gomp-20050608-branch/libjava/classpath/java/io/SerializablePermission.java

   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
 113