#!/bin/sh
#----------------------------------------------------------------------------
# show-user-additional-group - show additional groups of user
#
# Creation:     2003-07-20  fm
# Last Update:  $Id$
#
# Copyright (c) 2003-@@YEAR@@ the eisfair team, team(at)eisfair(dot)org
#
# 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.
#----------------------------------------------------------------------------

# include eislib
. /var/install/include/eislib

#debug=true

if ${debug:-false}
then
    exec 2>/tmp/$(basename ${0})-trace$$.log
    set -x
    ask_debug=true
    export ask_debug
fi

interactive=true
ASK=/var/install/bin/ask
MKTEMP=/usr/bin/mktemp
RM=/usr/bin/rm
GREP=/usr/bin/grep

#----------------------------------------------------------------------------
# do exit
#----------------------------------------------------------------------------
do_exit()
{
    if "${interactive:-false}"
    then
        mecho
        anykey
    fi
    exit $1
}

#----------------------------------------------------------------------------
# myecho, do output to tty
#----------------------------------------------------------------------------
myecho()
{
    if ${interactive:-false}
    then
        mecho ${1} "${2}"
    else
        mecho "${2}" >&2
    fi
}

#----------------------------------------------------------------------------
# main
#----------------------------------------------------------------------------
main()
{
    clrhome
    mecho --info "Show additional groups of user"
    mecho
    mecho

    _ask_tmpfile=$(${MKTEMP} -t XXXXXXXXXXXXX)
    ${ASK} "User:" '' '*' > ${_ask_tmpfile}
    rc=${?}
    read user < ${_ask_tmpfile}
    ${RM} -f ${_ask_tmpfile}
    if [ ${rc} = 255 ]
    then
        exit 1
    fi

    if [ -z "${user}" ]
    then
        mecho
        myecho --warn "Command aborted"
        do_exit 1
    fi

    mecho
    line=$(${GREP} "^$user:" /etc/passwd)

    if [ -z "${line}" ]
    then
        mecho
        myecho --warn "User ${user} does not exist!"
        do_exit 1
    fi

    myecho "  Additional groups of user ${user}:"
    mecho
    oldifs="${IFS}"
    IFS=':'
    while read line
    do
        set -- ${line}
        g="${1}"
        u="${4}"

        IFS=','
        set -- ${u}

        for j in ${*}
        do
            if [ ${j} = ${user} ]
            then
                mecho "    ${g}"
                break
            fi
        done
        IFS=':'
    done </etc/group
    IFS="${oldifs}"

    do_exit 0
}

#----------------------------------------------------------------------------
# call function main
#----------------------------------------------------------------------------
main "${@}"

#----------------------------------------------------------------------------
# end
#----------------------------------------------------------------------------