/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the demonstration applications of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "networkaccessmanager.h"+
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+
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#include "browserapplication.h"+
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#include "browsermainwindow.h"+
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#include "ui_passworddialog.h"+
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#include "ui_proxy.h"+
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+
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#include <QtCore/QSettings>+
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+
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#include <QtGui/QDesktopServices>+
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#include <QtGui/QDialog>+
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#include <QtGui/QMessageBox>+
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#include <QtGui/QStyle>+
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#include <QtGui/QTextDocument>+
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+
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#include <QtNetwork/QAuthenticator>+
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#include <QtNetwork/QNetworkDiskCache>+
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#include <QtNetwork/QNetworkProxy>+
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#include <QtNetwork/QNetworkRequest>+
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#include <QtNetwork/QNetworkReply>+
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#include <QtNetwork/QSslError>+
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+
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NetworkAccessManager::NetworkAccessManager(QObject *parent)+
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    : QNetworkAccessManager(parent),+
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    requestFinishedCount(0), requestFinishedFromCacheCount(0), requestFinishedPipelinedCount(0),+
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    requestFinishedSecureCount(0)+
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{+
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    connect(this, SIGNAL(authenticationRequired(QNetworkReply*,QAuthenticator*)),+
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            SLOT(authenticationRequired(QNetworkReply*,QAuthenticator*)));+
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    connect(this, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)),+
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            SLOT(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)));+
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    connect(this, SIGNAL(finished(QNetworkReply*)),+
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            SLOT(requestFinished(QNetworkReply*)));+
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#ifndef QT_NO_OPENSSL+
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    connect(this, SIGNAL(sslErrors(QNetworkReply*,QList<QSslError>)),+
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            SLOT(sslErrors(QNetworkReply*,QList<QSslError>)));+
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#endif+
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    loadSettings();+
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+
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    QNetworkDiskCache *diskCache = new QNetworkDiskCache(this);+
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    QString location = QDesktopServices::storageLocation(QDesktopServices::CacheLocation);+
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    diskCache->setCacheDirectory(location);+
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    setCache(diskCache);+
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}+
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+
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QNetworkReply* NetworkAccessManager::createRequest(Operation op, const QNetworkRequest & req, QIODevice * outgoingData)+
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{+
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    QNetworkRequest request = req; // copy so we can modify+
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    // this is a temporary hack until we properly use the pipelining flags from QtWebkit+
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    // pipeline everything! :)+
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    request.setAttribute(QNetworkRequest::HttpPipeliningAllowedAttribute, true);+
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    return QNetworkAccessManager::createRequest(op, request, outgoingData);+
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}+
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+
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void NetworkAccessManager::requestFinished(QNetworkReply *reply)+
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{+
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    requestFinishedCount++;+
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+
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    if (reply->attribute(QNetworkRequest::SourceIsFromCacheAttribute).toBool() == true)+
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        requestFinishedFromCacheCount++;+
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+
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    if (reply->attribute(QNetworkRequest::HttpPipeliningWasUsedAttribute).toBool() == true)+
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        requestFinishedPipelinedCount++;+
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+
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    if (reply->attribute(QNetworkRequest::ConnectionEncryptedAttribute).toBool() == true)+
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        requestFinishedSecureCount++;+
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+
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    if (requestFinishedCount % 10)+
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        return;+
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+
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    double pctCached = (double(requestFinishedFromCacheCount) * 100.0/ double(requestFinishedCount));+
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    double pctPipelined = (double(requestFinishedPipelinedCount) * 100.0/ double(requestFinishedCount));+
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    double pctSecure = (double(requestFinishedSecureCount) * 100.0/ double(requestFinishedCount));+
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#ifdef QT_DEBUG+
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    qDebug("STATS [%lli requests total] [%3.2f%% from cache] [%3.2f%% pipelined] [%3.2f%% SSL/TLS]", requestFinishedCount, pctCached, pctPipelined, pctSecure);+
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#endif+
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}+
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+
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void NetworkAccessManager::loadSettings()+
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{+
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    QSettings settings;+
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    settings.beginGroup(QLatin1String("proxy"));+
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    QNetworkProxy proxy;+
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    if (settings.value(QLatin1String("enabled"), false).toBool()) {+
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        if (settings.value(QLatin1String("type"), 0).toInt() == 0)+
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            proxy = QNetworkProxy::Socks5Proxy;+
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        else+
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            proxy = QNetworkProxy::HttpProxy;+
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        proxy.setHostName(settings.value(QLatin1String("hostName")).toString());+
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        proxy.setPort(settings.value(QLatin1String("port"), 1080).toInt());+
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        proxy.setUser(settings.value(QLatin1String("userName")).toString());+
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        proxy.setPassword(settings.value(QLatin1String("password")).toString());+
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    }+
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    setProxy(proxy);+
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}+
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+
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void NetworkAccessManager::authenticationRequired(QNetworkReply *reply, QAuthenticator *auth)+
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{+
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    BrowserMainWindow *mainWindow = BrowserApplication::instance()->mainWindow();+
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+
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    QDialog dialog(mainWindow);+
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    dialog.setWindowFlags(Qt::Sheet);+
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+
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    Ui::PasswordDialog passwordDialog;+
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    passwordDialog.setupUi(&dialog);+
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+
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    passwordDialog.iconLabel->setText(QString());+
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    passwordDialog.iconLabel->setPixmap(mainWindow->style()->standardIcon(QStyle::SP_MessageBoxQuestion, 0, mainWindow).pixmap(32, 32));+
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+
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    QString introMessage = tr("<qt>Enter username and password for \"%1\" at %2</qt>");+
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    introMessage = introMessage.arg(Qt::escape(reply->url().toString())).arg(Qt::escape(reply->url().toString()));+
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    passwordDialog.introLabel->setText(introMessage);+
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    passwordDialog.introLabel->setWordWrap(true);+
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+
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    if (dialog.exec() == QDialog::Accepted) {+
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        auth->setUser(passwordDialog.userNameLineEdit->text());+
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        auth->setPassword(passwordDialog.passwordLineEdit->text());+
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    }+
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}+
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+
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void NetworkAccessManager::proxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *auth)+
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{+
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    BrowserMainWindow *mainWindow = BrowserApplication::instance()->mainWindow();+
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+
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    QDialog dialog(mainWindow);+
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    dialog.setWindowFlags(Qt::Sheet);+
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+
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    Ui::ProxyDialog proxyDialog;+
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    proxyDialog.setupUi(&dialog);+
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+
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    proxyDialog.iconLabel->setText(QString());+
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    proxyDialog.iconLabel->setPixmap(mainWindow->style()->standardIcon(QStyle::SP_MessageBoxQuestion, 0, mainWindow).pixmap(32, 32));+
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+
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    QString introMessage = tr("<qt>Connect to proxy \"%1\" using:</qt>");+
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    introMessage = introMessage.arg(Qt::escape(proxy.hostName()));+
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    proxyDialog.introLabel->setText(introMessage);+
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    proxyDialog.introLabel->setWordWrap(true);+
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+
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    if (dialog.exec() == QDialog::Accepted) {+
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        auth->setUser(proxyDialog.userNameLineEdit->text());+
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        auth->setPassword(proxyDialog.passwordLineEdit->text());+
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    }+
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}+
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+
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#ifndef QT_NO_OPENSSL+
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void NetworkAccessManager::sslErrors(QNetworkReply *reply, const QList<QSslError> &error)+
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{+
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    // check if SSL certificate has been trusted already+
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    QString replyHost = reply->url().host() + ":" + reply->url().port();+
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    if(! sslTrustedHostList.contains(replyHost)) {+
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        BrowserMainWindow *mainWindow = BrowserApplication::instance()->mainWindow();+
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+
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        QStringList errorStrings;+
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        for (int i = 0; i < error.count(); ++i)+
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            errorStrings += error.at(i).errorString();+
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        QString errors = errorStrings.join(QLatin1String("\n"));+
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        int ret = QMessageBox::warning(mainWindow, QCoreApplication::applicationName(),+
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                tr("SSL Errors:\n\n%1\n\n%2\n\n"+
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                        "Do you want to ignore these errors for this host?").arg(reply->url().toString()).arg(errors),+
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                        QMessageBox::Yes | QMessageBox::No,+
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                        QMessageBox::No);+
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        if (ret == QMessageBox::Yes) {+
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            reply->ignoreSslErrors();+
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            sslTrustedHostList.append(replyHost);+
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        }+
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    }+
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}+
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#endif+
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