Problem beim auslesen der Festplatten Seriennummer

[Hanzmeierschulz]

Hi dbdeath74,
hab dir die Datei hddinfo.pas angehangen. Die Original-Version ist nicht von mir, habe aber diese so angepasst, dass sie nun auch unter NoAdmin-Rechten läuft (getestet mit Gast-Rechten) und ein paar Fehler behoben.

Delphi-Quellcode:

unit hddinfo;

interface

uses Windows, SysUtils, Classes;

const
  IOCTL_STORAGE_QUERY_PROPERTY = $2D1400;

type
THDDInfo = class (TObject)
private
  FDriveNumber: Byte;
  FFileHandle: Cardinal;
  FInfoAvailable: Boolean;
  FProductRevision: string;
  FProductId: string;
  FSerialNumber: string;
  FVendorId: string;
  procedure ReadInfo;
  procedure SetDriveNumber(const Value: Byte);
public
  constructor Create;
  property DriveNumber: Byte read FDriveNumber write SetDriveNumber;
  property VendorId: string read FVendorId;
  property ProductId: string read FProductId;
  property ProductRevision: string read FProductRevision;
  property SerialNumber: string read FSerialNumber;
  function SerialNumberInt: Cardinal;
  function SerialNumberText: string;
  function IsInfoAvailable: Boolean;
end;

implementation

type

STORAGE_PROPERTY_QUERY = packed record
  PropertyId: DWORD;
  QueryType: DWORD;
  AdditionalParameters: array[0..3] of Byte;
end;

STORAGE_DEVICE_DESCRIPTOR = packed record
  Version: ULONG;
  Size: ULONG;
  DeviceType: Byte;
  DeviceTypeModifier: Byte;
  RemovableMedia: Boolean;
  CommandQueueing: Boolean;
  VendorIdOffset: ULONG;
  ProductIdOffset: ULONG;
  ProductRevisionOffset: ULONG;
  SerialNumberOffset: ULONG;
  STORAGE_BUS_TYPE: DWORD;
  RawPropertiesLength: ULONG;
  RawDeviceProperties: array[0..511] of Byte;
end;

function ByteToChar(const B: Byte): Char;
begin
  Result := Chr(B + $30)
end;

function SerialNumberToCardinal (SerNum: String): Cardinal;
begin
  HexToBin(PChar(SerNum), PChar(@Result), SizeOf(Cardinal));
end;

function SerialNumberToString(SerNum: String): String;
var
  I, StrLen: Integer;
  Pair: string;
  B: Byte;
  Ch: Char absolute B;

begin
  Result := '';
  StrLen := Length(SerNum);

  if Odd(StrLen) then Exit;

  I := 1;

  while I < StrLen do
  begin
    Pair := Copy (SerNum, I, 2);
    HexToBin(PChar(Pair), PChar(@B), 1);
    Result := Result + Chr(B);
    Inc(I, 2);
  end;

  I := 1;

  while I < Length(Result) do
  begin
    Ch := Result[I];
    Result[I] := Result[I + 1];
    Result[I + 1] := Ch;
    Inc(I, 2);
  end;
end;

constructor THddInfo.Create;
begin
  inherited;

  SetDriveNumber(0);
end;

function THDDInfo.IsInfoAvailable: Boolean;
begin
  Result := FInfoAvailable
end;

procedure THDDInfo.ReadInfo;
type
  PCharArray = ^TCharArray;
  TCharArray = array[0..32767] of Char;

var
  Returned: Cardinal;
  Status: LongBool;
  PropQuery: STORAGE_PROPERTY_QUERY;
  DeviceDescriptor: STORAGE_DEVICE_DESCRIPTOR;
  PCh: PChar;

begin
  FInfoAvailable := False;
  FProductRevision := '';
  FProductId := '';
  FSerialNumber := '';
  FVendorId := '';

  try
    FFileHandle := CreateFile(
                     PChar('\\.\PhysicalDrive' + ByteToChar(FDriveNumber)),
                     0,
                     FILE_SHARE_READ or FILE_SHARE_WRITE,
                     nil,
                     OPEN_EXISTING,
                     0,
                     0
                   );

    if FFileHandle = INVALID_HANDLE_VALUE then RaiseLastOSError;

    ZeroMemory(@PropQuery, SizeOf(PropQuery));
    ZeroMemory(@DeviceDescriptor, SizeOf(DeviceDescriptor));

    DeviceDescriptor.Size := SizeOf(DeviceDescriptor);

    Status := DeviceIoControl(
                FFileHandle,
                IOCTL_STORAGE_QUERY_PROPERTY,
                @PropQuery,
                SizeOf(PropQuery),
                @DeviceDescriptor,
                DeviceDescriptor.Size,
                Returned,
                nil
              );

    if not Status then RaiseLastOSError;

    if DeviceDescriptor.VendorIdOffset <> 0 then
    begin
      PCh := @PCharArray(@DeviceDescriptor)^[DeviceDescriptor.VendorIdOffset];
      FVendorId := PCh;
    end;

    if DeviceDescriptor.ProductIdOffset <> 0 then
    begin
      PCh := @PCharArray(@DeviceDescriptor)^[DeviceDescriptor.ProductIdOffset];
      FProductId := PCh;
    end;

    if DeviceDescriptor.ProductRevisionOffset <> 0 then
    begin
      PCh := @PCharArray(@DeviceDescriptor)^[DeviceDescriptor.ProductRevisionOffset];
      FProductRevision := PCh;
    end;

    if DeviceDescriptor.SerialNumberOffset <> 0 then
    begin
      PCh := @PCharArray(@DeviceDescriptor)^[DeviceDescriptor.SerialNumberOffset];
      FSerialNumber := PCh;
    end;

    FInfoAvailable := True;
  finally
    if FFileHandle <> INVALID_HANDLE_VALUE then CloseHandle(FFileHandle);
  end;
end;

function THDDInfo.SerialNumberInt: Cardinal;
begin
  Result := 0;
  if ((IsInfoAvailable = True) and (FSerialNumber <> '')) then Result := SerialNumberToCardinal(FSerialNumber)
end;

function THDDInfo.SerialNumberText: string;
begin
  Result := '';
  if ((IsInfoAvailable = True) and (FSerialNumber <> '')) then Result := SerialNumberToString(FSerialNumber)
end;

procedure THDDInfo.SetDriveNumber(const Value: Byte);
begin
  FDriveNumber := Value;
  ReadInfo;
end;

end.