mysticbbs/mystic/bbs_msgbase_qwk.pas

835 lines
21 KiB
ObjectPascal

Unit bbs_MsgBase_QWK;
// ====================================================================
// Mystic BBS Software Copyright 1997-2013 By James Coyle
// ====================================================================
//
// This file is part of Mystic BBS.
//
// Mystic BBS is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Mystic BBS is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Mystic BBS. If not, see <http://www.gnu.org/licenses/>.
//
// ====================================================================
{$I M_OPS.PAS}
Interface
Uses
m_FileIO,
BBS_Records,
BBS_DataBase,
BBS_MsgBase_ABS,
BBS_MsgBase_JAM,
BBS_MsgBase_Squish;
Const
QWK_EOL = #13#10;
QWK_CONTROL = 'MYSTICQWK';
Type
BSingle = Array [0..3] of Byte;
QwkNdxHdr = Record
MsgPos : BSingle;
Junk : Byte;
End;
QwkDATHdr = Record {128 bytes}
Status : Char;
MSGNum : Array [1..7] of Char;
Date : Array [1..8] of Char;
Time : Array [1..5] of Char;
UpTO : Array [1..25] of Char;
UpFROM : Array [1..25] of Char;
Subject : Array [1..25] of Char;
PassWord : Array [1..12] of Char;
ReferNum : Array [1..8] of Char;
NumChunk : Array [1..6] of Char;
Active : Char; {225 active, 226 killed}
ConfNum : Word;
Junk : Word;
NetTag : Char;
End;
QwkLRRec = Record
Base : Word;
Pos : LongInt;
End;
TQWKEngine_HasAccess = Function (Sender: Pointer; AcsStr: String) : Boolean;
TQWKEngine_Status = Procedure (Sender: Pointer; State: Byte);
TQWKEngine = Class
StatusUpdate : TQWKEngine_Status;
HasAccess : TQWKEngine_HasAccess;
IsExtended : Boolean;
IsNetworked : Boolean;
WorkPath : String;
PacketID : String;
UserRecord : RecUser;
UserNumber : LongInt;
TotalMessages : LongInt;
TotalBases : LongInt;
RepOK : LongInt;
RepFailed : LongInt;
RepBaseAdd : LongInt;
RepBaseDel : LongInt;
DataFile : TFileBuffer;
MBaseFile : File;
MBase : RecMessageBase;
QwkLR : QwkLRRec;
QwkLRFile : File of QwkLRRec;
MsgBase : PMsgBaseABS;
Constructor Create (QwkPath, QwkID: String; UN: LongInt; UR: RecUser);
Procedure LONG2MSB (Index: LongInt; Var MS: BSingle);
Procedure WriteDOORID;
Procedure WriteTOREADEREXT;
Procedure WriteCONTROLDAT;
Function WriteMSGDAT (IsRep: Boolean) : LongInt;
Procedure UpdateLastReadPointers;
Procedure ResetSentFlagByQLR;
Procedure ExportPacket (IsRep: Boolean);
Function ImportPacket (IsQwk: Boolean) : Boolean;
End;
Implementation
Uses
m_Strings,
m_DateTime;
Constructor TQWKEngine.Create (QwkPath, QwkID: String; UN: LongInt; UR: RecUser);
Begin
Inherited Create;
WorkPath := QwkPath;
PacketID := QwkID;
UserNumber := UN;
UserRecord := UR;
IsExtended := False;
IsNetworked := False;
TotalMessages := 0;
TotalBases := 0;
RepOK := 0;
RepFailed := 0;
RepBaseAdd := 0;
RepBaseDel := 0;
Assign (MBaseFile, bbsCfg.DataPath + 'mbases.dat');
End;
Procedure TQWKEngine.LONG2MSB (Index : LongInt; Var MS : BSingle);
Var
Exp : Byte;
Begin
If Index <> 0 Then Begin
Exp := 0;
While Index And $800000 = 0 Do Begin
Inc (Exp);
Index := Index SHL 1
End;
Index := Index And $7FFFFF;
End Else
Exp := 152;
MS[0] := Index AND $FF;
MS[1] := (Index SHR 8) AND $FF;
MS[2] := (Index SHR 16) AND $FF;
MS[3] := 152 - Exp;
End;
Procedure TQWKEngine.WriteDOORID;
Var
TempFile : Text;
Begin
If IsNetworked Then Exit;
Assign (TempFile, WorkPath + 'door.id');
ReWrite (TempFile);
Write (TempFile, 'DOOR = ' + mysSoftwareID + QWK_EOL);
Write (TempFile, 'VERSION = ' + mysVersion + QWK_EOL);
Write (TempFile, 'SYSTEM = ' + mysSoftwareID + ' ' + mysVersion + QWK_EOL);
Write (TempFile, 'CONTROLNAME = ' + QWK_CONTROL + QWK_EOL);
Write (TempFile, 'CONTROLTYPE = ADD' + QWK_EOL);
Write (TempFile, 'CONTROLTYPE = DROP' + QWK_EOL);
Close (TempFile);
End;
Procedure TQWKEngine.WriteTOREADEREXT;
Var
TempFile : Text;
Flags : String;
Base : RecMessageBase;
Begin
If IsNetworked Or (Not IsExtended) Then Exit;
Assign (TempFile, WorkPath + 'toreader.ext');
ReWrite (TempFile);
Write (TempFile, 'ALIAS ' + UserRecord.Handle + QWK_EOL);
If ioReset (MBaseFile, SizeOf(RecMessageBase), fmRWDN) Then Begin
While Not Eof(MBaseFile) Do Begin
ioRead (MBaseFile, Base);
If HasAccess(Self, Base.ReadACS) Then Begin
Flags := ' ';
If Base.Flags AND MBPrivate = 0 Then
Flags := Flags + 'aO'
Else
Flags := Flags + 'pP';
If Base.Flags AND MBRealNames = 0 Then
Flags := Flags + 'H';
If Not HasAccess(Self, Base.PostACS) Then
Flags := Flags + 'BRZ';
Case Base.NetType of
0 : Flags := Flags + 'L';
1 : Flags := Flags + 'E';
2 : Flags := Flags + 'U';
3 : Flags := Flags + 'N';
End;
If Base.DefQScan = 2 Then
Flags := Flags + 'F';
Write (TempFile, 'AREA ' + strI2S(Base.Index) + Flags, QWK_EOL);
End;
End;
Close (MBaseFile);
End;
Close (TempFile);
End;
Procedure TQWKEngine.WriteCONTROLDAT;
Var
TempFile : Text;
BaseFile : File;
Base : RecMessageBase;
Begin
If IsNetworked Then Exit;
Assign (TempFile, WorkPath + 'control.dat');
ReWrite (TempFile);
Write (TempFile, bbsCfg.BBSName + QWK_EOL);
Write (TempFile, QWK_EOL);
Write (TempFile, QWK_EOL);
Write (TempFile, bbsCfg.SysopName + QWK_EOL);
Write (TempFile, '0,' + PacketID + QWK_EOL);
Write (TempFile, DateDos2Str(CurDateDos, 1), ',', TimeDos2Str(CurDateDos, 0) + QWK_EOL);
Write (TempFile, UserRecord.Handle + QWK_EOL);
Write (TempFile, QWK_EOL);
Write (TempFile, '0' + QWK_EOL);
Write (TempFile, TotalMessages, QWK_EOL);
Write (TempFile, TotalBases - 1, QWK_EOL);
If ioReset (BaseFile, SizeOf(RecMessageBase), fmRWDN) Then Begin
While Not Eof(BaseFile) Do Begin
ioRead (BaseFile, Base);
If HasAccess(Self, Base.ReadACS) Then Begin
If IsNetworked Then
Write (TempFile, Base.QwkConfID, QWK_EOL)
Else
Write (TempFile, Base.Index, QWK_EOL);
If IsExtended Then
Write (TempFile, strStripMCI(Base.Name) + QWK_EOL)
Else
Write (TempFile, Base.QwkName + QWK_EOL);
End;
End;
Close (BaseFile);
End;
Write (TempFile, JustFile(bbsCfg.qwkWelcome) + QWK_EOL);
Write (TempFile, JustFile(bbsCfg.qwkNews) + QWK_EOL);
Write (TempFile, JustFile(bbsCfg.qwkGoodbye) + QWK_EOL);
Close (TempFile);
End;
Function TQWKEngine.WriteMSGDAT (IsRep: Boolean) : LongInt;
Var
NdxFile : File of QwkNdxHdr;
NdxHdr : QwkNdxHdr;
Header : String[128];
BufStr : String[128];
Chunks : Word;
MsgAdded : LongInt;
LastRead : LongInt;
QwkIndex : LongInt;
TooBig : Boolean;
Procedure DoString (Str: String);
Var
Count : SmallInt;
Begin
For Count := 1 to Length(Str) Do Begin
BufStr := BufStr + Str[Count];
If BufStr[0] = #128 Then Begin
DataFile.WriteBlock (BufStr[1], 128);
BufStr := '';
End;
End;
End;
Var
TempStr : String;
SkipMsg : Boolean;
FirstMsg : LongInt = 0;
Begin
MsgAdded := 0;
If Not MBaseOpenCreate(MsgBase, MBase, WorkPath) Then Exit;
If IsRep Then
LastRead := 1
Else
LastRead := MsgBase^.GetLastRead(UserNumber) + 1;
MsgBase^.SeekFirst (LastRead);
While MsgBase^.SeekFound Do Begin
If ((bbsCfg.QwkMaxBase > 0) and (MsgAdded = bbsCfg.QwkMaxBase)) or
((bbsCfg.QwkMaxPacket > 0) and (TotalMessages = bbsCfg.QwkMaxPacket)) Then Break;
MsgBase^.MsgStartUp;
If IsRep And MsgBase^.IsSent Then Begin
MsgBase^.SeekNext;
Continue;
End;
If Not IsNetworked Then
If MsgBase^.IsPriv And Not IsThisUser(UserRecord, MsgBase^.GetTo) Then Begin
MsgBase^.SeekNext;
Continue;
End;
If IsRep Then Begin
If FirstMsg = 0 Then
FirstMsg := MsgBase^.GetMsgNum;
MsgBase^.SetSent(True);
MsgBase^.ReWriteHdr;
End;
LastRead := MsgBase^.GetMsgNum;
Chunks := 0;
BufStr := '';
TooBig := False;
QwkIndex := DataFile.FileSizeRaw DIV 128 + 1;
SkipMsg := False;
MsgBase^.MsgTxtStartUp;
While Not MsgBase^.EOM And Not SkipMsg Do Begin
TempStr := MsgBase^.GetString(79);
If TempStr[1] = #1 Then Begin
// Do not export msgs to a node if the msg came from the node
If IsNetworked And Not IsRep And (Copy(TempStr, 2, 4) = 'QSRC') Then
SkipMsg := strUpper(strWordGet(2, TempStr, ' ')) = strUpper(UserRecord.Handle);
Continue;
End;
Inc (Chunks, Length(TempStr));
End;
If SkipMsg Then Begin
MsgBase^.SeekNext;
Continue;
End;
Inc (MsgAdded);
Inc (TotalMessages);
If Chunks MOD 128 = 0 Then
Chunks := Chunks DIV 128 + 1
Else
Chunks := Chunks DIV 128 + 2;
If IsNetworked Then
Header := ' ' + strPadR(strI2S(MBase.QwkConfID), 7, ' ')
Else
Header := ' ' + strPadR(strI2S(MsgBase^.GetMsgNum), 7, ' ');
Header := Header +
MsgBase^.GetDate +
MsgBase^.GetTime +
strPadR(MsgBase^.GetTo, 25, ' ') +
strPadR(MsgBase^.GetFrom, 25, ' ') +
strPadR(MsgBase^.GetSubj, 25, ' ') +
strPadR('', 12, ' ') +
strPadR(strI2S(MsgBase^.GetRefer), 8, ' ') +
strPadR(strI2S(Chunks), 6, ' ') +
#255 +
' ' +
' ' +
' ';
If IsNetworked Then
Move (Word(MBase.QwkConfID), Header[124], 2)
Else
Move (Word(MBase.Index), Header[124], 2);
If Not IsNetworked Then Begin
If MsgAdded = 1 Then Begin
Assign (NdxFile, WorkPath + strPadL(strI2S(MBase.Index), 3, '0') + '.ndx');
ReWrite (NdxFile);
End;
LONG2MSB (QwkIndex, NdxHdr.MsgPos);
Write (NdxFile, NdxHdr);
End;
DataFile.WriteBlock (Header[1], 128);
If IsExtended Then Begin
If Length(MsgBase^.GetFrom) > 25 Then Begin
DoString('From: ' + MsgBase^.GetFrom + #227);
TooBig := True;
End;
If Length(MsgBase^.GetTo) > 25 Then Begin
DoString('To: ' + MsgBase^.GetTo + #227);
TooBig := True;
End;
If Length(MsgBase^.GetSubj) > 25 Then Begin
DoString('Subject: ' + MsgBase^.GetSubj + #227);
TooBig := True;
End;
If TooBig Then DoString(#227);
End;
MsgBase^.MsgTxtStartUp;
While Not MsgBase^.EOM Do Begin
TempStr := MsgBase^.GetString(79) + #227;
If TempStr[1] = #1 Then Continue;
DoString (TempStr);
End;
If BufStr <> '' Then Begin
BufStr := strPadR (BufStr, 128, ' ');
DataFile.WriteBlock (BufStr[1], 128);
End;
MsgBase^.SeekNext;
End;
If Not IsNetworked And (MsgAdded > 0) Then
Close (NdxFile);
MsgBase^.CloseMsgBase;
Dispose (MsgBase, Done);
If IsRep Then
Result := FirstMsg
Else
Result := LastRead;
End;
Procedure TQWKEngine.ResetSentFlagByQLR;
Begin
Reset (QwkLRFile);
ioReset (MBaseFile, SizeOf(RecMessageBase), fmRWDN);
While Not Eof(QwkLRFile) Do Begin
Read (QwkLRFile, QwkLR);
If (QwkLR.Pos > 0) and (ioSeek(MBaseFile, QwkLR.Base - 1)) Then Begin
ioRead (MBaseFile, MBase);
If MBaseOpenCreate (MsgBase, MBase, WorkPath) Then Begin
MsgBase^.SeekFirst (QwkLR.Pos);
While MsgBase^.SeekFound Do Begin
MsgBase^.MsgStartUp;
If MsgBase^.IsSent Then Begin
MsgBase^.SetSent(False);
MsgBase^.ReWriteHdr;
End;
MsgBase^.SeekNext;
End;
MsgBase^.CloseMsgBase;
Dispose(MsgBase, Done);
End;
End;
End;
Close (QwkLRFile);
Close (MBaseFile);
End;
Procedure TQWKEngine.UpdateLastReadPointers;
Begin
Reset (QwkLRFile);
ioReset (MBaseFile, SizeOf(RecMessageBase), fmRWDN);
While Not Eof(QwkLRFile) Do Begin
Read (QwkLRFile, QwkLR);
If ioSeek (MBaseFile, QwkLR.Base - 1) Then Begin
ioRead (MBaseFile, MBase);
If MBaseOpenCreate (MsgBase, MBase, WorkPath) Then Begin
MsgBase^.SetLastRead (UserNumber, QwkLR.Pos);
MsgBase^.CloseMsgBase;
Dispose(MsgBase, Done);
End;
End;
End;
Close (QwkLRFile);
Close (MBaseFile);
End;
Procedure TQWKEngine.ExportPacket (IsRep: Boolean);
Var
Temp : String;
MScan : MScanRec;
Begin
If IsRep Then
Temp := PacketID + '.msg'
Else
Temp := 'messages.dat';
DataFile := TFileBuffer.Create(16 * 1024);
DataFile.OpenStream (WorkPath + Temp, 1, fmCreate, fmRWDN);
If IsRep Then
Temp := strPadR(PacketID, 128, ' ')
Else
Temp := strPadR('Produced By ' + mysSoftwareID + ' v' + mysVersion + '. ' + mysCopyNotice, 128, ' ');
DataFile.WriteBlock (Temp[1], 128);
Assign (QwkLRFile, WorkPath + 'qlr.dat');
ReWrite (QwkLRFile);
If ioReset (MBaseFile, SizeOf(RecMessageBase), fmRWDN) Then Begin
If IsNetworked Then
ioRead (MBaseFile, MBase);
While Not Eof(MBaseFile) Do Begin
ioRead (MBaseFile, MBase);
If IsNetworked And ((MBase.QwkNetID <> UserRecord.QwkNetwork) or (UserRecord.QwkNetwork = 0)) Then
Continue;
If IsRep Or (HasAccess(Self, MBase.ReadACS)) Then Begin
If IsRep Then
MScan.QwkScan := 1
Else
GetMessageScan (UserNumber, MBase, MScan);
If MScan.QwkScan > 0 Then Begin
Inc (TotalBases);
QwkLR.Base := FilePos(MBaseFile);
QwkLR.Pos := WriteMSGDAT(IsRep);
Write (QwkLRFile, QwkLR);
End;
End;
End;
Close (MBaseFile);
End;
Close (QwkLRFile);
DataFile.Free;
WriteControlDAT;
WriteDOORID;
WriteTOREADEREXT;
End;
Function TQWKEngine.ImportPacket (IsQwk: Boolean) : Boolean;
Procedure QwkControl (Idx: LongInt; Mode: Byte);
Var
TempBase : RecMessageBase;
TempScan : MScanRec;
Begin
If GetMBaseByIndex(Idx, TempBase) Then Begin
GetMessageScan (UserNumber, TempBase, TempScan);
TempScan.QwkScan := Mode;
If Mode = 0 Then Inc (RepBaseDel);
If Mode = 1 Then Inc (RepBaseAdd);
PutMessageScan (UserNumber, TempBase, TempScan);
End;
End;
Var
QwkBlock : String[128];
QwkHeader : QwkDATHdr;
Chunks : SmallInt;
Line : String;
LineCount : SmallInt;
IsControl : Boolean;
GotControl : Boolean;
ExtFile : Text;
Count1 : SmallInt;
Count2 : SmallInt;
BaseFound : Boolean;
Begin
Result := False;
If IsQwk Then
Line := 'messages.dat'
Else
Line := PacketID + '.msg';
DataFile := TFileBuffer.Create(16 * 1024);
If Not DataFile.OpenStream (FileFind(WorkPath + Line), 1, fmOpen, fmRWDN) Then Begin
DataFile.Free;
DirClean (WorkPath, '');
Exit;
End;
DataFile.ReadBlock(QwkBlock[1], 128);
QwkBlock[0] := #128;
If Not IsQwk Then
If Pos(strUpper(PacketID), strUpper(QwkBlock)) = 0 Then Begin
DataFile.Free;
DirClean(WorkPath, '');
Exit;
End;
MsgBase := NIL;
While Not DataFile.EOF Do Begin
DataFile.ReadBlock(QwkHeader, SizeOf(QwkHeader));
Move (QwkHeader.NumChunk, QwkBlock[1], 6);
QwkBlock[0] := #6;
Chunks := strS2I(QwkBlock) - 1;
If IsNetworked Then Begin
If (MBase.QwkNetID = UserRecord.QwkNetwork) And (MBase.QwkConfID = QwkHeader.ConfNum) Then
BaseFound := True
Else Begin
BaseFound := GetMBaseByQwkID (UserRecord.QwkNetwork, QwkHeader.ConfNum, MBase);
If BaseFound and (MsgBase <> NIL) Then Begin
MsgBase^.CloseMsgBase;
Dispose (MsgBase, Done);
MsgBase := NIL;
End;
End;
End Else Begin
If MBase.Index = QwkHeader.ConfNum Then
BaseFound := True
Else Begin
BaseFound := GetMBaseByIndex (QwkHeader.ConfNum, MBase);
If BaseFound and (MsgBase <> NIL) Then Begin
MsgBase^.CloseMsgBase;
Dispose (MsgBase, Done);
MsgBase := NIL;
End;
End;
End;
If MsgBase = NIL Then
BaseFound := MBaseOpenCreate(MsgBase, MBase, WorkPath);
If BaseFound Then Begin
MBaseAssignData(UserRecord, MsgBase, MBase);
If IsNetworked Then Begin
MsgBase^.SetLocal(False);
If IsQwk Then MsgBase^.SetSent(True);
QwkBlock[0] := #25;
Move (QwkHeader.UpFrom, QwkBlock[1], 25);
MsgBase^.SetFrom(strStripR(QwkBlock, ' '));
End;
QwkBlock[0] := #25;
Move (QwkHeader.UpTo, QwkBlock[1], 25);
MsgBase^.SetTo(strStripR(QwkBlock, ' '));
Move (QwkHeader.Subject, QwkBlock[1], 25);
MsgBase^.SetSubj(strStripR(QwkBlock, ' '));
// Move (QwkHeader.ReferNum, QwkBlock[1], 6);
// QwkBlock[0] := #6;
// MsgBase^.SetRefer(strS2I(strStripR(QwkBlock, ' ')));
Line := '';
LineCount := 0;
IsControl := MsgBase^.GetTo = QWK_CONTROL;
GotControl := False;
// disable control in network packets (for now?)
// prob need to skip controls not just ignore?
If IsNetworked Then
IsControl := False;
If IsControl And ((MsgBase^.GetSubj = 'ADD') or (MsgBase^.GetSubj = 'DROP')) Then
QwkControl (MBase.Index, Ord(MsgBase^.GetSubj = 'ADD'));
For Count1 := 1 to Chunks Do Begin
DataFile.ReadBlock (QwkBlock[1], 128);
QwkBlock[0] := #128;
QwkBlock := strStripR(QwkBlock, ' ');
For Count2 := 1 to Length(QwkBlock) Do Begin
If QwkBlock[Count2] = #227 Then Begin
Inc (LineCount);
If (LineCount < 4) and (Copy(Line, 1, 5) = 'From:') Then Begin
GotControl := True;
// ignore from name unless its networked
If IsNetworked Then
MsgBase^.SetFrom(strStripB(Copy(Line, 6, Length(Line)), ' '));
End Else
If (LineCount < 4) and (Copy(Line, 1, 3) = 'To:') Then Begin
MsgBase^.SetTo(strStripB(Copy(Line, 4, Length(Line)), ' '));
GotControl := True;
End Else
If (LineCount < 4) and (Copy(Line, 1, 8) = 'Subject:') Then Begin
MsgBase^.SetSubj(strStripB(Copy(Line, 9, Length(Line)), ' '));
GotControl := True;
End Else
If GotControl And (Line = '') Then
GotControl := False
Else
MsgBase^.DoStringLn(Line);
Line := '';
End Else
Line := Line + QwkBlock[Count2];
End;
End;
If Line <> '' Then
MsgBase^.DoStringLn(Line);
If Not IsNetworked Then
If MBase.NetType > 0 Then Begin
MsgBase^.DoStringLn (#13 + '--- ' + mysSoftwareID + '/QWK v' + mysVersion + ' (' + OSID + ')');
MsgBase^.DoStringLn (' * Origin: ' + GetOriginLine(MBase) + ' (' + Addr2Str(MsgBase^.GetOrigAddr) + ')');
End;
If Not IsControl Then Begin
If (IsQwk) or (HasAccess(Self, MBase.PostACS)) Then Begin
If IsNetworked And Not IsQWK Then
MsgBase^.DoStringLn (#1'QSRC ' + UserRecord.Handle);
MsgBase^.WriteMsg;
Inc (RepOK); // must increase user and history posts by repOK
End Else
Inc (RepFailed);
End;
End Else Begin
Inc (RepFailed);
For Count1 := 1 to Chunks Do
DataFile.ReadBlock (QwkBlock[1], 128);
End;
End;
DataFile.Free;
If MsgBase <> NIL Then Begin
MsgBase^.CloseMsgBase;
Dispose (MsgBase, Done);
End;
Assign (ExtFile, FileFind(WorkPath + 'todoor.ext'));
{$I-} Reset (ExtFile); {$I+}
If IoResult = 0 Then Begin
While Not Eof(ExtFile) Do Begin
ReadLn (ExtFile, Line);
If strWordGet(1, Line, ' ') = 'AREA' Then Begin
QwkBlock := strWordGet(3, Line, ' ');
If Pos('a', QwkBlock) > 0 Then QwkControl(strS2I(strWordGet(2, Line, ' ')), 1);
If Pos('D', QwkBlock) > 0 Then QwkControl(strS2I(strWordGet(2, Line, ' ')), 0);
End;
End;
Close (ExtFile);
End;
DirClean (WorkPath, '');
Result := True;
End;
End.