From f71b16fd5d7743b99b85ba921cb565f7b82acf13 Mon Sep 17 00:00:00 2001
From: Phillip Heller <pheller@me.com>
Date: Sat, 4 Oct 2025 21:50:40 -0600
Subject: [PATCH] Handle birthdate omitted during enrollment; treat 999999 as
 nil.

Fixes #112.
---
 apps/server/lib/prodigy/server/service/profile.ex | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/apps/server/lib/prodigy/server/service/profile.ex b/apps/server/lib/prodigy/server/service/profile.ex
index 1e2cd58..e58e463 100644
--- a/apps/server/lib/prodigy/server/service/profile.ex
+++ b/apps/server/lib/prodigy/server/service/profile.ex
@@ -1,4 +1,4 @@
-# Copyright 2022, Phillip Heller
+# Copyright 2022-2025, Phillip Heller
 #
 # This file is part of Prodigy Reloaded.
 #
@@ -41,6 +41,8 @@ defmodule Prodigy.Server.Service.Profile do
     Timex.parse!(input, "{0M}{0D}{YY}") |> Timex.to_date()
   end
 
+  defp to2digitdate("999999"), do: nil  # enrollment sends this when client omits birthdate
+
   defp to2digitdate(input) do
     parsed_date = todate(input)
     if parsed_date.year >= 2039 do
@@ -173,7 +175,7 @@ defmodule Prodigy.Server.Service.Profile do
   def get_tac(tac, user, household) do
     res = get_value(tac, user, household)
 
-    <<tac::16-big>> <>
+    res = <<tac::16-big>> <>
       case res do
         nil -> <<0x0>>
         _ -> <<byte_size(res), res::binary>>
@@ -275,6 +277,8 @@ defmodule Prodigy.Server.Service.Profile do
       0x2C2 -> user.prf_last_logon_date
       0x2C4 -> user.prf_last_logon_time
       0x2FB -> user.prf_madmaze_save
+      0x183 -> "0H12AX6"
+      0x18A -> "     "
 
       _ ->
         Logger.error("User requested profile value for unhandled TAC #{inspect(tac, base: :hex)}")