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reactos/dll/win32/kernel32/client/appcache.c

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/*
* PROJECT: ReactOS Win32 Base API
* LICENSE: GPL - See COPYING in the top level directory
* FILE: dll/win32/kernel32/client/appcache.c
* PURPOSE: Application Compatibility Cache
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
*/
/* INCLUDES *******************************************************************/
#include <k32.h>
#define NDEBUG
#include <debug.h>
/* GLOBALS ********************************************************************/
ULONG g_ShimsDisabled = -1;
static BOOL g_ApphelpInitialized = FALSE;
static PVOID g_pApphelpCheckRunAppEx;
static PVOID g_pSdbPackAppCompatData;
typedef BOOL (WINAPI *tApphelpCheckRunAppEx)(HANDLE FileHandle, PVOID Unk1, PVOID Unk2, PWCHAR ApplicationName, PVOID Environment, USHORT ExeType, PULONG Reason,
PVOID* SdbQueryAppCompatData, PULONG SdbQueryAppCompatDataSize, PVOID* SxsData, PULONG SxsDataSize,
PULONG FusionFlags, PULONG64 SomeFlag1, PULONG SomeFlag2);
typedef BOOL (WINAPI *tSdbPackAppCompatData)(PVOID hsdb, PVOID pQueryResult, PVOID* ppData, DWORD *dwSize);
#define APPHELP_VALID_RESULT 0x10000
#define APPHELP_RESULT_NOTFOUND 0x20000
#define APPHELP_RESULT_FOUND 0x40000
/* FUNCTIONS ******************************************************************/
BOOLEAN
WINAPI
IsShimInfrastructureDisabled(VOID)
{
HANDLE KeyHandle;
NTSTATUS Status;
KEY_VALUE_PARTIAL_INFORMATION KeyInfo;
ULONG ResultLength;
UNICODE_STRING OptionKey = RTL_CONSTANT_STRING(L"\\Registry\\MACHINE\\System\\CurrentControlSet\\Control\\SafeBoot\\Option");
UNICODE_STRING AppCompatKey = RTL_CONSTANT_STRING(L"\\Registry\\MACHINE\\System\\CurrentControlSet\\Control\\Session Manager\\AppCompatibility");
UNICODE_STRING PolicyKey = RTL_CONSTANT_STRING(L"\\Registry\\MACHINE\\Software\\Policies\\Microsoft\\Windows\\AppCompat");
UNICODE_STRING OptionValue = RTL_CONSTANT_STRING(L"OptionValue");
UNICODE_STRING DisableAppCompat = RTL_CONSTANT_STRING(L"DisableAppCompat");
UNICODE_STRING DisableEngine = RTL_CONSTANT_STRING(L"DisableEngine");
OBJECT_ATTRIBUTES OptionKeyAttributes = RTL_CONSTANT_OBJECT_ATTRIBUTES(&OptionKey, OBJ_CASE_INSENSITIVE);
OBJECT_ATTRIBUTES AppCompatKeyAttributes = RTL_CONSTANT_OBJECT_ATTRIBUTES(&AppCompatKey, OBJ_CASE_INSENSITIVE);
OBJECT_ATTRIBUTES PolicyKeyAttributes = RTL_CONSTANT_OBJECT_ATTRIBUTES(&PolicyKey, OBJ_CASE_INSENSITIVE);
/*
* This is a TROOLEAN, -1 means we haven't yet figured it out.
* 0 means shims are enabled, and 1 means shims are disabled!
*/
if (g_ShimsDisabled == -1)
{
ULONG DisableShims = FALSE;
/* Open the safe mode key */
Status = NtOpenKey(&KeyHandle, KEY_QUERY_VALUE, &OptionKeyAttributes);
if (NT_SUCCESS(Status))
{
/* Check if this is safemode */
Status = NtQueryValueKey(KeyHandle,
&OptionValue,
KeyValuePartialInformation,
&KeyInfo,
sizeof(KeyInfo),
&ResultLength);
NtClose(KeyHandle);
if ((NT_SUCCESS(Status)) &&
(KeyInfo.Type == REG_DWORD) &&
(KeyInfo.DataLength == sizeof(ULONG)) &&
(KeyInfo.Data[0] != FALSE))
{
/* It is, so disable shims! */
DisableShims = TRUE;
}
}
if (!DisableShims)
{
/* Open the app compatibility engine settings key */
Status = NtOpenKey(&KeyHandle, KEY_QUERY_VALUE, &AppCompatKeyAttributes);
if (NT_SUCCESS(Status))
{
/* Check if the app compat engine is turned off */
Status = NtQueryValueKey(KeyHandle,
&DisableAppCompat,
KeyValuePartialInformation,
&KeyInfo,
sizeof(KeyInfo),
&ResultLength);
NtClose(KeyHandle);
if ((NT_SUCCESS(Status)) &&
(KeyInfo.Type == REG_DWORD) &&
(KeyInfo.DataLength == sizeof(ULONG)) &&
(KeyInfo.Data[0] == TRUE))
{
/* It is, so disable shims! */
DisableShims = TRUE;
}
}
}
if (!DisableShims)
{
/* Finally, open the app compatibility policy key */
Status = NtOpenKey(&KeyHandle, KEY_QUERY_VALUE, &PolicyKeyAttributes);
if (NT_SUCCESS(Status))
{
/* Check if the system policy disables app compat */
Status = NtQueryValueKey(KeyHandle,
&DisableEngine,
KeyValuePartialInformation,
&KeyInfo,
sizeof(KeyInfo),
&ResultLength);
NtClose(KeyHandle);
if ((NT_SUCCESS(Status)) &&
(KeyInfo.Type == REG_DWORD) &&
(KeyInfo.DataLength == sizeof(ULONG)) &&
(KeyInfo.Data[0] == TRUE))
{
/* It does, so disable shims! */
DisableShims = TRUE;
}
}
}
g_ShimsDisabled = DisableShims;
}
/* Return if shims are disabled or not ("Enabled == 1" means disabled!) */
return g_ShimsDisabled ? TRUE : FALSE;
}
/*
* @unimplemented
*/
BOOL
WINAPI
BaseCheckAppcompatCache(IN PWCHAR ApplicationName,
IN HANDLE FileHandle,
IN PWCHAR Environment,
OUT PULONG Reason)
{
DPRINT("BaseCheckAppcompatCache is UNIMPLEMENTED\n");
if (Reason) *Reason = 0;
// We don't know this app.
return FALSE;
}
static
VOID
BaseInitApphelp(VOID)
{
WCHAR Buffer[MAX_PATH*2];
UNICODE_STRING DllPath = {0};
PVOID ApphelpAddress;
PVOID pApphelpCheckRunAppEx = NULL, pSdbPackAppCompatData = NULL;
RtlInitEmptyUnicodeString(&DllPath, Buffer, sizeof(Buffer));
RtlCopyUnicodeString(&DllPath, &BaseWindowsDirectory);
RtlAppendUnicodeToString(&DllPath, L"\\system32\\apphelp.dll");
if (NT_SUCCESS(LdrLoadDll(NULL, NULL, &DllPath, &ApphelpAddress)))
{
ANSI_STRING ProcName;
RtlInitAnsiString(&ProcName, "ApphelpCheckRunAppEx");
if (!NT_SUCCESS(LdrGetProcedureAddress(ApphelpAddress, &ProcName, 0, &pApphelpCheckRunAppEx)))
pApphelpCheckRunAppEx = NULL;
RtlInitAnsiString(&ProcName, "SdbPackAppCompatData");
if (!NT_SUCCESS(LdrGetProcedureAddress(ApphelpAddress, &ProcName, 0, &pSdbPackAppCompatData)))
pSdbPackAppCompatData = NULL;
}
if (InterlockedCompareExchangePointer(&g_pApphelpCheckRunAppEx, RtlEncodeSystemPointer(pApphelpCheckRunAppEx), NULL) == NULL)
{
g_pSdbPackAppCompatData = RtlEncodeSystemPointer(pSdbPackAppCompatData);
}
}
/*
*
*/
BOOL
WINAPI
BaseCheckRunApp(IN HANDLE FileHandle,
IN PWCHAR ApplicationName,
IN PWCHAR Environment,
IN USHORT ExeType,
IN PULONG pReason,
IN PVOID* SdbQueryAppCompatData,
IN PULONG SdbQueryAppCompatDataSize,
IN PVOID* SxsData,
IN PULONG SxsDataSize,
OUT PULONG FusionFlags)
{
ULONG Reason = 0;
ULONG64 Flags1 = 0;
ULONG Flags2 = 0;
BOOL Continue, NeedCleanup = FALSE;
tApphelpCheckRunAppEx pApphelpCheckRunAppEx;
tSdbPackAppCompatData pSdbPackAppCompatData;
PVOID QueryResult = NULL;
ULONG QueryResultSize = 0;
if (!g_ApphelpInitialized)
{
BaseInitApphelp();
g_ApphelpInitialized = TRUE;
}
pApphelpCheckRunAppEx = RtlDecodeSystemPointer(g_pApphelpCheckRunAppEx);
pSdbPackAppCompatData = RtlDecodeSystemPointer(g_pSdbPackAppCompatData);
if (!pApphelpCheckRunAppEx || !pSdbPackAppCompatData)
return TRUE;
if (pReason)
Reason = *pReason;
Continue = pApphelpCheckRunAppEx(FileHandle, NULL, NULL, ApplicationName, Environment, ExeType, &Reason,
&QueryResult, &QueryResultSize, SxsData, SxsDataSize, FusionFlags, &Flags1, &Flags2);
if (pReason)
*pReason = Reason;
if (Continue)
{
if ((Reason & (APPHELP_VALID_RESULT|APPHELP_RESULT_FOUND)) == (APPHELP_VALID_RESULT|APPHELP_RESULT_FOUND))
{
if (!pSdbPackAppCompatData(NULL, QueryResult, SdbQueryAppCompatData, SdbQueryAppCompatDataSize))
{
DPRINT1("SdbPackAppCompatData returned a failure!\n");
NeedCleanup = TRUE;
}
}
else
{
NeedCleanup = TRUE;
}
}
if (QueryResult)
RtlFreeHeap(RtlGetProcessHeap(), 0, QueryResult);
if (NeedCleanup)
{
BasepFreeAppCompatData(*SdbQueryAppCompatData, *SxsData);
*SdbQueryAppCompatData = NULL;
if (SdbQueryAppCompatDataSize)
*SdbQueryAppCompatDataSize = 0;
*SxsData = NULL;
if (SxsDataSize)
*SxsDataSize = 0;
}
return Continue;
}
/*
* @implemented
*/
NTSTATUS
WINAPI
BasepCheckBadapp(IN HANDLE FileHandle,
IN PWCHAR ApplicationName,
IN PWCHAR Environment,
IN USHORT ExeType,
IN PVOID* SdbQueryAppCompatData,
IN PULONG SdbQueryAppCompatDataSize,
IN PVOID* SxsData,
IN PULONG SxsDataSize,
OUT PULONG FusionFlags)
{
NTSTATUS Status = STATUS_SUCCESS;
ULONG Reason = 0;
/* Is shimming enabled by group policy? */
if (IsShimInfrastructureDisabled())
{
/* Nothing to worry about */
Status = STATUS_SUCCESS;
}
else
{
/* It is, check if we know about this app */
if (!BaseCheckAppcompatCache(ApplicationName,
FileHandle,
Environment,
&Reason))
{
if (!BaseCheckRunApp(FileHandle, ApplicationName, Environment, ExeType, &Reason,
SdbQueryAppCompatData, SdbQueryAppCompatDataSize, SxsData, SxsDataSize, FusionFlags))
{
Status = STATUS_ACCESS_DENIED;
}
}
}
/* Return caller the status */
return Status;
}
/*
* @unimplemented
*/
VOID
WINAPI
BaseDumpAppcompatCache(VOID)
{
STUB;
}
/*
* @unimplemented
*/
VOID
WINAPI
BaseFlushAppcompatCache(VOID)
{
STUB;
}
/*
* @implemented
*/
VOID
WINAPI
BasepFreeAppCompatData(IN PVOID AppCompatData,
IN PVOID AppCompatSxsData)
{
/* Free the input pointers if present */
if (AppCompatData) RtlFreeHeap(RtlGetProcessHeap(), 0, AppCompatData);
if (AppCompatSxsData) RtlFreeHeap(RtlGetProcessHeap(), 0, AppCompatSxsData);
}
/*
* @unimplemented
*/
VOID
WINAPI
BaseUpdateAppcompatCache(ULONG Unknown1,
ULONG Unknown2,
ULONG Unknown3)
{
STUB;
}
/*
* @unimplemented
*/
NTSTATUS
WINAPI
BaseCleanupAppcompatCache(VOID)
{
STUB;
return STATUS_NOT_IMPLEMENTED;
}
/*
* @unimplemented
*/
NTSTATUS
WINAPI
BaseCleanupAppcompatCacheSupport(PVOID pUnknown)
{
STUB;
return STATUS_NOT_IMPLEMENTED;
}
/*
* @unimplemented
*/
BOOL
WINAPI
BaseInitAppcompatCache(VOID)
{
STUB;
return FALSE;
}
/*
* @unimplemented
*/
BOOL
WINAPI
BaseInitAppcompatCacheSupport(VOID)
{
STUB;
return FALSE;
}
/*
* @unimplemented
*/
PVOID
WINAPI
GetComPlusPackageInstallStatus(VOID)
{
STUB;
return NULL;
}
/*
* @unimplemented
*/
BOOL
WINAPI
SetComPlusPackageInstallStatus(LPVOID lpInfo)
{
STUB;
return FALSE;
}
/*
* @unimplemented
*/
VOID
WINAPI
SetTermsrvAppInstallMode(IN BOOL bInstallMode)
{
STUB;
}
/*
* @unimplemented
*/
BOOL
WINAPI
TermsrvAppInstallMode(VOID)
{
STUB;
return FALSE;
}
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