/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.access.common.servlet;
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStreamReader;
  
  import ch.qos.logback.access.common.AccessConstants;
  import jakarta.servlet.ServletInputStream;
  import jakarta.servlet.http.HttpServletRequest;
  import jakarta.servlet.http.HttpServletRequestWrapper;
  
  /**
   * As the "tee" program on Unix, duplicate the request's input stream.
   *
   * @author Ceki Gülcü
   */
  class TeeHttpServletRequest extends HttpServletRequestWrapper {
  
      private TeeServletInputStream inStream;
      private BufferedReader reader;
      boolean postedParametersMode = false;
  
      TeeHttpServletRequest(HttpServletRequest request) {
          super(request);
          // we can't access the input stream and access the request parameters
          // at the same time
          if (Util.isFormUrlEncoded(request)) {
              postedParametersMode = true;
          } else {
              inStream = new TeeServletInputStream(request);
              // add the contents of the input buffer as an attribute of the request
              request.setAttribute(AccessConstants.LB_INPUT_BUFFER, inStream.getInputBuffer());
              reader = new BufferedReader(new InputStreamReader(inStream));
          }
  
      }
  
      byte[] getInputBuffer() {
          if (postedParametersMode) {
              throw new IllegalStateException("Call disallowed in postedParametersMode");
          }
          return inStream.getInputBuffer();
      }
  
      @Override
      public ServletInputStream getInputStream() throws IOException {
          if (!postedParametersMode) {
              return inStream;
          } else {
              return super.getInputStream();
          }
      }
  
      //
  
      @Override
      public BufferedReader getReader() throws IOException {
          if (!postedParametersMode) {
              return reader;
          } else {
              return super.getReader();
          }
      }
  
      public boolean isPostedParametersMode() {
          return postedParametersMode;
      }
  
  }