/*
 * JBoss, a division of Red Hat
 * Copyright 2010, Red Hat Middleware, 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.exoplatform.web.login;

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 org.exoplatform.container.ExoContainer;
import org.exoplatform.container.web.AbstractFilter;
import org.exoplatform.web.security.PortalLoginModule;
import org.gatein.wci.security.Credentials;
import org.jboss.web.tomcat.security.login.WebAuthentication;

/**
 * @author <a href="mailto:boleslaw.dawidowicz@redhat.com">Boleslaw Dawidowicz</a>
 *
 * @deprecated This filter is no longer needed. Cluster SSO is handled by JBoss AS ClusteredValve and PortalClusteredSSOSupportValve
 * Filter class should be removed in the future together with {@link PortalLoginModule}
 */
public class ClusteredSSOFilter extends AbstractFilter {

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
            ServletException {
        if (ExoContainer.getProfiles().contains("cluster")) {
            HttpServletRequest httpRequest = (HttpServletRequest) request;

            Credentials credentials = (Credentials) httpRequest.getSession().getAttribute(
                    PortalLoginModule.AUTHENTICATED_CREDENTIALS);

            // Make programatic login if authenticated credentials are present in session - they were set in another cluster
            // node
            if (credentials != null && httpRequest.getRemoteUser() == null) {
                WebAuthentication pwl = new WebAuthentication();
                pwl.login(credentials.getUsername(), credentials.getPassword());

            }

            chain.doFilter(request, response);

            // TODO:
            // This is a workaround... without this code this attr will vanish from session after first request - don't ask...
            if (credentials != null && httpRequest.getSession(false) != null) {
                httpRequest.getSession(false).setAttribute(PortalLoginModule.AUTHENTICATED_CREDENTIALS, credentials);
            }
        } else {
            chain.doFilter(request, response);
        }
    }

    public void destroy() {
    }
}
