Leaked source code of windows server 2003
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//+-------------------------------------------------------------------------
//
// Microsoft Windows
//
// Copyright (C) Microsoft Corporation, 1999 - 1999
//
// File: msimodul.h
//
//--------------------------------------------------------------------------
// msimodl.h : header file for class CMsiModule
//
#ifndef __MSIMODL_H__
#define __MSIMODL_H__
#include <msi.h>
#include <msiquery.h>
class CMsiModule
{
typedef UINT (*EnumQualCompFncPtr)(LPTSTR, DWORD, LPTSTR, DWORD*, LPTSTR, DWORD*);
typedef UINT (*ProvideQualCompFncPtr)(LPCTSTR, LPCTSTR, DWORD, LPTSTR, DWORD*);
typedef UINT (*LocateCompFncPtr)(LPCTSTR, LPTSTR, DWORD*);
public:
CMsiModule(void) : hMsiDll(NULL), pfnEnumQualComp(NULL), pfnProvideQualComp(NULL)
{
hMsiDll = LoadLibrary(TEXT("msi.dll"));
if (hMsiDll != NULL)
{
#ifdef _UNICODE
pfnEnumQualComp = reinterpret_cast<EnumQualCompFncPtr>
(GetProcAddress(hMsiDll, "MsiEnumComponentQualifiersW"));
ASSERT(pfnEnumQualComp != NULL);
pfnProvideQualComp = reinterpret_cast<ProvideQualCompFncPtr>
(GetProcAddress(hMsiDll, "MsiProvideQualifiedComponentW"));
ASSERT(pfnProvideQualComp != NULL);
pfnLocateComp = reinterpret_cast<LocateCompFncPtr>
(GetProcAddress(hMsiDll, "MsiLocateComponentW"));
ASSERT(pfnLocateComp != NULL);
#else
pfnEnumQualComp = reinterpret_cast<EnumQualCompFncPtr>
(GetProcAddress(hMsiDll, "MsiEnumComponentQualifiersA"));
ASSERT(pfnEnumQualComp != NULL);
pfnProvideQualComp = reinterpret_cast<ProvideQualCompFncPtr>
(GetProcAddress(hMsiDll, "MsiProvideQualifiedComponentA"));
ASSERT(pfnProvideQualComp != NULL);
pfnLocateComp = reinterpret_cast<LocateCompFncPtr>
(GetProcAddress(hMsiDll, "MsiLocateComponentA"));
ASSERT(pfnLocateComp != NULL);
#endif // _UNICODE
}
}
~CMsiModule(void) { if (hMsiDll != NULL) FreeLibrary(hMsiDll); }
BOOL IsPresent(void) { return (hMsiDll != NULL); }
UINT EnumComponentQualifiers( LPTSTR szComponent, DWORD iIndex,
LPTSTR lpQualifierBuf, DWORD *pcchQualifierBuf,
LPTSTR lpApplicationDataBuf, DWORD *pcchApplicationDataBuf)
{
if (pfnEnumQualComp == NULL)
return ERROR_CALL_NOT_IMPLEMENTED;
return pfnEnumQualComp(szComponent, iIndex, lpQualifierBuf, pcchQualifierBuf,
lpApplicationDataBuf, pcchApplicationDataBuf);
}
UINT ProvideQualifiedComponent( LPCTSTR szComponent, LPCTSTR szQualifier, DWORD dwInstallMode,
LPTSTR lpPathBuf, DWORD *pcchPathBuf)
{
if (pfnProvideQualComp == NULL)
return ERROR_CALL_NOT_IMPLEMENTED;
return pfnProvideQualComp(szComponent, szQualifier, dwInstallMode, lpPathBuf, pcchPathBuf);
}
UINT LocateComponent( LPCTSTR szComponent, LPTSTR lpPathBuf, DWORD *pcchPathBuf)
{
if (pfnLocateComp == NULL)
return ERROR_CALL_NOT_IMPLEMENTED;
return pfnLocateComp(szComponent, lpPathBuf, pcchPathBuf);
}
private:
HMODULE hMsiDll;
EnumQualCompFncPtr pfnEnumQualComp;
ProvideQualCompFncPtr pfnProvideQualComp;
LocateCompFncPtr pfnLocateComp;
};
CMsiModule& MsiModule()
{
static CMsiModule MsiModuleInstance;
return MsiModuleInstance;
}
#endif // __MSIMODL_H__