nz.org.riskscape.engine.function.FunctionClassLoader

All Implemented Interfaces:: Closeable, AutoCloseable

public class FunctionClassLoader extends URLClassLoader

Each JavaFunction may have classes loaded from its own FunctionClassLoader.

These should inherit from the Engine's class loader, so that the functions can access the core classes.

TODO User-defined functions are in this form a sort of Riskscape-sanctioned malware vector. There is a ticket, https://bugs.riskscape.org.nz/issues/434, that has a bunch of mitigations for making this less ropey.

Constructor Summary

Constructors

Constructor

Description

FunctionClassLoader(URL[] urls, ClassLoader parent)

Construtor
Method Summary

Modifier and Type

Method

Description

boolean

equals(Object obj)

URL

getResource(String name)

InputStream

getResourceAsStream(String name)

Enumeration<URL>

getResources(String name)

int

hashCode()

protected Class<?>

loadClass(String name, boolean resolve)

Methods inherited from class java.net.URLClassLoader
addURL, close, definePackage, findClass, findResource, findResources, getPermissions, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader
defineClass, defineClass

Methods inherited from class java.lang.ClassLoader
clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- FunctionClassLoader
  
  public FunctionClassLoader(URL[] urls, ClassLoader parent)
  
  Construtor
  
  Parameters:
  
  urls - Array of urls with own libraries and all exported libraries of plugins that are required to this plugin
  
  parent -
Method Details
- loadClass
  
  protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException
  
  Overrides:
  
  loadClass in class ClassLoader
  
  Throws:
  
  ClassNotFoundException
- getResource
  
  public URL getResource(String name)
  
  Overrides:
  
  getResource in class ClassLoader
- getResources
  
  public Enumeration<URL> getResources(String name) throws IOException
  
  Overrides:
  
  getResources in class ClassLoader
  
  Throws:
  
  IOException
- getResourceAsStream
  
  public InputStream getResourceAsStream(String name)
  
  Overrides:
  
  getResourceAsStream in class URLClassLoader
- hashCode
  
  public int hashCode()
  
  Overrides:
  
  hashCode in class Object
- equals
  
  public boolean equals(Object obj)
  
  Overrides:
  
  equals in class Object

Class FunctionClassLoader

Constructor Summary

Method Summary

Methods inherited from class java.net.URLClassLoader

Methods inherited from class java.security.SecureClassLoader

Methods inherited from class java.lang.ClassLoader

Methods inherited from class java.lang.Object

Constructor Details

FunctionClassLoader

Method Details

loadClass

getResource

getResources

getResourceAsStream

hashCode

equals