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transmission/libtransmission/transmission.h

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/*
* This file Copyright (C) Transmission authors and contributors
*
* It may be used under the 3-Clause BSD License, the GNU Public License v2,
* or v3, or any future license endorsed by Mnemosyne LLC.
*
* $Id$
*/
/*
* This file defines the public API for the libtransmission library.
* The other public API headers are variant.h and utils.h;
* most of the remaining headers in libtransmission are private.
*/
#ifndef TR_TRANSMISSION_H
#define TR_TRANSMISSION_H 1
#ifdef __cplusplus
extern "C" {
#endif
/***
****
**** Basic Types
****
***/
#include <inttypes.h> /* uintN_t */
#include <time.h> /* time_t */
#ifdef _WIN32
#define __USE_MINGW_ANSI_STDIO 1
#define __STDC_FORMAT_MACROS 1
#endif
#if !defined (__cplusplus)
#ifdef HAVE_STDBOOL_H
#include <stdbool.h>
#elif !defined (__bool_true_false_are_defined)
#define bool uint8_t
#define true 1
#define false 0
#endif
#endif
#ifndef PRId64
#ifdef _WIN32
#define PRId64 "I64"
#else
#define PRId64 "lld"
#endif
#endif
#ifndef PRIu64
#ifdef _WIN32
#define PRIu64 "I64u"
#else
#define PRIu64 "llu"
#endif
#endif
#ifndef PRIu32
#ifdef _WIN32
#define PRIu32 "u"
#else
#define PRIu32 "lu"
#endif
#endif
#ifndef TR_PRIuSIZE
#ifdef _MSC_VER
#define TR_PRIuSIZE "Iu"
#else
#define TR_PRIuSIZE "zu"
#endif
#endif
#if defined (_WIN32) && defined (_MSC_VER)
#define inline __inline
#endif
#define SHA_DIGEST_LENGTH 20
#define TR_INET6_ADDRSTRLEN 46
typedef uint32_t tr_file_index_t;
typedef uint32_t tr_piece_index_t;
/* assuming a 16 KiB block, a 32-bit block index gives us a maximum torrent size of 63 TiB.
* if we ever need to grow past that, change this to uint64_t ;) */
typedef uint32_t tr_block_index_t;
typedef uint16_t tr_port;
typedef struct tr_ctor tr_ctor;
typedef struct tr_info tr_info;
typedef struct tr_torrent tr_torrent;
typedef struct tr_session tr_session;
struct tr_variant;
typedef int8_t tr_priority_t;
#define TR_RPC_SESSION_ID_HEADER "X-Transmission-Session-Id"
typedef enum
{
TR_PREALLOCATE_NONE = 0,
TR_PREALLOCATE_SPARSE = 1,
TR_PREALLOCATE_FULL = 2
}
tr_preallocation_mode;
typedef enum
{
TR_CLEAR_PREFERRED,
TR_ENCRYPTION_PREFERRED,
TR_ENCRYPTION_REQUIRED
}
tr_encryption_mode;
/***
****
**** Startup & Shutdown
****
***/
/**
* @addtogroup tr_session Session
*
* A libtransmission session is created by calling tr_sessionInit ().
* libtransmission creates a thread for itself so that it can operate
* independently of the caller's event loop. The session will continue
* until tr_sessionClose () is called.
*
* @{
*/
/**
* @brief returns Transmission's default configuration file directory.
*
* The default configuration directory is determined this way:
* -# If the TRANSMISSION_HOME environment variable is set, its value is used.
* -# On Darwin, "${HOME}/Library/Application Support/${appname}" is used.
* -# On Windows, "${CSIDL_APPDATA}/${appname}" is used.
* -# If XDG_CONFIG_HOME is set, "${XDG_CONFIG_HOME}/${appname}" is used.
* -# ${HOME}/.config/${appname}" is used as a last resort.
*/
const char* tr_getDefaultConfigDir (const char * appname);
/**
* @brief returns Transmisson's default download directory.
*
* The default download directory is determined this way:
* -# If the HOME environment variable is set, "${HOME}/Downloads" is used.
* -# On Windows, "${CSIDL_MYDOCUMENTS}/Downloads" is used.
* -# Otherwise, getpwuid (getuid ())->pw_dir + "/Downloads" is used.
*/
const char* tr_getDefaultDownloadDir (void);
#define TR_DEFAULT_BIND_ADDRESS_IPV4 "0.0.0.0"
#define TR_DEFAULT_BIND_ADDRESS_IPV6 "::"
#define TR_DEFAULT_RPC_WHITELIST "127.0.0.1"
#define TR_DEFAULT_RPC_PORT_STR "9091"
#define TR_DEFAULT_RPC_URL_STR "/transmission/"
#define TR_DEFAULT_PEER_PORT_STR "51413"
#define TR_DEFAULT_PEER_SOCKET_TOS_STR "default"
#define TR_DEFAULT_PEER_LIMIT_GLOBAL_STR "200"
#define TR_DEFAULT_PEER_LIMIT_TORRENT_STR "50"
/**
* Add libtransmission's default settings to the benc dictionary.
*
* Example:
* @code
* tr_variant settings;
* int64_t i;
*
* tr_variantInitDict (&settings, 0);
* tr_sessionGetDefaultSettings (&settings);
* if (tr_variantDictFindInt (&settings, TR_PREFS_KEY_PEER_PORT, &i))
* fprintf (stderr, "the default peer port is %d\n", (int)i);
* tr_variantFree (&settings);
* @endcode
*
* @param initme pointer to a tr_variant dictionary
* @see tr_sessionLoadSettings ()
* @see tr_sessionInit ()
* @see tr_getDefaultConfigDir ()
*/
void tr_sessionGetDefaultSettings (struct tr_variant * dictionary);
/**
* Add the session's current configuration settings to the benc dictionary.
*
* FIXME: this probably belongs in libtransmissionapp
*
* @param session
* @param dictionary
* @see tr_sessionGetDefaultSettings ()
*/
void tr_sessionGetSettings (tr_session *, struct tr_variant * dictionary);
/**
* Load settings from the configuration directory's settings.json file,
* using libtransmission's default settings as fallbacks for missing keys.
*
* FIXME: this belongs in libtransmissionapp
*
* @param dictionary pointer to an uninitialized tr_variant
* @param configDir the configuration directory to find settings.json
* @param appName if configDir is empty, appName is used to find the default dir.
* @return success true if the settings were loaded, false otherwise
* @see tr_sessionGetDefaultSettings ()
* @see tr_sessionInit ()
* @see tr_sessionSaveSettings ()
*/
bool tr_sessionLoadSettings (struct tr_variant * dictionary,
const char * configDir,
const char * appName);
/**
* Add the session's configuration settings to the benc dictionary
* and save it to the configuration directory's settings.json file.
*
* FIXME: this belongs in libtransmissionapp
*
* @param session
* @param dictionary
* @see tr_sessionLoadSettings ()
*/
void tr_sessionSaveSettings (tr_session * session,
const char * configDir,
const struct tr_variant * dictonary);
/**
* @brief Initialize a libtransmission session.
*
* For example, this will instantiate a session with all the default values:
* @code
* tr_variant settings;
* tr_session * session;
* const char * configDir;
*
* tr_variantInitDict (&settings, 0);
* tr_sessionGetDefaultSettings (&settings);
* configDir = tr_getDefaultConfigDir ("Transmission");
* session = tr_sessionInit ("mac", configDir, true, &settings);
*
* tr_variantFree (&settings);
* @endcode
*
* @param tag "gtk", "macosx", "daemon", etc... this is only for pre-1.30 resume files
* @param configDir where Transmission will look for resume files, blocklists, etc.
* @param messageQueueingEnabled if false, messages will be dumped to stderr
* @param settings libtransmission settings
* @see tr_sessionGetDefaultSettings ()
* @see tr_sessionLoadSettings ()
* @see tr_getDefaultConfigDir ()
*/
tr_session * tr_sessionInit (const char * tag,
const char * configDir,
bool messageQueueingEnabled,
struct tr_variant * settings);
/** @brief Update a session's settings from a benc dictionary
like to the one used in tr_sessionInit () */
void tr_sessionSet (tr_session * session,
struct tr_variant * settings);
/** @brief Rescan the blocklists directory and
reload whatever blocklist files are found there */
void tr_sessionReloadBlocklists (tr_session * session);
/** @brief End a libtransmission session
@see tr_sessionInit () */
void tr_sessionClose (tr_session *);
/**
* @brief Return the session's configuration directory.
*
* This is where transmission stores its .torrent files, .resume files,
* blocklists, etc. It's set in tr_transmissionInit () and is immutable
* during the session.
*/
const char * tr_sessionGetConfigDir (const tr_session *);
/**
* @brief Set the per-session default download folder for new torrents.
* @see tr_sessionInit ()
* @see tr_sessionGetDownloadDir ()
* @see tr_ctorSetDownloadDir ()
*/
void tr_sessionSetDownloadDir (tr_session * session, const char * downloadDir);
/**
* @brief Get the default download folder for new torrents.
*
* This is set by tr_sessionInit () or tr_sessionSetDownloadDir (),
* and can be overridden on a per-torrent basis by tr_ctorSetDownloadDir ().
*/
const char * tr_sessionGetDownloadDir (const tr_session * session);
/**
* @brief Get available disk space (in bytes) for the specified directory.
* @return zero or positive integer on success, -1 in case of error.
*/
int64_t tr_sessionGetDirFreeSpace (tr_session * session, const char * dir);
/**
* @brief Set the torrent's bandwidth priority.
*/
void tr_ctorSetBandwidthPriority (tr_ctor * ctor, tr_priority_t priority);
/**
* @brief Get the torrent's bandwidth priority.
*/
tr_priority_t tr_ctorGetBandwidthPriority (const tr_ctor * ctor);
/**
* @brief set the per-session incomplete download folder.
*
* When you add a new torrent and the session's incomplete directory is enabled,
* the new torrent will start downloading into that directory, and then be moved
* to tr_torrent.downloadDir when the torrent is finished downloading.
*
* Torrents aren't moved as a result of changing the session's incomplete dir --
* it's applied to new torrents, not existing ones.
*
* tr_torrentSetLocation () overrules the incomplete dir: when a user specifies
* a new location, that becomes the torrent's new downloadDir and the torrent
* is moved there immediately regardless of whether or not it's complete.
*
* @see tr_sessionInit ()
* @see tr_sessionGetIncompleteDir ()
* @see tr_sessionSetIncompleteDirEnabled ()
* @see tr_sessionGetIncompleteDirEnabled ()
*/
void tr_sessionSetIncompleteDir (tr_session * session, const char * dir);
/** @brief get the per-session incomplete download folder */
const char* tr_sessionGetIncompleteDir (const tr_session * session);
/** @brief enable or disable use of the incomplete download folder */
void tr_sessionSetIncompleteDirEnabled (tr_session * session, bool);
/** @brief get whether or not the incomplete download folder is enabled */
bool tr_sessionIsIncompleteDirEnabled (const tr_session * session);
/**
* @brief When enabled, newly-created files will have ".part" appended
* to their filename until the file is fully downloaded
*
* This is not retroactive -- toggling this will not rename existing files.
* It only applies to new files created by Transmission after this API call.
*
* @see tr_sessionIsIncompleteFileNamingEnabled ()
*/
void tr_sessionSetIncompleteFileNamingEnabled (tr_session * session, bool);
/** @brief return true if files will end in ".part" until they're complete */
bool tr_sessionIsIncompleteFileNamingEnabled (const tr_session * session);
/**
* @brief Set whether or not RPC calls are allowed in this session.
*
* @details If true, libtransmission will open a server socket to listen
* for incoming http RPC requests as described in docs/rpc-spec.txt.
*
* This is intially set by tr_sessionInit () and can be
* queried by tr_sessionIsRPCEnabled ().
*/
void tr_sessionSetRPCEnabled (tr_session * session,
bool isEnabled);
/** @brief Get whether or not RPC calls are allowed in this session.
@see tr_sessionInit ()
@see tr_sessionSetRPCEnabled () */
bool tr_sessionIsRPCEnabled (const tr_session * session);
/** @brief Specify which port to listen for RPC requests on.
@see tr_sessionInit ()
@see tr_sessionGetRPCPort */
void tr_sessionSetRPCPort (tr_session * session,
tr_port port);
/** @brief Get which port to listen for RPC requests on.
@see tr_sessionInit ()
@see tr_sessionSetRPCPort */
tr_port tr_sessionGetRPCPort (const tr_session * session);
/**
* @brief Specify which base URL to use.
*
* @detail The RPC API is accessible under <url>/rpc, the web interface under
* <url>/web.
*
* @see tr_sessionGetRPCUrl
*/
void tr_sessionSetRPCUrl (tr_session * session,
const char * url);
/**
* @brief Get the base URL.
* @see tr_sessionInit ()
* @see tr_sessionSetRPCUrl
*/
const char* tr_sessionGetRPCUrl (const tr_session * session);
/**
* @brief Specify a whitelist for remote RPC access
*
* The whitelist is a comma-separated list of dotted-quad IP addresses
* to be allowed. Wildmat notation is supported, meaning that
* '?' is interpreted as a single-character wildcard and
* '*' is interprted as a multi-character wildcard.
*/
void tr_sessionSetRPCWhitelist (tr_session * session,
const char * whitelist);
/** @brief get the Access Control List for allowing/denying RPC requests.
@return a comma-separated string of whitelist domains.
@see tr_sessionInit
@see tr_sessionSetRPCWhitelist */
const char* tr_sessionGetRPCWhitelist (const tr_session *);
void tr_sessionSetRPCWhitelistEnabled (tr_session * session,
bool isEnabled);
bool tr_sessionGetRPCWhitelistEnabled (const tr_session * session);
void tr_sessionSetRPCPassword (tr_session * session,
const char * password);
void tr_sessionSetRPCUsername (tr_session * session,
const char * username);
/** @brief get the password used to restrict RPC requests.
@return the password string.
@see tr_sessionInit ()
@see tr_sessionSetRPCPassword () */
const char* tr_sessionGetRPCPassword (const tr_session * session);
const char* tr_sessionGetRPCUsername (const tr_session * session);
void tr_sessionSetRPCPasswordEnabled (tr_session * session,
bool isEnabled);
bool tr_sessionIsRPCPasswordEnabled (const tr_session * session);
const char* tr_sessionGetRPCBindAddress (const tr_session * session);
typedef enum
{
TR_RPC_TORRENT_ADDED,
TR_RPC_TORRENT_STARTED,
TR_RPC_TORRENT_STOPPED,
TR_RPC_TORRENT_REMOVING,
TR_RPC_TORRENT_TRASHING, /* _REMOVING + delete local data */
TR_RPC_TORRENT_CHANGED, /* catch-all for the "torrent-set" rpc method */
TR_RPC_TORRENT_MOVED,
TR_RPC_SESSION_CHANGED,
TR_RPC_SESSION_QUEUE_POSITIONS_CHANGED, /* catch potentially multiple torrents being moved in the queue */
TR_RPC_SESSION_CLOSE
}
tr_rpc_callback_type;
typedef enum
{
/* no special handling is needed by the caller */
TR_RPC_OK = 0,
/* indicates to the caller that the client will take care of
* removing the torrent itself. For example the client may
* need to keep the torrent alive long enough to cleanly close
* some resources in another thread. */
TR_RPC_NOREMOVE = (1 << 1)
}
tr_rpc_callback_status;
typedef tr_rpc_callback_status (*tr_rpc_func)(tr_session * session,
tr_rpc_callback_type type,
struct tr_torrent * tor_or_null,
void * user_data);
/**
* Register to be notified whenever something is changed via RPC,
* such as a torrent being added, removed, started, stopped, etc.
*
* func is invoked FROM LIBTRANSMISSION'S THREAD!
* This means func must be fast (to avoid blocking peers),
* shouldn't call libtransmission functions (to avoid deadlock),
* and shouldn't modify client-level memory without using a mutex!
*/
void tr_sessionSetRPCCallback (tr_session * session,
tr_rpc_func func,
void * user_data);
/**
***
**/
/** @brief Used by tr_sessionGetStats () and tr_sessionGetCumulativeStats () */
typedef struct tr_session_stats
{
float ratio; /* TR_RATIO_INF, TR_RATIO_NA, or total up/down */
uint64_t uploadedBytes; /* total up */
uint64_t downloadedBytes; /* total down */
uint64_t filesAdded; /* number of files added */
uint64_t sessionCount; /* program started N times */
uint64_t secondsActive; /* how long Transmisson's been running */
}
tr_session_stats;
/** @brief Get bandwidth use statistics for the current session */
void tr_sessionGetStats (const tr_session * session,
tr_session_stats * setme);
/** @brief Get cumulative bandwidth statistics for current and past sessions */
void tr_sessionGetCumulativeStats (const tr_session * session,
tr_session_stats * setme);
void tr_sessionClearStats (tr_session * session);
/**
* @brief Set whether or not torrents are allowed to do peer exchanges.
*
* PEX is always disabled in private torrents regardless of this.
* In public torrents, PEX is enabled by default.
*/
void tr_sessionSetPexEnabled (tr_session * session, bool isEnabled);
bool tr_sessionIsPexEnabled (const tr_session * session);
bool tr_sessionIsDHTEnabled (const tr_session * session);
void tr_sessionSetDHTEnabled (tr_session * session, bool);
bool tr_sessionIsUTPEnabled (const tr_session * session);
void tr_sessionSetUTPEnabled (tr_session * session, bool);
bool tr_sessionIsLPDEnabled (const tr_session * session);
void tr_sessionSetLPDEnabled (tr_session * session, bool enabled);
void tr_sessionSetCacheLimit_MB (tr_session * session, int mb);
int tr_sessionGetCacheLimit_MB (const tr_session * session);
tr_encryption_mode tr_sessionGetEncryption (tr_session * session);
void tr_sessionSetEncryption (tr_session * session,
tr_encryption_mode mode);
/***********************************************************************
** Incoming Peer Connections Port
*/
void tr_sessionSetPortForwardingEnabled (tr_session * session,
bool enabled);
bool tr_sessionIsPortForwardingEnabled (const tr_session * session);
void tr_sessionSetPeerPort (tr_session * session,
tr_port port);
tr_port tr_sessionGetPeerPort (const tr_session * session);
tr_port tr_sessionSetPeerPortRandom (tr_session * session);
void tr_sessionSetPeerPortRandomOnStart (tr_session * session, bool random);
bool tr_sessionGetPeerPortRandomOnStart (tr_session * session);
typedef enum
{
TR_PORT_ERROR,
TR_PORT_UNMAPPED,
TR_PORT_UNMAPPING,
TR_PORT_MAPPING,
TR_PORT_MAPPED
}
tr_port_forwarding;
tr_port_forwarding tr_sessionGetPortForwarding (const tr_session * session);
typedef enum
{
TR_CLIENT_TO_PEER = 0, TR_UP = 0,
TR_PEER_TO_CLIENT = 1, TR_DOWN = 1
}
tr_direction;
/***
****
***/
/***
**** Primary session speed limits
***/
void tr_sessionSetSpeedLimit_KBps (tr_session *, tr_direction, unsigned int KBps);
unsigned int tr_sessionGetSpeedLimit_KBps (const tr_session *, tr_direction);
void tr_sessionLimitSpeed (tr_session *, tr_direction, bool);
bool tr_sessionIsSpeedLimited (const tr_session *, tr_direction);
/***
**** Alternative speed limits that are used during scheduled times
***/
void tr_sessionSetAltSpeed_KBps (tr_session *, tr_direction, unsigned int Bps);
unsigned int tr_sessionGetAltSpeed_KBps (const tr_session *, tr_direction);
void tr_sessionUseAltSpeed (tr_session *, bool);
bool tr_sessionUsesAltSpeed (const tr_session *);
void tr_sessionUseAltSpeedTime (tr_session *, bool);
bool tr_sessionUsesAltSpeedTime (const tr_session *);
void tr_sessionSetAltSpeedBegin (tr_session *, int minsSinceMidnight);
int tr_sessionGetAltSpeedBegin (const tr_session *);
void tr_sessionSetAltSpeedEnd (tr_session *, int minsSinceMidnight);
int tr_sessionGetAltSpeedEnd (const tr_session *);
typedef enum
{
TR_SCHED_SUN = (1<<0),
TR_SCHED_MON = (1<<1),
TR_SCHED_TUES = (1<<2),
TR_SCHED_WED = (1<<3),
TR_SCHED_THURS = (1<<4),
TR_SCHED_FRI = (1<<5),
TR_SCHED_SAT = (1<<6),
TR_SCHED_WEEKDAY = (TR_SCHED_MON|TR_SCHED_TUES|TR_SCHED_WED|
TR_SCHED_THURS|TR_SCHED_FRI),
TR_SCHED_WEEKEND = (TR_SCHED_SUN|TR_SCHED_SAT),
TR_SCHED_ALL = (TR_SCHED_WEEKDAY|TR_SCHED_WEEKEND)
}
tr_sched_day;
void tr_sessionSetAltSpeedDay (tr_session *, tr_sched_day day);
tr_sched_day tr_sessionGetAltSpeedDay (const tr_session *);
typedef void (*tr_altSpeedFunc)(tr_session *,
bool active,
bool userDriven,
void *);
void tr_sessionClearAltSpeedFunc (tr_session *);
void tr_sessionSetAltSpeedFunc (tr_session *, tr_altSpeedFunc, void *);
bool tr_sessionGetActiveSpeedLimit_KBps (const tr_session * session,
tr_direction dir,
double * setme);
/***
****
***/
double tr_sessionGetRawSpeed_KBps (const tr_session *, tr_direction);
void tr_sessionSetRatioLimited (tr_session *, bool isLimited);
bool tr_sessionIsRatioLimited (const tr_session *);
void tr_sessionSetRatioLimit (tr_session *, double desiredRatio);
double tr_sessionGetRatioLimit (const tr_session *);
void tr_sessionSetIdleLimited (tr_session *, bool isLimited);
bool tr_sessionIsIdleLimited (const tr_session *);
void tr_sessionSetIdleLimit (tr_session *, uint16_t idleMinutes);
uint16_t tr_sessionGetIdleLimit (const tr_session *);
void tr_sessionSetPeerLimit (tr_session *, uint16_t maxGlobalPeers);
uint16_t tr_sessionGetPeerLimit (const tr_session *);
void tr_sessionSetPeerLimitPerTorrent (tr_session *, uint16_t maxPeers);
uint16_t tr_sessionGetPeerLimitPerTorrent (const tr_session *);
void tr_sessionSetPaused (tr_session *, bool isPaused);
bool tr_sessionGetPaused (const tr_session *);
void tr_sessionSetDeleteSource (tr_session *, bool deleteSource);
bool tr_sessionGetDeleteSource (const tr_session *);
tr_priority_t tr_torrentGetPriority (const tr_torrent *);
void tr_torrentSetPriority (tr_torrent *, tr_priority_t);
/***
****
**** Torrent Queueing
****
**** There are independent queues for seeding (TR_UP) and leeching (TR_DOWN).
****
**** If the session already has enough non-stalled seeds/leeches when
**** tr_torrentStart () is called, the torrent will be moved into the
**** appropriate queue and its state will be TR_STATUS_{DOWNLOAD,SEED}_WAIT.
****
**** To bypass the queue and unconditionally start the torrent use
**** tr_torrentStartNow ().
****
**** Torrents can be moved in the queue using the simple functions
**** tr_torrentQueueMove{Top,Up,Down,Bottom}. They can be moved to
**** arbitrary points in the queue with tr_torrentSetQueuePosition ().
****
***/
/** @brief Like tr_torrentStart (), but resumes right away regardless of the queues. */
void tr_torrentStartNow (tr_torrent *);
/** @brief Return the queued torrent's position in the queue it's in. [0...n) */
int tr_torrentGetQueuePosition (const tr_torrent *);
/** @brief Set the queued torrent's position in the queue it's in.
* Special cases: pos <= 0 moves to the front; pos >= queue length moves to the back */
void tr_torrentSetQueuePosition (tr_torrent *, int queuePosition);
/**
**/
/** @brief Convenience function for moving a batch of torrents to the front of their queue (s) */
void tr_torrentsQueueMoveTop (tr_torrent ** torrents, int torrentCount);
/** @brief Convenience function for moving a batch of torrents ahead one step in their queue (s) */
void tr_torrentsQueueMoveUp (tr_torrent ** torrents, int torrentCount);
/** @brief Convenience function for moving a batch of torrents back one step in their queue (s) */
void tr_torrentsQueueMoveDown (tr_torrent ** torrents, int torrentCount);
/** @brief Convenience function for moving a batch of torrents to the back of their queue (s) */
void tr_torrentsQueueMoveBottom (tr_torrent ** torrents, int torrentCount);
/**
**/
/** @brief Set the number of torrents allowed to download (if direction is TR_DOWN) or seed (if direction is TR_UP) at the same time */
void tr_sessionSetQueueSize (tr_session *, tr_direction, int max_simultaneous_seed_torrents);
/** @brief Return the number of torrents allowed to download (if direction is TR_DOWN) or seed (if direction is TR_UP) at the same time */
int tr_sessionGetQueueSize (const tr_session *, tr_direction);
/** @brief Set whether or not to limit how many torrents can download (TR_DOWN) or seed (TR_UP) at the same time */
void tr_sessionSetQueueEnabled (tr_session *, tr_direction, bool do_limit_simultaneous_seed_torrents);
/** @brief Return true if we're limiting how many torrents can concurrently download (TR_DOWN) or seed (TR_UP) at the same time */
bool tr_sessionGetQueueEnabled (const tr_session *, tr_direction);
/**
**/
/** @brief Consider torrent as 'stalled' when it's been inactive for N minutes.
Stalled torrents are left running but are not counted by tr_sessionGetQueueSize (). */
void tr_sessionSetQueueStalledMinutes (tr_session *, int minutes);
/** @return the number of minutes a torrent can be idle before being considered as stalled */
int tr_sessionGetQueueStalledMinutes (const tr_session *);
/** @brief Set whether or not to count torrents idle for over N minutes as 'stalled' */
void tr_sessionSetQueueStalledEnabled (tr_session *, bool);
/** @return true if we're torrents idle for over N minutes will be flagged as 'stalled' */
bool tr_sessionGetQueueStalledEnabled (const tr_session *);
/**
**/
/** @brief Set a callback that is invoked when the queue starts a torrent */
void tr_torrentSetQueueStartCallback (tr_torrent * torrent, void (*callback)(tr_torrent *, void *), void * user_data);
/***
****
****
***/
/**
* Load all the torrents in tr_getTorrentDir ().
* This can be used at startup to kickstart all the torrents
* from the previous session.
*/
tr_torrent ** tr_sessionLoadTorrents (tr_session * session,
tr_ctor * ctor,
int * setmeCount);
/**
***
**/
bool tr_sessionIsTorrentDoneScriptEnabled (const tr_session *);
void tr_sessionSetTorrentDoneScriptEnabled (tr_session *, bool isEnabled);
const char * tr_sessionGetTorrentDoneScript (const tr_session *);
void tr_sessionSetTorrentDoneScript (tr_session *, const char * scriptFilename);
/** @} */
/**
***
**/
/***********************************************************************
** Message Logging
*/
typedef enum
{
TR_LOG_ERROR = 1,
TR_LOG_INFO = 2,
TR_LOG_DEBUG = 3,
TR_LOG_FIREHOSE = 4
}
tr_log_level;
void tr_logSetLevel (tr_log_level);
typedef struct tr_log_message
{
/* TR_LOG_ERROR, TR_LOG_INFO, or TR_LOG_DEBUG */
tr_log_level level;
/* The line number in the source file where this message originated */
int line;
/* Time the message was generated */
time_t when;
/* The torrent associated with this message,
* or a module name such as "Port Forwarding" for non-torrent messages,
* or NULL. */
char * name;
/* The message */
char * message;
/* The source file where this message originated */
const char * file;
/* linked list of messages */
struct tr_log_message * next;
}
tr_log_message;
tr_log_message * tr_logGetQueue (void);
bool tr_logGetQueueEnabled (void);
void tr_logSetQueueEnabled (bool isEnabled);
void tr_logFreeQueue (tr_log_message * freeme);
/** @addtogroup Blocklists
@{ */
/**
* Specify a range of IPs for Transmission to block.
*
* Filename must be an uncompressed ascii file.
*
* libtransmission does not keep a handle to `filename'
* after this call returns, so the caller is free to
* keep or delete `filename' as it wishes.
* libtransmission makes its own copy of the file
* massaged into a binary format easier to search.
*
* The caller only needs to invoke this when the blocklist
* has changed.
*
* Passing NULL for a filename will clear the blocklist.
*/
int tr_blocklistSetContent (tr_session * session,
const char * filename);
int tr_blocklistGetRuleCount (const tr_session * session);
bool tr_blocklistExists (const tr_session * session);
bool tr_blocklistIsEnabled (const tr_session * session);
void tr_blocklistSetEnabled (tr_session * session,
bool isEnabled);
/** @brief The blocklist that ges updated when an RPC client
invokes the "blocklist-update" method */
void tr_blocklistSetURL (tr_session *, const char * url);
const char * tr_blocklistGetURL (const tr_session *);
/** @brief the file in the $config/blocklists/ directory that's
used by tr_blocklistSetContent () and "blocklist-update" */
#define DEFAULT_BLOCKLIST_FILENAME "blocklist.bin"
/** @} */
/** @addtogroup tr_ctor Torrent Constructors
@{
Instantiating a tr_torrent had gotten more complicated as features were
added. At one point there were four functions to check metainfo and five
to create a tr_torrent object.
To remedy this, a Torrent Constructor (struct tr_ctor) has been introduced:
- Simplifies the API to two functions: tr_torrentParse () and tr_torrentNew ()
- You can set the fields you want; the system sets defaults for the rest.
- You can specify whether or not your fields should supercede resume's.
- We can add new features to tr_ctor without breaking tr_torrentNew ()'s API.
All the tr_ctor{Get,Set}* () functions with a return value return
an error number, or zero if no error occurred.
You must call one of the SetMetainfo () functions before creating
a torrent with a tr_ctor. The other functions are optional.
You can reuse a single tr_ctor to create a batch of torrents --
just call one of the SetMetainfo () functions between each
tr_torrentNew () call.
Every call to tr_ctorSetMetainfo* () frees the previous metainfo.
*/
typedef enum
{
TR_FALLBACK, /* indicates the ctor value should be used only
in case of missing resume settings */
TR_FORCE, /* indicates the ctor value should be used
regardless of what's in the resume settings */
}
tr_ctorMode;
/** @brief Create a torrent constructor object used to instantiate a tr_torrent
@param session the tr_session. This is required if you're going to call
tr_torrentNew (), but you can use NULL for tr_torrentParse ().
@see tr_torrentNew (), tr_torrentParse () */
tr_ctor* tr_ctorNew (const tr_session * session_or_NULL);
/** @brief Free a torrent constructor object */
void tr_ctorFree (tr_ctor * ctor);
/** @brief Set whether or not to delete the source .torrent file
when the torrent is added. (Default: False) */
void tr_ctorSetDeleteSource (tr_ctor * ctor, bool doDelete);
/** @brief Set the constructor's metainfo from a magnet link */
int tr_ctorSetMetainfoFromMagnetLink (tr_ctor * ctor, const char * magnet);
/** @brief Set the constructor's metainfo from a raw benc already in memory */
int tr_ctorSetMetainfo (tr_ctor * ctor, const uint8_t * metainfo, size_t len);
/** @brief Set the constructor's metainfo from a local .torrent file */
int tr_ctorSetMetainfoFromFile (tr_ctor * ctor, const char * filename);
/**
* @brief Set the metainfo from an existing file in tr_getTorrentDir ().
*
* This is used by the Mac client on startup to pick and choose which
* torrents to load
*/
int tr_ctorSetMetainfoFromHash (tr_ctor * ctor, const char * hashString);
/** @brief Set how many peers this torrent can connect to. (Default: 50) */
void tr_ctorSetPeerLimit (tr_ctor * ctor, tr_ctorMode mode, uint16_t limit);
/** @brief Set the download folder for the torrent being added with this ctor.
@see tr_ctorSetDownloadDir ()
@see tr_sessionInit () */
void tr_ctorSetDownloadDir (tr_ctor * ctor,
tr_ctorMode mode,
const char * directory);
/**
* @brief Set the incompleteDir for this torrent.
*
* This is not a supported API call.
* It only exists so the mac client can migrate
* its older incompleteDir settings, and that's
* the only place where it should be used.
*/
void tr_ctorSetIncompleteDir (tr_ctor * ctor, const char * directory);
/** Set whether or not the torrent begins downloading/seeding when created.
(Default: not paused) */
void tr_ctorSetPaused (tr_ctor * ctor,
tr_ctorMode mode,
bool isPaused);
/** @brief Set the priorities for files in a torrent */
void tr_ctorSetFilePriorities (tr_ctor * ctor,
const tr_file_index_t * files,
tr_file_index_t fileCount,
tr_priority_t priority);
/** @brief Set the download flag for files in a torrent */
void tr_ctorSetFilesWanted (tr_ctor * ctor,
const tr_file_index_t * fileIndices,
tr_file_index_t fileCount,
bool wanted);
/** @brief Get this peer constructor's peer limit */
int tr_ctorGetPeerLimit (const tr_ctor * ctor,
tr_ctorMode mode,
uint16_t * setmeCount);
/** @brief Get the "isPaused" flag from this peer constructor */
int tr_ctorGetPaused (const tr_ctor * ctor,
tr_ctorMode mode,
bool * setmeIsPaused);
/** @brief Get the download path from this peer constructor */
int tr_ctorGetDownloadDir (const tr_ctor * ctor,
tr_ctorMode mode,
const char ** setmeDownloadDir);
/** @brief Get the incomplete directory from this peer constructor */
int tr_ctorGetIncompleteDir (const tr_ctor * ctor,
const char ** setmeIncompleteDir);
/** @brief Get the metainfo from this peer constructor */
int tr_ctorGetMetainfo (const tr_ctor * ctor,
const struct tr_variant ** setme);
/** @brief Get the "delete .torrent file" flag from this peer constructor */
int tr_ctorGetDeleteSource (const tr_ctor * ctor,
bool * setmeDoDelete);
/** @brief Get the tr_session poiner from this peer constructor */
tr_session* tr_ctorGetSession (const tr_ctor * ctor);
/** @brief Get the .torrent file that this ctor's metainfo came from,
or NULL if tr_ctorSetMetainfoFromFile () wasn't used */
const char* tr_ctorGetSourceFile (const tr_ctor * ctor);
typedef enum
{
TR_PARSE_OK,
TR_PARSE_ERR,
TR_PARSE_DUPLICATE
}
tr_parse_result;
/**
* @brief Parses the specified metainfo
*
* @return TR_PARSE_ERR if parsing failed;
* TR_PARSE_OK if parsing succeeded and it's not a duplicate;
* TR_PARSE_DUPLICATE if parsing succeeded but it's a duplicate.
*
* @param setme_info If parsing is successful and setme_info is non-NULL,
* the parsed metainfo is stored there and sould be freed
* by calling tr_metainfoFree () when no longer needed.
*
* Notes:
*
* 1. tr_torrentParse () won't be able to check for duplicates -- and therefore
* won't return TR_PARSE_DUPLICATE -- unless ctor's "download-dir" and
* session variable is set.
*
* 2. setme_info->torrent's value can't be set unless ctor's session variable
* is set.
*/
tr_parse_result tr_torrentParse (const tr_ctor * ctor,
tr_info * setme_info_or_NULL);
/** @brief free a metainfo
@see tr_torrentParse */
void tr_metainfoFree (tr_info * inf);
/**
* Instantiate a single torrent.
*
* Returns a pointer to the torrent on success, or NULL on failure.
*
* @param setme_error: TR_PARSE_ERR if the parsing failed;
* TR_PARSE_OK if parsing succeeded and it's not a duplicate;
* TR_PARSE_DUPLICATE if parsing succeeded but it's a duplicate.
*
* @param setme_duplicate_id: when setmeError is TR_PARSE_DUPLICATE,
* this field is set to the duplicate torrent's id.
*/
tr_torrent * tr_torrentNew (const tr_ctor * ctor,
int * setme_error,
int * setme_duplicate_id);
/** @} */
/***********************************************************************
***
*** TORRENTS
**/
/** @addtogroup tr_torrent Torrents
@{ */
typedef int (*tr_fileFunc) (const char * filename);
/** @brief Removes our .torrent and .resume files for this torrent */
void tr_torrentRemove (tr_torrent * torrent,
bool removeLocalData,
tr_fileFunc removeFunc);
/** @brief Start a torrent */
void tr_torrentStart (tr_torrent * torrent);
/** @brief Stop (pause) a torrent */
void tr_torrentStop (tr_torrent * torrent);
typedef void (*tr_torrent_rename_done_func)(tr_torrent * torrent,
const char * oldpath,
const char * newname,
int error,
void * user_data);
/**
* @brief Rename a file or directory in a torrent.
*
* @tor: the torrent whose path will be renamed.
* @oldpath: the path to the file or folder that will be renamed
* @newname: the file or folder's new name
* @callback: the callback invoked when the renaming finishes, or NULL
* @callback_data: the pointer to pass in the callback's user_data arg
*
* As a special case, renaming the root file in a torrent will also
* update tr_info.name.
*
* EXAMPLES
*
* Consider a tr_torrent where its
* info.files[0].name is "frobnitz-linux/checksum" and
* info.files[1].name is "frobnitz-linux/frobnitz.iso".
*
* 1. tr_torrentRenamePath (tor, "frobnitz-linux", "foo") will rename
* the "frotbnitz-linux" folder as "foo", and update both info.name
* and info.files[*].name.
*
* 2. tr_torrentRenamePath (tor, "frobnitz-linux/checksum", "foo") will
* rename the "frobnitz-linux/checksum" file as "foo" and update
* files[0].name to "frobnitz-linux/foo".
*
* RETURN
*
* Changing tr_info's contents requires a session lock, so this function
* returns asynchronously to avoid blocking. If you don't want to be notified
* when the function has finished, you can pass NULL as the callback arg.
*
* On success, the callback's error argument will be 0.
*
* If oldpath can't be found in files[*].name, or if newname is already
* in files[*].name, or contains a directory separator, or is NULL, "",
* ".", or "..", the error argument will be EINVAL.
*
* If the path exists on disk but can't be renamed, the error argument
* will be the errno set by rename().
*/
void tr_torrentRenamePath (tr_torrent * tor,
const char * oldpath,
const char * newname,
tr_torrent_rename_done_func callback,
void * callback_user_data);
enum
{
TR_LOC_MOVING,
TR_LOC_DONE,
TR_LOC_ERROR
};
/**
* @brief Tell transmsision where to find this torrent's local data.
*
* if move_from_previous_location is `true', the torrent's incompleteDir
* will be clobberred s.t. additional files being added will be saved
* to the torrent's downloadDir.
*/
void tr_torrentSetLocation (tr_torrent * torrent,
const char * location,
bool move_from_previous_location,
volatile double * setme_progress,
volatile int * setme_state);
uint64_t tr_torrentGetBytesLeftToAllocate (const tr_torrent * torrent);
/**
* @brief Returns this torrent's unique ID.
*
* IDs are good as simple lookup keys, but are not persistent
* between sessions. If you need that, use tr_info.hash or
* tr_info.hashString.
*/
int tr_torrentId (const tr_torrent * torrent);
tr_torrent* tr_torrentFindFromId (tr_session * session, int id);
tr_torrent* tr_torrentFindFromHash (tr_session * session,
const uint8_t * hash);
/** @brief Convenience function similar to tr_torrentFindFromHash () */
tr_torrent* tr_torrentFindFromMagnetLink (tr_session * session,
const char * link);
/**
* @return this torrent's name.
*/
const char* tr_torrentName (const tr_torrent *);
/**
* @brief find the location of a torrent's file by looking with and without
* the ".part" suffix, looking in downloadDir and incompleteDir, etc.
* @return a newly-allocated string (that must be tr_freed () by the caller
* when done) that gives the location of this file on disk,
* or NULL if no file exists yet.
* @param tor the torrent whose file we're looking for
* @param fileNum the fileIndex, in [0...tr_info.fileCount)
*/
char* tr_torrentFindFile (const tr_torrent * tor, tr_file_index_t fileNo);
/***
**** Torrent speed limits
****
***/
void tr_torrentSetSpeedLimit_KBps (tr_torrent *, tr_direction, unsigned int KBps);
unsigned int tr_torrentGetSpeedLimit_KBps (const tr_torrent *, tr_direction);
void tr_torrentUseSpeedLimit (tr_torrent *, tr_direction, bool);
bool tr_torrentUsesSpeedLimit (const tr_torrent *, tr_direction);
void tr_torrentUseSessionLimits (tr_torrent *, bool);
bool tr_torrentUsesSessionLimits (const tr_torrent *);
/****
***** Ratio Limits
****/
typedef enum
{
/* follow the global settings */
TR_RATIOLIMIT_GLOBAL = 0,
/* override the global settings, seeding until a certain ratio */
TR_RATIOLIMIT_SINGLE = 1,
/* override the global settings, seeding regardless of ratio */
TR_RATIOLIMIT_UNLIMITED = 2
}
tr_ratiolimit;
void tr_torrentSetRatioMode (tr_torrent * tor,
tr_ratiolimit mode);
tr_ratiolimit tr_torrentGetRatioMode (const tr_torrent * tor);
void tr_torrentSetRatioLimit (tr_torrent * tor,
double ratio);
double tr_torrentGetRatioLimit (const tr_torrent * tor);
bool tr_torrentGetSeedRatio (const tr_torrent *, double * ratio);
/****
***** Idle Time Limits
****/
typedef enum
{
/* follow the global settings */
TR_IDLELIMIT_GLOBAL = 0,
/* override the global settings, seeding until a certain idle time */
TR_IDLELIMIT_SINGLE = 1,
/* override the global settings, seeding regardless of activity */
TR_IDLELIMIT_UNLIMITED = 2
}
tr_idlelimit;
void tr_torrentSetIdleMode (tr_torrent * tor,
tr_idlelimit mode);
tr_idlelimit tr_torrentGetIdleMode (const tr_torrent * tor);
void tr_torrentSetIdleLimit (tr_torrent * tor,
uint16_t idleMinutes);
uint16_t tr_torrentGetIdleLimit (const tr_torrent * tor);
bool tr_torrentGetSeedIdle (const tr_torrent *, uint16_t * minutes);
/****
***** Peer Limits
****/
void tr_torrentSetPeerLimit (tr_torrent * tor, uint16_t peerLimit);
uint16_t tr_torrentGetPeerLimit (const tr_torrent * tor);
/****
***** File Priorities
****/
enum
{
TR_PRI_LOW = -1,
TR_PRI_NORMAL = 0, /* since NORMAL is 0, memset initializes nicely */
TR_PRI_HIGH = 1
};
/**
* @brief Set a batch of files to a particular priority.
*
* @param priority must be one of TR_PRI_NORMAL, _HIGH, or _LOW
*/
void tr_torrentSetFilePriorities (tr_torrent * torrent,
const tr_file_index_t * files,
tr_file_index_t fileCount,
tr_priority_t priority);
/**
* @brief Get this torrent's file priorities.
*
* @return A malloc ()ed array of tor->info.fileCount items,
* each holding a TR_PRI_NORMAL, TR_PRI_HIGH, or TR_PRI_LOW.
* It's the caller's responsibility to free () this.
*/
tr_priority_t* tr_torrentGetFilePriorities (const tr_torrent * torrent);
/** @brief Set a batch of files to be downloaded or not. */
void tr_torrentSetFileDLs (tr_torrent * torrent,
const tr_file_index_t * files,
tr_file_index_t fileCount,
bool do_download);
const tr_info * tr_torrentInfo (const tr_torrent * torrent);
/* Raw function to change the torrent's downloadDir field.
This should only be used by libtransmission or to bootstrap
a newly-instantiated tr_torrent object. */
void tr_torrentSetDownloadDir (tr_torrent * torrent, const char * path);
const char * tr_torrentGetDownloadDir (const tr_torrent * torrent);
/**
* Returns the root directory of where the torrent is.
*
* This will usually be the downloadDir. However if the torrent
* has an incompleteDir enabled and hasn't finished downloading
* yet, that will be returned instead.
*/
const char * tr_torrentGetCurrentDir (const tr_torrent * tor);
char* tr_torrentInfoGetMagnetLink (const tr_info * inf);
/**
* Returns a newly-allocated string with a magnet link of the torrent.
* Use tr_free () to free the string when done.
*/
static inline
char* tr_torrentGetMagnetLink (const tr_torrent * tor)
{
return tr_torrentInfoGetMagnetLink (tr_torrentInfo (tor));
}
/**
***
**/
/** @brief a part of tr_info that represents a single tracker */
typedef struct tr_tracker_info
{
int tier;
char * announce;
char * scrape;
uint32_t id; /* unique identifier used to match to a tr_tracker_stat */
}
tr_tracker_info;
/**
* @brief Modify a torrent's tracker list.
*
* This updates both the `torrent' object's tracker list
* and the metainfo file in tr_sessionGetConfigDir ()'s torrent subdirectory.
*
* @param torrent The torrent whose tracker list is to be modified
* @param trackers An array of trackers, sorted by tier from first to last.
* NOTE: only the `tier' and `announce' fields are used.
* libtransmission derives `scrape' from `announce'
* and reassigns 'id'.
* @param trackerCount size of the `trackers' array
*/
bool
tr_torrentSetAnnounceList (tr_torrent * torrent,
const tr_tracker_info * trackers,
int trackerCount);
/**
***
**/
typedef enum
{
TR_LEECH, /* doesn't have all the desired pieces */
TR_SEED, /* has the entire torrent */
TR_PARTIAL_SEED /* has the desired pieces, but not the entire torrent */
}
tr_completeness;
/**
* @param wasRunning whether or not the torrent was running when
* it changed its completeness state
*/
typedef void (*tr_torrent_completeness_func)(tr_torrent * torrent,
tr_completeness completeness,
bool wasRunning,
void * user_data);
typedef void (*tr_torrent_ratio_limit_hit_func)(tr_torrent * torrent,
void * user_data);
typedef void (*tr_torrent_idle_limit_hit_func)(tr_torrent * torrent,
void * user_data);
/**
* Register to be notified whenever a torrent's "completeness"
* changes. This will be called, for example, when a torrent
* finishes downloading and changes from TR_LEECH to
* either TR_SEED or TR_PARTIAL_SEED.
*
* func is invoked FROM LIBTRANSMISSION'S THREAD!
* This means func must be fast (to avoid blocking peers),
* shouldn't call libtransmission functions (to avoid deadlock),
* and shouldn't modify client-level memory without using a mutex!
*
* @see tr_completeness
*/
void tr_torrentSetCompletenessCallback (
tr_torrent * torrent,
tr_torrent_completeness_func func,
void * user_data);
void tr_torrentClearCompletenessCallback (tr_torrent * torrent);
typedef void (*tr_torrent_metadata_func)(tr_torrent * torrent,
void * user_data);
/**
* Register to be notified whenever a torrent changes from
* having incomplete metadata to having complete metadata.
* This happens when a magnet link finishes downloading
* metadata from its peers.
*/
void tr_torrentSetMetadataCallback (
tr_torrent * tor,
tr_torrent_metadata_func func,
void * user_data);
/**
* Register to be notified whenever a torrent's ratio limit
* has been hit. This will be called when the torrent's
* ul/dl ratio has met or exceeded the designated ratio limit.
*
* Has the same restrictions as tr_torrentSetCompletenessCallback
*/
void tr_torrentSetRatioLimitHitCallback (
tr_torrent * torrent,
tr_torrent_ratio_limit_hit_func func,
void * user_data);
void tr_torrentClearRatioLimitHitCallback (tr_torrent * torrent);
/**
* Register to be notified whenever a torrent's idle limit
* has been hit. This will be called when the seeding torrent's
* idle time has met or exceeded the designated idle limit.
*
* Has the same restrictions as tr_torrentSetCompletenessCallback
*/
void tr_torrentSetIdleLimitHitCallback (
tr_torrent * torrent,
tr_torrent_idle_limit_hit_func func,
void * user_data);
void tr_torrentClearIdleLimitHitCallback (tr_torrent * torrent);
/**
* MANUAL ANNOUNCE
*
* Trackers usually set an announce interval of 15 or 30 minutes.
* Users can send one-time announce requests that override this
* interval by calling tr_torrentManualUpdate ().
*
* The wait interval for tr_torrentManualUpdate () is much smaller.
* You can test whether or not a manual update is possible
* (for example, to desensitize the button) by calling
* tr_torrentCanManualUpdate ().
*/
void tr_torrentManualUpdate (tr_torrent * torrent);
bool tr_torrentCanManualUpdate (const tr_torrent * torrent);
/***
**** tr_peer_stat
***/
typedef struct tr_peer_stat
{
bool isUTP;
bool isEncrypted;
bool isDownloadingFrom;
bool isUploadingTo;
bool isSeed;
bool peerIsChoked;
bool peerIsInterested;
bool clientIsChoked;
bool clientIsInterested;
bool isIncoming;
uint8_t from;
tr_port port;
char addr[TR_INET6_ADDRSTRLEN];
char client[80];
char flagStr[32];
float progress;
double rateToPeer_KBps;
double rateToClient_KBps;
/***
**** THESE NEXT FOUR FIELDS ARE EXPERIMENTAL.
**** Don't rely on them; they'll probably go away
***/
/* how many blocks we've sent to this peer in the last 120 seconds */
uint32_t blocksToPeer;
/* how many blocks this client's sent to us in the last 120 seconds */
uint32_t blocksToClient;
/* how many requests to this peer that we've cancelled in the last 120 seconds */
uint32_t cancelsToPeer;
/* how many requests this peer made of us, then cancelled, in the last 120 seconds */
uint32_t cancelsToClient;
/* how many requests the peer has made that we haven't responded to yet */
int pendingReqsToClient;
/* how many requests we've made and are currently awaiting a response for */
int pendingReqsToPeer;
}
tr_peer_stat;
tr_peer_stat * tr_torrentPeers (const tr_torrent * torrent,
int * peerCount);
void tr_torrentPeersFree (tr_peer_stat * peerStats,
int peerCount);
/***
**** tr_tracker_stat
***/
typedef enum
{
/* we won't (announce,scrape) this torrent to this tracker because
* the torrent is stopped, or because of an error, or whatever */
TR_TRACKER_INACTIVE = 0,
/* we will (announce,scrape) this torrent to this tracker, and are
* waiting for enough time to pass to satisfy the tracker's interval */
TR_TRACKER_WAITING = 1,
/* it's time to (announce,scrape) this torrent, and we're waiting on a
* a free slot to open up in the announce manager */
TR_TRACKER_QUEUED = 2,
/* we're (announcing,scraping) this torrent right now */
TR_TRACKER_ACTIVE = 3
}
tr_tracker_state;
typedef struct
{
/* how many downloads this tracker knows of (-1 means it does not know) */
int downloadCount;
/* whether or not we've ever sent this tracker an announcement */
bool hasAnnounced;
/* whether or not we've ever scraped to this tracker */
bool hasScraped;
/* human-readable string identifying the tracker */
char host[1024];
/* the full announce URL */
char announce[1024];
/* the full scrape URL */
char scrape[1024];
/* Transmission uses one tracker per tier,
* and the others are kept as backups */
bool isBackup;
/* is the tracker announcing, waiting, queued, etc */
tr_tracker_state announceState;
/* is the tracker scraping, waiting, queued, etc */
tr_tracker_state scrapeState;
/* number of peers the tracker told us about last time.
* if "lastAnnounceSucceeded" is false, this field is undefined */
int lastAnnouncePeerCount;
/* human-readable string with the result of the last announce.
if "hasAnnounced" is false, this field is undefined */
char lastAnnounceResult[128];
/* when the last announce was sent to the tracker.
* if "hasAnnounced" is false, this field is undefined */
time_t lastAnnounceStartTime;
/* whether or not the last announce was a success.
if "hasAnnounced" is false, this field is undefined */
bool lastAnnounceSucceeded;
/* whether or not the last announce timed out. */
bool lastAnnounceTimedOut;
/* when the last announce was completed.
if "hasAnnounced" is false, this field is undefined */
time_t lastAnnounceTime;
/* human-readable string with the result of the last scrape.
* if "hasScraped" is false, this field is undefined */
char lastScrapeResult[128];
/* when the last scrape was sent to the tracker.
* if "hasScraped" is false, this field is undefined */
time_t lastScrapeStartTime;
/* whether or not the last scrape was a success.
if "hasAnnounced" is false, this field is undefined */
bool lastScrapeSucceeded;
/* whether or not the last scrape timed out. */
bool lastScrapeTimedOut;
/* when the last scrape was completed.
if "hasScraped" is false, this field is undefined */
time_t lastScrapeTime;
/* number of leechers this tracker knows of (-1 means it does not know) */
int leecherCount;
/* when the next periodic announce message will be sent out.
if announceState isn't TR_TRACKER_WAITING, this field is undefined */
time_t nextAnnounceTime;
/* when the next periodic scrape message will be sent out.
if scrapeState isn't TR_TRACKER_WAITING, this field is undefined */
time_t nextScrapeTime;
/* number of seeders this tracker knows of (-1 means it does not know) */
int seederCount;
/* which tier this tracker is in */
int tier;
/* used to match to a tr_tracker_info */
uint32_t id;
}
tr_tracker_stat;
tr_tracker_stat * tr_torrentTrackers (const tr_torrent * torrent,
int * setmeTrackerCount);
void tr_torrentTrackersFree (tr_tracker_stat * trackerStats,
int trackerCount);
/**
* @brief get the download speeds for each of this torrent's webseed sources.
*
* @return an array of tor->info.webseedCount floats giving download speeds.
* Each speed in the array corresponds to the webseed at the same
* array index in tor->info.webseeds.
* To differentiate "idle" and "stalled" status, idle webseeds will
* return -1 instead of 0 KiB/s.
* NOTE: always free this array with tr_free () when you're done with it.
*/
double* tr_torrentWebSpeeds_KBps (const tr_torrent * torrent);
typedef struct tr_file_stat
{
uint64_t bytesCompleted;
float progress;
}
tr_file_stat;
tr_file_stat * tr_torrentFiles (const tr_torrent * torrent,
tr_file_index_t * fileCount);
void tr_torrentFilesFree (tr_file_stat * files,
tr_file_index_t fileCount);
/***********************************************************************
* tr_torrentAvailability
***********************************************************************
* Use this to draw an advanced progress bar which is 'size' pixels
* wide. Fills 'tab' which you must have allocated: each byte is set
* to either -1 if we have the piece, otherwise it is set to the number
* of connected peers who have the piece.
**********************************************************************/
void tr_torrentAvailability (const tr_torrent * torrent,
int8_t * tab,
int size);
void tr_torrentAmountFinished (const tr_torrent * torrent,
float * tab,
int size);
/**
* Callback function invoked when a torrent finishes being verified.
*
* @param torrent the torrent that was verified
* @param aborted true if the verify ended prematurely for some reason,
* such as tr_torrentStop() or tr_torrentSetLocation()
* being called during verification.
* @param callback_data the user-defined pointer from tr_torrentVerify()
*/
typedef void (*tr_verify_done_func)(tr_torrent * torrent,
bool aborted,
void * user_data);
/**
* Queue a torrent for verification.
*
* If callback_func is non-NULL, it will be called from the libtransmission
* thread after the torrent's completness state is updated after the
* file verification pass.
*/
void tr_torrentVerify (tr_torrent * torrent,
tr_verify_done_func callback_func_or_NULL,
void * callback_data_or_NULL);
/***********************************************************************
* tr_info
**********************************************************************/
/** @brief a part of tr_info that represents a single file of the torrent's content */
typedef struct tr_file
{
uint64_t length; /* Length of the file, in bytes */
char * name; /* Path to the file */
int8_t priority; /* TR_PRI_HIGH, _NORMAL, or _LOW */
int8_t dnd; /* "do not download" flag */
int8_t is_renamed; /* true if we're using a different path from the one in the metainfo; ie, if the user has renamed it */
tr_piece_index_t firstPiece; /* We need pieces [firstPiece... */
tr_piece_index_t lastPiece; /* ...lastPiece] to dl this file */
uint64_t offset; /* file begins at the torrent's nth byte */
}
tr_file;
/** @brief a part of tr_info that represents a single piece of the torrent's content */
typedef struct tr_piece
{
time_t timeChecked; /* the last time we tested this piece */
uint8_t hash[SHA_DIGEST_LENGTH]; /* pieces hash */
int8_t priority; /* TR_PRI_HIGH, _NORMAL, or _LOW */
int8_t dnd; /* "do not download" flag */
}
tr_piece;
/** @brief information about a torrent that comes from its metainfo file */
struct tr_info
{
/* total size of the torrent, in bytes */
uint64_t totalSize;
/* The original name that came in this torrent's metainfo.
* CLIENT CODE: NOT USE THIS FIELD. */
char * originalName;
/* The torrent's name. */
char * name;
/* Path to torrent Transmission's internal copy of the .torrent file. */
char * torrent;
char ** webseeds;
char * comment;
char * creator;
tr_file * files;
tr_piece * pieces;
/* these trackers are sorted by tier */
tr_tracker_info * trackers;
/* Torrent info */
time_t dateCreated;
unsigned int trackerCount;
unsigned int webseedCount;
tr_file_index_t fileCount;
uint32_t pieceSize;
tr_piece_index_t pieceCount;
/* General info */
uint8_t hash[SHA_DIGEST_LENGTH];
char hashString[2 * SHA_DIGEST_LENGTH + 1];
/* Flags */
bool isPrivate;
bool isFolder;
};
static inline bool tr_torrentHasMetadata (const tr_torrent * tor)
{
return tr_torrentInfo (tor)->fileCount > 0;
}
/**
* What the torrent is doing right now.
*
* Note: these values will become a straight enum at some point in the future.
* Do not rely on their current `bitfield' implementation
*/
typedef enum
{
TR_STATUS_STOPPED = 0, /* Torrent is stopped */
TR_STATUS_CHECK_WAIT = 1, /* Queued to check files */
TR_STATUS_CHECK = 2, /* Checking files */
TR_STATUS_DOWNLOAD_WAIT = 3, /* Queued to download */
TR_STATUS_DOWNLOAD = 4, /* Downloading */
TR_STATUS_SEED_WAIT = 5, /* Queued to seed */
TR_STATUS_SEED = 6 /* Seeding */
}
tr_torrent_activity;
enum
{
TR_PEER_FROM_INCOMING = 0, /* connections made to the listening port */
TR_PEER_FROM_LPD, /* peers found by local announcements */
TR_PEER_FROM_TRACKER, /* peers found from a tracker */
TR_PEER_FROM_DHT, /* peers found from the DHT */
TR_PEER_FROM_PEX, /* peers found from PEX */
TR_PEER_FROM_RESUME, /* peers found in the .resume file */
TR_PEER_FROM_LTEP, /* peer address provided in an LTEP handshake */
TR_PEER_FROM__MAX
};
typedef enum
{
/* everything's fine */
TR_STAT_OK = 0,
/* when we anounced to the tracker, we got a warning in the response */
TR_STAT_TRACKER_WARNING = 1,
/* when we anounced to the tracker, we got an error in the response */
TR_STAT_TRACKER_ERROR = 2,
/* local trouble, such as disk full or permissions error */
TR_STAT_LOCAL_ERROR = 3
}
tr_stat_errtype;
/** @brief Used by tr_torrentStat () to tell clients about a torrent's state and statistics */
typedef struct tr_stat
{
/** The torrent's unique Id.
@see tr_torrentId () */
int id;
/** What is this torrent doing right now? */
tr_torrent_activity activity;
/** Defines what kind of text is in errorString.
@see errorString */
tr_stat_errtype error;
/** A warning or error message regarding the torrent.
@see error */
char errorString[512];
/** When tr_stat.activity is TR_STATUS_CHECK or TR_STATUS_CHECK_WAIT,
this is the percentage of how much of the files has been
verified. When it gets to 1, the verify process is done.
Range is [0..1]
@see tr_stat.activity */
float recheckProgress;
/** How much has been downloaded of the entire torrent.
Range is [0..1] */
float percentComplete;
/** How much of the metadata the torrent has.
For torrents added from a .torrent this will always be 1.
For magnet links, this number will from from 0 to 1 as the metadata is downloaded.
Range is [0..1] */
float metadataPercentComplete;
/** How much has been downloaded of the files the user wants. This differs
from percentComplete if the user wants only some of the torrent's files.
Range is [0..1]
@see tr_stat.leftUntilDone */
float percentDone;
/** How much has been uploaded to satisfy the seed ratio.
This is 1 if the ratio is reached or the torrent is set to seed forever.
Range is [0..1] */
float seedRatioPercentDone;
/** Speed all data being sent for this torrent.
This includes piece data, protocol messages, and TCP overhead */
float rawUploadSpeed_KBps;
/** Speed all data being received for this torrent.
This includes piece data, protocol messages, and TCP overhead */
float rawDownloadSpeed_KBps;
/** Speed all piece being sent for this torrent.
This ONLY counts piece data. */
float pieceUploadSpeed_KBps;
/** Speed all piece being received for this torrent.
This ONLY counts piece data. */
float pieceDownloadSpeed_KBps;
#define TR_ETA_NOT_AVAIL -1
#define TR_ETA_UNKNOWN -2
/** If downloading, estimated number of seconds left until the torrent is done.
If seeding, estimated number of seconds left until seed ratio is reached. */
int eta;
/** If seeding, number of seconds left until the idle time limit is reached. */
int etaIdle;
/** Number of peers that we're connected to */
int peersConnected;
/** How many peers we found out about from the tracker, or from pex,
or from incoming connections, or from our resume file. */
int peersFrom[TR_PEER_FROM__MAX];
/** Number of peers that are sending data to us. */
int peersSendingToUs;
/** Number of peers that we're sending data to */
int peersGettingFromUs;
/** Number of webseeds that are sending data to us. */
int webseedsSendingToUs;
/** Byte count of all the piece data we'll have downloaded when we're done,
whether or not we have it yet. This may be less than tr_info.totalSize
if only some of the torrent's files are wanted.
[0...tr_info.totalSize] */
uint64_t sizeWhenDone;
/** Byte count of how much data is left to be downloaded until we've got
all the pieces that we want. [0...tr_info.sizeWhenDone] */
uint64_t leftUntilDone;
/** Byte count of all the piece data we want and don't have yet,
but that a connected peer does have. [0...leftUntilDone] */
uint64_t desiredAvailable;
/** Byte count of all the corrupt data you've ever downloaded for
this torrent. If you're on a poisoned torrent, this number can
grow very large. */
uint64_t corruptEver;
/** Byte count of all data you've ever uploaded for this torrent. */
uint64_t uploadedEver;
/** Byte count of all the non-corrupt data you've ever downloaded
for this torrent. If you deleted the files and downloaded a second
time, this will be 2*totalSize.. */
uint64_t downloadedEver;
/** Byte count of all the checksum-verified data we have for this torrent.
*/
uint64_t haveValid;
/** Byte count of all the partial piece data we have for this torrent.
As pieces become complete, this value may decrease as portions of it
are moved to `corrupt' or `haveValid'. */
uint64_t haveUnchecked;
/** time when one or more of the torrent's trackers will
allow you to manually ask for more peers,
or 0 if you can't */
time_t manualAnnounceTime;
#define TR_RATIO_NA -1
#define TR_RATIO_INF -2
/** TR_RATIO_INF, TR_RATIO_NA, or a regular ratio */
float ratio;
/** When the torrent was first added. */
time_t addedDate;
/** When the torrent finished downloading. */
time_t doneDate;
/** When the torrent was last started. */
time_t startDate;
/** The last time we uploaded or downloaded piece data on this torrent. */
time_t activityDate;
/** Number of seconds since the last activity (or since started).
-1 if activity is not seeding or downloading. */
int idleSecs;
/** Cumulative seconds the torrent's ever spent downloading */
int secondsDownloading;
/** Cumulative seconds the torrent's ever spent seeding */
int secondsSeeding;
/** A torrent is considered finished if it has met its seed ratio.
As a result, only paused torrents can be finished. */
bool finished;
/** This torrent's queue position.
All torrents have a queue position, even if it's not queued. */
int queuePosition;
/** True if the torrent is running, but has been idle for long enough
to be considered stalled. @see tr_sessionGetQueueStalledMinutes () */
bool isStalled;
}
tr_stat;
/** Return a pointer to an tr_stat structure with updated information
on the torrent. This is typically called by the GUI clients every
second or so to get a new snapshot of the torrent's status. */
const tr_stat * tr_torrentStat (tr_torrent * torrent);
/** Like tr_torrentStat (), but only recalculates the statistics if it's
been longer than a second since they were last calculated. This can
reduce the CPU load if you're calling tr_torrentStat () frequently. */
const tr_stat * tr_torrentStatCached (tr_torrent * torrent);
/** @deprecated */
void tr_torrentSetAddedDate (tr_torrent * torrent,
time_t addedDate);
/** @deprecated */
void tr_torrentSetActivityDate (tr_torrent * torrent,
time_t activityDate);
/** @deprecated */
void tr_torrentSetDoneDate (tr_torrent * torrent, time_t doneDate);
/** @} */
/** @brief Sanity checker to test that the direction is TR_UP or TR_DOWN */
static inline bool tr_isDirection (tr_direction d) { return d==TR_UP || d==TR_DOWN; }
/** @brief Sanity checker to test that a bool is true or false */
static inline bool tr_isBool (bool b) { return b==1 || b==0; }
#ifdef __cplusplus
}
#endif
#endif
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