/*
* 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.web.tomcat.security;
import java.io.IOException;
import java.security.Principal;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.jboss.logging.Logger;
/**
* A filter to keep track of principals in the sessions.
*
* @author mmoyses@redhat.com
* @version $Revison: 1 $
*/
public class PrincipalSessionAttributeFilter implements Filter
{
private static Logger log = Logger.getLogger(PrincipalSessionAttributeFilter.class);
private boolean trace = log.isTraceEnabled();
private static final String JBOSS_PRINCIPAL = "org.jboss.web.tomcat.security.principal";
/**
* @see Filter#init(javax.servlet.FilterConfig)
*/
public void init(FilterConfig filterConfig) throws ServletException
{
}
/**
* @see Filter#destroy()
*/
public void destroy()
{
}
/**
* @see Filter#doFilter(javax.servlet.ServletRequest,
* javax.servlet.ServletResponse, javax.servlet.FilterChain)
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
ServletException
{
HttpSession session = ((HttpServletRequest) request).getSession();
Principal principal = (Principal) session.getAttribute(JBOSS_PRINCIPAL);
if (principal == null)
{
principal = ((HttpServletRequest) request).getUserPrincipal();
session.setAttribute(JBOSS_PRINCIPAL, principal);
if (trace)
log.trace("Placing principal in session");
}
chain.doFilter(request, response);
}
}