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/* compare.c - ldap backend compare function */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2003-2022 The OpenLDAP Foundation.
* Portions Copyright 1999-2003 Howard Chu.
* Portions Copyright 2000-2003 Pierangelo Masarati.
* 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 the Howard Chu for inclusion
* in OpenLDAP Software and subsequently enhanced by Pierangelo
* Masarati.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "slap.h"
#include "back-ldap.h"
int
ldap_back_compare(
Operation *op,
SlapReply *rs )
{
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
ldapconn_t *lc = NULL;
ber_int_t msgid;
ldap_back_send_t retrying = LDAP_BACK_RETRYING;
LDAPControl **ctrls = NULL;
int rc = LDAP_SUCCESS;
if ( !ldap_back_dobind( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
lc = NULL;
goto cleanup;
}
retry:
ctrls = op->o_ctrls;
rc = ldap_back_controls_add( op, rs, lc, &ctrls );
if ( rc != LDAP_SUCCESS ) {
send_ldap_result( op, rs );
goto cleanup;
}
rs->sr_err = ldap_compare_ext( lc->lc_ld, op->o_req_dn.bv_val,
op->orc_ava->aa_desc->ad_cname.bv_val,
&op->orc_ava->aa_value,
ctrls, NULL, &msgid );
rc = ldap_back_op_result( lc, op, rs, msgid,
li->li_timeout[ SLAP_OP_COMPARE ],
( LDAP_BACK_SENDRESULT | retrying ) );
if ( rc == LDAP_UNAVAILABLE && retrying ) {
retrying &= ~LDAP_BACK_RETRYING;
if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
/* if the identity changed, there might be need to re-authz */
(void)ldap_back_controls_free( op, rs, &ctrls );
goto retry;
}
}
ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_COMPARE ], 1 );
ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
cleanup:
(void)ldap_back_controls_free( op, rs, &ctrls );
if ( lc != NULL ) {
ldap_back_release_conn( li, lc );
}
return rs->sr_err;
}
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