Source code of Windows XP (NT5)
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//***************************************************************************
//
// MAINDLL.CPP
//
// Module: WBEM VIEW PROVIDER
//
// Purpose: Contains the global dll functions
//
// Copyright (c) 1998-2001 Microsoft Corporation, All Rights Reserved
//
//***************************************************************************
#include "precomp.h"
#include <provtempl.h>
#include <provmt.h>
#include <typeinfo.h>
#include <process.h>
#include <objbase.h>
#include <olectl.h>
#include <dsgetdc.h>
#include <lmcons.h>
#include <initguid.h>
#ifndef INITGUID
#define INITGUID
#endif
#include <windows.h>
#include <stdio.h>
#include <provexpt.h>
#include <tchar.h>
#include <wbemidl.h>
#include <provcoll.h>
#include <provcont.h>
#include <provevt.h>
#include <provthrd.h>
#include <provlog.h>
#include <instpath.h>
#include <genlex.h>
#include <sql_1.h>
#include <objpath.h>
#include <vpdefs.h>
#include <vpcfac.h>
#include <vpquals.h>
#include <vpserv.h>
#include <vptasks.h>
//OK we need these globals
HINSTANCE g_hInst = NULL;
ProvDebugLog* CViewProvServ::sm_debugLog = NULL;
IUnsecuredApartment* CViewProvServ::sm_UnsecApp = NULL;
CRITICAL_SECTION g_CriticalSection;
//***************************************************************************
//
// LibMain32
//
// Purpose: Entry point for DLL. Good place for initialization.
// Return: TRUE if OK.
//***************************************************************************
BOOL APIENTRY DllMain (
HINSTANCE hInstance,
ULONG ulReason ,
LPVOID pvReserved
)
{
BOOL status = TRUE ;
if ( DLL_PROCESS_DETACH == ulReason )
{
//ProvThreadObject :: ProcessDetach (TRUE) ;
DeleteCriticalSection(&g_CriticalSection);
}
else if ( DLL_PROCESS_ATTACH == ulReason )
{
g_hInst=hInstance;
//ProvThreadObject :: ProcessAttach () ;
InitializeCriticalSection(&g_CriticalSection);
DisableThreadLibraryCalls(hInstance);
}
else if ( DLL_THREAD_DETACH == ulReason )
{
}
else if ( DLL_THREAD_ATTACH == ulReason )
{
}
return status;
}
//***************************************************************************
//
// DllGetClassObject
//
// Purpose: Called by Ole when some client wants a a class factory. Return
// one only if it is the sort of class this DLL supports.
//
//***************************************************************************
STDAPI DllGetClassObject (
REFCLSID rclsid ,
REFIID riid,
void **ppv
)
{
HRESULT status = S_OK ;
SetStructuredExceptionHandler seh;
try
{
EnterCriticalSection(&g_CriticalSection);
if (CViewProvServ::sm_debugLog == NULL)
{
ProvDebugLog::Startup();
CViewProvServ::sm_debugLog = new ProvDebugLog(_T("ViewProvider"));;
}
if ( rclsid == CLSID_CViewProviderClassFactory )
{
CViewProvClassFactory *lpunk = new CViewProvClassFactory;
if ( lpunk == NULL )
{
status = E_OUTOFMEMORY ;
}
else
{
status = lpunk->QueryInterface ( riid , ppv ) ;
if ( FAILED ( status ) )
{
delete lpunk ;
}
}
}
else
{
status = CLASS_E_CLASSNOTAVAILABLE ;
}
LeaveCriticalSection(&g_CriticalSection);
}
catch(Structured_Exception e_SE)
{
status = E_UNEXPECTED;
}
catch(Heap_Exception e_HE)
{
status = E_OUTOFMEMORY;
}
catch(...)
{
status = E_UNEXPECTED;
}
return status ;
}
//***************************************************************************
//
// DllCanUnloadNow
//
// Purpose: Called periodically by Ole in order to determine if the
// DLL can be freed.//
// Return: TRUE if there are no objects in use and the class factory
// isn't locked.
//***************************************************************************
STDAPI DllCanUnloadNow ()
{
/*
* Place code in critical section
*/
BOOL unload = FALSE;
SetStructuredExceptionHandler seh;
try
{
EnterCriticalSection(&g_CriticalSection);
unload = (0 == CViewProvClassFactory :: locksInProgress)
&& (0 == CViewProvClassFactory :: objectsInProgress);
if (unload)
{
if (CViewProvServ::sm_debugLog != NULL)
{
delete CViewProvServ::sm_debugLog;
CViewProvServ::sm_debugLog = NULL;
ProvDebugLog::Closedown();
}
if (NULL != CViewProvServ::sm_UnsecApp)
{
CViewProvServ::sm_UnsecApp->Release();
CViewProvServ::sm_UnsecApp = NULL;
}
}
LeaveCriticalSection(&g_CriticalSection);
}
catch(Structured_Exception e_SE)
{
unload = FALSE;
}
catch(Heap_Exception e_HE)
{
unload = FALSE;
}
catch(...)
{
unload = FALSE;
}
return unload ? ResultFromScode ( S_OK ) : ResultFromScode ( S_FALSE ) ;
}
//Strings used during self registeration
#define REG_FORMAT2_STR _T("%s%s")
#define REG_FORMAT3_STR _T("%s%s\\%s")
#define VER_IND_STR _T("VersionIndependentProgID")
#define NOT_INTERT_STR _T("NotInsertable")
#define INPROC32_STR _T("InprocServer32")
#define PROGID_STR _T("ProgID")
#define THREADING_MODULE_STR _T("ThreadingModel")
#define APARTMENT_STR _T("Both")
#define CLSID_STR _T("CLSID\\")
#define PROVIDER_NAME_STR _T("Microsoft WBEM View Provider")
#define PROVIDER_STR _T("WBEM.VIEW.PROVIDER")
#define PROVIDER_CVER_STR _T("WBEM.VIEW.PROVIDER\\CurVer")
#define PROVIDER_CLSID_STR _T("WBEM.VIEW.PROVIDER\\CLSID")
#define PROVIDER_VER_CLSID_STR _T("WBEM.VIEW.PROVIDER.0\\CLSID")
#define PROVIDER_VER_STR _T("WBEM.VIEW.PROVIDER.0")
/***************************************************************************
* SetKeyAndValue
*
* Purpose:
* Private helper function for DllRegisterServer that creates
* a key, sets a value, and closes that key.
*
* Parameters:
* pszKey LPTSTR to the ame of the key
* pszSubkey LPTSTR ro the name of a subkey
* pszValue LPTSTR to the value to store
*
* Return Value:
* BOOL TRUE if successful, FALSE otherwise.
***************************************************************************/
BOOL SetKeyAndValue(TCHAR* pszKey, TCHAR* pszSubkey, TCHAR* pszValueName, TCHAR* pszValue)
{
HKEY hKey;
TCHAR szKey[256];
_tcscpy(szKey, HKEYCLASSES);
_tcscat(szKey, pszKey);
if (NULL!=pszSubkey)
{
_tcscat(szKey, _T("\\"));
_tcscat(szKey, pszSubkey);
}
if (ERROR_SUCCESS!=RegCreateKeyEx(HKEY_LOCAL_MACHINE
, szKey, 0, NULL, REG_OPTION_NON_VOLATILE
, KEY_ALL_ACCESS, NULL, &hKey, NULL))
return FALSE;
if (NULL!=pszValue)
{
if (ERROR_SUCCESS != RegSetValueEx(hKey, pszValueName, 0, REG_SZ, (BYTE *)pszValue
, (_tcslen(pszValue)+1)*sizeof(TCHAR)))
return FALSE;
}
RegCloseKey(hKey);
return TRUE;
}
/***************************************************************************
* DllRegisterServer
*
* Purpose:
* Instructs the server to create its own registry entries
*
* Parameters:
* None
*
* Return Value:
* HRESULT NOERROR if registration successful, error
* otherwise.
***************************************************************************/
STDAPI DllRegisterServer()
{
SetStructuredExceptionHandler seh;
try
{
TCHAR szModule[MAX_PATH + 1];
GetModuleFileName(g_hInst,(TCHAR*)szModule, MAX_PATH + 1);
TCHAR szProviderClassID[128];
TCHAR szProviderCLSIDClassID[128];
#ifndef UNICODE
wchar_t t_strGUID[128];
if (0 == StringFromGUID2(CLSID_CViewProviderClassFactory, t_strGUID, 128))
{
return SELFREG_E_CLASS;
}
if (0 == WideCharToMultiByte(CP_ACP,
0,
t_strGUID,
-1,
szProviderClassID,
128,
NULL,
NULL))
{
return SELFREG_E_CLASS;
}
#else
if (0 == StringFromGUID2(CLSID_CViewProviderClassFactory, szProviderClassID, 128))
{
return SELFREG_E_CLASS;
}
#endif
_tcscpy(szProviderCLSIDClassID,CLSID_STR);
_tcscat(szProviderCLSIDClassID,szProviderClassID);
//Create entries under CLSID
if (FALSE ==SetKeyAndValue(szProviderCLSIDClassID, NULL, NULL, PROVIDER_NAME_STR))
return SELFREG_E_CLASS;
if (FALSE ==SetKeyAndValue(szProviderCLSIDClassID, PROGID_STR, NULL, PROVIDER_VER_STR))
return SELFREG_E_CLASS;
if (FALSE ==SetKeyAndValue(szProviderCLSIDClassID, VER_IND_STR, NULL, PROVIDER_STR))
return SELFREG_E_CLASS;
if (FALSE ==SetKeyAndValue(szProviderCLSIDClassID, NOT_INTERT_STR, NULL, NULL))
return SELFREG_E_CLASS;
if (FALSE ==SetKeyAndValue(szProviderCLSIDClassID, INPROC32_STR, NULL,szModule))
return SELFREG_E_CLASS;
if (FALSE ==SetKeyAndValue(szProviderCLSIDClassID, INPROC32_STR,THREADING_MODULE_STR, APARTMENT_STR))
return SELFREG_E_CLASS;
}
catch(Structured_Exception e_SE)
{
return E_UNEXPECTED;
}
catch(Heap_Exception e_HE)
{
return E_OUTOFMEMORY;
}
catch(...)
{
return E_UNEXPECTED;
}
return S_OK;
}
/***************************************************************************
* DllUnregisterServer
*
* Purpose:
* Instructs the server to remove its own registry entries
*
* Parameters:
* None
*
* Return Value:
* HRESULT NOERROR if registration successful, error
* otherwise.
***************************************************************************/
STDAPI DllUnregisterServer(void)
{
HRESULT hr = S_OK;
SetStructuredExceptionHandler seh;
try
{
TCHAR szTemp[128];
TCHAR szProviderClassID[128];
TCHAR szProviderCLSIDClassID[128];
#ifndef UNICODE
wchar_t t_strGUID[128];
if (0 == StringFromGUID2(CLSID_CViewProviderClassFactory, t_strGUID, 128))
{
return SELFREG_E_CLASS;
}
if (0 == WideCharToMultiByte(CP_ACP,
0,
t_strGUID,
-1,
szProviderClassID,
128,
NULL,
NULL))
{
return SELFREG_E_CLASS;
}
#else
if (0 == StringFromGUID2(CLSID_CViewProviderClassFactory, szProviderClassID, 128))
{
return SELFREG_E_CLASS;
}
#endif
_tcscpy(szProviderCLSIDClassID,CLSID_STR);
_tcscat(szProviderCLSIDClassID,szProviderClassID);
//Delete entries under CLSID
_stprintf(szTemp, REG_FORMAT3_STR, HKEYCLASSES, szProviderCLSIDClassID, PROGID_STR);
if (ERROR_SUCCESS != RegDeleteKey(HKEY_LOCAL_MACHINE, szTemp))
{
hr = SELFREG_E_CLASS;
}
_stprintf(szTemp, REG_FORMAT3_STR, HKEYCLASSES, szProviderCLSIDClassID, VER_IND_STR);
if (ERROR_SUCCESS != RegDeleteKey(HKEY_LOCAL_MACHINE, szTemp))
{
hr = SELFREG_E_CLASS;
}
_stprintf(szTemp, REG_FORMAT3_STR, HKEYCLASSES, szProviderCLSIDClassID, NOT_INTERT_STR);
if (ERROR_SUCCESS != RegDeleteKey(HKEY_LOCAL_MACHINE, szTemp))
{
hr = SELFREG_E_CLASS;
}
_stprintf(szTemp, REG_FORMAT3_STR, HKEYCLASSES, szProviderCLSIDClassID, INPROC32_STR);
if (ERROR_SUCCESS != RegDeleteKey(HKEY_LOCAL_MACHINE, szTemp))
{
hr = SELFREG_E_CLASS;
}
_stprintf(szTemp, REG_FORMAT2_STR, HKEYCLASSES, szProviderCLSIDClassID);
if (ERROR_SUCCESS != RegDeleteKey(HKEY_LOCAL_MACHINE, szTemp))
{
hr = SELFREG_E_CLASS;
}
}
catch(Structured_Exception e_SE)
{
hr = E_UNEXPECTED;
}
catch(Heap_Exception e_HE)
{
hr = E_OUTOFMEMORY;
}
catch(...)
{
hr = E_UNEXPECTED;
}
return hr;
}