luos/workflow/engine/methods/setup/upgrade.php

<?php
/**
 * upgrade.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.
 *
 */
global $RBAC;
$access = $RBAC->userCanAccess('PM_SETUP_ADVANCE');
if( $access != 1 ){
  switch ($access)
  {
  	case -1:
  	  G::SendTemporalMessage('ID_USER_HAVENT_RIGHTS_PAGE', 'error', 'labels');
  	  G::header('location: ../login/login');
  	  die;
  	break;
  	case -2:
  	  G::SendTemporalMessage('ID_USER_HAVENT_RIGHTS_SYSTEM', 'error', 'labels');
  	  G::header('location: ../login/login');
  	  die;
  	break;
  	default:
  	  G::SendTemporalMessage('ID_USER_HAVENT_RIGHTS_PAGE', 'error', 'labels');
  	  G::header('location: ../login/login');
  	  die;
  	break;  	
  }
}  
//calculating the max upload file size;
  $POST_MAX_SIZE   = ini_get('post_max_size');
  $mul = substr($POST_MAX_SIZE, -1);
  $mul = ($mul == 'M' ? 1048576 : ($mul == 'K' ? 1024 : ($mul == 'G' ? 1073741824 : 1)));
  $postMaxSize = (int)$POST_MAX_SIZE * $mul;
  
  $UPLOAD_MAX_SIZE = ini_get('upload_max_filesize');
  $mul = substr($UPLOAD_MAX_SIZE, -1);
  $mul = ($mul == 'M' ? 1048576 : ($mul == 'K' ? 1024 : ($mul == 'G' ? 1073741824 : 1)));
  $uploadMaxSize = (int)$UPLOAD_MAX_SIZE * $mul;

  if ( $postMaxSize < $uploadMaxSize ) $uploadMaxSize = $postMaxSize;


  $G_MAIN_MENU            = 'processmaker';
  $G_SUB_MENU             = 'setup';
  $G_ID_MENU_SELECTED     = 'SETUP';
  $G_ID_SUB_MENU_SELECTED = 'UPGRADE';
  
  G::LoadClass("system");
  
  $Fields['PM_VERSION']    = System::getVersion();
  $Fields['MAX_FILE_SIZE'] = $uploadMaxSize .  " (" . $UPLOAD_MAX_SIZE . ") ";
  
  $G_PUBLISH = new Publisher;
  $G_PUBLISH->AddContent('xmlform', 'xmlform', 'setup/upgrade', '', $Fields, 'upgrade_System');
  G::RenderPage('publishBlank', 'blank');