restemplate/indy/Protocols/IdSASLUserPass.pas

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{
$Project$
$Workfile$
$Revision$
$DateUTC$
$Id$
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 2004.02.03 5:44:18 PM czhower
Name changes
Rev 1.0 11/13/2002 08:00:40 AM JPMugaas
Base class for any mechanism that needs a username/password.
This links to a TIdUserPassProvider to allow application programmers
to only set the username/password once, instead of having to set it for
all SASL mechanisms they might want to use.
}
unit IdSASLUserPass;
interface
{$i IdCompilerDefines.inc}
uses
Classes,
IdSASL, IdUserPassProvider, IdBaseComponent,
IdException;
type
TIdSASLUserPass = class(TIdSASL)
protected
{$IFDEF USE_OBJECT_ARC}[Weak]{$ENDIF} FUserPassProvider: TIdUserPassProvider;
procedure SetUserPassProvider(const Value: TIdUserPassProvider);
{$IFNDEF USE_OBJECT_ARC}
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
{$ENDIF}
function GetUsername: string;
function GetPassword: string;
public
function IsReadyToStart: Boolean; override;
published
property UserPassProvider: TIdUserPassProvider read FUserPassProvider write SetUserPassProvider;
end;
EIdUserPassProviderUnassigned = class(EIdException);
implementation
uses IdResourceStringsProtocols;
{ TIdSASLUserPass }
function TIdSASLUserPass.GetPassword: string;
var
// under ARC, convert a weak reference to a strong reference before working with it
LUserPassProvider: TIdUserPassProvider;
begin
LUserPassProvider := FUserPassProvider;
if Assigned(LUserPassProvider) then begin
Result := LUserPassProvider.Password;
end else begin
raise EIdUserPassProviderUnassigned.Create(RSUnassignedUserPassProv);
end;
end;
function TIdSASLUserPass.GetUsername: string;
var
// under ARC, convert a weak reference to a strong reference before working with it
LUserPassProvider: TIdUserPassProvider;
begin
LUserPassProvider := FUserPassProvider;
if Assigned(LUserPassProvider) then begin
Result := LUserPassProvider.Username;
end else begin
raise EIdUserPassProviderUnassigned.Create(RSUnassignedUserPassProv);
end;
end;
function TIdSASLUserPass.IsReadyToStart;
var
// under ARC, convert a weak reference to a strong reference before working with it
LUserPassProvider: TIdUserPassProvider;
begin
LUserPassProvider := FUserPassProvider;
if Assigned(LUserPassProvider) then begin
Result := (LUserPassProvider.Username <> '');
end else begin
Result := False;
end;
end;
// under ARC, all weak references to a freed object get nil'ed automatically
{$IFNDEF USE_OBJECT_ARC}
procedure TIdSASLUserPass.Notification(AComponent: TComponent; Operation: TOperation);
begin
if (Operation = opRemove) and (AComponent = FUserPassProvider) then begin
FUserPassProvider := nil;
end;
inherited Notification(AComponent, Operation);
end;
{$ENDIF}
procedure TIdSASLUserPass.SetUserPassProvider(const Value: TIdUserPassProvider);
begin
{$IFDEF USE_OBJECT_ARC}
// under ARC, all weak references to a freed object get nil'ed automatically
FUserPassProvider := Value;
{$ELSE}
if FUserPassProvider <> Value then begin
if Assigned(FUserPassProvider) then begin
FUserPassProvider.RemoveFreeNotification(Self);
end;
FUserPassProvider := Value;
if Assigned(Value) then begin
Value.FreeNotification(Self);
end;
end;
{$ENDIF}
end;
end.