proxyHandler:Add ProxyHandler for Authenticated Proxy Support

Added ProxyHandler class to qt-kiosk-browser for handling proxies with
login authentication, automatically configured using https_proxy and
http_proxy environment variables. This enhancement simplifies
connectivity in environments with secure proxy requirements.

Signed-off-by: Arthur Oliveira <[email protected]>

Author: arthursdo

browser.pro

@@ -7,12 +7,14 @@ CONFIG += c++11
 TARGET = qt-kiosk-browser
 
 HEADERS += \
+  proxyhandler.hpp \
   inputeventhandler.hpp \
   browser.hpp
 
 SOURCES += \
   main.cpp \
   inputeventhandler.cpp \
+  proxyhandler.cpp \
   browser.cpp
 
 RESOURCES += resources.qrc

proxyhandler.cpp

@@ -0,0 +1,51 @@
+#include "proxyhandler.hpp"
+
+void ProxyHandler::printCurrentProxySettings()
+{
+    if (QNetworkProxyFactory::usesSystemConfiguration())
+    {
+        qDebug() << "Using system proxy configuration.";
+    }
+    else
+    {
+        qDebug() << "Using custom proxy configuration.";
+    }
+
+    QNetworkProxy proxy = QNetworkProxy::applicationProxy();
+    qDebug() << "Proxy type:" << proxy.type();
+    qDebug() << "Proxy host:" << proxy.hostName();
+    qDebug() << "Proxy port:" << proxy.port();
+    qDebug() << "Proxy user:" << proxy.user();
+    qDebug() << "Proxy password:" << proxy.password();
+}
+
+Q_INVOKABLE void ProxyHandler::useSystemProxy()
+{
+    QByteArray proxyUrl = qgetenv("https_proxy");
+
+    qDebug() << "Proxy URL: " << proxyUrl;
+    if (!proxyUrl.isEmpty())
+    {
+        QUrl url{QString(proxyUrl)};
+        qDebug() << "Proxy URL is not empty: " << url;
+
+        QNetworkProxy proxy;
+        proxy.setType(QNetworkProxy::HttpProxy);
+        proxy.setHostName(url.host());
+        proxy.setPort(url.port());
+
+        if (!url.userName().isEmpty())
+        {
+            proxy.setUser(url.userName());
+        }
+        if (!url.password().isEmpty())
+        {
+            proxy.setPassword(url.password());
+        }
+        qDebug() << "Proxy: " << proxy;
+
+        QNetworkProxy::setApplicationProxy(proxy);
+    }
+    qDebug() << "application proxy is" << QNetworkProxy::applicationProxy();
+    qDebug() << "Done setting use system proxy to true";
+}

proxyhandler.hpp

@@ -0,0 +1,26 @@
+/*
+ * qt-kiosk-browser
+ * Copyright (C) 2018
+ * O.S. Systems Sofware LTDA: [email protected]
+ *
+ * SPDX-License-Identifier:     GPL-3.0
+ */
+
+
+#ifndef PROXYHANDLER_HPP
+#define PROXYHANDLER_HPP
+
+#include <QObject>
+#include <QNetworkProxy>
+#include <QByteArray>
+#include <QUrl>
+
+class ProxyHandler : public QObject
+{
+    Q_OBJECT
+public:
+    void printCurrentProxySettings();
+    Q_INVOKABLE void useSystemProxy();
+};
+
+#endif // PROXYHANDLER_HPP