X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet.c;h=7b9133e0c02d005761300fa24a4bcf03fa8ae1b6;hp=246d62ca44ce31e30a5d417c20f0c7bd27649583;hb=8caa1b9d750bb7467d1c3330780b05ac2bbf9883;hpb=ca73b722cbad5a08ec9bb5026ed5129da9a24bd8

diff --git a/src/net.c b/src/net.c
index 246d62ca..7b9133e0 100644
--- a/src/net.c
+++ b/src/net.c
@@ -93,12 +93,14 @@ int xsend(conn_list_t *cl, void *packet)
   real_packet_t rp;
 cp
   do_encrypt((vpn_packet_t*)packet, &rp, cl->key);
-  rp.from = myself->vpn_ip;
+  rp.from = htonl(myself->vpn_ip);
+  rp.data.len = htons(rp.data.len);
+  rp.len = htons(rp.len);
 
   if(debug_lvl > 3)
-    syslog(LOG_ERR, "Sent %d bytes to %lx", rp.len, cl->vpn_ip);
+    syslog(LOG_ERR, "Sent %d bytes to %lx", ntohs(rp.len), cl->vpn_ip);
 
-  if((r = send(cl->socket, (char*)&rp, rp.len, 0)) < 0)
+  if((r = send(cl->socket, (char*)&rp, ntohs(rp.len), 0)) < 0)
     {
       syslog(LOG_ERR, "Error sending data: %m");
       return -1;
@@ -704,7 +706,8 @@ cp
   p->real_ip = ntohl(ci.sin_addr.s_addr);
   p->meta_socket = sfd;
   p->status.meta = 1;
-
+  p->buflen = 0;
+  
   syslog(LOG_NOTICE, "Connection from %s:%d", p->hostname, htons(ci.sin_port));
 
   if(send_basic_info(p) < 0)
@@ -770,6 +773,11 @@ cp
       return -1;
     }
   total_socket_in += lenin;
+
+  rp.data.len = ntohs(rp.data.len);
+  rp.len = ntohs(rp.len);
+  rp.from = ntohl(rp.from);
+
   if(rp.len >= 0)
     {
       f = lookup_conn(rp.from);
@@ -922,8 +930,7 @@ cp
 int handle_incoming_meta_data(conn_list_t *cl)
 {
   int x, l = sizeof(x);
-  unsigned char tmp[1600];
-  int request;
+  int request, oldlen, i;
   int lenin = 0;
 cp
   if(getsockopt(cl->meta_socket, SOL_SOCKET, SO_ERROR, &x, &l) < 0)
@@ -937,22 +944,66 @@ cp
       return -1;
     }
 
-  if(read(cl->meta_socket, &tmp, 1) <= 0)
+  if(cl->buflen >= MAXBUFSIZE)
     {
-      syslog(LOG_ERR, "Receive failed: %m");
+      syslog(LOG_ERR, "Metadata read buffer full! Discarding contents.");
+      cl->buflen = 0;
+    }
+
+  lenin = read(cl->meta_socket, cl->buffer, MAXBUFSIZE-cl->buflen);
+
+  if(lenin<=0)
+    {
+      syslog(LOG_ERR, "Metadata socket read error: %m");
       return -1;
     }
 
-  request = (int)(tmp[0]);
+  oldlen = cl->buflen;
+  cl->buflen += lenin;
 
-  if(debug_lvl > 3)
-    syslog(LOG_DEBUG, "got request %d", request);
+  for(;;)
+    {
+      cl->reqlen = 0;
 
-  if(request_handlers[request] == NULL)
-    syslog(LOG_ERR, "Unknown request %d.", request);
-  else
-    if(request_handlers[request](cl) < 0)
-      return -1;
+      for(i = oldlen; i < cl->buflen; i++)
+        {
+          if(cl->buffer[i] == '\n')
+            {
+              cl->buffer[i] = 0;  /* replace end-of-line by end-of-string so we can use sscanf */
+              cl->reqlen = i + 1;
+              break;
+            }
+        }
+
+      if(cl->reqlen)
+        {
+          if(sscanf(cl->buffer, "%d", &request) == 1)
+            {
+              if(request_handlers[request] == NULL)
+                {
+                  syslog(LOG_ERR, "Unknown request: %s", cl->buffer);
+                  return 0;
+                }
+
+              if(debug_lvl > 3)
+                syslog(LOG_DEBUG, "Got request: %s", cl->buffer);                             
+
+              request_handlers[request](cl);
+            }
+          else
+            {
+              syslog(LOG_ERR, "Bogus data received: %s", cl->buffer);
+            }
+
+          cl->buflen -= cl->reqlen;
+          memmove(cl->buffer, cl->buffer + cl->reqlen, cl->buflen);
+          oldlen = 0;
+        }
+      else
+        {
+          break;
+        }
+    }
 cp  
   return 0;
 }