- Global time_t now, so that we don't have to call time() too often.

- MAC addresses expire after a time configurable by MACExpire (default 600
  seconds)

diff --git a/src/event.c b/src/event.c
index d11f91c..028483b 100644 (file)
--- a/src/event.c
+++ b/src/event.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: event.c,v 1.1.4.1 2002/02/11 10:05:58 guus Exp $
+    $Id: event.c,v 1.1.4.2 2002/03/01 14:09:30 guus Exp $
 */
 
 #include "config.h"
@@ -34,6 +34,7 @@
 #include "system.h"
 
 avl_tree_t *event_tree;
+extern time_t now;
 
 int id;
 
@@ -98,7 +99,7 @@ cp
   if(event_tree->head)
   {
     event = (event_t *)event_tree->head->data;
-    if(event->time < time(NULL))
+    if(event->time < now)
     {
       avl_delete(event_tree, event);
       return event;

diff --git a/src/meta.c b/src/meta.c
index f2326d1..b51c64d 100644 (file)
--- a/src/meta.c
+++ b/src/meta.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: meta.c,v 1.1.2.24 2002/02/18 16:25:16 guus Exp $
+    $Id: meta.c,v 1.1.2.25 2002/03/01 14:09:31 guus Exp $
 */
 
 #include "config.h"
@@ -204,7 +204,7 @@ cp
       return -1;
     }
 
-  c->last_ping_time = time(NULL);
+  c->last_ping_time = now;
 cp  
   return 0;
 }

diff --git a/src/net.c b/src/net.c
index 5632727..a1b1705 100644 (file)
--- a/src/net.c
+++ b/src/net.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net.c,v 1.35.4.159 2002/03/01 13:18:54 guus Exp $
+    $Id: net.c,v 1.35.4.160 2002/03/01 14:09:31 guus Exp $
 */
 
 #include "config.h"
@@ -73,6 +73,8 @@ int do_purge = 0;
 int sighup = 0;
 int sigalrm = 0;
 
+time_t now = 0;
+
 /*
   put all file descriptors in an fd_set array
 */
@@ -229,12 +231,9 @@ cp
 */
 void check_dead_connections(void)
 {
-  time_t now;
   avl_node_t *node, *next;
   connection_t *c;
 cp
-  now = time(NULL);
-
   for(node = connection_tree->head; node; node = next)
     {
       next = node->next;
@@ -359,12 +358,14 @@ void main_loop(void)
   int t;
   event_t *event;
 cp
-  last_ping_check = time(NULL);
+  last_ping_check = now;
 
-  srand(time(NULL));
+  srand(now);
 
   for(;;)
     {
+      now = time(NULL);
+
       tv.tv_sec = 1 + (rand() & 7); /* Approx. 5 seconds, randomized to prevent global synchronisation effects */
       tv.tv_usec = 0;
 
@@ -394,25 +395,26 @@ cp
           do_purge = 0;
         }
 
-      t = time(NULL);
-
       /* Let's check if everybody is still alive */
 
-      if(last_ping_check + pingtimeout < t)
+      if(last_ping_check + pingtimeout < now)
         {
           check_dead_connections();
-          last_ping_check = time(NULL);
+          last_ping_check = now;
+
+          if(routing_mode != RMODE_ROUTER)
+           age_mac();
 
           /* Should we regenerate our key? */
 
-          if(keyexpires < t)
+          if(keyexpires < now)
             {
               if(debug_lvl >= DEBUG_STATUS)
                 syslog(LOG_INFO, _("Regenerating symmetric key"));
 
               RAND_pseudo_bytes(myself->key, myself->keylength);
               send_key_changed(myself->connection, myself);
-              keyexpires = time(NULL) + keylifetime;
+              keyexpires = now + keylifetime;
             }
         }
 

diff --git a/src/net.h b/src/net.h
index 6a98118..07e589a 100644 (file)
--- a/src/net.h
+++ b/src/net.h
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net.h,v 1.9.4.45 2002/03/01 13:18:54 guus Exp $
+    $Id: net.h,v 1.9.4.46 2002/03/01 14:09:31 guus Exp $
 */
 
 #ifndef __TINC_NET_H__
@@ -115,6 +115,7 @@ extern int keylifetime;
 extern int do_prune;
 extern int do_purge;
 extern char *myport;
+extern time_t now;
 
 extern void retry_outgoing(outgoing_t *);
 extern void handle_incoming_vpn_data(int);

diff --git a/src/net_packet.c b/src/net_packet.c
index 81d759a..bffe4a7 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net_packet.c,v 1.1.2.6 2002/03/01 12:26:56 guus Exp $
+    $Id: net_packet.c,v 1.1.2.7 2002/03/01 14:09:31 guus Exp $
 */
 
 #include "config.h"
@@ -399,10 +399,9 @@ cp
       return;
     }
 
-/*
   if(n->connection)
-    n->connection->last_ping_time = time(NULL);
-*/
+    n->connection->last_ping_time = now;
+
   receive_udppacket(n, &pkt);
 cp
 }

diff --git a/src/net_setup.c b/src/net_setup.c
index 6887fe3..f8a8b99 100644 (file)
--- a/src/net_setup.c
+++ b/src/net_setup.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net_setup.c,v 1.1.2.7 2002/03/01 13:18:54 guus Exp $
+    $Id: net_setup.c,v 1.1.2.8 2002/03/01 14:09:31 guus Exp $
 */
 
 #include "config.h"
@@ -328,6 +328,9 @@ cp
 
   get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
 
+  if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
+    macexpire= 600;
+
   if(get_config_int(lookup_config(myself->connection->config_tree, "MaxTimeout"), &maxtimeout))
     {
       if(maxtimeout <= 0)
@@ -392,7 +395,7 @@ cp
   if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
     keylifetime = 3600;
 
-  keyexpires = time(NULL) + keylifetime;
+  keyexpires = now + keylifetime;
 
   /* Check if we want to use message authentication codes... */
 
@@ -514,6 +517,8 @@ cp
 int setup_network_connections(void)
 {
 cp
+  now = time(NULL);
+
   init_connections();
   init_subnets();
   init_nodes();

diff --git a/src/net_socket.c b/src/net_socket.c
index 39bbbaa..63760af 100644 (file)
--- a/src/net_socket.c
+++ b/src/net_socket.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: net_socket.c,v 1.1.2.6 2002/03/01 13:18:54 guus Exp $
+    $Id: net_socket.c,v 1.1.2.7 2002/03/01 14:09:31 guus Exp $
 */
 
 #include "config.h"
@@ -204,7 +204,7 @@ cp
 
   event = new_event();
   event->handler = (event_handler_t)setup_outgoing_connection;
-  event->time = time(NULL) + outgoing->timeout;
+  event->time = now + outgoing->timeout;
   event->data = outgoing;
   event_add(event);
 
@@ -260,7 +260,7 @@ cp
   if(debug_lvl >= DEBUG_CONNECTIONS)
     syslog(LOG_INFO, _("Connected to %s (%s)"), c->name, c->hostname);
 
-  c->last_ping_time = time(NULL);
+  c->last_ping_time = now;
 
   send_id(c);
 cp
@@ -407,7 +407,7 @@ cp
     }
   
   c->outgoing = outgoing;
-  c->last_ping_time = time(NULL);
+  c->last_ping_time = now;
 
   connection_add(c);
 
@@ -439,7 +439,7 @@ cp
   c->address = sa;
   c->hostname = sockaddr2hostname(&sa);
   c->socket = fd;
-  c->last_ping_time = time(NULL);
+  c->last_ping_time = now;
 
   if(debug_lvl >= DEBUG_CONNECTIONS)
     syslog(LOG_NOTICE, _("Connection from %s"), c->hostname);

diff --git a/src/protocol_misc.c b/src/protocol_misc.c
index 5863f9e..0e4a86d 100644 (file)
--- a/src/protocol_misc.c
+++ b/src/protocol_misc.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol_misc.c,v 1.1.4.1 2002/02/11 10:05:58 guus Exp $
+    $Id: protocol_misc.c,v 1.1.4.2 2002/03/01 14:09:31 guus Exp $
 */
 
 #include "config.h"
@@ -122,7 +122,7 @@ int send_ping(connection_t *c)
 {
 cp
   c->status.pinged = 1;
-  c->last_ping_time = time(NULL);
+  c->last_ping_time = now;
 cp
   return send_request(c, "%d", PING);
 }

diff --git a/src/route.c b/src/route.c
index a6790c9..d76bd9b 100644 (file)
--- a/src/route.c
+++ b/src/route.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: route.c,v 1.1.2.25 2002/03/01 12:26:56 guus Exp $
+    $Id: route.c,v 1.1.2.26 2002/03/01 14:09:31 guus Exp $
 */
 
 #include "config.h"
@@ -52,6 +52,7 @@
 
 int routing_mode = RMODE_ROUTER;
 int priorityinheritance = 0;
+int macexpire = 600;
 subnet_t mymac;
 
 void learn_mac(mac_t *address)
@@ -84,6 +85,31 @@ cp
             send_add_subnet(c, subnet);
         }
     }
+
+  subnet->net.mac.lastseen = now;
+}
+
+void age_mac(void)
+{
+  subnet_t *s;
+  connection_t *c;
+  avl_node_t *node, *next, *node2;
+cp
+  for(node = myself->subnet_tree->head; node; node = next)
+    {
+      s = (subnet_t *)node->data;
+      if(s->type == SUBNET_MAC && s->net.mac.lastseen && s->net.mac.lastseen + macexpire < now)
+        {
+         for(node2 = connection_tree->head; node2; node2 = node2->next)
+            {
+              c = (connection_t *)node2->data;
+              if(c->status.active)
+               send_del_subnet(c, s);
+            }
+          subnet_del(myself, s);
+       }
+    }
+cp
 }
 
 node_t *route_mac(vpn_packet_t *packet)

diff --git a/src/route.h b/src/route.h
index 1f9e7a5..d188af2 100644 (file)
--- a/src/route.h
+++ b/src/route.h
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: route.h,v 1.1.2.6 2002/03/01 12:26:56 guus Exp $
+    $Id: route.h,v 1.1.2.7 2002/03/01 14:09:31 guus Exp $
 */
 
 #ifndef __TINC_ROUTE_H__
@@ -32,7 +32,9 @@ enum
 
 extern int routing_mode;
 extern int priorityinheritance;
+extern int macexpire;
 
+extern void age_mac(void);
 extern void route_incoming(node_t *, vpn_packet_t *);
 extern void route_outgoing(vpn_packet_t *);
 

diff --git a/src/subnet.h b/src/subnet.h
index 04e5c28..7e926e4 100644 (file)
--- a/src/subnet.h
+++ b/src/subnet.h
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: subnet.h,v 1.1.2.16 2002/02/18 16:25:19 guus Exp $
+    $Id: subnet.h,v 1.1.2.17 2002/03/01 14:09:31 guus Exp $
 */
 
 #ifndef __TINC_SUBNET_H__
@@ -36,6 +36,7 @@ enum
 typedef struct subnet_mac_t
 {
   mac_t address;
+  time_t lastseen;
 } subnet_mac_t;
 
 typedef struct subnet_ipv4_t