netdb.h revision 1.22
1 /* $NetBSD: netdb.h,v 1.22 2002/05/10 22:02:11 kleink 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. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 65 * Id: netdb.h,v 4.9.1.2 1993/05/17 09:59:01 vixie Exp 66 * - 67 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 68 * 69 * Permission to use, copy, modify, and distribute this software for any 70 * purpose with or without fee is hereby granted, provided that the above 71 * copyright notice and this permission notice appear in all copies, and that 72 * the name of Digital Equipment Corporation not be used in advertising or 73 * publicity pertaining to distribution of the document or software without 74 * specific, written prior permission. 75 * 76 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 77 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 78 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 79 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 80 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 81 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 82 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 83 * SOFTWARE. 84 * - 85 * --Copyright-- 86 */ 87 88 #ifndef _NETDB_H_ 89 #define _NETDB_H_ 90 91 #include <machine/ansi.h> 92 #include <sys/cdefs.h> 93 #include <inttypes.h> 94 95 #ifdef _BSD_SIZE_T_ 96 typedef _BSD_SIZE_T_ size_t; 97 #undef _BSD_SIZE_T_ 98 #endif 99 100 #if !defined(_XOPEN_SOURCE) 101 #define _PATH_HEQUIV "/etc/hosts.equiv" 102 #define _PATH_HOSTS "/etc/hosts" 103 #define _PATH_NETWORKS "/etc/networks" 104 #define _PATH_PROTOCOLS "/etc/protocols" 105 #define _PATH_SERVICES "/etc/services" 106 #endif 107 108 extern int h_errno; 109 110 /* 111 * Structures returned by network data base library. All addresses are 112 * supplied in host order, and returned in network order (suitable for 113 * use in system calls). 114 */ 115 struct hostent { 116 char *h_name; /* official name of host */ 117 char **h_aliases; /* alias list */ 118 int h_addrtype; /* host address type */ 119 int h_length; /* length of address */ 120 char **h_addr_list; /* list of addresses from name server */ 121 #define h_addr h_addr_list[0] /* address, for backward compatiblity */ 122 }; 123 124 /* 125 * Assumption here is that a network number 126 * fits in an unsigned long -- probably a poor one. 127 */ 128 struct netent { 129 char *n_name; /* official name of net */ 130 char **n_aliases; /* alias list */ 131 int n_addrtype; /* net address type */ 132 unsigned long n_net; /* network # XXX */ 133 }; 134 135 struct servent { 136 char *s_name; /* official service name */ 137 char **s_aliases; /* alias list */ 138 int s_port; /* port # */ 139 char *s_proto; /* protocol to use */ 140 }; 141 142 struct protoent { 143 char *p_name; /* official protocol name */ 144 char **p_aliases; /* alias list */ 145 int p_proto; /* protocol # */ 146 }; 147 148 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 149 struct addrinfo { 150 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 151 int ai_family; /* PF_xxx */ 152 int ai_socktype; /* SOCK_xxx */ 153 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 154 size_t ai_addrlen; /* length of ai_addr */ 155 char *ai_canonname; /* canonical name for hostname */ 156 struct sockaddr *ai_addr; /* binary address */ 157 struct addrinfo *ai_next; /* next structure in linked list */ 158 }; 159 #endif 160 161 /* 162 * Error return codes from gethostbyname() and gethostbyaddr() 163 * (left in extern int h_errno). 164 */ 165 166 #if !defined(_XOPEN_SOURCE) 167 #define NETDB_INTERNAL -1 /* see errno */ 168 #define NETDB_SUCCESS 0 /* no problem */ 169 #endif 170 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 171 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 172 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 173 #define NO_DATA 4 /* Valid name, no data record of requested type */ 174 #if !defined(_XOPEN_SOURCE) 175 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 176 #endif 177 178 /* 179 * Error return codes from getaddrinfo() 180 */ 181 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 182 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 183 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 184 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 185 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 186 #define EAI_FAMILY 5 /* ai_family not supported */ 187 #define EAI_MEMORY 6 /* memory allocation failure */ 188 #define EAI_NODATA 7 /* no address associated with hostname */ 189 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 190 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 191 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 192 #define EAI_SYSTEM 11 /* system error returned in errno */ 193 #define EAI_BADHINTS 12 194 #define EAI_PROTOCOL 13 195 #define EAI_MAX 14 196 #endif /* !_XOPEN_SOURCE || (_XOPEN_SOURCE - 0) >= 520 */ 197 198 /* 199 * Flag values for getaddrinfo() 200 */ 201 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 202 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 203 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 204 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */ 205 /* valid flags for addrinfo */ 206 #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST) 207 #endif 208 209 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 210 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 211 #endif 212 #if !defined(_XOPEN_SOURCE) 213 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 214 #endif 215 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 216 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 217 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 218 #endif 219 #if !defined(_XOPEN_SOURCE) 220 /* special recommended flags for getipnodebyname */ 221 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 222 #endif 223 224 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 225 /* 226 * Constants for getnameinfo() 227 */ 228 #if !defined(_XOPEN_SOURCE) 229 #define NI_MAXHOST 1025 230 #define NI_MAXSERV 32 231 #endif 232 233 /* 234 * Flag values for getnameinfo() 235 */ 236 #define NI_NOFQDN 0x00000001 237 #define NI_NUMERICHOST 0x00000002 238 #define NI_NAMEREQD 0x00000004 239 #define NI_NUMERICSERV 0x00000008 240 #define NI_DGRAM 0x00000010 241 #if !defined(_XOPEN_SOURCE) 242 #define NI_WITHSCOPEID 0x00000020 /*KAME extension*/ 243 #endif 244 245 /* 246 * Scope delimit character 247 */ 248 #if !defined(_XOPEN_SOURCE) 249 #define SCOPE_DELIMITER '%' /*KAME extension*/ 250 #endif 251 #endif /* !_XOPEN_SOURCE || (_XOPEN_SOURCE - 0) >= 520 */ 252 253 /* 254 * Data types 255 */ 256 #include <sys/ansi.h> 257 #ifndef socklen_t 258 typedef __socklen_t socklen_t; 259 #define socklen_t __socklen_t 260 #endif 261 262 __BEGIN_DECLS 263 void endhostent __P((void)); 264 void endnetent __P((void)); 265 void endprotoent __P((void)); 266 void endservent __P((void)); 267 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 500 268 void freehostent __P((struct hostent *)); 269 #endif 270 struct hostent *gethostbyaddr __P((const char *, socklen_t, int)); 271 struct hostent *gethostbyname __P((const char *)); 272 #if !defined(_XOPEN_SOURCE) 273 struct hostent *gethostbyname2 __P((const char *, int)); 274 #endif 275 struct hostent *gethostent __P((void)); 276 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 277 #if 0 /* we do not ship these */ 278 struct hostent *getipnodebyaddr __P((const void *, size_t, int, int *)); 279 struct hostent *getipnodebyname __P((const char *, int, int, int *)); 280 #endif 281 #endif 282 struct netent *getnetbyaddr __P((unsigned long, int)); 283 struct netent *getnetbyname __P((const char *)); 284 struct netent *getnetent __P((void)); 285 struct protoent *getprotobyname __P((const char *)); 286 struct protoent *getprotobynumber __P((int)); 287 struct protoent *getprotoent __P((void)); 288 struct servent *getservbyname __P((const char *, const char *)); 289 struct servent *getservbyport __P((int, const char *)); 290 struct servent *getservent __P((void)); 291 #if !defined(_XOPEN_SOURCE) 292 void herror __P((const char *)); 293 const char *hstrerror __P((int)); 294 #endif 295 void sethostent __P((int)); 296 #if !defined(_XOPEN_SOURCE) 297 /* void sethostfile __P((const char *)); */ 298 #endif 299 void setnetent __P((int)); 300 void setprotoent __P((int)); 301 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 302 int getaddrinfo __P((const char *, const char *, 303 const struct addrinfo *, struct addrinfo **)); 304 int getnameinfo __P((const struct sockaddr *, socklen_t, char *, 305 size_t, char *, size_t, int)); 306 void freeaddrinfo __P((struct addrinfo *)); 307 char *gai_strerror __P((int)); 308 #endif 309 void setservent __P((int)); 310 __END_DECLS 311 312 #endif /* !_NETDB_H_ */ 313
Indexes created Wed Sep 24 15:09:51 GMT 2025