test/fuzzers/flexfec_header_reader_fuzzer.cc

/*
 *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <span>

#include "api/scoped_refptr.h"
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
#include "modules/rtp_rtcp/source/flexfec_header_reader_writer.h"
#include "modules/rtp_rtcp/source/forward_error_correction.h"
#include "test/fuzzers/fuzz_data_helper.h"

namespace webrtc {

using Packet = ForwardErrorCorrection::Packet;
using ReceivedFecPacket = ForwardErrorCorrection::ReceivedFecPacket;

void FuzzOneInput(FuzzDataHelper fuzz_data) {
  ReceivedFecPacket packet;
  packet.pkt = webrtc::scoped_refptr<Packet>(new Packet());
  const size_t packet_size =
      std::min(fuzz_data.size(), static_cast<size_t>(IP_PACKET_SIZE));
  std::span<const uint8_t> raw = fuzz_data.ReadByteArray(packet_size);
  packet.pkt->data.EnsureCapacity(IP_PACKET_SIZE);
  packet.pkt->data.SetData(raw.data(), raw.size());

  FlexfecHeaderReader flexfec_reader;
  flexfec_reader.ReadFecHeader(&packet);
}

}  // namespace webrtc