001 /* AWTPermission.java -- AWT related permissions
002 Copyright (C) 2000, 2002 Free Software Foundation
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038
039 package java.awt;
040
041 import java.security.BasicPermission;
042
043 /**
044 * This class implements permissions for AWT. This is a named
045 * permission. No actions are defined.
046 *
047 * <p>The following table provides a list of all the possible AWTPermission
048 * permission names with a description of what that permission allows.<br>
049 * <table border=1>
050 * <tr><th>Permission Name</th><th>Permission Allows</th><th>Risks</th</tr>
051 * <tr>
052 * <td><code>accessClipboard</code></td>
053 * <td>posting and reading the AWT clipboard</td>
054 * <td>the clipboard may contain sensitive data</td></tr>
055 * <tr>
056 * <td><code>accessEventQueue</code></td>
057 * <td>access to the AWT event queue</td>
058 * <td>malicious code could remove real events and replace them with bogus
059 * ones, including simulating the user granting permission</td></tr>
060 * <tr>
061 * <td><code>listenToAllAWTEvents</code></td>
062 * <td>listen to system-wide AWT events</td>
063 * <td>malicious code can read passwords entered in an AWT event, and in
064 * combination with accessEventQueue, could fake system events</td></tr>
065 * <tr>
066 * <td><code>showWindowWithoutWarningBanner</code></td>
067 * <td>display a window without a banner notification of insecurity</td>
068 * <td>malicious code could install a Trojan horse applet that looks like
069 * a normal window, and thus steal data like passwords</td></tr>
070 * <tr>
071 * <td><code>readDisplayPixels</code></td>
072 * <td>read back pixels from the display screen</td>
073 * <td>malicious code could snoop on the user's actions</td></tr>
074 * <tr>
075 * <td><code>createRobot</code></td>
076 * <td>create an instance of java.awt.Robot</td>
077 * <td>these objects can generate events as though they were the user; so
078 * malicious code could control the system</td></tr>
079 * <tr>
080 * <td><code>fullScreenExclusive</code></td>
081 * <td>enter full-screen exclusive mode</td>
082 * <td>malicious code could masquerade as a trusted program</td></tr>
083 * </table>
084 *
085 * @author Tom Tromey (tromey@redhat.com)
086 * @since 1.2
087 * @status updated to 1.4
088 */
089 public final class AWTPermission extends BasicPermission
090 {
091 /**
092 * Compatible with JDK 1.2+.
093 */
094 private static final long serialVersionUID = 8890392402588814465L;
095
096 /**
097 * Construct a AWTPermission with the given name.
098 *
099 * @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