/** * Builds XHTML to display the control. * The main purpose of this overloading is to display a warning when https * is not supported by the server * @param string $data Unused * @param string $query * @return string XHTML */ public function output_html($data, $query = '') { global $CFG, $OUTPUT; $html = parent::output_html($data, $query); if ((string) $data === $this->yes) { require_once $CFG->dirroot . "/lib/filelib.php"; $curl = new curl(); $httpswwwroot = str_replace('http:', 'https:', $CFG->wwwroot); //force https url $curl->head($httpswwwroot . "/login/index.php"); $info = $curl->get_info(); if (empty($info['http_code']) or $info['http_code'] >= 400) { $html .= $OUTPUT->notification(get_string('nohttpsformobilewarning', 'admin')); } } return $html; }