OTP support

vpnserver.go

@@ -102,13 +102,13 @@ func (s *OpenVpnMgt) Restart(pid int) error {
 	return nil
 }
 
-func (s *OpenVpnMgt) AuthUserPass(pid int, user, pass string) error {
+func (s *OpenVpnMgt) AuthUserPass(pid int, user, pass, otp string) error {
 	// check if the session is valid
 	err, session := s.GetSession(pid)
 	if err != nil {
 		return err
 	}
-	session.AuthUserPass(user, pass)
+	session.AuthUserPass(user, pass, otp)
 	return nil
 }