#!/bin/sh

# $Id: localpasswdset,v 1.1 2006-05-08 09:13:15 jonas Exp $
#
# Copyright © 2006 Jonas Smedegaard <dr@jones.dk>
# Description: Set or reset a user account password
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2, or (at
# your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.

set -e

MAXDAYSTEMP="30"
WARNDAYSTEMP="14"

PRG="`basename $0`"

user="$1"

# Reuse system defaults from adduser
if [ -e /etc/adduser.conf ]; then
	. /etc/adduser.conf
else
	echo 2> "Error: /etc/adduser.conf missing!"
	exit 1
fi

# Allow overriding defaults
if [ -e /etc/local/users.conf ]; then
	. /etc/local/users.conf
fi

# Integrity check of user
uid="`getent passwd \"$user\" | awk -F: '{print $3}'`"
uidcount="`echo "$uid" | wc --word`"
if [ "$uidcount" -lt "1" ]; then
	echo 2> "Error: User \"$user\" not found!"
	exit 1
fi
if [ "$uidcount" -gt "1" ]; then
	echo 2> "Error: User \"$user\" matched more than a single entry!"
	exit 1
fi
if [ "$uid" -lt "$FIRST_UID" ] || [ "$uid" -gt "$LAST_UID" ]; then
	echo 2> "Error: User ID ($uid) is outside the range of normal users ($FIRST_UID-$LAST_UID)!"
	exit 1
fi

finger -m "$user"
echo
cat <<EOF
You are about to (re)set the password of the above user.

 1. Double-check that this is indeed the correct user
 2. Pick a new password from the list below, and spice up with a number

To abort, type a blank password (just press enter) twice

Suggested new passwords (random but pronouncable):
EOF
gpw
passwd "$user"
chage -M"$MAXDAYSTEMP" -W"$WARNDAYSTEMP" "$user"
echo
cat <<EOF
Password correctly (re)set!

The new password lasts only "$WARNDAYSTEMP" days, so instruct user to
change it soon!
EOF

exit 0