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.grammar.GrammarAction; 025import org.apache.directory.api.asn1.ber.tlv.TLV; 026import org.apache.directory.api.i18n.I18n; 027import org.apache.directory.shared.kerberos.codec.apReq.ApReqContainer; 028import org.apache.directory.shared.kerberos.messages.ApReq; 029import org.slf4j.Logger; 030import org.slf4j.LoggerFactory; 031 032 033/** 034 * The action used to initialize the AP-REQ object 035 * 036 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 037 */ 038public class ApReqInit extends GrammarAction<ApReqContainer> 039{ 040 /** The logger */ 041 private static final Logger LOG = LoggerFactory.getLogger( ApReqInit.class ); 042 043 044 /** 045 * Instantiates a new ApReqInit action. 046 */ 047 public ApReqInit() 048 { 049 super( "AP-REQ initialization" ); 050 } 051 052 053 /** 054 * {@inheritDoc} 055 */ 056 public void action( ApReqContainer apReqContainer ) throws DecoderException 057 { 058 TLV tlv = apReqContainer.getCurrentTLV(); 059 060 // The Length should not be null 061 if ( tlv.getLength() == 0 ) 062 { 063 LOG.error( I18n.err( I18n.ERR_01308_ZERO_LENGTH_TLV ) ); 064 065 // This will generate a PROTOCOL_ERROR 066 throw new DecoderException( I18n.err( I18n.ERR_01309_EMPTY_TLV ) ); 067 } 068 069 // Create the AP-REQ now 070 ApReq apReq = new ApReq(); 071 072 apReqContainer.setApReq( apReq ); 073 } 074}