/*
 * Copyright (c) 1993, 1994, 1997
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * @(#) $Header: /usr/cvsroot/wpdpack/Include/ip6_misc.h,v 1.1 2002/08/02 13:25:13 degioanni Exp $ (LBL)
 */

/*
 * This file contains a collage of declarations for IPv6 from FreeBSD not present in Windows
 */

#include <winsock2.h>

#ifndef __MINGW32__
#include <ws2tcpip.h>
#endif /* __MINGW32__ */

#undef IN_MULTICAST
#define IN_MULTICAST(a) IN_CLASSD(a)

#define IN_EXPERIMENTAL(a) ((((u_int32_t) (a)) & 0xe0000000) == 0xe0000000)

#define IN_LOOPBACKNET 127

#ifdef __MINGW32__
/* IPv6 address */
struct in6_addr {
    union {
        u_int8_t u6_addr8[16];
        u_int16_t u6_addr16[8];
        u_int32_t u6_addr32[4];
    } in6_u;
#define s6_addr   in6_u.u6_addr8
#define s6_addr16 in6_u.u6_addr16
#define s6_addr32 in6_u.u6_addr32
#define s6_addr64 in6_u.u6_addr64
};

#define IN6ADDR_ANY_INIT { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
#define IN6ADDR_LOOPBACK_INIT { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }
#endif /* __MINGW32__ */

#ifdef __MINGW32__
typedef unsigned short sa_family_t;

#define __SOCKADDR_COMMON(sa_prefix) sa_family_t sa_prefix##family

/* Ditto, for IPv6.  */
struct sockaddr_in6 {
    __SOCKADDR_COMMON (sin6_);
    u_int16_t sin6_port;		/* Transport layer port # */
    u_int32_t sin6_flowinfo;	/* IPv6 flow information */
    struct in6_addr sin6_addr;	/* IPv6 address */
  };

#define IN6_IS_ADDR_V4MAPPED(a) ((((u_int32_t *)(a))[0] == 0) && (((u_int32_t *)(a))[1] == 0) && (((u_int32_t *)(a))[2] == htonl(0xffff)))

#define IN6_IS_ADDR_MULTICAST(a) (((u_int8_t *)(a))[0] == 0xff)

#define IN6_IS_ADDR_LINKLOCAL(a) ((((u_int32_t *)(a))[0] & htonl(0xffc00000)) == htonl(0xfe800000))

#define IN6_IS_ADDR_LOOPBACK(a) (((u_int32_t *)(a))[0] == 0 && ((u_int32_t *)(a))[1] == 0 && ((u_int32_t *)(a))[2] == 0 && ((u_int32_t *)(a))[3] == htonl(1))
#endif /* __MINGW32__ */

#define ip6_vfc  ip6_ctlun.ip6_un2_vfc
#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow
#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen
#define ip6_nxt  ip6_ctlun.ip6_un1.ip6_un1_nxt
#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim

#define nd_rd_type     nd_rd_hdr.icmp6_type
#define nd_rd_code     nd_rd_hdr.icmp6_code
#define nd_rd_cksum    nd_rd_hdr.icmp6_cksum
#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]

/*
 *	IPV6 extension headers
 */
#define IPPROTO_HOPOPTS  0	/* IPv6 hop-by-hop options	*/
#define IPPROTO_IPV6     41  /* IPv6 header.  */
#define IPPROTO_ROUTING  43	/* IPv6 routing header		*/
#define IPPROTO_FRAGMENT 44	/* IPv6 fragmentation header	*/
#define IPPROTO_ESP      50	/* encapsulating security payload */
#define IPPROTO_AH       51	/* authentication header	*/
#define IPPROTO_ICMPV6   58	/* ICMPv6			*/
#define IPPROTO_NONE     59	/* IPv6 no next header		*/
#define IPPROTO_DSTOPTS  60	/* IPv6 destination options	*/
#define IPPROTO_PIM      103 /* Protocol Independent Multicast.  */

#define IPV6_RTHDR_TYPE_0 0

/* Option types and related macros */
#define IP6OPT_PAD1         0x00	/* 00 0 00000 */
#define IP6OPT_PADN         0x01	/* 00 0 00001 */
#define IP6OPT_JUMBO        0xC2	/* 11 0 00010 = 194 */
#define IP6OPT_JUMBO_LEN    6
#define IP6OPT_ROUTER_ALERT 0x05	/* 00 0 00101 */

#define IP6OPT_RTALERT_LEN    4
#define IP6OPT_RTALERT_MLD    0	/* Datagram contains an MLD message */
#define IP6OPT_RTALERT_RSVP   1	/* Datagram contains an RSVP message */
#define IP6OPT_RTALERT_ACTNET 2 	/* contains an Active Networks msg */
#define IP6OPT_MINLEN         2

#define IP6OPT_BINDING_UPDATE 0xc6	/* 11 0 00110 */
#define IP6OPT_BINDING_ACK    0x07	/* 00 0 00111 */
#define IP6OPT_BINDING_REQ    0x08	/* 00 0 01000 */
#define IP6OPT_HOME_ADDRESS   0xc9	/* 11 0 01001 */
#define IP6OPT_EID            0x8a	/* 10 0 01010 */

#define IP6OPT_TYPE(o)        ((o) & 0xC0)
#define IP6OPT_TYPE_SKIP      0x00
#define IP6OPT_TYPE_DISCARD   0x40
#define IP6OPT_TYPE_FORCEICMP 0x80
#define IP6OPT_TYPE_ICMP      0xC0

#define IP6OPT_MUTABLE 0x20

#ifdef __MINGW32__
#ifndef EAI_ADDRFAMILY
struct addrinfo {
    int ai_flags;	/* AI_PASSIVE, AI_CANONNAME */
    int ai_family;	/* PF_xxx */
    int ai_socktype;	/* SOCK_xxx */
    int ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
    size_t ai_addrlen;	/* length of ai_addr */
    char *ai_canonname;	/* canonical name for hostname */
    struct sockaddr *ai_addr;	/* binary address */
    struct addrinfo *ai_next;	/* next structure in linked list */
};
#endif
#endif /* __MINGW32__ */
