getnetnamadr.c revision 84760 
1/*-
2 * Copyright (c) 1994, Garrett Wollman
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#if defined(LIBC_SCCS) && !defined(lint)
27static char rcsid[] = "$FreeBSD: head/lib/libc/net/getnetnamadr.c 84760 2001-10-10 12:49:53Z ru $";
28#endif /* LIBC_SCCS and not lint */
29
30#include <sys/param.h>
31#include <sys/socket.h>
32#include <netinet/in.h>
33#include <arpa/inet.h>
34#include <netdb.h>
35#include <stdio.h>
36#include <ctype.h>
37#include <string.h>
38#include <stdarg.h>
39#include <nsswitch.h>
40
41extern int _ht_getnetbyname(void *, void *, va_list);
42extern int _dns_getnetbyname(void *, void *, va_list);
43extern int _nis_getnetbyname(void *, void *, va_list);
44extern int _ht_getnetbyaddr(void *, void *, va_list);
45extern int _dns_getnetbyaddr(void *, void *, va_list);
46extern int _nis_getnetbyaddr(void *, void *, va_list);
47
48/* Network lookup order if nsswitch.conf is broken or nonexistant */
49static const ns_src default_src[] = {
50	{ NSSRC_FILES, NS_SUCCESS },
51	{ NSSRC_DNS, NS_SUCCESS },
52	{ 0 }
53};
54
55struct netent *
56getnetbyname(const char *name)
57{
58	struct netent *hp = 0;
59	int rval;
60
61
62	static const ns_dtab dtab[] = {
63		NS_FILES_CB(_ht_getnetbyname, NULL)
64		{ NSSRC_DNS, _dns_getnetbyname, NULL },
65		NS_NIS_CB(_nis_getnetbyname, NULL) /* force -DHESIOD */
66		{ 0 }
67	};
68
69	rval = nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyname",
70			  default_src, name);
71
72	if (rval != NS_SUCCESS)
73		return NULL;
74	else
75		return hp;
76}
77
78struct netent *
79getnetbyaddr(u_long addr, int af)
80{
81	struct netent *hp = 0;
82	int rval;
83
84	static const ns_dtab dtab[] = {
85		NS_FILES_CB(_ht_getnetbyaddr, NULL)
86		{ NSSRC_DNS, _dns_getnetbyaddr, NULL },
87		NS_NIS_CB(_nis_getnetbyaddr, NULL) /* force -DHESIOD */
88		{ 0 }
89	};
90
91	rval = nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyaddr",
92			  default_src, addr, af);
93
94	if (rval != NS_SUCCESS)
95		return NULL;
96	else
97		return hp;
98}
99
100void
101setnetent(stayopen)
102	int stayopen;
103{
104	_setnethtent(stayopen);
105	_setnetdnsent(stayopen);
106}
107
108void
109endnetent()
110{
111	_endnethtent();
112	_endnetdnsent();
113}
114