bigtop-packages/src/deb/hue/hue-common.preinst

#!/bin/bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# preinst script for hue
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <new-preinst> `install'
#        * <new-preinst> `install' <old-version>
#        * <new-preinst> `upgrade' <old-version>
#        * <old-preinst> `abort-upgrade' <new-version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package

USER=hue
case "$1" in
    install|upgrade)
        getent group $USER >/dev/null || groupadd -r $USER
        if ! getent passwd $USER >/dev/null; then
                adduser \
                  --system \
                  --disabled-login \
                  --ingroup $USER \
                  --home /usr/lib/hue \
                  --gecos "Hue daemon" \
                  $USER >/dev/null
        fi

        # In upgrade, make a copy of the database, if it's there.
        if [ "$1" == "upgrade" ] ; then
                echo "... stopping any running Hue"
                service hue stop || :
                OLD_DESKTOP_DB=/usr/share/hue/desktop/desktop.db
                if [ -e $OLD_DESKTOP_DB ]; then
                        echo ... backing up $OLD_DESKTOP_DB as ${OLD_DESKTOP_DB}.bak.$2
                        cp -a $OLD_DESKTOP_DB ${OLD_DESKTOP_DB}.bak.$2
                fi
        fi

    ;;

    abort-upgrade)
    ;;

    *)
        echo "preinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

exit 0