com.trackstudio.tools
Class ShellClassLoader

java.lang.Object
  java.lang.ClassLoader
      com.trackstudio.tools.ShellClassLoader

public class ShellClassLoader
extends java.lang.ClassLoader

This class is used for control user's abulity to execute some dangerous code from anywhere. It loads allowed classes only

Constructor Summary

protected

ShellClassLoader()

Method Summary

void	addImport(java.lang.String classPattern) Adds class or package name to allowed classes (DO NOT use asteriks to specify a package)
boolean	classAllowed(java.lang.String className)
java.lang.String	getImports()
static java.lang.ClassLoader	getInstance() getting instance of ClassLoader
java.lang.Class	loadClass(java.lang.String name) This is a simple version for external clients since they will always want the class resolved before it is returned to them.
java.lang.Class	loadClass(java.lang.String name, boolean resolve)
void	removeAllImport(java.lang.String classPattern) removes class or package and all it's classes from allowed list
void	removeImport(java.lang.String classPattern) removes class or package from allowed classes list

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

ShellClassLoader

protected ShellClassLoader()

Method Detail

getImports

public java.lang.String getImports()

getInstance

public static java.lang.ClassLoader getInstance()

getting instance of ClassLoader

addImport

public void addImport(java.lang.String classPattern)

Adds class or package name to allowed classes (DO NOT use asteriks to specify a package)

Parameters:

classPattern - pattern to use

removeImport

public void removeImport(java.lang.String classPattern)

removes class or package from allowed classes list

Parameters:

classPattern - pattern of classes names

removeAllImport

public void removeAllImport(java.lang.String classPattern)

removes class or package and all it's classes from allowed list

Parameters:

classPattern - pattern of package name

classAllowed

public boolean classAllowed(java.lang.String className)

Parameters:

className - Class name

Returns:

true if this class allowes

loadClass

public java.lang.Class loadClass(java.lang.String name)
                          throws java.lang.ClassNotFoundException

This is a simple version for external clients since they will always want the class resolved before it is returned to them.

Overrides:

loadClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException

loadClass

public java.lang.Class loadClass(java.lang.String name,
                                 boolean resolve)
                          throws java.lang.ClassNotFoundException

Overrides:

loadClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException