| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.server.core.jndi; |
| |
| |
| import org.apache.directory.server.core.entry.DefaultServerAttribute; |
| import org.apache.directory.server.core.entry.ServerAttribute; |
| import org.apache.directory.server.core.entry.ServerEntry; |
| import org.apache.directory.server.schema.registries.Registries; |
| import org.apache.directory.shared.ldap.constants.SchemaConstants; |
| import org.apache.directory.shared.ldap.schema.AttributeType; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| |
| import javax.naming.NamingException; |
| |
| |
| /** |
| * Contains constants and serialization methods used to implement functionality |
| * associated with RFC 2713 which enables the storage and representation of Java |
| * objects within an LDAP directory. |
| * |
| * @see <a href="http://www.faqs.org/rfcs/rfc2713.html">RFC 2713</a> |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$ |
| */ |
| class JavaLdapSupport |
| { |
| // ------------------------------------------------------------------------ |
| // Attribute Id Constants Used By The Java LDAP BootstrapSchema |
| // ------------------------------------------------------------------------ |
| |
| /** the javaObject attribute */ |
| public static final String JOBJECT_ATTR = "javaObject"; |
| /** the javaContainer attribute */ |
| public static final String JCONTAINER_ATTR = "javaContainer"; |
| /** the javaSerializedObject attribute */ |
| public static final String JSERIALIZEDOBJ_ATTR = "javaSerializedObject"; |
| |
| /** the javaClassName attribute */ |
| public static final String JCLASSNAME_ATTR = "javaClassName"; |
| /** the javaClassNames attribute */ |
| public static final String JCLASSNAMES_ATTR = "javaClassNames"; |
| /** the javaSerializedData attribute */ |
| public static final String JSERIALDATA_ATTR = "javaSerializedData"; |
| |
| |
| // ------------------------------------------------------------------------ |
| // Package Friendly & Private Utility Methods |
| // ------------------------------------------------------------------------ |
| |
| /** |
| * Resusitates an object from a serialized attribute in an entry that |
| * conforms to the specifications for representing Java Objects in an LDAP |
| * Directory (RFC 2713). |
| * |
| * @param attributes the entry representing a serialized object |
| * @return the deserialized object |
| * @throws NamingException if the object cannot be serialized |
| */ |
| static Object deserialize( ServerEntry serverEntry ) throws NamingException |
| { |
| ObjectInputStream in = null; |
| String className = ( String ) serverEntry.get( JCLASSNAME_ATTR ).getString(); |
| |
| try |
| { |
| byte[] data = ( byte[] ) serverEntry.get( JSERIALDATA_ATTR ).getBytes(); |
| in = new ObjectInputStream( new ByteArrayInputStream( data ) ); |
| return in.readObject(); |
| } |
| catch ( Exception e ) |
| { |
| NamingException ne = new NamingException( "De-serialization of '" + className + "' instance failed:\n" |
| + e.getMessage() ); |
| ne.setRootCause( e ); |
| throw ne; |
| } |
| finally |
| { |
| try |
| { |
| if ( in != null ) |
| { |
| in.close(); |
| } |
| } |
| catch ( IOException e ) |
| { |
| throw new NamingException( "object deserialization stream close() failure" ); |
| } |
| } |
| } |
| |
| |
| /** |
| * Serializes an object into a byte array. |
| * |
| * @param obj the object to serialize |
| * @return the object's serialized byte array form |
| * @throws NamingException of the object cannot be serialized |
| */ |
| static byte[] serialize( Object obj ) throws NamingException |
| { |
| ByteArrayOutputStream bytesOut = null; |
| ObjectOutputStream out = null; |
| |
| try |
| { |
| bytesOut = new ByteArrayOutputStream(); |
| out = new ObjectOutputStream( bytesOut ); |
| out.writeObject( obj ); |
| return bytesOut.toByteArray(); |
| } |
| catch ( Exception e ) |
| { |
| NamingException ne = new NamingException( "Serialization of '" + obj + "' failed:\n" + e.getMessage() ); |
| ne.setRootCause( e ); |
| throw ne; |
| } |
| finally |
| { |
| try |
| { |
| if ( out != null ) |
| { |
| out.close(); |
| } |
| } |
| catch ( IOException e ) |
| { |
| throw new NamingException( "object serialization stream close() failure" ); |
| } |
| } |
| } |
| |
| |
| /** |
| * Serializes an object into an entry using the attributes specified in |
| * RFC 2713 to represent the serialized object. |
| * |
| * @param entry the set of attributes representing entry |
| * @param obj the object to serialize |
| * @throws NamingException if the object cannot be serialized |
| */ |
| static void serialize( ServerEntry entry, Object obj, Registries registries ) throws NamingException |
| { |
| /* Let's add the object classes first: |
| * objectClass: top |
| * objectClass: javaObject |
| * objectClass: javaContainer |
| * objectClass: javaSerializedObject |
| */ |
| entry.put( SchemaConstants.OBJECT_CLASS_AT, |
| SchemaConstants.TOP_OC, |
| JOBJECT_ATTR, |
| JCONTAINER_ATTR, |
| JSERIALIZEDOBJ_ATTR ); |
| |
| // Add the javaClassName and javaSerializedData attributes |
| entry.put( JCLASSNAME_ATTR, obj.getClass().getName() ); |
| entry.put( JSERIALDATA_ATTR, serialize( obj ) ); |
| |
| // Add all the class names this object can be cast to: |
| Class<?>[] classes = obj.getClass().getClasses(); |
| AttributeType attributeType = registries.getAttributeTypeRegistry().lookup( JCLASSNAMES_ATTR ); |
| ServerAttribute javaClassNames = new DefaultServerAttribute( attributeType, JCLASSNAMES_ATTR ); |
| |
| for ( int ii = 0; ii < classes.length; ii++ ) |
| { |
| javaClassNames.add( classes[ii].getName() ); |
| } |
| |
| entry.put( javaClassNames ); |
| } |
| } |