1/*	$NetBSD: addrinfo.h,v 1.2 2011/02/16 03:47:00 christos Exp $	*/
2
3/*
4 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#ifndef HAVE_GETADDRINFO
33
34/*
35 * Error return codes from getaddrinfo()
36 */
37#define	EAI_ADDRFAMILY	 1	/* address family for hostname not supported */
38#define	EAI_AGAIN	 2	/* temporary failure in name resolution */
39#define	EAI_BADFLAGS	 3	/* invalid value for ai_flags */
40#define	EAI_FAIL	 4	/* non-recoverable failure in name resolution */
41#define	EAI_FAMILY	 5	/* ai_family not supported */
42#define	EAI_MEMORY	 6	/* memory allocation failure */
43#define	EAI_NODATA	 7	/* no address associated with hostname */
44#define	EAI_NONAME	 8	/* hostname nor servname provided, or not known */
45#define	EAI_SERVICE	 9	/* servname not supported for ai_socktype */
46#define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
47#define	EAI_SYSTEM	11	/* system error returned in errno */
48#define EAI_BADHINTS	12
49#define EAI_PROTOCOL	13
50#define EAI_MAX		14
51
52/*
53 * Flag values for getaddrinfo()
54 */
55#define	AI_PASSIVE	0x00000001 /* get address to use bind() */
56#define	AI_CANONNAME	0x00000002 /* fill ai_canonname */
57#define	AI_NUMERICHOST	0x00000004 /* prevent name resolution */
58/* valid flags for addrinfo */
59#define	AI_MASK		(AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)
60
61#define	AI_ALL		0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
62#define	AI_V4MAPPED_CFG	0x00000200 /* accept IPv4-mapped if kernel supports */
63#define	AI_ADDRCONFIG	0x00000400 /* only if any address is assigned */
64#define	AI_V4MAPPED	0x00000800 /* accept IPv4-mapped IPv6 address */
65/* special recommended flags for getipnodebyname */
66#define	AI_DEFAULT	(AI_V4MAPPED_CFG | AI_ADDRCONFIG)
67
68/*
69 * Constants for getnameinfo()
70 */
71#define	NI_MAXHOST	1025
72#define	NI_MAXSERV	32
73
74/*
75 * Flag values for getnameinfo()
76 */
77#define	NI_NOFQDN	0x00000001
78#define	NI_NUMERICHOST	0x00000002
79#define	NI_NAMEREQD	0x00000004
80#define	NI_NUMERICSERV	0x00000008
81#define	NI_DGRAM	0x00000010
82
83struct addrinfo {
84	int	ai_flags;	/* AI_PASSIVE, AI_CANONNAME */
85	int	ai_family;	/* PF_xxx */
86	int	ai_socktype;	/* SOCK_xxx */
87	int	ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
88	size_t	ai_addrlen;	/* length of ai_addr */
89	char	*ai_canonname;	/* canonical name for hostname */
90	struct sockaddr *ai_addr;	/* binary address */
91	struct addrinfo *ai_next;	/* next structure in linked list */
92};
93
94struct sockaddr_storage {
95	u_char __ss_len;
96	u_char __ss_family;
97	u_char fill[126];
98};
99
100extern void freehostent(struct hostent *);
101extern char *gai_strerror(int);
102#endif
103