/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2006-2009 Sun Microsystems, Inc.
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* Portions Copyright 2012-2016 ForgeRock AS.
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*/
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package org.opends.server.extensions;
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import org.forgerock.i18n.LocalizableMessage;
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import org.forgerock.opendj.server.config.server.CancelExtendedOperationHandlerCfg;
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import org.opends.server.api.ClientConnection;
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import org.opends.server.api.ExtendedOperationHandler;
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import org.forgerock.opendj.config.server.ConfigException;
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import org.opends.server.core.ExtendedOperation;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import org.forgerock.opendj.io.ASN1;
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import org.forgerock.opendj.io.ASN1Reader;
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import org.opends.server.types.*;
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import org.forgerock.opendj.ldap.ResultCode;
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import org.forgerock.opendj.ldap.ByteString;
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import static org.opends.messages.ExtensionMessages.*;
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import static org.opends.server.util.ServerConstants.*;
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import static org.opends.server.util.StaticUtils.*;
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/**
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* This class implements the LDAP cancel extended operation defined in RFC 3909.
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* It is similar to the LDAP abandon operation, with the exception that it
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* requires a response for both the operation that is cancelled and the cancel
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* request (whereas an abandon request never has a response, and if it is
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* successful the abandoned operation won't get one either).
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*/
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public class CancelExtendedOperation
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extends ExtendedOperationHandler<CancelExtendedOperationHandlerCfg>
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{
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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/**
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* Create an instance of this cancel extended operation. All initialization
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* should be performed in the <CODE>initializeExtendedOperationHandler</CODE>
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* method.
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*/
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public CancelExtendedOperation()
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{
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super();
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}
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@Override
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public void initializeExtendedOperationHandler(
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CancelExtendedOperationHandlerCfg config)
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throws ConfigException, InitializationException
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{
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super.initializeExtendedOperationHandler(config);
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}
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/**
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* Processes the provided extended operation.
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*
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* @param operation The extended operation to be processed.
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*/
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@Override
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public void processExtendedOperation(ExtendedOperation operation)
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{
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// The value of the request must be a sequence containing an integer element
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// that holds the message ID of the operation to cancel. If there is no
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// value or it cannot be decoded, then fail.
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int idToCancel;
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ByteString requestValue = operation.getRequestValue();
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if (requestValue == null)
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{
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operation.setResultCode(ResultCode.PROTOCOL_ERROR);
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operation.appendErrorMessage(ERR_EXTOP_CANCEL_NO_REQUEST_VALUE.get());
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return;
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}
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try
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{
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ASN1Reader reader = ASN1.getReader(requestValue);
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reader.readStartSequence();
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idToCancel = (int)reader.readInteger();
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reader.readEndSequence();
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}
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catch (Exception e)
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{
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logger.traceException(e);
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operation.setResultCode(ResultCode.PROTOCOL_ERROR);
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LocalizableMessage message = ERR_EXTOP_CANCEL_CANNOT_DECODE_REQUEST_VALUE.get(
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getExceptionMessage(e));
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operation.appendErrorMessage(message);
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return;
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}
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// Create the cancel request for the target operation.
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LocalizableMessage cancelReason =
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INFO_EXTOP_CANCEL_REASON.get(operation.getMessageID());
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CancelRequest cancelRequest = new CancelRequest(true, cancelReason);
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// Get the client connection and attempt the cancel.
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ClientConnection clientConnection = operation.getClientConnection();
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CancelResult cancelResult = clientConnection.cancelOperation(idToCancel,
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cancelRequest);
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// Update the result of the extended operation and return.
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ResultCode resultCode = cancelResult.getResultCode();
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operation.setResultCode(resultCode == ResultCode.CANCELLED
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? ResultCode.SUCCESS : resultCode);
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operation.appendErrorMessage(cancelResult.getResponseMessage());
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}
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@Override
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public String getExtendedOperationOID()
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{
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return OID_CANCEL_REQUEST;
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}
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@Override
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public String getExtendedOperationName()
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{
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return "Cancel";
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}
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}
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