/*
* 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.security.jacc;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Set;
import java.util.HashSet;
import javax.security.auth.Subject;
import javax.security.jacc.PolicyContextException;
import javax.security.jacc.PolicyContextHandler;
import org.jboss.security.RunAsIdentity;
import org.jboss.security.SecurityAssociation;
/** A PolicyContextHandler for the current authenticated Subject.
* @author Scott.Stark@jboss.org
* @version $Revison:$
*/
public class SubjectPolicyContextHandler implements PolicyContextHandler
{
public static final String SUBJECT_CONTEXT_KEY = "javax.security.auth.Subject.container";
public static final HashSet EMPTY_SET = new HashSet();
private static class GetSubjectAction implements PrivilegedAction
{
static PrivilegedAction ACTION = new GetSubjectAction();
public Object run()
{
Subject theSubject = null;
Subject activeSubject = SecurityAssociation.getSubject();
if( activeSubject != null )
{
Set principalsSet = null;
RunAsIdentity callerRunAsIdentity = (RunAsIdentity)
SecurityAssociation.peekRunAsIdentity(1);
if( callerRunAsIdentity == null )
{
principalsSet = activeSubject.getPrincipals();
}
else
{
principalsSet = callerRunAsIdentity.getPrincipalsSet();
}
theSubject = new Subject(true, principalsSet,
activeSubject.getPublicCredentials(),
activeSubject.getPrivateCredentials());
}
else
{
RunAsIdentity callerRunAsIdentity = (RunAsIdentity)
SecurityAssociation.peekRunAsIdentity(1);
if( callerRunAsIdentity != null )
{
Set principalsSet = callerRunAsIdentity.getPrincipalsSet();
theSubject = new Subject(true, principalsSet, EMPTY_SET, EMPTY_SET);
}
}
return theSubject;
}
}
public Object getContext(String key, Object data)
throws PolicyContextException
{
if( key.equalsIgnoreCase(SUBJECT_CONTEXT_KEY) == false )
return null;
Subject subject = (Subject) AccessController.doPrivileged(GetSubjectAction.ACTION);
return subject;
}
public String[] getKeys()
throws PolicyContextException
{
String[] keys = {SUBJECT_CONTEXT_KEY};
return keys;
}
public boolean supports(String key)
throws PolicyContextException
{
return key.equalsIgnoreCase(SUBJECT_CONTEXT_KEY);
}
}