sun.applet
Class AppletSecurity

java.lang.Object
  java.lang.SecurityManager
      sun.awt.AWTSecurityManager
          sun.applet.AppletSecurity

public class AppletSecurity
extends sun.awt.AWTSecurityManager

This class defines an applet security policy

Constructor Summary

AppletSecurity()
Construct and initialize.

Method Summary

void	checkAccess(Thread t) Applets are not allowed to manipulate threads outside applet thread groups.
void	checkAccess(ThreadGroup g) Applets are not allowed to manipulate thread groups outside applet thread groups.
void	checkAwtEventQueueAccess() Tests if a client can get access to the AWT event queue.
void	checkPackageAccess(String pkgname) Throws a SecurityException if the calling thread is not allowed to access the package specified by the argument.
sun.awt.AppContext	getAppContext() Get the AppContext corresponding to the current context.
ThreadGroup	getThreadGroup() Returns the thread group of the applet.
protected boolean	inThreadGroup(Thread thread) Returns true of the threadgroup of thread is in the applet's own threadgroup.
protected boolean	inThreadGroup(ThreadGroup g) Returns true if this threadgroup is in the applet's own thread group.
void	reset() Reset from Properties

Methods inherited from class java.lang.SecurityManager

checkAccept, checkConnect, checkConnect, checkCreateClassLoader, checkDelete, checkExec, checkExit, checkLink, checkListen, checkMemberAccess, checkMulticast, checkMulticast, checkPackageDefinition, checkPermission, checkPermission, checkPrintJobAccess, checkPropertiesAccess, checkPropertyAccess, checkRead, checkRead, checkRead, checkSecurityAccess, checkSetFactory, checkSystemClipboardAccess, checkTopLevelWindow, checkWrite, checkWrite, getClassContext, getSecurityContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AppletSecurity

public AppletSecurity()

Construct and initialize.

Method Detail

reset

public void reset()

Reset from Properties

inThreadGroup

protected boolean inThreadGroup(ThreadGroup g)

Returns true if this threadgroup is in the applet's own thread group. This will return false if there is no current applet class loader.

inThreadGroup

protected boolean inThreadGroup(Thread thread)

Returns true of the threadgroup of thread is in the applet's own threadgroup.

checkAccess

public void checkAccess(Thread t)

Applets are not allowed to manipulate threads outside applet thread groups.

Overrides:

checkAccess in class SecurityManager

Parameters:

t - the thread to be checked.

See Also:

setDaemon, setName, setPriority, checkPermission

checkAccess

public void checkAccess(ThreadGroup g)

Applets are not allowed to manipulate thread groups outside applet thread groups.

Overrides:

checkAccess in class SecurityManager

Parameters:

g - the thread group to be checked.

See Also:

destroy, setDaemon, setMaxPriority, checkPermission

checkPackageAccess

public void checkPackageAccess(String pkgname)

Throws a SecurityException if the calling thread is not allowed to access the package specified by the argument.

This method is used by the loadClass method of class loaders.

The checkPackageAccess method for class SecurityManager calls checkPermission with the RuntimePermission("accessClassInPackage."+pkg) permission.

Overrides:

checkPackageAccess in class SecurityManager

Parameters:

pkg - the package name.

Throws:

SecurityException - if the caller does not have permission to access the specified package.

See Also:

ClassLoader.loadClass(java.lang.String, boolean)

checkAwtEventQueueAccess

public void checkAwtEventQueueAccess()

Tests if a client can get access to the AWT event queue.

This method calls checkPermission with the AWTPermission("accessEventQueue") permission.

Overrides:

checkAwtEventQueueAccess in class SecurityManager

Throws:

SecurityException - if the caller does not have permission to accesss the AWT event queue.

Since:

JDK1.1

See Also:

checkPermission

getThreadGroup

public ThreadGroup getThreadGroup()

Returns the thread group of the applet. We consult the classloader if there is one.

Overrides:

getThreadGroup in class SecurityManager

Returns:

ThreadGroup that new threads are instantiated into

See Also:

ThreadGroup

getAppContext

public sun.awt.AppContext getAppContext()

Get the AppContext corresponding to the current context. The default implementation returns null, but this method may be overridden by various SecurityManagers (e.g. AppletSecurity) to index AppContext objects by the calling context.

Overrides:

getAppContext in class sun.awt.AWTSecurityManager

Returns:

the AppContext corresponding to the current context.

Since:

JDK1.2.1

See Also:

AppContext, SecurityManager