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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/file_transfer/fake_file_operations.h"
#include <algorithm>
#include <memory>
#include <utility>
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/task/sequenced_task_runner.h"
namespace remoting {
class FakeFileOperations::FakeFileReader : public FileOperations::Reader {
public:
FakeFileReader(TestIo* test_io);
~FakeFileReader() override;
void Open(OpenCallback callback) override;
void ReadChunk(std::size_t size, ReadCallback callback) override;
const base::FilePath& filename() const override;
std::uint64_t size() const override;
State state() const override;
private:
void DoOpen(OpenCallback callback);
void DoReadChunk(std::size_t size, ReadCallback callback);
FileOperations::State state_ = FileOperations::kCreated;
raw_ptr<TestIo> test_io_;
protocol::FileTransferResult<InputFile> input_file_;
base::FilePath filename_;
std::size_t filesize_ = 0;
std::size_t read_offset_ = 0;
base::WeakPtrFactory<FakeFileReader> weak_ptr_factory_{this};
};
class FakeFileOperations::FakeFileWriter : public FileOperations::Writer {
public:
FakeFileWriter(TestIo* test_io);
~FakeFileWriter() override;
void Open(const base::FilePath& filename, Callback callback) override;
void WriteChunk(std::vector<std::uint8_t> data, Callback callback) override;
void Close(Callback callback) override;
FileOperations::State state() const override;
private:
void DoOpen(Callback callback);
void DoWrite(std::vector<std::uint8_t> data, Callback callback);
void DoClose(Callback callback);
FileOperations::State state_ = FileOperations::kCreated;
raw_ptr<TestIo> test_io_;
base::FilePath filename_;
std::vector<std::vector<std::uint8_t>> chunks_;
base::WeakPtrFactory<FakeFileWriter> weak_ptr_factory_{this};
};
std::unique_ptr<FileOperations::Reader> FakeFileOperations::CreateReader() {
return std::make_unique<FakeFileReader>(test_io_);
}
std::unique_ptr<FileOperations::Writer> FakeFileOperations::CreateWriter() {
return std::make_unique<FakeFileWriter>(test_io_);
}
FakeFileOperations::FakeFileOperations(FakeFileOperations::TestIo* test_io)
: test_io_(test_io) {}
FakeFileOperations::~FakeFileOperations() = default;
FakeFileOperations::OutputFile::OutputFile(
base::FilePath filename,
bool failed,
std::vector<std::vector<std::uint8_t>> chunks)
: filename(std::move(filename)),
failed(failed),
chunks(std::move(chunks)) {}
FakeFileOperations::OutputFile::OutputFile(const OutputFile& other) = default;
FakeFileOperations::OutputFile::OutputFile(OutputFile&& other) = default;
FakeFileOperations::OutputFile& FakeFileOperations::OutputFile::operator=(
const OutputFile&) = default;
FakeFileOperations::OutputFile& FakeFileOperations::OutputFile::operator=(
OutputFile&&) = default;
FakeFileOperations::OutputFile::~OutputFile() = default;
FakeFileOperations::InputFile::InputFile(
base::FilePath filename,
std::vector<std::uint8_t> data,
std::optional<protocol::FileTransfer_Error> io_error)
: filename(std::move(filename)),
data(std::move(data)),
io_error(std::move(io_error)) {}
FakeFileOperations::InputFile::InputFile() = default;
FakeFileOperations::InputFile::InputFile(const InputFile&) = default;
FakeFileOperations::InputFile::InputFile(InputFile&&) = default;
FakeFileOperations::InputFile& FakeFileOperations::InputFile::operator=(
const InputFile&) = default;
FakeFileOperations::InputFile& FakeFileOperations::InputFile::operator=(
InputFile&&) = default;
FakeFileOperations::InputFile::~InputFile() = default;
FakeFileOperations::TestIo::TestIo() = default;
FakeFileOperations::TestIo::TestIo(const TestIo& other) = default;
FakeFileOperations::TestIo::~TestIo() = default;
FakeFileOperations::FakeFileReader::FakeFileReader(TestIo* test_io)
: test_io_(test_io) {}
FakeFileOperations::FakeFileReader::~FakeFileReader() = default;
void FakeFileOperations::FakeFileReader::Open(
FileOperations::Reader::OpenCallback callback) {
CHECK_EQ(kCreated, state_) << "Open called twice";
state_ = kBusy;
input_file_ = test_io_->input_file;
base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE,
base::BindOnce(&FakeFileReader::DoOpen, weak_ptr_factory_.GetWeakPtr(),
std::move(callback)));
}
void FakeFileOperations::FakeFileReader::ReadChunk(
std::size_t size,
FileOperations::Reader::ReadCallback callback) {
CHECK_EQ(kReady, state_) << "ReadChunk called when writer not ready";
state_ = kBusy;
base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(&FakeFileReader::DoReadChunk,
weak_ptr_factory_.GetWeakPtr(), size,
std::move(callback)));
}
const base::FilePath& FakeFileOperations::FakeFileReader::filename() const {
return filename_;
}
std::uint64_t FakeFileOperations::FakeFileReader::size() const {
return filesize_;
}
FileOperations::State FakeFileOperations::FakeFileReader::state() const {
return state_;
}
void FakeFileOperations::FakeFileReader::DoOpen(
FileOperations::Reader::OpenCallback callback) {
if (input_file_) {
filename_ = input_file_->filename;
filesize_ = input_file_->data.size();
state_ = kReady;
std::move(callback).Run(kSuccessTag);
} else {
state_ = kFailed;
std::move(callback).Run(input_file_.error());
}
}
void FakeFileOperations::FakeFileReader::DoReadChunk(
std::size_t size,
FileOperations::Reader::ReadCallback callback) {
if (size == 0) {
state_ = kReady;
std::move(callback).Run(std::vector<std::uint8_t>());
return;
}
std::size_t remaining_data = input_file_->data.size() - read_offset_;
if (remaining_data == 0) {
if (input_file_->io_error) {
state_ = kFailed;
std::move(callback).Run(*input_file_->io_error);
} else {
state_ = kComplete;
std::move(callback).Run(std::vector<std::uint8_t>());
}
return;
}
std::size_t read_size = std::min(size, remaining_data);
state_ = kReady;
std::move(callback).Run(std::vector<std::uint8_t>(
input_file_->data.begin() + read_offset_,
input_file_->data.begin() + read_offset_ + read_size));
read_offset_ += read_size;
}
FakeFileOperations::FakeFileWriter::FakeFileWriter(TestIo* test_io)
: test_io_(test_io) {}
FakeFileOperations::FakeFileWriter::~FakeFileWriter() {
if (state_ == FileOperations::kCreated ||
state_ == FileOperations::kComplete ||
state_ == FileOperations::kFailed) {
return;
}
test_io_->files_written.push_back(
OutputFile(filename_, true /* failed */, std::move(chunks_)));
}
void FakeFileOperations::FakeFileWriter::Open(const base::FilePath& filename,
Callback callback) {
CHECK_EQ(kCreated, state_) << "Open called twice";
state_ = kBusy;
filename_ = filename;
base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE,
base::BindOnce(&FakeFileWriter::DoOpen, weak_ptr_factory_.GetWeakPtr(),
std::move(callback)));
}
void FakeFileOperations::FakeFileWriter::WriteChunk(
std::vector<std::uint8_t> data,
Callback callback) {
CHECK_EQ(kReady, state_) << "WriteChunk called when writer not ready";
state_ = kBusy;
base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE,
base::BindOnce(&FakeFileWriter::DoWrite, weak_ptr_factory_.GetWeakPtr(),
std::move(data), std::move(callback)));
}
void FakeFileOperations::FakeFileWriter::Close(Callback callback) {
CHECK_EQ(kReady, state_) << "Close called when writer not ready";
state_ = kBusy;
base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE,
base::BindOnce(&FakeFileWriter::DoClose, weak_ptr_factory_.GetWeakPtr(),
std::move(callback)));
}
FileOperations::State FakeFileOperations::FakeFileWriter::state() const {
return state_;
}
void FakeFileOperations::FakeFileWriter::DoOpen(Callback callback) {
if (!test_io_->io_error) {
state_ = kReady;
std::move(callback).Run(kSuccessTag);
} else {
state_ = kFailed;
std::move(callback).Run(*test_io_->io_error);
}
}
void FakeFileOperations::FakeFileWriter::DoWrite(std::vector<std::uint8_t> data,
Callback callback) {
if (!test_io_->io_error) {
chunks_.push_back(std::move(data));
state_ = kReady;
std::move(callback).Run(kSuccessTag);
} else {
state_ = kFailed;
test_io_->files_written.push_back(
OutputFile(filename_, true /* failed */, std::move(chunks_)));
std::move(callback).Run(*test_io_->io_error);
}
}
void FakeFileOperations::FakeFileWriter::DoClose(Callback callback) {
if (!test_io_->io_error) {
test_io_->files_written.push_back(
OutputFile(filename_, false /* failed */, std::move(chunks_)));
state_ = kComplete;
std::move(callback).Run(kSuccessTag);
} else {
state_ = kFailed;
test_io_->files_written.push_back(
OutputFile(filename_, true /* failed */, std::move(chunks_)));
std::move(callback).Run(*test_io_->io_error);
}
}
} // namespace remoting
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