#!/bin/sh -e

prep_mv_conffile() {
	local PKGNAME="$1"
	local CONFFILE="$2"

	[ -e "$CONFFILE" ] || return 0

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

case "$1" in
install|upgrade)
	if dpkg --compare-versions "$2" le "30~pre9-2"; then
		prep_mv_conffile wireless-tools "/etc/network/if-up.d/wireless-tools"
		prep_mv_conffile wireless-tools "/etc/network/if-down.d/wireless-tools"
	fi
esac