transmission/libtransmission/transmission.c

290 lines
7.8 KiB
C

/******************************************************************************
* $Id$
*
* 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.
*****************************************************************************/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <sys/types.h> /* stat */
#include <sys/stat.h> /* stat */
#include <unistd.h> /* stat */
#include <dirent.h> /* opendir */
#include "transmission.h"
#include "fdlimit.h"
#include "list.h"
#include "net.h"
#include "platform.h"
#include "ratecontrol.h"
#include "shared.h"
#include "trevent.h"
#include "utils.h"
/* Generate a peer id : "-TRxyzb-" + 12 random alphanumeric
characters, where x is the major version number, y is the
minor version number, z is the maintenance number, and b
designates beta (Azureus-style) */
void
tr_peerIdNew ( char * buf, int buflen )
{
int i;
assert( buflen == TR_ID_LEN + 1 );
snprintf( buf, TR_ID_LEN, "%s", PEERID_PREFIX );
assert( strlen(buf) == 8 );
for( i=8; i<TR_ID_LEN; ++i ) {
const int r = tr_rand( 36 );
buf[i] = ( r < 26 ) ? ( 'a' + r ) : ( '0' + r - 26 ) ;
}
buf[TR_ID_LEN] = '\0';
}
/***
****
***/
/***********************************************************************
* tr_init
***********************************************************************
* Allocates a tr_handle_t structure and initializes a few things
**********************************************************************/
tr_handle_t * tr_init( const char * tag )
{
tr_handle_t * h;
int i;
tr_msgInit();
h = tr_new0( tr_handle_t, 1 );
if( !h )
return NULL;
tr_eventInit( h );
tr_netInit();
tr_netResolveThreadInit();
h->tag = strdup( tag );
if( !h->tag ) {
free( h );
return NULL;
}
/* Azureus identity */
for( i=0; i < TR_AZ_ID_LEN; ++i )
h->azId[i] = tr_rand( 0xff );
#ifndef WIN32
/* Don't exit when writing on a broken socket */
signal( SIGPIPE, SIG_IGN );
#endif
/* Initialize rate and file descripts controls */
h->upload = tr_rcInit();
h->download = tr_rcInit();
tr_fdInit();
h->shared = tr_sharedInit( h );
tr_inf( TR_NAME " " LONG_VERSION_STRING " started" );
return h;
}
/***********************************************************************
* tr_setBindPort
***********************************************************************
*
**********************************************************************/
void tr_setBindPort( tr_handle_t * h, int port )
{
h->isPortSet = 1;
tr_sharedSetPort( h->shared, port );
}
void tr_natTraversalEnable( tr_handle_t * h, int enable )
{
tr_sharedLock( h->shared );
tr_sharedTraversalEnable( h->shared, enable );
tr_sharedUnlock( h->shared );
}
tr_handle_status_t * tr_handleStatus( tr_handle_t * h )
{
tr_handle_status_t * s;
h->statCur = ( h->statCur + 1 ) % 2;
s = &h->stats[h->statCur];
tr_sharedLock( h->shared );
s->natTraversalStatus = tr_sharedTraversalStatus( h->shared );
s->publicPort = tr_sharedGetPublicPort( h->shared );
tr_sharedUnlock( h->shared );
return s;
}
/***
****
***/
void
tr_setUseGlobalSpeedLimit( tr_handle_t * h,
int up_or_down,
int use_flag )
{
char * ch = up_or_down==TR_UP ? &h->useUploadLimit
: &h->useDownloadLimit;
*ch = use_flag;
}
void
tr_setGlobalSpeedLimit( tr_handle_t * h,
int up_or_down,
int KiB_sec )
{
if( up_or_down == TR_DOWN )
tr_rcSetLimit( h->download, KiB_sec );
else {
tr_rcSetLimit( h->upload, KiB_sec );
tr_sharedSetLimit( h->shared, KiB_sec );
}
}
void
tr_getGlobalSpeedLimit( tr_handle_t * h,
int up_or_down,
int * setme_enabled,
int * setme_KiBsec )
{
if( setme_enabled != NULL )
*setme_enabled = up_or_down==TR_UP ? h->useUploadLimit
: h->useDownloadLimit;
if( setme_KiBsec != NULL )
*setme_KiBsec = tr_rcGetLimit( up_or_down==TR_UP ? h->upload
: h->download );
}
void tr_torrentRates( tr_handle_t * h, float * dl, float * ul )
{
tr_torrent_t * tor;
*dl = 0.0;
*ul = 0.0;
tr_sharedLock( h->shared );
for( tor = h->torrentList; tor; tor = tor->next )
{
tr_torrentReaderLock( tor );
if( tor->cpStatus == TR_CP_INCOMPLETE )
*dl += tr_rcRate( tor->download );
*ul += tr_rcRate( tor->upload );
tr_torrentReaderUnlock( tor );
}
tr_sharedUnlock( h->shared );
}
int tr_torrentCount( tr_handle_t * h )
{
return h->torrentCount;
}
void tr_torrentIterate( tr_handle_t * h, tr_callback_t func, void * d )
{
tr_torrent_t * tor, * next;
for( tor = h->torrentList; tor; tor = next )
{
next = tor->next;
func( tor, d );
}
}
void tr_close( tr_handle_t * h )
{
tr_rcClose( h->upload );
tr_rcClose( h->download );
tr_eventClose( h );
tr_sharedClose( h->shared );
tr_fdClose();
free( h->tag );
free( h );
tr_netResolveThreadClose();
}
tr_torrent_t **
tr_loadTorrents ( tr_handle_t * h,
const char * destination,
int flags,
int * setmeCount )
{
int i, n = 0;
struct stat sb;
DIR * odir = NULL;
const char * torrentDir = tr_getTorrentsDirectory( );
tr_torrent_t ** torrents;
tr_list_t *l=NULL, *list=NULL;
if( !stat( torrentDir, &sb )
&& S_ISDIR( sb.st_mode )
&& (( odir = opendir ( torrentDir ) )) )
{
struct dirent *d;
for (d = readdir( odir ); d!=NULL; d=readdir( odir ) )
{
if( d->d_name && d->d_name[0]!='.' ) /* skip dotfiles, ., and .. */
{
tr_torrent_t * tor;
char path[MAX_PATH_LENGTH];
tr_buildPath( path, sizeof(path), torrentDir, d->d_name, NULL );
tor = tr_torrentInit( h, path, destination, flags, NULL );
if( tor != NULL ) {
tr_list_append( &list, tor );
//fprintf (stderr, "#%d - %s\n", n, tor->info.name );
n++;
}
}
}
closedir( odir );
}
torrents = tr_new( tr_torrent_t*, n );
for( i=0, l=list; l!=NULL; l=l->next )
torrents[i++] = (tr_torrent_t*) l->data;
assert( i==n );
tr_list_free( &list );
*setmeCount = n;
tr_inf( "Loaded %d torrents from disk", *setmeCount );
return torrents;
}