/*
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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 java.util.Iterator;
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import java.util.LinkedHashSet;
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import org.opends.server.core.DirectoryServer;
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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 org.opends.server.protocols.asn1.ASN1Set;
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import org.opends.server.types.Attribute;
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import org.opends.server.types.AttributeType;
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import org.opends.server.types.AttributeValue;
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import org.opends.server.types.DebugLogLevel;
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import static org.opends.server.loggers.debug.DebugLogger.debugCought;
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import static org.opends.server.loggers.debug.DebugLogger.debugEnabled;
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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.LDAPResultCode.*;
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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 defines the data structures and methods to use when interacting
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* with an LDAP attribute, which is the basic unit of information in an LDAP
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* entry.
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*/
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public class LDAPAttribute
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{
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// The set of values for this attribute.
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private ArrayList<ASN1OctetString> values;
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// The attribute type for this attribute.
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private String attributeType;
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/**
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* Creates a new LDAP attribute with the provided type and no values.
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*
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* @param attributeType The attribute type for this attribute.
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*/
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public LDAPAttribute(String attributeType)
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{
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this.attributeType = attributeType;
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values = new ArrayList<ASN1OctetString>(0);
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}
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/**
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* Creates a new LDAP attribute with the provided type and values.
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*
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* @param attributeType The attribute type for this attribute.
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* @param values The set of values for this attribute.
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*/
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public LDAPAttribute(String attributeType, ArrayList<ASN1OctetString> values)
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{
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this.attributeType = attributeType;
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if (values == null)
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{
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this.values = new ArrayList<ASN1OctetString>(0);
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}
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else
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{
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this.values = values;
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}
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}
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/**
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* Creates a new LDAP attribute from the provided attribute.
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*
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* @param attribute The attribute to use to create this LDAP attribute.
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*/
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public LDAPAttribute(Attribute attribute)
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{
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StringBuilder attrName = new StringBuilder(attribute.getName());
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for (String o : attribute.getOptions())
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{
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attrName.append(";");
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attrName.append(o);
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}
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this.attributeType = attrName.toString();
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LinkedHashSet<AttributeValue> attrValues = attribute.getValues();
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if ((attrValues == null) || attrValues.isEmpty())
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{
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values = new ArrayList<ASN1OctetString>(0);
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return;
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}
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values = new ArrayList<ASN1OctetString>(attrValues.size());
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for (AttributeValue v : attrValues)
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{
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values.add(v.getValue().toASN1OctetString());
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}
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}
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/**
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* Retrieves the attribute type for this attribute.
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*
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* @return The attribute type for this attribute.
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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 attribute.
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*
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* @param attributeType The attribute type for this attribute.
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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 set of values for this attribute. The returned list may be
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* modified by the caller.
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*
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* @return The set of values for this attribute.
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*/
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public ArrayList<ASN1OctetString> getValues()
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{
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return values;
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}
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/**
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* Encodes this attribute to an ASN.1 element.
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*
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* @return The ASN.1 element containing the encoded attribute.
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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(new ASN1OctetString(attributeType));
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if ((values == null) || values.isEmpty())
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{
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elements.add(new ASN1Set());
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}
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else
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{
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ArrayList<ASN1Element> valueElements =
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new ArrayList<ASN1Element>(values.size());
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for (ASN1OctetString s : values)
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{
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valueElements.add(s);
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}
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elements.add(new ASN1Set(valueElements));
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}
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return new ASN1Sequence(elements);
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}
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/**
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* Decodes the provided ASN.1 element as an LDAP attribute.
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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 attribute.
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*
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* @throws LDAPException If a problem occurs while trying to decode the
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* provided ASN.1 element as an LDAP attribute.
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*/
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public static LDAPAttribute decode(ASN1Element 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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debugCought(DebugLogLevel.ERROR, e);
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}
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int msgID = MSGID_LDAP_ATTRIBUTE_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_ATTRIBUTE_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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String attributeType;
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try
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{
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attributeType = elements.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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debugCought(DebugLogLevel.ERROR, e);
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}
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int msgID = MSGID_LDAP_ATTRIBUTE_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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ArrayList<ASN1OctetString> values;
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try
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{
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ArrayList<ASN1Element> valueElements =
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elements.get(1).decodeAsSet().elements();
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values = new ArrayList<ASN1OctetString>(valueElements.size());
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for (ASN1Element e : valueElements)
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{
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values.add(e.decodeAsOctetString());
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}
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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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debugCought(DebugLogLevel.ERROR, e);
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}
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int msgID = MSGID_LDAP_ATTRIBUTE_DECODE_VALUES;
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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 LDAPAttribute(attributeType, values);
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}
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/**
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* Retrieves a core attribute containing the information for this LDAP
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* attribute.
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*
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* @return A core attribute containing the information for this LDAP
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* attribute.
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*
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* @throws LDAPException If the provided value is invalid according to the
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* attribute syntax.
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*/
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public Attribute toAttribute()
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throws LDAPException
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{
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String baseName;
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String lowerBaseName;
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int semicolonPos = attributeType.indexOf(';');
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LinkedHashSet<String> options;
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if (semicolonPos > 0)
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{
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baseName = attributeType.substring(0, semicolonPos);
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options = new LinkedHashSet<String>();
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int nextPos = attributeType.indexOf(';', semicolonPos+1);
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while (nextPos > 0)
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{
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String option = attributeType.substring(semicolonPos+1, nextPos);
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if (option.length() > 0)
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{
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options.add(option);
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}
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semicolonPos = nextPos;
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nextPos = attributeType.indexOf(';', semicolonPos+1);
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}
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String option = attributeType.substring(semicolonPos+1);
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if (option.length() > 0)
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{
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options.add(option);
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}
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}
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else
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{
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baseName = attributeType;
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options = new LinkedHashSet<String>(0);
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}
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lowerBaseName = toLowerCase(baseName);
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AttributeType attrType = DirectoryServer.getAttributeType(lowerBaseName);
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if (attrType == null)
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{
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attrType = DirectoryServer.getDefaultAttributeType(lowerBaseName);
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}
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LinkedHashSet<AttributeValue> attributeValues =
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new LinkedHashSet<AttributeValue>(values.size());
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for (ASN1OctetString value : values)
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{
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if (! attributeValues.add(new AttributeValue(attrType, value)))
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{
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int msgID = MSGID_LDAP_ATTRIBUTE_DUPLICATE_VALUES;
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String message = getMessage(msgID, attributeType);
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throw new LDAPException(LDAPResultCode.ATTRIBUTE_OR_VALUE_EXISTS, msgID,
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message);
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}
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}
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return new Attribute(attrType, baseName, options, attributeValues);
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}
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/**
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* Retrieves a string representation of this attribute.
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*
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* @return A string representation of this attribute.
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*/
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public String toString()
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{
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StringBuilder buffer = new StringBuilder();
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toString(buffer);
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return buffer.toString();
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}
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/**
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* Appends a string representation of this attribute to 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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public void toString(StringBuilder buffer)
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{
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buffer.append("LDAPAttribute(type=");
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buffer.append(attributeType);
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buffer.append(", values={");
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if (! values.isEmpty())
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{
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Iterator<ASN1OctetString> iterator = values.iterator();
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iterator.next().toString(buffer);
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while (iterator.hasNext())
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{
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buffer.append(", ");
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iterator.next().toString(buffer);
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}
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}
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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 attribute 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("LDAP Attribute");
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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(" Attribute Values:");
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buffer.append(EOL);
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for (ASN1OctetString value : values)
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{
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value.toString(buffer, indent+4);
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}
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}
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}
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