[sr-dev] git:5.1:ff36d82d: drouting: fix crush for empty username in ruri

[Henning Westerholt]

Module: kamailio
Branch: 5.1
Commit: ff36d82d8861ed50adf91b9e314c29ef8ee3e745
URL: https://github.com/kamailio/kamailio/commit/ff36d82d8861ed50adf91b9e314c29ef8ee3e745

Author: Dmitri Savolainen <savolainen at erinaco.ru>
Committer: Henning Westerholt <hw at kamailio.org>
Date: 2018-08-23T20:00:40+02:00

drouting: fix crush for empty username in ruri

 - uri like sip:@host crushed kamailio

(cherry picked from commit e4f3849f35ae556e317c365d56b14212e48d1dab)

---

Modified: src/modules/drouting/prefix_tree.c

---

Diff:  https://github.com/kamailio/kamailio/commit/ff36d82d8861ed50adf91b9e314c29ef8ee3e745.diff
Patch: https://github.com/kamailio/kamailio/commit/ff36d82d8861ed50adf91b9e314c29ef8ee3e745.patch

---

diff --git a/src/modules/drouting/prefix_tree.c b/src/modules/drouting/prefix_tree.c
index 099c402dec..9ce8d04bc6 100644
--- a/src/modules/drouting/prefix_tree.c
+++ b/src/modules/drouting/prefix_tree.c
@@ -98,7 +98,7 @@ rt_info_t *get_prefix(ptree_t *ptree, str *prefix, unsigned int rgid)
 
 	if(NULL == ptree)
 		goto err_exit;
-	if(NULL == prefix)
+	if(NULL == prefix || NULL == prefix->s)
 		goto err_exit;
 	tmp = prefix->s;
 	/* go the tree down to the last digit in the