/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2006-2008 Sun Microsystems, Inc.
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*/
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package org.opends.server.controls;
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import org.opends.messages.Message;
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import org.opends.server.protocols.asn1.*;
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import static org.opends.server.protocols.asn1.ASN1Constants.
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UNIVERSAL_OCTET_STRING_TYPE;
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import org.opends.server.protocols.ldap.LDAPFilter;
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import org.opends.server.types.*;
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import static org.opends.messages.ProtocolMessages.*;
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import static org.opends.server.util.ServerConstants.*;
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import java.io.IOException;
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/**
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* This class implements the LDAP assertion request control as defined in RFC
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* 4528. This control makes it possible to conditionally perform an operation
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* if a given assertion is true. In particular, the associated operation should
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* only be processed if the target entry matches the filter contained in this
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* control.
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*/
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public class LDAPAssertionRequestControl
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extends Control
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{
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/**
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* ControlDecoder implentation to decode this control from a ByteString.
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*/
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private final static class Decoder
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implements ControlDecoder<LDAPAssertionRequestControl>
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{
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/**
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* {@inheritDoc}
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*/
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public LDAPAssertionRequestControl decode(boolean isCritical,
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ByteString value)
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throws DirectoryException
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{
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if (value == null)
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{
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Message message = ERR_LDAPASSERT_NO_CONTROL_VALUE.get();
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throw new DirectoryException(ResultCode.PROTOCOL_ERROR, message);
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}
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ASN1Reader reader = ASN1.getReader(value);
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LDAPFilter filter;
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try
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{
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filter = LDAPFilter.decode(reader);
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}
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catch (LDAPException e)
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{
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throw new DirectoryException(ResultCode.valueOf(e.getResultCode()), e
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.getMessageObject(), e.getCause());
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}
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return new LDAPAssertionRequestControl(isCritical, filter);
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}
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public String getOID()
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{
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return OID_LDAP_ASSERTION;
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}
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}
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/**
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* The Control Decoder that can be used to decode this control.
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*/
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public static final ControlDecoder<LDAPAssertionRequestControl> DECODER =
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new Decoder();
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// The unparsed LDAP search filter contained in the request from the client.
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private LDAPFilter rawFilter;
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// The processed search filter
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private SearchFilter filter;
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/**
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* Creates a new instance of this LDAP assertion request control with the
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* provided information.
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*
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* @param isCritical Indicates whether support for this control should be
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* considered a critical part of the server processing.
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* @param rawFilter The unparsed LDAP search filter contained in the
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* request from the client.
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*/
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public LDAPAssertionRequestControl(boolean isCritical, LDAPFilter rawFilter)
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{
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super(OID_LDAP_ASSERTION, isCritical);
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this.rawFilter = rawFilter;
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filter = null;
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}
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/**
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* Writes this control's value to an ASN.1 writer. The value (if any) must be
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* written as an ASN1OctetString.
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*
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* @param writer The ASN.1 output stream to write to.
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* @throws IOException If a problem occurs while writing to the stream.
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*/
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@Override
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public void writeValue(ASN1Writer writer) throws IOException {
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writer.writeStartSequence(UNIVERSAL_OCTET_STRING_TYPE);
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rawFilter.write(writer);
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writer.writeEndSequence();
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}
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/**
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* Retrieves the raw, unparsed filter from the request control.
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*
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* @return The raw, unparsed filter from the request control.
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*/
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public LDAPFilter getRawFilter()
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{
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return rawFilter;
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}
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/**
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* Retrieves the processed search filter for this control.
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*
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* @return The processed search filter for this control.
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*
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* @throws DirectoryException If a problem occurs while attempting to
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* process the search filter.
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*/
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public SearchFilter getSearchFilter()
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throws DirectoryException
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{
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if (filter == null)
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{
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filter = rawFilter.toSearchFilter();
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}
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return filter;
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}
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/**
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* Appends a string representation of this LDAP assertion request control to
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* the provided buffer.
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*
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* @param buffer The buffer to which the information should be appended.
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*/
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@Override
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public void toString(StringBuilder buffer)
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{
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buffer.append("LDAPAssertionRequestControl(criticality=");
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buffer.append(isCritical());
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buffer.append(",filter=\"");
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rawFilter.toString(buffer);
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buffer.append("\")");
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}
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}
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