mirror of
https://github.com/transmission/transmission
synced 2024-12-25 09:13:06 +00:00
478 lines
12 KiB
C
478 lines
12 KiB
C
/******************************************************************************
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* $Id$
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*
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* Copyright (c) 2005-2008 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 "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 "peer-mgr.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 "stats.h"
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#include "torrent.h"
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#include "tracker.h"
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#include "trevent.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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uint8_t*
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tr_peerIdNew( void )
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{
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int i;
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int val;
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int total = 0;
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uint8_t * buf = tr_new( uint8_t, 21 );
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const char * pool = "0123456789abcdefghijklmnopqrstuvwxyz";
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const int base = 36;
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memcpy( buf, PEERID_PREFIX, 8 );
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for( i=8; i<19; ++i ) {
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val = tr_rand( base );
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total += val;
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buf[i] = pool[val];
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}
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val = total % base ? base - (total % base) : 0;
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total += val;
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buf[19] = pool[val];
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buf[20] = '\0';
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return buf;
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}
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const uint8_t*
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tr_getPeerId( void )
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{
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static uint8_t * id = NULL;
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if( id == NULL )
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id = tr_peerIdNew( );
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return id;
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}
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/***
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****
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***/
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tr_encryption_mode
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tr_getEncryptionMode( tr_handle * handle )
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{
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assert( handle != NULL );
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return handle->encryptionMode;
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}
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void
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tr_setEncryptionMode( tr_handle * handle, tr_encryption_mode mode )
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{
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assert( handle != NULL );
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assert( mode==TR_ENCRYPTION_PREFERRED
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|| mode==TR_ENCRYPTION_REQUIRED
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|| mode==TR_PLAINTEXT_PREFERRED );
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handle->encryptionMode = mode;
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}
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/***
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****
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***/
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tr_handle *
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tr_initFull( const char * tag,
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int isPexEnabled,
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int isNatEnabled,
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int publicPort,
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int encryptionMode,
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int isUploadLimitEnabled,
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int uploadLimit,
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int isDownloadLimitEnabled,
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int downloadLimit,
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int globalPeerLimit,
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int messageLevel,
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int isMessageQueueingEnabled )
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{
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tr_handle * h;
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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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tr_msgInit( );
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tr_setMessageLevel( messageLevel );
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tr_setMessageQueuing( isMessageQueueingEnabled );
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h = tr_new0( tr_handle, 1 );
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h->lock = tr_lockNew( );
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h->isPexEnabled = isPexEnabled ? 1 : 0;
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h->encryptionMode = encryptionMode;
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tr_netInit(); /* must go before tr_eventInit */
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tr_eventInit( h );
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while( !h->events )
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tr_wait( 50 );
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h->tag = strdup( tag );
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if( !h->tag ) {
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free( h );
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return NULL;
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}
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h->peerMgr = tr_peerMgrNew( h );
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/* Initialize rate and file descripts controls */
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h->upload = tr_rcInit();
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tr_rcSetLimit( h->upload, uploadLimit );
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h->useUploadLimit = isUploadLimitEnabled;
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h->download = tr_rcInit();
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tr_rcSetLimit( h->download, downloadLimit );
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h->useDownloadLimit = isDownloadLimitEnabled;
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tr_fdInit( globalPeerLimit );
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h->shared = tr_sharedInit( h, isNatEnabled, publicPort );
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h->isPortSet = publicPort >= 0;
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tr_inf( TR_NAME " " LONG_VERSION_STRING " started" );
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tr_statsInit( h );
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return h;
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}
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tr_handle * tr_init( const char * tag )
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{
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return tr_initFull( tag,
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TRUE, /* pex enabled */
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FALSE, /* nat enabled */
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-1, /* public port */
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TR_ENCRYPTION_PREFERRED, /* encryption mode */
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FALSE, /* use upload speed limit? */
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-1, /* upload speed limit */
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FALSE, /* use download speed limit? */
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-1, /* download speed limit */
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200, /* globalPeerLimit */
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TR_MSG_INF, /* message level */
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FALSE ); /* is message queueing enabled? */
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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_globalLock( struct tr_handle * handle )
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{
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tr_lockLock( handle->lock );
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}
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void
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tr_globalUnlock( struct tr_handle * handle )
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{
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tr_lockUnlock( handle->lock );
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}
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int
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tr_globalIsLocked( const struct tr_handle * handle )
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{
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return tr_lockHave( handle->lock );
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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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struct bind_port_data
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{
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tr_handle * handle;
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int port;
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};
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static void
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tr_setBindPortImpl( void * vdata )
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{
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struct bind_port_data * data = vdata;
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tr_handle * handle = data->handle;
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const int port = data->port;
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handle->isPortSet = 1;
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tr_sharedSetPort( handle->shared, port );
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tr_free( data );
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}
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void
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tr_setBindPort( tr_handle * handle, int port )
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{
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struct bind_port_data * data = tr_new( struct bind_port_data, 1 );
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data->handle = handle;
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data->port = port;
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tr_runInEventThread( handle, tr_setBindPortImpl, data );
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}
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int
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tr_getPublicPort( const tr_handle * h )
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{
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assert( h != NULL );
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return tr_sharedGetPublicPort( h->shared );
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}
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void tr_natTraversalEnable( tr_handle * h, int enable )
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{
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tr_globalLock( h );
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tr_sharedTraversalEnable( h->shared, enable );
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tr_globalUnlock( h );
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}
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const tr_handle_status *
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tr_handleStatus( tr_handle * h )
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{
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tr_handle_status * 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_globalLock( h );
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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_globalUnlock( h );
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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 * 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 * 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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}
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void
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tr_getGlobalSpeedLimit( tr_handle * 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
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tr_setGlobalPeerLimit( tr_handle * handle UNUSED,
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uint16_t maxGlobalPeers )
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{
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tr_fdSetPeerLimit( maxGlobalPeers );
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}
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uint16_t
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tr_getGlobalPeerLimit( const tr_handle * handle UNUSED )
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{
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return tr_fdGetPeerLimit( );
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}
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void
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tr_torrentRates( tr_handle * h, float * toClient, float * toPeer )
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{
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const tr_torrent * tor;
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tr_globalLock( h );
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*toClient = *toPeer = 0.0;
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for( tor = h->torrentList; tor; tor = tor->next )
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{
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float c, p;
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tr_torrentGetRates( tor, &c, &p );
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*toClient += c;
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*toPeer += p;
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}
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tr_globalUnlock( h );
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}
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int
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tr_torrentCount( const tr_handle * h )
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{
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return h->torrentCount;
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}
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static void
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tr_closeImpl( void * vh )
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{
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tr_handle * h = vh;
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tr_torrent * t;
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tr_sharedShuttingDown( h->shared );
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tr_trackerShuttingDown( h );
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for( t=h->torrentList; t!=NULL; ) {
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tr_torrent * tmp = t;
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t = t->next;
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tr_torrentClose( tmp );
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}
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tr_peerMgrFree( h->peerMgr );
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tr_rcClose( h->upload );
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tr_rcClose( h->download );
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h->isClosed = TRUE;
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}
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static int
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deadlineReached( const uint64_t deadline )
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{
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return tr_date( ) >= deadline;
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}
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#define SHUTDOWN_MAX_SECONDS 30
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void
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tr_close( tr_handle * h )
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{
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const int maxwait_msec = SHUTDOWN_MAX_SECONDS * 1000;
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const uint64_t deadline = tr_date( ) + maxwait_msec;
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tr_statsClose( h );
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tr_runInEventThread( h, tr_closeImpl, h );
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while( !h->isClosed && !deadlineReached( deadline ) )
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tr_wait( 100 );
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tr_eventClose( h );
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while( h->events && !deadlineReached( deadline ) )
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tr_wait( 100 );
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tr_fdClose( );
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tr_lockFree( h->lock );
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free( h->tag );
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free( h );
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}
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tr_torrent **
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tr_loadTorrents ( tr_handle * h,
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tr_ctor * ctor,
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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 * dirname = tr_getTorrentsDirectory( );
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tr_torrent ** torrents;
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tr_list *l=NULL, *list=NULL;
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tr_ctorSetSave( ctor, FALSE ); /* since we already have them */
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if( !stat( dirname, &sb )
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&& S_ISDIR( sb.st_mode )
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&& (( odir = opendir ( dirname ) )) )
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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 * tor;
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char filename[MAX_PATH_LENGTH];
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tr_buildPath( filename, sizeof(filename), dirname, d->d_name, NULL );
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tr_ctorSetMetainfoFromFile( ctor, filename );
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tor = tr_torrentNew( h, ctor, NULL );
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if( tor != NULL ) {
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tr_list_append( &list, tor );
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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*, n );
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for( i=0, l=list; l!=NULL; l=l->next )
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torrents[i++] = (tr_torrent*) l->data;
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assert( i==n );
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tr_list_free( &list, NULL );
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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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/***
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****
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***/
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void
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tr_setPexEnabled( tr_handle * handle, int isPexEnabled )
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{
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handle->isPexEnabled = isPexEnabled ? 1 : 0;
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}
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int
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tr_isPexEnabled( const tr_handle * handle )
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{
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return handle->isPexEnabled;
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}
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