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 O_NETLINK, 31}; 32 33#define s struct idletimer_tg_info 34static 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 45static 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 56static 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 68static 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 79static 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 93void _init(void) 94{ 95 xtables_register_target(&idletimer_tg_reg); 96} 97