source: trunk/debathena/config/auto-update/debian/debathena-auto-update.postinst @ 24935

#!/bin/sh
# postinst script for debathena-auto-update
#
# see: dh_installdeb(1)

set -e

# 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>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package

desync2cron() {
    hour=$1
    interval=$2
    shift 2
    desync=`desync -n $interval`
    mins=`echo $desync % 60 | bc`
    hours=`echo "$hour + ($desync / 60)" | bc`
    if [ $hours -ge 24 ]; then
        hours=`echo $hours - 24 | bc`
    fi
    echo "$mins $hours * * * $*"
}

UPD_CRONFILE=/etc/cron.d/athena-auto-update
UPG_CRONFILE=/etc/cron.d/athena-auto-upgrade

case "$1" in
    configure)
        # Nuke /var/lib/athena-update-status on 1.18, 
        # since we changed its format. It will be created 
        # at the next auto update
        if dpkg --compare-versions "$2" lt 1.18~ &&
            [ -f /var/lib/athena-update-status ]; then
            rm /var/lib/athena-update-status
        fi

        rm -f $UPD_CRONFILE
        rm -f $UPG_CRONFILE

        echo "# Automatically generated by debathena-auto-update postinst" > $UPD_CRONFILE
        for h in 2 4 6; do
            desync2cron $h 120 root /usr/sbin/athena-auto-update cron >> $UPD_CRONFILE
        done
        for h in 8 14 20; do
            desync2cron $h 360 root /usr/sbin/athena-auto-update cron >> $UPD_CRONFILE
        done
        echo "# Automatically generated by debathena-auto-update postinst" > $UPG_CRONFILE

        upginterval=360
        hostname=`hostname | tr 'A-Z' 'a-z'`
        case $hostname in
            m38-370*)
                upginterval=420
                ;;
            w20-575*)
                upginterval=480
                ;;
        esac
        desync2cron 2 $upginterval root /usr/sbin/athena-auto-upgrade >> $UPG_CRONFILE
        
    ;;

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

    *)
        echo "postinst 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