#! /bin/sh
#----------------------------------------------------------------------------
# /var/install/bin/remove-user-from-additional-group - remove user from additional group
#
# Copyright (c) 2001-2005 The Eisfair Team, c/o Frank Meyer, frank(at)eisfair(dot)org
#
# Creation:	20.07.2003  fm
# Last Update:  $Id$
#
# 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

clrhome
mecho -info "Remove user from additional group"
echo

tty=`tty`
echo
echo

/var/install/bin/ask "User:" '' '*' > /tmp/ask.$$
rc=$?
user=`cat /tmp/ask.$$`
rm -f /tmp/ask.$$
if [ $rc = 255 ]
then
    exit 1
fi

oldifs="$IFS"

if [ "$user" != "" ]
then
    mecho
    line=`grep "^$user:" /etc/passwd`

    if [ "$line" != "" ]
    then    
        groups=''
        mecho "  Additional groups of user $user:"
        echo
        IFS=':'
        while read line
        do
            set -- $line
            g="$1"
            u="$4"

            IFS=','
            set -- $u
            for j in $*
            do
                if [ $j = $user ]
                then
                    echo "    $g"

                    if [ "$groups" = "" ]
                    then
                        groups="$g"
                    else
                        groups="$groups "$g
                    fi

                    break
                fi
            done
            IFS=':'
        done </etc/group
	IFS="$oldifs"

        if [ "$groups" != "" ]
        then
            mecho
            /var/install/bin/ask "Remove user $user from group:" '' '*' > /tmp/ask.$$
            rc=$?
            rg=`cat /tmp/ask.$$`
            rm -f /tmp/ask.$$
            if [ $rc = 255 ]
            then
                exit 1
            fi
            echo

            if [ "$rg" != "" ]
            then
                group_found=false

                for j in $groups
                do
                    if [ $rg = $j ]
                    then
                        group_found=true
                        break
                    fi
                done

                if [ $group_found = true ]
                then
                    g=''

                    for j in $groups
                    do
                        if [ $j != $rg ]
                        then
                            if [ "$g" = "" ]
                            then
                                g=$j
                            else
                                g="$g,$j"
                            fi
                        fi
                    done

                    /usr/sbin/usermod -G "$g" $user
                else
                    mecho -warn "additional group $rg for user $user not found!"
                fi
            else
                mecho -warn "Command aborted"
            fi
        else
            mecho -warn "No additional group for $user found!"
        fi
    else
        mecho -warn "User $user does not exist!"
    fi
else
    echo
    mecho -warn "Command aborted"
fi

echo
anykey