content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.apache.atlas.web.filters;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.factory.annotation.Value;
  import org.springframework.security.core.AuthenticationException;
  import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;
  import org.springframework.stereotype.Component;
  
  import javax.inject.Inject;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import java.io.IOException;
  
  @Component
  public class AtlasAuthenticationEntryPoint extends LoginUrlAuthenticationEntryPoint {
      private static final Logger LOG = LoggerFactory.getLogger(AtlasAuthenticationEntryPoint.class);
  
      private static final String LOGIN_PATH = "/login.jsp";
  
      @Inject
      public AtlasAuthenticationEntryPoint(@Value("/login.jsp") String loginFormUrl) {
          super(loginFormUrl);
      }
  
      @Override
      public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException {
          String ajaxRequestHeader = request.getHeader("X-Requested-With");
  
          response.setHeader("X-Frame-Options", "DENY");
  
          if ("XMLHttpRequest".equals(ajaxRequestHeader)) {
              response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
          } else {
              LOG.debug("redirecting to login page loginPath {}", LOGIN_PATH);
  
              response.sendRedirect(LOGIN_PATH);
          }
      }
  }
  