1/* $NetBSD: netdb.h,v 1.64 2010/05/05 17:12:29 christos Exp $ */ 2 3/* 4 * ++Copyright++ 1980, 1983, 1988, 1993 5 * - 6 * Copyright (c) 1980, 1983, 1988, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * - 33 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 34 * 35 * Permission to use, copy, modify, and distribute this software for any 36 * purpose with or without fee is hereby granted, provided that the above 37 * copyright notice and this permission notice appear in all copies, and that 38 * the name of Digital Equipment Corporation not be used in advertising or 39 * publicity pertaining to distribution of the document or software without 40 * specific, written prior permission. 41 * 42 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 43 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 44 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 45 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 46 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 47 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 48 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 49 * SOFTWARE. 50 * - 51 * Portions Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 52 * All rights reserved. 53 * 54 * Redistribution and use in source and binary forms, with or without 55 * modification, are permitted provided that the following conditions 56 * are met: 57 * 1. Redistributions of source code must retain the above copyright 58 * notice, this list of conditions and the following disclaimer. 59 * 2. Redistributions in binary form must reproduce the above copyright 60 * notice, this list of conditions and the following disclaimer in the 61 * documentation and/or other materials provided with the distribution. 62 * 3. All advertising materials mentioning features or use of this software 63 * must display the following acknowledgement: 64 * This product includes software developed by WIDE Project and 65 * its contributors. 66 * 4. Neither the name of the project nor the names of its contributors 67 * may be used to endorse or promote products derived from this software 68 * without specific prior written permission. 69 * 70 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 71 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 72 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 73 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 74 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 75 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 76 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 77 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 78 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 79 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 80 * SUCH DAMAGE. 81 * - 82 * --Copyright-- 83 */ 84 85/* 86 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 87 * Id: netdb.h,v 1.22 2008/02/28 05:34:17 marka Exp 88 */ 89 90#ifndef _NETDB_H_ 91#define _NETDB_H_ 92 93#include <machine/ansi.h> 94#include <machine/endian_machdep.h> 95#include <sys/ansi.h> 96#include <sys/cdefs.h> 97#include <sys/featuretest.h> 98#include <inttypes.h> 99/* 100 * Data types 101 */ 102#ifndef socklen_t 103typedef __socklen_t socklen_t; 104#define socklen_t __socklen_t 105#endif 106 107#ifdef _BSD_SIZE_T_ 108typedef _BSD_SIZE_T_ size_t; 109#undef _BSD_SIZE_T_ 110#endif 111 112#if defined(_NETBSD_SOURCE) 113#ifndef _PATH_HEQUIV 114#define _PATH_HEQUIV "/etc/hosts.equiv" 115#endif 116#ifndef _PATH_HOSTS 117#define _PATH_HOSTS "/etc/hosts" 118#endif 119#ifndef _PATH_NETWORKS 120#define _PATH_NETWORKS "/etc/networks" 121#endif 122#ifndef _PATH_PROTOCOLS 123#define _PATH_PROTOCOLS "/etc/protocols" 124#endif 125#ifndef _PATH_SERVICES 126#define _PATH_SERVICES "/etc/services" 127#endif 128#ifndef _PATH_SERVICES_CDB 129#define _PATH_SERVICES_CDB "/var/db/services.cdb" 130#endif 131#ifndef _PATH_SERVICES_DB 132#define _PATH_SERVICES_DB "/var/db/services.db" 133#endif 134#endif 135 136__BEGIN_DECLS 137extern int h_errno; 138extern int * __h_errno(void); 139#ifdef _REENTRANT 140#define h_errno (*__h_errno()) 141#endif 142__END_DECLS 143 144/*% 145 * Structures returned by network data base library. All addresses are 146 * supplied in host order, and returned in network order (suitable for 147 * use in system calls). 148 */ 149struct hostent { 150 char *h_name; /*%< official name of host */ 151 char **h_aliases; /*%< alias list */ 152 int h_addrtype; /*%< host address type */ 153 int h_length; /*%< length of address */ 154 char **h_addr_list; /*%< list of addresses from name server */ 155#define h_addr h_addr_list[0] /*%< address, for backward compatiblity */ 156}; 157 158/*% 159 * Assumption here is that a network number 160 * fits in an unsigned long -- probably a poor one. 161 */ 162struct netent { 163 char *n_name; /*%< official name of net */ 164 char **n_aliases; /*%< alias list */ 165 int n_addrtype; /*%< net address type */ 166#if (defined(__sparc__) && defined(_LP64)) || \ 167 (defined(__sh__) && defined(_LP64) && (_BYTE_ORDER == _BIG_ENDIAN)) 168 int __n_pad0; /* ABI compatibility */ 169#endif 170 uint32_t n_net; /*%< network # */ 171#if defined(__alpha__) || (defined(__i386__) && defined(_LP64)) || \ 172 (defined(__sh__) && defined(_LP64) && (_BYTE_ORDER == _LITTLE_ENDIAN)) 173 int __n_pad0; /* ABI compatibility */ 174#endif 175}; 176 177struct servent { 178 char *s_name; /*%< official service name */ 179 char **s_aliases; /*%< alias list */ 180 int s_port; /*%< port # */ 181 char *s_proto; /*%< protocol to use */ 182}; 183 184struct protoent { 185 char *p_name; /*%< official protocol name */ 186 char **p_aliases; /*%< alias list */ 187 int p_proto; /*%< protocol # */ 188}; 189 190/* 191 * Note: ai_addrlen used to be a size_t, per RFC 2553. 192 * In XNS5.2, and subsequently in POSIX-2001 and 193 * draft-ietf-ipngwg-rfc2553bis-02.txt it was changed to a socklen_t. 194 * To accommodate for this while preserving binary compatibility with the 195 * old interface, we prepend or append 32 bits of padding, depending on 196 * the (LP64) architecture's endianness. 197 * 198 * This should be deleted the next time the libc major number is 199 * incremented. 200 */ 201#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 202 defined(_NETBSD_SOURCE) 203struct addrinfo { 204 int ai_flags; /*%< AI_PASSIVE, AI_CANONNAME */ 205 int ai_family; /*%< PF_xxx */ 206 int ai_socktype; /*%< SOCK_xxx */ 207 int ai_protocol; /*%< 0 or IPPROTO_xxx for IPv4 and IPv6 */ 208#if defined(__sparc__) && defined(_LP64) 209 int __ai_pad0; /* ABI compatibility */ 210#endif 211 socklen_t ai_addrlen; /*%< length of ai_addr */ 212#if defined(__alpha__) || (defined(__i386__) && defined(_LP64)) 213 int __ai_pad0; /* ABI compatibility */ 214#endif 215 char *ai_canonname; /*%< canonical name for hostname */ 216 struct sockaddr *ai_addr; /*%< binary address */ 217 struct addrinfo *ai_next; /*%< next structure in linked list */ 218}; 219#endif 220 221/*% 222 * Error return codes from gethostbyname() and gethostbyaddr() 223 * (left in extern int h_errno). 224 */ 225 226#if defined(_NETBSD_SOURCE) 227#define NETDB_INTERNAL -1 /*%< see errno */ 228#define NETDB_SUCCESS 0 /*%< no problem */ 229#endif 230#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 231#define HOST_NOT_FOUND 1 /*%< Authoritative Answer Host not found */ 232#define TRY_AGAIN 2 /*%< Non-Authoritive Host not found, or SERVERFAIL */ 233#define NO_RECOVERY 3 /*%< Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 234#define NO_DATA 4 /*%< Valid name, no data record of requested type */ 235#if defined(_NETBSD_SOURCE) 236#define NO_ADDRESS NO_DATA /*%< no address, look for MX record */ 237#endif 238 239/* 240 * Error return codes from getaddrinfo() 241 */ 242#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 243 defined(_NETBSD_SOURCE) 244#define EAI_ADDRFAMILY 1 /*%< address family for hostname not supported */ 245#define EAI_AGAIN 2 /*%< temporary failure in name resolution */ 246#define EAI_BADFLAGS 3 /*%< invalid value for ai_flags */ 247#define EAI_FAIL 4 /*%< non-recoverable failure in name resolution */ 248#define EAI_FAMILY 5 /*%< ai_family not supported */ 249#define EAI_MEMORY 6 /*%< memory allocation failure */ 250#define EAI_NODATA 7 /*%< no address associated with hostname */ 251#define EAI_NONAME 8 /*%< hostname nor servname provided, or not known */ 252#define EAI_SERVICE 9 /*%< servname not supported for ai_socktype */ 253#define EAI_SOCKTYPE 10 /*%< ai_socktype not supported */ 254#define EAI_SYSTEM 11 /*%< system error returned in errno */ 255#define EAI_BADHINTS 12 /* invalid value for hints */ 256#define EAI_PROTOCOL 13 /* resolved protocol is unknown */ 257#define EAI_OVERFLOW 14 /* argument buffer overflow */ 258#define EAI_MAX 15 259#endif /* _POSIX_C_SOURCE >= 200112 || _XOPEN_SOURCE >= 520 || _NETBSD_SOURCE */ 260 261/*% 262 * Flag values for getaddrinfo() 263 */ 264#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 265 defined(_NETBSD_SOURCE) 266#define AI_PASSIVE 0x00000001 /* get address to use bind() */ 267#define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 268#define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 269#define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ 270/* valid flags for addrinfo (not a standard def, apps should not use it) */ 271#define AI_MASK \ 272 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 273 AI_ADDRCONFIG) 274#define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 275#endif 276 277#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 278 defined(_NETBSD_SOURCE) 279/*% 280 * Constants for getnameinfo() 281 */ 282#if defined(_NETBSD_SOURCE) 283#define NI_MAXHOST 1025 284#define NI_MAXSERV 32 285#endif 286 287/*% 288 * Flag values for getnameinfo() 289 */ 290#define NI_NOFQDN 0x00000001 291#define NI_NUMERICHOST 0x00000002 292#define NI_NAMEREQD 0x00000004 293#define NI_NUMERICSERV 0x00000008 294#define NI_DGRAM 0x00000010 295#define NI_WITHSCOPEID 0x00000020 296#define NI_NUMERICSCOPE 0x00000040 297 298/*% 299 * Scope delimit character 300 */ 301#if defined(_NETBSD_SOURCE) 302#define SCOPE_DELIMITER '%' 303#endif 304#endif /* (_POSIX_C_SOURCE - 0) >= 200112L || ... */ 305 306__BEGIN_DECLS 307void endhostent(void); 308void endnetent(void); 309void endprotoent(void); 310void endservent(void); 311#if (_XOPEN_SOURCE - 0) >= 520 && (_XOPEN_SOURCE - 0) < 600 || \ 312 defined(_NETBSD_SOURCE) 313#if 0 /* we do not ship this */ 314void freehostent(struct hostent *); 315#endif 316#endif 317struct hostent *gethostbyaddr(const char *, socklen_t, int); 318struct hostent *gethostbyname(const char *); 319#if defined(_NETBSD_SOURCE) 320struct hostent *gethostbyname2(const char *, int); 321#endif 322struct hostent *gethostent(void); 323struct netent *getnetbyaddr(uint32_t, int); 324struct netent *getnetbyname(const char *); 325struct netent *getnetent(void); 326struct protoent *getprotobyname(const char *); 327struct protoent *getprotobynumber(int); 328struct protoent *getprotoent(void); 329struct servent *getservbyname(const char *, const char *); 330struct servent *getservbyport(int, const char *); 331struct servent *getservent(void); 332#if defined(_NETBSD_SOURCE) 333void herror(const char *); 334const char *hstrerror(int); 335#endif 336void sethostent(int); 337#if defined(_NETBSD_SOURCE) 338/* void sethostfile(const char *); */ 339#endif 340void setnetent(int); 341void setprotoent(int); 342void setservent(int); 343#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 344 defined(_NETBSD_SOURCE) 345int getaddrinfo(const char * __restrict, const char * __restrict, 346 const struct addrinfo * __restrict, 347 struct addrinfo ** __restrict); 348int getnameinfo(const struct sockaddr * __restrict, socklen_t, 349 char * __restrict, socklen_t, 350 char * __restrict, socklen_t, int); 351struct addrinfo *allocaddrinfo(socklen_t); 352void freeaddrinfo(struct addrinfo *); 353const char *gai_strerror(int); 354#endif 355__END_DECLS 356 357#endif /* !_NETDB_H_ */ 358