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

<?php
/**
 * pluginsRemove.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 $RBAC;
switch ($RBAC->userCanAccess('PM_SETUP_ADVANCE'))
{
	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;
}*/

G::LoadClass( "plugin" );
G::LoadSystem('inputfilter');
$filter = new InputFilter();
$pluginName = $_REQUEST['pluginUid'];
$pluginName = $filter->xssFilterHard($pluginName);

if (file_exists( PATH_PLUGINS . $pluginName . '.php' )) {
    $pluginRegistry = &PMPluginRegistry::getSingleton();

    $pluginRegistry->uninstallPlugin( $pluginName );
    $path = $filter->validateInput(PATH_DATA_SITE . 'plugin.singleton', 'path');
    $pluginRegistry->unSerializeInstance( file_get_contents( $path ) );
}
G::auditLog('RemovePlugin','Plugin Name: '.$pluginName);
echo $pluginName . ' ' . nl2br( $filter->xssFilterHard(G::LoadTranslation( 'ID_MSG_REMOVE_PLUGIN_SUCCESS' )) );