1/*
2 * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19#include "cache.h"
20#include "conntrackd.h"
21#include "alarm.h"
22
23#include <stdio.h>
24
25static void timeout(struct alarm_block *a, void *data)
26{
27	struct cache_object *obj = data;
28
29	cache_del(obj->cache, obj);
30	cache_object_free(obj);
31}
32
33static void timer_add(struct cache_object *obj, void *data)
34{
35	struct alarm_block *a = data;
36
37	init_alarm(a, obj, timeout);
38	add_alarm(a, CONFIG(cache_timeout), 0);
39}
40
41static void timer_update(struct cache_object *obj, void *data)
42{
43	struct alarm_block *a = data;
44	add_alarm(a, CONFIG(cache_timeout), 0);
45}
46
47static void timer_destroy(struct cache_object *obj, void *data)
48{
49	struct alarm_block *a = data;
50	del_alarm(a);
51}
52
53static int timer_dump(struct cache_object *obj, void *data, char *buf, int type)
54{
55	struct timeval tv, tmp;
56 	struct alarm_block *a = data;
57
58	if (type == NFCT_O_XML)
59		return 0;
60
61	if (!alarm_pending(a))
62		return 0;
63
64	gettimeofday(&tv, NULL);
65	timersub(&a->tv, &tv, &tmp);
66	return sprintf(buf, " [expires in %lds]", tmp.tv_sec);
67}
68
69struct cache_feature timer_feature = {
70	.size		= sizeof(struct alarm_block),
71	.add		= timer_add,
72	.update		= timer_update,
73	.destroy	= timer_destroy,
74	.dump		= timer_dump
75};
76