content: /*
   * Copyright 2013 Agorava
   *
   * Licensed under the Apache 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.apache.org/licenses/LICENSE-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.agorava.servlet;
  
  import org.agorava.AgoravaConstants;
  import org.agorava.AgoravaContext;
  import org.agorava.api.exception.AgoravaException;
  import org.agorava.api.service.OAuthLifeCycleService;
  
  import javax.inject.Inject;
  import javax.servlet.ServletException;
  import javax.servlet.annotation.WebServlet;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.io.IOException;
  
  /**
   * @author Antoine Sabot-Durand
   */
  @WebServlet(value = "/callback", name = "OAuthCallBackCdi")
  public class OAuthCallbackServlet extends HttpServlet {
  
      @Inject
      OAuthLifeCycleService lifeCycleService;
  
      protected void renderResponse(HttpServletRequest req, HttpServletResponse resp) {
  
          String internalCallBack = (String) lifeCycleService.getCurrentSession().getExtraData().get(AgoravaConstants
                  .INTERN_CALLBACK_PARAM);
          if (internalCallBack == null)
              internalCallBack = AgoravaContext.getInternalCallBack();
  
          try {
              if (internalCallBack.startsWith("/"))
                  internalCallBack = req.getContextPath() + internalCallBack;
              internalCallBack = resp.encodeRedirectURL(internalCallBack + "?" + req.getQueryString());
              resp.sendRedirect(internalCallBack);
          } catch (IOException e) {
              throw new AgoravaException(e);
          }
      }
  
      @Override
      protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
          String verifier = req.getParameter(lifeCycleService.getVerifierParamName());
          lifeCycleService.endDance(verifier);
          renderResponse(req, resp);
      }
  }
  