libxt_IDLETIMER.c revision a0b2facfa1fe70d9a9e628b09bc4895de0bfd672 
1/*
2 * Shared library add-on for iptables to add IDLETIMER support.
3 *
4 * Copyright (C) 2010 Nokia Corporation. All rights reserved.
5 *
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23#include <stdio.h>
24#include <xtables.h>
25#include <linux/netfilter/xt_IDLETIMER.h>
26
27enum {
28	O_TIMEOUT = 0,
29	O_LABEL,
30};
31
32#define s struct idletimer_tg_info
33static const struct xt_option_entry idletimer_tg_opts[] = {
34	{.name = "timeout", .id = O_TIMEOUT, .type = XTTYPE_UINT32,
35	 .flags = XTOPT_MAND | XTOPT_PUT, XTOPT_POINTER(s, timeout)},
36	{.name = "label", .id = O_LABEL, .type = XTTYPE_STRING,
37	 .flags = XTOPT_MAND | XTOPT_PUT, XTOPT_POINTER(s, label)},
38	XTOPT_TABLEEND,
39};
40#undef s
41
42static void idletimer_tg_help(void)
43{
44	printf(
45"IDLETIMER target options:\n"
46" --timeout time	Timeout until the notification is sent (in seconds)\n"
47" --label string	Unique rule identifier\n"
48"\n");
49}
50
51static void idletimer_tg_print(const void *ip,
52			       const struct xt_entry_target *target,
53			       int numeric)
54{
55	struct idletimer_tg_info *info =
56		(struct idletimer_tg_info *) target->data;
57
58	printf(" timeout:%u", info->timeout);
59	printf(" label:%s", info->label);
60}
61
62static void idletimer_tg_save(const void *ip,
63			      const struct xt_entry_target *target)
64{
65	struct idletimer_tg_info *info =
66		(struct idletimer_tg_info *) target->data;
67
68	printf(" --timeout %u", info->timeout);
69	printf(" --label %s", info->label);
70}
71
72static struct xtables_target idletimer_tg_reg = {
73	.family	       = NFPROTO_UNSPEC,
74	.name	       = "IDLETIMER",
75	.version       = XTABLES_VERSION,
76	.revision      = 0,
77	.size	       = XT_ALIGN(sizeof(struct idletimer_tg_info)),
78	.userspacesize = offsetof(struct idletimer_tg_info, timer),
79	.help	       = idletimer_tg_help,
80	.x6_parse      = xtables_option_parse,
81	.print	       = idletimer_tg_print,
82	.save	       = idletimer_tg_save,
83	.x6_options    = idletimer_tg_opts,
84};
85
86void _init(void)
87{
88	xtables_register_target(&idletimer_tg_reg);
89}
90