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Windows: Correctly detect presence of CD/DVD recorder during the creation of Rescue Disk. Check only CD/DVD drives and removable media when looking for rescue disk during its verification.

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This commit is contained in:
Mounir IDRASSI
2015-09-15 23:12:56 +02:00
parent db80c02342
commit 52c7445a79
3 changed files with 30 additions and 22 deletions
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48
src/Common/BootEncryption.cpp
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@@ -1742,18 +1742,20 @@ namespace VeraCrypt
#endif
bool BootEncryption::IsCDDrivePresent ()
bool BootEncryption::IsCDRecorderPresent ()
{
for (char drive = 'Z'; drive >= 'C'; --drive)
ICDBurn* pICDBurn;
BOOL bHasRecorder = FALSE;
if (SUCCEEDED( CoCreateInstance (CLSID_CDBurn, NULL,CLSCTX_INPROC_SERVER,IID_ICDBurn,(LPVOID*)&pICDBurn)))
{
string path = "X:\\";
path[0] = drive;
if (GetDriveType (path.c_str()) == DRIVE_CDROM)
return true;
if (pICDBurn->HasRecordableDrive (&bHasRecorder) != S_OK)
{
bHasRecorder = FALSE;
}
pICDBurn->Release();
}
return false;
return bHasRecorder? true : false;
}
@@ -1766,20 +1768,26 @@ namespace VeraCrypt
{
try
{
string path = "X:";
path[0] = drive;
char rootPath[4] = { drive, ':', '\\', 0};
UINT driveType = GetDriveTypeA (rootPath);
// check that it is a CD/DVD drive or a removable media in case a bootable
// USB key was created from the rescue disk ISO file
if ((DRIVE_CDROM == driveType) || (DRIVE_REMOVABLE == driveType))
{
rootPath[2] = 0; // remove trailing backslash
Device driveDevice (path, true);
driveDevice.CheckOpened (SRC_POS);
size_t verifiedSectorCount = (TC_CD_BOOTSECTOR_OFFSET + TC_ORIG_BOOT_LOADER_BACKUP_SECTOR_OFFSET + TC_BOOT_LOADER_AREA_SIZE) / 2048;
Buffer buffer ((verifiedSectorCount + 1) * 2048);
Device driveDevice (rootPath, true);
driveDevice.CheckOpened (SRC_POS);
size_t verifiedSectorCount = (TC_CD_BOOTSECTOR_OFFSET + TC_ORIG_BOOT_LOADER_BACKUP_SECTOR_OFFSET + TC_BOOT_LOADER_AREA_SIZE) / 2048;
Buffer buffer ((verifiedSectorCount + 1) * 2048);
DWORD bytesRead = driveDevice.Read (buffer.Ptr(), (DWORD) buffer.Size());
if (bytesRead != buffer.Size())
continue;
DWORD bytesRead = driveDevice.Read (buffer.Ptr(), (DWORD) buffer.Size());
if (bytesRead != buffer.Size())
continue;
if (memcmp (buffer.Ptr(), RescueIsoImage, buffer.Size()) == 0)
return true;
if (memcmp (buffer.Ptr(), RescueIsoImage, buffer.Size()) == 0)
return true;
}
}
catch (...) { }
}