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 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/types.h> 29 #include <sys/socket.h> 30 #include <net/if.h> 31 #include <netinet/in.h> 32 #include <net/if_arp.h> 33 #include <netinet/if_ether.h> 34 #include "ldap_common.h" 35 36 /* ether attributes filters */ 37 #define _E_HOSTNAME "cn" 38 #define _E_MACADDRESS "macaddress" 39 #define _F_GETETHERBYHOST "(&(objectClass=ieee802Device)(cn=%s))" 40 #define _F_GETETHERBYHOST_SSD "(&(%%s)(cn=%s))" 41 #define _F_GETETHERBYETHER "(&(objectClass=ieee802Device)(macAddress=%s))" 42 #define _F_GETETHERBYETHER_SSD "(&(%%s)(macAddress=%s))" 43 44 static const char *ethers_attrs[] = { 45 _E_HOSTNAME, 46 _E_MACADDRESS, 47 (char *)NULL 48 }; 49 50 /* 51 * _nss_ldap_ethers2str is the data marshaling method for the ethers 52 * ether_hostton/ether_ntohost backend processes. 53 * This method is called after a successful ldap search has been performed. 54 * This method will parse the ldap search values into the file format. 55 * e.g. 56 * 57 * 8:0:20:8e:eb:8a8 borealis 58 * 59 * The front end marshaller str2ether uses argp->buf.result for a different 60 * purpose so a flag be->db_type is set to work around this oddity. 61 * 62 */ 63 /*ARGSUSED0*/ 64 static int 65 _nss_ldap_ethers2str(ldap_backend_ptr be, nss_XbyY_args_t *argp) 66 { 67 int nss_result; 68 ns_ldap_result_t *result = be->result; 69 char **host, **macaddress; 70 71 if (result == NULL) 72 return (NSS_STR_PARSE_PARSE); 73 nss_result = NSS_STR_PARSE_SUCCESS; 74 75 host = __ns_ldap_getAttr(result->entry, _E_HOSTNAME); 76 if (host == NULL || host[0] == NULL || (strlen(host[0]) < 1)) { 77 nss_result = NSS_STR_PARSE_PARSE; 78 goto result_ea2str; 79 } 80 macaddress = __ns_ldap_getAttr(result->entry, _E_MACADDRESS); 81 if (macaddress == NULL || macaddress[0] == NULL || 82 (strlen(macaddress[0]) < 1)) { 83 nss_result = NSS_STR_PARSE_PARSE; 84 goto result_ea2str; 85 } 86 be->buflen = strlen(host[0]) + strlen(macaddress[0]) + 1; /* ' ' */ 87 /* Add a trailing null for easy debug */ 88 be->buffer = calloc(1, be->buflen + 1); 89 if (be->buffer == NULL) { 90 nss_result = NSS_STR_PARSE_PARSE; 91 goto result_ea2str; 92 } 93 94 (void) snprintf(be->buffer, be->buflen + 1, "%s %s", 95 macaddress[0], host[0]); 96 be->db_type = NSS_LDAP_DB_ETHERS; 97 98 result_ea2str: 99 100 (void) __ns_ldap_freeResult(&be->result); 101 return (nss_result); 102 } 103 104 /* 105 * getbyhost gets an ethernet address by hostname. This function 106 * constructs an ldap search filter using the hostname invocation 107 * parameter and the getetherbyhost search filter defined. Once 108 * the filter is constructed, we search for a matching entry and 109 * marshal the data results into uchar_t *ether for the frontend 110 * process. The function _nss_ldap_ethers2ent performs the data 111 * marshaling. 112 * 113 * RFC 2307, An Approach for Using LDAP as a Network Information Service, 114 * indicates that dn's be fully qualified. Host name searches will be on 115 * fully qualified host names (e.g., foo.bar.sun.com). 116 */ 117 118 static nss_status_t 119 getbyhost(ldap_backend_ptr be, void *a) 120 { 121 char hostname[3 * MAXHOSTNAMELEN]; 122 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 123 char searchfilter[SEARCHFILTERLEN]; 124 char userdata[SEARCHFILTERLEN]; 125 int ret; 126 nss_status_t rc; 127 128 if (_ldap_filter_name(hostname, argp->key.name, sizeof (hostname)) != 0) 129 return ((nss_status_t)NSS_NOTFOUND); 130 131 ret = snprintf(searchfilter, sizeof (searchfilter), 132 _F_GETETHERBYHOST, hostname); 133 134 if (ret >= sizeof (searchfilter) || ret < 0) 135 return ((nss_status_t)NSS_NOTFOUND); 136 137 ret = snprintf(userdata, sizeof (userdata), 138 _F_GETETHERBYHOST_SSD, hostname); 139 140 if (ret >= sizeof (userdata) || ret < 0) 141 return ((nss_status_t)NSS_NOTFOUND); 142 143 rc = (nss_status_t)_nss_ldap_lookup(be, argp, 144 _ETHERS, searchfilter, NULL, 145 _merge_SSD_filter, userdata); 146 147 return (rc); 148 } 149 150 151 /* 152 * getbyether gets an ethernet address by ethernet address. This 153 * function constructs an ldap search filter using the ASCII 154 * ethernet address invocation parameter and the getetherbyether 155 * search filter defined. Once the filter is constructed, we 156 * search for a matching entry and marshal the data results into 157 * uchar_t *ether for the frontend process. The function 158 * _nss_ldap_ethers2ent performs the data marshaling. 159 */ 160 161 static nss_status_t 162 getbyether(ldap_backend_ptr be, void *a) 163 { 164 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a; 165 char etherstr[18]; 166 uchar_t *e = argp->key.ether; 167 char searchfilter[SEARCHFILTERLEN]; 168 char userdata[SEARCHFILTERLEN]; 169 int ret; 170 171 ret = snprintf(etherstr, sizeof (etherstr), "%x:%x:%x:%x:%x:%x", 172 *e, *(e + 1), *(e + 2), *(e + 3), *(e + 4), *(e + 5)); 173 if (ret >= sizeof (etherstr) || ret < 0) 174 return ((nss_status_t)NSS_NOTFOUND); 175 176 ret = snprintf(searchfilter, sizeof (searchfilter), 177 _F_GETETHERBYETHER, etherstr); 178 if (ret >= sizeof (searchfilter) || ret < 0) 179 return ((nss_status_t)NSS_NOTFOUND); 180 181 ret = snprintf(userdata, sizeof (userdata), 182 _F_GETETHERBYETHER_SSD, etherstr); 183 if (ret >= sizeof (userdata) || ret < 0) 184 return ((nss_status_t)NSS_NOTFOUND); 185 186 return ((nss_status_t)_nss_ldap_lookup(be, argp, 187 _ETHERS, searchfilter, NULL, 188 _merge_SSD_filter, userdata)); 189 } 190 191 192 static ldap_backend_op_t ethers_ops[] = { 193 _nss_ldap_destr, 194 getbyhost, 195 getbyether 196 }; 197 198 199 /* 200 * _nss_ldap_ethers_constr is where life begins. This function calls the 201 * generic ldap constructor function to define and build the abstract 202 * data types required to support ldap operations. 203 */ 204 205 /*ARGSUSED0*/ 206 nss_backend_t * 207 _nss_ldap_ethers_constr(const char *dummy1, const char *dummy2, 208 const char *dummy3) 209 { 210 211 return ((nss_backend_t *)_nss_ldap_constr(ethers_ops, 212 sizeof (ethers_ops)/sizeof (ethers_ops[0]), _ETHERS, 213 ethers_attrs, _nss_ldap_ethers2str)); 214 } 215