protected function DrupalKernel::initializeSettings in Drupal 8

Same name and namespace in other branches

9 core/lib/Drupal/Core/DrupalKernel.php \Drupal\Core\DrupalKernel::initializeSettings()

Locate site path and initialize settings singleton.

Parameters

\Symfony\Component\HttpFoundation\Request $request: The current request.

Throws

\Symfony\Component\HttpKernel\Exception\BadRequestHttpException In case the host name in the request is not trusted.

2 calls to DrupalKernel::initializeSettings()

DrupalKernel::handle in core/lib/Drupal/Core/DrupalKernel.php: Handles a Request to convert it to a Response.
UpdateKernel::handle in core/lib/Drupal/Core/Update/UpdateKernel.php: Handles a Request to convert it to a Response.

File

core/lib/Drupal/Core/DrupalKernel.php, line 1069

Class

DrupalKernel: The DrupalKernel class is the core of Drupal itself.

Namespace

Drupal\Core

Code

protected function initializeSettings(Request $request) {
  $site_path = static::findSitePath($request);
  $this
    ->setSitePath($site_path);
  $class_loader_class = get_class($this->classLoader);
  Settings::initialize($this->root, $site_path, $this->classLoader);

  // Initialize our list of trusted HTTP Host headers to protect against
  // header attacks.
  $host_patterns = Settings::get('trusted_host_patterns', []);
  if (PHP_SAPI !== 'cli' && !empty($host_patterns)) {
    if (static::setupTrustedHosts($request, $host_patterns) === FALSE) {
      throw new BadRequestHttpException('The provided host name is not valid for this server.');
    }
  }

  // If the class loader is still the same, possibly
  // upgrade to an optimized class loader.
  if ($class_loader_class == get_class($this->classLoader) && Settings::get('class_loader_auto_detect', TRUE)) {
    $prefix = Settings::getApcuPrefix('class_loader', $this->root);
    $loader = NULL;

    // We autodetect one of the following three optimized classloaders, if
    // their underlying extension exists.
    if (function_exists('apcu_fetch')) {
      $loader = new ApcClassLoader($prefix, $this->classLoader);
    }
    elseif (extension_loaded('wincache')) {
      $loader = new WinCacheClassLoader($prefix, $this->classLoader);
    }
    elseif (extension_loaded('xcache')) {
      $loader = new XcacheClassLoader($prefix, $this->classLoader);
    }
    if (!empty($loader)) {
      $this->classLoader
        ->unregister();

      // The optimized classloader might be persistent and store cache misses.
      // For example, once a cache miss is stored in APCu clearing it on a
      // specific web-head will not clear any other web-heads. Therefore
      // fallback to the composer class loader that only statically caches
      // misses.
      $old_loader = $this->classLoader;
      $this->classLoader = $loader;

      // Our class loaders are prepended to ensure they come first like the
      // class loader they are replacing.
      $old_loader
        ->register(TRUE);
      $loader
        ->register(TRUE);
    }
  }
}

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