#! /bin/sh
#----------------------------------------------------------------------------
# invalidate-password - invalidate password of a user
#
# Copyright (c) 2003 Frank Meyer <frank@eisfair.org>
#
# Creation:	15.08.2003  fm
# Last Update:  15.08.2003  fm
#
# 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 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------


user=$1

if [ "$user" = "" ]
then
    clrhome
    colecho "Invalidate password" gn
    echo
    echo
    interactive=true
    echo -e "User: \c"
    read user
    echo
else
    interactive=false
fi

if [ "$user" != "" ]
then
    grep "^$user:" /etc/passwd >/dev/null
    if [ $? = 0 ]
    then    
	sed "s/^$user:[^:]*:/$user:"'!:/' </etc/shadow >/etc/shadow.$$
	cp /etc/shadow.$$ /etc/shadow  # keep permissions
	rm -f /etc/shadow.$$
	if [ $interactive = true ]
        then
	    echo "Command successful"
	fi
    else
	if [ $interactive = true ]
        then
	    colecho "User $user does not exist!" br x br
	else
	    echo "User $user does not exist!" >&2
	fi
    fi
else
    colecho "Command aborted" br x br
fi

if [ $interactive = true ]
then
    echo
    /var/install/bin/anykey
fi