Source code of Windows XP (NT5)
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881 lines
19 KiB

#include "acBrowser.h"
#include <wchar.h>
#include <commctrl.h>
#include <psapi.h>
#include "shimdb.h"
#define SHIM_LOG_FILE "shimlog.txt"
#define Alloc(cb) \
HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, cb)
#define Free(p) \
HeapFree(GetProcessHeap(), 0, p)
PDBENTRY g_pEntries;
PFIX g_pFixes;
#define MAX_DATA_SIZE 1024
#define MAX_NAME 256
#define MAX_DESCRIPTION 1024
WCHAR g_wszData[MAX_DATA_SIZE];
char g_szName[MAX_NAME];
char g_szDescription[MAX_DESCRIPTION];
#define APPCOMPAT_DISABLED 0x03
//
// REGISTRY STUFF. Needs to be revised
//
#define APPCOMPAT_KEY "Software\\Microsoft\\Windows NT\\CurrentVersion\\AppCompatFlags"
BOOL
CheckRegistry(
HKEY hkeyRoot,
char* pszGUID
)
{
LONG status;
HKEY hkey = NULL;
BOOL bDisabled = FALSE;
DWORD dwFlags;
DWORD type;
DWORD cbSize = sizeof(DWORD);
status = RegOpenKey(hkeyRoot, APPCOMPAT_KEY, &hkey);
if (status != ERROR_SUCCESS) {
return FALSE;
}
status = RegQueryValueEx(hkey, pszGUID, NULL, &type, (LPBYTE)&dwFlags, &cbSize);
if (status == ERROR_SUCCESS && type == REG_DWORD && (dwFlags & APPCOMPAT_DISABLED)) {
bDisabled = TRUE;
}
RegCloseKey(hkey);
return bDisabled;
}
BOOL
WriteRegistry(
HKEY hkeyRoot,
char* pszKeyName
)
{
LONG status;
HKEY hkey;
DWORD dwValue = 0x03;
DWORD dwDisposition = 0;
BOOL bDisabled = FALSE;
status = RegCreateKeyEx(hkeyRoot,
APPCOMPAT_KEY,
0,
NULL,
REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS,
NULL,
&hkey,
&dwDisposition);
if (status != ERROR_SUCCESS) {
LogMsg("Failed to set the value for \"%s\"\n", pszKeyName);
return FALSE;
}
status = RegSetValueEx(hkey, pszKeyName, 0, REG_DWORD, (LPBYTE)&dwValue, sizeof(DWORD));
RegCloseKey(hkey);
if (status != ERROR_SUCCESS) {
LogMsg("Failed to set the value for \"%s\"\n", pszKeyName);
return FALSE;
}
return TRUE;
}
BOOL
DeleteRegistry(
HKEY hkeyRoot,
char* pszKeyName
)
{
LONG status;
HKEY hkey = NULL;
DWORD dwValue = 0;
DWORD dwDisposition = 0;
BOOL bDisabled = FALSE;
status = RegOpenKey(hkeyRoot, APPCOMPAT_KEY, &hkey);
if (status != ERROR_SUCCESS) {
return TRUE;
}
status = RegDeleteValue(hkey, pszKeyName);
RegCloseKey(hkey);
return TRUE;
}
typedef void (*PFNFLUSHCACHE)(HWND, HINSTANCE, LPSTR, int);
void
FlushTheCache(
void
)
{
HINSTANCE hmod;
PFNFLUSHCACHE pfnFlushCache;
char szPath[MAX_PATH];
GetSystemDirectory(szPath, MAX_PATH);
lstrcat(szPath, "\\apphelp.dll");
hmod = LoadLibrary(szPath);
if (hmod != NULL) {
pfnFlushCache = (PFNFLUSHCACHE)GetProcAddress(hmod, "ShimFlushCache");
if (pfnFlushCache != NULL) {
(*pfnFlushCache)(0, 0, NULL, 0);
}
}
}
void
UpdateFixStatus(
char* pszGUID,
BOOL bPerUser,
BOOL bPerMachine
)
{
if (bPerUser) {
WriteRegistry(HKEY_CURRENT_USER, pszGUID);
} else {
DeleteRegistry(HKEY_CURRENT_USER, pszGUID);
}
if (bPerMachine) {
WriteRegistry(HKEY_LOCAL_MACHINE, pszGUID);
} else {
DeleteRegistry(HKEY_LOCAL_MACHINE, pszGUID);
}
FlushTheCache();
}
PFIX
AllocFix(
char* pszFixName,
char* pszFixDescription,
FIXTYPE type
)
{
PFIX pFix;
char* pszAlloc;
pFix = (PFIX)Alloc(sizeof(FIX));
if (pFix == NULL) {
LogMsg("Cannot allocate %d bytes\n", sizeof(FIX));
return NULL;
}
if (pszFixName == NULL || *pszFixName == 0) {
pFix->pszName = NULL;
} else {
pszAlloc = (char*)Alloc(lstrlen(pszFixName) + 1);
pFix->pszName = pszAlloc;
if (pszAlloc != NULL) {
lstrcpy(pszAlloc, pszFixName);
} else {
LogMsg("Cannot allocate %d bytes\n", lstrlen(pszFixName) + 1);
goto Error;
}
}
if (pszFixDescription == NULL || *pszFixDescription == 0) {
pFix->pszDescription = NULL;
} else {
pszAlloc = (char*)Alloc(lstrlen(pszFixDescription) + 1);
pFix->pszDescription = pszAlloc;
if (pszAlloc != NULL) {
lstrcpy(pszAlloc, pszFixDescription);
} else {
LogMsg("Cannot allocate %d bytes\n", lstrlen(pszFixDescription) + 1);
goto Error;
}
}
pFix->fixType = type;
pFix->pNext = NULL;
return pFix;
Error:
if (pFix->pszName != NULL) {
Free(pFix->pszName);
}
if (pFix->pszDescription != NULL) {
Free(pFix->pszDescription);
}
Free(pFix);
return NULL;
}
void
ReadFix(
PDB pdb,
TAGID tiFix,
FIXTYPE type
)
{
TAGID tiInfo;
TAG tWhich;
PFIX pFix;
ULONGLONG ullUser = 0;
ULONGLONG ullKernel = 0;
tiInfo = SdbGetFirstChild(pdb, tiFix);
g_szName[0] = 0;
g_szDescription[0] = 0;
while (tiInfo != 0) {
tWhich = SdbGetTagFromTagID(pdb, tiInfo);
switch (tWhich) {
case TAG_NAME:
if (SdbReadStringTag(pdb, tiInfo, g_wszData, MAX_NAME * sizeof(WCHAR))) {
wsprintf(g_szName, "%ws", g_wszData);
}
break;
case TAG_DESCRIPTION:
if (SdbReadStringTag(pdb, tiInfo, g_wszData, MAX_DESCRIPTION * sizeof(WCHAR))) {
wsprintf(g_szDescription, "%ws", g_wszData);
}
break;
case TAG_FLAG_MASK_USER:
ullUser = SdbReadQWORDTag(pdb, tiInfo, 0);
break;
case TAG_FLAG_MASK_KERNEL:
ullKernel = SdbReadQWORDTag(pdb, tiInfo, 0);
break;
default:
break;
}
tiInfo = SdbGetNextChild(pdb, tiFix, tiInfo);
}
pFix = AllocFix(g_szName, g_szDescription, type);
if (pFix != NULL) {
if (type == FIX_FLAG) {
if (ullKernel == 0) {
pFix->flagType = FLAG_USER;
pFix->ullMask = ullUser;
} else {
pFix->flagType = FLAG_KERNEL;
pFix->ullMask = ullKernel;
}
}
pFix->pNext = g_pFixes;
g_pFixes = pFix;
}
}
void
ReadFixes(
PDB pdb,
TAGID tiDatabase,
TAGID tiLibrary
)
{
TAGID tiFix;
tiFix = SdbFindFirstTag(pdb, tiLibrary, TAG_SHIM);
while (tiFix != 0) {
ReadFix(pdb, tiFix, FIX_SHIM);
tiFix = SdbFindNextTag(pdb, tiLibrary, tiFix);
}
tiFix = SdbFindFirstTag(pdb, tiLibrary, TAG_PATCH);
while (tiFix != 0) {
ReadFix(pdb, tiFix, FIX_PATCH);
tiFix = SdbFindNextTag(pdb, tiLibrary, tiFix);
}
tiFix = SdbFindFirstTag(pdb, tiLibrary, TAG_FLAG);
while (tiFix != 0) {
ReadFix(pdb, tiFix, FIX_FLAG);
tiFix = SdbFindNextTag(pdb, tiLibrary, tiFix);
}
//
// The LAYERs are under the DATABASE tag instead of LIBRARY :-(
//
tiFix = SdbFindFirstTag(pdb, tiDatabase, TAG_LAYER);
while (tiFix != 0) {
ReadFix(pdb, tiFix, FIX_LAYER);
tiFix = SdbFindNextTag(pdb, tiDatabase, tiFix);
}
}
PFIX
FindFix(
char* pszFixName,
FIXTYPE fixType
)
{
PFIX pFix = g_pFixes;
while (pFix != NULL) {
if (pFix->pszName && lstrcmpi(pszFixName, pFix->pszName) == 0) {
return pFix;
}
pFix = pFix->pNext;
}
return NULL;
}
PFIX
FindFlagFix(
ULONGLONG ullMask,
FLAGTYPE flagType
)
{
PFIX pFix = g_pFixes;
while (pFix != NULL) {
if (pFix->fixType == FIX_FLAG &&
pFix->flagType == flagType &&
pFix->ullMask == ullMask) {
return pFix;
}
pFix = pFix->pNext;
}
return NULL;
}
BOOL
AddFlags(
PDB pdb,
TAGID tiFlags,
PDBENTRY pEntry,
FLAGTYPE flagType
)
{
ULONGLONG ullFlags;
ULONGLONG ullMask = 1;
PFIX pFix;
PFIXLIST pFixList;
int i;
ullFlags = SdbReadQWORDTag(pdb, tiFlags, 0);
for (i = 0; i < sizeof(ULONGLONG) * 8; i++) {
if (ullFlags & ullMask) {
pFix = FindFlagFix(ullMask, flagType);
if (pFix == NULL) {
LogMsg("Cannot find flag fix ref\n");
}
pFixList = (PFIXLIST)Alloc(sizeof(FIXLIST));
if (pFixList == NULL) {
LogMsg("Cannot allocate %d bytes\n", sizeof(FIXLIST));
return FALSE;
}
pFixList->pFix = pFix;
pFixList->pNext = pEntry->pFirstFlag;
pEntry->pFirstFlag = pFixList;
}
ullMask <<= 1;
}
return TRUE;
}
BOOL
AddFix(
PDB pdb,
TAGID tiFix,
PDBENTRY pEntry,
FIXTYPE fixType
)
{
TAGID tiName;
char szFixName[MAX_NAME];
PFIX pFix;
PFIXLIST* ppHead;
PFIXLIST pFixList;
tiName = SdbFindFirstTag(pdb, tiFix, TAG_NAME);
if (!SdbReadStringTag(pdb, tiName, g_wszData, MAX_NAME * sizeof(WCHAR))) {
LogMsg("Cannot read the name of the fix\n");
return FALSE;
}
wsprintf(szFixName, "%ws", g_wszData);
pFix = FindFix(szFixName, fixType);
if (pFix == NULL) {
LogMsg("Cannot find fix ref for: \"%s\" type %d\n", szFixName, fixType);
return FALSE;
}
switch (fixType) {
case FIX_SHIM:
ppHead = &pEntry->pFirstShim;
break;
case FIX_PATCH:
ppHead = &pEntry->pFirstPatch;
break;
case FIX_FLAG:
ppHead = &pEntry->pFirstFlag;
break;
case FIX_LAYER:
ppHead = &pEntry->pFirstLayer;
break;
}
pFixList = (PFIXLIST)Alloc(sizeof(FIXLIST));
if (pFixList == NULL) {
LogMsg("Cannot allocate %d bytes\n", sizeof(FIXLIST));
return FALSE;
}
pFixList->pFix = pFix;
pFixList->pNext = *ppHead;
*ppHead = pFixList;
return TRUE;
}
void
AddAttr(
char* pszAttr,
PMATCHINGFILE pMatch
)
{
PATTRIBUTE pAttr;
pAttr = (PATTRIBUTE)Alloc(sizeof(ATTRIBUTE));
if (pAttr) {
pAttr->pszText = (char*)Alloc(lstrlen(pszAttr) + 1);
if (pAttr->pszText) {
lstrcpy(pAttr->pszText, pszAttr);
pAttr->pNext = pMatch->pFirstAttribute;
pMatch->pFirstAttribute = pAttr;
} else {
Free(pAttr);
}
}
}
VOID
PrintBinVer(
char* pszText,
LARGE_INTEGER* pliBinVer
)
{
wsprintf(pszText, "%d", HIWORD(pliBinVer->HighPart));
pszText += lstrlen(pszText);
if (LOWORD(pliBinVer->HighPart) == 0xFFFF) {
return;
}
wsprintf(pszText, ".%d", LOWORD(pliBinVer->HighPart));
pszText += lstrlen(pszText);
if (HIWORD(pliBinVer->LowPart) == 0xFFFF) {
return;
}
wsprintf(pszText, ".%d", HIWORD(pliBinVer->LowPart));
pszText += lstrlen(pszText);
if (LOWORD(pliBinVer->LowPart) == 0xFFFF) {
return;
}
wsprintf(pszText, ".%d", LOWORD(pliBinVer->LowPart));
pszText += lstrlen(pszText);
}
BOOL
AddMatchingFile(
PDB pdb,
TAGID tiMatch,
PDBENTRY pEntry
)
{
TAGID tiMatchInfo;
TAG tWhich;
DWORD dw;
LARGE_INTEGER li;
PMATCHINGFILE pMatch;
char szStr[128];
char szAttr[256];
pMatch = (PMATCHINGFILE)Alloc(sizeof(MATCHINGFILE));
if (pMatch == NULL) {
return FALSE;
}
tiMatchInfo = SdbGetFirstChild(pdb, tiMatch);
while (tiMatchInfo != 0) {
tWhich = SdbGetTagFromTagID(pdb, tiMatchInfo);
switch (tWhich) {
case TAG_NAME:
if (SdbReadStringTag(pdb, tiMatchInfo, g_wszData, MAX_NAME * sizeof(WCHAR))) {
wsprintf(szAttr, "%ws", g_wszData);
pMatch->pszName = (char*)Alloc(lstrlen(szAttr) + 1);
if (pMatch->pszName) {
lstrcpy(pMatch->pszName, szAttr);
}
}
break;
case TAG_SIZE:
dw = SdbReadDWORDTag(pdb, tiMatchInfo, 0);
if (dw != 0) {
wsprintf(szAttr, "File Size: 0x%X", dw);
AddAttr(szAttr, pMatch);
}
break;
case TAG_CHECKSUM:
dw = SdbReadDWORDTag(pdb, tiMatchInfo, 0);
if (dw != 0) {
wsprintf(szAttr, "File CheckSum: 0x%X", dw);
AddAttr(szAttr, pMatch);
}
break;
case TAG_COMPANY_NAME:
if (SdbReadStringTag(pdb, tiMatchInfo, g_wszData, MAX_DATA_SIZE * sizeof(WCHAR))) {
wsprintf(szStr, "%ws", g_wszData);
wsprintf(szAttr, "Company Name: %s", szStr);
AddAttr(szAttr, pMatch);
}
break;
case TAG_PRODUCT_NAME:
if (SdbReadStringTag(pdb, tiMatchInfo, g_wszData, MAX_DATA_SIZE * sizeof(WCHAR))) {
wsprintf(szStr, "%ws", g_wszData);
wsprintf(szAttr, "Product Name: %s", szStr);
AddAttr(szAttr, pMatch);
}
break;
case TAG_PRODUCT_VERSION:
if (SdbReadStringTag(pdb, tiMatchInfo, g_wszData, MAX_DATA_SIZE * sizeof(WCHAR))) {
wsprintf(szStr, "%ws", g_wszData);
wsprintf(szAttr, "Product Version: %s", szStr);
AddAttr(szAttr, pMatch);
}
break;
case TAG_FILE_DESCRIPTION:
if (SdbReadStringTag(pdb, tiMatchInfo, g_wszData, MAX_DATA_SIZE * sizeof(WCHAR))) {
wsprintf(szStr, "%ws", g_wszData);
wsprintf(szAttr, "File Description: %s", szStr);
AddAttr(szAttr, pMatch);
}
break;
case TAG_BIN_FILE_VERSION:
li.QuadPart = SdbReadQWORDTag(pdb, tiMatchInfo, 0);
if (li.HighPart != 0 || li.LowPart != 0) {
PrintBinVer(szStr, &li);
wsprintf(szAttr, "Binary File Version: %s", szStr);
AddAttr(szAttr, pMatch);
}
break;
case TAG_BIN_PRODUCT_VERSION:
li.QuadPart = SdbReadQWORDTag(pdb, tiMatchInfo, 0);
if (li.HighPart != 0 || li.LowPart != 0) {
PrintBinVer(szStr, &li);
wsprintf(szAttr, "Binary Product Version: %s", szStr);
AddAttr(szAttr, pMatch);
}
break;
default:
break;
}
tiMatchInfo = SdbGetNextChild(pdb, tiMatch, tiMatchInfo);
}
pMatch->pNext = pEntry->pFirstMatchingFile;
pEntry->pFirstMatchingFile = pMatch;
(pEntry->nMatchingFiles)++;
return TRUE;
}
void
AddEntry(
PDB pdb,
TAGID tiExe
)
{
TAGID tiExeInfo;
TAGID tiSeverity, tiHelpId;
char szStr[MAX_NAME];
TAG tWhich;
PDBENTRY pEntry;
tiExeInfo = SdbGetFirstChild(pdb, tiExe);
pEntry = (PDBENTRY)Alloc(sizeof(DBENTRY));
if (pEntry == NULL) {
LogMsg("Cannot allocate %d bytes\n", sizeof(DBENTRY));
return;
}
pEntry->pNext = g_pEntries;
g_pEntries = pEntry;
while (tiExeInfo != 0) {
tWhich = SdbGetTagFromTagID(pdb, tiExeInfo);
switch (tWhich) {
case TAG_NAME:
if (SdbReadStringTag(pdb, tiExeInfo, g_wszData, MAX_NAME * sizeof(WCHAR))) {
wsprintf(szStr, "%ws", g_wszData);
pEntry->pszExeName = (char*)Alloc(lstrlen(szStr) + 1);
if (pEntry->pszExeName) {
lstrcpy(pEntry->pszExeName, szStr);
}
}
break;
case TAG_APP_NAME:
if (SdbReadStringTag(pdb, tiExeInfo, g_wszData, MAX_NAME * sizeof(WCHAR))) {
wsprintf(szStr, "%ws", g_wszData);
pEntry->pszAppName = (char*)Alloc(lstrlen(szStr) + 1);
if (pEntry->pszAppName) {
lstrcpy(pEntry->pszAppName, szStr);
}
}
break;
case TAG_MATCHING_FILE:
AddMatchingFile(pdb, tiExeInfo, pEntry);
break;
case TAG_APPHELP:
pEntry->appHelp.bPresent = TRUE;
tiSeverity = SdbFindFirstTag(pdb, tiExeInfo, TAG_PROBLEMSEVERITY);
pEntry->appHelp.severity = (SEVERITY)SdbReadDWORDTag(pdb, tiSeverity, 0);
tiHelpId = SdbFindFirstTag(pdb, tiExeInfo, TAG_HTMLHELPID);
pEntry->appHelp.htmlHelpId = SdbReadDWORDTag(pdb, tiHelpId, 0);
break;
case TAG_SHIM_REF:
AddFix(pdb, tiExeInfo, pEntry, FIX_SHIM);
break;
case TAG_PATCH_REF:
AddFix(pdb, tiExeInfo, pEntry, FIX_PATCH);
break;
case TAG_LAYER:
AddFix(pdb, tiExeInfo, pEntry, FIX_LAYER);
break;
case TAG_FLAG_MASK_USER:
AddFlags(pdb, tiExeInfo, pEntry, FLAG_USER);
break;
case TAG_FLAG_MASK_KERNEL:
AddFlags(pdb, tiExeInfo, pEntry, FLAG_KERNEL);
break;
case TAG_EXE_ID:
{
GUID guid;
PVOID p;
p = SdbGetBinaryTagData(pdb, tiExeInfo);
if (p != NULL) {
memcpy(&guid, p, sizeof(GUID));
wsprintf(pEntry->szGUID,
"{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
guid.Data1,
guid.Data2,
guid.Data3,
guid.Data4[0],
guid.Data4[1],
guid.Data4[2],
guid.Data4[3],
guid.Data4[4],
guid.Data4[5],
guid.Data4[6],
guid.Data4[7]);
}
break;
}
default:
break;
}
tiExeInfo = SdbGetNextChild(pdb, tiExe, tiExeInfo);
}
pEntry->bDisablePerMachine = CheckRegistry(HKEY_LOCAL_MACHINE, pEntry->szGUID);
pEntry->bDisablePerUser = CheckRegistry(HKEY_CURRENT_USER, pEntry->szGUID);
}
PDBENTRY
GetDatabaseEntries(
void
)
{
WCHAR wszShimDB[MAX_PATH] = L"";
PDB pdb;
TAGID tiDatabase, tiLibrary, tiExe;
GetSystemWindowsDirectoryW(wszShimDB, MAX_PATH);
wcscat(wszShimDB, L"\\AppPatch\\sysmain.sdb");
//
// Open sysmain.sdb shim database
//
pdb = SdbOpenDatabase(wszShimDB, DOS_PATH);
if (pdb == NULL) {
LogMsg("Cannot open shim DB \"%ws\"\n", wszShimDB);
goto Cleanup;
}
tiDatabase = SdbFindFirstTag(pdb, TAGID_ROOT, TAG_DATABASE);
if (tiDatabase == 0) {
LogMsg("Cannot find TAG_DATABASE\n");
goto Cleanup;
}
tiLibrary = SdbFindFirstTag(pdb, tiDatabase, TAG_LIBRARY);
if (tiLibrary == 0) {
LogMsg("Cannot find TAG_LIBRARY\n");
goto Cleanup;
}
ReadFixes(pdb, tiDatabase, tiLibrary);
//
// Loop through the EXEs.
//
tiExe = SdbFindFirstTag(pdb, tiDatabase, TAG_EXE);
while (tiExe != 0) {
AddEntry(pdb, tiExe);
tiExe = SdbFindNextTag(pdb, tiDatabase, tiExe);
}
Cleanup:
if (pdb != NULL) {
SdbCloseDatabase(pdb);
}
return g_pEntries;
}