ldap_krbcontainer.c revision 54925bf60766fbb4f1f2d7c843721406a7b7a3fb
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* lib/kdb/kdb_ldap/ldap_krbcontainer.c
*
* Copyright (c) 2004-2005, Novell, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * The copyright holder's name is not used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "ldap_main.h"
#include "kdb_ldap.h"
#include "ldap_err.h"
#include <libintl.h>
char *policyrefattribute[] = {"krbTicketPolicyReference",NULL};
char *krbcontainerrefattr[] = {"krbContainerReference", NULL};
/*
* Free the krb5_ldap_krbcontainer_params
*/
void
krb5_ldap_free_krbcontainer_params(krb5_ldap_krbcontainer_params *cparams)
{
if (cparams == NULL)
return;
if (cparams->policyreference)
krb5_xfree(cparams->policyreference);
if (cparams->parent)
krb5_xfree(cparams->parent);
if (cparams->DN)
krb5_xfree(cparams->DN);
krb5_xfree(cparams);
return;
}
/*
* Read the kerberos container. Kerberos container dn is read from the krb5.conf file.
* In case of eDirectory, if the dn is not present in the conf file, refer Security Container
* to fetch the dn information.
*
* Reading kerberos container includes reading the policyreference attribute and the policy
* object to read the attributes associated with it.
*/
krb5_error_code
krb5_ldap_read_krbcontainer_params(krb5_context context,
krb5_ldap_krbcontainer_params **cparamp)
{
krb5_error_code st=0, tempst=0;
LDAP *ld=NULL;
LDAPMessage *result=NULL, *ent=NULL;
krb5_ldap_krbcontainer_params *cparams=NULL;
kdb5_dal_handle *dal_handle=NULL;
krb5_ldap_context *ldap_context=NULL;
krb5_ldap_server_handle *ldap_server_handle=NULL;
SETUP_CONTEXT();
GET_HANDLE();
cparams =(krb5_ldap_krbcontainer_params *) malloc(sizeof(krb5_ldap_krbcontainer_params));
CHECK_NULL(cparams);
memset((char *) cparams, 0, sizeof(krb5_ldap_krbcontainer_params));
/* read kerberos containter location from [dbmodules] section of krb5.conf file */
if (ldap_context->conf_section) {
if ((st=profile_get_string(context->profile, KDB_MODULE_SECTION, ldap_context->conf_section,
"ldap_kerberos_container_dn", NULL,
&cparams->DN)) != 0) {
krb5_set_error_message(context, st, gettext("Error reading kerberos container location "
"from krb5.conf"));
goto cleanup;
}
}
/* read kerberos containter location from [dbdefaults] section of krb5.conf file */
if (cparams->DN == NULL) {
if ((st=profile_get_string(context->profile, KDB_MODULE_DEF_SECTION,
"ldap_kerberos_container_dn", NULL,
NULL, &cparams->DN)) != 0) {
krb5_set_error_message(context, st, gettext("Error reading kerberos container location "
"from krb5.conf"));
goto cleanup;
}
}
#ifndef HAVE_EDIRECTORY
/*
* In case eDirectory, we can fall back to security container if the kerberos container location
* is missing in the conf file. In openldap we will have to return an error.
*/
if (cparams->DN == NULL) {
st = KRB5_KDB_SERVER_INTERNAL_ERR;
krb5_set_error_message(context, st, gettext("Kerberos container location not specified"));
goto cleanup;
}
#endif
if (cparams->DN != NULL) {
/* NOTE: krbmaxtktlife, krbmaxrenewableage ... present on Kerberos Container is
* not read
*/
LDAP_SEARCH_1(cparams->DN, LDAP_SCOPE_BASE, "(objectclass=krbContainer)", policyrefattribute, IGNORE_STATUS);
if (st != LDAP_SUCCESS && st != LDAP_NO_SUCH_OBJECT) {
st = set_ldap_error(context, st, OP_SEARCH);
goto cleanup;
}
if (st == LDAP_NO_SUCH_OBJECT) {
st = KRB5_KDB_NOENTRY;
goto cleanup;
}
}
#ifdef HAVE_EDIRECTORY
/*
* If the kerberos location in the conf file is missing or invalid, fall back to the
* security container. If the kerberos location in the security container is also missing
* then fall back to the default value
*/
if ((cparams->DN == NULL) || (st == LDAP_NO_SUCH_OBJECT)) {
/*
* kerberos container can be anywhere. locate it by reading the security
* container to find the location.
*/
LDAP_SEARCH(SECURITY_CONTAINER, LDAP_SCOPE_BASE, NULL, krbcontainerrefattr);
if ((ent = ldap_first_entry(ld, result)) != NULL) {
if ((st=krb5_ldap_get_string(ld, ent, "krbcontainerreference",
&(cparams->DN), NULL)) != 0)
goto cleanup;
if (cparams->DN == NULL) {
cparams->DN = strdup(KERBEROS_CONTAINER);
CHECK_NULL(cparams->DN);
}
}
ldap_msgfree(result);
/* NOTE: krbmaxtktlife, krbmaxrenewableage ... attributes present on
* Kerberos Container is not read
*/
LDAP_SEARCH(cparams->DN, LDAP_SCOPE_BASE, "(objectclass=krbContainer)", policyrefattribute);
}
#endif
if ((ent = ldap_first_entry(ld, result))) {
if ((st=krb5_ldap_get_string(ld, ent, "krbticketpolicyreference",
&(cparams->policyreference), NULL)) != 0)
goto cleanup;
}
ldap_msgfree(result);
if (cparams->policyreference != NULL) {
LDAP_SEARCH_1(cparams->policyreference, LDAP_SCOPE_BASE, NULL, policy_attributes, IGNORE_STATUS);
if (st != LDAP_SUCCESS && st!= LDAP_NO_SUCH_OBJECT) {
st = set_ldap_error(context, st, OP_SEARCH);
goto cleanup;
}
st = LDAP_SUCCESS; /* reset the return status in case it is LDAP_NO_SUCH_OBJECT */
ent=ldap_first_entry(ld, result);
if (ent != NULL) {
krb5_ldap_get_value(ld, ent, "krbmaxtktlife", &(cparams->max_life));
krb5_ldap_get_value(ld, ent, "krbmaxrenewableage", &(cparams->max_renewable_life));
krb5_ldap_get_value(ld, ent, "krbticketflags", &(cparams->tktflags));
}
ldap_msgfree(result);
}
*cparamp=cparams;
cleanup:
if (st != 0) {
krb5_ldap_free_krbcontainer_params(cparams);
*cparamp=NULL;
}
krb5_ldap_put_handle_to_pool(ldap_context, ldap_server_handle);
return st;
}