void tr_torrentSaveResume(tr_torrent* tor)
{
int err;
tr_variant top;
char* filename;
if (!tr_isTorrent(tor))
{
return;
}
tr_variantInitDict(&top, 50); /* arbitrary "big enough" number */
tr_variantDictAddInt(&top, TR_KEY_seeding_time_seconds, tor->secondsSeeding);
tr_variantDictAddInt(&top, TR_KEY_downloading_time_seconds, tor->secondsDownloading);
tr_variantDictAddInt(&top, TR_KEY_activity_date, tor->activityDate);
tr_variantDictAddInt(&top, TR_KEY_added_date, tor->addedDate);
tr_variantDictAddInt(&top, TR_KEY_corrupt, tor->corruptPrev + tor->corruptCur);
tr_variantDictAddInt(&top, TR_KEY_done_date, tor->doneDate);
tr_variantDictAddStr(&top, TR_KEY_destination, tor->downloadDir);
if (tor->incompleteDir != NULL)
{
tr_variantDictAddStr(&top, TR_KEY_incomplete_dir, tor->incompleteDir);
}
tr_variantDictAddInt(&top, TR_KEY_downloaded, tor->downloadedPrev + tor->downloadedCur);
tr_variantDictAddInt(&top, TR_KEY_uploaded, tor->uploadedPrev + tor->uploadedCur);
tr_variantDictAddInt(&top, TR_KEY_max_peers, tor->maxConnectedPeers);
tr_variantDictAddInt(&top, TR_KEY_bandwidth_priority, tr_torrentGetPriority(tor));
tr_variantDictAddBool(&top, TR_KEY_paused, !tor->isRunning && !tor->isQueued);
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);
saveFilenames(&top, tor);
saveName(&top, tor);
filename = getResumeFilename(tor);
if ((err = tr_variantToFile(&top, TR_VARIANT_FMT_BENC, filename)) != 0)
{
tr_torrentSetLocalError(tor, "Unable to save resume file: %s", tr_strerror(err));
}
tr_free(filename);
tr_variantFree(&top);
}
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 );
}
/* returns 0 on success, or an errno on failure */
static int
readOrWritePiece( tr_torrent * tor,
int ioMode,
tr_piece_index_t pieceIndex,
uint32_t pieceOffset,
uint8_t * buf,
size_t buflen )
{
int err = 0;
tr_file_index_t fileIndex;
uint64_t fileOffset;
const tr_info * info = &tor->info;
if( pieceIndex >= tor->info.pieceCount )
return EINVAL;
//if( pieceOffset + buflen > tr_torPieceCountBytes( tor, pieceIndex ) )
// return EINVAL;
tr_ioFindFileLocation( tor, pieceIndex, pieceOffset,
&fileIndex, &fileOffset );
while( buflen && !err )
{
const tr_file * file = &info->files[fileIndex];
const uint64_t bytesThisPass = MIN( buflen, file->length - fileOffset );
err = readOrWriteBytes( tor->session, tor, ioMode, fileIndex, fileOffset, buf, bytesThisPass );
buf += bytesThisPass;
buflen -= bytesThisPass;
//fprintf( stderr, "++fileIndex to %d\n", (int)fileIndex );
++fileIndex;
fileOffset = 0;
if( ( err != 0 ) && (ioMode == TR_IO_WRITE ) && ( tor->error != TR_STAT_LOCAL_ERROR ) )
{
char * path = tr_buildPath( tor->downloadDir, file->name, NULL );
tr_torrentSetLocalError( tor, "%s (%s)", tr_strerror( err ), path );
tr_free( path );
}
}
return err;
}
/* returns 0 on success, or an errno on failure */
static int
readOrWriteBytes( tr_session * session,
tr_torrent * tor,
int ioMode,
tr_file_index_t fileIndex,
uint64_t fileOffset,
void * buf,
size_t buflen )
{
const tr_info * info = &tor->info;
const tr_file * file = &info->files[fileIndex];
int fd = -1;
int err = 0;
const tr_bool doWrite = ioMode >= TR_IO_WRITE;
//if( doWrite )
// fprintf( stderr, "in file %s at offset %zu, writing %zu bytes; file length is %zu\n", file->name, (size_t)fileOffset, buflen, (size_t)file->length );
assert( fileIndex < info->fileCount );
assert( !file->length || ( fileOffset < file->length ) );
assert( fileOffset + buflen <= file->length );
if( !file->length )
return 0;
fd = tr_fdFileGetCached( session, tr_torrentId( tor ), fileIndex, doWrite );
if( fd < 0 )
{
/* the fd cache doesn't have this file...
* we'll need to open it and maybe create it */
char * subpath;
const char * base;
tr_bool fileExists;
tr_preallocation_mode preallocationMode;
fileExists = tr_torrentFindFile2( tor, fileIndex, &base, &subpath );
if( !fileExists )
{
base = tr_torrentGetCurrentDir( tor );
if( tr_sessionIsIncompleteFileNamingEnabled( tor->session ) )
subpath = tr_torrentBuildPartial( tor, fileIndex );
else
subpath = tr_strdup( file->name );
}
if( ( file->dnd ) || ( ioMode < TR_IO_WRITE ) )
preallocationMode = TR_PREALLOCATE_NONE;
else
preallocationMode = tor->session->preallocationMode;
if( ( ioMode < TR_IO_WRITE ) && !fileExists ) /* does file exist? */
{
err = ENOENT;
}
else
{
char * filename = tr_buildPath( base, subpath, NULL );
if( ( fd = tr_fdFileCheckout( session, tor->uniqueId, fileIndex, filename,
doWrite, preallocationMode, file->length ) ) < 0 )
{
err = errno;
tr_torerr( tor, "tr_fdFileCheckout failed for \"%s\": %s", filename, tr_strerror( err ) );
}
tr_free( filename );
}
if( doWrite && !err )
tr_statsFileCreated( tor->session );
tr_free( subpath );
}
if( !err )
{
/* check & see if someone deleted the file while it was in our cache */
struct stat sb;
const tr_bool file_disappeared = fstat( fd, &sb ) || sb.st_nlink < 1;
if( file_disappeared ) {
tr_torrentSetLocalError( tor, "Please Verify Local Data! A file disappeared: \"%s\"", tor->info.files[fileIndex].name );
err = ENOENT;
}
if( ioMode == TR_IO_READ ) {
const int rc = tr_pread( fd, buf, buflen, fileOffset );
if( rc < 0 ) {
err = errno;
tr_torerr( tor, "read failed for \"%s\": %s",
file->name, tr_strerror( err ) );
}
} else if( ioMode == TR_IO_PREFETCH ) {
const int rc = tr_prefetch( fd, fileOffset, buflen );
if( rc < 0 ) {
/* (don't set "err" here... it's okay for prefetch to fail) */
tr_tordbg( tor, "prefetch failed for \"%s\": %s",
file->name, tr_strerror( errno ) );
}
} else if( ioMode == TR_IO_WRITE ) {
const int rc = tr_pwrite( fd, buf, buflen, fileOffset );
if( rc < 0 ) {
err = errno;
tr_torerr( tor, "write failed for \"%s\": %s",
file->name, tr_strerror( err ) );
}
} else {
abort();
}
}
return err;
}