1145519Sdarrenr/*	$FreeBSD$	*/
2145510Sdarrenr
3145510Sdarrenr/*
4255332Scy * Copyright (C) 2012 by Darren Reed.
5145510Sdarrenr *
6145510Sdarrenr * See the IPFILTER.LICENCE file for details on licencing.
7145510Sdarrenr *
8255332Scy * $Id$
9145510Sdarrenr */
10145510Sdarrenr
11145510Sdarrenr#include "ipf.h"
12145510Sdarrenr
13145510Sdarrenr
14145510Sdarrenrint addipopt(op, io, len, class)
15255332Scy	char *op;
16255332Scy	struct ipopt_names *io;
17255332Scy	int len;
18255332Scy	char *class;
19145510Sdarrenr{
20145510Sdarrenr	int olen = len;
21145510Sdarrenr	struct in_addr ipadr;
22145510Sdarrenr	u_short val;
23145510Sdarrenr	u_char lvl;
24145510Sdarrenr	char *s;
25145510Sdarrenr
26145510Sdarrenr	if ((len + io->on_siz) > 48) {
27145510Sdarrenr		fprintf(stderr, "options too long\n");
28145510Sdarrenr		return 0;
29145510Sdarrenr	}
30145510Sdarrenr	len += io->on_siz;
31145510Sdarrenr	*op++ = io->on_value;
32145510Sdarrenr	if (io->on_siz > 1) {
33145510Sdarrenr		s = op;
34145510Sdarrenr		*op++ = io->on_siz;
35145510Sdarrenr		*op++ = IPOPT_MINOFF;
36145510Sdarrenr
37145510Sdarrenr		if (class) {
38145510Sdarrenr			switch (io->on_value)
39145510Sdarrenr			{
40145510Sdarrenr			case IPOPT_SECURITY :
41145510Sdarrenr				lvl = seclevel(class);
42145510Sdarrenr				*(op - 1) = lvl;
43145510Sdarrenr				break;
44255332Scy			case IPOPT_RR :
45255332Scy			case IPOPT_TS :
46255332Scy				s[IPOPT_OLEN] = IPOPT_MINOFF - 1 + 4;
47255332Scy				break;
48145510Sdarrenr			case IPOPT_LSRR :
49145510Sdarrenr			case IPOPT_SSRR :
50145510Sdarrenr				ipadr.s_addr = inet_addr(class);
51145510Sdarrenr				s[IPOPT_OLEN] = IPOPT_MINOFF - 1 + 4;
52145510Sdarrenr				bcopy((char *)&ipadr, op, sizeof(ipadr));
53145510Sdarrenr				break;
54145510Sdarrenr			case IPOPT_SATID :
55145510Sdarrenr				val = atoi(class);
56145510Sdarrenr				bcopy((char *)&val, op, 2);
57145510Sdarrenr				break;
58145510Sdarrenr			}
59145510Sdarrenr		}
60145510Sdarrenr	}
61145510Sdarrenr	if (opts & OPT_DEBUG)
62145510Sdarrenr		fprintf(stderr, "bo: %s %d %#x: %d\n",
63145510Sdarrenr			io->on_name, io->on_value, io->on_bit, len);
64145510Sdarrenr	return len - olen;
65145510Sdarrenr}
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