// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <chrono>
#include "core/core.h"
#include "core/core_timing.h"
#include "common/settings.h"
#include "common/time_zone.h"
#include "core/file_sys/vfs/vfs.h"
#include "core/hle/kernel/svc.h"
#include "core/hle/service/glue/time/manager.h"
#include "core/hle/service/glue/time/time_zone_binary.h"
#include "core/hle/service/psc/time/service_manager.h"
#include "core/hle/service/psc/time/static.h"
#include "core/hle/service/psc/time/system_clock.h"
#include "core/hle/service/psc/time/time_zone_service.h"
#include "core/hle/service/set/system_settings_server.h"
#include "core/hle/service/sm/sm.h"
namespace Service::Glue::Time {
namespace {
template <typename T>
T GetSettingsItemValue(std::shared_ptr<Service::Set::ISystemSettingsServer>& set_sys,
const char* category, const char* name) {
std::vector<u8> interval_buf;
auto res = set_sys->GetSettingsItemValue(interval_buf, category, name);
ASSERT(res == ResultSuccess);
T v{};
std::memcpy(&v, interval_buf.data(), sizeof(T));
return v;
}
s64 CalendarTimeToEpoch(Service::PSC::Time::CalendarTime calendar) {
constexpr auto is_leap = [](s32 year) -> bool {
return (((year) % 4) == 0 && (((year) % 100) != 0 || ((year) % 400) == 0));
};
constexpr std::array<s32, 12> MonthStartDayOfYear{
0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334,
};
s16 month_s16{calendar.month};
s8 month{static_cast<s8>(((month_s16 * 43) & ~std::numeric_limits<s16>::max()) +
((month_s16 * 43) >> 9))};
s8 month_index{static_cast<s8>(calendar.month - 12 * month)};
if (month_index == 0) {
month_index = 12;
}
s32 year{(month + calendar.year) - !month_index};
s32 v8{year >= 0 ? year : year + 3};
s64 days_since_epoch = calendar.day + MonthStartDayOfYear[month_index - 1];
days_since_epoch += (year * 365) + (v8 / 4) - (year / 100) + (year / 400) - 365;
if (month_index <= 2 && is_leap(year)) {
days_since_epoch--;
}
auto epoch_s{((24ll * days_since_epoch + calendar.hour) * 60ll + calendar.minute) * 60ll +
calendar.second};
return epoch_s - 62135683200ll;
}
s64 GetEpochTimeFromInitialYear(std::shared_ptr<Service::Set::ISystemSettingsServer>& set_sys) {
Service::PSC::Time::CalendarTime calendar{
.year = GetSettingsItemValue<s16>(set_sys, "time", "standard_user_clock_initial_year"),
.month = 1,
.day = 1,
.hour = 0,
.minute = 0,
.second = 0,
};
return CalendarTimeToEpoch(calendar);
}
Service::PSC::Time::LocationName GetTimeZoneString(Service::PSC::Time::LocationName& in_name) {
auto configured_zone = Settings::GetTimeZoneString(Settings::values.time_zone_index.GetValue());
Service::PSC::Time::LocationName configured_name{};
std::memcpy(configured_name.name.data(), configured_zone.data(),
std::min(configured_name.name.size(), configured_zone.size()));
if (!IsTimeZoneBinaryValid(configured_name)) {
configured_zone = Common::TimeZone::FindSystemTimeZone();
configured_name = {};
std::memcpy(configured_name.name.data(), configured_zone.data(),
std::min(configured_name.name.size(), configured_zone.size()));
}
ASSERT_MSG(IsTimeZoneBinaryValid(configured_name), "Invalid time zone {}!",
configured_name.name.data());
return configured_name;
}
} // namespace
TimeManager::TimeManager(Core::System& system)
: m_steady_clock_resource{system}, m_worker{system, m_steady_clock_resource,
m_file_timestamp_worker} {
m_time_m =
system.ServiceManager().GetService<Service::PSC::Time::ServiceManager>("time:m", true);
auto res = m_time_m->GetStaticServiceAsServiceManager(m_time_sm);
ASSERT(res == ResultSuccess);
m_set_sys =
system.ServiceManager().GetService<Service::Set::ISystemSettingsServer>("set:sys", true);
res = MountTimeZoneBinary(system);
ASSERT(res == ResultSuccess);
m_worker.Initialize(m_time_sm, m_set_sys);
res = m_time_sm->GetStandardUserSystemClock(m_file_timestamp_worker.m_system_clock);
ASSERT(res == ResultSuccess);
res = m_time_sm->GetTimeZoneService(m_file_timestamp_worker.m_time_zone);
ASSERT(res == ResultSuccess);
res = SetupStandardSteadyClockCore();
ASSERT(res == ResultSuccess);
Service::PSC::Time::SystemClockContext user_clock_context{};
res = m_set_sys->GetUserSystemClockContext(user_clock_context);
ASSERT(res == ResultSuccess);
// TODO the local clock should initialise with this epoch time, and be updated somewhere else on
// first boot to update it, but I haven't been able to find that point (likely via ntc's auto
// correct as it's defaulted to be enabled). So to get a time that isn't stuck in the past for
// first boot, grab the current real seconds.
auto epoch_time{GetEpochTimeFromInitialYear(m_set_sys)};
if (user_clock_context == Service::PSC::Time::SystemClockContext{}) {
m_steady_clock_resource.GetRtcTimeInSeconds(epoch_time);
}
res = m_time_m->SetupStandardLocalSystemClockCore(user_clock_context, epoch_time);
ASSERT(res == ResultSuccess);
Service::PSC::Time::SystemClockContext network_clock_context{};
res = m_set_sys->GetNetworkSystemClockContext(network_clock_context);
ASSERT(res == ResultSuccess);
auto network_accuracy_m{GetSettingsItemValue<s32>(
m_set_sys, "time", "standard_network_clock_sufficient_accuracy_minutes")};
auto one_minute_ns{
std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::minutes(1)).count()};
s64 network_accuracy_ns{network_accuracy_m * one_minute_ns};
res = m_time_m->SetupStandardNetworkSystemClockCore(network_clock_context, network_accuracy_ns);
ASSERT(res == ResultSuccess);
bool is_automatic_correction_enabled{};
res = m_set_sys->IsUserSystemClockAutomaticCorrectionEnabled(is_automatic_correction_enabled);
ASSERT(res == ResultSuccess);
Service::PSC::Time::SteadyClockTimePoint automatic_correction_time_point{};
res = m_set_sys->GetUserSystemClockAutomaticCorrectionUpdatedTime(
automatic_correction_time_point);
ASSERT(res == ResultSuccess);
res = m_time_m->SetupStandardUserSystemClockCore(automatic_correction_time_point,
is_automatic_correction_enabled);
ASSERT(res == ResultSuccess);
res = m_time_m->SetupEphemeralNetworkSystemClockCore();
ASSERT(res == ResultSuccess);
res = SetupTimeZoneServiceCore();
ASSERT(res == ResultSuccess);
s64 rtc_time_s{};
res = m_steady_clock_resource.GetRtcTimeInSeconds(rtc_time_s);
ASSERT(res == ResultSuccess);
// TODO system report "launch"
// "rtc_reset" = m_steady_clock_resource.m_rtc_reset
// "rtc_value" = rtc_time_s
m_worker.StartThread();
m_file_timestamp_worker.m_initialized = true;
s64 system_clock_time{};
if (m_file_timestamp_worker.m_system_clock->GetCurrentTime(system_clock_time) ==
ResultSuccess) {
Service::PSC::Time::CalendarTime calendar_time{};
Service::PSC::Time::CalendarAdditionalInfo calendar_additional{};
if (m_file_timestamp_worker.m_time_zone->ToCalendarTimeWithMyRule(
calendar_time, calendar_additional, system_clock_time) == ResultSuccess) {
// TODO IFileSystemProxy::SetCurrentPosixTime(system_clock_time,
// calendar_additional.ut_offset)
}
}
}
Result TimeManager::SetupStandardSteadyClockCore() {
Common::UUID external_clock_source_id{};
auto res = m_set_sys->GetExternalSteadyClockSourceId(external_clock_source_id);
ASSERT(res == ResultSuccess);
s64 external_steady_clock_internal_offset_s{};
res = m_set_sys->GetExternalSteadyClockInternalOffset(external_steady_clock_internal_offset_s);
ASSERT(res == ResultSuccess);
auto one_second_ns{
std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::seconds(1)).count()};
s64 external_steady_clock_internal_offset_ns{external_steady_clock_internal_offset_s *
one_second_ns};
s32 standard_steady_clock_test_offset_m{
GetSettingsItemValue<s32>(m_set_sys, "time", "standard_steady_clock_test_offset_minutes")};
auto one_minute_ns{
std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::minutes(1)).count()};
s64 standard_steady_clock_test_offset_ns{standard_steady_clock_test_offset_m * one_minute_ns};
auto reset_detected = m_steady_clock_resource.GetResetDetected();
if (reset_detected) {
external_clock_source_id = {};
}
Common::UUID clock_source_id{};
m_steady_clock_resource.Initialize(&clock_source_id, &external_clock_source_id);
if (clock_source_id != external_clock_source_id) {
m_set_sys->SetExternalSteadyClockSourceId(clock_source_id);
}
res = m_time_m->SetupStandardSteadyClockCore(clock_source_id, m_steady_clock_resource.GetTime(),
external_steady_clock_internal_offset_ns,
standard_steady_clock_test_offset_ns,
reset_detected);
ASSERT(res == ResultSuccess);
R_SUCCEED();
}
Result TimeManager::SetupTimeZoneServiceCore() {
Service::PSC::Time::LocationName name{};
auto res = m_set_sys->GetDeviceTimeZoneLocationName(name);
ASSERT(res == ResultSuccess);
auto configured_zone = GetTimeZoneString(name);
if (configured_zone.name != name.name) {
m_set_sys->SetDeviceTimeZoneLocationName(configured_zone);
name = configured_zone;
std::shared_ptr<Service::PSC::Time::SystemClock> local_clock;
m_time_sm->GetStandardLocalSystemClock(local_clock);
Service::PSC::Time::SystemClockContext context{};
local_clock->GetSystemClockContext(context);
m_set_sys->SetDeviceTimeZoneLocationUpdatedTime(context.steady_time_point);
}
Service::PSC::Time::SteadyClockTimePoint time_point{};
res = m_set_sys->GetDeviceTimeZoneLocationUpdatedTime(time_point);
ASSERT(res == ResultSuccess);
auto location_count = GetTimeZoneCount();
Service::PSC::Time::RuleVersion rule_version{};
GetTimeZoneVersion(rule_version);
std::span<const u8> rule_buffer{};
size_t rule_size{};
res = GetTimeZoneRule(rule_buffer, rule_size, name);
ASSERT(res == ResultSuccess);
res = m_time_m->SetupTimeZoneServiceCore(name, time_point, rule_version, location_count,
rule_buffer);
ASSERT(res == ResultSuccess);
R_SUCCEED();
}
} // namespace Service::Glue::Time
