2 * SPDX-License-Identifier: (BSD-3-Clause AND ISC)
4 * Copyright (c) 1980, 1983, 1988, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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 University 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.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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
32 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
34 * Permission to use, copy, modify, and distribute this software for any
35 * purpose with or without fee is hereby granted, provided that the above
36 * copyright notice and this permission notice appear in all copies, and that
37 * the name of Digital Equipment Corporation not be used in advertising or
38 * publicity pertaining to distribution of the document or software without
39 * specific, written prior permission.
41 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
42 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
43 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
44 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
45 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
46 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
47 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
54 * @(#)netdb.h 8.1 (Berkeley) 6/2/93
55 * From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $
62 #include <sys/cdefs.h>
63 #include <sys/_types.h>
65 #ifndef _IN_ADDR_T_DECLARED
66 typedef __uint32_t in_addr_t;
67 #define _IN_ADDR_T_DECLARED
70 #ifndef _IN_PORT_T_DECLARED
71 typedef __uint16_t in_port_t;
72 #define _IN_PORT_T_DECLARED
75 #ifndef _SIZE_T_DECLARED
76 typedef __size_t size_t;
77 #define _SIZE_T_DECLARED
80 #ifndef _SOCKLEN_T_DECLARED
81 typedef __socklen_t socklen_t;
82 #define _SOCKLEN_T_DECLARED
85 #ifndef _UINT32_T_DECLARED
86 typedef __uint32_t uint32_t;
87 #define _UINT32_T_DECLARED
91 # define _PATH_HEQUIV "/etc/hosts.equiv"
93 #define _PATH_HOSTS "/etc/hosts"
94 #define _PATH_NETWORKS "/etc/networks"
95 #define _PATH_PROTOCOLS "/etc/protocols"
96 #define _PATH_SERVICES "/etc/services"
97 #define _PATH_SERVICES_DB "/var/db/services.db"
99 #define h_errno (*__h_errno())
102 * Structures returned by network data base library. All addresses are
103 * supplied in host order, and returned in network order (suitable for
104 * use in system calls).
107 char *h_name; /* official name of host */
108 char **h_aliases; /* alias list */
109 int h_addrtype; /* host address type */
110 int h_length; /* length of address */
111 char **h_addr_list; /* list of addresses from name server */
112 #define h_addr h_addr_list[0] /* address, for backward compatibility */
116 char *n_name; /* official name of net */
117 char **n_aliases; /* alias list */
118 int n_addrtype; /* net address type */
119 uint32_t n_net; /* network # */
123 char *s_name; /* official service name */
124 char **s_aliases; /* alias list */
125 int s_port; /* port # */
126 char *s_proto; /* protocol to use */
130 char *p_name; /* official protocol name */
131 char **p_aliases; /* alias list */
132 int p_proto; /* protocol # */
136 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
137 int ai_family; /* AF_xxx */
138 int ai_socktype; /* SOCK_xxx */
139 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
140 socklen_t ai_addrlen; /* length of ai_addr */
141 char *ai_canonname; /* canonical name for hostname */
142 struct sockaddr *ai_addr; /* binary address */
143 struct addrinfo *ai_next; /* next structure in linked list */
146 #define IPPORT_RESERVED 1024
149 * Error return codes from gethostbyname() and gethostbyaddr()
153 #define NETDB_INTERNAL -1 /* see errno */
154 #define NETDB_SUCCESS 0 /* no problem */
155 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
156 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
157 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
158 #define NO_DATA 4 /* Valid name, no data record of requested type */
159 #define NO_ADDRESS NO_DATA /* no address, look for MX record */
162 * Error return codes from gai_strerror(3), see RFC 3493.
165 /* Obsoleted on RFC 2553bis-02 */
166 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
168 #define EAI_AGAIN 2 /* name could not be resolved at this time */
169 #define EAI_BADFLAGS 3 /* flags parameter had an invalid value */
170 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
171 #define EAI_FAMILY 5 /* address family not recognized */
172 #define EAI_MEMORY 6 /* memory allocation failure */
174 /* Obsoleted on RFC 2553bis-02 */
175 #define EAI_NODATA 7 /* no address associated with hostname */
177 #define EAI_NONAME 8 /* name does not resolve */
178 #define EAI_SERVICE 9 /* service not recognized for socket type */
179 #define EAI_SOCKTYPE 10 /* intended socket type was not recognized */
180 #define EAI_SYSTEM 11 /* system error returned in errno */
181 #define EAI_BADHINTS 12 /* invalid value for hints */
182 #define EAI_PROTOCOL 13 /* resolved protocol is unknown */
183 #define EAI_OVERFLOW 14 /* argument buffer overflow */
187 * Flag values for getaddrinfo()
189 #define AI_PASSIVE 0x00000001 /* get address to use bind() */
190 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */
191 #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */
192 #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */
193 /* valid flags for addrinfo (not a standard def, apps should not use it) */
195 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \
196 AI_ADDRCONFIG | AI_ALL | AI_V4MAPPED)
198 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
199 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
200 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
201 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
202 /* special recommended flags for getipnodebyname */
203 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
206 * Constants for getnameinfo()
208 #define NI_MAXHOST 1025
209 #define NI_MAXSERV 32
212 * Flag values for getnameinfo()
214 #define NI_NOFQDN 0x00000001
215 #define NI_NUMERICHOST 0x00000002
216 #define NI_NAMEREQD 0x00000004
217 #define NI_NUMERICSERV 0x00000008
218 #define NI_DGRAM 0x00000010
219 #define NI_NUMERICSCOPE 0x00000020
222 * Scope delimit character
224 #define SCOPE_DELIMITER '%'
227 void endhostent(void);
228 void endnetent(void);
229 void endprotoent(void);
230 void endservent(void);
231 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112)
232 struct hostent *gethostbyaddr(const void *, socklen_t, int);
233 struct hostent *gethostbyname(const char *);
235 struct hostent *gethostent(void);
236 struct netent *getnetbyaddr(uint32_t, int);
237 struct netent *getnetbyname(const char *);
238 struct netent *getnetent(void);
239 struct protoent *getprotobyname(const char *);
240 struct protoent *getprotobynumber(int);
241 struct protoent *getprotoent(void);
242 struct servent *getservbyname(const char *, const char *);
243 struct servent *getservbyport(int, const char *);
244 struct servent *getservent(void);
245 void sethostent(int);
246 /* void sethostfile(const char *); */
248 void setprotoent(int);
249 int getaddrinfo(const char *, const char *,
250 const struct addrinfo *, struct addrinfo **);
251 int getnameinfo(const struct sockaddr *, socklen_t, char *,
252 size_t, char *, size_t, int);
253 void freeaddrinfo(struct addrinfo *);
254 const char *gai_strerror(int);
255 void setservent(int);
258 void endnetgrent(void);
259 void freehostent(struct hostent *);
260 int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *,
261 char *, size_t, struct hostent **, int *);
262 int gethostbyname_r(const char *, struct hostent *, char *, size_t,
263 struct hostent **, int *);
264 struct hostent *gethostbyname2(const char *, int);
265 int gethostbyname2_r(const char *, int, struct hostent *, char *,
266 size_t, struct hostent **, int *);
267 int gethostent_r(struct hostent *, char *, size_t,
268 struct hostent **, int *);
269 struct hostent *getipnodebyaddr(const void *, size_t, int, int *);
270 struct hostent *getipnodebyname(const char *, int, int, int *);
271 int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t,
272 struct netent**, int *);
273 int getnetbyname_r(const char *, struct netent *, char *, size_t,
274 struct netent **, int *);
275 int getnetent_r(struct netent *, char *, size_t, struct netent **,
277 int getnetgrent(char **, char **, char **);
278 int getnetgrent_r(char **, char **, char **, char *, size_t);
279 int getprotobyname_r(const char *, struct protoent *, char *,
280 size_t, struct protoent **);
281 int getprotobynumber_r(int, struct protoent *, char *, size_t,
283 int getprotoent_r(struct protoent *, char *, size_t,
285 int getservbyname_r(const char *, const char *, struct servent *,
286 char *, size_t, struct servent **);
287 int getservbyport_r(int, const char *, struct servent *, char *,
288 size_t, struct servent **);
289 int getservent_r(struct servent *, char *, size_t,
291 void herror(const char *);
292 const char *hstrerror(int);
293 int innetgr(const char *, const char *, const char *, const char *);
294 void setnetgrent(const char *);
299 * PRIVATE functions specific to the FreeBSD implementation
302 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
303 int * __h_errno(void);
306 #endif /* !_NETDB_H_ */