reactos/base/services/shsvcs/thmsvc.c

/*
 * COPYRIGHT:        See COPYING in the top level directory
 * PROJECT:          ReactOS kernel
 * FILE:             base/services/shsvcs/thmsvc.c
 * PURPOSE:          Themes service
 * PROGRAMMER:       Giannis Adamopoulos
 */

/* INCLUDES *****************************************************************/

#include <windows.h>
#include <wine/debug.h>

WINE_DEFAULT_DEBUG_CHANNEL(shsvcs);

/* GLOBALS ******************************************************************/

static WCHAR ServiceName[] = L"Themes";

SERVICE_STATUS_HANDLE ServiceStatusHandle;
SERVICE_STATUS ServiceStatus;


/* FUNCTIONS *****************************************************************/

HANDLE StartEvent, StopEvent;

static VOID
UpdateServiceStatus(DWORD dwState)
{
    ServiceStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
    ServiceStatus.dwCurrentState = dwState;

    if (dwState == SERVICE_RUNNING)
        ServiceStatus.dwControlsAccepted = SERVICE_ACCEPT_PAUSE_CONTINUE | SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
    else if (dwState == SERVICE_PAUSED)
        ServiceStatus.dwControlsAccepted = SERVICE_ACCEPT_PAUSE_CONTINUE;
    else
        ServiceStatus.dwControlsAccepted = 0;

    ServiceStatus.dwWin32ExitCode = 0;
    ServiceStatus.dwServiceSpecificExitCode = 0;
    ServiceStatus.dwCheckPoint = 0;

    if (dwState == SERVICE_START_PENDING ||
        dwState == SERVICE_STOP_PENDING ||
        dwState == SERVICE_PAUSE_PENDING ||
        dwState == SERVICE_CONTINUE_PENDING)
        ServiceStatus.dwWaitHint = 10000;
    else
        ServiceStatus.dwWaitHint = 0;

    SetServiceStatus(ServiceStatusHandle,
                     &ServiceStatus);
}


static DWORD WINAPI
ServiceControlHandler(DWORD dwControl,
                      DWORD dwEventType,
                      LPVOID lpEventData,
                      LPVOID lpContext)
{
    TRACE("ServiceControlHandler() called\n");

    switch (dwControl)
    {
        case SERVICE_CONTROL_STOP:
            TRACE("  SERVICE_CONTROL_STOP received\n");

            /* Signal the theme server in winlogon to remove theme hooks */
            ResetEvent(StartEvent);
            SetEvent(StopEvent);
            UpdateServiceStatus(SERVICE_STOPPED);
            return ERROR_SUCCESS;

        case SERVICE_CONTROL_PAUSE:
            TRACE("  SERVICE_CONTROL_PAUSE received\n");
            UpdateServiceStatus(SERVICE_PAUSED);
            return ERROR_SUCCESS;

        case SERVICE_CONTROL_CONTINUE:
            TRACE("  SERVICE_CONTROL_CONTINUE received\n");
            UpdateServiceStatus(SERVICE_RUNNING);
            return ERROR_SUCCESS;

        case SERVICE_CONTROL_INTERROGATE:
            TRACE("  SERVICE_CONTROL_INTERROGATE received\n");
            SetServiceStatus(ServiceStatusHandle,
                             &ServiceStatus);
            return ERROR_SUCCESS;

        case SERVICE_CONTROL_SHUTDOWN:
            TRACE("  SERVICE_CONTROL_SHUTDOWN received\n");
            UpdateServiceStatus(SERVICE_STOPPED);
            return ERROR_SUCCESS;

        default :
            TRACE("  Control %lu received\n");
            return ERROR_CALL_NOT_IMPLEMENTED;
    }
}

VOID
WINAPI
ThemeServiceMain(DWORD argc, LPTSTR *argv)
{
    UNREFERENCED_PARAMETER(argc);
    UNREFERENCED_PARAMETER(argv);

    ServiceStatusHandle = RegisterServiceCtrlHandlerExW(ServiceName,
                                                        ServiceControlHandler,
                                                        NULL);
    if (!ServiceStatusHandle)
    {
        ERR("RegisterServiceCtrlHandlerExW() failed! (Error %lu)\n", GetLastError());
        return;
    }

    StartEvent = CreateEventW(NULL, TRUE, FALSE, L"Global\\ThemeStartEvent");
    StopEvent = CreateEventW(NULL, TRUE, FALSE, L"Global\\ThemeStopEvent");

    UpdateServiceStatus(SERVICE_RUNNING);

    /* Signal the theme server in winlogon to install theme hooks */
    ResetEvent(StopEvent);
    SetEvent(StartEvent);
}

/* EOF */