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.AgoravaContext;
  
  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.annotation.WebFilter;
  import java.io.IOException;
  
  /**
   * This filter capture the web context and store it in a static field of AgoravaContext It's main use is for calculing Callback
   * URL in OAuth lifecycle
   *
   * @author Antoine Sabot-Durand
   */
  @WebFilter({"/*"})
  public class CaptureAbsolutePathFilter implements Filter {
  
      private boolean first = true;
  
      @Override
      public void destroy() {
  
      }
  
      @Override
      public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
          if (first) {
              AgoravaContext.webAbsolutePath = req.getScheme() + "://" + req.getServerName() + ":" + req.getServerPort()
                      + req.getServletContext().getContextPath();
  
              first = false;
          }
  
          chain.doFilter(req, resp);
      }
  
      @Override
      public void init(FilterConfig arg0) throws ServletException {
  
      }
  
  }
  