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      1 /*
      2  *  Licensed to the Apache Software Foundation (ASF) under one or more
      3  *  contributor license agreements.  See the NOTICE file distributed with
      4  *  this work for additional information regarding copyright ownership.
      5  *  The ASF licenses this file to You under the Apache License, Version 2.0
      6  *  (the "License"); you may not use this file except in compliance with
      7  *  the License.  You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  */
     17 
     18 /**
     19 * @author Alexander Y. Kleymenov
     20 * @version $Revision$
     21 */
     22 
     23 package org.apache.harmony.security.x509;
     24 
     25 import java.util.Date;
     26 import org.apache.harmony.security.asn1.ASN1Sequence;
     27 import org.apache.harmony.security.asn1.ASN1Type;
     28 import org.apache.harmony.security.asn1.BerInputStream;
     29 
     30 /**
     31  * The class encapsulates the ASN.1 DER encoding/decoding work
     32  * with Validity structure which is the part of X.509 certificate
     33  * (as specified in RFC 3280 -
     34  *  Internet X.509 Public Key Infrastructure.
     35  *  Certificate and Certificate Revocation List (CRL) Profile.
     36  *  http://www.ietf.org/rfc/rfc3280.txt):
     37  *
     38  * <pre>
     39  *  Validity ::= SEQUENCE {
     40  *       notBefore      Time,
     41  *       notAfter       Time
     42  *  }
     43  * </pre>
     44  */
     45 public final class Validity {
     46     /** the value of notBefore field of the structure */
     47     private final Date notBefore;
     48     /** the value of notAfter field of the structure */
     49     private final Date notAfter;
     50     /** the ASN.1 encoded form of Validity */
     51     private byte[] encoding;
     52 
     53     public Validity(Date notBefore, Date notAfter) {
     54         this.notBefore = notBefore;
     55         this.notAfter = notAfter;
     56     }
     57 
     58     /**
     59      * Returns the value of notBefore field of the structure.
     60      */
     61     public Date getNotBefore() {
     62         return notBefore;
     63     }
     64 
     65     /**
     66      * Returns the value of notAfter field of the structure.
     67      */
     68     public Date getNotAfter() {
     69         return notAfter;
     70     }
     71 
     72     /**
     73      * Returns ASN.1 encoded form of this X.509 Validity value.
     74      */
     75     public byte[] getEncoded() {
     76         if (encoding == null) {
     77             encoding = ASN1.encode(this);
     78         }
     79         return encoding;
     80     }
     81 
     82     /**
     83      * ASN.1 DER X.509 Validity encoder/decoder class.
     84      */
     85     public static final ASN1Sequence ASN1
     86         = new ASN1Sequence(new ASN1Type[] {Time.ASN1, Time.ASN1 }) {
     87 
     88         @Override protected Object getDecodedObject(BerInputStream in) {
     89             Object[] values = (Object[]) in.content;
     90             return new Validity((Date) values[0], (Date) values[1]);
     91         }
     92 
     93         @Override protected void getValues(Object object, Object[] values) {
     94             Validity validity = (Validity) object;
     95             values[0] = validity.notBefore;
     96             values[1] = validity.notAfter;
     97         }
     98     };
     99 }
    100