/**
  * AJAX callback to create a secret URL for the system info.
  *
  * @access private
  * @since  8.3
  * @static
  */
 public static function generateSystemInfoURL()
 {
     if (!check_ajax_referer('generate_remote_system_info_url', FALSE, FALSE)) {
         wp_send_json_error(__('Invalid AJAX action or nonce validation failed.', 'connections'));
     }
     if (!current_user_can('manage_options')) {
         wp_send_json_error(__('You do not have sufficient permissions to perform this action.', 'connections'));
     }
     /** @todo need to check the $token is not WP_Error. */
     $token = cnString::random(32);
     $expires = apply_filters('cn_system_info_remote_token_expire', DAY_IN_SECONDS * 3);
     cnCache::set('system_info_remote_token', $token, $expires, 'option-cache');
     $url = home_url() . '/?cn-system-info=' . $token;
     wp_send_json_success(array('url' => $url, 'message' => __('Secret URL has been created.', 'connections')));
 }