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1ee563d5e0
Bug: webrtc:12338 Change-Id: I2a33903a79194bb092a17ea1e1505bf2a3377d8b Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227027 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34558}
94 lines
3.9 KiB
C++
94 lines
3.9 KiB
C++
/*
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* Copyright (c) 2019 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 <cstddef>
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#include <cstdint>
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#include <memory>
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#include <utility>
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#include "api/array_view.h"
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#include "common_video/generic_frame_descriptor/generic_frame_info.h"
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#include "modules/rtp_rtcp/source/rtp_dependency_descriptor_extension.h"
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#include "rtc_base/checks.h"
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#include "test/fuzzers/fuzz_data_helper.h"
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namespace webrtc {
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void FuzzOneInput(const uint8_t* data, size_t size) {
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FrameDependencyStructure structure1;
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// nullptr during 1st while loop, after that should point to structure1.
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const FrameDependencyStructure* structure1_ptr = nullptr;
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std::unique_ptr<const FrameDependencyStructure> structure2;
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test::FuzzDataHelper fuzz_data(rtc::MakeArrayView(data, size));
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while (fuzz_data.CanReadBytes(1)) {
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// Treat next byte as size of the next extension. That aligns how
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// two-byte rtp header extension sizes are written.
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size_t next_size = fuzz_data.Read<uint8_t>();
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auto raw =
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fuzz_data.ReadByteArray(std::min(next_size, fuzz_data.BytesLeft()));
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// Read the random input.
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DependencyDescriptor descriptor1;
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if (!RtpDependencyDescriptorExtension::Parse(raw, structure1_ptr,
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&descriptor1)) {
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// Ignore invalid buffer and move on.
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continue;
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}
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if (descriptor1.attached_structure) {
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structure1 = *descriptor1.attached_structure;
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structure1_ptr = &structure1;
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}
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RTC_CHECK(structure1_ptr);
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// Write parsed descriptor back into raw buffer.
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size_t value_size =
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RtpDependencyDescriptorExtension::ValueSize(structure1, descriptor1);
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// Check `writer` use minimal number of bytes to pack the descriptor by
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// checking it doesn't use more than reader consumed.
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RTC_CHECK_LE(value_size, raw.size());
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uint8_t some_memory[256];
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// That should be true because value_size <= next_size < 256
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RTC_CHECK_LT(value_size, 256);
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rtc::ArrayView<uint8_t> write_buffer(some_memory, value_size);
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RTC_CHECK(RtpDependencyDescriptorExtension::Write(write_buffer, structure1,
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descriptor1));
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// Parse what Write assembled.
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// Unlike random input that should always succeed.
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DependencyDescriptor descriptor2;
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RTC_CHECK(RtpDependencyDescriptorExtension::Parse(
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write_buffer, structure2.get(), &descriptor2));
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// Check descriptor1 and descriptor2 have same values.
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RTC_CHECK_EQ(descriptor1.first_packet_in_frame,
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descriptor2.first_packet_in_frame);
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RTC_CHECK_EQ(descriptor1.last_packet_in_frame,
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descriptor2.last_packet_in_frame);
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RTC_CHECK_EQ(descriptor1.attached_structure != nullptr,
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descriptor2.attached_structure != nullptr);
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// Using value_or would miss invalid corner case when one value is nullopt
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// while another one is 0, but for other errors would produce much nicer
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// error message than using RTC_CHECK(optional1 == optional2);
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// If logger would support pretty printing optional values, value_or can be
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// removed.
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RTC_CHECK_EQ(descriptor1.active_decode_targets_bitmask.value_or(0),
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descriptor2.active_decode_targets_bitmask.value_or(0));
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RTC_CHECK_EQ(descriptor1.frame_number, descriptor2.frame_number);
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RTC_CHECK(descriptor1.resolution == descriptor2.resolution);
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RTC_CHECK(descriptor1.frame_dependencies == descriptor2.frame_dependencies);
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if (descriptor2.attached_structure) {
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structure2 = std::move(descriptor2.attached_structure);
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}
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}
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}
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} // namespace webrtc
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