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reactos/dll/appcompat/apphelp/hsdb.c

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/*
* PROJECT: ReactOS Application compatibility module
* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
* PURPOSE: Shim matching / data (un)packing
* COPYRIGHT: Copyright 2011 André Hentschel
* Copyright 2013 Mislav Blaževic
* Copyright 2015-2018 Mark Jansen (mark.jansen@reactos.org)
*/
#define WIN32_NO_STATUS
#include "windows.h"
#include "ntndk.h"
#include "strsafe.h"
#include "apphelp.h"
#define MAX_LAYER_LENGTH 256
#define GPLK_USER 1
#define GPLK_MACHINE 2
typedef struct _ShimData
{
WCHAR szModule[MAX_PATH];
DWORD dwSize;
DWORD dwMagic;
SDBQUERYRESULT Query;
WCHAR szLayer[MAX_LAYER_LENGTH];
DWORD unknown; // 0x14c
} ShimData;
#define SHIMDATA_MAGIC 0xAC0DEDAB
static BOOL WINAPI SdbpFileExists(LPCWSTR path)
{
DWORD attr = GetFileAttributesW(path);
return (attr != INVALID_FILE_ATTRIBUTES && !(attr & FILE_ATTRIBUTE_DIRECTORY));
}
/* Given a 'MATCHING_FILE' tag and an ATTRINFO array,
check all tags defined in the MATCHING_FILE against the ATTRINFO */
static BOOL SdbpMatchFileAttributes(PDB pdb, TAGID matching_file, PATTRINFO attribs, DWORD attr_count)
{
TAGID child;
for (child = SdbGetFirstChild(pdb, matching_file);
child != TAGID_NULL; child = SdbGetNextChild(pdb, matching_file, child))
{
TAG tag = SdbGetTagFromTagID(pdb, child);
DWORD n;
/* Already handled! */
if (tag == TAG_NAME)
continue;
if (tag == TAG_UPTO_BIN_FILE_VERSION ||
tag == TAG_UPTO_BIN_PRODUCT_VERSION ||
tag == TAG_UPTO_LINK_DATE)
{
SHIM_WARN("Unimplemented TAG_UPTO_XXXXX\n");
continue;
}
for (n = 0; n < attr_count; ++n)
{
PATTRINFO attr = attribs + n;
if (attr->flags == ATTRIBUTE_AVAILABLE && attr->type == tag)
{
DWORD dwval;
WCHAR* lpval;
QWORD qwval;
switch (tag & TAG_TYPE_MASK)
{
case TAG_TYPE_DWORD:
dwval = SdbReadDWORDTag(pdb, child, 0);
if (dwval != attr->dwattr)
return FALSE;
break;
case TAG_TYPE_STRINGREF:
lpval = SdbGetStringTagPtr(pdb, child);
if (!lpval || wcsicmp(attr->lpattr, lpval))
return FALSE;
break;
case TAG_TYPE_QWORD:
qwval = SdbReadQWORDTag(pdb, child, 0);
if (qwval != attr->qwattr)
return FALSE;
break;
default:
SHIM_WARN("Unhandled type 0x%x MATCHING_FILE\n", (tag & TAG_TYPE_MASK));
return FALSE;
}
}
}
if (n == attr_count)
SHIM_WARN("Unhandled tag %ws in MACHING_FILE\n", SdbTagToString(tag));
}
return TRUE;
}
/* Given an 'exe' tag and an ATTRINFO array (for the main file),
verify that the main file and any additional files match */
static BOOL WINAPI SdbpMatchExe(PDB pdb, TAGID exe, const WCHAR* dir, PATTRINFO main_attribs, DWORD main_attr_count)
{
RTL_UNICODE_STRING_BUFFER FullPathName = { { 0 } };
WCHAR FullPathBuffer[MAX_PATH];
UNICODE_STRING UnicodeDir;
TAGID matching_file;
PATTRINFO attribs = NULL;
DWORD attr_count;
BOOL IsMatch = FALSE;
RtlInitUnicodeString(&UnicodeDir, dir);
RtlInitBuffer(&FullPathName.ByteBuffer, (PUCHAR)FullPathBuffer, sizeof(FullPathBuffer));
for (matching_file = SdbFindFirstTag(pdb, exe, TAG_MATCHING_FILE);
matching_file != TAGID_NULL; matching_file = SdbFindNextTag(pdb, exe, matching_file))
{
TAGID tagName = SdbFindFirstTag(pdb, matching_file, TAG_NAME);
UNICODE_STRING Name;
USHORT Len;
RtlInitUnicodeString(&Name, SdbGetStringTagPtr(pdb, tagName));
if (!Name.Buffer)
goto Cleanup;
/* An '*' here means use the main executable' */
if (!wcscmp(Name.Buffer, L"*"))
{
/* We already have these attributes, so we do not need to retrieve them */
if (!SdbpMatchFileAttributes(pdb, matching_file, main_attribs, main_attr_count))
goto Cleanup;
continue;
}
/* Technically, one UNICODE_NULL and one path separator. */
Len = UnicodeDir.Length + Name.Length + sizeof(UNICODE_NULL) + sizeof(UNICODE_NULL);
if (!NT_SUCCESS(RtlEnsureBufferSize(RTL_SKIP_BUFFER_COPY, &FullPathName.ByteBuffer, Len)))
goto Cleanup;
if (Len > FullPathName.ByteBuffer.Size)
goto Cleanup;
RtlInitEmptyUnicodeString(&FullPathName.String, (PWCHAR)FullPathName.ByteBuffer.Buffer, FullPathName.ByteBuffer.Size);
RtlCopyUnicodeString(&FullPathName.String, &UnicodeDir);
RtlAppendUnicodeToString(&FullPathName.String, L"\\");
RtlAppendUnicodeStringToString(&FullPathName.String, &Name);
/* If the file does not exist, do not bother trying to read it's attributes */
if (!SdbpFileExists(FullPathName.String.Buffer))
goto Cleanup;
/* Do we have some attributes from the previous iteration? */
if (attribs)
SdbFreeFileAttributes(attribs);
if (!SdbGetFileAttributes(FullPathName.String.Buffer, &attribs, &attr_count))
goto Cleanup;
if (!SdbpMatchFileAttributes(pdb, matching_file, attribs, attr_count))
goto Cleanup;
}
IsMatch = TRUE;
Cleanup:
RtlFreeBuffer(&FullPathName.ByteBuffer);
if (attribs)
SdbFreeFileAttributes(attribs);
return IsMatch;
}
/* Add a database guid to the query result */
static void SdbpAddDatabaseGuid(PDB pdb, PSDBQUERYRESULT result)
{
size_t n;
for (n = 0; n < _countof(result->rgGuidDB); ++n)
{
if (!memcmp(&result->rgGuidDB[n], &pdb->database_id, sizeof(pdb->database_id)))
return;
if (result->dwCustomSDBMap & (1<<n))
continue;
memcpy(&result->rgGuidDB[n], &pdb->database_id, sizeof(result->rgGuidDB[n]));
result->dwCustomSDBMap |= (1<<n);
return;
}
}
/* Add one layer to the query result */
static BOOL SdbpAddSingleLayerMatch(TAGREF layer, PSDBQUERYRESULT result)
{
size_t n;
for (n = 0; n < result->dwLayerCount; ++n)
{
if (result->atrLayers[n] == layer)
return FALSE;
}
if (n >= _countof(result->atrLayers))
return FALSE;
result->atrLayers[n] = layer;
result->dwLayerCount++;
return TRUE;
}
/* Translate a layer name to a tagref + add it to the query result */
static BOOL SdbpAddNamedLayerMatch(HSDB hsdb, PCWSTR layerName, PSDBQUERYRESULT result)
{
TAGID database, layer;
TAGREF tr;
PDB pdb = hsdb->pdb;
database = SdbFindFirstTag(pdb, TAGID_ROOT, TAG_DATABASE);
if (database == TAGID_NULL)
return FALSE;
layer = SdbFindFirstNamedTag(pdb, database, TAG_LAYER, TAG_NAME, layerName);
if (layer == TAGID_NULL)
return FALSE;
if (!SdbTagIDToTagRef(hsdb, pdb, layer, &tr))
return FALSE;
if (!SdbpAddSingleLayerMatch(tr, result))
return FALSE;
SdbpAddDatabaseGuid(pdb, result);
return TRUE;
}
/* Add all layers for the exe tag to the query result */
static void SdbpAddExeLayers(HSDB hsdb, PDB pdb, TAGID tagExe, PSDBQUERYRESULT result)
{
TAGID layer = SdbFindFirstTag(pdb, tagExe, TAG_LAYER);
while (layer != TAGID_NULL)
{
TAGREF tr;
TAGID layerIdTag = SdbFindFirstTag(pdb, layer, TAG_LAYER_TAGID);
DWORD tagId = SdbReadDWORDTag(pdb, layerIdTag, TAGID_NULL);
if (layerIdTag != TAGID_NULL &&
tagId != TAGID_NULL &&
SdbTagIDToTagRef(hsdb, pdb, tagId, &tr))
{
SdbpAddSingleLayerMatch(tr, result);
}
else
{
/* Try a name lookup */
TAGID layerTag = SdbFindFirstTag(pdb, layer, TAG_NAME);
if (layerTag != TAGID_NULL)
{
LPCWSTR layerName = SdbGetStringTagPtr(pdb, layerTag);
if (layerName)
{
SdbpAddNamedLayerMatch(hsdb, layerName, result);
}
}
}
layer = SdbFindNextTag(pdb, tagExe, layer);
}
}
/* Add an exe tag to the query result */
static void SdbpAddExeMatch(HSDB hsdb, PDB pdb, TAGID tagExe, PSDBQUERYRESULT result)
{
size_t n;
TAGREF tr;
if (!SdbTagIDToTagRef(hsdb, pdb, tagExe, &tr))
return;
for (n = 0; n < result->dwExeCount; ++n)
{
if (result->atrExes[n] == tr)
return;
}
if (n >= _countof(result->atrExes))
return;
result->atrExes[n] = tr;
result->dwExeCount++;
SdbpAddExeLayers(hsdb, pdb, tagExe, result);
SdbpAddDatabaseGuid(pdb, result);
}
/* Add all named layers to the query result */
static ULONG SdbpAddLayerMatches(HSDB hsdb, PWSTR pwszLayers, DWORD pdwBytes, PSDBQUERYRESULT result)
{
PWSTR start = pwszLayers, p;
ULONG Added = 0;
const PWSTR end = pwszLayers + (pdwBytes / sizeof(WCHAR));
while (start < end && (*start == L'!' || *start == L'#' || *start == L' ' || *start == L'\t'))
start++;
if (start == end)
return 0;
do
{
while (*start == L' ' || *start == L'\t')
++start;
if (*start == UNICODE_NULL)
break;
p = wcspbrk(start, L" \t");
if (p)
*p = UNICODE_NULL;
if (SdbpAddNamedLayerMatch(hsdb, start, result))
Added++;
start = p + 1;
} while (start < end && p);
return Added;
}
static BOOL SdbpPropagateEnvLayers(HSDB hsdb, LPWSTR Environment, PSDBQUERYRESULT Result)
{
static const UNICODE_STRING EnvKey = RTL_CONSTANT_STRING(L"__COMPAT_LAYER");
UNICODE_STRING EnvValue;
NTSTATUS Status;
WCHAR Buffer[MAX_LAYER_LENGTH];
RtlInitEmptyUnicodeString(&EnvValue, Buffer, sizeof(Buffer));
Status = RtlQueryEnvironmentVariable_U(Environment, &EnvKey, &EnvValue);
if (!NT_SUCCESS(Status))
return FALSE;
return SdbpAddLayerMatches(hsdb, Buffer, EnvValue.Length, Result) > 0;
}
/**
* Opens specified shim database file. Handle returned by this function may only be used by
* functions which take HSDB param thus differing it from SdbOpenDatabase.
*
* @param [in] flags Specifies type of path or predefined database.
* @param [in] path Path to the shim database file.
*
* @return Success: Handle to the opened shim database, NULL otherwise.
*/
HSDB WINAPI SdbInitDatabase(DWORD flags, LPCWSTR path)
{
static const WCHAR shim[] = {'\\','s','y','s','m','a','i','n','.','s','d','b',0};
static const WCHAR msi[] = {'\\','m','s','i','m','a','i','n','.','s','d','b',0};
static const WCHAR drivers[] = {'\\','d','r','v','m','a','i','n','.','s','d','b',0};
LPCWSTR name;
WCHAR buffer[128];
HSDB hsdb;
hsdb = SdbAlloc(sizeof(SDB));
if (!hsdb)
return NULL;
hsdb->auto_loaded = 0;
/* Check for predefined databases */
if ((flags & HID_DATABASE_TYPE_MASK) && path == NULL)
{
switch (flags & HID_DATABASE_TYPE_MASK)
{
case SDB_DATABASE_MAIN_SHIM: name = shim; break;
case SDB_DATABASE_MAIN_MSI: name = msi; break;
case SDB_DATABASE_MAIN_DRIVERS: name = drivers; break;
default:
SdbReleaseDatabase(hsdb);
return NULL;
}
SdbGetAppPatchDir(NULL, buffer, _countof(buffer));
StringCchCatW(buffer, _countof(buffer), name);
flags = HID_DOS_PATHS;
}
hsdb->pdb = SdbOpenDatabase(path ? path : buffer, (flags & 0xF) - 1);
/* If database could not be loaded, a handle doesn't make sense either */
if (!hsdb->pdb)
{
SdbReleaseDatabase(hsdb);
return NULL;
}
return hsdb;
}
/**
* Closes shim database opened by SdbInitDatabase.
*
* @param [in] hsdb Handle to the shim database.
*/
void WINAPI SdbReleaseDatabase(HSDB hsdb)
{
SdbCloseDatabase(hsdb->pdb);
SdbFree(hsdb);
}
/**
* Queries database for a specified exe If hsdb is NULL default database shall be loaded and
* searched.
*
* @param [in] hsdb Handle to the shim database.
* @param [in] path Path to executable for which we query database.
* @param [in] module_name Unused.
* @param [in] env The environment block to use
* @param [in] flags 0 or SDBGMEF_IGNORE_ENVIRONMENT.
* @param [out] result Pointer to structure in which query result shall be stored.
*
* @return TRUE if it succeeds, FALSE if it fails.
*/
BOOL WINAPI SdbGetMatchingExe(HSDB hsdb, LPCWSTR path, LPCWSTR module_name,
LPCWSTR env, DWORD flags, PSDBQUERYRESULT result)
{
BOOL ret = FALSE;
TAGID database, iter, name;
PATTRINFO attribs = NULL;
DWORD attr_count;
RTL_UNICODE_STRING_BUFFER DosApplicationName = { { 0 } };
WCHAR DosPathBuffer[MAX_PATH];
ULONG PathType = 0;
LPWSTR file_name;
WCHAR wszLayers[MAX_LAYER_LENGTH];
DWORD dwSize;
PDB pdb;
/* Load default database if one is not specified */
if (!hsdb)
{
/* To reproduce windows behaviour HID_DOS_PATHS needs
* to be specified when loading default database */
hsdb = SdbInitDatabase(HID_DOS_PATHS | SDB_DATABASE_MAIN_SHIM, NULL);
if (hsdb)
hsdb->auto_loaded = TRUE;
}
ZeroMemory(result, sizeof(*result));
/* No database could be loaded */
if (!hsdb || !path)
return FALSE;
/* We do not support multiple db's yet! */
pdb = hsdb->pdb;
RtlInitUnicodeString(&DosApplicationName.String, path);
RtlInitBuffer(&DosApplicationName.ByteBuffer, (PUCHAR)DosPathBuffer, sizeof(DosPathBuffer));
if (!NT_SUCCESS(RtlEnsureBufferSize(RTL_SKIP_BUFFER_COPY, &DosApplicationName.ByteBuffer, DosApplicationName.String.MaximumLength)))
{
SHIM_ERR("Failed to convert allocate buffer.");
goto Cleanup;
}
/* Update the internal buffer to contain the string */
memcpy(DosApplicationName.ByteBuffer.Buffer, path, DosApplicationName.String.MaximumLength);
/* Make sure the string uses our internal buffer (we want to modify the buffer,
and RtlNtPathNameToDosPathName does not always modify the String to point to the Buffer)! */
DosApplicationName.String.Buffer = (PWSTR)DosApplicationName.ByteBuffer.Buffer;
if (!NT_SUCCESS(RtlNtPathNameToDosPathName(0, &DosApplicationName, &PathType, NULL)))
{
SHIM_ERR("Failed to convert %S to DOS Path.", path);
goto Cleanup;
}
/* Extract file name */
file_name = wcsrchr(DosApplicationName.String.Buffer, '\\');
if (!file_name)
{
SHIM_ERR("Failed to find Exe name in %wZ.", &DosApplicationName.String);
goto Cleanup;
}
/* We will use the buffer for exe name and directory. */
*(file_name++) = UNICODE_NULL;
/* DATABASE is list TAG which contains all executables */
database = SdbFindFirstTag(pdb, TAGID_ROOT, TAG_DATABASE);
if (database == TAGID_NULL)
{
goto Cleanup;
}
/* EXE is list TAG which contains data required to match executable */
iter = SdbFindFirstTag(pdb, database, TAG_EXE);
/* Search for entry in database, we should look into indexing tags! */
while (iter != TAGID_NULL)
{
LPWSTR foundName;
/* Check if exe name matches */
name = SdbFindFirstTag(pdb, iter, TAG_NAME);
/* If this is a malformed DB, (no TAG_NAME), we should not crash. */
foundName = SdbGetStringTagPtr(pdb, name);
if (foundName && !wcsicmp(foundName, file_name))
{
/* Get information about executable required to match it with database entry */
if (!attribs)
{
if (!SdbGetFileAttributes(path, &attribs, &attr_count))
goto Cleanup;
}
/* We have a null terminator before the application name, so DosApplicationName only contains the path. */
if (SdbpMatchExe(pdb, iter, DosApplicationName.String.Buffer, attribs, attr_count))
{
ret = TRUE;
SdbpAddExeMatch(hsdb, pdb, iter, result);
}
}
/* Continue iterating */
iter = SdbFindNextTag(pdb, database, iter);
}
/* Restore the full path. */
*(--file_name) = L'\\';
dwSize = sizeof(wszLayers);
if (SdbGetPermLayerKeys(DosApplicationName.String.Buffer, wszLayers, &dwSize, GPLK_MACHINE | GPLK_USER))
{
SdbpAddLayerMatches(hsdb, wszLayers, dwSize, result);
ret = TRUE;
}
if (!(flags & SDBGMEF_IGNORE_ENVIRONMENT))
{
if (SdbpPropagateEnvLayers(hsdb, (LPWSTR)env, result))
{
ret = TRUE;
result->dwFlags |= SHIMREG_HAS_ENVIRONMENT;
}
}
Cleanup:
RtlFreeBuffer(&DosApplicationName.ByteBuffer);
if (attribs)
SdbFreeFileAttributes(attribs);
if (hsdb->auto_loaded)
SdbReleaseDatabase(hsdb);
return ret;
}
/**
* Retrieves AppPatch directory.
*
* @param [in] pdb Handle to the shim database.
* @param [out] path Pointer to memory in which path shall be written.
* @param [in] size Size of the buffer in characters.
*/
HRESULT WINAPI SdbGetAppPatchDir(HSDB hsdb, LPWSTR path, DWORD size)
{
static WCHAR* default_dir = NULL;
static CONST WCHAR szAppPatch[] = {'\\','A','p','p','P','a','t','c','h',0};
/* In case function fails, path holds empty string */
if (size > 0)
*path = 0;
if (!default_dir)
{
WCHAR* tmp;
HRESULT hr = E_FAIL;
UINT len = GetSystemWindowsDirectoryW(NULL, 0) + SdbpStrlen(szAppPatch);
tmp = SdbAlloc((len + 1)* sizeof(WCHAR));
if (tmp)
{
UINT r = GetSystemWindowsDirectoryW(tmp, len+1);
if (r && r < len)
{
hr = StringCchCatW(tmp, len+1, szAppPatch);
if (SUCCEEDED(hr))
{
if (InterlockedCompareExchangePointer((void**)&default_dir, tmp, NULL) == NULL)
tmp = NULL;
}
}
if (tmp)
SdbFree(tmp);
}
if (!default_dir)
{
SHIM_ERR("Unable to obtain default AppPatch directory (0x%x)\n", hr);
return hr;
}
}
if (!hsdb)
{
return StringCchCopyW(path, size, default_dir);
}
else
{
SHIM_ERR("Unimplemented for hsdb != NULL\n");
return E_NOTIMPL;
}
}
/**
* Translates the given trWhich to a specific database / tagid
*
* @param [in] hsdb Handle to the database.
* @param [in] trWhich Tagref to find
* @param [out,opt] ppdb The Shim database that trWhich belongs to.
* @param [out,opt] ptiWhich The tagid that trWhich corresponds to.
*
* @return TRUE if it succeeds, FALSE if it fails.
*/
BOOL WINAPI SdbTagRefToTagID(HSDB hsdb, TAGREF trWhich, PDB* ppdb, TAGID* ptiWhich)
{
if (trWhich & 0xf0000000)
{
SHIM_ERR("Multiple shim databases not yet implemented!\n");
if (ppdb)
*ppdb = NULL;
if (ptiWhich)
*ptiWhich = TAG_NULL;
return FALSE;
}
/* There seems to be no range checking on trWhich.. */
if (ppdb)
*ppdb = hsdb->pdb;
if (ptiWhich)
*ptiWhich = trWhich & 0x0fffffff;
return TRUE;
}
/**
* Translates the given trWhich to a specific database / tagid
*
* @param [in] hsdb Handle to the database.
* @param [in] pdb The Shim database that tiWhich belongs to.
* @param [in] tiWhich Path to executable for which we query database.
* @param [out,opt] ptrWhich The tagid that tiWhich corresponds to.
*
* @return TRUE if it succeeds, FALSE if it fails.
*/
BOOL WINAPI SdbTagIDToTagRef(HSDB hsdb, PDB pdb, TAGID tiWhich, TAGREF* ptrWhich)
{
if (pdb != hsdb->pdb)
{
SHIM_ERR("Multiple shim databases not yet implemented!\n");
if (ptrWhich)
*ptrWhich = TAGREF_NULL;
return FALSE;
}
if (ptrWhich)
*ptrWhich = tiWhich & 0x0fffffff;
return TRUE;
}
/* Convert a query result to shim data that will be loaded in the child process */
BOOL WINAPI SdbPackAppCompatData(HSDB hsdb, PSDBQUERYRESULT pQueryResult, PVOID* ppData, DWORD *pdwSize)
{
ShimData* pData;
HRESULT hr;
DWORD n;
if (!pQueryResult || !ppData || !pdwSize)
{
SHIM_WARN("Invalid params: %p, %p, %p\n", pQueryResult, ppData, pdwSize);
return FALSE;
}
pData = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(ShimData));
if (!pData)
{
SHIM_WARN("Unable to allocate %d bytes\n", sizeof(ShimData));
return FALSE;
}
GetSystemWindowsDirectoryW(pData->szModule, _countof(pData->szModule));
hr = StringCchCatW(pData->szModule, _countof(pData->szModule), L"\\system32\\apphelp.dll");
if (!SUCCEEDED(hr))
{
SHIM_ERR("Unable to append module name (0x%x)\n", hr);
RtlFreeHeap(RtlGetProcessHeap(), 0, pData);
return FALSE;
}
pData->dwSize = sizeof(*pData);
pData->dwMagic = SHIMDATA_MAGIC;
pData->Query = *pQueryResult;
pData->unknown = 0;
pData->szLayer[0] = UNICODE_NULL; /* TODO */
SHIM_INFO("\ndwFlags 0x%x\ndwMagic 0x%x\ntrExe 0x%x\ntrLayer 0x%x\n",
pData->Query.dwFlags, pData->dwMagic, pData->Query.atrExes[0], pData->Query.atrLayers[0]);
/* Database List */
/* 0x0 {GUID} NAME */
for (n = 0; n < pQueryResult->dwLayerCount; ++n)
{
SHIM_INFO("Layer 0x%x\n", pQueryResult->atrLayers[n]);
}
*ppData = pData;
*pdwSize = pData->dwSize;
return TRUE;
}
BOOL WINAPI SdbUnpackAppCompatData(HSDB hsdb, LPCWSTR pszImageName, PVOID pData, PSDBQUERYRESULT pQueryResult)
{
ShimData* pShimData = pData;
if (!pShimData || pShimData->dwMagic != SHIMDATA_MAGIC || pShimData->dwSize < sizeof(ShimData))
return FALSE;
if (!pQueryResult)
return FALSE;
/* szLayer? */
*pQueryResult = pShimData->Query;
return TRUE;
}
DWORD WINAPI SdbGetAppCompatDataSize(ShimData* pData)
{
if (!pData || pData->dwMagic != SHIMDATA_MAGIC)
return 0;
return pData->dwSize;
}
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