//*************************************************************
//
//  Copyright (c)1999 Microsoft Corporation, All Rights Reserved
//
//  gpdas.h
//
//  Module: Rsop Planning mode Provider
//
//  History:    11-Jul-99   MickH    Created
//
//*************************************************************

// Note: Proxy/Stub Information
//      To build a separate proxy/stub DLL,
//      run nmake -f RSOPPROVps.mk in the project directory.

#include "stdafx.h"
#include "resource.h"
#include <initguid.h>
#include "planprov.h"
#include <stdio.h>
#include "GPDAS.h"
#include "events.h"
#include "rsopdbg.h"


CServiceModule _Module;

BEGIN_OBJECT_MAP(ObjectMap)
OBJECT_ENTRY(CLSID_RsopPlanningModeProvider, RsopPlanningModeProvider)
END_OBJECT_MAP()


LPCTSTR FindOneOf(LPCTSTR p1, LPCTSTR p2)
{
    while (p1 != NULL && *p1 != NULL)
    {
        LPCTSTR p = p2;
        while (p != NULL && *p != NULL)
        {
            if (*p1 == *p)
                return CharNext(p1);
            p = CharNext(p);
        }
        p1 = CharNext(p1);
    }
    return NULL;
}

// Although some of these functions are big they are declared inline since they are only used once

inline HRESULT CServiceModule::RegisterServer(BOOL bRegTypeLib, BOOL bService)
{
    HRESULT hr = CoInitialize(NULL);
    if (FAILED(hr))
        return hr;

    // Remove any previous service since it may point to
    // the incorrect file
    Uninstall();

    // Add service entries
    UpdateRegistryFromResource(IDR_RSOPPROV, TRUE);

    // Adjust the AppID for Local Server or Service
    CRegKey keyAppID;
    LONG lRes = keyAppID.Open(HKEY_CLASSES_ROOT, _T("AppID"), KEY_WRITE);
    if (lRes != ERROR_SUCCESS)
        return lRes;

    CRegKey key;
    lRes = key.Open(keyAppID, _T("{6EBBFC6C-B721-4D10-9371-5D8E8C76D315}"), KEY_WRITE);
    if (lRes != ERROR_SUCCESS)
        return lRes;
    key.DeleteValue(_T("LocalService"));

    if (bService)
    {
        key.SetValue(_T("RSOPPROV"), _T("LocalService"));
        key.SetValue(_T("-Service"), _T("ServiceParameters"));
        // Create service
        Install();
    }

    // Add object entries
    hr = CComModule::RegisterServer(bRegTypeLib);

    CoUninitialize();
    return hr;
}

inline HRESULT CServiceModule::UnregisterServer()
{
    HRESULT hr = CoInitialize(NULL);
    if (FAILED(hr))
        return hr;

    // Remove service entries
    UpdateRegistryFromResource(IDR_RSOPPROV, FALSE);
    // Remove service
    Uninstall();
    // Remove object entries
    CComModule::UnregisterServer(TRUE);
    CoUninitialize();
    return S_OK;
}

inline void CServiceModule::Init(_ATL_OBJMAP_ENTRY* p, HINSTANCE h, UINT nServiceNameID, const GUID* plibid)
{
    CComModule::Init(p, h, plibid);

    m_bService = TRUE;

    LoadString(h, nServiceNameID, m_szServiceName, sizeof(m_szServiceName) / sizeof(TCHAR));

    // set up the initial service status
    m_hServiceStatus = NULL;
    m_status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
    m_status.dwCurrentState = SERVICE_STOPPED;
    m_status.dwControlsAccepted = SERVICE_ACCEPT_STOP;
    m_status.dwWin32ExitCode = 0;
    m_status.dwServiceSpecificExitCode = 0;
    m_status.dwCheckPoint = 0;
    m_status.dwWaitHint = 0;
}

LONG CServiceModule::Lock()
{
    LONG l = CComModule::Lock();
    IncrementServiceCount();
    return l;
}

LONG CServiceModule::Unlock()
{
    LONG l = CComModule::Unlock();
    DecrementServiceCount();
    return l;
}

LONG CServiceModule::IncrementServiceCount()
{
    LONG l;

   l = CoAddRefServerProcess();
   dbg.Msg( DEBUG_MESSAGE_VERBOSE, TEXT("CServiceModule::IncrementServiceCount. Ref count = %d."), l);
   return l;
}

LONG CServiceModule::DecrementServiceCount()
{
    LONG srvRefCount = CoReleaseServerProcess();
    
    dbg.Msg( DEBUG_MESSAGE_VERBOSE, TEXT("CServiceModule::DecrementServiceCount. Ref count = %d. "), srvRefCount);

    if (srvRefCount == 0) {
        PostThreadMessage(dwThreadID, WM_QUIT, 0, 0);
        dbg.Msg( DEBUG_MESSAGE_VERBOSE, TEXT("CServiceModule::Unlock Ref count came down to zero. Exitting."));
    }
    return srvRefCount;
}

BOOL CServiceModule::IsInstalled()
{
    BOOL bResult = FALSE;

    SC_HANDLE hSCM = ::OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);

    if (hSCM != NULL)
    {
        SC_HANDLE hService = ::OpenService(hSCM, m_szServiceName, SERVICE_QUERY_CONFIG);
        if (hService != NULL)
        {
            bResult = TRUE;
            ::CloseServiceHandle(hService);
        }
        ::CloseServiceHandle(hSCM);
    }
    return bResult;
}

inline BOOL CServiceModule::Install()
{
    if (IsInstalled())
        return TRUE;

    SC_HANDLE hSCM = ::OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
    if (hSCM == NULL)
    {
        MessageBox(NULL, _T("Couldn't open service manager"), m_szServiceName, MB_OK);
        return FALSE;
    }

    // Get the executable file path
    TCHAR szFilePath[_MAX_PATH];
    ::GetModuleFileName(NULL, szFilePath, _MAX_PATH);

    SC_HANDLE hService = ::CreateService(
        hSCM, m_szServiceName, m_szServiceName,
        SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS,
        SERVICE_DEMAND_START, SERVICE_ERROR_NORMAL,
        szFilePath, NULL, NULL, _T("RPCSS\0"), NULL, NULL);

    if (hService == NULL)
    {
        ::CloseServiceHandle(hSCM);
        MessageBox(NULL, _T("Couldn't create service"), m_szServiceName, MB_OK);
        return FALSE;
    }

    ::CloseServiceHandle(hService);
    ::CloseServiceHandle(hSCM);

    //
    // as part of the initialisation, install the eventlog as well.
    //

    HKEY hKey;
    DWORD dwTypes=7, dwDisp;
    
    if (RegCreateKeyEx(HKEY_LOCAL_MACHINE, TEXT("SYSTEM\\CurrentControlSet\\Services\\Eventlog\\Application\\gpdas"),
                     0, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hKey, &dwDisp) == ERROR_SUCCESS) {

        RegSetValueEx(hKey, TEXT("EventMessageFile"), 0, REG_EXPAND_SZ, (BYTE *)MessageResourceFile, (1+lstrlen(MessageResourceFile))*sizeof(TCHAR));
        RegSetValueEx(hKey, TEXT("TypesSupported"), 0, REG_DWORD, (BYTE *)&dwTypes, sizeof(dwTypes));
        
        RegCloseKey(hKey);                    
    }
    
    return TRUE;
}

inline BOOL CServiceModule::Uninstall()
{
    if (!IsInstalled())
        return TRUE;

    SC_HANDLE hSCM = ::OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);

    if (hSCM == NULL)
    {
        MessageBox(NULL, _T("Couldn't open service manager"), m_szServiceName, MB_OK);
        return FALSE;
    }

    SC_HANDLE hService = ::OpenService(hSCM, m_szServiceName, SERVICE_STOP | DELETE);

    if (hService == NULL)
    {
        ::CloseServiceHandle(hSCM);
        MessageBox(NULL, _T("Couldn't open service"), m_szServiceName, MB_OK);
        return FALSE;
    }
    SERVICE_STATUS status;
    ::ControlService(hService, SERVICE_CONTROL_STOP, &status);

    BOOL bDelete = ::DeleteService(hService);
    ::CloseServiceHandle(hService);
    ::CloseServiceHandle(hSCM);

    if (bDelete)
        return TRUE;

    MessageBox(NULL, _T("Service could not be deleted"), m_szServiceName, MB_OK);
    return FALSE;
}

///////////////////////////////////////////////////////////////////////////////////////
// Logging functions.
//
// This has static buffers and other restrictions. This is being used only in the service startup scenario
///////////////////////////////////////////////////////////////////////////////////////


void CServiceModule::LogEvent(LPCTSTR pFormat, ...)
{
/*    TCHAR    chMsg[256];
    HANDLE  hEventSource;
    LPTSTR  lpszStrings[1];
    va_list pArg;

    va_start(pArg, pFormat);
    _vstprintf(chMsg, pFormat, pArg);
    va_end(pArg);

    lpszStrings[0] = chMsg;

    if (m_bService)
    {
        CEvents ev(TRUE, EVENT_GPDAS_STARTUP);
        ev.AddArg(chMsg); ev.Report();
    }
    else
    {
        // As we are not running as a service, just write the error to the console.
        _putts(chMsg);
    }
*/
}

//////////////////////////////////////////////////////////////////////////////////////////////
// Service startup and registration
inline void CServiceModule::Start()
{
    SERVICE_TABLE_ENTRY st[] =
    {
        { m_szServiceName, _ServiceMain },
        { NULL, NULL }
    };
    if (m_bService && !::StartServiceCtrlDispatcher(st))
    {
        m_bService = FALSE;
    }
    if (m_bService == FALSE)
        Run();
}

inline void CServiceModule::ServiceMain(DWORD /* dwArgc */, LPTSTR* /* lpszArgv */)
{
    // Register the control request handler
    m_status.dwCurrentState = SERVICE_START_PENDING;
    m_hServiceStatus = RegisterServiceCtrlHandler(m_szServiceName, _Handler);
    if (m_hServiceStatus == NULL)
    {
        dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CServiceModule::ServiceMain failed to Register ServiceCtrlHandler with error %d."), GetLastError() );
        return;
    }
    SetServiceStatus(SERVICE_START_PENDING);

    m_status.dwWin32ExitCode = S_OK;
    m_status.dwCheckPoint = 0;
    m_status.dwWaitHint = 0;

    // When the Run function returns, the service has stopped.
    Run();

    SetServiceStatus(SERVICE_STOPPED);

}

inline void CServiceModule::Handler(DWORD dwOpcode)
{
    switch (dwOpcode)
    {
    case SERVICE_CONTROL_STOP:
        SetServiceStatus(SERVICE_STOP_PENDING);
        PostThreadMessage(dwThreadID, WM_QUIT, 0, 0);
        break;
    case SERVICE_CONTROL_PAUSE:
        break;
    case SERVICE_CONTROL_CONTINUE:
        break;
    case SERVICE_CONTROL_INTERROGATE:
        break;
    case SERVICE_CONTROL_SHUTDOWN:
        break;
    default:
        dbg.Msg( DEBUG_MESSAGE_VERBOSE, TEXT("CServiceModule::Handler Wrong opcode passed to handler %d."), dwOpcode );
    }
}

void WINAPI CServiceModule::_ServiceMain(DWORD dwArgc, LPTSTR* lpszArgv)
{
    _Module.ServiceMain(dwArgc, lpszArgv);
}
void WINAPI CServiceModule::_Handler(DWORD dwOpcode)
{
    _Module.Handler(dwOpcode);
}

void CServiceModule::SetServiceStatus(DWORD dwState)
{
    m_status.dwCurrentState = dwState;
    ::SetServiceStatus(m_hServiceStatus, &m_status);
}

void CServiceModule::Run()
{
    _Module.dwThreadID = GetCurrentThreadId();

//    HRESULT hr = CoInitialize(NULL);
//  If you are running on NT 4.0 or higher you can use the following call
//  instead to make the EXE free threaded.
//  This means that calls come in on a random RPC thread
    HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);

    _ASSERTE(SUCCEEDED(hr));

    // This provides a NULL DACL which will allow access to everyone.
    CSecurityDescriptor sd;
    sd.InitializeFromThreadToken();
    hr = CoInitializeSecurity(sd, -1, NULL, NULL,
        RPC_C_AUTHN_LEVEL_PKT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, NULL);
    _ASSERTE(SUCCEEDED(hr));

    hr = _Module.RegisterClassObjects(CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER, REGCLS_MULTIPLEUSE);
    _ASSERTE(SUCCEEDED(hr));

    if (m_bService)
        SetServiceStatus(SERVICE_RUNNING);

    MSG msg;
    while (GetMessage(&msg, 0, 0, 0))
        DispatchMessage(&msg);

    _Module.RevokeClassObjects();

    CoUninitialize();
}

/////////////////////////////////////////////////////////////////////////////
//
extern "C" int WINAPI _tWinMain(HINSTANCE hInstance,
    HINSTANCE /*hPrevInstance*/, LPTSTR lpCmdLine, int /*nShowCmd*/)
{
    lpCmdLine = GetCommandLine(); //this line necessary for _ATL_MIN_CRT
    _Module.Init(ObjectMap, hInstance, IDS_SERVICENAME, &LIBID_RSOPPROVLib);
    _Module.m_bService = TRUE;

    TCHAR szTokens[] = _T("-/");

    LPCTSTR lpszToken = FindOneOf(lpCmdLine, szTokens);
    while (lpszToken != NULL)
    {
        if (lstrcmpi(lpszToken, _T("UnregServer"))==0)
            return _Module.UnregisterServer();

        // Register as Local Server
        if (lstrcmpi(lpszToken, _T("RegServer"))==0)
            return _Module.RegisterServer(TRUE, FALSE);

        // Register as Service
        if (lstrcmpi(lpszToken, _T("Service"))==0)
            return _Module.RegisterServer(TRUE, TRUE);

        lpszToken = FindOneOf(lpszToken, szTokens);
    }

    // Are we Service or Local Server
    CRegKey keyAppID;
    LONG lRes = keyAppID.Open(HKEY_CLASSES_ROOT, _T("AppID"), KEY_READ);
    if (lRes != ERROR_SUCCESS)
        return lRes;

    CRegKey key;
    lRes = key.Open(keyAppID, _T("{6EBBFC6C-B721-4D10-9371-5D8E8C76D315}"), KEY_READ);
    if (lRes != ERROR_SUCCESS)
        return lRes;

    TCHAR szValue[_MAX_PATH];
    DWORD dwLen = _MAX_PATH;
    lRes = key.QueryValue(szValue, _T("LocalService"), &dwLen);

    _Module.m_bService = FALSE;
    if (lRes == ERROR_SUCCESS)
        _Module.m_bService = TRUE;

    _Module.Start();

    ShutdownEvents();    

    // When we get here, the service has been stopped
    return _Module.m_status.dwWin32ExitCode;
}