| /* |
| * 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.shared.kerberos.components; |
| |
| |
| import java.nio.BufferOverflowException; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.directory.api.asn1.Asn1Object; |
| import org.apache.directory.api.asn1.EncoderException; |
| import org.apache.directory.api.asn1.ber.tlv.BerValue; |
| import org.apache.directory.api.asn1.ber.tlv.TLV; |
| import org.apache.directory.api.asn1.ber.tlv.UniversalTag; |
| import org.apache.directory.api.util.Strings; |
| import org.apache.directory.server.i18n.I18n; |
| import org.apache.directory.shared.kerberos.KerberosConstants; |
| import org.apache.directory.shared.kerberos.KerberosTime; |
| import org.apache.directory.shared.kerberos.codec.types.LastReqType; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * The LastReq structure. |
| * |
| * The ASN.1 grammar is : |
| * <pre> |
| * LastReq ::= SEQUENCE OF SEQUENCE { |
| * lr-type [0] Int32, |
| * lr-value [1] KerberosTime |
| * } |
| * </pre> |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class LastReq implements Asn1Object |
| { |
| /** The logger */ |
| private static final Logger LOG = LoggerFactory.getLogger( LastReq.class ); |
| |
| /** Speedup for logs */ |
| private static final boolean IS_DEBUG = LOG.isDebugEnabled(); |
| |
| /** The list of LastReq elements */ |
| private List<LastReqEntry> lastReqs = new ArrayList<LastReqEntry>(); |
| |
| /** The current LastReqEntry being processed */ |
| private LastReqEntry currentLR; |
| |
| // Storage for computed lengths |
| private int lrTypeTagLen[]; |
| private int lrValueTagLen[]; |
| private int lastReqSeqLen[]; |
| private int lastReqSeqSeqLen; |
| |
| |
| /** |
| * Creates a new instance of LastReq. |
| */ |
| public LastReq() |
| { |
| } |
| |
| |
| /** |
| * @return the CurrentLr type |
| */ |
| public LastReqType getCurrentLrType() |
| { |
| return currentLR.getLrType(); |
| } |
| |
| |
| /** |
| * Set the CurrentLr type |
| */ |
| public void setCurrentLrType( LastReqType lrType ) |
| { |
| currentLR.setLrType( lrType ); |
| } |
| |
| |
| /** |
| * @return the CurrentLr value |
| */ |
| public KerberosTime getCurrentLrValue() |
| { |
| return currentLR.getLrValue(); |
| } |
| |
| |
| /** |
| * Set the CurrentLr value |
| */ |
| public void setCurrentLrValue( KerberosTime lrValue ) |
| { |
| currentLR.setLrValue( lrValue ); |
| } |
| |
| |
| /** |
| * @return the CurrentLR |
| */ |
| public LastReqEntry getCurrentLR() |
| { |
| return currentLR; |
| } |
| |
| |
| /** |
| * Create a new currentLR |
| */ |
| public void createNewLR() |
| { |
| currentLR = new LastReqEntry(); |
| lastReqs.add( currentLR ); |
| } |
| |
| |
| /** |
| * Add a new LastReqEntry |
| * @param lastReqEntry The enry to add |
| */ |
| public void addEntry( LastReqEntry lastReqEntry ) |
| { |
| lastReqs.add( lastReqEntry ); |
| } |
| |
| |
| /** |
| * @return the LastReqs |
| */ |
| public List<LastReqEntry> getLastReqs() |
| { |
| return lastReqs; |
| } |
| |
| |
| /** |
| * Compute the LastReq length |
| * |
| * <pre> |
| * LastReq : |
| * |
| * 0x30 L1 LastReq |
| * | |
| * +--> 0x30 L2 |
| * | |
| * +--> 0xA0 L3 lr-type tag |
| * | | |
| * | +--> 0x02 L3-1 lrType (int) |
| * | |
| * +--> 0xA1 0x11 lr-value tag |
| * | |
| * +--> 0x18 0x0F ttt (KerberosString) |
| * </pre> |
| */ |
| public int computeLength() |
| { |
| int i = 0; |
| lastReqSeqLen = new int[lastReqs.size()]; |
| lrTypeTagLen = new int[lastReqs.size()]; |
| lrValueTagLen = new int[lastReqs.size()]; |
| lastReqSeqSeqLen = 0; |
| |
| for ( LastReqEntry lre : lastReqs ) |
| { |
| int lrTypeLen = BerValue.getNbBytes( lre.getLrType().getValue() ); |
| lrTypeTagLen[i] = 1 + TLV.getNbBytes( lrTypeLen ) + lrTypeLen; |
| byte[] lrValyeBytes = lre.getLrValue().getBytes(); |
| lrValueTagLen[i] = 1 + TLV.getNbBytes( lrValyeBytes.length ) + lrValyeBytes.length; |
| |
| lastReqSeqLen[i] = 1 + TLV.getNbBytes( lrTypeTagLen[i] ) + lrTypeTagLen[i] + |
| 1 + TLV.getNbBytes( lrValueTagLen[i] ) + lrValueTagLen[i]; |
| |
| lastReqSeqSeqLen += 1 + TLV.getNbBytes( lastReqSeqLen[i] ) + lastReqSeqLen[i]; |
| i++; |
| } |
| |
| return 1 + TLV.getNbBytes( lastReqSeqSeqLen ) + lastReqSeqSeqLen; |
| } |
| |
| |
| /** |
| * Encode the LastReq message to a PDU. |
| * |
| * <pre> |
| * LastReq : |
| * |
| * 0x30 LL |
| * 0x30 LL |
| * 0xA0 LL |
| * 0x02 0x01 lrType |
| * 0xA1 0x11 |
| * 0x18 0x0F lrValue |
| * </pre> |
| * |
| * @param buffer The buffer where to put the PDU. It should have been allocated |
| * before, with the right size. |
| * @return The constructed PDU. |
| */ |
| public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException |
| { |
| if ( buffer == null ) |
| { |
| throw new EncoderException( I18n.err( I18n.ERR_148 ) ); |
| } |
| |
| try |
| { |
| // The lastRequest SEQ OF Tag |
| buffer.put( UniversalTag.SEQUENCE.getValue() ); |
| buffer.put( TLV.getBytes( lastReqSeqSeqLen ) ); |
| |
| int i = 0; |
| |
| for ( LastReqEntry lre : lastReqs ) |
| { |
| buffer.put( UniversalTag.SEQUENCE.getValue() ); |
| buffer.put( TLV.getBytes( lastReqSeqLen[i] ) ); |
| |
| // the lrType |
| buffer.put( ( byte ) KerberosConstants.LAST_REQ_LR_TYPE_TAG ); |
| buffer.put( TLV.getBytes( lrTypeTagLen[i] ) ); |
| BerValue.encode( buffer, lre.getLrType().getValue() ); |
| |
| // the lrValue tag |
| buffer.put( ( byte ) KerberosConstants.LAST_REQ_LR_VALUE_TAG ); |
| buffer.put( TLV.getBytes( lrValueTagLen[i] ) ); |
| |
| // the lrValue value |
| buffer.put( UniversalTag.GENERALIZED_TIME.getValue() ); |
| buffer.put( ( byte ) 0x0F ); |
| buffer.put( lre.getLrValue().getBytes() ); |
| } |
| } |
| catch ( BufferOverflowException boe ) |
| { |
| LOG.error( I18n.err( I18n.ERR_139, 1 + TLV.getNbBytes( lastReqSeqSeqLen ) |
| + lastReqSeqSeqLen, buffer.capacity() ) ); |
| throw new EncoderException( I18n.err( I18n.ERR_138 ) ); |
| } |
| |
| if ( IS_DEBUG ) |
| { |
| LOG.debug( "LastReq encoding : {}", Strings.dumpBytes( buffer.array() ) ); |
| LOG.debug( "LastReq initial value : {}", toString() ); |
| } |
| |
| return buffer; |
| } |
| |
| |
| /** |
| * @see Object#toString() |
| */ |
| public String toString( String tabs ) |
| { |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append( tabs ).append( "LastReq : \n" ); |
| |
| for ( LastReqEntry lre : lastReqs ) |
| { |
| sb.append( lre.toString( tabs + " " ) ); |
| } |
| |
| return sb.toString(); |
| } |
| |
| |
| /** |
| * @see Object#toString() |
| */ |
| public String toString() |
| { |
| return toString( "" ); |
| } |
| } |