/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, 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.picketbox.util;
import java.net.URL;
import java.security.AccessController;
import java.security.PrivilegedAction;
/**
* Privileged Blocks
* @author Anil.Saldhana@redhat.com
* @since Dec 9, 2008
*/
class SecurityActions
{
static Class<?> loadClass(final Class<?> theClass, final String fqn)
{
return AccessController.doPrivileged(new PrivilegedAction<Class<?>>()
{
public Class<?> run()
{
ClassLoader classLoader = theClass.getClassLoader();
Class<?> clazz = loadClass(classLoader, fqn);
if (clazz == null)
{
classLoader = Thread.currentThread().getContextClassLoader();
clazz = loadClass(classLoader, fqn);
}
return clazz;
}
});
}
static Class<?> loadClass(final ClassLoader cl, final String fqn)
{
return AccessController.doPrivileged(new PrivilegedAction<Class<?>>()
{
public Class<?> run()
{
try
{
return cl.loadClass(fqn);
}
catch (ClassNotFoundException e)
{
}
return null;
}
});
}
/**
* Set the system property
* @param key
* @param value
* @return
*/
static void setSystemProperty(final String key, final String value)
{
AccessController.doPrivileged(new PrivilegedAction<Object>()
{
public Object run()
{
System.setProperty(key, value);
return null;
}
});
}
/**
* Get the system property
* @param key
* @param defaultValue
* @return
*/
static String getSystemProperty(final String key, final String defaultValue)
{
return AccessController.doPrivileged(new PrivilegedAction<String>()
{
public String run()
{
return System.getProperty(key, defaultValue);
}
});
}
/**
* Load a resource based on the passed {@link Class} classloader.
* Failing which try with the Thread Context CL
* @param clazz
* @param resourceName
* @return
*/
static URL loadResource(final Class<?> clazz, final String resourceName)
{
return AccessController.doPrivileged(new PrivilegedAction<URL>()
{
public URL run()
{
URL url = null;
ClassLoader clazzLoader = clazz.getClassLoader();
url = clazzLoader.getResource(resourceName);
if (url == null)
{
clazzLoader = Thread.currentThread().getContextClassLoader();
url = clazzLoader.getResource(resourceName);
}
return url;
}
});
}
}