Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 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 | |
| 16 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); |
| 17 | MODULE_DESCRIPTION("x_tables NFLOG target"); |
| 18 | MODULE_LICENSE("GPL"); |
| 19 | MODULE_ALIAS("ipt_NFLOG"); |
| 20 | MODULE_ALIAS("ip6t_NFLOG"); |
| 21 | |
| 22 | static unsigned int |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 23 | nflog_tg(struct sk_buff *skb, const struct net_device *in, |
| 24 | const struct net_device *out, unsigned int hooknum, |
| 25 | const struct xt_target *target, const void *targinfo) |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 26 | { |
| 27 | const struct xt_nflog_info *info = 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 | |
Herbert Xu | 3db05fe | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 35 | nf_log_packet(target->family, hooknum, skb, in, out, &li, |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 36 | "%s", info->prefix); |
| 37 | return XT_CONTINUE; |
| 38 | } |
| 39 | |
Jan Engelhardt | e1931b7 | 2007-07-07 22:16:26 -0700 | [diff] [blame] | 40 | static bool |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 41 | nflog_tg_check(const char *tablename, const void *entry, |
| 42 | const struct xt_target *target, void *targetinfo, |
| 43 | unsigned int hookmask) |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 44 | { |
Jan Engelhardt | a47362a | 2007-07-07 22:16:55 -0700 | [diff] [blame] | 45 | const struct xt_nflog_info *info = targetinfo; |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 46 | |
| 47 | if (info->flags & ~XT_NFLOG_MASK) |
Jan Engelhardt | e1931b7 | 2007-07-07 22:16:26 -0700 | [diff] [blame] | 48 | return false; |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 49 | if (info->prefix[sizeof(info->prefix) - 1] != '\0') |
Jan Engelhardt | e1931b7 | 2007-07-07 22:16:26 -0700 | [diff] [blame] | 50 | return false; |
| 51 | return true; |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 52 | } |
| 53 | |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 54 | static struct xt_target nflog_tg_reg[] __read_mostly = { |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 55 | { |
| 56 | .name = "NFLOG", |
| 57 | .family = AF_INET, |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 58 | .checkentry = nflog_tg_check, |
| 59 | .target = nflog_tg, |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 60 | .targetsize = sizeof(struct xt_nflog_info), |
| 61 | .me = THIS_MODULE, |
| 62 | }, |
| 63 | { |
| 64 | .name = "NFLOG", |
| 65 | .family = AF_INET6, |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 66 | .checkentry = nflog_tg_check, |
| 67 | .target = nflog_tg, |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 68 | .targetsize = sizeof(struct xt_nflog_info), |
| 69 | .me = THIS_MODULE, |
| 70 | }, |
| 71 | }; |
| 72 | |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 73 | static int __init nflog_tg_init(void) |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 74 | { |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 75 | return xt_register_targets(nflog_tg_reg, ARRAY_SIZE(nflog_tg_reg)); |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 76 | } |
| 77 | |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 78 | static void __exit nflog_tg_exit(void) |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 79 | { |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 80 | xt_unregister_targets(nflog_tg_reg, ARRAY_SIZE(nflog_tg_reg)); |
Patrick McHardy | baf7b1e | 2006-11-29 02:35:38 +0100 | [diff] [blame] | 81 | } |
| 82 | |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame^] | 83 | module_init(nflog_tg_init); |
| 84 | module_exit(nflog_tg_exit); |