netdb.h revision 2dd1919d1c22bd3dc75ab1064352572d401b1ab9
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 *	$Id: netdb.h,v 1.2 1995/05/30 04:54:41 rgrimes Exp $
35 * -
36 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
37 *
38 * Permission to use, copy, modify, and distribute this software for any
39 * purpose with or without fee is hereby granted, provided that the above
40 * copyright notice and this permission notice appear in all copies, and that
41 * the name of Digital Equipment Corporation not be used in advertising or
42 * publicity pertaining to distribution of the document or software without
43 * specific, written prior permission.
44 *
45 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
46 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
47 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
48 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
49 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
50 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
51 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
52 * SOFTWARE.
53 * -
54 * --Copyright--
55 */
56
57#ifndef _NETDB_H_
58#define _NETDB_H_
59
60#define	_PATH_HEQUIV	"/etc/hosts.equiv"
61#define	_PATH_HOSTS	"/etc/hosts"
62#define	_PATH_NETWORKS	"/etc/networks"
63#define	_PATH_PROTOCOLS	"/etc/protocols"
64#define	_PATH_SERVICES	"/etc/services"
65
66extern int h_errno;
67
68/*
69 * Structures returned by network data base library.  All addresses are
70 * supplied in host order, and returned in network order (suitable for
71 * use in system calls).
72 */
73struct	hostent {
74	char	*h_name;	/* official name of host */
75	char	**h_aliases;	/* alias list */
76	int	h_addrtype;	/* host address type */
77	int	h_length;	/* length of address */
78	char	**h_addr_list;	/* list of addresses from name server */
79#define	h_addr	h_addr_list[0]	/* address, for backward compatiblity */
80};
81
82/*
83 * Assumption here is that a network number
84 * fits in an unsigned long -- probably a poor one.
85 */
86struct	netent {
87	char		*n_name;	/* official name of net */
88	char		**n_aliases;	/* alias list */
89	int		n_addrtype;	/* net address type */
90	unsigned long	n_net;		/* network # */
91};
92
93struct	servent {
94	char	*s_name;	/* official service name */
95	char	**s_aliases;	/* alias list */
96	int	s_port;		/* port # */
97	char	*s_proto;	/* protocol to use */
98};
99
100struct	protoent {
101	char	*p_name;	/* official protocol name */
102	char	**p_aliases;	/* alias list */
103	int	p_proto;	/* protocol # */
104};
105
106/*
107 * Error return codes from gethostbyname() and gethostbyaddr()
108 * (left in extern int h_errno).
109 */
110
111#define	NETDB_INTERNAL	-1	/* see errno */
112#define	NETDB_SUCCESS	0	/* no problem */
113#define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
114#define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
115#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
116#define	NO_DATA		4 /* Valid name, no data record of requested type */
117#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
118
119#include <sys/cdefs.h>
120
121__BEGIN_DECLS
122void		endhostent __P((void));
123void		endnetent __P((void));
124void		endprotoent __P((void));
125void		endservent __P((void));
126struct hostent	*gethostbyaddr __P((const char *, int, int));
127struct hostent	*gethostbyname __P((const char *));
128struct hostent	*gethostent __P((void));
129struct netent	*getnetbyaddr __P((long, int)); /* u_long? */
130struct netent	*getnetbyname __P((const char *));
131struct netent	*getnetent __P((void));
132struct protoent	*getprotobyname __P((const char *));
133struct protoent	*getprotobynumber __P((int));
134struct protoent	*getprotoent __P((void));
135struct servent	*getservbyname __P((const char *, const char *));
136struct servent	*getservbyport __P((int, const char *));
137struct servent	*getservent __P((void));
138void		herror __P((const char *));
139const char	*hstrerror __P((int));
140void		sethostent __P((int));
141/* void		sethostfile __P((const char *)); */
142void		setnetent __P((int));
143void		setprotoent __P((int));
144void		setservent __P((int));
145__END_DECLS
146
147#endif /* !_NETDB_H_ */
148