mirror of
https://github.com/servalproject/serval-dna.git
synced 2024-12-24 07:16:43 +00:00
c35af0617a
- make "debug.h" a private header so that the DEBUG() macro does not interfere with Xcode Debug builds, which set DEBUG=1 - move all #include "debug.h" from headers into .c files - move 'struct idebug' into a new public header "idebug.h" so that "log.h" can be public - move HTTPD port number defs from "httpd.h" to "constants.h", so that "httpd.h" can be private and "conf.h" can be public - add missing nested includes so each header compiles stand-alone without error - #include "sodium.h" instead of <sodium.h> - #include "sqlite3.h" instead of <sqlite3.h> - add header guard to "fifo.h" - fix header guard in "sync_keys.h"
83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
/*
|
|
Serval DNA MDP overlay network link tracking
|
|
Copyright (C) 2016 Flinders University
|
|
Copyright (C) 2012-2013 Serval Project Inc.
|
|
Copyright (C) 2010-2012 Paul Gardner-Stephen
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "serval.h"
|
|
#include "conf.h"
|
|
#include "route_link.h"
|
|
#include "overlay_interface.h"
|
|
#include "overlay_buffer.h"
|
|
#include "debug.h"
|
|
|
|
// append the address of a unicast link into a packet buffer
|
|
static void overlay_append_unicast_address(struct subscriber *subscriber, struct overlay_buffer *buff)
|
|
{
|
|
if ( subscriber->destination
|
|
&& subscriber->destination->unicast
|
|
&& subscriber->destination->address.addr.sa_family==AF_INET
|
|
) {
|
|
overlay_address_append(NULL, buff, subscriber);
|
|
ob_append_ui32(buff, subscriber->destination->address.inet.sin_addr.s_addr);
|
|
ob_append_ui16(buff, subscriber->destination->address.inet.sin_port);
|
|
DEBUGF(overlayrouting, "Added STUN info for %s", alloca_tohex_sid_t(subscriber->sid));
|
|
}else{
|
|
DEBUGF(overlayrouting, "Unable to give address of %s, %d", alloca_tohex_sid_t(subscriber->sid),subscriber->reachable);
|
|
}
|
|
}
|
|
|
|
DEFINE_BINDING(MDP_PORT_STUNREQ, overlay_mdp_service_stun_req);
|
|
static int overlay_mdp_service_stun_req(struct internal_mdp_header *header, struct overlay_buffer *payload)
|
|
{
|
|
DEBUGF(overlayrouting, "Processing STUN request from %s", alloca_tohex_sid_t(header->source->sid));
|
|
|
|
struct internal_mdp_header reply;
|
|
bzero(&reply, sizeof reply);
|
|
|
|
mdp_init_response(header, &reply);
|
|
reply.qos = OQ_MESH_MANAGEMENT;
|
|
|
|
struct overlay_buffer *replypayload = ob_new();
|
|
ob_limitsize(replypayload, MDP_MTU);
|
|
|
|
ob_checkpoint(replypayload);
|
|
while (ob_remaining(payload) > 0) {
|
|
struct subscriber *subscriber=NULL;
|
|
if (overlay_address_parse(NULL, payload, &subscriber))
|
|
break;
|
|
if (!subscriber){
|
|
DEBUGF(overlayrouting, "Unknown subscriber");
|
|
continue;
|
|
}
|
|
overlay_append_unicast_address(subscriber, replypayload);
|
|
if (ob_overrun(payload))
|
|
break;
|
|
ob_checkpoint(replypayload);
|
|
}
|
|
ob_rewind(replypayload);
|
|
|
|
if (ob_position(replypayload)){
|
|
DEBUGF(overlayrouting, "Sending reply");
|
|
ob_flip(replypayload);
|
|
overlay_send_frame(&reply, replypayload);
|
|
}
|
|
ob_free(replypayload);
|
|
return 0;
|
|
}
|