From 0db0e0c2163395949d878e689f62e3fc804c0090 Mon Sep 17 00:00:00 2001
From: Giovanni Bajo <rasky@develer.com>
Date: Wed, 2 May 2012 00:16:08 +0200
Subject: [PATCH] Fix a bug in rdlen update while decompressing a name

---
 src/dnssec.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/dnssec.c b/src/dnssec.c
index 6bb7a05..6cf115c 100644
--- a/src/dnssec.c
+++ b/src/dnssec.c
@@ -141,8 +141,10 @@ static int process_domain_name(struct dns_header *header, size_t pktlen,
       label_type = count & 0xC0;
       if (label_type == 0xC0)
         {
+          int l2;
           if (p >= end)
             return 0;
+          l2 = *p++;
           if (hops == 0)
             {
               if (p - *rdata > *rdlen)
@@ -152,7 +154,7 @@ static int process_domain_name(struct dns_header *header, size_t pktlen,
             }
           if (++hops == 256)
             return 0;
-          p = (unsigned char*)header + (count & 0x3F) * 256 + *p;
+          p = (unsigned char*)header + (count & 0x3F) * 256 + l2;
         }
       else if (label_type == 0x00)
         {