1/* 2 * Copyright (c) 2000-2009 Apple Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23/* 24 * ++Copyright++ 1980, 1983, 1988, 1993 25 * - 26 * Copyright (c) 1980, 1983, 1988, 1993 27 * The Regents of the University of California. All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 1. Redistributions of source code must retain the above copyright 33 * notice, this list of conditions and the following disclaimer. 34 * 2. Redistributions in binary form must reproduce the above copyright 35 * notice, this list of conditions and the following disclaimer in the 36 * documentation and/or other materials provided with the distribution. 37 * 3. All advertising materials mentioning features or use of this software 38 * must display the following acknowledgement: 39 * This product includes software developed by the University of 40 * California, Berkeley and its contributors. 41 * 4. Neither the name of the University nor the names of its contributors 42 * may be used to endorse or promote products derived from this software 43 * without specific prior written permission. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 * 57 * - 58 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 59 * 60 * Permission to use, copy, modify, and distribute this software for any 61 * purpose with or without fee is hereby granted, provided that the above 62 * copyright notice and this permission notice appear in all copies, and that 63 * the name of Digital Equipment Corporation not be used in advertising or 64 * publicity pertaining to distribution of the document or software without 65 * specific, written prior permission. 66 * 67 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 68 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 69 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 70 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 71 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 72 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 73 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 74 * SOFTWARE. 75 * - 76 * --Copyright-- 77 */ 78 79/* 80 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 81 */ 82 83#ifndef _NETDB_H_ 84#define _NETDB_H_ 85 86#include <_types.h> 87#include <sys/_types/_size_t.h> 88#include <sys/_types/_socklen_t.h> 89 90#include <stdint.h> 91#include <netinet/in.h> /* IPPORT_RESERVED */ 92 93#ifndef _PATH_HEQUIV 94# define _PATH_HEQUIV "/etc/hosts.equiv" 95#endif 96#define _PATH_HOSTS "/etc/hosts" 97#define _PATH_NETWORKS "/etc/networks" 98#define _PATH_PROTOCOLS "/etc/protocols" 99#define _PATH_SERVICES "/etc/services" 100 101extern int h_errno; 102 103#ifndef IPPORT_RESERVED 104#define IPPORT_RESERVED __DARWIN_IPPORT_RESERVED 105#endif 106 107/* 108 * Structures returned by network data base library. All addresses are 109 * supplied in host order, and returned in network order (suitable for 110 * use in system calls). 111 */ 112struct hostent { 113 char *h_name; /* official name of host */ 114 char **h_aliases; /* alias list */ 115 int h_addrtype; /* host address type */ 116 int h_length; /* length of address */ 117 char **h_addr_list; /* list of addresses from name server */ 118#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 119#define h_addr h_addr_list[0] /* address, for backward compatibility */ 120#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 121}; 122 123/* 124 * Assumption here is that a network number 125 * fits in an unsigned long -- probably a poor one. 126 */ 127struct netent { 128 char *n_name; /* official name of net */ 129 char **n_aliases; /* alias list */ 130 int n_addrtype; /* net address type */ 131 uint32_t n_net; /* network # */ 132}; 133 134struct servent { 135 char *s_name; /* official service name */ 136 char **s_aliases; /* alias list */ 137 int s_port; /* port # */ 138 char *s_proto; /* protocol to use */ 139}; 140 141struct protoent { 142 char *p_name; /* official protocol name */ 143 char **p_aliases; /* alias list */ 144 int p_proto; /* protocol # */ 145}; 146 147struct addrinfo { 148 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 149 int ai_family; /* PF_xxx */ 150 int ai_socktype; /* SOCK_xxx */ 151 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 152 socklen_t ai_addrlen; /* length of ai_addr */ 153 char *ai_canonname; /* canonical name for hostname */ 154 struct sockaddr *ai_addr; /* binary address */ 155 struct addrinfo *ai_next; /* next structure in linked list */ 156}; 157 158#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 159struct rpcent { 160 char *r_name; /* name of server for this rpc program */ 161 char **r_aliases; /* alias list */ 162 int r_number; /* rpc program number */ 163}; 164#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 165 166/* 167 * Error return codes from gethostbyname() and gethostbyaddr() 168 * (left in h_errno). 169 */ 170#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 171#define NETDB_INTERNAL -1 /* see errno */ 172#define NETDB_SUCCESS 0 /* no problem */ 173#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 174#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 175#define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 176#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 177#define NO_DATA 4 /* Valid name, no data record of requested type */ 178#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 179#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 180#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 181/* 182 * Error return codes from getaddrinfo() 183 */ 184#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 185#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 186#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 187#define EAI_AGAIN 2 /* temporary failure in name resolution */ 188#define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 189#define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 190#define EAI_FAMILY 5 /* ai_family not supported */ 191#define EAI_MEMORY 6 /* memory allocation failure */ 192#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 193#define EAI_NODATA 7 /* no address associated with hostname */ 194#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 195#define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 196#define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 197#define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 198#define EAI_SYSTEM 11 /* system error returned in errno */ 199#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 200#define EAI_BADHINTS 12 /* invalid value for hints */ 201#define EAI_PROTOCOL 13 /* resolved protocol is unknown */ 202#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 203#define EAI_OVERFLOW 14 /* argument buffer overflow */ 204#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 205#define EAI_MAX 15 206#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 207 208/* 209 * Flag values for getaddrinfo() 210 */ 211#define AI_PASSIVE 0x00000001 /* get address to use bind() */ 212#define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 213#define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 214#define AI_NUMERICSERV 0x00001000 /* prevent service name resolution */ 215/* valid flags for addrinfo (not a standard def, apps should not use it) */ 216#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 217#define AI_MASK \ 218 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 219 AI_ADDRCONFIG) 220 221#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 222#define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 223#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 224#define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 225#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 226#define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 227#define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 228/* special recommended flags for getipnodebyname */ 229#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 230#define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 231#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 232 233/* 234 * Constants for getnameinfo() 235 */ 236#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 237#define NI_MAXHOST 1025 238#define NI_MAXSERV 32 239#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 240/* 241 * Flag values for getnameinfo() 242 */ 243#define NI_NOFQDN 0x00000001 244#define NI_NUMERICHOST 0x00000002 245#define NI_NAMEREQD 0x00000004 246#define NI_NUMERICSERV 0x00000008 247#define NI_DGRAM 0x00000010 248#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 249#define NI_WITHSCOPEID 0x00000020 250 251/* 252 * Scope delimit character 253 */ 254#define SCOPE_DELIMITER '%' 255#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 256 257__BEGIN_DECLS 258 259void endhostent(void); 260void endnetent(void); 261void endprotoent(void); 262void endservent(void); 263 264void freeaddrinfo(struct addrinfo *); 265const char *gai_strerror(int); 266int getaddrinfo(const char * __restrict, const char * __restrict, 267 const struct addrinfo * __restrict, 268 struct addrinfo ** __restrict); 269struct hostent *gethostbyaddr(const void *, socklen_t, int); 270struct hostent *gethostbyname(const char *); 271struct hostent *gethostent(void); 272int getnameinfo(const struct sockaddr * __restrict, socklen_t, 273 char * __restrict, socklen_t, char * __restrict, 274 socklen_t, int); 275struct netent *getnetbyaddr(uint32_t, int); 276struct netent *getnetbyname(const char *); 277struct netent *getnetent(void); 278struct protoent *getprotobyname(const char *); 279struct protoent *getprotobynumber(int); 280struct protoent *getprotoent(void); 281struct servent *getservbyname(const char *, const char *); 282struct servent *getservbyport(int, const char *); 283struct servent *getservent(void); 284void sethostent(int); 285/* void sethostfile(const char *); */ 286void setnetent(int); 287void setprotoent(int); 288void setservent(int); 289 290#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 291void freehostent(struct hostent *); 292struct hostent *gethostbyname2(const char *, int); 293struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 294struct hostent *getipnodebyname(const char *, int, int, int *); 295struct rpcent *getrpcbyname(const char *name); 296#ifdef __LP64__ 297struct rpcent *getrpcbynumber(int number); 298#else 299struct rpcent *getrpcbynumber(long number); 300#endif 301struct rpcent *getrpcent(void); 302void setrpcent(int stayopen); 303void endrpcent(void); 304void herror(const char *); 305const char *hstrerror(int); 306int innetgr(const char *, const char *, const char *, const char *); 307int getnetgrent(char **, char **, char **); 308void endnetgrent(void); 309void setnetgrent(const char *); 310#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 311 312__END_DECLS 313 314#endif /* !_NETDB_H_ */ 315