Code refactor, support multiple gateways and non-SAML authentication (#9)

* Code refactor

* Update README.md

.gitmodules

@@ -1,3 +1,7 @@
 [submodule "singleapplication"]
 	path = singleapplication
 	url = https://github.com/itay-grudev/SingleApplication.git
+
+[submodule "plog"]
+	path = plog
+	url = https://github.com/SergiusTheBest/plog.git

GPClient/GPClient.pro

@@ -15,6 +15,8 @@ DEFINES += QAPPLICATION_CLASS=QApplication
 # deprecated API in order to know how to port your code away from it.
 DEFINES += QT_DEPRECATED_WARNINGS
 
+INCLUDEPATH += ../plog/include
+
 # You can also make your code fail to compile if it uses deprecated APIs.
 # In order to do so, uncomment the following line.
 # You can also select to disable deprecated APIs only up to a certain version of Qt.
@@ -23,7 +25,15 @@ SOURCES += \
     cdpcommand.cpp \
     cdpcommandmanager.cpp \
     enhancedwebview.cpp \
+    gatewayauthenticator.cpp \
+    gpgateway.cpp \
+    gphelper.cpp \
+    loginparams.cpp \
     main.cpp \
+    normalloginwindow.cpp \
+    portalauthenticator.cpp \
+    portalconfigresponse.cpp \
+    preloginresponse.cpp \
     samlloginwindow.cpp \
     gpclient.cpp
 
@@ -31,11 +41,20 @@ HEADERS += \
     cdpcommand.h \
     cdpcommandmanager.h \
     enhancedwebview.h \
+    gatewayauthenticator.h \
+    gpgateway.h \
+    gphelper.h \
+    loginparams.h \
+    normalloginwindow.h \
+    portalauthenticator.h \
+    portalconfigresponse.h \
+    preloginresponse.h \
     samlloginwindow.h \
     gpclient.h
 
 FORMS += \
-    gpclient.ui
+    gpclient.ui \
+    normalloginwindow.ui
 
 DBUS_INTERFACES += ../GPService/gpservice.xml
 

GPClient/cdpcommandmanager.cpp

@@ -1,5 +1,6 @@
 #include "cdpcommandmanager.h"
 #include <QVariantMap>
+#include <plog/Log.h>
 
 CDPCommandManager::CDPCommandManager(QObject *parent)
     : QObject(parent)
@@ -27,7 +28,7 @@ void CDPCommandManager::initialize(QString endpoint)
         reply, &QNetworkReply::finished,
         [reply, this]() {
             if (reply->error()) {
-                qDebug() << "CDP request error";
+                PLOGE << "CDP request error";
                 return;
             }
 
@@ -76,10 +77,10 @@ void CDPCommandManager::onTextMessageReceived(QString message)
 
 void CDPCommandManager::onSocketDisconnected()
 {
-    qDebug() << "WebSocket disconnected";
+    PLOGI << "WebSocket disconnected";
 }
 
 void CDPCommandManager::onSocketError(QAbstractSocket::SocketError error)
 {
-    qDebug() << "WebSocket error" << error;
+    PLOGE << "WebSocket error" << error;
 }

GPClient/gatewayauthenticator.cpp

@@ -0,0 +1,160 @@
+#include "gatewayauthenticator.h"
+#include "gphelper.h"
+#include "loginparams.h"
+#include "preloginresponse.h"
+
+#include <QNetworkReply>
+#include <plog/Log.h>
+
+using namespace gpclient::helper;
+
+GatewayAuthenticator::GatewayAuthenticator(const QString& gateway, const PortalConfigResponse& portalConfig)
+    : QObject()
+    , preloginUrl("https://" + gateway + "/ssl-vpn/prelogin.esp")
+    , loginUrl("https://" + gateway + "/ssl-vpn/login.esp")
+    , portalConfig(portalConfig)
+{
+}
+
+GatewayAuthenticator::~GatewayAuthenticator()
+{
+    delete normalLoginWindow;
+}
+
+void GatewayAuthenticator::authenticate()
+{
+    LoginParams params;
+    params.setUser(portalConfig.username());
+    params.setPassword(portalConfig.password());
+    params.setUserAuthCookie(portalConfig.userAuthCookie());
+
+    login(params);
+}
+
+void GatewayAuthenticator::login(const LoginParams &params)
+{
+    PLOGI << "Trying to login the gateway at " << loginUrl << " with " << params.toUtf8();
+
+    QNetworkReply *reply = createRequest(loginUrl, params.toUtf8());
+    connect(reply, &QNetworkReply::finished, this, &GatewayAuthenticator::onLoginFinished);
+}
+
+void GatewayAuthenticator::onLoginFinished()
+{
+    QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
+
+    if (reply->error()) {
+        PLOGE << QString("Failed to login the gateway at %1, %2").arg(loginUrl).arg(reply->errorString());
+
+        if (normalLoginWindow) {
+            normalLoginWindow->setProcessing(false);
+            openMessageBox("Gateway login failed.", "Please check your credentials and try again.");
+        } else {
+            doAuth();
+        }
+        return;
+    }
+
+    if (normalLoginWindow) {
+        normalLoginWindow->close();
+    }
+
+    const QUrlQuery params = gpclient::helper::parseGatewayResponse(reply->readAll());
+    emit success(params.toString());
+}
+
+void GatewayAuthenticator::doAuth()
+{
+    PLOGI << "Perform the gateway prelogin at " << preloginUrl;
+
+    QNetworkReply *reply = createRequest(preloginUrl);
+    connect(reply, &QNetworkReply::finished, this, &GatewayAuthenticator::onPreloginFinished);
+}
+
+void GatewayAuthenticator::onPreloginFinished()
+{
+    QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
+
+    if (reply->error()) {
+        PLOGE << QString("Failed to prelogin the gateway at %1, %2").arg(preloginUrl).arg(reply->errorString());
+
+        emit fail("Error occurred on the gateway prelogin interface.");
+        return;
+    }
+
+    PLOGI << "Gateway prelogin succeeded.";
+
+    PreloginResponse response = PreloginResponse::parse(reply->readAll());
+
+    if (response.hasSamlAuthFields()) {
+        samlAuth(response.samlMethod(), response.samlRequest(), reply->url().toString());
+    } else if (response.hasNormalAuthFields()) {
+        normalAuth(response.labelUsername(), response.labelPassword(), response.authMessage());
+    } else {
+        PLOGE << QString("Unknown prelogin response for %1, got %2").arg(preloginUrl).arg(QString::fromUtf8(response.rawResponse()));
+        emit fail("Unknown response for gateway prelogin interface.");
+    }
+
+    delete reply;
+}
+
+void GatewayAuthenticator::normalAuth(QString labelUsername, QString labelPassword, QString authMessage)
+{
+    PLOGI << QString("Trying to perform the normal login with %1 / %2 credentials").arg(labelUsername).arg(labelPassword);
+
+    normalLoginWindow = new NormalLoginWindow;
+    normalLoginWindow->setPortalAddress(gateway);
+    normalLoginWindow->setAuthMessage(authMessage);
+    normalLoginWindow->setUsernameLabel(labelUsername);
+    normalLoginWindow->setPasswordLabel(labelPassword);
+
+    // Do login
+    connect(normalLoginWindow, &NormalLoginWindow::performLogin, this, &GatewayAuthenticator::onPerformNormalLogin);
+    connect(normalLoginWindow, &NormalLoginWindow::rejected, this, &GatewayAuthenticator::onLoginWindowRejected);
+
+    normalLoginWindow->exec();
+    delete normalLoginWindow;
+    normalLoginWindow = nullptr;
+}
+
+void GatewayAuthenticator::onPerformNormalLogin(const QString &username, const QString &password)
+{
+    normalLoginWindow->setProcessing(true);
+    LoginParams params;
+    params.setUser(username);
+    params.setPassword(password);
+    login(params);
+}
+
+void GatewayAuthenticator::onLoginWindowRejected()
+{
+    emit fail();
+}
+
+void GatewayAuthenticator::samlAuth(QString samlMethod, QString samlRequest, QString preloginUrl)
+{
+    PLOGI << "Trying to perform SAML login with saml-method " << samlMethod;
+
+    SAMLLoginWindow *loginWindow = samlLogin(samlMethod, samlRequest, preloginUrl);
+
+    if (!loginWindow) {
+        openMessageBox("SAML Login failed for gateway");
+        return;
+    }
+
+    connect(loginWindow, &SAMLLoginWindow::success, this, &GatewayAuthenticator::onSAMLLoginFinished);
+    connect(loginWindow, &SAMLLoginWindow::rejected, this, &GatewayAuthenticator::onLoginWindowRejected);
+//    loginWindow->exec();
+//    delete loginWindow;
+}
+
+void GatewayAuthenticator::onSAMLLoginFinished(const QMap<QString, QString> &samlResult)
+{
+    PLOGI << "SAML login succeeded, got the prelogin cookie " << samlResult.value("preloginCookie");
+
+    LoginParams params;
+    params.setUser(samlResult.value("username"));
+    params.setPreloginCookie(samlResult.value("preloginCookie"));
+
+    login(params);
+}

GPClient/gatewayauthenticator.h

@@ -0,0 +1,44 @@
+#ifndef GATEWAYAUTHENTICATOR_H
+#define GATEWAYAUTHENTICATOR_H
+
+#include "portalconfigresponse.h"
+#include "normalloginwindow.h"
+#include "loginparams.h"
+#include <QObject>
+
+class GatewayAuthenticator : public QObject
+{
+    Q_OBJECT
+public:
+    explicit GatewayAuthenticator(const QString& gateway, const PortalConfigResponse& portalConfig);
+    ~GatewayAuthenticator();
+
+    void authenticate();
+
+signals:
+    void success(const QString& authCookie);
+    void fail(const QString& msg = "");
+
+private slots:
+    void onLoginFinished();
+    void onPreloginFinished();
+    void onPerformNormalLogin(const QString &username, const QString &password);
+    void onSAMLLoginFinished(const QMap<QString, QString> &samlResult);
+    void onLoginWindowRejected();
+
+private:
+    QString gateway;
+    QString preloginUrl;
+    QString loginUrl;
+
+    const PortalConfigResponse& portalConfig;
+
+    NormalLoginWindow *normalLoginWindow{nullptr};
+
+    void login(const LoginParams& params);
+    void doAuth();
+    void normalAuth(QString labelUsername, QString labelPassword, QString authMessage);
+    void samlAuth(QString samlMethod, QString samlRequest, QString preloginUrl = "");
+};
+
+#endif // GATEWAYAUTHENTICATOR_H

GPClient/gpclient.cpp

@@ -1,224 +1,262 @@
 #include "gpclient.h"
+#include "gphelper.h"
 #include "ui_gpclient.h"
-#include "samlloginwindow.h"
+#include "portalauthenticator.h"
+#include "gatewayauthenticator.h"
 
-#include <QDesktopWidget>
-#include <QGraphicsScene>
-#include <QGraphicsView>
-#include <QGraphicsPixmapItem>
-#include <QImage>
-#include <QStyle>
-#include <QMessageBox>
+#include <plog/Log.h>
+#include <QIcon>
+
+using namespace gpclient::helper;
 
 GPClient::GPClient(QWidget *parent)
     : QMainWindow(parent)
     , ui(new Ui::GPClient)
+    , systemTrayIcon(new QSystemTrayIcon(parent))
+    , contextMenu(new QMenu("GlobalProtect", parent))
 {
     ui->setupUi(this);
+    setWindowTitle("GlobalProtect");
     setFixedSize(width(), height());
-    moveCenter();
+    gpclient::helper::moveCenter(this);
 
     // Restore portal from the previous settings
-    settings = new QSettings("com.yuezk.qt", "GPClient");
-    ui->portalInput->setText(settings->value("portal", "").toString());
-
-    QObject::connect(this, &GPClient::connectFailed, [this]() {
-        updateConnectionStatus("not_connected");
-    });
-
-    // QNetworkAccessManager setup
-    networkManager = new QNetworkAccessManager(this);
+    ui->portalInput->setText(settings::get("portal", "").toString());
 
     // DBus service setup
     vpn = new com::yuezk::qt::GPService("com.yuezk.qt.GPService", "/", QDBusConnection::systemBus(), this);
-    QObject::connect(vpn, &com::yuezk::qt::GPService::connected, this, &GPClient::onVPNConnected);
-    QObject::connect(vpn, &com::yuezk::qt::GPService::disconnected, this, &GPClient::onVPNDisconnected);
-    QObject::connect(vpn, &com::yuezk::qt::GPService::logAvailable, this, &GPClient::onVPNLogAvailable);
+    connect(vpn, &com::yuezk::qt::GPService::connected, this, &GPClient::onVPNConnected);
+    connect(vpn, &com::yuezk::qt::GPService::disconnected, this, &GPClient::onVPNDisconnected);
+    connect(vpn, &com::yuezk::qt::GPService::logAvailable, this, &GPClient::onVPNLogAvailable);
+
+    connect(systemTrayIcon, &QSystemTrayIcon::activated, this, &GPClient::onSystemTrayActivated);
+
+    // Initiallize the context menu of system tray.
+    openAction = contextMenu->addAction(QIcon::fromTheme("system-run"), "Open", this, &GPClient::activiate);
+    connectAction = contextMenu->addAction(QIcon::fromTheme("preferences-system-network"), "Connect", this, &GPClient::doConnect);
+    contextMenu->addSeparator();
+    quitAction = contextMenu->addAction(QIcon::fromTheme("application-exit"), "Quit", this, &GPClient::quit);
+    systemTrayIcon->setContextMenu(contextMenu);
+    systemTrayIcon->setToolTip("GlobalProtect");
 
     initVpnStatus();
+    systemTrayIcon->show();
 }
 
 GPClient::~GPClient()
 {
     delete ui;
-    delete networkManager;
-    delete reply;
     delete vpn;
-    delete settings;
+    delete systemTrayIcon;
+    delete openAction;
+    delete connectAction;
+    delete quitAction;
+    delete contextMenu;
 }
 
 void GPClient::on_connectButton_clicked()
 {
-    QString btnText = ui->connectButton->text();
-
-    if (btnText.endsWith("Connect")) {
-        QString portal = ui->portalInput->text();
-        settings->setValue("portal", portal);
-        ui->statusLabel->setText("Authenticating...");
-        updateConnectionStatus("pending");
-        doAuth(portal);
-    } else if (btnText.endsWith("Cancel")) {
-        ui->statusLabel->setText("Canceling...");
-        updateConnectionStatus("pending");
-
-        if (reply->isRunning()) {
-            reply->abort();
-        }
-        vpn->disconnect();
-    } else {
-        ui->statusLabel->setText("Disconnecting...");
-        updateConnectionStatus("pending");
-        vpn->disconnect();
-    }
+    doConnect();
 }
 
-void GPClient::preloginResultFinished()
+void GPClient::on_portalInput_returnPressed()
 {
-    QNetworkReply::NetworkError err = reply->error();
-    if (err) {
-        qWarning() << "Prelogin request error: " << err;
-        emit connectFailed();
-        return;
+    doConnect();
 }
 
-    QByteArray xmlBytes = reply->readAll();
-    const QString tagMethod = "saml-auth-method";
-    const QString tagRequest = "saml-request";
-    QString samlMethod;
-    QString samlRequest;
-
-    QXmlStreamReader xml(xmlBytes);
-    while (!xml.atEnd()) {
-        xml.readNext();
-        if (xml.tokenType() == xml.StartElement) {
-            if (xml.name() == tagMethod) {
-                samlMethod = xml.readElementText();
-            } else if (xml.name() == tagRequest) {
-                samlRequest = QByteArray::fromBase64(QByteArray::fromStdString(xml.readElementText().toStdString()));
-            }
-        }
-    }
-
-    if (samlMethod == nullptr || samlRequest == nullptr) {
-        qWarning("This does not appear to be a SAML prelogin response (<saml-auth-method> or <saml-request> tags missing)");
-        emit connectFailed();
-        return;
-    }
-
-    if (samlMethod == "POST") {
-        samlLogin(reply->url().toString(), samlRequest);
-    } else if (samlMethod == "REDIRECT") {
-        samlLogin(samlRequest);
-    }
-}
-
-void GPClient::onLoginSuccess(QJsonObject loginResult)
+void GPClient::updateConnectionStatus(const GPClient::VpnStatus &status)
 {
-    QString fullpath = "/ssl-vpn/login.esp";
-    QString shortpath = "gateway";
-    QString user = loginResult.value("saml-username").toString();
-    QString cookieName;
-    QString cookieValue;
-    QString cookies[]{"prelogin-cookie", "portal-userauthcookie"};
-
-    for (int i = 0; i < cookies->length(); i++) {
-        cookieValue = loginResult.value(cookies[i]).toString();
-        if (cookieValue != nullptr) {
-            cookieName = cookies[i];
-            break;
-        }
-    }
-
-    QString host = QString("https://%1/%2:%3").arg(loginResult.value("server").toString(), shortpath, cookieName);
-    vpn->connect(host, user, cookieValue);
-    ui->statusLabel->setText("Connecting...");
-    updateConnectionStatus("pending");
-}
-
-void GPClient::updateConnectionStatus(QString status)
-{
-    if (status == "not_connected") {
+    switch (status) {
+        case VpnStatus::disconnected:
             ui->statusLabel->setText("Not Connected");
             ui->statusImage->setStyleSheet("image: url(:/images/not_connected.png); padding: 15;");
             ui->connectButton->setText("Connect");
             ui->connectButton->setDisabled(false);
-    } else if (status == "pending") {
+            ui->portalInput->setReadOnly(false);
+
+            systemTrayIcon->setIcon(QIcon{ ":/images/not_connected.png" });
+            connectAction->setEnabled(true);
+            connectAction->setText("Connect");
+            break;
+        case VpnStatus::pending:
             ui->statusImage->setStyleSheet("image: url(:/images/pending.png); padding: 15;");
-        ui->connectButton->setText("Cancel");
-        ui->connectButton->setDisabled(false);
-    } else if (status == "connected") {
+            ui->connectButton->setDisabled(true);
+            ui->portalInput->setReadOnly(true);
+
+            systemTrayIcon->setIcon(QIcon{ ":/images/pending.png" });
+            connectAction->setEnabled(false);
+            break;
+        case VpnStatus::connected:
             ui->statusLabel->setText("Connected");
             ui->statusImage->setStyleSheet("image: url(:/images/connected.png); padding: 15;");
             ui->connectButton->setText("Disconnect");
             ui->connectButton->setDisabled(false);
+            ui->portalInput->setReadOnly(true);
+
+            systemTrayIcon->setIcon(QIcon{ ":/images/connected.png" });
+            connectAction->setEnabled(true);
+            connectAction->setText("Disconnect");
+            break;
+        default:
+            break;
     }
 }
 
 void GPClient::onVPNConnected()
 {
-    updateConnectionStatus("connected");
+    updateConnectionStatus(VpnStatus::connected);
 }
 
 void GPClient::onVPNDisconnected()
 {
-    updateConnectionStatus("not_connected");
+    updateConnectionStatus(VpnStatus::disconnected);
 }
 
 void GPClient::onVPNLogAvailable(QString log)
 {
-    qInfo() << log;
+    PLOGI << log;
+}
+
+void GPClient::onSystemTrayActivated(QSystemTrayIcon::ActivationReason reason)
+{
+    switch (reason) {
+        case QSystemTrayIcon::Trigger:
+        case QSystemTrayIcon::DoubleClick:
+            this->activiate();
+            break;
+        default:
+            break;
+    }
+}
+
+void GPClient::activiate()
+{
+    activateWindow();
+    showNormal();
+}
+
+QString GPClient::portal() const
+{
+    const QString input = ui->portalInput->text().trimmed();
+
+    if (input.startsWith("http")) {
+        return QUrl(input).authority();
+    }
+    return input;
 }
 
 void GPClient::initVpnStatus() {
     int status = vpn->status();
+
     if (status == 1) {
         ui->statusLabel->setText("Connecting...");
-        updateConnectionStatus("pending");
+        updateConnectionStatus(VpnStatus::pending);
     } else if (status == 2) {
-        updateConnectionStatus("connected");
+        updateConnectionStatus(VpnStatus::connected);
     } else if (status == 3) {
         ui->statusLabel->setText("Disconnecting...");
-        updateConnectionStatus("pending");
+        updateConnectionStatus(VpnStatus::pending);
+    } else {
+        updateConnectionStatus(VpnStatus::disconnected);
     }
 }
 
-void GPClient::moveCenter()
+void GPClient::doConnect()
 {
-    QDesktopWidget *desktop = QApplication::desktop();
+    const QString btnText = ui->connectButton->text();
+    const QString portal = this->portal();
 
-    int screenWidth, width;
-    int screenHeight, height;
-    int x, y;
-    QSize windowSize;
-
-    screenWidth = desktop->width();
-    screenHeight = desktop->height();
-
-    windowSize = size();
-    width = windowSize.width();
-    height = windowSize.height();
-
-    x = (screenWidth - width) / 2;
-    y = (screenHeight - height) / 2;
-    y -= 50;
-    move(x, y);
+    if (portal.isEmpty()) {
+        activiate();
+        return;
     }
 
-void GPClient::doAuth(const QString portal)
+    if (btnText.endsWith("Connect")) {
+        settings::save("portal", portal);
+        ui->statusLabel->setText("Authenticating...");
+        updateConnectionStatus(VpnStatus::pending);
+
+        // Perform the portal login
+        portalLogin(portal);
+    } else {
+        ui->statusLabel->setText("Disconnecting...");
+        updateConnectionStatus(VpnStatus::pending);
+
+        vpn->disconnect();
+    }
+}
+
+// Login to the portal interface to get the portal config and preferred gateway
+void GPClient::portalLogin(const QString& portal)
 {
-    const QString preloginUrl = "https://" + portal + "/ssl-vpn/prelogin.esp";
-    reply = networkManager->post(QNetworkRequest(preloginUrl), (QByteArray) nullptr);
-    connect(reply, &QNetworkReply::finished, this, &GPClient::preloginResultFinished);
+    PortalAuthenticator *portalAuth = new PortalAuthenticator(portal);
+
+    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);
+    // Portal login failed
+    connect(portalAuth, &PortalAuthenticator::fail, this, &GPClient::onPortalFail);
+
+    portalAuth->authenticate();
 }
 
-void GPClient::samlLogin(const QString loginUrl, const QString html)
+void GPClient::onPortalSuccess(const PortalConfigResponse &portalConfig, const GPGateway &gateway)
 {
-    SAMLLoginWindow *loginWindow = new SAMLLoginWindow(this);
+    this->portalConfig = portalConfig;
+    this->gateway = gateway;
 
-    QObject::connect(loginWindow, &SAMLLoginWindow::success, this, &GPClient::onLoginSuccess);
-    QObject::connect(loginWindow, &SAMLLoginWindow::rejected, this, &GPClient::connectFailed);
-
-    loginWindow->login(loginUrl, html);
-    loginWindow->exec();
-    delete loginWindow;
+    gatewayLogin();
+}
+
+void GPClient::onPortalPreloginFail()
+{
+    PLOGI << "Portal prelogin failed, try to preform login on the the gateway interface...";
+
+    // Set the gateway address to portal input
+    gateway.setAddress(portal());
+    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() const
+{
+    GatewayAuthenticator *gatewayAuth = new GatewayAuthenticator(gateway.address(), portalConfig);
+
+    connect(gatewayAuth, &GatewayAuthenticator::success, this, &GPClient::onGatewaySuccess);
+    connect(gatewayAuth, &GatewayAuthenticator::fail, this, &GPClient::onGatewayFail);
+
+    gatewayAuth->authenticate();
+}
+
+void GPClient::quit()
+{
+    vpn->disconnect();
+    QApplication::quit();
+}
+
+void GPClient::onGatewaySuccess(const QString &authCookie)
+{
+    PLOGI << "Gateway login succeeded, got the cookie " << authCookie;
+
+    vpn->connect(gateway.address(), portalConfig.username(), authCookie);
+    ui->statusLabel->setText("Connecting...");
+    updateConnectionStatus(VpnStatus::pending);
+}
+
+void GPClient::onGatewayFail(const QString &msg)
+{
+    if (!msg.isEmpty()) {
+        openMessageBox("Portal authentication failed.", msg);
+    }
+
+    updateConnectionStatus(VpnStatus::disconnected);
 }

GPClient/gpclient.h

@@ -2,9 +2,11 @@
 #define GPCLIENT_H
 
 #include "gpservice_interface.h"
+#include "portalconfigresponse.h"
+
 #include <QMainWindow>
-#include <QNetworkAccessManager>
-#include <QNetworkReply>
+#include <QSystemTrayIcon>
+#include <QMenu>
 
 QT_BEGIN_NAMESPACE
 namespace Ui { class GPClient; }
@@ -17,31 +19,53 @@ class GPClient : public QMainWindow
 public:
     GPClient(QWidget *parent = nullptr);
     ~GPClient();
-
-signals:
-    void connectFailed();
+    void activiate();
 
 private slots:
     void on_connectButton_clicked();
-    void preloginResultFinished();
+    void on_portalInput_returnPressed();
 
-    void onLoginSuccess(QJsonObject loginResult);
+    void onPortalSuccess(const PortalConfigResponse &portalConfig, const GPGateway &gateway);
+    void onPortalPreloginFail();
+    void onPortalFail(const QString &msg);
+    void onGatewaySuccess(const QString &authCookie);
+    void onGatewayFail(const QString &msg);
 
     void onVPNConnected();
     void onVPNDisconnected();
     void onVPNLogAvailable(QString log);
 
+    void onSystemTrayActivated(QSystemTrayIcon::ActivationReason reason);
+
 private:
+    enum class VpnStatus
+    {
+        disconnected,
+        pending,
+        connected
+    };
+
     Ui::GPClient *ui;
-    QNetworkAccessManager *networkManager;
-    QNetworkReply *reply;
     com::yuezk::qt::GPService *vpn;
-    QSettings *settings;
+
+    QSystemTrayIcon *systemTrayIcon;
+    QMenu *contextMenu;
+    QAction *openAction;
+    QAction *connectAction;
+    QAction *quitAction;
+
+    GPGateway gateway;
+    PortalConfigResponse portalConfig;
+
+    QString portal() const;
 
     void initVpnStatus();
-    void moveCenter();
-    void updateConnectionStatus(QString status);
-    void doAuth(const QString portal);
-    void samlLogin(const QString loginUrl, const QString html = "");
+    void doConnect();
+    void updateConnectionStatus(const VpnStatus &status);
+
+    void portalLogin(const QString& portal);
+    void gatewayLogin() const;
+
+    void quit();
 };
 #endif // GPCLIENT_H

GPClient/gpclient.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>GP VPN Client</string>
+   <string>GlobalProtect OpenConnect</string>
   </property>
   <property name="windowIcon">
    <iconset resource="resources.qrc">
@@ -113,6 +113,12 @@
         <property name="text">
          <string>Connect</string>
         </property>
+        <property name="autoDefault">
+         <bool>true</bool>
+        </property>
+        <property name="default">
+         <bool>false</bool>
+        </property>
        </widget>
       </item>
      </layout>

GPClient/gpgateway.cpp

@@ -0,0 +1,38 @@
+#include "gpgateway.h"
+
+GPGateway::GPGateway()
+{
+}
+
+QString GPGateway::name() const
+{
+    return _name;
+}
+
+QString GPGateway::address() const
+{
+    return _address;
+}
+
+void GPGateway::setName(const QString &name)
+{
+    _name = name;
+}
+
+void GPGateway::setAddress(const QString &address)
+{
+    _address = address;
+}
+
+void GPGateway::setPriorityRules(const QMap<QString, int> &priorityRules)
+{
+    _priorityRules = priorityRules;
+}
+
+int GPGateway::priorityOf(QString ruleName)
+{
+    if (_priorityRules.contains(ruleName)) {
+        return _priorityRules.value(ruleName);
+    }
+    return 0;
+}

GPClient/gpgateway.h

@@ -0,0 +1,26 @@
+#ifndef GPGATEWAY_H
+#define GPGATEWAY_H
+
+#include <QString>
+#include <QMap>
+
+class GPGateway
+{
+public:
+    GPGateway();
+
+    QString name() const;
+    QString address() const;
+
+    void setName(const QString &name);
+    void setAddress(const QString &address);
+    void setPriorityRules(const QMap<QString, int> &priorityRules);
+    int priorityOf(QString ruleName);
+
+private:
+    QString _name;
+    QString _address;
+    QMap<QString, int> _priorityRules;
+};
+
+#endif // GPGATEWAY_H

GPClient/gphelper.cpp

@@ -0,0 +1,118 @@
+#include "gphelper.h"
+#include <QNetworkRequest>
+#include <QXmlStreamReader>
+#include <QMessageBox>
+#include <QDesktopWidget>
+#include <QApplication>
+#include <QWidget>
+#include <plog/Log.h>
+
+QNetworkAccessManager* gpclient::helper::networkManager = new QNetworkAccessManager;
+
+QNetworkReply* gpclient::helper::createRequest(QString url, QByteArray params)
+{
+    QNetworkRequest request(url);
+    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
+    request.setHeader(QNetworkRequest::UserAgentHeader, UA);
+
+    if (params == nullptr) {
+        return networkManager->post(request, QByteArray(nullptr));
+    }
+    return networkManager->post(request, params);
+}
+
+SAMLLoginWindow* gpclient::helper::samlLogin(QString samlMethod, QString samlRequest, QString preloginUrl)
+{
+    SAMLLoginWindow *loginWindow = new SAMLLoginWindow;
+
+    if (samlMethod == "POST") {
+        loginWindow->login(preloginUrl, samlRequest);
+    } else if (samlMethod == "REDIRECT") {
+        loginWindow->login(samlRequest);
+    } else {
+        PLOGE << "Unknown saml-auth-method expected POST or REDIRECT, got " << samlMethod;
+        return nullptr;
+    }
+    return loginWindow;
+}
+
+GPGateway &gpclient::helper::filterPreferredGateway(QList<GPGateway> &gateways, QString ruleName)
+{
+    GPGateway& gateway = gateways.first();
+
+    for (GPGateway& g : gateways) {
+        if (g.priorityOf(ruleName) > gateway.priorityOf(ruleName)) {
+            gateway = g;
+        }
+    }
+
+    return gateway;
+}
+
+QUrlQuery gpclient::helper::parseGatewayResponse(const QByteArray &xml)
+{
+    QXmlStreamReader xmlReader{xml};
+    QList<QString> args;
+
+    while (!xmlReader.atEnd()) {
+        xmlReader.readNextStartElement();
+        if (xmlReader.name() == "argument") {
+            args.append(QUrl::toPercentEncoding(xmlReader.readElementText()));
+        }
+    }
+
+    QUrlQuery params{};
+    params.addQueryItem("authcookie", args.at(1));
+    params.addQueryItem("portal", args.at(3));
+    params.addQueryItem("user", args.at(4));
+    params.addQueryItem("domain", args.at(7));
+    params.addQueryItem("preferred-ip", args.at(15));
+    params.addQueryItem("computer", QUrl::toPercentEncoding(QSysInfo::machineHostName()));
+
+    return params;
+}
+
+void gpclient::helper::openMessageBox(const QString &message, const QString& informativeText)
+{
+    QMessageBox msgBox;
+    msgBox.setWindowTitle("GlobalProtect");
+    msgBox.setText(message);
+    msgBox.setFixedWidth(500);
+    msgBox.setStyleSheet("QLabel{min-width: 250px}");
+    msgBox.setInformativeText(informativeText);
+    msgBox.exec();
+}
+
+void gpclient::helper::moveCenter(QWidget *widget)
+{
+    QDesktopWidget *desktop = QApplication::desktop();
+
+    int screenWidth, width;
+    int screenHeight, height;
+    int x, y;
+    QSize windowSize;
+
+    screenWidth = desktop->width();
+    screenHeight = desktop->height();
+
+    windowSize = widget->size();
+    width = windowSize.width();
+    height = windowSize.height();
+
+    x = (screenWidth - width) / 2;
+    y = (screenHeight - height) / 2;
+    y -= 50;
+    widget->move(x, y);
+}
+
+QSettings *gpclient::helper::settings::_settings = new QSettings("com.yuezk.qt", "GPClient");
+
+QVariant gpclient::helper::settings::get(const QString &key, const QVariant &defaultValue)
+{
+    return _settings->value(key, defaultValue);
+}
+
+void gpclient::helper::settings::save(const QString &key, const QVariant &value)
+{
+    _settings->setValue(key, value);
+}

GPClient/gphelper.h

@@ -0,0 +1,43 @@
+#ifndef GPHELPER_H
+#define GPHELPER_H
+
+#include "samlloginwindow.h"
+#include "gpgateway.h"
+
+#include <QObject>
+#include <QNetworkAccessManager>
+#include <QNetworkRequest>
+#include <QNetworkReply>
+#include <QUrlQuery>
+#include <QSettings>
+
+
+const QString UA = "PAN GlobalProtect";
+
+namespace gpclient {
+    namespace helper {
+        extern QNetworkAccessManager *networkManager;
+
+        QNetworkReply* createRequest(QString url, QByteArray params = nullptr);
+
+        SAMLLoginWindow *samlLogin(QString samlMethod, QString samlRequest, QString preloginUrl);
+
+        GPGateway& filterPreferredGateway(QList<GPGateway> &gateways, QString ruleName);
+
+        QUrlQuery parseGatewayResponse(const QByteArray& xml);
+
+        void openMessageBox(const QString& message, const QString& informativeText = "");
+
+        void moveCenter(QWidget *widget);
+
+        namespace settings {
+
+            extern QSettings *_settings;
+
+            QVariant get(const QString &key, const QVariant &defaultValue = QVariant());
+            void save(const QString &key, const QVariant &value);
+        }
+    }
+}
+
+#endif // GPHELPER_H

GPClient/loginparams.cpp

@@ -0,0 +1,54 @@
+#include "loginparams.h"
+
+#include <QUrlQuery>
+
+LoginParams::LoginParams()
+{
+}
+
+LoginParams::~LoginParams()
+{
+}
+
+void LoginParams::setUser(const QString &user)
+{
+    updateQueryItem("user", user);
+}
+
+void LoginParams::setServer(const QString &server)
+{
+    updateQueryItem("server", server);
+}
+
+void LoginParams::setPassword(const QString &password)
+{
+    updateQueryItem("passwd", password);
+}
+
+void LoginParams::setUserAuthCookie(const QString &cookie)
+{
+    updateQueryItem("portal-userauthcookie", cookie);
+}
+
+void LoginParams::setPrelogonAuthCookie(const QString &cookie)
+{
+    updateQueryItem("portal-prelogonuserauthcookie", cookie);
+}
+
+void LoginParams::setPreloginCookie(const QString &cookie)
+{
+    updateQueryItem("prelogin-cookie", cookie);
+}
+
+QByteArray LoginParams::toUtf8() const
+{
+    return params.toString().toUtf8();
+}
+
+void LoginParams::updateQueryItem(const QString &key, const QString &value)
+{
+    if (params.hasQueryItem(key)) {
+        params.removeQueryItem(key);
+    }
+    params.addQueryItem(key, QUrl::toPercentEncoding(value));
+}

GPClient/loginparams.h

@@ -0,0 +1,44 @@
+#ifndef LOGINPARAMS_H
+#define LOGINPARAMS_H
+
+#include <QUrlQuery>
+
+class LoginParams
+{
+public:
+    LoginParams();
+    ~LoginParams();
+
+    void setUser(const QString &user);
+    void setServer(const QString &server);
+    void setPassword(const QString &password);
+    void setUserAuthCookie(const QString &cookie);
+    void setPrelogonAuthCookie(const QString &cookie);
+    void setPreloginCookie(const QString &cookie);
+
+    QByteArray toUtf8() const;
+
+private:
+    QUrlQuery params {
+        {"prot", QUrl::toPercentEncoding("https:")},
+        {"server", ""},
+        {"inputSrc", ""},
+        {"jnlpReady", "jnlpReady"},
+        {"user", ""},
+        {"passwd", ""},
+        {"computer", QUrl::toPercentEncoding(QSysInfo::machineHostName())},
+        {"ok", "Login"},
+        {"direct", "yes"},
+        {"clientVer", "4100"},
+        {"os-version", QUrl::toPercentEncoding(QSysInfo::prettyProductName())},
+        {"clientos", "Linux"},
+        {"portal-userauthcookie", ""},
+        {"portal-prelogonuserauthcookie", ""},
+        {"prelogin-cookie", ""},
+        {"ipv6-support", "yes"}
+    };
+
+    void updateQueryItem(const QString &key, const QString &value);
+};
+
+#endif // LOGINPARAMS_H

GPClient/main.cpp

@@ -2,17 +2,32 @@
 #include "gpclient.h"
 #include "enhancedwebview.h"
 
+#include <QStandardPaths>
+#include <plog/Log.h>
+#include <plog/Appenders/ColorConsoleAppender.h>
+
 int main(int argc, char *argv[])
 {
+    const QDir path = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + "/GlobalProtect-openconnect";
+    const QString logFile = path.path() + "/gpclient.log";
+    if (!path.exists()) {
+        path.mkpath(".");
+    }
+
+    static plog::ColorConsoleAppender<plog::TxtFormatter> consoleAppender;
+    plog::init(plog::debug, logFile.toUtf8()).addAppender(&consoleAppender);
+
     QString port = QString::fromLocal8Bit(qgetenv(ENV_CDP_PORT));
+
     if (port == "") {
         qputenv(ENV_CDP_PORT, "12315");
     }
+
     SingleApplication app(argc, argv);
     GPClient w;
     w.show();
 
-    QObject::connect(&app, &SingleApplication::instanceStarted, &w, &GPClient::raise);
+    QObject::connect(&app, &SingleApplication::instanceStarted, &w, &GPClient::activiate);
 
     return app.exec();
 }

GPClient/normalloginwindow.cpp

@@ -0,0 +1,62 @@
+#include "normalloginwindow.h"
+#include "ui_normalloginwindow.h"
+
+#include <QCloseEvent>
+
+NormalLoginWindow::NormalLoginWindow(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::NormalLoginWindow)
+{
+    ui->setupUi(this);
+    setFixedSize(width(), height());
+}
+
+NormalLoginWindow::~NormalLoginWindow()
+{
+    delete ui;
+}
+
+void NormalLoginWindow::setAuthMessage(QString message)
+{
+    ui->authMessage->setText(message);
+}
+
+void NormalLoginWindow::setUsernameLabel(QString label)
+{
+    ui->username->setPlaceholderText(label);
+}
+
+void NormalLoginWindow::setPasswordLabel(QString label)
+{
+    ui->password->setPlaceholderText(label);
+}
+
+void NormalLoginWindow::setPortalAddress(QString portal)
+{
+    ui->portalAddress->setText(portal);
+}
+
+void NormalLoginWindow::setProcessing(bool isProcessing)
+{
+    ui->username->setReadOnly(isProcessing);
+    ui->password->setReadOnly(isProcessing);
+    ui->loginButton->setDisabled(isProcessing);
+}
+
+void NormalLoginWindow::on_loginButton_clicked()
+{
+    const QString username = ui->username->text().trimmed();
+    const QString password = ui->password->text().trimmed();
+
+    if (username.isEmpty() || password.isEmpty()) {
+        return;
+    }
+
+    emit performLogin(username, password);
+}
+
+void NormalLoginWindow::closeEvent(QCloseEvent *event)
+{
+    event->accept();
+    reject();
+}

GPClient/normalloginwindow.h

@@ -0,0 +1,37 @@
+#ifndef PORTALAUTHWINDOW_H
+#define PORTALAUTHWINDOW_H
+
+#include <QDialog>
+
+namespace Ui {
+class NormalLoginWindow;
+}
+
+class NormalLoginWindow : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit NormalLoginWindow(QWidget *parent = nullptr);
+    ~NormalLoginWindow();
+
+    void setAuthMessage(QString);
+    void setUsernameLabel(QString);
+    void setPasswordLabel(QString);
+    void setPortalAddress(QString);
+
+    void setProcessing(bool isProcessing);
+
+private slots:
+    void on_loginButton_clicked();
+
+signals:
+    void performLogin(QString username, QString password);
+
+private:
+    Ui::NormalLoginWindow *ui;
+
+    void closeEvent(QCloseEvent *event);
+};
+
+#endif // PORTALAUTHWINDOW_H

GPClient/normalloginwindow.ui

@@ -0,0 +1,148 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>NormalLoginWindow</class>
+ <widget class="QDialog" name="NormalLoginWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>255</width>
+    <height>269</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Preferred" vsizetype="Minimum">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="cursor">
+   <cursorShape>ArrowCursor</cursorShape>
+  </property>
+  <property name="windowTitle">
+   <string>Login</string>
+  </property>
+  <property name="modal">
+   <bool>true</bool>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_5">
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout_4" stretch="1,0,0">
+     <item>
+      <layout class="QVBoxLayout" name="verticalLayout">
+       <item>
+        <widget class="QLabel" name="label">
+         <property name="font">
+          <font>
+           <pointsize>20</pointsize>
+          </font>
+         </property>
+         <property name="text">
+          <string>Login</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QLabel" name="authMessage">
+         <property name="enabled">
+          <bool>true</bool>
+         </property>
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+           <horstretch>0</horstretch>
+           <verstretch>2</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="text">
+          <string>Please enter the login credentials</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+     <item>
+      <layout class="QVBoxLayout" name="verticalLayout_2">
+       <property name="spacing">
+        <number>0</number>
+       </property>
+       <property name="leftMargin">
+        <number>6</number>
+       </property>
+       <item>
+        <widget class="QLabel" name="portalLabel">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="text">
+          <string>Portal:</string>
+         </property>
+         <property name="margin">
+          <number>0</number>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QLabel" name="portalAddress">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="text">
+          <string>vpn.example.com</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+     <item>
+      <layout class="QVBoxLayout" name="verticalLayout_3">
+       <item>
+        <widget class="QLineEdit" name="username">
+         <property name="placeholderText">
+          <string>Username</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QLineEdit" name="password">
+         <property name="text">
+          <string/>
+         </property>
+         <property name="echoMode">
+          <enum>QLineEdit::Password</enum>
+         </property>
+         <property name="placeholderText">
+          <string>Password</string>
+         </property>
+         <property name="clearButtonEnabled">
+          <bool>false</bool>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="loginButton">
+         <property name="text">
+          <string>Login</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

GPClient/portalauthenticator.cpp

@@ -0,0 +1,190 @@
+#include "portalauthenticator.h"
+#include "gphelper.h"
+#include "normalloginwindow.h"
+#include "samlloginwindow.h"
+#include "loginparams.h"
+#include "preloginresponse.h"
+#include "portalconfigresponse.h"
+#include "gpgateway.h"
+
+#include <plog/Log.h>
+#include <QNetworkReply>
+
+using namespace gpclient::helper;
+
+PortalAuthenticator::PortalAuthenticator(const QString& portal) : QObject()
+  , portal(portal)
+  , preloginUrl("https://" + portal + "/global-protect/prelogin.esp")
+  , configUrl("https://" + portal + "/global-protect/getconfig.esp")
+{
+}
+
+PortalAuthenticator::~PortalAuthenticator()
+{
+    delete normalLoginWindow;
+}
+
+
+void PortalAuthenticator::authenticate()
+{
+    PLOGI << "Preform portal prelogin at " << preloginUrl;
+
+    QNetworkReply *reply = createRequest(preloginUrl);
+    connect(reply, &QNetworkReply::finished, this, &PortalAuthenticator::onPreloginFinished);
+}
+
+void PortalAuthenticator::onPreloginFinished()
+{
+    QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
+
+    if (reply->error()) {
+        PLOGE << QString("Error occurred while accessing %1, %2").arg(preloginUrl).arg(reply->errorString());
+        emit preloginFailed("Error occurred on the portal prelogin interface.");
+        delete reply;
+        return;
+    }
+
+    PLOGI << "Portal prelogin succeeded.";
+
+    preloginResponse = PreloginResponse::parse(reply->readAll());
+    if (preloginResponse.hasSamlAuthFields()) {
+        // Do SAML authentication
+        samlAuth();
+    } else if (preloginResponse.hasNormalAuthFields()) {
+        // Do normal username/password authentication
+        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.");
+    }
+
+    delete reply;
+}
+
+void PortalAuthenticator::tryAutoLogin()
+{
+    const QString username = settings::get("username").toString();
+    const QString password = settings::get("password").toString();
+
+    if (!username.isEmpty() && !password.isEmpty()) {
+        PLOGI << "Trying auto login using the saved credentials";
+        isAutoLogin = true;
+        fetchConfig(settings::get("username").toString(), settings::get("password").toString());
+    } else {
+        normalAuth();
+    }
+}
+
+void PortalAuthenticator::normalAuth()
+{
+    PLOGI << "Trying to launch the normal login window...";
+
+    normalLoginWindow = new NormalLoginWindow;
+    normalLoginWindow->setPortalAddress(portal);
+    normalLoginWindow->setAuthMessage(preloginResponse.authMessage());
+    normalLoginWindow->setUsernameLabel(preloginResponse.labelUsername());
+    normalLoginWindow->setPasswordLabel(preloginResponse.labelPassword());
+
+    // Do login
+    connect(normalLoginWindow, &NormalLoginWindow::performLogin, this, &PortalAuthenticator::onPerformNormalLogin);
+    connect(normalLoginWindow, &NormalLoginWindow::rejected, this, &PortalAuthenticator::onLoginWindowRejected);
+
+    normalLoginWindow->exec();
+    delete normalLoginWindow;
+    normalLoginWindow = nullptr;
+}
+
+void PortalAuthenticator::onPerformNormalLogin(const QString &username, const QString &password)
+{
+    normalLoginWindow->setProcessing(true);
+    fetchConfig(username, password);
+}
+
+void PortalAuthenticator::onLoginWindowRejected()
+{
+    emitFail();
+}
+
+void PortalAuthenticator::samlAuth()
+{
+    PLOGI << "Trying to perform SAML login with saml-method " << preloginResponse.samlMethod();
+
+    SAMLLoginWindow *loginWindow = samlLogin(preloginResponse.samlMethod(), preloginResponse.samlRequest(), preloginUrl);
+
+    if (!loginWindow) {
+        openMessageBox("SAML Login failed for portal");
+        return;
+    }
+
+    connect(loginWindow, &SAMLLoginWindow::success, this, &PortalAuthenticator::onSAMLLoginSuccess);
+    connect(loginWindow, &SAMLLoginWindow::rejected, this, &PortalAuthenticator::onLoginWindowRejected);
+}
+
+void PortalAuthenticator::onSAMLLoginSuccess(const QMap<QString, QString> &samlResult)
+{
+    PLOGI << "SAML login succeeded, got the prelogin cookie " << samlResult.value("preloginCookie");
+
+    fetchConfig(samlResult.value("username"), "", samlResult.value("preloginCookie"));
+}
+
+void PortalAuthenticator::fetchConfig(QString username, QString password, QString preloginCookie)
+{
+    LoginParams params;
+    params.setServer(portal);
+    params.setUser(username);
+    params.setPassword(password);
+    params.setPreloginCookie(preloginCookie);
+
+    // Save the username and password for future use.
+    this->username = username;
+    this->password = password;
+
+    PLOGI << "Fetching the portal config from " << configUrl << " for user: " << username;
+
+    QNetworkReply *reply = createRequest(configUrl, params.toUtf8());
+
+    connect(reply, &QNetworkReply::finished, this, &PortalAuthenticator::onFetchConfigFinished);
+}
+
+void PortalAuthenticator::onFetchConfigFinished()
+{
+    QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
+
+    if (reply->error()) {
+        PLOGE << QString("Failed to fetch the portal config from %1, %2").arg(configUrl).arg(reply->errorString());
+
+        // Login failed, enable the fields of the normal login window
+        if (normalLoginWindow) {
+            normalLoginWindow->setProcessing(false);
+            openMessageBox("Portal login failed.", "Please check your credentials and try again.");
+        } else if (isAutoLogin) {
+            isAutoLogin = false;
+            normalAuth();
+        } else {
+            emitFail("Failed to fetch the portal config.");
+        }
+        return;
+    }
+
+    PLOGI << "Fetch the portal config succeeded.";
+
+    PortalConfigResponse response = PortalConfigResponse::parse(reply->readAll());
+    // Add the username & password to the response object
+    response.setUsername(username);
+    response.setPassword(password);
+
+    // Close the login window
+    if (normalLoginWindow) {
+        // Save the credentials for reuse
+        settings::save("username", username);
+        settings::save("password", password);
+        normalLoginWindow->close();
+    }
+
+    emit success(response, filterPreferredGateway(response.allGateways(), preloginResponse.region()));
+}
+
+void PortalAuthenticator::emitFail(const QString& msg)
+{
+    emit fail(msg);
+}

GPClient/portalauthenticator.h

@@ -0,0 +1,52 @@
+#ifndef PORTALAUTHENTICATOR_H
+#define PORTALAUTHENTICATOR_H
+
+#include "portalconfigresponse.h"
+#include "normalloginwindow.h"
+#include "samlloginwindow.h"
+#include "preloginresponse.h"
+
+#include <QObject>
+
+class PortalAuthenticator : public QObject
+{
+    Q_OBJECT
+public:
+    explicit PortalAuthenticator(const QString& portal);
+    ~PortalAuthenticator();
+
+    void authenticate();
+
+signals:
+    void success(const PortalConfigResponse&, const GPGateway&);
+    void fail(const QString& msg);
+    void preloginFailed(const QString& msg);
+
+private slots:
+    void onPreloginFinished();
+    void onPerformNormalLogin(const QString &username, const QString &password);
+    void onLoginWindowRejected();
+    void onSAMLLoginSuccess(const QMap<QString, QString> &samlResult);
+    void onFetchConfigFinished();
+
+private:
+    QString portal;
+    QString preloginUrl;
+    QString configUrl;
+    QString username;
+    QString password;
+
+    PreloginResponse preloginResponse;
+
+    bool isAutoLogin { false };
+
+    NormalLoginWindow *normalLoginWindow{ nullptr };
+
+    void tryAutoLogin();
+    void normalAuth();
+    void samlAuth();
+    void fetchConfig(QString username, QString password, QString preloginCookie = "");
+    void emitFail(const QString& msg = "");
+};
+
+#endif // PORTALAUTHENTICATOR_H

GPClient/portalconfigresponse.cpp

@@ -0,0 +1,145 @@
+#include "portalconfigresponse.h"
+
+#include <QXmlStreamReader>
+#include <plog/Log.h>
+
+QString PortalConfigResponse::xmlUserAuthCookie = "portal-userauthcookie";
+QString PortalConfigResponse::xmlPrelogonUserAuthCookie = "portal-prelogonuserauthcookie";
+QString PortalConfigResponse::xmlGateways = "gateways";
+
+PortalConfigResponse::PortalConfigResponse()
+{
+}
+
+PortalConfigResponse PortalConfigResponse::parse(const QByteArray& xml)
+{
+    QXmlStreamReader xmlReader(xml);
+    PortalConfigResponse response;
+    response.setRawResponse(xml);
+
+    while (!xmlReader.atEnd()) {
+        xmlReader.readNextStartElement();
+
+        QString name = xmlReader.name().toString();
+
+        if (name == xmlUserAuthCookie) {
+            response.setUserAuthCookie(xmlReader.readElementText());
+        } else if (name == xmlPrelogonUserAuthCookie) {
+            response.setPrelogonUserAuthCookie(xmlReader.readElementText());
+        } else if (name == xmlGateways) {
+            response.setGateways(parseGateways(xmlReader));
+        }
+    }
+
+    return response;
+}
+
+const QByteArray& PortalConfigResponse::rawResponse() const
+{
+    return _rawResponse;
+}
+
+QString PortalConfigResponse::username() const
+{
+    return _username;
+}
+
+QString PortalConfigResponse::password() const
+{
+    return _password;
+}
+
+QList<GPGateway> PortalConfigResponse::parseGateways(QXmlStreamReader &xmlReader)
+{
+    QList<GPGateway> gateways;
+
+    while (xmlReader.name() != xmlGateways || !xmlReader.isEndElement()) {
+        xmlReader.readNext();
+        // Parse the gateways -> external -> list -> entry
+        if (xmlReader.name() == "entry" && xmlReader.isStartElement()) {
+            GPGateway gateway;
+            QString address = xmlReader.attributes().value("name").toString();
+            gateway.setAddress(address);
+            gateway.setPriorityRules(parsePriorityRules(xmlReader));
+            gateway.setName(parseGatewayName(xmlReader));
+            gateways.append(gateway);
+        }
+    }
+    return gateways;
+}
+
+QMap<QString, int> PortalConfigResponse::parsePriorityRules(QXmlStreamReader &xmlReader)
+{
+    QMap<QString, int> priorityRules;
+
+    while (xmlReader.name() != "priority-rule" || !xmlReader.isEndElement()) {
+        xmlReader.readNext();
+
+        if (xmlReader.name() == "entry" && xmlReader.isStartElement()) {
+            QString ruleName = xmlReader.attributes().value("name").toString();
+            // Read the priority tag
+            xmlReader.readNextStartElement();
+            int ruleValue = xmlReader.readElementText().toUInt();
+            priorityRules.insert(ruleName, ruleValue);
+        }
+    }
+    return priorityRules;
+}
+
+QString PortalConfigResponse::parseGatewayName(QXmlStreamReader &xmlReader)
+{
+   while (xmlReader.name() != "description" || !xmlReader.isEndElement()) {
+       xmlReader.readNext();
+       if (xmlReader.name() == "description" && xmlReader.tokenType() == xmlReader.StartElement) {
+           return xmlReader.readElementText();
+       }
+   }
+
+   PLOGE << "Error: <description> tag not found";
+   return "";
+}
+
+QString PortalConfigResponse::userAuthCookie() const
+{
+    return _userAuthCookie;
+}
+
+QString PortalConfigResponse::prelogonUserAuthCookie() const
+{
+    return _prelogonAuthCookie;
+}
+
+QList<GPGateway>& PortalConfigResponse::allGateways()
+{
+    return _gateways;
+}
+
+void PortalConfigResponse::setRawResponse(const QByteArray &response)
+{
+    _rawResponse = response;
+}
+
+void PortalConfigResponse::setUsername(const QString& username)
+{
+    _username = username;
+}
+
+void PortalConfigResponse::setPassword(const QString& password)
+{
+    _password = password;
+}
+
+void PortalConfigResponse::setUserAuthCookie(const QString &cookie)
+{
+    _userAuthCookie = cookie;
+}
+
+void PortalConfigResponse::setPrelogonUserAuthCookie(const QString &cookie)
+{
+    _prelogonAuthCookie = cookie;
+}
+
+void PortalConfigResponse::setGateways(const QList<GPGateway> &gateways)
+{
+    _gateways = gateways;
+}

GPClient/portalconfigresponse.h

@@ -0,0 +1,50 @@
+#ifndef PORTALCONFIGRESPONSE_H
+#define PORTALCONFIGRESPONSE_H
+
+#include "gpgateway.h"
+
+#include <QString>
+#include <QList>
+#include <QXmlStreamReader>
+
+class PortalConfigResponse
+{
+public:
+    PortalConfigResponse();
+
+    static PortalConfigResponse parse(const QByteArray& xml);
+
+    const QByteArray& rawResponse() const;
+    QString username() const;
+    QString password() const;
+    QString userAuthCookie() const;
+    QString prelogonUserAuthCookie() const;
+    QList<GPGateway>& allGateways();
+
+    void setUsername(const QString& username);
+    void setPassword(const QString& password);
+
+private:
+    static QString xmlUserAuthCookie;
+    static QString xmlPrelogonUserAuthCookie;
+    static QString xmlGateways;
+
+    QByteArray _rawResponse;
+    QString _username;
+    QString _password;
+    QString _userAuthCookie;
+    QString _prelogonAuthCookie;
+
+    QList<GPGateway> _gateways;
+
+    void setRawResponse(const QByteArray& response);
+    void setUserAuthCookie(const QString& cookie);
+    void setPrelogonUserAuthCookie(const QString& cookie);
+    void setGateways(const QList<GPGateway>& gateways);
+
+    static QList<GPGateway> parseGateways(QXmlStreamReader &xmlReader);
+    static QMap<QString, int> parsePriorityRules(QXmlStreamReader &xmlReader);
+    static QString parseGatewayName(QXmlStreamReader &xmlReader);
+};
+
+#endif // PORTALCONFIGRESPONSE_H

GPClient/preloginresponse.cpp

@@ -0,0 +1,97 @@
+#include "preloginresponse.h"
+
+#include <QXmlStreamReader>
+#include <QMap>
+
+QString PreloginResponse::xmlAuthMessage = "authentication-message";
+QString PreloginResponse::xmlLabelUsername = "username-label";
+QString PreloginResponse::xmlLabelPassword = "password-label";
+QString PreloginResponse::xmlSamlMethod = "saml-auth-method";
+QString PreloginResponse::xmlSamlRequest = "saml-request";
+QString PreloginResponse::xmlRegion = "region";
+
+PreloginResponse::PreloginResponse()
+{
+    add(xmlAuthMessage, "");
+    add(xmlLabelUsername, "");
+    add(xmlLabelPassword, "");
+    add(xmlSamlMethod, "");
+    add(xmlSamlRequest, "");
+    add(xmlRegion, "");
+}
+
+PreloginResponse PreloginResponse::parse(const QByteArray& xml)
+{
+    QXmlStreamReader xmlReader(xml);
+    PreloginResponse response;
+    response.setRawResponse(xml);
+
+    while (!xmlReader.atEnd()) {
+        xmlReader.readNextStartElement();
+        QString name = xmlReader.name().toString();
+        if (response.has(name)) {
+            response.add(name, xmlReader.readElementText());
+        }
+    }
+    return response;
+}
+
+const QByteArray& PreloginResponse::rawResponse() const
+{
+    return _rawResponse;
+}
+
+QString PreloginResponse::authMessage() const
+{
+    return resultMap.value(xmlAuthMessage);
+}
+
+QString PreloginResponse::labelUsername() const
+{
+    return resultMap.value(xmlLabelUsername);
+}
+
+QString PreloginResponse::labelPassword() const
+{
+    return resultMap.value(xmlLabelPassword);
+}
+
+QString PreloginResponse::samlMethod() const
+{
+    return resultMap.value(xmlSamlMethod);
+}
+
+QString PreloginResponse::samlRequest() const
+{
+    return QByteArray::fromBase64(resultMap.value(xmlSamlRequest).toUtf8());
+}
+
+QString PreloginResponse::region() const
+{
+    return resultMap.value(xmlRegion);
+}
+
+bool PreloginResponse::hasSamlAuthFields() const
+{
+    return !samlMethod().isEmpty() && !samlRequest().isEmpty();
+}
+
+bool PreloginResponse::hasNormalAuthFields() const
+{
+    return !labelUsername().isEmpty() && !labelPassword().isEmpty();
+}
+
+void PreloginResponse::setRawResponse(const QByteArray &response)
+{
+    _rawResponse = response;
+}
+
+bool PreloginResponse::has(const QString &name) const
+{
+    return resultMap.contains(name);
+}
+
+void PreloginResponse::add(const QString &name, const QString &value)
+{
+    resultMap.insert(name, value);
+}

GPClient/preloginresponse.h

@@ -0,0 +1,41 @@
+#ifndef PRELOGINRESPONSE_H
+#define PRELOGINRESPONSE_H
+
+#include <QString>
+#include <QMap>
+
+class PreloginResponse
+{
+public:
+    PreloginResponse();
+
+    static PreloginResponse parse(const QByteArray& xml);
+
+    const QByteArray& rawResponse() const;
+    QString authMessage() const;
+    QString labelUsername() const;
+    QString labelPassword() const;
+    QString samlMethod() const;
+    QString samlRequest() const;
+    QString region() const;
+
+    bool hasSamlAuthFields() const;
+    bool hasNormalAuthFields() const;
+
+private:
+    static QString xmlAuthMessage;
+    static QString xmlLabelUsername;
+    static QString xmlLabelPassword;
+    static QString xmlSamlMethod;
+    static QString xmlSamlRequest;
+    static QString xmlRegion;
+
+    QMap<QString, QString> resultMap;
+    QByteArray _rawResponse;
+
+    void setRawResponse(const QByteArray &response);
+    void add(const QString &name, const QString &value);
+    bool has(const QString &name) const;
+};
+
+#endif // PRELOGINRESPONSE_H

GPClient/samlloginwindow.cpp

@@ -1,19 +1,24 @@
 #include "samlloginwindow.h"
 
 #include <QVBoxLayout>
+#include <plog/Log.h>
+#include <QWebEngineProfile>
 
 SAMLLoginWindow::SAMLLoginWindow(QWidget *parent)
     : QDialog(parent)
 {
-    setWindowTitle("SAML Login");
-    resize(610, 406);
+    setWindowTitle("GlobalProtect SAML Login");
+    resize(700, 550);
+
     QVBoxLayout *verticalLayout = new QVBoxLayout(this);
     webView = new EnhancedWebView(this);
     webView->setUrl(QUrl("about:blank"));
+    // webView->page()->profile()->setPersistentCookiesPolicy(QWebEngineProfile::NoPersistentCookies);
     verticalLayout->addWidget(webView);
 
     webView->initialize();
-    QObject::connect(webView, &EnhancedWebView::responseReceived, this, &SAMLLoginWindow::onResponseReceived);
+    connect(webView, &EnhancedWebView::responseReceived, this, &SAMLLoginWindow::onResponseReceived);
+    connect(webView, &EnhancedWebView::loadFinished, this, &SAMLLoginWindow::onLoadFinished);
 }
 
 SAMLLoginWindow::~SAMLLoginWindow()
@@ -29,7 +34,7 @@ void SAMLLoginWindow::closeEvent(QCloseEvent *event)
 
 void SAMLLoginWindow::login(QString url, QString html)
 {
-    if (html == "") {
+    if (html.isEmpty()) {
         webView->load(QUrl(url));
     } else {
         webView->setHtml(html, url);
@@ -47,17 +52,24 @@ void SAMLLoginWindow::onResponseReceived(QJsonObject params)
     QJsonObject response = params.value("response").toObject();
     QJsonObject headers = response.value("headers").toObject();
 
-    foreach (const QString& key, headers.keys()) {
-        if (key.startsWith("saml-") || key == "prelogin-cookie" || key == "portal-userauthcookie") {
-            samlResult.insert(key, headers.value(key));
+    const QString username = headers.value("saml-username").toString();
+    const QString preloginCookie = headers.value("prelogin-cookie").toString();
+
+    if (!username.isEmpty() && !preloginCookie.isEmpty()) {
+        samlResult.insert("username", username);
+        samlResult.insert("preloginCookie", preloginCookie);
     }
 }
 
+void SAMLLoginWindow::onLoadFinished()
+{
+     LOGI << "Load finished " << this->webView->page()->url().toString();
+
     // Check the SAML result
-    if (samlResult.contains("saml-username")
-            && (samlResult.contains("prelogin-cookie") || samlResult.contains("portal-userauthcookie"))) {
-        samlResult.insert("server", QUrl(response.value("url").toString()).authority());
+    if (!samlResult.value("username").isEmpty() && !samlResult.value("preloginCookie").isEmpty()) {
         emit success(samlResult);
         accept();
+    } else {
+        open();
     }
 }

GPClient/samlloginwindow.h

@@ -4,7 +4,7 @@
 #include "enhancedwebview.h"
 
 #include <QDialog>
-#include <QJsonObject>
+#include <QMap>
 #include <QCloseEvent>
 
 class SAMLLoginWindow : public QDialog
@@ -18,14 +18,15 @@ public:
     void login(QString url, QString html = "");
 
 signals:
-    void success(QJsonObject samlResult);
+    void success(QMap<QString, QString> samlResult);
 
 private slots:
     void onResponseReceived(QJsonObject params);
+    void onLoadFinished();
 
 private:
     EnhancedWebView *webView;
-    QJsonObject samlResult;
+    QMap<QString, QString> samlResult;
 
     void closeEvent(QCloseEvent *event);
 };

GPService/gpservice.cpp

@@ -66,13 +66,10 @@ void GPService::connect(QString server, QString username, QString passwd)
     args << QCoreApplication::arguments().mid(1)
      << "--protocol=gp"
      << "-u" << username
-     << "--passwd-on-stdin"
-     << "--timestamp"
+     << "-C" << passwd
      << server;
 
     openconnect->start(bin, args);
-    openconnect->write(passwd.toUtf8());
-    openconnect->closeWriteChannel();
 }
 
 void GPService::disconnect()
@@ -130,6 +127,5 @@ void GPService::onProcessFinished(int exitCode, QProcess::ExitStatus exitStatus)
 
 void GPService::log(QString msg)
 {
-    qInfo() << msg;
     emit logAvailable(msg);
 }

GPService/systemd/gpservice.service

@@ -2,6 +2,7 @@
 Description=GlobalProtect openconnect DBus service
 
 [Service]
+Environment=LC_ALL=en_US
 Type=dbus
 BusName=com.yuezk.qt.GPService
 ExecStart=/usr/bin/gpservice

README.md

@@ -5,6 +5,12 @@ A GlobalProtect VPN client (GUI) for Linux based on Openconnect and built with Q
   <img src="screenshot.png">
 </p>
 
+## Features
+
+- Supports both SAML and non-SAML authentication modes.
+- Supports automatically select the preferred gateway from the multiple gateways.
+- Similar user experience as the offical client in macOS.
+
 ## Prerequisites
 
 - Openconnect v8.x

plog

@@ -0,0 +1 @@
+Subproject commit fda4a26c26b2d1b2beb68d7b92b56950ec2b8ad2