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transmission/libtransmission/torrent.c

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/*
* This file Copyright (C) 2009-2017 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#include <errno.h> /* EINVAL */
#include <signal.h> /* signal() */
#ifndef _WIN32
#include <sys/wait.h> /* wait() */
#include <unistd.h> /* fork(), execvp(), _exit() */
#else
#include <windows.h> /* CreateProcess(), GetLastError() */
#endif
#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-utils.h" /* for tr_sha1 */
#include "error.h"
#include "fdlimit.h" /* tr_fdTorrentClose */
#include "file.h"
#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 "resume.h"
#include "session.h"
#include "subprocess.h"
#include "torrent.h"
#include "torrent-magnet.h"
#include "tr-assert.h"
#include "trevent.h" /* tr_runInEventThread() */
#include "utils.h"
#include "variant.h"
#include "verify.h"
#include "version.h"
/***
****
***/
#define tr_deeplog_tor(tor, ...) tr_logAddDeepNamed(tr_torrentName(tor), __VA_ARGS__)
/***
****
***/
char const* tr_torrentName(tr_torrent const* tor)
{
return tor != NULL ? tor->info.name : "";
}
int tr_torrentId(tr_torrent const* tor)
{
return tor != NULL ? tor->uniqueId : -1;
}
tr_torrent* tr_torrentFindFromId(tr_session* session, int id)
{
tr_torrent* tor = NULL;
while ((tor = tr_torrentNext(session, tor)) != NULL)
{
if (tor->uniqueId == id)
{
return tor;
}
}
return NULL;
}
tr_torrent* tr_torrentFindFromHashString(tr_session* session, char const* str)
{
tr_torrent* tor = NULL;
while ((tor = tr_torrentNext(session, tor)) != NULL)
{
if (evutil_ascii_strcasecmp(str, tor->info.hashString) == 0)
{
return tor;
}
}
return NULL;
}
tr_torrent* tr_torrentFindFromHash(tr_session* session, uint8_t const* torrentHash)
{
tr_torrent* tor = NULL;
while ((tor = tr_torrentNext(session, tor)) != NULL)
{
if ((*tor->info.hash == *torrentHash) && (memcmp(tor->info.hash, torrentHash, SHA_DIGEST_LENGTH) == 0))
{
return tor;
}
}
return NULL;
}
tr_torrent* tr_torrentFindFromMagnetLink(tr_session* session, char const* magnet)
{
tr_magnet_info* info;
tr_torrent* tor = NULL;
if ((info = tr_magnetParse(magnet)) != NULL)
{
tor = tr_torrentFindFromHash(session, info->hash);
tr_magnetFree(info);
}
return tor;
}
tr_torrent* tr_torrentFindFromObfuscatedHash(tr_session* session, uint8_t const* obfuscatedTorrentHash)
{
tr_torrent* tor = NULL;
while ((tor = tr_torrentNext(session, tor)) != NULL)
{
if (memcmp(tor->obfuscatedHash, obfuscatedTorrentHash, SHA_DIGEST_LENGTH) == 0)
{
return tor;
}
}
return NULL;
}
bool tr_torrentIsPieceTransferAllowed(tr_torrent const* tor, tr_direction direction)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(tr_isDirection(direction));
bool allowed = true;
if (tr_torrentUsesSpeedLimit(tor, direction) && tr_torrentGetSpeedLimit_Bps(tor, direction) <= 0)
{
allowed = false;
}
if (tr_torrentUsesSessionLimits(tor))
{
unsigned int limit = 0;
if (tr_sessionGetActiveSpeedLimit_Bps(tor->session, direction, &limit) && (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(tr_torrent const* tor)
{
int ttl;
if (tor->peer_id_creation_time == 0)
{
ttl = 0;
}
else
{
ttl = (int)difftime(tor->peer_id_creation_time + tor->session->peer_id_ttl_hours * 3600, tr_time());
}
return ttl;
}
unsigned char const* tr_torrentGetPeerId(tr_torrent* tor)
{
bool const needs_new_peer_id = (*tor->peer_id == '\0') || // doesn't have one
(!tr_torrentIsPrivate(tor) && (peerIdTTL(tor) <= 0)); // has one but it's expired
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)
{
TR_ASSERT(tr_isTorrent(tor));
TR_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(tr_torrent const* tor, tr_direction dir)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(tr_isDirection(dir));
return tr_bandwidthGetDesiredSpeed_Bps(&tor->bandwidth, dir);
}
unsigned int tr_torrentGetSpeedLimit_KBps(tr_torrent const* tor, tr_direction dir)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(tr_isDirection(dir));
return toSpeedKBps(tr_torrentGetSpeedLimit_Bps(tor, dir));
}
void tr_torrentUseSpeedLimit(tr_torrent* tor, tr_direction dir, bool do_use)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(tr_isDirection(dir));
if (tr_bandwidthSetLimited(&tor->bandwidth, dir, do_use))
{
tr_torrentSetDirty(tor);
}
}
bool tr_torrentUsesSpeedLimit(tr_torrent const* tor, tr_direction dir)
{
TR_ASSERT(tr_isTorrent(tor));
return tr_bandwidthIsLimited(&tor->bandwidth, dir);
}
void tr_torrentUseSessionLimits(tr_torrent* tor, bool doUse)
{
TR_ASSERT(tr_isTorrent(tor));
bool changed;
changed = tr_bandwidthHonorParentLimits(&tor->bandwidth, TR_UP, doUse);
changed |= tr_bandwidthHonorParentLimits(&tor->bandwidth, TR_DOWN, doUse);
if (changed)
{
tr_torrentSetDirty(tor);
}
}
bool tr_torrentUsesSessionLimits(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tr_bandwidthAreParentLimitsHonored(&tor->bandwidth, TR_UP);
}
/***
****
***/
void tr_torrentSetRatioMode(tr_torrent* tor, tr_ratiolimit mode)
{
TR_ASSERT(tr_isTorrent(tor));
TR_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(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tor->ratioLimitMode;
}
void tr_torrentSetRatioLimit(tr_torrent* tor, double desiredRatio)
{
TR_ASSERT(tr_isTorrent(tor));
if ((int)(desiredRatio * 100.0) != (int)(tor->desiredRatio * 100.0))
{
tor->desiredRatio = desiredRatio;
tr_torrentSetDirty(tor);
}
}
double tr_torrentGetRatioLimit(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tor->desiredRatio;
}
bool tr_torrentGetSeedRatio(tr_torrent const* tor, double* ratio)
{
TR_ASSERT(tr_isTorrent(tor));
bool isLimited;
switch (tr_torrentGetRatioMode(tor))
{
case TR_RATIOLIMIT_SINGLE:
isLimited = true;
if (ratio != NULL)
{
*ratio = tr_torrentGetRatioLimit(tor);
}
break;
case TR_RATIOLIMIT_GLOBAL:
isLimited = tr_sessionIsRatioLimited(tor->session);
if (isLimited && ratio != NULL)
{
*ratio = tr_sessionGetRatioLimit(tor->session);
}
break;
default: /* TR_RATIOLIMIT_UNLIMITED */
isLimited = false;
break;
}
return isLimited;
}
/* returns true if the seed ratio applies --
* it applies if the torrent's a seed AND it has a seed ratio set */
static bool tr_torrentGetSeedRatioBytes(tr_torrent const* tor, uint64_t* setmeLeft, uint64_t* setmeGoal)
{
TR_ASSERT(tr_isTorrent(tor));
double seedRatio;
bool seedRatioApplies = false;
if (tr_torrentGetSeedRatio(tor, &seedRatio))
{
uint64_t const u = tor->uploadedCur + tor->uploadedPrev;
uint64_t const d = tor->downloadedCur + tor->downloadedPrev;
uint64_t const baseline = d != 0 ? d : tr_cpSizeWhenDone(&tor->completion);
uint64_t const goal = baseline * seedRatio;
if (setmeLeft != NULL)
{
*setmeLeft = goal > u ? goal - u : 0;
}
if (setmeGoal != NULL)
{
*setmeGoal = goal;
}
seedRatioApplies = tr_torrentIsSeed(tor);
}
return seedRatioApplies;
}
static bool tr_torrentIsSeedRatioDone(tr_torrent const* tor)
{
uint64_t bytesLeft;
return tr_torrentGetSeedRatioBytes(tor, &bytesLeft, NULL) && bytesLeft == 0;
}
/***
****
***/
void tr_torrentSetIdleMode(tr_torrent* tor, tr_idlelimit mode)
{
TR_ASSERT(tr_isTorrent(tor));
TR_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(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tor->idleLimitMode;
}
void tr_torrentSetIdleLimit(tr_torrent* tor, uint16_t idleMinutes)
{
TR_ASSERT(tr_isTorrent(tor));
if (idleMinutes > 0)
{
tor->idleLimitMinutes = idleMinutes;
tr_torrentSetDirty(tor);
}
}
uint16_t tr_torrentGetIdleLimit(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tor->idleLimitMinutes;
}
bool tr_torrentGetSeedIdle(tr_torrent const* 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 != NULL)
{
*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)
{
TR_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, char const* fmt, ...)
{
TR_ASSERT(tr_isTorrent(tor));
va_list ap;
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, tr_tracker_event const* event, void* user_data)
{
TR_UNUSED(user_data);
switch (event->messageType)
{
case TR_TRACKER_PEERS:
{
int8_t const seedProbability = event->seedProbability;
bool const allAreSeeds = seedProbability == 100;
if (allAreSeeds)
{
tr_logAddTorDbg(tor, "Got %zu seeds from tracker", event->pexCount);
}
else
{
tr_logAddTorDbg(tor, "Got %zu peers from tracker", event->pexCount);
}
for (size_t 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(tr_info const* info, uint64_t byteOffset)
{
TR_ASSERT(info != NULL);
TR_ASSERT(info->pieceSize != 0);
tr_piece_index_t 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_ASSERT(info != NULL);
TR_ASSERT(fileIndex < info->fileCount);
tr_file* file = &info->files[fileIndex];
uint64_t firstByte = file->offset;
uint64_t lastByte = firstByte + (file->length != 0 ? file->length - 1 : 0);
file->firstPiece = getBytePiece(info, firstByte);
file->lastPiece = getBytePiece(info, lastByte);
}
static bool pieceHasFile(tr_piece_index_t piece, tr_file const* file)
{
return file->firstPiece <= piece && piece <= file->lastPiece;
}
static tr_priority_t calculatePiecePriority(tr_torrent const* tor, tr_piece_index_t piece, tr_file_index_t file_hint)
{
// safeguard against a bad arg
tr_info const* const inf = tr_torrentInfo(tor);
file_hint = MIN(file_hint, inf->fileCount - 1);
// find the first file with data in this piece
tr_file_index_t first = file_hint;
while (first > 0 && pieceHasFile(piece, &inf->files[first - 1]))
{
--first;
}
// the priority is the max of all the file priorities in the piece
tr_priority_t priority = TR_PRI_LOW;
for (tr_file_index_t i = first; i < inf->fileCount; ++i)
{
tr_file const* file = &inf->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) && (file->firstPiece == piece || file->lastPiece == piece))
{
priority = TR_PRI_HIGH;
}
}
return priority;
}
static void tr_torrentInitFilePieces(tr_torrent* tor)
{
uint64_t offset = 0;
tr_info* inf = &tor->info;
/* assign the file offsets */
for (tr_file_index_t 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 */
tr_file_index_t* firstFiles = tr_new(tr_file_index_t, inf->pieceCount);
tr_file_index_t f = 0;
for (tr_piece_index_t p = 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 (tr_piece_index_t p = 0; p < inf->pieceCount; ++p)
{
tr_file_index_t f = firstFiles[p];
TR_ASSERT(inf->files[f].firstPiece <= p);
TR_ASSERT(inf->files[f].lastPiece >= p);
if (f > 0)
{
TR_ASSERT(inf->files[f - 1].lastPiece < p);
}
f = 0;
for (tr_file_index_t i = 0; i < inf->fileCount; ++i, ++f)
{
if (pieceHasFile(p, &inf->files[i]))
{
break;
}
}
TR_ASSERT((int)f == firstFiles[p]);
}
#endif
for (tr_piece_index_t 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 == 0 || pieceSize % b != 0) /* not cleanly divisible */
{
return 0;
}
return b;
}
static void refreshCurrentDir(tr_torrent* tor);
static void torrentInitFromInfo(tr_torrent* tor)
{
uint64_t t;
tr_info const* const info = &tor->info;
tor->blockSize = tr_getBlockSize(info->pieceSize);
if (info->pieceSize != 0)
{
tor->lastPieceSize = (uint32_t)(info->totalSize % info->pieceSize);
}
if (tor->lastPieceSize == 0)
{
tor->lastPieceSize = info->pieceSize;
}
if (tor->blockSize != 0)
{
tor->lastBlockSize = info->totalSize % tor->blockSize;
}
if (tor->lastBlockSize == 0)
{
tor->lastBlockSize = tor->blockSize;
}
tor->blockCount = tor->blockSize != 0 ? (info->totalSize + tor->blockSize - 1) / tor->blockSize : 0;
tor->blockCountInPiece = tor->blockSize != 0 ? info->pieceSize / tor->blockSize : 0;
tor->blockCountInLastPiece = tor->blockSize != 0 ? (tor->lastPieceSize + tor->blockSize - 1) / tor->blockSize : 0;
/* check our work */
if (tor->blockSize != 0)
{
TR_ASSERT(info->pieceSize % tor->blockSize == 0);
}
t = info->pieceCount - 1;
t *= info->pieceSize;
t += tor->lastPieceSize;
TR_ASSERT(t == info->totalSize);
t = tor->blockCount - 1;
t *= tor->blockSize;
t += tor->lastBlockSize;
TR_ASSERT(t == info->totalSize);
t = info->pieceCount - 1;
t *= tor->blockCountInPiece;
t += tor->blockCountInLastPiece;
TR_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(tr_torrent const* tor)
{
for (tr_file_index_t 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)
{
bool const 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, tr_ctor const* ctor)
{
tr_session* session = tr_ctorGetSession(ctor);
TR_ASSERT(session != NULL);
tr_sessionLock(session);
bool doStart;
uint64_t loaded;
char const* dir;
bool isNewTorrent;
static int nextUniqueId = 1;
tor->session = session;
tor->uniqueId = nextUniqueId++;
tor->magicNumber = TORRENT_MAGIC_NUMBER;
tor->queuePosition = session->torrentCount;
tor->labels = TR_PTR_ARRAY_INIT;
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);
TR_ASSERT(tor->downloadedCur == 0);
TR_ASSERT(tor->uploadedCur == 0);
tr_torrentSetDateAdded(tor, tr_time()); /* this is a default value to be overwritten by the resume file */
torrentInitFromInfo(tor);
bool didRenameResumeFileToHashOnlyName = false;
loaded = tr_torrentLoadResume(tor, ~(uint64_t)0, ctor, &didRenameResumeFileToHashOnlyName);
if (didRenameResumeFileToHashOnlyName)
{
/* Rename torrent file as well */
tr_metainfoMigrateFile(session, &tor->info, TR_METAINFO_BASENAME_NAME_AND_PARTIAL_HASH, TR_METAINFO_BASENAME_HASH);
}
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) == 0)
{
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) == 0)
{
tr_torrentSetRatioMode(tor, TR_RATIOLIMIT_GLOBAL);
tr_torrentSetRatioLimit(tor, tr_sessionGetRatioLimit(tor->session));
}
if ((loaded & TR_FR_IDLELIMIT) == 0)
{
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 = !tr_sys_path_exists(tor->info.torrent, NULL);
/* maybe save our own copy of the metainfo */
if (tr_ctorGetSave(ctor))
{
tr_variant const* val;
if (tr_ctorGetMetainfo(ctor, &val))
{
char const* path = tor->info.torrent;
int const err = tr_variantToFile(val, TR_VARIANT_FMT_BENC, path);
if (err != 0)
{
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(
tr_ctor const* ctor,
tr_info* setmeInfo,
bool* setmeHasInfo,
size_t* dictLength,
int* setme_duplicate_id)
{
bool doFree;
bool didParse;
bool hasInfo = false;
tr_info tmp;
tr_variant const* metainfo;
tr_session* session = tr_ctorGetSession(ctor);
tr_parse_result result = TR_PARSE_OK;
if (setmeInfo == NULL)
{
setmeInfo = &tmp;
}
memset(setmeInfo, 0, sizeof(tr_info));
if (!tr_ctorGetMetainfo(ctor, &metainfo))
{
return TR_PARSE_ERR;
}
didParse = tr_metainfoParse(session, metainfo, setmeInfo, &hasInfo, dictLength);
doFree = didParse && (setmeInfo == &tmp);
if (!didParse)
{
result = TR_PARSE_ERR;
}
if (didParse && hasInfo && tr_getBlockSize(setmeInfo->pieceSize) == 0)
{
result = TR_PARSE_ERR;
}
if (didParse && session != NULL && result == TR_PARSE_OK)
{
tr_torrent const* const tor = tr_torrentFindFromHash(session, setmeInfo->hash);
if (tor != NULL)
{
result = TR_PARSE_DUPLICATE;
if (setme_duplicate_id != NULL)
{
*setme_duplicate_id = tr_torrentId(tor);
}
}
}
if (doFree)
{
tr_metainfoFree(setmeInfo);
}
if (setmeHasInfo != NULL)
{
*setmeHasInfo = hasInfo;
}
return result;
}
tr_parse_result tr_torrentParse(tr_ctor const* ctor, tr_info* setmeInfo)
{
return torrentParseImpl(ctor, setmeInfo, NULL, NULL, NULL);
}
tr_torrent* tr_torrentNew(tr_ctor const* ctor, int* setme_error, int* setme_duplicate_id)
{
TR_ASSERT(ctor != NULL);
TR_ASSERT(tr_isSession(tr_ctorGetSession(ctor)));
size_t len;
bool hasInfo;
tr_info tmpInfo;
tr_parse_result r;
tr_torrent* tor = NULL;
r = torrentParseImpl(ctor, &tmpInfo, &hasInfo, &len, setme_duplicate_id);
if (r == TR_PARSE_OK)
{
tor = tr_new0(tr_torrent, 1);
tor->info = tmpInfo;
if (hasInfo)
{
tor->infoDictLength = len;
}
torrentInit(tor, ctor);
}
else
{
if (r == TR_PARSE_DUPLICATE)
{
tr_metainfoFree(&tmpInfo);
}
if (setme_error != NULL)
{
*setme_error = r;
}
}
return tor;
}
/**
***
**/
void tr_torrentSetDownloadDir(tr_torrent* tor, char const* path)
{
TR_ASSERT(tr_isTorrent(tor));
if (path == NULL || tor->downloadDir == NULL || strcmp(path, tor->downloadDir) != 0)
{
tr_free(tor->downloadDir);
tor->downloadDir = tr_strdup(path);
tr_torrentMarkEdited(tor);
tr_torrentSetDirty(tor);
}
refreshCurrentDir(tor);
}
char const* tr_torrentGetDownloadDir(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tor->downloadDir;
}
char const* tr_torrentGetCurrentDir(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tor->currentDir;
}
void tr_torrentChangeMyPort(tr_torrent* tor)
{
TR_ASSERT(tr_isTorrent(tor));
if (tor->isRunning)
{
tr_announcerChangeMyPort(tor);
}
}
static inline void tr_torrentManualUpdateImpl(void* vtor)
{
tr_torrent* tor = vtor;
TR_ASSERT(tr_isTorrent(tor));
if (tor->isRunning)
{
tr_announcerManualAnnounce(tor);
}
}
void tr_torrentManualUpdate(tr_torrent* tor)
{
TR_ASSERT(tr_isTorrent(tor));
tr_runInEventThread(tor->session, tr_torrentManualUpdateImpl, tor);
}
bool tr_torrentCanManualUpdate(tr_torrent const* tor)
{
return tr_isTorrent(tor) && tor->isRunning && tr_announcerCanManualAnnounce(tor);
}
tr_info const* tr_torrentInfo(tr_torrent const* tor)
{
return tr_isTorrent(tor) ? &tor->info : NULL;
}
tr_stat const* tr_torrentStatCached(tr_torrent* tor)
{
time_t const now = tr_time();
return (tr_isTorrent(tor) && now == tor->lastStatTime) ? &tor->stats : tr_torrentStat(tor);
}
void tr_torrentSetVerifyState(tr_torrent* tor, tr_verify_state state)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(state == TR_VERIFY_NONE || state == TR_VERIFY_WAIT || state == TR_VERIFY_NOW);
tor->verifyState = state;
tor->anyDate = tr_time();
}
tr_torrent_activity tr_torrentGetActivity(tr_torrent const* tor)
{
tr_torrent_activity ret = TR_STATUS_STOPPED;
bool const is_seed = tr_torrentIsSeed(tor);
if (tor->verifyState == TR_VERIFY_NOW)
{
ret = TR_STATUS_CHECK;
}
else if (tor->verifyState == TR_VERIFY_WAIT)
{
ret = TR_STATUS_CHECK_WAIT;
}
else if (tor->isRunning)
{
ret = is_seed ? TR_STATUS_SEED : TR_STATUS_DOWNLOAD;
}
else if (tr_torrentIsQueued(tor))
{
if (is_seed && tr_sessionGetQueueEnabled(tor->session, TR_UP))
{
ret = TR_STATUS_SEED_WAIT;
}
else if (!is_seed && tr_sessionGetQueueEnabled(tor->session, TR_DOWN))
{
ret = TR_STATUS_DOWNLOAD_WAIT;
}
}
return ret;
}
static int torrentGetIdleSecs(tr_torrent const* tor)
{
int idle_secs;
tr_torrent_activity const activity = tr_torrentGetActivity(tor);
if ((activity == TR_STATUS_DOWNLOAD || activity == TR_STATUS_SEED) && tor->startDate != 0)
{
idle_secs = (int)difftime(tr_time(), MAX(tor->startDate, tor->activityDate));
}
else
{
idle_secs = -1;
}
return idle_secs;
}
bool tr_torrentIsStalled(tr_torrent const* tor)
{
return tr_sessionGetQueueStalledEnabled(tor->session) &&
torrentGetIdleSecs(tor) > tr_sessionGetQueueStalledMinutes(tor->session) * 60;
}
static double getVerifyProgress(tr_torrent const* tor)
{
double d = 0;
if (tr_torrentHasMetadata(tor))
{
tr_piece_index_t checked = 0;
for (tr_piece_index_t i = 0; i < tor->info.pieceCount; ++i)
{
if (tor->info.pieces[i].timeChecked != 0)
{
++checked;
}
}
d = checked / (double)tor->info.pieceCount;
}
return d;
}
tr_stat const* tr_torrentStat(tr_torrent* tor)
{
TR_ASSERT(tr_isTorrent(tor));
uint64_t const now = tr_time_msec();
tr_stat* s;
uint64_t seedRatioBytesLeft;
uint64_t seedRatioBytesGoal;
bool seedRatioApplies;
uint16_t seedIdleMinutes;
unsigned int pieceUploadSpeed_Bps;
unsigned int pieceDownloadSpeed_Bps;
struct tr_swarm_stats swarm_stats;
tor->lastStatTime = tr_time();
if (tor->swarm != NULL)
{
tr_swarmGetStats(tor->swarm, &swarm_stats);
}
else
{
swarm_stats = TR_SWARM_STATS_INIT;
}
s = &tor->stats;
s->id = tor->uniqueId;
s->activity = tr_torrentGetActivity(tor);
s->error = tor->error;
s->queuePosition = tor->queuePosition;
s->isStalled = tr_torrentIsStalled(tor);
tr_strlcpy(s->errorString, tor->errorString, sizeof(s->errorString));
s->manualAnnounceTime = tr_announcerNextManualAnnounce(tor);
s->peersConnected = swarm_stats.peerCount;
s->peersSendingToUs = swarm_stats.activePeerCount[TR_DOWN];
s->peersGettingFromUs = swarm_stats.activePeerCount[TR_UP];
s->webseedsSendingToUs = swarm_stats.activeWebseedCount;
for (int i = 0; i < TR_PEER_FROM__MAX; i++)
{
s->peersFrom[i] = swarm_stats.peerFromCount[i];
}
s->rawUploadSpeed_KBps = toSpeedKBps(tr_bandwidthGetRawSpeed_Bps(&tor->bandwidth, now, TR_UP));
s->rawDownloadSpeed_KBps = toSpeedKBps(tr_bandwidthGetRawSpeed_Bps(&tor->bandwidth, now, TR_DOWN));
pieceUploadSpeed_Bps = tr_bandwidthGetPieceSpeed_Bps(&tor->bandwidth, now, TR_UP);
pieceDownloadSpeed_Bps = tr_bandwidthGetPieceSpeed_Bps(&tor->bandwidth, now, TR_DOWN);
s->pieceUploadSpeed_KBps = toSpeedKBps(pieceUploadSpeed_Bps);
s->pieceDownloadSpeed_KBps = toSpeedKBps(pieceDownloadSpeed_Bps);
s->percentComplete = tr_cpPercentComplete(&tor->completion);
s->metadataPercentComplete = tr_torrentGetMetadataPercent(tor);
s->percentDone = tr_cpPercentDone(&tor->completion);
s->leftUntilDone = tr_torrentGetLeftUntilDone(tor);
s->sizeWhenDone = tr_cpSizeWhenDone(&tor->completion);
s->recheckProgress = s->activity == TR_STATUS_CHECK ? getVerifyProgress(tor) : 0;
s->activityDate = tor->activityDate;
s->addedDate = tor->addedDate;
s->doneDate = tor->doneDate;
s->editDate = tor->editDate;
s->startDate = tor->startDate;
s->secondsSeeding = tor->secondsSeeding;
s->secondsDownloading = tor->secondsDownloading;
s->idleSecs = torrentGetIdleSecs(tor);
s->corruptEver = tor->corruptCur + tor->corruptPrev;
s->downloadedEver = tor->downloadedCur + tor->downloadedPrev;
s->uploadedEver = tor->uploadedCur + tor->uploadedPrev;
s->haveValid = tr_cpHaveValid(&tor->completion);
s->haveUnchecked = tr_torrentHaveTotal(tor) - s->haveValid;
s->desiredAvailable = tr_peerMgrGetDesiredAvailable(tor);
s->ratio = tr_getRatio(s->uploadedEver, s->downloadedEver != 0 ? s->downloadedEver : s->haveValid);
seedRatioApplies = tr_torrentGetSeedRatioBytes(tor, &seedRatioBytesLeft, &seedRatioBytesGoal);
switch (s->activity)
{
/* etaXLSpeed exists because if we use the piece speed directly,
* brief fluctuations cause the ETA to jump all over the place.
* so, etaXLSpeed is a smoothed-out version of the piece speed
* to dampen the effect of fluctuations */
case TR_STATUS_DOWNLOAD:
if (tor->etaDLSpeedCalculatedAt + 800 < now)
{
tor->etaDLSpeed_Bps = tor->etaDLSpeedCalculatedAt + 4000 < now ?
pieceDownloadSpeed_Bps : /* if no recent previous speed, no need to smooth */
(tor->etaDLSpeed_Bps * 4.0 + pieceDownloadSpeed_Bps) / 5.0; /* smooth across 5 readings */
tor->etaDLSpeedCalculatedAt = now;
}
if (s->leftUntilDone > s->desiredAvailable && tor->info.webseedCount < 1)
{
s->eta = TR_ETA_NOT_AVAIL;
}
else if (tor->etaDLSpeed_Bps == 0)
{
s->eta = TR_ETA_UNKNOWN;
}
else
{
s->eta = s->leftUntilDone / tor->etaDLSpeed_Bps;
}
s->etaIdle = TR_ETA_NOT_AVAIL;
break;
case TR_STATUS_SEED:
if (!seedRatioApplies)
{
s->eta = TR_ETA_NOT_AVAIL;
}
else
{
if (tor->etaULSpeedCalculatedAt + 800 < now)
{
tor->etaULSpeed_Bps = tor->etaULSpeedCalculatedAt + 4000 < now ?
pieceUploadSpeed_Bps : /* if no recent previous speed, no need to smooth */
(tor->etaULSpeed_Bps * 4.0 + pieceUploadSpeed_Bps) / 5.0; /* smooth across 5 readings */
tor->etaULSpeedCalculatedAt = now;
}
if (tor->etaULSpeed_Bps == 0)
{
s->eta = TR_ETA_UNKNOWN;
}
else
{
s->eta = seedRatioBytesLeft / tor->etaULSpeed_Bps;
}
}
if (tor->etaULSpeed_Bps < 1 && tr_torrentGetSeedIdle(tor, &seedIdleMinutes))
{
s->etaIdle = seedIdleMinutes * 60 - s->idleSecs;
}
else
{
s->etaIdle = TR_ETA_NOT_AVAIL;
}
break;
default:
s->eta = TR_ETA_NOT_AVAIL;
s->etaIdle = TR_ETA_NOT_AVAIL;
break;
}
/* s->haveValid is here to make sure a torrent isn't marked 'finished'
* when the user hits "uncheck all" prior to starting the torrent... */
s->finished = tor->finishedSeedingByIdle || (seedRatioApplies && seedRatioBytesLeft == 0 && s->haveValid != 0);
if (!seedRatioApplies || s->finished)
{
s->seedRatioPercentDone = 1;
}
else if (seedRatioBytesGoal == 0) /* impossible? safeguard for div by zero */
{
s->seedRatioPercentDone = 0;
}
else
{
s->seedRatioPercentDone = (double)(seedRatioBytesGoal - seedRatioBytesLeft) / seedRatioBytesGoal;
}
/* test some of the constraints */
TR_ASSERT(s->sizeWhenDone <= tor->info.totalSize);
TR_ASSERT(s->leftUntilDone <= s->sizeWhenDone);
TR_ASSERT(s->desiredAvailable <= s->leftUntilDone);
return s;
}
/***
****
***/
static uint64_t countFileBytesCompleted(tr_torrent const* tor, tr_file_index_t index)
{
uint64_t total = 0;
tr_file const* f = &tor->info.files[index];
if (f->length != 0)
{
tr_block_index_t first;
tr_block_index_t last;
tr_torGetFileBlockRange(tor, index, &first, &last);
if (first == last)
{
if (tr_torrentBlockIsComplete(tor, first))
{
total = f->length;
}
}
else
{
/* the first block */
if (tr_torrentBlockIsComplete(tor, first))
{
total += tor->blockSize - f->offset % tor->blockSize;
}
/* the middle blocks */
if (first + 1 < last)
{
uint64_t u = tr_bitfieldCountRange(&tor->completion.blockBitfield, first + 1, last);
u *= tor->blockSize;
total += u;
}
/* the last block */
if (tr_torrentBlockIsComplete(tor, last))
{
total += f->offset + f->length - (uint64_t)tor->blockSize * last;
}
}
}
return total;
}
tr_file_stat* tr_torrentFiles(tr_torrent const* tor, tr_file_index_t* fileCount)
{
TR_ASSERT(tr_isTorrent(tor));
tr_file_index_t const n = tor->info.fileCount;
tr_file_stat* files = tr_new0(tr_file_stat, n);
tr_file_stat* walk = files;
bool const isSeed = tor->completeness == TR_SEED;
for (tr_file_index_t i = 0; i < n; ++i)
{
uint64_t const length = tor->info.files[i].length;
uint64_t const b = isSeed ? length : countFileBytesCompleted(tor, i);
walk->bytesCompleted = b;
walk->progress = length > 0 ? (float)b / (float)length : 1.0F;
++walk;
}
if (fileCount != NULL)
{
*fileCount = n;
}
return files;
}
void tr_torrentFilesFree(tr_file_stat* files, tr_file_index_t fileCount)
{
TR_UNUSED(fileCount);
tr_free(files);
}
/***
****
***/
double* tr_torrentWebSpeeds_KBps(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tr_peerMgrWebSpeeds_KBps(tor);
}
tr_peer_stat* tr_torrentPeers(tr_torrent const* tor, int* peerCount)
{
TR_ASSERT(tr_isTorrent(tor));
return tr_peerMgrPeerStats(tor, peerCount);
}
void tr_torrentPeersFree(tr_peer_stat* peers, int peerCount)
{
TR_UNUSED(peerCount);
tr_free(peers);
}
tr_tracker_stat* tr_torrentTrackers(tr_torrent const* tor, int* setmeTrackerCount)
{
TR_ASSERT(tr_isTorrent(tor));
return tr_announcerStats(tor, setmeTrackerCount);
}
void tr_torrentTrackersFree(tr_tracker_stat* trackers, int trackerCount)
{
tr_announcerStatsFree(trackers, trackerCount);
}
void tr_torrentAvailability(tr_torrent const* tor, int8_t* tab, int size)
{
TR_ASSERT(tr_isTorrent(tor));
if (tab != NULL && size > 0)
{
tr_peerMgrTorrentAvailability(tor, tab, size);
}
}
void tr_torrentAmountFinished(tr_torrent const* tor, float* tab, int size)
{
tr_cpGetAmountDone(&tor->completion, tab, size);
}
static void tr_torrentResetTransferStats(tr_torrent* tor)
{
tr_torrentLock(tor);
tor->downloadedPrev += tor->downloadedCur;
tor->downloadedCur = 0;
tor->uploadedPrev += tor->uploadedCur;
tor->uploadedCur = 0;
tor->corruptPrev += tor->corruptCur;
tor->corruptCur = 0;
tr_torrentSetDirty(tor);
tr_torrentUnlock(tor);
}
void tr_torrentSetHasPiece(tr_torrent* tor, tr_piece_index_t pieceIndex, bool has)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(pieceIndex < tor->info.pieceCount);
if (has)
{
tr_cpPieceAdd(&tor->completion, pieceIndex);
}
else
{
tr_cpPieceRem(&tor->completion, pieceIndex);
}
}
/***
****
***/
#ifdef TR_ENABLE_ASSERTS
static bool queueIsSequenced(tr_session*);
#endif
static void freeTorrent(tr_torrent* tor)
{
TR_ASSERT(!tor->isRunning);
tr_session* session = tor->session;
tr_info* inf = &tor->info;
time_t const now = tr_time();
tr_sessionLock(session);
tr_peerMgrRemoveTorrent(tor);
tr_announcerRemoveTorrent(session->announcer, tor);
tr_cpDestruct(&tor->completion);
tr_free(tor->downloadDir);
tr_free(tor->incompleteDir);
if (tor == session->torrentList)
{
session->torrentList = tor->next;
}
else
{
for (tr_torrent* t = session->torrentList; t != NULL; t = t->next)
{
if (t->next == tor)
{
t->next = tor->next;
break;
}
}
}
/* decrement the torrent count */
TR_ASSERT(session->torrentCount >= 1);
session->torrentCount--;
/* resequence the queue positions */
tr_torrent* t = NULL;
while ((t = tr_torrentNext(session, t)) != NULL)
{
if (t->queuePosition > tor->queuePosition)
{
t->queuePosition--;
t->anyDate = now;
}
}
TR_ASSERT(queueIsSequenced(session));
tr_bandwidthDestruct(&tor->bandwidth);
tr_ptrArrayDestruct(&tor->labels, tr_free);
tr_metainfoFree(inf);
memset(tor, ~0, sizeof(tr_torrent));
tr_free(tor);
tr_sessionUnlock(session);
}
/**
*** Start/Stop Callback
**/
static void torrentSetQueued(tr_torrent* tor, bool queued);
static void torrentStartImpl(void* vtor)
{
tr_torrent* tor = vtor;
TR_ASSERT(tr_isTorrent(tor));
tr_sessionLock(tor->session);
tr_torrentRecheckCompleteness(tor);
torrentSetQueued(tor, false);
time_t const now = tr_time();
tor->isRunning = true;
tor->completeness = tr_cpGetStatus(&tor->completion);
tor->startDate = now;
tor->anyDate = now;
tr_torrentClearError(tor);
tor->finishedSeedingByIdle = false;
tr_torrentResetTransferStats(tor);
tr_announcerTorrentStarted(tor);
tor->dhtAnnounceAt = now + tr_rand_int_weak(20);
tor->dhtAnnounce6At = now + tr_rand_int_weak(20);
tor->lpdAnnounceAt = now;
tr_peerMgrStartTorrent(tor);
tr_sessionUnlock(tor->session);
}
uint64_t tr_torrentGetCurrentSizeOnDisk(tr_torrent const* tor)
{
uint64_t byte_count = 0;
tr_file_index_t const n = tor->info.fileCount;
for (tr_file_index_t i = 0; i < n; ++i)
{
tr_sys_path_info info;
char* filename = tr_torrentFindFile(tor, i);
if (filename != NULL && tr_sys_path_get_info(filename, 0, &info, NULL))
{
byte_count += info.size;
}
tr_free(filename);
}
return byte_count;
}
static bool torrentShouldQueue(tr_torrent const* tor)
{
tr_direction const dir = tr_torrentGetQueueDirection(tor);
return tr_sessionCountQueueFreeSlots(tor->session, dir) == 0;
}
static void torrentStart(tr_torrent* tor, bool bypass_queue)
{
switch (tr_torrentGetActivity(tor))
{
case TR_STATUS_SEED:
case TR_STATUS_DOWNLOAD:
return; /* already started */
case TR_STATUS_SEED_WAIT:
case TR_STATUS_DOWNLOAD_WAIT:
if (!bypass_queue)
{
return; /* already queued */
}
break;
case TR_STATUS_CHECK:
case TR_STATUS_CHECK_WAIT:
/* verifying right now... wait until that's done so
* we'll know what completeness to use/announce */
tor->startAfterVerify = true;
return;
case TR_STATUS_STOPPED:
if (!bypass_queue && torrentShouldQueue(tor))
{
torrentSetQueued(tor, true);
return;
}
break;
}
/* don't allow the torrent to be started if the files disappeared */
if (setLocalErrorIfFilesDisappeared(tor))
{
return;
}
/* otherwise, start it now... */
tr_sessionLock(tor->session);
/* allow finished torrents to be resumed */
if (tr_torrentIsSeedRatioDone(tor))
{
tr_logAddTorInfo(tor, "%s", _("Restarted manually -- disabling its seed ratio"));
tr_torrentSetRatioMode(tor, TR_RATIOLIMIT_UNLIMITED);
}
/* corresponds to the peer_id sent as a tracker request parameter.
* one tracker admin says: "When the same torrent is opened and
* closed and opened again without quitting Transmission ...
* change the peerid. It would help sometimes if a stopped event
* was missed to ensure that we didn't think someone was cheating. */
tr_torrentUnsetPeerId(tor);
tor->isRunning = true;
tr_torrentSetDirty(tor);
tr_runInEventThread(tor->session, torrentStartImpl, tor);
tr_sessionUnlock(tor->session);
}
void tr_torrentStart(tr_torrent* tor)
{
if (tr_isTorrent(tor))
{
torrentStart(tor, false);
}
}
void tr_torrentStartNow(tr_torrent* tor)
{
if (tr_isTorrent(tor))
{
torrentStart(tor, true);
}
}
struct verify_data
{
bool aborted;
tr_torrent* tor;
tr_verify_done_func callback_func;
void* callback_data;
};
static void onVerifyDoneThreadFunc(void* vdata)
{
struct verify_data* data = vdata;
tr_torrent* tor = data->tor;
if (!tor->isDeleting)
{
if (!data->aborted)
{
tr_torrentRecheckCompleteness(tor);
}
if (data->callback_func != NULL)
{
(*data->callback_func)(tor, data->aborted, data->callback_data);
}
if (!data->aborted && tor->startAfterVerify)
{
tor->startAfterVerify = false;
torrentStart(tor, false);
}
}
tr_free(data);
}
static void onVerifyDone(tr_torrent* tor, bool aborted, void* vdata)
{
struct verify_data* data = vdata;
TR_ASSERT(data->tor == tor);
if (tor->isDeleting)
{
tr_free(data);
return;
}
data->aborted = aborted;
tr_runInEventThread(tor->session, onVerifyDoneThreadFunc, data);
}
static void verifyTorrent(void* vdata)
{
bool startAfter;
struct verify_data* data = vdata;
tr_torrent* tor = data->tor;
tr_sessionLock(tor->session);
if (tor->isDeleting)
{
tr_free(data);
goto unlock;
}
/* if the torrent's already being verified, stop it */
tr_verifyRemove(tor);
startAfter = (tor->isRunning || tor->startAfterVerify) && !tor->isStopping;
if (tor->isRunning)
{
tr_torrentStop(tor);
}
tor->startAfterVerify = startAfter;
if (setLocalErrorIfFilesDisappeared(tor))
{
tor->startAfterVerify = false;
}
else
{
tr_verifyAdd(tor, onVerifyDone, data);
}
unlock:
tr_sessionUnlock(tor->session);
}
void tr_torrentVerify(tr_torrent* tor, tr_verify_done_func callback_func, void* callback_data)
{
struct verify_data* data;
data = tr_new(struct verify_data, 1);
data->tor = tor;
data->aborted = false;
data->callback_func = callback_func;
data->callback_data = callback_data;
tr_runInEventThread(tor->session, verifyTorrent, data);
}
void tr_torrentSave(tr_torrent* tor)
{
TR_ASSERT(tr_isTorrent(tor));
if (tor->isDirty)
{
tor->isDirty = false;
tr_torrentSaveResume(tor);
}
}
static void stopTorrent(void* vtor)
{
tr_torrent* tor = vtor;
TR_ASSERT(tr_isTorrent(tor));
tr_logAddTorInfo(tor, "%s", "Pausing");
tr_torrentLock(tor);
tr_verifyRemove(tor);
tr_peerMgrStopTorrent(tor);
tr_announcerTorrentStopped(tor);
tr_cacheFlushTorrent(tor->session->cache, tor);
tr_fdTorrentClose(tor->session, tor->uniqueId);
if (!tor->isDeleting)
{
tr_torrentSave(tor);
}
torrentSetQueued(tor, false);
tr_torrentUnlock(tor);
if (tor->magnetVerify)
{
tor->magnetVerify = false;
tr_logAddTorInfo(tor, "%s", "Magnet Verify");
refreshCurrentDir(tor);
tr_torrentVerify(tor, NULL, NULL);
}
}
void tr_torrentStop(tr_torrent* tor)
{
TR_ASSERT(tr_isTorrent(tor));
if (tr_isTorrent(tor))
{
tr_sessionLock(tor->session);
tor->isRunning = false;
tor->isStopping = false;
tr_torrentSetDirty(tor);
tr_runInEventThread(tor->session, stopTorrent, tor);
tr_sessionUnlock(tor->session);
}
}
static void closeTorrent(void* vtor)
{
tr_torrent* tor = vtor;
TR_ASSERT(tr_isTorrent(tor));
tr_variant* d = tr_variantListAddDict(&tor->session->removedTorrents, 2);
tr_variantDictAddInt(d, TR_KEY_id, tor->uniqueId);
tr_variantDictAddInt(d, TR_KEY_date, tr_time());
tr_logAddTorInfo(tor, "%s", _("Removing torrent"));
tor->magnetVerify = false;
stopTorrent(tor);
if (tor->isDeleting)
{
tr_metainfoRemoveSaved(tor->session, &tor->info);
tr_torrentRemoveResume(tor);
}
tor->isRunning = false;
freeTorrent(tor);
}
void tr_torrentFree(tr_torrent* tor)
{
if (tr_isTorrent(tor))
{
tr_session* session = tor->session;
TR_ASSERT(tr_isSession(session));
tr_sessionLock(session);
tr_torrentClearCompletenessCallback(tor);
tr_runInEventThread(session, closeTorrent, tor);
tr_sessionUnlock(session);
}
}
struct remove_data
{
tr_torrent* tor;
bool deleteFlag;
tr_fileFunc deleteFunc;
};
static void tr_torrentDeleteLocalData(tr_torrent*, tr_fileFunc);
static void removeTorrent(void* vdata)
{
struct remove_data* data = vdata;
tr_session* session = data->tor->session;
tr_sessionLock(session);
if (data->deleteFlag)
{
tr_torrentDeleteLocalData(data->tor, data->deleteFunc);
}
tr_torrentClearCompletenessCallback(data->tor);
closeTorrent(data->tor);
tr_free(data);
tr_sessionUnlock(session);
}
void tr_torrentRemove(tr_torrent* tor, bool deleteFlag, tr_fileFunc deleteFunc)
{
TR_ASSERT(tr_isTorrent(tor));
tor->isDeleting = true;
struct remove_data* data = tr_new0(struct remove_data, 1);
data->tor = tor;
data->deleteFlag = deleteFlag;
data->deleteFunc = deleteFunc;
tr_runInEventThread(tor->session, removeTorrent, data);
}
/**
*** Completeness
**/
static char const* getCompletionString(int type)
{
switch (type)
{
case TR_PARTIAL_SEED:
/* Translators: this is a minor point that's safe to skip over, but FYI:
"Complete" and "Done" are specific, different terms in Transmission:
"Complete" means we've downloaded every file in the torrent.
"Done" means we're done downloading the files we wanted, but NOT all
that exist */
return _("Done");
case TR_SEED:
return _("Complete");
default:
return _("Incomplete");
}
}
static void fireCompletenessChange(tr_torrent* tor, tr_completeness status, bool wasRunning)
{
TR_ASSERT(status == TR_LEECH || status == TR_SEED || status == TR_PARTIAL_SEED);
if (tor->completeness_func != NULL)
{
(*tor->completeness_func)(tor, status, wasRunning, tor->completeness_func_user_data);
}
}
void tr_torrentSetCompletenessCallback(tr_torrent* tor, tr_torrent_completeness_func func, void* user_data)
{
TR_ASSERT(tr_isTorrent(tor));
tor->completeness_func = func;
tor->completeness_func_user_data = user_data;
}
void tr_torrentClearCompletenessCallback(tr_torrent* torrent)
{
tr_torrentSetCompletenessCallback(torrent, NULL, NULL);
}
void tr_torrentSetRatioLimitHitCallback(tr_torrent* tor, tr_torrent_ratio_limit_hit_func func, void* user_data)
{
TR_ASSERT(tr_isTorrent(tor));
tor->ratio_limit_hit_func = func;
tor->ratio_limit_hit_func_user_data = user_data;
}
void tr_torrentClearRatioLimitHitCallback(tr_torrent* torrent)
{
tr_torrentSetRatioLimitHitCallback(torrent, NULL, NULL);
}
void tr_torrentSetIdleLimitHitCallback(tr_torrent* tor, tr_torrent_idle_limit_hit_func func, void* user_data)
{
TR_ASSERT(tr_isTorrent(tor));
tor->idle_limit_hit_func = func;
tor->idle_limit_hit_func_user_data = user_data;
}
void tr_torrentClearIdleLimitHitCallback(tr_torrent* torrent)
{
tr_torrentSetIdleLimitHitCallback(torrent, NULL, NULL);
}
static void torrentCallScript(tr_torrent const* tor, char const* script)
{
if (tr_str_is_empty(script))
{
return;
}
time_t const now = tr_time();
struct tm tm;
char ctime_str[32];
tr_localtime_r(&now, &tm);
strftime(ctime_str, sizeof(ctime_str), "%a %b %2e %T %Y%n", &tm); /* ctime equiv */
char* const torrent_dir = tr_sys_path_native_separators(tr_strdup(tor->currentDir));
char* const cmd[] = {
tr_strdup(script),
NULL,
};
char* labels = tr_strjoin((char const* const*)tr_ptrArrayBase(&tor->labels), tr_ptrArraySize(&tor->labels), ",");
char* const env[] = {
tr_strdup_printf("TR_APP_VERSION=%s", SHORT_VERSION_STRING),
tr_strdup_printf("TR_TIME_LOCALTIME=%s", ctime_str),
tr_strdup_printf("TR_TORRENT_DIR=%s", torrent_dir),
tr_strdup_printf("TR_TORRENT_HASH=%s", tor->info.hashString),
tr_strdup_printf("TR_TORRENT_ID=%d", tr_torrentId(tor)),
tr_strdup_printf("TR_TORRENT_NAME=%s", tr_torrentName(tor)),
tr_strdup_printf("TR_TORRENT_LABELS=%s", labels),
NULL,
};
tr_logAddTorInfo(tor, "Calling script \"%s\"", script);
tr_error* error = NULL;
if (!tr_spawn_async(cmd, env, TR_IF_WIN32("\\", "/"), &error))
{
tr_logAddTorErr(tor, "Error executing script \"%s\" (%d): %s", script, error->code, error->message);
tr_error_free(error);
}
tr_free_ptrv((void* const*)env);
tr_free_ptrv((void* const*)cmd);
tr_free(labels);
tr_free(torrent_dir);
}
void tr_torrentRecheckCompleteness(tr_torrent* tor)
{
tr_completeness completeness;
tr_torrentLock(tor);
completeness = tr_cpGetStatus(&tor->completion);
if (completeness != tor->completeness)
{
bool const recentChange = tor->downloadedCur != 0;
bool const wasLeeching = !tr_torrentIsSeed(tor);
bool const wasRunning = tor->isRunning;
if (recentChange)
{
tr_logAddTorInfo(
tor,
_("State changed from \"%1$s\" to \"%2$s\""),
getCompletionString(tor->completeness),
getCompletionString(completeness));
}
tor->completeness = completeness;
tr_fdTorrentClose(tor->session, tor->uniqueId);
if (tr_torrentIsSeed(tor))
{
if (recentChange)
{
tr_announcerTorrentCompleted(tor);
tor->doneDate = tor->anyDate = tr_time();
}
if (wasLeeching && wasRunning)
{
/* clear interested flag on all peers */
tr_peerMgrClearInterest(tor);
}
if (tor->currentDir == tor->incompleteDir)
{
tr_torrentSetLocation(tor, tor->downloadDir, true, NULL, NULL);
}
}
fireCompletenessChange(tor, completeness, wasRunning);
if (tr_torrentIsSeed(tor) && wasLeeching && wasRunning)
{
/* if completeness was TR_LEECH, the seed limit check
will have been skipped in bandwidthPulse */
tr_torrentCheckSeedLimit(tor);
}
tr_torrentSetDirty(tor);
if (tr_torrentIsSeed(tor) && tr_sessionIsTorrentDoneScriptEnabled(tor->session))
{
tr_torrentSave(tor);
torrentCallScript(tor, tr_sessionGetTorrentDoneScript(tor->session));
}
}
tr_torrentUnlock(tor);
}
/***
****
***/
static void tr_torrentFireMetadataCompleted(tr_torrent* tor)
{
TR_ASSERT(tr_isTorrent(tor));
if (tor->metadata_func != NULL)
{
(*tor->metadata_func)(tor, tor->metadata_func_user_data);
}
}
void tr_torrentSetMetadataCallback(tr_torrent* tor, tr_torrent_metadata_func func, void* user_data)
{
TR_ASSERT(tr_isTorrent(tor));
tor->metadata_func = func;
tor->metadata_func_user_data = user_data;
}
/**
*** File priorities
**/
void tr_torrentInitFilePriority(tr_torrent* tor, tr_file_index_t fileIndex, tr_priority_t priority)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(fileIndex < tor->info.fileCount);
TR_ASSERT(tr_isPriority(priority));
tr_file* file = &tor->info.files[fileIndex];
file->priority = priority;
for (tr_piece_index_t i = file->firstPiece; i <= file->lastPiece; ++i)
{
tor->info.pieces[i].priority = calculatePiecePriority(tor, i, fileIndex);
}
}
void tr_torrentSetFilePriorities(
tr_torrent* tor,
tr_file_index_t const* files,
tr_file_index_t fileCount,
tr_priority_t priority)
{
TR_ASSERT(tr_isTorrent(tor));
tr_torrentLock(tor);
for (tr_file_index_t i = 0; i < fileCount; ++i)
{
if (files[i] < tor->info.fileCount)
{
tr_torrentInitFilePriority(tor, files[i], priority);
}
}
tr_torrentSetDirty(tor);
tr_peerMgrRebuildRequests(tor);
tr_torrentUnlock(tor);
}
tr_priority_t* tr_torrentGetFilePriorities(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
tr_priority_t* p = tr_new0(tr_priority_t, tor->info.fileCount);
for (tr_file_index_t i = 0; i < tor->info.fileCount; ++i)
{
p[i] = tor->info.files[i].priority;
}
return p;
}
/**
*** File DND
**/
static void setFileDND(tr_torrent* tor, tr_file_index_t fileIndex, bool doDownload)
{
bool const dnd = !doDownload;
tr_piece_index_t firstPiece;
bool firstPieceDND;
tr_piece_index_t lastPiece;
bool lastPieceDND;
tr_file* file = &tor->info.files[fileIndex];
file->dnd = dnd;
firstPiece = file->firstPiece;
lastPiece = file->lastPiece;
/* can't set the first piece to DND unless
every file using that piece is DND */
firstPieceDND = dnd;
if (fileIndex > 0)
{
for (tr_file_index_t i = fileIndex - 1; firstPieceDND; --i)
{
if (tor->info.files[i].lastPiece != firstPiece)
{
break;
}
firstPieceDND = tor->info.files[i].dnd;
if (i == 0)
{
break;
}
}
}
/* can't set the last piece to DND unless
every file using that piece is DND */
lastPieceDND = dnd;
for (tr_file_index_t i = fileIndex + 1; lastPieceDND && i < tor->info.fileCount; ++i)
{
if (tor->info.files[i].firstPiece != lastPiece)
{
break;
}
lastPieceDND = tor->info.files[i].dnd;
}
if (firstPiece == lastPiece)
{
tor->info.pieces[firstPiece].dnd = firstPieceDND && lastPieceDND;
}
else
{
tor->info.pieces[firstPiece].dnd = firstPieceDND;
tor->info.pieces[lastPiece].dnd = lastPieceDND;
for (tr_piece_index_t pp = firstPiece + 1; pp < lastPiece; ++pp)
{
tor->info.pieces[pp].dnd = dnd;
}
}
}
void tr_torrentInitFileDLs(tr_torrent* tor, tr_file_index_t const* files, tr_file_index_t fileCount, bool doDownload)
{
TR_ASSERT(tr_isTorrent(tor));
tr_torrentLock(tor);
for (tr_file_index_t i = 0; i < fileCount; ++i)
{
if (files[i] < tor->info.fileCount)
{
setFileDND(tor, files[i], doDownload);
}
}
tr_cpInvalidateDND(&tor->completion);
tr_torrentUnlock(tor);
}
void tr_torrentSetFileDLs(tr_torrent* tor, tr_file_index_t const* files, tr_file_index_t fileCount, bool doDownload)
{
TR_ASSERT(tr_isTorrent(tor));
tr_torrentLock(tor);
tr_torrentInitFileDLs(tor, files, fileCount, doDownload);
tr_torrentSetDirty(tor);
tr_torrentRecheckCompleteness(tor);
tr_peerMgrRebuildRequests(tor);
tr_torrentUnlock(tor);
}
/***
****
***/
void tr_torrentSetLabels(tr_torrent* tor, tr_ptrArray* labels)
{
TR_ASSERT(tr_isTorrent(tor));
tr_torrentLock(tor);
tr_ptrArrayDestruct(&tor->labels, tr_free);
tor->labels = TR_PTR_ARRAY_INIT;
char** l = (char**)tr_ptrArrayBase(labels);
int const n = tr_ptrArraySize(labels);
for (int i = 0; i < n; i++)
{
tr_ptrArrayAppend(&tor->labels, tr_strdup(l[i]));
}
tr_torrentSetDirty(tor);
tr_torrentUnlock(tor);
}
/***
****
***/
tr_priority_t tr_torrentGetPriority(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tor->bandwidth.priority;
}
void tr_torrentSetPriority(tr_torrent* tor, tr_priority_t priority)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(tr_isPriority(priority));
if (tor->bandwidth.priority != priority)
{
tor->bandwidth.priority = priority;
tr_torrentSetDirty(tor);
}
}
/***
****
***/
void tr_torrentSetPeerLimit(tr_torrent* tor, uint16_t maxConnectedPeers)
{
TR_ASSERT(tr_isTorrent(tor));
if (tor->maxConnectedPeers != maxConnectedPeers)
{
tor->maxConnectedPeers = maxConnectedPeers;
tr_torrentSetDirty(tor);
}
}
uint16_t tr_torrentGetPeerLimit(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
return tor->maxConnectedPeers;
}
/***
****
***/
void tr_torrentGetBlockLocation(
tr_torrent const* tor,
tr_block_index_t block,
tr_piece_index_t* piece,
uint32_t* offset,
uint32_t* length)
{
uint64_t pos = block;
pos *= tor->blockSize;
*piece = pos / tor->info.pieceSize;
uint64_t piece_begin = tor->info.pieceSize;
piece_begin *= *piece;
*offset = pos - piece_begin;
*length = tr_torBlockCountBytes(tor, block);
}
tr_block_index_t _tr_block(tr_torrent const* tor, tr_piece_index_t index, uint32_t offset)
{
TR_ASSERT(tr_isTorrent(tor));
tr_block_index_t ret = 0;
if (tor->blockSize > 0)
{
ret = index;
ret *= tor->info.pieceSize / tor->blockSize;
ret += offset / tor->blockSize;
}
else
{
tr_logAddTorErr(tor, "Cannot calculate block number when blockSize is zero");
TR_ASSERT(tor->blockSize > 0);
}
return ret;
}
bool tr_torrentReqIsValid(tr_torrent const* tor, tr_piece_index_t index, uint32_t offset, uint32_t length)
{
TR_ASSERT(tr_isTorrent(tor));
int err = 0;
if (index >= tor->info.pieceCount)
{
err = 1;
}
else if (length < 1)
{
err = 2;
}
else if (offset + length > tr_torPieceCountBytes(tor, index))
{
err = 3;
}
else if (length > MAX_BLOCK_SIZE)
{
err = 4;
}
else if (tr_pieceOffset(tor, index, offset, length) > tor->info.totalSize)
{
err = 5;
}
if (err != 0)
{
tr_logAddTorDbg(
tor,
"index %lu offset %lu length %lu err %d\n",
(unsigned long)index,
(unsigned long)offset,
(unsigned long)length,
err);
}
return err == 0;
}
uint64_t tr_pieceOffset(tr_torrent const* tor, tr_piece_index_t index, uint32_t offset, uint32_t length)
{
TR_ASSERT(tr_isTorrent(tor));
uint64_t ret;
ret = tor->info.pieceSize;
ret *= index;
ret += offset;
ret += length;
return ret;
}
void tr_torGetFileBlockRange(tr_torrent const* tor, tr_file_index_t const file, tr_block_index_t* first, tr_block_index_t* last)
{
tr_file const* f = &tor->info.files[file];
uint64_t offset = f->offset;
*first = offset / tor->blockSize;
if (f->length == 0)
{
*last = *first;
}
else
{
offset += f->length - 1;
*last = offset / tor->blockSize;
}
}
void tr_torGetPieceBlockRange(
tr_torrent const* tor,
tr_piece_index_t const piece,
tr_block_index_t* first,
tr_block_index_t* last)
{
uint64_t offset = tor->info.pieceSize;
offset *= piece;
*first = offset / tor->blockSize;
offset += tr_torPieceCountBytes(tor, piece) - 1;
*last = offset / tor->blockSize;
}
/***
****
***/
void tr_torrentSetPieceChecked(tr_torrent* tor, tr_piece_index_t pieceIndex)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(pieceIndex < tor->info.pieceCount);
tor->info.pieces[pieceIndex].timeChecked = tr_time();
}
void tr_torrentSetChecked(tr_torrent* tor, time_t when)
{
TR_ASSERT(tr_isTorrent(tor));
for (tr_piece_index_t i = 0; i < tor->info.pieceCount; ++i)
{
tor->info.pieces[i].timeChecked = when;
}
}
bool tr_torrentCheckPiece(tr_torrent* tor, tr_piece_index_t pieceIndex)
{
bool const pass = tr_ioTestPiece(tor, pieceIndex);
tr_deeplog_tor(tor, "[LAZY] tr_torrentCheckPiece tested piece %zu, pass==%d", (size_t)pieceIndex, (int)pass);
tr_torrentSetHasPiece(tor, pieceIndex, pass);
tr_torrentSetPieceChecked(tor, pieceIndex);
tor->anyDate = tr_time();
tr_torrentSetDirty(tor);
return pass;
}
time_t tr_torrentGetFileMTime(tr_torrent const* tor, tr_file_index_t i)
{
time_t mtime = 0;
if (!tr_fdFileGetCachedMTime(tor->session, tor->uniqueId, i, &mtime))
{
tr_torrentFindFile2(tor, i, NULL, NULL, &mtime);
}
return mtime;
}
bool tr_torrentPieceNeedsCheck(tr_torrent const* tor, tr_piece_index_t p)
{
tr_info const* const inf = tr_torrentInfo(tor);
if (inf == NULL)
{
return false;
}
/* if we've never checked this piece, then it needs to be checked */
if (inf->pieces[p].timeChecked == 0)
{
return true;
}
/* If we think we've completed one of the files in this piece,
* but it's been modified since we last checked it,
* then it needs to be rechecked */
tr_file_index_t f;
uint64_t unused;
tr_ioFindFileLocation(tor, p, 0, &f, &unused);
for (tr_file_index_t i = f; i < inf->fileCount && pieceHasFile(p, &inf->files[i]); ++i)
{
if (tr_cpFileIsComplete(&tor->completion, i) && (tr_torrentGetFileMTime(tor, i) > inf->pieces[p].timeChecked))
{
return true;
}
}
return false;
}
/***
****
***/
static int compareTrackerByTier(void const* va, void const* vb)
{
tr_tracker_info const* a = va;
tr_tracker_info const* b = vb;
/* sort by tier */
if (a->tier != b->tier)
{
return a->tier - b->tier;
}
/* get the effects of a stable sort by comparing the two elements' addresses */
return a - b;
}
bool tr_torrentSetAnnounceList(tr_torrent* tor, tr_tracker_info const* trackers_in, int trackerCount)
{
TR_ASSERT(tr_isTorrent(tor));
tr_torrentLock(tor);
tr_variant metainfo;
bool ok = true;
tr_tracker_info* trackers;
/* ensure the trackers' tiers are in ascending order */
trackers = tr_memdup(trackers_in, sizeof(tr_tracker_info) * trackerCount);
qsort(trackers, trackerCount, sizeof(tr_tracker_info), compareTrackerByTier);
/* look for bad URLs */
for (int i = 0; ok && i < trackerCount; ++i)
{
if (!tr_urlIsValidTracker(trackers[i].announce))
{
ok = false;
}
}
/* save to the .torrent file */
if (ok && tr_variantFromFile(&metainfo, TR_VARIANT_FMT_BENC, tor->info.torrent, NULL))
{
bool hasInfo;
tr_info tmpInfo;
/* remove the old fields */
tr_variantDictRemove(&metainfo, TR_KEY_announce);
tr_variantDictRemove(&metainfo, TR_KEY_announce_list);
/* add the new fields */
if (trackerCount > 0)
{
tr_variantDictAddStr(&metainfo, TR_KEY_announce, trackers[0].announce);
}
if (trackerCount > 1)
{
int prevTier = -1;
tr_variant* tier = NULL;
tr_variant* announceList = tr_variantDictAddList(&metainfo, TR_KEY_announce_list, 0);
for (int i = 0; i < trackerCount; ++i)
{
if (prevTier != trackers[i].tier)
{
prevTier = trackers[i].tier;
tier = tr_variantListAddList(announceList, 0);
}
tr_variantListAddStr(tier, trackers[i].announce);
}
}
/* try to parse it back again, to make sure it's good */
memset(&tmpInfo, 0, sizeof(tr_info));
if (tr_metainfoParse(tor->session, &metainfo, &tmpInfo, &hasInfo, &tor->infoDictLength))
{
/* it's good, so keep these new trackers and free the old ones */
tr_info swap;
swap.trackers = tor->info.trackers;
swap.trackerCount = tor->info.trackerCount;
tor->info.trackers = tmpInfo.trackers;
tor->info.trackerCount = tmpInfo.trackerCount;
tmpInfo.trackers = swap.trackers;
tmpInfo.trackerCount = swap.trackerCount;
tr_torrentMarkEdited(tor);
tr_metainfoFree(&tmpInfo);
tr_variantToFile(&metainfo, TR_VARIANT_FMT_BENC, tor->info.torrent);
}
/* cleanup */
tr_variantFree(&metainfo);
/* if we had a tracker-related error on this torrent,
* and that tracker's been removed,
* then clear the error */
if (tor->error == TR_STAT_TRACKER_WARNING || tor->error == TR_STAT_TRACKER_ERROR)
{
bool clear = true;
for (int i = 0; clear && i < trackerCount; ++i)
{
if (strcmp(trackers[i].announce, tor->errorTracker) == 0)
{
clear = false;
}
}
if (clear)
{
tr_torrentClearError(tor);
}
}
/* tell the announcer to reload this torrent's tracker list */
tr_announcerResetTorrent(tor->session->announcer, tor);
}
tr_torrentUnlock(tor);
tr_free(trackers);
return ok;
}
/**
***
**/
#define BACK_COMPAT_FUNC(oldname, newname) \
void oldname(tr_torrent* tor, time_t t) \
{ \
newname(tor, t); \
}
BACK_COMPAT_FUNC(tr_torrentSetAddedDate, tr_torrentSetDateAdded)
BACK_COMPAT_FUNC(tr_torrentSetActivityDate, tr_torrentSetDateActive)
BACK_COMPAT_FUNC(tr_torrentSetDoneDate, tr_torrentSetDateDone)
#undef BACK_COMPAT_FUNC
void tr_torrentSetDateAdded(tr_torrent* tor, time_t t)
{
TR_ASSERT(tr_isTorrent(tor));
tor->addedDate = t;
tor->anyDate = MAX(tor->anyDate, tor->addedDate);
}
void tr_torrentSetDateActive(tr_torrent* tor, time_t t)
{
TR_ASSERT(tr_isTorrent(tor));
tor->activityDate = t;
tor->anyDate = MAX(tor->anyDate, tor->activityDate);
}
void tr_torrentSetDateDone(tr_torrent* tor, time_t t)
{
TR_ASSERT(tr_isTorrent(tor));
tor->doneDate = t;
tor->anyDate = MAX(tor->anyDate, tor->doneDate);
}
/**
***
**/
uint64_t tr_torrentGetBytesLeftToAllocate(tr_torrent const* tor)
{
TR_ASSERT(tr_isTorrent(tor));
uint64_t bytesLeft = 0;
for (tr_file_index_t i = 0; i < tor->info.fileCount; ++i)
{
if (!tor->info.files[i].dnd)
{
tr_sys_path_info info;
uint64_t const length = tor->info.files[i].length;
char* path = tr_torrentFindFile(tor, i);
bytesLeft += length;
if (path != NULL && tr_sys_path_get_info(path, 0, &info, NULL) && info.type == TR_SYS_PATH_IS_FILE &&
info.size <= length)
{
bytesLeft -= info.size;
}
tr_free(path);
}
}
return bytesLeft;
}
/****
***** Removing the torrent's local data
****/
static bool isJunkFile(char const* base)
{
static char const* files[] = {
".DS_Store",
"desktop.ini",
"Thumbs.db",
};
for (size_t i = 0; i < TR_N_ELEMENTS(files); ++i)
{
if (strcmp(base, files[i]) == 0)
{
return true;
}
}
#ifdef __APPLE__
/* check for resource forks. <http://support.apple.com/kb/TA20578> */
if (memcmp(base, "._", 2) == 0)
{
return true;
}
#endif
return false;
}
static void removeEmptyFoldersAndJunkFiles(char const* folder)
{
tr_sys_dir_t odir;
if ((odir = tr_sys_dir_open(folder, NULL)) != TR_BAD_SYS_DIR)
{
char const* name;
while ((name = tr_sys_dir_read_name(odir, NULL)) != NULL)
{
if (strcmp(name, ".") != 0 && strcmp(name, "..") != 0)
{
tr_sys_path_info info;
char* filename = tr_buildPath(folder, name, NULL);
if (tr_sys_path_get_info(filename, 0, &info, NULL) && info.type == TR_SYS_PATH_IS_DIRECTORY)
{
removeEmptyFoldersAndJunkFiles(filename);
}
else if (isJunkFile(name))
{
tr_sys_path_remove(filename, NULL);
}
tr_free(filename);
}
}
tr_sys_path_remove(folder, NULL);
tr_sys_dir_close(odir, NULL);
}
}
/**
* This convoluted code does something (seemingly) simple:
* remove the torrent's local files.
*
* Fun complications:
* 1. Try to preserve the directory hierarchy in the recycle bin.
* 2. If there are nontorrent files, don't delete them...
* 3. ...unless the other files are "junk", such as .DS_Store
*/
static void deleteLocalData(tr_torrent* tor, tr_fileFunc func)
{
char* base;
tr_sys_dir_t odir;
char* tmpdir = NULL;
tr_ptrArray files = TR_PTR_ARRAY_INIT;
tr_ptrArray folders = TR_PTR_ARRAY_INIT;
PtrArrayCompareFunc vstrcmp = (PtrArrayCompareFunc)strcmp;
char const* const top = tor->currentDir;
/* don't try to delete local data if the directory's gone missing */
if (!tr_sys_path_exists(top, NULL))
{
return;
}
/* if it's a magnet link, there's nothing to move... */
if (!tr_torrentHasMetadata(tor))
{
return;
}
/***
**** Move the local data to a new tmpdir
***/
base = tr_strdup_printf("%s__XXXXXX", tr_torrentName(tor));
tmpdir = tr_buildPath(top, base, NULL);
tr_sys_dir_create_temp(tmpdir, NULL);
tr_free(base);
for (tr_file_index_t f = 0; f < tor->info.fileCount; ++f)
{
char* filename;
/* try to find the file, looking in the partial and download dirs */
filename = tr_buildPath(top, tor->info.files[f].name, NULL);
if (!tr_sys_path_exists(filename, NULL))
{
char* partial = tr_torrentBuildPartial(tor, f);
tr_free(filename);
filename = tr_buildPath(top, partial, NULL);
tr_free(partial);
if (!tr_sys_path_exists(filename, NULL))
{
tr_free(filename);
filename = NULL;
}
}
/* if we found the file, move it */
if (filename != NULL)
{
char* target = tr_buildPath(tmpdir, tor->info.files[f].name, NULL);
tr_moveFile(filename, target, NULL);
tr_ptrArrayAppend(&files, target);
tr_free(filename);
}
}
/***
**** Remove tmpdir.
****
**** Try deleting the top-level files & folders to preserve
**** the directory hierarchy in the recycle bin.
**** If case that fails -- for example, rmdir () doesn't
**** delete nonempty folders -- go from the bottom up too.
***/
/* try deleting the local data's top-level files & folders */
if ((odir = tr_sys_dir_open(tmpdir, NULL)) != TR_BAD_SYS_DIR)
{
char const* name;
while ((name = tr_sys_dir_read_name(odir, NULL)) != NULL)
{
if (strcmp(name, ".") != 0 && strcmp(name, "..") != 0)
{
char* file = tr_buildPath(tmpdir, name, NULL);
(*func)(file, NULL);
tr_free(file);
}
}
tr_sys_dir_close(odir, NULL);
}
/* go from the bottom up */
for (int i = 0, n = tr_ptrArraySize(&files); i < n; ++i)
{
char* walk = tr_strdup(tr_ptrArrayNth(&files, i));
while (tr_sys_path_exists(walk, NULL) && !tr_sys_path_is_same(tmpdir, walk, NULL))
{
char* tmp = tr_sys_path_dirname(walk, NULL);
(*func)(walk, NULL);
tr_free(walk);
walk = tmp;
}
tr_free(walk);
}
/***
**** The local data has been removed.
**** What's left in top are empty folders, junk, and user-generated files.
**** Remove the first two categories and leave the third.
***/
/* build a list of 'top's child directories that belong to this torrent */
for (tr_file_index_t f = 0; f < tor->info.fileCount; ++f)
{
char* dir;
char* filename;
/* get the directory that this file goes in... */
filename = tr_buildPath(top, tor->info.files[f].name, NULL);
dir = tr_sys_path_dirname(filename, NULL);
tr_free(filename);
if (dir == NULL)
{
continue;
}
/* walk up the directory tree until we reach 'top' */
if (!tr_sys_path_is_same(top, dir, NULL) && strcmp(top, dir) != 0)
{
for (;;)
{
char* parent = tr_sys_path_dirname(dir, NULL);
if (tr_sys_path_is_same(top, parent, NULL) || strcmp(top, parent) == 0)
{
if (tr_ptrArrayFindSorted(&folders, dir, vstrcmp) == NULL)
{
tr_ptrArrayInsertSorted(&folders, tr_strdup(dir), vstrcmp);
}
tr_free(parent);
break;
}
/* walk upwards to parent */
tr_free(dir);
dir = parent;
}
}
tr_free(dir);
}
for (int i = 0, n = tr_ptrArraySize(&folders); i < n; ++i)
{
removeEmptyFoldersAndJunkFiles(tr_ptrArrayNth(&folders, i));
}
/* cleanup */
tr_sys_path_remove(tmpdir, NULL);
tr_free(tmpdir);
tr_ptrArrayDestruct(&folders, tr_free);
tr_ptrArrayDestruct(&files, tr_free);
}
static void tr_torrentDeleteLocalData(tr_torrent* tor, tr_fileFunc func)
{
TR_ASSERT(tr_isTorrent(tor));
if (func == NULL)
{
func = tr_sys_path_remove;
}
/* close all the files because we're about to delete them */
tr_cacheFlushTorrent(tor->session->cache, tor);
tr_fdTorrentClose(tor->session, tor->uniqueId);
deleteLocalData(tor, func);
}
/***
****
***/
struct LocationData
{
bool move_from_old_location;
int volatile* setme_state;
double volatile* setme_progress;
char* location;
tr_torrent* tor;
};
static void setLocation(void* vdata)
{
struct LocationData* data = vdata;
tr_torrent* tor = data->tor;
TR_ASSERT(tr_isTorrent(tor));
tr_torrentLock(tor);
bool err = false;
bool const do_move = data->move_from_old_location;
char const* location = data->location;
double bytesHandled = 0;
tr_logAddDebug("Moving \"%s\" location from currentDir \"%s\" to \"%s\"", tr_torrentName(tor), tor->currentDir, location);
tr_sys_dir_create(location, TR_SYS_DIR_CREATE_PARENTS, 0777, NULL);
if (!tr_sys_path_is_same(location, tor->currentDir, NULL))
{
/* bad idea to move files while they're being verified... */
tr_verifyRemove(tor);
/* try to move the files.
* FIXME: there are still all kinds of nasty cases, like what
* if the target directory runs out of space halfway through... */
for (tr_file_index_t i = 0; !err && i < tor->info.fileCount; ++i)
{
char* sub;
char const* oldbase;
tr_file const* f = &tor->info.files[i];
if (tr_torrentFindFile2(tor, i, &oldbase, &sub, NULL))
{
char* oldpath = tr_buildPath(oldbase, sub, NULL);
char* newpath = tr_buildPath(location, sub, NULL);
tr_logAddDebug("Found file #%d: %s", (int)i, oldpath);
if (do_move && !tr_sys_path_is_same(oldpath, newpath, NULL))
{
tr_error* error = NULL;
tr_logAddTorInfo(tor, "moving \"%s\" to \"%s\"", oldpath, newpath);
if (!tr_moveFile(oldpath, newpath, &error))
{
err = true;
tr_logAddTorErr(tor, "error moving \"%s\" to \"%s\": %s", oldpath, newpath, error->message);
tr_error_free(error);
}
}
tr_free(newpath);
tr_free(oldpath);
tr_free(sub);
}
if (data->setme_progress != NULL)
{
bytesHandled += f->length;
*data->setme_progress = bytesHandled / tor->info.totalSize;
}
}
if (!err && do_move)
{
/* blow away the leftover subdirectories in the old location */
tr_torrentDeleteLocalData(tor, tr_sys_path_remove);
}
}
if (!err)
{
/* set the new location and reverify */
tr_torrentSetDownloadDir(tor, location);
if (do_move)
{
tr_free(tor->incompleteDir);
tor->incompleteDir = NULL;
tor->currentDir = tor->downloadDir;
}
}
if (data->setme_state != NULL)
{
*data->setme_state = err ? TR_LOC_ERROR : TR_LOC_DONE;
}
/* cleanup */
tr_torrentUnlock(tor);
tr_free(data->location);
tr_free(data);
}
void tr_torrentSetLocation(
tr_torrent* tor,
char const* location,
bool move_from_old_location,
double volatile* setme_progress,
int volatile* setme_state)
{
TR_ASSERT(tr_isTorrent(tor));
if (setme_state != NULL)
{
*setme_state = TR_LOC_MOVING;
}
if (setme_progress != NULL)
{
*setme_progress = 0;
}
/* run this in the libtransmission thread */
struct LocationData* data = tr_new(struct LocationData, 1);
data->tor = tor;
data->location = tr_strdup(location);
data->move_from_old_location = move_from_old_location;
data->setme_state = setme_state;
data->setme_progress = setme_progress;
tr_runInEventThread(tor->session, setLocation, data);
}
char const* tr_torrentPrimaryMimeType(tr_torrent const* tor)
{
struct count
{
uint64_t length;
char const* mime_type;
};
tr_info const* inf = &tor->info;
struct count* counts = tr_new0(struct count, inf->fileCount);
size_t num_counts = 0;
for (tr_file const *it = inf->files, *end = it + inf->fileCount; it != end; ++it)
{
char const* mime_type = tr_get_mime_type_for_filename(it->name);
size_t i;
for (i = 0; i < num_counts; ++i)
{
if (counts[i].mime_type == mime_type)
{
counts[i].length += it->length;
break;
}
}
if (i == num_counts)
{
counts[i].mime_type = mime_type;
counts[i].length = it->length;
++num_counts;
}
}
uint64_t max_len = 0;
char const* mime_type = NULL;
for (struct count const *it = counts, *end = it + num_counts; it != end; ++it)
{
if ((max_len < it->length) && (it->mime_type != NULL))
{
max_len = it->length;
mime_type = it->mime_type;
}
}
tr_free(counts);
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types
// application/octet-stream is the default value for all other cases.
// An unknown file type should use this type.
return mime_type != NULL ? mime_type : "application/octet-stream";
}
/***
****
***/
static void tr_torrentFileCompleted(tr_torrent* tor, tr_file_index_t fileIndex)
{
char* sub;
char const* base;
tr_info const* inf = &tor->info;
tr_file const* f = &inf->files[fileIndex];
time_t const now = tr_time();
/* close the file so that we can reopen in read-only mode as needed */
tr_cacheFlushFile(tor->session->cache, tor, fileIndex);
tr_fdFileClose(tor->session, tor, fileIndex);
/* now that the file is complete and closed, we can start watching its
* mtime timestamp for changes to know if we need to reverify pieces */
for (tr_piece_index_t i = f->firstPiece; i <= f->lastPiece; ++i)
{
inf->pieces[i].timeChecked = now;
}
/* if the torrent's current filename isn't the same as the one in the
* metadata -- for example, if it had the ".part" suffix appended to
* it until now -- then rename it to match the one in the metadata */
if (tr_torrentFindFile2(tor, fileIndex, &base, &sub, NULL))
{
if (strcmp(sub, f->name) != 0)
{
char* oldpath = tr_buildPath(base, sub, NULL);
char* newpath = tr_buildPath(base, f->name, NULL);
tr_error* error = NULL;
if (!tr_sys_path_rename(oldpath, newpath, &error))
{
tr_logAddTorErr(tor, "Error moving \"%s\" to \"%s\": %s", oldpath, newpath, error->message);
tr_error_free(error);
}
tr_free(newpath);
tr_free(oldpath);
}
tr_free(sub);
}
}
static void tr_torrentPieceCompleted(tr_torrent* tor, tr_piece_index_t pieceIndex)
{
tr_peerMgrPieceCompleted(tor, pieceIndex);
/* if this piece completes any file, invoke the fileCompleted func for it */
for (tr_file_index_t i = 0; i < tor->info.fileCount; ++i)
{
tr_file const* file = &tor->info.files[i];
if ((file->firstPiece <= pieceIndex) && (pieceIndex <= file->lastPiece) && tr_cpFileIsComplete(&tor->completion, i))
{
tr_torrentFileCompleted(tor, i);
}
}
}
void tr_torrentGotBlock(tr_torrent* tor, tr_block_index_t block)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(tr_amInEventThread(tor->session));
bool const block_is_new = !tr_torrentBlockIsComplete(tor, block);
if (block_is_new)
{
tr_piece_index_t p;
tr_cpBlockAdd(&tor->completion, block);
tr_torrentSetDirty(tor);
p = tr_torBlockPiece(tor, block);
if (tr_torrentPieceIsComplete(tor, p))
{
tr_logAddTorDbg(tor, "[LAZY] checking just-completed piece %zu", (size_t)p);
if (tr_torrentCheckPiece(tor, p))
{
tr_torrentPieceCompleted(tor, p);
}
else
{
uint32_t const n = tr_torPieceCountBytes(tor, p);
tr_logAddTorErr(tor, _("Piece %" PRIu32 ", which was just downloaded, failed its checksum test"), p);
tor->corruptCur += n;
tor->downloadedCur -= MIN(tor->downloadedCur, n);
tr_peerMgrGotBadPiece(tor, p);
}
}
}
else
{
uint32_t const n = tr_torBlockCountBytes(tor, block);
tor->downloadedCur -= MIN(tor->downloadedCur, n);
tr_logAddTorDbg(tor, "we have this block already...");
}
}
/***
****
***/
static void find_file_in_dir(
char const* name,
char const* search_dir,
char const** base,
char const** subpath,
tr_sys_path_info* file_info)
{
char* filename = tr_buildPath(search_dir, name, NULL);
if (tr_sys_path_get_info(filename, 0, file_info, NULL))
{
*base = search_dir;
*subpath = name;
}
tr_free(filename);
}
bool tr_torrentFindFile2(tr_torrent const* tor, tr_file_index_t fileNum, char const** base, char** subpath, time_t* mtime)
{
TR_ASSERT(tr_isTorrent(tor));
TR_ASSERT(fileNum < tor->info.fileCount);
char* part = NULL;
tr_file const* file;
char const* b = NULL;
char const* s = NULL;
tr_sys_path_info file_info = { 0 };
file = &tor->info.files[fileNum];
/* look in the download dir... */
if (b == NULL)
{
find_file_in_dir(file->name, tor->downloadDir, &b, &s, &file_info);
}
/* look in the incomplete dir... */
if (b == NULL && tor->incompleteDir != NULL)
{
find_file_in_dir(file->name, tor->incompleteDir, &b, &s, &file_info);
}
if (b == NULL)
{
part = tr_torrentBuildPartial(tor, fileNum);
}
/* look for a .part file in the incomplete dir... */
if (b == NULL && tor->incompleteDir != NULL)
{
find_file_in_dir(part, tor->incompleteDir, &b, &s, &file_info);
}
/* look for a .part file in the download dir... */
if (b == NULL)
{
find_file_in_dir(part, tor->downloadDir, &b, &s, &file_info);
}
/* return the results */
if (base != NULL)
{
*base = b;
}
if (subpath != NULL)
{
*subpath = tr_strdup(s);
}
if (mtime != NULL)
{
*mtime = file_info.last_modified_at;
}
/* cleanup */
tr_free(part);
return b != NULL;
}
char* tr_torrentFindFile(tr_torrent const* tor, tr_file_index_t fileNum)
{
char* subpath;
char* ret = NULL;
char const* base;
if (tr_torrentFindFile2(tor, fileNum, &base, &subpath, NULL))
{
ret = tr_buildPath(base, subpath, NULL);
tr_free(subpath);
}
return ret;
}
/* Decide whether we should be looking for files in downloadDir or incompleteDir. */
static void refreshCurrentDir(tr_torrent* tor)
{
char const* dir = NULL;
if (tor->incompleteDir == NULL)
{
dir = tor->downloadDir;
}
else if (!tr_torrentHasMetadata(tor)) /* no files to find */
{
dir = tor->incompleteDir;
}
else if (!tr_torrentFindFile2(tor, 0, &dir, NULL, NULL))
{
dir = tor->incompleteDir;
}
TR_ASSERT(dir != NULL);
TR_ASSERT(dir == tor->downloadDir || dir == tor->incompleteDir);
tor->currentDir = dir;
}
char* tr_torrentBuildPartial(tr_torrent const* tor, tr_file_index_t fileNum)
{
return tr_strdup_printf("%s.part", tor->info.files[fileNum].name);
}
/***
****
***/
static int compareTorrentByQueuePosition(void const* va, void const* vb)
{
tr_torrent const* a = *(tr_torrent const* const*)va;
tr_torrent const* b = *(tr_torrent const* const*)vb;
return a->queuePosition - b->queuePosition;
}
#ifdef TR_ENABLE_ASSERTS
static bool queueIsSequenced(tr_session* session)
{
int n;
bool is_sequenced;
tr_torrent** torrents;
n = 0;
torrents = tr_sessionGetTorrents(session, &n);
qsort(torrents, n, sizeof(tr_torrent*), compareTorrentByQueuePosition);
#if 0
fprintf(stderr, "%s", "queue: ");
for (int i = 0; i < n; ++i)
{
fprintf(stderr, "%d ", tmp[i]->queuePosition);
}
fputc('\n', stderr);
#endif
/* test them */
is_sequenced = true;
for (int i = 0; is_sequenced && i < n; ++i)
{
is_sequenced = torrents[i]->queuePosition == i;
}
tr_free(torrents);
return is_sequenced;
}
#endif
int tr_torrentGetQueuePosition(tr_torrent const* tor)
{
return tor->queuePosition;
}
void tr_torrentSetQueuePosition(tr_torrent* tor, int pos)
{
int back = -1;
tr_torrent* walk;
int const old_pos = tor->queuePosition;
time_t const now = tr_time();
if (pos < 0)
{
pos = 0;
}
tor->queuePosition = -1;
walk = NULL;
while ((walk = tr_torrentNext(tor->session, walk)) != NULL)
{
if ((old_pos < pos) && (old_pos <= walk->queuePosition) && (walk->queuePosition <= pos))
{
walk->queuePosition--;
walk->anyDate = now;
}
if ((old_pos > pos) && (pos <= walk->queuePosition) && (walk->queuePosition < old_pos))
{
walk->queuePosition++;
walk->anyDate = now;
}
if (back < walk->queuePosition)
{
back = walk->queuePosition;
}
}
tor->queuePosition = MIN(pos, back + 1);
tor->anyDate = now;
TR_ASSERT(queueIsSequenced(tor->session));
}
void tr_torrentsQueueMoveTop(tr_torrent** torrents_in, int n)
{
tr_torrent** torrents = tr_memdup(torrents_in, sizeof(tr_torrent*) * n);
qsort(torrents, n, sizeof(tr_torrent*), compareTorrentByQueuePosition);
for (int i = n - 1; i >= 0; --i)
{
tr_torrentSetQueuePosition(torrents[i], 0);
}
tr_free(torrents);
}
void tr_torrentsQueueMoveUp(tr_torrent** torrents_in, int n)
{
tr_torrent** torrents;
torrents = tr_memdup(torrents_in, sizeof(tr_torrent*) * n);
qsort(torrents, n, sizeof(tr_torrent*), compareTorrentByQueuePosition);
for (int i = 0; i < n; ++i)
{
tr_torrentSetQueuePosition(torrents[i], torrents[i]->queuePosition - 1);
}
tr_free(torrents);
}
void tr_torrentsQueueMoveDown(tr_torrent** torrents_in, int n)
{
tr_torrent** torrents;
torrents = tr_memdup(torrents_in, sizeof(tr_torrent*) * n);
qsort(torrents, n, sizeof(tr_torrent*), compareTorrentByQueuePosition);
for (int i = n - 1; i >= 0; --i)
{
tr_torrentSetQueuePosition(torrents[i], torrents[i]->queuePosition + 1);
}
tr_free(torrents);
}
void tr_torrentsQueueMoveBottom(tr_torrent** torrents_in, int n)
{
tr_torrent** torrents;
torrents = tr_memdup(torrents_in, sizeof(tr_torrent*) * n);
qsort(torrents, n, sizeof(tr_torrent*), compareTorrentByQueuePosition);
for (int i = 0; i < n; ++i)
{
tr_torrentSetQueuePosition(torrents[i], INT_MAX);
}
tr_free(torrents);
}
static void torrentSetQueued(tr_torrent* tor, bool queued)
{
TR_ASSERT(tr_isTorrent(tor));
if (tr_torrentIsQueued(tor) != queued)
{
tor->isQueued = queued;
tor->anyDate = tr_time();
tr_torrentSetDirty(tor);
}
}
void tr_torrentSetQueueStartCallback(tr_torrent* torrent, void (*callback)(tr_torrent*, void*), void* user_data)
{
torrent->queue_started_callback = callback;
torrent->queue_started_user_data = user_data;
}
/***
****
**** RENAME
****
***/
static bool renameArgsAreValid(char const* oldpath, char const* newname)
{
return !tr_str_is_empty(oldpath) && !tr_str_is_empty(newname) && strcmp(newname, ".") != 0 && strcmp(newname, "..") != 0 &&
strchr(newname, TR_PATH_DELIMITER) == NULL;
}
static tr_file_index_t* renameFindAffectedFiles(tr_torrent* tor, char const* oldpath, size_t* setme_n)
{
size_t n;
size_t oldpath_len;
tr_file_index_t* indices = tr_new0(tr_file_index_t, tor->info.fileCount);
n = 0;
oldpath_len = strlen(oldpath);
for (tr_file_index_t i = 0; i < tor->info.fileCount; ++i)
{
char const* name = tor->info.files[i].name;
size_t const len = strlen(name);
if ((len == oldpath_len || (len > oldpath_len && name[oldpath_len] == '/')) && memcmp(oldpath, name, oldpath_len) == 0)
{
indices[n++] = i;
}
}
*setme_n = n;
return indices;
}
static int renamePath(tr_torrent* tor, char const* oldpath, char const* newname)
{
char* src;
char const* base;
int err = 0;
if (!tr_torrentIsSeed(tor) && tor->incompleteDir != NULL)
{
base = tor->incompleteDir;
}
else
{
base = tor->downloadDir;
}
src = tr_buildPath(base, oldpath, NULL);
if (!tr_sys_path_exists(src, NULL)) /* check for it as a partial */
{
char* tmp = tr_strdup_printf("%s.part", src);
tr_free(src);
src = tmp;
}
if (tr_sys_path_exists(src, NULL))
{
int tmp;
bool tgt_exists;
char* parent = tr_sys_path_dirname(src, NULL);
char* tgt;
if (tr_str_has_suffix(src, ".part"))
{
tgt = tr_strdup_printf("%s" TR_PATH_DELIMITER_STR "%s.part", parent, newname);
}
else
{
tgt = tr_buildPath(parent, newname, NULL);
}
tmp = errno;
tgt_exists = tr_sys_path_exists(tgt, NULL);
errno = tmp;
if (!tgt_exists)
{
tr_error* error = NULL;
tmp = errno;
if (!tr_sys_path_rename(src, tgt, &error))
{
err = error->code;
tr_error_free(error);
}
errno = tmp;
}
tr_free(tgt);
tr_free(parent);
}
tr_free(src);
return err;
}
static void renameTorrentFileString(tr_torrent* tor, char const* oldpath, char const* newname, tr_file_index_t fileIndex)
{
char* name;
tr_file* file = &tor->info.files[fileIndex];
size_t const oldpath_len = strlen(oldpath);
if (strchr(oldpath, TR_PATH_DELIMITER) == NULL)
{
if (oldpath_len >= strlen(file->name))
{
name = tr_buildPath(newname, NULL);
}
else
{
name = tr_buildPath(newname, file->name + oldpath_len + 1, NULL);
}
}
else
{
char* tmp = tr_sys_path_dirname(oldpath, NULL);
if (tmp == NULL)
{
return;
}
if (oldpath_len >= strlen(file->name))
{
name = tr_buildPath(tmp, newname, NULL);
}
else
{
name = tr_buildPath(tmp, newname, file->name + oldpath_len + 1, NULL);
}
tr_free(tmp);
}
if (strcmp(file->name, name) == 0)
{
tr_free(name);
}
else
{
tr_free(file->name);
file->name = name;
file->is_renamed = true;
}
}
struct rename_data
{
tr_torrent* tor;
char* oldpath;
char* newname;
tr_torrent_rename_done_func callback;
void* callback_user_data;
};
static void torrentRenamePath(void* vdata)
{
struct rename_data* data = vdata;
tr_torrent* const tor = data->tor;
TR_ASSERT(tr_isTorrent(tor));
/***
****
***/
int error = 0;
char const* const oldpath = data->oldpath;
char const* const newname = data->newname;
if (!renameArgsAreValid(oldpath, newname))
{
error = EINVAL;
}
else
{
size_t n;
tr_file_index_t* file_indices;
file_indices = renameFindAffectedFiles(tor, oldpath, &n);
if (n == 0)
{
error = EINVAL;
}
else
{
error = renamePath(tor, oldpath, newname);
if (error == 0)
{
/* update tr_info.files */
for (size_t i = 0; i < n; ++i)
{
renameTorrentFileString(tor, oldpath, newname, file_indices[i]);
}
/* update tr_info.name if user changed the toplevel */
if (n == tor->info.fileCount && strchr(oldpath, '/') == NULL)
{
tr_free(tor->info.name);
tor->info.name = tr_strdup(newname);
}
tr_torrentMarkEdited(tor);
tr_torrentSetDirty(tor);
}
}
tr_free(file_indices);
}
/***
****
***/
tor->anyDate = tr_time();
/* callback */
if (data->callback != NULL)
{
(*data->callback)(tor, data->oldpath, data->newname, error, data->callback_user_data);
}
/* cleanup */
tr_free(data->oldpath);
tr_free(data->newname);
tr_free(data);
}
void tr_torrentRenamePath(
tr_torrent* tor,
char const* oldpath,
char const* newname,
tr_torrent_rename_done_func callback,
void* callback_user_data)
{
struct rename_data* data;
data = tr_new0(struct rename_data, 1);
data->tor = tor;
data->oldpath = tr_strdup(oldpath);
data->newname = tr_strdup(newname);
data->callback = callback;
data->callback_user_data = callback_user_data;
tr_runInEventThread(tor->session, torrentRenamePath, data);
}
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