1 /* 2 * Copyright 2014 Garrett D'Amore <garrett@damore.org> 3 * 4 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 5 * Use is subject to license terms. 6 */ 7 8 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 9 /* All Rights Reserved */ 10 11 /* 12 * BIND 4.9.3: 13 * 14 * Copyright (c) 1980, 1983, 1988, 1993 15 * The Regents of the University of California. All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 3. All advertising materials mentioning features or use of this software 26 * must display the following acknowledgement: 27 * This product includes software developed by the University of 28 * California, Berkeley and its contributors. 29 * 4. Neither the name of the University nor the names of its contributors 30 * may be used to endorse or promote products derived from this software 31 * without specific prior written permission. 32 * 33 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 36 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 43 * SUCH DAMAGE. 44 * - 45 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 46 * 47 * Permission to use, copy, modify, and distribute this software for any 48 * purpose with or without fee is hereby granted, provided that the above 49 * copyright notice and this permission notice appear in all copies, and that 50 * the name of Digital Equipment Corporation not be used in advertising or 51 * publicity pertaining to distribution of the document or software without 52 * specific, written prior permission. 53 * 54 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 55 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 56 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 57 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 58 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 59 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 60 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 61 * SOFTWARE. 62 * --Copyright-- 63 * 64 * End BIND 4.9.3 65 */ 66 67 /* 68 * Structures returned by network data base library. 69 * All addresses are supplied in host order, and 70 * returned in network order (suitable for use in system calls). 71 */ 72 73 #ifndef _NETDB_H 74 #define _NETDB_H 75 76 #include <sys/types.h> 77 #include <netinet/in.h> 78 #if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) 79 #include <sys/socket.h> 80 #endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */ 81 #include <sys/feature_tests.h> 82 83 #ifdef __cplusplus 84 extern "C" { 85 #endif 86 87 #define _PATH_HEQUIV "/etc/hosts.equiv" 88 #define _PATH_HOSTS "/etc/hosts" 89 #define _PATH_IPNODES "/etc/inet/ipnodes" 90 #define _PATH_IPSECALGS "/etc/inet/ipsecalgs" 91 #define _PATH_NETMASKS "/etc/netmasks" 92 #define _PATH_NETWORKS "/etc/networks" 93 #define _PATH_PROTOCOLS "/etc/protocols" 94 #define _PATH_SERVICES "/etc/services" 95 96 struct hostent { 97 char *h_name; /* official name of host */ 98 char **h_aliases; /* alias list */ 99 int h_addrtype; /* host address type */ 100 int h_length; /* length of address */ 101 char **h_addr_list; /* list of addresses from name server */ 102 #define h_addr h_addr_list[0] /* address, for backward compatiblity */ 103 }; 104 105 106 /* 107 * addrinfo introduced with IPv6 for Protocol-Independent Hostname 108 * and Service Name Translation. 109 */ 110 111 #if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) 112 struct addrinfo { 113 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, ... */ 114 int ai_family; /* PF_xxx */ 115 int ai_socktype; /* SOCK_xxx */ 116 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 117 #ifdef __sparcv9 118 int _ai_pad; /* for backwards compat with old size_t */ 119 #endif /* __sparcv9 */ 120 socklen_t ai_addrlen; 121 char *ai_canonname; /* canonical name for hostname */ 122 struct sockaddr *ai_addr; /* binary address */ 123 struct addrinfo *ai_next; /* next structure in linked list */ 124 }; 125 126 127 /* addrinfo flags */ 128 #define AI_PASSIVE 0x0008 /* intended for bind() + listen() */ 129 #define AI_CANONNAME 0x0010 /* return canonical version of host */ 130 #define AI_NUMERICHOST 0x0020 /* use numeric node address string */ 131 #define AI_NUMERICSERV 0x0040 /* servname is assumed numeric */ 132 133 /* getipnodebyname() flags */ 134 #define AI_V4MAPPED 0x0001 /* IPv4 mapped addresses if no IPv6 */ 135 #define AI_ALL 0x0002 /* IPv6 and IPv4 mapped addresses */ 136 #define AI_ADDRCONFIG 0x0004 /* AAAA or A records only if IPv6/IPv4 cnfg'd */ 137 138 139 /* 140 * These were defined in RFC 2553 but not SUSv3 141 * or RFC 3493 which obsoleted 2553. 142 */ 143 #if !defined(_XPG6) || defined(__EXTENSIONS__) 144 #define AI_DEFAULT (AI_V4MAPPED | AI_ADDRCONFIG) 145 146 /* addrinfo errors */ 147 #define EAI_ADDRFAMILY 1 /* address family not supported */ 148 #define EAI_NODATA 7 /* no address */ 149 #endif /* !defined(_XPG6) || defined(__EXTENSIONS__) */ 150 #define EAI_AGAIN 2 /* DNS temporary failure */ 151 #define EAI_BADFLAGS 3 /* invalid ai_flags */ 152 #define EAI_FAIL 4 /* DNS non-recoverable failure */ 153 #define EAI_FAMILY 5 /* ai_family not supported */ 154 #define EAI_MEMORY 6 /* memory allocation failure */ 155 #define EAI_NONAME 8 /* host/servname not known */ 156 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 157 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 158 #define EAI_SYSTEM 11 /* system error in errno */ 159 #define EAI_OVERFLOW 12 /* argument buffer overflow */ 160 #define EAI_PROTOCOL 13 161 #define EAI_MAX 14 162 163 /* getnameinfo flags */ 164 #define NI_NOFQDN 0x0001 165 #define NI_NUMERICHOST 0x0002 /* return numeric form of address */ 166 #define NI_NAMEREQD 0x0004 /* request DNS name */ 167 #define NI_NUMERICSERV 0x0008 168 #define NI_DGRAM 0x0010 169 170 #if !defined(_XPG6) || defined(__EXTENSIONS__) 171 /* Not listed in any standards document */ 172 #define NI_WITHSCOPEID 0x0020 173 #define NI_NUMERICSCOPE 0x0040 174 175 /* getnameinfo max sizes as defined in RFC 2553 obsoleted in RFC 3493 */ 176 #define NI_MAXHOST 1025 177 #define NI_MAXSERV 32 178 #endif /* !defined(_XPG6) || defined(__EXTENSIONS__) */ 179 #endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */ 180 181 /* 182 * Scope delimit character 183 */ 184 #define SCOPE_DELIMITER '%' 185 186 187 /* 188 * Algorithm entry for /etc/inet/ipsecalgs which defines IPsec protocols 189 * and algorithms. 190 */ 191 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 192 typedef struct ipsecalgent { 193 char **a_names; /* algorithm names */ 194 int a_proto_num; /* protocol number */ 195 int a_alg_num; /* algorithm number */ 196 char *a_mech_name; /* encryption framework mechanism name */ 197 int *a_block_sizes; /* supported block sizes */ 198 int *a_key_sizes; /* supported key sizes */ 199 int a_key_increment; /* key size increment */ 200 int *a_mech_params; /* mechanism specific parameters */ 201 int a_alg_flags; /* algorithm flags */ 202 } ipsecalgent_t; 203 204 /* well-known IPsec protocol numbers */ 205 206 #define IPSEC_PROTO_AH 2 207 #define IPSEC_PROTO_ESP 3 208 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 209 210 /* 211 * Assumption here is that a network number 212 * fits in 32 bits -- probably a poor one. 213 */ 214 struct netent { 215 char *n_name; /* official name of net */ 216 char **n_aliases; /* alias list */ 217 int n_addrtype; /* net address type */ 218 in_addr_t n_net; /* network # */ 219 }; 220 221 struct protoent { 222 char *p_name; /* official protocol name */ 223 char **p_aliases; /* alias list */ 224 int p_proto; /* protocol # */ 225 }; 226 227 struct servent { 228 char *s_name; /* official service name */ 229 char **s_aliases; /* alias list */ 230 int s_port; /* port # */ 231 char *s_proto; /* protocol to use */ 232 }; 233 234 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 235 struct hostent *gethostbyname_r 236 (const char *, struct hostent *, char *, int, int *h_errnop); 237 struct hostent *gethostbyaddr_r 238 (const char *, int, int, struct hostent *, char *, int, int *h_errnop); 239 struct hostent *getipnodebyname(const char *, int, int, int *); 240 struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 241 void freehostent(struct hostent *); 242 struct hostent *gethostent_r(struct hostent *, char *, int, int *h_errnop); 243 244 struct servent *getservbyname_r 245 (const char *name, const char *, struct servent *, char *, int); 246 struct servent *getservbyport_r 247 (int port, const char *, struct servent *, char *, int); 248 struct servent *getservent_r(struct servent *, char *, int); 249 250 struct netent *getnetbyname_r 251 (const char *, struct netent *, char *, int); 252 struct netent *getnetbyaddr_r(long, int, struct netent *, char *, int); 253 struct netent *getnetent_r(struct netent *, char *, int); 254 255 struct protoent *getprotobyname_r 256 (const char *, struct protoent *, char *, int); 257 struct protoent *getprotobynumber_r 258 (int, struct protoent *, char *, int); 259 struct protoent *getprotoent_r(struct protoent *, char *, int); 260 261 int getnetgrent_r(char **, char **, char **, char *, int); 262 int innetgr(const char *, const char *, const char *, const char *); 263 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 264 265 /* Old interfaces that return a pointer to a static area; MT-unsafe */ 266 struct hostent *gethostbyname(const char *); 267 struct hostent *gethostent(void); 268 struct netent *getnetbyaddr(in_addr_t, int); 269 struct netent *getnetbyname(const char *); 270 struct netent *getnetent(void); 271 struct protoent *getprotobyname(const char *); 272 struct protoent *getprotobynumber(int); 273 struct protoent *getprotoent(void); 274 struct servent *getservbyname(const char *, const char *); 275 struct servent *getservbyport(int, const char *); 276 struct servent *getservent(void); 277 278 /* gethostbyaddr() second argument is a size_t only in unix95/unix98 */ 279 #if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) 280 struct hostent *gethostbyaddr(const void *, socklen_t, int); 281 #else 282 struct hostent *gethostbyaddr(const void *, size_t, int); 283 #endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */ 284 285 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 286 int endhostent(void); 287 int endnetent(void); 288 int endprotoent(void); 289 int endservent(void); 290 int sethostent(int); 291 int setnetent(int); 292 int setprotoent(int); 293 int setservent(int); 294 #else 295 void endhostent(void); 296 void endnetent(void); 297 void endprotoent(void); 298 void endservent(void); 299 void sethostent(int); 300 void setnetent(int); 301 void setprotoent(int); 302 void setservent(int); 303 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 304 305 #if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) 306 307 #ifdef _XPG6 308 #ifdef __PRAGMA_REDEFINE_EXTNAME 309 #pragma redefine_extname getaddrinfo __xnet_getaddrinfo 310 #else /* __PRAGMA_REDEFINE_EXTNAME */ 311 #define getaddrinfo __xnet_getaddrinfo 312 #endif /* __PRAGMA_REDEFINE_EXTNAME */ 313 #endif /* _XPG6 */ 314 315 int getaddrinfo(const char *_RESTRICT_KYWD, 316 const char *_RESTRICT_KYWD, 317 const struct addrinfo *_RESTRICT_KYWD, 318 struct addrinfo **_RESTRICT_KYWD); 319 void freeaddrinfo(struct addrinfo *); 320 const char *gai_strerror(int); 321 int getnameinfo(const struct sockaddr *_RESTRICT_KYWD, 322 socklen_t, char *_RESTRICT_KYWD, socklen_t, 323 char *_RESTRICT_KYWD, socklen_t, int); 324 #endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */ 325 326 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 327 int getnetgrent(char **, char **, char **); 328 int setnetgrent(const char *); 329 int endnetgrent(void); 330 int rcmd(char **, unsigned short, 331 const char *, const char *, const char *, int *); 332 int rcmd_af(char **, unsigned short, 333 const char *, const char *, const char *, int *, int); 334 int rresvport_af(int *, int); 335 int rresvport_addr(int *, struct sockaddr_storage *); 336 int rexec(char **, unsigned short, 337 const char *, const char *, const char *, int *); 338 int rexec_af(char **, unsigned short, 339 const char *, const char *, const char *, int *, int); 340 int rresvport(int *); 341 int ruserok(const char *, int, const char *, const char *); 342 /* BIND */ 343 struct hostent *gethostbyname2(const char *, int); 344 void herror(const char *); 345 const char *hstrerror(int); 346 /* End BIND */ 347 348 /* IPsec algorithm prototype definitions */ 349 struct ipsecalgent *getipsecalgbyname(const char *, int, int *); 350 struct ipsecalgent *getipsecalgbynum(int, int, int *); 351 int getipsecprotobyname(const char *doi_name); 352 char *getipsecprotobynum(int doi_domain); 353 void freeipsecalgent(struct ipsecalgent *ptr); 354 /* END IPsec algorithm prototype definitions */ 355 356 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 357 358 /* 359 * Error return codes from gethostbyname() and gethostbyaddr() 360 * (when using the resolver) 361 */ 362 363 extern int h_errno; 364 365 #ifdef _REENTRANT 366 extern int *__h_errno(void); 367 368 /* Only #define h_errno if there is no conflict with other use */ 369 #ifdef H_ERRNO_IS_FUNCTION 370 #define h_errno (*__h_errno()) 371 #endif /* NO_H_ERRNO_DEFINE */ 372 #endif /* _REENTRANT */ 373 374 /* 375 * Error return codes from gethostbyname() and gethostbyaddr() 376 * (left in extern int h_errno). 377 */ 378 #define HOST_NOT_FOUND 1 /* Authoritive Answer Host not found */ 379 #define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 380 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 381 #define NO_DATA 4 /* Valid name, no data record of requested type */ 382 383 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 384 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 385 386 /* BIND */ 387 #define NETDB_INTERNAL -1 /* see errno */ 388 #define NETDB_SUCCESS 0 /* no problem */ 389 /* End BIND */ 390 391 #define MAXHOSTNAMELEN 256 392 393 #define MAXALIASES 35 394 #define MAXADDRS 35 395 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 396 397 #ifdef __cplusplus 398 } 399 #endif 400 401 #endif /* _NETDB_H */ 402