rem: parse_string(const unsigned char *s, struct ipt_string_info *info)
add: parse_string(const char *s, struct ipt_string_info *info)
context: parse_string(const unsigned char *s, struct ipt_string_info *info){		if (strlen(s) <= IPT_STRING_MAX_PATTERN_SIZE) {		strncpy(info->pattern, s, IPT_STRING_MAX_PATTERN_SIZE);		info->patlen = strlen(s);		return;	}	exit_error(PARAMETER_PROBLEM, "STRING too long `%s'", s);}