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/***************************************************************************
* Copyright (C) 2005 by *
* Joris Guisson <joris.guisson@gmail.com> *
* Ivan Vasic <ivasic@gmail.com> *
* *
* 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. *
***************************************************************************/
#ifndef BTTORRENT_H
#define BTTORRENT_H
#include <kurl.h>
#include <qvaluevector.h>
#include <util/sha1hash.h>
#include <util/constants.h>
#include <interfaces/torrentinterface.h>
#include "globals.h"
#include "peerid.h"
#include "torrentfile.h"
namespace bt
{
class BNode;
class BValueNode;
class BDictNode;
class BListNode;
struct TrackerTier
{
KURL::List urls;
TrackerTier* next;
TrackerTier() : next(0)
{}
~TrackerTier()
{
delete next;
}
};
/**
* @author Joris Guisson
* @brief Loads a .torrent file
*
* Loads a torrent file and calculates some miscelanious other data,
* like the info_hash and the peer_id.
*/
class Torrent
{
public:
Torrent();
virtual ~Torrent();
/**
* Load a .torrent file.
* @param file The file
* @param verbose Wether to print information to the log
* @throw Error if something goes wrong
*/
void load(const QString & file,bool verbose);
/**
* Load a .torrent file.
* @param data The data
* @param verbose Wether to print information to the log
* @throw Error if something goes wrong
*/
void load(const QByteArray & data,bool verbose);
void debugPrintInfo();
/// Get the number of chunks.
Uint32 getNumChunks() const {return hash_pieces.size();}
/// Get the size of a chunk.
Uint64 getChunkSize() const {return piece_length;}
/// Get the info_hash.
const SHA1Hash & getInfoHash() const {return info_hash;}
/// Get our peer_id.
const PeerID & getPeerID() const {return peer_id;}
/// Get the file size in number of bytes.
Uint64 getFileLength() const {return file_length;}
/// Get the suggested name.
QString getNameSuggestion() const {return name_suggestion;}
/**
* Verify wether a hash matches the hash
* of a Chunk
* @param h The hash
* @param index The index of the chunk
* @return true if they match
*/
bool verifyHash(const SHA1Hash & h,Uint32 index);
/// Get the number of tracker URL's
unsigned int getNumTrackerURLs() const;
/**
* Get the hash of a Chunk. Throws an Error
* if idx is out of bounds.
* @param idx Index of Chunk
* @return The SHA1 hash of the chunk
*/
const SHA1Hash & getHash(Uint32 idx) const;
/// See if we have a multi file torrent.
bool isMultiFile() const {return files.count() > 0;}
/// Get the number of files in a multi file torrent.
/// If we have a single file torrent, this will return 0.
Uint32 getNumFiles() const {return files.count();}
/**
* Get a TorrentFile. If the index is out of range, or
* we have a single file torrent we return a null TorrentFile.
* @param idx Index of the file
* @param A reference to the file
*/
TorrentFile & getFile(Uint32 idx);
/**
* Get a TorrentFile. If the index is out of range, or
* we have a single file torrent we return a null TorrentFile.
* @param idx Index of the file
* @param A reference to the file
*/
const TorrentFile & getFile(Uint32 idx) const;
/**
* Calculate in which file(s) a Chunk lies. A list will
* get filled with the indices of all the files. The list gets cleared at
* the beginning. If something is wrong only the list will
* get cleared.
* @param chunk The index of the chunk
* @param file_list This list will be filled with all the indices
*/
void calcChunkPos(Uint32 chunk,QValueList<Uint32> & file_list) const;
/**
* Checks if torrent file is audio or video.
**/
bool isMultimedia() const;
/// See if the torrent is private
bool isPrivate() const {return priv_torrent;}
///Gets a pointer to AnnounceList
const TrackerTier* getTrackerList() const { return trackers; }
/// Get the number of initial DHT nodes
Uint32 getNumDHTNodes() const {return nodes.count();}
/// Get a DHT node
const kt::DHTNode & getDHTNode(Uint32 i) {return nodes[i];}
/**
* Update the percentage of all files.
* @param bs The BitSet with all downloaded chunks
*/
void updateFilePercentage(const BitSet & bs);
/**
* Update the percentage of a all files which have a particular chunk.
* @param bs The BitSet with all downloaded chunks
*/
void updateFilePercentage(Uint32 chunk,const BitSet & bs);
private:
void loadInfo(BDictNode* node);
void loadTrackerURL(BValueNode* node);
void loadPieceLength(BValueNode* node);
void loadFileLength(BValueNode* node);
void loadHash(BValueNode* node);
void loadName(BValueNode* node);
void loadFiles(BListNode* node);
void loadNodes(BListNode* node);
void loadAnnounceList(BNode* node);
bool checkPathForDirectoryTraversal(const QString & p);
private:
TrackerTier* trackers;
QString name_suggestion;
Uint64 piece_length;
Uint64 file_length;
SHA1Hash info_hash;
PeerID peer_id;
QValueVector<SHA1Hash> hash_pieces;
QValueVector<TorrentFile> files;
QValueVector<kt::DHTNode> nodes;
QString encoding;
bool priv_torrent;
};
}
#endif
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