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.actions; 021 022 023import org.apache.directory.api.asn1.DecoderException; 024import org.apache.directory.api.asn1.ber.Asn1Container; 025import org.apache.directory.api.asn1.ber.grammar.GrammarAction; 026import org.apache.directory.api.asn1.ber.tlv.BerValue; 027import org.apache.directory.api.asn1.ber.tlv.TLV; 028import org.apache.directory.api.i18n.I18n; 029import org.apache.directory.api.util.Strings; 030import org.apache.directory.shared.kerberos.KerberosTime; 031import org.slf4j.Logger; 032import org.slf4j.LoggerFactory; 033 034 035/** 036 * The action used to read the KerberosTime 037 * 038 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 039 */ 040public abstract class AbstractReadKerberosTime<E extends Asn1Container> extends GrammarAction<E> 041{ 042 /** The logger */ 043 private static final Logger LOG = LoggerFactory.getLogger( AbstractReadKerberosTime.class ); 044 045 /** Speedup for logs */ 046 private static final boolean IS_DEBUG = LOG.isDebugEnabled(); 047 048 049 /** 050 * Instantiates a new AbstractReadKerberosTime action. 051 */ 052 public AbstractReadKerberosTime( String name ) 053 { 054 super( name ); 055 } 056 057 058 /** 059 * 060 * set the KerberosTime on the ASN.1 object present in the container 061 * 062 * @param krbtime the KerberosTime decoded from the TLV 063 * @param container the ASN.1 object's container 064 */ 065 protected abstract void setKerberosTime( KerberosTime krbtime, E container ); 066 067 068 /** 069 * {@inheritDoc} 070 */ 071 public final void action( E container ) throws DecoderException 072 { 073 TLV tlv = container.getCurrentTLV(); 074 075 // The Length should not be null and should be 15 076 if ( tlv.getLength() != 15 ) 077 { 078 LOG.error( I18n.err( I18n.ERR_01308_ZERO_LENGTH_TLV ) ); 079 080 // This will generate a PROTOCOL_ERROR 081 throw new DecoderException( I18n.err( I18n.ERR_01309_EMPTY_TLV ) ); 082 } 083 084 // The value is the KerberosTime 085 BerValue value = tlv.getValue(); 086 String date = Strings.utf8ToString( value.getData() ); 087 088 try 089 { 090 KerberosTime krbTime = new KerberosTime( date ); 091 092 if ( IS_DEBUG ) 093 { 094 LOG.debug( "decoded kerberos time is : {}", krbTime ); 095 } 096 097 setKerberosTime( krbTime, container ); 098 } 099 catch ( IllegalArgumentException iae ) 100 { 101 LOG.error( I18n.err( I18n.ERR_01308_ZERO_LENGTH_TLV ) ); 102 103 // This will generate a PROTOCOL_ERROR 104 throw new DecoderException( I18n.err( I18n.ERR_01309_EMPTY_TLV ) ); 105 } 106 } 107}