154 lines
4 KiB
C++
154 lines
4 KiB
C++
/*++
|
|
|
|
Copyright (c) 2001 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
ModemWizard.cpp
|
|
|
|
Abstract:
|
|
|
|
This shim hooks the RegQueryValueEx and passes in the app expected values
|
|
if the values are missing in the registry.
|
|
|
|
Notes:
|
|
|
|
This is an app specific shim.
|
|
|
|
History:
|
|
|
|
01/18/2001 a-leelat Created
|
|
|
|
--*/
|
|
|
|
#include "precomp.h"
|
|
#include <stdio.h>
|
|
|
|
IMPLEMENT_SHIM_BEGIN(ModemWizard)
|
|
#include "ShimHookMacro.h"
|
|
|
|
APIHOOK_ENUM_BEGIN
|
|
APIHOOK_ENUM_ENTRY(RegQueryValueExA)
|
|
APIHOOK_ENUM_END
|
|
|
|
LONG
|
|
APIHOOK(RegQueryValueExA)(
|
|
HKEY hKey,
|
|
LPSTR lpValueName,
|
|
LPDWORD lpReserved,
|
|
LPDWORD lpType,
|
|
LPBYTE lpData,
|
|
LPDWORD lpcbData
|
|
)
|
|
{
|
|
LONG lRet;
|
|
|
|
CSTRING_TRY
|
|
{
|
|
CString csValueName(lpValueName);
|
|
|
|
int iType = 0;
|
|
if (csValueName.Compare(L"Class") == 0)
|
|
iType = 1;
|
|
else if (csValueName.Compare(L"ClassGUID") == 0)
|
|
iType = 2;
|
|
else if (csValueName.Compare(L"Driver") == 0)
|
|
iType = 3;
|
|
|
|
const CHAR szGUID[] = "{4D36E96D-E325-11CE-BFC1-08002BE10318}";
|
|
DWORD dwRegType = REG_SZ;
|
|
|
|
//Save the passed in size of buffer
|
|
DWORD oldcbData = lpcbData ? *lpcbData : 0;
|
|
if (iType) {
|
|
|
|
//
|
|
// Query the registry to see if there is a service name for the subkey
|
|
// If there is one then check to see if the value returned is "Modem"
|
|
//
|
|
|
|
lRet = ORIGINAL_API(RegQueryValueExA)(hKey, "Service", lpReserved, &dwRegType, lpData, lpcbData);
|
|
if (lRet == ERROR_SUCCESS)
|
|
{
|
|
CString csData((LPCSTR)lpData);
|
|
if (csData.Compare(L"Modem") == 0)
|
|
{
|
|
switch (iType) {
|
|
case 1:
|
|
//
|
|
// We are being queried for a class
|
|
//
|
|
return lRet;
|
|
break;
|
|
case 2:
|
|
//
|
|
// We are being queried for a ClassGUID
|
|
// class GUID for modems is
|
|
// {4D36E96D-E325-11CE-BFC1-08002BE10318}
|
|
//
|
|
|
|
if (lpData) {
|
|
_tcscpy((LPSTR)lpData, szGUID);
|
|
*lpcbData = _tcslenBytes(szGUID);
|
|
return lRet;
|
|
}
|
|
break;
|
|
case 3:
|
|
//
|
|
// we are being queried for a Driver
|
|
// Check for DrvInst to append to the modemGUID
|
|
// its like {4D36E96D-E325-11CE-BFC1-08002BE10318}\0000
|
|
//
|
|
|
|
dwRegType = REG_DWORD;
|
|
if ((lRet = ORIGINAL_API(RegQueryValueExA)(hKey, "DrvInst", lpReserved,&dwRegType,lpData,lpcbData)) == ERROR_SUCCESS) {
|
|
|
|
CString csDrv;
|
|
csDrv.Format(L"%s\\%04d", szGUID, (int)(LOBYTE(LOWORD((DWORD)*lpData))));
|
|
|
|
LPSTR lpszData = (LPSTR)lpData;
|
|
|
|
_tcscpy(lpszData, csDrv.GetAnsi());
|
|
*lpcbData = _tcslenBytes(lpszData);
|
|
return lRet;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (lpcbData) {
|
|
*lpcbData = oldcbData;
|
|
}
|
|
}
|
|
CSTRING_CATCH
|
|
{
|
|
// Do nothing
|
|
}
|
|
|
|
lRet = ORIGINAL_API(RegQueryValueExA)(hKey, lpValueName, lpReserved,
|
|
lpType, lpData, lpcbData);
|
|
|
|
return lRet;
|
|
|
|
}
|
|
|
|
/*++
|
|
|
|
Register hooked functions
|
|
|
|
--*/
|
|
|
|
HOOK_BEGIN
|
|
|
|
APIHOOK_ENTRY(ADVAPI32.DLL, RegQueryValueExA);
|
|
|
|
HOOK_END
|
|
|
|
|
|
IMPLEMENT_SHIM_END
|
|
|