getnetnamadr.c revision 113977 
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#include <sys/cdefs.h>
27__FBSDID("$FreeBSD: head/lib/libc/net/getnetnamadr.c 113977 2003-04-24 18:05:48Z nectar $");
28
29#include "namespace.h"
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#include "un-namespace.h"
41
42extern int _ht_getnetbyname(void *, void *, va_list);
43extern int _dns_getnetbyname(void *, void *, va_list);
44extern int _nis_getnetbyname(void *, void *, va_list);
45extern int _ht_getnetbyaddr(void *, void *, va_list);
46extern int _dns_getnetbyaddr(void *, void *, va_list);
47extern int _nis_getnetbyaddr(void *, void *, va_list);
48
49/* Network lookup order if nsswitch.conf is broken or nonexistant */
50static const ns_src default_src[] = {
51	{ NSSRC_FILES, NS_SUCCESS },
52	{ NSSRC_DNS, NS_SUCCESS },
53	{ 0 }
54};
55
56struct netent *
57getnetbyname(const char *name)
58{
59	struct netent *hp = 0;
60	int rval;
61
62
63	static const ns_dtab dtab[] = {
64		NS_FILES_CB(_ht_getnetbyname, NULL)
65		{ NSSRC_DNS, _dns_getnetbyname, NULL },
66		NS_NIS_CB(_nis_getnetbyname, NULL) /* force -DHESIOD */
67		{ 0 }
68	};
69
70	rval = _nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyname",
71			  default_src, name);
72
73	if (rval != NS_SUCCESS)
74		return NULL;
75	else
76		return hp;
77}
78
79struct netent *
80getnetbyaddr(u_long addr, int af)
81{
82	struct netent *hp = 0;
83	int rval;
84
85	static const ns_dtab dtab[] = {
86		NS_FILES_CB(_ht_getnetbyaddr, NULL)
87		{ NSSRC_DNS, _dns_getnetbyaddr, NULL },
88		NS_NIS_CB(_nis_getnetbyaddr, NULL) /* force -DHESIOD */
89		{ 0 }
90	};
91
92	rval = _nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyaddr",
93			  default_src, addr, af);
94
95	if (rval != NS_SUCCESS)
96		return NULL;
97	else
98		return hp;
99}
100
101void
102setnetent(stayopen)
103	int stayopen;
104{
105	_setnethtent(stayopen);
106	_setnetdnsent(stayopen);
107}
108
109void
110endnetent()
111{
112	_endnethtent();
113	_endnetdnsent();
114}
115