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class FileDownloadController in Zircon Profile 8

Same name and namespace in other branches
  1. 8.0 core/modules/system/src/FileDownloadController.php \Drupal\system\FileDownloadController

System file controller.

Hierarchy

Expanded class hierarchy of FileDownloadController

2 files declare their use of FileDownloadController
ConfigController.php in core/modules/config/src/Controller/ConfigController.php
Contains \Drupal\config\Controller\ConfigController.
ImageStyleDownloadController.php in core/modules/image/src/Controller/ImageStyleDownloadController.php
Contains \Drupal\image\Controller\ImageStyleDownloadController.

File

core/modules/system/src/FileDownloadController.php, line 19
Contains \Drupal\system\FileDownloadController.

Namespace

Drupal\system
View source
class FileDownloadController extends ControllerBase {

  /**
   * Handles private file transfers.
   *
   * Call modules that implement hook_file_download() to find out if a file is
   * accessible and what headers it should be transferred with. If one or more
   * modules returned headers the download will start with the returned headers.
   * If a module returns -1 an AccessDeniedHttpException will be thrown. If the
   * file exists but no modules responded an AccessDeniedHttpException will be
   * thrown. If the file does not exist a NotFoundHttpException will be thrown.
   *
   * @see hook_file_download()
   *
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   The request object.
   * @param string $scheme
   *   The file scheme, defaults to 'private'.
   *
   * @return \Symfony\Component\HttpFoundation\BinaryFileResponse
   *   The transferred file as response.
   *
   * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
   *   Thrown when the requested file does not exist.
   * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
   *   Thrown when the user does not have access to the file.
   */
  public function download(Request $request, $scheme = 'private') {
    $target = $request->query
      ->get('file');

    // Merge remaining path arguments into relative file path.
    $uri = $scheme . '://' . $target;
    if (file_stream_wrapper_valid_scheme($scheme) && file_exists($uri)) {

      // Let other modules provide headers and controls access to the file.
      $headers = $this
        ->moduleHandler()
        ->invokeAll('file_download', array(
        $uri,
      ));
      foreach ($headers as $result) {
        if ($result == -1) {
          throw new AccessDeniedHttpException();
        }
      }
      if (count($headers)) {

        // \Drupal\Core\EventSubscriber\FinishResponseSubscriber::onRespond()
        // sets response as not cacheable if the Cache-Control header is not
        // already modified. We pass in FALSE for non-private schemes for the
        // $public parameter to make sure we don't change the headers.
        return new BinaryFileResponse($uri, 200, $headers, $scheme !== 'private');
      }
      throw new AccessDeniedHttpException();
    }
    throw new NotFoundHttpException();
  }

}

Members

Namesort descending Modifiers Type Description Overrides
ControllerBase::$configFactory protected property The configuration factory.
ControllerBase::$currentUser protected property The current user service. 1
ControllerBase::$entityFormBuilder protected property The entity form builder.
ControllerBase::$entityManager protected property The entity manager. 1
ControllerBase::$entityTypeManager protected property The entity type manager.
ControllerBase::$formBuilder protected property The form builder. 3
ControllerBase::$keyValue protected property The key-value storage. 1
ControllerBase::$languageManager protected property The language manager. 1
ControllerBase::$moduleHandler protected property The module handler. 2
ControllerBase::$stateService protected property The state service.
ControllerBase::cache protected function Returns the requested cache bin.
ControllerBase::config protected function Retrieves a configuration object.
ControllerBase::container private function Returns the service container.
ControllerBase::create public static function Instantiates a new instance of this class. Overrides ContainerInjectionInterface::create 42
ControllerBase::currentUser protected function Returns the current user. 1
ControllerBase::entityFormBuilder protected function Retrieves the entity form builder.
ControllerBase::entityManager Deprecated protected function Retrieves the entity manager service. 1
ControllerBase::entityTypeManager protected function Retrieves the entity type manager.
ControllerBase::formBuilder protected function Returns the form builder service. 3
ControllerBase::keyValue protected function Returns a key/value storage collection. 1
ControllerBase::languageManager protected function Returns the language manager service. 1
ControllerBase::moduleHandler protected function Returns the module handler. 2
ControllerBase::state protected function Returns the state storage service.
FileDownloadController::download public function Handles private file transfers.
LinkGeneratorTrait::$linkGenerator protected property The link generator. 1
LinkGeneratorTrait::getLinkGenerator protected function Returns the link generator.
LinkGeneratorTrait::l protected function Renders a link to a route given a route name and its parameters.
LinkGeneratorTrait::setLinkGenerator public function Sets the link generator service.
RedirectDestinationTrait::$redirectDestination protected property The redirect destination service.
RedirectDestinationTrait::getDestinationArray protected function Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url.
RedirectDestinationTrait::getRedirectDestination protected function Returns the redirect destination service.
RedirectDestinationTrait::setRedirectDestination public function Sets the redirect destination service.
StringTranslationTrait::$stringTranslation protected property The string translation service.
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.
UrlGeneratorTrait::$urlGenerator protected property The url generator.
UrlGeneratorTrait::getUrlGenerator protected function Returns the URL generator service.
UrlGeneratorTrait::redirect protected function Returns a redirect response object for the specified route.
UrlGeneratorTrait::setUrlGenerator public function Sets the URL generator service.
UrlGeneratorTrait::url protected function Generates a URL or path for a specific route based on the given parameters.