1/*-
2 * SPDX-License-Identifier: (BSD-3-Clause AND ISC)
3 *
4 * Copyright (c) 1980, 1983, 1988, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
18 *
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
29 * SUCH DAMAGE.
30 *
31 * -
32 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
33 *
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.
40 *
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
48 * SOFTWARE.
49 * -
50 * --Copyright--
51 */
52
53/*
54 * From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $
55 */
56
57#ifndef _NETDB_H_
58#define _NETDB_H_
59
60#include <sys/cdefs.h>
61#include <sys/_types.h>
62
63#ifndef _IN_ADDR_T_DECLARED
64typedef __uint32_t in_addr_t;
65#define _IN_ADDR_T_DECLARED
66#endif
67
68#ifndef _IN_PORT_T_DECLARED
69typedef __uint16_t in_port_t;
70#define _IN_PORT_T_DECLARED
71#endif
72
73#ifndef _SIZE_T_DECLARED
74typedef __size_t size_t;
75#define _SIZE_T_DECLARED
76#endif
77
78#ifndef _SOCKLEN_T_DECLARED
79typedef __socklen_t socklen_t;
80#define _SOCKLEN_T_DECLARED
81#endif
82
83#ifndef _UINT32_T_DECLARED
84typedef __uint32_t uint32_t;
85#define _UINT32_T_DECLARED
86#endif
87
88#ifndef _PATH_HEQUIV
89# define _PATH_HEQUIV "/etc/hosts.equiv"
90#endif
91#define _PATH_HOSTS "/etc/hosts"
92#define _PATH_NETWORKS "/etc/networks"
93#define _PATH_PROTOCOLS "/etc/protocols"
94#define _PATH_SERVICES "/etc/services"
95#define _PATH_SERVICES_DB "/var/db/services.db"
96
97#define h_errno (*__h_errno())
98
99/*
100 * Structures returned by network data base library. All addresses are
101 * supplied in host order, and returned in network order (suitable for
102 * use in system calls).
103 */
104struct hostent {
105 char *h_name; /* official name of host */
106 char **h_aliases; /* alias list */
107 int h_addrtype; /* host address type */
108 int h_length; /* length of address */
109 char **h_addr_list; /* list of addresses from name server */
110#define h_addr h_addr_list[0] /* address, for backward compatibility */
111};
112
113struct netent {
114 char *n_name; /* official name of net */
115 char **n_aliases; /* alias list */
116 int n_addrtype; /* net address type */
117 uint32_t n_net; /* network # */
118};
119
120struct servent {
121 char *s_name; /* official service name */
122 char **s_aliases; /* alias list */
123 int s_port; /* port # */
124 char *s_proto; /* protocol to use */
125};
126
127struct protoent {
128 char *p_name; /* official protocol name */
129 char **p_aliases; /* alias list */
130 int p_proto; /* protocol # */
131};
132
133struct addrinfo {
134 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
135 int ai_family; /* AF_xxx */
136 int ai_socktype; /* SOCK_xxx */
137 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
138 socklen_t ai_addrlen; /* length of ai_addr */
139 char *ai_canonname; /* canonical name for hostname */
140 struct sockaddr *ai_addr; /* binary address */
141 struct addrinfo *ai_next; /* next structure in linked list */
142};
143
144#define IPPORT_RESERVED 1024
145
146/*
147 * Error return codes from gethostbyname() and gethostbyaddr()
148 * (left in 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-Authoritative 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/*
160 * Error return codes from gai_strerror(3), see RFC 3493.
161 */
162#if __BSD_VISIBLE /* not in POSIX */
163/* EAI_ADDRFAMILY was obsoleted by RFC 3493, used as extension */
164#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
165#endif
166#define EAI_AGAIN 2 /* name could not be resolved at this time */
167#define EAI_BADFLAGS 3 /* flags parameter had an invalid value */
168#define EAI_FAIL 4 /* non-recoverable failure in name resolution */
169#define EAI_FAMILY 5 /* address family not recognized */
170#define EAI_MEMORY 6 /* memory allocation failure */
171#if __BSD_VISIBLE /* not in POSIX */
172/* EAI_NODATA was obsoleted by RFC 3493, retained here as extension */
173#define EAI_NODATA 7 /* no address associated with hostname */
174#endif
175#define EAI_NONAME 8 /* name does not resolve */
176#define EAI_SERVICE 9 /* service not recognized for socket type */
177#define EAI_SOCKTYPE 10 /* intended socket type was not recognized */
178#define EAI_SYSTEM 11 /* system error returned in errno */
179#if __BSD_VISIBLE /* not in POSIX */
180/* The following 3 are not in RFC 3493 or POSIX, retained for compatibility */
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 */
184#endif
185#define EAI_MAX 15
186
187/*
188 * Flag values for getaddrinfo()
189 */
190#define AI_PASSIVE 0x00000001 /* get address to use bind() */
191#define AI_CANONNAME 0x00000002 /* fill ai_canonname */
192#define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */
193#define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */
194/* valid flags for addrinfo (not a standard def, apps should not use it) */
195#define AI_MASK \
196 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \
197 AI_ADDRCONFIG | AI_ALL | AI_V4MAPPED)
198
199#define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
200#define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
201#define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
202#define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
203/* special recommended flags for getipnodebyname */
204#define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
205
206/*
207 * Constants for getnameinfo()
208 */
209#define NI_MAXHOST 1025
210#define NI_MAXSERV 32
211
212/*
213 * Flag values for getnameinfo()
214 */
215#define NI_NOFQDN 0x00000001
216#define NI_NUMERICHOST 0x00000002
217#define NI_NAMEREQD 0x00000004
218#define NI_NUMERICSERV 0x00000008
219#define NI_DGRAM 0x00000010
220#define NI_NUMERICSCOPE 0x00000020
221
222/*
223 * Scope delimit character
224 */
225#define SCOPE_DELIMITER '%'
226
227__BEGIN_DECLS
228void endhostent(void);
229void endnetent(void);
230void endprotoent(void);
231void endservent(void);
232#if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112)
233struct hostent *gethostbyaddr(const void *, socklen_t, int);
234struct hostent *gethostbyname(const char *);
235#endif
236struct hostent *gethostent(void);
237struct netent *getnetbyaddr(uint32_t, int);
238struct netent *getnetbyname(const char *);
239struct netent *getnetent(void);
240struct protoent *getprotobyname(const char *);
241struct protoent *getprotobynumber(int);
242struct protoent *getprotoent(void);
243struct servent *getservbyname(const char *, const char *);
244struct servent *getservbyport(int, const char *);
245struct servent *getservent(void);
246void sethostent(int);
247/* void sethostfile(const char *); */
248void setnetent(int);
249void setprotoent(int);
250int getaddrinfo(const char *, const char *,
251 const struct addrinfo *, struct addrinfo **);
252int getnameinfo(const struct sockaddr *, socklen_t, char *,
253 size_t, char *, size_t, int);
254void freeaddrinfo(struct addrinfo *);
255const char *gai_strerror(int);
256void setservent(int);
257
258#if __BSD_VISIBLE
259void endnetgrent(void);
260void freehostent(struct hostent *);
261int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *,
262 char *, size_t, struct hostent **, int *);
263int gethostbyname_r(const char *, struct hostent *, char *, size_t,
264 struct hostent **, int *);
265struct hostent *gethostbyname2(const char *, int);
266int gethostbyname2_r(const char *, int, struct hostent *, char *,
267 size_t, struct hostent **, int *);
268int gethostent_r(struct hostent *, char *, size_t,
269 struct hostent **, int *);
270struct hostent *getipnodebyaddr(const void *, size_t, int, int *);
271struct hostent *getipnodebyname(const char *, int, int, int *);
272int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t,
273 struct netent**, int *);
274int getnetbyname_r(const char *, struct netent *, char *, size_t,
275 struct netent **, int *);
276int getnetent_r(struct netent *, char *, size_t, struct netent **,
277 int *);
278int getnetgrent(char **, char **, char **);
279int getnetgrent_r(char **, char **, char **, char *, size_t);
280int getprotobyname_r(const char *, struct protoent *, char *,
281 size_t, struct protoent **);
282int getprotobynumber_r(int, struct protoent *, char *, size_t,
283 struct protoent **);
284int getprotoent_r(struct protoent *, char *, size_t,
285 struct protoent **);
286int getservbyname_r(const char *, const char *, struct servent *,
287 char *, size_t, struct servent **);
288int getservbyport_r(int, const char *, struct servent *, char *,
289 size_t, struct servent **);
290int getservent_r(struct servent *, char *, size_t,
291 struct servent **);
292void herror(const char *);
293const char *hstrerror(int);
294int innetgr(const char *, const char *, const char *, const char *);
295void setnetgrent(const char *);
296#endif
297
298
299/*
300 * PRIVATE functions specific to the FreeBSD implementation
301 */
302
303/* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
304int * __h_errno(void);
305__END_DECLS
306
307#endif /* !_NETDB_H_ */