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02c99982c8
Bug: chromium:1355892 Change-Id: Ib0c48d27fb1e79212d2354e0249511aeeb53f650 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/272961 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37913}
64 lines
2.4 KiB
C++
64 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021 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 <cstddef>
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#include <cstdint>
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#include <limits>
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#include "api/array_view.h"
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#include "api/video/video_layers_allocation.h"
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#include "modules/rtp_rtcp/source/rtp_video_layers_allocation_extension.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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void FuzzOneInput(const uint8_t* data, size_t size) {
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// Video layers allocation is an rtp header extension.
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// Per https://datatracker.ietf.org/doc/html/rfc8285#section-4.3
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// rtp header extension uses up to one byte to store the size, i.e.
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// maximum size of any rtp header extension is 255 bytes.
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constexpr int kMaxSize = std::numeric_limits<uint8_t>::max();
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if (size > kMaxSize) {
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return;
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}
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auto raw = rtc::MakeArrayView(data, size);
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VideoLayersAllocation allocation1;
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if (!RtpVideoLayersAllocationExtension::Parse(raw, &allocation1)) {
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// Ignore invalid buffer and move on.
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return;
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}
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// Write parsed allocation back into raw buffer.
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size_t value_size = RtpVideoLayersAllocationExtension::ValueSize(allocation1);
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// Check `writer` use minimal number of bytes to pack the extension 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[kMaxSize];
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RTC_CHECK_LE(value_size, kMaxSize);
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rtc::ArrayView<uint8_t> write_buffer(some_memory, value_size);
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RTC_CHECK(
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RtpVideoLayersAllocationExtension::Write(write_buffer, allocation1));
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// Parse what Write assembled.
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// Unlike random input that should always succeed.
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VideoLayersAllocation allocation2;
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RTC_CHECK(
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RtpVideoLayersAllocationExtension::Parse(write_buffer, &allocation2));
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RTC_CHECK_EQ(allocation1.rtp_stream_index, allocation2.rtp_stream_index);
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RTC_CHECK_EQ(allocation1.resolution_and_frame_rate_is_valid,
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allocation2.resolution_and_frame_rate_is_valid);
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RTC_CHECK_EQ(allocation1.active_spatial_layers.size(),
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allocation2.active_spatial_layers.size());
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RTC_CHECK(allocation1 == allocation2);
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}
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} // namespace webrtc
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