From: Jelte Jansen <jeltejan@NLnetLabs.nl>
Date: Wed, 12 Oct 2005 12:27:26 +0000 (+0000)
Subject: fixed segfault when printing packet with EDNS but with unknown or no EDNS flags
X-Git-Tag: release-1.0.0~44
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a8a2acdf2f0df53e4d9ca38eb41c989d79c8c235;p=thirdparty%2Fldns.git

fixed segfault when printing packet with EDNS but with unknown or no EDNS flags
---

diff --git a/host2str.c b/host2str.c
index f1abd8ee..87774a3b 100644
--- a/host2str.c
+++ b/host2str.c
@@ -974,12 +974,21 @@ ldns_pkt2buffer_str(ldns_buffer *output, ldns_pkt *pkt)
 			lt = ldns_lookup_by_id(ldns_edns_flags, 
 					(int)ldns_pkt_edns_z(pkt));
 			
-			ldns_buffer_printf(output,
-			                   ";; EDNS: version %u, flags: %s; udp: %u\n",
-			                   ldns_pkt_edns_version(pkt),
-			                   lt->name,
-			                   ldns_pkt_edns_udp_size(pkt)
-			                   );
+			if (lt) {
+				ldns_buffer_printf(output,
+						   ";; EDNS: version %u; flags: %s; udp: %u\n",
+						   ldns_pkt_edns_version(pkt),
+						   lt->name,
+						   ldns_pkt_edns_udp_size(pkt)
+						   );
+			} else {
+				ldns_buffer_printf(output,
+						   ";; EDNS: version %u; flags: ; udp: %u\n",
+						   ldns_pkt_edns_version(pkt),
+						   ldns_pkt_edns_udp_size(pkt)
+						   );
+			}
+			
 			if (ldns_pkt_edns_data(pkt)) {
 				ldns_buffer_printf(output, ";; Data: ");
 				(void)ldns_rdf2buffer_str(output, ldns_pkt_edns_data(pkt));