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 * nis/gethostent.c -- "nis" backend for nsswitch "hosts" database
26 */
27
28 #include <ctype.h>
29 #include <netdb.h>
30 #include <stdio.h>
31 #include <string.h>
32 #include <netinet/in.h>
33 #include <arpa/inet.h>
34 #include <sys/socket.h>
35 #include "nis_common.h"
36 #include <stdlib.h>
37
38 static nss_status_t
getbyname(be,a)39 getbyname(be, a)
40 nis_backend_ptr_t be;
41 void *a;
42 {
43 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
44 nss_status_t res;
45
46 const char *s;
47 char c;
48
49 for (s = argp->key.name; (c = *s) != '\0'; s++) {
50 if (isupper(c)) {
51 char *copy;
52 char *mung;
53
54 if ((copy = strdup(argp->key.name)) == 0) {
55 return (NSS_UNAVAIL);
56 }
57 for (mung = copy + (s - argp->key.name);
58 (c = *mung) != '\0'; mung++) {
59 if (isupper(c)) {
60 *mung = _tolower(c);
61 }
62 }
63 res = _nss_nis_lookup(be, argp, 1, "hosts.byname",
64 copy, 0);
65 free(copy);
66 argp->h_errno = __nss2herrno(res);
67 return (res);
68 }
69 }
70 res = _nss_nis_lookup(be, argp, 1,
71 "hosts.byname", argp->key.name, 0);
72 if (res != NSS_SUCCESS)
73 argp->h_errno = __nss2herrno(res);
74 return (res);
75 }
76
77 static nss_status_t
getbyaddr(be,a)78 getbyaddr(be, a)
79 nis_backend_ptr_t be;
80 void *a;
81 {
82 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
83 struct in_addr addr;
84 char buf[18];
85 nss_status_t res;
86 extern char *inet_ntoa_r(); /* not an advertised function from */
87 /* libnsl (no man page), so no */
88 /* prototype. */
89
90 /* === Do we really want to be this pedantic? */
91 if (argp->key.hostaddr.type != AF_INET ||
92 argp->key.hostaddr.len != sizeof (addr)) {
93 return (NSS_NOTFOUND);
94 }
95 (void) memcpy(&addr, argp->key.hostaddr.addr, sizeof (addr));
96 res = _nss_nis_lookup(be, argp, 1, "hosts.byaddr",
97 inet_ntoa_r(addr, buf), 0);
98 if (res != NSS_SUCCESS)
99 argp->h_errno = __nss2herrno(res);
100 return (res);
101 }
102
103
104 static nis_backend_op_t host_ops[] = {
105 _nss_nis_destr,
106 _nss_nis_endent,
107 _nss_nis_setent,
108 _nss_nis_getent_netdb,
109 getbyname,
110 getbyaddr
111 };
112
113 /*ARGSUSED*/
114 nss_backend_t *
_nss_nis_hosts_constr(dummy1,dummy2,dummy3)115 _nss_nis_hosts_constr(dummy1, dummy2, dummy3)
116 const char *dummy1, *dummy2, *dummy3;
117 {
118 return (_nss_nis_constr(host_ops,
119 sizeof (host_ops) / sizeof (host_ops[0]),
120 "hosts.byaddr"));
121 }
122