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 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 #include <ctype.h> 31 #include <netdb.h> 32 #include <stdio.h> 33 #include <string.h> 34 #include <netinet/in.h> 35 #include <arpa/inet.h> 36 #include <sys/socket.h> 37 #include "nis_common.h" 38 #include <stdlib.h> 39 40 static nss_status_t 41 getbyname(be, a) 42 nis_backend_ptr_t be; 43 void *a; 44 { 45 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 46 nss_status_t res; 47 48 const char *s; 49 char c; 50 51 for (s = argp->key.name; (c = *s) != '\0'; s++) { 52 if (isupper(c)) { 53 char *copy; 54 char *mung; 55 56 if ((copy = strdup(argp->key.name)) == 0) { 57 return (NSS_UNAVAIL); 58 } 59 for (mung = copy + (s - argp->key.name); 60 (c = *mung) != '\0'; mung++) { 61 if (isupper(c)) { 62 *mung = _tolower(c); 63 } 64 } 65 res = _nss_nis_lookup(be, argp, 1, "hosts.byname", 66 copy, 0); 67 free(copy); 68 argp->h_errno = __nss2herrno(res); 69 return (res); 70 } 71 } 72 res = _nss_nis_lookup(be, argp, 1, 73 "hosts.byname", argp->key.name, 0); 74 if (res != NSS_SUCCESS) 75 argp->h_errno = __nss2herrno(res); 76 return (res); 77 } 78 79 static nss_status_t 80 getbyaddr(be, a) 81 nis_backend_ptr_t be; 82 void *a; 83 { 84 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 85 struct in_addr addr; 86 char buf[18]; 87 nss_status_t res; 88 extern char *inet_ntoa_r(); /* not an advertised function from */ 89 /* libnsl (no man page), so no */ 90 /* prototype. */ 91 92 /* === Do we really want to be this pedantic? */ 93 if (argp->key.hostaddr.type != AF_INET || 94 argp->key.hostaddr.len != sizeof (addr)) { 95 return (NSS_NOTFOUND); 96 } 97 (void) memcpy(&addr, argp->key.hostaddr.addr, sizeof (addr)); 98 res = _nss_nis_lookup(be, argp, 1, "hosts.byaddr", 99 inet_ntoa_r(addr, buf), 0); 100 if (res != NSS_SUCCESS) 101 argp->h_errno = __nss2herrno(res); 102 return (res); 103 } 104 105 106 static nis_backend_op_t host_ops[] = { 107 _nss_nis_destr, 108 _nss_nis_endent, 109 _nss_nis_setent, 110 _nss_nis_getent_netdb, 111 getbyname, 112 getbyaddr 113 }; 114 115 /*ARGSUSED*/ 116 nss_backend_t * 117 _nss_nis_hosts_constr(dummy1, dummy2, dummy3) 118 const char *dummy1, *dummy2, *dummy3; 119 { 120 return (_nss_nis_constr(host_ops, 121 sizeof (host_ops) / sizeof (host_ops[0]), 122 "hosts.byaddr")); 123 } 124