Authentication fails for users not available via libc

[busbey]

Right now users authenticated via PAM are conflated with users local to the box.

Steps to reproduce:

1) set up a PAM service that authenticates external to the system, ie pam_ldap (but do not make this login)

2) do not set up a local user with the same name

3) use libpam4j to authenticate

Ideally, the libc based information should be optional additional info.

[eskatos]

:+1: This prevent implementing Radius authentication through PAM

[eskatos]

@busbey looks like you started working on this on your fork, could you tell us about it?

[busbey]

I think I got this working on my fork. I'll see if it's in condition for a PR

[eskatos]

\o/

[busbey]

there's a pull request on current master. FYI, it's a breaking change because of the API alteration.