/* 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' 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 #include "Crypto.h" #include "Volumes.h" #include "Apidrvr.h" #include "DriveFilter.h" #include "Ntdriver.h" #include "Ntvol.h" #include "VolumeFilter.h" #include "Boot/Windows/BootCommon.h" #include "Cache.h" #if 0 && _DEBUG #define EXTRA_INFO 1 #endif #pragma warning( disable : 4127 ) #include volatile BOOL ProbingHostDeviceForWrite = FALSE; NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject, PEXTENSION Extension, MOUNT_STRUCT *mount, PWSTR pwszMountVolume, BOOL bRawDevice) { FILE_STANDARD_INFORMATION FileStandardInfo; FILE_BASIC_INFORMATION FileBasicInfo; OBJECT_ATTRIBUTES oaFileAttributes; UNICODE_STRING FullFileName; IO_STATUS_BLOCK IoStatusBlock; PCRYPTO_INFO cryptoInfoPtr = NULL; PCRYPTO_INFO tmpCryptoInfo = NULL; LARGE_INTEGER lDiskLength; __int64 partitionStartingOffset = 0; int volumeType; char *readBuffer = 0; NTSTATUS ntStatus = 0; BOOL forceAccessCheck = (!bRawDevice && !(OsMajorVersion == 5 &&OsMinorVersion == 0)); // Windows 2000 does not support OBJ_FORCE_ACCESS_CHECK attribute BOOL disableBuffering = TRUE; BOOL exclusiveAccess = mount->bExclusiveAccess; Extension->pfoDeviceFile = NULL; Extension->hDeviceFile = NULL; Extension->bTimeStampValid = FALSE; RtlInitUnicodeString (&FullFileName, pwszMountVolume); InitializeObjectAttributes (&oaFileAttributes, &FullFileName, OBJ_CASE_INSENSITIVE | (forceAccessCheck ? OBJ_FORCE_ACCESS_CHECK : 0) | OBJ_KERNEL_HANDLE, NULL, NULL); KeInitializeEvent (&Extension->keVolumeEvent, NotificationEvent, FALSE); if (Extension->SecurityClientContextValid) { ntStatus = SeImpersonateClientEx (&Extension->SecurityClientContext, NULL); if (!NT_SUCCESS (ntStatus)) goto error; } mount->VolumeMountedReadOnlyAfterDeviceWriteProtected = FALSE; // If we are opening a device, query its size first if (bRawDevice) { PARTITION_INFORMATION pi; PARTITION_INFORMATION_EX pix; LARGE_INTEGER diskLengthInfo; DISK_GEOMETRY dg; STORAGE_PROPERTY_QUERY storagePropertyQuery = {0}; STORAGE_ACCESS_ALIGNMENT_DESCRIPTOR storageDescriptor = {0}; ntStatus = IoGetDeviceObjectPointer (&FullFileName, FILE_READ_DATA | FILE_READ_ATTRIBUTES, &Extension->pfoDeviceFile, &Extension->pFsdDevice); if (!NT_SUCCESS (ntStatus)) goto error; ntStatus = TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IOCTL_DISK_GET_DRIVE_GEOMETRY, (char *) &dg, sizeof (dg)); if (!NT_SUCCESS (ntStatus)) goto error; lDiskLength.QuadPart = dg.Cylinders.QuadPart * dg.SectorsPerTrack * dg.TracksPerCylinder * dg.BytesPerSector; Extension->HostBytesPerSector = dg.BytesPerSector; storagePropertyQuery.PropertyId = StorageAccessAlignmentProperty; storagePropertyQuery.QueryType = PropertyStandardQuery; /* IOCTL_STORAGE_QUERY_PROPERTY supported only on Vista and above */ if (NT_SUCCESS (TCSendHostDeviceIoControlRequestEx (DeviceObject, Extension, IOCTL_STORAGE_QUERY_PROPERTY, (char*) &storagePropertyQuery, sizeof(storagePropertyQuery), (char *) &storageDescriptor, sizeof (storageDescriptor)))) { Extension->HostBytesPerPhysicalSector = storageDescriptor.BytesPerPhysicalSector; } else { Extension->HostBytesPerPhysicalSector = dg.BytesPerSector; } // Drive geometry is used only when IOCTL_DISK_GET_PARTITION_INFO fails if (NT_SUCCESS (TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IOCTL_DISK_GET_PARTITION_INFO_EX, (char *) &pix, sizeof (pix)))) { lDiskLength.QuadPart = pix.PartitionLength.QuadPart; partitionStartingOffset = pix.StartingOffset.QuadPart; } // Windows 2000 does not support IOCTL_DISK_GET_PARTITION_INFO_EX else if (NT_SUCCESS (TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IOCTL_DISK_GET_PARTITION_INFO, (char *) &pi, sizeof (pi)))) { lDiskLength.QuadPart = pi.PartitionLength.QuadPart; partitionStartingOffset = pi.StartingOffset.QuadPart; } else if (NT_SUCCESS (TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IOCTL_DISK_GET_LENGTH_INFO, &diskLengthInfo, sizeof (diskLengthInfo)))) { lDiskLength = diskLengthInfo; } ProbingHostDeviceForWrite = TRUE; if (!mount->bMountReadOnly && TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IsHiddenSystemRunning() ? TC_IOCTL_DISK_IS_WRITABLE : IOCTL_DISK_IS_WRITABLE, NULL, 0) == STATUS_MEDIA_WRITE_PROTECTED) { mount->bMountReadOnly = TRUE; DeviceObject->Characteristics |= FILE_READ_ONLY_DEVICE; mount->VolumeMountedReadOnlyAfterDeviceWriteProtected = TRUE; } ProbingHostDeviceForWrite = FALSE; // Some Windows tools (e.g. diskmgmt, diskpart, vssadmin) fail or experience timeouts when there is a raw device // open for exclusive access. Therefore, exclusive access is used only for file-hosted volumes. // Applications requiring a consistent device image need to acquire exclusive write access first. This is prevented // when a device-hosted volume is mounted. exclusiveAccess = FALSE; } else { // Limit the maximum required buffer size if (mount->BytesPerSector > 128 * BYTES_PER_KB) { ntStatus = STATUS_INVALID_PARAMETER; goto error; } Extension->HostBytesPerSector = mount->BytesPerSector; Extension->HostBytesPerPhysicalSector = mount->BytesPerPhysicalSector; if (Extension->HostBytesPerSector != TC_SECTOR_SIZE_FILE_HOSTED_VOLUME) disableBuffering = FALSE; } // Open the volume hosting file/device if (!mount->bMountReadOnly) { ntStatus = ZwCreateFile (&Extension->hDeviceFile, GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, &oaFileAttributes, &IoStatusBlock, NULL, FILE_ATTRIBUTE_NORMAL | FILE_ATTRIBUTE_SYSTEM, exclusiveAccess ? 0 : FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_OPEN, FILE_RANDOM_ACCESS | FILE_WRITE_THROUGH | (disableBuffering ? FILE_NO_INTERMEDIATE_BUFFERING : 0) | FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0); } /* 26-4-99 NT for some partitions returns this code, it is really a access denied */ if (ntStatus == 0xc000001b) ntStatus = STATUS_ACCESS_DENIED; mount->VolumeMountedReadOnlyAfterAccessDenied = FALSE; if (mount->bMountReadOnly || ntStatus == STATUS_ACCESS_DENIED) { ntStatus = ZwCreateFile (&Extension->hDeviceFile, GENERIC_READ | SYNCHRONIZE, &oaFileAttributes, &IoStatusBlock, NULL, FILE_ATTRIBUTE_NORMAL | FILE_ATTRIBUTE_SYSTEM, exclusiveAccess ? FILE_SHARE_READ : FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_OPEN, FILE_RANDOM_ACCESS | FILE_WRITE_THROUGH | (disableBuffering ? FILE_NO_INTERMEDIATE_BUFFERING : 0) | FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0); if (NT_SUCCESS (ntStatus) && !mount->bMountReadOnly) mount->VolumeMountedReadOnlyAfterAccessDenied = TRUE; Extension->bReadOnly = TRUE; DeviceObject->Characteristics |= FILE_READ_ONLY_DEVICE; } else Extension->bReadOnly = FALSE; /* 26-4-99 NT for some partitions returns this code, it is really a access denied */ if (ntStatus == 0xc000001b) { /* Partitions which return this code can still be opened with FILE_SHARE_READ but this causes NT problems elsewhere in particular if you do FILE_SHARE_READ NT will die later if anyone even tries to open the partition (or file for that matter...) */ ntStatus = STATUS_SHARING_VIOLATION; } if (!NT_SUCCESS (ntStatus)) { goto error; } // If we have opened a file, query its size now if (bRawDevice == FALSE) { ntStatus = ZwQueryInformationFile (Extension->hDeviceFile, &IoStatusBlock, &FileBasicInfo, sizeof (FileBasicInfo), FileBasicInformation); if (NT_SUCCESS (ntStatus)) { if (mount->bPreserveTimestamp) { Extension->fileCreationTime = FileBasicInfo.CreationTime; Extension->fileLastAccessTime = FileBasicInfo.LastAccessTime; Extension->fileLastWriteTime = FileBasicInfo.LastWriteTime; Extension->fileLastChangeTime = FileBasicInfo.ChangeTime; Extension->bTimeStampValid = TRUE; } ntStatus = ZwQueryInformationFile (Extension->hDeviceFile, &IoStatusBlock, &FileStandardInfo, sizeof (FileStandardInfo), FileStandardInformation); } if (!NT_SUCCESS (ntStatus)) { Dump ("ZwQueryInformationFile failed while opening file: NTSTATUS 0x%08x\n", ntStatus); goto error; } lDiskLength.QuadPart = FileStandardInfo.EndOfFile.QuadPart; if (FileBasicInfo.FileAttributes & FILE_ATTRIBUTE_COMPRESSED) { Dump ("File \"%ls\" is marked as compressed - not supported!\n", pwszMountVolume); mount->nReturnCode = ERR_COMPRESSION_NOT_SUPPORTED; ntStatus = STATUS_SUCCESS; goto error; } ntStatus = ObReferenceObjectByHandle (Extension->hDeviceFile, FILE_ALL_ACCESS, *IoFileObjectType, KernelMode, &Extension->pfoDeviceFile, 0); if (!NT_SUCCESS (ntStatus)) { goto error; } /* Get the FSD device for the file (probably either NTFS or FAT) */ Extension->pFsdDevice = IoGetRelatedDeviceObject (Extension->pfoDeviceFile); } else { // Try to gain "raw" access to the partition in case there is a live filesystem on it (otherwise, // the NTFS driver guards hidden sectors and prevents mounting using a backup header e.g. after the user // accidentally quick-formats a dismounted partition-hosted TrueCrypt volume as NTFS). PFILE_OBJECT pfoTmpDeviceFile = NULL; if (NT_SUCCESS (ObReferenceObjectByHandle (Extension->hDeviceFile, FILE_ALL_ACCESS, *IoFileObjectType, KernelMode, &pfoTmpDeviceFile, NULL)) && pfoTmpDeviceFile != NULL) { TCFsctlCall (pfoTmpDeviceFile, FSCTL_ALLOW_EXTENDED_DASD_IO, NULL, 0, NULL, 0); ObDereferenceObject (pfoTmpDeviceFile); } } // Check volume size if (lDiskLength.QuadPart < TC_MIN_VOLUME_SIZE_LEGACY || lDiskLength.QuadPart > TC_MAX_VOLUME_SIZE) { mount->nReturnCode = ERR_VOL_SIZE_WRONG; ntStatus = STATUS_SUCCESS; goto error; } Extension->DiskLength = lDiskLength.QuadPart; Extension->HostLength = lDiskLength.QuadPart; readBuffer = TCalloc (max (max (TC_VOLUME_HEADER_EFFECTIVE_SIZE, PAGE_SIZE), Extension->HostBytesPerSector)); if (readBuffer == NULL) { ntStatus = STATUS_INSUFFICIENT_RESOURCES; goto error; } // Go through all volume types (e.g., normal, hidden) for (volumeType = TC_VOLUME_TYPE_NORMAL; volumeType < TC_VOLUME_TYPE_COUNT; volumeType++) { Dump ("Trying to open volume type %d\n", volumeType); /* Read the volume header */ if (!mount->bPartitionInInactiveSysEncScope || (mount->bPartitionInInactiveSysEncScope && volumeType == TC_VOLUME_TYPE_HIDDEN)) { // Header of a volume that is not within the scope of system encryption, or // header of a system hidden volume (containing a hidden OS) LARGE_INTEGER headerOffset; if (mount->UseBackupHeader && lDiskLength.QuadPart <= TC_TOTAL_VOLUME_HEADERS_SIZE) continue; switch (volumeType) { case TC_VOLUME_TYPE_NORMAL: headerOffset.QuadPart = mount->UseBackupHeader ? lDiskLength.QuadPart - TC_VOLUME_HEADER_GROUP_SIZE : TC_VOLUME_HEADER_OFFSET; break; case TC_VOLUME_TYPE_HIDDEN: if (lDiskLength.QuadPart <= TC_VOLUME_HEADER_GROUP_SIZE) continue; headerOffset.QuadPart = mount->UseBackupHeader ? lDiskLength.QuadPart - TC_HIDDEN_VOLUME_HEADER_OFFSET : TC_HIDDEN_VOLUME_HEADER_OFFSET; break; } Dump ("Reading volume header at %I64d\n", headerOffset.QuadPart); ntStatus = ZwReadFile (Extension->hDeviceFile, NULL, NULL, NULL, &IoStatusBlock, readBuffer, bRawDevice ? max (TC_VOLUME_HEADER_EFFECTIVE_SIZE, Extension->HostBytesPerSector) : TC_VOLUME_HEADER_EFFECTIVE_SIZE, &headerOffset, NULL); } else { // Header of a partition that is within the scope of system encryption WCHAR parentDrivePath [47+1] = {0}; HANDLE hParentDeviceFile = NULL; UNICODE_STRING FullParentPath; OBJECT_ATTRIBUTES oaParentFileAttributes; LARGE_INTEGER parentKeyDataOffset; RtlStringCbPrintfW (parentDrivePath, sizeof (parentDrivePath), WIDE ("\\Device\\Harddisk%d\\Partition0"), mount->nPartitionInInactiveSysEncScopeDriveNo); Dump ("Mounting partition within scope of system encryption (reading key data from: %ls)\n", parentDrivePath); RtlInitUnicodeString (&FullParentPath, parentDrivePath); InitializeObjectAttributes (&oaParentFileAttributes, &FullParentPath, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL); ntStatus = ZwCreateFile (&hParentDeviceFile, GENERIC_READ | SYNCHRONIZE, &oaParentFileAttributes, &IoStatusBlock, NULL, FILE_ATTRIBUTE_NORMAL | FILE_ATTRIBUTE_SYSTEM, FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_OPEN, FILE_RANDOM_ACCESS | FILE_WRITE_THROUGH | FILE_NO_INTERMEDIATE_BUFFERING | FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0); if (!NT_SUCCESS (ntStatus)) { if (hParentDeviceFile != NULL) ZwClose (hParentDeviceFile); Dump ("Cannot open %ls\n", parentDrivePath); goto error; } parentKeyDataOffset.QuadPart = TC_BOOT_VOLUME_HEADER_SECTOR_OFFSET; ntStatus = ZwReadFile (hParentDeviceFile, NULL, NULL, NULL, &IoStatusBlock, readBuffer, max (TC_VOLUME_HEADER_EFFECTIVE_SIZE, Extension->HostBytesPerSector), &parentKeyDataOffset, NULL); if (hParentDeviceFile != NULL) ZwClose (hParentDeviceFile); } if (!NT_SUCCESS (ntStatus) && ntStatus != STATUS_END_OF_FILE) { Dump ("Read failed: NTSTATUS 0x%08x\n", ntStatus); goto error; } if (ntStatus == STATUS_END_OF_FILE || IoStatusBlock.Information < TC_VOLUME_HEADER_EFFECTIVE_SIZE) { Dump ("Read didn't read enough data\n"); // If FSCTL_ALLOW_EXTENDED_DASD_IO failed and there is a live filesystem on the partition, then the // filesystem driver may report EOF when we are reading hidden sectors (when the filesystem is // shorter than the partition). This can happen for example after the user quick-formats a dismounted // partition-hosted TrueCrypt volume and then tries to mount the volume using the embedded backup header. memset (readBuffer, 0, TC_VOLUME_HEADER_EFFECTIVE_SIZE); } /* Attempt to recognize the volume (decrypt the header) */ ReadVolumeHeaderRecoveryMode = mount->RecoveryMode; if ((volumeType == TC_VOLUME_TYPE_HIDDEN) && mount->bProtectHiddenVolume) { mount->nReturnCode = ReadVolumeHeaderWCache ( FALSE, mount->bCache, mount->bCachePim, readBuffer, &mount->ProtectedHidVolPassword, mount->ProtectedHidVolPkcs5Prf, mount->ProtectedHidVolPim, mount->bTrueCryptMode, &tmpCryptoInfo); } else { mount->nReturnCode = ReadVolumeHeaderWCache ( mount->bPartitionInInactiveSysEncScope && volumeType == TC_VOLUME_TYPE_NORMAL, mount->bCache, mount->bCachePim, readBuffer, &mount->VolumePassword, mount->pkcs5_prf, mount->VolumePim, mount->bTrueCryptMode, &Extension->cryptoInfo); } ReadVolumeHeaderRecoveryMode = FALSE; if (mount->nReturnCode == 0 || mount->nReturnCode == ERR_CIPHER_INIT_WEAK_KEY) { /* Volume header successfully decrypted */ if (!Extension->cryptoInfo) { /* should never happen */ mount->nReturnCode = ERR_OUTOFMEMORY; ntStatus = STATUS_SUCCESS; goto error; } Dump ("Volume header decrypted\n"); Dump ("Required program version = %x\n", (int) Extension->cryptoInfo->RequiredProgramVersion); Dump ("Legacy volume = %d\n", (int) Extension->cryptoInfo->LegacyVolume); if (IsHiddenSystemRunning() && !Extension->cryptoInfo->hiddenVolume) { Extension->bReadOnly = mount->bMountReadOnly = TRUE; HiddenSysLeakProtectionCount++; } Extension->cryptoInfo->bProtectHiddenVolume = FALSE; Extension->cryptoInfo->bHiddenVolProtectionAction = FALSE; Extension->cryptoInfo->bPartitionInInactiveSysEncScope = mount->bPartitionInInactiveSysEncScope; /* compute the ID of this volume: SHA-512 of the effective header */ sha256 (Extension->volumeID, readBuffer, TC_VOLUME_HEADER_EFFECTIVE_SIZE); if (volumeType == TC_VOLUME_TYPE_NORMAL) { if (mount->bPartitionInInactiveSysEncScope) { if (Extension->cryptoInfo->EncryptedAreaStart.Value > (unsigned __int64) partitionStartingOffset || Extension->cryptoInfo->EncryptedAreaStart.Value + Extension->cryptoInfo->VolumeSize.Value <= (unsigned __int64) partitionStartingOffset) { // The partition is not within the key scope of system encryption mount->nReturnCode = ERR_PASSWORD_WRONG; ntStatus = STATUS_SUCCESS; goto error; } if (Extension->cryptoInfo->EncryptedAreaLength.Value != Extension->cryptoInfo->VolumeSize.Value) { // Partial encryption is not supported for volumes mounted as regular mount->nReturnCode = ERR_ENCRYPTION_NOT_COMPLETED; ntStatus = STATUS_SUCCESS; goto error; } } else if (Extension->cryptoInfo->HeaderFlags & TC_HEADER_FLAG_NONSYS_INPLACE_ENC) { if (Extension->cryptoInfo->EncryptedAreaLength.Value != Extension->cryptoInfo->VolumeSize.Value) { // Non-system in-place encryption process has not been completed on this volume mount->nReturnCode = ERR_NONSYS_INPLACE_ENC_INCOMPLETE; ntStatus = STATUS_SUCCESS; goto error; } } } Extension->cryptoInfo->FirstDataUnitNo.Value = 0; if (Extension->cryptoInfo->hiddenVolume && IsHiddenSystemRunning()) { // Prevent mount of a hidden system partition if the system hosted on it is currently running if (memcmp (Extension->cryptoInfo->master_keydata, GetSystemDriveCryptoInfo()->master_keydata, EAGetKeySize (Extension->cryptoInfo->ea)) == 0) { mount->nReturnCode = ERR_VOL_ALREADY_MOUNTED; ntStatus = STATUS_SUCCESS; goto error; } } switch (volumeType) { case TC_VOLUME_TYPE_NORMAL: Extension->cryptoInfo->hiddenVolume = FALSE; if (mount->bPartitionInInactiveSysEncScope) { Extension->cryptoInfo->volDataAreaOffset = 0; Extension->DiskLength = lDiskLength.QuadPart; Extension->cryptoInfo->FirstDataUnitNo.Value = partitionStartingOffset / ENCRYPTION_DATA_UNIT_SIZE; } else if (Extension->cryptoInfo->LegacyVolume) { Extension->cryptoInfo->volDataAreaOffset = TC_VOLUME_HEADER_SIZE_LEGACY; Extension->DiskLength = lDiskLength.QuadPart - TC_VOLUME_HEADER_SIZE_LEGACY; } else { Extension->cryptoInfo->volDataAreaOffset = Extension->cryptoInfo->EncryptedAreaStart.Value; Extension->DiskLength = Extension->cryptoInfo->VolumeSize.Value; } break; case TC_VOLUME_TYPE_HIDDEN: cryptoInfoPtr = mount->bProtectHiddenVolume ? tmpCryptoInfo : Extension->cryptoInfo; Extension->cryptoInfo->hiddenVolumeOffset = cryptoInfoPtr->EncryptedAreaStart.Value; Dump ("Hidden volume offset = %I64d\n", Extension->cryptoInfo->hiddenVolumeOffset); Dump ("Hidden volume size = %I64d\n", cryptoInfoPtr->hiddenVolumeSize); Dump ("Hidden volume end = %I64d\n", Extension->cryptoInfo->hiddenVolumeOffset + cryptoInfoPtr->hiddenVolumeSize - 1); // Validate the offset if (Extension->cryptoInfo->hiddenVolumeOffset % ENCRYPTION_DATA_UNIT_SIZE != 0) { mount->nReturnCode = ERR_VOL_SIZE_WRONG; ntStatus = STATUS_SUCCESS; goto error; } // If we are supposed to actually mount the hidden volume (not just to protect it) if (!mount->bProtectHiddenVolume) { Extension->DiskLength = cryptoInfoPtr->hiddenVolumeSize; Extension->cryptoInfo->hiddenVolume = TRUE; Extension->cryptoInfo->volDataAreaOffset = Extension->cryptoInfo->hiddenVolumeOffset; } else { // Hidden volume protection Extension->cryptoInfo->hiddenVolume = FALSE; Extension->cryptoInfo->bProtectHiddenVolume = TRUE; Extension->cryptoInfo->hiddenVolumeProtectedSize = tmpCryptoInfo->hiddenVolumeSize; Dump ("Hidden volume protection active: %I64d-%I64d (%I64d)\n", Extension->cryptoInfo->hiddenVolumeOffset, Extension->cryptoInfo->hiddenVolumeProtectedSize + Extension->cryptoInfo->hiddenVolumeOffset - 1, Extension->cryptoInfo->hiddenVolumeProtectedSize); } break; } Dump ("Volume data offset = %I64d\n", Extension->cryptoInfo->volDataAreaOffset); Dump ("Volume data size = %I64d\n", Extension->DiskLength); Dump ("Volume data end = %I64d\n", Extension->cryptoInfo->volDataAreaOffset + Extension->DiskLength - 1); if (Extension->DiskLength == 0) { Dump ("Incorrect volume size\n"); continue; } // If this is a hidden volume, make sure we are supposed to actually // mount it (i.e. not just to protect it) if (volumeType == TC_VOLUME_TYPE_NORMAL || !mount->bProtectHiddenVolume) { // Validate sector size if (bRawDevice && Extension->cryptoInfo->SectorSize != Extension->HostBytesPerSector) { mount->nReturnCode = ERR_PARAMETER_INCORRECT; ntStatus = STATUS_SUCCESS; goto error; } // Calculate virtual volume geometry Extension->TracksPerCylinder = 1; Extension->SectorsPerTrack = 1; Extension->BytesPerSector = Extension->cryptoInfo->SectorSize; Extension->NumberOfCylinders = Extension->DiskLength / Extension->BytesPerSector; Extension->PartitionType = 0; Extension->bRawDevice = bRawDevice; memset (Extension->wszVolume, 0, sizeof (Extension->wszVolume)); if (wcsstr (pwszMountVolume, WIDE ("\\??\\UNC\\")) == pwszMountVolume) { /* UNC path */ RtlStringCbPrintfW (Extension->wszVolume, sizeof (Extension->wszVolume), WIDE ("\\??\\\\%s"), pwszMountVolume + 7); } else { RtlStringCbCopyW (Extension->wszVolume, sizeof(Extension->wszVolume),pwszMountVolume); } memset (Extension->wszLabel, 0, sizeof (Extension->wszLabel)); RtlStringCbCopyW (Extension->wszLabel, sizeof(Extension->wszLabel), mount->wszLabel); } // If we are to protect a hidden volume we cannot exit yet, for we must also // decrypt the hidden volume header. if (!(volumeType == TC_VOLUME_TYPE_NORMAL && mount->bProtectHiddenVolume)) { TCfree (readBuffer); if (tmpCryptoInfo != NULL) { crypto_close (tmpCryptoInfo); tmpCryptoInfo = NULL; } return STATUS_SUCCESS; } } else if ((mount->bProtectHiddenVolume && volumeType == TC_VOLUME_TYPE_NORMAL) || mount->nReturnCode != ERR_PASSWORD_WRONG) { /* If we are not supposed to protect a hidden volume, the only error that is tolerated is ERR_PASSWORD_WRONG (to allow mounting a possible hidden volume). If we _are_ supposed to protect a hidden volume, we do not tolerate any error (both volume headers must be successfully decrypted). */ break; } } /* Failed due to some non-OS reason so we drop through and return NT SUCCESS then nReturnCode is checked later in user-mode */ if (mount->nReturnCode == ERR_OUTOFMEMORY) ntStatus = STATUS_INSUFFICIENT_RESOURCES; else ntStatus = STATUS_SUCCESS; error: if (mount->nReturnCode == ERR_SUCCESS) mount->nReturnCode = ERR_PASSWORD_WRONG; if (tmpCryptoInfo != NULL) { crypto_close (tmpCryptoInfo); tmpCryptoInfo = NULL; } if (Extension->cryptoInfo) { crypto_close (Extension->cryptoInfo); Extension->cryptoInfo = NULL; } if (Extension->bTimeStampValid) { RestoreTimeStamp (Extension); } /* Close the hDeviceFile */ if (Extension->hDeviceFile != NULL) ZwClose (Extension->hDeviceFile); /* The cryptoInfo pointer is deallocated if the readheader routines fail so there is no need to deallocate here */ /* Dereference the user-mode file object */ if (Extension->pfoDeviceFile != NULL) ObDereferenceObject (Extension->pfoDeviceFile); /* Free the tmp IO buffers */ if (readBuffer != NULL) TCfree (readBuffer); return ntStatus; } void TCCloseVolume (PDEVICE_OBJECT DeviceObject, PEXTENSION Extension) { UNREFERENCED_PARAMETER (DeviceObject); /* Remove compiler warning */ if (Extension->hDeviceFile != NULL) { if (Extension->bRawDevice == FALSE && Extension->bTimeStampValid) { RestoreTimeStamp (Extension); } ZwClose (Extension->hDeviceFile); } ObDereferenceObject (Extension->pfoDeviceFile); if (Extension->cryptoInfo) { crypto_close (Extension->cryptoInfo); Extension->cryptoInfo = NULL; } } NTSTATUS TCSendHostDeviceIoControlRequestEx (PDEVICE_OBJECT DeviceObject, PEXTENSION Extension, ULONG IoControlCode, void *InputBuffer, ULONG InputBufferSize, void *OutputBuffer, ULONG OutputBufferSize) { IO_STATUS_BLOCK IoStatusBlock; NTSTATUS ntStatus; PIRP Irp; UNREFERENCED_PARAMETER(DeviceObject); /* Remove compiler warning */ KeClearEvent (&Extension->keVolumeEvent); Irp = IoBuildDeviceIoControlRequest (IoControlCode, Extension->pFsdDevice, InputBuffer, InputBufferSize, OutputBuffer, OutputBufferSize, FALSE, &Extension->keVolumeEvent, &IoStatusBlock); if (Irp == NULL) { Dump ("IRP allocation failed\n"); return STATUS_INSUFFICIENT_RESOURCES; } // Disk device may be used by filesystem driver which needs file object IoGetNextIrpStackLocation (Irp) -> FileObject = Extension->pfoDeviceFile; ntStatus = IoCallDriver (Extension->pFsdDevice, Irp); if (ntStatus == STATUS_PENDING) { KeWaitForSingleObject (&Extension->keVolumeEvent, Executive, KernelMode, FALSE, NULL); ntStatus = IoStatusBlock.Status; } return ntStatus; } NTSTATUS TCSendHostDeviceIoControlRequest (PDEVICE_OBJECT DeviceObject, PEXTENSION Extension, ULONG IoControlCode, void *OutputBuffer, ULONG OutputBufferSize) { return TCSendHostDeviceIoControlRequestEx (DeviceObject, Extension, IoControlCode, NULL, 0, OutputBuffer, OutputBufferSize); } NTSTATUS COMPLETE_IRP (PDEVICE_OBJECT DeviceObject, PIRP Irp, NTSTATUS IrpStatus, ULONG_PTR IrpInformation) { Irp->IoStatus.Status = IrpStatus; Irp->IoStatus.Information = IrpInformation; UNREFERENCED_PARAMETER (DeviceObject); /* Remove compiler warning */ #if EXTRA_INFO if (!NT_SUCCESS (IrpStatus)) { PIO_STACK_LOCATION irpSp = IoGetCurrentIrpStackLocation (Irp); Dump ("COMPLETE_IRP FAILING IRP %ls Flags 0x%08x vpb 0x%08x NTSTATUS 0x%08x\n", TCTranslateCode (irpSp->MajorFunction), (ULONG) DeviceObject->Flags, (ULONG) DeviceObject->Vpb->Flags, IrpStatus); } else { PIO_STACK_LOCATION irpSp = IoGetCurrentIrpStackLocation (Irp); Dump ("COMPLETE_IRP SUCCESS IRP %ls Flags 0x%08x vpb 0x%08x NTSTATUS 0x%08x\n", TCTranslateCode (irpSp->MajorFunction), (ULONG) DeviceObject->Flags, (ULONG) DeviceObject->Vpb->Flags, IrpStatus); } #endif IoCompleteRequest (Irp, IO_NO_INCREMENT); return IrpStatus; } static void RestoreTimeStamp (PEXTENSION Extension) { NTSTATUS ntStatus; FILE_BASIC_INFORMATION FileBasicInfo; IO_STATUS_BLOCK IoStatusBlock; if (Extension->hDeviceFile != NULL && Extension->bRawDevice == FALSE && Extension->bReadOnly == FALSE && Extension->bTimeStampValid) { ntStatus = ZwQueryInformationFile (Extension->hDeviceFile, &IoStatusBlock, &FileBasicInfo, sizeof (FileBasicInfo), FileBasicInformation); if (!NT_SUCCESS (ntStatus)) { Dump ("ZwQueryInformationFile failed in RestoreTimeStamp: NTSTATUS 0x%08x\n", ntStatus); } else { FileBasicInfo.CreationTime = Extension->fileCreationTime; FileBasicInfo.LastAccessTime = Extension->fileLastAccessTime; FileBasicInfo.LastWriteTime = Extension->fileLastWriteTime; FileBasicInfo.ChangeTime = Extension->fileLastChangeTime; ntStatus = ZwSetInformationFile( Extension->hDeviceFile, &IoStatusBlock, &FileBasicInfo, sizeof (FileBasicInfo), FileBasicInformation); if (!NT_SUCCESS (ntStatus)) Dump ("ZwSetInformationFile failed in RestoreTimeStamp: NTSTATUS 0x%08x\n",ntStatus); } } } n754'>754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272