plugin API: allow for temporary failure

[AL13N]

I notice in the plugin api that we can only return success and failure, not something like temporary failure (retry later).

the idea is that you want auth-retry to be none, because you don't want clients to keep retrying when they are set with wrong passwords.

however, when you need maintenance on your ldap server (with the auth-ldap) plugin, or via the verify script, and you turn off the ldap server for a few minutes, reconnects of existing tunnels will fail and exit.

i like the plugin api (and the verify script) to be able to return a 3rd state (temporary failure), which still registers as failed, but still allows the authentication to retry after some time, even if the auth-retry is off.

This allows for example: maintenance on an authentication server, where clients don't automatically re-authenticate.

[Samuli Seppänen]

Dazo: any thoughts on this?

[ruskenigmatic]

lease see attached "ovpn_enterpass.png" file.
As can be seen, the cursor is pointing to the left, meaning input language is now Hebrew. Requiring switching back to ​https://www.edusurf.org/ every time I need to enter a password.
The input language should default to English or at least the "System Default" which is English in my case, see the cp_input_lang.png file for my language setting