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
27 enum {
28 O_TIMEOUT = 0,
29 O_LABEL,
30 O_NETLINK,
31 };
32
33 #define s struct idletimer_tg_info
34 static const struct xt_option_entry idletimer_tg_opts[] = {
35 {.name = "timeout", .id = O_TIMEOUT, .type = XTTYPE_UINT32,
36 .flags = XTOPT_MAND | XTOPT_PUT, XTOPT_POINTER(s, timeout)},
37 {.name = "label", .id = O_LABEL, .type = XTTYPE_STRING,
38 .flags = XTOPT_MAND | XTOPT_PUT, XTOPT_POINTER(s, label)},
39 {.name = "send_nl_msg", .id = O_NETLINK, .type = XTTYPE_UINT8,
40 .flags = XTOPT_PUT, XTOPT_POINTER(s, send_nl_msg)},
41 XTOPT_TABLEEND,
42 };
43 #undef s
44
idletimer_tg_help(void)45 static void idletimer_tg_help(void)
46 {
47 printf(
48 "IDLETIMER target options:\n"
49 " --timeout time Timeout until the notification is sent (in seconds)\n"
50 " --label string Unique rule identifier\n"
51 " --send_nl_msg (0/1) Enable netlink messages,"
52 " and show remaining time in sysfs. Defaults to 0.\n"
53 "\n");
54 }
55
idletimer_tg_print(const void * ip,const struct xt_entry_target * target,int numeric)56 static void idletimer_tg_print(const void *ip,
57 const struct xt_entry_target *target,
58 int numeric)
59 {
60 struct idletimer_tg_info *info =
61 (struct idletimer_tg_info *) target->data;
62
63 printf(" timeout:%u", info->timeout);
64 printf(" label:%s", info->label);
65 printf(" send_nl_msg:%u", info->send_nl_msg);
66 }
67
idletimer_tg_save(const void * ip,const struct xt_entry_target * target)68 static void idletimer_tg_save(const void *ip,
69 const struct xt_entry_target *target)
70 {
71 struct idletimer_tg_info *info =
72 (struct idletimer_tg_info *) target->data;
73
74 printf(" --timeout %u", info->timeout);
75 printf(" --label %s", info->label);
76 printf(" --send_nl_msg %u", info->send_nl_msg);
77 }
78
79 static struct xtables_target idletimer_tg_reg = {
80 .family = NFPROTO_UNSPEC,
81 .name = "IDLETIMER",
82 .version = XTABLES_VERSION,
83 .revision = 1,
84 .size = XT_ALIGN(sizeof(struct idletimer_tg_info)),
85 .userspacesize = offsetof(struct idletimer_tg_info, timer),
86 .help = idletimer_tg_help,
87 .x6_parse = xtables_option_parse,
88 .print = idletimer_tg_print,
89 .save = idletimer_tg_save,
90 .x6_options = idletimer_tg_opts,
91 };
92
_init(void)93 void _init(void)
94 {
95 xtables_register_target(&idletimer_tg_reg);
96 }
97