system.install 37.6 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\Utility\Crypt;
9
use Drupal\Component\Utility\Environment;
10
use Drupal\Component\Utility\SafeMarkup;
11
use Drupal\Core\Url;
12 13
use Drupal\Core\Database\Database;
use Drupal\Core\Language\Language;
14
use Drupal\Core\Site\Settings;
15
use Drupal\Core\StreamWrapper\PublicStream;
16

17
/**
18
 * Implements hook_requirements().
19 20 21 22 23 24 25
 */
function system_requirements($phase) {
  $requirements = array();

  // Report Drupal version
  if ($phase == 'runtime') {
    $requirements['drupal'] = array(
26
      'title' => t('Drupal'),
27
      'value' => \Drupal::VERSION,
Steven Wittens's avatar
Steven Wittens committed
28 29
      'severity' => REQUIREMENT_INFO,
      'weight' => -10,
30
    );
31

32 33
    // Display the currently active installation profile, if the site
    // is not running the default installation profile.
34
    $profile = drupal_get_profile();
35
    if ($profile != 'standard') {
36
      $info = system_get_info('module', $profile);
37
      $requirements['install_profile'] = array(
38 39
        'title' => t('Installation profile'),
        'value' => t('%profile_name (%profile-%version)', array(
40 41 42 43 44 45 46
          '%profile_name' => $info['name'],
          '%profile' => $profile,
          '%version' => $info['version']
        )),
        'severity' => REQUIREMENT_INFO,
        'weight' => -9
      );
47
    }
48 49
  }

50
  // Web server information.
51
  $software = \Drupal::request()->server->get('SERVER_SOFTWARE');
52
  $requirements['webserver'] = array(
53
    'title' => t('Web server'),
Steven Wittens's avatar
Steven Wittens committed
54
    'value' => $software,
55 56
  );

57 58 59 60
  // Test PHP version and show link to phpinfo() if it's available
  $phpversion = phpversion();
  if (function_exists('phpinfo')) {
    $requirements['php'] = array(
61
      'title' => t('PHP'),
62
      // $phpversion is safe and output of l() is safe, so this value is safe.
63
      'value' => SafeMarkup::set(($phase == 'runtime') ? $phpversion . ' (' . \Drupal::l(t('more information'), new Url('system.php')) . ')' : $phpversion),
64 65 66 67
    );
  }
  else {
    $requirements['php'] = array(
68
      'title' => t('PHP'),
69
      'value' => $phpversion,
70
      '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.', array('@phpinfo' => 'http://drupal.org/node/243993')),
71 72 73 74
      'severity' => REQUIREMENT_INFO,
    );
  }

75
  if (version_compare($phpversion, DRUPAL_MINIMUM_PHP_DEBIAN) < 0 && version_compare($phpversion, DRUPAL_MINIMUM_PHP) < 0) {
76
    $requirements['php']['description'] = t('Your PHP installation is too old. Drupal requires at least PHP %version.', array('%version' => DRUPAL_MINIMUM_PHP));
77
    $requirements['php']['severity'] = REQUIREMENT_ERROR;
78 79
    // If PHP is old, it's not safe to continue with the requirements check.
    return $requirements;
80
  }
81

82 83
  // Test for PHP extensions.
  $requirements['php_extensions'] = array(
84
    'title' => t('PHP extensions'),
85
  );
86 87 88 89 90

  $missing_extensions = array();
  $required_extensions = array(
    'date',
    'dom',
91
    'fileinfo',
92 93 94 95 96 97 98 99 100
    'filter',
    'gd',
    'hash',
    'json',
    'pcre',
    'pdo',
    'session',
    'SimpleXML',
    'SPL',
101
    'tokenizer',
102 103 104 105 106 107 108 109 110
    'xml',
  );
  foreach ($required_extensions as $extension) {
    if (!extension_loaded($extension)) {
      $missing_extensions[] = $extension;
    }
  }

  if (!empty($missing_extensions)) {
111
    $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):', array(
112 113 114
      '@system_requirements' => 'http://drupal.org/requirements',
    ));

115 116 117 118 119
    $item_list = array(
      '#theme' => 'item_list',
      '#items' => $missing_extensions,
    );
    $description .= drupal_render($item_list);
120

121
    $requirements['php_extensions']['value'] = t('Disabled');
122 123
    $requirements['php_extensions']['severity'] = REQUIREMENT_ERROR;
    $requirements['php_extensions']['description'] = $description;
124 125
  }
  else {
126
    $requirements['php_extensions']['value'] = t('Enabled');
127
  }
128

129 130 131
  if ($phase == 'install' || $phase == 'update') {
    // Test for PDO (database).
    $requirements['database_extensions'] = array(
132
      'title' => t('Database support'),
133
    );
134

135
    // Make sure PDO is available.
136
    $database_ok = extension_loaded('pdo');
137
    if (!$database_ok) {
138
      $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.', array(
139 140 141 142 143
        '@link' => 'http://drupal.org/requirements/pdo',
      ));
    }
    else {
      // Make sure at least one supported database driver exists.
144
      $drivers = drupal_detect_database_types();
145 146
      if (empty($drivers)) {
        $database_ok = FALSE;
147
        $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>.', array(
148 149 150 151 152 153 154
          '@drupal-databases' => 'http://drupal.org/node/270#database',
        ));
      }
      // 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;
155
        $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.', array(
156 157 158
          '@link' => 'http://drupal.org/requirements/pdo#pecl',
        ));
      }
159
    }
160

161
    if (!$database_ok) {
162
      $requirements['database_extensions']['value'] = t('Disabled');
163
      $requirements['database_extensions']['severity'] = REQUIREMENT_ERROR;
164
      $requirements['database_extensions']['description'] = $pdo_message;
165 166
    }
    else {
167
      $requirements['database_extensions']['value'] = t('Enabled');
168
    }
169
  }
170 171
  else {
    // Database information.
172
    $class = Database::getConnection()->getDriverClass('Install\\Tasks');
173 174
    $tasks = new $class();
    $requirements['database_system'] = array(
175
      'title' => t('Database system'),
176 177 178
      'value' => $tasks->name(),
    );
    $requirements['database_system_version'] = array(
179
      'title' => t('Database system version'),
180 181 182
      'value' => Database::getConnection()->version(),
    );
  }
183

184
  // Test PHP memory_limit
185
  $memory_limit = ini_get('memory_limit');
186
  $requirements['php_memory_limit'] = array(
187
    'title' => t('PHP memory limit'),
188
    'value' => $memory_limit == -1 ? t('-1 (Unlimited)') : $memory_limit,
189
  );
190

191
  if (!Environment::checkMemoryLimit(DRUPAL_MINIMUM_PHP_MEMORY_LIMIT, $memory_limit)) {
192 193
    $description = '';
    if ($phase == 'install') {
194
      $description = t('Consider increasing your PHP memory limit to %memory_minimum_limit to help prevent errors in the installation process.', array('%memory_minimum_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT));
195 196
    }
    elseif ($phase == 'update') {
197
      $description = t('Consider increasing your PHP memory limit to %memory_minimum_limit to help prevent errors in the update process.', array('%memory_minimum_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT));
198
    }
199
    elseif ($phase == 'runtime') {
200
      $description = 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.', array('%memory_limit' => $memory_limit, '%memory_minimum_limit' => DRUPAL_MINIMUM_PHP_MEMORY_LIMIT));
201
    }
202

203 204
    if (!empty($description)) {
      if ($php_ini_path = get_cfg_var('cfg_file_path')) {
205
        $description .= ' ' . 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).', array('%configuration-file' => $php_ini_path));
206 207
      }
      else {
208
        $description .= ' ' . t('Contact your system administrator or hosting provider for assistance with increasing your PHP memory limit.');
209
      }
210

211
      $requirements['php_memory_limit']['description'] = $description . ' ' . t('For more information, see the online handbook entry for <a href="@memory-limit">increasing the PHP memory limit</a>.', array('@memory-limit' => 'http://drupal.org/node/207036'));
212
      $requirements['php_memory_limit']['severity'] = REQUIREMENT_WARNING;
213
    }
214
  }
215

216
  // Test configuration files and directory for writability.
217
  if ($phase == 'runtime') {
218 219 220
    $conf_errors = array();
    $conf_path = conf_path();
    if (!drupal_verify_install_file($conf_path, FILE_NOT_WRITABLE, 'dir')) {
221
      $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.", array('%file' => $conf_path));
222
    }
223
    foreach (array('settings.php', 'settings.local.php', 'services.yml') as $conf_file) {
224 225
      $full_path = $conf_path . '/' . $conf_file;
      if (file_exists($full_path) && !drupal_verify_install_file($full_path, FILE_EXIST|FILE_READABLE|FILE_NOT_WRITABLE)) {
226
        $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.", array('%file' => $full_path));
227 228 229 230 231 232 233
      }
    }
    if (!empty($conf_errors)) {
      if (count($conf_errors) == 1) {
        $description = $conf_errors[0];
      }
      else {
234 235 236 237 238
        $item_list = array(
          '#theme' => 'item_list',
          '#items' => $conf_errors,
        );
        $description = drupal_render($item_list);
239
      }
240
      $requirements['configuration_files'] = array(
241
        'value' => t('Not protected'),
242
        'severity' => REQUIREMENT_ERROR,
243
        'description' => $description,
244 245 246
      );
    }
    else {
247
      $requirements['configuration_files'] = array(
248
        'value' => t('Protected'),
249 250
      );
    }
251
    $requirements['configuration_files']['title'] = t('Configuration files');
252 253
  }

254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286
  // 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.
    file_ensure_htaccess();
    $htaccess_files['public://.htaccess'] = array(
      'title' => t('Public files directory'),
      'directory' => drupal_realpath('public://'),
    );
    if (\Drupal::config('system.file')->get('path.private')) {
      $htaccess_files['private://.htaccess'] = array(
        'title' => t('Private files directory'),
        'directory' => drupal_realpath('private://'),
      );
    }
    $htaccess_files['temporary://.htaccess'] = array(
      'title' => t('Temporary files directory'),
      'directory' => drupal_realpath('temporary://'),
    );
    foreach ($htaccess_files as $htaccess_file => $info) {
      // Check for the string which was added to the recommended .htaccess file
      // in the latest security update.
      if (!file_exists($htaccess_file) || !($contents = @file_get_contents($htaccess_file)) || strpos($contents, 'Drupal_Security_Do_Not_Remove_See_SA_2013_003') === FALSE) {
        $requirements[$htaccess_file] = array(
          'title' => $info['title'],
          'value' => t('Not fully protected'),
          'severity' => REQUIREMENT_ERROR,
          '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.', array('@url' => 'http://drupal.org/SA-CORE-2013-003', '%directory' => $info['directory'])),
        );
      }
    }
  }

287
  // Report cron status.
288
  if ($phase == 'runtime') {
289
    $cron_config = \Drupal::config('system.cron');
290
    // Cron warning threshold defaults to two days.
291
    $threshold_warning = $cron_config->get('threshold.requirements_warning');
292
    // Cron error threshold defaults to two weeks.
293
    $threshold_error = $cron_config->get('threshold.requirements_error');
294
    // Cron configuration help text.
295
    $help = t('For more information, see the online handbook entry for <a href="@cron-handbook">configuring cron jobs</a>.', array('@cron-handbook' => 'http://drupal.org/cron'));
296

297
    // Determine when cron last ran.
298
    $cron_last = \Drupal::state()->get('system.cron_last');
299
    if (!is_numeric($cron_last)) {
300
      $cron_last = \Drupal::state()->get('install_time', 0);
301
    }
302

303
    // Determine severity based on time since cron last ran.
304
    $severity = REQUIREMENT_INFO;
305
    if (REQUEST_TIME - $cron_last > $threshold_error) {
306
      $severity = REQUIREMENT_ERROR;
307
    }
308
    elseif (REQUEST_TIME - $cron_last > $threshold_warning) {
309 310 311 312
      $severity = REQUIREMENT_WARNING;
    }

    // Set summary and description based on values determined above.
313
    $summary = t('Last run !time ago', array('!time' => \Drupal::service('date.formatter')->formatInterval(REQUEST_TIME - $cron_last)));
314
    $description = '';
315
    if ($severity != REQUIREMENT_INFO) {
316
      $description = t('Cron has not run recently.') . ' ' . $help;
317
    }
318

319 320
    $description .= ' ' . t('You can <a href="@cron">run cron manually</a>.', array('@cron' => \Drupal::url('system.run_cron')));
    $description .= '<br />' . t('To run cron from outside the site, go to <a href="!cron">!cron</a>', array('!cron' => \Drupal::url('system.cron', array('key' => \Drupal::state()->get('system.cron_key'), array('absolute' => TRUE)))));
321

322
    $requirements['cron'] = array(
323
      'title' => t('Cron maintenance tasks'),
324 325
      'severity' => $severity,
      'value' => $summary,
326 327 328 329 330
      // @todo This string is concatenated from t() calls, safe drupal_render()
      //   output, whitespace, and <br /> tags, so is safe. However, as a best
      //   practice, we should not use SafeMarkup::set() around a variable. Fix
      //   in: https://www.drupal.org/node/2296929
      'description' => SafeMarkup::set($description),
331
    );
332
  }
333
  if ($phase != 'install') {
334
    $filesystem_config = \Drupal::config('system.file');
335
    $directories = array(
336
      PublicStream::basePath(),
337 338 339 340 341 342
      // By default no private files directory is configured. For private files
      // to be secure the admin needs to provide a path outside the webroot.
      $filesystem_config->get('path.private'),
      file_directory_temp(),
    );
  }
343

344 345
  // During an install we need to make assumptions about the file system
  // unless overrides are provided in settings.php.
346
  if ($phase == 'install') {
347
    $directories = array();
348
    if ($file_public_path = Settings::get('file_public_path')) {
349
      $directories[] = $file_public_path;
350 351 352
    }
    else {
      // If we are installing Drupal, the settings.php file might not exist yet
353 354
      // in the intended site directory, so don't require it.
      $directories[] = conf_path(FALSE) . '/files';
355
    }
356 357
    if (!empty($GLOBALS['config']['system.file']['path']['private'])) {
      $directories[] = $GLOBALS['config']['system.file']['path']['private'];
358
    }
359 360
    if (!empty($GLOBALS['config']['system.file']['path']['temporary'])) {
      $directories[] = $GLOBALS['config']['system.file']['path']['temporary'];
361 362 363 364 365 366
    }
    else {
      // If the temporary directory is not overridden use an appropriate
      // temporary path for the system.
      $directories[] = file_directory_os_temp();
    }
367 368
  }

369 370 371
  // 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.
372 373 374
  if (!empty($GLOBALS['config_directories'])) {
    $directories[] = config_get_config_directory(CONFIG_ACTIVE_DIRECTORY);
    $directories[] = config_get_config_directory(CONFIG_STAGING_DIRECTORY);
375 376
  }
  elseif ($phase != 'install') {
377
    $requirements['config directories'] = array(
378 379 380
      'title' => t('Configuration directories'),
      'value' => t('Not present'),
      'description' => t('Your %file file must define the $config_directories variable as an array containing the name of a directories in which configuration files can be written.', array('%file' => conf_path() . '/settings.php')),
381 382 383 384
      'severity' => REQUIREMENT_ERROR,
    );
  }

385
  $requirements['file system'] = array(
386
    'title' => t('File system'),
387
  );
388

389 390 391
  $error = '';
  // For installer, create the directories if possible.
  foreach ($directories as $directory) {
392 393 394
    if (!$directory) {
      continue;
    }
395
    if ($phase == 'install') {
396
      file_prepare_directory($directory, FILE_CREATE_DIRECTORY | FILE_MODIFY_PERMISSIONS);
397
    }
398 399 400 401
    $is_writable = is_writable($directory);
    $is_directory = is_dir($directory);
    if (!$is_writable || !$is_directory) {
      $description = '';
402
      $requirements['file system']['value'] = t('Not writable');
403
      if (!$is_directory) {
404
        $error .= t('The directory %directory does not exist.', array('%directory' => $directory)) . ' ';
405 406
      }
      else {
407
        $error .= t('The directory %directory is not writable.', array('%directory' => $directory)) . ' ';
408 409 410
      }
      // The files directory requirement check is done only during install and runtime.
      if ($phase == 'runtime') {
411
        $description = $error . t('You may need to set the correct directory at the <a href="@admin-file-system">file system settings page</a> or change the current directory\'s permissions so that it is writable.', array('@admin-file-system' => \Drupal::url('system.file_system_settings')));
412 413 414 415
      }
      elseif ($phase == 'install') {
        // For the installer UI, we need different wording. 'value' will
        // be treated as version, so provide none there.
416
        $description = $error . 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>.', array('@handbook_url' => 'http://drupal.org/server-permissions'));
417 418 419 420 421 422
        $requirements['file system']['value'] = '';
      }
      if (!empty($description)) {
        $requirements['file system']['description'] = $description;
        $requirements['file system']['severity'] = REQUIREMENT_ERROR;
      }
423 424
    }
    else {
425 426 427
      // This function can be called before the config_cache table has been
      // created.
      if ($phase == 'install' || file_default_scheme() == 'public') {
428
        $requirements['file system']['value'] = t('Writable (<em>public</em> download method)');
429 430
      }
      else {
431
        $requirements['file system']['value'] = t('Writable (<em>private</em> download method)');
432
      }
433 434 435
    }
  }

436 437 438
  // See if updates are available in update.php.
  if ($phase == 'runtime') {
    $requirements['update'] = array(
439 440
      'title' => t('Database updates'),
      'value' => t('Up to date'),
441 442 443
    );

    // Check installed modules.
444
    foreach (\Drupal::moduleHandler()->getModuleList() as $module => $filename) {
445 446 447 448 449
      $updates = drupal_get_schema_versions($module);
      if ($updates !== FALSE) {
        $default = drupal_get_installed_schema_version($module);
        if (max($updates) > $default) {
          $requirements['update']['severity'] = REQUIREMENT_ERROR;
450
          $requirements['update']['value'] = t('Out of date');
451
          $requirements['update']['description'] = t('Some modules have database schema updates to install. You should run the <a href="@update">database update script</a> immediately.', array('@update' => \Drupal::url('system.db_update')));
452 453 454 455
          break;
        }
      }
    }
456 457 458
    if (!isset($requirements['update']['severity']) && \Drupal::service('entity.definition_update_manager')->needsUpdates()) {
      $requirements['update']['severity'] = REQUIREMENT_ERROR;
      $requirements['update']['value'] = t('Out of date');
459
      $requirements['update']['description'] = t('Some modules have database schema updates to install. You should run the <a href="@update">database update script</a> immediately.', array('@update' => \Drupal::url('system.db_update')));
460
    }
461 462
  }

463 464
  // Verify the update.php access setting
  if ($phase == 'runtime') {
465
    if (Settings::get('update_free_access')) {
466
      $requirements['update access'] = array(
467
        'value' => t('Not protected'),
468
        'severity' => REQUIREMENT_ERROR,
469
        'description' => t('The update.php script is accessible to everyone without authentication check, which is a security risk. You must change the @settings_name value in your settings.php back to FALSE.', array('@settings_name' => '$settings[\'update_free_access\']')),
470 471 472 473
      );
    }
    else {
      $requirements['update access'] = array(
474
        'value' => t('Protected'),
475 476
      );
    }
477
    $requirements['update access']['title'] = t('Access to update.php');
478 479
  }

480 481
  // Display an error if a newly introduced dependency in a module is not resolved.
  if ($phase == 'update') {
482
    $profile = drupal_get_profile();
483 484
    $files = system_rebuild_module_data();
    foreach ($files as $module => $file) {
485
      // Ignore disabled modules and installation profiles.
486
      if (!$file->status || $module == $profile) {
487 488 489 490 491 492
        continue;
      }
      // Check the module's PHP version.
      $name = $file->info['name'];
      $php = $file->info['php'];
      if (version_compare($php, PHP_VERSION, '>')) {
493
        $requirements['php']['description'] .= t('@name requires at least PHP @version.', array('@name' => $name, '@version' => $php));
494 495 496 497 498 499 500 501
        $requirements['php']['severity'] = REQUIREMENT_ERROR;
      }
      // Check the module's required modules.
      foreach ($file->requires as $requirement) {
        $required_module = $requirement['name'];
        // Check if the module exists.
        if (!isset($files[$required_module])) {
          $requirements["$module-$required_module"] = array(
502 503
            'title' => t('Unresolved dependency'),
            'description' => t('@name requires this module.', array('@name' => $name)),
504 505 506 507 508 509 510 511
            'value' => t('@required_name (Missing)', array('@required_name' => $required_module)),
            'severity' => REQUIREMENT_ERROR,
          );
          continue;
        }
        // Check for an incompatible version.
        $required_file = $files[$required_module];
        $required_name = $required_file->info['name'];
512
        $version = str_replace(\Drupal::CORE_COMPATIBILITY . '-', '', $required_file->info['version']);
513 514 515 516
        $compatibility = drupal_check_incompatibility($requirement, $version);
        if ($compatibility) {
          $compatibility = rtrim(substr($compatibility, 2), ')');
          $requirements["$module-$required_module"] = array(
517 518
            'title' => t('Unresolved dependency'),
            'description' => t('@name requires this module and version. Currently using @required_name version @version', array('@name' => $name, '@required_name' => $required_name, '@version' => $version)),
519 520 521 522 523 524 525 526 527
            'value' => t('@required_name (Version @compatibility required)', array('@required_name' => $required_name, '@compatibility' => $compatibility)),
            'severity' => REQUIREMENT_ERROR,
          );
          continue;
        }
      }
    }
  }

528
  // Test Unicode library
529
  include_once DRUPAL_ROOT . '/core/includes/unicode.inc';
530 531
  $requirements = array_merge($requirements, unicode_requirements());

532
  if ($phase == 'runtime') {
533
    // Check for update status module.
534
    if (!\Drupal::moduleHandler()->moduleExists('update')) {
535
      $requirements['update status'] = array(
536
        'value' => t('Not enabled'),
537
        'severity' => REQUIREMENT_WARNING,
538 539 540 541
        'description' => t('Update notifications are not enabled. It is <strong>highly recommended</strong> that you enable the Update Manager module from the <a href="@module">module administration page</a> in order to stay up-to-date on new releases. For more information, <a href="@update">Update status handbook page</a>.', array(
          '@update' => 'http://drupal.org/documentation/modules/update',
          '@module' => \Drupal::url('system.modules_list'),
        )),
542 543 544 545
      );
    }
    else {
      $requirements['update status'] = array(
546
        'value' => t('Enabled'),
547 548
      );
    }
549
    $requirements['update status']['title'] = t('Update notifications');
550

551
    if (Settings::get('rebuild_access')) {
552 553 554 555 556 557 558
      $requirements['rebuild access'] = array(
        'title' => t('Rebuild access'),
        'value' => t('Enabled'),
        'severity' => REQUIREMENT_ERROR,
        'description' => t('The rebuild_access setting is enabled in settings.php. It is recommended to have this setting disabled unless you are performing a rebuild.'),
      );
    }
559 560
  }

561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579
  // Ensure that if upgrading from 7 to 8 we have no disabled modules.
  if ($phase == 'update' && db_table_exists('system')) {
    $modules = db_query('SELECT name, info FROM {system} WHERE type = :module AND status = 0 AND schema_version <> :schema_uninstalled', array(
      ':module' => 'module',
      ':schema_uninstalled' => SCHEMA_UNINSTALLED,
    ))->fetchAllKeyed(0, 1);
    array_walk($modules, function (&$value, $key) {
      $info = unserialize($value);
      $value = $info['name'];
    });
    if (!empty($modules)) {
      $requirements['disabled_modules'] = array(
        'severity' => REQUIREMENT_ERROR,
        'title' => t('Disabled modules'),
        'value' => format_plural(count($modules), 'The %modules module is disabled.', 'The following modules are disabled: %modules', array('%modules' => implode(', ', $modules))),
        'description' => t('Drupal 8 no longer supports disabled modules. Please either enable or uninstall them before upgrading.'),
      );
    }
  }
580 581 582
  return $requirements;
}

583
/**
584
 * Implements hook_install().
585
 */
586
function system_install() {
587
  // Populate the cron key state variable.
588
  $cron_key = Crypt::randomBytesBase64(55);
589
  \Drupal::state()->set('system.cron_key', $cron_key);
590 591 592 593 594

  // Populate the site UUID.
  \Drupal::config('system.site')
    ->set('uuid', \Drupal::service('uuid')->generate())
    ->save();
595 596
}

597
/**
598
 * Implements hook_schema().
599 600 601
 */
function system_schema() {
  $schema['batch'] = array(
602
    'description' => 'Stores details about batches (processes that run in multiple HTTP requests).',
603
    'fields' => array(
604
      'bid' => array(
605
        'description' => 'Primary Key: Unique batch ID.',
606 607 608
        // This is not a serial column, to allow both progressive and
        // non-progressive batches. See batch_process().
        'type' => 'int',
609
        'unsigned' => TRUE,
610 611
        'not null' => TRUE,
      ),
612
      'token' => array(
613
        'description' => "A string token generated against the current user's session id and the batch id, used to ensure that only the user who submitted the batch can effectively access it.",
614 615
        'type' => 'varchar',
        'length' => 64,
616 617
        'not null' => TRUE,
      ),
618
      'timestamp' => array(
619
        'description' => 'A Unix timestamp indicating when this batch was submitted for processing. Stale batches are purged at cron time.',
620
        'type' => 'int',
621 622
        'not null' => TRUE,
      ),
623
      'batch' => array(
624
        'description' => 'A serialized array containing the processing data for the batch.',
625
        'type' => 'blob',
626
        'not null' => FALSE,
627
        'size' => 'big',
628
      ),
629
    ),
630
    'primary key' => array('bid'),
631 632 633 634
    'indexes' => array(
      'token' => array('token'),
    ),
  );
635 636

  $schema['flood'] = array(
637
    'description' => 'Flood controls the threshold of events, such as the number of contact attempts.',
638
    'fields' => array(
639
      'fid' => array(
640
        'description' => 'Unique flood event ID.',
641
        'type' => 'serial',
642 643
        'not null' => TRUE,
      ),
644
      'event' => array(
645
        'description' => 'Name of event (e.g. contact).',
646 647 648
        'type' => 'varchar',
        'length' => 64,
        'not null' => TRUE,
649 650
        'default' => '',
      ),
651 652
      'identifier' => array(
        'description' => 'Identifier of the visitor, such as an IP address or hostname.',
653 654 655
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
656 657
        'default' => '',
      ),
658
      'timestamp' => array(
659
        'description' => 'Timestamp of the event.',
660 661
        'type' => 'int',
        'not null' => TRUE,
662
        'default' => 0,
663
      ),
664 665 666 667 668 669
      'expiration' => array(
        'description' => 'Expiration timestamp. Expired events are purged on cron run.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
670
    ),
671
    'primary key' => array('fid'),
672
    'indexes' => array(
673
      'allow' => array('event', 'identifier', 'timestamp'),
674
      'purge' => array('expiration'),
675
    ),
676
  );
677

678
  $schema['key_value'] = array(
679
    'description' => 'Generic key-value storage table. See the state system for an example.',
680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704
    'fields' => array(
      'collection' => array(
        'description' => 'A named collection of key and value pairs.',
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
      ),
      'name' => array(
        'description' => 'The key of the key-value pair. As KEY is a SQL reserved keyword, name was chosen instead.',
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
      ),
      'value' => array(
        'description' => 'The value.',
        'type' => 'blob',
        'not null' => TRUE,
        'size' => 'big',
      ),
    ),
    'primary key' => array('collection', 'name'),
  );

705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738
  $schema['key_value_expire'] = array(
    'description' => 'Generic key/value storage table with an expiration.',
    'fields' => array(
      'collection' => array(
        'description' => 'A named collection of key and value pairs.',
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
      ),
      'name' => array(
        // KEY is an SQL reserved word, so use 'name' as the key's field name.
        'description' => 'The key of the key/value pair.',
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
      ),
      'value' => array(
        'description' => 'The value of the key/value pair.',
        'type' => 'blob',
        'not null' => TRUE,
        'size' => 'big',
      ),
      'expire' => array(
        'description' => 'The time since Unix epoch in seconds when this item expires. Defaults to the maximum possible time.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 2147483647,
      ),
    ),
    'primary key' => array('collection', 'name'),
    'indexes' => array(
      'all' => array('name', 'collection', 'expire'),
739
      'expire' => array('expire'),
740 741 742
    ),
  );

743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759
  $schema['queue'] = array(
    'description' => 'Stores items in queues.',
    'fields' => array(
      'item_id' => array(
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'Primary Key: Unique item ID.',
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => 'The queue name.',
      ),
      'data' => array(
760
        'type' => 'blob',
761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780
        'not null' => FALSE,
        'size' => 'big',
        'serialize' => TRUE,
        'description' => 'The arbitrary data for the item.',
      ),
      'expire' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => 'Timestamp when the claim lease expires on the item.',
      ),
      'created' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => 'Timestamp when the item was created.',
      ),
    ),
    'primary key' => array('item_id'),
    'indexes' => array(
781 782
      'name_created' => array('name', 'created'),
      'expire' => array('expire'),
783 784 785
    ),
  );

786 787 788 789 790 791 792 793 794 795
  $schema['router'] = array(
    'description' => 'Maps paths to various callbacks (access, page and title)',
    'fields' => array(
      'name' => array(
        'description' => 'Primary Key: Machine name of this route',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
      ),
796 797
      'path' => array(
        'description' => 'The path for this URI',
798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
      ),
      'pattern_outline' => array(
        'description' => 'The pattern',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
      ),
      'fit' => array(
        'description' => 'A numeric representation of how specific the path is.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'route' => array(
        'description' => 'A serialized Route object',
818 819
        'type' => 'blob',
        'size' => 'big',
820 821 822 823 824 825 826 827 828 829
      ),
      'number_parts' => array(
        'description' => 'Number of parts in this router path.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small',
      ),
    ),
    'indexes' => array(
830
      'pattern_outline_fit' => array('pattern_outline', 'fit'),
831 832 833 834
    ),
    'primary key' => array('name'),
  );