pam-script - a PAM module that can invoke scripts within the PAM stack.
pam-script allows you to execute scripts during authorization, passwd
changes, and on session opening or closing.
Such scripts can perform necessary tasks or influence the outcome of
the PAM stack. For example, if the following entry was included in
sshd auth required pam_script
then if the script, pam_script_auth, exits with a non-zero value this
would cause the user to be denied SSH access to the machine.
A summary of options is included below.
the default behavior if the module can not find or execute the
script. The default is to fail if the option is not given.
where to find the pam-scripts to invoke for each of the various
module-types as described below. The default is
dir=/usr/share/libpam-script if not given.
List of scripts
Executed under auth which handles the authentication stage of
establishing the user via some challenge-response (i.e.
invoked under account module-type for non-authentication based
invoked under passwd for changing the password tokens.
invoked when a session is first opened.
run after a session is first closed.
All the scripts will be passed several environment variables:
PAM_USER, PAM_RUSER, PAM_RHOST, PAM_SERVICE, PAM_AUTHTOK,
PAM_TTY, and PAM_TYPE referring to the module-type. The
pam_script.so arguments in the pam.conf will be passed on the
command line, which can be used to modify the script behavior.
/lib/security/pam_script.so - the PAM module
/usr/share/libpam-script - where the scripts should be placed by
PAM(7) and the PAM "The System Administrators’ Guide"
pam-script was written by Jeroen Nijhof <email@example.com>
with some additions and modifications by R.K. Owen, Ph.D. <firstname.lastname@example.org>.
This manual page was written by R.K. Owen <email@example.com>,
for the Debian project (but may be used by others).
August 22, 2007