libjava/classpath/gnu/javax/crypto/keyring/CertPathEntry.java

   1 /* CertPathEntry.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.ByteArrayOutputStream;
  42 import java.io.DataInputStream;
  43 import java.io.DataOutputStream;
  44 import java.io.IOException;
  45
  46 import java.security.cert.Certificate;
  47 import java.security.cert.CertificateEncodingException;
  48 import java.security.cert.CertificateException;
  49 import java.security.cert.CertificateFactory;
  50
  51 import java.util.Date;
  52
  53 /**
  54  * A primitive entry that contains a path of X.509 certificates.
  55  */
  56 public final class CertPathEntry extends PrimitiveEntry
  57 {
  58
  59   // Constants and fields.
  60   // ------------------------------------------------------------------------
  61
  62   public static final int TYPE = 8;
  63
  64   private Certificate[] path;
  65
  66   // Constructor.
  67   // ------------------------------------------------------------------------
  68
  69   public CertPathEntry(Certificate[] path, Date creationDate,
  70                        Properties properties)
  71   {
  72     super(TYPE, creationDate, properties);
  73     if (path == null || path.length == 0)
  74       {
  75         throw new IllegalArgumentException("no certificate path");
  76       }
  77     this.path = (Certificate[]) path.clone();
  78   }
  79
  80   private CertPathEntry()
  81   {
  82     super(TYPE);
  83   }
  84
  85   // Class method.
  86   // ------------------------------------------------------------------------
  87
  88   public static CertPathEntry decode(DataInputStream in) throws IOException
  89   {
  90     CertPathEntry entry = new CertPathEntry();
  91     entry.properties.decode(in);
  92     entry.makeCreationDate();
  93     int len = in.readInt();
  94     MeteredInputStream in2 = new MeteredInputStream(in, len);
  95     try
  96       {
  97         CertificateFactory fact = CertificateFactory.getInstance("X.509");
  98         entry.path = (Certificate[]) fact.generateCertificates(in2).toArray(
  99                                                                             new Certificate[0]);
 100       }
 101     catch (CertificateException ce)
 102       {
 103         throw new MalformedKeyringException(ce.toString());
 104       }
 105     return entry;
 106   }
 107
 108   // Instance methods.
 109   // ------------------------------------------------------------------------
 110
 111   public Certificate[] getCertPath()
 112   {
 113     return path;
 114   }
 115
 116   protected void encodePayload() throws IOException
 117   {
 118     ByteArrayOutputStream bout = new ByteArrayOutputStream(1024);
 119     byte[] enc = null;
 120     try
 121       {
 122         for (int i = 0; i < path.length; i++)
 123           {
 124             bout.write(path[i].getEncoded());
 125           }
 126       }
 127     catch (CertificateEncodingException cee)
 128       {
 129         throw new IOException(cee.toString());
 130       }
 131     payload = bout.toByteArray();
 132   }
 133 }