 + if (IP_IS_V6(dest)) +#endif /* LWIP_IPV4 */ + { + offset = IP6_HLEN + TCP_HLEN; + } +#if LWIP_IPV4 + else +#endif /* LWIP_IPV4 */ +#endif /* LWIP_IPV6 */ +#if LWIP_IPV4 + { + offset = IP_HLEN + TCP_HLEN; + } +#endif /* LWIP_IPV4 */ + mss_s = (mtu > offset) ? (u16_t)(mtu - offset) : 0; + /* RFC 1122, chap 4.2.2.6: + * Eff.snd.MSS = min(SendMSS+20, MMS_S) - TCPhdrsize - IPoptionsize + * We correct for TCP options in tcp_write(), and don't support IP options. + */ + sendmss = LWIP_MIN(sendmss, mss_s); + } + return sendmss; +} +#endif /* TCP_CALCULATE_EFF_SEND_MSS */ + +/** Helper function for tcp_netif_ip_addr_changed() that iterates a pcb list */ +static void +tcp_netif_ip_addr_changed_pcblist(const ip_addr_t *old_addr, struct tcp_pcb *pcb_list) +{ + struct tcp_pcb *pcb; + pcb = pcb_list; + + LWIP_ASSERT("tcp_netif_ip_addr_changed_pcblist: invalid old_addr", old_addr != NULL); + + while (pcb != NULL) { + /* PCB bound to current local interface address? */ + if (ip_addr_cmp(&pcb->local_ip, old_addr) +#if LWIP_AUTOIP + /* connections to link-local addresses must persist (RFC3927 ch. 1.9) */ + && (!IP_IS_V4_VAL(pcb->local_ip) || !ip4_addr_islinklocal(ip_2_ip4(&pcb->local_ip))) +#endif /* LWIP_AUTOIP */ + ) { + /* this connection must be aborted */ + struct tcp_pcb *next = pcb->next; + LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_STATE, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb)); + tcp_abort(pcb); + pcb = next; + } else { + pcb = pcb->next; + } + } +} + +/** This function is called from netif.c when address is changed or netif is removed + * + * @param old_addr IP address of the netif before change + * @param new_addr IP address of the netif after change or NULL if netif has been removed + */ +void +tcp_netif_ip_addr_changed(const ip_addr_t *old_addr, const ip_addr_t *new_addr) +{ + struct tcp_pcb_listen *lpcb; + + if (!ip_addr_isany(old_addr)) { + tcp_netif_ip_addr_changed_pcblist(old_addr, tcp_active_pcbs); + tcp_netif_ip_addr_changed_pcblist(old_addr, tcp_bound_pcbs); + + if (!ip_addr_isany(new_addr)) { + /* PCB bound to current local interface address? */ + for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) { + /* PCB bound to current local interface address? */ + if (ip_addr_cmp(&lpcb->local_ip, old_addr)) { + /* The PCB is listening to the old ipaddr and + * is set to listen to the new one instead */ + ip_addr_copy(lpcb->local_ip, *new_addr); + } + } + } + } +} + +const char * +tcp_debug_state_str(enum tcp_state s) +{ + return tcp_state_str[s]; +} + +err_t +tcp_tcp_get_tcp_addrinfo(struct tcp_pcb *pcb, int local, ip_addr_t *addr, u16_t *port) +{ + if (pcb) { + if (local) { + if (addr) { + *addr = pcb->local_ip; + } + if (port) { + *port = pcb->local_port; + } + } else { + if (addr) { + *addr = pcb->remote_ip; + } + if (port) { + *port = pcb->remote_port; + } + } + return ERR_OK; + } + return ERR_VAL; +} + +#if TCP_QUEUE_OOSEQ +/* Free all ooseq pbufs (and possibly reset SACK state) */ +void +tcp_free_ooseq(struct tcp_pcb *pcb) +{ + if (pcb->ooseq) { + tcp_segs_free(pcb->ooseq); + pcb->ooseq = NULL; +#if LWIP_TCP_SACK_OUT + memset(pcb->rcv_sacks, 0, sizeof(pcb->rcv_sacks)); +#endif /* LWIP_TCP_SACK_OUT */ + } +} +#endif /* TCP_QUEUE_OOSEQ */ + +#if TCP_DEBUG || TCP_INPUT_DEBUG || TCP_OUTPUT_DEBUG +/** + * Print a tcp header for debugging purposes. + * + * @param tcphdr pointer to a struct tcp_hdr + */ +void +tcp_debug_print(struct tcp_hdr *tcphdr) +{ + LWIP_DEBUGF(TCP_DEBUG, ("TCP header:\n")); + LWIP_DEBUGF(TCP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(TCP_DEBUG, ("| %5"U16_F" | %5"U16_F" | (src port, dest port)\n", + lwip_ntohs(tcphdr->src), lwip_ntohs(tcphdr->dest))); + LWIP_DEBUGF(TCP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(TCP_DEBUG, ("| %010"U32_F" | (seq no)\n", + lwip_ntohl(tcphdr->seqno))); + LWIP_DEBUGF(TCP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(TCP_DEBUG, ("| %010"U32_F" | (ack no)\n", + lwip_ntohl(tcphdr->ackno))); + LWIP_DEBUGF(TCP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(TCP_DEBUG, ("| %2"U16_F" | |%"U16_F"%"U16_F"%"U16_F"%"U16_F"%"U16_F"%"U16_F"| %5"U16_F" | (hdrlen, flags (", + TCPH_HDRLEN(tcphdr), + (u16_t)(TCPH_FLAGS(tcphdr) >> 5 & 1), + (u16_t)(TCPH_FLAGS(tcphdr) >> 4 & 1), + (u16_t)(TCPH_FLAGS(tcphdr) >> 3 & 1), + (u16_t)(TCPH_FLAGS(tcphdr) >> 2 & 1), + (u16_t)(TCPH_FLAGS(tcphdr) >> 1 & 1), + (u16_t)(TCPH_FLAGS(tcphdr) & 1), + lwip_ntohs(tcphdr->wnd))); + tcp_debug_print_flags(TCPH_FLAGS(tcphdr)); + LWIP_DEBUGF(TCP_DEBUG, ("), win)\n")); + LWIP_DEBUGF(TCP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(TCP_DEBUG, ("| 0x%04"X16_F" | %5"U16_F" | (chksum, urgp)\n", + lwip_ntohs(tcphdr->chksum), lwip_ntohs(tcphdr->urgp))); + LWIP_DEBUGF(TCP_DEBUG, ("+-------------------------------+\n")); +} + +/** + * Print a tcp state for debugging purposes. + * + * @param s enum tcp_state to print + */ +void +tcp_debug_print_state(enum tcp_state s) +{ + LWIP_DEBUGF(TCP_DEBUG, ("State: %s\n", tcp_state_str[s])); +} + +/** + * Print tcp flags for debugging purposes. + * + * @param flags tcp flags, all active flags are printed + */ +void +tcp_debug_print_flags(u8_t flags) +{ + if (flags & TCP_FIN) { + LWIP_DEBUGF(TCP_DEBUG, ("FIN ")); + } + if (flags & TCP_SYN) { + LWIP_DEBUGF(TCP_DEBUG, ("SYN ")); + } + if (flags & TCP_RST) { + LWIP_DEBUGF(TCP_DEBUG, ("RST ")); + } + if (flags & TCP_PSH) { + LWIP_DEBUGF(TCP_DEBUG, ("PSH ")); + } + if (flags & TCP_ACK) { + LWIP_DEBUGF(TCP_DEBUG, ("ACK ")); + } + if (flags & TCP_URG) { + LWIP_DEBUGF(TCP_DEBUG, ("URG ")); + } + if (flags & TCP_ECE) { + LWIP_DEBUGF(TCP_DEBUG, ("ECE ")); + } + if (flags & TCP_CWR) { + LWIP_DEBUGF(TCP_DEBUG, ("CWR ")); + } + LWIP_DEBUGF(TCP_DEBUG, ("\n")); +} + +/** + * Print all tcp_pcbs in every list for debugging purposes. + */ +void +tcp_debug_print_pcbs(void) +{ + struct tcp_pcb *pcb; + struct tcp_pcb_listen *pcbl; + + LWIP_DEBUGF(TCP_DEBUG, ("Active PCB states:\n")); + for (pcb = tcp_active_pcbs; pcb != NULL; pcb = pcb->next) { + LWIP_DEBUGF(TCP_DEBUG, ("Local port %"U16_F", foreign port %"U16_F" snd_nxt %"U32_F" rcv_nxt %"U32_F" ", + pcb->local_port, pcb->remote_port, + pcb->snd_nxt, pcb->rcv_nxt)); + tcp_debug_print_state(pcb->state); + } + + LWIP_DEBUGF(TCP_DEBUG, ("Listen PCB states:\n")); + for (pcbl = tcp_listen_pcbs.listen_pcbs; pcbl != NULL; pcbl = pcbl->next) { + LWIP_DEBUGF(TCP_DEBUG, ("Local port %"U16_F" ", pcbl->local_port)); + tcp_debug_print_state(pcbl->state); + } + + LWIP_DEBUGF(TCP_DEBUG, ("TIME-WAIT PCB states:\n")); + for (pcb = tcp_tw_pcbs; pcb != NULL; pcb = pcb->next) { + LWIP_DEBUGF(TCP_DEBUG, ("Local port %"U16_F", foreign port %"U16_F" snd_nxt %"U32_F" rcv_nxt %"U32_F" ", + pcb->local_port, pcb->remote_port, + pcb->snd_nxt, pcb->rcv_nxt)); + tcp_debug_print_state(pcb->state); + } +} + +/** + * Check state consistency of the tcp_pcb lists. + */ +s16_t +tcp_pcbs_sane(void) +{ + struct tcp_pcb *pcb; + for (pcb = tcp_active_pcbs; pcb != NULL; pcb = pcb->next) { + LWIP_ASSERT("tcp_pcbs_sane: active pcb->state != CLOSED", pcb->state != CLOSED); + LWIP_ASSERT("tcp_pcbs_sane: active pcb->state != LISTEN", pcb->state != LISTEN); + LWIP_ASSERT("tcp_pcbs_sane: active pcb->state != TIME-WAIT", pcb->state != TIME_WAIT); + } + for (pcb = tcp_tw_pcbs; pcb != NULL; pcb = pcb->next) { + LWIP_ASSERT("tcp_pcbs_sane: tw pcb->state == TIME-WAIT", pcb->state == TIME_WAIT); + } + return 1; +} +#endif /* TCP_DEBUG */ + +#if LWIP_TCP_PCB_NUM_EXT_ARGS +/** + * @defgroup tcp_raw_extargs ext arguments + * @ingroup tcp_raw + * Additional data storage per tcp pcb\n + * @see @ref tcp_raw + * + * When LWIP_TCP_PCB_NUM_EXT_ARGS is > 0, every tcp pcb (including listen pcb) + * includes a number of additional argument entries in an array. + * + * To support memory management, in addition to a 'void *', callbacks can be + * provided to manage transition from listening pcbs to connections and to + * deallocate memory when a pcb is deallocated (see struct @ref tcp_ext_arg_callbacks). + * + * After allocating this index, use @ref tcp_ext_arg_set and @ref tcp_ext_arg_get + * to store and load arguments from this index for a given pcb. + */ + +static u8_t tcp_ext_arg_id; + +/** + * @ingroup tcp_raw_extargs + * Allocate an index to store data in ext_args member of struct tcp_pcb. + * Returned value is an index in mentioned array. + * The index is *global* over all pcbs! + * + * When @ref LWIP_TCP_PCB_NUM_EXT_ARGS is > 0, every tcp pcb (including listen pcb) + * includes a number of additional argument entries in an array. + * + * To support memory management, in addition to a 'void *', callbacks can be + * provided to manage transition from listening pcbs to connections and to + * deallocate memory when a pcb is deallocated (see struct @ref tcp_ext_arg_callbacks). + * + * After allocating this index, use @ref tcp_ext_arg_set and @ref tcp_ext_arg_get + * to store and load arguments from this index for a given pcb. + * + * @return a unique index into struct tcp_pcb.ext_args + */ +u8_t +tcp_ext_arg_alloc_id(void) +{ + u8_t result = tcp_ext_arg_id; + tcp_ext_arg_id++; + + LWIP_ASSERT_CORE_LOCKED(); + +#if LWIP_TCP_PCB_NUM_EXT_ARGS >= 255 +#error LWIP_TCP_PCB_NUM_EXT_ARGS +#endif + LWIP_ASSERT("Increase LWIP_TCP_PCB_NUM_EXT_ARGS in lwipopts.h", result < LWIP_TCP_PCB_NUM_EXT_ARGS); + return result; +} + +/** + * @ingroup tcp_raw_extargs + * Set callbacks for a given index of ext_args on the specified pcb. + * + * @param pcb tcp_pcb for which to set the callback + * @param id ext_args index to set (allocated via @ref tcp_ext_arg_alloc_id) + * @param callbacks callback table (const since it is referenced, not copied!) + */ +void +tcp_ext_arg_set_callbacks(struct tcp_pcb *pcb, uint8_t id, const struct tcp_ext_arg_callbacks * const callbacks) +{ + LWIP_ASSERT("pcb != NULL", pcb != NULL); + LWIP_ASSERT("id < LWIP_TCP_PCB_NUM_EXT_ARGS", id < LWIP_TCP_PCB_NUM_EXT_ARGS); + LWIP_ASSERT("callbacks != NULL", callbacks != NULL); + + LWIP_ASSERT_CORE_LOCKED(); + + pcb->ext_args[id].callbacks = callbacks; +} + +/** + * @ingroup tcp_raw_extargs + * Set data for a given index of ext_args on the specified pcb. + * + * @param pcb tcp_pcb for which to set the data + * @param id ext_args index to set (allocated via @ref tcp_ext_arg_alloc_id) + * @param arg data pointer to set + */ +void tcp_ext_arg_set(struct tcp_pcb *pcb, uint8_t id, void *arg) +{ + LWIP_ASSERT("pcb != NULL", pcb != NULL); + LWIP_ASSERT("id < LWIP_TCP_PCB_NUM_EXT_ARGS", id < LWIP_TCP_PCB_NUM_EXT_ARGS); + + LWIP_ASSERT_CORE_LOCKED(); + + pcb->ext_args[id].data = arg; +} + +/** + * @ingroup tcp_raw_extargs + * Set data for a given index of ext_args on the specified pcb. + * + * @param pcb tcp_pcb for which to set the data + * @param id ext_args index to set (allocated via @ref tcp_ext_arg_alloc_id) + * @return data pointer at the given index + */ +void *tcp_ext_arg_get(const struct tcp_pcb *pcb, uint8_t id) +{ + LWIP_ASSERT("pcb != NULL", pcb != NULL); + LWIP_ASSERT("id < LWIP_TCP_PCB_NUM_EXT_ARGS", id < LWIP_TCP_PCB_NUM_EXT_ARGS); + + LWIP_ASSERT_CORE_LOCKED(); + + return pcb->ext_args[id].data; +} + +/** This function calls the "destroy" callback for all ext_args once a pcb is + * freed. + */ +static void +tcp_ext_arg_invoke_callbacks_destroyed(struct tcp_pcb_ext_args *ext_args) +{ + int i; + LWIP_ASSERT("ext_args != NULL", ext_args != NULL); + + for (i = 0; i < LWIP_TCP_PCB_NUM_EXT_ARGS; i++) { + if (ext_args[i].callbacks != NULL) { + if (ext_args[i].callbacks->destroy != NULL) { + ext_args[i].callbacks->destroy((u8_t)i, ext_args[i].data); + } + } + } +} + +/** This function calls the "passive_open" callback for all ext_args if a connection + * is in the process of being accepted. This is called just after the SYN is + * received and before a SYN/ACK is sent, to allow to modify the very first + * segment sent even on passive open. Naturally, the "accepted" callback of the + * pcb has not been called yet! + */ +err_t +tcp_ext_arg_invoke_callbacks_passive_open(struct tcp_pcb_listen *lpcb, struct tcp_pcb *cpcb) +{ + int i; + LWIP_ASSERT("lpcb != NULL", lpcb != NULL); + LWIP_ASSERT("cpcb != NULL", cpcb != NULL); + + for (i = 0; i < LWIP_TCP_PCB_NUM_EXT_ARGS; i++) { + if (lpcb->ext_args[i].callbacks != NULL) { + if (lpcb->ext_args[i].callbacks->passive_open != NULL) { + err_t err = lpcb->ext_args[i].callbacks->passive_open((u8_t)i, lpcb, cpcb); + if (err != ERR_OK) { + return err; + } + } + } + } + return ERR_OK; +} +#endif /* LWIP_TCP_PCB_NUM_EXT_ARGS */ + +#endif /* LWIP_TCP */ diff --git a/Other/tun2socks/core/c/core/tcp_in.c b/Other/tun2socks/core/c/core/tcp_in.c new file mode 100644 index 0000000..311cf38 --- /dev/null +++ b/Other/tun2socks/core/c/core/tcp_in.c @@ -0,0 +1,2194 @@ +/** + * @file + * Transmission Control Protocol, incoming traffic + * + * The input processing functions of the TCP layer. + * + * These functions are generally called in the order (ip_input() ->) + * tcp_input() -> * tcp_process() -> tcp_receive() (-> application). + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#if LWIP_TCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/priv/tcp_priv.h" +#include "lwip/def.h" +#include "lwip/ip_addr.h" +#include "lwip/netif.h" +#include "lwip/mem.h" +#include "lwip/memp.h" +#include "lwip/inet_chksum.h" +#include "lwip/stats.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#if LWIP_ND6_TCP_REACHABILITY_HINTS +#include "lwip/nd6.h" +#endif /* LWIP_ND6_TCP_REACHABILITY_HINTS */ + +#include + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif + +/** Initial CWND calculation as defined RFC 2581 */ +#define LWIP_TCP_CALC_INITIAL_CWND(mss) ((tcpwnd_size_t)LWIP_MIN((4U * (mss)), LWIP_MAX((2U * (mss)), 4380U))) + +/* These variables are global to all functions involved in the input + processing of TCP segments. They are set by the tcp_input() + function. */ +static struct tcp_seg inseg; +static struct tcp_hdr *tcphdr; +static u16_t tcphdr_optlen; +static u16_t tcphdr_opt1len; +static u8_t *tcphdr_opt2; +static u16_t tcp_optidx; +static u32_t seqno, ackno; +static tcpwnd_size_t recv_acked; +static u16_t tcplen; +static u8_t flags; + +static u8_t recv_flags; +static struct pbuf *recv_data; + +struct tcp_pcb *tcp_input_pcb; + +/* Forward declarations. */ +static err_t tcp_process(struct tcp_pcb *pcb); +static void tcp_receive(struct tcp_pcb *pcb); +static void tcp_parseopt(struct tcp_pcb *pcb); + +static void tcp_listen_input(struct tcp_pcb_listen *pcb); +static void tcp_timewait_input(struct tcp_pcb *pcb); + +static int tcp_input_delayed_close(struct tcp_pcb *pcb); + +#if LWIP_TCP_SACK_OUT +static void tcp_add_sack(struct tcp_pcb *pcb, u32_t left, u32_t right); +static void tcp_remove_sacks_lt(struct tcp_pcb *pcb, u32_t seq); +#if defined(TCP_OOSEQ_BYTES_LIMIT) || defined(TCP_OOSEQ_PBUFS_LIMIT) +static void tcp_remove_sacks_gt(struct tcp_pcb *pcb, u32_t seq); +#endif /* TCP_OOSEQ_BYTES_LIMIT || TCP_OOSEQ_PBUFS_LIMIT */ +#endif /* LWIP_TCP_SACK_OUT */ + +/** + * The initial input processing of TCP. It verifies the TCP header, demultiplexes + * the segment between the PCBs and passes it on to tcp_process(), which implements + * the TCP finite state machine. This function is called by the IP layer (in + * ip_input()). + * + * @param p received TCP segment to process (p->payload pointing to the TCP header) + * @param inp network interface on which this segment was received + */ +void +tcp_input(struct pbuf *p, struct netif *inp) +{ + struct tcp_pcb *pcb, *prev; + struct tcp_pcb_listen *lpcb; +#if SO_REUSE + struct tcp_pcb *lpcb_prev = NULL; + struct tcp_pcb_listen *lpcb_any = NULL; +#endif /* SO_REUSE */ + u8_t hdrlen_bytes; + err_t err; + + LWIP_UNUSED_ARG(inp); + LWIP_ASSERT_CORE_LOCKED(); + LWIP_ASSERT("tcp_input: invalid pbuf", p != NULL); + + PERF_START; + + TCP_STATS_INC(tcp.recv); + MIB2_STATS_INC(mib2.tcpinsegs); + + tcphdr = (struct tcp_hdr *)p->payload; + +#if TCP_INPUT_DEBUG + tcp_debug_print(tcphdr); +#endif + + /* Check that TCP header fits in payload */ + if (p->len < TCP_HLEN) { + /* drop short packets */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: short packet (%"U16_F" bytes) discarded\n", p->tot_len)); + TCP_STATS_INC(tcp.lenerr); + goto dropped; + } + + /* Don't even process incoming broadcasts/multicasts. */ + if (ip_addr_isbroadcast(ip_current_dest_addr(), ip_current_netif()) || + ip_addr_ismulticast(ip_current_dest_addr())) { + TCP_STATS_INC(tcp.proterr); + goto dropped; + } + +#if CHECKSUM_CHECK_TCP + IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_CHECK_TCP) { + /* Verify TCP checksum. */ + u16_t chksum = ip_chksum_pseudo(p, IP_PROTO_TCP, p->tot_len, + ip_current_src_addr(), ip_current_dest_addr()); + if (chksum != 0) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: packet discarded due to failing checksum 0x%04"X16_F"\n", + chksum)); + tcp_debug_print(tcphdr); + TCP_STATS_INC(tcp.chkerr); + goto dropped; + } + } +#endif /* CHECKSUM_CHECK_TCP */ + + /* sanity-check header length */ + hdrlen_bytes = TCPH_HDRLEN_BYTES(tcphdr); + if ((hdrlen_bytes < TCP_HLEN) || (hdrlen_bytes > p->tot_len)) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: invalid header length (%"U16_F")\n", (u16_t)hdrlen_bytes)); + TCP_STATS_INC(tcp.lenerr); + goto dropped; + } + + /* Move the payload pointer in the pbuf so that it points to the + TCP data instead of the TCP header. */ + tcphdr_optlen = (u16_t)(hdrlen_bytes - TCP_HLEN); + tcphdr_opt2 = NULL; + if (p->len >= hdrlen_bytes) { + /* all options are in the first pbuf */ + tcphdr_opt1len = tcphdr_optlen; + pbuf_remove_header(p, hdrlen_bytes); /* cannot fail */ + } else { + u16_t opt2len; + /* TCP header fits into first pbuf, options don't - data is in the next pbuf */ + /* there must be a next pbuf, due to hdrlen_bytes sanity check above */ + LWIP_ASSERT("p->next != NULL", p->next != NULL); + + /* advance over the TCP header (cannot fail) */ + pbuf_remove_header(p, TCP_HLEN); + + /* determine how long the first and second parts of the options are */ + tcphdr_opt1len = p->len; + opt2len = (u16_t)(tcphdr_optlen - tcphdr_opt1len); + + /* options continue in the next pbuf: set p to zero length and hide the + options in the next pbuf (adjusting p->tot_len) */ + pbuf_remove_header(p, tcphdr_opt1len); + + /* check that the options fit in the second pbuf */ + if (opt2len > p->next->len) { + /* drop short packets */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: options overflow second pbuf (%"U16_F" bytes)\n", p->next->len)); + TCP_STATS_INC(tcp.lenerr); + goto dropped; + } + + /* remember the pointer to the second part of the options */ + tcphdr_opt2 = (u8_t *)p->next->payload; + + /* advance p->next to point after the options, and manually + adjust p->tot_len to keep it consistent with the changed p->next */ + pbuf_remove_header(p->next, opt2len); + p->tot_len = (u16_t)(p->tot_len - opt2len); + + LWIP_ASSERT("p->len == 0", p->len == 0); + LWIP_ASSERT("p->tot_len == p->next->tot_len", p->tot_len == p->next->tot_len); + } + + /* Convert fields in TCP header to host byte order. */ + tcphdr->src = lwip_ntohs(tcphdr->src); + tcphdr->dest = lwip_ntohs(tcphdr->dest); + seqno = tcphdr->seqno = lwip_ntohl(tcphdr->seqno); + ackno = tcphdr->ackno = lwip_ntohl(tcphdr->ackno); + tcphdr->wnd = lwip_ntohs(tcphdr->wnd); + + flags = TCPH_FLAGS(tcphdr); + tcplen = p->tot_len; + if (flags & (TCP_FIN | TCP_SYN)) { + tcplen++; + if (tcplen < p->tot_len) { + /* u16_t overflow, cannot handle this */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: length u16_t overflow, cannot handle this\n")); + TCP_STATS_INC(tcp.lenerr); + goto dropped; + } + } + + /* Demultiplex an incoming segment. First, we check if it is destined + for an active connection. */ + prev = NULL; + + for (pcb = tcp_active_pcbs; pcb != NULL; pcb = pcb->next) { + LWIP_ASSERT("tcp_input: active pcb->state != CLOSED", pcb->state != CLOSED); + LWIP_ASSERT("tcp_input: active pcb->state != TIME-WAIT", pcb->state != TIME_WAIT); + LWIP_ASSERT("tcp_input: active pcb->state != LISTEN", pcb->state != LISTEN); + + /* check if PCB is bound to specific netif */ + if ((pcb->netif_idx != NETIF_NO_INDEX) && + (pcb->netif_idx != netif_get_index(ip_data.current_input_netif))) { + prev = pcb; + continue; + } + + if (pcb->remote_port == tcphdr->src && + pcb->local_port == tcphdr->dest && + ip_addr_cmp(&pcb->remote_ip, ip_current_src_addr()) && + ip_addr_cmp(&pcb->local_ip, ip_current_dest_addr())) { + /* Move this PCB to the front of the list so that subsequent + lookups will be faster (we exploit locality in TCP segment + arrivals). */ + LWIP_ASSERT("tcp_input: pcb->next != pcb (before cache)", pcb->next != pcb); + if (prev != NULL) { + prev->next = pcb->next; + pcb->next = tcp_active_pcbs; + tcp_active_pcbs = pcb; + } else { + TCP_STATS_INC(tcp.cachehit); + } + LWIP_ASSERT("tcp_input: pcb->next != pcb (after cache)", pcb->next != pcb); + break; + } + prev = pcb; + } + + if (pcb == NULL) { + /* If it did not go to an active connection, we check the connections + in the TIME-WAIT state. */ + for (pcb = tcp_tw_pcbs; pcb != NULL; pcb = pcb->next) { + LWIP_ASSERT("tcp_input: TIME-WAIT pcb->state == TIME-WAIT", pcb->state == TIME_WAIT); + + /* check if PCB is bound to specific netif */ + if ((pcb->netif_idx != NETIF_NO_INDEX) && + (pcb->netif_idx != netif_get_index(ip_data.current_input_netif))) { + continue; + } + + if (pcb->remote_port == tcphdr->src && + pcb->local_port == tcphdr->dest && + ip_addr_cmp(&pcb->remote_ip, ip_current_src_addr()) && + ip_addr_cmp(&pcb->local_ip, ip_current_dest_addr())) { + /* We don't really care enough to move this PCB to the front + of the list since we are not very likely to receive that + many segments for connections in TIME-WAIT. */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: packed for TIME_WAITing connection.\n")); +#ifdef LWIP_HOOK_TCP_INPACKET_PCB + if (LWIP_HOOK_TCP_INPACKET_PCB(pcb, tcphdr, tcphdr_optlen, tcphdr_opt1len, + tcphdr_opt2, p) == ERR_OK) +#endif + { + tcp_timewait_input(pcb); + } + pbuf_free(p); + return; + } + } + + /* Finally, if we still did not get a match, we check all PCBs that + are LISTENing for incoming connections. */ + prev = NULL; + for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) { +#if TUN2SOCKS + // go-tun2socks logic + // use the first one, and it should be set to the loopif + break; +#endif /* TUN2SOCKS */ + + /* check if PCB is bound to specific netif */ + if ((lpcb->netif_idx != NETIF_NO_INDEX) && + (lpcb->netif_idx != netif_get_index(ip_data.current_input_netif))) { + prev = (struct tcp_pcb *)lpcb; + continue; + } + + if (lpcb->local_port == tcphdr->dest) { + if (IP_IS_ANY_TYPE_VAL(lpcb->local_ip)) { + /* found an ANY TYPE (IPv4/IPv6) match */ +#if SO_REUSE + lpcb_any = lpcb; + lpcb_prev = prev; +#else /* SO_REUSE */ + break; +#endif /* SO_REUSE */ + } else if (IP_ADDR_PCB_VERSION_MATCH_EXACT(lpcb, ip_current_dest_addr())) { + if (ip_addr_cmp(&lpcb->local_ip, ip_current_dest_addr())) { + /* found an exact match */ + break; + } else if (ip_addr_isany(&lpcb->local_ip)) { + /* found an ANY-match */ +#if SO_REUSE + lpcb_any = lpcb; + lpcb_prev = prev; +#else /* SO_REUSE */ + break; +#endif /* SO_REUSE */ + } + } + } + prev = (struct tcp_pcb *)lpcb; + } +#if SO_REUSE + /* first try specific local IP */ + if (lpcb == NULL) { + /* only pass to ANY if no specific local IP has been found */ + lpcb = lpcb_any; + prev = lpcb_prev; + } +#endif /* SO_REUSE */ + if (lpcb != NULL) { + /* Move this PCB to the front of the list so that subsequent + lookups will be faster (we exploit locality in TCP segment + arrivals). */ + if (prev != NULL) { + ((struct tcp_pcb_listen *)prev)->next = lpcb->next; + /* our successor is the remainder of the listening list */ + lpcb->next = tcp_listen_pcbs.listen_pcbs; + /* put this listening pcb at the head of the listening list */ + tcp_listen_pcbs.listen_pcbs = lpcb; + } else { + TCP_STATS_INC(tcp.cachehit); + } + + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: packed for LISTENing connection.\n")); +#ifdef LWIP_HOOK_TCP_INPACKET_PCB + if (LWIP_HOOK_TCP_INPACKET_PCB((struct tcp_pcb *)lpcb, tcphdr, tcphdr_optlen, + tcphdr_opt1len, tcphdr_opt2, p) == ERR_OK) +#endif + { + tcp_listen_input(lpcb); + } + pbuf_free(p); + return; + } + } + +#if TCP_INPUT_DEBUG + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("+-+-+-+-+-+-+-+-+-+-+-+-+-+- tcp_input: flags ")); + tcp_debug_print_flags(TCPH_FLAGS(tcphdr)); + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("-+-+-+-+-+-+-+-+-+-+-+-+-+-+\n")); +#endif /* TCP_INPUT_DEBUG */ + + +#ifdef LWIP_HOOK_TCP_INPACKET_PCB + if ((pcb != NULL) && LWIP_HOOK_TCP_INPACKET_PCB(pcb, tcphdr, tcphdr_optlen, + tcphdr_opt1len, tcphdr_opt2, p) != ERR_OK) { + pbuf_free(p); + return; + } +#endif + if (pcb != NULL) { + /* The incoming segment belongs to a connection. */ +#if TCP_INPUT_DEBUG + tcp_debug_print_state(pcb->state); +#endif /* TCP_INPUT_DEBUG */ + + /* Set up a tcp_seg structure. */ + inseg.next = NULL; + inseg.len = p->tot_len; + inseg.p = p; + inseg.tcphdr = tcphdr; + + recv_data = NULL; + recv_flags = 0; + recv_acked = 0; + + if (flags & TCP_PSH) { + p->flags |= PBUF_FLAG_PUSH; + } + + /* If there is data which was previously "refused" by upper layer */ + if (pcb->refused_data != NULL) { + if ((tcp_process_refused_data(pcb) == ERR_ABRT) || + ((pcb->refused_data != NULL) && (tcplen > 0))) { + /* pcb has been aborted or refused data is still refused and the new + segment contains data */ + if (pcb->rcv_ann_wnd == 0) { + /* this is a zero-window probe, we respond to it with current RCV.NXT + and drop the data segment */ + tcp_send_empty_ack(pcb); + } + TCP_STATS_INC(tcp.drop); + MIB2_STATS_INC(mib2.tcpinerrs); + goto aborted; + } + } + tcp_input_pcb = pcb; + err = tcp_process(pcb); + /* A return value of ERR_ABRT means that tcp_abort() was called + and that the pcb has been freed. If so, we don't do anything. */ + if (err != ERR_ABRT) { + if (recv_flags & TF_RESET) { + /* TF_RESET means that the connection was reset by the other + end. We then call the error callback to inform the + application that the connection is dead before we + deallocate the PCB. */ + TCP_EVENT_ERR(pcb->state, pcb->errf, pcb->callback_arg, ERR_RST); + tcp_pcb_remove(&tcp_active_pcbs, pcb); + tcp_free(pcb); + } else { + err = ERR_OK; + /* If the application has registered a "sent" function to be + called when new send buffer space is available, we call it + now. */ + if (recv_acked > 0) { + u16_t acked16; +#if LWIP_WND_SCALE + /* recv_acked is u32_t but the sent callback only takes a u16_t, + so we might have to call it multiple times. */ + u32_t acked = recv_acked; + while (acked > 0) { + acked16 = (u16_t)LWIP_MIN(acked, 0xffffu); + acked -= acked16; +#else + { + acked16 = recv_acked; +#endif + TCP_EVENT_SENT(pcb, (u16_t)acked16, err); + if (err == ERR_ABRT) { + goto aborted; + } + } + recv_acked = 0; + } + if (tcp_input_delayed_close(pcb)) { + goto aborted; + } +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + while (recv_data != NULL) { + struct pbuf *rest = NULL; + pbuf_split_64k(recv_data, &rest); +#else /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + if (recv_data != NULL) { +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + + LWIP_ASSERT("pcb->refused_data == NULL", pcb->refused_data == NULL); + if (pcb->flags & TF_RXCLOSED) { + /* received data although already closed -> abort (send RST) to + notify the remote host that not all data has been processed */ + pbuf_free(recv_data); +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + if (rest != NULL) { + pbuf_free(rest); + } +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + tcp_abort(pcb); + goto aborted; + } + + /* Notify application that data has been received. */ + TCP_EVENT_RECV(pcb, recv_data, ERR_OK, err); + if (err == ERR_ABRT) { +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + if (rest != NULL) { + pbuf_free(rest); + } +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + goto aborted; + } + + /* If the upper layer can't receive this data, store it */ + if (err != ERR_OK) { +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + if (rest != NULL) { + pbuf_cat(recv_data, rest); + } +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + pcb->refused_data = recv_data; + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: keep incoming packet, because pcb is \"full\"\n")); +#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE + break; + } else { + /* Upper layer received the data, go on with the rest if > 64K */ + recv_data = rest; +#endif /* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + } + } + + /* If a FIN segment was received, we call the callback + function with a NULL buffer to indicate EOF. */ + if (recv_flags & TF_GOT_FIN) { + if (pcb->refused_data != NULL) { + /* Delay this if we have refused data. */ + pcb->refused_data->flags |= PBUF_FLAG_TCP_FIN; + } else { + /* correct rcv_wnd as the application won't call tcp_recved() + for the FIN's seqno */ + if (pcb->rcv_wnd != TCP_WND_MAX(pcb)) { + pcb->rcv_wnd++; + } + TCP_EVENT_CLOSED(pcb, err); + if (err == ERR_ABRT) { + goto aborted; + } + } + } + + tcp_input_pcb = NULL; + if (tcp_input_delayed_close(pcb)) { + goto aborted; + } + /* Try to send something out. */ + tcp_output(pcb); +#if TCP_INPUT_DEBUG +#if TCP_DEBUG + tcp_debug_print_state(pcb->state); +#endif /* TCP_DEBUG */ +#endif /* TCP_INPUT_DEBUG */ + } + } + /* Jump target if pcb has been aborted in a callback (by calling tcp_abort()). + Below this line, 'pcb' may not be dereferenced! */ +aborted: + tcp_input_pcb = NULL; + recv_data = NULL; + + /* give up our reference to inseg.p */ + if (inseg.p != NULL) { + pbuf_free(inseg.p); + inseg.p = NULL; + } + } else { + /* If no matching PCB was found, send a TCP RST (reset) to the + sender. */ + LWIP_DEBUGF(TCP_RST_DEBUG, ("tcp_input: no PCB match found, resetting.\n")); + if (!(TCPH_FLAGS(tcphdr) & TCP_RST)) { + TCP_STATS_INC(tcp.proterr); + TCP_STATS_INC(tcp.drop); + tcp_rst(NULL, ackno, seqno + tcplen, ip_current_dest_addr(), + ip_current_src_addr(), tcphdr->dest, tcphdr->src); + } + pbuf_free(p); + } + + LWIP_ASSERT("tcp_input: tcp_pcbs_sane()", tcp_pcbs_sane()); + PERF_STOP("tcp_input"); + return; +dropped: + TCP_STATS_INC(tcp.drop); + MIB2_STATS_INC(mib2.tcpinerrs); + pbuf_free(p); +} + +/** Called from tcp_input to check for TF_CLOSED flag. This results in closing + * and deallocating a pcb at the correct place to ensure noone references it + * any more. + * @returns 1 if the pcb has been closed and deallocated, 0 otherwise + */ +static int +tcp_input_delayed_close(struct tcp_pcb *pcb) +{ + LWIP_ASSERT("tcp_input_delayed_close: invalid pcb", pcb != NULL); + + if (recv_flags & TF_CLOSED) { + /* The connection has been closed and we will deallocate the + PCB. */ + if (!(pcb->flags & TF_RXCLOSED)) { + /* Connection closed although the application has only shut down the + tx side: call the PCB's err callback and indicate the closure to + ensure the application doesn't continue using the PCB. */ + TCP_EVENT_ERR(pcb->state, pcb->errf, pcb->callback_arg, ERR_CLSD); + } + tcp_pcb_remove(&tcp_active_pcbs, pcb); + tcp_free(pcb); + return 1; + } + return 0; +} + +/** + * Called by tcp_input() when a segment arrives for a listening + * connection (from tcp_input()). + * + * @param pcb the tcp_pcb_listen for which a segment arrived + * + * @note the segment which arrived is saved in global variables, therefore only the pcb + * involved is passed as a parameter to this function + */ +static void +tcp_listen_input(struct tcp_pcb_listen *pcb) +{ + struct tcp_pcb *npcb; + u32_t iss; + err_t rc; + + if (flags & TCP_RST) { + /* An incoming RST should be ignored. Return. */ + return; + } + + LWIP_ASSERT("tcp_listen_input: invalid pcb", pcb != NULL); + + /* In the LISTEN state, we check for incoming SYN segments, + creates a new PCB, and responds with a SYN|ACK. */ + if (flags & TCP_ACK) { + /* For incoming segments with the ACK flag set, respond with a + RST. */ + LWIP_DEBUGF(TCP_RST_DEBUG, ("tcp_listen_input: ACK in LISTEN, sending reset\n")); + tcp_rst((const struct tcp_pcb *)pcb, ackno, seqno + tcplen, ip_current_dest_addr(), + ip_current_src_addr(), tcphdr->dest, tcphdr->src); + } else if (flags & TCP_SYN) { + LWIP_DEBUGF(TCP_DEBUG, ("TCP connection request %"U16_F" -> %"U16_F".\n", tcphdr->src, tcphdr->dest)); +#if TCP_LISTEN_BACKLOG + if (pcb->accepts_pending >= pcb->backlog) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_listen_input: listen backlog exceeded for port %"U16_F"\n", tcphdr->dest)); + return; + } +#endif /* TCP_LISTEN_BACKLOG */ + npcb = tcp_alloc(pcb->prio); + /* If a new PCB could not be created (probably due to lack of memory), + we don't do anything, but rely on the sender will retransmit the + SYN at a time when we have more memory available. */ + if (npcb == NULL) { + err_t err; + LWIP_DEBUGF(TCP_DEBUG, ("tcp_listen_input: could not allocate PCB\n")); + TCP_STATS_INC(tcp.memerr); + TCP_EVENT_ACCEPT(pcb, NULL, pcb->callback_arg, ERR_MEM, err); + LWIP_UNUSED_ARG(err); /* err not useful here */ + return; + } +#if TCP_LISTEN_BACKLOG + pcb->accepts_pending++; + tcp_set_flags(npcb, TF_BACKLOGPEND); +#endif /* TCP_LISTEN_BACKLOG */ + /* Set up the new PCB. */ + ip_addr_copy(npcb->local_ip, *ip_current_dest_addr()); + ip_addr_copy(npcb->remote_ip, *ip_current_src_addr()); + npcb->local_port = pcb->local_port; + +#if TUN2SOCKS + // go-tun2socks logic + // Always reset local port to the dest of the connection, because we are + // accepting all incomming connections, regardless of there destination addresses, + // as such, npcb is acting as the server socket that communicates with the + // client socket. + npcb->local_port = tcphdr->dest; +#endif /* TUN2SOCKS */ + + npcb->remote_port = tcphdr->src; + npcb->state = SYN_RCVD; + npcb->rcv_nxt = seqno + 1; + npcb->rcv_ann_right_edge = npcb->rcv_nxt; + iss = tcp_next_iss(npcb); + npcb->snd_wl2 = iss; + npcb->snd_nxt = iss; + npcb->lastack = iss; + npcb->snd_lbb = iss; + npcb->snd_wl1 = seqno - 1;/* initialise to seqno-1 to force window update */ + npcb->callback_arg = pcb->callback_arg; +#if LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG + npcb->listener = pcb; +#endif /* LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG */ + /* inherit socket options */ + npcb->so_options = pcb->so_options & SOF_INHERITED; + npcb->netif_idx = pcb->netif_idx; + /* Register the new PCB so that we can begin receiving segments + for it. */ + TCP_REG_ACTIVE(npcb); + + /* Parse any options in the SYN. */ + tcp_parseopt(npcb); + npcb->snd_wnd = tcphdr->wnd; + npcb->snd_wnd_max = npcb->snd_wnd; + +#if TCP_CALCULATE_EFF_SEND_MSS + npcb->mss = tcp_eff_send_mss(npcb->mss, &npcb->local_ip, &npcb->remote_ip); +#endif /* TCP_CALCULATE_EFF_SEND_MSS */ + + MIB2_STATS_INC(mib2.tcppassiveopens); + +#if LWIP_TCP_PCB_NUM_EXT_ARGS + if (tcp_ext_arg_invoke_callbacks_passive_open(pcb, npcb) != ERR_OK) { + tcp_abandon(npcb, 0); + return; + } +#endif + + /* Send a SYN|ACK together with the MSS option. */ + rc = tcp_enqueue_flags(npcb, TCP_SYN | TCP_ACK); + if (rc != ERR_OK) { + tcp_abandon(npcb, 0); + return; + } + tcp_output(npcb); + } + return; +} + +/** + * Called by tcp_input() when a segment arrives for a connection in + * TIME_WAIT. + * + * @param pcb the tcp_pcb for which a segment arrived + * + * @note the segment which arrived is saved in global variables, therefore only the pcb + * involved is passed as a parameter to this function + */ +static void +tcp_timewait_input(struct tcp_pcb *pcb) +{ + /* RFC 1337: in TIME_WAIT, ignore RST and ACK FINs + any 'acceptable' segments */ + /* RFC 793 3.9 Event Processing - Segment Arrives: + * - first check sequence number - we skip that one in TIME_WAIT (always + * acceptable since we only send ACKs) + * - second check the RST bit (... return) */ + if (flags & TCP_RST) { + return; + } + + LWIP_ASSERT("tcp_timewait_input: invalid pcb", pcb != NULL); + + /* - fourth, check the SYN bit, */ + if (flags & TCP_SYN) { + /* If an incoming segment is not acceptable, an acknowledgment + should be sent in reply */ + if (TCP_SEQ_BETWEEN(seqno, pcb->rcv_nxt, pcb->rcv_nxt + pcb->rcv_wnd)) { + /* If the SYN is in the window it is an error, send a reset */ + tcp_rst(pcb, ackno, seqno + tcplen, ip_current_dest_addr(), + ip_current_src_addr(), tcphdr->dest, tcphdr->src); + return; + } + } else if (flags & TCP_FIN) { + /* - eighth, check the FIN bit: Remain in the TIME-WAIT state. + Restart the 2 MSL time-wait timeout.*/ + pcb->tmr = tcp_ticks; + } + + if ((tcplen > 0)) { + /* Acknowledge data, FIN or out-of-window SYN */ + tcp_ack_now(pcb); + tcp_output(pcb); + } + return; +} + +/** + * Implements the TCP state machine. Called by tcp_input. In some + * states tcp_receive() is called to receive data. The tcp_seg + * argument will be freed by the caller (tcp_input()) unless the + * recv_data pointer in the pcb is set. + * + * @param pcb the tcp_pcb for which a segment arrived + * + * @note the segment which arrived is saved in global variables, therefore only the pcb + * involved is passed as a parameter to this function + */ +static err_t +tcp_process(struct tcp_pcb *pcb) +{ + struct tcp_seg *rseg; + u8_t acceptable = 0; + err_t err; + + err = ERR_OK; + + LWIP_ASSERT("tcp_process: invalid pcb", pcb != NULL); + + /* Process incoming RST segments. */ + if (flags & TCP_RST) { + /* First, determine if the reset is acceptable. */ + if (pcb->state == SYN_SENT) { + /* "In the SYN-SENT state (a RST received in response to an initial SYN), + the RST is acceptable if the ACK field acknowledges the SYN." */ + if (ackno == pcb->snd_nxt) { + acceptable = 1; + } + } else { + /* "In all states except SYN-SENT, all reset (RST) segments are validated + by checking their SEQ-fields." */ + if (seqno == pcb->rcv_nxt) { + acceptable = 1; + } else if (TCP_SEQ_BETWEEN(seqno, pcb->rcv_nxt, + pcb->rcv_nxt + pcb->rcv_wnd)) { + /* If the sequence number is inside the window, we send a challenge ACK + and wait for a re-send with matching sequence number. + This follows RFC 5961 section 3.2 and addresses CVE-2004-0230 + (RST spoofing attack), which is present in RFC 793 RST handling. */ + tcp_ack_now(pcb); + } + } + + if (acceptable) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_process: Connection RESET\n")); + LWIP_ASSERT("tcp_input: pcb->state != CLOSED", pcb->state != CLOSED); + recv_flags |= TF_RESET; + tcp_clear_flags(pcb, TF_ACK_DELAY); + return ERR_RST; + } else { + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_process: unacceptable reset seqno %"U32_F" rcv_nxt %"U32_F"\n", + seqno, pcb->rcv_nxt)); + LWIP_DEBUGF(TCP_DEBUG, ("tcp_process: unacceptable reset seqno %"U32_F" rcv_nxt %"U32_F"\n", + seqno, pcb->rcv_nxt)); + return ERR_OK; + } + } + + if ((flags & TCP_SYN) && (pcb->state != SYN_SENT && pcb->state != SYN_RCVD)) { + /* Cope with new connection attempt after remote end crashed */ + tcp_ack_now(pcb); + return ERR_OK; + } + + if ((pcb->flags & TF_RXCLOSED) == 0) { + /* Update the PCB (in)activity timer unless rx is closed (see tcp_shutdown) */ + pcb->tmr = tcp_ticks; + } + pcb->keep_cnt_sent = 0; + pcb->persist_probe = 0; + + tcp_parseopt(pcb); + + /* Do different things depending on the TCP state. */ + switch (pcb->state) { + case SYN_SENT: + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("SYN-SENT: ackno %"U32_F" pcb->snd_nxt %"U32_F" unacked %"U32_F"\n", ackno, + pcb->snd_nxt, lwip_ntohl(pcb->unacked->tcphdr->seqno))); + /* received SYN ACK with expected sequence number? */ + if ((flags & TCP_ACK) && (flags & TCP_SYN) + && (ackno == pcb->lastack + 1)) { + pcb->rcv_nxt = seqno + 1; + pcb->rcv_ann_right_edge = pcb->rcv_nxt; + pcb->lastack = ackno; + pcb->snd_wnd = tcphdr->wnd; + pcb->snd_wnd_max = pcb->snd_wnd; + pcb->snd_wl1 = seqno - 1; /* initialise to seqno - 1 to force window update */ + pcb->state = ESTABLISHED; + +#if TCP_CALCULATE_EFF_SEND_MSS + pcb->mss = tcp_eff_send_mss(pcb->mss, &pcb->local_ip, &pcb->remote_ip); +#endif /* TCP_CALCULATE_EFF_SEND_MSS */ + + pcb->cwnd = LWIP_TCP_CALC_INITIAL_CWND(pcb->mss); + LWIP_DEBUGF(TCP_CWND_DEBUG, ("tcp_process (SENT): cwnd %"TCPWNDSIZE_F + " ssthresh %"TCPWNDSIZE_F"\n", + pcb->cwnd, pcb->ssthresh)); + LWIP_ASSERT("pcb->snd_queuelen > 0", (pcb->snd_queuelen > 0)); + --pcb->snd_queuelen; + LWIP_DEBUGF(TCP_QLEN_DEBUG, ("tcp_process: SYN-SENT --queuelen %"TCPWNDSIZE_F"\n", (tcpwnd_size_t)pcb->snd_queuelen)); + rseg = pcb->unacked; + if (rseg == NULL) { + /* might happen if tcp_output fails in tcp_rexmit_rto() + in which case the segment is on the unsent list */ + rseg = pcb->unsent; + LWIP_ASSERT("no segment to free", rseg != NULL); + pcb->unsent = rseg->next; + } else { + pcb->unacked = rseg->next; + } + tcp_seg_free(rseg); + + /* If there's nothing left to acknowledge, stop the retransmit + timer, otherwise reset it to start again */ + if (pcb->unacked == NULL) { + pcb->rtime = -1; + } else { + pcb->rtime = 0; + pcb->nrtx = 0; + } + + /* Call the user specified function to call when successfully + * connected. */ + TCP_EVENT_CONNECTED(pcb, ERR_OK, err); + if (err == ERR_ABRT) { + return ERR_ABRT; + } + tcp_ack_now(pcb); + } + /* received ACK? possibly a half-open connection */ + else if (flags & TCP_ACK) { + /* send a RST to bring the other side in a non-synchronized state. */ + tcp_rst(pcb, ackno, seqno + tcplen, ip_current_dest_addr(), + ip_current_src_addr(), tcphdr->dest, tcphdr->src); + /* Resend SYN immediately (don't wait for rto timeout) to establish + connection faster, but do not send more SYNs than we otherwise would + have, or we might get caught in a loop on loopback interfaces. */ + if (pcb->nrtx < TCP_SYNMAXRTX) { + pcb->rtime = 0; + tcp_rexmit_rto(pcb); + } + } + break; + case SYN_RCVD: + if (flags & TCP_ACK) { + /* expected ACK number? */ + if (TCP_SEQ_BETWEEN(ackno, pcb->lastack + 1, pcb->snd_nxt)) { + pcb->state = ESTABLISHED; + LWIP_DEBUGF(TCP_DEBUG, ("TCP connection established %"U16_F" -> %"U16_F".\n", inseg.tcphdr->src, inseg.tcphdr->dest)); +#if LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG + if (pcb->listener == NULL) { + /* listen pcb might be closed by now */ + err = ERR_VAL; + } else +#endif /* LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG */ + { +#if LWIP_CALLBACK_API + LWIP_ASSERT("pcb->listener->accept != NULL", pcb->listener->accept != NULL); +#endif + tcp_backlog_accepted(pcb); + /* Call the accept function. */ + TCP_EVENT_ACCEPT(pcb->listener, pcb, pcb->callback_arg, ERR_OK, err); + } + if (err != ERR_OK) { + /* If the accept function returns with an error, we abort + * the connection. */ + /* Already aborted? */ + if (err != ERR_ABRT) { + tcp_abort(pcb); + } + return ERR_ABRT; + } + /* If there was any data contained within this ACK, + * we'd better pass it on to the application as well. */ + tcp_receive(pcb); + + /* Prevent ACK for SYN to generate a sent event */ + if (recv_acked != 0) { + recv_acked--; + } + + pcb->cwnd = LWIP_TCP_CALC_INITIAL_CWND(pcb->mss); + LWIP_DEBUGF(TCP_CWND_DEBUG, ("tcp_process (SYN_RCVD): cwnd %"TCPWNDSIZE_F + " ssthresh %"TCPWNDSIZE_F"\n", + pcb->cwnd, pcb->ssthresh)); + + if (recv_flags & TF_GOT_FIN) { + tcp_ack_now(pcb); + pcb->state = CLOSE_WAIT; + } + } else { + /* incorrect ACK number, send RST */ + tcp_rst(pcb, ackno, seqno + tcplen, ip_current_dest_addr(), + ip_current_src_addr(), tcphdr->dest, tcphdr->src); + } + } else if ((flags & TCP_SYN) && (seqno == pcb->rcv_nxt - 1)) { + /* Looks like another copy of the SYN - retransmit our SYN-ACK */ + tcp_rexmit(pcb); + } + break; + case CLOSE_WAIT: + /* FALLTHROUGH */ + case ESTABLISHED: + tcp_receive(pcb); + if (recv_flags & TF_GOT_FIN) { /* passive close */ + tcp_ack_now(pcb); + pcb->state = CLOSE_WAIT; + } + break; + case FIN_WAIT_1: + tcp_receive(pcb); + if (recv_flags & TF_GOT_FIN) { + if ((flags & TCP_ACK) && (ackno == pcb->snd_nxt) && + pcb->unsent == NULL) { + LWIP_DEBUGF(TCP_DEBUG, + ("TCP connection closed: FIN_WAIT_1 %"U16_F" -> %"U16_F".\n", inseg.tcphdr->src, inseg.tcphdr->dest)); + tcp_ack_now(pcb); + tcp_pcb_purge(pcb); + TCP_RMV_ACTIVE(pcb); + pcb->state = TIME_WAIT; + TCP_REG(&tcp_tw_pcbs, pcb); + } else { + tcp_ack_now(pcb); + pcb->state = CLOSING; + } + } else if ((flags & TCP_ACK) && (ackno == pcb->snd_nxt) && + pcb->unsent == NULL) { + pcb->state = FIN_WAIT_2; + } + break; + case FIN_WAIT_2: + tcp_receive(pcb); + if (recv_flags & TF_GOT_FIN) { + LWIP_DEBUGF(TCP_DEBUG, ("TCP connection closed: FIN_WAIT_2 %"U16_F" -> %"U16_F".\n", inseg.tcphdr->src, inseg.tcphdr->dest)); + tcp_ack_now(pcb); + tcp_pcb_purge(pcb); + TCP_RMV_ACTIVE(pcb); + pcb->state = TIME_WAIT; + TCP_REG(&tcp_tw_pcbs, pcb); + } + break; + case CLOSING: + tcp_receive(pcb); + if ((flags & TCP_ACK) && ackno == pcb->snd_nxt && pcb->unsent == NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("TCP connection closed: CLOSING %"U16_F" -> %"U16_F".\n", inseg.tcphdr->src, inseg.tcphdr->dest)); + tcp_pcb_purge(pcb); + TCP_RMV_ACTIVE(pcb); + pcb->state = TIME_WAIT; + TCP_REG(&tcp_tw_pcbs, pcb); + } + break; + case LAST_ACK: + tcp_receive(pcb); + if ((flags & TCP_ACK) && ackno == pcb->snd_nxt && pcb->unsent == NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("TCP connection closed: LAST_ACK %"U16_F" -> %"U16_F".\n", inseg.tcphdr->src, inseg.tcphdr->dest)); + /* bugfix #21699: don't set pcb->state to CLOSED here or we risk leaking segments */ + recv_flags |= TF_CLOSED; + } + break; + default: + break; + } + return ERR_OK; +} + +#if TCP_QUEUE_OOSEQ +/** + * Insert segment into the list (segments covered with new one will be deleted) + * + * Called from tcp_receive() + */ +static void +tcp_oos_insert_segment(struct tcp_seg *cseg, struct tcp_seg *next) +{ + struct tcp_seg *old_seg; + + LWIP_ASSERT("tcp_oos_insert_segment: invalid cseg", cseg != NULL); + + if (TCPH_FLAGS(cseg->tcphdr) & TCP_FIN) { + /* received segment overlaps all following segments */ + tcp_segs_free(next); + next = NULL; + } else { + /* delete some following segments + oos queue may have segments with FIN flag */ + while (next && + TCP_SEQ_GEQ((seqno + cseg->len), + (next->tcphdr->seqno + next->len))) { + /* cseg with FIN already processed */ + if (TCPH_FLAGS(next->tcphdr) & TCP_FIN) { + TCPH_SET_FLAG(cseg->tcphdr, TCP_FIN); + } + old_seg = next; + next = next->next; + tcp_seg_free(old_seg); + } + if (next && + TCP_SEQ_GT(seqno + cseg->len, next->tcphdr->seqno)) { + /* We need to trim the incoming segment. */ + cseg->len = (u16_t)(next->tcphdr->seqno - seqno); + pbuf_realloc(cseg->p, cseg->len); + } + } + cseg->next = next; +} +#endif /* TCP_QUEUE_OOSEQ */ + +/** Remove segments from a list if the incoming ACK acknowledges them */ +static struct tcp_seg * +tcp_free_acked_segments(struct tcp_pcb *pcb, struct tcp_seg *seg_list, const char *dbg_list_name, + struct tcp_seg *dbg_other_seg_list) +{ + struct tcp_seg *next; + u16_t clen; + + LWIP_UNUSED_ARG(dbg_list_name); + LWIP_UNUSED_ARG(dbg_other_seg_list); + + while (seg_list != NULL && + TCP_SEQ_LEQ(lwip_ntohl(seg_list->tcphdr->seqno) + + TCP_TCPLEN(seg_list), ackno)) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_receive: removing %"U32_F":%"U32_F" from pcb->%s\n", + lwip_ntohl(seg_list->tcphdr->seqno), + lwip_ntohl(seg_list->tcphdr->seqno) + TCP_TCPLEN(seg_list), + dbg_list_name)); + + next = seg_list; + seg_list = seg_list->next; + + clen = pbuf_clen(next->p); + LWIP_DEBUGF(TCP_QLEN_DEBUG, ("tcp_receive: queuelen %"TCPWNDSIZE_F" ... ", + (tcpwnd_size_t)pcb->snd_queuelen)); + LWIP_ASSERT("pcb->snd_queuelen >= pbuf_clen(next->p)", (pcb->snd_queuelen >= clen)); + + pcb->snd_queuelen = (u16_t)(pcb->snd_queuelen - clen); + recv_acked = (tcpwnd_size_t)(recv_acked + next->len); + tcp_seg_free(next); + + LWIP_DEBUGF(TCP_QLEN_DEBUG, ("%"TCPWNDSIZE_F" (after freeing %s)\n", + (tcpwnd_size_t)pcb->snd_queuelen, + dbg_list_name)); + if (pcb->snd_queuelen != 0) { + LWIP_ASSERT("tcp_receive: valid queue length", + seg_list != NULL || dbg_other_seg_list != NULL); + } + } + return seg_list; +} + +/** + * Called by tcp_process. Checks if the given segment is an ACK for outstanding + * data, and if so frees the memory of the buffered data. Next, it places the + * segment on any of the receive queues (pcb->recved or pcb->ooseq). If the segment + * is buffered, the pbuf is referenced by pbuf_ref so that it will not be freed until + * it has been removed from the buffer. + * + * If the incoming segment constitutes an ACK for a segment that was used for RTT + * estimation, the RTT is estimated here as well. + * + * Called from tcp_process(). + */ +static void +tcp_receive(struct tcp_pcb *pcb) +{ + s16_t m; + u32_t right_wnd_edge; + int found_dupack = 0; + + LWIP_ASSERT("tcp_receive: invalid pcb", pcb != NULL); + LWIP_ASSERT("tcp_receive: wrong state", pcb->state >= ESTABLISHED); + + if (flags & TCP_ACK) { + right_wnd_edge = pcb->snd_wnd + pcb->snd_wl2; + + /* Update window. */ + if (TCP_SEQ_LT(pcb->snd_wl1, seqno) || + (pcb->snd_wl1 == seqno && TCP_SEQ_LT(pcb->snd_wl2, ackno)) || + (pcb->snd_wl2 == ackno && (u32_t)SND_WND_SCALE(pcb, tcphdr->wnd) > pcb->snd_wnd)) { + pcb->snd_wnd = SND_WND_SCALE(pcb, tcphdr->wnd); + /* keep track of the biggest window announced by the remote host to calculate + the maximum segment size */ + if (pcb->snd_wnd_max < pcb->snd_wnd) { + pcb->snd_wnd_max = pcb->snd_wnd; + } + pcb->snd_wl1 = seqno; + pcb->snd_wl2 = ackno; + LWIP_DEBUGF(TCP_WND_DEBUG, ("tcp_receive: window update %"TCPWNDSIZE_F"\n", pcb->snd_wnd)); +#if TCP_WND_DEBUG + } else { + if (pcb->snd_wnd != (tcpwnd_size_t)SND_WND_SCALE(pcb, tcphdr->wnd)) { + LWIP_DEBUGF(TCP_WND_DEBUG, + ("tcp_receive: no window update lastack %"U32_F" ackno %" + U32_F" wl1 %"U32_F" seqno %"U32_F" wl2 %"U32_F"\n", + pcb->lastack, ackno, pcb->snd_wl1, seqno, pcb->snd_wl2)); + } +#endif /* TCP_WND_DEBUG */ + } + + /* (From Stevens TCP/IP Illustrated Vol II, p970.) Its only a + * duplicate ack if: + * 1) It doesn't ACK new data + * 2) length of received packet is zero (i.e. no payload) + * 3) the advertised window hasn't changed + * 4) There is outstanding unacknowledged data (retransmission timer running) + * 5) The ACK is == biggest ACK sequence number so far seen (snd_una) + * + * If it passes all five, should process as a dupack: + * a) dupacks < 3: do nothing + * b) dupacks == 3: fast retransmit + * c) dupacks > 3: increase cwnd + * + * If it only passes 1-3, should reset dupack counter (and add to + * stats, which we don't do in lwIP) + * + * If it only passes 1, should reset dupack counter + * + */ + + /* Clause 1 */ + if (TCP_SEQ_LEQ(ackno, pcb->lastack)) { + /* Clause 2 */ + if (tcplen == 0) { + /* Clause 3 */ + if (pcb->snd_wl2 + pcb->snd_wnd == right_wnd_edge) { + /* Clause 4 */ + if (pcb->rtime >= 0) { + /* Clause 5 */ + if (pcb->lastack == ackno) { + found_dupack = 1; + if ((u8_t)(pcb->dupacks + 1) > pcb->dupacks) { + ++pcb->dupacks; + } + if (pcb->dupacks > 3) { + /* Inflate the congestion window */ + TCP_WND_INC(pcb->cwnd, pcb->mss); + } + if (pcb->dupacks >= 3) { + /* Do fast retransmit (checked via TF_INFR, not via dupacks count) */ + tcp_rexmit_fast(pcb); + } + } + } + } + } + /* If Clause (1) or more is true, but not a duplicate ack, reset + * count of consecutive duplicate acks */ + if (!found_dupack) { + pcb->dupacks = 0; + } + } else if (TCP_SEQ_BETWEEN(ackno, pcb->lastack + 1, pcb->snd_nxt)) { + /* We come here when the ACK acknowledges new data. */ + tcpwnd_size_t acked; + + /* Reset the "IN Fast Retransmit" flag, since we are no longer + in fast retransmit. Also reset the congestion window to the + slow start threshold. */ + if (pcb->flags & TF_INFR) { + tcp_clear_flags(pcb, TF_INFR); + pcb->cwnd = pcb->ssthresh; + pcb->bytes_acked = 0; + } + + /* Reset the number of retransmissions. */ + pcb->nrtx = 0; + + /* Reset the retransmission time-out. */ + pcb->rto = (s16_t)((pcb->sa >> 3) + pcb->sv); + + /* Record how much data this ACK acks */ + acked = (tcpwnd_size_t)(ackno - pcb->lastack); + + /* Reset the fast retransmit variables. */ + pcb->dupacks = 0; + pcb->lastack = ackno; + + /* Update the congestion control variables (cwnd and + ssthresh). */ + if (pcb->state >= ESTABLISHED) { + if (pcb->cwnd < pcb->ssthresh) { + tcpwnd_size_t increase; + /* limit to 1 SMSS segment during period following RTO */ + u8_t num_seg = (pcb->flags & TF_RTO) ? 1 : 2; + /* RFC 3465, section 2.2 Slow Start */ + increase = LWIP_MIN(acked, (tcpwnd_size_t)(num_seg * pcb->mss)); + TCP_WND_INC(pcb->cwnd, increase); + LWIP_DEBUGF(TCP_CWND_DEBUG, ("tcp_receive: slow start cwnd %"TCPWNDSIZE_F"\n", pcb->cwnd)); + } else { + /* RFC 3465, section 2.1 Congestion Avoidance */ + TCP_WND_INC(pcb->bytes_acked, acked); + if (pcb->bytes_acked >= pcb->cwnd) { + pcb->bytes_acked = (tcpwnd_size_t)(pcb->bytes_acked - pcb->cwnd); + TCP_WND_INC(pcb->cwnd, pcb->mss); + } + LWIP_DEBUGF(TCP_CWND_DEBUG, ("tcp_receive: congestion avoidance cwnd %"TCPWNDSIZE_F"\n", pcb->cwnd)); + } + } + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_receive: ACK for %"U32_F", unacked->seqno %"U32_F":%"U32_F"\n", + ackno, + pcb->unacked != NULL ? + lwip_ntohl(pcb->unacked->tcphdr->seqno) : 0, + pcb->unacked != NULL ? + lwip_ntohl(pcb->unacked->tcphdr->seqno) + TCP_TCPLEN(pcb->unacked) : 0)); + + /* Remove segment from the unacknowledged list if the incoming + ACK acknowledges them. */ + pcb->unacked = tcp_free_acked_segments(pcb, pcb->unacked, "unacked", pcb->unsent); + /* We go through the ->unsent list to see if any of the segments + on the list are acknowledged by the ACK. This may seem + strange since an "unsent" segment shouldn't be acked. The + rationale is that lwIP puts all outstanding segments on the + ->unsent list after a retransmission, so these segments may + in fact have been sent once. */ + pcb->unsent = tcp_free_acked_segments(pcb, pcb->unsent, "unsent", pcb->unacked); + + /* If there's nothing left to acknowledge, stop the retransmit + timer, otherwise reset it to start again */ + if (pcb->unacked == NULL) { + pcb->rtime = -1; + } else { + pcb->rtime = 0; + } + + pcb->polltmr = 0; + +#if TCP_OVERSIZE + if (pcb->unsent == NULL) { + pcb->unsent_oversize = 0; + } +#endif /* TCP_OVERSIZE */ + +#if LWIP_IPV6 && LWIP_ND6_TCP_REACHABILITY_HINTS + if (ip_current_is_v6()) { + /* Inform neighbor reachability of forward progress. */ + nd6_reachability_hint(ip6_current_src_addr()); + } +#endif /* LWIP_IPV6 && LWIP_ND6_TCP_REACHABILITY_HINTS*/ + + pcb->snd_buf = (tcpwnd_size_t)(pcb->snd_buf + recv_acked); + /* check if this ACK ends our retransmission of in-flight data */ + if (pcb->flags & TF_RTO) { + /* RTO is done if + 1) both queues are empty or + 2) unacked is empty and unsent head contains data not part of RTO or + 3) unacked head contains data not part of RTO */ + if (pcb->unacked == NULL) { + if ((pcb->unsent == NULL) || + (TCP_SEQ_LEQ(pcb->rto_end, lwip_ntohl(pcb->unsent->tcphdr->seqno)))) { + tcp_clear_flags(pcb, TF_RTO); + } + } else if (TCP_SEQ_LEQ(pcb->rto_end, lwip_ntohl(pcb->unacked->tcphdr->seqno))) { + tcp_clear_flags(pcb, TF_RTO); + } + } + /* End of ACK for new data processing. */ + } else { + /* Out of sequence ACK, didn't really ack anything */ + tcp_send_empty_ack(pcb); + } + + LWIP_DEBUGF(TCP_RTO_DEBUG, ("tcp_receive: pcb->rttest %"U32_F" rtseq %"U32_F" ackno %"U32_F"\n", + pcb->rttest, pcb->rtseq, ackno)); + + /* RTT estimation calculations. This is done by checking if the + incoming segment acknowledges the segment we use to take a + round-trip time measurement. */ + if (pcb->rttest && TCP_SEQ_LT(pcb->rtseq, ackno)) { + /* diff between this shouldn't exceed 32K since this are tcp timer ticks + and a round-trip shouldn't be that long... */ + m = (s16_t)(tcp_ticks - pcb->rttest); + + LWIP_DEBUGF(TCP_RTO_DEBUG, ("tcp_receive: experienced rtt %"U16_F" ticks (%"U16_F" msec).\n", + m, (u16_t)(m * TCP_SLOW_INTERVAL))); + + /* This is taken directly from VJs original code in his paper */ + m = (s16_t)(m - (pcb->sa >> 3)); + pcb->sa = (s16_t)(pcb->sa + m); + if (m < 0) { + m = (s16_t) - m; + } + m = (s16_t)(m - (pcb->sv >> 2)); + pcb->sv = (s16_t)(pcb->sv + m); + pcb->rto = (s16_t)((pcb->sa >> 3) + pcb->sv); + + LWIP_DEBUGF(TCP_RTO_DEBUG, ("tcp_receive: RTO %"U16_F" (%"U16_F" milliseconds)\n", + pcb->rto, (u16_t)(pcb->rto * TCP_SLOW_INTERVAL))); + + pcb->rttest = 0; + } + } + + /* If the incoming segment contains data, we must process it + further unless the pcb already received a FIN. + (RFC 793, chapter 3.9, "SEGMENT ARRIVES" in states CLOSE-WAIT, CLOSING, + LAST-ACK and TIME-WAIT: "Ignore the segment text.") */ + if ((tcplen > 0) && (pcb->state < CLOSE_WAIT)) { + /* This code basically does three things: + + +) If the incoming segment contains data that is the next + in-sequence data, this data is passed to the application. This + might involve trimming the first edge of the data. The rcv_nxt + variable and the advertised window are adjusted. + + +) If the incoming segment has data that is above the next + sequence number expected (->rcv_nxt), the segment is placed on + the ->ooseq queue. This is done by finding the appropriate + place in the ->ooseq queue (which is ordered by sequence + number) and trim the segment in both ends if needed. An + immediate ACK is sent to indicate that we received an + out-of-sequence segment. + + +) Finally, we check if the first segment on the ->ooseq queue + now is in sequence (i.e., if rcv_nxt >= ooseq->seqno). If + rcv_nxt > ooseq->seqno, we must trim the first edge of the + segment on ->ooseq before we adjust rcv_nxt. The data in the + segments that are now on sequence are chained onto the + incoming segment so that we only need to call the application + once. + */ + + /* First, we check if we must trim the first edge. We have to do + this if the sequence number of the incoming segment is less + than rcv_nxt, and the sequence number plus the length of the + segment is larger than rcv_nxt. */ + /* if (TCP_SEQ_LT(seqno, pcb->rcv_nxt)) { + if (TCP_SEQ_LT(pcb->rcv_nxt, seqno + tcplen)) {*/ + if (TCP_SEQ_BETWEEN(pcb->rcv_nxt, seqno + 1, seqno + tcplen - 1)) { + /* Trimming the first edge is done by pushing the payload + pointer in the pbuf downwards. This is somewhat tricky since + we do not want to discard the full contents of the pbuf up to + the new starting point of the data since we have to keep the + TCP header which is present in the first pbuf in the chain. + + What is done is really quite a nasty hack: the first pbuf in + the pbuf chain is pointed to by inseg.p. Since we need to be + able to deallocate the whole pbuf, we cannot change this + inseg.p pointer to point to any of the later pbufs in the + chain. Instead, we point the ->payload pointer in the first + pbuf to data in one of the later pbufs. We also set the + inseg.data pointer to point to the right place. This way, the + ->p pointer will still point to the first pbuf, but the + ->p->payload pointer will point to data in another pbuf. + + After we are done with adjusting the pbuf pointers we must + adjust the ->data pointer in the seg and the segment + length.*/ + + struct pbuf *p = inseg.p; + u32_t off32 = pcb->rcv_nxt - seqno; + u16_t new_tot_len, off; + LWIP_ASSERT("inseg.p != NULL", inseg.p); + LWIP_ASSERT("insane offset!", (off32 < 0xffff)); + off = (u16_t)off32; + LWIP_ASSERT("pbuf too short!", (((s32_t)inseg.p->tot_len) >= off)); + inseg.len -= off; + new_tot_len = (u16_t)(inseg.p->tot_len - off); + while (p->len < off) { + off -= p->len; + /* all pbufs up to and including this one have len==0, so tot_len is equal */ + p->tot_len = new_tot_len; + p->len = 0; + p = p->next; + } + /* cannot fail... */ + pbuf_remove_header(p, off); + inseg.tcphdr->seqno = seqno = pcb->rcv_nxt; + } else { + if (TCP_SEQ_LT(seqno, pcb->rcv_nxt)) { + /* the whole segment is < rcv_nxt */ + /* must be a duplicate of a packet that has already been correctly handled */ + + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_receive: duplicate seqno %"U32_F"\n", seqno)); + tcp_ack_now(pcb); + } + } + + /* The sequence number must be within the window (above rcv_nxt + and below rcv_nxt + rcv_wnd) in order to be further + processed. */ + if (TCP_SEQ_BETWEEN(seqno, pcb->rcv_nxt, + pcb->rcv_nxt + pcb->rcv_wnd - 1)) { + if (pcb->rcv_nxt == seqno) { + /* The incoming segment is the next in sequence. We check if + we have to trim the end of the segment and update rcv_nxt + and pass the data to the application. */ + tcplen = TCP_TCPLEN(&inseg); + + if (tcplen > pcb->rcv_wnd) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, + ("tcp_receive: other end overran receive window" + "seqno %"U32_F" len %"U16_F" right edge %"U32_F"\n", + seqno, tcplen, pcb->rcv_nxt + pcb->rcv_wnd)); + if (TCPH_FLAGS(inseg.tcphdr) & TCP_FIN) { + /* Must remove the FIN from the header as we're trimming + * that byte of sequence-space from the packet */ + TCPH_FLAGS_SET(inseg.tcphdr, TCPH_FLAGS(inseg.tcphdr) & ~(unsigned int)TCP_FIN); + } + /* Adjust length of segment to fit in the window. */ + TCPWND_CHECK16(pcb->rcv_wnd); + inseg.len = (u16_t)pcb->rcv_wnd; + if (TCPH_FLAGS(inseg.tcphdr) & TCP_SYN) { + inseg.len -= 1; + } + pbuf_realloc(inseg.p, inseg.len); + tcplen = TCP_TCPLEN(&inseg); + LWIP_ASSERT("tcp_receive: segment not trimmed correctly to rcv_wnd\n", + (seqno + tcplen) == (pcb->rcv_nxt + pcb->rcv_wnd)); + } +#if TCP_QUEUE_OOSEQ + /* Received in-sequence data, adjust ooseq data if: + - FIN has been received or + - inseq overlaps with ooseq */ + if (pcb->ooseq != NULL) { + if (TCPH_FLAGS(inseg.tcphdr) & TCP_FIN) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, + ("tcp_receive: received in-order FIN, binning ooseq queue\n")); + /* Received in-order FIN means anything that was received + * out of order must now have been received in-order, so + * bin the ooseq queue */ + while (pcb->ooseq != NULL) { + struct tcp_seg *old_ooseq = pcb->ooseq; + pcb->ooseq = pcb->ooseq->next; + tcp_seg_free(old_ooseq); + } + } else { + struct tcp_seg *next = pcb->ooseq; + /* Remove all segments on ooseq that are covered by inseg already. + * FIN is copied from ooseq to inseg if present. */ + while (next && + TCP_SEQ_GEQ(seqno + tcplen, + next->tcphdr->seqno + next->len)) { + struct tcp_seg *tmp; + /* inseg cannot have FIN here (already processed above) */ + if ((TCPH_FLAGS(next->tcphdr) & TCP_FIN) != 0 && + (TCPH_FLAGS(inseg.tcphdr) & TCP_SYN) == 0) { + TCPH_SET_FLAG(inseg.tcphdr, TCP_FIN); + tcplen = TCP_TCPLEN(&inseg); + } + tmp = next; + next = next->next; + tcp_seg_free(tmp); + } + /* Now trim right side of inseg if it overlaps with the first + * segment on ooseq */ + if (next && + TCP_SEQ_GT(seqno + tcplen, + next->tcphdr->seqno)) { + /* inseg cannot have FIN here (already processed above) */ + inseg.len = (u16_t)(next->tcphdr->seqno - seqno); + if (TCPH_FLAGS(inseg.tcphdr) & TCP_SYN) { + inseg.len -= 1; + } + pbuf_realloc(inseg.p, inseg.len); + tcplen = TCP_TCPLEN(&inseg); + LWIP_ASSERT("tcp_receive: segment not trimmed correctly to ooseq queue\n", + (seqno + tcplen) == next->tcphdr->seqno); + } + pcb->ooseq = next; + } + } +#endif /* TCP_QUEUE_OOSEQ */ + + pcb->rcv_nxt = seqno + tcplen; + + /* Update the receiver's (our) window. */ + LWIP_ASSERT("tcp_receive: tcplen > rcv_wnd\n", pcb->rcv_wnd >= tcplen); + pcb->rcv_wnd -= tcplen; + + tcp_update_rcv_ann_wnd(pcb); + + /* If there is data in the segment, we make preparations to + pass this up to the application. The ->recv_data variable + is used for holding the pbuf that goes to the + application. The code for reassembling out-of-sequence data + chains its data on this pbuf as well. + + If the segment was a FIN, we set the TF_GOT_FIN flag that will + be used to indicate to the application that the remote side has + closed its end of the connection. */ + if (inseg.p->tot_len > 0) { + recv_data = inseg.p; + /* Since this pbuf now is the responsibility of the + application, we delete our reference to it so that we won't + (mistakingly) deallocate it. */ + inseg.p = NULL; + } + if (TCPH_FLAGS(inseg.tcphdr) & TCP_FIN) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_receive: received FIN.\n")); + recv_flags |= TF_GOT_FIN; + } + +#if TCP_QUEUE_OOSEQ + /* We now check if we have segments on the ->ooseq queue that + are now in sequence. */ + while (pcb->ooseq != NULL && + pcb->ooseq->tcphdr->seqno == pcb->rcv_nxt) { + + struct tcp_seg *cseg = pcb->ooseq; + seqno = pcb->ooseq->tcphdr->seqno; + + pcb->rcv_nxt += TCP_TCPLEN(cseg); + LWIP_ASSERT("tcp_receive: ooseq tcplen > rcv_wnd\n", + pcb->rcv_wnd >= TCP_TCPLEN(cseg)); + pcb->rcv_wnd -= TCP_TCPLEN(cseg); + + tcp_update_rcv_ann_wnd(pcb); + + if (cseg->p->tot_len > 0) { + /* Chain this pbuf onto the pbuf that we will pass to + the application. */ + /* With window scaling, this can overflow recv_data->tot_len, but + that's not a problem since we explicitly fix that before passing + recv_data to the application. */ + if (recv_data) { + pbuf_cat(recv_data, cseg->p); + } else { + recv_data = cseg->p; + } + cseg->p = NULL; + } + if (TCPH_FLAGS(cseg->tcphdr) & TCP_FIN) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_receive: dequeued FIN.\n")); + recv_flags |= TF_GOT_FIN; + if (pcb->state == ESTABLISHED) { /* force passive close or we can move to active close */ + pcb->state = CLOSE_WAIT; + } + } + + pcb->ooseq = cseg->next; + tcp_seg_free(cseg); + } +#if LWIP_TCP_SACK_OUT + if (pcb->flags & TF_SACK) { + if (pcb->ooseq != NULL) { + /* Some segments may have been removed from ooseq, let's remove all SACKs that + describe anything before the new beginning of that list. */ + tcp_remove_sacks_lt(pcb, pcb->ooseq->tcphdr->seqno); + } else if (LWIP_TCP_SACK_VALID(pcb, 0)) { + /* ooseq has been cleared. Nothing to SACK */ + memset(pcb->rcv_sacks, 0, sizeof(pcb->rcv_sacks)); + } + } +#endif /* LWIP_TCP_SACK_OUT */ +#endif /* TCP_QUEUE_OOSEQ */ + + + /* Acknowledge the segment(s). */ + tcp_ack(pcb); + +#if LWIP_TCP_SACK_OUT + if (LWIP_TCP_SACK_VALID(pcb, 0)) { + /* Normally the ACK for the data received could be piggy-backed on a data packet, + but lwIP currently does not support including SACKs in data packets. So we force + it to respond with an empty ACK packet (only if there is at least one SACK to be sent). + NOTE: tcp_send_empty_ack() on success clears the ACK flags (set by tcp_ack()) */ + tcp_send_empty_ack(pcb); + } +#endif /* LWIP_TCP_SACK_OUT */ + +#if LWIP_IPV6 && LWIP_ND6_TCP_REACHABILITY_HINTS + if (ip_current_is_v6()) { + /* Inform neighbor reachability of forward progress. */ + nd6_reachability_hint(ip6_current_src_addr()); + } +#endif /* LWIP_IPV6 && LWIP_ND6_TCP_REACHABILITY_HINTS*/ + + } else { + /* We get here if the incoming segment is out-of-sequence. */ + +#if TCP_QUEUE_OOSEQ + /* We queue the segment on the ->ooseq queue. */ + if (pcb->ooseq == NULL) { + pcb->ooseq = tcp_seg_copy(&inseg); +#if LWIP_TCP_SACK_OUT + if (pcb->flags & TF_SACK) { + /* All the SACKs should be invalid, so we can simply store the most recent one: */ + pcb->rcv_sacks[0].left = seqno; + pcb->rcv_sacks[0].right = seqno + inseg.len; + } +#endif /* LWIP_TCP_SACK_OUT */ + } else { + /* If the queue is not empty, we walk through the queue and + try to find a place where the sequence number of the + incoming segment is between the sequence numbers of the + previous and the next segment on the ->ooseq queue. That is + the place where we put the incoming segment. If needed, we + trim the second edges of the previous and the incoming + segment so that it will fit into the sequence. + + If the incoming segment has the same sequence number as a + segment on the ->ooseq queue, we discard the segment that + contains less data. */ + +#if LWIP_TCP_SACK_OUT + /* This is the left edge of the lowest possible SACK range. + It may start before the newly received segment (possibly adjusted below). */ + u32_t sackbeg = TCP_SEQ_LT(seqno, pcb->ooseq->tcphdr->seqno) ? seqno : pcb->ooseq->tcphdr->seqno; +#endif /* LWIP_TCP_SACK_OUT */ + struct tcp_seg *next, *prev = NULL; + for (next = pcb->ooseq; next != NULL; next = next->next) { + if (seqno == next->tcphdr->seqno) { + /* The sequence number of the incoming segment is the + same as the sequence number of the segment on + ->ooseq. We check the lengths to see which one to + discard. */ + if (inseg.len > next->len) { + /* The incoming segment is larger than the old + segment. We replace some segments with the new + one. */ + struct tcp_seg *cseg = tcp_seg_copy(&inseg); + if (cseg != NULL) { + if (prev != NULL) { + prev->next = cseg; + } else { + pcb->ooseq = cseg; + } + tcp_oos_insert_segment(cseg, next); + } + break; + } else { + /* Either the lengths are the same or the incoming + segment was smaller than the old one; in either + case, we ditch the incoming segment. */ + break; + } + } else { + if (prev == NULL) { + if (TCP_SEQ_LT(seqno, next->tcphdr->seqno)) { + /* The sequence number of the incoming segment is lower + than the sequence number of the first segment on the + queue. We put the incoming segment first on the + queue. */ + struct tcp_seg *cseg = tcp_seg_copy(&inseg); + if (cseg != NULL) { + pcb->ooseq = cseg; + tcp_oos_insert_segment(cseg, next); + } + break; + } + } else { + /*if (TCP_SEQ_LT(prev->tcphdr->seqno, seqno) && + TCP_SEQ_LT(seqno, next->tcphdr->seqno)) {*/ + if (TCP_SEQ_BETWEEN(seqno, prev->tcphdr->seqno + 1, next->tcphdr->seqno - 1)) { + /* The sequence number of the incoming segment is in + between the sequence numbers of the previous and + the next segment on ->ooseq. We trim trim the previous + segment, delete next segments that included in received segment + and trim received, if needed. */ + struct tcp_seg *cseg = tcp_seg_copy(&inseg); + if (cseg != NULL) { + if (TCP_SEQ_GT(prev->tcphdr->seqno + prev->len, seqno)) { + /* We need to trim the prev segment. */ + prev->len = (u16_t)(seqno - prev->tcphdr->seqno); + pbuf_realloc(prev->p, prev->len); + } + prev->next = cseg; + tcp_oos_insert_segment(cseg, next); + } + break; + } + } + +#if LWIP_TCP_SACK_OUT + /* The new segment goes after the 'next' one. If there is a "hole" in sequence numbers + between 'prev' and the beginning of 'next', we want to move sackbeg. */ + if (prev != NULL && prev->tcphdr->seqno + prev->len != next->tcphdr->seqno) { + sackbeg = next->tcphdr->seqno; + } +#endif /* LWIP_TCP_SACK_OUT */ + + /* We don't use 'prev' below, so let's set it to current 'next'. + This way even if we break the loop below, 'prev' will be pointing + at the segment right in front of the newly added one. */ + prev = next; + + /* If the "next" segment is the last segment on the + ooseq queue, we add the incoming segment to the end + of the list. */ + if (next->next == NULL && + TCP_SEQ_GT(seqno, next->tcphdr->seqno)) { + if (TCPH_FLAGS(next->tcphdr) & TCP_FIN) { + /* segment "next" already contains all data */ + break; + } + next->next = tcp_seg_copy(&inseg); + if (next->next != NULL) { + if (TCP_SEQ_GT(next->tcphdr->seqno + next->len, seqno)) { + /* We need to trim the last segment. */ + next->len = (u16_t)(seqno - next->tcphdr->seqno); + pbuf_realloc(next->p, next->len); + } + /* check if the remote side overruns our receive window */ + if (TCP_SEQ_GT((u32_t)tcplen + seqno, pcb->rcv_nxt + (u32_t)pcb->rcv_wnd)) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, + ("tcp_receive: other end overran receive window" + "seqno %"U32_F" len %"U16_F" right edge %"U32_F"\n", + seqno, tcplen, pcb->rcv_nxt + pcb->rcv_wnd)); + if (TCPH_FLAGS(next->next->tcphdr) & TCP_FIN) { + /* Must remove the FIN from the header as we're trimming + * that byte of sequence-space from the packet */ + TCPH_FLAGS_SET(next->next->tcphdr, TCPH_FLAGS(next->next->tcphdr) & ~TCP_FIN); + } + /* Adjust length of segment to fit in the window. */ + next->next->len = (u16_t)(pcb->rcv_nxt + pcb->rcv_wnd - seqno); + pbuf_realloc(next->next->p, next->next->len); + tcplen = TCP_TCPLEN(next->next); + LWIP_ASSERT("tcp_receive: segment not trimmed correctly to rcv_wnd\n", + (seqno + tcplen) == (pcb->rcv_nxt + pcb->rcv_wnd)); + } + } + break; + } + } + } + +#if LWIP_TCP_SACK_OUT + if (pcb->flags & TF_SACK) { + if (prev == NULL) { + /* The new segment is at the beginning. sackbeg should already be set properly. + We need to find the right edge. */ + next = pcb->ooseq; + } else if (prev->next != NULL) { + /* The new segment was added after 'prev'. If there is a "hole" between 'prev' and 'prev->next', + we need to move sackbeg. After that we should find the right edge. */ + next = prev->next; + if (prev->tcphdr->seqno + prev->len != next->tcphdr->seqno) { + sackbeg = next->tcphdr->seqno; + } + } else { + next = NULL; + } + if (next != NULL) { + u32_t sackend = next->tcphdr->seqno; + for ( ; (next != NULL) && (sackend == next->tcphdr->seqno); next = next->next) { + sackend += next->len; + } + tcp_add_sack(pcb, sackbeg, sackend); + } + } +#endif /* LWIP_TCP_SACK_OUT */ + } +#if defined(TCP_OOSEQ_BYTES_LIMIT) || defined(TCP_OOSEQ_PBUFS_LIMIT) + { + /* Check that the data on ooseq doesn't exceed one of the limits + and throw away everything above that limit. */ +#ifdef TCP_OOSEQ_BYTES_LIMIT + const u32_t ooseq_max_blen = TCP_OOSEQ_BYTES_LIMIT(pcb); + u32_t ooseq_blen = 0; +#endif +#ifdef TCP_OOSEQ_PBUFS_LIMIT + const u16_t ooseq_max_qlen = TCP_OOSEQ_PBUFS_LIMIT(pcb); + u16_t ooseq_qlen = 0; +#endif + struct tcp_seg *next, *prev = NULL; + for (next = pcb->ooseq; next != NULL; prev = next, next = next->next) { + struct pbuf *p = next->p; + int stop_here = 0; +#ifdef TCP_OOSEQ_BYTES_LIMIT + ooseq_blen += p->tot_len; + if (ooseq_blen > ooseq_max_blen) { + stop_here = 1; + } +#endif +#ifdef TCP_OOSEQ_PBUFS_LIMIT + ooseq_qlen += pbuf_clen(p); + if (ooseq_qlen > ooseq_max_qlen) { + stop_here = 1; + } +#endif + if (stop_here) { +#if LWIP_TCP_SACK_OUT + if (pcb->flags & TF_SACK) { + /* Let's remove all SACKs from next's seqno up. */ + tcp_remove_sacks_gt(pcb, next->tcphdr->seqno); + } +#endif /* LWIP_TCP_SACK_OUT */ + /* too much ooseq data, dump this and everything after it */ + tcp_segs_free(next); + if (prev == NULL) { + /* first ooseq segment is too much, dump the whole queue */ + pcb->ooseq = NULL; + } else { + /* just dump 'next' and everything after it */ + prev->next = NULL; + } + break; + } + } + } +#endif /* TCP_OOSEQ_BYTES_LIMIT || TCP_OOSEQ_PBUFS_LIMIT */ +#endif /* TCP_QUEUE_OOSEQ */ + + /* We send the ACK packet after we've (potentially) dealt with SACKs, + so they can be included in the acknowledgment. */ + tcp_send_empty_ack(pcb); + } + } else { + /* The incoming segment is not within the window. */ + tcp_send_empty_ack(pcb); + } + } else { + /* Segments with length 0 is taken care of here. Segments that + fall out of the window are ACKed. */ + if (!TCP_SEQ_BETWEEN(seqno, pcb->rcv_nxt, pcb->rcv_nxt + pcb->rcv_wnd - 1)) { + tcp_ack_now(pcb); + } + } +} + +static u8_t +tcp_get_next_optbyte(void) +{ + u16_t optidx = tcp_optidx++; + if ((tcphdr_opt2 == NULL) || (optidx < tcphdr_opt1len)) { + u8_t *opts = (u8_t *)tcphdr + TCP_HLEN; + return opts[optidx]; + } else { + u8_t idx = (u8_t)(optidx - tcphdr_opt1len); + return tcphdr_opt2[idx]; + } +} + +/** + * Parses the options contained in the incoming segment. + * + * Called from tcp_listen_input() and tcp_process(). + * Currently, only the MSS option is supported! + * + * @param pcb the tcp_pcb for which a segment arrived + */ +static void +tcp_parseopt(struct tcp_pcb *pcb) +{ + u8_t data; + u16_t mss; +#if LWIP_TCP_TIMESTAMPS + u32_t tsval; +#endif + + LWIP_ASSERT("tcp_parseopt: invalid pcb", pcb != NULL); + + /* Parse the TCP MSS option, if present. */ + if (tcphdr_optlen != 0) { + for (tcp_optidx = 0; tcp_optidx < tcphdr_optlen; ) { + u8_t opt = tcp_get_next_optbyte(); + switch (opt) { + case LWIP_TCP_OPT_EOL: + /* End of options. */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: EOL\n")); + return; + case LWIP_TCP_OPT_NOP: + /* NOP option. */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: NOP\n")); + break; + case LWIP_TCP_OPT_MSS: + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: MSS\n")); + if (tcp_get_next_optbyte() != LWIP_TCP_OPT_LEN_MSS || (tcp_optidx - 2 + LWIP_TCP_OPT_LEN_MSS) > tcphdr_optlen) { + /* Bad length */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: bad length\n")); + return; + } + /* An MSS option with the right option length. */ + mss = (u16_t)(tcp_get_next_optbyte() << 8); + mss |= tcp_get_next_optbyte(); + /* Limit the mss to the configured TCP_MSS and prevent division by zero */ + pcb->mss = ((mss > TCP_MSS) || (mss == 0)) ? TCP_MSS : mss; + break; +#if LWIP_WND_SCALE + case LWIP_TCP_OPT_WS: + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: WND_SCALE\n")); + if (tcp_get_next_optbyte() != LWIP_TCP_OPT_LEN_WS || (tcp_optidx - 2 + LWIP_TCP_OPT_LEN_WS) > tcphdr_optlen) { + /* Bad length */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: bad length\n")); + return; + } + /* An WND_SCALE option with the right option length. */ + data = tcp_get_next_optbyte(); + /* If syn was received with wnd scale option, + activate wnd scale opt, but only if this is not a retransmission */ + if ((flags & TCP_SYN) && !(pcb->flags & TF_WND_SCALE)) { + pcb->snd_scale = data; + if (pcb->snd_scale > 14U) { + pcb->snd_scale = 14U; + } + pcb->rcv_scale = TCP_RCV_SCALE; + tcp_set_flags(pcb, TF_WND_SCALE); + /* window scaling is enabled, we can use the full receive window */ + LWIP_ASSERT("window not at default value", pcb->rcv_wnd == TCPWND_MIN16(TCP_WND)); + LWIP_ASSERT("window not at default value", pcb->rcv_ann_wnd == TCPWND_MIN16(TCP_WND)); + pcb->rcv_wnd = pcb->rcv_ann_wnd = TCP_WND; + } + break; +#endif /* LWIP_WND_SCALE */ +#if LWIP_TCP_TIMESTAMPS + case LWIP_TCP_OPT_TS: + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: TS\n")); + if (tcp_get_next_optbyte() != LWIP_TCP_OPT_LEN_TS || (tcp_optidx - 2 + LWIP_TCP_OPT_LEN_TS) > tcphdr_optlen) { + /* Bad length */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: bad length\n")); + return; + } + /* TCP timestamp option with valid length */ + tsval = tcp_get_next_optbyte(); + tsval |= (tcp_get_next_optbyte() << 8); + tsval |= (tcp_get_next_optbyte() << 16); + tsval |= (tcp_get_next_optbyte() << 24); + if (flags & TCP_SYN) { + pcb->ts_recent = lwip_ntohl(tsval); + /* Enable sending timestamps in every segment now that we know + the remote host supports it. */ + tcp_set_flags(pcb, TF_TIMESTAMP); + } else if (TCP_SEQ_BETWEEN(pcb->ts_lastacksent, seqno, seqno + tcplen)) { + pcb->ts_recent = lwip_ntohl(tsval); + } + /* Advance to next option (6 bytes already read) */ + tcp_optidx += LWIP_TCP_OPT_LEN_TS - 6; + break; +#endif /* LWIP_TCP_TIMESTAMPS */ +#if LWIP_TCP_SACK_OUT + case LWIP_TCP_OPT_SACK_PERM: + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: SACK_PERM\n")); + if (tcp_get_next_optbyte() != LWIP_TCP_OPT_LEN_SACK_PERM || (tcp_optidx - 2 + LWIP_TCP_OPT_LEN_SACK_PERM) > tcphdr_optlen) { + /* Bad length */ + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: bad length\n")); + return; + } + /* TCP SACK_PERM option with valid length */ + if (flags & TCP_SYN) { + /* We only set it if we receive it in a SYN (or SYN+ACK) packet */ + tcp_set_flags(pcb, TF_SACK); + } + break; +#endif /* LWIP_TCP_SACK_OUT */ + default: + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: other\n")); + data = tcp_get_next_optbyte(); + if (data < 2) { + LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_parseopt: bad length\n")); + /* If the length field is zero, the options are malformed + and we don't process them further. */ + return; + } + /* All other options have a length field, so that we easily + can skip past them. */ + tcp_optidx += data - 2; + } + } + } +} + +void +tcp_trigger_input_pcb_close(void) +{ + recv_flags |= TF_CLOSED; +} + +#if LWIP_TCP_SACK_OUT +/** + * Called by tcp_receive() to add new SACK entry. + * + * The new SACK entry will be placed at the beginning of rcv_sacks[], as the newest one. + * Existing SACK entries will be "pushed back", to preserve their order. + * This is the behavior described in RFC 2018, section 4. + * + * @param pcb the tcp_pcb for which a segment arrived + * @param left the left side of the SACK (the first sequence number) + * @param right the right side of the SACK (the first sequence number past this SACK) + */ +static void +tcp_add_sack(struct tcp_pcb *pcb, u32_t left, u32_t right) +{ + u8_t i; + u8_t unused_idx; + + if ((pcb->flags & TF_SACK) == 0 || !TCP_SEQ_LT(left, right)) { + return; + } + + /* First, let's remove all SACKs that are no longer needed (because they overlap with the newest one), + while moving all other SACKs forward. + We run this loop for all entries, until we find the first invalid one. + There is no point checking after that. */ + for (i = unused_idx = 0; (i < LWIP_TCP_MAX_SACK_NUM) && LWIP_TCP_SACK_VALID(pcb, i); ++i) { + /* We only want to use SACK at [i] if it doesn't overlap with left:right range. + It does not overlap if its right side is before the newly added SACK, + or if its left side is after the newly added SACK. + NOTE: The equality should not really happen, but it doesn't hurt. */ + if (TCP_SEQ_LEQ(pcb->rcv_sacks[i].right, left) || TCP_SEQ_LEQ(right, pcb->rcv_sacks[i].left)) { + if (unused_idx != i) { + /* We don't need to copy if it's already in the right spot */ + pcb->rcv_sacks[unused_idx] = pcb->rcv_sacks[i]; + } + ++unused_idx; + } + } + + /* Now 'unused_idx' is the index of the first invalid SACK entry, + anywhere between 0 (no valid entries) and LWIP_TCP_MAX_SACK_NUM (all entries are valid). + We want to clear this and all following SACKs. + However, we will be adding another one in the front (and shifting everything else back). + So let's just iterate from the back, and set each entry to the one to the left if it's valid, + or to 0 if it is not. */ + for (i = LWIP_TCP_MAX_SACK_NUM - 1; i > 0; --i) { + /* [i] is the index we are setting, and the value should be at index [i-1], + or 0 if that index is unused (>= unused_idx). */ + if (i - 1 >= unused_idx) { + /* [i-1] is unused. Let's clear [i]. */ + pcb->rcv_sacks[i].left = pcb->rcv_sacks[i].right = 0; + } else { + pcb->rcv_sacks[i] = pcb->rcv_sacks[i - 1]; + } + } + + /* And now we can store the newest SACK */ + pcb->rcv_sacks[0].left = left; + pcb->rcv_sacks[0].right = right; +} + +/** + * Called to remove a range of SACKs. + * + * SACK entries will be removed or adjusted to not acknowledge any sequence + * numbers that are less than 'seq' passed. It not only invalidates entries, + * but also moves all entries that are still valid to the beginning. + * + * @param pcb the tcp_pcb to modify + * @param seq the lowest sequence number to keep in SACK entries + */ +static void +tcp_remove_sacks_lt(struct tcp_pcb *pcb, u32_t seq) +{ + u8_t i; + u8_t unused_idx; + + /* We run this loop for all entries, until we find the first invalid one. + There is no point checking after that. */ + for (i = unused_idx = 0; (i < LWIP_TCP_MAX_SACK_NUM) && LWIP_TCP_SACK_VALID(pcb, i); ++i) { + /* We only want to use SACK at index [i] if its right side is > 'seq'. */ + if (TCP_SEQ_GT(pcb->rcv_sacks[i].right, seq)) { + if (unused_idx != i) { + /* We only copy it if it's not in the right spot already. */ + pcb->rcv_sacks[unused_idx] = pcb->rcv_sacks[i]; + } + /* NOTE: It is possible that its left side is < 'seq', in which case we should adjust it. */ + if (TCP_SEQ_LT(pcb->rcv_sacks[unused_idx].left, seq)) { + pcb->rcv_sacks[unused_idx].left = seq; + } + ++unused_idx; + } + } + + /* We also need to invalidate everything from 'unused_idx' till the end */ + for (i = unused_idx; i < LWIP_TCP_MAX_SACK_NUM; ++i) { + pcb->rcv_sacks[i].left = pcb->rcv_sacks[i].right = 0; + } +} + +#if defined(TCP_OOSEQ_BYTES_LIMIT) || defined(TCP_OOSEQ_PBUFS_LIMIT) +/** + * Called to remove a range of SACKs. + * + * SACK entries will be removed or adjusted to not acknowledge any sequence + * numbers that are greater than (or equal to) 'seq' passed. It not only invalidates entries, + * but also moves all entries that are still valid to the beginning. + * + * @param pcb the tcp_pcb to modify + * @param seq the highest sequence number to keep in SACK entries + */ +static void +tcp_remove_sacks_gt(struct tcp_pcb *pcb, u32_t seq) +{ + u8_t i; + u8_t unused_idx; + + /* We run this loop for all entries, until we find the first invalid one. + There is no point checking after that. */ + for (i = unused_idx = 0; (i < LWIP_TCP_MAX_SACK_NUM) && LWIP_TCP_SACK_VALID(pcb, i); ++i) { + /* We only want to use SACK at index [i] if its left side is < 'seq'. */ + if (TCP_SEQ_LT(pcb->rcv_sacks[i].left, seq)) { + if (unused_idx != i) { + /* We only copy it if it's not in the right spot already. */ + pcb->rcv_sacks[unused_idx] = pcb->rcv_sacks[i]; + } + /* NOTE: It is possible that its right side is > 'seq', in which case we should adjust it. */ + if (TCP_SEQ_GT(pcb->rcv_sacks[unused_idx].right, seq)) { + pcb->rcv_sacks[unused_idx].right = seq; + } + ++unused_idx; + } + } + + /* We also need to invalidate everything from 'unused_idx' till the end */ + for (i = unused_idx; i < LWIP_TCP_MAX_SACK_NUM; ++i) { + pcb->rcv_sacks[i].left = pcb->rcv_sacks[i].right = 0; + } +} +#endif /* TCP_OOSEQ_BYTES_LIMIT || TCP_OOSEQ_PBUFS_LIMIT */ + +#endif /* LWIP_TCP_SACK_OUT */ + +#endif /* LWIP_TCP */ diff --git a/Other/tun2socks/core/c/core/tcp_out.c b/Other/tun2socks/core/c/core/tcp_out.c new file mode 100644 index 0000000..724df10 --- /dev/null +++ b/Other/tun2socks/core/c/core/tcp_out.c @@ -0,0 +1,2190 @@ +/** + * @file + * Transmission Control Protocol, outgoing traffic + * + * The output functions of TCP. + * + * There are two distinct ways for TCP segments to get sent: + * - queued data: these are segments transferring data or segments containing + * SYN or FIN (which both count as one sequence number). They are created as + * struct @ref pbuf together with a struct tcp_seg and enqueue to the + * unsent list of the pcb. They are sent by tcp_output: + * - @ref tcp_write : creates data segments + * - @ref tcp_split_unsent_seg : splits a data segment + * - @ref tcp_enqueue_flags : creates SYN-only or FIN-only segments + * - @ref tcp_output / tcp_output_segment : finalize the tcp header + * (e.g. sequence numbers, options, checksum) and output to IP + * - the various tcp_rexmit functions shuffle around segments between the + * unsent an unacked lists to retransmit them + * - tcp_create_segment and tcp_pbuf_prealloc allocate pbuf and + * segment for these functions + * - direct send: these segments don't contain data but control the connection + * behaviour. They are created as pbuf only and sent directly without + * enqueueing them: + * - @ref tcp_send_empty_ack sends an ACK-only segment + * - @ref tcp_rst sends a RST segment + * - @ref tcp_keepalive sends a keepalive segment + * - @ref tcp_zero_window_probe sends a window probe segment + * - tcp_output_alloc_header allocates a header-only pbuf for these functions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#include "lwip/opt.h" + +#if LWIP_TCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/priv/tcp_priv.h" +#include "lwip/def.h" +#include "lwip/mem.h" +#include "lwip/memp.h" +#include "lwip/ip_addr.h" +#include "lwip/netif.h" +#include "lwip/inet_chksum.h" +#include "lwip/stats.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#if LWIP_TCP_TIMESTAMPS +#include "lwip/sys.h" +#endif + +#include + +#ifdef LWIP_HOOK_FILENAME +#include LWIP_HOOK_FILENAME +#endif + +/* Allow to add custom TCP header options by defining this hook */ +#ifdef LWIP_HOOK_TCP_OUT_TCPOPT_LENGTH +#define LWIP_TCP_OPT_LENGTH_SEGMENT(flags, pcb) LWIP_HOOK_TCP_OUT_TCPOPT_LENGTH(pcb, LWIP_TCP_OPT_LENGTH(flags)) +#else +#define LWIP_TCP_OPT_LENGTH_SEGMENT(flags, pcb) LWIP_TCP_OPT_LENGTH(flags) +#endif + +/* Define some copy-macros for checksum-on-copy so that the code looks + nicer by preventing too many ifdef's. */ +#if TCP_CHECKSUM_ON_COPY +#define TCP_DATA_COPY(dst, src, len, seg) do { \ + tcp_seg_add_chksum(LWIP_CHKSUM_COPY(dst, src, len), \ + len, &seg->chksum, &seg->chksum_swapped); \ + seg->flags |= TF_SEG_DATA_CHECKSUMMED; } while(0) +#define TCP_DATA_COPY2(dst, src, len, chksum, chksum_swapped) \ + tcp_seg_add_chksum(LWIP_CHKSUM_COPY(dst, src, len), len, chksum, chksum_swapped); +#else /* TCP_CHECKSUM_ON_COPY*/ +#define TCP_DATA_COPY(dst, src, len, seg) MEMCPY(dst, src, len) +#define TCP_DATA_COPY2(dst, src, len, chksum, chksum_swapped) MEMCPY(dst, src, len) +#endif /* TCP_CHECKSUM_ON_COPY*/ + +/** Define this to 1 for an extra check that the output checksum is valid + * (usefule when the checksum is generated by the application, not the stack) */ +#ifndef TCP_CHECKSUM_ON_COPY_SANITY_CHECK +#define TCP_CHECKSUM_ON_COPY_SANITY_CHECK 0 +#endif +/* Allow to override the failure of sanity check from warning to e.g. hard failure */ +#if TCP_CHECKSUM_ON_COPY_SANITY_CHECK +#ifndef TCP_CHECKSUM_ON_COPY_SANITY_CHECK_FAIL +#define TCP_CHECKSUM_ON_COPY_SANITY_CHECK_FAIL(msg) LWIP_DEBUGF(TCP_DEBUG | LWIP_DBG_LEVEL_WARNING, msg) +#endif +#endif + +#if TCP_OVERSIZE +/** The size of segment pbufs created when TCP_OVERSIZE is enabled */ +#ifndef TCP_OVERSIZE_CALC_LENGTH +#define TCP_OVERSIZE_CALC_LENGTH(length) ((length) + TCP_OVERSIZE) +#endif +#endif + +/* Forward declarations.*/ +static err_t tcp_output_segment(struct tcp_seg *seg, struct tcp_pcb *pcb, struct netif *netif); + +/* tcp_route: common code that returns a fixed bound netif or calls ip_route */ +static struct netif * +tcp_route(const struct tcp_pcb *pcb, const ip_addr_t *src, const ip_addr_t *dst) +{ + LWIP_UNUSED_ARG(src); /* in case IPv4-only and source-based routing is disabled */ + + if ((pcb != NULL) && (pcb->netif_idx != NETIF_NO_INDEX)) { + return netif_get_by_index(pcb->netif_idx); + } else { + return ip_route(src, dst); + } +} + +/** + * Create a TCP segment with prefilled header. + * + * Called by @ref tcp_write, @ref tcp_enqueue_flags and @ref tcp_split_unsent_seg + * + * @param pcb Protocol control block for the TCP connection. + * @param p pbuf that is used to hold the TCP header. + * @param hdrflags TCP flags for header. + * @param seqno TCP sequence number of this packet + * @param optflags options to include in TCP header + * @return a new tcp_seg pointing to p, or NULL. + * The TCP header is filled in except ackno and wnd. + * p is freed on failure. + */ +static struct tcp_seg * +tcp_create_segment(const struct tcp_pcb *pcb, struct pbuf *p, u8_t hdrflags, u32_t seqno, u8_t optflags) +{ + struct tcp_seg *seg; + u8_t optlen; + + LWIP_ASSERT("tcp_create_segment: invalid pcb", pcb != NULL); + LWIP_ASSERT("tcp_create_segment: invalid pbuf", p != NULL); + + optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(optflags, pcb); + + if ((seg = (struct tcp_seg *)memp_malloc(MEMP_TCP_SEG)) == NULL) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("tcp_create_segment: no memory.\n")); + pbuf_free(p); + return NULL; + } + seg->flags = optflags; + seg->next = NULL; + seg->p = p; + LWIP_ASSERT("p->tot_len >= optlen", p->tot_len >= optlen); + seg->len = p->tot_len - optlen; +#if TCP_OVERSIZE_DBGCHECK + seg->oversize_left = 0; +#endif /* TCP_OVERSIZE_DBGCHECK */ +#if TCP_CHECKSUM_ON_COPY + seg->chksum = 0; + seg->chksum_swapped = 0; + /* check optflags */ + LWIP_ASSERT("invalid optflags passed: TF_SEG_DATA_CHECKSUMMED", + (optflags & TF_SEG_DATA_CHECKSUMMED) == 0); +#endif /* TCP_CHECKSUM_ON_COPY */ + + /* build TCP header */ + if (pbuf_add_header(p, TCP_HLEN)) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("tcp_create_segment: no room for TCP header in pbuf.\n")); + TCP_STATS_INC(tcp.err); + tcp_seg_free(seg); + return NULL; + } + seg->tcphdr = (struct tcp_hdr *)seg->p->payload; + seg->tcphdr->src = lwip_htons(pcb->local_port); + seg->tcphdr->dest = lwip_htons(pcb->remote_port); + seg->tcphdr->seqno = lwip_htonl(seqno); + /* ackno is set in tcp_output */ + TCPH_HDRLEN_FLAGS_SET(seg->tcphdr, (5 + optlen / 4), hdrflags); + /* wnd and chksum are set in tcp_output */ + seg->tcphdr->urgp = 0; + return seg; +} + +/** + * Allocate a PBUF_RAM pbuf, perhaps with extra space at the end. + * + * This function is like pbuf_alloc(layer, length, PBUF_RAM) except + * there may be extra bytes available at the end. + * + * Called by @ref tcp_write + * + * @param layer flag to define header size. + * @param length size of the pbuf's payload. + * @param max_length maximum usable size of payload+oversize. + * @param oversize pointer to a u16_t that will receive the number of usable tail bytes. + * @param pcb The TCP connection that will enqueue the pbuf. + * @param apiflags API flags given to tcp_write. + * @param first_seg true when this pbuf will be used in the first enqueued segment. + */ +#if TCP_OVERSIZE +static struct pbuf * +tcp_pbuf_prealloc(pbuf_layer layer, u16_t length, u16_t max_length, + u16_t *oversize, const struct tcp_pcb *pcb, u8_t apiflags, + u8_t first_seg) +{ + struct pbuf *p; + u16_t alloc = length; + + LWIP_ASSERT("tcp_pbuf_prealloc: invalid oversize", oversize != NULL); + LWIP_ASSERT("tcp_pbuf_prealloc: invalid pcb", pcb != NULL); + +#if LWIP_NETIF_TX_SINGLE_PBUF + LWIP_UNUSED_ARG(max_length); + LWIP_UNUSED_ARG(pcb); + LWIP_UNUSED_ARG(apiflags); + LWIP_UNUSED_ARG(first_seg); + alloc = max_length; +#else /* LWIP_NETIF_TX_SINGLE_PBUF */ + if (length < max_length) { + /* Should we allocate an oversized pbuf, or just the minimum + * length required? If tcp_write is going to be called again + * before this segment is transmitted, we want the oversized + * buffer. If the segment will be transmitted immediately, we can + * save memory by allocating only length. We use a simple + * heuristic based on the following information: + * + * Did the user set TCP_WRITE_FLAG_MORE? + * + * Will the Nagle algorithm defer transmission of this segment? + */ + if ((apiflags & TCP_WRITE_FLAG_MORE) || + (!(pcb->flags & TF_NODELAY) && + (!first_seg || + pcb->unsent != NULL || + pcb->unacked != NULL))) { + alloc = LWIP_MIN(max_length, LWIP_MEM_ALIGN_SIZE(TCP_OVERSIZE_CALC_LENGTH(length))); + } + } +#endif /* LWIP_NETIF_TX_SINGLE_PBUF */ + p = pbuf_alloc(layer, alloc, PBUF_RAM); + if (p == NULL) { + return NULL; + } + LWIP_ASSERT("need unchained pbuf", p->next == NULL); + *oversize = p->len - length; + /* trim p->len to the currently used size */ + p->len = p->tot_len = length; + return p; +} +#else /* TCP_OVERSIZE */ +#define tcp_pbuf_prealloc(layer, length, mx, os, pcb, api, fst) pbuf_alloc((layer), (length), PBUF_RAM) +#endif /* TCP_OVERSIZE */ + +#if TCP_CHECKSUM_ON_COPY +/** Add a checksum of newly added data to the segment. + * + * Called by tcp_write and tcp_split_unsent_seg. + */ +static void +tcp_seg_add_chksum(u16_t chksum, u16_t len, u16_t *seg_chksum, + u8_t *seg_chksum_swapped) +{ + u32_t helper; + /* add chksum to old chksum and fold to u16_t */ + helper = chksum + *seg_chksum; + chksum = FOLD_U32T(helper); + if ((len & 1) != 0) { + *seg_chksum_swapped = 1 - *seg_chksum_swapped; + chksum = SWAP_BYTES_IN_WORD(chksum); + } + *seg_chksum = chksum; +} +#endif /* TCP_CHECKSUM_ON_COPY */ + +/** Checks if tcp_write is allowed or not (checks state, snd_buf and snd_queuelen). + * + * @param pcb the tcp pcb to check for + * @param len length of data to send (checked agains snd_buf) + * @return ERR_OK if tcp_write is allowed to proceed, another err_t otherwise + */ +static err_t +tcp_write_checks(struct tcp_pcb *pcb, u16_t len) +{ + LWIP_ASSERT("tcp_write_checks: invalid pcb", pcb != NULL); + + /* connection is in invalid state for data transmission? */ + if ((pcb->state != ESTABLISHED) && + (pcb->state != CLOSE_WAIT) && + (pcb->state != SYN_SENT) && + (pcb->state != SYN_RCVD)) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_STATE | LWIP_DBG_LEVEL_SEVERE, ("tcp_write() called in invalid state\n")); + return ERR_CONN; + } else if (len == 0) { + return ERR_OK; + } + + /* fail on too much data */ + if (len > pcb->snd_buf) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SEVERE, ("tcp_write: too much data (len=%"U16_F" > snd_buf=%"TCPWNDSIZE_F")\n", + len, pcb->snd_buf)); + tcp_set_flags(pcb, TF_NAGLEMEMERR); + return ERR_MEM; + } + + LWIP_DEBUGF(TCP_QLEN_DEBUG, ("tcp_write: queuelen: %"TCPWNDSIZE_F"\n", (tcpwnd_size_t)pcb->snd_queuelen)); + + /* If total number of pbufs on the unsent/unacked queues exceeds the + * configured maximum, return an error */ + /* check for configured max queuelen and possible overflow */ + if (pcb->snd_queuelen >= LWIP_MIN(TCP_SND_QUEUELEN, (TCP_SNDQUEUELEN_OVERFLOW + 1))) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SEVERE, ("tcp_write: too long queue %"U16_F" (max %"U16_F")\n", + pcb->snd_queuelen, (u16_t)TCP_SND_QUEUELEN)); + TCP_STATS_INC(tcp.memerr); + tcp_set_flags(pcb, TF_NAGLEMEMERR); + return ERR_MEM; + } + if (pcb->snd_queuelen != 0) { + LWIP_ASSERT("tcp_write: pbufs on queue => at least one queue non-empty", + pcb->unacked != NULL || pcb->unsent != NULL); + } else { + LWIP_ASSERT("tcp_write: no pbufs on queue => both queues empty", + pcb->unacked == NULL && pcb->unsent == NULL); + } + return ERR_OK; +} + +/** + * @ingroup tcp_raw + * Write data for sending (but does not send it immediately). + * + * It waits in the expectation of more data being sent soon (as + * it can send them more efficiently by combining them together). + * To prompt the system to send data now, call tcp_output() after + * calling tcp_write(). + * + * This function enqueues the data pointed to by the argument dataptr. The length of + * the data is passed as the len parameter. The apiflags can be one or more of: + * - TCP_WRITE_FLAG_COPY: indicates whether the new memory should be allocated + * for the data to be copied into. If this flag is not given, no new memory + * should be allocated and the data should only be referenced by pointer. This + * also means that the memory behind dataptr must not change until the data is + * ACKed by the remote host + * - TCP_WRITE_FLAG_MORE: indicates that more data follows. If this is omitted, + * the PSH flag is set in the last segment created by this call to tcp_write. + * If this flag is given, the PSH flag is not set. + * + * The tcp_write() function will fail and return ERR_MEM if the length + * of the data exceeds the current send buffer size or if the length of + * the queue of outgoing segment is larger than the upper limit defined + * in lwipopts.h. The number of bytes available in the output queue can + * be retrieved with the tcp_sndbuf() function. + * + * The proper way to use this function is to call the function with at + * most tcp_sndbuf() bytes of data. If the function returns ERR_MEM, + * the application should wait until some of the currently enqueued + * data has been successfully received by the other host and try again. + * + * @param pcb Protocol control block for the TCP connection to enqueue data for. + * @param arg Pointer to the data to be enqueued for sending. + * @param len Data length in bytes + * @param apiflags combination of following flags : + * - TCP_WRITE_FLAG_COPY (0x01) data will be copied into memory belonging to the stack + * - TCP_WRITE_FLAG_MORE (0x02) for TCP connection, PSH flag will not be set on last segment sent, + * @return ERR_OK if enqueued, another err_t on error + */ +err_t +tcp_write(struct tcp_pcb *pcb, const void *arg, u16_t len, u8_t apiflags) +{ + struct pbuf *concat_p = NULL; + struct tcp_seg *last_unsent = NULL, *seg = NULL, *prev_seg = NULL, *queue = NULL; + u16_t pos = 0; /* position in 'arg' data */ + u16_t queuelen; + u8_t optlen; + u8_t optflags = 0; +#if TCP_OVERSIZE + u16_t oversize = 0; + u16_t oversize_used = 0; +#if TCP_OVERSIZE_DBGCHECK + u16_t oversize_add = 0; +#endif /* TCP_OVERSIZE_DBGCHECK*/ +#endif /* TCP_OVERSIZE */ + u16_t extendlen = 0; +#if TCP_CHECKSUM_ON_COPY + u16_t concat_chksum = 0; + u8_t concat_chksum_swapped = 0; + u16_t concat_chksummed = 0; +#endif /* TCP_CHECKSUM_ON_COPY */ + err_t err; + u16_t mss_local; + + LWIP_ERROR("tcp_write: invalid pcb", pcb != NULL, return ERR_ARG); + + /* don't allocate segments bigger than half the maximum window we ever received */ + mss_local = LWIP_MIN(pcb->mss, TCPWND_MIN16(pcb->snd_wnd_max / 2)); + mss_local = mss_local ? mss_local : pcb->mss; + + LWIP_ASSERT_CORE_LOCKED(); + +#if LWIP_NETIF_TX_SINGLE_PBUF + /* Always copy to try to create single pbufs for TX */ + apiflags |= TCP_WRITE_FLAG_COPY; +#endif /* LWIP_NETIF_TX_SINGLE_PBUF */ + + LWIP_DEBUGF(TCP_OUTPUT_DEBUG, ("tcp_write(pcb=%p, data=%p, len=%"U16_F", apiflags=%"U16_F")\n", + (void *)pcb, arg, len, (u16_t)apiflags)); + LWIP_ERROR("tcp_write: arg == NULL (programmer violates API)", + arg != NULL, return ERR_ARG;); + + err = tcp_write_checks(pcb, len); + if (err != ERR_OK) { + return err; + } + queuelen = pcb->snd_queuelen; + +#if LWIP_TCP_TIMESTAMPS + if ((pcb->flags & TF_TIMESTAMP)) { + /* Make sure the timestamp option is only included in data segments if we + agreed about it with the remote host. */ + optflags = TF_SEG_OPTS_TS; + optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(TF_SEG_OPTS_TS, pcb); + /* ensure that segments can hold at least one data byte... */ + mss_local = LWIP_MAX(mss_local, LWIP_TCP_OPT_LEN_TS + 1); + } else +#endif /* LWIP_TCP_TIMESTAMPS */ + { + optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(0, pcb); + } + + + /* + * TCP segmentation is done in three phases with increasing complexity: + * + * 1. Copy data directly into an oversized pbuf. + * 2. Chain a new pbuf to the end of pcb->unsent. + * 3. Create new segments. + * + * We may run out of memory at any point. In that case we must + * return ERR_MEM and not change anything in pcb. Therefore, all + * changes are recorded in local variables and committed at the end + * of the function. Some pcb fields are maintained in local copies: + * + * queuelen = pcb->snd_queuelen + * oversize = pcb->unsent_oversize + * + * These variables are set consistently by the phases: + * + * seg points to the last segment tampered with. + * + * pos records progress as data is segmented. + */ + + /* Find the tail of the unsent queue. */ + if (pcb->unsent != NULL) { + u16_t space; + u16_t unsent_optlen; + + /* @todo: this could be sped up by keeping last_unsent in the pcb */ + for (last_unsent = pcb->unsent; last_unsent->next != NULL; + last_unsent = last_unsent->next); + + /* Usable space at the end of the last unsent segment */ + unsent_optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(last_unsent->flags, pcb); + LWIP_ASSERT("mss_local is too small", mss_local >= last_unsent->len + unsent_optlen); + space = mss_local - (last_unsent->len + unsent_optlen); + + /* + * Phase 1: Copy data directly into an oversized pbuf. + * + * The number of bytes copied is recorded in the oversize_used + * variable. The actual copying is done at the bottom of the + * function. + */ +#if TCP_OVERSIZE +#if TCP_OVERSIZE_DBGCHECK + /* check that pcb->unsent_oversize matches last_unsent->oversize_left */ + LWIP_ASSERT("unsent_oversize mismatch (pcb vs. last_unsent)", + pcb->unsent_oversize == last_unsent->oversize_left); +#endif /* TCP_OVERSIZE_DBGCHECK */ + oversize = pcb->unsent_oversize; + if (oversize > 0) { + LWIP_ASSERT("inconsistent oversize vs. space", oversize <= space); + seg = last_unsent; + oversize_used = LWIP_MIN(space, LWIP_MIN(oversize, len)); + pos += oversize_used; + oversize -= oversize_used; + space -= oversize_used; + } + /* now we are either finished or oversize is zero */ + LWIP_ASSERT("inconsistent oversize vs. len", (oversize == 0) || (pos == len)); +#endif /* TCP_OVERSIZE */ + +#if !LWIP_NETIF_TX_SINGLE_PBUF + /* + * Phase 2: Chain a new pbuf to the end of pcb->unsent. + * + * As an exception when NOT copying the data, if the given data buffer + * directly follows the last unsent data buffer in memory, extend the last + * ROM pbuf reference to the buffer, thus saving a ROM pbuf allocation. + * + * We don't extend segments containing SYN/FIN flags or options + * (len==0). The new pbuf is kept in concat_p and pbuf_cat'ed at + * the end. + * + * This phase is skipped for LWIP_NETIF_TX_SINGLE_PBUF as we could only execute + * it after rexmit puts a segment from unacked to unsent and at this point, + * oversize info is lost. + */ + if ((pos < len) && (space > 0) && (last_unsent->len > 0)) { + u16_t seglen = LWIP_MIN(space, len - pos); + seg = last_unsent; + + /* Create a pbuf with a copy or reference to seglen bytes. We + * can use PBUF_RAW here since the data appears in the middle of + * a segment. A header will never be prepended. */ + if (apiflags & TCP_WRITE_FLAG_COPY) { + /* Data is copied */ + if ((concat_p = tcp_pbuf_prealloc(PBUF_RAW, seglen, space, &oversize, pcb, apiflags, 1)) == NULL) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("tcp_write : could not allocate memory for pbuf copy size %"U16_F"\n", + seglen)); + goto memerr; + } +#if TCP_OVERSIZE_DBGCHECK + oversize_add = oversize; +#endif /* TCP_OVERSIZE_DBGCHECK */ + TCP_DATA_COPY2(concat_p->payload, (const u8_t *)arg + pos, seglen, &concat_chksum, &concat_chksum_swapped); +#if TCP_CHECKSUM_ON_COPY + concat_chksummed += seglen; +#endif /* TCP_CHECKSUM_ON_COPY */ + queuelen += pbuf_clen(concat_p); + } else { + /* Data is not copied */ + /* If the last unsent pbuf is of type PBUF_ROM, try to extend it. */ + struct pbuf *p; + for (p = last_unsent->p; p->next != NULL; p = p->next); + if (((p->type_internal & (PBUF_TYPE_FLAG_STRUCT_DATA_CONTIGUOUS | PBUF_TYPE_FLAG_DATA_VOLATILE)) == 0) && + (const u8_t *)p->payload + p->len == (const u8_t *)arg) { + LWIP_ASSERT("tcp_write: ROM pbufs cannot be oversized", pos == 0); + extendlen = seglen; + } else { + if ((concat_p = pbuf_alloc(PBUF_RAW, seglen, PBUF_ROM)) == NULL) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("tcp_write: could not allocate memory for zero-copy pbuf\n")); + goto memerr; + } + /* reference the non-volatile payload data */ + ((struct pbuf_rom *)concat_p)->payload = (const u8_t *)arg + pos; + queuelen += pbuf_clen(concat_p); + } +#if TCP_CHECKSUM_ON_COPY + /* calculate the checksum of nocopy-data */ + tcp_seg_add_chksum(~inet_chksum((const u8_t *)arg + pos, seglen), seglen, + &concat_chksum, &concat_chksum_swapped); + concat_chksummed += seglen; +#endif /* TCP_CHECKSUM_ON_COPY */ + } + + pos += seglen; + } +#endif /* !LWIP_NETIF_TX_SINGLE_PBUF */ + } else { +#if TCP_OVERSIZE + LWIP_ASSERT("unsent_oversize mismatch (pcb->unsent is NULL)", + pcb->unsent_oversize == 0); +#endif /* TCP_OVERSIZE */ + } + + /* + * Phase 3: Create new segments. + * + * The new segments are chained together in the local 'queue' + * variable, ready to be appended to pcb->unsent. + */ + while (pos < len) { + struct pbuf *p; + u16_t left = len - pos; + u16_t max_len = mss_local - optlen; + u16_t seglen = LWIP_MIN(left, max_len); +#if TCP_CHECKSUM_ON_COPY + u16_t chksum = 0; + u8_t chksum_swapped = 0; +#endif /* TCP_CHECKSUM_ON_COPY */ + + if (apiflags & TCP_WRITE_FLAG_COPY) { + /* If copy is set, memory should be allocated and data copied + * into pbuf */ + if ((p = tcp_pbuf_prealloc(PBUF_TRANSPORT, seglen + optlen, mss_local, &oversize, pcb, apiflags, queue == NULL)) == NULL) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("tcp_write : could not allocate memory for pbuf copy size %"U16_F"\n", seglen)); + goto memerr; + } + LWIP_ASSERT("tcp_write: check that first pbuf can hold the complete seglen", + (p->len >= seglen)); + TCP_DATA_COPY2((char *)p->payload + optlen, (const u8_t *)arg + pos, seglen, &chksum, &chksum_swapped); + } else { + /* Copy is not set: First allocate a pbuf for holding the data. + * Since the referenced data is available at least until it is + * sent out on the link (as it has to be ACKed by the remote + * party) we can safely use PBUF_ROM instead of PBUF_REF here. + */ + struct pbuf *p2; +#if TCP_OVERSIZE + LWIP_ASSERT("oversize == 0", oversize == 0); +#endif /* TCP_OVERSIZE */ + if ((p2 = pbuf_alloc(PBUF_TRANSPORT, seglen, PBUF_ROM)) == NULL) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("tcp_write: could not allocate memory for zero-copy pbuf\n")); + goto memerr; + } +#if TCP_CHECKSUM_ON_COPY + /* calculate the checksum of nocopy-data */ + chksum = ~inet_chksum((const u8_t *)arg + pos, seglen); + if (seglen & 1) { + chksum_swapped = 1; + chksum = SWAP_BYTES_IN_WORD(chksum); + } +#endif /* TCP_CHECKSUM_ON_COPY */ + /* reference the non-volatile payload data */ + ((struct pbuf_rom *)p2)->payload = (const u8_t *)arg + pos; + + /* Second, allocate a pbuf for the headers. */ + if ((p = pbuf_alloc(PBUF_TRANSPORT, optlen, PBUF_RAM)) == NULL) { + /* If allocation fails, we have to deallocate the data pbuf as + * well. */ + pbuf_free(p2); + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("tcp_write: could not allocate memory for header pbuf\n")); + goto memerr; + } + /* Concatenate the headers and data pbufs together. */ + pbuf_cat(p/*header*/, p2/*data*/); + } + + queuelen += pbuf_clen(p); + + /* Now that there are more segments queued, we check again if the + * length of the queue exceeds the configured maximum or + * overflows. */ + if (queuelen > LWIP_MIN(TCP_SND_QUEUELEN, TCP_SNDQUEUELEN_OVERFLOW)) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("tcp_write: queue too long %"U16_F" (%d)\n", + queuelen, (int)TCP_SND_QUEUELEN)); + pbuf_free(p); + goto memerr; + } + + if ((seg = tcp_create_segment(pcb, p, 0, pcb->snd_lbb + pos, optflags)) == NULL) { + goto memerr; + } +#if TCP_OVERSIZE_DBGCHECK + seg->oversize_left = oversize; +#endif /* TCP_OVERSIZE_DBGCHECK */ +#if TCP_CHECKSUM_ON_COPY + seg->chksum = chksum; + seg->chksum_swapped = chksum_swapped; + seg->flags |= TF_SEG_DATA_CHECKSUMMED; +#endif /* TCP_CHECKSUM_ON_COPY */ + + /* first segment of to-be-queued data? */ + if (queue == NULL) { + queue = seg; + } else { + /* Attach the segment to the end of the queued segments */ + LWIP_ASSERT("prev_seg != NULL", prev_seg != NULL); + prev_seg->next = seg; + } + /* remember last segment of to-be-queued data for next iteration */ + prev_seg = seg; + + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_TRACE, ("tcp_write: queueing %"U32_F":%"U32_F"\n", + lwip_ntohl(seg->tcphdr->seqno), + lwip_ntohl(seg->tcphdr->seqno) + TCP_TCPLEN(seg))); + + pos += seglen; + } + + /* + * All three segmentation phases were successful. We can commit the + * transaction. + */ +#if TCP_OVERSIZE_DBGCHECK + if ((last_unsent != NULL) && (oversize_add != 0)) { + last_unsent->oversize_left += oversize_add; + } +#endif /* TCP_OVERSIZE_DBGCHECK */ + + /* + * Phase 1: If data has been added to the preallocated tail of + * last_unsent, we update the length fields of the pbuf chain. + */ +#if TCP_OVERSIZE + if (oversize_used > 0) { + struct pbuf *p; + /* Bump tot_len of whole chain, len of tail */ + for (p = last_unsent->p; p; p = p->next) { + p->tot_len += oversize_used; + if (p->next == NULL) { + TCP_DATA_COPY((char *)p->payload + p->len, arg, oversize_used, last_unsent); + p->len += oversize_used; + } + } + last_unsent->len += oversize_used; +#if TCP_OVERSIZE_DBGCHECK + LWIP_ASSERT("last_unsent->oversize_left >= oversize_used", + last_unsent->oversize_left >= oversize_used); + last_unsent->oversize_left -= oversize_used; +#endif /* TCP_OVERSIZE_DBGCHECK */ + } + pcb->unsent_oversize = oversize; +#endif /* TCP_OVERSIZE */ + + /* + * Phase 2: concat_p can be concatenated onto last_unsent->p, unless we + * determined that the last ROM pbuf can be extended to include the new data. + */ + if (concat_p != NULL) { + LWIP_ASSERT("tcp_write: cannot concatenate when pcb->unsent is empty", + (last_unsent != NULL)); + pbuf_cat(last_unsent->p, concat_p); + last_unsent->len += concat_p->tot_len; + } else if (extendlen > 0) { + struct pbuf *p; + LWIP_ASSERT("tcp_write: extension of reference requires reference", + last_unsent != NULL && last_unsent->p != NULL); + for (p = last_unsent->p; p->next != NULL; p = p->next) { + p->tot_len += extendlen; + } + p->tot_len += extendlen; + p->len += extendlen; + last_unsent->len += extendlen; + } + +#if TCP_CHECKSUM_ON_COPY + if (concat_chksummed) { + LWIP_ASSERT("tcp_write: concat checksum needs concatenated data", + concat_p != NULL || extendlen > 0); + /*if concat checksumm swapped - swap it back */ + if (concat_chksum_swapped) { + concat_chksum = SWAP_BYTES_IN_WORD(concat_chksum); + } + tcp_seg_add_chksum(concat_chksum, concat_chksummed, &last_unsent->chksum, + &last_unsent->chksum_swapped); + last_unsent->flags |= TF_SEG_DATA_CHECKSUMMED; + } +#endif /* TCP_CHECKSUM_ON_COPY */ + + /* + * Phase 3: Append queue to pcb->unsent. Queue may be NULL, but that + * is harmless + */ + if (last_unsent == NULL) { + pcb->unsent = queue; + } else { + last_unsent->next = queue; + } + + /* + * Finally update the pcb state. + */ + pcb->snd_lbb += len; + pcb->snd_buf -= len; + pcb->snd_queuelen = queuelen; + + LWIP_DEBUGF(TCP_QLEN_DEBUG, ("tcp_write: %"S16_F" (after enqueued)\n", + pcb->snd_queuelen)); + if (pcb->snd_queuelen != 0) { + LWIP_ASSERT("tcp_write: valid queue length", + pcb->unacked != NULL || pcb->unsent != NULL); + } + + /* Set the PSH flag in the last segment that we enqueued. */ + if (seg != NULL && seg->tcphdr != NULL && ((apiflags & TCP_WRITE_FLAG_MORE) == 0)) { + TCPH_SET_FLAG(seg->tcphdr, TCP_PSH); + } + + return ERR_OK; +memerr: + tcp_set_flags(pcb, TF_NAGLEMEMERR); + TCP_STATS_INC(tcp.memerr); + + if (concat_p != NULL) { + pbuf_free(concat_p); + } + if (queue != NULL) { + tcp_segs_free(queue); + } + if (pcb->snd_queuelen != 0) { + LWIP_ASSERT("tcp_write: valid queue length", pcb->unacked != NULL || + pcb->unsent != NULL); + } + LWIP_DEBUGF(TCP_QLEN_DEBUG | LWIP_DBG_STATE, ("tcp_write: %"S16_F" (with mem err)\n", pcb->snd_queuelen)); + return ERR_MEM; +} + +/** + * Split segment on the head of the unsent queue. If return is not + * ERR_OK, existing head remains intact + * + * The split is accomplished by creating a new TCP segment and pbuf + * which holds the remainder payload after the split. The original + * pbuf is trimmed to new length. This allows splitting of read-only + * pbufs + * + * @param pcb the tcp_pcb for which to split the unsent head + * @param split the amount of payload to remain in the head + */ +err_t +tcp_split_unsent_seg(struct tcp_pcb *pcb, u16_t split) +{ + struct tcp_seg *seg = NULL, *useg = NULL; + struct pbuf *p = NULL; + u8_t optlen; + u8_t optflags; + u8_t split_flags; + u8_t remainder_flags; + u16_t remainder; + u16_t offset; +#if TCP_CHECKSUM_ON_COPY + u16_t chksum = 0; + u8_t chksum_swapped = 0; + struct pbuf *q; +#endif /* TCP_CHECKSUM_ON_COPY */ + + LWIP_ASSERT("tcp_split_unsent_seg: invalid pcb", pcb != NULL); + + useg = pcb->unsent; + if (useg == NULL) { + return ERR_MEM; + } + + if (split == 0) { + LWIP_ASSERT("Can't split segment into length 0", 0); + return ERR_VAL; + } + + if (useg->len <= split) { + return ERR_OK; + } + + LWIP_ASSERT("split <= mss", split <= pcb->mss); + LWIP_ASSERT("useg->len > 0", useg->len > 0); + + /* We should check that we don't exceed TCP_SND_QUEUELEN but we need + * to split this packet so we may actually exceed the max value by + * one! + */ + LWIP_DEBUGF(TCP_QLEN_DEBUG, ("tcp_enqueue: split_unsent_seg: %u\n", (unsigned int)pcb->snd_queuelen)); + + optflags = useg->flags; +#if TCP_CHECKSUM_ON_COPY + /* Remove since checksum is not stored until after tcp_create_segment() */ + optflags &= ~TF_SEG_DATA_CHECKSUMMED; +#endif /* TCP_CHECKSUM_ON_COPY */ + optlen = LWIP_TCP_OPT_LENGTH(optflags); + remainder = useg->len - split; + + /* Create new pbuf for the remainder of the split */ + p = pbuf_alloc(PBUF_TRANSPORT, remainder + optlen, PBUF_RAM); + if (p == NULL) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("tcp_split_unsent_seg: could not allocate memory for pbuf remainder %u\n", remainder)); + goto memerr; + } + + /* Offset into the original pbuf is past TCP/IP headers, options, and split amount */ + offset = useg->p->tot_len - useg->len + split; + /* Copy remainder into new pbuf, headers and options will not be filled out */ + if (pbuf_copy_partial(useg->p, (u8_t *)p->payload + optlen, remainder, offset ) != remainder) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("tcp_split_unsent_seg: could not copy pbuf remainder %u\n", remainder)); + goto memerr; + } +#if TCP_CHECKSUM_ON_COPY + /* calculate the checksum on remainder data */ + tcp_seg_add_chksum(~inet_chksum((const u8_t *)p->payload + optlen, remainder), remainder, + &chksum, &chksum_swapped); +#endif /* TCP_CHECKSUM_ON_COPY */ + + /* Options are created when calling tcp_output() */ + + /* Migrate flags from original segment */ + split_flags = TCPH_FLAGS(useg->tcphdr); + remainder_flags = 0; /* ACK added in tcp_output() */ + + if (split_flags & TCP_PSH) { + split_flags &= ~TCP_PSH; + remainder_flags |= TCP_PSH; + } + if (split_flags & TCP_FIN) { + split_flags &= ~TCP_FIN; + remainder_flags |= TCP_FIN; + } + /* SYN should be left on split, RST should not be present with data */ + + seg = tcp_create_segment(pcb, p, remainder_flags, lwip_ntohl(useg->tcphdr->seqno) + split, optflags); + if (seg == NULL) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("tcp_split_unsent_seg: could not create new TCP segment\n")); + goto memerr; + } + +#if TCP_CHECKSUM_ON_COPY + seg->chksum = chksum; + seg->chksum_swapped = chksum_swapped; + seg->flags |= TF_SEG_DATA_CHECKSUMMED; +#endif /* TCP_CHECKSUM_ON_COPY */ + + /* Remove this segment from the queue since trimming it may free pbufs */ + pcb->snd_queuelen -= pbuf_clen(useg->p); + + /* Trim the original pbuf into our split size. At this point our remainder segment must be setup + successfully because we are modifying the original segment */ + pbuf_realloc(useg->p, useg->p->tot_len - remainder); + useg->len -= remainder; + TCPH_SET_FLAG(useg->tcphdr, split_flags); +#if TCP_OVERSIZE_DBGCHECK + /* By trimming, realloc may have actually shrunk the pbuf, so clear oversize_left */ + useg->oversize_left = 0; +#endif /* TCP_OVERSIZE_DBGCHECK */ + + /* Add back to the queue with new trimmed pbuf */ + pcb->snd_queuelen += pbuf_clen(useg->p); + +#if TCP_CHECKSUM_ON_COPY + /* The checksum on the split segment is now incorrect. We need to re-run it over the split */ + useg->chksum = 0; + useg->chksum_swapped = 0; + q = useg->p; + offset = q->tot_len - useg->len; /* Offset due to exposed headers */ + + /* Advance to the pbuf where the offset ends */ + while (q != NULL && offset > q->len) { + offset -= q->len; + q = q->next; + } + LWIP_ASSERT("Found start of payload pbuf", q != NULL); + /* Checksum the first payload pbuf accounting for offset, then other pbufs are all payload */ + for (; q != NULL; offset = 0, q = q->next) { + tcp_seg_add_chksum(~inet_chksum((const u8_t *)q->payload + offset, q->len - offset), q->len - offset, + &useg->chksum, &useg->chksum_swapped); + } +#endif /* TCP_CHECKSUM_ON_COPY */ + + /* Update number of segments on the queues. Note that length now may + * exceed TCP_SND_QUEUELEN! We don't have to touch pcb->snd_buf + * because the total amount of data is constant when packet is split */ + pcb->snd_queuelen += pbuf_clen(seg->p); + + /* Finally insert remainder into queue after split (which stays head) */ + seg->next = useg->next; + useg->next = seg; + +#if TCP_OVERSIZE + /* If remainder is last segment on the unsent, ensure we clear the oversize amount + * because the remainder is always sized to the exact remaining amount */ + if (seg->next == NULL) { + pcb->unsent_oversize = 0; + } +#endif /* TCP_OVERSIZE */ + + return ERR_OK; +memerr: + TCP_STATS_INC(tcp.memerr); + + LWIP_ASSERT("seg == NULL", seg == NULL); + if (p != NULL) { + pbuf_free(p); + } + + return ERR_MEM; +} + +/** + * Called by tcp_close() to send a segment including FIN flag but not data. + * This FIN may be added to an existing segment or a new, otherwise empty + * segment is enqueued. + * + * @param pcb the tcp_pcb over which to send a segment + * @return ERR_OK if sent, another err_t otherwise + */ +err_t +tcp_send_fin(struct tcp_pcb *pcb) +{ + LWIP_ASSERT("tcp_send_fin: invalid pcb", pcb != NULL); + + /* first, try to add the fin to the last unsent segment */ + if (pcb->unsent != NULL) { + struct tcp_seg *last_unsent; + for (last_unsent = pcb->unsent; last_unsent->next != NULL; + last_unsent = last_unsent->next); + + if ((TCPH_FLAGS(last_unsent->tcphdr) & (TCP_SYN | TCP_FIN | TCP_RST)) == 0) { + /* no SYN/FIN/RST flag in the header, we can add the FIN flag */ + TCPH_SET_FLAG(last_unsent->tcphdr, TCP_FIN); + tcp_set_flags(pcb, TF_FIN); + return ERR_OK; + } + } + /* no data, no length, flags, copy=1, no optdata */ + return tcp_enqueue_flags(pcb, TCP_FIN); +} + +/** + * Enqueue SYN or FIN for transmission. + * + * Called by @ref tcp_connect, tcp_listen_input, and @ref tcp_close + * (via @ref tcp_send_fin) + * + * @param pcb Protocol control block for the TCP connection. + * @param flags TCP header flags to set in the outgoing segment. + */ +err_t +tcp_enqueue_flags(struct tcp_pcb *pcb, u8_t flags) +{ + struct pbuf *p; + struct tcp_seg *seg; + u8_t optflags = 0; + u8_t optlen = 0; + + LWIP_DEBUGF(TCP_QLEN_DEBUG, ("tcp_enqueue_flags: queuelen: %"U16_F"\n", (u16_t)pcb->snd_queuelen)); + + LWIP_ASSERT("tcp_enqueue_flags: need either TCP_SYN or TCP_FIN in flags (programmer violates API)", + (flags & (TCP_SYN | TCP_FIN)) != 0); + LWIP_ASSERT("tcp_enqueue_flags: invalid pcb", pcb != NULL); + + /* No need to check pcb->snd_queuelen if only SYN or FIN are allowed! */ + + /* Get options for this segment. This is a special case since this is the + only place where a SYN can be sent. */ + if (flags & TCP_SYN) { + optflags = TF_SEG_OPTS_MSS; +#if LWIP_WND_SCALE + if ((pcb->state != SYN_RCVD) || (pcb->flags & TF_WND_SCALE)) { + /* In a (sent in state SYN_RCVD), the window scale option may only + be sent if we received a window scale option from the remote host. */ + optflags |= TF_SEG_OPTS_WND_SCALE; + } +#endif /* LWIP_WND_SCALE */ +#if LWIP_TCP_SACK_OUT + if ((pcb->state != SYN_RCVD) || (pcb->flags & TF_SACK)) { + /* In a (sent in state SYN_RCVD), the SACK_PERM option may only + be sent if we received a SACK_PERM option from the remote host. */ + optflags |= TF_SEG_OPTS_SACK_PERM; + } +#endif /* LWIP_TCP_SACK_OUT */ + } +#if LWIP_TCP_TIMESTAMPS + if ((pcb->flags & TF_TIMESTAMP) || ((flags & TCP_SYN) && (pcb->state != SYN_RCVD))) { + /* Make sure the timestamp option is only included in data segments if we + agreed about it with the remote host (and in active open SYN segments). */ + optflags |= TF_SEG_OPTS_TS; + } +#endif /* LWIP_TCP_TIMESTAMPS */ + optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(optflags, pcb); + + /* Allocate pbuf with room for TCP header + options */ + if ((p = pbuf_alloc(PBUF_TRANSPORT, optlen, PBUF_RAM)) == NULL) { + tcp_set_flags(pcb, TF_NAGLEMEMERR); + TCP_STATS_INC(tcp.memerr); + return ERR_MEM; + } + LWIP_ASSERT("tcp_enqueue_flags: check that first pbuf can hold optlen", + (p->len >= optlen)); + + /* Allocate memory for tcp_seg, and fill in fields. */ + if ((seg = tcp_create_segment(pcb, p, flags, pcb->snd_lbb, optflags)) == NULL) { + tcp_set_flags(pcb, TF_NAGLEMEMERR); + TCP_STATS_INC(tcp.memerr); + return ERR_MEM; + } + LWIP_ASSERT("seg->tcphdr not aligned", ((mem_ptr_t)seg->tcphdr % LWIP_MIN(MEM_ALIGNMENT, 4)) == 0); + LWIP_ASSERT("tcp_enqueue_flags: invalid segment length", seg->len == 0); + + LWIP_DEBUGF(TCP_OUTPUT_DEBUG | LWIP_DBG_TRACE, + ("tcp_enqueue_flags: queueing %"U32_F":%"U32_F" (0x%"X16_F")\n", + lwip_ntohl(seg->tcphdr->seqno), + lwip_ntohl(seg->tcphdr->seqno) + TCP_TCPLEN(seg), + (u16_t)flags)); + + /* Now append seg to pcb->unsent queue */ + if (pcb->unsent == NULL) { + pcb->unsent = seg; + } else { + struct tcp_seg *useg; + for (useg = pcb->unsent; useg->next != NULL; useg = useg->next); + useg->next = seg; + } +#if TCP_OVERSIZE + /* The new unsent tail has no space */ + pcb->unsent_oversize = 0; +#endif /* TCP_OVERSIZE */ + + /* SYN and FIN bump the sequence number */ + if ((flags & TCP_SYN) || (flags & TCP_FIN)) { + pcb->snd_lbb++; + /* optlen does not influence snd_buf */ + } + if (flags & TCP_FIN) { + tcp_set_flags(pcb, TF_FIN); + } + + /* update number of segments on the queues */ + pcb->snd_queuelen += pbuf_clen(seg->p); + LWIP_DEBUGF(TCP_QLEN_DEBUG, ("tcp_enqueue_flags: %"S16_F" (after enqueued)\n", pcb->snd_queuelen)); + if (pcb->snd_queuelen != 0) { + LWIP_ASSERT("tcp_enqueue_flags: invalid queue length", + pcb->unacked != NULL || pcb->unsent != NULL); + } + + return ERR_OK; +} + +#if LWIP_TCP_TIMESTAMPS +/* Build a timestamp option (12 bytes long) at the specified options pointer) + * + * @param pcb tcp_pcb + * @param opts option pointer where to store the timestamp option + */ +static void +tcp_build_timestamp_option(const struct tcp_pcb *pcb, u32_t *opts) +{ + LWIP_ASSERT("tcp_build_timestamp_option: invalid pcb", pcb != NULL); + + /* Pad with two NOP options to make everything nicely aligned */ + opts[0] = PP_HTONL(0x0101080A); + opts[1] = lwip_htonl(sys_now()); + opts[2] = lwip_htonl(pcb->ts_recent); +} +#endif + +#if LWIP_TCP_SACK_OUT +/** + * Calculates the number of SACK entries that should be generated. + * It takes into account whether TF_SACK flag is set, + * the number of SACK entries in tcp_pcb that are valid, + * as well as the available options size. + * + * @param pcb tcp_pcb + * @param optlen the length of other TCP options (in bytes) + * @return the number of SACK ranges that can be used + */ +static u8_t +tcp_get_num_sacks(const struct tcp_pcb *pcb, u8_t optlen) +{ + u8_t num_sacks = 0; + + LWIP_ASSERT("tcp_get_num_sacks: invalid pcb", pcb != NULL); + + if (pcb->flags & TF_SACK) { + u8_t i; + + /* The first SACK takes up 12 bytes (it includes SACK header and two NOP options), + each additional one - 8 bytes. */ + optlen += 12; + + /* Max options size = 40, number of SACK array entries = LWIP_TCP_MAX_SACK_NUM */ + for (i = 0; (i < LWIP_TCP_MAX_SACK_NUM) && (optlen <= TCP_MAX_OPTION_BYTES) && + LWIP_TCP_SACK_VALID(pcb, i); ++i) { + ++num_sacks; + optlen += 8; + } + } + + return num_sacks; +} + +/** Build a SACK option (12 or more bytes long) at the specified options pointer) + * + * @param pcb tcp_pcb + * @param opts option pointer where to store the SACK option + * @param num_sacks the number of SACKs to store + */ +static void +tcp_build_sack_option(const struct tcp_pcb *pcb, u32_t *opts, u8_t num_sacks) +{ + u8_t i; + + LWIP_ASSERT("tcp_build_sack_option: invalid pcb", pcb != NULL); + LWIP_ASSERT("tcp_build_sack_option: invalid opts", opts != NULL); + + /* Pad with two NOP options to make everything nicely aligned. + We add the length (of just the SACK option, not the NOPs in front of it), + which is 2B of header, plus 8B for each SACK. */ + *(opts++) = PP_HTONL(0x01010500 + 2 + num_sacks * 8); + + for (i = 0; i < num_sacks; ++i) { + *(opts++) = lwip_htonl(pcb->rcv_sacks[i].left); + *(opts++) = lwip_htonl(pcb->rcv_sacks[i].right); + } +} + +#endif + +#if LWIP_WND_SCALE +/** Build a window scale option (3 bytes long) at the specified options pointer) + * + * @param opts option pointer where to store the window scale option + */ +static void +tcp_build_wnd_scale_option(u32_t *opts) +{ + LWIP_ASSERT("tcp_build_wnd_scale_option: invalid opts", opts != NULL); + + /* Pad with one NOP option to make everything nicely aligned */ + opts[0] = PP_HTONL(0x01030300 | TCP_RCV_SCALE); +} +#endif + +/** + * @ingroup tcp_raw + * Find out what we can send and send it + * + * @param pcb Protocol control block for the TCP connection to send data + * @return ERR_OK if data has been sent or nothing to send + * another err_t on error + */ +err_t +tcp_output(struct tcp_pcb *pcb) +{ + struct tcp_seg *seg, *useg; + u32_t wnd, snd_nxt; + err_t err; + struct netif *netif; +#if TCP_CWND_DEBUG + s16_t i = 0; +#endif /* TCP_CWND_DEBUG */ + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ASSERT("tcp_output: invalid pcb", pcb != NULL); + /* pcb->state LISTEN not allowed here */ + LWIP_ASSERT("don't call tcp_output for listen-pcbs", + pcb->state != LISTEN); + + /* First, check if we are invoked by the TCP input processing + code. If so, we do not output anything. Instead, we rely on the + input processing code to call us when input processing is done + with. */ + if (tcp_input_pcb == pcb) { + return ERR_OK; + } + + wnd = LWIP_MIN(pcb->snd_wnd, pcb->cwnd); + + seg = pcb->unsent; + + if (seg == NULL) { + LWIP_DEBUGF(TCP_OUTPUT_DEBUG, ("tcp_output: nothing to send (%p)\n", + (void *)pcb->unsent)); + LWIP_DEBUGF(TCP_CWND_DEBUG, ("tcp_output: snd_wnd %"TCPWNDSIZE_F + ", cwnd %"TCPWNDSIZE_F", wnd %"U32_F + ", seg == NULL, ack %"U32_F"\n", + pcb->snd_wnd, pcb->cwnd, wnd, pcb->lastack)); + + /* If the TF_ACK_NOW flag is set and the ->unsent queue is empty, construct + * an empty ACK segment and send it. */ + if (pcb->flags & TF_ACK_NOW) { + return tcp_send_empty_ack(pcb); + } + /* nothing to send: shortcut out of here */ + goto output_done; + } else { + LWIP_DEBUGF(TCP_CWND_DEBUG, + ("tcp_output: snd_wnd %"TCPWNDSIZE_F", cwnd %"TCPWNDSIZE_F", wnd %"U32_F + ", effwnd %"U32_F", seq %"U32_F", ack %"U32_F"\n", + pcb->snd_wnd, pcb->cwnd, wnd, + lwip_ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len, + lwip_ntohl(seg->tcphdr->seqno), pcb->lastack)); + } + + netif = tcp_route(pcb, &pcb->local_ip, &pcb->remote_ip); + if (netif == NULL) { + return ERR_RTE; + } + + /* If we don't have a local IP address, we get one from netif */ + if (ip_addr_isany(&pcb->local_ip)) { + const ip_addr_t *local_ip = ip_netif_get_local_ip(netif, &pcb->remote_ip); + if (local_ip == NULL) { + return ERR_RTE; + } + ip_addr_copy(pcb->local_ip, *local_ip); + } + + /* Handle the current segment not fitting within the window */ + if (lwip_ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len > wnd) { + /* We need to start the persistent timer when the next unsent segment does not fit + * within the remaining (could be 0) send window and RTO timer is not running (we + * have no in-flight data). If window is still too small after persist timer fires, + * then we split the segment. We don't consider the congestion window since a cwnd + * smaller than 1 SMSS implies in-flight data + */ + if (wnd == pcb->snd_wnd && pcb->unacked == NULL && pcb->persist_backoff == 0) { + pcb->persist_cnt = 0; + pcb->persist_backoff = 1; + pcb->persist_probe = 0; + } + /* We need an ACK, but can't send data now, so send an empty ACK */ + if (pcb->flags & TF_ACK_NOW) { + return tcp_send_empty_ack(pcb); + } + goto output_done; + } + /* Stop persist timer, above conditions are not active */ + pcb->persist_backoff = 0; + + /* useg should point to last segment on unacked queue */ + useg = pcb->unacked; + if (useg != NULL) { + for (; useg->next != NULL; useg = useg->next); + } + /* data available and window allows it to be sent? */ + while (seg != NULL && + lwip_ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len <= wnd) { + LWIP_ASSERT("RST not expected here!", + (TCPH_FLAGS(seg->tcphdr) & TCP_RST) == 0); + /* Stop sending if the nagle algorithm would prevent it + * Don't stop: + * - if tcp_write had a memory error before (prevent delayed ACK timeout) or + * - if FIN was already enqueued for this PCB (SYN is always alone in a segment - + * either seg->next != NULL or pcb->unacked == NULL; + * RST is no sent using tcp_write/tcp_output. + */ + if ((tcp_do_output_nagle(pcb) == 0) && + ((pcb->flags & (TF_NAGLEMEMERR | TF_FIN)) == 0)) { + break; + } +#if TCP_CWND_DEBUG + LWIP_DEBUGF(TCP_CWND_DEBUG, ("tcp_output: snd_wnd %"TCPWNDSIZE_F", cwnd %"TCPWNDSIZE_F", wnd %"U32_F", effwnd %"U32_F", seq %"U32_F", ack %"U32_F", i %"S16_F"\n", + pcb->snd_wnd, pcb->cwnd, wnd, + lwip_ntohl(seg->tcphdr->seqno) + seg->len - + pcb->lastack, + lwip_ntohl(seg->tcphdr->seqno), pcb->lastack, i)); + ++i; +#endif /* TCP_CWND_DEBUG */ + + if (pcb->state != SYN_SENT) { + TCPH_SET_FLAG(seg->tcphdr, TCP_ACK); + } + + err = tcp_output_segment(seg, pcb, netif); + if (err != ERR_OK) { + /* segment could not be sent, for whatever reason */ + tcp_set_flags(pcb, TF_NAGLEMEMERR); + return err; + } +#if TCP_OVERSIZE_DBGCHECK + seg->oversize_left = 0; +#endif /* TCP_OVERSIZE_DBGCHECK */ + pcb->unsent = seg->next; + if (pcb->state != SYN_SENT) { + tcp_clear_flags(pcb, TF_ACK_DELAY | TF_ACK_NOW); + } + snd_nxt = lwip_ntohl(seg->tcphdr->seqno) + TCP_TCPLEN(seg); + if (TCP_SEQ_LT(pcb->snd_nxt, snd_nxt)) { + pcb->snd_nxt = snd_nxt; + } + /* put segment on unacknowledged list if length > 0 */ + if (TCP_TCPLEN(seg) > 0) { + seg->next = NULL; + /* unacked list is empty? */ + if (pcb->unacked == NULL) { + pcb->unacked = seg; + useg = seg; + /* unacked list is not empty? */ + } else { + /* In the case of fast retransmit, the packet should not go to the tail + * of the unacked queue, but rather somewhere before it. We need to check for + * this case. -STJ Jul 27, 2004 */ + if (TCP_SEQ_LT(lwip_ntohl(seg->tcphdr->seqno), lwip_ntohl(useg->tcphdr->seqno))) { + /* add segment to before tail of unacked list, keeping the list sorted */ + struct tcp_seg **cur_seg = &(pcb->unacked); + while (*cur_seg && + TCP_SEQ_LT(lwip_ntohl((*cur_seg)->tcphdr->seqno), lwip_ntohl(seg->tcphdr->seqno))) { + cur_seg = &((*cur_seg)->next ); + } + seg->next = (*cur_seg); + (*cur_seg) = seg; + } else { + /* add segment to tail of unacked list */ + useg->next = seg; + useg = useg->next; + } + } + /* do not queue empty segments on the unacked list */ + } else { + tcp_seg_free(seg); + } + seg = pcb->unsent; + } +#if TCP_OVERSIZE + if (pcb->unsent == NULL) { + /* last unsent has been removed, reset unsent_oversize */ + pcb->unsent_oversize = 0; + } +#endif /* TCP_OVERSIZE */ + +output_done: + tcp_clear_flags(pcb, TF_NAGLEMEMERR); + return ERR_OK; +} + +/** Check if a segment's pbufs are used by someone else than TCP. + * This can happen on retransmission if the pbuf of this segment is still + * referenced by the netif driver due to deferred transmission. + * This is the case (only!) if someone down the TX call path called + * pbuf_ref() on one of the pbufs! + * + * @arg seg the tcp segment to check + * @return 1 if ref != 1, 0 if ref == 1 + */ +static int +tcp_output_segment_busy(const struct tcp_seg *seg) +{ + LWIP_ASSERT("tcp_output_segment_busy: invalid seg", seg != NULL); + + /* We only need to check the first pbuf here: + If a pbuf is queued for transmission, a driver calls pbuf_ref(), + which only changes the ref count of the first pbuf */ + if (seg->p->ref != 1) { + /* other reference found */ + return 1; + } + /* no other references found */ + return 0; +} + +/** + * Called by tcp_output() to actually send a TCP segment over IP. + * + * @param seg the tcp_seg to send + * @param pcb the tcp_pcb for the TCP connection used to send the segment + * @param netif the netif used to send the segment + */ +static err_t +tcp_output_segment(struct tcp_seg *seg, struct tcp_pcb *pcb, struct netif *netif) +{ + err_t err; + u16_t len; + u32_t *opts; +#if TCP_CHECKSUM_ON_COPY + int seg_chksum_was_swapped = 0; +#endif + + LWIP_ASSERT("tcp_output_segment: invalid seg", seg != NULL); + LWIP_ASSERT("tcp_output_segment: invalid pcb", pcb != NULL); + LWIP_ASSERT("tcp_output_segment: invalid netif", netif != NULL); + + if (tcp_output_segment_busy(seg)) { + /* This should not happen: rexmit functions should have checked this. + However, since this function modifies p->len, we must not continue in this case. */ + LWIP_DEBUGF(TCP_RTO_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("tcp_output_segment: segment busy\n")); + return ERR_OK; + } + + /* The TCP header has already been constructed, but the ackno and + wnd fields remain. */ + seg->tcphdr->ackno = lwip_htonl(pcb->rcv_nxt); + + /* advertise our receive window size in this TCP segment */ +#if LWIP_WND_SCALE + if (seg->flags & TF_SEG_OPTS_WND_SCALE) { + /* The Window field in a SYN segment itself (the only type where we send + the window scale option) is never scaled. */ + seg->tcphdr->wnd = lwip_htons(TCPWND_MIN16(pcb->rcv_ann_wnd)); + } else +#endif /* LWIP_WND_SCALE */ + { + seg->tcphdr->wnd = lwip_htons(TCPWND_MIN16(RCV_WND_SCALE(pcb, pcb->rcv_ann_wnd))); + } + + pcb->rcv_ann_right_edge = pcb->rcv_nxt + pcb->rcv_ann_wnd; + + /* Add any requested options. NB MSS option is only set on SYN + packets, so ignore it here */ + /* cast through void* to get rid of alignment warnings */ + opts = (u32_t *)(void *)(seg->tcphdr + 1); + if (seg->flags & TF_SEG_OPTS_MSS) { + u16_t mss; +#if TCP_CALCULATE_EFF_SEND_MSS + mss = tcp_eff_send_mss_netif(TCP_MSS, netif, &pcb->remote_ip); +#else /* TCP_CALCULATE_EFF_SEND_MSS */ + mss = TCP_MSS; +#endif /* TCP_CALCULATE_EFF_SEND_MSS */ + *opts = TCP_BUILD_MSS_OPTION(mss); + opts += 1; + } +#if LWIP_TCP_TIMESTAMPS + pcb->ts_lastacksent = pcb->rcv_nxt; + + if (seg->flags & TF_SEG_OPTS_TS) { + tcp_build_timestamp_option(pcb, opts); + opts += 3; + } +#endif +#if LWIP_WND_SCALE + if (seg->flags & TF_SEG_OPTS_WND_SCALE) { + tcp_build_wnd_scale_option(opts); + opts += 1; + } +#endif +#if LWIP_TCP_SACK_OUT + if (seg->flags & TF_SEG_OPTS_SACK_PERM) { + /* Pad with two NOP options to make everything nicely aligned + * NOTE: When we send both timestamp and SACK_PERM options, + * we could use the first two NOPs before the timestamp to store SACK_PERM option, + * but that would complicate the code. + */ + *(opts++) = PP_HTONL(0x01010402); + } +#endif + + /* Set retransmission timer running if it is not currently enabled + This must be set before checking the route. */ + if (pcb->rtime < 0) { + pcb->rtime = 0; + } + + if (pcb->rttest == 0) { + pcb->rttest = tcp_ticks; + pcb->rtseq = lwip_ntohl(seg->tcphdr->seqno); + + LWIP_DEBUGF(TCP_RTO_DEBUG, ("tcp_output_segment: rtseq %"U32_F"\n", pcb->rtseq)); + } + LWIP_DEBUGF(TCP_OUTPUT_DEBUG, ("tcp_output_segment: %"U32_F":%"U32_F"\n", + lwip_htonl(seg->tcphdr->seqno), lwip_htonl(seg->tcphdr->seqno) + + seg->len)); + + len = (u16_t)((u8_t *)seg->tcphdr - (u8_t *)seg->p->payload); + if (len == 0) { + /** Exclude retransmitted segments from this count. */ + MIB2_STATS_INC(mib2.tcpoutsegs); + } + + seg->p->len -= len; + seg->p->tot_len -= len; + + seg->p->payload = seg->tcphdr; + + seg->tcphdr->chksum = 0; + +#ifdef LWIP_HOOK_TCP_OUT_ADD_TCPOPTS + opts = LWIP_HOOK_TCP_OUT_ADD_TCPOPTS(seg->p, seg->tcphdr, pcb, opts); +#endif + LWIP_ASSERT("options not filled", (u8_t *)opts == ((u8_t *)(seg->tcphdr + 1)) + LWIP_TCP_OPT_LENGTH_SEGMENT(seg->flags, pcb)); + +#if CHECKSUM_GEN_TCP + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_TCP) { +#if TCP_CHECKSUM_ON_COPY + u32_t acc; +#if TCP_CHECKSUM_ON_COPY_SANITY_CHECK + u16_t chksum_slow = ip_chksum_pseudo(seg->p, IP_PROTO_TCP, + seg->p->tot_len, &pcb->local_ip, &pcb->remote_ip); +#endif /* TCP_CHECKSUM_ON_COPY_SANITY_CHECK */ + if ((seg->flags & TF_SEG_DATA_CHECKSUMMED) == 0) { + LWIP_ASSERT("data included but not checksummed", + seg->p->tot_len == TCPH_HDRLEN_BYTES(seg->tcphdr)); + } + + /* rebuild TCP header checksum (TCP header changes for retransmissions!) */ + acc = ip_chksum_pseudo_partial(seg->p, IP_PROTO_TCP, + seg->p->tot_len, TCPH_HDRLEN_BYTES(seg->tcphdr), &pcb->local_ip, &pcb->remote_ip); + /* add payload checksum */ + if (seg->chksum_swapped) { + seg_chksum_was_swapped = 1; + seg->chksum = SWAP_BYTES_IN_WORD(seg->chksum); + seg->chksum_swapped = 0; + } + acc = (u16_t)~acc + seg->chksum; + seg->tcphdr->chksum = (u16_t)~FOLD_U32T(acc); +#if TCP_CHECKSUM_ON_COPY_SANITY_CHECK + if (chksum_slow != seg->tcphdr->chksum) { + TCP_CHECKSUM_ON_COPY_SANITY_CHECK_FAIL( + ("tcp_output_segment: calculated checksum is %"X16_F" instead of %"X16_F"\n", + seg->tcphdr->chksum, chksum_slow)); + seg->tcphdr->chksum = chksum_slow; + } +#endif /* TCP_CHECKSUM_ON_COPY_SANITY_CHECK */ +#else /* TCP_CHECKSUM_ON_COPY */ + seg->tcphdr->chksum = ip_chksum_pseudo(seg->p, IP_PROTO_TCP, + seg->p->tot_len, &pcb->local_ip, &pcb->remote_ip); +#endif /* TCP_CHECKSUM_ON_COPY */ + } +#endif /* CHECKSUM_GEN_TCP */ + TCP_STATS_INC(tcp.xmit); + + NETIF_SET_HINTS(netif, &(pcb->netif_hints)); + err = ip_output_if(seg->p, &pcb->local_ip, &pcb->remote_ip, pcb->ttl, + pcb->tos, IP_PROTO_TCP, netif); + NETIF_RESET_HINTS(netif); + +#if TCP_CHECKSUM_ON_COPY + if (seg_chksum_was_swapped) { + /* if data is added to this segment later, chksum needs to be swapped, + so restore this now */ + seg->chksum = SWAP_BYTES_IN_WORD(seg->chksum); + seg->chksum_swapped = 1; + } +#endif + + return err; +} + +/** + * Requeue all unacked segments for retransmission + * + * Called by tcp_slowtmr() for slow retransmission. + * + * @param pcb the tcp_pcb for which to re-enqueue all unacked segments + */ +err_t +tcp_rexmit_rto_prepare(struct tcp_pcb *pcb) +{ + struct tcp_seg *seg; + + LWIP_ASSERT("tcp_rexmit_rto_prepare: invalid pcb", pcb != NULL); + + if (pcb->unacked == NULL) { + return ERR_VAL; + } + + /* Move all unacked segments to the head of the unsent queue. + However, give up if any of the unsent pbufs are still referenced by the + netif driver due to deferred transmission. No point loading the link further + if it is struggling to flush its buffered writes. */ + for (seg = pcb->unacked; seg->next != NULL; seg = seg->next) { + if (tcp_output_segment_busy(seg)) { + LWIP_DEBUGF(TCP_RTO_DEBUG, ("tcp_rexmit_rto: segment busy\n")); + return ERR_VAL; + } + } + if (tcp_output_segment_busy(seg)) { + LWIP_DEBUGF(TCP_RTO_DEBUG, ("tcp_rexmit_rto: segment busy\n")); + return ERR_VAL; + } + /* concatenate unsent queue after unacked queue */ + seg->next = pcb->unsent; +#if TCP_OVERSIZE_DBGCHECK + /* if last unsent changed, we need to update unsent_oversize */ + if (pcb->unsent == NULL) { + pcb->unsent_oversize = seg->oversize_left; + } +#endif /* TCP_OVERSIZE_DBGCHECK */ + /* unsent queue is the concatenated queue (of unacked, unsent) */ + pcb->unsent = pcb->unacked; + /* unacked queue is now empty */ + pcb->unacked = NULL; + + /* Mark RTO in-progress */ + tcp_set_flags(pcb, TF_RTO); + /* Record the next byte following retransmit */ + pcb->rto_end = lwip_ntohl(seg->tcphdr->seqno) + TCP_TCPLEN(seg); + /* Don't take any RTT measurements after retransmitting. */ + pcb->rttest = 0; + + return ERR_OK; +} + +/** + * Requeue all unacked segments for retransmission + * + * Called by tcp_slowtmr() for slow retransmission. + * + * @param pcb the tcp_pcb for which to re-enqueue all unacked segments + */ +void +tcp_rexmit_rto_commit(struct tcp_pcb *pcb) +{ + LWIP_ASSERT("tcp_rexmit_rto_commit: invalid pcb", pcb != NULL); + + /* increment number of retransmissions */ + if (pcb->nrtx < 0xFF) { + ++pcb->nrtx; + } + /* Do the actual retransmission */ + tcp_output(pcb); +} + +/** + * Requeue all unacked segments for retransmission + * + * Called by tcp_process() only, tcp_slowtmr() needs to do some things between + * "prepare" and "commit". + * + * @param pcb the tcp_pcb for which to re-enqueue all unacked segments + */ +void +tcp_rexmit_rto(struct tcp_pcb *pcb) +{ + LWIP_ASSERT("tcp_rexmit_rto: invalid pcb", pcb != NULL); + + if (tcp_rexmit_rto_prepare(pcb) == ERR_OK) { + tcp_rexmit_rto_commit(pcb); + } +} + +/** + * Requeue the first unacked segment for retransmission + * + * Called by tcp_receive() for fast retransmit. + * + * @param pcb the tcp_pcb for which to retransmit the first unacked segment + */ +err_t +tcp_rexmit(struct tcp_pcb *pcb) +{ + struct tcp_seg *seg; + struct tcp_seg **cur_seg; + + LWIP_ASSERT("tcp_rexmit: invalid pcb", pcb != NULL); + + if (pcb->unacked == NULL) { + return ERR_VAL; + } + + seg = pcb->unacked; + + /* Give up if the segment is still referenced by the netif driver + due to deferred transmission. */ + if (tcp_output_segment_busy(seg)) { + LWIP_DEBUGF(TCP_RTO_DEBUG, ("tcp_rexmit busy\n")); + return ERR_VAL; + } + + /* Move the first unacked segment to the unsent queue */ + /* Keep the unsent queue sorted. */ + pcb->unacked = seg->next; + + cur_seg = &(pcb->unsent); + while (*cur_seg && + TCP_SEQ_LT(lwip_ntohl((*cur_seg)->tcphdr->seqno), lwip_ntohl(seg->tcphdr->seqno))) { + cur_seg = &((*cur_seg)->next ); + } + seg->next = *cur_seg; + *cur_seg = seg; +#if TCP_OVERSIZE + if (seg->next == NULL) { + /* the retransmitted segment is last in unsent, so reset unsent_oversize */ + pcb->unsent_oversize = 0; + } +#endif /* TCP_OVERSIZE */ + + if (pcb->nrtx < 0xFF) { + ++pcb->nrtx; + } + + /* Don't take any rtt measurements after retransmitting. */ + pcb->rttest = 0; + + /* Do the actual retransmission. */ + MIB2_STATS_INC(mib2.tcpretranssegs); + /* No need to call tcp_output: we are always called from tcp_input() + and thus tcp_output directly returns. */ + return ERR_OK; +} + + +/** + * Handle retransmission after three dupacks received + * + * @param pcb the tcp_pcb for which to retransmit the first unacked segment + */ +void +tcp_rexmit_fast(struct tcp_pcb *pcb) +{ + LWIP_ASSERT("tcp_rexmit_fast: invalid pcb", pcb != NULL); + + if (pcb->unacked != NULL && !(pcb->flags & TF_INFR)) { + /* This is fast retransmit. Retransmit the first unacked segment. */ + LWIP_DEBUGF(TCP_FR_DEBUG, + ("tcp_receive: dupacks %"U16_F" (%"U32_F + "), fast retransmit %"U32_F"\n", + (u16_t)pcb->dupacks, pcb->lastack, + lwip_ntohl(pcb->unacked->tcphdr->seqno))); + if (tcp_rexmit(pcb) == ERR_OK) { + /* Set ssthresh to half of the minimum of the current + * cwnd and the advertised window */ + pcb->ssthresh = LWIP_MIN(pcb->cwnd, pcb->snd_wnd) / 2; + + /* The minimum value for ssthresh should be 2 MSS */ + if (pcb->ssthresh < (2U * pcb->mss)) { + LWIP_DEBUGF(TCP_FR_DEBUG, + ("tcp_receive: The minimum value for ssthresh %"TCPWNDSIZE_F + " should be min 2 mss %"U16_F"...\n", + pcb->ssthresh, (u16_t)(2 * pcb->mss))); + pcb->ssthresh = 2 * pcb->mss; + } + + pcb->cwnd = pcb->ssthresh + 3 * pcb->mss; + tcp_set_flags(pcb, TF_INFR); + + /* Reset the retransmission timer to prevent immediate rto retransmissions */ + pcb->rtime = 0; + } + } +} + +static struct pbuf * +tcp_output_alloc_header_common(u32_t ackno, u16_t optlen, u16_t datalen, + u32_t seqno_be /* already in network byte order */, + u16_t src_port, u16_t dst_port, u8_t flags, u16_t wnd) +{ + struct tcp_hdr *tcphdr; + struct pbuf *p; + + p = pbuf_alloc(PBUF_IP, TCP_HLEN + optlen + datalen, PBUF_RAM); + if (p != NULL) { + LWIP_ASSERT("check that first pbuf can hold struct tcp_hdr", + (p->len >= TCP_HLEN + optlen)); + tcphdr = (struct tcp_hdr *)p->payload; + tcphdr->src = lwip_htons(src_port); + tcphdr->dest = lwip_htons(dst_port); + tcphdr->seqno = seqno_be; + tcphdr->ackno = lwip_htonl(ackno); + TCPH_HDRLEN_FLAGS_SET(tcphdr, (5 + optlen / 4), flags); + tcphdr->wnd = lwip_htons(wnd); + tcphdr->chksum = 0; + tcphdr->urgp = 0; + } + return p; +} + +/** Allocate a pbuf and create a tcphdr at p->payload, used for output + * functions other than the default tcp_output -> tcp_output_segment + * (e.g. tcp_send_empty_ack, etc.) + * + * @param pcb tcp pcb for which to send a packet (used to initialize tcp_hdr) + * @param optlen length of header-options + * @param datalen length of tcp data to reserve in pbuf + * @param seqno_be seqno in network byte order (big-endian) + * @return pbuf with p->payload being the tcp_hdr + */ +static struct pbuf * +tcp_output_alloc_header(struct tcp_pcb *pcb, u16_t optlen, u16_t datalen, + u32_t seqno_be /* already in network byte order */) +{ + struct pbuf *p; + + LWIP_ASSERT("tcp_output_alloc_header: invalid pcb", pcb != NULL); + + p = tcp_output_alloc_header_common(pcb->rcv_nxt, optlen, datalen, + seqno_be, pcb->local_port, pcb->remote_port, TCP_ACK, + TCPWND_MIN16(RCV_WND_SCALE(pcb, pcb->rcv_ann_wnd))); + if (p != NULL) { + /* If we're sending a packet, update the announced right window edge */ + pcb->rcv_ann_right_edge = pcb->rcv_nxt + pcb->rcv_ann_wnd; + } + return p; +} + +/* Fill in options for control segments */ +static void +tcp_output_fill_options(const struct tcp_pcb *pcb, struct pbuf *p, u8_t optflags, u8_t num_sacks) +{ + struct tcp_hdr *tcphdr; + u32_t *opts; + u16_t sacks_len = 0; + + LWIP_ASSERT("tcp_output_fill_options: invalid pbuf", p != NULL); + + tcphdr = (struct tcp_hdr *)p->payload; + opts = (u32_t *)(void *)(tcphdr + 1); + + /* NB. MSS and window scale options are only sent on SYNs, so ignore them here */ + +#if LWIP_TCP_TIMESTAMPS + if (optflags & TF_SEG_OPTS_TS) { + tcp_build_timestamp_option(pcb, opts); + opts += 3; + } +#endif + +#if LWIP_TCP_SACK_OUT + if (pcb && (num_sacks > 0)) { + tcp_build_sack_option(pcb, opts, num_sacks); + /* 1 word for SACKs header (including 2xNOP), and 2 words for each SACK */ + sacks_len = 1 + num_sacks * 2; + opts += sacks_len; + } +#else + LWIP_UNUSED_ARG(num_sacks); +#endif + +#ifdef LWIP_HOOK_TCP_OUT_ADD_TCPOPTS + opts = LWIP_HOOK_TCP_OUT_ADD_TCPOPTS(p, tcphdr, pcb, opts); +#endif + + LWIP_UNUSED_ARG(pcb); + LWIP_UNUSED_ARG(sacks_len); + LWIP_ASSERT("options not filled", (u8_t *)opts == ((u8_t *)(tcphdr + 1)) + sacks_len * 4 + LWIP_TCP_OPT_LENGTH_SEGMENT(optflags, pcb)); + LWIP_UNUSED_ARG(optflags); /* for LWIP_NOASSERT */ + LWIP_UNUSED_ARG(opts); /* for LWIP_NOASSERT */ +} + +/** Output a control segment pbuf to IP. + * + * Called from tcp_rst, tcp_send_empty_ack, tcp_keepalive and tcp_zero_window_probe, + * this function combines selecting a netif for transmission, generating the tcp + * header checksum and calling ip_output_if while handling netif hints and stats. + */ +static err_t +tcp_output_control_segment(const struct tcp_pcb *pcb, struct pbuf *p, + const ip_addr_t *src, const ip_addr_t *dst) +{ + err_t err; + struct netif *netif; + + LWIP_ASSERT("tcp_output_control_segment: invalid pbuf", p != NULL); + + netif = tcp_route(pcb, src, dst); + if (netif == NULL) { + err = ERR_RTE; + } else { + u8_t ttl, tos; +#if CHECKSUM_GEN_TCP + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_TCP) { + struct tcp_hdr *tcphdr = (struct tcp_hdr *)p->payload; + tcphdr->chksum = ip_chksum_pseudo(p, IP_PROTO_TCP, p->tot_len, + src, dst); + } +#endif + if (pcb != NULL) { + NETIF_SET_HINTS(netif, LWIP_CONST_CAST(struct netif_hint*, &(pcb->netif_hints))); + ttl = pcb->ttl; + tos = pcb->tos; + } else { + /* Send output with hardcoded TTL/HL since we have no access to the pcb */ + ttl = TCP_TTL; + tos = 0; + } + TCP_STATS_INC(tcp.xmit); + err = ip_output_if(p, src, dst, ttl, tos, IP_PROTO_TCP, netif); + NETIF_RESET_HINTS(netif); + } + pbuf_free(p); + return err; +} + +/** + * Send a TCP RESET packet (empty segment with RST flag set) either to + * abort a connection or to show that there is no matching local connection + * for a received segment. + * + * Called by tcp_abort() (to abort a local connection), tcp_input() (if no + * matching local pcb was found), tcp_listen_input() (if incoming segment + * has ACK flag set) and tcp_process() (received segment in the wrong state) + * + * Since a RST segment is in most cases not sent for an active connection, + * tcp_rst() has a number of arguments that are taken from a tcp_pcb for + * most other segment output functions. + * + * @param pcb TCP pcb (may be NULL if no pcb is available) + * @param seqno the sequence number to use for the outgoing segment + * @param ackno the acknowledge number to use for the outgoing segment + * @param local_ip the local IP address to send the segment from + * @param remote_ip the remote IP address to send the segment to + * @param local_port the local TCP port to send the segment from + * @param remote_port the remote TCP port to send the segment to + */ +void +tcp_rst(const struct tcp_pcb *pcb, u32_t seqno, u32_t ackno, + const ip_addr_t *local_ip, const ip_addr_t *remote_ip, + u16_t local_port, u16_t remote_port) +{ + struct pbuf *p; + u16_t wnd; + u8_t optlen; + + LWIP_ASSERT("tcp_rst: invalid local_ip", local_ip != NULL); + LWIP_ASSERT("tcp_rst: invalid remote_ip", remote_ip != NULL); + + optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(0, pcb); + +#if LWIP_WND_SCALE + wnd = PP_HTONS(((TCP_WND >> TCP_RCV_SCALE) & 0xFFFF)); +#else + wnd = PP_HTONS(TCP_WND); +#endif + + p = tcp_output_alloc_header_common(ackno, optlen, 0, lwip_htonl(seqno), local_port, + remote_port, TCP_RST | TCP_ACK, wnd); + if (p == NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_rst: could not allocate memory for pbuf\n")); + return; + } + tcp_output_fill_options(pcb, p, 0, optlen); + + MIB2_STATS_INC(mib2.tcpoutrsts); + + tcp_output_control_segment(pcb, p, local_ip, remote_ip); + LWIP_DEBUGF(TCP_RST_DEBUG, ("tcp_rst: seqno %"U32_F" ackno %"U32_F".\n", seqno, ackno)); +} + +/** + * Send an ACK without data. + * + * @param pcb Protocol control block for the TCP connection to send the ACK + */ +err_t +tcp_send_empty_ack(struct tcp_pcb *pcb) +{ + err_t err; + struct pbuf *p; + u8_t optlen, optflags = 0; + u8_t num_sacks = 0; + + LWIP_ASSERT("tcp_send_empty_ack: invalid pcb", pcb != NULL); + +#if LWIP_TCP_TIMESTAMPS + if (pcb->flags & TF_TIMESTAMP) { + optflags = TF_SEG_OPTS_TS; + } +#endif + optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(optflags, pcb); + +#if LWIP_TCP_SACK_OUT + /* For now, SACKs are only sent with empty ACKs */ + if ((num_sacks = tcp_get_num_sacks(pcb, optlen)) > 0) { + optlen += 4 + num_sacks * 8; /* 4 bytes for header (including 2*NOP), plus 8B for each SACK */ + } +#endif + + p = tcp_output_alloc_header(pcb, optlen, 0, lwip_htonl(pcb->snd_nxt)); + if (p == NULL) { + /* let tcp_fasttmr retry sending this ACK */ + tcp_set_flags(pcb, TF_ACK_DELAY | TF_ACK_NOW); + LWIP_DEBUGF(TCP_OUTPUT_DEBUG, ("tcp_output: (ACK) could not allocate pbuf\n")); + return ERR_BUF; + } + tcp_output_fill_options(pcb, p, optflags, num_sacks); + +#if LWIP_TCP_TIMESTAMPS + pcb->ts_lastacksent = pcb->rcv_nxt; +#endif + + LWIP_DEBUGF(TCP_OUTPUT_DEBUG, + ("tcp_output: sending ACK for %"U32_F"\n", pcb->rcv_nxt)); + err = tcp_output_control_segment(pcb, p, &pcb->local_ip, &pcb->remote_ip); + if (err != ERR_OK) { + /* let tcp_fasttmr retry sending this ACK */ + tcp_set_flags(pcb, TF_ACK_DELAY | TF_ACK_NOW); + } else { + /* remove ACK flags from the PCB, as we sent an empty ACK now */ + tcp_clear_flags(pcb, TF_ACK_DELAY | TF_ACK_NOW); + } + + return err; +} + +/** + * Send keepalive packets to keep a connection active although + * no data is sent over it. + * + * Called by tcp_slowtmr() + * + * @param pcb the tcp_pcb for which to send a keepalive packet + */ +err_t +tcp_keepalive(struct tcp_pcb *pcb) +{ + err_t err; + struct pbuf *p; + u8_t optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(0, pcb); + + LWIP_ASSERT("tcp_keepalive: invalid pcb", pcb != NULL); + + LWIP_DEBUGF(TCP_DEBUG, ("tcp_keepalive: sending KEEPALIVE probe to ")); + ip_addr_debug_print_val(TCP_DEBUG, pcb->remote_ip); + LWIP_DEBUGF(TCP_DEBUG, ("\n")); + + LWIP_DEBUGF(TCP_DEBUG, ("tcp_keepalive: tcp_ticks %"U32_F" pcb->tmr %"U32_F" pcb->keep_cnt_sent %"U16_F"\n", + tcp_ticks, pcb->tmr, (u16_t)pcb->keep_cnt_sent)); + + p = tcp_output_alloc_header(pcb, optlen, 0, lwip_htonl(pcb->snd_nxt - 1)); + if (p == NULL) { + LWIP_DEBUGF(TCP_DEBUG, + ("tcp_keepalive: could not allocate memory for pbuf\n")); + return ERR_MEM; + } + tcp_output_fill_options(pcb, p, 0, optlen); + err = tcp_output_control_segment(pcb, p, &pcb->local_ip, &pcb->remote_ip); + + LWIP_DEBUGF(TCP_DEBUG, ("tcp_keepalive: seqno %"U32_F" ackno %"U32_F" err %d.\n", + pcb->snd_nxt - 1, pcb->rcv_nxt, (int)err)); + return err; +} + +/** + * Send persist timer zero-window probes to keep a connection active + * when a window update is lost. + * + * Called by tcp_slowtmr() + * + * @param pcb the tcp_pcb for which to send a zero-window probe packet + */ +err_t +tcp_zero_window_probe(struct tcp_pcb *pcb) +{ + err_t err; + struct pbuf *p; + struct tcp_hdr *tcphdr; + struct tcp_seg *seg; + u16_t len; + u8_t is_fin; + u32_t snd_nxt; + u8_t optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(0, pcb); + + LWIP_ASSERT("tcp_zero_window_probe: invalid pcb", pcb != NULL); + + LWIP_DEBUGF(TCP_DEBUG, ("tcp_zero_window_probe: sending ZERO WINDOW probe to ")); + ip_addr_debug_print_val(TCP_DEBUG, pcb->remote_ip); + LWIP_DEBUGF(TCP_DEBUG, ("\n")); + + LWIP_DEBUGF(TCP_DEBUG, + ("tcp_zero_window_probe: tcp_ticks %"U32_F + " pcb->tmr %"U32_F" pcb->keep_cnt_sent %"U16_F"\n", + tcp_ticks, pcb->tmr, (u16_t)pcb->keep_cnt_sent)); + + /* Only consider unsent, persist timer should be off when there is data in-flight */ + seg = pcb->unsent; + if (seg == NULL) { + /* Not expected, persist timer should be off when the send buffer is empty */ + return ERR_OK; + } + + /* increment probe count. NOTE: we record probe even if it fails + to actually transmit due to an error. This ensures memory exhaustion/ + routing problem doesn't leave a zero-window pcb as an indefinite zombie. + RTO mechanism has similar behavior, see pcb->nrtx */ + if (pcb->persist_probe < 0xFF) { + ++pcb->persist_probe; + } + + is_fin = ((TCPH_FLAGS(seg->tcphdr) & TCP_FIN) != 0) && (seg->len == 0); + /* we want to send one seqno: either FIN or data (no options) */ + len = is_fin ? 0 : 1; + + p = tcp_output_alloc_header(pcb, optlen, len, seg->tcphdr->seqno); + if (p == NULL) { + LWIP_DEBUGF(TCP_DEBUG, ("tcp_zero_window_probe: no memory for pbuf\n")); + return ERR_MEM; + } + tcphdr = (struct tcp_hdr *)p->payload; + + if (is_fin) { + /* FIN segment, no data */ + TCPH_FLAGS_SET(tcphdr, TCP_ACK | TCP_FIN); + } else { + /* Data segment, copy in one byte from the head of the unacked queue */ + char *d = ((char *)p->payload + TCP_HLEN); + /* Depending on whether the segment has already been sent (unacked) or not + (unsent), seg->p->payload points to the IP header or TCP header. + Ensure we copy the first TCP data byte: */ + pbuf_copy_partial(seg->p, d, 1, seg->p->tot_len - seg->len); + } + + /* The byte may be acknowledged without the window being opened. */ + snd_nxt = lwip_ntohl(seg->tcphdr->seqno) + 1; + if (TCP_SEQ_LT(pcb->snd_nxt, snd_nxt)) { + pcb->snd_nxt = snd_nxt; + } + tcp_output_fill_options(pcb, p, 0, optlen); + + err = tcp_output_control_segment(pcb, p, &pcb->local_ip, &pcb->remote_ip); + + LWIP_DEBUGF(TCP_DEBUG, ("tcp_zero_window_probe: seqno %"U32_F + " ackno %"U32_F" err %d.\n", + pcb->snd_nxt - 1, pcb->rcv_nxt, (int)err)); + return err; +} +#endif /* LWIP_TCP */ diff --git a/Other/tun2socks/core/c/core/timeouts.c b/Other/tun2socks/core/c/core/timeouts.c new file mode 100644 index 0000000..f37acfe --- /dev/null +++ b/Other/tun2socks/core/c/core/timeouts.c @@ -0,0 +1,451 @@ +/** + * @file + * Stack-internal timers implementation. + * This file includes timer callbacks for stack-internal timers as well as + * functions to set up or stop timers and check for expired timers. + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * Simon Goldschmidt + * + */ + +#include "lwip/opt.h" + +#include "lwip/timeouts.h" +#include "lwip/priv/tcp_priv.h" + +#include "lwip/def.h" +#include "lwip/memp.h" +#include "lwip/priv/tcpip_priv.h" + +#include "lwip/ip4_frag.h" +#include "lwip/etharp.h" +#include "lwip/dhcp.h" +#include "lwip/autoip.h" +#include "lwip/igmp.h" +#include "lwip/dns.h" +#include "lwip/nd6.h" +#include "lwip/ip6_frag.h" +#include "lwip/mld6.h" +#include "lwip/dhcp6.h" +#include "lwip/sys.h" +#include "lwip/pbuf.h" + +#if LWIP_DEBUG_TIMERNAMES +#define HANDLER(x) x, #x +#else /* LWIP_DEBUG_TIMERNAMES */ +#define HANDLER(x) x +#endif /* LWIP_DEBUG_TIMERNAMES */ + +#define LWIP_MAX_TIMEOUT 0x7fffffff + +/* Check if timer's expiry time is greater than time and care about u32_t wraparounds */ +#define TIME_LESS_THAN(t, compare_to) ( (((u32_t)((t)-(compare_to))) > LWIP_MAX_TIMEOUT) ? 1 : 0 ) + +/** This array contains all stack-internal cyclic timers. To get the number of + * timers, use LWIP_ARRAYSIZE() */ +const struct lwip_cyclic_timer lwip_cyclic_timers[] = { +#if LWIP_TCP + /* The TCP timer is a special case: it does not have to run always and + is triggered to start from TCP using tcp_timer_needed() */ + {TCP_TMR_INTERVAL, HANDLER(tcp_tmr)}, +#endif /* LWIP_TCP */ +#if LWIP_IPV4 +#if IP_REASSEMBLY + {IP_TMR_INTERVAL, HANDLER(ip_reass_tmr)}, +#endif /* IP_REASSEMBLY */ +#if LWIP_ARP + {ARP_TMR_INTERVAL, HANDLER(etharp_tmr)}, +#endif /* LWIP_ARP */ +#if LWIP_DHCP + {DHCP_COARSE_TIMER_MSECS, HANDLER(dhcp_coarse_tmr)}, + {DHCP_FINE_TIMER_MSECS, HANDLER(dhcp_fine_tmr)}, +#endif /* LWIP_DHCP */ +#if LWIP_AUTOIP + {AUTOIP_TMR_INTERVAL, HANDLER(autoip_tmr)}, +#endif /* LWIP_AUTOIP */ +#if LWIP_IGMP + {IGMP_TMR_INTERVAL, HANDLER(igmp_tmr)}, +#endif /* LWIP_IGMP */ +#endif /* LWIP_IPV4 */ +#if LWIP_DNS + {DNS_TMR_INTERVAL, HANDLER(dns_tmr)}, +#endif /* LWIP_DNS */ +#if LWIP_IPV6 + {ND6_TMR_INTERVAL, HANDLER(nd6_tmr)}, +#if LWIP_IPV6_REASS + {IP6_REASS_TMR_INTERVAL, HANDLER(ip6_reass_tmr)}, +#endif /* LWIP_IPV6_REASS */ +#if LWIP_IPV6_MLD + {MLD6_TMR_INTERVAL, HANDLER(mld6_tmr)}, +#endif /* LWIP_IPV6_MLD */ +#if LWIP_IPV6_DHCP6 + {DHCP6_TIMER_MSECS, HANDLER(dhcp6_tmr)}, +#endif /* LWIP_IPV6_DHCP6 */ +#endif /* LWIP_IPV6 */ +}; +const int lwip_num_cyclic_timers = LWIP_ARRAYSIZE(lwip_cyclic_timers); + +#if LWIP_TIMERS && !LWIP_TIMERS_CUSTOM + +/** The one and only timeout list */ +static struct sys_timeo *next_timeout; + +static u32_t current_timeout_due_time; + +#if LWIP_TESTMODE +struct sys_timeo** +sys_timeouts_get_next_timeout(void) +{ + return &next_timeout; +} +#endif + +#if LWIP_TCP +/** global variable that shows if the tcp timer is currently scheduled or not */ +static int tcpip_tcp_timer_active; + +/** + * Timer callback function that calls tcp_tmr() and reschedules itself. + * + * @param arg unused argument + */ +static void +tcpip_tcp_timer(void *arg) +{ + LWIP_UNUSED_ARG(arg); + + /* call TCP timer handler */ + tcp_tmr(); + /* timer still needed? */ + if (tcp_active_pcbs || tcp_tw_pcbs) { + /* restart timer */ + sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL); + } else { + /* disable timer */ + tcpip_tcp_timer_active = 0; + } +} + +/** + * Called from TCP_REG when registering a new PCB: + * the reason is to have the TCP timer only running when + * there are active (or time-wait) PCBs. + */ +void +tcp_timer_needed(void) +{ + LWIP_ASSERT_CORE_LOCKED(); + + /* timer is off but needed again? */ + if (!tcpip_tcp_timer_active && (tcp_active_pcbs || tcp_tw_pcbs)) { + /* enable and start timer */ + tcpip_tcp_timer_active = 1; + sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL); + } +} +#endif /* LWIP_TCP */ + +static void +#if LWIP_DEBUG_TIMERNAMES +sys_timeout_abs(u32_t abs_time, sys_timeout_handler handler, void *arg, const char *handler_name) +#else /* LWIP_DEBUG_TIMERNAMES */ +sys_timeout_abs(u32_t abs_time, sys_timeout_handler handler, void *arg) +#endif +{ + struct sys_timeo *timeout, *t; + + timeout = (struct sys_timeo *)memp_malloc(MEMP_SYS_TIMEOUT); + if (timeout == NULL) { + LWIP_ASSERT("sys_timeout: timeout != NULL, pool MEMP_SYS_TIMEOUT is empty", timeout != NULL); + return; + } + + timeout->next = NULL; + timeout->h = handler; + timeout->arg = arg; + timeout->time = abs_time; + +#if LWIP_DEBUG_TIMERNAMES + timeout->handler_name = handler_name; + LWIP_DEBUGF(TIMERS_DEBUG, ("sys_timeout: %p abs_time=%"U32_F" handler=%s arg=%p\n", + (void *)timeout, abs_time, handler_name, (void *)arg)); +#endif /* LWIP_DEBUG_TIMERNAMES */ + + if (next_timeout == NULL) { + next_timeout = timeout; + return; + } + if (TIME_LESS_THAN(timeout->time, next_timeout->time)) { + timeout->next = next_timeout; + next_timeout = timeout; + } else { + for (t = next_timeout; t != NULL; t = t->next) { + if ((t->next == NULL) || TIME_LESS_THAN(timeout->time, t->next->time)) { + timeout->next = t->next; + t->next = timeout; + break; + } + } + } +} + +/** + * Timer callback function that calls cyclic->handler() and reschedules itself. + * + * @param arg unused argument + */ +#if !LWIP_TESTMODE +static +#endif +void +lwip_cyclic_timer(void *arg) +{ + u32_t now; + u32_t next_timeout_time; + const struct lwip_cyclic_timer *cyclic = (const struct lwip_cyclic_timer *)arg; + +#if LWIP_DEBUG_TIMERNAMES + LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: %s()\n", cyclic->handler_name)); +#endif + cyclic->handler(); + + now = sys_now(); + next_timeout_time = (u32_t)(current_timeout_due_time + cyclic->interval_ms); /* overflow handled by TIME_LESS_THAN macro */ + if (TIME_LESS_THAN(next_timeout_time, now)) { + /* timer would immediately expire again -> "overload" -> restart without any correction */ +#if LWIP_DEBUG_TIMERNAMES + sys_timeout_abs((u32_t)(now + cyclic->interval_ms), lwip_cyclic_timer, arg, cyclic->handler_name); +#else + sys_timeout_abs((u32_t)(now + cyclic->interval_ms), lwip_cyclic_timer, arg); +#endif + + } else { + /* correct cyclic interval with handler execution delay and sys_check_timeouts jitter */ +#if LWIP_DEBUG_TIMERNAMES + sys_timeout_abs(next_timeout_time, lwip_cyclic_timer, arg, cyclic->handler_name); +#else + sys_timeout_abs(next_timeout_time, lwip_cyclic_timer, arg); +#endif + } +} + +/** Initialize this module */ +void sys_timeouts_init(void) +{ + size_t i; + /* tcp_tmr() at index 0 is started on demand */ + for (i = (LWIP_TCP ? 1 : 0); i < LWIP_ARRAYSIZE(lwip_cyclic_timers); i++) { + /* we have to cast via size_t to get rid of const warning + (this is OK as cyclic_timer() casts back to const* */ + sys_timeout(lwip_cyclic_timers[i].interval_ms, lwip_cyclic_timer, LWIP_CONST_CAST(void *, &lwip_cyclic_timers[i])); + } +} + +/** + * Create a one-shot timer (aka timeout). Timeouts are processed in the + * following cases: + * - while waiting for a message using sys_timeouts_mbox_fetch() + * - by calling sys_check_timeouts() (NO_SYS==1 only) + * + * @param msecs time in milliseconds after that the timer should expire + * @param handler callback function to call when msecs have elapsed + * @param arg argument to pass to the callback function + */ +#if LWIP_DEBUG_TIMERNAMES +void +sys_timeout_debug(u32_t msecs, sys_timeout_handler handler, void *arg, const char *handler_name) +#else /* LWIP_DEBUG_TIMERNAMES */ +void +sys_timeout(u32_t msecs, sys_timeout_handler handler, void *arg) +#endif /* LWIP_DEBUG_TIMERNAMES */ +{ + u32_t next_timeout_time; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ASSERT("Timeout time too long, max is LWIP_UINT32_MAX/4 msecs", msecs <= (LWIP_UINT32_MAX / 4)); + + next_timeout_time = (u32_t)(sys_now() + msecs); /* overflow handled by TIME_LESS_THAN macro */ + +#if LWIP_DEBUG_TIMERNAMES + sys_timeout_abs(next_timeout_time, handler, arg, handler_name); +#else + sys_timeout_abs(next_timeout_time, handler, arg); +#endif +} + +/** + * Go through timeout list (for this task only) and remove the first matching + * entry (subsequent entries remain untouched), even though the timeout has not + * triggered yet. + * + * @param handler callback function that would be called by the timeout + * @param arg callback argument that would be passed to handler +*/ +void +sys_untimeout(sys_timeout_handler handler, void *arg) +{ + struct sys_timeo *prev_t, *t; + + LWIP_ASSERT_CORE_LOCKED(); + + if (next_timeout == NULL) { + return; + } + + for (t = next_timeout, prev_t = NULL; t != NULL; prev_t = t, t = t->next) { + if ((t->h == handler) && (t->arg == arg)) { + /* We have a match */ + /* Unlink from previous in list */ + if (prev_t == NULL) { + next_timeout = t->next; + } else { + prev_t->next = t->next; + } + memp_free(MEMP_SYS_TIMEOUT, t); + return; + } + } + return; +} + +/** + * @ingroup lwip_nosys + * Handle timeouts for NO_SYS==1 (i.e. without using + * tcpip_thread/sys_timeouts_mbox_fetch(). Uses sys_now() to call timeout + * handler functions when timeouts expire. + * + * Must be called periodically from your main loop. + */ +void +sys_check_timeouts(void) +{ + u32_t now; + + LWIP_ASSERT_CORE_LOCKED(); + + /* Process only timers expired at the start of the function. */ + now = sys_now(); + + do { + struct sys_timeo *tmptimeout; + sys_timeout_handler handler; + void *arg; + + PBUF_CHECK_FREE_OOSEQ(); + + tmptimeout = next_timeout; + if (tmptimeout == NULL) { + return; + } + + if (TIME_LESS_THAN(now, tmptimeout->time)) { + return; + } + + /* Timeout has expired */ + next_timeout = tmptimeout->next; + handler = tmptimeout->h; + arg = tmptimeout->arg; + current_timeout_due_time = tmptimeout->time; +#if LWIP_DEBUG_TIMERNAMES + if (handler != NULL) { + LWIP_DEBUGF(TIMERS_DEBUG, ("sct calling h=%s t=%"U32_F" arg=%p\n", + tmptimeout->handler_name, sys_now() - tmptimeout->time, arg)); + } +#endif /* LWIP_DEBUG_TIMERNAMES */ + memp_free(MEMP_SYS_TIMEOUT, tmptimeout); + if (handler != NULL) { + handler(arg); + } + LWIP_TCPIP_THREAD_ALIVE(); + + /* Repeat until all expired timers have been called */ + } while (1); +} + +/** Rebase the timeout times to the current time. + * This is necessary if sys_check_timeouts() hasn't been called for a long + * time (e.g. while saving energy) to prevent all timer functions of that + * period being called. + */ +void +sys_restart_timeouts(void) +{ + u32_t now; + u32_t base; + struct sys_timeo *t; + + if (next_timeout == NULL) { + return; + } + + now = sys_now(); + base = next_timeout->time; + + for (t = next_timeout; t != NULL; t = t->next) { + t->time = (t->time - base) + now; + } +} + +/** Return the time left before the next timeout is due. If no timeouts are + * enqueued, returns 0xffffffff + */ +u32_t +sys_timeouts_sleeptime(void) +{ + u32_t now; + + LWIP_ASSERT_CORE_LOCKED(); + + if (next_timeout == NULL) { + return SYS_TIMEOUTS_SLEEPTIME_INFINITE; + } + now = sys_now(); + if (TIME_LESS_THAN(next_timeout->time, now)) { + return 0; + } else { + u32_t ret = (u32_t)(next_timeout->time - now); + LWIP_ASSERT("invalid sleeptime", ret <= LWIP_MAX_TIMEOUT); + return ret; + } +} + +#else /* LWIP_TIMERS && !LWIP_TIMERS_CUSTOM */ +/* Satisfy the TCP code which calls this function */ +void +tcp_timer_needed(void) +{ +} +#endif /* LWIP_TIMERS && !LWIP_TIMERS_CUSTOM */ diff --git a/Other/tun2socks/core/c/core/udp.c b/Other/tun2socks/core/c/core/udp.c new file mode 100644 index 0000000..3a45862 --- /dev/null +++ b/Other/tun2socks/core/c/core/udp.c @@ -0,0 +1,1424 @@ +/** + * @file + * User Datagram Protocol module\n + * The code for the User Datagram Protocol UDP & UDPLite (RFC 3828).\n + * See also @ref udp_raw + * + * @defgroup udp_raw UDP + * @ingroup callbackstyle_api + * User Datagram Protocol module\n + * @see @ref api + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +/* @todo Check the use of '(struct udp_pcb).chksum_len_rx'! + */ + +#include "lwip/opt.h" + +#if LWIP_UDP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/udp.h" +#include "lwip/def.h" +#include "lwip/memp.h" +#include "lwip/inet_chksum.h" +#include "lwip/ip_addr.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/netif.h" +#include "lwip/icmp.h" +#include "lwip/icmp6.h" +#include "lwip/stats.h" +#include "lwip/snmp.h" +#include "lwip/dhcp.h" + +#include + +#ifndef UDP_LOCAL_PORT_RANGE_START +/* From http://www.iana.org/assignments/port-numbers: + "The Dynamic and/or Private Ports are those from 49152 through 65535" */ +#define UDP_LOCAL_PORT_RANGE_START 0xc000 +#define UDP_LOCAL_PORT_RANGE_END 0xffff +#define UDP_ENSURE_LOCAL_PORT_RANGE(port) ((u16_t)(((port) & (u16_t)~UDP_LOCAL_PORT_RANGE_START) + UDP_LOCAL_PORT_RANGE_START)) +#endif + +/* last local UDP port */ +static u16_t udp_port = UDP_LOCAL_PORT_RANGE_START; + +/* The list of UDP PCBs */ +/* exported in udp.h (was static) */ +struct udp_pcb *udp_pcbs; + +/** + * Initialize this module. + */ +void +udp_init(void) +{ +#ifdef LWIP_RAND + udp_port = UDP_ENSURE_LOCAL_PORT_RANGE(LWIP_RAND()); +#endif /* LWIP_RAND */ +} + +/** + * Allocate a new local UDP port. + * + * @return a new (free) local UDP port number + */ +static u16_t +udp_new_port(void) +{ + u16_t n = 0; + struct udp_pcb *pcb; + +again: + if (udp_port++ == UDP_LOCAL_PORT_RANGE_END) { + udp_port = UDP_LOCAL_PORT_RANGE_START; + } + /* Check all PCBs. */ + for (pcb = udp_pcbs; pcb != NULL; pcb = pcb->next) { + if (pcb->local_port == udp_port) { + if (++n > (UDP_LOCAL_PORT_RANGE_END - UDP_LOCAL_PORT_RANGE_START)) { + return 0; + } + goto again; + } + } + return udp_port; +} + +/** Common code to see if the current input packet matches the pcb + * (current input packet is accessed via ip(4/6)_current_* macros) + * + * @param pcb pcb to check + * @param inp network interface on which the datagram was received (only used for IPv4) + * @param broadcast 1 if his is an IPv4 broadcast (global or subnet-only), 0 otherwise (only used for IPv4) + * @return 1 on match, 0 otherwise + */ +static u8_t +udp_input_local_match(struct udp_pcb *pcb, struct netif *inp, u8_t broadcast) +{ + LWIP_UNUSED_ARG(inp); /* in IPv6 only case */ + LWIP_UNUSED_ARG(broadcast); /* in IPv6 only case */ + + LWIP_ASSERT("udp_input_local_match: invalid pcb", pcb != NULL); + LWIP_ASSERT("udp_input_local_match: invalid netif", inp != NULL); + + /* check if PCB is bound to specific netif */ + if ((pcb->netif_idx != NETIF_NO_INDEX) && + (pcb->netif_idx != netif_get_index(ip_data.current_input_netif))) { + return 0; + } + + /* Dual-stack: PCBs listening to any IP type also listen to any IP address */ + if (IP_IS_ANY_TYPE_VAL(pcb->local_ip)) { +#if LWIP_IPV4 && IP_SOF_BROADCAST_RECV + if ((broadcast != 0) && !ip_get_option(pcb, SOF_BROADCAST)) { + return 0; + } +#endif /* LWIP_IPV4 && IP_SOF_BROADCAST_RECV */ + return 1; + } + + /* Only need to check PCB if incoming IP version matches PCB IP version */ + if (IP_ADDR_PCB_VERSION_MATCH_EXACT(pcb, ip_current_dest_addr())) { +#if LWIP_IPV4 + /* Special case: IPv4 broadcast: all or broadcasts in my subnet + * Note: broadcast variable can only be 1 if it is an IPv4 broadcast */ + if (broadcast != 0) { +#if IP_SOF_BROADCAST_RECV + if (ip_get_option(pcb, SOF_BROADCAST)) +#endif /* IP_SOF_BROADCAST_RECV */ + { + if (ip4_addr_isany(ip_2_ip4(&pcb->local_ip)) || + ((ip4_current_dest_addr()->addr == IPADDR_BROADCAST)) || + ip4_addr_netcmp(ip_2_ip4(&pcb->local_ip), ip4_current_dest_addr(), netif_ip4_netmask(inp))) { + return 1; + } + } + } else +#endif /* LWIP_IPV4 */ + /* Handle IPv4 and IPv6: all or exact match */ + if (ip_addr_isany(&pcb->local_ip) || ip_addr_cmp(&pcb->local_ip, ip_current_dest_addr())) { + return 1; + } + } + + return 0; +} + +/** + * Process an incoming UDP datagram. + * + * Given an incoming UDP datagram (as a chain of pbufs) this function + * finds a corresponding UDP PCB and hands over the pbuf to the pcbs + * recv function. If no pcb is found or the datagram is incorrect, the + * pbuf is freed. + * + * @param p pbuf to be demultiplexed to a UDP PCB (p->payload pointing to the UDP header) + * @param inp network interface on which the datagram was received. + * + */ +void +udp_input(struct pbuf *p, struct netif *inp) +{ + struct udp_hdr *udphdr; + struct udp_pcb *pcb, *prev; + struct udp_pcb *uncon_pcb; + u16_t src, dest; + u8_t broadcast; + u8_t for_us = 0; + + LWIP_UNUSED_ARG(inp); + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ASSERT("udp_input: invalid pbuf", p != NULL); + LWIP_ASSERT("udp_input: invalid netif", inp != NULL); + + PERF_START; + + UDP_STATS_INC(udp.recv); + + /* Check minimum length (UDP header) */ + if (p->len < UDP_HLEN) { + /* drop short packets */ + LWIP_DEBUGF(UDP_DEBUG, + ("udp_input: short UDP datagram (%"U16_F" bytes) discarded\n", p->tot_len)); + UDP_STATS_INC(udp.lenerr); + UDP_STATS_INC(udp.drop); + MIB2_STATS_INC(mib2.udpinerrors); + pbuf_free(p); + goto end; + } + + udphdr = (struct udp_hdr *)p->payload; + + /* is broadcast packet ? */ + broadcast = ip_addr_isbroadcast(ip_current_dest_addr(), ip_current_netif()); + + LWIP_DEBUGF(UDP_DEBUG, ("udp_input: received datagram of length %"U16_F"\n", p->tot_len)); + + /* convert src and dest ports to host byte order */ + src = lwip_ntohs(udphdr->src); + dest = lwip_ntohs(udphdr->dest); + + udp_debug_print(udphdr); + + /* print the UDP source and destination */ + LWIP_DEBUGF(UDP_DEBUG, ("udp (")); + ip_addr_debug_print_val(UDP_DEBUG, *ip_current_dest_addr()); + LWIP_DEBUGF(UDP_DEBUG, (", %"U16_F") <-- (", lwip_ntohs(udphdr->dest))); + ip_addr_debug_print_val(UDP_DEBUG, *ip_current_src_addr()); + LWIP_DEBUGF(UDP_DEBUG, (", %"U16_F")\n", lwip_ntohs(udphdr->src))); + + pcb = NULL; + prev = NULL; + uncon_pcb = NULL; + /* Iterate through the UDP pcb list for a matching pcb. + * 'Perfect match' pcbs (connected to the remote port & ip address) are + * preferred. If no perfect match is found, the first unconnected pcb that + * matches the local port and ip address gets the datagram. */ + for (pcb = udp_pcbs; pcb != NULL; pcb = pcb->next) { + +#if TUN2SOCKS + // go-tun2socks logic + // take the first one, library users are responsible for creating that pcb + break; +#endif /* TUN2SOCKS */ + + /* print the PCB local and remote address */ + LWIP_DEBUGF(UDP_DEBUG, ("pcb (")); + ip_addr_debug_print_val(UDP_DEBUG, pcb->local_ip); + LWIP_DEBUGF(UDP_DEBUG, (", %"U16_F") <-- (", pcb->local_port)); + ip_addr_debug_print_val(UDP_DEBUG, pcb->remote_ip); + LWIP_DEBUGF(UDP_DEBUG, (", %"U16_F")\n", pcb->remote_port)); + + /* compare PCB local addr+port to UDP destination addr+port */ + if ((pcb->local_port == dest) && + (udp_input_local_match(pcb, inp, broadcast) != 0)) { + if ((pcb->flags & UDP_FLAGS_CONNECTED) == 0) { + if (uncon_pcb == NULL) { + /* the first unconnected matching PCB */ + uncon_pcb = pcb; +#if LWIP_IPV4 + } else if (broadcast && ip4_current_dest_addr()->addr == IPADDR_BROADCAST) { + /* global broadcast address (only valid for IPv4; match was checked before) */ + if (!IP_IS_V4_VAL(uncon_pcb->local_ip) || !ip4_addr_cmp(ip_2_ip4(&uncon_pcb->local_ip), netif_ip4_addr(inp))) { + /* uncon_pcb does not match the input netif, check this pcb */ + if (IP_IS_V4_VAL(pcb->local_ip) && ip4_addr_cmp(ip_2_ip4(&pcb->local_ip), netif_ip4_addr(inp))) { + /* better match */ + uncon_pcb = pcb; + } + } +#endif /* LWIP_IPV4 */ + } +#if SO_REUSE + else if (!ip_addr_isany(&pcb->local_ip)) { + /* prefer specific IPs over catch-all */ + uncon_pcb = pcb; + } +#endif /* SO_REUSE */ + } + + /* compare PCB remote addr+port to UDP source addr+port */ + if ((pcb->remote_port == src) && + (ip_addr_isany_val(pcb->remote_ip) || + ip_addr_cmp(&pcb->remote_ip, ip_current_src_addr()))) { + /* the first fully matching PCB */ + if (prev != NULL) { + /* move the pcb to the front of udp_pcbs so that is + found faster next time */ + prev->next = pcb->next; + pcb->next = udp_pcbs; + udp_pcbs = pcb; + } else { + UDP_STATS_INC(udp.cachehit); + } + break; + } + } + + prev = pcb; + } + /* no fully matching pcb found? then look for an unconnected pcb */ + if (pcb == NULL) { + pcb = uncon_pcb; + } + + /* Check checksum if this is a match or if it was directed at us. */ + if (pcb != NULL) { + for_us = 1; + } else { +#if LWIP_IPV6 + if (ip_current_is_v6()) { + for_us = netif_get_ip6_addr_match(inp, ip6_current_dest_addr()) >= 0; + } +#endif /* LWIP_IPV6 */ +#if LWIP_IPV4 + if (!ip_current_is_v6()) { + for_us = ip4_addr_cmp(netif_ip4_addr(inp), ip4_current_dest_addr()); + } +#endif /* LWIP_IPV4 */ + } + + if (for_us) { + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE, ("udp_input: calculating checksum\n")); +#if CHECKSUM_CHECK_UDP + IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_CHECK_UDP) { +#if LWIP_UDPLITE + if (ip_current_header_proto() == IP_PROTO_UDPLITE) { + /* Do the UDP Lite checksum */ + u16_t chklen = lwip_ntohs(udphdr->len); + if (chklen < sizeof(struct udp_hdr)) { + if (chklen == 0) { + /* For UDP-Lite, checksum length of 0 means checksum + over the complete packet (See RFC 3828 chap. 3.1) */ + chklen = p->tot_len; + } else { + /* At least the UDP-Lite header must be covered by the + checksum! (Again, see RFC 3828 chap. 3.1) */ + goto chkerr; + } + } + if (ip_chksum_pseudo_partial(p, IP_PROTO_UDPLITE, + p->tot_len, chklen, + ip_current_src_addr(), ip_current_dest_addr()) != 0) { + goto chkerr; + } + } else +#endif /* LWIP_UDPLITE */ + { + if (udphdr->chksum != 0) { + if (ip_chksum_pseudo(p, IP_PROTO_UDP, p->tot_len, + ip_current_src_addr(), + ip_current_dest_addr()) != 0) { + goto chkerr; + } + } + } + } +#endif /* CHECKSUM_CHECK_UDP */ + if (pbuf_remove_header(p, UDP_HLEN)) { + /* Can we cope with this failing? Just assert for now */ + LWIP_ASSERT("pbuf_remove_header failed\n", 0); + UDP_STATS_INC(udp.drop); + MIB2_STATS_INC(mib2.udpinerrors); + pbuf_free(p); + goto end; + } + + if (pcb != NULL) { + MIB2_STATS_INC(mib2.udpindatagrams); +#if SO_REUSE && SO_REUSE_RXTOALL + if (ip_get_option(pcb, SOF_REUSEADDR) && + (broadcast || ip_addr_ismulticast(ip_current_dest_addr()))) { + /* pass broadcast- or multicast packets to all multicast pcbs + if SOF_REUSEADDR is set on the first match */ + struct udp_pcb *mpcb; + for (mpcb = udp_pcbs; mpcb != NULL; mpcb = mpcb->next) { + if (mpcb != pcb) { + /* compare PCB local addr+port to UDP destination addr+port */ + if ((mpcb->local_port == dest) && + (udp_input_local_match(mpcb, inp, broadcast) != 0)) { + /* pass a copy of the packet to all local matches */ + if (mpcb->recv != NULL) { + struct pbuf *q; + q = pbuf_clone(PBUF_RAW, PBUF_POOL, p); + if (q != NULL) { + mpcb->recv(mpcb->recv_arg, mpcb, q, ip_current_src_addr(), src); + } + } + } + } + } + } +#endif /* SO_REUSE && SO_REUSE_RXTOALL */ + /* callback */ + if (pcb->recv != NULL) { +#if TUN2SOCKS + // go-tun2socks logic + // Since we are accepting all udp datagrams using the default netif and + // and the default pcb, and the address of the default pcb need not to match + // the packet's dest address in tun2socks, our application will never + // know what are the original dest address and port if we don't pass them + // to the recv callback. + pcb->recv(pcb->recv_arg, pcb, p, ip_current_src_addr(), src, ip_current_dest_addr(), dest); +#else + /* now the recv function is responsible for freeing p */ + pcb->recv(pcb->recv_arg, pcb, p, ip_current_src_addr(), src); +#endif /* TUN2SOCKS */ + } else { + /* no recv function registered? then we have to free the pbuf! */ + pbuf_free(p); + goto end; + } + } else { + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE, ("udp_input: not for us.\n")); + +#if LWIP_ICMP || LWIP_ICMP6 + /* No match was found, send ICMP destination port unreachable unless + destination address was broadcast/multicast. */ + if (!broadcast && !ip_addr_ismulticast(ip_current_dest_addr())) { + /* move payload pointer back to ip header */ + pbuf_header_force(p, (s16_t)(ip_current_header_tot_len() + UDP_HLEN)); + icmp_port_unreach(ip_current_is_v6(), p); + } +#endif /* LWIP_ICMP || LWIP_ICMP6 */ + UDP_STATS_INC(udp.proterr); + UDP_STATS_INC(udp.drop); + MIB2_STATS_INC(mib2.udpnoports); + pbuf_free(p); + } + } else { + pbuf_free(p); + } +end: + PERF_STOP("udp_input"); + return; +#if CHECKSUM_CHECK_UDP +chkerr: + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("udp_input: UDP (or UDP Lite) datagram discarded due to failing checksum\n")); + UDP_STATS_INC(udp.chkerr); + UDP_STATS_INC(udp.drop); + MIB2_STATS_INC(mib2.udpinerrors); + pbuf_free(p); + PERF_STOP("udp_input"); +#endif /* CHECKSUM_CHECK_UDP */ +} + +/** + * @ingroup udp_raw + * Sends the pbuf p using UDP. The pbuf is not deallocated. + * + * + * @param pcb UDP PCB used to send the data. + * @param p chain of pbuf's to be sent. + * + * The datagram will be sent to the current remote_ip & remote_port + * stored in pcb. If the pcb is not bound to a port, it will + * automatically be bound to a random port. + * + * @return lwIP error code. + * - ERR_OK. Successful. No error occurred. + * - ERR_MEM. Out of memory. + * - ERR_RTE. Could not find route to destination address. + * - ERR_VAL. No PCB or PCB is dual-stack + * - More errors could be returned by lower protocol layers. + * + * @see udp_disconnect() udp_sendto() + */ +err_t +udp_send(struct udp_pcb *pcb, struct pbuf *p) +{ + LWIP_ERROR("udp_send: invalid pcb", pcb != NULL, return ERR_ARG); + LWIP_ERROR("udp_send: invalid pbuf", p != NULL, return ERR_ARG); + + if (IP_IS_ANY_TYPE_VAL(pcb->remote_ip)) { + return ERR_VAL; + } + +#if TUN2SOCKS + /* tun2socks should never use udp_send(), use udp_sendto() directly instead */ + return ERR_OK; +#else + /* send to the packet using remote ip and port stored in the pcb */ + return udp_sendto(pcb, p, &pcb->remote_ip, pcb->remote_port); +#endif /* TUN2SOCKS */ +} + +#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP +/** @ingroup udp_raw + * Same as udp_send() but with checksum + */ +err_t +udp_send_chksum(struct udp_pcb *pcb, struct pbuf *p, + u8_t have_chksum, u16_t chksum) +{ + LWIP_ERROR("udp_send_chksum: invalid pcb", pcb != NULL, return ERR_ARG); + LWIP_ERROR("udp_send_chksum: invalid pbuf", p != NULL, return ERR_ARG); + + if (IP_IS_ANY_TYPE_VAL(pcb->remote_ip)) { + return ERR_VAL; + } + +#if TUN2SOCKS + /* tun2socks should never use udp_send(), use udp_sendto_chksum() directly instead */ + return ERR_OK; +#else + /* send to the packet using remote ip and port stored in the pcb */ + return udp_sendto_chksum(pcb, p, &pcb->remote_ip, pcb->remote_port, + have_chksum, chksum); +#endif /* TUN2SOCKS */ +} +#endif /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */ + +/** + * @ingroup udp_raw + * Send data to a specified address using UDP. + * + * @param pcb UDP PCB used to send the data. + * @param p chain of pbuf's to be sent. + * @param dst_ip Destination IP address. + * @param dst_port Destination UDP port. + * + * dst_ip & dst_port are expected to be in the same byte order as in the pcb. + * + * If the PCB already has a remote address association, it will + * be restored after the data is sent. + * + * @return lwIP error code (@see udp_send for possible error codes) + * + * @see udp_disconnect() udp_send() + */ +#if TUN2SOCKS +err_t +udp_sendto(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, const ip_addr_t *src_ip, u16_t src_port) +{ +#else +err_t +udp_sendto(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port) +{ +#endif /* TUN2SOCKS */ +#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP +#if TUN2SOCKS + return udp_sendto_chksum(pcb, p, dst_ip, dst_port, 0, 0, src_ip, src_port); +} + +/** @ingroup udp_raw + * Same as udp_sendto(), but with checksum */ +err_t +udp_sendto_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip, + u16_t dst_port, u8_t have_chksum, u16_t chksum, const ip_addr_t *src_ip, u16_t src_port) +{ +#else + return udp_sendto_chksum(pcb, p, dst_ip, dst_port, 0, 0); +} + +/** @ingroup udp_raw + * Same as udp_sendto(), but with checksum */ +err_t +udp_sendto_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip, + u16_t dst_port, u8_t have_chksum, u16_t chksum) +{ +#endif /* TUN2SOCKS */ +#endif /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */ + struct netif *netif; + + LWIP_ERROR("udp_sendto: invalid pcb", pcb != NULL, return ERR_ARG); + LWIP_ERROR("udp_sendto: invalid pbuf", p != NULL, return ERR_ARG); + LWIP_ERROR("udp_sendto: invalid dst_ip", dst_ip != NULL, return ERR_ARG); + + if (!IP_ADDR_PCB_VERSION_MATCH(pcb, dst_ip)) { + return ERR_VAL; + } + + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE, ("udp_send\n")); + + if (pcb->netif_idx != NETIF_NO_INDEX) { + netif = netif_get_by_index(pcb->netif_idx); + } else { +#if LWIP_MULTICAST_TX_OPTIONS + netif = NULL; + if (ip_addr_ismulticast(dst_ip)) { + /* For IPv6, the interface to use for packets with a multicast destination + * is specified using an interface index. The same approach may be used for + * IPv4 as well, in which case it overrides the IPv4 multicast override + * address below. Here we have to look up the netif by going through the + * list, but by doing so we skip a route lookup. If the interface index has + * gone stale, we fall through and do the regular route lookup after all. */ + if (pcb->mcast_ifindex != NETIF_NO_INDEX) { + netif = netif_get_by_index(pcb->mcast_ifindex); + } +#if LWIP_IPV4 + else +#if LWIP_IPV6 + if (IP_IS_V4(dst_ip)) +#endif /* LWIP_IPV6 */ + { + /* IPv4 does not use source-based routing by default, so we use an + administratively selected interface for multicast by default. + However, this can be overridden by setting an interface address + in pcb->mcast_ip4 that is used for routing. If this routing lookup + fails, we try regular routing as though no override was set. */ + if (!ip4_addr_isany_val(pcb->mcast_ip4) && + !ip4_addr_cmp(&pcb->mcast_ip4, IP4_ADDR_BROADCAST)) { + netif = ip4_route_src(ip_2_ip4(&pcb->local_ip), &pcb->mcast_ip4); + } + } +#endif /* LWIP_IPV4 */ + } + + if (netif == NULL) +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + { + /* find the outgoing network interface for this packet */ + netif = ip_route(&pcb->local_ip, dst_ip); + } + } + + /* no outgoing network interface could be found? */ + if (netif == NULL) { + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("udp_send: No route to ")); + ip_addr_debug_print(UDP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, dst_ip); + LWIP_DEBUGF(UDP_DEBUG, ("\n")); + UDP_STATS_INC(udp.rterr); + return ERR_RTE; + } +#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP +#if TUN2SOCKS + return udp_sendto_if_chksum(pcb, p, dst_ip, dst_port, netif, have_chksum, chksum, src_ip, src_port); +#else + return udp_sendto_if_chksum(pcb, p, dst_ip, dst_port, netif, have_chksum, chksum); +#endif /* TUN2SOCKS */ +#else /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */ +#if TUN2SOCKS + return udp_sendto_if(pcb, p, dst_ip, dst_port, netif, src_ip, src_port); +#else + return udp_sendto_if(pcb, p, dst_ip, dst_port, netif); +#endif /* TUN2SOCKS */ +#endif /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */ +} + +/** + * @ingroup udp_raw + * Send data to a specified address using UDP. + * The netif used for sending can be specified. + * + * This function exists mainly for DHCP, to be able to send UDP packets + * on a netif that is still down. + * + * @param pcb UDP PCB used to send the data. + * @param p chain of pbuf's to be sent. + * @param dst_ip Destination IP address. + * @param dst_port Destination UDP port. + * @param netif the netif used for sending. + * + * dst_ip & dst_port are expected to be in the same byte order as in the pcb. + * + * @return lwIP error code (@see udp_send for possible error codes) + * + * @see udp_disconnect() udp_send() + */ +#if TUN2SOCKS +err_t +udp_sendto_if(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, struct netif *netif, const ip_addr_t *src_ip, u16_t src_port) +{ +#else +err_t +udp_sendto_if(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, struct netif *netif) +{ +#endif /* TUN2SOCKS */ +#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP +#if TUN2SOCKS + return udp_sendto_if_chksum(pcb, p, dst_ip, dst_port, netif, 0, 0, src_ip, src_port); +} + +/** Same as udp_sendto_if(), but with checksum */ +err_t +udp_sendto_if_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip, + u16_t dst_port, struct netif *netif, u8_t have_chksum, + u16_t chksum, const ip_addr_t *src_ip, u16_t src_port) +{ +#else + return udp_sendto_if_chksum(pcb, p, dst_ip, dst_port, netif, 0, 0); +} + +/** Same as udp_sendto_if(), but with checksum */ +err_t +udp_sendto_if_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip, + u16_t dst_port, struct netif *netif, u8_t have_chksum, + u16_t chksum) +{ +#endif /* TUN2SOCKS */ +#endif /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */ +#if TUN2SOCKS +#else + const ip_addr_t *src_ip; +#endif /* TUN2SOCKS */ + + LWIP_ERROR("udp_sendto_if: invalid pcb", pcb != NULL, return ERR_ARG); + LWIP_ERROR("udp_sendto_if: invalid pbuf", p != NULL, return ERR_ARG); + LWIP_ERROR("udp_sendto_if: invalid dst_ip", dst_ip != NULL, return ERR_ARG); + LWIP_ERROR("udp_sendto_if: invalid netif", netif != NULL, return ERR_ARG); + + if (!IP_ADDR_PCB_VERSION_MATCH(pcb, dst_ip)) { + return ERR_VAL; + } + +#if TUN2SOCKS +#else + /* PCB local address is IP_ANY_ADDR or multicast? */ +#if LWIP_IPV6 + if (IP_IS_V6(dst_ip)) { + if (ip6_addr_isany(ip_2_ip6(&pcb->local_ip)) || + ip6_addr_ismulticast(ip_2_ip6(&pcb->local_ip))) { + src_ip = ip6_select_source_address(netif, ip_2_ip6(dst_ip)); + if (src_ip == NULL) { + /* No suitable source address was found. */ + return ERR_RTE; + } + } else { + /* use UDP PCB local IPv6 address as source address, if still valid. */ + if (netif_get_ip6_addr_match(netif, ip_2_ip6(&pcb->local_ip)) < 0) { + /* Address isn't valid anymore. */ + return ERR_RTE; + } + src_ip = &pcb->local_ip; + } + } +#endif /* LWIP_IPV6 */ +#if LWIP_IPV4 && LWIP_IPV6 + else +#endif /* LWIP_IPV4 && LWIP_IPV6 */ +#if LWIP_IPV4 + if (ip4_addr_isany(ip_2_ip4(&pcb->local_ip)) || + ip4_addr_ismulticast(ip_2_ip4(&pcb->local_ip))) { + /* if the local_ip is any or multicast + * use the outgoing network interface IP address as source address */ + src_ip = netif_ip_addr4(netif); + } else { + /* check if UDP PCB local IP address is correct + * this could be an old address if netif->ip_addr has changed */ + if (!ip4_addr_cmp(ip_2_ip4(&(pcb->local_ip)), netif_ip4_addr(netif))) { + /* local_ip doesn't match, drop the packet */ + return ERR_RTE; + } + /* use UDP PCB local IP address as source address */ + src_ip = &pcb->local_ip; + } +#endif /* LWIP_IPV4 */ +#endif /* TUN2SOCKS */ +#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP +#if TUN2SOCKS + return udp_sendto_if_src_chksum(pcb, p, dst_ip, dst_port, netif, have_chksum, chksum, src_ip, src_port); +#else + return udp_sendto_if_src_chksum(pcb, p, dst_ip, dst_port, netif, have_chksum, chksum, src_ip); +#endif /* TUN2SOCKS */ +#else /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */ +#if TUN2SOCKS + return udp_sendto_if_src(pcb, p, dst_ip, dst_port, netif, src_ip, src_port); +#else + return udp_sendto_if_src(pcb, p, dst_ip, dst_port, netif, src_ip); +#endif /* TUN2SOCKS */ +#endif /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */ +} + +/** @ingroup udp_raw + * Same as @ref udp_sendto_if, but with source address */ +#if TUN2SOCKS +err_t +udp_sendto_if_src(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, struct netif *netif, const ip_addr_t *src_ip, u16_t src_port) +{ +#else +err_t +udp_sendto_if_src(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, struct netif *netif, const ip_addr_t *src_ip) +{ +#endif /* TUN2SOCKS */ +#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP +#if TUN2SOCKS + return udp_sendto_if_src_chksum(pcb, p, dst_ip, dst_port, netif, 0, 0, src_ip, src_port); +} + +/** Same as udp_sendto_if_src(), but with checksum */ +err_t +udp_sendto_if_src_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip, + u16_t dst_port, struct netif *netif, u8_t have_chksum, + u16_t chksum, const ip_addr_t *src_ip, u16_t src_port) +{ +#else + return udp_sendto_if_src_chksum(pcb, p, dst_ip, dst_port, netif, 0, 0, src_ip); +} + +/** Same as udp_sendto_if_src(), but with checksum */ +err_t +udp_sendto_if_src_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip, + u16_t dst_port, struct netif *netif, u8_t have_chksum, + u16_t chksum, const ip_addr_t *src_ip) +{ +#endif /* TUN2SOCKS */ +#endif /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */ + struct udp_hdr *udphdr; + err_t err; + struct pbuf *q; /* q will be sent down the stack */ + u8_t ip_proto; + u8_t ttl; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("udp_sendto_if_src: invalid pcb", pcb != NULL, return ERR_ARG); + LWIP_ERROR("udp_sendto_if_src: invalid pbuf", p != NULL, return ERR_ARG); + LWIP_ERROR("udp_sendto_if_src: invalid dst_ip", dst_ip != NULL, return ERR_ARG); + LWIP_ERROR("udp_sendto_if_src: invalid src_ip", src_ip != NULL, return ERR_ARG); + LWIP_ERROR("udp_sendto_if_src: invalid netif", netif != NULL, return ERR_ARG); + + if (!IP_ADDR_PCB_VERSION_MATCH(pcb, src_ip) || + !IP_ADDR_PCB_VERSION_MATCH(pcb, dst_ip)) { + return ERR_VAL; + } + +#if LWIP_IPV4 && IP_SOF_BROADCAST + /* broadcast filter? */ + if (!ip_get_option(pcb, SOF_BROADCAST) && +#if LWIP_IPV6 + IP_IS_V4(dst_ip) && +#endif /* LWIP_IPV6 */ + ip_addr_isbroadcast(dst_ip, netif)) { + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, + ("udp_sendto_if: SOF_BROADCAST not enabled on pcb %p\n", (void *)pcb)); + return ERR_VAL; + } +#endif /* LWIP_IPV4 && IP_SOF_BROADCAST */ + + /* if the PCB is not yet bound to a port, bind it here */ + if (pcb->local_port == 0) { + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE, ("udp_send: not yet bound to a port, binding now\n")); + err = udp_bind(pcb, &pcb->local_ip, pcb->local_port); + if (err != ERR_OK) { + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("udp_send: forced port bind failed\n")); + return err; + } + } + + /* packet too large to add a UDP header without causing an overflow? */ + if ((u16_t)(p->tot_len + UDP_HLEN) < p->tot_len) { + return ERR_MEM; + } + /* not enough space to add an UDP header to first pbuf in given p chain? */ + if (pbuf_add_header(p, UDP_HLEN)) { + /* allocate header in a separate new pbuf */ + q = pbuf_alloc(PBUF_IP, UDP_HLEN, PBUF_RAM); + /* new header pbuf could not be allocated? */ + if (q == NULL) { + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("udp_send: could not allocate header\n")); + return ERR_MEM; + } + if (p->tot_len != 0) { + /* chain header q in front of given pbuf p (only if p contains data) */ + pbuf_chain(q, p); + } + /* first pbuf q points to header pbuf */ + LWIP_DEBUGF(UDP_DEBUG, + ("udp_send: added header pbuf %p before given pbuf %p\n", (void *)q, (void *)p)); + } else { + /* adding space for header within p succeeded */ + /* first pbuf q equals given pbuf */ + q = p; + LWIP_DEBUGF(UDP_DEBUG, ("udp_send: added header in given pbuf %p\n", (void *)p)); + } + LWIP_ASSERT("check that first pbuf can hold struct udp_hdr", + (q->len >= sizeof(struct udp_hdr))); + /* q now represents the packet to be sent */ + udphdr = (struct udp_hdr *)q->payload; +#if TUN2SOCKS + udphdr->src = lwip_htons(src_port); +#else + udphdr->src = lwip_htons(pcb->local_port); +#endif /* TUN2SOCKS */ + udphdr->dest = lwip_htons(dst_port); + /* in UDP, 0 checksum means 'no checksum' */ + udphdr->chksum = 0x0000; + + /* Multicast Loop? */ +#if LWIP_MULTICAST_TX_OPTIONS + if (((pcb->flags & UDP_FLAGS_MULTICAST_LOOP) != 0) && ip_addr_ismulticast(dst_ip)) { + q->flags |= PBUF_FLAG_MCASTLOOP; + } +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + + LWIP_DEBUGF(UDP_DEBUG, ("udp_send: sending datagram of length %"U16_F"\n", q->tot_len)); + +#if LWIP_UDPLITE + /* UDP Lite protocol? */ + if (pcb->flags & UDP_FLAGS_UDPLITE) { + u16_t chklen, chklen_hdr; + LWIP_DEBUGF(UDP_DEBUG, ("udp_send: UDP LITE packet length %"U16_F"\n", q->tot_len)); + /* set UDP message length in UDP header */ + chklen_hdr = chklen = pcb->chksum_len_tx; + if ((chklen < sizeof(struct udp_hdr)) || (chklen > q->tot_len)) { + if (chklen != 0) { + LWIP_DEBUGF(UDP_DEBUG, ("udp_send: UDP LITE pcb->chksum_len is illegal: %"U16_F"\n", chklen)); + } + /* For UDP-Lite, checksum length of 0 means checksum + over the complete packet. (See RFC 3828 chap. 3.1) + At least the UDP-Lite header must be covered by the + checksum, therefore, if chksum_len has an illegal + value, we generate the checksum over the complete + packet to be safe. */ + chklen_hdr = 0; + chklen = q->tot_len; + } + udphdr->len = lwip_htons(chklen_hdr); + /* calculate checksum */ +#if CHECKSUM_GEN_UDP + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_UDP) { +#if LWIP_CHECKSUM_ON_COPY + if (have_chksum) { + chklen = UDP_HLEN; + } +#endif /* LWIP_CHECKSUM_ON_COPY */ + udphdr->chksum = ip_chksum_pseudo_partial(q, IP_PROTO_UDPLITE, + q->tot_len, chklen, src_ip, dst_ip); +#if LWIP_CHECKSUM_ON_COPY + if (have_chksum) { + u32_t acc; + acc = udphdr->chksum + (u16_t)~(chksum); + udphdr->chksum = FOLD_U32T(acc); + } +#endif /* LWIP_CHECKSUM_ON_COPY */ + + /* chksum zero must become 0xffff, as zero means 'no checksum' */ + if (udphdr->chksum == 0x0000) { + udphdr->chksum = 0xffff; + } + } +#endif /* CHECKSUM_GEN_UDP */ + + ip_proto = IP_PROTO_UDPLITE; + } else +#endif /* LWIP_UDPLITE */ + { /* UDP */ + LWIP_DEBUGF(UDP_DEBUG, ("udp_send: UDP packet length %"U16_F"\n", q->tot_len)); + udphdr->len = lwip_htons(q->tot_len); + /* calculate checksum */ +#if CHECKSUM_GEN_UDP + IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_UDP) { + /* Checksum is mandatory over IPv6. */ + if (IP_IS_V6(dst_ip) || (pcb->flags & UDP_FLAGS_NOCHKSUM) == 0) { + u16_t udpchksum; +#if LWIP_CHECKSUM_ON_COPY + if (have_chksum) { + u32_t acc; + udpchksum = ip_chksum_pseudo_partial(q, IP_PROTO_UDP, + q->tot_len, UDP_HLEN, src_ip, dst_ip); + acc = udpchksum + (u16_t)~(chksum); + udpchksum = FOLD_U32T(acc); + } else +#endif /* LWIP_CHECKSUM_ON_COPY */ + { + udpchksum = ip_chksum_pseudo(q, IP_PROTO_UDP, q->tot_len, + src_ip, dst_ip); + } + + /* chksum zero must become 0xffff, as zero means 'no checksum' */ + if (udpchksum == 0x0000) { + udpchksum = 0xffff; + } + udphdr->chksum = udpchksum; + } + } +#endif /* CHECKSUM_GEN_UDP */ + ip_proto = IP_PROTO_UDP; + } + + /* Determine TTL to use */ +#if LWIP_MULTICAST_TX_OPTIONS + ttl = (ip_addr_ismulticast(dst_ip) ? udp_get_multicast_ttl(pcb) : pcb->ttl); +#else /* LWIP_MULTICAST_TX_OPTIONS */ + ttl = pcb->ttl; +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + + LWIP_DEBUGF(UDP_DEBUG, ("udp_send: UDP checksum 0x%04"X16_F"\n", udphdr->chksum)); + LWIP_DEBUGF(UDP_DEBUG, ("udp_send: ip_output_if (,,,,0x%02"X16_F",)\n", (u16_t)ip_proto)); + /* output to IP */ + NETIF_SET_HINTS(netif, &(pcb->netif_hints)); + err = ip_output_if_src(q, src_ip, dst_ip, ttl, pcb->tos, ip_proto, netif); + NETIF_RESET_HINTS(netif); + + /* @todo: must this be increased even if error occurred? */ + MIB2_STATS_INC(mib2.udpoutdatagrams); + + /* did we chain a separate header pbuf earlier? */ + if (q != p) { + /* free the header pbuf */ + pbuf_free(q); + q = NULL; + /* p is still referenced by the caller, and will live on */ + } + + UDP_STATS_INC(udp.xmit); + return err; +} + +/** + * @ingroup udp_raw + * Bind an UDP PCB. + * + * @param pcb UDP PCB to be bound with a local address ipaddr and port. + * @param ipaddr local IP address to bind with. Use IP_ANY_TYPE to + * bind to all local interfaces. + * @param port local UDP port to bind with. Use 0 to automatically bind + * to a random port between UDP_LOCAL_PORT_RANGE_START and + * UDP_LOCAL_PORT_RANGE_END. + * + * ipaddr & port are expected to be in the same byte order as in the pcb. + * + * @return lwIP error code. + * - ERR_OK. Successful. No error occurred. + * - ERR_USE. The specified ipaddr and port are already bound to by + * another UDP PCB. + * + * @see udp_disconnect() + */ +err_t +udp_bind(struct udp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port) +{ + struct udp_pcb *ipcb; + u8_t rebind; +#if LWIP_IPV6 && LWIP_IPV6_SCOPES + ip_addr_t zoned_ipaddr; +#endif /* LWIP_IPV6 && LWIP_IPV6_SCOPES */ + + LWIP_ASSERT_CORE_LOCKED(); + +#if LWIP_IPV4 + /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */ + if (ipaddr == NULL) { + ipaddr = IP4_ADDR_ANY; + } +#else /* LWIP_IPV4 */ + LWIP_ERROR("udp_bind: invalid ipaddr", ipaddr != NULL, return ERR_ARG); +#endif /* LWIP_IPV4 */ + + LWIP_ERROR("udp_bind: invalid pcb", pcb != NULL, return ERR_ARG); + + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE, ("udp_bind(ipaddr = ")); + ip_addr_debug_print(UDP_DEBUG | LWIP_DBG_TRACE, ipaddr); + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE, (", port = %"U16_F")\n", port)); + + rebind = 0; + /* Check for double bind and rebind of the same pcb */ + for (ipcb = udp_pcbs; ipcb != NULL; ipcb = ipcb->next) { + /* is this UDP PCB already on active list? */ + if (pcb == ipcb) { + rebind = 1; + break; + } + } + +#if LWIP_IPV6 && LWIP_IPV6_SCOPES + /* If the given IP address should have a zone but doesn't, assign one now. + * This is legacy support: scope-aware callers should always provide properly + * zoned source addresses. Do the zone selection before the address-in-use + * check below; as such we have to make a temporary copy of the address. */ + if (IP_IS_V6(ipaddr) && ip6_addr_lacks_zone(ip_2_ip6(ipaddr), IP6_UNKNOWN)) { + ip_addr_copy(zoned_ipaddr, *ipaddr); + ip6_addr_select_zone(ip_2_ip6(&zoned_ipaddr), ip_2_ip6(&zoned_ipaddr)); + ipaddr = &zoned_ipaddr; + } +#endif /* LWIP_IPV6 && LWIP_IPV6_SCOPES */ + + /* no port specified? */ + if (port == 0) { + port = udp_new_port(); + if (port == 0) { + /* no more ports available in local range */ + LWIP_DEBUGF(UDP_DEBUG, ("udp_bind: out of free UDP ports\n")); + return ERR_USE; + } + } else { + for (ipcb = udp_pcbs; ipcb != NULL; ipcb = ipcb->next) { + if (pcb != ipcb) { + /* By default, we don't allow to bind to a port that any other udp + PCB is already bound to, unless *all* PCBs with that port have tha + REUSEADDR flag set. */ +#if SO_REUSE + if (!ip_get_option(pcb, SOF_REUSEADDR) || + !ip_get_option(ipcb, SOF_REUSEADDR)) +#endif /* SO_REUSE */ + { + /* port matches that of PCB in list and REUSEADDR not set -> reject */ + if ((ipcb->local_port == port) && + /* IP address matches or any IP used? */ + (ip_addr_cmp(&ipcb->local_ip, ipaddr) || ip_addr_isany(ipaddr) || + ip_addr_isany(&ipcb->local_ip))) { + /* other PCB already binds to this local IP and port */ + LWIP_DEBUGF(UDP_DEBUG, + ("udp_bind: local port %"U16_F" already bound by another pcb\n", port)); + return ERR_USE; + } + } + } + } + } + + ip_addr_set_ipaddr(&pcb->local_ip, ipaddr); + + pcb->local_port = port; + mib2_udp_bind(pcb); + /* pcb not active yet? */ + if (rebind == 0) { + /* place the PCB on the active list if not already there */ + pcb->next = udp_pcbs; + udp_pcbs = pcb; + } + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("udp_bind: bound to ")); + ip_addr_debug_print_val(UDP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, pcb->local_ip); + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, (", port %"U16_F")\n", pcb->local_port)); + return ERR_OK; +} + +/** + * @ingroup udp_raw + * Bind an UDP PCB to a specific netif. + * After calling this function, all packets received via this PCB + * are guaranteed to have come in via the specified netif, and all + * outgoing packets will go out via the specified netif. + * + * @param pcb UDP PCB to be bound. + * @param netif netif to bind udp pcb to. Can be NULL. + * + * @see udp_disconnect() + */ +void +udp_bind_netif(struct udp_pcb *pcb, const struct netif *netif) +{ + LWIP_ASSERT_CORE_LOCKED(); + + if (netif != NULL) { + pcb->netif_idx = netif_get_index(netif); + } else { + pcb->netif_idx = NETIF_NO_INDEX; + } +} + +/** + * @ingroup udp_raw + * Sets the remote end of the pcb. This function does not generate any + * network traffic, but only sets the remote address of the pcb. + * + * @param pcb UDP PCB to be connected with remote address ipaddr and port. + * @param ipaddr remote IP address to connect with. + * @param port remote UDP port to connect with. + * + * @return lwIP error code + * + * ipaddr & port are expected to be in the same byte order as in the pcb. + * + * The udp pcb is bound to a random local port if not already bound. + * + * @see udp_disconnect() + */ +err_t +udp_connect(struct udp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port) +{ + struct udp_pcb *ipcb; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("udp_connect: invalid pcb", pcb != NULL, return ERR_ARG); + LWIP_ERROR("udp_connect: invalid ipaddr", ipaddr != NULL, return ERR_ARG); + + if (pcb->local_port == 0) { + err_t err = udp_bind(pcb, &pcb->local_ip, pcb->local_port); + if (err != ERR_OK) { + return err; + } + } + + ip_addr_set_ipaddr(&pcb->remote_ip, ipaddr); +#if LWIP_IPV6 && LWIP_IPV6_SCOPES + /* If the given IP address should have a zone but doesn't, assign one now, + * using the bound address to make a more informed decision when possible. */ + if (IP_IS_V6(&pcb->remote_ip) && + ip6_addr_lacks_zone(ip_2_ip6(&pcb->remote_ip), IP6_UNKNOWN)) { + ip6_addr_select_zone(ip_2_ip6(&pcb->remote_ip), ip_2_ip6(&pcb->local_ip)); + } +#endif /* LWIP_IPV6 && LWIP_IPV6_SCOPES */ + + pcb->remote_port = port; + pcb->flags |= UDP_FLAGS_CONNECTED; + + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("udp_connect: connected to ")); + ip_addr_debug_print_val(UDP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, + pcb->remote_ip); + LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, (", port %"U16_F")\n", pcb->remote_port)); + + /* Insert UDP PCB into the list of active UDP PCBs. */ + for (ipcb = udp_pcbs; ipcb != NULL; ipcb = ipcb->next) { + if (pcb == ipcb) { + /* already on the list, just return */ + return ERR_OK; + } + } + /* PCB not yet on the list, add PCB now */ + pcb->next = udp_pcbs; + udp_pcbs = pcb; + return ERR_OK; +} + +/** + * @ingroup udp_raw + * Remove the remote end of the pcb. This function does not generate + * any network traffic, but only removes the remote address of the pcb. + * + * @param pcb the udp pcb to disconnect. + */ +void +udp_disconnect(struct udp_pcb *pcb) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("udp_disconnect: invalid pcb", pcb != NULL, return); + + /* reset remote address association */ +#if LWIP_IPV4 && LWIP_IPV6 + if (IP_IS_ANY_TYPE_VAL(pcb->local_ip)) { + ip_addr_copy(pcb->remote_ip, *IP_ANY_TYPE); + } else { +#endif + ip_addr_set_any(IP_IS_V6_VAL(pcb->remote_ip), &pcb->remote_ip); +#if LWIP_IPV4 && LWIP_IPV6 + } +#endif + pcb->remote_port = 0; + pcb->netif_idx = NETIF_NO_INDEX; + /* mark PCB as unconnected */ + udp_clear_flags(pcb, UDP_FLAGS_CONNECTED); +} + +/** + * @ingroup udp_raw + * Set a receive callback for a UDP PCB. + * This callback will be called when receiving a datagram for the pcb. + * + * @param pcb the pcb for which to set the recv callback + * @param recv function pointer of the callback function + * @param recv_arg additional argument to pass to the callback function + */ +void +udp_recv(struct udp_pcb *pcb, udp_recv_fn recv, void *recv_arg) +{ + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("udp_recv: invalid pcb", pcb != NULL, return); + + /* remember recv() callback and user data */ + pcb->recv = recv; + pcb->recv_arg = recv_arg; +} + +/** + * @ingroup udp_raw + * Removes and deallocates the pcb. + * + * @param pcb UDP PCB to be removed. The PCB is removed from the list of + * UDP PCB's and the data structure is freed from memory. + * + * @see udp_new() + */ +void +udp_remove(struct udp_pcb *pcb) +{ + struct udp_pcb *pcb2; + + LWIP_ASSERT_CORE_LOCKED(); + + LWIP_ERROR("udp_remove: invalid pcb", pcb != NULL, return); + + mib2_udp_unbind(pcb); + /* pcb to be removed is first in list? */ + if (udp_pcbs == pcb) { + /* make list start at 2nd pcb */ + udp_pcbs = udp_pcbs->next; + /* pcb not 1st in list */ + } else { + for (pcb2 = udp_pcbs; pcb2 != NULL; pcb2 = pcb2->next) { + /* find pcb in udp_pcbs list */ + if (pcb2->next != NULL && pcb2->next == pcb) { + /* remove pcb from list */ + pcb2->next = pcb->next; + break; + } + } + } + memp_free(MEMP_UDP_PCB, pcb); +} + +/** + * @ingroup udp_raw + * Creates a new UDP pcb which can be used for UDP communication. The + * pcb is not active until it has either been bound to a local address + * or connected to a remote address. + * + * @return The UDP PCB which was created. NULL if the PCB data structure + * could not be allocated. + * + * @see udp_remove() + */ +struct udp_pcb * +udp_new(void) +{ + struct udp_pcb *pcb; + + LWIP_ASSERT_CORE_LOCKED(); + + pcb = (struct udp_pcb *)memp_malloc(MEMP_UDP_PCB); + /* could allocate UDP PCB? */ + if (pcb != NULL) { + /* UDP Lite: by initializing to all zeroes, chksum_len is set to 0 + * which means checksum is generated over the whole datagram per default + * (recommended as default by RFC 3828). */ + /* initialize PCB to all zeroes */ + memset(pcb, 0, sizeof(struct udp_pcb)); + pcb->ttl = UDP_TTL; +#if LWIP_MULTICAST_TX_OPTIONS + udp_set_multicast_ttl(pcb, UDP_TTL); +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + } + return pcb; +} + +/** + * @ingroup udp_raw + * Create a UDP PCB for specific IP type. + * The pcb is not active until it has either been bound to a local address + * or connected to a remote address. + * + * @param type IP address type, see @ref lwip_ip_addr_type definitions. + * If you want to listen to IPv4 and IPv6 (dual-stack) packets, + * supply @ref IPADDR_TYPE_ANY as argument and bind to @ref IP_ANY_TYPE. + * @return The UDP PCB which was created. NULL if the PCB data structure + * could not be allocated. + * + * @see udp_remove() + */ +struct udp_pcb * +udp_new_ip_type(u8_t type) +{ + struct udp_pcb *pcb; + + LWIP_ASSERT_CORE_LOCKED(); + + pcb = udp_new(); +#if LWIP_IPV4 && LWIP_IPV6 + if (pcb != NULL) { + IP_SET_TYPE_VAL(pcb->local_ip, type); + IP_SET_TYPE_VAL(pcb->remote_ip, type); + } +#else + LWIP_UNUSED_ARG(type); +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + return pcb; +} + +/** This function is called from netif.c when address is changed + * + * @param old_addr IP address of the netif before change + * @param new_addr IP address of the netif after change + */ +void udp_netif_ip_addr_changed(const ip_addr_t *old_addr, const ip_addr_t *new_addr) +{ + struct udp_pcb *upcb; + + if (!ip_addr_isany(old_addr) && !ip_addr_isany(new_addr)) { + for (upcb = udp_pcbs; upcb != NULL; upcb = upcb->next) { + /* PCB bound to current local interface address? */ + if (ip_addr_cmp(&upcb->local_ip, old_addr)) { + /* The PCB is bound to the old ipaddr and + * is set to bound to the new one instead */ + ip_addr_copy(upcb->local_ip, *new_addr); + } + } + } +} + +#if UDP_DEBUG +/** + * Print UDP header information for debug purposes. + * + * @param udphdr pointer to the udp header in memory. + */ +void +udp_debug_print(struct udp_hdr *udphdr) +{ + LWIP_DEBUGF(UDP_DEBUG, ("UDP header:\n")); + LWIP_DEBUGF(UDP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(UDP_DEBUG, ("| %5"U16_F" | %5"U16_F" | (src port, dest port)\n", + lwip_ntohs(udphdr->src), lwip_ntohs(udphdr->dest))); + LWIP_DEBUGF(UDP_DEBUG, ("+-------------------------------+\n")); + LWIP_DEBUGF(UDP_DEBUG, ("| %5"U16_F" | 0x%04"X16_F" | (len, chksum)\n", + lwip_ntohs(udphdr->len), lwip_ntohs(udphdr->chksum))); + LWIP_DEBUGF(UDP_DEBUG, ("+-------------------------------+\n")); +} +#endif /* UDP_DEBUG */ + +#endif /* LWIP_UDP */ diff --git a/Other/tun2socks/core/c/custom/arch/bpstruct.h b/Other/tun2socks/core/c/custom/arch/bpstruct.h new file mode 100644 index 0000000..1d81e3f --- /dev/null +++ b/Other/tun2socks/core/c/custom/arch/bpstruct.h @@ -0,0 +1 @@ +#pragma pack(push,1) diff --git a/Other/tun2socks/core/c/custom/arch/cc.h b/Other/tun2socks/core/c/custom/arch/cc.h new file mode 100644 index 0000000..e0842f3 --- /dev/null +++ b/Other/tun2socks/core/c/custom/arch/cc.h @@ -0,0 +1,6 @@ +#ifdef _WIN32 + // both win32 and win64 are defined here + #include "cc_windows.h" +#else + #include "cc_others.h" +#endif diff --git a/Other/tun2socks/core/c/custom/arch/cc_others.h b/Other/tun2socks/core/c/custom/arch/cc_others.h new file mode 100644 index 0000000..2198b72 --- /dev/null +++ b/Other/tun2socks/core/c/custom/arch/cc_others.h @@ -0,0 +1,99 @@ +/* + * Copyright (c) 2001-2003 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_ARCH_CC_H +#define LWIP_ARCH_CC_H + +/* Include some files for defining library routines */ +#include + +#define LWIP_TIMEVAL_PRIVATE 0 + +/* Define platform endianness */ +#ifndef BYTE_ORDER +#define BYTE_ORDER LITTLE_ENDIAN +#endif /* BYTE_ORDER */ + +/* Define generic types used in lwIP */ +/* +typedef unsigned char u8_t; +typedef signed char s8_t; +typedef unsigned short u16_t; +typedef signed short s16_t; +typedef unsigned int u32_t; +typedef signed int s32_t; + +typedef unsigned long mem_ptr_t; +*/ + +/* Define (sn)printf formatters for these lwIP types */ +#define X8_F "02x" +#define U16_F "hu" +#define S16_F "hd" +#define X16_F "hx" +#define U32_F "u" +#define S32_F "d" +#define X32_F "x" + +/* If only we could use C99 and get %zu */ +#if defined(__x86_64__) +#define SZT_F "lu" +#else +#define SZT_F "u" +#endif + +/* Compiler hints for packing structures */ +#define PACK_STRUCT_FIELD(x) x +#define PACK_STRUCT_STRUCT __attribute__((packed)) +#define PACK_STRUCT_BEGIN +#define PACK_STRUCT_END + +/* prototypes for printf() and abort() */ +#include +#include +/* Plaform specific diagnostic output */ +#define LWIP_PLATFORM_DIAG(x) do {printf x;} while(0) + +#ifdef LWIP_UNIX_EMPTY_ASSERT +#define LWIP_PLATFORM_ASSERT(x) +#else +#define LWIP_PLATFORM_ASSERT(x) do {printf("Assertion \"%s\" failed at line %d in %s\n", \ +x, __LINE__, __FILE__); fflush(NULL); abort();} while(0) +#endif + +#define LWIP_RAND() ((u32_t)rand()) + +struct sio_status_s; +typedef struct sio_status_s sio_status_t; +#define sio_fd_t sio_status_t* +#define __sio_fd_t_defined + +#endif /* LWIP_ARCH_CC_H */ diff --git a/Other/tun2socks/core/c/custom/arch/cc_windows.h b/Other/tun2socks/core/c/custom/arch/cc_windows.h new file mode 100644 index 0000000..1eb69c9 --- /dev/null +++ b/Other/tun2socks/core/c/custom/arch/cc_windows.h @@ -0,0 +1,102 @@ +/* + * Copyright (c) 2001-2003 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_ARCH_CC_H +#define LWIP_ARCH_CC_H + +#ifdef _MSC_VER +#pragma warning (disable: 4127) /* conditional expression is constant */ +#pragma warning (disable: 4996) /* 'strncpy' was declared deprecated */ +#pragma warning (disable: 4103) /* structure packing changed by including file */ +#pragma warning (disable: 4820) /* 'x' bytes padding added after data member 'y' */ +#pragma warning (disable: 4711) /* The compiler performed inlining on the given function, although it was not marked for inlining */ +#endif + +#define LWIP_PROVIDE_ERRNO + +/* Define platform endianness (might already be defined) */ +#ifndef BYTE_ORDER +#define BYTE_ORDER LITTLE_ENDIAN +#endif /* BYTE_ORDER */ + +typedef int sys_prot_t; + +#ifdef _MSC_VER +/* define _INTPTR for Win32 MSVC stdint.h */ +#define _INTPTR 2 + +/* Do not use lwIP default definitions for format strings + * because these do not work with MSVC 2010 compiler (no inttypes.h) + */ +#define LWIP_NO_INTTYPES_H 1 + +/* Define (sn)printf formatters for these lwIP types */ +#define X8_F "02x" +#define U16_F "hu" +#define U32_F "lu" +#define S32_F "ld" +#define X32_F "lx" + +#define S16_F "hd" +#define X16_F "hx" +#define SZT_F "lu" +#endif /* _MSC_VER */ + +/* Compiler hints for packing structures */ +#define PACK_STRUCT_USE_INCLUDES + +#define LWIP_ERROR(message, expression, handler) do { if (!(expression)) { \ + printf("Assertion \"%s\" failed at line %d in %s\n", message, __LINE__, __FILE__); \ + fflush(NULL);handler;} } while(0) + +#ifdef _MSC_VER +/* C runtime functions redefined */ +#define snprintf _snprintf +#define strdup _strdup +#endif + +/* Define an example for LWIP_PLATFORM_DIAG: since this uses varargs and the old + * C standard lwIP targets does not support this in macros, we have extra brackets + * around the arguments, which are left out in the following macro definition: + */ +#if !defined(LWIP_TESTMODE) || !LWIP_TESTMODE +void lwip_win32_platform_diag(const char *format, ...); +#define LWIP_PLATFORM_DIAG(x) lwip_win32_platform_diag x +#endif + +#ifndef LWIP_NORAND +extern unsigned int sys_win_rand(void); +#define LWIP_RAND() (sys_win_rand()) +#endif + +#define PPP_INCLUDE_SETTINGS_HEADER + +#endif /* LWIP_ARCH_CC_H */ diff --git a/Other/tun2socks/core/c/custom/arch/epstruct.h b/Other/tun2socks/core/c/custom/arch/epstruct.h new file mode 100644 index 0000000..65898b5 --- /dev/null +++ b/Other/tun2socks/core/c/custom/arch/epstruct.h @@ -0,0 +1 @@ +#pragma pack(pop) diff --git a/Other/tun2socks/core/c/custom/arch/perf.h b/Other/tun2socks/core/c/custom/arch/perf.h new file mode 100644 index 0000000..04cfd6b --- /dev/null +++ b/Other/tun2socks/core/c/custom/arch/perf.h @@ -0,0 +1,7 @@ +#ifndef perf_h +#define perf_h + +#define PERF_START +#define PERF_STOP(x) + +#endif /* perf_h */ diff --git a/Other/tun2socks/core/c/custom/arch/sys_arch.h b/Other/tun2socks/core/c/custom/arch/sys_arch.h new file mode 100644 index 0000000..52ef1b1 --- /dev/null +++ b/Other/tun2socks/core/c/custom/arch/sys_arch.h @@ -0,0 +1,7 @@ +#ifndef __ARCH_SYS_ARCH_H__ +#define __ARCH_SYS_ARCH_H__ + +#define SYS_MBOX_NULL NULL +#define SYS_SEM_NULL NULL + +#endif /* __ARCH_SYS_ARCH_H__ */ diff --git a/Other/tun2socks/core/c/custom/lwipopts.h b/Other/tun2socks/core/c/custom/lwipopts.h new file mode 100644 index 0000000..a995d9f --- /dev/null +++ b/Other/tun2socks/core/c/custom/lwipopts.h @@ -0,0 +1,118 @@ +/** + * @file lwipopts.h + * @author Ambroz Bizjak + * + * @section LICENSE + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the author nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef LWIP_CUSTOM_LWIPOPTS_H +#define LWIP_CUSTOM_LWIPOPTS_H + +// enable tun2socks logic +#define TUN2SOCKS 1 + +#define NO_SYS 1 +#define LWIP_TIMERS 1 + +#define IP_DEFAULT_TTL 64 +#define LWIP_ARP 0 +#define ARP_QUEUEING 0 +#define IP_FORWARD 0 +#define LWIP_ICMP 1 +#define LWIP_RAW 1 +#define LWIP_DHCP 0 +#define LWIP_AUTOIP 0 +#define LWIP_SNMP 0 +#define LWIP_IGMP 0 +#define LWIP_DNS 0 +#define LWIP_UDP 1 +#define LWIP_UDPLITE 0 +#define LWIP_TCP 1 +#define LWIP_CALLBACK_API 1 +#define LWIP_NETIF_API 0 +#define LWIP_NETIF_LOOPBACK 0 +#define LWIP_HAVE_LOOPIF 1 +#define LWIP_HAVE_SLIPIF 0 +#define LWIP_NETCONN 0 +#define LWIP_SOCKET 0 +#define PPP_SUPPORT 0 +#define LWIP_IPV6 1 +#define LWIP_IPV6_MLD 0 +#define LWIP_IPV6_AUTOCONFIG 1 + +// disable checksum checks +#define CHECKSUM_CHECK_IP 0 +#define CHECKSUM_CHECK_UDP 0 +#define CHECKSUM_CHECK_TCP 0 +#define CHECKSUM_CHECK_ICMP 0 +#define CHECKSUM_CHECK_ICMP6 0 + +#define LWIP_CHECKSUM_ON_COPY 1 + +#define MEMP_NUM_TCP_PCB_LISTEN 1 +#define MEMP_NUM_TCP_PCB 16 +#define MEMP_NUM_UDP_PCB 1 + +/* +#define TCP_LISTEN_BACKLOG 1 +#define TCP_DEFAULT_LISTEN_BACKLOG 0xff +#define LWIP_TCP_TIMESTAMPS 1 +*/ + +#define TCP_MSS 1460 +// ponytail: 0xffff is the max without LWIP_WND_SCALE; MEMP_NUM_*/MEM_SIZE are no-ops with MEMP_MEM_MALLOC/MEM_LIBC_MALLOC +#define TCP_WND 0xffff +#define TCP_SND_BUF (TCP_WND) + +#define MEM_LIBC_MALLOC 1 +#define MEMP_MEM_MALLOC 1 +#define MEM_SIZE 128 * 1024 + +#define SYS_LIGHTWEIGHT_PROT 0 +#define LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS + +// needed on 64-bit systems, enable it always so that the same configuration +// is used regardless of the platform +#define IPV6_FRAG_COPYHEADER 1 + +#define LWIP_DEBUG 0 +#define LWIP_DBG_TYPES_ON LWIP_DBG_OFF +#define INET_DEBUG LWIP_DBG_ON +#define IP_DEBUG LWIP_DBG_ON +#define RAW_DEBUG LWIP_DBG_ON +#define SYS_DEBUG LWIP_DBG_ON +#define NETIF_DEBUG LWIP_DBG_ON +#define TCP_DEBUG LWIP_DBG_ON +#define UDP_DEBUG LWIP_DBG_ON +#define TCP_INPUT_DEBUG LWIP_DBG_ON +#define TCP_OUTPUT_DEBUG LWIP_DBG_ON +#define TCPIP_DEBUG LWIP_DBG_ON +#define IP6_DEBUG LWIP_DBG_ON + +#define LWIP_STATS 0 +#define LWIP_STATS_DISPLAY 0 +#define LWIP_PERF 0 + +#endif diff --git a/Other/tun2socks/core/c/custom/sys_arch.c b/Other/tun2socks/core/c/custom/sys_arch.c new file mode 100644 index 0000000..3ca064f --- /dev/null +++ b/Other/tun2socks/core/c/custom/sys_arch.c @@ -0,0 +1,223 @@ +#include "lwip/opt.h" +#include "lwip/sys.h" + +#ifdef _WIN32 + // defines both win32 and win64 + #ifdef _MSC_VER + #pragma warning (push, 3) + #endif + #include + #ifdef _MSC_VER + #pragma warning (pop) + #endif + #include + + #include + #include + #include + #include + + /** Set this to 1 to enable assertion checks that SYS_ARCH_PROTECT() is only + * called once in a call stack (calling it nested might cause trouble in some + * implementations, so let's avoid this in core code as long as we can). + */ + #ifndef LWIP_SYS_ARCH_CHECK_NESTED_PROTECT + #define LWIP_SYS_ARCH_CHECK_NESTED_PROTECT 1 + #endif + + /** Set this to 1 to enable assertion checks that SYS_ARCH_PROTECT() is *not* + * called before functions potentiolly involving the OS scheduler. + * + * This scheme is currently broken only for non-core-locking when waking up + * threads waiting on a socket via select/poll. + */ + #ifndef LWIP_SYS_ARCH_CHECK_SCHEDULING_UNPROTECTED + #define LWIP_SYS_ARCH_CHECK_SCHEDULING_UNPROTECTED LWIP_TCPIP_CORE_LOCKING + #endif + + #define LWIP_WIN32_SYS_ARCH_ENABLE_PROTECT_COUNTER (LWIP_SYS_ARCH_CHECK_NESTED_PROTECT || LWIP_SYS_ARCH_CHECK_SCHEDULING_UNPROTECTED) + + /* These functions are used from NO_SYS also, for precise timer triggering */ + static LARGE_INTEGER freq, sys_start_time; + #define SYS_INITIALIZED() (freq.QuadPart != 0) + + static DWORD netconn_sem_tls_index; + + static HCRYPTPROV hcrypt; + + u32_t + sys_win_rand(void) + { + u32_t ret; + if (CryptGenRandom(hcrypt, sizeof(ret), (BYTE*)&ret)) { + return ret; + } + LWIP_ASSERT("CryptGenRandom failed", 0); + return 0; + } + + static void + sys_win_rand_init(void) + { + if (!CryptAcquireContext(&hcrypt, NULL, NULL, PROV_RSA_FULL, 0)) { + DWORD err = GetLastError(); + LWIP_PLATFORM_DIAG(("CryptAcquireContext failed with error %d, trying to create NEWKEYSET", (int)err)); + if(!CryptAcquireContext(&hcrypt, NULL, NULL, PROV_RSA_FULL, CRYPT_NEWKEYSET)) { + char errbuf[128]; + err = GetLastError(); + snprintf(errbuf, sizeof(errbuf), "CryptAcquireContext failed with error %d", (int)err); + LWIP_UNUSED_ARG(err); + LWIP_ASSERT(errbuf, 0); + } + } + } + + static void + sys_init_timing(void) + { + QueryPerformanceFrequency(&freq); + QueryPerformanceCounter(&sys_start_time); + } + + static LONGLONG + sys_get_ms_longlong(void) + { + LONGLONG ret; + LARGE_INTEGER now; + #if NO_SYS + if (!SYS_INITIALIZED()) { + sys_init(); + LWIP_ASSERT("initialization failed", SYS_INITIALIZED()); + } + #endif /* NO_SYS */ + QueryPerformanceCounter(&now); + ret = now.QuadPart-sys_start_time.QuadPart; + return (u32_t)(((ret)*1000)/freq.QuadPart); + } + + u32_t + sys_jiffies(void) + { + return (u32_t)sys_get_ms_longlong(); + } + + u32_t + sys_now(void) + { + return (u32_t)sys_get_ms_longlong(); + } + + CRITICAL_SECTION critSec; + #if LWIP_WIN32_SYS_ARCH_ENABLE_PROTECT_COUNTER + static int protection_depth; + #endif + + static void + InitSysArchProtect(void) + { + InitializeCriticalSection(&critSec); + } + + sys_prot_t + sys_arch_protect(void) + { + #if NO_SYS + if (!SYS_INITIALIZED()) { + sys_init(); + LWIP_ASSERT("initialization failed", SYS_INITIALIZED()); + } + #endif + EnterCriticalSection(&critSec); + #if LWIP_SYS_ARCH_CHECK_NESTED_PROTECT + LWIP_ASSERT("nested SYS_ARCH_PROTECT", protection_depth == 0); + #endif + #if LWIP_WIN32_SYS_ARCH_ENABLE_PROTECT_COUNTER + protection_depth++; + #endif + return 0; + } + + void + sys_arch_unprotect(sys_prot_t pval) + { + LWIP_UNUSED_ARG(pval); + #if LWIP_SYS_ARCH_CHECK_NESTED_PROTECT + LWIP_ASSERT("missing SYS_ARCH_PROTECT", protection_depth == 1); + #else + LWIP_ASSERT("missing SYS_ARCH_PROTECT", protection_depth > 0); + #endif + #if LWIP_WIN32_SYS_ARCH_ENABLE_PROTECT_COUNTER + protection_depth--; + #endif + LeaveCriticalSection(&critSec); + } + + #if LWIP_SYS_ARCH_CHECK_SCHEDULING_UNPROTECTED + /** This checks that SYS_ARCH_PROTECT() hasn't been called by protecting + * and then checking the level + */ + static void + sys_arch_check_not_protected(void) + { + sys_arch_protect(); + LWIP_ASSERT("SYS_ARCH_PROTECT before scheduling", protection_depth == 1); + sys_arch_unprotect(0); + } + #else + #define sys_arch_check_not_protected() + #endif + + static void + msvc_sys_init(void) + { + sys_win_rand_init(); + sys_init_timing(); + InitSysArchProtect(); + netconn_sem_tls_index = TlsAlloc(); + LWIP_ASSERT("TlsAlloc failed", netconn_sem_tls_index != TLS_OUT_OF_INDEXES); + } + + void + sys_init(void) + { + msvc_sys_init(); + } + + #include + + /* This is an example implementation for LWIP_PLATFORM_DIAG: + * format a string and pass it to your output function. + */ + void + lwip_win32_platform_diag(const char *format, ...) + { + va_list ap; + /* get the varargs */ + va_start(ap, format); + /* print via varargs; to use another output function, you could use + vsnprintf here */ + vprintf(format, ap); + va_end(ap); + } +#elif __APPLE__ + #include + u32_t sys_now(void) { + uint64_t now = mach_absolute_time(); + mach_timebase_info_data_t info; + mach_timebase_info(&info); + now = now * info.numer / info.denom / NSEC_PER_MSEC; + return (u32_t)(now); + } +#elif __linux + #include + u32_t sys_now(void) + { + struct timeval te; + gettimeofday(&te, NULL); + return te.tv_sec*1000LL + te.tv_usec/1000; + } +#elif __unix // all unices not caught above + // Unix +#elif __posix + // POSIX +#endif diff --git a/Other/tun2socks/core/c/include/compat/posix/arpa/inet.h b/Other/tun2socks/core/c/include/compat/posix/arpa/inet.h new file mode 100644 index 0000000..0ed9baf --- /dev/null +++ b/Other/tun2socks/core/c/include/compat/posix/arpa/inet.h @@ -0,0 +1,33 @@ +/** + * @file + * This file is a posix wrapper for lwip/sockets.h. + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "lwip/sockets.h" diff --git a/Other/tun2socks/core/c/include/compat/posix/net/if.h b/Other/tun2socks/core/c/include/compat/posix/net/if.h new file mode 100644 index 0000000..6b8e63a --- /dev/null +++ b/Other/tun2socks/core/c/include/compat/posix/net/if.h @@ -0,0 +1,36 @@ +/** + * @file + * This file is a posix wrapper for lwip/if_api.h. + */ + +/* + * Copyright (c) 2017 Joel Cunningham, Garmin International, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "lwip/if_api.h" diff --git a/Other/tun2socks/core/c/include/compat/posix/netdb.h b/Other/tun2socks/core/c/include/compat/posix/netdb.h new file mode 100644 index 0000000..12d4c7f --- /dev/null +++ b/Other/tun2socks/core/c/include/compat/posix/netdb.h @@ -0,0 +1,33 @@ +/** + * @file + * This file is a posix wrapper for lwip/netdb.h. + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "lwip/netdb.h" diff --git a/Other/tun2socks/core/c/include/compat/posix/sys/socket.h b/Other/tun2socks/core/c/include/compat/posix/sys/socket.h new file mode 100644 index 0000000..0ed9baf --- /dev/null +++ b/Other/tun2socks/core/c/include/compat/posix/sys/socket.h @@ -0,0 +1,33 @@ +/** + * @file + * This file is a posix wrapper for lwip/sockets.h. + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "lwip/sockets.h" diff --git a/Other/tun2socks/core/c/include/compat/stdc/errno.h b/Other/tun2socks/core/c/include/compat/stdc/errno.h new file mode 100644 index 0000000..98a9aec --- /dev/null +++ b/Other/tun2socks/core/c/include/compat/stdc/errno.h @@ -0,0 +1,33 @@ +/** + * @file + * This file is a posix/stdc wrapper for lwip/errno.h. + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "lwip/errno.h" diff --git a/Other/tun2socks/core/c/include/lwip/altcp.h b/Other/tun2socks/core/c/include/lwip/altcp.h new file mode 100644 index 0000000..97abc54 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/altcp.h @@ -0,0 +1,201 @@ +/** + * @file + * Application layered TCP connection API (to be used from TCPIP thread)\n + * + * This file contains the generic API. + * For more details see @ref altcp_api. + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_ALTCP_H +#define LWIP_HDR_ALTCP_H + +#include "lwip/opt.h" + +#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/tcpbase.h" +#include "lwip/err.h" +#include "lwip/pbuf.h" +#include "lwip/ip_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct altcp_pcb; +struct altcp_functions; + +typedef err_t (*altcp_accept_fn)(void *arg, struct altcp_pcb *new_conn, err_t err); +typedef err_t (*altcp_connected_fn)(void *arg, struct altcp_pcb *conn, err_t err); +typedef err_t (*altcp_recv_fn)(void *arg, struct altcp_pcb *conn, struct pbuf *p, err_t err); +typedef err_t (*altcp_sent_fn)(void *arg, struct altcp_pcb *conn, u16_t len); +typedef err_t (*altcp_poll_fn)(void *arg, struct altcp_pcb *conn); +typedef void (*altcp_err_fn)(void *arg, err_t err); + +typedef struct altcp_pcb* (*altcp_new_fn)(void *arg, u8_t ip_type); + +struct altcp_pcb { + const struct altcp_functions *fns; + struct altcp_pcb *inner_conn; + void *arg; + void *state; + /* application callbacks */ + altcp_accept_fn accept; + altcp_connected_fn connected; + altcp_recv_fn recv; + altcp_sent_fn sent; + altcp_poll_fn poll; + altcp_err_fn err; + u8_t pollinterval; +}; + +/** @ingroup altcp */ +typedef struct altcp_allocator_s { + /** Allocator function */ + altcp_new_fn alloc; + /** Argument to allocator function */ + void *arg; +} altcp_allocator_t; + +struct altcp_pcb *altcp_new(altcp_allocator_t *allocator); +struct altcp_pcb *altcp_new_ip6(altcp_allocator_t *allocator); +struct altcp_pcb *altcp_new_ip_type(altcp_allocator_t *allocator, u8_t ip_type); + +void altcp_arg(struct altcp_pcb *conn, void *arg); +void altcp_accept(struct altcp_pcb *conn, altcp_accept_fn accept); +void altcp_recv(struct altcp_pcb *conn, altcp_recv_fn recv); +void altcp_sent(struct altcp_pcb *conn, altcp_sent_fn sent); +void altcp_poll(struct altcp_pcb *conn, altcp_poll_fn poll, u8_t interval); +void altcp_err(struct altcp_pcb *conn, altcp_err_fn err); + +void altcp_recved(struct altcp_pcb *conn, u16_t len); +err_t altcp_bind(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port); +err_t altcp_connect(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port, altcp_connected_fn connected); + +/* return conn for source code compatibility to tcp callback API only */ +struct altcp_pcb *altcp_listen_with_backlog_and_err(struct altcp_pcb *conn, u8_t backlog, err_t *err); +#define altcp_listen_with_backlog(conn, backlog) altcp_listen_with_backlog_and_err(conn, backlog, NULL) +/** @ingroup altcp */ +#define altcp_listen(conn) altcp_listen_with_backlog_and_err(conn, TCP_DEFAULT_LISTEN_BACKLOG, NULL) + +void altcp_abort(struct altcp_pcb *conn); +err_t altcp_close(struct altcp_pcb *conn); +err_t altcp_shutdown(struct altcp_pcb *conn, int shut_rx, int shut_tx); + +err_t altcp_write(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t apiflags); +err_t altcp_output(struct altcp_pcb *conn); + +u16_t altcp_mss(struct altcp_pcb *conn); +u16_t altcp_sndbuf(struct altcp_pcb *conn); +u16_t altcp_sndqueuelen(struct altcp_pcb *conn); +void altcp_nagle_disable(struct altcp_pcb *conn); +void altcp_nagle_enable(struct altcp_pcb *conn); +int altcp_nagle_disabled(struct altcp_pcb *conn); + +void altcp_setprio(struct altcp_pcb *conn, u8_t prio); + +err_t altcp_get_tcp_addrinfo(struct altcp_pcb *conn, int local, ip_addr_t *addr, u16_t *port); +ip_addr_t *altcp_get_ip(struct altcp_pcb *conn, int local); +u16_t altcp_get_port(struct altcp_pcb *conn, int local); + +#ifdef LWIP_DEBUG +enum tcp_state altcp_dbg_get_tcp_state(struct altcp_pcb *conn); +#endif + +#ifdef __cplusplus +} +#endif + +#else /* LWIP_ALTCP */ + +/* ALTCP disabled, define everything to link against tcp callback API (e.g. to get a small non-ssl httpd) */ + +#include "lwip/tcp.h" + +#define altcp_accept_fn tcp_accept_fn +#define altcp_connected_fn tcp_connected_fn +#define altcp_recv_fn tcp_recv_fn +#define altcp_sent_fn tcp_sent_fn +#define altcp_poll_fn tcp_poll_fn +#define altcp_err_fn tcp_err_fn + +#define altcp_pcb tcp_pcb +#define altcp_tcp_new_ip_type tcp_new_ip_type +#define altcp_tcp_new tcp_new +#define altcp_tcp_new_ip6 tcp_new_ip6 + +#define altcp_new(allocator) tcp_new() +#define altcp_new_ip6(allocator) tcp_new_ip6() +#define altcp_new_ip_type(allocator, ip_type) tcp_new_ip_type(ip_type) + +#define altcp_arg tcp_arg +#define altcp_accept tcp_accept +#define altcp_recv tcp_recv +#define altcp_sent tcp_sent +#define altcp_poll tcp_poll +#define altcp_err tcp_err + +#define altcp_recved tcp_recved +#define altcp_bind tcp_bind +#define altcp_connect tcp_connect + +#define altcp_listen_with_backlog_and_err tcp_listen_with_backlog_and_err +#define altcp_listen_with_backlog tcp_listen_with_backlog +#define altcp_listen tcp_listen + +#define altcp_abort tcp_abort +#define altcp_close tcp_close +#define altcp_shutdown tcp_shutdown + +#define altcp_write tcp_write +#define altcp_output tcp_output + +#define altcp_mss tcp_mss +#define altcp_sndbuf tcp_sndbuf +#define altcp_sndqueuelen tcp_sndqueuelen +#define altcp_nagle_disable tcp_nagle_disable +#define altcp_nagle_enable tcp_nagle_enable +#define altcp_nagle_disabled tcp_nagle_disabled +#define altcp_setprio tcp_setprio + +#define altcp_get_tcp_addrinfo tcp_get_tcp_addrinfo +#define altcp_get_ip(pcb, local) ((local) ? (&(pcb)->local_ip) : (&(pcb)->remote_ip)) + +#ifdef LWIP_DEBUG +#define altcp_dbg_get_tcp_state tcp_dbg_get_tcp_state +#endif + +#endif /* LWIP_ALTCP */ + +#endif /* LWIP_HDR_ALTCP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/altcp_tcp.h b/Other/tun2socks/core/c/include/lwip/altcp_tcp.h new file mode 100644 index 0000000..dbde584 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/altcp_tcp.h @@ -0,0 +1,72 @@ +/** + * @file + * Application layered TCP connection API (to be used from TCPIP thread)\n + * This interface mimics the tcp callback API to the application while preventing + * direct linking (much like virtual functions). + * This way, an application can make use of other application layer protocols + * on top of TCP without knowing the details (e.g. TLS, proxy connection). + * + * This file contains the base implementation calling into tcp. + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_ALTCP_TCP_H +#define LWIP_HDR_ALTCP_TCP_H + +#include "lwip/opt.h" + +#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/altcp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct altcp_pcb *altcp_tcp_new_ip_type(u8_t ip_type); + +#define altcp_tcp_new() altcp_tcp_new_ip_type(IPADDR_TYPE_V4) +#define altcp_tcp_new_ip6() altcp_tcp_new_ip_type(IPADDR_TYPE_V6) + +struct altcp_pcb *altcp_tcp_alloc(void *arg, u8_t ip_type); + +struct tcp_pcb; +struct altcp_pcb *altcp_tcp_wrap(struct tcp_pcb *tpcb); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_ALTCP */ + +#endif /* LWIP_HDR_ALTCP_TCP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/altcp_tls.h b/Other/tun2socks/core/c/include/lwip/altcp_tls.h new file mode 100644 index 0000000..7b17c60 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/altcp_tls.h @@ -0,0 +1,117 @@ +/** + * @file + * Application layered TCP/TLS connection API (to be used from TCPIP thread) + * + * @defgroup altcp_tls TLS layer + * @ingroup altcp + * This file contains function prototypes for a TLS layer. + * A port to ARM mbedtls is provided in the apps/ tree + * (LWIP_ALTCP_TLS_MBEDTLS option). + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_ALTCP_TLS_H +#define LWIP_HDR_ALTCP_TLS_H + +#include "lwip/opt.h" + +#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ + +#if LWIP_ALTCP_TLS + +#include "lwip/altcp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** @ingroup altcp_tls + * ALTCP_TLS configuration handle, content depends on port (e.g. mbedtls) + */ +struct altcp_tls_config; + +/** @ingroup altcp_tls + * Create an ALTCP_TLS server configuration handle + */ +struct altcp_tls_config *altcp_tls_create_config_server_privkey_cert(const u8_t *privkey, size_t privkey_len, + const u8_t *privkey_pass, size_t privkey_pass_len, + const u8_t *cert, size_t cert_len); + +/** @ingroup altcp_tls + * Create an ALTCP_TLS client configuration handle + */ +struct altcp_tls_config *altcp_tls_create_config_client(const u8_t *cert, size_t cert_len); + +/** @ingroup altcp_tls + * Create an ALTCP_TLS client configuration handle with two-way server/client authentication + */ +struct altcp_tls_config *altcp_tls_create_config_client_2wayauth(const u8_t *ca, size_t ca_len, const u8_t *privkey, size_t privkey_len, + const u8_t *privkey_pass, size_t privkey_pass_len, + const u8_t *cert, size_t cert_len); + +/** @ingroup altcp_tls + * Free an ALTCP_TLS configuration handle + */ +void altcp_tls_free_config(struct altcp_tls_config *conf); + +/** @ingroup altcp_tls + * Create new ALTCP_TLS layer wrapping an existing pcb as inner connection (e.g. TLS over TCP) + */ +struct altcp_pcb *altcp_tls_wrap(struct altcp_tls_config *config, struct altcp_pcb *inner_pcb); + +/** @ingroup altcp_tls + * Create new ALTCP_TLS pcb and its inner tcp pcb + */ +struct altcp_pcb *altcp_tls_new(struct altcp_tls_config *config, u8_t ip_type); + +/** @ingroup altcp_tls + * Create new ALTCP_TLS layer pcb and its inner tcp pcb. + * Same as @ref altcp_tls_new but this allocator function fits to + * @ref altcp_allocator_t / @ref altcp_new.\n + 'arg' must contain a struct altcp_tls_config *. + */ +struct altcp_pcb *altcp_tls_alloc(void *arg, u8_t ip_type); + +/** @ingroup altcp_tls + * Return pointer to internal TLS context so application can tweak it. + * Real type depends on port (e.g. mbedtls) + */ +void *altcp_tls_context(struct altcp_pcb *conn); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_ALTCP_TLS */ +#endif /* LWIP_ALTCP */ +#endif /* LWIP_HDR_ALTCP_TLS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/api.h b/Other/tun2socks/core/c/include/lwip/api.h new file mode 100644 index 0000000..c2afaf2 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/api.h @@ -0,0 +1,431 @@ +/** + * @file + * netconn API (to be used from non-TCPIP threads) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_API_H +#define LWIP_HDR_API_H + +#include "lwip/opt.h" + +#if LWIP_NETCONN || LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ +/* Note: Netconn API is always available when sockets are enabled - + * sockets are implemented on top of them */ + +#include "lwip/arch.h" +#include "lwip/netbuf.h" +#include "lwip/sys.h" +#include "lwip/ip_addr.h" +#include "lwip/err.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Throughout this file, IP addresses and port numbers are expected to be in + * the same byte order as in the corresponding pcb. + */ + +/* Flags for netconn_write (u8_t) */ +#define NETCONN_NOFLAG 0x00 +#define NETCONN_NOCOPY 0x00 /* Only for source code compatibility */ +#define NETCONN_COPY 0x01 +#define NETCONN_MORE 0x02 +#define NETCONN_DONTBLOCK 0x04 +#define NETCONN_NOAUTORCVD 0x08 /* prevent netconn_recv_data_tcp() from updating the tcp window - must be done manually via netconn_tcp_recvd() */ +#define NETCONN_NOFIN 0x10 /* upper layer already received data, leave FIN in queue until called again */ + +/* Flags for struct netconn.flags (u8_t) */ +/** This netconn had an error, don't block on recvmbox/acceptmbox any more */ +#define NETCONN_FLAG_MBOXCLOSED 0x01 +/** Should this netconn avoid blocking? */ +#define NETCONN_FLAG_NON_BLOCKING 0x02 +/** Was the last connect action a non-blocking one? */ +#define NETCONN_FLAG_IN_NONBLOCKING_CONNECT 0x04 +#if LWIP_NETCONN_FULLDUPLEX + /** The mbox of this netconn is being deallocated, don't use it anymore */ +#define NETCONN_FLAG_MBOXINVALID 0x08 +#endif /* LWIP_NETCONN_FULLDUPLEX */ +/** If a nonblocking write has been rejected before, poll_tcp needs to + check if the netconn is writable again */ +#define NETCONN_FLAG_CHECK_WRITESPACE 0x10 +#if LWIP_IPV6 +/** If this flag is set then only IPv6 communication is allowed on the + netconn. As per RFC#3493 this features defaults to OFF allowing + dual-stack usage by default. */ +#define NETCONN_FLAG_IPV6_V6ONLY 0x20 +#endif /* LWIP_IPV6 */ +#if LWIP_NETBUF_RECVINFO +/** Received packet info will be recorded for this netconn */ +#define NETCONN_FLAG_PKTINFO 0x40 +#endif /* LWIP_NETBUF_RECVINFO */ +/** A FIN has been received but not passed to the application yet */ +#define NETCONN_FIN_RX_PENDING 0x80 + +/* Helpers to process several netconn_types by the same code */ +#define NETCONNTYPE_GROUP(t) ((t)&0xF0) +#define NETCONNTYPE_DATAGRAM(t) ((t)&0xE0) +#if LWIP_IPV6 +#define NETCONN_TYPE_IPV6 0x08 +#define NETCONNTYPE_ISIPV6(t) (((t)&NETCONN_TYPE_IPV6) != 0) +#define NETCONNTYPE_ISUDPLITE(t) (((t)&0xF3) == NETCONN_UDPLITE) +#define NETCONNTYPE_ISUDPNOCHKSUM(t) (((t)&0xF3) == NETCONN_UDPNOCHKSUM) +#else /* LWIP_IPV6 */ +#define NETCONNTYPE_ISIPV6(t) (0) +#define NETCONNTYPE_ISUDPLITE(t) ((t) == NETCONN_UDPLITE) +#define NETCONNTYPE_ISUDPNOCHKSUM(t) ((t) == NETCONN_UDPNOCHKSUM) +#endif /* LWIP_IPV6 */ + +/** @ingroup netconn_common + * Protocol family and type of the netconn + */ +enum netconn_type { + NETCONN_INVALID = 0, + /** TCP IPv4 */ + NETCONN_TCP = 0x10, +#if LWIP_IPV6 + /** TCP IPv6 */ + NETCONN_TCP_IPV6 = NETCONN_TCP | NETCONN_TYPE_IPV6 /* 0x18 */, +#endif /* LWIP_IPV6 */ + /** UDP IPv4 */ + NETCONN_UDP = 0x20, + /** UDP IPv4 lite */ + NETCONN_UDPLITE = 0x21, + /** UDP IPv4 no checksum */ + NETCONN_UDPNOCHKSUM = 0x22, + +#if LWIP_IPV6 + /** UDP IPv6 (dual-stack by default, unless you call @ref netconn_set_ipv6only) */ + NETCONN_UDP_IPV6 = NETCONN_UDP | NETCONN_TYPE_IPV6 /* 0x28 */, + /** UDP IPv6 lite (dual-stack by default, unless you call @ref netconn_set_ipv6only) */ + NETCONN_UDPLITE_IPV6 = NETCONN_UDPLITE | NETCONN_TYPE_IPV6 /* 0x29 */, + /** UDP IPv6 no checksum (dual-stack by default, unless you call @ref netconn_set_ipv6only) */ + NETCONN_UDPNOCHKSUM_IPV6 = NETCONN_UDPNOCHKSUM | NETCONN_TYPE_IPV6 /* 0x2a */, +#endif /* LWIP_IPV6 */ + + /** Raw connection IPv4 */ + NETCONN_RAW = 0x40 +#if LWIP_IPV6 + /** Raw connection IPv6 (dual-stack by default, unless you call @ref netconn_set_ipv6only) */ + , NETCONN_RAW_IPV6 = NETCONN_RAW | NETCONN_TYPE_IPV6 /* 0x48 */ +#endif /* LWIP_IPV6 */ +}; + +/** Current state of the netconn. Non-TCP netconns are always + * in state NETCONN_NONE! */ +enum netconn_state { + NETCONN_NONE, + NETCONN_WRITE, + NETCONN_LISTEN, + NETCONN_CONNECT, + NETCONN_CLOSE +}; + +/** Used to inform the callback function about changes + * + * Event explanation: + * + * In the netconn implementation, there are three ways to block a client: + * + * - accept mbox (sys_arch_mbox_fetch(&conn->acceptmbox, &accept_ptr, 0); in netconn_accept()) + * - receive mbox (sys_arch_mbox_fetch(&conn->recvmbox, &buf, 0); in netconn_recv_data()) + * - send queue is full (sys_arch_sem_wait(LWIP_API_MSG_SEM(msg), 0); in lwip_netconn_do_write()) + * + * The events have to be seen as events signaling the state of these mboxes/semaphores. For non-blocking + * connections, you need to know in advance whether a call to a netconn function call would block or not, + * and these events tell you about that. + * + * RCVPLUS events say: Safe to perform a potentially blocking call call once more. + * They are counted in sockets - three RCVPLUS events for accept mbox means you are safe + * to call netconn_accept 3 times without being blocked. + * Same thing for receive mbox. + * + * RCVMINUS events say: Your call to to a possibly blocking function is "acknowledged". + * Socket implementation decrements the counter. + * + * For TX, there is no need to count, its merely a flag. SENDPLUS means you may send something. + * SENDPLUS occurs when enough data was delivered to peer so netconn_send() can be called again. + * A SENDMINUS event occurs when the next call to a netconn_send() would be blocking. + */ +enum netconn_evt { + NETCONN_EVT_RCVPLUS, + NETCONN_EVT_RCVMINUS, + NETCONN_EVT_SENDPLUS, + NETCONN_EVT_SENDMINUS, + NETCONN_EVT_ERROR +}; + +#if LWIP_IGMP || (LWIP_IPV6 && LWIP_IPV6_MLD) +/** Used for netconn_join_leave_group() */ +enum netconn_igmp { + NETCONN_JOIN, + NETCONN_LEAVE +}; +#endif /* LWIP_IGMP || (LWIP_IPV6 && LWIP_IPV6_MLD) */ + +#if LWIP_DNS +/* Used for netconn_gethostbyname_addrtype(), these should match the DNS_ADDRTYPE defines in dns.h */ +#define NETCONN_DNS_DEFAULT NETCONN_DNS_IPV4_IPV6 +#define NETCONN_DNS_IPV4 0 +#define NETCONN_DNS_IPV6 1 +#define NETCONN_DNS_IPV4_IPV6 2 /* try to resolve IPv4 first, try IPv6 if IPv4 fails only */ +#define NETCONN_DNS_IPV6_IPV4 3 /* try to resolve IPv6 first, try IPv4 if IPv6 fails only */ +#endif /* LWIP_DNS */ + +/* forward-declare some structs to avoid to include their headers */ +struct ip_pcb; +struct tcp_pcb; +struct udp_pcb; +struct raw_pcb; +struct netconn; +struct api_msg; + +/** A callback prototype to inform about events for a netconn */ +typedef void (* netconn_callback)(struct netconn *, enum netconn_evt, u16_t len); + +/** A netconn descriptor */ +struct netconn { + /** type of the netconn (TCP, UDP or RAW) */ + enum netconn_type type; + /** current state of the netconn */ + enum netconn_state state; + /** the lwIP internal protocol control block */ + union { + struct ip_pcb *ip; + struct tcp_pcb *tcp; + struct udp_pcb *udp; + struct raw_pcb *raw; + } pcb; + /** the last asynchronous unreported error this netconn had */ + err_t pending_err; +#if !LWIP_NETCONN_SEM_PER_THREAD + /** sem that is used to synchronously execute functions in the core context */ + sys_sem_t op_completed; +#endif + /** mbox where received packets are stored until they are fetched + by the netconn application thread (can grow quite big) */ + sys_mbox_t recvmbox; +#if LWIP_TCP + /** mbox where new connections are stored until processed + by the application thread */ + sys_mbox_t acceptmbox; +#endif /* LWIP_TCP */ +#if LWIP_NETCONN_FULLDUPLEX + /** number of threads waiting on an mbox. This is required to unblock + all threads when closing while threads are waiting. */ + int mbox_threads_waiting; +#endif + /** only used for socket layer */ +#if LWIP_SOCKET + int socket; +#endif /* LWIP_SOCKET */ +#if LWIP_SO_SNDTIMEO + /** timeout to wait for sending data (which means enqueueing data for sending + in internal buffers) in milliseconds */ + s32_t send_timeout; +#endif /* LWIP_SO_RCVTIMEO */ +#if LWIP_SO_RCVTIMEO + /** timeout in milliseconds to wait for new data to be received + (or connections to arrive for listening netconns) */ + u32_t recv_timeout; +#endif /* LWIP_SO_RCVTIMEO */ +#if LWIP_SO_RCVBUF + /** maximum amount of bytes queued in recvmbox + not used for TCP: adjust TCP_WND instead! */ + int recv_bufsize; + /** number of bytes currently in recvmbox to be received, + tested against recv_bufsize to limit bytes on recvmbox + for UDP and RAW, used for FIONREAD */ + int recv_avail; +#endif /* LWIP_SO_RCVBUF */ +#if LWIP_SO_LINGER + /** values <0 mean linger is disabled, values > 0 are seconds to linger */ + s16_t linger; +#endif /* LWIP_SO_LINGER */ + /** flags holding more netconn-internal state, see NETCONN_FLAG_* defines */ + u8_t flags; +#if LWIP_TCP + /** TCP: when data passed to netconn_write doesn't fit into the send buffer, + this temporarily stores the message. + Also used during connect and close. */ + struct api_msg *current_msg; +#endif /* LWIP_TCP */ + /** A callback function that is informed about events for this netconn */ + netconn_callback callback; +}; + +/** This vector type is passed to @ref netconn_write_vectors_partly to send + * multiple buffers at once. + * ATTENTION: This type has to directly map struct iovec since one is casted + * into the other! + */ +struct netvector { + /** pointer to the application buffer that contains the data to send */ + const void *ptr; + /** size of the application data to send */ + size_t len; +}; + +/** Register an Network connection event */ +#define API_EVENT(c,e,l) if (c->callback) { \ + (*c->callback)(c, e, l); \ + } + +/* Network connection functions: */ + +/** @ingroup netconn_common + * Create new netconn connection + * @param t @ref netconn_type */ +#define netconn_new(t) netconn_new_with_proto_and_callback(t, 0, NULL) +#define netconn_new_with_callback(t, c) netconn_new_with_proto_and_callback(t, 0, c) +struct netconn *netconn_new_with_proto_and_callback(enum netconn_type t, u8_t proto, + netconn_callback callback); +err_t netconn_prepare_delete(struct netconn *conn); +err_t netconn_delete(struct netconn *conn); +/** Get the type of a netconn (as enum netconn_type). */ +#define netconn_type(conn) (conn->type) + +err_t netconn_getaddr(struct netconn *conn, ip_addr_t *addr, + u16_t *port, u8_t local); +/** @ingroup netconn_common */ +#define netconn_peer(c,i,p) netconn_getaddr(c,i,p,0) +/** @ingroup netconn_common */ +#define netconn_addr(c,i,p) netconn_getaddr(c,i,p,1) + +err_t netconn_bind(struct netconn *conn, const ip_addr_t *addr, u16_t port); +err_t netconn_bind_if(struct netconn *conn, u8_t if_idx); +err_t netconn_connect(struct netconn *conn, const ip_addr_t *addr, u16_t port); +err_t netconn_disconnect (struct netconn *conn); +err_t netconn_listen_with_backlog(struct netconn *conn, u8_t backlog); +/** @ingroup netconn_tcp */ +#define netconn_listen(conn) netconn_listen_with_backlog(conn, TCP_DEFAULT_LISTEN_BACKLOG) +err_t netconn_accept(struct netconn *conn, struct netconn **new_conn); +err_t netconn_recv(struct netconn *conn, struct netbuf **new_buf); +err_t netconn_recv_udp_raw_netbuf(struct netconn *conn, struct netbuf **new_buf); +err_t netconn_recv_udp_raw_netbuf_flags(struct netconn *conn, struct netbuf **new_buf, u8_t apiflags); +err_t netconn_recv_tcp_pbuf(struct netconn *conn, struct pbuf **new_buf); +err_t netconn_recv_tcp_pbuf_flags(struct netconn *conn, struct pbuf **new_buf, u8_t apiflags); +err_t netconn_tcp_recvd(struct netconn *conn, size_t len); +err_t netconn_sendto(struct netconn *conn, struct netbuf *buf, + const ip_addr_t *addr, u16_t port); +err_t netconn_send(struct netconn *conn, struct netbuf *buf); +err_t netconn_write_partly(struct netconn *conn, const void *dataptr, size_t size, + u8_t apiflags, size_t *bytes_written); +err_t netconn_write_vectors_partly(struct netconn *conn, struct netvector *vectors, u16_t vectorcnt, + u8_t apiflags, size_t *bytes_written); +/** @ingroup netconn_tcp */ +#define netconn_write(conn, dataptr, size, apiflags) \ + netconn_write_partly(conn, dataptr, size, apiflags, NULL) +err_t netconn_close(struct netconn *conn); +err_t netconn_shutdown(struct netconn *conn, u8_t shut_rx, u8_t shut_tx); + +#if LWIP_IGMP || (LWIP_IPV6 && LWIP_IPV6_MLD) +err_t netconn_join_leave_group(struct netconn *conn, const ip_addr_t *multiaddr, + const ip_addr_t *netif_addr, enum netconn_igmp join_or_leave); +err_t netconn_join_leave_group_netif(struct netconn *conn, const ip_addr_t *multiaddr, + u8_t if_idx, enum netconn_igmp join_or_leave); +#endif /* LWIP_IGMP || (LWIP_IPV6 && LWIP_IPV6_MLD) */ +#if LWIP_DNS +#if LWIP_IPV4 && LWIP_IPV6 +err_t netconn_gethostbyname_addrtype(const char *name, ip_addr_t *addr, u8_t dns_addrtype); +#define netconn_gethostbyname(name, addr) netconn_gethostbyname_addrtype(name, addr, NETCONN_DNS_DEFAULT) +#else /* LWIP_IPV4 && LWIP_IPV6 */ +err_t netconn_gethostbyname(const char *name, ip_addr_t *addr); +#define netconn_gethostbyname_addrtype(name, addr, dns_addrtype) netconn_gethostbyname(name, addr) +#endif /* LWIP_IPV4 && LWIP_IPV6 */ +#endif /* LWIP_DNS */ + +err_t netconn_err(struct netconn *conn); +#define netconn_recv_bufsize(conn) ((conn)->recv_bufsize) + +#define netconn_set_flags(conn, set_flags) do { (conn)->flags = (u8_t)((conn)->flags | (set_flags)); } while(0) +#define netconn_clear_flags(conn, clr_flags) do { (conn)->flags = (u8_t)((conn)->flags & (u8_t)(~(clr_flags) & 0xff)); } while(0) +#define netconn_is_flag_set(conn, flag) (((conn)->flags & (flag)) != 0) + +/** Set the blocking status of netconn calls (@todo: write/send is missing) */ +#define netconn_set_nonblocking(conn, val) do { if(val) { \ + netconn_set_flags(conn, NETCONN_FLAG_NON_BLOCKING); \ +} else { \ + netconn_clear_flags(conn, NETCONN_FLAG_NON_BLOCKING); }} while(0) +/** Get the blocking status of netconn calls (@todo: write/send is missing) */ +#define netconn_is_nonblocking(conn) (((conn)->flags & NETCONN_FLAG_NON_BLOCKING) != 0) + +#if LWIP_IPV6 +/** @ingroup netconn_common + * TCP: Set the IPv6 ONLY status of netconn calls (see NETCONN_FLAG_IPV6_V6ONLY) + */ +#define netconn_set_ipv6only(conn, val) do { if(val) { \ + netconn_set_flags(conn, NETCONN_FLAG_IPV6_V6ONLY); \ +} else { \ + netconn_clear_flags(conn, NETCONN_FLAG_IPV6_V6ONLY); }} while(0) +/** @ingroup netconn_common + * TCP: Get the IPv6 ONLY status of netconn calls (see NETCONN_FLAG_IPV6_V6ONLY) + */ +#define netconn_get_ipv6only(conn) (((conn)->flags & NETCONN_FLAG_IPV6_V6ONLY) != 0) +#endif /* LWIP_IPV6 */ + +#if LWIP_SO_SNDTIMEO +/** Set the send timeout in milliseconds */ +#define netconn_set_sendtimeout(conn, timeout) ((conn)->send_timeout = (timeout)) +/** Get the send timeout in milliseconds */ +#define netconn_get_sendtimeout(conn) ((conn)->send_timeout) +#endif /* LWIP_SO_SNDTIMEO */ +#if LWIP_SO_RCVTIMEO +/** Set the receive timeout in milliseconds */ +#define netconn_set_recvtimeout(conn, timeout) ((conn)->recv_timeout = (timeout)) +/** Get the receive timeout in milliseconds */ +#define netconn_get_recvtimeout(conn) ((conn)->recv_timeout) +#endif /* LWIP_SO_RCVTIMEO */ +#if LWIP_SO_RCVBUF +/** Set the receive buffer in bytes */ +#define netconn_set_recvbufsize(conn, recvbufsize) ((conn)->recv_bufsize = (recvbufsize)) +/** Get the receive buffer in bytes */ +#define netconn_get_recvbufsize(conn) ((conn)->recv_bufsize) +#endif /* LWIP_SO_RCVBUF*/ + +#if LWIP_NETCONN_SEM_PER_THREAD +void netconn_thread_init(void); +void netconn_thread_cleanup(void); +#else /* LWIP_NETCONN_SEM_PER_THREAD */ +#define netconn_thread_init() +#define netconn_thread_cleanup() +#endif /* LWIP_NETCONN_SEM_PER_THREAD */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_NETCONN || LWIP_SOCKET */ + +#endif /* LWIP_HDR_API_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/FILES b/Other/tun2socks/core/c/include/lwip/apps/FILES new file mode 100644 index 0000000..adfc0f3 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/FILES @@ -0,0 +1,2 @@ +This directory contains application headers. +Every application shall provide one api file APP.h and optionally one options file APP_opts.h diff --git a/Other/tun2socks/core/c/include/lwip/apps/altcp_proxyconnect.h b/Other/tun2socks/core/c/include/lwip/apps/altcp_proxyconnect.h new file mode 100644 index 0000000..65d3127 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/altcp_proxyconnect.h @@ -0,0 +1,79 @@ +/** + * @file + * Application layered TCP connection API that executes a proxy-connect. + * + * This file provides a starting layer that executes a proxy-connect e.g. to + * set up TLS connections through a http proxy. + */ + +/* + * Copyright (c) 2018 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ + +#ifndef LWIP_HDR_APPS_ALTCP_PROXYCONNECT_H +#define LWIP_HDR_APPS_ALTCP_PROXYCONNECT_H + +#include "lwip/opt.h" + +#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/ip_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct altcp_proxyconnect_config { + ip_addr_t proxy_addr; + u16_t proxy_port; +}; + + +struct altcp_pcb *altcp_proxyconnect_new(struct altcp_proxyconnect_config *config, struct altcp_pcb *inner_pcb); +struct altcp_pcb *altcp_proxyconnect_new_tcp(struct altcp_proxyconnect_config *config, u8_t ip_type); + +struct altcp_pcb *altcp_proxyconnect_alloc(void *arg, u8_t ip_type); + +#if LWIP_ALTCP_TLS +struct altcp_proxyconnect_tls_config { + struct altcp_proxyconnect_config proxy; + struct altcp_tls_config *tls_config; +}; + +struct altcp_pcb *altcp_proxyconnect_tls_alloc(void *arg, u8_t ip_type); +#endif /* LWIP_ALTCP_TLS */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_ALTCP */ +#endif /* LWIP_HDR_APPS_ALTCP_PROXYCONNECT_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/altcp_tls_mbedtls_opts.h b/Other/tun2socks/core/c/include/lwip/apps/altcp_tls_mbedtls_opts.h new file mode 100644 index 0000000..36cddd9 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/altcp_tls_mbedtls_opts.h @@ -0,0 +1,67 @@ +/** + * @file + * Application layered TCP/TLS connection API (to be used from TCPIP thread) + * + * This file contains options for an mbedtls port of the TLS layer. + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_ALTCP_TLS_OPTS_H +#define LWIP_HDR_ALTCP_TLS_OPTS_H + +#include "lwip/opt.h" + +#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ + +/** LWIP_ALTCP_TLS_MBEDTLS==1: use mbedTLS for TLS support for altcp API + * mbedtls include directory must be reachable via include search path + */ +#ifndef LWIP_ALTCP_TLS_MBEDTLS +#define LWIP_ALTCP_TLS_MBEDTLS 0 +#endif + +/** Configure debug level of this file */ +#ifndef ALTCP_MBEDTLS_DEBUG +#define ALTCP_MBEDTLS_DEBUG LWIP_DBG_OFF +#endif + +/** Set a session timeout in seconds for the basic session cache + * ATTENTION: Using a session cache can lower security by reusing keys! + */ +#ifndef ALTCP_MBEDTLS_SESSION_CACHE_TIMEOUT_SECONDS +#define ALTCP_MBEDTLS_SESSION_CACHE_TIMEOUT_SECONDS 0 +#endif + +#endif /* LWIP_ALTCP */ + +#endif /* LWIP_HDR_ALTCP_TLS_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/fs.h b/Other/tun2socks/core/c/include/lwip/apps/fs.h new file mode 100644 index 0000000..67b9a60 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/fs.h @@ -0,0 +1,126 @@ +/* + * Copyright (c) 2001-2003 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_APPS_FS_H +#define LWIP_HDR_APPS_FS_H + +#include "httpd_opts.h" +#include "lwip/err.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define FS_READ_EOF -1 +#define FS_READ_DELAYED -2 + +#if HTTPD_PRECALCULATED_CHECKSUM +struct fsdata_chksum { + u32_t offset; + u16_t chksum; + u16_t len; +}; +#endif /* HTTPD_PRECALCULATED_CHECKSUM */ + +#define FS_FILE_FLAGS_HEADER_INCLUDED 0x01 +#define FS_FILE_FLAGS_HEADER_PERSISTENT 0x02 +#define FS_FILE_FLAGS_HEADER_HTTPVER_1_1 0x04 +#define FS_FILE_FLAGS_SSI 0x08 + +/** Define FS_FILE_EXTENSION_T_DEFINED if you have typedef'ed to your private + * pointer type (defaults to 'void' so the default usage is 'void*') + */ +#ifndef FS_FILE_EXTENSION_T_DEFINED +typedef void fs_file_extension; +#endif + +struct fs_file { + const char *data; + int len; + int index; + /* pextension is free for implementations to hold private (extensional) + arbitrary data, e.g. holding some file state or file system handle */ + fs_file_extension *pextension; +#if HTTPD_PRECALCULATED_CHECKSUM + const struct fsdata_chksum *chksum; + u16_t chksum_count; +#endif /* HTTPD_PRECALCULATED_CHECKSUM */ + u8_t flags; +#if LWIP_HTTPD_CUSTOM_FILES + u8_t is_custom_file; +#endif /* LWIP_HTTPD_CUSTOM_FILES */ +#if LWIP_HTTPD_FILE_STATE + void *state; +#endif /* LWIP_HTTPD_FILE_STATE */ +}; + +#if LWIP_HTTPD_FS_ASYNC_READ +typedef void (*fs_wait_cb)(void *arg); +#endif /* LWIP_HTTPD_FS_ASYNC_READ */ + +err_t fs_open(struct fs_file *file, const char *name); +void fs_close(struct fs_file *file); +#if LWIP_HTTPD_DYNAMIC_FILE_READ +#if LWIP_HTTPD_FS_ASYNC_READ +int fs_read_async(struct fs_file *file, char *buffer, int count, fs_wait_cb callback_fn, void *callback_arg); +#else /* LWIP_HTTPD_FS_ASYNC_READ */ +int fs_read(struct fs_file *file, char *buffer, int count); +#endif /* LWIP_HTTPD_FS_ASYNC_READ */ +#endif /* LWIP_HTTPD_DYNAMIC_FILE_READ */ +#if LWIP_HTTPD_FS_ASYNC_READ +int fs_is_file_ready(struct fs_file *file, fs_wait_cb callback_fn, void *callback_arg); +#endif /* LWIP_HTTPD_FS_ASYNC_READ */ +int fs_bytes_left(struct fs_file *file); + +#if LWIP_HTTPD_FILE_STATE +/** This user-defined function is called when a file is opened. */ +void *fs_state_init(struct fs_file *file, const char *name); +/** This user-defined function is called when a file is closed. */ +void fs_state_free(struct fs_file *file, void *state); +#endif /* #if LWIP_HTTPD_FILE_STATE */ + +struct fsdata_file { + const struct fsdata_file *next; + const unsigned char *name; + const unsigned char *data; + int len; + u8_t flags; +#if HTTPD_PRECALCULATED_CHECKSUM + u16_t chksum_count; + const struct fsdata_chksum *chksum; +#endif /* HTTPD_PRECALCULATED_CHECKSUM */ +}; + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_FS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/http_client.h b/Other/tun2socks/core/c/include/lwip/apps/http_client.h new file mode 100644 index 0000000..8a06308 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/http_client.h @@ -0,0 +1,160 @@ +/** + * @file + * HTTP client + */ + +/* + * Copyright (c) 2018 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ + +#ifndef LWIP_HDR_APPS_HTTP_CLIENT_H +#define LWIP_HDR_APPS_HTTP_CLIENT_H + +#include "lwip/opt.h" +#include "lwip/ip_addr.h" +#include "lwip/err.h" +#include "lwip/altcp.h" +#include "lwip/prot/iana.h" +#include "lwip/pbuf.h" + +#if LWIP_TCP && LWIP_CALLBACK_API + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @ingroup httpc + * HTTPC_HAVE_FILE_IO: define this to 1 to have functions dowloading directly + * to disk via fopen/fwrite. + * These functions are example implementations of the interface only. + */ +#ifndef LWIP_HTTPC_HAVE_FILE_IO +#define LWIP_HTTPC_HAVE_FILE_IO 0 +#endif + +/** + * @ingroup httpc + * The default TCP port used for HTTP + */ +#define HTTP_DEFAULT_PORT LWIP_IANA_PORT_HTTP + +/** + * @ingroup httpc + * HTTP client result codes + */ +typedef enum ehttpc_result { + /** File successfully received */ + HTTPC_RESULT_OK = 0, + /** Unknown error */ + HTTPC_RESULT_ERR_UNKNOWN = 1, + /** Connection to server failed */ + HTTPC_RESULT_ERR_CONNECT = 2, + /** Failed to resolve server hostname */ + HTTPC_RESULT_ERR_HOSTNAME = 3, + /** Connection unexpectedly closed by remote server */ + HTTPC_RESULT_ERR_CLOSED = 4, + /** Connection timed out (server didn't respond in time) */ + HTTPC_RESULT_ERR_TIMEOUT = 5, + /** Server responded with an error code */ + HTTPC_RESULT_ERR_SVR_RESP = 6, + /** Local memory error */ + HTTPC_RESULT_ERR_MEM = 7, + /** Local abort */ + HTTPC_RESULT_LOCAL_ABORT = 8, + /** Content length mismatch */ + HTTPC_RESULT_ERR_CONTENT_LEN = 9 +} httpc_result_t; + +typedef struct _httpc_state httpc_state_t; + +/** + * @ingroup httpc + * Prototype of a http client callback function + * + * @param arg argument specified when initiating the request + * @param httpc_result result of the http transfer (see enum httpc_result_t) + * @param rx_content_len number of bytes received (without headers) + * @param srv_res this contains the http status code received (if any) + * @param err an error returned by internal lwip functions, can help to specify + * the source of the error but must not necessarily be != ERR_OK + */ +typedef void (*httpc_result_fn)(void *arg, httpc_result_t httpc_result, u32_t rx_content_len, u32_t srv_res, err_t err); + +/** + * @ingroup httpc + * Prototype of http client callback: called when the headers are received + * + * @param connection http client connection + * @param arg argument specified when initiating the request + * @param hdr header pbuf(s) (may contain data also) + * @param hdr_len length of the heders in 'hdr' + * @param content_len content length as received in the headers (-1 if not received) + * @return if != ERR_OK is returned, the connection is aborted + */ +typedef err_t (*httpc_headers_done_fn)(httpc_state_t *connection, void *arg, struct pbuf *hdr, u16_t hdr_len, u32_t content_len); + +typedef struct _httpc_connection { + ip_addr_t proxy_addr; + u16_t proxy_port; + u8_t use_proxy; + /* @todo: add username:pass? */ + +#if LWIP_ALTCP + altcp_allocator_t *altcp_allocator; +#endif + + /* this callback is called when the transfer is finished (or aborted) */ + httpc_result_fn result_fn; + /* this callback is called after receiving the http headers + It can abort the connection by returning != ERR_OK */ + httpc_headers_done_fn headers_done_fn; +} httpc_connection_t; + +err_t httpc_get_file(const ip_addr_t* server_addr, u16_t port, const char* uri, const httpc_connection_t *settings, + altcp_recv_fn recv_fn, void* callback_arg, httpc_state_t **connection); +err_t httpc_get_file_dns(const char* server_name, u16_t port, const char* uri, const httpc_connection_t *settings, + altcp_recv_fn recv_fn, void* callback_arg, httpc_state_t **connection); + +#if LWIP_HTTPC_HAVE_FILE_IO +err_t httpc_get_file_to_disk(const ip_addr_t* server_addr, u16_t port, const char* uri, const httpc_connection_t *settings, + void* callback_arg, const char* local_file_name, httpc_state_t **connection); +err_t httpc_get_file_dns_to_disk(const char* server_name, u16_t port, const char* uri, const httpc_connection_t *settings, + void* callback_arg, const char* local_file_name, httpc_state_t **connection); +#endif /* LWIP_HTTPC_HAVE_FILE_IO */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_TCP && LWIP_CALLBACK_API */ + +#endif /* LWIP_HDR_APPS_HTTP_CLIENT_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/httpd.h b/Other/tun2socks/core/c/include/lwip/apps/httpd.h new file mode 100644 index 0000000..e872429 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/httpd.h @@ -0,0 +1,255 @@ +/** + * @file + * HTTP server + */ + +/* + * Copyright (c) 2001-2003 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + * This version of the file has been modified by Texas Instruments to offer + * simple server-side-include (SSI) and Common Gateway Interface (CGI) + * capability. + */ + +#ifndef LWIP_HDR_APPS_HTTPD_H +#define LWIP_HDR_APPS_HTTPD_H + +#include "httpd_opts.h" +#include "lwip/err.h" +#include "lwip/pbuf.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_HTTPD_CGI + +/** + * @ingroup httpd + * Function pointer for a CGI script handler. + * + * This function is called each time the HTTPD server is asked for a file + * whose name was previously registered as a CGI function using a call to + * http_set_cgi_handlers. The iIndex parameter provides the index of the + * CGI within the cgis array passed to http_set_cgi_handlers. Parameters + * pcParam and pcValue provide access to the parameters provided along with + * the URI. iNumParams provides a count of the entries in the pcParam and + * pcValue arrays. Each entry in the pcParam array contains the name of a + * parameter with the corresponding entry in the pcValue array containing the + * value for that parameter. Note that pcParam may contain multiple elements + * with the same name if, for example, a multi-selection list control is used + * in the form generating the data. + * + * The function should return a pointer to a character string which is the + * path and filename of the response that is to be sent to the connected + * browser, for example "/thanks.htm" or "/response/error.ssi". + * + * The maximum number of parameters that will be passed to this function via + * iNumParams is defined by LWIP_HTTPD_MAX_CGI_PARAMETERS. Any parameters in + * the incoming HTTP request above this number will be discarded. + * + * Requests intended for use by this CGI mechanism must be sent using the GET + * method (which encodes all parameters within the URI rather than in a block + * later in the request). Attempts to use the POST method will result in the + * request being ignored. + * + */ +typedef const char *(*tCGIHandler)(int iIndex, int iNumParams, char *pcParam[], + char *pcValue[]); + +/** + * @ingroup httpd + * Structure defining the base filename (URL) of a CGI and the associated + * function which is to be called when that URL is requested. + */ +typedef struct +{ + const char *pcCGIName; + tCGIHandler pfnCGIHandler; +} tCGI; + +void http_set_cgi_handlers(const tCGI *pCGIs, int iNumHandlers); + +#endif /* LWIP_HTTPD_CGI */ + +#if LWIP_HTTPD_CGI || LWIP_HTTPD_CGI_SSI + +#if LWIP_HTTPD_CGI_SSI +/* we have to prototype this struct here to make it available for the handler */ +struct fs_file; + +/** Define this generic CGI handler in your application. + * It is called once for every URI with parameters. + * The parameters can be stored to the object passed as connection_state, which + * is allocated to file->state via fs_state_init() from fs_open() or fs_open_custom(). + * Content creation via SSI or complete dynamic files can retrieve the CGI params from there. + */ +extern void httpd_cgi_handler(struct fs_file *file, const char* uri, int iNumParams, + char **pcParam, char **pcValue +#if defined(LWIP_HTTPD_FILE_STATE) && LWIP_HTTPD_FILE_STATE + , void *connection_state +#endif /* LWIP_HTTPD_FILE_STATE */ + ); +#endif /* LWIP_HTTPD_CGI_SSI */ + +#endif /* LWIP_HTTPD_CGI || LWIP_HTTPD_CGI_SSI */ + +#if LWIP_HTTPD_SSI + +/** + * @ingroup httpd + * Function pointer for the SSI tag handler callback. + * + * This function will be called each time the HTTPD server detects a tag of the + * form in files with extensions mentioned in the g_pcSSIExtensions + * array (currently .shtml, .shtm, .ssi, .xml, .json) where "name" appears as + * one of the tags supplied to http_set_ssi_handler in the tags array. The + * returned insert string, which will be appended after the the string + * "" in file sent back to the client, should be written to pointer + * pcInsert. iInsertLen contains the size of the buffer pointed to by + * pcInsert. The iIndex parameter provides the zero-based index of the tag as + * found in the tags array and identifies the tag that is to be processed. + * + * The handler returns the number of characters written to pcInsert excluding + * any terminating NULL or HTTPD_SSI_TAG_UNKNOWN when tag is not recognized. + * + * Note that the behavior of this SSI mechanism is somewhat different from the + * "normal" SSI processing as found in, for example, the Apache web server. In + * this case, the inserted text is appended following the SSI tag rather than + * replacing the tag entirely. This allows for an implementation that does not + * require significant additional buffering of output data yet which will still + * offer usable SSI functionality. One downside to this approach is when + * attempting to use SSI within JavaScript. The SSI tag is structured to + * resemble an HTML comment but this syntax does not constitute a comment + * within JavaScript and, hence, leaving the tag in place will result in + * problems in these cases. In order to avoid these problems, define + * LWIP_HTTPD_SSI_INCLUDE_TAG as zero in your lwip options file, or use JavaScript + * style block comments in the form / * # name * / (without the spaces). + */ +typedef u16_t (*tSSIHandler)( +#if LWIP_HTTPD_SSI_RAW + const char* ssi_tag_name, +#else /* LWIP_HTTPD_SSI_RAW */ + int iIndex, +#endif /* LWIP_HTTPD_SSI_RAW */ + char *pcInsert, int iInsertLen +#if LWIP_HTTPD_SSI_MULTIPART + , u16_t current_tag_part, u16_t *next_tag_part +#endif /* LWIP_HTTPD_SSI_MULTIPART */ +#if defined(LWIP_HTTPD_FILE_STATE) && LWIP_HTTPD_FILE_STATE + , void *connection_state +#endif /* LWIP_HTTPD_FILE_STATE */ + ); + +/** Set the SSI handler function + * (if LWIP_HTTPD_SSI_RAW==1, only the first argument is used) + */ +void http_set_ssi_handler(tSSIHandler pfnSSIHandler, + const char **ppcTags, int iNumTags); + +/** For LWIP_HTTPD_SSI_RAW==1, return this to indicate the tag is unknown. + * In this case, the webserver writes a warning into the page. + * You can also just return 0 to write nothing for unknown tags. + */ +#define HTTPD_SSI_TAG_UNKNOWN 0xFFFF + +#endif /* LWIP_HTTPD_SSI */ + +#if LWIP_HTTPD_SUPPORT_POST + +/* These functions must be implemented by the application */ + +/** + * @ingroup httpd + * Called when a POST request has been received. The application can decide + * whether to accept it or not. + * + * @param connection Unique connection identifier, valid until httpd_post_end + * is called. + * @param uri The HTTP header URI receiving the POST request. + * @param http_request The raw HTTP request (the first packet, normally). + * @param http_request_len Size of 'http_request'. + * @param content_len Content-Length from HTTP header. + * @param response_uri Filename of response file, to be filled when denying the + * request + * @param response_uri_len Size of the 'response_uri' buffer. + * @param post_auto_wnd Set this to 0 to let the callback code handle window + * updates by calling 'httpd_post_data_recved' (to throttle rx speed) + * default is 1 (httpd handles window updates automatically) + * @return ERR_OK: Accept the POST request, data may be passed in + * another err_t: Deny the POST request, send back 'bad request'. + */ +err_t httpd_post_begin(void *connection, const char *uri, const char *http_request, + u16_t http_request_len, int content_len, char *response_uri, + u16_t response_uri_len, u8_t *post_auto_wnd); + +/** + * @ingroup httpd + * Called for each pbuf of data that has been received for a POST. + * ATTENTION: The application is responsible for freeing the pbufs passed in! + * + * @param connection Unique connection identifier. + * @param p Received data. + * @return ERR_OK: Data accepted. + * another err_t: Data denied, http_post_get_response_uri will be called. + */ +err_t httpd_post_receive_data(void *connection, struct pbuf *p); + +/** + * @ingroup httpd + * Called when all data is received or when the connection is closed. + * The application must return the filename/URI of a file to send in response + * to this POST request. If the response_uri buffer is untouched, a 404 + * response is returned. + * + * @param connection Unique connection identifier. + * @param response_uri Filename of response file, to be filled when denying the request + * @param response_uri_len Size of the 'response_uri' buffer. + */ +void httpd_post_finished(void *connection, char *response_uri, u16_t response_uri_len); + +#if LWIP_HTTPD_POST_MANUAL_WND +void httpd_post_data_recved(void *connection, u16_t recved_len); +#endif /* LWIP_HTTPD_POST_MANUAL_WND */ + +#endif /* LWIP_HTTPD_SUPPORT_POST */ + +void httpd_init(void); + +#if HTTPD_ENABLE_HTTPS +struct altcp_tls_config; +void httpd_inits(struct altcp_tls_config *conf); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_HTTPD_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/httpd_opts.h b/Other/tun2socks/core/c/include/lwip/apps/httpd_opts.h new file mode 100644 index 0000000..8723961 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/httpd_opts.h @@ -0,0 +1,396 @@ +/** + * @file + * HTTP server options list + */ + +/* + * Copyright (c) 2001-2003 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + * This version of the file has been modified by Texas Instruments to offer + * simple server-side-include (SSI) and Common Gateway Interface (CGI) + * capability. + */ + +#ifndef LWIP_HDR_APPS_HTTPD_OPTS_H +#define LWIP_HDR_APPS_HTTPD_OPTS_H + +#include "lwip/opt.h" +#include "lwip/prot/iana.h" + +/** + * @defgroup httpd_opts Options + * @ingroup httpd + * @{ + */ + +/** Set this to 1 to support CGI (old style). + * + * This old style CGI support works by registering an array of URLs and + * associated CGI handler functions (@ref http_set_cgi_handlers). + * This list is scanned just before fs_open is called from request handling. + * The handler can return a new URL that is used internally by the httpd to + * load the returned page (passed to fs_open). + * + * Use this CGI type e.g. to execute specific actions and return a page that + * does not depend on the CGI parameters. + */ +#if !defined LWIP_HTTPD_CGI || defined __DOXYGEN__ +#define LWIP_HTTPD_CGI 0 +#endif + +/** Set this to 1 to support CGI (new style). + * + * This new style CGI support works by calling a global function + * (@ref tCGIHandler) for all URLs that are found. fs_open is called first + * and the URL can not be written by the CGI handler. Instead, this handler gets + * passed the http file state, an object where it can store information derived + * from the CGI URL or parameters. This file state is later passed to SSI, so + * the SSI code can return data depending on CGI input. + * + * Use this CGI handler if you want CGI information passed on to SSI. + */ +#if !defined LWIP_HTTPD_CGI_SSI || defined __DOXYGEN__ +#define LWIP_HTTPD_CGI_SSI 0 +#endif + +/** Set this to 1 to support SSI (Server-Side-Includes) + * + * In contrast to other http servers, this only calls a preregistered callback + * function (@see http_set_ssi_handler) for each tag (in the format of + * ) encountered in SSI-enabled pages. + * SSI-enabled pages must have one of the predefined SSI-enabled file extensions. + * All files with one of these extensions are parsed when sent. + * + * A downside of the current SSI implementation is that persistent connections + * don't work, as the file length is not known in advance (and httpd currently + * relies on the Content-Length header for persistent connections). + * + * To save memory, the maximum tag length is limited (@see LWIP_HTTPD_MAX_TAG_NAME_LEN). + * To save memory, the maximum insertion string length is limited (@see + * LWIP_HTTPD_MAX_TAG_INSERT_LEN). If this is not enought, @ref LWIP_HTTPD_SSI_MULTIPART + * can be used. + */ +#if !defined LWIP_HTTPD_SSI || defined __DOXYGEN__ +#define LWIP_HTTPD_SSI 0 +#endif + +/** Set this to 1 to implement an SSI tag handler callback that gets a const char* + * to the tag (instead of an index into a pre-registered array of known tags) + * If this is 0, the SSI handler callback function is only called pre-registered tags. + */ +#if !defined LWIP_HTTPD_SSI_RAW || defined __DOXYGEN__ +#define LWIP_HTTPD_SSI_RAW 0 +#endif + +/** Set this to 0 to prevent parsing the file extension at runtime to decide + * if a file should be scanned for SSI tags or not. + * Default is 1 (file extensions are checked using the g_pcSSIExtensions array) + * Set to 2 to override this runtime test function. + * + * This is enabled by default, but if you only use a newer version of makefsdata + * supporting the "-ssi" option, this info is already present in + */ +#if !defined LWIP_HTTPD_SSI_BY_FILE_EXTENSION || defined __DOXYGEN__ +#define LWIP_HTTPD_SSI_BY_FILE_EXTENSION 1 +#endif + +/** Set this to 1 to support HTTP POST */ +#if !defined LWIP_HTTPD_SUPPORT_POST || defined __DOXYGEN__ +#define LWIP_HTTPD_SUPPORT_POST 0 +#endif + +/* The maximum number of parameters that the CGI handler can be sent. */ +#if !defined LWIP_HTTPD_MAX_CGI_PARAMETERS || defined __DOXYGEN__ +#define LWIP_HTTPD_MAX_CGI_PARAMETERS 16 +#endif + +/** LWIP_HTTPD_SSI_MULTIPART==1: SSI handler function is called with 2 more + * arguments indicating a counter for insert string that are too long to be + * inserted at once: the SSI handler function must then set 'next_tag_part' + * which will be passed back to it in the next call. */ +#if !defined LWIP_HTTPD_SSI_MULTIPART || defined __DOXYGEN__ +#define LWIP_HTTPD_SSI_MULTIPART 0 +#endif + +/* The maximum length of the string comprising the SSI tag name + * ATTENTION: tags longer than this are ignored, not truncated! + */ +#if !defined LWIP_HTTPD_MAX_TAG_NAME_LEN || defined __DOXYGEN__ +#define LWIP_HTTPD_MAX_TAG_NAME_LEN 8 +#endif + +/* The maximum length of string that can be returned to replace any given tag + * If this buffer is not long enough, use LWIP_HTTPD_SSI_MULTIPART. + */ +#if !defined LWIP_HTTPD_MAX_TAG_INSERT_LEN || defined __DOXYGEN__ +#define LWIP_HTTPD_MAX_TAG_INSERT_LEN 192 +#endif + +#if !defined LWIP_HTTPD_POST_MANUAL_WND || defined __DOXYGEN__ +#define LWIP_HTTPD_POST_MANUAL_WND 0 +#endif + +/** This string is passed in the HTTP header as "Server: " */ +#if !defined HTTPD_SERVER_AGENT || defined __DOXYGEN__ +#define HTTPD_SERVER_AGENT "lwIP/" LWIP_VERSION_STRING " (http://savannah.nongnu.org/projects/lwip)" +#endif + +/** Set this to 1 if you want to include code that creates HTTP headers + * at runtime. Default is off: HTTP headers are then created statically + * by the makefsdata tool. Static headers mean smaller code size, but + * the (readonly) fsdata will grow a bit as every file includes the HTTP + * header. */ +#if !defined LWIP_HTTPD_DYNAMIC_HEADERS || defined __DOXYGEN__ +#define LWIP_HTTPD_DYNAMIC_HEADERS 0 +#endif + +#if !defined HTTPD_DEBUG || defined __DOXYGEN__ +#define HTTPD_DEBUG LWIP_DBG_OFF +#endif + +/** Set this to 1 to use a memp pool for allocating + * struct http_state instead of the heap. + * If enabled, you'll need to define MEMP_NUM_PARALLEL_HTTPD_CONNS + * (and MEMP_NUM_PARALLEL_HTTPD_SSI_CONNS for SSI) to set the size of + * the pool(s). + */ +#if !defined HTTPD_USE_MEM_POOL || defined __DOXYGEN__ +#define HTTPD_USE_MEM_POOL 0 +#endif + +/** The server port for HTTPD to use */ +#if !defined HTTPD_SERVER_PORT || defined __DOXYGEN__ +#define HTTPD_SERVER_PORT LWIP_IANA_PORT_HTTP +#endif + +/** The https server port for HTTPD to use */ +#if !defined HTTPD_SERVER_PORT_HTTPS || defined __DOXYGEN__ +#define HTTPD_SERVER_PORT_HTTPS LWIP_IANA_PORT_HTTPS +#endif + +/** Enable https support? */ +#if !defined HTTPD_ENABLE_HTTPS || defined __DOXYGEN__ +#define HTTPD_ENABLE_HTTPS 0 +#endif + +/** Maximum retries before the connection is aborted/closed. + * - number of times pcb->poll is called -> default is 4*500ms = 2s; + * - reset when pcb->sent is called + */ +#if !defined HTTPD_MAX_RETRIES || defined __DOXYGEN__ +#define HTTPD_MAX_RETRIES 4 +#endif + +/** The poll delay is X*500ms */ +#if !defined HTTPD_POLL_INTERVAL || defined __DOXYGEN__ +#define HTTPD_POLL_INTERVAL 4 +#endif + +/** Priority for tcp pcbs created by HTTPD (very low by default). + * Lower priorities get killed first when running out of memory. + */ +#if !defined HTTPD_TCP_PRIO || defined __DOXYGEN__ +#define HTTPD_TCP_PRIO TCP_PRIO_MIN +#endif + +/** Set this to 1 to enable timing each file sent */ +#if !defined LWIP_HTTPD_TIMING || defined __DOXYGEN__ +#define LWIP_HTTPD_TIMING 0 +#endif +/** Set this to 1 to enable timing each file sent */ +#if !defined HTTPD_DEBUG_TIMING || defined __DOXYGEN__ +#define HTTPD_DEBUG_TIMING LWIP_DBG_OFF +#endif + +/** Set this to one to show error pages when parsing a request fails instead + of simply closing the connection. */ +#if !defined LWIP_HTTPD_SUPPORT_EXTSTATUS || defined __DOXYGEN__ +#define LWIP_HTTPD_SUPPORT_EXTSTATUS 0 +#endif + +/** Set this to 0 to drop support for HTTP/0.9 clients (to save some bytes) */ +#if !defined LWIP_HTTPD_SUPPORT_V09 || defined __DOXYGEN__ +#define LWIP_HTTPD_SUPPORT_V09 1 +#endif + +/** Set this to 1 to enable HTTP/1.1 persistent connections. + * ATTENTION: If the generated file system includes HTTP headers, these must + * include the "Connection: keep-alive" header (pass argument "-11" to makefsdata). + */ +#if !defined LWIP_HTTPD_SUPPORT_11_KEEPALIVE || defined __DOXYGEN__ +#define LWIP_HTTPD_SUPPORT_11_KEEPALIVE 0 +#endif + +/** Set this to 1 to support HTTP request coming in in multiple packets/pbufs */ +#if !defined LWIP_HTTPD_SUPPORT_REQUESTLIST || defined __DOXYGEN__ +#define LWIP_HTTPD_SUPPORT_REQUESTLIST 1 +#endif + +#if LWIP_HTTPD_SUPPORT_REQUESTLIST +/** Number of rx pbufs to enqueue to parse an incoming request (up to the first + newline) */ +#if !defined LWIP_HTTPD_REQ_QUEUELEN || defined __DOXYGEN__ +#define LWIP_HTTPD_REQ_QUEUELEN 5 +#endif + +/** Number of (TCP payload-) bytes (in pbufs) to enqueue to parse and incoming + request (up to the first double-newline) */ +#if !defined LWIP_HTTPD_REQ_BUFSIZE || defined __DOXYGEN__ +#define LWIP_HTTPD_REQ_BUFSIZE LWIP_HTTPD_MAX_REQ_LENGTH +#endif + +/** Defines the maximum length of a HTTP request line (up to the first CRLF, + copied from pbuf into this a global buffer when pbuf- or packet-queues + are received - otherwise the input pbuf is used directly) */ +#if !defined LWIP_HTTPD_MAX_REQ_LENGTH || defined __DOXYGEN__ +#define LWIP_HTTPD_MAX_REQ_LENGTH LWIP_MIN(1023, (LWIP_HTTPD_REQ_QUEUELEN * PBUF_POOL_BUFSIZE)) +#endif +#endif /* LWIP_HTTPD_SUPPORT_REQUESTLIST */ + +/** This is the size of a static buffer used when URIs end with '/'. + * In this buffer, the directory requested is concatenated with all the + * configured default file names. + * Set to 0 to disable checking default filenames on non-root directories. + */ +#if !defined LWIP_HTTPD_MAX_REQUEST_URI_LEN || defined __DOXYGEN__ +#define LWIP_HTTPD_MAX_REQUEST_URI_LEN 63 +#endif + +/** Maximum length of the filename to send as response to a POST request, + * filled in by the application when a POST is finished. + */ +#if !defined LWIP_HTTPD_POST_MAX_RESPONSE_URI_LEN || defined __DOXYGEN__ +#define LWIP_HTTPD_POST_MAX_RESPONSE_URI_LEN 63 +#endif + +/** Set this to 0 to not send the SSI tag (default is on, so the tag will + * be sent in the HTML page */ +#if !defined LWIP_HTTPD_SSI_INCLUDE_TAG || defined __DOXYGEN__ +#define LWIP_HTTPD_SSI_INCLUDE_TAG 1 +#endif + +/** Set this to 1 to call tcp_abort when tcp_close fails with memory error. + * This can be used to prevent consuming all memory in situations where the + * HTTP server has low priority compared to other communication. */ +#if !defined LWIP_HTTPD_ABORT_ON_CLOSE_MEM_ERROR || defined __DOXYGEN__ +#define LWIP_HTTPD_ABORT_ON_CLOSE_MEM_ERROR 0 +#endif + +/** Set this to 1 to kill the oldest connection when running out of + * memory for 'struct http_state' or 'struct http_ssi_state'. + * ATTENTION: This puts all connections on a linked list, so may be kind of slow. + */ +#if !defined LWIP_HTTPD_KILL_OLD_ON_CONNECTIONS_EXCEEDED || defined __DOXYGEN__ +#define LWIP_HTTPD_KILL_OLD_ON_CONNECTIONS_EXCEEDED 0 +#endif + +/** Set this to 1 to send URIs without extension without headers + * (who uses this at all??) */ +#if !defined LWIP_HTTPD_OMIT_HEADER_FOR_EXTENSIONLESS_URI || defined __DOXYGEN__ +#define LWIP_HTTPD_OMIT_HEADER_FOR_EXTENSIONLESS_URI 0 +#endif + +/** Default: Tags are sent from struct http_state and are therefore volatile */ +#if !defined HTTP_IS_TAG_VOLATILE || defined __DOXYGEN__ +#define HTTP_IS_TAG_VOLATILE(ptr) TCP_WRITE_FLAG_COPY +#endif + +/* By default, the httpd is limited to send 2*pcb->mss to keep resource usage low + when http is not an important protocol in the device. */ +#if !defined HTTPD_LIMIT_SENDING_TO_2MSS || defined __DOXYGEN__ +#define HTTPD_LIMIT_SENDING_TO_2MSS 1 +#endif + +/* Define this to a function that returns the maximum amount of data to enqueue. + The function have this signature: u16_t fn(struct altcp_pcb* pcb); + The best place to define this is the hooks file (@see LWIP_HOOK_FILENAME) */ +#if !defined HTTPD_MAX_WRITE_LEN || defined __DOXYGEN__ +#if HTTPD_LIMIT_SENDING_TO_2MSS +#define HTTPD_MAX_WRITE_LEN(pcb) ((u16_t)(2 * altcp_mss(pcb))) +#endif +#endif + +/*------------------- FS OPTIONS -------------------*/ + +/** Set this to 1 and provide the functions: + * - "int fs_open_custom(struct fs_file *file, const char *name)" + * Called first for every opened file to allow opening files + * that are not included in fsdata(_custom).c + * - "void fs_close_custom(struct fs_file *file)" + * Called to free resources allocated by fs_open_custom(). + */ +#if !defined LWIP_HTTPD_CUSTOM_FILES || defined __DOXYGEN__ +#define LWIP_HTTPD_CUSTOM_FILES 0 +#endif + +/** Set this to 1 to support fs_read() to dynamically read file data. + * Without this (default=off), only one-block files are supported, + * and the contents must be ready after fs_open(). + */ +#if !defined LWIP_HTTPD_DYNAMIC_FILE_READ || defined __DOXYGEN__ +#define LWIP_HTTPD_DYNAMIC_FILE_READ 0 +#endif + +/** Set this to 1 to include an application state argument per file + * that is opened. This allows to keep a state per connection/file. + */ +#if !defined LWIP_HTTPD_FILE_STATE || defined __DOXYGEN__ +#define LWIP_HTTPD_FILE_STATE 0 +#endif + +/** HTTPD_PRECALCULATED_CHECKSUM==1: include precompiled checksums for + * predefined (MSS-sized) chunks of the files to prevent having to calculate + * the checksums at runtime. */ +#if !defined HTTPD_PRECALCULATED_CHECKSUM || defined __DOXYGEN__ +#define HTTPD_PRECALCULATED_CHECKSUM 0 +#endif + +/** LWIP_HTTPD_FS_ASYNC_READ==1: support asynchronous read operations + * (fs_read_async returns FS_READ_DELAYED and calls a callback when finished). + */ +#if !defined LWIP_HTTPD_FS_ASYNC_READ || defined __DOXYGEN__ +#define LWIP_HTTPD_FS_ASYNC_READ 0 +#endif + +/** Filename (including path) to use as FS data file */ +#if !defined HTTPD_FSDATA_FILE || defined __DOXYGEN__ +/* HTTPD_USE_CUSTOM_FSDATA: Compatibility with deprecated lwIP option */ +#if defined(HTTPD_USE_CUSTOM_FSDATA) && (HTTPD_USE_CUSTOM_FSDATA != 0) +#define HTTPD_FSDATA_FILE "fsdata_custom.c" +#else +#define HTTPD_FSDATA_FILE "fsdata.c" +#endif +#endif + +/** + * @} + */ + +#endif /* LWIP_HDR_APPS_HTTPD_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/lwiperf.h b/Other/tun2socks/core/c/include/lwip/apps/lwiperf.h new file mode 100644 index 0000000..cc86e7f --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/lwiperf.h @@ -0,0 +1,100 @@ +/** + * @file + * lwIP iPerf server implementation + */ + +/* + * Copyright (c) 2014 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_APPS_LWIPERF_H +#define LWIP_HDR_APPS_LWIPERF_H + +#include "lwip/opt.h" +#include "lwip/ip_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define LWIPERF_TCP_PORT_DEFAULT 5001 + +/** lwIPerf test results */ +enum lwiperf_report_type +{ + /** The server side test is done */ + LWIPERF_TCP_DONE_SERVER, + /** The client side test is done */ + LWIPERF_TCP_DONE_CLIENT, + /** Local error lead to test abort */ + LWIPERF_TCP_ABORTED_LOCAL, + /** Data check error lead to test abort */ + LWIPERF_TCP_ABORTED_LOCAL_DATAERROR, + /** Transmit error lead to test abort */ + LWIPERF_TCP_ABORTED_LOCAL_TXERROR, + /** Remote side aborted the test */ + LWIPERF_TCP_ABORTED_REMOTE +}; + +/** Control */ +enum lwiperf_client_type +{ + /** Unidirectional tx only test */ + LWIPERF_CLIENT, + /** Do a bidirectional test simultaneously */ + LWIPERF_DUAL, + /** Do a bidirectional test individually */ + LWIPERF_TRADEOFF +}; + +/** Prototype of a report function that is called when a session is finished. + This report function can show the test results. + @param report_type contains the test result */ +typedef void (*lwiperf_report_fn)(void *arg, enum lwiperf_report_type report_type, + const ip_addr_t* local_addr, u16_t local_port, const ip_addr_t* remote_addr, u16_t remote_port, + u32_t bytes_transferred, u32_t ms_duration, u32_t bandwidth_kbitpsec); + +void* lwiperf_start_tcp_server(const ip_addr_t* local_addr, u16_t local_port, + lwiperf_report_fn report_fn, void* report_arg); +void* lwiperf_start_tcp_server_default(lwiperf_report_fn report_fn, void* report_arg); +void* lwiperf_start_tcp_client(const ip_addr_t* remote_addr, u16_t remote_port, + enum lwiperf_client_type type, + lwiperf_report_fn report_fn, void* report_arg); +void* lwiperf_start_tcp_client_default(const ip_addr_t* remote_addr, + lwiperf_report_fn report_fn, void* report_arg); + +void lwiperf_abort(void* lwiperf_session); + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_LWIPERF_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/mdns.h b/Other/tun2socks/core/c/include/lwip/apps/mdns.h new file mode 100644 index 0000000..20d7ee2 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/mdns.h @@ -0,0 +1,105 @@ +/** + * @file + * MDNS responder + */ + + /* + * Copyright (c) 2015 Verisure Innovation AB + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Erik Ekman + * + */ + +#ifndef LWIP_HDR_APPS_MDNS_H +#define LWIP_HDR_APPS_MDNS_H + +#include "lwip/apps/mdns_opts.h" +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_MDNS_RESPONDER + +enum mdns_sd_proto { + DNSSD_PROTO_UDP = 0, + DNSSD_PROTO_TCP = 1 +}; + +#define MDNS_PROBING_CONFLICT 0 +#define MDNS_PROBING_SUCCESSFUL 1 + +#define MDNS_LABEL_MAXLEN 63 + +struct mdns_host; +struct mdns_service; + +/** Callback function to add text to a reply, called when generating the reply */ +typedef void (*service_get_txt_fn_t)(struct mdns_service *service, void *txt_userdata); + +/** Callback function to let application know the result of probing network for name + * uniqueness, called with result MDNS_PROBING_SUCCESSFUL if no other node claimed + * use for the name for the netif or a service and is safe to use, or MDNS_PROBING_CONFLICT + * if another node is already using it and mdns is disabled on this interface */ +typedef void (*mdns_name_result_cb_t)(struct netif* netif, u8_t result); + +void mdns_resp_init(void); + +void mdns_resp_register_name_result_cb(mdns_name_result_cb_t cb); + +err_t mdns_resp_add_netif(struct netif *netif, const char *hostname, u32_t dns_ttl); +err_t mdns_resp_remove_netif(struct netif *netif); +err_t mdns_resp_rename_netif(struct netif *netif, const char *hostname); + +s8_t mdns_resp_add_service(struct netif *netif, const char *name, const char *service, enum mdns_sd_proto proto, u16_t port, u32_t dns_ttl, service_get_txt_fn_t txt_fn, void *txt_userdata); +err_t mdns_resp_del_service(struct netif *netif, s8_t slot); +err_t mdns_resp_rename_service(struct netif *netif, s8_t slot, const char *name); + +err_t mdns_resp_add_service_txtitem(struct mdns_service *service, const char *txt, u8_t txt_len); + +void mdns_resp_restart(struct netif *netif); +void mdns_resp_announce(struct netif *netif); + +/** + * @ingroup mdns + * Announce IP settings have changed on netif. + * Call this in your callback registered by netif_set_status_callback(). + * No need to call this function when LWIP_NETIF_EXT_STATUS_CALLBACK==1, + * this handled automatically for you. + * @param netif The network interface where settings have changed. + */ +#define mdns_resp_netif_settings_changed(netif) mdns_resp_announce(netif) + +#endif /* LWIP_MDNS_RESPONDER */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_MDNS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/mdns_opts.h b/Other/tun2socks/core/c/include/lwip/apps/mdns_opts.h new file mode 100644 index 0000000..45f2c50 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/mdns_opts.h @@ -0,0 +1,81 @@ +/** + * @file + * MDNS responder + */ + + /* + * Copyright (c) 2015 Verisure Innovation AB + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Erik Ekman + * + */ + +#ifndef LWIP_HDR_APPS_MDNS_OPTS_H +#define LWIP_HDR_APPS_MDNS_OPTS_H + +#include "lwip/opt.h" + +/** + * @defgroup mdns_opts Options + * @ingroup mdns + * @{ + */ + +/** + * LWIP_MDNS_RESPONDER==1: Turn on multicast DNS module. UDP must be available for MDNS + * transport. IGMP is needed for IPv4 multicast. + */ +#ifndef LWIP_MDNS_RESPONDER +#define LWIP_MDNS_RESPONDER 0 +#endif /* LWIP_MDNS_RESPONDER */ + +/** The maximum number of services per netif */ +#ifndef MDNS_MAX_SERVICES +#define MDNS_MAX_SERVICES 1 +#endif + +/** MDNS_RESP_USENETIF_EXTCALLBACK==1: register an ext_callback on the netif + * to automatically restart probing/announcing on status or address change. + */ +#ifndef MDNS_RESP_USENETIF_EXTCALLBACK +#define MDNS_RESP_USENETIF_EXTCALLBACK LWIP_NETIF_EXT_STATUS_CALLBACK +#endif + +/** + * MDNS_DEBUG: Enable debugging for multicast DNS. + */ +#ifndef MDNS_DEBUG +#define MDNS_DEBUG LWIP_DBG_OFF +#endif + +/** + * @} + */ + +#endif /* LWIP_HDR_APPS_MDNS_OPTS_H */ + diff --git a/Other/tun2socks/core/c/include/lwip/apps/mdns_priv.h b/Other/tun2socks/core/c/include/lwip/apps/mdns_priv.h new file mode 100644 index 0000000..9635b5b --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/mdns_priv.h @@ -0,0 +1,74 @@ +/** + * @file + * MDNS responder private definitions + */ + + /* + * Copyright (c) 2015 Verisure Innovation AB + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Erik Ekman + * + */ +#ifndef LWIP_HDR_MDNS_PRIV_H +#define LWIP_HDR_MDNS_PRIV_H + +#include "lwip/apps/mdns_opts.h" +#include "lwip/pbuf.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_MDNS_RESPONDER + +/* Domain struct and methods - visible for unit tests */ + +#define MDNS_DOMAIN_MAXLEN 256 +#define MDNS_READNAME_ERROR 0xFFFF + +struct mdns_domain { + /* Encoded domain name */ + u8_t name[MDNS_DOMAIN_MAXLEN]; + /* Total length of domain name, including zero */ + u16_t length; + /* Set if compression of this domain is not allowed */ + u8_t skip_compression; +}; + +err_t mdns_domain_add_label(struct mdns_domain *domain, const char *label, u8_t len); +u16_t mdns_readname(struct pbuf *p, u16_t offset, struct mdns_domain *domain); +int mdns_domain_eq(struct mdns_domain *a, struct mdns_domain *b); +u16_t mdns_compress_domain(struct pbuf *pbuf, u16_t *offset, struct mdns_domain *domain); + +#endif /* LWIP_MDNS_RESPONDER */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_MDNS_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/mqtt.h b/Other/tun2socks/core/c/include/lwip/apps/mqtt.h new file mode 100644 index 0000000..c2bb228 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/mqtt.h @@ -0,0 +1,205 @@ +/** + * @file + * MQTT client + */ + +/* + * Copyright (c) 2016 Erik Andersson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Erik Andersson + * + */ +#ifndef LWIP_HDR_APPS_MQTT_CLIENT_H +#define LWIP_HDR_APPS_MQTT_CLIENT_H + +#include "lwip/apps/mqtt_opts.h" +#include "lwip/err.h" +#include "lwip/ip_addr.h" +#include "lwip/prot/iana.h" + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct mqtt_client_s mqtt_client_t; + +#if LWIP_ALTCP && LWIP_ALTCP_TLS +struct altcp_tls_config; +#endif + +/** @ingroup mqtt + * Default MQTT port (non-TLS) */ +#define MQTT_PORT LWIP_IANA_PORT_MQTT +/** @ingroup mqtt + * Default MQTT TLS port */ +#define MQTT_TLS_PORT LWIP_IANA_PORT_SECURE_MQTT + +/*---------------------------------------------------------------------------------------------- */ +/* Connection with server */ + +/** + * @ingroup mqtt + * Client information and connection parameters */ +struct mqtt_connect_client_info_t { + /** Client identifier, must be set by caller */ + const char *client_id; + /** User name, set to NULL if not used */ + const char* client_user; + /** Password, set to NULL if not used */ + const char* client_pass; + /** keep alive time in seconds, 0 to disable keep alive functionality*/ + u16_t keep_alive; + /** will topic, set to NULL if will is not to be used, + will_msg, will_qos and will retain are then ignored */ + const char* will_topic; + /** will_msg, see will_topic */ + const char* will_msg; + /** will_qos, see will_topic */ + u8_t will_qos; + /** will_retain, see will_topic */ + u8_t will_retain; +#if LWIP_ALTCP && LWIP_ALTCP_TLS + /** TLS configuration for secure connections */ + struct altcp_tls_config *tls_config; +#endif +}; + +/** + * @ingroup mqtt + * Connection status codes */ +typedef enum +{ + /** Accepted */ + MQTT_CONNECT_ACCEPTED = 0, + /** Refused protocol version */ + MQTT_CONNECT_REFUSED_PROTOCOL_VERSION = 1, + /** Refused identifier */ + MQTT_CONNECT_REFUSED_IDENTIFIER = 2, + /** Refused server */ + MQTT_CONNECT_REFUSED_SERVER = 3, + /** Refused user credentials */ + MQTT_CONNECT_REFUSED_USERNAME_PASS = 4, + /** Refused not authorized */ + MQTT_CONNECT_REFUSED_NOT_AUTHORIZED_ = 5, + /** Disconnected */ + MQTT_CONNECT_DISCONNECTED = 256, + /** Timeout */ + MQTT_CONNECT_TIMEOUT = 257 +} mqtt_connection_status_t; + +/** + * @ingroup mqtt + * Function prototype for mqtt connection status callback. Called when + * client has connected to the server after initiating a mqtt connection attempt by + * calling mqtt_client_connect() or when connection is closed by server or an error + * + * @param client MQTT client itself + * @param arg Additional argument to pass to the callback function + * @param status Connect result code or disconnection notification @see mqtt_connection_status_t + * + */ +typedef void (*mqtt_connection_cb_t)(mqtt_client_t *client, void *arg, mqtt_connection_status_t status); + + +/** + * @ingroup mqtt + * Data callback flags */ +enum { + /** Flag set when last fragment of data arrives in data callback */ + MQTT_DATA_FLAG_LAST = 1 +}; + +/** + * @ingroup mqtt + * Function prototype for MQTT incoming publish data callback function. Called when data + * arrives to a subscribed topic @see mqtt_subscribe + * + * @param arg Additional argument to pass to the callback function + * @param data User data, pointed object, data may not be referenced after callback return, + NULL is passed when all publish data are delivered + * @param len Length of publish data fragment + * @param flags MQTT_DATA_FLAG_LAST set when this call contains the last part of data from publish message + * + */ +typedef void (*mqtt_incoming_data_cb_t)(void *arg, const u8_t *data, u16_t len, u8_t flags); + + +/** + * @ingroup mqtt + * Function prototype for MQTT incoming publish function. Called when an incoming publish + * arrives to a subscribed topic @see mqtt_subscribe + * + * @param arg Additional argument to pass to the callback function + * @param topic Zero terminated Topic text string, topic may not be referenced after callback return + * @param tot_len Total length of publish data, if set to 0 (no publish payload) data callback will not be invoked + */ +typedef void (*mqtt_incoming_publish_cb_t)(void *arg, const char *topic, u32_t tot_len); + + +/** + * @ingroup mqtt + * Function prototype for mqtt request callback. Called when a subscribe, unsubscribe + * or publish request has completed + * @param arg Pointer to user data supplied when invoking request + * @param err ERR_OK on success + * ERR_TIMEOUT if no response was received within timeout, + * ERR_ABRT if (un)subscribe was denied + */ +typedef void (*mqtt_request_cb_t)(void *arg, err_t err); + + +err_t mqtt_client_connect(mqtt_client_t *client, const ip_addr_t *ipaddr, u16_t port, mqtt_connection_cb_t cb, void *arg, + const struct mqtt_connect_client_info_t *client_info); + +void mqtt_disconnect(mqtt_client_t *client); + +mqtt_client_t *mqtt_client_new(void); +void mqtt_client_free(mqtt_client_t* client); + +u8_t mqtt_client_is_connected(mqtt_client_t *client); + +void mqtt_set_inpub_callback(mqtt_client_t *client, mqtt_incoming_publish_cb_t, + mqtt_incoming_data_cb_t data_cb, void *arg); + +err_t mqtt_sub_unsub(mqtt_client_t *client, const char *topic, u8_t qos, mqtt_request_cb_t cb, void *arg, u8_t sub); + +/** @ingroup mqtt + *Subscribe to topic */ +#define mqtt_subscribe(client, topic, qos, cb, arg) mqtt_sub_unsub(client, topic, qos, cb, arg, 1) +/** @ingroup mqtt + * Unsubscribe to topic */ +#define mqtt_unsubscribe(client, topic, cb, arg) mqtt_sub_unsub(client, topic, 0, cb, arg, 0) + +err_t mqtt_publish(mqtt_client_t *client, const char *topic, const void *payload, u16_t payload_length, u8_t qos, u8_t retain, + mqtt_request_cb_t cb, void *arg); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_MQTT_CLIENT_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/mqtt_opts.h b/Other/tun2socks/core/c/include/lwip/apps/mqtt_opts.h new file mode 100644 index 0000000..4226d21 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/mqtt_opts.h @@ -0,0 +1,103 @@ +/** + * @file + * MQTT client options + */ + +/* + * Copyright (c) 2016 Erik Andersson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Erik Andersson + * + */ +#ifndef LWIP_HDR_APPS_MQTT_OPTS_H +#define LWIP_HDR_APPS_MQTT_OPTS_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @defgroup mqtt_opts Options + * @ingroup mqtt + * @{ + */ + +/** + * Output ring-buffer size, must be able to fit largest outgoing publish message topic+payloads + */ +#ifndef MQTT_OUTPUT_RINGBUF_SIZE +#define MQTT_OUTPUT_RINGBUF_SIZE 256 +#endif + +/** + * Number of bytes in receive buffer, must be at least the size of the longest incoming topic + 8 + * If one wants to avoid fragmented incoming publish, set length to max incoming topic length + max payload length + 8 + */ +#ifndef MQTT_VAR_HEADER_BUFFER_LEN +#define MQTT_VAR_HEADER_BUFFER_LEN 128 +#endif + +/** + * Maximum number of pending subscribe, unsubscribe and publish requests to server . + */ +#ifndef MQTT_REQ_MAX_IN_FLIGHT +#define MQTT_REQ_MAX_IN_FLIGHT 4 +#endif + +/** + * Seconds between each cyclic timer call. + */ +#ifndef MQTT_CYCLIC_TIMER_INTERVAL +#define MQTT_CYCLIC_TIMER_INTERVAL 5 +#endif + +/** + * Publish, subscribe and unsubscribe request timeout in seconds. + */ +#ifndef MQTT_REQ_TIMEOUT +#define MQTT_REQ_TIMEOUT 30 +#endif + +/** + * Seconds for MQTT connect response timeout after sending connect request + */ +#ifndef MQTT_CONNECT_TIMOUT +#define MQTT_CONNECT_TIMOUT 100 +#endif + +/** + * @} + */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_MQTT_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/mqtt_priv.h b/Other/tun2socks/core/c/include/lwip/apps/mqtt_priv.h new file mode 100644 index 0000000..b775913 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/mqtt_priv.h @@ -0,0 +1,104 @@ +/** + * @file + * MQTT client (private interface) + */ + +/* + * Copyright (c) 2016 Erik Andersson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Erik Andersson + * + */ +#ifndef LWIP_HDR_APPS_MQTT_PRIV_H +#define LWIP_HDR_APPS_MQTT_PRIV_H + +#include "lwip/apps/mqtt.h" +#include "lwip/altcp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** Pending request item, binds application callback to pending server requests */ +struct mqtt_request_t +{ + /** Next item in list, NULL means this is the last in chain, + next pointing at itself means request is unallocated */ + struct mqtt_request_t *next; + /** Callback to upper layer */ + mqtt_request_cb_t cb; + void *arg; + /** MQTT packet identifier */ + u16_t pkt_id; + /** Expire time relative to element before this */ + u16_t timeout_diff; +}; + +/** Ring buffer */ +struct mqtt_ringbuf_t { + u16_t put; + u16_t get; + u8_t buf[MQTT_OUTPUT_RINGBUF_SIZE]; +}; + +/** MQTT client */ +struct mqtt_client_s +{ + /** Timers and timeouts */ + u16_t cyclic_tick; + u16_t keep_alive; + u16_t server_watchdog; + /** Packet identifier generator*/ + u16_t pkt_id_seq; + /** Packet identifier of pending incoming publish */ + u16_t inpub_pkt_id; + /** Connection state */ + u8_t conn_state; + struct altcp_pcb *conn; + /** Connection callback */ + void *connect_arg; + mqtt_connection_cb_t connect_cb; + /** Pending requests to server */ + struct mqtt_request_t *pend_req_queue; + struct mqtt_request_t req_list[MQTT_REQ_MAX_IN_FLIGHT]; + void *inpub_arg; + /** Incoming data callback */ + mqtt_incoming_data_cb_t data_cb; + mqtt_incoming_publish_cb_t pub_cb; + /** Input */ + u32_t msg_idx; + u8_t rx_buffer[MQTT_VAR_HEADER_BUFFER_LEN]; + /** Output ring-buffer */ + struct mqtt_ringbuf_t output; +}; + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_MQTT_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/netbiosns.h b/Other/tun2socks/core/c/include/lwip/apps/netbiosns.h new file mode 100644 index 0000000..a326d33 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/netbiosns.h @@ -0,0 +1,51 @@ +/** + * @file + * NETBIOS name service responder + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ +#ifndef LWIP_HDR_APPS_NETBIOS_H +#define LWIP_HDR_APPS_NETBIOS_H + +#include "lwip/apps/netbiosns_opts.h" + +#ifdef __cplusplus +extern "C" { +#endif + +void netbiosns_init(void); +#ifndef NETBIOS_LWIP_NAME +void netbiosns_set_name(const char* hostname); +#endif +void netbiosns_stop(void); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_NETBIOS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/netbiosns_opts.h b/Other/tun2socks/core/c/include/lwip/apps/netbiosns_opts.h new file mode 100644 index 0000000..1f51ab0 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/netbiosns_opts.h @@ -0,0 +1,66 @@ +/** + * @file + * NETBIOS name service responder options + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ +#ifndef LWIP_HDR_APPS_NETBIOS_OPTS_H +#define LWIP_HDR_APPS_NETBIOS_OPTS_H + +#include "lwip/opt.h" + +/** + * @defgroup netbiosns_opts Options + * @ingroup netbiosns + * @{ + */ + +/** NetBIOS name of lwip device + * This must be uppercase until NETBIOS_STRCMP() is defined to a string + * comparision function that is case insensitive. + * If you want to use the netif's hostname, use this (with LWIP_NETIF_HOSTNAME): + * (ip_current_netif() != NULL ? ip_current_netif()->hostname != NULL ? ip_current_netif()->hostname : "" : "") + * + * If this is not defined, netbiosns_set_name() can be called at runtime to change the name. + */ +#ifdef __DOXYGEN__ +#define NETBIOS_LWIP_NAME "NETBIOSLWIPDEV" +#endif + +/** Respond to NetBIOS name queries + * Default is disabled + */ +#if !defined LWIP_NETBIOS_RESPOND_NAME_QUERY || defined __DOXYGEN__ +#define LWIP_NETBIOS_RESPOND_NAME_QUERY 0 +#endif + +/** + * @} + */ + +#endif /* LWIP_HDR_APPS_NETBIOS_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/smtp.h b/Other/tun2socks/core/c/include/lwip/apps/smtp.h new file mode 100644 index 0000000..fb4a4a7 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/smtp.h @@ -0,0 +1,128 @@ +#ifndef LWIP_HDR_APPS_SMTP_H +#define LWIP_HDR_APPS_SMTP_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include "lwip/apps/smtp_opts.h" +#include "lwip/err.h" +#include "lwip/prot/iana.h" + +/** The default TCP port used for SMTP */ +#define SMTP_DEFAULT_PORT LWIP_IANA_PORT_SMTP +/** The default TCP port used for SMTPS */ +#define SMTPS_DEFAULT_PORT LWIP_IANA_PORT_SMTPS + +/** Email successfully sent */ +#define SMTP_RESULT_OK 0 +/** Unknown error */ +#define SMTP_RESULT_ERR_UNKNOWN 1 +/** Connection to server failed */ +#define SMTP_RESULT_ERR_CONNECT 2 +/** Failed to resolve server hostname */ +#define SMTP_RESULT_ERR_HOSTNAME 3 +/** Connection unexpectedly closed by remote server */ +#define SMTP_RESULT_ERR_CLOSED 4 +/** Connection timed out (server didn't respond in time) */ +#define SMTP_RESULT_ERR_TIMEOUT 5 +/** Server responded with an unknown response code */ +#define SMTP_RESULT_ERR_SVR_RESP 6 +/** Out of resources locally */ +#define SMTP_RESULT_ERR_MEM 7 + +/** Prototype of an smtp callback function + * + * @param arg argument specified when initiating the email + * @param smtp_result result of the mail transfer (see defines SMTP_RESULT_*) + * @param srv_err if aborted by the server, this contains the error code received + * @param err an error returned by internal lwip functions, can help to specify + * the source of the error but must not necessarily be != ERR_OK + */ +typedef void (*smtp_result_fn)(void *arg, u8_t smtp_result, u16_t srv_err, err_t err); + +/** This structure is used as argument for smtp_send_mail_int(), + * which in turn can be used with tcpip_callback() to send mail + * from interrupt context, e.g. like this: + * struct smtp_send_request *req; (to be filled) + * tcpip_try_callback(smtp_send_mail_int, (void*)req); + * + * For member description, see parameter description of smtp_send_mail(). + * When using with tcpip_callback, this structure has to stay allocated + * (e.g. using mem_malloc/mem_free) until its 'callback_fn' is called. + */ +struct smtp_send_request { + const char *from; + const char* to; + const char* subject; + const char* body; + smtp_result_fn callback_fn; + void* callback_arg; + /** If this is != 0, data is *not* copied into an extra buffer + * but used from the pointers supplied in this struct. + * This means less memory usage, but data must stay untouched until + * the callback function is called. */ + u8_t static_data; +}; + + +#if SMTP_BODYDH + +#ifndef SMTP_BODYDH_BUFFER_SIZE +#define SMTP_BODYDH_BUFFER_SIZE 256 +#endif /* SMTP_BODYDH_BUFFER_SIZE */ + +struct smtp_bodydh { + u16_t state; + u16_t length; /* Length of content in buffer */ + char buffer[SMTP_BODYDH_BUFFER_SIZE]; /* buffer for generated content */ +#ifdef SMTP_BODYDH_USER_SIZE + u8_t user[SMTP_BODYDH_USER_SIZE]; +#endif /* SMTP_BODYDH_USER_SIZE */ +}; + +enum bdh_retvals_e { + BDH_DONE = 0, + BDH_WORKING +}; + +/** Prototype of an smtp body callback function + * It receives a struct smtp_bodydh, and a buffer to write data, + * must return BDH_WORKING to be called again and BDH_DONE when + * it has finished processing. This one tries to fill one TCP buffer with + * data, your function will be repeatedly called until that happens; so if you + * know you'll be taking too long to serve your request, pause once in a while + * by writing length=0 to avoid hogging system resources + * + * @param arg argument specified when initiating the email + * @param smtp_bodydh state handling + buffer structure + */ +typedef int (*smtp_bodycback_fn)(void *arg, struct smtp_bodydh *bodydh); + +err_t smtp_send_mail_bodycback(const char *from, const char* to, const char* subject, + smtp_bodycback_fn bodycback_fn, smtp_result_fn callback_fn, void* callback_arg); + +#endif /* SMTP_BODYDH */ + + +err_t smtp_set_server_addr(const char* server); +void smtp_set_server_port(u16_t port); +#if LWIP_ALTCP && LWIP_ALTCP_TLS +struct altcp_tls_config; +void smtp_set_tls_config(struct altcp_tls_config *tls_config); +#endif +err_t smtp_set_auth(const char* username, const char* pass); +err_t smtp_send_mail(const char *from, const char* to, const char* subject, const char* body, + smtp_result_fn callback_fn, void* callback_arg); +err_t smtp_send_mail_static(const char *from, const char* to, const char* subject, const char* body, + smtp_result_fn callback_fn, void* callback_arg); +void smtp_send_mail_int(void *arg); +#ifdef LWIP_DEBUG +const char* smtp_result_str(u8_t smtp_result); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_SMTP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/smtp_opts.h b/Other/tun2socks/core/c/include/lwip/apps/smtp_opts.h new file mode 100644 index 0000000..bc743f6 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/smtp_opts.h @@ -0,0 +1,81 @@ +#ifndef LWIP_HDR_APPS_SMTP_OPTS_H +#define LWIP_HDR_APPS_SMTP_OPTS_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @defgroup smtp_opts Options + * @ingroup smtp + * + * @{ + */ + +/** Set this to 1 to enable data handler callback on BODY */ +#ifndef SMTP_BODYDH +#define SMTP_BODYDH 0 +#endif + +/** SMTP_DEBUG: Enable debugging for SNTP. */ +#ifndef SMTP_DEBUG +#define SMTP_DEBUG LWIP_DBG_OFF +#endif + +/** Maximum length reserved for server name including terminating 0 byte */ +#ifndef SMTP_MAX_SERVERNAME_LEN +#define SMTP_MAX_SERVERNAME_LEN 256 +#endif + +/** Maximum length reserved for username */ +#ifndef SMTP_MAX_USERNAME_LEN +#define SMTP_MAX_USERNAME_LEN 32 +#endif + +/** Maximum length reserved for password */ +#ifndef SMTP_MAX_PASS_LEN +#define SMTP_MAX_PASS_LEN 32 +#endif + +/** Set this to 0 if you know the authentication data will not change + * during the smtp session, which saves some heap space. */ +#ifndef SMTP_COPY_AUTHDATA +#define SMTP_COPY_AUTHDATA 1 +#endif + +/** Set this to 0 to save some code space if you know for sure that all data + * passed to this module conforms to the requirements in the SMTP RFC. + * WARNING: use this with care! + */ +#ifndef SMTP_CHECK_DATA +#define SMTP_CHECK_DATA 1 +#endif + +/** Set this to 1 to enable AUTH PLAIN support */ +#ifndef SMTP_SUPPORT_AUTH_PLAIN +#define SMTP_SUPPORT_AUTH_PLAIN 1 +#endif + +/** Set this to 1 to enable AUTH LOGIN support */ +#ifndef SMTP_SUPPORT_AUTH_LOGIN +#define SMTP_SUPPORT_AUTH_LOGIN 1 +#endif + +/* Memory allocation/deallocation can be overridden... */ +#ifndef SMTP_STATE_MALLOC +#define SMTP_STATE_MALLOC(size) mem_malloc(size) +#define SMTP_STATE_FREE(ptr) mem_free(ptr) +#endif + +/** + * @} + */ + +#ifdef __cplusplus +} +#endif + +#endif /* SMTP_OPTS_H */ + diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmp.h b/Other/tun2socks/core/c/include/lwip/apps/snmp.h new file mode 100644 index 0000000..a3f8eb1 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmp.h @@ -0,0 +1,135 @@ +/** + * @file + * SNMP server main API - start and basic configuration + */ + +/* + * Copyright (c) 2001, 2002 Leon Woestenberg + * Copyright (c) 2001, 2002 Axon Digital Design B.V., The Netherlands. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Leon Woestenberg + * Martin Hentschel + * + */ +#ifndef LWIP_HDR_APPS_SNMP_H +#define LWIP_HDR_APPS_SNMP_H + +#include "lwip/apps/snmp_opts.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_SNMP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/err.h" +#include "lwip/apps/snmp_core.h" + +/** SNMP variable binding descriptor (publically needed for traps) */ +struct snmp_varbind +{ + /** pointer to next varbind, NULL for last in list */ + struct snmp_varbind *next; + /** pointer to previous varbind, NULL for first in list */ + struct snmp_varbind *prev; + + /** object identifier */ + struct snmp_obj_id oid; + + /** value ASN1 type */ + u8_t type; + /** object value length */ + u16_t value_len; + /** object value */ + void *value; +}; + +/** + * @ingroup snmp_core + * Agent setup, start listening to port 161. + */ +void snmp_init(void); +void snmp_set_mibs(const struct snmp_mib **mibs, u8_t num_mibs); + +void snmp_set_device_enterprise_oid(const struct snmp_obj_id* device_enterprise_oid); +const struct snmp_obj_id* snmp_get_device_enterprise_oid(void); + +void snmp_trap_dst_enable(u8_t dst_idx, u8_t enable); +void snmp_trap_dst_ip_set(u8_t dst_idx, const ip_addr_t *dst); + +/** Generic trap: cold start */ +#define SNMP_GENTRAP_COLDSTART 0 +/** Generic trap: warm start */ +#define SNMP_GENTRAP_WARMSTART 1 +/** Generic trap: link down */ +#define SNMP_GENTRAP_LINKDOWN 2 +/** Generic trap: link up */ +#define SNMP_GENTRAP_LINKUP 3 +/** Generic trap: authentication failure */ +#define SNMP_GENTRAP_AUTH_FAILURE 4 +/** Generic trap: EGP neighbor lost */ +#define SNMP_GENTRAP_EGP_NEIGHBOR_LOSS 5 +/** Generic trap: enterprise specific */ +#define SNMP_GENTRAP_ENTERPRISE_SPECIFIC 6 + +err_t snmp_send_trap_generic(s32_t generic_trap); +err_t snmp_send_trap_specific(s32_t specific_trap, struct snmp_varbind *varbinds); +err_t snmp_send_trap(const struct snmp_obj_id* oid, s32_t generic_trap, s32_t specific_trap, struct snmp_varbind *varbinds); + +#define SNMP_AUTH_TRAPS_DISABLED 0 +#define SNMP_AUTH_TRAPS_ENABLED 1 +void snmp_set_auth_traps_enabled(u8_t enable); +u8_t snmp_get_auth_traps_enabled(void); + +u8_t snmp_v1_enabled(void); +u8_t snmp_v2c_enabled(void); +u8_t snmp_v3_enabled(void); +void snmp_v1_enable(u8_t enable); +void snmp_v2c_enable(u8_t enable); +void snmp_v3_enable(u8_t enable); + +const char * snmp_get_community(void); +const char * snmp_get_community_write(void); +const char * snmp_get_community_trap(void); +void snmp_set_community(const char * const community); +void snmp_set_community_write(const char * const community); +void snmp_set_community_trap(const char * const community); + +void snmp_coldstart_trap(void); +void snmp_authfail_trap(void); + +typedef void (*snmp_write_callback_fct)(const u32_t* oid, u8_t oid_len, void* callback_arg); +void snmp_set_write_callback(snmp_write_callback_fct write_callback, void* callback_arg); + +#endif /* LWIP_SNMP */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_SNMP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmp_core.h b/Other/tun2socks/core/c/include/lwip/apps/snmp_core.h new file mode 100644 index 0000000..6021c72 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmp_core.h @@ -0,0 +1,377 @@ +/** + * @file + * SNMP core API for implementing MIBs + */ + +/* + * Copyright (c) 2006 Axon Digital Design B.V., The Netherlands. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * Author: Christiaan Simons + * Martin Hentschel + */ + +#ifndef LWIP_HDR_APPS_SNMP_CORE_H +#define LWIP_HDR_APPS_SNMP_CORE_H + +#include "lwip/apps/snmp_opts.h" + +#if LWIP_SNMP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/ip_addr.h" +#include "lwip/err.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* basic ASN1 defines */ +#define SNMP_ASN1_CLASS_UNIVERSAL 0x00 +#define SNMP_ASN1_CLASS_APPLICATION 0x40 +#define SNMP_ASN1_CLASS_CONTEXT 0x80 +#define SNMP_ASN1_CLASS_PRIVATE 0xC0 + +#define SNMP_ASN1_CONTENTTYPE_PRIMITIVE 0x00 +#define SNMP_ASN1_CONTENTTYPE_CONSTRUCTED 0x20 + +/* universal tags (from ASN.1 spec.) */ +#define SNMP_ASN1_UNIVERSAL_END_OF_CONTENT 0 +#define SNMP_ASN1_UNIVERSAL_INTEGER 2 +#define SNMP_ASN1_UNIVERSAL_OCTET_STRING 4 +#define SNMP_ASN1_UNIVERSAL_NULL 5 +#define SNMP_ASN1_UNIVERSAL_OBJECT_ID 6 +#define SNMP_ASN1_UNIVERSAL_SEQUENCE_OF 16 + +/* application specific (SNMP) tags (from SNMPv2-SMI) */ +#define SNMP_ASN1_APPLICATION_IPADDR 0 /* [APPLICATION 0] IMPLICIT OCTET STRING (SIZE (4)) */ +#define SNMP_ASN1_APPLICATION_COUNTER 1 /* [APPLICATION 1] IMPLICIT INTEGER (0..4294967295) => u32_t */ +#define SNMP_ASN1_APPLICATION_GAUGE 2 /* [APPLICATION 2] IMPLICIT INTEGER (0..4294967295) => u32_t */ +#define SNMP_ASN1_APPLICATION_TIMETICKS 3 /* [APPLICATION 3] IMPLICIT INTEGER (0..4294967295) => u32_t */ +#define SNMP_ASN1_APPLICATION_OPAQUE 4 /* [APPLICATION 4] IMPLICIT OCTET STRING */ +#define SNMP_ASN1_APPLICATION_COUNTER64 6 /* [APPLICATION 6] IMPLICIT INTEGER (0..18446744073709551615) */ + +/* context specific (SNMP) tags (from RFC 1905) */ +#define SNMP_ASN1_CONTEXT_VARBIND_NO_SUCH_INSTANCE 1 + +/* full ASN1 type defines */ +#define SNMP_ASN1_TYPE_END_OF_CONTENT (SNMP_ASN1_CLASS_UNIVERSAL | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_UNIVERSAL_END_OF_CONTENT) +#define SNMP_ASN1_TYPE_INTEGER (SNMP_ASN1_CLASS_UNIVERSAL | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_UNIVERSAL_INTEGER) +#define SNMP_ASN1_TYPE_OCTET_STRING (SNMP_ASN1_CLASS_UNIVERSAL | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_UNIVERSAL_OCTET_STRING) +#define SNMP_ASN1_TYPE_NULL (SNMP_ASN1_CLASS_UNIVERSAL | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_UNIVERSAL_NULL) +#define SNMP_ASN1_TYPE_OBJECT_ID (SNMP_ASN1_CLASS_UNIVERSAL | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_UNIVERSAL_OBJECT_ID) +#define SNMP_ASN1_TYPE_SEQUENCE (SNMP_ASN1_CLASS_UNIVERSAL | SNMP_ASN1_CONTENTTYPE_CONSTRUCTED | SNMP_ASN1_UNIVERSAL_SEQUENCE_OF) +#define SNMP_ASN1_TYPE_IPADDR (SNMP_ASN1_CLASS_APPLICATION | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_APPLICATION_IPADDR) +#define SNMP_ASN1_TYPE_IPADDRESS SNMP_ASN1_TYPE_IPADDR +#define SNMP_ASN1_TYPE_COUNTER (SNMP_ASN1_CLASS_APPLICATION | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_APPLICATION_COUNTER) +#define SNMP_ASN1_TYPE_COUNTER32 SNMP_ASN1_TYPE_COUNTER +#define SNMP_ASN1_TYPE_GAUGE (SNMP_ASN1_CLASS_APPLICATION | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_APPLICATION_GAUGE) +#define SNMP_ASN1_TYPE_GAUGE32 SNMP_ASN1_TYPE_GAUGE +#define SNMP_ASN1_TYPE_UNSIGNED32 SNMP_ASN1_TYPE_GAUGE +#define SNMP_ASN1_TYPE_TIMETICKS (SNMP_ASN1_CLASS_APPLICATION | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_APPLICATION_TIMETICKS) +#define SNMP_ASN1_TYPE_OPAQUE (SNMP_ASN1_CLASS_APPLICATION | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_APPLICATION_OPAQUE) +#if LWIP_HAVE_INT64 +#define SNMP_ASN1_TYPE_COUNTER64 (SNMP_ASN1_CLASS_APPLICATION | SNMP_ASN1_CONTENTTYPE_PRIMITIVE | SNMP_ASN1_APPLICATION_COUNTER64) +#endif + +#define SNMP_VARBIND_EXCEPTION_OFFSET 0xF0 +#define SNMP_VARBIND_EXCEPTION_MASK 0x0F + +/** error codes predefined by SNMP prot. */ +typedef enum { + SNMP_ERR_NOERROR = 0, +/* +outdated v1 error codes. do not use anmore! +#define SNMP_ERR_NOSUCHNAME 2 use SNMP_ERR_NOSUCHINSTANCE instead +#define SNMP_ERR_BADVALUE 3 use SNMP_ERR_WRONGTYPE,SNMP_ERR_WRONGLENGTH,SNMP_ERR_WRONGENCODING or SNMP_ERR_WRONGVALUE instead +#define SNMP_ERR_READONLY 4 use SNMP_ERR_NOTWRITABLE instead +*/ + SNMP_ERR_GENERROR = 5, + SNMP_ERR_NOACCESS = 6, + SNMP_ERR_WRONGTYPE = 7, + SNMP_ERR_WRONGLENGTH = 8, + SNMP_ERR_WRONGENCODING = 9, + SNMP_ERR_WRONGVALUE = 10, + SNMP_ERR_NOCREATION = 11, + SNMP_ERR_INCONSISTENTVALUE = 12, + SNMP_ERR_RESOURCEUNAVAILABLE = 13, + SNMP_ERR_COMMITFAILED = 14, + SNMP_ERR_UNDOFAILED = 15, + SNMP_ERR_NOTWRITABLE = 17, + SNMP_ERR_INCONSISTENTNAME = 18, + + SNMP_ERR_NOSUCHINSTANCE = SNMP_VARBIND_EXCEPTION_OFFSET + SNMP_ASN1_CONTEXT_VARBIND_NO_SUCH_INSTANCE +} snmp_err_t; + +/** internal object identifier representation */ +struct snmp_obj_id +{ + u8_t len; + u32_t id[SNMP_MAX_OBJ_ID_LEN]; +}; + +struct snmp_obj_id_const_ref +{ + u8_t len; + const u32_t* id; +}; + +extern const struct snmp_obj_id_const_ref snmp_zero_dot_zero; /* administrative identifier from SNMPv2-SMI */ + +/** SNMP variant value, used as reference in struct snmp_node_instance and table implementation */ +union snmp_variant_value +{ + void* ptr; + const void* const_ptr; + u32_t u32; + s32_t s32; +#if LWIP_HAVE_INT64 + u64_t u64; +#endif +}; + + +/** +SNMP MIB node types + tree node is the only node the stack can process in order to walk the tree, + all other nodes are assumed to be leaf nodes. + This cannot be an enum because users may want to define their own node types. +*/ +#define SNMP_NODE_TREE 0x00 +/* predefined leaf node types */ +#define SNMP_NODE_SCALAR 0x01 +#define SNMP_NODE_SCALAR_ARRAY 0x02 +#define SNMP_NODE_TABLE 0x03 +#define SNMP_NODE_THREADSYNC 0x04 + +/** node "base class" layout, the mandatory fields for a node */ +struct snmp_node +{ + /** one out of SNMP_NODE_TREE or any leaf node type (like SNMP_NODE_SCALAR) */ + u8_t node_type; + /** the number assigned to this node which used as part of the full OID */ + u32_t oid; +}; + +/** SNMP node instance access types */ +typedef enum { + SNMP_NODE_INSTANCE_ACCESS_READ = 1, + SNMP_NODE_INSTANCE_ACCESS_WRITE = 2, + SNMP_NODE_INSTANCE_READ_ONLY = SNMP_NODE_INSTANCE_ACCESS_READ, + SNMP_NODE_INSTANCE_READ_WRITE = (SNMP_NODE_INSTANCE_ACCESS_READ | SNMP_NODE_INSTANCE_ACCESS_WRITE), + SNMP_NODE_INSTANCE_WRITE_ONLY = SNMP_NODE_INSTANCE_ACCESS_WRITE, + SNMP_NODE_INSTANCE_NOT_ACCESSIBLE = 0 +} snmp_access_t; + +struct snmp_node_instance; + +typedef s16_t (*node_instance_get_value_method)(struct snmp_node_instance*, void*); +typedef snmp_err_t (*node_instance_set_test_method)(struct snmp_node_instance*, u16_t, void*); +typedef snmp_err_t (*node_instance_set_value_method)(struct snmp_node_instance*, u16_t, void*); +typedef void (*node_instance_release_method)(struct snmp_node_instance*); + +#define SNMP_GET_VALUE_RAW_DATA 0x4000 /* do not use 0x8000 because return value of node_instance_get_value_method is signed16 and 0x8000 would be the signed bit */ + +/** SNMP node instance */ +struct snmp_node_instance +{ + /** prefilled with the node, get_instance() is called on; may be changed by user to any value to pass an arbitrary node between calls to get_instance() and get_value/test_value/set_value */ + const struct snmp_node* node; + /** prefilled with the instance id requested; for get_instance() this is the exact oid requested; for get_next_instance() this is the relative starting point, stack expects relative oid of next node here */ + struct snmp_obj_id instance_oid; + + /** ASN type for this object (see snmp_asn1.h for definitions) */ + u8_t asn1_type; + /** one out of instance access types defined above (SNMP_NODE_INSTANCE_READ_ONLY,...) */ + snmp_access_t access; + + /** returns object value for the given object identifier. Return values <0 to indicate an error */ + node_instance_get_value_method get_value; + /** tests length and/or range BEFORE setting */ + node_instance_set_test_method set_test; + /** sets object value, only called when set_test() was successful */ + node_instance_set_value_method set_value; + /** called in any case when the instance is not required anymore by stack (useful for freeing memory allocated in get_instance/get_next_instance methods) */ + node_instance_release_method release_instance; + + /** reference to pass arbitrary value between calls to get_instance() and get_value/test_value/set_value */ + union snmp_variant_value reference; + /** see reference (if reference is a pointer, the length of underlying data may be stored here or anything else) */ + u32_t reference_len; +}; + + +/** SNMP tree node */ +struct snmp_tree_node +{ + /** inherited "base class" members */ + struct snmp_node node; + u16_t subnode_count; + const struct snmp_node* const *subnodes; +}; + +#define SNMP_CREATE_TREE_NODE(oid, subnodes) \ + {{ SNMP_NODE_TREE, (oid) }, \ + (u16_t)LWIP_ARRAYSIZE(subnodes), (subnodes) } + +#define SNMP_CREATE_EMPTY_TREE_NODE(oid) \ + {{ SNMP_NODE_TREE, (oid) }, \ + 0, NULL } + +/** SNMP leaf node */ +struct snmp_leaf_node +{ + /** inherited "base class" members */ + struct snmp_node node; + snmp_err_t (*get_instance)(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); + snmp_err_t (*get_next_instance)(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); +}; + +/** represents a single mib with its base oid and root node */ +struct snmp_mib +{ + const u32_t *base_oid; + u8_t base_oid_len; + const struct snmp_node *root_node; +}; + +#define SNMP_MIB_CREATE(oid_list, root_node) { (oid_list), (u8_t)LWIP_ARRAYSIZE(oid_list), root_node } + +/** OID range structure */ +struct snmp_oid_range +{ + u32_t min; + u32_t max; +}; + +/** checks if incoming OID length and values are in allowed ranges */ +u8_t snmp_oid_in_range(const u32_t *oid_in, u8_t oid_len, const struct snmp_oid_range *oid_ranges, u8_t oid_ranges_len); + +typedef enum { + SNMP_NEXT_OID_STATUS_SUCCESS, + SNMP_NEXT_OID_STATUS_NO_MATCH, + SNMP_NEXT_OID_STATUS_BUF_TO_SMALL +} snmp_next_oid_status_t; + +/** state for next_oid_init / next_oid_check functions */ +struct snmp_next_oid_state +{ + const u32_t* start_oid; + u8_t start_oid_len; + + u32_t* next_oid; + u8_t next_oid_len; + u8_t next_oid_max_len; + + snmp_next_oid_status_t status; + void* reference; +}; + +void snmp_next_oid_init(struct snmp_next_oid_state *state, + const u32_t *start_oid, u8_t start_oid_len, + u32_t *next_oid_buf, u8_t next_oid_max_len); +u8_t snmp_next_oid_precheck(struct snmp_next_oid_state *state, const u32_t *oid, u8_t oid_len); +u8_t snmp_next_oid_check(struct snmp_next_oid_state *state, const u32_t *oid, u8_t oid_len, void* reference); + +void snmp_oid_assign(struct snmp_obj_id* target, const u32_t *oid, u8_t oid_len); +void snmp_oid_combine(struct snmp_obj_id* target, const u32_t *oid1, u8_t oid1_len, const u32_t *oid2, u8_t oid2_len); +void snmp_oid_prefix(struct snmp_obj_id* target, const u32_t *oid, u8_t oid_len); +void snmp_oid_append(struct snmp_obj_id* target, const u32_t *oid, u8_t oid_len); +u8_t snmp_oid_equal(const u32_t *oid1, u8_t oid1_len, const u32_t *oid2, u8_t oid2_len); +s8_t snmp_oid_compare(const u32_t *oid1, u8_t oid1_len, const u32_t *oid2, u8_t oid2_len); + +#if LWIP_IPV4 +u8_t snmp_oid_to_ip4(const u32_t *oid, ip4_addr_t *ip); +void snmp_ip4_to_oid(const ip4_addr_t *ip, u32_t *oid); +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 +u8_t snmp_oid_to_ip6(const u32_t *oid, ip6_addr_t *ip); +void snmp_ip6_to_oid(const ip6_addr_t *ip, u32_t *oid); +#endif /* LWIP_IPV6 */ +#if LWIP_IPV4 || LWIP_IPV6 +u8_t snmp_ip_to_oid(const ip_addr_t *ip, u32_t *oid); +u8_t snmp_ip_port_to_oid(const ip_addr_t *ip, u16_t port, u32_t *oid); + +u8_t snmp_oid_to_ip(const u32_t *oid, u8_t oid_len, ip_addr_t *ip); +u8_t snmp_oid_to_ip_port(const u32_t *oid, u8_t oid_len, ip_addr_t *ip, u16_t *port); +#endif /* LWIP_IPV4 || LWIP_IPV6 */ + +struct netif; +u8_t netif_to_num(const struct netif *netif); + +snmp_err_t snmp_set_test_ok(struct snmp_node_instance* instance, u16_t value_len, void* value); /* generic function which can be used if test is always successful */ + +err_t snmp_decode_bits(const u8_t *buf, u32_t buf_len, u32_t *bit_value); +err_t snmp_decode_truthvalue(const s32_t *asn1_value, u8_t *bool_value); +u8_t snmp_encode_bits(u8_t *buf, u32_t buf_len, u32_t bit_value, u8_t bit_count); +u8_t snmp_encode_truthvalue(s32_t *asn1_value, u32_t bool_value); + +struct snmp_statistics +{ + u32_t inpkts; + u32_t outpkts; + u32_t inbadversions; + u32_t inbadcommunitynames; + u32_t inbadcommunityuses; + u32_t inasnparseerrs; + u32_t intoobigs; + u32_t innosuchnames; + u32_t inbadvalues; + u32_t inreadonlys; + u32_t ingenerrs; + u32_t intotalreqvars; + u32_t intotalsetvars; + u32_t ingetrequests; + u32_t ingetnexts; + u32_t insetrequests; + u32_t ingetresponses; + u32_t intraps; + u32_t outtoobigs; + u32_t outnosuchnames; + u32_t outbadvalues; + u32_t outgenerrs; + u32_t outgetrequests; + u32_t outgetnexts; + u32_t outsetrequests; + u32_t outgetresponses; + u32_t outtraps; +#if LWIP_SNMP_V3 + u32_t unsupportedseclevels; + u32_t notintimewindows; + u32_t unknownusernames; + u32_t unknownengineids; + u32_t wrongdigests; + u32_t decryptionerrors; +#endif +}; + +extern struct snmp_statistics snmp_stats; + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_SNMP */ + +#endif /* LWIP_HDR_APPS_SNMP_CORE_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmp_mib2.h b/Other/tun2socks/core/c/include/lwip/apps/snmp_mib2.h new file mode 100644 index 0000000..2f4a689 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmp_mib2.h @@ -0,0 +1,78 @@ +/** + * @file + * SNMP MIB2 API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Dirk Ziegelmeier + * + */ +#ifndef LWIP_HDR_APPS_SNMP_MIB2_H +#define LWIP_HDR_APPS_SNMP_MIB2_H + +#include "lwip/apps/snmp_opts.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_SNMP /* don't build if not configured for use in lwipopts.h */ +#if SNMP_LWIP_MIB2 + +#include "lwip/apps/snmp_core.h" + +extern const struct snmp_mib mib2; + +#if SNMP_USE_NETCONN +#include "lwip/apps/snmp_threadsync.h" +void snmp_mib2_lwip_synchronizer(snmp_threadsync_called_fn fn, void* arg); +extern struct snmp_threadsync_instance snmp_mib2_lwip_locks; +#endif + +#ifndef SNMP_SYSSERVICES +#define SNMP_SYSSERVICES ((1 << 6) | (1 << 3) | ((IP_FORWARD) << 2)) +#endif + +void snmp_mib2_set_sysdescr(const u8_t* str, const u16_t* len); /* read-only be defintion */ +void snmp_mib2_set_syscontact(u8_t *ocstr, u16_t *ocstrlen, u16_t bufsize); +void snmp_mib2_set_syscontact_readonly(const u8_t *ocstr, const u16_t *ocstrlen); +void snmp_mib2_set_sysname(u8_t *ocstr, u16_t *ocstrlen, u16_t bufsize); +void snmp_mib2_set_sysname_readonly(const u8_t *ocstr, const u16_t *ocstrlen); +void snmp_mib2_set_syslocation(u8_t *ocstr, u16_t *ocstrlen, u16_t bufsize); +void snmp_mib2_set_syslocation_readonly(const u8_t *ocstr, const u16_t *ocstrlen); + +#endif /* SNMP_LWIP_MIB2 */ +#endif /* LWIP_SNMP */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_SNMP_MIB2_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmp_opts.h b/Other/tun2socks/core/c/include/lwip/apps/snmp_opts.h new file mode 100644 index 0000000..c892d22 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmp_opts.h @@ -0,0 +1,297 @@ +/** + * @file + * SNMP server options list + */ + +/* + * Copyright (c) 2015 Dirk Ziegelmeier + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Dirk Ziegelmeier + * + */ +#ifndef LWIP_HDR_SNMP_OPTS_H +#define LWIP_HDR_SNMP_OPTS_H + +#include "lwip/opt.h" + +/** + * @defgroup snmp_opts Options + * @ingroup snmp + * @{ + */ + +/** + * LWIP_SNMP==1: This enables the lwIP SNMP agent. UDP must be available + * for SNMP transport. + * If you want to use your own SNMP agent, leave this disabled. + * To integrate MIB2 of an external agent, you need to enable + * LWIP_MIB2_CALLBACKS and MIB2_STATS. This will give you the callbacks + * and statistics counters you need to get MIB2 working. + */ +#if !defined LWIP_SNMP || defined __DOXYGEN__ +#define LWIP_SNMP 0 +#endif + +/** + * SNMP_USE_NETCONN: Use netconn API instead of raw API. + * Makes SNMP agent run in a worker thread, so blocking operations + * can be done in MIB calls. + */ +#if !defined SNMP_USE_NETCONN || defined __DOXYGEN__ +#define SNMP_USE_NETCONN 0 +#endif + +/** + * SNMP_USE_RAW: Use raw API. + * SNMP agent does not run in a worker thread, so blocking operations + * should not be done in MIB calls. + */ +#if !defined SNMP_USE_RAW || defined __DOXYGEN__ +#define SNMP_USE_RAW 1 +#endif + +#if SNMP_USE_NETCONN && SNMP_USE_RAW +#error SNMP stack can use only one of the APIs {raw, netconn} +#endif + +#if LWIP_SNMP && !SNMP_USE_NETCONN && !SNMP_USE_RAW +#error SNMP stack needs a receive API and UDP {raw, netconn} +#endif + +#if SNMP_USE_NETCONN +/** + * SNMP_STACK_SIZE: Stack size of SNMP netconn worker thread + */ +#if !defined SNMP_STACK_SIZE || defined __DOXYGEN__ +#define SNMP_STACK_SIZE DEFAULT_THREAD_STACKSIZE +#endif + +/** + * SNMP_THREAD_PRIO: SNMP netconn worker thread priority + */ +#if !defined SNMP_THREAD_PRIO || defined __DOXYGEN__ +#define SNMP_THREAD_PRIO DEFAULT_THREAD_PRIO +#endif +#endif /* SNMP_USE_NETCONN */ + +/** + * SNMP_TRAP_DESTINATIONS: Number of trap destinations. At least one trap + * destination is required + */ +#if !defined SNMP_TRAP_DESTINATIONS || defined __DOXYGEN__ +#define SNMP_TRAP_DESTINATIONS 1 +#endif + +/** + * Only allow SNMP write actions that are 'safe' (e.g. disabling netifs is not + * a safe action and disabled when SNMP_SAFE_REQUESTS = 1). + * Unsafe requests are disabled by default! + */ +#if !defined SNMP_SAFE_REQUESTS || defined __DOXYGEN__ +#define SNMP_SAFE_REQUESTS 1 +#endif + +/** + * The maximum length of strings used. + */ +#if !defined SNMP_MAX_OCTET_STRING_LEN || defined __DOXYGEN__ +#define SNMP_MAX_OCTET_STRING_LEN 127 +#endif + +/** + * The maximum number of Sub ID's inside an object identifier. + * Indirectly this also limits the maximum depth of SNMP tree. + */ +#if !defined SNMP_MAX_OBJ_ID_LEN || defined __DOXYGEN__ +#define SNMP_MAX_OBJ_ID_LEN 50 +#endif + +#if !defined SNMP_MAX_VALUE_SIZE || defined __DOXYGEN__ +/** + * The minimum size of a value. + */ +#define SNMP_MIN_VALUE_SIZE (2 * sizeof(u32_t*)) /* size required to store the basic types (8 bytes for counter64) */ +/** + * The maximum size of a value. + */ +#define SNMP_MAX_VALUE_SIZE LWIP_MAX(LWIP_MAX((SNMP_MAX_OCTET_STRING_LEN), sizeof(u32_t)*(SNMP_MAX_OBJ_ID_LEN)), SNMP_MIN_VALUE_SIZE) +#endif + +/** + * The snmp read-access community. Used for write-access and traps, too + * unless SNMP_COMMUNITY_WRITE or SNMP_COMMUNITY_TRAP are enabled, respectively. + */ +#if !defined SNMP_COMMUNITY || defined __DOXYGEN__ +#define SNMP_COMMUNITY "public" +#endif + +/** + * The snmp write-access community. + * Set this community to "" in order to disallow any write access. + */ +#if !defined SNMP_COMMUNITY_WRITE || defined __DOXYGEN__ +#define SNMP_COMMUNITY_WRITE "private" +#endif + +/** + * The snmp community used for sending traps. + */ +#if !defined SNMP_COMMUNITY_TRAP || defined __DOXYGEN__ +#define SNMP_COMMUNITY_TRAP "public" +#endif + +/** + * The maximum length of community string. + * If community names shall be adjusted at runtime via snmp_set_community() calls, + * enter here the possible maximum length (+1 for terminating null character). + */ +#if !defined SNMP_MAX_COMMUNITY_STR_LEN || defined __DOXYGEN__ +#define SNMP_MAX_COMMUNITY_STR_LEN LWIP_MAX(LWIP_MAX(sizeof(SNMP_COMMUNITY), sizeof(SNMP_COMMUNITY_WRITE)), sizeof(SNMP_COMMUNITY_TRAP)) +#endif + +/** + * The OID identifiying the device. This may be the enterprise OID itself or any OID located below it in tree. + */ +#if !defined SNMP_DEVICE_ENTERPRISE_OID || defined __DOXYGEN__ +#define SNMP_LWIP_ENTERPRISE_OID 26381 +/** + * IANA assigned enterprise ID for lwIP is 26381 + * @see http://www.iana.org/assignments/enterprise-numbers + * + * @note this enterprise ID is assigned to the lwIP project, + * all object identifiers living under this ID are assigned + * by the lwIP maintainers! + * @note don't change this define, use snmp_set_device_enterprise_oid() + * + * If you need to create your own private MIB you'll need + * to apply for your own enterprise ID with IANA: + * http://www.iana.org/numbers.html + */ +#define SNMP_DEVICE_ENTERPRISE_OID {1, 3, 6, 1, 4, 1, SNMP_LWIP_ENTERPRISE_OID} +/** + * Length of SNMP_DEVICE_ENTERPRISE_OID + */ +#define SNMP_DEVICE_ENTERPRISE_OID_LEN 7 +#endif + +/** + * SNMP_DEBUG: Enable debugging for SNMP messages. + */ +#if !defined SNMP_DEBUG || defined __DOXYGEN__ +#define SNMP_DEBUG LWIP_DBG_OFF +#endif + +/** + * SNMP_MIB_DEBUG: Enable debugging for SNMP MIBs. + */ +#if !defined SNMP_MIB_DEBUG || defined __DOXYGEN__ +#define SNMP_MIB_DEBUG LWIP_DBG_OFF +#endif + +/** + * Indicates if the MIB2 implementation of LWIP SNMP stack is used. + */ +#if !defined SNMP_LWIP_MIB2 || defined __DOXYGEN__ +#define SNMP_LWIP_MIB2 LWIP_SNMP +#endif + +/** + * Value return for sysDesc field of MIB2. + */ +#if !defined SNMP_LWIP_MIB2_SYSDESC || defined __DOXYGEN__ +#define SNMP_LWIP_MIB2_SYSDESC "lwIP" +#endif + +/** + * Value return for sysName field of MIB2. + * To make sysName field settable, call snmp_mib2_set_sysname() to provide the necessary buffers. + */ +#if !defined SNMP_LWIP_MIB2_SYSNAME || defined __DOXYGEN__ +#define SNMP_LWIP_MIB2_SYSNAME "FQDN-unk" +#endif + +/** + * Value return for sysContact field of MIB2. + * To make sysContact field settable, call snmp_mib2_set_syscontact() to provide the necessary buffers. + */ +#if !defined SNMP_LWIP_MIB2_SYSCONTACT || defined __DOXYGEN__ +#define SNMP_LWIP_MIB2_SYSCONTACT "" +#endif + +/** + * Value return for sysLocation field of MIB2. + * To make sysLocation field settable, call snmp_mib2_set_syslocation() to provide the necessary buffers. + */ +#if !defined SNMP_LWIP_MIB2_SYSLOCATION || defined __DOXYGEN__ +#define SNMP_LWIP_MIB2_SYSLOCATION "" +#endif + +/** + * This value is used to limit the repetitions processed in GetBulk requests (value == 0 means no limitation). + * This may be useful to limit the load for a single request. + * According to SNMP RFC 1905 it is allowed to not return all requested variables from a GetBulk request if system load would be too high. + * so the effect is that the client will do more requests to gather all data. + * For the stack this could be useful in case that SNMP processing is done in TCP/IP thread. In this situation a request with many + * repetitions could block the thread for a longer time. Setting limit here will keep the stack more responsive. + */ +#if !defined SNMP_LWIP_GETBULK_MAX_REPETITIONS || defined __DOXYGEN__ +#define SNMP_LWIP_GETBULK_MAX_REPETITIONS 0 +#endif + +/** + * @} + */ + +/* + ------------------------------------ + ---------- SNMPv3 options ---------- + ------------------------------------ +*/ + +/** + * LWIP_SNMP_V3==1: This enables EXPERIMENTAL SNMPv3 support. LWIP_SNMP must + * also be enabled. + * THIS IS UNDER DEVELOPMENT AND SHOULD NOT BE ENABLED IN PRODUCTS. + */ +#ifndef LWIP_SNMP_V3 +#define LWIP_SNMP_V3 0 +#endif + +#ifndef LWIP_SNMP_V3_MBEDTLS +#define LWIP_SNMP_V3_MBEDTLS LWIP_SNMP_V3 +#endif + +#ifndef LWIP_SNMP_V3_CRYPTO +#define LWIP_SNMP_V3_CRYPTO LWIP_SNMP_V3_MBEDTLS +#endif + +#ifndef LWIP_SNMP_CONFIGURE_VERSIONS +#define LWIP_SNMP_CONFIGURE_VERSIONS 0 +#endif + +#endif /* LWIP_HDR_SNMP_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmp_scalar.h b/Other/tun2socks/core/c/include/lwip/apps/snmp_scalar.h new file mode 100644 index 0000000..40a060c --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmp_scalar.h @@ -0,0 +1,113 @@ +/** + * @file + * SNMP server MIB API to implement scalar nodes + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Martin Hentschel + * + */ + +#ifndef LWIP_HDR_APPS_SNMP_SCALAR_H +#define LWIP_HDR_APPS_SNMP_SCALAR_H + +#include "lwip/apps/snmp_opts.h" +#include "lwip/apps/snmp_core.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_SNMP /* don't build if not configured for use in lwipopts.h */ + +/** basic scalar node */ +struct snmp_scalar_node +{ + /** inherited "base class" members */ + struct snmp_leaf_node node; + u8_t asn1_type; + snmp_access_t access; + node_instance_get_value_method get_value; + node_instance_set_test_method set_test; + node_instance_set_value_method set_value; +}; + + +snmp_err_t snmp_scalar_get_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); +snmp_err_t snmp_scalar_get_next_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); + +#define SNMP_SCALAR_CREATE_NODE(oid, access, asn1_type, get_value_method, set_test_method, set_value_method) \ + {{{ SNMP_NODE_SCALAR, (oid) }, \ + snmp_scalar_get_instance, \ + snmp_scalar_get_next_instance }, \ + (asn1_type), (access), (get_value_method), (set_test_method), (set_value_method) } + +#define SNMP_SCALAR_CREATE_NODE_READONLY(oid, asn1_type, get_value_method) SNMP_SCALAR_CREATE_NODE(oid, SNMP_NODE_INSTANCE_READ_ONLY, asn1_type, get_value_method, NULL, NULL) + +/** scalar array node - a tree node which contains scalars only as children */ +struct snmp_scalar_array_node_def +{ + u32_t oid; + u8_t asn1_type; + snmp_access_t access; +}; + +typedef s16_t (*snmp_scalar_array_get_value_method)(const struct snmp_scalar_array_node_def*, void*); +typedef snmp_err_t (*snmp_scalar_array_set_test_method)(const struct snmp_scalar_array_node_def*, u16_t, void*); +typedef snmp_err_t (*snmp_scalar_array_set_value_method)(const struct snmp_scalar_array_node_def*, u16_t, void*); + +/** basic scalar array node */ +struct snmp_scalar_array_node +{ + /** inherited "base class" members */ + struct snmp_leaf_node node; + u16_t array_node_count; + const struct snmp_scalar_array_node_def* array_nodes; + snmp_scalar_array_get_value_method get_value; + snmp_scalar_array_set_test_method set_test; + snmp_scalar_array_set_value_method set_value; +}; + +snmp_err_t snmp_scalar_array_get_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); +snmp_err_t snmp_scalar_array_get_next_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); + +#define SNMP_SCALAR_CREATE_ARRAY_NODE(oid, array_nodes, get_value_method, set_test_method, set_value_method) \ + {{{ SNMP_NODE_SCALAR_ARRAY, (oid) }, \ + snmp_scalar_array_get_instance, \ + snmp_scalar_array_get_next_instance }, \ + (u16_t)LWIP_ARRAYSIZE(array_nodes), (array_nodes), (get_value_method), (set_test_method), (set_value_method) } + +#endif /* LWIP_SNMP */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_SNMP_SCALAR_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmp_snmpv2_framework.h b/Other/tun2socks/core/c/include/lwip/apps/snmp_snmpv2_framework.h new file mode 100644 index 0000000..47409cc --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmp_snmpv2_framework.h @@ -0,0 +1,32 @@ +/* +Generated by LwipMibCompiler +*/ + +#ifndef LWIP_HDR_APPS_SNMP_FRAMEWORK_MIB_H +#define LWIP_HDR_APPS_SNMP_FRAMEWORK_MIB_H + +#include "lwip/apps/snmp_opts.h" +#if LWIP_SNMP + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#include "lwip/apps/snmp_core.h" + +extern const struct snmp_obj_id usmNoAuthProtocol; +extern const struct snmp_obj_id usmHMACMD5AuthProtocol; +extern const struct snmp_obj_id usmHMACSHAAuthProtocol; + +extern const struct snmp_obj_id usmNoPrivProtocol; +extern const struct snmp_obj_id usmDESPrivProtocol; +extern const struct snmp_obj_id usmAESPrivProtocol; + +extern const struct snmp_mib snmpframeworkmib; + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LWIP_SNMP */ +#endif /* LWIP_HDR_APPS_SNMP_FRAMEWORK_MIB_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmp_snmpv2_usm.h b/Other/tun2socks/core/c/include/lwip/apps/snmp_snmpv2_usm.h new file mode 100644 index 0000000..88cfcd8 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmp_snmpv2_usm.h @@ -0,0 +1,24 @@ +/* +Generated by LwipMibCompiler +*/ + +#ifndef LWIP_HDR_APPS_SNMP_USER_BASED_SM_MIB_H +#define LWIP_HDR_APPS_SNMP_USER_BASED_SM_MIB_H + +#include "lwip/apps/snmp_opts.h" +#if LWIP_SNMP + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#include "lwip/apps/snmp_core.h" + +extern const struct snmp_mib snmpusmmib; + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LWIP_SNMP */ +#endif /* LWIP_HDR_APPS_SNMP_USER_BASED_SM_MIB_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmp_table.h b/Other/tun2socks/core/c/include/lwip/apps/snmp_table.h new file mode 100644 index 0000000..4988b51 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmp_table.h @@ -0,0 +1,134 @@ +/** + * @file + * SNMP server MIB API to implement table nodes + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Martin Hentschel + * + */ + +#ifndef LWIP_HDR_APPS_SNMP_TABLE_H +#define LWIP_HDR_APPS_SNMP_TABLE_H + +#include "lwip/apps/snmp_opts.h" +#include "lwip/apps/snmp_core.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_SNMP /* don't build if not configured for use in lwipopts.h */ + +/** default (customizable) read/write table */ +struct snmp_table_col_def +{ + u32_t index; + u8_t asn1_type; + snmp_access_t access; +}; + +/** table node */ +struct snmp_table_node +{ + /** inherited "base class" members */ + struct snmp_leaf_node node; + u16_t column_count; + const struct snmp_table_col_def* columns; + snmp_err_t (*get_cell_instance)(const u32_t* column, const u32_t* row_oid, u8_t row_oid_len, struct snmp_node_instance* cell_instance); + snmp_err_t (*get_next_cell_instance)(const u32_t* column, struct snmp_obj_id* row_oid, struct snmp_node_instance* cell_instance); + /** returns object value for the given object identifier */ + node_instance_get_value_method get_value; + /** tests length and/or range BEFORE setting */ + node_instance_set_test_method set_test; + /** sets object value, only called when set_test() was successful */ + node_instance_set_value_method set_value; +}; + +snmp_err_t snmp_table_get_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); +snmp_err_t snmp_table_get_next_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); + +#define SNMP_TABLE_CREATE(oid, columns, get_cell_instance_method, get_next_cell_instance_method, get_value_method, set_test_method, set_value_method) \ + {{{ SNMP_NODE_TABLE, (oid) }, \ + snmp_table_get_instance, \ + snmp_table_get_next_instance }, \ + (u16_t)LWIP_ARRAYSIZE(columns), (columns), \ + (get_cell_instance_method), (get_next_cell_instance_method), \ + (get_value_method), (set_test_method), (set_value_method)} + +#define SNMP_TABLE_GET_COLUMN_FROM_OID(oid) ((oid)[1]) /* first array value is (fixed) row entry (fixed to 1) and 2nd value is column, follow3ed by instance */ + + +/** simple read-only table */ +typedef enum { + SNMP_VARIANT_VALUE_TYPE_U32, + SNMP_VARIANT_VALUE_TYPE_S32, + SNMP_VARIANT_VALUE_TYPE_PTR, + SNMP_VARIANT_VALUE_TYPE_CONST_PTR +} snmp_table_column_data_type_t; + +struct snmp_table_simple_col_def +{ + u32_t index; + u8_t asn1_type; + snmp_table_column_data_type_t data_type; /* depending of what union member is used to store the value*/ +}; + +/** simple read-only table node */ +struct snmp_table_simple_node +{ + /* inherited "base class" members */ + struct snmp_leaf_node node; + u16_t column_count; + const struct snmp_table_simple_col_def* columns; + snmp_err_t (*get_cell_value)(const u32_t* column, const u32_t* row_oid, u8_t row_oid_len, union snmp_variant_value* value, u32_t* value_len); + snmp_err_t (*get_next_cell_instance_and_value)(const u32_t* column, struct snmp_obj_id* row_oid, union snmp_variant_value* value, u32_t* value_len); +}; + +snmp_err_t snmp_table_simple_get_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); +snmp_err_t snmp_table_simple_get_next_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); + +#define SNMP_TABLE_CREATE_SIMPLE(oid, columns, get_cell_value_method, get_next_cell_instance_and_value_method) \ + {{{ SNMP_NODE_TABLE, (oid) }, \ + snmp_table_simple_get_instance, \ + snmp_table_simple_get_next_instance }, \ + (u16_t)LWIP_ARRAYSIZE(columns), (columns), (get_cell_value_method), (get_next_cell_instance_and_value_method) } + +s16_t snmp_table_extract_value_from_s32ref(struct snmp_node_instance* instance, void* value); +s16_t snmp_table_extract_value_from_u32ref(struct snmp_node_instance* instance, void* value); +s16_t snmp_table_extract_value_from_refconstptr(struct snmp_node_instance* instance, void* value); + +#endif /* LWIP_SNMP */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_SNMP_TABLE_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmp_threadsync.h b/Other/tun2socks/core/c/include/lwip/apps/snmp_threadsync.h new file mode 100644 index 0000000..a25dbf2 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmp_threadsync.h @@ -0,0 +1,114 @@ +/** + * @file + * SNMP server MIB API to implement thread synchronization + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Dirk Ziegelmeier + * + */ + +#ifndef LWIP_HDR_APPS_SNMP_THREADSYNC_H +#define LWIP_HDR_APPS_SNMP_THREADSYNC_H + +#include "lwip/apps/snmp_opts.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_SNMP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/apps/snmp_core.h" +#include "lwip/sys.h" + +typedef void (*snmp_threadsync_called_fn)(void* arg); +typedef void (*snmp_threadsync_synchronizer_fn)(snmp_threadsync_called_fn fn, void* arg); + + +/** Thread sync runtime data. For internal usage only. */ +struct threadsync_data +{ + union { + snmp_err_t err; + s16_t s16; + } retval; + union { + const u32_t *root_oid; + void *value; + } arg1; + union { + u8_t root_oid_len; + u16_t len; + } arg2; + const struct snmp_threadsync_node *threadsync_node; + struct snmp_node_instance proxy_instance; +}; + +/** Thread sync instance. Needed EXCATLY once for every thread to be synced into. */ +struct snmp_threadsync_instance +{ + sys_sem_t sem; + sys_mutex_t sem_usage_mutex; + snmp_threadsync_synchronizer_fn sync_fn; + struct threadsync_data data; +}; + +/** SNMP thread sync proxy leaf node */ +struct snmp_threadsync_node +{ + /* inherited "base class" members */ + struct snmp_leaf_node node; + + const struct snmp_leaf_node *target; + struct snmp_threadsync_instance *instance; +}; + +snmp_err_t snmp_threadsync_get_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); +snmp_err_t snmp_threadsync_get_next_instance(const u32_t *root_oid, u8_t root_oid_len, struct snmp_node_instance* instance); + +/** Create thread sync proxy node */ +#define SNMP_CREATE_THREAD_SYNC_NODE(oid, target_leaf_node, threadsync_instance) \ + {{{ SNMP_NODE_THREADSYNC, (oid) }, \ + snmp_threadsync_get_instance, \ + snmp_threadsync_get_next_instance }, \ + (target_leaf_node), \ + (threadsync_instance) } + +/** Create thread sync instance data */ +void snmp_threadsync_init(struct snmp_threadsync_instance *instance, snmp_threadsync_synchronizer_fn sync_fn); + +#endif /* LWIP_SNMP */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_SNMP_THREADSYNC_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/snmpv3.h b/Other/tun2socks/core/c/include/lwip/apps/snmpv3.h new file mode 100644 index 0000000..e0dda64 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/snmpv3.h @@ -0,0 +1,114 @@ +/** + * @file + * Additional SNMPv3 functionality RFC3414 and RFC3826. + */ + +/* + * Copyright (c) 2016 Elias Oenal. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * Author: Elias Oenal + */ + +#ifndef LWIP_HDR_APPS_SNMP_V3_H +#define LWIP_HDR_APPS_SNMP_V3_H + +#include "lwip/apps/snmp_opts.h" +#include "lwip/err.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_SNMP && LWIP_SNMP_V3 + +typedef enum +{ + SNMP_V3_AUTH_ALGO_INVAL = 0, + SNMP_V3_AUTH_ALGO_MD5 = 1, + SNMP_V3_AUTH_ALGO_SHA = 2 +} snmpv3_auth_algo_t; + +typedef enum +{ + SNMP_V3_PRIV_ALGO_INVAL = 0, + SNMP_V3_PRIV_ALGO_DES = 1, + SNMP_V3_PRIV_ALGO_AES = 2 +} snmpv3_priv_algo_t; + +typedef enum +{ + SNMP_V3_USER_STORAGETYPE_OTHER = 1, + SNMP_V3_USER_STORAGETYPE_VOLATILE = 2, + SNMP_V3_USER_STORAGETYPE_NONVOLATILE = 3, + SNMP_V3_USER_STORAGETYPE_PERMANENT = 4, + SNMP_V3_USER_STORAGETYPE_READONLY = 5 +} snmpv3_user_storagetype_t; + +/* + * The following callback functions must be implemented by the application. + * There is a dummy implementation in snmpv3_dummy.c. + */ + +void snmpv3_get_engine_id(const char **id, u8_t *len); +err_t snmpv3_set_engine_id(const char* id, u8_t len); + +u32_t snmpv3_get_engine_boots(void); +void snmpv3_set_engine_boots(u32_t boots); + +u32_t snmpv3_get_engine_time(void); +void snmpv3_reset_engine_time(void); + +err_t snmpv3_get_user(const char* username, snmpv3_auth_algo_t *auth_algo, u8_t *auth_key, snmpv3_priv_algo_t *priv_algo, u8_t *priv_key); +u8_t snmpv3_get_amount_of_users(void); +err_t snmpv3_get_user_storagetype(const char *username, snmpv3_user_storagetype_t *storagetype); +err_t snmpv3_get_username(char *username, u8_t index); + +/* The following functions are provided by the SNMPv3 agent */ + +void snmpv3_engine_id_changed(void); +s32_t snmpv3_get_engine_time_internal(void); + +void snmpv3_password_to_key_md5( + const u8_t *password, /* IN */ + size_t passwordlen, /* IN */ + const u8_t *engineID, /* IN - pointer to snmpEngineID */ + u8_t engineLength, /* IN - length of snmpEngineID */ + u8_t *key); /* OUT - pointer to caller 16-octet buffer */ + +void snmpv3_password_to_key_sha( + const u8_t *password, /* IN */ + size_t passwordlen, /* IN */ + const u8_t *engineID, /* IN - pointer to snmpEngineID */ + u8_t engineLength, /* IN - length of snmpEngineID */ + u8_t *key); /* OUT - pointer to caller 20-octet buffer */ + +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_SNMP_V3_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/sntp.h b/Other/tun2socks/core/c/include/lwip/apps/sntp.h new file mode 100644 index 0000000..3c0f95f --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/sntp.h @@ -0,0 +1,80 @@ +/** + * @file + * SNTP client API + */ + +/* + * Copyright (c) 2007-2009 Frédéric Bernon, Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Frédéric Bernon, Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_APPS_SNTP_H +#define LWIP_HDR_APPS_SNTP_H + +#include "lwip/apps/sntp_opts.h" +#include "lwip/ip_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* SNTP operating modes: default is to poll using unicast. + The mode has to be set before calling sntp_init(). */ +#define SNTP_OPMODE_POLL 0 +#define SNTP_OPMODE_LISTENONLY 1 +void sntp_setoperatingmode(u8_t operating_mode); +u8_t sntp_getoperatingmode(void); + +void sntp_init(void); +void sntp_stop(void); +u8_t sntp_enabled(void); + +void sntp_setserver(u8_t idx, const ip_addr_t *addr); +const ip_addr_t* sntp_getserver(u8_t idx); + +#if SNTP_MONITOR_SERVER_REACHABILITY +u8_t sntp_getreachability(u8_t idx); +#endif /* SNTP_MONITOR_SERVER_REACHABILITY */ + +#if SNTP_SERVER_DNS +void sntp_setservername(u8_t idx, const char *server); +const char *sntp_getservername(u8_t idx); +#endif /* SNTP_SERVER_DNS */ + +#if SNTP_GET_SERVERS_FROM_DHCP +void sntp_servermode_dhcp(int set_servers_from_dhcp); +#else /* SNTP_GET_SERVERS_FROM_DHCP */ +#define sntp_servermode_dhcp(x) +#endif /* SNTP_GET_SERVERS_FROM_DHCP */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_SNTP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/sntp_opts.h b/Other/tun2socks/core/c/include/lwip/apps/sntp_opts.h new file mode 100644 index 0000000..ed98040 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/sntp_opts.h @@ -0,0 +1,209 @@ +/** + * @file + * SNTP client options list + */ + +/* + * Copyright (c) 2007-2009 Frédéric Bernon, Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Frédéric Bernon, Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_APPS_SNTP_OPTS_H +#define LWIP_HDR_APPS_SNTP_OPTS_H + +#include "lwip/opt.h" +#include "lwip/prot/iana.h" + +/** + * @defgroup sntp_opts Options + * @ingroup sntp + * @{ + */ + +/** SNTP macro to change system time in seconds + * Define SNTP_SET_SYSTEM_TIME_US(sec, us) to set the time in microseconds + * instead of this one if you need the additional precision. Alternatively, + * define SNTP_SET_SYSTEM_TIME_NTP(sec, frac) in order to work with native + * NTP timestamps instead. + */ +#if !defined SNTP_SET_SYSTEM_TIME || defined __DOXYGEN__ +#define SNTP_SET_SYSTEM_TIME(sec) LWIP_UNUSED_ARG(sec) +#endif + +/** The maximum number of SNTP servers that can be set */ +#if !defined SNTP_MAX_SERVERS || defined __DOXYGEN__ +#define SNTP_MAX_SERVERS LWIP_DHCP_MAX_NTP_SERVERS +#endif + +/** Set this to 1 to implement the callback function called by dhcp when + * NTP servers are received. */ +#if !defined SNTP_GET_SERVERS_FROM_DHCP || defined __DOXYGEN__ +#define SNTP_GET_SERVERS_FROM_DHCP LWIP_DHCP_GET_NTP_SRV +#endif + +/** Set this to 1 to support DNS names (or IP address strings) to set sntp servers + * One server address/name can be defined as default if SNTP_SERVER_DNS == 1: + * \#define SNTP_SERVER_ADDRESS "pool.ntp.org" + */ +#if !defined SNTP_SERVER_DNS || defined __DOXYGEN__ +#define SNTP_SERVER_DNS 0 +#endif + +/** + * SNTP_DEBUG: Enable debugging for SNTP. + */ +#if !defined SNTP_DEBUG || defined __DOXYGEN__ +#define SNTP_DEBUG LWIP_DBG_OFF +#endif + +/** SNTP server port */ +#if !defined SNTP_PORT || defined __DOXYGEN__ +#define SNTP_PORT LWIP_IANA_PORT_SNTP +#endif + +/** Sanity check: + * Define this to + * - 0 to turn off sanity checks (default; smaller code) + * - >= 1 to check address and port of the response packet to ensure the + * response comes from the server we sent the request to. + * - >= 2 to check returned Originate Timestamp against Transmit Timestamp + * sent to the server (to ensure response to older request). + * - >= 3 @todo: discard reply if any of the VN, Stratum, or Transmit Timestamp + * fields is 0 or the Mode field is not 4 (unicast) or 5 (broadcast). + * - >= 4 @todo: to check that the Root Delay and Root Dispersion fields are each + * greater than or equal to 0 and less than infinity, where infinity is + * currently a cozy number like one second. This check avoids using a + * server whose synchronization source has expired for a very long time. + */ +#if !defined SNTP_CHECK_RESPONSE || defined __DOXYGEN__ +#define SNTP_CHECK_RESPONSE 0 +#endif + +/** Enable round-trip delay compensation. + * Compensate for the round-trip delay by calculating the clock offset from + * the originate, receive, transmit and destination timestamps, as per RFC. + * + * The calculation requires compiler support for 64-bit integers. Also, either + * SNTP_SET_SYSTEM_TIME_US or SNTP_SET_SYSTEM_TIME_NTP has to be implemented + * for setting the system clock with sub-second precision. Likewise, either + * SNTP_GET_SYSTEM_TIME or SNTP_GET_SYSTEM_TIME_NTP needs to be implemented + * with sub-second precision. + * + * Although not strictly required, it makes sense to combine this option with + * SNTP_CHECK_RESPONSE >= 2 for sanity-checking of the received timestamps. + * Also, in order for the round-trip calculation to work, the difference + * between the local clock and the NTP server clock must not be larger than + * about 34 years. If that limit is exceeded, the implementation will fall back + * to setting the clock without compensation. In order to ensure that the local + * clock is always within the permitted range for compensation, even at first + * try, it may be necessary to store at least the current year in non-volatile + * memory. + */ +#if !defined SNTP_COMP_ROUNDTRIP || defined __DOXYGEN__ +#define SNTP_COMP_ROUNDTRIP 0 +#endif + +/** According to the RFC, this shall be a random delay + * between 1 and 5 minutes (in milliseconds) to prevent load peaks. + * This can be defined to a random generation function, + * which must return the delay in milliseconds as u32_t. + * Turned off by default. + */ +#if !defined SNTP_STARTUP_DELAY || defined __DOXYGEN__ +#ifdef LWIP_RAND +#define SNTP_STARTUP_DELAY 1 +#else +#define SNTP_STARTUP_DELAY 0 +#endif +#endif + +/** If you want the startup delay to be a function, define this + * to a function (including the brackets) and define SNTP_STARTUP_DELAY to 1. + */ +#if !defined SNTP_STARTUP_DELAY_FUNC || defined __DOXYGEN__ +#define SNTP_STARTUP_DELAY_FUNC (LWIP_RAND() % 5000) +#endif + +/** SNTP receive timeout - in milliseconds + * Also used as retry timeout - this shouldn't be too low. + * Default is 15 seconds. Must not be beolw 15 seconds by specification (i.e. 15000) + */ +#if !defined SNTP_RECV_TIMEOUT || defined __DOXYGEN__ +#define SNTP_RECV_TIMEOUT 15000 +#endif + +/** SNTP update delay - in milliseconds + * Default is 1 hour. Must not be beolw 60 seconds by specification (i.e. 60000) + */ +#if !defined SNTP_UPDATE_DELAY || defined __DOXYGEN__ +#define SNTP_UPDATE_DELAY 3600000 +#endif + +/** SNTP macro to get system time, used with SNTP_CHECK_RESPONSE >= 2 + * to send in request and compare in response. Also used for round-trip + * delay compensation if SNTP_COMP_ROUNDTRIP != 0. + * Alternatively, define SNTP_GET_SYSTEM_TIME_NTP(sec, frac) in order to + * work with native NTP timestamps instead. + */ +#if !defined SNTP_GET_SYSTEM_TIME || defined __DOXYGEN__ +#define SNTP_GET_SYSTEM_TIME(sec, us) do { (sec) = 0; (us) = 0; } while(0) +#endif + +/** Default retry timeout (in milliseconds) if the response + * received is invalid. + * This is doubled with each retry until SNTP_RETRY_TIMEOUT_MAX is reached. + */ +#if !defined SNTP_RETRY_TIMEOUT || defined __DOXYGEN__ +#define SNTP_RETRY_TIMEOUT SNTP_RECV_TIMEOUT +#endif + +/** Maximum retry timeout (in milliseconds). */ +#if !defined SNTP_RETRY_TIMEOUT_MAX || defined __DOXYGEN__ +#define SNTP_RETRY_TIMEOUT_MAX (SNTP_RETRY_TIMEOUT * 10) +#endif + +/** Increase retry timeout with every retry sent + * Default is on to conform to RFC. + */ +#if !defined SNTP_RETRY_TIMEOUT_EXP || defined __DOXYGEN__ +#define SNTP_RETRY_TIMEOUT_EXP 1 +#endif + +/** Keep a reachability shift register per server + * Default is on to conform to RFC. + */ +#if !defined SNTP_MONITOR_SERVER_REACHABILITY || defined __DOXYGEN__ +#define SNTP_MONITOR_SERVER_REACHABILITY 1 +#endif + +/** + * @} + */ + +#endif /* LWIP_HDR_APPS_SNTP_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/tftp_opts.h b/Other/tun2socks/core/c/include/lwip/apps/tftp_opts.h new file mode 100644 index 0000000..198f632 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/tftp_opts.h @@ -0,0 +1,106 @@ +/** + * + * @file tftp_opts.h + * + * @author Logan Gunthorpe + * + * @brief Trivial File Transfer Protocol (RFC 1350) implementation options + * + * Copyright (c) Deltatee Enterprises Ltd. 2013 + * All rights reserved. + * + */ + +/* + * Redistribution and use in source and binary forms, with or without + * modification,are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Author: Logan Gunthorpe + * + */ + +#ifndef LWIP_HDR_APPS_TFTP_OPTS_H +#define LWIP_HDR_APPS_TFTP_OPTS_H + +#include "lwip/opt.h" +#include "lwip/prot/iana.h" + +/** + * @defgroup tftp_opts Options + * @ingroup tftp + * @{ + */ + +/** + * Enable TFTP debug messages + */ +#if !defined TFTP_DEBUG || defined __DOXYGEN__ +#define TFTP_DEBUG LWIP_DBG_OFF +#endif + +/** + * TFTP server port + */ +#if !defined TFTP_PORT || defined __DOXYGEN__ +#define TFTP_PORT LWIP_IANA_PORT_TFTP +#endif + +/** + * TFTP timeout + */ +#if !defined TFTP_TIMEOUT_MSECS || defined __DOXYGEN__ +#define TFTP_TIMEOUT_MSECS 10000 +#endif + +/** + * Max. number of retries when a file is read from server + */ +#if !defined TFTP_MAX_RETRIES || defined __DOXYGEN__ +#define TFTP_MAX_RETRIES 5 +#endif + +/** + * TFTP timer cyclic interval + */ +#if !defined TFTP_TIMER_MSECS || defined __DOXYGEN__ +#define TFTP_TIMER_MSECS (TFTP_TIMEOUT_MSECS / 10) +#endif + +/** + * Max. length of TFTP filename + */ +#if !defined TFTP_MAX_FILENAME_LEN || defined __DOXYGEN__ +#define TFTP_MAX_FILENAME_LEN 20 +#endif + +/** + * Max. length of TFTP mode + */ +#if !defined TFTP_MAX_MODE_LEN || defined __DOXYGEN__ +#define TFTP_MAX_MODE_LEN 7 +#endif + +/** + * @} + */ + +#endif /* LWIP_HDR_APPS_TFTP_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/apps/tftp_server.h b/Other/tun2socks/core/c/include/lwip/apps/tftp_server.h new file mode 100644 index 0000000..0a7fbee --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/apps/tftp_server.h @@ -0,0 +1,95 @@ +/** + * + * @file tftp_server.h + * + * @author Logan Gunthorpe + * + * @brief Trivial File Transfer Protocol (RFC 1350) + * + * Copyright (c) Deltatee Enterprises Ltd. 2013 + * All rights reserved. + * + */ + +/* + * Redistribution and use in source and binary forms, with or without + * modification,are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Author: Logan Gunthorpe + * + */ + +#ifndef LWIP_HDR_APPS_TFTP_SERVER_H +#define LWIP_HDR_APPS_TFTP_SERVER_H + +#include "lwip/apps/tftp_opts.h" +#include "lwip/err.h" +#include "lwip/pbuf.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** @ingroup tftp + * TFTP context containing callback functions for TFTP transfers + */ +struct tftp_context { + /** + * Open file for read/write. + * @param fname Filename + * @param mode Mode string from TFTP RFC 1350 (netascii, octet, mail) + * @param write Flag indicating read (0) or write (!= 0) access + * @returns File handle supplied to other functions + */ + void* (*open)(const char* fname, const char* mode, u8_t write); + /** + * Close file handle + * @param handle File handle returned by open() + */ + void (*close)(void* handle); + /** + * Read from file + * @param handle File handle returned by open() + * @param buf Target buffer to copy read data to + * @param bytes Number of bytes to copy to buf + * @returns >= 0: Success; < 0: Error + */ + int (*read)(void* handle, void* buf, int bytes); + /** + * Write to file + * @param handle File handle returned by open() + * @param pbuf PBUF adjusted such that payload pointer points + * to the beginning of write data. In other words, + * TFTP headers are stripped off. + * @returns >= 0: Success; < 0: Error + */ + int (*write)(void* handle, struct pbuf* p); +}; + +err_t tftp_init(const struct tftp_context* ctx); +void tftp_cleanup(void); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_APPS_TFTP_SERVER_H */ diff --git a/Other/tun2socks/core/c/include/lwip/arch.h b/Other/tun2socks/core/c/include/lwip/arch.h new file mode 100644 index 0000000..58dae33 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/arch.h @@ -0,0 +1,393 @@ +/** + * @file + * Support for different processor and compiler architectures + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_ARCH_H +#define LWIP_HDR_ARCH_H + +#ifndef LITTLE_ENDIAN +#define LITTLE_ENDIAN 1234 +#endif + +#ifndef BIG_ENDIAN +#define BIG_ENDIAN 4321 +#endif + +#include "arch/cc.h" + +/** + * @defgroup compiler_abstraction Compiler/platform abstraction + * @ingroup sys_layer + * All defines related to this section must not be placed in lwipopts.h, + * but in arch/cc.h! + * If the compiler does not provide memset() this file must include a + * definition of it, or include a file which defines it. + * These options cannot be \#defined in lwipopts.h since they are not options + * of lwIP itself, but options of the lwIP port to your system. + * @{ + */ + +/** Define the byte order of the system. + * Needed for conversion of network data to host byte order. + * Allowed values: LITTLE_ENDIAN and BIG_ENDIAN + */ +#ifndef BYTE_ORDER +#define BYTE_ORDER LITTLE_ENDIAN +#endif + +/** Define random number generator function of your system */ +#ifdef __DOXYGEN__ +#define LWIP_RAND() ((u32_t)rand()) +#endif + +/** Platform specific diagnostic output.\n + * Note the default implementation pulls in printf, which may + * in turn pull in a lot of standard libary code. In resource-constrained + * systems, this should be defined to something less resource-consuming. + */ +#ifndef LWIP_PLATFORM_DIAG +#define LWIP_PLATFORM_DIAG(x) do {printf x;} while(0) +#include +#include +#endif + +/** Platform specific assertion handling.\n + * Note the default implementation pulls in printf, fflush and abort, which may + * in turn pull in a lot of standard libary code. In resource-constrained + * systems, this should be defined to something less resource-consuming. + */ +#ifndef LWIP_PLATFORM_ASSERT +#define LWIP_PLATFORM_ASSERT(x) do {printf("Assertion \"%s\" failed at line %d in %s\n", \ + x, __LINE__, __FILE__); fflush(NULL); abort();} while(0) +#include +#include +#endif + +/** Define this to 1 in arch/cc.h of your port if you do not want to + * include stddef.h header to get size_t. You need to typedef size_t + * by yourself in this case. + */ +#ifndef LWIP_NO_STDDEF_H +#define LWIP_NO_STDDEF_H 0 +#endif + +#if !LWIP_NO_STDDEF_H +#include /* for size_t */ +#endif + +/** Define this to 1 in arch/cc.h of your port if your compiler does not provide + * the stdint.h header. You need to typedef the generic types listed in + * lwip/arch.h yourself in this case (u8_t, u16_t...). + */ +#ifndef LWIP_NO_STDINT_H +#define LWIP_NO_STDINT_H 0 +#endif + +/* Define generic types used in lwIP */ +#if !LWIP_NO_STDINT_H +#include +/* stdint.h is C99 which should also provide support for 64-bit integers */ +#if !defined(LWIP_HAVE_INT64) && defined(UINT64_MAX) +#define LWIP_HAVE_INT64 1 +#endif +typedef uint8_t u8_t; +typedef int8_t s8_t; +typedef uint16_t u16_t; +typedef int16_t s16_t; +typedef uint32_t u32_t; +typedef int32_t s32_t; +#if LWIP_HAVE_INT64 +typedef uint64_t u64_t; +typedef int64_t s64_t; +#endif +typedef uintptr_t mem_ptr_t; +#endif + +/** Define this to 1 in arch/cc.h of your port if your compiler does not provide + * the inttypes.h header. You need to define the format strings listed in + * lwip/arch.h yourself in this case (X8_F, U16_F...). + */ +#ifndef LWIP_NO_INTTYPES_H +#define LWIP_NO_INTTYPES_H 0 +#endif + +/* Define (sn)printf formatters for these lwIP types */ +#if !LWIP_NO_INTTYPES_H +#include +#ifndef X8_F +#define X8_F "02" PRIx8 +#endif +#ifndef U16_F +#define U16_F PRIu16 +#endif +#ifndef S16_F +#define S16_F PRId16 +#endif +#ifndef X16_F +#define X16_F PRIx16 +#endif +#ifndef U32_F +#define U32_F PRIu32 +#endif +#ifndef S32_F +#define S32_F PRId32 +#endif +#ifndef X32_F +#define X32_F PRIx32 +#endif +#ifndef SZT_F +#define SZT_F PRIuPTR +#endif +#endif + +/** Define this to 1 in arch/cc.h of your port if your compiler does not provide + * the limits.h header. You need to define the type limits yourself in this case + * (e.g. INT_MAX, SSIZE_MAX). + */ +#ifndef LWIP_NO_LIMITS_H +#define LWIP_NO_LIMITS_H 0 +#endif + +/* Include limits.h? */ +#if !LWIP_NO_LIMITS_H +#include +#endif + +/* Do we need to define ssize_t? This is a compatibility hack: + * Unfortunately, this type seems to be unavailable on some systems (even if + * sys/types or unistd.h are available). + * Being like that, we define it to 'int' if SSIZE_MAX is not defined. + */ +#ifdef SSIZE_MAX +/* If SSIZE_MAX is defined, unistd.h should provide the type as well */ +#ifndef LWIP_NO_UNISTD_H +#define LWIP_NO_UNISTD_H 0 +#endif +#if !LWIP_NO_UNISTD_H +#include +#endif +#else /* SSIZE_MAX */ +typedef int ssize_t; +#define SSIZE_MAX INT_MAX +#endif /* SSIZE_MAX */ + +/* some maximum values needed in lwip code */ +#define LWIP_UINT32_MAX 0xffffffff + +/** Define this to 1 in arch/cc.h of your port if your compiler does not provide + * the ctype.h header. If ctype.h is available, a few character functions + * are mapped to the appropriate functions (lwip_islower, lwip_isdigit...), if + * not, a private implementation is provided. + */ +#ifndef LWIP_NO_CTYPE_H +#define LWIP_NO_CTYPE_H 0 +#endif + +#if LWIP_NO_CTYPE_H +#define lwip_in_range(c, lo, up) ((u8_t)(c) >= (lo) && (u8_t)(c) <= (up)) +#define lwip_isdigit(c) lwip_in_range((c), '0', '9') +#define lwip_isxdigit(c) (lwip_isdigit(c) || lwip_in_range((c), 'a', 'f') || lwip_in_range((c), 'A', 'F')) +#define lwip_islower(c) lwip_in_range((c), 'a', 'z') +#define lwip_isspace(c) ((c) == ' ' || (c) == '\f' || (c) == '\n' || (c) == '\r' || (c) == '\t' || (c) == '\v') +#define lwip_isupper(c) lwip_in_range((c), 'A', 'Z') +#define lwip_tolower(c) (lwip_isupper(c) ? (c) - 'A' + 'a' : c) +#define lwip_toupper(c) (lwip_islower(c) ? (c) - 'a' + 'A' : c) +#else +#include +#define lwip_isdigit(c) isdigit((unsigned char)(c)) +#define lwip_isxdigit(c) isxdigit((unsigned char)(c)) +#define lwip_islower(c) islower((unsigned char)(c)) +#define lwip_isspace(c) isspace((unsigned char)(c)) +#define lwip_isupper(c) isupper((unsigned char)(c)) +#define lwip_tolower(c) tolower((unsigned char)(c)) +#define lwip_toupper(c) toupper((unsigned char)(c)) +#endif + +/** C++ const_cast(val) equivalent to remove constness from a value (GCC -Wcast-qual) */ +#ifndef LWIP_CONST_CAST +#define LWIP_CONST_CAST(target_type, val) ((target_type)((ptrdiff_t)val)) +#endif + +/** Get rid of alignment cast warnings (GCC -Wcast-align) */ +#ifndef LWIP_ALIGNMENT_CAST +#define LWIP_ALIGNMENT_CAST(target_type, val) LWIP_CONST_CAST(target_type, val) +#endif + +/** Get rid of warnings related to pointer-to-numeric and vice-versa casts, + * e.g. "conversion from 'u8_t' to 'void *' of greater size" + */ +#ifndef LWIP_PTR_NUMERIC_CAST +#define LWIP_PTR_NUMERIC_CAST(target_type, val) LWIP_CONST_CAST(target_type, val) +#endif + +/** Avoid warnings/errors related to implicitly casting away packed attributes by doing a explicit cast */ +#ifndef LWIP_PACKED_CAST +#define LWIP_PACKED_CAST(target_type, val) LWIP_CONST_CAST(target_type, val) +#endif + +/** Allocates a memory buffer of specified size that is of sufficient size to align + * its start address using LWIP_MEM_ALIGN. + * You can declare your own version here e.g. to enforce alignment without adding + * trailing padding bytes (see LWIP_MEM_ALIGN_BUFFER) or your own section placement + * requirements.\n + * e.g. if you use gcc and need 32 bit alignment:\n + * \#define LWIP_DECLARE_MEMORY_ALIGNED(variable_name, size) u8_t variable_name[size] \_\_attribute\_\_((aligned(4)))\n + * or more portable:\n + * \#define LWIP_DECLARE_MEMORY_ALIGNED(variable_name, size) u32_t variable_name[(size + sizeof(u32_t) - 1) / sizeof(u32_t)] + */ +#ifndef LWIP_DECLARE_MEMORY_ALIGNED +#define LWIP_DECLARE_MEMORY_ALIGNED(variable_name, size) u8_t variable_name[LWIP_MEM_ALIGN_BUFFER(size)] +#endif + +/** Calculate memory size for an aligned buffer - returns the next highest + * multiple of MEM_ALIGNMENT (e.g. LWIP_MEM_ALIGN_SIZE(3) and + * LWIP_MEM_ALIGN_SIZE(4) will both yield 4 for MEM_ALIGNMENT == 4). + */ +#ifndef LWIP_MEM_ALIGN_SIZE +#define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1U) & ~(MEM_ALIGNMENT-1U)) +#endif + +/** Calculate safe memory size for an aligned buffer when using an unaligned + * type as storage. This includes a safety-margin on (MEM_ALIGNMENT - 1) at the + * start (e.g. if buffer is u8_t[] and actual data will be u32_t*) + */ +#ifndef LWIP_MEM_ALIGN_BUFFER +#define LWIP_MEM_ALIGN_BUFFER(size) (((size) + MEM_ALIGNMENT - 1U)) +#endif + +/** Align a memory pointer to the alignment defined by MEM_ALIGNMENT + * so that ADDR % MEM_ALIGNMENT == 0 + */ +#ifndef LWIP_MEM_ALIGN +#define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1))) +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/** Packed structs support. + * Placed BEFORE declaration of a packed struct.\n + * For examples of packed struct declarations, see include/lwip/prot/ subfolder.\n + * A port to GCC/clang is included in lwIP, if you use these compilers there is nothing to do here. + */ +#ifndef PACK_STRUCT_BEGIN +#define PACK_STRUCT_BEGIN +#endif /* PACK_STRUCT_BEGIN */ + +/** Packed structs support. + * Placed AFTER declaration of a packed struct.\n + * For examples of packed struct declarations, see include/lwip/prot/ subfolder.\n + * A port to GCC/clang is included in lwIP, if you use these compilers there is nothing to do here. + */ +#ifndef PACK_STRUCT_END +#define PACK_STRUCT_END +#endif /* PACK_STRUCT_END */ + +/** Packed structs support. + * Placed between end of declaration of a packed struct and trailing semicolon.\n + * For examples of packed struct declarations, see include/lwip/prot/ subfolder.\n + * A port to GCC/clang is included in lwIP, if you use these compilers there is nothing to do here. + */ +#ifndef PACK_STRUCT_STRUCT +#if defined(__GNUC__) || defined(__clang__) +#define PACK_STRUCT_STRUCT __attribute__((packed)) +#else +#define PACK_STRUCT_STRUCT +#endif +#endif /* PACK_STRUCT_STRUCT */ + +/** Packed structs support. + * Wraps u32_t and u16_t members.\n + * For examples of packed struct declarations, see include/lwip/prot/ subfolder.\n + * A port to GCC/clang is included in lwIP, if you use these compilers there is nothing to do here. + */ +#ifndef PACK_STRUCT_FIELD +#define PACK_STRUCT_FIELD(x) x +#endif /* PACK_STRUCT_FIELD */ + +/** Packed structs support. + * Wraps u8_t members, where some compilers warn that packing is not necessary.\n + * For examples of packed struct declarations, see include/lwip/prot/ subfolder.\n + * A port to GCC/clang is included in lwIP, if you use these compilers there is nothing to do here. + */ +#ifndef PACK_STRUCT_FLD_8 +#define PACK_STRUCT_FLD_8(x) PACK_STRUCT_FIELD(x) +#endif /* PACK_STRUCT_FLD_8 */ + +/** Packed structs support. + * Wraps members that are packed structs themselves, where some compilers warn that packing is not necessary.\n + * For examples of packed struct declarations, see include/lwip/prot/ subfolder.\n + * A port to GCC/clang is included in lwIP, if you use these compilers there is nothing to do here. + */ +#ifndef PACK_STRUCT_FLD_S +#define PACK_STRUCT_FLD_S(x) PACK_STRUCT_FIELD(x) +#endif /* PACK_STRUCT_FLD_S */ + +/** PACK_STRUCT_USE_INCLUDES==1: Packed structs support using \#include files before and after struct to be packed.\n + * The file included BEFORE the struct is "arch/bpstruct.h".\n + * The file included AFTER the struct is "arch/epstruct.h".\n + * This can be used to implement struct packing on MS Visual C compilers, see + * the Win32 port in the lwIP contrib repository for reference. + * For examples of packed struct declarations, see include/lwip/prot/ subfolder.\n + * A port to GCC/clang is included in lwIP, if you use these compilers there is nothing to do here. + */ +#ifdef __DOXYGEN__ +#define PACK_STRUCT_USE_INCLUDES +#endif + +/** Eliminates compiler warning about unused arguments (GCC -Wextra -Wunused). */ +#ifndef LWIP_UNUSED_ARG +#define LWIP_UNUSED_ARG(x) (void)x +#endif /* LWIP_UNUSED_ARG */ + +/** LWIP_PROVIDE_ERRNO==1: Let lwIP provide ERRNO values and the 'errno' variable. + * If this is disabled, cc.h must either define 'errno', include , + * define LWIP_ERRNO_STDINCLUDE to get included or + * define LWIP_ERRNO_INCLUDE to or equivalent. + */ +#if defined __DOXYGEN__ +#define LWIP_PROVIDE_ERRNO +#endif + +/** + * @} + */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_ARCH_H */ diff --git a/Other/tun2socks/core/c/include/lwip/autoip.h b/Other/tun2socks/core/c/include/lwip/autoip.h new file mode 100644 index 0000000..1d85bcc --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/autoip.h @@ -0,0 +1,99 @@ +/** + * @file + * + * AutoIP Automatic LinkLocal IP Configuration + */ + +/* + * + * Copyright (c) 2007 Dominik Spies + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * Author: Dominik Spies + * + * This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform + * with RFC 3927. + * + */ + +#ifndef LWIP_HDR_AUTOIP_H +#define LWIP_HDR_AUTOIP_H + +#include "lwip/opt.h" + +#if LWIP_IPV4 && LWIP_AUTOIP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/netif.h" +/* #include "lwip/udp.h" */ +#include "lwip/etharp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** AutoIP Timing */ +#define AUTOIP_TMR_INTERVAL 100 +#define AUTOIP_TICKS_PER_SECOND (1000 / AUTOIP_TMR_INTERVAL) + +/** AutoIP state information per netif */ +struct autoip +{ + /** the currently selected, probed, announced or used LL IP-Address */ + ip4_addr_t llipaddr; + /** current AutoIP state machine state */ + u8_t state; + /** sent number of probes or announces, dependent on state */ + u8_t sent_num; + /** ticks to wait, tick is AUTOIP_TMR_INTERVAL long */ + u16_t ttw; + /** ticks until a conflict can be solved by defending */ + u8_t lastconflict; + /** total number of probed/used Link Local IP-Addresses */ + u8_t tried_llipaddr; +}; + + +void autoip_set_struct(struct netif *netif, struct autoip *autoip); +/** Remove a struct autoip previously set to the netif using autoip_set_struct() */ +#define autoip_remove_struct(netif) do { (netif)->autoip = NULL; } while (0) +err_t autoip_start(struct netif *netif); +err_t autoip_stop(struct netif *netif); +void autoip_arp_reply(struct netif *netif, struct etharp_hdr *hdr); +void autoip_tmr(void); +void autoip_network_changed(struct netif *netif); +u8_t autoip_supplied_address(const struct netif *netif); + +/* for lwIP internal use by ip4.c */ +u8_t autoip_accept_packet(struct netif *netif, const ip4_addr_t *addr); + +#define netif_autoip_data(netif) ((struct autoip*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_AUTOIP)) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV4 && LWIP_AUTOIP */ + +#endif /* LWIP_HDR_AUTOIP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/debug.h b/Other/tun2socks/core/c/include/lwip/debug.h new file mode 100644 index 0000000..baa6a40 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/debug.h @@ -0,0 +1,161 @@ +/** + * @file + * Debug messages infrastructure + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_DEBUG_H +#define LWIP_HDR_DEBUG_H + +#include "lwip/arch.h" +#include "lwip/opt.h" + +/** + * @defgroup debugging_levels LWIP_DBG_MIN_LEVEL and LWIP_DBG_TYPES_ON values + * @ingroup lwip_opts_debugmsg + * @{ + */ + +/** @name Debug level (LWIP_DBG_MIN_LEVEL) + * @{ + */ +/** Debug level: ALL messages*/ +#define LWIP_DBG_LEVEL_ALL 0x00 +/** Debug level: Warnings. bad checksums, dropped packets, ... */ +#define LWIP_DBG_LEVEL_WARNING 0x01 +/** Debug level: Serious. memory allocation failures, ... */ +#define LWIP_DBG_LEVEL_SERIOUS 0x02 +/** Debug level: Severe */ +#define LWIP_DBG_LEVEL_SEVERE 0x03 +/** + * @} + */ + +#define LWIP_DBG_MASK_LEVEL 0x03 +/* compatibility define only */ +#define LWIP_DBG_LEVEL_OFF LWIP_DBG_LEVEL_ALL + +/** @name Enable/disable debug messages completely (LWIP_DBG_TYPES_ON) + * @{ + */ +/** flag for LWIP_DEBUGF to enable that debug message */ +#define LWIP_DBG_ON 0x80U +/** flag for LWIP_DEBUGF to disable that debug message */ +#define LWIP_DBG_OFF 0x00U +/** + * @} + */ + +/** @name Debug message types (LWIP_DBG_TYPES_ON) + * @{ + */ +/** flag for LWIP_DEBUGF indicating a tracing message (to follow program flow) */ +#define LWIP_DBG_TRACE 0x40U +/** flag for LWIP_DEBUGF indicating a state debug message (to follow module states) */ +#define LWIP_DBG_STATE 0x20U +/** flag for LWIP_DEBUGF indicating newly added code, not thoroughly tested yet */ +#define LWIP_DBG_FRESH 0x10U +/** flag for LWIP_DEBUGF to halt after printing this debug message */ +#define LWIP_DBG_HALT 0x08U +/** + * @} + */ + +/** + * @} + */ + +/** + * @defgroup lwip_assertions Assertion handling + * @ingroup lwip_opts_debug + * @{ + */ +/** + * LWIP_NOASSERT: Disable LWIP_ASSERT checks: + * To disable assertions define LWIP_NOASSERT in arch/cc.h. + */ +#ifdef __DOXYGEN__ +#define LWIP_NOASSERT +#undef LWIP_NOASSERT +#endif +/** + * @} + */ + +#ifndef LWIP_NOASSERT +#define LWIP_ASSERT(message, assertion) do { if (!(assertion)) { \ + LWIP_PLATFORM_ASSERT(message); }} while(0) +#else /* LWIP_NOASSERT */ +#define LWIP_ASSERT(message, assertion) +#endif /* LWIP_NOASSERT */ + +#ifndef LWIP_ERROR +#ifndef LWIP_NOASSERT +#define LWIP_PLATFORM_ERROR(message) LWIP_PLATFORM_ASSERT(message) +#elif defined LWIP_DEBUG +#define LWIP_PLATFORM_ERROR(message) LWIP_PLATFORM_DIAG((message)) +#else +#define LWIP_PLATFORM_ERROR(message) +#endif + +/* if "expression" isn't true, then print "message" and execute "handler" expression */ +#define LWIP_ERROR(message, expression, handler) do { if (!(expression)) { \ + LWIP_PLATFORM_ERROR(message); handler;}} while(0) +#endif /* LWIP_ERROR */ + +/** Enable debug message printing, but only if debug message type is enabled + * AND is of correct type AND is at least LWIP_DBG_LEVEL. + */ +#ifdef __DOXYGEN__ +#define LWIP_DEBUG +#undef LWIP_DEBUG +#endif + +#ifdef LWIP_DEBUG +#define LWIP_DEBUGF(debug, message) do { \ + if ( \ + ((debug) & LWIP_DBG_ON) && \ + ((debug) & LWIP_DBG_TYPES_ON) && \ + ((s16_t)((debug) & LWIP_DBG_MASK_LEVEL) >= LWIP_DBG_MIN_LEVEL)) { \ + LWIP_PLATFORM_DIAG(message); \ + if ((debug) & LWIP_DBG_HALT) { \ + while(1); \ + } \ + } \ + } while(0) + +#else /* LWIP_DEBUG */ +#define LWIP_DEBUGF(debug, message) +#endif /* LWIP_DEBUG */ + +#endif /* LWIP_HDR_DEBUG_H */ diff --git a/Other/tun2socks/core/c/include/lwip/def.h b/Other/tun2socks/core/c/include/lwip/def.h new file mode 100644 index 0000000..dfb266d --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/def.h @@ -0,0 +1,152 @@ +/** + * @file + * various utility macros + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +/** + * @defgroup perf Performance measurement + * @ingroup sys_layer + * All defines related to this section must not be placed in lwipopts.h, + * but in arch/perf.h! + * Measurement calls made throughout lwip, these can be defined to nothing. + * - PERF_START: start measuring something. + * - PERF_STOP(x): stop measuring something, and record the result. + */ + +#ifndef LWIP_HDR_DEF_H +#define LWIP_HDR_DEF_H + +/* arch.h might define NULL already */ +#include "lwip/arch.h" +#include "lwip/opt.h" +#if LWIP_PERF +#include "arch/perf.h" +#else /* LWIP_PERF */ +#define PERF_START /* null definition */ +#define PERF_STOP(x) /* null definition */ +#endif /* LWIP_PERF */ + +#ifdef __cplusplus +extern "C" { +#endif + +#define LWIP_MAX(x , y) (((x) > (y)) ? (x) : (y)) +#define LWIP_MIN(x , y) (((x) < (y)) ? (x) : (y)) + +/* Get the number of entries in an array ('x' must NOT be a pointer!) */ +#define LWIP_ARRAYSIZE(x) (sizeof(x)/sizeof((x)[0])) + +/** Create u32_t value from bytes */ +#define LWIP_MAKEU32(a,b,c,d) (((u32_t)((a) & 0xff) << 24) | \ + ((u32_t)((b) & 0xff) << 16) | \ + ((u32_t)((c) & 0xff) << 8) | \ + (u32_t)((d) & 0xff)) + +#ifndef NULL +#ifdef __cplusplus +#define NULL 0 +#else +#define NULL ((void *)0) +#endif +#endif + +#if BYTE_ORDER == BIG_ENDIAN +#define lwip_htons(x) ((u16_t)(x)) +#define lwip_ntohs(x) ((u16_t)(x)) +#define lwip_htonl(x) ((u32_t)(x)) +#define lwip_ntohl(x) ((u32_t)(x)) +#define PP_HTONS(x) ((u16_t)(x)) +#define PP_NTOHS(x) ((u16_t)(x)) +#define PP_HTONL(x) ((u32_t)(x)) +#define PP_NTOHL(x) ((u32_t)(x)) +#else /* BYTE_ORDER != BIG_ENDIAN */ +#ifndef lwip_htons +u16_t lwip_htons(u16_t x); +#endif +#define lwip_ntohs(x) lwip_htons(x) + +#ifndef lwip_htonl +u32_t lwip_htonl(u32_t x); +#endif +#define lwip_ntohl(x) lwip_htonl(x) + +/* These macros should be calculated by the preprocessor and are used + with compile-time constants only (so that there is no little-endian + overhead at runtime). */ +#define PP_HTONS(x) ((u16_t)((((x) & (u16_t)0x00ffU) << 8) | (((x) & (u16_t)0xff00U) >> 8))) +#define PP_NTOHS(x) PP_HTONS(x) +#define PP_HTONL(x) ((((x) & (u32_t)0x000000ffUL) << 24) | \ + (((x) & (u32_t)0x0000ff00UL) << 8) | \ + (((x) & (u32_t)0x00ff0000UL) >> 8) | \ + (((x) & (u32_t)0xff000000UL) >> 24)) +#define PP_NTOHL(x) PP_HTONL(x) +#endif /* BYTE_ORDER == BIG_ENDIAN */ + +/* Provide usual function names as macros for users, but this can be turned off */ +#ifndef LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS +#define htons(x) lwip_htons(x) +#define ntohs(x) lwip_ntohs(x) +#define htonl(x) lwip_htonl(x) +#define ntohl(x) lwip_ntohl(x) +#endif + +/* Functions that are not available as standard implementations. + * In cc.h, you can #define these to implementations available on + * your platform to save some code bytes if you use these functions + * in your application, too. + */ + +#ifndef lwip_itoa +/* This can be #defined to itoa() or snprintf(result, bufsize, "%d", number) depending on your platform */ +void lwip_itoa(char* result, size_t bufsize, int number); +#endif +#ifndef lwip_strnicmp +/* This can be #defined to strnicmp() or strncasecmp() depending on your platform */ +int lwip_strnicmp(const char* str1, const char* str2, size_t len); +#endif +#ifndef lwip_stricmp +/* This can be #defined to stricmp() or strcasecmp() depending on your platform */ +int lwip_stricmp(const char* str1, const char* str2); +#endif +#ifndef lwip_strnstr +/* This can be #defined to strnstr() depending on your platform */ +char* lwip_strnstr(const char* buffer, const char* token, size_t n); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_DEF_H */ diff --git a/Other/tun2socks/core/c/include/lwip/dhcp.h b/Other/tun2socks/core/c/include/lwip/dhcp.h new file mode 100644 index 0000000..c78aa0b --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/dhcp.h @@ -0,0 +1,139 @@ +/** + * @file + * DHCP client API + */ + +/* + * Copyright (c) 2001-2004 Leon Woestenberg + * Copyright (c) 2001-2004 Axon Digital Design B.V., The Netherlands. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Leon Woestenberg + * + */ +#ifndef LWIP_HDR_DHCP_H +#define LWIP_HDR_DHCP_H + +#include "lwip/opt.h" + +#if LWIP_DHCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/netif.h" +#include "lwip/udp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** period (in seconds) of the application calling dhcp_coarse_tmr() */ +#define DHCP_COARSE_TIMER_SECS 60 +/** period (in milliseconds) of the application calling dhcp_coarse_tmr() */ +#define DHCP_COARSE_TIMER_MSECS (DHCP_COARSE_TIMER_SECS * 1000UL) +/** period (in milliseconds) of the application calling dhcp_fine_tmr() */ +#define DHCP_FINE_TIMER_MSECS 500 + +#define DHCP_BOOT_FILE_LEN 128U + +/* AutoIP cooperation flags (struct dhcp.autoip_coop_state) */ +typedef enum { + DHCP_AUTOIP_COOP_STATE_OFF = 0, + DHCP_AUTOIP_COOP_STATE_ON = 1 +} dhcp_autoip_coop_state_enum_t; + +struct dhcp +{ + /** transaction identifier of last sent request */ + u32_t xid; + /** track PCB allocation state */ + u8_t pcb_allocated; + /** current DHCP state machine state */ + u8_t state; + /** retries of current request */ + u8_t tries; +#if LWIP_DHCP_AUTOIP_COOP + u8_t autoip_coop_state; +#endif + u8_t subnet_mask_given; + + u16_t request_timeout; /* #ticks with period DHCP_FINE_TIMER_SECS for request timeout */ + u16_t t1_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for renewal time */ + u16_t t2_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for rebind time */ + u16_t t1_renew_time; /* #ticks with period DHCP_COARSE_TIMER_SECS until next renew try */ + u16_t t2_rebind_time; /* #ticks with period DHCP_COARSE_TIMER_SECS until next rebind try */ + u16_t lease_used; /* #ticks with period DHCP_COARSE_TIMER_SECS since last received DHCP ack */ + u16_t t0_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for lease time */ + ip_addr_t server_ip_addr; /* dhcp server address that offered this lease (ip_addr_t because passed to UDP) */ + ip4_addr_t offered_ip_addr; + ip4_addr_t offered_sn_mask; + ip4_addr_t offered_gw_addr; + + u32_t offered_t0_lease; /* lease period (in seconds) */ + u32_t offered_t1_renew; /* recommended renew time (usually 50% of lease period) */ + u32_t offered_t2_rebind; /* recommended rebind time (usually 87.5 of lease period) */ +#if LWIP_DHCP_BOOTP_FILE + ip4_addr_t offered_si_addr; + char boot_file_name[DHCP_BOOT_FILE_LEN]; +#endif /* LWIP_DHCP_BOOTPFILE */ +}; + + +void dhcp_set_struct(struct netif *netif, struct dhcp *dhcp); +/** Remove a struct dhcp previously set to the netif using dhcp_set_struct() */ +#define dhcp_remove_struct(netif) netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, NULL) +void dhcp_cleanup(struct netif *netif); +err_t dhcp_start(struct netif *netif); +err_t dhcp_renew(struct netif *netif); +err_t dhcp_release(struct netif *netif); +void dhcp_stop(struct netif *netif); +void dhcp_release_and_stop(struct netif *netif); +void dhcp_inform(struct netif *netif); +void dhcp_network_changed(struct netif *netif); +#if DHCP_DOES_ARP_CHECK +void dhcp_arp_reply(struct netif *netif, const ip4_addr_t *addr); +#endif +u8_t dhcp_supplied_address(const struct netif *netif); +/* to be called every minute */ +void dhcp_coarse_tmr(void); +/* to be called every half second */ +void dhcp_fine_tmr(void); + +#if LWIP_DHCP_GET_NTP_SRV +/** This function must exist, in other to add offered NTP servers to + * the NTP (or SNTP) engine. + * See LWIP_DHCP_MAX_NTP_SERVERS */ +extern void dhcp_set_ntp_servers(u8_t num_ntp_servers, const ip4_addr_t* ntp_server_addrs); +#endif /* LWIP_DHCP_GET_NTP_SRV */ + +#define netif_dhcp_data(netif) ((struct dhcp*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP)) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_DHCP */ + +#endif /*LWIP_HDR_DHCP_H*/ diff --git a/Other/tun2socks/core/c/include/lwip/dhcp6.h b/Other/tun2socks/core/c/include/lwip/dhcp6.h new file mode 100644 index 0000000..5cc4a01 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/dhcp6.h @@ -0,0 +1,104 @@ +/** + * @file + * + * DHCPv6 client: IPv6 address autoconfiguration as per + * RFC 3315 (stateful DHCPv6) and + * RFC 3736 (stateless DHCPv6). + */ + +/* + * Copyright (c) 2018 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + */ + +#ifndef LWIP_HDR_IP6_DHCP6_H +#define LWIP_HDR_IP6_DHCP6_H + +#include "lwip/opt.h" + +#if LWIP_IPV6_DHCP6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/err.h" +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** period (in milliseconds) of the application calling dhcp6_tmr() */ +#define DHCP6_TIMER_MSECS 500 + +struct dhcp6 +{ + /** transaction identifier of last sent request */ + u32_t xid; + /** track PCB allocation state */ + u8_t pcb_allocated; + /** current DHCPv6 state machine state */ + u8_t state; + /** retries of current request */ + u8_t tries; + /** if request config is triggered while another action is active, this keeps track of it */ + u8_t request_config_pending; + /** #ticks with period DHCP6_TIMER_MSECS for request timeout */ + u16_t request_timeout; +#if LWIP_IPV6_DHCP6_STATEFUL + /* @todo: add more members here to keep track of stateful DHCPv6 data, like lease times */ +#endif /* LWIP_IPV6_DHCP6_STATEFUL */ +}; + +void dhcp6_set_struct(struct netif *netif, struct dhcp6 *dhcp6); +/** Remove a struct dhcp6 previously set to the netif using dhcp6_set_struct() */ +#define dhcp6_remove_struct(netif) netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, NULL) +void dhcp6_cleanup(struct netif *netif); + +err_t dhcp6_enable_stateful(struct netif *netif); +err_t dhcp6_enable_stateless(struct netif *netif); +void dhcp6_disable(struct netif *netif); + +void dhcp6_tmr(void); + +void dhcp6_nd6_ra_trigger(struct netif *netif, u8_t managed_addr_config, u8_t other_config); + +#if LWIP_DHCP6_GET_NTP_SRV +/** This function must exist, in other to add offered NTP servers to + * the NTP (or SNTP) engine. + * See LWIP_DHCP6_MAX_NTP_SERVERS */ +extern void dhcp6_set_ntp_servers(u8_t num_ntp_servers, const ip_addr_t* ntp_server_addrs); +#endif /* LWIP_DHCP6_GET_NTP_SRV */ + +#define netif_dhcp6_data(netif) ((struct dhcp6*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6)) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6_DHCP6 */ + +#endif /* LWIP_HDR_IP6_DHCP6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/dns.h b/Other/tun2socks/core/c/include/lwip/dns.h new file mode 100644 index 0000000..0913415 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/dns.h @@ -0,0 +1,131 @@ +/** + * @file + * DNS API + */ + +/** + * lwip DNS resolver header file. + + * Author: Jim Pettinato + * April 2007 + + * ported from uIP resolv.c Copyright (c) 2002-2003, Adam Dunkels. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef LWIP_HDR_DNS_H +#define LWIP_HDR_DNS_H + +#include "lwip/opt.h" + +#if LWIP_DNS + +#include "lwip/ip_addr.h" +#include "lwip/err.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** DNS timer period */ +#define DNS_TMR_INTERVAL 1000 + +/* DNS resolve types: */ +#define LWIP_DNS_ADDRTYPE_IPV4 0 +#define LWIP_DNS_ADDRTYPE_IPV6 1 +#define LWIP_DNS_ADDRTYPE_IPV4_IPV6 2 /* try to resolve IPv4 first, try IPv6 if IPv4 fails only */ +#define LWIP_DNS_ADDRTYPE_IPV6_IPV4 3 /* try to resolve IPv6 first, try IPv4 if IPv6 fails only */ +#if LWIP_IPV4 && LWIP_IPV6 +#ifndef LWIP_DNS_ADDRTYPE_DEFAULT +#define LWIP_DNS_ADDRTYPE_DEFAULT LWIP_DNS_ADDRTYPE_IPV4_IPV6 +#endif +#elif LWIP_IPV4 +#define LWIP_DNS_ADDRTYPE_DEFAULT LWIP_DNS_ADDRTYPE_IPV4 +#else +#define LWIP_DNS_ADDRTYPE_DEFAULT LWIP_DNS_ADDRTYPE_IPV6 +#endif + +#if DNS_LOCAL_HOSTLIST +/** struct used for local host-list */ +struct local_hostlist_entry { + /** static hostname */ + const char *name; + /** static host address in network byteorder */ + ip_addr_t addr; + struct local_hostlist_entry *next; +}; +#define DNS_LOCAL_HOSTLIST_ELEM(name, addr_init) {name, addr_init, NULL} +#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC +#ifndef DNS_LOCAL_HOSTLIST_MAX_NAMELEN +#define DNS_LOCAL_HOSTLIST_MAX_NAMELEN DNS_MAX_NAME_LENGTH +#endif +#define LOCALHOSTLIST_ELEM_SIZE ((sizeof(struct local_hostlist_entry) + DNS_LOCAL_HOSTLIST_MAX_NAMELEN + 1)) +#endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ +#endif /* DNS_LOCAL_HOSTLIST */ + +#if LWIP_IPV4 +extern const ip_addr_t dns_mquery_v4group; +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 +extern const ip_addr_t dns_mquery_v6group; +#endif /* LWIP_IPV6 */ + +/** Callback which is invoked when a hostname is found. + * A function of this type must be implemented by the application using the DNS resolver. + * @param name pointer to the name that was looked up. + * @param ipaddr pointer to an ip_addr_t containing the IP address of the hostname, + * or NULL if the name could not be found (or on any other error). + * @param callback_arg a user-specified callback argument passed to dns_gethostbyname +*/ +typedef void (*dns_found_callback)(const char *name, const ip_addr_t *ipaddr, void *callback_arg); + +void dns_init(void); +void dns_tmr(void); +void dns_setserver(u8_t numdns, const ip_addr_t *dnsserver); +const ip_addr_t* dns_getserver(u8_t numdns); +err_t dns_gethostbyname(const char *hostname, ip_addr_t *addr, + dns_found_callback found, void *callback_arg); +err_t dns_gethostbyname_addrtype(const char *hostname, ip_addr_t *addr, + dns_found_callback found, void *callback_arg, + u8_t dns_addrtype); + + +#if DNS_LOCAL_HOSTLIST +size_t dns_local_iterate(dns_found_callback iterator_fn, void *iterator_arg); +err_t dns_local_lookup(const char *hostname, ip_addr_t *addr, u8_t dns_addrtype); +#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC +int dns_local_removehost(const char *hostname, const ip_addr_t *addr); +err_t dns_local_addhost(const char *hostname, const ip_addr_t *addr); +#endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ +#endif /* DNS_LOCAL_HOSTLIST */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_DNS */ + +#endif /* LWIP_HDR_DNS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/err.h b/Other/tun2socks/core/c/include/lwip/err.h new file mode 100644 index 0000000..887d9b3 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/err.h @@ -0,0 +1,117 @@ +/** + * @file + * lwIP Error codes + */ +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_ERR_H +#define LWIP_HDR_ERR_H + +#include "lwip/opt.h" +#include "lwip/arch.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @defgroup infrastructure_errors Error codes + * @ingroup infrastructure + * @{ + */ + +/** Definitions for error constants. */ +typedef enum { +/** No error, everything OK. */ + ERR_OK = 0, +/** Out of memory error. */ + ERR_MEM = -1, +/** Buffer error. */ + ERR_BUF = -2, +/** Timeout. */ + ERR_TIMEOUT = -3, +/** Routing problem. */ + ERR_RTE = -4, +/** Operation in progress */ + ERR_INPROGRESS = -5, +/** Illegal value. */ + ERR_VAL = -6, +/** Operation would block. */ + ERR_WOULDBLOCK = -7, +/** Address in use. */ + ERR_USE = -8, +/** Already connecting. */ + ERR_ALREADY = -9, +/** Conn already established.*/ + ERR_ISCONN = -10, +/** Not connected. */ + ERR_CONN = -11, +/** Low-level netif error */ + ERR_IF = -12, + +/** Connection aborted. */ + ERR_ABRT = -13, +/** Connection reset. */ + ERR_RST = -14, +/** Connection closed. */ + ERR_CLSD = -15, +/** Illegal argument. */ + ERR_ARG = -16 +} err_enum_t; + +/** Define LWIP_ERR_T in cc.h if you want to use + * a different type for your platform (must be signed). */ +#ifdef LWIP_ERR_T +typedef LWIP_ERR_T err_t; +#else /* LWIP_ERR_T */ +typedef s8_t err_t; +#endif /* LWIP_ERR_T*/ + +/** + * @} + */ + +#ifdef LWIP_DEBUG +extern const char *lwip_strerr(err_t err); +#else +#define lwip_strerr(x) "" +#endif /* LWIP_DEBUG */ + +#if !NO_SYS +int err_to_errno(err_t err); +#endif /* !NO_SYS */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_ERR_H */ diff --git a/Other/tun2socks/core/c/include/lwip/errno.h b/Other/tun2socks/core/c/include/lwip/errno.h new file mode 100644 index 0000000..48d6b53 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/errno.h @@ -0,0 +1,198 @@ +/** + * @file + * Posix Errno defines + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_ERRNO_H +#define LWIP_HDR_ERRNO_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef LWIP_PROVIDE_ERRNO + +#define EPERM 1 /* Operation not permitted */ +#define ENOENT 2 /* No such file or directory */ +#define ESRCH 3 /* No such process */ +#define EINTR 4 /* Interrupted system call */ +#define EIO 5 /* I/O error */ +#define ENXIO 6 /* No such device or address */ +#define E2BIG 7 /* Arg list too long */ +#define ENOEXEC 8 /* Exec format error */ +#define EBADF 9 /* Bad file number */ +#define ECHILD 10 /* No child processes */ +#define EAGAIN 11 /* Try again */ +#define ENOMEM 12 /* Out of memory */ +#define EACCES 13 /* Permission denied */ +#define EFAULT 14 /* Bad address */ +#define ENOTBLK 15 /* Block device required */ +#define EBUSY 16 /* Device or resource busy */ +#define EEXIST 17 /* File exists */ +#define EXDEV 18 /* Cross-device link */ +#define ENODEV 19 /* No such device */ +#define ENOTDIR 20 /* Not a directory */ +#define EISDIR 21 /* Is a directory */ +#define EINVAL 22 /* Invalid argument */ +#define ENFILE 23 /* File table overflow */ +#define EMFILE 24 /* Too many open files */ +#define ENOTTY 25 /* Not a typewriter */ +#define ETXTBSY 26 /* Text file busy */ +#define EFBIG 27 /* File too large */ +#define ENOSPC 28 /* No space left on device */ +#define ESPIPE 29 /* Illegal seek */ +#define EROFS 30 /* Read-only file system */ +#define EMLINK 31 /* Too many links */ +#define EPIPE 32 /* Broken pipe */ +#define EDOM 33 /* Math argument out of domain of func */ +#define ERANGE 34 /* Math result not representable */ +#define EDEADLK 35 /* Resource deadlock would occur */ +#define ENAMETOOLONG 36 /* File name too long */ +#define ENOLCK 37 /* No record locks available */ +#define ENOSYS 38 /* Function not implemented */ +#define ENOTEMPTY 39 /* Directory not empty */ +#define ELOOP 40 /* Too many symbolic links encountered */ +#define EWOULDBLOCK EAGAIN /* Operation would block */ +#define ENOMSG 42 /* No message of desired type */ +#define EIDRM 43 /* Identifier removed */ +#define ECHRNG 44 /* Channel number out of range */ +#define EL2NSYNC 45 /* Level 2 not synchronized */ +#define EL3HLT 46 /* Level 3 halted */ +#define EL3RST 47 /* Level 3 reset */ +#define ELNRNG 48 /* Link number out of range */ +#define EUNATCH 49 /* Protocol driver not attached */ +#define ENOCSI 50 /* No CSI structure available */ +#define EL2HLT 51 /* Level 2 halted */ +#define EBADE 52 /* Invalid exchange */ +#define EBADR 53 /* Invalid request descriptor */ +#define EXFULL 54 /* Exchange full */ +#define ENOANO 55 /* No anode */ +#define EBADRQC 56 /* Invalid request code */ +#define EBADSLT 57 /* Invalid slot */ + +#define EDEADLOCK EDEADLK + +#define EBFONT 59 /* Bad font file format */ +#define ENOSTR 60 /* Device not a stream */ +#define ENODATA 61 /* No data available */ +#define ETIME 62 /* Timer expired */ +#define ENOSR 63 /* Out of streams resources */ +#define ENONET 64 /* Machine is not on the network */ +#define ENOPKG 65 /* Package not installed */ +#define EREMOTE 66 /* Object is remote */ +#define ENOLINK 67 /* Link has been severed */ +#define EADV 68 /* Advertise error */ +#define ESRMNT 69 /* Srmount error */ +#define ECOMM 70 /* Communication error on send */ +#define EPROTO 71 /* Protocol error */ +#define EMULTIHOP 72 /* Multihop attempted */ +#define EDOTDOT 73 /* RFS specific error */ +#define EBADMSG 74 /* Not a data message */ +#define EOVERFLOW 75 /* Value too large for defined data type */ +#define ENOTUNIQ 76 /* Name not unique on network */ +#define EBADFD 77 /* File descriptor in bad state */ +#define EREMCHG 78 /* Remote address changed */ +#define ELIBACC 79 /* Can not access a needed shared library */ +#define ELIBBAD 80 /* Accessing a corrupted shared library */ +#define ELIBSCN 81 /* .lib section in a.out corrupted */ +#define ELIBMAX 82 /* Attempting to link in too many shared libraries */ +#define ELIBEXEC 83 /* Cannot exec a shared library directly */ +#define EILSEQ 84 /* Illegal byte sequence */ +#define ERESTART 85 /* Interrupted system call should be restarted */ +#define ESTRPIPE 86 /* Streams pipe error */ +#define EUSERS 87 /* Too many users */ +#define ENOTSOCK 88 /* Socket operation on non-socket */ +#define EDESTADDRREQ 89 /* Destination address required */ +#define EMSGSIZE 90 /* Message too long */ +#define EPROTOTYPE 91 /* Protocol wrong type for socket */ +#define ENOPROTOOPT 92 /* Protocol not available */ +#define EPROTONOSUPPORT 93 /* Protocol not supported */ +#define ESOCKTNOSUPPORT 94 /* Socket type not supported */ +#define EOPNOTSUPP 95 /* Operation not supported on transport endpoint */ +#define EPFNOSUPPORT 96 /* Protocol family not supported */ +#define EAFNOSUPPORT 97 /* Address family not supported by protocol */ +#define EADDRINUSE 98 /* Address already in use */ +#define EADDRNOTAVAIL 99 /* Cannot assign requested address */ +#define ENETDOWN 100 /* Network is down */ +#define ENETUNREACH 101 /* Network is unreachable */ +#define ENETRESET 102 /* Network dropped connection because of reset */ +#define ECONNABORTED 103 /* Software caused connection abort */ +#define ECONNRESET 104 /* Connection reset by peer */ +#define ENOBUFS 105 /* No buffer space available */ +#define EISCONN 106 /* Transport endpoint is already connected */ +#define ENOTCONN 107 /* Transport endpoint is not connected */ +#define ESHUTDOWN 108 /* Cannot send after transport endpoint shutdown */ +#define ETOOMANYREFS 109 /* Too many references: cannot splice */ +#define ETIMEDOUT 110 /* Connection timed out */ +#define ECONNREFUSED 111 /* Connection refused */ +#define EHOSTDOWN 112 /* Host is down */ +#define EHOSTUNREACH 113 /* No route to host */ +#define EALREADY 114 /* Operation already in progress */ +#define EINPROGRESS 115 /* Operation now in progress */ +#define ESTALE 116 /* Stale NFS file handle */ +#define EUCLEAN 117 /* Structure needs cleaning */ +#define ENOTNAM 118 /* Not a XENIX named type file */ +#define ENAVAIL 119 /* No XENIX semaphores available */ +#define EISNAM 120 /* Is a named type file */ +#define EREMOTEIO 121 /* Remote I/O error */ +#define EDQUOT 122 /* Quota exceeded */ + +#define ENOMEDIUM 123 /* No medium found */ +#define EMEDIUMTYPE 124 /* Wrong medium type */ + +#ifndef errno +extern int errno; +#endif + +#else /* LWIP_PROVIDE_ERRNO */ + +/* Define LWIP_ERRNO_STDINCLUDE if you want to include here */ +#ifdef LWIP_ERRNO_STDINCLUDE +#include +#else /* LWIP_ERRNO_STDINCLUDE */ +/* Define LWIP_ERRNO_INCLUDE to an equivalent of to include the error defines here */ +#ifdef LWIP_ERRNO_INCLUDE +#include LWIP_ERRNO_INCLUDE +#endif /* LWIP_ERRNO_INCLUDE */ +#endif /* LWIP_ERRNO_STDINCLUDE */ + +#endif /* LWIP_PROVIDE_ERRNO */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_ERRNO_H */ diff --git a/Other/tun2socks/core/c/include/lwip/etharp.h b/Other/tun2socks/core/c/include/lwip/etharp.h new file mode 100644 index 0000000..2036b24 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/etharp.h @@ -0,0 +1,105 @@ +/** + * @file + * Ethernet output function - handles OUTGOING ethernet level traffic, implements + * ARP resolving. + * To be used in most low-level netif implementations + */ + +/* + * Copyright (c) 2001-2003 Swedish Institute of Computer Science. + * Copyright (c) 2003-2004 Leon Woestenberg + * Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#ifndef LWIP_HDR_NETIF_ETHARP_H +#define LWIP_HDR_NETIF_ETHARP_H + +#include "lwip/opt.h" + +#if LWIP_ARP || LWIP_ETHERNET /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/pbuf.h" +#include "lwip/ip4_addr.h" +#include "lwip/netif.h" +#include "lwip/ip4.h" +#include "lwip/prot/ethernet.h" + +#if LWIP_IPV4 && LWIP_ARP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/prot/etharp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** 1 seconds period */ +#define ARP_TMR_INTERVAL 1000 + +#if ARP_QUEUEING +/** struct for queueing outgoing packets for unknown address + * defined here to be accessed by memp.h + */ +struct etharp_q_entry { + struct etharp_q_entry *next; + struct pbuf *p; +}; +#endif /* ARP_QUEUEING */ + +#define etharp_init() /* Compatibility define, no init needed. */ +void etharp_tmr(void); +ssize_t etharp_find_addr(struct netif *netif, const ip4_addr_t *ipaddr, + struct eth_addr **eth_ret, const ip4_addr_t **ip_ret); +int etharp_get_entry(size_t i, ip4_addr_t **ipaddr, struct netif **netif, struct eth_addr **eth_ret); +err_t etharp_output(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr); +err_t etharp_query(struct netif *netif, const ip4_addr_t *ipaddr, struct pbuf *q); +err_t etharp_request(struct netif *netif, const ip4_addr_t *ipaddr); +/** For Ethernet network interfaces, we might want to send "gratuitous ARP"; + * this is an ARP packet sent by a node in order to spontaneously cause other + * nodes to update an entry in their ARP cache. + * From RFC 3220 "IP Mobility Support for IPv4" section 4.6. */ +#define etharp_gratuitous(netif) etharp_request((netif), netif_ip4_addr(netif)) +void etharp_cleanup_netif(struct netif *netif); + +#if ETHARP_SUPPORT_STATIC_ENTRIES +err_t etharp_add_static_entry(const ip4_addr_t *ipaddr, struct eth_addr *ethaddr); +err_t etharp_remove_static_entry(const ip4_addr_t *ipaddr); +#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */ + +void etharp_input(struct pbuf *p, struct netif *netif); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV4 && LWIP_ARP */ +#endif /* LWIP_ARP || LWIP_ETHERNET */ + +#endif /* LWIP_HDR_NETIF_ETHARP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/ethip6.h b/Other/tun2socks/core/c/include/lwip/ethip6.h new file mode 100644 index 0000000..5e88dff --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ethip6.h @@ -0,0 +1,68 @@ +/** + * @file + * + * Ethernet output for IPv6. Uses ND tables for link-layer addressing. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#ifndef LWIP_HDR_ETHIP6_H +#define LWIP_HDR_ETHIP6_H + +#include "lwip/opt.h" + +#if LWIP_IPV6 && LWIP_ETHERNET /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/pbuf.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/netif.h" + + +#ifdef __cplusplus +extern "C" { +#endif + + +err_t ethip6_output(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6 && LWIP_ETHERNET */ + +#endif /* LWIP_HDR_ETHIP6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/icmp.h b/Other/tun2socks/core/c/include/lwip/icmp.h new file mode 100644 index 0000000..f5a31fd --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/icmp.h @@ -0,0 +1,110 @@ +/** + * @file + * ICMP API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_ICMP_H +#define LWIP_HDR_ICMP_H + +#include "lwip/opt.h" +#include "lwip/pbuf.h" +#include "lwip/ip_addr.h" +#include "lwip/netif.h" +#include "lwip/prot/icmp.h" + +#if LWIP_IPV6 && LWIP_ICMP6 +#include "lwip/icmp6.h" +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/** ICMP destination unreachable codes */ +enum icmp_dur_type { + /** net unreachable */ + ICMP_DUR_NET = 0, + /** host unreachable */ + ICMP_DUR_HOST = 1, + /** protocol unreachable */ + ICMP_DUR_PROTO = 2, + /** port unreachable */ + ICMP_DUR_PORT = 3, + /** fragmentation needed and DF set */ + ICMP_DUR_FRAG = 4, + /** source route failed */ + ICMP_DUR_SR = 5 +}; + +/** ICMP time exceeded codes */ +enum icmp_te_type { + /** time to live exceeded in transit */ + ICMP_TE_TTL = 0, + /** fragment reassembly time exceeded */ + ICMP_TE_FRAG = 1 +}; + +#if LWIP_IPV4 && LWIP_ICMP /* don't build if not configured for use in lwipopts.h */ + +void icmp_input(struct pbuf *p, struct netif *inp); +void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t); +void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t); + +#endif /* LWIP_IPV4 && LWIP_ICMP */ + +#if LWIP_IPV4 && LWIP_IPV6 +#if LWIP_ICMP && LWIP_ICMP6 +#define icmp_port_unreach(isipv6, pbuf) ((isipv6) ? \ + icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT) : \ + icmp_dest_unreach(pbuf, ICMP_DUR_PORT)) +#elif LWIP_ICMP +#define icmp_port_unreach(isipv6, pbuf) do{ if(!(isipv6)) { icmp_dest_unreach(pbuf, ICMP_DUR_PORT);}}while(0) +#elif LWIP_ICMP6 +#define icmp_port_unreach(isipv6, pbuf) do{ if(isipv6) { icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT);}}while(0) +#else +#define icmp_port_unreach(isipv6, pbuf) +#endif +#elif LWIP_IPV6 && LWIP_ICMP6 +#define icmp_port_unreach(isipv6, pbuf) icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT) +#elif LWIP_IPV4 && LWIP_ICMP +#define icmp_port_unreach(isipv6, pbuf) icmp_dest_unreach(pbuf, ICMP_DUR_PORT) +#else /* (LWIP_IPV6 && LWIP_ICMP6) || (LWIP_IPV4 && LWIP_ICMP) */ +#define icmp_port_unreach(isipv6, pbuf) +#endif /* (LWIP_IPV6 && LWIP_ICMP6) || (LWIP_IPV4 && LWIP_ICMP) LWIP_IPV4*/ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_ICMP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/icmp6.h b/Other/tun2socks/core/c/include/lwip/icmp6.h new file mode 100644 index 0000000..0ccb789 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/icmp6.h @@ -0,0 +1,72 @@ +/** + * @file + * + * IPv6 version of ICMP, as per RFC 4443. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ +#ifndef LWIP_HDR_ICMP6_H +#define LWIP_HDR_ICMP6_H + +#include "lwip/opt.h" +#include "lwip/pbuf.h" +#include "lwip/ip6_addr.h" +#include "lwip/netif.h" +#include "lwip/prot/icmp6.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_ICMP6 && LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +void icmp6_input(struct pbuf *p, struct netif *inp); +void icmp6_dest_unreach(struct pbuf *p, enum icmp6_dur_code c); +void icmp6_packet_too_big(struct pbuf *p, u32_t mtu); +void icmp6_time_exceeded(struct pbuf *p, enum icmp6_te_code c); +void icmp6_time_exceeded_with_addrs(struct pbuf *p, enum icmp6_te_code c, + const ip6_addr_t *src_addr, const ip6_addr_t *dest_addr); +void icmp6_param_problem(struct pbuf *p, enum icmp6_pp_code c, const void *pointer); + +#endif /* LWIP_ICMP6 && LWIP_IPV6 */ + + +#ifdef __cplusplus +} +#endif + + +#endif /* LWIP_HDR_ICMP6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/if_api.h b/Other/tun2socks/core/c/include/lwip/if_api.h new file mode 100644 index 0000000..39017ab --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/if_api.h @@ -0,0 +1,68 @@ +/** + * @file + * Interface Identification APIs from: + * RFC 3493: Basic Socket Interface Extensions for IPv6 + * Section 4: Interface Identification + */ + +/* + * Copyright (c) 2017 Joel Cunningham, Garmin International, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Joel Cunningham + * + */ +#ifndef LWIP_HDR_IF_H +#define LWIP_HDR_IF_H + +#include "lwip/opt.h" + +#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define IF_NAMESIZE NETIF_NAMESIZE + +char * lwip_if_indextoname(unsigned int ifindex, char *ifname); +unsigned int lwip_if_nametoindex(const char *ifname); + +#if LWIP_COMPAT_SOCKETS +#define if_indextoname(ifindex, ifname) lwip_if_indextoname(ifindex,ifname) +#define if_nametoindex(ifname) lwip_if_nametoindex(ifname) +#endif /* LWIP_COMPAT_SOCKETS */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_SOCKET */ + +#endif /* LWIP_HDR_IF_H */ diff --git a/Other/tun2socks/core/c/include/lwip/igmp.h b/Other/tun2socks/core/c/include/lwip/igmp.h new file mode 100644 index 0000000..ffd80e6 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/igmp.h @@ -0,0 +1,115 @@ +/** + * @file + * IGMP API + */ + +/* + * Copyright (c) 2002 CITEL Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of CITEL Technologies Ltd nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY CITEL TECHNOLOGIES AND CONTRIBUTORS ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL CITEL TECHNOLOGIES OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is a contribution to the lwIP TCP/IP stack. + * The Swedish Institute of Computer Science and Adam Dunkels + * are specifically granted permission to redistribute this + * source code. +*/ + +#ifndef LWIP_HDR_IGMP_H +#define LWIP_HDR_IGMP_H + +#include "lwip/opt.h" +#include "lwip/ip_addr.h" +#include "lwip/netif.h" +#include "lwip/pbuf.h" + +#if LWIP_IPV4 && LWIP_IGMP /* don't build if not configured for use in lwipopts.h */ + +#ifdef __cplusplus +extern "C" { +#endif + +/* IGMP timer */ +#define IGMP_TMR_INTERVAL 100 /* Milliseconds */ +#define IGMP_V1_DELAYING_MEMBER_TMR (1000/IGMP_TMR_INTERVAL) +#define IGMP_JOIN_DELAYING_MEMBER_TMR (500 /IGMP_TMR_INTERVAL) + +/* Compatibility defines (don't use for new code) */ +#define IGMP_DEL_MAC_FILTER NETIF_DEL_MAC_FILTER +#define IGMP_ADD_MAC_FILTER NETIF_ADD_MAC_FILTER + +/** + * igmp group structure - there is + * a list of groups for each interface + * these should really be linked from the interface, but + * if we keep them separate we will not affect the lwip original code + * too much + * + * There will be a group for the all systems group address but this + * will not run the state machine as it is used to kick off reports + * from all the other groups + */ +struct igmp_group { + /** next link */ + struct igmp_group *next; + /** multicast address */ + ip4_addr_t group_address; + /** signifies we were the last person to report */ + u8_t last_reporter_flag; + /** current state of the group */ + u8_t group_state; + /** timer for reporting, negative is OFF */ + u16_t timer; + /** counter of simultaneous uses */ + u8_t use; +}; + +/* Prototypes */ +void igmp_init(void); +err_t igmp_start(struct netif *netif); +err_t igmp_stop(struct netif *netif); +void igmp_report_groups(struct netif *netif); +struct igmp_group *igmp_lookfor_group(struct netif *ifp, const ip4_addr_t *addr); +void igmp_input(struct pbuf *p, struct netif *inp, const ip4_addr_t *dest); +err_t igmp_joingroup(const ip4_addr_t *ifaddr, const ip4_addr_t *groupaddr); +err_t igmp_joingroup_netif(struct netif *netif, const ip4_addr_t *groupaddr); +err_t igmp_leavegroup(const ip4_addr_t *ifaddr, const ip4_addr_t *groupaddr); +err_t igmp_leavegroup_netif(struct netif *netif, const ip4_addr_t *groupaddr); +void igmp_tmr(void); + +/** @ingroup igmp + * Get list head of IGMP groups for netif. + * Note: The allsystems group IP is contained in the list as first entry. + * @see @ref netif_set_igmp_mac_filter() + */ +#define netif_igmp_data(netif) ((struct igmp_group *)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_IGMP)) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV4 && LWIP_IGMP */ + +#endif /* LWIP_HDR_IGMP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/inet.h b/Other/tun2socks/core/c/include/lwip/inet.h new file mode 100644 index 0000000..2982a0f --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/inet.h @@ -0,0 +1,169 @@ +/** + * @file + * This file (together with sockets.h) aims to provide structs and functions from + * - arpa/inet.h + * - netinet/in.h + * + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_INET_H +#define LWIP_HDR_INET_H + +#include "lwip/opt.h" +#include "lwip/def.h" +#include "lwip/ip_addr.h" +#include "lwip/ip6_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* If your port already typedef's in_addr_t, define IN_ADDR_T_DEFINED + to prevent this code from redefining it. */ +#if !defined(in_addr_t) && !defined(IN_ADDR_T_DEFINED) +typedef u32_t in_addr_t; +#endif + +struct in_addr { + in_addr_t s_addr; +}; + +struct in6_addr { + union { + u32_t u32_addr[4]; + u8_t u8_addr[16]; + } un; +#define s6_addr un.u8_addr +}; + +/** 255.255.255.255 */ +#define INADDR_NONE IPADDR_NONE +/** 127.0.0.1 */ +#define INADDR_LOOPBACK IPADDR_LOOPBACK +/** 0.0.0.0 */ +#define INADDR_ANY IPADDR_ANY +/** 255.255.255.255 */ +#define INADDR_BROADCAST IPADDR_BROADCAST + +/** This macro can be used to initialize a variable of type struct in6_addr + to the IPv6 wildcard address. */ +#define IN6ADDR_ANY_INIT {{{0,0,0,0}}} +/** This macro can be used to initialize a variable of type struct in6_addr + to the IPv6 loopback address. */ +#define IN6ADDR_LOOPBACK_INIT {{{0,0,0,PP_HTONL(1)}}} +/** This variable is initialized by the system to contain the wildcard IPv6 address. */ +extern const struct in6_addr in6addr_any; + +/* Definitions of the bits in an (IPv4) Internet address integer. + + On subnets, host and network parts are found according to + the subnet mask, not these masks. */ +#define IN_CLASSA(a) IP_CLASSA(a) +#define IN_CLASSA_NET IP_CLASSA_NET +#define IN_CLASSA_NSHIFT IP_CLASSA_NSHIFT +#define IN_CLASSA_HOST IP_CLASSA_HOST +#define IN_CLASSA_MAX IP_CLASSA_MAX + +#define IN_CLASSB(b) IP_CLASSB(b) +#define IN_CLASSB_NET IP_CLASSB_NET +#define IN_CLASSB_NSHIFT IP_CLASSB_NSHIFT +#define IN_CLASSB_HOST IP_CLASSB_HOST +#define IN_CLASSB_MAX IP_CLASSB_MAX + +#define IN_CLASSC(c) IP_CLASSC(c) +#define IN_CLASSC_NET IP_CLASSC_NET +#define IN_CLASSC_NSHIFT IP_CLASSC_NSHIFT +#define IN_CLASSC_HOST IP_CLASSC_HOST +#define IN_CLASSC_MAX IP_CLASSC_MAX + +#define IN_CLASSD(d) IP_CLASSD(d) +#define IN_CLASSD_NET IP_CLASSD_NET /* These ones aren't really */ +#define IN_CLASSD_NSHIFT IP_CLASSD_NSHIFT /* net and host fields, but */ +#define IN_CLASSD_HOST IP_CLASSD_HOST /* routing needn't know. */ +#define IN_CLASSD_MAX IP_CLASSD_MAX + +#define IN_MULTICAST(a) IP_MULTICAST(a) + +#define IN_EXPERIMENTAL(a) IP_EXPERIMENTAL(a) +#define IN_BADCLASS(a) IP_BADCLASS(a) + +#define IN_LOOPBACKNET IP_LOOPBACKNET + + +#ifndef INET_ADDRSTRLEN +#define INET_ADDRSTRLEN IP4ADDR_STRLEN_MAX +#endif +#if LWIP_IPV6 +#ifndef INET6_ADDRSTRLEN +#define INET6_ADDRSTRLEN IP6ADDR_STRLEN_MAX +#endif +#endif + +#if LWIP_IPV4 + +#define inet_addr_from_ip4addr(target_inaddr, source_ipaddr) ((target_inaddr)->s_addr = ip4_addr_get_u32(source_ipaddr)) +#define inet_addr_to_ip4addr(target_ipaddr, source_inaddr) (ip4_addr_set_u32(target_ipaddr, (source_inaddr)->s_addr)) + +/* directly map this to the lwip internal functions */ +#define inet_addr(cp) ipaddr_addr(cp) +#define inet_aton(cp, addr) ip4addr_aton(cp, (ip4_addr_t*)addr) +#define inet_ntoa(addr) ip4addr_ntoa((const ip4_addr_t*)&(addr)) +#define inet_ntoa_r(addr, buf, buflen) ip4addr_ntoa_r((const ip4_addr_t*)&(addr), buf, buflen) + +#endif /* LWIP_IPV4 */ + +#if LWIP_IPV6 +#define inet6_addr_from_ip6addr(target_in6addr, source_ip6addr) {(target_in6addr)->un.u32_addr[0] = (source_ip6addr)->addr[0]; \ + (target_in6addr)->un.u32_addr[1] = (source_ip6addr)->addr[1]; \ + (target_in6addr)->un.u32_addr[2] = (source_ip6addr)->addr[2]; \ + (target_in6addr)->un.u32_addr[3] = (source_ip6addr)->addr[3];} +#define inet6_addr_to_ip6addr(target_ip6addr, source_in6addr) {(target_ip6addr)->addr[0] = (source_in6addr)->un.u32_addr[0]; \ + (target_ip6addr)->addr[1] = (source_in6addr)->un.u32_addr[1]; \ + (target_ip6addr)->addr[2] = (source_in6addr)->un.u32_addr[2]; \ + (target_ip6addr)->addr[3] = (source_in6addr)->un.u32_addr[3]; \ + ip6_addr_clear_zone(target_ip6addr);} + +/* directly map this to the lwip internal functions */ +#define inet6_aton(cp, addr) ip6addr_aton(cp, (ip6_addr_t*)addr) +#define inet6_ntoa(addr) ip6addr_ntoa((const ip6_addr_t*)&(addr)) +#define inet6_ntoa_r(addr, buf, buflen) ip6addr_ntoa_r((const ip6_addr_t*)&(addr), buf, buflen) + +#endif /* LWIP_IPV6 */ + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_INET_H */ diff --git a/Other/tun2socks/core/c/include/lwip/inet_chksum.h b/Other/tun2socks/core/c/include/lwip/inet_chksum.h new file mode 100644 index 0000000..76893ef --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/inet_chksum.h @@ -0,0 +1,105 @@ +/** + * @file + * IP checksum calculation functions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_INET_CHKSUM_H +#define LWIP_HDR_INET_CHKSUM_H + +#include "lwip/opt.h" + +#include "lwip/pbuf.h" +#include "lwip/ip_addr.h" + +/** Swap the bytes in an u16_t: much like lwip_htons() for little-endian */ +#ifndef SWAP_BYTES_IN_WORD +#define SWAP_BYTES_IN_WORD(w) (((w) & 0xff) << 8) | (((w) & 0xff00) >> 8) +#endif /* SWAP_BYTES_IN_WORD */ + +/** Split an u32_t in two u16_ts and add them up */ +#ifndef FOLD_U32T +#define FOLD_U32T(u) ((u32_t)(((u) >> 16) + ((u) & 0x0000ffffUL))) +#endif + +#if LWIP_CHECKSUM_ON_COPY +/** Function-like macro: same as MEMCPY but returns the checksum of copied data + as u16_t */ +# ifndef LWIP_CHKSUM_COPY +# define LWIP_CHKSUM_COPY(dst, src, len) lwip_chksum_copy(dst, src, len) +# ifndef LWIP_CHKSUM_COPY_ALGORITHM +# define LWIP_CHKSUM_COPY_ALGORITHM 1 +# endif /* LWIP_CHKSUM_COPY_ALGORITHM */ +# else /* LWIP_CHKSUM_COPY */ +# define LWIP_CHKSUM_COPY_ALGORITHM 0 +# endif /* LWIP_CHKSUM_COPY */ +#else /* LWIP_CHECKSUM_ON_COPY */ +# define LWIP_CHKSUM_COPY_ALGORITHM 0 +#endif /* LWIP_CHECKSUM_ON_COPY */ + +#ifdef __cplusplus +extern "C" { +#endif + +u16_t inet_chksum(const void *dataptr, u16_t len); +u16_t inet_chksum_pbuf(struct pbuf *p); +#if LWIP_CHKSUM_COPY_ALGORITHM +u16_t lwip_chksum_copy(void *dst, const void *src, u16_t len); +#endif /* LWIP_CHKSUM_COPY_ALGORITHM */ + +#if LWIP_IPV4 +u16_t inet_chksum_pseudo(struct pbuf *p, u8_t proto, u16_t proto_len, + const ip4_addr_t *src, const ip4_addr_t *dest); +u16_t inet_chksum_pseudo_partial(struct pbuf *p, u8_t proto, + u16_t proto_len, u16_t chksum_len, const ip4_addr_t *src, const ip4_addr_t *dest); +#endif /* LWIP_IPV4 */ + +#if LWIP_IPV6 +u16_t ip6_chksum_pseudo(struct pbuf *p, u8_t proto, u16_t proto_len, + const ip6_addr_t *src, const ip6_addr_t *dest); +u16_t ip6_chksum_pseudo_partial(struct pbuf *p, u8_t proto, u16_t proto_len, + u16_t chksum_len, const ip6_addr_t *src, const ip6_addr_t *dest); +#endif /* LWIP_IPV6 */ + + +u16_t ip_chksum_pseudo(struct pbuf *p, u8_t proto, u16_t proto_len, + const ip_addr_t *src, const ip_addr_t *dest); +u16_t ip_chksum_pseudo_partial(struct pbuf *p, u8_t proto, u16_t proto_len, + u16_t chksum_len, const ip_addr_t *src, const ip_addr_t *dest); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_INET_H */ + diff --git a/Other/tun2socks/core/c/include/lwip/init.h b/Other/tun2socks/core/c/include/lwip/init.h new file mode 100644 index 0000000..a149be1 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/init.h @@ -0,0 +1,100 @@ +/** + * @file + * lwIP initialization API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_INIT_H +#define LWIP_HDR_INIT_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @defgroup lwip_version Version + * @ingroup lwip + * @{ + */ + +/** X.x.x: Major version of the stack */ +#define LWIP_VERSION_MAJOR 2 +/** x.X.x: Minor version of the stack */ +#define LWIP_VERSION_MINOR 1 +/** x.x.X: Revision of the stack */ +#define LWIP_VERSION_REVISION 2 +/** For release candidates, this is set to 1..254 + * For official releases, this is set to 255 (LWIP_RC_RELEASE) + * For development versions (Git), this is set to 0 (LWIP_RC_DEVELOPMENT) */ +#define LWIP_VERSION_RC LWIP_RC_RELEASE + +/** LWIP_VERSION_RC is set to LWIP_RC_RELEASE for official releases */ +#define LWIP_RC_RELEASE 255 +/** LWIP_VERSION_RC is set to LWIP_RC_DEVELOPMENT for Git versions */ +#define LWIP_RC_DEVELOPMENT 0 + +#define LWIP_VERSION_IS_RELEASE (LWIP_VERSION_RC == LWIP_RC_RELEASE) +#define LWIP_VERSION_IS_DEVELOPMENT (LWIP_VERSION_RC == LWIP_RC_DEVELOPMENT) +#define LWIP_VERSION_IS_RC ((LWIP_VERSION_RC != LWIP_RC_RELEASE) && (LWIP_VERSION_RC != LWIP_RC_DEVELOPMENT)) + +/* Some helper defines to get a version string */ +#define LWIP_VERSTR2(x) #x +#define LWIP_VERSTR(x) LWIP_VERSTR2(x) +#if LWIP_VERSION_IS_RELEASE +#define LWIP_VERSION_STRING_SUFFIX "" +#elif LWIP_VERSION_IS_DEVELOPMENT +#define LWIP_VERSION_STRING_SUFFIX "d" +#else +#define LWIP_VERSION_STRING_SUFFIX "rc" LWIP_VERSTR(LWIP_VERSION_RC) +#endif + +/** Provides the version of the stack */ +#define LWIP_VERSION ((LWIP_VERSION_MAJOR) << 24 | (LWIP_VERSION_MINOR) << 16 | \ + (LWIP_VERSION_REVISION) << 8 | (LWIP_VERSION_RC)) +/** Provides the version of the stack as string */ +#define LWIP_VERSION_STRING LWIP_VERSTR(LWIP_VERSION_MAJOR) "." LWIP_VERSTR(LWIP_VERSION_MINOR) "." LWIP_VERSTR(LWIP_VERSION_REVISION) LWIP_VERSION_STRING_SUFFIX + +/** + * @} + */ + +/* Modules initialization */ +void lwip_init(void); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_INIT_H */ diff --git a/Other/tun2socks/core/c/include/lwip/init.h.cmake.in b/Other/tun2socks/core/c/include/lwip/init.h.cmake.in new file mode 100644 index 0000000..9b609b7 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/init.h.cmake.in @@ -0,0 +1,100 @@ +/** + * @file + * lwIP initialization API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_INIT_H +#define LWIP_HDR_INIT_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @defgroup lwip_version Version + * @ingroup lwip + * @{ + */ + +/** X.x.x: Major version of the stack */ +#define LWIP_VERSION_MAJOR ${LWIP_VERSION_MAJOR} +/** x.X.x: Minor version of the stack */ +#define LWIP_VERSION_MINOR ${LWIP_VERSION_MINOR} +/** x.x.X: Revision of the stack */ +#define LWIP_VERSION_REVISION ${LWIP_VERSION_REVISION} +/** For release candidates, this is set to 1..254 + * For official releases, this is set to 255 (LWIP_RC_RELEASE) + * For development versions (Git), this is set to 0 (LWIP_RC_DEVELOPMENT) */ +#define LWIP_VERSION_RC ${LWIP_VERSION_RC} + +/** LWIP_VERSION_RC is set to LWIP_RC_RELEASE for official releases */ +#define LWIP_RC_RELEASE 255 +/** LWIP_VERSION_RC is set to LWIP_RC_DEVELOPMENT for Git versions */ +#define LWIP_RC_DEVELOPMENT 0 + +#define LWIP_VERSION_IS_RELEASE (LWIP_VERSION_RC == LWIP_RC_RELEASE) +#define LWIP_VERSION_IS_DEVELOPMENT (LWIP_VERSION_RC == LWIP_RC_DEVELOPMENT) +#define LWIP_VERSION_IS_RC ((LWIP_VERSION_RC != LWIP_RC_RELEASE) && (LWIP_VERSION_RC != LWIP_RC_DEVELOPMENT)) + +/* Some helper defines to get a version string */ +#define LWIP_VERSTR2(x) #x +#define LWIP_VERSTR(x) LWIP_VERSTR2(x) +#if LWIP_VERSION_IS_RELEASE +#define LWIP_VERSION_STRING_SUFFIX "" +#elif LWIP_VERSION_IS_DEVELOPMENT +#define LWIP_VERSION_STRING_SUFFIX "d" +#else +#define LWIP_VERSION_STRING_SUFFIX "rc" LWIP_VERSTR(LWIP_VERSION_RC) +#endif + +/** Provides the version of the stack */ +#define LWIP_VERSION ((LWIP_VERSION_MAJOR) << 24 | (LWIP_VERSION_MINOR) << 16 | \ + (LWIP_VERSION_REVISION) << 8 | (LWIP_VERSION_RC)) +/** Provides the version of the stack as string */ +#define LWIP_VERSION_STRING LWIP_VERSTR(LWIP_VERSION_MAJOR) "." LWIP_VERSTR(LWIP_VERSION_MINOR) "." LWIP_VERSTR(LWIP_VERSION_REVISION) LWIP_VERSION_STRING_SUFFIX + +/** + * @} + */ + +/* Modules initialization */ +void lwip_init(void); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_INIT_H */ diff --git a/Other/tun2socks/core/c/include/lwip/ip.h b/Other/tun2socks/core/c/include/lwip/ip.h new file mode 100644 index 0000000..653c3b2 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ip.h @@ -0,0 +1,330 @@ +/** + * @file + * IP API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_IP_H +#define LWIP_HDR_IP_H + +#include "lwip/opt.h" + +#include "lwip/def.h" +#include "lwip/pbuf.h" +#include "lwip/ip_addr.h" +#include "lwip/err.h" +#include "lwip/netif.h" +#include "lwip/ip4.h" +#include "lwip/ip6.h" +#include "lwip/prot/ip.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* This is passed as the destination address to ip_output_if (not + to ip_output), meaning that an IP header already is constructed + in the pbuf. This is used when TCP retransmits. */ +#define LWIP_IP_HDRINCL NULL + +/** pbufs passed to IP must have a ref-count of 1 as their payload pointer + gets altered as the packet is passed down the stack */ +#ifndef LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX +#define LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p) LWIP_ASSERT("p->ref == 1", (p)->ref == 1) +#endif + +#if LWIP_NETIF_USE_HINTS +#define IP_PCB_NETIFHINT ;struct netif_hint netif_hints +#else /* LWIP_NETIF_USE_HINTS */ +#define IP_PCB_NETIFHINT +#endif /* LWIP_NETIF_USE_HINTS */ + +/** This is the common part of all PCB types. It needs to be at the + beginning of a PCB type definition. It is located here so that + changes to this common part are made in one location instead of + having to change all PCB structs. */ +#define IP_PCB \ + /* ip addresses in network byte order */ \ + ip_addr_t local_ip; \ + ip_addr_t remote_ip; \ + /* Bound netif index */ \ + u8_t netif_idx; \ + /* Socket options */ \ + u8_t so_options; \ + /* Type Of Service */ \ + u8_t tos; \ + /* Time To Live */ \ + u8_t ttl \ + /* link layer address resolution hint */ \ + IP_PCB_NETIFHINT + +struct ip_pcb { + /* Common members of all PCB types */ + IP_PCB; +}; + +/* + * Option flags per-socket. These are the same like SO_XXX in sockets.h + */ +#define SOF_REUSEADDR 0x04U /* allow local address reuse */ +#define SOF_KEEPALIVE 0x08U /* keep connections alive */ +#define SOF_BROADCAST 0x20U /* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */ + +/* These flags are inherited (e.g. from a listen-pcb to a connection-pcb): */ +#define SOF_INHERITED (SOF_REUSEADDR|SOF_KEEPALIVE) + +/** Global variables of this module, kept in a struct for efficient access using base+index. */ +struct ip_globals +{ + /** The interface that accepted the packet for the current callback invocation. */ + struct netif *current_netif; + /** The interface that received the packet for the current callback invocation. */ + struct netif *current_input_netif; +#if LWIP_IPV4 + /** Header of the input packet currently being processed. */ + const struct ip_hdr *current_ip4_header; +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 + /** Header of the input IPv6 packet currently being processed. */ + struct ip6_hdr *current_ip6_header; +#endif /* LWIP_IPV6 */ + /** Total header length of current_ip4/6_header (i.e. after this, the UDP/TCP header starts) */ + u16_t current_ip_header_tot_len; + /** Source IP address of current_header */ + ip_addr_t current_iphdr_src; + /** Destination IP address of current_header */ + ip_addr_t current_iphdr_dest; +}; +extern struct ip_globals ip_data; + + +/** Get the interface that accepted the current packet. + * This may or may not be the receiving netif, depending on your netif/network setup. + * This function must only be called from a receive callback (udp_recv, + * raw_recv, tcp_accept). It will return NULL otherwise. */ +#define ip_current_netif() (ip_data.current_netif) +/** Get the interface that received the current packet. + * This function must only be called from a receive callback (udp_recv, + * raw_recv, tcp_accept). It will return NULL otherwise. */ +#define ip_current_input_netif() (ip_data.current_input_netif) +/** Total header length of ip(6)_current_header() (i.e. after this, the UDP/TCP header starts) */ +#define ip_current_header_tot_len() (ip_data.current_ip_header_tot_len) +/** Source IP address of current_header */ +#define ip_current_src_addr() (&ip_data.current_iphdr_src) +/** Destination IP address of current_header */ +#define ip_current_dest_addr() (&ip_data.current_iphdr_dest) + +#if LWIP_IPV4 && LWIP_IPV6 +/** Get the IPv4 header of the current packet. + * This function must only be called from a receive callback (udp_recv, + * raw_recv, tcp_accept). It will return NULL otherwise. */ +#define ip4_current_header() ip_data.current_ip4_header +/** Get the IPv6 header of the current packet. + * This function must only be called from a receive callback (udp_recv, + * raw_recv, tcp_accept). It will return NULL otherwise. */ +#define ip6_current_header() ((const struct ip6_hdr*)(ip_data.current_ip6_header)) +/** Returns TRUE if the current IP input packet is IPv6, FALSE if it is IPv4 */ +#define ip_current_is_v6() (ip6_current_header() != NULL) +/** Source IPv6 address of current_header */ +#define ip6_current_src_addr() (ip_2_ip6(&ip_data.current_iphdr_src)) +/** Destination IPv6 address of current_header */ +#define ip6_current_dest_addr() (ip_2_ip6(&ip_data.current_iphdr_dest)) +/** Get the transport layer protocol */ +#define ip_current_header_proto() (ip_current_is_v6() ? \ + IP6H_NEXTH(ip6_current_header()) :\ + IPH_PROTO(ip4_current_header())) +/** Get the transport layer header */ +#define ip_next_header_ptr() ((const void*)((ip_current_is_v6() ? \ + (const u8_t*)ip6_current_header() : (const u8_t*)ip4_current_header()) + ip_current_header_tot_len())) + +/** Source IP4 address of current_header */ +#define ip4_current_src_addr() (ip_2_ip4(&ip_data.current_iphdr_src)) +/** Destination IP4 address of current_header */ +#define ip4_current_dest_addr() (ip_2_ip4(&ip_data.current_iphdr_dest)) + +#elif LWIP_IPV4 /* LWIP_IPV4 && LWIP_IPV6 */ + +/** Get the IPv4 header of the current packet. + * This function must only be called from a receive callback (udp_recv, + * raw_recv, tcp_accept). It will return NULL otherwise. */ +#define ip4_current_header() ip_data.current_ip4_header +/** Always returns FALSE when only supporting IPv4 only */ +#define ip_current_is_v6() 0 +/** Get the transport layer protocol */ +#define ip_current_header_proto() IPH_PROTO(ip4_current_header()) +/** Get the transport layer header */ +#define ip_next_header_ptr() ((const void*)((const u8_t*)ip4_current_header() + ip_current_header_tot_len())) +/** Source IP4 address of current_header */ +#define ip4_current_src_addr() (&ip_data.current_iphdr_src) +/** Destination IP4 address of current_header */ +#define ip4_current_dest_addr() (&ip_data.current_iphdr_dest) + +#elif LWIP_IPV6 /* LWIP_IPV4 && LWIP_IPV6 */ + +/** Get the IPv6 header of the current packet. + * This function must only be called from a receive callback (udp_recv, + * raw_recv, tcp_accept). It will return NULL otherwise. */ +#define ip6_current_header() ((const struct ip6_hdr*)(ip_data.current_ip6_header)) +/** Always returns TRUE when only supporting IPv6 only */ +#define ip_current_is_v6() 1 +/** Get the transport layer protocol */ +#define ip_current_header_proto() IP6H_NEXTH(ip6_current_header()) +/** Get the transport layer header */ +#define ip_next_header_ptr() ((const void*)(((const u8_t*)ip6_current_header()) + ip_current_header_tot_len())) +/** Source IP6 address of current_header */ +#define ip6_current_src_addr() (&ip_data.current_iphdr_src) +/** Destination IP6 address of current_header */ +#define ip6_current_dest_addr() (&ip_data.current_iphdr_dest) + +#endif /* LWIP_IPV6 */ + +/** Union source address of current_header */ +#define ip_current_src_addr() (&ip_data.current_iphdr_src) +/** Union destination address of current_header */ +#define ip_current_dest_addr() (&ip_data.current_iphdr_dest) + +/** Gets an IP pcb option (SOF_* flags) */ +#define ip_get_option(pcb, opt) ((pcb)->so_options & (opt)) +/** Sets an IP pcb option (SOF_* flags) */ +#define ip_set_option(pcb, opt) ((pcb)->so_options = (u8_t)((pcb)->so_options | (opt))) +/** Resets an IP pcb option (SOF_* flags) */ +#define ip_reset_option(pcb, opt) ((pcb)->so_options = (u8_t)((pcb)->so_options & ~(opt))) + +#if LWIP_IPV4 && LWIP_IPV6 +/** + * @ingroup ip + * Output IP packet, netif is selected by source address + */ +#define ip_output(p, src, dest, ttl, tos, proto) \ + (IP_IS_V6(dest) ? \ + ip6_output(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto) : \ + ip4_output(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto)) +/** + * @ingroup ip + * Output IP packet to specified interface + */ +#define ip_output_if(p, src, dest, ttl, tos, proto, netif) \ + (IP_IS_V6(dest) ? \ + ip6_output_if(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto, netif) : \ + ip4_output_if(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto, netif)) +/** + * @ingroup ip + * Output IP packet to interface specifying source address + */ +#define ip_output_if_src(p, src, dest, ttl, tos, proto, netif) \ + (IP_IS_V6(dest) ? \ + ip6_output_if_src(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto, netif) : \ + ip4_output_if_src(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto, netif)) +/** Output IP packet that already includes an IP header. */ +#define ip_output_if_hdrincl(p, src, dest, netif) \ + (IP_IS_V6(dest) ? \ + ip6_output_if(p, ip_2_ip6(src), LWIP_IP_HDRINCL, 0, 0, 0, netif) : \ + ip4_output_if(p, ip_2_ip4(src), LWIP_IP_HDRINCL, 0, 0, 0, netif)) +/** Output IP packet with netif_hint */ +#define ip_output_hinted(p, src, dest, ttl, tos, proto, netif_hint) \ + (IP_IS_V6(dest) ? \ + ip6_output_hinted(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto, netif_hint) : \ + ip4_output_hinted(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto, netif_hint)) +/** + * @ingroup ip + * Get netif for address combination. See \ref ip6_route and \ref ip4_route + */ +#define ip_route(src, dest) \ + (IP_IS_V6(dest) ? \ + ip6_route(ip_2_ip6(src), ip_2_ip6(dest)) : \ + ip4_route_src(ip_2_ip4(src), ip_2_ip4(dest))) +/** + * @ingroup ip + * Get netif for IP. + */ +#define ip_netif_get_local_ip(netif, dest) (IP_IS_V6(dest) ? \ + ip6_netif_get_local_ip(netif, ip_2_ip6(dest)) : \ + ip4_netif_get_local_ip(netif)) +#define ip_debug_print(is_ipv6, p) ((is_ipv6) ? ip6_debug_print(p) : ip4_debug_print(p)) + +err_t ip_input(struct pbuf *p, struct netif *inp); + +#elif LWIP_IPV4 /* LWIP_IPV4 && LWIP_IPV6 */ + +#define ip_output(p, src, dest, ttl, tos, proto) \ + ip4_output(p, src, dest, ttl, tos, proto) +#define ip_output_if(p, src, dest, ttl, tos, proto, netif) \ + ip4_output_if(p, src, dest, ttl, tos, proto, netif) +#define ip_output_if_src(p, src, dest, ttl, tos, proto, netif) \ + ip4_output_if_src(p, src, dest, ttl, tos, proto, netif) +#define ip_output_hinted(p, src, dest, ttl, tos, proto, netif_hint) \ + ip4_output_hinted(p, src, dest, ttl, tos, proto, netif_hint) +#define ip_output_if_hdrincl(p, src, dest, netif) \ + ip4_output_if(p, src, LWIP_IP_HDRINCL, 0, 0, 0, netif) +#define ip_route(src, dest) \ + ip4_route_src(src, dest) +#define ip_netif_get_local_ip(netif, dest) \ + ip4_netif_get_local_ip(netif) +#define ip_debug_print(is_ipv6, p) ip4_debug_print(p) + +#define ip_input ip4_input + +#elif LWIP_IPV6 /* LWIP_IPV4 && LWIP_IPV6 */ + +#define ip_output(p, src, dest, ttl, tos, proto) \ + ip6_output(p, src, dest, ttl, tos, proto) +#define ip_output_if(p, src, dest, ttl, tos, proto, netif) \ + ip6_output_if(p, src, dest, ttl, tos, proto, netif) +#define ip_output_if_src(p, src, dest, ttl, tos, proto, netif) \ + ip6_output_if_src(p, src, dest, ttl, tos, proto, netif) +#define ip_output_hinted(p, src, dest, ttl, tos, proto, netif_hint) \ + ip6_output_hinted(p, src, dest, ttl, tos, proto, netif_hint) +#define ip_output_if_hdrincl(p, src, dest, netif) \ + ip6_output_if(p, src, LWIP_IP_HDRINCL, 0, 0, 0, netif) +#define ip_route(src, dest) \ + ip6_route(src, dest) +#define ip_netif_get_local_ip(netif, dest) \ + ip6_netif_get_local_ip(netif, dest) +#define ip_debug_print(is_ipv6, p) ip6_debug_print(p) + +#define ip_input ip6_input + +#endif /* LWIP_IPV6 */ + +#define ip_route_get_local_ip(src, dest, netif, ipaddr) do { \ + (netif) = ip_route(src, dest); \ + (ipaddr) = ip_netif_get_local_ip(netif, dest); \ +}while(0) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_IP_H */ + + diff --git a/Other/tun2socks/core/c/include/lwip/ip4.h b/Other/tun2socks/core/c/include/lwip/ip4.h new file mode 100644 index 0000000..fd35a33 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ip4.h @@ -0,0 +1,111 @@ +/** + * @file + * IPv4 API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_IP4_H +#define LWIP_HDR_IP4_H + +#include "lwip/opt.h" + +#if LWIP_IPV4 + +#include "lwip/def.h" +#include "lwip/pbuf.h" +#include "lwip/ip4_addr.h" +#include "lwip/err.h" +#include "lwip/netif.h" +#include "lwip/prot/ip4.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef LWIP_HOOK_IP4_ROUTE_SRC +#define LWIP_IPV4_SRC_ROUTING 1 +#else +#define LWIP_IPV4_SRC_ROUTING 0 +#endif + +/** Currently, the function ip_output_if_opt() is only used with IGMP */ +#define IP_OPTIONS_SEND (LWIP_IPV4 && LWIP_IGMP) + +#define ip_init() /* Compatibility define, no init needed. */ +struct netif *ip4_route(const ip4_addr_t *dest); +#if LWIP_IPV4_SRC_ROUTING +struct netif *ip4_route_src(const ip4_addr_t *src, const ip4_addr_t *dest); +#else /* LWIP_IPV4_SRC_ROUTING */ +#define ip4_route_src(src, dest) ip4_route(dest) +#endif /* LWIP_IPV4_SRC_ROUTING */ +err_t ip4_input(struct pbuf *p, struct netif *inp); +err_t ip4_output(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto); +err_t ip4_output_if(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto, struct netif *netif); +err_t ip4_output_if_src(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto, struct netif *netif); +#if LWIP_NETIF_USE_HINTS +err_t ip4_output_hinted(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto, struct netif_hint *netif_hint); +#endif /* LWIP_NETIF_USE_HINTS */ +#if IP_OPTIONS_SEND +err_t ip4_output_if_opt(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto, struct netif *netif, void *ip_options, + u16_t optlen); +err_t ip4_output_if_opt_src(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, + u8_t ttl, u8_t tos, u8_t proto, struct netif *netif, void *ip_options, + u16_t optlen); +#endif /* IP_OPTIONS_SEND */ + +#if LWIP_MULTICAST_TX_OPTIONS +void ip4_set_default_multicast_netif(struct netif* default_multicast_netif); +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + +#define ip4_netif_get_local_ip(netif) (((netif) != NULL) ? netif_ip_addr4(netif) : NULL) + +#if IP_DEBUG +void ip4_debug_print(struct pbuf *p); +#else +#define ip4_debug_print(p) +#endif /* IP_DEBUG */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV4 */ + +#endif /* LWIP_HDR_IP_H */ + + diff --git a/Other/tun2socks/core/c/include/lwip/ip4_addr.h b/Other/tun2socks/core/c/include/lwip/ip4_addr.h new file mode 100644 index 0000000..f244c4f --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ip4_addr.h @@ -0,0 +1,216 @@ +/** + * @file + * IPv4 address API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_IP4_ADDR_H +#define LWIP_HDR_IP4_ADDR_H + +#include "lwip/opt.h" +#include "lwip/def.h" + +#if LWIP_IPV4 + +#ifdef __cplusplus +extern "C" { +#endif + +/** This is the aligned version of ip4_addr_t, + used as local variable, on the stack, etc. */ +struct ip4_addr { + u32_t addr; +}; + +/** ip4_addr_t uses a struct for convenience only, so that the same defines can + * operate both on ip4_addr_t as well as on ip4_addr_p_t. */ +typedef struct ip4_addr ip4_addr_t; + +/* Forward declaration to not include netif.h */ +struct netif; + +/** 255.255.255.255 */ +#define IPADDR_NONE ((u32_t)0xffffffffUL) +/** 127.0.0.1 */ +#define IPADDR_LOOPBACK ((u32_t)0x7f000001UL) +/** 0.0.0.0 */ +#define IPADDR_ANY ((u32_t)0x00000000UL) +/** 255.255.255.255 */ +#define IPADDR_BROADCAST ((u32_t)0xffffffffUL) + +/* Definitions of the bits in an Internet address integer. + + On subnets, host and network parts are found according to + the subnet mask, not these masks. */ +#define IP_CLASSA(a) ((((u32_t)(a)) & 0x80000000UL) == 0) +#define IP_CLASSA_NET 0xff000000 +#define IP_CLASSA_NSHIFT 24 +#define IP_CLASSA_HOST (0xffffffff & ~IP_CLASSA_NET) +#define IP_CLASSA_MAX 128 + +#define IP_CLASSB(a) ((((u32_t)(a)) & 0xc0000000UL) == 0x80000000UL) +#define IP_CLASSB_NET 0xffff0000 +#define IP_CLASSB_NSHIFT 16 +#define IP_CLASSB_HOST (0xffffffff & ~IP_CLASSB_NET) +#define IP_CLASSB_MAX 65536 + +#define IP_CLASSC(a) ((((u32_t)(a)) & 0xe0000000UL) == 0xc0000000UL) +#define IP_CLASSC_NET 0xffffff00 +#define IP_CLASSC_NSHIFT 8 +#define IP_CLASSC_HOST (0xffffffff & ~IP_CLASSC_NET) + +#define IP_CLASSD(a) (((u32_t)(a) & 0xf0000000UL) == 0xe0000000UL) +#define IP_CLASSD_NET 0xf0000000 /* These ones aren't really */ +#define IP_CLASSD_NSHIFT 28 /* net and host fields, but */ +#define IP_CLASSD_HOST 0x0fffffff /* routing needn't know. */ +#define IP_MULTICAST(a) IP_CLASSD(a) + +#define IP_EXPERIMENTAL(a) (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL) +#define IP_BADCLASS(a) (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL) + +#define IP_LOOPBACKNET 127 /* official! */ + +/** Set an IP address given by the four byte-parts */ +#define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->addr = PP_HTONL(LWIP_MAKEU32(a,b,c,d)) + +/** Copy IP address - faster than ip4_addr_set: no NULL check */ +#define ip4_addr_copy(dest, src) ((dest).addr = (src).addr) +/** Safely copy one IP address to another (src may be NULL) */ +#define ip4_addr_set(dest, src) ((dest)->addr = \ + ((src) == NULL ? 0 : \ + (src)->addr)) +/** Set complete address to zero */ +#define ip4_addr_set_zero(ipaddr) ((ipaddr)->addr = 0) +/** Set address to IPADDR_ANY (no need for lwip_htonl()) */ +#define ip4_addr_set_any(ipaddr) ((ipaddr)->addr = IPADDR_ANY) +/** Set address to loopback address */ +#define ip4_addr_set_loopback(ipaddr) ((ipaddr)->addr = PP_HTONL(IPADDR_LOOPBACK)) +/** Check if an address is in the loopback region */ +#define ip4_addr_isloopback(ipaddr) (((ipaddr)->addr & PP_HTONL(IP_CLASSA_NET)) == PP_HTONL(((u32_t)IP_LOOPBACKNET) << 24)) +/** Safely copy one IP address to another and change byte order + * from host- to network-order. */ +#define ip4_addr_set_hton(dest, src) ((dest)->addr = \ + ((src) == NULL ? 0:\ + lwip_htonl((src)->addr))) +/** IPv4 only: set the IP address given as an u32_t */ +#define ip4_addr_set_u32(dest_ipaddr, src_u32) ((dest_ipaddr)->addr = (src_u32)) +/** IPv4 only: get the IP address as an u32_t */ +#define ip4_addr_get_u32(src_ipaddr) ((src_ipaddr)->addr) + +/** Get the network address by combining host address with netmask */ +#define ip4_addr_get_network(target, host, netmask) do { ((target)->addr = ((host)->addr) & ((netmask)->addr)); } while(0) + +/** + * Determine if two address are on the same network. + * + * @arg addr1 IP address 1 + * @arg addr2 IP address 2 + * @arg mask network identifier mask + * @return !0 if the network identifiers of both address match + */ +#define ip4_addr_netcmp(addr1, addr2, mask) (((addr1)->addr & \ + (mask)->addr) == \ + ((addr2)->addr & \ + (mask)->addr)) +#define ip4_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr) + +#define ip4_addr_isany_val(addr1) ((addr1).addr == IPADDR_ANY) +#define ip4_addr_isany(addr1) ((addr1) == NULL || ip4_addr_isany_val(*(addr1))) + +#define ip4_addr_isbroadcast(addr1, netif) ip4_addr_isbroadcast_u32((addr1)->addr, netif) +u8_t ip4_addr_isbroadcast_u32(u32_t addr, const struct netif *netif); + +#define ip_addr_netmask_valid(netmask) ip4_addr_netmask_valid((netmask)->addr) +u8_t ip4_addr_netmask_valid(u32_t netmask); + +#define ip4_addr_ismulticast(addr1) (((addr1)->addr & PP_HTONL(0xf0000000UL)) == PP_HTONL(0xe0000000UL)) + +#define ip4_addr_islinklocal(addr1) (((addr1)->addr & PP_HTONL(0xffff0000UL)) == PP_HTONL(0xa9fe0000UL)) + +#define ip4_addr_debug_print_parts(debug, a, b, c, d) \ + LWIP_DEBUGF(debug, ("%" U16_F ".%" U16_F ".%" U16_F ".%" U16_F, a, b, c, d)) +#define ip4_addr_debug_print(debug, ipaddr) \ + ip4_addr_debug_print_parts(debug, \ + (u16_t)((ipaddr) != NULL ? ip4_addr1_16(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? ip4_addr2_16(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? ip4_addr3_16(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? ip4_addr4_16(ipaddr) : 0)) +#define ip4_addr_debug_print_val(debug, ipaddr) \ + ip4_addr_debug_print_parts(debug, \ + ip4_addr1_16_val(ipaddr), \ + ip4_addr2_16_val(ipaddr), \ + ip4_addr3_16_val(ipaddr), \ + ip4_addr4_16_val(ipaddr)) + +/* Get one byte from the 4-byte address */ +#define ip4_addr_get_byte(ipaddr, idx) (((const u8_t*)(&(ipaddr)->addr))[idx]) +#define ip4_addr1(ipaddr) ip4_addr_get_byte(ipaddr, 0) +#define ip4_addr2(ipaddr) ip4_addr_get_byte(ipaddr, 1) +#define ip4_addr3(ipaddr) ip4_addr_get_byte(ipaddr, 2) +#define ip4_addr4(ipaddr) ip4_addr_get_byte(ipaddr, 3) +/* Get one byte from the 4-byte address, but argument is 'ip4_addr_t', + * not a pointer */ +#define ip4_addr_get_byte_val(ipaddr, idx) ((u8_t)(((ipaddr).addr >> (idx * 8)) & 0xff)) +#define ip4_addr1_val(ipaddr) ip4_addr_get_byte_val(ipaddr, 0) +#define ip4_addr2_val(ipaddr) ip4_addr_get_byte_val(ipaddr, 1) +#define ip4_addr3_val(ipaddr) ip4_addr_get_byte_val(ipaddr, 2) +#define ip4_addr4_val(ipaddr) ip4_addr_get_byte_val(ipaddr, 3) +/* These are cast to u16_t, with the intent that they are often arguments + * to printf using the U16_F format from cc.h. */ +#define ip4_addr1_16(ipaddr) ((u16_t)ip4_addr1(ipaddr)) +#define ip4_addr2_16(ipaddr) ((u16_t)ip4_addr2(ipaddr)) +#define ip4_addr3_16(ipaddr) ((u16_t)ip4_addr3(ipaddr)) +#define ip4_addr4_16(ipaddr) ((u16_t)ip4_addr4(ipaddr)) +#define ip4_addr1_16_val(ipaddr) ((u16_t)ip4_addr1_val(ipaddr)) +#define ip4_addr2_16_val(ipaddr) ((u16_t)ip4_addr2_val(ipaddr)) +#define ip4_addr3_16_val(ipaddr) ((u16_t)ip4_addr3_val(ipaddr)) +#define ip4_addr4_16_val(ipaddr) ((u16_t)ip4_addr4_val(ipaddr)) + +#define IP4ADDR_STRLEN_MAX 16 + +/** For backwards compatibility */ +#define ip_ntoa(ipaddr) ipaddr_ntoa(ipaddr) + +u32_t ipaddr_addr(const char *cp); +int ip4addr_aton(const char *cp, ip4_addr_t *addr); +/** returns ptr to static buffer; not reentrant! */ +char *ip4addr_ntoa(const ip4_addr_t *addr); +char *ip4addr_ntoa_r(const ip4_addr_t *addr, char *buf, int buflen); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV4 */ + +#endif /* LWIP_HDR_IP_ADDR_H */ diff --git a/Other/tun2socks/core/c/include/lwip/ip4_frag.h b/Other/tun2socks/core/c/include/lwip/ip4_frag.h new file mode 100644 index 0000000..ed5bf14 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ip4_frag.h @@ -0,0 +1,100 @@ +/** + * @file + * IP fragmentation/reassembly + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Jani Monoses + * + */ + +#ifndef LWIP_HDR_IP4_FRAG_H +#define LWIP_HDR_IP4_FRAG_H + +#include "lwip/opt.h" +#include "lwip/err.h" +#include "lwip/pbuf.h" +#include "lwip/netif.h" +#include "lwip/ip_addr.h" +#include "lwip/ip.h" + +#if LWIP_IPV4 + +#ifdef __cplusplus +extern "C" { +#endif + +#if IP_REASSEMBLY +/* The IP reassembly timer interval in milliseconds. */ +#define IP_TMR_INTERVAL 1000 + +/** IP reassembly helper struct. + * This is exported because memp needs to know the size. + */ +struct ip_reassdata { + struct ip_reassdata *next; + struct pbuf *p; + struct ip_hdr iphdr; + u16_t datagram_len; + u8_t flags; + u8_t timer; +}; + +void ip_reass_init(void); +void ip_reass_tmr(void); +struct pbuf * ip4_reass(struct pbuf *p); +#endif /* IP_REASSEMBLY */ + +#if IP_FRAG +#if !LWIP_NETIF_TX_SINGLE_PBUF +#ifndef LWIP_PBUF_CUSTOM_REF_DEFINED +#define LWIP_PBUF_CUSTOM_REF_DEFINED +/** A custom pbuf that holds a reference to another pbuf, which is freed + * when this custom pbuf is freed. This is used to create a custom PBUF_REF + * that points into the original pbuf. */ +struct pbuf_custom_ref { + /** 'base class' */ + struct pbuf_custom pc; + /** pointer to the original pbuf that is referenced */ + struct pbuf *original; +}; +#endif /* LWIP_PBUF_CUSTOM_REF_DEFINED */ +#endif /* !LWIP_NETIF_TX_SINGLE_PBUF */ + +err_t ip4_frag(struct pbuf *p, struct netif *netif, const ip4_addr_t *dest); +#endif /* IP_FRAG */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV4 */ + +#endif /* LWIP_HDR_IP4_FRAG_H */ diff --git a/Other/tun2socks/core/c/include/lwip/ip6.h b/Other/tun2socks/core/c/include/lwip/ip6.h new file mode 100644 index 0000000..f894e06 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ip6.h @@ -0,0 +1,93 @@ +/** + * @file + * + * IPv6 layer. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ +#ifndef LWIP_HDR_IP6_H +#define LWIP_HDR_IP6_H + +#include "lwip/opt.h" + +#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/ip6_addr.h" +#include "lwip/prot/ip6.h" +#include "lwip/def.h" +#include "lwip/pbuf.h" +#include "lwip/netif.h" + +#include "lwip/err.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct netif *ip6_route(const ip6_addr_t *src, const ip6_addr_t *dest); +const ip_addr_t *ip6_select_source_address(struct netif *netif, const ip6_addr_t * dest); +err_t ip6_input(struct pbuf *p, struct netif *inp); +err_t ip6_output(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, + u8_t hl, u8_t tc, u8_t nexth); +err_t ip6_output_if(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, + u8_t hl, u8_t tc, u8_t nexth, struct netif *netif); +err_t ip6_output_if_src(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, + u8_t hl, u8_t tc, u8_t nexth, struct netif *netif); +#if LWIP_NETIF_USE_HINTS +err_t ip6_output_hinted(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, + u8_t hl, u8_t tc, u8_t nexth, struct netif_hint *netif_hint); +#endif /* LWIP_NETIF_USE_HINTS */ +#if LWIP_IPV6_MLD +err_t ip6_options_add_hbh_ra(struct pbuf * p, u8_t nexth, u8_t value); +#endif /* LWIP_IPV6_MLD */ + +#define ip6_netif_get_local_ip(netif, dest) (((netif) != NULL) ? \ + ip6_select_source_address(netif, dest) : NULL) + +#if IP6_DEBUG +void ip6_debug_print(struct pbuf *p); +#else +#define ip6_debug_print(p) +#endif /* IP6_DEBUG */ + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6 */ + +#endif /* LWIP_HDR_IP6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/ip6_addr.h b/Other/tun2socks/core/c/include/lwip/ip6_addr.h new file mode 100644 index 0000000..29c2a34 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ip6_addr.h @@ -0,0 +1,352 @@ +/** + * @file + * + * IPv6 addresses. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * Structs and macros for handling IPv6 addresses. + * + * Please coordinate changes and requests with Ivan Delamer + * + */ +#ifndef LWIP_HDR_IP6_ADDR_H +#define LWIP_HDR_IP6_ADDR_H + +#include "lwip/opt.h" +#include "def.h" + +#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/ip6_zone.h" + +#ifdef __cplusplus +extern "C" { +#endif + + +/** This is the aligned version of ip6_addr_t, + used as local variable, on the stack, etc. */ +struct ip6_addr { + u32_t addr[4]; +#if LWIP_IPV6_SCOPES + u8_t zone; +#endif /* LWIP_IPV6_SCOPES */ +}; + +/** IPv6 address */ +typedef struct ip6_addr ip6_addr_t; + +/** Set an IPv6 partial address given by byte-parts */ +#define IP6_ADDR_PART(ip6addr, index, a,b,c,d) \ + (ip6addr)->addr[index] = PP_HTONL(LWIP_MAKEU32(a,b,c,d)) + +/** Set a full IPv6 address by passing the 4 u32_t indices in network byte order + (use PP_HTONL() for constants) */ +#define IP6_ADDR(ip6addr, idx0, idx1, idx2, idx3) do { \ + (ip6addr)->addr[0] = idx0; \ + (ip6addr)->addr[1] = idx1; \ + (ip6addr)->addr[2] = idx2; \ + (ip6addr)->addr[3] = idx3; \ + ip6_addr_clear_zone(ip6addr); } while(0) + +/** Access address in 16-bit block */ +#define IP6_ADDR_BLOCK1(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[0]) >> 16) & 0xffff)) +/** Access address in 16-bit block */ +#define IP6_ADDR_BLOCK2(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[0])) & 0xffff)) +/** Access address in 16-bit block */ +#define IP6_ADDR_BLOCK3(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[1]) >> 16) & 0xffff)) +/** Access address in 16-bit block */ +#define IP6_ADDR_BLOCK4(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[1])) & 0xffff)) +/** Access address in 16-bit block */ +#define IP6_ADDR_BLOCK5(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[2]) >> 16) & 0xffff)) +/** Access address in 16-bit block */ +#define IP6_ADDR_BLOCK6(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[2])) & 0xffff)) +/** Access address in 16-bit block */ +#define IP6_ADDR_BLOCK7(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[3]) >> 16) & 0xffff)) +/** Access address in 16-bit block */ +#define IP6_ADDR_BLOCK8(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[3])) & 0xffff)) + +/** Copy IPv6 address - faster than ip6_addr_set: no NULL check */ +#define ip6_addr_copy(dest, src) do{(dest).addr[0] = (src).addr[0]; \ + (dest).addr[1] = (src).addr[1]; \ + (dest).addr[2] = (src).addr[2]; \ + (dest).addr[3] = (src).addr[3]; \ + ip6_addr_copy_zone((dest), (src)); }while(0) +/** Safely copy one IPv6 address to another (src may be NULL) */ +#define ip6_addr_set(dest, src) do{(dest)->addr[0] = (src) == NULL ? 0 : (src)->addr[0]; \ + (dest)->addr[1] = (src) == NULL ? 0 : (src)->addr[1]; \ + (dest)->addr[2] = (src) == NULL ? 0 : (src)->addr[2]; \ + (dest)->addr[3] = (src) == NULL ? 0 : (src)->addr[3]; \ + ip6_addr_set_zone((dest), (src) == NULL ? IP6_NO_ZONE : ip6_addr_zone(src)); }while(0) + +/** Copy packed IPv6 address to unpacked IPv6 address; zone is not set */ +#define ip6_addr_copy_from_packed(dest, src) do{(dest).addr[0] = (src).addr[0]; \ + (dest).addr[1] = (src).addr[1]; \ + (dest).addr[2] = (src).addr[2]; \ + (dest).addr[3] = (src).addr[3]; \ + ip6_addr_clear_zone(&dest); }while(0) + +/** Copy unpacked IPv6 address to packed IPv6 address; zone is lost */ +#define ip6_addr_copy_to_packed(dest, src) do{(dest).addr[0] = (src).addr[0]; \ + (dest).addr[1] = (src).addr[1]; \ + (dest).addr[2] = (src).addr[2]; \ + (dest).addr[3] = (src).addr[3]; }while(0) + +/** Set complete address to zero */ +#define ip6_addr_set_zero(ip6addr) do{(ip6addr)->addr[0] = 0; \ + (ip6addr)->addr[1] = 0; \ + (ip6addr)->addr[2] = 0; \ + (ip6addr)->addr[3] = 0; \ + ip6_addr_clear_zone(ip6addr);}while(0) + +/** Set address to ipv6 'any' (no need for lwip_htonl()) */ +#define ip6_addr_set_any(ip6addr) ip6_addr_set_zero(ip6addr) +/** Set address to ipv6 loopback address */ +#define ip6_addr_set_loopback(ip6addr) do{(ip6addr)->addr[0] = 0; \ + (ip6addr)->addr[1] = 0; \ + (ip6addr)->addr[2] = 0; \ + (ip6addr)->addr[3] = PP_HTONL(0x00000001UL); \ + ip6_addr_clear_zone(ip6addr);}while(0) +/** Safely copy one IPv6 address to another and change byte order + * from host- to network-order. */ +#define ip6_addr_set_hton(dest, src) do{(dest)->addr[0] = (src) == NULL ? 0 : lwip_htonl((src)->addr[0]); \ + (dest)->addr[1] = (src) == NULL ? 0 : lwip_htonl((src)->addr[1]); \ + (dest)->addr[2] = (src) == NULL ? 0 : lwip_htonl((src)->addr[2]); \ + (dest)->addr[3] = (src) == NULL ? 0 : lwip_htonl((src)->addr[3]); \ + ip6_addr_set_zone((dest), (src) == NULL ? IP6_NO_ZONE : ip6_addr_zone(src));}while(0) + + +/** Compare IPv6 networks, ignoring zone information. To be used sparingly! */ +#define ip6_addr_netcmp_zoneless(addr1, addr2) (((addr1)->addr[0] == (addr2)->addr[0]) && \ + ((addr1)->addr[1] == (addr2)->addr[1])) + +/** + * Determine if two IPv6 address are on the same network. + * + * @param addr1 IPv6 address 1 + * @param addr2 IPv6 address 2 + * @return 1 if the network identifiers of both address match, 0 if not + */ +#define ip6_addr_netcmp(addr1, addr2) (ip6_addr_netcmp_zoneless((addr1), (addr2)) && \ + ip6_addr_cmp_zone((addr1), (addr2))) + +/* Exact-host comparison *after* ip6_addr_netcmp() succeeded, for efficiency. */ +#define ip6_addr_nethostcmp(addr1, addr2) (((addr1)->addr[2] == (addr2)->addr[2]) && \ + ((addr1)->addr[3] == (addr2)->addr[3])) + +/** Compare IPv6 addresses, ignoring zone information. To be used sparingly! */ +#define ip6_addr_cmp_zoneless(addr1, addr2) (((addr1)->addr[0] == (addr2)->addr[0]) && \ + ((addr1)->addr[1] == (addr2)->addr[1]) && \ + ((addr1)->addr[2] == (addr2)->addr[2]) && \ + ((addr1)->addr[3] == (addr2)->addr[3])) +/** + * Determine if two IPv6 addresses are the same. In particular, the address + * part of both must be the same, and the zone must be compatible. + * + * @param addr1 IPv6 address 1 + * @param addr2 IPv6 address 2 + * @return 1 if the addresses are considered equal, 0 if not + */ +#define ip6_addr_cmp(addr1, addr2) (ip6_addr_cmp_zoneless((addr1), (addr2)) && \ + ip6_addr_cmp_zone((addr1), (addr2))) + +/** Compare IPv6 address to packed address and zone */ +#define ip6_addr_cmp_packed(ip6addr, paddr, zone_idx) (((ip6addr)->addr[0] == (paddr)->addr[0]) && \ + ((ip6addr)->addr[1] == (paddr)->addr[1]) && \ + ((ip6addr)->addr[2] == (paddr)->addr[2]) && \ + ((ip6addr)->addr[3] == (paddr)->addr[3]) && \ + ip6_addr_equals_zone((ip6addr), (zone_idx))) + +#define ip6_get_subnet_id(ip6addr) (lwip_htonl((ip6addr)->addr[2]) & 0x0000ffffUL) + +#define ip6_addr_isany_val(ip6addr) (((ip6addr).addr[0] == 0) && \ + ((ip6addr).addr[1] == 0) && \ + ((ip6addr).addr[2] == 0) && \ + ((ip6addr).addr[3] == 0)) +#define ip6_addr_isany(ip6addr) (((ip6addr) == NULL) || ip6_addr_isany_val(*(ip6addr))) + +#define ip6_addr_isloopback(ip6addr) (((ip6addr)->addr[0] == 0UL) && \ + ((ip6addr)->addr[1] == 0UL) && \ + ((ip6addr)->addr[2] == 0UL) && \ + ((ip6addr)->addr[3] == PP_HTONL(0x00000001UL))) + +#define ip6_addr_isglobal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xe0000000UL)) == PP_HTONL(0x20000000UL)) + +#define ip6_addr_islinklocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xffc00000UL)) == PP_HTONL(0xfe800000UL)) + +#define ip6_addr_issitelocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xffc00000UL)) == PP_HTONL(0xfec00000UL)) + +#define ip6_addr_isuniquelocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xfe000000UL)) == PP_HTONL(0xfc000000UL)) + +#define ip6_addr_isipv4mappedipv6(ip6addr) (((ip6addr)->addr[0] == 0) && ((ip6addr)->addr[1] == 0) && (((ip6addr)->addr[2]) == PP_HTONL(0x0000FFFFUL))) + +#define ip6_addr_ismulticast(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff000000UL)) == PP_HTONL(0xff000000UL)) +#define ip6_addr_multicast_transient_flag(ip6addr) ((ip6addr)->addr[0] & PP_HTONL(0x00100000UL)) +#define ip6_addr_multicast_prefix_flag(ip6addr) ((ip6addr)->addr[0] & PP_HTONL(0x00200000UL)) +#define ip6_addr_multicast_rendezvous_flag(ip6addr) ((ip6addr)->addr[0] & PP_HTONL(0x00400000UL)) +#define ip6_addr_multicast_scope(ip6addr) ((lwip_htonl((ip6addr)->addr[0]) >> 16) & 0xf) +#define IP6_MULTICAST_SCOPE_RESERVED 0x0 +#define IP6_MULTICAST_SCOPE_RESERVED0 0x0 +#define IP6_MULTICAST_SCOPE_INTERFACE_LOCAL 0x1 +#define IP6_MULTICAST_SCOPE_LINK_LOCAL 0x2 +#define IP6_MULTICAST_SCOPE_RESERVED3 0x3 +#define IP6_MULTICAST_SCOPE_ADMIN_LOCAL 0x4 +#define IP6_MULTICAST_SCOPE_SITE_LOCAL 0x5 +#define IP6_MULTICAST_SCOPE_ORGANIZATION_LOCAL 0x8 +#define IP6_MULTICAST_SCOPE_GLOBAL 0xe +#define IP6_MULTICAST_SCOPE_RESERVEDF 0xf +#define ip6_addr_ismulticast_iflocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff010000UL)) +#define ip6_addr_ismulticast_linklocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff020000UL)) +#define ip6_addr_ismulticast_adminlocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff040000UL)) +#define ip6_addr_ismulticast_sitelocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff050000UL)) +#define ip6_addr_ismulticast_orglocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff080000UL)) +#define ip6_addr_ismulticast_global(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff0e0000UL)) + +/* Scoping note: while interface-local and link-local multicast addresses do + * have a scope (i.e., they are meaningful only in the context of a particular + * interface), the following functions are not assigning or comparing zone + * indices. The reason for this is backward compatibility. Any call site that + * produces a non-global multicast address must assign a multicast address as + * appropriate itself. */ + +#define ip6_addr_isallnodes_iflocal(ip6addr) (((ip6addr)->addr[0] == PP_HTONL(0xff010000UL)) && \ + ((ip6addr)->addr[1] == 0UL) && \ + ((ip6addr)->addr[2] == 0UL) && \ + ((ip6addr)->addr[3] == PP_HTONL(0x00000001UL))) + +#define ip6_addr_isallnodes_linklocal(ip6addr) (((ip6addr)->addr[0] == PP_HTONL(0xff020000UL)) && \ + ((ip6addr)->addr[1] == 0UL) && \ + ((ip6addr)->addr[2] == 0UL) && \ + ((ip6addr)->addr[3] == PP_HTONL(0x00000001UL))) +#define ip6_addr_set_allnodes_linklocal(ip6addr) do{(ip6addr)->addr[0] = PP_HTONL(0xff020000UL); \ + (ip6addr)->addr[1] = 0; \ + (ip6addr)->addr[2] = 0; \ + (ip6addr)->addr[3] = PP_HTONL(0x00000001UL); \ + ip6_addr_clear_zone(ip6addr); }while(0) + +#define ip6_addr_isallrouters_linklocal(ip6addr) (((ip6addr)->addr[0] == PP_HTONL(0xff020000UL)) && \ + ((ip6addr)->addr[1] == 0UL) && \ + ((ip6addr)->addr[2] == 0UL) && \ + ((ip6addr)->addr[3] == PP_HTONL(0x00000002UL))) +#define ip6_addr_set_allrouters_linklocal(ip6addr) do{(ip6addr)->addr[0] = PP_HTONL(0xff020000UL); \ + (ip6addr)->addr[1] = 0; \ + (ip6addr)->addr[2] = 0; \ + (ip6addr)->addr[3] = PP_HTONL(0x00000002UL); \ + ip6_addr_clear_zone(ip6addr); }while(0) + +#define ip6_addr_issolicitednode(ip6addr) ( ((ip6addr)->addr[0] == PP_HTONL(0xff020000UL)) && \ + ((ip6addr)->addr[2] == PP_HTONL(0x00000001UL)) && \ + (((ip6addr)->addr[3] & PP_HTONL(0xff000000UL)) == PP_HTONL(0xff000000UL)) ) + +#define ip6_addr_set_solicitednode(ip6addr, if_id) do{(ip6addr)->addr[0] = PP_HTONL(0xff020000UL); \ + (ip6addr)->addr[1] = 0; \ + (ip6addr)->addr[2] = PP_HTONL(0x00000001UL); \ + (ip6addr)->addr[3] = (PP_HTONL(0xff000000UL) | (if_id)); \ + ip6_addr_clear_zone(ip6addr); }while(0) + +#define ip6_addr_cmp_solicitednode(ip6addr, sn_addr) (((ip6addr)->addr[0] == PP_HTONL(0xff020000UL)) && \ + ((ip6addr)->addr[1] == 0) && \ + ((ip6addr)->addr[2] == PP_HTONL(0x00000001UL)) && \ + ((ip6addr)->addr[3] == (PP_HTONL(0xff000000UL) | (sn_addr)->addr[3]))) + +/* IPv6 address states. */ +#define IP6_ADDR_INVALID 0x00 +#define IP6_ADDR_TENTATIVE 0x08 +#define IP6_ADDR_TENTATIVE_1 0x09 /* 1 probe sent */ +#define IP6_ADDR_TENTATIVE_2 0x0a /* 2 probes sent */ +#define IP6_ADDR_TENTATIVE_3 0x0b /* 3 probes sent */ +#define IP6_ADDR_TENTATIVE_4 0x0c /* 4 probes sent */ +#define IP6_ADDR_TENTATIVE_5 0x0d /* 5 probes sent */ +#define IP6_ADDR_TENTATIVE_6 0x0e /* 6 probes sent */ +#define IP6_ADDR_TENTATIVE_7 0x0f /* 7 probes sent */ +#define IP6_ADDR_VALID 0x10 /* This bit marks an address as valid (preferred or deprecated) */ +#define IP6_ADDR_PREFERRED 0x30 +#define IP6_ADDR_DEPRECATED 0x10 /* Same as VALID (valid but not preferred) */ +#define IP6_ADDR_DUPLICATED 0x40 /* Failed DAD test, not valid */ + +#define IP6_ADDR_TENTATIVE_COUNT_MASK 0x07 /* 1-7 probes sent */ + +#define ip6_addr_isinvalid(addr_state) (addr_state == IP6_ADDR_INVALID) +#define ip6_addr_istentative(addr_state) (addr_state & IP6_ADDR_TENTATIVE) +#define ip6_addr_isvalid(addr_state) (addr_state & IP6_ADDR_VALID) /* Include valid, preferred, and deprecated. */ +#define ip6_addr_ispreferred(addr_state) (addr_state == IP6_ADDR_PREFERRED) +#define ip6_addr_isdeprecated(addr_state) (addr_state == IP6_ADDR_DEPRECATED) +#define ip6_addr_isduplicated(addr_state) (addr_state == IP6_ADDR_DUPLICATED) + +#if LWIP_IPV6_ADDRESS_LIFETIMES +#define IP6_ADDR_LIFE_STATIC (0) +#define IP6_ADDR_LIFE_INFINITE (0xffffffffUL) +#define ip6_addr_life_isstatic(addr_life) ((addr_life) == IP6_ADDR_LIFE_STATIC) +#define ip6_addr_life_isinfinite(addr_life) ((addr_life) == IP6_ADDR_LIFE_INFINITE) +#endif /* LWIP_IPV6_ADDRESS_LIFETIMES */ + +#define ip6_addr_debug_print_parts(debug, a, b, c, d, e, f, g, h) \ + LWIP_DEBUGF(debug, ("%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F, \ + a, b, c, d, e, f, g, h)) +#define ip6_addr_debug_print(debug, ipaddr) \ + ip6_addr_debug_print_parts(debug, \ + (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK1(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK2(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK3(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK4(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK5(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK6(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK7(ipaddr) : 0), \ + (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK8(ipaddr) : 0)) +#define ip6_addr_debug_print_val(debug, ipaddr) \ + ip6_addr_debug_print_parts(debug, \ + IP6_ADDR_BLOCK1(&(ipaddr)), \ + IP6_ADDR_BLOCK2(&(ipaddr)), \ + IP6_ADDR_BLOCK3(&(ipaddr)), \ + IP6_ADDR_BLOCK4(&(ipaddr)), \ + IP6_ADDR_BLOCK5(&(ipaddr)), \ + IP6_ADDR_BLOCK6(&(ipaddr)), \ + IP6_ADDR_BLOCK7(&(ipaddr)), \ + IP6_ADDR_BLOCK8(&(ipaddr))) + +#define IP6ADDR_STRLEN_MAX 46 + +int ip6addr_aton(const char *cp, ip6_addr_t *addr); +/** returns ptr to static buffer; not reentrant! */ +char *ip6addr_ntoa(const ip6_addr_t *addr); +char *ip6addr_ntoa_r(const ip6_addr_t *addr, char *buf, int buflen); + + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6 */ + +#endif /* LWIP_HDR_IP6_ADDR_H */ diff --git a/Other/tun2socks/core/c/include/lwip/ip6_frag.h b/Other/tun2socks/core/c/include/lwip/ip6_frag.h new file mode 100644 index 0000000..87e0e86 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ip6_frag.h @@ -0,0 +1,144 @@ +/** + * @file + * + * IPv6 fragmentation and reassembly. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ +#ifndef LWIP_HDR_IP6_FRAG_H +#define LWIP_HDR_IP6_FRAG_H + +#include "lwip/opt.h" +#include "lwip/pbuf.h" +#include "lwip/ip6_addr.h" +#include "lwip/ip6.h" +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + + +#if LWIP_IPV6 && LWIP_IPV6_REASS /* don't build if not configured for use in lwipopts.h */ + +/** The IPv6 reassembly timer interval in milliseconds. */ +#define IP6_REASS_TMR_INTERVAL 1000 + +/** IP6_FRAG_COPYHEADER==1: for platforms where sizeof(void*) > 4, "struct + * ip6_reass_helper" is too large to be stored in the IPv6 fragment header, and + * will bleed into the header before it, which may be the IPv6 header or an + * extension header. This means that for each first fragment packet, we need to + * 1) make a copy of some IPv6 header fields (src+dest) that we need later on, + * just in case we do overwrite part of the IPv6 header, and 2) make a copy of + * the header data that we overwrote, so that we can restore it before either + * completing reassembly or sending an ICMPv6 reply. The last part is true even + * if this setting is disabled, but if it is enabled, we need to save a bit + * more data (up to the size of a pointer) because we overwrite more. */ +#ifndef IPV6_FRAG_COPYHEADER +#define IPV6_FRAG_COPYHEADER 0 +#endif + +/* With IPV6_FRAG_COPYHEADER==1, a helper structure may (or, depending on the + * presence of extensions, may not) overwrite part of the IP header. Therefore, + * we copy the fields that we need from the IP header for as long as the helper + * structure may still be in place. This is easier than temporarily restoring + * those fields in the IP header each time we need to perform checks on them. */ +#if IPV6_FRAG_COPYHEADER +#define IPV6_FRAG_SRC(ipr) ((ipr)->src) +#define IPV6_FRAG_DEST(ipr) ((ipr)->dest) +#else /* IPV6_FRAG_COPYHEADER */ +#define IPV6_FRAG_SRC(ipr) ((ipr)->iphdr->src) +#define IPV6_FRAG_DEST(ipr) ((ipr)->iphdr->dest) +#endif /* IPV6_FRAG_COPYHEADER */ + +/** IPv6 reassembly helper struct. + * This is exported because memp needs to know the size. + */ +struct ip6_reassdata { + struct ip6_reassdata *next; + struct pbuf *p; + struct ip6_hdr *iphdr; /* pointer to the first (original) IPv6 header */ +#if IPV6_FRAG_COPYHEADER + ip6_addr_p_t src; /* copy of the source address in the IP header */ + ip6_addr_p_t dest; /* copy of the destination address in the IP header */ + /* This buffer (for the part of the original header that we overwrite) will + * be slightly oversized, but we cannot compute the exact size from here. */ + u8_t orig_hdr[sizeof(struct ip6_frag_hdr) + sizeof(void*)]; +#else /* IPV6_FRAG_COPYHEADER */ + /* In this case we still need the buffer, for sending ICMPv6 replies. */ + u8_t orig_hdr[sizeof(struct ip6_frag_hdr)]; +#endif /* IPV6_FRAG_COPYHEADER */ + u32_t identification; + u16_t datagram_len; + u8_t nexth; + u8_t timer; +#if LWIP_IPV6_SCOPES + u8_t src_zone; /* zone of original packet's source address */ + u8_t dest_zone; /* zone of original packet's destination address */ +#endif /* LWIP_IPV6_SCOPES */ +}; + +#define ip6_reass_init() /* Compatibility define */ +void ip6_reass_tmr(void); +struct pbuf *ip6_reass(struct pbuf *p); + +#endif /* LWIP_IPV6 && LWIP_IPV6_REASS */ + +#if LWIP_IPV6 && LWIP_IPV6_FRAG /* don't build if not configured for use in lwipopts.h */ + +#ifndef LWIP_PBUF_CUSTOM_REF_DEFINED +#define LWIP_PBUF_CUSTOM_REF_DEFINED +/** A custom pbuf that holds a reference to another pbuf, which is freed + * when this custom pbuf is freed. This is used to create a custom PBUF_REF + * that points into the original pbuf. */ +struct pbuf_custom_ref { + /** 'base class' */ + struct pbuf_custom pc; + /** pointer to the original pbuf that is referenced */ + struct pbuf *original; +}; +#endif /* LWIP_PBUF_CUSTOM_REF_DEFINED */ + +err_t ip6_frag(struct pbuf *p, struct netif *netif, const ip6_addr_t *dest); + +#endif /* LWIP_IPV6 && LWIP_IPV6_FRAG */ + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_IP6_FRAG_H */ diff --git a/Other/tun2socks/core/c/include/lwip/ip6_zone.h b/Other/tun2socks/core/c/include/lwip/ip6_zone.h new file mode 100644 index 0000000..525790e --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ip6_zone.h @@ -0,0 +1,304 @@ +/** + * @file + * + * IPv6 address scopes, zones, and scoping policy. + * + * This header provides the means to implement support for IPv6 address scopes, + * as per RFC 4007. An address scope can be either global or more constrained. + * In lwIP, we say that an address "has a scope" or "is scoped" when its scope + * is constrained, in which case the address is meaningful only in a specific + * "zone." For unicast addresses, only link-local addresses have a scope; in + * that case, the scope is the link. For multicast addresses, there are various + * scopes defined by RFC 4007 and others. For any constrained scope, a system + * must establish a (potentially one-to-many) mapping between zones and local + * interfaces. For example, a link-local address is valid on only one link (its + * zone). That link may be attached to one or more local interfaces. The + * decisions on which scopes are constrained and the mapping between zones and + * interfaces is together what we refer to as the "scoping policy" - more on + * this in a bit. + * + * In lwIP, each IPv6 address has an associated zone index. This zone index may + * be set to "no zone" (IP6_NO_ZONE, 0) or an actual zone. We say that an + * address "has a zone" or "is zoned" when its zone index is *not* set to "no + * zone." In lwIP, in principle, each address should be "properly zoned," which + * means that if the address has a zone if and only if has a scope. As such, it + * is a rule that an unscoped (e.g., global) address must never have a zone. + * Even though one could argue that there is always one zone even for global + * scopes, this rule exists for implementation simplicity. Violation of the + * rule will trigger assertions or otherwise result in undesired behavior. + * + * Backward compatibility prevents us from requiring that applications always + * provide properly zoned addresses. We do enforce the rule that the in the + * lwIP link layer (everything below netif->output_ip6() and in particular ND6) + * *all* addresses are properly zoned. Thus, on the output paths down the + * stack, various places deal with the case of addresses that lack a zone. + * Some of them are best-effort for efficiency (e.g. the PCB bind and connect + * API calls' attempts to add missing zones); ultimately the IPv6 output + * handler (@ref ip6_output_if_src) will set a zone if necessary. + * + * Aside from dealing with scoped addresses lacking a zone, a proper IPv6 + * implementation must also ensure that a packet with a scoped source and/or + * destination address does not leave its zone. This is currently implemented + * in the input and forward functions. However, for output, these checks are + * deliberately omitted in order to keep the implementation lightweight. The + * routing algorithm in @ref ip6_route will take decisions such that it will + * not cause zone violations unless the application sets bad addresses, though. + * + * In terms of scoping policy, lwIP implements the default policy from RFC 4007 + * using macros in this file. This policy considers link-local unicast + * addresses and (only) interface-local and link-local multicast addresses as + * having a scope. For all these addresses, the zone is equal to the interface. + * As shown below in this file, it is possible to implement a custom policy. + */ + +/* + * Copyright (c) 2017 The MINIX 3 Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: David van Moolenbroek + * + */ +#ifndef LWIP_HDR_IP6_ZONE_H +#define LWIP_HDR_IP6_ZONE_H + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @defgroup ip6_zones IPv6 Zones + * @ingroup ip6 + * @{ + */ + +#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +/** Identifier for "no zone". */ +#define IP6_NO_ZONE 0 + +#if LWIP_IPV6_SCOPES + +/** Zone initializer for static IPv6 address initialization, including comma. */ +#define IPADDR6_ZONE_INIT , IP6_NO_ZONE + +/** Return the zone index of the given IPv6 address; possibly "no zone". */ +#define ip6_addr_zone(ip6addr) ((ip6addr)->zone) + +/** Does the given IPv6 address have a zone set? (0/1) */ +#define ip6_addr_has_zone(ip6addr) (ip6_addr_zone(ip6addr) != IP6_NO_ZONE) + +/** Set the zone field of an IPv6 address to a particular value. */ +#define ip6_addr_set_zone(ip6addr, zone_idx) ((ip6addr)->zone = (zone_idx)) + +/** Clear the zone field of an IPv6 address, setting it to "no zone". */ +#define ip6_addr_clear_zone(ip6addr) ((ip6addr)->zone = IP6_NO_ZONE) + +/** Copy the zone field from the second IPv6 address to the first one. */ +#define ip6_addr_copy_zone(ip6addr1, ip6addr2) ((ip6addr1).zone = (ip6addr2).zone) + +/** Is the zone field of the given IPv6 address equal to the given zone index? (0/1) */ +#define ip6_addr_equals_zone(ip6addr, zone_idx) ((ip6addr)->zone == (zone_idx)) + +/** Are the zone fields of the given IPv6 addresses equal? (0/1) + * This macro must only be used on IPv6 addresses of the same scope. */ +#define ip6_addr_cmp_zone(ip6addr1, ip6addr2) ((ip6addr1)->zone == (ip6addr2)->zone) + +/** Symbolic constants for the 'type' parameters in some of the macros. + * These exist for efficiency only, allowing the macros to avoid certain tests + * when the address is known not to be of a certain type. Dead code elimination + * will do the rest. IP6_MULTICAST is supported but currently not optimized. + * @see ip6_addr_has_scope, ip6_addr_assign_zone, ip6_addr_lacks_zone. + */ +enum lwip_ipv6_scope_type +{ + /** Unknown */ + IP6_UNKNOWN = 0, + /** Unicast */ + IP6_UNICAST = 1, + /** Multicast */ + IP6_MULTICAST = 2 +}; + +/** IPV6_CUSTOM_SCOPES: together, the following three macro definitions, + * @ref ip6_addr_has_scope, @ref ip6_addr_assign_zone, and + * @ref ip6_addr_test_zone, completely define the lwIP scoping policy. + * The definitions below implement the default policy from RFC 4007 Sec. 6. + * Should an implementation desire to implement a different policy, it can + * define IPV6_CUSTOM_SCOPES to 1 and supply its own definitions for the three + * macros instead. + */ +#ifndef IPV6_CUSTOM_SCOPES +#define IPV6_CUSTOM_SCOPES 0 +#endif /* !IPV6_CUSTOM_SCOPES */ + +#if !IPV6_CUSTOM_SCOPES + +/** + * Determine whether an IPv6 address has a constrained scope, and as such is + * meaningful only if accompanied by a zone index to identify the scope's zone. + * The given address type may be used to eliminate at compile time certain + * checks that will evaluate to false at run time anyway. + * + * This default implementation follows the default model of RFC 4007, where + * only interface-local and link-local scopes are defined. + * + * Even though the unicast loopback address does have an implied link-local + * scope, in this implementation it does not have an explicitly assigned zone + * index. As such it should not be tested for in this macro. + * + * @param ip6addr the IPv6 address (const); only its address part is examined. + * @param type address type; see @ref lwip_ipv6_scope_type. + * @return 1 if the address has a constrained scope, 0 if it does not. + */ +#define ip6_addr_has_scope(ip6addr, type) \ + (ip6_addr_islinklocal(ip6addr) || (((type) != IP6_UNICAST) && \ + (ip6_addr_ismulticast_iflocal(ip6addr) || \ + ip6_addr_ismulticast_linklocal(ip6addr)))) + +/** + * Assign a zone index to an IPv6 address, based on a network interface. If the + * given address has a scope, the assigned zone index is that scope's zone of + * the given netif; otherwise, the assigned zone index is "no zone". + * + * This default implementation follows the default model of RFC 4007, where + * only interface-local and link-local scopes are defined, and the zone index + * of both of those scopes always equals the index of the network interface. + * As such, this default implementation need not distinguish between different + * constrained scopes when assigning the zone. + * + * @param ip6addr the IPv6 address; its address part is examined, and its zone + * index is assigned. + * @param type address type; see @ref lwip_ipv6_scope_type. + * @param netif the network interface (const). + */ +#define ip6_addr_assign_zone(ip6addr, type, netif) \ + (ip6_addr_set_zone((ip6addr), \ + ip6_addr_has_scope((ip6addr), (type)) ? netif_get_index(netif) : 0)) + +/** + * Test whether an IPv6 address is "zone-compatible" with a network interface. + * That is, test whether the network interface is part of the zone associated + * with the address. For efficiency, this macro is only ever called if the + * given address is either scoped or zoned, and thus, it need not test this. + * If an address is scoped but not zoned, or zoned and not scoped, it is + * considered not zone-compatible with any netif. + * + * This default implementation follows the default model of RFC 4007, where + * only interface-local and link-local scopes are defined, and the zone index + * of both of those scopes always equals the index of the network interface. + * As such, there is always only one matching netif for a specific zone index, + * but all call sites of this macro currently support multiple matching netifs + * as well (at no additional expense in the common case). + * + * @param ip6addr the IPv6 address (const). + * @param netif the network interface (const). + * @return 1 if the address is scope-compatible with the netif, 0 if not. + */ +#define ip6_addr_test_zone(ip6addr, netif) \ + (ip6_addr_equals_zone((ip6addr), netif_get_index(netif))) + +#endif /* !IPV6_CUSTOM_SCOPES */ + +/** Does the given IPv6 address have a scope, and as such should also have a + * zone to be meaningful, but does not actually have a zone? (0/1) */ +#define ip6_addr_lacks_zone(ip6addr, type) \ + (!ip6_addr_has_zone(ip6addr) && ip6_addr_has_scope((ip6addr), (type))) + +/** + * Try to select a zone for a scoped address that does not yet have a zone. + * Called from PCB bind and connect routines, for two reasons: 1) to save on + * this (relatively expensive) selection for every individual packet route + * operation and 2) to allow the application to obtain the selected zone from + * the PCB as is customary for e.g. getsockname/getpeername BSD socket calls. + * + * Ideally, callers would always supply a properly zoned address, in which case + * this function would not be needed. It exists both for compatibility with the + * BSD socket API (which accepts zoneless destination addresses) and for + * backward compatibility with pre-scoping lwIP code. + * + * It may be impossible to select a zone, e.g. if there are no netifs. In that + * case, the address's zone field will be left as is. + * + * @param dest the IPv6 address for which to select and set a zone. + * @param src source IPv6 address (const); may be equal to dest. + */ +#define ip6_addr_select_zone(dest, src) do { struct netif *selected_netif; \ + selected_netif = ip6_route((src), (dest)); \ + if (selected_netif != NULL) { \ + ip6_addr_assign_zone((dest), IP6_UNKNOWN, selected_netif); \ + } } while (0) + +/** + * @} + */ + +#else /* LWIP_IPV6_SCOPES */ + +#define IPADDR6_ZONE_INIT +#define ip6_addr_zone(ip6addr) (IP6_NO_ZONE) +#define ip6_addr_has_zone(ip6addr) (0) +#define ip6_addr_set_zone(ip6addr, zone_idx) +#define ip6_addr_clear_zone(ip6addr) +#define ip6_addr_copy_zone(ip6addr1, ip6addr2) +#define ip6_addr_equals_zone(ip6addr, zone_idx) (1) +#define ip6_addr_cmp_zone(ip6addr1, ip6addr2) (1) +#define IPV6_CUSTOM_SCOPES 0 +#define ip6_addr_has_scope(ip6addr, type) (0) +#define ip6_addr_assign_zone(ip6addr, type, netif) +#define ip6_addr_test_zone(ip6addr, netif) (1) +#define ip6_addr_lacks_zone(ip6addr, type) (0) +#define ip6_addr_select_zone(ip6addr, src) + +#endif /* LWIP_IPV6_SCOPES */ + +#if LWIP_IPV6_SCOPES && LWIP_IPV6_SCOPES_DEBUG + +/** Verify that the given IPv6 address is properly zoned. */ +#define IP6_ADDR_ZONECHECK(ip6addr) LWIP_ASSERT("IPv6 zone check failed", \ + ip6_addr_has_scope(ip6addr, IP6_UNKNOWN) == ip6_addr_has_zone(ip6addr)) + +/** Verify that the given IPv6 address is properly zoned for the given netif. */ +#define IP6_ADDR_ZONECHECK_NETIF(ip6addr, netif) LWIP_ASSERT("IPv6 netif zone check failed", \ + ip6_addr_has_scope(ip6addr, IP6_UNKNOWN) ? \ + (ip6_addr_has_zone(ip6addr) && \ + (((netif) == NULL) || ip6_addr_test_zone((ip6addr), (netif)))) : \ + !ip6_addr_has_zone(ip6addr)) + +#else /* LWIP_IPV6_SCOPES && LWIP_IPV6_SCOPES_DEBUG */ + +#define IP6_ADDR_ZONECHECK(ip6addr) +#define IP6_ADDR_ZONECHECK_NETIF(ip6addr, netif) + +#endif /* LWIP_IPV6_SCOPES && LWIP_IPV6_SCOPES_DEBUG */ + +#endif /* LWIP_IPV6 */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_IP6_ZONE_H */ diff --git a/Other/tun2socks/core/c/include/lwip/ip_addr.h b/Other/tun2socks/core/c/include/lwip/ip_addr.h new file mode 100644 index 0000000..2f97770 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/ip_addr.h @@ -0,0 +1,438 @@ +/** + * @file + * IP address API (common IPv4 and IPv6) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_IP_ADDR_H +#define LWIP_HDR_IP_ADDR_H + +#include "lwip/opt.h" +#include "lwip/def.h" + +#include "lwip/ip4_addr.h" +#include "lwip/ip6_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** @ingroup ipaddr + * IP address types for use in ip_addr_t.type member. + * @see tcp_new_ip_type(), udp_new_ip_type(), raw_new_ip_type(). + */ +enum lwip_ip_addr_type { + /** IPv4 */ + IPADDR_TYPE_V4 = 0U, + /** IPv6 */ + IPADDR_TYPE_V6 = 6U, + /** IPv4+IPv6 ("dual-stack") */ + IPADDR_TYPE_ANY = 46U +}; + +#if LWIP_IPV4 && LWIP_IPV6 +/** + * @ingroup ipaddr + * A union struct for both IP version's addresses. + * ATTENTION: watch out for its size when adding IPv6 address scope! + */ +typedef struct ip_addr { + union { + ip6_addr_t ip6; + ip4_addr_t ip4; + } u_addr; + /** @ref lwip_ip_addr_type */ + u8_t type; +} ip_addr_t; + +extern const ip_addr_t ip_addr_any_type; + +/** @ingroup ip4addr */ +#define IPADDR4_INIT(u32val) { { { { u32val, 0ul, 0ul, 0ul } IPADDR6_ZONE_INIT } }, IPADDR_TYPE_V4 } +/** @ingroup ip4addr */ +#define IPADDR4_INIT_BYTES(a,b,c,d) IPADDR4_INIT(PP_HTONL(LWIP_MAKEU32(a,b,c,d))) + +/** @ingroup ip6addr */ +#define IPADDR6_INIT(a, b, c, d) { { { { a, b, c, d } IPADDR6_ZONE_INIT } }, IPADDR_TYPE_V6 } +/** @ingroup ip6addr */ +#define IPADDR6_INIT_HOST(a, b, c, d) { { { { PP_HTONL(a), PP_HTONL(b), PP_HTONL(c), PP_HTONL(d) } IPADDR6_ZONE_INIT } }, IPADDR_TYPE_V6 } + +/** @ingroup ipaddr */ +#define IP_IS_ANY_TYPE_VAL(ipaddr) (IP_GET_TYPE(&ipaddr) == IPADDR_TYPE_ANY) +/** @ingroup ipaddr */ +#define IPADDR_ANY_TYPE_INIT { { { { 0ul, 0ul, 0ul, 0ul } IPADDR6_ZONE_INIT } }, IPADDR_TYPE_ANY } + +/** @ingroup ip4addr */ +#define IP_IS_V4_VAL(ipaddr) (IP_GET_TYPE(&ipaddr) == IPADDR_TYPE_V4) +/** @ingroup ip6addr */ +#define IP_IS_V6_VAL(ipaddr) (IP_GET_TYPE(&ipaddr) == IPADDR_TYPE_V6) +/** @ingroup ip4addr */ +#define IP_IS_V4(ipaddr) (((ipaddr) == NULL) || IP_IS_V4_VAL(*(ipaddr))) +/** @ingroup ip6addr */ +#define IP_IS_V6(ipaddr) (((ipaddr) != NULL) && IP_IS_V6_VAL(*(ipaddr))) + +#define IP_SET_TYPE_VAL(ipaddr, iptype) do { (ipaddr).type = (iptype); }while(0) +#define IP_SET_TYPE(ipaddr, iptype) do { if((ipaddr) != NULL) { IP_SET_TYPE_VAL(*(ipaddr), iptype); }}while(0) +#define IP_GET_TYPE(ipaddr) ((ipaddr)->type) + +#define IP_ADDR_RAW_SIZE(ipaddr) (IP_GET_TYPE(&ipaddr) == IPADDR_TYPE_V4 ? sizeof(ip4_addr_t) : sizeof(ip6_addr_t)) + +#define IP_ADDR_PCB_VERSION_MATCH_EXACT(pcb, ipaddr) (IP_GET_TYPE(&pcb->local_ip) == IP_GET_TYPE(ipaddr)) +#define IP_ADDR_PCB_VERSION_MATCH(pcb, ipaddr) (IP_IS_ANY_TYPE_VAL(pcb->local_ip) || IP_ADDR_PCB_VERSION_MATCH_EXACT(pcb, ipaddr)) + +/** @ingroup ip6addr + * Convert generic ip address to specific protocol version + */ +#define ip_2_ip6(ipaddr) (&((ipaddr)->u_addr.ip6)) +/** @ingroup ip4addr + * Convert generic ip address to specific protocol version + */ +#define ip_2_ip4(ipaddr) (&((ipaddr)->u_addr.ip4)) + +/** @ingroup ip4addr */ +#define IP_ADDR4(ipaddr,a,b,c,d) do { IP4_ADDR(ip_2_ip4(ipaddr),a,b,c,d); \ + IP_SET_TYPE_VAL(*(ipaddr), IPADDR_TYPE_V4); } while(0) +/** @ingroup ip6addr */ +#define IP_ADDR6(ipaddr,i0,i1,i2,i3) do { IP6_ADDR(ip_2_ip6(ipaddr),i0,i1,i2,i3); \ + IP_SET_TYPE_VAL(*(ipaddr), IPADDR_TYPE_V6); } while(0) +/** @ingroup ip6addr */ +#define IP_ADDR6_HOST(ipaddr,i0,i1,i2,i3) IP_ADDR6(ipaddr,PP_HTONL(i0),PP_HTONL(i1),PP_HTONL(i2),PP_HTONL(i3)) + +#define ip_clear_no4(ipaddr) do { ip_2_ip6(ipaddr)->addr[1] = \ + ip_2_ip6(ipaddr)->addr[2] = \ + ip_2_ip6(ipaddr)->addr[3] = 0; \ + ip6_addr_clear_zone(ip_2_ip6(ipaddr)); }while(0) + +/** @ingroup ipaddr */ +#define ip_addr_copy(dest, src) do{ IP_SET_TYPE_VAL(dest, IP_GET_TYPE(&src)); if(IP_IS_V6_VAL(src)){ \ + ip6_addr_copy(*ip_2_ip6(&(dest)), *ip_2_ip6(&(src))); }else{ \ + ip4_addr_copy(*ip_2_ip4(&(dest)), *ip_2_ip4(&(src))); ip_clear_no4(&dest); }}while(0) +/** @ingroup ip6addr */ +#define ip_addr_copy_from_ip6(dest, src) do{ \ + ip6_addr_copy(*ip_2_ip6(&(dest)), src); IP_SET_TYPE_VAL(dest, IPADDR_TYPE_V6); }while(0) +/** @ingroup ip6addr */ +#define ip_addr_copy_from_ip6_packed(dest, src) do{ \ + ip6_addr_copy_from_packed(*ip_2_ip6(&(dest)), src); IP_SET_TYPE_VAL(dest, IPADDR_TYPE_V6); }while(0) +/** @ingroup ip4addr */ +#define ip_addr_copy_from_ip4(dest, src) do{ \ + ip4_addr_copy(*ip_2_ip4(&(dest)), src); IP_SET_TYPE_VAL(dest, IPADDR_TYPE_V4); ip_clear_no4(&dest); }while(0) +/** @ingroup ip4addr */ +#define ip_addr_set_ip4_u32(ipaddr, val) do{if(ipaddr){ip4_addr_set_u32(ip_2_ip4(ipaddr), val); \ + IP_SET_TYPE(ipaddr, IPADDR_TYPE_V4); ip_clear_no4(ipaddr); }}while(0) +/** @ingroup ip4addr */ +#define ip_addr_set_ip4_u32_val(ipaddr, val) do{ ip4_addr_set_u32(ip_2_ip4(&(ipaddr)), val); \ + IP_SET_TYPE_VAL(ipaddr, IPADDR_TYPE_V4); ip_clear_no4(&ipaddr); }while(0) +/** @ingroup ip4addr */ +#define ip_addr_get_ip4_u32(ipaddr) (((ipaddr) && IP_IS_V4(ipaddr)) ? \ + ip4_addr_get_u32(ip_2_ip4(ipaddr)) : 0) +/** @ingroup ipaddr */ +#define ip_addr_set(dest, src) do{ IP_SET_TYPE(dest, IP_GET_TYPE(src)); if(IP_IS_V6(src)){ \ + ip6_addr_set(ip_2_ip6(dest), ip_2_ip6(src)); }else{ \ + ip4_addr_set(ip_2_ip4(dest), ip_2_ip4(src)); ip_clear_no4(dest); }}while(0) +/** @ingroup ipaddr */ +#define ip_addr_set_ipaddr(dest, src) ip_addr_set(dest, src) +/** @ingroup ipaddr */ +#define ip_addr_set_zero(ipaddr) do{ \ + ip6_addr_set_zero(ip_2_ip6(ipaddr)); IP_SET_TYPE(ipaddr, 0); }while(0) +/** @ingroup ip5addr */ +#define ip_addr_set_zero_ip4(ipaddr) do{ \ + ip6_addr_set_zero(ip_2_ip6(ipaddr)); IP_SET_TYPE(ipaddr, IPADDR_TYPE_V4); }while(0) +/** @ingroup ip6addr */ +#define ip_addr_set_zero_ip6(ipaddr) do{ \ + ip6_addr_set_zero(ip_2_ip6(ipaddr)); IP_SET_TYPE(ipaddr, IPADDR_TYPE_V6); }while(0) +/** @ingroup ipaddr */ +#define ip_addr_set_any(is_ipv6, ipaddr) do{if(is_ipv6){ \ + ip6_addr_set_any(ip_2_ip6(ipaddr)); IP_SET_TYPE(ipaddr, IPADDR_TYPE_V6); }else{ \ + ip4_addr_set_any(ip_2_ip4(ipaddr)); IP_SET_TYPE(ipaddr, IPADDR_TYPE_V4); ip_clear_no4(ipaddr); }}while(0) +/** @ingroup ipaddr */ +#define ip_addr_set_any_val(is_ipv6, ipaddr) do{if(is_ipv6){ \ + ip6_addr_set_any(ip_2_ip6(&(ipaddr))); IP_SET_TYPE_VAL(ipaddr, IPADDR_TYPE_V6); }else{ \ + ip4_addr_set_any(ip_2_ip4(&(ipaddr))); IP_SET_TYPE_VAL(ipaddr, IPADDR_TYPE_V4); ip_clear_no4(&ipaddr); }}while(0) +/** @ingroup ipaddr */ +#define ip_addr_set_loopback(is_ipv6, ipaddr) do{if(is_ipv6){ \ + ip6_addr_set_loopback(ip_2_ip6(ipaddr)); IP_SET_TYPE(ipaddr, IPADDR_TYPE_V6); }else{ \ + ip4_addr_set_loopback(ip_2_ip4(ipaddr)); IP_SET_TYPE(ipaddr, IPADDR_TYPE_V4); ip_clear_no4(ipaddr); }}while(0) +/** @ingroup ipaddr */ +#define ip_addr_set_loopback_val(is_ipv6, ipaddr) do{if(is_ipv6){ \ + ip6_addr_set_loopback(ip_2_ip6(&(ipaddr))); IP_SET_TYPE_VAL(ipaddr, IPADDR_TYPE_V6); }else{ \ + ip4_addr_set_loopback(ip_2_ip4(&(ipaddr))); IP_SET_TYPE_VAL(ipaddr, IPADDR_TYPE_V4); ip_clear_no4(&ipaddr); }}while(0) +/** @ingroup ipaddr */ +#define ip_addr_set_hton(dest, src) do{if(IP_IS_V6(src)){ \ + ip6_addr_set_hton(ip_2_ip6(dest), ip_2_ip6(src)); IP_SET_TYPE(dest, IPADDR_TYPE_V6); }else{ \ + ip4_addr_set_hton(ip_2_ip4(dest), ip_2_ip4(src)); IP_SET_TYPE(dest, IPADDR_TYPE_V4); ip_clear_no4(ipaddr); }}while(0) +/** @ingroup ipaddr */ +#define ip_addr_get_network(target, host, netmask) do{if(IP_IS_V6(host)){ \ + ip4_addr_set_zero(ip_2_ip4(target)); IP_SET_TYPE(target, IPADDR_TYPE_V6); } else { \ + ip4_addr_get_network(ip_2_ip4(target), ip_2_ip4(host), ip_2_ip4(netmask)); IP_SET_TYPE(target, IPADDR_TYPE_V4); }}while(0) +/** @ingroup ipaddr */ +#define ip_addr_netcmp(addr1, addr2, mask) ((IP_IS_V6(addr1) && IP_IS_V6(addr2)) ? \ + 0 : \ + ip4_addr_netcmp(ip_2_ip4(addr1), ip_2_ip4(addr2), mask)) +/** @ingroup ipaddr */ +#define ip_addr_cmp(addr1, addr2) ((IP_GET_TYPE(addr1) != IP_GET_TYPE(addr2)) ? 0 : (IP_IS_V6_VAL(*(addr1)) ? \ + ip6_addr_cmp(ip_2_ip6(addr1), ip_2_ip6(addr2)) : \ + ip4_addr_cmp(ip_2_ip4(addr1), ip_2_ip4(addr2)))) +/** @ingroup ipaddr */ +#define ip_addr_cmp_zoneless(addr1, addr2) ((IP_GET_TYPE(addr1) != IP_GET_TYPE(addr2)) ? 0 : (IP_IS_V6_VAL(*(addr1)) ? \ + ip6_addr_cmp_zoneless(ip_2_ip6(addr1), ip_2_ip6(addr2)) : \ + ip4_addr_cmp(ip_2_ip4(addr1), ip_2_ip4(addr2)))) +/** @ingroup ipaddr */ +#define ip_addr_isany(ipaddr) (((ipaddr) == NULL) ? 1 : ((IP_IS_V6(ipaddr)) ? \ + ip6_addr_isany(ip_2_ip6(ipaddr)) : \ + ip4_addr_isany(ip_2_ip4(ipaddr)))) +/** @ingroup ipaddr */ +#define ip_addr_isany_val(ipaddr) ((IP_IS_V6_VAL(ipaddr)) ? \ + ip6_addr_isany_val(*ip_2_ip6(&(ipaddr))) : \ + ip4_addr_isany_val(*ip_2_ip4(&(ipaddr)))) +/** @ingroup ipaddr */ +#define ip_addr_isbroadcast(ipaddr, netif) ((IP_IS_V6(ipaddr)) ? \ + 0 : \ + ip4_addr_isbroadcast(ip_2_ip4(ipaddr), netif)) +/** @ingroup ipaddr */ +#define ip_addr_ismulticast(ipaddr) ((IP_IS_V6(ipaddr)) ? \ + ip6_addr_ismulticast(ip_2_ip6(ipaddr)) : \ + ip4_addr_ismulticast(ip_2_ip4(ipaddr))) +/** @ingroup ipaddr */ +#define ip_addr_isloopback(ipaddr) ((IP_IS_V6(ipaddr)) ? \ + ip6_addr_isloopback(ip_2_ip6(ipaddr)) : \ + ip4_addr_isloopback(ip_2_ip4(ipaddr))) +/** @ingroup ipaddr */ +#define ip_addr_islinklocal(ipaddr) ((IP_IS_V6(ipaddr)) ? \ + ip6_addr_islinklocal(ip_2_ip6(ipaddr)) : \ + ip4_addr_islinklocal(ip_2_ip4(ipaddr))) +#define ip_addr_debug_print(debug, ipaddr) do { if(IP_IS_V6(ipaddr)) { \ + ip6_addr_debug_print(debug, ip_2_ip6(ipaddr)); } else { \ + ip4_addr_debug_print(debug, ip_2_ip4(ipaddr)); }}while(0) +#define ip_addr_debug_print_val(debug, ipaddr) do { if(IP_IS_V6_VAL(ipaddr)) { \ + ip6_addr_debug_print_val(debug, *ip_2_ip6(&(ipaddr))); } else { \ + ip4_addr_debug_print_val(debug, *ip_2_ip4(&(ipaddr))); }}while(0) +char *ipaddr_ntoa(const ip_addr_t *addr); +char *ipaddr_ntoa_r(const ip_addr_t *addr, char *buf, int buflen); +int ipaddr_aton(const char *cp, ip_addr_t *addr); + +/** @ingroup ipaddr */ +#define IPADDR_STRLEN_MAX IP6ADDR_STRLEN_MAX + +/** @ingroup ipaddr */ +#define ip4_2_ipv4_mapped_ipv6(ip6addr, ip4addr) do { \ + (ip6addr)->addr[3] = (ip4addr)->addr; \ + (ip6addr)->addr[2] = PP_HTONL(0x0000FFFFUL); \ + (ip6addr)->addr[1] = 0; \ + (ip6addr)->addr[0] = 0; \ + ip6_addr_clear_zone(ip6addr); } while(0); + +/** @ingroup ipaddr */ +#define unmap_ipv4_mapped_ipv6(ip4addr, ip6addr) \ + (ip4addr)->addr = (ip6addr)->addr[3]; + +#define IP46_ADDR_ANY(type) (((type) == IPADDR_TYPE_V6)? IP6_ADDR_ANY : IP4_ADDR_ANY) + +#else /* LWIP_IPV4 && LWIP_IPV6 */ + +#define IP_ADDR_PCB_VERSION_MATCH(addr, pcb) 1 +#define IP_ADDR_PCB_VERSION_MATCH_EXACT(pcb, ipaddr) 1 + +#define ip_addr_set_any_val(is_ipv6, ipaddr) ip_addr_set_any(is_ipv6, &(ipaddr)) +#define ip_addr_set_loopback_val(is_ipv6, ipaddr) ip_addr_set_loopback(is_ipv6, &(ipaddr)) + +#if LWIP_IPV4 + +typedef ip4_addr_t ip_addr_t; +#define IPADDR4_INIT(u32val) { u32val } +#define IPADDR4_INIT_BYTES(a,b,c,d) IPADDR4_INIT(PP_HTONL(LWIP_MAKEU32(a,b,c,d))) +#define IP_IS_V4_VAL(ipaddr) 1 +#define IP_IS_V6_VAL(ipaddr) 0 +#define IP_IS_V4(ipaddr) 1 +#define IP_IS_V6(ipaddr) 0 +#define IP_IS_ANY_TYPE_VAL(ipaddr) 0 +#define IP_SET_TYPE_VAL(ipaddr, iptype) +#define IP_SET_TYPE(ipaddr, iptype) +#define IP_GET_TYPE(ipaddr) IPADDR_TYPE_V4 +#define IP_ADDR_RAW_SIZE(ipaddr) sizeof(ip4_addr_t) +#define ip_2_ip4(ipaddr) (ipaddr) +#define IP_ADDR4(ipaddr,a,b,c,d) IP4_ADDR(ipaddr,a,b,c,d) + +#define ip_addr_copy(dest, src) ip4_addr_copy(dest, src) +#define ip_addr_copy_from_ip4(dest, src) ip4_addr_copy(dest, src) +#define ip_addr_set_ip4_u32(ipaddr, val) ip4_addr_set_u32(ip_2_ip4(ipaddr), val) +#define ip_addr_set_ip4_u32_val(ipaddr, val) ip_addr_set_ip4_u32(&(ipaddr), val) +#define ip_addr_get_ip4_u32(ipaddr) ip4_addr_get_u32(ip_2_ip4(ipaddr)) +#define ip_addr_set(dest, src) ip4_addr_set(dest, src) +#define ip_addr_set_ipaddr(dest, src) ip4_addr_set(dest, src) +#define ip_addr_set_zero(ipaddr) ip4_addr_set_zero(ipaddr) +#define ip_addr_set_zero_ip4(ipaddr) ip4_addr_set_zero(ipaddr) +#define ip_addr_set_any(is_ipv6, ipaddr) ip4_addr_set_any(ipaddr) +#define ip_addr_set_loopback(is_ipv6, ipaddr) ip4_addr_set_loopback(ipaddr) +#define ip_addr_set_hton(dest, src) ip4_addr_set_hton(dest, src) +#define ip_addr_get_network(target, host, mask) ip4_addr_get_network(target, host, mask) +#define ip_addr_netcmp(addr1, addr2, mask) ip4_addr_netcmp(addr1, addr2, mask) +#define ip_addr_cmp(addr1, addr2) ip4_addr_cmp(addr1, addr2) +#define ip_addr_isany(ipaddr) ip4_addr_isany(ipaddr) +#define ip_addr_isany_val(ipaddr) ip4_addr_isany_val(ipaddr) +#define ip_addr_isloopback(ipaddr) ip4_addr_isloopback(ipaddr) +#define ip_addr_islinklocal(ipaddr) ip4_addr_islinklocal(ipaddr) +#define ip_addr_isbroadcast(addr, netif) ip4_addr_isbroadcast(addr, netif) +#define ip_addr_ismulticast(ipaddr) ip4_addr_ismulticast(ipaddr) +#define ip_addr_debug_print(debug, ipaddr) ip4_addr_debug_print(debug, ipaddr) +#define ip_addr_debug_print_val(debug, ipaddr) ip4_addr_debug_print_val(debug, ipaddr) +#define ipaddr_ntoa(ipaddr) ip4addr_ntoa(ipaddr) +#define ipaddr_ntoa_r(ipaddr, buf, buflen) ip4addr_ntoa_r(ipaddr, buf, buflen) +#define ipaddr_aton(cp, addr) ip4addr_aton(cp, addr) + +#define IPADDR_STRLEN_MAX IP4ADDR_STRLEN_MAX + +#define IP46_ADDR_ANY(type) (IP4_ADDR_ANY) + +#else /* LWIP_IPV4 */ + +typedef ip6_addr_t ip_addr_t; +#define IPADDR6_INIT(a, b, c, d) { { a, b, c, d } IPADDR6_ZONE_INIT } +#define IPADDR6_INIT_HOST(a, b, c, d) { { PP_HTONL(a), PP_HTONL(b), PP_HTONL(c), PP_HTONL(d) } IPADDR6_ZONE_INIT } +#define IP_IS_V4_VAL(ipaddr) 0 +#define IP_IS_V6_VAL(ipaddr) 1 +#define IP_IS_V4(ipaddr) 0 +#define IP_IS_V6(ipaddr) 1 +#define IP_IS_ANY_TYPE_VAL(ipaddr) 0 +#define IP_SET_TYPE_VAL(ipaddr, iptype) +#define IP_SET_TYPE(ipaddr, iptype) +#define IP_GET_TYPE(ipaddr) IPADDR_TYPE_V6 +#define IP_ADDR_RAW_SIZE(ipaddr) sizeof(ip6_addr_t) +#define ip_2_ip6(ipaddr) (ipaddr) +#define IP_ADDR6(ipaddr,i0,i1,i2,i3) IP6_ADDR(ipaddr,i0,i1,i2,i3) +#define IP_ADDR6_HOST(ipaddr,i0,i1,i2,i3) IP_ADDR6(ipaddr,PP_HTONL(i0),PP_HTONL(i1),PP_HTONL(i2),PP_HTONL(i3)) + +#define ip_addr_copy(dest, src) ip6_addr_copy(dest, src) +#define ip_addr_copy_from_ip6(dest, src) ip6_addr_copy(dest, src) +#define ip_addr_copy_from_ip6_packed(dest, src) ip6_addr_copy_from_packed(dest, src) +#define ip_addr_set(dest, src) ip6_addr_set(dest, src) +#define ip_addr_set_ipaddr(dest, src) ip6_addr_set(dest, src) +#define ip_addr_set_zero(ipaddr) ip6_addr_set_zero(ipaddr) +#define ip_addr_set_zero_ip6(ipaddr) ip6_addr_set_zero(ipaddr) +#define ip_addr_set_any(is_ipv6, ipaddr) ip6_addr_set_any(ipaddr) +#define ip_addr_set_loopback(is_ipv6, ipaddr) ip6_addr_set_loopback(ipaddr) +#define ip_addr_set_hton(dest, src) ip6_addr_set_hton(dest, src) +#define ip_addr_get_network(target, host, mask) ip6_addr_set_zero(target) +#define ip_addr_netcmp(addr1, addr2, mask) 0 +#define ip_addr_cmp(addr1, addr2) ip6_addr_cmp(addr1, addr2) +#define ip_addr_cmp_zoneless(addr1, addr2) ip6_addr_cmp_zoneless(addr1, addr2) +#define ip_addr_isany(ipaddr) ip6_addr_isany(ipaddr) +#define ip_addr_isany_val(ipaddr) ip6_addr_isany_val(ipaddr) +#define ip_addr_isloopback(ipaddr) ip6_addr_isloopback(ipaddr) +#define ip_addr_islinklocal(ipaddr) ip6_addr_islinklocal(ipaddr) +#define ip_addr_isbroadcast(addr, netif) 0 +#define ip_addr_ismulticast(ipaddr) ip6_addr_ismulticast(ipaddr) +#define ip_addr_debug_print(debug, ipaddr) ip6_addr_debug_print(debug, ipaddr) +#define ip_addr_debug_print_val(debug, ipaddr) ip6_addr_debug_print_val(debug, ipaddr) +#define ipaddr_ntoa(ipaddr) ip6addr_ntoa(ipaddr) +#define ipaddr_ntoa_r(ipaddr, buf, buflen) ip6addr_ntoa_r(ipaddr, buf, buflen) +#define ipaddr_aton(cp, addr) ip6addr_aton(cp, addr) + +#define IPADDR_STRLEN_MAX IP6ADDR_STRLEN_MAX + +#define IP46_ADDR_ANY(type) (IP6_ADDR_ANY) + +#endif /* LWIP_IPV4 */ +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + +#if LWIP_IPV4 + +extern const ip_addr_t ip_addr_any; +extern const ip_addr_t ip_addr_broadcast; + +/** + * @ingroup ip4addr + * Can be used as a fixed/const ip_addr_t + * for the IP wildcard. + * Defined to @ref IP4_ADDR_ANY when IPv4 is enabled. + * Defined to @ref IP6_ADDR_ANY in IPv6 only systems. + * Use this if you can handle IPv4 _AND_ IPv6 addresses. + * Use @ref IP4_ADDR_ANY or @ref IP6_ADDR_ANY when the IP + * type matters. + */ +#define IP_ADDR_ANY IP4_ADDR_ANY +/** + * @ingroup ip4addr + * Can be used as a fixed/const ip_addr_t + * for the IPv4 wildcard and the broadcast address + */ +#define IP4_ADDR_ANY (&ip_addr_any) +/** + * @ingroup ip4addr + * Can be used as a fixed/const ip4_addr_t + * for the wildcard and the broadcast address + */ +#define IP4_ADDR_ANY4 (ip_2_ip4(&ip_addr_any)) + +/** @ingroup ip4addr */ +#define IP_ADDR_BROADCAST (&ip_addr_broadcast) +/** @ingroup ip4addr */ +#define IP4_ADDR_BROADCAST (ip_2_ip4(&ip_addr_broadcast)) + +#endif /* LWIP_IPV4*/ + +#if LWIP_IPV6 + +extern const ip_addr_t ip6_addr_any; + +/** + * @ingroup ip6addr + * IP6_ADDR_ANY can be used as a fixed ip_addr_t + * for the IPv6 wildcard address + */ +#define IP6_ADDR_ANY (&ip6_addr_any) +/** + * @ingroup ip6addr + * IP6_ADDR_ANY6 can be used as a fixed ip6_addr_t + * for the IPv6 wildcard address + */ +#define IP6_ADDR_ANY6 (ip_2_ip6(&ip6_addr_any)) + +#if !LWIP_IPV4 +/** IPv6-only configurations */ +#define IP_ADDR_ANY IP6_ADDR_ANY +#endif /* !LWIP_IPV4 */ + +#endif + +#if LWIP_IPV4 && LWIP_IPV6 +/** @ingroup ipaddr */ +#define IP_ANY_TYPE (&ip_addr_any_type) +#else +#define IP_ANY_TYPE IP_ADDR_ANY +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_IP_ADDR_H */ diff --git a/Other/tun2socks/core/c/include/lwip/mem.h b/Other/tun2socks/core/c/include/lwip/mem.h new file mode 100644 index 0000000..ff208d2 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/mem.h @@ -0,0 +1,82 @@ +/** + * @file + * Heap API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_MEM_H +#define LWIP_HDR_MEM_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if MEM_LIBC_MALLOC + +#include "lwip/arch.h" + +typedef size_t mem_size_t; +#define MEM_SIZE_F SZT_F + +#elif MEM_USE_POOLS + +typedef u16_t mem_size_t; +#define MEM_SIZE_F U16_F + +#else + +/* MEM_SIZE would have to be aligned, but using 64000 here instead of + * 65535 leaves some room for alignment... + */ +#if MEM_SIZE > 64000L +typedef u32_t mem_size_t; +#define MEM_SIZE_F U32_F +#else +typedef u16_t mem_size_t; +#define MEM_SIZE_F U16_F +#endif /* MEM_SIZE > 64000 */ +#endif + +void mem_init(void); +void *mem_trim(void *mem, mem_size_t size); +void *mem_malloc(mem_size_t size); +void *mem_calloc(mem_size_t count, mem_size_t size); +void mem_free(void *mem); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_MEM_H */ diff --git a/Other/tun2socks/core/c/include/lwip/memp.h b/Other/tun2socks/core/c/include/lwip/memp.h new file mode 100644 index 0000000..1630b26 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/memp.h @@ -0,0 +1,155 @@ +/** + * @file + * Memory pool API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#ifndef LWIP_HDR_MEMP_H +#define LWIP_HDR_MEMP_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* run once with empty definition to handle all custom includes in lwippools.h */ +#define LWIP_MEMPOOL(name,num,size,desc) +#include "lwip/priv/memp_std.h" + +/** Create the list of all memory pools managed by memp. MEMP_MAX represents a NULL pool at the end */ +typedef enum { +#define LWIP_MEMPOOL(name,num,size,desc) MEMP_##name, +#include "lwip/priv/memp_std.h" + MEMP_MAX +} memp_t; + +#include "lwip/priv/memp_priv.h" +#include "lwip/stats.h" + +extern const struct memp_desc* const memp_pools[MEMP_MAX]; + +/** + * @ingroup mempool + * Declare prototype for private memory pool if it is used in multiple files + */ +#define LWIP_MEMPOOL_PROTOTYPE(name) extern const struct memp_desc memp_ ## name + +#if MEMP_MEM_MALLOC + +#define LWIP_MEMPOOL_DECLARE(name,num,size,desc) \ + LWIP_MEMPOOL_DECLARE_STATS_INSTANCE(memp_stats_ ## name) \ + const struct memp_desc memp_ ## name = { \ + DECLARE_LWIP_MEMPOOL_DESC(desc) \ + LWIP_MEMPOOL_DECLARE_STATS_REFERENCE(memp_stats_ ## name) \ + LWIP_MEM_ALIGN_SIZE(size) \ + }; + +#else /* MEMP_MEM_MALLOC */ + +/** + * @ingroup mempool + * Declare a private memory pool + * Private mempools example: + * .h: only when pool is used in multiple .c files: LWIP_MEMPOOL_PROTOTYPE(my_private_pool); + * .c: + * - in global variables section: LWIP_MEMPOOL_DECLARE(my_private_pool, 10, sizeof(foo), "Some description") + * - call ONCE before using pool (e.g. in some init() function): LWIP_MEMPOOL_INIT(my_private_pool); + * - allocate: void* my_new_mem = LWIP_MEMPOOL_ALLOC(my_private_pool); + * - free: LWIP_MEMPOOL_FREE(my_private_pool, my_new_mem); + * + * To relocate a pool, declare it as extern in cc.h. Example for GCC: + * extern u8_t \_\_attribute\_\_((section(".onchip_mem"))) memp_memory_my_private_pool_base[]; + */ +#define LWIP_MEMPOOL_DECLARE(name,num,size,desc) \ + LWIP_DECLARE_MEMORY_ALIGNED(memp_memory_ ## name ## _base, ((num) * (MEMP_SIZE + MEMP_ALIGN_SIZE(size)))); \ + \ + LWIP_MEMPOOL_DECLARE_STATS_INSTANCE(memp_stats_ ## name) \ + \ + static struct memp *memp_tab_ ## name; \ + \ + const struct memp_desc memp_ ## name = { \ + DECLARE_LWIP_MEMPOOL_DESC(desc) \ + LWIP_MEMPOOL_DECLARE_STATS_REFERENCE(memp_stats_ ## name) \ + LWIP_MEM_ALIGN_SIZE(size), \ + (num), \ + memp_memory_ ## name ## _base, \ + &memp_tab_ ## name \ + }; + +#endif /* MEMP_MEM_MALLOC */ + +/** + * @ingroup mempool + * Initialize a private memory pool + */ +#define LWIP_MEMPOOL_INIT(name) memp_init_pool(&memp_ ## name) +/** + * @ingroup mempool + * Allocate from a private memory pool + */ +#define LWIP_MEMPOOL_ALLOC(name) memp_malloc_pool(&memp_ ## name) +/** + * @ingroup mempool + * Free element from a private memory pool + */ +#define LWIP_MEMPOOL_FREE(name, x) memp_free_pool(&memp_ ## name, (x)) + +#if MEM_USE_POOLS +/** This structure is used to save the pool one element came from. + * This has to be defined here as it is required for pool size calculation. */ +struct memp_malloc_helper +{ + memp_t poolnr; +#if MEMP_OVERFLOW_CHECK || (LWIP_STATS && MEM_STATS) + u16_t size; +#endif /* MEMP_OVERFLOW_CHECK || (LWIP_STATS && MEM_STATS) */ +}; +#endif /* MEM_USE_POOLS */ + +void memp_init(void); + +#if MEMP_OVERFLOW_CHECK +void *memp_malloc_fn(memp_t type, const char* file, const int line); +#define memp_malloc(t) memp_malloc_fn((t), __FILE__, __LINE__) +#else +void *memp_malloc(memp_t type); +#endif +void memp_free(memp_t type, void *mem); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_MEMP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/mld6.h b/Other/tun2socks/core/c/include/lwip/mld6.h new file mode 100644 index 0000000..7fa0797 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/mld6.h @@ -0,0 +1,99 @@ +/** + * @file + * + * Multicast listener discovery for IPv6. Aims to be compliant with RFC 2710. + * No support for MLDv2. + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#ifndef LWIP_HDR_MLD6_H +#define LWIP_HDR_MLD6_H + +#include "lwip/opt.h" + +#if LWIP_IPV6_MLD && LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/pbuf.h" +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** MLD group */ +struct mld_group { + /** next link */ + struct mld_group *next; + /** multicast address */ + ip6_addr_t group_address; + /** signifies we were the last person to report */ + u8_t last_reporter_flag; + /** current state of the group */ + u8_t group_state; + /** timer for reporting */ + u16_t timer; + /** counter of simultaneous uses */ + u8_t use; +}; + +#define MLD6_TMR_INTERVAL 100 /* Milliseconds */ + +err_t mld6_stop(struct netif *netif); +void mld6_report_groups(struct netif *netif); +void mld6_tmr(void); +struct mld_group *mld6_lookfor_group(struct netif *ifp, const ip6_addr_t *addr); +void mld6_input(struct pbuf *p, struct netif *inp); +err_t mld6_joingroup(const ip6_addr_t *srcaddr, const ip6_addr_t *groupaddr); +err_t mld6_joingroup_netif(struct netif *netif, const ip6_addr_t *groupaddr); +err_t mld6_leavegroup(const ip6_addr_t *srcaddr, const ip6_addr_t *groupaddr); +err_t mld6_leavegroup_netif(struct netif *netif, const ip6_addr_t *groupaddr); + +/** @ingroup mld6 + * Get list head of MLD6 groups for netif. + * Note: The allnodes group IP is NOT in the list, since it must always + * be received for correct IPv6 operation. + * @see @ref netif_set_mld_mac_filter() + */ +#define netif_mld6_data(netif) ((struct mld_group *)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_MLD6)) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6_MLD && LWIP_IPV6 */ + +#endif /* LWIP_HDR_MLD6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/nd6.h b/Other/tun2socks/core/c/include/lwip/nd6.h new file mode 100644 index 0000000..c30e624 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/nd6.h @@ -0,0 +1,90 @@ +/** + * @file + * + * Neighbor discovery and stateless address autoconfiguration for IPv6. + * Aims to be compliant with RFC 4861 (Neighbor discovery) and RFC 4862 + * (Address autoconfiguration). + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#ifndef LWIP_HDR_ND6_H +#define LWIP_HDR_ND6_H + +#include "lwip/opt.h" + +#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/ip6_addr.h" +#include "lwip/err.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** 1 second period */ +#define ND6_TMR_INTERVAL 1000 + +/** Router solicitations are sent in 4 second intervals (see RFC 4861, ch. 6.3.7) */ +#ifndef ND6_RTR_SOLICITATION_INTERVAL +#define ND6_RTR_SOLICITATION_INTERVAL 4000 +#endif + +struct pbuf; +struct netif; + +void nd6_tmr(void); +void nd6_input(struct pbuf *p, struct netif *inp); +void nd6_clear_destination_cache(void); +struct netif *nd6_find_route(const ip6_addr_t *ip6addr); +err_t nd6_get_next_hop_addr_or_queue(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr, const u8_t **hwaddrp); +u16_t nd6_get_destination_mtu(const ip6_addr_t *ip6addr, struct netif *netif); +#if LWIP_ND6_TCP_REACHABILITY_HINTS +void nd6_reachability_hint(const ip6_addr_t *ip6addr); +#endif /* LWIP_ND6_TCP_REACHABILITY_HINTS */ +void nd6_cleanup_netif(struct netif *netif); +#if LWIP_IPV6_MLD +void nd6_adjust_mld_membership(struct netif *netif, s8_t addr_idx, u8_t new_state); +#endif /* LWIP_IPV6_MLD */ +void nd6_restart_netif(struct netif *netif); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6 */ + +#endif /* LWIP_HDR_ND6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/netbuf.h b/Other/tun2socks/core/c/include/lwip/netbuf.h new file mode 100644 index 0000000..42a911b --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/netbuf.h @@ -0,0 +1,116 @@ +/** + * @file + * netbuf API (for netconn API) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_NETBUF_H +#define LWIP_HDR_NETBUF_H + +#include "lwip/opt.h" + +#if LWIP_NETCONN || LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ +/* Note: Netconn API is always available when sockets are enabled - + * sockets are implemented on top of them */ + +#include "lwip/pbuf.h" +#include "lwip/ip_addr.h" +#include "lwip/ip6_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** This netbuf has dest-addr/port set */ +#define NETBUF_FLAG_DESTADDR 0x01 +/** This netbuf includes a checksum */ +#define NETBUF_FLAG_CHKSUM 0x02 + +/** "Network buffer" - contains data and addressing info */ +struct netbuf { + struct pbuf *p, *ptr; + ip_addr_t addr; + u16_t port; +#if LWIP_NETBUF_RECVINFO || LWIP_CHECKSUM_ON_COPY + u8_t flags; + u16_t toport_chksum; +#if LWIP_NETBUF_RECVINFO + ip_addr_t toaddr; +#endif /* LWIP_NETBUF_RECVINFO */ +#endif /* LWIP_NETBUF_RECVINFO || LWIP_CHECKSUM_ON_COPY */ +}; + +/* Network buffer functions: */ +struct netbuf * netbuf_new (void); +void netbuf_delete (struct netbuf *buf); +void * netbuf_alloc (struct netbuf *buf, u16_t size); +void netbuf_free (struct netbuf *buf); +err_t netbuf_ref (struct netbuf *buf, + const void *dataptr, u16_t size); +void netbuf_chain (struct netbuf *head, struct netbuf *tail); + +err_t netbuf_data (struct netbuf *buf, + void **dataptr, u16_t *len); +s8_t netbuf_next (struct netbuf *buf); +void netbuf_first (struct netbuf *buf); + + +#define netbuf_copy_partial(buf, dataptr, len, offset) \ + pbuf_copy_partial((buf)->p, (dataptr), (len), (offset)) +#define netbuf_copy(buf,dataptr,len) netbuf_copy_partial(buf, dataptr, len, 0) +#define netbuf_take(buf, dataptr, len) pbuf_take((buf)->p, dataptr, len) +#define netbuf_len(buf) ((buf)->p->tot_len) +#define netbuf_fromaddr(buf) (&((buf)->addr)) +#define netbuf_set_fromaddr(buf, fromaddr) ip_addr_set(&((buf)->addr), fromaddr) +#define netbuf_fromport(buf) ((buf)->port) +#if LWIP_NETBUF_RECVINFO +#define netbuf_destaddr(buf) (&((buf)->toaddr)) +#define netbuf_set_destaddr(buf, destaddr) ip_addr_set(&((buf)->toaddr), destaddr) +#if LWIP_CHECKSUM_ON_COPY +#define netbuf_destport(buf) (((buf)->flags & NETBUF_FLAG_DESTADDR) ? (buf)->toport_chksum : 0) +#else /* LWIP_CHECKSUM_ON_COPY */ +#define netbuf_destport(buf) ((buf)->toport_chksum) +#endif /* LWIP_CHECKSUM_ON_COPY */ +#endif /* LWIP_NETBUF_RECVINFO */ +#if LWIP_CHECKSUM_ON_COPY +#define netbuf_set_chksum(buf, chksum) do { (buf)->flags = NETBUF_FLAG_CHKSUM; \ + (buf)->toport_chksum = chksum; } while(0) +#endif /* LWIP_CHECKSUM_ON_COPY */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_NETCONN || LWIP_SOCKET */ + +#endif /* LWIP_HDR_NETBUF_H */ diff --git a/Other/tun2socks/core/c/include/lwip/netdb.h b/Other/tun2socks/core/c/include/lwip/netdb.h new file mode 100644 index 0000000..d3d15df --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/netdb.h @@ -0,0 +1,150 @@ +/** + * @file + * NETDB API (sockets) + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_NETDB_H +#define LWIP_HDR_NETDB_H + +#include "lwip/opt.h" + +#if LWIP_DNS && LWIP_SOCKET + +#include "lwip/arch.h" +#include "lwip/inet.h" +#include "lwip/sockets.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* some rarely used options */ +#ifndef LWIP_DNS_API_DECLARE_H_ERRNO +#define LWIP_DNS_API_DECLARE_H_ERRNO 1 +#endif + +#ifndef LWIP_DNS_API_DEFINE_ERRORS +#define LWIP_DNS_API_DEFINE_ERRORS 1 +#endif + +#ifndef LWIP_DNS_API_DEFINE_FLAGS +#define LWIP_DNS_API_DEFINE_FLAGS 1 +#endif + +#ifndef LWIP_DNS_API_DECLARE_STRUCTS +#define LWIP_DNS_API_DECLARE_STRUCTS 1 +#endif + +#if LWIP_DNS_API_DEFINE_ERRORS +/** Errors used by the DNS API functions, h_errno can be one of them */ +#define EAI_NONAME 200 +#define EAI_SERVICE 201 +#define EAI_FAIL 202 +#define EAI_MEMORY 203 +#define EAI_FAMILY 204 + +#define HOST_NOT_FOUND 210 +#define NO_DATA 211 +#define NO_RECOVERY 212 +#define TRY_AGAIN 213 +#endif /* LWIP_DNS_API_DEFINE_ERRORS */ + +#if LWIP_DNS_API_DEFINE_FLAGS +/* input flags for struct addrinfo */ +#define AI_PASSIVE 0x01 +#define AI_CANONNAME 0x02 +#define AI_NUMERICHOST 0x04 +#define AI_NUMERICSERV 0x08 +#define AI_V4MAPPED 0x10 +#define AI_ALL 0x20 +#define AI_ADDRCONFIG 0x40 +#endif /* LWIP_DNS_API_DEFINE_FLAGS */ + +#if LWIP_DNS_API_DECLARE_STRUCTS +struct hostent { + char *h_name; /* Official name of the host. */ + char **h_aliases; /* A pointer to an array of pointers to alternative host names, + terminated by a null pointer. */ + int h_addrtype; /* Address type. */ + int h_length; /* The length, in bytes, of the address. */ + char **h_addr_list; /* A pointer to an array of pointers to network addresses (in + network byte order) for the host, terminated by a null pointer. */ +#define h_addr h_addr_list[0] /* for backward compatibility */ +}; + +struct addrinfo { + int ai_flags; /* Input flags. */ + int ai_family; /* Address family of socket. */ + int ai_socktype; /* Socket type. */ + int ai_protocol; /* Protocol of socket. */ + socklen_t ai_addrlen; /* Length of socket address. */ + struct sockaddr *ai_addr; /* Socket address of socket. */ + char *ai_canonname; /* Canonical name of service location. */ + struct addrinfo *ai_next; /* Pointer to next in list. */ +}; +#endif /* LWIP_DNS_API_DECLARE_STRUCTS */ + +#define NETDB_ELEM_SIZE (sizeof(struct addrinfo) + sizeof(struct sockaddr_storage) + DNS_MAX_NAME_LENGTH + 1) + +#if LWIP_DNS_API_DECLARE_H_ERRNO +/* application accessible error code set by the DNS API functions */ +extern int h_errno; +#endif /* LWIP_DNS_API_DECLARE_H_ERRNO*/ + +struct hostent *lwip_gethostbyname(const char *name); +int lwip_gethostbyname_r(const char *name, struct hostent *ret, char *buf, + size_t buflen, struct hostent **result, int *h_errnop); +void lwip_freeaddrinfo(struct addrinfo *ai); +int lwip_getaddrinfo(const char *nodename, + const char *servname, + const struct addrinfo *hints, + struct addrinfo **res); + +#if LWIP_COMPAT_SOCKETS +/** @ingroup netdbapi */ +#define gethostbyname(name) lwip_gethostbyname(name) +/** @ingroup netdbapi */ +#define gethostbyname_r(name, ret, buf, buflen, result, h_errnop) \ + lwip_gethostbyname_r(name, ret, buf, buflen, result, h_errnop) +/** @ingroup netdbapi */ +#define freeaddrinfo(addrinfo) lwip_freeaddrinfo(addrinfo) +/** @ingroup netdbapi */ +#define getaddrinfo(nodname, servname, hints, res) \ + lwip_getaddrinfo(nodname, servname, hints, res) +#endif /* LWIP_COMPAT_SOCKETS */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_DNS && LWIP_SOCKET */ + +#endif /* LWIP_HDR_NETDB_H */ diff --git a/Other/tun2socks/core/c/include/lwip/netif.h b/Other/tun2socks/core/c/include/lwip/netif.h new file mode 100644 index 0000000..911196a --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/netif.h @@ -0,0 +1,669 @@ +/** + * @file + * netif API (to be used from TCPIP thread) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_NETIF_H +#define LWIP_HDR_NETIF_H + +#include "lwip/opt.h" + +#define ENABLE_LOOPBACK (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF) + +#include "lwip/err.h" + +#include "lwip/ip_addr.h" + +#include "lwip/def.h" +#include "lwip/pbuf.h" +#include "lwip/stats.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Throughout this file, IP addresses are expected to be in + * the same byte order as in IP_PCB. */ + +/** Must be the maximum of all used hardware address lengths + across all types of interfaces in use. + This does not have to be changed, normally. */ +#ifndef NETIF_MAX_HWADDR_LEN +#define NETIF_MAX_HWADDR_LEN 6U +#endif + +/** The size of a fully constructed netif name which the + * netif can be identified by in APIs. Composed of + * 2 chars, 3 (max) digits, and 1 \0 + */ +#define NETIF_NAMESIZE 6 + +/** + * @defgroup netif_flags Flags + * @ingroup netif + * @{ + */ + +/** Whether the network interface is 'up'. This is + * a software flag used to control whether this network + * interface is enabled and processes traffic. + * It must be set by the startup code before this netif can be used + * (also for dhcp/autoip). + */ +#define NETIF_FLAG_UP 0x01U +/** If set, the netif has broadcast capability. + * Set by the netif driver in its init function. */ +#define NETIF_FLAG_BROADCAST 0x02U +/** If set, the interface has an active link + * (set by the network interface driver). + * Either set by the netif driver in its init function (if the link + * is up at that time) or at a later point once the link comes up + * (if link detection is supported by the hardware). */ +#define NETIF_FLAG_LINK_UP 0x04U +/** If set, the netif is an ethernet device using ARP. + * Set by the netif driver in its init function. + * Used to check input packet types and use of DHCP. */ +#define NETIF_FLAG_ETHARP 0x08U +/** If set, the netif is an ethernet device. It might not use + * ARP or TCP/IP if it is used for PPPoE only. + */ +#define NETIF_FLAG_ETHERNET 0x10U +/** If set, the netif has IGMP capability. + * Set by the netif driver in its init function. */ +#define NETIF_FLAG_IGMP 0x20U +/** If set, the netif has MLD6 capability. + * Set by the netif driver in its init function. */ +#define NETIF_FLAG_MLD6 0x40U + +/** + * @} + */ + +enum lwip_internal_netif_client_data_index +{ +#if LWIP_IPV4 +#if LWIP_DHCP + LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, +#endif +#if LWIP_AUTOIP + LWIP_NETIF_CLIENT_DATA_INDEX_AUTOIP, +#endif +#if LWIP_IGMP + LWIP_NETIF_CLIENT_DATA_INDEX_IGMP, +#endif +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 +#if LWIP_IPV6_DHCP6 + LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, +#endif +#if LWIP_IPV6_MLD + LWIP_NETIF_CLIENT_DATA_INDEX_MLD6, +#endif +#endif /* LWIP_IPV6 */ + LWIP_NETIF_CLIENT_DATA_INDEX_MAX +}; + +#if LWIP_CHECKSUM_CTRL_PER_NETIF +#define NETIF_CHECKSUM_GEN_IP 0x0001 +#define NETIF_CHECKSUM_GEN_UDP 0x0002 +#define NETIF_CHECKSUM_GEN_TCP 0x0004 +#define NETIF_CHECKSUM_GEN_ICMP 0x0008 +#define NETIF_CHECKSUM_GEN_ICMP6 0x0010 +#define NETIF_CHECKSUM_CHECK_IP 0x0100 +#define NETIF_CHECKSUM_CHECK_UDP 0x0200 +#define NETIF_CHECKSUM_CHECK_TCP 0x0400 +#define NETIF_CHECKSUM_CHECK_ICMP 0x0800 +#define NETIF_CHECKSUM_CHECK_ICMP6 0x1000 +#define NETIF_CHECKSUM_ENABLE_ALL 0xFFFF +#define NETIF_CHECKSUM_DISABLE_ALL 0x0000 +#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF */ + +struct netif; + +/** MAC Filter Actions, these are passed to a netif's igmp_mac_filter or + * mld_mac_filter callback function. */ +enum netif_mac_filter_action { + /** Delete a filter entry */ + NETIF_DEL_MAC_FILTER = 0, + /** Add a filter entry */ + NETIF_ADD_MAC_FILTER = 1 +}; + +/** Function prototype for netif init functions. Set up flags and output/linkoutput + * callback functions in this function. + * + * @param netif The netif to initialize + */ +typedef err_t (*netif_init_fn)(struct netif *netif); +/** Function prototype for netif->input functions. This function is saved as 'input' + * callback function in the netif struct. Call it when a packet has been received. + * + * @param p The received packet, copied into a pbuf + * @param inp The netif which received the packet + * @return ERR_OK if the packet was handled + * != ERR_OK is the packet was NOT handled, in this case, the caller has + * to free the pbuf + */ +typedef err_t (*netif_input_fn)(struct pbuf *p, struct netif *inp); + +#if LWIP_IPV4 +/** Function prototype for netif->output functions. Called by lwIP when a packet + * shall be sent. For ethernet netif, set this to 'etharp_output' and set + * 'linkoutput'. + * + * @param netif The netif which shall send a packet + * @param p The packet to send (p->payload points to IP header) + * @param ipaddr The IP address to which the packet shall be sent + */ +typedef err_t (*netif_output_fn)(struct netif *netif, struct pbuf *p, + const ip4_addr_t *ipaddr); +#endif /* LWIP_IPV4*/ + +#if LWIP_IPV6 +/** Function prototype for netif->output_ip6 functions. Called by lwIP when a packet + * shall be sent. For ethernet netif, set this to 'ethip6_output' and set + * 'linkoutput'. + * + * @param netif The netif which shall send a packet + * @param p The packet to send (p->payload points to IP header) + * @param ipaddr The IPv6 address to which the packet shall be sent + */ +typedef err_t (*netif_output_ip6_fn)(struct netif *netif, struct pbuf *p, + const ip6_addr_t *ipaddr); +#endif /* LWIP_IPV6 */ + +/** Function prototype for netif->linkoutput functions. Only used for ethernet + * netifs. This function is called by ARP when a packet shall be sent. + * + * @param netif The netif which shall send a packet + * @param p The packet to send (raw ethernet packet) + */ +typedef err_t (*netif_linkoutput_fn)(struct netif *netif, struct pbuf *p); +/** Function prototype for netif status- or link-callback functions. */ +typedef void (*netif_status_callback_fn)(struct netif *netif); +#if LWIP_IPV4 && LWIP_IGMP +/** Function prototype for netif igmp_mac_filter functions */ +typedef err_t (*netif_igmp_mac_filter_fn)(struct netif *netif, + const ip4_addr_t *group, enum netif_mac_filter_action action); +#endif /* LWIP_IPV4 && LWIP_IGMP */ +#if LWIP_IPV6 && LWIP_IPV6_MLD +/** Function prototype for netif mld_mac_filter functions */ +typedef err_t (*netif_mld_mac_filter_fn)(struct netif *netif, + const ip6_addr_t *group, enum netif_mac_filter_action action); +#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ + +#if LWIP_DHCP || LWIP_AUTOIP || LWIP_IGMP || LWIP_IPV6_MLD || LWIP_IPV6_DHCP6 || (LWIP_NUM_NETIF_CLIENT_DATA > 0) +#if LWIP_NUM_NETIF_CLIENT_DATA > 0 +u8_t netif_alloc_client_data_id(void); +#endif +/** @ingroup netif_cd + * Set client data. Obtain ID from netif_alloc_client_data_id(). + */ +#define netif_set_client_data(netif, id, data) netif_get_client_data(netif, id) = (data) +/** @ingroup netif_cd + * Get client data. Obtain ID from netif_alloc_client_data_id(). + */ +#define netif_get_client_data(netif, id) (netif)->client_data[(id)] +#endif + +#if (LWIP_IPV4 && LWIP_ARP && (ARP_TABLE_SIZE > 0x7f)) || (LWIP_IPV6 && (LWIP_ND6_NUM_DESTINATIONS > 0x7f)) +typedef u16_t netif_addr_idx_t; +#define NETIF_ADDR_IDX_MAX 0x7FFF +#else +typedef u8_t netif_addr_idx_t; +#define NETIF_ADDR_IDX_MAX 0x7F +#endif + +#if LWIP_NETIF_HWADDRHINT +#define LWIP_NETIF_USE_HINTS 1 +struct netif_hint { + netif_addr_idx_t addr_hint; +}; +#else /* LWIP_NETIF_HWADDRHINT */ +#define LWIP_NETIF_USE_HINTS 0 +#endif /* LWIP_NETIF_HWADDRHINT */ + +/** Generic data structure used for all lwIP network interfaces. + * The following fields should be filled in by the initialization + * function for the device driver: hwaddr_len, hwaddr[], mtu, flags */ +struct netif { +#if !LWIP_SINGLE_NETIF + /** pointer to next in linked list */ + struct netif *next; +#endif + +#if LWIP_IPV4 + /** IP address configuration in network byte order */ + ip_addr_t ip_addr; + ip_addr_t netmask; + ip_addr_t gw; +#endif /* LWIP_IPV4 */ +#if LWIP_IPV6 + /** Array of IPv6 addresses for this netif. */ + ip_addr_t ip6_addr[LWIP_IPV6_NUM_ADDRESSES]; + /** The state of each IPv6 address (Tentative, Preferred, etc). + * @see ip6_addr.h */ + u8_t ip6_addr_state[LWIP_IPV6_NUM_ADDRESSES]; +#if LWIP_IPV6_ADDRESS_LIFETIMES + /** Remaining valid and preferred lifetime of each IPv6 address, in seconds. + * For valid lifetimes, the special value of IP6_ADDR_LIFE_STATIC (0) + * indicates the address is static and has no lifetimes. */ + u32_t ip6_addr_valid_life[LWIP_IPV6_NUM_ADDRESSES]; + u32_t ip6_addr_pref_life[LWIP_IPV6_NUM_ADDRESSES]; +#endif /* LWIP_IPV6_ADDRESS_LIFETIMES */ +#endif /* LWIP_IPV6 */ + /** This function is called by the network device driver + * to pass a packet up the TCP/IP stack. */ + netif_input_fn input; +#if LWIP_IPV4 + /** This function is called by the IP module when it wants + * to send a packet on the interface. This function typically + * first resolves the hardware address, then sends the packet. + * For ethernet physical layer, this is usually etharp_output() */ + netif_output_fn output; +#endif /* LWIP_IPV4 */ + /** This function is called by ethernet_output() when it wants + * to send a packet on the interface. This function outputs + * the pbuf as-is on the link medium. */ + netif_linkoutput_fn linkoutput; +#if LWIP_IPV6 + /** This function is called by the IPv6 module when it wants + * to send a packet on the interface. This function typically + * first resolves the hardware address, then sends the packet. + * For ethernet physical layer, this is usually ethip6_output() */ + netif_output_ip6_fn output_ip6; +#endif /* LWIP_IPV6 */ +#if LWIP_NETIF_STATUS_CALLBACK + /** This function is called when the netif state is set to up or down + */ + netif_status_callback_fn status_callback; +#endif /* LWIP_NETIF_STATUS_CALLBACK */ +#if LWIP_NETIF_LINK_CALLBACK + /** This function is called when the netif link is set to up or down + */ + netif_status_callback_fn link_callback; +#endif /* LWIP_NETIF_LINK_CALLBACK */ +#if LWIP_NETIF_REMOVE_CALLBACK + /** This function is called when the netif has been removed */ + netif_status_callback_fn remove_callback; +#endif /* LWIP_NETIF_REMOVE_CALLBACK */ + /** This field can be set by the device driver and could point + * to state information for the device. */ + void *state; +#ifdef netif_get_client_data + void* client_data[LWIP_NETIF_CLIENT_DATA_INDEX_MAX + LWIP_NUM_NETIF_CLIENT_DATA]; +#endif +#if LWIP_NETIF_HOSTNAME + /* the hostname for this netif, NULL is a valid value */ + const char* hostname; +#endif /* LWIP_NETIF_HOSTNAME */ +#if LWIP_CHECKSUM_CTRL_PER_NETIF + u16_t chksum_flags; +#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF*/ + /** maximum transfer unit (in bytes) */ + u16_t mtu; +#if LWIP_IPV6 && LWIP_ND6_ALLOW_RA_UPDATES + /** maximum transfer unit (in bytes), updated by RA */ + u16_t mtu6; +#endif /* LWIP_IPV6 && LWIP_ND6_ALLOW_RA_UPDATES */ + /** link level hardware address of this interface */ + u8_t hwaddr[NETIF_MAX_HWADDR_LEN]; + /** number of bytes used in hwaddr */ + u8_t hwaddr_len; + /** flags (@see @ref netif_flags) */ + u8_t flags; + /** descriptive abbreviation */ + char name[2]; + /** number of this interface. Used for @ref if_api and @ref netifapi_netif, + * as well as for IPv6 zones */ + u8_t num; +#if LWIP_IPV6_AUTOCONFIG + /** is this netif enabled for IPv6 autoconfiguration */ + u8_t ip6_autoconfig_enabled; +#endif /* LWIP_IPV6_AUTOCONFIG */ +#if LWIP_IPV6_SEND_ROUTER_SOLICIT + /** Number of Router Solicitation messages that remain to be sent. */ + u8_t rs_count; +#endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */ +#if MIB2_STATS + /** link type (from "snmp_ifType" enum from snmp_mib2.h) */ + u8_t link_type; + /** (estimate) link speed */ + u32_t link_speed; + /** timestamp at last change made (up/down) */ + u32_t ts; + /** counters */ + struct stats_mib2_netif_ctrs mib2_counters; +#endif /* MIB2_STATS */ +#if LWIP_IPV4 && LWIP_IGMP + /** This function could be called to add or delete an entry in the multicast + filter table of the ethernet MAC.*/ + netif_igmp_mac_filter_fn igmp_mac_filter; +#endif /* LWIP_IPV4 && LWIP_IGMP */ +#if LWIP_IPV6 && LWIP_IPV6_MLD + /** This function could be called to add or delete an entry in the IPv6 multicast + filter table of the ethernet MAC. */ + netif_mld_mac_filter_fn mld_mac_filter; +#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ +#if LWIP_NETIF_USE_HINTS + struct netif_hint *hints; +#endif /* LWIP_NETIF_USE_HINTS */ +#if ENABLE_LOOPBACK + /* List of packets to be queued for ourselves. */ + struct pbuf *loop_first; + struct pbuf *loop_last; +#if LWIP_LOOPBACK_MAX_PBUFS + u16_t loop_cnt_current; +#endif /* LWIP_LOOPBACK_MAX_PBUFS */ +#endif /* ENABLE_LOOPBACK */ +}; + +#if LWIP_CHECKSUM_CTRL_PER_NETIF +#define NETIF_SET_CHECKSUM_CTRL(netif, chksumflags) do { \ + (netif)->chksum_flags = chksumflags; } while(0) +#define IF__NETIF_CHECKSUM_ENABLED(netif, chksumflag) if (((netif) == NULL) || (((netif)->chksum_flags & (chksumflag)) != 0)) +#else /* LWIP_CHECKSUM_CTRL_PER_NETIF */ +#define NETIF_SET_CHECKSUM_CTRL(netif, chksumflags) +#define IF__NETIF_CHECKSUM_ENABLED(netif, chksumflag) +#endif /* LWIP_CHECKSUM_CTRL_PER_NETIF */ + +#if LWIP_SINGLE_NETIF +#define NETIF_FOREACH(netif) if (((netif) = netif_default) != NULL) +#else /* LWIP_SINGLE_NETIF */ +/** The list of network interfaces. */ +extern struct netif *netif_list; +#define NETIF_FOREACH(netif) for ((netif) = netif_list; (netif) != NULL; (netif) = (netif)->next) +#endif /* LWIP_SINGLE_NETIF */ +/** The default network interface. */ +extern struct netif *netif_default; + +void netif_init(void); + +struct netif *netif_add_noaddr(struct netif *netif, void *state, netif_init_fn init, netif_input_fn input); + +#if LWIP_IPV4 +struct netif *netif_add(struct netif *netif, + const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw, + void *state, netif_init_fn init, netif_input_fn input); +void netif_set_addr(struct netif *netif, const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, + const ip4_addr_t *gw); +#else /* LWIP_IPV4 */ +struct netif *netif_add(struct netif *netif, void *state, netif_init_fn init, netif_input_fn input); +#endif /* LWIP_IPV4 */ +void netif_remove(struct netif * netif); + +/* Returns a network interface given its name. The name is of the form + "et0", where the first two letters are the "name" field in the + netif structure, and the digit is in the num field in the same + structure. */ +struct netif *netif_find(const char *name); + +void netif_set_default(struct netif *netif); + +#if LWIP_IPV4 +void netif_set_ipaddr(struct netif *netif, const ip4_addr_t *ipaddr); +void netif_set_netmask(struct netif *netif, const ip4_addr_t *netmask); +void netif_set_gw(struct netif *netif, const ip4_addr_t *gw); +/** @ingroup netif_ip4 */ +#define netif_ip4_addr(netif) ((const ip4_addr_t*)ip_2_ip4(&((netif)->ip_addr))) +/** @ingroup netif_ip4 */ +#define netif_ip4_netmask(netif) ((const ip4_addr_t*)ip_2_ip4(&((netif)->netmask))) +/** @ingroup netif_ip4 */ +#define netif_ip4_gw(netif) ((const ip4_addr_t*)ip_2_ip4(&((netif)->gw))) +/** @ingroup netif_ip4 */ +#define netif_ip_addr4(netif) ((const ip_addr_t*)&((netif)->ip_addr)) +/** @ingroup netif_ip4 */ +#define netif_ip_netmask4(netif) ((const ip_addr_t*)&((netif)->netmask)) +/** @ingroup netif_ip4 */ +#define netif_ip_gw4(netif) ((const ip_addr_t*)&((netif)->gw)) +#endif /* LWIP_IPV4 */ + +#define netif_set_flags(netif, set_flags) do { (netif)->flags = (u8_t)((netif)->flags | (set_flags)); } while(0) +#define netif_clear_flags(netif, clr_flags) do { (netif)->flags = (u8_t)((netif)->flags & (u8_t)(~(clr_flags) & 0xff)); } while(0) +#define netif_is_flag_set(nefif, flag) (((netif)->flags & (flag)) != 0) + +void netif_set_up(struct netif *netif); +void netif_set_down(struct netif *netif); +/** @ingroup netif + * Ask if an interface is up + */ +#define netif_is_up(netif) (((netif)->flags & NETIF_FLAG_UP) ? (u8_t)1 : (u8_t)0) + +#if LWIP_NETIF_STATUS_CALLBACK +void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback); +#endif /* LWIP_NETIF_STATUS_CALLBACK */ +#if LWIP_NETIF_REMOVE_CALLBACK +void netif_set_remove_callback(struct netif *netif, netif_status_callback_fn remove_callback); +#endif /* LWIP_NETIF_REMOVE_CALLBACK */ + +void netif_set_link_up(struct netif *netif); +void netif_set_link_down(struct netif *netif); +/** Ask if a link is up */ +#define netif_is_link_up(netif) (((netif)->flags & NETIF_FLAG_LINK_UP) ? (u8_t)1 : (u8_t)0) + +#if LWIP_NETIF_LINK_CALLBACK +void netif_set_link_callback(struct netif *netif, netif_status_callback_fn link_callback); +#endif /* LWIP_NETIF_LINK_CALLBACK */ + +#if LWIP_NETIF_HOSTNAME +/** @ingroup netif */ +#define netif_set_hostname(netif, name) do { if((netif) != NULL) { (netif)->hostname = name; }}while(0) +/** @ingroup netif */ +#define netif_get_hostname(netif) (((netif) != NULL) ? ((netif)->hostname) : NULL) +#endif /* LWIP_NETIF_HOSTNAME */ + +#if LWIP_IGMP +/** @ingroup netif */ +#define netif_set_igmp_mac_filter(netif, function) do { if((netif) != NULL) { (netif)->igmp_mac_filter = function; }}while(0) +#define netif_get_igmp_mac_filter(netif) (((netif) != NULL) ? ((netif)->igmp_mac_filter) : NULL) +#endif /* LWIP_IGMP */ + +#if LWIP_IPV6 && LWIP_IPV6_MLD +/** @ingroup netif */ +#define netif_set_mld_mac_filter(netif, function) do { if((netif) != NULL) { (netif)->mld_mac_filter = function; }}while(0) +#define netif_get_mld_mac_filter(netif) (((netif) != NULL) ? ((netif)->mld_mac_filter) : NULL) +#define netif_mld_mac_filter(netif, addr, action) do { if((netif) && (netif)->mld_mac_filter) { (netif)->mld_mac_filter((netif), (addr), (action)); }}while(0) +#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ + +#if ENABLE_LOOPBACK +err_t netif_loop_output(struct netif *netif, struct pbuf *p); +void netif_poll(struct netif *netif); +#if !LWIP_NETIF_LOOPBACK_MULTITHREADING +void netif_poll_all(void); +#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */ +#endif /* ENABLE_LOOPBACK */ + +err_t netif_input(struct pbuf *p, struct netif *inp); + +#if LWIP_IPV6 +/** @ingroup netif_ip6 */ +#define netif_ip_addr6(netif, i) ((const ip_addr_t*)(&((netif)->ip6_addr[i]))) +/** @ingroup netif_ip6 */ +#define netif_ip6_addr(netif, i) ((const ip6_addr_t*)ip_2_ip6(&((netif)->ip6_addr[i]))) +void netif_ip6_addr_set(struct netif *netif, s8_t addr_idx, const ip6_addr_t *addr6); +void netif_ip6_addr_set_parts(struct netif *netif, s8_t addr_idx, u32_t i0, u32_t i1, u32_t i2, u32_t i3); +#define netif_ip6_addr_state(netif, i) ((netif)->ip6_addr_state[i]) +void netif_ip6_addr_set_state(struct netif* netif, s8_t addr_idx, u8_t state); +s8_t netif_get_ip6_addr_match(struct netif *netif, const ip6_addr_t *ip6addr); +void netif_create_ip6_linklocal_address(struct netif *netif, u8_t from_mac_48bit); +err_t netif_add_ip6_address(struct netif *netif, const ip6_addr_t *ip6addr, s8_t *chosen_idx); +#define netif_set_ip6_autoconfig_enabled(netif, action) do { if(netif) { (netif)->ip6_autoconfig_enabled = (action); }}while(0) +#if LWIP_IPV6_ADDRESS_LIFETIMES +#define netif_ip6_addr_valid_life(netif, i) \ + (((netif) != NULL) ? ((netif)->ip6_addr_valid_life[i]) : IP6_ADDR_LIFE_STATIC) +#define netif_ip6_addr_set_valid_life(netif, i, secs) \ + do { if (netif != NULL) { (netif)->ip6_addr_valid_life[i] = (secs); }} while (0) +#define netif_ip6_addr_pref_life(netif, i) \ + (((netif) != NULL) ? ((netif)->ip6_addr_pref_life[i]) : IP6_ADDR_LIFE_STATIC) +#define netif_ip6_addr_set_pref_life(netif, i, secs) \ + do { if (netif != NULL) { (netif)->ip6_addr_pref_life[i] = (secs); }} while (0) +#define netif_ip6_addr_isstatic(netif, i) \ + (netif_ip6_addr_valid_life((netif), (i)) == IP6_ADDR_LIFE_STATIC) +#else /* !LWIP_IPV6_ADDRESS_LIFETIMES */ +#define netif_ip6_addr_isstatic(netif, i) (1) /* all addresses are static */ +#endif /* !LWIP_IPV6_ADDRESS_LIFETIMES */ +#if LWIP_ND6_ALLOW_RA_UPDATES +#define netif_mtu6(netif) ((netif)->mtu6) +#else /* LWIP_ND6_ALLOW_RA_UPDATES */ +#define netif_mtu6(netif) ((netif)->mtu) +#endif /* LWIP_ND6_ALLOW_RA_UPDATES */ +#endif /* LWIP_IPV6 */ + +#if LWIP_NETIF_USE_HINTS +#define NETIF_SET_HINTS(netif, netifhint) (netif)->hints = (netifhint) +#define NETIF_RESET_HINTS(netif) (netif)->hints = NULL +#else /* LWIP_NETIF_USE_HINTS */ +#define NETIF_SET_HINTS(netif, netifhint) +#define NETIF_RESET_HINTS(netif) +#endif /* LWIP_NETIF_USE_HINTS */ + +u8_t netif_name_to_index(const char *name); +char * netif_index_to_name(u8_t idx, char *name); +struct netif* netif_get_by_index(u8_t idx); + +/* Interface indexes always start at 1 per RFC 3493, section 4, num starts at 0 (internal index is 0..254)*/ +#define netif_get_index(netif) ((u8_t)((netif)->num + 1)) +#define NETIF_NO_INDEX (0) + +/** + * @ingroup netif + * Extended netif status callback (NSC) reasons flags. + * May be extended in the future! + */ +typedef u16_t netif_nsc_reason_t; + +/* used for initialization only */ +#define LWIP_NSC_NONE 0x0000 +/** netif was added. arg: NULL. Called AFTER netif was added. */ +#define LWIP_NSC_NETIF_ADDED 0x0001 +/** netif was removed. arg: NULL. Called BEFORE netif is removed. */ +#define LWIP_NSC_NETIF_REMOVED 0x0002 +/** link changed */ +#define LWIP_NSC_LINK_CHANGED 0x0004 +/** netif administrative status changed.\n + * up is called AFTER netif is set up.\n + * down is called BEFORE the netif is actually set down. */ +#define LWIP_NSC_STATUS_CHANGED 0x0008 +/** IPv4 address has changed */ +#define LWIP_NSC_IPV4_ADDRESS_CHANGED 0x0010 +/** IPv4 gateway has changed */ +#define LWIP_NSC_IPV4_GATEWAY_CHANGED 0x0020 +/** IPv4 netmask has changed */ +#define LWIP_NSC_IPV4_NETMASK_CHANGED 0x0040 +/** called AFTER IPv4 address/gateway/netmask changes have been applied */ +#define LWIP_NSC_IPV4_SETTINGS_CHANGED 0x0080 +/** IPv6 address was added */ +#define LWIP_NSC_IPV6_SET 0x0100 +/** IPv6 address state has changed */ +#define LWIP_NSC_IPV6_ADDR_STATE_CHANGED 0x0200 + +/** @ingroup netif + * Argument supplied to netif_ext_callback_fn. + */ +typedef union +{ + /** Args to LWIP_NSC_LINK_CHANGED callback */ + struct link_changed_s + { + /** 1: up; 0: down */ + u8_t state; + } link_changed; + /** Args to LWIP_NSC_STATUS_CHANGED callback */ + struct status_changed_s + { + /** 1: up; 0: down */ + u8_t state; + } status_changed; + /** Args to LWIP_NSC_IPV4_ADDRESS_CHANGED|LWIP_NSC_IPV4_GATEWAY_CHANGED|LWIP_NSC_IPV4_NETMASK_CHANGED|LWIP_NSC_IPV4_SETTINGS_CHANGED callback */ + struct ipv4_changed_s + { + /** Old IPv4 address */ + const ip_addr_t* old_address; + const ip_addr_t* old_netmask; + const ip_addr_t* old_gw; + } ipv4_changed; + /** Args to LWIP_NSC_IPV6_SET callback */ + struct ipv6_set_s + { + /** Index of changed IPv6 address */ + s8_t addr_index; + /** Old IPv6 address */ + const ip_addr_t* old_address; + } ipv6_set; + /** Args to LWIP_NSC_IPV6_ADDR_STATE_CHANGED callback */ + struct ipv6_addr_state_changed_s + { + /** Index of affected IPv6 address */ + s8_t addr_index; + /** Old IPv6 address state */ + u8_t old_state; + /** Affected IPv6 address */ + const ip_addr_t* address; + } ipv6_addr_state_changed; +} netif_ext_callback_args_t; + +/** + * @ingroup netif + * Function used for extended netif status callbacks + * Note: When parsing reason argument, keep in mind that more reasons may be added in the future! + * @param netif netif that is affected by change + * @param reason change reason + * @param args depends on reason, see reason description + */ +typedef void (*netif_ext_callback_fn)(struct netif* netif, netif_nsc_reason_t reason, const netif_ext_callback_args_t* args); + +#if LWIP_NETIF_EXT_STATUS_CALLBACK +struct netif_ext_callback; +typedef struct netif_ext_callback +{ + netif_ext_callback_fn callback_fn; + struct netif_ext_callback* next; +} netif_ext_callback_t; + +#define NETIF_DECLARE_EXT_CALLBACK(name) static netif_ext_callback_t name; +void netif_add_ext_callback(netif_ext_callback_t* callback, netif_ext_callback_fn fn); +void netif_remove_ext_callback(netif_ext_callback_t* callback); +void netif_invoke_ext_callback(struct netif* netif, netif_nsc_reason_t reason, const netif_ext_callback_args_t* args); +#else +#define NETIF_DECLARE_EXT_CALLBACK(name) +#define netif_add_ext_callback(callback, fn) +#define netif_remove_ext_callback(callback) +#define netif_invoke_ext_callback(netif, reason, args) +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_NETIF_H */ diff --git a/Other/tun2socks/core/c/include/lwip/netifapi.h b/Other/tun2socks/core/c/include/lwip/netifapi.h new file mode 100644 index 0000000..e063179 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/netifapi.h @@ -0,0 +1,161 @@ +/** + * @file + * netif API (to be used from non-TCPIP threads) + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ +#ifndef LWIP_HDR_NETIFAPI_H +#define LWIP_HDR_NETIFAPI_H + +#include "lwip/opt.h" + +#if LWIP_NETIF_API /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/sys.h" +#include "lwip/netif.h" +#include "lwip/dhcp.h" +#include "lwip/autoip.h" +#include "lwip/priv/tcpip_priv.h" +#include "lwip/priv/api_msg.h" +#include "lwip/prot/ethernet.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* API for application */ +#if LWIP_ARP && LWIP_IPV4 +/* Used for netfiapi_arp_* APIs */ +enum netifapi_arp_entry { + NETIFAPI_ARP_PERM /* Permanent entry */ + /* Other entry types can be added here */ +}; + +/** @ingroup netifapi_arp */ +err_t netifapi_arp_add(const ip4_addr_t *ipaddr, struct eth_addr *ethaddr, enum netifapi_arp_entry type); +/** @ingroup netifapi_arp */ +err_t netifapi_arp_remove(const ip4_addr_t *ipaddr, enum netifapi_arp_entry type); +#endif /* LWIP_ARP && LWIP_IPV4 */ + +err_t netifapi_netif_add(struct netif *netif, +#if LWIP_IPV4 + const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw, +#endif /* LWIP_IPV4 */ + void *state, netif_init_fn init, netif_input_fn input); + +#if LWIP_IPV4 +err_t netifapi_netif_set_addr(struct netif *netif, const ip4_addr_t *ipaddr, + const ip4_addr_t *netmask, const ip4_addr_t *gw); +#endif /* LWIP_IPV4*/ + +err_t netifapi_netif_common(struct netif *netif, netifapi_void_fn voidfunc, + netifapi_errt_fn errtfunc); + +/** @ingroup netifapi_netif */ +err_t netifapi_netif_name_to_index(const char *name, u8_t *index); +/** @ingroup netifapi_netif */ +err_t netifapi_netif_index_to_name(u8_t index, char *name); + +/** @ingroup netifapi_netif + * @see netif_remove() + */ +#define netifapi_netif_remove(n) netifapi_netif_common(n, netif_remove, NULL) +/** @ingroup netifapi_netif + * @see netif_set_up() + */ +#define netifapi_netif_set_up(n) netifapi_netif_common(n, netif_set_up, NULL) +/** @ingroup netifapi_netif + * @see netif_set_down() + */ +#define netifapi_netif_set_down(n) netifapi_netif_common(n, netif_set_down, NULL) +/** @ingroup netifapi_netif + * @see netif_set_default() + */ +#define netifapi_netif_set_default(n) netifapi_netif_common(n, netif_set_default, NULL) +/** @ingroup netifapi_netif + * @see netif_set_link_up() + */ +#define netifapi_netif_set_link_up(n) netifapi_netif_common(n, netif_set_link_up, NULL) +/** @ingroup netifapi_netif + * @see netif_set_link_down() + */ +#define netifapi_netif_set_link_down(n) netifapi_netif_common(n, netif_set_link_down, NULL) + +/** + * @defgroup netifapi_dhcp4 DHCPv4 + * @ingroup netifapi + * To be called from non-TCPIP threads + */ +/** @ingroup netifapi_dhcp4 + * @see dhcp_start() + */ +#define netifapi_dhcp_start(n) netifapi_netif_common(n, NULL, dhcp_start) +/** + * @ingroup netifapi_dhcp4 + * @deprecated Use netifapi_dhcp_release_and_stop() instead. + */ +#define netifapi_dhcp_stop(n) netifapi_netif_common(n, dhcp_stop, NULL) +/** @ingroup netifapi_dhcp4 + * @see dhcp_inform() + */ +#define netifapi_dhcp_inform(n) netifapi_netif_common(n, dhcp_inform, NULL) +/** @ingroup netifapi_dhcp4 + * @see dhcp_renew() + */ +#define netifapi_dhcp_renew(n) netifapi_netif_common(n, NULL, dhcp_renew) +/** + * @ingroup netifapi_dhcp4 + * @deprecated Use netifapi_dhcp_release_and_stop() instead. + */ +#define netifapi_dhcp_release(n) netifapi_netif_common(n, NULL, dhcp_release) +/** @ingroup netifapi_dhcp4 + * @see dhcp_release_and_stop() + */ +#define netifapi_dhcp_release_and_stop(n) netifapi_netif_common(n, dhcp_release_and_stop, NULL) + +/** + * @defgroup netifapi_autoip AUTOIP + * @ingroup netifapi + * To be called from non-TCPIP threads + */ +/** @ingroup netifapi_autoip + * @see autoip_start() + */ +#define netifapi_autoip_start(n) netifapi_netif_common(n, NULL, autoip_start) +/** @ingroup netifapi_autoip + * @see autoip_stop() + */ +#define netifapi_autoip_stop(n) netifapi_netif_common(n, NULL, autoip_stop) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_NETIF_API */ + +#endif /* LWIP_HDR_NETIFAPI_H */ diff --git a/Other/tun2socks/core/c/include/lwip/opt.h b/Other/tun2socks/core/c/include/lwip/opt.h new file mode 100644 index 0000000..82c420c --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/opt.h @@ -0,0 +1,3519 @@ +/** + * @file + * + * lwIP Options Configuration + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +/* + * NOTE: || defined __DOXYGEN__ is a workaround for doxygen bug - + * without this, doxygen does not see the actual #define + */ + +#if !defined LWIP_HDR_OPT_H +#define LWIP_HDR_OPT_H + +/* + * Include user defined options first. Anything not defined in these files + * will be set to standard values. Override anything you don't like! + */ +#include "lwipopts.h" +#include "lwip/debug.h" + +/** + * @defgroup lwip_opts Options (lwipopts.h) + * @ingroup lwip + * + * @defgroup lwip_opts_debug Debugging + * @ingroup lwip_opts + * + * @defgroup lwip_opts_infrastructure Infrastructure + * @ingroup lwip_opts + * + * @defgroup lwip_opts_callback Callback-style APIs + * @ingroup lwip_opts + * + * @defgroup lwip_opts_threadsafe_apis Thread-safe APIs + * @ingroup lwip_opts + */ + + /* + ------------------------------------ + -------------- NO SYS -------------- + ------------------------------------ +*/ +/** + * @defgroup lwip_opts_nosys NO_SYS + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * NO_SYS==1: Use lwIP without OS-awareness (no thread, semaphores, mutexes or + * mboxes). This means threaded APIs cannot be used (socket, netconn, + * i.e. everything in the 'api' folder), only the callback-style raw API is + * available (and you have to watch out for yourself that you don't access + * lwIP functions/structures from more than one context at a time!) + */ +#if !defined NO_SYS || defined __DOXYGEN__ +#define NO_SYS 0 +#endif +/** + * @} + */ + +/** + * @defgroup lwip_opts_timers Timers + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * LWIP_TIMERS==0: Drop support for sys_timeout and lwip-internal cyclic timers. + * (the array of lwip-internal cyclic timers is still provided) + * (check NO_SYS_NO_TIMERS for compatibility to old versions) + */ +#if !defined LWIP_TIMERS || defined __DOXYGEN__ +#ifdef NO_SYS_NO_TIMERS +#define LWIP_TIMERS (!NO_SYS || (NO_SYS && !NO_SYS_NO_TIMERS)) +#else +#define LWIP_TIMERS 1 +#endif +#endif + +/** + * LWIP_TIMERS_CUSTOM==1: Provide your own timer implementation. + * Function prototypes in timeouts.h and the array of lwip-internal cyclic timers + * are still included, but the implementation is not. The following functions + * will be required: sys_timeouts_init(), sys_timeout(), sys_untimeout(), + * sys_timeouts_mbox_fetch() + */ +#if !defined LWIP_TIMERS_CUSTOM || defined __DOXYGEN__ +#define LWIP_TIMERS_CUSTOM 0 +#endif +/** + * @} + */ + +/** + * @defgroup lwip_opts_memcpy memcpy + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * MEMCPY: override this if you have a faster implementation at hand than the + * one included in your C library + */ +#if !defined MEMCPY || defined __DOXYGEN__ +#define MEMCPY(dst,src,len) memcpy(dst,src,len) +#endif + +/** + * SMEMCPY: override this with care! Some compilers (e.g. gcc) can inline a + * call to memcpy() if the length is known at compile time and is small. + */ +#if !defined SMEMCPY || defined __DOXYGEN__ +#define SMEMCPY(dst,src,len) memcpy(dst,src,len) +#endif + +/** + * MEMMOVE: override this if you have a faster implementation at hand than the + * one included in your C library. lwIP currently uses MEMMOVE only when IPv6 + * fragmentation support is enabled. + */ +#if !defined MEMMOVE || defined __DOXYGEN__ +#define MEMMOVE(dst,src,len) memmove(dst,src,len) +#endif +/** + * @} + */ + +/* + ------------------------------------ + ----------- Core locking ----------- + ------------------------------------ +*/ +/** + * @defgroup lwip_opts_lock Core locking and MPU + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * LWIP_MPU_COMPATIBLE: enables special memory management mechanism + * which makes lwip able to work on MPU (Memory Protection Unit) system + * by not passing stack-pointers to other threads + * (this decreases performance as memory is allocated from pools instead + * of keeping it on the stack) + */ +#if !defined LWIP_MPU_COMPATIBLE || defined __DOXYGEN__ +#define LWIP_MPU_COMPATIBLE 0 +#endif + +/** + * LWIP_TCPIP_CORE_LOCKING + * Creates a global mutex that is held during TCPIP thread operations. + * Can be locked by client code to perform lwIP operations without changing + * into TCPIP thread using callbacks. See LOCK_TCPIP_CORE() and + * UNLOCK_TCPIP_CORE(). + * Your system should provide mutexes supporting priority inversion to use this. + */ +#if !defined LWIP_TCPIP_CORE_LOCKING || defined __DOXYGEN__ +#define LWIP_TCPIP_CORE_LOCKING 1 +#endif + +/** + * LWIP_TCPIP_CORE_LOCKING_INPUT: when LWIP_TCPIP_CORE_LOCKING is enabled, + * this lets tcpip_input() grab the mutex for input packets as well, + * instead of allocating a message and passing it to tcpip_thread. + * + * ATTENTION: this does not work when tcpip_input() is called from + * interrupt context! + */ +#if !defined LWIP_TCPIP_CORE_LOCKING_INPUT || defined __DOXYGEN__ +#define LWIP_TCPIP_CORE_LOCKING_INPUT 0 +#endif + +/** + * SYS_LIGHTWEIGHT_PROT==1: enable inter-task protection (and task-vs-interrupt + * protection) for certain critical regions during buffer allocation, deallocation + * and memory allocation and deallocation. + * ATTENTION: This is required when using lwIP from more than one context! If + * you disable this, you must be sure what you are doing! + */ +#if !defined SYS_LIGHTWEIGHT_PROT || defined __DOXYGEN__ +#define SYS_LIGHTWEIGHT_PROT 1 +#endif + +/** + * Macro/function to check whether lwIP's threading/locking + * requirements are satisfied during current function call. + * This macro usually calls a function that is implemented in the OS-dependent + * sys layer and performs the following checks: + * - Not in ISR (this should be checked for NO_SYS==1, too!) + * - If @ref LWIP_TCPIP_CORE_LOCKING = 1: TCPIP core lock is held + * - If @ref LWIP_TCPIP_CORE_LOCKING = 0: function is called from TCPIP thread + * @see @ref multithreading + */ +#if !defined LWIP_ASSERT_CORE_LOCKED || defined __DOXYGEN__ +#define LWIP_ASSERT_CORE_LOCKED() +#endif + +/** + * Called as first thing in the lwIP TCPIP thread. Can be used in conjunction + * with @ref LWIP_ASSERT_CORE_LOCKED to check core locking. + * @see @ref multithreading + */ +#if !defined LWIP_MARK_TCPIP_THREAD || defined __DOXYGEN__ +#define LWIP_MARK_TCPIP_THREAD() +#endif +/** + * @} + */ + +/* + ------------------------------------ + ---------- Memory options ---------- + ------------------------------------ +*/ +/** + * @defgroup lwip_opts_mem Heap and memory pools + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * MEM_LIBC_MALLOC==1: Use malloc/free/realloc provided by your C-library + * instead of the lwip internal allocator. Can save code size if you + * already use it. + */ +#if !defined MEM_LIBC_MALLOC || defined __DOXYGEN__ +#define MEM_LIBC_MALLOC 0 +#endif + +/** + * MEMP_MEM_MALLOC==1: Use mem_malloc/mem_free instead of the lwip pool allocator. + * Especially useful with MEM_LIBC_MALLOC but handle with care regarding execution + * speed (heap alloc can be much slower than pool alloc) and usage from interrupts + * (especially if your netif driver allocates PBUF_POOL pbufs for received frames + * from interrupt)! + * ATTENTION: Currently, this uses the heap for ALL pools (also for private pools, + * not only for internal pools defined in memp_std.h)! + */ +#if !defined MEMP_MEM_MALLOC || defined __DOXYGEN__ +#define MEMP_MEM_MALLOC 0 +#endif + +/** + * MEMP_MEM_INIT==1: Force use of memset to initialize pool memory. + * Useful if pool are moved in uninitialized section of memory. This will ensure + * default values in pcbs struct are well initialized in all conditions. + */ +#if !defined MEMP_MEM_INIT || defined __DOXYGEN__ +#define MEMP_MEM_INIT 0 +#endif + +/** + * MEM_ALIGNMENT: should be set to the alignment of the CPU + * 4 byte alignment -> \#define MEM_ALIGNMENT 4 + * 2 byte alignment -> \#define MEM_ALIGNMENT 2 + */ +#if !defined MEM_ALIGNMENT || defined __DOXYGEN__ +#define MEM_ALIGNMENT 1 +#endif + +/** + * MEM_SIZE: the size of the heap memory. If the application will send + * a lot of data that needs to be copied, this should be set high. + */ +#if !defined MEM_SIZE || defined __DOXYGEN__ +#define MEM_SIZE 1600 +#endif + +/** + * MEMP_OVERFLOW_CHECK: memp overflow protection reserves a configurable + * amount of bytes before and after each memp element in every pool and fills + * it with a prominent default value. + * MEMP_OVERFLOW_CHECK == 0 no checking + * MEMP_OVERFLOW_CHECK == 1 checks each element when it is freed + * MEMP_OVERFLOW_CHECK >= 2 checks each element in every pool every time + * memp_malloc() or memp_free() is called (useful but slow!) + */ +#if !defined MEMP_OVERFLOW_CHECK || defined __DOXYGEN__ +#define MEMP_OVERFLOW_CHECK 0 +#endif + +/** + * MEMP_SANITY_CHECK==1: run a sanity check after each memp_free() to make + * sure that there are no cycles in the linked lists. + */ +#if !defined MEMP_SANITY_CHECK || defined __DOXYGEN__ +#define MEMP_SANITY_CHECK 0 +#endif + +/** + * MEM_OVERFLOW_CHECK: mem overflow protection reserves a configurable + * amount of bytes before and after each heap allocation chunk and fills + * it with a prominent default value. + * MEM_OVERFLOW_CHECK == 0 no checking + * MEM_OVERFLOW_CHECK == 1 checks each element when it is freed + * MEM_OVERFLOW_CHECK >= 2 checks all heap elements every time + * mem_malloc() or mem_free() is called (useful but slow!) + */ +#if !defined MEM_OVERFLOW_CHECK || defined __DOXYGEN__ +#define MEM_OVERFLOW_CHECK 0 +#endif + +/** + * MEM_SANITY_CHECK==1: run a sanity check after each mem_free() to make + * sure that the linked list of heap elements is not corrupted. + */ +#if !defined MEM_SANITY_CHECK || defined __DOXYGEN__ +#define MEM_SANITY_CHECK 0 +#endif + +/** + * MEM_USE_POOLS==1: Use an alternative to malloc() by allocating from a set + * of memory pools of various sizes. When mem_malloc is called, an element of + * the smallest pool that can provide the length needed is returned. + * To use this, MEMP_USE_CUSTOM_POOLS also has to be enabled. + */ +#if !defined MEM_USE_POOLS || defined __DOXYGEN__ +#define MEM_USE_POOLS 0 +#endif + +/** + * MEM_USE_POOLS_TRY_BIGGER_POOL==1: if one malloc-pool is empty, try the next + * bigger pool - WARNING: THIS MIGHT WASTE MEMORY but it can make a system more + * reliable. */ +#if !defined MEM_USE_POOLS_TRY_BIGGER_POOL || defined __DOXYGEN__ +#define MEM_USE_POOLS_TRY_BIGGER_POOL 0 +#endif + +/** + * MEMP_USE_CUSTOM_POOLS==1: whether to include a user file lwippools.h + * that defines additional pools beyond the "standard" ones required + * by lwIP. If you set this to 1, you must have lwippools.h in your + * include path somewhere. + */ +#if !defined MEMP_USE_CUSTOM_POOLS || defined __DOXYGEN__ +#define MEMP_USE_CUSTOM_POOLS 0 +#endif + +/** + * Set this to 1 if you want to free PBUF_RAM pbufs (or call mem_free()) from + * interrupt context (or another context that doesn't allow waiting for a + * semaphore). + * If set to 1, mem_malloc will be protected by a semaphore and SYS_ARCH_PROTECT, + * while mem_free will only use SYS_ARCH_PROTECT. mem_malloc SYS_ARCH_UNPROTECTs + * with each loop so that mem_free can run. + * + * ATTENTION: As you can see from the above description, this leads to dis-/ + * enabling interrupts often, which can be slow! Also, on low memory, mem_malloc + * can need longer. + * + * If you don't want that, at least for NO_SYS=0, you can still use the following + * functions to enqueue a deallocation call which then runs in the tcpip_thread + * context: + * - pbuf_free_callback(p); + * - mem_free_callback(m); + */ +#if !defined LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT || defined __DOXYGEN__ +#define LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT 0 +#endif +/** + * @} + */ + +/* + ------------------------------------------------ + ---------- Internal Memory Pool Sizes ---------- + ------------------------------------------------ +*/ +/** + * @defgroup lwip_opts_memp Internal memory pools + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * MEMP_NUM_PBUF: the number of memp struct pbufs (used for PBUF_ROM and PBUF_REF). + * If the application sends a lot of data out of ROM (or other static memory), + * this should be set high. + */ +#if !defined MEMP_NUM_PBUF || defined __DOXYGEN__ +#define MEMP_NUM_PBUF 16 +#endif + +/** + * MEMP_NUM_RAW_PCB: Number of raw connection PCBs + * (requires the LWIP_RAW option) + */ +#if !defined MEMP_NUM_RAW_PCB || defined __DOXYGEN__ +#define MEMP_NUM_RAW_PCB 4 +#endif + +/** + * MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One + * per active UDP "connection". + * (requires the LWIP_UDP option) + */ +#if !defined MEMP_NUM_UDP_PCB || defined __DOXYGEN__ +#define MEMP_NUM_UDP_PCB 4 +#endif + +/** + * MEMP_NUM_TCP_PCB: the number of simultaneously active TCP connections. + * (requires the LWIP_TCP option) + */ +#if !defined MEMP_NUM_TCP_PCB || defined __DOXYGEN__ +#define MEMP_NUM_TCP_PCB 5 +#endif + +/** + * MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP connections. + * (requires the LWIP_TCP option) + */ +#if !defined MEMP_NUM_TCP_PCB_LISTEN || defined __DOXYGEN__ +#define MEMP_NUM_TCP_PCB_LISTEN 8 +#endif + +/** + * MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments. + * (requires the LWIP_TCP option) + */ +#if !defined MEMP_NUM_TCP_SEG || defined __DOXYGEN__ +#define MEMP_NUM_TCP_SEG 16 +#endif + +/** + * MEMP_NUM_ALTCP_PCB: the number of simultaneously active altcp layer pcbs. + * (requires the LWIP_ALTCP option) + * Connections with multiple layers require more than one altcp_pcb (e.g. TLS + * over TCP requires 2 altcp_pcbs, one for TLS and one for TCP). + */ +#if !defined MEMP_NUM_ALTCP_PCB || defined __DOXYGEN__ +#define MEMP_NUM_ALTCP_PCB MEMP_NUM_TCP_PCB +#endif + +/** + * MEMP_NUM_REASSDATA: the number of IP packets simultaneously queued for + * reassembly (whole packets, not fragments!) + */ +#if !defined MEMP_NUM_REASSDATA || defined __DOXYGEN__ +#define MEMP_NUM_REASSDATA 5 +#endif + +/** + * MEMP_NUM_FRAG_PBUF: the number of IP fragments simultaneously sent + * (fragments, not whole packets!). + * This is only used with LWIP_NETIF_TX_SINGLE_PBUF==0 and only has to be > 1 + * with DMA-enabled MACs where the packet is not yet sent when netif->output + * returns. + */ +#if !defined MEMP_NUM_FRAG_PBUF || defined __DOXYGEN__ +#define MEMP_NUM_FRAG_PBUF 15 +#endif + +/** + * MEMP_NUM_ARP_QUEUE: the number of simultaneously queued outgoing + * packets (pbufs) that are waiting for an ARP request (to resolve + * their destination address) to finish. + * (requires the ARP_QUEUEING option) + */ +#if !defined MEMP_NUM_ARP_QUEUE || defined __DOXYGEN__ +#define MEMP_NUM_ARP_QUEUE 30 +#endif + +/** + * MEMP_NUM_IGMP_GROUP: The number of multicast groups whose network interfaces + * can be members at the same time (one per netif - allsystems group -, plus one + * per netif membership). + * (requires the LWIP_IGMP option) + */ +#if !defined MEMP_NUM_IGMP_GROUP || defined __DOXYGEN__ +#define MEMP_NUM_IGMP_GROUP 8 +#endif + +/** + * The number of sys timeouts used by the core stack (not apps) + * The default number of timeouts is calculated here for all enabled modules. + */ +#define LWIP_NUM_SYS_TIMEOUT_INTERNAL (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_NUM_TIMEOUTS + (LWIP_IPV6 * (1 + LWIP_IPV6_REASS + LWIP_IPV6_MLD))) + +/** + * MEMP_NUM_SYS_TIMEOUT: the number of simultaneously active timeouts. + * The default number of timeouts is calculated here for all enabled modules. + * The formula expects settings to be either '0' or '1'. + */ +#if !defined MEMP_NUM_SYS_TIMEOUT || defined __DOXYGEN__ +#define MEMP_NUM_SYS_TIMEOUT LWIP_NUM_SYS_TIMEOUT_INTERNAL +#endif + +/** + * MEMP_NUM_NETBUF: the number of struct netbufs. + * (only needed if you use the sequential API, like api_lib.c) + */ +#if !defined MEMP_NUM_NETBUF || defined __DOXYGEN__ +#define MEMP_NUM_NETBUF 2 +#endif + +/** + * MEMP_NUM_NETCONN: the number of struct netconns. + * (only needed if you use the sequential API, like api_lib.c) + */ +#if !defined MEMP_NUM_NETCONN || defined __DOXYGEN__ +#define MEMP_NUM_NETCONN 4 +#endif + +/** + * MEMP_NUM_SELECT_CB: the number of struct lwip_select_cb. + * (Only needed if you have LWIP_MPU_COMPATIBLE==1 and use the socket API. + * In that case, you need one per thread calling lwip_select.) + */ +#if !defined MEMP_NUM_SELECT_CB || defined __DOXYGEN__ +#define MEMP_NUM_SELECT_CB 4 +#endif + +/** + * MEMP_NUM_TCPIP_MSG_API: the number of struct tcpip_msg, which are used + * for callback/timeout API communication. + * (only needed if you use tcpip.c) + */ +#if !defined MEMP_NUM_TCPIP_MSG_API || defined __DOXYGEN__ +#define MEMP_NUM_TCPIP_MSG_API 8 +#endif + +/** + * MEMP_NUM_TCPIP_MSG_INPKT: the number of struct tcpip_msg, which are used + * for incoming packets. + * (only needed if you use tcpip.c) + */ +#if !defined MEMP_NUM_TCPIP_MSG_INPKT || defined __DOXYGEN__ +#define MEMP_NUM_TCPIP_MSG_INPKT 8 +#endif + +/** + * MEMP_NUM_NETDB: the number of concurrently running lwip_addrinfo() calls + * (before freeing the corresponding memory using lwip_freeaddrinfo()). + */ +#if !defined MEMP_NUM_NETDB || defined __DOXYGEN__ +#define MEMP_NUM_NETDB 1 +#endif + +/** + * MEMP_NUM_LOCALHOSTLIST: the number of host entries in the local host list + * if DNS_LOCAL_HOSTLIST_IS_DYNAMIC==1. + */ +#if !defined MEMP_NUM_LOCALHOSTLIST || defined __DOXYGEN__ +#define MEMP_NUM_LOCALHOSTLIST 1 +#endif + +/** + * PBUF_POOL_SIZE: the number of buffers in the pbuf pool. + */ +#if !defined PBUF_POOL_SIZE || defined __DOXYGEN__ +#define PBUF_POOL_SIZE 16 +#endif + +/** MEMP_NUM_API_MSG: the number of concurrently active calls to various + * socket, netconn, and tcpip functions + */ +#if !defined MEMP_NUM_API_MSG || defined __DOXYGEN__ +#define MEMP_NUM_API_MSG MEMP_NUM_TCPIP_MSG_API +#endif + +/** MEMP_NUM_DNS_API_MSG: the number of concurrently active calls to netconn_gethostbyname + */ +#if !defined MEMP_NUM_DNS_API_MSG || defined __DOXYGEN__ +#define MEMP_NUM_DNS_API_MSG MEMP_NUM_TCPIP_MSG_API +#endif + +/** MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA: the number of concurrently active calls + * to getsockopt/setsockopt + */ +#if !defined MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA || defined __DOXYGEN__ +#define MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA MEMP_NUM_TCPIP_MSG_API +#endif + +/** MEMP_NUM_NETIFAPI_MSG: the number of concurrently active calls to the + * netifapi functions + */ +#if !defined MEMP_NUM_NETIFAPI_MSG || defined __DOXYGEN__ +#define MEMP_NUM_NETIFAPI_MSG MEMP_NUM_TCPIP_MSG_API +#endif +/** + * @} + */ + +/* + --------------------------------- + ---------- ARP options ---------- + --------------------------------- +*/ +/** + * @defgroup lwip_opts_arp ARP + * @ingroup lwip_opts_ipv4 + * @{ + */ +/** + * LWIP_ARP==1: Enable ARP functionality. + */ +#if !defined LWIP_ARP || defined __DOXYGEN__ +#define LWIP_ARP 1 +#endif + +/** + * ARP_TABLE_SIZE: Number of active MAC-IP address pairs cached. + */ +#if !defined ARP_TABLE_SIZE || defined __DOXYGEN__ +#define ARP_TABLE_SIZE 10 +#endif + +/** the time an ARP entry stays valid after its last update, + * for ARP_TMR_INTERVAL = 1000, this is + * (60 * 5) seconds = 5 minutes. + */ +#if !defined ARP_MAXAGE || defined __DOXYGEN__ +#define ARP_MAXAGE 300 +#endif + +/** + * ARP_QUEUEING==1: Multiple outgoing packets are queued during hardware address + * resolution. By default, only the most recent packet is queued per IP address. + * This is sufficient for most protocols and mainly reduces TCP connection + * startup time. Set this to 1 if you know your application sends more than one + * packet in a row to an IP address that is not in the ARP cache. + */ +#if !defined ARP_QUEUEING || defined __DOXYGEN__ +#define ARP_QUEUEING 0 +#endif + +/** The maximum number of packets which may be queued for each + * unresolved address by other network layers. Defaults to 3, 0 means disabled. + * Old packets are dropped, new packets are queued. + */ +#if !defined ARP_QUEUE_LEN || defined __DOXYGEN__ +#define ARP_QUEUE_LEN 3 +#endif + +/** + * ETHARP_SUPPORT_VLAN==1: support receiving and sending ethernet packets with + * VLAN header. See the description of LWIP_HOOK_VLAN_CHECK and + * LWIP_HOOK_VLAN_SET hooks to check/set VLAN headers. + * Additionally, you can define ETHARP_VLAN_CHECK to an u16_t VLAN ID to check. + * If ETHARP_VLAN_CHECK is defined, only VLAN-traffic for this VLAN is accepted. + * If ETHARP_VLAN_CHECK is not defined, all traffic is accepted. + * Alternatively, define a function/define ETHARP_VLAN_CHECK_FN(eth_hdr, vlan) + * that returns 1 to accept a packet or 0 to drop a packet. + */ +#if !defined ETHARP_SUPPORT_VLAN || defined __DOXYGEN__ +#define ETHARP_SUPPORT_VLAN 0 +#endif + +/** LWIP_ETHERNET==1: enable ethernet support even though ARP might be disabled + */ +#if !defined LWIP_ETHERNET || defined __DOXYGEN__ +#define LWIP_ETHERNET LWIP_ARP +#endif + +/** ETH_PAD_SIZE: number of bytes added before the ethernet header to ensure + * alignment of payload after that header. Since the header is 14 bytes long, + * without this padding e.g. addresses in the IP header will not be aligned + * on a 32-bit boundary, so setting this to 2 can speed up 32-bit-platforms. + */ +#if !defined ETH_PAD_SIZE || defined __DOXYGEN__ +#define ETH_PAD_SIZE 0 +#endif + +/** ETHARP_SUPPORT_STATIC_ENTRIES==1: enable code to support static ARP table + * entries (using etharp_add_static_entry/etharp_remove_static_entry). + */ +#if !defined ETHARP_SUPPORT_STATIC_ENTRIES || defined __DOXYGEN__ +#define ETHARP_SUPPORT_STATIC_ENTRIES 0 +#endif + +/** ETHARP_TABLE_MATCH_NETIF==1: Match netif for ARP table entries. + * If disabled, duplicate IP address on multiple netifs are not supported + * (but this should only occur for AutoIP). + */ +#if !defined ETHARP_TABLE_MATCH_NETIF || defined __DOXYGEN__ +#define ETHARP_TABLE_MATCH_NETIF !LWIP_SINGLE_NETIF +#endif +/** + * @} + */ + +/* + -------------------------------- + ---------- IP options ---------- + -------------------------------- +*/ +/** + * @defgroup lwip_opts_ipv4 IPv4 + * @ingroup lwip_opts + * @{ + */ +/** + * LWIP_IPV4==1: Enable IPv4 + */ +#if !defined LWIP_IPV4 || defined __DOXYGEN__ +#define LWIP_IPV4 1 +#endif + +/** + * IP_FORWARD==1: Enables the ability to forward IP packets across network + * interfaces. If you are going to run lwIP on a device with only one network + * interface, define this to 0. + */ +#if !defined IP_FORWARD || defined __DOXYGEN__ +#define IP_FORWARD 0 +#endif + +/** + * IP_REASSEMBLY==1: Reassemble incoming fragmented IP packets. Note that + * this option does not affect outgoing packet sizes, which can be controlled + * via IP_FRAG. + */ +#if !defined IP_REASSEMBLY || defined __DOXYGEN__ +#define IP_REASSEMBLY 1 +#endif + +/** + * IP_FRAG==1: Fragment outgoing IP packets if their size exceeds MTU. Note + * that this option does not affect incoming packet sizes, which can be + * controlled via IP_REASSEMBLY. + */ +#if !defined IP_FRAG || defined __DOXYGEN__ +#define IP_FRAG 1 +#endif + +#if !LWIP_IPV4 +/* disable IPv4 extensions when IPv4 is disabled */ +#undef IP_FORWARD +#define IP_FORWARD 0 +#undef IP_REASSEMBLY +#define IP_REASSEMBLY 0 +#undef IP_FRAG +#define IP_FRAG 0 +#endif /* !LWIP_IPV4 */ + +/** + * IP_OPTIONS_ALLOWED: Defines the behavior for IP options. + * IP_OPTIONS_ALLOWED==0: All packets with IP options are dropped. + * IP_OPTIONS_ALLOWED==1: IP options are allowed (but not parsed). + */ +#if !defined IP_OPTIONS_ALLOWED || defined __DOXYGEN__ +#define IP_OPTIONS_ALLOWED 1 +#endif + +/** + * IP_REASS_MAXAGE: Maximum time (in multiples of IP_TMR_INTERVAL - so seconds, normally) + * a fragmented IP packet waits for all fragments to arrive. If not all fragments arrived + * in this time, the whole packet is discarded. + */ +#if !defined IP_REASS_MAXAGE || defined __DOXYGEN__ +#define IP_REASS_MAXAGE 15 +#endif + +/** + * IP_REASS_MAX_PBUFS: Total maximum amount of pbufs waiting to be reassembled. + * Since the received pbufs are enqueued, be sure to configure + * PBUF_POOL_SIZE > IP_REASS_MAX_PBUFS so that the stack is still able to receive + * packets even if the maximum amount of fragments is enqueued for reassembly! + * When IPv4 *and* IPv6 are enabled, this even changes to + * (PBUF_POOL_SIZE > 2 * IP_REASS_MAX_PBUFS)! + */ +#if !defined IP_REASS_MAX_PBUFS || defined __DOXYGEN__ +#define IP_REASS_MAX_PBUFS 10 +#endif + +/** + * IP_DEFAULT_TTL: Default value for Time-To-Live used by transport layers. + */ +#if !defined IP_DEFAULT_TTL || defined __DOXYGEN__ +#define IP_DEFAULT_TTL 255 +#endif + +/** + * IP_SOF_BROADCAST=1: Use the SOF_BROADCAST field to enable broadcast + * filter per pcb on udp and raw send operations. To enable broadcast filter + * on recv operations, you also have to set IP_SOF_BROADCAST_RECV=1. + */ +#if !defined IP_SOF_BROADCAST || defined __DOXYGEN__ +#define IP_SOF_BROADCAST 0 +#endif + +/** + * IP_SOF_BROADCAST_RECV (requires IP_SOF_BROADCAST=1) enable the broadcast + * filter on recv operations. + */ +#if !defined IP_SOF_BROADCAST_RECV || defined __DOXYGEN__ +#define IP_SOF_BROADCAST_RECV 0 +#endif + +/** + * IP_FORWARD_ALLOW_TX_ON_RX_NETIF==1: allow ip_forward() to send packets back + * out on the netif where it was received. This should only be used for + * wireless networks. + * ATTENTION: When this is 1, make sure your netif driver correctly marks incoming + * link-layer-broadcast/multicast packets as such using the corresponding pbuf flags! + */ +#if !defined IP_FORWARD_ALLOW_TX_ON_RX_NETIF || defined __DOXYGEN__ +#define IP_FORWARD_ALLOW_TX_ON_RX_NETIF 0 +#endif +/** + * @} + */ + +/* + ---------------------------------- + ---------- ICMP options ---------- + ---------------------------------- +*/ +/** + * @defgroup lwip_opts_icmp ICMP + * @ingroup lwip_opts_ipv4 + * @{ + */ +/** + * LWIP_ICMP==1: Enable ICMP module inside the IP stack. + * Be careful, disable that make your product non-compliant to RFC1122 + */ +#if !defined LWIP_ICMP || defined __DOXYGEN__ +#define LWIP_ICMP 1 +#endif + +/** + * ICMP_TTL: Default value for Time-To-Live used by ICMP packets. + */ +#if !defined ICMP_TTL || defined __DOXYGEN__ +#define ICMP_TTL IP_DEFAULT_TTL +#endif + +/** + * LWIP_BROADCAST_PING==1: respond to broadcast pings (default is unicast only) + */ +#if !defined LWIP_BROADCAST_PING || defined __DOXYGEN__ +#define LWIP_BROADCAST_PING 0 +#endif + +/** + * LWIP_MULTICAST_PING==1: respond to multicast pings (default is unicast only) + */ +#if !defined LWIP_MULTICAST_PING || defined __DOXYGEN__ +#define LWIP_MULTICAST_PING 0 +#endif +/** + * @} + */ + +/* + --------------------------------- + ---------- RAW options ---------- + --------------------------------- +*/ +/** + * @defgroup lwip_opts_raw RAW + * @ingroup lwip_opts_callback + * @{ + */ +/** + * LWIP_RAW==1: Enable application layer to hook into the IP layer itself. + */ +#if !defined LWIP_RAW || defined __DOXYGEN__ +#define LWIP_RAW 0 +#endif + +/** + * LWIP_RAW==1: Enable application layer to hook into the IP layer itself. + */ +#if !defined RAW_TTL || defined __DOXYGEN__ +#define RAW_TTL IP_DEFAULT_TTL +#endif +/** + * @} + */ + +/* + ---------------------------------- + ---------- DHCP options ---------- + ---------------------------------- +*/ +/** + * @defgroup lwip_opts_dhcp DHCP + * @ingroup lwip_opts_ipv4 + * @{ + */ +/** + * LWIP_DHCP==1: Enable DHCP module. + */ +#if !defined LWIP_DHCP || defined __DOXYGEN__ +#define LWIP_DHCP 0 +#endif +#if !LWIP_IPV4 +/* disable DHCP when IPv4 is disabled */ +#undef LWIP_DHCP +#define LWIP_DHCP 0 +#endif /* !LWIP_IPV4 */ + +/** + * DHCP_DOES_ARP_CHECK==1: Do an ARP check on the offered address. + */ +#if !defined DHCP_DOES_ARP_CHECK || defined __DOXYGEN__ +#define DHCP_DOES_ARP_CHECK (LWIP_DHCP && LWIP_ARP) +#endif + +/** + * LWIP_DHCP_BOOTP_FILE==1: Store offered_si_addr and boot_file_name. + */ +#if !defined LWIP_DHCP_BOOTP_FILE || defined __DOXYGEN__ +#define LWIP_DHCP_BOOTP_FILE 0 +#endif + +/** + * LWIP_DHCP_GETS_NTP==1: Request NTP servers with discover/select. For each + * response packet, an callback is called, which has to be provided by the port: + * void dhcp_set_ntp_servers(u8_t num_ntp_servers, ip_addr_t* ntp_server_addrs); +*/ +#if !defined LWIP_DHCP_GET_NTP_SRV || defined __DOXYGEN__ +#define LWIP_DHCP_GET_NTP_SRV 0 +#endif + +/** + * The maximum of NTP servers requested + */ +#if !defined LWIP_DHCP_MAX_NTP_SERVERS || defined __DOXYGEN__ +#define LWIP_DHCP_MAX_NTP_SERVERS 1 +#endif + +/** + * LWIP_DHCP_MAX_DNS_SERVERS > 0: Request DNS servers with discover/select. + * DNS servers received in the response are passed to DNS via @ref dns_setserver() + * (up to the maximum limit defined here). + */ +#if !defined LWIP_DHCP_MAX_DNS_SERVERS || defined __DOXYGEN__ +#define LWIP_DHCP_MAX_DNS_SERVERS DNS_MAX_SERVERS +#endif +/** + * @} + */ + +/* + ------------------------------------ + ---------- AUTOIP options ---------- + ------------------------------------ +*/ +/** + * @defgroup lwip_opts_autoip AUTOIP + * @ingroup lwip_opts_ipv4 + * @{ + */ +/** + * LWIP_AUTOIP==1: Enable AUTOIP module. + */ +#if !defined LWIP_AUTOIP || defined __DOXYGEN__ +#define LWIP_AUTOIP 0 +#endif +#if !LWIP_IPV4 +/* disable AUTOIP when IPv4 is disabled */ +#undef LWIP_AUTOIP +#define LWIP_AUTOIP 0 +#endif /* !LWIP_IPV4 */ + +/** + * LWIP_DHCP_AUTOIP_COOP==1: Allow DHCP and AUTOIP to be both enabled on + * the same interface at the same time. + */ +#if !defined LWIP_DHCP_AUTOIP_COOP || defined __DOXYGEN__ +#define LWIP_DHCP_AUTOIP_COOP 0 +#endif + +/** + * LWIP_DHCP_AUTOIP_COOP_TRIES: Set to the number of DHCP DISCOVER probes + * that should be sent before falling back on AUTOIP (the DHCP client keeps + * running in this case). This can be set as low as 1 to get an AutoIP address + * very quickly, but you should be prepared to handle a changing IP address + * when DHCP overrides AutoIP. + */ +#if !defined LWIP_DHCP_AUTOIP_COOP_TRIES || defined __DOXYGEN__ +#define LWIP_DHCP_AUTOIP_COOP_TRIES 9 +#endif +/** + * @} + */ + +/* + ---------------------------------- + ----- SNMP MIB2 support ----- + ---------------------------------- +*/ +/** + * @defgroup lwip_opts_mib2 SNMP MIB2 callbacks + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * LWIP_MIB2_CALLBACKS==1: Turn on SNMP MIB2 callbacks. + * Turn this on to get callbacks needed to implement MIB2. + * Usually MIB2_STATS should be enabled, too. + */ +#if !defined LWIP_MIB2_CALLBACKS || defined __DOXYGEN__ +#define LWIP_MIB2_CALLBACKS 0 +#endif +/** + * @} + */ + +/* + ---------------------------------- + -------- Multicast options ------- + ---------------------------------- +*/ +/** + * @defgroup lwip_opts_multicast Multicast + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * LWIP_MULTICAST_TX_OPTIONS==1: Enable multicast TX support like the socket options + * IP_MULTICAST_TTL/IP_MULTICAST_IF/IP_MULTICAST_LOOP, as well as (currently only) + * core support for the corresponding IPv6 options. + */ +#if !defined LWIP_MULTICAST_TX_OPTIONS || defined __DOXYGEN__ +#define LWIP_MULTICAST_TX_OPTIONS ((LWIP_IGMP || LWIP_IPV6_MLD) && (LWIP_UDP || LWIP_RAW)) +#endif +/** + * @} + */ + +/* + ---------------------------------- + ---------- IGMP options ---------- + ---------------------------------- +*/ +/** + * @defgroup lwip_opts_igmp IGMP + * @ingroup lwip_opts_ipv4 + * @{ + */ +/** + * LWIP_IGMP==1: Turn on IGMP module. + */ +#if !defined LWIP_IGMP || defined __DOXYGEN__ +#define LWIP_IGMP 0 +#endif +#if !LWIP_IPV4 +#undef LWIP_IGMP +#define LWIP_IGMP 0 +#endif +/** + * @} + */ + +/* + ---------------------------------- + ---------- DNS options ----------- + ---------------------------------- +*/ +/** + * @defgroup lwip_opts_dns DNS + * @ingroup lwip_opts_callback + * @{ + */ +/** + * LWIP_DNS==1: Turn on DNS module. UDP must be available for DNS + * transport. + */ +#if !defined LWIP_DNS || defined __DOXYGEN__ +#define LWIP_DNS 0 +#endif + +/** DNS maximum number of entries to maintain locally. */ +#if !defined DNS_TABLE_SIZE || defined __DOXYGEN__ +#define DNS_TABLE_SIZE 4 +#endif + +/** DNS maximum host name length supported in the name table. */ +#if !defined DNS_MAX_NAME_LENGTH || defined __DOXYGEN__ +#define DNS_MAX_NAME_LENGTH 256 +#endif + +/** The maximum of DNS servers + * The first server can be initialized automatically by defining + * DNS_SERVER_ADDRESS(ipaddr), where 'ipaddr' is an 'ip_addr_t*' + */ +#if !defined DNS_MAX_SERVERS || defined __DOXYGEN__ +#define DNS_MAX_SERVERS 2 +#endif + +/** DNS maximum number of retries when asking for a name, before "timeout". */ +#if !defined DNS_MAX_RETRIES || defined __DOXYGEN__ +#define DNS_MAX_RETRIES 4 +#endif + +/** DNS do a name checking between the query and the response. */ +#if !defined DNS_DOES_NAME_CHECK || defined __DOXYGEN__ +#define DNS_DOES_NAME_CHECK 1 +#endif + +/** LWIP_DNS_SECURE: controls the security level of the DNS implementation + * Use all DNS security features by default. + * This is overridable but should only be needed by very small targets + * or when using against non standard DNS servers. */ +#if !defined LWIP_DNS_SECURE || defined __DOXYGEN__ +#define LWIP_DNS_SECURE (LWIP_DNS_SECURE_RAND_XID | LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING | LWIP_DNS_SECURE_RAND_SRC_PORT) +#endif + +/* A list of DNS security features follows */ +#define LWIP_DNS_SECURE_RAND_XID 1 +#define LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING 2 +#define LWIP_DNS_SECURE_RAND_SRC_PORT 4 + +/** DNS_LOCAL_HOSTLIST: Implements a local host-to-address list. If enabled, you have to define an initializer: + * \#define DNS_LOCAL_HOSTLIST_INIT {DNS_LOCAL_HOSTLIST_ELEM("host_ip4", IPADDR4_INIT_BYTES(1,2,3,4)), \ + * DNS_LOCAL_HOSTLIST_ELEM("host_ip6", IPADDR6_INIT_HOST(123, 234, 345, 456)} + * + * Instead, you can also use an external function: + * \#define DNS_LOOKUP_LOCAL_EXTERN(x) extern err_t my_lookup_function(const char *name, ip_addr_t *addr, u8_t dns_addrtype) + * that looks up the IP address and returns ERR_OK if found (LWIP_DNS_ADDRTYPE_xxx is passed in dns_addrtype). + */ +#if !defined DNS_LOCAL_HOSTLIST || defined __DOXYGEN__ +#define DNS_LOCAL_HOSTLIST 0 +#endif /* DNS_LOCAL_HOSTLIST */ + +/** If this is turned on, the local host-list can be dynamically changed + * at runtime. */ +#if !defined DNS_LOCAL_HOSTLIST_IS_DYNAMIC || defined __DOXYGEN__ +#define DNS_LOCAL_HOSTLIST_IS_DYNAMIC 0 +#endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ + +/** Set this to 1 to enable querying ".local" names via mDNS + * using a One-Shot Multicast DNS Query */ +#if !defined LWIP_DNS_SUPPORT_MDNS_QUERIES || defined __DOXYGEN__ +#define LWIP_DNS_SUPPORT_MDNS_QUERIES 0 +#endif +/** + * @} + */ + +/* + --------------------------------- + ---------- UDP options ---------- + --------------------------------- +*/ +/** + * @defgroup lwip_opts_udp UDP + * @ingroup lwip_opts_callback + * @{ + */ +/** + * LWIP_UDP==1: Turn on UDP. + */ +#if !defined LWIP_UDP || defined __DOXYGEN__ +#define LWIP_UDP 1 +#endif + +/** + * LWIP_UDPLITE==1: Turn on UDP-Lite. (Requires LWIP_UDP) + */ +#if !defined LWIP_UDPLITE || defined __DOXYGEN__ +#define LWIP_UDPLITE 0 +#endif + +/** + * UDP_TTL: Default Time-To-Live value. + */ +#if !defined UDP_TTL || defined __DOXYGEN__ +#define UDP_TTL IP_DEFAULT_TTL +#endif + +/** + * LWIP_NETBUF_RECVINFO==1: append destination addr and port to every netbuf. + */ +#if !defined LWIP_NETBUF_RECVINFO || defined __DOXYGEN__ +#define LWIP_NETBUF_RECVINFO 0 +#endif +/** + * @} + */ + +/* + --------------------------------- + ---------- TCP options ---------- + --------------------------------- +*/ +/** + * @defgroup lwip_opts_tcp TCP + * @ingroup lwip_opts_callback + * @{ + */ +/** + * LWIP_TCP==1: Turn on TCP. + */ +#if !defined LWIP_TCP || defined __DOXYGEN__ +#define LWIP_TCP 1 +#endif + +/** + * TCP_TTL: Default Time-To-Live value. + */ +#if !defined TCP_TTL || defined __DOXYGEN__ +#define TCP_TTL IP_DEFAULT_TTL +#endif + +/** + * TCP_WND: The size of a TCP window. This must be at least + * (2 * TCP_MSS) for things to work well. + * ATTENTION: when using TCP_RCV_SCALE, TCP_WND is the total size + * with scaling applied. Maximum window value in the TCP header + * will be TCP_WND >> TCP_RCV_SCALE + */ +#if !defined TCP_WND || defined __DOXYGEN__ +#define TCP_WND (4 * TCP_MSS) +#endif + +/** + * TCP_MAXRTX: Maximum number of retransmissions of data segments. + */ +#if !defined TCP_MAXRTX || defined __DOXYGEN__ +#define TCP_MAXRTX 12 +#endif + +/** + * TCP_SYNMAXRTX: Maximum number of retransmissions of SYN segments. + */ +#if !defined TCP_SYNMAXRTX || defined __DOXYGEN__ +#define TCP_SYNMAXRTX 6 +#endif + +/** + * TCP_QUEUE_OOSEQ==1: TCP will queue segments that arrive out of order. + * Define to 0 if your device is low on memory. + */ +#if !defined TCP_QUEUE_OOSEQ || defined __DOXYGEN__ +#define TCP_QUEUE_OOSEQ LWIP_TCP +#endif + +/** + * LWIP_TCP_SACK_OUT==1: TCP will support sending selective acknowledgements (SACKs). + */ +#if !defined LWIP_TCP_SACK_OUT || defined __DOXYGEN__ +#define LWIP_TCP_SACK_OUT 0 +#endif + +/** + * LWIP_TCP_MAX_SACK_NUM: The maximum number of SACK values to include in TCP segments. + * Must be at least 1, but is only used if LWIP_TCP_SACK_OUT is enabled. + * NOTE: Even though we never send more than 3 or 4 SACK ranges in a single segment + * (depending on other options), setting this option to values greater than 4 is not pointless. + * This is basically the max number of SACK ranges we want to keep track of. + * As new data is delivered, some of the SACK ranges may be removed or merged. + * In that case some of those older SACK ranges may be used again. + * The amount of memory used to store SACK ranges is LWIP_TCP_MAX_SACK_NUM * 8 bytes for each TCP PCB. + */ +#if !defined LWIP_TCP_MAX_SACK_NUM || defined __DOXYGEN__ +#define LWIP_TCP_MAX_SACK_NUM 4 +#endif + +/** + * TCP_MSS: TCP Maximum segment size. (default is 536, a conservative default, + * you might want to increase this.) + * For the receive side, this MSS is advertised to the remote side + * when opening a connection. For the transmit size, this MSS sets + * an upper limit on the MSS advertised by the remote host. + */ +#if !defined TCP_MSS || defined __DOXYGEN__ +#define TCP_MSS 536 +#endif + +/** + * TCP_CALCULATE_EFF_SEND_MSS: "The maximum size of a segment that TCP really + * sends, the 'effective send MSS,' MUST be the smaller of the send MSS (which + * reflects the available reassembly buffer size at the remote host) and the + * largest size permitted by the IP layer" (RFC 1122) + * Setting this to 1 enables code that checks TCP_MSS against the MTU of the + * netif used for a connection and limits the MSS if it would be too big otherwise. + */ +#if !defined TCP_CALCULATE_EFF_SEND_MSS || defined __DOXYGEN__ +#define TCP_CALCULATE_EFF_SEND_MSS 1 +#endif + + +/** + * TCP_SND_BUF: TCP sender buffer space (bytes). + * To achieve good performance, this should be at least 2 * TCP_MSS. + */ +#if !defined TCP_SND_BUF || defined __DOXYGEN__ +#define TCP_SND_BUF (2 * TCP_MSS) +#endif + +/** + * TCP_SND_QUEUELEN: TCP sender buffer space (pbufs). This must be at least + * as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work. + */ +#if !defined TCP_SND_QUEUELEN || defined __DOXYGEN__ +#define TCP_SND_QUEUELEN ((4 * (TCP_SND_BUF) + (TCP_MSS - 1))/(TCP_MSS)) +#endif + +/** + * TCP_SNDLOWAT: TCP writable space (bytes). This must be less than + * TCP_SND_BUF. It is the amount of space which must be available in the + * TCP snd_buf for select to return writable (combined with TCP_SNDQUEUELOWAT). + */ +#if !defined TCP_SNDLOWAT || defined __DOXYGEN__ +#define TCP_SNDLOWAT LWIP_MIN(LWIP_MAX(((TCP_SND_BUF)/2), (2 * TCP_MSS) + 1), (TCP_SND_BUF) - 1) +#endif + +/** + * TCP_SNDQUEUELOWAT: TCP writable bufs (pbuf count). This must be less + * than TCP_SND_QUEUELEN. If the number of pbufs queued on a pcb drops below + * this number, select returns writable (combined with TCP_SNDLOWAT). + */ +#if !defined TCP_SNDQUEUELOWAT || defined __DOXYGEN__ +#define TCP_SNDQUEUELOWAT LWIP_MAX(((TCP_SND_QUEUELEN)/2), 5) +#endif + +/** + * TCP_OOSEQ_MAX_BYTES: The default maximum number of bytes queued on ooseq per + * pcb if TCP_OOSEQ_BYTES_LIMIT is not defined. Default is 0 (no limit). + * Only valid for TCP_QUEUE_OOSEQ==1. + */ +#if !defined TCP_OOSEQ_MAX_BYTES || defined __DOXYGEN__ +#define TCP_OOSEQ_MAX_BYTES 0 +#endif + +/** + * TCP_OOSEQ_BYTES_LIMIT(pcb): Return the maximum number of bytes to be queued + * on ooseq per pcb, given the pcb. Only valid for TCP_QUEUE_OOSEQ==1 && + * TCP_OOSEQ_MAX_BYTES==1. + * Use this to override TCP_OOSEQ_MAX_BYTES to a dynamic value per pcb. + */ +#if !defined TCP_OOSEQ_BYTES_LIMIT +#if TCP_OOSEQ_MAX_BYTES +#define TCP_OOSEQ_BYTES_LIMIT(pcb) TCP_OOSEQ_MAX_BYTES +#elif defined __DOXYGEN__ +#define TCP_OOSEQ_BYTES_LIMIT(pcb) +#endif +#endif + +/** + * TCP_OOSEQ_MAX_PBUFS: The default maximum number of pbufs queued on ooseq per + * pcb if TCP_OOSEQ_BYTES_LIMIT is not defined. Default is 0 (no limit). + * Only valid for TCP_QUEUE_OOSEQ==1. + */ +#if !defined TCP_OOSEQ_MAX_PBUFS || defined __DOXYGEN__ +#define TCP_OOSEQ_MAX_PBUFS 0 +#endif + +/** + * TCP_OOSEQ_PBUFS_LIMIT(pcb): Return the maximum number of pbufs to be queued + * on ooseq per pcb, given the pcb. Only valid for TCP_QUEUE_OOSEQ==1 && + * TCP_OOSEQ_MAX_PBUFS==1. + * Use this to override TCP_OOSEQ_MAX_PBUFS to a dynamic value per pcb. + */ +#if !defined TCP_OOSEQ_PBUFS_LIMIT +#if TCP_OOSEQ_MAX_PBUFS +#define TCP_OOSEQ_PBUFS_LIMIT(pcb) TCP_OOSEQ_MAX_PBUFS +#elif defined __DOXYGEN__ +#define TCP_OOSEQ_PBUFS_LIMIT(pcb) +#endif +#endif + +/** + * TCP_LISTEN_BACKLOG: Enable the backlog option for tcp listen pcb. + */ +#if !defined TCP_LISTEN_BACKLOG || defined __DOXYGEN__ +#define TCP_LISTEN_BACKLOG 0 +#endif + +/** + * The maximum allowed backlog for TCP listen netconns. + * This backlog is used unless another is explicitly specified. + * 0xff is the maximum (u8_t). + */ +#if !defined TCP_DEFAULT_LISTEN_BACKLOG || defined __DOXYGEN__ +#define TCP_DEFAULT_LISTEN_BACKLOG 0xff +#endif + +/** + * TCP_OVERSIZE: The maximum number of bytes that tcp_write may + * allocate ahead of time in an attempt to create shorter pbuf chains + * for transmission. The meaningful range is 0 to TCP_MSS. Some + * suggested values are: + * + * 0: Disable oversized allocation. Each tcp_write() allocates a new + pbuf (old behaviour). + * 1: Allocate size-aligned pbufs with minimal excess. Use this if your + * scatter-gather DMA requires aligned fragments. + * 128: Limit the pbuf/memory overhead to 20%. + * TCP_MSS: Try to create unfragmented TCP packets. + * TCP_MSS/4: Try to create 4 fragments or less per TCP packet. + */ +#if !defined TCP_OVERSIZE || defined __DOXYGEN__ +#define TCP_OVERSIZE TCP_MSS +#endif + +/** + * LWIP_TCP_TIMESTAMPS==1: support the TCP timestamp option. + * The timestamp option is currently only used to help remote hosts, it is not + * really used locally. Therefore, it is only enabled when a TS option is + * received in the initial SYN packet from a remote host. + */ +#if !defined LWIP_TCP_TIMESTAMPS || defined __DOXYGEN__ +#define LWIP_TCP_TIMESTAMPS 0 +#endif + +/** + * TCP_WND_UPDATE_THRESHOLD: difference in window to trigger an + * explicit window update + */ +#if !defined TCP_WND_UPDATE_THRESHOLD || defined __DOXYGEN__ +#define TCP_WND_UPDATE_THRESHOLD LWIP_MIN((TCP_WND / 4), (TCP_MSS * 4)) +#endif + +/** + * LWIP_EVENT_API and LWIP_CALLBACK_API: Only one of these should be set to 1. + * LWIP_EVENT_API==1: The user defines lwip_tcp_event() to receive all + * events (accept, sent, etc) that happen in the system. + * LWIP_CALLBACK_API==1: The PCB callback function is called directly + * for the event. This is the default. + */ +#if !defined(LWIP_EVENT_API) && !defined(LWIP_CALLBACK_API) || defined __DOXYGEN__ +#define LWIP_EVENT_API 0 +#define LWIP_CALLBACK_API 1 +#else +#ifndef LWIP_EVENT_API +#define LWIP_EVENT_API 0 +#endif +#ifndef LWIP_CALLBACK_API +#define LWIP_CALLBACK_API 0 +#endif +#endif + +/** + * LWIP_WND_SCALE and TCP_RCV_SCALE: + * Set LWIP_WND_SCALE to 1 to enable window scaling. + * Set TCP_RCV_SCALE to the desired scaling factor (shift count in the + * range of [0..14]). + * When LWIP_WND_SCALE is enabled but TCP_RCV_SCALE is 0, we can use a large + * send window while having a small receive window only. + */ +#if !defined LWIP_WND_SCALE || defined __DOXYGEN__ +#define LWIP_WND_SCALE 0 +#define TCP_RCV_SCALE 0 +#endif + +/** + * LWIP_TCP_PCB_NUM_EXT_ARGS: + * When this is > 0, every tcp pcb (including listen pcb) includes a number of + * additional argument entries in an array (see tcp_ext_arg_alloc_id) + */ +#if !defined LWIP_TCP_PCB_NUM_EXT_ARGS || defined __DOXYGEN__ +#define LWIP_TCP_PCB_NUM_EXT_ARGS 0 +#endif + +/** LWIP_ALTCP==1: enable the altcp API. + * altcp is an abstraction layer that prevents applications linking against the + * tcp.h functions but provides the same functionality. It is used to e.g. add + * SSL/TLS or proxy-connect support to an application written for the tcp callback + * API without that application knowing the protocol details. + * + * With LWIP_ALTCP==0, applications written against the altcp API can still be + * compiled but are directly linked against the tcp.h callback API and then + * cannot use layered protocols. + * + * See @ref altcp_api + */ +#if !defined LWIP_ALTCP || defined __DOXYGEN__ +#define LWIP_ALTCP 0 +#endif + +/** LWIP_ALTCP_TLS==1: enable TLS support for altcp API. + * This needs a port of the functions in altcp_tls.h to a TLS library. + * A port to ARM mbedtls is provided with lwIP, see apps/altcp_tls/ directory + * and LWIP_ALTCP_TLS_MBEDTLS option. + */ +#if !defined LWIP_ALTCP_TLS || defined __DOXYGEN__ +#define LWIP_ALTCP_TLS 0 +#endif + +/** + * @} + */ + +/* + ---------------------------------- + ---------- Pbuf options ---------- + ---------------------------------- +*/ +/** + * @defgroup lwip_opts_pbuf PBUF + * @ingroup lwip_opts + * @{ + */ +/** + * PBUF_LINK_HLEN: the number of bytes that should be allocated for a + * link level header. The default is 14, the standard value for + * Ethernet. + */ +#if !defined PBUF_LINK_HLEN || defined __DOXYGEN__ +#if defined LWIP_HOOK_VLAN_SET && !defined __DOXYGEN__ +#define PBUF_LINK_HLEN (18 + ETH_PAD_SIZE) +#else /* LWIP_HOOK_VLAN_SET */ +#define PBUF_LINK_HLEN (14 + ETH_PAD_SIZE) +#endif /* LWIP_HOOK_VLAN_SET */ +#endif + +/** + * PBUF_LINK_ENCAPSULATION_HLEN: the number of bytes that should be allocated + * for an additional encapsulation header before ethernet headers (e.g. 802.11) + */ +#if !defined PBUF_LINK_ENCAPSULATION_HLEN || defined __DOXYGEN__ +#define PBUF_LINK_ENCAPSULATION_HLEN 0 +#endif + +/** + * PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. The default is + * designed to accommodate single full size TCP frame in one pbuf, including + * TCP_MSS, IP header, and link header. + */ +#if !defined PBUF_POOL_BUFSIZE || defined __DOXYGEN__ +#define PBUF_POOL_BUFSIZE LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_ENCAPSULATION_HLEN+PBUF_LINK_HLEN) +#endif + +/** + * LWIP_PBUF_REF_T: Refcount type in pbuf. + * Default width of u8_t can be increased if 255 refs are not enough for you. + */ +#if !defined LWIP_PBUF_REF_T || defined __DOXYGEN__ +#define LWIP_PBUF_REF_T u8_t +#endif +/** + * @} + */ + +/* + ------------------------------------------------ + ---------- Network Interfaces options ---------- + ------------------------------------------------ +*/ +/** + * @defgroup lwip_opts_netif NETIF + * @ingroup lwip_opts + * @{ + */ +/** + * LWIP_SINGLE_NETIF==1: use a single netif only. This is the common case for + * small real-life targets. Some code like routing etc. can be left out. + */ +#if !defined LWIP_SINGLE_NETIF || defined __DOXYGEN__ +#define LWIP_SINGLE_NETIF 0 +#endif + +/** + * LWIP_NETIF_HOSTNAME==1: use DHCP_OPTION_HOSTNAME with netif's hostname + * field. + */ +#if !defined LWIP_NETIF_HOSTNAME || defined __DOXYGEN__ +#define LWIP_NETIF_HOSTNAME 0 +#endif + +/** + * LWIP_NETIF_API==1: Support netif api (in netifapi.c) + */ +#if !defined LWIP_NETIF_API || defined __DOXYGEN__ +#define LWIP_NETIF_API 0 +#endif + +/** + * LWIP_NETIF_STATUS_CALLBACK==1: Support a callback function whenever an interface + * changes its up/down status (i.e., due to DHCP IP acquisition) + */ +#if !defined LWIP_NETIF_STATUS_CALLBACK || defined __DOXYGEN__ +#define LWIP_NETIF_STATUS_CALLBACK 0 +#endif + +/** + * LWIP_NETIF_EXT_STATUS_CALLBACK==1: Support an extended callback function + * for several netif related event that supports multiple subscribers. + * @see netif_ext_status_callback + */ +#if !defined LWIP_NETIF_EXT_STATUS_CALLBACK || defined __DOXYGEN__ +#define LWIP_NETIF_EXT_STATUS_CALLBACK 0 +#endif + +/** + * LWIP_NETIF_LINK_CALLBACK==1: Support a callback function from an interface + * whenever the link changes (i.e., link down) + */ +#if !defined LWIP_NETIF_LINK_CALLBACK || defined __DOXYGEN__ +#define LWIP_NETIF_LINK_CALLBACK 0 +#endif + +/** + * LWIP_NETIF_REMOVE_CALLBACK==1: Support a callback function that is called + * when a netif has been removed + */ +#if !defined LWIP_NETIF_REMOVE_CALLBACK || defined __DOXYGEN__ +#define LWIP_NETIF_REMOVE_CALLBACK 0 +#endif + +/** + * LWIP_NETIF_HWADDRHINT==1: Cache link-layer-address hints (e.g. table + * indices) in struct netif. TCP and UDP can make use of this to prevent + * scanning the ARP table for every sent packet. While this is faster for big + * ARP tables or many concurrent connections, it might be counterproductive + * if you have a tiny ARP table or if there never are concurrent connections. + */ +#if !defined LWIP_NETIF_HWADDRHINT || defined __DOXYGEN__ +#define LWIP_NETIF_HWADDRHINT 0 +#endif + +/** + * LWIP_NETIF_TX_SINGLE_PBUF: if this is set to 1, lwIP *tries* to put all data + * to be sent into one single pbuf. This is for compatibility with DMA-enabled + * MACs that do not support scatter-gather. + * Beware that this might involve CPU-memcpy before transmitting that would not + * be needed without this flag! Use this only if you need to! + * + * ATTENTION: a driver should *NOT* rely on getting single pbufs but check TX + * pbufs for being in one piece. If not, @ref pbuf_clone can be used to get + * a single pbuf: + * if (p->next != NULL) { + * struct pbuf *q = pbuf_clone(PBUF_RAW, PBUF_RAM, p); + * if (q == NULL) { + * return ERR_MEM; + * } + * p = q; ATTENTION: do NOT free the old 'p' as the ref belongs to the caller! + * } + */ +#if !defined LWIP_NETIF_TX_SINGLE_PBUF || defined __DOXYGEN__ +#define LWIP_NETIF_TX_SINGLE_PBUF 0 +#endif /* LWIP_NETIF_TX_SINGLE_PBUF */ + +/** + * LWIP_NUM_NETIF_CLIENT_DATA: Number of clients that may store + * data in client_data member array of struct netif (max. 256). + */ +#if !defined LWIP_NUM_NETIF_CLIENT_DATA || defined __DOXYGEN__ +#define LWIP_NUM_NETIF_CLIENT_DATA 0 +#endif +/** + * @} + */ + +/* + ------------------------------------ + ---------- LOOPIF options ---------- + ------------------------------------ +*/ +/** + * @defgroup lwip_opts_loop Loopback interface + * @ingroup lwip_opts_netif + * @{ + */ +/** + * LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1). + * This is only needed when no real netifs are available. If at least one other + * netif is available, loopback traffic uses this netif. + */ +#if !defined LWIP_HAVE_LOOPIF || defined __DOXYGEN__ +#define LWIP_HAVE_LOOPIF (LWIP_NETIF_LOOPBACK && !LWIP_SINGLE_NETIF) +#endif + +/** + * LWIP_LOOPIF_MULTICAST==1: Support multicast/IGMP on loop interface (127.0.0.1). + */ +#if !defined LWIP_LOOPIF_MULTICAST || defined __DOXYGEN__ +#define LWIP_LOOPIF_MULTICAST 0 +#endif + +/** + * LWIP_NETIF_LOOPBACK==1: Support sending packets with a destination IP + * address equal to the netif IP address, looping them back up the stack. + */ +#if !defined LWIP_NETIF_LOOPBACK || defined __DOXYGEN__ +#define LWIP_NETIF_LOOPBACK 0 +#endif + +/** + * LWIP_LOOPBACK_MAX_PBUFS: Maximum number of pbufs on queue for loopback + * sending for each netif (0 = disabled) + */ +#if !defined LWIP_LOOPBACK_MAX_PBUFS || defined __DOXYGEN__ +#define LWIP_LOOPBACK_MAX_PBUFS 0 +#endif + +/** + * LWIP_NETIF_LOOPBACK_MULTITHREADING: Indicates whether threading is enabled in + * the system, as netifs must change how they behave depending on this setting + * for the LWIP_NETIF_LOOPBACK option to work. + * Setting this is needed to avoid reentering non-reentrant functions like + * tcp_input(). + * LWIP_NETIF_LOOPBACK_MULTITHREADING==1: Indicates that the user is using a + * multithreaded environment like tcpip.c. In this case, netif->input() + * is called directly. + * LWIP_NETIF_LOOPBACK_MULTITHREADING==0: Indicates a polling (or NO_SYS) setup. + * The packets are put on a list and netif_poll() must be called in + * the main application loop. + */ +#if !defined LWIP_NETIF_LOOPBACK_MULTITHREADING || defined __DOXYGEN__ +#define LWIP_NETIF_LOOPBACK_MULTITHREADING (!NO_SYS) +#endif +/** + * @} + */ + +/* + ------------------------------------ + ---------- Thread options ---------- + ------------------------------------ +*/ +/** + * @defgroup lwip_opts_thread Threading + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * TCPIP_THREAD_NAME: The name assigned to the main tcpip thread. + */ +#if !defined TCPIP_THREAD_NAME || defined __DOXYGEN__ +#define TCPIP_THREAD_NAME "tcpip_thread" +#endif + +/** + * TCPIP_THREAD_STACKSIZE: The stack size used by the main tcpip thread. + * The stack size value itself is platform-dependent, but is passed to + * sys_thread_new() when the thread is created. + */ +#if !defined TCPIP_THREAD_STACKSIZE || defined __DOXYGEN__ +#define TCPIP_THREAD_STACKSIZE 0 +#endif + +/** + * TCPIP_THREAD_PRIO: The priority assigned to the main tcpip thread. + * The priority value itself is platform-dependent, but is passed to + * sys_thread_new() when the thread is created. + */ +#if !defined TCPIP_THREAD_PRIO || defined __DOXYGEN__ +#define TCPIP_THREAD_PRIO 1 +#endif + +/** + * TCPIP_MBOX_SIZE: The mailbox size for the tcpip thread messages + * The queue size value itself is platform-dependent, but is passed to + * sys_mbox_new() when tcpip_init is called. + */ +#if !defined TCPIP_MBOX_SIZE || defined __DOXYGEN__ +#define TCPIP_MBOX_SIZE 0 +#endif + +/** + * Define this to something that triggers a watchdog. This is called from + * tcpip_thread after processing a message. + */ +#if !defined LWIP_TCPIP_THREAD_ALIVE || defined __DOXYGEN__ +#define LWIP_TCPIP_THREAD_ALIVE() +#endif + +/** + * SLIPIF_THREAD_NAME: The name assigned to the slipif_loop thread. + */ +#if !defined SLIPIF_THREAD_NAME || defined __DOXYGEN__ +#define SLIPIF_THREAD_NAME "slipif_loop" +#endif + +/** + * SLIP_THREAD_STACKSIZE: The stack size used by the slipif_loop thread. + * The stack size value itself is platform-dependent, but is passed to + * sys_thread_new() when the thread is created. + */ +#if !defined SLIPIF_THREAD_STACKSIZE || defined __DOXYGEN__ +#define SLIPIF_THREAD_STACKSIZE 0 +#endif + +/** + * SLIPIF_THREAD_PRIO: The priority assigned to the slipif_loop thread. + * The priority value itself is platform-dependent, but is passed to + * sys_thread_new() when the thread is created. + */ +#if !defined SLIPIF_THREAD_PRIO || defined __DOXYGEN__ +#define SLIPIF_THREAD_PRIO 1 +#endif + +/** + * DEFAULT_THREAD_NAME: The name assigned to any other lwIP thread. + */ +#if !defined DEFAULT_THREAD_NAME || defined __DOXYGEN__ +#define DEFAULT_THREAD_NAME "lwIP" +#endif + +/** + * DEFAULT_THREAD_STACKSIZE: The stack size used by any other lwIP thread. + * The stack size value itself is platform-dependent, but is passed to + * sys_thread_new() when the thread is created. + */ +#if !defined DEFAULT_THREAD_STACKSIZE || defined __DOXYGEN__ +#define DEFAULT_THREAD_STACKSIZE 0 +#endif + +/** + * DEFAULT_THREAD_PRIO: The priority assigned to any other lwIP thread. + * The priority value itself is platform-dependent, but is passed to + * sys_thread_new() when the thread is created. + */ +#if !defined DEFAULT_THREAD_PRIO || defined __DOXYGEN__ +#define DEFAULT_THREAD_PRIO 1 +#endif + +/** + * DEFAULT_RAW_RECVMBOX_SIZE: The mailbox size for the incoming packets on a + * NETCONN_RAW. The queue size value itself is platform-dependent, but is passed + * to sys_mbox_new() when the recvmbox is created. + */ +#if !defined DEFAULT_RAW_RECVMBOX_SIZE || defined __DOXYGEN__ +#define DEFAULT_RAW_RECVMBOX_SIZE 0 +#endif + +/** + * DEFAULT_UDP_RECVMBOX_SIZE: The mailbox size for the incoming packets on a + * NETCONN_UDP. The queue size value itself is platform-dependent, but is passed + * to sys_mbox_new() when the recvmbox is created. + */ +#if !defined DEFAULT_UDP_RECVMBOX_SIZE || defined __DOXYGEN__ +#define DEFAULT_UDP_RECVMBOX_SIZE 0 +#endif + +/** + * DEFAULT_TCP_RECVMBOX_SIZE: The mailbox size for the incoming packets on a + * NETCONN_TCP. The queue size value itself is platform-dependent, but is passed + * to sys_mbox_new() when the recvmbox is created. + */ +#if !defined DEFAULT_TCP_RECVMBOX_SIZE || defined __DOXYGEN__ +#define DEFAULT_TCP_RECVMBOX_SIZE 0 +#endif + +/** + * DEFAULT_ACCEPTMBOX_SIZE: The mailbox size for the incoming connections. + * The queue size value itself is platform-dependent, but is passed to + * sys_mbox_new() when the acceptmbox is created. + */ +#if !defined DEFAULT_ACCEPTMBOX_SIZE || defined __DOXYGEN__ +#define DEFAULT_ACCEPTMBOX_SIZE 0 +#endif +/** + * @} + */ + +/* + ---------------------------------------------- + ---------- Sequential layer options ---------- + ---------------------------------------------- +*/ +/** + * @defgroup lwip_opts_netconn Netconn + * @ingroup lwip_opts_threadsafe_apis + * @{ + */ +/** + * LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c) + */ +#if !defined LWIP_NETCONN || defined __DOXYGEN__ +#define LWIP_NETCONN 1 +#endif + +/** LWIP_TCPIP_TIMEOUT==1: Enable tcpip_timeout/tcpip_untimeout to create + * timers running in tcpip_thread from another thread. + */ +#if !defined LWIP_TCPIP_TIMEOUT || defined __DOXYGEN__ +#define LWIP_TCPIP_TIMEOUT 0 +#endif + +/** LWIP_NETCONN_SEM_PER_THREAD==1: Use one (thread-local) semaphore per + * thread calling socket/netconn functions instead of allocating one + * semaphore per netconn (and per select etc.) + * ATTENTION: a thread-local semaphore for API calls is needed: + * - LWIP_NETCONN_THREAD_SEM_GET() returning a sys_sem_t* + * - LWIP_NETCONN_THREAD_SEM_ALLOC() creating the semaphore + * - LWIP_NETCONN_THREAD_SEM_FREE() freeing the semaphore + * The latter 2 can be invoked up by calling netconn_thread_init()/netconn_thread_cleanup(). + * Ports may call these for threads created with sys_thread_new(). + */ +#if !defined LWIP_NETCONN_SEM_PER_THREAD || defined __DOXYGEN__ +#define LWIP_NETCONN_SEM_PER_THREAD 0 +#endif + +/** LWIP_NETCONN_FULLDUPLEX==1: Enable code that allows reading from one thread, + * writing from a 2nd thread and closing from a 3rd thread at the same time. + * ATTENTION: This is currently really alpha! Some requirements: + * - LWIP_NETCONN_SEM_PER_THREAD==1 is required to use one socket/netconn from + * multiple threads at once + * - sys_mbox_free() has to unblock receive tasks waiting on recvmbox/acceptmbox + * and prevent a task pending on this during/after deletion + */ +#if !defined LWIP_NETCONN_FULLDUPLEX || defined __DOXYGEN__ +#define LWIP_NETCONN_FULLDUPLEX 0 +#endif +/** + * @} + */ + +/* + ------------------------------------ + ---------- Socket options ---------- + ------------------------------------ +*/ +/** + * @defgroup lwip_opts_socket Sockets + * @ingroup lwip_opts_threadsafe_apis + * @{ + */ +/** + * LWIP_SOCKET==1: Enable Socket API (require to use sockets.c) + */ +#if !defined LWIP_SOCKET || defined __DOXYGEN__ +#define LWIP_SOCKET 1 +#endif + +/** + * LWIP_COMPAT_SOCKETS==1: Enable BSD-style sockets functions names through defines. + * LWIP_COMPAT_SOCKETS==2: Same as ==1 but correctly named functions are created. + * While this helps code completion, it might conflict with existing libraries. + * (only used if you use sockets.c) + */ +#if !defined LWIP_COMPAT_SOCKETS || defined __DOXYGEN__ +#define LWIP_COMPAT_SOCKETS 1 +#endif + +/** + * LWIP_POSIX_SOCKETS_IO_NAMES==1: Enable POSIX-style sockets functions names. + * Disable this option if you use a POSIX operating system that uses the same + * names (read, write & close). (only used if you use sockets.c) + */ +#if !defined LWIP_POSIX_SOCKETS_IO_NAMES || defined __DOXYGEN__ +#define LWIP_POSIX_SOCKETS_IO_NAMES 1 +#endif + +/** + * LWIP_SOCKET_OFFSET==n: Increases the file descriptor number created by LwIP with n. + * This can be useful when there are multiple APIs which create file descriptors. + * When they all start with a different offset and you won't make them overlap you can + * re implement read/write/close/ioctl/fnctl to send the requested action to the right + * library (sharing select will need more work though). + */ +#if !defined LWIP_SOCKET_OFFSET || defined __DOXYGEN__ +#define LWIP_SOCKET_OFFSET 0 +#endif + +/** + * LWIP_TCP_KEEPALIVE==1: Enable TCP_KEEPIDLE, TCP_KEEPINTVL and TCP_KEEPCNT + * options processing. Note that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set + * in seconds. (does not require sockets.c, and will affect tcp.c) + */ +#if !defined LWIP_TCP_KEEPALIVE || defined __DOXYGEN__ +#define LWIP_TCP_KEEPALIVE 0 +#endif + +/** + * LWIP_SO_SNDTIMEO==1: Enable send timeout for sockets/netconns and + * SO_SNDTIMEO processing. + */ +#if !defined LWIP_SO_SNDTIMEO || defined __DOXYGEN__ +#define LWIP_SO_SNDTIMEO 0 +#endif + +/** + * LWIP_SO_RCVTIMEO==1: Enable receive timeout for sockets/netconns and + * SO_RCVTIMEO processing. + */ +#if !defined LWIP_SO_RCVTIMEO || defined __DOXYGEN__ +#define LWIP_SO_RCVTIMEO 0 +#endif + +/** + * LWIP_SO_SNDRCVTIMEO_NONSTANDARD==1: SO_RCVTIMEO/SO_SNDTIMEO take an int + * (milliseconds, much like winsock does) instead of a struct timeval (default). + */ +#if !defined LWIP_SO_SNDRCVTIMEO_NONSTANDARD || defined __DOXYGEN__ +#define LWIP_SO_SNDRCVTIMEO_NONSTANDARD 0 +#endif + +/** + * LWIP_SO_RCVBUF==1: Enable SO_RCVBUF processing. + */ +#if !defined LWIP_SO_RCVBUF || defined __DOXYGEN__ +#define LWIP_SO_RCVBUF 0 +#endif + +/** + * LWIP_SO_LINGER==1: Enable SO_LINGER processing. + */ +#if !defined LWIP_SO_LINGER || defined __DOXYGEN__ +#define LWIP_SO_LINGER 0 +#endif + +/** + * If LWIP_SO_RCVBUF is used, this is the default value for recv_bufsize. + */ +#if !defined RECV_BUFSIZE_DEFAULT || defined __DOXYGEN__ +#define RECV_BUFSIZE_DEFAULT INT_MAX +#endif + +/** + * By default, TCP socket/netconn close waits 20 seconds max to send the FIN + */ +#if !defined LWIP_TCP_CLOSE_TIMEOUT_MS_DEFAULT || defined __DOXYGEN__ +#define LWIP_TCP_CLOSE_TIMEOUT_MS_DEFAULT 20000 +#endif + +/** + * SO_REUSE==1: Enable SO_REUSEADDR option. + */ +#if !defined SO_REUSE || defined __DOXYGEN__ +#define SO_REUSE 0 +#endif + +/** + * SO_REUSE_RXTOALL==1: Pass a copy of incoming broadcast/multicast packets + * to all local matches if SO_REUSEADDR is turned on. + * WARNING: Adds a memcpy for every packet if passing to more than one pcb! + */ +#if !defined SO_REUSE_RXTOALL || defined __DOXYGEN__ +#define SO_REUSE_RXTOALL 0 +#endif + +/** + * LWIP_FIONREAD_LINUXMODE==0 (default): ioctl/FIONREAD returns the amount of + * pending data in the network buffer. This is the way windows does it. It's + * the default for lwIP since it is smaller. + * LWIP_FIONREAD_LINUXMODE==1: ioctl/FIONREAD returns the size of the next + * pending datagram in bytes. This is the way linux does it. This code is only + * here for compatibility. + */ +#if !defined LWIP_FIONREAD_LINUXMODE || defined __DOXYGEN__ +#define LWIP_FIONREAD_LINUXMODE 0 +#endif + +/** + * LWIP_SOCKET_SELECT==1 (default): enable select() for sockets (uses a netconn + * callback to keep track of events). + * This saves RAM (counters per socket) and code (netconn event callback), which + * should improve performance a bit). + */ +#if !defined LWIP_SOCKET_SELECT || defined __DOXYGEN__ +#define LWIP_SOCKET_SELECT 1 +#endif + +/** + * LWIP_SOCKET_POLL==1 (default): enable poll() for sockets (including + * struct pollfd, nfds_t, and constants) + */ +#if !defined LWIP_SOCKET_POLL || defined __DOXYGEN__ +#define LWIP_SOCKET_POLL 1 +#endif +/** + * @} + */ + +/* + ---------------------------------------- + ---------- Statistics options ---------- + ---------------------------------------- +*/ +/** + * @defgroup lwip_opts_stats Statistics + * @ingroup lwip_opts_debug + * @{ + */ +/** + * LWIP_STATS==1: Enable statistics collection in lwip_stats. + */ +#if !defined LWIP_STATS || defined __DOXYGEN__ +#define LWIP_STATS 1 +#endif + +#if LWIP_STATS + +/** + * LWIP_STATS_DISPLAY==1: Compile in the statistics output functions. + */ +#if !defined LWIP_STATS_DISPLAY || defined __DOXYGEN__ +#define LWIP_STATS_DISPLAY 0 +#endif + +/** + * LINK_STATS==1: Enable link stats. + */ +#if !defined LINK_STATS || defined __DOXYGEN__ +#define LINK_STATS 1 +#endif + +/** + * ETHARP_STATS==1: Enable etharp stats. + */ +#if !defined ETHARP_STATS || defined __DOXYGEN__ +#define ETHARP_STATS (LWIP_ARP) +#endif + +/** + * IP_STATS==1: Enable IP stats. + */ +#if !defined IP_STATS || defined __DOXYGEN__ +#define IP_STATS 1 +#endif + +/** + * IPFRAG_STATS==1: Enable IP fragmentation stats. Default is + * on if using either frag or reass. + */ +#if !defined IPFRAG_STATS || defined __DOXYGEN__ +#define IPFRAG_STATS (IP_REASSEMBLY || IP_FRAG) +#endif + +/** + * ICMP_STATS==1: Enable ICMP stats. + */ +#if !defined ICMP_STATS || defined __DOXYGEN__ +#define ICMP_STATS 1 +#endif + +/** + * IGMP_STATS==1: Enable IGMP stats. + */ +#if !defined IGMP_STATS || defined __DOXYGEN__ +#define IGMP_STATS (LWIP_IGMP) +#endif + +/** + * UDP_STATS==1: Enable UDP stats. Default is on if + * UDP enabled, otherwise off. + */ +#if !defined UDP_STATS || defined __DOXYGEN__ +#define UDP_STATS (LWIP_UDP) +#endif + +/** + * TCP_STATS==1: Enable TCP stats. Default is on if TCP + * enabled, otherwise off. + */ +#if !defined TCP_STATS || defined __DOXYGEN__ +#define TCP_STATS (LWIP_TCP) +#endif + +/** + * MEM_STATS==1: Enable mem.c stats. + */ +#if !defined MEM_STATS || defined __DOXYGEN__ +#define MEM_STATS ((MEM_LIBC_MALLOC == 0) && (MEM_USE_POOLS == 0)) +#endif + +/** + * MEMP_STATS==1: Enable memp.c pool stats. + */ +#if !defined MEMP_STATS || defined __DOXYGEN__ +#define MEMP_STATS (MEMP_MEM_MALLOC == 0) +#endif + +/** + * SYS_STATS==1: Enable system stats (sem and mbox counts, etc). + */ +#if !defined SYS_STATS || defined __DOXYGEN__ +#define SYS_STATS (NO_SYS == 0) +#endif + +/** + * IP6_STATS==1: Enable IPv6 stats. + */ +#if !defined IP6_STATS || defined __DOXYGEN__ +#define IP6_STATS (LWIP_IPV6) +#endif + +/** + * ICMP6_STATS==1: Enable ICMP for IPv6 stats. + */ +#if !defined ICMP6_STATS || defined __DOXYGEN__ +#define ICMP6_STATS (LWIP_IPV6 && LWIP_ICMP6) +#endif + +/** + * IP6_FRAG_STATS==1: Enable IPv6 fragmentation stats. + */ +#if !defined IP6_FRAG_STATS || defined __DOXYGEN__ +#define IP6_FRAG_STATS (LWIP_IPV6 && (LWIP_IPV6_FRAG || LWIP_IPV6_REASS)) +#endif + +/** + * MLD6_STATS==1: Enable MLD for IPv6 stats. + */ +#if !defined MLD6_STATS || defined __DOXYGEN__ +#define MLD6_STATS (LWIP_IPV6 && LWIP_IPV6_MLD) +#endif + +/** + * ND6_STATS==1: Enable Neighbor discovery for IPv6 stats. + */ +#if !defined ND6_STATS || defined __DOXYGEN__ +#define ND6_STATS (LWIP_IPV6) +#endif + +/** + * MIB2_STATS==1: Stats for SNMP MIB2. + */ +#if !defined MIB2_STATS || defined __DOXYGEN__ +#define MIB2_STATS 0 +#endif + +#else + +#define LINK_STATS 0 +#define ETHARP_STATS 0 +#define IP_STATS 0 +#define IPFRAG_STATS 0 +#define ICMP_STATS 0 +#define IGMP_STATS 0 +#define UDP_STATS 0 +#define TCP_STATS 0 +#define MEM_STATS 0 +#define MEMP_STATS 0 +#define SYS_STATS 0 +#define LWIP_STATS_DISPLAY 0 +#define IP6_STATS 0 +#define ICMP6_STATS 0 +#define IP6_FRAG_STATS 0 +#define MLD6_STATS 0 +#define ND6_STATS 0 +#define MIB2_STATS 0 + +#endif /* LWIP_STATS */ +/** + * @} + */ + +/* + -------------------------------------- + ---------- Checksum options ---------- + -------------------------------------- +*/ +/** + * @defgroup lwip_opts_checksum Checksum + * @ingroup lwip_opts_infrastructure + * @{ + */ +/** + * LWIP_CHECKSUM_CTRL_PER_NETIF==1: Checksum generation/check can be enabled/disabled + * per netif. + * ATTENTION: if enabled, the CHECKSUM_GEN_* and CHECKSUM_CHECK_* defines must be enabled! + */ +#if !defined LWIP_CHECKSUM_CTRL_PER_NETIF || defined __DOXYGEN__ +#define LWIP_CHECKSUM_CTRL_PER_NETIF 0 +#endif + +/** + * CHECKSUM_GEN_IP==1: Generate checksums in software for outgoing IP packets. + */ +#if !defined CHECKSUM_GEN_IP || defined __DOXYGEN__ +#define CHECKSUM_GEN_IP 1 +#endif + +/** + * CHECKSUM_GEN_UDP==1: Generate checksums in software for outgoing UDP packets. + */ +#if !defined CHECKSUM_GEN_UDP || defined __DOXYGEN__ +#define CHECKSUM_GEN_UDP 1 +#endif + +/** + * CHECKSUM_GEN_TCP==1: Generate checksums in software for outgoing TCP packets. + */ +#if !defined CHECKSUM_GEN_TCP || defined __DOXYGEN__ +#define CHECKSUM_GEN_TCP 1 +#endif + +/** + * CHECKSUM_GEN_ICMP==1: Generate checksums in software for outgoing ICMP packets. + */ +#if !defined CHECKSUM_GEN_ICMP || defined __DOXYGEN__ +#define CHECKSUM_GEN_ICMP 1 +#endif + +/** + * CHECKSUM_GEN_ICMP6==1: Generate checksums in software for outgoing ICMP6 packets. + */ +#if !defined CHECKSUM_GEN_ICMP6 || defined __DOXYGEN__ +#define CHECKSUM_GEN_ICMP6 1 +#endif + +/** + * CHECKSUM_CHECK_IP==1: Check checksums in software for incoming IP packets. + */ +#if !defined CHECKSUM_CHECK_IP || defined __DOXYGEN__ +#define CHECKSUM_CHECK_IP 1 +#endif + +/** + * CHECKSUM_CHECK_UDP==1: Check checksums in software for incoming UDP packets. + */ +#if !defined CHECKSUM_CHECK_UDP || defined __DOXYGEN__ +#define CHECKSUM_CHECK_UDP 1 +#endif + +/** + * CHECKSUM_CHECK_TCP==1: Check checksums in software for incoming TCP packets. + */ +#if !defined CHECKSUM_CHECK_TCP || defined __DOXYGEN__ +#define CHECKSUM_CHECK_TCP 1 +#endif + +/** + * CHECKSUM_CHECK_ICMP==1: Check checksums in software for incoming ICMP packets. + */ +#if !defined CHECKSUM_CHECK_ICMP || defined __DOXYGEN__ +#define CHECKSUM_CHECK_ICMP 1 +#endif + +/** + * CHECKSUM_CHECK_ICMP6==1: Check checksums in software for incoming ICMPv6 packets + */ +#if !defined CHECKSUM_CHECK_ICMP6 || defined __DOXYGEN__ +#define CHECKSUM_CHECK_ICMP6 1 +#endif + +/** + * LWIP_CHECKSUM_ON_COPY==1: Calculate checksum when copying data from + * application buffers to pbufs. + */ +#if !defined LWIP_CHECKSUM_ON_COPY || defined __DOXYGEN__ +#define LWIP_CHECKSUM_ON_COPY 0 +#endif +/** + * @} + */ + +/* + --------------------------------------- + ---------- IPv6 options --------------- + --------------------------------------- +*/ +/** + * @defgroup lwip_opts_ipv6 IPv6 + * @ingroup lwip_opts + * @{ + */ +/** + * LWIP_IPV6==1: Enable IPv6 + */ +#if !defined LWIP_IPV6 || defined __DOXYGEN__ +#define LWIP_IPV6 0 +#endif + +/** + * IPV6_REASS_MAXAGE: Maximum time (in multiples of IP6_REASS_TMR_INTERVAL - so seconds, normally) + * a fragmented IP packet waits for all fragments to arrive. If not all fragments arrived + * in this time, the whole packet is discarded. + */ +#if !defined IPV6_REASS_MAXAGE || defined __DOXYGEN__ +#define IPV6_REASS_MAXAGE 60 +#endif + +/** + * LWIP_IPV6_SCOPES==1: Enable support for IPv6 address scopes, ensuring that + * e.g. link-local addresses are really treated as link-local. Disable this + * setting only for single-interface configurations. + * All addresses that have a scope according to the default policy (link-local + * unicast addresses, interface-local and link-local multicast addresses) should + * now have a zone set on them before being passed to the core API, although + * lwIP will currently attempt to select a zone on the caller's behalf when + * necessary. Applications that directly assign IPv6 addresses to interfaces + * (which is NOT recommended) must now ensure that link-local addresses carry + * the netif's zone. See the new ip6_zone.h header file for more information and + * relevant macros. For now it is still possible to turn off scopes support + * through the new LWIP_IPV6_SCOPES option. When upgrading an implementation that + * uses the core API directly, it is highly recommended to enable + * LWIP_IPV6_SCOPES_DEBUG at least for a while, to ensure e.g. proper address + * initialization. + */ +#if !defined LWIP_IPV6_SCOPES || defined __DOXYGEN__ +#define LWIP_IPV6_SCOPES (LWIP_IPV6 && !LWIP_SINGLE_NETIF) +#endif + +/** + * LWIP_IPV6_SCOPES_DEBUG==1: Perform run-time checks to verify that addresses + * are properly zoned (see ip6_zone.h on what that means) where it matters. + * Enabling this setting is highly recommended when upgrading from an existing + * installation that is not yet scope-aware; otherwise it may be too expensive. + */ +#if !defined LWIP_IPV6_SCOPES_DEBUG || defined __DOXYGEN__ +#define LWIP_IPV6_SCOPES_DEBUG 0 +#endif + +/** + * LWIP_IPV6_NUM_ADDRESSES: Number of IPv6 addresses per netif. + */ +#if !defined LWIP_IPV6_NUM_ADDRESSES || defined __DOXYGEN__ +#define LWIP_IPV6_NUM_ADDRESSES 3 +#endif + +/** + * LWIP_IPV6_FORWARD==1: Forward IPv6 packets across netifs + */ +#if !defined LWIP_IPV6_FORWARD || defined __DOXYGEN__ +#define LWIP_IPV6_FORWARD 0 +#endif + +/** + * LWIP_IPV6_FRAG==1: Fragment outgoing IPv6 packets that are too big. + */ +#if !defined LWIP_IPV6_FRAG || defined __DOXYGEN__ +#define LWIP_IPV6_FRAG 1 +#endif + +/** + * LWIP_IPV6_REASS==1: reassemble incoming IPv6 packets that fragmented + */ +#if !defined LWIP_IPV6_REASS || defined __DOXYGEN__ +#define LWIP_IPV6_REASS LWIP_IPV6 +#endif + +/** + * LWIP_IPV6_SEND_ROUTER_SOLICIT==1: Send router solicitation messages during + * network startup. + */ +#if !defined LWIP_IPV6_SEND_ROUTER_SOLICIT || defined __DOXYGEN__ +#define LWIP_IPV6_SEND_ROUTER_SOLICIT 1 +#endif + +/** + * LWIP_IPV6_AUTOCONFIG==1: Enable stateless address autoconfiguration as per RFC 4862. + */ +#if !defined LWIP_IPV6_AUTOCONFIG || defined __DOXYGEN__ +#define LWIP_IPV6_AUTOCONFIG LWIP_IPV6 +#endif + +/** + * LWIP_IPV6_ADDRESS_LIFETIMES==1: Keep valid and preferred lifetimes for each + * IPv6 address. Required for LWIP_IPV6_AUTOCONFIG. May still be enabled + * otherwise, in which case the application may assign address lifetimes with + * the appropriate macros. Addresses with no lifetime are assumed to be static. + * If this option is disabled, all addresses are assumed to be static. + */ +#if !defined LWIP_IPV6_ADDRESS_LIFETIMES || defined __DOXYGEN__ +#define LWIP_IPV6_ADDRESS_LIFETIMES LWIP_IPV6_AUTOCONFIG +#endif + +/** + * LWIP_IPV6_DUP_DETECT_ATTEMPTS=[0..7]: Number of duplicate address detection attempts. + */ +#if !defined LWIP_IPV6_DUP_DETECT_ATTEMPTS || defined __DOXYGEN__ +#define LWIP_IPV6_DUP_DETECT_ATTEMPTS 1 +#endif +/** + * @} + */ + +/** + * @defgroup lwip_opts_icmp6 ICMP6 + * @ingroup lwip_opts_ipv6 + * @{ + */ +/** + * LWIP_ICMP6==1: Enable ICMPv6 (mandatory per RFC) + */ +#if !defined LWIP_ICMP6 || defined __DOXYGEN__ +#define LWIP_ICMP6 LWIP_IPV6 +#endif + +/** + * LWIP_ICMP6_DATASIZE: bytes from original packet to send back in + * ICMPv6 error messages. + */ +#if !defined LWIP_ICMP6_DATASIZE || defined __DOXYGEN__ +#define LWIP_ICMP6_DATASIZE 8 +#endif + +/** + * LWIP_ICMP6_HL: default hop limit for ICMPv6 messages + */ +#if !defined LWIP_ICMP6_HL || defined __DOXYGEN__ +#define LWIP_ICMP6_HL 255 +#endif +/** + * @} + */ + +/** + * @defgroup lwip_opts_mld6 Multicast listener discovery + * @ingroup lwip_opts_ipv6 + * @{ + */ +/** + * LWIP_IPV6_MLD==1: Enable multicast listener discovery protocol. + * If LWIP_IPV6 is enabled but this setting is disabled, the MAC layer must + * indiscriminately pass all inbound IPv6 multicast traffic to lwIP. + */ +#if !defined LWIP_IPV6_MLD || defined __DOXYGEN__ +#define LWIP_IPV6_MLD LWIP_IPV6 +#endif + +/** + * MEMP_NUM_MLD6_GROUP: Max number of IPv6 multicast groups that can be joined. + * There must be enough groups so that each netif can join the solicited-node + * multicast group for each of its local addresses, plus one for MDNS if + * applicable, plus any number of groups to be joined on UDP sockets. + */ +#if !defined MEMP_NUM_MLD6_GROUP || defined __DOXYGEN__ +#define MEMP_NUM_MLD6_GROUP 4 +#endif +/** + * @} + */ + +/** + * @defgroup lwip_opts_nd6 Neighbor discovery + * @ingroup lwip_opts_ipv6 + * @{ + */ +/** + * LWIP_ND6_QUEUEING==1: queue outgoing IPv6 packets while MAC address + * is being resolved. + */ +#if !defined LWIP_ND6_QUEUEING || defined __DOXYGEN__ +#define LWIP_ND6_QUEUEING LWIP_IPV6 +#endif + +/** + * MEMP_NUM_ND6_QUEUE: Max number of IPv6 packets to queue during MAC resolution. + */ +#if !defined MEMP_NUM_ND6_QUEUE || defined __DOXYGEN__ +#define MEMP_NUM_ND6_QUEUE 20 +#endif + +/** + * LWIP_ND6_NUM_NEIGHBORS: Number of entries in IPv6 neighbor cache + */ +#if !defined LWIP_ND6_NUM_NEIGHBORS || defined __DOXYGEN__ +#define LWIP_ND6_NUM_NEIGHBORS 10 +#endif + +/** + * LWIP_ND6_NUM_DESTINATIONS: number of entries in IPv6 destination cache + */ +#if !defined LWIP_ND6_NUM_DESTINATIONS || defined __DOXYGEN__ +#define LWIP_ND6_NUM_DESTINATIONS 10 +#endif + +/** + * LWIP_ND6_NUM_PREFIXES: number of entries in IPv6 on-link prefixes cache + */ +#if !defined LWIP_ND6_NUM_PREFIXES || defined __DOXYGEN__ +#define LWIP_ND6_NUM_PREFIXES 5 +#endif + +/** + * LWIP_ND6_NUM_ROUTERS: number of entries in IPv6 default router cache + */ +#if !defined LWIP_ND6_NUM_ROUTERS || defined __DOXYGEN__ +#define LWIP_ND6_NUM_ROUTERS 3 +#endif + +/** + * LWIP_ND6_MAX_MULTICAST_SOLICIT: max number of multicast solicit messages to send + * (neighbor solicit and router solicit) + */ +#if !defined LWIP_ND6_MAX_MULTICAST_SOLICIT || defined __DOXYGEN__ +#define LWIP_ND6_MAX_MULTICAST_SOLICIT 3 +#endif + +/** + * LWIP_ND6_MAX_UNICAST_SOLICIT: max number of unicast neighbor solicitation messages + * to send during neighbor reachability detection. + */ +#if !defined LWIP_ND6_MAX_UNICAST_SOLICIT || defined __DOXYGEN__ +#define LWIP_ND6_MAX_UNICAST_SOLICIT 3 +#endif + +/** + * Unused: See ND RFC (time in milliseconds). + */ +#if !defined LWIP_ND6_MAX_ANYCAST_DELAY_TIME || defined __DOXYGEN__ +#define LWIP_ND6_MAX_ANYCAST_DELAY_TIME 1000 +#endif + +/** + * Unused: See ND RFC + */ +#if !defined LWIP_ND6_MAX_NEIGHBOR_ADVERTISEMENT || defined __DOXYGEN__ +#define LWIP_ND6_MAX_NEIGHBOR_ADVERTISEMENT 3 +#endif + +/** + * LWIP_ND6_REACHABLE_TIME: default neighbor reachable time (in milliseconds). + * May be updated by router advertisement messages. + */ +#if !defined LWIP_ND6_REACHABLE_TIME || defined __DOXYGEN__ +#define LWIP_ND6_REACHABLE_TIME 30000 +#endif + +/** + * LWIP_ND6_RETRANS_TIMER: default retransmission timer for solicitation messages + */ +#if !defined LWIP_ND6_RETRANS_TIMER || defined __DOXYGEN__ +#define LWIP_ND6_RETRANS_TIMER 1000 +#endif + +/** + * LWIP_ND6_DELAY_FIRST_PROBE_TIME: Delay before first unicast neighbor solicitation + * message is sent, during neighbor reachability detection. + */ +#if !defined LWIP_ND6_DELAY_FIRST_PROBE_TIME || defined __DOXYGEN__ +#define LWIP_ND6_DELAY_FIRST_PROBE_TIME 5000 +#endif + +/** + * LWIP_ND6_ALLOW_RA_UPDATES==1: Allow Router Advertisement messages to update + * Reachable time and retransmission timers, and netif MTU. + */ +#if !defined LWIP_ND6_ALLOW_RA_UPDATES || defined __DOXYGEN__ +#define LWIP_ND6_ALLOW_RA_UPDATES 1 +#endif + +/** + * LWIP_ND6_TCP_REACHABILITY_HINTS==1: Allow TCP to provide Neighbor Discovery + * with reachability hints for connected destinations. This helps avoid sending + * unicast neighbor solicitation messages. + */ +#if !defined LWIP_ND6_TCP_REACHABILITY_HINTS || defined __DOXYGEN__ +#define LWIP_ND6_TCP_REACHABILITY_HINTS 1 +#endif + +/** + * LWIP_ND6_RDNSS_MAX_DNS_SERVERS > 0: Use IPv6 Router Advertisement Recursive + * DNS Server Option (as per RFC 6106) to copy a defined maximum number of DNS + * servers to the DNS module. + */ +#if !defined LWIP_ND6_RDNSS_MAX_DNS_SERVERS || defined __DOXYGEN__ +#define LWIP_ND6_RDNSS_MAX_DNS_SERVERS 0 +#endif +/** + * @} + */ + +/** + * @defgroup lwip_opts_dhcpv6 DHCPv6 + * @ingroup lwip_opts_ipv6 + * @{ + */ +/** + * LWIP_IPV6_DHCP6==1: enable DHCPv6 stateful/stateless address autoconfiguration. + */ +#if !defined LWIP_IPV6_DHCP6 || defined __DOXYGEN__ +#define LWIP_IPV6_DHCP6 0 +#endif + +/** + * LWIP_IPV6_DHCP6_STATEFUL==1: enable DHCPv6 stateful address autoconfiguration. + * (not supported, yet!) + */ +#if !defined LWIP_IPV6_DHCP6_STATEFUL || defined __DOXYGEN__ +#define LWIP_IPV6_DHCP6_STATEFUL 0 +#endif + +/** + * LWIP_IPV6_DHCP6_STATELESS==1: enable DHCPv6 stateless address autoconfiguration. + */ +#if !defined LWIP_IPV6_DHCP6_STATELESS || defined __DOXYGEN__ +#define LWIP_IPV6_DHCP6_STATELESS LWIP_IPV6_DHCP6 +#endif + +/** + * LWIP_DHCP6_GETS_NTP==1: Request NTP servers via DHCPv6. For each + * response packet, a callback is called, which has to be provided by the port: + * void dhcp6_set_ntp_servers(u8_t num_ntp_servers, ip_addr_t* ntp_server_addrs); +*/ +#if !defined LWIP_DHCP6_GET_NTP_SRV || defined __DOXYGEN__ +#define LWIP_DHCP6_GET_NTP_SRV 0 +#endif + +/** + * The maximum of NTP servers requested + */ +#if !defined LWIP_DHCP6_MAX_NTP_SERVERS || defined __DOXYGEN__ +#define LWIP_DHCP6_MAX_NTP_SERVERS 1 +#endif + +/** + * LWIP_DHCP6_MAX_DNS_SERVERS > 0: Request DNS servers via DHCPv6. + * DNS servers received in the response are passed to DNS via @ref dns_setserver() + * (up to the maximum limit defined here). + */ +#if !defined LWIP_DHCP6_MAX_DNS_SERVERS || defined __DOXYGEN__ +#define LWIP_DHCP6_MAX_DNS_SERVERS DNS_MAX_SERVERS +#endif +/** + * @} + */ + +/* + --------------------------------------- + ---------- Hook options --------------- + --------------------------------------- +*/ + +/** + * @defgroup lwip_opts_hooks Hooks + * @ingroup lwip_opts_infrastructure + * Hooks are undefined by default, define them to a function if you need them. + * @{ + */ + +/** + * LWIP_HOOK_FILENAME: Custom filename to \#include in files that provide hooks. + * Declare your hook function prototypes in there, you may also \#include all headers + * providing data types that are need in this file. + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_FILENAME "path/to/my/lwip_hooks.h" +#endif + +/** + * LWIP_HOOK_TCP_ISN: + * Hook for generation of the Initial Sequence Number (ISN) for a new TCP + * connection. The default lwIP ISN generation algorithm is very basic and may + * allow for TCP spoofing attacks. This hook provides the means to implement + * the standardized ISN generation algorithm from RFC 6528 (see contrib/adons/tcp_isn), + * or any other desired algorithm as a replacement. + * Called from tcp_connect() and tcp_listen_input() when an ISN is needed for + * a new TCP connection, if TCP support (@ref LWIP_TCP) is enabled.\n + * Signature:\code{.c} + * u32_t my_hook_tcp_isn(const ip_addr_t* local_ip, u16_t local_port, const ip_addr_t* remote_ip, u16_t remote_port); + * \endcode + * - it may be necessary to use "struct ip_addr" (ip4_addr, ip6_addr) instead of "ip_addr_t" in function declarations\n + * Arguments: + * - local_ip: pointer to the local IP address of the connection + * - local_port: local port number of the connection (host-byte order) + * - remote_ip: pointer to the remote IP address of the connection + * - remote_port: remote port number of the connection (host-byte order)\n + * Return value: + * - the 32-bit Initial Sequence Number to use for the new TCP connection. + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_TCP_ISN(local_ip, local_port, remote_ip, remote_port) +#endif + +/** + * LWIP_HOOK_TCP_INPACKET_PCB: + * Hook for intercepting incoming packets before they are passed to a pcb. This + * allows updating some state or even dropping a packet. + * Signature:\code{.c} + * err_t my_hook_tcp_inpkt(struct tcp_pcb *pcb, struct tcp_hdr *hdr, u16_t optlen, u16_t opt1len, u8_t *opt2, struct pbuf *p); + * \endcode + * Arguments: + * - pcb: tcp_pcb selected for input of this packet (ATTENTION: this may be + * struct tcp_pcb_listen if pcb->state == LISTEN) + * - hdr: pointer to tcp header (ATTENTION: tcp options may not be in one piece!) + * - optlen: tcp option length + * - opt1len: tcp option length 1st part + * - opt2: if this is != NULL, tcp options are split among 2 pbufs. In that case, + * options start at right after the tcp header ('(u8_t*)(hdr + 1)') for + * the first 'opt1len' bytes and the rest starts at 'opt2'. opt2len can + * be simply calculated: 'opt2len = optlen - opt1len;' + * - p: input packet, p->payload points to application data (that's why tcp hdr + * and options are passed in seperately) + * Return value: + * - ERR_OK: continue input of this packet as normal + * - != ERR_OK: drop this packet for input (don't continue input processing) + * + * ATTENTION: don't call any tcp api functions that might change tcp state (pcb + * state or any pcb lists) from this callback! + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_TCP_INPACKET_PCB(pcb, hdr, optlen, opt1len, opt2, p) +#endif + +/** + * LWIP_HOOK_TCP_OUT_TCPOPT_LENGTH: + * Hook for increasing the size of the options allocated with a tcp header. + * Together with LWIP_HOOK_TCP_OUT_ADD_TCPOPTS, this can be used to add custom + * options to outgoing tcp segments. + * Signature:\code{.c} + * u8_t my_hook_tcp_out_tcpopt_length(const struct tcp_pcb *pcb, u8_t internal_option_length); + * \endcode + * Arguments: + * - pcb: tcp_pcb that transmits (ATTENTION: this may be NULL or + * struct tcp_pcb_listen if pcb->state == LISTEN) + * - internal_option_length: tcp option length used by the stack internally + * Return value: + * - a number of bytes to allocate for tcp options (internal_option_length <= ret <= 40) + * + * ATTENTION: don't call any tcp api functions that might change tcp state (pcb + * state or any pcb lists) from this callback! + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_TCP_OUT_TCPOPT_LENGTH(pcb, internal_len) +#endif + +/** + * LWIP_HOOK_TCP_OUT_ADD_TCPOPTS: + * Hook for adding custom options to outgoing tcp segments. + * Space for these custom options has to be reserved via LWIP_HOOK_TCP_OUT_TCPOPT_LENGTH. + * Signature:\code{.c} + * u32_t *my_hook_tcp_out_add_tcpopts(struct pbuf *p, struct tcp_hdr *hdr, const struct tcp_pcb *pcb, u32_t *opts); + * \endcode + * Arguments: + * - p: output packet, p->payload pointing to tcp header, data follows + * - hdr: tcp header + * - pcb: tcp_pcb that transmits (ATTENTION: this may be NULL or + * struct tcp_pcb_listen if pcb->state == LISTEN) + * - opts: pointer where to add the custom options (there may already be options + * between the header and these) + * Return value: + * - pointer pointing directly after the inserted options + * + * ATTENTION: don't call any tcp api functions that might change tcp state (pcb + * state or any pcb lists) from this callback! + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_TCP_OUT_ADD_TCPOPTS(p, hdr, pcb, opts) +#endif + +/** + * LWIP_HOOK_IP4_INPUT(pbuf, input_netif): + * Called from ip_input() (IPv4) + * Signature:\code{.c} + * int my_hook(struct pbuf *pbuf, struct netif *input_netif); + * \endcode + * Arguments: + * - pbuf: received struct pbuf passed to ip_input() + * - input_netif: struct netif on which the packet has been received + * Return values: + * - 0: Hook has not consumed the packet, packet is processed as normal + * - != 0: Hook has consumed the packet. + * If the hook consumed the packet, 'pbuf' is in the responsibility of the hook + * (i.e. free it when done). + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_IP4_INPUT(pbuf, input_netif) +#endif + +/** + * LWIP_HOOK_IP4_ROUTE(dest): + * Called from ip_route() (IPv4) + * Signature:\code{.c} + * struct netif *my_hook(const ip4_addr_t *dest); + * \endcode + * Arguments: + * - dest: destination IPv4 address + * Returns values: + * - the destination netif + * - NULL if no destination netif is found. In that case, ip_route() continues as normal. + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_IP4_ROUTE() +#endif + +/** + * LWIP_HOOK_IP4_ROUTE_SRC(src, dest): + * Source-based routing for IPv4 - called from ip_route() (IPv4) + * Signature:\code{.c} + * struct netif *my_hook(const ip4_addr_t *src, const ip4_addr_t *dest); + * \endcode + * Arguments: + * - src: local/source IPv4 address + * - dest: destination IPv4 address + * Returns values: + * - the destination netif + * - NULL if no destination netif is found. In that case, ip_route() continues as normal. + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_IP4_ROUTE_SRC(src, dest) +#endif + +/** + * LWIP_HOOK_IP4_CANFORWARD(src, dest): + * Check if an IPv4 can be forwarded - called from: + * ip4_input() -> ip4_forward() -> ip4_canforward() (IPv4) + * - source address is available via ip4_current_src_addr() + * - calling an output function in this context (e.g. multicast router) is allowed + * Signature:\code{.c} + * int my_hook(struct pbuf *p, u32_t dest_addr_hostorder); + * \endcode + * Arguments: + * - p: packet to forward + * - dest: destination IPv4 address + * Returns values: + * - 1: forward + * - 0: don't forward + * - -1: no decision. In that case, ip4_canforward() continues as normal. + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_IP4_CANFORWARD(src, dest) +#endif + +/** + * LWIP_HOOK_ETHARP_GET_GW(netif, dest): + * Called from etharp_output() (IPv4) + * Signature:\code{.c} + * const ip4_addr_t *my_hook(struct netif *netif, const ip4_addr_t *dest); + * \endcode + * Arguments: + * - netif: the netif used for sending + * - dest: the destination IPv4 address + * Return values: + * - the IPv4 address of the gateway to handle the specified destination IPv4 address + * - NULL, in which case the netif's default gateway is used + * + * The returned address MUST be directly reachable on the specified netif! + * This function is meant to implement advanced IPv4 routing together with + * LWIP_HOOK_IP4_ROUTE(). The actual routing/gateway table implementation is + * not part of lwIP but can e.g. be hidden in the netif's state argument. +*/ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_ETHARP_GET_GW(netif, dest) +#endif + +/** + * LWIP_HOOK_IP6_INPUT(pbuf, input_netif): + * Called from ip6_input() (IPv6) + * Signature:\code{.c} + * int my_hook(struct pbuf *pbuf, struct netif *input_netif); + * \endcode + * Arguments: + * - pbuf: received struct pbuf passed to ip6_input() + * - input_netif: struct netif on which the packet has been received + * Return values: + * - 0: Hook has not consumed the packet, packet is processed as normal + * - != 0: Hook has consumed the packet. + * If the hook consumed the packet, 'pbuf' is in the responsibility of the hook + * (i.e. free it when done). + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_IP6_INPUT(pbuf, input_netif) +#endif + +/** + * LWIP_HOOK_IP6_ROUTE(src, dest): + * Called from ip_route() (IPv6) + * Signature:\code{.c} + * struct netif *my_hook(const ip6_addr_t *dest, const ip6_addr_t *src); + * \endcode + * Arguments: + * - src: source IPv6 address + * - dest: destination IPv6 address + * Return values: + * - the destination netif + * - NULL if no destination netif is found. In that case, ip6_route() continues as normal. + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_IP6_ROUTE(src, dest) +#endif + +/** + * LWIP_HOOK_ND6_GET_GW(netif, dest): + * Called from nd6_get_next_hop_entry() (IPv6) + * Signature:\code{.c} + * const ip6_addr_t *my_hook(struct netif *netif, const ip6_addr_t *dest); + * \endcode + * Arguments: + * - netif: the netif used for sending + * - dest: the destination IPv6 address + * Return values: + * - the IPv6 address of the next hop to handle the specified destination IPv6 address + * - NULL, in which case a NDP-discovered router is used instead + * + * The returned address MUST be directly reachable on the specified netif! + * This function is meant to implement advanced IPv6 routing together with + * LWIP_HOOK_IP6_ROUTE(). The actual routing/gateway table implementation is + * not part of lwIP but can e.g. be hidden in the netif's state argument. +*/ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_ND6_GET_GW(netif, dest) +#endif + +/** + * LWIP_HOOK_VLAN_CHECK(netif, eth_hdr, vlan_hdr): + * Called from ethernet_input() if VLAN support is enabled + * Signature:\code{.c} + * int my_hook(struct netif *netif, struct eth_hdr *eth_hdr, struct eth_vlan_hdr *vlan_hdr); + * \endcode + * Arguments: + * - netif: struct netif on which the packet has been received + * - eth_hdr: struct eth_hdr of the packet + * - vlan_hdr: struct eth_vlan_hdr of the packet + * Return values: + * - 0: Packet must be dropped. + * - != 0: Packet must be accepted. + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_VLAN_CHECK(netif, eth_hdr, vlan_hdr) +#endif + +/** + * LWIP_HOOK_VLAN_SET: + * Hook can be used to set prio_vid field of vlan_hdr. If you need to store data + * on per-netif basis to implement this callback, see @ref netif_cd. + * Called from ethernet_output() if VLAN support (@ref ETHARP_SUPPORT_VLAN) is enabled.\n + * Signature:\code{.c} + * s32_t my_hook_vlan_set(struct netif* netif, struct pbuf* pbuf, const struct eth_addr* src, const struct eth_addr* dst, u16_t eth_type);\n + * \endcode + * Arguments: + * - netif: struct netif that the packet will be sent through + * - p: struct pbuf packet to be sent + * - src: source eth address + * - dst: destination eth address + * - eth_type: ethernet type to packet to be sent\n + * + * + * Return values: + * - <0: Packet shall not contain VLAN header. + * - 0 <= return value <= 0xFFFF: Packet shall contain VLAN header. Return value is prio_vid in host byte order. + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_VLAN_SET(netif, p, src, dst, eth_type) +#endif + +/** + * LWIP_HOOK_MEMP_AVAILABLE(memp_t_type): + * Called from memp_free() when a memp pool was empty and an item is now available + * Signature:\code{.c} + * void my_hook(memp_t type); + * \endcode + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_MEMP_AVAILABLE(memp_t_type) +#endif + +/** + * LWIP_HOOK_UNKNOWN_ETH_PROTOCOL(pbuf, netif): + * Called from ethernet_input() when an unknown eth type is encountered. + * Signature:\code{.c} + * err_t my_hook(struct pbuf* pbuf, struct netif* netif); + * \endcode + * Arguments: + * - p: rx packet with unknown eth type + * - netif: netif on which the packet has been received + * Return values: + * - ERR_OK if packet is accepted (hook function now owns the pbuf) + * - any error code otherwise (pbuf is freed) + * + * Payload points to ethernet header! + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_UNKNOWN_ETH_PROTOCOL(pbuf, netif) +#endif + +/** + * LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, state, msg, msg_type, options_len_ptr): + * Called from various dhcp functions when sending a DHCP message. + * This hook is called just before the DHCP message trailer is added, so the + * options are at the end of a DHCP message. + * Signature:\code{.c} + * void my_hook(struct netif *netif, struct dhcp *dhcp, u8_t state, struct dhcp_msg *msg, + * u8_t msg_type, u16_t *options_len_ptr); + * \endcode + * Arguments: + * - netif: struct netif that the packet will be sent through + * - dhcp: struct dhcp on that netif + * - state: current dhcp state (dhcp_state_enum_t as an u8_t) + * - msg: struct dhcp_msg that will be sent + * - msg_type: dhcp message type to be sent (u8_t) + * - options_len_ptr: pointer to the current length of options in the dhcp_msg "msg" + * (must be increased when options are added!) + * + * Options need to appended like this: + * LWIP_ASSERT("dhcp option overflow", *options_len_ptr + option_len + 2 <= DHCP_OPTIONS_LEN); + * msg->options[(*options_len_ptr)++] = <option_number>; + * msg->options[(*options_len_ptr)++] = <option_len>; + * msg->options[(*options_len_ptr)++] = <option_bytes>; + * [...] + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, state, msg, msg_type, options_len_ptr) +#endif + +/** + * LWIP_HOOK_DHCP_PARSE_OPTION(netif, dhcp, state, msg, msg_type, option, len, pbuf, option_value_offset): + * Called from dhcp_parse_reply when receiving a DHCP message. + * This hook is called for every option in the received message that is not handled internally. + * Signature:\code{.c} + * void my_hook(struct netif *netif, struct dhcp *dhcp, u8_t state, struct dhcp_msg *msg, + * u8_t msg_type, u8_t option, u8_t option_len, struct pbuf *pbuf, u16_t option_value_offset); + * \endcode + * Arguments: + * - netif: struct netif that the packet will be sent through + * - dhcp: struct dhcp on that netif + * - state: current dhcp state (dhcp_state_enum_t as an u8_t) + * - msg: struct dhcp_msg that was received + * - msg_type: dhcp message type received (u8_t, ATTENTION: only valid after + * the message type option has been parsed!) + * - option: option value (u8_t) + * - len: option data length (u8_t) + * - pbuf: pbuf where option data is contained + * - option_value_offset: offset in pbuf where option data begins + * + * A nice way to get the option contents is pbuf_get_contiguous(): + * u8_t buf[32]; + * u8_t *ptr = (u8_t*)pbuf_get_contiguous(p, buf, sizeof(buf), LWIP_MIN(option_len, sizeof(buf)), offset); + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_DHCP_PARSE_OPTION(netif, dhcp, state, msg, msg_type, option, len, pbuf, offset) +#endif + +/** + * LWIP_HOOK_DHCP6_APPEND_OPTIONS(netif, dhcp6, state, msg, msg_type, options_len_ptr, max_len): + * Called from various dhcp6 functions when sending a DHCP6 message. + * This hook is called just before the DHCP6 message is sent, so the + * options are at the end of a DHCP6 message. + * Signature:\code{.c} + * void my_hook(struct netif *netif, struct dhcp6 *dhcp, u8_t state, struct dhcp6_msg *msg, + * u8_t msg_type, u16_t *options_len_ptr); + * \endcode + * Arguments: + * - netif: struct netif that the packet will be sent through + * - dhcp6: struct dhcp6 on that netif + * - state: current dhcp6 state (dhcp6_state_enum_t as an u8_t) + * - msg: struct dhcp6_msg that will be sent + * - msg_type: dhcp6 message type to be sent (u8_t) + * - options_len_ptr: pointer to the current length of options in the dhcp6_msg "msg" + * (must be increased when options are added!) + * + * Options need to appended like this: + * u8_t *options = (u8_t *)(msg + 1); + * LWIP_ASSERT("dhcp option overflow", sizeof(struct dhcp6_msg) + *options_len_ptr + newoptlen <= max_len); + * options[(*options_len_ptr)++] = <option_data>; + * [...] + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_DHCP6_APPEND_OPTIONS(netif, dhcp6, state, msg, msg_type, options_len_ptr, max_len) +#endif + +/** + * LWIP_HOOK_SOCKETS_SETSOCKOPT(s, sock, level, optname, optval, optlen, err) + * Called from socket API to implement setsockopt() for options not provided by lwIP. + * Core lock is held when this hook is called. + * Signature:\code{.c} + * int my_hook(int s, struct lwip_sock *sock, int level, int optname, const void *optval, socklen_t optlen, int *err) + * \endcode + * Arguments: + * - s: socket file descriptor + * - sock: internal socket descriptor (see lwip/priv/sockets_priv.h) + * - level: protocol level at which the option resides + * - optname: option to set + * - optval: value to set + * - optlen: size of optval + * - err: output error + * Return values: + * - 0: Hook has not consumed the option, code continues as normal (to internal options) + * - != 0: Hook has consumed the option, 'err' is returned + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_SOCKETS_SETSOCKOPT(s, sock, level, optname, optval, optlen, err) +#endif + +/** + * LWIP_HOOK_SOCKETS_GETSOCKOPT(s, sock, level, optname, optval, optlen, err) + * Called from socket API to implement getsockopt() for options not provided by lwIP. + * Core lock is held when this hook is called. + * Signature:\code{.c} + * int my_hook(int s, struct lwip_sock *sock, int level, int optname, void *optval, socklen_t *optlen, int *err) + * \endcode + * Arguments: + * - s: socket file descriptor + * - sock: internal socket descriptor (see lwip/priv/sockets_priv.h) + * - level: protocol level at which the option resides + * - optname: option to get + * - optval: value to get + * - optlen: size of optval + * - err: output error + * Return values: + * - 0: Hook has not consumed the option, code continues as normal (to internal options) + * - != 0: Hook has consumed the option, 'err' is returned + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_SOCKETS_GETSOCKOPT(s, sock, level, optname, optval, optlen, err) +#endif + +/** + * LWIP_HOOK_NETCONN_EXTERNAL_RESOLVE(name, addr, addrtype, err) + * Called from netconn APIs (not usable with callback apps) allowing an + * external DNS resolver (which uses sequential API) to handle the query. + * Signature:\code{.c} + * int my_hook(const char *name, ip_addr_t *addr, u8_t addrtype, err_t *err) + * \endcode + * Arguments: + * - name: hostname to resolve + * - addr: output host address + * - addrtype: type of address to query + * - err: output error + * Return values: + * - 0: Hook has not consumed hostname query, query continues into DNS module + * - != 0: Hook has consumed the query + * + * err must also be checked to determine if the hook consumed the query, but + * the query failed + */ +#ifdef __DOXYGEN__ +#define LWIP_HOOK_NETCONN_EXTERNAL_RESOLVE(name, addr, addrtype, err) +#endif +/** + * @} + */ + +/* + --------------------------------------- + ---------- Debugging options ---------- + --------------------------------------- +*/ +/** + * @defgroup lwip_opts_debugmsg Debug messages + * @ingroup lwip_opts_debug + * @{ + */ +/** + * LWIP_DBG_MIN_LEVEL: After masking, the value of the debug is + * compared against this value. If it is smaller, then debugging + * messages are written. + * @see debugging_levels + */ +#if !defined LWIP_DBG_MIN_LEVEL || defined __DOXYGEN__ +#define LWIP_DBG_MIN_LEVEL LWIP_DBG_LEVEL_ALL +#endif + +/** + * LWIP_DBG_TYPES_ON: A mask that can be used to globally enable/disable + * debug messages of certain types. + * @see debugging_levels + */ +#if !defined LWIP_DBG_TYPES_ON || defined __DOXYGEN__ +#define LWIP_DBG_TYPES_ON LWIP_DBG_ON +#endif + +/** + * ETHARP_DEBUG: Enable debugging in etharp.c. + */ +#if !defined ETHARP_DEBUG || defined __DOXYGEN__ +#define ETHARP_DEBUG LWIP_DBG_OFF +#endif + +/** + * NETIF_DEBUG: Enable debugging in netif.c. + */ +#if !defined NETIF_DEBUG || defined __DOXYGEN__ +#define NETIF_DEBUG LWIP_DBG_OFF +#endif + +/** + * PBUF_DEBUG: Enable debugging in pbuf.c. + */ +#if !defined PBUF_DEBUG || defined __DOXYGEN__ +#define PBUF_DEBUG LWIP_DBG_OFF +#endif + +/** + * API_LIB_DEBUG: Enable debugging in api_lib.c. + */ +#if !defined API_LIB_DEBUG || defined __DOXYGEN__ +#define API_LIB_DEBUG LWIP_DBG_OFF +#endif + +/** + * API_MSG_DEBUG: Enable debugging in api_msg.c. + */ +#if !defined API_MSG_DEBUG || defined __DOXYGEN__ +#define API_MSG_DEBUG LWIP_DBG_OFF +#endif + +/** + * SOCKETS_DEBUG: Enable debugging in sockets.c. + */ +#if !defined SOCKETS_DEBUG || defined __DOXYGEN__ +#define SOCKETS_DEBUG LWIP_DBG_OFF +#endif + +/** + * ICMP_DEBUG: Enable debugging in icmp.c. + */ +#if !defined ICMP_DEBUG || defined __DOXYGEN__ +#define ICMP_DEBUG LWIP_DBG_OFF +#endif + +/** + * IGMP_DEBUG: Enable debugging in igmp.c. + */ +#if !defined IGMP_DEBUG || defined __DOXYGEN__ +#define IGMP_DEBUG LWIP_DBG_OFF +#endif + +/** + * INET_DEBUG: Enable debugging in inet.c. + */ +#if !defined INET_DEBUG || defined __DOXYGEN__ +#define INET_DEBUG LWIP_DBG_OFF +#endif + +/** + * IP_DEBUG: Enable debugging for IP. + */ +#if !defined IP_DEBUG || defined __DOXYGEN__ +#define IP_DEBUG LWIP_DBG_OFF +#endif + +/** + * IP_REASS_DEBUG: Enable debugging in ip_frag.c for both frag & reass. + */ +#if !defined IP_REASS_DEBUG || defined __DOXYGEN__ +#define IP_REASS_DEBUG LWIP_DBG_OFF +#endif + +/** + * RAW_DEBUG: Enable debugging in raw.c. + */ +#if !defined RAW_DEBUG || defined __DOXYGEN__ +#define RAW_DEBUG LWIP_DBG_OFF +#endif + +/** + * MEM_DEBUG: Enable debugging in mem.c. + */ +#if !defined MEM_DEBUG || defined __DOXYGEN__ +#define MEM_DEBUG LWIP_DBG_OFF +#endif + +/** + * MEMP_DEBUG: Enable debugging in memp.c. + */ +#if !defined MEMP_DEBUG || defined __DOXYGEN__ +#define MEMP_DEBUG LWIP_DBG_OFF +#endif + +/** + * SYS_DEBUG: Enable debugging in sys.c. + */ +#if !defined SYS_DEBUG || defined __DOXYGEN__ +#define SYS_DEBUG LWIP_DBG_OFF +#endif + +/** + * TIMERS_DEBUG: Enable debugging in timers.c. + */ +#if !defined TIMERS_DEBUG || defined __DOXYGEN__ +#define TIMERS_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCP_DEBUG: Enable debugging for TCP. + */ +#if !defined TCP_DEBUG || defined __DOXYGEN__ +#define TCP_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCP_INPUT_DEBUG: Enable debugging in tcp_in.c for incoming debug. + */ +#if !defined TCP_INPUT_DEBUG || defined __DOXYGEN__ +#define TCP_INPUT_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCP_FR_DEBUG: Enable debugging in tcp_in.c for fast retransmit. + */ +#if !defined TCP_FR_DEBUG || defined __DOXYGEN__ +#define TCP_FR_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCP_RTO_DEBUG: Enable debugging in TCP for retransmit + * timeout. + */ +#if !defined TCP_RTO_DEBUG || defined __DOXYGEN__ +#define TCP_RTO_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCP_CWND_DEBUG: Enable debugging for TCP congestion window. + */ +#if !defined TCP_CWND_DEBUG || defined __DOXYGEN__ +#define TCP_CWND_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCP_WND_DEBUG: Enable debugging in tcp_in.c for window updating. + */ +#if !defined TCP_WND_DEBUG || defined __DOXYGEN__ +#define TCP_WND_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCP_OUTPUT_DEBUG: Enable debugging in tcp_out.c output functions. + */ +#if !defined TCP_OUTPUT_DEBUG || defined __DOXYGEN__ +#define TCP_OUTPUT_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCP_RST_DEBUG: Enable debugging for TCP with the RST message. + */ +#if !defined TCP_RST_DEBUG || defined __DOXYGEN__ +#define TCP_RST_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCP_QLEN_DEBUG: Enable debugging for TCP queue lengths. + */ +#if !defined TCP_QLEN_DEBUG || defined __DOXYGEN__ +#define TCP_QLEN_DEBUG LWIP_DBG_OFF +#endif + +/** + * UDP_DEBUG: Enable debugging in UDP. + */ +#if !defined UDP_DEBUG || defined __DOXYGEN__ +#define UDP_DEBUG LWIP_DBG_OFF +#endif + +/** + * TCPIP_DEBUG: Enable debugging in tcpip.c. + */ +#if !defined TCPIP_DEBUG || defined __DOXYGEN__ +#define TCPIP_DEBUG LWIP_DBG_OFF +#endif + +/** + * SLIP_DEBUG: Enable debugging in slipif.c. + */ +#if !defined SLIP_DEBUG || defined __DOXYGEN__ +#define SLIP_DEBUG LWIP_DBG_OFF +#endif + +/** + * DHCP_DEBUG: Enable debugging in dhcp.c. + */ +#if !defined DHCP_DEBUG || defined __DOXYGEN__ +#define DHCP_DEBUG LWIP_DBG_OFF +#endif + +/** + * AUTOIP_DEBUG: Enable debugging in autoip.c. + */ +#if !defined AUTOIP_DEBUG || defined __DOXYGEN__ +#define AUTOIP_DEBUG LWIP_DBG_OFF +#endif + +/** + * DNS_DEBUG: Enable debugging for DNS. + */ +#if !defined DNS_DEBUG || defined __DOXYGEN__ +#define DNS_DEBUG LWIP_DBG_OFF +#endif + +/** + * IP6_DEBUG: Enable debugging for IPv6. + */ +#if !defined IP6_DEBUG || defined __DOXYGEN__ +#define IP6_DEBUG LWIP_DBG_OFF +#endif + +/** + * DHCP6_DEBUG: Enable debugging in dhcp6.c. + */ +#if !defined DHCP6_DEBUG || defined __DOXYGEN__ +#define DHCP6_DEBUG LWIP_DBG_OFF +#endif +/** + * @} + */ + +/** + * LWIP_TESTMODE: Changes to make unit test possible + */ +#if !defined LWIP_TESTMODE +#define LWIP_TESTMODE 0 +#endif + +/* + -------------------------------------------------- + ---------- Performance tracking options ---------- + -------------------------------------------------- +*/ +/** + * @defgroup lwip_opts_perf Performance + * @ingroup lwip_opts_debug + * @{ + */ +/** + * LWIP_PERF: Enable performance testing for lwIP + * (if enabled, arch/perf.h is included) + */ +#if !defined LWIP_PERF || defined __DOXYGEN__ +#define LWIP_PERF 0 +#endif +/** + * @} + */ + +#endif /* LWIP_HDR_OPT_H */ diff --git a/Other/tun2socks/core/c/include/lwip/pbuf.h b/Other/tun2socks/core/c/include/lwip/pbuf.h new file mode 100644 index 0000000..82902a4 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/pbuf.h @@ -0,0 +1,322 @@ +/** + * @file + * pbuf API + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#ifndef LWIP_HDR_PBUF_H +#define LWIP_HDR_PBUF_H + +#include "lwip/opt.h" +#include "lwip/err.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** LWIP_SUPPORT_CUSTOM_PBUF==1: Custom pbufs behave much like their pbuf type + * but they are allocated by external code (initialised by calling + * pbuf_alloced_custom()) and when pbuf_free gives up their last reference, they + * are freed by calling pbuf_custom->custom_free_function(). + * Currently, the pbuf_custom code is only needed for one specific configuration + * of IP_FRAG, unless required by external driver/application code. */ +#ifndef LWIP_SUPPORT_CUSTOM_PBUF +#define LWIP_SUPPORT_CUSTOM_PBUF ((IP_FRAG && !LWIP_NETIF_TX_SINGLE_PBUF) || (LWIP_IPV6 && LWIP_IPV6_FRAG)) +#endif + +/** @ingroup pbuf + * PBUF_NEEDS_COPY(p): return a boolean value indicating whether the given + * pbuf needs to be copied in order to be kept around beyond the current call + * stack without risking being corrupted. The default setting provides safety: + * it will make a copy iof any pbuf chain that does not consist entirely of + * PBUF_ROM type pbufs. For setups with zero-copy support, it may be redefined + * to evaluate to true in all cases, for example. However, doing so also has an + * effect on the application side: any buffers that are *not* copied must also + * *not* be reused by the application after passing them to lwIP. For example, + * when setting PBUF_NEEDS_COPY to (0), after using udp_send() with a PBUF_RAM + * pbuf, the application must free the pbuf immediately, rather than reusing it + * for other purposes. For more background information on this, see tasks #6735 + * and #7896, and bugs #11400 and #49914. */ +#ifndef PBUF_NEEDS_COPY +#define PBUF_NEEDS_COPY(p) ((p)->type_internal & PBUF_TYPE_FLAG_DATA_VOLATILE) +#endif /* PBUF_NEEDS_COPY */ + +/* @todo: We need a mechanism to prevent wasting memory in every pbuf + (TCP vs. UDP, IPv4 vs. IPv6: UDP/IPv4 packets may waste up to 28 bytes) */ + +#define PBUF_TRANSPORT_HLEN 20 +#if LWIP_IPV6 +#define PBUF_IP_HLEN 40 +#else +#define PBUF_IP_HLEN 20 +#endif + +/** + * @ingroup pbuf + * Enumeration of pbuf layers + */ +typedef enum { + /** Includes spare room for transport layer header, e.g. UDP header. + * Use this if you intend to pass the pbuf to functions like udp_send(). + */ + PBUF_TRANSPORT = PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN, + /** Includes spare room for IP header. + * Use this if you intend to pass the pbuf to functions like raw_send(). + */ + PBUF_IP = PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN, + /** Includes spare room for link layer header (ethernet header). + * Use this if you intend to pass the pbuf to functions like ethernet_output(). + * @see PBUF_LINK_HLEN + */ + PBUF_LINK = PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN, + /** Includes spare room for additional encapsulation header before ethernet + * headers (e.g. 802.11). + * Use this if you intend to pass the pbuf to functions like netif->linkoutput(). + * @see PBUF_LINK_ENCAPSULATION_HLEN + */ + PBUF_RAW_TX = PBUF_LINK_ENCAPSULATION_HLEN, + /** Use this for input packets in a netif driver when calling netif->input() + * in the most common case - ethernet-layer netif driver. */ + PBUF_RAW = 0 +} pbuf_layer; + + +/* Base flags for pbuf_type definitions: */ + +/** Indicates that the payload directly follows the struct pbuf. + * This makes @ref pbuf_header work in both directions. */ +#define PBUF_TYPE_FLAG_STRUCT_DATA_CONTIGUOUS 0x80 +/** Indicates the data stored in this pbuf can change. If this pbuf needs + * to be queued, it must be copied/duplicated. */ +#define PBUF_TYPE_FLAG_DATA_VOLATILE 0x40 +/** 4 bits are reserved for 16 allocation sources (e.g. heap, pool1, pool2, etc) + * Internally, we use: 0=heap, 1=MEMP_PBUF, 2=MEMP_PBUF_POOL -> 13 types free*/ +#define PBUF_TYPE_ALLOC_SRC_MASK 0x0F +/** Indicates this pbuf is used for RX (if not set, indicates use for TX). + * This information can be used to keep some spare RX buffers e.g. for + * receiving TCP ACKs to unblock a connection) */ +#define PBUF_ALLOC_FLAG_RX 0x0100 +/** Indicates the application needs the pbuf payload to be in one piece */ +#define PBUF_ALLOC_FLAG_DATA_CONTIGUOUS 0x0200 + +#define PBUF_TYPE_ALLOC_SRC_MASK_STD_HEAP 0x00 +#define PBUF_TYPE_ALLOC_SRC_MASK_STD_MEMP_PBUF 0x01 +#define PBUF_TYPE_ALLOC_SRC_MASK_STD_MEMP_PBUF_POOL 0x02 +/** First pbuf allocation type for applications */ +#define PBUF_TYPE_ALLOC_SRC_MASK_APP_MIN 0x03 +/** Last pbuf allocation type for applications */ +#define PBUF_TYPE_ALLOC_SRC_MASK_APP_MAX PBUF_TYPE_ALLOC_SRC_MASK + +/** + * @ingroup pbuf + * Enumeration of pbuf types + */ +typedef enum { + /** pbuf data is stored in RAM, used for TX mostly, struct pbuf and its payload + are allocated in one piece of contiguous memory (so the first payload byte + can be calculated from struct pbuf). + pbuf_alloc() allocates PBUF_RAM pbufs as unchained pbufs (although that might + change in future versions). + This should be used for all OUTGOING packets (TX).*/ + PBUF_RAM = (PBUF_ALLOC_FLAG_DATA_CONTIGUOUS | PBUF_TYPE_FLAG_STRUCT_DATA_CONTIGUOUS | PBUF_TYPE_ALLOC_SRC_MASK_STD_HEAP), + /** pbuf data is stored in ROM, i.e. struct pbuf and its payload are located in + totally different memory areas. Since it points to ROM, payload does not + have to be copied when queued for transmission. */ + PBUF_ROM = PBUF_TYPE_ALLOC_SRC_MASK_STD_MEMP_PBUF, + /** pbuf comes from the pbuf pool. Much like PBUF_ROM but payload might change + so it has to be duplicated when queued before transmitting, depending on + who has a 'ref' to it. */ + PBUF_REF = (PBUF_TYPE_FLAG_DATA_VOLATILE | PBUF_TYPE_ALLOC_SRC_MASK_STD_MEMP_PBUF), + /** pbuf payload refers to RAM. This one comes from a pool and should be used + for RX. Payload can be chained (scatter-gather RX) but like PBUF_RAM, struct + pbuf and its payload are allocated in one piece of contiguous memory (so + the first payload byte can be calculated from struct pbuf). + Don't use this for TX, if the pool becomes empty e.g. because of TCP queuing, + you are unable to receive TCP acks! */ + PBUF_POOL = (PBUF_ALLOC_FLAG_RX | PBUF_TYPE_FLAG_STRUCT_DATA_CONTIGUOUS | PBUF_TYPE_ALLOC_SRC_MASK_STD_MEMP_PBUF_POOL) +} pbuf_type; + + +/** indicates this packet's data should be immediately passed to the application */ +#define PBUF_FLAG_PUSH 0x01U +/** indicates this is a custom pbuf: pbuf_free calls pbuf_custom->custom_free_function() + when the last reference is released (plus custom PBUF_RAM cannot be trimmed) */ +#define PBUF_FLAG_IS_CUSTOM 0x02U +/** indicates this pbuf is UDP multicast to be looped back */ +#define PBUF_FLAG_MCASTLOOP 0x04U +/** indicates this pbuf was received as link-level broadcast */ +#define PBUF_FLAG_LLBCAST 0x08U +/** indicates this pbuf was received as link-level multicast */ +#define PBUF_FLAG_LLMCAST 0x10U +/** indicates this pbuf includes a TCP FIN flag */ +#define PBUF_FLAG_TCP_FIN 0x20U + +/** Main packet buffer struct */ +struct pbuf { + /** next pbuf in singly linked pbuf chain */ + struct pbuf *next; + + /** pointer to the actual data in the buffer */ + void *payload; + + /** + * total length of this buffer and all next buffers in chain + * belonging to the same packet. + * + * For non-queue packet chains this is the invariant: + * p->tot_len == p->len + (p->next? p->next->tot_len: 0) + */ + u16_t tot_len; + + /** length of this buffer */ + u16_t len; + + /** a bit field indicating pbuf type and allocation sources + (see PBUF_TYPE_FLAG_*, PBUF_ALLOC_FLAG_* and PBUF_TYPE_ALLOC_SRC_MASK) + */ + u8_t type_internal; + + /** misc flags */ + u8_t flags; + + /** + * the reference count always equals the number of pointers + * that refer to this pbuf. This can be pointers from an application, + * the stack itself, or pbuf->next pointers from a chain. + */ + LWIP_PBUF_REF_T ref; + + /** For incoming packets, this contains the input netif's index */ + u8_t if_idx; +}; + + +/** Helper struct for const-correctness only. + * The only meaning of this one is to provide a const payload pointer + * for PBUF_ROM type. + */ +struct pbuf_rom { + /** next pbuf in singly linked pbuf chain */ + struct pbuf *next; + + /** pointer to the actual data in the buffer */ + const void *payload; +}; + +#if LWIP_SUPPORT_CUSTOM_PBUF +/** Prototype for a function to free a custom pbuf */ +typedef void (*pbuf_free_custom_fn)(struct pbuf *p); + +/** A custom pbuf: like a pbuf, but following a function pointer to free it. */ +struct pbuf_custom { + /** The actual pbuf */ + struct pbuf pbuf; + /** This function is called when pbuf_free deallocates this pbuf(_custom) */ + pbuf_free_custom_fn custom_free_function; +}; +#endif /* LWIP_SUPPORT_CUSTOM_PBUF */ + +/** Define this to 0 to prevent freeing ooseq pbufs when the PBUF_POOL is empty */ +#ifndef PBUF_POOL_FREE_OOSEQ +#define PBUF_POOL_FREE_OOSEQ 1 +#endif /* PBUF_POOL_FREE_OOSEQ */ +#if LWIP_TCP && TCP_QUEUE_OOSEQ && NO_SYS && PBUF_POOL_FREE_OOSEQ +extern volatile u8_t pbuf_free_ooseq_pending; +void pbuf_free_ooseq(void); +/** When not using sys_check_timeouts(), call PBUF_CHECK_FREE_OOSEQ() + at regular intervals from main level to check if ooseq pbufs need to be + freed! */ +#define PBUF_CHECK_FREE_OOSEQ() do { if(pbuf_free_ooseq_pending) { \ + /* pbuf_alloc() reported PBUF_POOL to be empty -> try to free some \ + ooseq queued pbufs now */ \ + pbuf_free_ooseq(); }}while(0) +#else /* LWIP_TCP && TCP_QUEUE_OOSEQ && NO_SYS && PBUF_POOL_FREE_OOSEQ */ + /* Otherwise declare an empty PBUF_CHECK_FREE_OOSEQ */ + #define PBUF_CHECK_FREE_OOSEQ() +#endif /* LWIP_TCP && TCP_QUEUE_OOSEQ && NO_SYS && PBUF_POOL_FREE_OOSEQ*/ + +/* Initializes the pbuf module. This call is empty for now, but may not be in future. */ +#define pbuf_init() + +struct pbuf *pbuf_alloc(pbuf_layer l, u16_t length, pbuf_type type); +struct pbuf *pbuf_alloc_reference(void *payload, u16_t length, pbuf_type type); +#if LWIP_SUPPORT_CUSTOM_PBUF +struct pbuf *pbuf_alloced_custom(pbuf_layer l, u16_t length, pbuf_type type, + struct pbuf_custom *p, void *payload_mem, + u16_t payload_mem_len); +#endif /* LWIP_SUPPORT_CUSTOM_PBUF */ +void pbuf_realloc(struct pbuf *p, u16_t size); +#define pbuf_get_allocsrc(p) ((p)->type_internal & PBUF_TYPE_ALLOC_SRC_MASK) +#define pbuf_match_allocsrc(p, type) (pbuf_get_allocsrc(p) == ((type) & PBUF_TYPE_ALLOC_SRC_MASK)) +#define pbuf_match_type(p, type) pbuf_match_allocsrc(p, type) +u8_t pbuf_header(struct pbuf *p, s16_t header_size); +u8_t pbuf_header_force(struct pbuf *p, s16_t header_size); +u8_t pbuf_add_header(struct pbuf *p, size_t header_size_increment); +u8_t pbuf_add_header_force(struct pbuf *p, size_t header_size_increment); +u8_t pbuf_remove_header(struct pbuf *p, size_t header_size); +struct pbuf *pbuf_free_header(struct pbuf *q, u16_t size); +void pbuf_ref(struct pbuf *p); +u8_t pbuf_free(struct pbuf *p); +u16_t pbuf_clen(const struct pbuf *p); +void pbuf_cat(struct pbuf *head, struct pbuf *tail); +void pbuf_chain(struct pbuf *head, struct pbuf *tail); +struct pbuf *pbuf_dechain(struct pbuf *p); +err_t pbuf_copy(struct pbuf *p_to, const struct pbuf *p_from); +u16_t pbuf_copy_partial(const struct pbuf *p, void *dataptr, u16_t len, u16_t offset); +void *pbuf_get_contiguous(const struct pbuf *p, void *buffer, size_t bufsize, u16_t len, u16_t offset); +err_t pbuf_take(struct pbuf *buf, const void *dataptr, u16_t len); +err_t pbuf_take_at(struct pbuf *buf, const void *dataptr, u16_t len, u16_t offset); +struct pbuf *pbuf_skip(struct pbuf* in, u16_t in_offset, u16_t* out_offset); +struct pbuf *pbuf_coalesce(struct pbuf *p, pbuf_layer layer); +struct pbuf *pbuf_clone(pbuf_layer l, pbuf_type type, struct pbuf *p); +#if LWIP_CHECKSUM_ON_COPY +err_t pbuf_fill_chksum(struct pbuf *p, u16_t start_offset, const void *dataptr, + u16_t len, u16_t *chksum); +#endif /* LWIP_CHECKSUM_ON_COPY */ +#if LWIP_TCP && TCP_QUEUE_OOSEQ && LWIP_WND_SCALE +void pbuf_split_64k(struct pbuf *p, struct pbuf **rest); +#endif /* LWIP_TCP && TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */ + +u8_t pbuf_get_at(const struct pbuf* p, u16_t offset); +int pbuf_try_get_at(const struct pbuf* p, u16_t offset); +void pbuf_put_at(struct pbuf* p, u16_t offset, u8_t data); +u16_t pbuf_memcmp(const struct pbuf* p, u16_t offset, const void* s2, u16_t n); +u16_t pbuf_memfind(const struct pbuf* p, const void* mem, u16_t mem_len, u16_t start_offset); +u16_t pbuf_strstr(const struct pbuf* p, const char* substr); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PBUF_H */ diff --git a/Other/tun2socks/core/c/include/lwip/priv/altcp_priv.h b/Other/tun2socks/core/c/include/lwip/priv/altcp_priv.h new file mode 100644 index 0000000..2d3b2fd --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/altcp_priv.h @@ -0,0 +1,146 @@ +/** + * @file + * Application layered TCP connection API (to be used from TCPIP thread)\n + * This interface mimics the tcp callback API to the application while preventing + * direct linking (much like virtual functions). + * This way, an application can make use of other application layer protocols + * on top of TCP without knowing the details (e.g. TLS, proxy connection). + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_ALTCP_PRIV_H +#define LWIP_HDR_ALTCP_PRIV_H + +#include "lwip/opt.h" + +#if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/altcp.h" +#include "lwip/ip_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct altcp_pcb *altcp_alloc(void); +void altcp_free(struct altcp_pcb *conn); + +/* Function prototypes for application layers */ +typedef void (*altcp_set_poll_fn)(struct altcp_pcb *conn, u8_t interval); +typedef void (*altcp_recved_fn)(struct altcp_pcb *conn, u16_t len); +typedef err_t (*altcp_bind_fn)(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port); +typedef err_t (*altcp_connect_fn)(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port, altcp_connected_fn connected); + +typedef struct altcp_pcb *(*altcp_listen_fn)(struct altcp_pcb *conn, u8_t backlog, err_t *err); + +typedef void (*altcp_abort_fn)(struct altcp_pcb *conn); +typedef err_t (*altcp_close_fn)(struct altcp_pcb *conn); +typedef err_t (*altcp_shutdown_fn)(struct altcp_pcb *conn, int shut_rx, int shut_tx); + +typedef err_t (*altcp_write_fn)(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t apiflags); +typedef err_t (*altcp_output_fn)(struct altcp_pcb *conn); + +typedef u16_t (*altcp_mss_fn)(struct altcp_pcb *conn); +typedef u16_t (*altcp_sndbuf_fn)(struct altcp_pcb *conn); +typedef u16_t (*altcp_sndqueuelen_fn)(struct altcp_pcb *conn); +typedef void (*altcp_nagle_disable_fn)(struct altcp_pcb *conn); +typedef void (*altcp_nagle_enable_fn)(struct altcp_pcb *conn); +typedef int (*altcp_nagle_disabled_fn)(struct altcp_pcb *conn); + +typedef void (*altcp_setprio_fn)(struct altcp_pcb *conn, u8_t prio); + +typedef void (*altcp_dealloc_fn)(struct altcp_pcb *conn); + +typedef err_t (*altcp_get_tcp_addrinfo_fn)(struct altcp_pcb *conn, int local, ip_addr_t *addr, u16_t *port); +typedef ip_addr_t *(*altcp_get_ip_fn)(struct altcp_pcb *conn, int local); +typedef u16_t (*altcp_get_port_fn)(struct altcp_pcb *conn, int local); + +#ifdef LWIP_DEBUG +typedef enum tcp_state (*altcp_dbg_get_tcp_state_fn)(struct altcp_pcb *conn); +#endif + +struct altcp_functions { + altcp_set_poll_fn set_poll; + altcp_recved_fn recved; + altcp_bind_fn bind; + altcp_connect_fn connect; + altcp_listen_fn listen; + altcp_abort_fn abort; + altcp_close_fn close; + altcp_shutdown_fn shutdown; + altcp_write_fn write; + altcp_output_fn output; + altcp_mss_fn mss; + altcp_sndbuf_fn sndbuf; + altcp_sndqueuelen_fn sndqueuelen; + altcp_nagle_disable_fn nagle_disable; + altcp_nagle_enable_fn nagle_enable; + altcp_nagle_disabled_fn nagle_disabled; + altcp_setprio_fn setprio; + altcp_dealloc_fn dealloc; + altcp_get_tcp_addrinfo_fn addrinfo; + altcp_get_ip_fn getip; + altcp_get_port_fn getport; +#ifdef LWIP_DEBUG + altcp_dbg_get_tcp_state_fn dbg_get_tcp_state; +#endif +}; + +void altcp_default_set_poll(struct altcp_pcb *conn, u8_t interval); +void altcp_default_recved(struct altcp_pcb *conn, u16_t len); +err_t altcp_default_bind(struct altcp_pcb *conn, const ip_addr_t *ipaddr, u16_t port); +err_t altcp_default_shutdown(struct altcp_pcb *conn, int shut_rx, int shut_tx); +err_t altcp_default_write(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t apiflags); +err_t altcp_default_output(struct altcp_pcb *conn); +u16_t altcp_default_mss(struct altcp_pcb *conn); +u16_t altcp_default_sndbuf(struct altcp_pcb *conn); +u16_t altcp_default_sndqueuelen(struct altcp_pcb *conn); +void altcp_default_nagle_disable(struct altcp_pcb *conn); +void altcp_default_nagle_enable(struct altcp_pcb *conn); +int altcp_default_nagle_disabled(struct altcp_pcb *conn); +void altcp_default_setprio(struct altcp_pcb *conn, u8_t prio); +void altcp_default_dealloc(struct altcp_pcb *conn); +err_t altcp_default_get_tcp_addrinfo(struct altcp_pcb *conn, int local, ip_addr_t *addr, u16_t *port); +ip_addr_t *altcp_default_get_ip(struct altcp_pcb *conn, int local); +u16_t altcp_default_get_port(struct altcp_pcb *conn, int local); +#ifdef LWIP_DEBUG +enum tcp_state altcp_default_dbg_get_tcp_state(struct altcp_pcb *conn); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_ALTCP */ + +#endif /* LWIP_HDR_ALTCP_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/priv/api_msg.h b/Other/tun2socks/core/c/include/lwip/priv/api_msg.h new file mode 100644 index 0000000..9e8ffc9 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/api_msg.h @@ -0,0 +1,272 @@ +/** + * @file + * netconn API lwIP internal implementations (do not use in application code) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_API_MSG_H +#define LWIP_HDR_API_MSG_H + +#include "lwip/opt.h" + +#include "lwip/arch.h" +#include "lwip/ip_addr.h" +#include "lwip/err.h" +#include "lwip/sys.h" +#include "lwip/igmp.h" +#include "lwip/api.h" +#include "lwip/priv/tcpip_priv.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_NETCONN || LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ +/* Note: Netconn API is always available when sockets are enabled - + * sockets are implemented on top of them */ + +#if LWIP_MPU_COMPATIBLE +#if LWIP_NETCONN_SEM_PER_THREAD +#define API_MSG_M_DEF_SEM(m) *m +#else +#define API_MSG_M_DEF_SEM(m) API_MSG_M_DEF(m) +#endif +#else /* LWIP_MPU_COMPATIBLE */ +#define API_MSG_M_DEF_SEM(m) API_MSG_M_DEF(m) +#endif /* LWIP_MPU_COMPATIBLE */ + +/* For the netconn API, these values are use as a bitmask! */ +#define NETCONN_SHUT_RD 1 +#define NETCONN_SHUT_WR 2 +#define NETCONN_SHUT_RDWR (NETCONN_SHUT_RD | NETCONN_SHUT_WR) + +/* IP addresses and port numbers are expected to be in + * the same byte order as in the corresponding pcb. + */ +/** This struct includes everything that is necessary to execute a function + for a netconn in another thread context (mainly used to process netconns + in the tcpip_thread context to be thread safe). */ +struct api_msg { + /** The netconn which to process - always needed: it includes the semaphore + which is used to block the application thread until the function finished. */ + struct netconn *conn; + /** The return value of the function executed in tcpip_thread. */ + err_t err; + /** Depending on the executed function, one of these union members is used */ + union { + /** used for lwip_netconn_do_send */ + struct netbuf *b; + /** used for lwip_netconn_do_newconn */ + struct { + u8_t proto; + } n; + /** used for lwip_netconn_do_bind and lwip_netconn_do_connect */ + struct { + API_MSG_M_DEF_C(ip_addr_t, ipaddr); + u16_t port; + u8_t if_idx; + } bc; + /** used for lwip_netconn_do_getaddr */ + struct { + ip_addr_t API_MSG_M_DEF(ipaddr); + u16_t API_MSG_M_DEF(port); + u8_t local; + } ad; + /** used for lwip_netconn_do_write */ + struct { + /** current vector to write */ + const struct netvector *vector; + /** number of unwritten vectors */ + u16_t vector_cnt; + /** offset into current vector */ + size_t vector_off; + /** total length across vectors */ + size_t len; + /** offset into total length/output of bytes written when err == ERR_OK */ + size_t offset; + u8_t apiflags; +#if LWIP_SO_SNDTIMEO + u32_t time_started; +#endif /* LWIP_SO_SNDTIMEO */ + } w; + /** used for lwip_netconn_do_recv */ + struct { + size_t len; + } r; +#if LWIP_TCP + /** used for lwip_netconn_do_close (/shutdown) */ + struct { + u8_t shut; +#if LWIP_SO_SNDTIMEO || LWIP_SO_LINGER + u32_t time_started; +#else /* LWIP_SO_SNDTIMEO || LWIP_SO_LINGER */ + u8_t polls_left; +#endif /* LWIP_SO_SNDTIMEO || LWIP_SO_LINGER */ + } sd; +#endif /* LWIP_TCP */ +#if LWIP_IGMP || (LWIP_IPV6 && LWIP_IPV6_MLD) + /** used for lwip_netconn_do_join_leave_group */ + struct { + API_MSG_M_DEF_C(ip_addr_t, multiaddr); + API_MSG_M_DEF_C(ip_addr_t, netif_addr); + u8_t if_idx; + enum netconn_igmp join_or_leave; + } jl; +#endif /* LWIP_IGMP || (LWIP_IPV6 && LWIP_IPV6_MLD) */ +#if TCP_LISTEN_BACKLOG + struct { + u8_t backlog; + } lb; +#endif /* TCP_LISTEN_BACKLOG */ + } msg; +#if LWIP_NETCONN_SEM_PER_THREAD + sys_sem_t* op_completed_sem; +#endif /* LWIP_NETCONN_SEM_PER_THREAD */ +}; + +#if LWIP_NETCONN_SEM_PER_THREAD +#define LWIP_API_MSG_SEM(msg) ((msg)->op_completed_sem) +#else /* LWIP_NETCONN_SEM_PER_THREAD */ +#define LWIP_API_MSG_SEM(msg) (&(msg)->conn->op_completed) +#endif /* LWIP_NETCONN_SEM_PER_THREAD */ + + +#if LWIP_DNS +/** As lwip_netconn_do_gethostbyname requires more arguments but doesn't require a netconn, + it has its own struct (to avoid struct api_msg getting bigger than necessary). + lwip_netconn_do_gethostbyname must be called using tcpip_callback instead of tcpip_apimsg + (see netconn_gethostbyname). */ +struct dns_api_msg { + /** Hostname to query or dotted IP address string */ +#if LWIP_MPU_COMPATIBLE + char name[DNS_MAX_NAME_LENGTH]; +#else /* LWIP_MPU_COMPATIBLE */ + const char *name; +#endif /* LWIP_MPU_COMPATIBLE */ + /** The resolved address is stored here */ + ip_addr_t API_MSG_M_DEF(addr); +#if LWIP_IPV4 && LWIP_IPV6 + /** Type of resolve call */ + u8_t dns_addrtype; +#endif /* LWIP_IPV4 && LWIP_IPV6 */ + /** This semaphore is posted when the name is resolved, the application thread + should wait on it. */ + sys_sem_t API_MSG_M_DEF_SEM(sem); + /** Errors are given back here */ + err_t API_MSG_M_DEF(err); +}; +#endif /* LWIP_DNS */ + +#if LWIP_NETCONN_FULLDUPLEX +int lwip_netconn_is_deallocated_msg(void *msg); +#endif +int lwip_netconn_is_err_msg(void *msg, err_t *err); +void lwip_netconn_do_newconn (void *m); +void lwip_netconn_do_delconn (void *m); +void lwip_netconn_do_bind (void *m); +void lwip_netconn_do_bind_if (void *m); +void lwip_netconn_do_connect (void *m); +void lwip_netconn_do_disconnect (void *m); +void lwip_netconn_do_listen (void *m); +void lwip_netconn_do_send (void *m); +void lwip_netconn_do_recv (void *m); +#if TCP_LISTEN_BACKLOG +void lwip_netconn_do_accepted (void *m); +#endif /* TCP_LISTEN_BACKLOG */ +void lwip_netconn_do_write (void *m); +void lwip_netconn_do_getaddr (void *m); +void lwip_netconn_do_close (void *m); +void lwip_netconn_do_shutdown (void *m); +#if LWIP_IGMP || (LWIP_IPV6 && LWIP_IPV6_MLD) +void lwip_netconn_do_join_leave_group(void *m); +void lwip_netconn_do_join_leave_group_netif(void *m); +#endif /* LWIP_IGMP || (LWIP_IPV6 && LWIP_IPV6_MLD) */ + +#if LWIP_DNS +void lwip_netconn_do_gethostbyname(void *arg); +#endif /* LWIP_DNS */ + +struct netconn* netconn_alloc(enum netconn_type t, netconn_callback callback); +void netconn_free(struct netconn *conn); + +#endif /* LWIP_NETCONN || LWIP_SOCKET */ + +#if LWIP_NETIF_API /* don't build if not configured for use in lwipopts.h */ + +/* netifapi related lwIP internal definitions */ + +#if LWIP_MPU_COMPATIBLE +#define NETIFAPI_IPADDR_DEF(type, m) type m +#else /* LWIP_MPU_COMPATIBLE */ +#define NETIFAPI_IPADDR_DEF(type, m) const type * m +#endif /* LWIP_MPU_COMPATIBLE */ + +typedef void (*netifapi_void_fn)(struct netif *netif); +typedef err_t (*netifapi_errt_fn)(struct netif *netif); + +struct netifapi_msg { + struct tcpip_api_call_data call; + struct netif *netif; + union { + struct { +#if LWIP_IPV4 + NETIFAPI_IPADDR_DEF(ip4_addr_t, ipaddr); + NETIFAPI_IPADDR_DEF(ip4_addr_t, netmask); + NETIFAPI_IPADDR_DEF(ip4_addr_t, gw); +#endif /* LWIP_IPV4 */ + void *state; + netif_init_fn init; + netif_input_fn input; + } add; + struct { + netifapi_void_fn voidfunc; + netifapi_errt_fn errtfunc; + } common; + struct { +#if LWIP_MPU_COMPATIBLE + char name[NETIF_NAMESIZE]; +#else /* LWIP_MPU_COMPATIBLE */ + char *name; +#endif /* LWIP_MPU_COMPATIBLE */ + u8_t index; + } ifs; + } msg; +}; + +#endif /* LWIP_NETIF_API */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_API_MSG_H */ diff --git a/Other/tun2socks/core/c/include/lwip/priv/mem_priv.h b/Other/tun2socks/core/c/include/lwip/priv/mem_priv.h new file mode 100644 index 0000000..8630d75 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/mem_priv.h @@ -0,0 +1,84 @@ +/** + * @file + * lwIP internal memory implementations (do not use in application code) + */ + +/* + * Copyright (c) 2018 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ + +#ifndef LWIP_HDR_MEM_PRIV_H +#define LWIP_HDR_MEM_PRIV_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#include "lwip/mem.h" + +#if MEM_OVERFLOW_CHECK || MEMP_OVERFLOW_CHECK +/* if MEM_OVERFLOW_CHECK or MEMP_OVERFLOW_CHECK is turned on, we reserve some + * bytes at the beginning and at the end of each element, initialize them as + * 0xcd and check them later. + * If MEM(P)_OVERFLOW_CHECK is >= 2, on every call to mem(p)_malloc or mem(p)_free, + * every single element in each pool/heap is checked! + * This is VERY SLOW but also very helpful. + * MEM_SANITY_REGION_BEFORE and MEM_SANITY_REGION_AFTER can be overridden in + * lwipopts.h to change the amount reserved for checking. */ +#ifndef MEM_SANITY_REGION_BEFORE +#define MEM_SANITY_REGION_BEFORE 16 +#endif /* MEM_SANITY_REGION_BEFORE*/ +#if MEM_SANITY_REGION_BEFORE > 0 +#define MEM_SANITY_REGION_BEFORE_ALIGNED LWIP_MEM_ALIGN_SIZE(MEM_SANITY_REGION_BEFORE) +#else +#define MEM_SANITY_REGION_BEFORE_ALIGNED 0 +#endif /* MEM_SANITY_REGION_BEFORE*/ +#ifndef MEM_SANITY_REGION_AFTER +#define MEM_SANITY_REGION_AFTER 16 +#endif /* MEM_SANITY_REGION_AFTER*/ +#if MEM_SANITY_REGION_AFTER > 0 +#define MEM_SANITY_REGION_AFTER_ALIGNED LWIP_MEM_ALIGN_SIZE(MEM_SANITY_REGION_AFTER) +#else +#define MEM_SANITY_REGION_AFTER_ALIGNED 0 +#endif /* MEM_SANITY_REGION_AFTER*/ + +void mem_overflow_init_raw(void *p, size_t size); +void mem_overflow_check_raw(void *p, size_t size, const char *descr1, const char *descr2); + +#endif /* MEM_OVERFLOW_CHECK || MEMP_OVERFLOW_CHECK */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_MEMP_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/priv/memp_priv.h b/Other/tun2socks/core/c/include/lwip/priv/memp_priv.h new file mode 100644 index 0000000..1f14cb1 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/memp_priv.h @@ -0,0 +1,161 @@ +/** + * @file + * memory pools lwIP internal implementations (do not use in application code) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#ifndef LWIP_HDR_MEMP_PRIV_H +#define LWIP_HDR_MEMP_PRIV_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#include "lwip/mem.h" +#include "lwip/priv/mem_priv.h" + +#if MEMP_OVERFLOW_CHECK + + +/* MEMP_SIZE: save space for struct memp and for sanity check */ +#define MEMP_SIZE (LWIP_MEM_ALIGN_SIZE(sizeof(struct memp)) + MEM_SANITY_REGION_BEFORE_ALIGNED) +#define MEMP_ALIGN_SIZE(x) (LWIP_MEM_ALIGN_SIZE(x) + MEM_SANITY_REGION_AFTER_ALIGNED) + +#else /* MEMP_OVERFLOW_CHECK */ + +/* No sanity checks + * We don't need to preserve the struct memp while not allocated, so we + * can save a little space and set MEMP_SIZE to 0. + */ +#define MEMP_SIZE 0 +#define MEMP_ALIGN_SIZE(x) (LWIP_MEM_ALIGN_SIZE(x)) + +#endif /* MEMP_OVERFLOW_CHECK */ + +#if !MEMP_MEM_MALLOC || MEMP_OVERFLOW_CHECK +struct memp { + struct memp *next; +#if MEMP_OVERFLOW_CHECK + const char *file; + int line; +#endif /* MEMP_OVERFLOW_CHECK */ +}; +#endif /* !MEMP_MEM_MALLOC || MEMP_OVERFLOW_CHECK */ + +#if MEM_USE_POOLS && MEMP_USE_CUSTOM_POOLS +/* Use a helper type to get the start and end of the user "memory pools" for mem_malloc */ +typedef enum { + /* Get the first (via: + MEMP_POOL_HELPER_START = ((u8_t) 1*MEMP_POOL_A + 0*MEMP_POOL_B + 0*MEMP_POOL_C + 0)*/ + MEMP_POOL_HELPER_FIRST = ((u8_t) +#define LWIP_MEMPOOL(name,num,size,desc) +#define LWIP_MALLOC_MEMPOOL_START 1 +#define LWIP_MALLOC_MEMPOOL(num, size) * MEMP_POOL_##size + 0 +#define LWIP_MALLOC_MEMPOOL_END +#include "lwip/priv/memp_std.h" + ) , + /* Get the last (via: + MEMP_POOL_HELPER_END = ((u8_t) 0 + MEMP_POOL_A*0 + MEMP_POOL_B*0 + MEMP_POOL_C*1) */ + MEMP_POOL_HELPER_LAST = ((u8_t) +#define LWIP_MEMPOOL(name,num,size,desc) +#define LWIP_MALLOC_MEMPOOL_START +#define LWIP_MALLOC_MEMPOOL(num, size) 0 + MEMP_POOL_##size * +#define LWIP_MALLOC_MEMPOOL_END 1 +#include "lwip/priv/memp_std.h" + ) +} memp_pool_helper_t; + +/* The actual start and stop values are here (cast them over) + We use this helper type and these defines so we can avoid using const memp_t values */ +#define MEMP_POOL_FIRST ((memp_t) MEMP_POOL_HELPER_FIRST) +#define MEMP_POOL_LAST ((memp_t) MEMP_POOL_HELPER_LAST) +#endif /* MEM_USE_POOLS && MEMP_USE_CUSTOM_POOLS */ + +/** Memory pool descriptor */ +struct memp_desc { +#if defined(LWIP_DEBUG) || MEMP_OVERFLOW_CHECK || LWIP_STATS_DISPLAY + /** Textual description */ + const char *desc; +#endif /* LWIP_DEBUG || MEMP_OVERFLOW_CHECK || LWIP_STATS_DISPLAY */ +#if MEMP_STATS + /** Statistics */ + struct stats_mem *stats; +#endif + + /** Element size */ + u16_t size; + +#if !MEMP_MEM_MALLOC + /** Number of elements */ + u16_t num; + + /** Base address */ + u8_t *base; + + /** First free element of each pool. Elements form a linked list. */ + struct memp **tab; +#endif /* MEMP_MEM_MALLOC */ +}; + +#if defined(LWIP_DEBUG) || MEMP_OVERFLOW_CHECK || LWIP_STATS_DISPLAY +#define DECLARE_LWIP_MEMPOOL_DESC(desc) (desc), +#else +#define DECLARE_LWIP_MEMPOOL_DESC(desc) +#endif + +#if MEMP_STATS +#define LWIP_MEMPOOL_DECLARE_STATS_INSTANCE(name) static struct stats_mem name; +#define LWIP_MEMPOOL_DECLARE_STATS_REFERENCE(name) &name, +#else +#define LWIP_MEMPOOL_DECLARE_STATS_INSTANCE(name) +#define LWIP_MEMPOOL_DECLARE_STATS_REFERENCE(name) +#endif + +void memp_init_pool(const struct memp_desc *desc); + +#if MEMP_OVERFLOW_CHECK +void *memp_malloc_pool_fn(const struct memp_desc* desc, const char* file, const int line); +#define memp_malloc_pool(d) memp_malloc_pool_fn((d), __FILE__, __LINE__) +#else +void *memp_malloc_pool(const struct memp_desc *desc); +#endif +void memp_free_pool(const struct memp_desc* desc, void *mem); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_MEMP_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/priv/memp_std.h b/Other/tun2socks/core/c/include/lwip/priv/memp_std.h new file mode 100644 index 0000000..669ad4d --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/memp_std.h @@ -0,0 +1,153 @@ +/** + * @file + * lwIP internal memory pools (do not use in application code) + * This file is deliberately included multiple times: once with empty + * definition of LWIP_MEMPOOL() to handle all includes and multiple times + * to build up various lists of mem pools. + */ + +/* + * SETUP: Make sure we define everything we will need. + * + * We have create three types of pools: + * 1) MEMPOOL - standard pools + * 2) MALLOC_MEMPOOL - to be used by mem_malloc in mem.c + * 3) PBUF_MEMPOOL - a mempool of pbuf's, so include space for the pbuf struct + * + * If the include'r doesn't require any special treatment of each of the types + * above, then will declare #2 & #3 to be just standard mempools. + */ +#ifndef LWIP_MALLOC_MEMPOOL +/* This treats "malloc pools" just like any other pool. + The pools are a little bigger to provide 'size' as the amount of user data. */ +#define LWIP_MALLOC_MEMPOOL(num, size) LWIP_MEMPOOL(POOL_##size, num, (size + LWIP_MEM_ALIGN_SIZE(sizeof(struct memp_malloc_helper))), "MALLOC_"#size) +#define LWIP_MALLOC_MEMPOOL_START +#define LWIP_MALLOC_MEMPOOL_END +#endif /* LWIP_MALLOC_MEMPOOL */ + +#ifndef LWIP_PBUF_MEMPOOL +/* This treats "pbuf pools" just like any other pool. + * Allocates buffers for a pbuf struct AND a payload size */ +#define LWIP_PBUF_MEMPOOL(name, num, payload, desc) LWIP_MEMPOOL(name, num, (LWIP_MEM_ALIGN_SIZE(sizeof(struct pbuf)) + LWIP_MEM_ALIGN_SIZE(payload)), desc) +#endif /* LWIP_PBUF_MEMPOOL */ + + +/* + * A list of internal pools used by LWIP. + * + * LWIP_MEMPOOL(pool_name, number_elements, element_size, pool_description) + * creates a pool name MEMP_pool_name. description is used in stats.c + */ +#if LWIP_RAW +LWIP_MEMPOOL(RAW_PCB, MEMP_NUM_RAW_PCB, sizeof(struct raw_pcb), "RAW_PCB") +#endif /* LWIP_RAW */ + +#if LWIP_UDP +LWIP_MEMPOOL(UDP_PCB, MEMP_NUM_UDP_PCB, sizeof(struct udp_pcb), "UDP_PCB") +#endif /* LWIP_UDP */ + +#if LWIP_TCP +LWIP_MEMPOOL(TCP_PCB, MEMP_NUM_TCP_PCB, sizeof(struct tcp_pcb), "TCP_PCB") +LWIP_MEMPOOL(TCP_PCB_LISTEN, MEMP_NUM_TCP_PCB_LISTEN, sizeof(struct tcp_pcb_listen), "TCP_PCB_LISTEN") +LWIP_MEMPOOL(TCP_SEG, MEMP_NUM_TCP_SEG, sizeof(struct tcp_seg), "TCP_SEG") +#endif /* LWIP_TCP */ + +#if LWIP_ALTCP && LWIP_TCP +LWIP_MEMPOOL(ALTCP_PCB, MEMP_NUM_ALTCP_PCB, sizeof(struct altcp_pcb), "ALTCP_PCB") +#endif /* LWIP_ALTCP && LWIP_TCP */ + +#if LWIP_IPV4 && IP_REASSEMBLY +LWIP_MEMPOOL(REASSDATA, MEMP_NUM_REASSDATA, sizeof(struct ip_reassdata), "REASSDATA") +#endif /* LWIP_IPV4 && IP_REASSEMBLY */ +#if (IP_FRAG && !LWIP_NETIF_TX_SINGLE_PBUF) || (LWIP_IPV6 && LWIP_IPV6_FRAG) +LWIP_MEMPOOL(FRAG_PBUF, MEMP_NUM_FRAG_PBUF, sizeof(struct pbuf_custom_ref),"FRAG_PBUF") +#endif /* IP_FRAG && !LWIP_NETIF_TX_SINGLE_PBUF || (LWIP_IPV6 && LWIP_IPV6_FRAG) */ + +#if LWIP_NETCONN || LWIP_SOCKET +LWIP_MEMPOOL(NETBUF, MEMP_NUM_NETBUF, sizeof(struct netbuf), "NETBUF") +LWIP_MEMPOOL(NETCONN, MEMP_NUM_NETCONN, sizeof(struct netconn), "NETCONN") +#endif /* LWIP_NETCONN || LWIP_SOCKET */ + +#if NO_SYS==0 +LWIP_MEMPOOL(TCPIP_MSG_API, MEMP_NUM_TCPIP_MSG_API, sizeof(struct tcpip_msg), "TCPIP_MSG_API") +#if LWIP_MPU_COMPATIBLE +LWIP_MEMPOOL(API_MSG, MEMP_NUM_API_MSG, sizeof(struct api_msg), "API_MSG") +#if LWIP_DNS +LWIP_MEMPOOL(DNS_API_MSG, MEMP_NUM_DNS_API_MSG, sizeof(struct dns_api_msg), "DNS_API_MSG") +#endif +#if LWIP_SOCKET && !LWIP_TCPIP_CORE_LOCKING +LWIP_MEMPOOL(SOCKET_SETGETSOCKOPT_DATA, MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA, sizeof(struct lwip_setgetsockopt_data), "SOCKET_SETGETSOCKOPT_DATA") +#endif +#if LWIP_SOCKET && (LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL) +LWIP_MEMPOOL(SELECT_CB, MEMP_NUM_SELECT_CB, sizeof(struct lwip_select_cb), "SELECT_CB") +#endif /* LWIP_SOCKET && (LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL) */ +#if LWIP_NETIF_API +LWIP_MEMPOOL(NETIFAPI_MSG, MEMP_NUM_NETIFAPI_MSG, sizeof(struct netifapi_msg), "NETIFAPI_MSG") +#endif +#endif /* LWIP_MPU_COMPATIBLE */ +#if !LWIP_TCPIP_CORE_LOCKING_INPUT +LWIP_MEMPOOL(TCPIP_MSG_INPKT,MEMP_NUM_TCPIP_MSG_INPKT, sizeof(struct tcpip_msg), "TCPIP_MSG_INPKT") +#endif /* !LWIP_TCPIP_CORE_LOCKING_INPUT */ +#endif /* NO_SYS==0 */ + +#if LWIP_IPV4 && LWIP_ARP && ARP_QUEUEING +LWIP_MEMPOOL(ARP_QUEUE, MEMP_NUM_ARP_QUEUE, sizeof(struct etharp_q_entry), "ARP_QUEUE") +#endif /* LWIP_IPV4 && LWIP_ARP && ARP_QUEUEING */ + +#if LWIP_IGMP +LWIP_MEMPOOL(IGMP_GROUP, MEMP_NUM_IGMP_GROUP, sizeof(struct igmp_group), "IGMP_GROUP") +#endif /* LWIP_IGMP */ + +#if LWIP_TIMERS && !LWIP_TIMERS_CUSTOM +LWIP_MEMPOOL(SYS_TIMEOUT, MEMP_NUM_SYS_TIMEOUT, sizeof(struct sys_timeo), "SYS_TIMEOUT") +#endif /* LWIP_TIMERS && !LWIP_TIMERS_CUSTOM */ + +#if LWIP_DNS && LWIP_SOCKET +LWIP_MEMPOOL(NETDB, MEMP_NUM_NETDB, NETDB_ELEM_SIZE, "NETDB") +#endif /* LWIP_DNS && LWIP_SOCKET */ +#if LWIP_DNS && DNS_LOCAL_HOSTLIST && DNS_LOCAL_HOSTLIST_IS_DYNAMIC +LWIP_MEMPOOL(LOCALHOSTLIST, MEMP_NUM_LOCALHOSTLIST, LOCALHOSTLIST_ELEM_SIZE, "LOCALHOSTLIST") +#endif /* LWIP_DNS && DNS_LOCAL_HOSTLIST && DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ + +#if LWIP_IPV6 && LWIP_ND6_QUEUEING +LWIP_MEMPOOL(ND6_QUEUE, MEMP_NUM_ND6_QUEUE, sizeof(struct nd6_q_entry), "ND6_QUEUE") +#endif /* LWIP_IPV6 && LWIP_ND6_QUEUEING */ + +#if LWIP_IPV6 && LWIP_IPV6_REASS +LWIP_MEMPOOL(IP6_REASSDATA, MEMP_NUM_REASSDATA, sizeof(struct ip6_reassdata), "IP6_REASSDATA") +#endif /* LWIP_IPV6 && LWIP_IPV6_REASS */ + +#if LWIP_IPV6 && LWIP_IPV6_MLD +LWIP_MEMPOOL(MLD6_GROUP, MEMP_NUM_MLD6_GROUP, sizeof(struct mld_group), "MLD6_GROUP") +#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */ + + +/* + * A list of pools of pbuf's used by LWIP. + * + * LWIP_PBUF_MEMPOOL(pool_name, number_elements, pbuf_payload_size, pool_description) + * creates a pool name MEMP_pool_name. description is used in stats.c + * This allocates enough space for the pbuf struct and a payload. + * (Example: pbuf_payload_size=0 allocates only size for the struct) + */ +LWIP_MEMPOOL(PBUF, MEMP_NUM_PBUF, sizeof(struct pbuf), "PBUF_REF/ROM") +LWIP_PBUF_MEMPOOL(PBUF_POOL, PBUF_POOL_SIZE, PBUF_POOL_BUFSIZE, "PBUF_POOL") + + +/* + * Allow for user-defined pools; this must be explicitly set in lwipopts.h + * since the default is to NOT look for lwippools.h + */ +#if MEMP_USE_CUSTOM_POOLS +#include "lwippools.h" +#endif /* MEMP_USE_CUSTOM_POOLS */ + +/* + * REQUIRED CLEANUP: Clear up so we don't get "multiply defined" error later + * (#undef is ignored for something that is not defined) + */ +#undef LWIP_MEMPOOL +#undef LWIP_MALLOC_MEMPOOL +#undef LWIP_MALLOC_MEMPOOL_START +#undef LWIP_MALLOC_MEMPOOL_END +#undef LWIP_PBUF_MEMPOOL diff --git a/Other/tun2socks/core/c/include/lwip/priv/nd6_priv.h b/Other/tun2socks/core/c/include/lwip/priv/nd6_priv.h new file mode 100644 index 0000000..cc3007d --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/nd6_priv.h @@ -0,0 +1,142 @@ +/** + * @file + * + * Neighbor discovery and stateless address autoconfiguration for IPv6. + * Aims to be compliant with RFC 4861 (Neighbor discovery) and RFC 4862 + * (Address autoconfiguration). + */ + +/* + * Copyright (c) 2010 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#ifndef LWIP_HDR_ND6_PRIV_H +#define LWIP_HDR_ND6_PRIV_H + +#include "lwip/opt.h" + +#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/pbuf.h" +#include "lwip/ip6_addr.h" +#include "lwip/netif.h" + + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_ND6_QUEUEING +/** struct for queueing outgoing packets for unknown address + * defined here to be accessed by memp.h + */ +struct nd6_q_entry { + struct nd6_q_entry *next; + struct pbuf *p; +}; +#endif /* LWIP_ND6_QUEUEING */ + +/** Struct for tables. */ +struct nd6_neighbor_cache_entry { + ip6_addr_t next_hop_address; + struct netif *netif; + u8_t lladdr[NETIF_MAX_HWADDR_LEN]; + /*u32_t pmtu;*/ +#if LWIP_ND6_QUEUEING + /** Pointer to queue of pending outgoing packets on this entry. */ + struct nd6_q_entry *q; +#else /* LWIP_ND6_QUEUEING */ + /** Pointer to a single pending outgoing packet on this entry. */ + struct pbuf *q; +#endif /* LWIP_ND6_QUEUEING */ + u8_t state; + u8_t isrouter; + union { + u32_t reachable_time; /* in seconds */ + u32_t delay_time; /* ticks (ND6_TMR_INTERVAL) */ + u32_t probes_sent; + u32_t stale_time; /* ticks (ND6_TMR_INTERVAL) */ + } counter; +}; + +struct nd6_destination_cache_entry { + ip6_addr_t destination_addr; + ip6_addr_t next_hop_addr; + u16_t pmtu; + u32_t age; +}; + +struct nd6_prefix_list_entry { + ip6_addr_t prefix; + struct netif *netif; + u32_t invalidation_timer; /* in seconds */ +}; + +struct nd6_router_list_entry { + struct nd6_neighbor_cache_entry *neighbor_entry; + u32_t invalidation_timer; /* in seconds */ + u8_t flags; +}; + +enum nd6_neighbor_cache_entry_state { + ND6_NO_ENTRY = 0, + ND6_INCOMPLETE, + ND6_REACHABLE, + ND6_STALE, + ND6_DELAY, + ND6_PROBE +}; + +#define ND6_HOPLIM 255 /* maximum hop limit, required in all ND packets */ + +#define ND6_2HRS 7200 /* two hours, expressed in number of seconds */ + +/* Router tables. */ +/* @todo make these static? and entries accessible through API? */ +extern struct nd6_neighbor_cache_entry neighbor_cache[]; +extern struct nd6_destination_cache_entry destination_cache[]; +extern struct nd6_prefix_list_entry prefix_list[]; +extern struct nd6_router_list_entry default_router_list[]; + +/* Default values, can be updated by a RA message. */ +extern u32_t reachable_time; +extern u32_t retrans_timer; + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6 */ + +#endif /* LWIP_HDR_ND6_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/priv/raw_priv.h b/Other/tun2socks/core/c/include/lwip/priv/raw_priv.h new file mode 100644 index 0000000..d4561d4 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/raw_priv.h @@ -0,0 +1,69 @@ +/** + * @file + * raw API internal implementations (do not use in application code) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_RAW_PRIV_H +#define LWIP_HDR_RAW_PRIV_H + +#include "lwip/opt.h" + +#if LWIP_RAW /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/raw.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** return codes for raw_input */ +typedef enum raw_input_state +{ + RAW_INPUT_NONE = 0, /* pbuf did not match any pcbs */ + RAW_INPUT_EATEN, /* pbuf handed off and delivered to pcb */ + RAW_INPUT_DELIVERED /* pbuf only delivered to pcb (pbuf can still be referenced) */ +} raw_input_state_t; + +/* The following functions are the lower layer interface to RAW. */ +raw_input_state_t raw_input(struct pbuf *p, struct netif *inp); + +void raw_netif_ip_addr_changed(const ip_addr_t* old_addr, const ip_addr_t* new_addr); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_RAW */ + +#endif /* LWIP_HDR_RAW_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/priv/sockets_priv.h b/Other/tun2socks/core/c/include/lwip/priv/sockets_priv.h new file mode 100644 index 0000000..d8f9904 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/sockets_priv.h @@ -0,0 +1,175 @@ +/** + * @file + * Sockets API internal implementations (do not use in application code) + */ + +/* + * Copyright (c) 2017 Joel Cunningham, Garmin International, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Joel Cunningham + * + */ +#ifndef LWIP_HDR_SOCKETS_PRIV_H +#define LWIP_HDR_SOCKETS_PRIV_H + +#include "lwip/opt.h" + +#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/err.h" +#include "lwip/sockets.h" +#include "lwip/sys.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define NUM_SOCKETS MEMP_NUM_NETCONN + +/** This is overridable for the rare case where more than 255 threads + * select on the same socket... + */ +#ifndef SELWAIT_T +#define SELWAIT_T u8_t +#endif + +union lwip_sock_lastdata { + struct netbuf *netbuf; + struct pbuf *pbuf; +}; + +/** Contains all internal pointers and states used for a socket */ +struct lwip_sock { + /** sockets currently are built on netconns, each socket has one netconn */ + struct netconn *conn; + /** data that was left from the previous read */ + union lwip_sock_lastdata lastdata; +#if LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL + /** number of times data was received, set by event_callback(), + tested by the receive and select functions */ + s16_t rcvevent; + /** number of times data was ACKed (free send buffer), set by event_callback(), + tested by select */ + u16_t sendevent; + /** error happened for this socket, set by event_callback(), tested by select */ + u16_t errevent; + /** counter of how many threads are waiting for this socket using select */ + SELWAIT_T select_waiting; +#endif /* LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL */ +#if LWIP_NETCONN_FULLDUPLEX + /* counter of how many threads are using a struct lwip_sock (not the 'int') */ + u8_t fd_used; + /* status of pending close/delete actions */ + u8_t fd_free_pending; +#define LWIP_SOCK_FD_FREE_TCP 1 +#define LWIP_SOCK_FD_FREE_FREE 2 +#endif +}; + +#ifndef set_errno +#define set_errno(err) do { if (err) { errno = (err); } } while(0) +#endif + +#if !LWIP_TCPIP_CORE_LOCKING +/** Maximum optlen used by setsockopt/getsockopt */ +#define LWIP_SETGETSOCKOPT_MAXOPTLEN LWIP_MAX(16, sizeof(struct ifreq)) + +/** This struct is used to pass data to the set/getsockopt_internal + * functions running in tcpip_thread context (only a void* is allowed) */ +struct lwip_setgetsockopt_data { + /** socket index for which to change options */ + int s; + /** level of the option to process */ + int level; + /** name of the option to process */ + int optname; + /** set: value to set the option to + * get: value of the option is stored here */ +#if LWIP_MPU_COMPATIBLE + u8_t optval[LWIP_SETGETSOCKOPT_MAXOPTLEN]; +#else + union { + void *p; + const void *pc; + } optval; +#endif + /** size of *optval */ + socklen_t optlen; + /** if an error occurs, it is temporarily stored here */ + int err; + /** semaphore to wake up the calling task */ + void* completed_sem; +}; +#endif /* !LWIP_TCPIP_CORE_LOCKING */ + +#ifdef __cplusplus +} +#endif + +struct lwip_sock* lwip_socket_dbg_get_socket(int fd); + +#if LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL + +#if LWIP_NETCONN_SEM_PER_THREAD +#define SELECT_SEM_T sys_sem_t* +#define SELECT_SEM_PTR(sem) (sem) +#else /* LWIP_NETCONN_SEM_PER_THREAD */ +#define SELECT_SEM_T sys_sem_t +#define SELECT_SEM_PTR(sem) (&(sem)) +#endif /* LWIP_NETCONN_SEM_PER_THREAD */ + +/** Description for a task waiting in select */ +struct lwip_select_cb { + /** Pointer to the next waiting task */ + struct lwip_select_cb *next; + /** Pointer to the previous waiting task */ + struct lwip_select_cb *prev; +#if LWIP_SOCKET_SELECT + /** readset passed to select */ + fd_set *readset; + /** writeset passed to select */ + fd_set *writeset; + /** unimplemented: exceptset passed to select */ + fd_set *exceptset; +#endif /* LWIP_SOCKET_SELECT */ +#if LWIP_SOCKET_POLL + /** fds passed to poll; NULL if select */ + struct pollfd *poll_fds; + /** nfds passed to poll; 0 if select */ + nfds_t poll_nfds; +#endif /* LWIP_SOCKET_POLL */ + /** don't signal the same semaphore twice: set to 1 when signalled */ + int sem_signalled; + /** semaphore to wake up a task waiting for select */ + SELECT_SEM_T sem; +}; +#endif /* LWIP_SOCKET_SELECT || LWIP_SOCKET_POLL */ + +#endif /* LWIP_SOCKET */ + +#endif /* LWIP_HDR_SOCKETS_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/priv/tcp_priv.h b/Other/tun2socks/core/c/include/lwip/priv/tcp_priv.h new file mode 100644 index 0000000..72f9126 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/tcp_priv.h @@ -0,0 +1,523 @@ +/** + * @file + * TCP internal implementations (do not use in application code) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_TCP_PRIV_H +#define LWIP_HDR_TCP_PRIV_H + +#include "lwip/opt.h" + +#if LWIP_TCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/tcp.h" +#include "lwip/mem.h" +#include "lwip/pbuf.h" +#include "lwip/ip.h" +#include "lwip/icmp.h" +#include "lwip/err.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" +#include "lwip/prot/tcp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Functions for interfacing with TCP: */ + +/* Lower layer interface to TCP: */ +void tcp_init (void); /* Initialize this module. */ +void tcp_tmr (void); /* Must be called every + TCP_TMR_INTERVAL + ms. (Typically 250 ms). */ +/* It is also possible to call these two functions at the right + intervals (instead of calling tcp_tmr()). */ +void tcp_slowtmr (void); +void tcp_fasttmr (void); + +/* Call this from a netif driver (watch out for threading issues!) that has + returned a memory error on transmit and now has free buffers to send more. + This iterates all active pcbs that had an error and tries to call + tcp_output, so use this with care as it might slow down the system. */ +void tcp_txnow (void); + +/* Only used by IP to pass a TCP segment to TCP: */ +void tcp_input (struct pbuf *p, struct netif *inp); +/* Used within the TCP code only: */ +struct tcp_pcb * tcp_alloc (u8_t prio); +void tcp_free (struct tcp_pcb *pcb); +void tcp_abandon (struct tcp_pcb *pcb, int reset); +err_t tcp_send_empty_ack(struct tcp_pcb *pcb); +err_t tcp_rexmit (struct tcp_pcb *pcb); +err_t tcp_rexmit_rto_prepare(struct tcp_pcb *pcb); +void tcp_rexmit_rto_commit(struct tcp_pcb *pcb); +void tcp_rexmit_rto (struct tcp_pcb *pcb); +void tcp_rexmit_fast (struct tcp_pcb *pcb); +u32_t tcp_update_rcv_ann_wnd(struct tcp_pcb *pcb); +err_t tcp_process_refused_data(struct tcp_pcb *pcb); + +/** + * This is the Nagle algorithm: try to combine user data to send as few TCP + * segments as possible. Only send if + * - no previously transmitted data on the connection remains unacknowledged or + * - the TF_NODELAY flag is set (nagle algorithm turned off for this pcb) or + * - the only unsent segment is at least pcb->mss bytes long (or there is more + * than one unsent segment - with lwIP, this can happen although unsent->len < mss) + * - or if we are in fast-retransmit (TF_INFR) + */ +#define tcp_do_output_nagle(tpcb) ((((tpcb)->unacked == NULL) || \ + ((tpcb)->flags & (TF_NODELAY | TF_INFR)) || \ + (((tpcb)->unsent != NULL) && (((tpcb)->unsent->next != NULL) || \ + ((tpcb)->unsent->len >= (tpcb)->mss))) || \ + ((tcp_sndbuf(tpcb) == 0) || (tcp_sndqueuelen(tpcb) >= TCP_SND_QUEUELEN)) \ + ) ? 1 : 0) +#define tcp_output_nagle(tpcb) (tcp_do_output_nagle(tpcb) ? tcp_output(tpcb) : ERR_OK) + + +#define TCP_SEQ_LT(a,b) ((s32_t)((u32_t)(a) - (u32_t)(b)) < 0) +#define TCP_SEQ_LEQ(a,b) ((s32_t)((u32_t)(a) - (u32_t)(b)) <= 0) +#define TCP_SEQ_GT(a,b) ((s32_t)((u32_t)(a) - (u32_t)(b)) > 0) +#define TCP_SEQ_GEQ(a,b) ((s32_t)((u32_t)(a) - (u32_t)(b)) >= 0) +/* is b<=a<=c? */ +#if 0 /* see bug #10548 */ +#define TCP_SEQ_BETWEEN(a,b,c) ((c)-(b) >= (a)-(b)) +#endif +#define TCP_SEQ_BETWEEN(a,b,c) (TCP_SEQ_GEQ(a,b) && TCP_SEQ_LEQ(a,c)) + +#ifndef TCP_TMR_INTERVAL +#define TCP_TMR_INTERVAL 250 /* The TCP timer interval in milliseconds. */ +#endif /* TCP_TMR_INTERVAL */ + +#ifndef TCP_FAST_INTERVAL +#define TCP_FAST_INTERVAL TCP_TMR_INTERVAL /* the fine grained timeout in milliseconds */ +#endif /* TCP_FAST_INTERVAL */ + +#ifndef TCP_SLOW_INTERVAL +#define TCP_SLOW_INTERVAL (2*TCP_TMR_INTERVAL) /* the coarse grained timeout in milliseconds */ +#endif /* TCP_SLOW_INTERVAL */ + +#define TCP_FIN_WAIT_TIMEOUT 20000 /* milliseconds */ +#define TCP_SYN_RCVD_TIMEOUT 20000 /* milliseconds */ + +#define TCP_OOSEQ_TIMEOUT 6U /* x RTO */ + +#ifndef TCP_MSL +#define TCP_MSL 60000UL /* The maximum segment lifetime in milliseconds */ +#endif + +/* Keepalive values, compliant with RFC 1122. Don't change this unless you know what you're doing */ +#ifndef TCP_KEEPIDLE_DEFAULT +#define TCP_KEEPIDLE_DEFAULT 7200000UL /* Default KEEPALIVE timer in milliseconds */ +#endif + +#ifndef TCP_KEEPINTVL_DEFAULT +#define TCP_KEEPINTVL_DEFAULT 75000UL /* Default Time between KEEPALIVE probes in milliseconds */ +#endif + +#ifndef TCP_KEEPCNT_DEFAULT +#define TCP_KEEPCNT_DEFAULT 9U /* Default Counter for KEEPALIVE probes */ +#endif + +#define TCP_MAXIDLE TCP_KEEPCNT_DEFAULT * TCP_KEEPINTVL_DEFAULT /* Maximum KEEPALIVE probe time */ + +#define TCP_TCPLEN(seg) ((seg)->len + (((TCPH_FLAGS((seg)->tcphdr) & (TCP_FIN | TCP_SYN)) != 0) ? 1U : 0U)) + +/** Flags used on input processing, not on pcb->flags +*/ +#define TF_RESET (u8_t)0x08U /* Connection was reset. */ +#define TF_CLOSED (u8_t)0x10U /* Connection was successfully closed. */ +#define TF_GOT_FIN (u8_t)0x20U /* Connection was closed by the remote end. */ + + +#if LWIP_EVENT_API + +#define TCP_EVENT_ACCEPT(lpcb,pcb,arg,err,ret) ret = lwip_tcp_event(arg, (pcb),\ + LWIP_EVENT_ACCEPT, NULL, 0, err) +#define TCP_EVENT_SENT(pcb,space,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ + LWIP_EVENT_SENT, NULL, space, ERR_OK) +#define TCP_EVENT_RECV(pcb,p,err,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ + LWIP_EVENT_RECV, (p), 0, (err)) +#define TCP_EVENT_CLOSED(pcb,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ + LWIP_EVENT_RECV, NULL, 0, ERR_OK) +#define TCP_EVENT_CONNECTED(pcb,err,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ + LWIP_EVENT_CONNECTED, NULL, 0, (err)) +#define TCP_EVENT_POLL(pcb,ret) do { if ((pcb)->state != SYN_RCVD) { \ + ret = lwip_tcp_event((pcb)->callback_arg, (pcb), LWIP_EVENT_POLL, NULL, 0, ERR_OK); \ + } else { \ + ret = ERR_ARG; } } while(0) +/* For event API, last state SYN_RCVD must be excluded here: the application + has not seen this pcb, yet! */ +#define TCP_EVENT_ERR(last_state,errf,arg,err) do { if (last_state != SYN_RCVD) { \ + lwip_tcp_event((arg), NULL, LWIP_EVENT_ERR, NULL, 0, (err)); } } while(0) + +#else /* LWIP_EVENT_API */ + +#define TCP_EVENT_ACCEPT(lpcb,pcb,arg,err,ret) \ + do { \ + if((lpcb)->accept != NULL) \ + (ret) = (lpcb)->accept((arg),(pcb),(err)); \ + else (ret) = ERR_ARG; \ + } while (0) + +#define TCP_EVENT_SENT(pcb,space,ret) \ + do { \ + if((pcb)->sent != NULL) \ + (ret) = (pcb)->sent((pcb)->callback_arg,(pcb),(space)); \ + else (ret) = ERR_OK; \ + } while (0) + +#define TCP_EVENT_RECV(pcb,p,err,ret) \ + do { \ + if((pcb)->recv != NULL) { \ + (ret) = (pcb)->recv((pcb)->callback_arg,(pcb),(p),(err));\ + } else { \ + (ret) = tcp_recv_null(NULL, (pcb), (p), (err)); \ + } \ + } while (0) + +#define TCP_EVENT_CLOSED(pcb,ret) \ + do { \ + if(((pcb)->recv != NULL)) { \ + (ret) = (pcb)->recv((pcb)->callback_arg,(pcb),NULL,ERR_OK);\ + } else { \ + (ret) = ERR_OK; \ + } \ + } while (0) + +#define TCP_EVENT_CONNECTED(pcb,err,ret) \ + do { \ + if((pcb)->connected != NULL) \ + (ret) = (pcb)->connected((pcb)->callback_arg,(pcb),(err)); \ + else (ret) = ERR_OK; \ + } while (0) + +#define TCP_EVENT_POLL(pcb,ret) \ + do { \ + if((pcb)->poll != NULL) \ + (ret) = (pcb)->poll((pcb)->callback_arg,(pcb)); \ + else (ret) = ERR_OK; \ + } while (0) + +#define TCP_EVENT_ERR(last_state,errf,arg,err) \ + do { \ + LWIP_UNUSED_ARG(last_state); \ + if((errf) != NULL) \ + (errf)((arg),(err)); \ + } while (0) + +#endif /* LWIP_EVENT_API */ + +/** Enabled extra-check for TCP_OVERSIZE if LWIP_DEBUG is enabled */ +#if TCP_OVERSIZE && defined(LWIP_DEBUG) +#define TCP_OVERSIZE_DBGCHECK 1 +#else +#define TCP_OVERSIZE_DBGCHECK 0 +#endif + +/** Don't generate checksum on copy if CHECKSUM_GEN_TCP is disabled */ +#define TCP_CHECKSUM_ON_COPY (LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_TCP) + +/* This structure represents a TCP segment on the unsent, unacked and ooseq queues */ +struct tcp_seg { + struct tcp_seg *next; /* used when putting segments on a queue */ + struct pbuf *p; /* buffer containing data + TCP header */ + u16_t len; /* the TCP length of this segment */ +#if TCP_OVERSIZE_DBGCHECK + u16_t oversize_left; /* Extra bytes available at the end of the last + pbuf in unsent (used for asserting vs. + tcp_pcb.unsent_oversize only) */ +#endif /* TCP_OVERSIZE_DBGCHECK */ +#if TCP_CHECKSUM_ON_COPY + u16_t chksum; + u8_t chksum_swapped; +#endif /* TCP_CHECKSUM_ON_COPY */ + u8_t flags; +#define TF_SEG_OPTS_MSS (u8_t)0x01U /* Include MSS option (only used in SYN segments) */ +#define TF_SEG_OPTS_TS (u8_t)0x02U /* Include timestamp option. */ +#define TF_SEG_DATA_CHECKSUMMED (u8_t)0x04U /* ALL data (not the header) is + checksummed into 'chksum' */ +#define TF_SEG_OPTS_WND_SCALE (u8_t)0x08U /* Include WND SCALE option (only used in SYN segments) */ +#define TF_SEG_OPTS_SACK_PERM (u8_t)0x10U /* Include SACK Permitted option (only used in SYN segments) */ + struct tcp_hdr *tcphdr; /* the TCP header */ +}; + +#define LWIP_TCP_OPT_EOL 0 +#define LWIP_TCP_OPT_NOP 1 +#define LWIP_TCP_OPT_MSS 2 +#define LWIP_TCP_OPT_WS 3 +#define LWIP_TCP_OPT_SACK_PERM 4 +#define LWIP_TCP_OPT_TS 8 + +#define LWIP_TCP_OPT_LEN_MSS 4 +#if LWIP_TCP_TIMESTAMPS +#define LWIP_TCP_OPT_LEN_TS 10 +#define LWIP_TCP_OPT_LEN_TS_OUT 12 /* aligned for output (includes NOP padding) */ +#else +#define LWIP_TCP_OPT_LEN_TS_OUT 0 +#endif +#if LWIP_WND_SCALE +#define LWIP_TCP_OPT_LEN_WS 3 +#define LWIP_TCP_OPT_LEN_WS_OUT 4 /* aligned for output (includes NOP padding) */ +#else +#define LWIP_TCP_OPT_LEN_WS_OUT 0 +#endif + +#if LWIP_TCP_SACK_OUT +#define LWIP_TCP_OPT_LEN_SACK_PERM 2 +#define LWIP_TCP_OPT_LEN_SACK_PERM_OUT 4 /* aligned for output (includes NOP padding) */ +#else +#define LWIP_TCP_OPT_LEN_SACK_PERM_OUT 0 +#endif + +#define LWIP_TCP_OPT_LENGTH(flags) \ + ((flags) & TF_SEG_OPTS_MSS ? LWIP_TCP_OPT_LEN_MSS : 0) + \ + ((flags) & TF_SEG_OPTS_TS ? LWIP_TCP_OPT_LEN_TS_OUT : 0) + \ + ((flags) & TF_SEG_OPTS_WND_SCALE ? LWIP_TCP_OPT_LEN_WS_OUT : 0) + \ + ((flags) & TF_SEG_OPTS_SACK_PERM ? LWIP_TCP_OPT_LEN_SACK_PERM_OUT : 0) + +/** This returns a TCP header option for MSS in an u32_t */ +#define TCP_BUILD_MSS_OPTION(mss) lwip_htonl(0x02040000 | ((mss) & 0xFFFF)) + +#if LWIP_WND_SCALE +#define TCPWNDSIZE_F U32_F +#define TCPWND_MAX 0xFFFFFFFFU +#define TCPWND_CHECK16(x) LWIP_ASSERT("window size > 0xFFFF", (x) <= 0xFFFF) +#define TCPWND_MIN16(x) ((u16_t)LWIP_MIN((x), 0xFFFF)) +#else /* LWIP_WND_SCALE */ +#define TCPWNDSIZE_F U16_F +#define TCPWND_MAX 0xFFFFU +#define TCPWND_CHECK16(x) +#define TCPWND_MIN16(x) x +#endif /* LWIP_WND_SCALE */ + +/* Global variables: */ +extern struct tcp_pcb *tcp_input_pcb; +extern u32_t tcp_ticks; +extern u8_t tcp_active_pcbs_changed; + +/* The TCP PCB lists. */ +union tcp_listen_pcbs_t { /* List of all TCP PCBs in LISTEN state. */ + struct tcp_pcb_listen *listen_pcbs; + struct tcp_pcb *pcbs; +}; +extern struct tcp_pcb *tcp_bound_pcbs; +extern union tcp_listen_pcbs_t tcp_listen_pcbs; +extern struct tcp_pcb *tcp_active_pcbs; /* List of all TCP PCBs that are in a + state in which they accept or send + data. */ +extern struct tcp_pcb *tcp_tw_pcbs; /* List of all TCP PCBs in TIME-WAIT. */ + +#define NUM_TCP_PCB_LISTS_NO_TIME_WAIT 3 +#define NUM_TCP_PCB_LISTS 4 +extern struct tcp_pcb ** const tcp_pcb_lists[NUM_TCP_PCB_LISTS]; + +/* Axioms about the above lists: + 1) Every TCP PCB that is not CLOSED is in one of the lists. + 2) A PCB is only in one of the lists. + 3) All PCBs in the tcp_listen_pcbs list is in LISTEN state. + 4) All PCBs in the tcp_tw_pcbs list is in TIME-WAIT state. +*/ +/* Define two macros, TCP_REG and TCP_RMV that registers a TCP PCB + with a PCB list or removes a PCB from a list, respectively. */ +#ifndef TCP_DEBUG_PCB_LISTS +#define TCP_DEBUG_PCB_LISTS 0 +#endif +#if TCP_DEBUG_PCB_LISTS +#define TCP_REG(pcbs, npcb) do {\ + struct tcp_pcb *tcp_tmp_pcb; \ + LWIP_DEBUGF(TCP_DEBUG, ("TCP_REG %p local port %"U16_F"\n", (void *)(npcb), (npcb)->local_port)); \ + for (tcp_tmp_pcb = *(pcbs); \ + tcp_tmp_pcb != NULL; \ + tcp_tmp_pcb = tcp_tmp_pcb->next) { \ + LWIP_ASSERT("TCP_REG: already registered\n", tcp_tmp_pcb != (npcb)); \ + } \ + LWIP_ASSERT("TCP_REG: pcb->state != CLOSED", ((pcbs) == &tcp_bound_pcbs) || ((npcb)->state != CLOSED)); \ + (npcb)->next = *(pcbs); \ + LWIP_ASSERT("TCP_REG: npcb->next != npcb", (npcb)->next != (npcb)); \ + *(pcbs) = (npcb); \ + LWIP_ASSERT("TCP_REG: tcp_pcbs sane", tcp_pcbs_sane()); \ + tcp_timer_needed(); \ + } while(0) +#define TCP_RMV(pcbs, npcb) do { \ + struct tcp_pcb *tcp_tmp_pcb; \ + LWIP_ASSERT("TCP_RMV: pcbs != NULL", *(pcbs) != NULL); \ + LWIP_DEBUGF(TCP_DEBUG, ("TCP_RMV: removing %p from %p\n", (void *)(npcb), (void *)(*(pcbs)))); \ + if(*(pcbs) == (npcb)) { \ + *(pcbs) = (*pcbs)->next; \ + } else for (tcp_tmp_pcb = *(pcbs); tcp_tmp_pcb != NULL; tcp_tmp_pcb = tcp_tmp_pcb->next) { \ + if(tcp_tmp_pcb->next == (npcb)) { \ + tcp_tmp_pcb->next = (npcb)->next; \ + break; \ + } \ + } \ + (npcb)->next = NULL; \ + LWIP_ASSERT("TCP_RMV: tcp_pcbs sane", tcp_pcbs_sane()); \ + LWIP_DEBUGF(TCP_DEBUG, ("TCP_RMV: removed %p from %p\n", (void *)(npcb), (void *)(*(pcbs)))); \ + } while(0) + +#else /* LWIP_DEBUG */ + +#define TCP_REG(pcbs, npcb) \ + do { \ + (npcb)->next = *pcbs; \ + *(pcbs) = (npcb); \ + tcp_timer_needed(); \ + } while (0) + +#define TCP_RMV(pcbs, npcb) \ + do { \ + if(*(pcbs) == (npcb)) { \ + (*(pcbs)) = (*pcbs)->next; \ + } \ + else { \ + struct tcp_pcb *tcp_tmp_pcb; \ + for (tcp_tmp_pcb = *pcbs; \ + tcp_tmp_pcb != NULL; \ + tcp_tmp_pcb = tcp_tmp_pcb->next) { \ + if(tcp_tmp_pcb->next == (npcb)) { \ + tcp_tmp_pcb->next = (npcb)->next; \ + break; \ + } \ + } \ + } \ + (npcb)->next = NULL; \ + } while(0) + +#endif /* LWIP_DEBUG */ + +#define TCP_REG_ACTIVE(npcb) \ + do { \ + TCP_REG(&tcp_active_pcbs, npcb); \ + tcp_active_pcbs_changed = 1; \ + } while (0) + +#define TCP_RMV_ACTIVE(npcb) \ + do { \ + TCP_RMV(&tcp_active_pcbs, npcb); \ + tcp_active_pcbs_changed = 1; \ + } while (0) + +#define TCP_PCB_REMOVE_ACTIVE(pcb) \ + do { \ + tcp_pcb_remove(&tcp_active_pcbs, pcb); \ + tcp_active_pcbs_changed = 1; \ + } while (0) + + +/* Internal functions: */ +struct tcp_pcb *tcp_pcb_copy(struct tcp_pcb *pcb); +void tcp_pcb_purge(struct tcp_pcb *pcb); +void tcp_pcb_remove(struct tcp_pcb **pcblist, struct tcp_pcb *pcb); + +void tcp_segs_free(struct tcp_seg *seg); +void tcp_seg_free(struct tcp_seg *seg); +struct tcp_seg *tcp_seg_copy(struct tcp_seg *seg); + +#define tcp_ack(pcb) \ + do { \ + if((pcb)->flags & TF_ACK_DELAY) { \ + tcp_clear_flags(pcb, TF_ACK_DELAY); \ + tcp_ack_now(pcb); \ + } \ + else { \ + tcp_set_flags(pcb, TF_ACK_DELAY); \ + } \ + } while (0) + +#define tcp_ack_now(pcb) \ + tcp_set_flags(pcb, TF_ACK_NOW) + +err_t tcp_send_fin(struct tcp_pcb *pcb); +err_t tcp_enqueue_flags(struct tcp_pcb *pcb, u8_t flags); + +void tcp_rexmit_seg(struct tcp_pcb *pcb, struct tcp_seg *seg); + +void tcp_rst(const struct tcp_pcb* pcb, u32_t seqno, u32_t ackno, + const ip_addr_t *local_ip, const ip_addr_t *remote_ip, + u16_t local_port, u16_t remote_port); + +u32_t tcp_next_iss(struct tcp_pcb *pcb); + +err_t tcp_keepalive(struct tcp_pcb *pcb); +err_t tcp_split_unsent_seg(struct tcp_pcb *pcb, u16_t split); +err_t tcp_zero_window_probe(struct tcp_pcb *pcb); +void tcp_trigger_input_pcb_close(void); + +#if TCP_CALCULATE_EFF_SEND_MSS +u16_t tcp_eff_send_mss_netif(u16_t sendmss, struct netif *outif, + const ip_addr_t *dest); +#define tcp_eff_send_mss(sendmss, src, dest) \ + tcp_eff_send_mss_netif(sendmss, ip_route(src, dest), dest) +#endif /* TCP_CALCULATE_EFF_SEND_MSS */ + +#if LWIP_CALLBACK_API +err_t tcp_recv_null(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err); +#endif /* LWIP_CALLBACK_API */ + +#if TCP_DEBUG || TCP_INPUT_DEBUG || TCP_OUTPUT_DEBUG +void tcp_debug_print(struct tcp_hdr *tcphdr); +void tcp_debug_print_flags(u8_t flags); +void tcp_debug_print_state(enum tcp_state s); +void tcp_debug_print_pcbs(void); +s16_t tcp_pcbs_sane(void); +#else +# define tcp_debug_print(tcphdr) +# define tcp_debug_print_flags(flags) +# define tcp_debug_print_state(s) +# define tcp_debug_print_pcbs() +# define tcp_pcbs_sane() 1 +#endif /* TCP_DEBUG */ + +/** External function (implemented in timers.c), called when TCP detects + * that a timer is needed (i.e. active- or time-wait-pcb found). */ +void tcp_timer_needed(void); + +void tcp_netif_ip_addr_changed(const ip_addr_t* old_addr, const ip_addr_t* new_addr); + +#if TCP_QUEUE_OOSEQ +void tcp_free_ooseq(struct tcp_pcb *pcb); +#endif + +#if LWIP_TCP_PCB_NUM_EXT_ARGS +err_t tcp_ext_arg_invoke_callbacks_passive_open(struct tcp_pcb_listen *lpcb, struct tcp_pcb *cpcb); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_TCP */ + +#endif /* LWIP_HDR_TCP_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/priv/tcpip_priv.h b/Other/tun2socks/core/c/include/lwip/priv/tcpip_priv.h new file mode 100644 index 0000000..74be634 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/priv/tcpip_priv.h @@ -0,0 +1,170 @@ +/** + * @file + * TCPIP API internal implementations (do not use in application code) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_TCPIP_PRIV_H +#define LWIP_HDR_TCPIP_PRIV_H + +#include "lwip/opt.h" + +#if !NO_SYS /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/tcpip.h" +#include "lwip/sys.h" +#include "lwip/timeouts.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct pbuf; +struct netif; + +#if LWIP_MPU_COMPATIBLE +#define API_VAR_REF(name) (*(name)) +#define API_VAR_DECLARE(type, name) type * name +#define API_VAR_ALLOC_EXT(type, pool, name, errorblock) do { \ + name = (type *)memp_malloc(pool); \ + if (name == NULL) { \ + errorblock; \ + } \ + } while(0) +#define API_VAR_ALLOC(type, pool, name, errorval) API_VAR_ALLOC_EXT(type, pool, name, return errorval) +#define API_VAR_ALLOC_POOL(type, pool, name, errorval) do { \ + name = (type *)LWIP_MEMPOOL_ALLOC(pool); \ + if (name == NULL) { \ + return errorval; \ + } \ + } while(0) +#define API_VAR_FREE(pool, name) memp_free(pool, name) +#define API_VAR_FREE_POOL(pool, name) LWIP_MEMPOOL_FREE(pool, name) +#define API_EXPR_REF(expr) (&(expr)) +#if LWIP_NETCONN_SEM_PER_THREAD +#define API_EXPR_REF_SEM(expr) (expr) +#else +#define API_EXPR_REF_SEM(expr) API_EXPR_REF(expr) +#endif +#define API_EXPR_DEREF(expr) expr +#define API_MSG_M_DEF(m) m +#define API_MSG_M_DEF_C(t, m) t m +#else /* LWIP_MPU_COMPATIBLE */ +#define API_VAR_REF(name) name +#define API_VAR_DECLARE(type, name) type name +#define API_VAR_ALLOC_EXT(type, pool, name, errorblock) +#define API_VAR_ALLOC(type, pool, name, errorval) +#define API_VAR_ALLOC_POOL(type, pool, name, errorval) +#define API_VAR_FREE(pool, name) +#define API_VAR_FREE_POOL(pool, name) +#define API_EXPR_REF(expr) expr +#define API_EXPR_REF_SEM(expr) API_EXPR_REF(expr) +#define API_EXPR_DEREF(expr) (*(expr)) +#define API_MSG_M_DEF(m) *m +#define API_MSG_M_DEF_C(t, m) const t * m +#endif /* LWIP_MPU_COMPATIBLE */ + +err_t tcpip_send_msg_wait_sem(tcpip_callback_fn fn, void *apimsg, sys_sem_t* sem); + +struct tcpip_api_call_data +{ +#if !LWIP_TCPIP_CORE_LOCKING + err_t err; +#if !LWIP_NETCONN_SEM_PER_THREAD + sys_sem_t sem; +#endif /* LWIP_NETCONN_SEM_PER_THREAD */ +#else /* !LWIP_TCPIP_CORE_LOCKING */ + u8_t dummy; /* avoid empty struct :-( */ +#endif /* !LWIP_TCPIP_CORE_LOCKING */ +}; +typedef err_t (*tcpip_api_call_fn)(struct tcpip_api_call_data* call); +err_t tcpip_api_call(tcpip_api_call_fn fn, struct tcpip_api_call_data *call); + +enum tcpip_msg_type { +#if !LWIP_TCPIP_CORE_LOCKING + TCPIP_MSG_API, + TCPIP_MSG_API_CALL, +#endif /* !LWIP_TCPIP_CORE_LOCKING */ +#if !LWIP_TCPIP_CORE_LOCKING_INPUT + TCPIP_MSG_INPKT, +#endif /* !LWIP_TCPIP_CORE_LOCKING_INPUT */ +#if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS + TCPIP_MSG_TIMEOUT, + TCPIP_MSG_UNTIMEOUT, +#endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */ + TCPIP_MSG_CALLBACK, + TCPIP_MSG_CALLBACK_STATIC +}; + +struct tcpip_msg { + enum tcpip_msg_type type; + union { +#if !LWIP_TCPIP_CORE_LOCKING + struct { + tcpip_callback_fn function; + void* msg; + } api_msg; + struct { + tcpip_api_call_fn function; + struct tcpip_api_call_data *arg; + sys_sem_t *sem; + } api_call; +#endif /* LWIP_TCPIP_CORE_LOCKING */ +#if !LWIP_TCPIP_CORE_LOCKING_INPUT + struct { + struct pbuf *p; + struct netif *netif; + netif_input_fn input_fn; + } inp; +#endif /* !LWIP_TCPIP_CORE_LOCKING_INPUT */ + struct { + tcpip_callback_fn function; + void *ctx; + } cb; +#if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS + struct { + u32_t msecs; + sys_timeout_handler h; + void *arg; + } tmo; +#endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */ + } msg; +}; + +#ifdef __cplusplus +} +#endif + +#endif /* !NO_SYS */ + +#endif /* LWIP_HDR_TCPIP_PRIV_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/autoip.h b/Other/tun2socks/core/c/include/lwip/prot/autoip.h new file mode 100644 index 0000000..fd3af8a --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/autoip.h @@ -0,0 +1,78 @@ +/** + * @file + * AutoIP protocol definitions + */ + +/* + * + * Copyright (c) 2007 Dominik Spies + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * Author: Dominik Spies + * + * This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform + * with RFC 3927. + * + */ + +#ifndef LWIP_HDR_PROT_AUTOIP_H +#define LWIP_HDR_PROT_AUTOIP_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* 169.254.0.0 */ +#define AUTOIP_NET 0xA9FE0000 +/* 169.254.1.0 */ +#define AUTOIP_RANGE_START (AUTOIP_NET | 0x0100) +/* 169.254.254.255 */ +#define AUTOIP_RANGE_END (AUTOIP_NET | 0xFEFF) + +/* RFC 3927 Constants */ +#define PROBE_WAIT 1 /* second (initial random delay) */ +#define PROBE_MIN 1 /* second (minimum delay till repeated probe) */ +#define PROBE_MAX 2 /* seconds (maximum delay till repeated probe) */ +#define PROBE_NUM 3 /* (number of probe packets) */ +#define ANNOUNCE_NUM 2 /* (number of announcement packets) */ +#define ANNOUNCE_INTERVAL 2 /* seconds (time between announcement packets) */ +#define ANNOUNCE_WAIT 2 /* seconds (delay before announcing) */ +#define MAX_CONFLICTS 10 /* (max conflicts before rate limiting) */ +#define RATE_LIMIT_INTERVAL 60 /* seconds (delay between successive attempts) */ +#define DEFEND_INTERVAL 10 /* seconds (min. wait between defensive ARPs) */ + +/* AutoIP client states */ +typedef enum { + AUTOIP_STATE_OFF = 0, + AUTOIP_STATE_PROBING = 1, + AUTOIP_STATE_ANNOUNCING = 2, + AUTOIP_STATE_BOUND = 3 +} autoip_state_enum_t; + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_AUTOIP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/dhcp.h b/Other/tun2socks/core/c/include/lwip/prot/dhcp.h new file mode 100644 index 0000000..ab18dca --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/dhcp.h @@ -0,0 +1,178 @@ +/** + * @file + * DHCP protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Leon Woestenberg + * Copyright (c) 2001-2004 Axon Digital Design B.V., The Netherlands. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Leon Woestenberg + * + */ +#ifndef LWIP_HDR_PROT_DHCP_H +#define LWIP_HDR_PROT_DHCP_H + +#include "lwip/opt.h" +#include "lwip/arch.h" +#include "lwip/prot/ip4.h" + +#ifdef __cplusplus +extern "C" { +#endif + + /* DHCP message item offsets and length */ +#define DHCP_CHADDR_LEN 16U +#define DHCP_SNAME_OFS 44U +#define DHCP_SNAME_LEN 64U +#define DHCP_FILE_OFS 108U +#define DHCP_FILE_LEN 128U +#define DHCP_MSG_LEN 236U +#define DHCP_OPTIONS_OFS (DHCP_MSG_LEN + 4U) /* 4 byte: cookie */ + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +/** minimum set of fields of any DHCP message */ +struct dhcp_msg +{ + PACK_STRUCT_FLD_8(u8_t op); + PACK_STRUCT_FLD_8(u8_t htype); + PACK_STRUCT_FLD_8(u8_t hlen); + PACK_STRUCT_FLD_8(u8_t hops); + PACK_STRUCT_FIELD(u32_t xid); + PACK_STRUCT_FIELD(u16_t secs); + PACK_STRUCT_FIELD(u16_t flags); + PACK_STRUCT_FLD_S(ip4_addr_p_t ciaddr); + PACK_STRUCT_FLD_S(ip4_addr_p_t yiaddr); + PACK_STRUCT_FLD_S(ip4_addr_p_t siaddr); + PACK_STRUCT_FLD_S(ip4_addr_p_t giaddr); + PACK_STRUCT_FLD_8(u8_t chaddr[DHCP_CHADDR_LEN]); + PACK_STRUCT_FLD_8(u8_t sname[DHCP_SNAME_LEN]); + PACK_STRUCT_FLD_8(u8_t file[DHCP_FILE_LEN]); + PACK_STRUCT_FIELD(u32_t cookie); +#define DHCP_MIN_OPTIONS_LEN 68U +/** make sure user does not configure this too small */ +#if ((defined(DHCP_OPTIONS_LEN)) && (DHCP_OPTIONS_LEN < DHCP_MIN_OPTIONS_LEN)) +# undef DHCP_OPTIONS_LEN +#endif +/** allow this to be configured in lwipopts.h, but not too small */ +#if (!defined(DHCP_OPTIONS_LEN)) +/** set this to be sufficient for your options in outgoing DHCP msgs */ +# define DHCP_OPTIONS_LEN DHCP_MIN_OPTIONS_LEN +#endif + PACK_STRUCT_FLD_8(u8_t options[DHCP_OPTIONS_LEN]); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + + +/* DHCP client states */ +typedef enum { + DHCP_STATE_OFF = 0, + DHCP_STATE_REQUESTING = 1, + DHCP_STATE_INIT = 2, + DHCP_STATE_REBOOTING = 3, + DHCP_STATE_REBINDING = 4, + DHCP_STATE_RENEWING = 5, + DHCP_STATE_SELECTING = 6, + DHCP_STATE_INFORMING = 7, + DHCP_STATE_CHECKING = 8, + DHCP_STATE_PERMANENT = 9, /* not yet implemented */ + DHCP_STATE_BOUND = 10, + DHCP_STATE_RELEASING = 11, /* not yet implemented */ + DHCP_STATE_BACKING_OFF = 12 +} dhcp_state_enum_t; + +/* DHCP op codes */ +#define DHCP_BOOTREQUEST 1 +#define DHCP_BOOTREPLY 2 + +/* DHCP message types */ +#define DHCP_DISCOVER 1 +#define DHCP_OFFER 2 +#define DHCP_REQUEST 3 +#define DHCP_DECLINE 4 +#define DHCP_ACK 5 +#define DHCP_NAK 6 +#define DHCP_RELEASE 7 +#define DHCP_INFORM 8 + +#define DHCP_MAGIC_COOKIE 0x63825363UL + +/* This is a list of options for BOOTP and DHCP, see RFC 2132 for descriptions */ + +/* BootP options */ +#define DHCP_OPTION_PAD 0 +#define DHCP_OPTION_SUBNET_MASK 1 /* RFC 2132 3.3 */ +#define DHCP_OPTION_ROUTER 3 +#define DHCP_OPTION_DNS_SERVER 6 +#define DHCP_OPTION_HOSTNAME 12 +#define DHCP_OPTION_IP_TTL 23 +#define DHCP_OPTION_MTU 26 +#define DHCP_OPTION_BROADCAST 28 +#define DHCP_OPTION_TCP_TTL 37 +#define DHCP_OPTION_NTP 42 +#define DHCP_OPTION_END 255 + +/* DHCP options */ +#define DHCP_OPTION_REQUESTED_IP 50 /* RFC 2132 9.1, requested IP address */ +#define DHCP_OPTION_LEASE_TIME 51 /* RFC 2132 9.2, time in seconds, in 4 bytes */ +#define DHCP_OPTION_OVERLOAD 52 /* RFC2132 9.3, use file and/or sname field for options */ + +#define DHCP_OPTION_MESSAGE_TYPE 53 /* RFC 2132 9.6, important for DHCP */ +#define DHCP_OPTION_MESSAGE_TYPE_LEN 1 + +#define DHCP_OPTION_SERVER_ID 54 /* RFC 2132 9.7, server IP address */ +#define DHCP_OPTION_PARAMETER_REQUEST_LIST 55 /* RFC 2132 9.8, requested option types */ + +#define DHCP_OPTION_MAX_MSG_SIZE 57 /* RFC 2132 9.10, message size accepted >= 576 */ +#define DHCP_OPTION_MAX_MSG_SIZE_LEN 2 + +#define DHCP_OPTION_T1 58 /* T1 renewal time */ +#define DHCP_OPTION_T2 59 /* T2 rebinding time */ +#define DHCP_OPTION_US 60 +#define DHCP_OPTION_CLIENT_ID 61 +#define DHCP_OPTION_TFTP_SERVERNAME 66 +#define DHCP_OPTION_BOOTFILE 67 + +/* possible combinations of overloading the file and sname fields with options */ +#define DHCP_OVERLOAD_NONE 0 +#define DHCP_OVERLOAD_FILE 1 +#define DHCP_OVERLOAD_SNAME 2 +#define DHCP_OVERLOAD_SNAME_FILE 3 + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_DHCP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/dhcp6.h b/Other/tun2socks/core/c/include/lwip/prot/dhcp6.h new file mode 100644 index 0000000..0754c91 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/dhcp6.h @@ -0,0 +1,138 @@ +/** + * @file + * DHCPv6 protocol definitions + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_PROT_DHCP6_H +#define LWIP_HDR_PROT_DHCP6_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define DHCP6_CLIENT_PORT 546 +#define DHCP6_SERVER_PORT 547 + + + /* DHCPv6 message item offsets and length */ +#define DHCP6_TRANSACTION_ID_LEN 3 + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +/** minimum set of fields of any DHCPv6 message */ +struct dhcp6_msg +{ + PACK_STRUCT_FLD_8(u8_t msgtype); + PACK_STRUCT_FLD_8(u8_t transaction_id[DHCP6_TRANSACTION_ID_LEN]); + /* options follow */ +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + + +/* DHCP6 client states */ +typedef enum { + DHCP6_STATE_OFF = 0, + DHCP6_STATE_STATELESS_IDLE = 1, + DHCP6_STATE_REQUESTING_CONFIG = 2 +} dhcp6_state_enum_t; + +/* DHCPv6 message types */ +#define DHCP6_SOLICIT 1 +#define DHCP6_ADVERTISE 2 +#define DHCP6_REQUEST 3 +#define DHCP6_CONFIRM 4 +#define DHCP6_RENEW 5 +#define DHCP6_REBIND 6 +#define DHCP6_REPLY 7 +#define DHCP6_RELEASE 8 +#define DHCP6_DECLINE 9 +#define DHCP6_RECONFIGURE 10 +#define DHCP6_INFOREQUEST 11 +#define DHCP6_RELAYFORW 12 +#define DHCP6_RELAYREPL 13 +/* More message types see https://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xhtml */ + +/** DHCPv6 status codes */ +#define DHCP6_STATUS_SUCCESS 0 /* Success. */ +#define DHCP6_STATUS_UNSPECFAIL 1 /* Failure, reason unspecified; this status code is sent by either a client or a server to indicate a failure not explicitly specified in this document. */ +#define DHCP6_STATUS_NOADDRSAVAIL 2 /* Server has no addresses available to assign to the IA(s). */ +#define DHCP6_STATUS_NOBINDING 3 /* Client record (binding) unavailable. */ +#define DHCP6_STATUS_NOTONLINK 4 /* The prefix for the address is not appropriate for the link to which the client is attached. */ +#define DHCP6_STATUS_USEMULTICAST 5 /* Sent by a server to a client to force the client to send messages to the server using the All_DHCP_Relay_Agents_and_Servers address. */ +/* More status codes see https://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xhtml */ + +/** DHCPv6 DUID types */ +#define DHCP6_DUID_LLT 1 /* LLT: Link-layer Address Plus Time */ +#define DHCP6_DUID_EN 2 /* EN: Enterprise number */ +#define DHCP6_DUID_LL 3 /* LL: Link-layer Address */ +#define DHCP6_DUID_UUID 4 /* UUID (RFC 6355) */ + +/* DHCPv6 options */ +#define DHCP6_OPTION_CLIENTID 1 +#define DHCP6_OPTION_SERVERID 2 +#define DHCP6_OPTION_IA_NA 3 +#define DHCP6_OPTION_IA_TA 4 +#define DHCP6_OPTION_IAADDR 5 +#define DHCP6_OPTION_ORO 6 +#define DHCP6_OPTION_PREFERENCE 7 +#define DHCP6_OPTION_ELAPSED_TIME 8 +#define DHCP6_OPTION_RELAY_MSG 9 +#define DHCP6_OPTION_AUTH 11 +#define DHCP6_OPTION_UNICAST 12 +#define DHCP6_OPTION_STATUS_CODE 13 +#define DHCP6_OPTION_RAPID_COMMIT 14 +#define DHCP6_OPTION_USER_CLASS 15 +#define DHCP6_OPTION_VENDOR_CLASS 16 +#define DHCP6_OPTION_VENDOR_OPTS 17 +#define DHCP6_OPTION_INTERFACE_ID 18 +#define DHCP6_OPTION_RECONF_MSG 19 +#define DHCP6_OPTION_RECONF_ACCEPT 20 +/* More options see https://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xhtml */ +#define DHCP6_OPTION_DNS_SERVERS 23 /* RFC 3646 */ +#define DHCP6_OPTION_DOMAIN_LIST 24 /* RFC 3646 */ +#define DHCP6_OPTION_SNTP_SERVERS 31 /* RFC 4075 */ + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_DHCP6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/dns.h b/Other/tun2socks/core/c/include/lwip/prot/dns.h new file mode 100644 index 0000000..94782d6 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/dns.h @@ -0,0 +1,140 @@ +/** + * @file + * DNS - host name to IP address resolver. + */ + +/* + * Port to lwIP from uIP + * by Jim Pettinato April 2007 + * + * security fixes and more by Simon Goldschmidt + * + * uIP version Copyright (c) 2002-2003, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef LWIP_HDR_PROT_DNS_H +#define LWIP_HDR_PROT_DNS_H + +#include "lwip/arch.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** DNS server port address */ +#ifndef DNS_SERVER_PORT +#define DNS_SERVER_PORT 53 +#endif + +/* DNS field TYPE used for "Resource Records" */ +#define DNS_RRTYPE_A 1 /* a host address */ +#define DNS_RRTYPE_NS 2 /* an authoritative name server */ +#define DNS_RRTYPE_MD 3 /* a mail destination (Obsolete - use MX) */ +#define DNS_RRTYPE_MF 4 /* a mail forwarder (Obsolete - use MX) */ +#define DNS_RRTYPE_CNAME 5 /* the canonical name for an alias */ +#define DNS_RRTYPE_SOA 6 /* marks the start of a zone of authority */ +#define DNS_RRTYPE_MB 7 /* a mailbox domain name (EXPERIMENTAL) */ +#define DNS_RRTYPE_MG 8 /* a mail group member (EXPERIMENTAL) */ +#define DNS_RRTYPE_MR 9 /* a mail rename domain name (EXPERIMENTAL) */ +#define DNS_RRTYPE_NULL 10 /* a null RR (EXPERIMENTAL) */ +#define DNS_RRTYPE_WKS 11 /* a well known service description */ +#define DNS_RRTYPE_PTR 12 /* a domain name pointer */ +#define DNS_RRTYPE_HINFO 13 /* host information */ +#define DNS_RRTYPE_MINFO 14 /* mailbox or mail list information */ +#define DNS_RRTYPE_MX 15 /* mail exchange */ +#define DNS_RRTYPE_TXT 16 /* text strings */ +#define DNS_RRTYPE_AAAA 28 /* IPv6 address */ +#define DNS_RRTYPE_SRV 33 /* service location */ +#define DNS_RRTYPE_ANY 255 /* any type */ + +/* DNS field CLASS used for "Resource Records" */ +#define DNS_RRCLASS_IN 1 /* the Internet */ +#define DNS_RRCLASS_CS 2 /* the CSNET class (Obsolete - used only for examples in some obsolete RFCs) */ +#define DNS_RRCLASS_CH 3 /* the CHAOS class */ +#define DNS_RRCLASS_HS 4 /* Hesiod [Dyer 87] */ +#define DNS_RRCLASS_ANY 255 /* any class */ +#define DNS_RRCLASS_FLUSH 0x800 /* Flush bit */ + +/* DNS protocol flags */ +#define DNS_FLAG1_RESPONSE 0x80 +#define DNS_FLAG1_OPCODE_STATUS 0x10 +#define DNS_FLAG1_OPCODE_INVERSE 0x08 +#define DNS_FLAG1_OPCODE_STANDARD 0x00 +#define DNS_FLAG1_AUTHORATIVE 0x04 +#define DNS_FLAG1_TRUNC 0x02 +#define DNS_FLAG1_RD 0x01 +#define DNS_FLAG2_RA 0x80 +#define DNS_FLAG2_ERR_MASK 0x0f +#define DNS_FLAG2_ERR_NONE 0x00 +#define DNS_FLAG2_ERR_NAME 0x03 + +#define DNS_HDR_GET_OPCODE(hdr) ((((hdr)->flags1) >> 3) & 0xF) + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +/** DNS message header */ +struct dns_hdr { + PACK_STRUCT_FIELD(u16_t id); + PACK_STRUCT_FLD_8(u8_t flags1); + PACK_STRUCT_FLD_8(u8_t flags2); + PACK_STRUCT_FIELD(u16_t numquestions); + PACK_STRUCT_FIELD(u16_t numanswers); + PACK_STRUCT_FIELD(u16_t numauthrr); + PACK_STRUCT_FIELD(u16_t numextrarr); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +#define SIZEOF_DNS_HDR 12 + + +/* Multicast DNS definitions */ + +/** UDP port for multicast DNS queries */ +#ifndef DNS_MQUERY_PORT +#define DNS_MQUERY_PORT 5353 +#endif + +/* IPv4 group for multicast DNS queries: 224.0.0.251 */ +#ifndef DNS_MQUERY_IPV4_GROUP_INIT +#define DNS_MQUERY_IPV4_GROUP_INIT IPADDR4_INIT_BYTES(224,0,0,251) +#endif + +/* IPv6 group for multicast DNS queries: FF02::FB */ +#ifndef DNS_MQUERY_IPV6_GROUP_INIT +#define DNS_MQUERY_IPV6_GROUP_INIT IPADDR6_INIT_HOST(0xFF020000,0,0,0xFB) +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_DNS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/etharp.h b/Other/tun2socks/core/c/include/lwip/prot/etharp.h new file mode 100644 index 0000000..811c228 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/etharp.h @@ -0,0 +1,114 @@ +/** + * @file + * ARP protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_ETHARP_H +#define LWIP_HDR_PROT_ETHARP_H + +#include "lwip/arch.h" +#include "lwip/prot/ethernet.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef ETHARP_HWADDR_LEN +#define ETHARP_HWADDR_LEN ETH_HWADDR_LEN +#endif + +/** + * struct ip4_addr_wordaligned is used in the definition of the ARP packet format in + * order to support compilers that don't have structure packing. + */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip4_addr_wordaligned { + PACK_STRUCT_FIELD(u16_t addrw[2]); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** MEMCPY-like copying of IP addresses where addresses are known to be + * 16-bit-aligned if the port is correctly configured (so a port could define + * this to copying 2 u16_t's) - no NULL-pointer-checking needed. */ +#ifndef IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T +#define IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T(dest, src) SMEMCPY(dest, src, sizeof(ip4_addr_t)) +#endif + + /** MEMCPY-like copying of IP addresses where addresses are known to be + * 16-bit-aligned if the port is correctly configured (so a port could define + * this to copying 2 u16_t's) - no NULL-pointer-checking needed. */ +#ifndef IPADDR_WORDALIGNED_COPY_FROM_IP4_ADDR_T +#define IPADDR_WORDALIGNED_COPY_FROM_IP4_ADDR_T(dest, src) SMEMCPY(dest, src, sizeof(ip4_addr_t)) +#endif + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +/** the ARP message, see RFC 826 ("Packet format") */ +struct etharp_hdr { + PACK_STRUCT_FIELD(u16_t hwtype); + PACK_STRUCT_FIELD(u16_t proto); + PACK_STRUCT_FLD_8(u8_t hwlen); + PACK_STRUCT_FLD_8(u8_t protolen); + PACK_STRUCT_FIELD(u16_t opcode); + PACK_STRUCT_FLD_S(struct eth_addr shwaddr); + PACK_STRUCT_FLD_S(struct ip4_addr_wordaligned sipaddr); + PACK_STRUCT_FLD_S(struct eth_addr dhwaddr); + PACK_STRUCT_FLD_S(struct ip4_addr_wordaligned dipaddr); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#define SIZEOF_ETHARP_HDR 28 + +/* ARP message types (opcodes) */ +enum etharp_opcode { + ARP_REQUEST = 1, + ARP_REPLY = 2 +}; + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_ETHARP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/ethernet.h b/Other/tun2socks/core/c/include/lwip/prot/ethernet.h new file mode 100644 index 0000000..309e574 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/ethernet.h @@ -0,0 +1,125 @@ +/** + * @file + * Ethernet protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_ETHERNET_H +#define LWIP_HDR_PROT_ETHERNET_H + +#include "lwip/arch.h" +#include "lwip/prot/ieee.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef ETH_HWADDR_LEN +#ifdef ETHARP_HWADDR_LEN +#define ETH_HWADDR_LEN ETHARP_HWADDR_LEN /* compatibility mode */ +#else +#define ETH_HWADDR_LEN 6 +#endif +#endif + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +/** An Ethernet MAC address */ +struct eth_addr { + PACK_STRUCT_FLD_8(u8_t addr[ETH_HWADDR_LEN]); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** Initialize a struct eth_addr with its 6 bytes (takes care of correct braces) */ +#define ETH_ADDR(b0, b1, b2, b3, b4, b5) {{b0, b1, b2, b3, b4, b5}} + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +/** Ethernet header */ +struct eth_hdr { +#if ETH_PAD_SIZE + PACK_STRUCT_FLD_8(u8_t padding[ETH_PAD_SIZE]); +#endif + PACK_STRUCT_FLD_S(struct eth_addr dest); + PACK_STRUCT_FLD_S(struct eth_addr src); + PACK_STRUCT_FIELD(u16_t type); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#define SIZEOF_ETH_HDR (14 + ETH_PAD_SIZE) + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +/** VLAN header inserted between ethernet header and payload + * if 'type' in ethernet header is ETHTYPE_VLAN. + * See IEEE802.Q */ +struct eth_vlan_hdr { + PACK_STRUCT_FIELD(u16_t prio_vid); + PACK_STRUCT_FIELD(u16_t tpid); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#define SIZEOF_VLAN_HDR 4 +#define VLAN_ID(vlan_hdr) (lwip_htons((vlan_hdr)->prio_vid) & 0xFFF) + +/** The 24-bit IANA IPv4-multicast OUI is 01-00-5e: */ +#define LL_IP4_MULTICAST_ADDR_0 0x01 +#define LL_IP4_MULTICAST_ADDR_1 0x00 +#define LL_IP4_MULTICAST_ADDR_2 0x5e + +/** IPv6 multicast uses this prefix */ +#define LL_IP6_MULTICAST_ADDR_0 0x33 +#define LL_IP6_MULTICAST_ADDR_1 0x33 + +#define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETH_HWADDR_LEN) == 0) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_ETHERNET_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/iana.h b/Other/tun2socks/core/c/include/lwip/prot/iana.h new file mode 100644 index 0000000..32890cc --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/iana.h @@ -0,0 +1,97 @@ +/** + * @file + * IANA assigned numbers (RFC 1700 and successors) + * + * @defgroup iana IANA assigned numbers + * @ingroup infrastructure + */ + +/* + * Copyright (c) 2017 Dirk Ziegelmeier. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Dirk Ziegelmeier + * + */ + +#ifndef LWIP_HDR_PROT_IANA_H +#define LWIP_HDR_PROT_IANA_H + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @ingroup iana + * Hardware types + */ +enum lwip_iana_hwtype { + /** Ethernet */ + LWIP_IANA_HWTYPE_ETHERNET = 1 +}; + +/** + * @ingroup iana + * Port numbers + * https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt + */ +enum lwip_iana_port_number { + /** SMTP */ + LWIP_IANA_PORT_SMTP = 25, + /** DHCP server */ + LWIP_IANA_PORT_DHCP_SERVER = 67, + /** DHCP client */ + LWIP_IANA_PORT_DHCP_CLIENT = 68, + /** TFTP */ + LWIP_IANA_PORT_TFTP = 69, + /** HTTP */ + LWIP_IANA_PORT_HTTP = 80, + /** SNTP */ + LWIP_IANA_PORT_SNTP = 123, + /** NETBIOS */ + LWIP_IANA_PORT_NETBIOS = 137, + /** SNMP */ + LWIP_IANA_PORT_SNMP = 161, + /** SNMP traps */ + LWIP_IANA_PORT_SNMP_TRAP = 162, + /** HTTPS */ + LWIP_IANA_PORT_HTTPS = 443, + /** SMTPS */ + LWIP_IANA_PORT_SMTPS = 465, + /** MQTT */ + LWIP_IANA_PORT_MQTT = 1883, + /** MDNS */ + LWIP_IANA_PORT_MDNS = 5353, + /** Secure MQTT */ + LWIP_IANA_PORT_SECURE_MQTT = 8883 +}; + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_IANA_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/icmp.h b/Other/tun2socks/core/c/include/lwip/prot/icmp.h new file mode 100644 index 0000000..7d19385 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/icmp.h @@ -0,0 +1,91 @@ +/** + * @file + * ICMP protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_ICMP_H +#define LWIP_HDR_PROT_ICMP_H + +#include "lwip/arch.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define ICMP_ER 0 /* echo reply */ +#define ICMP_DUR 3 /* destination unreachable */ +#define ICMP_SQ 4 /* source quench */ +#define ICMP_RD 5 /* redirect */ +#define ICMP_ECHO 8 /* echo */ +#define ICMP_TE 11 /* time exceeded */ +#define ICMP_PP 12 /* parameter problem */ +#define ICMP_TS 13 /* timestamp */ +#define ICMP_TSR 14 /* timestamp reply */ +#define ICMP_IRQ 15 /* information request */ +#define ICMP_IR 16 /* information reply */ +#define ICMP_AM 17 /* address mask request */ +#define ICMP_AMR 18 /* address mask reply */ + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +/** This is the standard ICMP header only that the u32_t data + * is split to two u16_t like ICMP echo needs it. + * This header is also used for other ICMP types that do not + * use the data part. + */ +PACK_STRUCT_BEGIN +struct icmp_echo_hdr { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FIELD(u16_t id); + PACK_STRUCT_FIELD(u16_t seqno); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/* Compatibility defines, old versions used to combine type and code to an u16_t */ +#define ICMPH_TYPE(hdr) ((hdr)->type) +#define ICMPH_CODE(hdr) ((hdr)->code) +#define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t)) +#define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c)) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_ICMP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/icmp6.h b/Other/tun2socks/core/c/include/lwip/prot/icmp6.h new file mode 100644 index 0000000..3461120 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/icmp6.h @@ -0,0 +1,170 @@ +/** + * @file + * ICMP6 protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_ICMP6_H +#define LWIP_HDR_PROT_ICMP6_H + +#include "lwip/arch.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** ICMP type */ +enum icmp6_type { + /** Destination unreachable */ + ICMP6_TYPE_DUR = 1, + /** Packet too big */ + ICMP6_TYPE_PTB = 2, + /** Time exceeded */ + ICMP6_TYPE_TE = 3, + /** Parameter problem */ + ICMP6_TYPE_PP = 4, + /** Private experimentation */ + ICMP6_TYPE_PE1 = 100, + /** Private experimentation */ + ICMP6_TYPE_PE2 = 101, + /** Reserved for expansion of error messages */ + ICMP6_TYPE_RSV_ERR = 127, + + /** Echo request */ + ICMP6_TYPE_EREQ = 128, + /** Echo reply */ + ICMP6_TYPE_EREP = 129, + /** Multicast listener query */ + ICMP6_TYPE_MLQ = 130, + /** Multicast listener report */ + ICMP6_TYPE_MLR = 131, + /** Multicast listener done */ + ICMP6_TYPE_MLD = 132, + /** Router solicitation */ + ICMP6_TYPE_RS = 133, + /** Router advertisement */ + ICMP6_TYPE_RA = 134, + /** Neighbor solicitation */ + ICMP6_TYPE_NS = 135, + /** Neighbor advertisement */ + ICMP6_TYPE_NA = 136, + /** Redirect */ + ICMP6_TYPE_RD = 137, + /** Multicast router advertisement */ + ICMP6_TYPE_MRA = 151, + /** Multicast router solicitation */ + ICMP6_TYPE_MRS = 152, + /** Multicast router termination */ + ICMP6_TYPE_MRT = 153, + /** Private experimentation */ + ICMP6_TYPE_PE3 = 200, + /** Private experimentation */ + ICMP6_TYPE_PE4 = 201, + /** Reserved for expansion of informational messages */ + ICMP6_TYPE_RSV_INF = 255 +}; + +/** ICMP destination unreachable codes */ +enum icmp6_dur_code { + /** No route to destination */ + ICMP6_DUR_NO_ROUTE = 0, + /** Communication with destination administratively prohibited */ + ICMP6_DUR_PROHIBITED = 1, + /** Beyond scope of source address */ + ICMP6_DUR_SCOPE = 2, + /** Address unreachable */ + ICMP6_DUR_ADDRESS = 3, + /** Port unreachable */ + ICMP6_DUR_PORT = 4, + /** Source address failed ingress/egress policy */ + ICMP6_DUR_POLICY = 5, + /** Reject route to destination */ + ICMP6_DUR_REJECT_ROUTE = 6 +}; + +/** ICMP time exceeded codes */ +enum icmp6_te_code { + /** Hop limit exceeded in transit */ + ICMP6_TE_HL = 0, + /** Fragment reassembly time exceeded */ + ICMP6_TE_FRAG = 1 +}; + +/** ICMP parameter code */ +enum icmp6_pp_code { + /** Erroneous header field encountered */ + ICMP6_PP_FIELD = 0, + /** Unrecognized next header type encountered */ + ICMP6_PP_HEADER = 1, + /** Unrecognized IPv6 option encountered */ + ICMP6_PP_OPTION = 2 +}; + +/** This is the standard ICMP6 header. */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct icmp6_hdr { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FIELD(u32_t data); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** This is the ICMP6 header adapted for echo req/resp. */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct icmp6_echo_hdr { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FIELD(u16_t id); + PACK_STRUCT_FIELD(u16_t seqno); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_ICMP6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/ieee.h b/Other/tun2socks/core/c/include/lwip/prot/ieee.h new file mode 100644 index 0000000..abbb9e3 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/ieee.h @@ -0,0 +1,91 @@ +/** + * @file + * IEEE assigned numbers + * + * @defgroup ieee IEEE assigned numbers + * @ingroup infrastructure + */ + +/* + * Copyright (c) 2017 Dirk Ziegelmeier. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Dirk Ziegelmeier + * + */ + +#ifndef LWIP_HDR_PROT_IEEE_H +#define LWIP_HDR_PROT_IEEE_H + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @ingroup ieee + * A list of often ethtypes (although lwIP does not use all of them). + */ +enum lwip_ieee_eth_type { + /** Internet protocol v4 */ + ETHTYPE_IP = 0x0800U, + /** Address resolution protocol */ + ETHTYPE_ARP = 0x0806U, + /** Wake on lan */ + ETHTYPE_WOL = 0x0842U, + /** RARP */ + ETHTYPE_RARP = 0x8035U, + /** Virtual local area network */ + ETHTYPE_VLAN = 0x8100U, + /** Internet protocol v6 */ + ETHTYPE_IPV6 = 0x86DDU, + /** PPP Over Ethernet Discovery Stage */ + ETHTYPE_PPPOEDISC = 0x8863U, + /** PPP Over Ethernet Session Stage */ + ETHTYPE_PPPOE = 0x8864U, + /** Jumbo Frames */ + ETHTYPE_JUMBO = 0x8870U, + /** Process field network */ + ETHTYPE_PROFINET = 0x8892U, + /** Ethernet for control automation technology */ + ETHTYPE_ETHERCAT = 0x88A4U, + /** Link layer discovery protocol */ + ETHTYPE_LLDP = 0x88CCU, + /** Serial real-time communication system */ + ETHTYPE_SERCOS = 0x88CDU, + /** Media redundancy protocol */ + ETHTYPE_MRP = 0x88E3U, + /** Precision time protocol */ + ETHTYPE_PTP = 0x88F7U, + /** Q-in-Q, 802.1ad */ + ETHTYPE_QINQ = 0x9100U +}; + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_IEEE_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/igmp.h b/Other/tun2socks/core/c/include/lwip/prot/igmp.h new file mode 100644 index 0000000..46b81a9 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/igmp.h @@ -0,0 +1,90 @@ +/** + * @file + * IGMP protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_IGMP_H +#define LWIP_HDR_PROT_IGMP_H + +#include "lwip/arch.h" +#include "lwip/prot/ip4.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * IGMP constants + */ +#define IGMP_TTL 1 +#define IGMP_MINLEN 8 +#define ROUTER_ALERT 0x9404U +#define ROUTER_ALERTLEN 4 + +/* + * IGMP message types, including version number. + */ +#define IGMP_MEMB_QUERY 0x11 /* Membership query */ +#define IGMP_V1_MEMB_REPORT 0x12 /* Ver. 1 membership report */ +#define IGMP_V2_MEMB_REPORT 0x16 /* Ver. 2 membership report */ +#define IGMP_LEAVE_GROUP 0x17 /* Leave-group message */ + +/* Group membership states */ +#define IGMP_GROUP_NON_MEMBER 0 +#define IGMP_GROUP_DELAYING_MEMBER 1 +#define IGMP_GROUP_IDLE_MEMBER 2 + +/** + * IGMP packet format. + */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct igmp_msg { + PACK_STRUCT_FLD_8(u8_t igmp_msgtype); + PACK_STRUCT_FLD_8(u8_t igmp_maxresp); + PACK_STRUCT_FIELD(u16_t igmp_checksum); + PACK_STRUCT_FLD_S(ip4_addr_p_t igmp_group_address); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_IGMP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/ip.h b/Other/tun2socks/core/c/include/lwip/prot/ip.h new file mode 100644 index 0000000..223158f --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/ip.h @@ -0,0 +1,59 @@ +/** + * @file + * IP protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_IP_H +#define LWIP_HDR_PROT_IP_H + +#include "lwip/arch.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define IP_PROTO_ICMP 1 +#define IP_PROTO_IGMP 2 +#define IP_PROTO_UDP 17 +#define IP_PROTO_UDPLITE 136 +#define IP_PROTO_TCP 6 + +/** This operates on a void* by loading the first byte */ +#define IP_HDR_GET_VERSION(ptr) ((*(u8_t*)(ptr)) >> 4) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_IP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/ip4.h b/Other/tun2socks/core/c/include/lwip/prot/ip4.h new file mode 100644 index 0000000..9347461 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/ip4.h @@ -0,0 +1,131 @@ +/** + * @file + * IPv4 protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_IP4_H +#define LWIP_HDR_PROT_IP4_H + +#include "lwip/arch.h" +#include "lwip/ip4_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** This is the packed version of ip4_addr_t, + used in network headers that are itself packed */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip4_addr_packed { + PACK_STRUCT_FIELD(u32_t addr); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +typedef struct ip4_addr_packed ip4_addr_p_t; + +/* Size of the IPv4 header. Same as 'sizeof(struct ip_hdr)'. */ +#define IP_HLEN 20 +/* Maximum size of the IPv4 header with options. */ +#define IP_HLEN_MAX 60 + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +/* The IPv4 header */ +struct ip_hdr { + /* version / header length */ + PACK_STRUCT_FLD_8(u8_t _v_hl); + /* type of service */ + PACK_STRUCT_FLD_8(u8_t _tos); + /* total length */ + PACK_STRUCT_FIELD(u16_t _len); + /* identification */ + PACK_STRUCT_FIELD(u16_t _id); + /* fragment offset field */ + PACK_STRUCT_FIELD(u16_t _offset); +#define IP_RF 0x8000U /* reserved fragment flag */ +#define IP_DF 0x4000U /* don't fragment flag */ +#define IP_MF 0x2000U /* more fragments flag */ +#define IP_OFFMASK 0x1fffU /* mask for fragmenting bits */ + /* time to live */ + PACK_STRUCT_FLD_8(u8_t _ttl); + /* protocol*/ + PACK_STRUCT_FLD_8(u8_t _proto); + /* checksum */ + PACK_STRUCT_FIELD(u16_t _chksum); + /* source and destination IP addresses */ + PACK_STRUCT_FLD_S(ip4_addr_p_t src); + PACK_STRUCT_FLD_S(ip4_addr_p_t dest); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/* Macros to get struct ip_hdr fields: */ +#define IPH_V(hdr) ((hdr)->_v_hl >> 4) +#define IPH_HL(hdr) ((hdr)->_v_hl & 0x0f) +#define IPH_HL_BYTES(hdr) ((u8_t)(IPH_HL(hdr) * 4)) +#define IPH_TOS(hdr) ((hdr)->_tos) +#define IPH_LEN(hdr) ((hdr)->_len) +#define IPH_ID(hdr) ((hdr)->_id) +#define IPH_OFFSET(hdr) ((hdr)->_offset) +#define IPH_OFFSET_BYTES(hdr) ((u16_t)((lwip_ntohs(IPH_OFFSET(hdr)) & IP_OFFMASK) * 8U)) +#define IPH_TTL(hdr) ((hdr)->_ttl) +#define IPH_PROTO(hdr) ((hdr)->_proto) +#define IPH_CHKSUM(hdr) ((hdr)->_chksum) + +/* Macros to set struct ip_hdr fields: */ +#define IPH_VHL_SET(hdr, v, hl) (hdr)->_v_hl = (u8_t)((((v) << 4) | (hl))) +#define IPH_TOS_SET(hdr, tos) (hdr)->_tos = (tos) +#define IPH_LEN_SET(hdr, len) (hdr)->_len = (len) +#define IPH_ID_SET(hdr, id) (hdr)->_id = (id) +#define IPH_OFFSET_SET(hdr, off) (hdr)->_offset = (off) +#define IPH_TTL_SET(hdr, ttl) (hdr)->_ttl = (u8_t)(ttl) +#define IPH_PROTO_SET(hdr, proto) (hdr)->_proto = (u8_t)(proto) +#define IPH_CHKSUM_SET(hdr, chksum) (hdr)->_chksum = (chksum) + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_IP4_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/ip6.h b/Other/tun2socks/core/c/include/lwip/prot/ip6.h new file mode 100644 index 0000000..0f6de45 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/ip6.h @@ -0,0 +1,233 @@ +/** + * @file + * IPv6 protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_IP6_H +#define LWIP_HDR_PROT_IP6_H + +#include "lwip/arch.h" +#include "lwip/ip6_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** This is the packed version of ip6_addr_t, + used in network headers that are itself packed */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip6_addr_packed { + PACK_STRUCT_FIELD(u32_t addr[4]); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +typedef struct ip6_addr_packed ip6_addr_p_t; + +#define IP6_HLEN 40 + +#define IP6_NEXTH_HOPBYHOP 0 +#define IP6_NEXTH_TCP 6 +#define IP6_NEXTH_UDP 17 +#define IP6_NEXTH_ENCAPS 41 +#define IP6_NEXTH_ROUTING 43 +#define IP6_NEXTH_FRAGMENT 44 +#define IP6_NEXTH_ICMP6 58 +#define IP6_NEXTH_NONE 59 +#define IP6_NEXTH_DESTOPTS 60 +#define IP6_NEXTH_UDPLITE 136 + +/** The IPv6 header. */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip6_hdr { + /** version / traffic class / flow label */ + PACK_STRUCT_FIELD(u32_t _v_tc_fl); + /** payload length */ + PACK_STRUCT_FIELD(u16_t _plen); + /** next header */ + PACK_STRUCT_FLD_8(u8_t _nexth); + /** hop limit */ + PACK_STRUCT_FLD_8(u8_t _hoplim); + /** source and destination IP addresses */ + PACK_STRUCT_FLD_S(ip6_addr_p_t src); + PACK_STRUCT_FLD_S(ip6_addr_p_t dest); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +#define IP6H_V(hdr) ((lwip_ntohl((hdr)->_v_tc_fl) >> 28) & 0x0f) +#define IP6H_TC(hdr) ((lwip_ntohl((hdr)->_v_tc_fl) >> 20) & 0xff) +#define IP6H_FL(hdr) (lwip_ntohl((hdr)->_v_tc_fl) & 0x000fffff) +#define IP6H_PLEN(hdr) (lwip_ntohs((hdr)->_plen)) +#define IP6H_NEXTH(hdr) ((hdr)->_nexth) +#define IP6H_NEXTH_P(hdr) ((u8_t *)(hdr) + 6) +#define IP6H_HOPLIM(hdr) ((hdr)->_hoplim) +#define IP6H_VTCFL_SET(hdr, v, tc, fl) (hdr)->_v_tc_fl = (lwip_htonl((((u32_t)(v)) << 28) | (((u32_t)(tc)) << 20) | (fl))) +#define IP6H_PLEN_SET(hdr, plen) (hdr)->_plen = lwip_htons(plen) +#define IP6H_NEXTH_SET(hdr, nexth) (hdr)->_nexth = (nexth) +#define IP6H_HOPLIM_SET(hdr, hl) (hdr)->_hoplim = (u8_t)(hl) + +/* ipv6 extended options header */ +#define IP6_PAD1_OPTION 0 +#define IP6_PADN_OPTION 1 +#define IP6_ROUTER_ALERT_OPTION 5 +#define IP6_JUMBO_OPTION 194 +#define IP6_HOME_ADDRESS_OPTION 201 +#define IP6_ROUTER_ALERT_DLEN 2 +#define IP6_ROUTER_ALERT_VALUE_MLD 0 + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip6_opt_hdr { + /* router alert option type */ + PACK_STRUCT_FLD_8(u8_t _opt_type); + /* router alert option data len */ + PACK_STRUCT_FLD_8(u8_t _opt_dlen); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +#define IP6_OPT_HLEN 2 +#define IP6_OPT_TYPE_ACTION(hdr) ((((hdr)->_opt_type) >> 6) & 0x3) +#define IP6_OPT_TYPE_CHANGE(hdr) ((((hdr)->_opt_type) >> 5) & 0x1) +#define IP6_OPT_TYPE(hdr) ((hdr)->_opt_type) +#define IP6_OPT_DLEN(hdr) ((hdr)->_opt_dlen) + +/* Hop-by-Hop header. */ +#define IP6_HBH_HLEN 2 + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip6_hbh_hdr { + /* next header */ + PACK_STRUCT_FLD_8(u8_t _nexth); + /* header length in 8-octet units */ + PACK_STRUCT_FLD_8(u8_t _hlen); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +#define IP6_HBH_NEXTH(hdr) ((hdr)->_nexth) + +/* Destination header. */ +#define IP6_DEST_HLEN 2 + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip6_dest_hdr { + /* next header */ + PACK_STRUCT_FLD_8(u8_t _nexth); + /* header length in 8-octet units */ + PACK_STRUCT_FLD_8(u8_t _hlen); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +#define IP6_DEST_NEXTH(hdr) ((hdr)->_nexth) + +/* Routing header */ +#define IP6_ROUT_TYPE2 2 +#define IP6_ROUT_RPL 3 + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip6_rout_hdr { + /* next header */ + PACK_STRUCT_FLD_8(u8_t _nexth); + /* reserved */ + PACK_STRUCT_FLD_8(u8_t _hlen); + /* fragment offset */ + PACK_STRUCT_FIELD(u8_t _routing_type); + /* fragmented packet identification */ + PACK_STRUCT_FIELD(u8_t _segments_left); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +#define IP6_ROUT_NEXTH(hdr) ((hdr)->_nexth) +#define IP6_ROUT_TYPE(hdr) ((hdr)->_routing_type) +#define IP6_ROUT_SEG_LEFT(hdr) ((hdr)->_segments_left) + +/* Fragment header. */ +#define IP6_FRAG_HLEN 8 +#define IP6_FRAG_OFFSET_MASK 0xfff8 +#define IP6_FRAG_MORE_FLAG 0x0001 + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ip6_frag_hdr { + /* next header */ + PACK_STRUCT_FLD_8(u8_t _nexth); + /* reserved */ + PACK_STRUCT_FLD_8(u8_t reserved); + /* fragment offset */ + PACK_STRUCT_FIELD(u16_t _fragment_offset); + /* fragmented packet identification */ + PACK_STRUCT_FIELD(u32_t _identification); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +#define IP6_FRAG_NEXTH(hdr) ((hdr)->_nexth) +#define IP6_FRAG_MBIT(hdr) (lwip_ntohs((hdr)->_fragment_offset) & 0x1) +#define IP6_FRAG_ID(hdr) (lwip_ntohl((hdr)->_identification)) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_IP6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/mld6.h b/Other/tun2socks/core/c/include/lwip/prot/mld6.h new file mode 100644 index 0000000..71f1dcb --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/mld6.h @@ -0,0 +1,71 @@ +/** + * @file + * MLD6 protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_MLD6_H +#define LWIP_HDR_PROT_MLD6_H + +#include "lwip/arch.h" +#include "lwip/prot/ip6.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define MLD6_HBH_HLEN 8 +/** Multicast listener report/query/done message header. */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct mld_header { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FIELD(u16_t max_resp_delay); + PACK_STRUCT_FIELD(u16_t reserved); + PACK_STRUCT_FLD_S(ip6_addr_p_t multicast_address); + /* Options follow. */ +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_MLD6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/nd6.h b/Other/tun2socks/core/c/include/lwip/prot/nd6.h new file mode 100644 index 0000000..c270d07 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/nd6.h @@ -0,0 +1,274 @@ +/** + * @file + * ND6 protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_ND6_H +#define LWIP_HDR_PROT_ND6_H + +#include "lwip/arch.h" +#include "lwip/ip6_addr.h" +#include "lwip/prot/ip6.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** Neighbor solicitation message header. */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ns_header { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FIELD(u32_t reserved); + PACK_STRUCT_FLD_S(ip6_addr_p_t target_address); + /* Options follow. */ +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** Neighbor advertisement message header. */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct na_header { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FLD_8(u8_t flags); + PACK_STRUCT_FLD_8(u8_t reserved[3]); + PACK_STRUCT_FLD_S(ip6_addr_p_t target_address); + /* Options follow. */ +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif +#define ND6_FLAG_ROUTER (0x80) +#define ND6_FLAG_SOLICITED (0x40) +#define ND6_FLAG_OVERRIDE (0x20) + +/** Router solicitation message header. */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct rs_header { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FIELD(u32_t reserved); + /* Options follow. */ +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** Router advertisement message header. */ +#define ND6_RA_FLAG_MANAGED_ADDR_CONFIG (0x80) +#define ND6_RA_FLAG_OTHER_CONFIG (0x40) +#define ND6_RA_FLAG_HOME_AGENT (0x20) +#define ND6_RA_PREFERENCE_MASK (0x18) +#define ND6_RA_PREFERENCE_HIGH (0x08) +#define ND6_RA_PREFERENCE_MEDIUM (0x00) +#define ND6_RA_PREFERENCE_LOW (0x18) +#define ND6_RA_PREFERENCE_DISABLED (0x10) +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct ra_header { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FLD_8(u8_t current_hop_limit); + PACK_STRUCT_FLD_8(u8_t flags); + PACK_STRUCT_FIELD(u16_t router_lifetime); + PACK_STRUCT_FIELD(u32_t reachable_time); + PACK_STRUCT_FIELD(u32_t retrans_timer); + /* Options follow. */ +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** Redirect message header. */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct redirect_header { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FIELD(u32_t reserved); + PACK_STRUCT_FLD_S(ip6_addr_p_t target_address); + PACK_STRUCT_FLD_S(ip6_addr_p_t destination_address); + /* Options follow. */ +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** Link-layer address option. */ +#define ND6_OPTION_TYPE_SOURCE_LLADDR (0x01) +#define ND6_OPTION_TYPE_TARGET_LLADDR (0x02) +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct lladdr_option { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t length); + PACK_STRUCT_FLD_8(u8_t addr[NETIF_MAX_HWADDR_LEN]); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** Prefix information option. */ +#define ND6_OPTION_TYPE_PREFIX_INFO (0x03) +#define ND6_PREFIX_FLAG_ON_LINK (0x80) +#define ND6_PREFIX_FLAG_AUTONOMOUS (0x40) +#define ND6_PREFIX_FLAG_ROUTER_ADDRESS (0x20) +#define ND6_PREFIX_FLAG_SITE_PREFIX (0x10) +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct prefix_option { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t length); + PACK_STRUCT_FLD_8(u8_t prefix_length); + PACK_STRUCT_FLD_8(u8_t flags); + PACK_STRUCT_FIELD(u32_t valid_lifetime); + PACK_STRUCT_FIELD(u32_t preferred_lifetime); + PACK_STRUCT_FLD_8(u8_t reserved2[3]); + PACK_STRUCT_FLD_8(u8_t site_prefix_length); + PACK_STRUCT_FLD_S(ip6_addr_p_t prefix); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** Redirected header option. */ +#define ND6_OPTION_TYPE_REDIR_HDR (0x04) +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct redirected_header_option { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t length); + PACK_STRUCT_FLD_8(u8_t reserved[6]); + /* Portion of redirected packet follows. */ + /* PACK_STRUCT_FLD_8(u8_t redirected[8]); */ +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** MTU option. */ +#define ND6_OPTION_TYPE_MTU (0x05) +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct mtu_option { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t length); + PACK_STRUCT_FIELD(u16_t reserved); + PACK_STRUCT_FIELD(u32_t mtu); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** Route information option. */ +#define ND6_OPTION_TYPE_ROUTE_INFO (24) +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct route_option { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t length); + PACK_STRUCT_FLD_8(u8_t prefix_length); + PACK_STRUCT_FLD_8(u8_t preference); + PACK_STRUCT_FIELD(u32_t route_lifetime); + PACK_STRUCT_FLD_S(ip6_addr_p_t prefix); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/** Recursive DNS Server Option. */ +#define ND6_OPTION_TYPE_RDNSS (25) +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct rdnss_option { + PACK_STRUCT_FLD_8(u8_t type); + PACK_STRUCT_FLD_8(u8_t length); + PACK_STRUCT_FIELD(u16_t reserved); + PACK_STRUCT_FIELD(u32_t lifetime); + PACK_STRUCT_FLD_S(ip6_addr_p_t rdnss_address[1]); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#define SIZEOF_RDNSS_OPTION_BASE 8 /* size without addresses */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_ND6_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/tcp.h b/Other/tun2socks/core/c/include/lwip/prot/tcp.h new file mode 100644 index 0000000..c1d7de1 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/tcp.h @@ -0,0 +1,100 @@ +/** + * @file + * TCP protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_TCP_H +#define LWIP_HDR_PROT_TCP_H + +#include "lwip/arch.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Length of the TCP header, excluding options. */ +#define TCP_HLEN 20 + +/* Fields are (of course) in network byte order. + * Some fields are converted to host byte order in tcp_input(). + */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct tcp_hdr { + PACK_STRUCT_FIELD(u16_t src); + PACK_STRUCT_FIELD(u16_t dest); + PACK_STRUCT_FIELD(u32_t seqno); + PACK_STRUCT_FIELD(u32_t ackno); + PACK_STRUCT_FIELD(u16_t _hdrlen_rsvd_flags); + PACK_STRUCT_FIELD(u16_t wnd); + PACK_STRUCT_FIELD(u16_t chksum); + PACK_STRUCT_FIELD(u16_t urgp); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/* TCP header flags bits */ +#define TCP_FIN 0x01U +#define TCP_SYN 0x02U +#define TCP_RST 0x04U +#define TCP_PSH 0x08U +#define TCP_ACK 0x10U +#define TCP_URG 0x20U +#define TCP_ECE 0x40U +#define TCP_CWR 0x80U +/* Valid TCP header flags */ +#define TCP_FLAGS 0x3fU + +#define TCP_MAX_OPTION_BYTES 40 + +#define TCPH_HDRLEN(phdr) ((u16_t)(lwip_ntohs((phdr)->_hdrlen_rsvd_flags) >> 12)) +#define TCPH_HDRLEN_BYTES(phdr) ((u8_t)(TCPH_HDRLEN(phdr) << 2)) +#define TCPH_FLAGS(phdr) ((u8_t)((lwip_ntohs((phdr)->_hdrlen_rsvd_flags) & TCP_FLAGS))) + +#define TCPH_HDRLEN_SET(phdr, len) (phdr)->_hdrlen_rsvd_flags = lwip_htons(((len) << 12) | TCPH_FLAGS(phdr)) +#define TCPH_FLAGS_SET(phdr, flags) (phdr)->_hdrlen_rsvd_flags = (((phdr)->_hdrlen_rsvd_flags & PP_HTONS(~TCP_FLAGS)) | lwip_htons(flags)) +#define TCPH_HDRLEN_FLAGS_SET(phdr, len, flags) (phdr)->_hdrlen_rsvd_flags = (u16_t)(lwip_htons((u16_t)((len) << 12) | (flags))) + +#define TCPH_SET_FLAG(phdr, flags ) (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags | lwip_htons(flags)) +#define TCPH_UNSET_FLAG(phdr, flags) (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags & ~lwip_htons(flags)) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_TCP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/prot/udp.h b/Other/tun2socks/core/c/include/lwip/prot/udp.h new file mode 100644 index 0000000..664f19a --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/prot/udp.h @@ -0,0 +1,68 @@ +/** + * @file + * UDP protocol definitions + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_PROT_UDP_H +#define LWIP_HDR_PROT_UDP_H + +#include "lwip/arch.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define UDP_HLEN 8 + +/* Fields are (of course) in network byte order. */ +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct udp_hdr { + PACK_STRUCT_FIELD(u16_t src); + PACK_STRUCT_FIELD(u16_t dest); /* src/dest UDP ports */ + PACK_STRUCT_FIELD(u16_t len); + PACK_STRUCT_FIELD(u16_t chksum); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_UDP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/raw.h b/Other/tun2socks/core/c/include/lwip/raw.h new file mode 100644 index 0000000..b129bd3 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/raw.h @@ -0,0 +1,143 @@ +/** + * @file + * raw API (to be used from TCPIP thread)\n + * See also @ref raw_raw + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_RAW_H +#define LWIP_HDR_RAW_H + +#include "lwip/opt.h" + +#if LWIP_RAW /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/pbuf.h" +#include "lwip/def.h" +#include "lwip/ip.h" +#include "lwip/ip_addr.h" +#include "lwip/ip6_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define RAW_FLAGS_CONNECTED 0x01U +#define RAW_FLAGS_HDRINCL 0x02U +#define RAW_FLAGS_MULTICAST_LOOP 0x04U + +struct raw_pcb; + +/** Function prototype for raw pcb receive callback functions. + * @param arg user supplied argument (raw_pcb.recv_arg) + * @param pcb the raw_pcb which received data + * @param p the packet buffer that was received + * @param addr the remote IP address from which the packet was received + * @return 1 if the packet was 'eaten' (aka. deleted), + * 0 if the packet lives on + * If returning 1, the callback is responsible for freeing the pbuf + * if it's not used any more. + */ +typedef u8_t (*raw_recv_fn)(void *arg, struct raw_pcb *pcb, struct pbuf *p, + const ip_addr_t *addr); + +/** the RAW protocol control block */ +struct raw_pcb { + /* Common members of all PCB types */ + IP_PCB; + + struct raw_pcb *next; + + u8_t protocol; + u8_t flags; + +#if LWIP_MULTICAST_TX_OPTIONS + /** outgoing network interface for multicast packets, by interface index (if nonzero) */ + u8_t mcast_ifindex; + /** TTL for outgoing multicast packets */ + u8_t mcast_ttl; +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + + /** receive callback function */ + raw_recv_fn recv; + /* user-supplied argument for the recv callback */ + void *recv_arg; +#if LWIP_IPV6 + /* fields for handling checksum computations as per RFC3542. */ + u16_t chksum_offset; + u8_t chksum_reqd; +#endif +}; + +/* The following functions is the application layer interface to the + RAW code. */ +struct raw_pcb * raw_new (u8_t proto); +struct raw_pcb * raw_new_ip_type(u8_t type, u8_t proto); +void raw_remove (struct raw_pcb *pcb); +err_t raw_bind (struct raw_pcb *pcb, const ip_addr_t *ipaddr); +void raw_bind_netif (struct raw_pcb *pcb, const struct netif *netif); +err_t raw_connect (struct raw_pcb *pcb, const ip_addr_t *ipaddr); +void raw_disconnect (struct raw_pcb *pcb); + +err_t raw_sendto (struct raw_pcb *pcb, struct pbuf *p, const ip_addr_t *ipaddr); +err_t raw_sendto_if_src(struct raw_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip, struct netif *netif, const ip_addr_t *src_ip); +err_t raw_send (struct raw_pcb *pcb, struct pbuf *p); + +void raw_recv (struct raw_pcb *pcb, raw_recv_fn recv, void *recv_arg); + +#define raw_flags(pcb) ((pcb)->flags) +#define raw_setflags(pcb,f) ((pcb)->flags = (f)) + +#define raw_set_flags(pcb, set_flags) do { (pcb)->flags = (u8_t)((pcb)->flags | (set_flags)); } while(0) +#define raw_clear_flags(pcb, clr_flags) do { (pcb)->flags = (u8_t)((pcb)->flags & (u8_t)(~(clr_flags) & 0xff)); } while(0) +#define raw_is_flag_set(pcb, flag) (((pcb)->flags & (flag)) != 0) + +#define raw_init() /* Compatibility define, no init needed. */ + +/* for compatibility with older implementation */ +#define raw_new_ip6(proto) raw_new_ip_type(IPADDR_TYPE_V6, proto) + +#if LWIP_MULTICAST_TX_OPTIONS +#define raw_set_multicast_netif_index(pcb, idx) ((pcb)->mcast_ifindex = (idx)) +#define raw_get_multicast_netif_index(pcb) ((pcb)->mcast_ifindex) +#define raw_set_multicast_ttl(pcb, value) ((pcb)->mcast_ttl = (value)) +#define raw_get_multicast_ttl(pcb) ((pcb)->mcast_ttl) +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_RAW */ + +#endif /* LWIP_HDR_RAW_H */ diff --git a/Other/tun2socks/core/c/include/lwip/sio.h b/Other/tun2socks/core/c/include/lwip/sio.h new file mode 100644 index 0000000..7643e19 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/sio.h @@ -0,0 +1,142 @@ +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + */ + +/* + * This is the interface to the platform specific serial IO module + * It needs to be implemented by those platforms which need SLIP or PPP + */ + +#ifndef SIO_H +#define SIO_H + +#include "lwip/arch.h" +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* If you want to define sio_fd_t elsewhere or differently, + define this in your cc.h file. */ +#ifndef __sio_fd_t_defined +typedef void * sio_fd_t; +#endif + +/* The following functions can be defined to something else in your cc.h file + or be implemented in your custom sio.c file. */ + +#ifndef sio_open +/** + * Opens a serial device for communication. + * + * @param devnum device number + * @return handle to serial device if successful, NULL otherwise + */ +sio_fd_t sio_open(u8_t devnum); +#endif + +#ifndef sio_send +/** + * Sends a single character to the serial device. + * + * @param c character to send + * @param fd serial device handle + * + * @note This function will block until the character can be sent. + */ +void sio_send(u8_t c, sio_fd_t fd); +#endif + +#ifndef sio_recv +/** + * Receives a single character from the serial device. + * + * @param fd serial device handle + * + * @note This function will block until a character is received. + */ +u8_t sio_recv(sio_fd_t fd); +#endif + +#ifndef sio_read +/** + * Reads from the serial device. + * + * @param fd serial device handle + * @param data pointer to data buffer for receiving + * @param len maximum length (in bytes) of data to receive + * @return number of bytes actually received - may be 0 if aborted by sio_read_abort + * + * @note This function will block until data can be received. The blocking + * can be cancelled by calling sio_read_abort(). + */ +u32_t sio_read(sio_fd_t fd, u8_t *data, u32_t len); +#endif + +#ifndef sio_tryread +/** + * Tries to read from the serial device. Same as sio_read but returns + * immediately if no data is available and never blocks. + * + * @param fd serial device handle + * @param data pointer to data buffer for receiving + * @param len maximum length (in bytes) of data to receive + * @return number of bytes actually received + */ +u32_t sio_tryread(sio_fd_t fd, u8_t *data, u32_t len); +#endif + +#ifndef sio_write +/** + * Writes to the serial device. + * + * @param fd serial device handle + * @param data pointer to data to send + * @param len length (in bytes) of data to send + * @return number of bytes actually sent + * + * @note This function will block until all data can be sent. + */ +u32_t sio_write(sio_fd_t fd, u8_t *data, u32_t len); +#endif + +#ifndef sio_read_abort +/** + * Aborts a blocking sio_read() call. + * + * @param fd serial device handle + */ +void sio_read_abort(sio_fd_t fd); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* SIO_H */ diff --git a/Other/tun2socks/core/c/include/lwip/snmp.h b/Other/tun2socks/core/c/include/lwip/snmp.h new file mode 100644 index 0000000..8704d0b --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/snmp.h @@ -0,0 +1,213 @@ +/** + * @file + * SNMP support API for implementing netifs and statitics for MIB2 + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Dirk Ziegelmeier + * + */ +#ifndef LWIP_HDR_SNMP_H +#define LWIP_HDR_SNMP_H + +#include "lwip/opt.h" +#include "lwip/ip_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct udp_pcb; +struct netif; + +/** + * @defgroup netif_mib2 MIB2 statistics + * @ingroup netif + */ + +/* MIB2 statistics functions */ +#if MIB2_STATS /* don't build if not configured for use in lwipopts.h */ +/** + * @ingroup netif_mib2 + * @see RFC1213, "MIB-II, 6. Definitions" + */ +enum snmp_ifType { + snmp_ifType_other=1, /* none of the following */ + snmp_ifType_regular1822, + snmp_ifType_hdh1822, + snmp_ifType_ddn_x25, + snmp_ifType_rfc877_x25, + snmp_ifType_ethernet_csmacd, + snmp_ifType_iso88023_csmacd, + snmp_ifType_iso88024_tokenBus, + snmp_ifType_iso88025_tokenRing, + snmp_ifType_iso88026_man, + snmp_ifType_starLan, + snmp_ifType_proteon_10Mbit, + snmp_ifType_proteon_80Mbit, + snmp_ifType_hyperchannel, + snmp_ifType_fddi, + snmp_ifType_lapb, + snmp_ifType_sdlc, + snmp_ifType_ds1, /* T-1 */ + snmp_ifType_e1, /* european equiv. of T-1 */ + snmp_ifType_basicISDN, + snmp_ifType_primaryISDN, /* proprietary serial */ + snmp_ifType_propPointToPointSerial, + snmp_ifType_ppp, + snmp_ifType_softwareLoopback, + snmp_ifType_eon, /* CLNP over IP [11] */ + snmp_ifType_ethernet_3Mbit, + snmp_ifType_nsip, /* XNS over IP */ + snmp_ifType_slip, /* generic SLIP */ + snmp_ifType_ultra, /* ULTRA technologies */ + snmp_ifType_ds3, /* T-3 */ + snmp_ifType_sip, /* SMDS */ + snmp_ifType_frame_relay +}; + +/** This macro has a precision of ~49 days because sys_now returns u32_t. \#define your own if you want ~490 days. */ +#ifndef MIB2_COPY_SYSUPTIME_TO +#define MIB2_COPY_SYSUPTIME_TO(ptrToVal) (*(ptrToVal) = (sys_now() / 10)) +#endif + +/** + * @ingroup netif_mib2 + * Increment stats member for SNMP MIB2 stats (struct stats_mib2_netif_ctrs) + */ +#define MIB2_STATS_NETIF_INC(n, x) do { ++(n)->mib2_counters.x; } while(0) +/** + * @ingroup netif_mib2 + * Add value to stats member for SNMP MIB2 stats (struct stats_mib2_netif_ctrs) + */ +#define MIB2_STATS_NETIF_ADD(n, x, val) do { (n)->mib2_counters.x += (val); } while(0) + +/** + * @ingroup netif_mib2 + * Init MIB2 statistic counters in netif + * @param netif Netif to init + * @param type one of enum @ref snmp_ifType + * @param speed your link speed here (units: bits per second) + */ +#define MIB2_INIT_NETIF(netif, type, speed) do { \ + (netif)->link_type = (type); \ + (netif)->link_speed = (speed);\ + (netif)->ts = 0; \ + (netif)->mib2_counters.ifinoctets = 0; \ + (netif)->mib2_counters.ifinucastpkts = 0; \ + (netif)->mib2_counters.ifinnucastpkts = 0; \ + (netif)->mib2_counters.ifindiscards = 0; \ + (netif)->mib2_counters.ifinerrors = 0; \ + (netif)->mib2_counters.ifinunknownprotos = 0; \ + (netif)->mib2_counters.ifoutoctets = 0; \ + (netif)->mib2_counters.ifoutucastpkts = 0; \ + (netif)->mib2_counters.ifoutnucastpkts = 0; \ + (netif)->mib2_counters.ifoutdiscards = 0; \ + (netif)->mib2_counters.ifouterrors = 0; } while(0) +#else /* MIB2_STATS */ +#ifndef MIB2_COPY_SYSUPTIME_TO +#define MIB2_COPY_SYSUPTIME_TO(ptrToVal) +#endif +#define MIB2_INIT_NETIF(netif, type, speed) +#define MIB2_STATS_NETIF_INC(n, x) +#define MIB2_STATS_NETIF_ADD(n, x, val) +#endif /* MIB2_STATS */ + +/* LWIP MIB2 callbacks */ +#if LWIP_MIB2_CALLBACKS /* don't build if not configured for use in lwipopts.h */ +/* network interface */ +void mib2_netif_added(struct netif *ni); +void mib2_netif_removed(struct netif *ni); + +#if LWIP_IPV4 && LWIP_ARP +/* ARP (for atTable and ipNetToMediaTable) */ +void mib2_add_arp_entry(struct netif *ni, ip4_addr_t *ip); +void mib2_remove_arp_entry(struct netif *ni, ip4_addr_t *ip); +#else /* LWIP_IPV4 && LWIP_ARP */ +#define mib2_add_arp_entry(ni,ip) +#define mib2_remove_arp_entry(ni,ip) +#endif /* LWIP_IPV4 && LWIP_ARP */ + +/* IP */ +#if LWIP_IPV4 +void mib2_add_ip4(struct netif *ni); +void mib2_remove_ip4(struct netif *ni); +void mib2_add_route_ip4(u8_t dflt, struct netif *ni); +void mib2_remove_route_ip4(u8_t dflt, struct netif *ni); +#endif /* LWIP_IPV4 */ + +/* UDP */ +#if LWIP_UDP +void mib2_udp_bind(struct udp_pcb *pcb); +void mib2_udp_unbind(struct udp_pcb *pcb); +#endif /* LWIP_UDP */ + +#else /* LWIP_MIB2_CALLBACKS */ +/* LWIP_MIB2_CALLBACKS support not available */ +/* define everything to be empty */ + +/* network interface */ +#define mib2_netif_added(ni) +#define mib2_netif_removed(ni) + +/* ARP */ +#define mib2_add_arp_entry(ni,ip) +#define mib2_remove_arp_entry(ni,ip) + +/* IP */ +#define mib2_add_ip4(ni) +#define mib2_remove_ip4(ni) +#define mib2_add_route_ip4(dflt, ni) +#define mib2_remove_route_ip4(dflt, ni) + +/* UDP */ +#define mib2_udp_bind(pcb) +#define mib2_udp_unbind(pcb) +#endif /* LWIP_MIB2_CALLBACKS */ + +/* for source-code compatibility reasons only, can be removed (not used internally) */ +#define NETIF_INIT_SNMP MIB2_INIT_NETIF +#define snmp_add_ifinoctets(ni,value) MIB2_STATS_NETIF_ADD(ni, ifinoctets, value) +#define snmp_inc_ifinucastpkts(ni) MIB2_STATS_NETIF_INC(ni, ifinucastpkts) +#define snmp_inc_ifinnucastpkts(ni) MIB2_STATS_NETIF_INC(ni, ifinnucastpkts) +#define snmp_inc_ifindiscards(ni) MIB2_STATS_NETIF_INC(ni, ifindiscards) +#define snmp_inc_ifinerrors(ni) MIB2_STATS_NETIF_INC(ni, ifinerrors) +#define snmp_inc_ifinunknownprotos(ni) MIB2_STATS_NETIF_INC(ni, ifinunknownprotos) +#define snmp_add_ifoutoctets(ni,value) MIB2_STATS_NETIF_ADD(ni, ifoutoctets, value) +#define snmp_inc_ifoutucastpkts(ni) MIB2_STATS_NETIF_INC(ni, ifoutucastpkts) +#define snmp_inc_ifoutnucastpkts(ni) MIB2_STATS_NETIF_INC(ni, ifoutnucastpkts) +#define snmp_inc_ifoutdiscards(ni) MIB2_STATS_NETIF_INC(ni, ifoutdiscards) +#define snmp_inc_ifouterrors(ni) MIB2_STATS_NETIF_INC(ni, ifouterrors) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_SNMP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/sockets.h b/Other/tun2socks/core/c/include/lwip/sockets.h new file mode 100644 index 0000000..d70d36c --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/sockets.h @@ -0,0 +1,688 @@ +/** + * @file + * Socket API (to be used from non-TCPIP threads) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + + +#ifndef LWIP_HDR_SOCKETS_H +#define LWIP_HDR_SOCKETS_H + +#include "lwip/opt.h" + +#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/ip_addr.h" +#include "lwip/netif.h" +#include "lwip/err.h" +#include "lwip/inet.h" +#include "lwip/errno.h" + +#include + +#ifdef __cplusplus +extern "C" { +#endif + +/* If your port already typedef's sa_family_t, define SA_FAMILY_T_DEFINED + to prevent this code from redefining it. */ +#if !defined(sa_family_t) && !defined(SA_FAMILY_T_DEFINED) +typedef u8_t sa_family_t; +#endif +/* If your port already typedef's in_port_t, define IN_PORT_T_DEFINED + to prevent this code from redefining it. */ +#if !defined(in_port_t) && !defined(IN_PORT_T_DEFINED) +typedef u16_t in_port_t; +#endif + +#if LWIP_IPV4 +/* members are in network byte order */ +struct sockaddr_in { + u8_t sin_len; + sa_family_t sin_family; + in_port_t sin_port; + struct in_addr sin_addr; +#define SIN_ZERO_LEN 8 + char sin_zero[SIN_ZERO_LEN]; +}; +#endif /* LWIP_IPV4 */ + +#if LWIP_IPV6 +struct sockaddr_in6 { + u8_t sin6_len; /* length of this structure */ + sa_family_t sin6_family; /* AF_INET6 */ + in_port_t sin6_port; /* Transport layer port # */ + u32_t sin6_flowinfo; /* IPv6 flow information */ + struct in6_addr sin6_addr; /* IPv6 address */ + u32_t sin6_scope_id; /* Set of interfaces for scope */ +}; +#endif /* LWIP_IPV6 */ + +struct sockaddr { + u8_t sa_len; + sa_family_t sa_family; + char sa_data[14]; +}; + +struct sockaddr_storage { + u8_t s2_len; + sa_family_t ss_family; + char s2_data1[2]; + u32_t s2_data2[3]; +#if LWIP_IPV6 + u32_t s2_data3[3]; +#endif /* LWIP_IPV6 */ +}; + +/* If your port already typedef's socklen_t, define SOCKLEN_T_DEFINED + to prevent this code from redefining it. */ +#if !defined(socklen_t) && !defined(SOCKLEN_T_DEFINED) +typedef u32_t socklen_t; +#endif + +#if !defined IOV_MAX +#define IOV_MAX 0xFFFF +#elif IOV_MAX > 0xFFFF +#error "IOV_MAX larger than supported by LwIP" +#endif /* IOV_MAX */ + +#if !defined(iovec) +struct iovec { + void *iov_base; + size_t iov_len; +}; +#endif + +struct msghdr { + void *msg_name; + socklen_t msg_namelen; + struct iovec *msg_iov; + int msg_iovlen; + void *msg_control; + socklen_t msg_controllen; + int msg_flags; +}; + +/* struct msghdr->msg_flags bit field values */ +#define MSG_TRUNC 0x04 +#define MSG_CTRUNC 0x08 + +/* RFC 3542, Section 20: Ancillary Data */ +struct cmsghdr { + socklen_t cmsg_len; /* number of bytes, including header */ + int cmsg_level; /* originating protocol */ + int cmsg_type; /* protocol-specific type */ +}; +/* Data section follows header and possible padding, typically referred to as + unsigned char cmsg_data[]; */ + +/* cmsg header/data alignment. NOTE: we align to native word size (double word +size on 16-bit arch) so structures are not placed at an unaligned address. +16-bit arch needs double word to ensure 32-bit alignment because socklen_t +could be 32 bits. If we ever have cmsg data with a 64-bit variable, alignment +will need to increase long long */ +#define ALIGN_H(size) (((size) + sizeof(long) - 1U) & ~(sizeof(long)-1U)) +#define ALIGN_D(size) ALIGN_H(size) + +#define CMSG_FIRSTHDR(mhdr) \ + ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ + (struct cmsghdr *)(mhdr)->msg_control : \ + (struct cmsghdr *)NULL) + +#define CMSG_NXTHDR(mhdr, cmsg) \ + (((cmsg) == NULL) ? CMSG_FIRSTHDR(mhdr) : \ + (((u8_t *)(cmsg) + ALIGN_H((cmsg)->cmsg_len) \ + + ALIGN_D(sizeof(struct cmsghdr)) > \ + (u8_t *)((mhdr)->msg_control) + (mhdr)->msg_controllen) ? \ + (struct cmsghdr *)NULL : \ + (struct cmsghdr *)((void*)((u8_t *)(cmsg) + \ + ALIGN_H((cmsg)->cmsg_len))))) + +#define CMSG_DATA(cmsg) ((void*)((u8_t *)(cmsg) + \ + ALIGN_D(sizeof(struct cmsghdr)))) + +#define CMSG_SPACE(length) (ALIGN_D(sizeof(struct cmsghdr)) + \ + ALIGN_H(length)) + +#define CMSG_LEN(length) (ALIGN_D(sizeof(struct cmsghdr)) + \ + length) + +/* Set socket options argument */ +#define IFNAMSIZ NETIF_NAMESIZE +struct ifreq { + char ifr_name[IFNAMSIZ]; /* Interface name */ +}; + +/* Socket protocol types (TCP/UDP/RAW) */ +#define SOCK_STREAM 1 +#define SOCK_DGRAM 2 +#define SOCK_RAW 3 + +/* + * Option flags per-socket. These must match the SOF_ flags in ip.h (checked in init.c) + */ +#define SO_REUSEADDR 0x0004 /* Allow local address reuse */ +#define SO_KEEPALIVE 0x0008 /* keep connections alive */ +#define SO_BROADCAST 0x0020 /* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */ + + +/* + * Additional options, not kept in so_options. + */ +#define SO_DEBUG 0x0001 /* Unimplemented: turn on debugging info recording */ +#define SO_ACCEPTCONN 0x0002 /* socket has had listen() */ +#define SO_DONTROUTE 0x0010 /* Unimplemented: just use interface addresses */ +#define SO_USELOOPBACK 0x0040 /* Unimplemented: bypass hardware when possible */ +#define SO_LINGER 0x0080 /* linger on close if data present */ +#define SO_DONTLINGER ((int)(~SO_LINGER)) +#define SO_OOBINLINE 0x0100 /* Unimplemented: leave received OOB data in line */ +#define SO_REUSEPORT 0x0200 /* Unimplemented: allow local address & port reuse */ +#define SO_SNDBUF 0x1001 /* Unimplemented: send buffer size */ +#define SO_RCVBUF 0x1002 /* receive buffer size */ +#define SO_SNDLOWAT 0x1003 /* Unimplemented: send low-water mark */ +#define SO_RCVLOWAT 0x1004 /* Unimplemented: receive low-water mark */ +#define SO_SNDTIMEO 0x1005 /* send timeout */ +#define SO_RCVTIMEO 0x1006 /* receive timeout */ +#define SO_ERROR 0x1007 /* get error status and clear */ +#define SO_TYPE 0x1008 /* get socket type */ +#define SO_CONTIMEO 0x1009 /* Unimplemented: connect timeout */ +#define SO_NO_CHECK 0x100a /* don't create UDP checksum */ +#define SO_BINDTODEVICE 0x100b /* bind to device */ + +/* + * Structure used for manipulating linger option. + */ +struct linger { + int l_onoff; /* option on/off */ + int l_linger; /* linger time in seconds */ +}; + +/* + * Level number for (get/set)sockopt() to apply to socket itself. + */ +#define SOL_SOCKET 0xfff /* options for socket level */ + + +#define AF_UNSPEC 0 +#define AF_INET 2 +#if LWIP_IPV6 +#define AF_INET6 10 +#else /* LWIP_IPV6 */ +#define AF_INET6 AF_UNSPEC +#endif /* LWIP_IPV6 */ +#define PF_INET AF_INET +#define PF_INET6 AF_INET6 +#define PF_UNSPEC AF_UNSPEC + +#define IPPROTO_IP 0 +#define IPPROTO_ICMP 1 +#define IPPROTO_TCP 6 +#define IPPROTO_UDP 17 +#if LWIP_IPV6 +#define IPPROTO_IPV6 41 +#define IPPROTO_ICMPV6 58 +#endif /* LWIP_IPV6 */ +#define IPPROTO_UDPLITE 136 +#define IPPROTO_RAW 255 + +/* Flags we can use with send and recv. */ +#define MSG_PEEK 0x01 /* Peeks at an incoming message */ +#define MSG_WAITALL 0x02 /* Unimplemented: Requests that the function block until the full amount of data requested can be returned */ +#define MSG_OOB 0x04 /* Unimplemented: Requests out-of-band data. The significance and semantics of out-of-band data are protocol-specific */ +#define MSG_DONTWAIT 0x08 /* Nonblocking i/o for this operation only */ +#define MSG_MORE 0x10 /* Sender will send more */ +#define MSG_NOSIGNAL 0x20 /* Uninmplemented: Requests not to send the SIGPIPE signal if an attempt to send is made on a stream-oriented socket that is no longer connected. */ + + +/* + * Options for level IPPROTO_IP + */ +#define IP_TOS 1 +#define IP_TTL 2 +#define IP_PKTINFO 8 + +#if LWIP_TCP +/* + * Options for level IPPROTO_TCP + */ +#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */ +#define TCP_KEEPALIVE 0x02 /* send KEEPALIVE probes when idle for pcb->keep_idle milliseconds */ +#define TCP_KEEPIDLE 0x03 /* set pcb->keep_idle - Same as TCP_KEEPALIVE, but use seconds for get/setsockopt */ +#define TCP_KEEPINTVL 0x04 /* set pcb->keep_intvl - Use seconds for get/setsockopt */ +#define TCP_KEEPCNT 0x05 /* set pcb->keep_cnt - Use number of probes sent for get/setsockopt */ +#endif /* LWIP_TCP */ + +#if LWIP_IPV6 +/* + * Options for level IPPROTO_IPV6 + */ +#define IPV6_CHECKSUM 7 /* RFC3542: calculate and insert the ICMPv6 checksum for raw sockets. */ +#define IPV6_V6ONLY 27 /* RFC3493: boolean control to restrict AF_INET6 sockets to IPv6 communications only. */ +#endif /* LWIP_IPV6 */ + +#if LWIP_UDP && LWIP_UDPLITE +/* + * Options for level IPPROTO_UDPLITE + */ +#define UDPLITE_SEND_CSCOV 0x01 /* sender checksum coverage */ +#define UDPLITE_RECV_CSCOV 0x02 /* minimal receiver checksum coverage */ +#endif /* LWIP_UDP && LWIP_UDPLITE*/ + + +#if LWIP_MULTICAST_TX_OPTIONS +/* + * Options and types for UDP multicast traffic handling + */ +#define IP_MULTICAST_TTL 5 +#define IP_MULTICAST_IF 6 +#define IP_MULTICAST_LOOP 7 +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + +#if LWIP_IGMP +/* + * Options and types related to multicast membership + */ +#define IP_ADD_MEMBERSHIP 3 +#define IP_DROP_MEMBERSHIP 4 + +typedef struct ip_mreq { + struct in_addr imr_multiaddr; /* IP multicast address of group */ + struct in_addr imr_interface; /* local IP address of interface */ +} ip_mreq; +#endif /* LWIP_IGMP */ + +#if LWIP_IPV4 +struct in_pktinfo { + unsigned int ipi_ifindex; /* Interface index */ + struct in_addr ipi_addr; /* Destination (from header) address */ +}; +#endif /* LWIP_IPV4 */ + +#if LWIP_IPV6_MLD +/* + * Options and types related to IPv6 multicast membership + */ +#define IPV6_JOIN_GROUP 12 +#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP +#define IPV6_LEAVE_GROUP 13 +#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP + +typedef struct ipv6_mreq { + struct in6_addr ipv6mr_multiaddr; /* IPv6 multicast addr */ + unsigned int ipv6mr_interface; /* interface index, or 0 */ +} ipv6_mreq; +#endif /* LWIP_IPV6_MLD */ + +/* + * The Type of Service provides an indication of the abstract + * parameters of the quality of service desired. These parameters are + * to be used to guide the selection of the actual service parameters + * when transmitting a datagram through a particular network. Several + * networks offer service precedence, which somehow treats high + * precedence traffic as more important than other traffic (generally + * by accepting only traffic above a certain precedence at time of high + * load). The major choice is a three way tradeoff between low-delay, + * high-reliability, and high-throughput. + * The use of the Delay, Throughput, and Reliability indications may + * increase the cost (in some sense) of the service. In many networks + * better performance for one of these parameters is coupled with worse + * performance on another. Except for very unusual cases at most two + * of these three indications should be set. + */ +#define IPTOS_TOS_MASK 0x1E +#define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK) +#define IPTOS_LOWDELAY 0x10 +#define IPTOS_THROUGHPUT 0x08 +#define IPTOS_RELIABILITY 0x04 +#define IPTOS_LOWCOST 0x02 +#define IPTOS_MINCOST IPTOS_LOWCOST + +/* + * The Network Control precedence designation is intended to be used + * within a network only. The actual use and control of that + * designation is up to each network. The Internetwork Control + * designation is intended for use by gateway control originators only. + * If the actual use of these precedence designations is of concern to + * a particular network, it is the responsibility of that network to + * control the access to, and use of, those precedence designations. + */ +#define IPTOS_PREC_MASK 0xe0 +#define IPTOS_PREC(tos) ((tos) & IPTOS_PREC_MASK) +#define IPTOS_PREC_NETCONTROL 0xe0 +#define IPTOS_PREC_INTERNETCONTROL 0xc0 +#define IPTOS_PREC_CRITIC_ECP 0xa0 +#define IPTOS_PREC_FLASHOVERRIDE 0x80 +#define IPTOS_PREC_FLASH 0x60 +#define IPTOS_PREC_IMMEDIATE 0x40 +#define IPTOS_PREC_PRIORITY 0x20 +#define IPTOS_PREC_ROUTINE 0x00 + + +/* + * Commands for ioctlsocket(), taken from the BSD file fcntl.h. + * lwip_ioctl only supports FIONREAD and FIONBIO, for now + * + * Ioctl's have the command encoded in the lower word, + * and the size of any in or out parameters in the upper + * word. The high 2 bits of the upper word are used + * to encode the in/out status of the parameter; for now + * we restrict parameters to at most 128 bytes. + */ +#if !defined(FIONREAD) || !defined(FIONBIO) +#define IOCPARM_MASK 0x7fU /* parameters must be < 128 bytes */ +#define IOC_VOID 0x20000000UL /* no parameters */ +#define IOC_OUT 0x40000000UL /* copy out parameters */ +#define IOC_IN 0x80000000UL /* copy in parameters */ +#define IOC_INOUT (IOC_IN|IOC_OUT) + /* 0x20000000 distinguishes new & + old ioctl's */ +#define _IO(x,y) ((long)(IOC_VOID|((x)<<8)|(y))) + +#define _IOR(x,y,t) ((long)(IOC_OUT|((sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))) + +#define _IOW(x,y,t) ((long)(IOC_IN|((sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))) +#endif /* !defined(FIONREAD) || !defined(FIONBIO) */ + +#ifndef FIONREAD +#define FIONREAD _IOR('f', 127, unsigned long) /* get # bytes to read */ +#endif +#ifndef FIONBIO +#define FIONBIO _IOW('f', 126, unsigned long) /* set/clear non-blocking i/o */ +#endif + +/* Socket I/O Controls: unimplemented */ +#ifndef SIOCSHIWAT +#define SIOCSHIWAT _IOW('s', 0, unsigned long) /* set high watermark */ +#define SIOCGHIWAT _IOR('s', 1, unsigned long) /* get high watermark */ +#define SIOCSLOWAT _IOW('s', 2, unsigned long) /* set low watermark */ +#define SIOCGLOWAT _IOR('s', 3, unsigned long) /* get low watermark */ +#define SIOCATMARK _IOR('s', 7, unsigned long) /* at oob mark? */ +#endif + +/* commands for fnctl */ +#ifndef F_GETFL +#define F_GETFL 3 +#endif +#ifndef F_SETFL +#define F_SETFL 4 +#endif + +/* File status flags and file access modes for fnctl, + these are bits in an int. */ +#ifndef O_NONBLOCK +#define O_NONBLOCK 1 /* nonblocking I/O */ +#endif +#ifndef O_NDELAY +#define O_NDELAY O_NONBLOCK /* same as O_NONBLOCK, for compatibility */ +#endif +#ifndef O_RDONLY +#define O_RDONLY 2 +#endif +#ifndef O_WRONLY +#define O_WRONLY 4 +#endif +#ifndef O_RDWR +#define O_RDWR (O_RDONLY|O_WRONLY) +#endif + +#ifndef SHUT_RD + #define SHUT_RD 0 + #define SHUT_WR 1 + #define SHUT_RDWR 2 +#endif + +/* FD_SET used for lwip_select */ +#ifndef FD_SET +#undef FD_SETSIZE +/* Make FD_SETSIZE match NUM_SOCKETS in socket.c */ +#define FD_SETSIZE MEMP_NUM_NETCONN +#define LWIP_SELECT_MAXNFDS (FD_SETSIZE + LWIP_SOCKET_OFFSET) +#define FDSETSAFESET(n, code) do { \ + if (((n) - LWIP_SOCKET_OFFSET < MEMP_NUM_NETCONN) && (((int)(n) - LWIP_SOCKET_OFFSET) >= 0)) { \ + code; }} while(0) +#define FDSETSAFEGET(n, code) (((n) - LWIP_SOCKET_OFFSET < MEMP_NUM_NETCONN) && (((int)(n) - LWIP_SOCKET_OFFSET) >= 0) ?\ + (code) : 0) +#define FD_SET(n, p) FDSETSAFESET(n, (p)->fd_bits[((n)-LWIP_SOCKET_OFFSET)/8] = (u8_t)((p)->fd_bits[((n)-LWIP_SOCKET_OFFSET)/8] | (1 << (((n)-LWIP_SOCKET_OFFSET) & 7)))) +#define FD_CLR(n, p) FDSETSAFESET(n, (p)->fd_bits[((n)-LWIP_SOCKET_OFFSET)/8] = (u8_t)((p)->fd_bits[((n)-LWIP_SOCKET_OFFSET)/8] & ~(1 << (((n)-LWIP_SOCKET_OFFSET) & 7)))) +#define FD_ISSET(n,p) FDSETSAFEGET(n, (p)->fd_bits[((n)-LWIP_SOCKET_OFFSET)/8] & (1 << (((n)-LWIP_SOCKET_OFFSET) & 7))) +#define FD_ZERO(p) memset((void*)(p), 0, sizeof(*(p))) + +typedef struct fd_set +{ + unsigned char fd_bits [(FD_SETSIZE+7)/8]; +} fd_set; + +#elif FD_SETSIZE < (LWIP_SOCKET_OFFSET + MEMP_NUM_NETCONN) +#error "external FD_SETSIZE too small for number of sockets" +#else +#define LWIP_SELECT_MAXNFDS FD_SETSIZE +#endif /* FD_SET */ + +/* poll-related defines and types */ +/* @todo: find a better way to guard the definition of these defines and types if already defined */ +#if !defined(POLLIN) && !defined(POLLOUT) +#define POLLIN 0x1 +#define POLLOUT 0x2 +#define POLLERR 0x4 +#define POLLNVAL 0x8 +/* Below values are unimplemented */ +#define POLLRDNORM 0x10 +#define POLLRDBAND 0x20 +#define POLLPRI 0x40 +#define POLLWRNORM 0x80 +#define POLLWRBAND 0x100 +#define POLLHUP 0x200 +typedef unsigned int nfds_t; +struct pollfd +{ + int fd; + short events; + short revents; +}; +#endif + +/** LWIP_TIMEVAL_PRIVATE: if you want to use the struct timeval provided + * by your system, set this to 0 and include in cc.h */ +#ifndef LWIP_TIMEVAL_PRIVATE +#define LWIP_TIMEVAL_PRIVATE 1 +#endif + +#if LWIP_TIMEVAL_PRIVATE +struct timeval { + long tv_sec; /* seconds */ + long tv_usec; /* and microseconds */ +}; +#endif /* LWIP_TIMEVAL_PRIVATE */ + +#define lwip_socket_init() /* Compatibility define, no init needed. */ +void lwip_socket_thread_init(void); /* LWIP_NETCONN_SEM_PER_THREAD==1: initialize thread-local semaphore */ +void lwip_socket_thread_cleanup(void); /* LWIP_NETCONN_SEM_PER_THREAD==1: destroy thread-local semaphore */ + +#if LWIP_COMPAT_SOCKETS == 2 +/* This helps code parsers/code completion by not having the COMPAT functions as defines */ +#define lwip_accept accept +#define lwip_bind bind +#define lwip_shutdown shutdown +#define lwip_getpeername getpeername +#define lwip_getsockname getsockname +#define lwip_setsockopt setsockopt +#define lwip_getsockopt getsockopt +#define lwip_close closesocket +#define lwip_connect connect +#define lwip_listen listen +#define lwip_recv recv +#define lwip_recvmsg recvmsg +#define lwip_recvfrom recvfrom +#define lwip_send send +#define lwip_sendmsg sendmsg +#define lwip_sendto sendto +#define lwip_socket socket +#if LWIP_SOCKET_SELECT +#define lwip_select select +#endif +#if LWIP_SOCKET_POLL +#define lwip_poll poll +#endif +#define lwip_ioctl ioctlsocket +#define lwip_inet_ntop inet_ntop +#define lwip_inet_pton inet_pton + +#if LWIP_POSIX_SOCKETS_IO_NAMES +#define lwip_read read +#define lwip_readv readv +#define lwip_write write +#define lwip_writev writev +#undef lwip_close +#define lwip_close close +#define closesocket(s) close(s) +int fcntl(int s, int cmd, ...); +#undef lwip_ioctl +#define lwip_ioctl ioctl +#define ioctlsocket ioctl +#endif /* LWIP_POSIX_SOCKETS_IO_NAMES */ +#endif /* LWIP_COMPAT_SOCKETS == 2 */ + +int lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen); +int lwip_bind(int s, const struct sockaddr *name, socklen_t namelen); +int lwip_shutdown(int s, int how); +int lwip_getpeername (int s, struct sockaddr *name, socklen_t *namelen); +int lwip_getsockname (int s, struct sockaddr *name, socklen_t *namelen); +int lwip_getsockopt (int s, int level, int optname, void *optval, socklen_t *optlen); +int lwip_setsockopt (int s, int level, int optname, const void *optval, socklen_t optlen); + int lwip_close(int s); +int lwip_connect(int s, const struct sockaddr *name, socklen_t namelen); +int lwip_listen(int s, int backlog); +ssize_t lwip_recv(int s, void *mem, size_t len, int flags); +ssize_t lwip_read(int s, void *mem, size_t len); +ssize_t lwip_readv(int s, const struct iovec *iov, int iovcnt); +ssize_t lwip_recvfrom(int s, void *mem, size_t len, int flags, + struct sockaddr *from, socklen_t *fromlen); +ssize_t lwip_recvmsg(int s, struct msghdr *message, int flags); +ssize_t lwip_send(int s, const void *dataptr, size_t size, int flags); +ssize_t lwip_sendmsg(int s, const struct msghdr *message, int flags); +ssize_t lwip_sendto(int s, const void *dataptr, size_t size, int flags, + const struct sockaddr *to, socklen_t tolen); +int lwip_socket(int domain, int type, int protocol); +ssize_t lwip_write(int s, const void *dataptr, size_t size); +ssize_t lwip_writev(int s, const struct iovec *iov, int iovcnt); +#if LWIP_SOCKET_SELECT +int lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset, + struct timeval *timeout); +#endif +#if LWIP_SOCKET_POLL +int lwip_poll(struct pollfd *fds, nfds_t nfds, int timeout); +#endif +int lwip_ioctl(int s, long cmd, void *argp); +int lwip_fcntl(int s, int cmd, int val); +const char *lwip_inet_ntop(int af, const void *src, char *dst, socklen_t size); +int lwip_inet_pton(int af, const char *src, void *dst); + +#if LWIP_COMPAT_SOCKETS +#if LWIP_COMPAT_SOCKETS != 2 +/** @ingroup socket */ +#define accept(s,addr,addrlen) lwip_accept(s,addr,addrlen) +/** @ingroup socket */ +#define bind(s,name,namelen) lwip_bind(s,name,namelen) +/** @ingroup socket */ +#define shutdown(s,how) lwip_shutdown(s,how) +/** @ingroup socket */ +#define getpeername(s,name,namelen) lwip_getpeername(s,name,namelen) +/** @ingroup socket */ +#define getsockname(s,name,namelen) lwip_getsockname(s,name,namelen) +/** @ingroup socket */ +#define setsockopt(s,level,optname,opval,optlen) lwip_setsockopt(s,level,optname,opval,optlen) +/** @ingroup socket */ +#define getsockopt(s,level,optname,opval,optlen) lwip_getsockopt(s,level,optname,opval,optlen) +/** @ingroup socket */ +#define closesocket(s) lwip_close(s) +/** @ingroup socket */ +#define connect(s,name,namelen) lwip_connect(s,name,namelen) +/** @ingroup socket */ +#define listen(s,backlog) lwip_listen(s,backlog) +/** @ingroup socket */ +#define recv(s,mem,len,flags) lwip_recv(s,mem,len,flags) +/** @ingroup socket */ +#define recvmsg(s,message,flags) lwip_recvmsg(s,message,flags) +/** @ingroup socket */ +#define recvfrom(s,mem,len,flags,from,fromlen) lwip_recvfrom(s,mem,len,flags,from,fromlen) +/** @ingroup socket */ +#define send(s,dataptr,size,flags) lwip_send(s,dataptr,size,flags) +/** @ingroup socket */ +#define sendmsg(s,message,flags) lwip_sendmsg(s,message,flags) +/** @ingroup socket */ +#define sendto(s,dataptr,size,flags,to,tolen) lwip_sendto(s,dataptr,size,flags,to,tolen) +/** @ingroup socket */ +#define socket(domain,type,protocol) lwip_socket(domain,type,protocol) +#if LWIP_SOCKET_SELECT +/** @ingroup socket */ +#define select(maxfdp1,readset,writeset,exceptset,timeout) lwip_select(maxfdp1,readset,writeset,exceptset,timeout) +#endif +#if LWIP_SOCKET_POLL +/** @ingroup socket */ +#define poll(fds,nfds,timeout) lwip_poll(fds,nfds,timeout) +#endif +/** @ingroup socket */ +#define ioctlsocket(s,cmd,argp) lwip_ioctl(s,cmd,argp) +/** @ingroup socket */ +#define inet_ntop(af,src,dst,size) lwip_inet_ntop(af,src,dst,size) +/** @ingroup socket */ +#define inet_pton(af,src,dst) lwip_inet_pton(af,src,dst) + +#if LWIP_POSIX_SOCKETS_IO_NAMES +/** @ingroup socket */ +#define read(s,mem,len) lwip_read(s,mem,len) +/** @ingroup socket */ +#define readv(s,iov,iovcnt) lwip_readv(s,iov,iovcnt) +/** @ingroup socket */ +#define write(s,dataptr,len) lwip_write(s,dataptr,len) +/** @ingroup socket */ +#define writev(s,iov,iovcnt) lwip_writev(s,iov,iovcnt) +/** @ingroup socket */ +#define close(s) lwip_close(s) +/** @ingroup socket */ +#define fcntl(s,cmd,val) lwip_fcntl(s,cmd,val) +/** @ingroup socket */ +#define ioctl(s,cmd,argp) lwip_ioctl(s,cmd,argp) +#endif /* LWIP_POSIX_SOCKETS_IO_NAMES */ +#endif /* LWIP_COMPAT_SOCKETS != 2 */ + +#endif /* LWIP_COMPAT_SOCKETS */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_SOCKET */ + +#endif /* LWIP_HDR_SOCKETS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/stats.h b/Other/tun2socks/core/c/include/lwip/stats.h new file mode 100644 index 0000000..b570dba --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/stats.h @@ -0,0 +1,491 @@ +/** + * @file + * Statistics API (to be used from TCPIP thread) + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_STATS_H +#define LWIP_HDR_STATS_H + +#include "lwip/opt.h" + +#include "lwip/mem.h" +#include "lwip/memp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_STATS + +#ifndef LWIP_STATS_LARGE +#define LWIP_STATS_LARGE 0 +#endif + +#if LWIP_STATS_LARGE +#define STAT_COUNTER u32_t +#define STAT_COUNTER_F U32_F +#else +#define STAT_COUNTER u16_t +#define STAT_COUNTER_F U16_F +#endif + +/** Protocol related stats */ +struct stats_proto { + STAT_COUNTER xmit; /* Transmitted packets. */ + STAT_COUNTER recv; /* Received packets. */ + STAT_COUNTER fw; /* Forwarded packets. */ + STAT_COUNTER drop; /* Dropped packets. */ + STAT_COUNTER chkerr; /* Checksum error. */ + STAT_COUNTER lenerr; /* Invalid length error. */ + STAT_COUNTER memerr; /* Out of memory error. */ + STAT_COUNTER rterr; /* Routing error. */ + STAT_COUNTER proterr; /* Protocol error. */ + STAT_COUNTER opterr; /* Error in options. */ + STAT_COUNTER err; /* Misc error. */ + STAT_COUNTER cachehit; +}; + +/** IGMP stats */ +struct stats_igmp { + STAT_COUNTER xmit; /* Transmitted packets. */ + STAT_COUNTER recv; /* Received packets. */ + STAT_COUNTER drop; /* Dropped packets. */ + STAT_COUNTER chkerr; /* Checksum error. */ + STAT_COUNTER lenerr; /* Invalid length error. */ + STAT_COUNTER memerr; /* Out of memory error. */ + STAT_COUNTER proterr; /* Protocol error. */ + STAT_COUNTER rx_v1; /* Received v1 frames. */ + STAT_COUNTER rx_group; /* Received group-specific queries. */ + STAT_COUNTER rx_general; /* Received general queries. */ + STAT_COUNTER rx_report; /* Received reports. */ + STAT_COUNTER tx_join; /* Sent joins. */ + STAT_COUNTER tx_leave; /* Sent leaves. */ + STAT_COUNTER tx_report; /* Sent reports. */ +}; + +/** Memory stats */ +struct stats_mem { +#if defined(LWIP_DEBUG) || LWIP_STATS_DISPLAY + const char *name; +#endif /* defined(LWIP_DEBUG) || LWIP_STATS_DISPLAY */ + STAT_COUNTER err; + mem_size_t avail; + mem_size_t used; + mem_size_t max; + STAT_COUNTER illegal; +}; + +/** System element stats */ +struct stats_syselem { + STAT_COUNTER used; + STAT_COUNTER max; + STAT_COUNTER err; +}; + +/** System stats */ +struct stats_sys { + struct stats_syselem sem; + struct stats_syselem mutex; + struct stats_syselem mbox; +}; + +/** SNMP MIB2 stats */ +struct stats_mib2 { + /* IP */ + u32_t ipinhdrerrors; + u32_t ipinaddrerrors; + u32_t ipinunknownprotos; + u32_t ipindiscards; + u32_t ipindelivers; + u32_t ipoutrequests; + u32_t ipoutdiscards; + u32_t ipoutnoroutes; + u32_t ipreasmoks; + u32_t ipreasmfails; + u32_t ipfragoks; + u32_t ipfragfails; + u32_t ipfragcreates; + u32_t ipreasmreqds; + u32_t ipforwdatagrams; + u32_t ipinreceives; + + /* TCP */ + u32_t tcpactiveopens; + u32_t tcppassiveopens; + u32_t tcpattemptfails; + u32_t tcpestabresets; + u32_t tcpoutsegs; + u32_t tcpretranssegs; + u32_t tcpinsegs; + u32_t tcpinerrs; + u32_t tcpoutrsts; + + /* UDP */ + u32_t udpindatagrams; + u32_t udpnoports; + u32_t udpinerrors; + u32_t udpoutdatagrams; + + /* ICMP */ + u32_t icmpinmsgs; + u32_t icmpinerrors; + u32_t icmpindestunreachs; + u32_t icmpintimeexcds; + u32_t icmpinparmprobs; + u32_t icmpinsrcquenchs; + u32_t icmpinredirects; + u32_t icmpinechos; + u32_t icmpinechoreps; + u32_t icmpintimestamps; + u32_t icmpintimestampreps; + u32_t icmpinaddrmasks; + u32_t icmpinaddrmaskreps; + u32_t icmpoutmsgs; + u32_t icmpouterrors; + u32_t icmpoutdestunreachs; + u32_t icmpouttimeexcds; + u32_t icmpoutechos; /* can be incremented by user application ('ping') */ + u32_t icmpoutechoreps; +}; + +/** + * @ingroup netif_mib2 + * SNMP MIB2 interface stats + */ +struct stats_mib2_netif_ctrs { + /** The total number of octets received on the interface, including framing characters */ + u32_t ifinoctets; + /** The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were + * not addressed to a multicast or broadcast address at this sub-layer */ + u32_t ifinucastpkts; + /** The number of packets, delivered by this sub-layer to a higher (sub-)layer, which were + * addressed to a multicast or broadcast address at this sub-layer */ + u32_t ifinnucastpkts; + /** The number of inbound packets which were chosen to be discarded even though no errors had + * been detected to prevent their being deliverable to a higher-layer protocol. One possible + * reason for discarding such a packet could be to free up buffer space */ + u32_t ifindiscards; + /** For packet-oriented interfaces, the number of inbound packets that contained errors + * preventing them from being deliverable to a higher-layer protocol. For character- + * oriented or fixed-length interfaces, the number of inbound transmission units that + * contained errors preventing them from being deliverable to a higher-layer protocol. */ + u32_t ifinerrors; + /** For packet-oriented interfaces, the number of packets received via the interface which + * were discarded because of an unknown or unsupported protocol. For character-oriented + * or fixed-length interfaces that support protocol multiplexing the number of transmission + * units received via the interface which were discarded because of an unknown or unsupported + * protocol. For any interface that does not support protocol multiplexing, this counter will + * always be 0 */ + u32_t ifinunknownprotos; + /** The total number of octets transmitted out of the interface, including framing characters. */ + u32_t ifoutoctets; + /** The total number of packets that higher-level protocols requested be transmitted, and + * which were not addressed to a multicast or broadcast address at this sub-layer, including + * those that were discarded or not sent. */ + u32_t ifoutucastpkts; + /** The total number of packets that higher-level protocols requested be transmitted, and which + * were addressed to a multicast or broadcast address at this sub-layer, including + * those that were discarded or not sent. */ + u32_t ifoutnucastpkts; + /** The number of outbound packets which were chosen to be discarded even though no errors had + * been detected to prevent their being transmitted. One possible reason for discarding + * such a packet could be to free up buffer space. */ + u32_t ifoutdiscards; + /** For packet-oriented interfaces, the number of outbound packets that could not be transmitted + * because of errors. For character-oriented or fixed-length interfaces, the number of outbound + * transmission units that could not be transmitted because of errors. */ + u32_t ifouterrors; +}; + +/** lwIP stats container */ +struct stats_ { +#if LINK_STATS + /** Link level */ + struct stats_proto link; +#endif +#if ETHARP_STATS + /** ARP */ + struct stats_proto etharp; +#endif +#if IPFRAG_STATS + /** Fragmentation */ + struct stats_proto ip_frag; +#endif +#if IP_STATS + /** IP */ + struct stats_proto ip; +#endif +#if ICMP_STATS + /** ICMP */ + struct stats_proto icmp; +#endif +#if IGMP_STATS + /** IGMP */ + struct stats_igmp igmp; +#endif +#if UDP_STATS + /** UDP */ + struct stats_proto udp; +#endif +#if TCP_STATS + /** TCP */ + struct stats_proto tcp; +#endif +#if MEM_STATS + /** Heap */ + struct stats_mem mem; +#endif +#if MEMP_STATS + /** Internal memory pools */ + struct stats_mem *memp[MEMP_MAX]; +#endif +#if SYS_STATS + /** System */ + struct stats_sys sys; +#endif +#if IP6_STATS + /** IPv6 */ + struct stats_proto ip6; +#endif +#if ICMP6_STATS + /** ICMP6 */ + struct stats_proto icmp6; +#endif +#if IP6_FRAG_STATS + /** IPv6 fragmentation */ + struct stats_proto ip6_frag; +#endif +#if MLD6_STATS + /** Multicast listener discovery */ + struct stats_igmp mld6; +#endif +#if ND6_STATS + /** Neighbor discovery */ + struct stats_proto nd6; +#endif +#if MIB2_STATS + /** SNMP MIB2 */ + struct stats_mib2 mib2; +#endif +}; + +/** Global variable containing lwIP internal statistics. Add this to your debugger's watchlist. */ +extern struct stats_ lwip_stats; + +/** Init statistics */ +void stats_init(void); + +#define STATS_INC(x) ++lwip_stats.x +#define STATS_DEC(x) --lwip_stats.x +#define STATS_INC_USED(x, y, type) do { lwip_stats.x.used = (type)(lwip_stats.x.used + y); \ + if (lwip_stats.x.max < lwip_stats.x.used) { \ + lwip_stats.x.max = lwip_stats.x.used; \ + } \ + } while(0) +#define STATS_GET(x) lwip_stats.x +#else /* LWIP_STATS */ +#define stats_init() +#define STATS_INC(x) +#define STATS_DEC(x) +#define STATS_INC_USED(x, y, type) +#endif /* LWIP_STATS */ + +#if TCP_STATS +#define TCP_STATS_INC(x) STATS_INC(x) +#define TCP_STATS_DISPLAY() stats_display_proto(&lwip_stats.tcp, "TCP") +#else +#define TCP_STATS_INC(x) +#define TCP_STATS_DISPLAY() +#endif + +#if UDP_STATS +#define UDP_STATS_INC(x) STATS_INC(x) +#define UDP_STATS_DISPLAY() stats_display_proto(&lwip_stats.udp, "UDP") +#else +#define UDP_STATS_INC(x) +#define UDP_STATS_DISPLAY() +#endif + +#if ICMP_STATS +#define ICMP_STATS_INC(x) STATS_INC(x) +#define ICMP_STATS_DISPLAY() stats_display_proto(&lwip_stats.icmp, "ICMP") +#else +#define ICMP_STATS_INC(x) +#define ICMP_STATS_DISPLAY() +#endif + +#if IGMP_STATS +#define IGMP_STATS_INC(x) STATS_INC(x) +#define IGMP_STATS_DISPLAY() stats_display_igmp(&lwip_stats.igmp, "IGMP") +#else +#define IGMP_STATS_INC(x) +#define IGMP_STATS_DISPLAY() +#endif + +#if IP_STATS +#define IP_STATS_INC(x) STATS_INC(x) +#define IP_STATS_DISPLAY() stats_display_proto(&lwip_stats.ip, "IP") +#else +#define IP_STATS_INC(x) +#define IP_STATS_DISPLAY() +#endif + +#if IPFRAG_STATS +#define IPFRAG_STATS_INC(x) STATS_INC(x) +#define IPFRAG_STATS_DISPLAY() stats_display_proto(&lwip_stats.ip_frag, "IP_FRAG") +#else +#define IPFRAG_STATS_INC(x) +#define IPFRAG_STATS_DISPLAY() +#endif + +#if ETHARP_STATS +#define ETHARP_STATS_INC(x) STATS_INC(x) +#define ETHARP_STATS_DISPLAY() stats_display_proto(&lwip_stats.etharp, "ETHARP") +#else +#define ETHARP_STATS_INC(x) +#define ETHARP_STATS_DISPLAY() +#endif + +#if LINK_STATS +#define LINK_STATS_INC(x) STATS_INC(x) +#define LINK_STATS_DISPLAY() stats_display_proto(&lwip_stats.link, "LINK") +#else +#define LINK_STATS_INC(x) +#define LINK_STATS_DISPLAY() +#endif + +#if MEM_STATS +#define MEM_STATS_AVAIL(x, y) lwip_stats.mem.x = y +#define MEM_STATS_INC(x) STATS_INC(mem.x) +#define MEM_STATS_INC_USED(x, y) STATS_INC_USED(mem, y, mem_size_t) +#define MEM_STATS_DEC_USED(x, y) lwip_stats.mem.x = (mem_size_t)((lwip_stats.mem.x) - (y)) +#define MEM_STATS_DISPLAY() stats_display_mem(&lwip_stats.mem, "HEAP") +#else +#define MEM_STATS_AVAIL(x, y) +#define MEM_STATS_INC(x) +#define MEM_STATS_INC_USED(x, y) +#define MEM_STATS_DEC_USED(x, y) +#define MEM_STATS_DISPLAY() +#endif + + #if MEMP_STATS +#define MEMP_STATS_DEC(x, i) STATS_DEC(memp[i]->x) +#define MEMP_STATS_DISPLAY(i) stats_display_memp(lwip_stats.memp[i], i) +#define MEMP_STATS_GET(x, i) STATS_GET(memp[i]->x) + #else +#define MEMP_STATS_DEC(x, i) +#define MEMP_STATS_DISPLAY(i) +#define MEMP_STATS_GET(x, i) 0 +#endif + +#if SYS_STATS +#define SYS_STATS_INC(x) STATS_INC(sys.x) +#define SYS_STATS_DEC(x) STATS_DEC(sys.x) +#define SYS_STATS_INC_USED(x) STATS_INC_USED(sys.x, 1, STAT_COUNTER) +#define SYS_STATS_DISPLAY() stats_display_sys(&lwip_stats.sys) +#else +#define SYS_STATS_INC(x) +#define SYS_STATS_DEC(x) +#define SYS_STATS_INC_USED(x) +#define SYS_STATS_DISPLAY() +#endif + +#if IP6_STATS +#define IP6_STATS_INC(x) STATS_INC(x) +#define IP6_STATS_DISPLAY() stats_display_proto(&lwip_stats.ip6, "IPv6") +#else +#define IP6_STATS_INC(x) +#define IP6_STATS_DISPLAY() +#endif + +#if ICMP6_STATS +#define ICMP6_STATS_INC(x) STATS_INC(x) +#define ICMP6_STATS_DISPLAY() stats_display_proto(&lwip_stats.icmp6, "ICMPv6") +#else +#define ICMP6_STATS_INC(x) +#define ICMP6_STATS_DISPLAY() +#endif + +#if IP6_FRAG_STATS +#define IP6_FRAG_STATS_INC(x) STATS_INC(x) +#define IP6_FRAG_STATS_DISPLAY() stats_display_proto(&lwip_stats.ip6_frag, "IPv6 FRAG") +#else +#define IP6_FRAG_STATS_INC(x) +#define IP6_FRAG_STATS_DISPLAY() +#endif + +#if MLD6_STATS +#define MLD6_STATS_INC(x) STATS_INC(x) +#define MLD6_STATS_DISPLAY() stats_display_igmp(&lwip_stats.mld6, "MLDv1") +#else +#define MLD6_STATS_INC(x) +#define MLD6_STATS_DISPLAY() +#endif + +#if ND6_STATS +#define ND6_STATS_INC(x) STATS_INC(x) +#define ND6_STATS_DISPLAY() stats_display_proto(&lwip_stats.nd6, "ND") +#else +#define ND6_STATS_INC(x) +#define ND6_STATS_DISPLAY() +#endif + +#if MIB2_STATS +#define MIB2_STATS_INC(x) STATS_INC(x) +#else +#define MIB2_STATS_INC(x) +#endif + +/* Display of statistics */ +#if LWIP_STATS_DISPLAY +void stats_display(void); +void stats_display_proto(struct stats_proto *proto, const char *name); +void stats_display_igmp(struct stats_igmp *igmp, const char *name); +void stats_display_mem(struct stats_mem *mem, const char *name); +void stats_display_memp(struct stats_mem *mem, int index); +void stats_display_sys(struct stats_sys *sys); +#else /* LWIP_STATS_DISPLAY */ +#define stats_display() +#define stats_display_proto(proto, name) +#define stats_display_igmp(igmp, name) +#define stats_display_mem(mem, name) +#define stats_display_memp(mem, index) +#define stats_display_sys(sys) +#endif /* LWIP_STATS_DISPLAY */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_STATS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/sys.h b/Other/tun2socks/core/c/include/lwip/sys.h new file mode 100644 index 0000000..168e465 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/sys.h @@ -0,0 +1,560 @@ +/** + * @file + * OS abstraction layer + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + */ + +#ifndef LWIP_HDR_SYS_H +#define LWIP_HDR_SYS_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if NO_SYS + +/* For a totally minimal and standalone system, we provide null + definitions of the sys_ functions. */ +typedef u8_t sys_sem_t; +typedef u8_t sys_mutex_t; +typedef u8_t sys_mbox_t; + +#define sys_sem_new(s, c) ERR_OK +#define sys_sem_signal(s) +#define sys_sem_wait(s) +#define sys_arch_sem_wait(s,t) +#define sys_sem_free(s) +#define sys_sem_valid(s) 0 +#define sys_sem_valid_val(s) 0 +#define sys_sem_set_invalid(s) +#define sys_sem_set_invalid_val(s) +#define sys_mutex_new(mu) ERR_OK +#define sys_mutex_lock(mu) +#define sys_mutex_unlock(mu) +#define sys_mutex_free(mu) +#define sys_mutex_valid(mu) 0 +#define sys_mutex_set_invalid(mu) +#define sys_mbox_new(m, s) ERR_OK +#define sys_mbox_fetch(m,d) +#define sys_mbox_tryfetch(m,d) +#define sys_mbox_post(m,d) +#define sys_mbox_trypost(m,d) +#define sys_mbox_free(m) +#define sys_mbox_valid(m) +#define sys_mbox_valid_val(m) +#define sys_mbox_set_invalid(m) +#define sys_mbox_set_invalid_val(m) + +#define sys_thread_new(n,t,a,s,p) + +#define sys_msleep(t) + +#else /* NO_SYS */ + +/** Return code for timeouts from sys_arch_mbox_fetch and sys_arch_sem_wait */ +#define SYS_ARCH_TIMEOUT 0xffffffffUL + +/** sys_mbox_tryfetch() returns SYS_MBOX_EMPTY if appropriate. + * For now we use the same magic value, but we allow this to change in future. + */ +#define SYS_MBOX_EMPTY SYS_ARCH_TIMEOUT + +#include "lwip/err.h" +#include "arch/sys_arch.h" + +/** Function prototype for thread functions */ +typedef void (*lwip_thread_fn)(void *arg); + +/* Function prototypes for functions to be implemented by platform ports + (in sys_arch.c) */ + +/* Mutex functions: */ + +/** Define LWIP_COMPAT_MUTEX if the port has no mutexes and binary semaphores + should be used instead */ +#ifndef LWIP_COMPAT_MUTEX +#define LWIP_COMPAT_MUTEX 0 +#endif + +#if LWIP_COMPAT_MUTEX +/* for old ports that don't have mutexes: define them to binary semaphores */ +#define sys_mutex_t sys_sem_t +#define sys_mutex_new(mutex) sys_sem_new(mutex, 1) +#define sys_mutex_lock(mutex) sys_sem_wait(mutex) +#define sys_mutex_unlock(mutex) sys_sem_signal(mutex) +#define sys_mutex_free(mutex) sys_sem_free(mutex) +#define sys_mutex_valid(mutex) sys_sem_valid(mutex) +#define sys_mutex_set_invalid(mutex) sys_sem_set_invalid(mutex) + +#else /* LWIP_COMPAT_MUTEX */ + +/** + * @ingroup sys_mutex + * Create a new mutex. + * Note that mutexes are expected to not be taken recursively by the lwIP code, + * so both implementation types (recursive or non-recursive) should work. + * The mutex is allocated to the memory that 'mutex' + * points to (which can be both a pointer or the actual OS structure). + * If the mutex has been created, ERR_OK should be returned. Returning any + * other error will provide a hint what went wrong, but except for assertions, + * no real error handling is implemented. + * + * @param mutex pointer to the mutex to create + * @return ERR_OK if successful, another err_t otherwise + */ +err_t sys_mutex_new(sys_mutex_t *mutex); +/** + * @ingroup sys_mutex + * Blocks the thread until the mutex can be grabbed. + * @param mutex the mutex to lock + */ +void sys_mutex_lock(sys_mutex_t *mutex); +/** + * @ingroup sys_mutex + * Releases the mutex previously locked through 'sys_mutex_lock()'. + * @param mutex the mutex to unlock + */ +void sys_mutex_unlock(sys_mutex_t *mutex); +/** + * @ingroup sys_mutex + * Deallocates a mutex. + * @param mutex the mutex to delete + */ +void sys_mutex_free(sys_mutex_t *mutex); +#ifndef sys_mutex_valid +/** + * @ingroup sys_mutex + * Returns 1 if the mutes is valid, 0 if it is not valid. + * When using pointers, a simple way is to check the pointer for != NULL. + * When directly using OS structures, implementing this may be more complex. + * This may also be a define, in which case the function is not prototyped. + */ +int sys_mutex_valid(sys_mutex_t *mutex); +#endif +#ifndef sys_mutex_set_invalid +/** + * @ingroup sys_mutex + * Invalidate a mutex so that sys_mutex_valid() returns 0. + * ATTENTION: This does NOT mean that the mutex shall be deallocated: + * sys_mutex_free() is always called before calling this function! + * This may also be a define, in which case the function is not prototyped. + */ +void sys_mutex_set_invalid(sys_mutex_t *mutex); +#endif +#endif /* LWIP_COMPAT_MUTEX */ + +/* Semaphore functions: */ + +/** + * @ingroup sys_sem + * Create a new semaphore + * Creates a new semaphore. The semaphore is allocated to the memory that 'sem' + * points to (which can be both a pointer or the actual OS structure). + * The "count" argument specifies the initial state of the semaphore (which is + * either 0 or 1). + * If the semaphore has been created, ERR_OK should be returned. Returning any + * other error will provide a hint what went wrong, but except for assertions, + * no real error handling is implemented. + * + * @param sem pointer to the semaphore to create + * @param count initial count of the semaphore + * @return ERR_OK if successful, another err_t otherwise + */ +err_t sys_sem_new(sys_sem_t *sem, u8_t count); +/** + * @ingroup sys_sem + * Signals a semaphore + * @param sem the semaphore to signal + */ +void sys_sem_signal(sys_sem_t *sem); +/** + * @ingroup sys_sem + * Blocks the thread while waiting for the semaphore to be signaled. If the + * "timeout" argument is non-zero, the thread should only be blocked for the + * specified time (measured in milliseconds). If the "timeout" argument is zero, + * the thread should be blocked until the semaphore is signalled. + * + * The return value is SYS_ARCH_TIMEOUT if the semaphore wasn't signaled within + * the specified time or any other value if it was signaled (with or without + * waiting). + * Notice that lwIP implements a function with a similar name, + * sys_sem_wait(), that uses the sys_arch_sem_wait() function. + * + * @param sem the semaphore to wait for + * @param timeout timeout in milliseconds to wait (0 = wait forever) + * @return SYS_ARCH_TIMEOUT on timeout, any other value on success + */ +u32_t sys_arch_sem_wait(sys_sem_t *sem, u32_t timeout); +/** + * @ingroup sys_sem + * Deallocates a semaphore. + * @param sem semaphore to delete + */ +void sys_sem_free(sys_sem_t *sem); +/** Wait for a semaphore - forever/no timeout */ +#define sys_sem_wait(sem) sys_arch_sem_wait(sem, 0) +#ifndef sys_sem_valid +/** + * @ingroup sys_sem + * Returns 1 if the semaphore is valid, 0 if it is not valid. + * When using pointers, a simple way is to check the pointer for != NULL. + * When directly using OS structures, implementing this may be more complex. + * This may also be a define, in which case the function is not prototyped. + */ +int sys_sem_valid(sys_sem_t *sem); +#endif +#ifndef sys_sem_set_invalid +/** + * @ingroup sys_sem + * Invalidate a semaphore so that sys_sem_valid() returns 0. + * ATTENTION: This does NOT mean that the semaphore shall be deallocated: + * sys_sem_free() is always called before calling this function! + * This may also be a define, in which case the function is not prototyped. + */ +void sys_sem_set_invalid(sys_sem_t *sem); +#endif +#ifndef sys_sem_valid_val +/** + * Same as sys_sem_valid() but taking a value, not a pointer + */ +#define sys_sem_valid_val(sem) sys_sem_valid(&(sem)) +#endif +#ifndef sys_sem_set_invalid_val +/** + * Same as sys_sem_set_invalid() but taking a value, not a pointer + */ +#define sys_sem_set_invalid_val(sem) sys_sem_set_invalid(&(sem)) +#endif + +#ifndef sys_msleep +/** + * @ingroup sys_misc + * Sleep for specified number of ms + */ +void sys_msleep(u32_t ms); /* only has a (close to) 1 ms resolution. */ +#endif + +/* Mailbox functions. */ + +/** + * @ingroup sys_mbox + * Creates an empty mailbox for maximum "size" elements. Elements stored + * in mailboxes are pointers. You have to define macros "_MBOX_SIZE" + * in your lwipopts.h, or ignore this parameter in your implementation + * and use a default size. + * If the mailbox has been created, ERR_OK should be returned. Returning any + * other error will provide a hint what went wrong, but except for assertions, + * no real error handling is implemented. + * + * @param mbox pointer to the mbox to create + * @param size (minimum) number of messages in this mbox + * @return ERR_OK if successful, another err_t otherwise + */ +err_t sys_mbox_new(sys_mbox_t *mbox, int size); +/** + * @ingroup sys_mbox + * Post a message to an mbox - may not fail + * -> blocks if full, only to be used from tasks NOT from ISR! + * + * @param mbox mbox to posts the message + * @param msg message to post (ATTENTION: can be NULL) + */ +void sys_mbox_post(sys_mbox_t *mbox, void *msg); +/** + * @ingroup sys_mbox + * Try to post a message to an mbox - may fail if full. + * Can be used from ISR (if the sys arch layer allows this). + * Returns ERR_MEM if it is full, else, ERR_OK if the "msg" is posted. + * + * @param mbox mbox to posts the message + * @param msg message to post (ATTENTION: can be NULL) + */ +err_t sys_mbox_trypost(sys_mbox_t *mbox, void *msg); +/** + * @ingroup sys_mbox + * Try to post a message to an mbox - may fail if full. + * To be be used from ISR. + * Returns ERR_MEM if it is full, else, ERR_OK if the "msg" is posted. + * + * @param mbox mbox to posts the message + * @param msg message to post (ATTENTION: can be NULL) + */ +err_t sys_mbox_trypost_fromisr(sys_mbox_t *mbox, void *msg); +/** + * @ingroup sys_mbox + * Blocks the thread until a message arrives in the mailbox, but does + * not block the thread longer than "timeout" milliseconds (similar to + * the sys_arch_sem_wait() function). If "timeout" is 0, the thread should + * be blocked until a message arrives. The "msg" argument is a result + * parameter that is set by the function (i.e., by doing "*msg = + * ptr"). The "msg" parameter maybe NULL to indicate that the message + * should be dropped. + * The return values are the same as for the sys_arch_sem_wait() function: + * SYS_ARCH_TIMEOUT if there was a timeout, any other value if a messages + * is received. + * + * Note that a function with a similar name, sys_mbox_fetch(), is + * implemented by lwIP. + * + * @param mbox mbox to get a message from + * @param msg pointer where the message is stored + * @param timeout maximum time (in milliseconds) to wait for a message (0 = wait forever) + * @return SYS_ARCH_TIMEOUT on timeout, any other value if a message has been received + */ +u32_t sys_arch_mbox_fetch(sys_mbox_t *mbox, void **msg, u32_t timeout); +/* Allow port to override with a macro, e.g. special timeout for sys_arch_mbox_fetch() */ +#ifndef sys_arch_mbox_tryfetch +/** + * @ingroup sys_mbox + * This is similar to sys_arch_mbox_fetch, however if a message is not + * present in the mailbox, it immediately returns with the code + * SYS_MBOX_EMPTY. On success 0 is returned. + * To allow for efficient implementations, this can be defined as a + * function-like macro in sys_arch.h instead of a normal function. For + * example, a naive implementation could be: + * \#define sys_arch_mbox_tryfetch(mbox,msg) sys_arch_mbox_fetch(mbox,msg,1) + * although this would introduce unnecessary delays. + * + * @param mbox mbox to get a message from + * @param msg pointer where the message is stored + * @return 0 (milliseconds) if a message has been received + * or SYS_MBOX_EMPTY if the mailbox is empty + */ +u32_t sys_arch_mbox_tryfetch(sys_mbox_t *mbox, void **msg); +#endif +/** + * For now, we map straight to sys_arch implementation. + */ +#define sys_mbox_tryfetch(mbox, msg) sys_arch_mbox_tryfetch(mbox, msg) +/** + * @ingroup sys_mbox + * Deallocates a mailbox. If there are messages still present in the + * mailbox when the mailbox is deallocated, it is an indication of a + * programming error in lwIP and the developer should be notified. + * + * @param mbox mbox to delete + */ +void sys_mbox_free(sys_mbox_t *mbox); +#define sys_mbox_fetch(mbox, msg) sys_arch_mbox_fetch(mbox, msg, 0) +#ifndef sys_mbox_valid +/** + * @ingroup sys_mbox + * Returns 1 if the mailbox is valid, 0 if it is not valid. + * When using pointers, a simple way is to check the pointer for != NULL. + * When directly using OS structures, implementing this may be more complex. + * This may also be a define, in which case the function is not prototyped. + */ +int sys_mbox_valid(sys_mbox_t *mbox); +#endif +#ifndef sys_mbox_set_invalid +/** + * @ingroup sys_mbox + * Invalidate a mailbox so that sys_mbox_valid() returns 0. + * ATTENTION: This does NOT mean that the mailbox shall be deallocated: + * sys_mbox_free() is always called before calling this function! + * This may also be a define, in which case the function is not prototyped. + */ +void sys_mbox_set_invalid(sys_mbox_t *mbox); +#endif +#ifndef sys_mbox_valid_val +/** + * Same as sys_mbox_valid() but taking a value, not a pointer + */ +#define sys_mbox_valid_val(mbox) sys_mbox_valid(&(mbox)) +#endif +#ifndef sys_mbox_set_invalid_val +/** + * Same as sys_mbox_set_invalid() but taking a value, not a pointer + */ +#define sys_mbox_set_invalid_val(mbox) sys_mbox_set_invalid(&(mbox)) +#endif + + +/** + * @ingroup sys_misc + * The only thread function: + * Starts a new thread named "name" with priority "prio" that will begin its + * execution in the function "thread()". The "arg" argument will be passed as an + * argument to the thread() function. The stack size to used for this thread is + * the "stacksize" parameter. The id of the new thread is returned. Both the id + * and the priority are system dependent. + * ATTENTION: although this function returns a value, it MUST NOT FAIL (ports have to assert this!) + * + * @param name human-readable name for the thread (used for debugging purposes) + * @param thread thread-function + * @param arg parameter passed to 'thread' + * @param stacksize stack size in bytes for the new thread (may be ignored by ports) + * @param prio priority of the new thread (may be ignored by ports) */ +sys_thread_t sys_thread_new(const char *name, lwip_thread_fn thread, void *arg, int stacksize, int prio); + +#endif /* NO_SYS */ + +/** + * @ingroup sys_misc + * sys_init() must be called before anything else. + * Initialize the sys_arch layer. + */ +void sys_init(void); + +#ifndef sys_jiffies +/** + * Ticks/jiffies since power up. + */ +u32_t sys_jiffies(void); +#endif + +/** + * @ingroup sys_time + * Returns the current time in milliseconds, + * may be the same as sys_jiffies or at least based on it. + * Don't care for wraparound, this is only used for time diffs. + * Not implementing this function means you cannot use some modules (e.g. TCP + * timestamps, internal timeouts for NO_SYS==1). + */ +u32_t sys_now(void); + +/* Critical Region Protection */ +/* These functions must be implemented in the sys_arch.c file. + In some implementations they can provide a more light-weight protection + mechanism than using semaphores. Otherwise semaphores can be used for + implementation */ +#ifndef SYS_ARCH_PROTECT +/** SYS_LIGHTWEIGHT_PROT + * define SYS_LIGHTWEIGHT_PROT in lwipopts.h if you want inter-task protection + * for certain critical regions during buffer allocation, deallocation and memory + * allocation and deallocation. + */ +#if SYS_LIGHTWEIGHT_PROT + +/** + * @ingroup sys_prot + * SYS_ARCH_DECL_PROTECT + * declare a protection variable. This macro will default to defining a variable of + * type sys_prot_t. If a particular port needs a different implementation, then + * this macro may be defined in sys_arch.h. + */ +#define SYS_ARCH_DECL_PROTECT(lev) sys_prot_t lev +/** + * @ingroup sys_prot + * SYS_ARCH_PROTECT + * Perform a "fast" protect. This could be implemented by + * disabling interrupts for an embedded system or by using a semaphore or + * mutex. The implementation should allow calling SYS_ARCH_PROTECT when + * already protected. The old protection level is returned in the variable + * "lev". This macro will default to calling the sys_arch_protect() function + * which should be implemented in sys_arch.c. If a particular port needs a + * different implementation, then this macro may be defined in sys_arch.h + */ +#define SYS_ARCH_PROTECT(lev) lev = sys_arch_protect() +/** + * @ingroup sys_prot + * SYS_ARCH_UNPROTECT + * Perform a "fast" set of the protection level to "lev". This could be + * implemented by setting the interrupt level to "lev" within the MACRO or by + * using a semaphore or mutex. This macro will default to calling the + * sys_arch_unprotect() function which should be implemented in + * sys_arch.c. If a particular port needs a different implementation, then + * this macro may be defined in sys_arch.h + */ +#define SYS_ARCH_UNPROTECT(lev) sys_arch_unprotect(lev) +sys_prot_t sys_arch_protect(void); +void sys_arch_unprotect(sys_prot_t pval); + +#else + +#define SYS_ARCH_DECL_PROTECT(lev) +#define SYS_ARCH_PROTECT(lev) +#define SYS_ARCH_UNPROTECT(lev) + +#endif /* SYS_LIGHTWEIGHT_PROT */ + +#endif /* SYS_ARCH_PROTECT */ + +/* + * Macros to set/get and increase/decrease variables in a thread-safe way. + * Use these for accessing variable that are used from more than one thread. + */ + +#ifndef SYS_ARCH_INC +#define SYS_ARCH_INC(var, val) do { \ + SYS_ARCH_DECL_PROTECT(old_level); \ + SYS_ARCH_PROTECT(old_level); \ + var += val; \ + SYS_ARCH_UNPROTECT(old_level); \ + } while(0) +#endif /* SYS_ARCH_INC */ + +#ifndef SYS_ARCH_DEC +#define SYS_ARCH_DEC(var, val) do { \ + SYS_ARCH_DECL_PROTECT(old_level); \ + SYS_ARCH_PROTECT(old_level); \ + var -= val; \ + SYS_ARCH_UNPROTECT(old_level); \ + } while(0) +#endif /* SYS_ARCH_DEC */ + +#ifndef SYS_ARCH_GET +#define SYS_ARCH_GET(var, ret) do { \ + SYS_ARCH_DECL_PROTECT(old_level); \ + SYS_ARCH_PROTECT(old_level); \ + ret = var; \ + SYS_ARCH_UNPROTECT(old_level); \ + } while(0) +#endif /* SYS_ARCH_GET */ + +#ifndef SYS_ARCH_SET +#define SYS_ARCH_SET(var, val) do { \ + SYS_ARCH_DECL_PROTECT(old_level); \ + SYS_ARCH_PROTECT(old_level); \ + var = val; \ + SYS_ARCH_UNPROTECT(old_level); \ + } while(0) +#endif /* SYS_ARCH_SET */ + +#ifndef SYS_ARCH_LOCKED +#define SYS_ARCH_LOCKED(code) do { \ + SYS_ARCH_DECL_PROTECT(old_level); \ + SYS_ARCH_PROTECT(old_level); \ + code; \ + SYS_ARCH_UNPROTECT(old_level); \ + } while(0) +#endif /* SYS_ARCH_LOCKED */ + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_SYS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/tcp.h b/Other/tun2socks/core/c/include/lwip/tcp.h new file mode 100644 index 0000000..b726de8 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/tcp.h @@ -0,0 +1,502 @@ +/** + * @file + * TCP API (to be used from TCPIP thread)\n + * See also @ref tcp_raw + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_TCP_H +#define LWIP_HDR_TCP_H + +#include "lwip/opt.h" + +#if LWIP_TCP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/tcpbase.h" +#include "lwip/mem.h" +#include "lwip/pbuf.h" +#include "lwip/ip.h" +#include "lwip/icmp.h" +#include "lwip/err.h" +#include "lwip/ip6.h" +#include "lwip/ip6_addr.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct tcp_pcb; +struct tcp_pcb_listen; + +/** Function prototype for tcp accept callback functions. Called when a new + * connection can be accepted on a listening pcb. + * + * @param arg Additional argument to pass to the callback function (@see tcp_arg()) + * @param newpcb The new connection pcb + * @param err An error code if there has been an error accepting. + * Only return ERR_ABRT if you have called tcp_abort from within the + * callback function! + */ +typedef err_t (*tcp_accept_fn)(void *arg, struct tcp_pcb *newpcb, err_t err); + +/** Function prototype for tcp receive callback functions. Called when data has + * been received. + * + * @param arg Additional argument to pass to the callback function (@see tcp_arg()) + * @param tpcb The connection pcb which received data + * @param p The received data (or NULL when the connection has been closed!) + * @param err An error code if there has been an error receiving + * Only return ERR_ABRT if you have called tcp_abort from within the + * callback function! + */ +typedef err_t (*tcp_recv_fn)(void *arg, struct tcp_pcb *tpcb, + struct pbuf *p, err_t err); + +/** Function prototype for tcp sent callback functions. Called when sent data has + * been acknowledged by the remote side. Use it to free corresponding resources. + * This also means that the pcb has now space available to send new data. + * + * @param arg Additional argument to pass to the callback function (@see tcp_arg()) + * @param tpcb The connection pcb for which data has been acknowledged + * @param len The amount of bytes acknowledged + * @return ERR_OK: try to send some data by calling tcp_output + * Only return ERR_ABRT if you have called tcp_abort from within the + * callback function! + */ +typedef err_t (*tcp_sent_fn)(void *arg, struct tcp_pcb *tpcb, + u16_t len); + +/** Function prototype for tcp poll callback functions. Called periodically as + * specified by @see tcp_poll. + * + * @param arg Additional argument to pass to the callback function (@see tcp_arg()) + * @param tpcb tcp pcb + * @return ERR_OK: try to send some data by calling tcp_output + * Only return ERR_ABRT if you have called tcp_abort from within the + * callback function! + */ +typedef err_t (*tcp_poll_fn)(void *arg, struct tcp_pcb *tpcb); + +/** Function prototype for tcp error callback functions. Called when the pcb + * receives a RST or is unexpectedly closed for any other reason. + * + * @note The corresponding pcb is already freed when this callback is called! + * + * @param arg Additional argument to pass to the callback function (@see tcp_arg()) + * @param err Error code to indicate why the pcb has been closed + * ERR_ABRT: aborted through tcp_abort or by a TCP timer + * ERR_RST: the connection was reset by the remote host + */ +typedef void (*tcp_err_fn)(void *arg, err_t err); + +/** Function prototype for tcp connected callback functions. Called when a pcb + * is connected to the remote side after initiating a connection attempt by + * calling tcp_connect(). + * + * @param arg Additional argument to pass to the callback function (@see tcp_arg()) + * @param tpcb The connection pcb which is connected + * @param err An unused error code, always ERR_OK currently ;-) @todo! + * Only return ERR_ABRT if you have called tcp_abort from within the + * callback function! + * + * @note When a connection attempt fails, the error callback is currently called! + */ +typedef err_t (*tcp_connected_fn)(void *arg, struct tcp_pcb *tpcb, err_t err); + +#if LWIP_WND_SCALE +#define RCV_WND_SCALE(pcb, wnd) (((wnd) >> (pcb)->rcv_scale)) +#define SND_WND_SCALE(pcb, wnd) (((wnd) << (pcb)->snd_scale)) +#define TCPWND16(x) ((u16_t)LWIP_MIN((x), 0xFFFF)) +#define TCP_WND_MAX(pcb) ((tcpwnd_size_t)(((pcb)->flags & TF_WND_SCALE) ? TCP_WND : TCPWND16(TCP_WND))) +#else +#define RCV_WND_SCALE(pcb, wnd) (wnd) +#define SND_WND_SCALE(pcb, wnd) (wnd) +#define TCPWND16(x) (x) +#define TCP_WND_MAX(pcb) TCP_WND +#endif +/* Increments a tcpwnd_size_t and holds at max value rather than rollover */ +#define TCP_WND_INC(wnd, inc) do { \ + if ((tcpwnd_size_t)(wnd + inc) >= wnd) { \ + wnd = (tcpwnd_size_t)(wnd + inc); \ + } else { \ + wnd = (tcpwnd_size_t)-1; \ + } \ + } while(0) + +#if LWIP_TCP_SACK_OUT +/** SACK ranges to include in ACK packets. + * SACK entry is invalid if left==right. */ +struct tcp_sack_range { + /** Left edge of the SACK: the first acknowledged sequence number. */ + u32_t left; + /** Right edge of the SACK: the last acknowledged sequence number +1 (so first NOT acknowledged). */ + u32_t right; +}; +#endif /* LWIP_TCP_SACK_OUT */ + +/** Function prototype for deallocation of arguments. Called *just before* the + * pcb is freed, so don't expect to be able to do anything with this pcb! + * + * @param id ext arg id (allocated via @ref tcp_ext_arg_alloc_id) + * @param data pointer to the data (set via @ref tcp_ext_arg_set before) + */ +typedef void (*tcp_extarg_callback_pcb_destroyed_fn)(u8_t id, void *data); + +/** Function prototype to transition arguments from a listening pcb to an accepted pcb + * + * @param id ext arg id (allocated via @ref tcp_ext_arg_alloc_id) + * @param lpcb the listening pcb accepting a connection + * @param cpcb the newly allocated connection pcb + * @return ERR_OK if OK, any error if connection should be dropped + */ +typedef err_t (*tcp_extarg_callback_passive_open_fn)(u8_t id, struct tcp_pcb_listen *lpcb, struct tcp_pcb *cpcb); + +/** A table of callback functions that is invoked for ext arguments */ +struct tcp_ext_arg_callbacks { + /** @ref tcp_extarg_callback_pcb_destroyed_fn */ + tcp_extarg_callback_pcb_destroyed_fn destroy; + /** @ref tcp_extarg_callback_passive_open_fn */ + tcp_extarg_callback_passive_open_fn passive_open; +}; + +#define LWIP_TCP_PCB_NUM_EXT_ARG_ID_INVALID 0xFF + +#if LWIP_TCP_PCB_NUM_EXT_ARGS +/* This is the structure for ext args in tcp pcbs (used as array) */ +struct tcp_pcb_ext_args { + const struct tcp_ext_arg_callbacks *callbacks; + void *data; +}; +/* This is a helper define to prevent zero size arrays if disabled */ +#define TCP_PCB_EXTARGS struct tcp_pcb_ext_args ext_args[LWIP_TCP_PCB_NUM_EXT_ARGS]; +#else +#define TCP_PCB_EXTARGS +#endif + +typedef u16_t tcpflags_t; +#define TCP_ALLFLAGS 0xffffU + +/** + * members common to struct tcp_pcb and struct tcp_listen_pcb + */ +#define TCP_PCB_COMMON(type) \ + type *next; /* for the linked list */ \ + void *callback_arg; \ + TCP_PCB_EXTARGS \ + enum tcp_state state; /* TCP state */ \ + u8_t prio; \ + /* ports are in host byte order */ \ + u16_t local_port + + +/** the TCP protocol control block for listening pcbs */ +struct tcp_pcb_listen { +/** Common members of all PCB types */ + IP_PCB; +/** Protocol specific PCB members */ + TCP_PCB_COMMON(struct tcp_pcb_listen); + +#if LWIP_CALLBACK_API + /* Function to call when a listener has been connected. */ + tcp_accept_fn accept; +#endif /* LWIP_CALLBACK_API */ + +#if TCP_LISTEN_BACKLOG + u8_t backlog; + u8_t accepts_pending; +#endif /* TCP_LISTEN_BACKLOG */ +}; + + +/** the TCP protocol control block */ +struct tcp_pcb { +/** common PCB members */ + IP_PCB; +/** protocol specific PCB members */ + TCP_PCB_COMMON(struct tcp_pcb); + + /* ports are in host byte order */ + u16_t remote_port; + + tcpflags_t flags; +#define TF_ACK_DELAY 0x01U /* Delayed ACK. */ +#define TF_ACK_NOW 0x02U /* Immediate ACK. */ +#define TF_INFR 0x04U /* In fast recovery. */ +#define TF_CLOSEPEND 0x08U /* If this is set, tcp_close failed to enqueue the FIN (retried in tcp_tmr) */ +#define TF_RXCLOSED 0x10U /* rx closed by tcp_shutdown */ +#define TF_FIN 0x20U /* Connection was closed locally (FIN segment enqueued). */ +#define TF_NODELAY 0x40U /* Disable Nagle algorithm */ +#define TF_NAGLEMEMERR 0x80U /* nagle enabled, memerr, try to output to prevent delayed ACK to happen */ +#if LWIP_WND_SCALE +#define TF_WND_SCALE 0x0100U /* Window Scale option enabled */ +#endif +#if TCP_LISTEN_BACKLOG +#define TF_BACKLOGPEND 0x0200U /* If this is set, a connection pcb has increased the backlog on its listener */ +#endif +#if LWIP_TCP_TIMESTAMPS +#define TF_TIMESTAMP 0x0400U /* Timestamp option enabled */ +#endif +#define TF_RTO 0x0800U /* RTO timer has fired, in-flight data moved to unsent and being retransmitted */ +#if LWIP_TCP_SACK_OUT +#define TF_SACK 0x1000U /* Selective ACKs enabled */ +#endif + + /* the rest of the fields are in host byte order + as we have to do some math with them */ + + /* Timers */ + u8_t polltmr, pollinterval; + u8_t last_timer; + u32_t tmr; + + /* receiver variables */ + u32_t rcv_nxt; /* next seqno expected */ + tcpwnd_size_t rcv_wnd; /* receiver window available */ + tcpwnd_size_t rcv_ann_wnd; /* receiver window to announce */ + u32_t rcv_ann_right_edge; /* announced right edge of window */ + +#if LWIP_TCP_SACK_OUT + /* SACK ranges to include in ACK packets (entry is invalid if left==right) */ + struct tcp_sack_range rcv_sacks[LWIP_TCP_MAX_SACK_NUM]; +#define LWIP_TCP_SACK_VALID(pcb, idx) ((pcb)->rcv_sacks[idx].left != (pcb)->rcv_sacks[idx].right) +#endif /* LWIP_TCP_SACK_OUT */ + + /* Retransmission timer. */ + s16_t rtime; + + u16_t mss; /* maximum segment size */ + + /* RTT (round trip time) estimation variables */ + u32_t rttest; /* RTT estimate in 500ms ticks */ + u32_t rtseq; /* sequence number being timed */ + s16_t sa, sv; /* @see "Congestion Avoidance and Control" by Van Jacobson and Karels */ + + s16_t rto; /* retransmission time-out (in ticks of TCP_SLOW_INTERVAL) */ + u8_t nrtx; /* number of retransmissions */ + + /* fast retransmit/recovery */ + u8_t dupacks; + u32_t lastack; /* Highest acknowledged seqno. */ + + /* congestion avoidance/control variables */ + tcpwnd_size_t cwnd; + tcpwnd_size_t ssthresh; + + /* first byte following last rto byte */ + u32_t rto_end; + + /* sender variables */ + u32_t snd_nxt; /* next new seqno to be sent */ + u32_t snd_wl1, snd_wl2; /* Sequence and acknowledgement numbers of last + window update. */ + u32_t snd_lbb; /* Sequence number of next byte to be buffered. */ + tcpwnd_size_t snd_wnd; /* sender window */ + tcpwnd_size_t snd_wnd_max; /* the maximum sender window announced by the remote host */ + + tcpwnd_size_t snd_buf; /* Available buffer space for sending (in bytes). */ +#define TCP_SNDQUEUELEN_OVERFLOW (0xffffU-3) + u16_t snd_queuelen; /* Number of pbufs currently in the send buffer. */ + +#if TCP_OVERSIZE + /* Extra bytes available at the end of the last pbuf in unsent. */ + u16_t unsent_oversize; +#endif /* TCP_OVERSIZE */ + + tcpwnd_size_t bytes_acked; + + /* These are ordered by sequence number: */ + struct tcp_seg *unsent; /* Unsent (queued) segments. */ + struct tcp_seg *unacked; /* Sent but unacknowledged segments. */ +#if TCP_QUEUE_OOSEQ + struct tcp_seg *ooseq; /* Received out of sequence segments. */ +#endif /* TCP_QUEUE_OOSEQ */ + + struct pbuf *refused_data; /* Data previously received but not yet taken by upper layer */ + +#if LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG + struct tcp_pcb_listen* listener; +#endif /* LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG */ + +#if LWIP_CALLBACK_API + /* Function to be called when more send buffer space is available. */ + tcp_sent_fn sent; + /* Function to be called when (in-sequence) data has arrived. */ + tcp_recv_fn recv; + /* Function to be called when a connection has been set up. */ + tcp_connected_fn connected; + /* Function which is called periodically. */ + tcp_poll_fn poll; + /* Function to be called whenever a fatal error occurs. */ + tcp_err_fn errf; +#endif /* LWIP_CALLBACK_API */ + +#if LWIP_TCP_TIMESTAMPS + u32_t ts_lastacksent; + u32_t ts_recent; +#endif /* LWIP_TCP_TIMESTAMPS */ + + /* idle time before KEEPALIVE is sent */ + u32_t keep_idle; +#if LWIP_TCP_KEEPALIVE + u32_t keep_intvl; + u32_t keep_cnt; +#endif /* LWIP_TCP_KEEPALIVE */ + + /* Persist timer counter */ + u8_t persist_cnt; + /* Persist timer back-off */ + u8_t persist_backoff; + /* Number of persist probes */ + u8_t persist_probe; + + /* KEEPALIVE counter */ + u8_t keep_cnt_sent; + +#if LWIP_WND_SCALE + u8_t snd_scale; + u8_t rcv_scale; +#endif +}; + +#if LWIP_EVENT_API + +enum lwip_event { + LWIP_EVENT_ACCEPT, + LWIP_EVENT_SENT, + LWIP_EVENT_RECV, + LWIP_EVENT_CONNECTED, + LWIP_EVENT_POLL, + LWIP_EVENT_ERR +}; + +err_t lwip_tcp_event(void *arg, struct tcp_pcb *pcb, + enum lwip_event, + struct pbuf *p, + u16_t size, + err_t err); + +#endif /* LWIP_EVENT_API */ + +/* Application program's interface: */ +struct tcp_pcb * tcp_new (void); +struct tcp_pcb * tcp_new_ip_type (u8_t type); + +void tcp_arg (struct tcp_pcb *pcb, void *arg); +#if LWIP_CALLBACK_API +void tcp_recv (struct tcp_pcb *pcb, tcp_recv_fn recv); +void tcp_sent (struct tcp_pcb *pcb, tcp_sent_fn sent); +void tcp_err (struct tcp_pcb *pcb, tcp_err_fn err); +void tcp_accept (struct tcp_pcb *pcb, tcp_accept_fn accept); +#endif /* LWIP_CALLBACK_API */ +void tcp_poll (struct tcp_pcb *pcb, tcp_poll_fn poll, u8_t interval); + +#define tcp_set_flags(pcb, set_flags) do { (pcb)->flags = (tcpflags_t)((pcb)->flags | (set_flags)); } while(0) +#define tcp_clear_flags(pcb, clr_flags) do { (pcb)->flags = (tcpflags_t)((pcb)->flags & (tcpflags_t)(~(clr_flags) & TCP_ALLFLAGS)); } while(0) +#define tcp_is_flag_set(pcb, flag) (((pcb)->flags & (flag)) != 0) + +#if LWIP_TCP_TIMESTAMPS +#define tcp_mss(pcb) (((pcb)->flags & TF_TIMESTAMP) ? ((pcb)->mss - 12) : (pcb)->mss) +#else /* LWIP_TCP_TIMESTAMPS */ +/** @ingroup tcp_raw */ +#define tcp_mss(pcb) ((pcb)->mss) +#endif /* LWIP_TCP_TIMESTAMPS */ +/** @ingroup tcp_raw */ +#define tcp_sndbuf(pcb) (TCPWND16((pcb)->snd_buf)) +/** @ingroup tcp_raw */ +#define tcp_sndqueuelen(pcb) ((pcb)->snd_queuelen) +/** @ingroup tcp_raw */ +#define tcp_nagle_disable(pcb) tcp_set_flags(pcb, TF_NODELAY) +/** @ingroup tcp_raw */ +#define tcp_nagle_enable(pcb) tcp_clear_flags(pcb, TF_NODELAY) +/** @ingroup tcp_raw */ +#define tcp_nagle_disabled(pcb) tcp_is_flag_set(pcb, TF_NODELAY) + +#if TCP_LISTEN_BACKLOG +#define tcp_backlog_set(pcb, new_backlog) do { \ + LWIP_ASSERT("pcb->state == LISTEN (called for wrong pcb?)", (pcb)->state == LISTEN); \ + ((struct tcp_pcb_listen *)(pcb))->backlog = ((new_backlog) ? (new_backlog) : 1); } while(0) +void tcp_backlog_delayed(struct tcp_pcb* pcb); +void tcp_backlog_accepted(struct tcp_pcb* pcb); +#else /* TCP_LISTEN_BACKLOG */ +#define tcp_backlog_set(pcb, new_backlog) +#define tcp_backlog_delayed(pcb) +#define tcp_backlog_accepted(pcb) +#endif /* TCP_LISTEN_BACKLOG */ +#define tcp_accepted(pcb) do { LWIP_UNUSED_ARG(pcb); } while(0) /* compatibility define, not needed any more */ + +void tcp_recved (struct tcp_pcb *pcb, u16_t len); +err_t tcp_bind (struct tcp_pcb *pcb, const ip_addr_t *ipaddr, + u16_t port); +void tcp_bind_netif(struct tcp_pcb *pcb, const struct netif *netif); +err_t tcp_connect (struct tcp_pcb *pcb, const ip_addr_t *ipaddr, + u16_t port, tcp_connected_fn connected); + +struct tcp_pcb * tcp_listen_with_backlog_and_err(struct tcp_pcb *pcb, u8_t backlog, err_t *err); +struct tcp_pcb * tcp_listen_with_backlog(struct tcp_pcb *pcb, u8_t backlog); +/** @ingroup tcp_raw */ +#define tcp_listen(pcb) tcp_listen_with_backlog(pcb, TCP_DEFAULT_LISTEN_BACKLOG) + +void tcp_abort (struct tcp_pcb *pcb); +err_t tcp_close (struct tcp_pcb *pcb); +err_t tcp_shutdown(struct tcp_pcb *pcb, int shut_rx, int shut_tx); + +err_t tcp_write (struct tcp_pcb *pcb, const void *dataptr, u16_t len, + u8_t apiflags); + +void tcp_setprio (struct tcp_pcb *pcb, u8_t prio); + +err_t tcp_output (struct tcp_pcb *pcb); + +err_t tcp_tcp_get_tcp_addrinfo(struct tcp_pcb *pcb, int local, ip_addr_t *addr, u16_t *port); + +err_t tcp_process_refused_data(struct tcp_pcb *pcb); + +#define tcp_dbg_get_tcp_state(pcb) ((pcb)->state) + +/* for compatibility with older implementation */ +#define tcp_new_ip6() tcp_new_ip_type(IPADDR_TYPE_V6) + +#if LWIP_TCP_PCB_NUM_EXT_ARGS +u8_t tcp_ext_arg_alloc_id(void); +void tcp_ext_arg_set_callbacks(struct tcp_pcb *pcb, uint8_t id, const struct tcp_ext_arg_callbacks * const callbacks); +void tcp_ext_arg_set(struct tcp_pcb *pcb, uint8_t id, void *arg); +void *tcp_ext_arg_get(const struct tcp_pcb *pcb, uint8_t id); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_TCP */ + +#endif /* LWIP_HDR_TCP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/tcpbase.h b/Other/tun2socks/core/c/include/lwip/tcpbase.h new file mode 100644 index 0000000..0023074 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/tcpbase.h @@ -0,0 +1,88 @@ +/** + * @file + * Base TCP API definitions shared by TCP and ALTCP\n + * See also @ref tcp_raw + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_TCPBASE_H +#define LWIP_HDR_TCPBASE_H + +#include "lwip/opt.h" + +#if LWIP_TCP /* don't build if not configured for use in lwipopts.h */ + +#ifdef __cplusplus +extern "C" { +#endif + + +#if LWIP_WND_SCALE +typedef u32_t tcpwnd_size_t; +#else +typedef u16_t tcpwnd_size_t; +#endif + +enum tcp_state { + CLOSED = 0, + LISTEN = 1, + SYN_SENT = 2, + SYN_RCVD = 3, + ESTABLISHED = 4, + FIN_WAIT_1 = 5, + FIN_WAIT_2 = 6, + CLOSE_WAIT = 7, + CLOSING = 8, + LAST_ACK = 9, + TIME_WAIT = 10 +}; +/* ATTENTION: this depends on state number ordering! */ +#define TCP_STATE_IS_CLOSING(state) ((state) >= FIN_WAIT_1) + +/* Flags for "apiflags" parameter in tcp_write */ +#define TCP_WRITE_FLAG_COPY 0x01 +#define TCP_WRITE_FLAG_MORE 0x02 + +#define TCP_PRIO_MIN 1 +#define TCP_PRIO_NORMAL 64 +#define TCP_PRIO_MAX 127 + +const char* tcp_debug_state_str(enum tcp_state s); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_TCP */ + +#endif /* LWIP_HDR_TCPBASE_H */ diff --git a/Other/tun2socks/core/c/include/lwip/tcpip.h b/Other/tun2socks/core/c/include/lwip/tcpip.h new file mode 100644 index 0000000..0b8880a --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/tcpip.h @@ -0,0 +1,113 @@ +/** + * @file + * Functions to sync with TCPIP thread + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_TCPIP_H +#define LWIP_HDR_TCPIP_H + +#include "lwip/opt.h" + +#if !NO_SYS /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/err.h" +#include "lwip/timeouts.h" +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_TCPIP_CORE_LOCKING +/** The global semaphore to lock the stack. */ +extern sys_mutex_t lock_tcpip_core; +#if !defined LOCK_TCPIP_CORE || defined __DOXYGEN__ +/** Lock lwIP core mutex (needs @ref LWIP_TCPIP_CORE_LOCKING 1) */ +#define LOCK_TCPIP_CORE() sys_mutex_lock(&lock_tcpip_core) +/** Unlock lwIP core mutex (needs @ref LWIP_TCPIP_CORE_LOCKING 1) */ +#define UNLOCK_TCPIP_CORE() sys_mutex_unlock(&lock_tcpip_core) +#endif /* LOCK_TCPIP_CORE */ +#else /* LWIP_TCPIP_CORE_LOCKING */ +#define LOCK_TCPIP_CORE() +#define UNLOCK_TCPIP_CORE() +#endif /* LWIP_TCPIP_CORE_LOCKING */ + +struct pbuf; +struct netif; + +/** Function prototype for the init_done function passed to tcpip_init */ +typedef void (*tcpip_init_done_fn)(void *arg); +/** Function prototype for functions passed to tcpip_callback() */ +typedef void (*tcpip_callback_fn)(void *ctx); + +/* Forward declarations */ +struct tcpip_callback_msg; + +void tcpip_init(tcpip_init_done_fn tcpip_init_done, void *arg); + +err_t tcpip_inpkt(struct pbuf *p, struct netif *inp, netif_input_fn input_fn); +err_t tcpip_input(struct pbuf *p, struct netif *inp); + +err_t tcpip_try_callback(tcpip_callback_fn function, void *ctx); +err_t tcpip_callback(tcpip_callback_fn function, void *ctx); +/** @ingroup lwip_os + * @deprecated use tcpip_try_callback() or tcpip_callback() instead + */ +#define tcpip_callback_with_block(function, ctx, block) ((block != 0)? tcpip_callback(function, ctx) : tcpip_try_callback(function, ctx)) + +struct tcpip_callback_msg* tcpip_callbackmsg_new(tcpip_callback_fn function, void *ctx); +void tcpip_callbackmsg_delete(struct tcpip_callback_msg* msg); +err_t tcpip_callbackmsg_trycallback(struct tcpip_callback_msg* msg); +err_t tcpip_callbackmsg_trycallback_fromisr(struct tcpip_callback_msg* msg); + +/* free pbufs or heap memory from another context without blocking */ +err_t pbuf_free_callback(struct pbuf *p); +err_t mem_free_callback(void *m); + +#if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS +err_t tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg); +err_t tcpip_untimeout(sys_timeout_handler h, void *arg); +#endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */ + +#ifdef TCPIP_THREAD_TEST +int tcpip_thread_poll_one(void); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* !NO_SYS */ + +#endif /* LWIP_HDR_TCPIP_H */ diff --git a/Other/tun2socks/core/c/include/lwip/timeouts.h b/Other/tun2socks/core/c/include/lwip/timeouts.h new file mode 100644 index 0000000..b601f9e --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/timeouts.h @@ -0,0 +1,128 @@ +/** + * @file + * Timer implementations + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_TIMEOUTS_H +#define LWIP_HDR_TIMEOUTS_H + +#include "lwip/opt.h" +#include "lwip/err.h" +#if !NO_SYS +#include "lwip/sys.h" +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef LWIP_DEBUG_TIMERNAMES +#ifdef LWIP_DEBUG +#define LWIP_DEBUG_TIMERNAMES SYS_DEBUG +#else /* LWIP_DEBUG */ +#define LWIP_DEBUG_TIMERNAMES 0 +#endif /* LWIP_DEBUG*/ +#endif + +/** Returned by sys_timeouts_sleeptime() to indicate there is no timer, so we + * can sleep forever. + */ +#define SYS_TIMEOUTS_SLEEPTIME_INFINITE 0xFFFFFFFF + +/** Function prototype for a stack-internal timer function that has to be + * called at a defined interval */ +typedef void (* lwip_cyclic_timer_handler)(void); + +/** This struct contains information about a stack-internal timer function + that has to be called at a defined interval */ +struct lwip_cyclic_timer { + u32_t interval_ms; + lwip_cyclic_timer_handler handler; +#if LWIP_DEBUG_TIMERNAMES + const char* handler_name; +#endif /* LWIP_DEBUG_TIMERNAMES */ +}; + +/** This array contains all stack-internal cyclic timers. To get the number of + * timers, use lwip_num_cyclic_timers */ +extern const struct lwip_cyclic_timer lwip_cyclic_timers[]; +/** Array size of lwip_cyclic_timers[] */ +extern const int lwip_num_cyclic_timers; + +#if LWIP_TIMERS + +/** Function prototype for a timeout callback function. Register such a function + * using sys_timeout(). + * + * @param arg Additional argument to pass to the function - set up by sys_timeout() + */ +typedef void (* sys_timeout_handler)(void *arg); + +struct sys_timeo { + struct sys_timeo *next; + u32_t time; + sys_timeout_handler h; + void *arg; +#if LWIP_DEBUG_TIMERNAMES + const char* handler_name; +#endif /* LWIP_DEBUG_TIMERNAMES */ +}; + +void sys_timeouts_init(void); + +#if LWIP_DEBUG_TIMERNAMES +void sys_timeout_debug(u32_t msecs, sys_timeout_handler handler, void *arg, const char* handler_name); +#define sys_timeout(msecs, handler, arg) sys_timeout_debug(msecs, handler, arg, #handler) +#else /* LWIP_DEBUG_TIMERNAMES */ +void sys_timeout(u32_t msecs, sys_timeout_handler handler, void *arg); +#endif /* LWIP_DEBUG_TIMERNAMES */ + +void sys_untimeout(sys_timeout_handler handler, void *arg); +void sys_restart_timeouts(void); +void sys_check_timeouts(void); +u32_t sys_timeouts_sleeptime(void); + +#if LWIP_TESTMODE +struct sys_timeo** sys_timeouts_get_next_timeout(void); +void lwip_cyclic_timer(void *arg); +#endif + +#endif /* LWIP_TIMERS */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_TIMEOUTS_H */ diff --git a/Other/tun2socks/core/c/include/lwip/udp.h b/Other/tun2socks/core/c/include/lwip/udp.h new file mode 100644 index 0000000..5f50394 --- /dev/null +++ b/Other/tun2socks/core/c/include/lwip/udp.h @@ -0,0 +1,232 @@ +/** + * @file + * UDP API (to be used from TCPIP thread)\n + * See also @ref udp_raw + */ + +/* + * Copyright (c) 2001-2004 Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_UDP_H +#define LWIP_HDR_UDP_H + +#include "lwip/opt.h" + +#if LWIP_UDP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/pbuf.h" +#include "lwip/netif.h" +#include "lwip/ip_addr.h" +#include "lwip/ip.h" +#include "lwip/ip6_addr.h" +#include "lwip/prot/udp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define UDP_FLAGS_NOCHKSUM 0x01U +#define UDP_FLAGS_UDPLITE 0x02U +#define UDP_FLAGS_CONNECTED 0x04U +#define UDP_FLAGS_MULTICAST_LOOP 0x08U + +struct udp_pcb; + +/** Function prototype for udp pcb receive callback functions + * addr and port are in same byte order as in the pcb + * The callback is responsible for freeing the pbuf + * if it's not used any more. + * + * ATTENTION: Be aware that 'addr' might point into the pbuf 'p' so freeing this pbuf + * can make 'addr' invalid, too. + * + * @param arg user supplied argument (udp_pcb.recv_arg) + * @param pcb the udp_pcb which received data + * @param p the packet buffer that was received + * @param addr the remote IP address from which the packet was received + * @param port the remote port from which the packet was received + */ +#if TUN2SOCKS +typedef void (*udp_recv_fn)(void *arg, struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *addr, u16_t port, const ip_addr_t *dest_addr, u16_t dest_port); +#else +typedef void (*udp_recv_fn)(void *arg, struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *addr, u16_t port); +#endif /* TUN2SOCKS */ + +/** the UDP protocol control block */ +struct udp_pcb { +/** Common members of all PCB types */ + IP_PCB; + +/* Protocol specific PCB members */ + + struct udp_pcb *next; + + u8_t flags; + /** ports are in host byte order */ + u16_t local_port, remote_port; + +#if LWIP_MULTICAST_TX_OPTIONS +#if LWIP_IPV4 + /** outgoing network interface for multicast packets, by IPv4 address (if not 'any') */ + ip4_addr_t mcast_ip4; +#endif /* LWIP_IPV4 */ + /** outgoing network interface for multicast packets, by interface index (if nonzero) */ + u8_t mcast_ifindex; + /** TTL for outgoing multicast packets */ + u8_t mcast_ttl; +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + +#if LWIP_UDPLITE + /** used for UDP_LITE only */ + u16_t chksum_len_rx, chksum_len_tx; +#endif /* LWIP_UDPLITE */ + + /** receive callback function */ + udp_recv_fn recv; + /** user-supplied argument for the recv callback */ + void *recv_arg; +}; +/* udp_pcbs export for external reference (e.g. SNMP agent) */ +extern struct udp_pcb *udp_pcbs; + +/* The following functions is the application layer interface to the + UDP code. */ +struct udp_pcb * udp_new (void); +struct udp_pcb * udp_new_ip_type(u8_t type); +void udp_remove (struct udp_pcb *pcb); +err_t udp_bind (struct udp_pcb *pcb, const ip_addr_t *ipaddr, + u16_t port); +void udp_bind_netif (struct udp_pcb *pcb, const struct netif* netif); +err_t udp_connect (struct udp_pcb *pcb, const ip_addr_t *ipaddr, + u16_t port); +void udp_disconnect (struct udp_pcb *pcb); +void udp_recv (struct udp_pcb *pcb, udp_recv_fn recv, + void *recv_arg); +#if TUN2SOCKS +err_t udp_sendto_if (struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, + struct netif *netif, + const ip_addr_t *src_ip, u16_t src_port); +err_t udp_sendto_if_src(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, + struct netif *netif, + const ip_addr_t *src_ip, u16_t src_port); +err_t udp_sendto (struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, + const ip_addr_t *src_ip, u16_t src_port); +#else +err_t udp_sendto_if (struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, + struct netif *netif); +err_t udp_sendto_if_src(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, + struct netif *netif, const ip_addr_t *src_ip); +err_t udp_sendto (struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port); +#endif /* TUN2SOCKS */ +err_t udp_send (struct udp_pcb *pcb, struct pbuf *p); + +#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP +#if TUN2SOCKS +err_t udp_sendto_if_chksum(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, + struct netif *netif, u8_t have_chksum, + u16_t chksum, + const ip_addr_t *src_ip, u16_t src_port); +err_t udp_sendto_chksum(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, + u8_t have_chksum, u16_t chksum, + const ip_addr_t *src_ip, u16_t src_port); +#else +err_t udp_sendto_if_chksum(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, + struct netif *netif, u8_t have_chksum, + u16_t chksum); +err_t udp_sendto_chksum(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, + u8_t have_chksum, u16_t chksum); +#endif /* TUN2SOCKS */ +err_t udp_send_chksum(struct udp_pcb *pcb, struct pbuf *p, + u8_t have_chksum, u16_t chksum); +#if TUN2SOCKS +err_t udp_sendto_if_src_chksum(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, struct netif *netif, + u8_t have_chksum, u16_t chksum, const ip_addr_t *src_ip, u16_t src_port); +#else +err_t udp_sendto_if_src_chksum(struct udp_pcb *pcb, struct pbuf *p, + const ip_addr_t *dst_ip, u16_t dst_port, struct netif *netif, + u8_t have_chksum, u16_t chksum, const ip_addr_t *src_ip); +#endif /* TUN2SOCKS */ +#endif /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */ + +#define udp_flags(pcb) ((pcb)->flags) +#define udp_setflags(pcb, f) ((pcb)->flags = (f)) + +#define udp_set_flags(pcb, set_flags) do { (pcb)->flags = (u8_t)((pcb)->flags | (set_flags)); } while(0) +#define udp_clear_flags(pcb, clr_flags) do { (pcb)->flags = (u8_t)((pcb)->flags & (u8_t)(~(clr_flags) & 0xff)); } while(0) +#define udp_is_flag_set(pcb, flag) (((pcb)->flags & (flag)) != 0) + +/* The following functions are the lower layer interface to UDP. */ +void udp_input (struct pbuf *p, struct netif *inp); + +void udp_init (void); + +/* for compatibility with older implementation */ +#define udp_new_ip6() udp_new_ip_type(IPADDR_TYPE_V6) + +#if LWIP_MULTICAST_TX_OPTIONS +#if LWIP_IPV4 +#define udp_set_multicast_netif_addr(pcb, ip4addr) ip4_addr_copy((pcb)->mcast_ip4, *(ip4addr)) +#define udp_get_multicast_netif_addr(pcb) (&(pcb)->mcast_ip4) +#endif /* LWIP_IPV4 */ +#define udp_set_multicast_netif_index(pcb, idx) ((pcb)->mcast_ifindex = (idx)) +#define udp_get_multicast_netif_index(pcb) ((pcb)->mcast_ifindex) +#define udp_set_multicast_ttl(pcb, value) ((pcb)->mcast_ttl = (value)) +#define udp_get_multicast_ttl(pcb) ((pcb)->mcast_ttl) +#endif /* LWIP_MULTICAST_TX_OPTIONS */ + +#if UDP_DEBUG +void udp_debug_print(struct udp_hdr *udphdr); +#else +#define udp_debug_print(udphdr) +#endif + +void udp_netif_ip_addr_changed(const ip_addr_t* old_addr, const ip_addr_t* new_addr); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_UDP */ + +#endif /* LWIP_HDR_UDP_H */ diff --git a/Other/tun2socks/core/c/include/netif/bridgeif.h b/Other/tun2socks/core/c/include/netif/bridgeif.h new file mode 100644 index 0000000..f4f8cf1 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/bridgeif.h @@ -0,0 +1,127 @@ +/** + * @file + * lwIP netif implementing an IEEE 802.1D MAC Bridge + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_NETIF_BRIDGEIF_H +#define LWIP_HDR_NETIF_BRIDGEIF_H + +#include "netif/bridgeif_opts.h" + +#include "lwip/err.h" +#include "lwip/prot/ethernet.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct netif; + +#if (BRIDGEIF_MAX_PORTS < 0) || (BRIDGEIF_MAX_PORTS >= 64) +#error BRIDGEIF_MAX_PORTS must be [1..63] +#elif BRIDGEIF_MAX_PORTS < 8 +typedef u8_t bridgeif_portmask_t; +#elif BRIDGEIF_MAX_PORTS < 16 +typedef u16_t bridgeif_portmask_t; +#elif BRIDGEIF_MAX_PORTS < 32 +typedef u32_t bridgeif_portmask_t; +#elif BRIDGEIF_MAX_PORTS < 64 +typedef u64_t bridgeif_portmask_t; +#endif + +#define BR_FLOOD ((bridgeif_portmask_t)-1) + +/** @ingroup bridgeif + * Initialisation data for @ref bridgeif_init. + * An instance of this type must be passed as parameter 'state' to @ref netif_add + * when the bridge is added. + */ +typedef struct bridgeif_initdata_s { + /** MAC address of the bridge (cannot use the netif's addresses) */ + struct eth_addr ethaddr; + /** Maximum number of ports in the bridge (ports are stored in an array, this + influences memory allocated for netif->state of the bridge netif). */ + u8_t max_ports; + /** Maximum number of dynamic/learning entries in the bridge's forwarding database. + In the default implementation, this controls memory consumption only. */ + u16_t max_fdb_dynamic_entries; + /** Maximum number of static forwarding entries. Influences memory consumption! */ + u16_t max_fdb_static_entries; +} bridgeif_initdata_t; + +/** @ingroup bridgeif + * Use this for constant initialization of a bridgeif_initdat_t + * (ethaddr must be passed as ETH_ADDR()) + */ +#define BRIDGEIF_INITDATA1(max_ports, max_fdb_dynamic_entries, max_fdb_static_entries, ethaddr) {ethaddr, max_ports, max_fdb_dynamic_entries, max_fdb_static_entries} +/** @ingroup bridgeif + * Use this for constant initialization of a bridgeif_initdat_t + * (each byte of ethaddr must be passed) + */ +#define BRIDGEIF_INITDATA2(max_ports, max_fdb_dynamic_entries, max_fdb_static_entries, e0, e1, e2, e3, e4, e5) {{e0, e1, e2, e3, e4, e5}, max_ports, max_fdb_dynamic_entries, max_fdb_static_entries} + +err_t bridgeif_init(struct netif *netif); +err_t bridgeif_add_port(struct netif *bridgeif, struct netif *portif); +err_t bridgeif_fdb_add(struct netif *bridgeif, const struct eth_addr *addr, bridgeif_portmask_t ports); +err_t bridgeif_fdb_remove(struct netif *bridgeif, const struct eth_addr *addr); + +/* FDB interface, can be replaced by own implementation */ +void bridgeif_fdb_update_src(void *fdb_ptr, struct eth_addr *src_addr, u8_t port_idx); +bridgeif_portmask_t bridgeif_fdb_get_dst_ports(void *fdb_ptr, struct eth_addr *dst_addr); +void* bridgeif_fdb_init(u16_t max_fdb_entries); + +#if BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT +#ifndef BRIDGEIF_DECL_PROTECT +/* define bridgeif protection to sys_arch_protect... */ +#include "lwip/sys.h" +#define BRIDGEIF_DECL_PROTECT(lev) SYS_ARCH_DECL_PROTECT(lev) +#define BRIDGEIF_READ_PROTECT(lev) SYS_ARCH_PROTECT(lev) +#define BRIDGEIF_READ_UNPROTECT(lev) SYS_ARCH_UNPROTECT(lev) +#define BRIDGEIF_WRITE_PROTECT(lev) +#define BRIDGEIF_WRITE_UNPROTECT(lev) +#endif +#else /* BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT */ +#include "lwip/tcpip.h" +#define BRIDGEIF_DECL_PROTECT(lev) +#define BRIDGEIF_READ_PROTECT(lev) +#define BRIDGEIF_READ_UNPROTECT(lev) +#define BRIDGEIF_WRITE_PROTECT(lev) +#define BRIDGEIF_WRITE_UNPROTECT(lev) +#endif /* BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_NETIF_BRIDGEIF_H */ diff --git a/Other/tun2socks/core/c/include/netif/bridgeif_opts.h b/Other/tun2socks/core/c/include/netif/bridgeif_opts.h new file mode 100644 index 0000000..b85c301 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/bridgeif_opts.h @@ -0,0 +1,90 @@ +/** + * @file + * lwIP netif implementing an IEEE 802.1D MAC Bridge + */ + +/* + * Copyright (c) 2017 Simon Goldschmidt. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ + +#ifndef LWIP_HDR_NETIF_BRIDGEIF_OPTS_H +#define LWIP_HDR_NETIF_BRIDGEIF_OPTS_H + +#include "lwip/opt.h" + +/** + * @defgroup bridgeif_opts Options + * @ingroup bridgeif + * @{ + */ + +/** BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT==1: set port netif's 'input' function + * to call directly into bridgeif code and on top of that, directly call into + * the selected forwarding port's 'linkoutput' function. + * This means that the bridgeif input/output path is protected from concurrent access + * but as well, *all* bridge port netif's drivers must correctly handle concurrent access! + * == 0: get into tcpip_thread for every input packet (no multithreading) + * ATTENTION: as ==0 relies on tcpip.h, the default depends on NO_SYS setting + */ +#ifndef BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT +#define BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT NO_SYS +#endif + +/** BRIDGEIF_MAX_PORTS: this is used to create a typedef used for forwarding + * bit-fields: the number of bits required is this + 1 (for the internal/cpu port) + * (63 is the maximum, resulting in an u64_t for the bit mask) + * ATTENTION: this controls the maximum number of the implementation only! + * The max. number of ports per bridge must still be passed via netif_add parameter! + */ +#ifndef BRIDGEIF_MAX_PORTS +#define BRIDGEIF_MAX_PORTS 7 +#endif + +/** BRIDGEIF_DEBUG: Enable generic debugging in bridgeif.c. */ +#ifndef BRIDGEIF_DEBUG +#define BRIDGEIF_DEBUG LWIP_DBG_OFF +#endif + +/** BRIDGEIF_DEBUG: Enable FDB debugging in bridgeif.c. */ +#ifndef BRIDGEIF_FDB_DEBUG +#define BRIDGEIF_FDB_DEBUG LWIP_DBG_OFF +#endif + +/** BRIDGEIF_DEBUG: Enable forwarding debugging in bridgeif.c. */ +#ifndef BRIDGEIF_FW_DEBUG +#define BRIDGEIF_FW_DEBUG LWIP_DBG_OFF +#endif + +/** + * @} + */ + +#endif /* LWIP_HDR_NETIF_BRIDGEIF_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/netif/etharp.h b/Other/tun2socks/core/c/include/netif/etharp.h new file mode 100644 index 0000000..b536fd2 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/etharp.h @@ -0,0 +1,3 @@ +/* ARP has been moved to core/ipv4, provide this #include for compatibility only */ +#include "lwip/etharp.h" +#include "netif/ethernet.h" diff --git a/Other/tun2socks/core/c/include/netif/ethernet.h b/Other/tun2socks/core/c/include/netif/ethernet.h new file mode 100644 index 0000000..49649cb --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ethernet.h @@ -0,0 +1,77 @@ +/** + * @file + * Ethernet input function - handles INCOMING ethernet level traffic + * To be used in most low-level netif implementations + */ + +/* + * Copyright (c) 2001-2003 Swedish Institute of Computer Science. + * Copyright (c) 2003-2004 Leon Woestenberg + * Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ + +#ifndef LWIP_HDR_NETIF_ETHERNET_H +#define LWIP_HDR_NETIF_ETHERNET_H + +#include "lwip/opt.h" + +#include "lwip/pbuf.h" +#include "lwip/netif.h" +#include "lwip/prot/ethernet.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if LWIP_ARP || LWIP_ETHERNET + +/** Define this to 1 and define LWIP_ARP_FILTER_NETIF_FN(pbuf, netif, type) + * to a filter function that returns the correct netif when using multiple + * netifs on one hardware interface where the netif's low-level receive + * routine cannot decide for the correct netif (e.g. when mapping multiple + * IP addresses to one hardware interface). + */ +#ifndef LWIP_ARP_FILTER_NETIF +#define LWIP_ARP_FILTER_NETIF 0 +#endif + +err_t ethernet_input(struct pbuf *p, struct netif *netif); +err_t ethernet_output(struct netif* netif, struct pbuf* p, const struct eth_addr* src, const struct eth_addr* dst, u16_t eth_type); + +extern const struct eth_addr ethbroadcast, ethzero; + +#endif /* LWIP_ARP || LWIP_ETHERNET */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_NETIF_ETHERNET_H */ diff --git a/Other/tun2socks/core/c/include/netif/ieee802154.h b/Other/tun2socks/core/c/include/netif/ieee802154.h new file mode 100644 index 0000000..54e019f --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ieee802154.h @@ -0,0 +1,112 @@ +/** + * @file + * Definitions for IEEE 802.15.4 MAC frames + */ + +/* + * Copyright (c) 2018 Simon Goldschmidt. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ +#ifndef LWIP_HDR_NETIF_IEEE802154_H +#define LWIP_HDR_NETIF_IEEE802154_H + +#include "lwip/opt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +/** General MAC frame format + * This shows the full featured header, mainly for documentation. + * Some fields are omitted or shortened to achieve frame compression. + */ +struct ieee_802154_hdr { + /** See IEEE_802154_FC_* defines */ + PACK_STRUCT_FIELD(u16_t frame_control); + /** Sequence number is omitted if IEEE_802154_FC_SEQNO_SUPPR is set in frame_control */ + PACK_STRUCT_FLD_8(u8_t sequence_number); + /** Destination PAN ID is omitted if Destination Addressing Mode is 0 */ + PACK_STRUCT_FIELD(u16_t destination_pan_id); + /** Destination Address is omitted if Destination Addressing Mode is 0 */ + PACK_STRUCT_FLD_8(u8_t destination_address[8]); + /** Source PAN ID is omitted if Source Addressing Mode is 0 + or if IEEE_802154_FC_PANID_COMPR is set in frame control*/ + PACK_STRUCT_FIELD(u16_t source_pan_id); + /** Source Address is omitted if Source Addressing Mode is 0 */ + PACK_STRUCT_FLD_8(u8_t source_address[8]); + /* The rest is variable */ +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +/* Addressing modes (2 bits) */ +#define IEEE_802154_ADDR_MODE_NO_ADDR 0x00 /* PAN ID and address fields are not present */ +#define IEEE_802154_ADDR_MODE_RESERVED 0x01 /* Reserved */ +#define IEEE_802154_ADDR_MODE_SHORT 0x02 /* Address field contains a short address (16 bit) */ +#define IEEE_802154_ADDR_MODE_EXT 0x03 /* Address field contains an extended address (64 bit) */ + +/* IEEE 802.15.4 Frame Control definitions (2 bytes; see IEEE 802.15.4-2015 ch. 7.2.1) */ +#define IEEE_802154_FC_FT_MASK 0x0007 /* bits 0..2: Frame Type */ +#define IEEE_802154_FC_FT_BEACON 0x00 +#define IEEE_802154_FC_FT_DATA 0x01 +#define IEEE_802154_FC_FT_ACK 0x02 +#define IEEE_802154_FC_FT_MAC_CMD 0x03 +#define IEEE_802154_FC_FT_RESERVED 0x04 +#define IEEE_802154_FC_FT_MULTIPURPOSE 0x05 +#define IEEE_802154_FC_FT_FRAG 0x06 +#define IEEE_802154_FC_FT_EXT 0x07 +#define IEEE_802154_FC_SEC_EN 0x0008 /* bit 3: Security Enabled */ +#define IEEE_802154_FC_FRAME_PEND 0x0010 /* bit 4: Frame Pending */ +#define IEEE_802154_FC_ACK_REQ 0x0020 /* bit 5: AR (ACK required) */ +#define IEEE_802154_FC_PANID_COMPR 0x0040 /* bit 6: PAN ID Compression (src and dst are equal, src PAN ID omitted) */ +#define IEEE_802154_FC_RESERVED 0x0080 +#define IEEE_802154_FC_SEQNO_SUPPR 0x0100 /* bit 8: Sequence Number Suppression */ +#define IEEE_802154_FC_IE_PRESENT 0x0200 /* bit 9: IE Present */ +#define IEEE_802154_FC_DST_ADDR_MODE_MASK 0x0c00 /* bits 10..11: Destination Addressing Mode */ +#define IEEE_802154_FC_DST_ADDR_MODE_NO_ADDR (IEEE_802154_ADDR_MODE_NO_ADDR << 10) +#define IEEE_802154_FC_DST_ADDR_MODE_SHORT (IEEE_802154_ADDR_MODE_SHORT << 10) +#define IEEE_802154_FC_DST_ADDR_MODE_EXT (IEEE_802154_ADDR_MODE_EXT << 10) +#define IEEE_802154_FC_FRAME_VERSION_MASK 0x3000 /* bits 12..13: Frame Version */ +#define IEEE_802154_FC_FRAME_VERSION_GET(x) (((x) & IEEE_802154_FC_FRAME_VERSION_MASK) >> 12) +#define IEEE_802154_FC_SRC_ADDR_MODE_MASK 0xc000 /* bits 14..15: Source Addressing Mode */ +#define IEEE_802154_FC_SRC_ADDR_MODE_SHORT (IEEE_802154_ADDR_MODE_SHORT << 14) +#define IEEE_802154_FC_SRC_ADDR_MODE_EXT (IEEE_802154_ADDR_MODE_EXT << 14) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_NETIF_IEEE802154_H */ diff --git a/Other/tun2socks/core/c/include/netif/lowpan6.h b/Other/tun2socks/core/c/include/netif/lowpan6.h new file mode 100644 index 0000000..ecff24b --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/lowpan6.h @@ -0,0 +1,89 @@ +/** + * @file + * + * 6LowPAN output for IPv6. Uses ND tables for link-layer addressing. Fragments packets to 6LowPAN units. + */ + +/* + * Copyright (c) 2015 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#ifndef LWIP_HDR_LOWPAN6_H +#define LWIP_HDR_LOWPAN6_H + +#include "netif/lowpan6_opts.h" + +#if LWIP_IPV6 + +#include "netif/lowpan6_common.h" +#include "lwip/pbuf.h" +#include "lwip/ip.h" +#include "lwip/ip_addr.h" +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** 1 second period for reassembly */ +#define LOWPAN6_TMR_INTERVAL 1000 + +void lowpan6_tmr(void); + +err_t lowpan6_set_context(u8_t idx, const ip6_addr_t * context); +err_t lowpan6_set_short_addr(u8_t addr_high, u8_t addr_low); + +#if LWIP_IPV4 +err_t lowpan4_output(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr); +#endif /* LWIP_IPV4 */ +err_t lowpan6_output(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr); +err_t lowpan6_input(struct pbuf * p, struct netif *netif); +err_t lowpan6_if_init(struct netif *netif); + +/* pan_id in network byte order. */ +err_t lowpan6_set_pan_id(u16_t pan_id); + +u16_t lowpan6_calc_crc(const void *buf, u16_t len); + +#if !NO_SYS +err_t tcpip_6lowpan_input(struct pbuf *p, struct netif *inp); +#endif /* !NO_SYS */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6 */ + +#endif /* LWIP_HDR_LOWPAN6_H */ diff --git a/Other/tun2socks/core/c/include/netif/lowpan6_ble.h b/Other/tun2socks/core/c/include/netif/lowpan6_ble.h new file mode 100644 index 0000000..01896a7 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/lowpan6_ble.h @@ -0,0 +1,78 @@ +/** + * @file + * 6LowPAN over BLE for IPv6 (RFC7668). + */ + +/* + * Copyright (c) 2017 Benjamin Aigner + * Copyright (c) 2015 Inico Technologies Ltd. , Author: Ivan Delamer + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * Author: Benjamin Aigner + * + * Based on the original 6lowpan implementation of lwIP ( @see 6lowpan.c) + */ + +#ifndef LWIP_HDR_LOWPAN6_BLE_H +#define LWIP_HDR_LOWPAN6_BLE_H + +#include "netif/lowpan6_opts.h" + +#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ + +#include "netif/lowpan6_common.h" +#include "lwip/pbuf.h" +#include "lwip/ip.h" +#include "lwip/ip_addr.h" +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + +err_t rfc7668_output(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr); +err_t rfc7668_input(struct pbuf * p, struct netif *netif); +err_t rfc7668_set_local_addr_eui64(struct netif *netif, const u8_t *local_addr, size_t local_addr_len); +err_t rfc7668_set_local_addr_mac48(struct netif *netif, const u8_t *local_addr, size_t local_addr_len, int is_public_addr); +err_t rfc7668_set_peer_addr_eui64(struct netif *netif, const u8_t *peer_addr, size_t peer_addr_len); +err_t rfc7668_set_peer_addr_mac48(struct netif *netif, const u8_t *peer_addr, size_t peer_addr_len, int is_public_addr); +err_t rfc7668_set_context(u8_t index, const ip6_addr_t * context); +err_t rfc7668_if_init(struct netif *netif); + +#if !NO_SYS +err_t tcpip_rfc7668_input(struct pbuf *p, struct netif *inp); +#endif + +void ble_addr_to_eui64(uint8_t *dst, const uint8_t *src, int public_addr); +void eui64_to_ble_addr(uint8_t *dst, const uint8_t *src); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6 */ + +#endif /* LWIP_HDR_LOWPAN6_BLE_H */ diff --git a/Other/tun2socks/core/c/include/netif/lowpan6_common.h b/Other/tun2socks/core/c/include/netif/lowpan6_common.h new file mode 100644 index 0000000..0dc13ab --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/lowpan6_common.h @@ -0,0 +1,82 @@ +/** + * @file + * + * Common 6LowPAN routines for IPv6. Uses ND tables for link-layer addressing. Fragments packets to 6LowPAN units. + */ + +/* + * Copyright (c) 2015 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#ifndef LWIP_HDR_LOWPAN6_COMMON_H +#define LWIP_HDR_LOWPAN6_COMMON_H + +#include "netif/lowpan6_opts.h" + +#if LWIP_IPV6 /* don't build if IPv6 is disabled in lwipopts.h */ + +#include "lwip/pbuf.h" +#include "lwip/ip.h" +#include "lwip/ip6_addr.h" +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** Helper define for a link layer address, which can be encoded as 0, 2 or 8 bytes */ +struct lowpan6_link_addr { + /* encoded length of the address */ + u8_t addr_len; + /* address bytes */ + u8_t addr[8]; +}; + +s8_t lowpan6_get_address_mode(const ip6_addr_t *ip6addr, const struct lowpan6_link_addr *mac_addr); + +#if LWIP_6LOWPAN_IPHC +err_t lowpan6_compress_headers(struct netif *netif, u8_t *inbuf, size_t inbuf_size, u8_t *outbuf, size_t outbuf_size, + u8_t *lowpan6_header_len_out, u8_t *hidden_header_len_out, ip6_addr_t *lowpan6_contexts, + const struct lowpan6_link_addr *src, const struct lowpan6_link_addr *dst); +struct pbuf *lowpan6_decompress(struct pbuf *p, u16_t datagram_size, ip6_addr_t *lowpan6_contexts, + struct lowpan6_link_addr *src, struct lowpan6_link_addr *dest); +#endif /* LWIP_6LOWPAN_IPHC */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6 */ + +#endif /* LWIP_HDR_LOWPAN6_COMMON_H */ diff --git a/Other/tun2socks/core/c/include/netif/lowpan6_opts.h b/Other/tun2socks/core/c/include/netif/lowpan6_opts.h new file mode 100644 index 0000000..17d46cd --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/lowpan6_opts.h @@ -0,0 +1,122 @@ +/** + * @file + * 6LowPAN options list + */ + +/* + * Copyright (c) 2015 Inico Technologies Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Ivan Delamer + * + * + * Please coordinate changes and requests with Ivan Delamer + * + */ + +#ifndef LWIP_HDR_LOWPAN6_OPTS_H +#define LWIP_HDR_LOWPAN6_OPTS_H + +#include "lwip/opt.h" + +/** LWIP_6LOWPAN_NUM_CONTEXTS: define the number of compression + * contexts per netif type + */ +#ifndef LWIP_6LOWPAN_NUM_CONTEXTS +#define LWIP_6LOWPAN_NUM_CONTEXTS 10 +#endif + +/** LWIP_6LOWPAN_INFER_SHORT_ADDRESS: set this to 0 to disable creating + * short addresses for matching addresses (debug only) + */ +#ifndef LWIP_6LOWPAN_INFER_SHORT_ADDRESS +#define LWIP_6LOWPAN_INFER_SHORT_ADDRESS 1 +#endif + +/** LWIP_6LOWPAN_IPHC: set this to 0 to disable IP header compression as per + * RFC 6282 (which is mandatory for BLE) + */ +#ifndef LWIP_6LOWPAN_IPHC +#define LWIP_6LOWPAN_IPHC 1 +#endif + +/** Set this to 1 if your IEEE 802.15.4 interface can calculate and check the + * CRC in hardware. This means TX packets get 2 zero bytes added on transmission + * which are to be filled with the CRC. + */ +#ifndef LWIP_6LOWPAN_802154_HW_CRC +#define LWIP_6LOWPAN_802154_HW_CRC 0 +#endif + +/** If LWIP_6LOWPAN_802154_HW_CRC==0, this can override the default slow + * implementation of the CRC used for 6LoWPAN over IEEE 802.15.4 (which uses + * a shift register). + */ +#ifndef LWIP_6LOWPAN_CALC_CRC +#define LWIP_6LOWPAN_CALC_CRC(buf, len) lowpan6_calc_crc(buf, len) +#endif + +/** Debug level for 6LoWPAN in general */ +#ifndef LWIP_LOWPAN6_DEBUG +#define LWIP_LOWPAN6_DEBUG LWIP_DBG_OFF +#endif + +/** Debug level for 6LoWPAN over IEEE 802.15.4 */ +#ifndef LWIP_LOWPAN6_802154_DEBUG +#define LWIP_LOWPAN6_802154_DEBUG LWIP_DBG_OFF +#endif + +/** LWIP_LOWPAN6_IP_COMPRESSED_DEBUG: enable compressed IP frame + * output debugging + */ +#ifndef LWIP_LOWPAN6_IP_COMPRESSED_DEBUG +#define LWIP_LOWPAN6_IP_COMPRESSED_DEBUG LWIP_DBG_OFF +#endif + +/** LWIP_LOWPAN6_DECOMPRESSION_DEBUG: enable decompression debug output + */ +#ifndef LWIP_LOWPAN6_DECOMPRESSION_DEBUG +#define LWIP_LOWPAN6_DECOMPRESSION_DEBUG LWIP_DBG_OFF +#endif + +/** LWIP_RFC7668_IP_UNCOMPRESSED_DEBUG: enable decompressed IP frame + * output debugging */ +#ifndef LWIP_RFC7668_IP_UNCOMPRESSED_DEBUG +#define LWIP_RFC7668_IP_UNCOMPRESSED_DEBUG LWIP_DBG_OFF +#endif + +/** LWIP_RFC7668_LINUX_WORKAROUND_PUBLIC_ADDRESS: + * Currently, the linux kernel driver for 6lowpan sets/clears a bit in + * the address, depending on the BD address (either public or not). + * Might not be RFC7668 conform, so you may select to do that (=1) or + * not (=0) */ +#ifndef LWIP_RFC7668_LINUX_WORKAROUND_PUBLIC_ADDRESS +#define LWIP_RFC7668_LINUX_WORKAROUND_PUBLIC_ADDRESS 1 +#endif + + +#endif /* LWIP_HDR_LOWPAN6_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/ccp.h b/Other/tun2socks/core/c/include/netif/ppp/ccp.h new file mode 100644 index 0000000..b228522 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/ccp.h @@ -0,0 +1,164 @@ +/* + * ccp.h - Definitions for PPP Compression Control Protocol. + * + * Copyright (c) 1994-2002 Paul Mackerras. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. The name(s) of the authors of this software must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * 3. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Paul Mackerras + * ". + * + * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: ccp.h,v 1.12 2004/11/04 10:02:26 paulus Exp $ + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && CCP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef CCP_H +#define CCP_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * CCP codes. + */ + +#define CCP_CONFREQ 1 +#define CCP_CONFACK 2 +#define CCP_TERMREQ 5 +#define CCP_TERMACK 6 +#define CCP_RESETREQ 14 +#define CCP_RESETACK 15 + +/* + * Max # bytes for a CCP option + */ + +#define CCP_MAX_OPTION_LENGTH 32 + +/* + * Parts of a CCP packet. + */ + +#define CCP_CODE(dp) ((dp)[0]) +#define CCP_ID(dp) ((dp)[1]) +#define CCP_LENGTH(dp) (((dp)[2] << 8) + (dp)[3]) +#define CCP_HDRLEN 4 + +#define CCP_OPT_CODE(dp) ((dp)[0]) +#define CCP_OPT_LENGTH(dp) ((dp)[1]) +#define CCP_OPT_MINLEN 2 + +#if BSDCOMPRESS_SUPPORT +/* + * Definitions for BSD-Compress. + */ + +#define CI_BSD_COMPRESS 21 /* config. option for BSD-Compress */ +#define CILEN_BSD_COMPRESS 3 /* length of config. option */ + +/* Macros for handling the 3rd byte of the BSD-Compress config option. */ +#define BSD_NBITS(x) ((x) & 0x1F) /* number of bits requested */ +#define BSD_VERSION(x) ((x) >> 5) /* version of option format */ +#define BSD_CURRENT_VERSION 1 /* current version number */ +#define BSD_MAKE_OPT(v, n) (((v) << 5) | (n)) + +#define BSD_MIN_BITS 9 /* smallest code size supported */ +#define BSD_MAX_BITS 15 /* largest code size supported */ +#endif /* BSDCOMPRESS_SUPPORT */ + +#if DEFLATE_SUPPORT +/* + * Definitions for Deflate. + */ + +#define CI_DEFLATE 26 /* config option for Deflate */ +#define CI_DEFLATE_DRAFT 24 /* value used in original draft RFC */ +#define CILEN_DEFLATE 4 /* length of its config option */ + +#define DEFLATE_MIN_SIZE 9 +#define DEFLATE_MAX_SIZE 15 +#define DEFLATE_METHOD_VAL 8 +#define DEFLATE_SIZE(x) (((x) >> 4) + 8) +#define DEFLATE_METHOD(x) ((x) & 0x0F) +#define DEFLATE_MAKE_OPT(w) ((((w) - 8) << 4) + DEFLATE_METHOD_VAL) +#define DEFLATE_CHK_SEQUENCE 0 +#endif /* DEFLATE_SUPPORT */ + +#if MPPE_SUPPORT +/* + * Definitions for MPPE. + */ + +#define CI_MPPE 18 /* config option for MPPE */ +#define CILEN_MPPE 6 /* length of config option */ +#endif /* MPPE_SUPPORT */ + +#if PREDICTOR_SUPPORT +/* + * Definitions for other, as yet unsupported, compression methods. + */ + +#define CI_PREDICTOR_1 1 /* config option for Predictor-1 */ +#define CILEN_PREDICTOR_1 2 /* length of its config option */ +#define CI_PREDICTOR_2 2 /* config option for Predictor-2 */ +#define CILEN_PREDICTOR_2 2 /* length of its config option */ +#endif /* PREDICTOR_SUPPORT */ + +typedef struct ccp_options { +#if DEFLATE_SUPPORT + unsigned int deflate :1; /* do Deflate? */ + unsigned int deflate_correct :1; /* use correct code for deflate? */ + unsigned int deflate_draft :1; /* use draft RFC code for deflate? */ +#endif /* DEFLATE_SUPPORT */ +#if BSDCOMPRESS_SUPPORT + unsigned int bsd_compress :1; /* do BSD Compress? */ +#endif /* BSDCOMPRESS_SUPPORT */ +#if PREDICTOR_SUPPORT + unsigned int predictor_1 :1; /* do Predictor-1? */ + unsigned int predictor_2 :1; /* do Predictor-2? */ +#endif /* PREDICTOR_SUPPORT */ + +#if MPPE_SUPPORT + u8_t mppe; /* MPPE bitfield */ +#endif /* MPPE_SUPPORT */ +#if BSDCOMPRESS_SUPPORT + u_short bsd_bits; /* # bits/code for BSD Compress */ +#endif /* BSDCOMPRESS_SUPPORT */ +#if DEFLATE_SUPPORT + u_short deflate_size; /* lg(window size) for Deflate */ +#endif /* DEFLATE_SUPPORT */ + u8_t method; /* code for chosen compression method */ +} ccp_options; + +extern const struct protent ccp_protent; + +void ccp_resetrequest(ppp_pcb *pcb); /* Issue a reset-request. */ + +#ifdef __cplusplus +} +#endif + +#endif /* CCP_H */ +#endif /* PPP_SUPPORT && CCP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/chap-md5.h b/Other/tun2socks/core/c/include/netif/ppp/chap-md5.h new file mode 100644 index 0000000..eb0269f --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/chap-md5.h @@ -0,0 +1,36 @@ +/* + * chap-md5.h - New CHAP/MD5 implementation. + * + * Copyright (c) 2003 Paul Mackerras. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. The name(s) of the authors of this software must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * 3. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Paul Mackerras + * ". + * + * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && CHAP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +extern const struct chap_digest_type md5_digest; + +#endif /* PPP_SUPPORT && CHAP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/chap-new.h b/Other/tun2socks/core/c/include/netif/ppp/chap-new.h new file mode 100644 index 0000000..2d8cd9c --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/chap-new.h @@ -0,0 +1,200 @@ +/* + * chap-new.c - New CHAP implementation. + * + * Copyright (c) 2003 Paul Mackerras. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. The name(s) of the authors of this software must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * 3. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Paul Mackerras + * ". + * + * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && CHAP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef CHAP_H +#define CHAP_H + +#include "ppp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * CHAP packets begin with a standard header with code, id, len (2 bytes). + */ +#define CHAP_HDRLEN 4 + +/* + * Values for the code field. + */ +#define CHAP_CHALLENGE 1 +#define CHAP_RESPONSE 2 +#define CHAP_SUCCESS 3 +#define CHAP_FAILURE 4 + +/* + * CHAP digest codes. + */ +#define CHAP_MD5 5 +#if MSCHAP_SUPPORT +#define CHAP_MICROSOFT 0x80 +#define CHAP_MICROSOFT_V2 0x81 +#endif /* MSCHAP_SUPPORT */ + +/* + * Semi-arbitrary limits on challenge and response fields. + */ +#define MAX_CHALLENGE_LEN 64 +#define MAX_RESPONSE_LEN 64 + +/* + * These limits apply to challenge and response packets we send. + * The +4 is the +1 that we actually need rounded up. + */ +#define CHAL_MAX_PKTLEN (PPP_HDRLEN + CHAP_HDRLEN + 4 + MAX_CHALLENGE_LEN + MAXNAMELEN) +#define RESP_MAX_PKTLEN (PPP_HDRLEN + CHAP_HDRLEN + 4 + MAX_RESPONSE_LEN + MAXNAMELEN) + +/* bitmask of supported algorithms */ +#if MSCHAP_SUPPORT +#define MDTYPE_MICROSOFT_V2 0x1 +#define MDTYPE_MICROSOFT 0x2 +#endif /* MSCHAP_SUPPORT */ +#define MDTYPE_MD5 0x4 +#define MDTYPE_NONE 0 + +#if MSCHAP_SUPPORT +/* Return the digest alg. ID for the most preferred digest type. */ +#define CHAP_DIGEST(mdtype) \ + ((mdtype) & MDTYPE_MD5)? CHAP_MD5: \ + ((mdtype) & MDTYPE_MICROSOFT_V2)? CHAP_MICROSOFT_V2: \ + ((mdtype) & MDTYPE_MICROSOFT)? CHAP_MICROSOFT: \ + 0 +#else /* !MSCHAP_SUPPORT */ +#define CHAP_DIGEST(mdtype) \ + ((mdtype) & MDTYPE_MD5)? CHAP_MD5: \ + 0 +#endif /* MSCHAP_SUPPORT */ + +/* Return the bit flag (lsb set) for our most preferred digest type. */ +#define CHAP_MDTYPE(mdtype) ((mdtype) ^ ((mdtype) - 1)) & (mdtype) + +/* Return the bit flag for a given digest algorithm ID. */ +#if MSCHAP_SUPPORT +#define CHAP_MDTYPE_D(digest) \ + ((digest) == CHAP_MICROSOFT_V2)? MDTYPE_MICROSOFT_V2: \ + ((digest) == CHAP_MICROSOFT)? MDTYPE_MICROSOFT: \ + ((digest) == CHAP_MD5)? MDTYPE_MD5: \ + 0 +#else /* !MSCHAP_SUPPORT */ +#define CHAP_MDTYPE_D(digest) \ + ((digest) == CHAP_MD5)? MDTYPE_MD5: \ + 0 +#endif /* MSCHAP_SUPPORT */ + +/* Can we do the requested digest? */ +#if MSCHAP_SUPPORT +#define CHAP_CANDIGEST(mdtype, digest) \ + ((digest) == CHAP_MICROSOFT_V2)? (mdtype) & MDTYPE_MICROSOFT_V2: \ + ((digest) == CHAP_MICROSOFT)? (mdtype) & MDTYPE_MICROSOFT: \ + ((digest) == CHAP_MD5)? (mdtype) & MDTYPE_MD5: \ + 0 +#else /* !MSCHAP_SUPPORT */ +#define CHAP_CANDIGEST(mdtype, digest) \ + ((digest) == CHAP_MD5)? (mdtype) & MDTYPE_MD5: \ + 0 +#endif /* MSCHAP_SUPPORT */ + +/* + * The code for each digest type has to supply one of these. + */ +struct chap_digest_type { + int code; + +#if PPP_SERVER + /* + * Note: challenge and response arguments below are formatted as + * a length byte followed by the actual challenge/response data. + */ + void (*generate_challenge)(ppp_pcb *pcb, unsigned char *challenge); + int (*verify_response)(ppp_pcb *pcb, int id, const char *name, + const unsigned char *secret, int secret_len, + const unsigned char *challenge, const unsigned char *response, + char *message, int message_space); +#endif /* PPP_SERVER */ + void (*make_response)(ppp_pcb *pcb, unsigned char *response, int id, const char *our_name, + const unsigned char *challenge, const char *secret, int secret_len, + unsigned char *priv); + int (*check_success)(ppp_pcb *pcb, unsigned char *pkt, int len, unsigned char *priv); + void (*handle_failure)(ppp_pcb *pcb, unsigned char *pkt, int len); +}; + +/* + * Each interface is described by chap structure. + */ +#if CHAP_SUPPORT +typedef struct chap_client_state { + u8_t flags; + const char *name; + const struct chap_digest_type *digest; + unsigned char priv[64]; /* private area for digest's use */ +} chap_client_state; + +#if PPP_SERVER +typedef struct chap_server_state { + u8_t flags; + u8_t id; + const char *name; + const struct chap_digest_type *digest; + int challenge_xmits; + int challenge_pktlen; + unsigned char challenge[CHAL_MAX_PKTLEN]; +} chap_server_state; +#endif /* PPP_SERVER */ +#endif /* CHAP_SUPPORT */ + +#if 0 /* UNUSED */ +/* Hook for a plugin to validate CHAP challenge */ +extern int (*chap_verify_hook)(char *name, char *ourname, int id, + const struct chap_digest_type *digest, + unsigned char *challenge, unsigned char *response, + char *message, int message_space); +#endif /* UNUSED */ + +#if PPP_SERVER +/* Called by authentication code to start authenticating the peer. */ +extern void chap_auth_peer(ppp_pcb *pcb, const char *our_name, int digest_code); +#endif /* PPP_SERVER */ + +/* Called by auth. code to start authenticating us to the peer. */ +extern void chap_auth_with_peer(ppp_pcb *pcb, const char *our_name, int digest_code); + +/* Represents the CHAP protocol to the main pppd code */ +extern const struct protent chap_protent; + +#ifdef __cplusplus +} +#endif + +#endif /* CHAP_H */ +#endif /* PPP_SUPPORT && CHAP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/chap_ms.h b/Other/tun2socks/core/c/include/netif/ppp/chap_ms.h new file mode 100644 index 0000000..0795291 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/chap_ms.h @@ -0,0 +1,44 @@ +/* + * chap_ms.h - Challenge Handshake Authentication Protocol definitions. + * + * Copyright (c) 1995 Eric Rosenquist. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name(s) of the authors of this software must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: chap_ms.h,v 1.13 2004/11/15 22:13:26 paulus Exp $ + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && MSCHAP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef CHAPMS_INCLUDE +#define CHAPMS_INCLUDE + +extern const struct chap_digest_type chapms_digest; +extern const struct chap_digest_type chapms2_digest; + +#endif /* CHAPMS_INCLUDE */ + +#endif /* PPP_SUPPORT && MSCHAP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/eap.h b/Other/tun2socks/core/c/include/netif/ppp/eap.h new file mode 100644 index 0000000..3ee9aaf --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/eap.h @@ -0,0 +1,169 @@ +/* + * eap.h - Extensible Authentication Protocol for PPP (RFC 2284) + * + * Copyright (c) 2001 by Sun Microsystems, Inc. + * All rights reserved. + * + * Non-exclusive rights to redistribute, modify, translate, and use + * this software in source and binary forms, in whole or in part, is + * hereby granted, provided that the above copyright notice is + * duplicated in any source form, and that neither the name of the + * copyright holder nor the author is used to endorse or promote + * products derived from this software. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * Original version by James Carlson + * + * $Id: eap.h,v 1.2 2003/06/11 23:56:26 paulus Exp $ + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && EAP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef PPP_EAP_H +#define PPP_EAP_H + +#include "ppp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Packet header = Code, id, length. + */ +#define EAP_HEADERLEN 4 + + +/* EAP message codes. */ +#define EAP_REQUEST 1 +#define EAP_RESPONSE 2 +#define EAP_SUCCESS 3 +#define EAP_FAILURE 4 + +/* EAP types */ +#define EAPT_IDENTITY 1 +#define EAPT_NOTIFICATION 2 +#define EAPT_NAK 3 /* (response only) */ +#define EAPT_MD5CHAP 4 +#define EAPT_OTP 5 /* One-Time Password; RFC 1938 */ +#define EAPT_TOKEN 6 /* Generic Token Card */ +/* 7 and 8 are unassigned. */ +#define EAPT_RSA 9 /* RSA Public Key Authentication */ +#define EAPT_DSS 10 /* DSS Unilateral */ +#define EAPT_KEA 11 /* KEA */ +#define EAPT_KEA_VALIDATE 12 /* KEA-VALIDATE */ +#define EAPT_TLS 13 /* EAP-TLS */ +#define EAPT_DEFENDER 14 /* Defender Token (AXENT) */ +#define EAPT_W2K 15 /* Windows 2000 EAP */ +#define EAPT_ARCOT 16 /* Arcot Systems */ +#define EAPT_CISCOWIRELESS 17 /* Cisco Wireless */ +#define EAPT_NOKIACARD 18 /* Nokia IP smart card */ +#define EAPT_SRP 19 /* Secure Remote Password */ +/* 20 is deprecated */ + +/* EAP SRP-SHA1 Subtypes */ +#define EAPSRP_CHALLENGE 1 /* Request 1 - Challenge */ +#define EAPSRP_CKEY 1 /* Response 1 - Client Key */ +#define EAPSRP_SKEY 2 /* Request 2 - Server Key */ +#define EAPSRP_CVALIDATOR 2 /* Response 2 - Client Validator */ +#define EAPSRP_SVALIDATOR 3 /* Request 3 - Server Validator */ +#define EAPSRP_ACK 3 /* Response 3 - final ack */ +#define EAPSRP_LWRECHALLENGE 4 /* Req/resp 4 - Lightweight rechal */ + +#define SRPVAL_EBIT 0x00000001 /* Use shared key for ECP */ + +#define SRP_PSEUDO_ID "pseudo_" +#define SRP_PSEUDO_LEN 7 + +#define MD5_SIGNATURE_SIZE 16 +#define EAP_MIN_CHALLENGE_LENGTH 17 +#define EAP_MAX_CHALLENGE_LENGTH 24 +#define EAP_MIN_MAX_POWER_OF_TWO_CHALLENGE_LENGTH 3 /* 2^3-1 = 7, 17+7 = 24 */ + +#define EAP_STATES \ + "Initial", "Pending", "Closed", "Listen", "Identify", \ + "SRP1", "SRP2", "SRP3", "MD5Chall", "Open", "SRP4", "BadAuth" + +#define eap_client_active(pcb) ((pcb)->eap.es_client.ea_state == eapListen) +#if PPP_SERVER +#define eap_server_active(pcb) \ + ((pcb)->eap.es_server.ea_state >= eapIdentify && \ + (pcb)->eap.es_server.ea_state <= eapMD5Chall) +#endif /* PPP_SERVER */ + +/* + * Complete EAP state for one PPP session. + */ +enum eap_state_code { + eapInitial = 0, /* No EAP authentication yet requested */ + eapPending, /* Waiting for LCP (no timer) */ + eapClosed, /* Authentication not in use */ + eapListen, /* Client ready (and timer running) */ + eapIdentify, /* EAP Identify sent */ + eapSRP1, /* Sent EAP SRP-SHA1 Subtype 1 */ + eapSRP2, /* Sent EAP SRP-SHA1 Subtype 2 */ + eapSRP3, /* Sent EAP SRP-SHA1 Subtype 3 */ + eapMD5Chall, /* Sent MD5-Challenge */ + eapOpen, /* Completed authentication */ + eapSRP4, /* Sent EAP SRP-SHA1 Subtype 4 */ + eapBadAuth /* Failed authentication */ +}; + +struct eap_auth { + const char *ea_name; /* Our name */ + char ea_peer[MAXNAMELEN +1]; /* Peer's name */ + void *ea_session; /* Authentication library linkage */ + u_char *ea_skey; /* Shared encryption key */ + u_short ea_namelen; /* Length of our name */ + u_short ea_peerlen; /* Length of peer's name */ + enum eap_state_code ea_state; + u_char ea_id; /* Current id */ + u_char ea_requests; /* Number of Requests sent/received */ + u_char ea_responses; /* Number of Responses */ + u_char ea_type; /* One of EAPT_* */ + u32_t ea_keyflags; /* SRP shared key usage flags */ +}; + +#ifndef EAP_MAX_CHALLENGE_LENGTH +#define EAP_MAX_CHALLENGE_LENGTH 24 +#endif +typedef struct eap_state { + struct eap_auth es_client; /* Client (authenticatee) data */ +#if PPP_SERVER + struct eap_auth es_server; /* Server (authenticator) data */ +#endif /* PPP_SERVER */ + int es_savedtime; /* Saved timeout */ + int es_rechallenge; /* EAP rechallenge interval */ + int es_lwrechallenge; /* SRP lightweight rechallenge inter */ + u8_t es_usepseudo; /* Use SRP Pseudonym if offered one */ + int es_usedpseudo; /* Set if we already sent PN */ + int es_challen; /* Length of challenge string */ + u_char es_challenge[EAP_MAX_CHALLENGE_LENGTH]; +} eap_state; + +/* + * Timeouts. + */ +#if 0 /* moved to ppp_opts.h */ +#define EAP_DEFTIMEOUT 3 /* Timeout (seconds) for rexmit */ +#define EAP_DEFTRANSMITS 10 /* max # times to transmit */ +#define EAP_DEFREQTIME 20 /* Time to wait for peer request */ +#define EAP_DEFALLOWREQ 20 /* max # times to accept requests */ +#endif /* moved to ppp_opts.h */ + +void eap_authwithpeer(ppp_pcb *pcb, const char *localname); +void eap_authpeer(ppp_pcb *pcb, const char *localname); + +extern const struct protent eap_protent; + +#ifdef __cplusplus +} +#endif + +#endif /* PPP_EAP_H */ + +#endif /* PPP_SUPPORT && EAP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/ecp.h b/Other/tun2socks/core/c/include/netif/ppp/ecp.h new file mode 100644 index 0000000..d8808c3 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/ecp.h @@ -0,0 +1,62 @@ +/* + * ecp.h - Definitions for PPP Encryption Control Protocol. + * + * Copyright (c) 2002 Google, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name(s) of the authors of this software must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: ecp.h,v 1.2 2003/01/10 07:12:36 fcusack Exp $ + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && ECP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef ECP_H +#define ECP_H + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct ecp_options { + bool required; /* Is ECP required? */ + unsigned enctype; /* Encryption type */ +} ecp_options; + +extern fsm ecp_fsm[]; +extern ecp_options ecp_wantoptions[]; +extern ecp_options ecp_gotoptions[]; +extern ecp_options ecp_allowoptions[]; +extern ecp_options ecp_hisoptions[]; + +extern const struct protent ecp_protent; + +#ifdef __cplusplus +} +#endif + +#endif /* ECP_H */ +#endif /* PPP_SUPPORT && ECP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/eui64.h b/Other/tun2socks/core/c/include/netif/ppp/eui64.h new file mode 100644 index 0000000..5adeb48 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/eui64.h @@ -0,0 +1,102 @@ +/* + * eui64.h - EUI64 routines for IPv6CP. + * + * Copyright (c) 1999 Tommi Komulainen. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name(s) of the authors of this software must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * 4. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Tommi Komulainen + * ". + * + * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: eui64.h,v 1.6 2002/12/04 23:03:32 paulus Exp $ +*/ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && PPP_IPV6_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef EUI64_H +#define EUI64_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * @todo: + * + * Maybe this should be done by processing struct in6_addr directly... + */ +typedef union +{ + u8_t e8[8]; + u16_t e16[4]; + u32_t e32[2]; +} eui64_t; + +#define eui64_iszero(e) (((e).e32[0] | (e).e32[1]) == 0) +#define eui64_equals(e, o) (((e).e32[0] == (o).e32[0]) && \ + ((e).e32[1] == (o).e32[1])) +#define eui64_zero(e) (e).e32[0] = (e).e32[1] = 0; + +#define eui64_copy(s, d) memcpy(&(d), &(s), sizeof(eui64_t)) + +#define eui64_magic(e) do { \ + (e).e32[0] = magic(); \ + (e).e32[1] = magic(); \ + (e).e8[0] &= ~2; \ + } while (0) +#define eui64_magic_nz(x) do { \ + eui64_magic(x); \ + } while (eui64_iszero(x)) +#define eui64_magic_ne(x, y) do { \ + eui64_magic(x); \ + } while (eui64_equals(x, y)) + +#define eui64_get(ll, cp) do { \ + eui64_copy((*cp), (ll)); \ + (cp) += sizeof(eui64_t); \ + } while (0) + +#define eui64_put(ll, cp) do { \ + eui64_copy((ll), (*cp)); \ + (cp) += sizeof(eui64_t); \ + } while (0) + +#define eui64_set32(e, l) do { \ + (e).e32[0] = 0; \ + (e).e32[1] = lwip_htonl(l); \ + } while (0) +#define eui64_setlo32(e, l) eui64_set32(e, l) + +char *eui64_ntoa(eui64_t); /* Returns ascii representation of id */ + +#ifdef __cplusplus +} +#endif + +#endif /* EUI64_H */ +#endif /* PPP_SUPPORT && PPP_IPV6_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/fsm.h b/Other/tun2socks/core/c/include/netif/ppp/fsm.h new file mode 100644 index 0000000..8dec700 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/fsm.h @@ -0,0 +1,182 @@ +/* + * fsm.h - {Link, IP} Control Protocol Finite State Machine definitions. + * + * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name "Carnegie Mellon University" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For permission or any legal + * details, please contact + * Office of Technology Transfer + * Carnegie Mellon University + * 5000 Forbes Avenue + * Pittsburgh, PA 15213-3890 + * (412) 268-4387, fax: (412) 268-7395 + * tech-transfer@andrew.cmu.edu + * + * 4. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Computing Services + * at Carnegie Mellon University (http://www.cmu.edu/computing/)." + * + * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE + * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: fsm.h,v 1.10 2004/11/13 02:28:15 paulus Exp $ + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef FSM_H +#define FSM_H + +#include "ppp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Packet header = Code, id, length. + */ +#define HEADERLEN 4 + + +/* + * CP (LCP, IPCP, etc.) codes. + */ +#define CONFREQ 1 /* Configuration Request */ +#define CONFACK 2 /* Configuration Ack */ +#define CONFNAK 3 /* Configuration Nak */ +#define CONFREJ 4 /* Configuration Reject */ +#define TERMREQ 5 /* Termination Request */ +#define TERMACK 6 /* Termination Ack */ +#define CODEREJ 7 /* Code Reject */ + + +/* + * Each FSM is described by an fsm structure and fsm callbacks. + */ +typedef struct fsm { + ppp_pcb *pcb; /* PPP Interface */ + const struct fsm_callbacks *callbacks; /* Callback routines */ + const char *term_reason; /* Reason for closing protocol */ + u8_t seen_ack; /* Have received valid Ack/Nak/Rej to Req */ + /* -- This is our only flag, we might use u_int :1 if we have more flags */ + u16_t protocol; /* Data Link Layer Protocol field value */ + u8_t state; /* State */ + u8_t flags; /* Contains option bits */ + u8_t id; /* Current id */ + u8_t reqid; /* Current request id */ + u8_t retransmits; /* Number of retransmissions left */ + u8_t nakloops; /* Number of nak loops since last ack */ + u8_t rnakloops; /* Number of naks received */ + u8_t maxnakloops; /* Maximum number of nak loops tolerated + (necessary because IPCP require a custom large max nak loops value) */ + u8_t term_reason_len; /* Length of term_reason */ +} fsm; + + +typedef struct fsm_callbacks { + void (*resetci) /* Reset our Configuration Information */ + (fsm *); + int (*cilen) /* Length of our Configuration Information */ + (fsm *); + void (*addci) /* Add our Configuration Information */ + (fsm *, u_char *, int *); + int (*ackci) /* ACK our Configuration Information */ + (fsm *, u_char *, int); + int (*nakci) /* NAK our Configuration Information */ + (fsm *, u_char *, int, int); + int (*rejci) /* Reject our Configuration Information */ + (fsm *, u_char *, int); + int (*reqci) /* Request peer's Configuration Information */ + (fsm *, u_char *, int *, int); + void (*up) /* Called when fsm reaches PPP_FSM_OPENED state */ + (fsm *); + void (*down) /* Called when fsm leaves PPP_FSM_OPENED state */ + (fsm *); + void (*starting) /* Called when we want the lower layer */ + (fsm *); + void (*finished) /* Called when we don't want the lower layer */ + (fsm *); + void (*protreject) /* Called when Protocol-Reject received */ + (int); + void (*retransmit) /* Retransmission is necessary */ + (fsm *); + int (*extcode) /* Called when unknown code received */ + (fsm *, int, int, u_char *, int); + const char *proto_name; /* String name for protocol (for messages) */ +} fsm_callbacks; + + +/* + * Link states. + */ +#define PPP_FSM_INITIAL 0 /* Down, hasn't been opened */ +#define PPP_FSM_STARTING 1 /* Down, been opened */ +#define PPP_FSM_CLOSED 2 /* Up, hasn't been opened */ +#define PPP_FSM_STOPPED 3 /* Open, waiting for down event */ +#define PPP_FSM_CLOSING 4 /* Terminating the connection, not open */ +#define PPP_FSM_STOPPING 5 /* Terminating, but open */ +#define PPP_FSM_REQSENT 6 /* We've sent a Config Request */ +#define PPP_FSM_ACKRCVD 7 /* We've received a Config Ack */ +#define PPP_FSM_ACKSENT 8 /* We've sent a Config Ack */ +#define PPP_FSM_OPENED 9 /* Connection available */ + + +/* + * Flags - indicate options controlling FSM operation + */ +#define OPT_PASSIVE 1 /* Don't die if we don't get a response */ +#define OPT_RESTART 2 /* Treat 2nd OPEN as DOWN, UP */ +#define OPT_SILENT 4 /* Wait for peer to speak first */ + + +/* + * Timeouts. + */ +#if 0 /* moved to ppp_opts.h */ +#define DEFTIMEOUT 3 /* Timeout time in seconds */ +#define DEFMAXTERMREQS 2 /* Maximum Terminate-Request transmissions */ +#define DEFMAXCONFREQS 10 /* Maximum Configure-Request transmissions */ +#define DEFMAXNAKLOOPS 5 /* Maximum number of nak loops */ +#endif /* moved to ppp_opts.h */ + + +/* + * Prototypes + */ +void fsm_init(fsm *f); +void fsm_lowerup(fsm *f); +void fsm_lowerdown(fsm *f); +void fsm_open(fsm *f); +void fsm_close(fsm *f, const char *reason); +void fsm_input(fsm *f, u_char *inpacket, int l); +void fsm_protreject(fsm *f); +void fsm_sdata(fsm *f, u_char code, u_char id, const u_char *data, int datalen); + +#ifdef __cplusplus +} +#endif + +#endif /* FSM_H */ +#endif /* PPP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/ipcp.h b/Other/tun2socks/core/c/include/netif/ppp/ipcp.h new file mode 100644 index 0000000..32fdd1c --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/ipcp.h @@ -0,0 +1,134 @@ +/* + * ipcp.h - IP Control Protocol definitions. + * + * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name "Carnegie Mellon University" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For permission or any legal + * details, please contact + * Office of Technology Transfer + * Carnegie Mellon University + * 5000 Forbes Avenue + * Pittsburgh, PA 15213-3890 + * (412) 268-4387, fax: (412) 268-7395 + * tech-transfer@andrew.cmu.edu + * + * 4. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Computing Services + * at Carnegie Mellon University (http://www.cmu.edu/computing/)." + * + * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE + * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: ipcp.h,v 1.14 2002/12/04 23:03:32 paulus Exp $ + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && PPP_IPV4_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef IPCP_H +#define IPCP_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Options. + */ +#define CI_ADDRS 1 /* IP Addresses */ +#if VJ_SUPPORT +#define CI_COMPRESSTYPE 2 /* Compression Type */ +#endif /* VJ_SUPPORT */ +#define CI_ADDR 3 + +#if LWIP_DNS +#define CI_MS_DNS1 129 /* Primary DNS value */ +#define CI_MS_DNS2 131 /* Secondary DNS value */ +#endif /* LWIP_DNS */ +#if 0 /* UNUSED - WINS */ +#define CI_MS_WINS1 130 /* Primary WINS value */ +#define CI_MS_WINS2 132 /* Secondary WINS value */ +#endif /* UNUSED - WINS */ + +#if VJ_SUPPORT +#define MAX_STATES 16 /* from slcompress.h */ + +#define IPCP_VJMODE_OLD 1 /* "old" mode (option # = 0x0037) */ +#define IPCP_VJMODE_RFC1172 2 /* "old-rfc"mode (option # = 0x002d) */ +#define IPCP_VJMODE_RFC1332 3 /* "new-rfc"mode (option # = 0x002d, */ + /* maxslot and slot number compression) */ + +#define IPCP_VJ_COMP 0x002d /* current value for VJ compression option*/ +#define IPCP_VJ_COMP_OLD 0x0037 /* "old" (i.e, broken) value for VJ */ + /* compression option*/ +#endif /* VJ_SUPPORT */ + +typedef struct ipcp_options { + unsigned int neg_addr :1; /* Negotiate IP Address? */ + unsigned int old_addrs :1; /* Use old (IP-Addresses) option? */ + unsigned int req_addr :1; /* Ask peer to send IP address? */ +#if 0 /* UNUSED */ + unsigned int default_route :1; /* Assign default route through interface? */ + unsigned int replace_default_route :1; /* Replace default route through interface? */ +#endif /* UNUSED */ +#if 0 /* UNUSED - PROXY ARP */ + unsigned int proxy_arp :1; /* Make proxy ARP entry for peer? */ +#endif /* UNUSED - PROXY ARP */ +#if VJ_SUPPORT + unsigned int neg_vj :1; /* Van Jacobson Compression? */ + unsigned int old_vj :1; /* use old (short) form of VJ option? */ + unsigned int cflag :1; +#endif /* VJ_SUPPORT */ + unsigned int accept_local :1; /* accept peer's value for ouraddr */ + unsigned int accept_remote :1; /* accept peer's value for hisaddr */ +#if LWIP_DNS + unsigned int req_dns1 :1; /* Ask peer to send primary DNS address? */ + unsigned int req_dns2 :1; /* Ask peer to send secondary DNS address? */ +#endif /* LWIP_DNS */ + + u32_t ouraddr, hisaddr; /* Addresses in NETWORK BYTE ORDER */ +#if LWIP_DNS + u32_t dnsaddr[2]; /* Primary and secondary MS DNS entries */ +#endif /* LWIP_DNS */ +#if 0 /* UNUSED - WINS */ + u32_t winsaddr[2]; /* Primary and secondary MS WINS entries */ +#endif /* UNUSED - WINS */ + +#if VJ_SUPPORT + u16_t vj_protocol; /* protocol value to use in VJ option */ + u8_t maxslotindex; /* values for RFC1332 VJ compression neg. */ +#endif /* VJ_SUPPORT */ +} ipcp_options; + +#if 0 /* UNUSED, already defined by lwIP */ +char *ip_ntoa (u32_t); +#endif /* UNUSED, already defined by lwIP */ + +extern const struct protent ipcp_protent; + +#ifdef __cplusplus +} +#endif + +#endif /* IPCP_H */ +#endif /* PPP_SUPPORT && PPP_IPV4_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/ipv6cp.h b/Other/tun2socks/core/c/include/netif/ppp/ipv6cp.h new file mode 100644 index 0000000..9099973 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/ipv6cp.h @@ -0,0 +1,191 @@ +/* + * ipv6cp.h - PPP IPV6 Control Protocol. + * + * Copyright (c) 1999 Tommi Komulainen. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name(s) of the authors of this software must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * 4. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Tommi Komulainen + * ". + * + * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +/* Original version, based on RFC2023 : + + Copyright (c) 1995, 1996, 1997 Francis.Dupont@inria.fr, INRIA Rocquencourt, + Alain.Durand@imag.fr, IMAG, + Jean-Luc.Richier@imag.fr, IMAG-LSR. + + Copyright (c) 1998, 1999 Francis.Dupont@inria.fr, GIE DYADE, + Alain.Durand@imag.fr, IMAG, + Jean-Luc.Richier@imag.fr, IMAG-LSR. + + Ce travail a été fait au sein du GIE DYADE (Groupement d'Intérêt + Économique ayant pour membres BULL S.A. et l'INRIA). + + Ce logiciel informatique est disponible aux conditions + usuelles dans la recherche, c'est-à-dire qu'il peut + être utilisé, copié, modifié, distribué à l'unique + condition que ce texte soit conservé afin que + l'origine de ce logiciel soit reconnue. + + Le nom de l'Institut National de Recherche en Informatique + et en Automatique (INRIA), de l'IMAG, ou d'une personne morale + ou physique ayant participé à l'élaboration de ce logiciel ne peut + être utilisé sans son accord préalable explicite. + + Ce logiciel est fourni tel quel sans aucune garantie, + support ou responsabilité d'aucune sorte. + Ce logiciel est dérivé de sources d'origine + "University of California at Berkeley" et + "Digital Equipment Corporation" couvertes par des copyrights. + + L'Institut d'Informatique et de Mathématiques Appliquées de Grenoble (IMAG) + est une fédération d'unités mixtes de recherche du CNRS, de l'Institut National + Polytechnique de Grenoble et de l'Université Joseph Fourier regroupant + sept laboratoires dont le laboratoire Logiciels, Systèmes, Réseaux (LSR). + + This work has been done in the context of GIE DYADE (joint R & D venture + between BULL S.A. and INRIA). + + This software is available with usual "research" terms + with the aim of retain credits of the software. + Permission to use, copy, modify and distribute this software for any + purpose and without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies, + and the name of INRIA, IMAG, or any contributor not be used in advertising + or publicity pertaining to this material without the prior explicit + permission. The software is provided "as is" without any + warranties, support or liabilities of any kind. + This software is derived from source code from + "University of California at Berkeley" and + "Digital Equipment Corporation" protected by copyrights. + + Grenoble's Institute of Computer Science and Applied Mathematics (IMAG) + is a federation of seven research units funded by the CNRS, National + Polytechnic Institute of Grenoble and University Joseph Fourier. + The research unit in Software, Systems, Networks (LSR) is member of IMAG. +*/ + +/* + * Derived from : + * + * + * ipcp.h - IP Control Protocol definitions. + * + * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name "Carnegie Mellon University" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For permission or any legal + * details, please contact + * Office of Technology Transfer + * Carnegie Mellon University + * 5000 Forbes Avenue + * Pittsburgh, PA 15213-3890 + * (412) 268-4387, fax: (412) 268-7395 + * tech-transfer@andrew.cmu.edu + * + * 4. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Computing Services + * at Carnegie Mellon University (http://www.cmu.edu/computing/)." + * + * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE + * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: ipv6cp.h,v 1.7 2002/12/04 23:03:32 paulus Exp $ + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && PPP_IPV6_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef IPV6CP_H +#define IPV6CP_H + +#include "eui64.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Options. + */ +#define CI_IFACEID 1 /* Interface Identifier */ +#ifdef IPV6CP_COMP +#define CI_COMPRESSTYPE 2 /* Compression Type */ +#endif /* IPV6CP_COMP */ + +/* No compression types yet defined. + *#define IPV6CP_COMP 0x004f + */ +typedef struct ipv6cp_options { + unsigned int neg_ifaceid :1; /* Negotiate interface identifier? */ + unsigned int req_ifaceid :1; /* Ask peer to send interface identifier? */ + unsigned int accept_local :1; /* accept peer's value for iface id? */ + unsigned int opt_local :1; /* ourtoken set by option */ + unsigned int opt_remote :1; /* histoken set by option */ + unsigned int use_ip :1; /* use IP as interface identifier */ +#if 0 + unsigned int use_persistent :1; /* use uniquely persistent value for address */ +#endif +#ifdef IPV6CP_COMP + unsigned int neg_vj :1; /* Van Jacobson Compression? */ +#endif /* IPV6CP_COMP */ + +#ifdef IPV6CP_COMP + u_short vj_protocol; /* protocol value to use in VJ option */ +#endif /* IPV6CP_COMP */ + eui64_t ourid, hisid; /* Interface identifiers */ +} ipv6cp_options; + +extern const struct protent ipv6cp_protent; + +#ifdef __cplusplus +} +#endif + +#endif /* IPV6CP_H */ +#endif /* PPP_SUPPORT && PPP_IPV6_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/lcp.h b/Other/tun2socks/core/c/include/netif/ppp/lcp.h new file mode 100644 index 0000000..18ad1cb --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/lcp.h @@ -0,0 +1,179 @@ +/* + * lcp.h - Link Control Protocol definitions. + * + * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name "Carnegie Mellon University" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For permission or any legal + * details, please contact + * Office of Technology Transfer + * Carnegie Mellon University + * 5000 Forbes Avenue + * Pittsburgh, PA 15213-3890 + * (412) 268-4387, fax: (412) 268-7395 + * tech-transfer@andrew.cmu.edu + * + * 4. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Computing Services + * at Carnegie Mellon University (http://www.cmu.edu/computing/)." + * + * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE + * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: lcp.h,v 1.20 2004/11/14 22:53:42 carlsonj Exp $ + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef LCP_H +#define LCP_H + +#include "ppp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Options. + */ +#define CI_VENDOR 0 /* Vendor Specific */ +#define CI_MRU 1 /* Maximum Receive Unit */ +#define CI_ASYNCMAP 2 /* Async Control Character Map */ +#define CI_AUTHTYPE 3 /* Authentication Type */ +#define CI_QUALITY 4 /* Quality Protocol */ +#define CI_MAGICNUMBER 5 /* Magic Number */ +#define CI_PCOMPRESSION 7 /* Protocol Field Compression */ +#define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */ +#define CI_FCSALTERN 9 /* FCS-Alternatives */ +#define CI_SDP 10 /* Self-Describing-Pad */ +#define CI_NUMBERED 11 /* Numbered-Mode */ +#define CI_CALLBACK 13 /* callback */ +#define CI_MRRU 17 /* max reconstructed receive unit; multilink */ +#define CI_SSNHF 18 /* short sequence numbers for multilink */ +#define CI_EPDISC 19 /* endpoint discriminator */ +#define CI_MPPLUS 22 /* Multi-Link-Plus-Procedure */ +#define CI_LDISC 23 /* Link-Discriminator */ +#define CI_LCPAUTH 24 /* LCP Authentication */ +#define CI_COBS 25 /* Consistent Overhead Byte Stuffing */ +#define CI_PREFELIS 26 /* Prefix Elision */ +#define CI_MPHDRFMT 27 /* MP Header Format */ +#define CI_I18N 28 /* Internationalization */ +#define CI_SDL 29 /* Simple Data Link */ + +/* + * LCP-specific packet types (code numbers). + */ +#define PROTREJ 8 /* Protocol Reject */ +#define ECHOREQ 9 /* Echo Request */ +#define ECHOREP 10 /* Echo Reply */ +#define DISCREQ 11 /* Discard Request */ +#define IDENTIF 12 /* Identification */ +#define TIMEREM 13 /* Time Remaining */ + +/* Value used as data for CI_CALLBACK option */ +#define CBCP_OPT 6 /* Use callback control protocol */ + +#if 0 /* moved to ppp_opts.h */ +#define DEFMRU 1500 /* Try for this */ +#define MINMRU 128 /* No MRUs below this */ +#define MAXMRU 16384 /* Normally limit MRU to this */ +#endif /* moved to ppp_opts.h */ + +/* An endpoint discriminator, used with multilink. */ +#define MAX_ENDP_LEN 20 /* maximum length of discriminator value */ +struct epdisc { + unsigned char class_; /* -- The word "class" is reserved in C++. */ + unsigned char length; + unsigned char value[MAX_ENDP_LEN]; +}; + +/* + * The state of options is described by an lcp_options structure. + */ +typedef struct lcp_options { + unsigned int passive :1; /* Don't die if we don't get a response */ + unsigned int silent :1; /* Wait for the other end to start first */ +#if 0 /* UNUSED */ + unsigned int restart :1; /* Restart vs. exit after close */ +#endif /* UNUSED */ + unsigned int neg_mru :1; /* Negotiate the MRU? */ + unsigned int neg_asyncmap :1; /* Negotiate the async map? */ +#if PAP_SUPPORT + unsigned int neg_upap :1; /* Ask for UPAP authentication? */ +#endif /* PAP_SUPPORT */ +#if CHAP_SUPPORT + unsigned int neg_chap :1; /* Ask for CHAP authentication? */ +#endif /* CHAP_SUPPORT */ +#if EAP_SUPPORT + unsigned int neg_eap :1; /* Ask for EAP authentication? */ +#endif /* EAP_SUPPORT */ + unsigned int neg_magicnumber :1; /* Ask for magic number? */ + unsigned int neg_pcompression :1; /* HDLC Protocol Field Compression? */ + unsigned int neg_accompression :1; /* HDLC Address/Control Field Compression? */ +#if LQR_SUPPORT + unsigned int neg_lqr :1; /* Negotiate use of Link Quality Reports */ +#endif /* LQR_SUPPORT */ + unsigned int neg_cbcp :1; /* Negotiate use of CBCP */ +#ifdef HAVE_MULTILINK + unsigned int neg_mrru :1; /* negotiate multilink MRRU */ +#endif /* HAVE_MULTILINK */ + unsigned int neg_ssnhf :1; /* negotiate short sequence numbers */ + unsigned int neg_endpoint :1; /* negotiate endpoint discriminator */ + + u16_t mru; /* Value of MRU */ +#ifdef HAVE_MULTILINK + u16_t mrru; /* Value of MRRU, and multilink enable */ +#endif /* MULTILINK */ +#if CHAP_SUPPORT + u8_t chap_mdtype; /* which MD types (hashing algorithm) */ +#endif /* CHAP_SUPPORT */ + u32_t asyncmap; /* Value of async map */ + u32_t magicnumber; + u8_t numloops; /* Number of loops during magic number neg. */ +#if LQR_SUPPORT + u32_t lqr_period; /* Reporting period for LQR 1/100ths second */ +#endif /* LQR_SUPPORT */ + struct epdisc endpoint; /* endpoint discriminator */ +} lcp_options; + +void lcp_open(ppp_pcb *pcb); +void lcp_close(ppp_pcb *pcb, const char *reason); +void lcp_lowerup(ppp_pcb *pcb); +void lcp_lowerdown(ppp_pcb *pcb); +void lcp_sprotrej(ppp_pcb *pcb, u_char *p, int len); /* send protocol reject */ + +extern const struct protent lcp_protent; + +#if 0 /* moved to ppp_opts.h */ +/* Default number of times we receive our magic number from the peer + before deciding the link is looped-back. */ +#define DEFLOOPBACKFAIL 10 +#endif /* moved to ppp_opts.h */ + +#ifdef __cplusplus +} +#endif + +#endif /* LCP_H */ +#endif /* PPP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/magic.h b/Other/tun2socks/core/c/include/netif/ppp/magic.h new file mode 100644 index 0000000..a165e18 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/magic.h @@ -0,0 +1,130 @@ +/* + * magic.h - PPP Magic Number definitions. + * + * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name "Carnegie Mellon University" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For permission or any legal + * details, please contact + * Office of Technology Transfer + * Carnegie Mellon University + * 5000 Forbes Avenue + * Pittsburgh, PA 15213-3890 + * (412) 268-4387, fax: (412) 268-7395 + * tech-transfer@andrew.cmu.edu + * + * 4. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Computing Services + * at Carnegie Mellon University (http://www.cmu.edu/computing/)." + * + * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE + * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: magic.h,v 1.5 2003/06/11 23:56:26 paulus Exp $ + */ +/***************************************************************************** +* randm.h - Random number generator header file. +* +* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. +* Copyright (c) 1998 Global Election Systems Inc. +* +* The authors hereby grant permission to use, copy, modify, distribute, +* and license this software and its documentation for any purpose, provided +* that existing copyright notices are retained in all copies and that this +* notice and the following disclaimer are included verbatim in any +* distributions. No written agreement, license, or royalty fee is required +* for any of the authorized uses. +* +* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR +* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +****************************************************************************** +* REVISION HISTORY +* +* 03-01-01 Marc Boucher +* Ported to lwIP. +* 98-05-29 Guy Lancaster , Global Election Systems Inc. +* Extracted from avos. +*****************************************************************************/ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef MAGIC_H +#define MAGIC_H + +#ifdef __cplusplus +extern "C" { +#endif + +/*********************** +*** PUBLIC FUNCTIONS *** +***********************/ + +/* + * Initialize the random number generator. + */ +void magic_init(void); + +/* + * Randomize our random seed value. To be called for truely random events + * such as user operations and network traffic. + */ +void magic_randomize(void); + +/* + * Return a new random number. + */ +u32_t magic(void); /* Returns the next magic number */ + +/* + * Fill buffer with random bytes + * + * Use the random pool to generate random data. This degrades to pseudo + * random when used faster than randomness is supplied using magic_churnrand(). + * Thus it's important to make sure that the results of this are not + * published directly because one could predict the next result to at + * least some degree. Also, it's important to get a good seed before + * the first use. + */ +void magic_random_bytes(unsigned char *buf, u32_t buf_len); + +/* + * Return a new random number between 0 and (2^pow)-1 included. + */ +u32_t magic_pow(u8_t pow); + +#ifdef __cplusplus +} +#endif + +#endif /* MAGIC_H */ + +#endif /* PPP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/mppe.h b/Other/tun2socks/core/c/include/netif/ppp/mppe.h new file mode 100644 index 0000000..5de1128 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/mppe.h @@ -0,0 +1,181 @@ +/* + * mppe.h - Definitions for MPPE + * + * Copyright (c) 2008 Paul Mackerras. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name(s) of the authors of this software must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * 4. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Paul Mackerras + * ". + * + * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && MPPE_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef MPPE_H +#define MPPE_H + +#include "netif/ppp/pppcrypt.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define MPPE_PAD 4 /* MPPE growth per frame */ +#define MPPE_MAX_KEY_LEN 16 /* largest key length (128-bit) */ + +/* option bits for ccp_options.mppe */ +#define MPPE_OPT_40 0x01 /* 40 bit */ +#define MPPE_OPT_128 0x02 /* 128 bit */ +#define MPPE_OPT_STATEFUL 0x04 /* stateful mode */ +/* unsupported opts */ +#define MPPE_OPT_56 0x08 /* 56 bit */ +#define MPPE_OPT_MPPC 0x10 /* MPPC compression */ +#define MPPE_OPT_D 0x20 /* Unknown */ +#define MPPE_OPT_UNSUPPORTED (MPPE_OPT_56|MPPE_OPT_MPPC|MPPE_OPT_D) +#define MPPE_OPT_UNKNOWN 0x40 /* Bits !defined in RFC 3078 were set */ + +/* + * This is not nice ... the alternative is a bitfield struct though. + * And unfortunately, we cannot share the same bits for the option + * names above since C and H are the same bit. We could do a u_int32 + * but then we have to do a lwip_htonl() all the time and/or we still need + * to know which octet is which. + */ +#define MPPE_C_BIT 0x01 /* MPPC */ +#define MPPE_D_BIT 0x10 /* Obsolete, usage unknown */ +#define MPPE_L_BIT 0x20 /* 40-bit */ +#define MPPE_S_BIT 0x40 /* 128-bit */ +#define MPPE_M_BIT 0x80 /* 56-bit, not supported */ +#define MPPE_H_BIT 0x01 /* Stateless (in a different byte) */ + +/* Does not include H bit; used for least significant octet only. */ +#define MPPE_ALL_BITS (MPPE_D_BIT|MPPE_L_BIT|MPPE_S_BIT|MPPE_M_BIT|MPPE_H_BIT) + +/* Build a CI from mppe opts (see RFC 3078) */ +#define MPPE_OPTS_TO_CI(opts, ci) \ + do { \ + u_char *ptr = ci; /* u_char[4] */ \ + \ + /* H bit */ \ + if (opts & MPPE_OPT_STATEFUL) \ + *ptr++ = 0x0; \ + else \ + *ptr++ = MPPE_H_BIT; \ + *ptr++ = 0; \ + *ptr++ = 0; \ + \ + /* S,L bits */ \ + *ptr = 0; \ + if (opts & MPPE_OPT_128) \ + *ptr |= MPPE_S_BIT; \ + if (opts & MPPE_OPT_40) \ + *ptr |= MPPE_L_BIT; \ + /* M,D,C bits not supported */ \ + } while (/* CONSTCOND */ 0) + +/* The reverse of the above */ +#define MPPE_CI_TO_OPTS(ci, opts) \ + do { \ + const u_char *ptr = ci; /* u_char[4] */ \ + \ + opts = 0; \ + \ + /* H bit */ \ + if (!(ptr[0] & MPPE_H_BIT)) \ + opts |= MPPE_OPT_STATEFUL; \ + \ + /* S,L bits */ \ + if (ptr[3] & MPPE_S_BIT) \ + opts |= MPPE_OPT_128; \ + if (ptr[3] & MPPE_L_BIT) \ + opts |= MPPE_OPT_40; \ + \ + /* M,D,C bits */ \ + if (ptr[3] & MPPE_M_BIT) \ + opts |= MPPE_OPT_56; \ + if (ptr[3] & MPPE_D_BIT) \ + opts |= MPPE_OPT_D; \ + if (ptr[3] & MPPE_C_BIT) \ + opts |= MPPE_OPT_MPPC; \ + \ + /* Other bits */ \ + if (ptr[0] & ~MPPE_H_BIT) \ + opts |= MPPE_OPT_UNKNOWN; \ + if (ptr[1] || ptr[2]) \ + opts |= MPPE_OPT_UNKNOWN; \ + if (ptr[3] & ~MPPE_ALL_BITS) \ + opts |= MPPE_OPT_UNKNOWN; \ + } while (/* CONSTCOND */ 0) + +/* Shared MPPE padding between MSCHAP and MPPE */ +#define SHA1_PAD_SIZE 40 + +static const u8_t mppe_sha1_pad1[SHA1_PAD_SIZE] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; +static const u8_t mppe_sha1_pad2[SHA1_PAD_SIZE] = { + 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, + 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, + 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, + 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2 +}; + +/* + * State for an MPPE (de)compressor. + */ +typedef struct ppp_mppe_state { + lwip_arc4_context arc4; + u8_t master_key[MPPE_MAX_KEY_LEN]; + u8_t session_key[MPPE_MAX_KEY_LEN]; + u8_t keylen; /* key length in bytes */ + /* NB: 128-bit == 16, 40-bit == 8! + * If we want to support 56-bit, the unit has to change to bits + */ + u8_t bits; /* MPPE control bits */ + u16_t ccount; /* 12-bit coherency count (seqno) */ + u16_t sanity_errors; /* take down LCP if too many */ + unsigned int stateful :1; /* stateful mode flag */ + unsigned int discard :1; /* stateful mode packet loss flag */ +} ppp_mppe_state; + +void mppe_set_key(ppp_pcb *pcb, ppp_mppe_state *state, u8_t *key); +void mppe_init(ppp_pcb *pcb, ppp_mppe_state *state, u8_t options); +void mppe_comp_reset(ppp_pcb *pcb, ppp_mppe_state *state); +err_t mppe_compress(ppp_pcb *pcb, ppp_mppe_state *state, struct pbuf **pb, u16_t protocol); +void mppe_decomp_reset(ppp_pcb *pcb, ppp_mppe_state *state); +err_t mppe_decompress(ppp_pcb *pcb, ppp_mppe_state *state, struct pbuf **pb); + +#ifdef __cplusplus +} +#endif + +#endif /* MPPE_H */ +#endif /* PPP_SUPPORT && MPPE_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/polarssl/arc4.h b/Other/tun2socks/core/c/include/netif/ppp/polarssl/arc4.h new file mode 100644 index 0000000..4af724c --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/polarssl/arc4.h @@ -0,0 +1,81 @@ +/** + * \file arc4.h + * + * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine + * + * Copyright (C) 2009 Paul Bakker + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the names of PolarSSL or XySSL nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "netif/ppp/ppp_opts.h" +#if LWIP_INCLUDED_POLARSSL_ARC4 + +#ifndef LWIP_INCLUDED_POLARSSL_ARC4_H +#define LWIP_INCLUDED_POLARSSL_ARC4_H + +/** + * \brief ARC4 context structure + */ +typedef struct +{ + int x; /*!< permutation index */ + int y; /*!< permutation index */ + unsigned char m[256]; /*!< permutation table */ +} +arc4_context; + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief ARC4 key schedule + * + * \param ctx ARC4 context to be initialized + * \param key the secret key + * \param keylen length of the key + */ +void arc4_setup( arc4_context *ctx, unsigned char *key, int keylen ); + +/** + * \brief ARC4 cipher function + * + * \param ctx ARC4 context + * \param buf buffer to be processed + * \param buflen amount of data in buf + */ +void arc4_crypt( arc4_context *ctx, unsigned char *buf, int buflen ); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_INCLUDED_POLARSSL_ARC4_H */ + +#endif /* LWIP_INCLUDED_POLARSSL_ARC4 */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/polarssl/des.h b/Other/tun2socks/core/c/include/netif/ppp/polarssl/des.h new file mode 100644 index 0000000..e893890 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/polarssl/des.h @@ -0,0 +1,92 @@ +/** + * \file des.h + * + * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine + * + * Copyright (C) 2009 Paul Bakker + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the names of PolarSSL or XySSL nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "netif/ppp/ppp_opts.h" +#if LWIP_INCLUDED_POLARSSL_DES + +#ifndef LWIP_INCLUDED_POLARSSL_DES_H +#define LWIP_INCLUDED_POLARSSL_DES_H + +#define DES_ENCRYPT 1 +#define DES_DECRYPT 0 + +/** + * \brief DES context structure + */ +typedef struct +{ + int mode; /*!< encrypt/decrypt */ + unsigned long sk[32]; /*!< DES subkeys */ +} +des_context; + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief DES key schedule (56-bit, encryption) + * + * \param ctx DES context to be initialized + * \param key 8-byte secret key + */ +void des_setkey_enc( des_context *ctx, unsigned char key[8] ); + +/** + * \brief DES key schedule (56-bit, decryption) + * + * \param ctx DES context to be initialized + * \param key 8-byte secret key + */ +void des_setkey_dec( des_context *ctx, unsigned char key[8] ); + +/** + * \brief DES-ECB block encryption/decryption + * + * \param ctx DES context + * \param input 64-bit input block + * \param output 64-bit output block + */ +void des_crypt_ecb( des_context *ctx, + const unsigned char input[8], + unsigned char output[8] ); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_INCLUDED_POLARSSL_DES_H */ + +#endif /* LWIP_INCLUDED_POLARSSL_DES */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/polarssl/md4.h b/Other/tun2socks/core/c/include/netif/ppp/polarssl/md4.h new file mode 100644 index 0000000..5704456 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/polarssl/md4.h @@ -0,0 +1,97 @@ +/** + * \file md4.h + * + * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine + * + * Copyright (C) 2009 Paul Bakker + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the names of PolarSSL or XySSL nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "netif/ppp/ppp_opts.h" +#if LWIP_INCLUDED_POLARSSL_MD4 + +#ifndef LWIP_INCLUDED_POLARSSL_MD4_H +#define LWIP_INCLUDED_POLARSSL_MD4_H + +/** + * \brief MD4 context structure + */ +typedef struct +{ + unsigned long total[2]; /*!< number of bytes processed */ + unsigned long state[4]; /*!< intermediate digest state */ + unsigned char buffer[64]; /*!< data block being processed */ +} +md4_context; + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief MD4 context setup + * + * \param ctx context to be initialized + */ +void md4_starts( md4_context *ctx ); + +/** + * \brief MD4 process buffer + * + * \param ctx MD4 context + * \param input buffer holding the data + * \param ilen length of the input data + */ +void md4_update( md4_context *ctx, const unsigned char *input, int ilen ); + +/** + * \brief MD4 final digest + * + * \param ctx MD4 context + * \param output MD4 checksum result + */ +void md4_finish( md4_context *ctx, unsigned char output[16] ); + +/** + * \brief Output = MD4( input buffer ) + * + * \param input buffer holding the data + * \param ilen length of the input data + * \param output MD4 checksum result + */ +void md4( unsigned char *input, int ilen, unsigned char output[16] ); + + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_INCLUDED_POLARSSL_MD4_H */ + +#endif /* LWIP_INCLUDED_POLARSSL_MD4 */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/polarssl/md5.h b/Other/tun2socks/core/c/include/netif/ppp/polarssl/md5.h new file mode 100644 index 0000000..1244011 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/polarssl/md5.h @@ -0,0 +1,96 @@ +/** + * \file md5.h + * + * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine + * + * Copyright (C) 2009 Paul Bakker + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the names of PolarSSL or XySSL nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "netif/ppp/ppp_opts.h" +#if LWIP_INCLUDED_POLARSSL_MD5 + +#ifndef LWIP_INCLUDED_POLARSSL_MD5_H +#define LWIP_INCLUDED_POLARSSL_MD5_H + +/** + * \brief MD5 context structure + */ +typedef struct +{ + unsigned long total[2]; /*!< number of bytes processed */ + unsigned long state[4]; /*!< intermediate digest state */ + unsigned char buffer[64]; /*!< data block being processed */ +} +md5_context; + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief MD5 context setup + * + * \param ctx context to be initialized + */ +void md5_starts( md5_context *ctx ); + +/** + * \brief MD5 process buffer + * + * \param ctx MD5 context + * \param input buffer holding the data + * \param ilen length of the input data + */ +void md5_update( md5_context *ctx, const unsigned char *input, int ilen ); + +/** + * \brief MD5 final digest + * + * \param ctx MD5 context + * \param output MD5 checksum result + */ +void md5_finish( md5_context *ctx, unsigned char output[16] ); + +/** + * \brief Output = MD5( input buffer ) + * + * \param input buffer holding the data + * \param ilen length of the input data + * \param output MD5 checksum result + */ +void md5( unsigned char *input, int ilen, unsigned char output[16] ); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_INCLUDED_POLARSSL_MD5_H */ + +#endif /* LWIP_INCLUDED_POLARSSL_MD5 */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/polarssl/sha1.h b/Other/tun2socks/core/c/include/netif/ppp/polarssl/sha1.h new file mode 100644 index 0000000..a4c53e0 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/polarssl/sha1.h @@ -0,0 +1,96 @@ +/** + * \file sha1.h + * + * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine + * + * Copyright (C) 2009 Paul Bakker + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the names of PolarSSL or XySSL nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "netif/ppp/ppp_opts.h" +#if LWIP_INCLUDED_POLARSSL_SHA1 + +#ifndef LWIP_INCLUDED_POLARSSL_SHA1_H +#define LWIP_INCLUDED_POLARSSL_SHA1_H + +/** + * \brief SHA-1 context structure + */ +typedef struct +{ + unsigned long total[2]; /*!< number of bytes processed */ + unsigned long state[5]; /*!< intermediate digest state */ + unsigned char buffer[64]; /*!< data block being processed */ +} +sha1_context; + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief SHA-1 context setup + * + * \param ctx context to be initialized + */ +void sha1_starts( sha1_context *ctx ); + +/** + * \brief SHA-1 process buffer + * + * \param ctx SHA-1 context + * \param input buffer holding the data + * \param ilen length of the input data + */ +void sha1_update( sha1_context *ctx, const unsigned char *input, int ilen ); + +/** + * \brief SHA-1 final digest + * + * \param ctx SHA-1 context + * \param output SHA-1 checksum result + */ +void sha1_finish( sha1_context *ctx, unsigned char output[20] ); + +/** + * \brief Output = SHA-1( input buffer ) + * + * \param input buffer holding the data + * \param ilen length of the input data + * \param output SHA-1 checksum result + */ +void sha1( unsigned char *input, int ilen, unsigned char output[20] ); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_INCLUDED_POLARSSL_SHA1_H */ + +#endif /* LWIP_INCLUDED_POLARSSL_SHA1 */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/ppp.h b/Other/tun2socks/core/c/include/netif/ppp/ppp.h new file mode 100644 index 0000000..3d73c36 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/ppp.h @@ -0,0 +1,698 @@ +/***************************************************************************** +* ppp.h - Network Point to Point Protocol header file. +* +* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. +* portions Copyright (c) 1997 Global Election Systems Inc. +* +* The authors hereby grant permission to use, copy, modify, distribute, +* and license this software and its documentation for any purpose, provided +* that existing copyright notices are retained in all copies and that this +* notice and the following disclaimer are included verbatim in any +* distributions. No written agreement, license, or royalty fee is required +* for any of the authorized uses. +* +* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR +* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +****************************************************************************** +* REVISION HISTORY +* +* 03-01-01 Marc Boucher +* Ported to lwIP. +* 97-11-05 Guy Lancaster , Global Election Systems Inc. +* Original derived from BSD codes. +*****************************************************************************/ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef PPP_H +#define PPP_H + +#include "lwip/def.h" +#include "lwip/stats.h" +#include "lwip/mem.h" +#include "lwip/netif.h" +#include "lwip/sys.h" +#include "lwip/timeouts.h" +#if PPP_IPV6_SUPPORT +#include "lwip/ip6_addr.h" +#endif /* PPP_IPV6_SUPPORT */ + +#ifdef __cplusplus +extern "C" { +#endif + +/* Disable non-working or rarely used PPP feature, so rarely that we don't want to bloat ppp_opts.h with them */ +#ifndef PPP_OPTIONS +#define PPP_OPTIONS 0 +#endif + +#ifndef PPP_NOTIFY +#define PPP_NOTIFY 0 +#endif + +#ifndef PPP_REMOTENAME +#define PPP_REMOTENAME 0 +#endif + +#ifndef PPP_IDLETIMELIMIT +#define PPP_IDLETIMELIMIT 0 +#endif + +#ifndef PPP_LCP_ADAPTIVE +#define PPP_LCP_ADAPTIVE 0 +#endif + +#ifndef PPP_MAXCONNECT +#define PPP_MAXCONNECT 0 +#endif + +#ifndef PPP_ALLOWED_ADDRS +#define PPP_ALLOWED_ADDRS 0 +#endif + +#ifndef PPP_PROTOCOLNAME +#define PPP_PROTOCOLNAME 0 +#endif + +#ifndef PPP_STATS_SUPPORT +#define PPP_STATS_SUPPORT 0 +#endif + +#ifndef DEFLATE_SUPPORT +#define DEFLATE_SUPPORT 0 +#endif + +#ifndef BSDCOMPRESS_SUPPORT +#define BSDCOMPRESS_SUPPORT 0 +#endif + +#ifndef PREDICTOR_SUPPORT +#define PREDICTOR_SUPPORT 0 +#endif + +/************************* +*** PUBLIC DEFINITIONS *** +*************************/ + +/* + * The basic PPP frame. + */ +#define PPP_HDRLEN 4 /* octets for standard ppp header */ +#define PPP_FCSLEN 2 /* octets for FCS */ + +/* + * Values for phase. + */ +#define PPP_PHASE_DEAD 0 +#define PPP_PHASE_MASTER 1 +#define PPP_PHASE_HOLDOFF 2 +#define PPP_PHASE_INITIALIZE 3 +#define PPP_PHASE_SERIALCONN 4 +#define PPP_PHASE_DORMANT 5 +#define PPP_PHASE_ESTABLISH 6 +#define PPP_PHASE_AUTHENTICATE 7 +#define PPP_PHASE_CALLBACK 8 +#define PPP_PHASE_NETWORK 9 +#define PPP_PHASE_RUNNING 10 +#define PPP_PHASE_TERMINATE 11 +#define PPP_PHASE_DISCONNECT 12 + +/* Error codes. */ +#define PPPERR_NONE 0 /* No error. */ +#define PPPERR_PARAM 1 /* Invalid parameter. */ +#define PPPERR_OPEN 2 /* Unable to open PPP session. */ +#define PPPERR_DEVICE 3 /* Invalid I/O device for PPP. */ +#define PPPERR_ALLOC 4 /* Unable to allocate resources. */ +#define PPPERR_USER 5 /* User interrupt. */ +#define PPPERR_CONNECT 6 /* Connection lost. */ +#define PPPERR_AUTHFAIL 7 /* Failed authentication challenge. */ +#define PPPERR_PROTOCOL 8 /* Failed to meet protocol. */ +#define PPPERR_PEERDEAD 9 /* Connection timeout */ +#define PPPERR_IDLETIMEOUT 10 /* Idle Timeout */ +#define PPPERR_CONNECTTIME 11 /* Max connect time reached */ +#define PPPERR_LOOPBACK 12 /* Loopback detected */ + +/* Whether auth support is enabled at all */ +#define PPP_AUTH_SUPPORT (PAP_SUPPORT || CHAP_SUPPORT || EAP_SUPPORT) + +/************************ +*** PUBLIC DATA TYPES *** +************************/ + +/* + * Other headers require ppp_pcb definition for prototypes, but ppp_pcb + * require some structure definition from other headers as well, we are + * fixing the dependency loop here by declaring the ppp_pcb type then + * by including headers containing necessary struct definition for ppp_pcb + */ +typedef struct ppp_pcb_s ppp_pcb; + +/* Type definitions for BSD code. */ +#ifndef __u_char_defined +typedef unsigned long u_long; +typedef unsigned int u_int; +typedef unsigned short u_short; +typedef unsigned char u_char; +#endif + +#include "fsm.h" +#include "lcp.h" +#if CCP_SUPPORT +#include "ccp.h" +#endif /* CCP_SUPPORT */ +#if MPPE_SUPPORT +#include "mppe.h" +#endif /* MPPE_SUPPORT */ +#if PPP_IPV4_SUPPORT +#include "ipcp.h" +#endif /* PPP_IPV4_SUPPORT */ +#if PPP_IPV6_SUPPORT +#include "ipv6cp.h" +#endif /* PPP_IPV6_SUPPORT */ +#if PAP_SUPPORT +#include "upap.h" +#endif /* PAP_SUPPORT */ +#if CHAP_SUPPORT +#include "chap-new.h" +#endif /* CHAP_SUPPORT */ +#if EAP_SUPPORT +#include "eap.h" +#endif /* EAP_SUPPORT */ +#if VJ_SUPPORT +#include "vj.h" +#endif /* VJ_SUPPORT */ + +/* Link status callback function prototype */ +typedef void (*ppp_link_status_cb_fn)(ppp_pcb *pcb, int err_code, void *ctx); + +/* + * PPP configuration. + */ +typedef struct ppp_settings_s { + +#if PPP_SERVER && PPP_AUTH_SUPPORT + unsigned int auth_required :1; /* Peer is required to authenticate */ + unsigned int null_login :1; /* Username of "" and a password of "" are acceptable */ +#endif /* PPP_SERVER && PPP_AUTH_SUPPORT */ +#if PPP_REMOTENAME + unsigned int explicit_remote :1; /* remote_name specified with remotename opt */ +#endif /* PPP_REMOTENAME */ +#if PAP_SUPPORT + unsigned int refuse_pap :1; /* Don't proceed auth. with PAP */ +#endif /* PAP_SUPPORT */ +#if CHAP_SUPPORT + unsigned int refuse_chap :1; /* Don't proceed auth. with CHAP */ +#endif /* CHAP_SUPPORT */ +#if MSCHAP_SUPPORT + unsigned int refuse_mschap :1; /* Don't proceed auth. with MS-CHAP */ + unsigned int refuse_mschap_v2 :1; /* Don't proceed auth. with MS-CHAPv2 */ +#endif /* MSCHAP_SUPPORT */ +#if EAP_SUPPORT + unsigned int refuse_eap :1; /* Don't proceed auth. with EAP */ +#endif /* EAP_SUPPORT */ +#if LWIP_DNS + unsigned int usepeerdns :1; /* Ask peer for DNS adds */ +#endif /* LWIP_DNS */ + unsigned int persist :1; /* Persist mode, always try to open the connection */ +#if PRINTPKT_SUPPORT + unsigned int hide_password :1; /* Hide password in dumped packets */ +#endif /* PRINTPKT_SUPPORT */ + unsigned int noremoteip :1; /* Let him have no IP address */ + unsigned int lax_recv :1; /* accept control chars in asyncmap */ + unsigned int noendpoint :1; /* don't send/accept endpoint discriminator */ +#if PPP_LCP_ADAPTIVE + unsigned int lcp_echo_adaptive :1; /* request echo only if the link was idle */ +#endif /* PPP_LCP_ADAPTIVE */ +#if MPPE_SUPPORT + unsigned int require_mppe :1; /* Require MPPE (Microsoft Point to Point Encryption) */ + unsigned int refuse_mppe_40 :1; /* Allow MPPE 40-bit mode? */ + unsigned int refuse_mppe_128 :1; /* Allow MPPE 128-bit mode? */ + unsigned int refuse_mppe_stateful :1; /* Allow MPPE stateful mode? */ +#endif /* MPPE_SUPPORT */ + + u16_t listen_time; /* time to listen first (ms), waiting for peer to send LCP packet */ + +#if PPP_IDLETIMELIMIT + u16_t idle_time_limit; /* Disconnect if idle for this many seconds */ +#endif /* PPP_IDLETIMELIMIT */ +#if PPP_MAXCONNECT + u32_t maxconnect; /* Maximum connect time (seconds) */ +#endif /* PPP_MAXCONNECT */ + +#if PPP_AUTH_SUPPORT + /* auth data */ + const char *user; /* Username for PAP */ + const char *passwd; /* Password for PAP, secret for CHAP */ +#if PPP_REMOTENAME + char remote_name[MAXNAMELEN + 1]; /* Peer's name for authentication */ +#endif /* PPP_REMOTENAME */ + +#if PAP_SUPPORT + u8_t pap_timeout_time; /* Timeout (seconds) for auth-req retrans. */ + u8_t pap_max_transmits; /* Number of auth-reqs sent */ +#if PPP_SERVER + u8_t pap_req_timeout; /* Time to wait for auth-req from peer */ +#endif /* PPP_SERVER */ +#endif /* PAP_SUPPPORT */ + +#if CHAP_SUPPORT + u8_t chap_timeout_time; /* Timeout (seconds) for retransmitting req */ + u8_t chap_max_transmits; /* max # times to send challenge */ +#if PPP_SERVER + u8_t chap_rechallenge_time; /* Time to wait for auth-req from peer */ +#endif /* PPP_SERVER */ +#endif /* CHAP_SUPPPORT */ + +#if EAP_SUPPORT + u8_t eap_req_time; /* Time to wait (for retransmit/fail) */ + u8_t eap_allow_req; /* Max Requests allowed */ +#if PPP_SERVER + u8_t eap_timeout_time; /* Time to wait (for retransmit/fail) */ + u8_t eap_max_transmits; /* Max Requests allowed */ +#endif /* PPP_SERVER */ +#endif /* EAP_SUPPORT */ + +#endif /* PPP_AUTH_SUPPORT */ + + u8_t fsm_timeout_time; /* Timeout time in seconds */ + u8_t fsm_max_conf_req_transmits; /* Maximum Configure-Request transmissions */ + u8_t fsm_max_term_transmits; /* Maximum Terminate-Request transmissions */ + u8_t fsm_max_nak_loops; /* Maximum number of nak loops tolerated */ + + u8_t lcp_loopbackfail; /* Number of times we receive our magic number from the peer + before deciding the link is looped-back. */ + u8_t lcp_echo_interval; /* Interval between LCP echo-requests */ + u8_t lcp_echo_fails; /* Tolerance to unanswered echo-requests */ + +} ppp_settings; + +#if PPP_SERVER +struct ppp_addrs { +#if PPP_IPV4_SUPPORT + ip4_addr_t our_ipaddr, his_ipaddr, netmask; +#if LWIP_DNS + ip4_addr_t dns1, dns2; +#endif /* LWIP_DNS */ +#endif /* PPP_IPV4_SUPPORT */ +#if PPP_IPV6_SUPPORT + ip6_addr_t our6_ipaddr, his6_ipaddr; +#endif /* PPP_IPV6_SUPPORT */ +}; +#endif /* PPP_SERVER */ + +/* + * PPP interface control block. + */ +struct ppp_pcb_s { + ppp_settings settings; + const struct link_callbacks *link_cb; + void *link_ctx_cb; + void (*link_status_cb)(ppp_pcb *pcb, int err_code, void *ctx); /* Status change callback */ +#if PPP_NOTIFY_PHASE + void (*notify_phase_cb)(ppp_pcb *pcb, u8_t phase, void *ctx); /* Notify phase callback */ +#endif /* PPP_NOTIFY_PHASE */ + void *ctx_cb; /* Callbacks optional pointer */ + struct netif *netif; /* PPP interface */ + u8_t phase; /* where the link is at */ + u8_t err_code; /* Code indicating why interface is down. */ + + /* flags */ +#if PPP_IPV4_SUPPORT + unsigned int ask_for_local :1; /* request our address from peer */ + unsigned int ipcp_is_open :1; /* haven't called np_finished() */ + unsigned int ipcp_is_up :1; /* have called ipcp_up() */ + unsigned int if4_up :1; /* True when the IPv4 interface is up. */ +#if 0 /* UNUSED - PROXY ARP */ + unsigned int proxy_arp_set :1; /* Have created proxy arp entry */ +#endif /* UNUSED - PROXY ARP */ +#endif /* PPP_IPV4_SUPPORT */ +#if PPP_IPV6_SUPPORT + unsigned int ipv6cp_is_up :1; /* have called ip6cp_up() */ + unsigned int if6_up :1; /* True when the IPv6 interface is up. */ +#endif /* PPP_IPV6_SUPPORT */ + unsigned int lcp_echo_timer_running :1; /* set if a timer is running */ +#if VJ_SUPPORT + unsigned int vj_enabled :1; /* Flag indicating VJ compression enabled. */ +#endif /* VJ_SUPPORT */ +#if CCP_SUPPORT + unsigned int ccp_all_rejected :1; /* we rejected all peer's options */ +#endif /* CCP_SUPPORT */ +#if MPPE_SUPPORT + unsigned int mppe_keys_set :1; /* Have the MPPE keys been set? */ +#endif /* MPPE_SUPPORT */ + +#if PPP_AUTH_SUPPORT + /* auth data */ +#if PPP_SERVER && defined(HAVE_MULTILINK) + char peer_authname[MAXNAMELEN + 1]; /* The name by which the peer authenticated itself to us. */ +#endif /* PPP_SERVER && defined(HAVE_MULTILINK) */ + u16_t auth_pending; /* Records which authentication operations haven't completed yet. */ + u16_t auth_done; /* Records which authentication operations have been completed. */ + +#if PAP_SUPPORT + upap_state upap; /* PAP data */ +#endif /* PAP_SUPPORT */ + +#if CHAP_SUPPORT + chap_client_state chap_client; /* CHAP client data */ +#if PPP_SERVER + chap_server_state chap_server; /* CHAP server data */ +#endif /* PPP_SERVER */ +#endif /* CHAP_SUPPORT */ + +#if EAP_SUPPORT + eap_state eap; /* EAP data */ +#endif /* EAP_SUPPORT */ +#endif /* PPP_AUTH_SUPPORT */ + + fsm lcp_fsm; /* LCP fsm structure */ + lcp_options lcp_wantoptions; /* Options that we want to request */ + lcp_options lcp_gotoptions; /* Options that peer ack'd */ + lcp_options lcp_allowoptions; /* Options we allow peer to request */ + lcp_options lcp_hisoptions; /* Options that we ack'd */ + u16_t peer_mru; /* currently negotiated peer MRU */ + u8_t lcp_echos_pending; /* Number of outstanding echo msgs */ + u8_t lcp_echo_number; /* ID number of next echo frame */ + + u8_t num_np_open; /* Number of network protocols which we have opened. */ + u8_t num_np_up; /* Number of network protocols which have come up. */ + +#if VJ_SUPPORT + struct vjcompress vj_comp; /* Van Jacobson compression header. */ +#endif /* VJ_SUPPORT */ + +#if CCP_SUPPORT + fsm ccp_fsm; /* CCP fsm structure */ + ccp_options ccp_wantoptions; /* what to request the peer to use */ + ccp_options ccp_gotoptions; /* what the peer agreed to do */ + ccp_options ccp_allowoptions; /* what we'll agree to do */ + ccp_options ccp_hisoptions; /* what we agreed to do */ + u8_t ccp_localstate; /* Local state (mainly for handling reset-reqs and reset-acks). */ + u8_t ccp_receive_method; /* Method chosen on receive path */ + u8_t ccp_transmit_method; /* Method chosen on transmit path */ +#if MPPE_SUPPORT + ppp_mppe_state mppe_comp; /* MPPE "compressor" structure */ + ppp_mppe_state mppe_decomp; /* MPPE "decompressor" structure */ +#endif /* MPPE_SUPPORT */ +#endif /* CCP_SUPPORT */ + +#if PPP_IPV4_SUPPORT + fsm ipcp_fsm; /* IPCP fsm structure */ + ipcp_options ipcp_wantoptions; /* Options that we want to request */ + ipcp_options ipcp_gotoptions; /* Options that peer ack'd */ + ipcp_options ipcp_allowoptions; /* Options we allow peer to request */ + ipcp_options ipcp_hisoptions; /* Options that we ack'd */ +#endif /* PPP_IPV4_SUPPORT */ + +#if PPP_IPV6_SUPPORT + fsm ipv6cp_fsm; /* IPV6CP fsm structure */ + ipv6cp_options ipv6cp_wantoptions; /* Options that we want to request */ + ipv6cp_options ipv6cp_gotoptions; /* Options that peer ack'd */ + ipv6cp_options ipv6cp_allowoptions; /* Options we allow peer to request */ + ipv6cp_options ipv6cp_hisoptions; /* Options that we ack'd */ +#endif /* PPP_IPV6_SUPPORT */ +}; + +/************************ + *** PUBLIC FUNCTIONS *** + ************************/ + +/* + * WARNING: For multi-threads environment, all ppp_set_* functions most + * only be called while the PPP is in the dead phase (i.e. disconnected). + */ + +#if PPP_AUTH_SUPPORT +/* + * Set PPP authentication. + * + * Warning: Using PPPAUTHTYPE_ANY might have security consequences. + * RFC 1994 says: + * + * In practice, within or associated with each PPP server, there is a + * database which associates "user" names with authentication + * information ("secrets"). It is not anticipated that a particular + * named user would be authenticated by multiple methods. This would + * make the user vulnerable to attacks which negotiate the least secure + * method from among a set (such as PAP rather than CHAP). If the same + * secret was used, PAP would reveal the secret to be used later with + * CHAP. + * + * Instead, for each user name there should be an indication of exactly + * one method used to authenticate that user name. If a user needs to + * make use of different authentication methods under different + * circumstances, then distinct user names SHOULD be employed, each of + * which identifies exactly one authentication method. + * + * Default is none auth type, unset (NULL) user and passwd. + */ +#define PPPAUTHTYPE_NONE 0x00 +#define PPPAUTHTYPE_PAP 0x01 +#define PPPAUTHTYPE_CHAP 0x02 +#define PPPAUTHTYPE_MSCHAP 0x04 +#define PPPAUTHTYPE_MSCHAP_V2 0x08 +#define PPPAUTHTYPE_EAP 0x10 +#define PPPAUTHTYPE_ANY 0xff +void ppp_set_auth(ppp_pcb *pcb, u8_t authtype, const char *user, const char *passwd); + +/* + * If set, peer is required to authenticate. This is mostly necessary for PPP server support. + * + * Default is false. + */ +#define ppp_set_auth_required(ppp, boolval) (ppp->settings.auth_required = boolval) +#endif /* PPP_AUTH_SUPPORT */ + +#if PPP_IPV4_SUPPORT +/* + * Set PPP interface "our" and "his" IPv4 addresses. This is mostly necessary for PPP server + * support but it can also be used on a PPP link where each side choose its own IP address. + * + * Default is unset (0.0.0.0). + */ +#define ppp_set_ipcp_ouraddr(ppp, addr) do { ppp->ipcp_wantoptions.ouraddr = ip4_addr_get_u32(addr); \ + ppp->ask_for_local = ppp->ipcp_wantoptions.ouraddr != 0; } while(0) +#define ppp_set_ipcp_hisaddr(ppp, addr) (ppp->ipcp_wantoptions.hisaddr = ip4_addr_get_u32(addr)) +#if LWIP_DNS +/* + * Set DNS server addresses that are sent if the peer asks for them. This is mostly necessary + * for PPP server support. + * + * Default is unset (0.0.0.0). + */ +#define ppp_set_ipcp_dnsaddr(ppp, index, addr) (ppp->ipcp_allowoptions.dnsaddr[index] = ip4_addr_get_u32(addr)) + +/* + * If set, we ask the peer for up to 2 DNS server addresses. Received DNS server addresses are + * registered using the dns_setserver() function. + * + * Default is false. + */ +#define ppp_set_usepeerdns(ppp, boolval) (ppp->settings.usepeerdns = boolval) +#endif /* LWIP_DNS */ +#endif /* PPP_IPV4_SUPPORT */ + +#if MPPE_SUPPORT +/* Disable MPPE (Microsoft Point to Point Encryption). This parameter is exclusive. */ +#define PPP_MPPE_DISABLE 0x00 +/* Require the use of MPPE (Microsoft Point to Point Encryption). */ +#define PPP_MPPE_ENABLE 0x01 +/* Allow MPPE to use stateful mode. Stateless mode is still attempted first. */ +#define PPP_MPPE_ALLOW_STATEFUL 0x02 +/* Refuse the use of MPPE with 40-bit encryption. Conflict with PPP_MPPE_REFUSE_128. */ +#define PPP_MPPE_REFUSE_40 0x04 +/* Refuse the use of MPPE with 128-bit encryption. Conflict with PPP_MPPE_REFUSE_40. */ +#define PPP_MPPE_REFUSE_128 0x08 +/* + * Set MPPE configuration + * + * Default is disabled. + */ +void ppp_set_mppe(ppp_pcb *pcb, u8_t flags); +#endif /* MPPE_SUPPORT */ + +/* + * Wait for up to intval milliseconds for a valid PPP packet from the peer. + * At the end of this time, or when a valid PPP packet is received from the + * peer, we commence negotiation by sending our first LCP packet. + * + * Default is 0. + */ +#define ppp_set_listen_time(ppp, intval) (ppp->settings.listen_time = intval) + +/* + * If set, we will attempt to initiate a connection but if no reply is received from + * the peer, we will then just wait passively for a valid LCP packet from the peer. + * + * Default is false. + */ +#define ppp_set_passive(ppp, boolval) (ppp->lcp_wantoptions.passive = boolval) + +/* + * If set, we will not transmit LCP packets to initiate a connection until a valid + * LCP packet is received from the peer. This is what we usually call the server mode. + * + * Default is false. + */ +#define ppp_set_silent(ppp, boolval) (ppp->lcp_wantoptions.silent = boolval) + +/* + * If set, enable protocol field compression negotiation in both the receive and + * the transmit direction. + * + * Default is true. + */ +#define ppp_set_neg_pcomp(ppp, boolval) (ppp->lcp_wantoptions.neg_pcompression = \ + ppp->lcp_allowoptions.neg_pcompression = boolval) + +/* + * If set, enable Address/Control compression in both the receive and the transmit + * direction. + * + * Default is true. + */ +#define ppp_set_neg_accomp(ppp, boolval) (ppp->lcp_wantoptions.neg_accompression = \ + ppp->lcp_allowoptions.neg_accompression = boolval) + +/* + * If set, enable asyncmap negotiation. Otherwise forcing all control characters to + * be escaped for both the transmit and the receive direction. + * + * Default is true. + */ +#define ppp_set_neg_asyncmap(ppp, boolval) (ppp->lcp_wantoptions.neg_asyncmap = \ + ppp->lcp_allowoptions.neg_asyncmap = boolval) + +/* + * This option sets the Async-Control-Character-Map (ACCM) for this end of the link. + * The ACCM is a set of 32 bits, one for each of the ASCII control characters with + * values from 0 to 31, where a 1 bit indicates that the corresponding control + * character should not be used in PPP packets sent to this system. The map is + * an unsigned 32 bits integer where the least significant bit (00000001) represents + * character 0 and the most significant bit (80000000) represents character 31. + * We will then ask the peer to send these characters as a 2-byte escape sequence. + * + * Default is 0. + */ +#define ppp_set_asyncmap(ppp, intval) (ppp->lcp_wantoptions.asyncmap = intval) + +/* + * Set a PPP interface as the default network interface + * (used to output all packets for which no specific route is found). + */ +#define ppp_set_default(ppp) netif_set_default(ppp->netif) + +#if PPP_NOTIFY_PHASE +/* + * Set a PPP notify phase callback. + * + * This can be used for example to set a LED pattern depending on the + * current phase of the PPP session. + */ +typedef void (*ppp_notify_phase_cb_fn)(ppp_pcb *pcb, u8_t phase, void *ctx); +void ppp_set_notify_phase_callback(ppp_pcb *pcb, ppp_notify_phase_cb_fn notify_phase_cb); +#endif /* PPP_NOTIFY_PHASE */ + +/* + * Initiate a PPP connection. + * + * This can only be called if PPP is in the dead phase. + * + * Holdoff is the time to wait (in seconds) before initiating + * the connection. + * + * If this port connects to a modem, the modem connection must be + * established before calling this. + */ +err_t ppp_connect(ppp_pcb *pcb, u16_t holdoff); + +#if PPP_SERVER +/* + * Listen for an incoming PPP connection. + * + * This can only be called if PPP is in the dead phase. + * + * If this port connects to a modem, the modem connection must be + * established before calling this. + */ +err_t ppp_listen(ppp_pcb *pcb); +#endif /* PPP_SERVER */ + +/* + * Initiate the end of a PPP connection. + * Any outstanding packets in the queues are dropped. + * + * Setting nocarrier to 1 close the PPP connection without initiating the + * shutdown procedure. Always using nocarrier = 0 is still recommended, + * this is going to take a little longer time if your link is down, but + * is a safer choice for the PPP state machine. + * + * Return 0 on success, an error code on failure. + */ +err_t ppp_close(ppp_pcb *pcb, u8_t nocarrier); + +/* + * Release the control block. + * + * This can only be called if PPP is in the dead phase. + * + * You must use ppp_close() before if you wish to terminate + * an established PPP session. + * + * Return 0 on success, an error code on failure. + */ +err_t ppp_free(ppp_pcb *pcb); + +/* + * PPP IOCTL commands. + * + * Get the up status - 0 for down, non-zero for up. The argument must + * point to an int. + */ +#define PPPCTLG_UPSTATUS 0 + +/* + * Get the PPP error code. The argument must point to an int. + * Returns a PPPERR_* value. + */ +#define PPPCTLG_ERRCODE 1 + +/* + * Get the fd associated with a PPP over serial + */ +#define PPPCTLG_FD 2 + +/* + * Get and set parameters for the given connection. + * Return 0 on success, an error code on failure. + */ +err_t ppp_ioctl(ppp_pcb *pcb, u8_t cmd, void *arg); + +/* Get the PPP netif interface */ +#define ppp_netif(ppp) (ppp->netif) + +/* Set an lwIP-style status-callback for the selected PPP device */ +#define ppp_set_netif_statuscallback(ppp, status_cb) \ + netif_set_status_callback(ppp->netif, status_cb); + +/* Set an lwIP-style link-callback for the selected PPP device */ +#define ppp_set_netif_linkcallback(ppp, link_cb) \ + netif_set_link_callback(ppp->netif, link_cb); + +#ifdef __cplusplus +} +#endif + +#endif /* PPP_H */ + +#endif /* PPP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/ppp_impl.h b/Other/tun2socks/core/c/include/netif/ppp/ppp_impl.h new file mode 100644 index 0000000..40843d5 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/ppp_impl.h @@ -0,0 +1,722 @@ +/***************************************************************************** +* ppp.h - Network Point to Point Protocol header file. +* +* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. +* portions Copyright (c) 1997 Global Election Systems Inc. +* +* The authors hereby grant permission to use, copy, modify, distribute, +* and license this software and its documentation for any purpose, provided +* that existing copyright notices are retained in all copies and that this +* notice and the following disclaimer are included verbatim in any +* distributions. No written agreement, license, or royalty fee is required +* for any of the authorized uses. +* +* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR +* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +****************************************************************************** +* REVISION HISTORY +* +* 03-01-01 Marc Boucher +* Ported to lwIP. +* 97-11-05 Guy Lancaster , Global Election Systems Inc. +* Original derived from BSD codes. +*****************************************************************************/ +#ifndef LWIP_HDR_PPP_IMPL_H +#define LWIP_HDR_PPP_IMPL_H + +#include "netif/ppp/ppp_opts.h" + +#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifdef PPP_INCLUDE_SETTINGS_HEADER +#include "ppp_settings.h" +#endif + +#include /* formats */ +#include +#include +#include /* strtol() */ + +#include "lwip/netif.h" +#include "lwip/def.h" +#include "lwip/timeouts.h" + +#include "ppp.h" +#include "pppdebug.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Memory used for control packets. + * + * PPP_CTRL_PBUF_MAX_SIZE is the amount of memory we allocate when we + * cannot figure out how much we are going to use before filling the buffer. + */ +#if PPP_USE_PBUF_RAM +#define PPP_CTRL_PBUF_TYPE PBUF_RAM +#define PPP_CTRL_PBUF_MAX_SIZE 512 +#else /* PPP_USE_PBUF_RAM */ +#define PPP_CTRL_PBUF_TYPE PBUF_POOL +#define PPP_CTRL_PBUF_MAX_SIZE PBUF_POOL_BUFSIZE +#endif /* PPP_USE_PBUF_RAM */ + +/* + * The basic PPP frame. + */ +#define PPP_ADDRESS(p) (((u_char *)(p))[0]) +#define PPP_CONTROL(p) (((u_char *)(p))[1]) +#define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3]) + +/* + * Significant octet values. + */ +#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ +#define PPP_UI 0x03 /* Unnumbered Information */ +#define PPP_FLAG 0x7e /* Flag Sequence */ +#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ +#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ + +/* + * Protocol field values. + */ +#define PPP_IP 0x21 /* Internet Protocol */ +#if 0 /* UNUSED */ +#define PPP_AT 0x29 /* AppleTalk Protocol */ +#define PPP_IPX 0x2b /* IPX protocol */ +#endif /* UNUSED */ +#if VJ_SUPPORT +#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ +#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ +#endif /* VJ_SUPPORT */ +#if PPP_IPV6_SUPPORT +#define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ +#endif /* PPP_IPV6_SUPPORT */ +#if CCP_SUPPORT +#define PPP_COMP 0xfd /* compressed packet */ +#endif /* CCP_SUPPORT */ +#define PPP_IPCP 0x8021 /* IP Control Protocol */ +#if 0 /* UNUSED */ +#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ +#define PPP_IPXCP 0x802b /* IPX Control Protocol */ +#endif /* UNUSED */ +#if PPP_IPV6_SUPPORT +#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ +#endif /* PPP_IPV6_SUPPORT */ +#if CCP_SUPPORT +#define PPP_CCP 0x80fd /* Compression Control Protocol */ +#endif /* CCP_SUPPORT */ +#if ECP_SUPPORT +#define PPP_ECP 0x8053 /* Encryption Control Protocol */ +#endif /* ECP_SUPPORT */ +#define PPP_LCP 0xc021 /* Link Control Protocol */ +#if PAP_SUPPORT +#define PPP_PAP 0xc023 /* Password Authentication Protocol */ +#endif /* PAP_SUPPORT */ +#if LQR_SUPPORT +#define PPP_LQR 0xc025 /* Link Quality Report protocol */ +#endif /* LQR_SUPPORT */ +#if CHAP_SUPPORT +#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ +#endif /* CHAP_SUPPORT */ +#if CBCP_SUPPORT +#define PPP_CBCP 0xc029 /* Callback Control Protocol */ +#endif /* CBCP_SUPPORT */ +#if EAP_SUPPORT +#define PPP_EAP 0xc227 /* Extensible Authentication Protocol */ +#endif /* EAP_SUPPORT */ + +/* + * The following struct gives the addresses of procedures to call + * for a particular lower link level protocol. + */ +struct link_callbacks { + /* Start a connection (e.g. Initiate discovery phase) */ + void (*connect) (ppp_pcb *pcb, void *ctx); +#if PPP_SERVER + /* Listen for an incoming connection (Passive mode) */ + void (*listen) (ppp_pcb *pcb, void *ctx); +#endif /* PPP_SERVER */ + /* End a connection (i.e. initiate disconnect phase) */ + void (*disconnect) (ppp_pcb *pcb, void *ctx); + /* Free lower protocol control block */ + err_t (*free) (ppp_pcb *pcb, void *ctx); + /* Write a pbuf to a ppp link, only used from PPP functions to send PPP packets. */ + err_t (*write)(ppp_pcb *pcb, void *ctx, struct pbuf *p); + /* Send a packet from lwIP core (IPv4 or IPv6) */ + err_t (*netif_output)(ppp_pcb *pcb, void *ctx, struct pbuf *p, u_short protocol); + /* configure the transmit-side characteristics of the PPP interface */ + void (*send_config)(ppp_pcb *pcb, void *ctx, u32_t accm, int pcomp, int accomp); + /* confire the receive-side characteristics of the PPP interface */ + void (*recv_config)(ppp_pcb *pcb, void *ctx, u32_t accm, int pcomp, int accomp); +}; + +/* + * What to do with network protocol (NP) packets. + */ +enum NPmode { + NPMODE_PASS, /* pass the packet through */ + NPMODE_DROP, /* silently drop the packet */ + NPMODE_ERROR, /* return an error */ + NPMODE_QUEUE /* save it up for later. */ +}; + +/* + * Statistics. + */ +#if PPP_STATS_SUPPORT +struct pppstat { + unsigned int ppp_ibytes; /* bytes received */ + unsigned int ppp_ipackets; /* packets received */ + unsigned int ppp_ierrors; /* receive errors */ + unsigned int ppp_obytes; /* bytes sent */ + unsigned int ppp_opackets; /* packets sent */ + unsigned int ppp_oerrors; /* transmit errors */ +}; + +#if VJ_SUPPORT +struct vjstat { + unsigned int vjs_packets; /* outbound packets */ + unsigned int vjs_compressed; /* outbound compressed packets */ + unsigned int vjs_searches; /* searches for connection state */ + unsigned int vjs_misses; /* times couldn't find conn. state */ + unsigned int vjs_uncompressedin; /* inbound uncompressed packets */ + unsigned int vjs_compressedin; /* inbound compressed packets */ + unsigned int vjs_errorin; /* inbound unknown type packets */ + unsigned int vjs_tossed; /* inbound packets tossed because of error */ +}; +#endif /* VJ_SUPPORT */ + +struct ppp_stats { + struct pppstat p; /* basic PPP statistics */ +#if VJ_SUPPORT + struct vjstat vj; /* VJ header compression statistics */ +#endif /* VJ_SUPPORT */ +}; + +#if CCP_SUPPORT +struct compstat { + unsigned int unc_bytes; /* total uncompressed bytes */ + unsigned int unc_packets; /* total uncompressed packets */ + unsigned int comp_bytes; /* compressed bytes */ + unsigned int comp_packets; /* compressed packets */ + unsigned int inc_bytes; /* incompressible bytes */ + unsigned int inc_packets; /* incompressible packets */ + unsigned int ratio; /* recent compression ratio << 8 */ +}; + +struct ppp_comp_stats { + struct compstat c; /* packet compression statistics */ + struct compstat d; /* packet decompression statistics */ +}; +#endif /* CCP_SUPPORT */ + +#endif /* PPP_STATS_SUPPORT */ + +#if PPP_IDLETIMELIMIT +/* + * The following structure records the time in seconds since + * the last NP packet was sent or received. + */ +struct ppp_idle { + time_t xmit_idle; /* time since last NP packet sent */ + time_t recv_idle; /* time since last NP packet received */ +}; +#endif /* PPP_IDLETIMELIMIT */ + +/* values for epdisc.class */ +#define EPD_NULL 0 /* null discriminator, no data */ +#define EPD_LOCAL 1 +#define EPD_IP 2 +#define EPD_MAC 3 +#define EPD_MAGIC 4 +#define EPD_PHONENUM 5 + +/* + * Global variables. + */ +#ifdef HAVE_MULTILINK +extern u8_t multilink; /* enable multilink operation */ +extern u8_t doing_multilink; +extern u8_t multilink_master; +extern u8_t bundle_eof; +extern u8_t bundle_terminating; +#endif + +#ifdef MAXOCTETS +extern unsigned int maxoctets; /* Maximum octetes per session (in bytes) */ +extern int maxoctets_dir; /* Direction : + 0 - in+out (default) + 1 - in + 2 - out + 3 - max(in,out) */ +extern int maxoctets_timeout; /* Timeout for check of octets limit */ +#define PPP_OCTETS_DIRECTION_SUM 0 +#define PPP_OCTETS_DIRECTION_IN 1 +#define PPP_OCTETS_DIRECTION_OUT 2 +#define PPP_OCTETS_DIRECTION_MAXOVERAL 3 +/* same as previos, but little different on RADIUS side */ +#define PPP_OCTETS_DIRECTION_MAXSESSION 4 +#endif + +/* Data input may be used by CCP and ECP, remove this entry + * from struct protent to save some flash + */ +#define PPP_DATAINPUT 0 + +/* + * The following struct gives the addresses of procedures to call + * for a particular protocol. + */ +struct protent { + u_short protocol; /* PPP protocol number */ + /* Initialization procedure */ + void (*init) (ppp_pcb *pcb); + /* Process a received packet */ + void (*input) (ppp_pcb *pcb, u_char *pkt, int len); + /* Process a received protocol-reject */ + void (*protrej) (ppp_pcb *pcb); + /* Lower layer has come up */ + void (*lowerup) (ppp_pcb *pcb); + /* Lower layer has gone down */ + void (*lowerdown) (ppp_pcb *pcb); + /* Open the protocol */ + void (*open) (ppp_pcb *pcb); + /* Close the protocol */ + void (*close) (ppp_pcb *pcb, const char *reason); +#if PRINTPKT_SUPPORT + /* Print a packet in readable form */ + int (*printpkt) (const u_char *pkt, int len, + void (*printer) (void *, const char *, ...), + void *arg); +#endif /* PRINTPKT_SUPPORT */ +#if PPP_DATAINPUT + /* Process a received data packet */ + void (*datainput) (ppp_pcb *pcb, u_char *pkt, int len); +#endif /* PPP_DATAINPUT */ +#if PRINTPKT_SUPPORT + const char *name; /* Text name of protocol */ + const char *data_name; /* Text name of corresponding data protocol */ +#endif /* PRINTPKT_SUPPORT */ +#if PPP_OPTIONS + option_t *options; /* List of command-line options */ + /* Check requested options, assign defaults */ + void (*check_options) (void); +#endif /* PPP_OPTIONS */ +#if DEMAND_SUPPORT + /* Configure interface for demand-dial */ + int (*demand_conf) (int unit); + /* Say whether to bring up link for this pkt */ + int (*active_pkt) (u_char *pkt, int len); +#endif /* DEMAND_SUPPORT */ +}; + +/* Table of pointers to supported protocols */ +extern const struct protent* const protocols[]; + + +/* Values for auth_pending, auth_done */ +#if PAP_SUPPORT +#define PAP_WITHPEER 0x1 +#define PAP_PEER 0x2 +#endif /* PAP_SUPPORT */ +#if CHAP_SUPPORT +#define CHAP_WITHPEER 0x4 +#define CHAP_PEER 0x8 +#endif /* CHAP_SUPPORT */ +#if EAP_SUPPORT +#define EAP_WITHPEER 0x10 +#define EAP_PEER 0x20 +#endif /* EAP_SUPPORT */ + +/* Values for auth_done only */ +#if CHAP_SUPPORT +#define CHAP_MD5_WITHPEER 0x40 +#define CHAP_MD5_PEER 0x80 +#if MSCHAP_SUPPORT +#define CHAP_MS_SHIFT 8 /* LSB position for MS auths */ +#define CHAP_MS_WITHPEER 0x100 +#define CHAP_MS_PEER 0x200 +#define CHAP_MS2_WITHPEER 0x400 +#define CHAP_MS2_PEER 0x800 +#endif /* MSCHAP_SUPPORT */ +#endif /* CHAP_SUPPORT */ + +/* Supported CHAP protocols */ +#if CHAP_SUPPORT + +#if MSCHAP_SUPPORT +#define CHAP_MDTYPE_SUPPORTED (MDTYPE_MICROSOFT_V2 | MDTYPE_MICROSOFT | MDTYPE_MD5) +#else /* MSCHAP_SUPPORT */ +#define CHAP_MDTYPE_SUPPORTED (MDTYPE_MD5) +#endif /* MSCHAP_SUPPORT */ + +#else /* CHAP_SUPPORT */ +#define CHAP_MDTYPE_SUPPORTED (MDTYPE_NONE) +#endif /* CHAP_SUPPORT */ + +#if PPP_STATS_SUPPORT +/* + * PPP statistics structure + */ +struct pppd_stats { + unsigned int bytes_in; + unsigned int bytes_out; + unsigned int pkts_in; + unsigned int pkts_out; +}; +#endif /* PPP_STATS_SUPPORT */ + + +/* + * PPP private functions + */ + + +/* + * Functions called from lwIP core. + */ + +/* initialize the PPP subsystem */ +int ppp_init(void); + +/* + * Functions called from PPP link protocols. + */ + +/* Create a new PPP control block */ +ppp_pcb *ppp_new(struct netif *pppif, const struct link_callbacks *callbacks, void *link_ctx_cb, + ppp_link_status_cb_fn link_status_cb, void *ctx_cb); + +/* Initiate LCP open request */ +void ppp_start(ppp_pcb *pcb); + +/* Called when link failed to setup */ +void ppp_link_failed(ppp_pcb *pcb); + +/* Called when link is normally down (i.e. it was asked to end) */ +void ppp_link_end(ppp_pcb *pcb); + +/* function called to process input packet */ +void ppp_input(ppp_pcb *pcb, struct pbuf *pb); + + +/* + * Functions called by PPP protocols. + */ + +/* function called by all PPP subsystems to send packets */ +err_t ppp_write(ppp_pcb *pcb, struct pbuf *p); + +/* functions called by auth.c link_terminated() */ +void ppp_link_terminated(ppp_pcb *pcb); + +void new_phase(ppp_pcb *pcb, int p); + +int ppp_send_config(ppp_pcb *pcb, int mtu, u32_t accm, int pcomp, int accomp); +int ppp_recv_config(ppp_pcb *pcb, int mru, u32_t accm, int pcomp, int accomp); + +#if PPP_IPV4_SUPPORT +int sifaddr(ppp_pcb *pcb, u32_t our_adr, u32_t his_adr, u32_t netmask); +int cifaddr(ppp_pcb *pcb, u32_t our_adr, u32_t his_adr); +#if 0 /* UNUSED - PROXY ARP */ +int sifproxyarp(ppp_pcb *pcb, u32_t his_adr); +int cifproxyarp(ppp_pcb *pcb, u32_t his_adr); +#endif /* UNUSED - PROXY ARP */ +#if LWIP_DNS +int sdns(ppp_pcb *pcb, u32_t ns1, u32_t ns2); +int cdns(ppp_pcb *pcb, u32_t ns1, u32_t ns2); +#endif /* LWIP_DNS */ +#if VJ_SUPPORT +int sifvjcomp(ppp_pcb *pcb, int vjcomp, int cidcomp, int maxcid); +#endif /* VJ_SUPPORT */ +int sifup(ppp_pcb *pcb); +int sifdown (ppp_pcb *pcb); +u32_t get_mask(u32_t addr); +#endif /* PPP_IPV4_SUPPORT */ + +#if PPP_IPV6_SUPPORT +int sif6addr(ppp_pcb *pcb, eui64_t our_eui64, eui64_t his_eui64); +int cif6addr(ppp_pcb *pcb, eui64_t our_eui64, eui64_t his_eui64); +int sif6up(ppp_pcb *pcb); +int sif6down (ppp_pcb *pcb); +#endif /* PPP_IPV6_SUPPORT */ + +#if DEMAND_SUPPORT +int sifnpmode(ppp_pcb *pcb, int proto, enum NPmode mode); +#endif /* DEMAND_SUPPORt */ + +void netif_set_mtu(ppp_pcb *pcb, int mtu); +int netif_get_mtu(ppp_pcb *pcb); + +#if CCP_SUPPORT +#if 0 /* unused */ +int ccp_test(ppp_pcb *pcb, u_char *opt_ptr, int opt_len, int for_transmit); +#endif /* unused */ +void ccp_set(ppp_pcb *pcb, u8_t isopen, u8_t isup, u8_t receive_method, u8_t transmit_method); +void ccp_reset_comp(ppp_pcb *pcb); +void ccp_reset_decomp(ppp_pcb *pcb); +#if 0 /* unused */ +int ccp_fatal_error(ppp_pcb *pcb); +#endif /* unused */ +#endif /* CCP_SUPPORT */ + +#if PPP_IDLETIMELIMIT +int get_idle_time(ppp_pcb *pcb, struct ppp_idle *ip); +#endif /* PPP_IDLETIMELIMIT */ + +#if DEMAND_SUPPORT +int get_loop_output(void); +#endif /* DEMAND_SUPPORT */ + +/* Optional protocol names list, to make our messages a little more informative. */ +#if PPP_PROTOCOLNAME +const char * protocol_name(int proto); +#endif /* PPP_PROTOCOLNAME */ + +/* Optional stats support, to get some statistics on the PPP interface */ +#if PPP_STATS_SUPPORT +void print_link_stats(void); /* Print stats, if available */ +void reset_link_stats(int u); /* Reset (init) stats when link goes up */ +void update_link_stats(int u); /* Get stats at link termination */ +#endif /* PPP_STATS_SUPPORT */ + + + +/* + * Inline versions of get/put char/short/long. + * Pointer is advanced; we assume that both arguments + * are lvalues and will already be in registers. + * cp MUST be u_char *. + */ +#define GETCHAR(c, cp) { \ + (c) = *(cp)++; \ +} +#define PUTCHAR(c, cp) { \ + *(cp)++ = (u_char) (c); \ +} +#define GETSHORT(s, cp) { \ + (s) = *(cp)++ << 8; \ + (s) |= *(cp)++; \ +} +#define PUTSHORT(s, cp) { \ + *(cp)++ = (u_char) ((s) >> 8); \ + *(cp)++ = (u_char) (s); \ +} +#define GETLONG(l, cp) { \ + (l) = *(cp)++ << 8; \ + (l) |= *(cp)++; (l) <<= 8; \ + (l) |= *(cp)++; (l) <<= 8; \ + (l) |= *(cp)++; \ +} +#define PUTLONG(l, cp) { \ + *(cp)++ = (u_char) ((l) >> 24); \ + *(cp)++ = (u_char) ((l) >> 16); \ + *(cp)++ = (u_char) ((l) >> 8); \ + *(cp)++ = (u_char) (l); \ +} + +#define INCPTR(n, cp) ((cp) += (n)) +#define DECPTR(n, cp) ((cp) -= (n)) + +/* + * System dependent definitions for user-level 4.3BSD UNIX implementation. + */ +#define TIMEOUT(f, a, t) do { sys_untimeout((f), (a)); sys_timeout((t)*1000, (f), (a)); } while(0) +#define TIMEOUTMS(f, a, t) do { sys_untimeout((f), (a)); sys_timeout((t), (f), (a)); } while(0) +#define UNTIMEOUT(f, a) sys_untimeout((f), (a)) + +#define BZERO(s, n) memset(s, 0, n) +#define BCMP(s1, s2, l) memcmp(s1, s2, l) + +#define PRINTMSG(m, l) { ppp_info("Remote message: %0.*v", l, m); } + +/* + * MAKEHEADER - Add Header fields to a packet. + */ +#define MAKEHEADER(p, t) { \ + PUTCHAR(PPP_ALLSTATIONS, p); \ + PUTCHAR(PPP_UI, p); \ + PUTSHORT(t, p); } + +/* Procedures exported from auth.c */ +void link_required(ppp_pcb *pcb); /* we are starting to use the link */ +void link_terminated(ppp_pcb *pcb); /* we are finished with the link */ +void link_down(ppp_pcb *pcb); /* the LCP layer has left the Opened state */ +void upper_layers_down(ppp_pcb *pcb); /* take all NCPs down */ +void link_established(ppp_pcb *pcb); /* the link is up; authenticate now */ +void start_networks(ppp_pcb *pcb); /* start all the network control protos */ +void continue_networks(ppp_pcb *pcb); /* start network [ip, etc] control protos */ +#if PPP_AUTH_SUPPORT +#if PPP_SERVER +int auth_check_passwd(ppp_pcb *pcb, char *auser, int userlen, char *apasswd, int passwdlen, const char **msg, int *msglen); + /* check the user name and passwd against configuration */ +void auth_peer_fail(ppp_pcb *pcb, int protocol); + /* peer failed to authenticate itself */ +void auth_peer_success(ppp_pcb *pcb, int protocol, int prot_flavor, const char *name, int namelen); + /* peer successfully authenticated itself */ +#endif /* PPP_SERVER */ +void auth_withpeer_fail(ppp_pcb *pcb, int protocol); + /* we failed to authenticate ourselves */ +void auth_withpeer_success(ppp_pcb *pcb, int protocol, int prot_flavor); + /* we successfully authenticated ourselves */ +#endif /* PPP_AUTH_SUPPORT */ +void np_up(ppp_pcb *pcb, int proto); /* a network protocol has come up */ +void np_down(ppp_pcb *pcb, int proto); /* a network protocol has gone down */ +void np_finished(ppp_pcb *pcb, int proto); /* a network protocol no longer needs link */ +#if PPP_AUTH_SUPPORT +int get_secret(ppp_pcb *pcb, const char *client, const char *server, char *secret, int *secret_len, int am_server); + /* get "secret" for chap */ +#endif /* PPP_AUTH_SUPPORT */ + +/* Procedures exported from ipcp.c */ +/* int parse_dotted_ip (char *, u32_t *); */ + +/* Procedures exported from demand.c */ +#if DEMAND_SUPPORT +void demand_conf (void); /* config interface(s) for demand-dial */ +void demand_block (void); /* set all NPs to queue up packets */ +void demand_unblock (void); /* set all NPs to pass packets */ +void demand_discard (void); /* set all NPs to discard packets */ +void demand_rexmit (int, u32_t); /* retransmit saved frames for an NP*/ +int loop_chars (unsigned char *, int); /* process chars from loopback */ +int loop_frame (unsigned char *, int); /* should we bring link up? */ +#endif /* DEMAND_SUPPORT */ + +/* Procedures exported from multilink.c */ +#ifdef HAVE_MULTILINK +void mp_check_options (void); /* Check multilink-related options */ +int mp_join_bundle (void); /* join our link to an appropriate bundle */ +void mp_exit_bundle (void); /* have disconnected our link from bundle */ +void mp_bundle_terminated (void); +char *epdisc_to_str (struct epdisc *); /* string from endpoint discrim. */ +int str_to_epdisc (struct epdisc *, char *); /* endpt disc. from str */ +#else +#define mp_bundle_terminated() /* nothing */ +#define mp_exit_bundle() /* nothing */ +#define doing_multilink 0 +#define multilink_master 0 +#endif + +/* Procedures exported from utils.c. */ +void ppp_print_string(const u_char *p, int len, void (*printer) (void *, const char *, ...), void *arg); /* Format a string for output */ +int ppp_slprintf(char *buf, int buflen, const char *fmt, ...); /* sprintf++ */ +int ppp_vslprintf(char *buf, int buflen, const char *fmt, va_list args); /* vsprintf++ */ +size_t ppp_strlcpy(char *dest, const char *src, size_t len); /* safe strcpy */ +size_t ppp_strlcat(char *dest, const char *src, size_t len); /* safe strncpy */ +void ppp_dbglog(const char *fmt, ...); /* log a debug message */ +void ppp_info(const char *fmt, ...); /* log an informational message */ +void ppp_notice(const char *fmt, ...); /* log a notice-level message */ +void ppp_warn(const char *fmt, ...); /* log a warning message */ +void ppp_error(const char *fmt, ...); /* log an error message */ +void ppp_fatal(const char *fmt, ...); /* log an error message and die(1) */ +#if PRINTPKT_SUPPORT +void ppp_dump_packet(ppp_pcb *pcb, const char *tag, unsigned char *p, int len); + /* dump packet to debug log if interesting */ +#endif /* PRINTPKT_SUPPORT */ + +/* + * Number of necessary timers analysis. + * + * PPP use at least one timer per each of its protocol, but not all protocols are + * active at the same time, thus the number of necessary timeouts is actually + * lower than enabled protocols. Here is the actual necessary timeouts based + * on code analysis. + * + * Note that many features analysed here are not working at all and are only + * there for a comprehensive analysis of necessary timers in order to prevent + * having to redo that each time we add a feature. + * + * Timer list + * + * | holdoff timeout + * | low level protocol timeout (PPPoE or PPPoL2P) + * | LCP delayed UP + * | LCP retransmit (FSM) + * | LCP Echo timer + * .| PAP or CHAP or EAP authentication + * . | ECP retransmit (FSM) + * . | CCP retransmit (FSM) when MPPE is enabled + * . | CCP retransmit (FSM) when MPPE is NOT enabled + * . | IPCP retransmit (FSM) + * . .| IP6CP retransmit (FSM) + * . . | Idle time limit + * . . | Max connect time + * . . | Max octets + * . . | CCP RACK timeout + * . . . + * PPP_PHASE_DEAD + * PPP_PHASE_HOLDOFF + * | . . . + * PPP_PHASE_INITIALIZE + * | . . . + * PPP_PHASE_ESTABLISH + * | . . . + * |. . . + * | . . + * PPP_PHASE_AUTHENTICATE + * | . . + * || . . + * PPP_PHASE_NETWORK + * | || . . + * | ||| . + * PPP_PHASE_RUNNING + * | .||||| + * | . |||| + * PPP_PHASE_TERMINATE + * | . |||| + * PPP_PHASE_NETWORK + * |. . + * PPP_PHASE_ESTABLISH + * PPP_PHASE_DISCONNECT + * PPP_PHASE_DEAD + * + * Alright, PPP basic retransmission and LCP Echo consume one timer. + * 1 + * + * If authentication is enabled one timer is necessary during authentication. + * 1 + PPP_AUTH_SUPPORT + * + * If ECP is enabled one timer is necessary before IPCP and/or IP6CP, one more + * is necessary if CCP is enabled (only with MPPE support but we don't care much + * up to this detail level). + * 1 + ECP_SUPPORT + CCP_SUPPORT + * + * If CCP is enabled it might consume a timer during IPCP or IP6CP, thus + * we might use IPCP, IP6CP and CCP timers simultaneously. + * 1 + PPP_IPV4_SUPPORT + PPP_IPV6_SUPPORT + CCP_SUPPORT + * + * When entering running phase, IPCP or IP6CP is still running. If idle time limit + * is enabled one more timer is necessary. Same for max connect time and max + * octets features. Furthermore CCP RACK might be used past this point. + * 1 + PPP_IPV4_SUPPORT + PPP_IPV6_SUPPORT -1 + PPP_IDLETIMELIMIT + PPP_MAXCONNECT + MAXOCTETS + CCP_SUPPORT + * + * IPv4 or IPv6 must be enabled, therefore we don't need to take care the authentication + * and the CCP + ECP case, thus reducing overall complexity. + * 1 + LWIP_MAX(PPP_IPV4_SUPPORT + PPP_IPV6_SUPPORT + CCP_SUPPORT, PPP_IPV4_SUPPORT + PPP_IPV6_SUPPORT -1 + PPP_IDLETIMELIMIT + PPP_MAXCONNECT + MAXOCTETS + CCP_SUPPORT) + * + * We don't support PPP_IDLETIMELIMIT + PPP_MAXCONNECT + MAXOCTETS features + * and adding those defines to ppp_opts.h just for having the value always + * defined to 0 isn't worth it. + * 1 + LWIP_MAX(PPP_IPV4_SUPPORT + PPP_IPV6_SUPPORT + CCP_SUPPORT, PPP_IPV4_SUPPORT + PPP_IPV6_SUPPORT -1 + CCP_SUPPORT) + * + * Thus, the following is enough for now. + * 1 + PPP_IPV4_SUPPORT + PPP_IPV6_SUPPORT + CCP_SUPPORT + */ + +#ifdef __cplusplus +} +#endif + +#endif /* PPP_SUPPORT */ +#endif /* LWIP_HDR_PPP_IMPL_H */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/ppp_opts.h b/Other/tun2socks/core/c/include/netif/ppp/ppp_opts.h new file mode 100644 index 0000000..6702bec --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/ppp_opts.h @@ -0,0 +1,610 @@ +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#ifndef LWIP_PPP_OPTS_H +#define LWIP_PPP_OPTS_H + +#include "lwip/opt.h" + +/** + * PPP_SUPPORT==1: Enable PPP. + */ +#ifndef PPP_SUPPORT +#define PPP_SUPPORT 0 +#endif + +/** + * PPPOE_SUPPORT==1: Enable PPP Over Ethernet + */ +#ifndef PPPOE_SUPPORT +#define PPPOE_SUPPORT 0 +#endif + +/** + * PPPOL2TP_SUPPORT==1: Enable PPP Over L2TP + */ +#ifndef PPPOL2TP_SUPPORT +#define PPPOL2TP_SUPPORT 0 +#endif + +/** + * PPPOL2TP_AUTH_SUPPORT==1: Enable PPP Over L2TP Auth (enable MD5 support) + */ +#ifndef PPPOL2TP_AUTH_SUPPORT +#define PPPOL2TP_AUTH_SUPPORT PPPOL2TP_SUPPORT +#endif + +/** + * PPPOS_SUPPORT==1: Enable PPP Over Serial + */ +#ifndef PPPOS_SUPPORT +#define PPPOS_SUPPORT PPP_SUPPORT +#endif + +/** + * LWIP_PPP_API==1: Enable PPP API (in pppapi.c) + */ +#ifndef LWIP_PPP_API +#define LWIP_PPP_API (PPP_SUPPORT && (NO_SYS == 0)) +#endif + +#if PPP_SUPPORT + +/** + * MEMP_NUM_PPP_PCB: the number of simultaneously active PPP + * connections (requires the PPP_SUPPORT option) + */ +#ifndef MEMP_NUM_PPP_PCB +#define MEMP_NUM_PPP_PCB 1 +#endif + +/** + * PPP_NUM_TIMEOUTS_PER_PCB: the number of sys_timeouts running in parallel per + * ppp_pcb. See the detailed explanation at the end of ppp_impl.h about simultaneous + * timers analysis. + */ +#ifndef PPP_NUM_TIMEOUTS_PER_PCB +#define PPP_NUM_TIMEOUTS_PER_PCB (1 + PPP_IPV4_SUPPORT + PPP_IPV6_SUPPORT + CCP_SUPPORT) +#endif + +/* The number of sys_timeouts required for the PPP module */ +#define PPP_NUM_TIMEOUTS (PPP_SUPPORT * PPP_NUM_TIMEOUTS_PER_PCB * MEMP_NUM_PPP_PCB) + +/** + * MEMP_NUM_PPPOS_INTERFACES: the number of concurrently active PPPoS + * interfaces (only used with PPPOS_SUPPORT==1) + */ +#ifndef MEMP_NUM_PPPOS_INTERFACES +#define MEMP_NUM_PPPOS_INTERFACES MEMP_NUM_PPP_PCB +#endif + +/** + * MEMP_NUM_PPPOE_INTERFACES: the number of concurrently active PPPoE + * interfaces (only used with PPPOE_SUPPORT==1) + */ +#ifndef MEMP_NUM_PPPOE_INTERFACES +#define MEMP_NUM_PPPOE_INTERFACES 1 +#endif + +/** + * MEMP_NUM_PPPOL2TP_INTERFACES: the number of concurrently active PPPoL2TP + * interfaces (only used with PPPOL2TP_SUPPORT==1) + */ +#ifndef MEMP_NUM_PPPOL2TP_INTERFACES +#define MEMP_NUM_PPPOL2TP_INTERFACES 1 +#endif + +/** + * MEMP_NUM_PPP_API_MSG: Number of concurrent PPP API messages (in pppapi.c) + */ +#ifndef MEMP_NUM_PPP_API_MSG +#define MEMP_NUM_PPP_API_MSG 5 +#endif + +/** + * PPP_DEBUG: Enable debugging for PPP. + */ +#ifndef PPP_DEBUG +#define PPP_DEBUG LWIP_DBG_OFF +#endif + +/** + * PPP_INPROC_IRQ_SAFE==1 call pppos_input() using tcpip_callback(). + * + * Please read the "PPPoS input path" chapter in the PPP documentation about this option. + */ +#ifndef PPP_INPROC_IRQ_SAFE +#define PPP_INPROC_IRQ_SAFE 0 +#endif + +/** + * PRINTPKT_SUPPORT==1: Enable PPP print packet support + * + * Mandatory for debugging, it displays exchanged packet content in debug trace. + */ +#ifndef PRINTPKT_SUPPORT +#define PRINTPKT_SUPPORT 0 +#endif + +/** + * PPP_IPV4_SUPPORT==1: Enable PPP IPv4 support + */ +#ifndef PPP_IPV4_SUPPORT +#define PPP_IPV4_SUPPORT (LWIP_IPV4) +#endif + +/** + * PPP_IPV6_SUPPORT==1: Enable PPP IPv6 support + */ +#ifndef PPP_IPV6_SUPPORT +#define PPP_IPV6_SUPPORT (LWIP_IPV6) +#endif + +/** + * PPP_NOTIFY_PHASE==1: Support PPP notify phase support + * + * PPP notify phase support allows you to set a callback which is + * called on change of the internal PPP state machine. + * + * This can be used for example to set a LED pattern depending on the + * current phase of the PPP session. + */ +#ifndef PPP_NOTIFY_PHASE +#define PPP_NOTIFY_PHASE 0 +#endif + +/** + * pbuf_type PPP is using for LCP, PAP, CHAP, EAP, CCP, IPCP and IP6CP packets. + * + * Memory allocated must be single buffered for PPP to works, it requires pbuf + * that are not going to be chained when allocated. This requires setting + * PBUF_POOL_BUFSIZE to at least 512 bytes, which is quite huge for small systems. + * + * Setting PPP_USE_PBUF_RAM to 1 makes PPP use memory from heap where continuous + * buffers are required, allowing you to use a smaller PBUF_POOL_BUFSIZE. + */ +#ifndef PPP_USE_PBUF_RAM +#define PPP_USE_PBUF_RAM 0 +#endif + +/** + * PPP_FCS_TABLE: Keep a 256*2 byte table to speed up FCS calculation for PPPoS + */ +#ifndef PPP_FCS_TABLE +#define PPP_FCS_TABLE 1 +#endif + +/** + * PAP_SUPPORT==1: Support PAP. + */ +#ifndef PAP_SUPPORT +#define PAP_SUPPORT 0 +#endif + +/** + * CHAP_SUPPORT==1: Support CHAP. + */ +#ifndef CHAP_SUPPORT +#define CHAP_SUPPORT 0 +#endif + +/** + * MSCHAP_SUPPORT==1: Support MSCHAP. + */ +#ifndef MSCHAP_SUPPORT +#define MSCHAP_SUPPORT 0 +#endif +#if MSCHAP_SUPPORT +/* MSCHAP requires CHAP support */ +#undef CHAP_SUPPORT +#define CHAP_SUPPORT 1 +#endif /* MSCHAP_SUPPORT */ + +/** + * EAP_SUPPORT==1: Support EAP. + */ +#ifndef EAP_SUPPORT +#define EAP_SUPPORT 0 +#endif + +/** + * CCP_SUPPORT==1: Support CCP. + */ +#ifndef CCP_SUPPORT +#define CCP_SUPPORT 0 +#endif + +/** + * MPPE_SUPPORT==1: Support MPPE. + */ +#ifndef MPPE_SUPPORT +#define MPPE_SUPPORT 0 +#endif +#if MPPE_SUPPORT +/* MPPE requires CCP support */ +#undef CCP_SUPPORT +#define CCP_SUPPORT 1 +/* MPPE requires MSCHAP support */ +#undef MSCHAP_SUPPORT +#define MSCHAP_SUPPORT 1 +/* MSCHAP requires CHAP support */ +#undef CHAP_SUPPORT +#define CHAP_SUPPORT 1 +#endif /* MPPE_SUPPORT */ + +/** + * CBCP_SUPPORT==1: Support CBCP. CURRENTLY NOT SUPPORTED! DO NOT SET! + */ +#ifndef CBCP_SUPPORT +#define CBCP_SUPPORT 0 +#endif + +/** + * ECP_SUPPORT==1: Support ECP. CURRENTLY NOT SUPPORTED! DO NOT SET! + */ +#ifndef ECP_SUPPORT +#define ECP_SUPPORT 0 +#endif + +/** + * DEMAND_SUPPORT==1: Support dial on demand. CURRENTLY NOT SUPPORTED! DO NOT SET! + */ +#ifndef DEMAND_SUPPORT +#define DEMAND_SUPPORT 0 +#endif + +/** + * LQR_SUPPORT==1: Support Link Quality Report. Do nothing except exchanging some LCP packets. + */ +#ifndef LQR_SUPPORT +#define LQR_SUPPORT 0 +#endif + +/** + * PPP_SERVER==1: Enable PPP server support (waiting for incoming PPP session). + * + * Currently only supported for PPPoS. + */ +#ifndef PPP_SERVER +#define PPP_SERVER 0 +#endif + +#if PPP_SERVER +/* + * PPP_OUR_NAME: Our name for authentication purposes + */ +#ifndef PPP_OUR_NAME +#define PPP_OUR_NAME "lwIP" +#endif +#endif /* PPP_SERVER */ + +/** + * VJ_SUPPORT==1: Support VJ header compression. + */ +#ifndef VJ_SUPPORT +#define VJ_SUPPORT 1 +#endif +/* VJ compression is only supported for TCP over IPv4 over PPPoS. */ +#if !PPPOS_SUPPORT || !PPP_IPV4_SUPPORT || !LWIP_TCP +#undef VJ_SUPPORT +#define VJ_SUPPORT 0 +#endif /* !PPPOS_SUPPORT */ + +/** + * PPP_MD5_RANDM==1: Use MD5 for better randomness. + * Enabled by default if CHAP, EAP, or L2TP AUTH support is enabled. + */ +#ifndef PPP_MD5_RANDM +#define PPP_MD5_RANDM (CHAP_SUPPORT || EAP_SUPPORT || PPPOL2TP_AUTH_SUPPORT) +#endif + +/** + * PolarSSL embedded library + * + * + * lwIP contains some files fetched from the latest BSD release of + * the PolarSSL project (PolarSSL 0.10.1-bsd) for ciphers and encryption + * methods we need for lwIP PPP support. + * + * The PolarSSL files were cleaned to contain only the necessary struct + * fields and functions needed for lwIP. + * + * The PolarSSL API was not changed at all, so if you are already using + * PolarSSL you can choose to skip the compilation of the included PolarSSL + * library into lwIP. + * + * If you are not using the embedded copy you must include external + * libraries into your arch/cc.h port file. + * + * Beware of the stack requirements which can be a lot larger if you are not + * using our cleaned PolarSSL library. + */ + +/** + * LWIP_USE_EXTERNAL_POLARSSL: Use external PolarSSL library + */ +#ifndef LWIP_USE_EXTERNAL_POLARSSL +#define LWIP_USE_EXTERNAL_POLARSSL 0 +#endif + +/** + * LWIP_USE_EXTERNAL_MBEDTLS: Use external mbed TLS library + */ +#ifndef LWIP_USE_EXTERNAL_MBEDTLS +#define LWIP_USE_EXTERNAL_MBEDTLS 0 +#endif + +/* + * PPP Timeouts + */ + +/** + * FSM_DEFTIMEOUT: Timeout time in seconds + */ +#ifndef FSM_DEFTIMEOUT +#define FSM_DEFTIMEOUT 6 +#endif + +/** + * FSM_DEFMAXTERMREQS: Maximum Terminate-Request transmissions + */ +#ifndef FSM_DEFMAXTERMREQS +#define FSM_DEFMAXTERMREQS 2 +#endif + +/** + * FSM_DEFMAXCONFREQS: Maximum Configure-Request transmissions + */ +#ifndef FSM_DEFMAXCONFREQS +#define FSM_DEFMAXCONFREQS 10 +#endif + +/** + * FSM_DEFMAXNAKLOOPS: Maximum number of nak loops + */ +#ifndef FSM_DEFMAXNAKLOOPS +#define FSM_DEFMAXNAKLOOPS 5 +#endif + +/** + * UPAP_DEFTIMEOUT: Timeout (seconds) for retransmitting req + */ +#ifndef UPAP_DEFTIMEOUT +#define UPAP_DEFTIMEOUT 6 +#endif + +/** + * UPAP_DEFTRANSMITS: Maximum number of auth-reqs to send + */ +#ifndef UPAP_DEFTRANSMITS +#define UPAP_DEFTRANSMITS 10 +#endif + +#if PPP_SERVER +/** + * UPAP_DEFREQTIME: Time to wait for auth-req from peer + */ +#ifndef UPAP_DEFREQTIME +#define UPAP_DEFREQTIME 30 +#endif +#endif /* PPP_SERVER */ + +/** + * CHAP_DEFTIMEOUT: Timeout (seconds) for retransmitting req + */ +#ifndef CHAP_DEFTIMEOUT +#define CHAP_DEFTIMEOUT 6 +#endif + +/** + * CHAP_DEFTRANSMITS: max # times to send challenge + */ +#ifndef CHAP_DEFTRANSMITS +#define CHAP_DEFTRANSMITS 10 +#endif + +#if PPP_SERVER +/** + * CHAP_DEFRECHALLENGETIME: If this option is > 0, rechallenge the peer every n seconds + */ +#ifndef CHAP_DEFRECHALLENGETIME +#define CHAP_DEFRECHALLENGETIME 0 +#endif +#endif /* PPP_SERVER */ + +/** + * EAP_DEFREQTIME: Time to wait for peer request + */ +#ifndef EAP_DEFREQTIME +#define EAP_DEFREQTIME 6 +#endif + +/** + * EAP_DEFALLOWREQ: max # times to accept requests + */ +#ifndef EAP_DEFALLOWREQ +#define EAP_DEFALLOWREQ 10 +#endif + +#if PPP_SERVER +/** + * EAP_DEFTIMEOUT: Timeout (seconds) for rexmit + */ +#ifndef EAP_DEFTIMEOUT +#define EAP_DEFTIMEOUT 6 +#endif + +/** + * EAP_DEFTRANSMITS: max # times to transmit + */ +#ifndef EAP_DEFTRANSMITS +#define EAP_DEFTRANSMITS 10 +#endif +#endif /* PPP_SERVER */ + +/** + * LCP_DEFLOOPBACKFAIL: Default number of times we receive our magic number from the peer + * before deciding the link is looped-back. + */ +#ifndef LCP_DEFLOOPBACKFAIL +#define LCP_DEFLOOPBACKFAIL 10 +#endif + +/** + * LCP_ECHOINTERVAL: Interval in seconds between keepalive echo requests, 0 to disable. + */ +#ifndef LCP_ECHOINTERVAL +#define LCP_ECHOINTERVAL 0 +#endif + +/** + * LCP_MAXECHOFAILS: Number of unanswered echo requests before failure. + */ +#ifndef LCP_MAXECHOFAILS +#define LCP_MAXECHOFAILS 3 +#endif + +/** + * PPP_MAXIDLEFLAG: Max Xmit idle time (in ms) before resend flag char. + */ +#ifndef PPP_MAXIDLEFLAG +#define PPP_MAXIDLEFLAG 100 +#endif + +/** + * PPP Packet sizes + */ + +/** + * PPP_MRU: Default MRU + */ +#ifndef PPP_MRU +#define PPP_MRU 1500 +#endif + +/** + * PPP_DEFMRU: Default MRU to try + */ +#ifndef PPP_DEFMRU +#define PPP_DEFMRU 1500 +#endif + +/** + * PPP_MAXMRU: Normally limit MRU to this (pppd default = 16384) + */ +#ifndef PPP_MAXMRU +#define PPP_MAXMRU 1500 +#endif + +/** + * PPP_MINMRU: No MRUs below this + */ +#ifndef PPP_MINMRU +#define PPP_MINMRU 128 +#endif + +/** + * PPPOL2TP_DEFMRU: Default MTU and MRU for L2TP + * Default = 1500 - PPPoE(6) - PPP Protocol(2) - IPv4 header(20) - UDP Header(8) + * - L2TP Header(6) - HDLC Header(2) - PPP Protocol(2) - MPPE Header(2) - PPP Protocol(2) + */ +#if PPPOL2TP_SUPPORT +#ifndef PPPOL2TP_DEFMRU +#define PPPOL2TP_DEFMRU 1450 +#endif +#endif /* PPPOL2TP_SUPPORT */ + +/** + * MAXNAMELEN: max length of hostname or name for auth + */ +#ifndef MAXNAMELEN +#define MAXNAMELEN 256 +#endif + +/** + * MAXSECRETLEN: max length of password or secret + */ +#ifndef MAXSECRETLEN +#define MAXSECRETLEN 256 +#endif + +/* ------------------------------------------------------------------------- */ + +/* + * Build triggers for embedded PolarSSL + */ +#if !LWIP_USE_EXTERNAL_POLARSSL && !LWIP_USE_EXTERNAL_MBEDTLS + +/* CHAP, EAP, L2TP AUTH and MD5 Random require MD5 support */ +#if CHAP_SUPPORT || EAP_SUPPORT || PPPOL2TP_AUTH_SUPPORT || PPP_MD5_RANDM +#define LWIP_INCLUDED_POLARSSL_MD5 1 +#endif /* CHAP_SUPPORT || EAP_SUPPORT || PPPOL2TP_AUTH_SUPPORT || PPP_MD5_RANDM */ + +#if MSCHAP_SUPPORT + +/* MSCHAP require MD4 support */ +#define LWIP_INCLUDED_POLARSSL_MD4 1 +/* MSCHAP require SHA1 support */ +#define LWIP_INCLUDED_POLARSSL_SHA1 1 +/* MSCHAP require DES support */ +#define LWIP_INCLUDED_POLARSSL_DES 1 + +/* MS-CHAP support is required for MPPE */ +#if MPPE_SUPPORT +/* MPPE require ARC4 support */ +#define LWIP_INCLUDED_POLARSSL_ARC4 1 +#endif /* MPPE_SUPPORT */ + +#endif /* MSCHAP_SUPPORT */ + +#endif /* !LWIP_USE_EXTERNAL_POLARSSL && !LWIP_USE_EXTERNAL_MBEDTLS */ + +/* Default value if unset */ +#ifndef LWIP_INCLUDED_POLARSSL_MD4 +#define LWIP_INCLUDED_POLARSSL_MD4 0 +#endif /* LWIP_INCLUDED_POLARSSL_MD4 */ +#ifndef LWIP_INCLUDED_POLARSSL_MD5 +#define LWIP_INCLUDED_POLARSSL_MD5 0 +#endif /* LWIP_INCLUDED_POLARSSL_MD5 */ +#ifndef LWIP_INCLUDED_POLARSSL_SHA1 +#define LWIP_INCLUDED_POLARSSL_SHA1 0 +#endif /* LWIP_INCLUDED_POLARSSL_SHA1 */ +#ifndef LWIP_INCLUDED_POLARSSL_DES +#define LWIP_INCLUDED_POLARSSL_DES 0 +#endif /* LWIP_INCLUDED_POLARSSL_DES */ +#ifndef LWIP_INCLUDED_POLARSSL_ARC4 +#define LWIP_INCLUDED_POLARSSL_ARC4 0 +#endif /* LWIP_INCLUDED_POLARSSL_ARC4 */ + +#endif /* PPP_SUPPORT */ + +/* Default value if unset */ +#ifndef PPP_NUM_TIMEOUTS +#define PPP_NUM_TIMEOUTS 0 +#endif /* PPP_NUM_TIMEOUTS */ + +#endif /* LWIP_PPP_OPTS_H */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/pppapi.h b/Other/tun2socks/core/c/include/netif/ppp/pppapi.h new file mode 100644 index 0000000..913d93f --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/pppapi.h @@ -0,0 +1,137 @@ +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#ifndef LWIP_PPPAPI_H +#define LWIP_PPPAPI_H + +#include "netif/ppp/ppp_opts.h" + +#if LWIP_PPP_API /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/sys.h" +#include "lwip/netif.h" +#include "lwip/priv/tcpip_priv.h" +#include "netif/ppp/ppp.h" +#if PPPOS_SUPPORT +#include "netif/ppp/pppos.h" +#endif /* PPPOS_SUPPORT */ + +#ifdef __cplusplus +extern "C" { +#endif + +struct pppapi_msg_msg { + ppp_pcb *ppp; + union { +#if PPP_NOTIFY_PHASE + struct { + ppp_notify_phase_cb_fn notify_phase_cb; + } setnotifyphasecb; +#endif /* PPP_NOTIFY_PHASE */ +#if PPPOS_SUPPORT + struct { + struct netif *pppif; + pppos_output_cb_fn output_cb; + ppp_link_status_cb_fn link_status_cb; + void *ctx_cb; + } serialcreate; +#endif /* PPPOS_SUPPORT */ +#if PPPOE_SUPPORT + struct { + struct netif *pppif; + struct netif *ethif; + const char *service_name; + const char *concentrator_name; + ppp_link_status_cb_fn link_status_cb; + void *ctx_cb; + } ethernetcreate; +#endif /* PPPOE_SUPPORT */ +#if PPPOL2TP_SUPPORT + struct { + struct netif *pppif; + struct netif *netif; + API_MSG_M_DEF_C(ip_addr_t, ipaddr); + u16_t port; +#if PPPOL2TP_AUTH_SUPPORT + const u8_t *secret; + u8_t secret_len; +#endif /* PPPOL2TP_AUTH_SUPPORT */ + ppp_link_status_cb_fn link_status_cb; + void *ctx_cb; + } l2tpcreate; +#endif /* PPPOL2TP_SUPPORT */ + struct { + u16_t holdoff; + } connect; + struct { + u8_t nocarrier; + } close; + struct { + u8_t cmd; + void *arg; + } ioctl; + } msg; +}; + +struct pppapi_msg { + struct tcpip_api_call_data call; + struct pppapi_msg_msg msg; +}; + +/* API for application */ +err_t pppapi_set_default(ppp_pcb *pcb); +#if PPP_NOTIFY_PHASE +err_t pppapi_set_notify_phase_callback(ppp_pcb *pcb, ppp_notify_phase_cb_fn notify_phase_cb); +#endif /* PPP_NOTIFY_PHASE */ +#if PPPOS_SUPPORT +ppp_pcb *pppapi_pppos_create(struct netif *pppif, pppos_output_cb_fn output_cb, ppp_link_status_cb_fn link_status_cb, void *ctx_cb); +#endif /* PPPOS_SUPPORT */ +#if PPPOE_SUPPORT +ppp_pcb *pppapi_pppoe_create(struct netif *pppif, struct netif *ethif, const char *service_name, + const char *concentrator_name, ppp_link_status_cb_fn link_status_cb, + void *ctx_cb); +#endif /* PPPOE_SUPPORT */ +#if PPPOL2TP_SUPPORT +ppp_pcb *pppapi_pppol2tp_create(struct netif *pppif, struct netif *netif, ip_addr_t *ipaddr, u16_t port, + const u8_t *secret, u8_t secret_len, + ppp_link_status_cb_fn link_status_cb, void *ctx_cb); +#endif /* PPPOL2TP_SUPPORT */ +err_t pppapi_connect(ppp_pcb *pcb, u16_t holdoff); +#if PPP_SERVER +err_t pppapi_listen(ppp_pcb *pcb); +#endif /* PPP_SERVER */ +err_t pppapi_close(ppp_pcb *pcb, u8_t nocarrier); +err_t pppapi_free(ppp_pcb *pcb); +err_t pppapi_ioctl(ppp_pcb *pcb, u8_t cmd, void *arg); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_PPP_API */ + +#endif /* LWIP_PPPAPI_H */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/pppcrypt.h b/Other/tun2socks/core/c/include/netif/ppp/pppcrypt.h new file mode 100644 index 0000000..c0230bb --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/pppcrypt.h @@ -0,0 +1,144 @@ +/* + * pppcrypt.c - PPP/DES linkage for MS-CHAP and EAP SRP-SHA1 + * + * Extracted from chap_ms.c by James Carlson. + * + * Copyright (c) 1995 Eric Rosenquist. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name(s) of the authors of this software must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +/* This header file is included in all PPP modules needing hashes and/or ciphers */ + +#ifndef PPPCRYPT_H +#define PPPCRYPT_H + +/* + * If included PolarSSL copy is not used, user is expected to include + * external libraries in arch/cc.h (which is included by lwip/arch.h). + */ +#include "lwip/arch.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Map hashes and ciphers functions to PolarSSL + */ +#if !LWIP_USE_EXTERNAL_MBEDTLS + +#include "netif/ppp/polarssl/md4.h" +#define lwip_md4_context md4_context +#define lwip_md4_init(context) +#define lwip_md4_starts md4_starts +#define lwip_md4_update md4_update +#define lwip_md4_finish md4_finish +#define lwip_md4_free(context) + +#include "netif/ppp/polarssl/md5.h" +#define lwip_md5_context md5_context +#define lwip_md5_init(context) +#define lwip_md5_starts md5_starts +#define lwip_md5_update md5_update +#define lwip_md5_finish md5_finish +#define lwip_md5_free(context) + +#include "netif/ppp/polarssl/sha1.h" +#define lwip_sha1_context sha1_context +#define lwip_sha1_init(context) +#define lwip_sha1_starts sha1_starts +#define lwip_sha1_update sha1_update +#define lwip_sha1_finish sha1_finish +#define lwip_sha1_free(context) + +#include "netif/ppp/polarssl/des.h" +#define lwip_des_context des_context +#define lwip_des_init(context) +#define lwip_des_setkey_enc des_setkey_enc +#define lwip_des_crypt_ecb des_crypt_ecb +#define lwip_des_free(context) + +#include "netif/ppp/polarssl/arc4.h" +#define lwip_arc4_context arc4_context +#define lwip_arc4_init(context) +#define lwip_arc4_setup arc4_setup +#define lwip_arc4_crypt arc4_crypt +#define lwip_arc4_free(context) + +#endif /* !LWIP_USE_EXTERNAL_MBEDTLS */ + +/* + * Map hashes and ciphers functions to mbed TLS + */ +#if LWIP_USE_EXTERNAL_MBEDTLS + +#define lwip_md4_context mbedtls_md4_context +#define lwip_md4_init mbedtls_md4_init +#define lwip_md4_starts mbedtls_md4_starts +#define lwip_md4_update mbedtls_md4_update +#define lwip_md4_finish mbedtls_md4_finish +#define lwip_md4_free mbedtls_md4_free + +#define lwip_md5_context mbedtls_md5_context +#define lwip_md5_init mbedtls_md5_init +#define lwip_md5_starts mbedtls_md5_starts +#define lwip_md5_update mbedtls_md5_update +#define lwip_md5_finish mbedtls_md5_finish +#define lwip_md5_free mbedtls_md5_free + +#define lwip_sha1_context mbedtls_sha1_context +#define lwip_sha1_init mbedtls_sha1_init +#define lwip_sha1_starts mbedtls_sha1_starts +#define lwip_sha1_update mbedtls_sha1_update +#define lwip_sha1_finish mbedtls_sha1_finish +#define lwip_sha1_free mbedtls_sha1_free + +#define lwip_des_context mbedtls_des_context +#define lwip_des_init mbedtls_des_init +#define lwip_des_setkey_enc mbedtls_des_setkey_enc +#define lwip_des_crypt_ecb mbedtls_des_crypt_ecb +#define lwip_des_free mbedtls_des_free + +#define lwip_arc4_context mbedtls_arc4_context +#define lwip_arc4_init mbedtls_arc4_init +#define lwip_arc4_setup mbedtls_arc4_setup +#define lwip_arc4_crypt(context, buffer, length) mbedtls_arc4_crypt(context, length, buffer, buffer) +#define lwip_arc4_free mbedtls_arc4_free + +#endif /* LWIP_USE_EXTERNAL_MBEDTLS */ + +void pppcrypt_56_to_64_bit_key(u_char *key, u_char *des_key); + +#ifdef __cplusplus +} +#endif + +#endif /* PPPCRYPT_H */ + +#endif /* PPP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/pppdebug.h b/Other/tun2socks/core/c/include/netif/ppp/pppdebug.h new file mode 100644 index 0000000..36ee4f9 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/pppdebug.h @@ -0,0 +1,88 @@ +/***************************************************************************** +* pppdebug.h - System debugging utilities. +* +* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. +* portions Copyright (c) 1998 Global Election Systems Inc. +* portions Copyright (c) 2001 by Cognizant Pty Ltd. +* +* The authors hereby grant permission to use, copy, modify, distribute, +* and license this software and its documentation for any purpose, provided +* that existing copyright notices are retained in all copies and that this +* notice and the following disclaimer are included verbatim in any +* distributions. No written agreement, license, or royalty fee is required +* for any of the authorized uses. +* +* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR +* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +****************************************************************************** +* REVISION HISTORY (please don't use tabs!) +* +* 03-01-01 Marc Boucher +* Ported to lwIP. +* 98-07-29 Guy Lancaster , Global Election Systems Inc. +* Original. +* +***************************************************************************** +*/ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef PPPDEBUG_H +#define PPPDEBUG_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* Trace levels. */ +#define LOG_CRITICAL (PPP_DEBUG | LWIP_DBG_LEVEL_SEVERE) +#define LOG_ERR (PPP_DEBUG | LWIP_DBG_LEVEL_SEVERE) +#define LOG_NOTICE (PPP_DEBUG | LWIP_DBG_LEVEL_WARNING) +#define LOG_WARNING (PPP_DEBUG | LWIP_DBG_LEVEL_WARNING) +#define LOG_INFO (PPP_DEBUG) +#define LOG_DETAIL (PPP_DEBUG) +#define LOG_DEBUG (PPP_DEBUG) + +#if PPP_DEBUG + +#define MAINDEBUG(a) LWIP_DEBUGF(LWIP_DBG_LEVEL_WARNING, a) +#define SYSDEBUG(a) LWIP_DEBUGF(LWIP_DBG_LEVEL_WARNING, a) +#define FSMDEBUG(a) LWIP_DEBUGF(LWIP_DBG_LEVEL_WARNING, a) +#define LCPDEBUG(a) LWIP_DEBUGF(LWIP_DBG_LEVEL_WARNING, a) +#define IPCPDEBUG(a) LWIP_DEBUGF(LWIP_DBG_LEVEL_WARNING, a) +#define IPV6CPDEBUG(a) LWIP_DEBUGF(LWIP_DBG_LEVEL_WARNING, a) +#define UPAPDEBUG(a) LWIP_DEBUGF(LWIP_DBG_LEVEL_WARNING, a) +#define CHAPDEBUG(a) LWIP_DEBUGF(LWIP_DBG_LEVEL_WARNING, a) +#define PPPDEBUG(a, b) LWIP_DEBUGF(a, b) + +#else /* PPP_DEBUG */ + +#define MAINDEBUG(a) +#define SYSDEBUG(a) +#define FSMDEBUG(a) +#define LCPDEBUG(a) +#define IPCPDEBUG(a) +#define IPV6CPDEBUG(a) +#define UPAPDEBUG(a) +#define CHAPDEBUG(a) +#define PPPDEBUG(a, b) + +#endif /* PPP_DEBUG */ + +#ifdef __cplusplus +} +#endif + +#endif /* PPPDEBUG_H */ + +#endif /* PPP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/pppoe.h b/Other/tun2socks/core/c/include/netif/ppp/pppoe.h new file mode 100644 index 0000000..08ab7ab --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/pppoe.h @@ -0,0 +1,187 @@ +/***************************************************************************** +* pppoe.h - PPP Over Ethernet implementation for lwIP. +* +* Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc. +* +* The authors hereby grant permission to use, copy, modify, distribute, +* and license this software and its documentation for any purpose, provided +* that existing copyright notices are retained in all copies and that this +* notice and the following disclaimer are included verbatim in any +* distributions. No written agreement, license, or royalty fee is required +* for any of the authorized uses. +* +* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR +* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +****************************************************************************** +* REVISION HISTORY +* +* 06-01-01 Marc Boucher +* Ported to lwIP. +*****************************************************************************/ + + + +/* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */ + +/*- + * Copyright (c) 2002 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Martin Husemann . + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef PPP_OE_H +#define PPP_OE_H + +#include "ppp.h" +#include "lwip/etharp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct pppoehdr { + PACK_STRUCT_FLD_8(u8_t vertype); + PACK_STRUCT_FLD_8(u8_t code); + PACK_STRUCT_FIELD(u16_t session); + PACK_STRUCT_FIELD(u16_t plen); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/bpstruct.h" +#endif +PACK_STRUCT_BEGIN +struct pppoetag { + PACK_STRUCT_FIELD(u16_t tag); + PACK_STRUCT_FIELD(u16_t len); +} PACK_STRUCT_STRUCT; +PACK_STRUCT_END +#ifdef PACK_STRUCT_USE_INCLUDES +# include "arch/epstruct.h" +#endif + + +#define PPPOE_STATE_INITIAL 0 +#define PPPOE_STATE_PADI_SENT 1 +#define PPPOE_STATE_PADR_SENT 2 +#define PPPOE_STATE_SESSION 3 +/* passive */ +#define PPPOE_STATE_PADO_SENT 1 + +#define PPPOE_HEADERLEN sizeof(struct pppoehdr) +#define PPPOE_VERTYPE 0x11 /* VER=1, TYPE = 1 */ + +#define PPPOE_TAG_EOL 0x0000 /* end of list */ +#define PPPOE_TAG_SNAME 0x0101 /* service name */ +#define PPPOE_TAG_ACNAME 0x0102 /* access concentrator name */ +#define PPPOE_TAG_HUNIQUE 0x0103 /* host unique */ +#define PPPOE_TAG_ACCOOKIE 0x0104 /* AC cookie */ +#define PPPOE_TAG_VENDOR 0x0105 /* vendor specific */ +#define PPPOE_TAG_RELAYSID 0x0110 /* relay session id */ +#define PPPOE_TAG_SNAME_ERR 0x0201 /* service name error */ +#define PPPOE_TAG_ACSYS_ERR 0x0202 /* AC system error */ +#define PPPOE_TAG_GENERIC_ERR 0x0203 /* gerneric error */ + +#define PPPOE_CODE_PADI 0x09 /* Active Discovery Initiation */ +#define PPPOE_CODE_PADO 0x07 /* Active Discovery Offer */ +#define PPPOE_CODE_PADR 0x19 /* Active Discovery Request */ +#define PPPOE_CODE_PADS 0x65 /* Active Discovery Session confirmation */ +#define PPPOE_CODE_PADT 0xA7 /* Active Discovery Terminate */ + +#ifndef PPPOE_MAX_AC_COOKIE_LEN +#define PPPOE_MAX_AC_COOKIE_LEN 64 +#endif + +struct pppoe_softc { + struct pppoe_softc *next; + struct netif *sc_ethif; /* ethernet interface we are using */ + ppp_pcb *pcb; /* PPP PCB */ + + struct eth_addr sc_dest; /* hardware address of concentrator */ + u16_t sc_session; /* PPPoE session id */ + u8_t sc_state; /* discovery phase or session connected */ + +#ifdef PPPOE_TODO + u8_t *sc_service_name; /* if != NULL: requested name of service */ + u8_t *sc_concentrator_name; /* if != NULL: requested concentrator id */ +#endif /* PPPOE_TODO */ + u8_t sc_ac_cookie[PPPOE_MAX_AC_COOKIE_LEN]; /* content of AC cookie we must echo back */ + u8_t sc_ac_cookie_len; /* length of cookie data */ +#ifdef PPPOE_SERVER + u8_t *sc_hunique; /* content of host unique we must echo back */ + u8_t sc_hunique_len; /* length of host unique */ +#endif + u8_t sc_padi_retried; /* number of PADI retries already done */ + u8_t sc_padr_retried; /* number of PADR retries already done */ +}; + + +#define pppoe_init() /* compatibility define, no initialization needed */ + +ppp_pcb *pppoe_create(struct netif *pppif, + struct netif *ethif, + const char *service_name, const char *concentrator_name, + ppp_link_status_cb_fn link_status_cb, void *ctx_cb); + +/* + * Functions called from lwIP + * DO NOT CALL FROM lwIP USER APPLICATION. + */ +void pppoe_disc_input(struct netif *netif, struct pbuf *p); +void pppoe_data_input(struct netif *netif, struct pbuf *p); + +#ifdef __cplusplus +} +#endif + +#endif /* PPP_OE_H */ + +#endif /* PPP_SUPPORT && PPPOE_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/pppol2tp.h b/Other/tun2socks/core/c/include/netif/ppp/pppol2tp.h new file mode 100644 index 0000000..1221ca1 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/pppol2tp.h @@ -0,0 +1,209 @@ +/** + * @file + * Network Point to Point Protocol over Layer 2 Tunneling Protocol header file. + * + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && PPPOL2TP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef PPPOL2TP_H +#define PPPOL2TP_H + +#include "ppp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Timeout */ +#define PPPOL2TP_CONTROL_TIMEOUT (5*1000) /* base for quick timeout calculation */ +#define PPPOL2TP_SLOW_RETRY (60*1000) /* persistent retry interval */ + +#define PPPOL2TP_MAXSCCRQ 4 /* retry SCCRQ four times (quickly) */ +#define PPPOL2TP_MAXICRQ 4 /* retry IRCQ four times */ +#define PPPOL2TP_MAXICCN 4 /* retry ICCN four times */ + +/* L2TP header flags */ +#define PPPOL2TP_HEADERFLAG_CONTROL 0x8000 +#define PPPOL2TP_HEADERFLAG_LENGTH 0x4000 +#define PPPOL2TP_HEADERFLAG_SEQUENCE 0x0800 +#define PPPOL2TP_HEADERFLAG_OFFSET 0x0200 +#define PPPOL2TP_HEADERFLAG_PRIORITY 0x0100 +#define PPPOL2TP_HEADERFLAG_VERSION 0x0002 + +/* Mandatory bits for control: Control, Length, Sequence, Version 2 */ +#define PPPOL2TP_HEADERFLAG_CONTROL_MANDATORY (PPPOL2TP_HEADERFLAG_CONTROL|PPPOL2TP_HEADERFLAG_LENGTH|PPPOL2TP_HEADERFLAG_SEQUENCE|PPPOL2TP_HEADERFLAG_VERSION) +/* Forbidden bits for control: Offset, Priority */ +#define PPPOL2TP_HEADERFLAG_CONTROL_FORBIDDEN (PPPOL2TP_HEADERFLAG_OFFSET|PPPOL2TP_HEADERFLAG_PRIORITY) + +/* Mandatory bits for data: Version 2 */ +#define PPPOL2TP_HEADERFLAG_DATA_MANDATORY (PPPOL2TP_HEADERFLAG_VERSION) + +/* AVP (Attribute Value Pair) header */ +#define PPPOL2TP_AVPHEADERFLAG_MANDATORY 0x8000 +#define PPPOL2TP_AVPHEADERFLAG_HIDDEN 0x4000 +#define PPPOL2TP_AVPHEADERFLAG_LENGTHMASK 0x03ff + +/* -- AVP - Message type */ +#define PPPOL2TP_AVPTYPE_MESSAGE 0 /* Message type */ + +/* Control Connection Management */ +#define PPPOL2TP_MESSAGETYPE_SCCRQ 1 /* Start Control Connection Request */ +#define PPPOL2TP_MESSAGETYPE_SCCRP 2 /* Start Control Connection Reply */ +#define PPPOL2TP_MESSAGETYPE_SCCCN 3 /* Start Control Connection Connected */ +#define PPPOL2TP_MESSAGETYPE_STOPCCN 4 /* Stop Control Connection Notification */ +#define PPPOL2TP_MESSAGETYPE_HELLO 6 /* Hello */ +/* Call Management */ +#define PPPOL2TP_MESSAGETYPE_OCRQ 7 /* Outgoing Call Request */ +#define PPPOL2TP_MESSAGETYPE_OCRP 8 /* Outgoing Call Reply */ +#define PPPOL2TP_MESSAGETYPE_OCCN 9 /* Outgoing Call Connected */ +#define PPPOL2TP_MESSAGETYPE_ICRQ 10 /* Incoming Call Request */ +#define PPPOL2TP_MESSAGETYPE_ICRP 11 /* Incoming Call Reply */ +#define PPPOL2TP_MESSAGETYPE_ICCN 12 /* Incoming Call Connected */ +#define PPPOL2TP_MESSAGETYPE_CDN 14 /* Call Disconnect Notify */ +/* Error reporting */ +#define PPPOL2TP_MESSAGETYPE_WEN 15 /* WAN Error Notify */ +/* PPP Session Control */ +#define PPPOL2TP_MESSAGETYPE_SLI 16 /* Set Link Info */ + +/* -- AVP - Result code */ +#define PPPOL2TP_AVPTYPE_RESULTCODE 1 /* Result code */ +#define PPPOL2TP_RESULTCODE 1 /* General request to clear control connection */ + +/* -- AVP - Protocol version (!= L2TP Header version) */ +#define PPPOL2TP_AVPTYPE_VERSION 2 +#define PPPOL2TP_VERSION 0x0100 /* L2TP Protocol version 1, revision 0 */ + +/* -- AVP - Framing capabilities */ +#define PPPOL2TP_AVPTYPE_FRAMINGCAPABILITIES 3 /* Bearer capabilities */ +#define PPPOL2TP_FRAMINGCAPABILITIES 0x00000003 /* Async + Sync framing */ + +/* -- AVP - Bearer capabilities */ +#define PPPOL2TP_AVPTYPE_BEARERCAPABILITIES 4 /* Bearer capabilities */ +#define PPPOL2TP_BEARERCAPABILITIES 0x00000003 /* Analog + Digital Access */ + +/* -- AVP - Tie breaker */ +#define PPPOL2TP_AVPTYPE_TIEBREAKER 5 + +/* -- AVP - Host name */ +#define PPPOL2TP_AVPTYPE_HOSTNAME 7 /* Host name */ +#define PPPOL2TP_HOSTNAME "lwIP" /* FIXME: make it configurable */ + +/* -- AVP - Vendor name */ +#define PPPOL2TP_AVPTYPE_VENDORNAME 8 /* Vendor name */ +#define PPPOL2TP_VENDORNAME "lwIP" /* FIXME: make it configurable */ + +/* -- AVP - Assign tunnel ID */ +#define PPPOL2TP_AVPTYPE_TUNNELID 9 /* Assign Tunnel ID */ + +/* -- AVP - Receive window size */ +#define PPPOL2TP_AVPTYPE_RECEIVEWINDOWSIZE 10 /* Receive window size */ +#define PPPOL2TP_RECEIVEWINDOWSIZE 8 /* FIXME: make it configurable */ + +/* -- AVP - Challenge */ +#define PPPOL2TP_AVPTYPE_CHALLENGE 11 /* Challenge */ + +/* -- AVP - Cause code */ +#define PPPOL2TP_AVPTYPE_CAUSECODE 12 /* Cause code*/ + +/* -- AVP - Challenge response */ +#define PPPOL2TP_AVPTYPE_CHALLENGERESPONSE 13 /* Challenge response */ +#define PPPOL2TP_AVPTYPE_CHALLENGERESPONSE_SIZE 16 + +/* -- AVP - Assign session ID */ +#define PPPOL2TP_AVPTYPE_SESSIONID 14 /* Assign Session ID */ + +/* -- AVP - Call serial number */ +#define PPPOL2TP_AVPTYPE_CALLSERIALNUMBER 15 /* Call Serial Number */ + +/* -- AVP - Framing type */ +#define PPPOL2TP_AVPTYPE_FRAMINGTYPE 19 /* Framing Type */ +#define PPPOL2TP_FRAMINGTYPE 0x00000001 /* Sync framing */ + +/* -- AVP - TX Connect Speed */ +#define PPPOL2TP_AVPTYPE_TXCONNECTSPEED 24 /* TX Connect Speed */ +#define PPPOL2TP_TXCONNECTSPEED 100000000 /* Connect speed: 100 Mbits/s */ + +/* L2TP Session state */ +#define PPPOL2TP_STATE_INITIAL 0 +#define PPPOL2TP_STATE_SCCRQ_SENT 1 +#define PPPOL2TP_STATE_ICRQ_SENT 2 +#define PPPOL2TP_STATE_ICCN_SENT 3 +#define PPPOL2TP_STATE_DATA 4 + +#define PPPOL2TP_OUTPUT_DATA_HEADER_LEN 6 /* Our data header len */ + +/* + * PPPoL2TP interface control block. + */ +typedef struct pppol2tp_pcb_s pppol2tp_pcb; +struct pppol2tp_pcb_s { + ppp_pcb *ppp; /* PPP PCB */ + u8_t phase; /* L2TP phase */ + struct udp_pcb *udp; /* UDP L2TP Socket */ + struct netif *netif; /* Output interface, used as a default route */ + ip_addr_t remote_ip; /* LNS IP Address */ + u16_t remote_port; /* LNS port */ +#if PPPOL2TP_AUTH_SUPPORT + const u8_t *secret; /* Secret string */ + u8_t secret_len; /* Secret string length */ + u8_t secret_rv[16]; /* Random vector */ + u8_t challenge_hash[16]; /* Challenge response */ + u8_t send_challenge; /* Boolean whether the next sent packet should contains a challenge response */ +#endif /* PPPOL2TP_AUTH_SUPPORT */ + + u16_t tunnel_port; /* Tunnel port */ + u16_t our_ns; /* NS to peer */ + u16_t peer_nr; /* NR from peer */ + u16_t peer_ns; /* Expected NS from peer */ + u16_t source_tunnel_id; /* Tunnel ID assigned by peer */ + u16_t remote_tunnel_id; /* Tunnel ID assigned to peer */ + u16_t source_session_id; /* Session ID assigned by peer */ + u16_t remote_session_id; /* Session ID assigned to peer */ + + u8_t sccrq_retried; /* number of SCCRQ retries already done */ + u8_t icrq_retried; /* number of ICRQ retries already done */ + u8_t iccn_retried; /* number of ICCN retries already done */ +}; + + +/* Create a new L2TP session. */ +ppp_pcb *pppol2tp_create(struct netif *pppif, + struct netif *netif, const ip_addr_t *ipaddr, u16_t port, + const u8_t *secret, u8_t secret_len, + ppp_link_status_cb_fn link_status_cb, void *ctx_cb); + +#ifdef __cplusplus +} +#endif + +#endif /* PPPOL2TP_H */ +#endif /* PPP_SUPPORT && PPPOL2TP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/pppos.h b/Other/tun2socks/core/c/include/netif/ppp/pppos.h new file mode 100644 index 0000000..380a965 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/pppos.h @@ -0,0 +1,126 @@ +/** + * @file + * Network Point to Point Protocol over Serial header file. + * + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && PPPOS_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef PPPOS_H +#define PPPOS_H + +#include "lwip/sys.h" + +#include "ppp.h" +#include "vj.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* PPP packet parser states. Current state indicates operation yet to be + * completed. */ +enum { + PDIDLE = 0, /* Idle state - waiting. */ + PDSTART, /* Process start flag. */ + PDADDRESS, /* Process address field. */ + PDCONTROL, /* Process control field. */ + PDPROTOCOL1, /* Process protocol field 1. */ + PDPROTOCOL2, /* Process protocol field 2. */ + PDDATA /* Process data byte. */ +}; + +/* PPPoS serial output callback function prototype */ +typedef u32_t (*pppos_output_cb_fn)(ppp_pcb *pcb, u8_t *data, u32_t len, void *ctx); + +/* + * Extended asyncmap - allows any character to be escaped. + */ +typedef u8_t ext_accm[32]; + +/* + * PPPoS interface control block. + */ +typedef struct pppos_pcb_s pppos_pcb; +struct pppos_pcb_s { + /* -- below are data that will NOT be cleared between two sessions */ + ppp_pcb *ppp; /* PPP PCB */ + pppos_output_cb_fn output_cb; /* PPP serial output callback */ + + /* -- below are data that will be cleared between two sessions + * + * last_xmit must be the first member of cleared members, because it is + * used to know which part must not be cleared. + */ + u32_t last_xmit; /* Time of last transmission. */ + ext_accm out_accm; /* Async-Ctl-Char-Map for output. */ + + /* flags */ + unsigned int open :1; /* Set if PPPoS is open */ + unsigned int pcomp :1; /* Does peer accept protocol compression? */ + unsigned int accomp :1; /* Does peer accept addr/ctl compression? */ + + /* PPPoS rx */ + ext_accm in_accm; /* Async-Ctl-Char-Map for input. */ + struct pbuf *in_head, *in_tail; /* The input packet. */ + u16_t in_protocol; /* The input protocol code. */ + u16_t in_fcs; /* Input Frame Check Sequence value. */ + u8_t in_state; /* The input process state. */ + u8_t in_escaped; /* Escape next character. */ +}; + +/* Create a new PPPoS session. */ +ppp_pcb *pppos_create(struct netif *pppif, pppos_output_cb_fn output_cb, + ppp_link_status_cb_fn link_status_cb, void *ctx_cb); + +#if !NO_SYS && !PPP_INPROC_IRQ_SAFE +/* Pass received raw characters to PPPoS to be decoded through lwIP TCPIP thread. */ +err_t pppos_input_tcpip(ppp_pcb *ppp, u8_t *s, int l); +#endif /* !NO_SYS && !PPP_INPROC_IRQ_SAFE */ + +/* PPP over Serial: this is the input function to be called for received data. */ +void pppos_input(ppp_pcb *ppp, u8_t* data, int len); + + +/* + * Functions called from lwIP + * DO NOT CALL FROM lwIP USER APPLICATION. + */ +#if !NO_SYS && !PPP_INPROC_IRQ_SAFE +err_t pppos_input_sys(struct pbuf *p, struct netif *inp); +#endif /* !NO_SYS && !PPP_INPROC_IRQ_SAFE */ + +#ifdef __cplusplus +} +#endif + +#endif /* PPPOS_H */ +#endif /* PPP_SUPPORT && PPPOL2TP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/upap.h b/Other/tun2socks/core/c/include/netif/ppp/upap.h new file mode 100644 index 0000000..540d981 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/upap.h @@ -0,0 +1,131 @@ +/* + * upap.h - User/Password Authentication Protocol definitions. + * + * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The name "Carnegie Mellon University" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For permission or any legal + * details, please contact + * Office of Technology Transfer + * Carnegie Mellon University + * 5000 Forbes Avenue + * Pittsburgh, PA 15213-3890 + * (412) 268-4387, fax: (412) 268-7395 + * tech-transfer@andrew.cmu.edu + * + * 4. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Computing Services + * at Carnegie Mellon University (http://www.cmu.edu/computing/)." + * + * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE + * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * $Id: upap.h,v 1.8 2002/12/04 23:03:33 paulus Exp $ + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && PAP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef UPAP_H +#define UPAP_H + +#include "ppp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Packet header = Code, id, length. + */ +#define UPAP_HEADERLEN 4 + + +/* + * UPAP codes. + */ +#define UPAP_AUTHREQ 1 /* Authenticate-Request */ +#define UPAP_AUTHACK 2 /* Authenticate-Ack */ +#define UPAP_AUTHNAK 3 /* Authenticate-Nak */ + + +/* + * Client states. + */ +#define UPAPCS_INITIAL 0 /* Connection down */ +#define UPAPCS_CLOSED 1 /* Connection up, haven't requested auth */ +#define UPAPCS_PENDING 2 /* Connection down, have requested auth */ +#define UPAPCS_AUTHREQ 3 /* We've sent an Authenticate-Request */ +#define UPAPCS_OPEN 4 /* We've received an Ack */ +#define UPAPCS_BADAUTH 5 /* We've received a Nak */ + +/* + * Server states. + */ +#define UPAPSS_INITIAL 0 /* Connection down */ +#define UPAPSS_CLOSED 1 /* Connection up, haven't requested auth */ +#define UPAPSS_PENDING 2 /* Connection down, have requested auth */ +#define UPAPSS_LISTEN 3 /* Listening for an Authenticate */ +#define UPAPSS_OPEN 4 /* We've sent an Ack */ +#define UPAPSS_BADAUTH 5 /* We've sent a Nak */ + + +/* + * Timeouts. + */ +#if 0 /* moved to ppp_opts.h */ +#define UPAP_DEFTIMEOUT 3 /* Timeout (seconds) for retransmitting req */ +#define UPAP_DEFREQTIME 30 /* Time to wait for auth-req from peer */ +#endif /* moved to ppp_opts.h */ + +/* + * Each interface is described by upap structure. + */ +#if PAP_SUPPORT +typedef struct upap_state { + const char *us_user; /* User */ + u8_t us_userlen; /* User length */ + const char *us_passwd; /* Password */ + u8_t us_passwdlen; /* Password length */ + u8_t us_clientstate; /* Client state */ +#if PPP_SERVER + u8_t us_serverstate; /* Server state */ +#endif /* PPP_SERVER */ + u8_t us_id; /* Current id */ + u8_t us_transmits; /* Number of auth-reqs sent */ +} upap_state; +#endif /* PAP_SUPPORT */ + + +void upap_authwithpeer(ppp_pcb *pcb, const char *user, const char *password); +#if PPP_SERVER +void upap_authpeer(ppp_pcb *pcb); +#endif /* PPP_SERVER */ + +extern const struct protent pap_protent; + +#ifdef __cplusplus +} +#endif + +#endif /* UPAP_H */ +#endif /* PPP_SUPPORT && PAP_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/ppp/vj.h b/Other/tun2socks/core/c/include/netif/ppp/vj.h new file mode 100644 index 0000000..77d9976 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/ppp/vj.h @@ -0,0 +1,169 @@ +/* + * Definitions for tcp compression routines. + * + * $Id: vj.h,v 1.7 2010/02/22 17:52:09 goldsimon Exp $ + * + * Copyright (c) 1989 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by the University of California, Berkeley. The name of the + * University may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * Van Jacobson (van@helios.ee.lbl.gov), Dec 31, 1989: + * - Initial distribution. + */ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT && VJ_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef VJ_H +#define VJ_H + +#include "lwip/ip.h" +#include "lwip/priv/tcp_priv.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define MAX_SLOTS 16 /* must be > 2 and < 256 */ +#define MAX_HDR 128 + +/* + * Compressed packet format: + * + * The first octet contains the packet type (top 3 bits), TCP + * 'push' bit, and flags that indicate which of the 4 TCP sequence + * numbers have changed (bottom 5 bits). The next octet is a + * conversation number that associates a saved IP/TCP header with + * the compressed packet. The next two octets are the TCP checksum + * from the original datagram. The next 0 to 15 octets are + * sequence number changes, one change per bit set in the header + * (there may be no changes and there are two special cases where + * the receiver implicitly knows what changed -- see below). + * + * There are 5 numbers which can change (they are always inserted + * in the following order): TCP urgent pointer, window, + * acknowlegement, sequence number and IP ID. (The urgent pointer + * is different from the others in that its value is sent, not the + * change in value.) Since typical use of SLIP links is biased + * toward small packets (see comments on MTU/MSS below), changes + * use a variable length coding with one octet for numbers in the + * range 1 - 255 and 3 octets (0, MSB, LSB) for numbers in the + * range 256 - 65535 or 0. (If the change in sequence number or + * ack is more than 65535, an uncompressed packet is sent.) + */ + +/* + * Packet types (must not conflict with IP protocol version) + * + * The top nibble of the first octet is the packet type. There are + * three possible types: IP (not proto TCP or tcp with one of the + * control flags set); uncompressed TCP (a normal IP/TCP packet but + * with the 8-bit protocol field replaced by an 8-bit connection id -- + * this type of packet syncs the sender & receiver); and compressed + * TCP (described above). + * + * LSB of 4-bit field is TCP "PUSH" bit (a worthless anachronism) and + * is logically part of the 4-bit "changes" field that follows. Top + * three bits are actual packet type. For backward compatibility + * and in the interest of conserving bits, numbers are chosen so the + * IP protocol version number (4) which normally appears in this nibble + * means "IP packet". + */ + +/* packet types */ +#define TYPE_IP 0x40 +#define TYPE_UNCOMPRESSED_TCP 0x70 +#define TYPE_COMPRESSED_TCP 0x80 +#define TYPE_ERROR 0x00 + +/* Bits in first octet of compressed packet */ +#define NEW_C 0x40 /* flag bits for what changed in a packet */ +#define NEW_I 0x20 +#define NEW_S 0x08 +#define NEW_A 0x04 +#define NEW_W 0x02 +#define NEW_U 0x01 + +/* reserved, special-case values of above */ +#define SPECIAL_I (NEW_S|NEW_W|NEW_U) /* echoed interactive traffic */ +#define SPECIAL_D (NEW_S|NEW_A|NEW_W|NEW_U) /* unidirectional data */ +#define SPECIALS_MASK (NEW_S|NEW_A|NEW_W|NEW_U) + +#define TCP_PUSH_BIT 0x10 + + +/* + * "state" data for each active tcp conversation on the wire. This is + * basically a copy of the entire IP/TCP header from the last packet + * we saw from the conversation together with a small identifier + * the transmit & receive ends of the line use to locate saved header. + */ +struct cstate { + struct cstate *cs_next; /* next most recently used state (xmit only) */ + u16_t cs_hlen; /* size of hdr (receive only) */ + u8_t cs_id; /* connection # associated with this state */ + u8_t cs_filler; + union { + char csu_hdr[MAX_HDR]; + struct ip_hdr csu_ip; /* ip/tcp hdr from most recent packet */ + } vjcs_u; +}; +#define cs_ip vjcs_u.csu_ip +#define cs_hdr vjcs_u.csu_hdr + + +struct vjstat { + u32_t vjs_packets; /* outbound packets */ + u32_t vjs_compressed; /* outbound compressed packets */ + u32_t vjs_searches; /* searches for connection state */ + u32_t vjs_misses; /* times couldn't find conn. state */ + u32_t vjs_uncompressedin; /* inbound uncompressed packets */ + u32_t vjs_compressedin; /* inbound compressed packets */ + u32_t vjs_errorin; /* inbound unknown type packets */ + u32_t vjs_tossed; /* inbound packets tossed because of error */ +}; + +/* + * all the state data for one serial line (we need one of these per line). + */ +struct vjcompress { + struct cstate *last_cs; /* most recently used tstate */ + u8_t last_recv; /* last rcvd conn. id */ + u8_t last_xmit; /* last sent conn. id */ + u16_t flags; + u8_t maxSlotIndex; + u8_t compressSlot; /* Flag indicating OK to compress slot ID. */ +#if LINK_STATS + struct vjstat stats; +#endif + struct cstate tstate[MAX_SLOTS]; /* xmit connection states */ + struct cstate rstate[MAX_SLOTS]; /* receive connection states */ +}; + +/* flag values */ +#define VJF_TOSS 1U /* tossing rcvd frames because of input err */ + +extern void vj_compress_init (struct vjcompress *comp); +extern u8_t vj_compress_tcp (struct vjcompress *comp, struct pbuf **pb); +extern void vj_uncompress_err (struct vjcompress *comp); +extern int vj_uncompress_uncomp(struct pbuf *nb, struct vjcompress *comp); +extern int vj_uncompress_tcp (struct pbuf **nb, struct vjcompress *comp); + +#ifdef __cplusplus +} +#endif + +#endif /* VJ_H */ + +#endif /* PPP_SUPPORT && VJ_SUPPORT */ diff --git a/Other/tun2socks/core/c/include/netif/slipif.h b/Other/tun2socks/core/c/include/netif/slipif.h new file mode 100644 index 0000000..65ba31f --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/slipif.h @@ -0,0 +1,87 @@ +/** + * @file + * + * SLIP netif API + */ + +/* + * Copyright (c) 2001, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + */ +#ifndef LWIP_HDR_NETIF_SLIPIF_H +#define LWIP_HDR_NETIF_SLIPIF_H + +#include "lwip/opt.h" +#include "lwip/netif.h" + +/** Set this to 1 to start a thread that blocks reading on the serial line + * (using sio_read()). + */ +#ifndef SLIP_USE_RX_THREAD +#define SLIP_USE_RX_THREAD !NO_SYS +#endif + +/** Set this to 1 to enable functions to pass in RX bytes from ISR context. + * If enabled, slipif_received_byte[s]() process incoming bytes and put assembled + * packets on a queue, which is fed into lwIP from slipif_poll(). + * If disabled, slipif_poll() polls the serial line (using sio_tryread()). + */ +#ifndef SLIP_RX_FROM_ISR +#define SLIP_RX_FROM_ISR 0 +#endif + +/** Set this to 1 (default for SLIP_RX_FROM_ISR) to queue incoming packets + * received by slipif_received_byte[s]() as long as PBUF_POOL pbufs are available. + * If disabled, packets will be dropped if more than one packet is received. + */ +#ifndef SLIP_RX_QUEUE +#define SLIP_RX_QUEUE SLIP_RX_FROM_ISR +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +err_t slipif_init(struct netif * netif); +void slipif_poll(struct netif *netif); +#if SLIP_RX_FROM_ISR +void slipif_process_rxqueue(struct netif *netif); +void slipif_received_byte(struct netif *netif, u8_t data); +void slipif_received_bytes(struct netif *netif, u8_t *data, u8_t len); +#endif /* SLIP_RX_FROM_ISR */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_NETIF_SLIPIF_H */ + diff --git a/Other/tun2socks/core/c/include/netif/zepif.h b/Other/tun2socks/core/c/include/netif/zepif.h new file mode 100644 index 0000000..2a801b4 --- /dev/null +++ b/Other/tun2socks/core/c/include/netif/zepif.h @@ -0,0 +1,81 @@ +/** + * @file + * + * A netif implementing the ZigBee Eencapsulation Protocol (ZEP). + * This is used to tunnel 6LowPAN over UDP. + */ + +/* + * Copyright (c) 2018 Simon Goldschmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Simon Goldschmidt + * + */ + +#ifndef LWIP_HDR_ZEPIF_H +#define LWIP_HDR_ZEPIF_H + +#include "lwip/opt.h" +#include "netif/lowpan6.h" + +#if LWIP_IPV6 && LWIP_UDP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/netif.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define ZEPIF_DEFAULT_UDP_PORT 17754 + +/** Pass this struct as 'state' to netif_add to control the behaviour + * of this netif. If NULL is passed, default behaviour is chosen */ +struct zepif_init { + /** The UDP port used to ZEP frames from (0 = default) */ + u16_t zep_src_udp_port; + /** The UDP port used to ZEP frames to (0 = default) */ + u16_t zep_dst_udp_port; + /** The IP address to sed ZEP frames from (NULL = ANY) */ + const ip_addr_t *zep_src_ip_addr; + /** The IP address to sed ZEP frames to (NULL = BROADCAST) */ + const ip_addr_t *zep_dst_ip_addr; + /** If != NULL, the udp pcb is bound to this netif */ + const struct netif *zep_netif; + /** MAC address of the 6LowPAN device */ + u8_t addr[6]; +}; + +err_t zepif_init(struct netif *netif); + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV6 && LWIP_UDP */ + +#endif /* LWIP_HDR_ZEPIF_H */ diff --git a/Other/tun2socks/core/c/include/posix/errno.h b/Other/tun2socks/core/c/include/posix/errno.h new file mode 100644 index 0000000..5917c75 --- /dev/null +++ b/Other/tun2socks/core/c/include/posix/errno.h @@ -0,0 +1,33 @@ +/** + * @file + * This file is a posix wrapper for lwip/errno.h. + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "lwip/errno.h" diff --git a/Other/tun2socks/core/c/include/posix/netdb.h b/Other/tun2socks/core/c/include/posix/netdb.h new file mode 100644 index 0000000..12d4c7f --- /dev/null +++ b/Other/tun2socks/core/c/include/posix/netdb.h @@ -0,0 +1,33 @@ +/** + * @file + * This file is a posix wrapper for lwip/netdb.h. + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "lwip/netdb.h" diff --git a/Other/tun2socks/core/c/include/posix/sys/socket.h b/Other/tun2socks/core/c/include/posix/sys/socket.h new file mode 100644 index 0000000..0ed9baf --- /dev/null +++ b/Other/tun2socks/core/c/include/posix/sys/socket.h @@ -0,0 +1,33 @@ +/** + * @file + * This file is a posix wrapper for lwip/sockets.h. + */ + +/* + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + */ + +#include "lwip/sockets.h" diff --git a/Other/tun2socks/core/c_core.go b/Other/tun2socks/core/c_core.go new file mode 100644 index 0000000..cc21229 --- /dev/null +++ b/Other/tun2socks/core/c_core.go @@ -0,0 +1,22 @@ +package core + +/* +#include "c/core/init.c" +#include "c/core/def.c" +#include "c/core/dns.c" +#include "c/core/inet_chksum.c" +#include "c/core/ip.c" +#include "c/core/mem.c" +#include "c/core/memp.c" +#include "c/core/netif.c" +#include "c/core/pbuf.c" +#include "c/core/raw.c" +#include "c/core/stats.c" +#include "c/core/sys.c" +#include "c/core/tcp.c" +#include "c/core/tcp_in.c" +#include "c/core/tcp_out.c" +#include "c/core/timeouts.c" +#include "c/core/udp.c" +*/ +import "C" diff --git a/Other/tun2socks/core/c_core_4.go b/Other/tun2socks/core/c_core_4.go new file mode 100644 index 0000000..98f4cda --- /dev/null +++ b/Other/tun2socks/core/c_core_4.go @@ -0,0 +1,13 @@ +package core + +/* +#include "c/core/ipv4/autoip.c" +#include "c/core/ipv4/dhcp.c" +#include "c/core/ipv4/etharp.c" +#include "c/core/ipv4/icmp.c" +#include "c/core/ipv4/igmp.c" +#include "c/core/ipv4/ip4_frag.c" +#include "c/core/ipv4/ip4.c" +#include "c/core/ipv4/ip4_addr.c" +*/ +import "C" diff --git a/Other/tun2socks/core/c_core_6.go b/Other/tun2socks/core/c_core_6.go new file mode 100644 index 0000000..c8a6b7f --- /dev/null +++ b/Other/tun2socks/core/c_core_6.go @@ -0,0 +1,14 @@ +package core + +/* +#include "c/core/ipv6/dhcp6.c" +#include "c/core/ipv6/ethip6.c" +#include "c/core/ipv6/icmp6.c" +#include "c/core/ipv6/inet6.c" +#include "c/core/ipv6/ip6.c" +#include "c/core/ipv6/ip6_addr.c" +#include "c/core/ipv6/ip6_frag.c" +#include "c/core/ipv6/mld6.c" +#include "c/core/ipv6/nd6.c" +*/ +import "C" diff --git a/Other/tun2socks/core/c_custom.go b/Other/tun2socks/core/c_custom.go new file mode 100644 index 0000000..f2aa106 --- /dev/null +++ b/Other/tun2socks/core/c_custom.go @@ -0,0 +1,7 @@ +package core + +/* +#cgo CFLAGS: -I./c/custom +#include "c/custom/sys_arch.c" +*/ +import "C" diff --git a/Other/tun2socks/core/conn.go b/Other/tun2socks/core/conn.go new file mode 100644 index 0000000..f25974c --- /dev/null +++ b/Other/tun2socks/core/conn.go @@ -0,0 +1,82 @@ +package core + +import ( + "net" + "time" +) + +// TCPConn abstracts a TCP connection comming from TUN. This connection +// should be handled by a registered TCP proxy handler. It's important +// to note that callback members are called from lwIP, they are already +// in the lwIP thread when they are called, that is, they are holding +// the lwipMutex. +type TCPConn interface { + // Sent will be called when sent data has been acknowledged by peer. + Sent(len uint16) error + + // Receive will be called when data arrives from TUN. + Receive(data []byte) error + + // Err will be called when a fatal error has occurred on the connection. + // The corresponding pcb is already freed when this callback is called + Err(err error) + + // LocalClosed will be called when lwIP receives a FIN segment on a + // connection. + LocalClosed() error + + // Poll will be periodically called by TCP timers. + Poll() error + + // RemoteAddr returns the destination network address. + RemoteAddr() net.Addr + + // LocalAddr returns the local client network address. + LocalAddr() net.Addr + + // Read reads data comming from TUN, note that it reads from an + // underlying pipe that the writer writes in the lwip thread, + // write op blocks until previous written data is consumed, one + // should read out all data as soon as possible. + Read(data []byte) (int, error) + + // Write writes data to TUN. + Write(data []byte) (int, error) + + // Close closes the connection. + Close() error + + // CloseWrite closes the writing side by sending a FIN + // segment to local peer. That means we can write no further + // data to TUN. + CloseWrite() error + + // CloseRead closes the reading side. That means we can no longer + // read more from TUN. + CloseRead() error + + // Abort aborts the connection by sending a RST segment. + Abort() + + SetDeadline(t time.Time) error + SetReadDeadline(t time.Time) error + SetWriteDeadline(t time.Time) error +} + +// TCPConn abstracts a UDP connection comming from TUN. This connection +// should be handled by a registered UDP proxy handler. +type UDPConn interface { + // LocalAddr returns the local client network address. + LocalAddr() *net.UDPAddr + + // ReceiveTo will be called when data arrives from TUN, and the received + // data should be sent to addr. + ReceiveTo(data []byte, addr *net.UDPAddr) error + + // WriteFrom writes data to TUN, addr will be set as source address of + // UDP packets that output to TUN. + WriteFrom(data []byte, addr *net.UDPAddr) (int, error) + + // Close closes the connection. + Close() error +} diff --git a/Other/tun2socks/core/errors.go b/Other/tun2socks/core/errors.go new file mode 100644 index 0000000..cb27d83 --- /dev/null +++ b/Other/tun2socks/core/errors.go @@ -0,0 +1,62 @@ +package core + +import "fmt" + +// Error codes defined in lwIP. +// /** Definitions for error constants. */ +// typedef enum { +// /** No error, everything OK. */ +// ERR_OK = 0, +// /** Out of memory error. */ +// ERR_MEM = -1, +// /** Buffer error. */ +// ERR_BUF = -2, +// /** Timeout. */ +// ERR_TIMEOUT = -3, +// /** Routing problem. */ +// ERR_RTE = -4, +// /** Operation in progress */ +// ERR_INPROGRESS = -5, +// /** Illegal value. */ +// ERR_VAL = -6, +// /** Operation would block. */ +// ERR_WOULDBLOCK = -7, +// /** Address in use. */ +// ERR_USE = -8, +// /** Already connecting. */ +// ERR_ALREADY = -9, +// /** Conn already established.*/ +// ERR_ISCONN = -10, +// /** Not connected. */ +// ERR_CONN = -11, +// /** Low-level netif error */ +// ERR_IF = -12, +// +// /** Connection aborted. */ +// ERR_ABRT = -13, +// /** Connection reset. */ +// ERR_RST = -14, +// /** Connection closed. */ +// ERR_CLSD = -15, +// /** Illegal argument. */ +// ERR_ARG = -16 +// } err_enum_t; + +const ( + LWIP_ERR_OK int = iota + LWIP_ERR_ABRT + LWIP_ERR_CONN + LWIP_ERR_CLSD +) + +type lwipError struct { + Code int +} + +func NewLWIPError(code int) error { + return &lwipError{Code: code} +} + +func (e *lwipError) Error() string { + return fmt.Sprintf("error code %d", e.Code) +} diff --git a/Other/tun2socks/core/handler.go b/Other/tun2socks/core/handler.go new file mode 100644 index 0000000..e23d10a --- /dev/null +++ b/Other/tun2socks/core/handler.go @@ -0,0 +1,31 @@ +package core + +import ( + "net" +) + +// TCPConnHandler handles TCP connections comming from TUN. +type TCPConnHandler interface { + // Handle handles the conn for target. + Handle(conn net.Conn, target *net.TCPAddr) error +} + +// UDPConnHandler handles UDP connections comming from TUN. +type UDPConnHandler interface { + // Connect connects the proxy server. Note that target can be nil. + Connect(conn UDPConn, target *net.UDPAddr) error + + // ReceiveTo will be called when data arrives from TUN. + ReceiveTo(conn UDPConn, data []byte, addr *net.UDPAddr) error +} + +var tcpConnHandler TCPConnHandler +var udpConnHandler UDPConnHandler + +func RegisterTCPConnHandler(h TCPConnHandler) { + tcpConnHandler = h +} + +func RegisterUDPConnHandler(h UDPConnHandler) { + udpConnHandler = h +} diff --git a/Other/tun2socks/core/input.go b/Other/tun2socks/core/input.go new file mode 100644 index 0000000..66a7f68 --- /dev/null +++ b/Other/tun2socks/core/input.go @@ -0,0 +1,127 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/pbuf.h" +#include "lwip/tcp.h" + +err_t +input(struct pbuf *p) +{ + return (*netif_list).input(p, netif_list); +} +*/ +import "C" +import ( + "encoding/binary" + "errors" + "unsafe" +) + +type ipver byte + +const ( + ipv4 = 4 + ipv6 = 6 +) + +type proto byte + +const ( + proto_icmp = 1 + proto_tcp = 6 + proto_udp = 17 +) + +func peekIPVer(p []byte) (ipver, error) { + if len(p) < 1 { + return 0, errors.New("short IP packet") + } + return ipver((p[0] & 0xf0) >> 4), nil +} + +func moreFrags(ipv ipver, p []byte) bool { + switch ipv { + case ipv4: + if (p[6] & 0x20) > 0 /* has MF (More Fragments) bit set */ { + return true + } + case ipv6: + // FIXME Just too lazy to implement this for IPv6, for now + // returning true simply indicate do the copy anyway. + return true + } + return false +} + +func fragOffset(ipv ipver, p []byte) uint16 { + switch ipv { + case ipv4: + return binary.BigEndian.Uint16(p[6:8]) & 0x1fff + case ipv6: + // FIXME Just too lazy to implement this for IPv6, for now + // returning a value greater than 0 simply indicate do the + // copy anyway. + return 1 + } + return 0 +} + +func peekNextProto(ipv ipver, p []byte) (proto, error) { + switch ipv { + case ipv4: + if len(p) < 9 { + return 0, errors.New("short IPv4 packet") + } + return proto(p[9]), nil + case ipv6: + if len(p) < 6 { + return 0, errors.New("short IPv6 packet") + } + return proto(p[6]), nil + default: + return 0, errors.New("unknown IP version") + } +} + +func input(pkt []byte) (int, error) { + if len(pkt) == 0 { + return 0, nil + } + + ipv, err := peekIPVer(pkt) + if err != nil { + return 0, err + } + + nextProto, err := peekNextProto(ipv, pkt) + if err != nil { + return 0, err + } + + lwipMutex.Lock() + defer lwipMutex.Unlock() + + var buf *C.struct_pbuf + + if nextProto == proto_udp && !(moreFrags(ipv, pkt) || fragOffset(ipv, pkt) > 0) { + // Copying data is not necessary for unfragmented UDP packets, and we would like to + // have all data in one pbuf. + buf = C.pbuf_alloc_reference(unsafe.Pointer(&pkt[0]), C.u16_t(len(pkt)), C.PBUF_REF) + } else { + // TODO Copy the data only when lwip need to keep it, e.g. in + // case we are returning ERR_CONN in tcpRecvFn. + // + // Allocating from PBUF_POOL results in a pbuf chain that may + // contain multiple pbufs. + buf = C.pbuf_alloc(C.PBUF_RAW, C.u16_t(len(pkt)), C.PBUF_POOL) + C.pbuf_take(buf, unsafe.Pointer(&pkt[0]), C.u16_t(len(pkt))) + } + + ierr := C.input(buf) + if ierr != C.ERR_OK { + C.pbuf_free(buf) + return 0, errors.New("packet not handled") + } + return len(pkt), nil +} diff --git a/Other/tun2socks/core/lwip.go b/Other/tun2socks/core/lwip.go new file mode 100644 index 0000000..9ba76e4 --- /dev/null +++ b/Other/tun2socks/core/lwip.go @@ -0,0 +1,170 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/tcp.h" +#include "lwip/udp.h" +#include "lwip/timeouts.h" +*/ +import "C" +import ( + "context" + "errors" + "sync" + "time" + "unsafe" +) + +const CHECK_TIMEOUTS_INTERVAL = 250 // in millisecond +const TCP_POLL_INTERVAL = 8 // poll every 4 seconds + +type LWIPStack interface { + Write([]byte) (int, error) + Close() error + RestartTimeouts() +} + +// lwIP runs in a single thread, locking is needed in Go runtime. +var lwipMutex = &sync.Mutex{} + +type lwipStack struct { + tpcb *C.struct_tcp_pcb + upcb *C.struct_udp_pcb + + ctx context.Context + cancel context.CancelFunc +} + +// NewLWIPStack listens for any incoming connections/packets and registers +// corresponding accept/recv callback functions. +func NewLWIPStack() LWIPStack { + tcpPCB := C.tcp_new() + if tcpPCB == nil { + panic("tcp_new return nil") + } + + err := C.tcp_bind(tcpPCB, C.IP_ADDR_ANY, 0) + switch err { + case C.ERR_OK: + break + case C.ERR_VAL: + panic("invalid PCB state") + case C.ERR_USE: + panic("port in use") + default: + C.memp_free(C.MEMP_TCP_PCB, unsafe.Pointer(tcpPCB)) + panic("unknown tcp_bind return value") + } + + tcpPCB = C.tcp_listen_with_backlog(tcpPCB, C.TCP_DEFAULT_LISTEN_BACKLOG) + if tcpPCB == nil { + panic("can not allocate tcp pcb") + } + + setTCPAcceptCallback(tcpPCB) + + udpPCB := C.udp_new() + if udpPCB == nil { + panic("could not allocate udp pcb") + } + + err = C.udp_bind(udpPCB, C.IP_ADDR_ANY, 0) + if err != C.ERR_OK { + panic("address already in use") + } + + setUDPRecvCallback(udpPCB, nil) + + ctx, cancel := context.WithCancel(context.Background()) + + go func() { + for { + select { + case <-time.After(CHECK_TIMEOUTS_INTERVAL * time.Millisecond): + lwipMutex.Lock() + C.sys_check_timeouts() + lwipMutex.Unlock() + case <-ctx.Done(): + return + } + } + }() + + return &lwipStack{ + tpcb: tcpPCB, + upcb: udpPCB, + ctx: ctx, + cancel: cancel, + } +} + +// Write writes IP packets to the stack. +func (s *lwipStack) Write(data []byte) (int, error) { + select { + case <-s.ctx.Done(): + return 0, errors.New("stack closed") + default: + return input(data) + } +} + +// RestartTimeouts rebases the timeout times to the current time. +// +// This is necessary if sys_check_timeouts() hasn't been called for a long +// time (e.g. while saving energy) to prevent all timer functions of that +// period being called. +func (s *lwipStack) RestartTimeouts() { + lwipMutex.Lock() + C.sys_restart_timeouts() + lwipMutex.Unlock() +} + +// Close closes the stack. +// +// Timer events will be canceled and existing connections will be closed. +// Note this function will not free objects allocated in lwIP initialization +// stage, e.g. the loop interface. +func (s *lwipStack) Close() error { + // Stop firing timer events. + s.cancel() + + // Abort and close all TCP and UDP connections. + tcpConns.Range(func(_, c interface{}) bool { + c.(*tcpConn).Abort() + return true + }) + udpConns.Range(func(_, c interface{}) bool { + // This only closes UDP connections in the core, + // UDP connections in the handler will wait till + // timeout, they are not closed immediately for + // now. + c.(*udpConn).Close() + return true + }) + + // Remove callbacks and close listening pcbs. + lwipMutex.Lock() + C.tcp_accept(s.tpcb, nil) + C.udp_recv(s.upcb, nil, nil) + C.tcp_close(s.tpcb) // FIXME handle error + C.udp_remove(s.upcb) + lwipMutex.Unlock() + + return nil +} + +func init() { + // Initialize lwIP. + // + // There is a little trick here, a loop interface (127.0.0.1) + // is created in the initialization stage due to the option + // `#define LWIP_HAVE_LOOPIF 1` in `lwipopts.h`, so we need + // not create our own interface. + // + // Now the loop interface is just the first element in + // `C.netif_list`, i.e. `*C.netif_list`. + lwipInit() + + // Set MTU. + C.netif_list.mtu = 1500 +} diff --git a/Other/tun2socks/core/lwip_other.go b/Other/tun2socks/core/lwip_other.go new file mode 100644 index 0000000..d57be78 --- /dev/null +++ b/Other/tun2socks/core/lwip_other.go @@ -0,0 +1,13 @@ +// +build linux darwin + +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/init.h" +*/ +import "C" + +func lwipInit() { + C.lwip_init() // Initialze modules. +} diff --git a/Other/tun2socks/core/lwip_windows.go b/Other/tun2socks/core/lwip_windows.go new file mode 100644 index 0000000..3844e89 --- /dev/null +++ b/Other/tun2socks/core/lwip_windows.go @@ -0,0 +1,15 @@ +// +build windows + +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/sys.h" +#include "lwip/init.h" +*/ +import "C" + +func lwipInit() { + C.sys_init() // Initialze sys_arch layer, must be called before anything else. + C.lwip_init() // Initialze modules. +} diff --git a/Other/tun2socks/core/output.go b/Other/tun2socks/core/output.go new file mode 100644 index 0000000..3c878e8 --- /dev/null +++ b/Other/tun2socks/core/output.go @@ -0,0 +1,46 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/tcp.h" + +extern err_t output(struct pbuf *p); + +err_t +output_ip4(struct netif *netif, struct pbuf *p, const ip4_addr_t *ipaddr) +{ + return output(p); +} + +err_t +output_ip6(struct netif *netif, struct pbuf *p, const ip6_addr_t *ipaddr) +{ + return output(p); +} + +void +set_output() +{ + if (netif_list != NULL) { + (*netif_list).output = output_ip4; + (*netif_list).output_ip6 = output_ip6; + } +} +*/ +import "C" +import ( + "errors" +) + +var OutputFn func([]byte) (int, error) + +func RegisterOutputFn(fn func([]byte) (int, error)) { + OutputFn = fn + C.set_output() +} + +func init() { + OutputFn = func(data []byte) (int, error) { + return 0, errors.New("output function not set") + } +} diff --git a/Other/tun2socks/core/output_export.go b/Other/tun2socks/core/output_export.go new file mode 100644 index 0000000..79ae18a --- /dev/null +++ b/Other/tun2socks/core/output_export.go @@ -0,0 +1,28 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/tcp.h" +*/ +import "C" +import ( + "unsafe" +) + +//export output +func output(p *C.struct_pbuf) C.err_t { + // In most case, all data are in the same pbuf struct, data copying can be avoid by + // backing Go slice with C array. Buf if there are multiple pbuf structs holding the + // data, we must copy data for sending them in one pass. + totlen := int(p.tot_len) + if p.tot_len == p.len { + buf := (*[1 << 30]byte)(unsafe.Pointer(p.payload))[:totlen:totlen] + OutputFn(buf[:totlen]) + } else { + buf := NewBytes(totlen) + C.pbuf_copy_partial(p, unsafe.Pointer(&buf[0]), p.tot_len, 0) // data copy here! + OutputFn(buf[:totlen]) + FreeBytes(buf) + } + return C.ERR_OK +} diff --git a/Other/tun2socks/core/tcp_callback.go b/Other/tun2socks/core/tcp_callback.go new file mode 100644 index 0000000..ba385b1 --- /dev/null +++ b/Other/tun2socks/core/tcp_callback.go @@ -0,0 +1,62 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/tcp.h" + +extern err_t tcpAcceptFn(void *arg, struct tcp_pcb *newpcb, err_t err); + +void +set_tcp_accept_callback(struct tcp_pcb *pcb) { + tcp_accept(pcb, tcpAcceptFn); +} + +extern err_t tcpRecvFn(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err); + +void +set_tcp_recv_callback(struct tcp_pcb *pcb) { + tcp_recv(pcb, tcpRecvFn); +} + +extern err_t tcpSentFn(void *arg, struct tcp_pcb *tpcb, u16_t len); + +void +set_tcp_sent_callback(struct tcp_pcb *pcb) { + tcp_sent(pcb, tcpSentFn); +} + +extern void tcpErrFn(void *arg, err_t err); + +void +set_tcp_err_callback(struct tcp_pcb *pcb) { + tcp_err(pcb, tcpErrFn); +} + +extern err_t tcpPollFn(void *arg, struct tcp_pcb *tpcb); + +void +set_tcp_poll_callback(struct tcp_pcb *pcb, u8_t interval) { + tcp_poll(pcb, tcpPollFn, interval); +} +*/ +import "C" + +func setTCPAcceptCallback(pcb *C.struct_tcp_pcb) { + C.set_tcp_accept_callback(pcb) +} + +func setTCPRecvCallback(pcb *C.struct_tcp_pcb) { + C.set_tcp_recv_callback(pcb) +} + +func setTCPSentCallback(pcb *C.struct_tcp_pcb) { + C.set_tcp_sent_callback(pcb) +} + +func setTCPErrCallback(pcb *C.struct_tcp_pcb) { + C.set_tcp_err_callback(pcb) +} + +func setTCPPollCallback(pcb *C.struct_tcp_pcb, interval C.u8_t) { + C.set_tcp_poll_callback(pcb, interval) +} diff --git a/Other/tun2socks/core/tcp_callback_export.go b/Other/tun2socks/core/tcp_callback_export.go new file mode 100644 index 0000000..e936fe8 --- /dev/null +++ b/Other/tun2socks/core/tcp_callback_export.go @@ -0,0 +1,165 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/tcp.h" +*/ +import "C" +import ( + "errors" + "fmt" + "unsafe" +) + +// These exported callback functions must be placed in a seperated file. +// +// See also: +// https://github.com/golang/go/issues/20639 +// https://golang.org/cmd/cgo/#hdr-C_references_to_Go + +//export tcpAcceptFn +func tcpAcceptFn(arg unsafe.Pointer, newpcb *C.struct_tcp_pcb, err C.err_t) C.err_t { + if err != C.ERR_OK { + return err + } + + if tcpConnHandler == nil { + panic("must register a TCP connection handler") + } + + if _, nerr := newTCPConn(newpcb, tcpConnHandler); nerr != nil { + switch nerr.(*lwipError).Code { + case LWIP_ERR_ABRT: + return C.ERR_ABRT + case LWIP_ERR_OK: + return C.ERR_OK + default: + return C.ERR_CONN + } + } + + return C.ERR_OK +} + +//export tcpRecvFn +func tcpRecvFn(arg unsafe.Pointer, tpcb *C.struct_tcp_pcb, p *C.struct_pbuf, err C.err_t) C.err_t { + if err != C.ERR_OK && err != C.ERR_ABRT { + return err + } + + // Only free the pbuf when returning ERR_OK or ERR_ABRT, + // otherwise must not free the pbuf. + shouldFreePbuf := true + defer func() { + if p != nil && shouldFreePbuf { + C.pbuf_free(p) + } + }() + + conn, ok := tcpConns.Load(getConnKeyVal(arg)) + if !ok { + // The connection does not exists. + C.tcp_abort(tpcb) + return C.ERR_ABRT + } + + if p == nil { + // Peer closed, EOF. + err := conn.(TCPConn).LocalClosed() + switch err.(*lwipError).Code { + case LWIP_ERR_ABRT: + return C.ERR_ABRT + case LWIP_ERR_OK: + return C.ERR_OK + default: + panic("unexpected error") + } + } + + var buf []byte + var totlen = int(p.tot_len) + if p.tot_len == p.len { + buf = (*[1 << 30]byte)(unsafe.Pointer(p.payload))[:totlen:totlen] + } else { + buf = NewBytes(totlen) + defer FreeBytes(buf) + C.pbuf_copy_partial(p, unsafe.Pointer(&buf[0]), p.tot_len, 0) + } + + rerr := conn.(TCPConn).Receive(buf[:totlen]) + if rerr != nil { + switch rerr.(*lwipError).Code { + case LWIP_ERR_ABRT: + return C.ERR_ABRT + case LWIP_ERR_OK: + return C.ERR_OK + case LWIP_ERR_CONN: + shouldFreePbuf = false + // Tell lwip we can't receive data at the moment, + // lwip will store it and try again later. + return C.ERR_CONN + case LWIP_ERR_CLSD: + // lwip won't handle ERR_CLSD error for us, manually + // shuts down the rx side. + C.tcp_recved(tpcb, p.tot_len) + C.tcp_shutdown(tpcb, 1, 0) + return C.ERR_OK + default: + panic("unexpected error") + } + } + + return C.ERR_OK +} + +//export tcpSentFn +func tcpSentFn(arg unsafe.Pointer, tpcb *C.struct_tcp_pcb, len C.u16_t) C.err_t { + if conn, ok := tcpConns.Load(getConnKeyVal(arg)); ok { + err := conn.(TCPConn).Sent(uint16(len)) + switch err.(*lwipError).Code { + case LWIP_ERR_ABRT: + return C.ERR_ABRT + case LWIP_ERR_OK: + return C.ERR_OK + default: + panic("unexpected error") + } + } else { + C.tcp_abort(tpcb) + return C.ERR_ABRT + } +} + +//export tcpErrFn +func tcpErrFn(arg unsafe.Pointer, err C.err_t) { + if conn, ok := tcpConns.Load(getConnKeyVal(arg)); ok { + switch err { + case C.ERR_ABRT: + // Aborted through tcp_abort or by a TCP timer + conn.(TCPConn).Err(errors.New("connection aborted")) + case C.ERR_RST: + // The connection was reset by the remote host + conn.(TCPConn).Err(errors.New("connection reseted")) + default: + conn.(TCPConn).Err(errors.New(fmt.Sprintf("lwip error code %v", int(err)))) + } + } +} + +//export tcpPollFn +func tcpPollFn(arg unsafe.Pointer, tpcb *C.struct_tcp_pcb) C.err_t { + if conn, ok := tcpConns.Load(getConnKeyVal(arg)); ok { + err := conn.(TCPConn).Poll() + switch err.(*lwipError).Code { + case LWIP_ERR_ABRT: + return C.ERR_ABRT + case LWIP_ERR_OK: + return C.ERR_OK + default: + panic("unexpected error") + } + } else { + C.tcp_abort(tpcb) + return C.ERR_ABRT + } +} diff --git a/Other/tun2socks/core/tcp_conn.go b/Other/tun2socks/core/tcp_conn.go new file mode 100644 index 0000000..539f854 --- /dev/null +++ b/Other/tun2socks/core/tcp_conn.go @@ -0,0 +1,474 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/tcp.h" +*/ +import "C" +import ( + "errors" + "fmt" + "io" + "math/rand" + "net" + "sync" + "time" + "unsafe" +) + +type tcpConnState uint + +const ( + // tcpNewConn is the initial state. + tcpNewConn tcpConnState = iota + + // tcpConnecting indicates the handler is still connecting remote host. + tcpConnecting + + // tcpConnected indicates the connection has been established, handler + // may write data to TUN, and read data from TUN. + tcpConnected + + // tcpWriteClosed indicates the handler has closed the writing side + // of the connection, no more data will send to TUN, but handler can still + // read data from TUN. + tcpWriteClosed + + // tcpReceiveClosed indicates lwIP has received a FIN segment from + // local peer, the reading side is closed, no more data can be read + // from TUN, but handler can still write data to TUN. + tcpReceiveClosed + + // tcpClosing indicates both reading side and writing side are closed, + // resources deallocation will be triggered at any time in lwIP callbacks. + tcpClosing + + // tcpAborting indicates the connection is aborting, resources deallocation + // will be triggered at any time in lwIP callbacks. + tcpAborting + + // tcpClosed indicates the connection has been closed, resources were freed. + tcpClosed + + // tcpErrord indicates an fatal error occured on the connection, resources + // were freed. + tcpErrored +) + +type tcpConn struct { + sync.Mutex + + pcb *C.struct_tcp_pcb + handler TCPConnHandler + remoteAddr *net.TCPAddr + localAddr *net.TCPAddr + connKeyArg unsafe.Pointer + connKey uint32 + canWrite *sync.Cond // Condition variable to implement TCP backpressure. + state tcpConnState + sndPipeReader *io.PipeReader + sndPipeWriter *io.PipeWriter + closeOnce sync.Once + closeErr error +} + +func newTCPConn(pcb *C.struct_tcp_pcb, handler TCPConnHandler) (TCPConn, error) { + connKeyArg := newConnKeyArg() + connKey := rand.Uint32() + setConnKeyVal(unsafe.Pointer(connKeyArg), connKey) + + // Pass the key as arg for subsequent tcp callbacks. + C.tcp_arg(pcb, unsafe.Pointer(connKeyArg)) + + // Register callbacks. + setTCPRecvCallback(pcb) + setTCPSentCallback(pcb) + setTCPErrCallback(pcb) + setTCPPollCallback(pcb, C.u8_t(TCP_POLL_INTERVAL)) + + pipeReader, pipeWriter := io.Pipe() + conn := &tcpConn{ + pcb: pcb, + handler: handler, + localAddr: ParseTCPAddr(ipAddrNTOA(pcb.remote_ip), uint16(pcb.remote_port)), + remoteAddr: ParseTCPAddr(ipAddrNTOA(pcb.local_ip), uint16(pcb.local_port)), + connKeyArg: connKeyArg, + connKey: connKey, + canWrite: sync.NewCond(&sync.Mutex{}), + state: tcpNewConn, + sndPipeReader: pipeReader, + sndPipeWriter: pipeWriter, + } + + // Associate conn with key and save to the global map. + tcpConns.Store(connKey, conn) + + // Connecting remote host could take some time, do it in another goroutine + // to prevent blocking the lwip thread. + conn.Lock() + conn.state = tcpConnecting + conn.Unlock() + go func() { + err := handler.Handle(TCPConn(conn), conn.remoteAddr) + if err != nil { + conn.Abort() + } else { + conn.Lock() + if conn.state != tcpConnecting { + conn.Unlock() + return + } + conn.state = tcpConnected + conn.Unlock() + + lwipMutex.Lock() + if pcb.refused_data != nil { + C.tcp_process_refused_data(pcb) + } + lwipMutex.Unlock() + } + }() + + return conn, NewLWIPError(LWIP_ERR_OK) +} + +func (conn *tcpConn) RemoteAddr() net.Addr { + return conn.remoteAddr +} + +func (conn *tcpConn) LocalAddr() net.Addr { + return conn.localAddr +} + +func (conn *tcpConn) SetDeadline(t time.Time) error { + return nil +} +func (conn *tcpConn) SetReadDeadline(t time.Time) error { + return nil +} +func (conn *tcpConn) SetWriteDeadline(t time.Time) error { + return nil +} + +func (conn *tcpConn) receiveCheck() error { + conn.Lock() + defer conn.Unlock() + + switch conn.state { + case tcpConnected: + fallthrough + case tcpWriteClosed: + return nil + case tcpNewConn: + fallthrough + case tcpConnecting: + return NewLWIPError(LWIP_ERR_CONN) + case tcpAborting: + fallthrough + case tcpClosed: + fallthrough + case tcpReceiveClosed: + fallthrough + case tcpClosing: + return NewLWIPError(LWIP_ERR_CLSD) + case tcpErrored: + conn.abortInternal() + return NewLWIPError(LWIP_ERR_ABRT) + default: + panic("unexpected error") + } + return nil +} + +func (conn *tcpConn) Receive(data []byte) error { + if err := conn.receiveCheck(); err != nil { + return err + } + n, err := conn.sndPipeWriter.Write(data) + if err != nil { + return NewLWIPError(LWIP_ERR_CLSD) + } + C.tcp_recved(conn.pcb, C.u16_t(n)) + return NewLWIPError(LWIP_ERR_OK) +} + +func (conn *tcpConn) Read(data []byte) (int, error) { + conn.Lock() + if conn.state == tcpReceiveClosed { + conn.Unlock() + return 0, io.EOF + } + if conn.state >= tcpClosing { + conn.Unlock() + return 0, io.ErrClosedPipe + } + conn.Unlock() + + // Handler should get EOF. + n, err := conn.sndPipeReader.Read(data) + if err == io.ErrClosedPipe { + err = io.EOF + } + return n, err +} + +// writeInternal enqueues data to snd_buf, and treats ERR_MEM returned by tcp_write not an error, +// but instead tells the caller that data is not successfully enqueued, and should try +// again another time. By calling this function, the lwIP thread is assumed to be already +// locked by the caller. +func (conn *tcpConn) writeInternal(data []byte) (int, error) { + err := C.tcp_write(conn.pcb, unsafe.Pointer(&data[0]), C.u16_t(len(data)), C.TCP_WRITE_FLAG_COPY) + if err == C.ERR_OK { + C.tcp_output(conn.pcb) + return len(data), nil + } else if err == C.ERR_MEM { + return 0, nil + } + return 0, fmt.Errorf("tcp_write failed (%v)", int(err)) +} + +func (conn *tcpConn) writeCheck() error { + conn.Lock() + defer conn.Unlock() + + switch conn.state { + case tcpConnecting: + fallthrough + case tcpConnected: + fallthrough + case tcpReceiveClosed: + return nil + case tcpWriteClosed: + fallthrough + case tcpClosing: + fallthrough + case tcpClosed: + fallthrough + case tcpErrored: + fallthrough + case tcpAborting: + return io.ErrClosedPipe + default: + panic("unexpected error") + } + return nil +} + +func (conn *tcpConn) Write(data []byte) (int, error) { + totalWritten := 0 + + conn.canWrite.L.Lock() + defer conn.canWrite.L.Unlock() + + for len(data) > 0 { + if err := conn.writeCheck(); err != nil { + return totalWritten, err + } + + lwipMutex.Lock() + toWrite := len(data) + if toWrite > int(conn.pcb.snd_buf) { + // Write at most the size of the LWIP buffer. + toWrite = int(conn.pcb.snd_buf) + } + if toWrite > 0 { + written, err := conn.writeInternal(data[0:toWrite]) + totalWritten += written + if err != nil { + lwipMutex.Unlock() + return totalWritten, err + } + data = data[written:len(data)] + } + lwipMutex.Unlock() + if len(data) == 0 { + break // Don't block if all the data has been written. + } + conn.canWrite.Wait() + } + + return totalWritten, nil +} + +func (conn *tcpConn) CloseWrite() error { + conn.Lock() + if conn.state >= tcpClosing || conn.state == tcpWriteClosed { + conn.Unlock() + return nil + } + if conn.state == tcpReceiveClosed { + conn.state = tcpClosing + } else { + conn.state = tcpWriteClosed + } + conn.Unlock() + + lwipMutex.Lock() + // FIXME Handle tcp_shutdown error. + C.tcp_shutdown(conn.pcb, 0, 1) + lwipMutex.Unlock() + + return nil +} + +func (conn *tcpConn) CloseRead() error { + return conn.sndPipeReader.Close() +} + +func (conn *tcpConn) Sent(len uint16) error { + // Some packets are acknowledged by local client, check if any pending data to send. + return conn.checkState() +} + +func (conn *tcpConn) checkClosing() error { + conn.Lock() + defer conn.Unlock() + + if conn.state == tcpClosing { + conn.closeInternal() + return NewLWIPError(LWIP_ERR_OK) + } + return nil +} + +func (conn *tcpConn) checkAborting() error { + conn.Lock() + defer conn.Unlock() + + if conn.state == tcpAborting { + conn.abortInternal() + return NewLWIPError(LWIP_ERR_ABRT) + } + return nil +} + +func (conn *tcpConn) isClosed() bool { + conn.Lock() + defer conn.Unlock() + + return conn.state == tcpClosed +} + +func (conn *tcpConn) checkState() error { + if conn.isClosed() { + return nil + } + + err := conn.checkClosing() + if err != nil { + return err + } + + err = conn.checkAborting() + if err != nil { + return err + } + + // Signal the writer to try writting. + conn.canWrite.Broadcast() + + return NewLWIPError(LWIP_ERR_OK) +} + +func (conn *tcpConn) Close() error { + conn.closeOnce.Do(conn.close) + return conn.closeErr +} + +func (conn *tcpConn) close() { + err := conn.CloseRead() + if err != nil { + conn.closeErr = err + } + err = conn.CloseWrite() + if err != nil { + conn.closeErr = err + } +} + +func (conn *tcpConn) setLocalClosed() error { + conn.Lock() + defer conn.Unlock() + + if conn.state >= tcpClosing || conn.state == tcpReceiveClosed { + return nil + } + + // Causes the read half of the pipe returns. + conn.sndPipeWriter.Close() + + if conn.state == tcpWriteClosed { + conn.state = tcpClosing + } else { + conn.state = tcpReceiveClosed + } + conn.canWrite.Broadcast() + return nil +} + +// Never call this function outside of the lwIP thread. +func (conn *tcpConn) closeInternal() error { + C.tcp_arg(conn.pcb, nil) + C.tcp_recv(conn.pcb, nil) + C.tcp_sent(conn.pcb, nil) + C.tcp_err(conn.pcb, nil) + C.tcp_poll(conn.pcb, nil, 0) + + conn.release() + + // FIXME Handle error. + err := C.tcp_close(conn.pcb) + if err == C.ERR_OK { + return nil + } else { + return errors.New(fmt.Sprintf("close TCP connection failed, lwip error code %d", int(err))) + } +} + +// Never call this function outside of the lwIP thread since it calls +// tcp_abort() and in that case we must return ERR_ABRT to lwIP. +func (conn *tcpConn) abortInternal() { + conn.release() + C.tcp_abort(conn.pcb) +} + +func (conn *tcpConn) Abort() { + conn.Lock() + // If it's in tcpErrored state, the pcb was already freed. + if conn.state < tcpAborting { + conn.state = tcpAborting + } + conn.Unlock() + + lwipMutex.Lock() + conn.checkState() + lwipMutex.Unlock() +} + +func (conn *tcpConn) Err(err error) { + conn.Lock() + defer conn.Unlock() + + conn.release() + conn.state = tcpErrored + conn.canWrite.Broadcast() +} + +func (conn *tcpConn) LocalClosed() error { + conn.setLocalClosed() + return conn.checkState() +} + +func (conn *tcpConn) release() { + if _, found := tcpConns.Load(conn.connKey); found { + freeConnKeyArg(conn.connKeyArg) + tcpConns.Delete(conn.connKey) + } + conn.sndPipeWriter.Close() + conn.sndPipeReader.Close() + conn.state = tcpClosed +} + +func (conn *tcpConn) Poll() error { + return conn.checkState() +} diff --git a/Other/tun2socks/core/tcp_conn_map.go b/Other/tun2socks/core/tcp_conn_map.go new file mode 100644 index 0000000..881708e --- /dev/null +++ b/Other/tun2socks/core/tcp_conn_map.go @@ -0,0 +1,65 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/tcp.h" +#include + +void* +new_conn_key_arg() +{ + return malloc(sizeof(uint32_t)); +} + +void +free_conn_key_arg(void *arg) +{ + free(arg); +} + +void +set_conn_key_val(void *arg, uint32_t val) +{ + *((uint32_t*)arg) = val; +} + +uint32_t +get_conn_key_val(void *arg) +{ + return *((uint32_t*)arg); +} +*/ +import "C" +import ( + "sync" + "unsafe" +) + +var tcpConns sync.Map + +// We need such a key-value mechanism because when passing a Go pointer +// to C, the Go pointer will only be valid during the call. +// If we pass a Go pointer to tcp_arg(), this pointer will not be usable +// in subsequent callbacks (e.g.: tcp_recv(), tcp_err()). +// +// Instead we need to pass a C pointer to tcp_arg(), we manually allocate +// the memory in C and return its pointer to Go code. After the connection +// end, the memory should be freed manually. +// +// See also: +// https://github.com/golang/go/issues/12416 +func newConnKeyArg() unsafe.Pointer { + return C.new_conn_key_arg() +} + +func freeConnKeyArg(p unsafe.Pointer) { + C.free_conn_key_arg(p) +} + +func setConnKeyVal(p unsafe.Pointer, val uint32) { + C.set_conn_key_val(p, C.uint32_t(val)) +} + +func getConnKeyVal(p unsafe.Pointer) uint32 { + return uint32(C.get_conn_key_val(p)) +} diff --git a/Other/tun2socks/core/udp_callback.go b/Other/tun2socks/core/udp_callback.go new file mode 100644 index 0000000..4d0151e --- /dev/null +++ b/Other/tun2socks/core/udp_callback.go @@ -0,0 +1,21 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/udp.h" + +extern void udpRecvFn(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port, const ip_addr_t *dest_addr, u16_t dest_port); + +void +set_udp_recv_callback(struct udp_pcb *pcb, void *recv_arg) { + udp_recv(pcb, udpRecvFn, recv_arg); +} +*/ +import "C" +import ( + "unsafe" +) + +func setUDPRecvCallback(pcb *C.struct_udp_pcb, recvArg unsafe.Pointer) { + C.set_udp_recv_callback(pcb, recvArg) +} diff --git a/Other/tun2socks/core/udp_callback_export.go b/Other/tun2socks/core/udp_callback_export.go new file mode 100644 index 0000000..db885a7 --- /dev/null +++ b/Other/tun2socks/core/udp_callback_export.go @@ -0,0 +1,62 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/udp.h" +*/ +import "C" +import ( + "unsafe" +) + +//export udpRecvFn +func udpRecvFn(arg unsafe.Pointer, pcb *C.struct_udp_pcb, p *C.struct_pbuf, addr *C.ip_addr_t, port C.u16_t, destAddr *C.ip_addr_t, destPort C.u16_t) { + defer func() { + if p != nil { + C.pbuf_free(p) + } + }() + + if pcb == nil { + return + } + + srcAddr := ParseUDPAddr(ipAddrNTOA(*addr), uint16(port)) + dstAddr := ParseUDPAddr(ipAddrNTOA(*destAddr), uint16(destPort)) + if srcAddr == nil || dstAddr == nil { + panic("invalid UDP address") + } + + connId := udpConnId{ + src: srcAddr.String(), + } + conn, found := udpConns.Load(connId) + if !found { + if udpConnHandler == nil { + panic("must register a UDP connection handler") + } + var err error + conn, err = newUDPConn(pcb, + udpConnHandler, + *addr, + port, + srcAddr, + dstAddr) + if err != nil { + return + } + udpConns.Store(connId, conn) + } + + var buf []byte + var totlen = int(p.tot_len) + if p.tot_len == p.len { + buf = (*[1 << 30]byte)(unsafe.Pointer(p.payload))[:totlen:totlen] + } else { + buf = NewBytes(totlen) + defer FreeBytes(buf) + C.pbuf_copy_partial(p, unsafe.Pointer(&buf[0]), p.tot_len, 0) + } + + conn.(UDPConn).ReceiveTo(buf[:totlen], dstAddr) +} diff --git a/Other/tun2socks/core/udp_conn.go b/Other/tun2socks/core/udp_conn.go new file mode 100644 index 0000000..195d506 --- /dev/null +++ b/Other/tun2socks/core/udp_conn.go @@ -0,0 +1,158 @@ +package core + +/* +#cgo CFLAGS: -I./c/include +#include "lwip/udp.h" +*/ +import "C" +import ( + "errors" + "fmt" + "net" + "sync" + "unsafe" +) + +type udpConnState uint + +const ( + udpConnecting udpConnState = iota + udpConnected + udpClosed +) + +type udpPacket struct { + data []byte + addr *net.UDPAddr +} + +type udpConn struct { + sync.Mutex + + pcb *C.struct_udp_pcb + handler UDPConnHandler + localAddr *net.UDPAddr + localIP C.ip_addr_t + localPort C.u16_t + state udpConnState + pending chan *udpPacket +} + +func newUDPConn(pcb *C.struct_udp_pcb, handler UDPConnHandler, localIP C.ip_addr_t, localPort C.u16_t, localAddr, remoteAddr *net.UDPAddr) (UDPConn, error) { + conn := &udpConn{ + handler: handler, + pcb: pcb, + localAddr: localAddr, + localIP: localIP, + localPort: localPort, + state: udpConnecting, + pending: make(chan *udpPacket, 64), // To hold the early packets on the connection + } + + go func() { + err := handler.Connect(conn, remoteAddr) + if err != nil { + conn.Close() + } else { + conn.Lock() + conn.state = udpConnected + conn.Unlock() + // Once connected, send all pending data. + DrainPending: + for { + select { + case pkt := <-conn.pending: + err := conn.handler.ReceiveTo(conn, pkt.data, pkt.addr) + if err != nil { + break DrainPending + } + continue DrainPending + default: + conn.pending = nil + break DrainPending + } + } + } + }() + + return conn, nil +} + +func (conn *udpConn) LocalAddr() *net.UDPAddr { + return conn.localAddr +} + +func (conn *udpConn) checkState() error { + conn.Lock() + defer conn.Unlock() + + switch conn.state { + case udpClosed: + return errors.New("connection closed") + case udpConnected: + return nil + case udpConnecting: + return errors.New("not connected") + } + return nil +} + +// If the connection isn't ready yet, and there is room in the queue, make a copy +// and hold onto it until the connection is ready. +func (conn *udpConn) enqueueEarlyPacket(data []byte, addr *net.UDPAddr) bool { + conn.Lock() + defer conn.Unlock() + if conn.state == udpConnecting { + pkt := &udpPacket{data: append([]byte(nil), data...), addr: addr} + select { + // Data will be dropped if pending is full. + case conn.pending <- pkt: + return true + default: + } + } + return false +} + +func (conn *udpConn) ReceiveTo(data []byte, addr *net.UDPAddr) error { + if conn.enqueueEarlyPacket(data, addr) { + return nil + } + if err := conn.checkState(); err != nil { + return err + } + err := conn.handler.ReceiveTo(conn, data, addr) + if err != nil { + return errors.New(fmt.Sprintf("write proxy failed: %v", err)) + } + return nil +} + +func (conn *udpConn) WriteFrom(data []byte, addr *net.UDPAddr) (int, error) { + if len(data) == 0 { + return 0, nil + } + if err := conn.checkState(); err != nil { + return 0, err + } + // FIXME any memory leaks? + cremoteIP := C.struct_ip_addr{} + if err := ipAddrATON(addr.IP.String(), &cremoteIP); err != nil { + return 0, err + } + buf := C.pbuf_alloc_reference(unsafe.Pointer(&data[0]), C.u16_t(len(data)), C.PBUF_ROM) + defer C.pbuf_free(buf) + C.udp_sendto(conn.pcb, buf, &conn.localIP, conn.localPort, &cremoteIP, C.u16_t(addr.Port)) + return len(data), nil +} + +func (conn *udpConn) Close() error { + connId := udpConnId{ + src: conn.LocalAddr().String(), + } + conn.Lock() + conn.state = udpClosed + conn.Unlock() + udpConns.Delete(connId) + return nil +} diff --git a/Other/tun2socks/core/udp_conn_map.go b/Other/tun2socks/core/udp_conn_map.go new file mode 100644 index 0000000..bd1b558 --- /dev/null +++ b/Other/tun2socks/core/udp_conn_map.go @@ -0,0 +1,11 @@ +package core + +import ( + "sync" +) + +var udpConns sync.Map + +type udpConnId struct { + src string +} diff --git a/Other/tun2socks/go.mod b/Other/tun2socks/go.mod new file mode 100644 index 0000000..6739c10 --- /dev/null +++ b/Other/tun2socks/go.mod @@ -0,0 +1,13 @@ +module rixcloud.moe/aiocloud/tun2socks + +go 1.17 + +require ( + github.com/miekg/dns v1.1.43 + github.com/shadowsocks/go-shadowsocks2 v0.1.5 + github.com/yl2chen/cidranger v1.0.2 + golang.org/x/sys v0.0.0-20210917161153-d61c044b1678 + golang.zx2c4.com/wireguard v0.0.0-20210905140043-2ef39d47540c +) + +require golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect diff --git a/Other/tun2socks/go.sum b/Other/tun2socks/go.sum new file mode 100644 index 0000000..7b7ea38 --- /dev/null +++ b/Other/tun2socks/go.sum @@ -0,0 +1,38 @@ +github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/miekg/dns v1.1.43 h1:JKfpVSCB84vrAmHzyrsxB5NAr5kLoMXZArPSw7Qlgyg= +github.com/miekg/dns v1.1.43/go.mod h1:+evo5L0630/F6ca/Z9+GAqzhjGyn8/c+TBaOyfEl0V4= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3/go.mod h1:HgjTstvQsPGkxUsCd2KWxErBblirPizecHcpD3ffK+s= +github.com/shadowsocks/go-shadowsocks2 v0.1.5 h1:PDSQv9y2S85Fl7VBeOMF9StzeXZyK1HakRm86CUbr28= +github.com/shadowsocks/go-shadowsocks2 v0.1.5/go.mod h1:AGGpIoek4HRno4xzyFiAtLHkOpcoznZEkAccaI/rplM= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk= +github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4= +github.com/yl2chen/cidranger v1.0.2 h1:lbOWZVCG1tCRX4u24kuM1Tb4nHqWkDxwLdoS+SevawU= +github.com/yl2chen/cidranger v1.0.2/go.mod h1:9U1yz7WPYDwf0vpNWFaeRh0bjwz5RVgRy/9UEQfHl0g= +golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= +golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I= +golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= +golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 h1:qWPm9rbaAMKs8Bq/9LRpbMqxWRVUAQwMI9fVrssnTfw= +golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= +golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ= +golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210403161142-5e06dd20ab57/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210917161153-d61c044b1678 h1:J27LZFQBFoihqXoegpscI10HpjZ7B5WQLLKL2FZXQKw= +golang.org/x/sys v0.0.0-20210917161153-d61c044b1678/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw= +golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= +golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= +golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= +golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= +golang.zx2c4.com/wireguard v0.0.0-20210905140043-2ef39d47540c h1:IsAez/yRA23H/i9A02IHbYnmtVOs7DsP3aVP2cu5SNE= +golang.zx2c4.com/wireguard v0.0.0-20210905140043-2ef39d47540c/go.mod h1:laHzsbfMhGSobUmruXWAyMKKHSqvIcrqZJMyHD+/3O8= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= diff --git a/Other/tun2socks/main.go b/Other/tun2socks/main.go new file mode 100644 index 0000000..2179c70 --- /dev/null +++ b/Other/tun2socks/main.go @@ -0,0 +1,324 @@ +// tun2socks.bin: a wintun based TUN to SOCKS5 forwarder, loaded by Netrix as a DLL. +// +// Rebuilt from the decompiled Storage/tun2socks.bin (go1.17.1). Netrix drives it through +// the exported C functions below, see Netrix/Interops/tun2socks.cs. +package main + +// #include +import "C" + +import ( + "bufio" + "log" + "net" + "os" + "strconv" + "strings" + "sync" + "unsafe" + + "github.com/yl2chen/cidranger" + "golang.org/x/sys/windows" + "golang.zx2c4.com/wireguard/tun" + + "rixcloud.moe/aiocloud/tun2socks/adns" + "rixcloud.moe/aiocloud/tun2socks/core" + "rixcloud.moe/aiocloud/tun2socks/proxies" + "rixcloud.moe/aiocloud/tun2socks/proxies/socks" + "rixcloud.moe/aiocloud/tun2socks/structs" +) + +// First argument of tun_dial, same order as NameList in Netrix/Interops/tun2socks.cs. +const ( + typeBypassBind = iota // local address that direct connections bind to + typeBypassList // file with bypass CIDRs, one per line, or "disabled" + typeDNSAddress // "tls://host:port", "tcp://host:port" or "host:port" + typeAdapterMTU + typeTCPReset // starts a new TCP server description + typeTCPType + typeTCPHost + typeTCPUser + typeTCPPass + typeTCPMethod + typeTCPProtocol + typeTCPProtocolParam + typeTCPOBFS + typeTCPOBFSParam + typeUDPReset // starts a new UDP server description + typeUDPType + typeUDPHost + typeUDPUser + typeUDPPass + typeUDPMethod + typeUDPProtocol + typeUDPProtocolParam + typeUDPOBFS + typeUDPOBFSParam + typeBlockIPv6 // "1": reject IPv6 connections so clients fall back to IPv4, "0": relay them +) + +const ( + adapterName = "aioCloud" + adapterGUID = "{14EA48E9-69FA-409F-8752-22563978E802}" +) + +var ( + bypassBind = "10.0.0.100" + bypassList = "disabled" + mtu = 1500 + + tcpInfo, udpInfo *structs.ServerInfo + + device tun.Device + stack core.LWIPStack + ranger cidranger.Ranger + + running bool + + upLock, downLock sync.Mutex + upload, download uint64 +) + +// init sends log output and Go runtime crash reports (panics, fatal errors) to logging\tun2socks.log: +// Netrix is a GUI process without a console, so they would otherwise vanish. +func init() { + file, err := os.OpenFile(`logging\tun2socks.log`, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0o644) + if err != nil { + return + } + + os.Stderr = file + log.SetOutput(file) + windows.SetStdHandle(windows.STD_ERROR_HANDLE, windows.Handle(file.Fd())) +} + +//export tun_dial +func tun_dial(name int, value *byte) bool { + str := C.GoString((*C.char)(unsafe.Pointer(value))) + + switch name { + case typeBypassBind: + bypassBind = str + case typeBypassList: + bypassList = str + case typeDNSAddress: + dialDNS(str) + case typeBlockIPv6: + proxies.BlockIPv6 = str == "1" + case typeAdapterMTU: + n, err := strconv.Atoi(str) + if err != nil { + panic(err) + } + mtu = n + case typeTCPReset: + tcpInfo = new(structs.ServerInfo) + case typeUDPReset: + udpInfo = new(structs.ServerInfo) + default: + if name >= typeTCPType && name <= typeTCPOBFSParam && tcpInfo != nil { + setField(tcpInfo, name-typeTCPType, str) + } else if name >= typeUDPType && name <= typeUDPOBFSParam && udpInfo != nil { + setField(udpInfo, name-typeUDPType, str) + } else { + return false + } + } + + return true +} + +// dialDNS splits "scheme://address": "tls" selects DNS over TLS, any other scheme plain TCP. +// Without a scheme only the address changes. +func dialDNS(value string) { + parts := strings.SplitN(value, "://", 2) + if len(parts) != 2 { + adns.Address = value + return + } + + adns.Address = parts[1] + if parts[0] == "tls" { + adns.Client.Net = "tcp-tls" + } else { + adns.Client.Net = "tcp" + } +} + +// setField sets the n-th field of a server description: +// type, host, user, pass, method, protocol, protocol param, obfs, obfs param. +func setField(info *structs.ServerInfo, n int, value string) { + fields := [...]*string{ + &info.Type, &info.Hostname, &info.Username, &info.Password, &info.Method, + &info.Prot, &info.ProtParam, &info.OBFS, &info.OBFSParam, + } + + *fields[n] = value +} + +//export tun_init +func tun_init() bool { + upload, download = 0, 0 + + if !newRanger() { + return false + } + + guid, err := windows.GUIDFromString(adapterGUID) + if err != nil { + log.Printf("[tun2socks][newTUN][windows.GUIDFromString] %v", err) + return false + } + + device, err = tun.CreateTUNWithRequestedGUID(adapterName, &guid, mtu) + if err != nil { + log.Printf("[tun2socks][newTUN][tun.CreateTUN] %v", err) + return false + } + + // only SOCKS5 is supported + if tcpInfo == nil || udpInfo == nil || !isSocks(tcpInfo.Type) || !isSocks(udpInfo.Type) { + log.Printf("[tun2socks][proxies.NewHandler] Unknown Type") + return false + } + + binder := &net.TCPAddr{IP: net.ParseIP(bypassBind)} + + core.RegisterTCPConnHandler(proxies.NewTCPHandler(socks.NewTCPHandler(tcpInfo), binder, ranger)) + core.RegisterUDPConnHandler(proxies.NewUDPHandler(socks.NewUDPHandler(udpInfo))) + + stack = core.NewLWIPStack() + core.RegisterOutputFn(toDevice) + + running = true + + go fromDevice() + + return true +} + +func isSocks(kind string) bool { + return kind == "S5" || kind == "Socks" || kind == "Socks5" +} + +// toDevice writes a packet from lwIP to the TUN device. +func toDevice(data []byte) (int, error) { + if !running { + return len(data), nil + } + + downLock.Lock() + download += uint64(len(data)) + downLock.Unlock() + + return device.Write(data, 0) +} + +// fromDevice feeds packets read from the TUN device into lwIP. +func fromDevice() { + buf := make([]byte, mtu) + + for running { + n, err := device.Read(buf, 0) + if err != nil { + if err == os.ErrClosed { + log.Println("[tun2socks] Closed") + return + } + + log.Printf("[tun2socks][device.Read] %v", err) + return + } + + // oversized packet + if n > mtu { + continue + } + + upLock.Lock() + upload += uint64(n) + upLock.Unlock() + + // IPv4 or IPv6 only + if version := buf[0] >> 4; version != 4 && version != 6 { + continue + } + + if _, err := stack.Write(buf[:n]); err != nil { + log.Printf("[tun2socks][lwip.Write] %v", err) + } + } +} + +//export tun_free +func tun_free() bool { + running = false + + if stack != nil { + stack.Close() + } + + if device != nil { + device.Close() + } + + stack, device, ranger = nil, nil, nil + + return true +} + +//export tun_luid +func tun_luid() uint64 { + return device.(*tun.NativeTun).LUID() +} + +//export tun_getUP +func tun_getUP() uint64 { + upLock.Lock() + defer upLock.Unlock() + + return upload +} + +//export tun_getDL +func tun_getDL() uint64 { + downLock.Lock() + defer downLock.Unlock() + + return download +} + +// newRanger loads the bypass list; "disabled" means no bypass at all. +func newRanger() bool { + if bypassList == "disabled" { + ranger = nil + return true + } + + file, err := os.OpenFile(bypassList, os.O_RDONLY, 0) + if err != nil { + log.Printf("[tun2socks][newRanger][os.Open] %v", err) + return false + } + defer file.Close() + + ranger = cidranger.NewPCTrieRanger() + + scanner := bufio.NewScanner(file) + + for scanner.Scan() { + _, network, err := net.ParseCIDR(strings.TrimSpace(scanner.Text())) + if err != nil { + log.Printf("[tun2socks][newRanger][net.ParseCIDR] %v", err) + continue + } + + if err := ranger.Insert(cidranger.NewBasicRangerEntry(*network)); err != nil { + log.Printf("[tun2socks][newRanger][ranger.Insert] %v", err) + } + } + + return true +} + +func main() {} diff --git a/Other/tun2socks/proxies/proxies.go b/Other/tun2socks/proxies/proxies.go new file mode 100644 index 0000000..acde1f3 --- /dev/null +++ b/Other/tun2socks/proxies/proxies.go @@ -0,0 +1,90 @@ +package proxies + +import ( + "errors" + "net" + "time" + + "github.com/yl2chen/cidranger" + + "rixcloud.moe/aiocloud/tun2socks/adns" + "rixcloud.moe/aiocloud/tun2socks/core" + "rixcloud.moe/aiocloud/tun2socks/tools" +) + +const dialTimeout = 10 * time.Second + +// BlockIPv6 rejects every IPv6 connection: used when the server has no IPv6 egress, so clients fall back to IPv4 +// at once instead of hanging on a connection the server can never open. +var BlockIPv6 bool + +var errBlockedIPv6 = errors.New("IPv6 blocked: the server has no IPv6 path") + +type tcpHandler struct { + h core.TCPConnHandler + binder *net.TCPAddr + ranger cidranger.Ranger +} + +// NewTCPHandler sends connections to IPv4 addresses listed in ranger straight out of the +// local address binder; everything else goes through h. +func NewTCPHandler(h core.TCPConnHandler, binder *net.TCPAddr, ranger cidranger.Ranger) core.TCPConnHandler { + return &tcpHandler{h: h, binder: binder, ranger: ranger} +} + +func (h *tcpHandler) Handle(conn net.Conn, target *net.TCPAddr) error { + if BlockIPv6 && target.IP.To4() == nil { + return errBlockedIPv6 + } + + if h.ranger != nil { + if ip := target.IP.To4(); ip != nil { + bypass, err := h.ranger.Contains(ip) + if err != nil { + return err + } + + if bypass { + dialer := &net.Dialer{Timeout: dialTimeout, KeepAlive: dialTimeout, LocalAddr: h.binder} + + remote, err := dialer.Dial("tcp", target.String()) + if err != nil { + return err + } + + go tools.CopyBuffer(conn, remote) + + return nil + } + } + } + + return h.h.Handle(conn, target) +} + +type udpHandler struct { + h core.UDPConnHandler +} + +// NewUDPHandler answers DNS (port 53) itself and passes everything else to h. +func NewUDPHandler(h core.UDPConnHandler) core.UDPConnHandler { + return &udpHandler{h: h} +} + +func (h *udpHandler) Connect(conn core.UDPConn, target *net.UDPAddr) error { + if BlockIPv6 && target != nil && target.IP.To4() == nil { + return errBlockedIPv6 + } + + return h.h.Connect(conn, target) +} + +func (h *udpHandler) ReceiveTo(conn core.UDPConn, data []byte, addr *net.UDPAddr) error { + if addr.Port != 53 { + return h.h.ReceiveTo(conn, data, addr) + } + + go adns.Handle(conn, data, addr) + + return nil +} diff --git a/Other/tun2socks/proxies/proxies_test.go b/Other/tun2socks/proxies/proxies_test.go new file mode 100644 index 0000000..0ae4433 --- /dev/null +++ b/Other/tun2socks/proxies/proxies_test.go @@ -0,0 +1,152 @@ +package proxies + +import ( + "io" + "net" + "testing" + "time" + + "github.com/yl2chen/cidranger" + + "rixcloud.moe/aiocloud/tun2socks/core" +) + +type recordTCP struct{ called bool } + +func (r *recordTCP) Handle(conn net.Conn, target *net.TCPAddr) error { + r.called = true + return nil +} + +type recordUDP struct{ connect, receive int } + +func (r *recordUDP) Connect(conn core.UDPConn, target *net.UDPAddr) error { + r.connect++ + return nil +} + +func (r *recordUDP) ReceiveTo(conn core.UDPConn, data []byte, addr *net.UDPAddr) error { + r.receive++ + return nil +} + +func echoServer(t *testing.T) *net.TCPAddr { + l, err := net.Listen("tcp", "127.0.0.1:0") + if err != nil { + t.Fatal(err) + } + t.Cleanup(func() { l.Close() }) + + go func() { + for { + c, err := l.Accept() + if err != nil { + return + } + go func() { defer c.Close(); io.Copy(c, c) }() + } + }() + + return l.Addr().(*net.TCPAddr) +} + +func rangerOf(t *testing.T, cidrs ...string) cidranger.Ranger { + r := cidranger.NewPCTrieRanger() + for _, c := range cidrs { + _, n, err := net.ParseCIDR(c) + if err != nil { + t.Fatal(err) + } + r.Insert(cidranger.NewBasicRangerEntry(*n)) + } + return r +} + +func TestTCPBypassDialsDirect(t *testing.T) { + target := echoServer(t) + proxy := &recordTCP{} + h := NewTCPHandler(proxy, &net.TCPAddr{IP: net.ParseIP("127.0.0.1")}, rangerOf(t, "127.0.0.0/8")) + + client, local := net.Pipe() + t.Cleanup(func() { client.Close(); local.Close() }) + + if err := h.Handle(local, target); err != nil { + t.Fatal(err) + } + if proxy.called { + t.Fatal("bypassed address went to the proxy") + } + + client.Write([]byte("hi")) + client.SetReadDeadline(time.Now().Add(3 * time.Second)) + got := make([]byte, 2) + if _, err := io.ReadFull(client, got); err != nil || string(got) != "hi" { + t.Fatalf("got %q, %v", got, err) + } +} + +func TestTCPNotInListGoesToProxy(t *testing.T) { + proxy := &recordTCP{} + h := NewTCPHandler(proxy, nil, rangerOf(t, "10.0.0.0/8")) + + h.Handle(nil, &net.TCPAddr{IP: net.ParseIP("8.8.8.8"), Port: 443}) + if !proxy.called { + t.Fatal("expected the proxy handler") + } +} + +func TestTCPNoRangerGoesToProxy(t *testing.T) { + proxy := &recordTCP{} + h := NewTCPHandler(proxy, nil, nil) + + h.Handle(nil, &net.TCPAddr{IP: net.ParseIP("8.8.8.8"), Port: 443}) + if !proxy.called { + t.Fatal("expected the proxy handler") + } +} + +func TestTCPIPv6GoesToProxy(t *testing.T) { + proxy := &recordTCP{} + h := NewTCPHandler(proxy, nil, rangerOf(t, "0.0.0.0/0")) + + h.Handle(nil, &net.TCPAddr{IP: net.ParseIP("2001:db8::1"), Port: 443}) + if !proxy.called { + t.Fatal("IPv6 targets are never matched against the IPv4 list") + } +} + +func TestUDPNonDNSGoesToProxy(t *testing.T) { + proxy := &recordUDP{} + h := NewUDPHandler(proxy) + + h.Connect(nil, nil) + h.ReceiveTo(nil, []byte{1}, &net.UDPAddr{IP: net.ParseIP("1.1.1.1"), Port: 443}) + + if proxy.connect != 1 || proxy.receive != 1 { + t.Fatalf("connect=%d receive=%d", proxy.connect, proxy.receive) + } +} + +func TestBlockIPv6(t *testing.T) { + BlockIPv6 = true + t.Cleanup(func() { BlockIPv6 = false }) + + tcp, udp := &recordTCP{}, &recordUDP{} + v6, v4 := net.ParseIP("2606:4700::1111"), net.ParseIP("1.1.1.1") + + if err := NewTCPHandler(tcp, nil, nil).Handle(nil, &net.TCPAddr{IP: v6, Port: 80}); err == nil || tcp.called { + t.Fatal("IPv6 TCP must be rejected before reaching the server") + } + + if err := NewTCPHandler(tcp, nil, nil).Handle(nil, &net.TCPAddr{IP: v4, Port: 80}); err != nil || !tcp.called { + t.Fatal("IPv4 TCP must pass") + } + + if err := NewUDPHandler(udp).Connect(nil, &net.UDPAddr{IP: v6, Port: 443}); err == nil || udp.connect != 0 { + t.Fatal("IPv6 UDP must be rejected") + } + + if err := NewUDPHandler(udp).Connect(nil, nil); err != nil || udp.connect != 1 { + t.Fatal("UDP with no target yet must pass") + } +} diff --git a/Other/tun2socks/proxies/socks/socks.go b/Other/tun2socks/proxies/socks/socks.go new file mode 100644 index 0000000..d0ff543 --- /dev/null +++ b/Other/tun2socks/proxies/socks/socks.go @@ -0,0 +1,60 @@ +package socks + +import ( + "bytes" + "errors" + "io" + "net" + + "rixcloud.moe/aiocloud/tun2socks/structs" +) + +// handshake dials the SOCKS5 server and negotiates the authentication method +// (no authentication, or username/password). buf needs at least 2 bytes. +func handshake(t *structs.ServerInfo, buf []byte) (net.Conn, error) { + c, err := net.Dial("tcp", t.Hostname) + if err != nil { + return nil, err + } + + // version 5, 2 methods: 0x00 no authentication, 0x02 username/password + if _, err = c.Write([]byte{5, 2, 0, 2}); err != nil { + c.Close() + return nil, err + } + + if _, err = io.ReadAtLeast(c, buf[:2], 2); err != nil { + c.Close() + return nil, err + } + + switch buf[1] { + case 0: + case 2: + auth := bytes.NewBuffer([]byte{1}) + auth.WriteByte(byte(len(t.Username))) + auth.Write([]byte(t.Username)) + auth.WriteByte(byte(len(t.Password))) + auth.Write([]byte(t.Password)) + + if _, err = c.Write(auth.Bytes()); err != nil { + c.Close() + return nil, err + } + + if _, err = io.ReadAtLeast(c, buf[:2], 2); err != nil { + c.Close() + return nil, err + } + + if buf[1] != 0 { + c.Close() + return nil, errors.New("authentication failed") + } + default: + c.Close() + return nil, errors.New("unknown method") + } + + return c, nil +} diff --git a/Other/tun2socks/proxies/socks/socks_test.go b/Other/tun2socks/proxies/socks/socks_test.go new file mode 100644 index 0000000..f089e62 --- /dev/null +++ b/Other/tun2socks/proxies/socks/socks_test.go @@ -0,0 +1,162 @@ +package socks + +import ( + "io" + "net" + "testing" + "time" + + "rixcloud.moe/aiocloud/tun2socks/structs" +) + +// fakeServer is a minimal SOCKS5 server: method negotiation, optional user/pass, one CONNECT. +type fakeServer struct { + l net.Listener + method byte // method chosen in the reply (0 or 2, anything else is "unknown") + user string // expected credentials when method == 2 + pass string + authFail bool +} + +func newFakeServer(t *testing.T, method byte) *fakeServer { + l, err := net.Listen("tcp", "127.0.0.1:0") + if err != nil { + t.Fatal(err) + } + t.Cleanup(func() { l.Close() }) + + s := &fakeServer{l: l, method: method, user: "user", pass: "pass"} + go s.serve() + return s +} + +func (s *fakeServer) info() *structs.ServerInfo { + return &structs.ServerInfo{Type: "Socks5", Hostname: s.l.Addr().String(), Username: "user", Password: "pass"} +} + +func (s *fakeServer) serve() { + for { + c, err := s.l.Accept() + if err != nil { + return + } + go s.handle(c) + } +} + +func (s *fakeServer) handle(c net.Conn) { + defer c.Close() + + greeting := make([]byte, 4) + if _, err := io.ReadFull(c, greeting); err != nil || greeting[0] != 5 || greeting[1] != 2 || greeting[2] != 0 || greeting[3] != 2 { + return + } + + c.Write([]byte{5, s.method}) + if s.method == 2 { + head := make([]byte, 2) + io.ReadFull(c, head[:2]) + user := make([]byte, head[1]) + io.ReadFull(c, user) + plen := make([]byte, 1) + io.ReadFull(c, plen) + pass := make([]byte, plen[0]) + io.ReadFull(c, pass) + + if head[0] != 1 || string(user) != s.user || string(pass) != s.pass || s.authFail { + c.Write([]byte{1, 1}) + return + } + c.Write([]byte{1, 0}) + } + if s.method != 0 && s.method != 2 { + return + } + + // CONNECT 5 1 0 atyp addr port + req := make([]byte, 4) + if _, err := io.ReadFull(c, req); err != nil || req[1] != 1 { + return + } + switch req[3] { + case 1: + io.ReadFull(c, make([]byte, 6)) + case 3: + n := make([]byte, 1) + io.ReadFull(c, n) + io.ReadFull(c, make([]byte, int(n[0])+2)) + case 4: + io.ReadFull(c, make([]byte, 18)) + } + + c.Write([]byte{5, 0, 0, 1, 0, 0, 0, 0, 0, 0}) + + // echo + io.Copy(c, c) +} + +func TestHandshakeNoAuth(t *testing.T) { + s := newFakeServer(t, 0) + c, err := handshake(s.info(), make([]byte, 0x103)) + if err != nil { + t.Fatal(err) + } + c.Close() +} + +func TestHandshakeUserPass(t *testing.T) { + s := newFakeServer(t, 2) + c, err := handshake(s.info(), make([]byte, 0x103)) + if err != nil { + t.Fatal(err) + } + c.Close() +} + +func TestHandshakeAuthFailed(t *testing.T) { + s := newFakeServer(t, 2) + s.authFail = true + if _, err := handshake(s.info(), make([]byte, 0x103)); err == nil || err.Error() != "authentication failed" { + t.Fatalf("got %v", err) + } +} + +func TestHandshakeUnknownMethod(t *testing.T) { + s := newFakeServer(t, 0xff) + if _, err := handshake(s.info(), make([]byte, 0x103)); err == nil || err.Error() != "unknown method" { + t.Fatalf("got %v", err) + } +} + +func TestTCPHandleRelaysThroughServer(t *testing.T) { + s := newFakeServer(t, 2) + h := NewTCPHandler(s.info()) + + client, local := net.Pipe() + t.Cleanup(func() { client.Close(); local.Close() }) + + if err := h.Handle(local, &net.TCPAddr{IP: net.ParseIP("93.184.216.34"), Port: 80}); err != nil { + t.Fatal(err) + } + + if _, err := client.Write([]byte("ping")); err != nil { + t.Fatal(err) + } + + client.SetReadDeadline(time.Now().Add(3 * time.Second)) + got := make([]byte, 4) + if _, err := io.ReadFull(client, got); err != nil || string(got) != "ping" { + t.Fatalf("got %q, %v", got, err) + } +} + +func TestTCPHandleServerDown(t *testing.T) { + l, _ := net.Listen("tcp", "127.0.0.1:0") + addr := l.Addr().String() + l.Close() + + h := NewTCPHandler(&structs.ServerInfo{Hostname: addr}) + if err := h.Handle(nil, &net.TCPAddr{IP: net.ParseIP("1.2.3.4"), Port: 80}); err == nil { + t.Fatal("expected an error") + } +} diff --git a/Other/tun2socks/proxies/socks/tcp.go b/Other/tun2socks/proxies/socks/tcp.go new file mode 100644 index 0000000..b372583 --- /dev/null +++ b/Other/tun2socks/proxies/socks/tcp.go @@ -0,0 +1,57 @@ +package socks + +import ( + "io" + "log" + "net" + + "github.com/shadowsocks/go-shadowsocks2/socks" + + "rixcloud.moe/aiocloud/tun2socks/core" + "rixcloud.moe/aiocloud/tun2socks/structs" + "rixcloud.moe/aiocloud/tun2socks/tools" +) + +type tcpHandler struct { + t *structs.ServerInfo +} + +// NewTCPHandler relays TCP connections through the SOCKS5 server described by t. +func NewTCPHandler(t *structs.ServerInfo) core.TCPConnHandler { + return &tcpHandler{t: t} +} + +func (h *tcpHandler) Handle(conn net.Conn, target *net.TCPAddr) error { + buf := make([]byte, socks.MaxAddrLen) + + remote, err := handshake(h.t, buf) + if err != nil { + log.Printf("[tun2socks][TCP][socks][handshake] %v", err) + return err + } + + // CONNECT request: version 5, command 1, reserved 0, then the target address + request := append([]byte{5, 1, 0}, socks.ParseAddr(target.String())...) + if _, err = remote.Write(request); err != nil { + log.Printf("[tun2socks][TCP][socks][remote.Write] %v", err) + remote.Close() + return err + } + + // the reply code is not checked, only the reply is consumed + if _, err = io.ReadAtLeast(remote, buf[:3], 3); err != nil { + log.Printf("[tun2socks][TCP][socks][io.ReadFull] %v", err) + remote.Close() + return err + } + + if _, err = socks.ReadAddr(remote); err != nil { + log.Printf("[tun2socks][TCP][socks][socks.ReadAddr] %v", err) + remote.Close() + return err + } + + go tools.CopyBuffer(conn, remote) + + return nil +} diff --git a/Other/tun2socks/proxies/socks/udp.go b/Other/tun2socks/proxies/socks/udp.go new file mode 100644 index 0000000..56b5f0a --- /dev/null +++ b/Other/tun2socks/proxies/socks/udp.go @@ -0,0 +1,197 @@ +package socks + +import ( + "fmt" + "io" + "log" + "net" + "sync" + "time" + + "github.com/shadowsocks/go-shadowsocks2/socks" + + "rixcloud.moe/aiocloud/tun2socks/core" + "rixcloud.moe/aiocloud/tun2socks/structs" +) + +const ( + // SOCKS5 UDP header: RSV(2) + FRAG(1) + headerSize = 3 + + readBufferSize = 0x5dc + readTimeout = 30 * time.Second +) + +// udpData is the state of one UDP association: the TCP control connection, the local +// socket used to talk to the relay, and the relay address. +type udpData struct { + StreamConn net.Conn + PacketConn net.PacketConn + Target *net.UDPAddr +} + +type udpHandler struct { + sync.Mutex + + t *structs.ServerInfo + conns map[core.UDPConn]*udpData +} + +// NewUDPHandler relays UDP packets through the SOCKS5 server described by t (UDP ASSOCIATE). +func NewUDPHandler(t *structs.ServerInfo) core.UDPConnHandler { + return &udpHandler{t: t, conns: make(map[core.UDPConn]*udpData)} +} + +// handle holds the association open: it returns when the TCP control connection ends. +func (h *udpHandler) handle(c net.Conn) { + defer c.Close() + + buf := make([]byte, 1) + for { + if _, err := c.Read(buf); err != nil { + return + } + } +} + +// fetchInput forwards relay replies back to the TUN until the relay stays silent for readTimeout. +func (h *udpHandler) fetchInput(conn core.UDPConn, pc net.PacketConn) { + defer h.Close(conn) + + buf := make([]byte, readBufferSize) + for { + pc.SetReadDeadline(time.Now().Add(readTimeout)) + + n, _, err := pc.ReadFrom(buf) + if err != nil { + return + } + + if n < headerSize { + log.Println("[tun2socks][UDP][socks][fetchInput] Short packet") + continue + } + + addr := socks.SplitAddr(buf[headerSize:n]) + if addr == nil { + log.Println("[tun2socks][UDP][socks][fetchInput] Wrong destination address") + continue + } + + source, err := net.ResolveUDPAddr("udp", addr.String()) + if err != nil { + log.Printf("[tun2socks][UDP][socks][fetchInput] Failed to resolve target address: %v", err) + continue + } + + if _, err = conn.WriteFrom(buf[headerSize+len(addr):n], source); err != nil { + log.Printf("[tun2socks][UDP][socks][fetchInput] Unable to write data packet: %v", err) + return + } + } +} + +func (h *udpHandler) Connect(conn core.UDPConn, target *net.UDPAddr) error { + buf := make([]byte, socks.MaxAddrLen) + + c, err := handshake(h.t, buf) + if err != nil { + log.Printf("[tun2socks][UDP][socks][Connect] Handshake failed: %v", err) + return err + } + + // UDP ASSOCIATE request: version 5, command 3, reserved 0, IPv4 0.0.0.0:0 + if _, err = c.Write([]byte{5, 3, 0, 1, 0, 0, 0, 0, 0, 0}); err != nil { + log.Printf("[tun2socks][UDP][socks][Connect] Failed to write handshake data: %v", err) + c.Close() + return err + } + + if _, err = io.ReadAtLeast(c, buf[:3], 3); err != nil { + log.Printf("[tun2socks][UDP][socks][Connect] Failed to read handshake data: %v", err) + c.Close() + return err + } + + if buf[1] != 0 { + log.Printf("[tun2socks][UDP][socks][Connect] The server refused the connection: %x", buf[1]) + c.Close() + return fmt.Errorf("[tun2socks][UDP][socks][Connect] The server refused the connection: %x", buf[1]) + } + + relay, err := socks.ReadAddr(c) + if err != nil { + log.Printf("[tun2socks][UDP][socks][Connect] Failed to read remote address: %v", err) + c.Close() + return err + } + + relayAddr, err := net.ResolveUDPAddr("udp", relay.String()) + if err != nil { + log.Printf("[tun2socks][UDP][socks][Connect] Failed to resolve remote address: %v", err) + c.Close() + return err + } + + go h.handle(c) + + pc, err := net.ListenPacket("udp", "") + if err != nil { + log.Printf("[tun2socks][UDP][socks][Connect]Failed to bind socket: %v", err) + c.Close() + return err + } + + h.Lock() + h.conns[conn] = &udpData{StreamConn: c, PacketConn: pc, Target: relayAddr} + h.Unlock() + + go h.fetchInput(conn, pc) + + return nil +} + +func (h *udpHandler) ReceiveTo(conn core.UDPConn, data []byte, addr *net.UDPAddr) error { + h.Lock() + d, ok := h.conns[conn] + h.Unlock() + + if !ok { + h.Close(conn) + log.Println("[tun2socks][UDP][socks][ReceiveTo] Non-existent connection") + return io.EOF + } + + // SOCKS5 UDP header: RSV(2) + FRAG(1) are zero, then the destination address and the payload + destination := socks.ParseAddr(addr.String()) + + packet := make([]byte, headerSize+len(destination)+len(data)) + copy(packet[headerSize:], destination) + copy(packet[headerSize+len(destination):], data) + + if _, err := d.PacketConn.WriteTo(packet, d.Target); err != nil { + h.Close(conn) + log.Printf("[tun2socks][UDP][socks][ReceiveTo] Failed to send data: %v", err) + return io.EOF + } + + return nil +} + +// Close ends the association: control connection, relay socket and the core connection. +func (h *udpHandler) Close(conn core.UDPConn) { + h.Lock() + defer h.Unlock() + + if d, ok := h.conns[conn]; ok { + if d.StreamConn != nil { + d.StreamConn.Close() + } + if d.PacketConn != nil { + d.PacketConn.Close() + } + + delete(h.conns, conn) + conn.Close() + } +} diff --git a/Other/tun2socks/proxies/socks/udp_test.go b/Other/tun2socks/proxies/socks/udp_test.go new file mode 100644 index 0000000..52c7c94 --- /dev/null +++ b/Other/tun2socks/proxies/socks/udp_test.go @@ -0,0 +1,131 @@ +package socks + +import ( + "io" + "net" + "testing" + "time" + + "github.com/shadowsocks/go-shadowsocks2/socks" + + "rixcloud.moe/aiocloud/tun2socks/structs" +) + +type fakeConn struct { + got chan []byte + from chan *net.UDPAddr + closed chan struct{} +} + +func newFakeConn() *fakeConn { + return &fakeConn{got: make(chan []byte, 4), from: make(chan *net.UDPAddr, 4), closed: make(chan struct{}, 1)} +} + +func (f *fakeConn) LocalAddr() *net.UDPAddr { return nil } +func (f *fakeConn) ReceiveTo(data []byte, addr *net.UDPAddr) error { return nil } +func (f *fakeConn) Close() error { f.closed <- struct{}{}; return nil } +func (f *fakeConn) WriteFrom(data []byte, addr *net.UDPAddr) (int, error) { + f.got <- append([]byte(nil), data...) + f.from <- addr + return len(data), nil +} + +// udpAssociateServer answers UDP ASSOCIATE and echoes every relayed datagram back unchanged. +func udpAssociateServer(t *testing.T) *structs.ServerInfo { + relay, err := net.ListenPacket("udp", "127.0.0.1:0") + if err != nil { + t.Fatal(err) + } + t.Cleanup(func() { relay.Close() }) + + go func() { + buf := make([]byte, 2048) + for { + n, from, err := relay.ReadFrom(buf) + if err != nil { + return + } + relay.WriteTo(buf[:n], from) + } + }() + + l, err := net.Listen("tcp", "127.0.0.1:0") + if err != nil { + t.Fatal(err) + } + t.Cleanup(func() { l.Close() }) + + go func() { + for { + c, err := l.Accept() + if err != nil { + return + } + go func() { + defer c.Close() + io.ReadFull(c, make([]byte, 4)) + c.Write([]byte{5, 0}) + io.ReadFull(c, make([]byte, 10)) // UDP ASSOCIATE request + bind := relay.LocalAddr().(*net.UDPAddr) + reply := append([]byte{5, 0, 0}, socks.ParseAddr(bind.String())...) + c.Write(reply) + io.Copy(io.Discard, c) // keep the association open + }() + } + }() + + return &structs.ServerInfo{Type: "Socks5", Hostname: l.Addr().String()} +} + +func TestUDPAssociateRoundTrip(t *testing.T) { + h := NewUDPHandler(udpAssociateServer(t)) + conn := newFakeConn() + + if err := h.Connect(conn, nil); err != nil { + t.Fatal(err) + } + + dest := &net.UDPAddr{IP: net.ParseIP("8.8.4.4"), Port: 5353} + if err := h.ReceiveTo(conn, []byte("hello"), dest); err != nil { + t.Fatal(err) + } + + select { + case data := <-conn.got: + if string(data) != "hello" { + t.Fatalf("payload %q", data) + } + if from := <-conn.from; !from.IP.Equal(dest.IP) || from.Port != dest.Port { + t.Fatalf("source %v, want %v", from, dest) + } + case <-time.After(3 * time.Second): + t.Fatal("no reply written back to the TUN") + } + + h.(*udpHandler).Close(conn) + select { + case <-conn.closed: + case <-time.After(time.Second): + t.Fatal("Close did not close the core connection") + } +} + +func TestUDPReceiveToWithoutConnectFails(t *testing.T) { + h := NewUDPHandler(&structs.ServerInfo{}) + conn := newFakeConn() + + if err := h.ReceiveTo(conn, []byte("x"), &net.UDPAddr{IP: net.ParseIP("1.1.1.1"), Port: 1}); err != io.EOF { + t.Fatalf("got %v, want io.EOF", err) + } +} + +func TestUDPConnectRefused(t *testing.T) { + l, _ := net.Listen("tcp", "127.0.0.1:0") + addr := l.Addr().String() + l.Close() + + h := NewUDPHandler(&structs.ServerInfo{Hostname: addr}) + if err := h.Connect(newFakeConn(), nil); err == nil { + t.Fatal("expected an error") + } +} diff --git a/Other/tun2socks/recovered/decompiled/adns.Handle.c b/Other/tun2socks/recovered/decompiled/adns.Handle.c new file mode 100644 index 0000000..7c17851 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/adns.Handle.c @@ -0,0 +1,200 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/adns.Handle @ 2394ec180 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239738ca8 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/adns/adns.go:21 +// Golang stacktrace signature: func rixcloud.moe/aiocloud/tun2socks/adns.Handle() ??? + +void rixcloud.moe/aiocloud/tun2socks/adns::rixcloud_moe_aiocloud_tun2socks_adns_Handle + (int param_1,undefined8 param_2,undefined8 param_3,undefined8 param_4,int param_5, + undefined8 param_6) + +{ + uint16 uVar1; + uint16 uVar2; + char *pcVar3; + github_com_miekg_dns_RR_itab *extraout_RAX; + undefined8 extraout_RAX_00; + github_com_miekg_dns_Msg *self; + undefined8 extraout_RAX_01; + int extraout_RCX; + undefined8 extraout_RCX_00; + int extraout_RCX_01; + undefined8 extraout_RCX_02; + unsafe_Pointer extraout_RBX; + undefined8 extraout_RBX_00; + undefined8 extraout_RBX_01; + undefined8 extraout_RSI; + undefined8 extraout_RSI_00; + undefined8 extraout_RDI; + int extraout_RDI_00; + undefined8 extraout_RDI_01; + int extraout_RDI_02; + runtime__type *prVar4; + undefined8 uVar5; + error eVar6; + string sVar7; + string format_00; + string format_01; + string format_02; + string format_03; + __github_com_miekg_dns_Question _Var8; + __github_com_miekg_dns_RR _Var9; + __uint8 _Var10; + __interface___ v; + __interface___ a; + __interface___ v_00; + __interface___ v_01; + __interface___ v_02; + __interface___ v_03; + int iStack0000000000000008; + undefined8 uStack0000000000000010; + undefined8 uStack0000000000000018; + runtime_slice in_stack_fffffffffffffe80; + runtime__type *local_128; + unsafe_Pointer pvStack_120; + github_com_miekg_dns_Msg local_118; + github_com_miekg_dns_Msg local_90; + string format; + + prVar4 = (runtime__type *)0x0; + uVar5 = 0; + iStack0000000000000008 = param_1; + uStack0000000000000010 = param_2; + while (uStack0000000000000018 = param_3, &local_118.MsgHdr.Rcode <= CURRENT_G.stackguard0) { + runtime::runtime_morestack_noctxt(); + param_3 = uStack0000000000000018; + } + local_90.MsgHdr.Id = 0; + local_90.MsgHdr.Response = false; + local_90.MsgHdr._3_5_ = 0; + runtime::runtime_duffzero_239343a62(&local_90.MsgHdr.Opcode); + _Var10.len = param_4; + _Var10.array = (uint8 *)param_3; + _Var10.cap = param_5; + eVar6 = github.com/miekg/dns::github_com_miekg_dns___Msg__Unpack(&local_90,_Var10); + pvStack_120 = eVar6.data; + if (eVar6.tab != (error_itab *)0x0) { + local_128 = (eVar6.tab)->_type; + sVar7.len = 0x2b; + sVar7.str = "[tun2socks][adns] Failed to unpack data: %v"; + v.len = 1; + v.array = (interface___ *)&local_128; + v.cap = 1; + log::log_Printf(sVar7,v); + return; + } + if ((local_90.Question.len == 1) && ((local_90.Question.array)->Qtype == 0xc)) { + local_128 = prVar4; + pvStack_120 = (unsafe_Pointer)uVar5; + pvStack_120 = runtime::runtime_convTstring((local_90.Question.array)->Name); + local_128 = &string___String_type; + format.len = 0xf; + format.str = "%s PTR aioCloud"; + a.len = 1; + a.array = (interface___ *)&local_128; + a.cap = 1; + sVar7 = fmt::fmt_Sprintf(format,a); + github.com/miekg/dns::github_com_miekg_dns_NewRR(sVar7.str,sVar7.len); + if (extraout_RCX != 0) { + local_128 = *(runtime__type **)(extraout_RCX + 8); + format_00.len = 0x22; + format_00.str = "[tun2socks][adns] NewRR failed: %v"; + v_00.len = 1; + v_00.array = (interface___ *)&local_128; + v_00.cap = 1; + pvStack_120 = (unsafe_Pointer)extraout_RDI; + log::log_Printf(format_00,v_00); + return; + } + local_118.MsgHdr.Id = 0; + local_118.MsgHdr.Response = false; + local_118.MsgHdr._3_5_ = 0; + runtime::runtime_duffzero_239343a62(&local_118.MsgHdr.Opcode); + local_118.MsgHdr.Response = true; + local_118.MsgHdr.Id = local_90.MsgHdr.Id; + local_118.MsgHdr.Opcode = local_90.MsgHdr.Opcode; + if (local_90.MsgHdr.Opcode == 0) { + local_118.MsgHdr.RecursionDesired = local_90.MsgHdr.RecursionDesired; + local_118.MsgHdr.CheckingDisabled = local_90.MsgHdr.CheckingDisabled; + } + local_118.MsgHdr.Rcode = 0; + if (0 < local_90.Question.len) { + _Var8 = runtime::runtime_makeslice + (&github.com/miekg/dns::github_com_miekg_dns_Question___Struct_type.typ,1,1) + ; + local_118.Question.array = _Var8.array; + local_118.Question.len = 1; + local_118.Question.cap = 1; + if (local_90.Question.len == 0) { + // WARNING: Subroutine does not return + runtime::runtime_panicIndex(0,_Var8.len); + } + pcVar3 = ((local_90.Question.array)->Name).str; + uVar1 = (local_90.Question.array)->Qtype; + uVar2 = (local_90.Question.array)->Qclass; + ((local_118.Question.array)->Name).len = ((local_90.Question.array)->Name).len; + (local_118.Question.array)->Qtype = uVar1; + (local_118.Question.array)->Qclass = uVar2; + ((local_118.Question.array)->Name).str = pcVar3; + } + if ((uint)local_118.Answer.cap < local_118.Answer.len + 1U) { + _Var9 = runtime::runtime_growslice + (&github.com/miekg/dns::github_com_miekg_dns_RR___Interface_type.typ, + in_stack_fffffffffffffe80,(int)local_118.Answer.array); + local_118.Answer.cap = _Var9.cap; + local_118.Answer.len = _Var9.len; + local_118.Answer.array = _Var9.array; + } + local_118.Answer.array[local_118.Answer.len].tab = extraout_RAX; + local_118.Answer.array[local_118.Answer.len].data = extraout_RBX; + local_118.Answer.len = local_118.Answer.len + 1; + github.com/miekg/dns::github_com_miekg_dns___Msg__PackBuffer(&local_118); + if (extraout_RDI_00 == 0) { + if (iStack0000000000000008 != 0) { + (**(code **)(iStack0000000000000008 + 0x30)) + (uStack0000000000000010,extraout_RAX_00,extraout_RBX_00,extraout_RCX_00,param_6); + } + return; + } + local_128 = *(runtime__type **)(extraout_RDI_00 + 8); + format_01.len = 0x29; + format_01.str = "[tun2socks][adns] Failed to pack data: %v"; + v_01.len = 1; + v_01.array = (interface___ *)&local_128; + v_01.cap = 1; + pvStack_120 = (unsafe_Pointer)extraout_RSI; + log::log_Printf(format_01,v_01); + return; + } + self = (github_com_miekg_dns_Msg *) + github.com/miekg/dns::github_com_miekg_dns___Client__Exchange(&PTR_s_tcp_239542080); + if (extraout_RCX_01 != 0) { + local_128 = *(runtime__type **)(extraout_RCX_01 + 8); + format_02.len = 0x2b; + format_02.str = "[tun2socks][adns] DNS resolution failed: %v"; + v_02.len = 1; + v_02.array = (interface___ *)&local_128; + v_02.cap = 1; + pvStack_120 = (unsafe_Pointer)extraout_RDI_01; + log::log_Printf(format_02,v_02); + return; + } + github.com/miekg/dns::github_com_miekg_dns___Msg__PackBuffer(self); + if (extraout_RDI_02 == 0) { + if (iStack0000000000000008 != 0) { + (**(code **)(iStack0000000000000008 + 0x30)) + (uStack0000000000000010,extraout_RAX_01,extraout_RBX_01,extraout_RCX_02,param_6); + } + return; + } + local_128 = *(runtime__type **)(extraout_RDI_02 + 8); + format_03.len = 0x29; + format_03.str = "[tun2socks][adns] Failed to pack data: %v"; + v_03.len = 1; + v_03.array = (interface___ *)&local_128; + v_03.cap = 1; + pvStack_120 = (unsafe_Pointer)extraout_RSI_00; + log::log_Printf(format_03,v_03); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.main.c b/Other/tun2socks/recovered/decompiled/main.main.c new file mode 100644 index 0000000..5a75124 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.main.c @@ -0,0 +1,12 @@ +// Ghidra 12.1.4 decompile of main.main @ 2394f1480 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739c18 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:305 +// Golang stacktrace signature: func main.main() ??? + +void main::main_main(void) + +{ + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.newRanger.c b/Other/tun2socks/recovered/decompiled/main.newRanger.c new file mode 100644 index 0000000..6dc670e --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.newRanger.c @@ -0,0 +1,123 @@ +// Ghidra 12.1.4 decompile of main.newRanger @ 2394f0fe0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739b70 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:272 +// Golang stacktrace signature: func main.newRanger() ??? + +undefined8 main::main_newRanger(void) + +{ + char cVar1; + github_com_yl2chen_cidranger_basicRangerEntry *pgVar2; + net_IPNet *pnVar3; + undefined1 auVar4 [16]; + string format; + string sVar5; + string format_00; + string format_01; + multireturn_os_File___error_ mVar6; + multireturn_net_IP_net_IPNet___error_ mVar7; + __interface___ v; + __interface___ v_00; + __interface___ v_01; + code *local_e0; + os_File *poStack_d8; + runtime__type *local_d0; + unsafe_Pointer pvStack_c8; + uint8 *local_c0; + int iStack_b8; + int local_b0; + uint8 *puStack_a8; + int local_a0; + int iStack_98; + runtime_itab *local_90; + os_File *local_88; + undefined **local_80; + undefined8 local_78; + uint8 *local_70; + int local_68; + code **local_10; + local_10 = (code **)0x0; + if ((DAT_23953cde8 == 8) && (*(int *)PTR_DAT_23953cde0 == 0x64656c6261736964)) { + DAT_239743c08 = 0; + DAT_239743c00 = 0; + return 1; + } + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + mVar6 = os::os_OpenFile(sVar5,0,0); + local_88 = mVar6.~r0; + if (mVar6.~r1.tab != (error_itab *)0x0) { + local_d0 = (mVar6.~r1.tab)->_type; + format.len = 0x22; + format.str = "[tun2socks][newRanger][os.Open] %v"; + v.len = 1; + v.array = (interface___ *)&local_d0; + v.cap = 1; + pvStack_c8 = mVar6.~r1.data; + log::log_Printf(format,v); + return 0; + } + local_e0 = main_newRanger_dwrap_3; + local_10 = &local_e0; + poStack_d8 = local_88; + auVar4 = github.com/yl2chen/cidranger::github_com_yl2chen_cidranger_newVersionedRanger + (&PTR_github_com_yl2chen_cidranger_newPrefixTree_2395aebb0); + DAT_239743c08 = auVar4._8_8_; + DAT_239743c00 = auVar4._0_8_; + runtime::runtime_duffzero_239343a62(&local_90); + local_90 = &os::_os_File__implements__io_Reader__itab; + local_80 = &PTR_bufio_ScanLines_2395ae7b8; + local_78 = 0x10000; + while (cVar1 = bufio::bufio___Scanner__Scan(&local_90), cVar1 != '\0') { + sVar5 = runtime::runtime_slicebytetostring((runtime_tmpBuf *)0x0,local_70,local_68); + sVar5 = strings::strings_TrimSpace(sVar5); + mVar7 = net::net_ParseCIDR(sVar5); + pnVar3 = mVar7.~r1; + if (mVar7.~r2.tab == (error_itab *)0x0) { + local_c0 = (pnVar3->IP).array; + iStack_b8 = (pnVar3->IP).len; + local_b0 = (pnVar3->IP).cap; + puStack_a8 = (pnVar3->Mask).array; + local_a0 = (pnVar3->Mask).len; + iStack_98 = (pnVar3->Mask).cap; + pgVar2 = runtime::runtime_newobject + (&github.com/yl2chen/cidranger:: + github_com_yl2chen_cidranger_basicRangerEntry___Struct_type.typ); + (pgVar2->ipNet).IP.array = local_c0; + (pgVar2->ipNet).IP.len = iStack_b8; + (pgVar2->ipNet).IP.cap = local_b0; + (pgVar2->ipNet).Mask.array = puStack_a8; + (pgVar2->ipNet).Mask.len = local_a0; + (pgVar2->ipNet).Mask.cap = iStack_98; + auVar4 = (**(code **)(DAT_239743c00 + 0x30)) + (DAT_239743c08, + &github.com/yl2chen/cidranger:: + _github_com_yl2chen_cidranger_basicRangerEntry__implements__cidranger_RangerEntry__itab + ,pgVar2); + if (auVar4._0_8_ != 0) { + local_d0 = *(runtime__type **)(auVar4._0_8_ + 8); + format_01.len = 0x28; + format_01.str = "[tun2socks][newRanger][ranger.Insert] %v"; + v_01.len = 1; + v_01.array = (interface___ *)&local_d0; + v_01.cap = 1; + pvStack_c8 = auVar4._8_8_; + log::log_Printf(format_01,v_01); + } + } + else { + local_d0 = (mVar7.~r2.tab)->_type; + format_00.len = 0x28; + format_00.str = "[tun2socks][newRanger][net.ParseCIDR] %v"; + v_00.len = 1; + v_00.array = (interface___ *)&local_d0; + v_00.cap = 1; + pvStack_c8 = mVar7.~r2.data; + log::log_Printf(format_00,v_00); + } + } + (**local_10)(); + return 1; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.newRanger_dwrap_3.c b/Other/tun2socks/recovered/decompiled/main.newRanger_dwrap_3.c new file mode 100644 index 0000000..9eb9515 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.newRanger_dwrap_3.c @@ -0,0 +1,20 @@ +// Ghidra 12.1.4 decompile of main.newRanger·dwrap·3 @ 2394f1420 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739bd0 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:283 +// Golang stacktrace signature: func main.newRanger·dwrap·3() ??? + +error main::main_newRanger_dwrap_3(void) + +{ + int unaff_RDX; + error eVar1; + undefined1 auStack_10 [8]; + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &stack0x00000008)) + { + (CURRENT_G._panic)->argp = auStack_10; + } + eVar1 = os::os___File__Close(*(os_File **)(unaff_RDX + 8)); + return eVar1; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.tun_dial.c b/Other/tun2socks/recovered/decompiled/main.tun_dial.c new file mode 100644 index 0000000..f0d7291 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.tun_dial.c @@ -0,0 +1,347 @@ +// Ghidra 12.1.4 decompile of main.tun_dial @ 2394efe20 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// WARNING: Globals starting with '_' overlap smaller symbols at the same address +// Golang function info: {@address 239739918 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:73 +// Golang stacktrace signature: func main.tun_dial() ??? + +undefined8 main::main_tun_dial(int param_1,uint8 *param_2) + +{ + string sVar1; + string sVar2; + int iVar3; + string *psVar4; + string sVar5; + string sVar6; + string sVar7; + interface___ e; + __string _Var8; + multireturn_int_error_ mVar9; + string sep; + if (param_1 < 0xc) { + if (param_1 < 6) { + if (param_1 < 3) { + if (param_1 == 0) { + sVar7 = runtime::runtime_gostring(param_2); + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else if (param_1 == 1) { + sVar5 = runtime::runtime_gostring(param_2); + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + iVar3 = DAT_23950e178; + } + else { + if (param_1 != 2) { + return 0; + } + sVar5 = runtime::runtime_gostring(param_2); + sep.len = 3; + sep.str = "://"; + _Var8 = strings::strings_genSplit(sVar5,sep,0,2); + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar2.len = DAT_23953cdd8; + sVar2.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + sVar1.len = DAT_23953cde8; + sVar1.str = PTR_DAT_23953cde0; + psVar4 = _Var8.array; + if (_Var8.len == 2) { + sVar6 = psVar4[1]; + iVar3 = DAT_23950e178; + if (((psVar4->len == 3) && (*(short *)psVar4->str == 0x6c74)) && + ((char)*(short *)((int)psVar4->str + 2) == 's')) { + _DAT_239542088 = 7; + PTR_s_tcp_239542080 = &DAT_23959b1c9; + sVar5 = sVar1; + sVar7 = sVar2; + sVar6 = psVar4[1]; + } + else { + _DAT_239542088 = 3; + PTR_s_tcp_239542080 = s_tcp_23959a6fe; + } + } + else { + sVar6 = runtime::runtime_gostring(param_2); + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + } + } + else if (param_1 == 3) { + sVar5 = runtime::runtime_gostring(param_2); + mVar9 = strconv::strconv_Atoi(sVar5); + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = mVar9.~r0; + if (mVar9.~r1.tab != (error_itab *)0x0) { + e.data = mVar9.~r1.data; + e.tab = (interface____itab *)(mVar9.~r1.tab)->_type; + // WARNING: Subroutine does not return + runtime::runtime_gopanic(e); + } + } + else if (param_1 == 4) { + DAT_239743008 = + runtime::runtime_newobject + (&rixcloud.moe/aiocloud/tun2socks/structs:: + rixcloud_moe_aiocloud_tun2socks_structs_ServerInfo___Struct_type.typ); + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743008->Type = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + } + else if (param_1 < 9) { + if (param_1 == 6) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743008->Hostname = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else if (param_1 == 7) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743008->Username = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743008->Password = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + } + else if (param_1 == 9) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743008->Method = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else if (param_1 == 10) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743008->Prot = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743008->ProtParam = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + } + else if (param_1 < 0x12) { + if (param_1 < 0xf) { + if (param_1 == 0xc) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743008->OBFS = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else if (param_1 == 0xd) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743008->OBFSParam = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else { + DAT_239743010 = + runtime::runtime_newobject + (&rixcloud.moe/aiocloud/tun2socks/structs:: + rixcloud_moe_aiocloud_tun2socks_structs_ServerInfo___Struct_type.typ); + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + } + else if (param_1 == 0xf) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743010->Type = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else if (param_1 == 0x10) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743010->Hostname = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743010->Username = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + } + else if (param_1 < 0x15) { + if (param_1 == 0x12) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743010->Password = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else if (param_1 == 0x13) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743010->Method = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743010->Prot = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + } + else if (param_1 == 0x15) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743010->ProtParam = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else if (param_1 == 0x16) { + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743010->OBFS = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + else { + if (param_1 != 0x17) { + return 0; + } + sVar5 = runtime::runtime_gostring(param_2); + DAT_239743010->OBFSParam = sVar5; + sVar6.len = DAT_23953ce18; + sVar6.str = PTR_DAT_23953ce10; + sVar7.len = DAT_23953cdd8; + sVar7.str = PTR_DAT_23953cdd0; + sVar5.len = DAT_23953cde8; + sVar5.str = PTR_DAT_23953cde0; + iVar3 = DAT_23950e178; + } + DAT_23950e178 = iVar3; + DAT_23953ce18 = sVar6.len; + PTR_DAT_23953ce10 = sVar6.str; + DAT_23953cdd8 = sVar7.len; + PTR_DAT_23953cdd0 = sVar7.str; + DAT_23953cde8 = sVar5.len; + PTR_DAT_23953cde0 = sVar5.str; + return 1; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.tun_free.c b/Other/tun2socks/recovered/decompiled/main.tun_free.c new file mode 100644 index 0000000..78ae59e --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.tun_free.c @@ -0,0 +1,29 @@ +// Ghidra 12.1.4 decompile of main.tun_free @ 2394f0c00 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 2397399d8 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:227 +// Golang stacktrace signature: func main.tun_free() ??? + +undefined8 main::main_tun_free(void) + +{ + DAT_239798e8b = 0; + if (DAT_239743bf0 != 0) { + (**(code **)(DAT_239743bf0 + 0x18))(DAT_239743bf8); + } + if (DAT_239743be0 != 0) { + (**(code **)(DAT_239743be0 + 0x18))(DAT_239743be8); + } + DAT_239743bf0 = 0; + DAT_239743bf8 = 0; + DAT_239743be0 = 0; + DAT_239743be8 = 0; + DAT_239743c00 = 0; + DAT_239743c08 = 0; + DAT_239743c10 = 0; + DAT_239743c18 = 0; + DAT_239743c20 = 0; + DAT_239743c28 = 0; + return 1; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.tun_getDL.c b/Other/tun2socks/recovered/decompiled/main.tun_getDL.c new file mode 100644 index 0000000..1229b59 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.tun_getDL.c @@ -0,0 +1,33 @@ +// Ghidra 12.1.4 decompile of main.tun_getDL @ 2394f0ea0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// WARNING: Restarted to delay deadcode elimination for space: stack +// Golang function info: {@address 239739ac8 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:265 +// Golang stacktrace signature: func main.tun_getDL() ??? + +undefined8 main::main_tun_getDL(void) + +{ + undefined8 uVar1; + bool bVar2; + code *local_20; + sdword *psStack_18; + code **local_10; + local_10 = (code **)0x0; + LOCK(); + bVar2 = DAT_239798f58 == 0; + if (bVar2) { + DAT_239798f58 = 1; + } + UNLOCK(); + if (!bVar2) { + sync::sync___Mutex__lockSlow((sync_Mutex *)&DAT_239798f58); + } + uVar1 = DAT_239798f50; + local_20 = main_tun_getDL_dwrap_2; + psStack_18 = &DAT_239798f58; + local_10 = &local_20; + main_tun_getDL_dwrap_2(main_tun_getDL_dwrap_2); + return uVar1; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.tun_getDL_dwrap_2.c b/Other/tun2socks/recovered/decompiled/main.tun_getDL_dwrap_2.c new file mode 100644 index 0000000..ebc17fc --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.tun_getDL_dwrap_2.c @@ -0,0 +1,19 @@ +// Ghidra 12.1.4 decompile of main.tun_getDL·dwrap·2 @ 2394f0f80 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739b28 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:267 +// Golang stacktrace signature: func main.tun_getDL·dwrap·2() ??? + +void main::main_tun_getDL_dwrap_2(void) + +{ + int unaff_RDX; + undefined1 auStack_10 [8]; + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &stack0x00000008)) + { + (CURRENT_G._panic)->argp = auStack_10; + } + sync::sync___Mutex__Unlock(*(sync_Mutex **)(unaff_RDX + 8)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.tun_getUP.c b/Other/tun2socks/recovered/decompiled/main.tun_getUP.c new file mode 100644 index 0000000..22999db --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.tun_getUP.c @@ -0,0 +1,33 @@ +// Ghidra 12.1.4 decompile of main.tun_getUP @ 2394f0d60 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// WARNING: Restarted to delay deadcode elimination for space: stack +// Golang function info: {@address 239739a20 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:257 +// Golang stacktrace signature: func main.tun_getUP() ??? + +undefined8 main::main_tun_getUP(void) + +{ + undefined8 uVar1; + bool bVar2; + code *local_20; + sdword *psStack_18; + code **local_10; + local_10 = (code **)0x0; + LOCK(); + bVar2 = DAT_239798f68 == 0; + if (bVar2) { + DAT_239798f68 = 1; + } + UNLOCK(); + if (!bVar2) { + sync::sync___Mutex__lockSlow((sync_Mutex *)&DAT_239798f68); + } + uVar1 = DAT_239798f60; + local_20 = main_tun_getUP_dwrap_1; + psStack_18 = &DAT_239798f68; + local_10 = &local_20; + main_tun_getUP_dwrap_1(main_tun_getUP_dwrap_1); + return uVar1; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.tun_getUP_dwrap_1.c b/Other/tun2socks/recovered/decompiled/main.tun_getUP_dwrap_1.c new file mode 100644 index 0000000..4231c08 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.tun_getUP_dwrap_1.c @@ -0,0 +1,19 @@ +// Ghidra 12.1.4 decompile of main.tun_getUP·dwrap·1 @ 2394f0e40 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739a80 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:259 +// Golang stacktrace signature: func main.tun_getUP·dwrap·1() ??? + +void main::main_tun_getUP_dwrap_1(void) + +{ + int unaff_RDX; + undefined1 auStack_10 [8]; + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &stack0x00000008)) + { + (CURRENT_G._panic)->argp = auStack_10; + } + sync::sync___Mutex__Unlock(*(sync_Mutex **)(unaff_RDX + 8)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.tun_init.c b/Other/tun2socks/recovered/decompiled/main.tun_init.c new file mode 100644 index 0000000..bbe8ff7 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.tun_init.c @@ -0,0 +1,211 @@ +// Ghidra 12.1.4 decompile of main.tun_init @ 2394f0540 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739980 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:145 +// Golang stacktrace signature: func main.tun_init() ??? + +undefined8 main::main_tun_init(void) + +{ + sdword *psVar1; + int iVar2; + int iVar3; + github_com_yl2chen_cidranger_Ranger_itab *pgVar4; + char cVar5; + undefined8 extraout_RAX; + int extraout_RCX; + undefined8 extraout_RBX; + undefined8 extraout_RDI; + undefined1 auVar6 [16]; + string format; + string format_00; + string s; + string format_01; + net_IP nVar7; + __interface___ v; + __interface___ v_00; + __interface___ v_01; + undefined8 local_d8; + undefined8 uStack_d0; + undefined4 local_88; + undefined4 uStack_84; + undefined4 uStack_80; + undefined4 uStack_7c; + undefined4 local_78; + undefined4 uStack_74; + undefined4 uStack_70; + undefined4 uStack_6c; + rixcloud_moe_aiocloud_tun2socks_structs_ServerInfo *local_68; + rixcloud_moe_aiocloud_tun2socks_structs_ServerInfo *local_60; + unsafe_Pointer local_58; + unsafe_Pointer local_50; + char *local_48; + net_TCPAddr *local_40; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *local_38; + runtime_hmap *local_30; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_tcpHandler *local_28; + uint8 *local_20; + undefined8 local_18; + undefined8 uStack_10; + DAT_239798f60 = 0; + DAT_239798f50 = 0; + cVar5 = main_newRanger(); + if (cVar5 == '\0') { + return 0; + } + auVar6 = golang.org/x/sys/windows::golang_org_x_sys_windows_GUIDFromString + ("{14EA48E9-69FA-409F-8752-22563978E802}",0x26); + uStack_10 = auVar6._8_8_; + local_78 = (undefined4)local_d8; + uStack_74 = (undefined4)((uint)local_d8 >> 0x20); + uStack_70 = (undefined4)uStack_d0; + uStack_6c = (undefined4)((uint)uStack_d0 >> 0x20); + local_88 = local_78; + uStack_84 = uStack_74; + uStack_80 = uStack_70; + uStack_7c = uStack_6c; + if (auVar6._0_8_ != 0) { + local_18 = *(undefined8 *)(auVar6._0_8_ + 8); + format.len = 0x2e; + format.str = "[tun2socks][newTUN][windows.GUIDFromString] %v"; + v.len = 1; + v.array = (interface___ *)&local_18; + v.cap = 1; + log::log_Printf(format,v); + return 0; + } + golang.zx2c4.com/wireguard/tun::golang_zx2c4_com_wireguard_tun_CreateTUNWithRequestedGUID + ("aioCloud",8,&local_88,DAT_23950e178); + DAT_239743be0 = extraout_RAX; + DAT_239743be8 = extraout_RBX; + if (extraout_RCX != 0) { + local_18 = *(undefined8 *)(extraout_RCX + 8); + format_00.len = 0x25; + format_00.str = "[tun2socks][newTUN][tun.CreateTUN] %v"; + v_00.len = 1; + v_00.array = (interface___ *)&local_18; + v_00.cap = 1; + uStack_10 = extraout_RDI; + log::log_Printf(format_00,v_00); + return 0; + } + s.len = DAT_23953cdd8; + s.str = PTR_DAT_23953cdd0; + nVar7 = net::net_ParseIP(s); + local_20 = nVar7.array; + local_60 = DAT_239743008; + local_40 = runtime::runtime_newobject(&net::net_TCPAddr___Struct_type.typ); + (local_40->IP).len = nVar7.len; + (local_40->IP).cap = nVar7.cap; + (local_40->IP).array = local_20; + pgVar4 = DAT_239743c00; + local_50 = DAT_239743c08; + psVar1 = (sdword *)(local_60->Type).str; + iVar2 = (local_60->Type).len; + if (iVar2 == 2) { + if ((short)*psVar1 != 0x3553) goto LAB_2394f0874; +code_r0x0002394f07aa: + local_28 = runtime::runtime_newobject + (&rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks_tcpHandler___Struct_type. + typ); + local_28->t = local_60; + DAT_239743c18 = + runtime::runtime_newobject + (&rixcloud.moe/aiocloud/tun2socks/proxies:: + rixcloud_moe_aiocloud_tun2socks_proxies_tcpHandler___Struct_type.typ); + (DAT_239743c18->h).tab = + (rixcloud_moe_aiocloud_tun2socks_core_TCPConnHandler_itab *) + &rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + _rixcloud_moe_aiocloud_tun2socks_proxies_socks_tcpHandler__implements__core_TCPConnHandler__itab + ; + (DAT_239743c18->h).data = local_28; + DAT_239743c18->binder = local_40; + (DAT_239743c18->ranger).tab = pgVar4; + (DAT_239743c18->ranger).data = local_50; + DAT_239743c10 = + &rixcloud.moe/aiocloud/tun2socks/proxies:: + _rixcloud_moe_aiocloud_tun2socks_proxies_tcpHandler__implements__core_TCPConnHandler__itab + ; + } + else { + if (iVar2 != 5) { + if (((iVar2 != 6) || (*psVar1 != 0x6b636f53)) || ((short)psVar1[1] != 0x3573)) + goto LAB_2394f0874; + goto code_r0x0002394f07aa; + } + if ((*psVar1 == 0x6b636f53) && ((char)psVar1[1] == 's')) goto code_r0x0002394f07aa; +LAB_2394f0874: + DAT_239743c18 = (rixcloud_moe_aiocloud_tun2socks_proxies_tcpHandler *)0x0; + DAT_239743c10 = (runtime_itab *)0x0; + } + pgVar4 = DAT_239743c00; + iVar3 = DAT_23953cdd8; + local_68 = DAT_239743010; + local_48 = PTR_DAT_23953cdd0; + local_58 = DAT_239743c08; + psVar1 = (sdword *)(DAT_239743010->Type).str; + iVar2 = (DAT_239743010->Type).len; + if (iVar2 == 2) { + if ((short)*psVar1 == 0x3553) goto code_r0x0002394f094c; + } + else if (iVar2 == 5) { + if ((*psVar1 == 0x6b636f53) && ((char)psVar1[1] == 's')) { +code_r0x0002394f094c: + local_30 = runtime::runtime_makemap_small(); + local_38 = runtime::runtime_newobject + (&rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler___Struct_type. + typ); + local_38->t = local_68; + local_38->conns = local_30; + DAT_239743c28 = + runtime::runtime_newobject + (&rixcloud.moe/aiocloud/tun2socks/proxies:: + rixcloud_moe_aiocloud_tun2socks_proxies_udpHandler___Struct_type.typ); + (DAT_239743c28->h).tab = + (rixcloud_moe_aiocloud_tun2socks_core_UDPConnHandler_itab *) + &rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + _rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler__implements__core_UDPConnHandler__itab + ; + (DAT_239743c28->h).data = local_38; + (DAT_239743c28->binder).len = iVar3; + (DAT_239743c28->binder).str = local_48; + (DAT_239743c28->ranger).tab = pgVar4; + (DAT_239743c28->ranger).data = local_58; + DAT_239743c20 = + &rixcloud.moe/aiocloud/tun2socks/proxies:: + _rixcloud_moe_aiocloud_tun2socks_proxies_udpHandler__implements__core_UDPConnHandler__itab + ; + goto LAB_2394f0a5a; + } + } + else if (((iVar2 == 6) && (*psVar1 == 0x6b636f53)) && ((short)psVar1[1] == 0x3573)) + goto code_r0x0002394f094c; + DAT_239743c20 = (runtime_itab *)0x0; + DAT_239743c28 = (rixcloud_moe_aiocloud_tun2socks_proxies_udpHandler *)0x0; +LAB_2394f0a5a: + if ((DAT_239743c10 != (runtime_itab *)0x0) && (DAT_239743c20 != (runtime_itab *)0x0)) { + auVar6 = rixcloud.moe/aiocloud/tun2socks/core::rixcloud_moe_aiocloud_tun2socks_core_NewLWIPStack + (); + DAT_239743bf8 = auVar6._8_8_; + DAT_239743bf0 = auVar6._0_8_; + DAT_239743060 = &PTR_main_tun_init_func1_2395aec40; + rixcloud.moe/aiocloud/tun2socks/core::rixcloud_moe_aiocloud_tun2socks_core__Cfunc_set_output(); + DAT_239743dc0 = DAT_239743c10; + DAT_239743dc8 = DAT_239743c18; + DAT_239743dd0 = DAT_239743c20; + DAT_239743dd8 = DAT_239743c28; + DAT_239798e8b = 1; + runtime::runtime_newproc(0,(runtime_funcval *)&PTR_main_tun_init_func2_2395aec48); + return 1; + } + format_01.len = 0x2c; + format_01.str = "[tun2socks][proxies.NewHandler] Unknown Type"; + v_01.cap = 0; + v_01.array = (interface___ *)0x0; + v_01.len = 0; + log::log_Printf(format_01,v_01); + return 0; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.tun_init.func1.c b/Other/tun2socks/recovered/decompiled/main.tun_init.func1.c new file mode 100644 index 0000000..0015c82 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.tun_init.func1.c @@ -0,0 +1,50 @@ +// Ghidra 12.1.4 decompile of main.tun_init.func1 @ 2394f14a0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739c58 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:173 +// Golang stacktrace signature: func main.tun_init.func1() ??? +// Golang signature [params_missing, return_info_missing, closure]: func(.context, ???) ??? + +int main::main_tun_init_func1(_closure *_context) + +{ + sdword sVar1; + undefined8 in_RAX; + int iVar2; + undefined8 in_RCX; + int in_RBX; + bool bVar3; + undefined8 uStack0000000000000008; + int iStack0000000000000010; + undefined8 uStack0000000000000018; + + uStack0000000000000008 = in_RAX; + uStack0000000000000018 = in_RCX; + iStack0000000000000010 = in_RBX; + if (DAT_239798e8b == '\0') { + return iStack0000000000000010; + } + LOCK(); + bVar3 = DAT_239798f58 == 0; + if (bVar3) { + DAT_239798f58 = 1; + } + UNLOCK(); + if (!bVar3) { + sync::sync___Mutex__lockSlow((sync_Mutex *)&DAT_239798f58); + } + DAT_239798f50 = DAT_239798f50 + iStack0000000000000010; + LOCK(); + sVar1 = DAT_239798f58 + -1; + UNLOCK(); + bVar3 = DAT_239798f58 != 1; + DAT_239798f58 = sVar1; + if (bVar3) { + sync::sync___Mutex__unlockSlow((sync_Mutex *)&DAT_239798f58); + } + iVar2 = (**(code **)(DAT_239743be0 + 0x50)) + (DAT_239743be8,uStack0000000000000008,iStack0000000000000010, + uStack0000000000000018,0); + return iVar2; +} + diff --git a/Other/tun2socks/recovered/decompiled/main.tun_init.func2.c b/Other/tun2socks/recovered/decompiled/main.tun_init.func2.c new file mode 100644 index 0000000..4b6f60c --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/main.tun_init.func2.c @@ -0,0 +1,118 @@ +// Ghidra 12.1.4 decompile of main.tun_init.func2 @ 2394f15c0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739cc0 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/main.go:189 +// Golang stacktrace signature: func main.tun_init.func2() ??? +// Golang signature [params_missing, return_info_missing, closure]: func(.context, ???) ??? + +void main::main_tun_init_func2(_closure *_context) + +{ + dword dVar1; + uint uVar2; + bool bVar3; + byte *y; + uint extraout_RAX; + uint uVar4; + uint extraout_RAX_00; + unsafe_Pointer x; + undefined8 extraout_RCX; + sdword sVar5; + runtime_itab *tab; + int extraout_RBX; + byte bVar6; + bool bVar7; + undefined1 auVar8 [16]; + string format; + string format_00; + __uint8 _Var9; + __interface___ v; + __interface___ v_00; + __interface___ v_01; + runtime__type *local_18; + undefined **ppuStack_10; + _Var9 = runtime::runtime_makeslice(&uint8___Uint8_type,DAT_23950e178,DAT_23950e178); + uVar2 = DAT_23950e178; + y = _Var9.array; + do { + do { + do { + if (DAT_239798e8b == '\0') { + return; + } + (**(code **)(DAT_239743be0 + 0x48))(DAT_239743be8,y,uVar2,uVar2,0); + if (tab != (runtime_itab *)0x0) { + if ((DAT_239743cf0 == tab) && + (bVar3 = runtime::runtime_ifaceeq(tab,x,DAT_239743cf8), bVar3)) { + local_18 = &string___String_type; + ppuStack_10 = &PTR_DAT_2395f0e70; + v.len = 1; + v.array = (interface___ *)&local_18; + v.cap = 1; + log::log_Println(v); + return; + } + local_18 = (runtime__type *)0x0; + if (tab != (runtime_itab *)0x0) { + local_18 = tab->_type; + } + format_00.len = 0x1b; + format_00.str = "[tun2socks][device.Read] %v"; + v_01.len = 1; + v_01.array = (interface___ *)&local_18; + v_01.cap = 1; + ppuStack_10 = x; + log::log_Printf(format_00,v_01); + return; + } + } while ((int)DAT_23950e178 < (int)extraout_RAX); + uVar4 = 0; + LOCK(); + bVar7 = DAT_239798f68 == 0; + if (bVar7) { + DAT_239798f68 = 1; + } + else { + uVar4 = (uint)DAT_239798f68; + } + UNLOCK(); + if (!bVar7) { + sync::sync___Mutex__lockSlow((sync_Mutex *)&DAT_239798f68); + uVar4 = extraout_RAX_00; + } + DAT_239798f60 = DAT_239798f60 + extraout_RAX; + LOCK(); + dVar1 = DAT_239798f68 - 1; + UNLOCK(); + sVar5 = DAT_239798f68 - 1; + auVar8._8_4_ = sVar5; + auVar8._0_8_ = uVar4; + auVar8._12_4_ = 0; + DAT_239798f68 = dVar1; + if (sVar5 != 0) { + auVar8 = sync::sync___Mutex__unlockSlow((sync_Mutex *)&DAT_239798f68); + } + if (uVar2 == 0) { + // WARNING: Subroutine does not return + runtime::runtime_panicIndex(0,auVar8._8_8_); + } + bVar6 = *y >> 4; + } while ((bVar6 != 4) && (bVar6 != 6)); + if (uVar2 < extraout_RAX) { + // WARNING: Subroutine does not return + runtime::runtime_panicSliceAcap(auVar8._0_8_,(int)y); + } + (**(code **)(DAT_239743bf0 + 0x28)) + (DAT_239743bf8,y,extraout_RAX,uVar2,*(code **)(DAT_239743bf0 + 0x28),bVar6,1); + } while (extraout_RBX == 0); + local_18 = *(runtime__type **)(extraout_RBX + 8); + format.len = 0x1a; + format.str = "[tun2socks][lwip.Write] %v"; + v_00.len = 1; + v_00.array = (interface___ *)&local_18; + v_00.cap = 1; + ppuStack_10 = (undefined **)extraout_RCX; + log::log_Printf(format,v_00); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies._tcpHandler_.Handle.c b/Other/tun2socks/recovered/decompiled/proxies._tcpHandler_.Handle.c new file mode 100644 index 0000000..42d1627 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies._tcpHandler_.Handle.c @@ -0,0 +1,3 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies.(*tcpHandler).Handle @ 2394ef700 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +{'program': 'tun2socks.dll', 'name': 'rixcloud.moe/aiocloud/tun2socks/proxies.(*tcpHandler).Handle', 'size': 709, 'address': '2394ef700', 'decompile_failed': True, 'decompile_error': 'Low-level Error: Joined varnode does not match size of record', 'revision': {'token': '0:7d0e198c:2531234', 'epoch': '7d0e198c', 'modification_number': 2531234, 'saved_time': 0, 'unsaved_changes': True, 'decompiled': False}} \ No newline at end of file diff --git a/Other/tun2socks/recovered/decompiled/proxies._tcpHandler_.Handle_dwrap_1.c b/Other/tun2socks/recovered/decompiled/proxies._tcpHandler_.Handle_dwrap_1.c new file mode 100644 index 0000000..5febcfe --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies._tcpHandler_.Handle_dwrap_1.c @@ -0,0 +1,30 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies.(*tcpHandler).Handle·dwrap·1 @ 2394ef9e0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 2397396e8 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/tcp.go:39 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies.(*tcpHandler).Handle·dwrap·1() ??? +// Golang signature [recv_artificial, params_missing, return_info_missing]: func (*tcpHandler) +// Handle.dwrap.1(???) ??? +// Golang method in type *tcpHandler + +void rixcloud.moe/aiocloud/tun2socks/proxies:: + rixcloud_moe_aiocloud_tun2socks_proxies___tcpHandler__Handle_dwrap_1(void *self) + +{ + int unaff_RDX; + void *self_spill; + undefined1 auStack_28 [32]; + + while (&stack0x00000000 <= CURRENT_G.stackguard0) { + self = (void *)runtime::runtime_morestack(self); + } + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_28; + } + rixcloud.moe/aiocloud/tun2socks/tools::rixcloud_moe_aiocloud_tun2socks_tools_CopyBuffer + (*(undefined8 *)(unaff_RDX + 8),*(undefined8 *)(unaff_RDX + 0x10), + *(undefined8 *)(unaff_RDX + 0x18),*(undefined8 *)(unaff_RDX + 0x20)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies._udpHandler_.Connect.c b/Other/tun2socks/recovered/decompiled/proxies._udpHandler_.Connect.c new file mode 100644 index 0000000..e0efd61 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies._udpHandler_.Connect.c @@ -0,0 +1,25 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies.(*udpHandler).Connect @ 2394efa40 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739730 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/udp.go:18 +// Golang stacktrace signature: func rixcloud.moe/aiocloud/tun2socks/proxies.(*udpHandler).Connect() +// ??? +// Golang signature [from_rtti_method]: func (*udpHandler) Connect(core.UDPConn, *net.UDPAddr) error +// Golang method in type {@address 239567ba0 *proxies.udpHandler} + +error rixcloud.moe/aiocloud/tun2socks/proxies:: + rixcloud_moe_aiocloud_tun2socks_proxies___udpHandler__Connect + (rixcloud_moe_aiocloud_tun2socks_proxies_udpHandler *self, + rixcloud_moe_aiocloud_tun2socks_core_UDPConn param_2,net_UDPAddr *param_3) + +{ + error eVar1; + rixcloud_moe_aiocloud_tun2socks_proxies_udpHandler *self_spill; + rixcloud_moe_aiocloud_tun2socks_core_UDPConn param_2_spill; + net_UDPAddr *param_3_spill; + rixcloud_moe_aiocloud_tun2socks_core_UDPConn in_stack_ffffffffffffffd8; + eVar1 = (*((self->h).tab)->Connect) + ((self->h).data,in_stack_ffffffffffffffd8,(net_UDPAddr *)param_2.tab); + return eVar1; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies._udpHandler_.ReceiveTo.c b/Other/tun2socks/recovered/decompiled/proxies._udpHandler_.ReceiveTo.c new file mode 100644 index 0000000..7867fce --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies._udpHandler_.ReceiveTo.c @@ -0,0 +1,46 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies.(*udpHandler).ReceiveTo @ 2394efac0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739798 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/udp.go:22 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies.(*udpHandler).ReceiveTo() ??? +// Golang signature [from_rtti_method]: func (*udpHandler) ReceiveTo(core.UDPConn, []uint8, +// *net.UDPAddr) error +// Golang method in type {@address 239567ba0 *proxies.udpHandler} + +error rixcloud.moe/aiocloud/tun2socks/proxies:: + rixcloud_moe_aiocloud_tun2socks_proxies___udpHandler__ReceiveTo + (rixcloud_moe_aiocloud_tun2socks_proxies_udpHandler *self, + rixcloud_moe_aiocloud_tun2socks_core_UDPConn param_2,__uint8 param_3, + net_UDPAddr *param_4) + +{ + rixcloud_moe_aiocloud_tun2socks_proxies_struct___F_uintptr___autotmp_5_core_UDPConn___autotmp_6___uint8___autotmp_7__net_UDPAddr__ + *fn; + error eVar1; + rixcloud_moe_aiocloud_tun2socks_proxies_udpHandler *self_spill; + rixcloud_moe_aiocloud_tun2socks_core_UDPConn param_2_spill; + __uint8 param_3_spill; + net_UDPAddr *param_4_spill; + rixcloud_moe_aiocloud_tun2socks_core_UDPConn in_stack_ffffffffffffffa8; + __uint8 in_stack_ffffffffffffffb8; + if (param_4->Port != 0x35) { + eVar1 = (*((self->h).tab)->ReceiveTo) + ((self->h).data,in_stack_ffffffffffffffa8,in_stack_ffffffffffffffb8, + (net_UDPAddr *)param_2.tab); + return eVar1; + } + fn = runtime::runtime_newobject + (&rixcloud_moe_aiocloud_tun2socks_proxies_struct___F_uintptr___autotmp_5_core_UDPConn___autotmp_6___uint8___autotmp_7__net_UDPAddr_____Struct_type + .typ); + fn->_F = (uintptr)rixcloud_moe_aiocloud_tun2socks_proxies___udpHandler__ReceiveTo_dwrap_2; + (fn->_autotmp_5).tab = param_2.tab; + (fn->_autotmp_5).data = param_2.data; + (fn->_autotmp_6).len = param_3.len; + (fn->_autotmp_6).cap = param_3.cap; + (fn->_autotmp_6).array = param_3.array; + fn->_autotmp_7 = param_4; + runtime::runtime_newproc(0,(runtime_funcval *)fn); + return (error)ZEXT816(0); +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies._udpHandler_.ReceiveTo_dwrap_2.c b/Other/tun2socks/recovered/decompiled/proxies._udpHandler_.ReceiveTo_dwrap_2.c new file mode 100644 index 0000000..c59ebe5 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies._udpHandler_.ReceiveTo_dwrap_2.c @@ -0,0 +1,31 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies.(*udpHandler).ReceiveTo·dwrap·2 @ 2394efc40 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739800 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/udp.go:24 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies.(*udpHandler).ReceiveTo·dwrap·2() ??? +// Golang signature [recv_artificial, params_missing, return_info_missing]: func (*udpHandler) +// ReceiveTo.dwrap.2(???) ??? +// Golang method in type *udpHandler + +void rixcloud.moe/aiocloud/tun2socks/proxies:: + rixcloud_moe_aiocloud_tun2socks_proxies___udpHandler__ReceiveTo_dwrap_2(void *self) + +{ + int unaff_RDX; + void *self_spill; + undefined1 auStack_38 [48]; + + while (&stack0x00000000 <= CURRENT_G.stackguard0) { + self = (void *)runtime::runtime_morestack(self); + } + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_38; + } + rixcloud.moe/aiocloud/tun2socks/adns::rixcloud_moe_aiocloud_tun2socks_adns_Handle + (*(undefined8 *)(unaff_RDX + 8),*(undefined8 *)(unaff_RDX + 0x10), + *(undefined8 *)(unaff_RDX + 0x18),*(undefined8 *)(unaff_RDX + 0x20), + *(undefined8 *)(unaff_RDX + 0x28),*(undefined8 *)(unaff_RDX + 0x30)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._tcpHandler_.Handle.c b/Other/tun2socks/recovered/decompiled/proxies_socks._tcpHandler_.Handle.c new file mode 100644 index 0000000..ab47c60 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._tcpHandler_.Handle.c @@ -0,0 +1,145 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*tcpHandler).Handle @ 2394edc40 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739128 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/tcp.go:18 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*tcpHandler).Handle() ??? +// Golang signature [from_rtti_method]: func (*tcpHandler) Handle(net.Conn, *net.TCPAddr) error +// Golang method in type {@address 239563320 *socks.tcpHandler} + +error rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___tcpHandler__Handle + (rixcloud_moe_aiocloud_tun2socks_proxies_socks_tcpHandler *self,net_Conn param_2, + net_TCPAddr *param_3) + +{ + net_Conn_itab *extraout_RAX; + uint8 (*cap) [3]; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_struct___F_uintptr___autotmp_18_net_Conn___autotmp_26_net_Conn__ + *fn; + error_itab *extraout_RCX; + void *self_00; + unsafe_Pointer extraout_RSI; + unsafe_Pointer extraout_RDI; + error_itab *extraout_RDI_00; + error eVar1; + string sVar2; + undefined1 auVar3 [16]; + string format; + io_Reader r; + string format_00; + runtime_iface rVar4; + string format_01; + error eVar5; + __uint8 _Var6; + multireturn_int_error_ mVar7; + runtime_iface i; + __interface___ v; + __interface___ v_00; + __byte buf; + __interface___ v_01; + __interface___ v_02; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_tcpHandler *self_spill; + net_Conn param_2_spill; + net_TCPAddr *param_3_spill; + __uint8 in_stack_ffffffffffffff50; + uint8 *local_30; + net_Conn_itab *local_28; + net_TCPAddr *local_20; + runtime__type *local_18; + unsafe_Pointer pvStack_10; + local_28 = param_2.tab; + local_20 = param_3; + _Var6 = runtime::runtime_makeslice(&uint8___Uint8_type,0x103,0x103); + local_30 = _Var6.array; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_handshake(self->t,local_30,0x103,0x103); + if (extraout_RCX != (error_itab *)0x0) { + local_18 = extraout_RCX->_type; + sVar2.len = 0x25; + sVar2.str = "[tun2socks][TCP][socks][handshake] %v"; + v.len = 1; + v.array = (interface___ *)&local_18; + v.cap = 1; + pvStack_10 = extraout_RDI; + log::log_Printf(sVar2,v); + eVar1.data = extraout_RDI; + eVar1.tab = extraout_RCX; + return eVar1; + } + sVar2 = net::net___TCPAddr__String(local_20); + auVar3 = github.com/aiocloud/shadowsocks/socks::github_com_aiocloud_shadowsocks_socks_ParseAddr + (sVar2.str,sVar2.len); + cap = runtime::runtime_newobject(&_3_uint8___Array_type.typ); + *(uint8 *)((int)cap + 0) = 5; + *(uint8 *)((int)cap + 1) = 1; + (*cap)[2] = 0; + if (3 < auVar3._8_8_ + 3) { + _Var6 = runtime::runtime_growslice + (&uint8___Uint8_type,(runtime_slice)in_stack_ffffffffffffff50,(int)cap); + cap = (uint8 (*) [3])_Var6.array; + } + runtime::runtime_memmove(cap + 1,auVar3._0_8_,auVar3._8_8_); + mVar7 = (*extraout_RAX->Write)(self_00,in_stack_ffffffffffffff50); + pvStack_10 = mVar7.~r1.data; + if (mVar7.~r1.tab != (error_itab *)0x0) { + local_18 = (mVar7.~r1.tab)->_type; + format.len = 0x28; + format.str = "[tun2socks][TCP][socks][remote.Write] %v"; + v_00.len = 1; + v_00.array = (interface___ *)&local_18; + v_00.cap = 1; + log::log_Printf(format,v_00); + (*extraout_RAX->Close)(self_00); + return mVar7.~r1; + } + rVar4.data = self_00; + rVar4.tab = (runtime_itab *)extraout_RAX; + r = (io_Reader)runtime::runtime_convI2I(&io::io_Reader___Interface_type,rVar4); + buf.len = 3; + buf.array = local_30; + buf.cap = 0x103; + mVar7 = io::io_ReadAtLeast(r,buf,3); + pvStack_10 = mVar7.~r1.data; + if (mVar7.~r1.tab != (error_itab *)0x0) { + local_18 = (mVar7.~r1.tab)->_type; + format_00.len = 0x27; + format_00.str = "[tun2socks][TCP][socks][io.ReadFull] %v"; + v_01.len = 1; + v_01.array = (interface___ *)&local_18; + v_01.cap = 1; + log::log_Printf(format_00,v_01); + (*extraout_RAX->Close)(self_00); + return mVar7.~r1; + } + i.data = self_00; + i.tab = (runtime_itab *)extraout_RAX; + rVar4 = runtime::runtime_convI2I(&io::io_Reader___Interface_type,i); + _Var6 = runtime::runtime_makeslice(&uint8___Uint8_type,0x103,0x103); + github.com/aiocloud/shadowsocks/socks::github_com_aiocloud_shadowsocks_socks_readAddr + (rVar4.tab,rVar4.data,_Var6.array,0x103,0x103); + if (extraout_RDI_00 == (error_itab *)0x0) { + fn = runtime::runtime_newobject + (&rixcloud_moe_aiocloud_tun2socks_proxies_socks_struct___F_uintptr___autotmp_18_net_Conn___autotmp_26_net_Conn_____Struct_type + .typ); + fn->_F = (uintptr)rixcloud_moe_aiocloud_tun2socks_proxies_socks___tcpHandler__Handle_dwrap_1; + (fn->_autotmp_18).tab = local_28; + (fn->_autotmp_18).data = param_2.data; + (fn->_autotmp_26).tab = extraout_RAX; + (fn->_autotmp_26).data = self_00; + runtime::runtime_newproc(0,(runtime_funcval *)fn); + return (error)ZEXT816(0); + } + local_18 = extraout_RDI_00->_type; + format_01.len = 0x2a; + format_01.str = "[tun2socks][TCP][socks][socks.ReadAddr] %v"; + v_02.len = 1; + v_02.array = (interface___ *)&local_18; + v_02.cap = 1; + pvStack_10 = extraout_RSI; + log::log_Printf(format_01,v_02); + (*extraout_RAX->Close)(self_00); + eVar5.data = extraout_RSI; + eVar5.tab = extraout_RDI_00; + return eVar5; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._tcpHandler_.Handle_dwrap_1.c b/Other/tun2socks/recovered/decompiled/proxies_socks._tcpHandler_.Handle_dwrap_1.c new file mode 100644 index 0000000..13e373f --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._tcpHandler_.Handle_dwrap_1.c @@ -0,0 +1,30 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*tcpHandler).Handle·dwrap·1 @ 2394ee0c0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739190 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/tcp.go:48 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*tcpHandler).Handle·dwrap·1() ??? +// Golang signature [recv_artificial, params_missing, return_info_missing]: func (*tcpHandler) +// Handle.dwrap.1(???) ??? +// Golang method in type *tcpHandler + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___tcpHandler__Handle_dwrap_1(void *self) + +{ + int unaff_RDX; + void *self_spill; + undefined1 auStack_28 [32]; + + while (&stack0x00000000 <= CURRENT_G.stackguard0) { + self = (void *)runtime::runtime_morestack(self); + } + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_28; + } + rixcloud.moe/aiocloud/tun2socks/tools::rixcloud_moe_aiocloud_tun2socks_tools_CopyBuffer + (*(undefined8 *)(unaff_RDX + 8),*(undefined8 *)(unaff_RDX + 0x10), + *(undefined8 *)(unaff_RDX + 0x18),*(undefined8 *)(unaff_RDX + 0x20)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Close.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Close.c new file mode 100644 index 0000000..079a481 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Close.c @@ -0,0 +1,64 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Close @ 2394ef3a0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739498 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:171 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Close() ??? +// Golang signature [params_missing, return_info_missing]: func (*udpHandler) Close(???) ??? +// Golang method in type {@address 239585ca0 *socks.udpHandler} + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Close + (rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self) + +{ + int *piVar1; + undefined8 in_RCX; + int in_RBX; + bool bVar2; + multireturn_unsafe_Pointer_bool_ mVar3; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self_spill; + int iStack0000000000000010; + undefined8 uStack0000000000000018; + int local_30; + undefined8 local_28; + code *local_20; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *prStack_18; + code **local_10; + + uStack0000000000000018 = in_RCX; + iStack0000000000000010 = in_RBX; + local_10 = (code **)0x0; + LOCK(); + bVar2 = (self->Mutex).state == 0; + if (bVar2) { + (self->Mutex).state = 1; + } + UNLOCK(); + if (!bVar2) { + sync::sync___Mutex__lockSlow(&self->Mutex); + } + local_20 = rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Close_dwrap_6; + local_10 = &local_20; + local_30 = iStack0000000000000010; + local_28 = uStack0000000000000018; + prStack_18 = self; + mVar3 = runtime::runtime_mapaccess2 + (&map_core_UDPConn__socks_udpData___Map_type,self->conns,&local_30); + piVar1 = *(int **)mVar3.~r0; + if (mVar3.~r1 != false) { + if (*piVar1 != 0) { + (**(code **)(*piVar1 + 0x18))(piVar1[1]); + } + if (piVar1[2] != 0) { + (**(code **)(piVar1[2] + 0x18))(piVar1[3]); + } + local_30 = iStack0000000000000010; + local_28 = uStack0000000000000018; + runtime::runtime_mapdelete(&map_core_UDPConn__socks_udpData___Map_type,self->conns,&local_30); + (**(code **)(iStack0000000000000010 + 0x18))(uStack0000000000000018); + } + (**local_10)(); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Close_dwrap_6.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Close_dwrap_6.c new file mode 100644 index 0000000..81c6fdc --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Close_dwrap_6.c @@ -0,0 +1,28 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Close·dwrap·6 @ 2394ef520 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739500 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:173 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Close·dwrap·6() ??? +// Golang signature [recv_artificial, params_missing, return_info_missing]: func (*udpHandler) +// Close.dwrap.6(???) ??? +// Golang method in type *udpHandler + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Close_dwrap_6(void *self) + +{ + int unaff_RDX; + void *self_spill; + undefined1 auStack_10 [8]; + + while (&stack0x00000000 <= CURRENT_G.stackguard0) { + self = (void *)runtime::runtime_morestack(self); + } + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_10; + } + sync::sync___Mutex__Unlock(*(sync_Mutex **)(unaff_RDX + 8)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Connect.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Connect.c new file mode 100644 index 0000000..73c1077 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Connect.c @@ -0,0 +1,259 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Connect @ 2394ee700 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739338 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:75 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Connect() ??? +// Golang signature [from_rtti_method]: func (*udpHandler) Connect(core.UDPConn, *net.UDPAddr) error +// Golang method in type {@address 239585ca0 *socks.udpHandler} + +error rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Connect + (rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self, + rixcloud_moe_aiocloud_tun2socks_core_UDPConn param_2,net_UDPAddr *param_3) + +{ + sdword sVar1; + uint8 *puVar2; + net_Conn_itab *extraout_RAX; + uint8 (*pauVar3) [10]; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_struct___F_uintptr___autotmp_33_core_UDPConn___autotmp_24_net_Conn___autotmp_34__socks_udpHandler__ + *fn; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpData *prVar4; + undefined8 *puVar5; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_struct___F_uintptr___autotmp_33_core_UDPConn___autotmp_35_net_PacketConn___autotmp_34__socks_udpHandler__ + *fn_00; + unsafe_Pointer pvVar6; + error_itab *extraout_RCX; + rixcloud_moe_aiocloud_tun2socks_core_UDPConn_itab *prVar7; + void *self_00; + unsafe_Pointer extraout_RSI; + unsafe_Pointer extraout_RDI; + error_itab *extraout_RDI_00; + bool bVar8; + string format; + io_Reader r; + string format_00; + runtime_iface rVar9; + string format_01; + error eVar10; + string network; + string format_02; + string network_00; + string format_03; + string format_04; + error eVar11; + __uint8 _Var12; + multireturn_int_error_ mVar13; + multireturn_net_UDPAddr___error_ mVar14; + multireturn_net_PacketConn_error_ mVar15; + runtime_iface i; + __interface___ v; + __interface___ v_00; + __byte buf; + __interface___ v_01; + __interface___ v_02; + __interface___ v_03; + __interface___ v_04; + __interface___ v_05; + __interface___ a; + string sVar16; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self_spill; + rixcloud_moe_aiocloud_tun2socks_core_UDPConn param_2_spill; + net_UDPAddr *param_3_spill; + __uint8 in_stack_ffffffffffffff58; + rixcloud_moe_aiocloud_tun2socks_core_UDPConn_itab *local_28; + unsafe_Pointer local_20; + runtime__type *local_18; + undefined *puStack_10; + string format_05; + + pvVar6 = param_2.data; + prVar7 = param_2.tab; + _Var12 = runtime::runtime_makeslice(&uint8___Uint8_type,0x103,0x103); + puVar2 = _Var12.array; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_handshake(self->t,puVar2,0x103,0x103); + if (extraout_RCX != (error_itab *)0x0) { + local_18 = extraout_RCX->_type; + sVar16.len = 0x35; + sVar16.str = "[tun2socks][UDP][socks][Connect] Handshake failed: %v"; + v.len = 1; + v.array = (interface___ *)&local_18; + v.cap = 1; + puStack_10 = extraout_RDI; + log::log_Printf(sVar16,v); + eVar11.data = extraout_RDI; + eVar11.tab = extraout_RCX; + return eVar11; + } + pauVar3 = runtime::runtime_newobject(&_10_uint8___Array_type.typ); + *(uint8 *)((int)pauVar3 + 0) = 5; + *(uint8 *)((int)pauVar3 + 1) = 3; + *(uint8 *)((int)pauVar3 + 2) = 0; + *(uint8 *)((int)pauVar3 + 3) = 1; + *(uint8 *)((int)pauVar3 + 4) = 0; + *(uint8 *)((int)pauVar3 + 5) = 0; + *(uint8 *)((int)pauVar3 + 6) = 0; + *(uint8 *)((int)pauVar3 + 7) = 0; + *(uint8 *)((int)pauVar3 + 8) = 0; + *(uint8 *)((int)pauVar3 + 9) = 0; + mVar13 = (*extraout_RAX->Write)(self_00,in_stack_ffffffffffffff58); + puStack_10 = mVar13.~r1.data; + if (mVar13.~r1.tab != (error_itab *)0x0) { + local_18 = (mVar13.~r1.tab)->_type; + format.len = 0x43; + format.str = "[tun2socks][UDP][socks][Connect] Failed to write handshake data: %v"; + v_00.len = 1; + v_00.array = (interface___ *)&local_18; + v_00.cap = 1; + log::log_Printf(format,v_00); + (*extraout_RAX->Close)(self_00); + return mVar13.~r1; + } + rVar9.data = self_00; + rVar9.tab = (runtime_itab *)extraout_RAX; + r = (io_Reader)runtime::runtime_convI2I(&io::io_Reader___Interface_type,rVar9); + buf.len = 3; + buf.array = puVar2; + buf.cap = 0x103; + mVar13 = io::io_ReadAtLeast(r,buf,3); + puStack_10 = mVar13.~r1.data; + if (mVar13.~r1.tab != (error_itab *)0x0) { + local_18 = (mVar13.~r1.tab)->_type; + format_00.len = 0x42; + format_00.str = "[tun2socks][UDP][socks][Connect] Failed to read handshake data: %v"; + v_01.len = 1; + v_01.array = (interface___ *)&local_18; + v_01.cap = 1; + log::log_Printf(format_00,v_01); + (*extraout_RAX->Close)(self_00); + return mVar13.~r1; + } + if (puVar2[1] != 0) { + local_18 = &uint8___Uint8_type; + puStack_10 = &DAT_23951ece0 + (uint)puVar2[1] * 8; + format_04.len = 0x46; + format_04.str = "[tun2socks][UDP][socks][Connect] The server refused the connection: %x"; + v_05.len = 1; + v_05.array = (interface___ *)&local_18; + v_05.cap = 1; + log::log_Printf(format_04,v_05); + (*extraout_RAX->Close)(self_00); + local_18 = &uint8___Uint8_type; + puStack_10 = &DAT_23951ece0 + (uint)puVar2[1] * 8; + format_05.len = 0x46; + format_05.str = "[tun2socks][UDP][socks][Connect] The server refused the connection: %x"; + a.len = 1; + a.array = (interface___ *)&local_18; + a.cap = 1; + eVar11 = fmt::fmt_Errorf(format_05,a); + return eVar11; + } + i.data = self_00; + i.tab = (runtime_itab *)extraout_RAX; + rVar9 = runtime::runtime_convI2I(&io::io_Reader___Interface_type,i); + _Var12 = runtime::runtime_makeslice(&uint8___Uint8_type,0x103,0x103); + github.com/aiocloud/shadowsocks/socks::github_com_aiocloud_shadowsocks_socks_readAddr + (rVar9.tab,rVar9.data,_Var12.array,0x103,0x103); + if (extraout_RDI_00 != (error_itab *)0x0) { + local_18 = extraout_RDI_00->_type; + format_01.len = 0x42; + format_01.str = "[tun2socks][UDP][socks][Connect] Failed to read remote address: %v"; + v_02.len = 1; + v_02.array = (interface___ *)&local_18; + v_02.cap = 1; + puStack_10 = extraout_RSI; + log::log_Printf(format_01,v_02); + (*extraout_RAX->Close)(self_00); + eVar10.data = extraout_RSI; + eVar10.tab = extraout_RDI_00; + return eVar10; + } + sVar16 = (string)github.com/aiocloud/shadowsocks/socks:: + github_com_aiocloud_shadowsocks_socks_Addr_String(); + network.len = 3; + network.str = "udp"; + mVar14 = net::net_ResolveUDPAddr(network,sVar16); + puStack_10 = mVar14.~r1.data; + if (mVar14.~r1.tab != (error_itab *)0x0) { + local_18 = (mVar14.~r1.tab)->_type; + format_02.len = 0x45; + format_02.str = "[tun2socks][UDP][socks][Connect] Failed to resolve remote address: %v"; + v_03.len = 1; + v_03.array = (interface___ *)&local_18; + v_03.cap = 1; + log::log_Printf(format_02,v_03); + (*extraout_RAX->Close)(self_00); + return mVar14.~r1; + } + local_28 = prVar7; + local_20 = pvVar6; + fn = runtime::runtime_newobject + (&rixcloud_moe_aiocloud_tun2socks_proxies_socks_struct___F_uintptr___autotmp_33_core_UDPConn___autotmp_24_net_Conn___autotmp_34__socks_udpHandler_____Struct_type + .typ); + fn->_F = (uintptr)rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Connect_dwrap_4; + (fn->_autotmp_33).tab = local_28; + (fn->_autotmp_33).data = local_20; + (fn->_autotmp_24).tab = extraout_RAX; + (fn->_autotmp_24).data = self_00; + fn->_autotmp_34 = self; + runtime::runtime_newproc(0,(runtime_funcval *)fn); + network_00.len = 3; + network_00.str = "udp"; + mVar15 = net::net_ListenPacket(network_00,(string)ZEXT816(0)); + puStack_10 = mVar15.~r1.data; + if (mVar15.~r1.tab == (error_itab *)0x0) { + LOCK(); + bVar8 = (self->Mutex).state == 0; + if (bVar8) { + (self->Mutex).state = 1; + } + UNLOCK(); + if (!bVar8) { + sync::sync___Mutex__lockSlow(&self->Mutex); + } + local_28 = prVar7; + local_20 = pvVar6; + prVar4 = runtime::runtime_newobject + (&rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpData___Struct_type.typ); + (prVar4->StreamConn).tab = extraout_RAX; + (prVar4->StreamConn).data = self_00; + (prVar4->PacketConn).tab = mVar15.~r0.tab; + (prVar4->PacketConn).data = mVar15.~r0.data; + prVar4->Target = mVar14.~r0; + puVar5 = runtime::runtime_mapassign + (&map_core_UDPConn__socks_udpData___Map_type,self->conns,&local_28); + *puVar5 = prVar4; + LOCK(); + sVar1 = (self->Mutex).state; + (self->Mutex).state = (self->Mutex).state + -1; + UNLOCK(); + if (sVar1 != 1) { + sync::sync___Mutex__unlockSlow(&self->Mutex); + } + local_28 = prVar7; + local_20 = pvVar6; + fn_00 = runtime::runtime_newobject + (&rixcloud_moe_aiocloud_tun2socks_proxies_socks_struct___F_uintptr___autotmp_33_core_UDPConn___autotmp_35_net_PacketConn___autotmp_34__socks_udpHandler_____Struct_type + .typ); + fn_00->_F = (uintptr) + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Connect_dwrap_5; + (fn_00->_autotmp_33).tab = local_28; + (fn_00->_autotmp_33).data = local_20; + (fn_00->_autotmp_35).tab = mVar15.~r0.tab; + (fn_00->_autotmp_35).data = mVar15.~r0.data; + fn_00->_autotmp_34 = self; + runtime::runtime_newproc(0,(runtime_funcval *)fn_00); + return (error)ZEXT816(0); + } + local_18 = (mVar15.~r1.tab)->_type; + format_03.len = 0x39; + format_03.str = "[tun2socks][UDP][socks][Connect]Failed to bind socket: %v"; + v_04.len = 1; + v_04.array = (interface___ *)&local_18; + v_04.cap = 1; + log::log_Printf(format_03,v_04); + (*extraout_RAX->Close)(self_00); + return mVar15.~r1; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Connect_dwrap_4.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Connect_dwrap_4.c new file mode 100644 index 0000000..72b4e39 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Connect_dwrap_4.c @@ -0,0 +1,29 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Connect·dwrap·4 @ 2394eef80 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 2397393e8 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:121 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Connect·dwrap·4() ??? +// Golang signature [recv_artificial, params_missing, return_info_missing]: func (*udpHandler) +// Connect.dwrap.4(???) ??? +// Golang method in type *udpHandler + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Connect_dwrap_4(void *self) + +{ + int unaff_RDX; + void *self_spill; + undefined1 auStack_30 [40]; + + while (&stack0x00000000 <= CURRENT_G.stackguard0) { + self = (void *)runtime::runtime_morestack(self); + } + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_30; + } + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__handle + (*(rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler **)(unaff_RDX + 0x28)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Connect_dwrap_5.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Connect_dwrap_5.c new file mode 100644 index 0000000..01fb453 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Connect_dwrap_5.c @@ -0,0 +1,29 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Connect·dwrap·5 @ 2394eef20 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 2397393a0 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:139 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Connect·dwrap·5() ??? +// Golang signature [recv_artificial, params_missing, return_info_missing]: func (*udpHandler) +// Connect.dwrap.5(???) ??? +// Golang method in type *udpHandler + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Connect_dwrap_5(void *self) + +{ + int unaff_RDX; + void *self_spill; + undefined1 auStack_30 [40]; + + while (&stack0x00000000 <= CURRENT_G.stackguard0) { + self = (void *)runtime::runtime_morestack(self); + } + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_30; + } + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__fetchInput + (*(rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler **)(unaff_RDX + 0x28)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Lock.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Lock.c new file mode 100644 index 0000000..b91c15b --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Lock.c @@ -0,0 +1,25 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Lock @ 2394ef580 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739548 "Flags: []"} +// Golang source: :1 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Lock() ??? +// Golang signature [from_rtti_method]: func (*udpHandler) Lock() +// Golang method in type {@address 239585ca0 *socks.udpHandler} + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Lock + (rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self) + +{ + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self_spill; + undefined1 auStack_10 [8]; + + self_spill = self; + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_10; + } + sync::sync___Mutex__Lock(&self_spill->Mutex); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.ReceiveTo.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.ReceiveTo.c new file mode 100644 index 0000000..b99d444 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.ReceiveTo.c @@ -0,0 +1,134 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).ReceiveTo @ 2394eefe0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739430 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:143 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).ReceiveTo() ??? +// Golang signature [from_rtti_method]: func (*udpHandler) ReceiveTo(core.UDPConn, []uint8, +// *net.UDPAddr) error +// Golang method in type {@address 239585ca0 *socks.udpHandler} + +error rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__ReceiveTo + (rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self, + rixcloud_moe_aiocloud_tun2socks_core_UDPConn param_2,__uint8 param_3, + net_UDPAddr *param_4) + +{ + uint len; + uintptr y; + sdword sVar1; + int iVar2; + uint8 *puVar3; + undefined **extraout_RCX; + uint x; + uintptr uVar4; + uintptr extraout_RBX; + uintptr n; + int extraout_RBX_00; + uintptr n_00; + bool bVar5; + string sVar6; + undefined1 auVar7 [16]; + error eVar8; + error eVar9; + __uint8 _Var10; + __interface___ v; + multireturn_unsafe_Pointer_bool_ mVar11; + __interface___ v_00; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self_spill; + rixcloud_moe_aiocloud_tun2socks_core_UDPConn param_2_spill; + __uint8 param_3_spill; + net_UDPAddr *param_4_spill; + runtime__type *local_28; + undefined **ppuStack_20; + rixcloud_moe_aiocloud_tun2socks_core_UDPConn_itab *local_18; + unsafe_Pointer local_10; + + n_00 = param_3.len; + LOCK(); + bVar5 = (self->Mutex).state == 0; + if (bVar5) { + (self->Mutex).state = 1; + } + UNLOCK(); + if (!bVar5) { + sync::sync___Mutex__lockSlow(&self->Mutex); + } + local_18 = param_2.tab; + local_10 = param_2.data; + mVar11 = runtime::runtime_mapaccess2 + (&map_core_UDPConn__socks_udpData___Map_type,self->conns,&local_18); + iVar2 = *(int *)mVar11.~r0; + LOCK(); + sVar1 = (self->Mutex).state; + (self->Mutex).state = (self->Mutex).state + -1; + UNLOCK(); + if (sVar1 != 1) { + sync::sync___Mutex__unlockSlow(&self->Mutex); + } + if (mVar11.~r1 == false) { + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Close(self); + local_28 = &string___String_type; + ppuStack_20 = &PTR_DAT_2395f1200; + v.len = 1; + v.array = (interface___ *)&local_28; + v.cap = 1; + log::log_Println(v); + eVar9.data = DAT_239743af8; + eVar9.tab = DAT_239743af0; + return eVar9; + } + sVar6 = net::net___UDPAddr__String(param_4); + auVar7 = github.com/aiocloud/shadowsocks/socks::github_com_aiocloud_shadowsocks_socks_ParseAddr + (sVar6.str,sVar6.len); + uVar4 = auVar7._8_8_; + len = uVar4 + n_00 + 3; + _Var10 = runtime::runtime_makeslice(&uint8___Uint8_type,len,len); + puVar3 = _Var10.array; + y = uVar4 + n_00; + if (len < 3) { + // WARNING: Subroutine does not return + runtime::runtime_panicSliceB(3,y); + } + n = y; + if ((int)uVar4 < (int)y) { + n = uVar4; + } + if (auVar7._0_8_ != puVar3 + ((int)-y >> 0x3f & 3)) { + runtime::runtime_memmove(puVar3 + ((int)-y >> 0x3f & 3),auVar7._0_8_,n); + n = extraout_RBX; + } + x = uVar4 + 3; + if (len < x) { + // WARNING: Subroutine does not return + runtime::runtime_panicSliceB(x,n); + } + if (param_3.array != puVar3 + ((int)-n_00 >> 0x3f & x)) { + runtime::runtime_memmove(puVar3 + ((int)-n_00 >> 0x3f & x),param_3.array,n_00); + } + (**(code **)(*(int *)(iVar2 + 0x10) + 0x48)) + (*(undefined8 *)(iVar2 + 0x18),puVar3,len,len, + &net::_net_UDPAddr__implements__net_Addr__itab,*(undefined8 *)(iVar2 + 0x20)); + if (extraout_RBX_00 == 0) { + return (error)ZEXT816(0); + } + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Close(self); + if (extraout_RBX_00 == 0) { + local_28 = (runtime__type *)0x0; + } + else { + local_28 = *(runtime__type **)(extraout_RBX_00 + 8); + } + sVar6.len = 0x3a; + sVar6.str = "[tun2socks][UDP][socks][ReceiveTo] Failed to send data: %v"; + v_00.len = 1; + v_00.array = (interface___ *)&local_28; + v_00.cap = 1; + ppuStack_20 = extraout_RCX; + log::log_Printf(sVar6,v_00); + eVar8.data = DAT_239743af8; + eVar8.tab = DAT_239743af0; + return eVar8; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Unlock.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Unlock.c new file mode 100644 index 0000000..ce87f4d --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.Unlock.c @@ -0,0 +1,25 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Unlock @ 2394ef5e0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 2397395b0 "Flags: []"} +// Golang source: :1 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).Unlock() ??? +// Golang signature [from_rtti_method]: func (*udpHandler) Unlock() +// Golang method in type {@address 239585ca0 *socks.udpHandler} + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Unlock + (rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self) + +{ + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self_spill; + undefined1 auStack_10 [8]; + + self_spill = self; + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_10; + } + sync::sync___Mutex__Unlock(&self_spill->Mutex); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.fetchInput.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.fetchInput.c new file mode 100644 index 0000000..a56955f --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.fetchInput.c @@ -0,0 +1,181 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).fetchInput @ 2394ee2a0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739288 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:40 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).fetchInput() ??? +// Golang signature [params_missing, return_info_missing]: func (*udpHandler) fetchInput(???) ??? +// Golang method in type {@address 239585ca0 *socks.udpHandler} + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__fetchInput + (rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self) + +{ + int iVar1; + uint x; + uint8 uVar2; + uint8 *puVar3; + undefined8 extraout_RAX; + uint x_00; + undefined8 in_RCX; + undefined8 extraout_RCX; + undefined8 uVar4; + undefined8 extraout_RCX_00; + uint8 *puVar5; + int in_RBX; + undefined8 extraout_RBX; + int extraout_RBX_00; + undefined8 in_RSI; + int in_RDI; + int extraout_RDI; + uint uVar6; + undefined1 auVar7 [16]; + string network; + string format; + __uint8 _Var8; + time_Time self_00; + multireturn_net_UDPAddr___error_ mVar9; + __interface___ v; + __interface___ v_00; + string sVar10; + __interface___ v_01; + __interface___ v_02; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self_spill; + int iStack0000000000000010; + undefined8 uStack0000000000000018; + int iStack0000000000000020; + undefined8 uStack0000000000000028; + runtime__type *local_40; + undefined **ppuStack_38; + code *local_30 [3]; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *local_18; + code **local_10; + + uStack0000000000000018 = in_RCX; + iStack0000000000000010 = in_RBX; + uStack0000000000000028 = in_RSI; + iStack0000000000000020 = in_RDI; + local_30[0] = rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__fetchInput_dwrap_3; + local_10 = local_30; + local_18 = self; + _Var8 = runtime::runtime_makeslice(&uint8___Uint8_type,0x5dc,0x5dc); + puVar3 = _Var8.array; + do { + while( true ) { + self_00 = time::time_Now(); + time::time_Time_Add(self_00); + (**(code **)(iStack0000000000000020 + 0x38)) + (uStack0000000000000028,extraout_RAX,extraout_RBX,extraout_RCX); + auVar7 = (**(code **)(iStack0000000000000020 + 0x28))(uStack0000000000000028,puVar3,0x5dc); + x_00 = auVar7._0_8_; + if (extraout_RDI != 0) { + (**local_10)(); + return; + } + if (2 < (int)x_00) break; + local_40 = &string___String_type; + ppuStack_38 = &PTR_DAT_2395f11e0; + v_00.len = 1; + v_00.array = (interface___ *)&local_40; + v_00.cap = 1; + log::log_Println(v_00); + } + if (0x5dc < x_00) { + // WARNING: Subroutine does not return + runtime::runtime_panicSliceAcap(x_00,auVar7._8_8_); + } + iVar1 = x_00 - 3; + if (iVar1 < 1) { + uVar6 = 0; + puVar5 = (uint8 *)0x0; + uVar4 = 0; + goto LAB_2394ee460; + } + uVar2 = puVar3[3]; + if (uVar2 == 1) { + uVar6 = 7; +LAB_2394ee42e: + if (iVar1 < (int)uVar6) { + uVar6 = 0; + puVar5 = (uint8 *)0x0; + uVar4 = 0; + } + else { + if (0x5d9 < uVar6) { + // WARNING: Subroutine does not return + runtime::runtime_panicSliceAcap(x_00,auVar7._8_8_); + } + puVar5 = puVar3 + 3; + uVar4 = 0x5d9; + } + } + else if (uVar2 == 3) { + if (1 < iVar1) { + uVar6 = puVar3[4] + 4; + goto LAB_2394ee42e; + } + uVar6 = 0; + puVar5 = (uint8 *)0x0; + uVar4 = 0; + } + else { + if (uVar2 == 4) { + uVar6 = 0x13; + goto LAB_2394ee42e; + } + uVar6 = 0; + puVar5 = (uint8 *)0x0; + uVar4 = 0; + } +LAB_2394ee460: + if (puVar5 == (uint8 *)0x0) { + local_40 = &string___String_type; + ppuStack_38 = &PTR_DAT_2395f11f0; + v.len = 1; + v.array = (interface___ *)&local_40; + v.cap = 1; + log::log_Println(v); + } + else { + sVar10 = (string)github.com/aiocloud/shadowsocks/socks:: + github_com_aiocloud_shadowsocks_socks_Addr_String(puVar5,uVar6,uVar4,puVar3); + network.len = 3; + network.str = "udp"; + mVar9 = net::net_ResolveUDPAddr(network,sVar10); + if (mVar9.~r1.tab == (error_itab *)0x0) { + x = uVar6 + 3; + if (x_00 < x) { + // WARNING: Subroutine does not return + runtime::runtime_panicSliceB(x,0); + } + (**(code **)(iStack0000000000000010 + 0x30)) + (uStack0000000000000018,puVar3 + (x & (int)(uVar6 - 0x5d9) >> 0x3f), + (x_00 - uVar6) + -3,-(uVar6 - 0x5d9),mVar9.~r0); + if (extraout_RBX_00 != 0) { + local_40 = *(runtime__type **)(extraout_RBX_00 + 8); + sVar10.len = 0x43; + sVar10.str = "[tun2socks][UDP][socks][fetchInput] Unable to write data packet: %v"; + v_02.len = 1; + v_02.array = (interface___ *)&local_40; + v_02.cap = 1; + ppuStack_38 = (undefined **)extraout_RCX_00; + log::log_Printf(sVar10,v_02); + (**local_10)(); + return; + } + } + else { + local_40 = (mVar9.~r1.tab)->_type; + format.len = 0x48; + format.str = "[tun2socks][UDP][socks][fetchInput] Failed to resolve target address: %v"; + v_01.len = 1; + v_01.array = (interface___ *)&local_40; + v_01.cap = 1; + ppuStack_38 = mVar9.~r1.data; + log::log_Printf(format,v_01); + } + } + } while( true ); +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.fetchInput_dwrap_3.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.fetchInput_dwrap_3.c new file mode 100644 index 0000000..1ce3ca3 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.fetchInput_dwrap_3.c @@ -0,0 +1,29 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).fetchInput·dwrap·3 @ 2394ee6a0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 2397392f0 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:41 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).fetchInput·dwrap·3() ??? +// Golang signature [recv_artificial, params_missing, return_info_missing]: func (*udpHandler) +// fetchInput.dwrap.3(???) ??? +// Golang method in type *udpHandler + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__fetchInput_dwrap_3(void *self) + +{ + int unaff_RDX; + void *self_spill; + undefined1 auStack_20 [24]; + + while (&stack0x00000000 <= CURRENT_G.stackguard0) { + self = (void *)runtime::runtime_morestack(self); + } + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_20; + } + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__Close + (*(rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler **)(unaff_RDX + 0x18)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.handle.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.handle.c new file mode 100644 index 0000000..84f7de2 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.handle.c @@ -0,0 +1,40 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).handle @ 2394ee120 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 2397391d8 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:29 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).handle() ??? +// Golang signature [params_missing, return_info_missing]: func (*udpHandler) handle(???) ??? +// Golang method in type {@address 239585ca0 *socks.udpHandler} + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__handle + (rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self) + +{ + int extraout_RBX; + undefined8 in_RSI; + int in_RDI; + __uint8 _Var1; + rixcloud_moe_aiocloud_tun2socks_proxies_socks_udpHandler *self_spill; + int iStack0000000000000020; + undefined8 uStack0000000000000028; + code *local_28 [3]; + code **local_10; + + uStack0000000000000028 = in_RSI; + while (&stack0x00000000 <= CURRENT_G.stackguard0) { + iStack0000000000000020 = in_RDI; + runtime::runtime_morestack_noctxt(); + in_RDI = iStack0000000000000020; + } + local_28[0] = rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__handle_dwrap_2; + local_10 = local_28; + _Var1 = runtime::runtime_makeslice(&uint8___Uint8_type,1,1); + do { + (**(code **)(in_RDI + 0x28))(uStack0000000000000028,_Var1.array,1,1); + } while (extraout_RBX == 0); + (**local_10)(); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.handle_dwrap_2.c b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.handle_dwrap_2.c new file mode 100644 index 0000000..864f9ff --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks._udpHandler_.handle_dwrap_2.c @@ -0,0 +1,28 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).handle·dwrap·2 @ 2394ee240 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739240 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/udp.go:30 +// Golang stacktrace signature: func +// rixcloud.moe/aiocloud/tun2socks/proxies/socks.(*udpHandler).handle·dwrap·2() ??? +// Golang signature [recv_artificial, params_missing, return_info_missing]: func (*udpHandler) +// handle.dwrap.2(???) ??? +// Golang method in type *udpHandler + +void rixcloud.moe/aiocloud/tun2socks/proxies/socks:: + rixcloud_moe_aiocloud_tun2socks_proxies_socks___udpHandler__handle_dwrap_2(void *self) + +{ + int unaff_RDX; + void *self_spill; + undefined1 auStack_10 [8]; + + while (&stack0x00000000 <= CURRENT_G.stackguard0) { + self = (void *)runtime::runtime_morestack(self); + } + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &self_spill)) { + (CURRENT_G._panic)->argp = auStack_10; + } + (**(code **)(*(int *)(unaff_RDX + 8) + 0x18))(*(undefined8 *)(unaff_RDX + 0x10)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/proxies_socks.handshake.c b/Other/tun2socks/recovered/decompiled/proxies_socks.handshake.c new file mode 100644 index 0000000..a4c1a2b --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/proxies_socks.handshake.c @@ -0,0 +1,162 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/proxies/socks.handshake @ 2394ed720 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 2397390c0 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/proxies/socks/socks.go:12 +// Golang stacktrace signature: func rixcloud.moe/aiocloud/tun2socks/proxies/socks.handshake() ??? + +undefined1 [32] +rixcloud.moe/aiocloud/tun2socks/proxies/socks:: +rixcloud_moe_aiocloud_tun2socks_proxies_socks_handshake + (int param_1,int param_2,uint param_3,uint param_4) + +{ + uint8 (*pauVar1) [4]; + errors_errorString *peVar2; + undefined1 auVar3 [32]; + undefined1 auVar4 [32]; + undefined1 auVar5 [32]; + undefined1 auVar6 [32]; + undefined1 auVar7 [32]; + undefined1 auVar8 [32]; + undefined1 auVar9 [32]; + uint uVar10; + undefined8 uVar11; + string network; + io_Reader iVar12; + multireturn_int_error_ mVar13; + __byte _Var14; + multireturn_net_Conn_error_ mVar15; + runtime_iface i; + runtime_iface i_00; + __byte buf; + int iStack0000000000000008; + int iStack0000000000000010; + uint uStack0000000000000018; + uint uStack0000000000000020; + __uint8 in_stack_ffffffffffffff40; + uint8 local_88 [32]; + uint8 local_68 [32]; + unsafe_Pointer local_48; + void *local_40; + net_Conn_itab *local_38; + bytes_Buffer local_30; + + uVar10 = 0; + uVar11._0_1_ = 0; + uVar11._1_7_ = 0; + iStack0000000000000008 = param_1; + uStack0000000000000018 = param_3; + iStack0000000000000010 = param_2; + uStack0000000000000020 = param_4; + network.len = 3; + network.str = "tcp"; + mVar15 = net::net_Dial(network,*(string *)(iStack0000000000000008 + 0x10)); + local_40 = mVar15.~r0.data; + local_38 = mVar15.~r0.tab; + if (mVar15.~r1.tab != (error_itab *)0x0) { + auVar9._0_16_ = ZEXT816(0); + auVar9._16_8_ = mVar15.~r1.tab; + auVar9._24_8_ = mVar15.~r1.data; + return auVar9; + } + pauVar1 = runtime::runtime_newobject(&_4_uint8___Array_type.typ); + *pauVar1 = (uint8 [4])0x2000205; + mVar13 = (*local_38->Write)(local_40,in_stack_ffffffffffffff40); + local_48 = mVar13.~r1.data; + if (mVar13.~r1.tab != (error_itab *)0x0) { + (*local_38->Close)(local_40); + auVar8._0_16_ = ZEXT816(0); + auVar8._16_8_ = mVar13.~r1.tab; + auVar8._24_8_ = local_48; + return auVar8; + } + if (uStack0000000000000020 < 2) { + // WARNING: Subroutine does not return + runtime::runtime_panicSliceAcap(mVar13.~r0,0); + } + i.data = local_40; + i.tab = (runtime_itab *)local_38; + iVar12 = (io_Reader)runtime::runtime_convI2I(&io::io_Reader___Interface_type,i); + _Var14.len = 2; + _Var14.array = (uint8 *)iStack0000000000000010; + _Var14.cap = uStack0000000000000020; + mVar13 = io::io_ReadAtLeast(iVar12,_Var14,2); + local_48 = mVar13.~r1.data; + if (mVar13.~r1.tab != (error_itab *)0x0) { + (*local_38->Close)(local_40); + auVar7._0_16_ = ZEXT816(0); + auVar7._16_8_ = mVar13.~r1.tab; + auVar7._24_8_ = local_48; + return auVar7; + } + if (uStack0000000000000018 < 2) { + // WARNING: Subroutine does not return + runtime::runtime_panicIndex(1,0); + } + if (*(char *)(iStack0000000000000010 + 1) == '\x02') { + local_30.buf.array = *runtime::runtime_newobject(&_1_uint8___Array_type.typ); + (*(uint8 (*) [1])local_30.buf.array)[0] = 1; + local_30.buf.len = 1; + local_30.buf.cap = 1; + local_30.off = uVar10; + local_30._32_8_ = uVar11; + bytes::bytes___Buffer__WriteByte(&local_30); + _Var14 = runtime::runtime_stringtoslicebyte + (&local_68,*(string *)(iStack0000000000000008 + 0x20)); + bytes::bytes___Buffer__Write(&local_30,(__uint8)_Var14); + bytes::bytes___Buffer__WriteByte(&local_30); + _Var14 = runtime::runtime_stringtoslicebyte + (&local_88,*(string *)(iStack0000000000000008 + 0x30)); + mVar13 = bytes::bytes___Buffer__Write(&local_30,(__uint8)_Var14); + if ((uint)local_30.buf.len < (uint)local_30.off) { + // WARNING: Subroutine does not return + runtime::runtime_panicSliceB(local_30.off,(int)mVar13.~r1.tab); + } + mVar13 = (*local_38->Write)(local_40,in_stack_ffffffffffffff40); + local_48 = mVar13.~r1.data; + if (mVar13.~r1.tab != (error_itab *)0x0) { + (*local_38->Close)(local_40); + auVar6._0_16_ = ZEXT816(0); + auVar6._16_8_ = mVar13.~r1.tab; + auVar6._24_8_ = local_48; + return auVar6; + } + i_00.data = local_40; + i_00.tab = (runtime_itab *)local_38; + iVar12 = (io_Reader)runtime::runtime_convI2I(&io::io_Reader___Interface_type,i_00); + buf.len = 2; + buf.array = (uint8 *)iStack0000000000000010; + buf.cap = uStack0000000000000020; + mVar13 = io::io_ReadAtLeast(iVar12,buf,2); + local_48 = mVar13.~r1.data; + if (mVar13.~r1.tab != (error_itab *)0x0) { + (*local_38->Close)(local_40); + auVar5._0_16_ = ZEXT816(0); + auVar5._16_8_ = mVar13.~r1.tab; + auVar5._24_8_ = local_48; + return auVar5; + } + if (*(char *)(iStack0000000000000010 + 1) != '\0') { + (*local_38->Close)(local_40); + peVar2 = runtime::runtime_newobject(&errors::errors_errorString___Struct_type.typ); + (peVar2->s).len = 0x15; + (peVar2->s).str = &DAT_2395a0536; + auVar4._0_16_ = ZEXT816(0); + auVar4._16_8_ = &errors::_errors_errorString__implements__error__itab; + auVar4._24_8_ = peVar2; + return auVar4; + } + } + else if (*(char *)(iStack0000000000000010 + 1) != '\0') { + (*local_38->Close)(local_40); + peVar2 = runtime::runtime_newobject(&errors::errors_errorString___Struct_type.typ); + (peVar2->s).len = 0xe; + (peVar2->s).str = "unknown method"; + auVar3._0_16_ = ZEXT816(0); + auVar3._16_8_ = &errors::_errors_errorString__implements__error__itab; + auVar3._24_8_ = peVar2; + return auVar3; + } + return ZEXT1632(CONCAT88(local_40,local_38)); +} + diff --git a/Other/tun2socks/recovered/decompiled/tools.CopyBuffer.c b/Other/tun2socks/recovered/decompiled/tools.CopyBuffer.c new file mode 100644 index 0000000..0f7aa28 --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/tools.CopyBuffer.c @@ -0,0 +1,78 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/tools.CopyBuffer @ 2394ed2c0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239738f80 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/tools/tools.go:19 +// Golang stacktrace signature: func rixcloud.moe/aiocloud/tun2socks/tools.CopyBuffer() ??? + +void rixcloud.moe/aiocloud/tun2socks/tools::rixcloud_moe_aiocloud_tun2socks_tools_CopyBuffer + (net_Conn_itab *param_1,unsafe_Pointer param_2,net_Conn_itab *param_3, + unsafe_Pointer param_4) + +{ + rixcloud_moe_aiocloud_tun2socks_tools_struct___F_uintptr__client_net_Conn__remote_net_Conn__ *fn; + io_Writer dst; + io_Reader src; + error eVar1; + __uint8 _Var2; + runtime_iface i; + runtime_iface i_00; + __byte buf; + net_Conn_itab *pnStack0000000000000008; + unsafe_Pointer pvStack0000000000000010; + net_Conn_itab *pnStack0000000000000018; + unsafe_Pointer pvStack0000000000000020; + time_Time in_stack_ffffffffffffff50; + code *local_48; + net_Conn_itab *pnStack_40; + unsafe_Pointer local_38; + code *local_30; + net_Conn_itab *pnStack_28; + unsafe_Pointer local_20; + code **local_18; + code **ppcStack_10; + + pvStack0000000000000010 = param_2; + pvStack0000000000000020 = param_4; + while (pnStack0000000000000008 = param_1, pnStack0000000000000018 = param_3, + &local_30 <= CURRENT_G.stackguard0) { + runtime::runtime_morestack_noctxt(); + param_1 = pnStack0000000000000008; + param_3 = pnStack0000000000000018; + } + local_30 = rixcloud_moe_aiocloud_tun2socks_tools_CopyBuffer_dwrap_1; + ppcStack_10 = &local_30; + local_48 = rixcloud_moe_aiocloud_tun2socks_tools_CopyBuffer_dwrap_2; + local_18 = &local_48; + pnStack_40 = param_3; + local_38 = pvStack0000000000000020; + pnStack_28 = param_1; + local_20 = pvStack0000000000000010; + fn = runtime::runtime_newobject + (&rixcloud_moe_aiocloud_tun2socks_tools_struct___F_uintptr__client_net_Conn__remote_net_Conn_____Struct_type + .typ); + fn->_F = (uintptr)rixcloud_moe_aiocloud_tun2socks_tools_CopyBuffer_func1; + (fn->client).tab = param_1; + (fn->client).data = pvStack0000000000000010; + (fn->remote).tab = param_3; + (fn->remote).data = pvStack0000000000000020; + runtime::runtime_newproc(0,(runtime_funcval *)fn); + _Var2 = runtime::runtime_makeslice(&uint8___Uint8_type,0x578,0x578); + i.data = pvStack0000000000000020; + i.tab = (runtime_itab *)param_3; + dst = (io_Writer)runtime::runtime_convI2I(&io::io_Writer___Interface_type,i); + i_00.data = pvStack0000000000000010; + i_00.tab = (runtime_itab *)param_1; + src = (io_Reader)runtime::runtime_convI2I(&io::io_Reader___Interface_type,i_00); + buf.len = 0x578; + buf.array = _Var2.array; + buf.cap = 0x578; + io::io_CopyBuffer(dst,src,buf); + time::time_Now(); + (*param_1->SetDeadline)(pvStack0000000000000010,in_stack_ffffffffffffff50); + time::time_Now(); + eVar1 = (*param_3->SetDeadline)(pvStack0000000000000020,in_stack_ffffffffffffff50); + (**local_18)(eVar1.tab,eVar1.data); + (**ppcStack_10)(); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/tools.CopyBuffer.func1.c b/Other/tun2socks/recovered/decompiled/tools.CopyBuffer.func1.c new file mode 100644 index 0000000..17099ad --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/tools.CopyBuffer.func1.c @@ -0,0 +1,44 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/tools.CopyBuffer.func1 @ 2394ed560 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239738fe8 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/tools/tools.go:23 +// Golang stacktrace signature: func rixcloud.moe/aiocloud/tun2socks/tools.CopyBuffer.func1() ??? +// Golang signature [params_missing, return_info_missing, closure]: func(.context, ???) ??? + +error rixcloud.moe/aiocloud/tun2socks/tools::rixcloud_moe_aiocloud_tun2socks_tools_CopyBuffer_func1 + (rixcloud_moe_aiocloud_tun2socks_tools_struct___F_uintptr__client_net_Conn__remote_net_Conn__ + *_context) + +{ + net_Conn_itab *pnVar1; + net_Conn_itab *pnVar2; + void *self; + void *self_00; + net_Conn i; + net_Conn i_00; + io_Writer dst; + io_Reader src; + error eVar3; + __uint8 _Var4; + __byte buf; + time_Time in_stack_ffffffffffffff88; + pnVar1 = (_context->client).tab; + pnVar2 = (_context->remote).tab; + self = (_context->client).data; + i = _context->client; + self_00 = (_context->remote).data; + i_00 = _context->remote; + _Var4 = runtime::runtime_makeslice(&uint8___Uint8_type,0x578,0x578); + dst = (io_Writer)runtime::runtime_convI2I(&io::io_Writer___Interface_type,(runtime_iface)i); + src = (io_Reader)runtime::runtime_convI2I(&io::io_Reader___Interface_type,(runtime_iface)i_00); + buf.len = 0x578; + buf.array = _Var4.array; + buf.cap = 0x578; + io::io_CopyBuffer(dst,src,buf); + time::time_Now(); + (*pnVar1->SetDeadline)(self,in_stack_ffffffffffffff88); + time::time_Now(); + eVar3 = (*pnVar2->SetDeadline)(self_00,in_stack_ffffffffffffff88); + return eVar3; +} + diff --git a/Other/tun2socks/recovered/decompiled/tools.CopyBuffer_dwrap_1.c b/Other/tun2socks/recovered/decompiled/tools.CopyBuffer_dwrap_1.c new file mode 100644 index 0000000..7237d9f --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/tools.CopyBuffer_dwrap_1.c @@ -0,0 +1,21 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/tools.CopyBuffer·dwrap·1 @ 2394ed6c0 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739078 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/tools/tools.go:20 +// Golang stacktrace signature: func rixcloud.moe/aiocloud/tun2socks/tools.CopyBuffer·dwrap·1() +// ??? + +void rixcloud.moe/aiocloud/tun2socks/tools:: + rixcloud_moe_aiocloud_tun2socks_tools_CopyBuffer_dwrap_1(void) + +{ + int unaff_RDX; + undefined1 auStack_10 [8]; + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &stack0x00000008)) + { + (CURRENT_G._panic)->argp = auStack_10; + } + (**(code **)(*(int *)(unaff_RDX + 8) + 0x18))(*(undefined8 *)(unaff_RDX + 0x10)); + return; +} + diff --git a/Other/tun2socks/recovered/decompiled/tools.CopyBuffer_dwrap_2.c b/Other/tun2socks/recovered/decompiled/tools.CopyBuffer_dwrap_2.c new file mode 100644 index 0000000..58aeb8f --- /dev/null +++ b/Other/tun2socks/recovered/decompiled/tools.CopyBuffer_dwrap_2.c @@ -0,0 +1,21 @@ +// Ghidra 12.1.4 decompile of rixcloud.moe/aiocloud/tun2socks/tools.CopyBuffer·dwrap·2 @ 2394ed660 (Storage/tun2socks.bin) +// RAW OUTPUT, NOT SOURCE. Pseudo-C of Go code. +// Golang function info: {@address 239739030 "Flags: []"} +// Golang source: rixcloud.moe/aiocloud/tun2socks/tools/tools.go:21 +// Golang stacktrace signature: func rixcloud.moe/aiocloud/tun2socks/tools.CopyBuffer·dwrap·2() +// ??? + +void rixcloud.moe/aiocloud/tun2socks/tools:: + rixcloud_moe_aiocloud_tun2socks_tools_CopyBuffer_dwrap_2(void) + +{ + int unaff_RDX; + undefined1 auStack_10 [8]; + if ((CURRENT_G._panic != (runtime__panic *)0x0) && ((CURRENT_G._panic)->argp == &stack0x00000008)) + { + (CURRENT_G._panic)->argp = auStack_10; + } + (**(code **)(*(int *)(unaff_RDX + 8) + 0x18))(*(undefined8 *)(unaff_RDX + 0x10)); + return; +} + diff --git a/Other/tun2socks/structs/structs.go b/Other/tun2socks/structs/structs.go new file mode 100644 index 0000000..551cc7f --- /dev/null +++ b/Other/tun2socks/structs/structs.go @@ -0,0 +1,14 @@ +package structs + +// ServerInfo describes one outbound server; tun_dial fills it field by field. +type ServerInfo struct { + Type string + Hostname string + Username string + Password string + Method string + Prot string + ProtParam string + OBFS string + OBFSParam string +} diff --git a/Other/tun2socks/tools/tools.go b/Other/tun2socks/tools/tools.go new file mode 100644 index 0000000..47905d1 --- /dev/null +++ b/Other/tun2socks/tools/tools.go @@ -0,0 +1,29 @@ +package tools + +import ( + "io" + "net" + "time" +) + +// ponytail: fixed 32 KiB per direction; pool it if memory with many connections matters. +const bufferSize = 32 * 1024 + +// CopyBuffer relays data in both directions until either side stops, then closes both connections. +func CopyBuffer(client, remote net.Conn) { + defer client.Close() + defer remote.Close() + + go func() { + io.CopyBuffer(client, remote, make([]byte, bufferSize)) + + // wake up the other direction + client.SetDeadline(time.Now()) + remote.SetDeadline(time.Now()) + }() + + io.CopyBuffer(remote, client, make([]byte, bufferSize)) + + client.SetDeadline(time.Now()) + remote.SetDeadline(time.Now()) +} diff --git a/Other/v2ray-sn/README.md b/Other/v2ray-sn/README.md index 8615db2..b313fbb 100644 --- a/Other/v2ray-sn/README.md +++ b/Other/v2ray-sn/README.md @@ -1,4 +1,4 @@ -# Project V for SagerNet for Netch +# Project V for SagerNet for Netrix This is not a joke. Modified from [SagerNet/v2ray-core](https://github.com/SagerNet/v2ray-core). #### Extends all features of SagerNet/v2ray-core diff --git a/Other/v2ray-sn/build.ps1 b/Other/v2ray-sn/build.ps1 index 2864949..7a7f21b 100644 --- a/Other/v2ray-sn/build.ps1 +++ b/Other/v2ray-sn/build.ps1 @@ -18,12 +18,18 @@ Remove-Item '.\common\buf\readv_reader.go' Invoke-WebRequest -Uri 'https://raw.githubusercontent.com/SagerNet/v2ray-core/2711fd1/common/buf/io.go' -OutFile '.\common\buf\io.go' Invoke-WebRequest -Uri 'https://raw.githubusercontent.com/SagerNet/v2ray-core/2711fd1/common/buf/readv_reader.go' -OutFile '.\common\buf\readv_reader.go' +# ponytail: with current Go, CI failed on SagerNet/gvisor (gohacks: "build constraints exclude all Go files"). +# Use Go 1.18, the version upstream v2ray-core v5.0.16 CI builds with. CI installs it and exports GO118 (its GOROOT). +$go = if ($Env:GO118) { Join-Path $Env:GO118 'bin\go.exe' } else { 'go' } + $Env:CGO_ENABLED='0' $Env:GOROOT_FINAL='/usr' $Env:GOOS='windows' $Env:GOARCH='amd64' -go get -u ./... -go mod tidy -go build -a -trimpath -asmflags '-s -w' -ldflags '-s -w -buildid=' -o '..\..\release\v2ray-sn.exe' '.\main' +# ponytail: no "go get -u": build with the dependency versions pinned in go.mod +# ponytail: pin clash for the SSR/obfs patch files above; the newest clash (1.16+) needs Go 1.20 (protobytes), which gVisor rejects +& $go get -d github.com/Dreamacro/clash@v1.11.0 +& $go mod tidy +& $go build -a -trimpath -asmflags '-s -w' -ldflags '-s -w -buildid=' -o '..\..\release\v2ray-sn.exe' '.\main' exit $lastExitCode diff --git a/README.md b/README.md index 9e80d56..ab04c91 100644 --- a/README.md +++ b/README.md @@ -1,41 +1,153 @@ -# `In preparation for 2.0, this repository will be cleared of all 1.0 related releases and code` -

- -
- -# Netch -A simple proxy client - -[![](https://img.shields.io/badge/telegram-group-green?style=flat-square)](https://t.me/netch_group) -[![](https://img.shields.io/badge/telegram-channel-blue?style=flat-square)](https://t.me/netch_channel) -[![](https://img.shields.io/github/downloads/netchx/netch/total.svg?style=flat-square)](https://github.com/netchx/netch/releases) -[![](https://img.shields.io/github/v/release/netchx/netch?style=flat-square)](https://github.com/netchx/netch/releases) -
- -## Features -Some features may not be implemented in version 1 - -### Modes -- `ProcessMode` - Use Netfilter driver to intercept process traffic -- `ShareMode` - Share your network based on WinPcap / Npcap -- `TunMode` - Use WinTUN driver to create virtual adapter -- `WebMode` - Web proxy mode - -### Protocols -- [`Socks5`](https://www.wikiwand.com/en/SOCKS) -- [`Shadowsocks`](https://shadowsocks.org) -- [`ShadowsocksR`](https://github.com/shadowsocksrr/shadowsocksr-libev) -- [`WireGuard`](https://www.wireguard.com) -- [`Trojan`](https://trojan-gfw.github.io/trojan) -- [`VMess`](https://www.v2fly.org) -- [`VLESS`](https://xtls.github.io) - -### Others -- UDP NAT FullCone (Limited by your server) -- .NET 6.0 x64 - -## Sponsor -JetBrains - -## License -Netch is licensed under the [GPLv3](https://raw.githubusercontent.com/netchx/netch/main/LICENSE) license +

+ Netrix +

+ +

Netrix

+ +

+ A proxy client for Windows.
+ Send one app, the whole PC, or other devices through a proxy server. +

+ +

+ Version + Platform + .NET + License +

+ +

+ Quick start · + Modes · + Features · + Skip an app or IP · + Troubleshooting · + Build +

+ +--- + +## Quick start + +1. **Download** the latest `Netrix.7z` from [Releases](https://github.com/psnwd/netrix/releases) and unpack it anywhere. +2. **Run `Netrix.exe` as administrator.** TUN and Process modes install drivers and change routes. +3. **Add a server:** *Server* menu, or paste a share link and use *Import Servers From Clipboard*, or add a subscription under *Subscription*. +4. **Pick a mode.** If unsure, choose a TUN mode such as **Bypass LAN**. +5. **Press Start.** The number next to each server is its delay in ms; lower is faster. + +> New to Netrix? Open **Help > Documentation** inside the app. Hover any control for a tooltip. + +

+ Built-in help: modes +

+ +## Modes + +| Mode | Proxies | Skips by | Needs | +|---|---|---|---| +| **Process** | Chosen programs, or everything except chosen programs | Program (regular expression on its path) | NetFilter driver | +| **TUN** | The whole PC, IPv4 and IPv6 | IP address or range (CIDR) | WinTUN adapter | +| **Share** | Other devices on your network | -- | [Npcap](https://npcap.com) | +| **Web** | Apps that honour the Windows system proxy | Bypass list | Nothing extra | + +**Process**: `handle` rules pick the programs to proxy, `bypass` rules pick the ones to leave alone. Rules are regular expressions, e.g. `chrome.exe`. The *Select* button adds every program in a folder, *Scan* lists the `.exe` files in it. +**TUN**: a virtual adapter takes all traffic, so it also covers apps that ignore proxy settings. If your server has no IPv6, Netrix detects it and rejects IPv6 connections so apps fall back to IPv4 at once instead of hanging. +**Web**: sets the Windows system proxy and puts your old values back when you stop, even after a crash. + +## Features + +### Servers +- Shadowsocks, ShadowsocksR, SOCKS5, SSH, Trojan, VMess, VLESS, WireGuard +- Add by hand, from share links on the clipboard, or from a subscription (refreshed when Netrix opens) +- Delay test with TCP or ICMP ping, repeated while the window is open + +### Everything else +- **NAT type test** in the status bar (1 open, 2 restricted, 3 symmetric) using a STUN server you choose +- **Speed and usage** in the status bar: download and upload shown separately in TUN mode +- **Quick-start profiles**: save a server and a mode under a name, then start with one click. Click to use, Ctrl+Click to save, Shift+Click to delete +- **Local DNS** (AioDNS) with a response cache, or your own DNS server +- **UDP** relayed through the proxy, with FullCone NAT when the server supports it +- **Safe updates**: the app only installs a release signed with the project key, checks the file hash, and rolls back if applying the update fails +- **Built-in help, tooltips and keyboard shortcuts** (Enter saves Settings, Esc closes small windows) + +## Skip an app or an IP + + + + + + +
+ +**Skip a program** + +Use a Process mode and add the exe name to its *Bypass* list. The ready-made mode **Global Bypass Apps** proxies everything except a list of apps. + +TUN mode cannot skip by program, because Windows routes by address only. + + + +**Skip an IP or range** + +Use a TUN mode and add the address to its *Bypass* list, e.g. `192.168.0.0/16`. To skip it in every TUN mode, use *Settings > TUN tab > Global Bypass IPs*. + +
+ +## Troubleshooting + +| Symptom | Try | +|---|---| +| Nothing connects | Check the server delay, then read `logging\application.log` | +| TUN mode will not start | Run as administrator; check that `bin\wintun.dll` exists | +| NAT shows **NoUDP** | Pick another STUN server in Settings; if all fail, the proxy server blocks UDP | +| NAT shows **UnsupportedServer** | That STUN server cannot do the test. Use `stun.1und1.de` (the default), `stun.miwifi.com` or `stun.fitauto.ru` | +| One site hangs, others work | Probably IPv6. Look for "no working IPv6 path" in the log | +| Internet gone after a crash | Start Netrix again; it restores the system proxy. Also try *Options > Remove Netrix Firewall Rules* | +| An update broke something | A failed update rolls back to the old files automatically | + +## Files + +Next to `Netrix.exe`: + +| Folder | Contents | +|---|---| +| `data\` | Settings and server list. Back this up | +| `mode\` | Mode files, editable as text or JSON | +| `logging\` | Logs, including `tun2socks.log` | +| `bin\` | Helper programs and drivers | + +## Build + +Needs the .NET 10 SDK, MSBuild with the C++ toolchain, and Go and Rust for the bundled helper programs. + +```powershell +.\build.ps1 # dev build into .\.build\dev (keeps its data\ folder) +.\build.ps1 -Release # release build into .\.build\release +.\build.ps1 -PlatformToolset v145 # machine with only Visual Studio 2026 +dotnet test Tests\Tests.csproj -p:Platform=x64 +``` + +| Path | What it is | +|---|---| +| `Netrix/` | The WinForms app | +| `Redirector/`, `RouteHelper/` | Native C++ helpers (process redirector, route table) | +| `Other/` | Helpers built from source: tun2socks, aiodns, pcap2socks, v2ray-sn, wintun | +| `Storage/` | Files shipped with a release: translations, mode files, STUN list, driver | +| `Tests/` | Unit tests | +| `.docs/` | Notes, task list, performance results | + +Toolchain details are in [.docs/CLAUDE.md](.docs/CLAUDE.md). Release signing is described in [sign.ps1](sign.ps1). + +## Problems and ideas + +What changed in each version: [CHANGELOG.md](CHANGELOG.md). + +Open an [issue](https://github.com/psnwd/netrix/issues) and attach the log from the `logging` folder. + +## Credits + +Netrix is based on [Netch](https://github.com/NetchX/Netch), Copyright (c) 2019 AmazingDM and Contributors. Third-party components are listed in [Netrix/NOTICE.txt](Netrix/NOTICE.txt). + +## License + +[GPLv3](LICENSE) diff --git a/RedirectorTester/.gitignore b/RedirectorTester/.gitignore deleted file mode 100644 index aeb4af3..0000000 --- a/RedirectorTester/.gitignore +++ /dev/null @@ -1,3 +0,0 @@ -/bin -/obj -/*.csproj.user diff --git a/RedirectorTester/App.config b/RedirectorTester/App.config deleted file mode 100644 index 3916e0e..0000000 --- a/RedirectorTester/App.config +++ /dev/null @@ -1,6 +0,0 @@ - - - - - - \ No newline at end of file diff --git a/RedirectorTester/App.manifest b/RedirectorTester/App.manifest deleted file mode 100644 index 3963a0b..0000000 --- a/RedirectorTester/App.manifest +++ /dev/null @@ -1,27 +0,0 @@ - - - - - - - - - - - - - - - - - - - - - - - - - - - diff --git a/RedirectorTester/Properties/AssemblyInfo.cs b/RedirectorTester/Properties/AssemblyInfo.cs deleted file mode 100644 index 6b99dde..0000000 --- a/RedirectorTester/Properties/AssemblyInfo.cs +++ /dev/null @@ -1,35 +0,0 @@ -using System.Reflection; -using System.Runtime.InteropServices; - -// 有关程序集的一般信息由以下 -// 控制。更改这些特性值可修改 -// 与程序集关联的信息。 -[assembly: AssemblyTitle("RedirectorTester")] -[assembly: AssemblyDescription("")] -[assembly: AssemblyConfiguration("")] -[assembly: AssemblyCompany("")] -[assembly: AssemblyProduct("RedirectorTester")] -[assembly: AssemblyCopyright("Copyright © 2021")] -[assembly: AssemblyTrademark("")] -[assembly: AssemblyCulture("")] - -// 将 ComVisible 设置为 false 会使此程序集中的类型 -//对 COM 组件不可见。如果需要从 COM 访问此程序集中的类型 -//请将此类型的 ComVisible 特性设置为 true。 -[assembly: ComVisible(false)] - -// 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID -[assembly: Guid("9142c528-9e42-448d-96b6-7e62e47b54f3")] - -// 程序集的版本信息由下列四个值组成: -// -// 主版本 -// 次版本 -// 生成号 -// 修订号 -// -//可以指定所有这些值，也可以使用“生成号”和“修订号”的默认值 -//通过使用 "*"，如下所示: -// [assembly: AssemblyVersion("1.0.*")] -[assembly: AssemblyVersion("1.0.0.0")] -[assembly: AssemblyFileVersion("1.0.0.0")] diff --git a/RedirectorTester/RedirectorTester.cs b/RedirectorTester/RedirectorTester.cs deleted file mode 100644 index 6370815..0000000 --- a/RedirectorTester/RedirectorTester.cs +++ /dev/null @@ -1,83 +0,0 @@ -using System; -using System.Runtime.InteropServices; - -namespace RedirectorTester -{ - public class RedirectorTester - { - public enum NameList : int - { - AIO_FILTERLOOPBACK, - AIO_FILTERINTRANET, - AIO_FILTERPARENT, - AIO_FILTERICMP, - AIO_FILTERTCP, - AIO_FILTERUDP, - AIO_FILTERDNS, - - AIO_ICMPING, - - AIO_DNSHOST, - AIO_DNSPORT, - - AIO_TGTHOST, - AIO_TGTPORT, - AIO_TGTUSER, - AIO_TGTPASS, - - AIO_CLRNAME, - AIO_ADDNAME, - AIO_BYPNAME - } - - [DllImport("Redirector.bin", CallingConvention = CallingConvention.Cdecl)] - public static extern bool aio_register([MarshalAs(UnmanagedType.LPWStr)] string value); - - [DllImport("Redirector.bin", CallingConvention = CallingConvention.Cdecl)] - public static extern bool aio_unregister([MarshalAs(UnmanagedType.LPWStr)] string value); - - [DllImport("Redirector.bin", CallingConvention = CallingConvention.Cdecl)] - public static extern bool aio_dial(NameList name, [MarshalAs(UnmanagedType.LPWStr)] string value); - - [DllImport("Redirector.bin", CallingConvention = CallingConvention.Cdecl)] - public static extern bool aio_init(); - - [DllImport("Redirector.bin", CallingConvention = CallingConvention.Cdecl)] - public static extern void aio_free(); - - [DllImport("Redirector.bin", CallingConvention = CallingConvention.Cdecl)] - public static extern ulong aio_getUP(); - - [DllImport("Redirector.bin", CallingConvention = CallingConvention.Cdecl)] - public static extern ulong aio_getDL(); - - public static void Main(string[] args) - { - aio_dial(NameList.AIO_FILTERLOOPBACK, "false"); - aio_dial(NameList.AIO_FILTERINTRANET, "true"); - aio_dial(NameList.AIO_FILTERPARENT, "true"); - aio_dial(NameList.AIO_FILTERICMP, "true"); - aio_dial(NameList.AIO_FILTERTCP, "true"); - aio_dial(NameList.AIO_FILTERUDP, "true"); - aio_dial(NameList.AIO_FILTERDNS, "true"); - - aio_dial(NameList.AIO_ICMPING, "10"); - - aio_dial(NameList.AIO_DNSHOST, "1.1.1.1"); - aio_dial(NameList.AIO_DNSPORT, "53"); - - aio_dial(NameList.AIO_TGTHOST, "127.0.0.1"); - aio_dial(NameList.AIO_TGTPORT, "1080"); - aio_dial(NameList.AIO_TGTUSER, ""); - aio_dial(NameList.AIO_TGTPASS, ""); - - aio_dial(NameList.AIO_CLRNAME, ""); - aio_dial(NameList.AIO_ADDNAME, "Telegram"); - aio_dial(NameList.AIO_ADDNAME, "NatTypeTester"); - - aio_init(); - Console.ReadLine(); - aio_free(); - } - } -} diff --git a/RedirectorTester/RedirectorTester.csproj b/RedirectorTester/RedirectorTester.csproj deleted file mode 100644 index 5eac5b9..0000000 --- a/RedirectorTester/RedirectorTester.csproj +++ /dev/null @@ -1,66 +0,0 @@ - - - - - Debug - AnyCPU - {9142C528-9E42-448D-96B6-7E62E47B54F3} - Exe - RedirectorTester - RedirectorTester - v4.8 - 512 - true - true - - - true - bin\Debug\ - DEBUG;TRACE - full - x64 - 7.3 - prompt - true - - - bin\Release\ - TRACE - true - pdbonly - x64 - 7.3 - prompt - true - - - RedirectorTester.RedirectorTester - - - App.manifest - - - - - - - - - - - - - - - - - - - - - - COPY /Y $(SolutionDir)Redirector\bin\$(Configuration)\nfapi.dll $(TargetDir) > NUL 2>&1 -COPY /Y $(SolutionDir)Redirector\bin\$(Configuration)\Redirector.bin $(TargetDir) > NUL 2>&1 -COPY /Y $(SolutionDir)Redirector\bin\$(Configuration)\Redirector.pdb $(TargetDir) > NUL 2>&1 - - \ No newline at end of file diff --git a/Storage/README.md b/Storage/README.md index 50553ad..23cb678 100644 --- a/Storage/README.md +++ b/Storage/README.md @@ -1,38 +1,26 @@ -# Netch -Prebuilt binaries for Netch version 1 +# Netrix +Files shipped with a Netrix release, and where each part comes from. + +## Built from source in this repository +| Part | Source | Based on | +| :- | :- | :- | +| `aiodns.bin` | [`Other/aiodns`](../Other/aiodns) | the aiodns component of [Netch](https://github.com/NetchX/Netch) | +| `Redirector.bin`, `nfapi.dll` | [`Redirector`](../Redirector) | the Redirector component of Netch (NetFilter SDK) | +| `RouteHelper.bin` | [`RouteHelper`](../RouteHelper) | the RouteHelper component of Netch | +| `tun2socks.bin` | [`Other/tun2socks`](../Other/tun2socks) (recovered source, see its `RECOVERY.md`) | the closed-source DLL shipped with Netch; not [xjasonlyu/tun2socks](https://github.com/xjasonlyu/tun2socks) | +| `pcap2socks.exe` | [`Other/pcap2socks`](../Other/pcap2socks) (vendored) | [zhxie/pcap2socks](https://github.com/zhxie/pcap2socks) | +| `v2ray-sn.exe` | [`Other/v2ray-sn`](../Other/v2ray-sn) | [SagerNet/v2ray-core](https://github.com/SagerNet/v2ray-core) | + +## Downloaded at build time +- `wintun.dll`: [WinTUN](https://www.wintun.net) 0.13 +- `GeoLite2-Country.mmdb`: [Loyalsoldier/geoip](https://github.com/Loyalsoldier/geoip) `release` branch (rolling, so not hash-pinned) + +## Bundled files (provenance) + +| File | Version / origin | SHA256 | +| :- | :- | :- | +| `tun2socks.bin` | Original closed-source DLL (module `rixcloud.moe/aiocloud/tun2socks`, go1.17.1, not upstream xjasonlyu). Kept as reference/fallback: the release build now compiles `Other/tun2socks` (recovered source, see its `RECOVERY.md`) and ships that instead | `1eaca52e1b73491747df71403fdd1228481c7f43691af623aac29889619f0d23` | +| `nfdriver.sys` | Netfilter SDK driver, file version 1.6.3.0, signed prebuilt. `Redirector` (nfapi) is tied to it: do not swap one without the other | `4af6f672119f4f13e33b8914630eedea97d299b5c92c2105a4015dd0ca6e933e` | +| `aiodns.conf` | rule data for aiodns | `d161dbd19b3dc9e20904e5f48d5f6757e9c28d33cb9aeb031495c678c0467e95` | +| `stun.txt` | default STUN servers | `f51c11fa9f15c2bd64f0094e6c45be0186dbb46d9e7997f3d9ef09dd830d0b52` | -## aiodns -https://github.com/netchx/netch - -## Redirector -https://github.com/netchx/netch - -## RouteHelper -https://github.com/netchx/netch - -## ck-client -https://github.com/cbeuw/Cloak - -## GeoLite2 -https://www.maxmind.com - -## xray-core -https://github.com/xtls/xray-core - -## shadowsocks-libev -https://github.com/shadowsocks/shadowsocks-rust - -## shadowsocksr-libev -https://github.com/shadowsocksrr/shadowsocksr-libev - -## simple-obfs -https://github.com/shadowsocks/simple-obfs - -## tun2socks -https://github.com/xjasonlyu/tun2socks - -## v2ray-plugin -https://github.com/teddysun/v2ray-plugin - -## WinTUN -https://www.wintun.net diff --git a/Storage/i18n/fa-IR b/Storage/i18n/fa-IR index 0ffc4b5..99e0870 100644 --- a/Storage/i18n/fa-IR +++ b/Storage/i18n/fa-IR @@ -3,7 +3,6 @@ "Information": "اطلاعات", "Error": "خطا", - "If this is your first time using this software,\n please check https://netch.org to install supports first,\n or the program may report errors.": "If this is your first time using this software,\n please check https://netch.org to install supports first,\n or the program may report errors.", "Missing File or runtime components": "فایل یا اجزای زمان اجرا از دست رفته است", "Please extract all files then run the program!": "لطفا تمام فایل ها را استخراج کنید سپس برنامه را اجرا کنید!", @@ -27,7 +26,7 @@ "Server": "سرور", "Import Servers From Clipboard": "تنظیمات سرور را از کلیپ بورد وارد کنید", "Add [{0}] Server": "سرور [{0}] را اضافه کنید", - "Netch is now minimized to the notification bar, double click this icon to restore.": "Netch در نوار اعلان به حداقل رسیده است. برای بازیابی روی این نماد دوبار کلیک کنید.", + "Netrix is now minimized to the notification bar, double click this icon to restore.": "Netrix در نوار اعلان به حداقل رسیده است. برای بازیابی روی این نماد دوبار کلیک کنید.", "New version available": "نسخه جدید وجود دارد", "Already latest version": "در حال حاضر آخرین نسخه است", "New version found failed": "نسخه جدیدی پیدا نشد", @@ -89,7 +88,7 @@ "Modes have been reload": "لیست حالت دوباره بارگیری شد", "Clean DNS Cache": "کش DNS را پاک کنید", "DNS cache cleanup succeeded": "کش DNS پاک شد", - "Remove Netch Firewall Rules": "قانون نچ فایروال را حذف کنید", + "Remove Netrix Firewall Rules": "قانون نچ فایروال را حذف کنید", "Update PAC": "قوانین PAC به روز کردن", "PAC updated successfully": "PAC به روز شد", @@ -104,7 +103,6 @@ "About": "اطلاعات نسخه", "FAQ": "سوالات متداول", - "Telegram Channel": "کانال تلگرام", "Sponsor": "حامی", "Configuration": "تنظیم اطلاعات", diff --git a/Storage/i18n/ja-JP b/Storage/i18n/ja-JP index 0a45506..fafa427 100644 --- a/Storage/i18n/ja-JP +++ b/Storage/i18n/ja-JP @@ -3,7 +3,6 @@ "Information": "情報", "Error": "エラー", - "If this is your first time using this software,\n please check https://netch.org to install supports first,\n or the program may report errors.": "このソフトウェアを初めて使用する場合、\nhttps://netch.orgから必要要件(.NET Framework 4.8)をインストールしてください。\n", "Missing File or runtime components": "必要なファイルまたはランタイムが見つかりません。", "Please extract all files then run the program!": "すべてのファイルを抽出するとプログラムが実行できます！", @@ -11,7 +10,7 @@ "Stop": "停止", "Waiting for command": "待機中", "Starting": "起動しています", - "Start failed": "起動中にエラーが発生しました。Netchが配置されているディレクトリのloggingフォルダ内のログを確認してください。", + "Start failed": "起動中にエラーが発生しました。Netrixが配置されているディレクトリのloggingフォルダ内のログを確認してください。", "Started": "起動しました", "Stopping": "停止中", "Stopped": "停止しました", @@ -27,7 +26,7 @@ "Server": "サーバー", "Import Servers From Clipboard": "クリップボードからサーバー設定をインポートする", "Add [{0}] Server": "[{0}] サーバーを追加", - "Netch is now minimized to the notification bar, double click this icon to restore.": "Netchが通知バーに最小化されました。このアイコンをダブルクリックして復元します。", + "Netrix is now minimized to the notification bar, double click this icon to restore.": "Netrixが通知バーに最小化されました。このアイコンをダブルクリックして復元します。", "New version available": "新しいバージョンがあります", "Already latest version": "すでに最新バージョンです", "New version found failed": "新しいバージョンが見つかりませんでした", @@ -89,7 +88,7 @@ "Modes have been reload": "モードリストをリロードされました", "Clean DNS Cache": "DNSキャッシュを削除", "DNS cache cleanup succeeded": "DNSキャッシュが削除されました", - "Remove Netch Firewall Rules": "Netch ファイアウォール規則を削除", + "Remove Netrix Firewall Rules": "Netrix ファイアウォール規則を削除", "Update PAC": "PAC規則を更新", "PAC updated successfully": "PACを更新完了", @@ -104,7 +103,6 @@ "About": "バージョン情報", "FAQ": "よくある質問", - "Telegram Channel": "Telegram チャンネル", "Sponsor": "スポンサー", "Configuration": "設定情報", diff --git a/Storage/i18n/zh-TW b/Storage/i18n/zh-TW index 44a6bda..f5cf912 100644 --- a/Storage/i18n/zh-TW +++ b/Storage/i18n/zh-TW @@ -3,7 +3,6 @@ "Information": "資訊", "Error": "錯誤", - "If this is your first time using this software,\n please check https://netch.org to install supports first,\n or the program may report errors.": "如果你是第一次使用本軟體，\n請務必前往https://netch.org安裝程式相依套件，\n否則程式將無法正常執行！", "Missing File or runtime components": "缺少檔案或執行階段元件", "Please extract all files then run the program!": "請先解壓縮所有檔案再啟動應用程式！", @@ -27,7 +26,7 @@ "Server": "伺服器", "Import Servers From Clipboard": "從剪貼簿匯入伺服器", "Add [{0}] Server": "新增 [{0}] 伺服器", - "Netch is now minimized to the notification bar, double click this icon to restore.": "Netch 已最小化至通知欄，雙擊圖示還原視窗。", + "Netrix is now minimized to the notification bar, double click this icon to restore.": "Netrix 已最小化至通知欄，雙擊圖示還原視窗。", "New version available": "發現新版本", "Already latest version": "已經是最新版本", "New version found failed": "檢查新版本失敗", @@ -89,7 +88,7 @@ "Modes have been reload": "模式清單已重新讀取", "Clean DNS Cache": "清理 DNS 快取", "DNS cache cleanup succeeded": "DNS 快取清理成功", - "Remove Netch Firewall Rules": "移除 Netch 防火牆規則", + "Remove Netrix Firewall Rules": "移除 Netrix 防火牆規則", "Update PAC": "更新 PAC", "PAC updated successfully": "PAC 更新成功", @@ -104,7 +103,6 @@ "About": "關於", "FAQ": "常見問題", - "Telegram Channel": "Telegram 頻道", "Sponsor": "贊助商", "Configuration": "設定資訊", diff --git a/Storage/mode/Global Bypass Apps.json b/Storage/mode/Global Bypass Apps.json new file mode 100644 index 0000000..14a2956 --- /dev/null +++ b/Storage/mode/Global Bypass Apps.json @@ -0,0 +1,27 @@ +{ + "type": "ProcessMode", + "remark": { + "zh-CN": "Global Bypass Apps" + }, + "handle": [ + ".*" + ], + "bypass": [ + "\Netrix\\", + "qbittorrent.exe", + "utorrent.exe", + "steam.exe", + "steamwebhelper.exe" + ], + "filterIntranet": true, + "filterLoopback": false, + "dnsHost": "1.1.1.1:53", + "handleOnlyDNS": null, + "icmpDelay": 10, + "filterParent": null, + "filterDNS": true, + "filterUDP": true, + "filterTCP": true, + "filterICMP": true, + "dnsProxy": null +} diff --git a/Storage/mode/Global.json b/Storage/mode/Global.json index 5bffd18..3d51bf5 100644 --- a/Storage/mode/Global.json +++ b/Storage/mode/Global.json @@ -1,23 +1,23 @@ -{ - "type": "ProcessMode", - "remark": { - "zh-CN": "Global" - }, - "handle": [ - ".*" - ], - "bypass": [ - "\\Netch\\" - ], - "filterIntranet": true, - "filterLoopback": false, - "dnsHost": "1.1.1.1:53", - "handleOnlyDNS": null, - "icmpDelay": 10, - "filterParent": null, - "filterDNS": true, - "filterUDP": true, - "filterTCP": true, - "filterICMP": true, - "dnsProxy": null +{ + "type": "ProcessMode", + "remark": { + "zh-CN": "Global" + }, + "handle": [ + ".*" + ], + "bypass": [ + "\\Netrix\\" + ], + "filterIntranet": true, + "filterLoopback": false, + "dnsHost": "1.1.1.1:53", + "handleOnlyDNS": null, + "icmpDelay": 10, + "filterParent": null, + "filterDNS": true, + "filterUDP": true, + "filterTCP": true, + "filterICMP": true, + "dnsProxy": null } \ No newline at end of file diff --git a/Storage/mode/System Proxy.json b/Storage/mode/System Proxy.json new file mode 100644 index 0000000..816decb --- /dev/null +++ b/Storage/mode/System Proxy.json @@ -0,0 +1,8 @@ +{ + "type": "WebMode", + "remark": { + "en": "[Web Proxy] System proxy (apps that honour it)", + "zh-CN": "[系统代理] 系统代理（仅支持代理设置的程序）" + }, + "bypass": "" +} diff --git a/Storage/stun.txt b/Storage/stun.txt index f27cbee..fdd0523 100644 --- a/Storage/stun.txt +++ b/Storage/stun.txt @@ -1,5 +1,3 @@ -stun.qq.com -stun.bige0.com +stun.1und1.de stun.miwifi.com -stun.syncthing.net -stun.stunprotocol.org \ No newline at end of file +stun.fitauto.ru \ No newline at end of file diff --git a/Tests/ControllerTests.cs b/Tests/ControllerTests.cs new file mode 100644 index 0000000..4e711a4 --- /dev/null +++ b/Tests/ControllerTests.cs @@ -0,0 +1,240 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Text.Json; +using System.Threading.Tasks; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Microsoft.Win32; +using Netrix.Controllers; +using Netrix.Models; +using Netrix.Models.Modes.WebMode; +using Netrix.Servers; + +namespace Tests +{ + [TestClass] + public class ControllerTests + { + // ---- Guard: supervises a child process ---- + + private class FakeGuard : Guard + { + private readonly string[] _started; + private readonly string[] _failed; + + public FakeGuard(string[] started, string[] failed) : base("cmd.exe") + { + _started = started; + _failed = failed; + } + + public override string Name => "FakeGuard"; + protected override IEnumerable StartedKeywords => _started; + protected override IEnumerable FailedKeywords => _failed; + public Task Start(string args) => StartGuardAsync(args); + + // the real one opens the log file in the user's editor + protected override void OnStartFailed() + { + } + + // Instance is disposed after Stop, so remember the id while it runs + public int Pid { get; private set; } + + protected override void OnReadNewLine(string line) + { + Pid = Instance.Id; + } + } + + [ClassInitialize] + public static void Init(TestContext _) + { + // Guard resolves bin\ against the current directory, runs in NetrixDir\bin and logs to logging\ + Directory.CreateDirectory("bin"); + Directory.CreateDirectory("logging"); + Directory.CreateDirectory(Path.Combine(Netrix.Global.NetrixDir, "bin")); + Directory.CreateDirectory(Path.Combine(Netrix.Global.NetrixDir, "data")); + File.Copy(Path.Combine(Environment.SystemDirectory, "cmd.exe"), Path.Combine("bin", "cmd.exe"), true); + } + + [TestMethod] + public async Task Guard_StartedKeyword_ReturnsAndStopKillsChild() + { + var g = new FakeGuard(new[] { "READY" }, new string[0]); + await g.Start("/c echo READY & ping -n 30 127.0.0.1 >nul"); + var pid = g.Pid; + Assert.IsTrue(IsAlive(pid)); + + await g.StopAsync(); + Assert.IsFalse(IsAlive(pid)); + } + + [TestMethod] + public async Task Guard_StopTwice_DoesNotThrow() + { + // the user clicks Stop after the helper already died (lost network): the second stop used to throw from its own catch block + var g = new FakeGuard(new[] { "READY" }, new string[0]); + await g.Start("/c echo READY & ping -n 30 127.0.0.1 >nul"); + await g.StopAsync(); + await g.StopAsync(); + } + + [TestMethod] + public async Task Guard_FailedKeyword_Throws() + { + var g = new FakeGuard(new[] { "READY" }, new[] { "BOOM" }); + await Assert.ThrowsExactlyAsync(() => g.Start("/c echo BOOM & ping -n 30 127.0.0.1 >nul")); + Assert.AreNotEqual(0, g.Pid); + Assert.IsFalse(IsAlive(g.Pid)); + } + + private static bool IsAlive(int pid) + { + try + { + return !System.Diagnostics.Process.GetProcessById(pid).HasExited; + } + catch (ArgumentException) + { + return false; + } + } + + [TestMethod] + public async Task Guard_ExitBeforeStartedKeyword_FailsFast() + { + var g = new FakeGuard(new[] { "READY" }, new string[0]); + var sw = System.Diagnostics.Stopwatch.StartNew(); + await Assert.ThrowsExactlyAsync(() => g.Start("/c echo hello & exit 3")); + Assert.IsLessThan(10_000, sw.ElapsedMilliseconds); // used to wait the full 50 s timeout + } + + // ---- WebController: Windows system proxy ---- + + private const string TestRoot = @"Software\NetrixTest"; + private const string TestKey = TestRoot + @"\InternetSettings"; + + [TestMethod] + public async Task Web_StartSetsProxyAndStopRestoresPrevious() + { + WebController.KeyPath = TestKey; + Registry.CurrentUser.DeleteSubKeyTree(TestRoot, false); + using (var k = Registry.CurrentUser.CreateSubKey(TestKey)) + { + k.SetValue("ProxyEnable", 0, RegistryValueKind.DWord); + k.SetValue("ProxyServer", "old:1", RegistryValueKind.String); + // ProxyOverride deliberately absent: must be absent again after stop + } + + try + { + var c = new WebController(); + await c.StartAsync(new Socks5Server("127.0.0.1", 1080), new WebMode { Bypass = ";10.*" }); + + using (var k = Registry.CurrentUser.OpenSubKey(TestKey)!) + { + Assert.AreEqual(1, k.GetValue("ProxyEnable")); + Assert.AreEqual("socks=127.0.0.1:1080", k.GetValue("ProxyServer")); + Assert.AreEqual(";10.*", k.GetValue("ProxyOverride")); + } + + await c.StopAsync(); + + using (var k = Registry.CurrentUser.OpenSubKey(TestKey)!) + { + Assert.AreEqual(0, k.GetValue("ProxyEnable")); + Assert.AreEqual("old:1", k.GetValue("ProxyServer")); + Assert.IsNull(k.GetValue("ProxyOverride")); + } + } + finally + { + Registry.CurrentUser.DeleteSubKeyTree(TestRoot, false); + } + } + + [TestMethod] + public async Task Web_CrashThenRecover_RestoresPrevious() + { + WebController.KeyPath = TestKey; + Registry.CurrentUser.DeleteSubKeyTree(TestRoot, false); + using (var k = Registry.CurrentUser.CreateSubKey(TestKey)) + k.SetValue("ProxyServer", "old:2", RegistryValueKind.String); + + try + { + await new WebController().StartAsync(new Socks5Server("127.0.0.1", 1080), new WebMode()); + // "crash": the controller is dropped without StopAsync + WebController.RecoverAfterCrash(); + + using var k = Registry.CurrentUser.OpenSubKey(TestKey)!; + Assert.AreEqual("old:2", k.GetValue("ProxyServer")); + Assert.IsNull(k.GetValue("ProxyEnable")); + } + finally + { + Registry.CurrentUser.DeleteSubKeyTree(TestRoot, false); + } + } + + // ---- V2ray config generation ---- + + private static async Task Config(Server s) + { + var cfg = await V2rayConfigUtils.GenerateClientConfigAsync(s); + return JsonSerializer.SerializeToElement(cfg, Netrix.Global.NewCustomJsonSerializerOptions()); + } + + [TestMethod] + public async Task V2ray_InboundIsLocalSocks() + { + var c = await Config(new Socks5Server("127.0.0.1", 1080)); + var inbound = c.GetProperty("inbounds")[0]; + Assert.AreEqual("socks", inbound.GetProperty("protocol").GetString()); + Assert.AreEqual(Netrix.Global.Settings.Socks5LocalPort, inbound.GetProperty("port").GetInt32()); + } + + [TestMethod] + public async Task V2ray_OutboundProtocolPerServerType() + { + (Server server, string protocol)[] cases = + { + (new Socks5Server("127.0.0.1", 1080), "socks"), + (new ShadowsocksServer { Hostname = "127.0.0.1", Port = 8388, EncryptMethod = "aes-256-gcm", Password = "p" }, "shadowsocks"), + (new ShadowsocksRServer { Hostname = "127.0.0.1", Port = 8388, Password = "p" }, "shadowsocks"), + (new TrojanServer { Hostname = "127.0.0.1", Port = 443, Password = "p" }, "trojan"), + (new VMessServer { Hostname = "127.0.0.1", Port = 443, UserID = "feb54431-301b-52bb-a6dd-e1e93e81bb9e" }, "vmess"), + (new VLESSServer { Hostname = "127.0.0.1", Port = 443, UserID = "feb54431-301b-52bb-a6dd-e1e93e81bb9e" }, "vless"), + (new WireGuardServer { Hostname = "127.0.0.1", Port = 51820, PrivateKey = "k", PeerPublicKey = "p" }, "wireguard"), + }; + + foreach (var (server, protocol) in cases) + { + var c = await Config(server); + Assert.AreEqual(protocol, c.GetProperty("outbounds")[0].GetProperty("protocol").GetString(), server.Type); + } + } + + [TestMethod] + public async Task V2ray_Socks5Auth_OnlyWhenCredentialsSet() + { + var withAuth = await Config(new Socks5Server("127.0.0.1", 1080, "u", "p")); + var user = withAuth.GetProperty("outbounds")[0].GetProperty("settings").GetProperty("servers")[0].GetProperty("users")[0]; + Assert.AreEqual("u", user.GetProperty("user").GetString()); + Assert.AreEqual("p", user.GetProperty("pass").GetString()); + + var noAuth = await Config(new Socks5Server("127.0.0.1", 1080)); + Assert.IsFalse(noAuth.GetProperty("outbounds")[0].GetProperty("settings").GetProperty("servers")[0].TryGetProperty("users", out _)); + } + + [TestMethod] + public async Task V2ray_VMessAddressAndPort() + { + var c = await Config(new VMessServer { Hostname = "127.0.0.1", Port = 4443, UserID = "feb54431-301b-52bb-a6dd-e1e93e81bb9e" }); + var vnext = c.GetProperty("outbounds")[0].GetProperty("settings").GetProperty("vnext")[0]; + Assert.AreEqual("127.0.0.1", vnext.GetProperty("address").GetString()); + Assert.AreEqual(4443, vnext.GetProperty("port").GetInt32()); + } + } +} diff --git a/Tests/IPv6ProbeTests.cs b/Tests/IPv6ProbeTests.cs new file mode 100644 index 0000000..fdac9d2 --- /dev/null +++ b/Tests/IPv6ProbeTests.cs @@ -0,0 +1,49 @@ +using System.Net; +using System.Net.Sockets; +using System.Threading.Tasks; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Netrix.Servers; +using Netrix.Utils; + +namespace Tests +{ + [TestClass] + public class IPv6ProbeTests + { + // fake SOCKS5 server: accepts CONNECT, then either answers the HTTP request or stays silent (like a server without IPv6 egress) + private static ushort Serve(bool answer) + { + var l = new TcpListener(IPAddress.Loopback, 0); + l.Start(); + _ = Task.Run(async () => + { + using var c = await l.AcceptTcpClientAsync(); + var s = c.GetStream(); + var b = new byte[64]; + await s.ReadAsync(b, 0, 3); // greeting + await s.WriteAsync(new byte[] { 5, 0 }); + await s.ReadAsync(b, 0, 22); // CONNECT to an IPv6 address + await s.WriteAsync(new byte[] { 5, 0, 0, 1, 0, 0, 0, 0, 0, 0 }); + await s.ReadAsync(b, 0, b.Length); // HEAD request + if (answer) + await s.WriteAsync(new byte[] { (byte)'H', (byte)'T', (byte)'T', (byte)'P' }); + else + await Task.Delay(8000); + l.Stop(); + }); + return (ushort)((IPEndPoint)l.LocalEndpoint).Port; + } + + [TestMethod] + public async Task Works_when_data_comes_back() + { + Assert.IsTrue(await Socks5ServerTestUtils.IPv6WorksAsync(new Socks5Server("127.0.0.1", Serve(true)))); + } + + [TestMethod] + public async Task Fails_when_connection_stalls() + { + Assert.IsFalse(await Socks5ServerTestUtils.IPv6WorksAsync(new Socks5Server("127.0.0.1", Serve(false)))); + } + } +} diff --git a/Tests/ModeSettingTests.cs b/Tests/ModeSettingTests.cs new file mode 100644 index 0000000..adeb53a --- /dev/null +++ b/Tests/ModeSettingTests.cs @@ -0,0 +1,85 @@ +using System.IO; +using System.Text.Json; +using System.Text.Json.Serialization; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Netrix; +using Netrix.JsonConverter; +using Netrix.Models; +using Netrix.Models.Modes; +using Netrix.Models.Modes.ProcessMode; +using Netrix.Models.Modes.ShareMode; +using Netrix.Models.Modes.TunMode; +using Netrix.Models.Modes.WebMode; +using Netrix.Utils; + +namespace Tests +{ + [TestClass] + public class ModeSettingTests + { + static T RoundTrip(T mode) where T : Mode + { + mode.FullName = Path.Combine(Path.GetTempPath(), $"netrix-test-{System.Guid.NewGuid()}.json"); + try + { + mode.WriteFile(); + return (T)ModeHelper.LoadMode(mode.FullName); + } + finally + { + File.Delete(mode.FullName); + } + } + + [TestMethod] + public void ProcessMode_RoundTrip() + { + var m = new Redirector { FilterTCP = true, FilterLoopback = true, Bypass = { "a.exe" }, Handle = { "b.exe", "c.exe" }, Remark = { ["en"] = "p" } }; + var b = RoundTrip(m); + Assert.AreEqual(true, b.FilterTCP); + Assert.IsTrue(b.FilterLoopback); + CollectionAssert.AreEqual(m.Bypass, b.Bypass); + CollectionAssert.AreEqual(m.Handle, b.Handle); + Assert.AreEqual("p", b.Remark["en"]); + } + + [TestMethod] + public void TunMode_RoundTrip() + { + var b = RoundTrip(new TunMode { Bypass = { "1.1.1.0/24" }, Handle = { "0.0.0.0/0" } }); + CollectionAssert.AreEqual(new[] { "1.1.1.0/24" }, b.Bypass); + CollectionAssert.AreEqual(new[] { "0.0.0.0/0" }, b.Handle); + } + + [TestMethod] + public void ShareMode_RoundTrip() => Assert.AreEqual("--preset x", RoundTrip(new ShareMode { Argument = "--preset x" }).Argument); + + [TestMethod] + public void WebMode_RoundTrip() => Assert.AreEqual(";10.*", RoundTrip(new WebMode { Bypass = ";10.*" }).Bypass); + + [TestMethod] + public void SampleWebModeFile_Loads() + { + var dir = new DirectoryInfo(System.AppContext.BaseDirectory); + while (!File.Exists(Path.Combine(dir.FullName, "Storage", "mode", "System Proxy.json"))) + dir = dir.Parent!; + + var m = (WebMode)ModeHelper.LoadMode(Path.Combine(dir.FullName, "Storage", "mode", "System Proxy.json")); + Assert.AreEqual("", m.Bypass); + Assert.IsTrue(m.Remark.ContainsKey("en")); + } + + [TestMethod] + public void Setting_EmptyJson_UsesDefaults() + { + var o = Netrix.Global.NewCustomJsonSerializerOptions(); + o.Converters.Add(new ServerConverterWithTypeDiscriminator()); + o.Converters.Add(new JsonStringEnumConverter()); + var s = JsonSerializer.Deserialize("{}", o); + Assert.IsNotNull(s); + Assert.IsNotNull(s.V2RayConfig); + Assert.IsNotNull(s.Redirector); + Assert.IsNotNull(s.TUNTAP); + } + } +} diff --git a/Tests/PortHelperTests.cs b/Tests/PortHelperTests.cs new file mode 100644 index 0000000..d9a405f --- /dev/null +++ b/Tests/PortHelperTests.cs @@ -0,0 +1,34 @@ +using System; +using System.Collections.Generic; +using System.Diagnostics; +using System.Linq; +using System.Net; +using System.Net.Sockets; +using System.Reflection; +using Microsoft.VisualStudio.TestTools.UnitTesting; + +namespace Tests +{ + [TestClass] + public class PortHelperTests + { + [TestMethod] + public void GetProcessByUsedTcpPort_FindsListener() + { + var listener = new TcpListener(IPAddress.Loopback, 0); + listener.Start(); + try + { + var port = (ushort)((IPEndPoint)listener.LocalEndpoint).Port; + var type = typeof(Netrix.Program).Assembly.GetType("Netrix.Utils.PortHelper")!; + var method = type.GetMethod("GetProcessByUsedTcpPort", BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.Public)!; + var found = (IEnumerable)method.Invoke(null, new object[] { port, AddressFamily.InterNetwork })!; + Assert.IsTrue(found.Any(p => p.Id == Environment.ProcessId)); + } + finally + { + listener.Stop(); + } + } + } +} diff --git a/Tests/ShareLinkTests.cs b/Tests/ShareLinkTests.cs new file mode 100644 index 0000000..d4b829c --- /dev/null +++ b/Tests/ShareLinkTests.cs @@ -0,0 +1,71 @@ +using System; +using System.Linq; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Netrix.Servers; +using Netrix.Utils; + +namespace Tests +{ + [TestClass] + public class ShareLinkTests + { + [TestMethod] + public void Trojan_RoundTrip() + { + var s = new TrojanServer { Hostname = "example.com", Port = 443, Password = "p@ss", Host = "sni.example.com", Remark = "r1" }; + var back = (TrojanServer)ShareLink.ParseText(ShareLink.GetShareLink(s)).Single(); + Assert.AreEqual(s.Hostname, back.Hostname); + Assert.AreEqual(s.Port, back.Port); + Assert.AreEqual(s.Password, back.Password); + Assert.AreEqual(s.Host, back.Host); + Assert.AreEqual(s.Remark, back.Remark); + } + + [TestMethod] + public void Shadowsocks_RoundTrip() + { + var s = new ShadowsocksServer { Hostname = "1.2.3.4", Port = 8388, EncryptMethod = "aes-256-gcm", Password = "pw", Remark = "r2" }; + var back = (ShadowsocksServer)ShareLink.ParseText(ShareLink.GetShareLink(s)).Single(); + Assert.AreEqual(s.Hostname, back.Hostname); + Assert.AreEqual(s.Port, back.Port); + Assert.AreEqual(s.EncryptMethod, back.EncryptMethod); + Assert.AreEqual(s.Password, back.Password); + Assert.AreEqual(s.Remark, back.Remark); + } + + static void RoundTrip(T s, params Func[] props) where T : Netrix.Models.Server + { + var back = (T)ShareLink.ParseText(ShareLink.GetShareLink(s)).Single(); + Assert.AreEqual(s.Hostname, back.Hostname); + Assert.AreEqual(s.Port, back.Port); + Assert.AreEqual(s.Remark, back.Remark); + foreach (var p in props) + Assert.AreEqual(p(s), p(back)); + } + + [TestMethod] + public void SSR_RoundTrip() => + RoundTrip(new ShadowsocksRServer { Hostname = "h.example", Port = 1234, Password = "pw", Protocol = "auth_aes128_md5", OBFS = "tls1.2_ticket_auth", Remark = "r3", ProtocolParam = "pp", OBFSParam = "op" }, + s => s.Password, s => s.EncryptMethod, s => s.Protocol, s => s.OBFS, s => s.ProtocolParam, s => s.OBFSParam); + + [TestMethod] + public void VMess_RoundTrip() => + RoundTrip(new VMessServer { Hostname = "h.example", Port = 443, UserID = "feb54431-301b-52bb-a6dd-e1e93e81bb9e", Remark = "r4" }, + s => s.UserID, s => s.AlterID, s => s.EncryptMethod, s => s.TransferProtocol); + + [TestMethod] + public void VLESS_RoundTrip() => + RoundTrip(new VLESSServer { Hostname = "h.example", Port = 443, UserID = "feb54431-301b-52bb-a6dd-e1e93e81bb9e", Remark = "r5" }, + s => s.UserID, s => s.EncryptMethod, s => s.TransferProtocol); + + [TestMethod] + public void Socks5_RoundTrip() => + RoundTrip(new Socks5Server { Hostname = "127.0.0.1", Port = 1080, Username = "u", Password = "p" }, + s => s.Username, s => s.Password); + + [TestMethod] + public void WireGuard_RoundTrip() => + RoundTrip(new WireGuardServer { Hostname = "h.example", Port = 51820, PrivateKey = "a+b/c=", PeerPublicKey = "d+e/f=", PreSharedKey = "g+h/i=", Remark = "r7" }, + s => s.PrivateKey, s => s.PeerPublicKey, s => s.PreSharedKey, s => s.LocalAddresses, s => s.MTU); + } +} diff --git a/Tests/Tests.csproj b/Tests/Tests.csproj index 767bff3..b1fd9d3 100644 --- a/Tests/Tests.csproj +++ b/Tests/Tests.csproj @@ -1,18 +1,22 @@ - - - - net5.0 - - false - - x64 - - - - - - - - - - + + + + net10.0-windows + + false + + x64 + + + + + + + + + + + + + + diff --git a/Tests/UpdateCheckerTests.cs b/Tests/UpdateCheckerTests.cs new file mode 100644 index 0000000..d437d30 --- /dev/null +++ b/Tests/UpdateCheckerTests.cs @@ -0,0 +1,34 @@ +using System.Collections.Generic; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Netrix.Controllers; +using Netrix.Models.GitHubRelease; + +namespace Tests +{ + [TestClass] + public class UpdateCheckerTests + { + [TestMethod] + public void No_releases_means_no_update_instead_of_throwing() + { + Assert.IsNull(UpdateChecker.GetLatestRelease(new List(), false)); + // only a pre-release exists and pre-releases are not wanted + Assert.IsNull(UpdateChecker.GetLatestRelease(new List { new() { tag_name = "2.0.1-beta", prerelease = true } }, false)); + } + + [TestMethod] + public void Tag_with_v_prefix_is_a_version() + { + Assert.IsTrue(Netrix.Models.GitHubRelease.VersionUtil.CompareVersion("v2.0.1", "2.0.0") > 0); + Assert.IsTrue(Netrix.Models.GitHubRelease.VersionUtil.CompareVersion("v2.0.0", "2.0.0") == 0); + Assert.IsTrue(Netrix.Models.GitHubRelease.VersionUtil.CompareVersion("2.0.0", "v2.1.0") < 0); + } + + [TestMethod] + public void Picks_highest_version() + { + var releases = new List { new() { tag_name = "2.0.0" }, new() { tag_name = "2.1.0" }, new() { tag_name = "1.9.9" } }; + Assert.AreEqual("2.1.0", UpdateChecker.GetLatestRelease(releases, false)!.tag_name); + } + } +} diff --git a/Tests/UpdateSignatureTests.cs b/Tests/UpdateSignatureTests.cs new file mode 100644 index 0000000..0870ff4 --- /dev/null +++ b/Tests/UpdateSignatureTests.cs @@ -0,0 +1,63 @@ +using System; +using System.IO; +using System.Security.Cryptography; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Netrix.Services; + +namespace Tests +{ + [TestClass] + public class UpdateSignatureTests + { + private static (string Public, Func Sign) NewKey() + { + var key = ECDsa.Create(ECCurve.NamedCurves.nistP256); + return (Convert.ToBase64String(key.ExportSubjectPublicKeyInfo()), + file => Convert.ToBase64String(key.SignData(File.ReadAllBytes(file), HashAlgorithmName.SHA256, DSASignatureFormat.IeeeP1363FixedFieldConcatenation))); + } + + private static string Archive(string content) + { + var file = Path.GetTempFileName(); + File.WriteAllText(file, content); + return file; + } + + [TestMethod] + public void Valid_signature_passes() + { + var (pub, sign) = NewKey(); + var file = Archive("release"); + Assert.IsTrue(UpdateSignature.Verify(file, sign(file) + "\n", pub)); + } + + [TestMethod] + public void Tampered_file_fails() + { + var (pub, sign) = NewKey(); + var file = Archive("release"); + var sig = sign(file); + File.WriteAllText(file, "release with malware"); + Assert.IsFalse(UpdateSignature.Verify(file, sig, pub)); + } + + [TestMethod] + public void Signature_from_another_key_fails() + { + var (pub, _) = NewKey(); + var (_, otherSign) = NewKey(); + var file = Archive("release"); + Assert.IsFalse(UpdateSignature.Verify(file, otherSign(file), pub)); + } + + [TestMethod] + public void Garbage_signature_fails_instead_of_throwing() + { + var (pub, _) = NewKey(); + var file = Archive("release"); + Assert.IsFalse(UpdateSignature.Verify(file, "not base64!", pub)); + Assert.IsFalse(UpdateSignature.Verify(file, "", pub)); + Assert.IsFalse(UpdateSignature.Verify(file, Convert.ToBase64String(new byte[64]), pub)); + } + } +} diff --git a/Tests/UpdaterTests.cs b/Tests/UpdaterTests.cs new file mode 100644 index 0000000..a7baf57 --- /dev/null +++ b/Tests/UpdaterTests.cs @@ -0,0 +1,64 @@ +using System; +using System.IO; +using System.IO.Compression; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Netrix.Models; +using Netrix.Services; + +namespace Tests +{ + [TestClass] + public class UpdaterTests + { + private static string NewDir() + { + var d = Path.Combine(Path.GetTempPath(), "netrix-upd-" + Guid.NewGuid()); + Directory.CreateDirectory(d); + return d; + } + + private static string MakeZip(string dir, params (string name, string content)[] files) + { + var zip = Path.Combine(dir, "update.zip"); + using var za = ZipFile.Open(zip, ZipArchiveMode.Create); + foreach (var (name, content) in files) + { + using var w = new StreamWriter(za.CreateEntry("Netrix/" + name).Open()); + w.Write(content); + } + + return zip; + } + + [TestMethod] + public void Apply_ReplacesFiles() + { + var work = NewDir(); + var install = NewDir(); + File.WriteAllText(Path.Combine(install, "Netrix.exe"), "old"); + var zip = MakeZip(work, ("Netrix.exe", "new")); + + new Updater(zip, install).ApplyUpdate(); + + Assert.AreEqual("new", File.ReadAllText(Path.Combine(install, "Netrix.exe"))); + } + + [TestMethod] + public void Apply_FailsHalfway_RestoresOldFiles() + { + var work = NewDir(); + var install = NewDir(); + File.WriteAllText(Path.Combine(install, "Netrix.exe"), "old-exe"); + File.WriteAllText(Path.Combine(install, "a.dll"), "old-a"); + // a directory where the update wants a file: moving that file over it fails after Netrix.exe was already replaced + Directory.CreateDirectory(Path.Combine(install, "zzz.dll")); + var zip = MakeZip(work, ("Netrix.exe", "new-exe"), ("a.dll", "new-a"), ("zzz.dll", "new-z")); + + Assert.ThrowsExactly(() => new Updater(zip, install).ApplyUpdate()); + + Assert.AreEqual("old-exe", File.ReadAllText(Path.Combine(install, "Netrix.exe"))); + Assert.AreEqual("old-a", File.ReadAllText(Path.Combine(install, "a.dll"))); + Assert.AreEqual(0, Directory.GetFiles(install, "*.old", SearchOption.AllDirectories).Length); + } + } +} diff --git a/Tests/WebUtilTests.cs b/Tests/WebUtilTests.cs new file mode 100644 index 0000000..807350f --- /dev/null +++ b/Tests/WebUtilTests.cs @@ -0,0 +1,114 @@ +using System; +using System.IO; +using System.Net; +using System.Net.Http; +using System.Threading.Tasks; +using Microsoft.VisualStudio.TestTools.UnitTesting; +using Netrix.Utils; + +namespace Tests +{ + [TestClass] + public class WebUtilTests + { + private static (HttpListener, string) Serve(Action handler) + { + var port = new Random().Next(20000, 40000); + var l = new HttpListener(); + l.Prefixes.Add($"http://127.0.0.1:{port}/"); + l.Start(); + _ = Task.Run(async () => + { + while (l.IsListening) + { + try { handler(await l.GetContextAsync()); } catch { } + } + }); + return (l, $"http://127.0.0.1:{port}/"); + } + + [TestMethod] + public async Task String_SendsUserAgentAndReturnsBody() + { + var (l, url) = Serve(c => + { + var b = System.Text.Encoding.UTF8.GetBytes(c.Request.UserAgent ?? ""); + c.Response.OutputStream.Write(b, 0, b.Length); + c.Response.Close(); + }); + try + { + var (code, body) = await WebUtil.DownloadStringAsync(WebUtil.CreateRequest(url, 5000, "my-agent")); + Assert.AreEqual(HttpStatusCode.OK, code); + Assert.AreEqual("my-agent", body); + (_, body) = await WebUtil.DownloadStringAsync(WebUtil.CreateRequest(url, 5000)); + Assert.AreEqual(WebUtil.DefaultUserAgent, body); + } + finally { l.Stop(); } + } + + [TestMethod] + public async Task String_NotFound_Throws() + { + var (l, url) = Serve(c => { c.Response.StatusCode = 404; c.Response.Close(); }); + try + { + await Assert.ThrowsExactlyAsync(() => WebUtil.DownloadStringAsync(WebUtil.CreateRequest(url, 5000))); + } + finally { l.Stop(); } + } + + [TestMethod] + public async Task String_Timeout_Throws() + { + var (l, url) = Serve(c => System.Threading.Thread.Sleep(3000)); + try + { + await Assert.ThrowsExactlyAsync(() => WebUtil.DownloadStringAsync(WebUtil.CreateRequest(url, 300))); + } + finally { l.Stop(); } + } + + [TestMethod] + public async Task File_WritesBodyAndReports100() + { + var (l, url) = Serve(c => + { + var b = new byte[100_000]; + c.Response.ContentLength64 = b.Length; + c.Response.OutputStream.Write(b, 0, b.Length); + c.Response.Close(); + }); + var path = Path.GetTempFileName(); + try + { + var last = -1; + await WebUtil.DownloadFileAsync(WebUtil.CreateRequest(url, 5000), path, new Progress(p => last = p)); + Assert.AreEqual(100_000, new FileInfo(path).Length); + await Task.Delay(100); + Assert.AreEqual(100, last); + } + finally { l.Stop(); File.Delete(path); } + } + + [TestMethod] + public async Task String_ThroughProxy_HitsProxy() + { + var hit = false; + var (proxy, proxyUrl) = Serve(c => + { + hit = true; + var b = System.Text.Encoding.UTF8.GetBytes("via-proxy"); + c.Response.OutputStream.Write(b, 0, b.Length); + c.Response.Close(); + }); + try + { + var (_, body) = await WebUtil.DownloadStringAsync(WebUtil.CreateRequest("http://example.invalid/x", 5000), proxyServer: proxyUrl); + Assert.IsTrue(hit); + Assert.AreEqual("via-proxy", body); + } + finally { proxy.Stop(); } + } + } +} diff --git a/build.ps1 b/build.ps1 index 4819a29..fb8ace4 100644 --- a/build.ps1 +++ b/build.ps1 @@ -1,106 +1,126 @@ -param ( - [Parameter()] - [ValidateSet('Debug', 'Release')] - [string] - $Configuration = 'Release', - - [Parameter()] - [ValidateNotNullOrEmpty()] - [string] - $OutputPath = 'release', - - [Parameter()] - [bool] - $SelfContained = $True, - - [Parameter()] - [bool] - $PublishSingleFile = $True, - - [Parameter()] - [bool] - $PublishReadyToRun = $False -) - -Push-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -if ( Test-Path -Path $OutputPath ) { - rm -Recurse -Force $OutputPath -} -New-Item -ItemType Directory -Name $OutputPath | Out-Null - -Push-Location $OutputPath -New-Item -ItemType Directory -Name 'bin' | Out-Null -cp -Recurse -Force '..\Storage\i18n' '.' | Out-Null -cp -Recurse -Force '..\Storage\mode' '.' | Out-Null -cp -Recurse -Force '..\Storage\stun.txt' 'bin' | Out-Null -cp -Recurse -Force '..\Storage\nfdriver.sys' 'bin' | Out-Null -cp -Recurse -Force '..\Storage\aiodns.conf' 'bin' | Out-Null -Invoke-WebRequest -Uri 'https://raw.githubusercontent.com/Loyalsoldier/geoip/release/Country.mmdb' -OutFile 'bin\GeoLite2-Country.mmdb' -#cp -Recurse -Force '..\Storage\GeoLite2-Country.mmdb' 'bin' | Out-Null -cp -Recurse -Force '..\Storage\tun2socks.bin' 'bin' | Out-Null -cp -Recurse -Force '..\Storage\README.md' 'bin' | Out-Null -Pop-Location - -if ( -Not ( Test-Path '.\Other\release' ) ) { - .\Other\build.ps1 - if ( -Not $? ) { - exit $lastExitCode - } -} -cp -Force '.\Other\release\*.bin' "$OutputPath\bin" -cp -Force '.\Other\release\*.dll' "$OutputPath\bin" -cp -Force '.\Other\release\*.exe' "$OutputPath\bin" - -if ( -Not ( Test-Path ".\Netch\bin\$Configuration" ) ) { - Write-Host - Write-Host 'Building Netch' - - dotnet publish ` - -c $Configuration ` - -r 'win-x64' ` - -p:Platform='x64' ` - -p:SelfContained=$SelfContained ` - -p:PublishTrimmed=$PublishReadyToRun ` - -p:PublishSingleFile=$PublishSingleFile ` - -p:PublishReadyToRun=$PublishReadyToRun ` - -p:PublishReadyToRunShowWarnings=$PublishReadyToRun ` - -p:IncludeNativeLibrariesForSelfExtract=$SelfContained ` - -o ".\Netch\bin\$Configuration" ` - '.\Netch\Netch.csproj' - if ( -Not $? ) { exit $lastExitCode } -} -cp -Force ".\Netch\bin\$Configuration\Netch.exe" $OutputPath - -if ( -Not ( Test-Path ".\Redirector\bin\$Configuration" ) ) { - Write-Host - Write-Host 'Building Redirector' - - msbuild ` - -property:Configuration=$Configuration ` - -property:Platform=x64 ` - '.\Redirector\Redirector.vcxproj' - if ( -Not $? ) { exit $lastExitCode } -} -cp -Force ".\Redirector\bin\$Configuration\nfapi.dll" "$OutputPath\bin" -cp -Force ".\Redirector\bin\$Configuration\Redirector.bin" "$OutputPath\bin" - -if ( -Not ( Test-Path ".\RouteHelper\bin\$Configuration" ) ) { - Write-Host - Write-Host 'Building RouteHelper' - - msbuild ` - -property:Configuration=$Configuration ` - -property:Platform=x64 ` - '.\RouteHelper\RouteHelper.vcxproj' - if ( -Not $? ) { exit $lastExitCode } -} -cp -Force ".\RouteHelper\bin\$Configuration\RouteHelper.bin" "$OutputPath\bin" - -if ( $Configuration.Equals('Release') ) { - rm -Force "$OutputPath\*.pdb" - rm -Force "$OutputPath\*.xml" -} - -Pop-Location -exit 0 +param ( + [Parameter()] + [ValidateSet('Debug', 'Release')] + [string] + $Configuration = 'Release', + + # default: .build\dev, or .build\release with -Release + [Parameter()] + [string] + $OutputPath = '', + + # build into .build\release (what CI packages) instead of .build\dev + [Parameter()] + [switch] + $Release, + + [Parameter()] + [bool] + $SelfContained = $True, + + [Parameter()] + [bool] + $PublishSingleFile = $True, + + [Parameter()] + [bool] + $PublishReadyToRun = $False, + + # empty = whatever the .vcxproj says (v143, VS 2022); pass v145 on a machine that only has Visual Studio 2026 + [Parameter()] + [string] + $PlatformToolset = '' +) + +Push-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) + +$root = (Get-Location).Path +if ( -Not $OutputPath ) { $OutputPath = if ( $Release ) { '.build\release' } else { '.build\dev' } } + +$toolsetArgs = @() +if ( $PlatformToolset ) { $toolsetArgs = @("-property:PlatformToolset=$PlatformToolset") } + +# keep data\ (settings, when Netrix runs from the output folder); everything else is replaced +if ( Test-Path -Path $OutputPath ) { + Get-ChildItem $OutputPath -Force -Exclude 'data' | Remove-Item -Recurse -Force +} else { + New-Item -ItemType Directory -Force -Path $OutputPath | Out-Null +} + +Push-Location $OutputPath +New-Item -ItemType Directory -Name 'bin' | Out-Null +cp -Recurse -Force "$root\Storage\i18n" '.' | Out-Null +cp -Recurse -Force "$root\Storage\mode" '.' | Out-Null +cp -Recurse -Force "$root\Storage\stun.txt" 'bin' | Out-Null +cp -Recurse -Force "$root\Storage\nfdriver.sys" 'bin' | Out-Null +cp -Recurse -Force "$root\Storage\aiodns.conf" 'bin' | Out-Null +Invoke-WebRequest -Uri 'https://raw.githubusercontent.com/Loyalsoldier/geoip/release/Country.mmdb' -ErrorAction Stop -OutFile 'bin\GeoLite2-Country.mmdb' +#cp -Recurse -Force "$root\Storage\GeoLite2-Country.mmdb" 'bin' | Out-Null +cp -Recurse -Force "$root\Storage\tun2socks.bin" 'bin' | Out-Null +cp -Recurse -Force "$root\Storage\README.md" 'bin' | Out-Null +Pop-Location + +if ( -Not ( Test-Path '.\Other\release' ) ) { + .\Other\build.ps1 + if ( -Not $? ) { + exit $lastExitCode + } +} +cp -Force '.\Other\release\*.bin' "$OutputPath\bin" +cp -Force '.\Other\release\*.dll' "$OutputPath\bin" +cp -Force '.\Other\release\*.exe' "$OutputPath\bin" + +if ( -Not ( Test-Path ".\Netrix\bin\$Configuration" ) ) { + Write-Host + Write-Host 'Building Netrix' + + dotnet publish ` + -c $Configuration ` + -r 'win-x64' ` + -p:Platform='x64' ` + -p:SelfContained=$SelfContained ` + -p:PublishTrimmed=$PublishReadyToRun ` + -p:PublishSingleFile=$PublishSingleFile ` + -p:PublishReadyToRun=$PublishReadyToRun ` + -p:PublishReadyToRunShowWarnings=$PublishReadyToRun ` + -p:IncludeNativeLibrariesForSelfExtract=$SelfContained ` + -o ".\Netrix\bin\$Configuration" ` + '.\Netrix\Netrix.csproj' + if ( -Not $? ) { exit $lastExitCode } +} +cp -Force ".\Netrix\bin\$Configuration\Netrix.exe" $OutputPath + +if ( -Not ( Test-Path ".\Redirector\bin\$Configuration" ) ) { + Write-Host + Write-Host 'Building Redirector' + + msbuild ` + -property:Configuration=$Configuration ` + -property:Platform=x64 ` + @toolsetArgs ` + '.\Redirector\Redirector.vcxproj' + if ( -Not $? ) { exit $lastExitCode } +} +cp -Force ".\Redirector\bin\$Configuration\nfapi.dll" "$OutputPath\bin" +cp -Force ".\Redirector\bin\$Configuration\Redirector.bin" "$OutputPath\bin" + +if ( -Not ( Test-Path ".\RouteHelper\bin\$Configuration" ) ) { + Write-Host + Write-Host 'Building RouteHelper' + + msbuild ` + -property:Configuration=$Configuration ` + -property:Platform=x64 ` + @toolsetArgs ` + '.\RouteHelper\RouteHelper.vcxproj' + if ( -Not $? ) { exit $lastExitCode } +} +cp -Force ".\RouteHelper\bin\$Configuration\RouteHelper.bin" "$OutputPath\bin" + +if ( $Configuration.Equals('Release') ) { + rm -Force "$OutputPath\*.pdb" + rm -Force "$OutputPath\*.xml" +} + +Pop-Location +exit 0 diff --git a/clean.ps1 b/clean.ps1 index dee6c25..4dea88f 100644 --- a/clean.ps1 +++ b/clean.ps1 @@ -1,36 +1,32 @@ -Push-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) - -function Delete { - param ( - [string] - $Path - ) - - if (Test-Path $Path) { - rm -Recurse -Force $Path | Out-Null - } -} - -Delete '.vs' -Delete 'release' -Delete 'Netch\bin' -Delete 'Netch\obj' -Delete 'Tests\bin' -Delete 'Tests\obj' -Delete 'TestResults' -Delete 'Redirector\bin' -Delete 'Redirector\obj' -Delete 'RedirectorTester\bin' -Delete 'RedirectorTester\obj' -Delete 'RouteHelper\bin' -Delete 'RouteHelper\obj' - -Delete 'Netch\*.csproj.user' -Delete 'Redirector\*.vcxproj.user' -Delete 'RedirectorTester\*.csproj.user' -Delete 'RouteHelper\*.vcxproj.user' - -.\other\clean.ps1 - -Pop-Location +Push-Location (Split-Path $MyInvocation.MyCommand.Path -Parent) + +function Delete { + param ( + [string] + $Path + ) + + if (Test-Path $Path) { + rm -Recurse -Force $Path | Out-Null + } +} + +Delete '.vs' +Delete 'Netrix\bin' +Delete 'Netrix\obj' +Delete 'Tests\bin' +Delete 'Tests\obj' +Delete 'TestResults' +Delete 'Redirector\bin' +Delete 'Redirector\obj' +Delete 'RouteHelper\bin' +Delete 'RouteHelper\obj' + +Delete 'Netrix\*.csproj.user' +Delete 'Redirector\*.vcxproj.user' +Delete 'RouteHelper\*.vcxproj.user' + +.\other\clean.ps1 + +Pop-Location exit $lastExitCode \ No newline at end of file diff --git a/common.props b/common.props index 2d142ed..b112615 100644 --- a/common.props +++ b/common.props @@ -1,6 +1,6 @@ - net6.0-windows + net10.0-windows win-x64 x64 latest diff --git a/global.json b/global.json index 4031a8c..76d8581 100644 --- a/global.json +++ b/global.json @@ -1,5 +1,6 @@ { "sdk": { + "rollForward": "latestFeature", "allowPrerelease": false } } \ No newline at end of file diff --git a/jetbrains.svg b/jetbrains.svg deleted file mode 100644 index e02b559..0000000 --- a/jetbrains.svg +++ /dev/null @@ -1,43 +0,0 @@ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - diff --git a/sha256.ps1 b/sha256.ps1 deleted file mode 100644 index 6402f2b..0000000 --- a/sha256.ps1 +++ /dev/null @@ -1,32 +0,0 @@ -param ( - [string] - $Location = '' -) - -Push-Location $Location - -$global:data = '' -function Scan { - param ( - [string] - $path = '' - ) - - foreach ( $item in ( Get-ChildItem -Path $path -File ) ) { - $name = $item.Name - - $global:data += (Get-FileHash -Path ".\$path\$name" -Algorithm SHA256).Hash.ToLower() - } - - foreach ( $item in ( Get-ChildItem -Path $path -Directory ) ) { - $name = $item.Name - - Scan -Path ".\$path\$name" - } -} - -Scan -Path '.' -Write-Output (Get-FileHash -InputStream ([System.IO.MemoryStream]::New([System.Text.Encoding]::UTF8.GetBytes($data)))).Hash.ToLower() - -Pop-Location -exit 0 \ No newline at end of file diff --git a/sign.ps1 b/sign.ps1 new file mode 100644 index 0000000..4ee14b3 --- /dev/null +++ b/sign.ps1 @@ -0,0 +1,27 @@ +# Signs an update archive for the in-app updater (Netrix/Services/UpdateSignature.cs verifies it). +# .\sign.ps1 -GenerateKey make a key pair: prints the public key, writes the private key to update-signing.key +# .\sign.ps1 -File Netrix.7z writes Netrix.7z.sig; private key from $Env:UPDATE_SIGNING_KEY (base64 PKCS#8) +# ECDSA P-256 + SHA-256, IEEE P1363 signature, base64. Keep the private key in the GitHub secret UPDATE_SIGNING_KEY only. +param ( + [string]$File, + [switch]$GenerateKey +) + +$ErrorActionPreference = 'Stop' +$ecdsa = [Security.Cryptography.ECDsa]::Create() + +if ( $GenerateKey ) { + $ecdsa.GenerateKey([Security.Cryptography.ECCurve]::CreateFromFriendlyName('nistP256')) + [IO.File]::WriteAllText("$PWD\update-signing.key", [Convert]::ToBase64String($ecdsa.ExportPkcs8PrivateKey())) + Write-Host 'Public key (put it in UpdateSignature.PublicKey):' + Write-Host ([Convert]::ToBase64String($ecdsa.ExportSubjectPublicKeyInfo())) + Write-Host 'Private key written to update-signing.key: add it as the secret UPDATE_SIGNING_KEY, then delete the file.' + exit 0 +} + +if ( -Not $File -or -Not $Env:UPDATE_SIGNING_KEY ) { throw 'Usage: UPDATE_SIGNING_KEY= .\sign.ps1 -File ' } + +[void]$ecdsa.ImportPkcs8PrivateKey([Convert]::FromBase64String($Env:UPDATE_SIGNING_KEY), [ref]$null) +$sig = $ecdsa.SignData([IO.File]::ReadAllBytes((Resolve-Path $File)), [Security.Cryptography.HashAlgorithmName]::SHA256, [Security.Cryptography.DSASignatureFormat]::IeeeP1363FixedFieldConcatenation) +[IO.File]::WriteAllText("$File.sig", [Convert]::ToBase64String($sig)) +Write-Host "Signed $File"