/*
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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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* Portions Copyright 2006-2007 Sun Microsystems, Inc.
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*/
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package org.opends.server.protocols.ldap;
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import java.util.ArrayList;
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import org.opends.server.protocols.asn1.ASN1Element;
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import org.opends.server.protocols.asn1.ASN1OctetString;
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import org.opends.server.protocols.asn1.ASN1Sequence;
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import static org.opends.server.loggers.debug.DebugLogger.debugCaught;
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import static org.opends.server.loggers.debug.DebugLogger.debugEnabled;
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import org.opends.server.types.DebugLogLevel;
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import static org.opends.server.messages.MessageHandler.*;
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import static org.opends.server.messages.ProtocolMessages.*;
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import static org.opends.server.protocols.ldap.LDAPConstants.*;
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import static org.opends.server.protocols.ldap.LDAPResultCode.*;
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import static org.opends.server.util.ServerConstants.*;
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/**
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* This class defines the structures and methods for an LDAP compare request
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* protocol op, which is used to determine whether a particular entry contains
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* a specified attribute value.
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*/
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public class CompareRequestProtocolOp
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extends ProtocolOp
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{
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// The assertion value for this compare request.
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private ASN1OctetString assertionValue;
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// The DN for this compare request.
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private ASN1OctetString dn;
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// The attribute type for this compare request.
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private String attributeType;
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/**
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* Creates a new compare request protocol op with the provided information.
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*
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* @param dn The DN for this compare request.
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* @param attributeType The attribute type for this compare request.
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* @param assertionValue The assertion value for this compare request.
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*/
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public CompareRequestProtocolOp(ASN1OctetString dn, String attributeType,
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ASN1OctetString assertionValue)
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{
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this.dn = dn;
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this.attributeType = attributeType;
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this.assertionValue = assertionValue;
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}
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/**
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* Retrieves the DN for this compare request.
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*
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* @return The DN for this compare request.
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*/
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public ASN1OctetString getDN()
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{
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return dn;
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}
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/**
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* Specifies the DN for this compare request.
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*
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* @param dn The DN for this compare request.
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*/
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public void setDN(ASN1OctetString dn)
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{
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this.dn = dn;
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}
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/**
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* Retrieves the attribute type for this compare request.
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*
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* @return The attribute type for this compare request.
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*/
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public String getAttributeType()
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{
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return attributeType;
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}
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/**
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* Specifies the attribute type for this compare request.
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*
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* @param attributeType The attribute type for this compare request.
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*/
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public void setAttributeType(String attributeType)
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{
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this.attributeType = attributeType;
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}
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/**
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* Retrieves the assertion value for this compare request.
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*
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* @return The assertion value for this compare request.
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*/
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public ASN1OctetString getAssertionValue()
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{
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return assertionValue;
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}
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/**
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* Specifies the assertion value for this compare request.
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*
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* @param assertionValue The assertion value for this compare request.
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*/
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public void setAssertionValue(ASN1OctetString assertionValue)
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{
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this.assertionValue = assertionValue;
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}
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/**
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* Retrieves the BER type for this protocol op.
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*
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* @return The BER type for this protocol op.
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*/
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public byte getType()
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{
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return OP_TYPE_COMPARE_REQUEST;
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}
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/**
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* Retrieves the name for this protocol op type.
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*
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* @return The name for this protocol op type.
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*/
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public String getProtocolOpName()
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{
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return "Compare Request";
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}
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/**
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* Encodes this protocol op to an ASN.1 element suitable for including in an
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* LDAP message.
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*
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* @return The ASN.1 element containing the encoded protocol op.
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*/
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public ASN1Element encode()
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{
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ArrayList<ASN1Element> elements = new ArrayList<ASN1Element>(2);
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elements.add(dn);
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ArrayList<ASN1Element> avaElements = new ArrayList<ASN1Element>(2);
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avaElements.add(new ASN1OctetString(attributeType));
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avaElements.add(assertionValue);
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elements.add(new ASN1Sequence(avaElements));
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return new ASN1Sequence(OP_TYPE_COMPARE_REQUEST, elements);
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}
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/**
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* Decodes the provided ASN.1 element as an LDAP compare request protocol op.
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*
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* @param element The ASN.1 element to decode.
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*
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* @return The decoded LDAP compare request protocol op.
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*
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* @throws LDAPException If a problem occurs while attempting to decode the
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* ASN.1 element as a compare request protocol op.
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*/
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public static CompareRequestProtocolOp decodeCompareRequest(ASN1Element
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element)
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throws LDAPException
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{
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ArrayList<ASN1Element> elements;
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try
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{
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elements = element.decodeAsSequence().elements();
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}
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catch (Exception e)
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{
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if (debugEnabled())
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{
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debugCaught(DebugLogLevel.ERROR, e);
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}
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int msgID = MSGID_LDAP_COMPARE_REQUEST_DECODE_SEQUENCE;
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String message = getMessage(msgID, String.valueOf(e));
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throw new LDAPException(PROTOCOL_ERROR, msgID, message, e);
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}
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int numElements = elements.size();
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if (numElements != 2)
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{
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int msgID = MSGID_LDAP_COMPARE_REQUEST_DECODE_INVALID_ELEMENT_COUNT;
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String message = getMessage(msgID, numElements);
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throw new LDAPException(PROTOCOL_ERROR, msgID, message);
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}
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ASN1OctetString dn;
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try
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{
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dn = elements.get(0).decodeAsOctetString();
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}
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catch (Exception e)
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{
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if (debugEnabled())
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{
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debugCaught(DebugLogLevel.ERROR, e);
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}
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int msgID = MSGID_LDAP_COMPARE_REQUEST_DECODE_DN;
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String message = getMessage(msgID, String.valueOf(e));
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throw new LDAPException(PROTOCOL_ERROR, msgID, message, e);
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}
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ArrayList<ASN1Element> avaElements;
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try
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{
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avaElements = elements.get(1).decodeAsSequence().elements();
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}
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catch (Exception e)
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{
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if (debugEnabled())
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{
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debugCaught(DebugLogLevel.ERROR, e);
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}
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int msgID = MSGID_LDAP_COMPARE_REQUEST_DECODE_AVA;
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String message = getMessage(msgID, String.valueOf(e));
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throw new LDAPException(PROTOCOL_ERROR, msgID, message, e);
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}
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numElements = avaElements.size();
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if (numElements != 2)
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{
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int msgID = MSGID_LDAP_COMPARE_REQUEST_DECODE_AVA_COUNT;
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String message = getMessage(msgID, numElements);
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throw new LDAPException(PROTOCOL_ERROR, msgID, message);
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}
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String attributeType;
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try
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{
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attributeType = avaElements.get(0).decodeAsOctetString().stringValue();
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}
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catch (Exception e)
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{
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if (debugEnabled())
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{
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debugCaught(DebugLogLevel.ERROR, e);
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}
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int msgID = MSGID_LDAP_COMPARE_REQUEST_DECODE_TYPE;
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String message = getMessage(msgID, String.valueOf(e));
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throw new LDAPException(PROTOCOL_ERROR, msgID, message, e);
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}
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ASN1OctetString assertionValue;
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try
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{
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assertionValue = avaElements.get(1).decodeAsOctetString();
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}
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catch (Exception e)
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{
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if (debugEnabled())
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{
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debugCaught(DebugLogLevel.ERROR, e);
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}
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int msgID = MSGID_LDAP_COMPARE_REQUEST_DECODE_VALUE;
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String message = getMessage(msgID, String.valueOf(e));
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throw new LDAPException(PROTOCOL_ERROR, msgID, message, e);
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}
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return new CompareRequestProtocolOp(dn, attributeType, assertionValue);
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}
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/**
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* Appends a string representation of this LDAP protocol op to the provided
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* buffer.
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*
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* @param buffer The buffer to which the string should be appended.
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*/
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public void toString(StringBuilder buffer)
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{
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buffer.append("CompareRequest(dn=");
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dn.toString(buffer);
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buffer.append(", attribute=");
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buffer.append(attributeType);
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buffer.append(", value=");
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assertionValue.toString(buffer);
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buffer.append(")");
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}
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/**
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* Appends a multi-line string representation of this LDAP protocol op to the
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* 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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* @param indent The number of spaces from the margin that the lines should
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* be indented.
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*/
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public void toString(StringBuilder buffer, int indent)
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{
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StringBuilder indentBuf = new StringBuilder(indent);
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for (int i=0 ; i < indent; i++)
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{
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indentBuf.append(' ');
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}
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buffer.append(indentBuf);
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buffer.append("Compare Request");
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buffer.append(EOL);
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buffer.append(indentBuf);
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buffer.append(" Target DN: ");
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dn.toString(buffer);
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buffer.append(EOL);
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buffer.append(indentBuf);
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buffer.append(" Attribute Type: ");
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buffer.append(attributeType);
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buffer.append(EOL);
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buffer.append(indentBuf);
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buffer.append(" Assertion Value:");
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buffer.append(EOL);
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assertionValue.toString(buffer, indent+4);
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}
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}
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