/*
* @(#)AWTPermission.java 1.28 04/04/21
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package java.awt;
import java.security.BasicPermission;
/**
* This class is for AWT permissions.
* An <code>AWTPermission</code> contains a target name but
* no actions list; you either have the named permission
* or you don't.
*
* <P>
* The target name is the name of the AWT permission (see below). The naming
* convention follows the hierarchical property naming convention.
* Also, an asterisk could be used to represent all AWT permissions.
*
* <P>
* The following table lists all the possible <code>AWTPermission</code>
* target names, and for each provides a description of what the
* permission allows and a discussion of the risks of granting code
* the permission.
* <P>
*
* <table border=1 cellpadding=5 summary="AWTPermission target names, descriptions, and associated risks.">
* <tr>
* <th>Permission Target Name</th>
* <th>What the Permission Allows</th>
* <th>Risks of Allowing this Permission</th>
* </tr>
*
* <tr>
* <td>accessClipboard</td>
* <td>Posting and retrieval of information to and from the AWT clipboard</td>
* <td>This would allow malfeasant code to share
* potentially sensitive or confidential information.</td>
* </tr>
*
* <tr>
* <td>accessEventQueue</td>
* <td>Access to the AWT event queue</td>
* <td>After retrieving the AWT event queue,
* malicious code may peek at and even remove existing events
* from its event queue, as well as post bogus events which may purposefully
* cause the application or applet to misbehave in an insecure manner.</td>
* </tr>
*
* <tr>
* <td>createRobot</td>
* <td>Create java.awt.Robot objects</td>
* <td>The java.awt.Robot object allows code to generate native-level
* mouse and keyboard events as well as read the screen. It could allow
* malicious code to control the system, run other programs, read the
* display, and deny mouse and keyboard access to the user.</td>
* </tr>
*
* <tr>
* <td>fullScreenExclusive</td>
* <td>Enter full-screen exclusive mode</td>
* <td>Entering full-screen exclusive mode allows direct access to
* low-level graphics card memory. This could be used to spoof the
* system, since the program is in direct control of rendering.</td>
* </tr>
*
* <tr>
* <td>listenToAllAWTEvents</td>
* <td>Listen to all AWT events, system-wide</td>
* <td>After adding an AWT event listener,
* malicious code may scan all AWT events dispatched in the system,
* allowing it to read all user input (such as passwords). Each
* AWT event listener is called from within the context of that
* event queue's EventDispatchThread, so if the accessEventQueue
* permission is also enabled, malicious code could modify the
* contents of AWT event queues system-wide, causing the application
* or applet to misbehave in an insecure manner.</td>
* </tr>
*
* <tr>
* <td>readDisplayPixels</td>
* <td>Readback of pixels from the display screen</td>
* <td>Interfaces such as the java.awt.Composite interface or the
* java.awt.Robot class allow arbitrary code to examine pixels on the
* display enable malicious code to snoop on the activities of the user.</td>
* </tr>
*
* <tr>
* <td>replaceKeyboardFocusManager</td>
* <td>Sets the <code>KeyboardFocusManager</code> for
* a particular thread.
* <td>When <code>SecurityManager</code> is installed, the invoking
* thread must be granted this permission in order to replace
* the current <code>KeyboardFocusManager</code>. If permission
* is not granted, a <code>SecurityException</code> will be thrown.
* </tr>
*
* <tr>
* <td>showWindowWithoutWarningBanner</td>
* <td>Display of a window without also displaying a banner warning
* that the window was created by an applet</td>
* <td>Without this warning,
* an applet may pop up windows without the user knowing that they
* belong to an applet. Since users may make security-sensitive
* decisions based on whether or not the window belongs to an applet
* (entering a username and password into a dialog box, for example),
* disabling this warning banner may allow applets to trick the user
* into entering such information.</td>
* </tr>
*
* <tr>
* <td>watchMousePointer</td>
* <td>Getting the information about the mouse pointer position at any
* time</td>
* <td>Constantly watching the mouse pointer,
* an applet can make guesses about what the user is doing, i.e. moving
* the mouse to the lower left corner of the screen most likely means that
* the user is about to launch an application. If a virtual keypad is used
* so that keyboard is emulated using the mouse, an applet may guess what
* is being typed.</td>
* </tr>
*
* <tr>
* <td>setWindowAlwaysOnTop</td>
* <td>Setting always-on-top property of the window: {@link Window#setAlwaysOnTop}</td>
* <td>The malicious window might make itself look and behave like a real full desktop, so that
* information entered by the unsuspecting user is captured and subsequently misused </td>
* </tr>
*
* <tr>
* <td>setAppletStub</td>
* <td>Setting the stub which implements Applet container services</td>
* <td>Malicious code could set an applet's stub and result in unexpected
* behavior or denial of service to an applet.</td>
* </tr>
* </table>
*
* @see java.security.BasicPermission
* @see java.security.Permission
* @see java.security.Permissions
* @see java.security.PermissionCollection
* @see java.lang.SecurityManager
*
* @version 1.28, 04/21/04
*
* @author Marianne Mueller
* @author Roland Schemers
*/
public final class AWTPermission extends BasicPermission {
/** use serialVersionUID from the Java 2 platform for interoperability */
private static final long serialVersionUID = 8890392402588814465L;
/**
* Creates a new <code>AWTPermission</code> with the specified name.
* The name is the symbolic name of the <code>AWTPermission</code>,
* such as "topLevelWindow", "systemClipboard", etc. An asterisk
* may be used to indicate all AWT permissions.
*
* @param name the name of the AWTPermission
*/
public AWTPermission(String name)
{
super(name);
}
/**
* Creates a new <code>AWTPermission</code> object with the specified name.
* The name is the symbolic name of the <code>AWTPermission</code>, and the
* actions string is currently unused and should be <code>null</code>.
*
* @param name the name of the <code>AWTPermission</code>
* @param actions should be <code>null</code>
*/
public AWTPermission(String name, String actions)
{
super(name, actions);
}
}
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