/*
* JBoss, a division of Red Hat
* Copyright 2012, Red Hat Middleware, LLC, 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.gatein.sso.agent.filter;
import org.exoplatform.container.web.AbstractFilter;
import org.exoplatform.services.security.jaas.UserPrincipal;
import org.gatein.common.logging.Logger;
import org.gatein.common.logging.LoggerFactory;
import org.jboss.security.SecurityContext;
import org.jboss.security.SecurityContextAssociation;
import org.jboss.security.client.SecurityClient;
import org.jboss.security.client.SecurityClientFactory;
import org.picketlink.identity.federation.core.wstrust.SamlCredential;
import javax.security.auth.Subject;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Set;
/**
* Filter for set {@link SamlCredential} into {@link SecurityClient}, which enables to propagate authentication from SAML2 ticket into
* underlying EJB or WS calls.
*
* @author <a href="mailto:mposolda@redhat.com">Marek Posolda</a>
*/
public class PicketlinkSTSIntegrationFilter extends AbstractFilter
{
private static Logger log = LoggerFactory.getLogger(PicketlinkSTSIntegrationFilter.class);
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
{
HttpServletRequest httpRequest = (HttpServletRequest)request;
if (httpRequest.getRemoteUser() != null)
{
try
{
SamlCredential samlCredential = getSamlCredential();
if (log.isTraceEnabled())
{
log.trace("Found SamlCredential inside Subject: " + samlCredential);
}
// Now set the security context, which can be used in EJB or other calls
if (samlCredential != null)
{
SecurityClient client = SecurityClientFactory.getSecurityClient();
// Simple login just updates the security context
client.setSimple(new UserPrincipal(httpRequest.getRemoteUser()), samlCredential);
client.login();
if (log.isTraceEnabled())
{
log.trace("SecurityClient successfully updated with SAMLCredential");
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
chain.doFilter(request, response);
}
public void destroy()
{
}
private SamlCredential getSamlCredential()
{
Subject subj = getCurrentSubject();
if (log.isTraceEnabled())
{
log.trace("Found subject " + subj);
}
if (subj == null)
{
return null;
}
Set<Object> credentials = subj.getPublicCredentials();
for (Object credential : credentials)
{
if (credential instanceof SamlCredential)
{
return (SamlCredential)credential;
}
}
return null;
}
/**
* JBoss specific way for obtaining a Subject.
* TODO: is JBoss specific way needed? subject should be available in ConversationState
*
* @return subject
*/
protected Subject getCurrentSubject()
{
SecurityContext securityContext = AccessController.doPrivileged(new PrivilegedAction<SecurityContext>()
{
public SecurityContext run()
{
return SecurityContextAssociation.getSecurityContext();
}
});
return securityContext.getSubjectInfo().getAuthenticatedSubject();
}
}