org.apache.velocity.util.introspection
Class SecureUberspector

java.lang.Object
  org.apache.velocity.util.introspection.UberspectImpl
      org.apache.velocity.util.introspection.SecureUberspector

All Implemented Interfaces:

Uberspect, UberspectLoggable, RuntimeServicesAware

public class SecureUberspector
extends UberspectImpl
implements RuntimeServicesAware

Use a custom introspector that prevents classloader related method calls. Use this introspector for situations in which template writers are numerous or untrusted. Specifically, this introspector prevents creation of arbitrary objects or reflection on objects.

To use this introspector, set the following property:

 runtime.introspector.uberspect = org.apache.velocity.util.introspection.SecureUberspector
 

Since:

1.5

Version:

$Id: SecureUberspector.java 718443 2008-11-18 00:01:56Z nbubna $

Author:

Will Glass-Husain

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.velocity.util.introspection.UberspectImpl

UberspectImpl.VelGetterImpl, UberspectImpl.VelMethodImpl, UberspectImpl.VelSetterImpl

Field Summary

Fields inherited from class org.apache.velocity.util.introspection.UberspectImpl

introspector, log

Constructor Summary

SecureUberspector()

Method Summary

Iterator	getIterator(Object obj, Info i) Get an iterator from the given object.
void	init() init - generates the Introspector.
void	setRuntimeServices(RuntimeServices rs) Store the RuntimeServices before the object is initialized..

Methods inherited from class org.apache.velocity.util.introspection.UberspectImpl

getMethod, getPropertyGet, getPropertySet, setLog, setRuntimeLogger

Methods inherited from class java.lang.Object

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

Constructor Detail

SecureUberspector

public SecureUberspector()

Method Detail

init

public void init()

init - generates the Introspector. As the setup code makes sure that the log gets set before this is called, we can initialize the Introspector using the log object.

Specified by:

init in interface Uberspect

Overrides:

init in class UberspectImpl

getIterator

public Iterator getIterator(Object obj,
                            Info i)
                     throws Exception

Get an iterator from the given object. Since the superclass method this secure version checks for execute permission.

Specified by:

getIterator in interface Uberspect

Overrides:

getIterator in class UberspectImpl

Parameters:

obj - object to iterate over

i - line, column, template info

Returns:

Iterator for object

Throws:

Exception

setRuntimeServices

public void setRuntimeServices(RuntimeServices rs)

Store the RuntimeServices before the object is initialized..

Specified by:

setRuntimeServices in interface RuntimeServicesAware

Parameters:

rs - RuntimeServices object for initialization