libjava/java/io/SerializablePermission.java

   1 /* SerializablePermission.java -- Basic permissions related to serialization.
   2    Copyright (C) 1998, 2000 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., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 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.
  52   * <li><code>enableSubstitution</code> - Allows substitution of one object
  53   * for another during serialization or deserialization.
  54   * </ul>
  55   *
  56   * @see java.security.BasicPermission
  57   *
  58   * @version 0.0
  59   *
  60   * @author Aaron M. Renn (arenn@urbanophile.com)
  61   */
  62 public final class SerializablePermission extends BasicPermission
  63 {
  64   static final long serialVersionUID = 8537212141160296410L;
  65
  66 /*
  67  * Class Variables
  68  */
  69
  70 private static final String[] legal_names = { "enableSubclassImplementation",
  71                                               "enableSubstitution" };
  72 /*************************************************************************/
  73
  74 /*
  75  * Constructors
  76  */
  77
  78 /**
  79   * This method initializes a new instance of <code>SerializablePermission</code>
  80   * that has the specified name.
  81   *
  82   * @param name The name of the permission.
  83   *
  84   * @exception IllegalArgumentException If the name is not valid for this class.
  85   */
  86 public
  87 SerializablePermission(String name)
  88 {
  89   this(name, null);
  90 }
  91
  92 /*************************************************************************/
  93
  94 /**
  95   * This method initializes a new instance of <code>SerializablePermission</code>
  96   * that has the specified name and action list.  Note that the action list
  97   * is unused in this class.
  98   *
  99   * @param name The name of the permission.
 100   * @param actions The action list (unused).
 101   *
 102   * @exception IllegalArgumentException If the name is not valid for this class.
 103   */
 104 public
 105 SerializablePermission(String name, String actions)
 106 {
 107   super(name, actions);
 108
 109   for (int i = 0; i < legal_names.length; i++)
 110     if (legal_names[i].equals(name))
 111       return;
 112
 113   throw new IllegalArgumentException("Bad permission name:  " + name);
 114 }
 115
 116
 117 } // class SerializablePermission
 118