Source for gnu.javax.net.ssl.provider.Certificate

   1: /* Certificate.java -- SSL certificate message.
   2:    Copyright (C) 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.net.ssl.provider;
  40: 
  41: import java.io.ByteArrayInputStream;
  42: import java.io.PrintWriter;
  43: import java.io.StringWriter;
  44: 
  45: import java.nio.ByteBuffer;
  46: import java.nio.ByteOrder;
  47: 
  48: import java.security.NoSuchAlgorithmException;
  49: import java.security.cert.CertificateException;
  50: import java.security.cert.CertificateFactory;
  51: import java.security.cert.X509Certificate;
  52: 
  53: import java.util.Iterator;
  54: import java.util.LinkedList;
  55: import java.util.List;
  56: 
  57: /**
  58:  * The certificate object. This is used by both the client and the server
  59:  * to send their certificates (if any) to one another.
  60:  *
  61:  * <pre>opaque ASN.1Cert&lt;1..2^24-1&gt;;
  62: 
  63: struct {
  64:   ASN.1Cert certificate_list&lt;0..2^24-1&gt;;
  65: } Certificate;</pre>
  66:  *
  67:  * @author Casey Marshall (csm@gnu.org)
  68:  */
  69: public class Certificate implements Handshake.Body
  70: {
  71: 
  72:   // Fields.
  73:   // -------------------------------------------------------------------------
  74: 
  75:   protected ByteBuffer buffer;
  76:   protected final CertificateType type;
  77: 
  78:   // Constructors.
  79:   // -------------------------------------------------------------------------
  80: 
  81:   public Certificate (final ByteBuffer buffer, final CertificateType type)
  82:   {
  83:     buffer.getClass ();
  84:     type.getClass ();
  85:     this.buffer = buffer.duplicate().order(ByteOrder.BIG_ENDIAN);
  86:     this.type = type;
  87:   }
  88: 
  89:   // Instance methods.
  90:   // -------------------------------------------------------------------------
  91: 
  92:   public int length ()
  93:   {
  94:     return (((buffer.get (0) & 0xFF) << 24)
  95:             | buffer.getShort (1)) + 3;
  96:   }
  97: 
  98:   public List<java.security.cert.Certificate> certificates ()
  99:     throws CertificateException, NoSuchAlgorithmException
 100:   {
 101:     LinkedList<java.security.cert.Certificate> list
 102:       = new LinkedList<java.security.cert.Certificate>();
 103:     CertificateFactory factory = CertificateFactory.getInstance(type.toString());
 104:     int length = (((buffer.get(0) & 0xFF) << 16)
 105:                   | (buffer.getShort(1) & 0xFFFF));
 106:     ByteBuffer b = (ByteBuffer) buffer.duplicate().position(3);
 107:     for (int i = 3; i < length; )
 108:       {
 109:         int length2 = (((b.get () & 0xFF) << 16)
 110:                        | (b.getShort () & 0xFFFF));
 111:         byte[] buf = new byte[length2];
 112:         b.position(i+3);
 113:         b.get (buf);
 114:         list.add(factory.generateCertificate (new ByteArrayInputStream (buf)));
 115:         i += length2 + 3;
 116:         b.position(i);
 117:       }
 118:     return list;
 119:   }
 120: 
 121:   public String toString ()
 122:   {
 123:     return toString (null);
 124:   }
 125: 
 126:   public String toString (final String prefix)
 127:   {
 128:     StringWriter str = new StringWriter();
 129:     PrintWriter out = new PrintWriter(str);
 130:     if (prefix != null)
 131:       out.print (prefix);
 132:     out.println ("struct {");
 133:     try
 134:       {
 135:         List certs = certificates ();
 136:         if (prefix != null)
 137:           out.print (prefix);
 138:         out.print ("  certificateList: [");
 139:         out.print (certs.size ());
 140:         out.println ("] {");
 141:         for (Iterator it = certs.iterator (); it.hasNext (); )
 142:           {
 143:             java.security.cert.Certificate cert =
 144:               (java.security.cert.Certificate) it.next ();
 145:             if (prefix != null)
 146:               out.print (prefix);
 147:             out.print ("    ");
 148:             if (cert instanceof X509Certificate)
 149:               out.print (((X509Certificate) cert).getSubjectDN ());
 150:             else
 151:               out.print (cert);
 152:             out.println (";");
 153:           }
 154:         if (prefix != null)
 155:           out.print (prefix);
 156:         out.println ("  };");
 157:       }
 158:     catch (CertificateException ce)
 159:       {
 160:         if (prefix != null)
 161:           out.print (prefix);
 162:         out.print ("  ");
 163:         out.print (ce);
 164:         out.println (";");
 165:       }
 166:     catch (NoSuchAlgorithmException nsae)
 167:       {
 168:         if (prefix != null)
 169:           out.print (prefix);
 170:         out.print ("  ");
 171:         out.print (nsae);
 172:         out.println (";");
 173:       }
 174:     out.print ("} Certificate;");
 175:     return str.toString();
 176:   }
 177: }