netdb.h revision 1.34
1 /* $NetBSD: netdb.h,v 1.34 2004/03/20 18:22:22 christos Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 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 /*- 33 * Copyright (c) 1980, 1983, 1988, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 61 * Id: netdb.h,v 4.9.1.2 1993/05/17 09:59:01 vixie Exp 62 * - 63 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 64 * 65 * Permission to use, copy, modify, and distribute this software for any 66 * purpose with or without fee is hereby granted, provided that the above 67 * copyright notice and this permission notice appear in all copies, and that 68 * the name of Digital Equipment Corporation not be used in advertising or 69 * publicity pertaining to distribution of the document or software without 70 * specific, written prior permission. 71 * 72 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 73 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 74 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 75 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 76 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 77 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 78 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 79 * SOFTWARE. 80 * - 81 * --Copyright-- 82 */ 83 84 #ifndef _NETDB_H_ 85 #define _NETDB_H_ 86 87 #include <machine/ansi.h> 88 #include <sys/ansi.h> 89 #include <sys/cdefs.h> 90 #include <sys/featuretest.h> 91 #include <inttypes.h> 92 93 /* 94 * Data types 95 */ 96 #ifndef socklen_t 97 typedef __socklen_t socklen_t; 98 #define socklen_t __socklen_t 99 #endif 100 101 #ifdef _BSD_SIZE_T_ 102 typedef _BSD_SIZE_T_ size_t; 103 #undef _BSD_SIZE_T_ 104 #endif 105 106 #if defined(_NETBSD_SOURCE) 107 #define _PATH_HEQUIV "/etc/hosts.equiv" 108 #define _PATH_HOSTS "/etc/hosts" 109 #define _PATH_NETWORKS "/etc/networks" 110 #define _PATH_PROTOCOLS "/etc/protocols" 111 #define _PATH_SERVICES "/etc/services" 112 #endif 113 114 extern int h_errno; 115 116 /* 117 * Structures returned by network data base library. All addresses are 118 * supplied in host order, and returned in network order (suitable for 119 * use in system calls). 120 */ 121 struct hostent { 122 char *h_name; /* official name of host */ 123 char **h_aliases; /* alias list */ 124 int h_addrtype; /* host address type */ 125 int h_length; /* length of address */ 126 char **h_addr_list; /* list of addresses from name server */ 127 #define h_addr h_addr_list[0] /* address, for backward compatibility */ 128 }; 129 130 /* 131 * Assumption here is that a network number 132 * fits in an unsigned long -- probably a poor one. 133 */ 134 struct netent { 135 char *n_name; /* official name of net */ 136 char **n_aliases; /* alias list */ 137 int n_addrtype; /* net address type */ 138 unsigned long n_net; /* network # XXX */ 139 }; 140 141 struct servent { 142 char *s_name; /* official service name */ 143 char **s_aliases; /* alias list */ 144 int s_port; /* port # */ 145 char *s_proto; /* protocol to use */ 146 }; 147 148 struct protoent { 149 char *p_name; /* official protocol name */ 150 char **p_aliases; /* alias list */ 151 int p_proto; /* protocol # */ 152 }; 153 154 /* 155 * Note: ai_addrlen used to be a size_t, per RFC 2553. 156 * In XNS5.2, and subsequently in POSIX-2001 and 157 * draft-ietf-ipngwg-rfc2553bis-02.txt it was changed to a socklen_t. 158 * To accomodate for this while preserving binary compatibility with the 159 * old interface, we prepend or append 32 bits of padding, depending on 160 * the (LP64) architecture's endianness. 161 * 162 * This should be deleted the next time the libc major number is 163 * incremented. 164 */ 165 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 166 defined(_NETBSD_SOURCE) 167 struct addrinfo { 168 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 169 int ai_family; /* PF_xxx */ 170 int ai_socktype; /* SOCK_xxx */ 171 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 172 #if defined(__sparc64__) 173 int __ai_pad0; 174 #endif 175 socklen_t ai_addrlen; /* length of ai_addr */ 176 #if defined(__alpha__) || (defined(__i386__) && defined(_LP64)) 177 int __ai_pad0; 178 #endif 179 char *ai_canonname; /* canonical name for hostname */ 180 struct sockaddr *ai_addr; /* binary address */ 181 struct addrinfo *ai_next; /* next structure in linked list */ 182 }; 183 #endif 184 185 /* 186 * Error return codes from gethostbyname() and gethostbyaddr() 187 * (left in extern int h_errno). 188 */ 189 190 #if defined(_NETBSD_SOURCE) 191 #define NETDB_INTERNAL -1 /* see errno */ 192 #define NETDB_SUCCESS 0 /* no problem */ 193 #endif 194 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 195 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 196 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 197 #define NO_DATA 4 /* Valid name, no data record of requested type */ 198 #if defined(_NETBSD_SOURCE) 199 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 200 #endif 201 202 /* 203 * Error return codes from getaddrinfo() 204 */ 205 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 206 defined(_NETBSD_SOURCE) 207 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 208 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 209 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 210 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 211 #define EAI_FAMILY 5 /* ai_family not supported */ 212 #define EAI_MEMORY 6 /* memory allocation failure */ 213 #define EAI_NODATA 7 /* no address associated with hostname */ 214 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 215 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 216 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 217 #define EAI_SYSTEM 11 /* system error returned in errno */ 218 #define EAI_BADHINTS 12 219 #define EAI_PROTOCOL 13 220 #define EAI_MAX 14 221 #endif /* _POSIX_C_SOURCE >= 200112 || _XOPEN_SOURCE >= 520 || _NETBSD_SOURCE */ 222 223 /* 224 * Flag values for getaddrinfo() 225 */ 226 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 227 defined(_NETBSD_SOURCE) 228 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 229 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 230 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */ 231 /* valid flags for addrinfo */ 232 #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST) 233 #endif 234 235 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 236 defined(_NETBSD_SOURCE) 237 /* 238 * Constants for getnameinfo() 239 */ 240 #if defined(_NETBSD_SOURCE) 241 #define NI_MAXHOST 1025 242 #define NI_MAXSERV 32 243 #endif 244 245 /* 246 * Flag values for getnameinfo() 247 */ 248 #define NI_NOFQDN 0x00000001 249 #define NI_NUMERICHOST 0x00000002 250 #define NI_NAMEREQD 0x00000004 251 #define NI_NUMERICSERV 0x00000008 252 #define NI_DGRAM 0x00000010 253 #if defined(_NETBSD_SOURCE) 254 #define NI_WITHSCOPEID 0x00000020 /*KAME extension*/ 255 #endif 256 257 /* 258 * Scope delimit character 259 */ 260 #if defined(_NETBSD_SOURCE) 261 #define SCOPE_DELIMITER '%' /*KAME extension*/ 262 #endif 263 #endif /* (_POSIX_C_SOURCE - 0) >= 200112L || ... */ 264 265 __BEGIN_DECLS 266 void endhostent __P((void)); 267 void endnetent __P((void)); 268 void endprotoent __P((void)); 269 void endservent __P((void)); 270 #if (_XOPEN_SOURCE - 0) >= 500 && (_XOPEN_SOURCE - 0) < 600 || \ 271 defined(_NETBSD_SOURCE) 272 void freehostent __P((struct hostent *)); 273 #endif 274 struct hostent *gethostbyaddr __P((const char *, socklen_t, int)); 275 struct hostent *gethostbyname __P((const char *)); 276 #if defined(_NETBSD_SOURCE) 277 struct hostent *gethostbyname2 __P((const char *, int)); 278 #endif 279 struct hostent *gethostent __P((void)); 280 #if (_XOPEN_SOURCE - 0) >= 520 && (_XOPEN_SOURCE - 0) < 600 || \ 281 defined(_NETBSD_SOURCE) 282 #if 0 /* we do not ship these */ 283 struct hostent *getipnodebyaddr __P((const void *, size_t, int, int *)); 284 struct hostent *getipnodebyname __P((const char *, int, int, int *)); 285 #endif 286 #endif 287 struct netent *getnetbyaddr __P((unsigned long, int)); 288 struct netent *getnetbyname __P((const char *)); 289 struct netent *getnetent __P((void)); 290 struct protoent *getprotobyname __P((const char *)); 291 struct protoent *getprotobynumber __P((int)); 292 struct protoent *getprotoent __P((void)); 293 struct servent *getservbyname __P((const char *, const char *)); 294 struct servent *getservbyport __P((int, const char *)); 295 struct servent *getservent __P((void)); 296 #if defined(_NETBSD_SOURCE) 297 void herror __P((const char *)); 298 const char *hstrerror __P((int)); 299 #endif 300 void sethostent __P((int)); 301 #if defined(_NETBSD_SOURCE) 302 /* void sethostfile __P((const char *)); */ 303 #endif 304 void setnetent __P((int)); 305 void setprotoent __P((int)); 306 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ 307 defined(_NETBSD_SOURCE) 308 int getaddrinfo __P((const char *, const char *, 309 const struct addrinfo *, struct addrinfo **)); 310 int getnameinfo __P((const struct sockaddr *, socklen_t, char *, 311 socklen_t, char *, socklen_t, int)); 312 void freeaddrinfo __P((struct addrinfo *)); 313 char *gai_strerror __P((int)); 314 #endif 315 void setservent __P((int)); 316 317 #if defined(_NETBSD_SOURCE) && defined(_LIBC) 318 319 struct protoent_data { 320 FILE *fp; 321 struct protoent proto; 322 char **aliases; 323 size_t maxaliases; 324 int stayopen; 325 char *line; 326 void *dummy; 327 }; 328 329 struct protoent *getprotoent_r __P((struct protoent *, struct protoent_data *)); 330 struct protoent *getprotobyname_r __P((const char *, 331 struct protoent *, struct protoent_data *)); 332 struct protoent *getprotobynumber_r __P((int, 333 struct protoent *, struct protoent_data *)); 334 struct protoent *getprotoent_r __P((struct protoent *, struct protoent_data *)); 335 void setprotoent_r __P((int, struct protoent_data *)); 336 void endprotoent_r __P((struct protoent_data *)); 337 338 struct servent_data { 339 FILE *fp; 340 struct servent serv; 341 char **aliases; 342 size_t maxaliases; 343 int stayopen; 344 char *line; 345 void *dummy; 346 }; 347 348 struct servent *getservent_r __P((struct servent *, struct servent_data *)); 349 struct servent *getservbyname_r __P((const char *, const char *, 350 struct servent *, struct servent_data *)); 351 struct servent *getservbyport_r __P((int, const char *, 352 struct servent *, struct servent_data *)); 353 void setservent_r __P((int, struct servent_data *)); 354 void endservent_r __P((struct servent_data *)); 355 356 #endif /* _NETBSD_SOURCE && _LIBC */ 357 __END_DECLS 358 359 #endif /* !_NETDB_H_ */ 360
Indexes created Sat Sep 27 14:09:57 GMT 2025