| // Copyright 2024 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/on_device_translation/file_operation_proxy_impl.h" |
| |
| #include "base/files/file_util.h" |
| |
| namespace on_device_translation { |
| |
| FileOperationProxyImpl::FileOperationProxyImpl( |
| mojo::PendingReceiver<FileOperationProxy> proxy_receiver, |
| scoped_refptr<base::SequencedTaskRunner> task_runner, |
| std::vector<base::FilePath> package_paths) |
| : receiver_(this, std::move(proxy_receiver), task_runner), |
| package_paths_(std::move(package_paths)) {} |
| |
| FileOperationProxyImpl::~FileOperationProxyImpl() = default; |
| |
| void FileOperationProxyImpl::FileExists(uint32_t package_index, |
| const base::FilePath& relative_path, |
| FileExistsCallback callback) { |
| const base::FilePath file_path = GetFilePath(package_index, relative_path); |
| if (file_path.empty()) { |
| // Invalid `path` was passed. |
| // Calling `ReportBadMessage` to crash the service, because this is |
| // likely caused by a compromised service. We check the validity of the |
| // `path` before passing it from the service in translate_kit_client.cc. |
| receiver_.ReportBadMessage("Invalid `path` was passed."); |
| return; |
| } |
| if (!base::PathExists(file_path)) { |
| // File doesn't exist. |
| std::move(callback).Run(/*exists=*/false, /*is_directory=*/false); |
| return; |
| } |
| std::move(callback).Run( |
| /*exists=*/true, |
| /*is_directory=*/base::DirectoryExists(file_path)); |
| } |
| |
| void FileOperationProxyImpl::Open(uint32_t package_index, |
| const base::FilePath& relative_path, |
| OpenCallback callback) { |
| const base::FilePath file_path = GetFilePath(package_index, relative_path); |
| if (file_path.empty()) { |
| // Invalid `path` was passed. |
| // Calling `ReportBadMessage` to crash the service, because this is |
| // likely caused by a compromised service. We check the validity of the |
| // `path` before passing it from the service in translate_kit_client.cc. |
| receiver_.ReportBadMessage("Invalid `path` was passed."); |
| return; |
| } |
| // Sends a file object only if the file exists and is not a directory. |
| std::move(callback).Run( |
| base::PathExists(file_path) && !base::DirectoryExists(file_path) |
| ? base::File(file_path, base::File::FLAG_OPEN | base::File::FLAG_READ) |
| : base::File()); |
| } |
| |
| base::FilePath FileOperationProxyImpl::GetFilePath( |
| uint32_t package_index, |
| const base::FilePath& relative_path) const { |
| if (package_index >= package_paths_.size()) { |
| // Invalid package index. |
| return base::FilePath(); |
| } |
| if (relative_path.IsAbsolute() || relative_path.ReferencesParent()) { |
| // Invalid relative path. |
| return base::FilePath(); |
| } |
| return package_paths_[package_index].Append(relative_path); |
| } |
| |
| } // namespace on_device_translation |