Source for gnu.javax.crypto.keyring.CertificateEntry

   1: /* CertificateEntry.java --
   2:    Copyright (C) 2003, 2006 Free Software Foundation, Inc.
   3: 
   4: This file is a 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 of the License, or (at
   9: your option) 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; if not, write to the Free Software
  18: Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
  19: 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.javax.crypto.keyring;
  40: 
  41: import java.io.DataInputStream;
  42: import java.io.IOException;
  43: import java.security.cert.Certificate;
  44: import java.security.cert.CertificateEncodingException;
  45: import java.security.cert.CertificateException;
  46: import java.security.cert.CertificateFactory;
  47: import java.util.Date;
  48: 
  49: /**
  50:  * An immutable class representing a trusted certificate entry.
  51:  */
  52: public final class CertificateEntry
  53:     extends PrimitiveEntry
  54: {
  55:   public static final int TYPE = 5;
  56:   /** The certificate. */
  57:   private Certificate certificate;
  58: 
  59:   /**
  60:    * Creates a new certificate entry.
  61:    *
  62:    * @param certificate The certificate.
  63:    * @param creationDate The creation date.
  64:    * @param properties The alias.
  65:    * @throws IllegalArgumentException If any argument is null, or if the alias
  66:    *           is empty.
  67:    */
  68:   public CertificateEntry(Certificate certificate, Date creationDate,
  69:                           Properties properties)
  70:   {
  71:     super(TYPE, creationDate, properties);
  72:     if (certificate == null)
  73:       throw new IllegalArgumentException("no certificate");
  74:     this.certificate = certificate;
  75:     this.properties.put("type", certificate.getType());
  76:   }
  77: 
  78:   private CertificateEntry()
  79:   {
  80:     super(TYPE);
  81:   }
  82: 
  83:   public static CertificateEntry decode(DataInputStream in) throws IOException
  84:   {
  85:     CertificateEntry entry = new CertificateEntry();
  86:     entry.properties.decode(in);
  87:     entry.makeCreationDate();
  88:     String type = entry.properties.get("type");
  89:     if (type == null)
  90:       throw new MalformedKeyringException("no certificate type");
  91:     int len = in.readInt();
  92:     MeteredInputStream in2 = new MeteredInputStream(in, len);
  93:     try
  94:       {
  95:         CertificateFactory fact = CertificateFactory.getInstance(type);
  96:         entry.certificate = fact.generateCertificate(in2);
  97:       }
  98:     catch (CertificateException ce)
  99:       {
 100:         throw new MalformedKeyringException(ce.toString());
 101:       }
 102:     if (! in2.limitReached())
 103:       throw new MalformedKeyringException("extra data at end of payload");
 104:     return entry;
 105:   }
 106: 
 107:   /**
 108:    * Returns this entry's certificate.
 109:    *
 110:    * @return The certificate.
 111:    */
 112:   public Certificate getCertificate()
 113:   {
 114:     return certificate;
 115:   }
 116: 
 117:   protected void encodePayload() throws IOException
 118:   {
 119:     try
 120:       {
 121:         payload = certificate.getEncoded();
 122:       }
 123:     catch (CertificateEncodingException cee)
 124:       {
 125:         throw new IOException(cee.toString());
 126:       }
 127:   }
 128: }