/* * 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 /* uintN_t */ #include /* time_t */ #ifdef _MSC_VER typedef intptr_t ssize_t; #endif #if !defined (__cplusplus) #ifdef HAVE_STDBOOL_H #include #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 PRIdMAX #ifdef _WIN32 #define PRIdMAX "I64" #else #define PRIdMAX "jd" #endif #endif #ifndef TR_PRIuSIZE #ifdef _WIN32 #define TR_PRIuSIZE "Iu" #else #define TR_PRIuSIZE "zu" #endif #endif #if defined (_MSC_VER) && !defined (__cplusplus) #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 /rpc, the web interface under * /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 */ bool tr_ctorGetPeerLimit (const tr_ctor * ctor, tr_ctorMode mode, uint16_t * setmeCount); /** @brief Get the "isPaused" flag from this peer constructor */ bool tr_ctorGetPaused (const tr_ctor * ctor, tr_ctorMode mode, bool * setmeIsPaused); /** @brief Get the download path from this peer constructor */ bool tr_ctorGetDownloadDir (const tr_ctor * ctor, tr_ctorMode mode, const char ** setmeDownloadDir); /** @brief Get the incomplete directory from this peer constructor */ bool tr_ctorGetIncompleteDir (const tr_ctor * ctor, const char ** setmeIncompleteDir); /** @brief Get the metainfo from this peer constructor */ bool tr_ctorGetMetainfo (const tr_ctor * ctor, const struct tr_variant ** setme); /** @brief Get the "delete .torrent file" flag from this peer constructor */ bool 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