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/** Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.* ORACLE 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.** <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>accessSystemTray</td>* <td>Access to the AWT SystemTray instance</td>* <td>This would allow malicious code to add tray icons to the system tray.* First, such an icon may look like the icon of some known application* (such as a firewall or anti-virus) and order a user to do something unsafe* (with help of balloon messages). Second, the system tray may be glutted with* tray icons so that no one could add a tray icon anymore.</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. Depending on* the implementation, the security warning may not be shown for the windows* used to enter the full-screen exclusive mode (assuming that the {@code* fullScreenExclusive} permission has been granted to this application). Note* that this behavior does not mean that the {@code* showWindowWithoutWarningBanner} permission will be automatically granted to* the application which has the {@code fullScreenExclusive} permission:* non-full-screen windows will continue to be shown with the security* warning.</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>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>** <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>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>toolkitModality</td>* <td>Creating {@link Dialog.ModalityType#TOOLKIT_MODAL TOOLKIT_MODAL} dialogs* and setting the {@link Dialog.ModalExclusionType#TOOLKIT_EXCLUDE* TOOLKIT_EXCLUDE} window property.</td>* <td>When a toolkit-modal dialog is shown from an applet, it blocks all other* applets in the browser. When launching applications from Java Web Start,* its windows (such as the security dialog) may also be blocked by toolkit-modal* dialogs, shown from these applications.</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>* </table>** @see java.security.BasicPermission* @see java.security.Permission* @see java.security.Permissions* @see java.security.PermissionCollection* @see java.lang.SecurityManager*** @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** @throws NullPointerException if <code>name</code> is <code>null</code>.* @throws IllegalArgumentException if <code>name</code> is empty.*/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>** @throws NullPointerException if <code>name</code> is <code>null</code>.* @throws IllegalArgumentException if <code>name</code> is empty.*/public AWTPermission(String name, String actions){super(name, actions);}}
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