Changeset 50007 in vbox for trunk/src/VBox/Devices

Timestamp:

Dec 27, 2013 1:12:35 AM (11 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

91453

Message:

udp_proxy_input: verify udp checksum.

File:

• trunk/src/VBox/Devices/Network/lwip-new/src/core/udp.c (modified) (1 diff)

trunk/src/VBox/Devices/Network/lwip-new/src/core/udp.c

@@ -533 +533 @@
   }
 
+  LWIP_DEBUGF(UDP_DEBUG, ("udp_proxy_input: received datagram of length %"U16_F"\n", p->tot_len));
+
   udphdr = (struct udp_hdr *)p->payload;
-
-  LWIP_DEBUGF(UDP_DEBUG, ("udp_proxy_input: received datagram of length %"U16_F"\n", p->tot_len));
+  if (udphdr->chksum != 0) {
+    LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE,
+                ("udp_proxy_input: calculating checksum\n"));
+    if (ipX_chksum_pseudo(ip_current_is_v6(), p, IP_PROTO_UDP, p->tot_len,
+                          ipX_current_src_addr(),
+                          ipX_current_dest_addr()) != 0)
+    {
+      LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_LEVEL_WARNING,
+                  ("udp_proxy_input: UDP datagram discarded due to failing checksum\n"));
+      UDP_STATS_INC(udp.chkerr);
+      UDP_STATS_INC(udp.drop);
+      snmp_inc_udpinerrors();
+      pbuf_free(p);
+      goto end;
+    }
+  }
 
   /* convert src and dest ports to host byte order */