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

<?php
/**
 * pluginsChange.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.
 */

// lets display the items
use ProcessMaker\Plugins\PluginRegistry;

$pluginFile = $_GET['id'];
$pluginStatus = $_GET['status'];

$items = array ();
//here we are enabling or disabling the plugin and all related options registered.
$filter = new InputFilter();
$path = PATH_PLUGINS . $pluginFile;
$path = $filter->validateInput($path, 'path');

$oPluginRegistry = PluginRegistry::loadSingleton();

if ($handle = opendir(PATH_PLUGINS)) {
    while (false !== ($file = readdir($handle))) {
        if (strpos($file, '.php', 1) && $file == $pluginFile) {
            if ($pluginStatus == '1') {
                // change to disable
                $details = $oPluginRegistry->getPluginDetails($pluginFile);
                $oPluginRegistry->disablePlugin($details->getNamespace());
                $oPluginRegistry->savePlugin($details->getNamespace());
                G::auditLog("DisablePlugin", "Plugin Name: " . $details->getNamespace());
            } else {
                $pluginName = str_replace(".php", "", $pluginFile);

                if (is_file(PATH_PLUGINS . $pluginName . ".php") && is_dir(PATH_PLUGINS . $pluginName)) {
                    /*----------------------------------********---------------------------------*/
                    if (!$oPluginRegistry->isEnterprisePlugin($pluginName) &&
                        PMLicensedFeatures::getSingleton()
                            ->verifyfeature('B0oWlBLY3hHdWY0YUNpZEtFQm5CeTJhQlIwN3IxMEkwaG4=')
                    ) {
                        //Check disabled code

                        $cs = new CodeScanner(config("system.workspace"));

                        $arrayFoundDisabledCode = array_merge(
                            $cs->checkDisabledCode("FILE", PATH_PLUGINS . $pluginName . ".php"),
                            $cs->checkDisabledCode("PATH", PATH_PLUGINS . $pluginName)
                        );

                        if (!empty($arrayFoundDisabledCode)) {
                            $response = array();
                            $response["status"] = "DISABLED-CODE";
                            $response["message"] = G::LoadTranslation("ID_DISABLED_CODE_PLUGIN");

                            echo G::json_encode($response);
                            exit(0);
                        }
                    }
                    /*----------------------------------********---------------------------------*/

                    // change to ENABLED
                    require_once($path);
                    $details = $oPluginRegistry->getPluginDetails($pluginFile);
                    $oPluginRegistry->enablePlugin($details->getNamespace());
                    $oPluginRegistry->setupPlugins(); //get and setup enabled plugins
                    $oPluginRegistry->savePlugin($details->getNamespace());
                    G::auditLog("EnablePlugin", "Plugin Name: " . $details->getNamespace());
                }
            }
        }
    }
    closedir($handle);
}