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