system.install 52.9 KB
Newer Older
Dries's avatar
 
Dries committed
1
<?php
2

3 4 5 6
/**
 * @file
 * Install, update and uninstall functions for the system module.
 */
7

8
use Drupal\Component\FileSystem\FileSystem as FileSystemComponent;
9
use Drupal\Component\Utility\Crypt;
10
use Drupal\Component\Utility\Environment;
11
use Drupal\Component\Utility\OpCodeCache;
12
use Drupal\Component\Utility\Unicode;
13
use Drupal\Core\Database\Database;
14 15
use Drupal\Core\DrupalKernel;
use Drupal\Core\File\FileSystemInterface;
16
use Drupal\Core\Site\Settings;
17
use Drupal\Core\StreamWrapper\PrivateStream;
18
use Drupal\Core\StreamWrapper\PublicStream;
19 20
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\Core\Url;
21
use Symfony\Component\HttpFoundation\Request;
22

23
/**
24
 * Implements hook_requirements().
25 26
 */
function system_requirements($phase) {
27
  global $install_state;
28
  $requirements = [];
29 30 31

  // Report Drupal version
  if ($phase == 'runtime') {
32
    $requirements['drupal'] = [
33
      'title' => t('Drupal'),
34
      'value' => \Drupal::VERSION,
Steven Wittens's avatar
Steven Wittens committed
35 36
      'severity' => REQUIREMENT_INFO,
      'weight' => -10,
37
    ];
38

39 40
    // Display the currently active installation profile, if the site
    // is not running the default installation profile.
41
    $profile = \Drupal::installProfile();
42
    if ($profile != 'standard') {
43
      $info = \Drupal::service('extension.list.module')->getExtensionInfo($profile);
44
      $requirements['install_profile'] = [
45
        'title' => t('Installation profile'),
46
        'value' => t('%profile_name (%profile-%version)', [
47 48
          '%profile_name' => $info['name'],
          '%profile' => $profile,
49
          '%version' => $info['version'],
50
        ]),
51
        'severity' => REQUIREMENT_INFO,
52
        'weight' => -9,
53
      ];
54
    }
55 56

    // Warn if any experimental modules are installed.
57
    $experimental_modules = [];
58
    $enabled_modules = \Drupal::moduleHandler()->getModuleList();
59
    foreach ($enabled_modules as $module => $data) {
60
      $info = \Drupal::service('extension.list.module')->getExtensionInfo($module);
61
      if (isset($info['package']) && $info['package'] === 'Core (Experimental)') {
62
        $experimental_modules[$module] = $info['name'];
63 64
      }
    }
65 66
    if (!empty($experimental_modules)) {
      $requirements['experimental_modules'] = [
67
        'title' => t('Experimental modules enabled'),
68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83
        'value' => t('Experimental modules found: %module_list. <a href=":url">Experimental modules</a> are provided for testing purposes only. Use at your own risk.', ['%module_list' => implode(', ', $experimental_modules), ':url' => 'https://www.drupal.org/core/experimental']),
        'severity' => REQUIREMENT_WARNING,
      ];
    }
    // Warn if any experimental themes are installed.
    $experimental_themes = [];
    $installed_themes = \Drupal::service('theme_handler')->listInfo();
    foreach ($installed_themes as $theme => $data) {
      if (isset($data->info['experimental']) && $data->info['experimental']) {
        $experimental_themes[$theme] = $data->info['name'];
      }
    }
    if (!empty($experimental_themes)) {
      $requirements['experimental_themes'] = [
        'title' => t('Experimental themes enabled'),
        'value' => t('Experimental themes found: %theme_list. Experimental themes are provided for testing purposes only. Use at your own risk.', ['%theme_list' => implode(', ', $experimental_themes)]),
84
        'severity' => REQUIREMENT_WARNING,
85
      ];
86
    }
87 88
  }

89
  // Web server information.
90 91
  $request_object = \Drupal::request();
  $software = $request_object->server->get('SERVER_SOFTWARE');
92
  $requirements['webserver'] = [
93
    'title' => t('Web server'),
Steven Wittens's avatar
Steven Wittens committed
94
    'value' => $software,
95
  ];
96

97
  // Tests clean URL support.
98
  if ($phase == 'install' && $install_state['interactive'] && !$request_object->query->has('rewrite') && strpos($software, 'Apache') !== FALSE) {
99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121
    // If the Apache rewrite module is not enabled, Apache version must be >=
    // 2.2.16 because of the FallbackResource directive in the root .htaccess
    // file. Since the Apache version reported by the server is dependent on the
    // ServerTokens setting in httpd.conf, we may not be able to determine if a
    // given config is valid. Thus we are unable to use version_compare() as we
    // need have three possible outcomes: the version of Apache is greater than
    // 2.2.16, is less than 2.2.16, or cannot be determined accurately. In the
    // first case, we encourage the use of mod_rewrite; in the second case, we
    // raise an error regarding the minimum Apache version; in the third case,
    // we raise a warning that the current version of Apache may not be
    // supported.
    $rewrite_warning = FALSE;
    $rewrite_error = FALSE;
    $apache_version_string = 'Apache';

    // Determine the Apache version number: major, minor and revision.
    if (preg_match('/Apache\/(\d+)\.?(\d+)?\.?(\d+)?/', $software, $matches)) {
      $apache_version_string = $matches[0];

      // Major version number
      if ($matches[1] < 2) {
        $rewrite_error = TRUE;
      }
122
      elseif ($matches[1] == 2) {
123 124 125
        if (!isset($matches[2])) {
          $rewrite_warning = TRUE;
        }
126
        elseif ($matches[2] < 2) {
127 128
          $rewrite_error = TRUE;
        }
129
        elseif ($matches[2] == 2) {
130 131 132
          if (!isset($matches[3])) {
            $rewrite_warning = TRUE;
          }
133
          elseif ($matches[3] < 16) {
134 135 136 137 138 139 140 141 142 143
            $rewrite_error = TRUE;
          }
        }
      }
    }
    else {
      $rewrite_warning = TRUE;
    }

    if ($rewrite_warning) {
144
      $requirements['apache_version'] = [
145 146 147
        'title' => t('Apache version'),
        'value' => $apache_version_string,
        'severity' => REQUIREMENT_WARNING,
148 149
        'description' => t('Due to the settings for ServerTokens in httpd.conf, it is impossible to accurately determine the version of Apache running on this server. The reported value is @reported, to run Drupal without mod_rewrite, a minimum version of 2.2.16 is needed.', ['@reported' => $apache_version_string]),
      ];
150 151 152
    }

    if ($rewrite_error) {
153
      $requirements['Apache version'] = [
154 155 156
        'title' => t('Apache version'),
        'value' => $apache_version_string,
        'severity' => REQUIREMENT_ERROR,
157
        'description' => t('The minimum version of Apache needed to run Drupal without mod_rewrite enabled is 2.2.16. See the <a href=":link">enabling clean URLs</a> page for more information on mod_rewrite.', [':link' => 'http://drupal.org/docs/8/clean-urls-in-drupal-8']),
158
      ];
159 160 161
    }

    if (!$rewrite_error && !$rewrite_warning) {
162
      $requirements['rewrite_module'] = [
163 164 165
        'title' => t('Clean URLs'),
        'value' => t('Disabled'),
        'severity' => REQUIREMENT_WARNING,
166
        'description' => t('Your server is capable of using clean URLs, but it is not enabled. Using clean URLs gives an improved user experience and is recommended. <a href=":link">Enable clean URLs</a>', [':link' => 'http://drupal.org/docs/8/clean-urls-in-drupal-8']),
167
      ];
168 169 170
    }
  }

171 172 173 174 175
  // Verify the user is running a supported PHP version.
  // If the site is running a recommended version of PHP, just display it
  // as an informational message on the status report. This will be overridden
  // with an error or warning if the site is running older PHP versions for
  // which Drupal has already or will soon drop support.
176
  $phpversion = $phpversion_label = phpversion();
177
  if (function_exists('phpinfo')) {
178
    if ($phase === 'runtime') {
179
      $phpversion_label = t('@phpversion (<a href=":url">more information</a>)', ['@phpversion' => $phpversion, ':url' => (new Url('system.php'))->toString()]);
180
    }
181
    $requirements['php'] = [
182
      'title' => t('PHP'),
183
      'value' => $phpversion_label,
184
    ];
185 186
  }
  else {
187 188
    // @todo Revisit whether this description makes sense in
    //   https://www.drupal.org/project/drupal/issues/2927318.
189
    $requirements['php'] = [
190
      'title' => t('PHP'),
191
      'value' => $phpversion_label,
192
      'description' => t('The phpinfo() function has been disabled for security reasons. To see your server\'s phpinfo() information, change your PHP settings or contact your server administrator. For more information, <a href=":phpinfo">Enabling and disabling phpinfo()</a> handbook page.', [':phpinfo' => 'https://www.drupal.org/node/243993']),
193
      'severity' => REQUIREMENT_INFO,
194
    ];
195 196
  }

197 198 199 200 201 202 203 204 205
  // Check if the PHP version is below what Drupal supports.
  if (version_compare($phpversion, DRUPAL_MINIMUM_SUPPORTED_PHP) < 0) {
    $requirements['php']['description'] = t('Your PHP installation is too old. Drupal requires at least PHP %version. It is recommended to upgrade to PHP version %recommended or higher for the best ongoing support. See <a href="http://php.net/supported-versions.php">PHP\'s version support documentation</a> and the <a href=":php_requirements">Drupal 8 PHP requirements handbook page</a> for more information.',
      [
        '%version' => DRUPAL_MINIMUM_SUPPORTED_PHP,
        '%recommended' => DRUPAL_RECOMMENDED_PHP,
        ':php_requirements' => 'https://www.drupal.org/docs/8/system-requirements/php',
      ]
    );
206
    $requirements['php']['severity'] = REQUIREMENT_ERROR;
207 208 209 210 211 212 213 214 215 216

    // If the PHP version is also below the absolute minimum allowed, it's not
    // safe to continue with the requirements check.
    if (version_compare($phpversion, DRUPAL_MINIMUM_PHP) < 0) {
      return $requirements;
    }
    // Otherwise downgrade the error to a warning during updates. Even if there
    // are some problems with the site's PHP version, it's still better for the
    // site to keep its Drupal codebase up to date.
    elseif ($phase === 'update') {
217 218
      $requirements['php']['severity'] = REQUIREMENT_WARNING;
    }
219 220 221 222 223 224 225
    // Since we allow sites with unsupported PHP versions to still run Drupal
    // updates, we also need to be able to run tests with those PHP versions,
    // which requires the ability to install test sites. Not all tests are
    // required to pass on these PHP versions, but we want to monitor which
    // ones do and don't.
    elseif ($phase === 'install' && drupal_valid_test_ua()) {
      $requirements['php']['severity'] = REQUIREMENT_INFO;
226
    }
227
  }
228 229 230 231 232 233
  // For PHP versions that are still supported but no longer recommended,
  // inform users of what's recommended, allowing them to take action before it
  // becomes urgent.
  elseif ($phase === 'runtime' && version_compare($phpversion, DRUPAL_RECOMMENDED_PHP) < 0) {
    $requirements['php']['description'] = t('It is recommended to upgrade to PHP version %recommended or higher for the best ongoing support.  See <a href="http://php.net/supported-versions.php">PHP\'s version support documentation</a> and the <a href=":php_requirements">Drupal 8 PHP requirements handbook page</a> for more information.', ['%recommended' => DRUPAL_RECOMMENDED_PHP, ':php_requirements' => 'https://www.drupal.org/docs/8/system-requirements/php']);
    $requirements['php']['severity'] = REQUIREMENT_INFO;
234 235
  }

236
  // Test for PHP extensions.
237
  $requirements['php_extensions'] = [
238
    'title' => t('PHP extensions'),
239
  ];
240

241 242
  $missing_extensions = [];
  $required_extensions = [
243 244 245 246 247 248 249 250 251 252 253
    'date',
    'dom',
    'filter',
    'gd',
    'hash',
    'json',
    'pcre',
    'pdo',
    'session',
    'SimpleXML',
    'SPL',
254
    'tokenizer',
255
    'xml',
256
  ];
257 258 259 260 261 262 263
  foreach ($required_extensions as $extension) {
    if (!extension_loaded($extension)) {
      $missing_extensions[] = $extension;
    }
  }

  if (!empty($missing_extensions)) {
264
    $description = t('Drupal requires you to enable the PHP extensions in the following list (see the <a href=":system_requirements">system requirements page</a> for more information):', [
265
      ':system_requirements' => 'https://www.drupal.org/requirements',
266
    ]);
267

268
    // We use twig inline_template to avoid twig's autoescape.
269
    $description = [
270 271
      '#type' => 'inline_template',
      '#template' => '{{ description }}{{ missing_extensions }}',
272
      '#context' => [
273
        'description' => $description,
274
        'missing_extensions' => [
275 276
          '#theme' => 'item_list',
          '#items' => $missing_extensions,
277 278 279
        ],
      ],
    ];
280

281
    $requirements['php_extensions']['value'] = t('Disabled');
282 283
    $requirements['php_extensions']['severity'] = REQUIREMENT_ERROR;
    $requirements['php_extensions']['description'] = $description;
284 285
  }
  else {
286
    $requirements['php_extensions']['value'] = t('Enabled');
287 288 289 290
  }

  if ($phase == 'install' || $phase == 'runtime') {
    // Check to see if OPcache is installed.
291
    if (!OpCodeCache::isEnabled()) {
292
      $requirements['php_opcache'] = [
293 294
        'value' => t('Not enabled'),
        'severity' => REQUIREMENT_WARNING,
295
        'description' => t('PHP OPcode caching can improve your site\'s performance considerably. It is <strong>highly recommended</strong> to have <a href="http://php.net/manual/opcache.installation.php" target="_blank">OPcache</a> installed on your server.'),
296
      ];
297 298 299 300 301
    }
    else {
      $requirements['php_opcache']['value'] = t('Enabled');
    }
    $requirements['php_opcache']['title'] = t('PHP OPcode caching');
302
  }
303

304 305
  if ($phase != 'update') {
    // Test whether we have a good source of random bytes.
306
    $requirements['php_random_bytes'] = [
307
      'title' => t('Random number generation'),
308
    ];
309 310 311
    try {
      $bytes = random_bytes(10);
      if (strlen($bytes) != 10) {
312
        throw new \Exception(t('Tried to generate 10 random bytes, generated @count', ['@count' => strlen($bytes)]));
313 314 315 316 317 318 319 320 321 322 323
      }
      $requirements['php_random_bytes']['value'] = t('Successful');
    }
    catch (\Exception $e) {
      // If /dev/urandom is not available on a UNIX-like system, check whether
      // open_basedir restrictions are the cause.
      $open_basedir_blocks_urandom = FALSE;
      if (DIRECTORY_SEPARATOR === '/' && !@is_readable('/dev/urandom')) {
        $open_basedir = ini_get('open_basedir');
        if ($open_basedir) {
          $open_basedir_paths = explode(PATH_SEPARATOR, $open_basedir);
324
          $open_basedir_blocks_urandom = !array_intersect(['/dev', '/dev/', '/dev/urandom'], $open_basedir_paths);
325 326
        }
      }
327
      $args = [
328
        ':drupal-php' => 'https://www.drupal.org/docs/8/system-requirements/php-requirements',
329
        '%exception_message' => $e->getMessage(),
330
      ];
331 332 333 334 335 336 337 338 339 340 341
      if ($open_basedir_blocks_urandom) {
        $requirements['php_random_bytes']['description'] = t('Drupal is unable to generate highly randomized numbers, which means certain security features like password reset URLs are not as secure as they should be. Instead, only a slow, less-secure fallback generator is available. The most likely cause is that open_basedir restrictions are in effect and /dev/urandom is not on the whitelist. See the <a href=":drupal-php">system requirements</a> page for more information. %exception_message', $args);
      }
      else {
        $requirements['php_random_bytes']['description'] = t('Drupal is unable to generate highly randomized numbers, which means certain security features like password reset URLs are not as secure as they should be. Instead, only a slow, less-secure fallback generator is available. See the <a href=":drupal-php">system requirements</a> page for more information. %exception_message', $args);
      }
      $requirements['php_random_bytes']['value'] = t('Less secure');
      $requirements['php_random_bytes']['severity'] = REQUIREMENT_ERROR;
    }
  }

342 343
  if ($phase == 'install' || $phase == 'update') {
    // Test for PDO (database).
344
    $requirements['database_extensions'] = [
345
      'title' => t('Database support'),
346
    ];
347

348
    // Make sure PDO is available.
349
    $database_ok = extension_loaded('pdo');
350
    if (!$database_ok) {
351
      $pdo_message = t('Your web server does not appear to support PDO (PHP Data Objects). Ask your hosting provider if they support the native PDO extension. See the <a href=":link">system requirements</a> page for more information.', [
352
        ':link' => 'https://www.drupal.org/requirements/pdo',
353
      ]);
354 355 356
    }
    else {
      // Make sure at least one supported database driver exists.
357
      $drivers = drupal_detect_database_types();
358 359
      if (empty($drivers)) {
        $database_ok = FALSE;
360
        $pdo_message = t('Your web server does not appear to support any common PDO database extensions. Check with your hosting provider to see if they support PDO (PHP Data Objects) and offer any databases that <a href=":drupal-databases">Drupal supports</a>.', [
361
          ':drupal-databases' => 'https://www.drupal.org/requirements/database',
362
        ]);
363 364 365 366 367
      }
      // Make sure the native PDO extension is available, not the older PEAR
      // version. (See install_verify_pdo() for details.)
      if (!defined('PDO::ATTR_DEFAULT_FETCH_MODE')) {
        $database_ok = FALSE;
368
        $pdo_message = t('Your web server seems to have the wrong version of PDO installed. Drupal requires the PDO extension from PHP core. This system has the older PECL version. See the <a href=":link">system requirements</a> page for more information.', [
369
          ':link' => 'https://www.drupal.org/requirements/pdo#pecl',
370
        ]);
371
      }
372
    }
373

374
    if (!$database_ok) {
375
      $requirements['database_extensions']['value'] = t('Disabled');
376
      $requirements['database_extensions']['severity'] = REQUIREMENT_ERROR;
377
      $requirements['database_extensions']['description'] = $pdo_message;
378 379
    }
    else {
380
      $requirements['database_extensions']['value'] = t('Enabled');
381
    }
382
  }
383 384
  else {
    // Database information.
385
    $class = Database::getConnection()->getDriverClass('Install\\Tasks');
386
    $tasks = new $class();
387
    $requirements['database_system'] = [
388
      'title' => t('Database system'),
389
      'value' => $tasks->name(),
390 391
    ];
    $requirements['database_system_version'] = [
392
      'title' => t('Database system version'),
393
      'value' => Database::getConnection()->version(),
394
    ];
395
  }
396

397
  // Test PHP memory_limit
398
  $memory_limit = ini_get('memory_limit');
399
  $requirements['php_memory_limit'] = [
400
    'title' => t('PHP memory limit'),
401
    'value' => $memory_limit == -1 ? t('-1 (Unlimited)') : $memory_limit,
402
  ];
403

404
  if (!Environment::checkMemoryLimit(DRUPAL_MINIMUM_PHP_MEMORY_LIMIT, $memory_limit)) {
405
    $description = [];
406
    if ($phase == 'install') {
407
      $description['phase'] = t('Consider increasing your PHP memory limit to %memory_minimum_limit to help prevent errors in the installation process.', ['%memory_minimum_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT]);
408 409
    }
    elseif ($phase == 'update') {
410
      $description['phase'] = t('Consider increasing your PHP memory limit to %memory_minimum_limit to help prevent errors in the update process.', ['%memory_minimum_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT]);
411
    }
412
    elseif ($phase == 'runtime') {
413
      $description['phase'] = t('Depending on your configuration, Drupal can run with a %memory_limit PHP memory limit. However, a %memory_minimum_limit PHP memory limit or above is recommended, especially if your site uses additional custom or contributed modules.', ['%memory_limit' => $memory_limit, '%memory_minimum_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT]);
414
    }
415

416
    if (!empty($description['phase'])) {
417
      if ($php_ini_path = get_cfg_var('cfg_file_path')) {
418
        $description['memory'] = t('Increase the memory limit by editing the memory_limit parameter in the file %configuration-file and then restart your web server (or contact your system administrator or hosting provider for assistance).', ['%configuration-file' => $php_ini_path]);
419 420
      }
      else {
421
        $description['memory'] = t('Contact your system administrator or hosting provider for assistance with increasing your PHP memory limit.');
422
      }
423

424
      $handbook_link = t('For more information, see the online handbook entry for <a href=":memory-limit">increasing the PHP memory limit</a>.', [':memory-limit' => 'https://www.drupal.org/node/207036']);
425

426
      $description = [
427 428
        '#type' => 'inline_template',
        '#template' => '{{ description_phase }} {{ description_memory }} {{ handbook }}',
429
        '#context' => [
430 431 432
          'description_phase' => $description['phase'],
          'description_memory' => $description['memory'],
          'handbook' => $handbook_link,
433 434
        ],
      ];
435 436

      $requirements['php_memory_limit']['description'] = $description;
437
      $requirements['php_memory_limit']['severity'] = REQUIREMENT_WARNING;
438
    }
439
  }
440

441
  // Test configuration files and directory for writability.
442
  if ($phase == 'runtime') {
443
    $conf_errors = [];
444 445 446 447 448 449 450 451
    // Find the site path. Kernel service is not always available at this point,
    // but is preferred, when available.
    if (\Drupal::hasService('kernel')) {
      $site_path = \Drupal::service('site.path');
    }
    else {
      $site_path = DrupalKernel::findSitePath(Request::createFromGlobals());
    }
452 453 454 455
    // Allow system administrators to disable permissions hardening for the site
    // directory. This allows additional files in the site directory to be
    // updated when they are managed in a version control system.
    if (Settings::get('skip_permissions_hardening')) {
456
      $error_value = t('Protection disabled');
457 458 459 460 461
      // If permissions hardening is disabled, then only show a warning for a
      // writable file, as a reminder, rather than an error.
      $file_protection_severity = REQUIREMENT_WARNING;
    }
    else {
462
      $error_value = t('Not protected');
463 464 465
      // In normal operation, writable files or directories are an error.
      $file_protection_severity = REQUIREMENT_ERROR;
      if (!drupal_verify_install_file($site_path, FILE_NOT_WRITABLE, 'dir')) {
466
        $conf_errors[] = t("The directory %file is not protected from modifications and poses a security risk. You must change the directory's permissions to be non-writable.", ['%file' => $site_path]);
467
      }
468
    }
469
    foreach (['settings.php', 'settings.local.php', 'services.yml'] as $conf_file) {
470
      $full_path = $site_path . '/' . $conf_file;
471
      if (file_exists($full_path) && !drupal_verify_install_file($full_path, FILE_EXIST | FILE_READABLE | FILE_NOT_WRITABLE, 'file', !Settings::get('skip_permissions_hardening'))) {
472
        $conf_errors[] = t("The file %file is not protected from modifications and poses a security risk. You must change the file's permissions to be non-writable.", ['%file' => $full_path]);
473 474 475 476 477 478 479
      }
    }
    if (!empty($conf_errors)) {
      if (count($conf_errors) == 1) {
        $description = $conf_errors[0];
      }
      else {
480
        // We use twig inline_template to avoid double escaping.
481
        $description = [
482 483
          '#type' => 'inline_template',
          '#template' => '{{ configuration_error_list }}',
484 485
          '#context' => [
            'configuration_error_list' => [
486 487
              '#theme' => 'item_list',
              '#items' => $conf_errors,
488 489 490
            ],
          ],
        ];
491
      }
492
      $requirements['configuration_files'] = [
493
        'value' => $error_value,
494
        'severity' => $file_protection_severity,
495
        'description' => $description,
496
      ];
497 498
    }
    else {
499
      $requirements['configuration_files'] = [
500
        'value' => t('Protected'),
501
      ];
502
    }
503
    $requirements['configuration_files']['title'] = t('Configuration files');
504 505
  }

506 507 508 509
  // Test the contents of the .htaccess files.
  if ($phase == 'runtime') {
    // Try to write the .htaccess files first, to prevent false alarms in case
    // (for example) the /tmp directory was wiped.
510 511 512 513 514
    /** @var \Drupal\Core\File\HtaccessWriterInterface $htaccessWriter */
    $htaccessWriter = \Drupal::service("file.htaccess_writer");
    $htaccessWriter->ensure();
    foreach ($htaccessWriter->defaultProtectedDirs() as $protected_dir) {
      $htaccess_file = $protected_dir->getPath() . '/.htaccess';
515 516 517
      // Check for the string which was added to the recommended .htaccess file
      // in the latest security update.
      if (!file_exists($htaccess_file) || !($contents = @file_get_contents($htaccess_file)) || strpos($contents, 'Drupal_Security_Do_Not_Remove_See_SA_2013_003') === FALSE) {
518
        $url = 'https://www.drupal.org/SA-CORE-2013-003';
519
        $requirements[$htaccess_file] = [
520
          'title' => new TranslatableMarkup($protected_dir->getTitle()),
521 522
          'value' => t('Not fully protected'),
          'severity' => REQUIREMENT_ERROR,
523
          'description' => t('See <a href=":url">@url</a> for information about the recommended .htaccess file which should be added to the %directory directory to help protect against arbitrary code execution.', [':url' => $url, '@url' => $url, '%directory' => $protected_dir->getPath()]),
524
        ];
525 526 527 528
      }
    }
  }

529
  // Report cron status.
530
  if ($phase == 'runtime') {
531
    $cron_config = \Drupal::config('system.cron');
532
    // Cron warning threshold defaults to two days.
533
    $threshold_warning = $cron_config->get('threshold.requirements_warning');
534
    // Cron error threshold defaults to two weeks.
535
    $threshold_error = $cron_config->get('threshold.requirements_error');
536

537
    // Determine when cron last ran.
538
    $cron_last = \Drupal::state()->get('system.cron_last');
539
    if (!is_numeric($cron_last)) {
540
      $cron_last = \Drupal::state()->get('install_time', 0);
541
    }
542

543
    // Determine severity based on time since cron last ran.
544
    $severity = REQUIREMENT_INFO;
545
    if (REQUEST_TIME - $cron_last > $threshold_error) {
546
      $severity = REQUIREMENT_ERROR;
547
    }
548
    elseif (REQUEST_TIME - $cron_last > $threshold_warning) {
549 550 551 552
      $severity = REQUIREMENT_WARNING;
    }

    // Set summary and description based on values determined above.
553
    $summary = t('Last run @time ago', ['@time' => \Drupal::service('date.formatter')->formatTimeDiffSince($cron_last)]);
554

555
    $requirements['cron'] = [
556
      'title' => t('Cron maintenance tasks'),
557 558
      'severity' => $severity,
      'value' => $summary,
559
    ];
560 561 562 563 564 565 566
    if ($severity != REQUIREMENT_INFO) {
      $requirements['cron']['description'][] = [
        [
          '#markup' => t('Cron has not run recently.'),
          '#suffix' => ' ',
        ],
        [
567
          '#markup' => t('For more information, see the online handbook entry for <a href=":cron-handbook">configuring cron jobs</a>.', [':cron-handbook' => 'https://www.drupal.org/cron']),
568 569 570 571 572 573
          '#suffix' => ' ',
        ],
      ];
    }
    $requirements['cron']['description'][] = [
      [
574 575 576 577 578
        '#type' => 'link',
        '#prefix' => '(',
        '#title' => t('more information'),
        '#suffix' => ')',
        '#url' => Url::fromRoute('system.cron_settings'),
579 580
      ],
      [
581 582 583 584 585
        '#prefix' => '<span class="cron-description__run-cron">',
        '#suffix' => '</span>',
        '#type' => 'link',
        '#title' => t('Run cron'),
        '#url' => Url::fromRoute('system.run_cron'),
586 587
      ],
    ];
588
  }
589
  if ($phase != 'install') {
590
    $filesystem_config = \Drupal::config('system.file');
591
    $directories = [
592
      PublicStream::basePath(),
593 594
      // By default no private files directory is configured. For private files
      // to be secure the admin needs to provide a path outside the webroot.
595
      PrivateStream::basePath(),
596
      \Drupal::service('file_system')->getTempDirectory(),
597
    ];
598
  }
599

600 601
  // During an install we need to make assumptions about the file system
  // unless overrides are provided in settings.php.
602
  if ($phase == 'install') {
603
    $directories = [];
604
    if ($file_public_path = Settings::get('file_public_path')) {
605
      $directories[] = $file_public_path;
606 607 608
    }
    else {
      // If we are installing Drupal, the settings.php file might not exist yet
609
      // in the intended site directory, so don't require it.
610 611 612
      $request = Request::createFromGlobals();
      $site_path = DrupalKernel::findSitePath($request);
      $directories[] = $site_path . '/files';
613
    }
614 615
    if ($file_private_path = Settings::get('file_private_path')) {
      $directories[] = $file_private_path;
616
    }
617 618
    if (Settings::get('file_temp_path')) {
      $directories[] = Settings::get('file_temp_path');
619 620 621 622
    }
    else {
      // If the temporary directory is not overridden use an appropriate
      // temporary path for the system.
623
      $directories[] = FileSystemComponent::getOsTemporaryDirectory();
624
    }
625 626
  }

627 628 629
  // Check the config directory if it is defined in settings.php. If it isn't
  // defined, the installer will create a valid config directory later, but
  // during runtime we must always display an error.
630 631 632 633 634 635 636 637 638
  $config_sync_directory = Settings::get('config_sync_directory');
  if (!empty($config_sync_directory)) {
    // If we're installing Drupal try and create the config sync directory.
    if (!is_dir($config_sync_directory) && $phase == 'install') {
      \Drupal::service('file_system')->prepareDirectory($config_sync_directory, FileSystemInterface::CREATE_DIRECTORY | FileSystemInterface::MODIFY_PERMISSIONS);
    }
    if (!is_dir($config_sync_directory)) {
      if ($phase == 'install') {
        $description = t('An automated attempt to create the directory %directory failed, possibly due to a permissions problem. To proceed with the installation, either create the directory and modify its permissions manually or ensure that the installer has the permissions to create it automatically. For more information, see INSTALL.txt or the <a href=":handbook_url">online handbook</a>.', ['%directory' => $config_sync_directory, ':handbook_url' => 'https://www.drupal.org/server-permissions']);
639
      }
640 641
      else {
        $description = t('The directory %directory does not exist.', ['%directory' => $config_sync_directory]);
642
      }
643 644 645 646 647
      $requirements['config sync directory'] = [
        'title' => t('Configuration sync directory'),
        'description' => $description,
        'severity' => REQUIREMENT_ERROR,
      ];
648
    }
649
  }
650 651 652
  if ($phase != 'install' && empty($config_sync_directory)) {
    $requirements['config sync directory'] = [
      'title' => t('Configuration sync directory'),
653
      'value' => t('Not present'),
654
      'description' => t("Your %file file must define the %setting setting as a string containing the directory in which configuration files can be found.", ['%file' => $site_path . '/settings.php', '%setting' => "\$settings['config_sync_directory']"]),
655
      'severity' => REQUIREMENT_ERROR,
656
    ];
657 658
  }

659
  $requirements['file system'] = [
660
    'title' => t('File system'),
661
  ];
662

663 664 665
  $error = '';
  // For installer, create the directories if possible.
  foreach ($directories as $directory) {
666 667 668
    if (!$directory) {
      continue;
    }
669
    if ($phase == 'install') {
670
      \Drupal::service('file_system')->prepareDirectory($directory, FileSystemInterface::CREATE_DIRECTORY | FileSystemInterface::MODIFY_PERMISSIONS);
671
    }
672 673 674 675
    $is_writable = is_writable($directory);
    $is_directory = is_dir($directory);
    if (!$is_writable || !$is_directory) {
      $description = '';
676
      $requirements['file system']['value'] = t('Not writable');
677
      if (!$is_directory) {
678
        $error = t('The directory %directory does not exist.', ['%directory' => $directory]);
679 680
      }
      else {
681
        $error = t('The directory %directory is not writable.', ['%directory' => $directory]);
682 683 684
      }
      // The files directory requirement check is done only during install and runtime.
      if ($phase == 'runtime') {
685
        $description = t('You may need to set the correct directory at the <a href=":admin-file-system">file system settings page</a> or change the current directory\'s permissions so that it is writable.', [':admin-file-system' => Url::fromRoute('system.file_system_settings')->toString()]);
686 687 688 689
      }
      elseif ($phase == 'install') {
        // For the installer UI, we need different wording. 'value' will
        // be treated as version, so provide none there.
690
        $description = t('An automated attempt to create this directory failed, possibly due to a permissions problem. To proceed with the installation, either create the directory and modify its permissions manually or ensure that the installer has the permissions to create it automatically. For more information, see INSTALL.txt or the <a href=":handbook_url">online handbook</a>.', [':handbook_url' => 'https://www.drupal.org/server-permissions']);
691 692 693
        $requirements['file system']['value'] = '';
      }
      if (!empty($description)) {
694
        $description = [
695 696
          '#type' => 'inline_template',
          '#template' => '{{ error }} {{ description }}',
697
          '#context' => [
698 699
            'error' => $error,
            'description' => $description,
700 701
          ],
        ];
702 703 704
        $requirements['file system']['description'] = $description;
        $requirements['file system']['severity'] = REQUIREMENT_ERROR;
      }
705 706
    }
    else {
707 708
      // This function can be called before the config_cache table has been
      // created.
709
      if ($phase == 'install' || \Drupal::config('system.file')->get('default_scheme') == 'public') {
710
        $requirements['file system']['value'] = t('Writable (<em>public</em> download method)');
711 712
      }
      else {
713
        $requirements['file system']['value'] = t('Writable (<em>private</em> download method)');
714
      }
715 716 717
    }
  }

718 719
  // See if updates are available in update.php.
  if ($phase == 'runtime') {
720
    $requirements['update'] = [
721 722
      'title' => t('Database updates'),
      'value' => t('Up to date'),
723
    ];
724 725

    // Check installed modules.
726
    $has_pending_updates = FALSE;