/* Legal Notice: Some portions of the source code contained in this file were derived from the source code of TrueCrypt 7.1a, which is Copyright (c) 2003-2012 TrueCrypt Developers Association and which is governed by the TrueCrypt License 3.0, also from the source code of Encryption for the Masses 2.02a, which is Copyright (c) 1998-2000 Paul Le Roux and which is governed by the 'License Agreement for Encryption for the Masses' and also from the source code of extcv, which is Copyright (c) 2009-2010 Kih-Oskh or Copyright (c) 2012-2013 Josef Schneider <josef@netpage.dk> Modifications and additions to the original source code (contained in this file) and all other portions of this file are Copyright (c) 2013-2016 IDRIX and are governed by the Apache License 2.0 the full text of which is contained in the file License.txt included in VeraCrypt binary and source code distribution packages. */ #include "Tcdefs.h" #include <time.h> #include <math.h> #include <dbt.h> #include <fcntl.h> #include <io.h> #include <sys/stat.h> #include <windowsx.h> #include <stdio.h> #include "Apidrvr.h" #include "Volumes.h" #include "Crypto.h" #include "Dlgcode.h" #include "Language.h" #include "Pkcs5.h" #include "Random.h" #include "Progress.h" #include "InitDataArea.h" #include "ExpandVolume.h" #include "Resource.h" #ifndef SRC_POS #define SRC_POS (__FUNCTION__ ":" TC_TO_STRING(__LINE__)) #endif #define DEBUG_EXPAND_VOLUME #ifdef DEBUG_EXPAND_VOLUME #define DebugAddProgressDlgStatus AddProgressDlgStatus #else #define DebugAddProgressDlgStatus(a,b) #endif HWND hCurPage; /* Handle to window with progress bar (used by FormatNoFs)*/ int nPbar; /* Control ID of progress bar (used by FormatNoFs) */ volatile BOOL bVolTransformThreadCancel = FALSE; /* TRUE if the user cancels/pauses volume expansion */ // internal functions static int UpdateVolumeHeaderHostSize (wchar_t *lpszVolume, Password *pVolumePassword, HWND hwndDlg, uint64 newHostSize, uint64 *pDataSize, BOOL initFreeSpace); static int FsctlExtendVolume(wchar_t * szVolume, LONGLONG nTotalSectors ); /* MountVolTemp Mounts a trucrypt volume temporarily (using any free drive number) Parameters: hwndDlg : HWND [in] handle to parent window volumePath : char * [in] Pointer to a string that contains the volume path driveNo : int * [out] returns the drive number (0='A',...) password : Password * [in] Pointer to the volume password Return value: int with Truecrypt error code (ERR_SUCCESS on success) */ int MountVolTemp (HWND hwndDlg, wchar_t *volumePath, int *driveNo, Password *password, int pkcs5, int pim) { MountOptions mountOptions; ZeroMemory (&mountOptions, sizeof (mountOptions)); *driveNo = GetLastAvailableDrive (); if (*driveNo == -1) { *driveNo = -2; return ERR_NO_FREE_DRIVES; } mountOptions.ReadOnly = FALSE; mountOptions.Removable = ConfigReadInt ("MountVolumesRemovable", FALSE); mountOptions.ProtectHiddenVolume = FALSE; mountOptions.PreserveTimestamp = bPreserveTimestamp; mountOptions.PartitionInInactiveSysEncScope = FALSE; mountOptions.UseBackupHeader = FALSE; if (MountVolume (hwndDlg, *driveNo, volumePath, password, pkcs5, pim, FALSE, FALSE, FALSE, TRUE, &mountOptions, FALSE, FALSE) < 1) { *driveNo = -3; return ERR_VOL_MOUNT_FAILED; } return 0; } /* FsctlExtendVolume Expands a volume by sending the FSCTL_EXTEND_VOLUME ioctl command to the volume Parameters: szVolume : char * [in] Pointer to a string that contains the volume GUID nTotalSectors : LONGLONG [in] specifies the total size of the volume, in sectors Return value: int with Truecrypt error code (ERR_SUCCESS on success) Remarks: only supported by NTFS and RAW file systems */ static int FsctlExtendVolume(wchar_t * szVolume, LONGLONG nTotalSectors ) { HANDLE hDevice; // handle to the volume to be extended BOOL bResult; // results flag DWORD nbytes; // discard results DWORD dwError; int nStatus = ERR_OS_ERROR; hDevice = CreateFile(szVolume, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (hDevice == INVALID_HANDLE_VALUE) goto error; bResult = DeviceIoControl(hDevice, FSCTL_EXTEND_VOLUME, &nTotalSectors, sizeof(nTotalSectors), NULL, 0, &nbytes, (LPOVERLAPPED) NULL); if (bResult) nStatus = ERR_SUCCESS; error: dwError = GetLastError (); if (hDevice != INVALID_HANDLE_VALUE) CloseHandle (hDevice); SetLastError (dwError); return nStatus; } BOOL GetFileSystemType(const wchar_t *szFileName, enum EV_FileSystem *pFS) { wchar_t szFS[256]; wchar_t root[MAX_PATH]; *pFS = EV_FS_TYPE_RAW; if (!GetVolumePathName (szFileName, root, ARRAYSIZE (root))) return FALSE; if ( GetVolumeInformation (root, NULL, 0, NULL, NULL, NULL, szFS, ARRAYSIZE(szFS)) ) { if (!wcsncmp (szFS, L"NTFS", 4)) *pFS = EV_FS_TYPE_NTFS; else if (!wcsncmp (szFS, L"FAT", 3)) // FAT16, FAT32 *pFS = EV_FS_TYPE_FAT; else if (!_wcsnicmp (szFS, L"exFAT", 5)) // exFAT *pFS = EV_FS_TYPE_EXFAT; else *pFS = EV_FS_TYPE_RAW; } else { return FALSE; } return TRUE; } /* QueryVolumeInfo Retrieves the free disk space and file size limit on the truecrypt volume host Parameters: hwndDlg : HWND [in] handle to parent window lpszVolume : char * [in] Pointer to a string that contains the volume path pHostSizeFree : uint64 * [out] returns the free space available on the host (always zero for devices) pSizeLimitFS : uint64 * [out] returns the file size limit of the host file system Return value: int with TrueCrypt error code (ERR_SUCCESS on success) */ int QueryVolumeInfo (HWND hwndDlg, const wchar_t *lpszVolume, uint64 * pHostSizeFree, uint64 * pSizeLimitFS ) { int nStatus = ERR_OS_ERROR; wchar_t szDiskFile[TC_MAX_PATH], root[MAX_PATH]; BOOL bDevice; enum EV_FileSystem fs; *pSizeLimitFS = (uint64)-1; CreateFullVolumePath (szDiskFile, sizeof(szDiskFile), lpszVolume, &bDevice); if (bDevice) { *pHostSizeFree=0; return ERR_SUCCESS; } if (!GetVolumePathName (szDiskFile, root, ARRAYSIZE (root))) { nStatus = ERR_OS_ERROR; goto error; } if( ! GetDiskFreeSpaceEx (root,(PULARGE_INTEGER)pHostSizeFree,NULL,NULL) ) { nStatus = ERR_OS_ERROR; goto error; } if ( ! GetFileSystemType(root,&fs) ) { nStatus = ERR_OS_ERROR; goto error; } /* file size limits FAT16 / FAT32 : 4 GB minus 1 byte (2^32 bytes minus 1 byte) exFAT: 128 PiB − 1 byte NTFS : Architecturally : 16 exabytes minus 1 KB (26^4 bytes minus 1 KB) Implementation (Windows Server 2008): 16 terabytes minus 64 KB (2^44 bytes minus 64 KB) */ switch (fs) { case EV_FS_TYPE_NTFS: *pSizeLimitFS = 16 * BYTES_PER_TB - 64 * BYTES_PER_KB; break; case EV_FS_TYPE_EXFAT: *pSizeLimitFS = 128 * BYTES_PER_PB - 1; break; case EV_FS_TYPE_FAT: *pSizeLimitFS = 4 * BYTES_PER_GB - 1; break; default: *pSizeLimitFS = (uint64)-1; } nStatus = ERR_SUCCESS; error: return nStatus; } BOOL GetNtfsNumberOfSectors(wchar_t * rootPath, uint64 * pNumberOfSectors, DWORD *pBytesPerSector) { HANDLE hDevice; BOOL bResult; DWORD nbytes, dwError; size_t len; NTFS_VOLUME_DATA_BUFFER ntfsvdb; wchar_t szVolumeGUID[128]; // get volume name if (!GetVolumeNameForVolumeMountPoint(rootPath,szVolumeGUID,ARRAYSIZE(szVolumeGUID))) { return FALSE; } // strip trailing backslash from volume GUID (otherwise it means root dir) len = wcslen(szVolumeGUID); if (len>0) --len; if (szVolumeGUID[len]==L'\\') szVolumeGUID[len]=0; hDevice = CreateFile(szVolumeGUID, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (hDevice == INVALID_HANDLE_VALUE) return (FALSE); bResult = DeviceIoControl(hDevice, FSCTL_GET_NTFS_VOLUME_DATA, NULL, 0, &ntfsvdb, sizeof(ntfsvdb), &nbytes, (LPOVERLAPPED) NULL); if (bResult) { if (pNumberOfSectors) *pNumberOfSectors = ntfsvdb.NumberSectors.QuadPart; if (pBytesPerSector) *pBytesPerSector = ntfsvdb.BytesPerSector; } dwError = GetLastError (); CloseHandle(hDevice); SetLastError (dwError); return (bResult); } uint64 GetVolumeDataAreaSize (uint64 volumeSize, BOOL legacyVolume) { uint64 reservedSize; if (legacyVolume) reservedSize = TC_VOLUME_HEADER_SIZE_LEGACY; else reservedSize = TC_TOTAL_VOLUME_HEADERS_SIZE; if (volumeSize < reservedSize) return 0; return volumeSize - reservedSize; } uint64 GetVolumeSizeByDataAreaSize (uint64 dataAreaSize, BOOL legacyVolume) { uint64 reservedSize; if (legacyVolume) reservedSize = TC_VOLUME_HEADER_SIZE_LEGACY; else reservedSize = TC_TOTAL_VOLUME_HEADERS_SIZE; return dataAreaSize + reservedSize; } int ExtendFileSystem (HWND hwndDlg , wchar_t *lpszVolume, Password *pVolumePassword, int VolumePkcs5, int VolumePim, uint64 newDataAreaSize) { wchar_t szVolumeGUID[128]; int driveNo = -1; wchar_t rootPath[] = L"A:\\"; enum EV_FileSystem fs; DWORD dwError; int nStatus = ERR_SUCCESS; DWORD BytesPerSector; // mount and resize file system DebugAddProgressDlgStatus (hwndDlg, L"Mounting volume ...\r\n"); nStatus=MountVolTemp(hwndDlg, lpszVolume, &driveNo, pVolumePassword, VolumePkcs5, VolumePim); if (nStatus!=ERR_SUCCESS) { driveNo = -1; goto error; } rootPath[0] += driveNo; if ( !GetFileSystemType(rootPath,&fs) ) { dwError = GetLastError(); if (dwError == ERROR_UNRECOGNIZED_VOLUME) { // raw volume with unrecognized file system -> return with no error nStatus = ERR_SUCCESS; goto error; } nStatus = ERR_OS_ERROR; goto error; } if (fs != EV_FS_TYPE_RAW && fs != EV_FS_TYPE_NTFS ) { // FsctlExtendVolume only supports NTFS and RAW -> return with no error nStatus = ERR_SUCCESS; goto error; } // Get volume GUID if (!GetVolumeNameForVolumeMountPoint(rootPath,szVolumeGUID,ARRAYSIZE(szVolumeGUID))) { nStatus = ERR_OS_ERROR; goto error; } else { // strip trailing backslash from volume GUID (otherwise it means root dir) size_t len = wcslen(szVolumeGUID); if (len>0) --len; if (szVolumeGUID[len]==L'\\') szVolumeGUID[len]=0; } // Get Sector Size if ( !GetNtfsNumberOfSectors(rootPath, NULL, &BytesPerSector) ) { nStatus = ERR_OS_ERROR; goto error; } DebugAddProgressDlgStatus (hwndDlg, L"Extending file system ...\r\n"); // extend volume nStatus = FsctlExtendVolume(szVolumeGUID, newDataAreaSize/BytesPerSector ); error: dwError = GetLastError(); if (driveNo>=0) { DebugAddProgressDlgStatus (hwndDlg, L"Unmounting volume ...\r\n"); UnmountVolume (hwndDlg, driveNo, TRUE); } SetLastError (dwError); return nStatus; } /* ExpandVolume Sets the volume size in the volume header (and backup header) to a larger value, and resizes the filesystem within the volume (only NTFS supported) Parameters: hwndDlg : HWND [in] handle to progress dialog lpszVolume : char * [in] Pointer to a string that contains the path to the truecrypt volume pVolumePassword : Password * [in] Pointer to the volume password newHostSize : uint64 [in] new value of the volume host size (can be zero for devices, which means the volume should use all space of the host device) initFreeSpace : BOOL [in] if true, the new volume space will be initalized with random data Return value: int with Truecrypt error code (ERR_SUCCESS on success) Remarks: a lot of code is from TrueCrypt 'Common\Password.c' :: ChangePwd() */ static int ExpandVolume (HWND hwndDlg, wchar_t *lpszVolume, Password *pVolumePassword, int VolumePkcs5, int VolumePim, uint64 newHostSize, BOOL initFreeSpace) { int nDosLinkCreated = 1, nStatus = ERR_OS_ERROR; wchar_t szDiskFile[TC_MAX_PATH], szCFDevice[TC_MAX_PATH]; wchar_t szDosDevice[TC_MAX_PATH]; char buffer[TC_VOLUME_HEADER_EFFECTIVE_SIZE]; PCRYPTO_INFO cryptoInfo = NULL, ci = NULL; void *dev = INVALID_HANDLE_VALUE; DWORD dwError; BOOL bDevice; uint64 hostSize=0, newDataAreaSize, currentVolSize; DWORD HostSectorSize; FILETIME ftCreationTime; FILETIME ftLastWriteTime; FILETIME ftLastAccessTime; BOOL bTimeStampValid = FALSE; LARGE_INTEGER headerOffset; BOOL backupHeader; byte *wipeBuffer = NULL; uint32 workChunkSize = TC_VOLUME_HEADER_GROUP_SIZE; if (pVolumePassword->Length == 0) return -1; WaitCursor (); CreateFullVolumePath (szDiskFile, sizeof(szDiskFile), lpszVolume, &bDevice); if (bDevice == FALSE) { wcscpy (szCFDevice, szDiskFile); } else { nDosLinkCreated = FakeDosNameForDevice (szDiskFile, szDosDevice, sizeof(szDosDevice), szCFDevice, sizeof(szCFDevice), FALSE); if (nDosLinkCreated != 0) // note: nStatus == ERR_OS_ERROR goto error; } dev = CreateFile (szCFDevice, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); if (dev == INVALID_HANDLE_VALUE) goto error; if (bDevice) { /* This is necessary to determine the hidden volume header offset */ if (dev == INVALID_HANDLE_VALUE) { goto error; } else { PARTITION_INFORMATION diskInfo; DWORD dwResult; BOOL bResult; bResult = GetPartitionInfo (lpszVolume, &diskInfo); if (bResult) { hostSize = diskInfo.PartitionLength.QuadPart; HostSectorSize = TC_SECTOR_SIZE_FILE_HOSTED_VOLUME; //TO DO: get the real host disk sector size } else { DISK_GEOMETRY driveInfo; bResult = DeviceIoControl (dev, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &driveInfo, sizeof (driveInfo), &dwResult, NULL); if (!bResult) goto error; hostSize = driveInfo.Cylinders.QuadPart * driveInfo.BytesPerSector * driveInfo.SectorsPerTrack * driveInfo.TracksPerCylinder; HostSectorSize = driveInfo.BytesPerSector; } if (hostSize == 0) { nStatus = ERR_VOL_SIZE_WRONG; goto error; } } } else { LARGE_INTEGER fileSize; if (!GetFileSizeEx (dev, &fileSize)) { nStatus = ERR_OS_ERROR; goto error; } hostSize = fileSize.QuadPart; HostSectorSize = TC_SECTOR_SIZE_FILE_HOSTED_VOLUME; //TO DO: get the real host disk sector size } if (Randinit ()) { if (CryptoAPILastError == ERROR_SUCCESS) nStatus = ERR_RAND_INIT_FAILED; else nStatus = ERR_CAPI_INIT_FAILED; goto error; } if (!bDevice && bPreserveTimestamp) { /* Remember the container modification/creation date and time, (used to reset file date and time of file-hosted volumes after password change (or attempt to), in order to preserve plausible deniability of hidden volumes (last password change time is stored in the volume header). */ if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0) { bTimeStampValid = FALSE; MessageBoxW (hwndDlg, GetString ("GETFILETIME_FAILED_PW"), lpszTitle, MB_OK | MB_ICONEXCLAMATION); } else bTimeStampValid = TRUE; } // Seek the volume header headerOffset.QuadPart = TC_VOLUME_HEADER_OFFSET; if (!SetFilePointerEx ((HANDLE) dev, headerOffset, NULL, FILE_BEGIN)) { nStatus = ERR_OS_ERROR; goto error; } /* Read in volume header */ nStatus = _lread ((HFILE) dev, buffer, sizeof (buffer)); if (nStatus != sizeof (buffer)) { // Windows may report EOF when reading sectors from the last cluster of a device formatted as NTFS memset (buffer, 0, sizeof (buffer)); } /* Try to decrypt the header */ nStatus = ReadVolumeHeader (FALSE, buffer, pVolumePassword, VolumePkcs5, VolumePim, FALSE, &cryptoInfo, NULL); if (nStatus == ERR_CIPHER_INIT_WEAK_KEY) nStatus = 0; // We can ignore this error here if (nStatus != 0) { cryptoInfo = NULL; goto error; } if (cryptoInfo->HeaderFlags & TC_HEADER_FLAG_ENCRYPTED_SYSTEM) { nStatus = ERR_SYS_HIDVOL_HEAD_REENC_MODE_WRONG; goto error; } if (bDevice && newHostSize == 0) { // this means we shall take all host space as new volume size newHostSize = hostSize; } if ( newHostSize % cryptoInfo->SectorSize != 0 || newHostSize > TC_MAX_VOLUME_SIZE || (bDevice && newHostSize > hostSize) ) { // 1. must be multiple of sector size // 2. truecrypt volume size limit // 3. for devices volume size can't be larger than host size cryptoInfo = NULL; nStatus = ERR_PARAMETER_INCORRECT; goto error; } newDataAreaSize = GetVolumeDataAreaSize (newHostSize, cryptoInfo->LegacyVolume); if (cryptoInfo->LegacyVolume) { if (bDevice) { if (initFreeSpace) { // unsupported cryptoInfo = NULL; nStatus = ERR_PARAMETER_INCORRECT; goto error; } else { // note: dummy value (only used for parameter checks) cryptoInfo->VolumeSize.Value = newDataAreaSize - TC_MINVAL_FS_EXPAND; } } else { cryptoInfo->VolumeSize.Value = GetVolumeDataAreaSize (hostSize, TRUE); } } currentVolSize = GetVolumeSizeByDataAreaSize (cryptoInfo->VolumeSize.Value, cryptoInfo->LegacyVolume); if ( newDataAreaSize < cryptoInfo->VolumeSize.Value + TC_MINVAL_FS_EXPAND ) { // shrinking a volume or enlarging by less then TC_MINVAL_FS_EXPAND is not allowed cryptoInfo = NULL; nStatus = ERR_PARAMETER_INCORRECT; goto error; } InitProgressBar ( newHostSize, currentVolSize, FALSE, FALSE, FALSE, TRUE); if (bVolTransformThreadCancel) { SetLastError(0); nStatus = ERR_USER_ABORT; goto error; } if (!bDevice) { LARGE_INTEGER liNewSize; liNewSize.QuadPart=(LONGLONG)newHostSize; // Preallocate the file if (!SetFilePointerEx (dev, liNewSize, NULL, FILE_BEGIN) || !SetEndOfFile (dev) || SetFilePointer (dev, 0, NULL, FILE_BEGIN) != 0) { nStatus = ERR_OS_ERROR; goto error; } } if (initFreeSpace) { uint64 startSector; int64 num_sectors; // fill new space with random data startSector = currentVolSize/HostSectorSize ; num_sectors = (newHostSize/HostSectorSize) - startSector; if (bDevice && !StartFormatWriteThread()) { nStatus = ERR_OS_ERROR; goto error; } DebugAddProgressDlgStatus(hwndDlg, L"Writing random data to new space ...\r\n"); SetFormatSectorSize(HostSectorSize); nStatus = FormatNoFs (hwndDlg, startSector, num_sectors, dev, cryptoInfo, FALSE); dwError = GetLastError(); StopFormatWriteThread(); SetLastError (dwError); } else { UpdateProgressBar(newHostSize); } if (nStatus != ERR_SUCCESS) { dwError = GetLastError(); DebugAddProgressDlgStatus(hwndDlg, L"Error: failed to write random data ...\r\n"); if ( !bDevice ) { // restore original size of the container file LARGE_INTEGER liOldSize; liOldSize.QuadPart=(LONGLONG)hostSize; if (!SetFilePointerEx (dev, liOldSize, NULL, FILE_BEGIN) || !SetEndOfFile (dev)) { DebugAddProgressDlgStatus(hwndDlg, L"Warning: failed to restore original size of the container file\r\n"); } } SetLastError (dwError); goto error; } RandSetHashFunction (cryptoInfo->pkcs5); // Re-encrypt the volume header forn non-legacy volumes: backup header first backupHeader = TRUE; headerOffset.QuadPart = TC_VOLUME_HEADER_OFFSET + newHostSize - TC_VOLUME_HEADER_GROUP_SIZE; /* note: updating the header is not neccessary for legay volumes */ while ( !cryptoInfo->LegacyVolume ) { if (backupHeader) DebugAddProgressDlgStatus(hwndDlg, L"Writing re-encrypted backup header ...\r\n"); else DebugAddProgressDlgStatus(hwndDlg, L"Writing re-encrypted primary header ...\r\n"); // Prepare new volume header nStatus = CreateVolumeHeaderInMemory (hwndDlg, FALSE, buffer, cryptoInfo->ea, cryptoInfo->mode, pVolumePassword, cryptoInfo->pkcs5, VolumePim, (char*)(cryptoInfo->master_keydata), &ci, newDataAreaSize, 0, // hiddenVolumeSize cryptoInfo->EncryptedAreaStart.Value, newDataAreaSize, cryptoInfo->RequiredProgramVersion, cryptoInfo->HeaderFlags, cryptoInfo->SectorSize, FALSE ); // use slow poll if (ci != NULL) crypto_close (ci); if (nStatus != 0) goto error; if (!SetFilePointerEx ((HANDLE) dev, headerOffset, NULL, FILE_BEGIN)) { nStatus = ERR_OS_ERROR; goto error; } if (!WriteEffectiveVolumeHeader (bDevice, dev, buffer)) { nStatus = ERR_OS_ERROR; goto error; } if ( ( backupHeader && !initFreeSpace ) || ( bDevice && !cryptoInfo->LegacyVolume && !cryptoInfo->hiddenVolume && cryptoInfo->HeaderVersion == 4 // BUG in TrueCrypt: doing this only for v4 make no sense && (cryptoInfo->HeaderFlags & TC_HEADER_FLAG_NONSYS_INPLACE_ENC) != 0 && (cryptoInfo->HeaderFlags & ~TC_HEADER_FLAG_NONSYS_INPLACE_ENC) == 0 ) ) { //DebugAddProgressDlgStatus(hwndDlg, L"WriteRandomDataToReservedHeaderAreas() ...\r\n"); PCRYPTO_INFO dummyInfo = NULL; LARGE_INTEGER hiddenOffset; nStatus = WriteRandomDataToReservedHeaderAreas (hwndDlg, dev, cryptoInfo, newDataAreaSize, !backupHeader, backupHeader); if (nStatus != ERR_SUCCESS) goto error; // write fake hidden volume header to protect against attacks that use statistical entropy // analysis to detect presence of hidden volumes hiddenOffset.QuadPart = headerOffset.QuadPart + TC_HIDDEN_VOLUME_HEADER_OFFSET; nStatus = CreateVolumeHeaderInMemory (hwndDlg, FALSE, buffer, cryptoInfo->ea, cryptoInfo->mode, NULL, 0, 0, NULL, &dummyInfo, newDataAreaSize, newDataAreaSize, // hiddenVolumeSize cryptoInfo->EncryptedAreaStart.Value, newDataAreaSize, cryptoInfo->RequiredProgramVersion, cryptoInfo->HeaderFlags, cryptoInfo->SectorSize, FALSE ); // use slow poll if (nStatus != ERR_SUCCESS) goto error; crypto_close (dummyInfo); if (!SetFilePointerEx ((HANDLE) dev, hiddenOffset, NULL, FILE_BEGIN)) { nStatus = ERR_OS_ERROR; goto error; } if (!WriteEffectiveVolumeHeader (bDevice, dev, buffer)) { nStatus = ERR_OS_ERROR; goto error; } } FlushFileBuffers (dev); if (!backupHeader) break; backupHeader = FALSE; headerOffset.QuadPart = TC_VOLUME_HEADER_OFFSET; // offset for main header } /* header successfully updated */ nStatus = ERR_SUCCESS; if (bVolTransformThreadCancel) { nStatus = ERR_USER_ABORT; goto error; } /* wipe old backup header */ if ( !cryptoInfo->LegacyVolume ) { byte wipeRandChars [TC_WIPE_RAND_CHAR_COUNT]; byte wipeRandCharsUpdate [TC_WIPE_RAND_CHAR_COUNT]; byte wipePass; UINT64_STRUCT unitNo; LARGE_INTEGER offset; WipeAlgorithmId wipeAlgorithm = TC_WIPE_35_GUTMANN; if ( !RandgetBytes (hwndDlg, wipeRandChars, TC_WIPE_RAND_CHAR_COUNT, TRUE) || !RandgetBytes (hwndDlg, wipeRandCharsUpdate, TC_WIPE_RAND_CHAR_COUNT, TRUE) ) { nStatus = ERR_OS_ERROR; goto error; } DebugAddProgressDlgStatus(hwndDlg, L"Wiping old backup header ...\r\n"); wipeBuffer = (byte *) TCalloc (workChunkSize); if (!wipeBuffer) { nStatus = ERR_OUTOFMEMORY; goto error; } offset.QuadPart = currentVolSize - TC_VOLUME_HEADER_GROUP_SIZE; unitNo.Value = offset.QuadPart; for (wipePass = 1; wipePass <= GetWipePassCount (wipeAlgorithm); ++wipePass) { if (!WipeBuffer (wipeAlgorithm, wipeRandChars, wipePass, wipeBuffer, workChunkSize)) { ULONG i; for (i = 0; i < workChunkSize; ++i) { wipeBuffer[i] = wipePass; } EncryptDataUnits (wipeBuffer, &unitNo, workChunkSize / ENCRYPTION_DATA_UNIT_SIZE, cryptoInfo); memcpy (wipeRandCharsUpdate, wipeBuffer, sizeof (wipeRandCharsUpdate)); } if ( !SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) || _lwrite ((HFILE)dev, (LPCSTR)wipeBuffer, workChunkSize) == HFILE_ERROR ) { // Write error DebugAddProgressDlgStatus(hwndDlg, L"Warning: Failed to wipe old backup header\r\n"); MessageBoxW (hwndDlg, L"WARNING: Failed to wipe old backup header!\n\nIt may be possible to use the current volume password to decrypt the old backup header even after a future password change.\n", lpszTitle, MB_OK | MB_ICONEXCLAMATION); if (wipePass == 1) continue; // retry once // non-critical error - it's better to continue nStatus = ERR_SUCCESS; goto error; } FlushFileBuffers(dev); // we don't check FlushFileBuffers() return code, because it fails for devices // (same implementation in password.c - a bug or not ???) } burn (wipeRandChars, TC_WIPE_RAND_CHAR_COUNT); burn (wipeRandCharsUpdate, TC_WIPE_RAND_CHAR_COUNT); } error: dwError = GetLastError (); if (wipeBuffer) { burn (wipeBuffer, workChunkSize); TCfree (wipeBuffer); wipeBuffer = NULL; } burn (buffer, sizeof (buffer)); if (cryptoInfo != NULL) crypto_close (cryptoInfo); if (bTimeStampValid) { // Restore the container timestamp (to preserve plausible deniability of possible hidden volume). if (SetFileTime (dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0) MessageBoxW (hwndDlg, GetString ("SETFILETIME_FAILED_PW"), lpszTitle, MB_OK | MB_ICONEXCLAMATION); } if (dev != INVALID_HANDLE_VALUE) CloseHandle ((HANDLE) dev); if (nDosLinkCreated == 0) RemoveFakeDosName (szDiskFile, szDosDevice); RandStop (FALSE); if (bVolTransformThreadCancel) nStatus = ERR_USER_ABORT; SetLastError (dwError); if (nStatus == ERR_SUCCESS) { nStatus = ExtendFileSystem (hwndDlg, lpszVolume, pVolumePassword, VolumePkcs5, VolumePim, newDataAreaSize); } return nStatus; } void __cdecl volTransformThreadFunction (void *pExpandDlgParam) { int nStatus; EXPAND_VOL_THREAD_PARAMS *pParam=(EXPAND_VOL_THREAD_PARAMS *)pExpandDlgParam; HWND hwndDlg = (HWND) pParam->hwndDlg; nStatus = ExpandVolume (hwndDlg, (wchar_t*)pParam->szVolumeName, pParam->pVolumePassword, pParam->VolumePkcs5, pParam->VolumePim, pParam->newSize, pParam->bInitFreeSpace ); if (nStatus!=ERR_SUCCESS && nStatus!=ERR_USER_ABORT) handleError (hwndDlg, nStatus, SRC_POS); bVolTransformThreadCancel = FALSE; PostMessage (hwndDlg, TC_APPMSG_VOL_TRANSFORM_THREAD_ENDED, 0, nStatus); _endthread (); }