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torrent.c
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torrent.c
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/*
* This file Copyright (C) 2009-2014 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
* $Id$
*/
#include <signal.h> /* signal () */
#include <sys/types.h> /* stat */
#include <sys/stat.h> /* stat */
#ifndef WIN32
#include <sys/wait.h> /* wait () */
#else
#include <process.h>
#endif
#include <unistd.h> /* stat */
#include <dirent.h>
#include <assert.h>
#include <math.h>
#include <stdarg.h>
#include <string.h> /* memcmp */
#include <stdlib.h> /* qsort */
#include <limits.h> /* INT_MAX */
#include <event2/util.h> /* evutil_vsnprintf () */
#include "transmission.h"
#include "announcer.h"
#include "bandwidth.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 "log.h"
#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 "variant.h"
#include "verify.h"
#include "version.h"
/***
****
***/
#define tr_deeplog_tor(tor, ...) \
do \
{ \
if (tr_logGetDeepEnabled ()) \
tr_logAddDeep (__FILE__, __LINE__, tr_torrentName (tor), __VA_ARGS__); \
} \
while (0)
/***
****
***/
const char *
tr_torrentName (const tr_torrent * tor)
{
return tor ? tor->info.name : "";
}
int
tr_torrentId (const tr_torrent * tor)
{
return tor ? tor->uniqueId : -1;
}
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)
{
bool allowed = true;
unsigned int limit;
assert (tr_isTorrent (tor));
assert (tr_isDirection (direction));
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;
}
/***
****
***/
static void
tr_torrentUnsetPeerId (tr_torrent * tor)
{
/* triggers a rebuild next time tr_torrentGetPeerId() is called */
*tor->peer_id = '\0';
}
static int
peerIdTTL (const tr_torrent * tor)
{
int ttl;
if (!tor->peer_id_creation_time)
ttl = 0;
else
ttl = (int)difftime(tor->peer_id_creation_time+(tor->session->peer_id_ttl_hours*3600), tr_time());
return ttl;
}
const unsigned char *
tr_torrentGetPeerId (tr_torrent * tor)
{
bool needs_new_peer_id = false;
if (!*tor->peer_id)
needs_new_peer_id = true;
if (!needs_new_peer_id)
if (!tr_torrentIsPrivate (tor))
if (peerIdTTL (tor) <= 0)
needs_new_peer_id = true;
if (needs_new_peer_id)
{
tr_peerIdInit (tor->peer_id);
tor->peer_id_creation_time = tr_time ();
}
return tor->peer_id;
}
/***
**** PER-TORRENT UL / DL SPEEDS
***/
void
tr_torrentSetSpeedLimit_Bps (tr_torrent * tor, tr_direction dir, unsigned int Bps)
{
assert (tr_isTorrent (tor));
assert (tr_isDirection (dir));
if (tr_bandwidthSetDesiredSpeed_Bps (&tor->bandwidth, dir, Bps))
tr_torrentSetDirty (tor);
}
void
tr_torrentSetSpeedLimit_KBps (tr_torrent * tor, tr_direction dir, unsigned int KBps)
{
tr_torrentSetSpeedLimit_Bps (tor, dir, toSpeedBytes (KBps));
}
unsigned 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);
}
unsigned int
tr_torrentGetSpeedLimit_KBps (const tr_torrent * tor, tr_direction dir)
{
assert (tr_isTorrent (tor));
assert (tr_isDirection (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));
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;
assert (tr_isTorrent (tor));
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 (const tr_torrent * tor,
uint64_t * setmeLeft,
uint64_t * setmeGoal)
{
double seedRatio;
bool seedRatioApplies = false;
assert (tr_isTorrent (tor));
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 (const 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 != NULL)
*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 || tor->isStopping || !tr_torrentIsSeed (tor))
return;
/* if we're seeding and reach our seed ratio limit, stop the torrent */
if (tr_torrentIsSeedRatioDone (tor))
{
tr_logAddTorInfo (tor, "%s", "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_logAddTorInfo (tor, "%s", "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_logAddTorErr (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_logAddTorDbg (tor, "Got %"TR_PRIuSIZE" seeds from tracker", event->pexCount);
else
tr_logAddTorDbg (tor, "Got %"TR_PRIuSIZE" peers from tracker", event->pexCount);
for (i = 0; i < event->pexCount; ++i)
tr_peerMgrAddPex (tor, TR_PEER_FROM_TRACKER, &event->pex[i], seedProbability);
break;
}
case TR_TRACKER_WARNING:
tr_logAddTorErr (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_logAddTorErr (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)
{
tr_piece_index_t piece;
assert (info);
assert (info->pieceSize != 0);
piece = byteOffset / info->pieceSize;
/* handle 0-byte files at the end of a torrent */
if (byteOffset == info->totalSize)
piece = info->pieceCount - 1;
return piece;
}
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; f<inf->fileCount; ++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; p<inf->pieceCount; ++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; p<inf->pieceCount; ++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; f<inf->fileCount; ++f)
if (pieceHasFile (p, &inf->files[f]))
break;
assert ((int)f == firstFiles[p]);
}
#endif
for (p=0; p<inf->pieceCount; ++p)
inf->pieces[p].priority = calculatePiecePriority (tor, p, firstFiles[p]);
tr_free (firstFiles);
}
static void torrentStart (tr_torrent * tor, bool bypass_queue);
/**
* 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; i<tor->info.fileCount; ++i)
if (tr_torrentFindFile2 (tor, i, NULL, NULL, NULL))
return true;
return false;
}
static bool
setLocalErrorIfFilesDisappeared (tr_torrent * tor)
{
const bool disappeared = (tr_torrentHaveTotal (tor) > 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)
{
bool doStart;
uint64_t loaded;
const char * dir;
bool isNewTorrent;
struct stat st;
tr_session * session = tr_ctorGetSession (ctor);
static int nextUniqueId = 1;
assert (session != NULL);
tr_sessionLock (session);
tor->session = session;
tor->uniqueId = nextUniqueId++;
tor->magicNumber = TORRENT_MAGIC_NUMBER;
tor->queuePosition = session->torrentCount;
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 = false;
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_variant * val;
if (!tr_ctorGetMetainfo (ctor, &val))
{
const char * path = tor->info.torrent;
const int err = tr_variantToFile (val, TR_VARIANT_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, NULL, NULL);
}
else if (doStart)
{
tr_torrentStart (tor);
}
tr_sessionUnlock (session);
}
static tr_parse_result
torrentParseImpl (const tr_ctor * ctor,
tr_info * setmeInfo,
bool * setmeHasInfo,
int * dictLength,
int * setme_duplicate_id)
{
bool doFree;
bool didParse;
bool hasInfo = false;
tr_info tmp;
const tr_variant * 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;