source: trunk/libtransmission/transmission.c @ 1064

Last change on this file since 1064 was 1064, checked in by titer, 15 years ago

Adds progress in tr_peer_stat_t

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1/******************************************************************************
2 * $Id: transmission.c 1064 2006-11-10 04:21:46Z titer $
3 *
4 * Copyright (c) 2005-2006 Transmission authors and contributors
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *****************************************************************************/
24
25#include "transmission.h"
26
27/***********************************************************************
28 * Local prototypes
29 **********************************************************************/
30static tr_torrent_t * torrentRealInit( tr_handle_t *, tr_torrent_t * tor,
31                                       int flags, int * error );
32static void torrentReallyStop( tr_torrent_t * );
33static void  downloadLoop( void * );
34static void  acceptLoop( void * );
35static void acceptStop( tr_handle_t * h );
36
37/***********************************************************************
38 * tr_init
39 ***********************************************************************
40 * Allocates a tr_handle_t structure and initializes a few things
41 **********************************************************************/
42tr_handle_t * tr_init()
43{
44    tr_handle_t * h;
45    int           i, r;
46
47    tr_msgInit();
48    tr_netResolveThreadInit();
49
50    h = calloc( sizeof( tr_handle_t ), 1 );
51
52    /* Generate a peer id : "-TRxxyy-" + 12 random alphanumeric
53       characters, where xx is the major version number and yy the
54       minor version number (Azureus-style) */
55    sprintf( h->id, "-TR%02d%02d-", VERSION_MAJOR, VERSION_MINOR );
56    for( i = 8; i < 20; i++ )
57    {
58        r        = tr_rand( 36 );
59        h->id[i] = ( r < 26 ) ? ( 'a' + r ) : ( '0' + r - 26 ) ;
60    }
61
62    /* Random key */
63    for( i = 0; i < 20; i++ )
64    {
65        r         = tr_rand( 36 );
66        h->key[i] = ( r < 26 ) ? ( 'a' + r ) : ( '0' + r - 26 ) ;
67    }
68
69    /* Don't exit when writing on a broken socket */
70    signal( SIGPIPE, SIG_IGN );
71
72    /* Initialize rate and file descripts controls */
73    h->upload   = tr_rcInit();
74    h->download = tr_rcInit();
75    h->fdlimit  = tr_fdInit();
76    h->choking  = tr_chokingInit( h );
77    h->natpmp   = tr_natpmpInit( h->fdlimit );
78    h->upnp     = tr_upnpInit( h->fdlimit );
79
80    h->bindPort = -1;
81    h->bindSocket = -1;
82
83    h->acceptDie = 0;
84    tr_lockInit( &h->acceptLock );
85    tr_threadCreate( &h->acceptThread, acceptLoop, h );
86
87    return h;
88}
89
90/***********************************************************************
91 * tr_setBindPort
92 ***********************************************************************
93 *
94 **********************************************************************/
95void tr_setBindPort( tr_handle_t * h, int port )
96{
97    int sock = -1;
98    tr_torrent_t * tor;
99
100    if( h->bindPort == port )
101      return;
102
103#ifndef BEOS_NETSERVER
104    /* BeOS net_server seems to be unable to set incoming connections to
105       non-blocking. Too bad. */
106    if( !tr_fdSocketWillCreate( h->fdlimit, 0 ) )
107    {
108        /* XXX should handle failure here in a better way */
109        sock = tr_netBindTCP( port );
110        if( 0 > sock)
111        {
112            tr_fdSocketClosed( h->fdlimit, 0 );
113        }
114        else
115        {   
116            tr_inf( "Bound listening port %d", port );
117            listen( sock, 5 );
118        }
119    }
120#else
121    return;
122#endif
123
124    tr_lockLock( &h->acceptLock );
125
126    h->bindPort = port;
127
128    for( tor = h->torrentList; tor; tor = tor->next )
129    {
130        tr_lockLock( &tor->lock );
131        if( NULL != tor->tracker )
132        {
133            tr_trackerChangePort( tor->tracker, port );
134        }
135        tr_lockUnlock( &tor->lock );
136    }
137
138    if( h->bindSocket > -1 )
139    {
140        tr_netClose( h->bindSocket );
141        tr_fdSocketClosed( h->fdlimit, 0 );
142    }
143
144    h->bindSocket = sock;
145
146    tr_natpmpForwardPort( h->natpmp, port );
147    tr_upnpForwardPort( h->upnp, port );
148
149    tr_lockUnlock( &h->acceptLock );
150}
151
152void tr_natTraversalEnable( tr_handle_t * h )
153{
154    tr_natpmpStart( h->natpmp );
155    tr_upnpStart( h->upnp );
156}
157
158void tr_natTraversalDisable( tr_handle_t * h )
159{
160    tr_natpmpStop( h->natpmp );
161    tr_upnpStop( h->upnp );
162}
163
164int tr_natTraversalStatus( tr_handle_t * h )
165{
166    int statuses[] = {
167        TR_NAT_TRAVERSAL_MAPPED,
168        TR_NAT_TRAVERSAL_MAPPING,
169        TR_NAT_TRAVERSAL_UNMAPPING,
170        TR_NAT_TRAVERSAL_ERROR,
171        TR_NAT_TRAVERSAL_NOTFOUND,
172        TR_NAT_TRAVERSAL_DISABLED,
173        -1,
174    };
175    int natpmp, upnp, ii;
176
177    natpmp = tr_natpmpStatus( h->natpmp );
178    upnp = tr_upnpStatus( h->upnp );
179
180    for( ii = 0; 0 <= statuses[ii]; ii++ )
181    {
182        if( statuses[ii] == natpmp || statuses[ii] == upnp )
183        {
184            return statuses[ii];
185        }
186    }
187
188    assert( 0 );
189
190    return TR_NAT_TRAVERSAL_ERROR;
191}
192
193/***********************************************************************
194 * tr_setUploadLimit
195 ***********************************************************************
196 *
197 **********************************************************************/
198void tr_setUploadLimit( tr_handle_t * h, int limit )
199{
200    tr_rcSetLimit( h->upload, limit );
201    tr_chokingSetLimit( h->choking, limit );
202}
203
204/***********************************************************************
205 * tr_setDownloadLimit
206 ***********************************************************************
207 *
208 **********************************************************************/
209void tr_setDownloadLimit( tr_handle_t * h, int limit )
210{
211    tr_rcSetLimit( h->download, limit );
212}
213
214/***********************************************************************
215 * tr_torrentRates
216 ***********************************************************************
217 *
218 **********************************************************************/
219void tr_torrentRates( tr_handle_t * h, float * dl, float * ul )
220{
221    tr_torrent_t * tor;
222
223    *dl = 0.0;
224    *ul = 0.0;
225    for( tor = h->torrentList; tor; tor = tor->next )
226    {
227        tr_lockLock( &tor->lock );
228        if( tor->status & TR_STATUS_DOWNLOAD )
229            *dl += tr_rcRate( tor->download );
230        *ul += tr_rcRate( tor->upload );
231        tr_lockUnlock( &tor->lock );
232    }
233}
234
235tr_torrent_t * tr_torrentInit( tr_handle_t * h, const char * path,
236                               int flags, int * error )
237{
238    tr_torrent_t  * tor = calloc( sizeof( tr_torrent_t ), 1 );
239    int             saveCopy = ( TR_FSAVEPRIVATE & flags );
240
241    /* Parse torrent file */
242    if( tr_metainfoParse( &tor->info, path, NULL, saveCopy ) )
243    {
244        *error = TR_EINVALID;
245        free( tor );
246        return NULL;
247    }
248
249    return torrentRealInit( h, tor, flags, error );
250}
251
252tr_torrent_t * tr_torrentInitSaved( tr_handle_t * h, const char * hashStr,
253                                    int flags, int * error )
254{
255    tr_torrent_t  * tor = calloc( sizeof( tr_torrent_t ), 1 );
256
257    /* Parse torrent file */
258    if( tr_metainfoParse( &tor->info, NULL, hashStr, 0 ) )
259    {
260        *error = TR_EINVALID;
261        free( tor );
262        return NULL;
263    }
264
265    return torrentRealInit( h, tor, ( TR_FSAVEPRIVATE | flags ), error );
266}
267
268/***********************************************************************
269 * tr_torrentInit
270 ***********************************************************************
271 * Allocates a tr_torrent_t structure, then relies on tr_metainfoParse
272 * to fill it.
273 **********************************************************************/
274static tr_torrent_t * torrentRealInit( tr_handle_t * h, tr_torrent_t * tor,
275                                       int flags, int * error )
276{
277    tr_torrent_t  * tor_tmp;
278    tr_info_t     * inf;
279    int             i;
280    char          * s1, * s2;
281
282    inf        = &tor->info;
283    inf->flags = flags;
284
285    /* Make sure this torrent is not already open */
286    for( tor_tmp = h->torrentList; tor_tmp; tor_tmp = tor_tmp->next )
287    {
288        if( !memcmp( tor->info.hash, tor_tmp->info.hash,
289                     SHA_DIGEST_LENGTH ) )
290        {
291            *error = TR_EDUPLICATE;
292            free( inf->pieces );
293            free( inf->files );
294            free( tor );
295            return NULL;
296        }
297    }
298
299    tor->status = TR_STATUS_PAUSE;
300    tor->id     = h->id;
301    tor->key    = h->key;
302    tor->bindPort = &h->bindPort;
303        tor->finished = 0;
304
305
306    /* Guess scrape URL */
307    s1 = strchr( inf->trackerAnnounce, '/' );
308    while( ( s2 = strchr( s1 + 1, '/' ) ) )
309    {
310        s1 = s2;
311    }
312    s1++;
313    if( !strncmp( s1, "announce", 8 ) )
314    {
315        int pre  = (long) s1 - (long) inf->trackerAnnounce;
316        int post = strlen( inf->trackerAnnounce ) - pre - 8;
317        memcpy( tor->scrape, inf->trackerAnnounce, pre );
318        sprintf( &tor->scrape[pre], "scrape" );
319        memcpy( &tor->scrape[pre+6], &inf->trackerAnnounce[pre+8], post );
320    }
321
322    /* Escaped info hash for HTTP queries */
323    for( i = 0; i < SHA_DIGEST_LENGTH; i++ )
324    {
325        sprintf( &tor->hashString[3*i], "%%%02x", inf->hash[i] );
326    }
327
328    /* Block size: usually 16 ko, or less if we have to */
329    tor->blockSize  = MIN( inf->pieceSize, 1 << 14 );
330    tor->blockCount = ( inf->totalSize + tor->blockSize - 1 ) /
331                        tor->blockSize;
332    tor->completion = tr_cpInit( tor );
333
334    tr_lockInit( &tor->lock );
335
336    tor->globalUpload   = h->upload;
337    tor->globalDownload = h->download;
338    tor->fdlimit        = h->fdlimit;
339    tor->upload         = tr_rcInit();
340    tor->download       = tr_rcInit();
341    tor->swarmspeed     = tr_rcInit();
342 
343    /* We have a new torrent */
344    tr_lockLock( &h->acceptLock );
345    tor->prev = NULL;
346    tor->next = h->torrentList;
347    if( tor->next )
348    {
349        tor->next->prev = tor;
350    }
351    h->torrentList = tor;
352    (h->torrentCount)++;
353    tr_lockUnlock( &h->acceptLock );
354
355    if( 0 > h->bindPort )
356    {
357        tr_setBindPort( h, TR_DEFAULT_PORT );
358    }
359
360    return tor;
361}
362
363tr_info_t * tr_torrentInfo( tr_torrent_t * tor )
364{
365    return &tor->info;
366}
367
368/***********************************************************************
369 * tr_torrentScrape
370 **********************************************************************/
371int tr_torrentScrape( tr_torrent_t * tor, int * s, int * l )
372{
373    return tr_trackerScrape( tor, s, l );
374}
375
376void tr_torrentSetFolder( tr_torrent_t * tor, const char * path )
377{
378    tor->destination = strdup( path );
379    tr_ioLoadResume( tor );
380}
381
382char * tr_torrentGetFolder( tr_torrent_t * tor )
383{
384    return tor->destination;
385}
386
387void tr_torrentStart( tr_torrent_t * tor )
388{
389    if( tor->status & ( TR_STATUS_STOPPING | TR_STATUS_STOPPED ) )
390    {
391        /* Join the thread first */
392        torrentReallyStop( tor );
393    }
394
395    tor->downloadedPrev += tor->downloadedCur;
396    tor->downloadedCur   = 0;
397    tor->uploadedPrev   += tor->uploadedCur;
398    tor->uploadedCur     = 0;
399
400    tor->status  = TR_STATUS_CHECK;
401    tor->tracker = tr_trackerInit( tor );
402
403    tor->date = tr_date();
404    tor->die = 0;
405    tr_threadCreate( &tor->thread, downloadLoop, tor );
406}
407
408void tr_torrentStop( tr_torrent_t * tor )
409{
410    tr_lockLock( &tor->lock );
411    tr_trackerStopped( tor->tracker );
412    tr_rcReset( tor->download );
413    tr_rcReset( tor->upload );
414    tr_rcReset( tor->swarmspeed );
415    tor->status = TR_STATUS_STOPPING;
416    tor->stopDate = tr_date();
417    tr_lockUnlock( &tor->lock );
418}
419
420/***********************************************************************
421 * torrentReallyStop
422 ***********************************************************************
423 * Joins the download thread and frees/closes everything related to it.
424 **********************************************************************/
425static void torrentReallyStop( tr_torrent_t * tor )
426{
427    tor->die = 1;
428    tr_threadJoin( &tor->thread );
429    tr_dbg( "Thread joined" );
430
431    tr_trackerClose( tor->tracker );
432    tor->tracker = NULL;
433
434    while( tor->peerCount > 0 )
435    {
436        tr_peerRem( tor, 0 );
437    }
438}
439
440/***********************************************************************
441 * tr_torrentCount
442 ***********************************************************************
443 *
444 **********************************************************************/
445int tr_torrentCount( tr_handle_t * h )
446{
447    return h->torrentCount;
448}
449
450void tr_torrentIterate( tr_handle_t * h, tr_callback_t func, void * d )
451{
452    tr_torrent_t * tor, * next;
453
454    for( tor = h->torrentList; tor; tor = next )
455    {
456        next = tor->next;
457        func( tor, d );
458    }
459}
460
461int tr_getFinished( tr_torrent_t * tor )
462{
463    if( tor->finished )
464    {
465        tor->finished = 0;
466        return 1;
467    }
468    return 0;
469}
470
471tr_stat_t * tr_torrentStat( tr_torrent_t * tor )
472{
473    tr_stat_t * s;
474    tr_peer_t * peer;
475    tr_info_t * inf = &tor->info;
476    int i;
477
478    tor->statCur = ( tor->statCur + 1 ) % 2;
479    s = &tor->stats[tor->statCur];
480
481    if( ( tor->status & TR_STATUS_STOPPED ) ||
482        ( ( tor->status & TR_STATUS_STOPPING ) &&
483          tr_date() > tor->stopDate + 60000 ) )
484    {
485        torrentReallyStop( tor );
486        tor->status = TR_STATUS_PAUSE;
487    }
488
489    tr_lockLock( &tor->lock );
490
491    s->status = tor->status;
492    s->error  = tor->error;
493    memcpy( s->trackerError, tor->trackerError,
494            sizeof( s->trackerError ) );
495
496    s->peersTotal       = 0;
497    s->peersIncoming    = 0;
498    s->peersUploading   = 0;
499    s->peersDownloading = 0;
500   
501    for( i = 0; i < tor->peerCount; i++ )
502    {
503        peer = tor->peers[i];
504   
505        if( tr_peerIsConnected( peer ) )
506        {
507            (s->peersTotal)++;
508           
509            if( tr_peerIsIncoming( peer ) )
510            {
511                (s->peersIncoming)++;
512            }
513           
514            if( tr_peerIsUploading( peer ) )
515            {
516                (s->peersUploading)++;
517            }
518            if( tr_peerIsDownloading( peer ) )
519            {
520                (s->peersDownloading)++;
521            }
522        }
523    }
524
525    s->progress = tr_cpCompletionAsFloat( tor->completion );
526    if( tor->status & TR_STATUS_DOWNLOAD )
527    {
528        s->rateDownload = tr_rcRate( tor->download );
529    }
530    else
531    {
532        /* tr_rcRate() doesn't make the difference between 'piece'
533           messages and other messages, which causes a non-zero
534           download rate even tough we are not downloading. So we
535           force it to zero not to confuse the user. */
536        s->rateDownload = 0.0;
537    }
538    s->rateUpload = tr_rcRate( tor->upload );
539   
540    s->seeders  = tr_trackerSeeders(tor->tracker);
541    s->leechers = tr_trackerLeechers(tor->tracker);
542
543    s->swarmspeed = tr_rcRate( tor->swarmspeed );
544
545    if( s->rateDownload < 0.1 )
546    {
547        s->eta = -1;
548    }
549    else
550    {
551        s->eta = (float) ( 1.0 - s->progress ) *
552            (float) inf->totalSize / s->rateDownload / 1024.0;
553    }
554
555    s->downloaded = tor->downloadedCur + tor->downloadedPrev;
556    s->uploaded   = tor->uploadedCur   + tor->uploadedPrev;
557
558    tr_lockUnlock( &tor->lock );
559
560    return s;
561}
562
563tr_peer_stat_t * tr_torrentPeers( tr_torrent_t * tor, int * peerCount )
564{
565    tr_peer_stat_t * peers;
566
567    tr_lockLock( &tor->lock );
568
569    *peerCount = tor->peerCount;
570   
571    peers = (tr_peer_stat_t *) calloc( tor->peerCount, sizeof( tr_peer_stat_t ) );
572    if (peers != NULL)
573    {
574        tr_peer_t * peer;
575        struct in_addr * addr;
576        int i = 0;
577        for( i = 0; i < tor->peerCount; i++ )
578        {
579            peer = tor->peers[i];
580           
581            addr = tr_peerAddress( peer );
582            if( NULL != addr )
583            {
584                tr_netNtop( addr, peers[i].addr,
585                           sizeof( peers[i].addr ) );
586            }
587           
588            peers[i].client = tr_clientForId(tr_peerId(peer));
589           
590            peers[i].isConnected = tr_peerIsConnected(peer);
591            peers[i].isIncoming = tr_peerIsIncoming(peer);
592            peers[i].isDownloading = tr_peerIsDownloading(peer);
593            peers[i].isUploading = tr_peerIsUploading(peer);
594            peers[i].progress = tr_peerProgress(peer);
595        }
596    }
597   
598    tr_lockUnlock( &tor->lock );
599   
600    return peers;
601}
602
603void tr_torrentPeersFree( tr_peer_stat_t * peers, int peerCount )
604{
605    int i;
606
607    if (peers == NULL)
608        return;
609
610    for (i = 0; i < peerCount; i++)
611        free( peers[i].client );
612
613    free( peers );
614}
615
616void tr_torrentAvailability( tr_torrent_t * tor, int8_t * tab, int size )
617{
618    int i, j, piece;
619
620    tr_lockLock( &tor->lock );
621    for( i = 0; i < size; i++ )
622    {
623        piece = i * tor->info.pieceCount / size;
624
625        if( tr_cpPieceIsComplete( tor->completion, piece ) )
626        {
627            tab[i] = -1;
628            continue;
629        }
630
631        tab[i] = 0;
632        for( j = 0; j < tor->peerCount; j++ )
633        {
634            if( tr_peerBitfield( tor->peers[j] ) &&
635                tr_bitfieldHas( tr_peerBitfield( tor->peers[j] ), piece ) )
636            {
637                (tab[i])++;
638            }
639        }
640    }
641    tr_lockUnlock( &tor->lock );
642}
643
644void tr_torrentAmountFinished( tr_torrent_t * tor, float * tab, int size )
645{
646    int i, piece;
647
648    tr_lockLock( &tor->lock );
649    for( i = 0; i < size; i++ )
650    {
651        piece = i * tor->info.pieceCount / size;
652        tab[i] = tr_cpPercentBlocksInPiece( tor->completion, piece );
653    }
654    tr_lockUnlock( &tor->lock );
655}
656
657void tr_torrentRemoveSaved( tr_torrent_t * tor ) {
658    tr_metainfoRemoveSaved( tor->info.hashString );
659}
660
661/***********************************************************************
662 * tr_torrentClose
663 ***********************************************************************
664 * Frees memory allocated by tr_torrentInit.
665 **********************************************************************/
666void tr_torrentClose( tr_handle_t * h, tr_torrent_t * tor )
667{
668    tr_info_t * inf = &tor->info;
669
670    if( tor->status & ( TR_STATUS_STOPPING | TR_STATUS_STOPPED ) )
671    {
672        /* Join the thread first */
673        torrentReallyStop( tor );
674    }
675
676    tr_lockLock( &h->acceptLock );
677
678    h->torrentCount--;
679
680    tr_lockClose( &tor->lock );
681    tr_cpClose( tor->completion );
682
683    tr_rcClose( tor->upload );
684    tr_rcClose( tor->download );
685    tr_rcClose( tor->swarmspeed );
686
687    if( tor->destination )
688    {
689        free( tor->destination );
690    }
691    free( inf->pieces );
692    free( inf->files );
693
694    if( tor->prev )
695    {
696        tor->prev->next = tor->next;
697    }
698    else
699    {
700        h->torrentList = tor->next;
701    }
702    if( tor->next )
703    {
704        tor->next->prev = tor->prev;
705    }
706    free( tor );
707
708    tr_lockUnlock( &h->acceptLock );
709}
710
711void tr_close( tr_handle_t * h )
712{
713    acceptStop( h );
714    tr_natpmpClose( h->natpmp );
715    tr_upnpClose( h->upnp );
716    tr_chokingClose( h->choking );
717    tr_fdClose( h->fdlimit );
718    tr_rcClose( h->upload );
719    tr_rcClose( h->download );
720    free( h );
721
722    tr_netResolveThreadClose();
723}
724
725/***********************************************************************
726 * downloadLoop
727 **********************************************************************/
728static void downloadLoop( void * _tor )
729{
730    tr_torrent_t * tor = _tor;
731    uint64_t       date1, date2;
732
733    tr_dbg( "Thread started" );
734
735#ifdef SYS_BEOS
736    /* This is required because on BeOS, SIGINT is sent to each thread,
737       which kills them not nicely */
738    signal( SIGINT, SIG_IGN );
739#endif
740
741    tr_lockLock( &tor->lock );
742
743    tr_cpReset( tor->completion );
744    tor->io     = tr_ioInit( tor );
745    tor->status = tr_cpIsSeeding( tor->completion ) ?
746                      TR_STATUS_SEED : TR_STATUS_DOWNLOAD;
747
748    while( !tor->die )
749    {
750        date1 = tr_date();
751
752        /* Are we finished ? */
753        if( ( tor->status & TR_STATUS_DOWNLOAD ) &&
754            tr_cpIsSeeding( tor->completion ) )
755        {
756            /* Done */
757            tor->status = TR_STATUS_SEED;
758                        tor->finished = 1;
759            tr_trackerCompleted( tor->tracker );
760            tr_ioSaveResume( tor->io );
761#ifndef __AMIGAOS4__
762            sync(); /* KLUDGE: all files should be closed and
763                       re-opened in read-only mode instead */
764#endif
765        }
766
767        /* Receive/send messages */
768        tr_peerPulse( tor );
769
770        /* Try to get new peers or to send a message to the tracker */
771        tr_trackerPulse( tor->tracker );
772
773        if( tor->status & TR_STATUS_STOPPED )
774        {
775            break;
776        }
777
778        /* Wait up to 20 ms */
779        date2 = tr_date();
780        if( date2 < date1 + 20 )
781        {
782            tr_lockUnlock( &tor->lock );
783            tr_wait( date1 + 20 - date2 );
784            tr_lockLock( &tor->lock );
785        }
786    }
787
788    tr_lockUnlock( &tor->lock );
789
790    tr_ioClose( tor->io );
791
792    tor->status = TR_STATUS_STOPPED;
793
794    tr_dbg( "Thread exited" );
795}
796
797/***********************************************************************
798 * acceptLoop
799 **********************************************************************/
800static void acceptLoop( void * _h )
801{
802    tr_handle_t * h = _h;
803    uint64_t      date1, date2, lastchoke = 0;
804    int           ii;
805    uint8_t     * hash;
806    tr_torrent_t * tor;
807
808    tr_dbg( "Accept thread started" );
809
810#ifdef SYS_BEOS
811    /* This is required because on BeOS, SIGINT is sent to each thread,
812       which kills them not nicely */
813    signal( SIGINT, SIG_IGN );
814#endif
815
816    tr_lockLock( &h->acceptLock );
817
818    while( !h->acceptDie )
819    {
820        date1 = tr_date();
821
822        /* do NAT-PMP and UPnP pulses here since there's nowhere better */
823        tr_natpmpPulse( h->natpmp );
824        tr_upnpPulse( h->upnp );
825
826        /* Check for incoming connections */
827        if( h->bindSocket > -1 &&
828            h->acceptPeerCount < TR_MAX_PEER_COUNT &&
829            !tr_fdSocketWillCreate( h->fdlimit, 0 ) )
830        {
831            int            s;
832            struct in_addr addr;
833            in_port_t      port;
834            s = tr_netAccept( h->bindSocket, &addr, &port );
835            if( s > -1 )
836            {
837                h->acceptPeers[h->acceptPeerCount++] = tr_peerInit( addr, port, s );
838            }
839            else
840            {
841                tr_fdSocketClosed( h->fdlimit, 0 );
842            }
843        }
844
845        for( ii = 0; ii < h->acceptPeerCount; )
846        {
847            if( tr_peerRead( NULL, h->acceptPeers[ii] ) )
848            {
849                tr_peerDestroy( h->fdlimit, h->acceptPeers[ii] );
850                goto removePeer;
851            }
852            if( NULL != ( hash = tr_peerHash( h->acceptPeers[ii] ) ) )
853            {
854                for( tor = h->torrentList; tor; tor = tor->next )
855                {
856                    tr_lockLock( &tor->lock );
857                    if( tor->status & TR_STATUS_INACTIVE )
858                    {
859                        tr_lockUnlock( &tor->lock );
860                        continue;
861                    }
862
863                    if( 0 == memcmp( tor->info.hash, hash,
864                                     SHA_DIGEST_LENGTH ) )
865                    {
866                      tr_peerAttach( tor, h->acceptPeers[ii] );
867                      tr_lockUnlock( &tor->lock );
868                      goto removePeer;
869                    }
870                    tr_lockUnlock( &tor->lock );
871                }
872                tr_peerDestroy( h->fdlimit, h->acceptPeers[ii] );
873                goto removePeer;
874            }
875            if( date1 > tr_peerDate( h->acceptPeers[ii] ) + 10000 )
876            {
877                /* Give them 10 seconds to send the handshake */
878                tr_peerDestroy( h->fdlimit, h->acceptPeers[ii] );
879                goto removePeer;
880            }
881            ii++;
882            continue;
883           removePeer:
884            h->acceptPeerCount--;
885            memmove( &h->acceptPeers[ii], &h->acceptPeers[ii+1],
886                     ( h->acceptPeerCount - ii ) * sizeof( tr_peer_t * ) );
887        }
888
889        if( date1 > lastchoke + 2000 )
890        {
891            tr_chokingPulse( h->choking );
892            lastchoke = date1;
893        }
894
895        /* Wait up to 20 ms */
896        date2 = tr_date();
897        if( date2 < date1 + 20 )
898        {
899            tr_lockUnlock( &h->acceptLock );
900            tr_wait( date1 + 20 - date2 );
901            tr_lockLock( &h->acceptLock );
902        }
903    }
904
905    tr_lockUnlock( &h->acceptLock );
906
907    tr_dbg( "Accept thread exited" );
908}
909
910/***********************************************************************
911 * acceptStop
912 ***********************************************************************
913 * Joins the accept thread and frees/closes everything related to it.
914 **********************************************************************/
915static void acceptStop( tr_handle_t * h )
916{
917    int ii;
918
919    h->acceptDie = 1;
920    tr_threadJoin( &h->acceptThread );
921    tr_lockClose( &h->acceptLock );
922    tr_dbg( "Accept thread joined" );
923
924    for( ii = 0; ii < h->acceptPeerCount; ii++ )
925    {
926        tr_peerDestroy( h->fdlimit, h->acceptPeers[ii] );
927    }
928
929    if( h->bindSocket > -1 )
930    {
931        tr_netClose( h->bindSocket );
932        tr_fdSocketClosed( h->fdlimit, 0 );
933    }
934}
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