1 /*
2  * Copyright (c) 1993, 1994, 1997
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that: (1) source code distributions
7  * retain the above copyright notice and this paragraph in its entirety, (2)
8  * distributions including binary code include the above copyright notice and
9  * this paragraph in its entirety in the documentation or other materials
10  * provided with the distribution, and (3) all advertising materials mentioning
11  * features or use of this software display the following acknowledgement:
12  * ``This product includes software developed by the University of California,
13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14  * the University nor the names of its contributors may be used to endorse
15  * or promote products derived from this software without specific prior
16  * written permission.
17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20  */
21 
22 /*
23  * This file contains a collage of declarations for IPv6 from FreeBSD not present in Windows
24  */
25 
26 #include <winsock2.h>
27 
28 #include <ws2tcpip.h>
29 
30 #ifndef __MINGW32__
31 #define	IN_MULTICAST(a)		IN_CLASSD(a)
32 #endif
33 
34 #define	IN_EXPERIMENTAL(a)	((((u_int32_t) (a)) & 0xf0000000) == 0xf0000000)
35 
36 #define	IN_LOOPBACKNET		127
37 
38 #if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)
39 /* IPv6 address */
40 struct in6_addr
41   {
42     union
43       {
44 	u_int8_t		u6_addr8[16];
45 	u_int16_t	u6_addr16[8];
46 	u_int32_t	u6_addr32[4];
47       } in6_u;
48 #define s6_addr			in6_u.u6_addr8
49 #define s6_addr16		in6_u.u6_addr16
50 #define s6_addr32		in6_u.u6_addr32
51 #define s6_addr64		in6_u.u6_addr64
52   };
53 
54 #define IN6ADDR_ANY_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
55 #define IN6ADDR_LOOPBACK_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }
56 #endif /* __MINGW32__ */
57 
58 
59 #if (defined _MSC_VER) || (defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF))
60 typedef unsigned short	sa_family_t;
61 #endif
62 
63 
64 #if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)
65 
66 #define	__SOCKADDR_COMMON(sa_prefix) \
67   sa_family_t sa_prefix##family
68 
69 /* Ditto, for IPv6.  */
70 struct sockaddr_in6
71   {
72     __SOCKADDR_COMMON (sin6_);
73     u_int16_t sin6_port;		/* Transport layer port # */
74     u_int32_t sin6_flowinfo;	/* IPv6 flow information */
75     struct in6_addr sin6_addr;	/* IPv6 address */
76   };
77 
78 #define IN6_IS_ADDR_V4MAPPED(a) \
79 	((((u_int32_t *) (a))[0] == 0) && (((u_int32_t *) (a))[1] == 0) && \
80 	 (((u_int32_t *) (a))[2] == htonl (0xffff)))
81 
82 #define IN6_IS_ADDR_MULTICAST(a) (((u_int8_t *) (a))[0] == 0xff)
83 
84 #define IN6_IS_ADDR_LINKLOCAL(a) \
85 	((((u_int32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000))
86 
87 #define IN6_IS_ADDR_LOOPBACK(a) \
88 	(((u_int32_t *) (a))[0] == 0 && ((u_int32_t *) (a))[1] == 0 && \
89 	 ((u_int32_t *) (a))[2] == 0 && ((u_int32_t *) (a))[3] == htonl (1))
90 #endif /* __MINGW32__ */
91 
92 #define ip6_vfc   ip6_ctlun.ip6_un2_vfc
93 #define ip6_flow  ip6_ctlun.ip6_un1.ip6_un1_flow
94 #define ip6_plen  ip6_ctlun.ip6_un1.ip6_un1_plen
95 #define ip6_nxt   ip6_ctlun.ip6_un1.ip6_un1_nxt
96 #define ip6_hlim  ip6_ctlun.ip6_un1.ip6_un1_hlim
97 #define ip6_hops  ip6_ctlun.ip6_un1.ip6_un1_hlim
98 
99 #define nd_rd_type               nd_rd_hdr.icmp6_type
100 #define nd_rd_code               nd_rd_hdr.icmp6_code
101 #define nd_rd_cksum              nd_rd_hdr.icmp6_cksum
102 #define nd_rd_reserved           nd_rd_hdr.icmp6_data32[0]
103 
104 /*
105  *	IPV6 extension headers
106  */
107 #define IPPROTO_HOPOPTS		0	/* IPv6 hop-by-hop options	*/
108 #define IPPROTO_IPV6		41  /* IPv6 header.  */
109 #define IPPROTO_ROUTING		43	/* IPv6 routing header		*/
110 #define IPPROTO_FRAGMENT	44	/* IPv6 fragmentation header	*/
111 #define IPPROTO_ESP		50	/* encapsulating security payload */
112 #define IPPROTO_AH		51	/* authentication header	*/
113 #define IPPROTO_ICMPV6		58	/* ICMPv6			*/
114 #define IPPROTO_NONE		59	/* IPv6 no next header		*/
115 #define IPPROTO_DSTOPTS		60	/* IPv6 destination options	*/
116 #define IPPROTO_PIM			103 /* Protocol Independent Multicast.  */
117 
118 #define	 IPV6_RTHDR_TYPE_0 0
119 
120 /* Option types and related macros */
121 #define IP6OPT_PAD1		0x00	/* 00 0 00000 */
122 #define IP6OPT_PADN		0x01	/* 00 0 00001 */
123 #define IP6OPT_JUMBO		0xC2	/* 11 0 00010 = 194 */
124 #define IP6OPT_JUMBO_LEN	6
125 #define IP6OPT_ROUTER_ALERT	0x05	/* 00 0 00101 */
126 
127 #define IP6OPT_RTALERT_LEN	4
128 #define IP6OPT_RTALERT_MLD	0	/* Datagram contains an MLD message */
129 #define IP6OPT_RTALERT_RSVP	1	/* Datagram contains an RSVP message */
130 #define IP6OPT_RTALERT_ACTNET	2 	/* contains an Active Networks msg */
131 #define IP6OPT_MINLEN		2
132 
133 #define IP6OPT_BINDING_UPDATE	0xc6	/* 11 0 00110 */
134 #define IP6OPT_BINDING_ACK	0x07	/* 00 0 00111 */
135 #define IP6OPT_BINDING_REQ	0x08	/* 00 0 01000 */
136 #define IP6OPT_HOME_ADDRESS	0xc9	/* 11 0 01001 */
137 #define IP6OPT_EID		0x8a	/* 10 0 01010 */
138 
139 #define IP6OPT_TYPE(o)		((o) & 0xC0)
140 #define IP6OPT_TYPE_SKIP	0x00
141 #define IP6OPT_TYPE_DISCARD	0x40
142 #define IP6OPT_TYPE_FORCEICMP	0x80
143 #define IP6OPT_TYPE_ICMP	0xC0
144 
145 #define IP6OPT_MUTABLE		0x20
146 
147 
148 #if defined(__MINGW32__) && defined(DEFINE_ADDITIONAL_IPV6_STUFF)
149 #ifndef EAI_ADDRFAMILY
150 struct addrinfo {
151 	int	ai_flags;	/* AI_PASSIVE, AI_CANONNAME */
152 	int	ai_family;	/* PF_xxx */
153 	int	ai_socktype;	/* SOCK_xxx */
154 	int	ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
155 	size_t	ai_addrlen;	/* length of ai_addr */
156 	char	*ai_canonname;	/* canonical name for hostname */
157 	struct sockaddr *ai_addr;	/* binary address */
158 	struct addrinfo *ai_next;	/* next structure in linked list */
159 };
160 #endif
161 #endif /* __MINGW32__ */
162