auth_resp_x_vouch_user is always homeassistant for all users with home assistant provider

[ivanjx]

Describe the problem
i am trying to implement basic authorization per domain with openresty following the examples provided in this repo. however for all the users on my home assistant, the auth_resp_x_vouch_user is always homeassistant.

Expected behavior
auth_resp_x_vouch_user should be the same as the home assistant username.

Desktop (please complete the following information):

• OS: Linux
• Browser: Brave
• Version: 1.67.116

Additional context
configs and scripts: https://gist.github.com/ivanjx/1a08d6e0413cb6b9bb8302ebe7db9de1

nginx log output:

2024/06/27 17:16:22 [error] 7#7: *12 [lua] user_auth.lua:28: VOUCH USER GNAME: homeassistant!

[ivanjx]

sorry for not looking into the HA integration code before opening this issue. i realized that HA does not even provide an api to query the username. however i am trying to merge changes that could make this happen.

home-assistant/core#120811