/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.wsf.spi.util;
import java.io.InputStream;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
/**
* Security actions for this package
*
* @author alessio.soldano@jboss.com
* @since 19-Jun-2009
*
*/
class SecurityActions
{
/**
* Get context classloader.
*
* @return the current context classloader
*/
static ClassLoader getContextClassLoader()
{
SecurityManager sm = System.getSecurityManager();
if (sm == null)
{
return Thread.currentThread().getContextClassLoader();
}
else
{
return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {
public ClassLoader run()
{
return Thread.currentThread().getContextClassLoader();
}
});
}
}
/**
* Set context classloader.
*
*/
static void setContextClassLoader(final ClassLoader cl)
{
SecurityManager sm = System.getSecurityManager();
if (sm == null)
{
Thread.currentThread().setContextClassLoader(cl);
}
else
{
AccessController.doPrivileged(new PrivilegedAction<Object>() {
public Object run()
{
Thread.currentThread().setContextClassLoader(cl);
return null;
}
});
}
}
/**
* Get resource as stream
*
* @param cl
* @param filename
* @return input stream
* @throws PrivilegedActionException
*/
static InputStream getResourceAsStream(final ClassLoader cl, final String filename)
{
SecurityManager sm = System.getSecurityManager();
if (sm == null)
{
return cl.getResourceAsStream(filename);
}
else
{
return AccessController.doPrivileged(new PrivilegedAction<InputStream>() {
public InputStream run()
{
return cl.getResourceAsStream(filename);
}
});
}
}
/**
* Load a class using the provided classloader
*
* @param name
* @return
* @throws PrivilegedActionException
*/
static Class<?> loadClass(final ClassLoader cl, final String name) throws PrivilegedActionException, ClassNotFoundException
{
SecurityManager sm = System.getSecurityManager();
if (sm == null)
{
return cl.loadClass(name);
}
else
{
return AccessController.doPrivileged(new PrivilegedExceptionAction<Class<?>>() {
public Class<?> run() throws PrivilegedActionException
{
try
{
return cl.loadClass(name);
}
catch (Exception e)
{
throw new PrivilegedActionException(e);
}
}
});
}
}
}