1/*-
2 * Copyright (c) 1980, 1983, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * -
34 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
35 *
36 * Permission to use, copy, modify, and distribute this software for any
37 * purpose with or without fee is hereby granted, provided that the above
38 * copyright notice and this permission notice appear in all copies, and that
39 * the name of Digital Equipment Corporation not be used in advertising or
40 * publicity pertaining to distribution of the document or software without
41 * specific, written prior permission.
42 *
43 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
44 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
45 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
46 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
47 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
48 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
49 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
50 * SOFTWARE.
51 * -
52 * --Copyright--
53 */
54
55/*
56 * @(#)netdb.h 8.1 (Berkeley) 6/2/93
57 * From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $
58 * $FreeBSD: head/include/netdb.h 121316 2003-10-21 20:11:47Z ume $
59 */
60
61#ifndef _NETDB_H_
62#define _NETDB_H_
63
64#include <sys/cdefs.h>
65#include <sys/_types.h>
66
67#ifndef _SIZE_T_DECLARED
68typedef __size_t size_t;
69#define _SIZE_T_DECLARED
70#endif
71
72#ifndef _SOCKLEN_T_DECLARED
73typedef __socklen_t socklen_t;
74#define _SOCKLEN_T_DECLARED
75#endif
76
77#ifndef _PATH_HEQUIV
78# define _PATH_HEQUIV "/etc/hosts.equiv"
79#endif
80#define _PATH_HOSTS "/etc/hosts"
81#define _PATH_NETWORKS "/etc/networks"
82#define _PATH_PROTOCOLS "/etc/protocols"
83#define _PATH_SERVICES "/etc/services"
84
85extern int h_errno;
86
87/*
88 * Structures returned by network data base library. All addresses are
89 * supplied in host order, and returned in network order (suitable for
90 * use in system calls).
91 */
92struct hostent {
93 char *h_name; /* official name of host */
94 char **h_aliases; /* alias list */
95 int h_addrtype; /* host address type */
96 int h_length; /* length of address */
97 char **h_addr_list; /* list of addresses from name server */
98#define h_addr h_addr_list[0] /* address, for backward compatibility */
99};
100
101/*
102 * Assumption here is that a network number
103 * fits in an unsigned long -- probably a poor one.
104 */
105struct netent {
106 char *n_name; /* official name of net */
107 char **n_aliases; /* alias list */
108 int n_addrtype; /* net address type */
109 unsigned long n_net; /* network # */
110};
111
112struct servent {
113 char *s_name; /* official service name */
114 char **s_aliases; /* alias list */
115 int s_port; /* port # */
116 char *s_proto; /* protocol to use */
117};
118
119struct protoent {
120 char *p_name; /* official protocol name */
121 char **p_aliases; /* alias list */
122 int p_proto; /* protocol # */
123};
124
125struct addrinfo {
126 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
127 int ai_family; /* PF_xxx */
128 int ai_socktype; /* SOCK_xxx */
129 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
130 size_t ai_addrlen; /* length of ai_addr */
131 char *ai_canonname; /* canonical name for hostname */
132 struct sockaddr *ai_addr; /* binary address */
133 struct addrinfo *ai_next; /* next structure in linked list */
134};
135
136/*
137 * Error return codes from gethostbyname() and gethostbyaddr()
138 * (left in extern int h_errno).
139 */
140
141#define NETDB_INTERNAL -1 /* see errno */
142#define NETDB_SUCCESS 0 /* no problem */
143#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
144#define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
145#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
146#define NO_DATA 4 /* Valid name, no data record of requested type */
147#define NO_ADDRESS NO_DATA /* no address, look for MX record */
148
149/*
150 * Error return codes from getaddrinfo()
151 */
152#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
153#define EAI_AGAIN 2 /* temporary failure in name resolution */
154#define EAI_BADFLAGS 3 /* invalid value for ai_flags */
155#define EAI_FAIL 4 /* non-recoverable failure in name resolution */
156#define EAI_FAMILY 5 /* ai_family not supported */
157#define EAI_MEMORY 6 /* memory allocation failure */
158#define EAI_NODATA 7 /* no address associated with hostname */
159#define EAI_NONAME 8 /* hostname nor servname provided, or not known */
160#define EAI_SERVICE 9 /* servname not supported for ai_socktype */
161#define EAI_SOCKTYPE 10 /* ai_socktype not supported */
162#define EAI_SYSTEM 11 /* system error returned in errno */
163#define EAI_BADHINTS 12
164#define EAI_PROTOCOL 13
165#define EAI_MAX 14
166
167/*
168 * Flag values for getaddrinfo()
169 */
170#define AI_PASSIVE 0x00000001 /* get address to use bind() */
171#define AI_CANONNAME 0x00000002 /* fill ai_canonname */
172#define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
173/* valid flags for addrinfo */
174#define AI_MASK \
175 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_ADDRCONFIG)
176
177#define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
178#define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
179#define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
180#define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
181/* special recommended flags for getipnodebyname */
182#define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
183
184/*
185 * Constants for getnameinfo()
186 */
187#define NI_MAXHOST 1025
188#define NI_MAXSERV 32
189
190/*
191 * Flag values for getnameinfo()
192 */
193#define NI_NOFQDN 0x00000001
194#define NI_NUMERICHOST 0x00000002
195#define NI_NAMEREQD 0x00000004
196#define NI_NUMERICSERV 0x00000008
197#define NI_DGRAM 0x00000010
198#if 1 /* obsolete */
199#define NI_WITHSCOPEID 0x00000020
200#endif
201
202/*
203 * Scope delimit character
204 */
205#define SCOPE_DELIMITER '%'
206
207__BEGIN_DECLS
208void endhostent(void);
209void endnetent(void);
210void endnetgrent(void);
211void endprotoent(void);
212void endservent(void);
213void freehostent(struct hostent *);
214struct hostent *gethostbyaddr(const char *, int, int);
215struct hostent *gethostbyname(const char *);
216struct hostent *gethostbyname2(const char *, int);
217struct hostent *gethostent(void);
218struct hostent *getipnodebyaddr(const void *, size_t, int, int *);
219struct hostent *getipnodebyname(const char *, int, int, int *);
220struct netent *getnetbyaddr(unsigned long, int);
221struct netent *getnetbyname(const char *);
222struct netent *getnetent(void);
223int getnetgrent(char **, char **, char **);
224struct protoent *getprotobyname(const char *);
225struct protoent *getprotobynumber(int);
226struct protoent *getprotoent(void);
227struct servent *getservbyname(const char *, const char *);
228struct servent *getservbyport(int, const char *);
229struct servent *getservent(void);
230void herror(const char *);
231__const char *hstrerror(int);
232int innetgr(const char *, const char *, const char *, const char *);
233void sethostent(int);
234/* void sethostfile(const char *); */
235void setnetent(int);
236void setprotoent(int);
237int getaddrinfo(const char *, const char *,
238 const struct addrinfo *, struct addrinfo **);
239int getnameinfo(const struct sockaddr *, socklen_t, char *,
240 size_t, char *, size_t, int);
241void freeaddrinfo(struct addrinfo *);
242char *gai_strerror(int);
243void setnetgrent(const char *);
244void setservent(int);
245
246/*
247 * PRIVATE functions specific to the FreeBSD implementation
248 */
249
250/* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
251void _sethosthtent(int);
252void _endhosthtent(void);
253void _sethostdnsent(int);
254void _endhostdnsent(void);
255void _setnethtent(int);
256void _endnethtent(void);
257void _setnetdnsent(int);
258void _endnetdnsent(void);
259struct hostent * _gethostbynisname(const char *, int);
260struct hostent * _gethostbynisaddr(const char *, int, int);
261void _map_v4v6_address(const char *, char *);
262void _map_v4v6_hostent(struct hostent *, char **, char **);
263__END_DECLS
264
265#endif /* !_NETDB_H_ */