<?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' ) ) {

die( '-1' );

}

/**

* 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 ( $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;

}

$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' );

}