You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
105 lines
2.0 KiB
105 lines
2.0 KiB
/*++
|
|
|
|
Copyright (c) 2001 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
AOLSystemInfo.cpp
|
|
|
|
Abstract:
|
|
AOL looks to enumerate the registry key
|
|
HKLM\System\CurrentControlSet\Control\Class
|
|
but passes a fixed size buffer. The number
|
|
of keys under 'Class' have changed in XP
|
|
causing unexpected behaviour.
|
|
|
|
Notes:
|
|
|
|
This is specific to this app.
|
|
|
|
History:
|
|
|
|
05/17/2001 prashkud Created
|
|
|
|
--*/
|
|
|
|
#include "precomp.h"
|
|
|
|
IMPLEMENT_SHIM_BEGIN(AOLSystemInfo)
|
|
#include "ShimHookMacro.h"
|
|
|
|
#define ALLOC_SIZE 50
|
|
|
|
APIHOOK_ENUM_BEGIN
|
|
APIHOOK_ENUM_ENTRY(RegEnumKeyExA)
|
|
APIHOOK_ENUM_END
|
|
|
|
/*++
|
|
|
|
The idea here is to check for the buffer sizes and wait till it is
|
|
one size close to it and then allocate a buffer and pass it onto the
|
|
API.
|
|
|
|
--*/
|
|
|
|
LONG
|
|
APIHOOK(RegEnumKeyExA)(
|
|
HKEY hkey,
|
|
DWORD dwIndex,
|
|
LPSTR lpName,
|
|
LPDWORD lpcName,
|
|
LPDWORD lpReserved,
|
|
LPSTR lpClass,
|
|
LPDWORD lpcClass,
|
|
PFILETIME lpftLastWriteTime
|
|
)
|
|
{
|
|
LONG lRet = 0;
|
|
static BOOL bSet = FALSE;
|
|
DWORD dwNameSize = *(lpcName) ? *(lpcName) : ALLOC_SIZE;
|
|
|
|
// Get the difference in the passed buffer gap
|
|
DWORD dwSize = (DWORD)((LPSTR)lpcName - lpName);
|
|
if (!bSet && (dwSize <= dwNameSize))
|
|
{
|
|
bSet = TRUE;
|
|
}
|
|
|
|
if (bSet)
|
|
{
|
|
lpName = (LPSTR)HeapAlloc(GetProcessHeap(),
|
|
HEAP_NO_SERIALIZE | HEAP_ZERO_MEMORY,
|
|
ALLOC_SIZE
|
|
);
|
|
if (!lpName)
|
|
{
|
|
return ERROR_NO_MORE_ITEMS;
|
|
}
|
|
*(lpcName) = dwNameSize;
|
|
}
|
|
|
|
|
|
lRet = ORIGINAL_API(RegEnumKeyExA)(hkey, dwIndex, lpName,lpcName,
|
|
lpReserved, lpClass, lpcClass, lpftLastWriteTime);
|
|
|
|
if (lRet == ERROR_NO_MORE_ITEMS)
|
|
{
|
|
bSet = FALSE;
|
|
}
|
|
return lRet;
|
|
}
|
|
|
|
|
|
|
|
/*++
|
|
|
|
Register hooked functions
|
|
|
|
--*/
|
|
|
|
HOOK_BEGIN
|
|
APIHOOK_ENTRY(ADVAPI32.DLL, RegEnumKeyExA)
|
|
HOOK_END
|
|
|
|
IMPLEMENT_SHIM_END
|
|
|