Indy/Lib/Protocols/IdWhoIsServer.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 1.5    12/2/2004 4:24:00 PM  JPMugaas
  Adjusted for changes in Core.


  Rev 1.4    1/21/2004 4:21:18 PM  JPMugaas
  InitComponent


  Rev 1.3    2/24/2003 10:39:58 PM  JPMugaas


  Rev 1.2    1/17/2003 07:11:10 PM  JPMugaas
  Now compiles under new framework.


  Rev 1.1    1/9/2003 06:55:54 AM  JPMugaas
  Changed OnQueryEvent so users do not have to bother with WriteLn's in their
  events.
  Now works with IdContext.


  Rev 1.0    11/13/2002 08:04:48 AM  JPMugaas
}
unit IdWhoIsServer;

{
 2000-Apr-19 Hadi Hariri
  Converted to Indy

 13-JAN-2000 MTL: Moved to new Palette Scheme (Winshoes Servers)

 5.13.99 Final Version
       ?         [responds with the following]
    Please enter a name or a NIC handle, such as "Smith" or "SRI-NIC".
    Starting with a period forces a name-only search; starting with
    exclamation point forces handle-only.  Examples:
       Smith     [looks for name or handle SMITH]
       !SRI-NIC  [looks for handle SRI-NIC only]
       .Smith, John
                 [looks for name JOHN SMITH only]

    Adding "..." to the argument will match anything from that point,
    e.g. "ZU..." will match ZUL, ZUM, etc.

    To search for mailboxes, use one of these forms:

       Smith@    [looks for mailboxes with username SMITH]
       @Host     [looks for mailboxes on HOST]
       Smith@Host

 Orig Author: Ozz Nixon (RFC 954)
}
interface
{$i IdCompilerDefines.inc}

uses
  IdAssignedNumbers,
  IdContext,
  IdCustomTCPServer;

type
  TGetEvent = procedure(AContext:TIdContext; ALookup: string; var VResponse : String) of object;

  TIdWhoIsServer = class(TIdCustomTCPserver)
  protected
    FOnCommandLookup: TGetEvent;
    //
    function DoExecute(AContext:TIdContext): boolean; override;
    procedure InitComponent; override;
  published
    property OnCommandLookup: TGetEvent read FOnCommandLookup write FOnCommandLookup;
    property DefaultPort default IdPORT_WHOIS;
  end;

implementation

{ TIdWhoIsServer }

procedure TIdWhoIsServer.InitComponent;
begin
  inherited;
  DefaultPort := IdPORT_WHOIS;
end;

function TIdWhoIsServer.DoExecute(AContext:TIdContext): boolean;
var
  LRequest, VResponse: string;
begin
  Result := True;
  // Get the domain name the client is inquiring about
  LRequest := AContext.Connection.IOHandler.ReadLn;
  if Assigned(OnCommandLookup) then begin
    OnCommandLookup(AContext, LRequest, VResponse);
    AContext.Connection.IOHandler.Write(VResponse);
  end;
  AContext.Connection.Disconnect;
end;

end.