/*
* 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.jboss.jmx.connector.invoker;
import java.security.AccessController;
import java.security.Principal;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import javax.security.auth.Subject;
import org.jboss.security.SecurityAssociation;
import org.jboss.security.SecurityContext;
import org.jboss.security.SecurityContextFactory;
import org.jboss.security.SecurityContextAssociation;
/** Common PrivilegedAction used by classes in this package.
*
* @author Scott.Stark@jboss.org
* @author Anil.Saldhana@redhat.com
* @version $Revison:$
*/
class SecurityActions
{
private static class GetSubjectAction implements PrivilegedAction
{
static PrivilegedAction ACTION = new GetSubjectAction();
public Object run()
{
Subject subject = SecurityAssociation.getSubject();
return subject;
}
}
private static class GetTCLAction implements PrivilegedAction
{
static PrivilegedAction ACTION = new GetTCLAction();
public Object run()
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
return loader;
}
}
private static class SetTCLAction implements PrivilegedAction
{
ClassLoader loader;
SetTCLAction(ClassLoader loader)
{
this.loader = loader;
}
public Object run()
{
Thread.currentThread().setContextClassLoader(loader);
loader = null;
return null;
}
}
interface PrincipalInfoAction
{
PrincipalInfoAction PRIVILEGED = new PrincipalInfoAction()
{
public void push(final Principal principal, final Object credential,
final Subject subject)
{
AccessController.doPrivileged(
new PrivilegedAction()
{
public Object run()
{
//SecurityAssociation.pushSubjectContext(subject, principal, credential);
getSecurityContext().getUtil().createSubjectInfo(principal, credential, subject);
return null;
}
}
);
}
public void pop()
{
AccessController.doPrivileged(
new PrivilegedAction()
{
public Object run()
{
//SecurityAssociation.popSubjectContext();
SecurityContext sc = getSecurityContext();
if(sc != null)
{
sc.getUtil().createSubjectInfo(null, null, null);
}
return null;
}
}
);
}
};
PrincipalInfoAction NON_PRIVILEGED = new PrincipalInfoAction()
{
public void push(Principal principal, Object credential, Subject subject)
{
//SecurityAssociation.pushSubjectContext(subject, principal, credential);
getSecurityContext().getUtil().createSubjectInfo(principal, credential, subject);
}
public void pop()
{
//SecurityAssociation.popSubjectContext();
SecurityContext sc = getSecurityContext();
if(sc != null)
{
sc.getUtil().createSubjectInfo(null, null, null);
}
}
};
void push(Principal principal, Object credential, Subject subject);
void pop();
}
static class SetSecurityContextAction implements PrivilegedAction
{
private SecurityContext securityContext;
SetSecurityContextAction(SecurityContext sc)
{
this.securityContext = sc;
}
public Object run()
{
SecurityContextAssociation.setSecurityContext(securityContext);
return null;
}
}
static Subject getActiveSubject()
{
Subject subject = (Subject) AccessController.doPrivileged(GetSubjectAction.ACTION);
return subject;
}
static ClassLoader getContextClassLoader()
{
ClassLoader loader = (ClassLoader) AccessController.doPrivileged(GetTCLAction.ACTION);
return loader;
}
static void setContextClassLoader(ClassLoader loader)
{
PrivilegedAction action = new SetTCLAction(loader);
AccessController.doPrivileged(action);
}
static void pushSubjectContext(Principal principal, Object credential,
Subject subject)
{
if(System.getSecurityManager() == null)
{
PrincipalInfoAction.NON_PRIVILEGED.push(principal, credential, subject);
}
else
{
PrincipalInfoAction.PRIVILEGED.push(principal, credential, subject);
}
}
static void popSubjectContext()
{
if(System.getSecurityManager() == null)
{
PrincipalInfoAction.NON_PRIVILEGED.pop();
}
else
{
PrincipalInfoAction.PRIVILEGED.pop();
}
}
static SecurityContext createSecurityContext(final String domain)
throws PrivilegedActionException
{
return (SecurityContext)AccessController.doPrivileged( new PrivilegedExceptionAction()
{
public Object run() throws Exception
{
return SecurityContextFactory.createSecurityContext(domain);
}});
}
static SecurityContext getSecurityContext()
{
return (SecurityContext)AccessController.doPrivileged( new PrivilegedAction()
{
public Object run()
{
return SecurityContextAssociation.getSecurityContext();
}});
}
static void clearSecurityContext()
{
AccessController.doPrivileged(new PrivilegedAction(){
public Object run()
{
SecurityContextAssociation.clearSecurityContext();
return null;
}});
}
static void setSecurityContext(SecurityContext sc)
{
SetSecurityContextAction action = new SetSecurityContextAction(sc);
AccessController.doPrivileged(action);
}
}