<?php

/**

 * WordPress Administration Bootstrap

 *

 * @package WordPress

 * @subpackage Administration

 */

/**

 * In WordPress Administration Screens

 *

 * @since 2.3.2

 */

if ( ! defined('WP_ADMIN') )

	define('WP_ADMIN', true);

if ( ! defined('WP_NETWORK_ADMIN') )

	define('WP_NETWORK_ADMIN', false);

if ( ! defined('WP_USER_ADMIN') )

	define('WP_USER_ADMIN', false);

if ( ! WP_NETWORK_ADMIN && ! WP_USER_ADMIN ) {

	define('WP_BLOG_ADMIN', true);

}

if ( isset($_GET['import']) && !defined('WP_LOAD_IMPORTERS') )

	define('WP_LOAD_IMPORTERS', true);

require_once(dirname(dirname(__FILE__)) . '/wp-load.php');

nocache_headers();

if ( get_option('db_upgraded') ) {

	flush_rewrite_rules();

	update_option( 'db_upgraded',  false );

	/**

	 * Fires on the next page load after a successful DB upgrade.

	 *

	 * @since 2.8.0

	 */

	do_action( 'after_db_upgrade' );

} elseif ( get_option('db_version') != $wp_db_version && empty($_POST) ) {

	if ( !is_multisite() ) {

		wp_redirect( admin_url( 'upgrade.php?_wp_http_referer=' . urlencode( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) );

		exit;

	/**

	 * Filter whether to attempt to perform the multisite DB upgrade routine.

	 *

	 * In single site, the user would be redirected to wp-admin/upgrade.php.

	 * In multisite, it is automatically fired, but only when this filter

	 * returns true.

	 *

	 * If the network is 50 sites or less, it will run every time. Otherwise,

	 * it will throttle itself to reduce load.

	 *

	 * @since 3.0.0

	 *

	 * @param bool true Whether to perform the Multisite upgrade routine. Default true.

	 */

	} elseif ( apply_filters( 'do_mu_upgrade', true ) ) {

		$c = get_blog_count();

		// If 50 or fewer sites, run every time. Else, run "about ten percent" of the time. Shh, don't check that math.

		if ( $c <= 50 || ( $c > 50 && mt_rand( 0, (int)( $c / 50 ) ) == 1 ) ) {

			require_once( ABSPATH . WPINC . '/http.php' );

			$response = wp_remote_get( admin_url( 'upgrade.php?step=1' ), array( 'timeout' => 120, 'httpversion' => '1.1' ) );

			/**

			 * Fires after the multisite DB upgrade is complete.

			 *

			 * @since 3.0.0

			 *

			 * @param array|WP_Error $response The upgrade response array or WP_Error on failure.

			 */

			do_action( 'after_mu_upgrade', $response );

			unset($response);

		}

		unset($c);

	}

}

require_once(ABSPATH . 'wp-admin/includes/admin.php');

auth_redirect();

// Schedule trash collection

if ( !wp_next_scheduled('wp_scheduled_delete') && !defined('WP_INSTALLING') )

	wp_schedule_event(time(), 'daily', 'wp_scheduled_delete');

set_screen_options();

$date_format = get_option('date_format');

$time_format = get_option('time_format');

wp_enqueue_script( 'common' );

$editing = false;

if ( isset($_GET['page']) ) {

	$plugin_page = wp_unslash( $_GET['page'] );

	$plugin_page = plugin_basename($plugin_page);

}

if ( isset( $_REQUEST['post_type'] ) && post_type_exists( $_REQUEST['post_type'] ) )

	$typenow = $_REQUEST['post_type'];

else

	$typenow = '';

if ( isset( $_REQUEST['taxonomy'] ) && taxonomy_exists( $_REQUEST['taxonomy'] ) )

	$taxnow = $_REQUEST['taxonomy'];

else

	$taxnow = '';

if ( WP_NETWORK_ADMIN )

	require(ABSPATH . 'wp-admin/network/menu.php');

elseif ( WP_USER_ADMIN )

	require(ABSPATH . 'wp-admin/user/menu.php');

else

	require(ABSPATH . 'wp-admin/menu.php');

if ( current_user_can( 'manage_options' ) ) {

	/**

	 * Filter the maximum memory limit available for administration screens.

	 *

	 * This only applies to administrators, who may require more memory for tasks like updates.

	 * Memory limits when processing images (uploaded or edited by users of any role) are

	 * handled separately.

	 *

	 * The WP_MAX_MEMORY_LIMIT constant specifically defines the maximum memory limit available

	 * when in the administration back-end. The default is 256M, or 256 megabytes of memory.

	 *

	 * @since 3.0.0

	 *

	 * @param string 'WP_MAX_MEMORY_LIMIT' The maximum WordPress memory limit. Default 256M.

	 */

	@ini_set( 'memory_limit', apply_filters( 'admin_memory_limit', WP_MAX_MEMORY_LIMIT ) );

}

/**

 * Fires as an admin screen or script is being initialized.

 *

 * Note, this does not just run on user-facing admin screens.

 * It runs on admin-ajax.php and admin-post.php as well.

 *

 * This is roughly analgous to the more general 'init' hook, which fires earlier.

 *

 * @since 2.5.0

 */

do_action( 'admin_init' );

if ( isset($plugin_page) ) {

	if ( !empty($typenow) )

		$the_parent = $pagenow . '?post_type=' . $typenow;

	else

		$the_parent = $pagenow;

	if ( ! $page_hook = get_plugin_page_hook($plugin_page, $the_parent) ) {

		$page_hook = get_plugin_page_hook($plugin_page, $plugin_page);

		// backwards compatibility for plugins using add_management_page

		if ( empty( $page_hook ) && 'edit.php' == $pagenow && '' != get_plugin_page_hook($plugin_page, 'tools.php') ) {

			// There could be plugin specific params on the URL, so we need the whole query string

			if ( !empty($_SERVER[ 'QUERY_STRING' ]) )

				$query_string = $_SERVER[ 'QUERY_STRING' ];

			else

				$query_string = 'page=' . $plugin_page;

			wp_redirect( admin_url('tools.php?' . $query_string) );

			exit;

		}

	}

	unset($the_parent);

}

$hook_suffix = '';

if ( isset($page_hook) )

	$hook_suffix = $page_hook;

else if ( isset($plugin_page) )

	$hook_suffix = $plugin_page;

else if ( isset($pagenow) )

	$hook_suffix = $pagenow;

set_current_screen();

// Handle plugin admin pages.

if ( isset($plugin_page) ) {

	if ( $page_hook ) {

		/**

		 * Fires before a particular screen is loaded.

		 *

		 * The load-* hook fires in a number of contexts. This hook is for plugin screens

		 * where a callback is provided when the screen is registered.

		 *

		 * The dynamic portion of the hook name, $page_hook, refers to a mixture of plugin

		 * page information including:

		 * 1. The page type. If the plugin page is registered as a submenu page, such as for

		 *    Settings, the page type would be 'settings'. Otherwise the type is 'toplevel'.

		 * 2. A separator of '_page_'.

		 * 3. The plugin basename minus the file extension.

		 *

		 * Together, the three parts form the $page_hook. Citing the example above,

		 * the hook name used would be 'load-settings_page_pluginbasename'.

		 *

		 * @see get_plugin_page_hook()

		 *

		 * @since 2.1.0

		 */

		do_action( 'load-' . $page_hook );

		if (! isset($_GET['noheader']))

			require_once(ABSPATH . 'wp-admin/admin-header.php');

		/**

		 * Used to call the registered callback for a plugin screen.

		 *

		 * @access private

		 *

		 * @since 1.5.0

		 */

		do_action( $page_hook );

	} else {

		if ( validate_file($plugin_page) )

			wp_die(__('Invalid plugin page'));

		if ( !( file_exists(WP_PLUGIN_DIR . "/$plugin_page") && is_file(WP_PLUGIN_DIR . "/$plugin_page") ) && !( file_exists(WPMU_PLUGIN_DIR . "/$plugin_page") && is_file(WPMU_PLUGIN_DIR . "/$plugin_page") ) )

			wp_die(sprintf(__('Cannot load %s.'), htmlentities($plugin_page)));

		/**

		 * Fires before a particular screen is loaded.

		 *

		 * The load-* hook fires in a number of contexts. This hook is for plugin screens

		 * where the file to load is directly included, rather than the use of a function.

		 *

		 * The dynamic portion of the hook name, $plugin_page, refers to the plugin basename.

		 *

		 * @see plugin_basename()

		 *

		 * @since 1.5.0

		 */

		do_action( 'load-' . $plugin_page );

		if ( !isset($_GET['noheader']))

			require_once(ABSPATH . 'wp-admin/admin-header.php');

		if ( file_exists(WPMU_PLUGIN_DIR . "/$plugin_page") )

			include(WPMU_PLUGIN_DIR . "/$plugin_page");

		else

			include(WP_PLUGIN_DIR . "/$plugin_page");

	}

	include(ABSPATH . 'wp-admin/admin-footer.php');

	exit();

} else if (isset($_GET['import'])) {

	$importer = $_GET['import'];

	if ( ! current_user_can('import') )

		wp_die(__('You are not allowed to import.'));

	if ( validate_file($importer) ) {

		wp_redirect( admin_url( 'import.php?invalid=' . $importer ) );

		exit;

	}

	if ( ! isset($wp_importers[$importer]) || ! is_callable($wp_importers[$importer][2]) ) {

		wp_redirect( admin_url( 'import.php?invalid=' . $importer ) );

		exit;

	}

	/**

	 * Fires before an importer screen is loaded.

	 *

	 * The dynamic portion of the hook name, $importer, refers to the importer slug.

	 *

	 * @since 3.5.0

	 */

	do_action( 'load-importer-' . $importer );

	$parent_file = 'tools.php';

	$submenu_file = 'import.php';

	$title = __('Import');

	if (! isset($_GET['noheader']))

		require_once(ABSPATH . 'wp-admin/admin-header.php');

	require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

	define('WP_IMPORTING', true);

	/**

	 * Whether to filter imported data through kses on import.

	 *

	 * Multisite uses this hook to filter all data through kses by default,

	 * as a super administrator may be assisting an untrusted user.

	 *

	 * @since 3.1.0

	 *

	 * @param bool false Whether to force data to be filtered through kses. Default false.

	 */

	if ( apply_filters( 'force_filtered_html_on_import', false ) )

		kses_init_filters();  // Always filter imported data with kses on multisite.

	call_user_func($wp_importers[$importer][2]);

	include(ABSPATH . 'wp-admin/admin-footer.php');

	// Make sure rules are flushed

	flush_rewrite_rules(false);

	exit();

} else {

	/**

	 * Fires before a particular screen is loaded.

	 *

	 * The load-* hook fires in a number of contexts. This hook is for core screens.

	 *

	 * The dynamic portion of the hook name, $pagenow, is a global variable

	 * referring to the filename of the current page, such as 'admin.php',

	 * 'post-new.php' etc. A complete hook for the latter would be 'load-post-new.php'.

	 *

	 * @since 2.1.0

	 */

	do_action( 'load-' . $pagenow );

	// Backwards compatibility with old load-page-new.php, load-page.php,

	// and load-categories.php actions.

	if ( $typenow == 'page' ) {

		if ( $pagenow == 'post-new.php' )

			do_action( 'load-page-new.php' );

		elseif ( $pagenow == 'post.php' )

			do_action( 'load-page.php' );

	}  elseif ( $pagenow == 'edit-tags.php' ) {

		if ( $taxnow == 'category' )

			do_action( 'load-categories.php' );

		elseif ( $taxnow == 'link_category' )

			do_action( 'load-edit-link-categories.php' );

	}

}

if ( ! empty( $_REQUEST['action'] ) ) {

	/**

	 * Fires when an 'action' request variable is sent.

	 *

	 * The dynamic portion of the hook name, $_REQUEST['action'],

	 * refers to the action derived from the GET or POST request.

	 *

	 * @since 2.6.0

	 */

	do_action( 'admin_action_' . $_REQUEST['action'] );

}