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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 PRIu64
# define PRIu64 "lld"
#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
#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 0x0000000F
#define TR_ERROR_IO_PARENT 0x80000001
#define TR_ERROR_IO_PERMISSIONS 0x80000002
#define TR_ERROR_IO_OTHER 0x80000008
/* Misc */
#define TR_ERROR_TC_MASK 0x000000F0
#define TR_ERROR_TC_ERROR 0x80000010
#define TR_ERROR_TC_WARNING 0x80000020
/***********************************************************************
* 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.
**********************************************************************/
char * tr_getPrefsDirectory();
/***********************************************************************
* 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 * );
void tr_setUseCustomLimit( tr_torrent_t * tor, int limit );
void tr_setUploadLimit( tr_torrent_t * tor, int limit );
void tr_setDownloadLimit( tr_torrent_t * tor, int limit );
/***********************************************************************
* 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 *, const char * path,
uint8_t * hash, int flags, int * error );
/***********************************************************************
* 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 *, uint8_t * data,
size_t size, uint8_t * hash,
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,
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 );
/***********************************************************************
* tr_torrentScrape
***********************************************************************
* Return torrent metainfo.
**********************************************************************/
typedef struct tr_info_s tr_info_t;
tr_info_t * tr_torrentInfo( tr_torrent_t * );
/***********************************************************************
* 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 );
/***********************************************************************
* tr_torrentStart
***********************************************************************
* Starts downloading. The download is launched in a seperate thread,
* therefore tr_torrentStart returns immediately.
**********************************************************************/
void tr_torrentSetFolder( tr_torrent_t *, const char * );
char * tr_torrentGetFolder( tr_torrent_t * );
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_getFinished
***********************************************************************
* The first call after a torrent is completed returns 1. Returns 0
* in other cases.
**********************************************************************/
int tr_getFinished( tr_torrent_t * );
/***********************************************************************
* 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;
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( tr_torrent_t *, int * peerCount );
void tr_torrentPeersFree( tr_peer_stat_t *, int peerCount );
/***********************************************************************
* 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( tr_torrent_t *, int8_t * tab, int size );
void tr_torrentAmountFinished( tr_torrent_t * tor, float * tab, int size );
/***********************************************************************
* tr_torrentCompletion
***********************************************************************
* Returns the completion progress for each file in the torrent as an
* array of floats the same size and order as in tr_info_t. Free the
* array when done.
**********************************************************************/
float * tr_torrentCompletion( tr_torrent_t * tor );
/***********************************************************************
* 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 * );
/***********************************************************************
* tr_torrentClose
***********************************************************************
* Frees memory allocated by tr_torrentInit. If the torrent was running,
* you must call tr_torrentStop() before closing it.
**********************************************************************/
void tr_torrentClose( tr_handle_t *, 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 */
}
tr_file_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 */
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;
uint8_t * pieces;
/* Files info */
int multifile;
int fileCount;
tr_file_t * files;
};
/***********************************************************************
* tr_stat_s
**********************************************************************/
struct tr_stat_s
{
#define TR_STATUS_CHECK 0x001 /* Checking files */
#define TR_STATUS_DOWNLOAD 0x002 /* Downloading */
#define TR_STATUS_SEED 0x004 /* Seeding */
#define TR_STATUS_STOPPING 0x008 /* Sending 'stopped' to the tracker */
#define TR_STATUS_STOPPED 0x010 /* Sent 'stopped' but thread still
running (for internal use only) */
#define TR_STATUS_PAUSE 0x020 /* Paused */
#define TR_STATUS_ACTIVE (TR_STATUS_CHECK|TR_STATUS_DOWNLOAD|TR_STATUS_SEED)
#define TR_STATUS_INACTIVE (TR_STATUS_STOPPING|TR_STATUS_STOPPED|TR_STATUS_PAUSE)
int status;
int error;
char errorString[128];
int cannotConnect;
tr_tracker_info_t * tracker;
float progress;
float rateDownload;
float rateUpload;
int eta;
int peersTotal;
int peersFrom[TR_PEER_FROM__MAX];
int peersUploading;
int peersDownloading;
int seeders;
int leechers;
int completedFromTracker;
uint64_t downloaded;
uint64_t uploaded;
float swarmspeed;
#define TR_RATIO_NA -1
#define TR_RATIO_INF -2
float ratio;
};
struct tr_peer_stat_s
{
char addr[INET_ADDRSTRLEN];
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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