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   1  <?php
   2  /**
   3   * WordPress Administration Bootstrap
   4   *
   5   * @package WordPress
   6   * @subpackage Administration
   7   */
   8  
   9  /**
  10   * In WordPress Administration Screens
  11   *
  12   * @since 2.3.2
  13   */
  14  if ( ! defined( 'WP_ADMIN' ) ) {
  15      define( 'WP_ADMIN', true );
  16  }
  17  
  18  if ( ! defined( 'WP_NETWORK_ADMIN' ) ) {
  19      define( 'WP_NETWORK_ADMIN', false );
  20  }
  21  
  22  if ( ! defined( 'WP_USER_ADMIN' ) ) {
  23      define( 'WP_USER_ADMIN', false );
  24  }
  25  
  26  if ( ! WP_NETWORK_ADMIN && ! WP_USER_ADMIN ) {
  27      define( 'WP_BLOG_ADMIN', true );
  28  }
  29  
  30  if ( isset( $_GET['import'] ) && ! defined( 'WP_LOAD_IMPORTERS' ) ) {
  31      define( 'WP_LOAD_IMPORTERS', true );
  32  }
  33  
  34  /** Load WordPress Bootstrap */
  35  require_once dirname( __DIR__ ) . '/wp-load.php';
  36  
  37  nocache_headers();
  38  
  39  if ( get_option( 'db_upgraded' ) ) {
  40  
  41      flush_rewrite_rules();
  42      update_option( 'db_upgraded', false, true );
  43  
  44      /**
  45       * Fires on the next page load after a successful DB upgrade.
  46       *
  47       * @since 2.8.0
  48       */
  49      do_action( 'after_db_upgrade' );
  50  
  51  } elseif ( ! wp_doing_ajax() && empty( $_POST )
  52      && (int) get_option( 'db_version' ) !== $wp_db_version
  53  ) {
  54  
  55      if ( ! is_multisite() ) {
  56          wp_redirect( admin_url( 'upgrade.php?_wp_http_referer=' . urlencode( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) );
  57          exit;
  58      }
  59  
  60      /**
  61       * Filters whether to attempt to perform the multisite DB upgrade routine.
  62       *
  63       * In single site, the user would be redirected to wp-admin/upgrade.php.
  64       * In multisite, the DB upgrade routine is automatically fired, but only
  65       * when this filter returns true.
  66       *
  67       * If the network is 50 sites or less, it will run every time. Otherwise,
  68       * it will throttle itself to reduce load.
  69       *
  70       * @since MU (3.0.0)
  71       *
  72       * @param bool $do_mu_upgrade Whether to perform the Multisite upgrade routine. Default true.
  73       */
  74      if ( apply_filters( 'do_mu_upgrade', true ) ) {
  75          $c = get_blog_count();
  76  
  77          /*
  78           * If there are 50 or fewer sites, run every time. Otherwise, throttle to reduce load:
  79           * attempt to do no more than threshold value, with some +/- allowed.
  80           */
  81          if ( $c <= 50 || ( $c > 50 && mt_rand( 0, (int) ( $c / 50 ) ) === 1 ) ) {
  82              require_once ABSPATH . WPINC . '/http.php';
  83              $response = wp_remote_get(
  84                  admin_url( 'upgrade.php?step=1' ),
  85                  array(
  86                      'timeout'     => 120,
  87                      'httpversion' => '1.1',
  88                  )
  89              );
  90              /** This action is documented in wp-admin/network/upgrade.php */
  91              do_action( 'after_mu_upgrade', $response );
  92              unset( $response );
  93          }
  94          unset( $c );
  95      }
  96  }
  97  
  98  require_once  ABSPATH . 'wp-admin/includes/admin.php';
  99  
 100  auth_redirect();
 101  
 102  // Schedule Trash collection.
 103  if ( ! wp_next_scheduled( 'wp_scheduled_delete' ) && ! wp_installing() ) {
 104      wp_schedule_event( time(), 'daily', 'wp_scheduled_delete' );
 105  }
 106  
 107  // Schedule transient cleanup.
 108  if ( ! wp_next_scheduled( 'delete_expired_transients' ) && ! wp_installing() ) {
 109      wp_schedule_event( time(), 'daily', 'delete_expired_transients' );
 110  }
 111  
 112  set_screen_options();
 113  
 114  $date_format = __( 'F j, Y' );
 115  $time_format = __( 'g:i a' );
 116  
 117  wp_enqueue_script( 'common' );
 118  
 119  /**
 120   * $pagenow is set in vars.php.
 121   * $wp_importers is sometimes set in wp-admin/includes/import.php.
 122   * The remaining variables are imported as globals elsewhere, declared as globals here.
 123   *
 124   * @global string $pagenow      The filename of the current screen.
 125   * @global array  $wp_importers
 126   * @global string $hook_suffix
 127   * @global string $plugin_page
 128   * @global string $typenow      The post type of the current screen.
 129   * @global string $taxnow       The taxonomy of the current screen.
 130   */
 131  global $pagenow, $wp_importers, $hook_suffix, $plugin_page, $typenow, $taxnow;
 132  
 133  $page_hook = null;
 134  
 135  $editing = false;
 136  
 137  if ( isset( $_GET['page'] ) ) {
 138      $plugin_page = wp_unslash( $_GET['page'] );
 139      $plugin_page = plugin_basename( $plugin_page );
 140  }
 141  
 142  if ( isset( $_REQUEST['post_type'] ) && post_type_exists( $_REQUEST['post_type'] ) ) {
 143      $typenow = $_REQUEST['post_type'];
 144  } else {
 145      $typenow = '';
 146  }
 147  
 148  if ( isset( $_REQUEST['taxonomy'] ) && taxonomy_exists( $_REQUEST['taxonomy'] ) ) {
 149      $taxnow = $_REQUEST['taxonomy'];
 150  } else {
 151      $taxnow = '';
 152  }
 153  
 154  if ( WP_NETWORK_ADMIN ) {
 155      require  ABSPATH . 'wp-admin/network/menu.php';
 156  } elseif ( WP_USER_ADMIN ) {
 157      require  ABSPATH . 'wp-admin/user/menu.php';
 158  } else {
 159      require  ABSPATH . 'wp-admin/menu.php';
 160  }
 161  
 162  if ( current_user_can( 'manage_options' ) ) {
 163      wp_raise_memory_limit( 'admin' );
 164  }
 165  
 166  /**
 167   * Fires as an admin screen or script is being initialized.
 168   *
 169   * Note, this does not just run on user-facing admin screens.
 170   * It runs on admin-ajax.php and admin-post.php as well.
 171   *
 172   * This is roughly analogous to the more general {@see 'init'} hook, which fires earlier.
 173   *
 174   * @since 2.5.0
 175   */
 176  do_action( 'admin_init' );
 177  
 178  if ( isset( $plugin_page ) ) {
 179      if ( ! empty( $typenow ) ) {
 180          $the_parent = $pagenow . '?post_type=' . $typenow;
 181      } else {
 182          $the_parent = $pagenow;
 183      }
 184  
 185      $page_hook = get_plugin_page_hook( $plugin_page, $the_parent );
 186      if ( ! $page_hook ) {
 187          $page_hook = get_plugin_page_hook( $plugin_page, $plugin_page );
 188  
 189          // Back-compat for plugins using add_management_page().
 190          if ( empty( $page_hook ) && 'edit.php' === $pagenow && get_plugin_page_hook( $plugin_page, 'tools.php' ) ) {
 191              // There could be plugin specific params on the URL, so we need the whole query string.
 192              if ( ! empty( $_SERVER['QUERY_STRING'] ) ) {
 193                  $query_string = $_SERVER['QUERY_STRING'];
 194              } else {
 195                  $query_string = 'page=' . $plugin_page;
 196              }
 197              wp_redirect( admin_url( 'tools.php?' . $query_string ) );
 198              exit;
 199          }
 200      }
 201      unset( $the_parent );
 202  }
 203  
 204  $hook_suffix = '';
 205  if ( isset( $page_hook ) ) {
 206      $hook_suffix = $page_hook;
 207  } elseif ( isset( $plugin_page ) ) {
 208      $hook_suffix = $plugin_page;
 209  } elseif ( isset( $pagenow ) ) {
 210      $hook_suffix = $pagenow;
 211  }
 212  
 213  set_current_screen();
 214  
 215  // Handle plugin admin pages.
 216  if ( isset( $plugin_page ) ) {
 217      if ( $page_hook ) {
 218          /**
 219           * Fires before a particular screen is loaded.
 220           *
 221           * The load-* hook fires in a number of contexts. This hook is for plugin screens
 222           * where a callback is provided when the screen is registered.
 223           *
 224           * The dynamic portion of the hook name, `$page_hook`, refers to a mixture of plugin
 225           * page information including:
 226           * 1. The page type. If the plugin page is registered as a submenu page, such as for
 227           *    Settings, the page type would be 'settings'. Otherwise the type is 'toplevel'.
 228           * 2. A separator of '_page_'.
 229           * 3. The plugin basename minus the file extension.
 230           *
 231           * Together, the three parts form the `$page_hook`. Citing the example above,
 232           * the hook name used would be 'load-settings_page_pluginbasename'.
 233           *
 234           * @see get_plugin_page_hook()
 235           *
 236           * @since 2.1.0
 237           */
 238          do_action( "load-{$page_hook}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 239          if ( ! isset( $_GET['noheader'] ) ) {
 240              require_once  ABSPATH . 'wp-admin/admin-header.php';
 241          }
 242  
 243          /**
 244           * Used to call the registered callback for a plugin screen.
 245           *
 246           * This hook uses a dynamic hook name, `$page_hook`, which refers to a mixture of plugin
 247           * page information including:
 248           * 1. The page type. If the plugin page is registered as a submenu page, such as for
 249           *    Settings, the page type would be 'settings'. Otherwise the type is 'toplevel'.
 250           * 2. A separator of '_page_'.
 251           * 3. The plugin basename minus the file extension.
 252           *
 253           * Together, the three parts form the `$page_hook`. Citing the example above,
 254           * the hook name used would be 'settings_page_pluginbasename'.
 255           *
 256           * @see get_plugin_page_hook()
 257           *
 258           * @since 1.5.0
 259           */
 260          do_action( $page_hook );
 261      } else {
 262          if ( validate_file( $plugin_page ) ) {
 263              wp_die( __( 'Invalid plugin page.' ) );
 264          }
 265  
 266          if ( ! ( file_exists( WP_PLUGIN_DIR . "/$plugin_page" ) && is_file( WP_PLUGIN_DIR . "/$plugin_page" ) )
 267              && ! ( file_exists( WPMU_PLUGIN_DIR . "/$plugin_page" ) && is_file( WPMU_PLUGIN_DIR . "/$plugin_page" ) )
 268          ) {
 269              /* translators: %s: Admin page generated by a plugin. */
 270              wp_die( sprintf( __( 'Cannot load %s.' ), htmlentities( $plugin_page ) ) );
 271          }
 272  
 273          /**
 274           * Fires before a particular screen is loaded.
 275           *
 276           * The load-* hook fires in a number of contexts. This hook is for plugin screens
 277           * where the file to load is directly included, rather than the use of a function.
 278           *
 279           * The dynamic portion of the hook name, `$plugin_page`, refers to the plugin basename.
 280           *
 281           * @see plugin_basename()
 282           *
 283           * @since 1.5.0
 284           */
 285          do_action( "load-{$plugin_page}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 286  
 287          if ( ! isset( $_GET['noheader'] ) ) {
 288              require_once  ABSPATH . 'wp-admin/admin-header.php';
 289          }
 290  
 291          if ( file_exists( WPMU_PLUGIN_DIR . "/$plugin_page" ) ) {
 292              include WPMU_PLUGIN_DIR . "/$plugin_page";
 293          } else {
 294              include WP_PLUGIN_DIR . "/$plugin_page";
 295          }
 296      }
 297  
 298      require_once  ABSPATH . 'wp-admin/admin-footer.php';
 299  
 300      exit;
 301  } elseif ( isset( $_GET['import'] ) ) {
 302  
 303      $importer = $_GET['import'];
 304  
 305      if ( ! current_user_can( 'import' ) ) {
 306          wp_die( __( 'Sorry, you are not allowed to import content into this site.' ) );
 307      }
 308  
 309      if ( validate_file( $importer ) ) {
 310          wp_redirect( admin_url( 'import.php?invalid=' . $importer ) );
 311          exit;
 312      }
 313  
 314      if ( ! isset( $wp_importers[ $importer ] ) || ! is_callable( $wp_importers[ $importer ][2] ) ) {
 315          wp_redirect( admin_url( 'import.php?invalid=' . $importer ) );
 316          exit;
 317      }
 318  
 319      /**
 320       * Fires before an importer screen is loaded.
 321       *
 322       * The dynamic portion of the hook name, `$importer`, refers to the importer slug.
 323       *
 324       * Possible hook names include:
 325       *
 326       *  - `load-importer-blogger`
 327       *  - `load-importer-wpcat2tag`
 328       *  - `load-importer-livejournal`
 329       *  - `load-importer-mt`
 330       *  - `load-importer-rss`
 331       *  - `load-importer-tumblr`
 332       *  - `load-importer-wordpress`
 333       *
 334       * @since 3.5.0
 335       */
 336      do_action( "load-importer-{$importer}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 337  
 338      // Used in the HTML title tag.
 339      $title        = __( 'Import' );
 340      $parent_file  = 'tools.php';
 341      $submenu_file = 'import.php';
 342  
 343      if ( ! isset( $_GET['noheader'] ) ) {
 344          require_once  ABSPATH . 'wp-admin/admin-header.php';
 345      }
 346  
 347      require_once  ABSPATH . 'wp-admin/includes/upgrade.php';
 348  
 349      define( 'WP_IMPORTING', true );
 350  
 351      /**
 352       * Filters whether to filter imported data through kses on import.
 353       *
 354       * Multisite uses this hook to filter all data through kses by default,
 355       * as a super administrator may be assisting an untrusted user.
 356       *
 357       * @since 3.1.0
 358       *
 359       * @param bool $force Whether to force data to be filtered through kses. Default false.
 360       */
 361      if ( apply_filters( 'force_filtered_html_on_import', false ) ) {
 362          kses_init_filters();  // Always filter imported data with kses on multisite.
 363      }
 364  
 365      call_user_func( $wp_importers[ $importer ][2] );
 366  
 367      require_once  ABSPATH . 'wp-admin/admin-footer.php';
 368  
 369      // Make sure rules are flushed.
 370      flush_rewrite_rules( false );
 371  
 372      exit;
 373  } else {
 374      /**
 375       * Fires before a particular screen is loaded.
 376       *
 377       * The load-* hook fires in a number of contexts. This hook is for core screens.
 378       *
 379       * The dynamic portion of the hook name, `$pagenow`, is a global variable
 380       * referring to the filename of the current screen, such as 'admin.php',
 381       * 'post-new.php' etc. A complete hook for the latter would be
 382       * 'load-post-new.php'.
 383       *
 384       * @since 2.1.0
 385       */
 386      do_action( "load-{$pagenow}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 387  
 388      /*
 389       * The following hooks are fired to ensure backward compatibility.
 390       * In all other cases, 'load-' . $pagenow should be used instead.
 391       */
 392      if ( 'page' === $typenow ) {
 393          if ( 'post-new.php' === $pagenow ) {
 394              do_action( 'load-page-new.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 395          } elseif ( 'post.php' === $pagenow ) {
 396              do_action( 'load-page.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 397          }
 398      } elseif ( 'edit-tags.php' === $pagenow ) {
 399          if ( 'category' === $taxnow ) {
 400              do_action( 'load-categories.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 401          } elseif ( 'link_category' === $taxnow ) {
 402              do_action( 'load-edit-link-categories.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 403          }
 404      } elseif ( 'term.php' === $pagenow ) {
 405          do_action( 'load-edit-tags.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 406      }
 407  }
 408  
 409  if ( ! empty( $_REQUEST['action'] ) ) {
 410      $action = $_REQUEST['action'];
 411  
 412      /**
 413       * Fires when an 'action' request variable is sent.
 414       *
 415       * The dynamic portion of the hook name, `$action`, refers to
 416       * the action derived from the `GET` or `POST` request.
 417       *
 418       * @since 2.6.0
 419       */
 420      do_action( "admin_action_{$action}" );
 421  }