libjava/gnu/java/security/x509/X509CRLEntry.java

   1 /* X509CRLEntry.java -- entry in a X.509 CRL.
   2    Copyright (C) 2003 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package gnu.java.security.x509;
  40
  41 import java.io.InputStream;
  42 import java.io.IOException;
  43
  44 import java.math.BigInteger;
  45
  46 import java.security.cert.CRLException;
  47
  48 import java.util.Collections;
  49 import java.util.Date;
  50 import java.util.HashMap;
  51 import java.util.HashSet;
  52 import java.util.Set;
  53
  54 import gnu.java.io.ASN1ParsingException;
  55 import gnu.java.security.OID;
  56 import gnu.java.security.der.DERReader;
  57 import gnu.java.security.der.DERValue;
  58 import gnu.java.security.der.DERWriter;
  59
  60 /**
  61  * A single entry in a X.509 certificate revocation list.
  62  *
  63  * @see X509CRL
  64  * @author Casey Marshall
  65  */
  66 class X509CRLEntry extends java.security.cert.X509CRLEntry
  67 {
  68
  69   // Constants and fields.
  70   // ------------------------------------------------------------------------
  71
  72   /** The DER encoded form of this CRL entry. */
  73   private byte[] encoded;
  74
  75   /** The revoked certificate's serial number. */
  76   private BigInteger serialNo;
  77
  78   /** The date the certificate was revoked. */
  79   private Date revocationDate;
  80
  81   /** The encoded extensions. */
  82   private HashMap extensions;
  83
  84   /** The set of critical extension OIDs. */
  85   private HashSet critOids;
  86
  87   /** the set of non-critical extension OIDs. */
  88   private HashSet nonCritOids;
  89
  90   // Constructor.
  91   // ------------------------------------------------------------------------
  92
  93   /**
  94    * Create a new X.509 certificate revocation list entry from the given
  95    * input stream and CRL version number.
  96    *
  97    * @param version The CRL version.
  98    * @param encoded The stream of DER bytes.
  99    * @throws CRLException If the ASN.1 structure is invalid.
 100    * @throws IOException  If the bytes cannot be read.
 101    */
 102   X509CRLEntry(int version, InputStream encoded)
 103     throws CRLException, IOException
 104   {
 105     super();
 106     extensions = new HashMap();
 107     critOids = new HashSet();
 108     nonCritOids = new HashSet();
 109     try
 110       {
 111         parse(version, encoded);
 112       }
 113     catch (IOException ioe)
 114       {
 115         throw ioe;
 116       }
 117     catch (Exception x)
 118       {
 119         throw new CRLException(x.toString());
 120       }
 121   }
 122
 123   // X509CRLEntry methods.
 124   // ------------------------------------------------------------------------
 125
 126   public boolean equals(Object o)
 127   {
 128     return ((X509CRLEntry) o).serialNo.equals(serialNo) &&
 129            ((X509CRLEntry) o).revocationDate.equals(revocationDate);
 130   }
 131
 132   public int hashCode()
 133   {
 134     return serialNo.hashCode();
 135   }
 136
 137   public byte[] getEncoded() throws CRLException
 138   {
 139     return (byte[]) encoded.clone();
 140   }
 141
 142   public BigInteger getSerialNumber()
 143   {
 144     return serialNo;
 145   }
 146
 147   public Date getRevocationDate()
 148   {
 149     return (Date) revocationDate.clone();
 150   }
 151
 152   public boolean hasExtensions()
 153   {
 154     return ! extensions.isEmpty();
 155   }
 156
 157   public String toString()
 158   {
 159     return "X509CRLEntry serial=" + serialNo + " revocation date="
 160       + revocationDate + " critExt=" + critOids + " ext=" + nonCritOids;
 161   }
 162
 163   // X509Extension methods.
 164   // ------------------------------------------------------------------------
 165
 166   public boolean hasUnsupportedCriticalExtension()
 167   {
 168     return false; // XXX
 169   }
 170
 171   public Set getCriticalExtensionOIDs()
 172   {
 173     return Collections.unmodifiableSet(critOids);
 174   }
 175
 176   public Set getNonCriticalExtensionOIDs()
 177   {
 178     return Collections.unmodifiableSet(nonCritOids);
 179   }
 180
 181   public byte[] getExtensionValue(String oid)
 182   {
 183     byte[] ext = (byte[]) extensions.get(oid);
 184     if (ext != null)
 185       return (byte[]) ext.clone();
 186     return null;
 187   }
 188
 189   // Own methods.
 190   // ------------------------------------------------------------------------
 191
 192   private void parse(int version, InputStream in) throws Exception
 193   {
 194     DERReader der = new DERReader(in);
 195     DERValue entry = der.read();
 196     if (!entry.isConstructed())
 197       throw new ASN1ParsingException("malformed revokedCertificate");
 198     encoded = entry.getEncoded();
 199     int len = 0;
 200     DERValue val = der.read();
 201     serialNo = (BigInteger) val.getValue();
 202     len += DERWriter.definiteEncodingSize(val.getLength())
 203          + val.getLength() + 1;
 204     val = der.read();
 205     revocationDate = (Date) val.getValue();
 206     len += DERWriter.definiteEncodingSize(val.getLength())
 207          + val.getLength() + 1;
 208
 209     if (len < entry.getLength())
 210       {
 211         if (version < 2)
 212           throw new ASN1ParsingException("extra data in CRL entry");
 213         while (len < entry.getLength())
 214           {
 215             val = der.read();
 216             if (!val.isConstructed())
 217               throw new ASN1ParsingException("malformed Extension");
 218             OID extOid = (OID) der.read().getValue();
 219             Boolean critical = Boolean.valueOf(false);
 220             DERValue val2 = der.read();
 221             if (val2.getValue() instanceof Boolean)
 222               {
 223                 critical = (Boolean) val2.getValue();
 224                 val2 = der.read();
 225               }
 226             byte[] ext = (byte[]) val2.getValue();
 227             extensions.put(extOid.toString(), ext);
 228             if (critical.booleanValue())
 229               critOids.add(extOid.toString());
 230             else
 231               nonCritOids.add(extOid.toString());
 232             len += val.getEncodedLength();
 233           }
 234       }
 235   }
 236 }