static bool checklength(node_t *source, vpn_packet_t *packet, uint16_t length) {
if(packet->len < length) {
- logger(DEBUG_TRAFFIC, LOG_WARNING, "Got too short packet from %s (%s)", source->name, source->hostname);
+ logger(DEBUG_TRAFFIC, LOG_WARNING,
+ "Got too short packet from %s (%s)", source->name,
+ source->hostname);
return false;
} else
return true;
}
void route(meshlink_handle_t *mesh, node_t *source, vpn_packet_t *packet) {
- // TODO: route on name or key
+ // TODO: route on name or key
- node_t* owner = NULL;
- node_t* via = NULL;
- meshlink_packethdr_t* hdr = (meshlink_packethdr_t*)packet->data;
- owner = lookup_node(mesh, hdr->destination);
- logger(DEBUG_TRAFFIC, LOG_WARNING, "Routing packet from: %s . To: %s \n",hdr->source,hdr->destination);
+ node_t *owner = NULL;
+ node_t *via = NULL;
+ meshlink_packethdr_t *hdr = (meshlink_packethdr_t *) packet->data;
+ owner = lookup_node(mesh, hdr->destination);
+ logger(DEBUG_TRAFFIC, LOG_WARNING,
+ "Routing packet from: %s . To: %s \n", hdr->source,
+ hdr->destination);
- //Check Lenght
- if(!checklength(source, packet, (sizeof(meshlink_packethdr_t))))
- return;
+ //Check Lenght
+ if(!checklength(source, packet, (sizeof(meshlink_packethdr_t))))
+ return;
- if (owner == NULL) {
- //Lookup failed
- logger(DEBUG_TRAFFIC, LOG_WARNING, "Cant lookup the owner of a packet in the route() function. This should never happen \n");
- logger(DEBUG_TRAFFIC, LOG_WARNING, "Destination was: %s \n",hdr->destination);
- return;
- }
+ if(owner == NULL) {
+ //Lookup failed
+ logger(DEBUG_TRAFFIC, LOG_WARNING, "Cant lookup the owner of a packet in the route() function. This should never happen!\n");
+ logger(DEBUG_TRAFFIC, LOG_WARNING, "Destination was: %s\n", hdr->destination);
+ return;
+ }
- if (owner == mesh->self ) {
- //TODO: implement sending received data from meshlink library to the application
- logger(DEBUG_TRAFFIC, LOG_WARNING, "I received a packet for me with payload: %s \n", packet->data + sizeof *hdr);
- (meshlink_receive_cb_t)(packet->data + sizeof *hdr);
- return;
- }
+ if(owner == mesh->self) {
+ logger(DEBUG_TRAFFIC, LOG_WARNING, "I received a packet for me with payload: %s \n", packet->data + sizeof *hdr);
+ if(mesh->receive_cb)
+ mesh->receive_cb(mesh, (meshlink_node_t *)source, packet->data + sizeof *hdr, packet->len - sizeof *hdr);
+ return;
+ }
- if(!owner->status.reachable) {
- //TODO: check what to do here, not just print a warning
- logger(DEBUG_TRAFFIC, LOG_WARNING, "The owner of a packet in the route() function is unreachable. Dropping packet. \n");
- return;
- }
+ if(!owner->status.reachable) {
+ //TODO: check what to do here, not just print a warning
+ logger(DEBUG_TRAFFIC, LOG_WARNING, "The owner of a packet in the route() function is unreachable. Dropping packet.\n");
+ return;
+ }
- via = (owner->via == mesh->self) ? owner->nexthop : owner->via;
- if(via == source) {
- logger(DEBUG_TRAFFIC, LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname);
- return;
- }
+ via = (owner->via == mesh->self) ? owner->nexthop : owner->via;
+ if(via == source) {
+ logger(DEBUG_TRAFFIC, LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname);
+ return;
+ }
- send_packet(mesh, owner, packet);
- return;
+ send_packet(mesh, owner, packet);
+ return;
}