/**********************************************************************************
*
* $Id: AuthnFilter.java 105079 2012-02-24 23:08:11Z ottenhoff@longsight.com $
*
***********************************************************************************
*
* Copyright (c) 2005, 2006, 2008 The Sakai Foundation, The MIT Corporation
*
* Licensed under the Educational Community License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.opensource.org/licenses/ECL-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
**********************************************************************************/
package org.sakaiproject.tool.gradebook.ui.standalone;
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;
import javax.servlet.http.HttpSession;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.sakaiproject.tool.gradebook.facades.Authn;
import org.springframework.web.context.support.WebApplicationContextUtils;
/**
* An authentication filter for standalone use in demos and UI tests.
*/
public class AuthnFilter implements Filter {
private static Log logger = LogFactory.getLog(AuthnFilter.class);
private String authnRedirect;
private String authnServiceBean;
public void init(FilterConfig filterConfig) throws ServletException {
authnRedirect = filterConfig.getInitParameter("authnRedirect");
authnServiceBean = filterConfig.getInitParameter("authnServiceBean");
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
HttpSession session = ((HttpServletRequest)request).getSession();
Authn authnService = (Authn)WebApplicationContextUtils.getWebApplicationContext(session.getServletContext()).getBean(authnServiceBean);
authnService.setAuthnContext(request);
String userUid = authnService.getUserUid();
if (logger.isInfoEnabled()) logger.info("userUid=" + userUid);
if (userUid == null) {
if (authnRedirect != null) {
if (authnRedirect.equals(((HttpServletRequest)request).getRequestURI())) {
// Don't redirect to the same spot.
chain.doFilter(request, response);
} else {
// ((HttpServletRequest)request).getRequestDispatcher(authnRedirect).forward(request, response);
((HttpServletResponse)response).sendRedirect(authnRedirect);
}
} else {
((HttpServletResponse)response).sendError(HttpServletResponse.SC_UNAUTHORIZED);
}
} else {
chain.doFilter(request, response);
}
}
public void destroy() {
}
}