qBittorrent/src/downloadthread.cpp
2012-05-20 16:03:10 +03:00

246 lines
10 KiB
C++

/*
* Bittorrent Client using Qt4 and libtorrent.
* Copyright (C) 2006 Christophe Dumez
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* Contact : chris@qbittorrent.org
*/
#include <QTemporaryFile>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkProxy>
#include <QNetworkCookieJar>
#include "downloadthread.h"
#include "preferences.h"
#ifndef DISABLE_GUI
#include "rsssettings.h"
#endif
#include "qinisettings.h"
/** Download Thread **/
DownloadThread::DownloadThread(QObject* parent) : QObject(parent) {
connect(&m_networkManager, SIGNAL(finished (QNetworkReply*)), this, SLOT(processDlFinished(QNetworkReply*)));
#ifndef QT_NO_OPENSSL
connect(&m_networkManager, SIGNAL(sslErrors(QNetworkReply*,QList<QSslError>)), this, SLOT(ignoreSslErrors(QNetworkReply*,QList<QSslError>)));
#endif
}
void DownloadThread::processDlFinished(QNetworkReply* reply) {
QString url = reply->url().toString();
qDebug("Download finished: %s", qPrintable(url));
// Check if the request was successful
if (reply->error() != QNetworkReply::NoError) {
// Failure
qDebug("Download failure (%s), reason: %s", qPrintable(url), qPrintable(errorCodeToString(reply->error())));
emit downloadFailure(url, errorCodeToString(reply->error()));
reply->deleteLater();
return;
}
// Check if the server ask us to redirect somewhere lese
const QVariant redirection = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
if (redirection.isValid()) {
// We should redirect
QUrl newUrl = redirection.toUrl();
// Resolve relative urls
if (newUrl.isRelative())
newUrl = reply->url().resolved(newUrl);
const QString newUrlString = newUrl.toString();
qDebug("Redirecting from %s to %s", qPrintable(url), qPrintable(newUrlString));
m_redirectMapping.insert(newUrlString, url);
downloadUrl(newUrlString);
reply->deleteLater();
return;
}
// Checking if it was redirected, restoring initial URL
if (m_redirectMapping.contains(url)) {
url = m_redirectMapping.take(url);
}
// Success
QTemporaryFile *tmpfile = new QTemporaryFile;
tmpfile->setAutoRemove(false);
if (tmpfile->open()) {
QString filePath = tmpfile->fileName();
qDebug("Temporary filename is: %s", qPrintable(filePath));
if (reply->isOpen() || reply->open(QIODevice::ReadOnly)) {
// TODO: Support GZIP compression
tmpfile->write(reply->readAll());
tmpfile->close();
// XXX: tmpfile needs to be deleted on Windows before using the file
// or it will complain that the file is used by another process.
delete tmpfile;
// Send finished signal
emit downloadFinished(url, filePath);
} else {
delete tmpfile;
// Error when reading the request
emit downloadFailure(url, tr("I/O Error"));
}
} else {
delete tmpfile;
emit downloadFailure(url, tr("I/O Error"));
}
// Clean up
reply->deleteLater();
}
void DownloadThread::downloadTorrentUrl(const QString &url, const QList<QNetworkCookie>& cookies)
{
// Process request
QNetworkReply *reply = downloadUrl(url, cookies);
connect(reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(checkDownloadSize(qint64,qint64)));
}
QNetworkReply* DownloadThread::downloadUrl(const QString &url, const QList<QNetworkCookie>& cookies) {
// Update proxy settings
applyProxySettings();
// Set cookies
if (!cookies.empty()) {
qDebug("Setting %d cookies for url: %s", cookies.size(), qPrintable(url));
m_networkManager.cookieJar()->setCookiesFromUrl(cookies, url);
}
// Process download request
qDebug("url is %s", qPrintable(url));
const QUrl qurl = QUrl::fromEncoded(url.toUtf8());
QNetworkRequest request(qurl);
// Spoof Firefox 3.5 user agent to avoid
// Web server banning
request.setRawHeader("User-Agent", "Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5");
qDebug("Downloading %s...", request.url().toEncoded().data());
qDebug("%d cookies for this URL", m_networkManager.cookieJar()->cookiesForUrl(url).size());
for (int i=0; i<m_networkManager.cookieJar()->cookiesForUrl(url).size(); ++i) {
qDebug("%s=%s", m_networkManager.cookieJar()->cookiesForUrl(url).at(i).name().data(), m_networkManager.cookieJar()->cookiesForUrl(url).at(i).value().data());
qDebug("Domain: %s, Path: %s", qPrintable(m_networkManager.cookieJar()->cookiesForUrl(url).at(i).domain()), qPrintable(m_networkManager.cookieJar()->cookiesForUrl(url).at(i).path()));
}
return m_networkManager.get(request);
}
void DownloadThread::checkDownloadSize(qint64 bytesReceived, qint64 bytesTotal) {
QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
if (!reply) return;
if (bytesTotal > 0) {
// Total number of bytes is available
if (bytesTotal > 1048576) {
// More than 1MB, this is probably not a torrent file, aborting...
reply->abort();
reply->deleteLater();
} else {
disconnect(reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(checkDownloadSize(qint64,qint64)));
}
} else {
if (bytesReceived > 1048576) {
// More than 1MB, this is probably not a torrent file, aborting...
reply->abort();
reply->deleteLater();
}
}
}
void DownloadThread::applyProxySettings() {
QNetworkProxy proxy;
const Preferences pref;
if (pref.isProxyEnabled()) {
// Proxy enabled
proxy.setHostName(pref.getProxyIp());
proxy.setPort(pref.getProxyPort());
// Default proxy type is HTTP, we must change if it is SOCKS5
const int proxy_type = pref.getProxyType();
if (proxy_type == Proxy::SOCKS5 || proxy_type == Proxy::SOCKS5_PW) {
qDebug() << Q_FUNC_INFO << "using SOCKS proxy";
proxy.setType(QNetworkProxy::Socks5Proxy);
} else {
qDebug() << Q_FUNC_INFO << "using HTTP proxy";
proxy.setType(QNetworkProxy::HttpProxy);
}
// Authentication?
if (pref.isProxyAuthEnabled()) {
qDebug("Proxy requires authentication, authenticating");
proxy.setUser(pref.getProxyUsername());
proxy.setPassword(pref.getProxyPassword());
}
} else {
proxy.setType(QNetworkProxy::NoProxy);
}
m_networkManager.setProxy(proxy);
}
QString DownloadThread::errorCodeToString(QNetworkReply::NetworkError status) {
switch(status) {
case QNetworkReply::HostNotFoundError:
return tr("The remote host name was not found (invalid hostname)");
case QNetworkReply::OperationCanceledError:
return tr("The operation was canceled");
case QNetworkReply::RemoteHostClosedError:
return tr("The remote server closed the connection prematurely, before the entire reply was received and processed");
case QNetworkReply::TimeoutError:
return tr("The connection to the remote server timed out");
case QNetworkReply::SslHandshakeFailedError:
return tr("SSL/TLS handshake failed");
case QNetworkReply::ConnectionRefusedError:
return tr("The remote server refused the connection");
case QNetworkReply::ProxyConnectionRefusedError:
return tr("The connection to the proxy server was refused");
case QNetworkReply::ProxyConnectionClosedError:
return tr("The proxy server closed the connection prematurely");
case QNetworkReply::ProxyNotFoundError:
return tr("The proxy host name was not found");
case QNetworkReply::ProxyTimeoutError:
return tr("The connection to the proxy timed out or the proxy did not reply in time to the request sent");
case QNetworkReply::ProxyAuthenticationRequiredError:
return tr("The proxy requires authentication in order to honour the request but did not accept any credentials offered");
case QNetworkReply::ContentAccessDenied:
return tr("The access to the remote content was denied (401)");
case QNetworkReply::ContentOperationNotPermittedError:
return tr("The operation requested on the remote content is not permitted");
case QNetworkReply::ContentNotFoundError:
return tr("The remote content was not found at the server (404)");
case QNetworkReply::AuthenticationRequiredError:
return tr("The remote server requires authentication to serve the content but the credentials provided were not accepted");
case QNetworkReply::ProtocolUnknownError:
return tr("The Network Access API cannot honor the request because the protocol is not known");
case QNetworkReply::ProtocolInvalidOperationError:
return tr("The requested operation is invalid for this protocol");
case QNetworkReply::UnknownNetworkError:
return tr("An unknown network-related error was detected");
case QNetworkReply::UnknownProxyError:
return tr("An unknown proxy-related error was detected");
case QNetworkReply::UnknownContentError:
return tr("An unknown error related to the remote content was detected");
case QNetworkReply::ProtocolFailure:
return tr("A breakdown in protocol was detected");
default:
return tr("Unknown error");
}
}
#ifndef QT_NO_OPENSSL
void DownloadThread::ignoreSslErrors(QNetworkReply* reply, const QList<QSslError> &errors) {
Q_UNUSED(errors)
// Ignore all SSL errors
reply->ignoreSslErrors();
}
#endif