[sr-dev] git:5.0:d3d5fcbe: topoh: improve checks for contact header processing

[Henning Westerholt]

Module: kamailio
Branch: 5.0
Commit: d3d5fcbe57c8e61bc0926250a7273b1aa9b9bf8c
URL: https://github.com/kamailio/kamailio/commit/d3d5fcbe57c8e61bc0926250a7273b1aa9b9bf8c

Author: Henning Westerholt <hw at kamailio.org>
Committer: Henning Westerholt <hw at skalatan.de>
Date: 2019-04-03T23:25:03+02:00

topoh: improve checks for contact header processing

(cherry picked from commit 101670ac2c120cf0008a860b6a766aaa529e578d)

---

Modified: src/modules/topoh/th_msg.c

---

Diff:  https://github.com/kamailio/kamailio/commit/d3d5fcbe57c8e61bc0926250a7273b1aa9b9bf8c.diff
Patch: https://github.com/kamailio/kamailio/commit/d3d5fcbe57c8e61bc0926250a7273b1aa9b9bf8c.patch

---

diff --git a/src/modules/topoh/th_msg.c b/src/modules/topoh/th_msg.c
index f0c3420309..3de34f13f1 100644
--- a/src/modules/topoh/th_msg.c
+++ b/src/modules/topoh/th_msg.c
@@ -267,6 +267,11 @@ int th_mask_contact(sip_msg_t *msg)
 	}
 
 	c = ((contact_body_t*)msg->contact->parsed)->contacts;
+	if(c == NULL)
+	{
+		LM_ERR("invalid contact header\n");
+		return -1;
+	}
 	in = c->uri;
 
 	out.s = th_mask_encode(in.s, in.len, &th_uri_prefix, &out.len);