Method login

/**
 * Method to login to a server once connected
 *
 * @param   string  $user  Username to login to the server
 * @param   string  $pass  Password to login to the server
 *
 * @return  boolean  True if successful
 *
 * @since   1.5
 */
public function login($user = 'anonymous', $pass = 'jftp@joomla.org')
{
    // If native FTP support is enabled let's use it...
    if (FTP_NATIVE) {
        if (@ftp_login($this->_conn, $user, $pass) === false) {
            Log::add('JFtp::login: Unable to login', Log::WARNING, 'jerror');
            return false;
        }
        return true;
    }
    // Send the username
    if (!$this->_putCmd('USER ' . $user, array(331, 503))) {
        Log::add(Text::sprintf('JLIB_CLIENT_ERROR_FTP_BAD_USERNAME', __METHOD__, $this->_response, $user), Log::WARNING, 'jerror');
        return false;
    }
    // If we are already logged in, continue :)
    if ($this->_responseCode == 503) {
        return true;
    }
    // Send the password
    if (!$this->_putCmd('PASS ' . $pass, 230)) {
        Log::add(Text::sprintf('JLIB_CLIENT_ERROR_FTP_BAD_PASSWORD', __METHOD__, $this->_response, str_repeat('*', \strlen($pass))), Log::WARNING, 'jerror');
        return false;
    }
    return true;
}