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.apReq.actions;
021
022
023import org.apache.directory.api.asn1.DecoderException;
024import org.apache.directory.api.asn1.ber.Asn1Decoder;
025import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
026import org.apache.directory.api.asn1.ber.tlv.TLV;
027import org.apache.directory.api.i18n.I18n;
028import org.apache.directory.shared.kerberos.codec.apReq.ApReqContainer;
029import org.apache.directory.shared.kerberos.codec.ticket.TicketContainer;
030import org.apache.directory.shared.kerberos.messages.ApReq;
031import org.apache.directory.shared.kerberos.messages.Ticket;
032import org.slf4j.Logger;
033import org.slf4j.LoggerFactory;
034
035
036/**
037 * The action used to store the Ticket
038 *
039 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
040 */
041public class StoreTicket extends GrammarAction<ApReqContainer>
042{
043    /** The logger */
044    private static final Logger LOG = LoggerFactory.getLogger( StoreTicket.class );
045
046    /** Speedup for logs */
047    private static final boolean IS_DEBUG = LOG.isDebugEnabled();
048
049
050    /**
051     * Instantiates a new StoreTicket action.
052     */
053    public StoreTicket()
054    {
055        super( "AP-REQ Store Ticket" );
056    }
057
058
059    /**
060     * {@inheritDoc}
061     */
062    public void action( ApReqContainer apReqContainer ) throws DecoderException
063    {
064        TLV tlv = apReqContainer.getCurrentTLV();
065
066        // The Length can't be null
067        if ( tlv.getLength() == 0 )
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        // Now, let's decode the Ticket
076        TicketContainer ticketContainer = new TicketContainer( apReqContainer.getStream() );
077
078        // Decode the Ticket PDU
079        Asn1Decoder.decode( apReqContainer.getStream(), ticketContainer );
080
081        // Update the expected length for the current TLV
082        tlv.setExpectedLength( tlv.getExpectedLength() - tlv.getLength() );
083
084        // Update the parent
085        apReqContainer.updateParent();
086
087        // Store the Ticket in the container
088        Ticket ticket = ticketContainer.getTicket();
089        ApReq apReq = apReqContainer.getApReq();
090        apReq.setTicket( ticket );
091
092        if ( IS_DEBUG )
093        {
094            LOG.debug( "Stored ticket:  {}", ticket );
095        }
096    }
097}