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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#include "networkaccessmanager.h"

#include "browserapplication.h"
#include "browsermainwindow.h"
#include "ui_passworddialog.h"
#include "ui_proxy.h"

#include <QtCore/QSettings>

#include <QtGui/QDesktopServices>
#include <QtGui/QDialog>
#include <QtGui/QMessageBox>
#include <QtGui/QStyle>
#include <QtGui/QTextDocument>

#include <QtNetwork/QAuthenticator>
#include <QtNetwork/QNetworkDiskCache>
#include <QtNetwork/QNetworkProxy>
#include <QtNetwork/QNetworkReply>
#include <QtNetwork/QSslError>

NetworkAccessManager::NetworkAccessManager(QObject *parent)
    : QNetworkAccessManager(parent)
{
    connect(this, SIGNAL(authenticationRequired(QNetworkReply*, QAuthenticator*)),
            SLOT(authenticationRequired(QNetworkReply*,QAuthenticator*)));
    connect(this, SIGNAL(proxyAuthenticationRequired(const QNetworkProxy&, QAuthenticator*)),
            SLOT(proxyAuthenticationRequired(const QNetworkProxy&, QAuthenticator*)));
#ifndef QT_NO_OPENSSL
    connect(this, SIGNAL(sslErrors(QNetworkReply*, const QList<QSslError>&)),
            SLOT(sslErrors(QNetworkReply*, const QList<QSslError>&)));
#endif
    loadSettings();

    QNetworkDiskCache *diskCache = new QNetworkDiskCache(this);
    QString location = QDesktopServices::storageLocation(QDesktopServices::CacheLocation);
    diskCache->setCacheDirectory(location);
    setCache(diskCache);
}

void NetworkAccessManager::loadSettings()
{
    QSettings settings;
    settings.beginGroup(QLatin1String("proxy"));
    QNetworkProxy proxy;
    if (settings.value(QLatin1String("enabled"), false).toBool()) {
        if (settings.value(QLatin1String("type"), 0).toInt() == 0)
            proxy = QNetworkProxy::Socks5Proxy;
        else
            proxy = QNetworkProxy::HttpProxy;
        proxy.setHostName(settings.value(QLatin1String("hostName")).toString());
        proxy.setPort(settings.value(QLatin1String("port"), 1080).toInt());
        proxy.setUser(settings.value(QLatin1String("userName")).toString());
        proxy.setPassword(settings.value(QLatin1String("password")).toString());
    }
    setProxy(proxy);
}

void NetworkAccessManager::authenticationRequired(QNetworkReply *reply, QAuthenticator *auth)
{
    BrowserMainWindow *mainWindow = BrowserApplication::instance()->mainWindow();

    QDialog dialog(mainWindow);
    dialog.setWindowFlags(Qt::Sheet);

    Ui::PasswordDialog passwordDialog;
    passwordDialog.setupUi(&dialog);

    passwordDialog.iconLabel->setText(QString());
    passwordDialog.iconLabel->setPixmap(mainWindow->style()->standardIcon(QStyle::SP_MessageBoxQuestion, 0, mainWindow).pixmap(32, 32));

    QString introMessage = tr("<qt>Enter username and password for \"%1\" at %2</qt>");
    introMessage = introMessage.arg(Qt::escape(reply->url().toString())).arg(Qt::escape(reply->url().toString()));
    passwordDialog.introLabel->setText(introMessage);
    passwordDialog.introLabel->setWordWrap(true);

    if (dialog.exec() == QDialog::Accepted) {
        auth->setUser(passwordDialog.userNameLineEdit->text());
        auth->setPassword(passwordDialog.passwordLineEdit->text());
    }
}

void NetworkAccessManager::proxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *auth)
{
    BrowserMainWindow *mainWindow = BrowserApplication::instance()->mainWindow();

    QDialog dialog(mainWindow);
    dialog.setWindowFlags(Qt::Sheet);

    Ui::ProxyDialog proxyDialog;
    proxyDialog.setupUi(&dialog);

    proxyDialog.iconLabel->setText(QString());
    proxyDialog.iconLabel->setPixmap(mainWindow->style()->standardIcon(QStyle::SP_MessageBoxQuestion, 0, mainWindow).pixmap(32, 32));

    QString introMessage = tr("<qt>Connect to proxy \"%1\" using:</qt>");
    introMessage = introMessage.arg(Qt::escape(proxy.hostName()));
    proxyDialog.introLabel->setText(introMessage);
    proxyDialog.introLabel->setWordWrap(true);

    if (dialog.exec() == QDialog::Accepted) {
        auth->setUser(proxyDialog.userNameLineEdit->text());
        auth->setPassword(proxyDialog.passwordLineEdit->text());
    }
}

#ifndef QT_NO_OPENSSL
void NetworkAccessManager::sslErrors(QNetworkReply *reply, const QList<QSslError> &error)
{
    // check if SSL certificate has been trusted already
    QString replyHost = reply->url().host() + ":" + reply->url().port();
    if(! sslTrustedHostList.contains(replyHost)) {
        BrowserMainWindow *mainWindow = BrowserApplication::instance()->mainWindow();

        QStringList errorStrings;
        for (int i = 0; i < error.count(); ++i)
            errorStrings += error.at(i).errorString();
        QString errors = errorStrings.join(QLatin1String("\n"));
        int ret = QMessageBox::warning(mainWindow, QCoreApplication::applicationName(),
                tr("SSL Errors:\n\n%1\n\n%2\n\n"
                        "Do you want to ignore these errors for this host?").arg(reply->url().toString()).arg(errors),
                        QMessageBox::Yes | QMessageBox::No,
                        QMessageBox::No);
        if (ret == QMessageBox::Yes) {
            reply->ignoreSslErrors();
            sslTrustedHostList.append(replyHost);
        }
    }
}
#endif