/*
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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 2008-2009 Sun Microsystems, Inc.
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* Portions copyright 2011-2012 ForgeRock AS
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*/
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package org.opends.server.extensions;
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import org.opends.messages.Message;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import org.opends.server.admin.server.ConfigurationChangeListener;
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import org.opends.server.admin.std.server.MemberVirtualAttributeCfg;
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import org.opends.server.api.Group;
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import org.opends.server.api.VirtualAttributeProvider;
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import org.opends.server.config.ConfigException;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.core.SearchOperation;
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import org.opends.server.types.AttributeValue;
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import org.opends.server.types.AttributeValues;
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import org.opends.server.types.ByteString;
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import org.opends.server.types.ConditionResult;
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import org.opends.server.types.ConfigChangeResult;
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import org.opends.server.types.DebugLogLevel;
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import org.opends.server.types.DN;
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import org.opends.server.types.Entry;
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import org.opends.server.types.InitializationException;
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import org.opends.server.types.MemberList;
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import org.opends.server.types.MembershipException;
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import org.opends.server.types.ResultCode;
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import org.opends.server.types.VirtualAttributeRule;
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import static org.opends.server.loggers.debug.DebugLogger.*;
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import org.opends.server.loggers.debug.DebugTracer;
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/**
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* This class implements a virtual attribute provider that works in conjunction
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* with virtual static groups to generate the values for the member or
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* uniqueMember attribute.
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*/
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public class MemberVirtualAttributeProvider
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extends VirtualAttributeProvider<MemberVirtualAttributeCfg>
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implements ConfigurationChangeListener<MemberVirtualAttributeCfg>
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{
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/**
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* The tracer object for the debug logger.
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*/
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private static final DebugTracer TRACER = getTracer();
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// The current configuration for this member virtual attribute.
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private MemberVirtualAttributeCfg currentConfig;
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/**
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* Creates a new instance of this member virtual attribute provider.
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*/
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public MemberVirtualAttributeProvider()
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{
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super();
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// All initialization should be performed in the
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// initializeVirtualAttributeProvider method.
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public void initializeVirtualAttributeProvider(
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MemberVirtualAttributeCfg configuration)
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throws ConfigException, InitializationException
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{
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configuration.addMemberChangeListener(this);
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currentConfig = configuration;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public boolean isMultiValued()
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{
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return true;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public Set<AttributeValue> getValues(Entry entry,
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VirtualAttributeRule rule)
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{
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if (! currentConfig.isAllowRetrievingMembership())
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{
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return Collections.emptySet();
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}
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Group<?> g =
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DirectoryServer.getGroupManager().getGroupInstance(entry.getDN());
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if (g == null)
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{
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return Collections.emptySet();
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}
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HashSet<AttributeValue> values = new HashSet<AttributeValue>();
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try
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{
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MemberList memberList = g.getMembers();
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while (memberList.hasMoreMembers())
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{
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try
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{
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DN memberDN = memberList.nextMemberDN();
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if (memberDN != null)
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{
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values.add(AttributeValues.create(rule.getAttributeType(),
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memberDN.toString()));
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}
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}
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catch (MembershipException me)
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{
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if (! me.continueIterating())
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{
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break;
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}
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}
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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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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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}
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return Collections.unmodifiableSet(values);
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public boolean hasValue(Entry entry, VirtualAttributeRule rule)
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{
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Group<?> g =
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DirectoryServer.getGroupManager().getGroupInstance(entry.getDN());
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if (g == null)
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{
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return false;
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}
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try
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{
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MemberList memberList = g.getMembers();
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while (memberList.hasMoreMembers())
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{
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try
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{
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DN memberDN = memberList.nextMemberDN();
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if (memberDN != null)
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{
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memberList.close();
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return true;
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}
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}
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catch (MembershipException me)
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{
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if (! me.continueIterating())
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{
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break;
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}
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}
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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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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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}
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return false;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public boolean hasValue(Entry entry, VirtualAttributeRule rule,
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AttributeValue value)
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{
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Group<?> g =
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DirectoryServer.getGroupManager().getGroupInstance(entry.getDN());
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if (g == null)
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{
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return false;
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}
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try
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{
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return g.isMember(DN.decode(value.getValue()));
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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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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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}
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return false;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public boolean hasAnyValue(Entry entry, VirtualAttributeRule rule,
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Collection<AttributeValue> values)
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{
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for (AttributeValue v : values)
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{
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if (hasValue(entry, rule, v))
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{
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return true;
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}
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}
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return false;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public ConditionResult matchesSubstring(Entry entry,
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VirtualAttributeRule rule,
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ByteString subInitial,
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List<ByteString> subAny,
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ByteString subFinal)
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{
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// DNs cannot be used in substring matching.
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return ConditionResult.UNDEFINED;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public ConditionResult greaterThanOrEqualTo(Entry entry,
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VirtualAttributeRule rule,
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AttributeValue value)
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{
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// DNs cannot be used in ordering matching.
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return ConditionResult.UNDEFINED;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public ConditionResult lessThanOrEqualTo(Entry entry,
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VirtualAttributeRule rule,
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AttributeValue value)
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{
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// DNs cannot be used in ordering matching.
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return ConditionResult.UNDEFINED;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public ConditionResult approximatelyEqualTo(Entry entry,
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VirtualAttributeRule rule,
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AttributeValue value)
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{
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// DNs cannot be used in approximate matching.
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return ConditionResult.UNDEFINED;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public boolean isSearchable(VirtualAttributeRule rule,
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SearchOperation searchOperation,
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boolean isPreIndexed)
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{
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return false;
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}
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/**
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* {@inheritDoc}
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*/
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@Override()
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public void processSearch(VirtualAttributeRule rule,
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SearchOperation searchOperation)
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{
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searchOperation.setResultCode(ResultCode.UNWILLING_TO_PERFORM);
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return;
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}
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/**
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* {@inheritDoc}
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*/
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public boolean isConfigurationChangeAcceptable(
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MemberVirtualAttributeCfg configuration,
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List<Message> unacceptableReasons)
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{
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// The new configuration should always be acceptable.
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return true;
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}
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/**
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* {@inheritDoc}
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*/
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public ConfigChangeResult applyConfigurationChange(
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MemberVirtualAttributeCfg configuration)
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{
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// Just accept the new configuration as-is.
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currentConfig = configuration;
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return new ConfigChangeResult(ResultCode.SUCCESS, false);
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}
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}
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