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/* cancel.c - LDAP cancel extended operation */
/* $OpenLDAP: pkg/ldap/servers/slapd/cancel.c,v 1.16.2.6 2006/01/03 22:16:13 kurt Exp $ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2006 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>.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/krb.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/unistd.h>
#include "slap.h"
#include <lber_pvt.h>
#include <lutil.h>
int cancel_extop( Operation *op, SlapReply *rs )
{
Operation *o;
int rc;
int opid;
BerElement *ber;
assert( ber_bvcmp( &slap_EXOP_CANCEL, &op->ore_reqoid ) == 0 );
if ( op->ore_reqdata == NULL ) {
rs->sr_text = "no message ID supplied";
return LDAP_PROTOCOL_ERROR;
}
ber = ber_init( op->ore_reqdata );
if ( ber == NULL ) {
rs->sr_text = "internal error";
return LDAP_OTHER;
}
if ( ber_scanf( ber, "{i}", &opid ) == LBER_ERROR ) {
rs->sr_text = "message ID parse failed";
return LDAP_PROTOCOL_ERROR;
}
(void) ber_free( ber, 1 );
if ( opid < 0 ) {
rs->sr_text = "message ID invalid";
return LDAP_PROTOCOL_ERROR;
}
Statslog( LDAP_DEBUG_STATS, "%s CANCEL msg=%d\n",
op->o_log_prefix, opid, 0, 0, 0 );
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
LDAP_STAILQ_FOREACH( o, &op->o_conn->c_pending_ops, o_next ) {
if ( o->o_msgid == opid ) {
LDAP_STAILQ_REMOVE( &op->o_conn->c_pending_ops, o, slap_op, o_next );
LDAP_STAILQ_NEXT(o, o_next) = NULL;
op->o_conn->c_n_ops_pending--;
slap_op_free( o );
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
return LDAP_SUCCESS;
}
}
LDAP_STAILQ_FOREACH( o, &op->o_conn->c_ops, o_next ) {
if ( o->o_msgid == opid ) {
o->o_abandon = 1;
break;
}
}
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
if ( o ) {
if ( o->o_cancel != SLAP_CANCEL_NONE ) {
rs->sr_text = "message ID already being cancelled";
return LDAP_PROTOCOL_ERROR;
}
o->o_cancel = SLAP_CANCEL_REQ;
LDAP_STAILQ_FOREACH( op->o_bd, &backendDB, be_next ) {
if( !op->o_bd->be_cancel ) continue;
op->oq_cancel.rs_msgid = opid;
if ( op->o_bd->be_cancel( op, rs ) == LDAP_SUCCESS ) {
return LDAP_SUCCESS;
}
}
while ( o->o_cancel == SLAP_CANCEL_REQ ) {
ldap_pvt_thread_yield();
}
if ( o->o_cancel == SLAP_CANCEL_ACK ) {
rc = LDAP_SUCCESS;
} else {
rc = o->o_cancel;
}
o->o_cancel = SLAP_CANCEL_DONE;
} else {
rs->sr_text = "message ID not found";
rc = LDAP_NO_SUCH_OPERATION;
}
return rc;
}
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