Improve the authentication workflow (#18)

GPClient/gpclient.cpp

@@ -243,6 +243,7 @@ void GPClient::portalLogin()
     connect(portalAuth, &PortalAuthenticator::success, this, &GPClient::onPortalSuccess);
     // Prelogin failed on the portal interface, try to treat the portal as a gateway interface
     connect(portalAuth, &PortalAuthenticator::preloginFailed, this, &GPClient::onPortalPreloginFail);
+    connect(portalAuth, &PortalAuthenticator::portalConfigFailed, this, &GPClient::onPortalConfigFail);
     // Portal login failed
     connect(portalAuth, &PortalAuthenticator::fail, this, &GPClient::onPortalFail);
 
@@ -251,21 +252,49 @@ void GPClient::portalLogin()
     portalAuth->authenticate();
 }
 
-void GPClient::onPortalSuccess(const PortalConfigResponse portalConfig, const GPGateway gateway, QList<GPGateway> allGateways)
+void GPClient::onPortalSuccess(const PortalConfigResponse portalConfig, const QString region)
 {
     PLOGI << "Portal authentication succeeded.";
 
-    this->portalConfig = portalConfig;
+    // No gateway found in protal configuration
+    if (portalConfig.allGateways().size() == 0) {
+        PLOGI << "No gateway found in portal configuration, treat the portal address as a gateway.";
+        tryGatewayLogin();
+        return;
+    }
 
-    setAllGateways(allGateways);
+    GPGateway gateway = filterPreferredGateway(portalConfig.allGateways(), region);
+    setAllGateways(portalConfig.allGateways());
     setCurrentGateway(gateway);
+    this->portalConfig = portalConfig;
 
     gatewayLogin();
 }
 
-void GPClient::onPortalPreloginFail()
+void GPClient::onPortalPreloginFail(const QString msg)
 {
-    PLOGI << "Portal prelogin failed, try to preform login on the the gateway interface...";
+    PLOGI << "Portal prelogin failed: " << msg;
+    tryGatewayLogin();
+}
+
+void GPClient::onPortalConfigFail(const QString msg)
+{
+    PLOGI << "Failed to get the portal configuration, " << msg << " Treat the portal address as gateway.";
+    tryGatewayLogin();
+}
+
+void GPClient::onPortalFail(const QString &msg)
+{
+    if (!msg.isEmpty()) {
+        openMessageBox("Portal authentication failed.", msg);
+    }
+
+    updateConnectionStatus(VpnStatus::disconnected);
+}
+
+void GPClient::tryGatewayLogin()
+{
+    PLOGI << "Try to preform login on the the gateway interface...";
 
     // Treat the portal input as the gateway address
     GPGateway g;
@@ -281,15 +310,6 @@ void GPClient::onPortalPreloginFail()
     gatewayLogin();
 }
 
-void GPClient::onPortalFail(const QString &msg)
-{
-    if (!msg.isEmpty()) {
-        openMessageBox("Portal authentication failed.", msg);
-    }
-
-    updateConnectionStatus(VpnStatus::disconnected);
-}
-
 // Login to the gateway
 void GPClient::gatewayLogin()
 {

GPClient/gpclient.h

@@ -30,8 +30,9 @@ private slots:
     void onSystemTrayActivated(QSystemTrayIcon::ActivationReason reason);
     void onGatewayChanged(QAction *action);
 
-    void onPortalSuccess(const PortalConfigResponse portalConfig, const GPGateway gateway, QList<GPGateway> allGateways);
+    void onPortalSuccess(const PortalConfigResponse portalConfig, const QString region);
-    void onPortalPreloginFail();
+    void onPortalPreloginFail(const QString msg);
+    void onPortalConfigFail(const QString msg);
     void onPortalFail(const QString &msg);
 
     void onGatewaySuccess(const QString &authCookie);
@@ -72,6 +73,7 @@ private:
 
     void doConnect();
     void portalLogin();
+    void tryGatewayLogin();
     void gatewayLogin();
 
     QString portal() const;

GPClient/portalauthenticator.cpp

@@ -57,7 +57,7 @@ void PortalAuthenticator::onPreloginFinished()
         tryAutoLogin();
     } else {
         PLOGE << QString("Unknown prelogin response for %1 got %2").arg(preloginUrl).arg(QString::fromUtf8(preloginResponse.rawResponse()));
-        emitFail("Unknown response for portal prelogin interface.");
+        emit preloginFailed("Unknown response for portal prelogin interface.");
     }
 
     delete reply;
@@ -175,7 +175,7 @@ void PortalAuthenticator::onFetchConfigFinished()
             isAutoLogin = false;
             normalAuth();
         } else {
-            emitFail("Failed to fetch the portal config.");
+            emit portalConfigFailed("Failed to fetch the portal config.");
         }
         return;
     }
@@ -197,7 +197,7 @@ void PortalAuthenticator::onFetchConfigFinished()
         normalLoginWindow->close();
     }
 
-    emit success(response, filterPreferredGateway(response.allGateways(), preloginResponse.region()), response.allGateways());
+    emit success(response, preloginResponse.region());
 }
 
 void PortalAuthenticator::emitFail(const QString& msg)

GPClient/portalauthenticator.h

@@ -18,9 +18,10 @@ public:
     void authenticate();
 
 signals:
-    void success(const PortalConfigResponse, const GPGateway, QList<GPGateway> allGateways);
+    void success(const PortalConfigResponse response, const QString region);
     void fail(const QString& msg);
     void preloginFailed(const QString& msg);
+    void portalConfigFailed(const QString msg);
 
 private slots:
     void onPreloginFinished();

GPClient/portalconfigresponse.cpp

@@ -132,7 +132,7 @@ QString PortalConfigResponse::prelogonUserAuthCookie() const
     return _prelogonAuthCookie;
 }
 
-QList<GPGateway> PortalConfigResponse::allGateways()
+QList<GPGateway> PortalConfigResponse::allGateways() const
 {
     return _gateways;
 }

GPClient/portalconfigresponse.h

@@ -20,7 +20,7 @@ public:
     QString password() const;
     QString userAuthCookie() const;
     QString prelogonUserAuthCookie() const;
-    QList<GPGateway> allGateways();
+    QList<GPGateway> allGateways() const;
     void setAllGateways(QList<GPGateway> gateways);
 
     void setUsername(const QString username);