--- /dev/null
+<?php
+
+namespace Drupal\update\Form;
+
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\FileTransfer\Local;
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\State\StateInterface;
+use Drupal\Core\Updater\Updater;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * Configure update settings for this site.
+ */
+class UpdateReady extends FormBase {
+
+ /**
+ * The root location under which updated projects will be saved.
+ *
+ * @var string
+ */
+ protected $root;
+
+ /**
+ * The module handler.
+ *
+ * @var \Drupal\Core\Extension\ModuleHandlerInterface
+ */
+ protected $moduleHandler;
+
+ /**
+ * The state key value store.
+ *
+ * @var \Drupal\Core\State\StateInterface
+ */
+ protected $state;
+
+ /**
+ * The Site path.
+ *
+ * @var string
+ */
+ protected $sitePath;
+
+ /**
+ * Constructs a new UpdateReady object.
+ *
+ * @param string $root
+ * The root location under which updated projects will be saved.
+ * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+ * The object that manages enabled modules in a Drupal installation.
+ * @param \Drupal\Core\State\StateInterface $state
+ * The state key value store.
+ * @param string $site_path
+ * The site path.
+ */
+ public function __construct($root, ModuleHandlerInterface $module_handler, StateInterface $state, $site_path) {
+ $this->root = $root;
+ $this->moduleHandler = $module_handler;
+ $this->state = $state;
+ $this->sitePath = $site_path;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'update_manager_update_ready_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('update.root'),
+ $container->get('module_handler'),
+ $container->get('state'),
+ $container->get('site.path')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ $this->moduleHandler->loadInclude('update', 'inc', 'update.manager');
+ if (!_update_manager_check_backends($form, 'update')) {
+ return $form;
+ }
+
+ $form['backup'] = [
+ '#prefix' => '<strong>',
+ '#markup' => $this->t('Back up your database and site before you continue. <a href=":backup_url">Learn how</a>.', [':backup_url' => 'https://www.drupal.org/node/22281']),
+ '#suffix' => '</strong>',
+ ];
+
+ $form['maintenance_mode'] = [
+ '#title' => $this->t('Perform updates with site in maintenance mode (strongly recommended)'),
+ '#type' => 'checkbox',
+ '#default_value' => TRUE,
+ ];
+
+ $form['actions'] = ['#type' => 'actions'];
+ $form['actions']['submit'] = [
+ '#type' => 'submit',
+ '#value' => $this->t('Continue'),
+ ];
+
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ // Store maintenance_mode setting so we can restore it when done.
+ $_SESSION['maintenance_mode'] = $this->state->get('system.maintenance_mode');
+ if ($form_state->getValue('maintenance_mode') == TRUE) {
+ $this->state->set('system.maintenance_mode', TRUE);
+ }
+
+ if (!empty($_SESSION['update_manager_update_projects'])) {
+ // Make sure the Updater registry is loaded.
+ drupal_get_updaters();
+
+ $updates = [];
+ $directory = _update_manager_extract_directory();
+
+ $projects = $_SESSION['update_manager_update_projects'];
+ unset($_SESSION['update_manager_update_projects']);
+
+ $project_real_location = NULL;
+ foreach ($projects as $project => $url) {
+ $project_location = $directory . '/' . $project;
+ $updater = Updater::factory($project_location, $this->root);
+ $project_real_location = drupal_realpath($project_location);
+ $updates[] = [
+ 'project' => $project,
+ 'updater_name' => get_class($updater),
+ 'local_url' => $project_real_location,
+ ];
+ }
+
+ // If the owner of the last directory we extracted is the same as the
+ // owner of our configuration directory (e.g. sites/default) where we're
+ // trying to install the code, there's no need to prompt for FTP/SSH
+ // credentials. Instead, we instantiate a Drupal\Core\FileTransfer\Local
+ // and invoke update_authorize_run_update() directly.
+ if (fileowner($project_real_location) == fileowner($this->sitePath)) {
+ $this->moduleHandler->loadInclude('update', 'inc', 'update.authorize');
+ $filetransfer = new Local($this->root);
+ $response = update_authorize_run_update($filetransfer, $updates);
+ if ($response instanceof Response) {
+ $form_state->setResponse($response);
+ }
+ }
+ // Otherwise, go through the regular workflow to prompt for FTP/SSH
+ // credentials and invoke update_authorize_run_update() indirectly with
+ // whatever FileTransfer object authorize.php creates for us.
+ else {
+ // The page title must be passed here to ensure it is initially used
+ // when authorize.php loads for the first time with the FTP/SSH
+ // credentials form.
+ system_authorized_init('update_authorize_run_update', __DIR__ . '/../../update.authorize.inc', [$updates], $this->t('Update manager'));
+ $form_state->setRedirectUrl(system_authorized_get_url());
+ }
+ }
+ }
+
+}