Context Navigation

source: trunk/libtransmission/torrent.c @ 7893

Visit:

Last change on this file since 7893 was 7893, checked in by livings124, 14 years ago
a newly-added torrent should always follow the global ratio setting
Property svn:keywords set to `Date Rev Author Id`
File size: 53.2 KB

Line
1	/*
2	* This file Copyright (C) 2009 Charles Kerr <charles@transmissionbt.com>
3	*
4	* This file is licensed by the GPL version 2. Works owned by the
5	* Transmission project are granted a special exemption to clause 2(b)
6	* so that the bulk of its code can remain under the MIT license.
7	* This exemption does not extend to derived works not owned by
8	* the Transmission project.
9	*
10	* $Id: torrent.c 7893 2009-02-17 01:42:10Z livings124 $
11	*/
12
13	#include <sys/types.h> /* stat */
14	#include <sys/stat.h> /* stat */
15	#include <unistd.h> /* stat */
16	#include <dirent.h>
17
18	#include <assert.h>
19	#include <limits.h> /* INT_MAX */
20	#include <string.h> /* memcmp */
21	#include <stdlib.h> /* qsort */
22
23	#include <event.h> /* evbuffer */
24
25	#include "transmission.h"
26	#include "session.h"
27	#include "bandwidth.h"
28	#include "bencode.h"
29	#include "completion.h"
30	#include "crypto.h" /* for tr_sha1 */
31	#include "resume.h"
32	#include "fdlimit.h" /* tr_fdFileClose */
33	#include "metainfo.h"
34	#include "peer-mgr.h"
35	#include "platform.h" /* TR_PATH_DELIMITER_STR */
36	#include "ptrarray.h"
37	#include "ratecontrol.h"
38	#include "torrent.h"
39	#include "tracker.h"
40	#include "trevent.h"
41	#include "utils.h"
42	#include "verify.h"
43
44	#define MAX_BLOCK_SIZE ( 1024 * 16 )
45
46	/***
47	****
48	***/
49
50	int
51	tr_torrentId( const tr_torrent * tor )
52	{
53	return tor->uniqueId;
54	}
55
56	tr_torrent*
57	tr_torrentFindFromId( tr_session * session, int id )
58	{
59	tr_torrent * tor = NULL;
60
61	while( ( tor = tr_torrentNext( session, tor ) ) )
62	if( tor->uniqueId == id )
63	return tor;
64
65	return NULL;
66	}
67
68	tr_torrent*
69	tr_torrentFindFromHashString( tr_session * session, const char * str )
70	{
71	tr_torrent * tor = NULL;
72
73	while( ( tor = tr_torrentNext( session, tor ) ) )
74	if( !strcmp( str, tor->info.hashString ) )
75	return tor;
76
77	return NULL;
78	}
79
80	tr_torrent*
81	tr_torrentFindFromHash( tr_session * session, const uint8_t * torrentHash )
82	{
83	tr_torrent * tor = NULL;
84
85	while( ( tor = tr_torrentNext( session, tor ) ) )
86	if( tor->info.hash == torrentHash )
87	if( !memcmp( tor->info.hash, torrentHash, SHA_DIGEST_LENGTH ) )
88	return tor;
89
90	return NULL;
91	}
92
93	tr_torrent*
94	tr_torrentFindFromObfuscatedHash( tr_session * session,
95	const uint8_t * obfuscatedTorrentHash )
96	{
97	tr_torrent * tor = NULL;
98
99	while( ( tor = tr_torrentNext( session, tor ) ) )
100	if( !memcmp( tor->obfuscatedHash, obfuscatedTorrentHash,
101	SHA_DIGEST_LENGTH ) )
102	return tor;
103
104	return NULL;
105	}
106
107	/***
108	**** PER-TORRENT UL / DL SPEEDS
109	***/
110
111	void
112	tr_torrentSetSpeedMode( tr_torrent * tor,
113	tr_direction dir,
114	tr_speedlimit mode )
115	{
116	assert( tor != NULL );
117	assert( tr_isDirection( dir ) );
118	assert( mode==TR_SPEEDLIMIT_GLOBAL \|\| mode==TR_SPEEDLIMIT_SINGLE \|\| mode==TR_SPEEDLIMIT_UNLIMITED );
119
120	tor->speedLimitMode[dir] = mode;
121
122	tr_bandwidthSetLimited( tor->bandwidth, dir, mode==TR_SPEEDLIMIT_SINGLE );
123	tr_bandwidthHonorParentLimits( tor->bandwidth, dir, mode==TR_SPEEDLIMIT_GLOBAL );
124	}
125
126	tr_speedlimit
127	tr_torrentGetSpeedMode( const tr_torrent * tor,
128	tr_direction dir )
129	{
130	assert( tor != NULL );
131	assert( tr_isDirection( dir ) );
132
133	return tor->speedLimitMode[dir];
134	}
135
136	void
137	tr_torrentSetSpeedLimit( tr_torrent * tor,
138	tr_direction dir,
139	int desiredSpeed )
140	{
141	tr_bandwidthSetDesiredSpeed( tor->bandwidth, dir, desiredSpeed );
142	}
143
144	int
145	tr_torrentGetSpeedLimit( const tr_torrent * tor,
146	tr_direction dir )
147	{
148	assert( tr_isTorrent( tor ) );
149
150	return tr_bandwidthGetDesiredSpeed( tor->bandwidth, dir );
151	}
152
153	void
154	tr_torrentSetRatioMode( tr_torrent * tor,
155	tr_ratiolimit mode )
156	{
157	assert( tr_isTorrent( tor ) );
158	assert( mode==TR_RATIOLIMIT_GLOBAL \|\| mode==TR_RATIOLIMIT_SINGLE \|\| mode==TR_RATIOLIMIT_UNLIMITED );
159
160	tor->ratioLimitMode = mode;
161	}
162
163	tr_ratiolimit
164	tr_torrentGetRatioMode( const tr_torrent * tor )
165	{
166	assert( tr_isTorrent( tor ) );
167
168	return tor->ratioLimitMode;
169	}
170
171	void
172	tr_torrentSetRatioLimit( tr_torrent * tor,
173	double desiredRatio )
174	{
175	assert( tr_isTorrent( tor ) );
176
177	tor->desiredRatio = desiredRatio;
178	}
179
180	double
181	tr_torrentGetRatioLimit( const tr_torrent * tor )
182	{
183	assert( tr_isTorrent( tor ) );
184
185	return tor->desiredRatio;
186	}
187
188	tr_bool
189	tr_torrentIsPieceTransferAllowed( const tr_torrent * tor,
190	tr_direction direction )
191	{
192	tr_bool isEnabled = FALSE;
193
194	switch( tr_torrentGetSpeedMode( tor, direction ) )
195	{
196	case TR_SPEEDLIMIT_GLOBAL:
197	isEnabled = !tr_sessionIsSpeedLimitEnabled( tor->session, direction )
198	\|\| tr_sessionGetSpeedLimit( tor->session, direction ) > 0;
199	break;
200
201	case TR_SPEEDLIMIT_SINGLE:
202	isEnabled = tr_torrentGetSpeedLimit( tor, direction ) > 0;
203	break;
204
205	case TR_SPEEDLIMIT_UNLIMITED:
206	isEnabled = TRUE;
207	break;
208
209	default:
210	assert( 0 && "unhandled speed mode" );
211	break;
212	}
213
214	return isEnabled;
215	}
216
217	tr_bool
218	tr_torrentGetSeedRatio( const tr_torrent * tor, double * ratio )
219	{
220	tr_bool isLimited;
221
222	switch( tr_torrentGetRatioMode( tor ) )
223	{
224	case TR_RATIOLIMIT_SINGLE:
225	isLimited = TRUE;
226	if( ratio )
227	*ratio = tr_torrentGetRatioLimit( tor );
228	break;
229
230	case TR_RATIOLIMIT_GLOBAL:
231	if(( isLimited = tr_sessionIsRatioLimited( tor->session )))
232	if( ratio )
233	*ratio = tr_sessionGetRatioLimit( tor->session );
234	break;
235
236	case TR_RATIOLIMIT_UNLIMITED:
237	isLimited = FALSE;
238	break;
239	}
240
241	return isLimited;
242	}
243
244	/***
245	****
246	***/
247
248	static void
249	onTrackerResponse( void * tracker UNUSED,
250	void * vevent,
251	void * user_data )
252	{
253	tr_torrent * tor = user_data;
254	tr_tracker_event * event = vevent;
255
256	switch( event->messageType )
257	{
258	case TR_TRACKER_PEERS:
259	{
260	size_t i, n;
261	tr_pex * pex = tr_peerMgrArrayToPex( event->compact,
262	event->compactLen, &n );
263	if( event->allAreSeeds )
264	tr_tordbg( tor, "Got %d seeds from tracker", (int)n );
265	else
266	tr_torinf( tor, _( "Got %d peers from tracker" ), (int)n );
267
268	for( i = 0; i < n; ++i )
269	{
270	if( event->allAreSeeds )
271	pex[i].flags \|= ADDED_F_SEED_FLAG;
272	tr_peerMgrAddPex( tor, TR_PEER_FROM_TRACKER, pex + i );
273	}
274
275	tr_free( pex );
276	break;
277	}
278
279	case TR_TRACKER_WARNING:
280	tr_torerr( tor, _( "Tracker warning: \"%s\"" ), event->text );
281	tor->error = -1;
282	tr_strlcpy( tor->errorString, event->text,
283	sizeof( tor->errorString ) );
284	break;
285
286	case TR_TRACKER_ERROR:
287	tr_torerr( tor, _( "Tracker error: \"%s\"" ), event->text );
288	tor->error = -2;
289	tr_strlcpy( tor->errorString, event->text,
290	sizeof( tor->errorString ) );
291	break;
292
293	case TR_TRACKER_ERROR_CLEAR:
294	tor->error = 0;
295	tor->errorString[0] = '\0';
296	break;
297	}
298	}
299
300	/***
301	****
302	**** TORRENT INSTANTIATION
303	****
304	***/
305
306	static int
307	getBytePiece( const tr_info * info,
308	uint64_t byteOffset )
309	{
310	assert( info );
311	assert( info->pieceSize != 0 );
312
313	return byteOffset / info->pieceSize;
314	}
315
316	static void
317	initFilePieces( tr_info * info,
318	tr_file_index_t fileIndex )
319	{
320	tr_file * file;
321	uint64_t firstByte, lastByte;
322
323	assert( info );
324	assert( fileIndex < info->fileCount );
325
326	file = &info->files[fileIndex];
327	firstByte = file->offset;
328	lastByte = firstByte + ( file->length ? file->length - 1 : 0 );
329	file->firstPiece = getBytePiece( info, firstByte );
330	file->lastPiece = getBytePiece( info, lastByte );
331	}
332
333	static int
334	pieceHasFile( tr_piece_index_t piece,
335	const tr_file * file )
336	{
337	return ( file->firstPiece <= piece ) && ( piece <= file->lastPiece );
338	}
339
340	static tr_priority_t
341	calculatePiecePriority( const tr_torrent * tor,
342	tr_piece_index_t piece,
343	int fileHint )
344	{
345	tr_file_index_t i;
346	int priority = TR_PRI_LOW;
347
348	/* find the first file that has data in this piece */
349	if( fileHint >= 0 )
350	{
351	i = fileHint;
352	while( i > 0 && pieceHasFile( piece, &tor->info.files[i - 1] ) )
353	--i;
354	}
355	else
356	{
357	for( i = 0; i < tor->info.fileCount; ++i )
358	if( pieceHasFile( piece, &tor->info.files[i] ) )
359	break;
360	}
361
362	/* the piece's priority is the max of the priorities
363	* of all the files in that piece */
364	for( ; i < tor->info.fileCount; ++i )
365	{
366	const tr_file * file = &tor->info.files[i];
367
368	if( !pieceHasFile( piece, file ) )
369	break;
370
371	priority = MAX( priority, file->priority );
372
373	/* when dealing with multimedia files, getting the first and
374	last pieces can sometimes allow you to preview it a bit
375	before it's fully downloaded... */
376	if( file->priority >= TR_PRI_NORMAL )
377	if( file->firstPiece == piece \|\| file->lastPiece == piece )
378	priority = TR_PRI_HIGH;
379	}
380
381	return priority;
382	}
383
384	static void
385	tr_torrentInitFilePieces( tr_torrent * tor )
386	{
387	tr_file_index_t ff;
388	tr_piece_index_t pp;
389	uint64_t offset = 0;
390	tr_info * inf = &tor->info;
391
392	assert( inf );
393
394	for( ff = 0; ff < inf->fileCount; ++ff )
395	{
396	inf->files[ff].offset = offset;
397	offset += inf->files[ff].length;
398	initFilePieces( inf, ff );
399	}
400
401	for( pp = 0; pp < inf->pieceCount; ++pp )
402	inf->pieces[pp].priority = calculatePiecePriority( tor, pp, -1 );
403	}
404
405	int
406	tr_torrentPromoteTracker( tr_torrent * tor,
407	int pos )
408	{
409	int i;
410	int tier;
411
412	assert( tor );
413	assert( ( 0 <= pos ) && ( pos < tor->info.trackerCount ) );
414
415	/* the tier of the tracker we're promoting */
416	tier = tor->info.trackers[pos].tier;
417
418	/* find the index of that tier's first tracker */
419	for( i = 0; i < tor->info.trackerCount; ++i )
420	if( tor->info.trackers[i].tier == tier )
421	break;
422
423	assert( i < tor->info.trackerCount );
424
425	/* promote the tracker at `pos' to the front of the tier */
426	if( i != pos )
427	{
428	const tr_tracker_info tmp = tor->info.trackers[i];
429	tor->info.trackers[i] = tor->info.trackers[pos];
430	tor->info.trackers[pos] = tmp;
431	}
432
433	/* return the new position of the tracker that started out at [pos] */
434	return i;
435	}
436
437	struct RandomTracker
438	{
439	tr_tracker_info tracker;
440	int random_value;
441	};
442
443	/* the tiers will be sorted from lowest to highest,
444	* and trackers are randomized within the tiers */
445	static TR_INLINE int
446	compareRandomTracker( const void * va,
447	const void * vb )
448	{
449	const struct RandomTracker * a = va;
450	const struct RandomTracker * b = vb;
451
452	if( a->tracker.tier != b->tracker.tier )
453	return a->tracker.tier - b->tracker.tier;
454
455	return a->random_value - b->random_value;
456	}
457
458	static void
459	randomizeTiers( tr_info * info )
460	{
461	int i;
462	const int n = info->trackerCount;
463	struct RandomTracker * r = tr_new0( struct RandomTracker, n );
464
465	for( i = 0; i < n; ++i )
466	{
467	r[i].tracker = info->trackers[i];
468	r[i].random_value = tr_cryptoRandInt( INT_MAX );
469	}
470	qsort( r, n, sizeof( struct RandomTracker ), compareRandomTracker );
471	for( i = 0; i < n; ++i )
472	info->trackers[i] = r[i].tracker;
473	tr_free( r );
474	}
475
476	static void torrentStart( tr_torrent * tor,
477	int reloadProgress );
478
479	/**
480	* Decide on a block size. constraints:
481	* (1) most clients decline requests over 16 KiB
482	* (2) pieceSize must be a multiple of block size
483	*/
484	static uint32_t
485	getBlockSize( uint32_t pieceSize )
486	{
487	uint32_t b = pieceSize;
488
489	while( b > MAX_BLOCK_SIZE )
490	b /= 2u;
491
492	if( !b \|\| ( pieceSize % b ) ) /* not cleanly divisible */
493	return 0;
494	return b;
495	}
496
497	static void
498	torrentRealInit( tr_session * session,
499	tr_torrent * tor,
500	const tr_ctor * ctor )
501	{
502	int doStart;
503	uint64_t loaded;
504	uint64_t t;
505	const char * dir;
506	static int nextUniqueId = 1;
507	tr_info * info = &tor->info;
508
509	tr_globalLock( session );
510
511	tor->session = session;
512	tor->uniqueId = nextUniqueId++;
513	tor->magicNumber = TORRENT_MAGIC_NUMBER;
514
515	randomizeTiers( info );
516
517	tor->bandwidth = tr_bandwidthNew( session, session->bandwidth );
518
519	tor->blockSize = getBlockSize( info->pieceSize );
520
521	if( !tr_ctorGetDownloadDir( ctor, TR_FORCE, &dir ) \|\|
522	!tr_ctorGetDownloadDir( ctor, TR_FALLBACK, &dir ) )
523	tor->downloadDir = tr_strdup( dir );
524
525	tor->lastPieceSize = info->totalSize % info->pieceSize;
526
527	if( !tor->lastPieceSize )
528	tor->lastPieceSize = info->pieceSize;
529
530	tor->lastBlockSize = info->totalSize % tor->blockSize;
531
532	if( !tor->lastBlockSize )
533	tor->lastBlockSize = tor->blockSize;
534
535	tor->blockCount =
536	( info->totalSize + tor->blockSize - 1 ) / tor->blockSize;
537
538	tor->blockCountInPiece =
539	info->pieceSize / tor->blockSize;
540
541	tor->blockCountInLastPiece =
542	( tor->lastPieceSize + tor->blockSize - 1 ) / tor->blockSize;
543
544	/* check our work */
545	assert( ( info->pieceSize % tor->blockSize ) == 0 );
546	t = info->pieceCount - 1;
547	t *= info->pieceSize;
548	t += tor->lastPieceSize;
549	assert( t == info->totalSize );
550	t = tor->blockCount - 1;
551	t *= tor->blockSize;
552	t += tor->lastBlockSize;
553	assert( t == info->totalSize );
554	t = info->pieceCount - 1;
555	t *= tor->blockCountInPiece;
556	t += tor->blockCountInLastPiece;
557	assert( t == (uint64_t)tor->blockCount );
558
559	tr_cpConstruct( &tor->completion, tor );
560
561	tr_torrentInitFilePieces( tor );
562
563	tr_rcConstruct( &tor->swarmSpeed );
564
565	tr_sha1( tor->obfuscatedHash, "req2", 4,
566	info->hash, SHA_DIGEST_LENGTH,
567	NULL );
568
569	tr_peerMgrAddTorrent( session->peerMgr, tor );
570
571	assert( session->isPortSet );
572	assert( !tor->downloadedCur );
573	assert( !tor->uploadedCur );
574
575	tor->error = 0;
576
577	tr_bitfieldConstruct( &tor->checkedPieces, tor->info.pieceCount );
578	tr_torrentUncheck( tor );
579
580	tor->addedDate = time( NULL ); /* this is a default value to be
581	overwritten by the resume file */
582	loaded = tr_torrentLoadResume( tor, ~0, ctor );
583
584	doStart = tor->isRunning;
585	tor->isRunning = 0;
586
587	if( !( loaded & TR_FR_SPEEDLIMIT ) )
588	{
589	tr_torrentSetSpeedLimit( tor, TR_UP,
590	tr_sessionGetSpeedLimit( tor->session, TR_UP ) );
591	tr_torrentSetSpeedLimit( tor, TR_DOWN,
592	tr_sessionGetSpeedLimit( tor->session, TR_DOWN ) );
593	}
594
595	if( !( loaded & TR_FR_RATIOLIMIT ) )
596	{
597	tr_torrentSetRatioMode( tor, TR_RATIOLIMIT_GLOBAL );
598	tr_torrentSetRatioLimit( tor, tr_sessionGetRatioLimit( tor->session ) );
599	}
600
601	tor->completeness = tr_cpGetStatus( &tor->completion );
602
603	tor->tracker = tr_trackerNew( tor );
604	tor->trackerSubscription =
605	tr_trackerSubscribe( tor->tracker, onTrackerResponse,
606	tor );
607
608	{
609	tr_torrent * it = NULL;
610	tr_torrent * last = NULL;
611	while( ( it = tr_torrentNext( session, it ) ) )
612	last = it;
613
614	if( !last )
615	session->torrentList = tor;
616	else
617	last->next = tor;
618	++session->torrentCount;
619	}
620
621	tr_globalUnlock( session );
622
623	/* maybe save our own copy of the metainfo */
624	if( tr_ctorGetSave( ctor ) )
625	{
626	const tr_benc * val;
627	if( !tr_ctorGetMetainfo( ctor, &val ) )
628	{
629	const char * filename = tor->info.torrent;
630	tr_bencSaveFile( filename, val );
631	tr_sessionSetTorrentFile( tor->session, tor->info.hashString,
632	filename );
633	}
634	}
635
636	tr_metainfoMigrate( session, &tor->info );
637
638	if( doStart )
639	torrentStart( tor, FALSE );
640	}
641
642	int
643	tr_torrentParse( const tr_session * session,
644	const tr_ctor * ctor,
645	tr_info * setmeInfo )
646	{
647	int err = 0;
648	int doFree;
649	tr_info tmp;
650	const tr_benc * metainfo;
651
652	if( setmeInfo == NULL )
653	setmeInfo = &tmp;
654	memset( setmeInfo, 0, sizeof( tr_info ) );
655
656	if( !err && tr_ctorGetMetainfo( ctor, &metainfo ) )
657	return TR_EINVALID;
658
659	err = tr_metainfoParse( session, setmeInfo, metainfo );
660	doFree = !err && ( setmeInfo == &tmp );
661
662	if( !err && !getBlockSize( setmeInfo->pieceSize ) )
663	err = TR_EINVALID;
664
665	if( !err && tr_torrentExists( session, setmeInfo->hash ) )
666	err = TR_EDUPLICATE;
667
668	if( doFree )
669	tr_metainfoFree( setmeInfo );
670
671	return err;
672	}
673
674	tr_torrent *
675	tr_torrentNew( tr_session * session,
676	const tr_ctor * ctor,
677	int * setmeError )
678	{
679	int err;
680	tr_info tmpInfo;
681	tr_torrent * tor = NULL;
682
683	err = tr_torrentParse( session, ctor, &tmpInfo );
684	if( !err )
685	{
686	tor = tr_new0( tr_torrent, 1 );
687	tor->info = tmpInfo;
688	torrentRealInit( session, tor, ctor );
689	}
690	else if( setmeError )
691	{
692	*setmeError = err;
693	}
694
695	return tor;
696	}
697
698	/**
699	***
700	**/
701
702	void
703	tr_torrentSetDownloadDir( tr_torrent * tor,
704	const char * path )
705	{
706	assert( tr_isTorrent( tor ) );
707
708	if( !path \|\| !tor->downloadDir \|\| strcmp( path, tor->downloadDir ) )
709	{
710	tr_free( tor->downloadDir );
711	tor->downloadDir = tr_strdup( path );
712	tr_torrentSaveResume( tor );
713	}
714	}
715
716	const char*
717	tr_torrentGetDownloadDir( const tr_torrent * tor )
718	{
719	assert( tr_isTorrent( tor ) );
720
721	return tor->downloadDir;
722	}
723
724	void
725	tr_torrentChangeMyPort( tr_torrent * tor )
726	{
727	assert( tr_isTorrent( tor ) );
728
729	if( tor->tracker )
730	tr_trackerChangeMyPort( tor->tracker );
731	}
732
733	static TR_INLINE void
734	tr_torrentManualUpdateImpl( void * vtor )
735	{
736	tr_torrent * tor = vtor;
737
738	assert( tr_isTorrent( tor ) );
739
740	if( tor->isRunning )
741	tr_trackerReannounce( tor->tracker );
742	}
743
744	void
745	tr_torrentManualUpdate( tr_torrent * tor )
746	{
747	assert( tr_isTorrent( tor ) );
748
749	tr_runInEventThread( tor->session, tr_torrentManualUpdateImpl, tor );
750	}
751
752	int
753	tr_torrentCanManualUpdate( const tr_torrent * tor )
754	{
755	return ( tr_isTorrent( tor ) )
756	&& ( tor->isRunning )
757	&& ( tr_trackerCanManualAnnounce( tor->tracker ) );
758	}
759
760	const tr_info *
761	tr_torrentInfo( const tr_torrent * tor )
762	{
763	return tr_isTorrent( tor ) ? &tor->info : NULL;
764	}
765
766	const tr_stat *
767	tr_torrentStatCached( tr_torrent * tor )
768	{
769	const time_t now = time( NULL );
770
771	return tr_isTorrent( tor ) && ( now == tor->lastStatTime )
772	? &tor->stats
773	: tr_torrentStat( tor );
774	}
775
776	tr_torrent_activity
777	tr_torrentGetActivity( tr_torrent * tor )
778	{
779	assert( tr_isTorrent( tor ) );
780
781	tr_torrentRecheckCompleteness( tor );
782
783	if( tor->verifyState == TR_VERIFY_NOW )
784	return TR_STATUS_CHECK;
785	if( tor->verifyState == TR_VERIFY_WAIT )
786	return TR_STATUS_CHECK_WAIT;
787	if( !tor->isRunning )
788	return TR_STATUS_STOPPED;
789	if( tor->completeness == TR_LEECH )
790	return TR_STATUS_DOWNLOAD;
791
792	return TR_STATUS_SEED;
793	}
794
795	const tr_stat *
796	tr_torrentStat( tr_torrent * tor )
797	{
798	tr_stat * s;
799	struct tr_tracker * tc;
800	const tr_tracker_info * ti;
801	int usableSeeds = 0;
802	uint64_t now;
803	double downloadedForRatio, seedRatio;
804
805	if( !tor )
806	return NULL;
807
808	assert( tr_isTorrent( tor ) );
809	tr_torrentLock( tor );
810
811	tor->lastStatTime = time( NULL );
812
813	s = &tor->stats;
814	s->id = tor->uniqueId;
815	s->activity = tr_torrentGetActivity( tor );
816	s->error = tor->error;
817	memcpy( s->errorString, tor->errorString,
818	sizeof( s->errorString ) );
819
820	tc = tor->tracker;
821	ti = tr_trackerGetAddress( tor->tracker, tor );
822	s->announceURL = ti ? ti->announce : NULL;
823	s->scrapeURL = ti ? ti->scrape : NULL;
824	tr_trackerStat( tc, s );
825
826	tr_trackerGetCounts( tc, &s->timesCompleted,
827	&s->leechers,
828	&s->seeders,
829	&s->downloaders );
830
831	tr_peerMgrTorrentStats( tor,
832	&s->peersKnown,
833	&s->peersConnected,
834	&usableSeeds,
835	&s->webseedsSendingToUs,
836	&s->peersSendingToUs,
837	&s->peersGettingFromUs,
838	s->peersFrom );
839
840	now = tr_date( );
841	s->swarmSpeed = tr_rcRate( &tor->swarmSpeed, now );
842	s->rawUploadSpeed = tr_bandwidthGetRawSpeed ( tor->bandwidth, now, TR_UP );
843	s->rawDownloadSpeed = tr_bandwidthGetRawSpeed ( tor->bandwidth, now, TR_DOWN );
844	s->pieceUploadSpeed = tr_bandwidthGetPieceSpeed( tor->bandwidth, now, TR_UP );
845	s->pieceDownloadSpeed = tr_bandwidthGetPieceSpeed( tor->bandwidth, now, TR_DOWN );
846
847	usableSeeds += tor->info.webseedCount;
848
849	s->percentComplete = tr_cpPercentComplete ( &tor->completion );
850
851	s->percentDone = tr_cpPercentDone ( &tor->completion );
852	s->leftUntilDone = tr_cpLeftUntilDone( &tor->completion );
853	s->sizeWhenDone = tr_cpSizeWhenDone ( &tor->completion );
854
855	s->recheckProgress = s->activity == TR_STATUS_CHECK
856	? 1.0 -
857	( tr_torrentCountUncheckedPieces( tor ) /
858	(double) tor->info.pieceCount )
859	: 0.0;
860
861
862	s->activityDate = tor->activityDate;
863	s->addedDate = tor->addedDate;
864	s->doneDate = tor->doneDate;
865	s->startDate = tor->startDate;
866
867	s->corruptEver = tor->corruptCur + tor->corruptPrev;
868	s->downloadedEver = tor->downloadedCur + tor->downloadedPrev;
869	s->uploadedEver = tor->uploadedCur + tor->uploadedPrev;
870	s->haveValid = tr_cpHaveValid( &tor->completion );
871	s->haveUnchecked = tr_cpHaveTotal( &tor->completion ) - s->haveValid;
872
873	if( usableSeeds > 0 )
874	{
875	s->desiredAvailable = s->leftUntilDone;
876	}
877	else if( !s->leftUntilDone \|\| !s->peersConnected )
878	{
879	s->desiredAvailable = 0;
880	}
881	else
882	{
883	tr_piece_index_t i;
884	tr_bitfield * peerPieces = tr_peerMgrGetAvailable( tor );
885	s->desiredAvailable = 0;
886	for( i = 0; i < tor->info.pieceCount; ++i )
887	if( !tor->info.pieces[i].dnd && tr_bitfieldHas( peerPieces, i ) )
888	s->desiredAvailable += tr_cpMissingBlocksInPiece( &tor->completion, i );
889	s->desiredAvailable *= tor->blockSize;
890	tr_bitfieldFree( peerPieces );
891	}
892
893	downloadedForRatio = s->downloadedEver ? s->downloadedEver : s->haveValid;
894	s->ratio = tr_getRatio( s->uploadedEver, downloadedForRatio );
895
896	switch( s->activity )
897	{
898	case TR_STATUS_DOWNLOAD:
899	if( s->leftUntilDone > s->desiredAvailable )
900	s->eta = TR_ETA_NOT_AVAIL;
901	else if( s->pieceDownloadSpeed < 0.1 )
902	s->eta = TR_ETA_UNKNOWN;
903	else
904	s->eta = s->leftUntilDone / s->pieceDownloadSpeed / 1024.0;
905	break;
906
907	case TR_STATUS_SEED:
908	if( tr_torrentGetSeedRatio( tor, &seedRatio ) )
909	{
910	if( s->pieceUploadSpeed < 0.1 )
911	s->eta = TR_ETA_UNKNOWN;
912	else
913	s->eta = (downloadedForRatio * (seedRatio - s->ratio)) / s->pieceUploadSpeed / 1024.0;
914	}
915	else
916	s->eta = TR_ETA_NOT_AVAIL;
917	break;
918
919	default:
920	s->eta = TR_ETA_NOT_AVAIL;
921	break;
922	}
923
924	tr_torrentUnlock( tor );
925
926	return s;
927	}
928
929	/***
930	****
931	***/
932
933	static uint64_t
934	fileBytesCompleted( const tr_torrent * tor,
935	tr_file_index_t fileIndex )
936	{
937	const tr_file * file = &tor->info.files[fileIndex];
938	const tr_block_index_t firstBlock = file->offset /
939	tor->blockSize;
940	const uint64_t firstBlockOffset = file->offset %
941	tor->blockSize;
942	const uint64_t lastOffset =
943	file->length ? ( file->length - 1 ) : 0;
944	const tr_block_index_t lastBlock =
945	( file->offset + lastOffset ) / tor->blockSize;
946	const uint64_t lastBlockOffset =
947	( file->offset + lastOffset ) % tor->blockSize;
948	uint64_t haveBytes = 0;
949
950	assert( tr_isTorrent( tor ) );
951	assert( fileIndex < tor->info.fileCount );
952	assert( file->offset + file->length <= tor->info.totalSize );
953	assert( ( firstBlock < tor->blockCount )
954	\|\| ( !file->length && file->offset == tor->info.totalSize ) );
955	assert( ( lastBlock < tor->blockCount )
956	\|\| ( !file->length && file->offset == tor->info.totalSize ) );
957	assert( firstBlock <= lastBlock );
958	assert( tr_torBlockPiece( tor, firstBlock ) == file->firstPiece );
959	assert( tr_torBlockPiece( tor, lastBlock ) == file->lastPiece );
960
961	if( firstBlock == lastBlock )
962	{
963	if( tr_cpBlockIsComplete( &tor->completion, firstBlock ) )
964	haveBytes += lastBlockOffset + 1 - firstBlockOffset;
965	}
966	else
967	{
968	tr_block_index_t i;
969
970	if( tr_cpBlockIsComplete( &tor->completion, firstBlock ) )
971	haveBytes += tor->blockSize - firstBlockOffset;
972
973	for( i = firstBlock + 1; i < lastBlock; ++i )
974	if( tr_cpBlockIsComplete( &tor->completion, i ) )
975	haveBytes += tor->blockSize;
976
977	if( tr_cpBlockIsComplete( &tor->completion, lastBlock ) )
978	haveBytes += lastBlockOffset + 1;
979	}
980
981	return haveBytes;
982	}
983
984	tr_file_stat *
985	tr_torrentFiles( const tr_torrent * tor,
986	tr_file_index_t * fileCount )
987	{
988	tr_file_index_t i;
989	const tr_file_index_t n = tor->info.fileCount;
990	tr_file_stat * files = tr_new0( tr_file_stat, n );
991	tr_file_stat * walk = files;
992
993	assert( tr_isTorrent( tor ) );
994
995	for( i = 0; i < n; ++i, ++walk )
996	{
997	const uint64_t b = fileBytesCompleted( tor, i );
998	walk->bytesCompleted = b;
999	walk->progress = tr_getRatio( b, tor->info.files[i].length );
1000	}
1001
1002	if( fileCount )
1003	*fileCount = n;
1004
1005	return files;
1006	}
1007
1008	void
1009	tr_torrentFilesFree( tr_file_stat * files,
1010	tr_file_index_t fileCount UNUSED )
1011	{
1012	tr_free( files );
1013	}
1014
1015	/***
1016	****
1017	***/
1018
1019	float*
1020	tr_torrentWebSpeeds( const tr_torrent * tor )
1021	{
1022	return tr_isTorrent( tor )
1023	? tr_peerMgrWebSpeeds( tor )
1024	: NULL;
1025	}
1026
1027	tr_peer_stat *
1028	tr_torrentPeers( const tr_torrent * tor,
1029	int * peerCount )
1030	{
1031	tr_peer_stat * ret = NULL;
1032
1033	if( tr_isTorrent( tor ) )
1034	ret = tr_peerMgrPeerStats( tor, peerCount );
1035
1036	return ret;
1037	}
1038
1039	void
1040	tr_torrentPeersFree( tr_peer_stat * peers,
1041	int peerCount UNUSED )
1042	{
1043	tr_free( peers );
1044	}
1045
1046	void
1047	tr_torrentAvailability( const tr_torrent * tor,
1048	int8_t * tab,
1049	int size )
1050	{
1051	tr_peerMgrTorrentAvailability( tor, tab, size );
1052	}
1053
1054	void
1055	tr_torrentAmountFinished( const tr_torrent * tor,
1056	float * tab,
1057	int size )
1058	{
1059	assert( tr_isTorrent( tor ) );
1060
1061	tr_torrentLock( tor );
1062	tr_cpGetAmountDone( &tor->completion, tab, size );
1063	tr_torrentUnlock( tor );
1064	}
1065
1066	void
1067	tr_torrentResetTransferStats( tr_torrent * tor )
1068	{
1069	assert( tr_isTorrent( tor ) );
1070
1071	tr_torrentLock( tor );
1072
1073	tor->downloadedPrev += tor->downloadedCur;
1074	tor->downloadedCur = 0;
1075	tor->uploadedPrev += tor->uploadedCur;
1076	tor->uploadedCur = 0;
1077	tor->corruptPrev += tor->corruptCur;
1078	tor->corruptCur = 0;
1079
1080	tr_torrentUnlock( tor );
1081	}
1082
1083	void
1084	tr_torrentSetHasPiece( tr_torrent * tor,
1085	tr_piece_index_t pieceIndex,
1086	tr_bool has )
1087	{
1088	assert( tr_isTorrent( tor ) );
1089	assert( pieceIndex < tor->info.pieceCount );
1090
1091	if( has )
1092	tr_cpPieceAdd( &tor->completion, pieceIndex );
1093	else
1094	tr_cpPieceRem( &tor->completion, pieceIndex );
1095	}
1096
1097	/***
1098	****
1099	***/
1100
1101	static void
1102	freeTorrent( tr_torrent * tor )
1103	{
1104	tr_torrent * t;
1105	tr_session * session = tor->session;
1106	tr_info * inf = &tor->info;
1107
1108	assert( tr_isTorrent( tor ) );
1109	assert( !tor->isRunning );
1110
1111	tr_globalLock( session );
1112
1113	tr_peerMgrRemoveTorrent( tor );
1114
1115	tr_cpDestruct( &tor->completion );
1116
1117	tr_rcDestruct( &tor->swarmSpeed );
1118
1119	tr_trackerUnsubscribe( tor->tracker, tor->trackerSubscription );
1120	tr_trackerFree( tor->tracker );
1121	tor->tracker = NULL;
1122
1123	tr_bitfieldDestruct( &tor->checkedPieces );
1124
1125	tr_free( tor->downloadDir );
1126	tr_free( tor->peer_id );
1127
1128	if( tor == session->torrentList )
1129	session->torrentList = tor->next;
1130	else for( t = session->torrentList; t != NULL; t = t->next ) {
1131	if( t->next == tor ) {
1132	t->next = tor->next;
1133	break;
1134	}
1135	}
1136
1137	assert( session->torrentCount >= 1 );
1138	session->torrentCount--;
1139
1140	tr_bandwidthFree( tor->bandwidth );
1141
1142	tr_metainfoFree( inf );
1143	tr_free( tor );
1144
1145	tr_globalUnlock( session );
1146	}
1147
1148	/**
1149	*** Start/Stop Callback
1150	**/
1151
1152	static void
1153	checkAndStartImpl( void * vtor )
1154	{
1155	tr_torrent * tor = vtor;
1156
1157	assert( tr_isTorrent( tor ) );
1158
1159	tr_globalLock( tor->session );
1160
1161	tor->isRunning = 1;
1162	*tor->errorString = '\0';
1163	tr_torrentResetTransferStats( tor );
1164	tor->completeness = tr_cpGetStatus( &tor->completion );
1165	tr_torrentSaveResume( tor );
1166	tor->startDate = time( NULL );
1167	tr_trackerStart( tor->tracker );
1168	tr_peerMgrStartTorrent( tor );
1169
1170	tr_globalUnlock( tor->session );
1171	}
1172
1173	static void
1174	checkAndStartCB( tr_torrent * tor )
1175	{
1176	assert( tr_isTorrent( tor ) );
1177	assert( tr_isSession( tor->session ) );
1178
1179	tr_runInEventThread( tor->session, checkAndStartImpl, tor );
1180	}
1181
1182	static void
1183	torrentStart( tr_torrent * tor,
1184	int reloadProgress )
1185	{
1186	assert( tr_isTorrent( tor ) );
1187
1188	tr_globalLock( tor->session );
1189
1190	if( !tor->isRunning )
1191	{
1192	const int isVerifying = tr_verifyInProgress( tor );
1193
1194	if( !isVerifying && reloadProgress )
1195	tr_torrentLoadResume( tor, TR_FR_PROGRESS, NULL );
1196
1197	tor->isRunning = 1;
1198
1199	if( !isVerifying )
1200	tr_verifyAdd( tor, checkAndStartCB );
1201	}
1202
1203	tr_globalUnlock( tor->session );
1204	}
1205
1206	void
1207	tr_torrentStart( tr_torrent * tor )
1208	{
1209	if( tr_isTorrent( tor ) )
1210	torrentStart( tor, TRUE );
1211	}
1212
1213	static void
1214	torrentRecheckDoneImpl( void * vtor )
1215	{
1216	tr_torrent * tor = vtor;
1217
1218	assert( tr_isTorrent( tor ) );
1219	tr_torrentRecheckCompleteness( tor );
1220	}
1221
1222	static void
1223	torrentRecheckDoneCB( tr_torrent * tor )
1224	{
1225	assert( tr_isTorrent( tor ) );
1226
1227	tr_runInEventThread( tor->session, torrentRecheckDoneImpl, tor );
1228	}
1229
1230	void
1231	tr_torrentVerify( tr_torrent * tor )
1232	{
1233	assert( tr_isTorrent( tor ) );
1234
1235	tr_verifyRemove( tor );
1236
1237	tr_globalLock( tor->session );
1238
1239	tr_torrentUncheck( tor );
1240	tr_verifyAdd( tor, torrentRecheckDoneCB );
1241
1242	tr_globalUnlock( tor->session );
1243	}
1244
1245	static void
1246	tr_torrentCloseLocalFiles( const tr_torrent * tor )
1247	{
1248	tr_file_index_t i;
1249	struct evbuffer * buf = evbuffer_new( );
1250
1251	assert( tr_isTorrent( tor ) );
1252
1253	for( i=0; i<tor->info.fileCount; ++i )
1254	{
1255	const tr_file * file = &tor->info.files[i];
1256	evbuffer_drain( buf, EVBUFFER_LENGTH( buf ) );
1257	evbuffer_add_printf( buf, "%s%s%s", tor->downloadDir, TR_PATH_DELIMITER_STR, file->name );
1258	tr_fdFileClose( (const char*) EVBUFFER_DATA( buf ) );
1259	}
1260
1261	evbuffer_free( buf );
1262	}
1263
1264
1265	static void
1266	stopTorrent( void * vtor )
1267	{
1268	tr_torrent * tor = vtor;
1269
1270	assert( tr_isTorrent( tor ) );
1271
1272	tr_verifyRemove( tor );
1273	tr_peerMgrStopTorrent( tor );
1274	tr_trackerStop( tor->tracker );
1275
1276	tr_torrentCloseLocalFiles( tor );
1277	}
1278
1279	void
1280	tr_torrentStop( tr_torrent * tor )
1281	{
1282	if( tr_isTorrent( tor ) )
1283	{
1284	tr_globalLock( tor->session );
1285
1286	tor->isRunning = 0;
1287	if( !tor->isDeleting )
1288	tr_torrentSaveResume( tor );
1289	tr_runInEventThread( tor->session, stopTorrent, tor );
1290
1291	tr_globalUnlock( tor->session );
1292	}
1293	}
1294
1295	static void
1296	closeTorrent( void * vtor )
1297	{
1298	tr_torrent * tor = vtor;
1299
1300	assert( tr_isTorrent( tor ) );
1301
1302	tr_torrentSaveResume( tor );
1303	tor->isRunning = 0;
1304	stopTorrent( tor );
1305	if( tor->isDeleting )
1306	{
1307	tr_metainfoRemoveSaved( tor->session, &tor->info );
1308	tr_torrentRemoveResume( tor );
1309	}
1310	freeTorrent( tor );
1311	}
1312
1313	void
1314	tr_torrentFree( tr_torrent * tor )
1315	{
1316	if( tr_isTorrent( tor ) )
1317	{
1318	tr_session * session = tor->session;
1319	assert( tr_isSession( session ) );
1320	tr_globalLock( session );
1321
1322	tr_torrentClearCompletenessCallback( tor );
1323	tr_runInEventThread( session, closeTorrent, tor );
1324
1325	tr_globalUnlock( session );
1326	}
1327	}
1328
1329	void
1330	tr_torrentRemove( tr_torrent * tor )
1331	{
1332	assert( tr_isTorrent( tor ) );
1333
1334	tor->isDeleting = 1;
1335	tr_torrentFree( tor );
1336	}
1337
1338	/**
1339	*** Completeness
1340	**/
1341
1342	static const char *
1343	getCompletionString( int type )
1344	{
1345	switch( type )
1346	{
1347	/* Translators: this is a minor point that's safe to skip over, but FYI:
1348	"Complete" and "Done" are specific, different terms in Transmission:
1349	"Complete" means we've downloaded every file in the torrent.
1350	"Done" means we're done downloading the files we wanted, but NOT all
1351	that exist */
1352	case TR_PARTIAL_SEED:
1353	return _( "Done" );
1354
1355	case TR_SEED:
1356	return _( "Complete" );
1357
1358	default:
1359	return _( "Incomplete" );
1360	}
1361	}
1362
1363	static void
1364	fireCompletenessChange( tr_torrent * tor,
1365	tr_completeness status )
1366	{
1367	assert( tr_isTorrent( tor ) );
1368	assert( ( status == TR_LEECH )
1369	\|\| ( status == TR_SEED )
1370	\|\| ( status == TR_PARTIAL_SEED ) );
1371
1372	if( tor->completeness_func )
1373	tor->completeness_func( tor, status, tor->completeness_func_user_data );
1374	}
1375
1376	void
1377	tr_torrentSetCompletenessCallback( tr_torrent * tor,
1378	tr_torrent_completeness_func func,
1379	void * user_data )
1380	{
1381	assert( tr_isTorrent( tor ) );
1382
1383	tor->completeness_func = func;
1384	tor->completeness_func_user_data = user_data;
1385	}
1386
1387	void
1388	tr_torrentSetRatioLimitHitCallback( tr_torrent * tor,
1389	tr_torrent_ratio_limit_hit_func func,
1390	void * user_data )
1391	{
1392	assert( tr_isTorrent( tor ) );
1393
1394	tor->ratio_limit_hit_func = func;
1395	tor->ratio_limit_hit_func_user_data = user_data;
1396	}
1397
1398	void
1399	tr_torrentClearCompletenessCallback( tr_torrent * torrent )
1400	{
1401	tr_torrentSetCompletenessCallback( torrent, NULL, NULL );
1402	}
1403
1404	void
1405	tr_torrentClearRatioLimitHitCallback( tr_torrent * torrent )
1406	{
1407	tr_torrentSetRatioLimitHitCallback( torrent, NULL, NULL );
1408	}
1409
1410	void
1411	tr_torrentRecheckCompleteness( tr_torrent * tor )
1412	{
1413	tr_completeness completeness;
1414
1415	assert( tr_isTorrent( tor ) );
1416
1417	tr_torrentLock( tor );
1418
1419	completeness = tr_cpGetStatus( &tor->completion );
1420
1421	if( completeness != tor->completeness )
1422	{
1423	const int recentChange = tor->downloadedCur != 0;
1424
1425	if( recentChange )
1426	{
1427	tr_torinf( tor, _( "State changed from \"%1$s\" to \"%2$s\"" ),
1428	getCompletionString( tor->completeness ),
1429	getCompletionString( completeness ) );
1430	}
1431
1432	tor->completeness = completeness;
1433	tr_torrentCloseLocalFiles( tor );
1434	fireCompletenessChange( tor, completeness );
1435
1436	if( recentChange && ( completeness == TR_SEED ) )
1437	{
1438	tr_trackerCompleted( tor->tracker );
1439
1440	tor->doneDate = time( NULL );
1441	}
1442
1443	tr_torrentSaveResume( tor );
1444	}
1445
1446	tr_torrentUnlock( tor );
1447	}
1448
1449	/**
1450	*** File priorities
1451	**/
1452
1453	void
1454	tr_torrentInitFilePriority( tr_torrent * tor,
1455	tr_file_index_t fileIndex,
1456	tr_priority_t priority )
1457	{
1458	tr_piece_index_t i;
1459	tr_file * file;
1460
1461	assert( tr_isTorrent( tor ) );
1462	assert( fileIndex < tor->info.fileCount );
1463	assert( priority == TR_PRI_LOW \|\| priority == TR_PRI_NORMAL \|\| priority == TR_PRI_HIGH );
1464
1465	file = &tor->info.files[fileIndex];
1466	file->priority = priority;
1467	for( i = file->firstPiece; i <= file->lastPiece; ++i )
1468	tor->info.pieces[i].priority = calculatePiecePriority( tor, i,
1469	fileIndex );
1470	}
1471
1472	void
1473	tr_torrentSetFilePriorities( tr_torrent * tor,
1474	tr_file_index_t * files,
1475	tr_file_index_t fileCount,
1476	tr_priority_t priority )
1477	{
1478	tr_file_index_t i;
1479
1480	assert( tr_isTorrent( tor ) );
1481
1482	tr_torrentLock( tor );
1483
1484	for( i = 0; i < fileCount; ++i )
1485	tr_torrentInitFilePriority( tor, files[i], priority );
1486
1487	tr_torrentSaveResume( tor );
1488	tr_torrentUnlock( tor );
1489	}
1490
1491	tr_priority_t
1492	tr_torrentGetFilePriority( const tr_torrent * tor,
1493	tr_file_index_t file )
1494	{
1495	tr_priority_t ret;
1496
1497	assert( tr_isTorrent( tor ) );
1498
1499	tr_torrentLock( tor );
1500	assert( tor );
1501	assert( file < tor->info.fileCount );
1502	ret = tor->info.files[file].priority;
1503	tr_torrentUnlock( tor );
1504
1505	return ret;
1506	}
1507
1508	tr_priority_t*
1509	tr_torrentGetFilePriorities( const tr_torrent * tor )
1510	{
1511	tr_file_index_t i;
1512	tr_priority_t * p;
1513
1514	assert( tr_isTorrent( tor ) );
1515
1516	tr_torrentLock( tor );
1517	p = tr_new0( tr_priority_t, tor->info.fileCount );
1518	for( i = 0; i < tor->info.fileCount; ++i )
1519	p[i] = tor->info.files[i].priority;
1520	tr_torrentUnlock( tor );
1521
1522	return p;
1523	}
1524
1525	/**
1526	*** File DND
1527	**/
1528
1529	int
1530	tr_torrentGetFileDL( const tr_torrent * tor,
1531	tr_file_index_t file )
1532	{
1533	int doDownload;
1534
1535	assert( tr_isTorrent( tor ) );
1536
1537	tr_torrentLock( tor );
1538
1539	assert( file < tor->info.fileCount );
1540	doDownload = !tor->info.files[file].dnd;
1541
1542	tr_torrentUnlock( tor );
1543	return doDownload != 0;
1544	}
1545
1546	static void
1547	setFileDND( tr_torrent * tor,
1548	tr_file_index_t fileIndex,
1549	int doDownload )
1550	{
1551	tr_file * file;
1552	const int dnd = !doDownload;
1553	tr_piece_index_t firstPiece, firstPieceDND;
1554	tr_piece_index_t lastPiece, lastPieceDND;
1555	tr_file_index_t i;
1556
1557	assert( tr_isTorrent( tor ) );
1558
1559	file = &tor->info.files[fileIndex];
1560	file->dnd = dnd;
1561	firstPiece = file->firstPiece;
1562	lastPiece = file->lastPiece;
1563
1564	/* can't set the first piece to DND unless
1565	every file using that piece is DND */
1566	firstPieceDND = dnd;
1567	if( fileIndex > 0 )
1568	{
1569	for( i = fileIndex - 1; firstPieceDND; --i )
1570	{
1571	if( tor->info.files[i].lastPiece != firstPiece )
1572	break;
1573	firstPieceDND = tor->info.files[i].dnd;
1574	if( !i )
1575	break;
1576	}
1577	}
1578
1579	/* can't set the last piece to DND unless
1580	every file using that piece is DND */
1581	lastPieceDND = dnd;
1582	for( i = fileIndex + 1; lastPieceDND && i < tor->info.fileCount; ++i )
1583	{
1584	if( tor->info.files[i].firstPiece != lastPiece )
1585	break;
1586	lastPieceDND = tor->info.files[i].dnd;
1587	}
1588
1589	if( firstPiece == lastPiece )
1590	{
1591	tor->info.pieces[firstPiece].dnd = firstPieceDND && lastPieceDND;
1592	}
1593	else
1594	{
1595	tr_piece_index_t pp;
1596	tor->info.pieces[firstPiece].dnd = firstPieceDND;
1597	tor->info.pieces[lastPiece].dnd = lastPieceDND;
1598	for( pp = firstPiece + 1; pp < lastPiece; ++pp )
1599	tor->info.pieces[pp].dnd = dnd;
1600	}
1601	}
1602
1603	void
1604	tr_torrentInitFileDLs( tr_torrent * tor,
1605	tr_file_index_t * files,
1606	tr_file_index_t fileCount,
1607	tr_bool doDownload )
1608	{
1609	tr_file_index_t i;
1610
1611	assert( tr_isTorrent( tor ) );
1612
1613	tr_torrentLock( tor );
1614
1615	for( i = 0; i < fileCount; ++i )
1616	setFileDND( tor, files[i], doDownload );
1617	tr_cpInvalidateDND ( &tor->completion );
1618
1619	tr_torrentUnlock( tor );
1620	}
1621
1622	void
1623	tr_torrentSetFileDLs( tr_torrent * tor,
1624	tr_file_index_t * files,
1625	tr_file_index_t fileCount,
1626	tr_bool doDownload )
1627	{
1628	assert( tr_isTorrent( tor ) );
1629
1630	tr_torrentLock( tor );
1631	tr_torrentInitFileDLs( tor, files, fileCount, doDownload );
1632	tr_torrentSaveResume( tor );
1633	tr_torrentUnlock( tor );
1634	}
1635
1636	/***
1637	****
1638	***/
1639
1640	void
1641	tr_torrentSetPeerLimit( tr_torrent * tor,
1642	uint16_t maxConnectedPeers )
1643	{
1644	assert( tr_isTorrent( tor ) );
1645
1646	tor->maxConnectedPeers = maxConnectedPeers;
1647	}
1648
1649	uint16_t
1650	tr_torrentGetPeerLimit( const tr_torrent * tor )
1651	{
1652	assert( tr_isTorrent( tor ) );
1653
1654	return tor->maxConnectedPeers;
1655	}
1656
1657	/***
1658	****
1659	***/
1660
1661	tr_block_index_t
1662	_tr_block( const tr_torrent * tor,
1663	tr_piece_index_t index,
1664	uint32_t offset )
1665	{
1666	tr_block_index_t ret;
1667
1668	assert( tr_isTorrent( tor ) );
1669
1670	ret = index;
1671	ret *= ( tor->info.pieceSize / tor->blockSize );
1672	ret += offset / tor->blockSize;
1673	return ret;
1674	}
1675
1676	tr_bool
1677	tr_torrentReqIsValid( const tr_torrent * tor,
1678	tr_piece_index_t index,
1679	uint32_t offset,
1680	uint32_t length )
1681	{
1682	int err = 0;
1683
1684	assert( tr_isTorrent( tor ) );
1685
1686	if( index >= tor->info.pieceCount )
1687	err = 1;
1688	else if( length < 1 )
1689	err = 2;
1690	else if( ( offset + length ) > tr_torPieceCountBytes( tor, index ) )
1691	err = 3;
1692	else if( length > MAX_BLOCK_SIZE )
1693	err = 4;
1694	else if( tr_pieceOffset( tor, index, offset, length ) > tor->info.totalSize )
1695	err = 5;
1696
1697	if( err ) fprintf( stderr, "index %lu offset %lu length %lu err %d\n",
1698	(unsigned long)index, (unsigned long)offset,
1699	(unsigned long)length,
1700	err );
1701
1702	return !err;
1703	}
1704
1705	uint64_t
1706	tr_pieceOffset( const tr_torrent * tor,
1707	tr_piece_index_t index,
1708	uint32_t offset,
1709	uint32_t length )
1710	{
1711	uint64_t ret;
1712
1713	assert( tr_isTorrent( tor ) );
1714
1715	ret = tor->info.pieceSize;
1716	ret *= index;
1717	ret += offset;
1718	ret += length;
1719	return ret;
1720	}
1721
1722	/***
1723	****
1724	***/
1725
1726	void
1727	tr_torrentSetPieceChecked( tr_torrent * tor,
1728	tr_piece_index_t piece,
1729	tr_bool isChecked )
1730	{
1731	assert( tr_isTorrent( tor ) );
1732
1733	if( isChecked )
1734	tr_bitfieldAdd( &tor->checkedPieces, piece );
1735	else
1736	tr_bitfieldRem( &tor->checkedPieces, piece );
1737	}
1738
1739	void
1740	tr_torrentSetFileChecked( tr_torrent * tor,
1741	tr_file_index_t fileIndex,
1742	tr_bool isChecked )
1743	{
1744	const tr_file * file = &tor->info.files[fileIndex];
1745	const tr_piece_index_t begin = file->firstPiece;
1746	const tr_piece_index_t end = file->lastPiece + 1;
1747
1748	assert( tr_isTorrent( tor ) );
1749
1750	if( isChecked )
1751	tr_bitfieldAddRange ( &tor->checkedPieces, begin, end );
1752	else
1753	tr_bitfieldRemRange ( &tor->checkedPieces, begin, end );
1754	}
1755
1756	tr_bool
1757	tr_torrentIsFileChecked( const tr_torrent * tor,
1758	tr_file_index_t fileIndex )
1759	{
1760	const tr_file * file = &tor->info.files[fileIndex];
1761	const tr_piece_index_t begin = file->firstPiece;
1762	const tr_piece_index_t end = file->lastPiece + 1;
1763	tr_piece_index_t i;
1764	tr_bool isChecked = TRUE;
1765
1766	assert( tr_isTorrent( tor ) );
1767
1768	for( i = begin; isChecked && i < end; ++i )
1769	if( !tr_torrentIsPieceChecked( tor, i ) )
1770	isChecked = FALSE;
1771
1772	return isChecked;
1773	}
1774
1775	void
1776	tr_torrentUncheck( tr_torrent * tor )
1777	{
1778	assert( tr_isTorrent( tor ) );
1779
1780	tr_bitfieldRemRange ( &tor->checkedPieces, 0, tor->info.pieceCount );
1781	}
1782
1783	int
1784	tr_torrentCountUncheckedPieces( const tr_torrent * tor )
1785	{
1786	assert( tr_isTorrent( tor ) );
1787
1788	return tor->info.pieceCount - tr_bitfieldCountTrueBits( &tor->checkedPieces );
1789	}
1790
1791	time_t*
1792	tr_torrentGetMTimes( const tr_torrent * tor,
1793	size_t * setme_n )
1794	{
1795	size_t i;
1796	const size_t n = tor->info.fileCount;
1797	time_t * m = tr_new0( time_t, n );
1798
1799	assert( tr_isTorrent( tor ) );
1800
1801	for( i = 0; i < n; ++i )
1802	{
1803	struct stat sb;
1804	char * path = tr_buildPath( tor->downloadDir, tor->info.files[i].name, NULL );
1805	if( !stat( path, &sb ) )
1806	{
1807	#ifdef SYS_DARWIN
1808	m[i] = sb.st_mtimespec.tv_sec;
1809	#else
1810	m[i] = sb.st_mtime;
1811	#endif
1812	}
1813	tr_free( path );
1814	}
1815
1816	*setme_n = n;
1817	return m;
1818	}
1819
1820	/***
1821	****
1822	***/
1823
1824	void
1825	tr_torrentSetAnnounceList( tr_torrent * tor,
1826	const tr_tracker_info * trackers,
1827	int trackerCount )
1828	{
1829	tr_benc metainfo;
1830
1831	assert( tr_isTorrent( tor ) );
1832
1833	/* save to the .torrent file */
1834	if( !tr_bencLoadFile( tor->info.torrent, &metainfo ) )
1835	{
1836	int i;
1837	int prevTier = -1;
1838	tr_benc * tier = NULL;
1839	tr_benc * announceList;
1840	tr_info tmpInfo;
1841
1842	/* remove the old fields */
1843	tr_bencDictRemove( &metainfo, "announce" );
1844	tr_bencDictRemove( &metainfo, "announce-list" );
1845
1846	/* add the new fields */
1847	tr_bencDictAddStr( &metainfo, "announce", trackers[0].announce );
1848	announceList = tr_bencDictAddList( &metainfo, "announce-list", 0 );
1849	for( i = 0; i < trackerCount; ++i ) {
1850	if( prevTier != trackers[i].tier ) {
1851	prevTier = trackers[i].tier;
1852	tier = tr_bencListAddList( announceList, 0 );
1853	}
1854	tr_bencListAddStr( tier, trackers[i].announce );
1855	}
1856
1857	/* try to parse it back again, to make sure it's good */
1858	memset( &tmpInfo, 0, sizeof( tr_info ) );
1859	if( !tr_metainfoParse( tor->session, &tmpInfo, &metainfo ) )
1860	{
1861	/* it's good, so keep these new trackers and free the old ones */
1862
1863	tr_info swap;
1864	swap.trackers = tor->info.trackers;
1865	swap.trackerCount = tor->info.trackerCount;
1866	tor->info.trackers = tmpInfo.trackers;
1867	tor->info.trackerCount = tmpInfo.trackerCount;
1868	tmpInfo.trackers = swap.trackers;
1869	tmpInfo.trackerCount = swap.trackerCount;
1870
1871	tr_metainfoFree( &tmpInfo );
1872	tr_bencSaveFile( tor->info.torrent, &metainfo );
1873	}
1874
1875	/* cleanup */
1876	tr_bencFree( &metainfo );
1877	}
1878	}
1879
1880	/**
1881	***
1882	**/
1883
1884	/** @deprecated this method will be removed in 1.40 */
1885	void
1886	tr_torrentSetAddedDate( tr_torrent * tor,
1887	time_t t )
1888	{
1889	assert( tr_isTorrent( tor ) );
1890
1891	tor->addedDate = t;
1892	}
1893
1894	/** @deprecated this method will be removed in 1.40 */
1895	void
1896	tr_torrentSetActivityDate( tr_torrent * tor,
1897	time_t t )
1898	{
1899	assert( tr_isTorrent( tor ) );
1900
1901	tor->activityDate = t;
1902	}
1903
1904	/** @deprecated this method will be removed in 1.40 */
1905	void
1906	tr_torrentSetDoneDate( tr_torrent * tor,
1907	time_t t )
1908	{
1909	assert( tr_isTorrent( tor ) );
1910
1911	tor->doneDate = t;
1912	}
1913
1914	/**
1915	***
1916	**/
1917
1918	uint64_t
1919	tr_torrentGetBytesLeftToAllocate( const tr_torrent * tor )
1920	{
1921	const tr_file * it;
1922	const tr_file * end;
1923	struct stat sb;
1924	uint64_t bytesLeft = 0;
1925
1926	assert( tr_isTorrent( tor ) );
1927
1928	for( it=tor->info.files, end=it+tor->info.fileCount; it!=end; ++it )
1929	{
1930	if( !it->dnd )
1931	{
1932	char * path = tr_buildPath( tor->downloadDir, it->name, NULL );
1933
1934	bytesLeft += it->length;
1935
1936	if( !stat( path, &sb )
1937	&& S_ISREG( sb.st_mode )
1938	&& ( (uint64_t)sb.st_size <= it->length ) )
1939	bytesLeft -= sb.st_size;
1940
1941	tr_free( path );
1942	}
1943	}
1944
1945	return bytesLeft;
1946	}
1947
1948	/****
1949	***** Removing the torrent's local data
1950	****/
1951
1952	static int
1953	vstrcmp( const void * a, const void * b )
1954	{
1955	return strcmp( a, b );
1956	}
1957
1958	static int
1959	compareLongestFirst( const void * a, const void * b )
1960	{
1961	const size_t alen = strlen( a );
1962	const size_t blen = strlen( b );
1963
1964	if( alen != blen )
1965	return alen > blen ? -1 : 1;
1966
1967	return vstrcmp( a, b );
1968	}
1969
1970	static void
1971	addDirtyFile( const char * root,
1972	const char * filename,
1973	tr_ptrArray * dirtyFolders )
1974	{
1975	char * dir = tr_dirname( filename );
1976
1977	/* add the parent folders to dirtyFolders until we reach the root or a known-dirty */
1978	while ( ( dir != NULL )
1979	&& ( strlen( root ) <= strlen( dir ) )
1980	&& ( tr_ptrArrayFindSorted( dirtyFolders, dir, vstrcmp ) == NULL ) )
1981	{
1982	char * tmp;
1983	tr_ptrArrayInsertSorted( dirtyFolders, tr_strdup( dir ), vstrcmp );
1984
1985	tmp = tr_dirname( dir );
1986	tr_free( dir );
1987	dir = tmp;
1988	}
1989
1990	tr_free( dir );
1991	}
1992
1993	static void
1994	walkLocalData( const tr_torrent * tor,
1995	const char * root,
1996	const char * dir,
1997	const char * base,
1998	tr_ptrArray * torrentFiles,
1999	tr_ptrArray * folders,
2000	tr_ptrArray * dirtyFolders )
2001	{
2002	int i;
2003	struct stat sb;
2004	char * buf;
2005
2006	assert( tr_isTorrent( tor ) );
2007
2008	buf = tr_buildPath( dir, base, NULL );
2009	i = stat( buf, &sb );
2010	if( !i )
2011	{
2012	DIR * odir = NULL;
2013
2014	if( S_ISDIR( sb.st_mode ) && ( ( odir = opendir ( buf ) ) ) )
2015	{
2016	struct dirent *d;
2017	tr_ptrArrayInsertSorted( folders, tr_strdup( buf ), vstrcmp );
2018	for( d = readdir( odir ); d != NULL; d = readdir( odir ) )
2019	if( d->d_name && d->d_name[0] != '.' ) /* skip dotfiles */
2020	walkLocalData( tor, root, buf, d->d_name, torrentFiles, folders, dirtyFolders );
2021	closedir( odir );
2022	}
2023	else if( S_ISREG( sb.st_mode ) && ( sb.st_size > 0 ) )
2024	{
2025	const char * sub = buf + strlen( tor->downloadDir ) + strlen( TR_PATH_DELIMITER_STR );
2026	const tr_bool isTorrentFile = tr_ptrArrayFindSorted( torrentFiles, sub, vstrcmp ) != NULL;
2027	if( !isTorrentFile )
2028	addDirtyFile( root, buf, dirtyFolders );
2029	}
2030	}
2031
2032	tr_free( buf );
2033	}
2034
2035	static void
2036	deleteLocalData( tr_torrent * tor, tr_fileFunc fileFunc )
2037	{
2038	int i, n;
2039	char ** s;
2040	tr_file_index_t f;
2041	tr_ptrArray torrentFiles = TR_PTR_ARRAY_INIT;
2042	tr_ptrArray folders = TR_PTR_ARRAY_INIT;
2043	tr_ptrArray dirtyFolders = TR_PTR_ARRAY_INIT; /* dirty == contains non-torrent files */
2044
2045	const char * firstFile = tor->info.files[0].name;
2046	const char * cpch = strchr( firstFile, TR_PATH_DELIMITER );
2047	char * tmp = cpch ? tr_strndup( firstFile, cpch - firstFile ) : NULL;
2048	char * root = tr_buildPath( tor->downloadDir, tmp, NULL );
2049
2050	assert( tr_isTorrent( tor ) );
2051
2052	for( f=0; f<tor->info.fileCount; ++f )
2053	tr_ptrArrayInsertSorted( &torrentFiles, tor->info.files[f].name, vstrcmp );
2054
2055	/* build the set of folders and dirtyFolders */
2056	walkLocalData( tor, root, root, NULL, &torrentFiles, &folders, &dirtyFolders );
2057
2058	/* try to remove entire folders first, so that the recycle bin will be tidy */
2059	s = (char**) tr_ptrArrayPeek( &folders, &n );
2060	for( i=0; i<n; ++i )
2061	if( tr_ptrArrayFindSorted( &dirtyFolders, s[i], vstrcmp ) == NULL )
2062	fileFunc( s[i] );
2063
2064	/* now blow away any remaining torrent files, such as torrent files in dirty folders */
2065	for( f=0; f<tor->info.fileCount; ++f ) {
2066	char * path = tr_buildPath( tor->downloadDir, tor->info.files[f].name, NULL );
2067	fileFunc( path );
2068	tr_free( path );
2069	}
2070
2071	/* Now clean out the directories left empty from the previous step.
2072	* Work from deepest to shallowest s.t. lower folders
2073	* won't prevent the upper folders from being deleted */
2074	{
2075	tr_ptrArray cleanFolders = TR_PTR_ARRAY_INIT;
2076	s = (char**) tr_ptrArrayPeek( &folders, &n );
2077	for( i=0; i<n; ++i )
2078	if( tr_ptrArrayFindSorted( &dirtyFolders, s[i], vstrcmp ) == NULL )
2079	tr_ptrArrayInsertSorted( &cleanFolders, s[i], compareLongestFirst );
2080	s = (char**) tr_ptrArrayPeek( &cleanFolders, &n );
2081	for( i=0; i<n; ++i )
2082	fileFunc( s[i] );
2083	tr_ptrArrayDestruct( &cleanFolders, NULL );
2084	}
2085
2086	/* cleanup */
2087	tr_ptrArrayDestruct( &dirtyFolders, tr_free );
2088	tr_ptrArrayDestruct( &folders, tr_free );
2089	tr_ptrArrayDestruct( &torrentFiles, NULL );
2090	tr_free( root );
2091	tr_free( tmp );
2092	}
2093
2094	void
2095	tr_torrentDeleteLocalData( tr_torrent * tor, tr_fileFunc fileFunc )
2096	{
2097	assert( tr_isTorrent( tor ) );
2098
2099	if( fileFunc == NULL )
2100	fileFunc = remove;
2101
2102	/* close all the files because we're about to delete them */
2103	tr_torrentCloseLocalFiles( tor );
2104
2105	if( tor->info.fileCount > 1 )
2106	deleteLocalData( tor, fileFunc );
2107	else {
2108	/* torrent only has one file */
2109	char * path = tr_buildPath( tor->downloadDir, tor->info.files[0].name, NULL );
2110	fileFunc( path );
2111	tr_free( path );
2112	}
2113	}

Note: See TracBrowser for help on using the repository browser.

Download in other formats: