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transmission/libtransmission/transmission.c

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/******************************************************************************
* $Id$
*
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* Copyright (c) 2005-2007 Transmission authors and contributors
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*
* 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 "transmission.h"
#include "shared.h"
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/***********************************************************************
* tr_init
***********************************************************************
* Allocates a tr_handle_t structure and initializes a few things
**********************************************************************/
tr_handle_t * tr_init()
{
tr_handle_t * h;
int i, r;
tr_msgInit();
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tr_netResolveThreadInit();
h = calloc( sizeof( tr_handle_t ), 1 );
/* Generate a peer id : "-TRxxyy-" + 12 random alphanumeric
characters, where xx is the major version number and yy the
minor version number (Azureus-style) */
sprintf( h->id, "-TR%02d%02d-", VERSION_MAJOR, VERSION_MINOR );
for( i = 8; i < 20; i++ )
{
r = tr_rand( 36 );
h->id[i] = ( r < 26 ) ? ( 'a' + r ) : ( '0' + r - 26 ) ;
}
/* Random key */
for( i = 0; i < 20; i++ )
{
r = tr_rand( 36 );
h->key[i] = ( r < 26 ) ? ( 'a' + r ) : ( '0' + r - 26 ) ;
}
/* Don't exit when writing on a broken socket */
signal( SIGPIPE, SIG_IGN );
/* Initialize rate and file descripts controls */
h->uploadLimit = -1;
h->downloadLimit = -1;
h->fdlimit = tr_fdInit();
h->shared = tr_sharedInit( h );
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return h;
}
/***********************************************************************
* tr_setBindPort
***********************************************************************
*
**********************************************************************/
void tr_setBindPort( tr_handle_t * h, int port )
{
h->bindPort = port;
tr_sharedSetPort( h->shared, port );
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}
void tr_natTraversalEnable( tr_handle_t * h, int enable )
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{
tr_sharedTraversalEnable( h->shared, enable );
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}
int tr_natTraversalStatus( tr_handle_t * h )
{
return tr_sharedTraversalStatus( h->shared );
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}
void tr_setGlobalUploadLimit( tr_handle_t * h, int limit )
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{
h->uploadLimit = limit;
tr_sharedSetLimit( h->shared, limit );
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}
void tr_setGlobalDownloadLimit( tr_handle_t * h, int limit )
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{
h->downloadLimit = limit;
}
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void tr_torrentRates( tr_handle_t * h, float * dl, float * ul )
{
tr_torrent_t * tor;
*dl = 0.0;
*ul = 0.0;
for( tor = h->torrentList; tor; tor = tor->next )
{
tr_lockLock( &tor->lock );
if( tor->status & TR_STATUS_DOWNLOAD )
*dl += tr_rcRate( tor->download );
*ul += tr_rcRate( tor->upload );
tr_lockUnlock( &tor->lock );
}
}
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;
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for( tor = h->torrentList; tor; tor = next )
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{
next = tor->next;
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func( tor, d );
}
}
void tr_close( tr_handle_t * h )
{
tr_sharedClose( h->shared );
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tr_fdClose( h->fdlimit );
free( h );
tr_netResolveThreadClose();
}