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// SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <chrono>
#include <sstream>
#include "common/logging/log.h"
#include "common/settings.h"
#include "common/time_zone.h"
#include "core/core.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/nca_metadata.h"
#include "core/file_sys/registered_cache.h"
#include "core/file_sys/romfs.h"
#include "core/file_sys/system_archive/system_archive.h"
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_types.h"
#include "core/hle/result.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/time/errors.h"
#include "core/hle/service/time/time_manager.h"
#include "core/hle/service/time/time_zone_content_manager.h"
namespace Service::Time::TimeZone {
constexpr u64 time_zone_binary_titleid{0x010000000000080E};
static FileSys::VirtualDir GetTimeZoneBinary(Core::System& system) {
const auto* nand{system.GetFileSystemController().GetSystemNANDContents()};
const auto nca{nand->GetEntry(time_zone_binary_titleid, FileSys::ContentRecordType::Data)};
FileSys::VirtualFile romfs;
if (nca) {
romfs = nca->GetRomFS();
}
if (!romfs) {
romfs = FileSys::SystemArchive::SynthesizeSystemArchive(time_zone_binary_titleid);
}
if (!romfs) {
LOG_ERROR(Service_Time, "Failed to find or synthesize {:016X!}", time_zone_binary_titleid);
return {};
}
return FileSys::ExtractRomFS(romfs);
}
static std::vector<std::string> BuildLocationNameCache(Core::System& system) {
const FileSys::VirtualDir extracted_romfs{GetTimeZoneBinary(system)};
if (!extracted_romfs) {
LOG_ERROR(Service_Time, "Failed to extract RomFS for {:016X}!", time_zone_binary_titleid);
return {};
}
const FileSys::VirtualFile binary_list{extracted_romfs->GetFile("binaryList.txt")};
if (!binary_list) {
LOG_ERROR(Service_Time, "{:016X} has no file binaryList.txt!", time_zone_binary_titleid);
return {};
}
std::vector<char> raw_data(binary_list->GetSize() + 1);
binary_list->ReadBytes<char>(raw_data.data(), binary_list->GetSize());
std::stringstream data_stream{raw_data.data()};
std::string name;
std::vector<std::string> location_name_cache;
while (std::getline(data_stream, name)) {
name.pop_back(); // Remove carriage return
location_name_cache.emplace_back(std::move(name));
}
return location_name_cache;
}
TimeZoneContentManager::TimeZoneContentManager(Core::System& system_)
: system{system_}, location_name_cache{BuildLocationNameCache(system)} {}
void TimeZoneContentManager::Initialize(TimeManager& time_manager) {
const auto timezone_setting =
Settings::GetTimeZoneString(Settings::values.time_zone_index.GetValue());
if (FileSys::VirtualFile vfs_file;
GetTimeZoneInfoFile(timezone_setting, vfs_file) == ResultSuccess) {
const auto time_point{
time_manager.GetStandardSteadyClockCore().GetCurrentTimePoint(system)};
time_manager.SetupTimeZoneManager(timezone_setting, time_point, location_name_cache, {},
vfs_file);
} else {
time_zone_manager.MarkAsInitialized();
}
}
Result TimeZoneContentManager::LoadTimeZoneRule(TimeZoneRule& rules,
const std::string& location_name) const {
FileSys::VirtualFile vfs_file;
if (const Result result{GetTimeZoneInfoFile(location_name, vfs_file)};
result != ResultSuccess) {
return result;
}
return time_zone_manager.ParseTimeZoneRuleBinary(rules, vfs_file);
}
bool TimeZoneContentManager::IsLocationNameValid(const std::string& location_name) const {
return std::find(location_name_cache.begin(), location_name_cache.end(), location_name) !=
location_name_cache.end();
}
Result TimeZoneContentManager::GetTimeZoneInfoFile(const std::string& location_name,
FileSys::VirtualFile& vfs_file) const {
if (!IsLocationNameValid(location_name)) {
return ERROR_TIME_NOT_FOUND;
}
const FileSys::VirtualDir extracted_romfs{GetTimeZoneBinary(system)};
if (!extracted_romfs) {
LOG_ERROR(Service_Time, "Failed to extract RomFS for {:016X}!", time_zone_binary_titleid);
return ERROR_TIME_NOT_FOUND;
}
const FileSys::VirtualDir zoneinfo_dir{extracted_romfs->GetSubdirectory("zoneinfo")};
if (!zoneinfo_dir) {
LOG_ERROR(Service_Time, "{:016X} has no directory zoneinfo!", time_zone_binary_titleid);
return ERROR_TIME_NOT_FOUND;
}
vfs_file = zoneinfo_dir->GetFileRelative(location_name);
if (!vfs_file) {
LOG_WARNING(Service_Time, "{:016X} has no file \"{}\"! Using system timezone.",
time_zone_binary_titleid, location_name);
const std::string system_time_zone{Common::TimeZone::FindSystemTimeZone()};
vfs_file = zoneinfo_dir->GetFile(system_time_zone);
}
if (!vfs_file) {
LOG_WARNING(Service_Time, "{:016X} has no file \"{}\"! Using default timezone.",
time_zone_binary_titleid, location_name);
vfs_file = zoneinfo_dir->GetFile(Common::TimeZone::GetDefaultTimeZone());
}
if (!vfs_file) {
LOG_ERROR(Service_Time, "{:016X} has no file \"{}\"!", time_zone_binary_titleid,
location_name);
return ERROR_TIME_NOT_FOUND;
}
return ResultSuccess;
}
} // namespace Service::Time::TimeZone
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