{
  $Project$
  $Workfile$
  $Revision$
  $DateUTC$
  $Id$

  This file is part of the Indy (Internet Direct) project, and is offered
  under the dual-licensing agreement described on the Indy website.
  (http://www.indyproject.org/)

  Copyright:
   (c) 1993-2005, Chad Z. Hower and the Indy Pit Crew. All rights reserved.
}
{
  $Log$
}
{
  Rev 1.1    11/29/2004 11:26:00 PM  JPMugaas
  This should now support SuperTCP 7.1 running under Windows 2000.  That does
  support long filenames by the dir entry ending with one space followed by the
  long-file name.
  ShortFileName was added to the listitem class for completeness.

  Rev 1.0    11/29/2004 2:44:16 AM  JPMugaas
  New FTP list parsers for some legacy FTP servers.
}

unit IdFTPListParseSuperTCP;

interface

uses
  IdFTPList, IdFTPListParseBase, IdObjs;

type
  TIdSuperTCPFTPListItem = class(TIdFTPListItem)
  protected
    FShortFileName : String;
  public
    property ShortFileName : String read FShortFileName write FShortFileName;
  end;
  TIdFTPLPSuperTCP = class(TIdFTPListBase)
  protected
    class function IsValidWin32FileName(const AFileName : String): Boolean;
    class function IsValidMSDOSFileName(const AFileName : String): Boolean;
    class function MakeNewItem(AOwner : TIdFTPListItems)  : TIdFTPListItem; override;
    class function ParseLine(const AItem : TIdFTPListItem; const APath : String=''): Boolean; override;
  public
    class function GetIdent : String; override;
    class function CheckListing(AListing : TIdStrings; const ASysDescript : String =''; const ADetails : Boolean = True): boolean; override;
  end;

implementation
uses
  IdGlobal, IdFTPCommon, IdGlobalProtocols,
  IdSys;

{ TIdFTPLPSuperTCP }

class function TIdFTPLPSuperTCP.CheckListing(AListing: TIdStrings;
  const ASysDescript: String; const ADetails: Boolean): boolean;
{
Maybe like this:

CMT             <DIR>           11-21-94        10:17
DESIGN1.DOC          11264      05-11-95        14:20

or this:

CMT             <DIR>           11/21/94        10:17
DESIGN1.DOC          11264      05/11/95        14:20

or this with SuperTCP 7.1 running under Windows 2000:

.            <DIR>     11-29-2004  22:04 .
..           <DIR>     11-29-2004  22:04 ..
wrar341.exe  1164112   11-22-2004  15:34 wrar341.exe
test         <DIR>     11-29-2004  22:14 test
TESTDI~1     <DIR>     11-29-2004  22:16 Test Dir
TEST~1       <DIR>     11-29-2004  22:52  Test
}
var i : Integer;
  LBuf, LBuf2 : String;
begin
  Result := False;
  for i := 0 to AListing.Count -1 do
  begin
    LBuf := AListing[i];
    //filename and extension - we assume an 8.3 filename type because
    //Windows 3.1 only supports that.
    Result := IsValidMSDOSFileName( Fetch(LBuf));
    if not result then
    begin
      Exit;
    end;
    LBuf := Sys.TrimLeft(LBuf);
    //<DIR> or file size
    LBuf2 := Fetch(LBuf);
    Result := (LBuf2='<DIR>') or IsNumeric(LBuf2);   {Do not localize}
    if not result then
    begin
      Exit;
    end;
    //date
    LBuf := Sys.TrimLeft(LBuf);
    LBuf2 := Fetch(LBuf);
    Result := IsMMDDYY(LBuf2,'/') or IsMMDDYY(LBuf2,'-');
    if Result then
    begin
      //time
      LBuf := Sys.TrimLeft(LBuf);
      LBuf2 := Fetch(LBuf);
      Result := IsHHMMSS(LBuf2,':');
    end;
    if Result then
    begin
        //long filename in Win32
        //if nothing, a Windows 3.1 server probably
      if LBuf <>'' then
      begin

        Result := IsValidWin32FileName(LBuf);
      end;
    end;
    if not result then
    begin
      break;
    end;
  end;
end;

class function TIdFTPLPSuperTCP.GetIdent: String;
begin
   Result := 'SuperTCP';
end;

class function TIdFTPLPSuperTCP.IsValidMSDOSFileName(
  const AFileName: String): Boolean;
const
  VALID_DOS_CHARS =
    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrtstuvwxyz0123456789_$~!#%&-{}()@'''+#180;
var LFileName, LExt :String;
  i : Integer;
begin
  Result := False;
  if (AFileName = CUR_DIR) or (AFileName = PARENT_DIR) then
  begin
    Result := True;
    Exit;
  end;
  LExt := AFileName;
  LFileName := Fetch(LExt,'.');
  if (Length(LFileName)>0) and (Length(LFileName)<9) then
  begin
    for i := 1 to Length(LFileName) do
    begin
      if IndyPos(LFileName[i],VALID_DOS_CHARS)=0 then
      begin
        Exit;
      end;
    end;
    for i := 1 to Length(LExt) do
    begin
      if IndyPos(LExt[i],VALID_DOS_CHARS)=0 then
      begin
        Exit;
      end;
    end;
    Result := True;
  end;
end;

class function TIdFTPLPSuperTCP.IsValidWin32FileName(
  const AFileName: String): Boolean;
//from: http://linux-ntfs.sourceforge.net/ntfs/concepts/filename_namespace.html
const WIN32_INVALID_CHARS  = '"*/:<>?\|' + #0;
    WIN32_INVALID_LAST  = ' .';  //not permitted as the last character in Win32

var
  i : Integer;
begin
  Result := False;
  if (AFileName = CUR_DIR) or (AFileName = PARENT_DIR) then
  begin
    Result := True;
    Exit;
  end;
  if Length(AFileName)>0 then
  begin
    if IndyPos(AFileName[Length(AFileName)], WIN32_INVALID_LAST)>0 then
    begin
      Exit;
    end;
    for i := 1 to Length(AFileName) do
    begin
      if IndyPos(AFileName[i], WIN32_INVALID_CHARS)>0 then
      begin
        Exit;
      end;
    end;
    Result := True;
  end;
end;

class function TIdFTPLPSuperTCP.MakeNewItem(
  AOwner: TIdFTPListItems): TIdFTPListItem;
begin
  Result := TIdSuperTCPFTPListItem.Create(AOwner);
end;

class function TIdFTPLPSuperTCP.ParseLine(const AItem: TIdFTPListItem;
  const APath: String): Boolean;

var LI : TIdSuperTCPFTPListItem;

  LBuf, LBuf2 : String;

{
with SuperTCP 7.1 running under Windows 2000:

.            <DIR>     11-29-2004  22:04 .
..           <DIR>     11-29-2004  22:04 ..
wrar341.exe  1164112   11-22-2004  15:34 wrar341.exe
test         <DIR>     11-29-2004  22:14 test
TESTDI~1     <DIR>     11-29-2004  22:16 Test Dir
TEST~1       <DIR>     11-29-2004  22:52  Test
}
begin
  LI := AItem as TIdSuperTCPFTPListItem;
  LBuf := AItem.Data;
  //short filename and extension - we assume an 8.3 filename
  //type because Windows 3.1 only supports that and under Win32,
  //a short-filename is returned here.  That's with my testing.
  LBuf2 :=  Fetch(LBuf);
  LI.FileName := LBuf2;
  LI.ShortFileName := LBuf2;
  LBuf := Sys.TrimLeft(LBuf);
  //<DIR> or file size
  LBuf2 := Fetch(LBuf);
  if LBuf2 = '<DIR>' then   {Do not localize}
  begin
    LI.ItemType := ditDirectory;
    LI.SizeAvail := False;
  end
  else
  begin
    LI.ItemType := ditFile;
    Result :=  IsNumeric(LBuf2);
    if not result then
    begin
      Exit;
    end;
    LI.Size := Sys.StrToInt64(LBuf2,0);
  end;
  //date
  LBuf := Sys.TrimLeft(LBuf);
  LBuf2 := Fetch(LBuf);
  if IsMMDDYY(LBuf2,'/') or IsMMDDYY(LBuf2,'-') then
  begin
    LI.ModifiedDate := DateMMDDYY(LBuf2);
  end
  else
  begin
    Result := False;
    Exit;
  end;
  //time
  LBuf := Sys.TrimLeft(LBuf);
  LBuf2 := Fetch(LBuf);
  Result := IsHHMMSS(LBuf2,':');
  if Result then
  begin
    LI.ModifiedDate := LI.ModifiedDate + IdFTPCommon.TimeHHMMSS(LBuf2);
  end;
  // long filename
  //We do not use TrimLeft here because a space can start a filename in Windows
  //2000  and the entry would be like this:
  //
  //TESTDI~1     <DIR>     11-29-2004  22:16 Test Dir
  //TEST~1       <DIR>     11-29-2004  22:52  Test
  //
  if LBuf<>'' then
  begin
    LI.FileName := LBuf;
  end;
end;

initialization
  RegisterFTPListParser(TIdFTPLPSuperTCP);
finalization
  UnRegisterFTPListParser(TIdFTPLPSuperTCP);
end.
