Prevent potential buffer overflow on AMI MixMonitor command.

Don't be alarmed. This only affected trunk, and it would have
required manager access to your system.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@351900 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_mixmonitor.c

@@ -923,9 +923,7 @@ static int manager_mixmonitor(struct mansession *s, const struct message *m)
 		return AMI_SUCCESS;
 	}
 
-	strcpy(args, file);
-	strcat(args, ",");
-	strcat(args, options);
+	snprintf(args, sizeof(args), "%s,%s", file, options);
 
 	ast_channel_lock(c);
 	res = mixmonitor_exec(c, args);