[DUG] Active Directory

[Myles Penlington]

Here is a simple class we use. Should give you some idea. This works my
passing in a single user id, and then getting info for that user.

 

function ADsGetObject( const lpszPathName: WideString; const riid: TIID;
out ppObject ): HRESULT; stdcall; external adslib name 'ADsGetObject';

 

 

{ TGetADInfo }

 

function TGetADInfo.Connect: Boolean;

var

  HR: HRESULT;

 

begin

  //Bind to AD to increase performance ...

  CoInitialize(nil);

  HR     := ADsGetObject( 'LDAP://RootDSE', IUnknown, FRootDSE );

  Result := Succeeded( HR );

end;

 

procedure TGetADInfo.Disconnect;

begin

  //Release out hold on the AD credentials.

  FRootDSE := nil;

  CoUninitialize;

end;

 

function TGetADInfo.GetUserProperties( const UserObject: IPersonADInfo;
PropsToGet: TUserPropertiesSet ): Boolean;

const

  PropNames: array [TUserProperty] of String = ( 'email address',
'employee ID', 'phone number', 'mobile number', 'home phone number' );

 

var

  ADUser: IADsUser;

  HR: HRESULT;

  ADQuery: WideString;

  SSID: array [0..260] of AnsiChar;

  UserSID: TByteDynArray;

  DP: Integer;

  UserProperty: TUserProperty;

  Value: String;

begin

  //Take the given user name and get the users SID, then bind to the AD
user object using the SID.

  Result  := False;

  HR      := E_UNEXPECTED;

  UserSID := nil;

  if (UserObject.UserGUID <> '') then begin

    Value := UserObject.UserGUID;

    DP    := LastDelimiter( '[{}]', Value );        //Make sure the GUID
is in the right format

    while (DP <> 0) do begin

      Delete( Value, DP, 1 );

      DP := LastDelimiter( '[{}]', Value );

    end;

    ADQuery := WideFormat( 'LDAP://<GUID=%s>', [ Value ]);

    HR      := ADsGetObject( ADQuery, IADsUser, ADUser );

  end;

  if Failed( HR ) and Assigned( UserObject.UserSID ) then begin

    FillChar( SSID, SizeOf( SSID ), 0 );

    Classes.BinToHex( PChar(UserObject.UserSID), @SSID, Length(
UserObject.UserSID ));

 

    ADQuery := WideFormat( 'LDAP://<SID=%s>', [ String( SSID )]);

    HR      := ADsGetObject( ADQuery, IADsUser, ADUser );

  end;

  if Failed( HR ) and (UserObject.UserAccount <> '') then begin

    UserSID := TUserSecurityInfo.GetAccountSID( UserObject.UserAccount
);

    if Assigned( UserSID ) then begin

      FillChar( SSID, SizeOf( SSID ), 0 );

      Classes.BinToHex( PChar( UserSID), @SSID, Length( UserSID ));

 

      ADQuery := WideFormat( 'LDAP://<SID=%s>', [ String( SSID )]);

      HR      := ADsGetObject( ADQuery, IADsUser, ADUser );

    end;

  end;

 

  if Succeeded( HR ) then begin

    UserObject.UserSID  := UserSID;

    UserObject.UserGUID := ADUser.GUID;

    for UserProperty := Low( TUserProperty ) to High( TUserProperty ) do
begin

      if (UserProperty in PropsToGet) then begin

        try

          case UserProperty of

          upEmailAddress:     begin

                                Value := ADUser.EmailAddress;

                                if (Value > '') then begin

                                  UserObject.EmailAddress := Value;

                                end;

                              end;

          upEmployeeID:       UserObject.EmployeeID :=
ADUser.EmployeeID;

          upPhoneNumber:      begin

                                Value := VarToStr(
ADUser.TelephoneNumber );

                                if (Value > '') then begin

                                  UserObject.PhoneNumber := Value;

                                end;

                              end;

          upPhoneMobile:      begin

                                Value := VarToStr(
ADUser.TelephoneMobile );

                                if (Value > '') then begin

                                  UserObject.PhoneMobile := Value;

                                end;

                              end;

          upPhoneHome:        begin

                                Value := VarToStr( ADUser.TelephoneHome
);

                                if (Value > '') then begin

                                  UserObject.PhoneHome := Value;

                                end;

                              end;

          end;

          Result := True;

        except

          on E: EOleException do begin

            if E.ErrorCode = Integer($8000500D) then begin

              TMessageLogger.LogMsg( mcWarn, 'PropertyNotAvailable',
Format( 'Could not obtain %s for user %s - person %s',[ PropNames[
UserProperty], UserObject.UserAccount, UserObject.EmployeeID ]));

            end else begin

              TMessageLogger.LogMsg( mcError, 'ADGetProperty', Format(
'Person %s, User %s, Property %s. %s',[ UserObject.EmployeeID,
UserObject.UserAccount, PropNames[ UserProperty], E.Message ]));

            end;

          end;

          on E: Exception do begin

            TMessageLogger.HandleException( Self, E );

          end;

        end;

      end;

    end;

  end;

end;

 

From: delphi-bounces at listserver.123.net.nz
[mailto:delphi-bounces at listserver.123.net.nz] On Behalf Of Jeremy
Coulter
Sent: Friday, 14 March 2008 8:00 a.m.
To: 'NZ Borland Developers Group - Delphi List'
Subject: [DUG] Active Directory

 

Hi Al.

What method are people using to connect to Active Directory from Delphi?

I have done a bit of a google around, and seem to have got confused a
bit.

 

Some exampls use ADO, and htis for some reason didnt work for me, and
other used other methods, and there were a couple that worked, but didnt
quite do what aI wanted.

I have a Win2k3 small bussiness server that I am connecting too.

I want to extract the person name and their detals like DDI and extn
number.

 

Anyone else doing anything with Active Directoty that I can look at?

 

Thanks, Jeremy



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