v1/web/core/modules/update/update.install

<?php

/**
 * @file
 * Install, update, and uninstall functions for the Update Manager module.
 */

use Drupal\Core\Link;
use Drupal\Core\Url;
use Drupal\update\ProjectSecurityData;
use Drupal\update\ProjectSecurityRequirement;
use Drupal\update\UpdateFetcherInterface;
use Drupal\update\UpdateManagerInterface;

/**
 * Implements hook_requirements().
 *
 * Describes the status of the site regarding available updates. If
 * there is no update data, only one record will be returned, indicating that
 * the status of core can't be determined. If data is available, there will be
 * two records: one for core, and another for all of contrib (assuming there
 * are any contributed modules or themes enabled on the site). In addition to
 * the fields expected by hook_requirements ('value', 'severity', and
 * optionally 'description'), this array will contain a 'reason' attribute,
 * which is an integer constant to indicate why the given status is being
 * returned (UPDATE_NOT_SECURE, UPDATE_NOT_CURRENT, or UPDATE_UNKNOWN). This
 * is used for generating the appropriate email notification messages during
 * update_cron(), and might be useful for other modules that invoke
 * update_requirements() to find out if the site is up to date or not.
 *
 * @see _update_message_text()
 * @see _update_cron_notify()
 * @see \Drupal\update\UpdateManagerInterface
 */
function update_requirements($phase) {
  $requirements = [];
  if ($phase == 'runtime') {
    if ($available = update_get_available(FALSE)) {
      \Drupal::moduleHandler()->loadInclude('update', 'inc', 'update.compare');
      $data = update_calculate_project_data($available);
      // First, populate the requirements for core:
      $requirements['update_core'] = _update_requirement_check($data['drupal'], 'core');
      if (!empty($available['drupal']['releases'])) {
        $security_data = ProjectSecurityData::createFromProjectDataAndReleases($data['drupal'], $available['drupal']['releases'])->getCoverageInfo();
        if ($core_coverage_requirement = ProjectSecurityRequirement::createFromProjectDataAndSecurityCoverageInfo($data['drupal'], $security_data)->getRequirement()) {
          $requirements['coverage_core'] = $core_coverage_requirement;
        }
      }

      // We don't want to check drupal a second time.
      unset($data['drupal']);
      if (!empty($data)) {
        // Now, sort our $data array based on each project's status. The
        // status constants are numbered in the right order of precedence, so
        // we just need to make sure the projects are sorted in ascending
        // order of status, and we can look at the first project we find.
        uasort($data, '_update_project_status_sort');
        $first_project = reset($data);
        $requirements['update_contrib'] = _update_requirement_check($first_project, 'contrib');
      }
    }
    else {
      $requirements['update_core']['title'] = t('Drupal core update status');
      $requirements['update_core']['value'] = t('No update data available');
      $requirements['update_core']['severity'] = REQUIREMENT_WARNING;
      $requirements['update_core']['reason'] = UpdateFetcherInterface::UNKNOWN;
      $requirements['update_core']['description'] = _update_no_data();
    }
  }
  return $requirements;
}

/**
 * Implements hook_install().
 */
function update_install() {
  $queue = \Drupal::queue('update_fetch_tasks', TRUE);
  $queue->createQueue();
}

/**
 * Implements hook_uninstall().
 */
function update_uninstall() {
  \Drupal::state()->delete('update.last_check');
  \Drupal::state()->delete('update.last_email_notification');

  $queue = \Drupal::queue('update_fetch_tasks');
  $queue->deleteQueue();
}

/**
 * Fills in the requirements array.
 *
 * This is shared for both core and contrib to generate the right elements in
 * the array for hook_requirements().
 *
 * @param $project
 *   Array of information about the project we're testing as returned by
 *   update_calculate_project_data().
 * @param $type
 *   What kind of project this is ('core' or 'contrib').
 *
 * @return array
 *   An array to be included in the nested $requirements array.
 *
 * @see hook_requirements()
 * @see update_requirements()
 * @see update_calculate_project_data()
 */
function _update_requirement_check($project, $type) {
  $requirement = [];
  if ($type == 'core') {
    $requirement['title'] = t('Drupal core update status');
  }
  else {
    $requirement['title'] = t('Module and theme update status');
  }
  $status = $project['status'];
  if ($status != UpdateManagerInterface::CURRENT) {
    $requirement['reason'] = $status;
    $requirement['severity'] = REQUIREMENT_ERROR;
    // When updates are available, append the available updates link to the
    // message from _update_message_text(), and format the two translated
    // strings together in a single paragraph.
    $requirement['description'][] = ['#markup' => _update_message_text($type, $status)];
    if (!in_array($status, [UpdateFetcherInterface::UNKNOWN, UpdateFetcherInterface::NOT_CHECKED, UpdateFetcherInterface::NOT_FETCHED, UpdateFetcherInterface::FETCH_PENDING])) {
      if (_update_manager_access()) {
        $requirement['description'][] = ['#prefix' => ' ', '#markup' => t('See the <a href=":available_updates">available updates</a> page for more information and to install your missing updates.', [':available_updates' => Url::fromRoute('update.report_update')->toString()])];
      }
      else {
        $requirement['description'][] = ['#prefix' => ' ', '#markup' => t('See the <a href=":available_updates">available updates</a> page for more information.', [':available_updates' => Url::fromRoute('update.status')->toString()])];
      }
    }
  }
  switch ($status) {
    case UpdateManagerInterface::NOT_SECURE:
      $requirement_label = t('Not secure!');
      break;

    case UpdateManagerInterface::REVOKED:
      $requirement_label = t('Revoked!');
      break;

    case UpdateManagerInterface::NOT_SUPPORTED:
      $requirement_label = t('Unsupported release');
      break;

    case UpdateManagerInterface::NOT_CURRENT:
      $requirement_label = t('Out of date');
      $requirement['severity'] = REQUIREMENT_WARNING;
      break;

    case UpdateFetcherInterface::UNKNOWN:
    case UpdateFetcherInterface::NOT_CHECKED:
    case UpdateFetcherInterface::NOT_FETCHED:
    case UpdateFetcherInterface::FETCH_PENDING:
      $requirement_label = isset($project['reason']) ? $project['reason'] : t('Can not determine status');
      $requirement['severity'] = REQUIREMENT_WARNING;
      break;

    default:
      $requirement_label = t('Up to date');
  }
  if ($status != UpdateManagerInterface::CURRENT && $type == 'core' && isset($project['recommended'])) {
    $requirement_label .= ' ' . t('(version @version available)', ['@version' => $project['recommended']]);
  }
  $requirement['value'] = Link::fromTextAndUrl($requirement_label, Url::fromRoute(_update_manager_access() ? 'update.report_update' : 'update.status'))->toString();
  return $requirement;
}

/**
 * Implements hook_update_last_removed().
 */
function update_update_last_removed() {
  return 8001;
}