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net/netfilter/xt_NFLOG.c
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81f7e3824 Initial Release, ... |
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/* * 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> #include <net/netfilter/nf_log.h> #include <net/netfilter/nfnetlink_log.h> MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); MODULE_DESCRIPTION("Xtables: packet logging to netlink using NFLOG"); MODULE_LICENSE("GPL"); MODULE_ALIAS("ipt_NFLOG"); MODULE_ALIAS("ip6t_NFLOG"); static unsigned int nflog_tg(struct sk_buff *skb, const struct xt_action_param *par) { const struct xt_nflog_info *info = par->targinfo; struct net *net = xt_net(par); 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; li.u.ulog.flags = 0; if (info->flags & XT_NFLOG_F_COPY_LEN) li.u.ulog.flags |= NF_LOG_F_COPY_LEN; nfulnl_log_packet(net, xt_family(par), xt_hooknum(par), skb, xt_in(par), xt_out(par), &li, info->prefix); return XT_CONTINUE; } static int nflog_tg_check(const struct xt_tgchk_param *par) { const struct xt_nflog_info *info = par->targinfo; if (info->flags & ~XT_NFLOG_MASK) return -EINVAL; if (info->prefix[sizeof(info->prefix) - 1] != '\0') return -EINVAL; return 0; } static struct xt_target nflog_tg_reg __read_mostly = { .name = "NFLOG", .revision = 0, .family = NFPROTO_UNSPEC, .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_target(&nflog_tg_reg); } static void __exit nflog_tg_exit(void) { xt_unregister_target(&nflog_tg_reg); } module_init(nflog_tg_init); module_exit(nflog_tg_exit); |