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 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include "mdns_common.h" 28 29 /* 30 * gethostby* functions for the hosts database. The hosts 31 * database stores IPv4 addresses only. 32 * mDNS query functions to perform the host lookup 33 * are in mdns/common/mdns_common.c file. 34 * _nss_mdns_hosts_constr is called to initialize 35 * the nsswitch backend data structures. 36 */ 37 38 static nss_status_t 39 getbyname(be, a) 40 mdns_backend_ptr_t be; 41 void *a; 42 { 43 struct mdns_querydata qdata; 44 char *hname; 45 46 (void) memset(&qdata, 0, sizeof (struct mdns_querydata)); 47 48 qdata.argp = (nss_XbyY_args_t *)a; 49 hname = (char *)qdata.argp->key.name; 50 51 _nss_mdns_updatecfg(be); 52 return (_nss_mdns_querybyname(be, hname, AF_INET, &qdata)); 53 } 54 55 /*ARGSUSED*/ 56 static nss_status_t 57 getbyaddr(be, a) 58 mdns_backend_ptr_t be; 59 void *a; 60 { 61 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 62 struct in_addr addr; 63 struct mdns_querydata qdata; 64 char buffer[sizeof ("255.255.255.255.in-addr.arpa.")]; 65 uint8_t *p; 66 67 (void) memset(&qdata, 0, sizeof (struct mdns_querydata)); 68 qdata.argp = argp; 69 70 argp->h_errno = 0; 71 if ((argp->key.hostaddr.type != AF_INET) || 72 (argp->key.hostaddr.len != sizeof (addr))) 73 return (NSS_NOTFOUND); 74 75 (void) memcpy(&addr, argp->key.hostaddr.addr, sizeof (addr)); 76 77 if (inet_ntop(AF_INET, (void *) &addr.s_addr, 78 (void *)qdata.paddrbuf, 79 sizeof (qdata.paddrbuf)) == NULL) 80 return (NSS_NOTFOUND); 81 82 qdata.af = AF_INET; 83 p = (uint8_t *)&addr.s_addr; 84 (void) snprintf(buffer, sizeof (buffer), 85 "%u.%u.%u.%u.in-addr.arpa.", p[3], p[2], p[1], p[0]); 86 87 _nss_mdns_updatecfg(be); 88 return (_nss_mdns_querybyaddr(be, buffer, qdata.af, &qdata)); 89 } 90 91 /*ARGSUSED*/ 92 static nss_status_t 93 _nss_mdns_getent(be, args) 94 mdns_backend_ptr_t be; 95 void *args; 96 { 97 return (NSS_UNAVAIL); 98 } 99 100 /*ARGSUSED*/ 101 static nss_status_t 102 _nss_mdns_setent(be, dummy) 103 mdns_backend_ptr_t be; 104 void *dummy; 105 { 106 return (NSS_UNAVAIL); 107 } 108 109 /*ARGSUSED*/ 110 static nss_status_t 111 _nss_mdns_endent(be, dummy) 112 mdns_backend_ptr_t be; 113 void *dummy; 114 { 115 return (NSS_UNAVAIL); 116 } 117 118 /*ARGSUSED*/ 119 static nss_status_t 120 _nss_mdns_hosts_destr(be, dummy) 121 mdns_backend_ptr_t be; 122 void *dummy; 123 { 124 _nss_mdns_destr(be); 125 return (NSS_SUCCESS); 126 } 127 128 static mdns_backend_op_t host_ops[] = { 129 _nss_mdns_hosts_destr, 130 _nss_mdns_endent, 131 _nss_mdns_setent, 132 _nss_mdns_getent, 133 getbyname, 134 getbyaddr, 135 }; 136 137 /*ARGSUSED*/ 138 nss_backend_t * 139 _nss_mdns_hosts_constr(dummy1, dummy2, dummy3) 140 const char *dummy1, *dummy2, *dummy3; 141 { 142 return (_nss_mdns_constr(host_ops, 143 sizeof (host_ops) / sizeof (host_ops[0]))); 144 } 145 146 /*ARGSUSED*/ 147 nss_status_t 148 _nss_get_mdns_hosts_name(mdns_backend_ptr_t *be, void **bufp, size_t *sizep) 149 { 150 return (_nss_mdns_gethost_withttl(*bufp, *sizep, 0)); 151 } 152