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1 | /* |
2 | * Copyright (c) 2006 Patrick McHardy <kaber@trash.net> |
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 version 2 as |
6 | * published by the Free Software Foundation. |
7 | */ |
8 | |
9 | #include <linux/module.h> |
10 | #include <linux/init.h> |
11 | #include <linux/skbuff.h> |
12 | |
13 | #include <linux/netfilter/x_tables.h> |
14 | #include <linux/netfilter/xt_NFLOG.h> |
15 | #include <net/netfilter/nf_log.h> |
16 | #include <net/netfilter/nfnetlink_log.h> |
17 | |
18 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); |
19 | MODULE_DESCRIPTION("Xtables: packet logging to netlink using NFLOG"); |
20 | MODULE_LICENSE("GPL"); |
21 | MODULE_ALIAS("ipt_NFLOG"); |
22 | MODULE_ALIAS("ip6t_NFLOG"); |
23 | |
24 | static unsigned int |
25 | nflog_tg(struct sk_buff *skb, const struct xt_action_param *par) |
26 | { |
27 | const struct xt_nflog_info *info = par->targinfo; |
28 | struct nf_loginfo li; |
29 | |
30 | li.type = NF_LOG_TYPE_ULOG; |
31 | li.u.ulog.copy_len = info->len; |
32 | li.u.ulog.group = info->group; |
33 | li.u.ulog.qthreshold = info->threshold; |
34 | |
35 | nfulnl_log_packet(par->family, par->hooknum, skb, par->in, |
36 | par->out, &li, info->prefix); |
37 | return XT_CONTINUE; |
38 | } |
39 | |
40 | static int nflog_tg_check(const struct xt_tgchk_param *par) |
41 | { |
42 | const struct xt_nflog_info *info = par->targinfo; |
43 | |
44 | if (info->flags & ~XT_NFLOG_MASK) |
45 | return -EINVAL; |
46 | if (info->prefix[sizeof(info->prefix) - 1] != '\0') |
47 | return -EINVAL; |
48 | return 0; |
49 | } |
50 | |
51 | static struct xt_target nflog_tg_reg __read_mostly = { |
52 | .name = "NFLOG", |
53 | .revision = 0, |
54 | .family = NFPROTO_UNSPEC, |
55 | .checkentry = nflog_tg_check, |
56 | .target = nflog_tg, |
57 | .targetsize = sizeof(struct xt_nflog_info), |
58 | .me = THIS_MODULE, |
59 | }; |
60 | |
61 | static int __init nflog_tg_init(void) |
62 | { |
63 | return xt_register_target(&nflog_tg_reg); |
64 | } |
65 | |
66 | static void __exit nflog_tg_exit(void) |
67 | { |
68 | xt_unregister_target(&nflog_tg_reg); |
69 | } |
70 | |
71 | module_init(nflog_tg_init); |
72 | module_exit(nflog_tg_exit); |
73 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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