#! /bin/sh
# preinst script for SRG
#
# Author:   Matt Brown <debian@mattb.net.nz>
# Version:  $Id:$
# Released under the GPL v2

set -e

# conffile handling thanks to http://wiki.debian.org/DpkgConffileHandling

# Prepare to move a conffile without triggering a dpkg question
prep_mv_conffile() {
    PKGNAME="$1"
    CONFFILE="$2"

    if [ -e "$CONFFILE" ]; then
        md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
        old_md5sum="`dpkg-query -W -f='${Conffiles}' $PKGNAME | sed -n -e \"\\\\' $CONFFILE'{s/ obsolete$//;s/.* //p}\"`"
        if [ "$md5sum" = "$old_md5sum" ]; then
            rm -f "$CONFFILE"
        fi
    fi
}

case "$1" in
install|upgrade)
    if dpkg --compare-versions "$2" le "1.3.3-2"; then
        prep_mv_conffile srg "/etc/srg/ip2user.txt"
    fi
esac