+ /**
+ * Filter the locale requested for WordPress core translations.
+ *
+ * @since 2.8.0
+ *
+ * @param string $locale Current locale.
+ */
+ $locale = apply_filters( 'core_version_check_locale', $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_version' ) )
+ $mysql_version = preg_replace('/[^0-9.].*/', '', $wpdb->db_version());
+ else
+ $mysql_version = 'N/A';
+
+ if ( is_multisite() ) {
+ $user_count = get_user_count();
+ $num_blogs = get_blog_count();
+ $wp_install = network_site_url();
+ $multisite_enabled = 1;
+ } else {
+ $user_count = count_users();
+ $user_count = $user_count['total_users'];
+ $multisite_enabled = 0;
+ $num_blogs = 1;
+ $wp_install = home_url( '/' );
+ }
+
+ $query = array(
+ 'version' => $wp_version,
+ 'php' => $php_version,
+ 'locale' => $locale,
+ 'mysql' => $mysql_version,
+ 'local_package' => isset( $wp_local_package ) ? $wp_local_package : '',
+ 'blogs' => $num_blogs,
+ 'users' => $user_count,
+ 'multisite_enabled' => $multisite_enabled,
+ );
+
+ $post_body = array(
+ 'translations' => wp_json_encode( $translations ),
+ );
+
+ if ( is_array( $extra_stats ) )
+ $post_body = array_merge( $post_body, $extra_stats );
+
+ $url = $http_url = 'http://api.wordpress.org/core/version-check/1.7/?' . http_build_query( $query, null, '&' );
+ if ( $ssl = wp_http_supports( array( 'ssl' ) ) )
+ $url = set_url_scheme( $url, 'https' );
+
+ $options = array(
+ 'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3 ),
+ 'user-agent' => 'WordPress/' . $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 ) ) {
+ trigger_error( __( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="https://wordpress.org/support/">support forums</a>.' ) . ' ' . __( '(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 false;
+
+ $body = trim( wp_remote_retrieve_body( $response ) );
+ $body = json_decode( $body, true );
+
+ if ( ! is_array( $body ) || ! isset( $body['offers'] ) )
+ return false;
+
+ $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_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 a background updates check if running non-interactively, and we weren't called from the update handler.
+ if ( defined( 'DOING_CRON' ) && DOING_CRON && ! doing_action( 'wp_maybe_auto_update' ) ) {
+ do_action( 'wp_maybe_auto_update' );
+ }
+}
+
+/**
+ * Check plugin versions against the latest versions hosted on WordPress.org.
+ *
+ * The WordPress version, PHP version, and Locale is sent along with a list of
+ * all plugins installed. Checks against the WordPress server at
+ * api.wordpress.org. Will only check if WordPress isn't installing.
+ *
+ * @since 2.3.0
+ * @uses $wp_version Used to notify the WordPress version.
+ *
+ * @param array $extra_stats Extra statistics to report to the WordPress.org API.
+ * @return false|null Returns null if update is unsupported. Returns false if check is too soon.
+ */
+function wp_update_plugins( $extra_stats = array() ) {
+ include( ABSPATH . WPINC . '/version.php' ); // include an unmodified $wp_version
+
+ if ( defined('WP_INSTALLING') )
+ return false;
+
+ // 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;
+
+ $new_option = new stdClass;
+ $new_option->last_checked = time();
+
+ // 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 ( defined( 'DOING_CRON' ) && DOING_CRON ) {
+ $timeout = 0;
+ } 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 ) {
+ $new_option->checked[ $file ] = $p['Version'];
+
+ if ( !isset( $current->checked[ $file ] ) || strval($current->checked[ $file ]) !== strval($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 false;
+ }
+
+ // 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( get_locale() );
+ /**
+ * Filter the locales requested for plugin translations.
+ *
+ * @since 3.7.0
+ *
+ * @param array $locales Plugin locale. Default is current locale of the site.
+ */
+ $locales = apply_filters( 'plugins_update_check_locales', $locales );
+
+ if ( defined( 'DOING_CRON' ) && DOING_CRON ) {
+ $timeout = 30;
+ } 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_version . '; ' . get_bloginfo( 'url' )
+ );
+
+ if ( $extra_stats ) {
+ $options['body']['update_stats'] = wp_json_encode( $extra_stats );
+ }
+
+ $url = $http_url = 'http://api.wordpress.org/plugins/update-check/1.1/';
+ if ( $ssl = wp_http_supports( array( 'ssl' ) ) )
+ $url = set_url_scheme( $url, 'https' );
+
+ $raw_response = wp_remote_post( $url, $options );
+ if ( $ssl && is_wp_error( $raw_response ) ) {
+ trigger_error( __( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="https://wordpress.org/support/">support forums</a>.' ) . ' ' . __( '(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 false;
+
+ $response = json_decode( wp_remote_retrieve_body( $raw_response ), true );
+ foreach ( $response['plugins'] as &$plugin ) {
+ $plugin = (object) $plugin;
+ }
+ unset( $plugin );
+ foreach ( $response['no_update'] as &$plugin ) {
+ $plugin = (object) $plugin;
+ }
+ unset( $plugin );
+
+ if ( is_array( $response ) ) {
+ $new_option->response = $response['plugins'];
+ $new_option->translations = $response['translations'];
+ // TODO: Perhaps better to store no_update in a separate transient with an expiry?
+ $new_option->no_update = $response['no_update'];
+ } else {
+ $new_option->response = array();
+ $new_option->translations = array();
+ $new_option->no_update = array();
+ }
+
+ set_site_transient( 'update_plugins', $new_option );
+}
+
+/**
+ * Check theme versions against the latest versions hosted on WordPress.org.
+ *
+ * A list of all themes installed in sent to WP. Checks against the
+ * WordPress server at api.wordpress.org. Will only check if WordPress isn't
+ * installing.
+ *
+ * @since 2.7.0
+ * @uses $wp_version Used to notify the WordPress version.
+ *
+ * @param array $extra_stats Extra statistics to report to the WordPress.org API.
+ * @return false|null Returns null if update is unsupported. Returns false if check is too soon.
+ */
+function wp_update_themes( $extra_stats = array() ) {
+ include( ABSPATH . WPINC . '/version.php' ); // include an unmodified $wp_version
+
+ if ( defined( 'WP_INSTALLING' ) )
+ return false;
+
+ $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 = $checked = $request = array();
+
+ // Put slug of current 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'),
+ 'Template' => $theme->get_template(),
+ 'Stylesheet' => $theme->get_stylesheet(),
+ );
+ }
+
+ // 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 ( defined( 'DOING_CRON' ) && DOING_CRON ) {
+ $timeout = 0;
+ } 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[ $slug ] ) || strval($last_update->checked[ $slug ]) !== strval($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 false;
+ }
+
+ // 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( get_locale() );
+ /**
+ * Filter the locales requested for theme translations.
+ *
+ * @since 3.7.0
+ *
+ * @param array $locales Theme locale. Default is current locale of the site.
+ */
+ $locales = apply_filters( 'themes_update_check_locales', $locales );