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51 lines
929 B
C
51 lines
929 B
C
/* $NetBSD: buildopts.c,v 1.2 2012/07/22 14:27:36 darrenr Exp $ */
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/*
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* Copyright (C) 2012 by Darren Reed.
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*
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* Id: buildopts.c,v 1.1.1.2 2012/07/22 13:44:38 darrenr Exp $
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*/
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#include "ipf.h"
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u_32_t buildopts(cp, op, len)
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char *cp, *op;
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int len;
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{
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struct ipopt_names *io;
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u_32_t msk = 0;
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char *s, *t;
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int inc;
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for (s = strtok(cp, ","); s; s = strtok(NULL, ",")) {
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if ((t = strchr(s, '=')))
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*t++ = '\0';
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else
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t = "";
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for (io = ionames; io->on_name; io++) {
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if (strcasecmp(s, io->on_name) || (msk & io->on_bit))
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continue;
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if ((inc = addipopt(op, io, len, t))) {
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op += inc;
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len += inc;
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}
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msk |= io->on_bit;
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break;
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}
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if (!io->on_name) {
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fprintf(stderr, "unknown IP option name %s\n", s);
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return 0;
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}
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}
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while ((len & 3) != 3) {
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*op++ = IPOPT_NOP;
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len++;
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}
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*op++ = IPOPT_EOL;
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len++;
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return len;
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}
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