| /* |
| * 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 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.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * The AdAndOr structure is used to store a AD-AND-OR associated to a type. |
| * |
| * The ASN.1 grammar is : |
| * <pre> |
| * AD-AND-OR ::= SEQUENCE { |
| * condition-count [0] Int32, |
| * elements [1] <AuthorizationData> |
| * } |
| * </pre> |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class AdAndOr implements Asn1Object |
| { |
| /** The logger */ |
| private static final Logger LOG = LoggerFactory.getLogger( AdAndOr.class ); |
| |
| /** Speedup for logs */ |
| private static final boolean IS_DEBUG = LOG.isDebugEnabled(); |
| |
| /** The condition-count */ |
| private int conditionCount; |
| |
| /** The elements */ |
| private AuthorizationData elements; |
| |
| // Storage for computed lengths |
| private int conditionCountTagLength; |
| private int elementsTagLength; |
| private int adAndOrSeqLength; |
| |
| |
| /** |
| * Creates a new instance of AdAndOr |
| */ |
| public AdAndOr() |
| { |
| } |
| |
| |
| /** |
| * @return the conditionCount |
| */ |
| public int getConditionCount() |
| { |
| return conditionCount; |
| } |
| |
| |
| /** |
| * @param conditionCount the conditionCount to set |
| */ |
| public void setConditionCount( int conditionCount ) |
| { |
| this.conditionCount = conditionCount; |
| } |
| |
| |
| /** |
| * @return the elements |
| */ |
| public AuthorizationData getElements() |
| { |
| return elements; |
| } |
| |
| |
| /** |
| * @param elements the elements to set |
| */ |
| public void setElements( AuthorizationData elements ) |
| { |
| this.elements = elements; |
| } |
| |
| |
| /** |
| * Compute the AD-AND-OR length |
| * <pre> |
| * 0x30 L1 AD-AND-OR sequence |
| * | |
| * +--> 0xA1 L2 condition count tag |
| * | | |
| * | +--> 0x02 L2-1 condition count (int) |
| * | |
| * +--> 0xA2 L3 elements tag |
| * | |
| * +--> 0x30 L3-1 elements (AuthorizationData) |
| * </pre> |
| */ |
| @Override |
| public int computeLength() |
| { |
| // Compute the condition count length |
| int conditionCountLength = BerValue.getNbBytes( conditionCount ); |
| conditionCountTagLength = 1 + TLV.getNbBytes( conditionCountLength ) + conditionCountLength; |
| adAndOrSeqLength = 1 + TLV.getNbBytes( conditionCountTagLength ) + conditionCountTagLength; |
| |
| // Compute the elements length |
| elementsTagLength = elements.computeLength(); |
| adAndOrSeqLength += 1 + TLV.getNbBytes( elementsTagLength ) + elementsTagLength; |
| |
| // Compute the whole sequence length |
| return 1 + TLV.getNbBytes( adAndOrSeqLength ) + adAndOrSeqLength; |
| } |
| |
| |
| /** |
| * Encode the AD-AND-OR message to a PDU. |
| * |
| * @param buffer The buffer where to put the PDU. It should have been allocated |
| * before, with the right size. |
| * @return The constructed PDU. |
| */ |
| @Override |
| public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException |
| { |
| if ( buffer == null ) |
| { |
| throw new EncoderException( I18n.err( I18n.ERR_148 ) ); |
| } |
| |
| try |
| { |
| // The AD-AND-OR SEQ OF Tag |
| buffer.put( UniversalTag.SEQUENCE.getValue() ); |
| buffer.put( TLV.getBytes( adAndOrSeqLength ) ); |
| |
| // the condition-count |
| buffer.put( ( byte ) KerberosConstants.AD_AND_OR_CONDITION_COUNT_TAG ); |
| buffer.put( ( byte ) conditionCountTagLength ); |
| BerValue.encode( buffer, conditionCount ); |
| |
| // the elements |
| buffer.put( ( byte ) KerberosConstants.AD_AND_OR_ELEMENTS_TAG ); |
| buffer.put( ( byte ) elementsTagLength ); |
| |
| elements.encode( buffer ); |
| } |
| catch ( BufferOverflowException boe ) |
| { |
| LOG.error( I18n.err( I18n.ERR_139, 1 + TLV.getNbBytes( adAndOrSeqLength ) |
| + adAndOrSeqLength, buffer.capacity() ) ); |
| throw new EncoderException( I18n.err( I18n.ERR_138 ), boe ); |
| } |
| |
| if ( IS_DEBUG ) |
| { |
| LOG.debug( "AD-AND-OR encoding : {}", Strings.dumpBytes( buffer.array() ) ); |
| LOG.debug( "AD-AND-OR initial value : {}", this ); |
| } |
| |
| return buffer; |
| } |
| |
| |
| /** |
| * @see Object#toString() |
| */ |
| public String toString() |
| { |
| return toString( "" ); |
| } |
| |
| |
| /** |
| * @see Object#toString() |
| */ |
| public String toString( String tabs ) |
| { |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append( tabs ).append( "AD-AND-OR : {\n" ); |
| sb.append( tabs ).append( " condition-count: " ).append( conditionCount ).append( '\n' ); |
| sb.append( tabs + " elements:" ).append( elements ).append( '\n' ); |
| sb.append( tabs + "}\n" ); |
| |
| return sb.toString(); |
| } |
| } |