system.module

<?php
// $Id$

/**
 * @file
 * Configuration system that lets administrators modify the workings of the site.
 */

/**
 * Maximum age of temporary files in seconds.
 */
define('DRUPAL_MAXIMUM_TEMP_FILE_AGE', 21600);

/**
 * Default interval for automatic cron executions in seconds.
 */
define('DRUPAL_CRON_DEFAULT_THRESHOLD', 10800);

/**
 * New users will be set to the default time zone at registration.
 */
define('DRUPAL_USER_TIMEZONE_DEFAULT', 0);

/**
 * New users will get an empty time zone at registration.
 */
define('DRUPAL_USER_TIMEZONE_EMPTY', 1);

/**
 * New users will select their own timezone at registration.
 */
define('DRUPAL_USER_TIMEZONE_SELECT', 2);

 /**
 * Disabled option on forms and settings
 */
define('DRUPAL_DISABLED', 0);

/**
 * Optional option on forms and settings
 */
define('DRUPAL_OPTIONAL', 1);

/**
 * Required option on forms and settings
 */
define('DRUPAL_REQUIRED', 2);

/**
 * Return only visible regions. @see system_region_list().
 */
define('REGIONS_VISIBLE', 'visible');

/**
 * Return all visible regions. @see system_region_list().
 */
define('REGIONS_ALL', 'all');

/**
 * Implements hook_help().
 */
function system_help($path, $arg) {
  global $base_url;

  switch ($path) {
    case 'admin/help#system':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('The System module is integral to the site, and provides basic but extensible functionality for use by other modules and themes. Some integral elements of Drupal are contained in and managed by the System module, including caching, enabling and disabling modules and themes, preparing and displaying the administrative page, and configuring fundamental site settings. A number of key system maintenance operations are also part of the System module. For more information, see the online handbook entry for <a href="@system">System module</a>.', array('@system' => 'http://drupal.org/handbook/modules/system')) . '</p>';
      $output .= '<h3>' . t('Uses') . '</h3>';
      $output .= '<dl>';
      $output .= '<dt>' . t('Managing modules') . '</dt>';
      $output .= '<dd>' . t('The System module allows users with the appropriate permissions to enable and disable modules on the <a href="@modules">Modules administration page</a>. Drupal comes with a number of core modules, and each module provides a discrete set of features and may be enabled or disabled depending on the needs of the site. Many additional modules contributed by members of the Drupal community are available for download at the <a href="@drupal-modules">Drupal.org module page</a>.', array('@modules' => url('admin/modules'), '@drupal-modules' => 'http://drupal.org/project/modules')) . '</dd>';
      $output .= '<dt>' . t('Managing themes') . '</dt>';
      $output .= '<dd>' . t('The System module allows users with the appropriate permissions to enable and disable themes on the <a href="@themes">Appearance administration page</a>. Themes determine the design and presentation of your site. Drupal comes packaged with several core themes, and additional contributed themes are available at the <a href="@drupal-themes">Drupal.org theme page</a>.', array('@themes' => url('admin/appearance'), '@drupal-themes' => 'http://drupal.org/project/themes')) . '</dd>';
      $output .= '<dt>' . t('Managing caching') . '</dt>';
      $output .= '<dd>' . t("The System module allows users with the appropriate permissions to manage caching on the <a href='@cache-settings'>Performance settings page</a>. Drupal has a robust caching system that allows the efficient re-use of previously-constructed web pages and web page components. Pages requested by anonymous users are stored in a compressed format; depending on your site configuration and the amount of your web traffic tied to anonymous visitors, the caching system may significantly increase the speed of your site.", array('@cache-settings' => url('admin/config/development/performance'))) . '</dd>';
      $output .= '<dt>' . t('Performing system maintenance') . '</dt>';
      $output .= '<dd>' . t('In order for the site and its modules to continue to operate well, a set of routine administrative operations must run on a regular basis. The System module manages this task by making use of a system cron job. You can verify the status of cron tasks by visiting the <a href="@status">Status report page</a>. For more information, see the online handbook entry for <a href="@handbook">configuring cron jobs</a>.', array('@status' => url('admin/reports/status'), '@handbook' => 'http://drupal.org/cron')) . '</dd>';
      $output .= '<dt>' . t('Configuring basic site settings') . '</dt>';
      $output .= '<dd>' . t('The System module also handles basic configuration options for your site, including <a href="@date-time-settings">Date and time settings</a>, <a href="@file-system">File system settings</a>, <a href="@clean-url">Clean URL support</a>, <a href="@site-info">Site name and other information</a>, and a <a href="@maintenance-mode">Maintenance mode</a> for taking your site temporarily offline.', array('@date-time-settings' => url('admin/config/regional/date-time'), '@file-system' => url('admin/config/media/file-system'), '@clean-url' => url('admin/config/search/clean-urls'), '@site-info' => url('admin/config/system/site-information'), '@maintenance-mode' => url('admin/config/development/maintenance'))) . '</dd>';
      $output .= '<dt>' . t('Configuring actions') . '</dt>';
      $output .= '<dd>' . t('Actions are individual tasks that the system can do, such as unpublishing a piece of content or banning a user. Modules, such as the <a href="@trigger-help">Trigger module</a>, can fire these actions when certain system events happen; for example, when a new post is added or when a user logs in. Modules may also provide additional actions. Visit the <a href="@actions">Actions page</a> to configure actions.', array('@trigger-help' => url('admin/help/trigger'), '@actions' => url('admin/config/system/actions'))) . '</dd>';
      $output .= '</dl>';
      return $output;
    case 'admin/by-module':
      return '<p>' . t('This page shows you all available administration tasks for each module.') . '</p>';
    case 'admin/appearance':
      $output = '<p>' . t('Set and configure the default theme for your website.  Alternative <a href="@themes">themes</a> are available.', array('@themes' => 'http://drupal.org/project/themes')) . '</p>';
      return $output;
    case 'admin/appearance/settings/' . $arg[3]:
      $reference = explode('.', $arg[3], 2);
      $theme = array_pop($reference);
      return '<p>' . t('These options control the display settings for the <code>%template</code> theme. When your site is displayed using this theme, these settings will be used. By clicking "Reset to defaults," you can choose to use the <a href="@global">global settings</a> for this theme.', array('%template' => $theme, '@global' => url('admin/appearance/settings'))) . '</p>';
    case 'admin/appearance/settings':
      return '<p>' . t('These options control the default display settings for your entire site, across all themes. Unless they have been overridden by a specific theme, these settings will be used.') . '</p>';
    case 'admin/modules':
      $output = '<p>' . t('Download additional <a href="@modules">contributed modules</a> to extend Drupal\'s functionality.', array('@modules' => 'http://drupal.org/project/modules')) . '</p>';
      if (module_exists('update')) {
        if (update_manager_access()) {
          $output .= '<p>' . t('Regularly review and install <a href="@updates">available updates</a> to maintain a secure and current site. Always run the <a href="@update-php">update script</a> each time a module is updated.', array('@update-php' => $base_url . '/update.php', '@updates' => url('admin/reports/updates'))) . '</p>';
        }
        else {
          $output .= '<p>' . t('Regularly review <a href="@updates">available updates</a> to maintain a secure and current site. Always run the <a href="@update-php">update script</a> each time a module is updated.', array('@update-php' => $base_url . '/update.php', '@updates' => url('admin/reports/updates'))) . '</p>';
        }
      }
      else {
        $output .= '<p>' . t('Regularly review available updates to maintain a secure and current site. Always run the <a href="@update-php">update script</a> each time a module is updated. Enable the Update manager module to update and install modules and themes.', array('@update-php' => $base_url . '/update.php')) . '</p>';
      }
      return $output;
    case 'admin/modules/uninstall':
      return '<p>' . t('The uninstall process removes all data related to a module. To uninstall a module, you must first disable it on the main <a href="@modules">Modules page</a>. Not all modules support this feature.', array('@modules' => url('admin/modules'))) . '</p>';
    case 'admin/structure/block/manage':
      if ($arg[4] == 'system' && $arg[5] == 'powered-by') {
        return '<p>' . t('The <em>Powered by Drupal</em> block is an optional link to the home page of the Drupal project. While there is absolutely no requirement that sites feature this link, it may be used to show support for Drupal.') . '</p>';
      }
      break;
    case 'admin/config/development/maintenance':
      global $user;
      if ($user->uid == 1) {
        return '<p>' . t('If you are upgrading to a newer version of Drupal or upgrading contributed modules or themes you may need to run !update-php.', array('!update-php' => l('update.php', 'update.php'))) . '</p>';
      }
    case 'admin/config/system/actions':
    case 'admin/config/system/actions/manage':
      $output = '';
      $output .= '<p>' . t('There are two types of actions: simple and advanced. Simple actions do not require any additional configuration, and are listed here automatically. Advanced actions need to be created and configured before they can be used, because they have options that need to be specified; for example, sending an e-mail to a specified address, or unpublishing content containing certain words. To create an advanced action, select the action from the drop-down list in the advanced action section below and click the <em>Create</em> button.') . '</p>';
      if (module_exists('trigger')) {
        $output .= '<p>' . t('You may proceed to the <a href="@url">Triggers</a> page to assign these actions to system events.', array('@url' => url('admin/structure/trigger'))) . '</p>';
      }
      return $output;
    case 'admin/config/system/actions/configure':
      return t('An advanced action offers additional configuration options which may be filled out below. Changing the <em>Description</em> field is recommended, in order to better identify the precise action taking place. This description will be displayed in modules such as the Trigger module when assigning actions to system events, so it is best if it is as descriptive as possible (for example, "Send e-mail to Moderation Team" rather than simply "Send e-mail").');
    case 'admin/config/people/ip-blocking':
      return '<p>' . t('IP addresses listed here are blocked from your site before any modules are loaded. You may add IP addresses to the list, or delete existing entries.') . '</p>';
    case 'admin/reports/status':
      return '<p>' . t("Here you can find a short overview of your site's parameters as well as any problems detected with your installation. It may be useful to copy and paste this information into support requests filed on drupal.org's support forums and project issue queues.") . '</p>';
  }
}

/**
 * Implements hook_theme().
 */
function system_theme() {
  return array_merge(drupal_common_theme(), array(
    'system_themes_page' => array(
      'variables' => array('theme_groups' => NULL),
      'file' => 'system.admin.inc',
    ),
    'system_settings_form' => array(
      'render element' => 'form',
    ),
    'confirm_form' => array(
      'render element' => 'form',
    ),
    'system_modules_fieldset' => array(
      'render element' => 'form',
      'file' => 'system.admin.inc',
    ),
    'system_modules_incompatible' => array(
      'variables' => array('message' => NULL),
      'file' => 'system.admin.inc',
    ),
    'system_modules_uninstall' => array(
      'render element' => 'form',
      'file' => 'system.admin.inc',
    ),
    'status_report' => array(
      'render element' => 'requirements',
      'file' => 'system.admin.inc',
    ),
    'admin_page' => array(
      'variables' => array('blocks' => NULL),
      'file' => 'system.admin.inc',
    ),
    'admin_block' => array(
      'variables' => array('block' => NULL),
      'file' => 'system.admin.inc',
    ),
    'admin_block_content' => array(
      'variables' => array('content' => NULL),
      'file' => 'system.admin.inc',
    ),
    'system_admin_by_module' => array(
      'variables' => array('menu_items' => NULL),
      'file' => 'system.admin.inc',
    ),
    'system_powered_by' => array(
      'variables' => array(),
    ),
    'system_compact_link' => array(
      'variables' => array(),
    ),
    'system_date_time_settings' => array(
      'render element' => 'form',
      'file' => 'system.admin.inc',
    ),
  ));
}

/**
 * Implements hook_permission().
 */
function system_permission() {
  return array(
    'administer modules' => array(
      'title' => t('Administer modules'),
    ),
    'administer site configuration' => array(
      'title' => t('Administer site configuration'),
    ),
    'administer themes' => array(
      'title' => t('Administer themes'),
    ),
    'administer software updates' => array(
      'title' => t('Run software updates'),
    ),
    'administer actions' => array(
      'title' => t('Administer actions'),
    ),
    'administer files' => array(
      'title' => t('Administer user-uploaded files'),
    ),
    'access administration pages' => array(
      'title' => t('Use the administration pages and help'),
    ),
    'access site in maintenance mode' => array(
      'title' => t('Use the site in maintenance mode'),
    ),
    'access site reports' => array(
      'title' => t('View site reports'),
    ),
    'block IP addresses' => array(
      'title' => t('Block IP addresses'),
    ),
  );
}

/**
 * Implements hook_rdf_namespaces().
 */
function system_rdf_namespaces() {
  return array(
    'admin'    => 'http://webns.net/mvcb/',
    'content'  => 'http://purl.org/rss/1.0/modules/content/',
    'dc'       => 'http://purl.org/dc/terms/',
    'foaf'     => 'http://xmlns.com/foaf/0.1/',
    'owl'      => 'http://www.w3.org/2002/07/owl#',
    'rdf'      => 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
    'rdfs'     => 'http://www.w3.org/2000/01/rdf-schema#',
    'rss'      => 'http://purl.org/rss/1.0/',
    'tags'     => 'http://www.holygoat.co.uk/owl/redwood/0.1/tags/',
    'sioc'     => 'http://rdfs.org/sioc/ns#',
    'sioct'    => 'http://rdfs.org/sioc/types#',
    'ctag'     => 'http://commontag.org/ns#',
    'skos'     => 'http://www.w3.org/2004/02/skos/core#',
    'xsd'      => 'http://www.w3.org/2001/XMLSchema#',
  );
}

/**
 * Implements hook_hook_info().
 */
function system_hook_info() {
  $hooks['token_info'] = array(
    'group' => 'tokens',
  );
  $hooks['tokens'] = array(
    'group' => 'tokens',
  );
  return $hooks;
}

/**
 * Implements hook_entity_info().
 */
function system_entity_info() {
  return array(
    'file' => array(
      'label' => t('File'),
      'base table' => 'file',
      'object keys' => array(
        'id' => 'fid',
      ),
      'static cache' => FALSE,
    ),
  );
}

/**
 * Implements hook_element_info().
 */
function system_element_info() {
  // Top level elements.
  $types['form'] = array(
    '#method' => 'post',
    '#action' => request_uri(),
    '#theme_wrappers' => array('form'),
  );
  $types['page'] = array(
    '#show_messages' => TRUE,
    '#theme' => 'page',
    '#theme_wrappers' => array('html'),
  );
  $types['list'] = array(
    '#title' => '',
    '#list_type' => 'ul',
    '#attributes' => array(),
    '#items' => array(),
  );
  // By default, we don't want AJAX commands being rendered in the context of an
  // HTML page, so we don't provide defaults for #theme or #theme_wrappers.
  // However, modules can set these properties (for example, to provide an HTML
  // debugging page that displays rather than executes AJAX commands).
  $types['ajax_commands'] = array(
    '#ajax_commands' => array(),
  );

  $types['html_tag'] = array(
    '#theme' => 'html_tag',
    '#attributes' => array(),
    '#value' => NULL,
  );

  // Input elements.
  $types['submit'] = array(
    '#input' => TRUE,
    '#name' => 'op',
    '#button_type' => 'submit',
    '#executes_submit_callback' => TRUE,
    '#process' => array('ajax_process_form'),
    '#theme_wrappers' => array('button'),
  );
  $types['button'] = array(
    '#input' => TRUE,
    '#name' => 'op',
    '#button_type' => 'submit',
    '#executes_submit_callback' => FALSE,
    '#process' => array('ajax_process_form'),
    '#theme_wrappers' => array('button'),
  );
  $types['image_button'] = array(
    '#input' => TRUE,
    '#button_type' => 'submit',
    '#executes_submit_callback' => TRUE,
    '#process' => array('ajax_process_form'),
    '#return_value' => TRUE,
    '#has_garbage_value' => TRUE,
    '#src' => NULL,
    '#theme_wrappers' => array('image_button'),
  );
  $types['textfield'] = array(
    '#input' => TRUE,
    '#size' => 60,
    '#maxlength' => 128,
    '#autocomplete_path' => FALSE,
    '#process' => array('form_process_text_format', 'ajax_process_form'),
    '#theme' => 'textfield',
    '#theme_wrappers' => array('form_element'),
  );
  $types['password'] = array(
    '#input' => TRUE,
    '#size' => 60,
    '#maxlength' => 128,
    '#process' => array('ajax_process_form'),
    '#theme' => 'password',
    '#theme_wrappers' => array('form_element'),
  );
  $types['password_confirm'] = array(
    '#input' => TRUE,
    '#process' => array('form_process_password_confirm', 'user_form_process_password_confirm'),
    '#theme_wrappers' => array('form_element'),
  );
  $types['textarea'] = array(
    '#input' => TRUE,
    '#cols' => 60,
    '#rows' => 5,
    '#resizable' => TRUE,
    '#process' => array('form_process_text_format', 'ajax_process_form'),
    '#theme' => 'textarea',
    '#theme_wrappers' => array('form_element'),
  );
  $types['radios'] = array(
    '#input' => TRUE,
    '#process' => array('form_process_radios'),
    '#theme_wrappers' => array('radios'),
    '#pre_render' => array('form_pre_render_conditional_form_element'),
  );
  $types['radio'] = array(
    '#input' => TRUE,
    '#default_value' => NULL,
    '#process' => array('ajax_process_form'),
    '#theme' => 'radio',
    '#theme_wrappers' => array('form_element'),
    '#title_display' => 'after',
  );
  $types['checkboxes'] = array(
    '#input' => TRUE,
    '#tree' => TRUE,
    '#process' => array('form_process_checkboxes'),
    '#theme_wrappers' => array('checkboxes'),
    '#pre_render' => array('form_pre_render_conditional_form_element'),
  );
  $types['checkbox'] = array(
    '#input' => TRUE,
    '#return_value' => 1,
    '#process' => array('ajax_process_form'),
    '#theme' => 'checkbox',
    '#theme_wrappers' => array('form_element'),
    '#title_display' => 'after',
  );
  $types['select'] = array(
    '#input' => TRUE,
    '#size' => 0,
    '#multiple' => FALSE,
    '#process' => array('ajax_process_form'),
    '#theme' => 'select',
    '#theme_wrappers' => array('form_element'),
  );
  $types['weight'] = array(
    '#input' => TRUE,
    '#delta' => 10,
    '#default_value' => 0,
    '#process' => array('form_process_weight', 'ajax_process_form'),
  );
  $types['date'] = array(
    '#input' => TRUE,
    '#element_validate' => array('date_validate'),
    '#process' => array('form_process_date'),
    '#theme' => 'date',
    '#theme_wrappers' => array('form_element'),
  );
  $types['file'] = array(
    '#input' => TRUE,
    '#size' => 60,
    '#theme' => 'file',
    '#theme_wrappers' => array('form_element'),
  );
  $types['tableselect'] = array(
    '#input' => TRUE,
    '#js_select' => TRUE,
    '#multiple' => TRUE,
    '#process' => array('form_process_tableselect'),
    '#options' => array(),
    '#empty' => '',
    '#theme' => 'tableselect',
  );

  // Form structure.
  $types['item'] = array(
    '#markup' => '',
    '#pre_render' => array('drupal_pre_render_markup'),
    '#theme_wrappers' => array('form_element'),
  );
  $types['hidden'] = array(
    '#input' => TRUE,
    '#process' => array('ajax_process_form'),
    '#theme' => 'hidden',
  );
  $types['value'] = array(
    '#input' => TRUE,
  );
  $types['markup'] = array(
    '#markup' => '',
    '#pre_render' => array('drupal_pre_render_markup'),
  );
  $types['link'] = array(
    '#pre_render' => array('drupal_pre_render_link', 'drupal_pre_render_markup'),
  );
  $types['fieldset'] = array(
    '#collapsible' => FALSE,
    '#collapsed' => FALSE,
    '#value' => NULL,
    '#process' => array('form_process_fieldset', 'ajax_process_form'),
    '#pre_render' => array('form_pre_render_fieldset'),
    '#theme_wrappers' => array('fieldset'),
  );
  $types['vertical_tabs'] = array(
    '#theme_wrappers' => array('vertical_tabs'),
    '#default_tab' => '',
    '#process' => array('form_process_vertical_tabs'),
  );

  $types['container'] = array(
    '#theme_wrappers' => array('container'),
    '#process' => array('form_process_container'),
  );

  $types['token'] = array(
    '#input' => TRUE,
    '#theme' => 'hidden',
  );

  return $types;
}

/**
 * Implements hook_menu().
 */
function system_menu() {
  $items['system/files'] = array(
    'title' => 'File download',
    'page callback' => 'file_download',
    'page arguments' => array('private'),
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );
  $items['system/temporary'] = array(
    'title' => 'Temporary files',
    'page callback' => 'file_download',
    'page arguments' => array('temporary'),
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );
  $items['system/ajax'] = array(
    'title' => 'AHAH callback',
    'page callback' => 'ajax_form_callback',
    'delivery callback' => 'ajax_deliver',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
    'file path' => 'includes',
    'file' => 'form.inc',
  );
  $items['system/timezone'] = array(
    'title' => 'Time zone',
    'page callback' => 'system_timezone',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['system/run-cron-check'] = array(
    'title' => 'Execute cron',
    'page callback' => 'system_run_cron_check',
    'access callback' => 'system_run_cron_check_access',
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['admin'] = array(
    'title' => 'Administer',
    'access arguments' => array('access administration pages'),
    'page callback' => 'system_main_admin_page',
    'weight' => 9,
    'menu_name' => 'management',
    'theme callback' => 'variable_get',
    'theme arguments' => array('admin_theme'),
    'file' => 'system.admin.inc',
  );
  $items['admin/compact'] = array(
    'title' => 'Compact mode',
    'page callback' => 'system_admin_compact_page',
    'access arguments' => array('access administration pages'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['admin/by-task'] = array(
    'title' => 'By task',
    'page callback' => 'system_main_admin_page',
    'access arguments' => array('access administration pages'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'file' => 'system.admin.inc',
  );
  $items['admin/by-module'] = array(
    'title' => 'By module',
    'page callback' => 'system_admin_by_module',
    'access arguments' => array('access administration pages'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 2,
    'file' => 'system.admin.inc',
  );

  // Menu items that are basically just menu blocks.
  $items['admin/structure'] = array(
    'title' => 'Structure',
    'description' => 'Control how your site looks and feels.',
    'position' => 'right',
    'weight' => -8,
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
  );
  // Appearance.
  $items['admin/appearance'] = array(
    'title' => 'Appearance',
    'description' => 'Select and configure your site theme.',
    'page callback' => 'system_themes_page',
    'access arguments' => array('administer themes'),
    'position' => 'left',
    'weight' => -6,
    'file' => 'system.admin.inc',
  );
  $items['admin/appearance/list'] = array(
    'title' => 'List',
    'description' => 'Select and configure your site theme.',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -1,
    'file' => 'system.admin.inc',
  );
  $items['admin/appearance/enable'] = array(
    'title' => 'Enable theme',
    'page callback' => 'system_theme_enable',
    'access arguments' => array('administer themes'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['admin/appearance/disable'] = array(
    'title' => 'Disable theme',
    'page callback' => 'system_theme_disable',
    'access arguments' => array('administer themes'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['admin/appearance/default'] = array(
    'title' => 'Set default theme',
    'page callback' => 'system_theme_default',
    'access arguments' => array('administer themes'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['admin/appearance/settings'] = array(
    'title' => 'Settings',
    'description' => 'Configure default and theme specific settings.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_theme_settings'),
    'access arguments' => array('administer themes'),
    'type' => MENU_LOCAL_TASK,
    'file' => 'system.admin.inc',
  );
  // Theme configuration subtabs.
  $items['admin/appearance/settings/global'] = array(
    'title' => 'Global settings',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -1,
  );

  foreach (list_themes() as $theme) {
    $items['admin/appearance/settings/' . $theme->name] = array(
      'title' => $theme->info['name'],
      'page arguments' => array('system_theme_settings', $theme->name),
      'type' => MENU_LOCAL_TASK,
      'access callback' => '_system_themes_access',
      'access arguments' => array($theme),
      'file' => 'system.admin.inc',
    );
  }

  // Modules.
  $items['admin/modules'] = array(
    'title' => 'Modules',
    'description' => 'Enable or disable add-on modules for your site.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_modules'),
    'access arguments' => array('administer modules'),
    'file' => 'system.admin.inc',
    'weight' => -2,
  );
  $items['admin/modules/list'] = array(
    'title' => 'List',
    'type' => MENU_DEFAULT_LOCAL_TASK,
  );
  $items['admin/modules/list/confirm'] = array(
    'title' => 'List',
    'access arguments' => array('administer modules'),
    'type' => MENU_CALLBACK,
  );
  $items['admin/modules/uninstall'] = array(
    'title' => 'Uninstall',
    'page arguments' => array('system_modules_uninstall'),
    'access arguments' => array('administer modules'),
    'type' => MENU_LOCAL_TASK,
    'file' => 'system.admin.inc',
  );
  $items['admin/modules/uninstall/confirm'] = array(
    'title' => 'Uninstall',
    'access arguments' => array('administer modules'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );

  // Configuration.
  $items['admin/config'] = array(
    'title' => 'Configuration',
    'page callback' => 'system_admin_config_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
  );

  // IP address blocking.
  $items['admin/config/people/ip-blocking'] = array(
    'title' => 'IP address blocking',
    'description' => 'Manage blocked IP addresses.',
    'page callback' => 'system_ip_blocking',
    'access arguments' => array('block IP addresses'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/people/ip-blocking/%'] = array(
    'title' => 'IP address blocking',
    'description' => 'Manage blocked IP addresses.',
    'page callback' => 'system_ip_blocking',
    'access arguments' => array('block IP addresses'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/people/ip-blocking/delete/%blocked_ip'] = array(
    'title' => 'Delete IP address',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_ip_blocking_delete', 5),
    'access arguments' => array('block IP addresses'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );

  // Media settings.
  $items['admin/config/media'] = array(
    'title' => 'Media',
    'description' => 'Media tools.',
    'position' => 'left',
    'weight' => 10,
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/media/file-system'] = array(
    'title' => 'File system',
    'description' => 'Tell Drupal where to store uploaded files and how they are accessed.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_file_system_settings'),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );
    $items['admin/config/media/image-toolkit'] = array(
    'title' => 'Image toolkit',
    'description' => 'Choose which image toolkit to use if you have installed optional toolkits.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_image_toolkit_settings'),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );

  // Service settings.
  $items['admin/config/services'] = array(
    'title' => 'Web services',
    'description' => 'Tools related to web services.',
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/services/rss-publishing'] = array(
    'title' => 'RSS publishing',
    'description' => 'Configure the site description, the number of items per feed and whether feeds should be titles/teasers/full-text.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_rss_feeds_settings'),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );

  // Development settings.
  $items['admin/config/development'] = array(
    'title' => 'Development',
    'description' => 'Development tools.',
    'position' => 'left',
    'weight' => 10,
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/development/maintenance'] = array(
    'title' => 'Maintenance mode',
    'description' => 'Take the site offline for maintenance or bring it back online.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_site_maintenance_mode'),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/development/performance'] = array(
    'title' => 'Performance',
    'description' => 'Enable or disable page caching for anonymous users and set CSS and JS bandwidth optimization options.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_performance_settings'),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/development/logging'] = array(
    'title' => 'Logging and errors',
    'description' => "Settings for logging and alerts modules. Various modules can route Drupal's system events to different destinations, such as syslog, database, email, etc.",
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_logging_settings'),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );

  // Regional and date settings.
  $items['admin/config/regional'] = array(
    'title' => 'Regional and language',
    'description' => 'Regional settings, localization and translation.',
    'position' => 'left',
    'weight' => -7,
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/settings'] = array(
    'title' => 'Regional settings',
    'description' => "Settings for the site's default time zone and country.",
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_regional_settings'),
    'access arguments' => array('administer site configuration'),
    'weight' => -10,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/date-time'] = array(
    'title' => 'Date and time',
    'description' => 'Configure display formats for date and time.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_date_time_settings'),
    'access arguments' => array('administer site configuration'),
    'weight' => -9,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/date-time/types'] = array(
    'title' => 'Types',
    'description' => 'Configure display formats for date and time.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_date_time_settings'),
    'access arguments' => array('administer site configuration'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -10,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/date-time/types/add'] = array(
    'title' => 'Add date type',
    'description' => 'Add new date type.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_add_date_format_type_form'),
    'access arguments' => array('administer site configuration'),
    'type' => MENU_LOCAL_ACTION,
    'weight' => -10,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/date-time/types/%/delete'] = array(
    'title' => 'Delete date type',
    'description' => 'Allow users to delete a configured date type.',
    'type' => MENU_CALLBACK,
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_delete_date_format_type_form', 5),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/date-time/formats'] = array(
    'title' => 'Formats',
    'description' => 'Configure display format strings for date and time.',
    'page callback' => 'system_date_time_formats',
    'access arguments' => array('administer site configuration'),
    'type' => MENU_LOCAL_TASK,
    'weight' => -9,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/date-time/formats/add'] = array(
    'title' => 'Add format',
    'description' => 'Allow users to add additional date formats.',
    'type' => MENU_LOCAL_ACTION,
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_configure_date_formats_form'),
    'access arguments' => array('administer site configuration'),
    'weight' => -10,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/date-time/formats/%/edit'] = array(
    'title' => 'Edit date format',
    'description' => 'Allow users to edit a configured date format.',
    'type' => MENU_CALLBACK,
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_configure_date_formats_form', 5),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/date-time/formats/%/delete'] = array(
    'title' => 'Delete date format',
    'description' => 'Allow users to delete a configured date format.',
    'type' => MENU_CALLBACK,
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_date_delete_format_form', 5),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/regional/date-time/formats/lookup'] = array(
    'title' => 'Date and time lookup',
    'type' => MENU_CALLBACK,
    'page callback' => 'system_date_time_lookup',
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );

  // Search settings.
  $items['admin/config/search'] = array(
    'title' => 'Search and metadata',
    'description' => 'Local site search, metadata and SEO.',
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/search/clean-urls'] = array(
    'title' => 'Clean URLs',
    'description' => 'Enable or disable clean URLs for your site.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_clean_url_settings'),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/search/clean-urls/check'] = array(
    'title' => 'Clean URL check',
    'page callback' => 'drupal_json_output',
    'page arguments' => array(array('status' => TRUE)),
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );

  // System settings.
  $items['admin/config/system'] = array(
    'title' => 'System',
    'description' => 'General system related configuration.',
    'position' => 'right',
    'weight' => -5,
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/system/actions'] = array(
    'title' => 'Actions',
    'description' => 'Manage the actions defined for your site.',
    'access arguments' => array('administer actions'),
    'page callback' => 'system_actions_manage',
    'file' => 'system.admin.inc',
  );
  $items['admin/config/system/actions/manage'] = array(
    'title' => 'Manage actions',
    'description' => 'Manage the actions defined for your site.',
    'page callback' => 'system_actions_manage',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -2,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/system/actions/configure'] = array(
    'title' => 'Configure an advanced action',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_actions_configure'),
    'access arguments' => array('administer actions'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/system/actions/delete/%actions'] = array(
    'title' => 'Delete action',
    'description' => 'Delete an action.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_actions_delete_form', 5),
    'access arguments' => array('administer actions'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/system/actions/orphan'] = array(
    'title' => 'Remove orphans',
    'page callback' => 'system_actions_remove_orphans',
    'access arguments' => array('administer actions'),
    'type' => MENU_CALLBACK,
    'file' => 'system.admin.inc',
  );
  $items['admin/config/system/site-information'] = array(
    'title' => 'Site information',
    'description' => 'Change basic site name, e-mail address, slogan, default front page, number of posts per page, error pages and cron.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('system_site_information_settings'),
    'access arguments' => array('administer site configuration'),
    'file' => 'system.admin.inc',
    'weight' => -10,
  );

  // Addititional categories
  $items['admin/config/user-interface'] = array(
    'title' => 'User interface',
    'description' => 'Tools that enhance the user interface.',
    'position' => 'right',
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
    'weight' => -5,
  );
  $items['admin/config/workflow'] = array(
    'title' => 'Workflow',
    'description' => 'Content workflow, editorial workflow tools.',
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',
  );
  $items['admin/config/content'] = array(
    'title' => 'Content authoring',
    'description' => 'Settings related to formatting and authoring content.',
    'position' => 'right',
    'weight' => 5,
    'page callback' => 'system_admin_menu_block_page',
    'access arguments' => array('access administration pages'),
    'file' => 'system.admin.inc',