2 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
30 #ifndef HAVE_GETADDRINFO
33 * Error return codes from getaddrinfo()
35 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
36 #define EAI_AGAIN 2 /* temporary failure in name resolution */
37 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */
38 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
39 #define EAI_FAMILY 5 /* ai_family not supported */
40 #define EAI_MEMORY 6 /* memory allocation failure */
41 #define EAI_NODATA 7 /* no address associated with hostname */
42 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */
43 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */
44 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */
45 #define EAI_SYSTEM 11 /* system error returned in errno */
46 #define EAI_BADHINTS 12
47 #define EAI_PROTOCOL 13
51 * Flag values for getaddrinfo()
53 #define AI_PASSIVE 0x00000001 /* get address to use bind() */
54 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */
55 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
56 /* valid flags for addrinfo */
57 #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)
59 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
60 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
61 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
62 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
63 /* special recommended flags for getipnodebyname */
64 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
67 * Constants for getnameinfo()
69 #define NI_MAXHOST 1025
73 * Flag values for getnameinfo()
75 #define NI_NOFQDN 0x00000001
76 #define NI_NUMERICHOST 0x00000002
77 #define NI_NAMEREQD 0x00000004
78 #define NI_NUMERICSERV 0x00000008
79 #define NI_DGRAM 0x00000010
82 int ai_flags; /* AI_PASSIVE, AI_CANONNAME */
83 int ai_family; /* PF_xxx */
84 int ai_socktype; /* SOCK_xxx */
85 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
86 size_t ai_addrlen; /* length of ai_addr */
87 char *ai_canonname; /* canonical name for hostname */
88 struct sockaddr *ai_addr; /* binary address */
89 struct addrinfo *ai_next; /* next structure in linked list */
92 struct sockaddr_storage {
98 extern void freehostent(struct hostent *);
99 extern char *gai_strerror(int);