Subversion Repositories bacoAlunos

package pt.estgp.estgweb.web.filters;

import org.apache.log4j.Logger;

import pt.estgp.estgweb.Globals;

import pt.estgp.estgweb.domain.UserSessionImpl;

import javax.servlet.*;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

/**

 *

 * @author  Jorge Machado

 */

public class UserFilter implements 1.5.0/docs/api/java/util/logging/Filter.html">Filter {

    private static final 1.5.0/docs/api/java/util/logging/Logger.html">Logger logger = 1.5.0/docs/api/java/util/logging/Logger.html">Logger.getLogger(UserFilter.class);

    public UserFilter()

    {

    }

    public void init(FilterConfig config)

    {

    }

    /**

     *

     * @param request The servlet request we are processing

     * @param chain The filter chain we are processing

     *

     * @exception java.io.IOException if an input/output error occurs

     * @exception javax.servlet.ServletException if a servlet error occurs

     */

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)

            throws 1.5.0/docs/api/java/io/IOException.html">IOException, ServletException

    {

        HttpServletRequest hrequest = (HttpServletRequest) request;

        if(((HttpServletRequest)request).getServletPath().indexOf("errorNoCookies.do")>=0 || !hrequest.isRequestedSessionIdFromCookie())

            chain.doFilter(request,response);

        UserSessionImpl userSession = (UserSessionImpl) request.getAttribute(Globals.USER_SESSION_KEY);

        if(userSession != null && userSession.getUser() != null)

            chain.doFilter(request,response);

        else if(userSession == null)

        {

             logger.info("User lost Session");

        }

        else

        {

            try{

            // ((HttpServletResponse)response).setStatus(401);

             ((HttpServletResponse)response).sendError(401);

            }catch(1.5.0/docs/api/java/lang/Throwable.html">Throwable e)

            {

                logger.error("Error don't sending error, probably already sent: " + e);

            }

        }

    }

    public void destroy()

    {

        // Nothing

    }

}