Add timeout for starting google account pairing

commands.go

@@ -160,6 +160,7 @@ func fnLoginGoogle(ce *WrappedCommandEvent) {
 
 const (
 	pairingErrMsgNoDevices       = "No devices found. Make sure you've enabled account pairing in the Google Messages app on your phone."
+	pairingErrPhoneNotResponding = "Phone not responding. Make sure your phone is connected to the internet and that account pairing is enabled in the Google Messages app."
 	pairingErrMsgIncorrectEmoji  = "Incorrect emoji chosen on phone, please try again"
 	pairingErrMsgCancelled       = "Pairing cancelled on phone"
 	pairingErrMsgTimeout         = "Pairing timed out, please try again"
@@ -194,6 +195,8 @@ func fnLoginGoogleCookies(ce *WrappedCommandEvent) {
 	if err != nil {
 		if errors.Is(err, libgm.ErrNoDevicesFound) {
 			ce.Reply(pairingErrMsgNoDevices)
+		} else if errors.Is(err, libgm.ErrPairingInitTimeout) {
+			ce.Reply(pairingErrPhoneNotResponding)
 		} else if errors.Is(err, libgm.ErrIncorrectEmoji) {
 			ce.Reply(pairingErrMsgIncorrectEmoji)
 		} else if errors.Is(err, libgm.ErrPairingCancelled) {

libgm/pair_google.go

@@ -33,6 +33,7 @@ import (
 	"time"
 
 	"github.com/google/uuid"
+	"github.com/rs/zerolog"
 	"go.mau.fi/util/random"
 	"golang.org/x/crypto/hkdf"
 	"google.golang.org/protobuf/proto"
@@ -242,8 +243,11 @@ var (
 	ErrIncorrectEmoji     = errors.New("user chose incorrect emoji on phone")
 	ErrPairingCancelled   = errors.New("user cancelled pairing on phone")
 	ErrPairingTimeout     = errors.New("pairing timed out")
+	ErrPairingInitTimeout = errors.New("client init timed out")
 )
 
+const GaiaInitTimeout = 15 * time.Second
+
 func (c *Client) DoGaiaPairing(ctx context.Context, emojiCallback func(string)) error {
 	if len(c.AuthData.Cookies) == 0 {
 		return ErrNoCookies
@@ -277,12 +281,25 @@ func (c *Client) DoGaiaPairing(ctx context.Context, emojiCallback func(string))
 	if err != nil {
 		return fmt.Errorf("failed to prepare pairing payloads: %w", err)
 	}
-	serverInit, err := c.sendGaiaPairingMessage(ctx, ps, gmproto.ActionType_CREATE_GAIA_PAIRING_CLIENT_INIT, clientInit)
+	initCtx, cancel := context.WithTimeout(ctx, GaiaInitTimeout)
+	serverInit, err := c.sendGaiaPairingMessage(initCtx, ps, gmproto.ActionType_CREATE_GAIA_PAIRING_CLIENT_INIT, clientInit)
+	cancel()
 	if err != nil {
+		cancelErr := c.cancelGaiaPairing(ps)
+		if cancelErr != nil {
+			zerolog.Ctx(ctx).Warn().Err(err).Msg("Failed to send gaia pairing cancel request after init timeout")
+		}
+		if errors.Is(err, context.DeadlineExceeded) {
+			return ErrPairingInitTimeout
+		}
 		return fmt.Errorf("failed to send client init: %w", err)
 	}
 	pairingEmoji, err := ps.ProcessServerInit(serverInit)
 	if err != nil {
+		cancelErr := c.cancelGaiaPairing(ps)
+		if cancelErr != nil {
+			zerolog.Ctx(ctx).Warn().Err(err).Msg("Failed to send gaia pairing cancel request after error processing server init")
+		}
 		return fmt.Errorf("error processing server init: %w", err)
 	}
 	emojiCallback(pairingEmoji)
@@ -317,6 +334,16 @@ func (c *Client) DoGaiaPairing(ctx context.Context, emojiCallback func(string))
 	return nil
 }
 
+func (c *Client) cancelGaiaPairing(sess PairingSession) error {
+	return c.sessionHandler.sendMessageNoResponse(SendMessageParams{
+		Action:      gmproto.ActionType_CANCEL_GAIA_PAIRING,
+		RequestID:   sess.UUID.String(),
+		DontEncrypt: true,
+		CustomTTL:   (300 * time.Second).Microseconds(),
+		MessageType: gmproto.MessageType_GAIA_2,
+	})
+}
+
 func (c *Client) sendGaiaPairingMessage(ctx context.Context, sess PairingSession, action gmproto.ActionType, msg []byte) (*gmproto.GaiaPairingResponseContainer, error) {
 	respCh, err := c.sessionHandler.sendAsyncMessage(SendMessageParams{
 		Action: action,

provisioning.go

@@ -356,6 +356,11 @@ func (prov *ProvisioningAPI) GoogleLoginStart(w http.ResponseWriter, r *http.Req
 				Error:   pairingErrMsgNoDevices,
 				ErrCode: "no-devices-found",
 			})
+		case errors.Is(err, libgm.ErrPairingInitTimeout):
+			jsonResponse(w, http.StatusBadRequest, Error{
+				Error:   pairingErrPhoneNotResponding,
+				ErrCode: "timeout",
+			})
 		default:
 			jsonResponse(w, http.StatusInternalServerError, Error{
 				Error:   "Failed to start login",