netdb.h revision 1.12
1 /* $NetBSD: netdb.h,v 1.12 1999/07/01 18:15:41 itojun 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 <sys/cdefs.h> 92 #include <sys/types.h> 93 94 #include <inttypes.h> 95 96 #if !defined(_XOPEN_SOURCE) 97 #define _PATH_HEQUIV "/etc/hosts.equiv" 98 #define _PATH_HOSTS "/etc/hosts" 99 #define _PATH_NETWORKS "/etc/networks" 100 #define _PATH_PROTOCOLS "/etc/protocols" 101 #define _PATH_SERVICES "/etc/services" 102 #endif 103 104 extern int h_errno; 105 106 /* 107 * Structures returned by network data base library. All addresses are 108 * supplied in host order, and returned in network order (suitable for 109 * use in system calls). 110 */ 111 struct hostent { 112 char *h_name; /* official name of host */ 113 char **h_aliases; /* alias list */ 114 int h_addrtype; /* host address type */ 115 int h_length; /* length of address */ 116 char **h_addr_list; /* list of addresses from name server */ 117 #define h_addr h_addr_list[0] /* address, for backward compatiblity */ 118 }; 119 120 /* 121 * Assumption here is that a network number 122 * fits in an unsigned long -- probably a poor one. 123 */ 124 struct netent { 125 char *n_name; /* official name of net */ 126 char **n_aliases; /* alias list */ 127 int n_addrtype; /* net address type */ 128 unsigned long n_net; /* network # XXX */ 129 }; 130 131 struct servent { 132 char *s_name; /* official service name */ 133 char **s_aliases; /* alias list */ 134 int s_port; /* port # */ 135 char *s_proto; /* protocol to use */ 136 }; 137 138 struct protoent { 139 char *p_name; /* official protocol name */ 140 char **p_aliases; /* alias list */ 141 int p_proto; /* protocol # */ 142 }; 143 144 struct addrinfo { 145 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 146 int ai_family; /* PF_xxx */ 147 int ai_socktype; /* SOCK_xxx */ 148 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 149 size_t ai_addrlen; /* length of ai_addr */ 150 char *ai_canonname; /* canonical name for hostname */ 151 struct sockaddr *ai_addr; /* binary address */ 152 struct addrinfo *ai_next; /* next structure in linked list */ 153 }; 154 155 /* 156 * Error return codes from gethostbyname() and gethostbyaddr() 157 * (left in extern int h_errno). 158 */ 159 160 #if !defined(_XOPEN_SOURCE) 161 #define NETDB_INTERNAL -1 /* see errno */ 162 #define NETDB_SUCCESS 0 /* no problem */ 163 #endif 164 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 165 #define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 166 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 167 #define NO_DATA 4 /* Valid name, no data record of requested type */ 168 #if !defined(_XOPEN_SOURCE) 169 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 170 #endif 171 172 /* 173 * Error return codes from getaddrinfo() 174 */ 175 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 176 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 177 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 178 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 179 #define EAI_FAMILY 5 /* ai_family not supported */ 180 #define EAI_MEMORY 6 /* memory allocation failure */ 181 #define EAI_NODATA 7 /* no address associated with hostname */ 182 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 183 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 184 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 185 #define EAI_SYSTEM 11 /* system error returned in errno */ 186 #define EAI_BADHINTS 12 187 #define EAI_PROTOCOL 13 188 #define EAI_MAX 14 189 190 /* 191 * Flag values for getaddrinfo() 192 */ 193 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 194 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 195 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */ 196 /* valid flags for addrinfo */ 197 #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST) 198 199 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 200 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 201 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 202 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 203 /* special recommended flags for getipnodebyname */ 204 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 205 206 /* 207 * Constants for getnameinfo() 208 */ 209 #define NI_MAXHOST 1025 210 #define NI_MAXSERV 32 211 212 /* 213 * Flag values for getnameinfo() 214 */ 215 #define NI_NOFQDN 0x00000001 216 #define NI_NUMERICHOST 0x00000002 217 #define NI_NAMEREQD 0x00000004 218 #define NI_NUMERICSERV 0x00000008 219 #define NI_DGRAM 0x00000010 220 221 __BEGIN_DECLS 222 void endhostent __P((void)); 223 void endnetent __P((void)); 224 void endprotoent __P((void)); 225 void endservent __P((void)); 226 void freehostent __P((struct hostent *)); 227 struct hostent *gethostbyaddr __P((const char *, int, int)); 228 struct hostent *gethostbyname __P((const char *)); 229 #if !defined(_XOPEN_SOURCE) 230 struct hostent *gethostbyname2 __P((const char *, int)); 231 #endif 232 struct hostent *gethostent __P((void)); 233 struct hostent *getipnodebyaddr __P((const void *, size_t, int, int *)); 234 struct hostent *getipnodebyname __P((const char *, int, int, int *)); 235 struct netent *getnetbyaddr __P((unsigned long, int)); 236 struct netent *getnetbyname __P((const char *)); 237 struct netent *getnetent __P((void)); 238 struct protoent *getprotobyname __P((const char *)); 239 struct protoent *getprotobynumber __P((int)); 240 struct protoent *getprotoent __P((void)); 241 struct servent *getservbyname __P((const char *, const char *)); 242 struct servent *getservbyport __P((int, const char *)); 243 struct servent *getservent __P((void)); 244 #if !defined(_XOPEN_SOURCE) 245 void herror __P((const char *)); 246 const char *hstrerror __P((int)); 247 #endif 248 void sethostent __P((int)); 249 #if !defined(_XOPEN_SOURCE) 250 /* void sethostfile __P((const char *)); */ 251 #endif 252 void setnetent __P((int)); 253 void setprotoent __P((int)); 254 int getaddrinfo __P((const char *, const char *, 255 const struct addrinfo *, struct addrinfo **)); 256 int getnameinfo __P((const struct sockaddr *, size_t, char *, 257 size_t, char *, size_t, int)); 258 void freeaddrinfo __P((struct addrinfo *)); 259 char *gai_strerror __P((int)); 260 void setservent __P((int)); 261 __END_DECLS 262 263 #endif /* !_NETDB_H_ */ 264
Indexes created Sun Sep 28 07:09:56 GMT 2025