chamilo / chamilo-lms

        }

        // open and read the URL

        if (!$this->readURL($validate_url, ''/*cookies*/, $headers, $text_response, $err_msg)) {

            phpCAS::trace('could not open URL \'' . $validate_url . '\' to validate (' . $err_msg . ')');

            $this->authError('ST not validated',

                $validate_url,

                true/*$no_response*/);

        }

        // analyze the result depending on the version

        switch ($this->getServerVersion()) {

        $validate_url = $this->getServerSamlValidateURL();

        // open and read the URL

        if (!$this->readURL($validate_url, ''/*cookies*/, $headers, $text_response, $err_msg)) {

            phpCAS::trace('could not open URL \'' . $validate_url . '\' to validate (' . $err_msg . ')');

            $this->authError('SA not validated', $validate_url, true/*$no_response*/);

        }

        phpCAS::trace('server version: ' . $this->getServerVersion());

        }

        // open and read the URL

        if (!$this->readURL($validate_url, ''/*cookies*/, $headers, $text_response, $err_msg)) {

            phpCAS::trace('could not open URL \'' . $validate_url . '\' to validate (' . $err_msg . ')');

            $this->authError('PT not validated',

                $validate_url,

                true/*$no_response*/);

        }

        // read the response of the CAS server into a DOM object

        if (!($dom = domxml_open_mem($text_response))) {