539 lines
15 KiB
C++
539 lines
15 KiB
C++
//***************************************************************************
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//
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// MAINDLL.CPP
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//
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// Module: WMI Framework Instance provider
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//
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// Purpose: Contains DLL entry points. Also has code that controls
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// when the DLL can be unloaded by tracking the number of
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// objects and locks as well as routines that support
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// self registration.
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//
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// Copyright (C) 2001 Microsoft Corp.
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//
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//***************************************************************************
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#include "stdafx.h"
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#include <FWcommon.h>
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#include <objbase.h>
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#include <initguid.h>
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#include <tchar.h>
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#include "trace.h"
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#include "sdwmi.h"
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HINSTANCE g_hInstance = NULL;
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#ifdef UNICODE
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#pragma message("Its unicode")
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#else
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#pragma message("Its ansi")
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#endif
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//============
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// {BF258E47-A172-498d-971A-DA30A3301E94}
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DEFINE_GUID(CLSID_CIM_WIN32_TSSESSIONDIRECTORYCLUSTER,
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0xbf258e47, 0xa172, 0x498d, 0x97, 0x1a, 0xda, 0x30, 0xa3, 0x30, 0x1e, 0x94);
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// {f99a3c50-74fa-460a-8d75-db8ef2e3651d}
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DEFINE_GUID(CLSID_CIM_WIN32_TSSESSIONDIRECTORYSERVER,
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0xf99a3c50, 0x74fa, 0x460a, 0x8d, 0x75, 0xdb, 0x8e, 0xf2, 0xe3, 0x65, 0x1d);
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// {b745b87b-cc4e-4361-8d29-221d936c259c}
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DEFINE_GUID(CLSID_CIM_WIN32_TSSESSIONDIRECTORYSESSION,
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0xb745b87b, 0xcc4e, 0x4361, 0x8d, 0x29, 0x22, 0x1d, 0x93, 0x6c, 0x25, 0x9c);
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CRITICAL_SECTION g_critsect;
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CWin32_SessionDirectoryCluster* g_pSessionDirectoryClusterobj = NULL;
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CWin32_SessionDirectoryServer* g_pSessionDirectoryServerobj = NULL;
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CWin32_SessionDirectorySession* g_pSessionDirectorySessionobj = NULL;
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//Count number of objects and number of locks.
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long g_cLock=0;
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/***************************************************************************
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* SetKeyAndValue
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*
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* Purpose:
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* Private helper function for DllRegisterServer that creates
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* a key, sets a value, and closes that key.
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*
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* Parameters:
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* pszKey LPTSTR to the ame of the key
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* pszSubkey LPTSTR ro the name of a subkey
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* pszValue LPTSTR to the value to store
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*
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* Return Value:
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* BOOL TRUE if successful, FALSE otherwise.
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***************************************************************************/
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BOOL SetKeyAndValue (
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wchar_t *pszKey,
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wchar_t *pszSubkey,
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wchar_t *pszValueName,
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wchar_t *pszValue
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)
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{
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HKEY hKey;
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TCHAR szKey[MAX_PATH+1];
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if(lstrlen(pszKey) > MAX_PATH)
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{
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return FALSE;
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}
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lstrcpy(szKey, pszKey);
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if (NULL!=pszSubkey && (lstrlen(pszKey)+lstrlen(pszSubkey)+1) <= MAX_PATH )
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{
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lstrcat(szKey, TEXT("\\"));
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lstrcat(szKey, pszSubkey);
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}
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if (ERROR_SUCCESS!=RegCreateKeyEx(HKEY_LOCAL_MACHINE
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, szKey, 0, NULL, REG_OPTION_NON_VOLATILE
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, KEY_ALL_ACCESS, NULL, &hKey, NULL))
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return FALSE;
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if (NULL!=pszValue)
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{
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if (ERROR_SUCCESS != RegSetValueEx(hKey, (LPCTSTR)pszValueName, 0, REG_SZ, (BYTE *)(LPCTSTR)pszValue
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, (_tcslen(pszValue)+1)*sizeof(TCHAR)))
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return FALSE;
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}
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RegCloseKey(hKey);
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return TRUE;
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}
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//***************************************************************************
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//
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// Is4OrMore
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//
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// Returns true if win95 or any version of NT > 3.51
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//
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//***************************************************************************
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BOOL Is4OrMore(void)
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{
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OSVERSIONINFO os;
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os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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if(!GetVersionEx(&os))
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return FALSE; // should never happen
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return os.dwMajorVersion >= 4;
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}
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HRESULT RegisterServer (
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TCHAR *a_pName,
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REFGUID a_rguid
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)
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{
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WCHAR wcID[128];
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TCHAR szCLSID[128];
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TCHAR szModule[MAX_PATH];
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TCHAR * pName = TEXT("WBEM Framework Instance Provider");
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TCHAR * pModel;
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HKEY hKey1;
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GetModuleFileName(g_hInstance, szModule, MAX_PATH);
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// Normally we want to use "Both" as the threading model since
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// the DLL is free threaded, but NT 3.51 Ole doesnt work unless
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// the model is "Aparment"
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if(Is4OrMore())
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pModel = TEXT("Free") ;
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else
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pModel = TEXT("Free") ;
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// Create the path.
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StringFromGUID2(a_rguid, wcID, 128);
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lstrcpy(szCLSID, TEXT("SOFTWARE\\CLASSES\\CLSID\\"));
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lstrcat(szCLSID, wcID);
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#ifdef LOCALSERVER
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TCHAR szProviderCLSIDAppID[128];
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_tcscpy(szProviderCLSIDAppID,TEXT("SOFTWARE\\CLASSES\\APPID\\"));
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lstrcat(szProviderCLSIDAppID, wcID);
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if (FALSE ==SetKeyAndValue(szProviderCLSIDAppID, NULL, NULL, a_pName ))
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return SELFREG_E_CLASS;
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#endif
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// Create entries under CLSID
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RegCreateKey(HKEY_LOCAL_MACHINE, szCLSID, &hKey1);
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RegSetValueEx(hKey1, NULL, 0, REG_SZ, (BYTE *)a_pName, (lstrlen(a_pName)+1) *
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sizeof(TCHAR));
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#ifdef LOCALSERVER
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if (FALSE ==SetKeyAndValue(szCLSID, TEXT("LocalServer32"), NULL,szModule))
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return SELFREG_E_CLASS;
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if (FALSE ==SetKeyAndValue(szCLSID, TEXT("LocalServer32"),TEXT("ThreadingModel"), pModel))
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return SELFREG_E_CLASS;
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#else
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HKEY hKey2 ;
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RegCreateKey(hKey1, TEXT("InprocServer32"), &hKey2);
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RegSetValueEx(hKey2, NULL, 0, REG_SZ, (BYTE *)szModule,
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(lstrlen(szModule)+1) * sizeof(TCHAR));
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RegSetValueEx(hKey2, TEXT("ThreadingModel"), 0, REG_SZ,
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(BYTE *)pModel, (lstrlen(pModel)+1) * sizeof(TCHAR));
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CloseHandle(hKey2);
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#endif
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CloseHandle(hKey1);
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return S_OK;
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}
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HRESULT UnregisterServer (
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REFGUID a_rguid
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)
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{
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TCHAR szID[128];
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WCHAR wcID[128];
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TCHAR szCLSID[128];
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HKEY hKey;
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// Create the path using the CLSID
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StringFromGUID2( a_rguid, wcID, 128);
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lstrcpy(szCLSID, TEXT("SOFTWARE\\CLASSES\\CLSID\\"));
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lstrcat(szCLSID, wcID);
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DWORD dwRet ;
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#ifdef LOCALSERVER
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TCHAR szProviderCLSIDAppID[128];
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_tcscpy(szProviderCLSIDAppID,TEXT("SOFTWARE\\CLASSES\\APPID\\"));
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_tcscat(szProviderCLSIDAppID,szCLSID);
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//Delete entries under APPID
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DWORD hrStatus = RegDeleteKey(HKEY_CLASSES_ROOT, szProviderCLSIDAppID);
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TCHAR szTemp[128];
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_stprintf(szTemp, TEXT("%s\\%s"),szCLSID, TEXT("LocalServer32"));
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hrStatus = RegDeleteKey(HKEY_CLASSES_ROOT, szTemp);
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#else
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// First delete the InProcServer subkey.
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dwRet = RegOpenKey(HKEY_LOCAL_MACHINE, szCLSID, &hKey);
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if(dwRet == NO_ERROR)
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{
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RegDeleteKey(hKey, TEXT("InProcServer32") );
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CloseHandle(hKey);
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}
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#endif
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dwRet = RegOpenKey(HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\CLASSES\\CLSID"), &hKey);
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if(dwRet == NO_ERROR)
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{
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RegDeleteKey(hKey,szID);
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CloseHandle(hKey);
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}
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else
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{
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ERR((TB,"UnregisterServer ret 0x%x\n", dwRet));
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}
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return HRESULT_FROM_WIN32( dwRet );
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}
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//***************************************************************************
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//
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// DllGetClassObject
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//
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// Purpose: Called by Ole when some client wants a class factory. Return
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// one only if it is the sort of class this DLL supports.
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//
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//***************************************************************************
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STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, PPVOID ppv)
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{
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HRESULT hr = S_OK;
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CWbemGlueFactory *pObj;
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if ((CLSID_CIM_WIN32_TSSESSIONDIRECTORYCLUSTER == rclsid) ||
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(CLSID_CIM_WIN32_TSSESSIONDIRECTORYSERVER == rclsid) ||
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(CLSID_CIM_WIN32_TSSESSIONDIRECTORYSESSION == rclsid))
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{
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EnterCriticalSection(&g_critsect);
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try{
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pObj =new CWbemGlueFactory () ;
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if (NULL==pObj)
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{
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hr = E_OUTOFMEMORY;
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}
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else
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{
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hr=pObj->QueryInterface(riid, ppv);
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if (FAILED(hr))
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delete pObj;
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}
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if( SUCCEEDED(hr) )
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{
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// EnterCriticalSection prevents more than one threads from instantiating the global pointers to the objects.
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if( g_pSessionDirectoryClusterobj == NULL )
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{
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TRC2((TB, "DllMain DLL_PROCESS_ATTACH: CWin32_SessionDirectoryCluster object created"));
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g_pSessionDirectoryClusterobj = new CWin32_SessionDirectoryCluster( PROVIDER_NAME_Win32_WIN32_SESSIONDIRECTORYCLUSTER_Prov, L"root\\cimv2");
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}
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if( g_pSessionDirectoryServerobj == NULL )
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{
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TRC2((TB, "DllMain DLL_PROCESS_ATTACH: CWin32_SessionDirectoryServer object created"));
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g_pSessionDirectoryServerobj = new CWin32_SessionDirectoryServer( PROVIDER_NAME_Win32_WIN32_SESSIONDIRECTORYSERVER_Prov, L"root\\cimv2");
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}
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if( g_pSessionDirectorySessionobj == NULL )
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{
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TRC2((TB, "DllMain DLL_PROCESS_ATTACH: CWin32_SessionDirectorySession object created"));
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g_pSessionDirectorySessionobj = new CWin32_SessionDirectorySession( PROVIDER_NAME_Win32_WIN32_SESSIONDIRECTORYSESSION_Prov, L"root\\cimv2");
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}
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}
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}
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catch (...)
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{
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hr = E_OUTOFMEMORY;
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}
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LeaveCriticalSection(&g_critsect);
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}
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else
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{
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hr=E_FAIL;
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ERR((TB, "DllGetClassObject ret 0x%x\n" , hr));
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}
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return hr;
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}
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//***************************************************************************
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//
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// DllCanUnloadNow
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//
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// Purpose: Called periodically by Ole in order to determine if the
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// DLL can be freed.
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//
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// Return: S_OK if there are no objects in use and the class factory
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// isn't locked.
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//
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//***************************************************************************
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STDAPI DllCanUnloadNow(void)
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{
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SCODE sc;
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// It is OK to unload if there are no objects or locks on the
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// class factory and the framework is done with you.
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if ((0L==g_cLock) && CWbemProviderGlue::FrameworkLogoffDLL(L"TSSDWMI"))
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{
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// EnterCriticalSection prevents multiple threads from accessing the global pointers concurrently and
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// allows only one thread access to free the objects based on the condition that g_cLock count is zero
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// and FrameworkLogoffDLL is TRUE.
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EnterCriticalSection(&g_critsect);
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if( g_pSessionDirectoryClusterobj != NULL )
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{
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TRC2((TB, "DllMain DLL_PROCESS_DETACH: CWin32_SessionDirectoryCluster object deleted"));
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delete g_pSessionDirectoryClusterobj;
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g_pSessionDirectoryClusterobj = NULL;
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}
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if( g_pSessionDirectoryServerobj != NULL )
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{
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TRC2((TB, "DllMain DLL_PROCESS_DETACH: CWin32_SessionDirectoryServer object deleted"));
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delete g_pSessionDirectoryServerobj;
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g_pSessionDirectoryServerobj = NULL;
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}
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if( g_pSessionDirectorySessionobj != NULL )
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{
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TRC2((TB, "DllMain DLL_PROCESS_DETACH: CWin32_SessionDirectorySession object deleted"));
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delete g_pSessionDirectorySessionobj;
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g_pSessionDirectorySessionobj = NULL;
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}
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// LeaveCriticalSection releases the critical section once the thread has freed all objects.
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LeaveCriticalSection(&g_critsect);
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sc = S_OK;
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}
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else
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{
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sc = S_FALSE;
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// ERR((TB, "DllCanUnloadNow ret 0x%x\n" , sc));
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}
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return sc;
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}
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//***************************************************************************
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//
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// DllRegisterServer
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//
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// Purpose: Called during setup or by regsvr32.
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//
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// Return: NOERROR if registration successful, error otherwise.
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//***************************************************************************
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STDAPI DllRegisterServer(void)
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{
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HRESULT hrStatus;
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hrStatus = RegisterServer( TEXT("WBEM WIN32_TSSESSIONDIRECTORYCLUSTER Provider"), CLSID_CIM_WIN32_TSSESSIONDIRECTORYCLUSTER ) ;
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if( SUCCEEDED( hrStatus ) )
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{
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TRC2((TB,"RegisterServer Win32_WIN32_TSSESSIONDIRECTORYCLUSTER: succeeded"));
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}
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hrStatus = RegisterServer( TEXT("WBEM WIN32_TSSESSIONDIRECTORYSERVER Provider"), CLSID_CIM_WIN32_TSSESSIONDIRECTORYSERVER ) ;
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if( SUCCEEDED( hrStatus ) )
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{
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TRC2((TB,"RegisterServer Win32_WIN32_TSSESSIONDIRECTORYSERVER: succeeded"));
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}
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hrStatus = RegisterServer( TEXT("WBEM WIN32_TSSESSIONDIRECTORYSESSION Provider"), CLSID_CIM_WIN32_TSSESSIONDIRECTORYSESSION ) ;
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if( SUCCEEDED( hrStatus ) )
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{
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TRC2((TB,"RegisterServer Win32_WIN32_TSSESSIONDIRECTORYSESSION: succeeded"));
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}
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return hrStatus;
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}
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//***************************************************************************
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//
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// DllUnregisterServer
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//
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// Purpose: Called when it is time to remove the registry entries.
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//
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// Return: NOERROR if registration successful, error otherwise.
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//***************************************************************************
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STDAPI DllUnregisterServer(void)
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{
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UnregisterServer( CLSID_CIM_WIN32_TSSESSIONDIRECTORYCLUSTER );
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UnregisterServer( CLSID_CIM_WIN32_TSSESSIONDIRECTORYSERVER );
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UnregisterServer( CLSID_CIM_WIN32_TSSESSIONDIRECTORYSESSION );
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return S_OK;
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}
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//***************************************************************************
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//
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// DllMain
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//
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// Purpose: Called by the operating system when processes and threads are
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// initialized and terminated, or upon calls to the LoadLibrary
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// and FreeLibrary functions
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//
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// Return: TRUE if load was successful, else FALSE
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//***************************************************************************
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BOOL APIENTRY DllMain ( HINSTANCE hInstDLL, // handle to dll module
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DWORD fdwReason, // reason for calling function
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LPVOID lpReserved ) // reserved
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{
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BOOL bRet = TRUE;
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// Perform actions based on the reason for calling.
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if( DLL_PROCESS_ATTACH == fdwReason )
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{
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DisableThreadLibraryCalls(hInstDLL);
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// CriticalSection object is initialized on Thread attach.
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__try
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{
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InitializeCriticalSection(&g_critsect);
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}
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__except (EXCEPTION_EXECUTE_HANDLER)
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{
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return FALSE;
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}
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g_hInstance = hInstDLL ;
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bRet = CWbemProviderGlue :: FrameworkLoginDLL ( L"TSSDWMI" ) ;
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}
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else if( DLL_PROCESS_DETACH == fdwReason )
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{
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// CriticalSection object is deleted
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DeleteCriticalSection(&g_critsect);
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}
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return bRet; // Status of DLL_PROCESS_ATTACH.
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}
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