mirror of
https://github.com/servalproject/serval-dna.git
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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
/*
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Serval DNA MDP overlay network link tracking
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Copyright (C) 2016 Flinders University
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Copyright (C) 2012-2013 Serval Project Inc.
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Copyright (C) 2010-2012 Paul Gardner-Stephen
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "serval.h"
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#include "conf.h"
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#include "route_link.h"
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#include "overlay_interface.h"
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#include "overlay_buffer.h"
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#include "debug.h"
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// append the address of a unicast link into a packet buffer
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static void overlay_append_unicast_address(struct subscriber *subscriber, struct overlay_buffer *buff)
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{
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if ( subscriber->destination
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&& subscriber->destination->unicast
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&& subscriber->destination->address.addr.sa_family==AF_INET
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) {
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overlay_address_append(NULL, buff, subscriber);
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ob_append_ui32(buff, subscriber->destination->address.inet.sin_addr.s_addr);
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ob_append_ui16(buff, subscriber->destination->address.inet.sin_port);
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DEBUGF(overlayrouting, "Added STUN info for %s", alloca_tohex_sid_t(subscriber->sid));
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}else{
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DEBUGF(overlayrouting, "Unable to give address of %s, %d", alloca_tohex_sid_t(subscriber->sid),subscriber->reachable);
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}
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}
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DEFINE_BINDING(MDP_PORT_STUNREQ, overlay_mdp_service_stun_req);
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static int overlay_mdp_service_stun_req(struct internal_mdp_header *header, struct overlay_buffer *payload)
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{
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DEBUGF(overlayrouting, "Processing STUN request from %s", alloca_tohex_sid_t(header->source->sid));
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struct internal_mdp_header reply;
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bzero(&reply, sizeof reply);
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mdp_init_response(header, &reply);
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reply.qos = OQ_MESH_MANAGEMENT;
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struct overlay_buffer *replypayload = ob_new();
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ob_limitsize(replypayload, MDP_MTU);
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ob_checkpoint(replypayload);
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while (ob_remaining(payload) > 0) {
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struct subscriber *subscriber=NULL;
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if (overlay_address_parse(NULL, payload, &subscriber))
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break;
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if (!subscriber){
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DEBUGF(overlayrouting, "Unknown subscriber");
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continue;
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}
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overlay_append_unicast_address(subscriber, replypayload);
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if (ob_overrun(payload))
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break;
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ob_checkpoint(replypayload);
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}
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ob_rewind(replypayload);
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if (ob_position(replypayload)){
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DEBUGF(overlayrouting, "Sending reply");
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ob_flip(replypayload);
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overlay_send_frame(&reply, replypayload);
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}
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ob_free(replypayload);
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return 0;
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}
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