UpdateKernel.php 6.72 KB
Newer Older
1 2 3 4 5 6 7
<?php

namespace Drupal\Core\Update;

use Drupal\Core\DrupalKernel;
use Drupal\Core\Session\AnonymousUserSession;
use Drupal\Core\Site\Settings;
8
use Drupal\Core\StackMiddleware\ReverseProxyMiddleware;
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
use Symfony\Cmf\Component\Routing\RouteObjectInterface;
use Symfony\Component\HttpFoundation\ParameterBag;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;

/**
 * Defines a kernel which is used primarily to run the update of Drupal.
 *
 * We use a dedicated kernel + front controller (update.php) in order to be able
 * to repair Drupal if it is in a broken state.
 *
 * @see update.php
 * @see \Drupal\system\Controller\DbUpdateController
 */
class UpdateKernel extends DrupalKernel {

25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
  /**
   * {@inheritdoc}
   */
  public function discoverServiceProviders() {
    parent::discoverServiceProviders();

    $this->serviceProviderClasses['app']['update_kernel'] = 'Drupal\Core\Update\UpdateServiceProvider';
  }

  /**
   * {@inheritdoc}
   */
  protected function initializeContainer() {
    // Always force a container rebuild, in order to be able to override some
    // services, see \Drupal\Core\Update\UpdateServiceProvider.
    $this->containerNeedsRebuild = TRUE;
    $container = parent::initializeContainer();
    return $container;
  }

  /**
   * {@inheritdoc}
   */
  protected function cacheDrupalContainer(array $container_definition) {
    // Don't save this particular container to cache, so it does not leak into
    // the main site at all.
    return FALSE;
  }

54 55 56 57 58 59 60 61 62
  /**
   * {@inheritdoc}
   */
  public function handle(Request $request, $type = self::MASTER_REQUEST, $catch = TRUE) {
    try {
      static::bootEnvironment();

      // First boot up basic things, like loading the include files.
      $this->initializeSettings($request);
63
      ReverseProxyMiddleware::setSettingsOnRequest($request, Settings::getInstance());
64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110
      $this->boot();
      $container = $this->getContainer();
      /** @var \Symfony\Component\HttpFoundation\RequestStack $request_stack */
      $request_stack = $container->get('request_stack');
      $request_stack->push($request);
      $this->preHandle($request);

      // Handle the actual request. We need the session both for authentication
      // as well as the DB update, like
      // \Drupal\system\Controller\DbUpdateController::batchFinished.
      $this->bootSession($request, $type);
      $result = $this->handleRaw($request);
      $this->shutdownSession($request);

      return $result;
    }
    catch (\Exception $e) {
      return $this->handleException($e, $request, $type);
    }
  }

  /**
   * Generates the actual result of update.php.
   *
   * The actual logic of the update is done in the db update controller.
   *
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   The incoming request.
   *
   * @return \Symfony\Component\HttpFoundation\Response
   *   A response object.
   *
   * @see \Drupal\system\Controller\DbUpdateController
   */
  protected function handleRaw(Request $request) {
    $container = $this->getContainer();

    $this->handleAccess($request, $container);

    /** @var \Drupal\Core\Controller\ControllerResolverInterface $controller_resolver */
    $controller_resolver = $container->get('controller_resolver');

    /** @var callable $db_update_controller */
    $db_update_controller = $controller_resolver->getControllerFromDefinition('\Drupal\system\Controller\DbUpdateController::handle');

    $this->setupRequestMatch($request);

111 112 113
    /** @var \Symfony\Component\HttpKernel\Controller\ArgumentResolverInterface $argument_resolver */
    $argument_resolver = $container->get('http_kernel.controller.argument_resolver');
    $arguments = $argument_resolver->getArguments($request, $db_update_controller);
114 115 116 117 118 119
    return call_user_func_array($db_update_controller, $arguments);
  }

  /**
   * Boots up the session.
   *
120
   * This method + shutdownSession() basically simulates what
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188
   * \Drupal\Core\StackMiddleware\Session does.
   *
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   The incoming request.
   */
  protected function bootSession(Request $request) {
    $container = $this->getContainer();
    /** @var \Symfony\Component\HttpFoundation\Session\SessionInterface $session */
    $session = $container->get('session');
    $session->start();
    $request->setSession($session);
  }

  /**
   * Ensures that the session is saved.
   *
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   The incoming request.
   */
  protected function shutdownSession(Request $request) {
    if ($request->hasSession()) {
      $request->getSession()->save();
    }
  }

  /**
   * Set up the request with fake routing data for update.php.
   *
   * This fake routing data is needed in order to make batch API work properly.
   *
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   The incoming request.
   */
  protected function setupRequestMatch(Request $request) {
    $path = $request->getPathInfo();
    $args = explode('/', ltrim($path, '/'));

    $request->attributes->set(RouteObjectInterface::ROUTE_NAME, 'system.db_update');
    $request->attributes->set(RouteObjectInterface::ROUTE_OBJECT, $this->getContainer()->get('router.route_provider')->getRouteByName('system.db_update'));
    $op = $args[0] ?: 'info';
    $request->attributes->set('op', $op);
    $request->attributes->set('_raw_variables', new ParameterBag(['op' => $op]));
  }

  /**
   * Checks if the current user has rights to access updates page.
   *
   * If the current user does not have the rights, an exception is thrown.
   *
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   The incoming request.
   *
   * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
   *   Thrown when update.php should not be accessible.
   */
  protected function handleAccess(Request $request) {
    /** @var \Drupal\Core\Authentication\AuthenticationManager $authentication_manager */
    $authentication_manager = $this->getContainer()->get('authentication');
    $account = $authentication_manager->authenticate($request) ?: new AnonymousUserSession();

    /** @var \Drupal\Core\Session\AccountProxyInterface $current_user */
    $current_user = $this->getContainer()->get('current_user');
    $current_user->setAccount($account);

    /** @var \Drupal\system\Access\DbUpdateAccessCheck $db_update_access */
    $db_update_access = $this->getContainer()->get('access_check.db_update');

    if (!Settings::get('update_free_access', FALSE) && !$db_update_access->access($account)->isAllowed()) {
189
      throw new AccessDeniedHttpException('In order to run update.php you need to either have "Administer software updates" permission or have set $settings[\'update_free_access\'] in your settings.php.');
190 191 192 193
    }
  }

}