ShibAuthSubscriber.php in Shibboleth Authentication 8

Namespace

Drupal\shib_auth\EventSubscriber

File

src/EventSubscriber/ShibAuthSubscriber.php

<?php

namespace Drupal\shib_auth\EventSubscriber;

use Drupal\Core\Messenger\MessengerInterface;
use Drupal\Core\Render\Markup;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\shib_auth\Login\LoginHandler;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Drupal\Component\Utility\Xss;

/**
 * Class ShibAuthSubscriber.
 *
 * @package Drupal\shib_auth\EventSubscriber
 */
class ShibAuthSubscriber implements EventSubscriberInterface {
  use StringTranslationTrait;

  /**
   * @var \Drupal\shib_auth\Login\LoginHandler
   */
  private $lh;

  /**
   * @var MessengerInterface
   */
  private $messenger;

  /**
   * ShibAuthSubscriber constructor.
   *
   * @param \Drupal\shib_auth\Login\LoginHandler $lh
   * @param \Drupal\Core\Messenger\MessengerInterface $messenger
   */
  public function __construct(LoginHandler $lh, MessengerInterface $messenger) {
    $this->lh = $lh;
    $this->messenger = $messenger;
  }

  /**
   * Show debug messages, if needed.
   *
   * @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
   */
  public function checkForShibbolethDebug(GetResponseEvent $event) {
    $config = \Drupal::config('shib_auth.shibbolethsettings');
    if (!$config
      ->get('enable_debug_mode')) {

      // Debugging is off-- bail.
      return;
    }
    $patterns = '';
    if ($path_prefix = $config
      ->get('debug_prefix_path')) {
      $patterns = $path_prefix . "\n" . $path_prefix . '*';
    }
    $current_path = \Drupal::service('path.current')
      ->getPath();
    if ($patterns && !\Drupal::service('path.matcher')
      ->matchPath($current_path, $patterns)) {

      // Path doesn't match-- bail.
      return;
    }
    $tags = [
      'pre',
      'b',
      'br',
    ];
    $debug_message = Xss::filter('<b>' . $this
      ->t('Shibboleth debug information') . '</b>', $tags);
    $rendered_message = Markup::create($debug_message);
    $this->messenger
      ->addStatus($rendered_message);
    $current_user = \Drupal::currentUser();
    if ($current_user
      ->id()) {
      $user_info = [
        'uid' => $current_user
          ->id(),
        'name' => $current_user
          ->getAccountName(),
        'mail' => $current_user
          ->getEmail(),
        'roles' => $current_user
          ->getRoles(),
      ];
      $debug_message = Xss::filter('<b>Drupal::currentUser():</b><br/><pre>' . print_r($user_info, TRUE) . '</pre>', $tags);
      $rendered_message = Markup::create($debug_message);
      $this->messenger
        ->addStatus($rendered_message);
    }

    // Show $_SESSION variables.
    // Work around that drupal_set_message() keeps previous messages in $_SESSION.
    if (!empty($_SESSION)) {
      $session_copy = $_SESSION;
    }
    else {
      $session_copy = [];
    }
    if (isset($session_copy['messages'])) {
      unset($session_copy['messages']);
    }
    $debug_message = Xss::filter('<b>$_SESSION:</b><br/><pre>' . print_r($session_copy, TRUE) . '</pre>', $tags);
    unset($session_copy);
    $rendered_message = Markup::create($debug_message);
    $this->messenger
      ->addStatus($rendered_message);

    // Show $_SERVER variables.
    $debug_message = Xss::filter('<b>$_SERVER:</b><br/><pre>' . print_r($_SERVER, TRUE) . '</pre>', $tags);
    $rendered_message = Markup::create($debug_message);
    $this->messenger
      ->addStatus($rendered_message);

    // Show config settings.
    $settings = $config
      ->getRawData();
    $adv_config = \Drupal::config('shib_auth.advancedsettings');
    $settings += $adv_config
      ->getRawData();
    ksort($settings);
    $debug_message = Xss::filter('<b>' . $this
      ->t('Module configuration') . ':</b><br/><pre>' . print_r($settings, TRUE) . '</pre>', $tags);
    $rendered_message = Markup::create($debug_message);
    $this->messenger
      ->addStatus($rendered_message);
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events[KernelEvents::REQUEST][] = [
      'checkForShibbolethDebug',
      28,
    ];
    return $events;
  }

}

Classes

Name	Description
ShibAuthSubscriber	Class ShibAuthSubscriber.