+static int parse_boolean(char *arg)
+{
+ if (arg == NULL)
+ return -1;
+
+ if (strcasecmp(arg, "no") == 0 ||
+ strcasecmp(arg, "false") == 0 ||
+ strcasecmp(arg, "off" ) == 0 ||
+ strcasecmp(arg, "disable" ) == 0 ||
+ strcasecmp(arg, "n") == 0 ||
+ strcasecmp(arg, "f") == 0 ||
+ strcasecmp(arg, "0") == 0)
+ return 0;
+
+ if (strcasecmp(arg, "yes") == 0 ||
+ strcasecmp(arg, "true") == 0 ||
+ strcasecmp(arg, "on") == 0 ||
+ strcasecmp(arg, "enable" ) == 0 ||
+ strcasecmp(arg, "y") == 0 ||
+ strcasecmp(arg, "t") == 0 ||
+ strcasecmp(arg, "1") == 0)
+ return 1;
+
+ return -1;
+}
+