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/*
* JBoss, Home of Professional Open Source
* Copyright 2007, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.security.client;
import java.lang.reflect.Constructor;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import org.jboss.security.PicketBoxMessages;
//$Id$
/**
* Factory to return SecurityClient instances
* @author [email protected]
* @since May 1, 2007
* @version $Revision$
*/
public class SecurityClientFactory
{
private static String defaultClient = "org.jboss.security.client.JBossSecurityClient";
/**
* Return the default Security Client
* The default Security Client is of type
* "org.jboss.security.client.JBossSecurityClient"
* @return
* @throws Exception
*/
public static SecurityClient getSecurityClient() throws Exception
{
return getSC(defaultClient);
}
/**
* Return a security client of type
* @param client FQN of the security client implementation
* @return
* @throws Exception
*/
public static SecurityClient getSecurityClient(String client) throws Exception
{
return getSC(client);
}
/**
* Obtain a Security Client
* @param clazz Class object that is of SecurityClient Type
* @return
* @throws Exception
*/
public static SecurityClient getSecurityClient(Class> clazz)
throws Exception
{
if(SecurityClient.class.isAssignableFrom(clazz) == false)
throw PicketBoxMessages.MESSAGES.invalidType(SecurityClient.class.getName());
//Use reflection to invoke the constructors
Constructor> ctr = clazz.getConstructor(new Class[]{});
return (SecurityClient) ctr.newInstance(new Object[]{});
}
@SuppressWarnings("unchecked")
private static SecurityClient getSC(final String client) throws PrivilegedActionException
{
return (SecurityClient)AccessController.doPrivileged(new PrivilegedExceptionAction()
{
public Object run() throws ClassNotFoundException, InstantiationException, IllegalAccessException
{
Class> clazz = Thread.currentThread().getContextClassLoader().loadClass(client);
return clazz.newInstance();
}
});
}
}
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