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I'm trying to use the pam_exec.so PAM module to execute a script which needs to know the username/password coming from the application (OpenVPN in this case).

I have a script that executes printenv >>afile, but I don't see all the environment variables that the man pages states that pam_exec.so exports (namely PAM_USER I think), I only see the following:

PAM_SERVICE=openvpn
PAM_TYPE=auth
PWD=/usr/local/openvpn/bin
SHLVL=1
A__z="*SHLVL

I do successfully pick up the password off of STDIN and output it with this same script. But for the life of me I can't get the username.

Any thoughts on what I should try next?

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1 Answer 1

What distribution are you using? RHEL and CentOS use pam 0.99. There's currently a bug open for this issue (https://bugzilla.redhat.com/show_bug.cgi?id=554518) but I believe they're just using an ancient version of PAM.

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