1 /*
2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "absl/functional/bind_front.h"
12 #include "modules/congestion_controller/include/receive_side_congestion_controller.h"
13 #include "modules/pacing/packet_router.h"
14 #include "modules/remote_bitrate_estimator/include/remote_bitrate_estimator.h"
15 #include "modules/rtp_rtcp/source/byte_io.h"
16
17 namespace webrtc {
18
FuzzOneInput(const uint8_t * data,size_t size)19 void FuzzOneInput(const uint8_t* data, size_t size) {
20 size_t i = 0;
21 if (size < sizeof(int64_t) + sizeof(uint8_t) + sizeof(uint32_t))
22 return;
23 SimulatedClock clock(data[i++]);
24 PacketRouter packet_router;
25 ReceiveSideCongestionController cc(
26 &clock,
27 absl::bind_front(&PacketRouter::SendCombinedRtcpPacket, &packet_router),
28 absl::bind_front(&PacketRouter::SendRemb, &packet_router), nullptr);
29 RTPHeader header;
30 header.ssrc = ByteReader<uint32_t>::ReadBigEndian(&data[i]);
31 i += sizeof(uint32_t);
32 header.extension.hasTransportSequenceNumber = true;
33 int64_t arrival_time_ms = std::min<int64_t>(
34 std::max<int64_t>(ByteReader<int64_t>::ReadBigEndian(&data[i]), 0),
35 std::numeric_limits<int64_t>::max() / 2);
36 i += sizeof(int64_t);
37 const size_t kMinPacketSize =
38 sizeof(size_t) + sizeof(uint16_t) + sizeof(uint8_t);
39 while (i + kMinPacketSize < size) {
40 size_t payload_size = ByteReader<size_t>::ReadBigEndian(&data[i]) % 1500;
41 i += sizeof(size_t);
42 header.extension.transportSequenceNumber =
43 ByteReader<uint16_t>::ReadBigEndian(&data[i]);
44 i += sizeof(uint16_t);
45 cc.OnReceivedPacket(arrival_time_ms, payload_size, header);
46 clock.AdvanceTimeMilliseconds(5);
47 arrival_time_ms += ByteReader<uint8_t>::ReadBigEndian(&data[i]);
48 i += sizeof(uint8_t);
49 cc.MaybeProcess();
50 }
51 }
52 } // namespace webrtc
53