#!/bin/sh

set -e

LASTVERSION="0.1.2-4"

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

    if [ -e "$CONFFILE" ]; then
        md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
        old_md5sum="`dpkg-query -W -f='${Conffiles}' libpam-encfs | grep "$CONFFILE" | awk '{print $2}'`"
        if [ "$md5sum" = "$old_md5sum" ]; then
            rm -f "$CONFFILE"
        fi
    fi
}

case "$1" in
install|upgrade)
    if dpkg --compare-versions "$2" le "$LASTVERSION"; then
        prep_mv_conffile "/etc/pam_encfs.conf"
    fi
esac