/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <cstdint>
#include <fstream>
#include <memory>
#include <ostream>
#include "hci/pcap_filter.h"
#include "model/hci/h4.h"
#include "model/hci/hci_transport.h"
namespace rootcanal {
enum class PacketDirection : uint8_t {
HOST_TO_CONTROLLER =
0,
CONTROLLER_TO_HOST =
1,
};
// A Hci Transport that logs all the in and out going
// packets to a stream.
class HciSniffer :
public HciTransport {
public:
HciSniffer(std::shared_ptr<HciTransport> transport,
std::shared_ptr<std::ostream> outputStream = nullptr,
std::shared_ptr<PcapFilter> filter = nullptr);
~HciSniffer() =
default;
static std::shared_ptr<HciTransport> Create(std::shared_ptr<HciTransport> transport,
std::shared_ptr<std::ostream> outputStream = nullptr,
std::shared_ptr<PcapFilter>
/*filter*/ = nullptr) {
return std::make_shared<HciSniffer>(transport, outputStream);
}
// Sets and initializes the output stream
void SetOutputStream(std::shared_ptr<std::ostream> outputStream);
void SetPcapFilter(std::shared_ptr<PcapFilter> filter);
void Send(PacketType packet_type,
const std::vector<uint8_t>& packet) override;
void RegisterCallbacks(PacketCallback packet_callback, CloseCallback close_callback)
override;
void Tick() override;
void Close() override;
private:
void AppendRecord(PacketDirection direction, PacketType type, const std::vector<uint8_t>& packet);
std::shared_ptr<std::ostream> output_;
std::shared_ptr<HciTransport> transport_;
std::shared_ptr<rootcanal::PcapFilter> filter_;
};
} // namespace rootcanal
