Drupal PHP Cross Reference Content Management Systems

Source: /modules/system/system.module - 4009 lines - 140087 bytes - Summary - Text - Print

   1  <?php
   2  
   3  /**
   4   * @file
   5   * Configuration system that lets administrators modify the workings of the site.
   6   */
   7  
   8  /**
   9   * Maximum age of temporary files in seconds.
  10   */
  11  define('DRUPAL_MAXIMUM_TEMP_FILE_AGE', 21600);
  12  
  13  /**
  14   * Default interval for automatic cron executions in seconds.
  15   */
  16  define('DRUPAL_CRON_DEFAULT_THRESHOLD', 10800);
  17  
  18  /**
  19   * New users will be set to the default time zone at registration.
  20   */
  21  define('DRUPAL_USER_TIMEZONE_DEFAULT', 0);
  22  
  23  /**
  24   * New users will get an empty time zone at registration.
  25   */
  26  define('DRUPAL_USER_TIMEZONE_EMPTY', 1);
  27  
  28  /**
  29   * New users will select their own timezone at registration.
  30   */
  31  define('DRUPAL_USER_TIMEZONE_SELECT', 2);
  32  
  33   /**
  34   * Disabled option on forms and settings
  35   */
  36  define('DRUPAL_DISABLED', 0);
  37  
  38  /**
  39   * Optional option on forms and settings
  40   */
  41  define('DRUPAL_OPTIONAL', 1);
  42  
  43  /**
  44   * Required option on forms and settings
  45   */
  46  define('DRUPAL_REQUIRED', 2);
  47  
  48  /**
  49   * Maximum number of values in a weight select element.
  50   *
  51   * If the number of values is over the maximum, a text field is used instead.
  52   */
  53  define('DRUPAL_WEIGHT_SELECT_MAX', 100);
  54  
  55  /**
  56   * Return only visible regions.
  57   *
  58   * @see system_region_list()
  59   */
  60  define('REGIONS_VISIBLE', 'visible');
  61  
  62  /**
  63   * Return all regions.
  64   *
  65   * @see system_region_list()
  66   */
  67  define('REGIONS_ALL', 'all');
  68  
  69  /**
  70   * Implements hook_help().
  71   */
  72  function system_help($path, $arg) {
  73    global $base_url;
  74  
  75    switch ($path) {
  76      case 'admin/help#system':
  77        $output = '';
  78        $output .= '<h3>' . t('About') . '</h3>';
  79        $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/documentation/modules/system')) . '</p>';
  80        $output .= '<h3>' . t('Uses') . '</h3>';
  81        $output .= '<dl>';
  82        $output .= '<dt>' . t('Managing modules') . '</dt>';
  83        $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>';
  84        $output .= '<dt>' . t('Managing themes') . '</dt>';
  85        $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>';
  86        $output .= '<dt>' . t('Managing caching') . '</dt>';
  87        $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>';
  88        $output .= '<dt>' . t('Performing system maintenance') . '</dt>';
  89        $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>. You can set up cron job by visiting <a href="@cron">Cron configuration</a> page', array('@status' => url('admin/reports/status'), '@handbook' => 'http://drupal.org/cron', '@cron' => url('admin/config/system/cron'))) . '</dd>';
  90        $output .= '<dt>' . t('Configuring basic site settings') . '</dt>';
  91        $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>';
  92        $output .= '<dt>' . t('Configuring actions') . '</dt>';
  93        $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>';
  94        $output .= '</dl>';
  95        return $output;
  96      case 'admin/index':
  97        return '<p>' . t('This page shows you all available administration tasks for each module.') . '</p>';
  98      case 'admin/appearance':
  99        $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>';
 100        return $output;
 101      case 'admin/appearance/settings/' . $arg[3]:
 102        $theme_list = list_themes();
 103        $theme = $theme_list[$arg[3]];
 104        return '<p>' . t('These options control the display settings for the %name theme. When your site is displayed using this theme, these settings will be used.', array('%name' => $theme->info['name'])) . '</p>';
 105      case 'admin/appearance/settings':
 106        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>';
 107      case 'admin/modules':
 108        $output = '<p>' . t('Download additional <a href="@modules">contributed modules</a> to extend Drupal\'s functionality.', array('@modules' => 'http://drupal.org/project/modules')) . '</p>';
 109        if (module_exists('update')) {
 110          if (update_manager_access()) {
 111            $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>';
 112          }
 113          else {
 114            $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>';
 115          }
 116        }
 117        else {
 118          $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>';
 119        }
 120        return $output;
 121      case 'admin/modules/uninstall':
 122        return '<p>' . t('The uninstall process removes all data related to a module. To uninstall a module, you must first disable it on the main <a href="@modules">Modules page</a>.', array('@modules' => url('admin/modules'))) . '</p>';
 123      case 'admin/structure/block/manage':
 124        if ($arg[4] == 'system' && $arg[5] == 'powered-by') {
 125          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>';
 126        }
 127        break;
 128      case 'admin/config/development/maintenance':
 129        global $user;
 130        if ($user->uid == 1) {
 131          return '<p>' . t('If you are upgrading to a newer version of Drupal or upgrading contributed modules or themes, you may need to run the <a href="@update-php">update script</a>.', array('@update-php' => $base_url . '/update.php')) . '</p>';
 132        }
 133        break;
 134      case 'admin/config/system/actions':
 135      case 'admin/config/system/actions/manage':
 136        $output = '';
 137        $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>';
 138        if (module_exists('trigger')) {
 139          $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>';
 140        }
 141        return $output;
 142      case 'admin/config/system/actions/configure':
 143        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").');
 144      case 'admin/config/people/ip-blocking':
 145        return '<p>' . t('IP addresses listed here are blocked from your site. Blocked addresses are completely forbidden from accessing the site and instead see a brief message explaining the situation.') . '</p>';
 146      case 'admin/reports/status':
 147        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>';
 148    }
 149  }
 150  
 151  /**
 152   * Implements hook_theme().
 153   */
 154  function system_theme() {
 155    return array_merge(drupal_common_theme(), array(
 156      'system_themes_page' => array(
 157        'variables' => array('theme_groups' => NULL),
 158        'file' => 'system.admin.inc',
 159      ),
 160      'system_settings_form' => array(
 161        'render element' => 'form',
 162      ),
 163      'confirm_form' => array(
 164        'render element' => 'form',
 165      ),
 166      'system_modules_fieldset' => array(
 167        'render element' => 'form',
 168        'file' => 'system.admin.inc',
 169      ),
 170      'system_modules_incompatible' => array(
 171        'variables' => array('message' => NULL),
 172        'file' => 'system.admin.inc',
 173      ),
 174      'system_modules_uninstall' => array(
 175        'render element' => 'form',
 176        'file' => 'system.admin.inc',
 177      ),
 178      'status_report' => array(
 179        'render element' => 'requirements',
 180        'file' => 'system.admin.inc',
 181      ),
 182      'admin_page' => array(
 183        'variables' => array('blocks' => NULL),
 184        'file' => 'system.admin.inc',
 185      ),
 186      'admin_block' => array(
 187        'variables' => array('block' => NULL),
 188        'file' => 'system.admin.inc',
 189      ),
 190      'admin_block_content' => array(
 191        'variables' => array('content' => NULL),
 192        'file' => 'system.admin.inc',
 193      ),
 194      'system_admin_index' => array(
 195        'variables' => array('menu_items' => NULL),
 196        'file' => 'system.admin.inc',
 197      ),
 198      'system_powered_by' => array(
 199        'variables' => array(),
 200      ),
 201      'system_compact_link' => array(
 202        'variables' => array(),
 203      ),
 204      'system_date_time_settings' => array(
 205        'render element' => 'form',
 206        'file' => 'system.admin.inc',
 207      ),
 208    ));
 209  }
 210  
 211  /**
 212   * Implements hook_permission().
 213   */
 214  function system_permission() {
 215    return array(
 216      'administer modules' => array(
 217        'title' => t('Administer modules'),
 218      ),
 219      'administer site configuration' => array(
 220        'title' => t('Administer site configuration'),
 221        'restrict access' => TRUE,
 222      ),
 223      'administer themes' => array(
 224        'title' => t('Administer themes'),
 225      ),
 226      'administer software updates' => array(
 227        'title' => t('Administer software updates'),
 228        'restrict access' => TRUE,
 229      ),
 230      'administer actions' => array(
 231        'title' => t('Administer actions'),
 232      ),
 233      'access administration pages' => array(
 234        'title' => t('Use the administration pages and help'),
 235      ),
 236      'access site in maintenance mode' => array(
 237        'title' => t('Use the site in maintenance mode'),
 238      ),
 239      'view the administration theme' => array(
 240        'title' => t('View the administration theme'),
 241        'description' => variable_get('admin_theme') ? '' : t('This is only used when the site is configured to use a separate administration theme on the <a href="@appearance-url">Appearance</a> page.', array('@appearance-url' => url('admin/appearance'))),
 242      ),
 243      'access site reports' => array(
 244        'title' => t('View site reports'),
 245      ),
 246      'block IP addresses' => array(
 247        'title' => t('Block IP addresses'),
 248      ),
 249    );
 250  }
 251  
 252  /**
 253   * Implements hook_hook_info().
 254   */
 255  function system_hook_info() {
 256    $hooks['token_info'] = array(
 257      'group' => 'tokens',
 258    );
 259    $hooks['token_info_alter'] = array(
 260      'group' => 'tokens',
 261    );
 262    $hooks['tokens'] = array(
 263      'group' => 'tokens',
 264    );
 265    $hooks['tokens_alter'] = array(
 266      'group' => 'tokens',
 267    );
 268  
 269    return $hooks;
 270  }
 271  
 272  /**
 273   * Implements hook_entity_info().
 274   */
 275  function system_entity_info() {
 276    return array(
 277      'file' => array(
 278        'label' => t('File'),
 279        'base table' => 'file_managed',
 280        'entity keys' => array(
 281          'id' => 'fid',
 282          'label' => 'filename',
 283        ),
 284        'static cache' => FALSE,
 285      ),
 286    );
 287  }
 288  
 289  /**
 290   * Implements hook_element_info().
 291   */
 292  function system_element_info() {
 293    // Top level elements.
 294    $types['form'] = array(
 295      '#method' => 'post',
 296      '#action' => request_uri(),
 297      '#theme_wrappers' => array('form'),
 298    );
 299    $types['page'] = array(
 300      '#show_messages' => TRUE,
 301      '#theme' => 'page',
 302      '#theme_wrappers' => array('html'),
 303    );
 304    // By default, we don't want Ajax commands being rendered in the context of an
 305    // HTML page, so we don't provide defaults for #theme or #theme_wrappers.
 306    // However, modules can set these properties (for example, to provide an HTML
 307    // debugging page that displays rather than executes Ajax commands).
 308    $types['ajax'] = array(
 309      '#header' => TRUE,
 310      '#commands' => array(),
 311      '#error' => NULL,
 312    );
 313    $types['html_tag'] = array(
 314      '#theme' => 'html_tag',
 315      '#pre_render' => array('drupal_pre_render_conditional_comments'),
 316      '#attributes' => array(),
 317      '#value' => NULL,
 318    );
 319    $types['styles'] = array(
 320      '#items' => array(),
 321      '#pre_render' => array('drupal_pre_render_styles'),
 322      '#group_callback' => 'drupal_group_css',
 323      '#aggregate_callback' => 'drupal_aggregate_css',
 324    );
 325  
 326    // Input elements.
 327    $types['submit'] = array(
 328      '#input' => TRUE,
 329      '#name' => 'op',
 330      '#button_type' => 'submit',
 331      '#executes_submit_callback' => TRUE,
 332      '#limit_validation_errors' => FALSE,
 333      '#process' => array('ajax_process_form'),
 334      '#theme_wrappers' => array('button'),
 335    );
 336    $types['button'] = array(
 337      '#input' => TRUE,
 338      '#name' => 'op',
 339      '#button_type' => 'submit',
 340      '#executes_submit_callback' => FALSE,
 341      '#limit_validation_errors' => FALSE,
 342      '#process' => array('ajax_process_form'),
 343      '#theme_wrappers' => array('button'),
 344    );
 345    $types['image_button'] = array(
 346      '#input' => TRUE,
 347      '#button_type' => 'submit',
 348      '#executes_submit_callback' => TRUE,
 349      '#limit_validation_errors' => FALSE,
 350      '#process' => array('ajax_process_form'),
 351      '#return_value' => TRUE,
 352      '#has_garbage_value' => TRUE,
 353      '#src' => NULL,
 354      '#theme_wrappers' => array('image_button'),
 355    );
 356    $types['textfield'] = array(
 357      '#input' => TRUE,
 358      '#size' => 60,
 359      '#maxlength' => 128,
 360      '#autocomplete_path' => FALSE,
 361      '#process' => array('ajax_process_form'),
 362      '#theme' => 'textfield',
 363      '#theme_wrappers' => array('form_element'),
 364    );
 365    $types['machine_name'] = array(
 366      '#input' => TRUE,
 367      '#default_value' => NULL,
 368      '#required' => TRUE,
 369      '#maxlength' => 64,
 370      '#size' => 60,
 371      '#autocomplete_path' => FALSE,
 372      '#process' => array('form_process_machine_name', 'ajax_process_form'),
 373      '#element_validate' => array('form_validate_machine_name'),
 374      '#theme' => 'textfield',
 375      '#theme_wrappers' => array('form_element'),
 376    );
 377    $types['password'] = array(
 378      '#input' => TRUE,
 379      '#size' => 60,
 380      '#maxlength' => 128,
 381      '#process' => array('ajax_process_form'),
 382      '#theme' => 'password',
 383      '#theme_wrappers' => array('form_element'),
 384    );
 385    $types['password_confirm'] = array(
 386      '#input' => TRUE,
 387      '#process' => array('form_process_password_confirm', 'user_form_process_password_confirm'),
 388      '#theme_wrappers' => array('form_element'),
 389    );
 390    $types['textarea'] = array(
 391      '#input' => TRUE,
 392      '#cols' => 60,
 393      '#rows' => 5,
 394      '#resizable' => TRUE,
 395      '#process' => array('ajax_process_form'),
 396      '#theme' => 'textarea',
 397      '#theme_wrappers' => array('form_element'),
 398    );
 399    $types['radios'] = array(
 400      '#input' => TRUE,
 401      '#process' => array('form_process_radios'),
 402      '#theme_wrappers' => array('radios'),
 403      '#pre_render' => array('form_pre_render_conditional_form_element'),
 404    );
 405    $types['radio'] = array(
 406      '#input' => TRUE,
 407      '#default_value' => NULL,
 408      '#process' => array('ajax_process_form'),
 409      '#theme' => 'radio',
 410      '#theme_wrappers' => array('form_element'),
 411      '#title_display' => 'after',
 412    );
 413    $types['checkboxes'] = array(
 414      '#input' => TRUE,
 415      '#process' => array('form_process_checkboxes'),
 416      '#theme_wrappers' => array('checkboxes'),
 417      '#pre_render' => array('form_pre_render_conditional_form_element'),
 418    );
 419    $types['checkbox'] = array(
 420      '#input' => TRUE,
 421      '#return_value' => 1,
 422      '#theme' => 'checkbox',
 423      '#process' => array('form_process_checkbox', 'ajax_process_form'),
 424      '#theme_wrappers' => array('form_element'),
 425      '#title_display' => 'after',
 426    );
 427    $types['select'] = array(
 428      '#input' => TRUE,
 429      '#multiple' => FALSE,
 430      '#process' => array('form_process_select', 'ajax_process_form'),
 431      '#theme' => 'select',
 432      '#theme_wrappers' => array('form_element'),
 433    );
 434    $types['weight'] = array(
 435      '#input' => TRUE,
 436      '#delta' => 10,
 437      '#default_value' => 0,
 438      '#process' => array('form_process_weight', 'ajax_process_form'),
 439    );
 440    $types['date'] = array(
 441      '#input' => TRUE,
 442      '#element_validate' => array('date_validate'),
 443      '#process' => array('form_process_date'),
 444      '#theme' => 'date',
 445      '#theme_wrappers' => array('form_element'),
 446    );
 447    $types['file'] = array(
 448      '#input' => TRUE,
 449      '#size' => 60,
 450      '#theme' => 'file',
 451      '#theme_wrappers' => array('form_element'),
 452    );
 453    $types['tableselect'] = array(
 454      '#input' => TRUE,
 455      '#js_select' => TRUE,
 456      '#multiple' => TRUE,
 457      '#process' => array('form_process_tableselect'),
 458      '#options' => array(),
 459      '#empty' => '',
 460      '#theme' => 'tableselect',
 461    );
 462  
 463    // Form structure.
 464    $types['item'] = array(
 465      '#markup' => '',
 466      '#pre_render' => array('drupal_pre_render_markup'),
 467      '#theme_wrappers' => array('form_element'),
 468    );
 469    $types['hidden'] = array(
 470      '#input' => TRUE,
 471      '#process' => array('ajax_process_form'),
 472      '#theme' => 'hidden',
 473    );
 474    $types['value'] = array(
 475      '#input' => TRUE,
 476    );
 477    $types['markup'] = array(
 478      '#markup' => '',
 479      '#pre_render' => array('drupal_pre_render_markup'),
 480    );
 481    $types['link'] = array(
 482      '#pre_render' => array('drupal_pre_render_link', 'drupal_pre_render_markup'),
 483    );
 484    $types['fieldset'] = array(
 485      '#collapsible' => FALSE,
 486      '#collapsed' => FALSE,
 487      '#value' => NULL,
 488      '#process' => array('form_process_fieldset', 'ajax_process_form'),
 489      '#pre_render' => array('form_pre_render_fieldset'),
 490      '#theme_wrappers' => array('fieldset'),
 491    );
 492    $types['vertical_tabs'] = array(
 493      '#theme_wrappers' => array('vertical_tabs'),
 494      '#default_tab' => '',
 495      '#process' => array('form_process_vertical_tabs'),
 496    );
 497  
 498    $types['container'] = array(
 499      '#theme_wrappers' => array('container'),
 500      '#process' => array('form_process_container'),
 501    );
 502    $types['actions'] = array(
 503      '#theme_wrappers' => array('container'),
 504      '#process' => array('form_process_actions', 'form_process_container'),
 505      '#weight' => 100,
 506    );
 507  
 508    $types['token'] = array(
 509      '#input' => TRUE,
 510      '#theme' => 'hidden',
 511    );
 512  
 513    return $types;
 514  }
 515  
 516  /**
 517   * Implements hook_menu().
 518   */
 519  function system_menu() {
 520    $items['system/files'] = array(
 521      'title' => 'File download',
 522      'page callback' => 'file_download',
 523      'page arguments' => array('private'),
 524      'access callback' => TRUE,
 525      'type' => MENU_CALLBACK,
 526    );
 527    $items['system/temporary'] = array(
 528      'title' => 'Temporary files',
 529      'page callback' => 'file_download',
 530      'page arguments' => array('temporary'),
 531      'access callback' => TRUE,
 532      'type' => MENU_CALLBACK,
 533    );
 534    $items['system/ajax'] = array(
 535      'title' => 'AHAH callback',
 536      'page callback' => 'ajax_form_callback',
 537      'delivery callback' => 'ajax_deliver',
 538      'access callback' => TRUE,
 539      'theme callback' => 'ajax_base_page_theme',
 540      'type' => MENU_CALLBACK,
 541      'file path' => 'includes',
 542      'file' => 'form.inc',
 543    );
 544    $items['system/timezone'] = array(
 545      'title' => 'Time zone',
 546      'page callback' => 'system_timezone',
 547      'access callback' => TRUE,
 548      'type' => MENU_CALLBACK,
 549      'file' => 'system.admin.inc',
 550    );
 551    $items['admin'] = array(
 552      'title' => 'Administration',
 553      'access arguments' => array('access administration pages'),
 554      'page callback' => 'system_admin_menu_block_page',
 555      'weight' => 9,
 556      'menu_name' => 'management',
 557      'file' => 'system.admin.inc',
 558    );
 559    $items['admin/compact'] = array(
 560      'title' => 'Compact mode',
 561      'page callback' => 'system_admin_compact_page',
 562      'access arguments' => array('access administration pages'),
 563      'type' => MENU_CALLBACK,
 564      'file' => 'system.admin.inc',
 565    );
 566    $items['admin/tasks'] = array(
 567      'title' => 'Tasks',
 568      'type' => MENU_DEFAULT_LOCAL_TASK,
 569      'weight' => -20,
 570    );
 571    $items['admin/index'] = array(
 572      'title' => 'Index',
 573      'page callback' => 'system_admin_index',
 574      'access arguments' => array('access administration pages'),
 575      'type' => MENU_LOCAL_TASK,
 576      'weight' => -18,
 577      'file' => 'system.admin.inc',
 578    );
 579  
 580    // Menu items that are basically just menu blocks.
 581    $items['admin/structure'] = array(
 582      'title' => 'Structure',
 583      'description' => 'Administer blocks, content types, menus, etc.',
 584      'position' => 'right',
 585      'weight' => -8,
 586      'page callback' => 'system_admin_menu_block_page',
 587      'access arguments' => array('access administration pages'),
 588      'file' => 'system.admin.inc',
 589    );
 590    // Appearance.
 591    $items['admin/appearance'] = array(
 592      'title' => 'Appearance',
 593      'description' => 'Select and configure your themes.',
 594      'page callback' => 'system_themes_page',
 595      'access arguments' => array('administer themes'),
 596      'position' => 'left',
 597      'weight' => -6,
 598      'file' => 'system.admin.inc',
 599    );
 600    $items['admin/appearance/list'] = array(
 601      'title' => 'List',
 602      'description' => 'Select and configure your theme',
 603      'type' => MENU_DEFAULT_LOCAL_TASK,
 604      'weight' => -1,
 605      'file' => 'system.admin.inc',
 606    );
 607    $items['admin/appearance/enable'] = array(
 608      'title' => 'Enable theme',
 609      'page callback' => 'system_theme_enable',
 610      'access arguments' => array('administer themes'),
 611      'type' => MENU_CALLBACK,
 612      'file' => 'system.admin.inc',
 613    );
 614    $items['admin/appearance/disable'] = array(
 615      'title' => 'Disable theme',
 616      'page callback' => 'system_theme_disable',
 617      'access arguments' => array('administer themes'),
 618      'type' => MENU_CALLBACK,
 619      'file' => 'system.admin.inc',
 620    );
 621    $items['admin/appearance/default'] = array(
 622      'title' => 'Set default theme',
 623      'page callback' => 'system_theme_default',
 624      'access arguments' => array('administer themes'),
 625      'type' => MENU_CALLBACK,
 626      'file' => 'system.admin.inc',
 627    );
 628    $items['admin/appearance/settings'] = array(
 629      'title' => 'Settings',
 630      'description' => 'Configure default and theme specific settings.',
 631      'page callback' => 'drupal_get_form',
 632      'page arguments' => array('system_theme_settings'),
 633      'access arguments' => array('administer themes'),
 634      'type' => MENU_LOCAL_TASK,
 635      'file' => 'system.admin.inc',
 636      'weight' => 20,
 637    );
 638    // Theme configuration subtabs.
 639    $items['admin/appearance/settings/global'] = array(
 640      'title' => 'Global settings',
 641      'type' => MENU_DEFAULT_LOCAL_TASK,
 642      'weight' => -1,
 643    );
 644  
 645    foreach (list_themes() as $theme) {
 646      $items['admin/appearance/settings/' . $theme->name] = array(
 647        'title' => $theme->info['name'],
 648        'page arguments' => array('system_theme_settings', $theme->name),
 649        'type' => MENU_LOCAL_TASK,
 650        'access callback' => '_system_themes_access',
 651        'access arguments' => array($theme),
 652        'file' => 'system.admin.inc',
 653      );
 654    }
 655  
 656    // Modules.
 657    $items['admin/modules'] = array(
 658      'title' => 'Modules',
 659      'description' => 'Extend site functionality.',
 660      'page callback' => 'drupal_get_form',
 661      'page arguments' => array('system_modules'),
 662      'access arguments' => array('administer modules'),
 663      'file' => 'system.admin.inc',
 664      'weight' => -2,
 665    );
 666    $items['admin/modules/list'] = array(
 667      'title' => 'List',
 668      'type' => MENU_DEFAULT_LOCAL_TASK,
 669    );
 670    $items['admin/modules/list/confirm'] = array(
 671      'title' => 'List',
 672      'access arguments' => array('administer modules'),
 673      'type' => MENU_VISIBLE_IN_BREADCRUMB,
 674    );
 675    $items['admin/modules/uninstall'] = array(
 676      'title' => 'Uninstall',
 677      'page arguments' => array('system_modules_uninstall'),
 678      'access arguments' => array('administer modules'),
 679      'type' => MENU_LOCAL_TASK,
 680      'file' => 'system.admin.inc',
 681      'weight' => 20,
 682    );
 683    $items['admin/modules/uninstall/confirm'] = array(
 684      'title' => 'Uninstall',
 685      'access arguments' => array('administer modules'),
 686      'type' => MENU_VISIBLE_IN_BREADCRUMB,
 687      'file' => 'system.admin.inc',
 688    );
 689  
 690    // Configuration.
 691    $items['admin/config'] = array(
 692      'title' => 'Configuration',
 693      'description' => 'Administer settings.',
 694      'page callback' => 'system_admin_config_page',
 695      'access arguments' => array('access administration pages'),
 696      'file' => 'system.admin.inc',
 697    );
 698  
 699    // IP address blocking.
 700    $items['admin/config/people/ip-blocking'] = array(
 701      'title' => 'IP address blocking',
 702      'description' => 'Manage blocked IP addresses.',
 703      'page callback' => 'system_ip_blocking',
 704      'access arguments' => array('block IP addresses'),
 705      'file' => 'system.admin.inc',
 706      'weight' => 10,
 707    );
 708    $items['admin/config/people/ip-blocking/delete/%blocked_ip'] = array(
 709      'title' => 'Delete IP address',
 710      'page callback' => 'drupal_get_form',
 711      'page arguments' => array('system_ip_blocking_delete', 5),
 712      'access arguments' => array('block IP addresses'),
 713      'file' => 'system.admin.inc',
 714    );
 715  
 716    // Media settings.
 717    $items['admin/config/media'] = array(
 718      'title' => 'Media',
 719      'description' => 'Media tools.',
 720      'position' => 'left',
 721      'weight' => -10,
 722      'page callback' => 'system_admin_menu_block_page',
 723      'access arguments' => array('access administration pages'),
 724      'file' => 'system.admin.inc',
 725    );
 726    $items['admin/config/media/file-system'] = array(
 727      'title' => 'File system',
 728      'description' => 'Tell Drupal where to store uploaded files and how they are accessed.',
 729      'page callback' => 'drupal_get_form',
 730      'page arguments' => array('system_file_system_settings'),
 731      'access arguments' => array('administer site configuration'),
 732      'weight' => -10,
 733      'file' => 'system.admin.inc',
 734    );
 735    $items['admin/config/media/image-toolkit'] = array(
 736      'title' => 'Image toolkit',
 737      'description' => 'Choose which image toolkit to use if you have installed optional toolkits.',
 738      'page callback' => 'drupal_get_form',
 739      'page arguments' => array('system_image_toolkit_settings'),
 740      'access arguments' => array('administer site configuration'),
 741      'weight' => 20,
 742      'file' => 'system.admin.inc',
 743    );
 744  
 745    // Service settings.
 746    $items['admin/config/services'] = array(
 747      'title' => 'Web services',
 748      'description' => 'Tools related to web services.',
 749      'position' => 'right',
 750      'weight' => 0,
 751      'page callback' => 'system_admin_menu_block_page',
 752      'access arguments' => array('access administration pages'),
 753      'file' => 'system.admin.inc',
 754    );
 755    $items['admin/config/services/rss-publishing'] = array(
 756      'title' => 'RSS publishing',
 757      'description' => 'Configure the site description, the number of items per feed and whether feeds should be titles/teasers/full-text.',
 758      'page callback' => 'drupal_get_form',
 759      'page arguments' => array('system_rss_feeds_settings'),
 760      'access arguments' => array('administer site configuration'),
 761      'file' => 'system.admin.inc',
 762    );
 763  
 764    // Development settings.
 765    $items['admin/config/development'] = array(
 766      'title' => 'Development',
 767      'description' => 'Development tools.',
 768      'position' => 'right',
 769      'weight' => -10,
 770      'page callback' => 'system_admin_menu_block_page',
 771      'access arguments' => array('access administration pages'),
 772      'file' => 'system.admin.inc',
 773    );
 774    $items['admin/config/development/maintenance'] = array(
 775      'title' => 'Maintenance mode',
 776      'description' => 'Take the site offline for maintenance or bring it back online.',
 777      'page callback' => 'drupal_get_form',
 778      'page arguments' => array('system_site_maintenance_mode'),
 779      'access arguments' => array('administer site configuration'),
 780      'file' => 'system.admin.inc',
 781      'weight' => -10,
 782    );
 783    $items['admin/config/development/performance'] = array(
 784      'title' => 'Performance',
 785      'description' => 'Enable or disable page caching for anonymous users and set CSS and JS bandwidth optimization options.',
 786      'page callback' => 'drupal_get_form',
 787      'page arguments' => array('system_performance_settings'),
 788      'access arguments' => array('administer site configuration'),
 789      'file' => 'system.admin.inc',
 790      'weight' => -20,
 791    );
 792    $items['admin/config/development/logging'] = array(
 793      'title' => 'Logging and errors',
 794      'description' => "Settings for logging and alerts modules. Various modules can route Drupal's system events to different destinations, such as syslog, database, email, etc.",
 795      'page callback' => 'drupal_get_form',
 796      'page arguments' => array('system_logging_settings'),
 797      'access arguments' => array('administer site configuration'),
 798      'file' => 'system.admin.inc',
 799      'weight' => -15,
 800    );
 801  
 802    // Regional and date settings.
 803    $items['admin/config/regional'] = array(
 804      'title' => 'Regional and language',
 805      'description' => 'Regional settings, localization and translation.',
 806      'position' => 'left',
 807      'weight' => -5,
 808      'page callback' => 'system_admin_menu_block_page',
 809      'access arguments' => array('access administration pages'),
 810      'file' => 'system.admin.inc',
 811    );
 812    $items['admin/config/regional/settings'] = array(
 813      'title' => 'Regional settings',
 814      'description' => "Settings for the site's default time zone and country.",
 815      'page callback' => 'drupal_get_form',
 816      'page arguments' => array('system_regional_settings'),
 817      'access arguments' => array('administer site configuration'),
 818      'weight' => -20,
 819      'file' => 'system.admin.inc',
 820    );
 821    $items['admin/config/regional/date-time'] = array(
 822      'title' => 'Date and time',
 823      'description' => 'Configure display formats for date and time.',
 824      'page callback' => 'drupal_get_form',
 825      'page arguments' => array('system_date_time_settings'),
 826      'access arguments' => array('administer site configuration'),
 827      'weight' => -15,
 828      'file' => 'system.admin.inc',
 829    );
 830    $items['admin/config/regional/date-time/types'] = array(
 831      'title' => 'Types',
 832      'description' => 'Configure display formats for date and time.',
 833      'page callback' => 'drupal_get_form',
 834      'page arguments' => array('system_date_time_settings'),
 835      'access arguments' => array('administer site configuration'),
 836      'type' => MENU_DEFAULT_LOCAL_TASK,
 837      'weight' => -10,
 838      'file' => 'system.admin.inc',
 839    );
 840    $items['admin/config/regional/date-time/types/add'] = array(
 841      'title' => 'Add date type',
 842      'description' => 'Add new date type.',
 843      'page callback' => 'drupal_get_form',
 844      'page arguments' => array('system_add_date_format_type_form'),
 845      'access arguments' => array('administer site configuration'),
 846      'type' => MENU_LOCAL_ACTION,
 847      'weight' => -10,
 848      'file' => 'system.admin.inc',
 849    );
 850    $items['admin/config/regional/date-time/types/%/delete'] = array(
 851      'title' => 'Delete date type',
 852      'description' => 'Allow users to delete a configured date type.',
 853      'page callback' => 'drupal_get_form',
 854      'page arguments' => array('system_delete_date_format_type_form', 5),
 855      'access arguments' => array('administer site configuration'),
 856      'file' => 'system.admin.inc',
 857    );
 858    $items['admin/config/regional/date-time/formats'] = array(
 859      'title' => 'Formats',
 860      'description' => 'Configure display format strings for date and time.',
 861      'page callback' => 'system_date_time_formats',
 862      'access arguments' => array('administer site configuration'),
 863      'type' => MENU_LOCAL_TASK,
 864      'weight' => -9,
 865      'file' => 'system.admin.inc',
 866    );
 867    $items['admin/config/regional/date-time/formats/add'] = array(
 868      'title' => 'Add format',
 869      'description' => 'Allow users to add additional date formats.',
 870      'type' => MENU_LOCAL_ACTION,
 871      'page callback' => 'drupal_get_form',
 872      'page arguments' => array('system_configure_date_formats_form'),
 873      'access arguments' => array('administer site configuration'),
 874      'weight' => -10,
 875      'file' => 'system.admin.inc',
 876    );
 877    $items['admin/config/regional/date-time/formats/%/edit'] = array(
 878      'title' => 'Edit date format',
 879      'description' => 'Allow users to edit a configured date format.',
 880      'page callback' => 'drupal_get_form',
 881      'page arguments' => array('system_configure_date_formats_form', 5),
 882      'access arguments' => array('administer site configuration'),
 883      'file' => 'system.admin.inc',
 884    );
 885    $items['admin/config/regional/date-time/formats/%/delete'] = array(
 886      'title' => 'Delete date format',
 887      'description' => 'Allow users to delete a configured date format.',
 888      'page callback' => 'drupal_get_form',
 889      'page arguments' => array('system_date_delete_format_form', 5),
 890      'access arguments' => array('administer site configuration'),
 891      'file' => 'system.admin.inc',
 892    );
 893    $items['admin/config/regional/date-time/formats/lookup'] = array(
 894      'title' => 'Date and time lookup',
 895      'page callback' => 'system_date_time_lookup',
 896      'access arguments' => array('administer site configuration'),
 897      'type' => MENU_CALLBACK,
 898      'file' => 'system.admin.inc',
 899    );
 900  
 901    // Search settings.
 902    $items['admin/config/search'] = array(
 903      'title' => 'Search and metadata',
 904      'description' => 'Local site search, metadata and SEO.',
 905      'position' => 'left',
 906      'weight' => -10,
 907      'page callback' => 'system_admin_menu_block_page',
 908      'access arguments' => array('access administration pages'),
 909      'file' => 'system.admin.inc',
 910    );
 911    $items['admin/config/search/clean-urls'] = array(
 912      'title' => 'Clean URLs',
 913      'description' => 'Enable or disable clean URLs for your site.',
 914      'page callback' => 'drupal_get_form',
 915      'page arguments' => array('system_clean_url_settings'),
 916      'access arguments' => array('administer site configuration'),
 917      'file' => 'system.admin.inc',
 918      'weight' => 5,
 919    );
 920    $items['admin/config/search/clean-urls/check'] = array(
 921      'title' => 'Clean URL check',
 922      'page callback' => 'drupal_json_output',
 923      'page arguments' => array(array('status' => TRUE)),
 924      'access callback' => TRUE,
 925      'type' => MENU_CALLBACK,
 926      'file' => 'system.admin.inc',
 927    );
 928  
 929    // System settings.
 930    $items['admin/config/system'] = array(
 931      'title' => 'System',
 932      'description' => 'General system related configuration.',
 933      'position' => 'right',
 934      'weight' => -20,
 935      'page callback' => 'system_admin_menu_block_page',
 936      'access arguments' => array('access administration pages'),
 937      'file' => 'system.admin.inc',
 938    );
 939    $items['admin/config/system/actions'] = array(
 940      'title' => 'Actions',
 941      'description' => 'Manage the actions defined for your site.',
 942      'access arguments' => array('administer actions'),
 943      'page callback' => 'system_actions_manage',
 944      'file' => 'system.admin.inc',
 945    );
 946    $items['admin/config/system/actions/manage'] = array(
 947      'title' => 'Manage actions',
 948      'description' => 'Manage the actions defined for your site.',
 949      'page callback' => 'system_actions_manage',
 950      'type' => MENU_DEFAULT_LOCAL_TASK,
 951      'weight' => -2,
 952      'file' => 'system.admin.inc',
 953    );
 954    $items['admin/config/system/actions/configure'] = array(
 955      'title' => 'Configure an advanced action',
 956      'page callback' => 'drupal_get_form',
 957      'page arguments' => array('system_actions_configure'),
 958      'access arguments' => array('administer actions'),
 959      'type' => MENU_VISIBLE_IN_BREADCRUMB,
 960      'file' => 'system.admin.inc',
 961    );
 962    $items['admin/config/system/actions/delete/%actions'] = array(
 963      'title' => 'Delete action',
 964      'description' => 'Delete an action.',
 965      'page callback' => 'drupal_get_form',
 966      'page arguments' => array('system_actions_delete_form', 5),
 967      'access arguments' => array('administer actions'),
 968      'file' => 'system.admin.inc',
 969    );
 970    $items['admin/config/system/actions/orphan'] = array(
 971      'title' => 'Remove orphans',
 972      'page callback' => 'system_actions_remove_orphans',
 973      'access arguments' => array('administer actions'),
 974      'type' => MENU_CALLBACK,
 975      'file' => 'system.admin.inc',
 976    );
 977    $items['admin/config/system/site-information'] = array(
 978      'title' => 'Site information',
 979      'description' => 'Change site name, e-mail address, slogan, default front page, and number of posts per page, error pages.',
 980      'page callback' => 'drupal_get_form',
 981      'page arguments' => array('system_site_information_settings'),
 982      'access arguments' => array('administer site configuration'),
 983      'file' => 'system.admin.inc',
 984      'weight' => -20,
 985    );
 986    $items['admin/config/system/cron'] = array(
 987      'title' => 'Cron',
 988      'description' => 'Manage automatic site maintenance tasks.',
 989      'page callback' => 'drupal_get_form',
 990      'page arguments' => array('system_cron_settings'),
 991      'access arguments' => array('administer site configuration'),
 992      'file' => 'system.admin.inc',
 993      'weight' => 20,
 994    );
 995    // Additional categories
 996    $items['admin/config/user-interface'] = array(
 997      'title' => 'User interface',
 998      'description' => 'Tools that enhance the user interface.',
 999      'position' => 'right',
1000      'page callback' => 'system_admin_menu_block_page',
1001      'access arguments' => array('access administration pages'),
1002      'file' => 'system.admin.inc',
1003      'weight' => -15,
1004    );
1005    $items['admin/config/workflow'] = array(
1006      'title' => 'Workflow',
1007      'description' => 'Content workflow, editorial workflow tools.',
1008      'position' => 'right',
1009      'weight' => 5,
1010      'page callback' => 'system_admin_menu_block_page',
1011      'access arguments' => array('access administration pages'),
1012      'file' => 'system.admin.inc',
1013    );
1014    $items['admin/config/content'] = array(
1015      'title' => 'Content authoring',
1016      'description' => 'Settings related to formatting and authoring content.',
1017      'position' => 'left',
1018      'weight' => -15,
1019      'page callback' => 'system_admin_menu_block_page',
1020      'access arguments' => array('access administration pages'),
1021      'file' => 'system.admin.inc',
1022    );
1023  
1024    // Reports.
1025    $items['admin/reports'] = array(
1026      'title' => 'Reports',
1027      'description' => 'View reports, updates, and errors.',
1028      'page callback' => 'system_admin_menu_block_page',
1029      'access arguments' => array('access site reports'),
1030      'weight' => 5,
1031      'position' => 'left',
1032      'file' => 'system.admin.inc',
1033    );
1034    $items['admin/reports/status'] = array(
1035      'title' => 'Status report',
1036      'description' => "Get a status report about your site's operation and any detected problems.",
1037      'page callback' => 'system_status',
1038      'weight' => -60,
1039      'access arguments' => array('administer site configuration'),
1040      'file' => 'system.admin.inc',
1041    );
1042    $items['admin/reports/status/run-cron'] = array(
1043      'title' => 'Run cron',
1044      'page callback' => 'system_run_cron',
1045      'access arguments' => array('administer site configuration'),
1046      'type' => MENU_CALLBACK,
1047      'file' => 'system.admin.inc',
1048    );
1049    $items['admin/reports/status/php'] = array(
1050      'title' => 'PHP',
1051      'page callback' => 'system_php',
1052      'access arguments' => array('administer site configuration'),
1053      'type' => MENU_CALLBACK,
1054      'file' => 'system.admin.inc',
1055    );
1056  
1057    // Default page for batch operations.
1058    $items['batch'] = array(
1059      'page callback' => 'system_batch_page',
1060      'access callback' => TRUE,
1061      'theme callback' => '_system_batch_theme',
1062      'type' => MENU_CALLBACK,
1063      'file' => 'system.admin.inc',
1064    );
1065    return $items;
1066  }
1067  
1068  /**
1069   * Theme callback for the default batch page.
1070   */
1071  function _system_batch_theme() {
1072    // Retrieve the current state of the batch.
1073    $batch = &batch_get();
1074    if (!$batch && isset($_REQUEST['id'])) {
1075      require_once  DRUPAL_ROOT . '/includes/batch.inc';
1076      $batch = batch_load($_REQUEST['id']);
1077    }
1078    // Use the same theme as the page that started the batch.
1079    if (!empty($batch['theme'])) {
1080      return $batch['theme'];
1081    }
1082  }
1083  
1084  /**
1085   * Implements hook_library().
1086   */
1087  function system_library() {
1088    // Drupal's Ajax framework.
1089    $libraries['drupal.ajax'] = array(
1090      'title' => 'Drupal AJAX',
1091      'website' => 'http://api.drupal.org/api/drupal/includes--ajax.inc/group/ajax/7',
1092      'version' => VERSION,
1093      'js' => array(
1094        'misc/ajax.js' => array('group' => JS_LIBRARY, 'weight' => 2),
1095      ),
1096      'dependencies' => array(
1097        array('system', 'drupal.progress'),
1098      ),
1099    );
1100  
1101    // Drupal's batch API.
1102    $libraries['drupal.batch'] = array(
1103      'title' => 'Drupal batch API',
1104      'version' => VERSION,
1105      'js' => array(
1106        'misc/batch.js' => array('group' => JS_DEFAULT, 'cache' => FALSE),
1107      ),
1108      'dependencies' => array(
1109        array('system', 'drupal.progress'),
1110      ),
1111    );
1112  
1113    // Drupal's progress indicator.
1114    $libraries['drupal.progress'] = array(
1115      'title' => 'Drupal progress indicator',
1116      'version' => VERSION,
1117      'js' => array(
1118        'misc/progress.js' => array('group' => JS_DEFAULT),
1119      ),
1120    );
1121  
1122    // Drupal's form library.
1123    $libraries['drupal.form'] = array(
1124      'title' => 'Drupal form library',
1125      'version' => VERSION,
1126      'js' => array(
1127        'misc/form.js' => array('group' => JS_LIBRARY, 'weight' => 1),
1128      ),
1129    );
1130  
1131    // Drupal's states library.
1132    $libraries['drupal.states'] = array(
1133      'title' => 'Drupal states',
1134      'version' => VERSION,
1135      'js' => array(
1136        'misc/states.js' => array('group' => JS_LIBRARY, 'weight' => 1),
1137      ),
1138    );
1139  
1140    // Drupal's collapsible fieldset.
1141    $libraries['drupal.collapse'] = array(
1142      'title' => 'Drupal collapsible fieldset',
1143      'version' => VERSION,
1144      'js' => array(
1145        'misc/collapse.js' => array('group' => JS_DEFAULT),
1146      ),
1147      'dependencies' => array(
1148        // collapse.js relies on drupalGetSummary in form.js
1149        array('system', 'drupal.form'),
1150      ),
1151    );
1152  
1153    // Drupal's resizable textarea.
1154    $libraries['drupal.textarea'] = array(
1155      'title' => 'Drupal resizable textarea',
1156      'version' => VERSION,
1157      'js' => array(
1158        'misc/textarea.js' => array('group' => JS_DEFAULT),
1159      ),
1160    );
1161  
1162    // Drupal's autocomplete widget.
1163    $libraries['drupal.autocomplete'] = array(
1164      'title' => 'Drupal autocomplete',
1165      'version' => VERSION,
1166      'js' => array(
1167        'misc/autocomplete.js' => array('group' => JS_DEFAULT),
1168      ),
1169    );
1170  
1171    // jQuery.
1172    $libraries['jquery'] = array(
1173      'title' => 'jQuery',
1174      'website' => 'http://jquery.com',
1175      'version' => '1.4.4',
1176      'js' => array(
1177        'misc/jquery.js' => array('group' => JS_LIBRARY, 'weight' => -20),
1178      ),
1179    );
1180  
1181    // jQuery Once.
1182    $libraries['jquery.once'] = array(
1183      'title' => 'jQuery Once',
1184      'website' => 'http://plugins.jquery.com/project/once',
1185      'version' => '1.2',
1186      'js' => array(
1187        'misc/jquery.once.js' => array('group' => JS_LIBRARY, 'weight' => -19),
1188      ),
1189    );
1190  
1191    // jQuery Form Plugin.
1192    $libraries['jquery.form'] = array(
1193      'title' => 'jQuery Form Plugin',
1194      'website' => 'http://malsup.com/jquery/form/',
1195      'version' => '2.52',
1196      'js' => array(
1197        'misc/jquery.form.js' => array(),
1198      ),
1199      'dependencies' => array(
1200        array('system', 'jquery.cookie'),
1201      ),
1202    );
1203  
1204    // jQuery BBQ plugin.
1205    $libraries['jquery.bbq'] = array(
1206      'title' => 'jQuery BBQ',
1207      'website' => 'http://benalman.com/projects/jquery-bbq-plugin/',
1208      'version' => '1.2.1',
1209      'js' => array(
1210        'misc/jquery.ba-bbq.js' => array(),
1211      ),
1212    );
1213  
1214    // Vertical Tabs.
1215    $libraries['drupal.vertical-tabs'] = array(
1216      'title' => 'Vertical Tabs',
1217      'website' => 'http://drupal.org/node/323112',
1218      'version' => '1.0',
1219      'js' => array(
1220        'misc/vertical-tabs.js' => array(),
1221      ),
1222      'css' => array(
1223        'misc/vertical-tabs.css' => array(),
1224      ),
1225      'dependencies' => array(
1226        // Vertical tabs relies on drupalGetSummary in form.js
1227        array('system', 'drupal.form'),
1228      ),
1229    );
1230  
1231    // Farbtastic.
1232    $libraries['farbtastic'] = array(
1233      'title' => 'Farbtastic',
1234      'website' => 'http://code.google.com/p/farbtastic/',
1235      'version' => '1.2',
1236      'js' => array(
1237        'misc/farbtastic/farbtastic.js' => array(),
1238      ),
1239      'css' => array(
1240        'misc/farbtastic/farbtastic.css' => array(),
1241      ),
1242    );
1243  
1244    // Cookie.
1245    $libraries['jquery.cookie'] = array(
1246      'title' => 'Cookie',
1247      'website' => 'http://plugins.jquery.com/project/cookie',
1248      'version' => '1.0',
1249      'js' => array(
1250        'misc/jquery.cookie.js' => array(),
1251      ),
1252    );
1253  
1254    // jQuery UI.
1255    $libraries['ui'] = array(
1256      'title' => 'jQuery UI: Core',
1257      'website' => 'http://jqueryui.com',
1258      'version' => '1.8.7',
1259      'js' => array(
1260        'misc/ui/jquery.ui.core.min.js' => array('group' => JS_LIBRARY, 'weight' => -11),
1261      ),
1262      'css' => array(
1263        'misc/ui/jquery.ui.core.css' => array(),
1264        'misc/ui/jquery.ui.theme.css' => array(),
1265      ),
1266    );
1267    $libraries['ui.accordion'] = array(
1268      'title' => 'jQuery UI: Accordion',
1269      'website' => 'http://jqueryui.com/demos/accordion/',
1270      'version' => '1.8.7',
1271      'js' => array(
1272        'misc/ui/jquery.ui.accordion.min.js' => array(),
1273      ),
1274      'css' => array(
1275        'misc/ui/jquery.ui.accordion.css' => array(),
1276      ),
1277      'dependencies' => array(
1278        array('system', 'ui.widget'),
1279      ),
1280    );
1281    $libraries['ui.autocomplete'] = array(
1282      'title' => 'jQuery UI: Autocomplete',
1283      'website' => 'http://jqueryui.com/demos/autocomplete/',
1284      'version' => '1.8.7',
1285      'js' => array(
1286        'misc/ui/jquery.ui.autocomplete.min.js' => array(),
1287      ),
1288      'css' => array(
1289        'misc/ui/jquery.ui.autocomplete.css' => array(),
1290      ),
1291      'dependencies' => array(
1292        array('system', 'ui.widget'),
1293        array('system', 'ui.position'),
1294      ),
1295    );
1296    $libraries['ui.button'] = array(
1297      'title' => 'jQuery UI: Button',
1298      'website' => 'http://jqueryui.com/demos/button/',
1299      'version' => '1.8.7',
1300      'js' => array(
1301        'misc/ui/jquery.ui.button.min.js' => array(),
1302      ),
1303      'css' => array(
1304        'misc/ui/jquery.ui.button.css' => array(),
1305      ),
1306      'dependencies' => array(
1307        array('system', 'ui.widget'),
1308      ),
1309    );
1310    $libraries['ui.datepicker'] = array(
1311      'title' => 'jQuery UI: Date Picker',
1312      'website' => 'http://jqueryui.com/demos/datepicker/',
1313      'version' => '1.8.7',
1314      'js' => array(
1315        'misc/ui/jquery.ui.datepicker.min.js' => array(),
1316      ),
1317      'css' => array(
1318        'misc/ui/jquery.ui.datepicker.css' => array(),
1319      ),
1320      'dependencies' => array(
1321        array('system', 'ui'),
1322      ),
1323    );
1324    $libraries['ui.dialog'] = array(
1325      'title' => 'jQuery UI: Dialog',
1326      'website' => 'http://jqueryui.com/demos/dialog/',
1327      'version' => '1.8.7',
1328      'js' => array(
1329        'misc/ui/jquery.ui.dialog.min.js' => array(),
1330      ),
1331      'css' => array(
1332        'misc/ui/jquery.ui.dialog.css' => array(),
1333      ),
1334      'dependencies' => array(
1335        array('system', 'ui.widget'),
1336        array('system', 'ui.button'),
1337        array('system', 'ui.draggable'),
1338        array('system', 'ui.mouse'),
1339        array('system', 'ui.position'),
1340        array('system', 'ui.resizable'),
1341      ),
1342    );
1343    $libraries['ui.draggable'] = array(
1344      'title' => 'jQuery UI: Draggable',
1345      'website' => 'http://jqueryui.com/demos/draggable/',
1346      'version' => '1.8.7',
1347      'js' => array(
1348        'misc/ui/jquery.ui.draggable.min.js' => array(),
1349      ),
1350      'dependencies' => array(
1351        array('system', 'ui.widget'),
1352        array('system', 'ui.mouse'),
1353      ),
1354    );
1355    $libraries['ui.droppable'] = array(
1356      'title' => 'jQuery UI: Droppable',
1357      'website' => 'http://jqueryui.com/demos/droppable/',
1358      'version' => '1.8.7',
1359      'js' => array(
1360        'misc/ui/jquery.ui.droppable.min.js' => array(),
1361      ),
1362      'dependencies' => array(
1363        array('system', 'ui.widget'),
1364        array('system', 'ui.mouse'),
1365        array('system', 'ui.draggable'),
1366      ),
1367    );
1368    $libraries['ui.mouse'] = array(
1369      'title' => 'jQuery UI: Mouse',
1370      'website' => 'http://docs.jquery.com/UI/Mouse',
1371      'version' => '1.8.7',
1372      'js' => array(
1373        'misc/ui/jquery.ui.mouse.min.js' => array(),
1374      ),
1375      'dependencies' => array(
1376        array('system', 'ui.widget'),
1377      ),
1378    );
1379    $libraries['ui.position'] = array(
1380      'title' => 'jQuery UI: Position',
1381      'website' => 'http://jqueryui.com/demos/position/',
1382      'version' => '1.8.7',
1383      'js' => array(
1384        'misc/ui/jquery.ui.position.min.js' => array(),
1385      ),
1386    );
1387    $libraries['ui.progressbar'] = array(
1388      'title' => 'jQuery UI: Progress Bar',
1389      'website' => 'http://jqueryui.com/demos/progressbar/',
1390      'version' => '1.8.7',
1391      'js' => array(
1392        'misc/ui/jquery.ui.progressbar.min.js' => array(),
1393      ),
1394      'css' => array(
1395        'misc/ui/jquery.ui.progressbar.css' => array(),
1396      ),
1397      'dependencies' => array(
1398        array('system', 'ui.widget'),
1399      ),
1400    );
1401    $libraries['ui.resizable'] = array(
1402      'title' => 'jQuery UI: Resizable',
1403      'website' => 'http://jqueryui.com/demos/resizable/',
1404      'version' => '1.8.7',
1405      'js' => array(
1406        'misc/ui/jquery.ui.resizable.min.js' => array(),
1407      ),
1408      'css' => array(
1409        'misc/ui/jquery.ui.resizable.css' => array(),
1410      ),
1411      'dependencies' => array(
1412        array('system', 'ui.widget'),
1413        array('system', 'ui.mouse'),
1414      ),
1415    );
1416    $libraries['ui.selectable'] = array(
1417      'title' => 'jQuery UI: Selectable',
1418      'website' => 'http://jqueryui.com/demos/selectable/',
1419      'version' => '1.8.7',
1420      'js' => array(
1421        'misc/ui/jquery.ui.selectable.min.js' => array(),
1422      ),
1423      'css' => array(
1424        'misc/ui/jquery.ui.selectable.css' => array(),
1425      ),
1426      'dependencies' => array(
1427        array('system', 'ui.widget'),
1428        array('system', 'ui.mouse'),
1429      ),
1430    );
1431    $libraries['ui.slider'] = array(
1432      'title' => 'jQuery UI: Slider',
1433      'website' => 'http://jqueryui.com/demos/slider/',
1434      'version' => '1.8.7',
1435      'js' => array(
1436        'misc/ui/jquery.ui.slider.min.js' => array(),
1437      ),
1438      'css' => array(
1439        'misc/ui/jquery.ui.slider.css' => array(),
1440      ),
1441      'dependencies' => array(
1442        array('system', 'ui.widget'),
1443        array('system', 'ui.mouse'),
1444      ),
1445    );
1446    $libraries['ui.sortable'] = array(
1447      'title' => 'jQuery UI: Sortable',
1448      'website' => 'http://jqueryui.com/demos/sortable/',
1449      'version' => '1.8.7',
1450      'js' => array(
1451        'misc/ui/jquery.ui.sortable.min.js' => array(),
1452      ),
1453      'dependencies' => array(
1454        array('system', 'ui.widget'),
1455        array('system', 'ui.mouse'),
1456      ),
1457    );
1458    $libraries['ui.tabs'] = array(
1459      'title' => 'jQuery UI: Tabs',
1460      'website' => 'http://jqueryui.com/demos/tabs/',
1461      'version' => '1.8.7',
1462      'js' => array(
1463        'misc/ui/jquery.ui.tabs.min.js' => array(),
1464      ),
1465      'css' => array(
1466        'misc/ui/jquery.ui.tabs.css' => array(),
1467      ),
1468      'dependencies' => array(
1469        array('system', 'ui.widget'),
1470      ),
1471    );
1472    $libraries['ui.widget'] = array(
1473      'title' => 'jQuery UI: Widget',
1474      'website' => 'http://docs.jquery.com/UI/Widget',
1475      'version' => '1.8.7',
1476      'js' => array(
1477        'misc/ui/jquery.ui.widget.min.js' => array('group' => JS_LIBRARY, 'weight' => -10),
1478      ),
1479      'dependencies' => array(
1480        array('system', 'ui'),
1481      ),
1482    );
1483    $libraries['effects'] = array(
1484      'title' => 'jQuery UI: Effects',
1485      'website' => 'http://jqueryui.com/demos/effect/',
1486      'version' => '1.8.7',
1487      'js' => array(
1488        'misc/ui/jquery.effects.core.min.js' => array('group' => JS_LIBRARY, 'weight' => -9),
1489      ),
1490    );
1491    $libraries['effects.blind'] = array(
1492      'title' => 'jQuery UI: Effects Blind',
1493      'website' => 'http://jqueryui.com/demos/effect/',
1494      'version' => '1.8.7',
1495      'js' => array(
1496        'misc/ui/jquery.effects.blind.min.js' => array(),
1497      ),
1498      'dependencies' => array(
1499        array('system', 'effects'),
1500      ),
1501    );
1502    $libraries['effects.bounce'] = array(
1503      'title' => 'jQuery UI: Effects Bounce',
1504      'website' => 'http://jqueryui.com/demos/effect/',
1505      'version' => '1.8.7',
1506      'js' => array(
1507        'misc/ui/jquery.effects.bounce.min.js' => array(),
1508      ),
1509      'dependencies' => array(
1510        array('system', 'effects'),
1511      ),
1512    );
1513    $libraries['effects.clip'] = array(
1514      'title' => 'jQuery UI: Effects Clip',
1515      'website' => 'http://jqueryui.com/demos/effect/',
1516      'version' => '1.8.7',
1517      'js' => array(
1518        'misc/ui/jquery.effects.clip.min.js' => array(),
1519      ),
1520      'dependencies' => array(
1521        array('system', 'effects'),
1522      ),
1523    );
1524    $libraries['effects.drop'] = array(
1525      'title' => 'jQuery UI: Effects Drop',
1526      'website' => 'http://jqueryui.com/demos/effect/',
1527      'version' => '1.8.7',
1528      'js' => array(
1529        'misc/ui/jquery.effects.drop.min.js' => array(),
1530      ),
1531      'dependencies' => array(
1532        array('system', 'effects'),
1533      ),
1534    );
1535    $libraries['effects.explode'] = array(
1536      'title' => 'jQuery UI: Effects Explode',
1537      'website' => 'http://jqueryui.com/demos/effect/',
1538      'version' => '1.8.7',
1539      'js' => array(
1540        'misc/ui/jquery.effects.explode.min.js' => array(),
1541      ),
1542      'dependencies' => array(
1543        array('system', 'effects'),
1544      ),
1545    );
1546    $libraries['effects.fade'] = array(
1547      'title' => 'jQuery UI: Effects Fade',
1548      'website' => 'http://jqueryui.com/demos/effect/',
1549      'version' => '1.8.7',
1550      'js' => array(
1551        'misc/ui/jquery.effects.fade.min.js' => array(),
1552      ),
1553      'dependencies' => array(
1554        array('system', 'effects'),
1555      ),
1556    );
1557    $libraries['effects.fold'] = array(
1558      'title' => 'jQuery UI: Effects Fold',
1559      'website' => 'http://jqueryui.com/demos/effect/',
1560      'version' => '1.8.7',
1561      'js' => array(
1562        'misc/ui/jquery.effects.fold.min.js' => array(),
1563      ),
1564      'dependencies' => array(
1565        array('system', 'effects'),
1566      ),
1567    );
1568    $libraries['effects.highlight'] = array(
1569      'title' => 'jQuery UI: Effects Highlight',
1570      'website' => 'http://jqueryui.com/demos/effect/',
1571      'version' => '1.8.7',
1572      'js' => array(
1573        'misc/ui/jquery.effects.highlight.min.js' => array(),
1574      ),
1575      'dependencies' => array(
1576        array('system', 'effects'),
1577      ),
1578    );
1579    $libraries['effects.pulsate'] = array(
1580      'title' => 'jQuery UI: Effects Pulsate',
1581      'website' => 'http://jqueryui.com/demos/effect/',
1582      'version' => '1.8.7',
1583      'js' => array(
1584        'misc/ui/jquery.effects.pulsate.min.js' => array(),
1585      ),
1586      'dependencies' => array(
1587        array('system', 'effects'),
1588      ),
1589    );
1590    $libraries['effects.scale'] = array(
1591      'title' => 'jQuery UI: Effects Scale',
1592      'website' => 'http://jqueryui.com/demos/effect/',
1593      'version' => '1.8.7',
1594      'js' => array(
1595        'misc/ui/jquery.effects.scale.min.js' => array(),
1596      ),
1597      'dependencies' => array(
1598        array('system', 'effects'),
1599      ),
1600    );
1601    $libraries['effects.shake'] = array(
1602      'title' => 'jQuery UI: Effects Shake',
1603      'website' => 'http://jqueryui.com/demos/effect/',
1604      'version' => '1.8.7',
1605      'js' => array(
1606        'misc/ui/jquery.effects.shake.min.js' => array(),
1607      ),
1608      'dependencies' => array(
1609        array('system', 'effects'),
1610      ),
1611    );
1612    $libraries['effects.slide'] = array(
1613      'title' => 'jQuery UI: Effects Slide',
1614      'website' => 'http://jqueryui.com/demos/effect/',
1615      'version' => '1.8.7',
1616      'js' => array(
1617        'misc/ui/jquery.effects.slide.min.js' => array(),
1618      ),
1619      'dependencies' => array(
1620        array('system', 'effects'),
1621      ),
1622    );
1623    $libraries['effects.transfer'] = array(
1624      'title' => 'jQuery UI: Effects Transfer',
1625      'website' => 'http://jqueryui.com/demos/effect/',
1626      'version' => '1.8.7',
1627      'js' => array(
1628        'misc/ui/jquery.effects.transfer.min.js' => array(),
1629      ),
1630      'dependencies' => array(
1631        array('system', 'effects'),
1632      ),
1633    );
1634  
1635    // These library names are deprecated. Earlier versions of Drupal 7 didn't
1636    // consistently namespace their libraries, so these names are included for
1637    // backwards compatibility with those versions.
1638    $libraries['once'] = &$libraries['jquery.once'];
1639    $libraries['form'] = &$libraries['jquery.form'];
1640    $libraries['jquery-bbq'] = &$libraries['jquery.bbq'];
1641    $libraries['vertical-tabs'] = &$libraries['drupal.vertical-tabs'];
1642    $libraries['cookie'] = &$libraries['jquery.cookie'];
1643  
1644    return $libraries;
1645  }
1646  
1647  /**
1648   * Implements hook_stream_wrappers().
1649   */
1650  function system_stream_wrappers() {
1651    $wrappers = array(
1652      'public' => array(
1653        'name' => t('Public files'),
1654        'class' => 'DrupalPublicStreamWrapper',
1655        'description' => t('Public local files served by the webserver.'),
1656        'type' => STREAM_WRAPPERS_LOCAL_NORMAL,
1657      ),
1658      'temporary' => array(
1659        'name' => t('Temporary files'),
1660        'class' => 'DrupalTemporaryStreamWrapper',
1661        'description' => t('Temporary local files for upload and previews.'),
1662        'type' => STREAM_WRAPPERS_LOCAL_HIDDEN,
1663      ),
1664    );
1665  
1666    // Only register the private file stream wrapper if a file path has been set.
1667    if (variable_get('file_private_path', FALSE)) {
1668      $wrappers['private'] = array(
1669        'name' => t('Private files'),
1670        'class' => 'DrupalPrivateStreamWrapper',
1671        'description' => t('Private local files served by Drupal.'),
1672        'type' => STREAM_WRAPPERS_LOCAL_NORMAL,
1673      );
1674    }
1675  
1676    return $wrappers;
1677  }
1678  
1679  /**
1680   * Retrieve a blocked IP address from the database.
1681   *
1682   * @param $iid integer
1683   *   The ID of the blocked IP address to retrieve.
1684   *
1685   * @return
1686   *   The blocked IP address from the database as an array.
1687   */
1688  function blocked_ip_load($iid) {
1689    return db_query("SELECT * FROM {blocked_ips} WHERE iid = :iid", array(':iid' => $iid))->fetchAssoc();
1690  }
1691  
1692  /**
1693   * Menu item access callback - only admin or enabled themes can be accessed.
1694   */
1695  function _system_themes_access($theme) {
1696    return user_access('administer themes') && drupal_theme_access($theme);
1697  }
1698  
1699  /**
1700   * @defgroup authorize Authorized operations
1701   * @{
1702   * Functions to run operations with elevated privileges via authorize.php.
1703   *
1704   * Because of the Update manager functionality included in Drupal core, there
1705   * is a mechanism for running operations with elevated file system privileges,
1706   * the top-level authorize.php script. This script runs at a reduced Drupal
1707   * bootstrap level so that it is not reliant on the entire site being
1708   * functional. The operations use a FileTransfer class to manipulate code
1709   * installed on the system as the user that owns the files, not the user that
1710   * the httpd is running as.
1711   *
1712   * The first setup is to define a callback function that should be authorized
1713   * to run with the elevated privileges. This callback should take a
1714   * FileTransfer as its first argument, although you can define an array of
1715   * other arguments it should be invoked with. The callback should be placed in
1716   * a separate .inc file that will be included by authorize.php.
1717   *
1718   * To run the operation, certain data must be saved into the SESSION, and then
1719   * the flow of control should be redirected to the authorize.php script. There
1720   * are two ways to do this, either to call system_authorized_run() directly,
1721   * or to call system_authorized_init() and then redirect to authorize.php,
1722   * using the URL from system_authorized_get_url(). Redirecting yourself is
1723   * necessary when your authorized operation is being triggered by a form
1724   * submit handler, since calling drupal_goto() in a submit handler is a bad
1725   * idea, and you should instead set $form_state['redirect'].
1726   *
1727   * Once the SESSION is setup for the operation and the user is redirected to
1728   * authorize.php, they will be prompted for their connection credentials (core
1729   * provides FTP and SSH by default, although other connection classes can be
1730   * added via contributed modules). With valid credentials, authorize.php will
1731   * instantiate the appropriate FileTransfer object, and then invoke the
1732   * desired operation passing in that object. The authorize.php script can act
1733   * as a Batch API processing page, if the operation requires a batch.
1734   *
1735   * @see authorize.php
1736   * @see FileTransfer
1737   * @see hook_filetransfer_info()
1738   */
1739  
1740  /**
1741   * Setup a given callback to run via authorize.php with elevated privileges.
1742   *
1743   * To use authorize.php, certain variables must be stashed into $_SESSION. This
1744   * function sets up all the necessary $_SESSION variables. The calling function
1745   * should then redirect to authorize.php, using the full path returned by
1746   * system_authorized_get_url(). That initiates the workflow that will eventually
1747   * lead to the callback being invoked. The callback will be invoked at a low
1748   * bootstrap level, without all modules being invoked, so it needs to be careful
1749   * not to assume any code exists. Example (system_authorized_run()):
1750   * @code
1751   *   system_authorized_init($callback, $file, $arguments, $page_title);
1752   *   drupal_goto(system_authorized_get_url());
1753   * @endcode
1754   * Example (update_manager_install_form_submit()):
1755   * @code
1756   *  system_authorized_init('update_authorize_run_install',
1757   *    drupal_get_path('module', 'update') . '/update.authorize.inc',
1758   *    $arguments, t('Update manager'));
1759   *  $form_state['redirect'] = system_authorized_get_url();
1760   * @endcode
1761   *
1762   * @param $callback
1763   *   The name of the function to invoke once the user authorizes the operation.
1764   * @param $file
1765   *   The full path to the file where the callback function is implemented.
1766   * @param $arguments
1767   *   Optional array of arguments to pass into the callback when it is invoked.
1768   *   Note that the first argument to the callback is always the FileTransfer
1769   *   object created by authorize.php when the user authorizes the operation.
1770   * @param $page_title
1771   *   Optional string to use as the page title once redirected to authorize.php.
1772   * @return
1773   *   Nothing, this function just initializes variables in the user's session.
1774   */
1775  function system_authorized_init($callback, $file, $arguments = array(), $page_title = NULL) {
1776    // First, figure out what file transfer backends the site supports, and put
1777    // all of those in the SESSION so that authorize.php has access to all of
1778    // them via the class autoloader, even without a full bootstrap.
1779    $_SESSION['authorize_filetransfer_info'] = drupal_get_filetransfer_info();
1780  
1781    // Now, define the callback to invoke.
1782    $_SESSION['authorize_operation'] = array(
1783      'callback' => $callback,
1784      'file' => $file,
1785      'arguments' => $arguments,
1786    );
1787  
1788    if (isset($page_title)) {
1789      $_SESSION['authorize_operation']['page_title'] = $page_title;
1790    }
1791  }
1792  
1793  /**
1794   * Return the URL for the authorize.php script.
1795   *
1796   * @param array $options
1797   *   Optional array of options to pass to url().
1798   * @return
1799   *   The full URL to authorize.php, using HTTPS if available.
1800   *
1801   * @see system_authorized_init()
1802   */
1803  function system_authorized_get_url(array $options = array()) {
1804    global $base_url;
1805    // Force HTTPS if available, regardless of what the caller specifies.
1806    $options['https'] = TRUE;
1807    // We prefix with $base_url so we get a full path even if clean URLs are
1808    // disabled.
1809    return url($base_url . '/authorize.php', $options);
1810  }
1811  
1812  /**
1813   * Returns the URL for the authorize.php script when it is processing a batch.
1814   */
1815  function system_authorized_batch_processing_url() {
1816    return system_authorized_get_url(array('query' => array('batch' => '1')));
1817  }
1818  
1819  /**
1820   * Setup and invoke an operation using authorize.php.
1821   *
1822   * @see system_authorized_init()
1823   */
1824  function system_authorized_run($callback, $file, $arguments = array(), $page_title = NULL) {
1825    system_authorized_init($callback, $file, $arguments, $page_title);
1826    drupal_goto(system_authorized_get_url());
1827  }
1828  
1829  /**
1830   * Use authorize.php to run batch_process().
1831   *
1832   * @see batch_process()
1833   */
1834  function system_authorized_batch_process() {
1835    $finish_url = system_authorized_get_url();
1836    $process_url = system_authorized_batch_processing_url();
1837    batch_process($finish_url, $process_url);
1838  }
1839  
1840  /**
1841   * @} End of "defgroup authorize".
1842   */
1843  
1844  /**
1845   * Implements hook_updater_info().
1846   */
1847  function system_updater_info() {
1848    return array(
1849      'module' => array(
1850        'class' => 'ModuleUpdater',
1851        'name' => t('Update modules'),
1852        'weight' => 0,
1853      ),
1854      'theme' => array(
1855        'class' => 'ThemeUpdater',
1856        'name' => t('Update themes'),
1857        'weight' => 0,
1858      ),
1859    );
1860  }
1861  
1862  /**
1863   * Implements hook_filetransfer_info().
1864   */
1865  function system_filetransfer_info() {
1866    $backends = array();
1867  
1868    // This is the default, will be available on most systems.
1869    if (function_exists('ftp_connect')) {
1870      $backends['ftp'] = array(
1871        'title' => t('FTP'),
1872        'class' => 'FileTransferFTP',
1873        'file' => 'ftp.inc',
1874        'file path' => 'includes/filetransfer',
1875        'weight' => 0,
1876      );
1877    }
1878  
1879    // SSH2 lib connection is only available if the proper PHP extension is
1880    // installed.
1881    if (function_exists('ssh2_connect')) {
1882      $backends['ssh'] = array(
1883        'title' => t('SSH'),
1884        'class' => 'FileTransferSSH',
1885        'file' => 'ssh.inc',
1886        'file path' => 'includes/filetransfer',
1887        'weight' => 20,
1888      );
1889    }
1890    return $backends;
1891  }
1892  
1893  /**
1894   * Implements hook_init().
1895   */
1896  function system_init() {
1897    $path = drupal_get_path('module', 'system');
1898    // Add the CSS for this module. These aren't in system.info, because they
1899    // need to be in the CSS_SYSTEM group rather than the CSS_DEFAULT group.
1900    drupal_add_css($path . '/system.base.css', array('group' => CSS_SYSTEM, 'every_page' => TRUE));
1901    if (path_is_admin(current_path())) {
1902      drupal_add_css($path . '/system.admin.css', array('group' => CSS_SYSTEM));
1903    }
1904    drupal_add_css($path . '/system.menus.css', array('group' => CSS_SYSTEM, 'every_page' => TRUE));
1905    drupal_add_css($path . '/system.messages.css', array('group' => CSS_SYSTEM, 'every_page' => TRUE));
1906    drupal_add_css($path . '/system.theme.css', array('group' => CSS_SYSTEM, 'every_page' => TRUE));
1907  
1908    // Ignore slave database servers for this request.
1909    //
1910    // In Drupal's distributed database structure, new data is written to the master
1911    // and then propagated to the slave servers.  This means there is a lag
1912    // between when data is written to the master and when it is available on the slave.
1913    // At these times, we will want to avoid using a slave server temporarily.
1914    // For example, if a user posts a new node then we want to disable the slave
1915    // server for that user temporarily to allow the slave server to catch up.
1916    // That way, that user will see their changes immediately while for other
1917    // users we still get the benefits of having a slave server, just with slightly
1918    // stale data.  Code that wants to disable the slave server should use the
1919    // db_set_ignore_slave() function to set $_SESSION['ignore_slave_server'] to
1920    // the timestamp after which the slave can be re-enabled.
1921    if (isset($_SESSION['ignore_slave_server'])) {
1922      if ($_SESSION['ignore_slave_server'] >= REQUEST_TIME) {
1923        Database::ignoreTarget('default', 'slave');
1924      }
1925      else {
1926        unset($_SESSION['ignore_slave_server']);
1927      }
1928    }
1929  
1930    // Add CSS/JS files from module .info files.
1931    system_add_module_assets();
1932  }
1933  
1934  /**
1935   * Adds CSS and JavaScript files declared in module .info files.
1936   */
1937  function system_add_module_assets() {
1938    foreach (system_get_info('module') as $module => $info) {
1939      if (!empty($info['stylesheets'])) {
1940        foreach ($info['stylesheets'] as $media => $stylesheets) {
1941          foreach ($stylesheets as $stylesheet) {
1942            drupal_add_css($stylesheet, array('every_page' => TRUE, 'media' => $media));
1943          }
1944        }
1945      }
1946      if (!empty($info['scripts'])) {
1947        foreach ($info['scripts'] as $script) {
1948          drupal_add_js($script, array('every_page' => TRUE));
1949        }
1950      }
1951    }
1952  }
1953  
1954  /**
1955   * Implements hook_custom_theme().
1956   */
1957  function system_custom_theme() {
1958    if (user_access('view the administration theme') && path_is_admin(current_path())) {
1959      return variable_get('admin_theme');
1960    }
1961  }
1962  
1963  /**
1964   * Implements hook_form_FORM_ID_alter().
1965   */
1966  function system_form_user_profile_form_alter(&$form, &$form_state) {
1967    if ($form['#user_category'] == 'account') {
1968      if (variable_get('configurable_timezones', 1)) {
1969        system_user_timezone($form, $form_state);
1970      }
1971      return $form;
1972    }
1973  }
1974  
1975  /**
1976   * Implements hook_form_FORM_ID_alter().
1977   */
1978  function system_form_user_register_form_alter(&$form, &$form_state) {
1979    if (variable_get('configurable_timezones', 1)) {
1980      if (variable_get('user_default_timezone', DRUPAL_USER_TIMEZONE_DEFAULT) == DRUPAL_USER_TIMEZONE_SELECT) {
1981        system_user_timezone($form, $form_state);
1982      }
1983      else {
1984        $form['account']['timezone'] = array(
1985          '#type' => 'hidden',
1986          '#value' => variable_get('user_default_timezone', DRUPAL_USER_TIMEZONE_DEFAULT) ? '' : variable_get('date_default_timezone', ''),
1987        );
1988      }
1989      return $form;
1990    }
1991  }
1992  
1993  /**
1994   * Implements hook_user_login().
1995   */
1996  function system_user_login(&$edit, $account) {
1997    // If the user has a NULL time zone, notify them to set a time zone.
1998    if (!$account->timezone && variable_get('configurable_timezones', 1) && variable_get('empty_timezone_message', 0)) {
1999      drupal_set_message(t('Configure your <a href="@user-edit">account time zone setting</a>.', array('@user-edit' => url("user/$account->uid/edit", array('query' => drupal_get_destination(), 'fragment' => 'edit-timezone')))));
2000    }
2001  }
2002  
2003  /**
2004   * Add the time zone field to the user edit and register forms.
2005   */
2006  function system_user_timezone(&$form, &$form_state) {
2007    global $user;
2008  
2009    $account = $form['#user'];
2010  
2011    $form['timezone'] = array(
2012      '#type' => 'fieldset',
2013      '#title' => t('Locale settings'),
2014      '#weight' => 6,
2015      '#collapsible' => TRUE,
2016    );
2017    $form['timezone']['timezone'] = array(
2018      '#type' => 'select',
2019      '#title' => t('Time zone'),
2020      '#default_value' => isset($account->timezone) ? $account->timezone : ($account->uid == $user->uid ? variable_get('date_default_timezone', '') : ''),
2021      '#options' => system_time_zones($account->uid != $user->uid),
2022      '#description' => t('Select the desired local time and time zone. Dates and times throughout this site will be displayed using this time zone.'),
2023    );
2024    if (!isset($account->timezone) && $account->uid == $user->uid && empty($form_state['input']['timezone'])) {
2025      $form['timezone']['#description'] = t('Your time zone setting will be automatically detected if possible. Confirm the selection and click save.');
2026      $form['timezone']['timezone']['#attributes'] = array('class' => array('timezone-detect'));
2027      drupal_add_js('misc/timezone.js');
2028    }
2029  }
2030  
2031  /**
2032   * Implements hook_block_info().
2033   */
2034  function system_block_info() {
2035    $blocks['main'] = array(
2036      'info' => t('Main page content'),
2037       // Cached elsewhere.
2038      'cache' => DRUPAL_NO_CACHE,
2039      // Auto-enable in 'content' region by default, which always exists.
2040      // @see system_themes_page(), drupal_render_page()
2041      'status' => 1,
2042      'region' => 'content',
2043    );
2044    $blocks['powered-by'] = array(
2045      'info' => t('Powered by Drupal'),
2046      'weight' => '10',
2047      'cache' => DRUPAL_NO_CACHE,
2048    );
2049    $blocks['help'] = array(
2050      'info' => t('System help'),
2051      'weight' => '5',
2052      'cache' => DRUPAL_NO_CACHE,
2053      // Auto-enable in 'help' region by default, if the theme defines one.
2054      'status' => 1,
2055      'region' => 'help',
2056    );
2057    // System-defined menu blocks.
2058    foreach (menu_list_system_menus() as $menu_name => $title) {
2059      $blocks[$menu_name]['info'] = t($title);
2060      // Menu blocks can't be cached because each menu item can have
2061      // a custom access callback. menu.inc manages its own caching.
2062      $blocks[$menu_name]['cache'] = DRUPAL_NO_CACHE;
2063    }
2064    return $blocks;
2065  }
2066  
2067  /**
2068   * Implements hook_block_view().
2069   *
2070   * Generate a block with a promotional link to Drupal.org and
2071   * all system menu blocks.
2072   */
2073  function system_block_view($delta = '') {
2074    $block = array();
2075    switch ($delta) {
2076      case 'main':
2077        $block['subject'] = NULL;
2078        $block['content'] = drupal_set_page_content();
2079        return $block;
2080      case 'powered-by':
2081        $block['subject'] = NULL;
2082        $block['content'] = theme('system_powered_by');
2083        return $block;
2084      case 'help':
2085        $block['subject'] = NULL;
2086        $block['content'] = menu_get_active_help();
2087        return $block;
2088      default:
2089        // All system menu blocks.
2090        $system_menus = menu_list_system_menus();
2091        if (isset($system_menus[$delta])) {
2092          $block['subject'] = t($system_menus[$delta]);
2093          $block['content'] = menu_tree($delta);
2094          return $block;
2095        }
2096        break;
2097    }
2098  }
2099  
2100  /**
2101   * Implements hook_preprocess_block().
2102   */
2103  function system_preprocess_block(&$variables) {
2104    // System menu blocks should get the same class as menu module blocks.
2105    if ($variables['block']->module == 'system' && in_array($variables['block']->delta, array_keys(menu_list_system_menus()))) {
2106      $variables['classes_array'][] = 'block-menu';
2107    }
2108  }
2109  
2110  /**
2111   * Provide a single block on the administration overview page.
2112   *
2113   * @param $item
2114   *   The menu item to be displayed.
2115   */
2116  function system_admin_menu_block($item) {
2117    $cache = &drupal_static(__FUNCTION__, array());
2118    // If we are calling this function for a menu item that corresponds to a
2119    // local task (for example, admin/tasks), then we want to retrieve the
2120    // parent item's child links, not this item's (since this item won't have
2121    // any).
2122    if ($item['tab_root'] != $item['path']) {
2123      $item = menu_get_item($item['tab_root_href']);
2124    }
2125  
2126    if (!isset($item['mlid'])) {
2127      $item += db_query("SELECT mlid, menu_name FROM {menu_links} ml WHERE ml.router_path = :path AND module = 'system'", array(':path' => $item['path']))->fetchAssoc();
2128    }
2129  
2130    if (isset($cache[$item['mlid']])) {
2131      return $cache[$item['mlid']];
2132    }
2133  
2134    $content = array();
2135    $query = db_select('menu_links', 'ml', array('fetch' => PDO::FETCH_ASSOC));
2136    $query->join('menu_router', 'm', 'm.path = ml.router_path');
2137    $query
2138      ->fields('ml')
2139      // Weight should be taken from {menu_links}, not {menu_router}.
2140      ->fields('m', array_diff(drupal_schema_fields_sql('menu_router'), array('weight')))
2141      ->condition('ml.plid', $item['mlid'])
2142      ->condition('ml.menu_name', $item['menu_name'])
2143      ->condition('ml.hidden', 0);
2144  
2145    foreach ($query->execute() as $link) {
2146      _menu_link_translate($link);
2147      if ($link['access']) {
2148        // The link description, either derived from 'description' in
2149        // hook_menu() or customized via menu module is used as title attribute.
2150        if (!empty($link['localized_options']['attributes']['title'])) {
2151          $link['description'] = $link['localized_options']['attributes']['title'];
2152          unset($link['localized_options']['attributes']['title']);
2153        }
2154        // Prepare for sorting as in function _menu_tree_check_access().
2155        // The weight is offset so it is always positive, with a uniform 5-digits.
2156        $key = (50000 + $link['weight']) . ' ' . drupal_strtolower($link['title']) . ' ' . $link['mlid'];
2157        $content[$key] = $link;
2158      }
2159    }
2160    ksort($content);
2161    $cache[$item['mlid']] = $content;
2162    return $content;
2163  }
2164  
2165  /**
2166   * Checks the existence of the directory specified in $form_element.
2167   *
2168   * This function is called from the system_settings form to check all core
2169   * file directories (file_public_path, file_private_path, file_temporary_path).
2170   *
2171   * @param $form_element
2172   *   The form element containing the name of the directory to check.
2173   */
2174  function system_check_directory($form_element) {
2175    $directory = $form_element['#value'];
2176    if (strlen($directory) == 0) {
2177      return $form_element;
2178    }
2179  
2180    if (!is_dir($directory) && !drupal_mkdir($directory, NULL, TRUE)) {
2181      // If the directory does not exists and cannot be created.
2182      form_set_error($form_element['#parents'][0], t('The directory %directory does not exist and could not be created.', array('%directory' => $directory)));
2183      watchdog('file system', 'The directory %directory does not exist and could not be created.', array('%directory' => $directory), WATCHDOG_ERROR);
2184    }
2185  
2186    if (is_dir($directory) && !is_writable($directory) && !drupal_chmod($directory)) {
2187      // If the directory is not writable and cannot be made so.
2188      form_set_error($form_element['#parents'][0], t('The directory %directory exists but is not writable and could not be made writable.', array('%directory' => $directory)));
2189      watchdog('file system', 'The directory %directory exists but is not writable and could not be made writable.', array('%directory' => $directory), WATCHDOG_ERROR);
2190    }
2191    elseif (is_dir($directory)) {
2192      if ($form_element['#name'] == 'file_public_path') {
2193        // Create public .htaccess file.
2194        file_create_htaccess($directory, FALSE);
2195      }
2196      else {
2197        // Create private .htaccess file.
2198        file_create_htaccess($directory);
2199      }
2200    }
2201  
2202    return $form_element;
2203  }
2204  
2205  /**
2206   * Retrieves the current status of an array of files in the system table.
2207   *
2208   * @param $files
2209   *   An array of files to check.
2210   * @param $type
2211   *   The type of the files.
2212   */
2213  function system_get_files_database(&$files, $type) {
2214    // Extract current files from database.
2215    $result = db_query("SELECT filename, name, type, status, schema_version, weight FROM {system} WHERE type = :type", array(':type' => $type));
2216    foreach ($result as $file) {
2217      if (isset($files[$file->name]) && is_object($files[$file->name])) {
2218        $file->uri = $file->filename;
2219        foreach ($file as $key => $value) {
2220          if (!isset($files[$file->name]->$key)) {
2221            $files[$file->name]->$key = $value;
2222          }
2223        }
2224      }
2225    }
2226  }
2227  
2228  /**
2229   * Updates the records in the system table based on the files array.
2230   *
2231   * @param $files
2232   *   An array of files.
2233   * @param $type
2234   *   The type of the files.
2235   */
2236  function system_update_files_database(&$files, $type) {
2237    $result = db_query("SELECT * FROM {system} WHERE type = :type", array(':type' => $type));
2238  
2239    // Add all files that need to be deleted to a DatabaseCondition.
2240    $delete = db_or();
2241    foreach ($result as $file) {
2242      if (isset($files[$file->name]) && is_object($files[$file->name])) {
2243        // Keep the old filename from the database in case the file has moved.
2244        $old_filename = $file->filename;
2245  
2246        $updated_fields = array();
2247  
2248        // Handle info specially, compare the serialized value.
2249        $serialized_info = serialize($files[$file->name]->info);
2250        if ($serialized_info != $file->info) {
2251          $updated_fields['info'] = $serialized_info;
2252        }
2253        unset($file->info);
2254  
2255        // Scan remaining fields to find only the updated values.
2256        foreach ($file as $key => $value) {
2257          if (isset($files[$file->name]->$key) && $files[$file->name]->$key != $value) {
2258            $updated_fields[$key] = $files[$file->name]->$key;
2259          }
2260        }
2261  
2262        // Update the record.
2263        if (count($updated_fields)) {
2264          db_update('system')
2265            ->fields($updated_fields)
2266            ->condition('filename', $old_filename)
2267            ->execute();
2268        }
2269  
2270        // Indicate that the file exists already.
2271        $files[$file->name]->exists = TRUE;
2272      }
2273      else {
2274        // File is not found in file system, so delete record from the system table.
2275        $delete->condition('filename', $file->filename);
2276      }
2277    }
2278  
2279    if (count($delete) > 0) {
2280      // Delete all missing files from the system table, but only if the plugin
2281      // has never been installed.
2282      db_delete('system')
2283        ->condition($delete)
2284        ->condition('schema_version', -1)
2285        ->execute();
2286    }
2287  
2288    // All remaining files are not in the system table, so we need to add them.
2289    $query = db_insert('system')->fields(array('filename', 'name', 'type', 'owner', 'info'));
2290    foreach ($files as &$file) {
2291      if (isset($file->exists)) {
2292        unset($file->exists);
2293      }
2294      else {
2295        $query->values(array(
2296          'filename' => $file->uri,
2297          'name' => $file->name,
2298          'type' => $type,
2299          'owner' => isset($file->owner) ? $file->owner : '',
2300          'info' => serialize($file->info),
2301        ));
2302        $file->type = $type;
2303        $file->status = 0;
2304        $file->schema_version = -1;
2305      }
2306    }
2307    $query->execute();
2308  
2309    // If any module or theme was moved to a new location, we need to reset the
2310    // system_list() cache or we will continue to load the old copy, look for
2311    // schema updates in the wrong place, etc.
2312    system_list_reset();
2313  }
2314  
2315  /**
2316   * Returns an array of information about enabled modules or themes.
2317   *
2318   * This function returns the information from the {system} table corresponding
2319   * to the cached contents of the .info file for each active module or theme.
2320   *
2321   * @param $type
2322   *   Either 'module' or 'theme'.
2323   * @param $name
2324   *   (optional) The name of a module or theme whose information shall be
2325   *   returned. If omitted, all records for the provided $type will be returned.
2326   *   If $name does not exist in the provided $type or is not enabled, an empty
2327   *   array will be returned.
2328   *
2329   * @return
2330   *   An associative array of module or theme information keyed by name, or only
2331   *   information for $name, if given. If no records are available, an empty
2332   *   array is returned.
2333   *
2334   * @see system_rebuild_module_data()
2335   * @see system_rebuild_theme_data()
2336   */
2337  function system_get_info($type, $name = NULL) {
2338    $info = array();
2339    if ($type == 'module') {
2340      $type = 'module_enabled';
2341    }
2342    $list = system_list($type);
2343    foreach ($list as $shortname => $item) {
2344      if (!empty($item->status)) {
2345        $info[$shortname] = $item->info;
2346      }
2347    }
2348    if (isset($name)) {
2349      return isset($info[$name]) ? $info[$name] : array();
2350    }
2351    return $info;
2352  }
2353  
2354  /**
2355   * Helper function to scan and collect module .info data.
2356   *
2357   * @return
2358   *   An associative array of module information.
2359   */
2360  function _system_rebuild_module_data() {
2361    // Find modules
2362    $modules = drupal_system_listing('/^' . DRUPAL_PHP_FUNCTION_PATTERN . '\.module$/', 'modules', 'name', 0);
2363  
2364    // Include the installation profile in modules that are loaded.
2365    $profile = drupal_get_profile();
2366    $modules[$profile] = new stdClass();
2367    $modules[$profile]->name = $profile;
2368    $modules[$profile]->uri = 'profiles/' . $profile . '/' . $profile . '.profile';
2369    $modules[$profile]->filename = $profile . '.profile';
2370  
2371    // Installation profile hooks are always executed last.
2372    $modules[$profile]->weight = 1000;
2373  
2374    // Set defaults for module info.
2375    $defaults = array(
2376      'dependencies' => array(),
2377      'description' => '',
2378      'package' => 'Other',
2379      'version' => NULL,
2380      'php' => DRUPAL_MINIMUM_PHP,
2381      'files' => array(),
2382      'bootstrap' => 0,
2383    );
2384  
2385    // Read info files for each module.
2386    foreach ($modules as $key => $module) {
2387      // The module system uses the key 'filename' instead of 'uri' so copy the
2388      // value so it will be used by the modules system.
2389      $modules[$key]->filename = $module->uri;
2390  
2391      // Look for the info file.
2392      $module->info = drupal_parse_info_file(dirname($module->uri) . '/' . $module->name . '.info');
2393  
2394      // Skip modules that don't provide info.
2395      if (empty($module->info)) {
2396        unset($modules[$key]);
2397        continue;
2398      }
2399  
2400      // Merge in defaults and save.
2401      $modules[$key]->info = $module->info + $defaults;
2402  
2403      // Prefix stylesheets and scripts with module path.
2404      $path = dirname($module->uri);
2405      if (isset($module->info['stylesheets'])) {
2406        $module->info['stylesheets'] = _system_info_add_path($module->info['stylesheets'], $path);
2407      }
2408      if (isset($module->info['scripts'])) {
2409        $module->info['scripts'] = _system_info_add_path($module->info['scripts'], $path);
2410      }
2411  
2412      // Installation profiles are hidden by default, unless explicitly specified
2413      // otherwise in the .info file.
2414      if ($key == $profile && !isset($modules[$key]->info['hidden'])) {
2415        $modules[$key]->info['hidden'] = TRUE;
2416      }
2417  
2418      // Invoke hook_system_info_alter() to give installed modules a chance to
2419      // modify the data in the .info files if necessary.
2420      $type = 'module';
2421      drupal_alter('system_info', $modules[$key]->info, $modules[$key], $type);
2422    }
2423  
2424    if (isset($modules[$profile])) {
2425      // The installation profile is required, if it's a valid module.
2426      $modules[$profile]->info['required'] = TRUE;
2427      // Add a default distribution name if the profile did not provide one. This
2428      // matches the default value used in install_profile_info().
2429      if (!isset($modules[$profile]->info['distribution_name'])) {
2430        $modules[$profile]->info['distribution_name'] = 'Drupal';
2431      }
2432    }
2433  
2434    return $modules;
2435  }
2436  
2437  /**
2438   * Rebuild, save, and return data about all currently available modules.
2439   *
2440   * @return
2441   *   Array of all available modules and their data.
2442   */
2443  function system_rebuild_module_data() {
2444    $modules_cache = &drupal_static(__FUNCTION__);
2445    // Only rebuild once per request. $modules and $modules_cache cannot be
2446    // combined into one variable, because the $modules_cache variable is reset by
2447    // reference from system_list_reset() during the rebuild.
2448    if (!isset($modules_cache)) {
2449      $modules = _system_rebuild_module_data();
2450      ksort($modules);
2451      system_get_files_database($modules, 'module');
2452      system_update_files_database($modules, 'module');
2453      $modules = _module_build_dependencies($modules);
2454      $modules_cache = $modules;
2455    }
2456    return $modules_cache;
2457  }
2458  
2459  /**
2460   * Refresh bootstrap column in the system table.
2461   *
2462   * This is called internally by module_enable/disable() to flag modules that
2463   * implement hooks used during bootstrap, such as hook_boot(). These modules
2464   * are loaded earlier to invoke the hooks.
2465   */
2466  function _system_update_bootstrap_status() {
2467    $bootstrap_modules = array();
2468    foreach (bootstrap_hooks() as $hook) {
2469      foreach (module_implements($hook) as $module) {
2470        $bootstrap_modules[] = $module;
2471      }
2472    }
2473    $query = db_update('system')->fields(array('bootstrap' => 0));
2474    if ($bootstrap_modules) {
2475      db_update('system')
2476        ->fields(array('bootstrap' => 1))
2477        ->condition('name', $bootstrap_modules, 'IN')
2478        ->execute();
2479      $query->condition('name', $bootstrap_modules, 'NOT IN');
2480    }
2481    $query->execute();
2482    // Reset the cached list of bootstrap modules.
2483    system_list_reset();
2484  }
2485  
2486  /**
2487   * Helper function to scan and collect theme .info data and their engines.
2488   *
2489   * @return
2490   *   An associative array of themes information.
2491   */
2492  function _system_rebuild_theme_data() {
2493    // Find themes
2494    $themes = drupal_system_listing('/^' . DRUPAL_PHP_FUNCTION_PATTERN . '\.info$/', 'themes');
2495    // Allow modules to add further themes.
2496    if ($module_themes = module_invoke_all('system_theme_info')) {
2497      foreach ($module_themes as $name => $uri) {
2498        // @see file_scan_directory()
2499        $themes[$name] = (object) array(
2500          'uri' => $uri,
2501          'filename' => pathinfo($uri, PATHINFO_FILENAME),
2502          'name' => $name,
2503        );
2504      }
2505    }
2506  
2507    // Find theme engines
2508    $engines = drupal_system_listing('/^' . DRUPAL_PHP_FUNCTION_PATTERN . '\.engine$/', 'themes/engines');
2509  
2510    // Set defaults for theme info.
2511    $defaults = array(
2512      'engine' => 'phptemplate',
2513      'regions' => array(
2514        'sidebar_first' => 'Left sidebar',
2515        'sidebar_second' => 'Right sidebar',
2516        'content' => 'Content',
2517        'header' => 'Header',
2518        'footer' => 'Footer',
2519        'highlighted' => 'Highlighted',
2520        'help' => 'Help',
2521        'page_top' => 'Page top',
2522        'page_bottom' => 'Page bottom',
2523      ),
2524      'description' => '',
2525      'features' => _system_default_theme_features(),
2526      'screenshot' => 'screenshot.png',
2527      'php' => DRUPAL_MINIMUM_PHP,
2528      'stylesheets' => array(),
2529      'scripts' => array(),
2530    );
2531  
2532    $sub_themes = array();
2533    // Read info files for each theme
2534    foreach ($themes as $key => $theme) {
2535      $themes[$key]->filename = $theme->uri;
2536      $themes[$key]->info = drupal_parse_info_file($theme->uri) + $defaults;
2537  
2538      // Invoke hook_system_info_alter() to give installed modules a chance to
2539      // modify the data in the .info files if necessary.
2540      $type = 'theme';
2541      drupal_alter('system_info', $themes[$key]->info, $themes[$key], $type);
2542  
2543      if (!empty($themes[$key]->info['base theme'])) {
2544        $sub_themes[] = $key;
2545      }
2546      if ($themes[$key]->info['engine'] == 'theme') {
2547        $filename = dirname($themes[$key]->uri) . '/' . $themes[$key]->name . '.theme';
2548        if (file_exists($filename)) {
2549          $themes[$key]->owner = $filename;
2550          $themes[$key]->prefix = $key;
2551        }
2552      }
2553      else {
2554        $engine = $themes[$key]->info['engine'];
2555        if (isset($engines[$engine])) {
2556          $themes[$key]->owner = $engines[$engine]->uri;
2557          $themes[$key]->prefix = $engines[$engine]->name;
2558          $themes[$key]->template = TRUE;
2559        }
2560      }
2561  
2562      // Prefix stylesheets and scripts with module path.
2563      $path = dirname($theme->uri);
2564      $theme->info['stylesheets'] = _system_info_add_path($theme->info['stylesheets'], $path);
2565      $theme->info['scripts'] = _system_info_add_path($theme->info['scripts'], $path);
2566  
2567      // Give the screenshot proper path information.
2568      if (!empty($themes[$key]->info['screenshot'])) {
2569        $themes[$key]->info['screenshot'] = $path . '/' . $themes[$key]->info['screenshot'];
2570      }
2571    }
2572  
2573    // Now that we've established all our master themes, go back and fill in data
2574    // for subthemes.
2575    foreach ($sub_themes as $key) {
2576      $themes[$key]->base_themes = drupal_find_base_themes($themes, $key);
2577      // Don't proceed if there was a problem with the root base theme.
2578      if (!current($themes[$key]->base_themes)) {
2579        continue;
2580      }
2581      $base_key = key($themes[$key]->base_themes);
2582      foreach (array_keys($themes[$key]->base_themes) as $base_theme) {
2583        $themes[$base_theme]->sub_themes[$key] = $themes[$key]->info['name'];
2584      }
2585      // Copy the 'owner' and 'engine' over if the top level theme uses a theme
2586      // engine.
2587      if (isset($themes[$base_key]->owner)) {
2588        if (isset($themes[$base_key]->info['engine'])) {
2589          $themes[$key]->info['engine'] = $themes[$base_key]->info['engine'];
2590          $themes[$key]->owner = $themes[$base_key]->owner;
2591          $themes[$key]->prefix = $themes[$base_key]->prefix;
2592        }
2593        else {
2594          $themes[$key]->prefix = $key;
2595        }
2596      }
2597    }
2598  
2599    return $themes;
2600  }
2601  
2602  /**
2603   * Rebuild, save, and return data about all currently available themes.
2604   *
2605   * @return
2606   *   Array of all available themes and their data.
2607   */
2608  function system_rebuild_theme_data() {
2609    $themes = _system_rebuild_theme_data();
2610    ksort($themes);
2611    system_get_files_database($themes, 'theme');
2612    system_update_files_database($themes, 'theme');
2613    return $themes;
2614  }
2615  
2616  /**
2617   * Prefixes all values in an .info file array with a given path.
2618   *
2619   * This helper function is mainly used to prefix all array values of an .info
2620   * file property with a single given path (to the module or theme); e.g., to
2621   * prefix all values of the 'stylesheets' or 'scripts' properties with the file
2622   * path to the defining module/theme.
2623   *
2624   * @param $info
2625   *   A nested array of data of an .info file to be processed.
2626   * @param $path
2627   *   A file path to prepend to each value in $info.
2628   *
2629   * @return
2630   *   The $info array with prefixed values.
2631   *
2632   * @see _system_rebuild_module_data()
2633   * @see _system_rebuild_theme_data()
2634   */
2635  function _system_info_add_path($info, $path) {
2636    foreach ($info as $key => $value) {
2637      // Recurse into nested values until we reach the deepest level.
2638      if (is_array($value)) {
2639        $info[$key] = _system_info_add_path($info[$key], $path);
2640      }
2641      // Unset the original value's key and set the new value with prefix, using
2642      // the original value as key, so original values can still be looked up.
2643      else {
2644        unset($info[$key]);
2645        $info[$value] = $path . '/' . $value;
2646      }
2647    }
2648    return $info;
2649  }
2650  
2651  /**
2652   * Returns an array of default theme features.
2653   */
2654  function _system_default_theme_features() {
2655    return array(
2656      'logo',
2657      'favicon',
2658      'name',
2659      'slogan',
2660      'node_user_picture',
2661      'comment_user_picture',
2662      'comment_user_verification',
2663      'main_menu',
2664      'secondary_menu',
2665    );
2666  }
2667  
2668  /**
2669   * Find all the base themes for the specified theme.
2670   *
2671   * This function has been deprecated in favor of drupal_find_base_themes().
2672   */
2673  function system_find_base_themes($themes, $key, $used_keys = array()) {
2674    return drupal_find_base_themes($themes, $key, $used_keys);
2675  }
2676  
2677  /**
2678   * Get a list of available regions from a specified theme.
2679   *
2680   * @param $theme_key
2681   *   The name of a theme.
2682   * @param $show
2683   *   Possible values: REGIONS_ALL or REGIONS_VISIBLE. Visible excludes hidden
2684   *   regions.
2685   * @return
2686   *   An array of regions in the form $region['name'] = 'description'.
2687   */
2688  function system_region_list($theme_key, $show = REGIONS_ALL) {
2689    $themes = list_themes();
2690    if (!isset($themes[$theme_key])) {
2691      return array();
2692    }
2693  
2694    $list = array();
2695    $info = $themes[$theme_key]->info;
2696    // If requested, suppress hidden regions. See block_admin_display_form().
2697    foreach ($info['regions'] as $name => $label) {
2698      if ($show == REGIONS_ALL || !isset($info['regions_hidden']) || !in_array($name, $info['regions_hidden'])) {
2699        $list[$name] = t($label);
2700      }
2701    }
2702  
2703    return $list;
2704  }
2705  
2706  /**
2707   * Implements hook_system_info_alter().
2708   */
2709  function system_system_info_alter(&$info, $file, $type) {
2710    // Remove page-top and page-bottom from the blocks UI since they are reserved for
2711    // modules to populate from outside the blocks system.
2712    if ($type == 'theme') {
2713      $info['regions_hidden'][] = 'page_top';
2714      $info['regions_hidden'][] = 'page_bottom';
2715    }
2716  }
2717  
2718  /**
2719   * Get the name of the default region for a given theme.
2720   *
2721   * @param $theme
2722   *   The name of a theme.
2723   * @return
2724   *   A string that is the region name.
2725   */
2726  function system_default_region($theme) {
2727    $regions = array_keys(system_region_list($theme, REGIONS_VISIBLE));
2728    return isset($regions[0]) ? $regions[0] : '';
2729  }
2730  
2731  /**
2732   * Add default buttons to a form and set its prefix.
2733   *
2734   * @param $form
2735   *   An associative array containing the structure of the form.
2736   *
2737   * @return
2738   *   The form structure.
2739   *
2740   * @see system_settings_form_submit()
2741   * @ingroup forms
2742   */
2743  function system_settings_form($form) {
2744    $form['actions']['#type'] = 'actions';
2745    $form['actions']['submit'] = array('#type' => 'submit', '#value' => t('Save configuration'));
2746  
2747    if (!empty($_POST) && form_get_errors()) {
2748      drupal_set_message(t('The settings have not been saved because of the errors.'), 'error');
2749    }
2750    $form['#submit'][] = 'system_settings_form_submit';
2751    // By default, render the form using theme_system_settings_form().
2752    if (!isset($form['#theme'])) {
2753      $form['#theme'] = 'system_settings_form';
2754    }
2755    return $form;
2756  }
2757  
2758  /**
2759   * Execute the system_settings_form.
2760   *
2761   * If you want node type configure style handling of your checkboxes,
2762   * add an array_filter value to your form.
2763   */
2764  function system_settings_form_submit($form, &$form_state) {
2765    // Exclude unnecessary elements.
2766    form_state_values_clean($form_state);
2767  
2768    foreach ($form_state['values'] as $key => $value) {
2769      if (is_array($value) && isset($form_state['values']['array_filter'])) {
2770        $value = array_keys(array_filter($value));
2771      }
2772      variable_set($key, $value);
2773    }
2774  
2775    drupal_set_message(t('The configuration options have been saved.'));
2776  }
2777  
2778  /**
2779   * Helper function to sort requirements.
2780   */
2781  function _system_sort_requirements($a, $b) {
2782    if (!isset($a['weight'])) {
2783      if (!isset($b['weight'])) {
2784        return strcmp($a['title'], $b['title']);
2785      }
2786      return -$b['weight'];
2787    }
2788    return isset($b['weight']) ? $a['weight'] - $b['weight'] : $a['weight'];
2789  }
2790  
2791  /**
2792   * Generates a form array for a confirmation form.
2793   *
2794   * This function returns a complete form array for confirming an action. The
2795   * form contains a confirm button as well as a cancellation link that allows a
2796   * user to abort the action.
2797   *
2798   * If the submit handler for a form that implements confirm_form() is invoked,
2799   * the user successfully confirmed the action. You should never directly
2800   * inspect $_POST to see if an action was confirmed.
2801   *
2802   * Note - if the parameters $question, $description, $yes, or $no could contain
2803   * any user input (such as node titles or taxonomy terms), it is the
2804   * responsibility of the code calling confirm_form() to sanitize them first with
2805   * a function like check_plain() or filter_xss().
2806   *
2807   * @param $form
2808   *   Additional elements to add to the form. These can be regular form elements,
2809   *   #value elements, etc., and their values will be available to the submit
2810   *   handler.
2811   * @param $question
2812   *   The question to ask the user (e.g. "Are you sure you want to delete the
2813   *   block <em>foo</em>?"). The page title will be set to this value.
2814   * @param $path
2815   *   The page to go to if the user cancels the action. This can be either:
2816   *   - A string containing a Drupal path.
2817   *   - An associative array with a 'path' key. Additional array values are
2818   *     passed as the $options parameter to l().
2819   *   If the 'destination' query parameter is set in the URL when viewing a
2820   *   confirmation form, that value will be used instead of $path.
2821   * @param $description
2822   *   Additional text to display. Defaults to t('This action cannot be undone.').
2823   * @param $yes
2824   *   A caption for the button that confirms the action (e.g. "Delete",
2825   *   "Replace", ...). Defaults to t('Confirm').
2826   * @param $no
2827   *   A caption for the link which cancels the action (e.g. "Cancel"). Defaults
2828   *   to t('Cancel').
2829   * @param $name
2830   *   The internal name used to refer to the confirmation item.
2831   *
2832   * @return
2833   *   The form array.
2834   */
2835  function confirm_form($form, $question, $path, $description = NULL, $yes = NULL, $no = NULL, $name = 'confirm') {
2836    $description = isset($description) ? $description : t('This action cannot be undone.');
2837  
2838    // Prepare cancel link.
2839    if (isset($_GET['destination'])) {
2840      $options = drupal_parse_url(urldecode($_GET['destination']));
2841    }
2842    elseif (is_array($path)) {
2843      $options = $path;
2844    }
2845    else {
2846      $options = array('path' => $path);
2847    }
2848  
2849    drupal_set_title($question, PASS_THROUGH);
2850  
2851    $form['#attributes']['class'][] = 'confirmation';
2852    $form['description'] = array('#markup' => $description);
2853    $form[$name] = array('#type' => 'hidden', '#value' => 1);
2854  
2855    $form['actions'] = array('#type' => 'actions');
2856    $form['actions']['submit'] = array(
2857      '#type' => 'submit',
2858      '#value' => $yes ? $yes : t('Confirm'),
2859    );
2860    $form['actions']['cancel'] = array(
2861      '#type' => 'link',
2862      '#title' => $no ? $no : t('Cancel'),
2863      '#href' => $options['path'],
2864      '#options' => $options,
2865    );
2866    // By default, render the form using theme_confirm_form().
2867    if (!isset($form['#theme'])) {
2868      $form['#theme'] = 'confirm_form';
2869    }
2870    return $form;
2871  }
2872  
2873  /**
2874   * Determines whether the current user is in compact mode.
2875   *
2876   * Compact mode shows certain administration pages with less description text,
2877   * such as the configuration page and the permissions page.
2878   *
2879   * Whether the user is in compact mode is determined by a cookie, which is set
2880   * for the user by system_admin_compact_page().
2881   *
2882   * If the user does not have the cookie, the default value is given by the
2883   * system variable 'admin_compact_mode', which itself defaults to FALSE. This
2884   * does not have a user interface to set it: it is a hidden variable which can
2885   * be set in the settings.php file.
2886   *
2887   * @return
2888   *   TRUE when in compact mode, FALSE when in expanded mode.
2889   */
2890  function system_admin_compact_mode() {
2891    // PHP converts dots into underscores in cookie names to avoid problems with
2892    // its parser, so we use a converted cookie name.
2893    return isset($_COOKIE['Drupal_visitor_admin_compact_mode']) ? $_COOKIE['Drupal_visitor_admin_compact_mode'] : variable_get('admin_compact_mode', FALSE);
2894  }
2895  
2896  /**
2897   * Menu callback; Sets whether the admin menu is in compact mode or not.
2898   *
2899   * @param $mode
2900   *   Valid values are 'on' and 'off'.
2901   */
2902  function system_admin_compact_page($mode = 'off') {
2903    user_cookie_save(array('admin_compact_mode' => ($mode == 'on')));
2904    drupal_goto();
2905  }
2906  
2907  /**
2908   * Generate a list of tasks offered by a specified module.
2909   *
2910   * @param $module
2911   *   Module name.
2912   * @param $info
2913   *   The module's information, as provided by system_get_info().
2914   *
2915   * @return
2916   *   An array of task links.
2917   */
2918  function system_get_module_admin_tasks($module, $info) {
2919    $links = &drupal_static(__FUNCTION__);
2920  
2921    if (!isset($links)) {
2922      $links = array();
2923      $query = db_select('menu_links', 'ml', array('fetch' => PDO::FETCH_ASSOC));
2924      $query->join('menu_router', 'm', 'm.path = ml.router_path');
2925      $query
2926        ->fields('ml')
2927        // Weight should be taken from {menu_links}, not {menu_router}.
2928        ->fields('m', array_diff(drupal_schema_fields_sql('menu_router'), array('weight')))
2929        ->condition('ml.link_path', 'admin/%', 'LIKE')
2930        ->condition('ml.hidden', 0, '>=')
2931        ->condition('ml.module', 'system')
2932        ->condition('m.number_parts', 1, '>')
2933        ->condition('m.page_callback', 'system_admin_menu_block_page', '<>');
2934      foreach ($query->execute() as $link) {
2935        _menu_link_translate($link);
2936        if ($link['access']) {
2937          $links[$link['router_path']] = $link;
2938        }
2939      }
2940    }
2941  
2942    $admin_tasks = array();
2943    $titles = array();
2944    if ($menu = module_invoke($module, 'menu')) {
2945      foreach ($menu as $path => $item) {
2946        if (isset($links[$path])) {
2947          $task = $links[$path];
2948          // The link description, either derived from 'description' in
2949          // hook_menu() or customized via menu module is used as title attribute.
2950          if (!empty($task['localized_options']['attributes']['title'])) {
2951            $task['description'] = $task['localized_options']['attributes']['title'];
2952            unset($task['localized_options']['attributes']['title']);
2953          }
2954  
2955          // Check the admin tasks for duplicate names. If one is found,
2956          // append the parent menu item's title to differentiate.
2957          $duplicate_path = array_search($task['title'], $titles);
2958          if ($duplicate_path !== FALSE) {
2959            if ($parent = menu_link_load($task['plid'])) {
2960              // Append the parent item's title to this task's title.
2961              $task['title'] = t('@original_title (@parent_title)', array('@original_title' => $task['title'], '@parent_title' => $parent['title']));
2962            }
2963            if ($parent = menu_link_load($admin_tasks[$duplicate_path]['plid'])) {
2964              // Append the parent item's title to the duplicated task's title.
2965              // We use $links[$duplicate_path] in case there are triplicates.
2966              $admin_tasks[$duplicate_path]['title'] = t('@original_title (@parent_title)', array('@original_title' => $links[$duplicate_path]['title'], '@parent_title' => $parent['title']));
2967            }
2968          }
2969          else {
2970            $titles[$path] = $task['title'];
2971          }
2972  
2973          $admin_tasks[$path] = $task;
2974        }
2975      }
2976    }
2977  
2978    // Append link for permissions.
2979    if (module_hook($module, 'permission')) {
2980      $item = menu_get_item('admin/people/permissions');
2981      if (!empty($item['access'])) {
2982        $item['link_path'] = $item['href'];
2983        $item['title'] = t('Configure @module permissions', array('@module' => $info['name']));
2984        unset($item['description']);
2985        $item['localized_options']['fragment'] = 'module-' . $module;
2986        $admin_tasks["admin/people/permissions#module-$module"] = $item;
2987      }
2988    }
2989  
2990    return $admin_tasks;
2991  }
2992  
2993  /**
2994   * Implements hook_cron().
2995   *
2996   * Remove older rows from flood and batch table. Remove old temporary files.
2997   */
2998  function system_cron() {
2999    // Cleanup the flood.
3000    db_delete('flood')
3001      ->condition('expiration', REQUEST_TIME, '<')
3002      ->execute();
3003  
3004    // Remove temporary files that are older than DRUPAL_MAXIMUM_TEMP_FILE_AGE.
3005    // Use separate placeholders for the status to avoid a bug in some versions
3006    // of PHP. See http://drupal.org/node/352956.
3007    $result = db_query('SELECT fid FROM {file_managed} WHERE status <> :permanent AND timestamp < :timestamp', array(
3008      ':permanent' => FILE_STATUS_PERMANENT,
3009      ':timestamp' => REQUEST_TIME - DRUPAL_MAXIMUM_TEMP_FILE_AGE
3010    ));
3011    foreach ($result as $row) {
3012      if ($file = file_load($row->fid)) {
3013        $references = file_usage_list($file);
3014        if (empty($references)) {
3015          if (!file_delete($file)) {
3016            watchdog('file system', 'Could not delete temporary file "%path" during garbage collection', array('%path' => $file->uri), WATCHDOG_ERROR);
3017          }
3018        }
3019        else {
3020          watchdog('file system', 'Did not delete temporary file "%path" during garbage collection, because it is in use by the following modules: %modules.', array('%path' => $file->uri, '%modules' => implode(', ', array_keys($references))), WATCHDOG_INFO);
3021        }
3022      }
3023    }
3024  
3025    $core = array('cache', 'cache_path', 'cache_filter', 'cache_page', 'cache_form', 'cache_menu');
3026    $cache_tables = array_merge(module_invoke_all('flush_caches'), $core);
3027    foreach ($cache_tables as $table) {
3028      cache_clear_all(NULL, $table);
3029    }
3030  
3031    // Cleanup the batch table and the queue for failed batches.
3032    db_delete('batch')
3033      ->condition('timestamp', REQUEST_TIME - 864000, '<')
3034      ->execute();
3035    db_delete('queue')
3036      ->condition('created', REQUEST_TIME - 864000, '<')
3037      ->condition('name', 'drupal_batch:%', 'LIKE')
3038      ->execute();
3039  
3040    // Reset expired items in the default queue implementation table. If that's
3041    // not used, this will simply be a no-op.
3042    db_update('queue')
3043      ->fields(array(
3044        'expire' => 0,
3045      ))
3046      ->condition('expire', 0, '<>')
3047      ->condition('expire', REQUEST_TIME, '<')
3048      ->execute();
3049  }
3050  
3051  /**
3052   * Implements hook_flush_caches().
3053   */
3054  function system_flush_caches() {
3055    // Rebuild list of date formats.
3056    system_date_formats_rebuild();
3057    // Reset the menu static caches.
3058    menu_reset_static_cache();
3059  }
3060  
3061  /**
3062   * Implements hook_action_info().
3063   */
3064  function system_action_info() {
3065    return array(
3066      'system_message_action' => array(
3067        'type' => 'system',
3068        'label' => t('Display a message to the user'),
3069        'configurable' => TRUE,
3070        'triggers' => array('any'),
3071      ),
3072      'system_send_email_action' => array(
3073        'type' => 'system',
3074        'label' => t('Send e-mail'),
3075        'configurable' => TRUE,
3076        'triggers' => array('any'),
3077      ),
3078      'system_block_ip_action' => array(
3079        'type' => 'user',
3080        'label' => t('Ban IP address of current user'),
3081        'configurable' => FALSE,
3082        'triggers' => array('any'),
3083      ),
3084      'system_goto_action' => array(
3085        'type' => 'system',
3086        'label' => t('Redirect to URL'),
3087        'configurable' => TRUE,
3088        'triggers' => array('any'),
3089      ),
3090    );
3091  }
3092  
3093  /**
3094   * Return a form definition so the Send email action can be configured.
3095   *
3096   * @param $context
3097   *   Default values (if we are editing an existing action instance).
3098   *
3099   * @return
3100   *   Form definition.
3101   *
3102   * @see system_send_email_action_validate()
3103   * @see system_send_email_action_submit()
3104   */
3105  function system_send_email_action_form($context) {
3106    // Set default values for form.
3107    if (!isset($context['recipient'])) {
3108      $context['recipient'] = '';
3109    }
3110    if (!isset($context['subject'])) {
3111      $context['subject'] = '';
3112    }
3113    if (!isset($context['message'])) {
3114      $context['message'] = '';
3115    }
3116  
3117    $form['recipient'] = array(
3118      '#type' => 'textfield',
3119      '#title' => t('Recipient'),
3120      '#default_value' => $context['recipient'],
3121      '#maxlength' => '254',
3122      '#description' => t('The email address to which the message should be sent OR enter [node:author:mail], [comment:author:mail], etc. if you would like to send an e-mail to the author of the original post.'),
3123    );
3124    $form['subject'] = array(
3125      '#type' => 'textfield',
3126      '#title' => t('Subject'),
3127      '#default_value' => $context['subject'],
3128      '#maxlength' => '254',
3129      '#description' => t('The subject of the message.'),
3130    );
3131    $form['message'] = array(
3132      '#type' => 'textarea',
3133      '#title' => t('Message'),
3134      '#default_value' => $context['message'],
3135      '#cols' => '80',
3136      '#rows' => '20',
3137      '#description' => t('The message that should be sent. You may include placeholders like [node:title], [user:name], and [comment:body] to represent data that will be different each time message is sent. Not all placeholders will be available in all contexts.'),
3138    );
3139    return $form;
3140  }
3141  
3142  /**
3143   * Validate system_send_email_action form submissions.
3144   */
3145  function system_send_email_action_validate($form, $form_state) {
3146    $form_values = $form_state['values'];
3147    // Validate the configuration form.
3148    if (!valid_email_address($form_values['recipient']) && strpos($form_values['recipient'], ':mail') === FALSE) {
3149      // We want the literal %author placeholder to be emphasized in the error message.
3150      form_set_error('recipient', t('Enter a valid email address or use a token e-mail address such as %author.', array('%author' => '[node:author:mail]')));
3151    }
3152  }
3153  
3154  /**
3155   * Process system_send_email_action form submissions.
3156   */
3157  function system_send_email_action_submit($form, $form_state) {
3158    $form_values = $form_state['values'];
3159    // Process the HTML form to store configuration. The keyed array that
3160    // we return will be serialized to the database.
3161    $params = array(
3162      'recipient' => $form_values['recipient'],
3163      'subject'   => $form_values['subject'],
3164      'message'   => $form_values['message'],
3165    );
3166    return $params;
3167  }
3168  
3169  /**
3170   * Sends an e-mail message.
3171   *
3172   * @param object $entity
3173   *   An optional node object, which will be added as $context['node'] if
3174   *   provided.
3175   * @param array $context
3176   *   Array with the following elements:
3177   *   - 'recipient': E-mail message recipient. This will be passed through
3178   *     token_replace().
3179   *   - 'subject': The subject of the message. This will be passed through
3180   *     token_replace().
3181   *   - 'message': The message to send. This will be passed through
3182   *     token_replace().
3183   *   - Other elements will be used as the data for token replacement.
3184   *
3185   * @ingroup actions
3186   */
3187  function system_send_email_action($entity, $context) {
3188    if (empty($context['node'])) {
3189      $context['node'] = $entity;
3190    }
3191  
3192    $recipient = token_replace($context['recipient'], $context);
3193  
3194    // If the recipient is a registered user with a language preference, use
3195    // the recipient's preferred language. Otherwise, use the system default
3196    // language.
3197    $recipient_account = user_load_by_mail($recipient);
3198    if ($recipient_account) {
3199      $language = user_preferred_language($recipient_account);
3200    }
3201    else {
3202      $language = language_default();
3203    }
3204    $params = array('context' => $context);
3205  
3206    if (drupal_mail('system', 'action_send_email', $recipient, $language, $params)) {
3207      watchdog('action', 'Sent email to %recipient', array('%recipient' => $recipient));
3208    }
3209    else {
3210      watchdog('error', 'Unable to send email to %recipient', array('%recipient' => $recipient));
3211    }
3212  }
3213  
3214  /**
3215   * Implements hook_mail().
3216   */
3217  function system_mail($key, &$message, $params) {
3218    $context = $params['context'];
3219  
3220    $subject = token_replace($context['subject'], $context);
3221    $body = token_replace($context['message'], $context);
3222  
3223    $message['subject'] .= str_replace(array("\r", "\n"), '', $subject);
3224    $message['body'][] = $body;
3225  }
3226  
3227  function system_message_action_form($context) {
3228    $form['message'] = array(
3229      '#type' => 'textarea',
3230      '#title' => t('Message'),
3231      '#default_value' => isset($context['message']) ? $context['message'] : '',
3232      '#required' => TRUE,
3233      '#rows' => '8',
3234      '#description' => t('The message to be displayed to the current user. You may include placeholders like [node:title], [user:name], and [comment:body] to represent data that will be different each time message is sent. Not all placeholders will be available in all contexts.'),
3235    );
3236    return $form;
3237  }
3238  
3239  function system_message_action_submit($form, $form_state) {
3240    return array('message' => $form_state['values']['message']);
3241  }
3242  
3243  /**
3244   * Sends a message to the current user's screen.
3245   *
3246   * @param object $entity
3247   *   An optional node object, which will be added as $context['node'] if
3248   *   provided.
3249   * @param array $context
3250   *   Array with the following elements:
3251   *   - 'message': The message to send. This will be passed through
3252   *     token_replace().
3253   *   - Other elements will be used as the data for token replacement in
3254   *     the message.
3255   *
3256   * @ingroup actions
3257   */
3258  function system_message_action(&$entity, $context = array()) {
3259    if (empty($context['node'])) {
3260      $context['node'] = $entity;
3261    }
3262  
3263    $context['message'] = token_replace(filter_xss_admin($context['message']), $context);
3264    drupal_set_message($context['message']);
3265  }
3266  
3267  /**
3268   * Settings form for system_goto_action().
3269   */
3270  function system_goto_action_form($context) {
3271    $form['url'] = array(
3272      '#type' => 'textfield',
3273      '#title' => t('URL'),
3274      '#description' => t('The URL to which the user should be redirected. This can be an internal URL like node/1234 or an external URL like http://drupal.org.'),
3275      '#default_value' => isset($context['url']) ? $context['url'] : '',
3276      '#required' => TRUE,
3277    );
3278    return $form;
3279  }
3280  
3281  function system_goto_action_submit($form, $form_state) {
3282    return array(
3283      'url' => $form_state['values']['url']
3284    );
3285  }
3286  
3287  /**
3288   * Redirects to a different URL.
3289   *
3290   * @param $entity
3291   *   Ignored.
3292   * @param array $context
3293   *   Array with the following elements:
3294   *   - 'url': URL to redirect to. This will be passed through
3295   *     token_replace().
3296   *   - Other elements will be used as the data for token replacement.
3297   *
3298   * @ingroup actions
3299   */
3300  function system_goto_action($entity, $context) {
3301    drupal_goto(token_replace($context['url'], $context));
3302  }
3303  
3304  /**
3305   * Blocks the current user's IP address.
3306   *
3307   * @ingroup actions
3308   */
3309  function system_block_ip_action() {
3310    $ip = ip_address();
3311    db_insert('blocked_ips')
3312      ->fields(array('ip' => $ip))
3313      ->execute();
3314    watchdog('action', 'Banned IP address %ip', array('%ip' => $ip));
3315  }
3316  
3317  /**
3318   * Generate an array of time zones and their local time&date.
3319   *
3320   * @param $blank
3321   *   If evaluates true, prepend an empty time zone option to the array.
3322   */
3323  function system_time_zones($blank = NULL) {
3324    $zonelist = timezone_identifiers_list();
3325    $zones = $blank ? array('' => t('- None selected -')) : array();
3326    foreach ($zonelist as $zone) {
3327      // Because many time zones exist in PHP only for backward compatibility
3328      // reasons and should not be used, the list is filtered by a regular
3329      // expression.
3330      if (preg_match('!^((Africa|America|Antarctica|Arctic|Asia|Atlantic|Australia|Europe|Indian|Pacific)/|UTC$)!', $zone)) {
3331        $zones[$zone] = t('@zone: @date', array('@zone' => t(str_replace('_', ' ', $zone)), '@date' => format_date(REQUEST_TIME, 'custom', variable_get('date_format_long', 'l, F j, Y - H:i') . ' O', $zone)));
3332      }
3333    }
3334    // Sort the translated time zones alphabetically.
3335    asort($zones);
3336    return $zones;
3337  }
3338  
3339  /**
3340   * Checks whether the server is capable of issuing HTTP requests.
3341   *
3342   * The function sets the drupal_http_request_fail system variable to TRUE if
3343   * drupal_http_request() does not work and then the system status report page
3344   * will contain an error.
3345   *
3346   * @return
3347   *  TRUE if this installation can issue HTTP requests.
3348   */
3349  function system_check_http_request() {
3350    // Try to get the content of the front page via drupal_http_request().
3351    $result = drupal_http_request(url('', array('absolute' => TRUE)), array('max_redirects' => 0));
3352    // We only care that we get a http response - this means that Drupal
3353    // can make a http request.
3354    $works = isset($result->code) && ($result->code >= 100) && ($result->code < 600);
3355    variable_set('drupal_http_request_fails', !$works);
3356    return $works;
3357  }
3358  
3359  /**
3360   * Menu callback; Retrieve a JSON object containing a suggested time zone name.
3361   */
3362  function system_timezone($abbreviation = '', $offset = -1, $is_daylight_saving_time = NULL) {
3363    // An abbreviation of "0" passed in the callback arguments should be
3364    // interpreted as the empty string.
3365    $abbreviation = $abbreviation ? $abbreviation : '';
3366    $timezone = timezone_name_from_abbr($abbreviation, intval($offset), $is_daylight_saving_time);
3367    drupal_json_output($timezone);
3368  }
3369  
3370  /**
3371   * Returns HTML for the Powered by Drupal text.
3372   *
3373   * @ingroup themeable
3374   */
3375  function theme_system_powered_by() {
3376    return '<span>' . t('Powered by <a href="@poweredby">Drupal</a>', array('@poweredby' => 'http://drupal.org')) . '</span>';
3377  }
3378  
3379  /**
3380   * Returns HTML for a link to show or hide inline help descriptions.
3381   *
3382   * @ingroup themeable
3383   */
3384  function theme_system_compact_link() {
3385    $output = '<div class="compact-link">';
3386    if (system_admin_compact_mode()) {
3387      $output .= l(t('Show descriptions'), 'admin/compact/off', array('attributes' => array('title' => t('Expand layout to include descriptions.')), 'query' => drupal_get_destination()));
3388    }
3389    else {
3390      $output .= l(t('Hide descriptions'), 'admin/compact/on', array('attributes' => array('title' => t('Compress layout by hiding descriptions.')), 'query' => drupal_get_destination()));
3391    }
3392    $output .= '</div>';
3393  
3394    return $output;
3395  }
3396  
3397  /**
3398   * Implements hook_image_toolkits().
3399   */
3400  function system_image_toolkits() {
3401    include_once DRUPAL_ROOT . '/' . drupal_get_path('module', 'system') . '/' . 'image.gd.inc';
3402    return array(
3403      'gd' => array(
3404        'title' => t('GD2 image manipulation toolkit'),
3405        'available' => function_exists('image_gd_check_settings') && image_gd_check_settings(),
3406      ),
3407    );
3408  }
3409  
3410  /**
3411   * Attempts to get a file using drupal_http_request and to store it locally.
3412   *
3413   * @param $url
3414   *   The URL of the file to grab.
3415   *
3416   * @param $destination
3417   *   Stream wrapper URI specifying where the file should be placed. If a
3418   *   directory path is provided, the file is saved into that directory under
3419   *   its original name. If the path contains a filename as well, that one will
3420   *   be used instead.
3421   *   If this value is omitted, the site's default files scheme will be used,
3422   *   usually "public://".
3423   *
3424   * @param $managed boolean
3425   *   If this is set to TRUE, the file API hooks will be invoked and the file is
3426   *   registered in the database.
3427   *
3428   * @param $replace boolean
3429   *   Replace behavior when the destination file already exists:
3430   *   - FILE_EXISTS_REPLACE: Replace the existing file.
3431   *   - FILE_EXISTS_RENAME: Append _{incrementing number} until the filename is
3432   *     unique.
3433   *   - FILE_EXISTS_ERROR: Do nothing and return FALSE.
3434   *
3435   * @return
3436   *   On success the location the file was saved to, FALSE on failure.
3437   */
3438  function system_retrieve_file($url, $destination = NULL, $managed = FALSE, $replace = FILE_EXISTS_RENAME) {
3439    $parsed_url = parse_url($url);
3440    if (!isset($destination)) {
3441      $path = file_build_uri(drupal_basename($parsed_url['path']));
3442    }
3443    else {
3444      if (is_dir(drupal_realpath($destination))) {
3445        // Prevent URIs with triple slashes when glueing parts together.
3446        $path = str_replace('///', '//', "$destination/") . drupal_basename($parsed_url['path']);
3447      }
3448      else {
3449        $path = $destination;
3450      }
3451    }
3452    $result = drupal_http_request($url);
3453    if ($result->code != 200) {
3454      drupal_set_message(t('HTTP error @errorcode occurred when trying to fetch @remote.', array('@errorcode' => $result->code, '@remote' => $url)), 'error');
3455      return FALSE;
3456    }
3457    $local = $managed ? file_save_data($result->data, $path, $replace) : file_unmanaged_save_data($result->data, $path, $replace);
3458    if (!$local) {
3459      drupal_set_message(t('@remote could not be saved to @path.', array('@remote' => $url, '@path' => $path)), 'error');
3460    }
3461  
3462    return $local;
3463  }
3464  
3465  /**
3466   * Implements hook_page_alter().
3467   */
3468  function system_page_alter(&$page) {
3469    // Find all non-empty page regions, and add a theme wrapper function that
3470    // allows them to be consistently themed.
3471    $regions = system_region_list($GLOBALS['theme']);
3472    foreach (array_keys($regions) as $region) {
3473      if (!empty($page[$region])) {
3474        $page[$region]['#theme_wrappers'][] = 'region';
3475        $page[$region]['#region'] = $region;
3476      }
3477    }
3478  }
3479  
3480  /**
3481   * Run the automated cron if enabled.
3482   */
3483  function system_run_automated_cron() {
3484    // If the site is not fully installed, suppress the automated cron run.
3485    // Otherwise it could be triggered prematurely by Ajax requests during
3486    // installation.
3487    if (($threshold = variable_get('cron_safe_threshold', DRUPAL_CRON_DEFAULT_THRESHOLD)) > 0 && variable_get('install_task') == 'done') {
3488      $cron_last = variable_get('cron_last', NULL);
3489      if (!isset($cron_last) || (REQUEST_TIME - $cron_last > $threshold)) {
3490        drupal_cron_run();
3491      }
3492    }
3493  }
3494  
3495  /**
3496   * Gets the list of available date types and attributes.
3497   *
3498   * @param $type
3499   *   (optional) The date type name.
3500   *
3501   * @return
3502   *   An associative array of date type information keyed by the date type name.
3503   *   Each date type information array has the following elements:
3504   *   - type: The machine-readable name of the date type.
3505   *   - title: The human-readable name of the date type.
3506   *   - locked: A boolean indicating whether or not this date type should be
3507   *     configurable from the user interface.
3508   *   - module: The name of the module that defined this date type in its
3509   *     hook_date_format_types(). An empty string if the date type was
3510   *     user-defined.
3511   *   - is_new: A boolean indicating whether or not this date type is as of yet
3512   *     unsaved in the database.
3513   *   If $type was defined, only a single associative array with the above
3514   *   elements is returned.
3515   */
3516  function system_get_date_types($type = NULL) {
3517    $types = &drupal_static(__FUNCTION__);
3518  
3519    if (!isset($types)) {
3520      $types = _system_date_format_types_build();
3521    }
3522  
3523    return $type ? (isset($types[$type]) ? $types[$type] : FALSE) : $types;
3524  }
3525  
3526  /**
3527   * Implements hook_date_format_types().
3528   */
3529  function system_date_format_types() {
3530    return array(
3531      'long' => t('Long'),
3532      'medium' => t('Medium'),
3533      'short' => t('Short'),
3534    );
3535  }
3536  
3537  /**
3538   * Implements hook_date_formats().
3539   */
3540  function system_date_formats() {
3541    include_once  DRUPAL_ROOT . '/includes/date.inc';
3542    return system_default_date_formats();
3543  }
3544  
3545  /**
3546   * Gets the list of defined date formats and attributes.
3547   *
3548   * @param $type
3549   *   (optional) The date type name.
3550   *
3551   * @return
3552   *   An associative array of date formats. The top-level keys are the names of
3553   *   the date types that the date formats belong to. The values are in turn
3554   *   associative arrays keyed by the format string, with the following keys:
3555   *   - dfid: The date format ID.
3556   *   - format: The format string.
3557   *   - type: The machine-readable name of the date type.
3558   *   - locales: An array of language codes. This can include both 2 character
3559   *     language codes like 'en and 'fr' and 5 character language codes like
3560   *     'en-gb' and 'en-us'.
3561   *   - locked: A boolean indicating whether or not this date type should be
3562   *     configurable from the user interface.
3563   *   - module: The name of the module that defined this date format in its
3564   *     hook_date_formats(). An empty string if the format was user-defined.
3565   *   - is_new: A boolean indicating whether or not this date type is as of yet
3566   *     unsaved in the database.
3567   *   If $type was defined, only the date formats associated with the given date
3568   *   type are returned, in a single associative array keyed by format string.
3569   */
3570  function system_get_date_formats($type = NULL) {
3571    $date_formats = &drupal_static(__FUNCTION__);
3572  
3573    if (!isset($date_formats)) {
3574      $date_formats = _system_date_formats_build();
3575    }
3576  
3577    return $type ? (isset($date_formats[$type]) ? $date_formats[$type] : FALSE) : $date_formats;
3578  }
3579  
3580  /**
3581   * Gets the format details for a particular format ID.
3582   *
3583   * @param $dfid
3584   *   A date format ID.
3585   *
3586   * @return
3587   *   A date format object with the following properties:
3588   *   - dfid: The date format ID.
3589   *   - format: The date format string.
3590   *   - type: The name of the date type.
3591   *   - locked: Whether the date format can be changed or not.
3592   */
3593  function system_get_date_format($dfid) {
3594    return db_query('SELECT df.dfid, df.format, df.type, df.locked FROM {date_formats} df WHERE df.dfid = :dfid', array(':dfid' => $dfid))->fetch();
3595  }
3596  
3597  /**
3598   * Resets the database cache of date formats and saves all new date formats.
3599   */
3600  function system_date_formats_rebuild() {
3601    drupal_static_reset('system_get_date_formats');
3602    $date_formats = system_get_date_formats(NULL);
3603  
3604    foreach ($date_formats as $type => $formats) {
3605      foreach ($formats as $format => $info) {
3606        system_date_format_save($info);
3607      }
3608    }
3609  
3610    // Rebuild configured date formats locale list.
3611    drupal_static_reset('system_date_format_locale');
3612    system_date_format_locale();
3613  
3614    _system_date_formats_build();
3615  }
3616  
3617  /**
3618   * Gets the appropriate date format string for a date type and locale.
3619   *
3620   * @param $langcode
3621   *   (optional) Language code for the current locale. This can be a 2 character
3622   *   language code like 'en' and 'fr' or a 5 character language code like
3623   *   'en-gb' and 'en-us'.
3624   * @param $type
3625   *   (optional) The date type name.
3626   *
3627   * @return
3628   *   If $type and $langcode are specified, returns the corresponding date format
3629   *   string. If only $langcode is specified, returns an array of all date
3630   *   format strings for that locale, keyed by the date type. If neither is
3631   *   specified, or if no matching formats are found, returns FALSE.
3632   */
3633  function system_date_format_locale($langcode = NULL, $type = NULL) {
3634    $formats = &drupal_static(__FUNCTION__);
3635  
3636    if (empty($formats)) {
3637      $formats = array();
3638      $result = db_query("SELECT format, type, language FROM {date_format_locale}");
3639      foreach ($result as $record) {
3640        if (!isset($formats[$record->language])) {
3641          $formats[$record->language] = array();
3642        }
3643        $formats[$record->language][$record->type] = $record->format;
3644      }
3645    }
3646  
3647    if ($type && $langcode && !empty($formats[$langcode][$type])) {
3648      return $formats[$langcode][$type];
3649    }
3650    elseif ($langcode && !empty($formats[$langcode])) {
3651      return $formats[$langcode];
3652    }
3653  
3654    return FALSE;
3655  }
3656  
3657  /**
3658   * Builds and returns information about available date types.
3659   *
3660   * @return
3661   *   An associative array of date type information keyed by name. Each date type
3662   *   information array has the following elements:
3663   *   - type: The machine-readable name of the date type.
3664   *   - title: The human-readable name of the date type.
3665   *   - locked: A boolean indicating whether or not this date type should be
3666   *     configurable from the user interface.
3667   *   - module: The name of the module that defined this format in its
3668   *     hook_date_format_types(). An empty string if the format was user-defined.
3669   *   - is_new: A boolean indicating whether or not this date type is as of yet
3670   *     unsaved in the database.
3671   */
3672  function _system_date_format_types_build() {
3673    $types = array();
3674  
3675    // Get list of modules that implement hook_date_format_types().
3676    $modules = module_implements('date_format_types');
3677  
3678    foreach ($modules as $module) {
3679      $module_types = module_invoke($module, 'date_format_types');
3680      foreach ($module_types as $module_type => $type_title) {
3681        $type = array();
3682        $type['module'] = $module;
3683        $type['type'] = $module_type;
3684        $type['title'] = $type_title;
3685        $type['locked'] = 1;
3686        // Will be over-ridden later if in the db.
3687        $type['is_new'] = TRUE;
3688        $types[$module_type] = $type;
3689      }
3690    }
3691  
3692    // Get custom formats added to the database by the end user.
3693    $result = db_query('SELECT dft.type, dft.title, dft.locked FROM {date_format_type} dft ORDER BY dft.title');
3694    foreach ($result as $record) {
3695      if (!isset($types[$record->type])) {
3696        $type = array();
3697        $type['is_new'] = FALSE;
3698        $type['module'] = '';
3699        $type['type'] = $record->type;
3700        $type['title'] = $record->title;
3701        $type['locked'] = $record->locked;
3702        $types[$record->type] = $type;
3703      }
3704      else {
3705        $type = array();
3706        $type['is_new'] = FALSE;  // Over-riding previous setting.
3707        $types[$record->type] = array_merge($types[$record->type], $type);
3708      }
3709    }
3710  
3711    // Allow other modules to modify these date types.
3712    drupal_alter('date_format_types', $types);
3713  
3714    return $types;
3715  }
3716  
3717  /**
3718   * Builds and returns information about available date formats.
3719   *
3720   * @return
3721   *   An associative array of date formats. The top-level keys are the names of
3722   *   the date types that the date formats belong to. The values are in turn
3723   *   associative arrays keyed by format with the following keys:
3724   *   - dfid: The date format ID.
3725   *   - format: The PHP date format string.
3726   *   - type: The machine-readable name of the date type the format belongs to.
3727   *   - locales: An array of language codes. This can include both 2 character
3728   *     language codes like 'en and 'fr' and 5 character language codes like
3729   *     'en-gb' and 'en-us'.
3730   *   - locked: A boolean indicating whether or not this date type should be
3731   *     configurable from the user interface.
3732   *   - module: The name of the module that defined this format in its
3733   *     hook_date_formats(). An empty string if the format was user-defined.
3734   *   - is_new: A boolean indicating whether or not this date type is as of yet
3735   *     unsaved in the database.
3736   */
3737  function _system_date_formats_build() {
3738    $date_formats = array();
3739  
3740    // First handle hook_date_format_types().
3741    $types = _system_date_format_types_build();
3742    foreach ($types as $type => $info) {
3743      system_date_format_type_save($info);
3744    }
3745  
3746    // Get formats supplied by various contrib modules.
3747    $module_formats = module_invoke_all('date_formats');
3748  
3749    foreach ($module_formats as $module_format) {
3750      // System types are locked.
3751      $module_format['locked'] = 1;
3752      // If no date type is specified, assign 'custom'.
3753      if (!isset($module_format['type'])) {
3754        $module_format['type'] = 'custom';
3755      }
3756      if (!in_array($module_format['type'], array_keys($types))) {
3757        continue;
3758      }
3759      if (!isset($date_formats[$module_format['type']])) {
3760        $date_formats[$module_format['type']] = array();
3761      }
3762  
3763      // If another module already set this format, merge in the new settings.
3764      if (isset($date_formats[$module_format['type']][$module_format['format']])) {
3765        $date_formats[$module_format['type']][$module_format['format']] = array_merge_recursive($date_formats[$module_format['type']][$module_format['format']], $module_format);
3766      }
3767      else {
3768        // This setting will be overridden later if it already exists in the db.
3769        $module_format['is_new'] = TRUE;
3770        $date_formats[$module_format['type']][$module_format['format']] = $module_format;
3771      }
3772    }
3773  
3774    // Get custom formats added to the database by the end user.
3775    $result = db_query('SELECT df.dfid, df.format, df.type, df.locked, dfl.language FROM {date_formats} df LEFT JOIN {date_format_locale} dfl ON df.format = dfl.format AND df.type = dfl.type ORDER BY df.type, df.format');
3776    foreach ($result as $record) {
3777      // If this date type isn't set, initialise the array.
3778      if (!isset($date_formats[$record->type])) {
3779        $date_formats[$record->type] = array();
3780      }
3781      $format = (array) $record;
3782      $format['is_new'] = FALSE; // It's in the db, so override this setting.
3783      // If this format not already present, add it to the array.
3784      if (!isset($date_formats[$record->type][$record->format])) {
3785        $format['module'] = '';
3786        $format['locales'] = array($record->language);
3787        $date_formats[$record->type][$record->format] = $format;
3788      }
3789      // Format already present, so merge in settings.
3790      else {
3791        if (!empty($record->language)) {
3792          $format['locales'] = array_merge($date_formats[$record->type][$record->format]['locales'], array($record->language));
3793        }
3794        $date_formats[$record->type][$record->format] = array_merge($date_formats[$record->type][$record->format], $format);
3795      }
3796    }
3797  
3798    // Allow other modules to modify these formats.
3799    drupal_alter('date_formats', $date_formats);
3800  
3801    return $date_formats;
3802  }
3803  
3804  /**
3805   * Saves a date type to the database.
3806   *
3807   * @param $type
3808   *   A date type array containing the following keys:
3809   *   - type: The machine-readable name of the date type.
3810   *   - title: The human-readable name of the date type.
3811   *   - locked: A boolean indicating whether or not this date type should be
3812   *     configurable from the user interface.
3813   *   - is_new: A boolean indicating whether or not this date type is as of yet
3814   *     unsaved in the database.
3815   */
3816  function system_date_format_type_save($type) {
3817    $info = array();
3818    $info['type'] = $type['type'];
3819    $info['title'] = $type['title'];
3820    $info['locked'] = $type['locked'];
3821  
3822    // Update date_format table.
3823    if (!empty($type['is_new'])) {
3824      drupal_write_record('date_format_type', $info);
3825    }
3826    else {
3827      drupal_write_record('date_format_type', $info, 'type');
3828    }
3829  }
3830  
3831  /**
3832   * Deletes a date type from the database.
3833   *
3834   * @param $type
3835   *   The machine-readable name of the date type.
3836   */
3837  function system_date_format_type_delete($type) {
3838    db_delete('date_formats')
3839      ->condition('type', $type)
3840      ->execute();
3841    db_delete('date_format_type')
3842      ->condition('type', $type)
3843      ->execute();
3844    db_delete('date_format_locale')
3845      ->condition('type', $type)
3846      ->execute();
3847  }
3848  
3849  /**
3850   * Saves a date format to the database.
3851   *
3852   * @param $date_format
3853   *   A date format array containing the following keys:
3854   *   - type: The name of the date type this format is associated with.
3855   *   - format: The PHP date format string.
3856   *   - locked: A boolean indicating whether or not this format should be
3857   *     configurable from the user interface.
3858   * @param $dfid
3859   *   If set, replace the existing date format having this ID with the
3860   *   information specified in $date_format.
3861   *
3862   * @see system_get_date_types()
3863   * @see http://php.net/date
3864   */
3865  function system_date_format_save($date_format, $dfid = 0) {
3866    $info = array();
3867    $info['dfid'] = $dfid;
3868    $info['type'] = $date_format['type'];
3869    $info['format'] = $date_format['format'];
3870    $info['locked'] = $date_format['locked'];
3871  
3872    // Update date_format table.
3873    if (!empty($date_format['is_new'])) {
3874      drupal_write_record('date_formats', $info);
3875    }
3876    else {
3877      $keys = ($dfid ? array('dfid') : array('format', 'type'));
3878      drupal_write_record('date_formats', $info, $keys);
3879    }
3880  
3881    // Retrieve an array of language objects for enabled languages.
3882    $languages = language_list('enabled');
3883    // This list is keyed off the value of $language->enabled; we want the ones
3884    // that are enabled (value of 1).
3885    $languages = $languages[1];
3886  
3887    $locale_format = array();
3888    $locale_format['type'] = $date_format['type'];
3889    $locale_format['format'] = $date_format['format'];
3890  
3891    // Check if the suggested language codes are configured and enabled.
3892    if (!empty($date_format['locales'])) {
3893      foreach ($date_format['locales'] as $langcode) {
3894        // Only proceed if language is enabled.
3895        if (isset($languages[$langcode])) {
3896          $is_existing = (bool) db_query_range('SELECT 1 FROM {date_format_locale} WHERE type = :type AND language = :language', 0, 1, array(':type' => $date_format['type'], ':language' => $langcode))->fetchField();
3897          if (!$is_existing) {
3898            $locale_format['language'] = $langcode;
3899            drupal_write_record('date_format_locale', $locale_format);
3900          }
3901        }
3902      }
3903    }
3904  }
3905  
3906  /**
3907   * Deletes a date format from the database.
3908   *
3909   * @param $dfid
3910   *   The date format ID.
3911   */
3912  function system_date_format_delete($dfid) {
3913    db_delete('date_formats')
3914      ->condition('dfid', $dfid)
3915      ->execute();
3916  }
3917  
3918  /**
3919   * Implements hook_archiver_info().
3920   */
3921  function system_archiver_info() {
3922    $archivers['tar'] = array(
3923      'class' => 'ArchiverTar',
3924      'extensions' => array('tar', 'tgz', 'tar.gz', 'tar.bz2'),
3925    );
3926    if (function_exists('zip_open')) {
3927      $archivers['zip'] = array(
3928        'class' => 'ArchiverZip',
3929        'extensions' => array('zip'),
3930      );
3931    }
3932    return $archivers;
3933  }
3934  
3935  /**
3936   * Returns HTML for a confirmation form.
3937   *
3938   * By default this does not alter the appearance of a form at all,
3939   * but is provided as a convenience for themers.
3940   *
3941   * @param $variables
3942   *   An associative array containing:
3943   *   - form: A render element representing the form.
3944   *
3945   * @ingroup themeable
3946   */
3947  function theme_confirm_form($variables) {
3948    return drupal_render_children($variables['form']);
3949  }
3950  
3951  /**
3952   * Returns HTML for a system settings form.
3953   *
3954   * By default this does not alter the appearance of a form at all,
3955   * but is provided as a convenience for themers.
3956   *
3957   * @param $variables
3958   *   An associative array containing:
3959   *   - form: A render element representing the form.
3960   *
3961   * @ingroup themeable
3962   */
3963  function theme_system_settings_form($variables) {
3964    return drupal_render_children($variables['form']);
3965  }
3966  
3967  /**
3968   * Returns HTML for an exposed filter form.
3969   *
3970   * @param $variables
3971   *   An associative array containing:
3972   *   - form: An associative array containing the structure of the form.
3973   *
3974   * @return
3975   *   A string containing an HTML-formatted form.
3976   *
3977   * @ingroup themeable
3978   */
3979  function theme_exposed_filters($variables) {
3980    $form = $variables['form'];
3981    $output = '';
3982  
3983    if (isset($form['current'])) {
3984      $items = array();
3985      foreach (element_children($form['current']) as $key) {
3986        $items[] = drupal_render($form['current'][$key]);
3987      }
3988      $output .= theme('item_list', array('items' => $items, 'attributes' => array('class' => array('clearfix', 'current-filters'))));
3989    }
3990  
3991    $output .= drupal_render_children($form);
3992  
3993    return '<div class="exposed-filters">' . $output . '</div>';
3994  }
3995  
3996  /**
3997   * Implements hook_admin_paths().
3998   */
3999  function system_admin_paths() {
4000    $paths = array(
4001      'admin' => TRUE,
4002      'admin/*' => TRUE,
4003      'batch' => TRUE,
4004      // This page should not be treated as administrative since it outputs its
4005      // own content (outside of any administration theme).
4006      'admin/reports/status/php' => FALSE,
4007    );
4008    return $paths;
4009  }

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