X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fprotocol.c;h=e3e7e3908058ff47a3d2788f58cab1bf6935bfea;hp=97b51b4321b4196d6a50a62b7bcddc7d8ae642d1;hb=d1b597758eab68bb80d97855f25cb6dda55eeb0b;hpb=d2a54597e029f9d4f7bd29837be1be33909d78b1

diff --git a/src/protocol.c b/src/protocol.c
index 97b51b43..e3e7e390 100644
--- a/src/protocol.c
+++ b/src/protocol.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.c,v 1.28.4.84 2001/03/02 11:25:56 guus Exp $
+    $Id: protocol.c,v 1.28.4.88 2001/05/24 21:29:09 guus Exp $
 */
 
 #include "config.h"
@@ -119,7 +119,7 @@ int receive_request(connection_t *cl)
 cp  
   if(sscanf(cl->buffer, "%d", &request) == 1)
     {
-      if((request < 0) || (request > 255) || (request_handlers[request] == NULL))
+      if((request < 0) || (request >= LAST) || (request_handlers[request] == NULL))
         {
           syslog(LOG_ERR, _("Unknown request from %s (%s)"),
 		 cl->name, cl->hostname);
@@ -325,6 +325,7 @@ cp
       subnet = (subnet_t *)node->data;
       send_add_subnet(cl, subnet);
     }
+
   /* And send him all the hosts and their subnets we know... */
   
   for(node = connection_tree->head; node; node = node->next)
@@ -644,7 +645,7 @@ int send_add_subnet(connection_t *cl, subnet_t *subnet)
   char *netstr;
   char *owner;
 cp
-  if(cl->options & OPTION_INDIRECT)
+  if((cl->options | myself->options | subnet->owner->options) & OPTION_INDIRECT)
     owner = myself->name;
   else
     owner = subnet->owner->name;
@@ -810,7 +811,7 @@ cp
 int send_add_host(connection_t *cl, connection_t *other)
 {
 cp
-  if(!(cl->options & OPTION_INDIRECT))
+  if(!((cl->options | myself->options | other->options) & OPTION_INDIRECT))
     return send_request(cl, "%d %s %lx:%d %lx", ADD_HOST,
                       other->name, other->address, other->port, other->options);
   else
@@ -904,7 +905,7 @@ cp
 int send_del_host(connection_t *cl, connection_t *other)
 {
 cp
-  if(!(cl->options & OPTION_INDIRECT))
+  if(!((cl->options | myself->options) & OPTION_INDIRECT))
     return send_request(cl, "%d %s %lx:%d %lx", DEL_HOST,
                       other->name, other->address, other->port, other->options);
   else
@@ -914,7 +915,7 @@ cp
 int del_host_h(connection_t *cl)
 {
   char name[MAX_STRING_SIZE];
-  ip_t address;
+  ipv4_t address;
   port_t port;
   long int options;
   connection_t *old, *p;
@@ -1059,11 +1060,14 @@ cp
 
 int send_ping(connection_t *cl)
 {
+  char salt[SALTLEN*2+1];
 cp
   cl->status.pinged = 1;
   cl->last_ping_time = time(NULL);
+  RAND_bytes(salt, SALTLEN);
+  bin2hex(salt, salt, SALTLEN);
 cp
-  return send_request(cl, "%d", PING);
+  return send_request(cl, "%d %s", PING, salt);
 }
 
 int ping_h(connection_t *cl)
@@ -1074,8 +1078,12 @@ cp
 
 int send_pong(connection_t *cl)
 {
+  char salt[SALTLEN*2+1];
+cp
+  RAND_bytes(salt, SALTLEN);
+  bin2hex(salt, salt, SALTLEN);
 cp
-  return send_request(cl, "%d", PONG);
+  return send_request(cl, "%d %s", PONG, salt);
 }
 
 int pong_h(connection_t *cl)
@@ -1126,7 +1134,8 @@ cp
   from->status.validkey = 0;
   from->status.waitingforkey = 0;
 
-  send_key_changed(from, cl);
+  if(!(from->options | cl->options | myself->options) & OPTION_INDIRECT)
+    send_key_changed(from, cl);
 cp
   return 0;
 }
@@ -1264,7 +1273,7 @@ cp
 int send_tcppacket(connection_t *cl, vpn_packet_t *packet)
 {
   int x;
-  
+cp  
   x = send_request(cl->nexthop, "%d %hd", PACKET, packet->len);
 
   if(x)
@@ -1278,8 +1287,8 @@ int tcppacket_h(connection_t *cl)
   vpn_packet_t packet;
   char *p;
   int todo, x;
-  
-  if(sscanf(cl->buffer, "%*d %hd", packet.len) != 1)
+cp  
+  if(sscanf(cl->buffer, "%*d %hd", &packet.len) != 1)
     {
       syslog(LOG_ERR, _("Got bad PACKET from %s (%s)"), cl->name, cl->hostname);
       return -1;
@@ -1289,7 +1298,7 @@ int tcppacket_h(connection_t *cl)
 
   p = packet.data;
   todo = packet.len;
-  
+
   while(todo)
     {
       x = read(cl->meta_socket, p, todo);
@@ -1299,7 +1308,7 @@ int tcppacket_h(connection_t *cl)
           if(x==0)
             syslog(LOG_NOTICE, _("Connection closed by %s (%s)"), cl->name, cl->hostname);
           else
-            if(errno==EINTR)
+            if(errno==EINTR || errno==EAGAIN)	/* FIXME: select() or poll() or reimplement this evil hack */
               continue;
             else
               syslog(LOG_ERR, _("Error during reception of PACKET from %s (%s): %m"), cl->name, cl->hostname);
@@ -1311,7 +1320,9 @@ int tcppacket_h(connection_t *cl)
       p += x;
     }
 
-  return receive_packet(cl, &packet);
+  receive_packet(cl, &packet);
+cp
+  return 0;
 }
 
 /* Jumptable for the request handlers */