luos/workflow/engine/methods/cases/cases_CatchExecute.php

<?php
/**
 * cases_CatchExecute.php
 *
 * ProcessMaker Open Source Edition
 * Copyright (C) 2004 - 2008 Colosa Inc.23
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * For more information, contact Colosa Inc, 2566 Le Jeune Rd.,
 * Coral Gables, FL, 33134, USA, or email info@colosa.com.
 *
 */


/* Permissions */
switch ($RBAC->userCanAccess('PM_CASES'))
{
    case -2:
        G::SendTemporalMessage('ID_USER_HAVENT_RIGHTS_SYSTEM', 'error', 'labels');
        G::header('location: ../login/login');
        die;
        break;
    case -1:
        G::SendTemporalMessage('ID_USER_HAVENT_RIGHTS_PAGE', 'error', 'labels');
        G::header('location: ../login/login');
        die;
        break;
}


if (isset($_POST['form']['BTN_CANCEL'])) {
    header ( "Location: ../cases/main");
    die;
}

/* Includes */
G::LoadClass('case');

$oCase = new Cases();
$sAppUid   = $_SESSION['APPLICATION'];
$iDelIndex = $_SESSION['INDEX'];

$oAppDelegation = new AppDelegation();
$aDelegation = $oAppDelegation->load($sAppUid, $iDelIndex);

//if there are no user in the delegation row, this case is still in selfservice
if ( $aDelegation['USR_UID'] == "" ) {
    $oCase->setCatchUser( $_SESSION['APPLICATION'], $_SESSION['INDEX'], $_SESSION['USER_LOGGED'] );
} else {
    G::SendMessageText(G::LoadTranslation('ID_CASE_ALREADY_DERIVATED'), 'error');
}

$validation = (SYS_SKIN != 'uxs')? 'true' : 'false';

die('<script type="text/javascript">
  if ('.$validation.') {
      if (window.parent.frames.length != 0) {
          parent.location = "open?APP_UID=' . $_SESSION['APPLICATION'] . '&DEL_INDEX=' . $_SESSION['INDEX'] .
          '&action=unassigned";
      } else {
          window.location = "../cases/cases_Open?APP_UID=' . $_SESSION['APPLICATION'] . '&DEL_INDEX=' .
          $_SESSION['INDEX'] . '&action=unassigned";
      }
  } else {
      window.location = "../cases/cases_Open?APP_UID=' . $_SESSION['APPLICATION'] . '&DEL_INDEX=' .
      $_SESSION['INDEX'] . '&action=unassigned";
  }
  </script>'
);