#!/bin/sh

# Copyright 2007,2008 Duncan Findlay <duncf@debian.org>
# Copyright 2008-2019 Noah Meyerhans <noahm@debian.org>

# This script does not do anything by default.  If you are using systemd,
# invoke "systemctl enable --now spamassassin-maintenance.timer" to enable
# spamassassin's daily maintenance systemd timer.  If you are not using
# systemd, or otherwise prefer to use cron for daily maintenance, set CRON=1
# in /etc/cron.daily/spamassassin

CRON=0

test -f /etc/default/spamassassin && . /etc/default/spamassassin

test -x /usr/bin/sa-update || exit 0
command -v gpg > /dev/null || exit 0

if [ "$CRON" = "0" ] ; then
    exit 0
fi

# If the systemd timer is active, there's nothing else for us to do:
if [ -d /run/systemd/system ] && \
       systemctl is-enabled --quiet spamassassin-maintenance.timer; then
    exit 0
fi

# If we're running under systemd, and we reach this point, then we can
# safely convert to the timer.  If you'd rather run the daily
# maintenance task from cron, even if systemd is present, then create
# a file named /etc/spamassassin/skip-timer-conversion to avoid
# running this conversion.
if [ -d /run/systemd/system ] && [ ! -e /etc/spamassassin/skip-timer-conversion ]; then
    echo "Converting /etc/cron.daily/spamassassin to systemd timer" |
	logger -p mail.notice
    systemctl enable spamassassin-maintenance.timer
    systemctl start spamassassin-maintenance.service
    exit 0
fi

# Sleep for up to 3600 seconds if not running interactively
if [ ! -t 0 ]; then
    RANGE=3600
    number=`od -vAn -N2 -tu4 < /dev/urandom`
    number=`expr $number "%" $RANGE`
    sleep $number
fi

exec /usr/sbin/spamassassin-maint