Merge branch 'master' into saverio

[meshlink] / src / route.c

diff --git a/src/route.c b/src/route.c
index 4620665461d130a2a8fecc5f51f2a3cab8d362fb..f09a1041f1f8aca3561a49001fc74680180462af 100644 (file)
--- a/src/route.c
+++ b/src/route.c
@@ -1,7 +1,6 @@
 /*
     route.c -- routing
-    Copyright (C) 2000 Ivo Timmermans <itimmermans@bigfoot.com>,
-                  2000 Guus Sliepen <guus@sliepen.warande.net>
+    Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
 
     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
@@ -13,100 +12,79 @@
     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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-    $Id: route.c,v 1.1.2.3 2000/11/20 19:12:17 guus Exp $
+    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 "config.h"
-
-#include <utils.h>
-#include <xalloc.h>
+#include "system.h"
 
+#include "logger.h"
 #include "net.h"
-#include "connection.h"
-
-#include "system.h"
+#include "route.h"
+#include "utils.h"
+#include "libmeshlink.h"
+
+rmode_t routing_mode = RMODE_ROUTER;
+fmode_t forwarding_mode = FMODE_INTERNAL;
+bmode_t broadcast_mode = BMODE_MST;
+bool decrement_ttl = false;
+bool directonly = false;
+bool priorityinheritance = false;
+int macexpire = 600;
+mac_t mymac = {{0xFE, 0xFD, 0, 0, 0, 0}};
+bool pcap = false;
+
+static bool ratelimit(int frequency) {
+       static time_t lasttime = 0;
+       static int count = 0;
+
+       if(lasttime == now.tv_sec) {
+               if(count >= frequency)
+                       return true;
+       } else {
+               lasttime = now.tv_sec;
+               count = 0;
+       }
+
+       count++;
+       return false;
+}
 
-int routing_mode = 0;          /* Will be used to determine if we route by MAC or by payload's protocol */
+static bool checklength(node_t *source, vpn_packet_t *packet, length_t length) {
+       if(packet->len < length) {
+               logger(DEBUG_TRAFFIC, LOG_WARNING, "Got too short packet from %s (%s)", source->name, source->hostname);
+               return false;
+       } else
+               return true;
+}
 
-connection_t *route_packet(vpn_packet_t *packet)
-{
-  unsigned short type;
-cp
-  type = ntohs(*((unsigned short*)(&packet.data[12])))
+void route(node_t *source,vpn_packet_t *packet) {
+    // TODO: route on name or key
 
-  if(routing_mode)
-    {
-      return route_mac(packet);
+    node_t* owner = NULL;
+    tincpackethdr* hdr = (tincpackethdr*)packet->data;
+    owner = lookup_node(hdr->destination);
+    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");
+    return;
     }
 
-  switch(type)
-    {
-      case 0x0800:
-        return route_ipv4(packet);
-      case 0x86DD:
-        return route_ipv6(packet);
-/*
-      case 0x8137:
-        return route_ipx(packet);
-      case 0x0806:
-        return route_arp(packet);
-*/
-      default:
-        if(debug_lvl >= DEBUG_TRAFFIC)
-          {
-            syslog(LOG_WARNING, _("Cannot route packet: unknown type %hx"), type);
-          }
-        return NULL;
-     }
-}
-
-connection_t *route_mac(vpn_packet_t *packet)
-{
-  connection_t *cl;
-cp
-  cl = lookup_subnet_mac((mac_t *)(&packet.data[6]));
-  if(!cl)
-    if(debug_lvl >= DEBUG_TRAFFIC)
-      {
-        syslog(LOG_WARNING, _("Cannot route packet: unknown destination address %x:%x:%x:%x:%x:%x"),
-               packet.data[6],
-               packet.data[7],
-               packet.data[8],
-               packet.data[9],
-               packet.data[10],
-               packet.data[11]);
-      } 
-cp  
-  return cl;  
-}
+    if (owner == myself ) {
+    //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 + 46);
+    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;
+    }
 
-connection_t *route_ipv4(vpn_packet_t *packet)
-{
-  ipv4_t dest;
-  connection_t *cl;
-cp
-  dest = ntohl(*((unsigned long*)(&packet.data[30]);
-  
-  cl = lookup_subnet_ipv4(dest);
-  if(!cl)
-    if(debug_lvl >= DEBUG_TRAFFIC)
-      {
-        syslog(LOG_WARNING, _("Cannot route packet: unknown destination address %d.%d.%d.%d"),
-               packet.data[30], packet.data[31], packet.data[32], packet.data[33]);
-      } 
-cp
-  return cl;  
-}
+    //TODO: I skipped here a lot of checks !
 
-connection_t *route_ipv6(vpn_packet_t *packet)
-{
-cp
-  syslog(LOG_WARNING, _("Cannot route packet: IPv6 routing not implemented yet"));
-cp
-  return NULL;
+    send_packet(owner,packet);
+    return;
 }