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.kdcReqBody.actions;
021
022
023import org.apache.directory.api.asn1.DecoderException;
024import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
025import org.apache.directory.api.asn1.ber.tlv.BerValue;
026import org.apache.directory.api.asn1.ber.tlv.TLV;
027import org.apache.directory.api.i18n.I18n;
028import org.apache.directory.api.util.Strings;
029import org.apache.directory.shared.kerberos.KerberosTime;
030import org.apache.directory.shared.kerberos.codec.kdcReqBody.KdcReqBodyContainer;
031import org.apache.directory.shared.kerberos.components.KdcReqBody;
032import org.slf4j.Logger;
033import org.slf4j.LoggerFactory;
034
035
036/**
037 * The action used to store the from KerberosTime
038 *
039 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
040 */
041public class StoreFrom extends GrammarAction<KdcReqBodyContainer>
042{
043    /** The logger */
044    private static final Logger LOG = LoggerFactory.getLogger( StoreFrom.class );
045
046    /** Speedup for logs */
047    private static final boolean IS_DEBUG = LOG.isDebugEnabled();
048
049
050    /**
051     * Instantiates a new StoreFrom action.
052     */
053    public StoreFrom()
054    {
055        super( "Stores the From" );
056    }
057
058
059    /**
060     * {@inheritDoc}
061     */
062    public void action( KdcReqBodyContainer kdcReqBodyContainer ) throws DecoderException
063    {
064        TLV tlv = kdcReqBodyContainer.getCurrentTLV();
065
066        // The Length should not be null and should be 15
067        if ( tlv.getLength() != 15 )
068        {
069            LOG.error( I18n.err( I18n.ERR_01308_ZERO_LENGTH_TLV ) );
070
071            // This will generate a PROTOCOL_ERROR
072            throw new DecoderException( I18n.err( I18n.ERR_01309_EMPTY_TLV ) );
073        }
074
075        KdcReqBody kdcReqBody = kdcReqBodyContainer.getKdcReqBody();
076
077        // The value is the KerberosTime
078        BerValue value = tlv.getValue();
079        String date = Strings.utf8ToString( value.getData() );
080
081        try
082        {
083            KerberosTime from = new KerberosTime( date );
084            kdcReqBody.setFrom( from );
085
086            if ( IS_DEBUG )
087            {
088                LOG.debug( "From : {}", from );
089            }
090        }
091        catch ( IllegalArgumentException iae )
092        {
093            LOG.error( I18n.err( I18n.ERR_01308_ZERO_LENGTH_TLV ) );
094
095            // This will generate a PROTOCOL_ERROR
096            throw new DecoderException( I18n.err( I18n.ERR_01309_EMPTY_TLV ) );
097        }
098    }
099}