org.smallmind.web.reverse.http1_1.HttpContentLengthFrameReader Maven / Gradle / Ivy

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/*
 * Copyright (c) 2007 through 2024 David Berkman
 *
 * This file is part of the SmallMind Code Project.
 *
 * The SmallMind Code Project is free software, you can redistribute
 * it and/or modify it under either, at your discretion...
 *
 * 1) The terms of GNU Affero General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at
 * your option) any later version.
 *
 * ...or...
 *
 * 2) The terms of the Apache License, Version 2.0.
 *
 * The SmallMind Code Project is distributed in the hope that it will
 * be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License or Apache License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * and the Apache License along with the SmallMind Code Project. If not, see
 *  or .
 *
 * Additional permission under the GNU Affero GPL version 3 section 7
 * ------------------------------------------------------------------
 * If you modify this Program, or any covered work, by linking or
 * combining it with other code, such other code is not for that reason
 * alone subject to any of the requirements of the GNU Affero GPL
 * version 3.
 */
package org.smallmind.web.reverse.http1_1;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
import java.nio.channels.SocketChannel;

public class HttpContentLengthFrameReader implements FrameReader {

  private final HttpFrameReader httpFrameReader;
  private final int contentLength;
  private int bytesRead = 0;

  public HttpContentLengthFrameReader (HttpFrameReader httpFrameReader, int contentLength) {

    this.httpFrameReader = httpFrameReader;
    this.contentLength = contentLength;
  }

  @Override
  public void closeChannels () {

    httpFrameReader.closeChannels();
  }

  @Override
  public void fail (CannedResponse cannedResponse, SocketChannel failedChannel) {

    httpFrameReader.fail(cannedResponse, failedChannel);
  }

  public void processInput (SelectionKey selectionKey, ByteBuffer byteBuffer) {

    try {
      while ((byteBuffer.remaining() > 0) && (bytesRead++ < contentLength)) {
        httpFrameReader.writeToBuffer(byteBuffer.get());
      }

      if (bytesRead == contentLength) {
        httpFrameReader.flushBufferToTarget(true);
        selectionKey.attach(httpFrameReader);
      }
    } catch (IOException ioException) {
      fail(CannedResponse.BAD_REQUEST, null);
    }
  }
}