Indy/Lib/Source/IdSystatServer.pas

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

  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 1.7    12/2/2004 4:23:58 PM  JPMugaas
  Adjusted for changes in Core.

  Rev 1.6    10/26/2004 10:49:20 PM  JPMugaas
  Updated ref.

  Rev 1.5    2004.02.03 5:44:30 PM  czhower
  Name changes

  Rev 1.4    1/21/2004 4:04:04 PM  JPMugaas
  InitComponent

  Rev 1.3    2/24/2003 10:29:50 PM  JPMugaas

  Rev 1.2    1/17/2003 07:10:58 PM  JPMugaas
  Now compiles under new framework.

  Rev 1.1    1/8/2003 05:53:54 PM  JPMugaas
  Switched stuff to IdContext.

  Rev 1.0    11/13/2002 08:02:28 AM  JPMugaas
}

unit IdSystatServer;

{
  Indy Systat Client TIdSystatServer

  Copyright (C) 2002 Winshoes Working Group
  Original author J. Peter Mugaas
  2002-August-13
  Based on RFC 866
  Note that this protocol is officially called Active User
}

interface

{$i IdCompilerDefines.inc}

uses
  Classes,
  IdAssignedNumbers,
  IdContext,
  IdCustomTCPServer;

type
  TIdSystatEvent = procedure (AThread: TIdContext; AResults : TStrings) of object;

Type
  TIdSystatServer = class(TIdCustomTCPServer)
  protected
    FOnSystat : TIdSystatEvent;
    //
    function DoExecute(AThread: TIdContext): boolean; override;
  public
    constructor Create(AOwner: TComponent); override;
  published
    property OnSystat : TIdSystatEvent read FOnSystat write FOnSystat;
    property DefaultPort default IdPORT_SYSTAT;
  end;

{
Note that no result parsing is done because RFC 866 does not specify a syntax for
a user list.

Quoted from RFC 866:

   There is no specific syntax for the user list.  It is recommended
   that it be limited to the ASCII printing characters, space, carriage
   return, and line feed.  Each user should be listed on a separate
   line.
}

implementation

uses
  IdGlobal, SysUtils;

{ TIdSystatServer }

constructor TIdSystatServer.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  DefaultPort := IdPORT_SYSTAT;
end;

function TIdSystatServer.DoExecute(AThread: TIdContext): boolean;
var
  s : TStrings;
begin
  Result := True;
  if Assigned(FOnSystat) then
  begin
    s := TStringList.Create;
    try
      FOnSystat(AThread,s);
      AThread.Connection.IOHandler.Write(s);
    finally
      s.Free;
    end;
  end;
  AThread.Connection.Disconnect;
end;

end.