#! /bin/sh

# Script to create a CD-ready directory from .deb package
# output from script will be a directory which should be copied to / of CDROM
# user of CDROM should run "apt-cdrom add"

usage ()
{
    cat <<EOF

usage: $0 debfile

EOF
}

error ()
{
    echo $0: error: ${1:-"unknown error"} - aborting.
    exit 1
}

debfile="$1"

# should be root for some of these commands
if [ ! `whoami` = "root" ]; then
    export my_user=${USER}
    export my_group=`groups | gawk '{print $1}'`
    echo root password required
    exec su -p -c "$0 $*"
    error "root authorisation failed"
fi

if [ -z "${debfile}" ]; then
    usage
    error "No debfile given"
fi

topdir=`pwd`

# create working directory
tmpdir=`mktemp -d mtt_deb2cd.tmp.XXXXXXXXXX`
if [ ! -d ${tmpdir} ]; then
    error "cannot create temporary directory"
fi

cp ${debfile} ${tmpdir}/
cd ${tmpdir}
mkdir .disk
echo "MTT (${debfile}, `date`)" > .disk/info
tmpfile=`mktemp mtt_deb2cd.tmp.XXXXXXXXXX`
echo "Scanning .deb packages"
dpkg-scanpackages . ${tmpfile} | gzip > ./Packages.gz
rm ${tmpfile}
# create Redhat package
echo "Creating .rpm, please wait ..."
alien --to-rpm ${debfile}
chown -R ${my_user:-"root"}.${my_group:-"root"} .
cd ..

echo "Directory created (${tmpdir}) - copy this to iso9660 image as /"

exit 0