public function authenticate($redirectUrl, $hostedDomain, $legacyRealm = NULL)
{
$jwt = HttpUtil::getJWTFromHeader();
$jwtPayload = self::getValidatedJWTPayload($jwt);
if ($jwtPayload == NULL) {
$requestError = filter_input(INPUT_GET, 'error');
if (isset($requestError)) {
self::logErrorAndClearCache($requestError);
HttpUtil::replyError(500, $requestError);
}
$requestState = filter_input(INPUT_GET, 'state');
$requestCode = filter_input(INPUT_GET, 'code');
if (!isset($requestState)) {
$this->requestAuthCode($redirectUrl, $hostedDomain, $legacyRealm);
} else {
if ($requestState != $this->getAntiForgeryStateToken(FALSE)) {
self::logErrorAndClearCache("Invalid state parameter: expected '" . $this->getAntiForgeryStateToken(FALSE) . "' but got '{$requestState}'.\n{$_SERVER['REQUEST_URI']}");
HttpUtil::replyError(401, 'Invalid state parameter');
} else {
if (isset($requestCode)) {
$jwt = $this->exchangeCodeForJWT($requestCode, $redirectUrl);
// Temporarilly store the JWT in the session.
SessionCache::set(self::$PARKED_JWT_CACHE_KEY, $jwt);
}
}
}
}
}