module_permissions.module

<?php

/**
 * @file
 * Protects a site with the managed blacklist.
 */

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function module_permissions_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the module_permissions module.
    case 'help.page.module_permissions':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Protects a site with the managed blacklist of modules, permissions and paths.') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_module_implements_alter().
 */
function module_permissions_module_implements_alter(&$implementations, $hook) {
  if ($hook == 'form_alter') {
    $group = $implementations['module_permissions'];
    unset($implementations['module_permissions']);
    $implementations['module_permissions'] = $group;
  }
}

/**
 * Implements hook_form_alter().
 */
function module_permissions_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  /** @var \Drupal\module_permissions\Helper $helper */
  $helper = \Drupal::service('module_permissions.helper');
  switch ($form_id) {
    case 'system_modules':
      if ($helper->isRestrictedForm($form_id)) {
        $helper->alterSystemModulesForm($form, $form_state);
      }
      break;

    case 'system_modules_uninstall':
      if ($helper->isRestrictedForm($form_id)) {
        $helper->alterSystemModulesUninstallForm($form, $form_state);
      }
      break;

    case 'user_admin_permissions':
      if ($helper->isRestrictedForm($form_id)) {
        $helper->alterUserAdminPermissionsForm($form, $form_state);
      }
      break;
  }
}