X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet.c;h=ea66f1304a8d1e3dd675f85953ac56e12c130dba;hp=8b340c2b254ca9bf77d0b910da8cea5bdd00ad31;hb=1c007c0627ad5e71b8218fcb086240970e955c87;hpb=468f1d2efcce53937b7f5e0540269ae18f29ebac

diff --git a/src/net.c b/src/net.c
index 8b340c2b..ea66f130 100644
--- a/src/net.c
+++ b/src/net.c
@@ -109,27 +109,6 @@ cp
   return 0;
 }
 
-/*
-  write as many bytes as possible to the tap
-  device, possibly in multiple turns.
-*/
-int write_n(int fd, void *buf, size_t len)
-{
-  int r, done = 0;
-cp  
-  do
-    {
-      if((r = write(fd, buf, len)) < 0)
-	return -1;
-      len -= r;
-      buf += r;
-      done += r;
-    } while(len > 0);
-
-  return done;
-cp
-}
-
 int xrecv(conn_list_t *cl, void *packet)
 {
   vpn_packet_t vp;
@@ -138,7 +117,7 @@ cp
   do_decrypt((real_packet_t*)packet, &vp, cl->key);
   add_mac_addresses(&vp);
 
-  if((lenin = write_n(tap_fd, &vp, vp.len + 2)) < 0)
+  if((lenin = write(tap_fd, &vp, vp.len + sizeof(vp.len))) < 0)
     syslog(LOG_ERR, "Can't write to tap device: %m");
   else
     total_tap_out += lenin;
@@ -157,13 +136,13 @@ cp
   if(debug_lvl > 3)
     syslog(LOG_DEBUG, "packet to queue: %d", s);
 
-  e = xmalloc(sizeof(queue_element_t));
+  e = xmalloc(sizeof(*e));
   e->packet = xmalloc(s);
   memcpy(e->packet, packet, s);
 
   if(!*q)
     {
-      *q = xmalloc(sizeof(packet_queue_t));
+      *q = xmalloc(sizeof(**q));
       (*q)->head = (*q)->tail = NULL;
     }
 
@@ -794,7 +773,7 @@ cp
   if(rp.len >= 0)
     {
       f = lookup_conn(rp.from);
-      if(debug_lvl > 2)
+      if(debug_lvl > 3)
 	syslog(LOG_DEBUG, "packet from " IP_ADDR_S " (len %d)",
 	       IP_ADDR_V(rp.from), rp.len);
       if(!f)
@@ -914,7 +893,7 @@ int handle_new_meta_connection(conn_list_t *cl)
 {
   conn_list_t *ncn;
   struct sockaddr client;
-  int nfd, len = sizeof(struct sockaddr);
+  int nfd, len = sizeof(client);
 cp
   if((nfd = accept(cl->meta_socket, &client, &len)) < 0)
     {
@@ -942,9 +921,10 @@ cp
 */
 int handle_incoming_meta_data(conn_list_t *cl)
 {
-  int x, l = sizeof(x), lenin;
+  int x, l = sizeof(x);
   unsigned char tmp[1600];
   int request;
+  int lenin = 0;
 cp
   if(getsockopt(cl->meta_socket, SOL_SOCKET, SO_ERROR, &x, &l) < 0)
     {
@@ -957,7 +937,7 @@ cp
       return -1;
     }
 
-  if((lenin = recv(cl->meta_socket, &tmp, sizeof(tmp), 0)) <= 0)
+  if(read(cl->meta_socket, &tmp, 1) <= 0)
     {
       syslog(LOG_ERR, "Receive failed: %m");
       return -1;
@@ -968,6 +948,35 @@ cp
   if(debug_lvl > 3)
     syslog(LOG_DEBUG, "got request %d", request);
 
+  /* This is a hack.  After an ACK request, multiple ADD_HOSTs can
+     follow.  So if the request is one of these, only read as much
+     bytes as necessary.  (Luckily the ADD_HOST request is of fixed
+     length) :P -- ivo */
+     
+  if(request != ACK)
+    {
+      if(request == ADD_HOST)
+	{
+	  if((lenin = read(cl->meta_socket, &tmp[1], sizeof(add_host_t) - 1)) <= 0)
+	    {
+	      syslog(LOG_ERR, "Receive failed for ADD_HOST: %m");
+	      return -1;
+	    }
+	}
+      else
+	{
+	  if((lenin = read(cl->meta_socket, &tmp[1], sizeof(tmp) - 1)) <= 0)
+	    {
+	      if(errno != EAGAIN) /* talk about hacks... */
+		{
+		  syslog(LOG_ERR, "Receive failed: %m");
+		  return -1;
+		}
+	    }
+	}
+    }
+  
+  lenin++;
   if(request_handlers[request] == NULL)
     syslog(LOG_ERR, "Unknown request %d.", request);
   else
@@ -1061,10 +1070,10 @@ cp
   from = ntohl(*((unsigned long*)(&vp.data[26])));
   to = ntohl(*((unsigned long*)(&vp.data[30])));
 
-  if(debug_lvl > 2)
+  if(debug_lvl > 3)
     syslog(LOG_DEBUG, "An IP packet (%04x) for " IP_ADDR_S " from " IP_ADDR_S,
 	   ether_type, IP_ADDR_V(to), IP_ADDR_V(from));
-  if(debug_lvl > 3)
+  if(debug_lvl > 4)
     syslog(LOG_DEBUG, MAC_ADDR_S " to " MAC_ADDR_S,
 	   MAC_ADDR_V(vp.data[0]), MAC_ADDR_V(vp.data[6]));
   
@@ -1077,7 +1086,7 @@ cp
 }
 
 /*
-  this is where it al happens...
+  this is where it all happens...
 */
 void main_loop(void)
 {