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