3 Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include "meshlink_internal.h"
27 #include "libmeshlink.h"
29 bool decrement_ttl = false;
31 static bool ratelimit(int frequency) {
32 static time_t lasttime = 0;
35 if(lasttime == now.tv_sec) {
36 if(count >= frequency)
39 lasttime = now.tv_sec;
47 static bool checklength(node_t *source, vpn_packet_t *packet, uint16_t length) {
48 if(packet->len < length) {
49 logger(DEBUG_TRAFFIC, LOG_WARNING, "Got too short packet from %s (%s)", source->name, source->hostname);
55 void route(node_t *source,vpn_packet_t *packet) {
56 // TODO: route on name or key
60 tincpackethdr* hdr = (tincpackethdr*)packet->data;
61 owner = lookup_node(hdr->destination);
62 logger(DEBUG_TRAFFIC, LOG_WARNING, "Routing packet from: %s . To: %s \n",hdr->source,hdr->destination);
65 if(!checklength(source, packet, (sizeof(tincpackethdr))))
70 logger(DEBUG_TRAFFIC, LOG_WARNING, "Cant lookup the owner of a packet in the route() function. This should never happen \n");
71 logger(DEBUG_TRAFFIC, LOG_WARNING, "Destination was: %s \n",hdr->destination);
75 if (owner == mesh->self ) {
76 //TODO: implement sending received data from meshlink library to the application
77 logger(DEBUG_TRAFFIC, LOG_WARNING, "I received a packet for me with payload: %s \n", packet->data + sizeof *hdr);
78 (meshlink_receive_cb_t)(packet->data + sizeof *hdr);
82 if(!owner->status.reachable) {
83 //TODO: check what to do here, not just print a warning
84 logger(DEBUG_TRAFFIC, LOG_WARNING, "The owner of a packet in the route() function is unreachable. Dropping packet. \n");
88 via = (owner->via == mesh->self) ? owner->nexthop : owner->via;
90 logger(DEBUG_TRAFFIC, LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname);
94 send_packet(owner,packet);