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#!/usr/bin/perl
#
# passwd.expire.cron: sample expiry notification script for use as a cronjob
#
# Copyright 1999 by Ben Collins <bcollins@debian.org>, complete rights granted
# for use, distribution, modification, etc.
#
# Usage:
# edit the listed options, including the actual email, then rename to
# /etc/cron.daily/passwd
#
# If your users don't have a valid login shell (ie. they are ftp or mail
# users only), they will need some other way to change their password
# (telnet will work since login will handle password aging, or a poppasswd
# program, if they are mail users).
# <CONFIG> #
# should be same as /etc/adduser.conf
$LOW_UID=1000;
$HIGH_UID=29999;
# this let's the MTA handle the domain,
# set it manually if you want. Make sure
# you also add the @ like "\@domain.com"
$MAIL_DOM="";
# </CONFIG> #
# Set the current day reference
$curdays = int(time() / (60 * 60 * 24));
# Now go through the list
open(SH, "< /etc/shadow");
while (<SH>) {
@shent = split(':', $_);
@userent = getpwnam($shent[0]);
if ($userent[2] >= $LOW_UID && $userent[2] <= $HIGH_UID) {
if ($curdays > $shent[2] + $shent[4] - $shent[5] &&
$shent[4] != -1 && $shent[4] != 0 &&
$shent[5] != -1 && $shent[5] != 0) {
$daysleft = ($shent[2] + $shent[4]) - $curdays;
if ($daysleft == 1) { $days = "day"; } else {$days = "days"; }
if ($daysleft < 0) { next; }
open (MAIL, "| mail -s '[WARNING] account will expire in $daysleft $days' $shent[0]${MAIL_DOM}");
print MAIL <<EOF;
Your account will expire in $daysleft $days. Please change your password before
then or your account will expire
EOF
close (MAIL);
# This makes sure we also get a list of almost expired users
print "$shent[0]'s account will expire in $daysleft days\n";
}
}
@userent = getpwent();
}