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transmission/libtransmission/resume.c

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/*
* This file Copyright (C) 2008-2010 Mnemosyne LLC
*
* This file is licensed by the GPL version 2. Works owned by the
* Transmission project are granted a special exemption to clause 2(b)
* so that the bulk of its code can remain under the MIT license.
* This exemption does not extend to derived works not owned by
* the Transmission project.
*
* $Id$
*/
#include <unistd.h> /* unlink */
#include <string.h>
#include "transmission.h"
#include "bencode.h"
#include "completion.h"
#include "metainfo.h" /* tr_metainfoGetBasename() */
#include "peer-mgr.h" /* pex */
#include "platform.h" /* tr_getResumeDir() */
#include "resume.h"
#include "session.h"
#include "torrent.h"
#include "utils.h" /* tr_buildPath */
#define KEY_ACTIVITY_DATE "activity-date"
#define KEY_ADDED_DATE "added-date"
#define KEY_CORRUPT "corrupt"
#define KEY_DONE_DATE "done-date"
#define KEY_DOWNLOAD_DIR "destination"
#define KEY_DND "dnd"
#define KEY_DOWNLOADED "downloaded"
#define KEY_INCOMPLETE_DIR "incomplete-dir"
#define KEY_MAX_PEERS "max-peers"
#define KEY_PAUSED "paused"
#define KEY_PEERS "peers2"
#define KEY_PEERS6 "peers2-6"
#define KEY_FILE_PRIORITIES "priority"
#define KEY_BANDWIDTH_PRIORITY "bandwidth-priority"
#define KEY_PROGRESS "progress"
#define KEY_SPEEDLIMIT_OLD "speed-limit"
#define KEY_SPEEDLIMIT_UP "speed-limit-up"
#define KEY_SPEEDLIMIT_DOWN "speed-limit-down"
#define KEY_RATIOLIMIT "ratio-limit"
#define KEY_IDLELIMIT "idle-limit"
#define KEY_UPLOADED "uploaded"
#define KEY_SPEED_KiBps "speed"
#define KEY_SPEED_Bps "speed-Bps"
#define KEY_USE_GLOBAL_SPEED_LIMIT "use-global-speed-limit"
#define KEY_USE_SPEED_LIMIT "use-speed-limit"
#define KEY_TIME_SEEDING "seeding-time-seconds"
#define KEY_TIME_DOWNLOADING "downloading-time-seconds"
#define KEY_SPEEDLIMIT_DOWN_SPEED "down-speed"
#define KEY_SPEEDLIMIT_DOWN_MODE "down-mode"
#define KEY_SPEEDLIMIT_UP_SPEED "up-speed"
#define KEY_SPEEDLIMIT_UP_MODE "up-mode"
#define KEY_RATIOLIMIT_RATIO "ratio-limit"
#define KEY_RATIOLIMIT_MODE "ratio-mode"
#define KEY_IDLELIMIT_MINS "idle-limit"
#define KEY_IDLELIMIT_MODE "idle-mode"
#define KEY_PROGRESS_CHECKTIME "time-checked"
#define KEY_PROGRESS_BITFIELD "bitfield"
#define KEY_PROGRESS_HAVE "have"
enum
{
MAX_REMEMBERED_PEERS = 200
};
static char*
getResumeFilename( const tr_torrent * tor )
{
char * base = tr_metainfoGetBasename( tr_torrentInfo( tor ) );
char * filename = tr_strdup_printf( "%s" TR_PATH_DELIMITER_STR "%s.resume",
tr_getResumeDir( tor->session ), base );
tr_free( base );
return filename;
}
/***
****
***/
static void
savePeers( tr_benc * dict, const tr_torrent * tor )
{
int count;
tr_pex * pex;
count = tr_peerMgrGetPeers( (tr_torrent*) tor, &pex, TR_AF_INET, TR_PEERS_ALL, MAX_REMEMBERED_PEERS );
if( count > 0 )
tr_bencDictAddRaw( dict, KEY_PEERS, pex, sizeof( tr_pex ) * count );
tr_free( pex );
count = tr_peerMgrGetPeers( (tr_torrent*) tor, &pex, TR_AF_INET6, TR_PEERS_ALL, MAX_REMEMBERED_PEERS );
if( count > 0 )
tr_bencDictAddRaw( dict, KEY_PEERS6, pex, sizeof( tr_pex ) * count );
tr_free( pex );
}
static tr_bool
tr_isPex( const tr_pex * pex )
{
return tr_isAddress( &pex->addr )
&& ( pex->flags & 3 ) == pex->flags;
}
static int
addPeers( tr_torrent * tor, const uint8_t * buf, int buflen )
{
int i;
int numAdded = 0;
const int count = buflen / sizeof( tr_pex );
for( i=0; i<count && numAdded<MAX_REMEMBERED_PEERS; ++i )
{
tr_pex pex;
memcpy( &pex, buf + ( i * sizeof( tr_pex ) ), sizeof( tr_pex ) );
if( tr_isPex( &pex ) )
{
tr_peerMgrAddPex( tor, TR_PEER_FROM_RESUME, &pex, -1 );
++numAdded;
}
}
return numAdded;
}
static uint64_t
loadPeers( tr_benc * dict, tr_torrent * tor )
{
uint64_t ret = 0;
const uint8_t * str;
size_t len;
if( tr_bencDictFindRaw( dict, KEY_PEERS, &str, &len ) )
{
const int numAdded = addPeers( tor, str, len );
tr_tordbg( tor, "Loaded %d IPv4 peers from resume file", numAdded );
ret = TR_FR_PEERS;
}
if( tr_bencDictFindRaw( dict, KEY_PEERS6, &str, &len ) )
{
const int numAdded = addPeers( tor, str, len );
tr_tordbg( tor, "Loaded %d IPv6 peers from resume file", numAdded );
ret = TR_FR_PEERS;
}
return ret;
}
/***
****
***/
static void
saveDND( tr_benc * dict,
const tr_torrent * tor )
{
const tr_info * inf = tr_torrentInfo( tor );
const tr_file_index_t n = inf->fileCount;
tr_file_index_t i;
tr_benc * list;
list = tr_bencDictAddList( dict, KEY_DND, n );
for( i = 0; i < n; ++i )
tr_bencListAddInt( list, inf->files[i].dnd ? 1 : 0 );
}
static uint64_t
loadDND( tr_benc * dict,
tr_torrent * tor )
{
uint64_t ret = 0;
tr_info * inf = &tor->info;
const tr_file_index_t n = inf->fileCount;
tr_benc * list = NULL;
if( tr_bencDictFindList( dict, KEY_DND, &list )
&& ( tr_bencListSize( list ) == n ) )
{
int64_t tmp;
tr_file_index_t * dl = tr_new( tr_file_index_t, n );
tr_file_index_t * dnd = tr_new( tr_file_index_t, n );
tr_file_index_t i, dlCount = 0, dndCount = 0;
for( i = 0; i < n; ++i )
{
if( tr_bencGetInt( tr_bencListChild( list, i ), &tmp ) && tmp )
dnd[dndCount++] = i;
else
dl[dlCount++] = i;
}
if( dndCount )
{
tr_torrentInitFileDLs ( tor, dnd, dndCount, FALSE );
tr_tordbg( tor, "Resume file found %d files listed as dnd",
dndCount );
}
if( dlCount )
{
tr_torrentInitFileDLs ( tor, dl, dlCount, TRUE );
tr_tordbg( tor,
"Resume file found %d files marked for download",
dlCount );
}
tr_free( dnd );
tr_free( dl );
ret = TR_FR_DND;
}
else
{
tr_tordbg(
tor,
"Couldn't load DND flags. DND list (%p) has %zu children; torrent has %d files",
list, tr_bencListSize( list ), (int)n );
}
return ret;
}
/***
****
***/
static void
saveFilePriorities( tr_benc * dict, const tr_torrent * tor )
{
const tr_info * inf = tr_torrentInfo( tor );
const tr_file_index_t n = inf->fileCount;
tr_file_index_t i;
tr_benc * list;
list = tr_bencDictAddList( dict, KEY_FILE_PRIORITIES, n );
for( i = 0; i < n; ++i )
tr_bencListAddInt( list, inf->files[i].priority );
}
static uint64_t
loadFilePriorities( tr_benc * dict, tr_torrent * tor )
{
uint64_t ret = 0;
tr_info * inf = &tor->info;
const tr_file_index_t n = inf->fileCount;
tr_benc * list;
if( tr_bencDictFindList( dict, KEY_FILE_PRIORITIES, &list )
&& ( tr_bencListSize( list ) == n ) )
{
int64_t priority;
tr_file_index_t i;
for( i = 0; i < n; ++i )
if( tr_bencGetInt( tr_bencListChild( list, i ), &priority ) )
tr_torrentInitFilePriority( tor, i, priority );
ret = TR_FR_FILE_PRIORITIES;
}
return ret;
}
/***
****
***/
static void
saveSingleSpeedLimit( tr_benc * d, const tr_torrent * tor, tr_direction dir )
{
tr_bencDictReserve( d, 3 );
tr_bencDictAddInt( d, KEY_SPEED_Bps, tr_torrentGetSpeedLimit_Bps( tor, dir ) );
tr_bencDictAddBool( d, KEY_USE_GLOBAL_SPEED_LIMIT, tr_torrentUsesSessionLimits( tor ) );
tr_bencDictAddBool( d, KEY_USE_SPEED_LIMIT, tr_torrentUsesSpeedLimit( tor, dir ) );
}
static void
saveSpeedLimits( tr_benc * dict, const tr_torrent * tor )
{
saveSingleSpeedLimit( tr_bencDictAddDict( dict, KEY_SPEEDLIMIT_DOWN, 0 ), tor, TR_DOWN );
saveSingleSpeedLimit( tr_bencDictAddDict( dict, KEY_SPEEDLIMIT_UP, 0 ), tor, TR_UP );
}
static void
saveRatioLimits( tr_benc * dict, const tr_torrent * tor )
{
tr_benc * d = tr_bencDictAddDict( dict, KEY_RATIOLIMIT, 2 );
tr_bencDictAddReal( d, KEY_RATIOLIMIT_RATIO, tr_torrentGetRatioLimit( tor ) );
tr_bencDictAddInt( d, KEY_RATIOLIMIT_MODE, tr_torrentGetRatioMode( tor ) );
}
static void
saveIdleLimits( tr_benc * dict, const tr_torrent * tor )
{
tr_benc * d = tr_bencDictAddDict( dict, KEY_IDLELIMIT, 2 );
tr_bencDictAddInt( d, KEY_IDLELIMIT_MINS, tr_torrentGetIdleLimit( tor ) );
tr_bencDictAddInt( d, KEY_IDLELIMIT_MODE, tr_torrentGetIdleMode( tor ) );
}
static void
loadSingleSpeedLimit( tr_benc * d, tr_direction dir, tr_torrent * tor )
{
int64_t i;
tr_bool boolVal;
if( tr_bencDictFindInt( d, KEY_SPEED_Bps, &i ) )
tr_torrentSetSpeedLimit_Bps( tor, dir, i );
else if( tr_bencDictFindInt( d, KEY_SPEED_KiBps, &i ) )
tr_torrentSetSpeedLimit_Bps( tor, dir, i*1024 );
if( tr_bencDictFindBool( d, KEY_USE_SPEED_LIMIT, &boolVal ) )
tr_torrentUseSpeedLimit( tor, dir, boolVal );
if( tr_bencDictFindBool( d, KEY_USE_GLOBAL_SPEED_LIMIT, &boolVal ) )
tr_torrentUseSessionLimits( tor, boolVal );
}
enum old_speed_modes
{
TR_SPEEDLIMIT_GLOBAL, /* only follow the overall speed limit */
TR_SPEEDLIMIT_SINGLE /* only follow the per-torrent limit */
};
static uint64_t
loadSpeedLimits( tr_benc * dict, tr_torrent * tor )
{
uint64_t ret = 0;
tr_benc * d;
if( tr_bencDictFindDict( dict, KEY_SPEEDLIMIT_UP, &d ) )
{
loadSingleSpeedLimit( d, TR_UP, tor );
ret = TR_FR_SPEEDLIMIT;
}
if( tr_bencDictFindDict( dict, KEY_SPEEDLIMIT_DOWN, &d ) )
{
loadSingleSpeedLimit( d, TR_DOWN, tor );
ret = TR_FR_SPEEDLIMIT;
}
/* older speedlimit structure */
if( !ret && tr_bencDictFindDict( dict, KEY_SPEEDLIMIT_OLD, &d ) )
{
int64_t i;
if( tr_bencDictFindInt( d, KEY_SPEEDLIMIT_DOWN_SPEED, &i ) )
tr_torrentSetSpeedLimit_Bps( tor, TR_DOWN, i*1024 );
if( tr_bencDictFindInt( d, KEY_SPEEDLIMIT_DOWN_MODE, &i ) ) {
tr_torrentUseSpeedLimit( tor, TR_DOWN, i==TR_SPEEDLIMIT_SINGLE );
tr_torrentUseSessionLimits( tor, i==TR_SPEEDLIMIT_GLOBAL );
}
if( tr_bencDictFindInt( d, KEY_SPEEDLIMIT_UP_SPEED, &i ) )
tr_torrentSetSpeedLimit_Bps( tor, TR_UP, i*1024 );
if( tr_bencDictFindInt( d, KEY_SPEEDLIMIT_UP_MODE, &i ) ) {
tr_torrentUseSpeedLimit( tor, TR_UP, i==TR_SPEEDLIMIT_SINGLE );
tr_torrentUseSessionLimits( tor, i==TR_SPEEDLIMIT_GLOBAL );
}
ret = TR_FR_SPEEDLIMIT;
}
return ret;
}
static uint64_t
loadRatioLimits( tr_benc * dict,
tr_torrent * tor )
{
uint64_t ret = 0;
tr_benc * d;
if( tr_bencDictFindDict( dict, KEY_RATIOLIMIT, &d ) )
{
int64_t i;
double dratio;
if( tr_bencDictFindReal( d, KEY_RATIOLIMIT_RATIO, &dratio ) )
tr_torrentSetRatioLimit( tor, dratio );
if( tr_bencDictFindInt( d, KEY_RATIOLIMIT_MODE, &i ) )
tr_torrentSetRatioMode( tor, i );
ret = TR_FR_RATIOLIMIT;
}
return ret;
}
static uint64_t
loadIdleLimits( tr_benc * dict,
tr_torrent * tor )
{
uint64_t ret = 0;
tr_benc * d;
if( tr_bencDictFindDict( dict, KEY_IDLELIMIT, &d ) )
{
int64_t i;
int64_t imin;
if( tr_bencDictFindInt( d, KEY_IDLELIMIT_MINS, &imin ) )
tr_torrentSetIdleLimit( tor, imin );
if( tr_bencDictFindInt( d, KEY_IDLELIMIT_MODE, &i ) )
tr_torrentSetIdleMode( tor, i );
ret = TR_FR_IDLELIMIT;
}
return ret;
}
/***
****
***/
static void
saveProgress( tr_benc * dict,
const tr_torrent * tor )
{
size_t i, n;
tr_benc * p;
tr_benc * m;
const tr_bitfield * bitfield;
p = tr_bencDictAdd( dict, KEY_PROGRESS );
tr_bencInitDict( p, 2 );
/* add each piece's timeChecked */
n = tor->info.pieceCount;
m = tr_bencDictAddList( p, KEY_PROGRESS_CHECKTIME, n );
for( i=0; i<n; ++i )
tr_bencListAddInt( m, tor->info.pieces[i].timeChecked );
/* add the progress */
if( tor->completeness == TR_SEED )
tr_bencDictAddStr( p, KEY_PROGRESS_HAVE, "all" );
bitfield = tr_cpBlockBitfield( &tor->completion );
tr_bencDictAddRaw( p, KEY_PROGRESS_BITFIELD,
bitfield->bits, bitfield->byteCount );
}
static uint64_t
loadProgress( tr_benc * dict,
tr_torrent * tor )
{
size_t i, n;
uint64_t ret = 0;
tr_benc * p;
for( i=0, n=tor->info.pieceCount; i<n; ++i )
tor->info.pieces[i].timeChecked = 0;
if( tr_bencDictFindDict( dict, KEY_PROGRESS, &p ) )
{
const char * err;
const char * str;
const uint8_t * raw;
size_t rawlen;
tr_benc * m;
int64_t timeChecked;
/* load in the timestamp of when we last checked each piece */
if( tr_bencDictFindList( p, KEY_PROGRESS_CHECKTIME, &m ) )
for( i=0, n=tor->info.pieceCount; i<n; ++i )
if( tr_bencGetInt( tr_bencListChild( m, i ), &timeChecked ) )
tor->info.pieces[i].timeChecked = (time_t)timeChecked;
err = NULL;
if( tr_bencDictFindStr( p, KEY_PROGRESS_HAVE, &str ) )
{
if( !strcmp( str, "all" ) )
tr_cpSetHaveAll( &tor->completion );
else
err = "Invalid value for HAVE";
}
else if( tr_bencDictFindRaw( p, KEY_PROGRESS_BITFIELD, &raw, &rawlen ) )
{
tr_bitfield tmp;
tmp.byteCount = rawlen;
tmp.bitCount = tmp.byteCount * 8;
tmp.bits = (uint8_t*) raw;
if( !tr_cpBlockBitfieldSet( &tor->completion, &tmp ) )
err = "Error loading bitfield";
}
else err = "Couldn't find 'have' or 'bitfield'";
if( err != NULL )
tr_tordbg( tor, "Torrent needs to be verified - %s", err );
ret = TR_FR_PROGRESS;
}
return ret;
}
/***
****
***/
void
tr_torrentSaveResume( tr_torrent * tor )
{
int err;
tr_benc top;
char * filename;
if( !tr_isTorrent( tor ) )
return;
tr_bencInitDict( &top, 50 ); /* arbitrary "big enough" number */
tr_bencDictAddInt( &top, KEY_TIME_SEEDING, tor->secondsSeeding );
tr_bencDictAddInt( &top, KEY_TIME_DOWNLOADING, tor->secondsDownloading );
tr_bencDictAddInt( &top, KEY_ACTIVITY_DATE, tor->activityDate );
tr_bencDictAddInt( &top, KEY_ADDED_DATE, tor->addedDate );
tr_bencDictAddInt( &top, KEY_CORRUPT, tor->corruptPrev + tor->corruptCur );
tr_bencDictAddInt( &top, KEY_DONE_DATE, tor->doneDate );
tr_bencDictAddStr( &top, KEY_DOWNLOAD_DIR, tor->downloadDir );
if( tor->incompleteDir != NULL )
tr_bencDictAddStr( &top, KEY_INCOMPLETE_DIR, tor->incompleteDir );
tr_bencDictAddInt( &top, KEY_DOWNLOADED, tor->downloadedPrev + tor->downloadedCur );
tr_bencDictAddInt( &top, KEY_UPLOADED, tor->uploadedPrev + tor->uploadedCur );
tr_bencDictAddInt( &top, KEY_MAX_PEERS, tor->maxConnectedPeers );
tr_bencDictAddInt( &top, KEY_BANDWIDTH_PRIORITY, tr_torrentGetPriority( tor ) );
tr_bencDictAddBool( &top, KEY_PAUSED, !tor->isRunning );
savePeers( &top, tor );
if( tr_torrentHasMetadata( tor ) )
{
saveFilePriorities( &top, tor );
saveDND( &top, tor );
saveProgress( &top, tor );
}
saveSpeedLimits( &top, tor );
saveRatioLimits( &top, tor );
saveIdleLimits( &top, tor );
filename = getResumeFilename( tor );
if(( err = tr_bencToFile( &top, TR_FMT_BENC, filename )))
tr_torrentSetLocalError( tor, "Unable to save resume file: %s", tr_strerror( err ) );
tr_free( filename );
tr_bencFree( &top );
}
static uint64_t
loadFromFile( tr_torrent * tor,
uint64_t fieldsToLoad )
{
int64_t i;
const char * str;
uint64_t fieldsLoaded = 0;
char * filename;
tr_benc top;
tr_bool boolVal;
const tr_bool wasDirty = tor->isDirty;
assert( tr_isTorrent( tor ) );
filename = getResumeFilename( tor );
if( tr_bencLoadFile( &top, TR_FMT_BENC, filename ) )
{
tr_tordbg( tor, "Couldn't read \"%s\"", filename );
tr_free( filename );
return fieldsLoaded;
}
tr_tordbg( tor, "Read resume file \"%s\"", filename );
if( ( fieldsToLoad & TR_FR_CORRUPT )
&& tr_bencDictFindInt( &top, KEY_CORRUPT, &i ) )
{
tor->corruptPrev = i;
fieldsLoaded |= TR_FR_CORRUPT;
}
if( ( fieldsToLoad & ( TR_FR_PROGRESS | TR_FR_DOWNLOAD_DIR ) )
&& ( tr_bencDictFindStr( &top, KEY_DOWNLOAD_DIR, &str ) )
&& ( str && *str ) )
{
tr_free( tor->downloadDir );
tor->downloadDir = tr_strdup( str );
fieldsLoaded |= TR_FR_DOWNLOAD_DIR;
}
if( ( fieldsToLoad & ( TR_FR_PROGRESS | TR_FR_INCOMPLETE_DIR ) )
&& ( tr_bencDictFindStr( &top, KEY_INCOMPLETE_DIR, &str ) )
&& ( str && *str ) )
{
tr_free( tor->incompleteDir );
tor->incompleteDir = tr_strdup( str );
fieldsLoaded |= TR_FR_INCOMPLETE_DIR;
}
if( ( fieldsToLoad & TR_FR_DOWNLOADED )
&& tr_bencDictFindInt( &top, KEY_DOWNLOADED, &i ) )
{
tor->downloadedPrev = i;
fieldsLoaded |= TR_FR_DOWNLOADED;
}
if( ( fieldsToLoad & TR_FR_UPLOADED )
&& tr_bencDictFindInt( &top, KEY_UPLOADED, &i ) )
{
tor->uploadedPrev = i;
fieldsLoaded |= TR_FR_UPLOADED;
}
if( ( fieldsToLoad & TR_FR_MAX_PEERS )
&& tr_bencDictFindInt( &top, KEY_MAX_PEERS, &i ) )
{
tor->maxConnectedPeers = i;
fieldsLoaded |= TR_FR_MAX_PEERS;
}
if( ( fieldsToLoad & TR_FR_RUN )
&& tr_bencDictFindBool( &top, KEY_PAUSED, &boolVal ) )
{
tor->isRunning = !boolVal;
fieldsLoaded |= TR_FR_RUN;
}
if( ( fieldsToLoad & TR_FR_ADDED_DATE )
&& tr_bencDictFindInt( &top, KEY_ADDED_DATE, &i ) )
{
tor->addedDate = i;
fieldsLoaded |= TR_FR_ADDED_DATE;
}
if( ( fieldsToLoad & TR_FR_DONE_DATE )
&& tr_bencDictFindInt( &top, KEY_DONE_DATE, &i ) )
{
tor->doneDate = i;
fieldsLoaded |= TR_FR_DONE_DATE;
}
if( ( fieldsToLoad & TR_FR_ACTIVITY_DATE )
&& tr_bencDictFindInt( &top, KEY_ACTIVITY_DATE, &i ) )
{
tr_torrentSetActivityDate( tor, i );
fieldsLoaded |= TR_FR_ACTIVITY_DATE;
}
if( ( fieldsToLoad & TR_FR_TIME_SEEDING )
&& tr_bencDictFindInt( &top, KEY_TIME_SEEDING, &i ) )
{
tor->secondsSeeding = i;
fieldsLoaded |= TR_FR_TIME_SEEDING;
}
if( ( fieldsToLoad & TR_FR_TIME_DOWNLOADING )
&& tr_bencDictFindInt( &top, KEY_TIME_DOWNLOADING, &i ) )
{
tor->secondsDownloading = i;
fieldsLoaded |= TR_FR_TIME_DOWNLOADING;
}
if( ( fieldsToLoad & TR_FR_BANDWIDTH_PRIORITY )
&& tr_bencDictFindInt( &top, KEY_BANDWIDTH_PRIORITY, &i )
&& tr_isPriority( i ) )
{
tr_torrentSetPriority( tor, i );
fieldsLoaded |= TR_FR_BANDWIDTH_PRIORITY;
}
if( fieldsToLoad & TR_FR_PEERS )
fieldsLoaded |= loadPeers( &top, tor );
if( fieldsToLoad & TR_FR_FILE_PRIORITIES )
fieldsLoaded |= loadFilePriorities( &top, tor );
if( fieldsToLoad & TR_FR_PROGRESS )
fieldsLoaded |= loadProgress( &top, tor );
if( fieldsToLoad & TR_FR_DND )
fieldsLoaded |= loadDND( &top, tor );
if( fieldsToLoad & TR_FR_SPEEDLIMIT )
fieldsLoaded |= loadSpeedLimits( &top, tor );
if( fieldsToLoad & TR_FR_RATIOLIMIT )
fieldsLoaded |= loadRatioLimits( &top, tor );
if( fieldsToLoad & TR_FR_IDLELIMIT )
fieldsLoaded |= loadIdleLimits( &top, tor );
/* loading the resume file triggers of a lot of changes,
* but none of them needs to trigger a re-saving of the
* same resume information... */
tor->isDirty = wasDirty;
tr_bencFree( &top );
tr_free( filename );
return fieldsLoaded;
}
static uint64_t
setFromCtor( tr_torrent * tor,
uint64_t fields,
const tr_ctor * ctor,
int mode )
{
uint64_t ret = 0;
if( fields & TR_FR_RUN )
{
uint8_t isPaused;
if( !tr_ctorGetPaused( ctor, mode, &isPaused ) )
{
tor->isRunning = !isPaused;
ret |= TR_FR_RUN;
}
}
if( fields & TR_FR_MAX_PEERS )
if( !tr_ctorGetPeerLimit( ctor, mode, &tor->maxConnectedPeers ) )
ret |= TR_FR_MAX_PEERS;
if( fields & TR_FR_DOWNLOAD_DIR )
{
const char * path;
if( !tr_ctorGetDownloadDir( ctor, mode, &path ) && path && *path )
{
ret |= TR_FR_DOWNLOAD_DIR;
tr_free( tor->downloadDir );
tor->downloadDir = tr_strdup( path );
}
}
return ret;
}
static uint64_t
useManditoryFields( tr_torrent * tor,
uint64_t fields,
const tr_ctor * ctor )
{
return setFromCtor( tor, fields, ctor, TR_FORCE );
}
static uint64_t
useFallbackFields( tr_torrent * tor,
uint64_t fields,
const tr_ctor * ctor )
{
return setFromCtor( tor, fields, ctor, TR_FALLBACK );
}
uint64_t
tr_torrentLoadResume( tr_torrent * tor,
uint64_t fieldsToLoad,
const tr_ctor * ctor )
{
uint64_t ret = 0;
assert( tr_isTorrent( tor ) );
ret |= useManditoryFields( tor, fieldsToLoad, ctor );
fieldsToLoad &= ~ret;
ret |= loadFromFile( tor, fieldsToLoad );
fieldsToLoad &= ~ret;
ret |= useFallbackFields( tor, fieldsToLoad, ctor );
return ret;
}
void
tr_torrentRemoveResume( const tr_torrent * tor )
{
char * filename = getResumeFilename( tor );
unlink( filename );
tr_free( filename );
}
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