/*
* JBoss, Home of Professional Open Source
* Copyright 2005, 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.jacc;
import static org.jboss.security.SecurityConstants.SUBJECT_CONTEXT_KEY;
import java.security.AccessController;
import java.security.Principal;
import java.security.PrivilegedAction;
import java.util.HashSet;
import java.util.Set;
import javax.security.auth.Subject;
import javax.security.jacc.PolicyContextException;
import javax.security.jacc.PolicyContextHandler;
import org.jboss.security.RunAsIdentity;
import org.jboss.security.SecurityContext;
import org.jboss.security.SubjectInfo;
import org.jboss.security.SecurityContextAssociation;
/** A PolicyContextHandler for the current authenticated Subject.
* @author Scott.Stark@jboss.org
* @author Anil.Saldhana@redhat.com
* @version $Revison:$
*/
public class SubjectPolicyContextHandler implements PolicyContextHandler
{
public static final HashSet<Object> EMPTY_SET = new HashSet<Object>();
private static class GetSubjectAction implements PrivilegedAction<Subject>
{
static PrivilegedAction<Subject> ACTION = new GetSubjectAction();
public Subject run()
{
Subject theSubject = null;
SecurityContext sc = SecurityContextAssociation.getSecurityContext();
if(sc != null)
{
SubjectInfo si = sc.getSubjectInfo();
if(si != null)
{
Subject activeSubject = si.getAuthenticatedSubject();
RunAsIdentity callerRunAsIdentity = (RunAsIdentity)sc.getIncomingRunAs();
if( activeSubject != null )
{
Set<Principal> principalsSet = null;
if( callerRunAsIdentity == null )
{
principalsSet = activeSubject.getPrincipals();
}
else
{
principalsSet = callerRunAsIdentity.getPrincipalsSet();
}
theSubject = new Subject(true, principalsSet,
activeSubject.getPublicCredentials(),
activeSubject.getPrivateCredentials());
}
else
{
if( callerRunAsIdentity != null )
{
Set<Principal> 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);
}
}