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;
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
coid: TOID;
j, jmax: integer;
sTmp: string;
begin
sTmp := '';
InitOidDef(@coid);
_ReadOidFile(subfile, @coid);
jmax := ListCount(coid.ASNIds)-1;
for j := 0 to jmax do
begin
if j = 0 then sTmp := sTmp + ' (';
sTmp := sTmp + ListGetElement(coid.ASNIds, j);
if j = jmax then
sTmp := sTmp + ')'
else
sTmp := sTmp + ', ';
end;
FreeOidDef(@coid);
_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;
begin
AsnEditor := false;
repeat
InitList(asnList);
for i := 0 to ListCount(oid^.ASNIds)-1 do
begin
ListAppend(asnList, ListGetElement(oid^.ASNIDs, i));
end;
ListAppend(asnList, '<NEW>');
ListAppend(asnList, '<SAVE>');
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);
(* 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 = ListCount(oid^.ASNIDs) 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 = ListCount(oid^.ASNIDs)+1 then
begin
(* "SAVE" item was selected *)
AsnEditor := true;
Exit;
end
else if res = ListCount(oid^.ASNIDs)+2 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 *)
ListDeleteElement(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 *)
InitList(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);
Delete(sTmp, 1, 8);
if 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: TOID;
begin
NewOidEditor := false;
InitOidDef(@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: TOID;
filenameChild: string;
begin
for i := 0 to ListCount(oid^.SubIds)-1 do
begin
filenameChild := Copy(ListGetElement(oid^.SubIds, i), 1, 8) + '.OID';
InitOidDef(@childOID);
_ReadOidFile(filenameChild, @childOID);
DeleteChildrenRecursive(@childOID);
FreeOidDef(@childOID);
DeleteFile(filenameChild);
end;
ListClear(oid^.SubIds);
end;
procedure DeleteOidRecursive(selfOID: POID);
var
i: integer;
parentOID: TOID;
filenameSelf, filenameParent: string;
fileIdToDelete: string;
begin
(* Remove all children and their files recursively *)
DeleteChildrenRecursive(selfOID);
(* Remove forward reference in parent OID *)
filenameParent := Copy(selfOID^.Parent, 1, 8)+'.OID';
InitOidDef(@parentOID);
_ReadOidFile(filenameParent, @parentOID);
for i := 0 to ListCount(parentOID.SubIds)-1 do
begin
if Copy(ListGetElement(parentOID.SubIds, i), 1, 8) = selfOID^.FileId then
begin
ListDeleteElement(parentOID.SubIds, i);
_WriteOidFile(filenameParent, @parentOID);
break;
end;
end;
FreeOidDef(@parentOID);
(* Delete own file *)
fileIdToDelete := selfOID^.FileId;
filenameSelf := fileIdToDelete+'.OID';
DeleteFile(filenameSelf);
end;
procedure DisplayOIDFile(filename: string);
const
ID_EXIT = '?EXIT';
ID_ASNEDIT = '?ASN1';
ID_DESCEDIT = '?DESC';
ID_ADDCHILD = '?ADDC';
ID_DELETE = '?DELE';
NAVBAR_SIZE = 5;
var
isRoot: boolean;
f: Text;
line, cmd: string;
oid: TOID;
i, menuX, menuY: integer;
linesLeft, linesRequired: integer;
sTmp, subfile: string;
sAsn: string;
subsel, subfiles: PStringList;
subselres: integer;
sTmp1: string;
begin
repeat
InitOidDef(@oid);
_ReadOidFile(filename, @oid);
(* Print OID information *)
ClrScr;
if oid.DotNotation = '' then
DrawTitleBar('OID ROOT')
else
DrawTitleBar('OID ' + oid.DotNotation);
GotoXY(ScreenWidth-Length(filename)+1,1);
TextBackground(White);
TextColor(Black);
WriteLn(filename);
TextBackground(Black);
TextColor(White);
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 - NAVBAR_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 *)
InitList(subsel);
InitList(subfiles);
sTmp := oid.Parent;
if sTmp = '' then
begin
isRoot := true;
end
else
begin
Delete(sTmp, 1, 8);
isRoot := sTmp = oid.DotNotation;
end;
if (oid.Parent <> '') and not isRoot then
begin
sTmp := oid.Parent;
subfile := Copy(sTmp, 1, 8)+'.OID';
Delete(sTmp, 1, 8);
sTmp := sTmp + _ShowASNIds(subfile);
ListAppend(subsel, 'Go to parent ' + sTmp);
ListAppend(subfiles, subfile);
end;
if isRoot then
begin
ListAppend(subsel, 'Back to main menu');
ListAppend(subfiles, ID_EXIT);
end;
for i := 0 to ListCount(oid.SubIds)-1 do
begin
sTmp := ListGetElement(oid.SubIds, i);
subfile := Copy(sTmp, 1, 8)+'.OID';
Delete(sTmp, 1, 8);
sTmp := sTmp + _ShowASNIds(subfile);
ListAppend(subsel, 'Go to child ' + sTmp);
ListAppend(subfiles, subfile);
end;
if oid.DotNotation <> '' then
begin
ListAppend(subsel, 'Edit ASN.1 identifiers');
ListAppend(subfiles, ID_ASNEDIT);
end;
ListAppend(subsel, 'Edit description');
ListAppend(subfiles, ID_DESCEDIT);
ListAppend(subsel, 'Add child');
ListAppend(subfiles, ID_ADDCHILD);
if not isRoot then
begin
ListAppend(subsel, 'Delete OID');
ListAppend(subfiles, ID_DELETE);
end;
(* Show menu *)
subselres := DrawSelectionList(menuX, menuY,
ScreenWidth-2,
NAVBAR_SIZE,
subsel,
true,
'SELECT ACTION',
1);
(* Process user selection *)
if subselres = -1 then
begin
exit;
end
else
begin
sTmp1 := ListGetElement(subfiles, subselres);
if sTmp1 = ID_ASNEDIT then
begin
if AsnEditor(@oid) then
_WriteOidFile(filename, @oid);
end
else if sTmp1 = ID_DESCEDIT then
begin
if DescEditor(@oid) then
_WriteOidFile(filename, @oid);
end
else if sTmp1 = ID_ADDCHILD then
begin
if NewOidEditor(@oid) then
begin
_WriteOidFile(filename, @oid);
end;
end
else if sTmp1 = ID_DELETE then
begin
ShowMessage('Are you sure you want to delete this OID?', 'DELETE OID', true);
DrawStatusBar('Y = Yes; any other key = No');
if UpCase(ReadKey) = 'Y' then
begin
filename := Copy(oid.Parent,1,8)+'.OID';
DeleteOidRecursive(@oid);
end;
end
else if sTmp1 = ID_EXIT then
begin
exit;
end
else
begin
filename := sTmp1;
end;
end;
FreeList(subsel);
FreeList(subfiles);
FreeOidDef(@oid);
until false;
end;
procedure CreateInitOIDFile(filename: string);
var
oid: TOID;
begin
InitOidDef(@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 := '00000000';
oid.DotNotation := '';
oid.Parent := '00000000';
_WriteOidFile(filename, @oid);
FreeOidDef(@oid);
end;
procedure OP_ManageOIDs;
begin
ClrScr;
DrawTitleBar('Manage Object Identifiers');
DrawStatusBar('');
if not FileExists('00000000.OID') then
begin
CreateInitOIDFile('00000000.OID');
end;
DisplayOIDFile('00000000.OID');
end;
procedure OP_ManageRAs;
begin
ClrScr;
DrawTitleBar('Manage Registration Authorities');
DrawStatusBar('');
(* TODO: Implement "Manage RAs" feature *)
ShowMessage('This feature has not yet been implemented!', 'NOTICE', true);
_Pause;
end;
procedure OP_ReturnToMSDOS;
begin
ClrScr;
end;
procedure OP_MainMenu;
const
MenuWidth = 15;
MenuHeight = 3;
var
menu: PStringList;
menuRes, menuLeft, menuTop: integer;
begin
repeat
ClrScr;
DrawTitleBar('Welcome to OIDplus for DOS');
DrawStatusBar(DEFAULT_STATUSBAR);
GoToXY(ScreenWidth-Length(VERSIONINFO), ScreenHeight-1);
Write(VERSIONINFO);
InitList(menu);
ListAppend(menu, 'Manage OIDs');
ListAppend(menu, 'Manage RAs');
ListAppend(menu, 'Return to DOS');
menuLeft := round(ScreenWidth/2 -MenuWidth/2);
menuTop := round(ScreenHeight/2-MenuHeight/2);
menuRes := DrawSelectionList(menuLeft, menuTop, MenuWidth, MenuHeight, menu, true, 'MAIN MENU', 2);
FreeList(menu);
if menuRes = 0 then
begin
OP_ManageOIDs;
end;
if menuRes = 1 then
begin
OP_ManageRAs;
end;
until (menuRes = 2) or (menuRes = -1);
OP_ReturnToMSDOS;
end;
begin
OP_MainMenu;
end.