From bd8cf10d60560524a5c90315a85b471d14e61331 Mon Sep 17 00:00:00 2001
From: Joshua Colp <jcolp@digium.com>
Date: Thu, 3 Oct 2013 19:06:48 +0000
Subject: [PATCH] Fix a crash caused by muting and unmuting a channel in ARI
 without specifying a direction.

(closes issue ASTERISK-22637)
Reported by: Scott Griepentrog

Patch by Matt Jordan, whose office I have taken over in the name of Canada.
........

Merged revisions 400401 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@400402 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 res/ari/resource_channels.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/res/ari/resource_channels.c b/res/ari/resource_channels.c
index 4d5228168a..aaf04a3f88 100644
--- a/res/ari/resource_channels.c
+++ b/res/ari/resource_channels.c
@@ -152,6 +152,13 @@ void ast_ari_mute_channel(struct ast_variable *headers, struct ast_mute_channel_
 		return;
 	}
 
+	if (ast_strlen_zero(args->direction)) {
+		ast_ari_response_error(
+			response, 400, "Bad Request",
+			"Direction is required");
+		return;
+	}
+
 	if (!strcmp(args->direction, "in")) {
 		direction = AST_MUTE_DIRECTION_READ;
 	} else if (!strcmp(args->direction, "out")) {
@@ -181,6 +188,13 @@ void ast_ari_unmute_channel(struct ast_variable *headers, struct ast_unmute_chan
 		return;
 	}
 
+	if (ast_strlen_zero(args->direction)) {
+		ast_ari_response_error(
+			response, 400, "Bad Request",
+			"Direction is required");
+		return;
+	}
+
 	if (!strcmp(args->direction, "in")) {
 		direction = AST_MUTE_DIRECTION_READ;
 	} else if (!strcmp(args->direction, "out")) {