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transmission/libtransmission/torrent-ctor.c

255 lines
6.1 KiB
C

/*
* This file Copyright (C) 2007-2008 Charles Kerr <charles@rebelbase.com>
*
* 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 <libgen.h> /* basename */
#include "transmission.h"
#include "bencode.h"
#include "platform.h"
#include "trcompat.h" /* strlcpy */
#include "utils.h"
#define DEFAULT_MAX_CONNECTED_PEERS 50
struct optional_args
{
unsigned int isSet_paused : 1;
unsigned int isSet_connected : 1;
unsigned int isSet_destination : 1;
unsigned int isPaused : 1;
uint16_t maxConnectedPeers;
char destination[MAX_PATH_LENGTH];
};
struct tr_ctor
{
const tr_handle * handle;
unsigned int saveInOurTorrentsDir : 1;
unsigned int isSet_metainfo : 1;
benc_val_t metainfo;
struct optional_args optionalArgs[2];
};
/***
****
***/
static void
clearMetainfo( tr_ctor * ctor )
{
if( ctor->isSet_metainfo ) {
ctor->isSet_metainfo = 0;
tr_bencFree( &ctor->metainfo );
}
}
int
tr_ctorSetMetainfo( tr_ctor * ctor,
const uint8_t * metainfo,
size_t len )
{
int err;
clearMetainfo( ctor );
err = tr_bencLoad( metainfo, len, &ctor->metainfo, NULL );
ctor->isSet_metainfo = !err;
return err;
}
int
tr_ctorSetMetainfoFromFile( tr_ctor * ctor,
const char * filename )
{
uint8_t * metainfo;
size_t len;
int err;
metainfo = tr_loadFile( filename, &len );
if( metainfo && len )
err = tr_ctorSetMetainfo( ctor, metainfo, len );
else {
clearMetainfo( ctor );
err = 1;
}
/* if no `name' field was set, then set it from the filename */
if( ctor->isSet_metainfo ) {
benc_val_t * info = tr_bencDictFindType( &ctor->metainfo, "info", TYPE_DICT );
if( info != NULL ) {
benc_val_t * name = tr_bencDictFindFirst( info, "name.utf-8", "name", NULL );
if( name == NULL )
name = tr_bencDictAdd( info, "name" );
if( name->type!=TYPE_STR || !name->val.s.s || !*name->val.s.s ) {
char * tmp = tr_strdup( filename );
tr_bencInitStrDup( name, basename( tmp ) );
tr_free( tmp );
}
}
}
tr_free( metainfo );
return err;
}
int
tr_ctorSetMetainfoFromHash( tr_ctor * ctor,
const char * hashString )
{
int err = -1;
char basename[2048];
char filename[MAX_PATH_LENGTH];
if( err && ( ctor->handle->tag != NULL ) ) {
snprintf( basename, sizeof(basename), "%s-%s", hashString, ctor->handle->tag );
tr_buildPath( filename, sizeof(filename), tr_getTorrentsDirectory(), basename, NULL );
err = tr_ctorSetMetainfoFromFile( ctor, filename );
}
if( err ) {
tr_buildPath( filename, sizeof(filename), tr_getTorrentsDirectory(), hashString, NULL );
err = tr_ctorSetMetainfoFromFile( ctor, filename );
}
return err;
}
/***
****
***/
void
tr_ctorSetSave( tr_ctor * ctor,
int saveInOurTorrentsDir )
{
ctor->saveInOurTorrentsDir = saveInOurTorrentsDir ? 1 : 0;
}
int
tr_ctorGetSave( const tr_ctor * ctor )
{
return ctor && ctor->saveInOurTorrentsDir;
}
void
tr_ctorSetPaused( tr_ctor * ctor,
tr_ctorMode mode,
uint8_t isPaused )
{
struct optional_args * args = &ctor->optionalArgs[mode];
args->isSet_paused = 1;
args->isPaused = isPaused ? 1 : 0;
}
void
tr_ctorSetMaxConnectedPeers( tr_ctor * ctor,
tr_ctorMode mode,
uint16_t maxConnectedPeers )
{
struct optional_args * args = &ctor->optionalArgs[mode];
args->isSet_connected = 1;
args->maxConnectedPeers = maxConnectedPeers;
}
void
tr_ctorSetDestination( tr_ctor * ctor,
tr_ctorMode mode,
const char * directory )
{
struct optional_args * args = &ctor->optionalArgs[mode];
args->isSet_destination = 1;
strlcpy( args->destination, directory, sizeof( args->destination ) );
}
int
tr_ctorGetMaxConnectedPeers( const tr_ctor * ctor,
tr_ctorMode mode,
uint16_t * setmeCount )
{
int err = 0;
const struct optional_args * args = &ctor->optionalArgs[mode];
if( args->isSet_connected )
*setmeCount = args->maxConnectedPeers;
else
err = 1;
return err;
}
int
tr_ctorGetIsPaused( const tr_ctor * ctor,
tr_ctorMode mode,
uint8_t * setmeIsPaused )
{
int err = 0;
const struct optional_args * args = &ctor->optionalArgs[mode];
if( args->isSet_paused )
*setmeIsPaused = args->isPaused ? 1 : 0;
else
err = 1;
return err;
}
int
tr_ctorGetDestination( const tr_ctor * ctor,
tr_ctorMode mode,
const char ** setmeDestination )
{
int err = 0;
const struct optional_args * args = &ctor->optionalArgs[mode];
if( args->isSet_destination )
*setmeDestination = args->destination;
else
err = 1;
return err;
}
int
tr_ctorGetMetainfo( const tr_ctor * ctor,
const struct benc_val_s ** setme )
{
int err = 0;
if( ctor->isSet_metainfo )
*setme = &ctor->metainfo;
else
err = 1;
return err;
}
/***
****
***/
tr_ctor*
tr_ctorNew( const tr_handle * handle )
{
tr_ctor * ctor = tr_new0( struct tr_ctor, 1 );
ctor->handle = handle;
tr_ctorSetMaxConnectedPeers( ctor, TR_FALLBACK, DEFAULT_MAX_CONNECTED_PEERS );
tr_ctorSetPaused( ctor, TR_FALLBACK, FALSE );
tr_ctorSetSave( ctor, TRUE );
return ctor;
}
void
tr_ctorFree( tr_ctor * ctor )
{
clearMetainfo( ctor );
tr_free( ctor );
}