78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
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/*
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* Transparent proxy support for Linux/iptables
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*
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* Copyright (c) 2002-2004 BalaBit IT Ltd.
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* Author: Bal<EFBFBD>zs Scheidler
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef _IP_TPROXY_H
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#define _IP_TPROXY_H
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#ifdef __KERNEL__
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#include <linux/types.h>
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#include <linux/in.h>
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#else
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#include <netinet/in.h>
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#ifndef IP_RECVORIGADDRS
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#define IP_RECVORIGADDRS 11273
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#define IP_ORIGADDRS IP_RECVORIGADDRS
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struct in_origaddrs {
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struct in_addr ioa_srcaddr;
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struct in_addr ioa_dstaddr;
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unsigned short int ioa_srcport;
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unsigned short int ioa_dstport;
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};
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#endif
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#endif
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/*
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* used in setsockopt(SOL_IP, IP_TPROXY) should not collide
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* with values in <linux/in.h>
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*/
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#define IP_TPROXY 11274
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/* tproxy operations */
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enum {
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TPROXY_VERSION = 0,
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TPROXY_ASSIGN,
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TPROXY_UNASSIGN,
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TPROXY_QUERY,
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TPROXY_FLAGS,
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TPROXY_ALLOC,
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TPROXY_CONNECT
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};
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/* bitfields in IP_TPROXY_FLAGS */
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#define ITP_CONNECT 0x00000001
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#define ITP_LISTEN 0x00000002
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#define ITP_ESTABLISHED 0x00000004
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#define ITP_ONCE 0x00010000
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#define ITP_MARK 0x00020000
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#define ITP_APPLIED 0x00040000
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#define ITP_UNIDIR 0x00080000
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struct in_tproxy_addr{
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struct in_addr faddr;
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u_int16_t fport;
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};
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struct in_tproxy {
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/* fixed part, should not change between versions */
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u_int32_t op;
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/* extensible part */
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union _in_args {
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u_int32_t version;
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struct in_tproxy_addr addr;
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u_int32_t flags;
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} v;
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};
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#endif
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