trafficserver 3.2.4-1ubuntu1 / postinst

#! /bin/sh
# postinst script for trafficserver
#
# see: dh_installdeb(1)
#
#  Copyright 2011 Arno Toell <debian@toell.net>
#
#   Licensed 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.


set -e

USER='trafficserver'
GROUP='trafficserver'
USER_HOME='/var/run/trafficserver'
OWNER=$(env stat -c '%U' /etc/trafficserver)
OWNER_CACHE_DIR=$(env stat -c '%U' /var/cache/trafficserver)

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see /usr/share/doc/packaging-manual/
#
# quoting from the policy:
#     Any necessary prompting should almost always be confined to the
#     post-installation script, and should be protected with a conditional
#     so that unnecessary prompting doesn't happen if a package's
#     installation fails and the `postinst' is called with `abort-upgrade',
#     `abort-remove' or `abort-deconfigure'.

case "$1" in
configure)

	if ! getent passwd -- "$USER" >/dev/null 2>&1 ; then
	adduser --home "$USER_HOME" \
		--group \
		--system \
		--disabled-password \
		--no-create-home \
		--gecos "Debian Traffic Server user" \
		$USER
	fi

	if [ -d /etc/trafficserver ] && [ "x$OWNER" = "xroot" ] ; then
		# Ok, I admit I am lazy. I don't check every permission
		# the user may have changed. If he didn't for /etc I can
		# safely assume he neither has for other directories (I 
		# hope, since /etc requires write permissions by ATS). 
		echo 'Fixing permissions ...'

		if ! dpkg-statoverride --list /etc/trafficserver >/dev/null 2>&1; then
		    dpkg-statoverride --update --add "$USER" "$GROUP" 0755 /etc/trafficserver
		fi

		if ! dpkg-statoverride --list /var/log/trafficserver >/dev/null 2>&1; then
			dpkg-statoverride --update --add "$USER" adm 0750 /var/log/trafficserver
		fi


		find /etc/trafficserver -not -user "$USER" -exec \
			chown -h $USER:$GROUP {} \;


		if [ -d /var/cache/trafficserver ] && [ "x$OWNER_CACHE_DIR" = "xroot" ] ; then
			if ! dpkg-statoverride --list /var/cache/trafficserver  >/dev/null 2>&1; then
				dpkg-statoverride --update --add "$USER" adm 0750 /var/cache/trafficserver
			fi
		fi
	fi

        if [ -n "$2" ] && dpkg --compare-versions "$2" 'le' '3.2~' ; then
                RET=0
                invoke-rc.d trafficserver status > /dev/null 2>&1 || RET=$?
                # 0 => ATS is running
                # 4 => Status is unknown
                # 1,2,3 => ATS is not running

                # using /bin/echo to make sure -e is supported
                ECHO=`which echo`
                if [ "$RET" -gt 0 ] && [ "$RET" -ne 4 ] && [ -f /var/cache/trafficserver/host.db ] ; then
                        echo "Purging TrafficServer cache upon upgrade."
                        RET=0
                        traffic_server -Cclear > /dev/null 2>&1 || RET=$?
                        if [ "$RET" -ne 0 ] ; then
                                $ECHO "======================================================================="
                                $ECHO -e "WARNING: Apache TrafficServer's cache couldn't be purged during the upgrade.\n" \
                                        "Please inspect the situation manually and call 'traffic_server -Cclear'\n" \
                                        "afterwards to purge the caches."
                                $ECHO "======================================================================="
                        fi
                else
                    $ECHO "======================================================================="
                    $ECHO -e "WARNING: Apache TrafficServer is not running or its state couldn't be\n" \
                        "determined. Please inspect the situation manually and call\n" \
                        "'traffic_server -Cclear' afterwards to purge the caches.\n"
                    $ECHO "======================================================================="

               fi
        fi
;;

abort-upgrade|abort-remove|abort-deconfigure)

;;

*)
echo "postinst called with unknown argument \`$1'" >&2
exit 0
;;
esac

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

# Automatically added by dh_installinit
if [ -x "/etc/init.d/trafficserver" ]; then
	if [ ! -e "/etc/init/trafficserver.conf" ]; then
		update-rc.d trafficserver defaults >/dev/null
	fi
	invoke-rc.d trafficserver start || exit $?
fi
# End automatically added section


exit 0