/*
* JBoss, a division of Red Hat
* Copyright 2011, 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 java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import org.exoplatform.container.web.AbstractFilter;
/**
* Filter is needed because when fallback to FORM authentication, we don't need to redirect request to /dologin, which is secured URI,
* but we need to go directly to /initiatelogin without going again through Tomcat authenticator.
*
* TODO: Suggest removing this filter as with new GateIn (Servlet 3.0 authentication) it may not be needed anymore
*
* @author <a href="mailto:mposolda@redhat.com">Marek Posolda</a>
*/
public class SPNEGOFilter extends AbstractFilter
{
public static final String ATTR_INITIAL_URI = "SPNEGOFilter.initialURI";
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException
{
HttpServletRequest httpRequest = (HttpServletRequest)request;
HttpServletResponse httpResponse = (HttpServletResponse)response;
try
{
// first save initialURI as parameter into HTTP session. We may need it later in authenticator
String initialURI = httpRequest.getParameter("initialURI");
if (initialURI != null)
{
httpRequest.getSession().setAttribute(ATTR_INITIAL_URI, initialURI);
}
// we need to redirect directly to initiatelogin without going through secured URL.
HttpServletResponse wrapperResponse = new IgnoreRedirectHttpResponse(httpResponse);
chain.doFilter(request, wrapperResponse);
httpResponse.sendRedirect(httpRequest.getContextPath() + "/initiatelogin");
}
catch(Throwable t)
{
throw new RuntimeException(t);
}
}
public void destroy()
{
}
// Ignoring calls to response.sendRedirect, which are performed from PortalLoginController
private class IgnoreRedirectHttpResponse extends HttpServletResponseWrapper
{
public IgnoreRedirectHttpResponse(HttpServletResponse response)
{
super(response);
}
@Override
public void sendRedirect(String location)
{
}
}
}