libjava/java/awt/AWTPermission.java

   1 /* AWTPermission.java -- AWT related permissions
   2    Copyright (C) 2000, 2002  Free Software Foundation
   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.awt;
  40
  41 import java.security.BasicPermission;
  42
  43 /**
  44  * This class implements permissions for AWT.  This is a named
  45  * permission.  No actions are defined.
  46  *
  47  * <p>The following table provides a list of all the possible AWTPermission
  48  * permission names with a description of what that permission allows.<br>
  49  * <table border=1>
  50  * <tr><th>Permission Name</th><th>Permission Allows</th><th>Risks</th</tr>
  51  * <tr>
  52  *   <td><code>accessClipboard</code></td>
  53  *   <td>posting and reading the AWT clipboard</td>
  54  *   <td>the clipboard may contain sensitive data</td></tr>
  55  * <tr>
  56  *   <td><code>accessEventQueue</code></td>
  57  *   <td>access to the AWT event queue</td>
  58  *   <td>malicious code could remove real events and replace them with bogus
  59  *       ones, including simulating the user granting permission</td></tr>
  60  * <tr>
  61  *   <td><code>listenToAllAWTEvents</code></td>
  62  *   <td>listen to system-wide AWT events</td>
  63  *   <td>malicious code can read passwords entered in an AWT event, and in
  64  *       combination with accessEventQueue, could fake system events</td></tr>
  65  * <tr>
  66  *   <td><code>showWindowWithoutWarningBanner</code></td>
  67  *   <td>display a window without a banner notification of insecurity</td>
  68  *   <td>malicious code could install a Trojan horse applet that looks like
  69  *       a normal window, and thus steal data like passwords</td></tr>
  70  * <tr>
  71  *   <td><code>readDisplayPixels</code></td>
  72  *   <td>read back pixels from the display screen</td>
  73  *   <td>malicious code could snoop on the user's actions</td></tr>
  74  * <tr>
  75  *   <td><code>createRobot</code></td>
  76  *   <td>create an instance of java.awt.Robot</td>
  77  *   <td>these objects can generate events as though they were the user; so
  78  *       malicious code could control the system</td></tr>
  79  * <tr>
  80  *   <td><code>fullScreenExclusive</code></td>
  81  *   <td>enter full-screen exclusive mode</td>
  82  *   <td>malicious code could masquerade as a trusted program</td></tr>
  83  * </table>
  84  *
  85  * @author Tom Tromey (tromey@redhat.com)
  86  * @since 1.2
  87  * @status updated to 1.4
  88  */
  89 public final class AWTPermission extends BasicPermission
  90 {
  91   /**
  92    * Compatible with JDK 1.2+.
  93    */
  94   private static final long serialVersionUID = 8890392402588814465L;
  95
  96   /**
  97    * Construct a AWTPermission with the given name.
  98    *
  99    * @param name the permission name
 100    * @throws NullPointerException if name is null
 101    * @throws IllegalArgumentException if name is invalid
 102    */
 103   public AWTPermission(String name)
 104   {
 105     super(name);
 106   }
 107
 108   /**
 109    * Create a new permission with the specified name. The actions argument
 110    * is ignored, as AWT permissions have no actions.
 111    *
 112    * @param name the permission name
 113    * @param actions ignored
 114    * @throws NullPointerException if name is null
 115    * @throws IllegalArgumentException if name is invalid
 116    */
 117   public AWTPermission(String name, String actions)
 118   {
 119     super(name);
 120   }
 121 } // class AWTPermission