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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "chrome/browser/ash/file_system_provider/operations/write_file.h"
#include <utility>
#include "base/containers/span.h"
#include "base/trace_event/trace_event.h"
#include "base/values.h"
#include "chrome/common/extensions/api/file_system_provider.h"
#include "chrome/common/extensions/api/file_system_provider_internal.h"
namespace ash::file_system_provider::operations {
WriteFile::WriteFile(RequestDispatcher* dispatcher,
const ProvidedFileSystemInfo& file_system_info,
int file_handle,
scoped_refptr<net::IOBuffer> buffer,
int64_t offset,
size_t length,
storage::AsyncFileUtil::StatusCallback callback)
: Operation(dispatcher, file_system_info),
file_handle_(file_handle),
buffer_(buffer),
offset_(offset),
length_(length),
callback_(std::move(callback)) {}
WriteFile::~WriteFile() = default;
bool WriteFile::Execute(int request_id) {
TRACE_EVENT0("file_system_provider", "WriteFile::Execute");
using extensions::api::file_system_provider::WriteFileRequestedOptions;
if (!file_system_info_.writable())
return false;
WriteFileRequestedOptions options;
options.file_system_id = file_system_info_.file_system_id();
options.request_id = request_id;
options.open_request_id = file_handle_;
options.offset = offset_;
// Length is not passed directly since it can be accessed via data.byteLength.
// Set the data directly on base::Value() to avoid an extra string copy.
DCHECK(buffer_.get());
base::Value::Dict options_as_value = options.ToValue();
options_as_value.Set(
"data",
base::Value(base::as_bytes(base::span(buffer_->data(), length_))));
base::Value::List event_args;
event_args.Append(std::move(options_as_value));
return SendEvent(
request_id,
extensions::events::FILE_SYSTEM_PROVIDER_ON_WRITE_FILE_REQUESTED,
extensions::api::file_system_provider::OnWriteFileRequested::kEventName,
std::move(event_args));
}
void WriteFile::OnSuccess(/*request_id=*/int,
/*result=*/const RequestValue&,
/*has_more=*/bool) {
TRACE_EVENT0("file_system_provider", "WriteFile::OnSuccess");
DCHECK(callback_);
std::move(callback_).Run(base::File::FILE_OK);
}
void WriteFile::OnError(/*request_id=*/int,
/*result=*/const RequestValue&,
base::File::Error error) {
TRACE_EVENT0("file_system_provider", "WriteFile::OnError");
DCHECK(callback_);
std::move(callback_).Run(error);
}
} // namespace ash::file_system_provider::operations
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