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-rw-r--r--servers/slapd/back-ndb/compare.cpp169
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diff --git a/servers/slapd/back-ndb/compare.cpp b/servers/slapd/back-ndb/compare.cpp
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+++ b/servers/slapd/back-ndb/compare.cpp
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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;
+}