fix: remove unsafe Bluetooth D-Bus exposure

bluetooth1/bluetooth_ifc.go

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2022 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -291,6 +291,8 @@ func (b *Bluetooth) FeedPasskey(device dbus.ObjectPath, accept bool, passkey uin
 	return nil
 }
 
+// DebugInfo is retained for D-Bus compatibility. The system service returns
+// an empty snapshot so this proxy cannot expose adapter or device details.
 func (b *Bluetooth) DebugInfo() (info string, busErr *dbus.Error) {
 	logger.Info("dbus call DebugInfo")
 

system/bluetooth1/bluetooth_ifc.go

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2022 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -373,9 +373,11 @@ func (b *SysBluetooth) UnregisterAgent(sender dbus.Sender, agentPath dbus.Object
 	return nil
 }
 
+// DebugInfo is retained for D-Bus compatibility but no longer exposes
+// adapter or device details.
 func (b *SysBluetooth) DebugInfo() (info string, busErr *dbus.Error) {
-	info = fmt.Sprintf("adapters: %s\ndevices: %s", marshalJSON(b.adapters), marshalJSON(b.devices))
-	return info, nil
+	logger.Debug("dbus call DebugInfo")
+	return "", nil
 }
 
 // ClearUnpairedDevice will remove all device in unpaired list

system/bluetooth1/bluetooth_ifc_test.go

@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: 2026 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package bluetooth
+
+import "testing"
+
+func TestDebugInfoDoesNotExposeBluetoothDetails(t *testing.T) {
+	b := &SysBluetooth{}
+
+	info, err := b.DebugInfo()
+	if err != nil {
+		t.Fatalf("DebugInfo returned an unexpected error: %v", err)
+	}
+	if want := ""; info != want {
+		t.Fatalf("DebugInfo returned %q, want %q", info, want)
+	}
+}