1 /*- 2 * Copyright (c) 1980, 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. 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 * - 34 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 35 * 36 * Permission to use, copy, modify, and distribute this software for any 37 * purpose with or without fee is hereby granted, provided that the above 38 * copyright notice and this permission notice appear in all copies, and that 39 * the name of Digital Equipment Corporation not be used in advertising or 40 * publicity pertaining to distribution of the document or software without 41 * specific, written prior permission. 42 * 43 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 44 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 45 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 46 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 47 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 48 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 49 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 50 * SOFTWARE. 51 * - 52 * --Copyright-- 53 */ 54 55 /* 56 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 57 * From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $ 58 * $FreeBSD: src/include/netdb.h,v 1.14.2.5 2001/08/29 08:46:51 alfred Exp $ 59 * $DragonFly: src/include/netdb.h,v 1.6 2008/05/22 06:50:14 hasso Exp $ 60 */ 61 62 #ifndef _NETDB_H_ 63 #define _NETDB_H_ 64 65 #ifndef _MACHINE_STDINT_H_ 66 #include <machine/stdint.h> 67 #endif 68 #include <sys/cdefs.h> 69 70 #ifndef _SIZE_T_DECLARED 71 #define _SIZE_T_DECLARED 72 typedef __size_t size_t; 73 #endif 74 75 #ifndef _SOCKLEN_T_DECLARED 76 #define _SOCKLEN_T_DECLARED 77 typedef __socklen_t socklen_t; 78 #endif 79 80 #ifndef _PATH_HEQUIV 81 # define _PATH_HEQUIV "/etc/hosts.equiv" 82 #endif 83 #define _PATH_HOSTS "/etc/hosts" 84 #define _PATH_NETWORKS "/etc/networks" 85 #define _PATH_PROTOCOLS "/etc/protocols" 86 #define _PATH_SERVICES "/etc/services" 87 88 extern int h_errno; 89 90 /* 91 * Structures returned by network data base library. All addresses are 92 * supplied in host order, and returned in network order (suitable for 93 * use in system calls). 94 */ 95 struct hostent { 96 char *h_name; /* official name of host */ 97 char **h_aliases; /* alias list */ 98 int h_addrtype; /* host address type */ 99 int h_length; /* length of address */ 100 char **h_addr_list; /* list of addresses from name server */ 101 #define h_addr h_addr_list[0] /* address, for backward compatibility */ 102 }; 103 104 /* 105 * Assumption here is that a network number 106 * fits in an unsigned long -- probably a poor one. 107 */ 108 struct netent { 109 char *n_name; /* official name of net */ 110 char **n_aliases; /* alias list */ 111 int n_addrtype; /* net address type */ 112 unsigned long n_net; /* network # */ 113 }; 114 115 struct servent { 116 char *s_name; /* official service name */ 117 char **s_aliases; /* alias list */ 118 int s_port; /* port # */ 119 char *s_proto; /* protocol to use */ 120 }; 121 122 struct protoent { 123 char *p_name; /* official protocol name */ 124 char **p_aliases; /* alias list */ 125 int p_proto; /* protocol # */ 126 }; 127 128 struct addrinfo { 129 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 130 int ai_family; /* PF_xxx */ 131 int ai_socktype; /* SOCK_xxx */ 132 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 133 size_t ai_addrlen; /* length of ai_addr */ 134 char *ai_canonname; /* canonical name for hostname */ 135 struct sockaddr *ai_addr; /* binary address */ 136 struct addrinfo *ai_next; /* next structure in linked list */ 137 }; 138 139 /* 140 * Error return codes from gethostbyname() and gethostbyaddr() 141 * (left in extern int h_errno). 142 */ 143 144 #define NETDB_INTERNAL -1 /* see errno */ 145 #define NETDB_SUCCESS 0 /* no problem */ 146 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 147 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 148 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 149 #define NO_DATA 4 /* Valid name, no data record of requested type */ 150 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 151 152 /* 153 * Error return codes from getaddrinfo() 154 */ 155 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 156 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 157 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 158 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 159 #define EAI_FAMILY 5 /* ai_family not supported */ 160 #define EAI_MEMORY 6 /* memory allocation failure */ 161 #define EAI_NODATA 7 /* no address associated with hostname */ 162 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 163 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 164 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 165 #define EAI_SYSTEM 11 /* system error returned in errno */ 166 #define EAI_BADHINTS 12 167 #define EAI_PROTOCOL 13 168 #define EAI_MAX 14 169 170 /* 171 * Flag values for getaddrinfo() 172 */ 173 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 174 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 175 #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 176 #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ 177 /* valid flags for addrinfo (not a standard def, apps should not use it) */ 178 #define AI_MASK \ 179 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 180 AI_ADDRCONFIG) 181 182 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 183 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 184 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 185 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 186 /* special recommended flags for getipnodebyname */ 187 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 188 189 /* 190 * Constants for getnameinfo() 191 */ 192 #define NI_MAXHOST 1025 193 #define NI_MAXSERV 32 194 195 /* 196 * Flag values for getnameinfo() 197 */ 198 #define NI_NOFQDN 0x00000001 199 #define NI_NUMERICHOST 0x00000002 200 #define NI_NAMEREQD 0x00000004 201 #define NI_NUMERICSERV 0x00000008 202 #define NI_DGRAM 0x00000010 203 #define NI_WITHSCOPEID 0x00000020 204 205 /* 206 * Scope delimit character 207 */ 208 #define SCOPE_DELIMITER '%' 209 210 /* 211 * data types - basically forward decl for getnameinfo() 212 */ 213 214 __BEGIN_DECLS 215 void endhostent (void); 216 void endnetent (void); 217 void endnetgrent (void); 218 void endprotoent (void); 219 void endservent (void); 220 void freehostent (struct hostent *); 221 struct hostent *gethostbyaddr (const char *, int, int); 222 struct hostent *gethostbyname (const char *); 223 struct hostent *gethostbyname2 (const char *, int); 224 struct hostent *gethostent (void); 225 struct hostent *getipnodebyaddr (const void *, size_t, int, int *); 226 struct hostent *getipnodebyname (const char *, int, int, int *); 227 struct netent *getnetbyaddr (unsigned long, int); 228 struct netent *getnetbyname (const char *); 229 struct netent *getnetent (void); 230 int getnetgrent (char **, char **, char **); 231 struct protoent *getprotobyname (const char *); 232 struct protoent *getprotobynumber (int); 233 struct protoent *getprotoent (void); 234 struct servent *getservbyname (const char *, const char *); 235 struct servent *getservbyport (int, const char *); 236 struct servent *getservent (void); 237 void herror (const char *); 238 __const char *hstrerror (int); 239 int innetgr (const char *, const char *, const char *, 240 const char *); 241 void sethostent (int); 242 /* void sethostfile (const char *); */ 243 void setnetent (int); 244 void setprotoent (int); 245 int getaddrinfo (const char *, const char *, 246 const struct addrinfo *, struct addrinfo **); 247 int getnameinfo (const struct sockaddr *, socklen_t, char *, 248 size_t, char *, size_t, int); 249 void freeaddrinfo (struct addrinfo *); 250 char *gai_strerror (int); 251 void setnetgrent (const char *); 252 void setservent (int); 253 254 /* 255 * PRIVATE functions specific to the FreeBSD implementation 256 */ 257 258 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */ 259 void _sethosthtent (int); 260 void _endhosthtent (void); 261 void _sethostdnsent (int); 262 void _endhostdnsent (void); 263 void _setnethtent (int); 264 void _endnethtent (void); 265 void _setnetdnsent (int); 266 void _endnetdnsent (void); 267 struct hostent * _gethostbyhtname (const char *, int); 268 struct hostent * _gethostbydnsname (const char *, int); 269 struct hostent * _gethostbynisname (const char *, int); 270 struct hostent * _gethostbyhtaddr (const char *, int, int); 271 struct hostent * _gethostbydnsaddr (const char *, int, int); 272 struct hostent * _gethostbynisaddr (const char *, int, int); 273 struct netent * _getnetbyhtname (const char *); 274 struct netent * _getnetbydnsname (const char *); 275 struct netent * _getnetbynisname (const char *); 276 struct netent * _getnetbyhtaddr (unsigned long, int); 277 struct netent * _getnetbydnsaddr (unsigned long, int); 278 struct netent * _getnetbynisaddr (unsigned long, int); 279 void _map_v4v6_address (const char *, char *); 280 void _map_v4v6_hostent (struct hostent *, char **, int *); 281 __END_DECLS 282 283 #endif /* !_NETDB_H_ */ 284