1*13885a66Sdarrenr /* $NetBSD: addipopt.c,v 1.2 2012/07/22 14:27:36 darrenr Exp $ */
2bc4097aaSchristos
3bc4097aaSchristos /*
4c9d5dc6cSdarrenr * Copyright (C) 2012 by Darren Reed.
5bc4097aaSchristos *
6bc4097aaSchristos * See the IPFILTER.LICENCE file for details on licencing.
7bc4097aaSchristos *
8*13885a66Sdarrenr * Id: addipopt.c,v 1.1.1.2 2012/07/22 13:44:38 darrenr Exp $
9bc4097aaSchristos */
10bc4097aaSchristos
11bc4097aaSchristos #include "ipf.h"
12bc4097aaSchristos
13bc4097aaSchristos
addipopt(op,io,len,class)14bc4097aaSchristos int addipopt(op, io, len, class)
15bc4097aaSchristos char *op;
16bc4097aaSchristos struct ipopt_names *io;
17bc4097aaSchristos int len;
18bc4097aaSchristos char *class;
19bc4097aaSchristos {
20bc4097aaSchristos int olen = len;
21bc4097aaSchristos struct in_addr ipadr;
22bc4097aaSchristos u_short val;
23bc4097aaSchristos u_char lvl;
24bc4097aaSchristos char *s;
25bc4097aaSchristos
26bc4097aaSchristos if ((len + io->on_siz) > 48) {
27bc4097aaSchristos fprintf(stderr, "options too long\n");
28bc4097aaSchristos return 0;
29bc4097aaSchristos }
30bc4097aaSchristos len += io->on_siz;
31bc4097aaSchristos *op++ = io->on_value;
32bc4097aaSchristos if (io->on_siz > 1) {
33bc4097aaSchristos s = op;
34bc4097aaSchristos *op++ = io->on_siz;
35bc4097aaSchristos *op++ = IPOPT_MINOFF;
36bc4097aaSchristos
37bc4097aaSchristos if (class) {
38bc4097aaSchristos switch (io->on_value)
39bc4097aaSchristos {
40bc4097aaSchristos case IPOPT_SECURITY :
41bc4097aaSchristos lvl = seclevel(class);
42bc4097aaSchristos *(op - 1) = lvl;
43bc4097aaSchristos break;
44bc4097aaSchristos case IPOPT_RR :
45bc4097aaSchristos case IPOPT_TS :
46bc4097aaSchristos s[IPOPT_OLEN] = IPOPT_MINOFF - 1 + 4;
47bc4097aaSchristos break;
48bc4097aaSchristos case IPOPT_LSRR :
49bc4097aaSchristos case IPOPT_SSRR :
50bc4097aaSchristos ipadr.s_addr = inet_addr(class);
51bc4097aaSchristos s[IPOPT_OLEN] = IPOPT_MINOFF - 1 + 4;
52bc4097aaSchristos bcopy((char *)&ipadr, op, sizeof(ipadr));
53bc4097aaSchristos break;
54bc4097aaSchristos case IPOPT_SATID :
55bc4097aaSchristos val = atoi(class);
56bc4097aaSchristos bcopy((char *)&val, op, 2);
57bc4097aaSchristos break;
58bc4097aaSchristos }
59bc4097aaSchristos }
60bc4097aaSchristos }
61bc4097aaSchristos if (opts & OPT_DEBUG)
62bc4097aaSchristos fprintf(stderr, "bo: %s %d %#x: %d\n",
63bc4097aaSchristos io->on_name, io->on_value, io->on_bit, len);
64bc4097aaSchristos return len - olen;
65bc4097aaSchristos }
66