tunnel: auto-detect IPv6/IPv4 preference

Detect IP address change.
Request non-VPN network.
Update endpoint when needed.
Unregister network on wgTurnOff and use IPv4 if network is not known.

2 files changed, 32 insertions, 0 deletions

diff --git a/tunnel/tools/libwg-go/api-android.go b/tunnel/tools/libwg-go/api-android.go
index fd0142e1..0ab80be9 100644
--- a/tunnel/tools/libwg-go/api-android.go
+++ b/tunnel/tools/libwg-go/api-android.go
@@ -53,6 +53,11 @@ type TunnelHandle struct {
 
 var tunnelHandles map[int32]TunnelHandle
 
+func GetTunnel(handle int32) (tunnelHandle TunnelHandle, ok bool) {
+	tunnelHandle, ok = tunnelHandles[handle]
+	return
+}
+
 func init() {
 	tunnelHandles = make(map[int32]TunnelHandle)
 	signals := make(chan os.Signal)
diff --git a/tunnel/tools/libwg-go/service.go b/tunnel/tools/libwg-go/service.go
index 37fb4b40..1f2e629c 100644
--- a/tunnel/tools/libwg-go/service.go
+++ b/tunnel/tools/libwg-go/service.go
@@ -217,3 +217,30 @@ func (e *LibwgServiceImpl) Reverse(stream gen.Libwg_ReverseServer) error {
 	e.logger.Verbosef("Reverse returns")
 	return nil
 }
+
+func (e *LibwgServiceImpl) IpcSet(ctx context.Context, req *gen.IpcSetRequest) (*gen.IpcSetResponse, error) {
+	tunnel, ok := GetTunnel(req.GetTunnel().GetHandle())
+	if !ok {
+		r := &gen.IpcSetResponse{
+			Error: &gen.Error{
+				Message: fmt.Sprintf("Invalid tunnel"),
+			},
+		}
+		return r, nil
+	}
+
+	err := tunnel.device.IpcSet(req.GetConfig())
+	if err != nil {
+		r := &gen.IpcSetResponse{
+			Error: &gen.Error{
+				Message: fmt.Sprintf("IpcSet failed: %v", err),
+			},
+		}
+		return r, nil
+	}
+
+	r := &gen.IpcSetResponse{
+	}
+
+	return r, nil
+}