mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-13 05:40:42 +01:00
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
2.3 KiB
C++
71 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2016 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 "modules/rtp_rtcp/include/flexfec_receiver.h"
|
|
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
|
|
#include "modules/rtp_rtcp/source/byte_io.h"
|
|
#include "modules/rtp_rtcp/source/rtp_packet_received.h"
|
|
|
|
namespace webrtc {
|
|
|
|
namespace {
|
|
class DummyCallback : public RecoveredPacketReceiver {
|
|
void OnRecoveredPacket(const RtpPacketReceived& packet) override {}
|
|
};
|
|
} // namespace
|
|
|
|
void FuzzOneInput(const uint8_t* data, size_t size) {
|
|
constexpr size_t kMinDataNeeded = 12;
|
|
if (size < kMinDataNeeded || size > 2000) {
|
|
return;
|
|
}
|
|
|
|
uint32_t flexfec_ssrc;
|
|
memcpy(&flexfec_ssrc, data + 0, 4);
|
|
uint16_t flexfec_seq_num;
|
|
memcpy(&flexfec_seq_num, data + 4, 2);
|
|
uint32_t media_ssrc;
|
|
memcpy(&media_ssrc, data + 6, 4);
|
|
uint16_t media_seq_num;
|
|
memcpy(&media_seq_num, data + 10, 2);
|
|
|
|
DummyCallback callback;
|
|
FlexfecReceiver receiver(flexfec_ssrc, media_ssrc, &callback);
|
|
|
|
std::unique_ptr<uint8_t[]> packet;
|
|
size_t packet_length;
|
|
size_t i = kMinDataNeeded;
|
|
while (i < size) {
|
|
packet_length = kRtpHeaderSize + data[i++];
|
|
packet = std::unique_ptr<uint8_t[]>(new uint8_t[packet_length]);
|
|
if (i + packet_length >= size) {
|
|
break;
|
|
}
|
|
memcpy(packet.get(), data + i, packet_length);
|
|
i += packet_length;
|
|
if (i < size && data[i++] % 2 == 0) {
|
|
// Simulate FlexFEC packet.
|
|
ByteWriter<uint16_t>::WriteBigEndian(packet.get() + 2, flexfec_seq_num++);
|
|
ByteWriter<uint32_t>::WriteBigEndian(packet.get() + 8, flexfec_ssrc);
|
|
} else {
|
|
// Simulate media packet.
|
|
ByteWriter<uint16_t>::WriteBigEndian(packet.get() + 2, media_seq_num++);
|
|
ByteWriter<uint32_t>::WriteBigEndian(packet.get() + 8, media_ssrc);
|
|
}
|
|
RtpPacketReceived parsed_packet;
|
|
if (parsed_packet.Parse(packet.get(), packet_length)) {
|
|
receiver.OnRtpPacket(parsed_packet);
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace webrtc
|