| /* |
| * Copyright (c) 2006 Patrick McHardy <kaber@trash.net> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/skbuff.h> |
| |
| #include <linux/netfilter/x_tables.h> |
| #include <linux/netfilter/xt_NFLOG.h> |
| |
| MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); |
| MODULE_DESCRIPTION("x_tables NFLOG target"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("ipt_NFLOG"); |
| MODULE_ALIAS("ip6t_NFLOG"); |
| |
| static unsigned int |
| nflog_tg(struct sk_buff *skb, const struct net_device *in, |
| const struct net_device *out, unsigned int hooknum, |
| const struct xt_target *target, const void *targinfo) |
| { |
| const struct xt_nflog_info *info = targinfo; |
| struct nf_loginfo li; |
| |
| li.type = NF_LOG_TYPE_ULOG; |
| li.u.ulog.copy_len = info->len; |
| li.u.ulog.group = info->group; |
| li.u.ulog.qthreshold = info->threshold; |
| |
| nf_log_packet(target->family, hooknum, skb, in, out, &li, |
| "%s", info->prefix); |
| return XT_CONTINUE; |
| } |
| |
| static bool |
| nflog_tg_check(const char *tablename, const void *entry, |
| const struct xt_target *target, void *targetinfo, |
| unsigned int hookmask) |
| { |
| const struct xt_nflog_info *info = targetinfo; |
| |
| if (info->flags & ~XT_NFLOG_MASK) |
| return false; |
| if (info->prefix[sizeof(info->prefix) - 1] != '\0') |
| return false; |
| return true; |
| } |
| |
| static struct xt_target nflog_tg_reg[] __read_mostly = { |
| { |
| .name = "NFLOG", |
| .family = AF_INET, |
| .checkentry = nflog_tg_check, |
| .target = nflog_tg, |
| .targetsize = sizeof(struct xt_nflog_info), |
| .me = THIS_MODULE, |
| }, |
| { |
| .name = "NFLOG", |
| .family = AF_INET6, |
| .checkentry = nflog_tg_check, |
| .target = nflog_tg, |
| .targetsize = sizeof(struct xt_nflog_info), |
| .me = THIS_MODULE, |
| }, |
| }; |
| |
| static int __init nflog_tg_init(void) |
| { |
| return xt_register_targets(nflog_tg_reg, ARRAY_SIZE(nflog_tg_reg)); |
| } |
| |
| static void __exit nflog_tg_exit(void) |
| { |
| xt_unregister_targets(nflog_tg_reg, ARRAY_SIZE(nflog_tg_reg)); |
| } |
| |
| module_init(nflog_tg_init); |
| module_exit(nflog_tg_exit); |