FM / wp-includes

/home/techb158/public_html/wp-includes

Name	Size	Mode	Actions
abilities-api/	-	0755	rm
ai-client/	-	0755	rm
assets/	-	0777	rm
block-bindings/	-	0755	rm
block-patterns/	-	0777	rm
block-supports/	-	0777	rm
blocks/	-	0777	rm
build/	-	0755	rm
certificates/	-	0777	rm
css/	-	0777	rm
customize/	-	0777	rm
fonts/	-	0777	rm
html-api/	-	0755	rm
ID3/	-	0777	rm
images/	-	0777	rm
interactivity-api/	-	0755	rm
IXR/	-	0777	rm
js/	-	0777	rm
l10n/	-	0755	rm
php-ai-client/	-	0755	rm
php-compat/	-	0777	rm
PHPMailer/	-	0777	rm
pomo/	-	0777	rm
Requests/	-	0777	rm
rest-api/	-	0777	rm
SimplePie/	-	0777	rm
sitemaps/	-	0777	rm
sodium_compat/	-	0777	rm
style-engine/	-	0777	rm
Text/	-	0777	rm
theme-compat/	-	0777	rm
widgets/	-	0777	rm
.htaccess	178	0644	edit dl rm
abilities-api.php	32800	0666	edit dl rm
abilities.php	11797	0666	edit dl rm
admin-bar.php	40067	0666	edit dl rm
ai-client.php	2549	0666	edit dl rm
atomlib.php	12181	0666	edit dl rm
author-template.php	19844	0666	edit dl rm
block-bindings.php	7632	0666	edit dl rm
block-editor.php	28724	0666	edit dl rm
block-i18n.json	316	0666	edit dl rm
block-patterns.php	15606	0666	edit dl rm
block-template-utils.php	63168	0666	edit dl rm
block-template.php	18257	0666	edit dl rm
blocks.php	124205	0666	edit dl rm
bookmark-template.php	12768	0666	edit dl rm
bookmark.php	15427	0666	edit dl rm
cache-compat.php	11021	0666	edit dl rm
cache.php	13486	0666	edit dl rm
canonical.php	34786	0666	edit dl rm
capabilities.php	43584	0666	edit dl rm
category-template.php	56990	0666	edit dl rm
category.php	12834	0666	edit dl rm
class-avif-info.php	30008	0666	edit dl rm
class-feed.php	539	0666	edit dl rm
class-http.php	367	0666	edit dl rm
class-IXR.php	2609	0666	edit dl rm
class-json.php	43676	0666	edit dl rm
class-oembed.php	401	0666	edit dl rm
class-phpass.php	6771	0666	edit dl rm
class-phpmailer.php	664	0666	edit dl rm
class-pop3.php	21100	0666	edit dl rm
class-requests.php	2237	0666	edit dl rm
class-simplepie.php	453	0666	edit dl rm
class-smtp.php	457	0666	edit dl rm
class-snoopy.php	37715	0666	edit dl rm
class-walker-category-dropdown.php	2469	0666	edit dl rm
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class-walker-nav-menu.php	12044	0666	edit dl rm
class-walker-page-dropdown.php	2710	0666	edit dl rm
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class-wp-admin-bar.php	18002	0666	edit dl rm
class-wp-ajax-response.php	5288	0666	edit dl rm
class-wp-application-passwords.php	17099	0666	edit dl rm
class-wp-block-bindings-registry.php	8263	0666	edit dl rm
class-wp-block-bindings-source.php	2992	0666	edit dl rm
class-wp-block-editor-context.php	1350	0666	edit dl rm
class-wp-block-list.php	4713	0666	edit dl rm
class-wp-block-metadata-registry.php	11846	0666	edit dl rm
class-wp-block-parser-block.php	2555	0666	edit dl rm
class-wp-block-parser-frame.php	1994	0666	edit dl rm
class-wp-block-parser.php	11525	0666	edit dl rm
class-wp-block-pattern-categories-registry.php	4383	0666	edit dl rm
class-wp-block-patterns-registry.php	10265	0666	edit dl rm
class-wp-block-processor.php	69914	0666	edit dl rm
class-wp-block-styles-registry.php	6419	0666	edit dl rm
class-wp-block-supports.php	7578	0666	edit dl rm
class-wp-block-template.php	2111	0666	edit dl rm
class-wp-block-templates-registry.php	7080	0666	edit dl rm
class-wp-block-type-registry.php	5305	0666	edit dl rm
class-wp-block-type.php	17222	0666	edit dl rm
class-wp-block.php	28236	0666	edit dl rm
class-wp-classic-to-block-menu-converter.php	4026	0666	edit dl rm
class-wp-comment-query.php	49040	0666	edit dl rm
class-wp-comment.php	17249	0666	edit dl rm
class-wp-connector-registry.php	15181	0666	edit dl rm
class-wp-customize-control.php	26112	0666	edit dl rm
class-wp-customize-manager.php	202908	0666	edit dl rm
class-wp-customize-nav-menus.php	58034	0666	edit dl rm
class-wp-customize-panel.php	10703	0666	edit dl rm
class-wp-customize-section.php	11209	0666	edit dl rm
class-wp-customize-setting.php	29956	0666	edit dl rm
class-wp-customize-widgets.php	72596	0666	edit dl rm
class-wp-date-query.php	35970	0666	edit dl rm
class-wp-dependencies.php	17089	0666	edit dl rm
class-wp-dependency.php	2653	0666	edit dl rm
class-wp-duotone.php	40836	0666	edit dl rm
class-wp-editor.php	72228	0666	edit dl rm
class-wp-embed.php	15908	0666	edit dl rm
class-wp-error.php	7514	0666	edit dl rm
class-wp-exception.php	253	0666	edit dl rm
class-wp-fatal-error-handler.php	8150	0666	edit dl rm
class-wp-feed-cache-transient.php	3304	0666	edit dl rm
class-wp-feed-cache.php	969	0666	edit dl rm
class-wp-filter-sentinel.php	760	0666	edit dl rm
class-wp-hook.php	17472	0666	edit dl rm
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class-wp-http-proxy.php	5980	0666	edit dl rm
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class-wp-icon-collections-registry.php	5805	0666	edit dl rm
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class-wp-image-editor-gd.php	20741	0666	edit dl rm
class-wp-image-editor-imagick.php	43454	0666	edit dl rm
class-wp-image-editor.php	17456	0666	edit dl rm
class-wp-list-util.php	7443	0666	edit dl rm
class-wp-locale-switcher.php	6776	0666	edit dl rm
class-wp-locale.php	16848	0666	edit dl rm
class-wp-matchesmapregex.php	1828	0666	edit dl rm
class-wp-meta-query.php	30507	0666	edit dl rm
class-wp-metadata-lazyloader.php	6833	0666	edit dl rm
class-wp-navigation-fallback.php	9193	0666	edit dl rm
class-wp-network-query.php	19989	0666	edit dl rm
class-wp-network.php	12411	0666	edit dl rm
class-wp-object-cache.php	17524	0666	edit dl rm
class-wp-oembed-controller.php	6905	0666	edit dl rm
class-wp-oembed.php	34372	0666	edit dl rm
class-wp-paused-extensions-storage.php	5067	0666	edit dl rm
class-wp-phpmailer.php	4348	0666	edit dl rm
class-wp-plugin-dependencies.php	25209	0666	edit dl rm
class-wp-post-type.php	30672	0666	edit dl rm
class-wp-post.php	8806	0666	edit dl rm
class-wp-query.php	164148	0666	edit dl rm
class-wp-recovery-mode-cookie-service.php	6877	0666	edit dl rm
class-wp-recovery-mode-email-service.php	11162	0666	edit dl rm
class-wp-recovery-mode-key-service.php	4914	0666	edit dl rm
class-wp-recovery-mode-link-service.php	3523	0666	edit dl rm
class-wp-recovery-mode.php	11460	0666	edit dl rm
class-wp-rewrite.php	63693	0666	edit dl rm
class-wp-role.php	2523	0666	edit dl rm
class-wp-roles.php	9326	0666	edit dl rm
class-wp-script-modules.php	40743	0666	edit dl rm
class-wp-scripts.php	36754	0666	edit dl rm
class-wp-session-tokens.php	7319	0666	edit dl rm
class-wp-simplepie-file.php	3552	0666	edit dl rm
class-wp-simplepie-sanitize-kses.php	1903	0666	edit dl rm
class-wp-site-query.php	31482	0666	edit dl rm
class-wp-site.php	7836	0666	edit dl rm
class-wp-speculation-rules.php	7884	0666	edit dl rm
class-wp-styles.php	13316	0666	edit dl rm
class-wp-tax-query.php	19577	0666	edit dl rm
class-wp-taxonomy.php	18559	0666	edit dl rm
class-wp-term-query.php	40751	0666	edit dl rm
class-wp-term.php	5263	0666	edit dl rm
class-wp-text-diff-renderer-inline.php	979	0666	edit dl rm
class-wp-text-diff-renderer-table.php	18925	0666	edit dl rm
class-wp-textdomain-registry.php	10481	0666	edit dl rm
class-wp-theme-json-data.php	1805	0666	edit dl rm
class-wp-theme-json-resolver.php	35692	0666	edit dl rm
class-wp-theme-json-schema.php	7367	0666	edit dl rm
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class-wp-theme.php	65811	0666	edit dl rm
class-wp-token-map.php	29032	0666	edit dl rm
class-wp-url-pattern-prefixer.php	4802	0666	edit dl rm
class-wp-user-meta-session-tokens.php	2954	0666	edit dl rm
class-wp-user-query.php	44102	0666	edit dl rm
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class-wp-walker.php	13292	0666	edit dl rm
class-wp-widget-factory.php	3343	0666	edit dl rm
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class-wp-xmlrpc-server.php	216272	0666	edit dl rm
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class-wpdb.php	121437	0666	edit dl rm
class.wp-dependencies.php	373	0666	edit dl rm
class.wp-scripts.php	343	0666	edit dl rm
class.wp-styles.php	338	0666	edit dl rm
comment-template.php	103211	0666	edit dl rm
comment.php	150630	0666	edit dl rm
compat-utf8.php	19386	0666	edit dl rm
compat.php	23105	0644	edit dl rm
connectors.php	32922	0666	edit dl rm
cron.php	46266	0666	edit dl rm
date.php	400	0666	edit dl rm
default-constants.php	11365	0666	edit dl rm
default-filters.php	39500	0666	edit dl rm
default-widgets.php	2288	0666	edit dl rm
deprecated.php	193977	0666	edit dl rm
embed-template.php	338	0666	edit dl rm
embed.php	39215	0666	edit dl rm
error-protection.php	4092	0666	edit dl rm
feed-atom-comments.php	5504	0666	edit dl rm
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feed-rdf.php	2668	0666	edit dl rm
feed-rss.php	1189	0666	edit dl rm
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feed.php	25189	0666	edit dl rm
fonts.php	9789	0666	edit dl rm
formatting.php	357652	0666	edit dl rm
functions.php	295481	0666	edit dl rm
functions.wp-scripts.php	20492	0666	edit dl rm
functions.wp-styles.php	8654	0666	edit dl rm
general-template.php	183472	0666	edit dl rm
global-styles-and-settings.php	20780	0666	edit dl rm
http.php	28961	0666	edit dl rm
https-detection.php	5857	0666	edit dl rm
https-migration.php	4741	0666	edit dl rm
icons.php	6334	0666	edit dl rm
index.php	1088	0444	edit dl rm
json-schema.php	7802	0666	edit dl rm
kses.php	88497	0666	edit dl rm
kwa.txt	1	0644	edit dl rm
l10n.php	71415	0666	edit dl rm
link-template.php	160143	0666	edit dl rm
load.php	57148	0644	edit dl rm
locale.php	162	0666	edit dl rm
media-template.php	65759	0666	edit dl rm
media.php	236804	0666	edit dl rm
meta.php	66739	0666	edit dl rm
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plugin.php	39110	0644	edit dl rm
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registration.php	200	0666	edit dl rm
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robots-template.php	5185	0666	edit dl rm
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session.php	258	0666	edit dl rm
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sitemaps.php	3238	0666	edit dl rm
speculative-loading.php	11880	0666	edit dl rm
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style-engine.php	8045	0666	edit dl rm
taxonomy.php	178307	0666	edit dl rm
template-canvas.php	544	0666	edit dl rm
template-loader.php	4267	0666	edit dl rm
template.php	36824	0666	edit dl rm
theme-i18n.json	1892	0666	edit dl rm
theme-previews.php	2887	0666	edit dl rm
theme-templates.php	4060	0666	edit dl rm
theme.json	9480	0666	edit dl rm
theme.php	134641	0666	edit dl rm
update.php	38269	0666	edit dl rm
user.php	180301	0666	edit dl rm
utf8.php	6977	0666	edit dl rm
vars.php	6600	0666	edit dl rm
version.php	1809	0644	edit dl rm
view-config.php	19087	0666	edit dl rm
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widgets.php	70866	0666	edit dl rm
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Edit: /home/techb158/public_html/wp-includes/update.php (38269B)

<?php
/**
 * A simple set of functions to check the WordPress.org Version Update service.
 *
 * @package WordPress
 * @since 2.3.0
 */

// Don't load directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Checks WordPress version against the newest version.
 *
 * The WordPress version, PHP version, and locale is sent to api.wordpress.org.
 *
 * Checks against the WordPress server at api.wordpress.org. Will only check
 * if WordPress isn't installing.
 *
 * @since 2.3.0
 *
 * @global wpdb   $wpdb             WordPress database abstraction object.
 * @global string $wp_local_package Locale code of the package.
 *
 * @param array $extra_stats Extra statistics to report to the WordPress.org API.
 * @param bool  $force_check Whether to bypass the transient cache and force a fresh update check.
 *                           Defaults to false, true if $extra_stats is set.
 */
function wp_version_check( $extra_stats = array(), $force_check = false ) {
	global $wpdb, $wp_local_package;

if ( wp_installing() ) {
		return;
	}

$php_version = PHP_VERSION;

$current      = get_site_transient( 'update_core' );
	$translations = wp_get_installed_translations( 'core' );

// Invalidate the transient when $wp_version changes.
	if ( is_object( $current ) && wp_get_wp_version() !== $current->version_checked ) {
		$current = false;
	}

if ( ! is_object( $current ) ) {
		$current                  = new stdClass();
		$current->updates         = array();
		$current->version_checked = wp_get_wp_version();
	}

if ( ! empty( $extra_stats ) ) {
		$force_check = true;
	}

// Wait 1 minute between multiple version check requests.
	$timeout          = MINUTE_IN_SECONDS;
	$time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked );

if ( ! $force_check && $time_not_changed ) {
		return;
	}

/**
	 * Filters the locale requested for WordPress core translations.
	 *
	 * @since 2.8.0
	 *
	 * @param string $locale Current locale.
	 */
	$locale = apply_filters( 'core_version_check_locale', get_locale() );

// Update last_checked for current to prevent multiple blocking requests if request hangs.
	$current->last_checked = time();
	set_site_transient( 'update_core', $current );

if ( method_exists( $wpdb, 'db_server_info' ) ) {
		$mysql_version = $wpdb->db_server_info();
	} elseif ( method_exists( $wpdb, 'db_version' ) ) {
		$mysql_version = preg_replace( '/[^0-9.].*/', '', $wpdb->db_version() );
	} else {
		$mysql_version = 'N/A';
	}

if ( is_multisite() ) {
		$num_blogs         = get_blog_count();
		$wp_install        = network_site_url();
		$multisite_enabled = 1;
	} else {
		$multisite_enabled = 0;
		$num_blogs         = 1;
		$wp_install        = home_url( '/' );
	}

$extensions = get_loaded_extensions();
	sort( $extensions, SORT_STRING | SORT_FLAG_CASE );
	$query = array(
		'version'            => wp_get_wp_version(),
		'php'                => $php_version,
		'locale'             => $locale,
		'mysql'              => $mysql_version,
		'local_package'      => $wp_local_package ?? '',
		'blogs'              => $num_blogs,
		'users'              => get_user_count(),
		'multisite_enabled'  => $multisite_enabled,
		'initial_db_version' => get_site_option( 'initial_db_version' ),
		'myisam_tables'      => array(),
		'extensions'         => array_combine( $extensions, array_map( 'phpversion', $extensions ) ),
		'platform_flags'     => array(
			'os'   => PHP_OS,
			'bits' => PHP_INT_SIZE === 4 ? 32 : 64,
		),
		'image_support'      => array(),
	);

// Check for default tables using the MyISAM engine.
	$table_names   = implode( "','", $wpdb->tables() );
	$myisam_tables = $wpdb->get_results(
		$wpdb->prepare(
			// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- This query cannot use interpolation.
			"SELECT TABLE_NAME FROM information_schema.TABLES WHERE TABLE_SCHEMA = %s AND TABLE_NAME IN ('$table_names') AND ENGINE = %s;",
			DB_NAME,
			'MyISAM'
		),
		OBJECT_K
	);

if ( ! empty( $myisam_tables ) ) {
		$all_unprefixed_tables = $wpdb->tables( 'all', false );

// Including the table prefix is not necessary.
		$unprefixed_myisam_tables = array_reduce(
			array_keys( $myisam_tables ),
			function ( $carry, $prefixed_myisam_table ) use ( $all_unprefixed_tables ) {
				foreach ( $all_unprefixed_tables as $unprefixed ) {
					if ( str_ends_with( $prefixed_myisam_table, $unprefixed ) ) {
						$carry[] = $unprefixed;
						break;
					}
				}
				return $carry;
			},
			array()
		);

$query['myisam_tables'] = $unprefixed_myisam_tables;
	}

if ( function_exists( 'gd_info' ) ) {
		$gd_info = gd_info();
		// Filter to supported values.
		$gd_info = array_filter( $gd_info );

// Add data for GD WebP, AVIF, HEIC and JPEG XL support.
		$query['image_support']['gd'] = array_keys(
			array_filter(
				array(
					'webp' => isset( $gd_info['WebP Support'] ),
					'avif' => isset( $gd_info['AVIF Support'] ),
					'heic' => isset( $gd_info['HEIC Support'] ),
					'jxl'  => isset( $gd_info['JXL Support'] ),
				)
			)
		);
	}

if ( class_exists( 'Imagick' ) ) {
		// Add data for Imagick WebP, AVIF, HEIC and JPEG XL support.
		$query['image_support']['imagick'] = array_keys(
			array_filter(
				array(
					'webp' => ! empty( Imagick::queryFormats( 'WEBP' ) ),
					'avif' => ! empty( Imagick::queryFormats( 'AVIF' ) ),
					'heic' => ! empty( Imagick::queryFormats( 'HEIC' ) ),
					'jxl'  => ! empty( Imagick::queryFormats( 'JXL' ) ),
				)
			)
		);
	}

/**
	 * Filters the query arguments sent as part of the core version check.
	 *
	 * WARNING: Changing this data may result in your site not receiving security updates.
	 * Please exercise extreme caution.
	 *
	 * @since 4.9.0
	 * @since 6.1.0 Added `$extensions`, `$platform_flags`, and `$image_support` to the `$query` parameter.
	 *
	 * @param array $query {
	 *     Version check query arguments.
	 *
	 *     @type string $version            WordPress version number.
	 *     @type string $php                PHP version number.
	 *     @type string $locale             The locale to retrieve updates for.
	 *     @type string $mysql              MySQL version number.
	 *     @type string $local_package      The value of the $wp_local_package global, when set.
	 *     @type int    $blogs              Number of sites on this WordPress installation.
	 *     @type int    $users              Number of users on this WordPress installation.
	 *     @type int    $multisite_enabled  Whether this WordPress installation uses Multisite.
	 *     @type int    $initial_db_version Database version of WordPress at time of installation.
	 *     @type array  $extensions         List of PHP extensions and their versions.
	 *     @type array  $platform_flags     List containing the operating system name and bit support.
	 *     @type array  $image_support      List of image formats supported by GD and Imagick.
	 * }
	 */
	$query = apply_filters( 'core_version_check_query_args', $query );

$post_body = array(
		'translations' => wp_json_encode( $translations ),
	);

if ( is_array( $extra_stats ) ) {
		$post_body = array_merge( $post_body, $extra_stats );
	}

// Allow for WP_AUTO_UPDATE_CORE to specify beta/RC/development releases.
	if ( defined( 'WP_AUTO_UPDATE_CORE' )
		&& in_array( WP_AUTO_UPDATE_CORE, array( 'beta', 'rc', 'development', 'branch-development' ), true )
	) {
		$query['channel'] = WP_AUTO_UPDATE_CORE;
	}

$url      = 'http://api.wordpress.org/core/version-check/1.7/?' . http_build_query( $query, '', '&' );
	$http_url = $url;
	$ssl      = wp_http_supports( array( 'ssl' ) );

if ( $ssl ) {
		$url = set_url_scheme( $url, 'https' );
	}

$doing_cron = wp_doing_cron();

$options = array(
		'timeout'    => $doing_cron ? 30 : 3,
		'user-agent' => 'WordPress/' . wp_get_wp_version() . '; ' . home_url( '/' ),
		'headers'    => array(
			'wp_install' => $wp_install,
			'wp_blog'    => home_url( '/' ),
		),
		'body'       => $post_body,
	);

$response = wp_remote_post( $url, $options );

if ( $ssl && is_wp_error( $response ) ) {
		wp_trigger_error(
			__FUNCTION__,
			sprintf(
				/* translators: %s: Support forums URL. */
				__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
				__( 'https://wordpress.org/support/forums/' )
			) . ' ' . __( '(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)' ),
			headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE
		);
		$response = wp_remote_post( $http_url, $options );
	}

if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {
		return;
	}

$body = trim( wp_remote_retrieve_body( $response ) );
	$body = json_decode( $body, true );

if ( ! is_array( $body ) || ! isset( $body['offers'] ) ) {
		return;
	}

$offers = $body['offers'];

foreach ( $offers as &$offer ) {
		foreach ( $offer as $offer_key => $value ) {
			if ( 'packages' === $offer_key ) {
				$offer['packages'] = (object) array_intersect_key(
					array_map( 'esc_url', $offer['packages'] ),
					array_fill_keys( array( 'full', 'no_content', 'new_bundled', 'partial', 'rollback' ), '' )
				);
			} elseif ( 'download' === $offer_key ) {
				$offer['download'] = esc_url( $value );
			} else {
				$offer[ $offer_key ] = esc_html( $value );
			}
		}
		$offer = (object) array_intersect_key(
			$offer,
			array_fill_keys(
				array(
					'response',
					'download',
					'locale',
					'packages',
					'current',
					'version',
					'php_version',
					'mysql_version',
					'new_bundled',
					'partial_version',
					'notify_email',
					'support_email',
					'new_files',
				),
				''
			)
		);
	}

$updates                  = new stdClass();
	$updates->updates         = $offers;
	$updates->last_checked    = time();
	$updates->version_checked = wp_get_wp_version();

if ( isset( $body['translations'] ) ) {
		$updates->translations = $body['translations'];
	}

set_site_transient( 'update_core', $updates );

if ( ! empty( $body['ttl'] ) ) {
		$ttl = (int) $body['ttl'];

if ( $ttl && ( time() + $ttl < wp_next_scheduled( 'wp_version_check' ) ) ) {
			// Queue an event to re-run the update check in $ttl seconds.
			wp_schedule_single_event( time() + $ttl, 'wp_version_check' );
		}
	}

// Trigger background updates if running non-interactively, and we weren't called from the update handler.
	if ( $doing_cron && ! doing_action( 'wp_maybe_auto_update' ) ) {
		/**
		 * Fires during wp_cron, starting the auto-update process.
		 *
		 * @since 3.9.0
		 */
		do_action( 'wp_maybe_auto_update' );
	}
}

/**
 * Checks for available updates to plugins based on the latest versions hosted on WordPress.org.
 *
 * Despite its name this function does not actually perform any updates, it only checks for available updates.
 *
 * A list of all plugins installed is sent to api.wordpress.org, along with the site locale.
 *
 * Checks against the WordPress server at api.wordpress.org. Will only check
 * if WordPress isn't installing.
 *
 * @since 2.3.0
 *
 * @param array $extra_stats Extra statistics to report to the WordPress.org API.
 */
function wp_update_plugins( $extra_stats = array() ) {
	if ( wp_installing() ) {
		return;
	}

// If running blog-side, bail unless we've not checked in the last 12 hours.
	if ( ! function_exists( 'get_plugins' ) ) {
		require_once ABSPATH . 'wp-admin/includes/plugin.php';
	}

$plugins      = get_plugins();
	$translations = wp_get_installed_translations( 'plugins' );

$active  = get_option( 'active_plugins', array() );
	$current = get_site_transient( 'update_plugins' );

if ( ! is_object( $current ) ) {
		$current = new stdClass();
	}

$doing_cron = wp_doing_cron();

// Check for update on a different schedule, depending on the page.
	switch ( current_filter() ) {
		case 'upgrader_process_complete':
			$timeout = 0;
			break;
		case 'load-update-core.php':
			$timeout = MINUTE_IN_SECONDS;
			break;
		case 'load-plugins.php':
		case 'load-update.php':
			$timeout = HOUR_IN_SECONDS;
			break;
		default:
			if ( $doing_cron ) {
				$timeout = 2 * HOUR_IN_SECONDS;
			} else {
				$timeout = 12 * HOUR_IN_SECONDS;
			}
	}

$time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked );

if ( $time_not_changed && ! $extra_stats ) {
		$plugin_changed = false;

foreach ( $plugins as $file => $p ) {
			if ( ! isset( $current->checked[ $file ] ) || (string) $current->checked[ $file ] !== (string) $p['Version'] ) {
				$plugin_changed = true;
			}
		}

if ( isset( $current->response ) && is_array( $current->response ) ) {
			foreach ( $current->response as $plugin_file => $update_details ) {
				if ( ! isset( $plugins[ $plugin_file ] ) ) {
					$plugin_changed = true;
					break;
				}
			}
		}

// Bail if we've checked recently and if nothing has changed.
		if ( ! $plugin_changed ) {
			return;
		}
	}

// Update last_checked for current to prevent multiple blocking requests if request hangs.
	$current->last_checked = time();
	set_site_transient( 'update_plugins', $current );

$to_send = compact( 'plugins', 'active' );

$locales = array_values( get_available_languages() );

/**
	 * Filters the locales requested for plugin translations.
	 *
	 * @since 3.7.0
	 * @since 4.5.0 The default value of the `$locales` parameter changed to include all locales.
	 *
	 * @param string[] $locales Plugin locales. Default is all available locales of the site.
	 */
	$locales = apply_filters( 'plugins_update_check_locales', $locales );
	$locales = array_unique( $locales );

if ( $doing_cron ) {
		$timeout = 30; // 30 seconds.
	} else {
		// Three seconds, plus one extra second for every 10 plugins.
		$timeout = 3 + (int) ( count( $plugins ) / 10 );
	}

$options = array(
		'timeout'    => $timeout,
		'body'       => array(
			'plugins'      => wp_json_encode( $to_send ),
			'translations' => wp_json_encode( $translations ),
			'locale'       => wp_json_encode( $locales ),
			'all'          => wp_json_encode( true ),
		),
		'user-agent' => 'WordPress/' . wp_get_wp_version() . '; ' . home_url( '/' ),
	);

if ( $extra_stats ) {
		$options['body']['update_stats'] = wp_json_encode( $extra_stats );
	}

$url      = 'http://api.wordpress.org/plugins/update-check/1.1/';
	$http_url = $url;
	$ssl      = wp_http_supports( array( 'ssl' ) );

if ( $ssl ) {
		$url = set_url_scheme( $url, 'https' );
	}

$raw_response = wp_remote_post( $url, $options );

if ( $ssl && is_wp_error( $raw_response ) ) {
		wp_trigger_error(
			__FUNCTION__,
			sprintf(
				/* translators: %s: Support forums URL. */
				__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
				__( 'https://wordpress.org/support/forums/' )
			) . ' ' . __( '(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)' ),
			headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE
		);
		$raw_response = wp_remote_post( $http_url, $options );
	}

if ( is_wp_error( $raw_response ) || 200 !== wp_remote_retrieve_response_code( $raw_response ) ) {
		return;
	}

$updates               = new stdClass();
	$updates->last_checked = time();
	$updates->response     = array();
	$updates->translations = array();
	$updates->no_update    = array();
	foreach ( $plugins as $file => $p ) {
		$updates->checked[ $file ] = $p['Version'];
	}

$response = json_decode( wp_remote_retrieve_body( $raw_response ), true );

if ( $response && is_array( $response ) ) {
		$updates->response     = $response['plugins'];
		$updates->translations = $response['translations'];
		$updates->no_update    = $response['no_update'];
	}

// Support updates for any plugins using the `Update URI` header field.
	foreach ( $plugins as $plugin_file => $plugin_data ) {
		if ( ! $plugin_data['UpdateURI'] || isset( $updates->response[ $plugin_file ] ) ) {
			continue;
		}

$hostname = wp_parse_url( sanitize_url( $plugin_data['UpdateURI'] ), PHP_URL_HOST );

/**
		 * Filters the update response for a given plugin hostname.
		 *
		 * The dynamic portion of the hook name, `$hostname`, refers to the hostname
		 * of the URI specified in the `Update URI` header field.
		 *
		 * @since 5.8.0
		 *
		 * @param array|false $update {
		 *     The plugin update data with the latest details. Default false.
		 *
		 *     @type string   $id           Optional. ID of the plugin for update purposes, should be a URI
		 *                                  specified in the `Update URI` header field.
		 *     @type string   $slug         Slug of the plugin.
		 *     @type string   $version      The version of the plugin.
		 *     @type string   $url          The URL for details of the plugin.
		 *     @type string   $package      Optional. The update ZIP for the plugin.
		 *     @type string   $tested       Optional. The version of WordPress the plugin is tested against.
		 *     @type string   $requires_php Optional. The version of PHP which the plugin requires.
		 *     @type bool     $autoupdate   Optional. Whether the plugin should automatically update.
		 *     @type string[] $icons        Optional. Array of plugin icons.
		 *     @type string[] $banners      Optional. Array of plugin banners.
		 *     @type string[] $banners_rtl  Optional. Array of plugin RTL banners.
		 *     @type array    $translations {
		 *         Optional. List of translation updates for the plugin.
		 *
		 *         @type string $language   The language the translation update is for.
		 *         @type string $version    The version of the plugin this translation is for.
		 *                                  This is not the version of the language file.
		 *         @type string $updated    The update timestamp of the translation file.
		 *                                  Should be a date in the `YYYY-MM-DD HH:MM:SS` format.
		 *         @type string $package    The ZIP location containing the translation update.
		 *         @type string $autoupdate Whether the translation should be automatically installed.
		 *     }
		 * }
		 * @param array       $plugin_data      Plugin headers.
		 * @param string      $plugin_file      Plugin filename.
		 * @param string[]    $locales          Installed locales to look up translations for.
		 */
		$update = apply_filters( "update_plugins_{$hostname}", false, $plugin_data, $plugin_file, $locales );

if ( ! $update ) {
			continue;
		}

$update = (object) $update;

// Is it valid? We require at least a version.
		if ( ! isset( $update->version ) ) {
			continue;
		}

// These should remain constant.
		$update->id     = $plugin_data['UpdateURI'];
		$update->plugin = $plugin_file;

// WordPress needs the version field specified as 'new_version'.
		if ( ! isset( $update->new_version ) ) {
			$update->new_version = $update->version;
		}

// Handle any translation updates.
		if ( ! empty( $update->translations ) ) {
			foreach ( $update->translations as $translation ) {
				if ( isset( $translation['language'], $translation['package'] ) ) {
					$translation['type'] = 'plugin';
					$translation['slug'] = $update->slug ?? $update->id;

$updates->translations[] = $translation;
				}
			}
		}

unset( $updates->no_update[ $plugin_file ], $updates->response[ $plugin_file ] );

if ( version_compare( $update->new_version, $plugin_data['Version'], '>' ) ) {
			$updates->response[ $plugin_file ] = $update;
		} else {
			$updates->no_update[ $plugin_file ] = $update;
		}
	}

$sanitize_plugin_update_payload = static function ( &$item ) {
		$item = (object) $item;

unset( $item->translations, $item->compatibility );

return $item;
	};

array_walk( $updates->response, $sanitize_plugin_update_payload );
	array_walk( $updates->no_update, $sanitize_plugin_update_payload );

set_site_transient( 'update_plugins', $updates );
}

/**
 * Checks for available updates to themes based on the latest versions hosted on WordPress.org.
 *
 * Despite its name this function does not actually perform any updates, it only checks for available updates.
 *
 * A list of all themes installed is sent to api.wordpress.org, along with the site locale.
 *
 * Checks against the WordPress server at api.wordpress.org. Will only check
 * if WordPress isn't installing.
 *
 * @since 2.7.0
 *
 * @param array $extra_stats Extra statistics to report to the WordPress.org API.
 */
function wp_update_themes( $extra_stats = array() ) {
	if ( wp_installing() ) {
		return;
	}

$installed_themes = wp_get_themes();
	$translations     = wp_get_installed_translations( 'themes' );

$last_update = get_site_transient( 'update_themes' );

if ( ! is_object( $last_update ) ) {
		$last_update = new stdClass();
	}

$themes  = array();
	$checked = array();
	$request = array();

// Put slug of active theme into request.
	$request['active'] = get_option( 'stylesheet' );

foreach ( $installed_themes as $theme ) {
		$checked[ $theme->get_stylesheet() ] = $theme->get( 'Version' );

$themes[ $theme->get_stylesheet() ] = array(
			'Name'       => $theme->get( 'Name' ),
			'Title'      => $theme->get( 'Name' ),
			'Version'    => $theme->get( 'Version' ),
			'Author'     => $theme->get( 'Author' ),
			'Author URI' => $theme->get( 'AuthorURI' ),
			'UpdateURI'  => $theme->get( 'UpdateURI' ),
			'Template'   => $theme->get_template(),
			'Stylesheet' => $theme->get_stylesheet(),
		);
	}

$doing_cron = wp_doing_cron();

// Check for update on a different schedule, depending on the page.
	switch ( current_filter() ) {
		case 'upgrader_process_complete':
			$timeout = 0;
			break;
		case 'load-update-core.php':
			$timeout = MINUTE_IN_SECONDS;
			break;
		case 'load-themes.php':
		case 'load-update.php':
			$timeout = HOUR_IN_SECONDS;
			break;
		default:
			if ( $doing_cron ) {
				$timeout = 2 * HOUR_IN_SECONDS;
			} else {
				$timeout = 12 * HOUR_IN_SECONDS;
			}
	}

$time_not_changed = isset( $last_update->last_checked ) && $timeout > ( time() - $last_update->last_checked );

if ( $time_not_changed && ! $extra_stats ) {
		$theme_changed = false;

foreach ( $checked as $slug => $v ) {
			if ( ! isset( $last_update->checked[ $slug ] ) || (string) $last_update->checked[ $slug ] !== (string) $v ) {
				$theme_changed = true;
			}
		}

if ( isset( $last_update->response ) && is_array( $last_update->response ) ) {
			foreach ( $last_update->response as $slug => $update_details ) {
				if ( ! isset( $checked[ $slug ] ) ) {
					$theme_changed = true;
					break;
				}
			}
		}

// Bail if we've checked recently and if nothing has changed.
		if ( ! $theme_changed ) {
			return;
		}
	}

// Update last_checked for current to prevent multiple blocking requests if request hangs.
	$last_update->last_checked = time();
	set_site_transient( 'update_themes', $last_update );

$request['themes'] = $themes;

$locales = array_values( get_available_languages() );

/**
	 * Filters the locales requested for theme translations.
	 *
	 * @since 3.7.0
	 * @since 4.5.0 The default value of the `$locales` parameter changed to include all locales.
	 *
	 * @param string[] $locales Theme locales. Default is all available locales of the site.
	 */
	$locales = apply_filters( 'themes_update_check_locales', $locales );
	$locales = array_unique( $locales );

if ( $doing_cron ) {
		$timeout = 30; // 30 seconds.
	} else {
		// Three seconds, plus one extra second for every 10 themes.
		$timeout = 3 + (int) ( count( $themes ) / 10 );
	}

$options = array(
		'timeout'    => $timeout,
		'body'       => array(
			'themes'       => wp_json_encode( $request ),
			'translations' => wp_json_encode( $translations ),
			'locale'       => wp_json_encode( $locales ),
		),
		'user-agent' => 'WordPress/' . wp_get_wp_version() . '; ' . home_url( '/' ),
	);

if ( $extra_stats ) {
		$options['body']['update_stats'] = wp_json_encode( $extra_stats );
	}

$url      = 'http://api.wordpress.org/themes/update-check/1.1/';
	$http_url = $url;
	$ssl      = wp_http_supports( array( 'ssl' ) );

if ( $ssl ) {
		$url = set_url_scheme( $url, 'https' );
	}

$raw_response = wp_remote_post( $url, $options );

if ( is_wp_error( $raw_response ) || 200 !== wp_remote_retrieve_response_code( $raw_response ) ) {
		return;
	}

$new_update               = new stdClass();
	$new_update->last_checked = time();
	$new_update->checked      = $checked;

$response = json_decode( wp_remote_retrieve_body( $raw_response ), true );

if ( is_array( $response ) ) {
		$new_update->response     = $response['themes'];
		$new_update->no_update    = $response['no_update'];
		$new_update->translations = $response['translations'];
	}

// Support updates for any themes using the `Update URI` header field.
	foreach ( $themes as $theme_stylesheet => $theme_data ) {
		if ( ! $theme_data['UpdateURI'] || isset( $new_update->response[ $theme_stylesheet ] ) ) {
			continue;
		}

$hostname = wp_parse_url( sanitize_url( $theme_data['UpdateURI'] ), PHP_URL_HOST );

/**
		 * Filters the update response for a given theme hostname.
		 *
		 * The dynamic portion of the hook name, `$hostname`, refers to the hostname
		 * of the URI specified in the `Update URI` header field.
		 *
		 * @since 6.1.0
		 *
		 * @param array|false $update {
		 *     The theme update data with the latest details. Default false.
		 *
		 *     @type string $id           Optional. ID of the theme for update purposes, should be a URI
		 *                                specified in the `Update URI` header field.
		 *     @type string $theme        Directory name of the theme.
		 *     @type string $version      The version of the theme.
		 *     @type string $url          The URL for details of the theme.
		 *     @type string $package      Optional. The update ZIP for the theme.
		 *     @type string $tested       Optional. The version of WordPress the theme is tested against.
		 *     @type string $requires_php Optional. The version of PHP which the theme requires.
		 *     @type bool   $autoupdate   Optional. Whether the theme should automatically update.
		 *     @type array  $translations {
		 *         Optional. List of translation updates for the theme.
		 *
		 *         @type string $language   The language the translation update is for.
		 *         @type string $version    The version of the theme this translation is for.
		 *                                  This is not the version of the language file.
		 *         @type string $updated    The update timestamp of the translation file.
		 *                                  Should be a date in the `YYYY-MM-DD HH:MM:SS` format.
		 *         @type string $package    The ZIP location containing the translation update.
		 *         @type string $autoupdate Whether the translation should be automatically installed.
		 *     }
		 * }
		 * @param array       $theme_data       Theme headers.
		 * @param string      $theme_stylesheet Theme stylesheet.
		 * @param string[]    $locales          Installed locales to look up translations for.
		 */
		$update = apply_filters( "update_themes_{$hostname}", false, $theme_data, $theme_stylesheet, $locales );

if ( ! $update ) {
			continue;
		}

$update = (object) $update;

// Is it valid? We require at least a version.
		if ( ! isset( $update->version ) ) {
			continue;
		}

// This should remain constant.
		$update->id = $theme_data['UpdateURI'];

// WordPress needs the version field specified as 'new_version'.
		if ( ! isset( $update->new_version ) ) {
			$update->new_version = $update->version;
		}

// Handle any translation updates.
		if ( ! empty( $update->translations ) ) {
			foreach ( $update->translations as $translation ) {
				if ( isset( $translation['language'], $translation['package'] ) ) {
					$translation['type'] = 'theme';
					$translation['slug'] = $update->theme ?? $update->id;

$new_update->translations[] = $translation;
				}
			}
		}

unset( $new_update->no_update[ $theme_stylesheet ], $new_update->response[ $theme_stylesheet ] );

if ( version_compare( $update->new_version, $theme_data['Version'], '>' ) ) {
			$new_update->response[ $theme_stylesheet ] = (array) $update;
		} else {
			$new_update->no_update[ $theme_stylesheet ] = (array) $update;
		}
	}

set_site_transient( 'update_themes', $new_update );
}

/**
 * Performs WordPress automatic background updates.
 *
 * Updates WordPress core plus any plugins and themes that have automatic updates enabled.
 *
 * @since 3.7.0
 */
function wp_maybe_auto_update() {
	require_once ABSPATH . 'wp-admin/includes/admin.php';
	require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';

$upgrader = new WP_Automatic_Updater();
	$upgrader->run();
}

/**
 * Retrieves a list of all language updates available.
 *
 * @since 3.7.0
 *
 * @return object[] Array of translation objects that have available updates.
 */
function wp_get_translation_updates() {
	$updates    = array();
	$transients = array(
		'update_core'    => 'core',
		'update_plugins' => 'plugin',
		'update_themes'  => 'theme',
	);

foreach ( $transients as $transient => $type ) {
		$transient = get_site_transient( $transient );

if ( empty( $transient->translations ) ) {
			continue;
		}

foreach ( $transient->translations as $translation ) {
			$updates[] = (object) $translation;
		}
	}

return $updates;
}

/**
 * Collects counts and UI strings for available updates.
 *
 * @since 3.3.0
 *
 * @return array {
 *     Fetched update data.
 *
 *     @type int[]   $counts       An array of counts for available plugin, theme, and WordPress updates.
 *     @type string  $update_title Titles of available updates.
 * }
 */
function wp_get_update_data() {
	$counts = array(
		'plugins'      => 0,
		'themes'       => 0,
		'wordpress'    => 0,
		'translations' => 0,
	);

$plugins = current_user_can( 'update_plugins' );

if ( $plugins ) {
		$update_plugins = get_site_transient( 'update_plugins' );

if ( ! empty( $update_plugins->response ) ) {
			$counts['plugins'] = count( $update_plugins->response );
		}
	}

$themes = current_user_can( 'update_themes' );

if ( $themes ) {
		$update_themes = get_site_transient( 'update_themes' );

if ( ! empty( $update_themes->response ) ) {
			$counts['themes'] = count( $update_themes->response );
		}
	}

$core = current_user_can( 'update_core' );

if ( $core && function_exists( 'get_core_updates' ) ) {
		$update_wordpress = get_core_updates( array( 'dismissed' => false ) );

if ( ! empty( $update_wordpress )
			&& ! in_array( $update_wordpress[0]->response, array( 'development', 'latest' ), true )
			&& current_user_can( 'update_core' )
		) {
			$counts['wordpress'] = 1;
		}
	}

if ( ( $core || $plugins || $themes ) && wp_get_translation_updates() ) {
		$counts['translations'] = 1;
	}

$counts['total'] = $counts['plugins'] + $counts['themes'] + $counts['wordpress'] + $counts['translations'];
	$titles          = array();

if ( $counts['wordpress'] ) {
		/* translators: %d: Number of available WordPress updates. */
		$titles['wordpress'] = sprintf( __( '%d WordPress Update' ), $counts['wordpress'] );
	}

if ( $counts['plugins'] ) {
		/* translators: %d: Number of available plugin updates. */
		$titles['plugins'] = sprintf( _n( '%d Plugin Update', '%d Plugin Updates', $counts['plugins'] ), $counts['plugins'] );
	}

if ( $counts['themes'] ) {
		/* translators: %d: Number of available theme updates. */
		$titles['themes'] = sprintf( _n( '%d Theme Update', '%d Theme Updates', $counts['themes'] ), $counts['themes'] );
	}

if ( $counts['translations'] ) {
		$titles['translations'] = __( 'Translation Updates' );
	}

$update_title = $titles ? esc_attr( implode( ', ', $titles ) ) : '';

$update_data = array(
		'counts' => $counts,
		'title'  => $update_title,
	);
	/**
	 * Filters the returned array of update data for plugins, themes, and WordPress core.
	 *
	 * @since 3.5.0
	 *
	 * @param array $update_data {
	 *     Fetched update data.
	 *
	 *     @type int[]   $counts       An array of counts for available plugin, theme, and WordPress updates.
	 *     @type string  $update_title Titles of available updates.
	 * }
	 * @param array $titles An array of update counts and UI strings for available updates.
	 */
	return apply_filters( 'wp_get_update_data', $update_data, $titles );
}

/**
 * Determines whether core should be updated.
 *
 * @since 2.8.0
 */
function _maybe_update_core() {
	$current = get_site_transient( 'update_core' );

if ( isset( $current->last_checked, $current->version_checked )
		&& 12 * HOUR_IN_SECONDS > ( time() - $current->last_checked )
		&& wp_get_wp_version() === $current->version_checked
	) {
		return;
	}

wp_version_check();
}
/**
 * Checks the last time plugins were run before checking plugin versions.
 *
 * This might have been backported to WordPress 2.6.1 for performance reasons.
 * This is used for the wp-admin to check only so often instead of every page
 * load.
 *
 * @since 2.7.0
 * @access private
 */
function _maybe_update_plugins() {
	$current = get_site_transient( 'update_plugins' );

if ( isset( $current->last_checked )
		&& 12 * HOUR_IN_SECONDS > ( time() - $current->last_checked )
	) {
		return;
	}

wp_update_plugins();
}

/**
 * Checks themes versions only after a duration of time.
 *
 * This is for performance reasons to make sure that on the theme version
 * checker is not run on every page load.
 *
 * @since 2.7.0
 * @access private
 */
function _maybe_update_themes() {
	$current = get_site_transient( 'update_themes' );

if ( isset( $current->last_checked )
		&& 12 * HOUR_IN_SECONDS > ( time() - $current->last_checked )
	) {
		return;
	}

wp_update_themes();
}

/**
 * Schedules core, theme, and plugin update checks.
 *
 * @since 3.1.0
 */
function wp_schedule_update_checks() {
	if ( ! wp_next_scheduled( 'wp_version_check' ) && ! wp_installing() ) {
		wp_schedule_event( time(), 'twicedaily', 'wp_version_check' );
	}

if ( ! wp_next_scheduled( 'wp_update_plugins' ) && ! wp_installing() ) {
		wp_schedule_event( time(), 'twicedaily', 'wp_update_plugins' );
	}

if ( ! wp_next_scheduled( 'wp_update_themes' ) && ! wp_installing() ) {
		wp_schedule_event( time(), 'twicedaily', 'wp_update_themes' );
	}
}

/**
 * Clears existing update caches for plugins, themes, and core.
 *
 * @since 4.1.0
 */
function wp_clean_update_cache() {
	if ( function_exists( 'wp_clean_plugins_cache' ) ) {
		wp_clean_plugins_cache();
	} else {
		delete_site_transient( 'update_plugins' );
	}

wp_clean_themes_cache();

delete_site_transient( 'update_core' );
}

/**
 * Schedules the removal of all contents in the temporary backup directory.
 *
 * @since 6.3.0
 */
function wp_delete_all_temp_backups() {
	/*
	 * Check if there is a lock, or if currently performing an Ajax request,
	 * in which case there is a chance an update is running.
	 * Reschedule for an hour from now and exit early.
	 */
	if ( get_option( 'core_updater.lock' ) || get_option( 'auto_updater.lock' ) || wp_doing_ajax() ) {
		wp_schedule_single_event( time() + HOUR_IN_SECONDS, 'wp_delete_temp_updater_backups' );
		return;
	}

// This action runs on shutdown to make sure there are no plugin updates currently running.
	add_action( 'shutdown', '_wp_delete_all_temp_backups' );
}

/**
 * Deletes all contents in the temporary backup directory.
 *
 * @since 6.3.0
 *
 * @access private
 *
 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
 */
function _wp_delete_all_temp_backups() {
	global $wp_filesystem;

if ( ! function_exists( 'WP_Filesystem' ) ) {
		require_once ABSPATH . 'wp-admin/includes/file.php';
	}

ob_start();
	$credentials = request_filesystem_credentials( '' );
	ob_end_clean();

if ( false === $credentials || ! WP_Filesystem( $credentials ) ) {
		wp_trigger_error( __FUNCTION__, __( 'Could not access filesystem.' ) );
		return;
	}

if ( ! $wp_filesystem->wp_content_dir() ) {
		wp_trigger_error(
			__FUNCTION__,
			/* translators: %s: Directory name. */
			sprintf( __( 'Unable to locate WordPress content directory (%s).' ), 'wp-content' )
		);
		return;
	}

$temp_backup_dir = $wp_filesystem->wp_content_dir() . 'upgrade-temp-backup/';
	$dirlist         = $wp_filesystem->dirlist( $temp_backup_dir );
	$dirlist         = $dirlist ? $dirlist : array();

foreach ( array_keys( $dirlist ) as $dir ) {
		if ( '.' === $dir || '..' === $dir ) {
			continue;
		}

$wp_filesystem->delete( $temp_backup_dir . $dir, true );
	}
}

if ( ( ! is_main_site() && ! is_network_admin() ) || wp_doing_ajax() ) {
	return;
}

add_action( 'admin_init', '_maybe_update_core' );
add_action( 'wp_version_check', 'wp_version_check' );

add_action( 'load-plugins.php', 'wp_update_plugins' );
add_action( 'load-update.php', 'wp_update_plugins' );
add_action( 'load-update-core.php', 'wp_update_plugins' );
add_action( 'admin_init', '_maybe_update_plugins' );
add_action( 'wp_update_plugins', 'wp_update_plugins' );

add_action( 'load-themes.php', 'wp_update_themes' );
add_action( 'load-update.php', 'wp_update_themes' );
add_action( 'load-update-core.php', 'wp_update_themes' );
add_action( 'admin_init', '_maybe_update_themes' );
add_action( 'wp_update_themes', 'wp_update_themes' );

add_action( 'update_option_WPLANG', 'wp_clean_update_cache', 10, 0 );

add_action( 'wp_maybe_auto_update', 'wp_maybe_auto_update' );

add_action( 'init', 'wp_schedule_update_checks' );

add_action( 'wp_delete_temp_updater_backups', 'wp_delete_all_temp_backups' );

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