309 lines
8.3 KiB
C
309 lines
8.3 KiB
C
/******************************************************************************
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* $Id$
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*
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* Copyright (c) 2005-2007 Transmission authors and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/types.h> /* stat */
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#include <sys/stat.h> /* stat */
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#include <unistd.h> /* stat */
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#include <dirent.h> /* opendir */
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#include <event.h>
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#include "transmission.h"
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#include "fdlimit.h"
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#include "list.h"
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#include "net.h"
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#include "platform.h"
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#include "ratecontrol.h"
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#include "shared.h"
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#include "utils.h"
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/* Generate a peer id : "-TRxyzb-" + 12 random alphanumeric
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characters, where x is the major version number, y is the
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minor version number, z is the maintenance number, and b
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designates beta (Azureus-style) */
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void
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tr_peerIdNew ( char * buf, int buflen )
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{
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int i;
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assert( buflen == TR_ID_LEN + 1 );
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snprintf( buf, TR_ID_LEN, "%s", PEERID_PREFIX );
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assert( strlen(buf) == 8 );
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for( i=8; i<TR_ID_LEN; ++i ) {
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const int r = tr_rand( 36 );
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buf[i] = ( r < 26 ) ? ( 'a' + r ) : ( '0' + r - 26 ) ;
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}
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buf[TR_ID_LEN] = '\0';
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}
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static void
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libeventThreadFunc( void * unused UNUSED )
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{
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tr_dbg( "libevent thread starting" );
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event_init( );
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for ( ;; )
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{
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event_dispatch( );
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tr_wait( 50 ); /* 1/20th of a second */
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}
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tr_dbg( "libevent thread exiting" );
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}
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/***********************************************************************
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* tr_init
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***********************************************************************
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* Allocates a tr_handle_t structure and initializes a few things
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**********************************************************************/
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tr_handle_t * tr_init( const char * tag )
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{
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tr_handle_t * h;
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int i;
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tr_msgInit();
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tr_threadNew( libeventThreadFunc, NULL, "libeventThreadFunc" );
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tr_netInit();
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tr_netResolveThreadInit();
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h = calloc( 1, sizeof( tr_handle_t ) );
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if( NULL == h )
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{
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return NULL;
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}
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h->tag = strdup( tag );
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if( NULL == h->tag )
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{
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free( h );
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return NULL;
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}
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/* Random key */
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for( i=0; i < TR_KEY_LEN; ++i )
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{
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const int r = tr_rand( 36 );
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h->key[i] = ( r < 26 ) ? ( 'a' + r ) : ( '0' + r - 26 ) ;
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}
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/* Azureus identity */
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for( i=0; i < TR_AZ_ID_LEN; ++i )
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{
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h->azId[i] = tr_rand( 0xff );
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}
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#ifndef WIN32
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/* Don't exit when writing on a broken socket */
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signal( SIGPIPE, SIG_IGN );
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#endif
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/* Initialize rate and file descripts controls */
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h->upload = tr_rcInit();
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h->download = tr_rcInit();
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tr_fdInit();
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h->shared = tr_sharedInit( h );
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tr_inf( TR_NAME " " LONG_VERSION_STRING " started" );
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return h;
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}
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/***********************************************************************
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* tr_setBindPort
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***********************************************************************
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*
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**********************************************************************/
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void tr_setBindPort( tr_handle_t * h, int port )
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{
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h->isPortSet = 1;
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tr_sharedSetPort( h->shared, port );
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}
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void tr_natTraversalEnable( tr_handle_t * h, int enable )
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{
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tr_sharedLock( h->shared );
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tr_sharedTraversalEnable( h->shared, enable );
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tr_sharedUnlock( h->shared );
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}
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tr_handle_status_t * tr_handleStatus( tr_handle_t * h )
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{
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tr_handle_status_t * s;
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h->statCur = ( h->statCur + 1 ) % 2;
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s = &h->stats[h->statCur];
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tr_sharedLock( h->shared );
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s->natTraversalStatus = tr_sharedTraversalStatus( h->shared );
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s->publicPort = tr_sharedGetPublicPort( h->shared );
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tr_sharedUnlock( h->shared );
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return s;
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}
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/***
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****
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***/
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void
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tr_setUseGlobalSpeedLimit( tr_handle_t * h,
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int up_or_down,
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int use_flag )
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{
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char * ch = up_or_down==TR_UP ? &h->useUploadLimit
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: &h->useDownloadLimit;
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*ch = use_flag;
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}
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void
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tr_setGlobalSpeedLimit( tr_handle_t * h,
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int up_or_down,
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int KiB_sec )
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{
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if( up_or_down == TR_DOWN )
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tr_rcSetLimit( h->download, KiB_sec );
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else {
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tr_rcSetLimit( h->upload, KiB_sec );
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tr_sharedSetLimit( h->shared, KiB_sec );
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}
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}
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void
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tr_getGlobalSpeedLimit( tr_handle_t * h,
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int up_or_down,
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int * setme_enabled,
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int * setme_KiBsec )
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{
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if( setme_enabled != NULL )
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*setme_enabled = up_or_down==TR_UP ? h->useUploadLimit
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: h->useDownloadLimit;
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if( setme_KiBsec != NULL )
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*setme_KiBsec = tr_rcGetLimit( up_or_down==TR_UP ? h->upload
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: h->download );
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}
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void tr_torrentRates( tr_handle_t * h, float * dl, float * ul )
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{
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tr_torrent_t * tor;
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*dl = 0.0;
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*ul = 0.0;
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tr_sharedLock( h->shared );
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for( tor = h->torrentList; tor; tor = tor->next )
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{
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tr_torrentReaderLock( tor );
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if( tor->cpStatus == TR_CP_INCOMPLETE )
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*dl += tr_rcRate( tor->download );
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*ul += tr_rcRate( tor->upload );
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tr_torrentReaderUnlock( tor );
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}
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tr_sharedUnlock( h->shared );
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}
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int tr_torrentCount( tr_handle_t * h )
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{
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return h->torrentCount;
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}
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void tr_torrentIterate( tr_handle_t * h, tr_callback_t func, void * d )
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{
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tr_torrent_t * tor, * next;
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for( tor = h->torrentList; tor; tor = next )
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{
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next = tor->next;
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func( tor, d );
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}
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}
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void tr_close( tr_handle_t * h )
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{
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tr_rcClose( h->upload );
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tr_rcClose( h->download );
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tr_sharedClose( h->shared );
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tr_fdClose();
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free( h->tag );
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free( h );
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tr_netResolveThreadClose();
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}
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tr_torrent_t **
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tr_loadTorrents ( tr_handle_t * h,
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const char * destination,
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int flags,
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int * setmeCount )
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{
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int i, n = 0;
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struct stat sb;
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DIR * odir = NULL;
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const char * torrentDir = tr_getTorrentsDirectory( );
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tr_torrent_t ** torrents;
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tr_list_t *l=NULL, *list=NULL;
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if( !stat( torrentDir, &sb )
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&& S_ISDIR( sb.st_mode )
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&& (( odir = opendir ( torrentDir ) )) )
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{
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struct dirent *d;
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for (d = readdir( odir ); d!=NULL; d=readdir( odir ) )
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{
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if( d->d_name && d->d_name[0]!='.' ) /* skip dotfiles, ., and .. */
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{
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tr_torrent_t * tor;
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char path[MAX_PATH_LENGTH];
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tr_buildPath( path, sizeof(path), torrentDir, d->d_name, NULL );
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tor = tr_torrentInit( h, path, destination, flags, NULL );
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if( tor != NULL ) {
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tr_list_append( &list, tor );
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//fprintf (stderr, "#%d - %s\n", n, tor->info.name );
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n++;
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}
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}
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}
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closedir( odir );
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}
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torrents = tr_new( tr_torrent_t*, n );
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for( i=0, l=list; l!=NULL; l=l->next )
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torrents[i++] = (tr_torrent_t*) l->data;
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assert( i==n );
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tr_list_free( &list );
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*setmeCount = n;
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tr_inf( "Loaded %d torrents from disk", *setmeCount );
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return torrents;
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}
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