juplo.de Git - examples/facebook-app/blob - src/main/java/de/juplo/yourshouter/SocialAuthenticationEntryPoint.java

   1 package de.juplo.yourshouter;
   2
   3 import java.io.IOException;
   4 import javax.servlet.ServletException;
   5 import javax.servlet.http.HttpServletRequest;
   6 import javax.servlet.http.HttpServletResponse;
   7 import org.slf4j.Logger;
   8 import org.slf4j.LoggerFactory;
   9 import org.springframework.security.core.AuthenticationException;
  10 import org.springframework.security.web.AuthenticationEntryPoint;
  11 import org.springframework.stereotype.Service;
  12
  13
  14 /**
  15  * Specialized implementation of {@link AuthenticationEntryPoint}, that
  16  * redirects to the social sign-in-page, to let the user decide to sign in or
  17  * not.
  18  *
  19  * @author Kai Moritz
  20  */
  21 @Service
  22 public class SocialAuthenticationEntryPoint implements AuthenticationEntryPoint
  23 {
  24   private static final Logger LOG =
  25       LoggerFactory.getLogger(SocialAuthenticationEntryPoint.class);
  26
  27
  28   /**
  29    * {@inheritDoc}
  30    *
  31    * To commence the sign-in through the Graph-API, we only have to redirect
  32    * to our already implemented sign-in-page.
  33    */
  34   @Override
  35   public void commence(
  36       HttpServletRequest request,
  37       HttpServletResponse response,
  38       AuthenticationException exception
  39       )
  40       throws
  41         IOException,
  42         ServletException
  43   {
  44     LOG.info(
  45         "redirecting unauthenticated request {} to /signin.html",
  46         request.getRequestURI()
  47         );
  48     response.sendRedirect("/signin.html");
  49   }
  50 }