1 /* 2 * lib/kdb/kdb_ldap/ldap_krbcontainer.c 3 * 4 * Copyright (c) 2004-2005, Novell, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * * Redistributions of source code must retain the above copyright notice, 11 * this list of conditions and the following disclaimer. 12 * * Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * * The copyright holder's name is not used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "ldap_main.h" 32 #include "kdb_ldap.h" 33 #include "ldap_err.h" 34 #include <libintl.h> 35 36 char *policyrefattribute[] = {"krbTicketPolicyReference",NULL}; 37 char *krbcontainerrefattr[] = {"krbContainerReference", NULL}; 38 39 /* 40 * Free the krb5_ldap_krbcontainer_params 41 */ 42 43 void 44 krb5_ldap_free_krbcontainer_params(krb5_ldap_krbcontainer_params *cparams) 45 { 46 if (cparams == NULL) 47 return; 48 49 if (cparams->policyreference) 50 krb5_xfree(cparams->policyreference); 51 52 if (cparams->parent) 53 krb5_xfree(cparams->parent); 54 55 if (cparams->DN) 56 krb5_xfree(cparams->DN); 57 58 krb5_xfree(cparams); 59 60 return; 61 } 62 63 /* 64 * Read the kerberos container. Kerberos container dn is read from the krb5.conf file. 65 * In case of eDirectory, if the dn is not present in the conf file, refer Security Container 66 * to fetch the dn information. 67 * 68 * Reading kerberos container includes reading the policyreference attribute and the policy 69 * object to read the attributes associated with it. 70 */ 71 72 krb5_error_code 73 krb5_ldap_read_krbcontainer_params(krb5_context context, 74 krb5_ldap_krbcontainer_params **cparamp) 75 76 { 77 krb5_error_code st=0, tempst=0; 78 LDAP *ld=NULL; 79 LDAPMessage *result=NULL, *ent=NULL; 80 krb5_ldap_krbcontainer_params *cparams=NULL; 81 kdb5_dal_handle *dal_handle=NULL; 82 krb5_ldap_context *ldap_context=NULL; 83 krb5_ldap_server_handle *ldap_server_handle=NULL; 84 85 SETUP_CONTEXT(); 86 GET_HANDLE(); 87 88 cparams =(krb5_ldap_krbcontainer_params *) malloc(sizeof(krb5_ldap_krbcontainer_params)); 89 CHECK_NULL(cparams); 90 memset((char *) cparams, 0, sizeof(krb5_ldap_krbcontainer_params)); 91 92 /* read kerberos containter location from [dbmodules] section of krb5.conf file */ 93 if (ldap_context->conf_section) { 94 if ((st=profile_get_string(context->profile, KDB_MODULE_SECTION, ldap_context->conf_section, 95 "ldap_kerberos_container_dn", NULL, 96 &cparams->DN)) != 0) { 97 krb5_set_error_message(context, st, gettext("Error reading kerberos container location " 98 "from krb5.conf")); 99 goto cleanup; 100 } 101 } 102 103 /* read kerberos containter location from [dbdefaults] section of krb5.conf file */ 104 if (cparams->DN == NULL) { 105 if ((st=profile_get_string(context->profile, KDB_MODULE_DEF_SECTION, 106 "ldap_kerberos_container_dn", NULL, 107 NULL, &cparams->DN)) != 0) { 108 krb5_set_error_message(context, st, gettext("Error reading kerberos container location " 109 "from krb5.conf")); 110 goto cleanup; 111 } 112 } 113 114 #ifndef HAVE_EDIRECTORY 115 /* 116 * In case eDirectory, we can fall back to security container if the kerberos container location 117 * is missing in the conf file. In openldap we will have to return an error. 118 */ 119 if (cparams->DN == NULL) { 120 st = KRB5_KDB_SERVER_INTERNAL_ERR; 121 krb5_set_error_message(context, st, gettext("Kerberos container location not specified")); 122 goto cleanup; 123 } 124 #endif 125 126 if (cparams->DN != NULL) { 127 /* NOTE: krbmaxtktlife, krbmaxrenewableage ... present on Kerberos Container is 128 * not read 129 */ 130 LDAP_SEARCH_1(cparams->DN, LDAP_SCOPE_BASE, "(objectclass=krbContainer)", policyrefattribute, IGNORE_STATUS); 131 if (st != LDAP_SUCCESS && st != LDAP_NO_SUCH_OBJECT) { 132 st = set_ldap_error(context, st, OP_SEARCH); 133 goto cleanup; 134 } 135 136 if (st == LDAP_NO_SUCH_OBJECT) { 137 st = KRB5_KDB_NOENTRY; 138 goto cleanup; 139 } 140 } 141 142 #ifdef HAVE_EDIRECTORY 143 /* 144 * If the kerberos location in the conf file is missing or invalid, fall back to the 145 * security container. If the kerberos location in the security container is also missing 146 * then fall back to the default value 147 */ 148 if ((cparams->DN == NULL) || (st == LDAP_NO_SUCH_OBJECT)) { 149 /* 150 * kerberos container can be anywhere. locate it by reading the security 151 * container to find the location. 152 */ 153 LDAP_SEARCH(SECURITY_CONTAINER, LDAP_SCOPE_BASE, NULL, krbcontainerrefattr); 154 if ((ent = ldap_first_entry(ld, result)) != NULL) { 155 if ((st=krb5_ldap_get_string(ld, ent, "krbcontainerreference", 156 &(cparams->DN), NULL)) != 0) 157 goto cleanup; 158 if (cparams->DN == NULL) { 159 cparams->DN = strdup(KERBEROS_CONTAINER); 160 CHECK_NULL(cparams->DN); 161 } 162 } 163 ldap_msgfree(result); 164 165 /* NOTE: krbmaxtktlife, krbmaxrenewableage ... attributes present on 166 * Kerberos Container is not read 167 */ 168 LDAP_SEARCH(cparams->DN, LDAP_SCOPE_BASE, "(objectclass=krbContainer)", policyrefattribute); 169 } 170 #endif 171 172 if ((ent = ldap_first_entry(ld, result))) { 173 if ((st=krb5_ldap_get_string(ld, ent, "krbticketpolicyreference", 174 &(cparams->policyreference), NULL)) != 0) 175 goto cleanup; 176 } 177 ldap_msgfree(result); 178 179 if (cparams->policyreference != NULL) { 180 LDAP_SEARCH_1(cparams->policyreference, LDAP_SCOPE_BASE, NULL, policy_attributes, IGNORE_STATUS); 181 if (st != LDAP_SUCCESS && st!= LDAP_NO_SUCH_OBJECT) { 182 st = set_ldap_error(context, st, OP_SEARCH); 183 goto cleanup; 184 } 185 st = LDAP_SUCCESS; /* reset the return status in case it is LDAP_NO_SUCH_OBJECT */ 186 187 ent=ldap_first_entry(ld, result); 188 if (ent != NULL) { 189 krb5_ldap_get_value(ld, ent, "krbmaxtktlife", &(cparams->max_life)); 190 krb5_ldap_get_value(ld, ent, "krbmaxrenewableage", &(cparams->max_renewable_life)); 191 krb5_ldap_get_value(ld, ent, "krbticketflags", &(cparams->tktflags)); 192 } 193 ldap_msgfree(result); 194 } 195 *cparamp=cparams; 196 197 cleanup: 198 if (st != 0) { 199 krb5_ldap_free_krbcontainer_params(cparams); 200 *cparamp=NULL; 201 } 202 krb5_ldap_put_handle_to_pool(ldap_context, ldap_server_handle); 203 return st; 204 } 205