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/* compare.cpp - ndb backend compare routine */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2008-2021 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENTS:
* This work was initially developed by Howard Chu for inclusion
* in OpenLDAP Software. This work was sponsored by MySQL.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-ndb.h"
int
ndb_back_compare( Operation *op, SlapReply *rs )
{
struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private;
Entry e = {0};
Attribute *a;
int manageDSAit = get_manageDSAit( op );
NdbArgs NA;
NdbRdns rdns;
struct berval matched;
/* Get our NDB handle */
rs->sr_err = ndb_thread_handle( op, &NA.ndb );
rdns.nr_num = 0;
NA.rdns = &rdns;
e.e_name = op->o_req_dn;
e.e_nname = op->o_req_ndn;
NA.e = &e;
dn2entry_retry:
NA.txn = NA.ndb->startTransaction();
rs->sr_text = NULL;
if( !NA.txn ) {
Debug( LDAP_DEBUG_TRACE,
LDAP_XSTRING(ndb_compare) ": startTransaction failed: %s (%d)\n",
NA.ndb->getNdbError().message, NA.ndb->getNdbError().code, 0 );
rs->sr_err = LDAP_OTHER;
rs->sr_text = "internal error";
goto return_results;
}
NA.ocs = NULL;
/* get entry */
rs->sr_err = ndb_entry_get_info( op, &NA, 0, &matched );
switch( rs->sr_err ) {
case 0:
break;
case LDAP_NO_SUCH_OBJECT:
rs->sr_matched = matched.bv_val;
if ( NA.ocs )
ndb_check_referral( op, rs, &NA );
goto return_results;
case LDAP_BUSY:
rs->sr_text = "ldap server busy";
goto return_results;
#if 0
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto dn2entry_retry;
#endif
default:
rs->sr_err = LDAP_OTHER;
rs->sr_text = "internal error";
goto return_results;
}
rs->sr_err = ndb_entry_get_data( op, &NA, 0 );
ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx );
if (!manageDSAit && is_entry_referral( &e ) ) {
/* return referral only if "disclose" is granted on the object */
if ( !access_allowed( op, &e, slap_schema.si_ad_entry,
NULL, ACL_DISCLOSE, NULL ) )
{
rs->sr_err = LDAP_NO_SUCH_OBJECT;
} else {
/* entry is a referral, don't allow compare */
rs->sr_ref = get_entry_referrals( op, &e );
rs->sr_err = LDAP_REFERRAL;
rs->sr_matched = e.e_name.bv_val;
rs->sr_flags |= REP_REF_MUSTBEFREED;
}
Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0, 0, 0 );
goto return_results;
}
if ( get_assert( op ) &&
( test_filter( op, &e, (Filter *)get_assertion( op )) != LDAP_COMPARE_TRUE ))
{
if ( !access_allowed( op, &e, slap_schema.si_ad_entry,
NULL, ACL_DISCLOSE, NULL ) )
{
rs->sr_err = LDAP_NO_SUCH_OBJECT;
} else {
rs->sr_err = LDAP_ASSERTION_FAILED;
}
goto return_results;
}
if ( !access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
&op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL ) )
{
/* return error only if "disclose"
* is granted on the object */
if ( !access_allowed( op, &e, slap_schema.si_ad_entry,
NULL, ACL_DISCLOSE, NULL ) )
{
rs->sr_err = LDAP_NO_SUCH_OBJECT;
} else {
rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
}
goto return_results;
}
rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
for ( a = attrs_find( e.e_attrs, op->oq_compare.rs_ava->aa_desc );
a != NULL;
a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ) )
{
rs->sr_err = LDAP_COMPARE_FALSE;
if ( attr_valfind( a,
SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
&op->oq_compare.rs_ava->aa_value, NULL,
op->o_tmpmemctx ) == 0 )
{
rs->sr_err = LDAP_COMPARE_TRUE;
break;
}
}
return_results:
NA.txn->close();
if ( e.e_attrs ) {
attrs_free( e.e_attrs );
e.e_attrs = NULL;
}
send_ldap_result( op, rs );
switch ( rs->sr_err ) {
case LDAP_COMPARE_FALSE:
case LDAP_COMPARE_TRUE:
rs->sr_err = LDAP_SUCCESS;
break;
}
return rs->sr_err;
}
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