+
+ // Check for update on a different schedule, depending on the page.
+ switch ( current_filter() ) {
+ case 'load-update-core.php' :
+ $timeout = 60; // 1 min
+ break;
+ case 'load-themes.php' :
+ case 'load-update.php' :
+ $timeout = 3600; // 1 hour
+ break;
+ default :
+ $timeout = 43200; // 12 hours
+ }
+
+ $time_not_changed = isset( $last_update->last_checked ) && $timeout > ( time( ) - $last_update->last_checked );
+
+ if ( $time_not_changed ) {
+ $theme_changed = false;
+ foreach ( $checked as $slug => $v ) {
+ $update_request->checked[ $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 );
+
+ $options = array(
+ 'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3),
+ 'body' => array( 'themes' => serialize( $themes ) ),
+ 'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
+ );
+
+ $raw_response = wp_remote_post( 'http://api.wordpress.org/themes/update-check/1.0/', $options );
+
+ if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) )
+ return false;
+
+ $new_update = new stdClass;
+ $new_update->last_checked = time( );
+ $new_update->checked = $checked;
+
+ $response = maybe_unserialize( wp_remote_retrieve_body( $raw_response ) );
+ if ( is_array( $response ) )
+ $new_update->response = $response;
+
+ set_site_transient( 'update_themes', $new_update );
+}
+
+/*
+ * Collect counts and UI strings for available updates
+ *
+ * @since 3.3.0
+ *
+ * @return array
+ */
+function wp_get_update_data() {
+ $counts = array( 'plugins' => 0, 'themes' => 0, 'wordpress' => 0 );
+
+ if ( current_user_can( 'update_plugins' ) ) {
+ $update_plugins = get_site_transient( 'update_plugins' );
+ if ( ! empty( $update_plugins->response ) )
+ $counts['plugins'] = count( $update_plugins->response );
+ }
+
+ if ( current_user_can( 'update_themes' ) ) {
+ $update_themes = get_site_transient( 'update_themes' );
+ if ( ! empty( $update_themes->response ) )
+ $counts['themes'] = count( $update_themes->response );
+ }
+
+ if ( function_exists( 'get_core_updates' ) && current_user_can( 'update_core' ) ) {
+ $update_wordpress = get_core_updates( array('dismissed' => false) );
+ if ( ! empty( $update_wordpress ) && ! in_array( $update_wordpress[0]->response, array('development', 'latest') ) && current_user_can('update_core') )
+ $counts['wordpress'] = 1;
+ }
+
+ $counts['total'] = $counts['plugins'] + $counts['themes'] + $counts['wordpress'];
+ $update_title = array();
+ if ( $counts['wordpress'] )
+ $update_title[] = sprintf(__('%d WordPress Update'), $counts['wordpress']);
+ if ( $counts['plugins'] )
+ $update_title[] = sprintf(_n('%d Plugin Update', '%d Plugin Updates', $counts['plugins']), $counts['plugins']);
+ if ( $counts['themes'] )
+ $update_title[] = sprintf(_n('%d Theme Update', '%d Theme Updates', $counts['themes']), $counts['themes']);
+
+ $update_title = ! empty( $update_title ) ? esc_attr( implode( ', ', $update_title ) ) : '';
+
+ return array( 'counts' => $counts, 'title' => $update_title );