639 lines
15 KiB
C++
639 lines
15 KiB
C++
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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ForceCDStop.cpp
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Abstract:
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This shim is used to fix the problem of contention with the CD Drive.
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Some applications try and access the CD even if they are in the middle of
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playing a movie or sound via MCI. Note that this shim assumes the app
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is running off of a single CDRom drive at a time.
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Notes:
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This is a general purpose shim.
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History:
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04/10/2000 linstev Created
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04/12/2000 a-michni Added _hread, ReadFile and _lseek capability.
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04/28/2000 a-michni changed logic to check for IsACDRom before
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checking for a bad handle, this way CD letter
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is set for those routines which only have a
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handle and no way of finding the drive letter.
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05/30/2000 a-chcoff Changed logic to do a cd stop only if error was device busy..
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we were checking every failed access and plane crazy was making
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lots of calls that would fail as file not found. as such the cd was
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getting stopped when it did not need to be, causing a CD not found.
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This shim should be changed to a faster model. maybe later..
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(ForceCDStop)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(FindFirstFileA)
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APIHOOK_ENUM_ENTRY(FindFirstFileW)
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APIHOOK_ENUM_ENTRY(FindFirstFileExA)
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APIHOOK_ENUM_ENTRY(FindFirstFileExW)
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APIHOOK_ENUM_ENTRY(CreateFileA)
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APIHOOK_ENUM_ENTRY(CreateFileW)
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APIHOOK_ENUM_ENTRY(ReadFile)
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APIHOOK_ENUM_ENTRY(_hread)
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APIHOOK_ENUM_ENTRY(_lseek)
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APIHOOK_ENUM_END
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// Include these so we can get to the IOCTLs
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#include <devioctl.h>
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#include <ntddcdrm.h>
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//
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// We have to store the first opened CD drive, so that if ReadFile fails, we
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// know which drive to stop. Note, we don't need to protect this variable with
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// a critical section, since it's basically atomic.
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//
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WCHAR g_wLastCDDrive = L'\0';
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/*++
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Initialize the global CD letter variable if required.
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--*/
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VOID
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InitializeCDA(
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LPSTR lpFileName
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)
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{
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CHAR cDrive;
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if (!g_wLastCDDrive) {
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if (GetDriveTypeFromFileNameA(lpFileName, &cDrive) == DRIVE_CDROM) {
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g_wLastCDDrive = (WCHAR)cDrive;
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}
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}
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}
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/*++
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Initialize the global CD letter variable if required.
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--*/
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VOID
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InitializeCDW(
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LPWSTR lpFileName
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)
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{
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WCHAR wDrive;
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if (!g_wLastCDDrive) {
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if (GetDriveTypeFromFileNameW(lpFileName, &wDrive) == DRIVE_CDROM) {
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g_wLastCDDrive = wDrive;
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}
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}
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}
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/*++
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Send a STOP IOCTL to the specified drive.
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--*/
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BOOL
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StopDrive(
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WCHAR wDrive
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)
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{
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BOOL bRet = FALSE;
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HANDLE hDrive;
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WCHAR wzCDROM[7] = L"\\\\.\\C:";
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wzCDROM[4] = wDrive;
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hDrive = CreateFileW(wzCDROM,
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL,
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NULL);
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if (hDrive != INVALID_HANDLE_VALUE) {
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DWORD dwBytesRead;
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// Attempt to stop the audio
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bRet = DeviceIoControl(hDrive,
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IOCTL_CDROM_STOP_AUDIO,
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NULL,
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0,
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NULL,
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0,
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&dwBytesRead,
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NULL);
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CloseHandle(hDrive);
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if (bRet) {
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DPFN( eDbgLevelInfo,
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"[StopDrive] Successfully stopped drive.\n");
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} else {
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DPFN( eDbgLevelError,
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"[StopDrive] Failed to stop drive. Error %d.\n", GetLastError());
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}
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} else {
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DPFN( eDbgLevelError,
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"[StopDrive] Unable to create cd device handle. %S Error %d.\n",
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wzCDROM, GetLastError());
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}
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return bRet;
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}
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/*++
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Attempts to stop the CD if filename is a file on a CDROM drive.
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Returns true on a successful stop.
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--*/
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BOOL
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StopCDA(
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LPCSTR lpFileName
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)
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{
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CHAR c;
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if (GetDriveTypeFromFileNameA(lpFileName, &c) == DRIVE_CDROM) {
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return StopDrive((WCHAR)c);
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} else {
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return FALSE;
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}
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}
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/*++
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Attempts to stop the CD if filename is a file on a CDROM drive.
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Returns true on a successful stop.
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--*/
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BOOL
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StopCDW(
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LPCWSTR lpFileName
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)
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{
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WCHAR w;
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if (GetDriveTypeFromFileNameW(lpFileName, &w) == DRIVE_CDROM) {
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return StopDrive(w);
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} else {
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return FALSE;
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}
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}
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/*++
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Attempts to stop the CD on the last opened CDROM Drive.
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Returns true on a successful stop.
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--*/
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BOOL
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StopCDH(
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HANDLE hFile
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)
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{
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if (g_wLastCDDrive) {
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return StopDrive(g_wLastCDDrive);
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} else {
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return FALSE;
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}
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}
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/*++
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Check for CD file.
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--*/
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HANDLE
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APIHOOK(FindFirstFileA)(
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LPCSTR lpFileName,
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LPWIN32_FIND_DATAA lpFindFileData
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)
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{
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HANDLE hRet = ORIGINAL_API(FindFirstFileA)(lpFileName, lpFindFileData);
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if ((hRet == INVALID_HANDLE_VALUE) && (ERROR_BUSY == GetLastError())) {
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StopCDA(lpFileName);
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hRet = ORIGINAL_API(FindFirstFileA)(lpFileName, lpFindFileData);
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if (hRet == INVALID_HANDLE_VALUE) {
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DPFN( eDbgLevelWarning,
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"[FindFirstFileA] failure \"%s\" Error %d.\n",
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lpFileName, GetLastError());
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} else {
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LOGN(
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eDbgLevelInfo,
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"[FindFirstFileA] Success after CD stop: \"%s\".", lpFileName);
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}
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}
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return hRet;
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}
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/*++
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Check for CD file.
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--*/
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HANDLE
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APIHOOK(FindFirstFileW)(
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LPCWSTR lpFileName,
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LPWIN32_FIND_DATAW lpFindFileData
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)
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{
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HANDLE hRet = ORIGINAL_API(FindFirstFileW)(lpFileName, lpFindFileData);
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if ((hRet == INVALID_HANDLE_VALUE) && (ERROR_BUSY == GetLastError())) {
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StopCDW(lpFileName);
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hRet = ORIGINAL_API(FindFirstFileW)(lpFileName, lpFindFileData);
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if (hRet == INVALID_HANDLE_VALUE) {
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DPFN( eDbgLevelWarning,
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"[FindFirstFileW] failure \"%S\" Error %d.\n",
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lpFileName, GetLastError());
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} else {
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LOGN(
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eDbgLevelInfo,
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"[FindFirstFileW] Success after CD stop: \"%S\".", lpFileName);
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}
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}
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return hRet;
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}
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/*++
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Check for CD file.
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--*/
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HANDLE
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APIHOOK(FindFirstFileExA)(
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LPCSTR lpFileName,
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FINDEX_INFO_LEVELS fInfoLevelId,
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LPVOID lpFindFileData,
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FINDEX_SEARCH_OPS fSearchOp,
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LPVOID lpSearchFilter,
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DWORD dwAdditionalFlags
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)
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{
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HANDLE hRet = ORIGINAL_API(FindFirstFileExA)(
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lpFileName,
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fInfoLevelId,
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lpFindFileData,
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fSearchOp,
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lpSearchFilter,
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dwAdditionalFlags);
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if ((hRet == INVALID_HANDLE_VALUE) && (ERROR_BUSY == GetLastError())) {
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StopCDA(lpFileName);
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hRet = ORIGINAL_API(FindFirstFileExA)(
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lpFileName,
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fInfoLevelId,
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lpFindFileData,
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fSearchOp,
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lpSearchFilter,
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dwAdditionalFlags);
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if (hRet == INVALID_HANDLE_VALUE) {
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DPFN( eDbgLevelWarning,
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"[FindFirstFileExA] failure \"%s\" Error %d.\n",
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lpFileName, GetLastError());
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} else {
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LOGN(
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eDbgLevelInfo,
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"[FindFirstFileExA] Success after CD stop: \"%s\".", lpFileName);
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}
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}
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return hRet;
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}
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/*++
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Check for CD file.
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--*/
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HANDLE
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APIHOOK(FindFirstFileExW)(
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LPCWSTR lpFileName,
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FINDEX_INFO_LEVELS fInfoLevelId,
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LPVOID lpFindFileData,
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FINDEX_SEARCH_OPS fSearchOp,
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LPVOID lpSearchFilter,
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DWORD dwAdditionalFlags
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)
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{
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HANDLE hRet = ORIGINAL_API(FindFirstFileExW)(
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lpFileName,
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fInfoLevelId,
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lpFindFileData,
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fSearchOp,
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lpSearchFilter,
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dwAdditionalFlags);
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if ((hRet == INVALID_HANDLE_VALUE) && (ERROR_BUSY == GetLastError())) {
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StopCDW(lpFileName);
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hRet = ORIGINAL_API(FindFirstFileExW)(
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lpFileName,
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fInfoLevelId,
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lpFindFileData,
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fSearchOp,
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lpSearchFilter,
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dwAdditionalFlags);
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if (hRet == INVALID_HANDLE_VALUE) {
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DPFN( eDbgLevelWarning,
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"[FindFirstFileExW] failure \"%S\" Error %d.\n",
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lpFileName, GetLastError());
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} else {
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LOGN(
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eDbgLevelInfo,
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"[FindFirstFileExW] Success after CD stop: \"%S\".", lpFileName);
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}
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}
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return hRet;
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}
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/*++
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Check for CD file.
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--*/
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HANDLE
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APIHOOK(CreateFileA)(
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LPSTR lpFileName,
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DWORD dwDesiredAccess,
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DWORD dwShareMode,
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LPSECURITY_ATTRIBUTES lpSecurityAttributes,
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DWORD dwCreationDisposition,
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DWORD dwFlagsAndAttributes,
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HANDLE hTemplateFile
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)
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{
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HANDLE hRet = ORIGINAL_API(CreateFileA)(
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lpFileName,
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dwDesiredAccess,
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dwShareMode,
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lpSecurityAttributes,
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dwCreationDisposition,
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dwFlagsAndAttributes,
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hTemplateFile);
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InitializeCDA(lpFileName);
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if ((INVALID_HANDLE_VALUE == hRet) && (ERROR_BUSY == GetLastError())) {
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StopCDA(lpFileName);
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hRet = ORIGINAL_API(CreateFileA)(
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lpFileName,
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dwDesiredAccess,
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dwShareMode,
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lpSecurityAttributes,
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dwCreationDisposition,
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dwFlagsAndAttributes,
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|
hTemplateFile);
|
||
|
|
|
||
|
|
if (hRet == INVALID_HANDLE_VALUE) {
|
||
|
|
DPFN( eDbgLevelWarning,
|
||
|
|
"[CreateFileA] failure \"%s\" Error %d.\n",
|
||
|
|
lpFileName, GetLastError());
|
||
|
|
} else {
|
||
|
|
LOGN(
|
||
|
|
eDbgLevelInfo,
|
||
|
|
"[CreateFileA] Success after CD stop: \"%s\".", lpFileName);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return hRet;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Check for CD file.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
HANDLE
|
||
|
|
APIHOOK(CreateFileW)(
|
||
|
|
LPWSTR lpFileName,
|
||
|
|
DWORD dwDesiredAccess,
|
||
|
|
DWORD dwShareMode,
|
||
|
|
LPSECURITY_ATTRIBUTES lpSecurityAttributes,
|
||
|
|
DWORD dwCreationDisposition,
|
||
|
|
DWORD dwFlagsAndAttributes,
|
||
|
|
HANDLE hTemplateFile
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HANDLE hRet = ORIGINAL_API(CreateFileW)(
|
||
|
|
lpFileName,
|
||
|
|
dwDesiredAccess,
|
||
|
|
dwShareMode,
|
||
|
|
lpSecurityAttributes,
|
||
|
|
dwCreationDisposition,
|
||
|
|
dwFlagsAndAttributes,
|
||
|
|
hTemplateFile);
|
||
|
|
|
||
|
|
InitializeCDW(lpFileName);
|
||
|
|
|
||
|
|
if ((INVALID_HANDLE_VALUE == hRet) && (ERROR_BUSY == GetLastError())) {
|
||
|
|
StopCDW(lpFileName);
|
||
|
|
|
||
|
|
hRet = ORIGINAL_API(CreateFileW)(
|
||
|
|
lpFileName,
|
||
|
|
dwDesiredAccess,
|
||
|
|
dwShareMode,
|
||
|
|
lpSecurityAttributes,
|
||
|
|
dwCreationDisposition,
|
||
|
|
dwFlagsAndAttributes,
|
||
|
|
hTemplateFile);
|
||
|
|
|
||
|
|
if (hRet == INVALID_HANDLE_VALUE) {
|
||
|
|
DPFN( eDbgLevelWarning,
|
||
|
|
"[CreateFileW] failure \"%S\" Error %d.\n",
|
||
|
|
lpFileName, GetLastError());
|
||
|
|
} else {
|
||
|
|
LOGN(
|
||
|
|
eDbgLevelInfo,
|
||
|
|
"[CreateFileW] Success after CD stop: \"%S\".", lpFileName);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return hRet;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Check for _lseek error.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
long
|
||
|
|
APIHOOK(_lseek)(
|
||
|
|
int handle,
|
||
|
|
long offset,
|
||
|
|
int origin
|
||
|
|
)
|
||
|
|
{
|
||
|
|
long iRet = ORIGINAL_API(_lseek)(handle, offset, origin);
|
||
|
|
|
||
|
|
if (iRet == -1L && IsOnCDRom((HANDLE)handle)) {
|
||
|
|
|
||
|
|
StopCDH((HANDLE)handle);
|
||
|
|
|
||
|
|
iRet = ORIGINAL_API(_lseek)(handle, offset, origin);
|
||
|
|
|
||
|
|
if (iRet == -1L) {
|
||
|
|
DPFN( eDbgLevelWarning,
|
||
|
|
"[_lseek] failure: Error %d.\n", GetLastError());
|
||
|
|
} else {
|
||
|
|
LOGN(
|
||
|
|
eDbgLevelInfo,
|
||
|
|
"[_lseek] Success after CD stop.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return iRet;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Check for _hread error.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
long
|
||
|
|
APIHOOK(_hread)(
|
||
|
|
HFILE hFile,
|
||
|
|
LPVOID lpBuffer,
|
||
|
|
long lBytes
|
||
|
|
)
|
||
|
|
{
|
||
|
|
long iRet = ORIGINAL_API(_hread)(hFile, lpBuffer, lBytes);
|
||
|
|
|
||
|
|
if (iRet == HFILE_ERROR && IsOnCDRom((HANDLE)hFile)) {
|
||
|
|
StopCDH((HANDLE)hFile);
|
||
|
|
|
||
|
|
iRet = ORIGINAL_API(_hread)(hFile, lpBuffer, lBytes);
|
||
|
|
|
||
|
|
if (iRet == HFILE_ERROR) {
|
||
|
|
DPFN( eDbgLevelWarning,
|
||
|
|
"[_hread] failure: Error %d.\n", GetLastError());
|
||
|
|
} else {
|
||
|
|
LOGN(
|
||
|
|
eDbgLevelInfo,
|
||
|
|
"[_hread] Success after CD stop.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return iRet;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Check for ReadFile error.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
APIHOOK(ReadFile)(
|
||
|
|
HANDLE hFile,
|
||
|
|
LPVOID lpBuffer,
|
||
|
|
DWORD nNumberOfBytesToRead,
|
||
|
|
LPDWORD lpNumberOfBytesRead,
|
||
|
|
LPOVERLAPPED lpOverlapped
|
||
|
|
)
|
||
|
|
{
|
||
|
|
BOOL bRet = ORIGINAL_API(ReadFile)(
|
||
|
|
hFile,
|
||
|
|
lpBuffer,
|
||
|
|
nNumberOfBytesToRead,
|
||
|
|
lpNumberOfBytesRead,
|
||
|
|
lpOverlapped);
|
||
|
|
|
||
|
|
if ((bRet == FALSE) && (ERROR_BUSY == GetLastError()) && IsOnCDRom(hFile)) {
|
||
|
|
|
||
|
|
StopCDH(hFile);
|
||
|
|
|
||
|
|
bRet = ORIGINAL_API(ReadFile)(
|
||
|
|
hFile,
|
||
|
|
lpBuffer,
|
||
|
|
nNumberOfBytesToRead,
|
||
|
|
lpNumberOfBytesRead,
|
||
|
|
lpOverlapped);
|
||
|
|
|
||
|
|
if (bRet == FALSE) {
|
||
|
|
DPFN( eDbgLevelWarning,
|
||
|
|
"[ReadFile] failure Error %d.\n", GetLastError());
|
||
|
|
} else {
|
||
|
|
LOGN(
|
||
|
|
eDbgLevelInfo,
|
||
|
|
"[ReadFile] Success after CD stop.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return bRet;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Register hooked functions
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
|
||
|
|
HOOK_BEGIN
|
||
|
|
|
||
|
|
APIHOOK_ENTRY(KERNEL32.DLL, FindFirstFileA)
|
||
|
|
APIHOOK_ENTRY(KERNEL32.DLL, FindFirstFileW)
|
||
|
|
APIHOOK_ENTRY(KERNEL32.DLL, FindFirstFileExA)
|
||
|
|
APIHOOK_ENTRY(KERNEL32.DLL, FindFirstFileExW)
|
||
|
|
APIHOOK_ENTRY(KERNEL32.DLL, CreateFileA)
|
||
|
|
APIHOOK_ENTRY(KERNEL32.DLL, CreateFileW)
|
||
|
|
APIHOOK_ENTRY(KERNEL32.DLL, ReadFile)
|
||
|
|
APIHOOK_ENTRY(KERNEL32.DLL, _hread)
|
||
|
|
APIHOOK_ENTRY(LIBC.DLL, _lseek)
|
||
|
|
|
||
|
|
HOOK_END
|
||
|
|
|
||
|
|
IMPLEMENT_SHIM_END
|
||
|
|
|