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
40 static nss_status_t
getbyname(be,a)41 getbyname(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
51 static int
check_addr(nss_XbyY_args_t * argp,const char * line,int linelen)52 check_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
88 static nss_status_t
getbyaddr(be,a)89 getbyaddr(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
98 static 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*/
108 nss_backend_t *
_nss_files_networks_constr(dummy1,dummy2,dummy3)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