Mike Tzou
5 years ago
committed by
GitHub
9 changed files with 311 additions and 229 deletions
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/*
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* Bittorrent Client using Qt and libtorrent. |
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* Copyright (C) 2015, 2018 Vladimir Golovnev <glassez@yandex.ru> |
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* Copyright (C) 2006 Christophe Dumez <chris@qbittorrent.org> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* |
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* In addition, as a special exception, the copyright holders give permission to |
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* link this program with the OpenSSL project's "OpenSSL" library (or with |
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* modified versions of it that use the same license as the "OpenSSL" library), |
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* and distribute the linked executables. You must obey the GNU General Public |
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* License in all respects for all of the code used other than "OpenSSL". If you |
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* modify file(s), you may extend this exception to your version of the file(s), |
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* but you are not obligated to do so. If you do not wish to do so, delete this |
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* exception statement from your version. |
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*/ |
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#include "downloadhandlerimpl.h" |
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#include <QTemporaryFile> |
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#include <QUrl> |
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#include "base/utils/fs.h" |
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#include "base/utils/gzip.h" |
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#include "base/utils/misc.h" |
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namespace |
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{ |
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bool saveToFile(const QByteArray &replyData, QString &filePath) |
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{ |
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QTemporaryFile tmpfile {Utils::Fs::tempPath() + "XXXXXX"}; |
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tmpfile.setAutoRemove(false); |
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if (!tmpfile.open()) |
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return false; |
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filePath = tmpfile.fileName(); |
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tmpfile.write(replyData); |
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return true; |
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} |
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} |
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DownloadHandlerImpl::DownloadHandlerImpl(const Net::DownloadRequest &downloadRequest, QObject *parent) |
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: DownloadHandler {parent} |
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, m_downloadRequest {downloadRequest} |
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{ |
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m_result.url = url(); |
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m_result.status = Net::DownloadStatus::Success; |
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} |
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DownloadHandlerImpl::~DownloadHandlerImpl() |
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{ |
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if (m_reply) |
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delete m_reply; |
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} |
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void DownloadHandlerImpl::cancel() |
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{ |
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if (m_reply) { |
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m_reply->abort(); |
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} |
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else { |
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setError(errorCodeToString(QNetworkReply::OperationCanceledError)); |
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finish(); |
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} |
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} |
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void DownloadHandlerImpl::assignNetworkReply(QNetworkReply *reply) |
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{ |
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Q_ASSERT(reply); |
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m_reply = reply; |
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m_reply->setParent(this); |
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if (m_downloadRequest.limit() > 0) |
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connect(m_reply, &QNetworkReply::downloadProgress, this, &DownloadHandlerImpl::checkDownloadSize); |
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connect(m_reply, &QNetworkReply::finished, this, &DownloadHandlerImpl::processFinishedDownload); |
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connect(m_reply, &QNetworkReply::redirected, this, &DownloadHandlerImpl::handleRedirection); |
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} |
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// Returns original url
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QString DownloadHandlerImpl::url() const |
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{ |
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return m_downloadRequest.url(); |
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} |
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const Net::DownloadRequest DownloadHandlerImpl::downloadRequest() const |
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{ |
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return m_downloadRequest; |
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} |
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void DownloadHandlerImpl::processFinishedDownload() |
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{ |
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qDebug("Download finished: %s", qUtf8Printable(url())); |
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// Check if the request was successful
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if (m_reply->error() != QNetworkReply::NoError) { |
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// Failure
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qDebug("Download failure (%s), reason: %s", qUtf8Printable(url()), qUtf8Printable(errorCodeToString(m_reply->error()))); |
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setError(errorCodeToString(m_reply->error())); |
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finish(); |
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return; |
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} |
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// Success
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m_result.data = (m_reply->rawHeader("Content-Encoding") == "gzip") |
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? Utils::Gzip::decompress(m_reply->readAll()) |
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: m_reply->readAll(); |
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if (m_downloadRequest.saveToFile()) { |
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QString filePath; |
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if (saveToFile(m_result.data, filePath)) |
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m_result.filePath = filePath; |
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else |
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setError(tr("I/O Error")); |
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} |
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finish(); |
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} |
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void DownloadHandlerImpl::checkDownloadSize(const qint64 bytesReceived, const qint64 bytesTotal) |
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{ |
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if ((bytesTotal > 0) && (bytesTotal <= m_downloadRequest.limit())) { |
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// Total number of bytes is available
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disconnect(m_reply, &QNetworkReply::downloadProgress, this, &DownloadHandlerImpl::checkDownloadSize); |
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return; |
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} |
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if ((bytesTotal > m_downloadRequest.limit()) || (bytesReceived > m_downloadRequest.limit())) { |
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m_reply->abort(); |
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setError(tr("The file size is %1. It exceeds the download limit of %2.") |
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.arg(Utils::Misc::friendlyUnit(bytesTotal) |
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, Utils::Misc::friendlyUnit(m_downloadRequest.limit()))); |
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finish(); |
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} |
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} |
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void DownloadHandlerImpl::handleRedirection(const QUrl &newUrl) |
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{ |
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// Resolve relative urls
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const QUrl resolvedUrl = newUrl.isRelative() ? m_reply->url().resolved(newUrl) : newUrl; |
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const QString newUrlString = resolvedUrl.toString(); |
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qDebug("Redirecting from %s to %s...", qUtf8Printable(m_reply->url().toString()), qUtf8Printable(newUrlString)); |
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// Redirect to magnet workaround
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if (newUrlString.startsWith("magnet:", Qt::CaseInsensitive)) { |
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qDebug("Magnet redirect detected."); |
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m_result.status = Net::DownloadStatus::RedirectedToMagnet; |
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m_result.magnet = newUrlString; |
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m_result.errorString = tr("Redirected to magnet URI."); |
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finish(); |
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return; |
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} |
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emit m_reply->redirectAllowed(); |
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} |
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void DownloadHandlerImpl::setError(const QString &error) |
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{ |
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m_result.errorString = error; |
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m_result.status = Net::DownloadStatus::Failed; |
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} |
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void DownloadHandlerImpl::finish() |
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{ |
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emit finished(m_result); |
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} |
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QString DownloadHandlerImpl::errorCodeToString(const QNetworkReply::NetworkError status) |
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{ |
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switch (status) { |
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case QNetworkReply::HostNotFoundError: |
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return tr("The remote host name was not found (invalid hostname)"); |
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case QNetworkReply::OperationCanceledError: |
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return tr("The operation was canceled"); |
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case QNetworkReply::RemoteHostClosedError: |
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return tr("The remote server closed the connection prematurely, before the entire reply was received and processed"); |
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case QNetworkReply::TimeoutError: |
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return tr("The connection to the remote server timed out"); |
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case QNetworkReply::SslHandshakeFailedError: |
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return tr("SSL/TLS handshake failed"); |
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case QNetworkReply::ConnectionRefusedError: |
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return tr("The remote server refused the connection"); |
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case QNetworkReply::ProxyConnectionRefusedError: |
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return tr("The connection to the proxy server was refused"); |
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case QNetworkReply::ProxyConnectionClosedError: |
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return tr("The proxy server closed the connection prematurely"); |
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case QNetworkReply::ProxyNotFoundError: |
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return tr("The proxy host name was not found"); |
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case QNetworkReply::ProxyTimeoutError: |
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return tr("The connection to the proxy timed out or the proxy did not reply in time to the request sent"); |
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case QNetworkReply::ProxyAuthenticationRequiredError: |
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return tr("The proxy requires authentication in order to honor the request but did not accept any credentials offered"); |
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case QNetworkReply::ContentAccessDenied: |
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return tr("The access to the remote content was denied (401)"); |
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case QNetworkReply::ContentOperationNotPermittedError: |
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return tr("The operation requested on the remote content is not permitted"); |
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case QNetworkReply::ContentNotFoundError: |
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return tr("The remote content was not found at the server (404)"); |
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case QNetworkReply::AuthenticationRequiredError: |
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return tr("The remote server requires authentication to serve the content but the credentials provided were not accepted"); |
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case QNetworkReply::ProtocolUnknownError: |
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return tr("The Network Access API cannot honor the request because the protocol is not known"); |
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case QNetworkReply::ProtocolInvalidOperationError: |
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return tr("The requested operation is invalid for this protocol"); |
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case QNetworkReply::UnknownNetworkError: |
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return tr("An unknown network-related error was detected"); |
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case QNetworkReply::UnknownProxyError: |
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return tr("An unknown proxy-related error was detected"); |
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case QNetworkReply::UnknownContentError: |
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return tr("An unknown error related to the remote content was detected"); |
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case QNetworkReply::ProtocolFailure: |
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return tr("A breakdown in protocol was detected"); |
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default: |
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return tr("Unknown error"); |
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} |
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} |
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@ -0,0 +1,67 @@ |
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/*
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* Bittorrent Client using Qt and libtorrent. |
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* Copyright (C) 2015, 2018 Vladimir Golovnev <glassez@yandex.ru> |
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* Copyright (C) 2006 Christophe Dumez <chris@qbittorrent.org> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* |
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* In addition, as a special exception, the copyright holders give permission to |
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* link this program with the OpenSSL project's "OpenSSL" library (or with |
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* modified versions of it that use the same license as the "OpenSSL" library), |
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* and distribute the linked executables. You must obey the GNU General Public |
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* License in all respects for all of the code used other than "OpenSSL". If you |
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* modify file(s), you may extend this exception to your version of the file(s), |
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* but you are not obligated to do so. If you do not wish to do so, delete this |
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* exception statement from your version. |
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*/ |
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#pragma once |
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#include <QNetworkReply> |
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#include "base/net/downloadmanager.h" |
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class QObject; |
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class QUrl; |
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class DownloadHandlerImpl : public Net::DownloadHandler |
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{ |
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Q_OBJECT |
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Q_DISABLE_COPY(DownloadHandlerImpl) |
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public: |
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explicit DownloadHandlerImpl(const Net::DownloadRequest &downloadRequest, QObject *parent); |
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~DownloadHandlerImpl() override; |
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void cancel() override; |
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QString url() const; |
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const Net::DownloadRequest downloadRequest() const; |
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void assignNetworkReply(QNetworkReply *reply); |
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private: |
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void processFinishedDownload(); |
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void checkDownloadSize(qint64 bytesReceived, qint64 bytesTotal); |
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void handleRedirection(const QUrl &newUrl); |
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void setError(const QString &error); |
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void finish(); |
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static QString errorCodeToString(QNetworkReply::NetworkError status); |
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QNetworkReply *m_reply = nullptr; |
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const Net::DownloadRequest m_downloadRequest; |
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Net::DownloadResult m_result; |
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}; |
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