/* * Copyright (c) 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@ */ /* * Copyright (c) 2001 Daniel Hartmeier * Copyright (c) 2002 - 2013 Henning Brauer * NAT64 - Copyright (c) 2010 Viagenie Inc. (http://www.viagenie.ca) * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - 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 COPYRIGHT HOLDERS AND CONTRIBUTORS * "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 * COPYRIGHT HOLDERS OR CONTRIBUTORS 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. * * Effort sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F30602-01-2-0537. * */ #ifndef _NET_NAT464_UTILS_H_ #define _NET_NAT464_UTILS_H_ #include <netinet/in.h> #include <net/pf_pbuf.h> #define clat_log0(x) do { log x; } while (0) #define clat_log1(x) do { if (clat_debug >= 1) log x; } while (0) #define clat_log2(x) do { if (clat_debug >= 2) log x; } while (0) #define CLAT46_NEEDED(x) \ (!IN_LOOPBACK(x) && !IN_LINKLOCAL(x) && !IN_MULTICAST(x) && \ INADDR_BROADCAST != x) #define CLAT64_NEEDED(x) \ (!IN6_IS_ADDR_LOOPBACK(x) && !IN6_IS_ADDR_LINKLOCAL(x) && \ !IN6_IS_ADDR_MULTICAST(x)) extern int clat_debug; enum { NT_DROP, NT_NAT64 }; enum { NT_IN, NT_OUT }; struct nat464_addr { union { struct in_addr _v4addr; struct in6_addr _v6addr; uint8_t _addr8[16]; uint16_t _addr16[8]; uint32_t _addr32[4]; } nat464a; /* 128-bit address */ #define natv4addr nat464a._v4addr #define natv6addr nat464a._v6addr #define nataddr8 nat464a._addr8 #define nataddr16 nat464a._addr16 #define nataddr32 nat464a._addr32 }; int nat464_translate_icmp(int, void *); int nat464_translate_icmp_ip(pbuf_t *, uint16_t, uint16_t *, uint16_t *, uint8_t, uint8_t, uint16_t, struct nat464_addr *, struct nat464_addr *, protocol_family_t, protocol_family_t ); int nat464_synthesize_ipv6(ifnet_t, const struct in_addr *, struct in6_addr *); int nat464_synthesize_ipv4(ifnet_t, const struct in6_addr *, struct in_addr *); int nat464_translate_64(pbuf_t *, int, uint8_t, uint8_t *, uint8_t, struct in_addr, struct in_addr, uint64_t, boolean_t *); int nat464_translate_46(pbuf_t *, uint16_t, uint8_t, uint8_t, uint8_t, struct in6_addr, struct in6_addr, uint16_t); int nat464_translate_proto(pbuf_t *, struct nat464_addr *, struct nat464_addr *, uint8_t, protocol_family_t, protocol_family_t, int, boolean_t); int nat464_insert_frag46(pbuf_t *, uint16_t, uint16_t, boolean_t); int nat464_remove_frag64(pbuf_t *, uint32_t, uint16_t, boolean_t); uint16_t nat464_cksum_fixup(uint16_t, uint16_t, uint16_t, uint8_t); #endif /* !_NET_NAT464_UTILS_H_ */