/*
* JBoss, a division of Red Hat
* Copyright 2006, 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.gatein.common.logging.Logger;
import org.gatein.common.logging.LoggerFactory;
import java.io.IOException;
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.HttpServletResponse;
/**
* @author <a href="mailto:sshah@redhat.com">Sohil Shah</a>
*/
public class LoginRedirectFilter implements Filter
{
String loginUrl;
private static final Logger log = LoggerFactory.getLogger(LoginRedirectFilter.class);
public void init(FilterConfig config) throws ServletException
{
this.loginUrl = config.getInitParameter("LOGIN_URL");
log.info("Filter configuration: loginUrl=" + loginUrl);
}
public void destroy()
{
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException
{
HttpServletRequest httpRequest = (HttpServletRequest) request;
HttpServletResponse httpResponse = (HttpServletResponse) response;
boolean isLoginInProgress = this.isLoginInProgress(httpRequest);
if(isLoginInProgress)
{
String urlToRedirect = getLoginRedirectURL(httpRequest);
urlToRedirect = httpResponse.encodeRedirectURL(urlToRedirect);
httpResponse.sendRedirect(urlToRedirect);
return;
}
chain.doFilter(request, response);
}
/**
* @return value of parameter loginUrl. But can be overriden by subclasses.
*/
protected String getLoginRedirectURL(HttpServletRequest httpRequest)
{
return this.loginUrl;
}
private boolean isLoginInProgress(HttpServletRequest request)
{
String action = request.getRequestURI();
if (action != null && action.equals(request.getContextPath() + "/sso"))
{
return true;
}
return false;
}
}