{
  TECHNISOFT Group presents:

  VERSION INFORMATION V1.3b (c) 1998 by Alexander Burlakov aka Hunter
                               E-mail: Hunter@hptmts.tvcom.ru
                               URL: http://www.chat.ru/~hunterml/

  This is freeware beta version. If you will use those components or have
  any comments, please, contact with me (E-mail: Hunter@hptmts.tvcom.ru).

  This unit contains two Delphi components:
        1. TVersionView - display program version information such as:
          - Product name;
          - Product Version;
          - Company Name and more (see below).
        2. TVersionProtect - for protecting your version inf. from changing.
            Using CRC32 control to detect all changes in FileVersionInfo
            section.

  Before using those components you must fill Version inf. on
  <Project/Options.../VersionInfo> panel at design time.

  Contents some code optimization for DELPHI 4.
}
{-$DEFINE DELPHI_4}
{NOTE: Remove "-" from previous line if you are using DELPHI 4}

unit VerView;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

const
// Version keys description
  vsCompanyName = 'CompanyName';
  vsFileDescription = 'FileDescription';
  vsInternalName = 'InternalName';
  vsLegalCopyright = 'LegalCopyright';
  vsLegalTrademarks = 'LegalTrademarks';
  vsOriginalFilename = 'OriginalFilename';
  vsProductName = 'ProductName';
  vsComments = 'Comments';

type
// Fixed File Information in Version section
   TVS_FIXEDFILEINFO = record
        dwSignature : longint;
        dwStrucVersion : longint;
        dwFileVersionMS : longint;
        dwFileVersionLS : longint;
        dwFileFlagsMask : longint;
        dwFileFlags : longint;
        dwFileOS : longint;
        dwFileType : longint;
        dwFileSubtype : longint;
        dwFileDateMS : longint;
        dwFileDateLS : longint;
   end;

  TInfoCategory = (icVersion, icShortVersion, icCompanyName,
                   icFileDescription,
                   icInternalName, icLegalCopyright,
                   icLegalTrademarks, icOriginalFilename,
                   icProductName, icComments);

// Version string viewer class definition
  TVersionView = class(TLabel)
  private
    { Private declarations }
    FVersionText : string;
    FInfoCategory: TInfoCategory;
    procedure GetPrgVer;                      // Get version number from FixedInf.
    procedure GetPrgInfo(ACategory : string); //Get all version strings
  protected
    { Protected declarations }
    function GetLabelText: string; override;
  public
    { Public declarations }
  published
    { Published declarations }
    property InfoCategory :TInfoCategory read FInfoCategory write FInfoCategory;
  end;

// Version protect class definition
  TVersionProtect = class(TComponent)
  private
    { Private declarations }
    FCheckSumm : Longint;
    FNotifyUser : boolean;
    FSaveEvent : TNotifyEvent;
  protected
    { Protected declarations }
    procedure VerifyAuthentication(Sender: TObject);
    procedure CloseProgram;
  public
    { Public declarations }
    constructor Create(AOwner : TComponent); override;
    destructor Destroy; override;
  published
    { Published declarations }
    property CheckSumm : longint read FCheckSumm write FCheckSumm;
    property NotifyUser : boolean read FNotifyUser write FNotifyUser;
// If NotifyUser property is set in True then TVersionProtect will display
// MsgBox with Error message overwise terminate without notification.
  end;

procedure Register;

implementation
var
  VerInfoPresent : boolean;
  Buf : pointer;
  Sz : word;

function SwapLong(L : longint): longint;
assembler;
asm
      rol    eax, 16;
end;

function CRC32Calc( CRC :Longint; const Data; DataLen :Longint ) :Longint;
assembler;
asm
      or     edx, edx
      je     @@exi
      jecxz  @@exi
      push   ebx
@@upd:
      movzx  ebx, al
      xor    bl, [ edx ]
      shr    eax, 8
      and    eax, 00FFFFFFh
      xor    eax, cs:[ ebx + OFFSET @@C32TT ]
      inc    edx
      loop   @@upd
      pop    ebx
@@exi:
      ret

@@C32TT:

DD 000000000h, 077073096h, 0ee0e612ch, 0990951bah
DD 0076dc419h, 0706af48fh, 0e963a535h, 09e6495a3h
DD 00edb8832h, 079dcb8a4h, 0e0d5e91eh, 097d2d988h
DD 009b64c2bh, 07eb17cbdh, 0e7b82d07h, 090bf1d91h
DD 01db71064h, 06ab020f2h, 0f3b97148h, 084be41deh
DD 01adad47dh, 06ddde4ebh, 0f4d4b551h, 083d385c7h
DD 0136c9856h, 0646ba8c0h, 0fd62f97ah, 08a65c9ech
DD 014015c4fh, 063066cd9h, 0fa0f3d63h, 08d080df5h
DD 03b6e20c8h, 04c69105eh, 0d56041e4h, 0a2677172h
DD 03c03e4d1h, 04b04d447h, 0d20d85fdh, 0a50ab56bh
DD 035b5a8fah, 042b2986ch, 0dbbbc9d6h, 0acbcf940h
DD 032d86ce3h, 045df5c75h, 0dcd60dcfh, 0abd13d59h
DD 026d930ach, 051de003ah, 0c8d75180h, 0bfd06116h
DD 021b4f4b5h, 056b3c423h, 0cfba9599h, 0b8bda50fh
DD 02802b89eh, 05f058808h, 0c60cd9b2h, 0b10be924h
DD 02f6f7c87h, 058684c11h, 0c1611dabh, 0b6662d3dh
DD 076dc4190h, 001db7106h, 098d220bch, 0efd5102ah
DD 071b18589h, 006b6b51fh, 09fbfe4a5h, 0e8b8d433h
DD 07807c9a2h, 00f00f934h, 09609a88eh, 0e10e9818h
DD 07f6a0dbbh, 0086d3d2dh, 091646c97h, 0e6635c01h
DD 06b6b51f4h, 01c6c6162h, 0856530d8h, 0f262004eh
DD 06c0695edh, 01b01a57bh, 08208f4c1h, 0f50fc457h
DD 065b0d9c6h, 012b7e950h, 08bbeb8eah, 0fcb9887ch
DD 062dd1ddfh, 015da2d49h, 08cd37cf3h, 0fbd44c65h
DD 04db26158h, 03ab551ceh, 0a3bc0074h, 0d4bb30e2h
DD 04adfa541h, 03dd895d7h, 0a4d1c46dh, 0d3d6f4fbh
DD 04369e96ah, 0346ed9fch, 0ad678846h, 0da60b8d0h
DD 044042d73h, 033031de5h, 0aa0a4c5fh, 0dd0d7cc9h
DD 05005713ch, 0270241aah, 0be0b1010h, 0c90c2086h
DD 05768b525h, 0206f85b3h, 0b966d409h, 0ce61e49fh
DD 05edef90eh, 029d9c998h, 0b0d09822h, 0c7d7a8b4h
DD 059b33d17h, 02eb40d81h, 0b7bd5c3bh, 0c0ba6cadh
DD 0edb88320h, 09abfb3b6h, 003b6e20ch, 074b1d29ah
DD 0ead54739h, 09dd277afh, 004db2615h, 073dc1683h
DD 0e3630b12h, 094643b84h, 00d6d6a3eh, 07a6a5aa8h
DD 0e40ecf0bh, 09309ff9dh, 00a00ae27h, 07d079eb1h
DD 0f00f9344h, 08708a3d2h, 01e01f268h, 06906c2feh
DD 0f762575dh, 0806567cbh, 0196c3671h, 06e6b06e7h
DD 0fed41b76h, 089d32be0h, 010da7a5ah, 067dd4acch
DD 0f9b9df6fh, 08ebeeff9h, 017b7be43h, 060b08ed5h
DD 0d6d6a3e8h, 0a1d1937eh, 038d8c2c4h, 04fdff252h
DD 0d1bb67f1h, 0a6bc5767h, 03fb506ddh, 048b2364bh
DD 0d80d2bdah, 0af0a1b4ch, 036034af6h, 041047a60h
DD 0df60efc3h, 0a867df55h, 0316e8eefh, 04669be79h
DD 0cb61b38ch, 0bc66831ah, 0256fd2a0h, 05268e236h
DD 0cc0c7795h, 0bb0b4703h, 0220216b9h, 05505262fh
DD 0c5ba3bbeh, 0b2bd0b28h, 02bb45a92h, 05cb36a04h
DD 0c2d7ffa7h, 0b5d0cf31h, 02cd99e8bh, 05bdeae1dh
DD 09b64c2b0h, 0ec63f226h, 0756aa39ch, 0026d930ah
DD 09c0906a9h, 0eb0e363fh, 072076785h, 005005713h
DD 095bf4a82h, 0e2b87a14h, 07bb12baeh, 00cb61b38h
DD 092d28e9bh, 0e5d5be0dh, 07cdcefb7h, 00bdbdf21h
DD 086d3d2d4h, 0f1d4e242h, 068ddb3f8h, 01fda836eh
DD 081be16cdh, 0f6b9265bh, 06fb077e1h, 018b74777h
DD 088085ae6h, 0ff0f6a70h, 066063bcah, 011010b5ch
DD 08f659effh, 0f862ae69h, 0616bffd3h, 0166ccf45h
DD 0a00ae278h, 0d70dd2eeh, 04e048354h, 03903b3c2h
DD 0a7672661h, 0d06016f7h, 04969474dh, 03e6e77dbh
DD 0aed16a4ah, 0d9d65adch, 040df0b66h, 037d83bf0h
DD 0a9bcae53h, 0debb9ec5h, 047b2cf7fh, 030b5ffe9h
DD 0bdbdf21ch, 0cabac28ah, 053b39330h, 024b4a3a6h
DD 0bad03605h, 0cdd70693h, 054de5729h, 023d967bfh
DD 0b3667a2eh, 0c4614ab8h, 05d681b02h, 02a6f2b94h
DD 0b40bbe37h, 0c30c8ea1h, 05a05df1bh, 02d02ef8dh

end;


function TVersionView.GetLabelText: string;
begin
  if not (csDesigning in ComponentState) then
  begin
    case FInfoCategory of
      icVersion, icShortVersion : GetPrgVer;
      icCompanyName : GetPrgInfo(vsCompanyName);
      icFileDescription : GetPrgInfo(vsFileDescription);
      icInternalName : GetPrgInfo(vsInternalName);
      icLegalCopyright : GetPrgInfo(vsLegalCopyright);
      icLegalTrademarks : GetPrgInfo(vsLegalTrademarks);
      icOriginalFilename : GetPrgInfo(vsOriginalFilename);
      icProductName : GetPrgInfo(vsProductName);
      icComments : GetPrgInfo(vsComments);
    end; { CASE }
    GetLabelText := FVersionText;
  end  else GetLabelText := Caption;
end;

procedure TVersionView.GetPrgVer;
type PVerInfo = ^TVS_FIXEDFILEINFO;
var
  zKeyPath : array[0..255] of Char;
{$IFDEF DELPHI_4}
  Len : cardinal;
{$ELSE}
  Len : integer;
{$ENDIF}
  VerInfo : PVerInfo;
begin
  FVersionText := 'Unknown';
  if not VerInfoPresent then Exit;
  if VerQueryValue(Buf, StrPCopy(zKeyPath, '\'), pointer(VerInfo), Len) then
  begin
    if FInfoCategory = icVersion then
       FVersionText := 'Version '+
                      IntToStr(HIWORD(VerInfo.dwFileVersionMS))+'.'+
                      IntToStr(LOWORD(VerInfo.dwFileVersionMS))+'.'+
                      IntToStr(HIWORD(VerInfo.dwFileVersionLS))+'.'+
                      IntToStr(LOWORD(VerInfo.dwFileVersionLS))
       else FVersionText := 'Version '+
                      IntToStr(HIWORD(VerInfo.dwFileVersionMS))+'.'+
                      IntToStr(LOWORD(VerInfo.dwFileVersionMS));
  end;
end;

procedure TVersionView.GetPrgInfo;
var
  zKeyPath : array[0..255] of char;
  P : pointer;
{$IFDEF DELPHI_4}
  Len : cardinal;
{$ELSE}
  Len : integer;
{$ENDIF}
  Language : string;
begin
  FVersionText := 'Unknown';
  if not VerInfoPresent then Exit;
  if VerQueryValue(Buf, StrPCopy(zKeyPath,
     '\\VarFileInfo\\Translation'), P, Len) then
         Language := format('%.8x', [SwapLong(Longint(P^))]);
  if VerQueryValue(Buf, StrPCopy(zKeyPath,
     '\\StringFileInfo\\'+Language+'\\'+ACategory), P, Len) then
         FVersionText := StrPas(PChar(P));
end;

constructor TVersionProtect.Create(AOwner : TComponent);
begin
  inherited Create(AOwner);
  FNotifyUser := true;
  if not (csDesigning in ComponentState) and (Owner is TForm) then
  begin
    FSaveEvent := TForm(Owner).OnActivate;
    TForm(Owner).OnActivate := VerifyAuthentication;
  end;
  if not (Owner is TForm) then
    MessageDlg('TVersionProtect must be placed on TForm object only.',
                mtInformation,   [mbOk], 0);
end;

destructor TVersionProtect.Destroy;
begin
  if not (csDesigning in ComponentState) and (Owner is TForm) then
     if Assigned(FSaveEvent) then TForm(Owner).OnActivate := FSaveEvent;
  inherited Destroy;
end;

procedure TVersionProtect.CloseProgram;
begin
  if FNotifyUser then MessageDlg('Authentication verifing error.'#13+
             'Contact with your software distributor.', mtError,
             [mbOk], 0);
  Application.Terminate;
end;

procedure TVersionProtect.VerifyAuthentication;
label StopExecution;
var L : longint;
begin
  if (csDesigning in ComponentState) then Exit;
  if FCheckSumm = 0 then
  begin
    if not VerInfoPresent then
    begin
      MessageDlg('TVersionProtect has detected that you don'+
                 #146't include the version information in '+
                 'your project. TVersionProtect is not needed.',
                  mtInformation, [mbOk], 0);
      if Assigned(FSaveEvent) then FSaveEvent(Sender);
      Free;
      Exit;
    end;
    CheckSumm := CRC32Calc($FFFFFFFF, Buf^, Sz);
    MessageDlg(format('TVersionProtect is added into project but '+
               'CheckSumm property does not set.'#13+
               'Version information checksumm is :'#09+
               '$%.8x.'#13'Please, add this value into '+
               'CheckSumm property to protect your program.',
                [FCheckSumm]), mtInformation, [mbOk], 0);
  end else
  begin
    if not VerInfoPresent then CloseProgram;
    L := CRC32Calc($FFFFFFFF, Buf^, Sz);
    if L <> FCheckSumm then CloseProgram; { general checking }
  end;
StopExecution:
  if Assigned(FSaveEvent) then FSaveEvent(Sender);
end;

procedure Register;
begin
  RegisterComponents('Technisoft', [TVersionView]);
  RegisterComponents('Technisoft', [TVersionProtect]);
end;

var
  zSelfPath : array[0..255] of char;
  L : longint;
initialization
begin
  VerInfoPresent := false;
  Sz := GetFileVersionInfoSize(StrPCopy(zSelfPath, ParamStr(0)), L);
  GetMem(Buf, Sz);
  if (Sz > 0) and GetFileVersionInfo(StrPCopy(zSelfPath, ParamStr(0)), 0, Sz, Buf) then
      VerInfoPresent := true;
end;

finalization
begin
  FreeMem(Buf, Sz);
end;
end.