[NETFILTER 02/04]: nf_conntrack_sip: check sname != NULL before calling strncmp

[Patrick McHardy <kaber@trash.net>]

[NETFILTER]: nf_conntrack_sip: check sname != NULL before calling strncmp

The check got lost during the conversion to nf_conntrack.

Signed-off-by: Patrick McHardy <kaber@trash.net>

---
commit c58af8c25d20e59644356f78e055eeba9edb8aae
tree c7c95d0ba93d86f6ec33dc2ae12e532dc1ce77ab
parent 4cbeda3b69e71c535ea820f5a94f4232598e3eea
author Patrick McHardy <kaber@trash.net> Tue, 14 Aug 2007 18:37:01 +0200
committer Patrick McHardy <kaber@trash.net> Tue, 14 Aug 2007 18:37:01 +0200

 net/netfilter/nf_conntrack_sip.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 1276a44..5cc9636 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -330,7 +330,8 @@ int ct_sip_get_info(struct nf_conn *ct,
 
 	while (dptr <= limit) {
 		if ((strncmp(dptr, hnfo->lname, hnfo->lnlen) != 0) &&
-		    (strncmp(dptr, hnfo->sname, hnfo->snlen) != 0)) {
+		    (hnfo->sname == NULL ||
+		     strncmp(dptr, hnfo->sname, hnfo->snlen) != 0)) {
 			dptr++;
 			continue;
 		}