#!/bin/sh

# default as often as two hours
UPDATE_HOUR=2

if [ -f /etc/sysconfig/clamd ]; then
	. /etc/sysconfig/clamd
fi

hour=$(LC_ALL=C date '+%k')

# skip divide errors
[ "$hour" = "0" ] && exit 0

div=$((hour % $UPDATE_HOUR))

[ "$div" = "0" ] || exit 0

# sleep random amount to avoid all servers hitting clamav servers at same time
# but at most 1800 seconds (half hour)
rand=${RANDOM:-$$}
rand=$((rand % 1800))
sleep $rand

[ "$UPDATE_MAIL_MESSAGES" ] || UPDATE_MAIL_MESSAGES="errors"
[ "$UPDATE_MAIL_MESSAGES" = "errors" ] && freshclamopt="--quiet"

notify=
[ -f /var/lock/subsys/clamd ] && notify="--daemon-notify"

umask 022
log=$(/usr/bin/freshclam $freshclamopt $notify 2>&1)
[ "$UPDATE_MAIL_MESSAGES" != "none" -a -n "$log" ] && echo "$log"