transmission/libtransmission/torrent.h

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/******************************************************************************
* $Id$
*
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* Copyright (c) 2005-2008 Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#ifndef __TRANSMISSION__
#error only libtransmission should #include this header.
#endif
#ifndef TR_TORRENT_H
#define TR_TORRENT_H 1
struct tr_bandwidth;
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struct tr_ratecontrol;
/**
*** Package-visible ctor API
**/
void tr_ctorSetSave( tr_ctor * ctor,
tr_bool saveMetadataInOurTorrentsDir );
int tr_ctorGetSave( const tr_ctor * ctor );
/**
***
**/
/* just like tr_torrentSetFileDLs but doesn't trigger a fastresume save */
void tr_torrentInitFileDLs( tr_torrent * tor,
tr_file_index_t * files,
tr_file_index_t fileCount,
tr_bool do_download );
tr_bool tr_torrentIsPrivate( const tr_torrent * );
void tr_torrentRecheckCompleteness( tr_torrent * );
void tr_torrentResetTransferStats( tr_torrent * );
void tr_torrentSetHasPiece( tr_torrent * tor,
tr_piece_index_t pieceIndex,
tr_bool has );
void tr_torrentLock( const tr_torrent * session );
void tr_torrentUnlock( const tr_torrent * session );
tr_bool tr_torrentIsSeed( const tr_torrent * session );
void tr_torrentChangeMyPort( tr_torrent * session );
tr_bool tr_torrentExists( const tr_session * session,
const uint8_t * hash );
tr_torrent* tr_torrentFindFromId( tr_session * session,
int id );
tr_torrent* tr_torrentFindFromHash( tr_session * session,
const uint8_t * hash );
tr_torrent* tr_torrentFindFromHashString( tr_session * session,
const char * hashString );
tr_torrent* tr_torrentFindFromObfuscatedHash( tr_session * session,
const uint8_t * hash );
tr_bool tr_torrentAllowsPex( const tr_torrent * );
tr_bool tr_torrentIsPieceTransferAllowed( const tr_torrent * torrent,
tr_direction direction );
/* get the index of this piece's first block */
#define tr_torPieceFirstBlock( tor, piece ) ( ( piece ) *\
( tor )->blockCountInPiece )
/* what piece index is this block in? */
#define tr_torBlockPiece( tor, block ) ( ( block ) /\
( tor )->blockCountInPiece )
/* how many blocks are in this piece? */
#define tr_torPieceCountBlocks( tor, piece ) \
( ( ( piece ) ==\
( ( tor )->info.pieceCount - \
1 ) ) ? ( tor )->blockCountInLastPiece : ( tor )->blockCountInPiece )
/* how many bytes are in this piece? */
#define tr_torPieceCountBytes( tor, piece ) \
( ( ( piece ) ==\
( ( tor )->info.pieceCount - \
1 ) ) ? ( tor )->lastPieceSize : ( tor )->info.pieceSize )
/* how many bytes are in this block? */
#define tr_torBlockCountBytes( tor, block ) \
( ( ( block ) ==\
( ( tor )->blockCount - \
1 ) ) ? ( tor )->lastBlockSize : ( tor )->blockSize )
#define tr_block( a, b ) _tr_block( tor, a, b )
tr_block_index_t _tr_block( const tr_torrent * tor,
tr_piece_index_t index,
uint32_t offset );
tr_bool tr_torrentReqIsValid( const tr_torrent * tor,
tr_piece_index_t index,
uint32_t offset,
uint32_t length );
uint64_t tr_pieceOffset( const tr_torrent * tor,
tr_piece_index_t index,
uint32_t offset,
uint32_t length );
void tr_torrentInitFilePriority( tr_torrent * tor,
tr_file_index_t fileIndex,
tr_priority_t priority );
int tr_torrentCountUncheckedPieces( const tr_torrent * );
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tr_bool tr_torrentIsPieceChecked( const tr_torrent * tor,
tr_piece_index_t piece );
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tr_bool tr_torrentIsFileChecked( const tr_torrent * tor,
tr_file_index_t file );
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void tr_torrentSetPieceChecked( tr_torrent * tor,
tr_piece_index_t piece,
tr_bool isChecked );
void tr_torrentSetFileChecked( tr_torrent * tor,
tr_file_index_t file,
tr_bool isChecked );
void tr_torrentUncheck( tr_torrent * tor );
int tr_torrentPromoteTracker( tr_torrent * tor,
int trackerIndex );
time_t* tr_torrentGetMTimes( const tr_torrent * tor,
size_t * setmeCount );
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typedef enum
{
TR_VERIFY_NONE,
TR_VERIFY_WAIT,
TR_VERIFY_NOW
}
tr_verify_state;
struct tr_torrent
{
tr_session * session;
tr_info info;
tr_speedlimit speedLimitMode[2];
struct tr_ratecontrol * swarmSpeed;
int error;
char errorString[128];
uint8_t obfuscatedHash[SHA_DIGEST_LENGTH];
/* If the initiator of the connection receives a handshake in which the
* peer_id does not match the expected peerid, then the initiator is
* expected to drop the connection. Note that the initiator presumably
* received the peer information from the tracker, which includes the
* peer_id that was registered by the peer. The peer_id from the tracker
* and in the handshake are expected to match.
*/
uint8_t * peer_id;
/* Where to download */
char * downloadDir;
/* How many bytes we ask for per request */
uint32_t blockSize;
tr_block_index_t blockCount;
uint32_t lastBlockSize;
uint32_t lastPieceSize;
uint32_t blockCountInPiece;
uint32_t blockCountInLastPiece;
struct tr_completion * completion;
struct tr_bitfield * checkedPieces;
tr_completeness completeness;
struct tr_tracker * tracker;
struct tr_publisher_tag * trackerSubscription;
uint64_t downloadedCur;
uint64_t downloadedPrev;
uint64_t uploadedCur;
uint64_t uploadedPrev;
uint64_t corruptCur;
uint64_t corruptPrev;
time_t addedDate;
time_t activityDate;
time_t doneDate;
time_t startDate;
tr_torrent_completeness_func * completeness_func;
void * completeness_func_user_data;
tr_bool isRunning;
tr_bool isDeleting;
uint16_t maxConnectedPeers;
tr_verify_state verifyState;
time_t lastStatTime;
tr_stat stats;
tr_torrent * next;
int uniqueId;
struct tr_bandwidth * bandwidth;
};
#endif