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 /* $Id: addrinfo.h,v 1.4 2002-06-11 17:13:36 itojun Exp $ */ 31 32 #ifndef HAVE_ADDRINFO 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 /* internal error */ 53 #define NETDB_INTERNAL -1 /* see errno */ 54 55 /* 56 * Flag values for getaddrinfo() 57 */ 58 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 59 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 60 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */ 61 /* valid flags for addrinfo */ 62 #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST) 63 64 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 65 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 66 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 67 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 68 /* special recommended flags for getipnodebyname */ 69 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 70 71 struct addrinfo { 72 int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ 73 int ai_family; /* PF_xxx */ 74 int ai_socktype; /* SOCK_xxx */ 75 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 76 size_t ai_addrlen; /* length of ai_addr */ 77 char *ai_canonname; /* canonical name for hostname */ 78 struct sockaddr *ai_addr; /* binary address */ 79 struct addrinfo *ai_next; /* next structure in linked list */ 80 }; 81 82 extern void freeaddrinfo (struct addrinfo *); 83 extern void freehostent (struct hostent *); 84 extern int getnameinfo (const struct sockaddr *, size_t, char *, 85 size_t, char *, size_t, int); 86 extern struct hostent *getipnodebyaddr (const void *, size_t, int, int *); 87 extern struct hostent *getipnodebyname (const char *, int, int, int *); 88 extern int inet_pton (int, const char *, void *); 89 extern const char *inet_ntop (int, const void *, char *, size_t); 90 #endif /* HAVE_ADDRINFO */ 91 92 /* 93 * Constants for getnameinfo() 94 */ 95 #ifndef NI_MAXHOST 96 #define NI_MAXHOST 1025 97 #endif 98 #ifndef NI_MAXSERV 99 #define NI_MAXSERV 32 100 #endif 101 102 /* 103 * Flag values for getnameinfo() 104 */ 105 #ifndef NI_NOFQDN 106 #define NI_NOFQDN 0x00000001 107 #endif 108 #ifndef NI_NUMERICHOST 109 #define NI_NUMERICHOST 0x00000002 110 #endif 111 #ifndef NI_NAMEREQD 112 #define NI_NAMEREQD 0x00000004 113 #endif 114 #ifndef NI_NUMERICSERV 115 #define NI_NUMERICSERV 0x00000008 116 #endif 117 #ifndef NI_DGRAM 118 #define NI_DGRAM 0x00000010 119 #endif 120