AuthenticationException.php

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<?php

class CAS_AuthenticationException extends RuntimeException implements CAS_Exception
{

    public function __construct(
        $client,
        $failure,
        $cas_url,
        $no_response,
        $bad_response = '',
        $cas_response = '',
        $err_code = '',
        $err_msg = ''
    ) {
        $messages = array();
        phpCAS::traceBegin();
        $lang = $client->getLangObj();
        $client->printHTMLHeader($lang->getAuthenticationFailed());
        printf(
            $lang->getYouWereNotAuthenticated(),
            htmlentities($client->getURL()),
            isset($_SERVER['SERVER_ADMIN']) ? $_SERVER['SERVER_ADMIN']:''
        );
        phpCAS::trace($messages[] = 'CAS URL: ' . $cas_url);
        phpCAS::trace($messages[] = 'Authentication failure: ' . $failure);
        if ($no_response) {
            phpCAS::trace($messages[] = 'Reason: no response from the CAS server');
        } else {
            if ($bad_response) {
                phpCAS::trace($messages[] = 'Reason: bad response from the CAS server');
            } else {
                switch ($client->getServerVersion()) {
                case CAS_VERSION_1_0:
                    phpCAS::trace($messages[] = 'Reason: CAS error');
                    break;
                case CAS_VERSION_2_0:
                case CAS_VERSION_3_0:
                    if (empty($err_code)) {
                        phpCAS::trace($messages[] = 'Reason: no CAS error');
                    } else {
                        phpCAS::trace($messages[] = 'Reason: [' . $err_code . '] CAS error: ' . $err_msg);
                    }
                    break;
                }
            }
            phpCAS::trace($messages[] = 'CAS response: ' . $cas_response);
        }
        $client->printHTMLFooter();
        phpCAS::traceExit();

        parent::__construct(implode("\n", $messages));
    }
}