1 /* $OpenBSD: netdb.h,v 1.16 2002/02/17 19:42:21 millert 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. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * - 37 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 38 * 39 * Permission to use, copy, modify, and distribute this software for any 40 * purpose with or without fee is hereby granted, provided that the above 41 * copyright notice and this permission notice appear in all copies, and that 42 * the name of Digital Equipment Corporation not be used in advertising or 43 * publicity pertaining to distribution of the document or software without 44 * specific, written prior permission. 45 * 46 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 47 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 49 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 50 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 51 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 52 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 53 * SOFTWARE. 54 * - 55 * --Copyright-- 56 */ 57 58 /* 59 * Copyright (c) 1995, 1996, 1997, 1998, 1999 Craig Metz. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 1. Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * 2. Redistributions in binary form must reproduce the above copyright 67 * notice, this list of conditions and the following disclaimer in the 68 * documentation and/or other materials provided with the distribution. 69 * 3. Neither the name of the author nor the names of any contributors 70 * may be used to endorse or promote products derived from this software 71 * without specific prior written permission. 72 * 73 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 74 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 76 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 77 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 78 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 79 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 80 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 81 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 82 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 83 * SUCH DAMAGE. 84 */ 85 86 /* 87 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 88 * $From: netdb.h,v 8.7 1996/05/09 05:59:09 vixie Exp $ 89 */ 90 91 #ifndef _NETDB_H_ 92 #define _NETDB_H_ 93 94 #include <sys/param.h> 95 #if (!defined(BSD)) || (BSD < 199306) 96 # include <sys/bitypes.h> 97 #endif 98 #include <sys/cdefs.h> 99 100 #define _PATH_HEQUIV "/etc/hosts.equiv" 101 #define _PATH_HOSTS "/etc/hosts" 102 #define _PATH_NETWORKS "/etc/networks" 103 #define _PATH_PROTOCOLS "/etc/protocols" 104 #define _PATH_SERVICES "/etc/services" 105 106 extern int h_errno; 107 108 /* 109 * Structures returned by network data base library. All addresses are 110 * supplied in host order, and returned in network order (suitable for 111 * use in system calls). 112 */ 113 struct hostent { 114 char *h_name; /* official name of host */ 115 char **h_aliases; /* alias list */ 116 int h_addrtype; /* host address type */ 117 int h_length; /* length of address */ 118 char **h_addr_list; /* list of addresses from name server */ 119 #define h_addr h_addr_list[0] /* address, for backward compatiblity */ 120 }; 121 122 /* 123 * Assumption here is that a network number 124 * fits in an in_addr_t -- probably a poor one. 125 */ 126 struct netent { 127 char *n_name; /* official name of net */ 128 char **n_aliases; /* alias list */ 129 int n_addrtype; /* net address type */ 130 in_addr_t n_net; /* network # */ 131 }; 132 133 struct servent { 134 char *s_name; /* official service name */ 135 char **s_aliases; /* alias list */ 136 int s_port; /* port # */ 137 char *s_proto; /* protocol to use */ 138 }; 139 140 struct protoent { 141 char *p_name; /* official protocol name */ 142 char **p_aliases; /* alias list */ 143 int p_proto; /* protocol # */ 144 }; 145 146 /* 147 * Error return codes from gethostbyname() and gethostbyaddr() 148 * (left in extern int h_errno). 149 */ 150 151 #define NETDB_INTERNAL -1 /* see errno */ 152 #define NETDB_SUCCESS 0 /* no problem */ 153 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 154 #define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 155 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 156 #define NO_DATA 4 /* Valid name, no data record of requested type */ 157 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 158 159 /* Values for getaddrinfo() and getnameinfo() */ 160 #define AI_PASSIVE 1 /* socket address is intended for bind() */ 161 #define AI_CANONNAME 2 /* request for canonical name */ 162 #define AI_NUMERICHOST 4 /* don't ever try nameservice */ 163 #define AI_EXT 8 /* enable non-portable extensions */ 164 /* valid flags for addrinfo */ 165 #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST) 166 167 #define NI_NUMERICHOST 1 /* return the host address, not the name */ 168 #define NI_NUMERICSERV 2 /* return the service address, not the name */ 169 #define NI_NOFQDN 4 /* return a short name if in the local domain */ 170 #define NI_NAMEREQD 8 /* fail if either host or service name is unknown */ 171 #define NI_DGRAM 16 /* look up datagram service instead of stream */ 172 #define NI_WITHSCOPEID 32 /* KAME hack: attach scopeid to host portion */ 173 174 #define NI_MAXHOST MAXHOSTNAMELEN /* max host name returned by getnameinfo */ 175 #define NI_MAXSERV 32 /* max serv. name length returned by getnameinfo */ 176 177 /* 178 * Scope delimit character (KAME hack) 179 */ 180 #define SCOPE_DELIMITER '%' 181 182 #define EAI_BADFLAGS -1 /* invalid value for ai_flags */ 183 #define EAI_NONAME -2 /* name or service is not known */ 184 #define EAI_AGAIN -3 /* temporary failure in name resolution */ 185 #define EAI_FAIL -4 /* non-recoverable failure in name resolution */ 186 #define EAI_NODATA -5 /* no address associated with name */ 187 #define EAI_FAMILY -6 /* ai_family not supported */ 188 #define EAI_SOCKTYPE -7 /* ai_socktype not supported */ 189 #define EAI_SERVICE -8 /* service not supported for ai_socktype */ 190 #define EAI_ADDRFAMILY -9 /* address family for name not supported */ 191 #define EAI_MEMORY -10 /* memory allocation failure */ 192 #define EAI_SYSTEM -11 /* system error (code indicated in errno) */ 193 #define EAI_BADHINTS -12 /* invalid value for hints */ 194 #define EAI_PROTOCOL -13 /* resolved protocol is unknown */ 195 196 struct addrinfo { 197 int ai_flags; /* input flags */ 198 int ai_family; /* protocol family for socket */ 199 int ai_socktype; /* socket type */ 200 int ai_protocol; /* protocol for socket */ 201 socklen_t ai_addrlen; /* length of socket-address */ 202 struct sockaddr *ai_addr; /* socket-address for socket */ 203 char *ai_canonname; /* canonical name for service location (iff req) */ 204 struct addrinfo *ai_next; /* pointer to next in list */ 205 }; 206 207 /* 208 * Flags for getrrsetbyname() 209 */ 210 #define RRSET_VALIDATED 1 211 212 /* 213 * Return codes for getrrsetbyname() 214 */ 215 #define ERRSET_SUCCESS 0 216 #define ERRSET_NOMEMORY 1 217 #define ERRSET_FAIL 2 218 #define ERRSET_INVAL 3 219 #define ERRSET_NONAME 4 220 #define ERRSET_NODATA 5 221 222 /* 223 * Structures used by getrrsetbyname() and freerrset() 224 */ 225 struct rdatainfo { 226 unsigned int rdi_length; /* length of data */ 227 unsigned char *rdi_data; /* record data */ 228 }; 229 230 struct rrsetinfo { 231 unsigned int rri_flags; /* RRSET_VALIDATED ... */ 232 unsigned int rri_rdclass; /* class number */ 233 unsigned int rri_rdtype; /* RR type number */ 234 unsigned int rri_ttl; /* time to live */ 235 unsigned int rri_nrdatas; /* size of rdatas array */ 236 unsigned int rri_nsigs; /* size of sigs array */ 237 char *rri_name; /* canonical name */ 238 struct rdatainfo *rri_rdatas; /* individual records */ 239 struct rdatainfo *rri_sigs; /* individual signatures */ 240 }; 241 242 __BEGIN_DECLS 243 void endhostent(void); 244 void endnetent(void); 245 void endprotoent(void); 246 void endservent(void); 247 struct hostent *gethostbyaddr(const char *, int, int); 248 struct hostent *gethostbyname(const char *); 249 struct hostent *gethostbyname2(const char *, int); 250 struct hostent *gethostent(void); 251 struct netent *getnetbyaddr(in_addr_t, int); 252 struct netent *getnetbyname(const char *); 253 struct netent *getnetent(void); 254 struct protoent *getprotobyname(const char *); 255 struct protoent *getprotobynumber(int); 256 struct protoent *getprotoent(void); 257 struct servent *getservbyname(const char *, const char *); 258 struct servent *getservbyport(int, const char *); 259 struct servent *getservent(void); 260 void herror(const char *); 261 const char *hstrerror(int); 262 void sethostent(int); 263 /* void sethostfile(const char *); */ 264 void setnetent(int); 265 void setprotoent(int); 266 void setservent(int); 267 268 int getaddrinfo(const char *, const char *, 269 const struct addrinfo *, struct addrinfo **); 270 void freeaddrinfo(struct addrinfo *); 271 int getnameinfo(const struct sockaddr *, socklen_t, 272 char *, size_t, char *, size_t, int); 273 char *gai_strerror(int); 274 int net_addrcmp(struct sockaddr *, struct sockaddr *); 275 int getrrsetbyname(const char *, unsigned int, unsigned int, unsigned int, struct rrsetinfo **); 276 void freerrset(struct rrsetinfo *); 277 __END_DECLS 278 279 /* This is nec'y to make this include file properly replace the sun version. */ 280 #ifdef sun 281 #ifdef __GNU_LIBRARY__ 282 #include <rpc/netdb.h> 283 #else 284 struct rpcent { 285 char *r_name; /* name of server for this rpc program */ 286 char **r_aliases; /* alias list */ 287 int r_number; /* rpc program number */ 288 }; 289 struct rpcent *getrpcbyname(), *getrpcbynumber(), *getrpcent(); 290 #endif /* __GNU_LIBRARY__ */ 291 #endif /* sun */ 292 293 #endif /* !_NETDB_H_ */ 294