Source for java.io.SerializablePermission

   1: /* SerializablePermission.java -- Basic permissions related to serialization.
   2:    Copyright (C) 1998, 2000, 2003 Free Software Foundation, Inc.
   3: 
   4: This file is 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, or (at your option)
   9: 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; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 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 java.io;
  40: 
  41: import java.security.BasicPermission;
  42: 
  43: /**
  44:   * This class models permissions related to serialization.  As a subclass
  45:   * of <code>BasicPermission</code>, this class has permissions that have
  46:   * a name only.  There is no associated action list.
  47:   * <p>
  48:   * There are currently two allowable permission names for this class:
  49:   * <ul>
  50:   * <li><code>enableSubclassImplementation</code> - Allows a subclass to
  51:   * override the default serialization behavior of objects.</li>
  52:   * <li><code>enableSubstitution</code> - Allows substitution of one object
  53:   * for another during serialization or deserialization.</li>
  54:   * </ul>
  55:   *
  56:   * @see java.security.BasicPermission
  57:   *
  58:   * @author Aaron M. Renn (arenn@urbanophile.com)
  59:   */
  60: public final class SerializablePermission extends BasicPermission
  61: {
  62:   static final long serialVersionUID = 8537212141160296410L;
  63:     
  64:   /*
  65:    * Class Variables
  66:    */
  67: 
  68:   private static final String[] legal_names = { "enableSubclassImplementation",
  69:                             "enableSubstitution" };
  70:   /*
  71:    * Constructors
  72:    */
  73: 
  74:   /**
  75:     * This method initializes a new instance of 
  76:     * <code>SerializablePermission</code>
  77:     * that has the specified name.
  78:     *
  79:     * @param name The name of the permission.
  80:     *
  81:     * @exception IllegalArgumentException If the name is not valid for
  82:     * this class.
  83:     */
  84:   public SerializablePermission(String name)
  85:   {
  86:     this(name, null);
  87:   }
  88: 
  89:   /**
  90:     * This method initializes a new instance of 
  91:     * <code>SerializablePermission</code>
  92:     * that has the specified name and action list.  Note that the action list
  93:     * is unused in this class.
  94:     *
  95:     * @param name The name of the permission.
  96:     * @param actions The action list (unused).
  97:     *
  98:     * @exception IllegalArgumentException If the name is not valid for 
  99:     * this class.
 100:     */
 101:   public SerializablePermission(String name, String actions)
 102:   {
 103:     super(name, actions);
 104: 
 105:     for (int i = 0; i < legal_names.length; i++)
 106:       if (legal_names[i].equals(name))
 107:         return;
 108: 
 109:     throw new IllegalArgumentException("Bad permission name:  " + name);
 110:   }
 111: 
 112: } // class SerializablePermission