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 */