system.install 112 KB
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<?php
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// $Id$
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/**
 * Test and report Drupal installation requirements.
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 *
 * @param $phase
 *   The current system installation phase.
 * @return
 *   An array of system requirements.
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 */
function system_requirements($phase) {
  $requirements = array();
  // Ensure translations don't break at install time
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  $t = get_t();
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  // Report Drupal version
  if ($phase == 'runtime') {
    $requirements['drupal'] = array(
      'title' => $t('Drupal'),
      'value' => VERSION,
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      'severity' => REQUIREMENT_INFO,
      'weight' => -10,
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    );
  }

  // Test web server
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  $software = $_SERVER['SERVER_SOFTWARE'];
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  $requirements['webserver'] = array(
    'title' => $t('Web server'),
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    'value' => $software,
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  );
  // Use server info string, if present.
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  if ($software && preg_match('![0-9]!', $software)) {
    list($server, $version) = split('[ /]', $software);
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    switch ($server) {
      case 'Apache':
        if (version_compare($version, DRUPAL_MINIMUM_APACHE) < 0) {
          $requirements['webserver']['description'] = $t('Your Apache server is too old. Drupal requires at least Apache %version.', array('%version' => DRUPAL_MINIMUM_APACHE));
          $requirements['webserver']['severity'] = REQUIREMENT_ERROR;
        }
        break;

      default:
        $requirements['webserver']['description'] = $t('The web server you\'re using has not been tested with Drupal and might not work properly.');
        $requirements['webserver']['severity'] = REQUIREMENT_WARNING;
        break;
    }
  }
  else {
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    $requirements['webserver']['value'] = $software ? $software : $t('Unknown');
    $requirements['webserver']['description'] = $t('Unable to determine your web server type and version. Drupal might not work properly.');
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    $requirements['webserver']['severity'] = REQUIREMENT_WARNING;
  }

  // Test PHP version
  $requirements['php'] = array(
    'title' => $t('PHP'),
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    'value' => ($phase == 'runtime') ? l(phpversion(), 'admin/reports/status/php') : phpversion(),
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  );
  if (version_compare(phpversion(), DRUPAL_MINIMUM_PHP) < 0) {
    $requirements['php']['description'] = $t('Your PHP installation is too old. Drupal requires at least PHP %version.', array('%version' => DRUPAL_MINIMUM_PHP));
    $requirements['php']['severity'] = REQUIREMENT_ERROR;
  }

  // Test DB version
  global $db_type;
  if (function_exists('db_status_report')) {
    $requirements += db_status_report($phase);
  }

  // Test settings.php file writability
  if ($phase == 'runtime') {
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    $conf_dir = drupal_verify_install_file(conf_path(), FILE_NOT_WRITABLE, 'dir');
    $conf_file = drupal_verify_install_file(conf_path() .'/settings.php', FILE_EXIST|FILE_READABLE|FILE_NOT_WRITABLE);
    if (!$conf_dir || !$conf_file) {
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      $requirements['settings.php'] = array(
        'value' => $t('Not protected'),
        'severity' => REQUIREMENT_ERROR,
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        'description' => '',
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      );
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      if (!$conf_dir) {
        $requirements['settings.php']['description'] .= $t('The directory %file is not protected from modifications and poses a security risk. You must change the directory\'s permissions to be non-writable. ', array('%file' => conf_path()));
      }
      if (!$conf_file) {
        $requirements['settings.php']['description'] .= $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' => conf_path() .'/settings.php'));
      }
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    }
    else {
      $requirements['settings.php'] = array(
        'value' => $t('Protected'),
      );
    }
    $requirements['settings.php']['title'] = $t('Configuration file');
  }

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  // Report cron status.
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  if ($phase == 'runtime') {
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    // Cron warning threshold defaults to two days.
    $threshold_warning = variable_get('cron_threshold_warning', 172800);
    // Cron error threshold defaults to two weeks.
    $threshold_error = variable_get('cron_threshold_error', 1209600);
    // Cron configuration help text.
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    $help = $t('Please check the help pages for <a href="@url">configuring cron jobs</a>.', array('@url' => 'http://drupal.org/cron'));
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    // Determine when cron last ran. If never, use the install time to
    // determine the warning or error status.
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    $cron_last = variable_get('cron_last', NULL);
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    $never_run = FALSE;
    if (!is_numeric($cron_last)) {
      $never_run = TRUE;
      $cron_last = variable_get('install_time', 0);
    }
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    // Determine severity based on time since cron last ran.
    $severity = REQUIREMENT_OK;
    if (time() - $cron_last > $threshold_error) {
      $severity = REQUIREMENT_ERROR;
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    }
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    else if ($never_run || (time() - $cron_last > $threshold_warning)) {
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      $severity = REQUIREMENT_WARNING;
    }

    // If cron hasn't been run, and the user is viewing the main
    // administration page, instead of an error, we display a helpful reminder
    // to configure cron jobs.
    if ($never_run && $severity != REQUIREMENT_ERROR && $_GET['q'] == 'admin') {
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      drupal_set_message($t('Cron has not run. Please visit the <a href="@status">status report</a> for more information.', array('@status' => url('admin/reports/status'))));
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    }

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    // Set summary and description based on values determined above.
    if ($never_run) {
      $summary = $t('Never run');
      $description = $t('Cron has not run.') .' '. $help;
    }
    else {
      $summary = $t('Last run !time ago', array('!time' => format_interval(time() - $cron_last)));
      $description = '';
      if ($severity != REQUIREMENT_OK) {
        $description = $t('Cron has not run recently.') .' '. $help;
      }
    }
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    $requirements['cron'] = array(
      'title' => $t('Cron maintenance tasks'),
      'severity' => $severity,
      'value' => $summary,
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      'description' => $description .' '. $t('You can <a href="@cron">run cron manually</a>.', array('@cron' => url('admin/reports/status/run-cron'))),
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    );
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  }

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  // Test files directory
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  $directory = file_directory_path();
  $is_writable = is_writable($directory);
  $is_directory = is_dir($directory);
  if (!$is_writable || !$is_directory) {
    if (!$is_directory) {
      $error = $t('The directory %directory does not exist.', array('%directory' => $directory));
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    }
    else {
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      $error = $t('The directory %directory is not writable.', array('%directory' => $directory));
    }
    $requirements['file system'] = array(
      'value' => $t('Not writable'),
      'severity' => REQUIREMENT_ERROR,
    );
    if ($phase == 'runtime') {
      $requirements['file system']['description'] = $error .' '. $t('You may need to set the correct directory at the <a href="@admin-file-system">file system settings page</a> or change the current directory\'s permissions so that it is writable.', array('@admin-file-system' => url('admin/settings/file-system')));
    }
    else if ($phase == 'install') {
      // For the installer UI, we need different wording. 'value' will
      // be treated as version, so provide none there.
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      $requirements['file system']['description'] = $error .' '. $t('To proceed with the installation, please ensure that the files directory exists and is writable by the installer. If you are unsure how to create this directory and modify its permissions, please consult the <a href="@handbook_url">on-line handbook</a> or INSTALL.txt.', array('%directory' => $directory, '@handbook_url' => 'http://drupal.org/getting-started'));
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      $requirements['file system']['value'] = '';
    }
  }
  else {
    if (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PUBLIC) {
      $requirements['file system']['value'] = $t('Writable (<em>public</em> download method)');
    }
    else {
      $requirements['file system']['value'] = $t('Writable (<em>private</em> download method)');
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    }
  }
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  $requirements['file system']['title'] = $t('File system');
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  // See if updates are available in update.php.
  if ($phase == 'runtime') {
    $requirements['update'] = array(
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      'title' => $t('Database updates'),
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      'severity' => REQUIREMENT_OK,
      'value' => $t('Up to date'),
    );

    // Check installed modules.
    foreach (module_list() as $module) {
      $updates = drupal_get_schema_versions($module);
      if ($updates !== FALSE) {
        $default = drupal_get_installed_schema_version($module);
        if (max($updates) > $default) {
          $requirements['update']['severity'] = REQUIREMENT_ERROR;
          $requirements['update']['value'] = $t('Out of date');
          $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' => base_path() .'update.php'));
          break;
        }
      }
    }
  }

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  // Verify the update.php access setting
  if ($phase == 'runtime') {
    if (!empty($GLOBALS['update_free_access'])) {
      $requirements['update access'] = array(
        'value' => $t('Not protected'),
        'severity' => REQUIREMENT_ERROR,
        'description' => $t('The update.php script is accessible to everyone without authentication check, which is a security risk. You must change the $update_free_access value in your settings.php back to FALSE.'),
      );
    }
    else {
      $requirements['update access'] = array(
        'value' => $t('Protected'),
      );
    }
    $requirements['update access']['title'] = $t('Access to update.php');
  }

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  // Test Unicode library
  include_once './includes/unicode.inc';
  $requirements = array_merge($requirements, unicode_requirements());

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  // Check for update status module.
  if ($phase == 'runtime') {
    if (!module_exists('update')) {
      $requirements['update status'] = array(
        'value' => $t('Not enabled'),
        'severity' => REQUIREMENT_ERROR,
        'description' => $t('Update notifications are not enabled. It is <strong>highly recommended</strong> that you enable the update status module from the <a href="@module">module administration page</a> in order to stay up-to-date on new releases. For more information please read the <a href="@update">Update status handbook page</a>.', array('@update' => 'http://drupal.org/handbook/modules/update', '@module' => url('admin/build/modules'))),
      );
    }
    else {
      $requirements['update status'] = array(
        'value' => $t('Enabled'),
      );
    }
    $requirements['update status']['title'] = $t('Update notifications');
  }

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  return $requirements;
}

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/**
 * Implementation of hook_install().
 */
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function system_install() {
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  if ($GLOBALS['db_type'] == 'pgsql') {
    /* create unsigned types */
    db_query("CREATE DOMAIN int_unsigned integer CHECK (VALUE >= 0)");
    db_query("CREATE DOMAIN smallint_unsigned smallint CHECK (VALUE >= 0)");
    db_query("CREATE DOMAIN bigint_unsigned bigint CHECK (VALUE >= 0)");
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    /* create functions */
    db_query('CREATE OR REPLACE FUNCTION "greatest"(numeric, numeric) RETURNS numeric AS
      \'SELECT CASE WHEN (($1 > $2) OR ($2 IS NULL)) THEN $1 ELSE $2 END;\'
      LANGUAGE \'sql\''
    );
    db_query('CREATE OR REPLACE FUNCTION "greatest"(numeric, numeric, numeric) RETURNS numeric AS
      \'SELECT greatest($1, greatest($2, $3));\'
      LANGUAGE \'sql\''
    );
    if (!db_result(db_query("SELECT COUNT(*) FROM pg_proc WHERE proname = 'rand'"))) {
      db_query('CREATE OR REPLACE FUNCTION "rand"() RETURNS float AS
        \'SELECT random();\'
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        LANGUAGE \'sql\''
      );
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    }
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    if (!db_result(db_query("SELECT COUNT(*) FROM pg_proc WHERE proname = 'concat'"))) {
      db_query('CREATE OR REPLACE FUNCTION "concat"(text, text) RETURNS text AS
        \'SELECT $1 || $2;\'
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        LANGUAGE \'sql\''
      );
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    }
    db_query('CREATE OR REPLACE FUNCTION "if"(boolean, text, text) RETURNS text AS
      \'SELECT CASE WHEN $1 THEN $2 ELSE $3 END;\'
      LANGUAGE \'sql\''
    );
    db_query('CREATE OR REPLACE FUNCTION "if"(boolean, integer, integer) RETURNS integer AS
      \'SELECT CASE WHEN $1 THEN $2 ELSE $3 END;\'
      LANGUAGE \'sql\''
    );
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  }
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  // Create tables.
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  $modules = array('system', 'filter', 'block', 'user', 'node', 'comment', 'taxonomy');
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  foreach ($modules as $module) {
    drupal_install_schema($module);
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  }
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  // Load system theme data appropriately.
  system_theme_data();
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  // Inserting uid 0 here confuses MySQL -- the next user might be created as
  // uid 2 which is not what we want. So we insert the first user here, the
  // anonymous user. uid is 1 here for now, but very soon it will be changed
  // to 0.
  db_query("INSERT INTO {users} (name, mail) VALUES('%s', '%s')", '', '');
  // We need some placeholders here as name and mail are uniques and data is
  // presumed to be a serialized array. Install will change uid 1 immediately
  // anyways. So we insert the superuser here, the uid is 2 here for now, but
  // very soon it will be changed to 1.
  db_query("INSERT INTO {users} (name, mail, created, data) VALUES('%s', '%s', %d, '%s')", 'placeholder-for-uid-1', 'placeholder-for-uid-1', time(), serialize(array()));
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  // This sets the above two users uid 0 (anonymous). We avoid an explicit 0
  // otherwise MySQL might insert the next auto_increment value.
  db_query("UPDATE {users} SET uid = uid - uid WHERE name = '%s'", '');
  // This sets uid 1 (superuser). We skip uid 2 but that's not a big problem.
  db_query("UPDATE {users} SET uid = 1 WHERE name = '%s'", 'placeholder-for-uid-1');
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  db_query("INSERT INTO {role} (name) VALUES ('%s')", 'anonymous user');
  db_query("INSERT INTO {role} (name) VALUES ('%s')", 'authenticated user');
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  db_query("INSERT INTO {permission} (rid, perm, tid) VALUES (%d, '%s', %d)", 1, 'access content', 0);
  db_query("INSERT INTO {permission} (rid, perm, tid) VALUES (%d, '%s', %d)", 2, 'access comments, access content, post comments, post comments without approval', 0);
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  db_query("INSERT INTO {variable} (name, value) VALUES ('%s', '%s')", 'theme_default', 's:7:"garland";');
  db_query("UPDATE {system} SET status = %d WHERE type = '%s' AND name = '%s'", 1, 'theme', 'garland');
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  db_query("INSERT INTO {blocks} (module, delta, theme, status, weight, region, pages) VALUES ('%s', '%s', '%s', %d, %d, '%s', '%s')", 'user', '0', 'garland', 1, 0, 'left', '');
  db_query("INSERT INTO {blocks} (module, delta, theme, status, weight, region, pages) VALUES ('%s', '%s', '%s', %d, %d, '%s', '%s')", 'user', '1', 'garland', 1, 0, 'left', '');
  db_query("INSERT INTO {blocks} (module, delta, theme, status, weight, region, pages) VALUES ('%s', '%s', '%s', %d, %d, '%s', '%s')", 'system', '0', 'garland', 1, 10, 'footer', '');
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  db_query("INSERT INTO {node_access} (nid, gid, realm, grant_view, grant_update, grant_delete) VALUES (%d, %d, '%s', %d, %d, %d)", 0, 0, 'all', 1, 0, 0);
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  // Add input formats.
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  db_query("INSERT INTO {filter_formats} (name, roles, cache) VALUES ('%s', '%s', %d)", 'Filtered HTML', ',1,2,', 1);
  db_query("INSERT INTO {filter_formats} (name, roles, cache) VALUES ('%s', '%s', %d)", 'Full HTML', '', 1);
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  // Enable filters for each input format.

  // Filtered HTML:
  // URL filter.
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  db_query("INSERT INTO {filters} (format, module, delta, weight) VALUES (%d, '%s', %d, %d)", 1, 'filter', 2, 0);
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  // HTML filter.
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  db_query("INSERT INTO {filters} (format, module, delta, weight) VALUES (%d, '%s', %d, %d)", 1, 'filter', 0, 1);
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  // Line break filter.
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  db_query("INSERT INTO {filters} (format, module, delta, weight) VALUES (%d, '%s', %d, %d)", 1, 'filter', 1, 2);
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  // HTML corrector filter.
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  db_query("INSERT INTO {filters} (format, module, delta, weight) VALUES (%d, '%s', %d, %d)", 1, 'filter', 3, 10);
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  // Full HTML:
  // URL filter.
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  db_query("INSERT INTO {filters} (format, module, delta, weight) VALUES (%d, '%s', %d, %d)", 2, 'filter', 2, 0);
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  // Line break filter.
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  db_query("INSERT INTO {filters} (format, module, delta, weight) VALUES (%d, '%s', %d, %d)", 2, 'filter', 1, 1);
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  // HTML corrector filter.
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  db_query("INSERT INTO {filters} (format, module, delta, weight) VALUES (%d, '%s', %d, %d)", 2, 'filter', 3, 10);
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  db_query("INSERT INTO {variable} (name, value) VALUES ('%s','%s')", 'filter_html_1', 'i:1;');
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  db_query("INSERT INTO {variable} (name, value) VALUES ('%s', '%s')", 'node_options_forum', 'a:1:{i:0;s:6:"status";}');
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}

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/**
 * Implementation of hook_schema().
 */
function system_schema() {
  // NOTE: {variable} needs to be created before all other tables, as
  // some database drivers, e.g. Oracle and DB2, will require variable_get()
  // and variable_set() for overcoming some database specific limitations.
  $schema['variable'] = array(
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    'description' => t('Named variable/value pairs created by Drupal core or any other module or theme. All variables are cached in memory at the start of every Drupal request so developers should not be careless about what is stored here.'),
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    'fields' => array(
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      'name' => array(
        'description' => t('The name of the variable.'),
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => ''),
      'value' => array(
        'description' => t('The value of the variable.'),
        'type' => 'text',
        'not null' => TRUE,
        'size' => 'big'),
      ),
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    'primary key' => array('name'),
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    );
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  $schema['actions'] = array(
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    'description' => t('Stores action information.'),
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    'fields' => array(
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      'aid' => array(
        'description' => t('Primary Key: Unique actions ID.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0'),
      'type' => array(
        'description' => t('The object that that action acts on (node, user, comment, system or custom types.)'),
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
        'default' => ''),
      'callback' => array(
        'description' => t('The callback function that executes when the action runs.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'parameters' => array(
        'description' => t('Parameters to be passed to the callback function.'),
        'type' => 'text',
        'not null' => TRUE,
        'size' => 'big'),
      'description' => array(
        'description' => t('Description of the action.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0'),
      ),
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    'primary key' => array('aid'),
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    );
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  $schema['actions_aid'] = array(
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    'description' => t('Stores action IDs for non-default actions.'),
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    'fields' => array(
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      'aid' => array(
        'description' => t('Primary Key: Unique actions ID.'),
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE),
      ),
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    'primary key' => array('aid'),
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    );
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  $schema['batch'] = array(
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    'description' => t('Stores details about batches (processes that run in multiple HTTP requests).'),
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    'fields' => array(
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      'bid' => array(
        'description' => t('Primary Key: Unique batch ID.'),
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE),
      'token' => array(
        'description' => t("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."),
        'type' => 'varchar',
        'length' => 64,
        'not null' => TRUE),
      'timestamp' => array(
        'description' => t('A Unix timestamp indicating when this batch was submitted for processing. Stale batches are purged at cron time.'),
        'type' => 'int',
        'not null' => TRUE),
      'batch' => array(
        'description' => t('A serialized array containing the processing data for the batch.'),
        'type' => 'text',
        'not null' => FALSE,
        'size' => 'big')
      ),
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    'primary key' => array('bid'),
    'indexes' => array('token' => array('token')),
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    );
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  $schema['cache'] = array(
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    'description' => t('Generic cache table for caching things not separated out into their own tables. Contributed modules may also use this to store cached items.'),
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    'fields' => array(
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494
495
      'cid' => array(
        'description' => t('Primary Key: Unique cache ID.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'data' => array(
        'description' => t('A collection of data to cache.'),
        'type' => 'blob',
        'not null' => FALSE,
        'size' => 'big'),
      'expire' => array(
        'description' => t('A Unix timestamp indicating when the cache entry should expire, or 0 for never.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'created' => array(
        'description' => t('A Unix timestamp indicating when the cache entry was created.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'headers' => array(
        'description' => t('Any custom HTTP headers to be added to cached data.'),
        'type' => 'text',
        'not null' => FALSE),
      'serialized' => array(
        'description' => t('A flag to indicate whether content is serialized (1) or not (0).'),
        'type' => 'int',
        'size' => 'small',
        'not null' => TRUE,
        'default' => 0)
      ),
496
497
    'indexes' => array('expire' => array('expire')),
    'primary key' => array('cid'),
498
    );
499
500

  $schema['cache_form'] = $schema['cache'];
501
  $schema['cache_form']['description'] = t('Cache table for the form system to store recently built forms and their storage data, to be used in subsequent page requests.');
502
  $schema['cache_page'] = $schema['cache'];
503
  $schema['cache_page']['description'] = t('Cache table used to store compressed pages for anonymous users, if page caching is enabled.');
504
  $schema['cache_menu'] = $schema['cache'];
505
  $schema['cache_menu']['description'] = t('Cache table for the menu system to store router information as well as generated link trees for various menu/page/user combinations.');
506
507

  $schema['files'] = array(
508
    'description' => t('Stores information for uploaded files.'),
509
    'fields' => array(
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
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534
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540
541
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545
546
547
548
549
550
551
552
553
554
555
556
      'fid' => array(
        'description' => t('Primary Key: Unique files ID.'),
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE),
      'uid' => array(
        'description' => t('The {users}.uid of the user who is associated with the file.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'filename' => array(
        'description' => t('Name of the file.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'filepath' => array(
        'description' => t('Path of the file relative to Drupal root.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'filemime' => array(
        'description' => t('The file MIME type.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'filesize' => array(
        'description' => t('The size of the file in bytes.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'status' => array(
        'description' => t('A flag indicating whether file is temporary (1) or permanent (0).'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'timestamp' => array(
        'description' => t('UNIX timestamp for when the file was added.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      ),
557
    'indexes' => array(
558
559
      'uid' => array('uid'),
      'status' => array('status'),
560
      'timestamp' => array('timestamp'),
561
      ),
562
    'primary key' => array('fid'),
563
    );
564
565

  $schema['flood'] = array(
566
    'description' => t('Flood controls the threshold of events, such as the number of contact attempts.'),
567
    'fields' => array(
568
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      'fid' => array(
        'description' => t('Unique flood event ID.'),
        'type' => 'serial',
        'not null' => TRUE),
      'event' => array(
        'description' => t('Name of event (e.g. contact).'),
        'type' => 'varchar',
        'length' => 64,
        'not null' => TRUE,
        'default' => ''),
      'hostname' => array(
        'description' => t('Hostname of the visitor.'),
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => ''),
      'timestamp' => array(
        'description' => t('Timestamp of the event.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0)
      ),
590
    'primary key' => array('fid'),
591
592
593
    'indexes' => array(
      'allow' => array('event', 'hostname', 'timestamp'),
    ),
594
    );
595
596

  $schema['history'] = array(
597
    'description' => t('A record of which {users} have read which {node}s.'),
598
    'fields' => array(
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
      'uid' => array(
        'description' => t('The {users}.uid that read the {node} nid.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'nid' => array(
        'description' => t('The {node}.nid that was read.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'timestamp' => array(
        'description' => t('The Unix timestamp at which the read occurred.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0)
      ),
615
    'primary key' => array('uid', 'nid'),
616
617
618
    'indexes' => array(
      'nid' => array('nid'),
    ),
619
    );
620
  $schema['menu_router'] = array(
621
    'description' => t('Maps paths to various callbacks (access, page and title)'),
622
    'fields' => array(
623
624
625
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628
629
630
631
632
633
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635
636
637
638
639
640
641
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646
647
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649
650
651
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653
654
655
656
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671
672
673
674
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678
      'path' => array(
        'description' => t('Primary Key: the Drupal path this entry describes'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'load_functions' => array(
        'description' => t('A serialized array of function names (like node_load) to be called to load an object corresponding to a part of the current path.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'to_arg_functions' => array(
        'description' => t('A serialized array of function names (like user_current_to_arg) to be called to replace a part of the router path with another string.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'access_callback' => array(
        'description' => t('The callback which determines the access to this router path. Defaults to user_access.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'access_arguments' => array(
        'description' => t('A serialized array of arguments for the access callback.'),
        'type' => 'text',
        'not null' => FALSE),
      'page_callback' => array(
        'description' => t('The name of the function that renders the page.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'page_arguments' => array(
        'description' => t('A serialized array of arguments for the page callback.'),
        'type' => 'text',
        'not null' => FALSE),
      'fit' => array(
        'description' => t('A numeric representation of how specific the path is.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'number_parts' => array(
        'description' => t('Number of parts in this router path.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small'),
      'tab_parent' => array(
        'description' => t('Only for local tasks (tabs) - the router path of the parent page (which may also be a local task).'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'tab_root' => array(
679
        'description' => t('Router path of the closest non-tab parent page. For pages that are not local tasks, this will be the same as the path.'),
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'title' => array(
        'description' => t('The title for the current page, or the title for the tab if this is a local task.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'title_callback' => array(
        'description' => t('A function which will alter the title. Defaults to t()'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'title_arguments' => array(
697
        'description' => t('A serialized array of arguments for the title callback. If empty, the title will be used as the sole argument for the title callback.'),
698
699
700
701
702
703
704
705
706
707
708
709
710
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712
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730
731
732
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'type' => array(
        'description' => t('Numeric representation of the type of the menu item, like MENU_LOCAL_TASK.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'block_callback' => array(
        'description' => t('Name of a function used to render the block on the system administration page for this item.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'description' => array(
        'description' => t('A description of this item.'),
        'type' => 'text',
        'not null' => TRUE),
      'position' => array(
        'description' => t('The position of the block (left or right) on the system administration page for this item.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'weight' => array(
        'description' => t('Weight of the element. Lighter weights are higher up, heavier weights go down.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'file' => array(
        'description' => t('The file to include for this element, usually the page callback function lives in this file.'),
        'type' => 'text',
        'size' => 'medium')
      ),
733
    'indexes' => array(
734
      'fit' => array('fit'),
735
      'tab_parent' => array('tab_parent')
736
      ),
737
    'primary key' => array('path'),
738
    );
739
740

  $schema['menu_links'] = array(
741
    'description' => t('Contains the individual links within a menu.'),
742
    'fields' => array(
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
     'menu_name' => array(
        'description' => t("The menu name. All links with the same menu name (such as 'navigation') are part of the same menu."),
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
        'default' => ''),
      'mlid' => array(
        'description' => t('The menu link ID (mlid) is the integer primary key.'),
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE),
      'plid' => array(
        'description' => t('The parent link ID (plid) is the mlid of the link above in the hierarchy, or zero if the link is at the top level in its menu.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'link_path' => array(
761
        'description' => t('The Drupal path or external path this link points to.'),
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'router_path' => array(
        'description' => t('For links corresponding to a Drupal path (external = 0), this connects the link to a {menu_router}.path for joins.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'link_title' => array(
      'description' => t('The text displayed for the link, which may be modified by a title callback stored in {menu_router}.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'options' => array(
        'description' => t('A serialized array of options to be passed to the url() or l() function, such as a query string or HTML attributes.'),
        'type' => 'text',
        'not null' => FALSE),
      'module' => array(
        'description' => t('The name of the module that generated this link.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => 'system'),
      'hidden' => array(
        'description' => t('A flag for whether the link should be rendered in menus. (1 = a disabled menu item that may be shown on admin screens, -1 = a menu callback, 0 = a normal, visible link)'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small'),
      'external' => array(
        'description' => t('A flag to indicate if the link points to a full URL starting with a protocol, like http:// (1 = external, 0 = internal).'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small'),
      'has_children' => array(
        'description' => t('Flag indicating whether any links have this link as a parent (1 = children exist, 0 = no children).'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small'),
      'expanded' => array(
        'description' => t('Flag for whether this link should be rendered as expanded in menus - expanded links always have their child links displayed, instead of only when the link is in the active trail (1 = expanded, 0 = not expanded)'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small'),
      'weight' => array(
        'description' => t('Link weight among links in the same menu at the same depth.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'depth' => array(
        'description' => t('The depth relative to the top level. A link with plid == 0 will have depth == 1.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small'),
      'customized' => array(
        'description' => t('A flag to indicate that the user has manually created or edited the link (1 = customized, 0 = not customized).'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small'),
      'p1' => array(
830
        'description' => t('The first mlid in the materialized path. If N = depth, then pN must equal the mlid. If depth > 1 then p(N-1) must equal the plid. All pX where X > depth must equal zero. The columns p1 .. p9 are also called the parents.'),
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'p2' => array(
        'description' => t('The second mlid in the materialized path. See p1.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'p3' => array(
        'description' => t('The third mlid in the materialized path. See p1.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'p4' => array(
        'description' => t('The fourth mlid in the materialized path. See p1.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'p5' => array(
        'description' => t('The fifth mlid in the materialized path. See p1.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'p6' => array(
        'description' => t('The sixth mlid in the materialized path. See p1.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'p7' => array(
        'description' => t('The seventh mlid in the materialized path. See p1.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'p8' => array(
        'description' => t('The eighth mlid in the materialized path. See p1.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'p9' => array(
        'description' => t('The ninth mlid in the materialized path. See p1.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0),
      'updated' => array(
        'description' => t('Flag that indicates that this link was generated during the update from Drupal 5.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small'),
      ),
890
    'indexes' => array(
891
892
893
894
895
896
897
      'path_menu' => array(array('link_path', 128), 'menu_name'),
      'menu_plid_expand_child' => array(
        'menu_name', 'plid', 'expanded', 'has_children'),
      'menu_parents' => array(
        'menu_name', 'p1', 'p2', 'p3', 'p4', 'p5', 'p6', 'p7', 'p8', 'p9'),
      'router_path' => array(array('router_path', 128)),
      ),
898
    'primary key' => array('mlid'),
899
    );
900
901

  $schema['sessions'] = array(
902
    'description' => t("Drupal's session handlers read and write into the sessions table. Each record represents a user session, either anonymous or authenticated."),
903
    'fields' => array(
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
      'uid' => array(
        'description' => t('The {users}.uid corresponding to a session, or 0 for anonymous user.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE),
      'sid' => array(
        'description' => t("Primary key: A session ID. The value is generated by PHP's Session API."),
        'type' => 'varchar',
        'length' => 64,
        'not null' => TRUE,
        'default' => ''),
      'hostname' => array(
        'description' => t('The IP address that last used this session ID (sid).'),
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => ''),
      'timestamp' => array(
        'description' => t('The Unix timestamp when this session last requested a page. Old records are purged by PHP automatically.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'cache' => array(
        'description' => t("The time of this user's last post. This is used when the site has specified a minimum_cache_lifetime. See cache_get()."),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'session' => array(
932
        'description' => t('The serialized contents of $_SESSION, an array of name/value pairs that persists across page requests by this session ID. Drupal loads $_SESSION from here at the start of each request and saves it at the end.'),
933
934
935
936
        'type' => 'text',
        'not null' => FALSE,
        'size' => 'big')
      ),
937
938
939
    'primary key' => array('sid'),
    'indexes' => array(
      'timestamp' => array('timestamp'),
940
941
942
      'uid' => array('uid')
      ),
    );
943
944

  $schema['system'] = array(
945
    'description' => t("A list of all modules, themes, and theme engines that are or have been installed in Drupal's file system."),
946
    'fields' => array(
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
      'filename' => array(
        'description' => t('The path of the primary file for this item, relative to the Drupal root; e.g. modules/node/node.module.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'name' => array(
        'description' => t('The name of the item; e.g. node.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'type' => array(
        'description' => t('The type of the item, either module, theme, or theme_engine.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'owner' => array(
        'description' => t("A theme's 'parent'. Can be either a theme or an engine."),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => ''),
      'status' => array(
        'description' => t('Boolean indicating whether or not this item is enabled.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'throttle' => array(
        'description' => t('Boolean indicating whether this item is disabled when the throttle.module disables throttlable items.'),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny'),
      'bootstrap' => array(
        'description' => t("Boolean indicating whether this module is loaded during Drupal's early bootstrapping phase (e.g. even before the page cache is consulted)."),
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'schema_version' => array(
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        'description' => t("The module's database schema version number. -1 if the module is not installed (its tables do not exist); 0 or the largest N of the module's hook_update_N() function that has either been run or existed when the module was first installed."),
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        'type' => 'int',
        'not null' => TRUE,
        'default' => -1,
        'size' => 'small'),
      'weight' => array(
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        'description' => t("The order in which this module's hooks should be invoked relative to other modules. Equal-weighted modules are ordered by name."),
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        'type' => 'int',
        'not null' => TRUE,
        'default' => 0),
      'info' => array(
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        'description' => t("A serialized array containing information from the module's .info file; keys can include name, description, package, version, core, dependencies, dependents, and php."),
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        'type' => 'text',
        'not null' => FALSE)
      ),
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    'primary key' => array('filename'),
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    'indexes' =>
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      array(
        'modules' => array(array('type', 12), 'status', 'weight', 'filename'),
        'bootstrap' => array(array('type', 12), 'status', 'bootstrap', 'weight', 'filename'),
      ),
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    );
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  $schema['url_alias'] = array(
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    'description' => t('A list of URL aliases for Drupal paths; a user may visit either the source or destination path.'),
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    'fields' => array(
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      'pid' => array(
        'description' => t('A unique path alias identifier.'),
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE),
      'src' => array(
        'description' => t('The Drupal path this alias is for; e.g. node/12.'),
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => ''),
      'dst' => array(
        'description' => t('The alias for this path; e.g. title-of-the-story.'),
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => ''),
      'language' => array(
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        'description' => t('The language this alias is for; if blank, the alias will be used for unknown languages. Each Drupal path can have an alias for each supported language.'),
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        'type' => 'varchar',
        'length' => 12,
        'not null' => TRUE,
        'default' => '')
      ),
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    'unique keys' => array('dst_language' => array('dst', 'language')),
    'primary key' => array('pid'),
    'indexes' => array('src' => array('src')),
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    );
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  return $schema;
}

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// Updates for core.
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/**
 * @defgroup updates-4.7.x-extra Extra system updates for 4.7.x
 * @{
 */
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function system_update_last_removed() {
  return 179;
}
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function system_update_180() {
  $ret = array();

  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql("ALTER TABLE {node} DROP PRIMARY KEY");
      $ret[] = update_sql("ALTER TABLE {node} ADD PRIMARY KEY (nid, vid)");
      $ret[] = update_sql("ALTER TABLE {node} ADD UNIQUE (vid)");
      $ret[] = update_sql("ALTER TABLE {node} ADD INDEX (nid)");

      $ret[] = update_sql("ALTER TABLE {node_counter} CHANGE nid nid INT(10) NOT NULL DEFAULT '0'");
      break;
    case 'pgsql':
      $ret[] = update_sql("ALTER TABLE {node} DROP CONSTRAINT {node}_pkey"); // Change PK
      $ret[] = update_sql("ALTER TABLE {node} ADD PRIMARY KEY (nid, vid)");
      $ret[] = update_sql('DROP INDEX {node}_vid_idx'); // Change normal index to UNIQUE index
      $ret[] = update_sql('CREATE UNIQUE INDEX {node}_vid_idx ON {node}(vid)');
      $ret[] = update_sql('CREATE INDEX {node}_nid_idx ON {node}(nid)'); // Add index on nid
      break;
  }

  return $ret;
}

function system_update_181() {
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql("ALTER TABLE {profile_fields} ADD autocomplete TINYINT(1) NOT NULL AFTER visibility ;");
      break;
    case 'pgsql':
      db_add_column($ret, 'profile_fields', 'autocomplete', 'smallint', array('not null' => TRUE, 'default' => 0));
      break;
  }
  return $ret;
}

/**
 * The lid field in pgSQL should not be UNIQUE, but an INDEX.
 */
function system_update_182() {
  $ret = array();

  if ($GLOBALS['db_type'] == 'pgsql') {
    $ret[] = update_sql('ALTER TABLE {locales_target} DROP CONSTRAINT {locales_target}_lid_key');
    $ret[] = update_sql('CREATE INDEX {locales_target}_lid_idx ON {locales_target} (lid)');
  }

  return $ret;
}

/**
 * Cid matching by MySQL should be case-sensitive.
 */
function system_update_183() {
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql("ALTER TABLE {cache} CHANGE cid cid varchar(255) BINARY NOT NULL default ''");
      break;
  }
  return $ret;
}

function system_update_184() {
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql("ALTER TABLE {access} CHANGE aid aid int(10) NOT NULL AUTO_INCREMENT ");
      $ret[] = update_sql("ALTER TABLE {boxes} CHANGE bid bid int NOT NULL AUTO_INCREMENT ");
      break;
    case 'pgsql':
       // No database update required for PostgreSQL because it already uses big SERIAL numbers.
  }

  return $ret;
}

/**
 * @} End of "defgroup updates-4.7-extra"
 */

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/**
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 * @defgroup updates-4.7-to-5.0 System updates from 4.7 to 5.0
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 * @{
 */

function system_update_1000() {
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  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
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    $ret[] = update_sql("CREATE TABLE {blocks_roles} (
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      module varchar(64) NOT NULL,
      delta varchar(32) NOT NULL,
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      rid int unsigned NOT NULL,
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      PRIMARY KEY (module, delta, rid)
      ) /*!40100 DEFAULT CHARACTER SET utf8 */;");
    break;

    case 'pgsql':
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    $ret[] = update_sql("CREATE TABLE {blocks_roles} (
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      module varchar(64) NOT NULL,
      delta varchar(32) NOT NULL,
      rid integer NOT NULL,
      PRIMARY KEY (module, delta, rid)
      );");
    break;

  }
  return $ret;
}
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function system_update_1001() {
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  // change DB schema for better poll support
  $ret = array();

  switch ($GLOBALS['db_type']) {
    case 'mysqli':
    case 'mysql':
      // alter poll_votes table
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      $ret[] = update_sql("ALTER TABLE {poll_votes} ADD COLUMN chorder int NOT NULL default -1 AFTER uid");
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      break;

    case 'pgsql':
      db_add_column($ret, 'poll_votes', 'chorder', 'int', array('not null' => TRUE, 'default' => "'-1'"));
      break;
  }

  return $ret;
}

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function system_update_1002() {
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  // Make the forum's vocabulary the highest in list, if present
  $ret = array();

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  if ($vid = (int) variable_get('forum_nav_vocabulary', 0)) {
    $ret[] = update_sql('UPDATE {vocabulary} SET weight = -10 WHERE vid = '. $vid);
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  }

  return $ret;
}

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function system_update_1003() {
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  // Make use of guid in feed items
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql("ALTER TABLE {aggregator_item} ADD guid varchar(255) AFTER timestamp ;");
      break;
    case 'pgsql':
      db_add_column($ret, 'aggregator_item', 'guid', 'varchar(255)');
      break;
  }
  return $ret;
}


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function system_update_1004() {
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  // Increase the size of bid in boxes and aid in access
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
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    $ret[] = update_sql("ALTER TABLE {access} CHANGE `aid` `aid` int  NOT NULL AUTO_INCREMENT ");
    $ret[] = update_sql("ALTER TABLE {boxes} CHANGE `bid` `bid` int NOT NULL AUTO_INCREMENT ");
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      break;
    case 'pgsql':
      // No database update required for PostgreSQL because it already uses big SERIAL numbers.
      break;
  }
  return $ret;
}
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function system_update_1005() {
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  // Add ability to create dynamic node types like the CCK module
  $ret = array();

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  // The node_type table may already exist for anyone who ever used CCK in 4.7,
  // even if CCK is no longer installed. We need to make sure any previously
  // created table gets renamed before we create the new node_type table in
  // order to ensure that the new table gets created without errors.
  // TODO: This check should be removed for Drupal 6.
  if (db_table_exists('node_type')) {
    switch ($GLOBALS['db_type']) {
      case 'mysql':
      case 'mysqli':
        $ret[] = update_sql('RENAME TABLE {node_type} TO {node_type_content}');
        break;

      case 'pgsql':
        $ret[] = update_sql('ALTER TABLE {node_type} RENAME TO {node_type_content}');
        break;
    }
  }

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  switch ($GLOBALS['db_type']) {
    case 'mysqli':
    case 'mysql':
      // Create node_type table
      $ret[] = update_sql("CREATE TABLE {node_type} (
        type varchar(32) NOT NULL,
        name varchar(255) NOT NULL,
        module varchar(255) NOT NULL,
        description mediumtext NOT NULL,
        help mediumtext NOT NULL,
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        has_title tinyint unsigned NOT NULL,
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        title_label varchar(255) NOT NULL default '',
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        has_body tinyint unsigned NOT NULL,
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        body_label varchar(255) NOT NULL default '',
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        min_word_count smallint unsigned NOT NULL,
        custom tinyint NOT NULL DEFAULT '0',
        modified tinyint NOT NULL DEFAULT '0',
        locked tinyint NOT NULL DEFAULT '0',
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        orig_type varchar(255) NOT NULL default '',
        PRIMARY KEY (type)
        ) /*!40100 DEFAULT CHARACTER SET utf8 */;");
      break;

    case 'pgsql':
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      // add new unsigned types for pgsql
      $ret[] = update_sql("CREATE DOMAIN int_unsigned integer CHECK (VALUE >= 0)");
      $ret[] = update_sql("CREATE DOMAIN smallint_unsigned smallint CHECK (VALUE >= 0)");
      $ret[] = update_sql("CREATE DOMAIN bigint_unsigned bigint CHECK (VALUE >= 0)");

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      $ret[] = update_sql("CREATE TABLE {node_type} (
        type varchar(32) NOT NULL,
        name varchar(255) NOT NULL,
        module varchar(255) NOT NULL,
        description text NOT NULL,
        help text NOT NULL,
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        title_label varchar(255) NOT NULL default '',
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        has_body smallint_unsigned NOT NULL,
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        body_label varchar(255) NOT NULL default '',
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        min_word_count smallint_unsigned NOT NULL,
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        custom smallint NOT NULL DEFAULT '0',
        modified smallint NOT NULL DEFAULT '0',
        locked smallint NOT NULL DEFAULT '0',
        orig_type varchar(255) NOT NULL default '',
        PRIMARY KEY (type)
        );");
      break;
  }

  // Insert default user-defined node types into the database.
  $types = array(
    array(
      'type' => 'page',
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      'name' => t('Page'),
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      'module' => 'node',
      'description' => t('If you want to add a static page, like a contact page or an about page, use a page.'),
      'custom' => TRUE,
      'modified' => TRUE,
      'locked' => FALSE,
    ),
    array(
      'type' => 'story',
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      'name' => t('Story'),
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      'module' => 'node',
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      'description' => t('Stories are articles in their simplest form: they have a title, a teaser and a body, but can be extended by other modules. The teaser is part of the body too. Stories may be used as a personal blog or for news articles.'),
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      'custom' => TRUE,
      'modified' => TRUE,
      'locked' => FALSE,
    )
  );

  foreach ($types as $type) {
    $type = (object) _node_type_set_defaults($type);
    node_type_save($type);
  }

  cache_clear_all();
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  include_once './'. drupal_get_path('module', 'system') .'/system.admin.inc';
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  system_modules();
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  menu_rebuild();
  node_types_rebuild();

  // Migrate old values for 'minimum_x_size' variables to the node_type table.
  $query = db_query('SELECT type FROM {node_type}');
  while ($result = db_fetch_object($query)) {
    $variable_name = 'minimum_'. $result->type .'_size';
    if ($value = db_fetch_object(db_query("SELECT value FROM {variable} WHERE name = '%s'", $variable_name))) {
      $value = (int) unserialize($value->value);
      db_query("UPDATE {node_type} SET min_word_count = %d, modified = %d WHERE type = '%s'", $value, 1, $result->type);
      variable_del($variable_name);
    }
  }

  node_types_rebuild();

  return $ret;
}
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function system_update_1006() {
  // Add a customizable title to all blocks.
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
    $ret[] = update_sql("ALTER TABLE {blocks} ADD title VARCHAR(64) NOT NULL DEFAULT ''");
      break;
    case 'pgsql':
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      db_add_column($ret, 'blocks', 'title', 'varchar(64)', array('default' => "''", 'not null' => TRUE));
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      break;
  }
  // Migrate custom block titles to new column.
  $boxes = db_query('SELECT bid, title from {boxes}');
  while ($box = db_fetch_object($boxes)) {
    db_query("UPDATE {blocks} SET title = '%s' WHERE delta = %d and module = 'block'", $box->title, $box->bid);
  }
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql('ALTER TABLE {boxes} DROP title');
      break;
    case 'pgsql':
      $ret[] = update_sql('ALTER TABLE {boxes} DROP COLUMN title');
      break;
  }
  return $ret;
}

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function system_update_1007() {
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql("ALTER TABLE {aggregator_item} ADD INDEX (fid)");
      break;
    case 'pgsql':
      $ret[] = update_sql("CREATE INDEX {aggregator_item}_fid_idx ON {aggregator_item} (fid)");
      break;
  }
  return $ret;
}

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/**
 * Performance update for queries that are related to the locale.module
 */
function system_update_1008() {
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql('ALTER TABLE {locales_source} ADD KEY source (source(30))');
      break;
    case 'pgsql':
      $ret[] = update_sql("CREATE INDEX {locales_source}_source_idx on {locales_source} (source)");
  }

  return $ret;
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}

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function system_update_1010() {
  $ret = array();

  // Disable urlfilter.module, if it exists.
  if (module_exists('urlfilter')) {
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    module_disable(array('urlfilter'));
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    $ret[] = update_sql("UPDATE {filter_formats} SET module = 'filter', delta = 3 WHERE module = 'urlfilter'");
    $ret[] = t('URL Filter module was disabled; this functionality has now been added to core.');
  }

  return $ret;
}

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function system_update_1011() {
  $ret = array();
  $ret[] = update_sql('UPDATE {menu} SET mid = 2 WHERE mid = 0');
  cache_clear_all();
  return $ret;
}

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function system_update_1012() {
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql("ALTER TABLE {file_revisions} ADD INDEX(vid)");
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      $ret[] = update_sql("ALTER TABLE {files} ADD INDEX(nid)");
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      break;
    case 'pgsql':
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      $ret[] = update_sql('CREATE INDEX {file_revisions}_vid_idx ON {file_revisions} (vid)');
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      $ret[] = update_sql('CREATE INDEX {files}_nid_idx ON {files} (nid)');
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      break;
  }
  return $ret;
}

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function system_update_1013() {
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
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      $ret[] = update_sql("ALTER TABLE {sessions} CHANGE COLUMN sid sid varchar(64) NOT NULL default ''");
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      break;
    case 'pgsql':
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      db_change_column($ret, 'sessions', 'sid', 'sid', 'varchar(64)',  array('not null' => TRUE, 'default' => "''"));
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      break;
  }
  return $ret;
}

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function system_update_1014() {
  variable_del('cron_busy');
  return array();
}

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/**
 * Add an index on watchdog type.
 */
function system_update_1015() {
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':
      $ret[] = update_sql('ALTER TABLE {watchdog} ADD INDEX (type)');
      break;
    case 'pgsql':
      $ret[] = update_sql('CREATE INDEX {watchdog}_type_idx ON {watchdog}(type)');
      break;
  }
  return $ret;
}

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/**
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 * Allow for longer URL encoded (%NN) UTF-8 characters in the location field of watchdog table.
 */
function system_update_1016() {
  $ret = array();
  switch ($GLOBALS['db_type']) {
    case 'mysql':
    case 'mysqli':