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/* X509CRLEntry.java --- X.509 Certificate Revocation List Entry

   Copyright (C) 1999 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version. */

package java.security.cert;

import java.math.BigInteger;

import java.util.Date;

/**

        Abstract class for entries in the CRL (Certificate Revocation

        List). The ASN.1 definition for <I>revokedCertificates</I> is

        revokedCertificates     SEQUENCE OF SEQUENCE  {

             userCertificate         CertificateSerialNumber,

             revocationDate          Time,

             crlEntryExtensions      Extensions OPTIONAL

                                           -- if present, shall be v2

                                  }  OPTIONAL,

        CertificateSerialNumber  ::=  INTEGER

        Time ::= CHOICE {

             utcTime        UTCTime,

             generalTime    GeneralizedTime }

        Extensions  ::=  SEQUENCE SIZE (1..MAX) OF Extension

        Extension  ::=  SEQUENCE  {

             extnID      OBJECT IDENTIFIER,

             critical    BOOLEAN DEFAULT FALSE,

             extnValue   OCTET STRING  }

        For more information consult rfc2459.

        @author Mark Benvenuto

        @since JDK 1.2

*/

public abstract class X509CRLEntry implements X509Extension

{

  /**

     Creates a new X509CRLEntry

  */

  public X509CRLEntry()

  {}

  /**

     Compares this X509CRLEntry to other. It checks if the

     object if instanceOf X509CRLEntry and then checks if

     the encoded form( the inner SEQUENCE) matches.

     @param other An Object to test for equality

     @return true if equal, false otherwise

  */

  public boolean equals(Object other)

  {

    if( other instanceof X509CRLEntry ) {

      try {

        X509CRLEntry xe = (X509CRLEntry) other;

        if( getEncoded().length != xe.getEncoded().length )

          return false;

        byte[] b1 = getEncoded();

        byte[] b2 = xe.getEncoded();

        for( int i = 0; i < b1.length; i++ )

          if( b1[i] != b2[i] )

            return false;

      } catch( CRLException crle ) {

        return false;

      }

      return true;

    }

    return false;

  }

  /**

     Returns a hash code for this X509CRLEntry in its encoded

     form.

     @return A hash code of this class

  */

  public int hashCode()

  {

    return super.hashCode();

  }

  /**

     Gets the DER ASN.1 encoded format for this CRL Entry,

     the inner SEQUENCE.

     @return byte array containg encoded form

     @throws CRLException if an error occurs

  */

  public abstract byte[] getEncoded() throws CRLException;

  /**

     Gets the serial number for <I>userCertificate</I> in

     this X509CRLEntry.

     @return the serial number for this X509CRLEntry.

  */

  public abstract BigInteger getSerialNumber();

  /**

     Gets the revocation date in <I>revocationDate</I> for

     this X509CRLEntry.

     @return the revocation date for this X509CRLEntry.

  */

  public abstract Date getRevocationDate();

  /**

     Checks if this X509CRLEntry has extensions.

     @return true if it has extensions, false otherwise

  */

  public abstract boolean hasExtensions();

  /**

     Returns a string that represents this X509CRLEntry.

     @return a string representing this X509CRLEntry.

  */

  public abstract String toString();

}