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// Copyright 2023 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/file_system_access/cloud_identifier/cloud_identifier_util_ash.h"
#include <memory>
#include <optional>
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/strings/string_util.h"
#include "chrome/browser/ash/crosapi/crosapi_util.h"
#include "chrome/browser/ash/drive/drive_integration_service.h"
#include "chrome/browser/ash/drive/file_system_util.h"
#include "chrome/browser/ash/file_manager/fileapi_util.h"
#include "chrome/browser/ash/file_system_provider/mount_path_util.h"
#include "chrome/browser/ash/file_system_provider/provided_file_system_interface.h"
#include "chrome/browser/ash/profiles/profile_helper.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chromeos/ash/components/drivefs/drivefs_util.h"
#include "chromeos/ash/components/drivefs/mojom/drivefs.mojom.h"
#include "chromeos/crosapi/mojom/file_system_access_cloud_identifier.mojom.h"
#include "components/drive/file_errors.h"
#include "content/public/browser/browser_thread.h"
#include "storage/browser/file_system/file_system_context.h"
namespace {
constexpr char kDriveFsProviderName[] = "drive.google.com";
// Files/directories which have not yet been uploaded have not received a proper
// ID yet and will have a "local" ID instead. This prefix is defined upstream at
// http://google3/apps/drive/cello/common/item_util.h
constexpr char kDriveFsLocalPrefix[] = "local-";
bool MatchesExpectedDriveFsType(crosapi::mojom::HandleType expected_handle_type,
drivefs::mojom::FileMetadata::Type type) {
switch (expected_handle_type) {
case crosapi::mojom::HandleType::kUnknown:
return false;
case crosapi::mojom::HandleType::kFile:
return drivefs::IsAFile(type);
case crosapi::mojom::HandleType::kDirectory:
return drivefs::IsADirectory(type);
}
}
bool MatchesExpectedProvidedFsType(
crosapi::mojom::HandleType expected_handle_type,
bool is_directory) {
switch (expected_handle_type) {
case crosapi::mojom::HandleType::kUnknown:
return false;
case crosapi::mojom::HandleType::kFile:
return !is_directory;
case crosapi::mojom::HandleType::kDirectory:
return is_directory;
}
}
void DidGetDriveFSMetadata(crosapi::mojom::HandleType expected_handle_type,
crosapi::FileSystemAccessCloudIdentifierProviderAsh::
GetCloudIdentifierCallback callback,
drive::FileError error,
drivefs::mojom::FileMetadataPtr metadata) {
if (error != drive::FILE_ERROR_OK || metadata.is_null() ||
!metadata->item_id.has_value() ||
base::StartsWith(metadata->item_id.value(), kDriveFsLocalPrefix) ||
!MatchesExpectedDriveFsType(expected_handle_type, metadata->type)) {
std::move(callback).Run(nullptr);
return;
}
const std::string& item_id = metadata->item_id.value();
crosapi::mojom::FileSystemAccessCloudIdentifierPtr cloud_identifier =
crosapi::mojom::FileSystemAccessCloudIdentifier::New(kDriveFsProviderName,
item_id);
std::move(callback).Run(std::move(cloud_identifier));
}
void DidGetProvidedFilesystemMetada(
crosapi::mojom::HandleType expected_handle_type,
crosapi::FileSystemAccessCloudIdentifierProviderAsh::
GetCloudIdentifierCallback callback,
std::unique_ptr<ash::file_system_provider::EntryMetadata> metadata,
base::File::Error result) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (result != base::File::FILE_OK || !metadata ||
!metadata->cloud_identifier || !metadata->is_directory.get() ||
!MatchesExpectedProvidedFsType(expected_handle_type,
*metadata->is_directory)) {
std::move(callback).Run(nullptr);
return;
}
crosapi::mojom::FileSystemAccessCloudIdentifierPtr cloud_identifier =
crosapi::mojom::FileSystemAccessCloudIdentifier::New(
metadata->cloud_identifier->provider_name,
metadata->cloud_identifier->id);
std::move(callback).Run(std::move(cloud_identifier));
}
} // namespace
namespace cloud_identifier {
void GetCloudIdentifier(const base::FilePath& virtual_path,
crosapi::mojom::HandleType handle_type,
crosapi::FileSystemAccessCloudIdentifierProviderAsh::
GetCloudIdentifierCallback callback) {
Profile* profile =
g_browser_process->profile_manager()->GetActiveUserProfile();
CHECK(profile);
storage::FileSystemContext* file_system_context =
file_manager::util::GetFileManagerFileSystemContext(profile);
CHECK(file_system_context);
const storage::FileSystemURL url =
file_system_context->CreateCrackedFileSystemURL(
blink::StorageKey(), storage::kFileSystemTypeExternal, virtual_path);
CHECK(url.is_valid());
if (url.type() == storage::kFileSystemTypeDriveFs) {
auto* drive_integration_service =
drive::util::GetIntegrationServiceByProfile(profile);
drive_integration_service->GetMetadata(
url.path(), base::BindOnce(&DidGetDriveFSMetadata, handle_type,
std::move(callback)));
return;
}
if (url.type() == storage::FileSystemType::kFileSystemTypeProvided) {
ash::file_system_provider::util::FileSystemURLParser parser(url);
if (!parser.Parse()) {
std::move(callback).Run(nullptr);
return;
}
ash::file_system_provider::ProvidedFileSystemInterface::MetadataFieldMask
fields = ash::file_system_provider::ProvidedFileSystemInterface::
METADATA_FIELD_CLOUD_IDENTIFIER |
ash::file_system_provider::ProvidedFileSystemInterface::
METADATA_FIELD_IS_DIRECTORY;
parser.file_system()->GetMetadata(
parser.file_path(), fields,
base::BindOnce(&DidGetProvidedFilesystemMetada, handle_type,
std::move(callback)));
return;
}
// Unsupported file system type.
std::move(callback).Run(nullptr);
}
} // namespace cloud_identifier
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