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.
26 #include "libmeshlink.h"
28 fmode_t forwarding_mode = FMODE_INTERNAL;
29 bmode_t broadcast_mode = BMODE_MST;
30 bool decrement_ttl = false;
31 bool directonly = false;
32 bool priorityinheritance = false;
34 mac_t mymac = {{0xFE, 0xFD, 0, 0, 0, 0}};
37 static bool ratelimit(int frequency) {
38 static time_t lasttime = 0;
41 if(lasttime == now.tv_sec) {
42 if(count >= frequency)
45 lasttime = now.tv_sec;
53 static bool checklength(node_t *source, vpn_packet_t *packet, length_t length) {
54 if(packet->len < length) {
55 logger(DEBUG_TRAFFIC, LOG_WARNING, "Got too short packet from %s (%s)", source->name, source->hostname);
61 void route(node_t *source,vpn_packet_t *packet) {
62 // TODO: route on name or key
66 tincpackethdr* hdr = (tincpackethdr*)packet->data;
67 owner = lookup_node(hdr->destination);
68 logger(DEBUG_TRAFFIC, LOG_WARNING, "Routing packet from: %s . To: %s \n",hdr->source,hdr->destination);
71 if(!checklength(source, packet, (sizeof(tincpackethdr))))
76 logger(DEBUG_TRAFFIC, LOG_WARNING, "Cant lookup the owner of a packet in the route() function. This should never happen \n");
77 logger(DEBUG_TRAFFIC, LOG_WARNING, "Destination was: %s \n",hdr->destination);
81 if (owner == myself ) {
82 //TODO: implement sending received data from meshlink library to the application
83 logger(DEBUG_TRAFFIC, LOG_WARNING, "I received a packet for me with payload: %s \n", packet->data + 46);
84 (recv_callback)(packet->data + 46);
88 if(!owner->status.reachable) {
89 //TODO: check what to do here, not just print a warning
90 logger(DEBUG_TRAFFIC, LOG_WARNING, "The owner of a packet in the route() function is unreachable. Dropping packet. \n");
94 via = (owner->via == myself) ? owner->nexthop : owner->via;
96 logger(DEBUG_TRAFFIC, LOG_ERR, "Routing loop for packet from %s (%s)!", source->name, source->hostname);
100 if (directonly && owner!=via) {
101 logger(DEBUG_TRAFFIC, LOG_WARNING, "Direct Only is requested. Dropping packet because direct connection not available \n");
105 send_packet(owner,packet);