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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1988-1992 Sun Microsystems Inc 24 * All Rights Reserved. 25 * 26 * nis/gethostent.c -- "nis" backend for nsswitch "hosts" database 27 */ 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <ctype.h> 32 #include <netdb.h> 33 #include <stdio.h> 34 #include <string.h> 35 #include <netinet/in.h> 36 #include <arpa/inet.h> 37 #include <sys/socket.h> 38 #include "nis_common.h" 39 #include <stdlib.h> 40 41 static nss_status_t 42 getbyname(be, a) 43 nis_backend_ptr_t be; 44 void *a; 45 { 46 nss_XbyY_args_t *argp = (nss_XbyY_args_t *) a; 47 nss_status_t res; 48 49 const char *s; 50 char c; 51 52 for (s = argp->key.name; (c = *s) != '\0'; s++) { 53 if (isupper(c)) { 54 char *copy; 55 char *mung; 56 57 if ((copy = strdup(argp->key.name)) == 0) { 58 return (NSS_UNAVAIL); 59 } 60 for (mung = copy + (s - argp->key.name); 61 (c = *mung) != '\0'; mung++) { 62 if (isupper(c)) { 63 *mung = _tolower(c); 64 } 65 } 66 res = _nss_nis_lookup(be, argp, 1, "hosts.byname", 67 copy, 0); 68 free(copy); 69 argp->h_errno = __nss2herrno(res); 70 return (res); 71 } 72 } 73 res = _nss_nis_lookup(be, argp, 1, 74 "hosts.byname", argp->key.name, 0); 75 if (res != NSS_SUCCESS) 76 argp->h_errno = __nss2herrno(res); 77 return (res); 78 } 79 80 static nss_status_t 81 getbyaddr(be, a) 82 nis_backend_ptr_t be; 83 void *a; 84 { 85 nss_XbyY_args_t *argp = (nss_XbyY_args_t *) a; 86 struct in_addr addr; 87 char buf[18]; 88 nss_status_t res; 89 extern char *inet_ntoa_r(); /* not an advertised function from */ 90 /* libnsl (no man page), so no */ 91 /* prototype. */ 92 93 /* === Do we really want to be this pedantic? */ 94 if (argp->key.hostaddr.type != AF_INET || 95 argp->key.hostaddr.len != sizeof (addr)) { 96 return (NSS_NOTFOUND); 97 } 98 memcpy(&addr, argp->key.hostaddr.addr, sizeof (addr)); 99 res = _nss_nis_lookup(be, argp, 1, "hosts.byaddr", 100 inet_ntoa_r(addr, buf), 0); 101 if (res != NSS_SUCCESS) 102 argp->h_errno = __nss2herrno(res); 103 return (res); 104 } 105 106 107 static nis_backend_op_t host_ops[] = { 108 _nss_nis_destr, 109 _nss_nis_endent, 110 _nss_nis_setent, 111 _nss_nis_getent_netdb, 112 getbyname, 113 getbyaddr 114 }; 115 116 /*ARGSUSED*/ 117 nss_backend_t * 118 _nss_nis_hosts_constr(dummy1, dummy2, dummy3) 119 const char *dummy1, *dummy2, *dummy3; 120 { 121 return (_nss_nis_constr(host_ops, 122 sizeof (host_ops) / sizeof (host_ops[0]), 123 "hosts.byaddr")); 124 } 125