/* * This file Copyright (C) Mnemosyne LLC * * This file is licensed by the GPL version 2. Works owned by the * Transmission project are granted a special exemption to clause 2(b) * so that the bulk of its code can remain under the MIT license. * This exemption does not extend to derived works not owned by * the Transmission project. * * $Id$ */ #include /* signal() */ #include /* stat */ #include /* stat */ #ifndef WIN32 #include /* wait() */ #else #include #define waitpid(pid, status, options) _cwait(status, pid, WAIT_CHILD) #endif #include /* stat */ #include #include #include #include #include /* memcmp */ #include /* qsort */ #include /* remove() */ #include /* evutil_vsnprintf() */ #include "transmission.h" #include "announcer.h" #include "bandwidth.h" #include "bencode.h" #include "cache.h" #include "completion.h" #include "crypto.h" /* for tr_sha1 */ #include "resume.h" #include "fdlimit.h" /* tr_fdTorrentClose */ #include "inout.h" /* tr_ioTestPiece() */ #include "magnet.h" #include "metainfo.h" #include "peer-common.h" /* MAX_BLOCK_SIZE */ #include "peer-mgr.h" #include "platform.h" /* TR_PATH_DELIMITER_STR */ #include "ptrarray.h" #include "session.h" #include "torrent.h" #include "torrent-magnet.h" #include "trevent.h" /* tr_runInEventThread() */ #include "utils.h" #include "verify.h" #include "version.h" /*** **** ***/ #define tr_deeplog_tor( tor, ... ) \ do { \ if( tr_deepLoggingIsActive( ) ) \ tr_deepLog( __FILE__, __LINE__, tr_torrentName( tor ), __VA_ARGS__ ); \ } while( 0 ) /*** **** ***/ const char * tr_torrentName( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tor->info.name; } int tr_torrentId( const tr_torrent * tor ) { return tor->uniqueId; } tr_torrent* tr_torrentFindFromId( tr_session * session, int id ) { tr_torrent * tor = NULL; while(( tor = tr_torrentNext( session, tor ))) if( tor->uniqueId == id ) return tor; return NULL; } tr_torrent* tr_torrentFindFromHashString( tr_session * session, const char * str ) { tr_torrent * tor = NULL; while(( tor = tr_torrentNext( session, tor ))) if( !evutil_ascii_strcasecmp( str, tor->info.hashString ) ) return tor; return NULL; } tr_torrent* tr_torrentFindFromHash( tr_session * session, const uint8_t * torrentHash ) { tr_torrent * tor = NULL; while(( tor = tr_torrentNext( session, tor ))) if( *tor->info.hash == *torrentHash ) if( !memcmp( tor->info.hash, torrentHash, SHA_DIGEST_LENGTH ) ) return tor; return NULL; } tr_torrent* tr_torrentFindFromMagnetLink( tr_session * session, const char * magnet ) { tr_magnet_info * info; tr_torrent * tor = NULL; if(( info = tr_magnetParse( magnet ))) { tor = tr_torrentFindFromHash( session, info->hash ); tr_magnetFree( info ); } return tor; } tr_torrent* tr_torrentFindFromObfuscatedHash( tr_session * session, const uint8_t * obfuscatedTorrentHash ) { tr_torrent * tor = NULL; while(( tor = tr_torrentNext( session, tor ))) if( !memcmp( tor->obfuscatedHash, obfuscatedTorrentHash, SHA_DIGEST_LENGTH ) ) return tor; return NULL; } bool tr_torrentIsPieceTransferAllowed( const tr_torrent * tor, tr_direction direction ) { int limit; bool allowed = true; if( tr_torrentUsesSpeedLimit( tor, direction ) ) if( tr_torrentGetSpeedLimit_Bps( tor, direction ) <= 0 ) allowed = false; if( tr_torrentUsesSessionLimits( tor ) ) if( tr_sessionGetActiveSpeedLimit_Bps( tor->session, direction, &limit ) ) if( limit <= 0 ) allowed = false; return allowed; } /*** **** PER-TORRENT UL / DL SPEEDS ***/ void tr_torrentSetSpeedLimit_Bps( tr_torrent * tor, tr_direction dir, int Bps ) { assert( tr_isTorrent( tor ) ); assert( tr_isDirection( dir ) ); assert( Bps >= 0 ); if( tr_bandwidthSetDesiredSpeed_Bps( &tor->bandwidth, dir, Bps ) ) tr_torrentSetDirty( tor ); } void tr_torrentSetSpeedLimit_KBps( tr_torrent * tor, tr_direction dir, int KBps ) { tr_torrentSetSpeedLimit_Bps( tor, dir, toSpeedBytes( KBps ) ); } int tr_torrentGetSpeedLimit_Bps( const tr_torrent * tor, tr_direction dir ) { assert( tr_isTorrent( tor ) ); assert( tr_isDirection( dir ) ); return tr_bandwidthGetDesiredSpeed_Bps( &tor->bandwidth, dir ); } int tr_torrentGetSpeedLimit_KBps( const tr_torrent * tor, tr_direction dir ) { return toSpeedKBps( tr_torrentGetSpeedLimit_Bps( tor, dir ) ); } void tr_torrentUseSpeedLimit( tr_torrent * tor, tr_direction dir, bool do_use ) { assert( tr_isTorrent( tor ) ); assert( tr_isDirection( dir ) ); if( tr_bandwidthSetLimited( &tor->bandwidth, dir, do_use ) ) tr_torrentSetDirty( tor ); } bool tr_torrentUsesSpeedLimit( const tr_torrent * tor, tr_direction dir ) { assert( tr_isTorrent( tor ) ); assert( tr_isDirection( dir ) ); return tr_bandwidthIsLimited( &tor->bandwidth, dir ); } void tr_torrentUseSessionLimits( tr_torrent * tor, bool doUse ) { bool changed; assert( tr_isTorrent( tor ) ); changed = tr_bandwidthHonorParentLimits( &tor->bandwidth, TR_UP, doUse ); changed |= tr_bandwidthHonorParentLimits( &tor->bandwidth, TR_DOWN, doUse ); if( changed ) tr_torrentSetDirty( tor ); } bool tr_torrentUsesSessionLimits( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tr_bandwidthAreParentLimitsHonored( &tor->bandwidth, TR_UP ); } /*** **** ***/ void tr_torrentSetRatioMode( tr_torrent * tor, tr_ratiolimit mode ) { assert( tr_isTorrent( tor ) ); assert( mode==TR_RATIOLIMIT_GLOBAL || mode==TR_RATIOLIMIT_SINGLE || mode==TR_RATIOLIMIT_UNLIMITED ); if( mode != tor->ratioLimitMode ) { tor->ratioLimitMode = mode; tr_torrentSetDirty( tor ); } } tr_ratiolimit tr_torrentGetRatioMode( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tor->ratioLimitMode; } void tr_torrentSetRatioLimit( tr_torrent * tor, double desiredRatio ) { assert( tr_isTorrent( tor ) ); if( (int)(desiredRatio*100.0) != (int)(tor->desiredRatio*100.0) ) { tor->desiredRatio = desiredRatio; tr_torrentSetDirty( tor ); } } double tr_torrentGetRatioLimit( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tor->desiredRatio; } bool tr_torrentGetSeedRatio( const tr_torrent * tor, double * ratio ) { bool isLimited; switch( tr_torrentGetRatioMode( tor ) ) { case TR_RATIOLIMIT_SINGLE: isLimited = true; if( ratio ) *ratio = tr_torrentGetRatioLimit( tor ); break; case TR_RATIOLIMIT_GLOBAL: isLimited = tr_sessionIsRatioLimited( tor->session ); if( isLimited && ratio ) *ratio = tr_sessionGetRatioLimit( tor->session ); break; default: /* TR_RATIOLIMIT_UNLIMITED */ isLimited = false; break; } return isLimited; } /* returns true if the seed ratio applies -- * it applies if the torrent's a seed AND it has a seed ratio set */ static bool tr_torrentGetSeedRatioBytes( tr_torrent * tor, uint64_t * setmeLeft, uint64_t * setmeGoal ) { double seedRatio; bool seedRatioApplies = false; if( tr_torrentGetSeedRatio( tor, &seedRatio ) ) { const uint64_t u = tor->uploadedCur + tor->uploadedPrev; const uint64_t d = tor->downloadedCur + tor->downloadedPrev; const uint64_t baseline = d ? d : tr_cpSizeWhenDone( &tor->completion ); const uint64_t goal = baseline * seedRatio; if( setmeLeft ) *setmeLeft = goal > u ? goal - u : 0; if( setmeGoal ) *setmeGoal = goal; seedRatioApplies = tr_torrentIsSeed( tor ); } return seedRatioApplies; } static bool tr_torrentIsSeedRatioDone( tr_torrent * tor ) { uint64_t bytesLeft; return tr_torrentGetSeedRatioBytes( tor, &bytesLeft, NULL ) && !bytesLeft; } /*** **** ***/ void tr_torrentSetIdleMode( tr_torrent * tor, tr_idlelimit mode ) { assert( tr_isTorrent( tor ) ); assert( mode==TR_IDLELIMIT_GLOBAL || mode==TR_IDLELIMIT_SINGLE || mode==TR_IDLELIMIT_UNLIMITED ); if( mode != tor->idleLimitMode ) { tor->idleLimitMode = mode; tr_torrentSetDirty( tor ); } } tr_idlelimit tr_torrentGetIdleMode( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tor->idleLimitMode; } void tr_torrentSetIdleLimit( tr_torrent * tor, uint16_t idleMinutes ) { assert( tr_isTorrent( tor ) ); if( idleMinutes > 0 ) { tor->idleLimitMinutes = idleMinutes; tr_torrentSetDirty( tor ); } } uint16_t tr_torrentGetIdleLimit( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tor->idleLimitMinutes; } bool tr_torrentGetSeedIdle( const tr_torrent * tor, uint16_t * idleMinutes ) { bool isLimited; switch( tr_torrentGetIdleMode( tor ) ) { case TR_IDLELIMIT_SINGLE: isLimited = true; if( idleMinutes ) *idleMinutes = tr_torrentGetIdleLimit( tor ); break; case TR_IDLELIMIT_GLOBAL: isLimited = tr_sessionIsIdleLimited( tor->session ); if( isLimited && idleMinutes ) *idleMinutes = tr_sessionGetIdleLimit( tor->session ); break; default: /* TR_IDLELIMIT_UNLIMITED */ isLimited = false; break; } return isLimited; } static bool tr_torrentIsSeedIdleLimitDone( tr_torrent * tor ) { uint16_t idleMinutes; return tr_torrentGetSeedIdle( tor, &idleMinutes ) && difftime(tr_time(), MAX(tor->startDate, tor->activityDate)) >= idleMinutes * 60u; } /*** **** ***/ void tr_torrentCheckSeedLimit( tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); if( !tor->isRunning || !tr_torrentIsSeed( tor ) ) return; /* if we're seeding and reach our seed ratio limit, stop the torrent */ if( tr_torrentIsSeedRatioDone( tor ) ) { tr_torinf( tor, "Seed ratio reached; pausing torrent" ); tor->isStopping = true; /* maybe notify the client */ if( tor->ratio_limit_hit_func != NULL ) tor->ratio_limit_hit_func( tor, tor->ratio_limit_hit_func_user_data ); } /* if we're seeding and reach our inactiviy limit, stop the torrent */ else if( tr_torrentIsSeedIdleLimitDone( tor ) ) { tr_torinf( tor, "Seeding idle limit reached; pausing torrent" ); tor->isStopping = true; tor->finishedSeedingByIdle = true; /* maybe notify the client */ if( tor->idle_limit_hit_func != NULL ) tor->idle_limit_hit_func( tor, tor->idle_limit_hit_func_user_data ); } } /*** **** ***/ void tr_torrentSetLocalError( tr_torrent * tor, const char * fmt, ... ) { va_list ap; assert( tr_isTorrent( tor ) ); va_start( ap, fmt ); tor->error = TR_STAT_LOCAL_ERROR; tor->errorTracker[0] = '\0'; evutil_vsnprintf( tor->errorString, sizeof( tor->errorString ), fmt, ap ); va_end( ap ); tr_torerr( tor, "%s", tor->errorString ); if( tor->isRunning ) tor->isStopping = true; } static void tr_torrentClearError( tr_torrent * tor ) { tor->error = TR_STAT_OK; tor->errorString[0] = '\0'; tor->errorTracker[0] = '\0'; } static void onTrackerResponse( tr_torrent * tor, const tr_tracker_event * event, void * unused UNUSED ) { switch( event->messageType ) { case TR_TRACKER_PEERS: { size_t i; const int8_t seedProbability = event->seedProbability; const bool allAreSeeds = seedProbability == 100; if( allAreSeeds ) tr_tordbg( tor, "Got %zu seeds from tracker", event->pexCount ); else tr_tordbg( tor, "Got %zu peers from tracker", event->pexCount ); for( i = 0; i < event->pexCount; ++i ) tr_peerMgrAddPex( tor, TR_PEER_FROM_TRACKER, &event->pex[i], seedProbability ); if( allAreSeeds && tr_torrentIsPrivate( tor ) ) tr_peerMgrMarkAllAsSeeds( tor ); break; } case TR_TRACKER_WARNING: tr_torerr( tor, _( "Tracker warning: \"%s\"" ), event->text ); tor->error = TR_STAT_TRACKER_WARNING; tr_strlcpy( tor->errorTracker, event->tracker, sizeof( tor->errorTracker ) ); tr_strlcpy( tor->errorString, event->text, sizeof( tor->errorString ) ); break; case TR_TRACKER_ERROR: tr_torerr( tor, _( "Tracker error: \"%s\"" ), event->text ); tor->error = TR_STAT_TRACKER_ERROR; tr_strlcpy( tor->errorTracker, event->tracker, sizeof( tor->errorTracker ) ); tr_strlcpy( tor->errorString, event->text, sizeof( tor->errorString ) ); break; case TR_TRACKER_ERROR_CLEAR: if( tor->error != TR_STAT_LOCAL_ERROR ) tr_torrentClearError( tor ); break; } } /*** **** **** TORRENT INSTANTIATION **** ***/ static tr_piece_index_t getBytePiece( const tr_info * info, uint64_t byteOffset ) { assert( info ); assert( info->pieceSize != 0 ); return byteOffset / info->pieceSize; } static void initFilePieces( tr_info * info, tr_file_index_t fileIndex ) { tr_file * file; uint64_t firstByte, lastByte; assert( info ); assert( fileIndex < info->fileCount ); file = &info->files[fileIndex]; firstByte = file->offset; lastByte = firstByte + ( file->length ? file->length - 1 : 0 ); file->firstPiece = getBytePiece( info, firstByte ); file->lastPiece = getBytePiece( info, lastByte ); } static int pieceHasFile( tr_piece_index_t piece, const tr_file * file ) { return ( file->firstPiece <= piece ) && ( piece <= file->lastPiece ); } static tr_priority_t calculatePiecePriority( const tr_torrent * tor, tr_piece_index_t piece, int fileHint ) { tr_file_index_t i; tr_priority_t priority = TR_PRI_LOW; /* find the first file that has data in this piece */ if( fileHint >= 0 ) { i = fileHint; while( i > 0 && pieceHasFile( piece, &tor->info.files[i - 1] ) ) --i; } else { for( i = 0; i < tor->info.fileCount; ++i ) if( pieceHasFile( piece, &tor->info.files[i] ) ) break; } /* the piece's priority is the max of the priorities * of all the files in that piece */ for( ; i < tor->info.fileCount; ++i ) { const tr_file * file = &tor->info.files[i]; if( !pieceHasFile( piece, file ) ) break; priority = MAX( priority, file->priority ); /* when dealing with multimedia files, getting the first and last pieces can sometimes allow you to preview it a bit before it's fully downloaded... */ if( file->priority >= TR_PRI_NORMAL ) if( file->firstPiece == piece || file->lastPiece == piece ) priority = TR_PRI_HIGH; } return priority; } static void tr_torrentInitFilePieces( tr_torrent * tor ) { int * firstFiles; tr_file_index_t f; tr_piece_index_t p; uint64_t offset = 0; tr_info * inf = &tor->info; /* assign the file offsets */ for( f=0; ffileCount; ++f ) { inf->files[f].offset = offset; offset += inf->files[f].length; initFilePieces( inf, f ); } /* build the array of first-file hints to give calculatePiecePriority */ firstFiles = tr_new( int, inf->pieceCount ); for( p=f=0; ppieceCount; ++p ) { while( inf->files[f].lastPiece < p ) ++f; firstFiles[p] = f; } #if 0 /* test to confirm the first-file hints are correct */ for( p=0; ppieceCount; ++p ) { f = firstFiles[p]; assert( inf->files[f].firstPiece <= p ); assert( inf->files[f].lastPiece >= p ); if( f > 0 ) assert( inf->files[f-1].lastPiece < p ); for( f=0; ffileCount; ++f ) if( pieceHasFile( p, &inf->files[f] ) ) break; assert( (int)f == firstFiles[p] ); } #endif for( p=0; ppieceCount; ++p ) inf->pieces[p].priority = calculatePiecePriority( tor, p, firstFiles[p] ); tr_free( firstFiles ); } static void torrentStart( tr_torrent * tor ); /** * Decide on a block size. Constraints: * (1) most clients decline requests over 16 KiB * (2) pieceSize must be a multiple of block size */ uint32_t tr_getBlockSize( uint32_t pieceSize ) { uint32_t b = pieceSize; while( b > MAX_BLOCK_SIZE ) b /= 2u; if( !b || ( pieceSize % b ) ) /* not cleanly divisible */ return 0; return b; } static void refreshCurrentDir( tr_torrent * tor ); static void torrentInitFromInfo( tr_torrent * tor ) { uint64_t t; tr_info * info = &tor->info; tor->blockSize = tr_getBlockSize( info->pieceSize ); if( info->pieceSize ) tor->lastPieceSize = (uint32_t)(info->totalSize % info->pieceSize); if( !tor->lastPieceSize ) tor->lastPieceSize = info->pieceSize; if( tor->blockSize ) tor->lastBlockSize = info->totalSize % tor->blockSize; if( !tor->lastBlockSize ) tor->lastBlockSize = tor->blockSize; tor->blockCount = tor->blockSize ? ( info->totalSize + tor->blockSize - 1 ) / tor->blockSize : 0; tor->blockCountInPiece = tor->blockSize ? info->pieceSize / tor->blockSize : 0; tor->blockCountInLastPiece = tor->blockSize ? ( tor->lastPieceSize + tor->blockSize - 1 ) / tor->blockSize : 0; /* check our work */ if( tor->blockSize != 0 ) assert( ( info->pieceSize % tor->blockSize ) == 0 ); t = info->pieceCount - 1; t *= info->pieceSize; t += tor->lastPieceSize; assert( t == info->totalSize ); t = tor->blockCount - 1; t *= tor->blockSize; t += tor->lastBlockSize; assert( t == info->totalSize ); t = info->pieceCount - 1; t *= tor->blockCountInPiece; t += tor->blockCountInLastPiece; assert( t == (uint64_t)tor->blockCount ); tr_cpConstruct( &tor->completion, tor ); tr_torrentInitFilePieces( tor ); tor->completeness = tr_cpGetStatus( &tor->completion ); } static void tr_torrentFireMetadataCompleted( tr_torrent * tor ); void tr_torrentGotNewInfoDict( tr_torrent * tor ) { torrentInitFromInfo( tor ); tr_peerMgrOnTorrentGotMetainfo( tor ); tr_torrentFireMetadataCompleted( tor ); } static bool hasAnyLocalData( const tr_torrent * tor ) { tr_file_index_t i; for( i=0; iinfo.fileCount; ++i ) if( tr_torrentFindFile2( tor, i, NULL, NULL, NULL ) ) return true; return false; } static bool setLocalErrorIfFilesDisappeared( tr_torrent * tor ) { const bool disappeared = ( tr_cpHaveTotal( &tor->completion ) > 0 ) && !hasAnyLocalData( tor ); if( disappeared ) { tr_deeplog_tor( tor, "%s", "[LAZY] uh oh, the files disappeared" ); tr_torrentSetLocalError( tor, "%s", _( "No data found! Ensure your drives are connected or use \"Set Location\". To re-download, remove the torrent and re-add it." ) ); } return disappeared; } static void torrentInit( tr_torrent * tor, const tr_ctor * ctor ) { int doStart; uint64_t loaded; const char * dir; bool isNewTorrent; struct stat st; static int nextUniqueId = 1; tr_session * session = tr_ctorGetSession( ctor ); assert( session != NULL ); tr_sessionLock( session ); tor->session = session; tor->uniqueId = nextUniqueId++; tor->magicNumber = TORRENT_MAGIC_NUMBER; tr_peerIdInit( tor->peer_id ); tr_sha1( tor->obfuscatedHash, "req2", 4, tor->info.hash, SHA_DIGEST_LENGTH, NULL ); if( !tr_ctorGetDownloadDir( ctor, TR_FORCE, &dir ) || !tr_ctorGetDownloadDir( ctor, TR_FALLBACK, &dir ) ) tor->downloadDir = tr_strdup( dir ); if( tr_ctorGetIncompleteDir( ctor, &dir ) ) dir = tr_sessionGetIncompleteDir( session ); if( tr_sessionIsIncompleteDirEnabled( session ) ) tor->incompleteDir = tr_strdup( dir ); tr_bandwidthConstruct( &tor->bandwidth, session, &session->bandwidth ); tor->bandwidth.priority = tr_ctorGetBandwidthPriority( ctor ); tor->error = TR_STAT_OK; tor->finishedSeedingByIdle = false; tr_peerMgrAddTorrent( session->peerMgr, tor ); assert( !tor->downloadedCur ); assert( !tor->uploadedCur ); tr_torrentSetAddedDate( tor, tr_time( ) ); /* this is a default value to be overwritten by the resume file */ torrentInitFromInfo( tor ); loaded = tr_torrentLoadResume( tor, ~0, ctor ); tor->completeness = tr_cpGetStatus( &tor->completion ); setLocalErrorIfFilesDisappeared( tor ); tr_ctorInitTorrentPriorities( ctor, tor ); tr_ctorInitTorrentWanted( ctor, tor ); refreshCurrentDir( tor ); doStart = tor->isRunning; tor->isRunning = 0; if( !( loaded & TR_FR_SPEEDLIMIT ) ) { tr_torrentUseSpeedLimit( tor, TR_UP, false ); tr_torrentSetSpeedLimit_Bps( tor, TR_UP, tr_sessionGetSpeedLimit_Bps( tor->session, TR_UP ) ); tr_torrentUseSpeedLimit( tor, TR_DOWN, false ); tr_torrentSetSpeedLimit_Bps( tor, TR_DOWN, tr_sessionGetSpeedLimit_Bps( tor->session, TR_DOWN ) ); tr_torrentUseSessionLimits( tor, true ); } if( !( loaded & TR_FR_RATIOLIMIT ) ) { tr_torrentSetRatioMode( tor, TR_RATIOLIMIT_GLOBAL ); tr_torrentSetRatioLimit( tor, tr_sessionGetRatioLimit( tor->session ) ); } if( !( loaded & TR_FR_IDLELIMIT ) ) { tr_torrentSetIdleMode( tor, TR_IDLELIMIT_GLOBAL ); tr_torrentSetIdleLimit( tor, tr_sessionGetIdleLimit( tor->session ) ); } /* add the torrent to tr_session.torrentList */ ++session->torrentCount; if( session->torrentList == NULL ) session->torrentList = tor; else { tr_torrent * it = session->torrentList; while( it->next != NULL ) it = it->next; it->next = tor; } /* if we don't have a local .torrent file already, assume the torrent is new */ isNewTorrent = stat( tor->info.torrent, &st ); /* maybe save our own copy of the metainfo */ if( tr_ctorGetSave( ctor ) ) { const tr_benc * val; if( !tr_ctorGetMetainfo( ctor, &val ) ) { const char * path = tor->info.torrent; const int err = tr_bencToFile( val, TR_FMT_BENC, path ); if( err ) tr_torrentSetLocalError( tor, "Unable to save torrent file: %s", tr_strerror( err ) ); tr_sessionSetTorrentFile( tor->session, tor->info.hashString, path ); } } tor->tiers = tr_announcerAddTorrent( tor, onTrackerResponse, NULL ); if( isNewTorrent ) { tor->startAfterVerify = doStart; tr_torrentVerify( tor ); } else if( doStart ) { torrentStart( tor ); } tr_sessionUnlock( session ); } static tr_parse_result torrentParseImpl( const tr_ctor * ctor, tr_info * setmeInfo, bool * setmeHasInfo, int * dictLength ) { int doFree; bool didParse; bool hasInfo = false; tr_info tmp; const tr_benc * metainfo; tr_session * session = tr_ctorGetSession( ctor ); tr_parse_result result = TR_PARSE_OK; if( setmeInfo == NULL ) setmeInfo = &tmp; memset( setmeInfo, 0, sizeof( tr_info ) ); if( tr_ctorGetMetainfo( ctor, &metainfo ) ) return TR_PARSE_ERR; didParse = tr_metainfoParse( session, metainfo, setmeInfo, &hasInfo, dictLength ); doFree = didParse && ( setmeInfo == &tmp ); if( !didParse ) result = TR_PARSE_ERR; if( didParse && hasInfo && !tr_getBlockSize( setmeInfo->pieceSize ) ) result = TR_PARSE_ERR; if( didParse && session && tr_torrentExists( session, setmeInfo->hash ) ) result = TR_PARSE_DUPLICATE; if( doFree ) tr_metainfoFree( setmeInfo ); if( setmeHasInfo != NULL ) *setmeHasInfo = hasInfo; return result; } tr_parse_result tr_torrentParse( const tr_ctor * ctor, tr_info * setmeInfo ) { return torrentParseImpl( ctor, setmeInfo, NULL, NULL ); } tr_torrent * tr_torrentNew( const tr_ctor * ctor, int * setmeError ) { int len; bool hasInfo; tr_info tmpInfo; tr_parse_result r; tr_torrent * tor = NULL; assert( ctor != NULL ); assert( tr_isSession( tr_ctorGetSession( ctor ) ) ); r = torrentParseImpl( ctor, &tmpInfo, &hasInfo, &len ); if( r == TR_PARSE_OK ) { tor = tr_new0( tr_torrent, 1 ); tor->info = tmpInfo; if( hasInfo ) tor->infoDictLength = len; torrentInit( tor, ctor ); } else { if( r == TR_PARSE_DUPLICATE ) tr_metainfoFree( &tmpInfo ); if( setmeError ) *setmeError = r; } return tor; } /** *** **/ void tr_torrentSetDownloadDir( tr_torrent * tor, const char * path ) { assert( tr_isTorrent( tor ) ); if( !path || !tor->downloadDir || strcmp( path, tor->downloadDir ) ) { tr_free( tor->downloadDir ); tor->downloadDir = tr_strdup( path ); tr_torrentSetDirty( tor ); } refreshCurrentDir( tor ); } const char* tr_torrentGetDownloadDir( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tor->downloadDir; } const char * tr_torrentGetCurrentDir( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tor->currentDir; } void tr_torrentChangeMyPort( tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); if( tor->isRunning ) tr_announcerChangeMyPort( tor ); } static inline void tr_torrentManualUpdateImpl( void * vtor ) { tr_torrent * tor = vtor; assert( tr_isTorrent( tor ) ); if( tor->isRunning ) tr_announcerManualAnnounce( tor ); } void tr_torrentManualUpdate( tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); tr_runInEventThread( tor->session, tr_torrentManualUpdateImpl, tor ); } bool tr_torrentCanManualUpdate( const tr_torrent * tor ) { return ( tr_isTorrent( tor ) ) && ( tor->isRunning ) && ( tr_announcerCanManualAnnounce( tor ) ); } const tr_info * tr_torrentInfo( const tr_torrent * tor ) { return tr_isTorrent( tor ) ? &tor->info : NULL; } const tr_stat * tr_torrentStatCached( tr_torrent * tor ) { const time_t now = tr_time( ); return tr_isTorrent( tor ) && ( now == tor->lastStatTime ) ? &tor->stats : tr_torrentStat( tor ); } void tr_torrentSetVerifyState( tr_torrent * tor, tr_verify_state state ) { assert( tr_isTorrent( tor ) ); assert( state==TR_VERIFY_NONE || state==TR_VERIFY_WAIT || state==TR_VERIFY_NOW ); tor->verifyState = state; tor->anyDate = tr_time( ); } tr_torrent_activity tr_torrentGetActivity( tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); tr_torrentRecheckCompleteness( tor ); if( tor->verifyState == TR_VERIFY_NOW ) return TR_STATUS_CHECK; if( tor->verifyState == TR_VERIFY_WAIT ) return TR_STATUS_CHECK_WAIT; if( !tor->isRunning ) return TR_STATUS_STOPPED; if( tor->completeness == TR_LEECH ) return TR_STATUS_DOWNLOAD; return TR_STATUS_SEED; } static double getVerifyProgress( const tr_torrent * tor ) { tr_piece_index_t i, n; tr_piece_index_t checked = 0; assert( tr_isTorrent( tor ) ); for( i=0, n=tor->info.pieceCount; i!=n; ++i ) if( tor->info.pieces[i].timeChecked ) ++checked; return checked / (double)tor->info.pieceCount; } const tr_stat * tr_torrentStat( tr_torrent * tor ) { tr_stat * s; uint64_t now; uint64_t seedRatioBytesLeft; uint64_t seedRatioBytesGoal; bool seedRatioApplies; uint16_t seedIdleMinutes; if( !tor ) return NULL; assert( tr_isTorrent( tor ) ); tr_torrentLock( tor ); tor->lastStatTime = tr_time( ); s = &tor->stats; s->id = tor->uniqueId; s->activity = tr_torrentGetActivity( tor ); s->error = tor->error; tr_strlcpy( s->errorString, tor->errorString, sizeof( s->errorString ) ); s->manualAnnounceTime = tr_announcerNextManualAnnounce( tor ); tr_peerMgrTorrentStats( tor, &s->peersConnected, &s->webseedsSendingToUs, &s->peersSendingToUs, &s->peersGettingFromUs, s->peersFrom ); now = tr_time_msec( ); s->rawUploadSpeed_KBps = toSpeedKBps( tr_bandwidthGetRawSpeed_Bps ( &tor->bandwidth, now, TR_UP ) ); s->pieceUploadSpeed_KBps = toSpeedKBps( tr_bandwidthGetPieceSpeed_Bps( &tor->bandwidth, now, TR_UP ) ); s->rawDownloadSpeed_KBps = toSpeedKBps( tr_bandwidthGetRawSpeed_Bps ( &tor->bandwidth, now, TR_DOWN ) ); s->pieceDownloadSpeed_KBps = toSpeedKBps( tr_bandwidthGetPieceSpeed_Bps( &tor->bandwidth, now, TR_DOWN ) ); s->percentComplete = tr_cpPercentComplete ( &tor->completion ); s->metadataPercentComplete = tr_torrentGetMetadataPercent( tor ); s->percentDone = tr_cpPercentDone ( &tor->completion ); s->leftUntilDone = tr_cpLeftUntilDone( &tor->completion ); s->sizeWhenDone = tr_cpSizeWhenDone ( &tor->completion ); s->recheckProgress = s->activity == TR_STATUS_CHECK ? getVerifyProgress( tor ) : 0; s->activityDate = tor->activityDate; s->addedDate = tor->addedDate; s->doneDate = tor->doneDate; s->startDate = tor->startDate; s->secondsSeeding = tor->secondsSeeding; s->secondsDownloading = tor->secondsDownloading; if ((s->activity == TR_STATUS_DOWNLOAD || s->activity == TR_STATUS_SEED) && s->startDate != 0) s->idleSecs = difftime(tr_time(), MAX(s->startDate, s->activityDate)); else s->idleSecs = -1; s->corruptEver = tor->corruptCur + tor->corruptPrev; s->downloadedEver = tor->downloadedCur + tor->downloadedPrev; s->uploadedEver = tor->uploadedCur + tor->uploadedPrev; s->haveValid = tr_cpHaveValid( &tor->completion ); s->haveUnchecked = tr_cpHaveTotal( &tor->completion ) - s->haveValid; s->desiredAvailable = tr_peerMgrGetDesiredAvailable( tor ); s->ratio = tr_getRatio( s->uploadedEver, s->downloadedEver ? s->downloadedEver : s->haveValid ); seedRatioApplies = tr_torrentGetSeedRatioBytes( tor, &seedRatioBytesLeft, &seedRatioBytesGoal ); switch( s->activity ) { /* etaXLSpeed exists because if we use the piece speed directly, * brief fluctuations cause the ETA to jump all over the place. * so, etaXLSpeed is a smoothed-out version of the piece speed * to dampen the effect of fluctuations */ case TR_STATUS_DOWNLOAD: if( ( tor->etaDLSpeedCalculatedAt + 800 ) < now ) { tor->etaDLSpeed_KBps = ( ( tor->etaDLSpeedCalculatedAt + 4000 ) < now ) ? s->pieceDownloadSpeed_KBps /* if no recent previous speed, no need to smooth */ : ((tor->etaDLSpeed_KBps*4.0) + s->pieceDownloadSpeed_KBps)/5.0; /* smooth across 5 readings */ tor->etaDLSpeedCalculatedAt = now; } if( s->leftUntilDone > s->desiredAvailable ) s->eta = TR_ETA_NOT_AVAIL; else if( tor->etaDLSpeed_KBps < 1 ) s->eta = TR_ETA_UNKNOWN; else s->eta = s->leftUntilDone / toSpeedBytes(tor->etaDLSpeed_KBps); s->etaIdle = TR_ETA_NOT_AVAIL; break; case TR_STATUS_SEED: { if( !seedRatioApplies ) s->eta = TR_ETA_NOT_AVAIL; else { if( ( tor->etaULSpeedCalculatedAt + 800 ) < now ) { tor->etaULSpeed_KBps = ( ( tor->etaULSpeedCalculatedAt + 4000 ) < now ) ? s->pieceUploadSpeed_KBps /* if no recent previous speed, no need to smooth */ : ((tor->etaULSpeed_KBps*4.0) + s->pieceUploadSpeed_KBps)/5.0; /* smooth across 5 readings */ tor->etaULSpeedCalculatedAt = now; } if( tor->etaULSpeed_KBps < 1 ) s->eta = TR_ETA_UNKNOWN; else s->eta = seedRatioBytesLeft / toSpeedBytes(tor->etaULSpeed_KBps); } if( tor->etaULSpeed_KBps < 1 && tr_torrentGetSeedIdle( tor, &seedIdleMinutes ) ) s->etaIdle = seedIdleMinutes * 60 - s->idleSecs; else s->etaIdle = TR_ETA_NOT_AVAIL; break; } default: s->eta = TR_ETA_NOT_AVAIL; s->etaIdle = TR_ETA_NOT_AVAIL; break; } /* s->haveValid is here to make sure a torrent isn't marked 'finished' * when the user hits "uncheck all" prior to starting the torrent... */ s->finished = tor->finishedSeedingByIdle || (seedRatioApplies && !seedRatioBytesLeft && s->haveValid); if( !seedRatioApplies || s->finished ) s->seedRatioPercentDone = 1; else if( !seedRatioBytesGoal ) /* impossible? safeguard for div by zero */ s->seedRatioPercentDone = 0; else s->seedRatioPercentDone = (double)(seedRatioBytesGoal - seedRatioBytesLeft) / seedRatioBytesGoal; tr_torrentUnlock( tor ); return s; } /*** **** ***/ static uint64_t fileBytesCompleted( const tr_torrent * tor, tr_file_index_t index ) { uint64_t total = 0; const tr_file * f = &tor->info.files[index]; if( f->length ) { tr_block_index_t first; tr_block_index_t last; tr_torGetFileBlockRange( tor, index, &first, &last ); if( first == last ) { if( tr_cpBlockIsComplete( &tor->completion, first ) ) total = f->length; } else { /* the first block */ if( tr_cpBlockIsComplete( &tor->completion, first ) ) total += tor->blockSize - ( f->offset % tor->blockSize ); /* the middle blocks */ if( first + 1 < last ) { uint64_t u = tr_bitfieldCountRange( &tor->completion.blockBitfield, first+1, last ); u *= tor->blockSize; total += u; } /* the last block */ if( tr_cpBlockIsComplete( &tor->completion, last ) ) total += ( f->offset + f->length ) - ( (uint64_t)tor->blockSize * last ); } } return total; } tr_file_stat * tr_torrentFiles( const tr_torrent * tor, tr_file_index_t * fileCount ) { tr_file_index_t i; const tr_file_index_t n = tor->info.fileCount; tr_file_stat * files = tr_new0( tr_file_stat, n ); tr_file_stat * walk = files; const bool isSeed = tor->completeness == TR_SEED; assert( tr_isTorrent( tor ) ); for( i=0; iinfo.files[i].length : fileBytesCompleted( tor, i ); walk->bytesCompleted = b; walk->progress = tor->info.files[i].length > 0 ? ( (float)b / tor->info.files[i].length ) : 1.0f; } if( fileCount ) *fileCount = n; return files; } void tr_torrentFilesFree( tr_file_stat * files, tr_file_index_t fileCount UNUSED ) { tr_free( files ); } /*** **** ***/ double* tr_torrentWebSpeeds_KBps( const tr_torrent * tor ) { double * ret = NULL; if( tr_isTorrent( tor ) ) { tr_torrentLock( tor ); ret = tr_peerMgrWebSpeeds_KBps( tor ); tr_torrentUnlock( tor ); } return ret; } tr_peer_stat * tr_torrentPeers( const tr_torrent * tor, int * peerCount ) { tr_peer_stat * ret = NULL; if( tr_isTorrent( tor ) ) { tr_torrentLock( tor ); ret = tr_peerMgrPeerStats( tor, peerCount ); tr_torrentUnlock( tor ); } return ret; } void tr_torrentPeersFree( tr_peer_stat * peers, int peerCount UNUSED ) { tr_free( peers ); } tr_tracker_stat * tr_torrentTrackers( const tr_torrent * torrent, int * setmeTrackerCount ) { tr_tracker_stat * ret = NULL; if( tr_isTorrent( torrent ) ) { tr_torrentLock( torrent ); ret = tr_announcerStats( torrent, setmeTrackerCount ); tr_torrentUnlock( torrent ); } return ret; } void tr_torrentTrackersFree( tr_tracker_stat * trackers, int trackerCount ) { tr_announcerStatsFree( trackers, trackerCount ); } void tr_torrentAvailability( const tr_torrent * tor, int8_t * tab, int size ) { if( tr_isTorrent( tor ) && ( tab != NULL ) && ( size > 0 ) ) { tr_torrentLock( tor ); tr_peerMgrTorrentAvailability( tor, tab, size ); tr_torrentUnlock( tor ); } } void tr_torrentAmountFinished( const tr_torrent * tor, float * tab, int size ) { assert( tr_isTorrent( tor ) ); tr_torrentLock( tor ); tr_cpGetAmountDone( &tor->completion, tab, size ); tr_torrentUnlock( tor ); } static void tr_torrentResetTransferStats( tr_torrent * tor ) { tr_torrentLock( tor ); tor->downloadedPrev += tor->downloadedCur; tor->downloadedCur = 0; tor->uploadedPrev += tor->uploadedCur; tor->uploadedCur = 0; tor->corruptPrev += tor->corruptCur; tor->corruptCur = 0; tr_torrentSetDirty( tor ); tr_torrentUnlock( tor ); } void tr_torrentSetHasPiece( tr_torrent * tor, tr_piece_index_t pieceIndex, bool has ) { assert( tr_isTorrent( tor ) ); assert( pieceIndex < tor->info.pieceCount ); if( has ) tr_cpPieceAdd( &tor->completion, pieceIndex ); else tr_cpPieceRem( &tor->completion, pieceIndex ); } /*** **** ***/ static void freeTorrent( tr_torrent * tor ) { tr_torrent * t; tr_session * session = tor->session; tr_info * inf = &tor->info; assert( !tor->isRunning ); tr_sessionLock( session ); tr_peerMgrRemoveTorrent( tor ); tr_cpDestruct( &tor->completion ); tr_announcerRemoveTorrent( session->announcer, tor ); tr_free( tor->downloadDir ); tr_free( tor->incompleteDir ); if( tor == session->torrentList ) session->torrentList = tor->next; else for( t = session->torrentList; t != NULL; t = t->next ) { if( t->next == tor ) { t->next = tor->next; break; } } assert( session->torrentCount >= 1 ); session->torrentCount--; tr_bandwidthDestruct( &tor->bandwidth ); tr_metainfoFree( inf ); tr_free( tor ); tr_sessionUnlock( session ); } /** *** Start/Stop Callback **/ static void torrentStartImpl( void * vtor ) { time_t now; tr_torrent * tor = vtor; assert( tr_isTorrent( tor ) ); tr_sessionLock( tor->session ); tr_torrentRecheckCompleteness( tor ); now = tr_time( ); tor->isRunning = true; tor->completeness = tr_cpGetStatus( &tor->completion ); tor->startDate = tor->anyDate = now; tr_torrentClearError( tor ); tor->finishedSeedingByIdle = false; tr_torrentResetTransferStats( tor ); tr_announcerTorrentStarted( tor ); tor->dhtAnnounceAt = now + tr_cryptoWeakRandInt( 20 ); tor->dhtAnnounce6At = now + tr_cryptoWeakRandInt( 20 ); tor->lpdAnnounceAt = now; tr_peerMgrStartTorrent( tor ); tr_sessionUnlock( tor->session ); } uint64_t tr_torrentGetCurrentSizeOnDisk( const tr_torrent * tor ) { tr_file_index_t i; uint64_t byte_count = 0; const tr_file_index_t n = tor->info.fileCount; for( i=0; iisRunning ) return; /* don't allow the torrent to be started if the files disappeared */ if( setLocalErrorIfFilesDisappeared( tor ) ) return; /* verifying right now... wait until that's done so * we'll know what completeness to use/announce */ if( tor->verifyState != TR_VERIFY_NONE ) { tor->startAfterVerify = true; return; } /* otherwise, start it now... */ tr_sessionLock( tor->session ); /* allow finished torrents to be resumed */ if( tr_torrentIsSeedRatioDone( tor ) ) { tr_torinf( tor, _( "Restarted manually -- disabling its seed ratio" ) ); tr_torrentSetRatioMode( tor, TR_RATIOLIMIT_UNLIMITED ); } /* corresponds to the peer_id sent as a tracker request parameter. * one tracker admin says: "When the same torrent is opened and * closed and opened again without quitting Transmission ... * change the peerid. It would help sometimes if a stopped event * was missed to ensure that we didn't think someone was cheating. */ tr_peerIdInit( tor->peer_id ); tor->isRunning = 1; tr_torrentSetDirty( tor ); tr_runInEventThread( tor->session, torrentStartImpl, tor ); tr_sessionUnlock( tor->session ); } void tr_torrentStart( tr_torrent * tor ) { if( tr_isTorrent( tor ) ) torrentStart( tor ); } static void torrentRecheckDoneImpl( void * vtor ) { tr_torrent * tor = vtor; assert( tr_isTorrent( tor ) ); tr_torrentRecheckCompleteness( tor ); if( tor->startAfterVerify ) { tor->startAfterVerify = false; torrentStart( tor ); } } static void torrentRecheckDoneCB( tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); tr_runInEventThread( tor->session, torrentRecheckDoneImpl, tor ); } static void verifyTorrent( void * vtor ) { tr_torrent * tor = vtor; tr_sessionLock( tor->session ); /* if the torrent's already being verified, stop it */ tr_verifyRemove( tor ); /* if the torrent's running, stop it & set the restart-after-verify flag */ if( tor->startAfterVerify || tor->isRunning ) { /* don't clobber isStopping */ const bool startAfter = tor->isStopping ? false : true; tr_torrentStop( tor ); tor->startAfterVerify = startAfter; } if( setLocalErrorIfFilesDisappeared( tor ) ) tor->startAfterVerify = false; else tr_verifyAdd( tor, torrentRecheckDoneCB ); tr_sessionUnlock( tor->session ); } void tr_torrentVerify( tr_torrent * tor ) { if( tr_isTorrent( tor ) ) tr_runInEventThread( tor->session, verifyTorrent, tor ); } void tr_torrentSave( tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); if( tor->isDirty ) { tor->isDirty = false; tr_torrentSaveResume( tor ); } } static void stopTorrent( void * vtor ) { tr_torrent * tor = vtor; tr_torinf( tor, "Pausing" ); assert( tr_isTorrent( tor ) ); tr_torrentLock( tor ); tr_verifyRemove( tor ); tr_peerMgrStopTorrent( tor ); tr_announcerTorrentStopped( tor ); tr_cacheFlushTorrent( tor->session->cache, tor ); tr_fdTorrentClose( tor->session, tor->uniqueId ); if( !tor->isDeleting ) tr_torrentSave( tor ); tr_torrentUnlock( tor ); } void tr_torrentStop( tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); if( tr_isTorrent( tor ) ) { tr_sessionLock( tor->session ); tor->isRunning = 0; tor->isStopping = 0; tr_torrentSetDirty( tor ); tr_runInEventThread( tor->session, stopTorrent, tor ); tr_sessionUnlock( tor->session ); } } static void closeTorrent( void * vtor ) { tr_benc * d; tr_torrent * tor = vtor; assert( tr_isTorrent( tor ) ); d = tr_bencListAddDict( &tor->session->removedTorrents, 2 ); tr_bencDictAddInt( d, "id", tor->uniqueId ); tr_bencDictAddInt( d, "date", tr_time( ) ); tr_torinf( tor, "%s", _( "Removing torrent" ) ); stopTorrent( tor ); if( tor->isDeleting ) { tr_metainfoRemoveSaved( tor->session, &tor->info ); tr_torrentRemoveResume( tor ); } tor->isRunning = 0; freeTorrent( tor ); } void tr_torrentFree( tr_torrent * tor ) { if( tr_isTorrent( tor ) ) { tr_session * session = tor->session; assert( tr_isSession( session ) ); tr_sessionLock( session ); tr_torrentClearCompletenessCallback( tor ); tr_runInEventThread( session, closeTorrent, tor ); tr_sessionUnlock( session ); } } struct remove_data { tr_torrent * tor; bool deleteFlag; tr_fileFunc * deleteFunc; }; static void tr_torrentDeleteLocalData( tr_torrent *, tr_fileFunc ); static void removeTorrent( void * vdata ) { struct remove_data * data = vdata; if( data->deleteFlag ) tr_torrentDeleteLocalData( data->tor, data->deleteFunc ); tr_torrentClearCompletenessCallback( data->tor ); closeTorrent( data->tor ); tr_free( data ); } void tr_torrentRemove( tr_torrent * tor, bool deleteFlag, tr_fileFunc deleteFunc ) { struct remove_data * data; assert( tr_isTorrent( tor ) ); tor->isDeleting = 1; data = tr_new0( struct remove_data, 1 ); data->tor = tor; data->deleteFlag = deleteFlag; data->deleteFunc = deleteFunc; tr_runInEventThread( tor->session, removeTorrent, data ); } /** *** Completeness **/ static const char * getCompletionString( int type ) { switch( type ) { /* Translators: this is a minor point that's safe to skip over, but FYI: "Complete" and "Done" are specific, different terms in Transmission: "Complete" means we've downloaded every file in the torrent. "Done" means we're done downloading the files we wanted, but NOT all that exist */ case TR_PARTIAL_SEED: return _( "Done" ); case TR_SEED: return _( "Complete" ); default: return _( "Incomplete" ); } } static void fireCompletenessChange( tr_torrent * tor, tr_completeness status, bool wasRunning ) { assert( ( status == TR_LEECH ) || ( status == TR_SEED ) || ( status == TR_PARTIAL_SEED ) ); if( tor->completeness_func ) tor->completeness_func( tor, status, wasRunning, tor->completeness_func_user_data ); } void tr_torrentSetCompletenessCallback( tr_torrent * tor, tr_torrent_completeness_func func, void * user_data ) { assert( tr_isTorrent( tor ) ); tor->completeness_func = func; tor->completeness_func_user_data = user_data; } void tr_torrentClearCompletenessCallback( tr_torrent * torrent ) { tr_torrentSetCompletenessCallback( torrent, NULL, NULL ); } void tr_torrentSetRatioLimitHitCallback( tr_torrent * tor, tr_torrent_ratio_limit_hit_func func, void * user_data ) { assert( tr_isTorrent( tor ) ); tor->ratio_limit_hit_func = func; tor->ratio_limit_hit_func_user_data = user_data; } void tr_torrentClearRatioLimitHitCallback( tr_torrent * torrent ) { tr_torrentSetRatioLimitHitCallback( torrent, NULL, NULL ); } void tr_torrentSetIdleLimitHitCallback( tr_torrent * tor, tr_torrent_idle_limit_hit_func func, void * user_data ) { assert( tr_isTorrent( tor ) ); tor->idle_limit_hit_func = func; tor->idle_limit_hit_func_user_data = user_data; } void tr_torrentClearIdleLimitHitCallback( tr_torrent * torrent ) { tr_torrentSetIdleLimitHitCallback( torrent, NULL, NULL ); } static void onSigCHLD( int i UNUSED ) { waitpid( -1, NULL, WNOHANG ); } static void torrentCallScript( const tr_torrent * tor, const char * script ) { char timeStr[128]; const time_t now = tr_time( ); tr_strlcpy( timeStr, ctime( &now ), sizeof( timeStr ) ); *strchr( timeStr,'\n' ) = '\0'; if( script && *script ) { int i; char * cmd[] = { tr_strdup( script ), NULL }; char * env[] = { tr_strdup_printf( "TR_APP_VERSION=%s", SHORT_VERSION_STRING ), tr_strdup_printf( "TR_TIME_LOCALTIME=%s", timeStr ), tr_strdup_printf( "TR_TORRENT_DIR=%s", tor->currentDir ), tr_strdup_printf( "TR_TORRENT_ID=%d", tr_torrentId( tor ) ), tr_strdup_printf( "TR_TORRENT_HASH=%s", tor->info.hashString ), tr_strdup_printf( "TR_TORRENT_NAME=%s", tr_torrentName( tor ) ), NULL }; tr_torinf( tor, "Calling script \"%s\"", script ); #ifdef WIN32 _spawnvpe( _P_NOWAIT, script, (const char*)cmd, env ); #else signal( SIGCHLD, onSigCHLD ); if( !fork( ) ) { for (i=0; env[i]; ++i) putenv(env[i]); execvp( script, cmd ); _exit( 0 ); } #endif for( i=0; cmd[i]; ++i ) tr_free( cmd[i] ); for( i=0; env[i]; ++i ) tr_free( env[i] ); } } void tr_torrentRecheckCompleteness( tr_torrent * tor ) { tr_completeness completeness; assert( tr_isTorrent( tor ) ); tr_torrentLock( tor ); completeness = tr_cpGetStatus( &tor->completion ); if( completeness != tor->completeness ) { const int recentChange = tor->downloadedCur != 0; const bool wasLeeching = !tr_torrentIsSeed( tor ); const bool wasRunning = tor->isRunning; if( recentChange ) { tr_torinf( tor, _( "State changed from \"%1$s\" to \"%2$s\"" ), getCompletionString( tor->completeness ), getCompletionString( completeness ) ); } tor->completeness = completeness; tr_fdTorrentClose( tor->session, tor->uniqueId ); if( tr_torrentIsSeed( tor ) ) { if( recentChange ) { tr_announcerTorrentCompleted( tor ); tor->doneDate = tor->anyDate = tr_time( ); } if( wasLeeching && wasRunning ) { /* clear interested flag on all peers */ tr_peerMgrClearInterest( tor ); /* if completeness was TR_LEECH then the seed limit check will have been skipped in bandwidthPulse */ tr_torrentCheckSeedLimit( tor ); } if( tor->currentDir == tor->incompleteDir ) tr_torrentSetLocation( tor, tor->downloadDir, true, NULL, NULL ); if( tr_sessionIsTorrentDoneScriptEnabled( tor->session ) ) torrentCallScript( tor, tr_sessionGetTorrentDoneScript( tor->session ) ); } fireCompletenessChange( tor, completeness, wasRunning ); tr_torrentSetDirty( tor ); } tr_torrentUnlock( tor ); } /*** **** ***/ static void tr_torrentFireMetadataCompleted( tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); if( tor->metadata_func ) tor->metadata_func( tor, tor->metadata_func_user_data ); } void tr_torrentSetMetadataCallback( tr_torrent * tor, tr_torrent_metadata_func func, void * user_data ) { assert( tr_isTorrent( tor ) ); tor->metadata_func = func; tor->metadata_func_user_data = user_data; } /** *** File priorities **/ void tr_torrentInitFilePriority( tr_torrent * tor, tr_file_index_t fileIndex, tr_priority_t priority ) { tr_piece_index_t i; tr_file * file; assert( tr_isTorrent( tor ) ); assert( fileIndex < tor->info.fileCount ); assert( tr_isPriority( priority ) ); file = &tor->info.files[fileIndex]; file->priority = priority; for( i = file->firstPiece; i <= file->lastPiece; ++i ) tor->info.pieces[i].priority = calculatePiecePriority( tor, i, fileIndex ); } void tr_torrentSetFilePriorities( tr_torrent * tor, const tr_file_index_t * files, tr_file_index_t fileCount, tr_priority_t priority ) { tr_file_index_t i; assert( tr_isTorrent( tor ) ); tr_torrentLock( tor ); for( i = 0; i < fileCount; ++i ) if( files[i] < tor->info.fileCount ) tr_torrentInitFilePriority( tor, files[i], priority ); tr_torrentSetDirty( tor ); tr_peerMgrRebuildRequests( tor ); tr_torrentUnlock( tor ); } tr_priority_t* tr_torrentGetFilePriorities( const tr_torrent * tor ) { tr_file_index_t i; tr_priority_t * p; assert( tr_isTorrent( tor ) ); tr_torrentLock( tor ); p = tr_new0( tr_priority_t, tor->info.fileCount ); for( i = 0; i < tor->info.fileCount; ++i ) p[i] = tor->info.files[i].priority; tr_torrentUnlock( tor ); return p; } /** *** File DND **/ static void setFileDND( tr_torrent * tor, tr_file_index_t fileIndex, int doDownload ) { const int8_t dnd = !doDownload; tr_piece_index_t firstPiece; int8_t firstPieceDND; tr_piece_index_t lastPiece; int8_t lastPieceDND; tr_file_index_t i; tr_file * file = &tor->info.files[fileIndex]; file->dnd = dnd; firstPiece = file->firstPiece; lastPiece = file->lastPiece; /* can't set the first piece to DND unless every file using that piece is DND */ firstPieceDND = dnd; if( fileIndex > 0 ) { for( i = fileIndex - 1; firstPieceDND; --i ) { if( tor->info.files[i].lastPiece != firstPiece ) break; firstPieceDND = tor->info.files[i].dnd; if( !i ) break; } } /* can't set the last piece to DND unless every file using that piece is DND */ lastPieceDND = dnd; for( i = fileIndex + 1; lastPieceDND && i < tor->info.fileCount; ++i ) { if( tor->info.files[i].firstPiece != lastPiece ) break; lastPieceDND = tor->info.files[i].dnd; } if( firstPiece == lastPiece ) { tor->info.pieces[firstPiece].dnd = firstPieceDND && lastPieceDND; } else { tr_piece_index_t pp; tor->info.pieces[firstPiece].dnd = firstPieceDND; tor->info.pieces[lastPiece].dnd = lastPieceDND; for( pp = firstPiece + 1; pp < lastPiece; ++pp ) tor->info.pieces[pp].dnd = dnd; } } void tr_torrentInitFileDLs( tr_torrent * tor, const tr_file_index_t * files, tr_file_index_t fileCount, bool doDownload ) { tr_file_index_t i; assert( tr_isTorrent( tor ) ); tr_torrentLock( tor ); for( i=0; iinfo.fileCount ) setFileDND( tor, files[i], doDownload ); tr_cpInvalidateDND( &tor->completion ); tr_torrentUnlock( tor ); } void tr_torrentSetFileDLs( tr_torrent * tor, const tr_file_index_t * files, tr_file_index_t fileCount, bool doDownload ) { assert( tr_isTorrent( tor ) ); tr_torrentLock( tor ); tr_torrentInitFileDLs( tor, files, fileCount, doDownload ); tr_torrentSetDirty( tor ); tr_peerMgrRebuildRequests( tor ); tr_torrentUnlock( tor ); } /*** **** ***/ tr_priority_t tr_torrentGetPriority( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tor->bandwidth.priority; } void tr_torrentSetPriority( tr_torrent * tor, tr_priority_t priority ) { assert( tr_isTorrent( tor ) ); assert( tr_isPriority( priority ) ); if( tor->bandwidth.priority != priority ) { tor->bandwidth.priority = priority; tr_torrentSetDirty( tor ); } } /*** **** ***/ void tr_torrentSetPeerLimit( tr_torrent * tor, uint16_t maxConnectedPeers ) { assert( tr_isTorrent( tor ) ); if ( tor->maxConnectedPeers != maxConnectedPeers ) { tor->maxConnectedPeers = maxConnectedPeers; tr_torrentSetDirty( tor ); } } uint16_t tr_torrentGetPeerLimit( const tr_torrent * tor ) { assert( tr_isTorrent( tor ) ); return tor->maxConnectedPeers; } /*** **** ***/ void tr_torrentGetBlockLocation( const tr_torrent * tor, tr_block_index_t block, tr_piece_index_t * piece, uint32_t * offset, uint32_t * length ) { uint64_t pos = block; pos *= tor->blockSize; *piece = pos / tor->info.pieceSize; *offset = pos - ( *piece * tor->info.pieceSize ); *length = tr_torBlockCountBytes( tor, block ); } tr_block_index_t _tr_block( const tr_torrent * tor, tr_piece_index_t index, uint32_t offset ) { tr_block_index_t ret; assert( tr_isTorrent( tor ) ); ret = index; ret *= ( tor->info.pieceSize / tor->blockSize ); ret += offset / tor->blockSize; return ret; } bool tr_torrentReqIsValid( const tr_torrent * tor, tr_piece_index_t index, uint32_t offset, uint32_t length ) { int err = 0; assert( tr_isTorrent( tor ) ); if( index >= tor->info.pieceCount ) err = 1; else if( length < 1 ) err = 2; else if( ( offset + length ) > tr_torPieceCountBytes( tor, index ) ) err = 3; else if( length > MAX_BLOCK_SIZE ) err = 4; else if( tr_pieceOffset( tor, index, offset, length ) > tor->info.totalSize ) err = 5; if( err ) tr_tordbg( tor, "index %lu offset %lu length %lu err %d\n", (unsigned long)index, (unsigned long)offset, (unsigned long)length, err ); return !err; } uint64_t tr_pieceOffset( const tr_torrent * tor, tr_piece_index_t index, uint32_t offset, uint32_t length ) { uint64_t ret; assert( tr_isTorrent( tor ) ); ret = tor->info.pieceSize; ret *= index; ret += offset; ret += length; return ret; } void tr_torGetFileBlockRange( const tr_torrent * tor, const tr_file_index_t file, tr_block_index_t * first, tr_block_index_t * last ) { const tr_file * f = &tor->info.files[file]; uint64_t offset = f->offset; *first = offset / tor->blockSize; if( !f->length ) *last = *first; else { offset += f->length - 1; *last = offset / tor->blockSize; } } void tr_torGetPieceBlockRange( const tr_torrent * tor, const tr_piece_index_t piece, tr_block_index_t * first, tr_block_index_t * last ) { uint64_t offset = tor->info.pieceSize; offset *= piece; *first = offset / tor->blockSize; offset += ( tr_torPieceCountBytes( tor, piece ) - 1 ); *last = offset / tor->blockSize; } /*** **** ***/ void tr_torrentSetPieceChecked( tr_torrent * tor, tr_piece_index_t pieceIndex ) { assert( tr_isTorrent( tor ) ); assert( pieceIndex < tor->info.pieceCount ); tor->info.pieces[pieceIndex].timeChecked = tr_time( ); } void tr_torrentSetChecked( tr_torrent * tor, time_t when ) { tr_piece_index_t i, n; assert( tr_isTorrent( tor ) ); for( i=0, n=tor->info.pieceCount; i!=n; ++i ) tor->info.pieces[i].timeChecked = when; } bool tr_torrentCheckPiece( tr_torrent * tor, tr_piece_index_t pieceIndex ) { const bool pass = tr_ioTestPiece( tor, pieceIndex ); tr_deeplog_tor( tor, "[LAZY] tr_torrentCheckPiece tested piece %zu, pass==%d", (size_t)pieceIndex, (int)pass ); tr_torrentSetHasPiece( tor, pieceIndex, pass ); tr_torrentSetPieceChecked( tor, pieceIndex ); tor->anyDate = tr_time( ); tr_torrentSetDirty( tor ); return pass; } time_t tr_torrentGetFileMTime( const tr_torrent * tor, tr_file_index_t i ) { time_t mtime = 0; if( !tr_fdFileGetCachedMTime( tor->session, tor->uniqueId, i, &mtime ) ) tr_torrentFindFile2( tor, i, NULL, NULL, &mtime ); return mtime; } bool tr_torrentPieceNeedsCheck( const tr_torrent * tor, tr_piece_index_t p ) { uint64_t unused; tr_file_index_t f; const tr_info * inf = tr_torrentInfo( tor ); /* if we've never checked this piece, then it needs to be checked */ if( !inf->pieces[p].timeChecked ) return true; /* If we think we've completed one of the files in this piece, * but it's been modified since we last checked it, * then it needs to be rechecked */ tr_ioFindFileLocation( tor, p, 0, &f, &unused ); for( ; f < inf->fileCount && pieceHasFile( p, &inf->files[f] ); ++f ) if( tr_cpFileIsComplete( &tor->completion, f ) ) if( tr_torrentGetFileMTime( tor, f ) > inf->pieces[p].timeChecked ) return true; return false; } /*** **** ***/ static int compareTrackerByTier( const void * va, const void * vb ) { const tr_tracker_info * a = va; const tr_tracker_info * b = vb; /* sort by tier */ if( a->tier != b->tier ) return a->tier - b->tier; /* get the effects of a stable sort by comparing the two elements' addresses */ return a - b; } bool tr_torrentSetAnnounceList( tr_torrent * tor, const tr_tracker_info * trackers_in, int trackerCount ) { int i; tr_benc metainfo; bool ok = true; tr_tracker_info * trackers; tr_torrentLock( tor ); assert( tr_isTorrent( tor ) ); /* ensure the trackers' tiers are in ascending order */ trackers = tr_memdup( trackers_in, sizeof( tr_tracker_info ) * trackerCount ); qsort( trackers, trackerCount, sizeof( tr_tracker_info ), compareTrackerByTier ); /* look for bad URLs */ for( i=0; ok && iinfo.torrent ) ) { bool hasInfo; tr_info tmpInfo; /* remove the old fields */ tr_bencDictRemove( &metainfo, "announce" ); tr_bencDictRemove( &metainfo, "announce-list" ); /* add the new fields */ if( trackerCount > 0 ) { tr_bencDictAddStr( &metainfo, "announce", trackers[0].announce ); } if( trackerCount > 1 ) { int i; int prevTier = -1; tr_benc * tier = NULL; tr_benc * announceList = tr_bencDictAddList( &metainfo, "announce-list", 0 ); for( i=0; isession, &metainfo, &tmpInfo, &hasInfo, &tor->infoDictLength ) ) { /* it's good, so keep these new trackers and free the old ones */ tr_info swap; swap.trackers = tor->info.trackers; swap.trackerCount = tor->info.trackerCount; tor->info.trackers = tmpInfo.trackers; tor->info.trackerCount = tmpInfo.trackerCount; tmpInfo.trackers = swap.trackers; tmpInfo.trackerCount = swap.trackerCount; tr_metainfoFree( &tmpInfo ); tr_bencToFile( &metainfo, TR_FMT_BENC, tor->info.torrent ); } /* cleanup */ tr_bencFree( &metainfo ); /* if we had a tracker-related error on this torrent, * and that tracker's been removed, * then clear the error */ if( ( tor->error == TR_STAT_TRACKER_WARNING ) || ( tor->error == TR_STAT_TRACKER_ERROR ) ) { bool clear = true; for( i=0; clear && ierrorTracker ) ) clear = false; if( clear ) tr_torrentClearError( tor ); } /* tell the announcer to reload this torrent's tracker list */ tr_announcerResetTorrent( tor->session->announcer, tor ); } tr_torrentUnlock( tor ); tr_free( trackers ); return ok; } /** *** **/ void tr_torrentSetAddedDate( tr_torrent * tor, time_t t ) { assert( tr_isTorrent( tor ) ); tor->addedDate = t; tor->anyDate = MAX( tor->anyDate, tor->addedDate ); } void tr_torrentSetActivityDate( tr_torrent * tor, time_t t ) { assert( tr_isTorrent( tor ) ); tor->activityDate = t; tor->anyDate = MAX( tor->anyDate, tor->activityDate ); } void tr_torrentSetDoneDate( tr_torrent * tor, time_t t ) { assert( tr_isTorrent( tor ) ); tor->doneDate = t; tor->anyDate = MAX( tor->anyDate, tor->doneDate ); } /** *** **/ uint64_t tr_torrentGetBytesLeftToAllocate( const tr_torrent * tor ) { tr_file_index_t i; uint64_t bytesLeft = 0; assert( tr_isTorrent( tor ) ); for( i=0; iinfo.fileCount; ++i ) { if( !tor->info.files[i].dnd ) { struct stat sb; const uint64_t length = tor->info.files[i].length; char * path = tr_torrentFindFile( tor, i ); bytesLeft += length; if( ( path != NULL ) && !stat( path, &sb ) && S_ISREG( sb.st_mode ) && ( (uint64_t)sb.st_size <= length ) ) bytesLeft -= sb.st_size; tr_free( path ); } } return bytesLeft; } /**** ***** Removing the torrent's local data ****/ static int vstrcmp( const void * a, const void * b ) { return strcmp( a, b ); } static int compareLongestFirst( const void * a, const void * b ) { const size_t alen = strlen( a ); const size_t blen = strlen( b ); if( alen != blen ) return alen > blen ? -1 : 1; return vstrcmp( a, b ); } static void addDirtyFile( const char * root, const char * filename, tr_ptrArray * dirtyFolders ) { char * dir = tr_dirname( filename ); /* add the parent folders to dirtyFolders until we reach the root or a known-dirty */ while ( ( dir != NULL ) && ( strlen( root ) <= strlen( dir ) ) && ( tr_ptrArrayFindSorted( dirtyFolders, dir, vstrcmp ) == NULL ) ) { char * tmp; tr_ptrArrayInsertSorted( dirtyFolders, tr_strdup( dir ), vstrcmp ); tmp = tr_dirname( dir ); tr_free( dir ); dir = tmp; } tr_free( dir ); } static void walkLocalData( const tr_torrent * tor, const char * root, const char * dir, const char * base, tr_ptrArray * torrentFiles, tr_ptrArray * folders, tr_ptrArray * dirtyFolders ) { struct stat sb; char * buf = tr_buildPath( dir, base, NULL ); int i = stat( buf, &sb ); if( !i ) { DIR * odir = NULL; if( S_ISDIR( sb.st_mode ) && ( ( odir = opendir ( buf ) ) ) ) { struct dirent *d; tr_ptrArrayInsertSorted( folders, tr_strdup( buf ), vstrcmp ); for( d = readdir( odir ); d != NULL; d = readdir( odir ) ) if( d->d_name && strcmp( d->d_name, "." ) && strcmp( d->d_name, ".." ) ) walkLocalData( tor, root, buf, d->d_name, torrentFiles, folders, dirtyFolders ); closedir( odir ); } else if( S_ISREG( sb.st_mode ) && ( sb.st_size > 0 ) ) { const char * sub = buf + strlen( tor->currentDir ) + strlen( TR_PATH_DELIMITER_STR ); const bool isTorrentFile = tr_ptrArrayFindSorted( torrentFiles, sub, vstrcmp ) != NULL; if( !isTorrentFile ) addDirtyFile( root, buf, dirtyFolders ); } } tr_free( buf ); } static void deleteLocalFile( const char * filename, tr_fileFunc fileFunc ) { struct stat sb; if( !stat( filename, &sb ) ) /* if file exists... */ fileFunc( filename ); } static void deleteLocalData( tr_torrent * tor, tr_fileFunc fileFunc ) { int i, n; char ** s; tr_file_index_t f; tr_ptrArray torrentFiles = TR_PTR_ARRAY_INIT; tr_ptrArray folders = TR_PTR_ARRAY_INIT; tr_ptrArray dirtyFolders = TR_PTR_ARRAY_INIT; /* dirty == contains non-torrent files */ const char * firstFile = tor->info.files[0].name; const char * cpch = strchr( firstFile, TR_PATH_DELIMITER ); char * tmp = cpch ? tr_strndup( firstFile, cpch - firstFile ) : NULL; char * root = tr_buildPath( tor->currentDir, tmp, NULL ); for( f=0; finfo.fileCount; ++f ) { tr_ptrArrayInsertSorted( &torrentFiles, tr_strdup( tor->info.files[f].name ), vstrcmp ); tr_ptrArrayInsertSorted( &torrentFiles, tr_torrentBuildPartial( tor, f ), vstrcmp ); } /* build the set of folders and dirtyFolders */ walkLocalData( tor, root, root, NULL, &torrentFiles, &folders, &dirtyFolders ); /* try to remove entire folders first, so that the recycle bin will be tidy */ s = (char**) tr_ptrArrayPeek( &folders, &n ); for( i=0; icurrentDir, tr_ptrArrayNth( &torrentFiles, i ), NULL ); deleteLocalFile( path, fileFunc ); tr_free( path ); } /* Now clean out the directories left empty from the previous step. * Work from deepest to shallowest s.t. lower folders * won't prevent the upper folders from being deleted */ { tr_ptrArray cleanFolders = TR_PTR_ARRAY_INIT; s = (char**) tr_ptrArrayPeek( &folders, &n ); for( i=0; isession->cache, tor ); tr_fdTorrentClose( tor->session, tor->uniqueId ); if( tor->info.fileCount > 1 ) { deleteLocalData( tor, fileFunc ); } else if( tor->info.fileCount == 1 ) { char * tmp; /* torrent only has one file */ char * path = tr_buildPath( tor->currentDir, tor->info.files[0].name, NULL ); deleteLocalFile( path, fileFunc ); tr_free( path ); tmp = tr_torrentBuildPartial( tor, 0 ); path = tr_buildPath( tor->currentDir, tmp, NULL ); deleteLocalFile( path, fileFunc ); tr_free( path ); tr_free( tmp ); } } /*** **** ***/ struct LocationData { bool move_from_old_location; volatile int * setme_state; volatile double * setme_progress; char * location; tr_torrent * tor; }; static void setLocation( void * vdata ) { bool err = false; struct LocationData * data = vdata; tr_torrent * tor = data->tor; const bool do_move = data->move_from_old_location; const char * location = data->location; double bytesHandled = 0; assert( tr_isTorrent( tor ) ); tr_dbg( "Moving \"%s\" location from currentDir \"%s\" to \"%s\"", tr_torrentName(tor), tor->currentDir, location ); tr_mkdirp( location, 0777 ); if( !tr_is_same_file( location, tor->currentDir ) ) { tr_file_index_t i; /* bad idea to move files while they're being verified... */ tr_verifyRemove( tor ); /* try to move the files. * FIXME: there are still all kinds of nasty cases, like what * if the target directory runs out of space halfway through... */ for( i=0; !err && iinfo.fileCount; ++i ) { const tr_file * f = &tor->info.files[i]; const char * oldbase; char * sub; if( tr_torrentFindFile2( tor, i, &oldbase, &sub, NULL ) ) { char * oldpath = tr_buildPath( oldbase, sub, NULL ); char * newpath = tr_buildPath( location, sub, NULL ); tr_dbg( "Found file #%d: %s", (int)i, oldpath ); if( do_move && !tr_is_same_file( oldpath, newpath ) ) { bool renamed = false; errno = 0; tr_torinf( tor, "moving \"%s\" to \"%s\"", oldpath, newpath ); if( tr_moveFile( oldpath, newpath, &renamed ) ) { err = true; tr_torerr( tor, "error moving \"%s\" to \"%s\": %s", oldpath, newpath, tr_strerror( errno ) ); } } tr_free( newpath ); tr_free( oldpath ); tr_free( sub ); } if( data->setme_progress ) { bytesHandled += f->length; *data->setme_progress = bytesHandled / tor->info.totalSize; } } if( !err ) { /* blow away the leftover subdirectories in the old location */ if( do_move ) tr_torrentDeleteLocalData( tor, remove ); /* set the new location and reverify */ tr_torrentSetDownloadDir( tor, location ); } } if( !err && do_move ) { tr_free( tor->incompleteDir ); tor->incompleteDir = NULL; tor->currentDir = tor->downloadDir; } if( data->setme_state ) *data->setme_state = err ? TR_LOC_ERROR : TR_LOC_DONE; /* cleanup */ tr_free( data->location ); tr_free( data ); } void tr_torrentSetLocation( tr_torrent * tor, const char * location, bool move_from_old_location, volatile double * setme_progress, volatile int * setme_state ) { struct LocationData * data; assert( tr_isTorrent( tor ) ); if( setme_state ) *setme_state = TR_LOC_MOVING; if( setme_progress ) *setme_progress = 0; /* run this in the libtransmission thread */ data = tr_new( struct LocationData, 1 ); data->tor = tor; data->location = tr_strdup( location ); data->move_from_old_location = move_from_old_location; data->setme_state = setme_state; data->setme_progress = setme_progress; tr_runInEventThread( tor->session, setLocation, data ); } /*** **** ***/ void tr_torrentFileCompleted( tr_torrent * tor, tr_file_index_t fileNum ) { char * sub; const char * base; const tr_info * inf = &tor->info; const tr_file * f = &inf->files[fileNum]; tr_piece * p; const tr_piece * pend; const time_t now = tr_time( ); /* close the file so that we can reopen in read-only mode as needed */ tr_fdFileClose( tor->session, tor, fileNum ); /* now that the file is complete and closed, we can start watching its * mtime timestamp for changes to know if we need to reverify pieces */ for( p=&inf->pieces[f->firstPiece], pend=&inf->pieces[f->lastPiece]; p!=pend; ++p ) p->timeChecked = now; /* if the torrent's current filename isn't the same as the one in the * metadata -- for example, if it had the ".part" suffix appended to * it until now -- then rename it to match the one in the metadata */ if( tr_torrentFindFile2( tor, fileNum, &base, &sub, NULL ) ) { if( strcmp( sub, f->name ) ) { char * oldpath = tr_buildPath( base, sub, NULL ); char * newpath = tr_buildPath( base, f->name, NULL ); if( rename( oldpath, newpath ) ) tr_torerr( tor, "Error moving \"%s\" to \"%s\": %s", oldpath, newpath, tr_strerror( errno ) ); tr_free( newpath ); tr_free( oldpath ); } tr_free( sub ); } } /*** **** ***/ #ifdef SYS_DARWIN #define TR_STAT_MTIME(sb) ((sb).st_mtimespec.tv_sec) #else #define TR_STAT_MTIME(sb) ((sb).st_mtime) #endif static bool fileExists( const char * filename, time_t * mtime ) { struct stat sb; const bool ok = !stat( filename, &sb ); if( ok && ( mtime != NULL ) ) *mtime = TR_STAT_MTIME( sb ); return ok; } bool tr_torrentFindFile2( const tr_torrent * tor, tr_file_index_t fileNum, const char ** base, char ** subpath, time_t * mtime ) { char * part = NULL; const tr_file * file; const char * b = NULL; const char * s = NULL; assert( tr_isTorrent( tor ) ); assert( fileNum < tor->info.fileCount ); file = &tor->info.files[fileNum]; if( b == NULL ) { char * filename = tr_buildPath( tor->downloadDir, file->name, NULL ); if( fileExists( filename, mtime ) ) { b = tor->downloadDir; s = file->name; } tr_free( filename ); } if( ( b == NULL ) && ( tor->incompleteDir != NULL ) ) { char * filename = tr_buildPath( tor->incompleteDir, file->name, NULL ); if( fileExists( filename, mtime ) ) { b = tor->incompleteDir; s = file->name; } tr_free( filename ); } if( b == NULL ) part = tr_torrentBuildPartial( tor, fileNum ); if( ( b == NULL ) && ( tor->incompleteDir != NULL ) ) { char * filename = tr_buildPath( tor->incompleteDir, part, NULL ); if( fileExists( filename, mtime ) ) { b = tor->incompleteDir; s = part; } tr_free( filename ); } if( b == NULL) { char * filename = tr_buildPath( tor->downloadDir, part, NULL ); if( fileExists( filename, mtime ) ) { b = tor->downloadDir; s = part; } tr_free( filename ); } if( base != NULL ) *base = b; if( subpath != NULL ) *subpath = tr_strdup( s ); tr_free( part ); return b != NULL; } char* tr_torrentFindFile( const tr_torrent * tor, tr_file_index_t fileNum ) { char * subpath; char * ret = NULL; const char * base; if( tr_torrentFindFile2( tor, fileNum, &base, &subpath, NULL ) ) { ret = tr_buildPath( base, subpath, NULL ); tr_free( subpath ); } return ret; } /* Decide whether we should be looking for files in downloadDir or incompleteDir. */ static void refreshCurrentDir( tr_torrent * tor ) { const char * dir = NULL; if( tor->incompleteDir == NULL ) dir = tor->downloadDir; else if( !tr_torrentHasMetadata( tor ) ) /* no files to find */ dir = tor->incompleteDir; else if( !tr_torrentFindFile2( tor, 0, &dir, NULL, NULL ) ) dir = tor->incompleteDir; assert( dir != NULL ); assert( ( dir == tor->downloadDir ) || ( dir == tor->incompleteDir ) ); tor->currentDir = dir; } char* tr_torrentBuildPartial( const tr_torrent * tor, tr_file_index_t fileNum ) { return tr_strdup_printf( "%s.part", tor->info.files[fileNum].name ); }