master
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 * @(#)netdb.h 8.1 (Berkeley) 6/2/93
55 * From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $
56 */
57
58#ifndef _NETDB_H_
59#define _NETDB_H_
60
61#include <sys/cdefs.h>
62#include <sys/_types.h>
63
64#ifndef _IN_ADDR_T_DECLARED
65typedef __uint32_t in_addr_t;
66#define _IN_ADDR_T_DECLARED
67#endif
68
69#ifndef _IN_PORT_T_DECLARED
70typedef __uint16_t in_port_t;
71#define _IN_PORT_T_DECLARED
72#endif
73
74#ifndef _SIZE_T_DECLARED
75typedef __size_t size_t;
76#define _SIZE_T_DECLARED
77#endif
78
79#ifndef _SOCKLEN_T_DECLARED
80typedef __socklen_t socklen_t;
81#define _SOCKLEN_T_DECLARED
82#endif
83
84#ifndef _UINT32_T_DECLARED
85typedef __uint32_t uint32_t;
86#define _UINT32_T_DECLARED
87#endif
88
89#ifndef _PATH_HEQUIV
90# define _PATH_HEQUIV "/etc/hosts.equiv"
91#endif
92#define _PATH_HOSTS "/etc/hosts"
93#define _PATH_NETWORKS "/etc/networks"
94#define _PATH_PROTOCOLS "/etc/protocols"
95#define _PATH_SERVICES "/etc/services"
96#define _PATH_SERVICES_DB "/var/db/services.db"
97
98#define h_errno (*__h_errno())
99
100/*
101 * Structures returned by network data base library. All addresses are
102 * supplied in host order, and returned in network order (suitable for
103 * use in system calls).
104 */
105struct hostent {
106 char *h_name; /* official name of host */
107 char **h_aliases; /* alias list */
108 int h_addrtype; /* host address type */
109 int h_length; /* length of address */
110 char **h_addr_list; /* list of addresses from name server */
111#define h_addr h_addr_list[0] /* address, for backward compatibility */
112};
113
114struct netent {
115 char *n_name; /* official name of net */
116 char **n_aliases; /* alias list */
117 int n_addrtype; /* net address type */
118 uint32_t n_net; /* network # */
119};
120
121struct servent {
122 char *s_name; /* official service name */
123 char **s_aliases; /* alias list */
124 int s_port; /* port # */
125 char *s_proto; /* protocol to use */
126};
127
128struct protoent {
129 char *p_name; /* official protocol name */
130 char **p_aliases; /* alias list */
131 int p_proto; /* protocol # */
132};
133
134struct addrinfo {
135 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
136 int ai_family; /* AF_xxx */
137 int ai_socktype; /* SOCK_xxx */
138 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
139 socklen_t ai_addrlen; /* length of ai_addr */
140 char *ai_canonname; /* canonical name for hostname */
141 struct sockaddr *ai_addr; /* binary address */
142 struct addrinfo *ai_next; /* next structure in linked list */
143};
144
145#define IPPORT_RESERVED 1024
146
147/*
148 * Error return codes from gethostbyname() and gethostbyaddr()
149 * (left in h_errno).
150 */
151
152#define NETDB_INTERNAL -1 /* see errno */
153#define NETDB_SUCCESS 0 /* no problem */
154#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
155#define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
156#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
157#define NO_DATA 4 /* Valid name, no data record of requested type */
158#define NO_ADDRESS NO_DATA /* no address, look for MX record */
159
160/*
161 * Error return codes from gai_strerror(3), see RFC 3493.
162 */
163#if __BSD_VISIBLE /* not in POSIX */
164/* EAI_ADDRFAMILY was obsoleted by RFC 3493, used as extension */
165#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
166#endif
167#define EAI_AGAIN 2 /* name could not be resolved at this time */
168#define EAI_BADFLAGS 3 /* flags parameter had an invalid value */
169#define EAI_FAIL 4 /* non-recoverable failure in name resolution */
170#define EAI_FAMILY 5 /* address family not recognized */
171#define EAI_MEMORY 6 /* memory allocation failure */
172#if __BSD_VISIBLE /* not in POSIX */
173/* EAI_NODATA was obsoleted by RFC 3493, retained here as extension */
174#define EAI_NODATA 7 /* no address associated with hostname */
175#endif
176#define EAI_NONAME 8 /* name does not resolve */
177#define EAI_SERVICE 9 /* service not recognized for socket type */
178#define EAI_SOCKTYPE 10 /* intended socket type was not recognized */
179#define EAI_SYSTEM 11 /* system error returned in errno */
180#if __BSD_VISIBLE /* not in POSIX */
181/* The following 3 are not in RFC 3493 or POSIX, retained for compatibility */
182#define EAI_BADHINTS 12 /* invalid value for hints */
183#define EAI_PROTOCOL 13 /* resolved protocol is unknown */
184#define EAI_OVERFLOW 14 /* argument buffer overflow */
185#endif
186#define EAI_MAX 15
187
188/*
189 * Flag values for getaddrinfo()
190 */
191#define AI_PASSIVE 0x00000001 /* get address to use bind() */
192#define AI_CANONNAME 0x00000002 /* fill ai_canonname */
193#define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */
194#define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */
195/* valid flags for addrinfo (not a standard def, apps should not use it) */
196#define AI_MASK \
197 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \
198 AI_ADDRCONFIG | AI_ALL | AI_V4MAPPED)
199
200#define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
201#define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
202#define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
203#define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
204/* special recommended flags for getipnodebyname */
205#define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
206
207/*
208 * Constants for getnameinfo()
209 */
210#define NI_MAXHOST 1025
211#define NI_MAXSERV 32
212
213/*
214 * Flag values for getnameinfo()
215 */
216#define NI_NOFQDN 0x00000001
217#define NI_NUMERICHOST 0x00000002
218#define NI_NAMEREQD 0x00000004
219#define NI_NUMERICSERV 0x00000008
220#define NI_DGRAM 0x00000010
221#define NI_NUMERICSCOPE 0x00000020
222
223/*
224 * Scope delimit character
225 */
226#define SCOPE_DELIMITER '%'
227
228__BEGIN_DECLS
229void endhostent(void);
230void endnetent(void);
231void endprotoent(void);
232void endservent(void);
233#if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112)
234struct hostent *gethostbyaddr(const void *, socklen_t, int);
235struct hostent *gethostbyname(const char *);
236#endif
237struct hostent *gethostent(void);
238struct netent *getnetbyaddr(uint32_t, int);
239struct netent *getnetbyname(const char *);
240struct netent *getnetent(void);
241struct protoent *getprotobyname(const char *);
242struct protoent *getprotobynumber(int);
243struct protoent *getprotoent(void);
244struct servent *getservbyname(const char *, const char *);
245struct servent *getservbyport(int, const char *);
246struct servent *getservent(void);
247void sethostent(int);
248/* void sethostfile(const char *); */
249void setnetent(int);
250void setprotoent(int);
251int getaddrinfo(const char *, const char *,
252 const struct addrinfo *, struct addrinfo **);
253int getnameinfo(const struct sockaddr *, socklen_t, char *,
254 size_t, char *, size_t, int);
255void freeaddrinfo(struct addrinfo *);
256const char *gai_strerror(int);
257void setservent(int);
258
259#if __BSD_VISIBLE
260void endnetgrent(void);
261void freehostent(struct hostent *);
262int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *,
263 char *, size_t, struct hostent **, int *);
264int gethostbyname_r(const char *, struct hostent *, char *, size_t,
265 struct hostent **, int *);
266struct hostent *gethostbyname2(const char *, int);
267int gethostbyname2_r(const char *, int, struct hostent *, char *,
268 size_t, struct hostent **, int *);
269int gethostent_r(struct hostent *, char *, size_t,
270 struct hostent **, int *);
271struct hostent *getipnodebyaddr(const void *, size_t, int, int *);
272struct hostent *getipnodebyname(const char *, int, int, int *);
273int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t,
274 struct netent**, int *);
275int getnetbyname_r(const char *, struct netent *, char *, size_t,
276 struct netent **, int *);
277int getnetent_r(struct netent *, char *, size_t, struct netent **,
278 int *);
279int getnetgrent(char **, char **, char **);
280int getnetgrent_r(char **, char **, char **, char *, size_t);
281int getprotobyname_r(const char *, struct protoent *, char *,
282 size_t, struct protoent **);
283int getprotobynumber_r(int, struct protoent *, char *, size_t,
284 struct protoent **);
285int getprotoent_r(struct protoent *, char *, size_t,
286 struct protoent **);
287int getservbyname_r(const char *, const char *, struct servent *,
288 char *, size_t, struct servent **);
289int getservbyport_r(int, const char *, struct servent *, char *,
290 size_t, struct servent **);
291int getservent_r(struct servent *, char *, size_t,
292 struct servent **);
293void herror(const char *);
294const char *hstrerror(int);
295int innetgr(const char *, const char *, const char *, const char *);
296void setnetgrent(const char *);
297#endif
298
299
300/*
301 * PRIVATE functions specific to the FreeBSD implementation
302 */
303
304/* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
305int * __h_errno(void);
306__END_DECLS
307
308#endif /* !_NETDB_H_ */