#!/bin/sh
#----------------------------------------------------------------------------
# add-group - add a group
#
# Creation:     2001-11-04  fm
# Last Update:  $Id$
#
# Copyright (c) 2001-@@YEAR@@ the eisfair team, team(at)eisfair(dot)org
#
# usage: add-group
#    or: add-group group gid
#
# 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.
#----------------------------------------------------------------------------
. /var/install/include/eislib

case ${#} in
    0)
        interactive='true'

        group=""
        gid=""
        ;;
    1)
        interactive='false'

        group="${1}"
        gid=""
        ;;
    2)
        interactive='false'

        group="${1}"
        gid="${2}"
        ;;
    *)
        echo "usage: `basename ${0}`" >&2
        echo "   or: `basename ${0}` group gid" >&2
        exit 1
        ;;
esac

if "${interactive}"
then
    clrhome
    mecho --info "Add group"
    echo
fi

if [ -z "${gid}" ]
then
    oldifs=${IFS}
    gid=200
    while read line
    do
        IFS=':'
        set -- ${line}
        if [ ${3} -gt ${gid} -a ${3} -lt 300 ]
        then
            gid=${3}
        fi
        IFS="${oldifs}"
    done </etc/group

    gid=$(expr $gid + 1)
fi

if [ -z "${group}" ]
then
    _ask_tmpfile=$(mktemp -t .XXXXXXXXXXXXX)
    /var/install/bin/ask "Group (max. 32 characters, e.g. 'www'): " '' '+' > ${_ask_tmpfile}
    rc=${?}
    read group < ${_ask_tmpfile}
    rm -f ${_ask_tmpfile}
    if [ ${rc} = 255 ]
    then
        exit 1
    fi
fi

case "${group}" in
    '')
        mecho --warn "no group added"
        ;;
    *)
        if [ "${#group}" -gt 32 ]
        then
            echo
            mecho --warn "name of group is too long"
        elif getent group "${group}" >/dev/null
        then
            echo
            mecho -n --warn 'group '
            mecho -n --std "'${group}' "
            mecho --warn 'already exists'
        else
            /usr/sbin/groupadd -g "${gid}" "${group}"
        fi
        ;;
esac

if "${interactive}"
then
    echo
    anykey
fi