1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 *
25 * files/getnetent.c -- "files" backend for nsswitch "networks" database
26 */
27
28#pragma ident	"%Z%%M%	%I%	%E% SMI"
29
30
31#include <sys/types.h>
32#include <sys/socket.h>
33#include <netinet/in.h>
34#include <arpa/inet.h>
35#include <netdb.h>
36#include "files_common.h"
37#include <strings.h>
38#include <ctype.h>
39
40static nss_status_t
41getbyname(be, a)
42	files_backend_ptr_t	be;
43	void		*a;
44{
45	nss_XbyY_args_t		*argp = (nss_XbyY_args_t *)a;
46
47	return (_nss_files_XY_all(be, argp, 1, argp->key.name,
48			_nss_files_check_name_aliases));
49}
50
51static int
52check_addr(nss_XbyY_args_t *argp, const char *line, int linelen)
53{
54
55	const char	*limit, *linep, *addrstart;
56	int		addrlen;
57	char		addrbuf[NSS_LINELEN_NETWORKS];
58	in_addr_t	linenet;
59
60	linep = line;
61	limit = line + linelen;
62
63	/* skip network name */
64	while (linep < limit && !isspace(*linep))
65		linep++;
66	/* skip the delimiting spaces */
67	while (linep < limit && isspace(*linep))
68		linep++;
69	if (linep == limit)
70		return (0);
71
72	addrstart = linep;
73	while (linep < limit && !isspace(*linep))
74		linep++;
75	addrlen = linep - addrstart;
76	if (addrlen < sizeof (addrbuf)) {
77		(void) memcpy(addrbuf, addrstart, addrlen);
78		addrbuf[addrlen] = '\0';
79		if ((linenet = inet_network(addrbuf)) ==
80						(in_addr_t)0xffffffffU)
81			return (0);
82		return (AF_INET == argp->key.netaddr.type &&
83			linenet == argp->key.netaddr.net);
84	}
85	return (0);
86}
87
88static nss_status_t
89getbyaddr(be, a)
90	files_backend_ptr_t	be;
91	void		*a;
92{
93	nss_XbyY_args_t		*argp = (nss_XbyY_args_t *)a;
94
95	return (_nss_files_XY_all(be, argp, 1, 0, check_addr));
96}
97
98static files_backend_op_t net_ops[] = {
99	_nss_files_destr,
100	_nss_files_endent,
101	_nss_files_setent,
102	_nss_files_getent_netdb,
103	getbyname,
104	getbyaddr
105};
106
107/*ARGSUSED*/
108nss_backend_t *
109_nss_files_networks_constr(dummy1, dummy2, dummy3)
110	const char  *dummy1, *dummy2, *dummy3;
111{
112	return (_nss_files_constr(net_ops,
113				sizeof (net_ops) / sizeof (net_ops[0]),
114				_PATH_NETWORKS,
115				NSS_LINELEN_NETWORKS,
116				NULL));
117}
118