001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020package org.apache.directory.shared.kerberos.codec; 021 022 023import java.io.IOException; 024import java.nio.ByteBuffer; 025 026import org.apache.directory.api.asn1.Asn1Object; 027import org.apache.directory.api.asn1.EncoderException; 028 029 030/** 031 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 032 */ 033public class KerberosEncoder 034{ 035 public static ByteBuffer encode( Asn1Object asn1Obj, boolean isTcp ) throws IOException 036 { 037 ByteBuffer kerberosMessage = null; 038 039 int responseLength = asn1Obj.computeLength(); 040 041 int bufferLen = responseLength; 042 043 if ( isTcp ) 044 { 045 bufferLen += 4; 046 } 047 048 kerberosMessage = ByteBuffer.allocate( bufferLen ); 049 050 if ( isTcp ) 051 { 052 kerberosMessage.putInt( responseLength ); 053 } 054 055 try 056 { 057 asn1Obj.encode( kerberosMessage ); 058 059 kerberosMessage.flip(); 060 061 return kerberosMessage; 062 } 063 catch ( EncoderException e ) 064 { 065 throw new IOException( e.getMessage() ); 066 } 067 } 068}