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1401 lines
40 KiB
1401 lines
40 KiB
/*++
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Copyright (c) 1989-2000 Microsoft Corporation
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Module Name:
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dbaccessplus.c
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Abstract:
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This module implements APIs to access the shim database.
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Author:
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clupu created sometime in 2001
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Revision History:
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several people contributed (vadimb, dmunsil, ...)
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--*/
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#include "sdbp.h"
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//
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// This file is not included for KERNEL_MODE
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//
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//
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// SdbInitDatabase is not used in Kernel mode. SdbInitDatabaseInMemory is used instead
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//
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HSDB
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SdbInitDatabase(
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IN DWORD dwFlags, // flags that tell how the database should be
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// initialized.
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IN LPCTSTR pszDatabasePath // the OPTIONAL full path to the database to be used.
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)
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/*++
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Return: A handle to the database.
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Desc: This is the first API someone needs to call to initiate comunication
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with the database. Should be paired with a call to SdbReleaseDatabase
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when finished.
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HID_DATABASE_FULLPATH indicates that pszDatabasePath points to the full path of the
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main database, when this flag is not present and pszDatabasePath
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is not NULL we treat it as the directory where sysmain.sdb and
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systest.sdb are to be found
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HID_DOS_PATHS indicates the format of the pszDatabasePath: when this flag is
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present, we treat it as being in dos c:\blah\blah format, when
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it's not present - we treat pszDatabasePath as being in nt format
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e.g. "\SystemRoot\Apppatch"
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HID_NO_DATABASE indicates that no database will be open at this time
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(pszDatabasePath is simply ignored, along with all
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the other flags)
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In addition to the flags above you can specify the type of the database that needs to be
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opened via the SDB_DATABASE_MAIN_* flags such as:
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SDB_DATABASE_MAIN_SHIM - sysmain.sdb
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SDB_DATABASE_MAIN_MSI - msimain.sdb
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SDB_DATABASE_MAIN_DRIVERS - drvmain.sdb
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This feature is not present on downlevel platforms.
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When any of the database type flags are provided, pszDatabasePath should be set to NULL
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--*/
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{
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// check whether the database we're trying to open is msi,
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// if so -- set the image type to msi
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USHORT uExeType = DEFAULT_IMAGE;
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if (dwFlags & HID_DATABASE_TYPE_MASK) {
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DWORD dwType = (dwFlags & HID_DATABASE_TYPE_MASK);
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//
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// check to see whether this database is msi -- if so, set image type accordingly
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//
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if (dwType == SDB_DATABASE_MAIN_MSI) {
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uExeType = (USHORT)IMAGE_FILE_MSI;
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}
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if (dwFlags & (HID_DATABASE_FULLPATH | HID_DOS_PATHS | HID_NO_DATABASE)) {
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//
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// there should be no "type" flags
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//
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dwFlags &= ~HID_DATABASE_TYPE_MASK;
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}
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}
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return SdbInitDatabaseEx(dwFlags, pszDatabasePath, uExeType);
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}
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HSDB
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SdbInitDatabaseEx(
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IN DWORD dwFlags, // flags that tell how the database should be
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// initialized.
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IN LPCTSTR pszDatabasePath,// the OPTIONAL full path to the database to be used.
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IN USHORT uExeType // executable's image type
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)
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/*++
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Return: A handle to the database.
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Desc: This is the first API someone needs to call to initiate comunication
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with the database. Should be paired with a call to SdbReleaseDatabase
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when finished.
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HID_DATABASE_FULLPATH indicates that pszDatabasePath points to the full path of the
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main database, when this flag is not present and pszDatabasePath
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is not NULL we treat it as the directory where sysmain.sdb and
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systest.sdb are to be found
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HID_DOS_PATHS indicates the format of the pszDatabasePath: when this flag is
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present, we treat it as being in dos c:\blah\blah format, when
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it's not present - we treat pszDatabasePath as being in nt format
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e.g. "\SystemRoot\Apppatch"
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HID_NO_DATABASE indicates that no database will be open at this time
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(pszDatabasePath is simply ignored, along with all
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the other flags)
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In addition to the flags above you can specify the type of the database that needs to be
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opened via the SDB_DATABASE_MAIN_* flags such as:
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SDB_DATABASE_MAIN_SHIM - sysmain.sdb
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SDB_DATABASE_MAIN_MSI - msimain.sdb
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SDB_DATABASE_MAIN_DRIVERS - drvmain.sdb
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This feature is not present on downlevel platforms.
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When any of the database type flags are provided, pszDatabasePath should be set to NULL
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--*/
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{
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TCHAR wszShimDB[MAX_PATH] = TEXT("");
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PSDBCONTEXT pContext;
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DWORD dwFlagOpen = 0;
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//
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// Allocate the HSDB handle.
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//
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pContext = (PSDBCONTEXT)SdbAlloc(sizeof(SDBCONTEXT));
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if (pContext == NULL) {
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DBGPRINT((sdlError, "SdbInitDatabaseEx", "Failed to allocate %d bytes for HSDB\n",
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sizeof(SDBCONTEXT)));
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return NULL;
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}
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pContext->uExeType = uExeType;
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//
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// See if we need to open db...
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//
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if (dwFlags & HID_NO_DATABASE) {
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DBGPRINT((sdlInfo, "SdbInitDatabaseEx", "No database is open\n"));
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goto InitDone;
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}
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//
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// Determine which flag to use with the OPEN call
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//
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dwFlagOpen = (dwFlags & HID_DOS_PATHS) ? DOS_PATH : NT_PATH;
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//
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// Open the main database and do this under a try/except so we don't kill
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// our caller if the database is corrupt.
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//
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__try {
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if (dwFlags & HID_DATABASE_FULLPATH) {
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// we better have the ptr
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if (pszDatabasePath == NULL) {
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DBGPRINT((sdlError, "SdbInitDatabaseEx",
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"Database not specified with the database path flag\n"));
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goto errHandle;
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}
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StringCchCopy(wszShimDB,
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CHARCOUNT(wszShimDB),
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pszDatabasePath);
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} else {
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//
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// we do not have a database path
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// see if we have a database type to open as a "main" db
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//
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#ifndef WIN32A_MODE
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//
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// This code works only on UNICODE
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//
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if (dwFlags & HID_DATABASE_TYPE_MASK) {
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DWORD dwDatabaseType = dwFlags;
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DWORD dwLen;
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dwLen = SdbpGetStandardDatabasePath((HSDB)pContext,
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dwDatabaseType,
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dwFlags,
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wszShimDB,
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CHARCOUNT(wszShimDB));
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if (dwLen > CHARCOUNT(wszShimDB)) {
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DBGPRINT((sdlError,
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"SdbInitDatabaseEx",
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"Cannot get standard database path\n"));
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goto errHandle;
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}
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} else
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#endif // WIN32A_MODE
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{
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if (pszDatabasePath != NULL) {
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int nLen;
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StringCchCopy(wszShimDB,
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CHARCOUNT(wszShimDB),
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pszDatabasePath);
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nLen = (int)_tcslen(wszShimDB);
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if (nLen > 0 && TEXT('\\') == wszShimDB[nLen-1]) {
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wszShimDB[nLen-1] = TEXT('\0');
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}
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} else { // standard database path
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if (dwFlags & HID_DOS_PATHS) {
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SdbpGetAppPatchDir((HSDB)pContext, wszShimDB, CHARCOUNT(wszShimDB));
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} else {
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if (uExeType == IMAGE_FILE_MACHINE_IA64) {
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StringCchCopy(wszShimDB,
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CHARCOUNT(wszShimDB),
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TEXT("\\SystemRoot\\AppPatch\\IA64"));
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} else {
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StringCchCopy(wszShimDB,
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CHARCOUNT(wszShimDB),
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TEXT("\\SystemRoot\\AppPatch"));
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}
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}
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}
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StringCchCat(wszShimDB, CHARCOUNT(wszShimDB), TEXT("\\sysmain.sdb"));
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}
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}
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pContext->pdbMain = SdbOpenDatabase(wszShimDB, dwFlagOpen);
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} __except(SHIM_EXCEPT_HANDLER) {
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pContext->pdbMain = NULL;
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}
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if (pContext->pdbMain == NULL) {
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DBGPRINT((sdlError, "SdbInitDatabaseEx", "Unable to open main database sysmain.sdb.\n"));
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goto errHandle;
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}
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if (dwFlags & HID_DATABASE_FULLPATH) {
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// we are done, no test db
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goto InitDone;
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}
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//
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// Now try to open the systest.sdb if it exists.
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//
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__try {
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if (NULL != pszDatabasePath) {
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int nLen;
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StringCchCopy(wszShimDB, CHARCOUNT(wszShimDB), pszDatabasePath);
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nLen = (int)_tcslen(wszShimDB);
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if (nLen > 0 && TEXT('\\') == wszShimDB[nLen-1]) {
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wszShimDB[nLen-1] = TEXT('\0');
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}
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} else { // standard database path
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if (dwFlags & HID_DOS_PATHS) {
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SdbpGetAppPatchDir((HSDB)pContext, wszShimDB, CHARCOUNT(wszShimDB));
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} else {
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if (uExeType == IMAGE_FILE_MACHINE_IA64) {
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StringCchCopy(wszShimDB,
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CHARCOUNT(wszShimDB),
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TEXT("\\SystemRoot\\AppPatch\\IA64"));
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} else {
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StringCchCopy(wszShimDB,
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CHARCOUNT(wszShimDB),
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TEXT("\\SystemRoot\\AppPatch"));
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}
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}
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}
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StringCchCat(wszShimDB, CHARCOUNT(wszShimDB), TEXT("\\systest.sdb"));
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pContext->pdbTest = SdbOpenDatabase(wszShimDB, dwFlagOpen);
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} __except(SHIM_EXCEPT_HANDLER) {
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pContext->pdbTest = NULL;
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}
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if (pContext->pdbTest == NULL) {
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DBGPRINT((sdlInfo, "SdbInitDatabaseEx", "No systest.sdb found.\n"));
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}
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InitDone:
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//
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// Initialize new members (local db support)
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//
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if (pContext->pdbMain) {
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pContext->rgSDB[0].pdb = pContext->pdbMain;
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pContext->rgSDB[0].dwFlags = SDBENTRY_VALID_ENTRY|SDBENTRY_VALID_GUID;
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RtlCopyMemory(&pContext->rgSDB[0].guidDB, &GUID_SYSMAIN_SDB, sizeof(GUID));
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SDBCUSTOM_SET_MASK(pContext, SDB_MASK_TO_INDEX(PDB_MAIN));
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}
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if (pContext->pdbTest) {
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pContext->rgSDB[1].pdb = pContext->pdbTest;
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pContext->rgSDB[1].dwFlags = SDBENTRY_VALID_ENTRY|SDBENTRY_VALID_GUID;
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RtlCopyMemory(&pContext->rgSDB[1].guidDB, &GUID_SYSTEST_SDB, sizeof(GUID));
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SDBCUSTOM_SET_MASK(pContext, SDB_MASK_TO_INDEX(PDB_TEST));
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}
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//
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// Initialize architecture
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//
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pContext->dwRuntimePlatform = SdbpGetProcessorArchitecture(uExeType);
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//
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// Initialize OS SKU and SP
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//
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SdbpGetOSSKU(&pContext->dwOSSKU, &pContext->dwSPMask);
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return (HSDB)pContext;
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errHandle:
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//
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// Cleanup on failure.
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//
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if (pContext != NULL) {
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if (pContext->pdbMain != NULL) {
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SdbCloseDatabaseRead(pContext->pdbMain);
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}
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if (pContext->pdbTest != NULL) {
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SdbCloseDatabaseRead(pContext->pdbTest);
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}
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SdbFree(pContext);
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}
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return NULL;
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}
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VOID
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SdbSetImageType(
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IN HSDB hSDB,
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IN USHORT uExeType
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)
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/*++
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This function is used to override default image type for the context
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Used by msi-related function in apphelp.dll
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|
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--*/
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{
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((PSDBCONTEXT)hSDB)->uExeType = uExeType;
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}
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|
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BOOL
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SdbpOpenAndMapFile(
|
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IN LPCTSTR szPath, // Filename
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OUT PIMAGEFILEDATA pImageData, // pointer to the structure to be filled
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IN PATH_TYPE ePathType // path type, only DOS_PATH is supported on win32
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)
|
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/*++
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Return: TRUE on success, FALSE otherwise.
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Desc: Opens a file and maps it into memory.
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--*/
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{
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HANDLE hFile;
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DWORD dwFlags = 0;
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|
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if (pImageData->dwFlags & IMAGEFILEDATA_PBASEVALID) {
|
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//
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// special case, only headers are valid in our assumption
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//
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return TRUE;
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}
|
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|
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if (pImageData->dwFlags & IMAGEFILEDATA_HANDLEVALID) {
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hFile = pImageData->hFile;
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dwFlags |= IMAGEFILEDATA_NOFILECLOSE;
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} else {
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hFile = SdbpOpenFile(szPath, ePathType);
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}
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|
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if (hFile == INVALID_HANDLE_VALUE) {
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return FALSE;
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}
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|
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if (!SdbpMapFile(hFile, pImageData)) {
|
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if (!(dwFlags & IMAGEFILEDATA_NOFILECLOSE)) {
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SdbpCloseFile(hFile);
|
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}
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return FALSE;
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}
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|
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pImageData->dwFlags = dwFlags;
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|
|
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return TRUE;
|
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}
|
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|
|
BOOL
|
|
SdbpUnmapAndCloseFile(
|
|
IN PIMAGEFILEDATA pImageData
|
|
)
|
|
/*++
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Return: BUGBUG: ?
|
|
|
|
Desc: BUGBUG: ?
|
|
--*/
|
|
{
|
|
HANDLE hFile;
|
|
BOOL bSuccess;
|
|
|
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if (pImageData->dwFlags & IMAGEFILEDATA_PBASEVALID) { // externally supplied pointer
|
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RtlZeroMemory(pImageData, sizeof(*pImageData));
|
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return TRUE;
|
|
}
|
|
|
|
hFile = pImageData->hFile;
|
|
|
|
bSuccess = SdbpUnmapFile(pImageData);
|
|
|
|
if (hFile != INVALID_HANDLE_VALUE) {
|
|
if (pImageData->dwFlags & IMAGEFILEDATA_NOFILECLOSE) {
|
|
pImageData->hFile = INVALID_HANDLE_VALUE;
|
|
} else {
|
|
SdbpCloseFile(hFile);
|
|
}
|
|
}
|
|
|
|
return bSuccess;
|
|
}
|
|
|
|
|
|
BOOL
|
|
SdbpCleanupLocalDatabaseSupport(
|
|
IN HSDB hSDB
|
|
)
|
|
{
|
|
PSDBCONTEXT pSdbContext = (PSDBCONTEXT)hSDB;
|
|
DWORD dwIndex;
|
|
DWORD dwMask;
|
|
|
|
//
|
|
// Ee start with entry 2 -- to include local sdbs
|
|
//
|
|
if (pSdbContext->dwDatabaseMask & SDB_CUSTOM_MASK) {
|
|
|
|
for (dwIndex = 3; dwIndex < ARRAYSIZE(pSdbContext->rgSDB); ++dwIndex) {
|
|
dwMask = 1 << dwIndex;
|
|
if (pSdbContext->dwDatabaseMask & dwMask) {
|
|
SdbCloseLocalDatabaseEx(hSDB, NULL, dwIndex);
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Always check for entry 2 (local sdb)
|
|
//
|
|
if (pSdbContext->pdbLocal != NULL) {
|
|
SdbCloseLocalDatabaseEx(hSDB, NULL, SDB_MASK_TO_INDEX(PDB_LOCAL));
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
BOOL
|
|
SdbpIsLocalTempPDB(
|
|
IN HSDB hSDB,
|
|
IN PDB pdb
|
|
)
|
|
{
|
|
PSDBENTRY pEntry = SDBGETLOCALENTRY(hSDB);
|
|
|
|
if (pEntry->dwFlags & SDBENTRY_VALID_ENTRY) {
|
|
return pdb == pEntry->pdb;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
BOOL
|
|
SdbpIsMainPDB(
|
|
IN HSDB hSDB,
|
|
IN PDB pdb
|
|
)
|
|
{
|
|
DWORD dwIndex;
|
|
|
|
if (!SdbpFindLocalDatabaseByPDB(hSDB, pdb, FALSE, &dwIndex)) {
|
|
return FALSE;
|
|
}
|
|
|
|
return (dwIndex == SDB_MASK_TO_INDEX(PDB_MAIN) || dwIndex == SDB_MASK_TO_INDEX(PDB_TEST));
|
|
}
|
|
|
|
BOOL
|
|
SdbpFindLocalDatabaseByPDB(
|
|
IN HSDB hSDB,
|
|
IN PDB pdb,
|
|
IN BOOL bExcludeLocalDB, // exclude local db entry?
|
|
OUT LPDWORD pdwIndex
|
|
)
|
|
{
|
|
PSDBCONTEXT pSdbContext = (PSDBCONTEXT)hSDB;
|
|
DWORD dwIndex;
|
|
PSDBENTRY pEntry;
|
|
BOOL bSuccess = FALSE;
|
|
|
|
for (dwIndex = 0; dwIndex < ARRAYSIZE(pSdbContext->rgSDB); ++dwIndex) {
|
|
|
|
if (bExcludeLocalDB && dwIndex == SDB_MASK_TO_INDEX(PDB_LOCAL)) {
|
|
continue;
|
|
}
|
|
|
|
if (!SDBCUSTOM_CHECK_INDEX(hSDB, dwIndex)) {
|
|
continue;
|
|
}
|
|
|
|
pEntry = &pSdbContext->rgSDB[dwIndex];
|
|
|
|
if ((pEntry->dwFlags & SDBENTRY_VALID_ENTRY) && (pdb == pEntry->pdb)) {
|
|
bSuccess = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (bSuccess && pdwIndex != NULL) {
|
|
*pdwIndex = dwIndex;
|
|
}
|
|
|
|
return bSuccess;
|
|
}
|
|
|
|
|
|
BOOL
|
|
SdbpFindLocalDatabaseByGUID(
|
|
IN HSDB hSDB,
|
|
IN GUID* pGuidDB,
|
|
IN BOOL bExcludeLocalDB,
|
|
OUT LPDWORD pdwIndex // this index (if valid) will work as an initial point for comparison
|
|
)
|
|
{
|
|
PSDBCONTEXT pSdbContext = (PSDBCONTEXT)hSDB;
|
|
PSDBENTRY pEntry;
|
|
DWORD dwIndex;
|
|
|
|
for (dwIndex = 0; dwIndex < ARRAYSIZE(pSdbContext->rgSDB); ++dwIndex) {
|
|
|
|
if (bExcludeLocalDB && dwIndex == SDB_MASK_TO_INDEX(PDB_LOCAL)) {
|
|
continue;
|
|
}
|
|
|
|
if (!SDBCUSTOM_CHECK_INDEX(hSDB, dwIndex)) {
|
|
continue;
|
|
}
|
|
|
|
pEntry = SDBGETENTRY(hSDB, dwIndex);
|
|
|
|
if (!(pEntry->dwFlags & SDBENTRY_VALID_GUID)) {
|
|
|
|
//
|
|
// if this happens to be a valid database -- get it's guid
|
|
//
|
|
if ((pEntry->dwFlags & SDBENTRY_VALID_ENTRY) && (pEntry->pdb != NULL)) {
|
|
|
|
//
|
|
// retrieve guid
|
|
//
|
|
GUID guidDB;
|
|
|
|
if (SdbGetDatabaseGUID(hSDB, pEntry->pdb, &guidDB)) {
|
|
pEntry->guidDB = guidDB;
|
|
pEntry->dwFlags |= SDBENTRY_VALID_GUID;
|
|
goto checkEntry;
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
checkEntry:
|
|
|
|
if (RtlEqualMemory(&pEntry->guidDB, pGuidDB, sizeof(GUID))) {
|
|
|
|
if (pdwIndex) {
|
|
*pdwIndex = dwIndex;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
DWORD
|
|
SdbpFindFreeLocalEntry(
|
|
IN HSDB hSDB
|
|
)
|
|
{
|
|
PSDBCONTEXT pSdbContext = (PSDBCONTEXT)hSDB;
|
|
DWORD dwIndex;
|
|
|
|
for (dwIndex = 3; dwIndex < ARRAYSIZE(pSdbContext->rgSDB); ++dwIndex) {
|
|
|
|
if (SDBCUSTOM_CHECK_INDEX(hSDB, dwIndex)) {
|
|
continue;
|
|
}
|
|
|
|
if (!(pSdbContext->rgSDB[dwIndex].dwFlags & (SDBENTRY_VALID_ENTRY | SDBENTRY_VALID_GUID))) {
|
|
return dwIndex;
|
|
}
|
|
}
|
|
|
|
//
|
|
// We have no entry
|
|
//
|
|
return SDBENTRY_INVALID_INDEX;
|
|
}
|
|
|
|
/*++
|
|
returns SDBENTRY_INVALID_INDEX if none could be found
|
|
|
|
if success, returns an index where the local db entry was found
|
|
--*/
|
|
|
|
DWORD
|
|
SdbpRetainLocalDBEntry(
|
|
IN HSDB hSDB,
|
|
OUT PDB* ppPDB OPTIONAL // optional pointer to the pdb
|
|
)
|
|
{
|
|
DWORD dwIndex = SDBENTRY_INVALID_INDEX;
|
|
PSDBCONTEXT pSdbContext = (PSDBCONTEXT)hSDB;
|
|
PSDBENTRY pEntry;
|
|
PSDBENTRY pEntryLocal = SDBGETLOCALENTRY(hSDB);
|
|
GUID guidDB;
|
|
|
|
if (pEntryLocal->pdb == NULL || !(pEntryLocal->dwFlags & SDBENTRY_VALID_ENTRY)) {
|
|
return SDBENTRY_INVALID_INDEX;
|
|
}
|
|
|
|
//
|
|
// Recycling could be done here so that we reuse custom db entries which
|
|
// may have been opened already (for instance set by __COMPAT_LAYER)
|
|
//
|
|
if (SdbGetDatabaseGUID(hSDB, pEntryLocal->pdb, &guidDB) &&
|
|
SdbpFindLocalDatabaseByGUID(hSDB, &guidDB, TRUE, &dwIndex) &&
|
|
dwIndex != SDBENTRY_INVALID_INDEX) {
|
|
|
|
//
|
|
// Close the local db
|
|
//
|
|
SdbCloseLocalDatabase(hSDB);
|
|
|
|
pEntry = SDBGETENTRY(hSDB, dwIndex);
|
|
|
|
pSdbContext->pdbLocal = pEntry->pdb;
|
|
|
|
if (ppPDB != NULL) {
|
|
*ppPDB = pEntry->pdb;
|
|
}
|
|
|
|
return dwIndex;
|
|
}
|
|
|
|
//
|
|
// An attempt to recycle has failed -- allocate new entry
|
|
//
|
|
dwIndex = SdbpFindFreeLocalEntry(hSDB);
|
|
if (dwIndex != SDBENTRY_INVALID_INDEX) {
|
|
//
|
|
// We have found an empty slot, relocate
|
|
//
|
|
pEntry = SDBGETENTRY(hSDB, dwIndex);
|
|
|
|
RtlCopyMemory(pEntry, pEntryLocal, sizeof(SDBENTRY));
|
|
RtlZeroMemory(pEntryLocal, sizeof(SDBENTRY));
|
|
|
|
SDBCUSTOM_SET_MASK(hSDB, dwIndex);
|
|
|
|
if (ppPDB != NULL) {
|
|
*ppPDB = pEntry->pdb;
|
|
}
|
|
|
|
//
|
|
// Note that pdbLocal is still valid, we never close this handle manually though
|
|
//
|
|
}
|
|
|
|
return dwIndex;
|
|
}
|
|
|
|
|
|
BOOL
|
|
SdbCloseLocalDatabaseEx(
|
|
IN HSDB hSDB,
|
|
IN PDB pdb,
|
|
IN DWORD dwIndex
|
|
)
|
|
{
|
|
PSDBCONTEXT pSdbContext = (PSDBCONTEXT)hSDB;
|
|
PSDBENTRY pEntry;
|
|
DWORD dwMask;
|
|
|
|
if (pdb != NULL) {
|
|
if (!SdbpFindLocalDatabaseByPDB(hSDB, pdb, FALSE, &dwIndex)) {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
dwMask = 1 << dwIndex;
|
|
|
|
if (dwIndex >= ARRAYSIZE(pSdbContext->rgSDB) || !(pSdbContext->dwDatabaseMask & dwMask)) {
|
|
return FALSE;
|
|
}
|
|
|
|
pEntry = &pSdbContext->rgSDB[dwIndex];
|
|
if (pEntry->dwFlags & SDBENTRY_VALID_ENTRY) {
|
|
if (pEntry->pdb) {
|
|
SdbCloseDatabaseRead(pEntry->pdb);
|
|
}
|
|
}
|
|
|
|
RtlZeroMemory(pEntry, sizeof(*pEntry));
|
|
|
|
SDBCUSTOM_CLEAR_MASK(hSDB, dwIndex);
|
|
|
|
if (dwIndex == SDB_MASK_TO_INDEX(PDB_LOCAL)) {
|
|
pSdbContext->pdbLocal = NULL;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
BOOL
|
|
SdbOpenLocalDatabaseEx(
|
|
IN HSDB hSDB,
|
|
IN LPCVOID pDatabaseID,
|
|
IN DWORD dwFlags,
|
|
OUT PDB* pPDB OPTIONAL,
|
|
IN OUT LPDWORD pdwLocalDBMask OPTIONAL // local db mask for tagref
|
|
)
|
|
{
|
|
PSDBCONTEXT pSdbContext = (PSDBCONTEXT)hSDB;
|
|
PDB pdb = NULL;
|
|
DWORD dwOpenFlags = DOS_PATH;
|
|
TCHAR szDatabasePath[MAX_PATH];
|
|
LPTSTR pszDatabasePath;
|
|
GUID guidDB;
|
|
GUID* pGuidDB;
|
|
DWORD dwDatabaseType = 0;
|
|
DWORD dwCount;
|
|
BOOL bSuccess = FALSE;
|
|
DWORD dwIndex;
|
|
TCHAR* pszIA64;
|
|
PSDBENTRY pEntry;
|
|
|
|
if (!(SDBCUSTOM_FLAGS(dwFlags) & SDBCUSTOM_USE_INDEX)) {
|
|
//
|
|
// Find free local sdb entry
|
|
//
|
|
dwIndex = SdbpFindFreeLocalEntry(hSDB);
|
|
|
|
if (dwIndex == SDBENTRY_INVALID_INDEX) {
|
|
DBGPRINT((sdlError,
|
|
"SdbOpenLocalDatabaseEx",
|
|
"No more free entries in local db table\n"));
|
|
goto cleanup;
|
|
}
|
|
|
|
pEntry = &pSdbContext->rgSDB[dwIndex];
|
|
|
|
} else {
|
|
dwIndex = *pdwLocalDBMask;
|
|
|
|
if (dwIndex & TAGREF_STRIP_PDB) {
|
|
dwIndex = SDB_MASK_TO_INDEX(dwIndex);
|
|
}
|
|
|
|
if (dwIndex >= ARRAYSIZE(pSdbContext->rgSDB)) {
|
|
DBGPRINT((sdlError,
|
|
"SdbOpenLocalDatabaseEx",
|
|
"Bad index 0x%lx\n",
|
|
dwIndex));
|
|
goto cleanup;
|
|
}
|
|
|
|
if (dwIndex < 2) {
|
|
DBGPRINT((sdlWarning,
|
|
"SdbOpenLocalDatabaseEx",
|
|
"Unusual use of SdbOpenLocalDatabaseEx index 0x%lx\n",
|
|
dwIndex));
|
|
}
|
|
|
|
pEntry = &pSdbContext->rgSDB[dwIndex];
|
|
|
|
SdbCloseLocalDatabaseEx(hSDB, NULL, dwIndex);
|
|
}
|
|
|
|
switch (SDBCUSTOM_TYPE(dwFlags)) {
|
|
case SDBCUSTOM_PATH:
|
|
if (SDBCUSTOM_PATH_NT & SDBCUSTOM_FLAGS(dwFlags)) {
|
|
dwOpenFlags = NT_PATH;
|
|
}
|
|
pszDatabasePath = (LPTSTR)pDatabaseID;
|
|
pGuidDB = NULL;
|
|
break;
|
|
|
|
case SDBCUSTOM_GUID:
|
|
if (SDBCUSTOM_GUID_STRING & SDBCUSTOM_FLAGS(dwFlags)) {
|
|
if (!SdbGUIDFromString((LPCTSTR)pDatabaseID, &guidDB)) {
|
|
|
|
DBGPRINT((sdlError,
|
|
"SdbOpenLocalDatabaseEx",
|
|
"Cannot convert \"%s\" to guid\n",
|
|
(LPCTSTR)pDatabaseID));
|
|
goto cleanup;
|
|
}
|
|
pGuidDB = &guidDB;
|
|
} else {
|
|
pGuidDB = (GUID*)pDatabaseID;
|
|
}
|
|
|
|
dwCount = SdbResolveDatabase(hSDB,
|
|
pGuidDB,
|
|
&dwDatabaseType,
|
|
szDatabasePath,
|
|
CHARCOUNT(szDatabasePath));
|
|
if (dwCount == 0 || dwCount >= CHARCOUNT(szDatabasePath)) {
|
|
DBGPRINT((sdlError,
|
|
"SdbOpenLocalDatabaseEx",
|
|
"Cannot resolve database, the path length is 0x%lx\n",
|
|
dwCount));
|
|
goto cleanup;
|
|
}
|
|
|
|
//
|
|
// Verify the executable's type
|
|
//
|
|
_tcsupr(szDatabasePath);
|
|
|
|
//
|
|
// when image type is set to IMAGE_FILE_MSI we assume that any kind of database path
|
|
// is acceptable since we do search both 32-bit and 64-bit database for shims
|
|
//
|
|
|
|
if (pSdbContext->uExeType != IMAGE_FILE_MSI) {
|
|
|
|
pszIA64 = _tcsstr(szDatabasePath, _T("\\IA64\\"));
|
|
|
|
if ((pszIA64 == NULL && pSdbContext->uExeType == IMAGE_FILE_MACHINE_IA64) ||
|
|
(pszIA64 != NULL && pSdbContext->uExeType == IMAGE_FILE_MACHINE_I386)) {
|
|
|
|
DBGPRINT((sdlWarning,
|
|
"SdbOpenLocalDatabaseEx",
|
|
"Database \"%s\" is not of the same type as the main EXE\n",
|
|
szDatabasePath));
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
pszDatabasePath = szDatabasePath;
|
|
break;
|
|
|
|
default:
|
|
DBGPRINT((sdlError, "SdbOpenLocalDatabaseEx", "Bad flags 0x%lx\n", dwFlags));
|
|
goto cleanup;
|
|
break;
|
|
}
|
|
|
|
pdb = SdbOpenDatabase(pszDatabasePath, dwOpenFlags);
|
|
if (pdb == NULL) {
|
|
//
|
|
// dbgprint not needed here
|
|
//
|
|
goto cleanup;
|
|
}
|
|
|
|
pSdbContext->rgSDB[dwIndex].pdb = pdb;
|
|
pSdbContext->rgSDB[dwIndex].dwFlags = SDBENTRY_VALID_ENTRY;
|
|
|
|
SDBCUSTOM_SET_MASK(pSdbContext, dwIndex);
|
|
|
|
if (pGuidDB != NULL) {
|
|
RtlCopyMemory(&pSdbContext->rgSDB[dwIndex].guidDB, pGuidDB, sizeof(GUID));
|
|
pSdbContext->rgSDB[dwIndex].dwFlags |= SDBENTRY_VALID_GUID;
|
|
} else {
|
|
RtlZeroMemory(&pSdbContext->rgSDB[dwIndex].guidDB, sizeof(GUID));
|
|
}
|
|
|
|
bSuccess = TRUE;
|
|
|
|
cleanup:
|
|
|
|
if (bSuccess) {
|
|
if (dwIndex == SDB_MASK_TO_INDEX(PDB_LOCAL)) {
|
|
pSdbContext->pdbLocal = pdb;
|
|
}
|
|
|
|
if (pdwLocalDBMask != NULL) {
|
|
*pdwLocalDBMask = SDB_INDEX_TO_MASK(dwIndex);
|
|
}
|
|
|
|
if (pPDB != NULL) {
|
|
*pPDB = pdb;
|
|
}
|
|
}
|
|
|
|
return bSuccess;
|
|
}
|
|
|
|
|
|
BOOL
|
|
SdbOpenLocalDatabase(
|
|
IN HSDB hSDB, // handle to the database channel
|
|
IN LPCTSTR pszLocalDatabase // full DOS path to the local database to open.
|
|
)
|
|
/*++
|
|
Return: TRUE on success, FALSE otherwise.
|
|
|
|
Desc: Opens a local database.
|
|
--*/
|
|
{
|
|
|
|
DWORD dwIndex = PDB_LOCAL;
|
|
BOOL bSuccess;
|
|
|
|
bSuccess = SdbOpenLocalDatabaseEx(hSDB,
|
|
pszLocalDatabase,
|
|
(SDBCUSTOM_PATH_DOS | SDBCUSTOM_USE_INDEX),
|
|
NULL,
|
|
&dwIndex);
|
|
return bSuccess;
|
|
}
|
|
|
|
BOOL
|
|
SdbCloseLocalDatabase(
|
|
IN HSDB hSDB // handle to the database channel
|
|
)
|
|
/*++
|
|
Return: TRUE on success, FALSE otherwise.
|
|
|
|
Desc: Closes the local database.
|
|
--*/
|
|
{
|
|
return SdbCloseLocalDatabaseEx(hSDB, NULL, SDB_MASK_TO_INDEX(PDB_LOCAL));
|
|
}
|
|
|
|
|
|
TAGREF
|
|
SdbGetItemFromItemRef(
|
|
IN HSDB hSDB, // handle to the database channel
|
|
IN TAGREF trItemRef, // TAGREF of a DLL_REF record
|
|
IN TAG tagItemKey, // key that has the name of the item (TAG_NAME)
|
|
IN TAG tagItemTAGID, // tag that points to the location of the desired item by it's tagid
|
|
IN TAG tagItem // what to look for under Library
|
|
)
|
|
/*++
|
|
Return: TAGREF of a DLL record that matches the DLL_REF.
|
|
|
|
Desc: Given a TAGREF that points to a *tag*_REF type tag, searches through
|
|
the various databases for the matching tag (generally located
|
|
under the LIBRARY tag in gpdbMain).
|
|
|
|
if bAllowNonMain is specified then the library section is looked up
|
|
in the same database where trItemRef was found. This is used with
|
|
MSI transforms - to locate and extract them from custom databases.
|
|
This flag IS NOT used for other components - such as patches and
|
|
shim dlls. This is ensured through the macros -
|
|
SdbGetShimFromShimRef(hSDB, trShimRef)
|
|
and
|
|
SdbGetPatchFromPatchRef(hSDB, trPatchRef)
|
|
Both of these macros call this function with bAllowNonMain set to FALSE
|
|
--*/
|
|
{
|
|
PSDBCONTEXT pDbContext = (PSDBCONTEXT)hSDB;
|
|
TAGID tiItemRef = TAGID_NULL;
|
|
PDB pdbItemRef = NULL;
|
|
TAGREF trReturn = TAGREF_NULL;
|
|
TAGID tiReturn = TAGID_NULL;
|
|
TAGID tiDatabase = TAGID_NULL;
|
|
TAGID tiLibrary = TAGID_NULL;
|
|
TAGID tiItemTagID = TAGID_NULL;
|
|
TAGID tiItemName;
|
|
LPTSTR szItemName = NULL;
|
|
|
|
try {
|
|
//
|
|
// Find first which database contains the reference TAGREF.
|
|
//
|
|
if (!SdbTagRefToTagID(pDbContext, trItemRef, &pdbItemRef, &tiItemRef)){
|
|
DBGPRINT((sdlError, "SdbGetItemFromItemRef", "Can't convert tag ref.\n"));
|
|
goto out;
|
|
}
|
|
|
|
//
|
|
// First check if there's a TAG_item_TAGID that tells us exactly
|
|
// where the item is within the current database.
|
|
//
|
|
tiItemTagID = SdbFindFirstTag(pdbItemRef, tiItemRef, tagItemTAGID);
|
|
|
|
if (tiItemTagID != TAGID_NULL) {
|
|
|
|
tiReturn = (TAGID)SdbReadDWORDTag(pdbItemRef, tiItemTagID, 0);
|
|
|
|
if (tiReturn != TAGID_NULL) {
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (pdbItemRef == pDbContext->pdbMain) {
|
|
goto checkMainDatabase;
|
|
}
|
|
|
|
//
|
|
// Then check for the item in the LIBRARY section of the
|
|
// current database.
|
|
//
|
|
tiDatabase = SdbFindFirstTag(pdbItemRef, TAGID_ROOT, TAG_DATABASE);
|
|
if (!tiDatabase) {
|
|
DBGPRINT((sdlError,
|
|
"SdbGetItemFromItemRef",
|
|
"Can't find DATABASE tag in db.\n"));
|
|
goto checkMainDatabase;
|
|
}
|
|
|
|
tiLibrary = SdbFindFirstTag(pdbItemRef, tiDatabase, TAG_LIBRARY);
|
|
if (!tiLibrary) {
|
|
//
|
|
// This library doesn't have a LIBRARY section. That's ok, go check
|
|
// sysmain.sdb.
|
|
//
|
|
goto checkMainDatabase;
|
|
}
|
|
|
|
//
|
|
// We need to search by name.
|
|
//
|
|
tiItemName = SdbFindFirstTag(pdbItemRef, tiItemRef, tagItemKey);
|
|
if (!tiItemName) {
|
|
goto out;
|
|
}
|
|
|
|
szItemName = SdbGetStringTagPtr(pdbItemRef, tiItemName);
|
|
if (!szItemName) {
|
|
goto out;
|
|
}
|
|
|
|
tiReturn = SdbFindFirstNamedTag(pdbItemRef,
|
|
tiLibrary,
|
|
tagItem,
|
|
tagItemKey,
|
|
szItemName);
|
|
|
|
if (tiReturn != TAGID_NULL) {
|
|
goto out;
|
|
}
|
|
|
|
checkMainDatabase:
|
|
|
|
tiDatabase = SdbFindFirstTag(pDbContext->pdbMain, TAGID_ROOT, TAG_DATABASE);
|
|
if (!tiDatabase) {
|
|
DBGPRINT((sdlError,
|
|
"SdbGetItemFromItemRef",
|
|
"Can't find DATABASE tag in main db.\n"));
|
|
goto out;
|
|
}
|
|
|
|
tiLibrary = SdbFindFirstTag(pDbContext->pdbMain, tiDatabase, TAG_LIBRARY);
|
|
if (!tiLibrary) {
|
|
DBGPRINT((sdlError,
|
|
"SdbGetItemFromItemRef",
|
|
"Can't find LIBRARY tag in main db.\n"));
|
|
goto out;
|
|
}
|
|
|
|
//
|
|
// We need to search by name.
|
|
//
|
|
if (szItemName == NULL) {
|
|
tiItemName = SdbFindFirstTag(pdbItemRef, tiItemRef, tagItemKey);
|
|
if (!tiItemName) {
|
|
goto out;
|
|
}
|
|
|
|
szItemName = SdbGetStringTagPtr(pdbItemRef, tiItemName);
|
|
if (!szItemName) {
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
tiReturn = SdbFindFirstNamedTag(pDbContext->pdbMain,
|
|
tiLibrary,
|
|
tagItem,
|
|
tagItemKey,
|
|
szItemName);
|
|
|
|
pdbItemRef = pDbContext->pdbMain;
|
|
|
|
} except (SHIM_EXCEPT_HANDLER) {
|
|
tiReturn = TAGID_NULL;
|
|
trReturn = TAGREF_NULL;
|
|
}
|
|
|
|
out:
|
|
|
|
if (tiReturn) {
|
|
assert(pdbItemRef != NULL);
|
|
if (!SdbTagIDToTagRef(pDbContext, pdbItemRef, tiReturn, &trReturn)) {
|
|
trReturn = TAGREF_NULL;
|
|
}
|
|
}
|
|
|
|
if (trReturn == TAGREF_NULL) {
|
|
DBGPRINT((sdlError,
|
|
"SdbGetItemFromItemRef",
|
|
"Can't find tag for tag ref 0x%x.\n", trItemRef));
|
|
}
|
|
|
|
return trReturn;
|
|
}
|
|
|
|
|
|
TAGID
|
|
SdbpGetLibraryFile(
|
|
IN PDB pdb, // handle to the database channel
|
|
IN LPCTSTR szDllName // the name of the DLL
|
|
)
|
|
/*++
|
|
Return: The TAGID of the DLL used by the specified shim.
|
|
|
|
Desc: This function gets the TAGID of the DLL with the specified name.
|
|
--*/
|
|
{
|
|
TAGID tiDatabase;
|
|
TAGID tiLibrary;
|
|
TAGID tiDll = TAG_NULL;
|
|
|
|
tiDatabase = SdbFindFirstTag(pdb, TAGID_ROOT, TAG_DATABASE);
|
|
|
|
if (!tiDatabase) {
|
|
DBGPRINT((sdlError, "SdbpGetLibraryFile", "Can't find DATABASE tag in main db.\n"));
|
|
goto out;
|
|
}
|
|
|
|
tiLibrary = SdbFindFirstTag(pdb, tiDatabase, TAG_LIBRARY);
|
|
|
|
if (!tiLibrary) {
|
|
DBGPRINT((sdlError, "SdbpGetLibraryFile", "Can't find LIBRARY tag in main db.\n"));
|
|
goto out;
|
|
}
|
|
|
|
tiDll = SdbFindFirstNamedTag(pdb, tiLibrary, TAG_FILE, TAG_NAME, szDllName);
|
|
|
|
if (!tiDll) {
|
|
DBGPRINT((sdlError,
|
|
"SdbpGetLibraryFile", "Can't find FILE \"%s\" in main db library.\n",
|
|
szDllName));
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
|
|
return tiDll;
|
|
}
|
|
|
|
BOOL
|
|
SdbGetDllPath(
|
|
IN HSDB hSDB, // handle to the database channel
|
|
IN TAGREF trShimRef, // SHIM_REF to use to search for the DLL
|
|
OUT LPTSTR pwszBuffer, // Buffer to fill with the path to the DLL containing
|
|
// the specified shim.
|
|
IN DWORD cchBufferSize // Size of the buffer (in characters)
|
|
)
|
|
/*++
|
|
Return: TRUE if the DLL was found, FALSE otherwise.
|
|
|
|
Desc: Hunts for the DLL file on disk, first in the same
|
|
directory as the EXE (if there was a local database opened), then
|
|
in the %windir%\AppPatch directory.
|
|
Always fills in a DOS_PATH type path (UNC or 'x:').
|
|
--*/
|
|
{
|
|
BOOL bReturn = FALSE;
|
|
HANDLE hFile = INVALID_HANDLE_VALUE;
|
|
PBYTE pBuffer = NULL;
|
|
TAGREF trShim;
|
|
TAGREF trName;
|
|
TCHAR szFile[2 * MAX_PATH];
|
|
TCHAR szName[MAX_PATH];
|
|
|
|
assert(pwszBuffer);
|
|
|
|
try {
|
|
|
|
//
|
|
// Initialize the return buffer.
|
|
//
|
|
pwszBuffer[0] = _T('\0');
|
|
|
|
SdbpGetAppPatchDir(hSDB, szFile, CHARCOUNT(szFile));
|
|
|
|
StringCchCat(szFile, CHARCOUNT(szFile), _T("\\"));
|
|
|
|
//
|
|
// Look for the SHIM record in the LIBRARY section.
|
|
//
|
|
|
|
|
|
trShim = SdbGetShimFromShimRef(hSDB, trShimRef);
|
|
|
|
if (trShim == TAGREF_NULL) {
|
|
|
|
//
|
|
// No SHIM in LIBRARY. Error out.
|
|
//
|
|
DBGPRINT((sdlError, "SdbGetDllPath", "No SHIM in LIBRARY.\n"));
|
|
goto out;
|
|
}
|
|
|
|
//
|
|
// Get the name of the file that contains this shim.
|
|
//
|
|
trName = SdbFindFirstTagRef(hSDB, trShim, TAG_DLLFILE);
|
|
if (trName == TAGREF_NULL) {
|
|
//
|
|
// Nope, and we need one. Error out.
|
|
//
|
|
DBGPRINT((sdlError, "SdbGetDllPath", "No DLLFILE for the SHIM in LIBRARY.\n"));
|
|
goto out;
|
|
}
|
|
|
|
if (!SdbReadStringTagRef(hSDB, trName, szName, MAX_PATH)) {
|
|
DBGPRINT((sdlError, "SdbGetDllPath", "Can't read DLL name.\n"));
|
|
goto out;
|
|
}
|
|
|
|
//
|
|
// Check if the file is already on the disk.
|
|
// Look in %windir%\AppPatch directory for the DLL.
|
|
//
|
|
|
|
StringCchCat(szFile, CHARCOUNT(szFile), szName);
|
|
StringCchCopy(pwszBuffer, cchBufferSize, szFile);
|
|
|
|
DBGPRINT((sdlInfo, "SdbGetDllPath", "Opening file \"%s\".\n", szFile));
|
|
|
|
hFile = SdbpOpenFile(szFile, DOS_PATH);
|
|
|
|
if (hFile != INVALID_HANDLE_VALUE) {
|
|
bReturn = TRUE;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
;
|
|
|
|
} except (SHIM_EXCEPT_HANDLER) {
|
|
bReturn = FALSE;
|
|
}
|
|
|
|
if (hFile != INVALID_HANDLE_VALUE) {
|
|
SdbpCloseFile(hFile);
|
|
}
|
|
|
|
if (pBuffer != NULL) {
|
|
SdbFree(pBuffer);
|
|
}
|
|
|
|
if (bReturn) {
|
|
DBGPRINT((sdlInfo, "SdbGetDllPath", "Using DLL \"%s\".\n", szFile));
|
|
}
|
|
|
|
return bReturn;
|
|
}
|
|
|
|
BOOL
|
|
SdbReadPatchBits(
|
|
IN HSDB hSDB, // handle to the database channel
|
|
IN TAGREF trPatchRef, // PATCH_REF to use to find the PATCH
|
|
OUT PVOID pBuffer, // buffer to fill with bits
|
|
OUT LPDWORD lpdwBufferSize // size of passed-in buffer
|
|
)
|
|
/*++
|
|
Return: Returns TRUE on success, FALSE on failure.
|
|
|
|
Desc: Looks for the patch, first on disk, then in the DB, and fills
|
|
pBuffer with the bits. If the size specified in lpdwBufferSize is
|
|
less than the size of the patch this function will return in
|
|
lpdwBufferSize the size required. In that case pBuffer is ignored
|
|
and can be NULL.
|
|
--*/
|
|
{
|
|
BOOL bReturn = FALSE;
|
|
TAGID tiPatchRef = TAGID_NULL;
|
|
PDB pdb = NULL;
|
|
LPTSTR szName = NULL;
|
|
TAGREF trPatch = TAGREF_NULL;
|
|
TAGREF trPatchBits = TAGREF_NULL;
|
|
TAGID tiName = TAGID_NULL;
|
|
DWORD dwSize;
|
|
|
|
try {
|
|
if (!SdbTagRefToTagID(hSDB, trPatchRef, &pdb, &tiPatchRef)) {
|
|
DBGPRINT((sdlError, "SdbReadPatchBits", "Can't convert tag ref.\n"));
|
|
goto out;
|
|
}
|
|
|
|
tiName = SdbFindFirstTag(pdb, tiPatchRef, TAG_NAME);
|
|
if (!tiName) {
|
|
DBGPRINT((sdlError, "SdbReadPatchBits", "Can't find the name tag.\n"));
|
|
goto out;
|
|
}
|
|
|
|
szName = SdbGetStringTagPtr(pdb, tiName);
|
|
if (!szName) {
|
|
DBGPRINT((sdlError, "SdbReadPatchBits", "Can't read the name of the patch.\n"));
|
|
goto out;
|
|
}
|
|
|
|
//
|
|
// Look in the main database for the patch bits.
|
|
//
|
|
trPatch = SdbGetPatchFromPatchRef(hSDB, trPatchRef);
|
|
if (!trPatch) {
|
|
DBGPRINT((sdlError, "SdbReadPatchBits", "Can't get the patch tag.\n"));
|
|
goto out;
|
|
}
|
|
|
|
trPatchBits = SdbFindFirstTagRef(hSDB, trPatch, TAG_PATCH_BITS);
|
|
if (!trPatchBits) {
|
|
DBGPRINT((sdlError, "SdbReadPatchBits", "Can't get the patch bits tag.\n"));
|
|
goto out;
|
|
}
|
|
|
|
dwSize = SdbpGetTagRefDataSize(hSDB, trPatchBits);
|
|
|
|
if (dwSize == 0) {
|
|
DBGPRINT((sdlError, "SdbReadPatchBits", "Corrupt database. Zero sized patch.\n"));
|
|
goto out;
|
|
}
|
|
|
|
//
|
|
// Check for buffer size.
|
|
//
|
|
if (dwSize > *lpdwBufferSize) {
|
|
*lpdwBufferSize = dwSize;
|
|
goto out;
|
|
}
|
|
|
|
//
|
|
// Read the bits if the buffer is big enough.
|
|
//
|
|
*lpdwBufferSize = dwSize;
|
|
|
|
if (!SdbpReadBinaryTagRef(hSDB, trPatchBits, pBuffer, dwSize)) {
|
|
DBGPRINT((sdlError, "SdbReadPatchBits", "Cannot get the patch bits.\n"));
|
|
goto out;
|
|
}
|
|
|
|
bReturn = TRUE;
|
|
|
|
} except (SHIM_EXCEPT_HANDLER) {
|
|
bReturn = FALSE;
|
|
}
|
|
|
|
out:
|
|
return bReturn;
|
|
}
|
|
|
|
|