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transmission/libtransmission/transmission.h

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/******************************************************************************
* $Id$
*
* Copyright (c) 2005-2007 Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#ifndef TR_TRANSMISSION_H
#define TR_TRANSMISSION_H 1
#ifdef __cplusplus
extern "C" {
#endif
#include "version.h"
#include <inttypes.h>
#ifndef PRId64
# define PRId64 "lld"
#endif
#ifndef PRIu64
# define PRIu64 "llu"
#endif
#include <time.h>
#define SHA_DIGEST_LENGTH 20
#ifdef __BEOS__
# include <StorageDefs.h>
# define MAX_PATH_LENGTH B_FILE_NAME_LENGTH
#else
# define MAX_PATH_LENGTH 1024
#endif
#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN 16
#endif
#if defined(__MINGW__)
#define TR_PATH_DELIMITER '\\'
#define TR_PATH_DELIMITER_STR "\\"
#else
#define TR_PATH_DELIMITER '/'
#define TR_PATH_DELIMITER_STR "/"
#endif
#define TR_DEFAULT_PORT 9090
#define TR_PEER_FROM__MAX 4
#define TR_PEER_FROM_INCOMING 0 /* connections made to the listening port */
#define TR_PEER_FROM_TRACKER 1 /* peers received from a tracker */
#define TR_PEER_FROM_CACHE 2 /* peers read from the peer cache */
#define TR_PEER_FROM_PEX 3 /* peers discovered via PEX */
/***********************************************************************
* Error codes
**********************************************************************/
/* General errors */
#define TR_OK 0x00000000
#define TR_ERROR 0x81000000
#define TR_ERROR_ASSERT 0x82000000
/* I/O errors */
#define TR_ERROR_IO_MASK 0x000000FF
#define TR_ERROR_IO_PARENT 0x80000001
#define TR_ERROR_IO_PERMISSIONS 0x80000002
#define TR_ERROR_IO_SPACE 0x80000004
#define TR_ERROR_IO_FILE_TOO_BIG 0x80000008
#define TR_ERROR_IO_OPEN_FILES 0x80000010
#define TR_ERROR_IO_DUP_DOWNLOAD 0x80000020
#define TR_ERROR_IO_OTHER 0x80000040
/* Misc */
#define TR_ERROR_TC_MASK 0x00000F00
#define TR_ERROR_TC_ERROR 0x80000100
#define TR_ERROR_TC_WARNING 0x80000200
#define TR_ERROR_ISSET( num, code ) ( (code) == ( (code) & (num) ) )
/***********************************************************************
* tr_init
***********************************************************************
* Initializes a libtransmission instance. Returns a obscure handle to
* be passed to all functions below. The tag argument is a short string
* unique to the program invoking tr_init(), it is currently used as
* part of saved torrent files' names to prevent one frontend from
* deleting a torrent used by another. The following tags are used:
* beos cli daemon gtk macosx
**********************************************************************/
typedef struct tr_handle_s tr_handle_t;
tr_handle_t * tr_init( const char * tag );
typedef struct tr_tracker_info_s tr_tracker_info_t;
/***********************************************************************
* tr_setMessageLevel
***********************************************************************
* Set the level of messages to be output or queued
**********************************************************************/
#define TR_MSG_ERR 1
#define TR_MSG_INF 2
#define TR_MSG_DBG 3
void tr_setMessageLevel( int );
int tr_getMessageLevel( void );
/***********************************************************************
* tr_setMessageQueuing
***********************************************************************
* Enable or disable message queuing
**********************************************************************/
typedef struct tr_msg_list_s tr_msg_list_t;
void tr_setMessageQueuing( int );
/***********************************************************************
* tr_getQueuedMessages
***********************************************************************
* Return a list of queued messages
**********************************************************************/
tr_msg_list_t * tr_getQueuedMessages( void );
void tr_freeMessageList( tr_msg_list_t * list );
/***********************************************************************
* tr_getPrefsDirectory
***********************************************************************
* Returns the full path to a directory which can be used to store
* preferences. The string belongs to libtransmission, do not free it.
**********************************************************************/
const char * tr_getPrefsDirectory( void );
/***********************************************************************
* tr_setBindPort
***********************************************************************
* Sets the port to listen for incoming peer connections.
* This can be safely called even with active torrents.
**********************************************************************/
void tr_setBindPort( tr_handle_t *, int );
/***********************************************************************
* tr_natTraversalEnable
* tr_natTraversalDisable
***********************************************************************
* Enable or disable NAT traversal using NAT-PMP or UPnP IGD.
**********************************************************************/
void tr_natTraversalEnable( tr_handle_t *, int enable );
/***********************************************************************
* tr_handleStatus
***********************************************************************
* Returns some status info for the given handle.
**********************************************************************/
typedef struct tr_handle_status_s tr_handle_status_t;
tr_handle_status_t * tr_handleStatus( tr_handle_t * );
/***********************************************************************
* tr_setGlobalUploadLimit
***********************************************************************
* Sets the total upload rate limit in KB/s
**********************************************************************/
void tr_setGlobalUploadLimit( tr_handle_t *, int );
/***********************************************************************
* tr_setGlobalDownloadLimit
***********************************************************************
* Sets the total download rate limit in KB/s
**********************************************************************/
void tr_setGlobalDownloadLimit( tr_handle_t *, int );
/***********************************************************************
* tr_torrentCount
***********************************************************************
* Returns the count of open torrents
**********************************************************************/
int tr_torrentCount( tr_handle_t * h );
/***********************************************************************
* tr_torrentIterate
***********************************************************************
* Iterates on open torrents
**********************************************************************/
typedef struct tr_torrent_s tr_torrent_t;
typedef void (*tr_callback_t) ( tr_torrent_t *, void * );
void tr_torrentIterate( tr_handle_t *, tr_callback_t, void * );
/***********************************************************************
*** Speed Limits
**/
typedef enum
{
TR_SPEEDLIMIT_GLOBAL, /* indirectly follow the global pool's limit */
TR_SPEEDLIMIT_SINGLE, /* directly follow tr_torrentSetMaxSpeed() */
TR_SPEEDLIMIT_UNLIMITED /* no limits at all */
}
tr_speedlimit_t;
enum { TR_UP, TR_DOWN };
void tr_torrentSetSpeedMode( tr_torrent_t * tor,
int up_or_down,
tr_speedlimit_t mode );
tr_speedlimit_t tr_torrentGetSpeedMode( const tr_torrent_t * tor,
int up_or_down);
void tr_torrentSetSpeedLimit( tr_torrent_t * tor,
int up_or_down,
int single_KiB_sec );
int tr_torrentGetSpeedLimit( const tr_torrent_t * tor,
int up_or_down );
/***********************************************************************
* Torrent Priorities
**********************************************************************/
enum
{
TR_PRI_LOW = -1,
TR_PRI_NORMAL = 0, /* since NORMAL is 0, memset initializes nicely */
TR_PRI_HIGH = 1
};
typedef int8_t tr_priority_t;
/* set a batch of files to a particular priority. */
void tr_torrentSetFilePriorities( tr_torrent_t * tor,
int * files,
int fileCount,
tr_priority_t priority );
/* single-file form of tr_torrentPrioritizeFiles.
* priority must be one of TR_PRI_NORMAL, _HIGH, or _LOW */
void tr_torrentSetFilePriority( tr_torrent_t *, int file, tr_priority_t priority );
/* returns a malloc()ed array of tor->info.fileCount items,
* each holding a value of TR_PRI_NORMAL, _HIGH, or _LOW.
free the array when done. */
tr_priority_t* tr_torrentGetFilePriorities( const tr_torrent_t * );
/* single-file form of tr_torrentGetFilePriorities.
* returns one of TR_PRI_NORMAL, _HIGH, or _LOW. */
tr_priority_t tr_torrentGetFilePriority( const tr_torrent_t *, int file );
/* returns true if the file's `download' flag is set */
int tr_torrentGetFileDL( const tr_torrent_t *, int file );
/* set a batch of files to be downloaded or not. */
void tr_torrentSetFileDLs ( tr_torrent_t * tor,
int * files,
int fileCount,
int do_download );
/* single-file form of tr_torrentSetFileDLs */
void tr_torrentSetFileDL( tr_torrent_t *, int file, int do_download );
/***********************************************************************
* tr_torrentRates
***********************************************************************
* Gets the total download and upload rates
**********************************************************************/
void tr_torrentRates( tr_handle_t *, float *, float * );
/***********************************************************************
* tr_close
***********************************************************************
* Frees memory allocated by tr_init.
**********************************************************************/
void tr_close( tr_handle_t * );
/***********************************************************************
* tr_torrentInit
***********************************************************************
* Opens and parses torrent file at 'path'. If the file exists and is
* a valid torrent file, returns an handle and adds it to the list of
* torrents (but doesn't start it). Returns NULL and sets *error
* otherwise. If hash is not NULL and the torrent is already loaded
* then it's 20-byte hash will be copied in. If the TR_FLAG_SAVE flag
* is passed then a copy of the torrent file will be saved.
**********************************************************************/
#define TR_EINVALID 1
#define TR_EUNSUPPORTED 2
#define TR_EDUPLICATE 3
#define TR_EOTHER 666
tr_torrent_t * tr_torrentInit( tr_handle_t * handle,
const char * metainfo_filename,
const char * destination,
int flags,
int * setme_error );
typedef struct tr_info_s tr_info_t;
/**
* Parses the specified metainfo file.
*
* Returns TR_OK if it parsed and can be added to Transmission.
* Returns TR_INVALID if it couldn't be parsed.
* Returns TR_EDUPLICATE if it parsed but can't be added.
*
* "destination" can be NULL if you don't need to know whether
* or not the torrent can be added.
*
" "setme_info" can be NULL if you don't need the information.
* If the metainfo can be parsed and setme_info is non-NULL,
* it will be filled with the metadata's info. You'll need to
* call tr_metainfoFree( setme_info ) when done with it.
*/
int tr_torrentParse( const tr_handle_t * handle,
const char * metainfo_filename,
const char * destination,
tr_info_t * setme_info );
/**
* Parses the cached metainfo file that matches the given hash string.
* See tr_torrentParse() for a description of the arguments
*/
int
tr_torrentParseHash( const tr_handle_t * h,
const char * hashStr,
const char * destination,
tr_info_t * setme_info );
/***********************************************************************
* tr_torrentInitData
***********************************************************************
* Like tr_torrentInit, except the actual torrent data is passed in
* instead of the filename.
**********************************************************************/
tr_torrent_t * tr_torrentInitData( tr_handle_t *,
const uint8_t * data, size_t size,
const char * destination,
int flags, int * error );
/***********************************************************************
* tr_torrentInitSaved
***********************************************************************
* Opens and parses a torrent file as with tr_torrentInit, only taking
* the hash string of a saved torrent file instead of a filename. There
* are currently no valid flags for this function.
**********************************************************************/
tr_torrent_t * tr_torrentInitSaved( tr_handle_t *,
const char * hashStr,
const char * destination,
int flags, int * error );
/***********************************************************************
* tr_torrentDisablePex
***********************************************************************
* Disable or enable peer exchange for this torrent. Peer exchange is
* enabled by default, except for private torrents where pex is
* disabled and cannot be enabled.
**********************************************************************/
void tr_torrentDisablePex( tr_torrent_t *, int disable );
const tr_info_t * tr_torrentInfo( const tr_torrent_t * );
#if 0
/***********************************************************************
* tr_torrentScrape
***********************************************************************
* Asks the tracker for the count of seeders and leechers. Returns 0
* and fills 's' and 'l' if successful. Otherwise returns 1 if the
* tracker doesn't support the scrape protocol, is unreachable or
* replied with some error. tr_torrentScrape may block up to 20 seconds
* before returning.
**********************************************************************/
int tr_torrentScrape( tr_torrent_t *, int * s, int * l, int * d );
#endif
void tr_torrentSetFolder( tr_torrent_t *, const char * );
const char * tr_torrentGetFolder( const tr_torrent_t * );
/***********************************************************************
* tr_torrentStart
***********************************************************************
* Starts downloading. The download is launched in a seperate thread,
* therefore tr_torrentStart returns immediately.
**********************************************************************/
void tr_torrentStart( tr_torrent_t * );
/***********************************************************************
* tr_torrentStop
***********************************************************************
* Stops downloading and notices the tracker that we are leaving. The
* thread keeps running while doing so.
* The thread will eventually be joined, either:
* - by tr_torrentStat when the tracker has been successfully noticed,
* - by tr_torrentStat if the tracker could not be noticed within 60s,
* - by tr_torrentClose if you choose to remove the torrent without
* waiting any further.
**********************************************************************/
void tr_torrentStop( tr_torrent_t * );
/***********************************************************************
* tr_getComplete, tr_getIncomplete and tr_getPartial
***********************************************************************
* The first call after a torrent changed state returns 1. Returns 0
* in other cases.
**********************************************************************/
int tr_getIncomplete( tr_torrent_t * tor );
int tr_getDone( tr_torrent_t * tor );
int tr_getComplete( tr_torrent_t * tor );
/***********************************************************************
* tr_manualUpdate
***********************************************************************
* Reannounce to tracker regardless of wait interval
**********************************************************************/
void tr_manualUpdate( tr_torrent_t * );
/***********************************************************************
* tr_torrentStat
***********************************************************************
* Returns a pointer to an tr_stat_t structure with updated information
* on the torrent. The structure belongs to libtransmission (do not
* free it) and is guaranteed to be unchanged until the next call to
* tr_torrentStat.
* The interface should call this function every second or so in order
* to update itself.
**********************************************************************/
typedef struct tr_stat_s tr_stat_t;
const tr_stat_t * tr_torrentStat( tr_torrent_t * );
/***********************************************************************
* tr_torrentPeers
***********************************************************************/
typedef struct tr_peer_stat_s tr_peer_stat_t;
tr_peer_stat_t * tr_torrentPeers( const tr_torrent_t *, int * peerCount );
void tr_torrentPeersFree( tr_peer_stat_t *, int peerCount );
typedef struct tr_file_stat_s tr_file_stat_t;
tr_file_stat_t * tr_torrentFiles( const tr_torrent_t *, int * fileCount );
void tr_torrentFilesFree( tr_file_stat_t *, int 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_t *, int8_t * tab, int size );
void tr_torrentAmountFinished( const tr_torrent_t * tor, float * tab, int size );
/***********************************************************************
* tr_torrentRemoveSaved
***********************************************************************
* Removes the saved copy of a torrent file for torrents which the
* TR_FLAG_SAVE flag is set.
**********************************************************************/
void tr_torrentRemoveSaved( tr_torrent_t * );
void tr_torrentRecheck( tr_torrent_t * );
/***********************************************************************
* tr_torrentClose
***********************************************************************
* Frees memory allocated by tr_torrentInit. If the torrent was running,
* it is stopped first.
**********************************************************************/
void tr_torrentClose( tr_torrent_t * );
/***********************************************************************
* tr_info_s
**********************************************************************/
typedef struct tr_file_s
{
uint64_t length; /* Length of the file, in bytes */
char name[MAX_PATH_LENGTH]; /* Path to the file */
int8_t priority; /* TR_PRI_HIGH, _NORMAL, or _LOW */
int8_t dnd; /* nonzero if the file shouldn't be downloaded */
int firstPiece; /* We need pieces [firstPiece... */
int lastPiece; /* ...lastPiece] to dl this file */
uint64_t offset; /* file begins at the torrent's nth byte */
}
tr_file_t;
typedef struct tr_piece_s
{
uint8_t hash[SHA_DIGEST_LENGTH]; /* pieces hash */
int8_t priority; /* TR_PRI_HIGH, _NORMAL, or _LOW */
int8_t dnd; /* nonzero if the piece shouldn't be downloaded */
}
tr_piece_t;
struct tr_info_s
{
/* Path to torrent */
char torrent[MAX_PATH_LENGTH];
/* General info */
uint8_t hash[SHA_DIGEST_LENGTH];
char hashString[2*SHA_DIGEST_LENGTH+1];
char name[MAX_PATH_LENGTH];
/* Flags */
#define TR_FLAG_SAVE 0x01 /* save a copy of the torrent file */
#define TR_FLAG_PRIVATE 0x02 /* do not share information for this torrent */
#define TR_FLAG_PAUSED 0x04 /* don't start the torrent when adding it */
int flags;
/* Tracker info */
struct
{
tr_tracker_info_t * list;
int count;
} * trackerList;
int trackerTiers;
/* Torrent info */
char comment[MAX_PATH_LENGTH];
char creator[MAX_PATH_LENGTH];
int dateCreated;
/* Pieces info */
int pieceSize;
int pieceCount;
uint64_t totalSize;
tr_piece_t * pieces;
/* Files info */
int multifile;
int fileCount;
tr_file_t * files;
};
typedef enum
{
TR_STATUS_CHECK_WAIT = (1<<0), /* Waiting in queue to check files */
TR_STATUS_CHECK = (1<<1), /* Checking files */
TR_STATUS_DOWNLOAD = (1<<2), /* Downloading */
TR_STATUS_DONE = (1<<3), /* not at 100% so can't tell the tracker
we're a seeder, but due to DND files
there's nothing we want right now */
TR_STATUS_SEED = (1<<4), /* Seeding */
TR_STATUS_STOPPING = (1<<5), /* Stopping -- closing connections, etc. */
TR_STATUS_STOPPED = (1<<6) /* Torrent is stopped */
}
torrent_status_t;
#define TR_STATUS_ACTIVE \
(TR_STATUS_CHECK_WAIT|TR_STATUS_CHECK|TR_STATUS_DOWNLOAD|TR_STATUS_DONE|TR_STATUS_SEED)
#define TR_STATUS_INACTIVE \
(TR_STATUS_STOPPING|TR_STATUS_STOPPED)
typedef enum
{
TR_CP_INCOMPLETE, /* doesn't have all the desired pieces */
TR_CP_DONE, /* has all the pieces but the DND ones */
TR_CP_COMPLETE /* has every piece */
}
cp_status_t;
/***********************************************************************
* tr_stat_s
**********************************************************************/
struct tr_stat_s
{
torrent_status_t status;
cp_status_t cpStatus;
int error;
char errorString[128];
int cannotConnect;
const tr_tracker_info_t * tracker;
float percentComplete;
float percentDone;
float rateDownload;
float rateUpload;
int eta;
int peersTotal;
int peersConnected;
int peersFrom[TR_PEER_FROM__MAX];
int peersSendingToUs;
int peersGettingFromUs;
int seeders;
int leechers;
int completedFromTracker;
uint64_t left;
uint64_t downloaded;
uint64_t downloadedValid;
uint64_t uploaded;
float swarmspeed;
#define TR_RATIO_NA -1
float ratio;
uint64_t startDate;
uint64_t activityDate;
};
struct tr_file_stat_s
{
uint64_t bytesCompleted;
float progress;
cp_status_t completionStatus;
};
struct tr_peer_stat_s
{
char addr[INET_ADDRSTRLEN];
const char * client;
int isConnected;
int from;
float progress;
int port;
int isDownloading;
int isUploading;
float downloadFromRate;
float uploadToRate;
};
struct tr_msg_list_s
{
int level;
time_t when;
char * message;
struct tr_msg_list_s * next;
};
struct tr_tracker_info_s
{
char * address;
int port;
char * announce;
char * scrape;
};
struct tr_handle_status_s
{
#define TR_NAT_TRAVERSAL_MAPPING 1
#define TR_NAT_TRAVERSAL_MAPPED 2
#define TR_NAT_TRAVERSAL_NOTFOUND 3
#define TR_NAT_TRAVERSAL_ERROR 4
#define TR_NAT_TRAVERSAL_UNMAPPING 5
#define TR_NAT_TRAVERSAL_DISABLED 6
#define TR_NAT_TRAVERSAL_IS_DISABLED( st ) \
( TR_NAT_TRAVERSAL_DISABLED == (st) || TR_NAT_TRAVERSAL_UNMAPPING == (st) )
int natTraversalStatus;
int publicPort;
};
#ifdef __TRANSMISSION__
# include "internal.h"
#endif
#ifdef __cplusplus
}
#endif
#endif
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