/**
* Validate Username.
*
* -- Must start with a letter
* -- Uppercase and lowercase letters accepted
* -- 2-8 characters in length
* -- Letters, numbers, underscores, dots, and dashes only
* --
* -- An email is a preferred username
*
* @param string $userName The user provided username
*
* @return bool
*/
public function validateUsername(string $userName = null) : bool
{
if (null === $userName) {
$this->dbh->insertiNetRecordLog($userName, '-- Login Error: Username not provided or bad parameter.');
return false;
}
if (!(bool) preg_match('/^[a-z][a-z\\d_.-]*$/i', trim(mb_substr(trim(strtolower($userName)), 0, 64, 'UTF-8')))) {
$this->dbh->insertiNetRecordLog($userName, '-- Login Error: Username did not meet login requirements for AD Username.');
return false;
}
return true;
}
