xref: /xnu-8792.61.2/bsd/net/if_pflog.h (revision 42e220869062b56f8d7d0726fd4c88954f87902c)

/*
 * Copyright (c) 2007-2018 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

/* $apfw: if_pflog.h,v 1.3 2007/08/13 22:18:33 jhw Exp $ */
/* $OpenBSD: if_pflog.h,v 1.14 2006/10/25 11:27:01 henning Exp $ */
/*
 * Copyright 2001 Niels Provos <[email protected]>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _NET_IF_PFLOG_H_
#define _NET_IF_PFLOG_H_

#if PF || !defined(KERNEL)

#ifdef  __cplusplus
extern "C" {
#endif

#define PFLOGIFS_MAX            16
#define PFLOGIF_ZONE_MAX_ELEM           MIN(IFNETS_MAX, PFLOGIFS_MAX)

#if KERNEL_PRIVATE
struct pflog_softc {
	struct ifnet            *sc_if;         /* back ptr to interface */
	u_int32_t               sc_flags;
#define IFPFLF_DETACHING        0x1
	int                     sc_unit;
	LIST_ENTRY(pflog_softc) sc_list;
};
#endif /* KERNEL_PRIVATE */

#define PFLOG_RULESET_NAME_SIZE 16

struct pfloghdr {
	u_int8_t        length;
	sa_family_t     af;
	u_int8_t        action;
	u_int8_t        reason;
	char            ifname[IFNAMSIZ];
	char            ruleset[PFLOG_RULESET_NAME_SIZE];
	u_int32_t       rulenr;
	u_int32_t       subrulenr;
	uid_t           uid;
	pid_t           pid;
	uid_t           rule_uid;
	pid_t           rule_pid;
	u_int8_t        dir;
	u_int8_t        pad[3];
};

#define PFLOG_HDRLEN            sizeof(struct pfloghdr)
/* minus pad, also used as a signature */
#define PFLOG_REAL_HDRLEN       offsetof(struct pfloghdr, pad)

#ifdef KERNEL_PRIVATE

#if PFLOG
#define PFLOG_PACKET(i, x, a, b, c, d, e, f, g, h) pflog_packet(i,a,b,c,d,e,f,g,h)
#else
#define PFLOG_PACKET(i, x, a, b, c, d, e, f, g, h) ((void)0)
#endif /* PFLOG */

__private_extern__ void pfloginit(void);
#endif /* KERNEL_PRIVATE */

#ifdef  __cplusplus
}
#endif
#endif /* PF || !KERNEL */
#endif /* _NET_IF_PFLOG_H_ */