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TorrentDownload.h

/*
FatRat download manager
http://fatrat.dolezel.info

Copyright (C) 2006-2008 Lubos Dolezel <lubos a dolezel.info>

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.

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 exemption, Luboš Doležel gives permission
to link the code of FatRat 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".
*/

#ifndef TORRENTDOWNLOAD_H
#define TORRENTDOWNLOAD_H

#include "config.h"

#ifndef WITH_BITTORRENT
#     error This file is not supposed to be included!
#endif

#include "Transfer.h"
#include "WidgetHostChild.h"
#include <QTimer>
#include <QMutex>
#include <QHttp>
#include <QTemporaryFile>
#include <QRegExp>
#include <vector>
#include <libtorrent/session.hpp>
#include <libtorrent/torrent_handle.hpp>
#include "Proxy.h"

class TorrentWorker;
class TorrentDetails;
class RssFetcher;
class QLabel;

class TorrentDownload : public Transfer
{
Q_OBJECT
public:
      TorrentDownload(bool bAuto = false);
      virtual ~TorrentDownload();
      
      static Transfer* createInstance() { return new TorrentDownload; }
      static WidgetHostChild* createSettingsWidget(QWidget* w,QIcon& i);
      static int acceptable(QString url, bool);
      
      static void globalInit();
      static void applySettings();
      static void globalExit();
      
      static QByteArray bencode_simple(libtorrent::entry& e);
      static QString bencode(libtorrent::entry& e);
      static libtorrent::entry bdecode_simple(QByteArray d);
      static libtorrent::entry bdecode(QString d);
      
      static libtorrent::proxy_settings proxyToLibtorrent(Proxy p);
      
      virtual void init(QString source, QString target);
      virtual void setObject(QString source);
      
      virtual void changeActive(bool nowActive);
      virtual void setSpeedLimits(int down, int up);
      
      virtual QString dataPath(bool bDirect) const;
      
      virtual QString object() const;
      virtual QString myClass() const { return "TorrentDownload"; }
      virtual QString name() const;
      virtual QString message() const;
      virtual void speeds(int& down, int& up) const;
      virtual qulonglong total() const;
      virtual qulonglong done() const;
      
      virtual void load(const QDomNode& map);
      virtual void save(QDomDocument& doc, QDomNode& map) const;
      virtual void fillContextMenu(QMenu& menu);
      virtual QObject* createDetailsWidget(QWidget* widget);
      virtual WidgetHostChild* createOptionsWidget(QWidget* w);
      
      qint64 totalDownload() const { return m_nPrevDownload + m_status.total_payload_download; }
      qint64 totalUpload() const { return m_nPrevUpload + m_status.total_payload_upload; }
public slots:
      void downloadTorrent(QString source);
private:
      void createDefaultPriorityList();
      bool storeTorrent(QString orig);
      bool storeTorrent();
      QString storedTorrentName() const;
private slots:
      void torrentFileDone(bool error);
      void forceReannounce();
      void forceRecheck();
protected:
      libtorrent::torrent_handle m_handle;
      boost::intrusive_ptr<libtorrent::torrent_info> m_info;
      libtorrent::torrent_status m_status;
      
      QString m_strError, m_strTarget;
      qint64 m_nPrevDownload, m_nPrevUpload;
      std::vector<int> m_vecPriorities;
      bool m_bHasHashCheck, m_bAuto;
      
      QHttp* m_pFileDownload;
      QTemporaryFile* m_pFileDownloadTemp;
      
      // seeding limits
      double m_seedLimitRatio;
      int m_seedLimitUpload;
      
      static libtorrent::session* m_session;
      static TorrentWorker* m_worker;
      static bool m_bDHT;
      static QList<QRegExp> m_listBTLinks;
      static QLabel* m_labelDHTStats;
      
      friend class TorrentWorker;
      friend class TorrentDetails;
      friend class TorrentPiecesModel;
      friend class TorrentPeersModel;
      friend class TorrentFilesModel;
      friend class TorrentProgressDelegate;
      friend class TorrentOptsWidget;
      friend class TorrentSettings;
      friend class SettingsRssForm;
};

class TorrentWorker : public QObject
{
Q_OBJECT
public:
      TorrentWorker();
      void addObject(TorrentDownload* d);
      void removeObject(TorrentDownload* d);
      // To reduce QTimer usage
      void setDetailsObject(TorrentDetails* d);
      TorrentDownload* getByHandle(libtorrent::torrent_handle handle) const;
public slots:
      void doWork();
private:
      QTimer m_timer;
      QMutex m_mutex;
      QList<TorrentDownload*> m_objects;
};

#endif

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