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 #include <sys/types.h>
29 #include <sys/socket.h>
30 #include <netinet/in.h>
31 #include <arpa/inet.h>
32 #include <netdb.h>
33 #include "files_common.h"
34 #include <strings.h>
35 #include <ctype.h>
36
37 static nss_status_t
getbyname(be,a)38 getbyname(be, a)
39 files_backend_ptr_t be;
40 void *a;
41 {
42 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
43
44 return (_nss_files_XY_all(be, argp, 1, argp->key.name,
45 _nss_files_check_name_aliases));
46 }
47
48 static int
check_addr(nss_XbyY_args_t * argp,const char * line,int linelen)49 check_addr(nss_XbyY_args_t *argp, const char *line, int linelen)
50 {
51
52 const char *limit, *linep, *addrstart;
53 int addrlen;
54 char addrbuf[NSS_LINELEN_NETWORKS];
55 in_addr_t linenet;
56
57 linep = line;
58 limit = line + linelen;
59
60 /* skip network name */
61 while (linep < limit && !isspace(*linep))
62 linep++;
63 /* skip the delimiting spaces */
64 while (linep < limit && isspace(*linep))
65 linep++;
66 if (linep == limit)
67 return (0);
68
69 addrstart = linep;
70 while (linep < limit && !isspace(*linep))
71 linep++;
72 addrlen = linep - addrstart;
73 if (addrlen < sizeof (addrbuf)) {
74 (void) memcpy(addrbuf, addrstart, addrlen);
75 addrbuf[addrlen] = '\0';
76 if ((linenet = inet_network(addrbuf)) ==
77 (in_addr_t)0xffffffffU)
78 return (0);
79 return (AF_INET == argp->key.netaddr.type &&
80 linenet == argp->key.netaddr.net);
81 }
82 return (0);
83 }
84
85 static nss_status_t
getbyaddr(be,a)86 getbyaddr(be, a)
87 files_backend_ptr_t be;
88 void *a;
89 {
90 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
91
92 return (_nss_files_XY_all(be, argp, 1, 0, check_addr));
93 }
94
95 static files_backend_op_t net_ops[] = {
96 _nss_files_destr,
97 _nss_files_endent,
98 _nss_files_setent,
99 _nss_files_getent_netdb,
100 getbyname,
101 getbyaddr
102 };
103
104 /*ARGSUSED*/
105 nss_backend_t *
_nss_files_networks_constr(dummy1,dummy2,dummy3)106 _nss_files_networks_constr(dummy1, dummy2, dummy3)
107 const char *dummy1, *dummy2, *dummy3;
108 {
109 return (_nss_files_constr(net_ops,
110 sizeof (net_ops) / sizeof (net_ops[0]),
111 _PATH_NETWORKS,
112 NSS_LINELEN_NETWORKS,
113 NULL));
114 }
115