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

   1: /* CertificateRequestBuilder.java --
   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.ByteArrayOutputStream;
  42: import java.io.IOException;
  43: import java.nio.ByteBuffer;
  44: import java.util.List;
  45: 
  46: import javax.security.auth.x500.X500Principal;
  47: 
  48: /**
  49:  * Builder for {@link CertificateRequest} objects.
  50:  *
  51:  * @author Casey Marshall (csm@gnu.org)
  52:  */
  53: public class CertificateRequestBuilder extends CertificateRequest
  54:   implements Builder
  55: {
  56:   public CertificateRequestBuilder()
  57:   {
  58:     super(ByteBuffer.allocate(1024));
  59:   }
  60: 
  61:   /* (non-Javadoc)
  62:    * @see gnu.javax.net.ssl.provider.Builder#buffer()
  63:    */
  64:   public ByteBuffer buffer()
  65:   {
  66:     return ((ByteBuffer) buffer.duplicate().limit(length())).slice();
  67:   }
  68: 
  69:   public void setTypes(List<ClientCertificateType> types)
  70:   {
  71:     ensureCapacity(types.size() + 3);
  72:     buffer.put(0, (byte) types.size());
  73:     ByteBuffer b = (ByteBuffer) buffer.duplicate().position(1);
  74:     for (ClientCertificateType type : types)
  75:       b.put((byte) type.getValue());
  76:   }
  77: 
  78:   public void setAuthorities(List<X500Principal> authorities)
  79:   {
  80:     ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
  81:     for (X500Principal auth : authorities)
  82:       {
  83:         byte[] encoded = auth.getEncoded();
  84:         out.write((encoded.length >>> 8) & 0xFF);
  85:         out.write( encoded.length        & 0xFF);
  86:         try
  87:           {
  88:             out.write(encoded);
  89:           }
  90:         catch (IOException ignored)
  91:           {
  92:             // Ignored; we use a ByteArrayOutputStream.
  93:           }
  94:       }
  95:     byte[] auths = out.toByteArray();
  96:     int typesLen = 1 + (buffer.get(0) & 0xFF);
  97:     int len = typesLen + auths.length + 2;
  98:     ensureCapacity(len);
  99:     buffer.putShort(typesLen, (short) auths.length);
 100:     ((ByteBuffer) buffer.duplicate().position(typesLen + 2)).put(auths);
 101:   }
 102: 
 103:   public void ensureCapacity(final int capacity)
 104:   {
 105:     if (buffer.capacity() >= capacity)
 106:       return;
 107:     ByteBuffer newBuffer = ByteBuffer.allocate(capacity);
 108:     newBuffer.duplicate().put(buffer);
 109:     buffer = newBuffer;
 110:   }
 111: }