#! /bin/sh
#----------------------------------------------------------------------------
# add-group - add a group
#
# Creation:     2001-11-04  fm
# Last Update:  $Id$
#
# Copyright (c) 2001-2010 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
    IFS=':'
    gid=200
    while read line
    do
        set -- $line
        if [ $3 -gt $gid -a $3 -lt 300 ]
        then
            gid=$3
        fi
    done </etc/group

    gid=`expr $gid + 1`
fi

if [ -z "$group" ]
then
    /var/install/bin/ask "Group (max. 8 characters, e.g. 'www'): " '' '+' > /tmp/ask.$$
    rc=$?
    group=`cat /tmp/ask.$$`
    rm -f /tmp/ask.$$
    if [ $rc = 255 ]
    then
        exit 1
    fi
fi

case "$group" in
    ?????????*)
        echo
        mecho --warn "name of group is too long"
    ;;
    "")
        mecho --warn "no group added"
    ;;
    *)
        grep "^$group:" /etc/group >/dev/null
        if [ $? = 0 ]
        then
            echo
            mecho --warn "group $group already exists"
        else
            echo "$group:x:$gid:" >>/etc/group
        fi
    ;;
esac

if "$interactive"
then
    echo
    anykey
fi