From: Mark Michelson <mmichelson@digium.com>
Date: Wed, 21 Mar 2012 15:44:55 +0000 (+0000)
Subject: Prevent potentially passing a NULL pointer to strcasecmp()
X-Git-Tag: certified/1.8.11-cert1~3^2~12
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=75ff6925420a6847373fccd9faa9bfd3147d288e;p=thirdparty%2Fasterisk.git

Prevent potentially passing a NULL pointer to strcasecmp()



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8-digiumphones@360188 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/main/pbx.c b/main/pbx.c
index 913508965d..9e3f5325be 100644
--- a/main/pbx.c
+++ b/main/pbx.c
@@ -4574,6 +4574,10 @@ static int handle_presencechange(void *datap)
 		}
 		ast_str_set(&hint_app, 0, "%s", app);
 		parse = parse_hint_presence(hint_app);
+		if (ast_strlen_zero(parse)) {
+			ao2_unlock(hint);
+			continue;
+		}
 		if (strcasecmp(parse, pc->provider)) {
 			/* The hint does not monitor the presence provider. */
 			ao2_unlock(hint);