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Dump mdp header if we fail to parse length field

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This commit is contained in:
Jeremy Lakeman 2013-05-30 13:24:37 +09:30
parent f88dff08a6
commit 96daa47b95
1 changed files with 4 additions and 0 deletions
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4
overlay_packetformats.c
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@ -422,6 +422,7 @@ int packetOkOverlay(struct overlay_interface *interface,unsigned char *packet, s
struct subscriber *nexthop=NULL;
bzero(f.broadcast_id.id, BROADCAST_LEN);
unsigned char *header_start = ob_ptr(b)+ob_position(b);
int header_valid = parseMdpPacketHeader(&context, &f, b, &nexthop);
if (header_valid<0){
ret = WHY("Header is too short");
@ -439,6 +440,9 @@ int packetOkOverlay(struct overlay_interface *interface,unsigned char *packet, s
case ENCAP_OVERLAY:
payload_len = ob_get_ui16(b);
if (payload_len > ob_remaining(b)){
unsigned char *current = ob_ptr(b)+ob_position(b);
dump("Payload Header", header_start, current - header_start);
ret = WHYF("Invalid payload length (%d)", payload_len);
goto end;
}