spletna-stran/web/core/authorize.php

203 lines
7.1 KiB
PHP

<?php
/**
* @file
* Administrative script for running authorized file operations.
*
* Using this script, the site owner (the user actually owning the files on the
* webserver) can authorize certain file-related operations to proceed with
* elevated privileges, for example to deploy and upgrade modules or themes.
* Users should not visit this page directly, but instead use an administrative
* user interface which knows how to redirect the user to this script as part of
* a multistep process. This script actually performs the selected operations
* without loading all of Drupal, to be able to more gracefully recover from
* errors. Access to the script is controlled by a global killswitch in
* settings.php ('allow_authorize_operations') and via the 'administer software
* updates' permission.
*
* There are helper functions for setting up an operation to run via this
* system in modules/system/system.module. For more information, see:
* @link authorize Authorized operation helper functions @endlink
*/
use Drupal\Core\DrupalKernel;
use Drupal\Core\Form\EnforcedResponseException;
use Drupal\Core\Url;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Drupal\Core\Site\Settings;
use Drupal\Core\Routing\RouteObjectInterface;
use Symfony\Component\Routing\Route;
// Change the directory to the Drupal root.
chdir('..');
$autoloader = require_once 'autoload.php';
/**
* Global flag to identify update.php and authorize.php runs.
*
* Identifies update.php and authorize.php runs, avoiding unwanted operations
* such as css/js preprocessing and translation, and solves some theming issues.
* The flag is checked in other places in Drupal code (not just authorize.php).
*/
const MAINTENANCE_MODE = 'update';
/**
* Determines if the current user is allowed to run authorize.php.
*
* The killswitch in settings.php overrides all else, otherwise, the user must
* have access to the 'administer software updates' permission.
*
* @param \Symfony\Component\HttpFoundation\Request $request
* The incoming request.
*
* @return bool
* TRUE if the current user can run authorize.php, and FALSE if not.
*/
function authorize_access_allowed(Request $request) {
$account = \Drupal::service('authentication')->authenticate($request);
if ($account) {
\Drupal::currentUser()->setAccount($account);
}
return Settings::get('allow_authorize_operations', TRUE) && \Drupal::currentUser()->hasPermission('administer software updates');
}
try {
$request = Request::createFromGlobals();
$kernel = DrupalKernel::createFromRequest($request, $autoloader, 'prod');
$kernel->boot();
// A route is required for route matching.
$request->attributes->set(RouteObjectInterface::ROUTE_OBJECT, new Route('<none>'));
$request->attributes->set(RouteObjectInterface::ROUTE_NAME, '<none>');
$kernel->preHandle($request);
// Ensure our request includes the session if appropriate.
if (PHP_SAPI !== 'cli') {
$request->setSession($kernel->getContainer()->get('session'));
}
}
catch (HttpExceptionInterface $e) {
$response = new Response('', $e->getStatusCode());
$response->prepare($request)->send();
exit;
}
// We have to enable the user and system modules, even to check access and
// display errors via the maintenance theme.
\Drupal::moduleHandler()->addModule('system', 'core/modules/system');
\Drupal::moduleHandler()->addModule('user', 'core/modules/user');
\Drupal::moduleHandler()->load('system');
\Drupal::moduleHandler()->load('user');
// Initialize the maintenance theme for this administrative script.
drupal_maintenance_theme();
$content = [];
$show_messages = TRUE;
$is_allowed = authorize_access_allowed($request);
// Build content.
if ($is_allowed) {
// Load both the Form API and Batch API.
require_once __DIR__ . '/includes/form.inc';
require_once __DIR__ . '/includes/batch.inc';
$page_title = $request->getSession()->get('authorize_page_title', t('Authorize file system changes'));
// See if we've run the operation and need to display a report.
if ($results = $request->getSession()->remove('authorize_results')) {
// Clear the session out.
$request->getSession()->remove('authorize_operation');
$request->getSession()->remove('authorize_filetransfer_info');
if (!empty($results['page_title'])) {
$page_title = $results['page_title'];
}
if (!empty($results['page_message'])) {
\Drupal::messenger()->addMessage($results['page_message']['message'], $results['page_message']['type']);
}
$content['authorize_report'] = [
'#theme' => 'authorize_report',
'#messages' => $results['messages'],
];
if (is_array($results['tasks'])) {
$links = $results['tasks'];
}
else {
// Since this is being called outside of the primary front controller,
// the base_url needs to be set explicitly to ensure that links are
// relative to the site root.
// @todo Simplify with https://www.drupal.org/node/2548095
$default_options = [
'#type' => 'link',
'#options' => [
'absolute' => TRUE,
'base_url' => $GLOBALS['base_url'],
],
];
$links = [
$default_options + [
'#url' => Url::fromRoute('system.admin'),
'#title' => t('Administration pages'),
],
$default_options + [
'#url' => Url::fromRoute('<front>'),
'#title' => t('Front page'),
],
];
}
$content['next_steps'] = [
'#theme' => 'item_list',
'#items' => $links,
'#title' => t('Next steps'),
];
}
// If a batch is running, let it run.
elseif ($request->query->has('batch')) {
$content = _batch_page($request);
// If _batch_page() returns a response object (likely a JsonResponse for
// JavaScript-based batch processing), send it immediately.
if ($content instanceof Response) {
$content->send();
exit;
}
}
else {
if (!$request->getSession()->has('authorize_operation') || !$request->getSession()->has('authorize_filetransfer_info')) {
$content = ['#markup' => t('It appears you have reached this page in error.')];
}
elseif (!$batch = batch_get()) {
// We have a batch to process, show the filetransfer form.
try {
$content = \Drupal::formBuilder()->getForm('Drupal\Core\FileTransfer\Form\FileTransferAuthorizeForm');
}
catch (EnforcedResponseException $e) {
$e->getResponse()->send();
exit;
}
}
}
// We defer the display of messages until all operations are done.
$show_messages = !(($batch = batch_get()) && isset($batch['running']));
}
else {
\Drupal::logger('access denied')->warning('authorize.php');
$page_title = t('Access denied');
$content = ['#markup' => t('You are not allowed to access this page.')];
}
$bare_html_page_renderer = \Drupal::service('bare_html_page_renderer');
$response = $bare_html_page_renderer->renderBarePage($content, $page_title, 'maintenance_page', [
'#show_messages' => $show_messages,
]);
if (!$is_allowed) {
$response->setStatusCode(403);
}
$response->send();