mirror of
https://github.com/transmission/transmission
synced 2024-12-24 08:43:27 +00:00
147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
/*
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* This file Copyright (C) 2007 Charles Kerr <charles@rebelbase.com>
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*
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* This file is licensed by the GPL version 2. Works owned by the
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* Transmission project are granted a special exemption to clause 2(b)
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* so that the bulk of its code can remain under the MIT license.
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* This exemption does not extend to derived works not owned by
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* the Transmission project.
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*
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* $Id$
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*/
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#include <stdio.h> /* printf */
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#include <miniupnp/miniwget.h>
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#include <miniupnp/miniupnpc.h>
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#include <miniupnp/upnpcommands.h>
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#include "transmission.h"
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#include "internal.h"
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#include "utils.h"
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#include "upnp.h"
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struct tr_upnp
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{
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struct UPNPUrls urls;
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struct IGDdatas data;
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int port;
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char lanaddr[16];
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unsigned int isForwarding : 1;
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unsigned int isEnabled : 1;
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unsigned int hasDiscovered : 1;
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};
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/**
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***
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**/
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tr_upnp*
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tr_upnpInit( void )
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{
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tr_upnp * ret = tr_new0( tr_upnp, 1 );
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ret->port = -1;
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return ret;
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}
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void
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tr_upnpClose( tr_upnp * handle )
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{
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tr_upnpStop( handle );
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if( handle->hasDiscovered )
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FreeUPNPUrls( &handle->urls );
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tr_free( handle );
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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_upnpStart( tr_upnp * handle )
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{
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if( !handle->hasDiscovered )
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{
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struct UPNPDev * devlist = upnpDiscover( 2000, NULL );
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if( UPNP_GetValidIGD( devlist, &handle->urls, &handle->data, handle->lanaddr, sizeof(handle->lanaddr))) {
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tr_dbg( "UPNP: Found Internet Gateway Device '%s'", handle->urls.controlURL );
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tr_dbg( "UPNP: Local LAN IP Address is '%s'", handle->lanaddr );
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}
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freeUPNPDevlist( devlist );
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handle->hasDiscovered = 1;
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}
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handle->isEnabled = 1;
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if( handle->port >= 0 )
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{
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char portStr[16];
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snprintf( portStr, sizeof(portStr), "%d", handle->port );
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handle->isForwarding = ( handle->urls.controlURL != NULL ) &&
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( handle->data.servicetype != NULL ) &&
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( UPNP_AddPortMapping( handle->urls.controlURL,
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handle->data.servicetype,
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portStr, portStr, handle->lanaddr,
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"Transmission", "TCP" ) );
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tr_inf( "UPNP: Port Forwarding via '%s', service '%s'. (local address: %s:%d)",
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handle->urls.controlURL, handle->data.servicetype, handle->lanaddr, handle->port );
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tr_inf( "UPNP: Port Forwarding Enabled? %s", (handle->isForwarding?"Yes":"No") );
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}
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}
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void
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tr_upnpRemoveForwarding ( tr_upnp * handle )
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{
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handle->port = -1;
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if( handle->isForwarding )
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{
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char portStr[16];
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snprintf( portStr, sizeof(portStr), "%d", handle->port );
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UPNP_DeletePortMapping( handle->urls.controlURL,
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handle->data.servicetype,
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portStr, "TCP" );
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tr_dbg( "Stopping port forwarding of '%s', service '%s'",
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handle->urls.controlURL, handle->data.servicetype );
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handle->isForwarding = FALSE;
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}
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}
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void
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tr_upnpForwardPort( tr_upnp * handle, int publicPort )
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{
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tr_upnpRemoveForwarding( handle ); /* remove the old forwarding */
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handle->port = publicPort;
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if( handle->isEnabled )
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tr_upnpStart( handle );
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}
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void
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tr_upnpStop( tr_upnp * handle )
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{
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tr_upnpRemoveForwarding( handle );
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handle->isEnabled = 0;
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}
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int
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tr_upnpStatus( tr_upnp * handle )
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{
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if( !handle->isEnabled )
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return TR_NAT_TRAVERSAL_DISABLED;
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if( !handle->isForwarding )
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return TR_NAT_TRAVERSAL_ERROR;
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return TR_NAT_TRAVERSAL_MAPPED;
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}
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void
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tr_upnpPulse( tr_upnp * handle UNUSED )
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{
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/* no-op */
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}
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