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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/dbus/virtual_file_request_service_provider.h"
#include <stdint.h>
#include <memory>
#include <string>
#include <utility>
#include "base/files/scoped_file.h"
#include "base/functional/bind.h"
#include "chrome/browser/ash/arc/fileapi/arc_file_system_bridge.h"
#include "chrome/browser/ash/arc/session/arc_session_manager.h"
#include "chrome/browser/profiles/profile.h"
#include "dbus/message.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace ash {
namespace {
arc::ArcFileSystemBridge* GetArcFileSystemBridge() {
arc::ArcSessionManager* session_manager = arc::ArcSessionManager::Get();
if (!session_manager)
return nullptr;
Profile* profile = session_manager->profile();
if (!profile)
return nullptr;
return arc::ArcFileSystemBridge::GetForBrowserContext(profile);
}
} // namespace
VirtualFileRequestServiceProvider::VirtualFileRequestServiceProvider() =
default;
VirtualFileRequestServiceProvider::~VirtualFileRequestServiceProvider() =
default;
void VirtualFileRequestServiceProvider::Start(
scoped_refptr<dbus::ExportedObject> exported_object) {
exported_object->ExportMethod(
chromeos::kVirtualFileRequestServiceInterface,
chromeos::kVirtualFileRequestServiceHandleReadRequestMethod,
base::BindRepeating(&VirtualFileRequestServiceProvider::HandleReadRequest,
weak_ptr_factory_.GetWeakPtr()),
base::BindOnce([](const std::string& interface_name,
const std::string& method_name, bool success) {
LOG_IF(ERROR, !success)
<< "Failed to export " << interface_name << "." << method_name;
}));
exported_object->ExportMethod(
chromeos::kVirtualFileRequestServiceInterface,
chromeos::kVirtualFileRequestServiceHandleIdReleasedMethod,
base::BindRepeating(&VirtualFileRequestServiceProvider::HandleIdReleased,
weak_ptr_factory_.GetWeakPtr()),
base::BindOnce([](const std::string& interface_name,
const std::string& method_name, bool success) {
LOG_IF(ERROR, !success)
<< "Failed to export " << interface_name << "." << method_name;
}));
}
void VirtualFileRequestServiceProvider::HandleReadRequest(
dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender) {
std::string id;
int64_t offset = 0;
int64_t size = 0;
base::ScopedFD pipe_write_end;
dbus::MessageReader reader(method_call);
if (!reader.PopString(&id) || !reader.PopInt64(&offset) ||
!reader.PopInt64(&size) || !reader.PopFileDescriptor(&pipe_write_end)) {
std::move(response_sender)
.Run(dbus::ErrorResponse::FromMethodCall(
method_call, DBUS_ERROR_INVALID_ARGS, std::string()));
return;
}
arc::ArcFileSystemBridge* bridge = GetArcFileSystemBridge();
if (bridge &&
bridge->HandleReadRequest(id, offset, size, std::move(pipe_write_end))) {
std::move(response_sender).Run(dbus::Response::FromMethodCall(method_call));
} else {
std::move(response_sender)
.Run(dbus::ErrorResponse::FromMethodCall(method_call, DBUS_ERROR_FAILED,
std::string()));
}
}
void VirtualFileRequestServiceProvider::HandleIdReleased(
dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender) {
std::string id;
dbus::MessageReader reader(method_call);
if (!reader.PopString(&id)) {
std::move(response_sender)
.Run(dbus::ErrorResponse::FromMethodCall(
method_call, DBUS_ERROR_INVALID_ARGS, std::string()));
return;
}
arc::ArcFileSystemBridge* bridge = GetArcFileSystemBridge();
if (bridge && bridge->HandleIdReleased(id)) {
std::move(response_sender).Run(dbus::Response::FromMethodCall(method_call));
} else {
std::move(response_sender)
.Run(dbus::ErrorResponse::FromMethodCall(method_call, DBUS_ERROR_FAILED,
std::string()));
}
}
} // namespace ash
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