/*
* 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.codec.checksum.actions;
import org.apache.directory.shared.asn1.DecoderException;
import org.apache.directory.shared.asn1.ber.grammar.GrammarAction;
import org.apache.directory.shared.asn1.ber.tlv.IntegerDecoder;
import org.apache.directory.shared.asn1.ber.tlv.IntegerDecoderException;
import org.apache.directory.shared.asn1.ber.tlv.TLV;
import org.apache.directory.shared.asn1.ber.tlv.BerValue;
import org.apache.directory.shared.i18n.I18n;
import org.apache.directory.shared.kerberos.codec.checksum.ChecksumContainer;
import org.apache.directory.shared.kerberos.components.Checksum;
import org.apache.directory.shared.kerberos.crypto.checksum.ChecksumType;
import org.apache.directory.shared.util.Strings;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Sets the Checksum's type.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class StoreCksumType extends GrammarAction<ChecksumContainer>
{
/** The logger */
private static final Logger LOG = LoggerFactory.getLogger( StoreCksumType.class );
/** Speedup for logs */
private static final boolean IS_DEBUG = LOG.isDebugEnabled();
/**
* Creates a new instance of ChecksumReadType.
*/
public StoreCksumType()
{
super( "Checksum cksumtype" );
}
/**
* {@inheritDoc}
*/
public void action( ChecksumContainer checksumContainer ) throws DecoderException
{
TLV tlv = checksumContainer.getCurrentTLV();
// The Length should not be null
if ( tlv.getLength() == 0 )
{
LOG.error( I18n.err( I18n.ERR_04066 ) );
// This will generate a PROTOCOL_ERROR
throw new DecoderException( I18n.err( I18n.ERR_04067 ) );
}
Checksum checksum = checksumContainer.getChecksum();
// The Checksum's type is an integer
BerValue value = tlv.getValue();
try
{
int cksumType = IntegerDecoder.parse( value );
checksum.setChecksumType( ChecksumType.getTypeByValue( cksumType ) );
if ( IS_DEBUG )
{
LOG.debug( "cksumType : " + cksumType );
}
}
catch ( IntegerDecoderException ide )
{
LOG.error( I18n.err( I18n.ERR_04070, Strings.dumpBytes( value.getData() ), ide
.getLocalizedMessage() ) );
// This will generate a PROTOCOL_ERROR
throw new DecoderException( ide.getMessage() );
}
}
}