lib/common/optname.c

	optname.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * Copyright (C) 1993-2001 by Darren Reed.
 *
 * See the IPFILTER.LICENCE file for details on licencing.
 *
 * $Id: optname.c,v 1.3 2001/06/09 17:09:24 darrenr Exp $
 */

#include "ipf.h"


u_32_t optname(cp, sp, linenum)
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;
}