#! /bin/sh
#----------------------------------------------------------------------------
# remove-user - remove a user
#
# Copyright (c) 2001-2003 Frank Meyer <frank@eisfair.org>
#
# usage: remove-user
#    or: remove-user user do-remove-homedir
#
# Creation:	04.11.2001  fm
# Last Update:  19.07.2003  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.
#----------------------------------------------------------------------------

if [ "$1" = "-f" ]
then
    force=true
    shift
else
    force=false
fi

case $#
in
    0)
	interactive='true'
	user=""
	do_remove_homedir=""
	;;
    2)
	interactive='false'
	user="$1"
	do_remove_homedir="$2"
	case "$do_remove_homedir"
	in
	    y | yes)
		do_remove_homedir='y'
		;;
	    n | no)
		do_remove_homedir='n'
		;;
	    *)
		echo "`basename $0`: do-remove-homedir must be 'yes' or 'no'" >&2
		exit 1
		;;
	esac
	;;
    *)
	echo "usage: `basename $0`" >&2
	echo "   or: `basename $0` [-f] user do-remove-homedir" >&2
	exit 1
	;;
esac

if [ "$interactive" = "true" ]
then
    clrhome
    colecho "Remove user" gn
    echo
fi

if [ "$user" = "" ]
then
    echo -e "User to remove (e.g. 'www'): \c"
    read user
fi

if [ "$user" = "" ]
then
    echo
    /var/install/bin/anykey
    exit 0
fi

line=`grep "^$user:" /etc/passwd`

if [ "$line" = "" ]
then
    echo
    colecho "User $user does not exist" br x br
    /var/install/bin/anykey
    exit 0
fi

IFS=':'
set -- $line

if [ $force = false ]
then
    if [ $3 -lt 200 -o $3 -ge 65534 ]
	then
	echo
	colecho "It is not allowed to remove user $user, sorry" br x br
	/var/install/bin/anykey
	exit 0
    fi
fi

home=`eval echo ~$user`

grep -v "^$user:" /etc/passwd >/tmp/passwd-$$
cp /tmp/passwd-$$ /etc/passwd		# cp: keep inode & permissions
rm -f /tmp/passwd-$$

grep -v "^$user:" /etc/shadow >/tmp/shadow-$$
cp /tmp/shadow-$$ /etc/shadow		# cp: keep inode & permissions
rm -f /tmp/shadow-$$

if [ "$do_remove_homedir" = "" ]
then
    if /var/install/bin/ask "Remove home directory $home"
    then
	do_remove_homedir=y
    else
	do_remove_homedir=n
    fi
fi

if [ "$do_remove_homedir" = "y" ]
then
    case "$home"
    in
	/home/*)
	    rm -rf $home
	    ;;
	*)
	    echo "remove-user: did not remove home directory $home" >&2
	    ;;
    esac
fi

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