Add error can be sent from cloud to display in api

api/api.go

@@ -49,11 +49,18 @@ type PeerStatus struct {
 	HolepunchConnected bool          `json:"holepunchConnected"`
 }
 
+// OlmError holds error information from registration failures
+type OlmError struct {
+	Code    string `json:"code"`
+	Message string `json:"message"`
+}
+
 // StatusResponse is returned by the status endpoint
 type StatusResponse struct {
 	Connected       bool                    `json:"connected"`
 	Registered      bool                    `json:"registered"`
 	Terminated      bool                    `json:"terminated"`
+	OlmError        *OlmError               `json:"error,omitempty"`
 	Version         string                  `json:"version,omitempty"`
 	Agent           string                  `json:"agent,omitempty"`
 	OrgID           string                  `json:"orgId,omitempty"`
@@ -85,6 +92,7 @@ type API struct {
 	isConnected  bool
 	isRegistered bool
 	isTerminated bool
+	olmError     *OlmError
 
 	version string
 	agent   string
@@ -260,6 +268,27 @@ func (s *API) SetRegistered(registered bool) {
 	s.statusMu.Lock()
 	defer s.statusMu.Unlock()
 	s.isRegistered = registered
+	// Clear any registration error when successfully registered
+	if registered {
+		s.olmError = nil
+	}
+}
+
+// SetOlmError sets the registration error
+func (s *API) SetOlmError(code string, message string) {
+	s.statusMu.Lock()
+	defer s.statusMu.Unlock()
+	s.olmError = &OlmError{
+		Code:    code,
+		Message: message,
+	}
+}
+
+// ClearOlmError clears any registration error
+func (s *API) ClearOlmError() {
+	s.statusMu.Lock()
+	defer s.statusMu.Unlock()
+	s.olmError = nil
 }
 
 func (s *API) SetTerminated(terminated bool) {
@@ -387,6 +416,7 @@ func (s *API) handleStatus(w http.ResponseWriter, r *http.Request) {
 		Connected:       s.isConnected,
 		Registered:      s.isRegistered,
 		Terminated:      s.isTerminated,
+		OlmError:        s.olmError,
 		Version:         s.version,
 		Agent:           s.agent,
 		OrgID:           s.orgID,
@@ -553,6 +583,7 @@ func (s *API) GetStatus() StatusResponse {
 		Connected:       s.isConnected,
 		Registered:      s.isRegistered,
 		Terminated:      s.isTerminated,
+		OlmError:        s.olmError,
 		Version:         s.version,
 		Agent:           s.agent,
 		OrgID:           s.orgID,

olm/connect.go

@@ -19,6 +19,12 @@ import (
 	"golang.zx2c4.com/wireguard/tun"
 )
 
+// OlmErrorData represents the error data sent from the server
+type OlmErrorData struct {
+	Code    string `json:"code"`
+	Message string `json:"message"`
+}
+
 func (o *Olm) handleConnect(msg websocket.WSMessage) {
 	logger.Debug("Received message: %v", msg.Data)
 
@@ -206,11 +212,39 @@ func (o *Olm) handleConnect(msg websocket.WSMessage) {
 	logger.Info("WireGuard device created.")
 }
 
+func (o *Olm) handleOlmError(msg websocket.WSMessage) {
+	logger.Debug("Received olm error message: %v", msg.Data)
+
+	var errorData OlmErrorData
+
+	jsonData, err := json.Marshal(msg.Data)
+	if err != nil {
+		logger.Error("Error marshaling olm error data: %v", err)
+		return
+	}
+
+	if err := json.Unmarshal(jsonData, &errorData); err != nil {
+		logger.Error("Error unmarshaling olm error data: %v", err)
+		return
+	}
+
+	logger.Error("Olm error (code: %s): %s", errorData.Code, errorData.Message)
+
+	// Set the olm error in the API server so it can be exposed via status
+	o.apiServer.SetOlmError(errorData.Code, errorData.Message)
+
+	// Invoke onOlmError callback if configured
+	if o.olmConfig.OnOlmError != nil {
+		go o.olmConfig.OnOlmError(errorData.Code, errorData.Message)
+	}
+}
+
 func (o *Olm) handleTerminate(msg websocket.WSMessage) {
 	logger.Info("Received terminate message")
 	o.apiServer.SetTerminated(true)
 	o.apiServer.SetConnectionStatus(false)
 	o.apiServer.SetRegistered(false)
+	o.apiServer.ClearOlmError()
 	o.apiServer.ClearPeerStatuses()
 
 	network.ClearNetworkSettings()

olm/olm.go

@@ -337,6 +337,7 @@ func (o *Olm) StartTunnel(config TunnelConfig) {
 
 	// Handlers for managing connection status
 	o.websocket.RegisterHandler("olm/wg/connect", o.handleConnect)
+	o.websocket.RegisterHandler("olm/error", o.handleOlmError)
 	o.websocket.RegisterHandler("olm/terminate", o.handleTerminate)
 
 	// Handlers for managing peers
@@ -427,6 +428,7 @@ func (o *Olm) StartTunnel(config TunnelConfig) {
 		o.apiServer.SetTerminated(true)
 		o.apiServer.SetConnectionStatus(false)
 		o.apiServer.SetRegistered(false)
+		o.apiServer.ClearOlmError()
 		o.apiServer.ClearPeerStatuses()
 		network.ClearNetworkSettings()
 
@@ -597,6 +599,7 @@ func (o *Olm) StopTunnel() error {
 	// Update API server status
 	o.apiServer.SetConnectionStatus(false)
 	o.apiServer.SetRegistered(false)
+	o.apiServer.ClearOlmError()
 
 	network.ClearNetworkSettings()
 	o.apiServer.ClearPeerStatuses()

olm/types.go

@@ -46,6 +46,7 @@ type OlmConfig struct {
 	OnConnected  func()
 	OnTerminated func()
 	OnAuthError  func(statusCode int, message string) // Called when auth fails (401/403)
+	OnOlmError   func(code string, message string)    // Called when registration fails
 	OnExit       func()                               // Called when exit is requested via API
 }