mirror of
https://github.com/microsoft/PowerToys.git
synced 2026-02-24 12:11:09 +01:00
1783812f1f
Bug: If light switch is transitioning while the computer is offline, Light Switch will not clear the manual override at the boundary. Fix: Ensure the "Clear override" logic checks if we are at or past a boundary point.
548 lines
21 KiB
C++
548 lines
21 KiB
C++
#include <windows.h>
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#include <tchar.h>
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#include "ThemeScheduler.h"
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#include "ThemeHelper.h"
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#include <common/SettingsAPI/settings_objects.h>
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#include <common/SettingsAPI/settings_helpers.h>
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#include <stdio.h>
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#include <string>
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#include <LightSwitchSettings.h>
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#include <common/utils/gpo.h>
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#include <logger/logger_settings.h>
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#include <logger/logger.h>
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#include <utils/logger_helper.h>
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#include <LightSwitchServiceObserver.h>
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SERVICE_STATUS g_ServiceStatus = {};
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SERVICE_STATUS_HANDLE g_StatusHandle = nullptr;
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HANDLE g_ServiceStopEvent = nullptr;
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extern int g_lastUpdatedDay = -1;
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static ScheduleMode prevMode = ScheduleMode::Off;
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static std::wstring prevLat, prevLon;
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static int prevMinutes = -1;
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VOID WINAPI ServiceMain(DWORD argc, LPTSTR* argv);
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VOID WINAPI ServiceCtrlHandler(DWORD dwCtrl);
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DWORD WINAPI ServiceWorkerThread(LPVOID lpParam);
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// Entry point for the executable
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int _tmain(int argc, TCHAR* argv[])
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{
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DWORD parentPid = 0;
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bool debug = false;
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for (int i = 1; i < argc; ++i)
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{
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if (_tcscmp(argv[i], _T("--debug")) == 0)
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debug = true;
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else if (_tcscmp(argv[i], _T("--pid")) == 0 && i + 1 < argc)
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parentPid = _tstoi(argv[++i]);
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}
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// Try to connect to SCM
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wchar_t serviceName[] = L"LightSwitchService";
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SERVICE_TABLE_ENTRYW table[] = { { serviceName, ServiceMain }, { nullptr, nullptr } };
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LoggerHelpers::init_logger(L"LightSwitch", L"Service", LogSettings::lightSwitchLoggerName);
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if (!StartServiceCtrlDispatcherW(table))
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{
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DWORD err = GetLastError();
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if (err == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) // not launched by SCM
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{
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g_ServiceStopEvent = CreateEvent(nullptr, TRUE, FALSE, nullptr);
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HANDLE hThread = CreateThread(
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nullptr, 0, ServiceWorkerThread, reinterpret_cast<void*>(static_cast<ULONG_PTR>(parentPid)), 0, nullptr);
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// Wait so the process stays alive
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WaitForSingleObject(hThread, INFINITE);
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CloseHandle(hThread);
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CloseHandle(g_ServiceStopEvent);
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return 0;
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}
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return static_cast<int>(err);
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}
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return 0;
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}
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// Called when the service is launched by Windows
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VOID WINAPI ServiceMain(DWORD, LPTSTR*)
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{
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g_StatusHandle = RegisterServiceCtrlHandler(_T("LightSwitchService"), ServiceCtrlHandler);
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if (!g_StatusHandle)
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return;
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g_ServiceStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
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g_ServiceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
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g_ServiceStatus.dwCurrentState = SERVICE_START_PENDING;
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SetServiceStatus(g_StatusHandle, &g_ServiceStatus);
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g_ServiceStopEvent = CreateEvent(nullptr, TRUE, FALSE, nullptr);
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if (!g_ServiceStopEvent)
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{
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g_ServiceStatus.dwCurrentState = SERVICE_STOPPED;
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g_ServiceStatus.dwWin32ExitCode = GetLastError();
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SetServiceStatus(g_StatusHandle, &g_ServiceStatus);
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return;
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}
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SECURITY_ATTRIBUTES sa{ sizeof(sa) };
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sa.bInheritHandle = FALSE;
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sa.lpSecurityDescriptor = nullptr;
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g_ServiceStatus.dwCurrentState = SERVICE_RUNNING;
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SetServiceStatus(g_StatusHandle, &g_ServiceStatus);
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HANDLE hThread = CreateThread(nullptr, 0, ServiceWorkerThread, nullptr, 0, nullptr);
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WaitForSingleObject(hThread, INFINITE);
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CloseHandle(hThread);
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CloseHandle(g_ServiceStopEvent);
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g_ServiceStatus.dwCurrentState = SERVICE_STOPPED;
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g_ServiceStatus.dwWin32ExitCode = 0;
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SetServiceStatus(g_StatusHandle, &g_ServiceStatus);
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}
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VOID WINAPI ServiceCtrlHandler(DWORD dwCtrl)
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{
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switch (dwCtrl)
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{
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case SERVICE_CONTROL_STOP:
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if (g_ServiceStatus.dwCurrentState != SERVICE_RUNNING)
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break;
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g_ServiceStatus.dwCurrentState = SERVICE_STOP_PENDING;
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SetServiceStatus(g_StatusHandle, &g_ServiceStatus);
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// Signal the service to stop
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Logger::info(L"[LightSwitchService] Stop requested, signaling worker thread to exit.");
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SetEvent(g_ServiceStopEvent);
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break;
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default:
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break;
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}
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}
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static void update_sun_times(auto& settings)
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{
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double latitude = std::stod(settings.latitude);
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double longitude = std::stod(settings.longitude);
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SYSTEMTIME st;
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GetLocalTime(&st);
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SunTimes newTimes = CalculateSunriseSunset(latitude, longitude, st.wYear, st.wMonth, st.wDay);
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int newLightTime = newTimes.sunriseHour * 60 + newTimes.sunriseMinute;
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int newDarkTime = newTimes.sunsetHour * 60 + newTimes.sunsetMinute;
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try
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{
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auto values = PowerToysSettings::PowerToyValues::load_from_settings_file(L"LightSwitch");
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values.add_property(L"lightTime", newLightTime);
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values.add_property(L"darkTime", newDarkTime);
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values.save_to_settings_file();
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Logger::info(L"[LightSwitchService] Updated sun times and saved to config.");
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}
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catch (const std::exception& e)
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{
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std::wstring wmsg(e.what(), e.what() + strlen(e.what()));
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Logger::error(L"[LightSwitchService] Exception during sun time update: {}", wmsg);
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}
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}
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DWORD WINAPI ServiceWorkerThread(LPVOID lpParam)
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{
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DWORD parentPid = static_cast<DWORD>(reinterpret_cast<ULONG_PTR>(lpParam));
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HANDLE hParent = nullptr;
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if (parentPid)
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hParent = OpenProcess(SYNCHRONIZE, FALSE, parentPid);
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Logger::info(L"[LightSwitchService] Worker thread starting...");
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Logger::info(L"[LightSwitchService] Parent PID: {}", parentPid);
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LightSwitchSettings::instance().InitFileWatcher();
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LightSwitchServiceObserver observer({ SettingId::LightTime,
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SettingId::DarkTime,
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SettingId::ScheduleMode,
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SettingId::Sunrise_Offset,
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SettingId::Sunset_Offset });
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HANDLE hManualOverride = OpenEventW(SYNCHRONIZE | EVENT_MODIFY_STATE, FALSE, L"POWERTOYS_LIGHTSWITCH_MANUAL_OVERRIDE");
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auto applyTheme = [](int nowMinutes, int lightMinutes, int darkMinutes, const auto& settings) {
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bool isLightActive = (lightMinutes < darkMinutes) ? (nowMinutes >= lightMinutes && nowMinutes < darkMinutes) : (nowMinutes >= lightMinutes || nowMinutes < darkMinutes);
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bool isSystemCurrentlyLight = GetCurrentSystemTheme();
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bool isAppsCurrentlyLight = GetCurrentAppsTheme();
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if (isLightActive)
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{
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if (settings.changeSystem && !isSystemCurrentlyLight)
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{
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SetSystemTheme(true);
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Logger::info(L"[LightSwitchService] Changing system theme to light mode.");
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}
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if (settings.changeApps && !isAppsCurrentlyLight)
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{
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SetAppsTheme(true);
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Logger::info(L"[LightSwitchService] Changing apps theme to light mode.");
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}
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}
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else
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{
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if (settings.changeSystem && isSystemCurrentlyLight)
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{
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SetSystemTheme(false);
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Logger::info(L"[LightSwitchService] Changing system theme to dark mode.");
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}
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if (settings.changeApps && isAppsCurrentlyLight)
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{
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SetAppsTheme(false);
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Logger::info(L"[LightSwitchService] Changing apps theme to dark mode.");
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}
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}
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};
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LightSwitchSettings::instance().LoadSettings();
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auto& settings = LightSwitchSettings::instance().settings();
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SYSTEMTIME st;
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GetLocalTime(&st);
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int nowMinutes = st.wHour * 60 + st.wMinute;
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if (settings.scheduleMode != ScheduleMode::Off)
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{
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applyTheme(nowMinutes,
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settings.lightTime + settings.sunrise_offset,
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settings.darkTime + settings.sunset_offset,
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settings);
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Logger::trace(L"[LightSwitchService] Initialized g_lastUpdatedDay = {}", g_lastUpdatedDay);
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}
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else
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{
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Logger::info(L"[LightSwitchService] Schedule mode is OFF - ticker suspended, waiting for manual action or mode change.");
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}
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g_lastUpdatedDay = st.wDay;
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ULONGLONG lastSettingsReload = 0;
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for (;;)
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{
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HANDLE waits[2] = { g_ServiceStopEvent, hParent };
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DWORD count = hParent ? 2 : 1;
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bool skipRest = false;
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const auto& settings = LightSwitchSettings::instance().settings();
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bool scheduleJustEnabled = (prevMode == ScheduleMode::Off && settings.scheduleMode != ScheduleMode::Off);
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prevMode = settings.scheduleMode;
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// ─── Handle "Schedule Off" Mode ─────────────────────────────────────────────
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if (settings.scheduleMode == ScheduleMode::Off)
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{
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Logger::info(L"[LightSwitchService] Schedule mode OFF - suspending scheduler but keeping service alive.");
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if (!hManualOverride)
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hManualOverride = OpenEventW(SYNCHRONIZE | EVENT_MODIFY_STATE, FALSE, L"POWERTOYS_LIGHTSWITCH_MANUAL_OVERRIDE");
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HANDLE waitsOff[4];
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DWORD countOff = 0;
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waitsOff[countOff++] = g_ServiceStopEvent;
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if (hParent)
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waitsOff[countOff++] = hParent;
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if (hManualOverride)
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waitsOff[countOff++] = hManualOverride;
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waitsOff[countOff++] = LightSwitchSettings::instance().GetSettingsChangedEvent();
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for (;;)
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{
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DWORD wait = WaitForMultipleObjects(countOff, waitsOff, FALSE, INFINITE);
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if (wait == WAIT_OBJECT_0)
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{
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Logger::info(L"[LightSwitchService] Stop event triggered - exiting worker loop.");
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goto cleanup;
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}
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if (hParent && wait == WAIT_OBJECT_0 + 1)
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{
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Logger::info(L"[LightSwitchService] Parent exited - stopping service.");
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goto cleanup;
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}
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if (wait == WAIT_OBJECT_0 + (hParent ? 2 : 1))
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{
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Logger::info(L"[LightSwitchService] Manual override received while schedule OFF.");
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ResetEvent(hManualOverride);
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continue;
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}
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if (wait == WAIT_OBJECT_0 + (hParent ? 3 : 2))
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{
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Logger::trace(L"[LightSwitchService] Settings change event triggered, reloading settings...");
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ResetEvent(LightSwitchSettings::instance().GetSettingsChangedEvent());
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LightSwitchSettings::instance().LoadSettings();
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const auto& newSettings = LightSwitchSettings::instance().settings();
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lastSettingsReload = GetTickCount64();
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if (newSettings.scheduleMode != ScheduleMode::Off)
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{
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Logger::info(L"[LightSwitchService] Schedule re-enabled, resuming normal loop.");
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break;
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}
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}
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}
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continue;
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}
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// ─── Normal Schedule Loop ───────────────────────────────────────────────────
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ULONGLONG nowTick = GetTickCount64();
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bool recentSettingsReload = (nowTick - lastSettingsReload < 5000);
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if (g_lastUpdatedDay != -1)
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{
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bool manualOverrideActive = (hManualOverride && WaitForSingleObject(hManualOverride, 0) == WAIT_OBJECT_0);
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if (settings.scheduleMode != ScheduleMode::Off && !recentSettingsReload && !scheduleJustEnabled)
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{
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Logger::debug(L"[LightSwitchService] Checking if manual override is active...");
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bool manualOverrideActive = (hManualOverride && WaitForSingleObject(hManualOverride, 0) == WAIT_OBJECT_0);
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Logger::debug(L"[LightSwitchService] Manual override active = {}", manualOverrideActive);
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if (!manualOverrideActive)
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{
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bool currentSystemTheme = GetCurrentSystemTheme();
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bool currentAppsTheme = GetCurrentAppsTheme();
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SYSTEMTIME st;
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GetLocalTime(&st);
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int nowMinutes = st.wHour * 60 + st.wMinute;
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bool shouldBeLight = (settings.lightTime < settings.darkTime) ? (nowMinutes >= settings.lightTime && nowMinutes < settings.darkTime) : (nowMinutes >= settings.lightTime || nowMinutes < settings.darkTime);
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Logger::debug(L"[LightSwitchService] shouldBeLight = {}", shouldBeLight);
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if ((settings.changeSystem && (currentSystemTheme != shouldBeLight)) ||
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(settings.changeApps && (currentAppsTheme != shouldBeLight)))
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{
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Logger::debug(L"[LightSwitchService] External theme change detected - enabling manual override");
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if (!hManualOverride)
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{
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hManualOverride = OpenEventW(SYNCHRONIZE | EVENT_MODIFY_STATE, FALSE, L"POWERTOYS_LIGHTSWITCH_MANUAL_OVERRIDE");
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if (!hManualOverride)
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hManualOverride = CreateEventW(nullptr, TRUE, FALSE, L"POWERTOYS_LIGHTSWITCH_MANUAL_OVERRIDE");
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}
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if (hManualOverride)
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{
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SetEvent(hManualOverride);
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Logger::info(L"[LightSwitchService] Detected manual theme change outside of LightSwitch. Triggering manual override.");
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skipRest = true;
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}
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}
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}
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}
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else
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{
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Logger::debug(L"[LightSwitchService] Skipping external-change detection (schedule off, recent reload, or just enabled).");
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}
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}
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// ─── Apply Schedule Logic ───────────────────────────────────────────────────
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if (!skipRest)
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{
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bool modeChangedToSunset = (prevMode != settings.scheduleMode &&
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settings.scheduleMode == ScheduleMode::SunsetToSunrise);
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bool coordsChanged = (prevLat != settings.latitude || prevLon != settings.longitude);
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if ((modeChangedToSunset || coordsChanged) && settings.scheduleMode == ScheduleMode::SunsetToSunrise)
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{
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Logger::info(L"[LightSwitchService] Mode or coordinates changed, recalculating sun times.");
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update_sun_times(settings);
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SYSTEMTIME st;
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GetLocalTime(&st);
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g_lastUpdatedDay = st.wDay;
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prevMode = settings.scheduleMode;
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prevLat = settings.latitude;
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prevLon = settings.longitude;
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}
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SYSTEMTIME st;
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GetLocalTime(&st);
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int nowMinutes = st.wHour * 60 + st.wMinute;
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if ((g_lastUpdatedDay != st.wDay) && (settings.scheduleMode == ScheduleMode::SunsetToSunrise))
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{
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update_sun_times(settings);
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g_lastUpdatedDay = st.wDay;
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prevMinutes = -1;
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Logger::info(L"[LightSwitchService] Recalculated sun times at new day boundary.");
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}
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LightSwitchSettings::instance().LoadSettings();
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const auto& currentSettings = LightSwitchSettings::instance().settings();
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wchar_t msg[160];
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swprintf_s(msg,
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L"[LightSwitchService] now=%02d:%02d | light=%02d:%02d | dark=%02d:%02d | mode=%d",
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st.wHour,
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st.wMinute,
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currentSettings.lightTime / 60,
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currentSettings.lightTime % 60,
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currentSettings.darkTime / 60,
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currentSettings.darkTime % 60,
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static_cast<int>(currentSettings.scheduleMode));
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Logger::info(msg);
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bool manualOverrideActive = false;
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if (hManualOverride)
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manualOverrideActive = (WaitForSingleObject(hManualOverride, 0) == WAIT_OBJECT_0);
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if (manualOverrideActive)
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{
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int lightBoundary = (currentSettings.lightTime + currentSettings.sunrise_offset) % 1440;
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int darkBoundary = (currentSettings.darkTime + currentSettings.sunset_offset) % 1440;
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bool crossedLight = false;
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bool crossedDark = false;
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if (prevMinutes != -1)
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{
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if (nowMinutes < prevMinutes)
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{
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crossedLight = (prevMinutes <= lightBoundary || nowMinutes >= lightBoundary);
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crossedDark = (prevMinutes <= darkBoundary || nowMinutes >= darkBoundary);
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}
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else
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{
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crossedLight = (prevMinutes < lightBoundary && nowMinutes >= lightBoundary);
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crossedDark = (prevMinutes < darkBoundary && nowMinutes >= darkBoundary);
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}
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}
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Logger::debug(L"[LightSwitchService] prevMinutes={} nowMinutes={} light={} dark={}",
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prevMinutes,
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nowMinutes,
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lightBoundary,
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darkBoundary);
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if (crossedLight || crossedDark)
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{
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ResetEvent(hManualOverride);
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Logger::info(L"[LightSwitchService] Manual override cleared after crossing schedule boundary.");
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}
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else
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{
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Logger::info(L"[LightSwitchService] Skipping schedule due to manual override");
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skipRest = true;
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}
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}
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if (!skipRest)
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applyTheme(nowMinutes,
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currentSettings.lightTime + currentSettings.sunrise_offset,
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currentSettings.darkTime + currentSettings.sunset_offset,
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currentSettings);
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}
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// ─── Wait For Next Minute Tick Or Stop Event ────────────────────────────────
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SYSTEMTIME st;
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GetLocalTime(&st);
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int msToNextMinute = (60 - st.wSecond) * 1000 - st.wMilliseconds;
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if (msToNextMinute < 50)
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msToNextMinute = 50;
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prevMinutes = nowMinutes;
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DWORD wait = WaitForMultipleObjects(count, waits, FALSE, msToNextMinute);
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if (wait == WAIT_OBJECT_0)
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{
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Logger::info(L"[LightSwitchService] Stop event triggered - exiting worker loop.");
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break;
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}
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if (hParent && wait == WAIT_OBJECT_0 + 1)
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{
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Logger::info(L"[LightSwitchService] Parent process exited - stopping service.");
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break;
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}
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}
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cleanup:
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if (hManualOverride)
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CloseHandle(hManualOverride);
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if (hParent)
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CloseHandle(hParent);
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return 0;
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}
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void ApplyThemeNow()
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{
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LightSwitchSettings::instance().LoadSettings();
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const auto& settings = LightSwitchSettings::instance().settings();
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SYSTEMTIME st;
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GetLocalTime(&st);
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int nowMinutes = st.wHour * 60 + st.wMinute;
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bool shouldBeLight = false;
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if (settings.lightTime < settings.darkTime)
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shouldBeLight = (nowMinutes >= settings.lightTime && nowMinutes < settings.darkTime);
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else
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shouldBeLight = (nowMinutes >= settings.lightTime || nowMinutes < settings.darkTime);
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bool isSystemCurrentlyLight = GetCurrentSystemTheme();
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bool isAppsCurrentlyLight = GetCurrentAppsTheme();
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Logger::info(L"[LightSwitchService] Applying (if needed) theme immediately due to schedule change.");
|
|
|
|
if (shouldBeLight)
|
|
{
|
|
if (settings.changeSystem && !isSystemCurrentlyLight)
|
|
{
|
|
SetSystemTheme(true);
|
|
Logger::info(L"[LightSwitchService] Changing system theme to light mode.");
|
|
}
|
|
if (settings.changeApps && !isAppsCurrentlyLight)
|
|
{
|
|
SetAppsTheme(true);
|
|
Logger::info(L"[LightSwitchService] Changing apps theme to light mode.");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (settings.changeSystem && isSystemCurrentlyLight)
|
|
{
|
|
SetSystemTheme(false);
|
|
Logger::info(L"[LightSwitchService] Changing system theme to dark mode.");
|
|
}
|
|
if (settings.changeApps && isAppsCurrentlyLight)
|
|
{
|
|
SetAppsTheme(false);
|
|
Logger::info(L"[LightSwitchService] Changing apps theme to dark mode.");
|
|
}
|
|
}
|
|
}
|
|
|
|
int APIENTRY wWinMain(HINSTANCE, HINSTANCE, PWSTR, int)
|
|
{
|
|
if (powertoys_gpo::getConfiguredLightSwitchEnabledValue() == powertoys_gpo::gpo_rule_configured_disabled)
|
|
{
|
|
wchar_t msg[160];
|
|
swprintf_s(
|
|
msg,
|
|
L"Tried to start with a GPO policy setting the utility to always be disabled. Please contact your systems administrator.");
|
|
Logger::info(msg);
|
|
return 0;
|
|
}
|
|
|
|
int argc = 0;
|
|
LPWSTR* argv = CommandLineToArgvW(GetCommandLineW(), &argc);
|
|
int rc = _tmain(argc, argv); // reuse your existing logic
|
|
LocalFree(argv);
|
|
return rc;
|
|
} |