#!/bin/sh

set -e

UPGRADEDIR4="/etc/likewise-open/4_1_upgrade"

rm_conffile() {
    CONFFILE="$1"

    if [ -e "$CONFFILE" ]; then
        md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
        old_md5sum="`sed -n -e \"/^Conffiles:/,/^[^ ]/{\\\\' $CONFFILE'{s/.* //;p}}\" /var/lib/dpkg/status`"
        if [ "$md5sum" != "$old_md5sum" ]; then
            echo "Obsolete conffile $CONFFILE has been modified by you."
            echo "Saving as $CONFFILE.dpkg-bak ..."
            mv -f "$CONFFILE" "$CONFFILE".dpkg-bak
        else
            echo "Removing obsolete conffile $CONFFILE ..."
            rm -f "$CONFFILE"
        fi
    fi
}

save_4_1_files()
{
    if [ -f /etc/samba/lwiauthd.conf -a -f /etc/samba/secrets.tdb ]
    then
        mkdir -p ${UPGRADEDIR4}
        cp /etc/samba/lwiauthd.conf ${UPGRADEDIR4}
        cp /etc/samba/secrets.tdb ${UPGRADEDIR4}
    fi

    if [ -x /usr/sbin/pam-auth-update ]; then
       /usr/sbin/pam-auth-update --package --remove likewise-open
    fi
}

case "$1" in
    abort-upgrade)
    ;;

    upgrade)
    pam-auth-update --package

    if dpkg --compare-versions "$2" le "4.1.2982-0ubuntu3"; then
        # Shutdown old daemons (if running)
        if [ -f /etc/init.d/likewise-open ]
        then
            /etc/init.d/likewise-open stop || true
        fi

        save_4_1_files

        if [ -x /usr/sbin/pam-auth-update ]; then
           /usr/sbin/pam-auth-update --package --remove likewise-open
        fi

        if [ -x /usr/bin/domainjoin-cli ]; then
            /usr/bin/domainjoin-cli leave || true
        fi
    fi

    # remove obsolete conffiles from previous versions
    if dpkg --compare-versions "$2" lt-nl "5.4.0"; then
	# from 4.1
	rm_conffile /etc/samba/lwiauthd.conf
	rm_conffile /etc/security/pam_lwidentity.conf
	rm_conffile /etc/default/likewise-open
	rm_conffile /etc/init.d/likewise-open
	# from 5.0
	rm_conffile /etc/init.d/npcmuxd
    fi
    ;;

esac

#DEBHELPER#