Subversion Repositories oidplus

program OIDPLUS;

(************************************************)

(* OIDPLUS.PAS                                  *)

(* Author:   Daniel Marschall                   *)

(* Revision: 2022-02-14                         *)

(* License:  Apache 2.0                         *)

(* This file contains:                          *)

(* - "OIDplus for DOS" program                  *)

(************************************************)

uses

  Dos, Crt, StrList, VtsFuncs, VtsCui, OidFile, OidUtils;

const

  VERSIONINFO            = 'Revision: 2022-02-14';

  DEFAULT_STATUSBAR      = '(C)2020-2022 ViaThinkSoft. Licensed under the terms of the Apache 2.0 license.';

  DISKIO_SOUND_DEBUGGING = false;

  DISKIO_SOUND_DELAY     = 500;

  ASNEDIT_LINES          = 10;

  DESCEDIT_LINES         = 10;

  DESCEDIT_PADDING       = 3;

  ACTIONMENU_SIZE        = 5;

  MAINMENU_WIDTH         = 15;

  MAINMENU_HEIGHT        = 3;

  MAINMENU_ALLOW_ESC     = false;

procedure _WriteOidFile(filename: string; oid: POid);

begin

  DrawStatusBar('Write file ' + filename + '...');

  WriteOidFile(filename, oid);

  if DISKIO_SOUND_DEBUGGING then

  begin

    Sound(70);

    Delay(DISKIO_SOUND_DELAY - 10);

    NoSound;

    Delay(10);

  end;

  DrawStatusBar(DEFAULT_STATUSBAR);

end;

procedure _ReadOidFile(filename: string; oid: POid);

begin

  DrawStatusBar('Read file ' + filename + '...');

  ReadOidFile(filename, oid);

  if DISKIO_SOUND_DEBUGGING then

  begin

    Sound(50);

    Delay(DISKIO_SOUND_DELAY - 10);

    NoSound;

    Delay(10);

  end;

  DrawStatusBar(DEFAULT_STATUSBAR);

end;

procedure _Pause;

var

  bakX, bakY: integer;

begin

  bakX := WhereX;

  bakY := WhereY;

  DrawStatusBar('Press any key to continue');

  GoToXY(bakX, bakY);

  ReadKey;

  DrawStatusBar(DEFAULT_STATUSBAR);

end;

function _ShowASNIds(subfile: string): string;

var

  childOID: POID;

  j, jmax: integer;

  sTmp: string;

begin

  sTmp := '';

  CreateOidDef(childOID);

  _ReadOidFile(subfile, childOID);

  jmax := ListCount(childOID^.ASNIds)-1;

  for j := 0 to jmax do

  begin

    if j = 0 then sTmp := sTmp + ' (';

    sTmp := sTmp + ListGetElement(childOID^.ASNIds, j);

    if j = jmax then

      sTmp := sTmp + ')'

    else

      sTmp := sTmp + ', ';

  end;

  FreeOidDef(childOID);

  _ShowASNIds := sTmp;

end;

function AsnAlreadyExisting(oid: POID; asnid: string): boolean;

var

  sTmp: string;

  i: integer;

begin

  for i := 0 to ListCount(oid^.AsnIds)-1 do

  begin

    sTmp := ListGetElement(oid^.AsnIds, i);

    if sTmp = asnid then

    begin

      AsnAlreadyExisting := true;

      exit;

    end;

  end;

  AsnAlreadyExisting := false;

end;

function AsnEditor(oid: POID): boolean;

var

  asnList: PStringList;

  i: integer;

  x, y, w, h: integer;

  res: integer;

  sInput: string;

  menuIdNew, menuIdSave, menuIdExit: integer;

begin

  AsnEditor := false;

  repeat

    CreateList(asnList);

    for i := 0 to ListCount(oid^.ASNIds)-1 do

    begin

      ListAppend(asnList, ListGetElement(oid^.ASNIDs, i));

    end;

    menuIdNew  := ListAppend(asnList, '<NEW>');

    menuIdSave := ListAppend(asnList, '<SAVE>');

    menuIdExit := ListAppend(asnList, '<CANCEL>');

    DrawStatusBar(DEFAULT_STATUSBAR);

    x := SINGLE_LINE_BOX_PADDING;

    y := ScreenHeight div 2 - ASNEDIT_LINES div 2;

    w := ScreenWidth - (SINGLE_LINE_BOX_PADDING-1)*2;

    h := ASNEDIT_LINES;

    res := DrawSelectionList(x, y, w, h,

                             asnList, true,

                             'EDIT ASN.1 IDENTIFIERS',

                             2);

    FreeList(asnList);

    (* Change double-border to thin-border *)

    DrawThinBorder(x-1, y-1, w+2, h+2);

    GoToXY(x+1, y-1);

    Write('EDIT ASN.1 IDENTIFIERS');

    if res = -1 then

    begin

      exit;

    end

    else if res = menuIdNew then

    begin

      (* "NEW" item was selected *)

      sInput := '';

      repeat

        if QueryVal(sInput,

                    SINGLE_LINE_BOX_PADDING_INNER,

                    ScreenHeight div 2,

                    ScreenWidth - (SINGLE_LINE_BOX_PADDING_INNER-1)*2,

                    1,

                    'ADD SINGLE ASN.1 ID',

                    2) then

        begin

          if sInput = '' then continue;

          if not ASN1IDValid(sInput) then

          begin

            ShowMessage('Invalid ASN1.ID! (Require -, a..z, A..Z, 0..9, begin with a-z)', 'ERROR', true);

            _Pause;

          end

          else if AsnAlreadyExisting(oid, sInput) then

          begin

            ShowMessage('ASN.1 identifier is already existing on this arc', 'ERROR', true);

            _Pause;

          end

          else

          begin

            ListAppend(oid^.ASNIDs, sInput);

            break;

          end;

        end

        else break;

      until false;

    end

    else if res = menuIdSave then

    begin

      (* "SAVE" item was selected *)

      AsnEditor := true;

      Exit;

    end

    else if res = menuIdExit then

    begin

      (* "CANCEL" item was selected *)

      AsnEditor := false;

      Exit;

    end

    else

    begin

      DrawStatusBar('Note: Remove the text to delete the ASN.1 identifier');

      sInput := ListGetElement(oid^.ASNIDs, res);

      repeat

        if QueryVal(sInput,

                    SINGLE_LINE_BOX_PADDING_INNER,

                    ScreenHeight div 2,

                    ScreenWidth - (SINGLE_LINE_BOX_PADDING_INNER-1)*2,

                    1,

                    'EDIT SINGLE ASN.1 ID',

                    2) then

        begin

          if sInput = '' then

          begin

            (* Empty input = Delete ASN.1 ID *)

            ListDeleteElementByIndex(oid^.ASNIDs, res);

            break;

          end

          else if not ASN1IDValid(sInput) then

          begin

            ShowMessage('Invalid ASN1.ID! (Require -, a..z, A..Z, 0..9, begin with a-z)', 'ERROR', true);

            _Pause;

          end

          else if AsnAlreadyExisting(oid, sInput) and

              not (ListGetElement(oid^.ASNIDs, res) = sInput) then

          begin

            ShowMessage('ASN.1 identifier is already existing on this arc', 'ERROR', true);

            _Pause;

          end

          else

          begin

            ListSetElement(oid^.ASNIDs, res, sInput);

            break;

          end;

        end

        else break;

      until false;

    end;

  until false;

end;

function DescEditor(oid: POID): boolean;

var

  sInput: string;

begin

  DescEditor := false;

  DrawStatusBar('Note: Press Ctrl+Return for a line-break.');

  sInput := oid^.description;

  if QueryVal(sInput,

              DESCEDIT_PADDING,

              ScreenHeight div 2 - DESCEDIT_LINES div 2,

              ScreenWidth - (DESCEDIT_PADDING-1)*2,

              DESCEDIT_LINES,

              'EDIT DESCRIPTION',

              2) then

  begin

    oid^.description := sInput;

    DescEditor := true; (* request caller to save @oid *)

  end;

end;

function NextPossibleFileID: string;

var

  DirInfo: SearchRec;

  list: PStringList;

  iId: LongInt;

  sId: string;

begin

  (* Put all found files into a list *)

  CreateList(list);

  FindFirst('????????.OID', Archive, DirInfo);

  while DosError = 0 do

  begin

    sId := Copy(DirInfo.Name, 1, 8);

    ListAppend(list, sId);

    FindNext(DirInfo);

  end;

  (* Search for the first non existing item in the list *)

  sId := '';

  for iId := 0 to 99999999 do

  begin

    sId := ZeroPad(iId, 8);

    if not ListContains(list, sId) then break;

  end;

  NextPossibleFileId := sId;

  FreeList(list);

end;

function NumIdAlreadyExisting(parentOID: POID; sInput: string): boolean;

var

  searchDotNotation: string;

  sTmp: string;

  i: integer;

begin

  if parentOID^.DotNotation = '' then

    searchDotNotation := sInput

  else

    searchDotNotation := parentOID^.DotNotation + '.' + sInput;

  for i := 0 to ListCount(parentOID^.SubIds)-1 do

  begin

    sTmp := ListGetElement(parentOID^.SubIds, i);

    if DotNotationPart(sTmp) = searchDotNotation then

    begin

      NumIdAlreadyExisting := true;

      exit;

    end;

  end;

  NumIdAlreadyExisting := false;

end;

function NumIdEditor(oid: POID; parentOID: POID): boolean;

var

  sInput: string;

begin

  NumIdEditor := false;

  sInput := '';

  repeat

    if QueryVal(sInput,

                SINGLE_LINE_BOX_PADDING_INNER,

                ScreenHeight div 2,

                ScreenWidth - (SINGLE_LINE_BOX_PADDING_INNER-1)*2,

                1,

                'ENTER NUMERIC ID',

                2) then

    begin

      if sInput = '' then continue;

      if not IsNumeric(sInput) then

      begin

        ShowMessage('Invalid numeric ID (must be a positive integer)', 'ERROR', true);

        _Pause;

      end

      else if (parentOID^.DotNotation='') and (StrToInt(sInput) > 2) then

      begin

        ShowMessage('Invalid numeric ID (root arc can only be 0, 1, or 2)', 'ERROR', true);

        _Pause;

      end

      else if ((parentOID^.DotNotation='0') or (parentOID^.DotNotation='1')) and (StrToInt(sInput) > 39) then

      begin

        ShowMessage('Invalid numeric ID (root 0 and 1 must have sub-arc of 0..39)', 'ERROR', true);

        _Pause;

      end

      else if NumIdAlreadyExisting(parentOID, sInput) then

      begin

        ShowMessage('This numeric ID is already used in this arc', 'ERROR', true);

        _Pause;

      end

      else

      begin

        if parentOID^.DotNotation = '' then

          oid^.DotNotation := sInput

        else

          oid^.DotNotation := parentOID^.DotNotation + '.' + sInput;

        NumIdEditor := true; (* request caller to save @oid *)

        Exit;

      end;

    end

    else

    begin

      Exit;

    end;

  until false;

end;

function NewOidEditor(oid: POID): boolean;

var

  newfilename: string;

  newOID: POID;

begin

  NewOidEditor := false;

  CreateOidDef(newOID);

  newOID^.FileId := NextPossibleFileID;

  newOID^.Parent := oid^.FileId + oid^.DotNotation;

  if NumIdEditor(newOID, oid) and

     AsnEditor(newOID) and

     DescEditor(newOID) then

  begin

    newfilename := newOID^.FileId + '.OID';

    _WriteOidFile(newfilename, newOID);

    (* Add link to original file and enable the saving of it *)

    ListAppend(oid^.SubIds, newOID^.FileId + newOID^.DotNotation);

    NewOidEditor := true; (* request caller to save @oid *)

  end;

  FreeOidDef(newOID);

end;

procedure DeleteChildrenRecursive(oid: POID);

var

  i: integer;

  childOID: POID;

  filenameChild: string;

begin

  for i := 0 to ListCount(oid^.SubIds)-1 do

  begin

    filenameChild := FileIdPart(ListGetElement(oid^.SubIds, i)) + '.OID';

    CreateOidDef(childOID);

    _ReadOidFile(filenameChild, childOID);

    DeleteChildrenRecursive(childOID);

    FreeOidDef(childOID);

    DeleteFile(filenameChild);

  end;

  ListClear(oid^.SubIds);

end;

procedure DeleteOidRecursive(selfOID: POID);

var

  i: integer;

  parentOID: POID;

  filenameSelf, filenameParent: string;

begin

  (* Remove all children and their files recursively *)

  DeleteChildrenRecursive(selfOID);

  (* Remove forward reference in parent OID *)

  filenameParent := FileIdPart(selfOID^.Parent) + '.OID';

  CreateOidDef(parentOID);

  _ReadOidFile(filenameParent, parentOID);

  if ListDeleteElementByValue(parentOID^.SubIds, selfOID^.FileId + selfOID^.DotNotation) then

  begin

    _WriteOidFile(filenameParent, parentOID);

  end;

  FreeOidDef(parentOID);

  (* Delete own file *)

  filenameSelf := selfOID^.FileId + '.OID';

  DeleteFile(filenameSelf);

end;

function _DeleteConfirmation: boolean;

var

  sc: Char;

begin

  repeat

    ShowMessage('Are you sure you want to delete this OID? (Y/N)', 'DELETE OID', true);

    DrawStatusBar('Y=Yes, N=No');

    sc := ReadKey;

    if sc = #0 then

    begin

      (* Extended key. Nothing we care about. *)

      ReadKey;

      continue;

    end;

    if UpCase(sc) = 'Y' then

    begin

      _DeleteConfirmation := true;

      break;

    end

    else if UpCase(sc) = 'N' then

    begin

      _DeleteConfirmation := false;

      break;

    end;

  until false;

end;

procedure _DrawOidTitleBar(filename: string; oid: POID);

begin

  if oid^.DotNotation = '' then

    DrawTitleBar('OID ROOT')

  else

    DrawTitleBar('OID ' + oid^.DotNotation);

  (* Put loaded filename into the title bar *)

  GotoXY(ScreenWidth-Length(filename)+1,1);

  TextBackground(White);

  TextColor(Black);

  WriteLn(filename);

  TextBackground(Black);

  TextColor(White);

end;

procedure DisplayOIDFile(filename: string);

var

  isRoot: boolean;

  oid: POID;

  i, menuX, menuY: integer;

  linesLeft, linesRequired: integer;

  sTmp, subfile: string;

  subsel, subfiles: PStringList;

  subselres: integer;

  exitRequest: boolean;

  menuIdExit, menuIdAsnEdit, menuIdDescEdit, menuIdAdd, menuIdDelete: integer;

begin

  exitRequest := false;

  repeat

    CreateOidDef(oid);

    _ReadOidFile(filename, oid);

    (* Print OID information *)

    ClrScr;

    _DrawOidTitleBar(filename, oid);

    DrawStatusBar(DEFAULT_STATUSBAR);

    GotoXY(1,2);

    if oid^.DotNotation <> '' then

    begin

      WriteLn('Dot-Notation:');

      WriteLn(oid^.DotNotation);

      WriteLn('');

    end;

    if Trim(oid^.Description) <> '' then

    begin

      WriteLn('Description:');

      WriteLn(oid^.Description);

      WriteLn('');

    end;

    menuX := WhereX + 1;

    menuY := ScreenHeight - ACTIONMENU_SIZE - 1;

    if ListCount(oid^.ASNIDs) > 0 then

    begin

      linesLeft := menuY - WhereY - 1;

      linesRequired := 1 + ListCount(oid^.ASNIds);

      if LinesLeft < LinesRequired then

      begin

        (* Compact display of ASN.1 identifiers *)

        Write('ASN.1-Identifiers: ');

        for i := 0 to ListCount(oid^.ASNIds)-1 do

        begin

          if i > 0 then Write(', ');

          Write(ListGetElement(oid^.ASNIds, i));

        end;

        WriteLn('');

      end

      else

      begin

        (* Long display of ASN.1 identifiers *)

        WriteLn('ASN.1-Identifiers:');

        for i := 0 to ListCount(oid^.ASNIds)-1 do

        begin

          WriteLn('- '+ListGetElement(oid^.ASNIds, i));

        end;

        WriteLn('');

      end;

    end;

    (* Now prepare the menu entries *)

    CreateList(subsel);   (* Contains the human readable OID name *)

    CreateList(subfiles); (* Contains the file name               *)

    if oid^.Parent = '' then

    begin

      isRoot := true;

    end

    else

    begin

      isRoot := DotNotationPart(oid^.Parent) = oid^.DotNotation;

    end;

    if (oid^.Parent <> '') and not isRoot then

    begin

      sTmp := oid^.Parent;

      subfile := FileIdPart(sTmp) + '.OID';

      ListAppend(subsel, 'Go to parent ' + DotNotationPart(sTmp) + _ShowASNIds(subfile));

      ListAppend(subfiles, subfile);

    end;

    if isRoot then

    begin

      menuIdExit := ListAppend(subsel, 'Back to main menu');

      ListAppend(subfiles, '');

    end

    else menuIdExit := -99;

    for i := 0 to ListCount(oid^.SubIds)-1 do

    begin

      sTmp := ListGetElement(oid^.SubIds, i);

      subfile := FileIdPart(sTmp) + '.OID';

      ListAppend(subsel, 'Go to child  ' + DotNotationPart(sTmp) + _ShowASNIds(subfile));

      ListAppend(subfiles, subfile);

    end;

    if oid^.DotNotation <> '' then

    begin

      menuIdAsnEdit := ListAppend(subsel, 'Edit ASN.1 identifiers');

      ListAppend(subfiles, '');

    end

    else menuIdAsnEdit := -99;

    menuIdDescEdit := ListAppend(subsel, 'Edit description');

    ListAppend(subfiles, '');

    menuIdAdd := ListAppend(subsel, 'Add child');

    ListAppend(subfiles, '');

    if not isRoot then

    begin

      menuIdDelete := ListAppend(subsel, 'Delete OID');

      ListAppend(subfiles, '');

    end

    else menuIdDelete := -99;

    (* Show menu *)

    subselres := DrawSelectionList(menuX, menuY,

                                   ScreenWidth-2,

                                   ACTIONMENU_SIZE,

                                   subsel,

                                   true,

                                   'SELECT ACTION',

                                   1);

    (* Process user selection *)

    if subselres = -1 then

    begin

      exitRequest := true;

    end

    else if subselres = menuIdAsnEdit then

    begin

      if AsnEditor(oid) then

        _WriteOidFile(filename, oid);

    end

    else if subselres = menuIdDescEdit then

    begin

      if DescEditor(oid) then

        _WriteOidFile(filename, oid);

    end

    else if subselres = menuIdAdd then

    begin

      if NewOidEditor(oid) then

        _WriteOidFile(filename, oid);

    end

    else if subselres = menuIdDelete then

    begin

      if _DeleteConfirmation then

      begin

        filename := FileIdPart(oid^.Parent) + '.OID';

        DeleteOidRecursive(oid);

      end;

    end

    else if subselres = menuIdExit then

    begin

      exitRequest := true;

    end

    else

    begin

      (* Normal OID *)

      filename := ListGetElement(subfiles, subselres);

    end;

    FreeList(subsel);

    FreeList(subfiles);

    FreeOidDef(oid);

  until exitRequest;

end;

procedure CreateInitOIDFile(filename: string);

var

  oid: POID;

begin

  CreateOidDef(oid);

  oid^.Description := 'This is the root of the OID tree.' +#13#10 +

                      #13#10 +

                      'Valid subsequent arcs are per definition:' + #13#10 +

                      '- 0 (itu-t)' + #13#10 +

                      '- 1 (iso)' + #13#10 +

                      '- 2 (joint-iso-itu-t)';

  oid^.FileId      := ZeroPad(0, 8);

  oid^.DotNotation := '';

  oid^.Parent      := ZeroPad(0, 8);

  _WriteOidFile(filename, oid);

  FreeOidDef(oid);

end;

procedure OP_ManageOIDs;

var

  initFile: string;

begin

  ClrScr;

  DrawTitleBar('Manage Object Identifiers');

  DrawStatusBar('');

  initFile := ZeroPad(0, 8) + '.OID';

  if not FileExists(initFile) then

  begin

    CreateInitOIDFile(initFile);

  end;

  DisplayOIDFile(initFile);

end;

procedure OP_ManageRAs;

begin

  ClrScr;

  DrawTitleBar('Manage Registration Authorities');

  DrawStatusBar('');

  (* TODO: Implement "Manage RAs" feature *)

end;

procedure OP_ReturnToMSDOS;

begin

  ClrScr;

end;

procedure OP_MainMenu;

var

  menu: PStringList;

  menuRes, menuLeft, menuTop: integer;

  menuIdOID, menuIdRA, menuIdExit: integer;

begin

  repeat

    ClrScr;

    DrawTitleBar('Welcome to OIDplus for DOS');

    DrawStatusBar(DEFAULT_STATUSBAR);

    GoToXY(ScreenWidth-Length(VERSIONINFO), ScreenHeight-1);

    Write(VERSIONINFO);

    CreateList(menu);

    menuIdOID  := ListAppend(menu, 'Manage OIDs');

    menuIdRA   := -99; (*ListAppend(menu, 'Manage RAs');*)

    menuIdExit := ListAppend(menu, 'Return to DOS');

    menuLeft := round(ScreenWidth/2 -MAINMENU_WIDTH/2);

    menuTop  := round(ScreenHeight/2-MAINMENU_HEIGHT/2);

    menuRes  := DrawSelectionList(menuLeft, menuTop,

                                  MAINMENU_WIDTH, MAINMENU_HEIGHT,

                                  menu, true, 'MAIN MENU', 2);

    FreeList(menu);

    if menuRes = menuIdOID then

    begin

      OP_ManageOIDs;

    end

    else if menuRes = menuIdRA then

    begin

      OP_ManageRAs;

    end;

  until (menuRes = menuIdExit) or (MAINMENU_ALLOW_ESC and (menuRes = -1));

  OP_ReturnToMSDOS;

end;

begin

  OP_MainMenu;

end.