public class

AppletSecurity

extends AWTSecurityManager

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

Class Overview

This class defines an applet security policy

Summary

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Inherited Fields

From class java.lang.SecurityManager

Public Constructors
	AppletSecurity() Construct and initialize.

Public Methods
void	checkAccess(Thread t) Applets are not allowed to manipulate threads outside applet thread groups.
synchronized 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.
AppContext	getAppContext() Get the AppContext corresponding to the current context.
ThreadGroup	getThreadGroup() Returns the thread group of the applet.
void	reset() Reset from Properties

Protected Methods
boolean	inThreadGroup(Thread thread) Returns true of the threadgroup of thread is in the applet's own threadgroup.
boolean	inThreadGroup(ThreadGroup g) Returns true if this threadgroup is in the applet's own thread group.

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Inherited Methods

From class sun.awt.AWTSecurityManager

From class java.lang.SecurityManager

void	checkAccept(String host, int port) Throws a `SecurityException` if the calling thread is not permitted to accept a socket connection from the specified host and port number.
void	checkAccess(ThreadGroup g) Throws a `SecurityException` if the calling thread is not allowed to modify the thread group argument.
void	checkAccess(Thread t) Throws a `SecurityException` if the calling thread is not allowed to modify the thread argument.
void	checkAwtEventQueueAccess() Throws a `SecurityException` if the calling thread is not allowed to access the AWT event queue.
void	checkConnect(String host, int port) Throws a `SecurityException` if the calling thread is not allowed to open a socket connection to the specified host and port number.
void	checkConnect(String host, int port, Object context) Throws a `SecurityException` if the specified security context is not allowed to open a socket connection to the specified host and port number.
void	checkCreateClassLoader() Throws a `SecurityException` if the calling thread is not allowed to create a new class loader.
void	checkDelete(String file) Throws a `SecurityException` if the calling thread is not allowed to delete the specified file.
void	checkExec(String cmd) Throws a `SecurityException` if the calling thread is not allowed to create a subprocess.
void	checkExit(int status) Throws a `SecurityException` if the calling thread is not allowed to cause the Java Virtual Machine to halt with the specified status code.
void	checkLink(String lib) Throws a `SecurityException` if the calling thread is not allowed to dynamic link the library code specified by the string argument file.
void	checkListen(int port) Throws a `SecurityException` if the calling thread is not allowed to wait for a connection request on the specified local port number.
void	checkMemberAccess(Class<?> clazz, int which) Throws a `SecurityException` if the calling thread is not allowed to access members.
void	checkMulticast(InetAddress maddr) Throws a `SecurityException` if the calling thread is not allowed to use (join/leave/send/receive) IP multicast.
void	checkMulticast(InetAddress maddr, byte ttl) This method is deprecated. Use #checkPermission(java.security.Permission) instead
void	checkPackageAccess(String pkg) Throws a `SecurityException` if the calling thread is not allowed to access the package specified by the argument.
void	checkPackageDefinition(String pkg) Throws a `SecurityException` if the calling thread is not allowed to define classes in the package specified by the argument.
void	checkPermission(Permission perm) Throws a `SecurityException` if the requested access, specified by the given permission, is not permitted based on the security policy currently in effect.
void	checkPermission(Permission perm, Object context) Throws a `SecurityException` if the specified security context is denied access to the resource specified by the given permission.
void	checkPrintJobAccess() Throws a `SecurityException` if the calling thread is not allowed to initiate a print job request.
void	checkPropertiesAccess() Throws a `SecurityException` if the calling thread is not allowed to access or modify the system properties.
void	checkPropertyAccess(String key) Throws a `SecurityException` if the calling thread is not allowed to access the system property with the specified `key` name.
void	checkRead(String file) Throws a `SecurityException` if the calling thread is not allowed to read the file specified by the string argument.
void	checkRead(FileDescriptor fd) Throws a `SecurityException` if the calling thread is not allowed to read from the specified file descriptor.
void	checkRead(String file, Object context) Throws a `SecurityException` if the specified security context is not allowed to read the file specified by the string argument.
void	checkSecurityAccess(String target) Determines whether the permission with the specified permission target name should be granted or denied.
void	checkSetFactory() Throws a `SecurityException` if the calling thread is not allowed to set the socket factory used by `ServerSocket` or `Socket`, or the stream handler factory used by `URL`.
void	checkSystemClipboardAccess() Throws a `SecurityException` if the calling thread is not allowed to access the system clipboard.
boolean	checkTopLevelWindow(Object window) Returns `false` if the calling thread is not trusted to bring up the top-level window indicated by the `window` argument.
void	checkWrite(FileDescriptor fd) Throws a `SecurityException` if the calling thread is not allowed to write to the specified file descriptor.
void	checkWrite(String file) Throws a `SecurityException` if the calling thread is not allowed to write to the file specified by the string argument.
int	classDepth(String name) This method is deprecated. This type of security checking is not recommended. It is recommended that the `checkPermission` call be used instead.
int	classLoaderDepth() This method is deprecated. This type of security checking is not recommended. It is recommended that the `checkPermission` call be used instead.
ClassLoader	currentClassLoader() This method is deprecated. This type of security checking is not recommended. It is recommended that the `checkPermission` call be used instead.
Class<?>	currentLoadedClass() This method is deprecated. This type of security checking is not recommended. It is recommended that the `checkPermission` call be used instead.
Class[]	getClassContext() Returns the current execution stack as an array of classes.
boolean	getInCheck() This method is deprecated. This type of security checking is not recommended. It is recommended that the `checkPermission` call be used instead.
Object	getSecurityContext() Creates an object that encapsulates the current execution environment.
ThreadGroup	getThreadGroup() Returns the thread group into which to instantiate any new thread being created at the time this is being called.
boolean	inClass(String name) This method is deprecated. This type of security checking is not recommended. It is recommended that the `checkPermission` call be used instead.
boolean	inClassLoader() This method is deprecated. This type of security checking is not recommended. It is recommended that the `checkPermission` call be used instead.

From class java.lang.Object

Object	clone() Creates and returns a copy of this object.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
void	finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
final Class<?>	getClass() Returns the runtime class of this `Object`.
int	hashCode() Returns a hash code value for the object.
final void	notify() Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll() Wakes up all threads that are waiting on this object's monitor.
String	toString() Returns a string representation of the object.
final void	wait() Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
final void	wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
final void	wait(long timeout) Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.

Public Constructors

public AppletSecurity ()

Construct and initialize.

Public Methods

public void checkAccess (Thread t)

Applets are not allowed to manipulate threads outside applet thread groups. However a terminated thread no longer belongs to any group.

Parameters

t	the thread to be checked.

public synchronized void checkAccess (ThreadGroup g)

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

Parameters

g	the thread group to be checked.

public void checkAwtEventQueueAccess ()

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

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

Throws

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

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.

Parameters

pkgname	the package name.

Throws

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

public 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.

Returns

the AppContext corresponding to the current context.

public ThreadGroup getThreadGroup ()

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

Returns

ThreadGroup that new threads are instantiated into

public void reset ()

Reset from Properties

Protected Methods

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. This will return false if there is no current class loader.

Interfaces

Classes

Exceptions

AppletSecurity

Class Overview

Summary

Public Constructors

public AppletSecurity ()

Public Methods

public void checkAccess (Thread t)

Parameters

public synchronized void checkAccess (ThreadGroup g)

Parameters

public void checkAwtEventQueueAccess ()

Throws

public void checkPackageAccess (String pkgname)

Parameters

Throws

See Also

public AppContext getAppContext ()

Returns

See Also

public ThreadGroup getThreadGroup ()

Returns

public void reset ()

Protected Methods

protected boolean inThreadGroup (Thread thread)

protected boolean inThreadGroup (ThreadGroup g)