| // Copyright 2021 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "remoting/base/file_host_settings.h" |
| |
| #include "base/files/file_util.h" |
| #include "base/files/important_file_writer.h" |
| #include "base/json/json_file_value_serializer.h" |
| #include "base/json/json_string_value_serializer.h" |
| #include "base/logging.h" |
| #include "base/threading/sequenced_task_runner_handle.h" |
| #include "base/values.h" |
| #include "remoting/base/logging.h" |
| |
| namespace remoting { |
| |
| FileHostSettings::FileHostSettings(const base::FilePath& settings_file) |
| : settings_file_(settings_file) {} |
| |
| FileHostSettings::~FileHostSettings() = default; |
| |
| void FileHostSettings::InitializeInstance() { |
| // TODO(yuweih): Make FileHostSettings detect changes of the settings file. |
| if (settings_) { |
| return; |
| } |
| |
| if (!base::PathIsReadable(settings_file_)) { |
| HOST_LOG << "Host settings file " << settings_file_ << " does not exist."; |
| return; |
| } |
| JSONFileValueDeserializer deserializer(settings_file_); |
| int error_code; |
| std::string error_message; |
| settings_ = deserializer.Deserialize(&error_code, &error_message); |
| if (!settings_) { |
| LOG(WARNING) << "Failed to load " << settings_file_ |
| << ". Code: " << error_code << ", message: " << error_message; |
| return; |
| } |
| HOST_LOG << "Host settings loaded."; |
| } |
| |
| std::string FileHostSettings::GetString( |
| const HostSettingKey key, |
| const std::string& default_value) const { |
| #if !defined(NDEBUG) |
| if (task_runner_for_checking_sequence_) { |
| DCHECK(task_runner_for_checking_sequence_->RunsTasksInCurrentSequence()); |
| } |
| #endif |
| |
| if (!settings_) { |
| VLOG(1) << "Either Initialize() has not been called, or the settings file " |
| "doesn't exist."; |
| return default_value; |
| } |
| std::string* string_value = settings_->FindStringKey(key); |
| if (!string_value) { |
| return default_value; |
| } |
| return *string_value; |
| } |
| |
| void FileHostSettings::SetString(const HostSettingKey key, |
| const std::string& value) { |
| #if !defined(NDEBUG) |
| if (task_runner_for_checking_sequence_) { |
| DCHECK(task_runner_for_checking_sequence_->RunsTasksInCurrentSequence()); |
| } else { |
| task_runner_for_checking_sequence_ = base::SequencedTaskRunnerHandle::Get(); |
| } |
| #endif |
| |
| if (!settings_) { |
| VLOG(1) << "Settings file didn't exist. New file will be created."; |
| settings_ = std::make_unique<base::Value>(base::Value::Type::DICTIONARY); |
| } |
| settings_->SetStringKey(key, value); |
| |
| std::string json; |
| JSONStringValueSerializer serializer(&json); |
| if (!serializer.Serialize(*settings_)) { |
| LOG(ERROR) << "Failed to serialize host settings JSON"; |
| return; |
| } |
| if (!base::ImportantFileWriter::WriteFileAtomically(settings_file_, json)) { |
| LOG(ERROR) << "Can't write host settings file to " << settings_file_; |
| } |
| } |
| |
| } // namespace remoting |