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 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 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 * 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