qBittorrent/src/base/bittorrent/tracker.h
2020-12-12 19:41:32 +00:00

107 lines
3.5 KiB
C++

/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2019 Mike Tzou (Chocobo1)
* Copyright (C) 2015 Vladimir Golovnev <glassez@yandex.ru>
* Copyright (C) 2010 Christophe Dumez <chris@qbittorrent.org>
*
* 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.
*/
#pragma once
#include <string>
#include <libtorrent/entry.hpp>
#include <QHash>
#include <QObject>
#include <QSet>
#include "base/bittorrent/infohash.h"
#include "base/http/irequesthandler.h"
#include "base/http/responsebuilder.h"
namespace Http
{
class Server;
}
namespace BitTorrent
{
struct Peer
{
QByteArray peerId;
ushort port = 0; // self-claimed by peer, might not be the same as socket port
bool isSeeder = false;
// caching precomputed values
lt::entry::string_type address;
lt::entry::string_type endpoint;
QByteArray uniqueID() const;
};
bool operator==(const Peer &left, const Peer &right);
bool operator!=(const Peer &left, const Peer &right);
uint qHash(const Peer &key, uint seed);
// *Basic* Bittorrent tracker implementation
// [BEP-3] The BitTorrent Protocol Specification
// also see: https://wiki.theory.org/index.php/BitTorrentSpecification#Tracker_HTTP.2FHTTPS_Protocol
class Tracker final : public QObject, public Http::IRequestHandler, private Http::ResponseBuilder
{
Q_OBJECT
Q_DISABLE_COPY(Tracker)
struct TrackerAnnounceRequest;
struct TorrentStats
{
qint64 seeders = 0;
QSet<Peer> peers;
void setPeer(const Peer &peer);
bool removePeer(const Peer &peer);
};
public:
explicit Tracker(QObject *parent = nullptr);
bool start();
private:
Http::Response processRequest(const Http::Request &request, const Http::Environment &env) override;
void processAnnounceRequest();
void registerPeer(const TrackerAnnounceRequest &announceReq);
void unregisterPeer(const TrackerAnnounceRequest &announceReq);
void prepareAnnounceResponse(const TrackerAnnounceRequest &announceReq);
Http::Server *m_server;
Http::Request m_request;
Http::Environment m_env;
QHash<InfoHash, TorrentStats> m_torrents;
};
}