netdb.h revision f173325ac850b1859902fe746462676d9c731e7a
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 *      @(#)netdb.h	8.1 (Berkeley) 6/2/93
34 *      From: Id: netdb.h,v 8.7 1996/05/09 05:59:09 vixie Exp
35 *	$Id$
36 * -
37 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
38 *
39 * Permission to use, copy, modify, and distribute this software for any
40 * purpose with or without fee is hereby granted, provided that the above
41 * copyright notice and this permission notice appear in all copies, and that
42 * the name of Digital Equipment Corporation not be used in advertising or
43 * publicity pertaining to distribution of the document or software without
44 * specific, written prior permission.
45 *
46 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
47 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
49 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
50 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
51 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
52 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
53 * SOFTWARE.
54 * -
55 * --Copyright--
56 */
57
58#ifndef _NETDB_H_
59#define _NETDB_H_
60
61#include <sys/cdefs.h>
62
63#define	_PATH_HEQUIV	"/etc/hosts.equiv"
64#define	_PATH_HOSTS	"/etc/hosts"
65#define	_PATH_NETWORKS	"/etc/networks"
66#define	_PATH_PROTOCOLS	"/etc/protocols"
67#define	_PATH_SERVICES	"/etc/services"
68
69extern int h_errno;
70
71/*
72 * Structures returned by network data base library.  All addresses are
73 * supplied in host order, and returned in network order (suitable for
74 * use in system calls).
75 */
76struct	hostent {
77	char	*h_name;	/* official name of host */
78	char	**h_aliases;	/* alias list */
79	int	h_addrtype;	/* host address type */
80	int	h_length;	/* length of address */
81	char	**h_addr_list;	/* list of addresses from name server */
82#define	h_addr	h_addr_list[0]	/* address, for backward compatibility */
83};
84
85/*
86 * Assumption here is that a network number
87 * fits in an unsigned long -- probably a poor one.
88 */
89struct	netent {
90	char		*n_name;	/* official name of net */
91	char		**n_aliases;	/* alias list */
92	int		n_addrtype;	/* net address type */
93	unsigned long	n_net;		/* network # */
94};
95
96struct	servent {
97	char	*s_name;	/* official service name */
98	char	**s_aliases;	/* alias list */
99	int	s_port;		/* port # */
100	char	*s_proto;	/* protocol to use */
101};
102
103struct	protoent {
104	char	*p_name;	/* official protocol name */
105	char	**p_aliases;	/* alias list */
106	int	p_proto;	/* protocol # */
107};
108
109/*
110 * Error return codes from gethostbyname() and gethostbyaddr()
111 * (left in extern int h_errno).
112 */
113
114#define	NETDB_INTERNAL	-1	/* see errno */
115#define	NETDB_SUCCESS	0	/* no problem */
116#define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
117#define	TRY_AGAIN	2 /* Non-Authoritative Host not found, or SERVERFAIL */
118#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
119#define	NO_DATA		4 /* Valid name, no data record of requested type */
120#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
121
122__BEGIN_DECLS
123void		endhostent __P((void));
124void		endnetent __P((void));
125void		endprotoent __P((void));
126void		endservent __P((void));
127struct hostent	*gethostbyaddr __P((const char *, int, int));
128struct hostent	*gethostbyname __P((const char *));
129struct hostent	*gethostbyname2 __P((const char *, int));
130struct hostent	*gethostent __P((void));
131struct netent	*getnetbyaddr __P((unsigned long, int));
132struct netent	*getnetbyname __P((const char *));
133struct netent	*getnetent __P((void));
134struct protoent	*getprotobyname __P((const char *));
135struct protoent	*getprotobynumber __P((int));
136struct protoent	*getprotoent __P((void));
137struct servent	*getservbyname __P((const char *, const char *));
138struct servent	*getservbyport __P((int, const char *));
139struct servent	*getservent __P((void));
140void		herror __P((const char *));
141const char	*hstrerror __P((int));
142void		sethostent __P((int));
143/* void		sethostfile __P((const char *)); */
144void		setnetent __P((int));
145void		setprotoent __P((int));
146void		setservent __P((int));
147
148/*
149 * PRIVATE functions specific to the FreeBSD implementation
150 */
151
152/* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
153void	_sethosthtent __P((int));
154void	_endhosthtent __P((void));
155void	_sethostdnsent __P((int));
156void	_endhostdnsent __P((void));
157void	_setnethtent __P((int));
158void	_endnethtent __P((void));
159void	_setnetdnsent __P((int));
160void	_endnetdnsent __P((void));
161struct hostent * _gethostbyhtname  __P((const char *, int));
162struct hostent * _gethostbydnsname __P((const char *, int));
163struct hostent * _gethostbynisname __P((const char *, int));
164struct hostent * _gethostbyhtaddr  __P((const char *, int, int));
165struct hostent * _gethostbydnsaddr __P((const char *, int, int));
166struct hostent * _gethostbynisaddr __P((const char *, int, int));
167struct netent *  _getnetbyhtname  __P((const char *));
168struct netent *  _getnetbydnsname __P((const char *));
169struct netent *  _getnetbynisname __P((const char *));
170struct netent *  _getnetbyhtaddr  __P((unsigned long, int));
171struct netent *  _getnetbydnsaddr __P((unsigned long, int));
172struct netent *  _getnetbynisaddr __P((unsigned long, int));
173void _map_v4v6_address __P((const char *src, char *dst));
174void _map_v4v6_hostent __P((struct hostent *hp, char **bp, int *len));
175__END_DECLS
176
177#endif /* !_NETDB_H_ */
178