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5e5d017c2b
Instead of getting header extension mapping from a receiver object, get the mapping from the received packet. The purpose is to be able to remove extension information from webrtc/call/receive_stream.h. Header extensions are negotiated per mid, not per receive stream. The goal is to reduce the number of places where packets are parsed and demuxed. Bug: webrtc:7135, webrtc:14795 Change-Id: I8944bc06a11dc572d9e14e7d7ee446a841096295 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/288968 Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Commit-Queue: Per Kjellander <perkj@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38944}
71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <algorithm>
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#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
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#include "modules/rtp_rtcp/source/byte_io.h"
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#include "modules/rtp_rtcp/source/rtp_packet_received.h"
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#include "modules/rtp_rtcp/source/ulpfec_receiver.h"
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#include "test/fuzzers/fuzz_data_helper.h"
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namespace webrtc {
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namespace {
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class DummyCallback : public RecoveredPacketReceiver {
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void OnRecoveredPacket(const RtpPacketReceived& packet) override {}
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};
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} // namespace
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void FuzzOneInput(const uint8_t* data, size_t size) {
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constexpr size_t kMinDataNeeded = 12;
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if (size < kMinDataNeeded || size > 2000) {
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return;
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}
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uint32_t ulpfec_ssrc = ByteReader<uint32_t>::ReadLittleEndian(data + 0);
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uint16_t ulpfec_seq_num = ByteReader<uint16_t>::ReadLittleEndian(data + 4);
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uint32_t media_ssrc = ByteReader<uint32_t>::ReadLittleEndian(data + 6);
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uint16_t media_seq_num = ByteReader<uint16_t>::ReadLittleEndian(data + 10);
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DummyCallback callback;
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UlpfecReceiver receiver(ulpfec_ssrc, 0, &callback, Clock::GetRealTimeClock());
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test::FuzzDataHelper fuzz_data(rtc::MakeArrayView(data, size));
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while (fuzz_data.CanReadBytes(kMinDataNeeded)) {
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size_t packet_length = kRtpHeaderSize + fuzz_data.Read<uint8_t>();
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auto raw_packet = fuzz_data.ReadByteArray(packet_length);
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RtpPacketReceived parsed_packet;
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if (!parsed_packet.Parse(raw_packet))
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continue;
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// Overwrite the fields for the sequence number and SSRC with
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// consistent values for either a received UlpFEC packet or received media
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// packet. (We're still relying on libfuzzer to manage to generate packet
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// headers that interact together; this just ensures that we have two
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// consistent streams).
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if (fuzz_data.ReadOrDefaultValue<uint8_t>(0) % 2 == 0) {
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// Simulate UlpFEC packet.
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parsed_packet.SetSequenceNumber(ulpfec_seq_num++);
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parsed_packet.SetSsrc(ulpfec_ssrc);
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} else {
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// Simulate media packet.
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parsed_packet.SetSequenceNumber(media_seq_num++);
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parsed_packet.SetSsrc(media_ssrc);
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}
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receiver.AddReceivedRedPacket(parsed_packet);
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}
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receiver.ProcessReceivedFec();
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}
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} // namespace webrtc
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