1/*
2 * Shared library add-on to iptables to add SECMARK target support.
3 *
4 * Based on the MARK target.
5 *
6 * Copyright (C) 2006 Red Hat, Inc., James Morris <jmorris@redhat.com>
7 */
8#include <stdio.h>
9#include <xtables.h>
10#include <linux/netfilter/xt_SECMARK.h>
11
12#define PFX "SECMARK target: "
13
14enum {
15	O_SELCTX = 0,
16};
17
18static void SECMARK_help(void)
19{
20	printf(
21"SECMARK target options:\n"
22"  --selctx value                     Set the SELinux security context\n");
23}
24
25static const struct xt_option_entry SECMARK_opts[] = {
26	{.name = "selctx", .id = O_SELCTX, .type = XTTYPE_STRING,
27	 .flags = XTOPT_MAND | XTOPT_PUT,
28	 XTOPT_POINTER(struct xt_secmark_target_info, secctx)},
29	XTOPT_TABLEEND,
30};
31
32static void SECMARK_parse(struct xt_option_call *cb)
33{
34	struct xt_secmark_target_info *info = cb->data;
35
36	xtables_option_parse(cb);
37	info->mode = SECMARK_MODE_SEL;
38}
39
40static void print_secmark(const struct xt_secmark_target_info *info)
41{
42	switch (info->mode) {
43	case SECMARK_MODE_SEL:
44		printf("selctx %s", info->secctx);
45		break;
46
47	default:
48		xtables_error(OTHER_PROBLEM, PFX "invalid mode %hhu\n", info->mode);
49	}
50}
51
52static void SECMARK_print(const void *ip, const struct xt_entry_target *target,
53                          int numeric)
54{
55	const struct xt_secmark_target_info *info =
56		(struct xt_secmark_target_info*)(target)->data;
57
58	printf(" SECMARK ");
59	print_secmark(info);
60}
61
62static void SECMARK_save(const void *ip, const struct xt_entry_target *target)
63{
64	const struct xt_secmark_target_info *info =
65		(struct xt_secmark_target_info*)target->data;
66
67	printf(" --");
68	print_secmark(info);
69}
70
71static struct xtables_target secmark_target = {
72	.family		= NFPROTO_UNSPEC,
73	.name		= "SECMARK",
74	.version	= XTABLES_VERSION,
75	.revision	= 0,
76	.size		= XT_ALIGN(sizeof(struct xt_secmark_target_info)),
77	.userspacesize	= XT_ALIGN(sizeof(struct xt_secmark_target_info)),
78	.help		= SECMARK_help,
79	.print		= SECMARK_print,
80	.save		= SECMARK_save,
81	.x6_parse	= SECMARK_parse,
82	.x6_options	= SECMARK_opts,
83};
84
85void _init(void)
86{
87	xtables_register_target(&secmark_target);
88}
89