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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qnetworkproxy.h"

#include <QtCore/QByteArray>
#include <QtCore/QUrl>

#ifndef QT_NO_NETWORKPROXY

/*
 * Construct a proxy from the environment variable http_proxy.
 * Or no system proxy. Just return a list with NoProxy.
 */

QT_BEGIN_NAMESPACE

QList<QNetworkProxy> QNetworkProxyFactory::systemProxyForQuery(const QNetworkProxyQuery &query)
{
    QList<QNetworkProxy> proxyList;

    const QString queryProtocol = query.protocolTag().toLower();
    QByteArray proxy_env;

    if (queryProtocol == QLatin1String("http"))
        proxy_env = qgetenv("http_proxy");
    else if (queryProtocol == QLatin1String("https"))
        proxy_env = qgetenv("https_proxy");
    else if (queryProtocol == QLatin1String("ftp"))
        proxy_env = qgetenv("ftp_proxy");
    else
        proxy_env = qgetenv("all_proxy");

    // Fallback to http_proxy is no protocol specific proxy was found
    if (proxy_env.isEmpty())
        proxy_env = qgetenv("http_proxy");

    if (!proxy_env.isEmpty()) {
        QUrl url = QUrl(QString::fromLocal8Bit(proxy_env));
        if (url.scheme() == QLatin1String("socks5")) {
            QNetworkProxy proxy(QNetworkProxy::Socks5Proxy, url.host(),
                    url.port() ? url.port() : 1080, url.userName(), url.password());
            proxyList << proxy;
        } else if (url.scheme() == QLatin1String("socks5h")) {
            QNetworkProxy proxy(QNetworkProxy::Socks5Proxy, url.host(),
                    url.port() ? url.port() : 1080, url.userName(), url.password());
            proxy.setCapabilities(QNetworkProxy::HostNameLookupCapability);
            proxyList << proxy;
        } else if (url.scheme() == QLatin1String("http") || url.scheme().isEmpty()) {
            QNetworkProxy proxy(QNetworkProxy::HttpProxy, url.host(),
                    url.port() ? url.port() : 8080, url.userName(), url.password());
            proxyList << proxy;
        }
    }
    if (proxyList.isEmpty())
        proxyList << QNetworkProxy::NoProxy;

    return proxyList;
}

QT_END_NAMESPACE

#endif