/
diskmodule.pas
executable file
·2025 lines (1843 loc) · 79 KB
/
diskmodule.pas
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unit diskmodule;
// this unit enables QuickHash to hash disk drives.
{$mode objfpc}{$H+} // {$H+} ensures strings are of unlimited size
interface
uses
{$ifdef UNIX}
process,
{$IFDEF UseCThreads}
cthreads,
{$ENDIF}
{$endif}
{$ifdef Windows}
Process, Windows, ActiveX, ComObj, Variants, comserv,
win32proc, GPTMBR, uGPT,
{$endif}
diskspecification, uProgress, Classes, SysUtils, FileUtil,
Forms, Controls, Graphics, LazUTF8, strutils,
Dialogs, StdCtrls, ComCtrls, ExtCtrls, Menus, DateTimePicker,
// New as of v2.8.0 - HashLib4Pascal Unit, superseeds DCPCrypt and part of Lazarus package system.
// Cryptographic algorithms
HlpHashFactory,
HlpIHash,
HlpIHashResult,
// Non-Cryptographic algorithms (new to v3.3.4)
HlpCRC;
type
{ TfrmDiskHashingModule }
TfrmDiskHashingModule = class(TForm)
btnRefreshDiskList: TButton;
btnStartHashing: TButton;
cbdisks: TComboBox;
cbLogFile: TCheckBox;
lblDiskHashSchedulerStatus: TLabel;
lblschedulertickboxDiskModule: TCheckBox;
comboHashChoice: TComboBox;
ledtComputedHash: TLabeledEdit;
GroupBox1: TGroupBox;
ImageList1: TImageList;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
Label5: TLabel;
ledtSelectedItem: TLabeledEdit;
lt: TLabel;
ls: TLabel;
lm: TLabel;
lv: TLabel;
menShowDiskManager: TMenuItem;
menShowDiskTechData: TMenuItem;
menHashDisk: TMenuItem;
PopupMenu1: TPopupMenu;
sdLogFile: TSaveDialog;
DiskHashingTimer: TTimer;
TreeView1: TTreeView;
DateTimePickerDiskModule: TDateTimePicker;
procedure btnAbortHashingClick(Sender: TObject);
procedure btnRefreshDiskListClick(Sender: TObject);
procedure btnStartHashingClick(Sender: TObject);
procedure cbLogFileChange(Sender: TObject);
procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
procedure FormCreate(Sender: TObject);
procedure lblschedulertickboxDiskModuleChange(Sender: TObject);
procedure ledtSelectedItemChange(Sender: TObject);
procedure menHashDiskClick(Sender: TObject);
procedure menShowDiskManagerClick(Sender: TObject);
procedure TreeView1SelectionChanged(Sender: TObject);
function InitialiseHashChoice(Sender : TObject) : Integer;
procedure cbdisksChange(Sender: TObject);
function GetDiskTechnicalSpecs(Sender: TObject) : Integer;
procedure GetDiskTechnicalSpecsLinux(Sender: TObject);
procedure InvokeDiskHashScheduler (Sender : TObject);
procedure CheckSchedule(DesiredStartTime : TDateTime);
private
{ private declarations }
public
BytesPerSector : integer;
StartHashing : boolean;
NullStrictConvert : boolean;
{ public declarations }
end;
var
frmDiskHashingModule: TfrmDiskHashingModule;
PhyDiskNode, PartitionNoNode, DriveLetterNode : TTreeNode;
HashChoice, ExecutionCount : integer;
slOffsetsOfHits : TStringList;
Stop : boolean;
{$ifdef Windows}
// These few functions are needed for traversing the attached disks in Windows.
// Much of the disk and partitions data is derived for display purposes from
// Credit to https://github.com/RRUZ/delphi-wmi-class-generator
// For the actual hashing functions, direct Windows API calls are used.
function ListDrives : boolean;
function GetWin32_DiskPartitionInfo() : boolean;
function GetWin32_PhysicalDiskInfo() : boolean;
function DriveTypeStr(DriveType:integer): string;
function VarStrNull(const V:OleVariant):string;
function GetWMIObject(const objectName: String): IDispatch;
function VarArrayToStr(const vArray: variant): string;
function RemoveLogicalVolPrefix(strPath : string; LongPathOverrideVal : string) : string;
procedure RtlGetNtVersionNumbers(out MajorVersion : DWORD;
out MinorVersion : DWORD;
out Build : DWORD);
stdcall; external 'ntdll.dll';
// Formatting functions
function GetDiskLengthInBytes(hSelectedDisk : THandle) : Int64;
function GetSectorSizeInBytes(hSelectedDisk : THandle) : Int64;
function GetJustDriveLetter(str : widestring) : string;
function GetDriveIDFromLetter(str : string) : Byte;
function GetOSName() : string;
// function GetVolumeName(DriveLetter: Char): string; DEPRECATED as of v3.3.0
{$endif}
{$ifdef Unix}
// These are Linux specific functions
procedure ListDrivesLinux();
function GetOSNameLinux() : string;
function GetBlockCountLinux(s : string) : string;
function GetBlockSizeLinux(DiskDevName : string) : Integer;
function GetDiskLabels(DiskDevName : string) : string;
function GetByteCountLinux(DiskDevName : string) : QWord;
{$endif}
function HashDisk(hDiskHandle : THandle; DiskSize : Int64; HashChoice : Integer) : Int64;
function FormatByteSize(const bytes: QWord): string;
function ExtractNumbers(s: string): string;
implementation
{$R *.lfm}
{ TfrmDiskHashingModule }
// Enable or disable elements depending on the OS hosting the application
procedure TfrmDiskHashingModule.FormCreate(Sender: TObject);
begin
Stop := false;
ExecutionCount := 0;
ledtComputedHash.Enabled := false;
{$ifdef CPU64}
comboHashChoice.Items.Strings[6] := 'xxHash64';
{$else if CPU32}
comboHashChoice.Items.Strings[6] := 'xxHash32';
{$endif}
ledtComputedHash.Enabled := false; // Blake 3
{$ifdef Windows}
// These are the Linux centric elements, so disable them on Windows
cbdisks.Enabled := false;
cbdisks.Visible := false;
Label1.Enabled := false;
Label1.Visible := false;
Label2.Enabled := false;
Label2.Visible := false;
Label3.Enabled := false;
Label3.Visible := false;
Label4.Enabled := false;
Label4.Visible := false;
Label5.Enabled := false;
Label5.Visible := false;
lv.Enabled := false;
lv.Visible := false;
lm.Enabled := false;
lm.Visible := false;
ls.Enabled := false;
ls.Visible := false;
lt.Enabled := false;
lt.Visible := false;
{$endif}
end;
procedure TfrmDiskHashingModule.lblschedulertickboxDiskModuleChange(
Sender: TObject);
begin
if lblschedulertickboxDiskModule.Checked then
begin
DateTimePickerDiskModule.Enabled := true;
DateTimePickerDiskModule.Visible := true;
end
else
begin
DateTimePickerDiskModule.Enabled := false;
DateTimePickerDiskModule.Visible := false;
end;
end;
procedure TfrmDiskHashingModule.ledtSelectedItemChange(Sender: TObject);
begin
end;
procedure TfrmDiskHashingModule.btnRefreshDiskListClick(Sender: TObject);
begin
NullStrictConvert := False; // Hopefully avoid "could not convert variant of type (Null) into type Int64" errors
{$ifdef Windows}
try
TreeView1.Items.Clear;
ListDrives;
finally
end;
{$endif}
{$ifdef UNIX}
try
Treeview1.Items.Clear;
ListDrivesLinux;
finally
end;
{$endif}
end;
procedure TfrmDiskHashingModule.btnStartHashingClick(Sender: TObject);
begin
diskmodule.Stop := false; // if a hash was previously run and aborted, the flag needs to be reset for run 2
if lblschedulertickboxDiskModule.Checked then
begin
InvokeDiskHashScheduler(self);
end;
menHashDiskClick(Sender);
end;
// Checks if the desired start date and time has arrived yet by starting timer
// If it has, disable timer. Otherwise, keep it going.
procedure TfrmDiskHashingModule.CheckSchedule(DesiredStartTime : TDateTime);
begin
if Now >= DesiredStartTime then
begin
DiskHashingTimer.Enabled := false;
StartHashing := true;
end
else
begin
DiskHashingTimer.Enabled := true;
StartHashing := false;
end;
end;
procedure TfrmDiskHashingModule.InvokeDiskHashScheduler (Sender : TObject);
var
scheduleStartTime : TDateTime;
begin
if DateTimePickerDiskModule.DateTime < Now then
begin
ShowMessage('Scheduled start time is in the past. Correct it.');
exit;
end
else begin
StartHashing := false;
scheduleStartTime := DateTimePickerDiskModule.DateTime;
lblDiskHashSchedulerStatus.Caption := 'Waiting....scheduled for a start time of ' + FormatDateTime('YY/MM/DD HH:MM', schedulestarttime);
// Set the interval as the milliseconds remaining until the future start time
DiskHashingTimer.Interval:= trunc((schedulestarttime - Now) * 24 * 60 * 60 * 1000);
// and then enable the timer
DiskHashingTimer.Enabled := true;
// and then check if current date and time is equal to desired scheduled date and time
repeat
Application.ProcessMessages;
CheckSchedule(scheduleStartTime);
until (StartHashing = true);
end;
end;
procedure TfrmDiskHashingModule.cbLogFileChange(Sender: TObject);
begin
if cbLogFile.Checked then cbLogFile.Caption:= 'Create and save a log file';
if not cbLogFile.Checked then cbLogFile.Caption:= 'No log file required.';
end;
procedure TfrmDiskHashingModule.btnAbortHashingClick(Sender: TObject);
begin
Stop := true;
if Stop = TRUE then
begin
ledtComputedHash.Text := 'Process aborted.';
Abort;
end;
end;
procedure TfrmDiskHashingModule.FormClose(Sender: TObject; var CloseAction: TCloseAction);
begin
end;
// Gets various disk properties like model, manufacturer etc, for Linux usage
// Returns a concatanated string for display in the Treeview
function GetDiskLabels(DiskDevName : string) : string;
const
smodel = 'ID_MODEL=';
sserial = 'ID_SERIAL_SHORT=';
stype = 'ID_TYPE=';
svendor = 'ID_VENDOR=';
var
DiskInfoProcess : TProcess;
diskinfo : TStringList;
i : Integer;
stmp, strModel, strVendor, strType, strSerial : String;
begin
strModel := '';
strVendor := '';
strType := '';
strSerial := '';
// Probe all attached disks and populate the interface
DiskInfoProcess:=TProcess.Create(nil);
DiskInfoProcess.Options:=[poWaitOnExit, poUsePipes];
DiskInfoProcess.CommandLine:='/sbin/udevadm info --query=property --name='+DiskDevName; //get info about selected disk
DiskInfoProcess.Execute;
diskinfo:=TStringList.Create;
diskinfo.LoadFromStream(DiskInfoProcess.Output);
for i:=0 to diskinfo.Count-1 do
begin
if pos(smodel, diskinfo.Strings[i])>0 then
begin
stmp:=diskinfo.Strings[i];
Delete(stmp, 1, Length(smodel));
if pos('_', stmp)>0 then
begin
strModel:=Copy(stmp, 1, pos('_', stmp)-1);
Delete(stmp, 1, pos('_', stmp));
strModel :=stmp;
if Length(strModel) = 0 then strModel := 'No Value';
end
else
strModel:=stmp;
end
else if pos(sserial, diskinfo.Strings[i])>0 then
begin
strSerial := Copy(diskinfo.Strings[i], Length(sserial)+1, Length(diskinfo.Strings[i])-Length(sserial));
if Length(strSerial) = 0 then strSerial := 'No Value';
end
else if pos(stype, diskinfo.Strings[i])>0 then
begin
strType := Copy(diskinfo.Strings[i], Length(stype)+1, Length(diskinfo.Strings[i])-Length(stype));
if Length(strType) = 0 then strType := 'No Value';
end
else if pos(svendor, diskinfo.Strings[i])>0 then
begin
strVendor := Copy(diskinfo.Strings[i], Length(svendor)+1, Length(diskinfo.Strings[i])-Length(svendor));
if Length(strVendor) = 0 then strVendor := 'No Value';
end;
end;
result := '(Model: ' + strModel + ', Serial No: ' + strSerial + ', Type: ' + strType + ', Vendor: ' + strVendor + ')';
end;
// Delete this eventually, once youre sure the Combo box is redundant
procedure TfrmDiskHashingModule.cbdisksChange(Sender: TObject);
const
smodel = 'ID_MODEL=';
sserial = 'ID_SERIAL_SHORT=';
stype = 'ID_TYPE=';
svendor = 'ID_VENDOR=';
var
DiskInfoProcess : TProcess;
DiskInfoProcessUDISKS : TProcess;
diskinfo, diskinfoUDISKS : TStringList;
i : Integer;
stmp : String;
begin
if cbdisks.ItemIndex<0 then
exit;
lv.Caption:='';
lm.Caption:='';
ls.Caption:='';
lt.Caption:='';
// Probe all attached disks and populate the interface
DiskInfoProcess:=TProcess.Create(nil);
DiskInfoProcess.Options:=[poWaitOnExit, poUsePipes];
DiskInfoProcess.CommandLine:='/sbin/udevadm info --query=property --name='+cbdisks.Text; //get info about selected disk
DiskInfoProcess.Execute;
diskinfo:=TStringList.Create;
diskinfo.LoadFromStream(DiskInfoProcess.Output);
for i:=0 to diskinfo.Count-1 do
begin
if pos(smodel, diskinfo.Strings[i])>0 then
begin
stmp:=diskinfo.Strings[i];
Delete(stmp, 1, Length(smodel));
if pos('_', stmp)>0 then
begin
lv.Caption:=Copy(stmp, 1, pos('_', stmp)-1);
Delete(stmp, 1, pos('_', stmp));
lm.Caption:=stmp;
end
else
lm.Caption:=stmp;
end
else if pos(sserial, diskinfo.Strings[i])>0 then
ls.Caption:=Copy(diskinfo.Strings[i], Length(sserial)+1, Length(diskinfo.Strings[i])-Length(sserial))
else if pos(stype, diskinfo.Strings[i])>0 then
lt.Caption:=Copy(diskinfo.Strings[i], Length(stype)+1, Length(diskinfo.Strings[i])-Length(stype))
else if pos(svendor, diskinfo.Strings[i])>0 then
begin
lm.Caption:=lv.Caption+' '+lm.Caption;
lv.Caption:=Copy(diskinfo.Strings[i], Length(svendor)+1, Length(diskinfo.Strings[i])-Length(svendor));
end;
end;
// Get all technical specifications about a user selected disk and save it
DiskInfoProcessUDISKS := TProcess.Create(nil);
DiskInfoProcessUDISKS.Options := [poWaitOnExit, poUsePipes];
DiskInfoProcessUDISKS.CommandLine := 'udisksctl info -b /dev/' + cbdisks.Text;
DiskInfoProcessUDISKS.Execute;
diskinfoUDISKS := TStringList.Create;
diskinfoUDISKS.LoadFromStream(diskinfoProcessUDISKS.Output);
diskinfoUDISKS.SaveToFile('TechnicalDiskDetails.txt');
// Free everything
diskinfo.Free;
diskinfoUDISKS.Free;
DiskInfoProcess.Free;
DiskInfoProcessUDISKS.Free;
end;
{$ifdef UNIX}
procedure ListDrivesLinux();
var
DisksProcess: TProcess;
i: Integer;
intPhysDiskSize, intLogDiskSize : QWord;
slDisklist: TSTringList;
PhyDiskNode, DriveLetterNode : TTreeNode;
strPhysDiskSize, strLogDiskSize, DiskDevName, DiskLabels, dmCryptDiscovered : string;
begin
intPhysDiskSize := 0;
DisksProcess:=TProcess.Create(nil);
DisksProcess.Options:=[poWaitOnExit, poUsePipes];
DisksProcess.CommandLine:='cat /proc/partitions'; //get all disks/partitions list
DisksProcess.Execute;
slDisklist:=TStringList.Create;
slDisklist.LoadFromStream(DisksProcess.Output);
slDisklist.Delete(0); //delete columns name line
slDisklist.Delete(0); //delete separator line
//cbdisks.Items.Clear;
frmDiskHashingModule.Treeview1.Images := frmDiskHashingModule.ImageList1;
PhyDiskNode := frmDiskHashingModule.TreeView1.Items.Add(nil,'Physical Disk') ;
PhyDiskNode.ImageIndex := 0;
DriveLetterNode := frmDiskHashingModule.TreeView1.Items.Add(nil,'Logical Volume') ;
DriveLetterNode.ImageIndex := 1;
// List physical disks, e.g. sda, sdb, hda, hdb etc
for i:=0 to slDisklist.Count-1 do
begin
if Length(Copy(slDisklist.Strings[i], 26, Length(slDisklist.Strings[i])-25))=3 then
begin
DiskDevName := '/dev/' + Trim(RightStr(slDisklist.Strings[i], 3));
DiskLabels := GetDiskLabels(DiskDevName);
intPhysDiskSize := GetByteCountLinux(DiskDevName);
strPhysDiskSize := FormatByteSize(intPhysDiskSize);
frmDiskHashingModule.TreeView1.Items.AddChild(PhyDiskNode, DiskDevName + ' | ' + strPhysDiskSize + ' ('+IntToStr(intPhysDiskSize)+' bytes) ' + DiskLabels);
end;
end;
// List Logical drives (partitions), e.g. sda1, sdb2, hda1, hdb2 etc
for i:=0 to slDisklist.Count-1 do
begin
dmCryptDiscovered := '';
if Length(Copy(slDisklist.Strings[i], 26, Length(slDisklist.Strings[i])-25))=4 then
begin
DiskDevName := '/dev/' + Trim(RightStr(slDisklist.Strings[i], 4));
DiskLabels := GetDiskLabels(DiskDevName);
if Pos('/dm', DiskDevName) > 0 then
begin
dmCryptDiscovered := '*** mounted dmCrypt drive! ***';
end;
intLogDiskSize := GetByteCountLinux(DiskDevName);
strLogDiskSize := FormatByteSize(intLogDiskSize);
frmDiskHashingModule.TreeView1.Items.AddChild(DriveLetterNode, DiskDevName + ' | ' + strLogDiskSize + ' ('+IntToStr(intLogDiskSize)+' bytes)' + dmCryptDiscovered +' ' + DiskLabels);
end;
end;
frmDiskHashingModule.Treeview1.AlphaSort;
slDisklist.Free;
DisksProcess.Free;
end;
// Returns a string holding the disk block COUNT (not size) as extracted from the string from
// /proc/partitions. e.g. : 8 0 312571224 sda
function GetBlockCountLinux(s : string) : string;
var
strBlockCount : string;
StartPos, EndPos : integer;
begin
strBlockCount := '';
StartPos := 0;
EndPos := 0;
EndPos := RPos(Chr($20), s);
StartPos := RPosEx(Chr($20), s, EndPos-1);
strBlockCount := Copy(s, StartPos, EndPos-StartPos);
result := strBlockCount;
end;
function GetBlockSizeLinux(DiskDevName : string) : Integer;
var
DiskProcess: TProcess;
i : Integer;
slDevDisk: TSTringList;
strBlockSize : string;
begin
result := 0;
DiskProcess:=TProcess.Create(nil);
DiskProcess.Options:=[poWaitOnExit, poUsePipes];
DiskProcess.CommandLine:='udisksctl info -b ' + DiskDevName; //get all disks/partitions list
DiskProcess.Execute;
slDevDisk := TStringList.Create;
slDevDisk.LoadFromStream(DiskProcess.Output);
for i := 0 to slDevDisk.Count -1 do
begin
if pos('block size:', slDevDisk.Strings[i]) > 0 then
begin
strBlockSize := RightStr(slDevDisk.Strings[i], 4);
if Length(strBlockSize) > 0 then result := StrToInt(strBlockSize);
end;
end;
end;
// Extracts the byte value "Size: " from the output of udisksctl info -b /dev/sdX
function GetByteCountLinux(DiskDevName : string) : QWord;
var
DiskProcess : TProcess;
i : Integer;
slDevDisk : TSTringList;
strByteCount : string;
ScanDiskData : boolean;
intByteCount : QWord;
begin
ScanDiskData := false;
result := 0;
intByteCount := 0;
strByteCount := '';
DiskProcess:=TProcess.Create(nil);
DiskProcess.Options:=[poWaitOnExit, poUsePipes];
DiskProcess.CommandLine:='udisksctl info -b ' + DiskDevName; //get all disks/partitions list
DiskProcess.Execute;
slDevDisk := TStringList.Create;
slDevDisk.LoadFromStream(DiskProcess.Output);
for i := 0 to slDevDisk.Count -1 do
begin
// Search for 'Size:' in the output, but note there are two values.
// This function only wants the first value, so abort once it's found
if (pos('Size:', slDevDisk.Strings[i]) > 0) and (ScanDiskData = false) then
begin
ScanDiskData := true;
strByteCount := ExtractNumbers(slDevDisk.Strings[i]);
if Length(strByteCount) > 0 then
begin
intByteCount := StrToQWord(strByteCount);
result := intByteCount;
end;
end;
end;
slDevDisk.free;
end;
{$endif}
// For extracting the disk size value from the output of udisksctl (from udisk2 package) on Linux
function ExtractNumbers(s: string): string;
var
i: Integer ;
begin
Result := '' ;
for i := 1 to length(s) do
begin
if s[i] in ['0'..'9'] then
Result := Result + s[i];
end;
end;
// Returns the exact disk size for BOTH physical disks and logical drives as
// reported by the Windows API and is used during the reading stage
function GetDiskLengthInBytes(hSelectedDisk : THandle) : Int64;
{$ifdef Windows}
const
// These are defined at the MSDN.Microsoft.com website for DeviceIOControl
// and https://forum.tuts4you.com/topic/22361-deviceiocontrol-ioctl-codes/
{
IOCTL_DISK_GET_DRIVE_GEOMETRY = $0070000
IOCTL_DISK_GET_PARTITION_INFO = $0074004
IOCTL_DISK_SET_PARTITION_INFO = $007C008
IOCTL_DISK_GET_DRIVE_LAYOUT = $007400C
IOCTL_DISK_SET_DRIVE_LAYOUT = $007C010
IOCTL_DISK_VERIFY = $0070014
IOCTL_DISK_FORMAT_TRACKS = $007C018
IOCTL_DISK_REASSIGN_BLOCKS = $007C01C
IOCTL_DISK_PERFORMANCE = $0070020
IOCTL_DISK_IS_WRITABLE = $0070024
IOCTL_DISK_LOGGING = $0070028
IOCTL_DISK_FORMAT_TRACKS_EX = $007C02C
IOCTL_DISK_HISTOGRAM_STRUCTURE = $0070030
IOCTL_DISK_HISTOGRAM_DATA = $0070034
IOCTL_DISK_HISTOGRAM_RESET = $0070038
IOCTL_DISK_REQUEST_STRUCTURE = $007003C
IOCTL_DISK_REQUEST_DATA = $0070040
IOCTL_DISK_CONTROLLER_NUMBER = $0070044
IOCTL_DISK_GET_PARTITION_INFO_EX = $0070048
IOCTL_DISK_SET_PARTITION_INFO_EX = $007C04C
IOCTL_DISK_GET_DRIVE_LAYOUT_EX = $0070050
IOCTL_DISK_SET_DRIVE_LAYOUT_EX = $007C054
IOCTL_DISK_CREATE_DISK = $007C058
IOCTL_DISK_GET_LENGTH_INFO = $007405C // Our constant...
SMART_GET_VERSION = $0074080
SMART_SEND_DRIVE_COMMAND = $007C084
SMART_RCV_DRIVE_DATA = $007C088
IOCTL_DISK_GET_DRIVE_GEOMETRY_EX = $00700A0
IOCTL_DISK_UPDATE_DRIVE_SIZE = $007C0C8
IOCTL_DISK_GROW_PARTITION = $007C0D0
IOCTL_DISK_GET_CACHE_INFORMATION = $00740D4
IOCTL_DISK_SET_CACHE_INFORMATION = $007C0D8
IOCTL_DISK_GET_WRITE_CACHE_STATE = $00740DC
IOCTL_DISK_DELETE_DRIVE_LAYOUT = $007C100
IOCTL_DISK_UPDATE_PROPERTIES = $0070140
IOCTL_DISK_FORMAT_DRIVE = $007C3CC
IOCTL_DISK_SENSE_DEVICE = $00703E0
IOCTL_DISK_INTERNAL_SET_VERIFY = $0070403
IOCTL_DISK_INTERNAL_CLEAR_VERIFY = $0070407
IOCTL_DISK_INTERNAL_SET_NOTIFY = $0070408
IOCTL_DISK_CHECK_VERIFY = $0074800
IOCTL_DISK_MEDIA_REMOVAL = $0074804
IOCTL_DISK_EJECT_MEDIA = $0074808
IOCTL_DISK_LOAD_MEDIA = $007480C
IOCTL_DISK_RESERVE = $0074810
IOCTL_DISK_RELEASE = $0074814
IOCTL_DISK_FIND_NEW_DEVICES = $0074818
IOCTL_DISK_GET_MEDIA_TYPES = $0070C00
}
// For physical disk access
IOCTL_DISK_GET_LENGTH_INFO = $0007405C;
type
TDiskLength = packed record
Length : Int64;
end;
var
ByteSize: int64;
BytesReturned: DWORD;
DLength: TDiskLength;
{$endif}
begin
result := 0;
{$ifdef Windows}
ByteSize := 0;
BytesReturned := 0;
DLength := Default(TDiskLength);
// https://msdn.microsoft.com/en-us/library/aa365178%28v=vs.85%29.aspx
if not DeviceIOControl(hSelectedDisk,
IOCTL_DISK_GET_LENGTH_INFO,
nil,
0,
@DLength,
SizeOf(TDiskLength),
BytesReturned,
nil)
then raise Exception.Create('Unable to initiate IOCTL_DISK_GET_LENGTH_INFO.');
if DLength.Length > 0 then ByteSize := DLength.Length;
result := ByteSize;
{$endif}
{$ifdef UNIX}
// TODO : How to get physical disk size in Linux
{$endif}
end;
// Obtains the name of the host OS for embedding into the E01 image
// http://free-pascal-lazarus.989080.n3.nabble.com/Lazarus-WindowsVersion-td4032307.html
function GetOSNameLinux() : string;
var
OSVersion : string;
begin
// TODO : add an lsb_release parser for Linux distro specifics
OSVersion := 'Linux ';
result := OSVersion;
end;
// Returns a human readable view of the number of bytes as Mb, Gb Tb, etc
function FormatByteSize(const bytes: QWord): string;
var
B: byte;
KB: word;
MB: QWord;
GB: QWord;
TB: QWord;
begin
B := 1; //byte
KB := 1024 * B; //kilobyte
MB := 1024 * KB; //megabyte
GB := 1024 * MB; //gigabyte
TB := 1024 * GB; //terabyte
if bytes > TB then
result := FormatFloat('#.## TiB', bytes / TB)
else
if bytes > GB then
result := FormatFloat('#.## GiB', bytes / GB)
else
if bytes > MB then
result := FormatFloat('#.## MiB', bytes / MB)
else
if bytes > KB then
result := FormatFloat('#.## KiB', bytes / KB)
else
if bytes > B then
result := FormatFloat('#.## bytes', bytes)
else
if bytes = 0 then
result := '0 bytes';
end;
procedure TfrmDiskHashingModule.TreeView1SelectionChanged(Sender: TObject);
var
strDriveLetter, strPhysicalDiskID : string;
begin
if (Sender is TTreeView) and Assigned(TTreeview(Sender).Selected) then
begin
if (TTreeView(Sender).Selected.Text = 'Physical Disk')
or (TTreeView(Sender).Selected.Text = 'Logical Volume') then
ledtSelectedItem.Text := '...'
else
// If the user Chooses "Drive E:", adjust the selection to "E:" for the Thandle initiation
// We just copy the characters following "Drive ".
if Pos('Drive', TTreeView(Sender).Selected.Text) > 0 then
begin
strDriveLetter := '\\?\'+Trim(Copy(TTreeView(Sender).Selected.Text, 6, 3));
ledtSelectedItem.Text := strDriveLetter;
end
// If the user chooses a physical disk, adjust the friendly displayed version
// to an actual low level name the OS can initiate a handle to
else if Pos('\\.\PHYSICALDRIVE', TTreeView(Sender).Selected.Text) > 0 then
begin
// "\\.\PHYSICALDRIVE" = 17 chars, and up to '25' disks allocated so a further
// 2 chars for that, so 19 chars ibn total.
strPhysicalDiskID := Trim(Copy(TTreeView(Sender).Selected.Text, 0, 19));
ledtSelectedItem.Text := strPhysicalDiskID;
end
// This is a simple Linux only 'else if' that will catch physical and logical
else if (Pos('/dev/sd', TTreeView(Sender).Selected.Text) > 0) or (Pos('/dev/hd', TTreeView(Sender).Selected.Text) > 0) then
begin
// "/dev/sd" = 7 chars, and up to '25' disks allocated so a further
// 2 chars for that, s 9 chars in total.
strPhysicalDiskID := Trim(Copy(TTreeView(Sender).Selected.Text, 0, 9));
ledtSelectedItem.Text := strPhysicalDiskID;
end;
end;
end;
// Assigns numeric value to hash algorithm choice to make if else statements used later, faster
function TfrmDiskHashingModule.InitialiseHashChoice(Sender : TObject) : Integer;
begin
result := -1;
if comboHashChoice.Text = 'MD5' then
begin
result := 1;
end
else if comboHashChoice.Text = 'SHA-1' then
begin
result := 2;
end
else if comboHashChoice.Text = 'MD5 & SHA-1' then
begin
result := 3;
end
else if comboHashChoice.Text = 'SHA256' then
begin
result := 4;
end
else if comboHashChoice.Text = 'SHA512' then
begin
result := 5;
end
else if comboHashChoice.Text = 'SHA-1 & SHA256' then
begin
result := 6;
end
else if (comboHashChoice.Text = 'xxHash32') or (comboHashChoice.Text = 'xxHash64') then
begin
result := 7;
end
else if comboHashChoice.Text = 'Blake3' then
begin
result := 8;
end
else if comboHashChoice.Text = 'CRC32' then
begin
result := 9;
end
else result := 10;
end;
// Get the technical disk data for a specifically selected disk. Returns 1 on success
// -1 otherwise
function TfrmDiskHashingModule.GetDiskTechnicalSpecs(Sender : TObject) : integer;
{
https://msdn.microsoft.com/en-us/library/aa394132%28v=vs.85%29.aspx
uint32 BytesPerSector;
uint64 DefaultBlockSize;
string Description;
datetime InstallDate;
string InterfaceType;
uint32 LastErrorCode;
string Model;
uint32 Partitions;
uint32 SectorsPerTrack;
string SerialNumber;
uint32 Signature;
uint64 Size;
string Status;
uint64 TotalCylinders;
uint32 TotalHeads;
uint64 TotalSectors;
uint64 TotalTracks;
uint32 TracksPerCylinder;
}
{$ifdef Windows}
var
FSWbemLocator : Variant;
objWMIService : Variant;
colDiskDrivesWin32DiskDrive : Variant;
oEnumDiskDrive : IEnumvariant;
// http://forum.lazarus.freepascal.org/index.php?topic=24490.0
objdiskDrive : OLEVariant; // Changed from variant to OLE Variant for FPC 3.0.
nrValue : LongWord; // Added to replace nil pointer for FPC 3.0
nr : LongWord absolute nrValue; // FPC 3.0 requires IEnumvariant.next to supply a longword variable for # returned values
ReportedSectors, DefaultBlockSize, Size, TotalCylinders, TotalTracks : Int64;
Partitions, SectorsPerTrack,
WinDiskSignature, TotalHeads, TracksPerCylinder : integer;
Description, InterfaceType, Model, SerialNumber,
Status, DiskName, WinDiskSignatureHex, MBRorGPT, GPTData: ansistring;
SelectedDisk : widestring;
slDiskSpecs : TStringList;
{$endif}
begin
result := -1;
{$ifdef Unix}
GetDiskTechnicalSpecsLinux(Sender);
{$endif}
{$ifdef Windows}
DiskName := '';
Size := 0;
TotalHeads := 0;
TotalCylinders := 0;
BytesPerSector := 0;
WinDiskSignature := 0;
TotalHeads := 0;
TotalTracks := 0;
TotalCylinders := 0;
TracksPerCylinder:= 0;
DefaultBlockSize := 0;
Status := '';
Model := '';
Description := '';
InterfaceType := '';
SerialNumber := '';
SelectedDisk := '';
Partitions := 0;
GPTData := '';
frmTechSpecs.Memo1.Clear;
if Pos('\\.\PHYSICALDRIVE', TreeView1.Selected.Text) > 0 then
begin
// "\\.\PHYSICALDRIVE" = 17 chars, and up to '25' disks allocated so a further
// 2 chars for that, so 19 chars ibn total.
SelectedDisk := Trim(Copy(TreeView1.Selected.Text, 0, 19));
// Determine if it a MBR or GPT partitioned disk. Call GPTMBR and uGPT units...
MBRorGPT := MBR_or_GPT(SelectedDisk);
if Pos('GPT', MBRorGPT) > 0 then
begin
GPTData := QueryGPT(SelectedDisk);
end;
// Now ensure the disk string is suitable for WMI and and so on
SelectedDisk := ANSIToUTF8(Trim(StringReplace(SelectedDisk,'\','\\',[rfReplaceAll])));
// Years from now, when this makes no sense, just remember that WMI wants a widestring!!!!
// Dont spend hours of your life again trying to work that undocumented aspect out.
FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
objWMIService := FSWbemLocator.ConnectServer('localhost', 'root\CIMV2', '', '');
colDiskDrivesWin32DiskDrive := objWMIService.ExecQuery('SELECT * FROM Win32_DiskDrive WHERE DeviceID="'+SelectedDisk+'"', 'WQL');
oEnumDiskDrive := IUnknown(colDiskDrivesWin32DiskDrive._NewEnum) as IEnumVariant;
// Parse the Win32_Diskdrive WMI.
while oEnumDiskDrive.Next(1, objdiskDrive, nr) = 0 do
begin
// Using VarIsNull ensures null values are just not parsed rather than errors being generated.
if not VarIsNull(objdiskDrive.TotalSectors) then ReportedSectors := objdiskDrive.TotalSectors;
if not VarIsNull(objdiskDrive.BytesPerSector) then BytesPerSector := objdiskDrive.BytesPerSector;
if not VarIsNull(objdiskDrive.Description) then Description := objdiskDrive.Description;
if not VarIsNull(objdiskDrive.InterfaceType) then InterfaceType := objdiskDrive.InterfaceType;
if not VarIsNull(objdiskDrive.Model) then Model := objdiskDrive.Model;
if not VarIsNull(objdiskDrive.Name) then DiskName := objdiskDrive.Name;
if not VarIsNull(objdiskDrive.Partitions) then Partitions := objdiskDrive.Partitions;
if not VarIsNull(objdiskDrive.SectorsPerTrack) then SectorsPerTrack := objdiskDrive.SectorsPerTrack;
if not VarIsNull(objdiskDrive.Signature) then WinDiskSignature:= objdiskDrive.Signature; // also returned by MBR_or_GPT function
if not VarIsNull(objdiskDrive.Size) then Size := objdiskDrive.Size;
if not VarIsNull(objdiskDrive.Status) then Status := objdiskDrive.Status;
if not VarIsNull(objdiskDrive.TotalCylinders) then TotalCylinders := objdiskDrive.TotalCylinders;
if not VarIsNull(objdiskDrive.TotalHeads) then TotalHeads := objdiskDrive.TotalHeads;
if not VarIsNull(objdiskDrive.TotalTracks) then TotalTracks := objdiskDrive.TotalTracks;
if not VarIsNull(objdiskDrive.TracksPerCylinder) then TracksPerCylinder:= objdiskDrive.TracksPerCylinder;
if not VarIsNull(objdiskDrive.DefaultBlockSize) then DefaultBlockSize:= objdiskDrive.DefaultBlockSize;
//if not VarIsNull(objdiskDrive.Manufacturer) then Manufacturer := objdiskDrive.Manufacturer; WMI just reports "Standard Disk Drives"
if not VarIsNull(objdiskDrive.SerialNumber) then SerialNumber := objdiskDrive.SerialNumber;
WinDiskSignatureHex := IntToHex(SwapEndian(WinDiskSignature), 8);
if Size > 0 then
begin
slDiskSpecs := TStringList.Create;
slDiskSpecs.Add('Disk ID: ' + DiskName);
slDiskSpecs.Add('Bytes per Sector: ' + IntToStr(BytesPerSector));
slDiskSpecs.Add('Description: ' + Description);
slDiskSpecs.Add('Interface type: ' + InterfaceType);
slDiskSpecs.Add('Model: ' + Model);
//slDiskSpecs.Add('Manufacturer: ' + Manufacturer);
slDiskSpecs.Add('MBR or GPT? ' + MBRorGPT);
slDiskSpecs.Add('No of Partitions: ' + IntToStr(Partitions));
slDiskSpecs.Add('Serial Number: ' + SerialNumber);
slDiskSpecs.Add('Windows Disk Signature (from offset 440d): ' + WinDiskSignatureHex);
slDiskSpecs.Add('Size: ' + IntToStr(Size) + ' bytes (' + FormatByteSize(Size) + ').');
slDiskSpecs.Add('Status: ' + Status);
slDiskSpecs.Add('Cylinders: ' + IntToStr(TotalCylinders));
slDiskSpecs.Add('Heads: ' + IntToStr(TotalHeads));
slDiskSpecs.Add('Reported Sectors: ' + IntToStr(ReportedSectors));
slDiskSpecs.Add('Tracks: ' + IntToStr(TotalTracks));
slDiskSpecs.Add('Sectors per Track: ' + IntToStr(SectorsPerTrack));
slDiskSpecs.Add('Tracks per Cylinder: ' + IntToStr(TracksPerCylinder));
slDiskSpecs.Add('Default Block Size: ' + IntToStr(DefaultBlockSize));
slDiskSpecs.Add('= = = = = = = = = = = = = = = = = = =');
// Only add GPT related data if GPT partitioning was detected earlier
if Pos('GPT', MBRorGPT) > 0 then
begin
slDiskSpecs.Add('GPT Partition Data (if found) : ');
slDiskSpecs.Add(' ');
slDiskSpecs.Add(GPTData);
end;
result := 1;
frmTechSpecs.Memo1.Lines.AddText(slDiskSpecs.Text);
frmTechSpecs.Show;
slDiskSpecs.Free;
end
else result := -1;
end;
objdiskDrive:=Unassigned;
end; // end of if PHYSICAL DRIVEX
// If the user tries to generate such data for a logical volume, tell him he can't yet.
// TODO : Add detailed offset parameters for partitions and such
if Pos('Drive', TreeView1.Selected.Text) > 0 then
begin
ShowMessage('Logical volume details are not available yet. Maybe in the future. ');
end;
{$endif}
end;