xref: /freebsd/sbin/ipf/libipf/optname.c (revision efeb8bffe34422937c7f8df836afb5b817366d16)

/*	$FreeBSD$	*/

/*
 * Copyright (C) 2012 by Darren Reed.
 *
 * See the IPFILTER.LICENCE file for details on licencing.
 *
 * $Id$
 */

#include "ipf.h"


u_32_t
optname(char ***cp, u_short *sp, int linenum)
{
	struct ipopt_names *io, *so;
	u_long msk = 0;
	u_short smsk = 0;
	char *s;
	int sec = 0;

	for (s = strtok(**cp, ","); s; s = strtok(NULL, ",")) {
		for (io = ionames; io->on_name; io++)
			if (!strcasecmp(s, io->on_name)) {
				msk |= io->on_bit;
				break;
			}
		if (!io->on_name) {
			fprintf(stderr, "%d: unknown IP option name %s\n",
				linenum, s);
			return 0;
		}
		if (!strcasecmp(s, "sec-class"))
			sec = 1;
	}

	if (sec && !*(*cp + 1)) {
		fprintf(stderr, "%d: missing security level after sec-class\n",
			linenum);
		return 0;
	}

	if (sec) {
		(*cp)++;
		for (s = strtok(**cp, ","); s; s = strtok(NULL, ",")) {
			for (so = secclass; so->on_name; so++)
				if (!strcasecmp(s, so->on_name)) {
					smsk |= so->on_bit;
					break;
				}
			if (!so->on_name) {
				fprintf(stderr,
					"%d: no such security level: %s\n",
					linenum, s);
				return 0;
			}
		}
		if (smsk)
			*sp = smsk;
	}
	return msk;
}