/*
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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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*/
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package org.opends.server.workflowelement.localbackend;
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import java.util.HashSet;
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import java.util.List;
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import java.util.concurrent.locks.Lock;
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import org.opends.server.api.Backend;
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import org.opends.server.api.ClientConnection;
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import org.opends.server.api.plugin.PluginResult;
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import org.opends.server.controls.LDAPAssertionRequestControl;
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import org.opends.server.controls.ProxiedAuthV1Control;
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import org.opends.server.controls.ProxiedAuthV2Control;
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import org.opends.server.core.AccessControlConfigManager;
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import org.opends.server.core.CompareOperation;
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import org.opends.server.core.CompareOperationWrapper;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.core.PluginConfigManager;
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import org.opends.server.loggers.debug.DebugTracer;
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import org.opends.server.types.*;
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import org.opends.server.types.operation.PostOperationCompareOperation;
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import org.opends.server.types.operation.PostResponseCompareOperation;
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import org.opends.server.types.operation.PreOperationCompareOperation;
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import static org.opends.messages.CoreMessages.*;
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import static org.opends.server.loggers.debug.DebugLogger.*;
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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 an operation that may be used to determine whether a
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* specified entry in the Directory Server contains a given attribute-value
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* pair.
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*/
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public class LocalBackendCompareOperation
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extends CompareOperationWrapper
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implements PreOperationCompareOperation, PostOperationCompareOperation,
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PostResponseCompareOperation
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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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/**
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* The backend in which the comparison is to be performed.
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*/
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protected Backend backend;
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/**
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* The client connection for this operation.
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*/
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protected ClientConnection clientConnection;
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/**
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* The DN of the entry to compare.
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*/
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protected DN entryDN;
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/**
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* The entry to be compared.
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*/
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protected Entry entry = null;
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/**
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* Creates a new compare operation based on the provided compare operation.
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*
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* @param compare the compare operation
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*/
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public LocalBackendCompareOperation(CompareOperation compare)
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{
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super(compare);
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LocalBackendWorkflowElement.attachLocalOperation (compare, this);
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}
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/**
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* Retrieves the entry to target with the compare operation.
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*
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* @return The entry to target with the compare operation, or
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* <CODE>null</CODE> if the entry is not yet available.
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*/
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public Entry getEntryToCompare()
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{
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return entry;
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}
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/**
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* Process this compare operation in a local backend.
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*
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* @param wfe
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* The local backend work-flow element.
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* @throws CanceledOperationException
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* if this operation should be cancelled
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*/
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public void processLocalCompare(LocalBackendWorkflowElement wfe)
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throws CanceledOperationException
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{
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boolean executePostOpPlugins = false;
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this.backend = wfe.getBackend();
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clientConnection = getClientConnection();
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// Get the plugin config manager that will be used for invoking plugins.
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PluginConfigManager pluginConfigManager =
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DirectoryServer.getPluginConfigManager();
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// Get a reference to the client connection
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ClientConnection clientConnection = getClientConnection();
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// Check for a request to cancel this operation.
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checkIfCanceled(false);
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// Create a labeled block of code that we can break out of if a problem is
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// detected.
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compareProcessing:
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{
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// Process the entry DN to convert it from the raw form to the form
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// required for the rest of the compare processing.
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entryDN = getEntryDN();
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if (entryDN == null)
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{
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break compareProcessing;
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}
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// If the target entry is in the server configuration, then make sure the
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// requester has the CONFIG_READ privilege.
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if (DirectoryServer.getConfigHandler().handlesEntry(entryDN) &&
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(! clientConnection.hasPrivilege(Privilege.CONFIG_READ, this)))
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{
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appendErrorMessage(ERR_COMPARE_CONFIG_INSUFFICIENT_PRIVILEGES.get());
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setResultCode(ResultCode.INSUFFICIENT_ACCESS_RIGHTS);
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break compareProcessing;
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}
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// Check for a request to cancel this operation.
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checkIfCanceled(false);
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// Grab a read lock on the entry.
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Lock readLock = null;
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for (int i=0; i < 3; i++)
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{
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readLock = LockManager.lockRead(entryDN);
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if (readLock != null)
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{
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break;
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}
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}
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if (readLock == null)
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{
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setResultCode(DirectoryServer.getServerErrorResultCode());
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appendErrorMessage(ERR_COMPARE_CANNOT_LOCK_ENTRY.get(
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String.valueOf(entryDN)));
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break compareProcessing;
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}
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try
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{
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// Get the entry. If it does not exist, then fail.
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try
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{
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entry = DirectoryServer.getEntry(entryDN);
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if (entry == null)
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{
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setResultCode(ResultCode.NO_SUCH_OBJECT);
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appendErrorMessage(
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ERR_COMPARE_NO_SUCH_ENTRY.get(String.valueOf(entryDN)));
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// See if one of the entry's ancestors exists.
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DN parentDN = entryDN.getParentDNInSuffix();
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while (parentDN != null)
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{
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try
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{
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if (DirectoryServer.entryExists(parentDN))
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{
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setMatchedDN(parentDN);
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break;
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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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break;
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}
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parentDN = parentDN.getParentDNInSuffix();
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}
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break compareProcessing;
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}
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}
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catch (DirectoryException de)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, de);
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}
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setResultCode(de.getResultCode());
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appendErrorMessage(de.getMessageObject());
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break compareProcessing;
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}
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// Check to see if there are any controls in the request. If so, then
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// see if there is any special processing required.
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try
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{
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handleRequestControls();
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}
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catch (DirectoryException de)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, de);
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}
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setResponseData(de);
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break compareProcessing;
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}
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// Check to see if the client has permission to perform the
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// compare.
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// FIXME: for now assume that this will check all permission
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// pertinent to the operation. This includes proxy authorization
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// and any other controls specified.
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// FIXME: earlier checks to see if the entry already exists may
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// have already exposed sensitive information to the client.
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try
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{
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if (!AccessControlConfigManager.getInstance()
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.getAccessControlHandler().isAllowed(this))
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{
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setResultCode(ResultCode.INSUFFICIENT_ACCESS_RIGHTS);
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appendErrorMessage(ERR_COMPARE_AUTHZ_INSUFFICIENT_ACCESS_RIGHTS
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.get(String.valueOf(entryDN)));
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break compareProcessing;
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}
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}
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catch (DirectoryException e)
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{
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setResultCode(e.getResultCode());
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appendErrorMessage(e.getMessageObject());
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break compareProcessing;
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}
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// Check for a request to cancel this operation.
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checkIfCanceled(false);
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// Invoke the pre-operation compare plugins.
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executePostOpPlugins = true;
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PluginResult.PreOperation preOpResult =
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pluginConfigManager.invokePreOperationComparePlugins(this);
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if (!preOpResult.continueProcessing())
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{
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setResultCode(preOpResult.getResultCode());
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appendErrorMessage(preOpResult.getErrorMessage());
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setMatchedDN(preOpResult.getMatchedDN());
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setReferralURLs(preOpResult.getReferralURLs());
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break compareProcessing;
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}
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// Get the base attribute type and set of options.
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String baseName;
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HashSet<String> options;
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String rawAttributeType = getRawAttributeType();
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int semicolonPos = rawAttributeType.indexOf(';');
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if (semicolonPos > 0)
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{
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baseName = toLowerCase(rawAttributeType.substring(0, semicolonPos));
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options = new HashSet<String>();
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int nextPos = rawAttributeType.indexOf(';', semicolonPos+1);
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while (nextPos > 0)
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{
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options.add(rawAttributeType.substring(semicolonPos+1, nextPos));
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semicolonPos = nextPos;
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nextPos = rawAttributeType.indexOf(';', semicolonPos+1);
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}
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options.add(rawAttributeType.substring(semicolonPos+1));
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}
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else
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{
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baseName = toLowerCase(rawAttributeType);
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options = null;
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}
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// Actually perform the compare operation.
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AttributeType attrType = getAttributeType();
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if (attrType == null)
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{
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attrType = DirectoryServer.getAttributeType(baseName, true);
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setAttributeType(attrType);
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}
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List<Attribute> attrList = entry.getAttribute(attrType, options);
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if ((attrList == null) || attrList.isEmpty())
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{
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setResultCode(ResultCode.NO_SUCH_ATTRIBUTE);
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if (options == null)
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{
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appendErrorMessage(WARN_COMPARE_OP_NO_SUCH_ATTR.get(
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String.valueOf(entryDN), baseName));
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}
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else
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{
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appendErrorMessage(WARN_COMPARE_OP_NO_SUCH_ATTR_WITH_OPTIONS.get(
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String.valueOf(entryDN), baseName));
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}
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}
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else
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{
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AttributeValue value = AttributeValues.create(attrType,
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getAssertionValue());
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boolean matchFound = false;
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for (Attribute a : attrList)
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{
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if (a.contains(value))
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{
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matchFound = true;
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break;
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}
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}
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if (matchFound)
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{
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setResultCode(ResultCode.COMPARE_TRUE);
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}
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else
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{
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setResultCode(ResultCode.COMPARE_FALSE);
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}
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}
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}
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finally
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{
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LockManager.unlock(entryDN, readLock);
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}
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}
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// Check for a request to cancel this operation.
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checkIfCanceled(false);
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// Invoke the post-operation compare plugins.
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if (executePostOpPlugins)
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{
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PluginResult.PostOperation postOpResult =
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pluginConfigManager.invokePostOperationComparePlugins(this);
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if (!postOpResult.continueProcessing())
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{
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setResultCode(postOpResult.getResultCode());
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appendErrorMessage(postOpResult.getErrorMessage());
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setMatchedDN(postOpResult.getMatchedDN());
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setReferralURLs(postOpResult.getReferralURLs());
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}
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}
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}
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/**
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* Performs any processing required for the controls included in the request.
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*
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* @throws DirectoryException If a problem occurs that should prevent the
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* operation from succeeding.
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*/
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protected void handleRequestControls()
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throws DirectoryException
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{
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List<Control> requestControls = getRequestControls();
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if ((requestControls != null) && (! requestControls.isEmpty()))
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{
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for (int i=0; i < requestControls.size(); i++)
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{
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Control c = requestControls.get(i);
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String oid = c.getOID();
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if (! AccessControlConfigManager.getInstance().
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getAccessControlHandler().isAllowed(entryDN, this, c))
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{
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throw new DirectoryException(ResultCode.INSUFFICIENT_ACCESS_RIGHTS,
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ERR_CONTROL_INSUFFICIENT_ACCESS_RIGHTS.get(oid));
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}
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if (oid.equals(OID_LDAP_ASSERTION))
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{
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LDAPAssertionRequestControl assertControl =
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getRequestControl(LDAPAssertionRequestControl.DECODER);
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try
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{
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SearchFilter filter = assertControl.getSearchFilter();
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// Check if the current user has permission to make
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// this determination.
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if (!AccessControlConfigManager.getInstance().
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getAccessControlHandler().isAllowed(this, entry, filter))
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{
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throw new DirectoryException(
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ResultCode.INSUFFICIENT_ACCESS_RIGHTS,
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ERR_CONTROL_INSUFFICIENT_ACCESS_RIGHTS.get(oid));
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}
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if (! filter.matchesEntry(entry))
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{
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throw new DirectoryException(ResultCode.ASSERTION_FAILED,
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ERR_COMPARE_ASSERTION_FAILED.get(
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String.valueOf(entryDN)));
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}
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}
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catch (DirectoryException de)
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{
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if (de.getResultCode() == ResultCode.ASSERTION_FAILED)
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{
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throw de;
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}
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, de);
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}
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throw new DirectoryException(ResultCode.PROTOCOL_ERROR,
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ERR_COMPARE_CANNOT_PROCESS_ASSERTION_FILTER.get(
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String.valueOf(entryDN),
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de.getMessageObject()));
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}
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}
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else if (oid.equals(OID_PROXIED_AUTH_V1))
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{
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// The requester must have the PROXIED_AUTH privilige in order to
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// be able to use this control.
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if (! clientConnection.hasPrivilege(Privilege.PROXIED_AUTH, this))
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{
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throw new DirectoryException(ResultCode.AUTHORIZATION_DENIED,
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ERR_PROXYAUTH_INSUFFICIENT_PRIVILEGES.get());
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}
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ProxiedAuthV1Control proxyControl =
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getRequestControl(ProxiedAuthV1Control.DECODER);
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Entry authorizationEntry = proxyControl.getAuthorizationEntry();
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setAuthorizationEntry(authorizationEntry);
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if (authorizationEntry == null)
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{
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setProxiedAuthorizationDN(DN.nullDN());
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}
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else
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{
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setProxiedAuthorizationDN(authorizationEntry.getDN());
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}
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}
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else if (oid.equals(OID_PROXIED_AUTH_V2))
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{
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// The requester must have the PROXIED_AUTH privilige in order to
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// be able to use this control.
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if (! clientConnection.hasPrivilege(Privilege.PROXIED_AUTH, this))
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{
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throw new DirectoryException(ResultCode.AUTHORIZATION_DENIED,
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ERR_PROXYAUTH_INSUFFICIENT_PRIVILEGES.get());
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}
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ProxiedAuthV2Control proxyControl =
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getRequestControl(ProxiedAuthV2Control.DECODER);
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Entry authorizationEntry = proxyControl.getAuthorizationEntry();
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setAuthorizationEntry(authorizationEntry);
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if (authorizationEntry == null)
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{
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setProxiedAuthorizationDN(DN.nullDN());
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}
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else
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{
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setProxiedAuthorizationDN(authorizationEntry.getDN());
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}
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}
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// NYI -- Add support for additional controls.
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else if (c.isCritical())
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{
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if ((backend == null) || (! backend.supportsControl(oid)))
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{
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throw new DirectoryException(
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ResultCode.UNAVAILABLE_CRITICAL_EXTENSION,
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ERR_COMPARE_UNSUPPORTED_CRITICAL_CONTROL.get(
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String.valueOf(entryDN), oid));
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}
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}
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}
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}
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}
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}
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