function getUser(SimpleSAML_Session $session, ConfigProxy $janus_config)
{
    // Get data from config
    /** @var string $useridattr */
    $useridattr = $janus_config->getValue('useridattr', 'eduPersonPrincipalName');
    // Validate user
    $attributes = $session->getAttributes();
    // Check if userid exists
    if (!isset($attributes[$useridattr])) {
        echo json_encode(array('status' => 'user_id_is_missing'));
        exit;
    }
    $userid = $attributes[$useridattr][0];
    $user = new sspmod_janus_User();
    $user->setUserid($userid);
    $user->load(sspmod_janus_User::USERID_LOAD);
    return $user;
}