1/*
2 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the project nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30/**
31 * @file addrinfo.h
32 *
33 * Replacement getaddrinfo() for machines that don't have it.  The new
34 * getaddrinfo()/getnameinfo() interface is implemented on top of the
35 * traditional resolver calls.
36 **/
37
38#ifndef HAVE_GETADDRINFO
39
40#ifndef EAI_ADDRFAMILY
41/*
42 * Error return codes from getaddrinfo()
43 */
44#define	EAI_ADDRFAMILY	 1	/* address family for hostname not supported */
45#define	EAI_AGAIN	 2	/* temporary failure in name resolution */
46#define	EAI_BADFLAGS	 3	/* invalid value for ai_flags */
47#define	EAI_FAIL	 4	/* non-recoverable failure in name resolution */
48#define	EAI_FAMILY	 5	/* ai_family not supported */
49#define	EAI_MEMORY	 6	/* memory allocation failure */
50#define	EAI_NODATA	 7	/* no address associated with hostname */
51#define	EAI_NONAME	 8	/* hostname nor servname provided, or not known */
52#define	EAI_SERVICE	 9	/* servname not supported for ai_socktype */
53#define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
54#define	EAI_SYSTEM	11	/* system error returned in errno */
55#define EAI_BADHINTS	12
56#define EAI_PROTOCOL	13
57#define EAI_MAX		14
58#endif /* ndef EAI_ADDRFAMILY */
59
60/*
61 * Flag values for getaddrinfo()
62 */
63
64#ifndef AI_PASSIVE
65
66#define	AI_PASSIVE	0x00000001 /* get address to use bind() */
67#define	AI_CANONNAME	0x00000002 /* fill ai_canonname */
68#define	AI_NUMERICHOST	0x00000004 /* prevent name resolution */
69/* valid flags for addrinfo */
70#define	AI_MASK		(AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)
71
72#define	AI_ALL		0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
73#define	AI_V4MAPPED_CFG	0x00000200 /* accept IPv4-mapped if kernel supports */
74#define	AI_ADDRCONFIG	0x00000400 /* only if any address is assigned */
75#define	AI_V4MAPPED	0x00000800 /* accept IPv4-mapped IPv6 address */
76/* special recommended flags for getipnodebyname */
77#define	AI_DEFAULT	(AI_V4MAPPED_CFG | AI_ADDRCONFIG)
78
79/*
80 * Constants for getnameinfo()
81 */
82#define	NI_MAXHOST	1025
83#define	NI_MAXSERV	32
84
85/*
86 * Flag values for getnameinfo()
87 */
88#define	NI_NOFQDN	0x00000001
89#define	NI_NUMERICHOST	0x00000002
90#define	NI_NAMEREQD	0x00000004
91#define	NI_NUMERICSERV	0x00000008
92#define	NI_DGRAM	0x00000010
93
94struct addrinfo {
95	int	ai_flags;	/* AI_PASSIVE, AI_CANONNAME */
96	int	ai_family;	/* PF_xxx */
97	int	ai_socktype;	/* SOCK_xxx */
98	int	ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
99	size_t	ai_addrlen;	/* length of ai_addr */
100	char	*ai_canonname;	/* canonical name for hostname */
101	struct sockaddr *ai_addr;	/* binary address */
102	struct addrinfo *ai_next;	/* next structure in linked list */
103};
104
105extern void freehostent(struct hostent *);
106extern char *gai_strerror(int);
107#endif /* AI_PASSIVE */
108#endif /* HAVE_GETADDRINFO */
109
110#ifndef HAVE_SOCKADDR_STORAGE
111struct sockaddr_storage {
112	unsigned long	align;
113	unsigned char	fill[128 - sizeof (unsigned long)];
114};
115#endif
116