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transmission/libtransmission/torrent-ctor.c

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/*
* This file Copyright (C) 2009-2014 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
* $Id$
*/
#include <errno.h> /* EINVAL */
#include "transmission.h"
#include "file.h"
#include "magnet.h"
#include "session.h" /* tr_sessionFindTorrentFile () */
#include "torrent.h" /* tr_ctorGetSave () */
#include "utils.h" /* tr_new0 */
#include "variant.h"
struct optional_args
{
bool isSet_paused;
bool isSet_connected;
bool isSet_downloadDir;
bool isPaused;
uint16_t peerLimit;
char * downloadDir;
};
/** Opaque class used when instantiating torrents.
* @ingroup tr_ctor */
struct tr_ctor
{
const tr_session * session;
bool saveInOurTorrentsDir;
bool doDelete;
tr_priority_t bandwidthPriority;
bool isSet_metainfo;
bool isSet_delete;
tr_variant metainfo;
char * sourceFile;
struct optional_args optionalArgs[2];
char * cookies;
char * incompleteDir;
tr_file_index_t * want;
tr_file_index_t wantSize;
tr_file_index_t * notWant;
tr_file_index_t notWantSize;
tr_file_index_t * low;
tr_file_index_t lowSize;
tr_file_index_t * normal;
tr_file_index_t normalSize;
tr_file_index_t * high;
tr_file_index_t highSize;
};
/***
****
***/
static void
setSourceFile (tr_ctor * ctor,
const char * sourceFile)
{
tr_free (ctor->sourceFile);
ctor->sourceFile = tr_strdup (sourceFile);
}
static void
clearMetainfo (tr_ctor * ctor)
{
if (ctor->isSet_metainfo)
{
ctor->isSet_metainfo = false;
tr_variantFree (&ctor->metainfo);
}
setSourceFile (ctor, NULL);
}
int
tr_ctorSetMetainfo (tr_ctor * ctor,
const uint8_t * metainfo,
size_t len)
{
int err;
clearMetainfo (ctor);
err = tr_variantFromBenc (&ctor->metainfo, metainfo, len);
ctor->isSet_metainfo = !err;
return err;
}
const char*
tr_ctorGetSourceFile (const tr_ctor * ctor)
{
return ctor->sourceFile;
}
int
tr_ctorSetMetainfoFromMagnetLink (tr_ctor * ctor, const char * magnet_link)
{
int err;
tr_magnet_info * magnet_info = tr_magnetParse (magnet_link);
if (magnet_info == NULL)
err = -1;
else {
int len;
tr_variant tmp;
char * str;
tr_magnetCreateMetainfo (magnet_info, &tmp);
str = tr_variantToStr (&tmp, TR_VARIANT_FMT_BENC, &len);
err = tr_ctorSetMetainfo (ctor, (const uint8_t*)str, len);
tr_free (str);
tr_variantFree (&tmp);
tr_magnetFree (magnet_info);
}
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;
}
setSourceFile (ctor, filename);
/* if no `name' field was set, then set it from the filename */
if (ctor->isSet_metainfo)
{
tr_variant * info;
if (tr_variantDictFindDict (&ctor->metainfo, TR_KEY_info, &info))
{
const char * name;
if (!tr_variantDictFindStr (info, TR_KEY_name_utf_8, &name, NULL))
if (!tr_variantDictFindStr (info, TR_KEY_name, &name, NULL))
name = NULL;
if (!name || !*name)
{
char * base = tr_sys_path_basename (filename, NULL);
tr_variantDictAddStr (info, TR_KEY_name, base);
tr_free (base);
}
}
}
tr_free (metainfo);
return err;
}
int
tr_ctorSetMetainfoFromHash (tr_ctor * ctor,
const char * hashString)
{
int err;
const char * filename;
filename = tr_sessionFindTorrentFile (ctor->session, hashString);
if (!filename)
err = EINVAL;
else
err = tr_ctorSetMetainfoFromFile (ctor, filename);
return err;
}
/***
****
***/
void
tr_ctorSetFilePriorities (tr_ctor * ctor,
const tr_file_index_t * files,
tr_file_index_t fileCount,
tr_priority_t priority)
{
tr_file_index_t ** myfiles;
tr_file_index_t * mycount;
switch (priority) {
case TR_PRI_LOW: myfiles = &ctor->low; mycount = &ctor->lowSize; break;
case TR_PRI_HIGH: myfiles = &ctor->high; mycount = &ctor->highSize; break;
default /*TR_PRI_NORMAL*/: myfiles = &ctor->normal; mycount = &ctor->normalSize; break;
}
tr_free (*myfiles);
*myfiles = tr_memdup (files, sizeof (tr_file_index_t)*fileCount);
*mycount = fileCount;
}
void
tr_ctorInitTorrentPriorities (const tr_ctor * ctor, tr_torrent * tor)
{
tr_file_index_t i;
for (i=0; i<ctor->lowSize; ++i)
tr_torrentInitFilePriority (tor, ctor->low[i], TR_PRI_LOW);
for (i=0; i<ctor->normalSize; ++i)
tr_torrentInitFilePriority (tor, ctor->normal[i], TR_PRI_NORMAL);
for (i=0; i<ctor->highSize; ++i)
tr_torrentInitFilePriority (tor, ctor->high[i], TR_PRI_HIGH);
}
void
tr_ctorSetFilesWanted (tr_ctor * ctor,
const tr_file_index_t * files,
tr_file_index_t fileCount,
bool wanted)
{
tr_file_index_t ** myfiles = wanted ? &ctor->want : &ctor->notWant;
tr_file_index_t * mycount = wanted ? &ctor->wantSize : &ctor->notWantSize;
tr_free (*myfiles);
*myfiles = tr_memdup (files, sizeof (tr_file_index_t)*fileCount);
*mycount = fileCount;
}
void
tr_ctorInitTorrentWanted (const tr_ctor * ctor, tr_torrent * tor)
{
if (ctor->notWantSize)
tr_torrentInitFileDLs (tor, ctor->notWant, ctor->notWantSize, false);
if (ctor->wantSize)
tr_torrentInitFileDLs (tor, ctor->want, ctor->wantSize, true);
}
/***
****
***/
void
tr_ctorSetDeleteSource (tr_ctor * ctor, bool deleteSource)
{
assert (tr_isBool (deleteSource));
ctor->doDelete = deleteSource;
ctor->isSet_delete = true;
}
int
tr_ctorGetDeleteSource (const tr_ctor * ctor, bool * setme)
{
int err = 0;
if (!ctor->isSet_delete)
err = 1;
else if (setme)
*setme = ctor->doDelete ? 1 : 0;
return err;
}
/***
****
***/
void
tr_ctorSetSave (tr_ctor * ctor, bool saveInOurTorrentsDir)
{
assert (tr_isBool (saveInOurTorrentsDir));
ctor->saveInOurTorrentsDir = saveInOurTorrentsDir;
}
int
tr_ctorGetSave (const tr_ctor * ctor)
{
return ctor && ctor->saveInOurTorrentsDir;
}
void
tr_ctorSetPaused (tr_ctor * ctor,
tr_ctorMode mode,
bool isPaused)
{
struct optional_args * args;
assert (ctor != NULL);
assert ((mode == TR_FALLBACK) || (mode == TR_FORCE));
assert (tr_isBool (isPaused));
args = &ctor->optionalArgs[mode];
args->isSet_paused = true;
args->isPaused = isPaused;
}
void
tr_ctorSetPeerLimit (tr_ctor * ctor,
tr_ctorMode mode,
uint16_t peerLimit)
{
struct optional_args * args;
assert (ctor != NULL);
assert ((mode == TR_FALLBACK) || (mode == TR_FORCE));
args = &ctor->optionalArgs[mode];
args->isSet_connected = true;
args->peerLimit = peerLimit;
}
void
tr_ctorSetDownloadDir (tr_ctor * ctor,
tr_ctorMode mode,
const char * directory)
{
struct optional_args * args;
assert (ctor != NULL);
assert ((mode == TR_FALLBACK) || (mode == TR_FORCE));
args = &ctor->optionalArgs[mode];
tr_free (args->downloadDir);
args->downloadDir = NULL;
args->isSet_downloadDir = false;
if (directory && *directory)
{
args->isSet_downloadDir = true;
args->downloadDir = tr_strdup (directory);
}
}
void
tr_ctorSetIncompleteDir (tr_ctor * ctor, const char * directory)
{
tr_free (ctor->incompleteDir);
ctor->incompleteDir = tr_strdup (directory);
}
int
tr_ctorGetPeerLimit (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)
err = 1;
else if (setmeCount)
*setmeCount = args->peerLimit;
return err;
}
int
tr_ctorGetPaused (const tr_ctor * ctor, tr_ctorMode mode, bool * setmeIsPaused)
{
int err = 0;
const struct optional_args * args = &ctor->optionalArgs[mode];
if (!args->isSet_paused)
err = 1;
else if (setmeIsPaused)
*setmeIsPaused = args->isPaused;
return err;
}
int
tr_ctorGetDownloadDir (const tr_ctor * ctor,
tr_ctorMode mode,
const char ** setmeDownloadDir)
{
int err = 0;
const struct optional_args * args = &ctor->optionalArgs[mode];
if (!args->isSet_downloadDir)
err = 1;
else if (setmeDownloadDir)
*setmeDownloadDir = args->downloadDir;
return err;
}
int
tr_ctorGetIncompleteDir (const tr_ctor * ctor,
const char ** setmeIncompleteDir)
{
int err = 0;
if (ctor->incompleteDir == NULL)
err = 1;
else
*setmeIncompleteDir = ctor->incompleteDir;
return err;
}
int
tr_ctorGetMetainfo (const tr_ctor * ctor,
const tr_variant ** setme)
{
int err = 0;
if (!ctor->isSet_metainfo)
err = 1;
else if (setme)
*setme = &ctor->metainfo;
return err;
}
tr_session*
tr_ctorGetSession (const tr_ctor * ctor)
{
return (tr_session*) ctor->session;
}
/***
****
***/
static bool
isPriority (int i)
{
return (i==TR_PRI_LOW) || (i==TR_PRI_NORMAL) || (i==TR_PRI_HIGH);
}
void
tr_ctorSetBandwidthPriority (tr_ctor * ctor, tr_priority_t priority)
{
if (isPriority (priority))
ctor->bandwidthPriority = priority;
}
tr_priority_t
tr_ctorGetBandwidthPriority (const tr_ctor * ctor)
{
return ctor->bandwidthPriority;
}
/***
****
***/
tr_ctor*
tr_ctorNew (const tr_session * session)
{
tr_ctor * ctor = tr_new0 (struct tr_ctor, 1);
ctor->session = session;
ctor->bandwidthPriority = TR_PRI_NORMAL;
if (session != NULL)
{
tr_ctorSetDeleteSource (ctor, tr_sessionGetDeleteSource (session));
tr_ctorSetPaused (ctor, TR_FALLBACK, tr_sessionGetPaused (session));
tr_ctorSetPeerLimit (ctor, TR_FALLBACK, session->peerLimitPerTorrent);
tr_ctorSetDownloadDir (ctor, TR_FALLBACK, tr_sessionGetDownloadDir(session));
}
tr_ctorSetSave (ctor, true);
return ctor;
}
void
tr_ctorFree (tr_ctor * ctor)
{
clearMetainfo (ctor);
tr_free (ctor->optionalArgs[1].downloadDir);
tr_free (ctor->optionalArgs[0].downloadDir);
tr_free (ctor->incompleteDir);
tr_free (ctor->want);
tr_free (ctor->notWant);
tr_free (ctor->low);
tr_free (ctor->high);
tr_free (ctor->normal);
tr_free (ctor);
}
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