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

   1: /* ContentType.java -- SSL record layer content type.
   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.EOFException;
  42: import java.io.InputStream;
  43: import java.io.IOException;
  44: 
  45: /**
  46:  * The content type enumeration, which marks packets in the record layer.
  47:  *
  48:  * <pre>
  49: enum { change_cipher_spec(20), alert(21), handshake(22),
  50:        application_data(23), (255) } ContentType;</pre>
  51:  *
  52:  * <p>There is also a "pseudo" content type, <code>client_hello_v2
  53:  * (1)</code>, which is used for backwards compatibility with SSLv2.
  54:  *
  55:  * @author Casey Marshall (rsdio@metastatic.org)
  56:  */
  57: public enum ContentType
  58: {
  59: 
  60:   CLIENT_HELLO_V2    ( 1),
  61:   CHANGE_CIPHER_SPEC (20),
  62:   ALERT              (21),
  63:   HANDSHAKE          (22),
  64:   APPLICATION_DATA   (23);
  65: 
  66:   private int value;
  67: 
  68:   // Constructors.
  69:   // ------------------------------------------------------------------------
  70: 
  71:   private ContentType(int value)
  72:   {
  73:     this.value = value;
  74:   }
  75: 
  76:   static final ContentType forInteger (final int value)
  77:   {
  78:     switch (value & 0xFF)
  79:       {
  80:       case  1: return CLIENT_HELLO_V2;
  81:       case 20: return CHANGE_CIPHER_SPEC;
  82:       case 21: return ALERT;
  83:       case 22: return HANDSHAKE;
  84:       case 23: return APPLICATION_DATA;
  85:       default: return null;
  86:       }
  87:   }
  88: 
  89:   public int getValue()
  90:   {
  91:     return value;
  92:   }
  93: }