#!/bin/sh

# don't run if this package is removed but not purged
if [ ! -f /usr/sbin/popularity-contest ]; then
	exit 0
fi

unset MAILFROM
unset MAILTO
unset MY_HOSTID
unset PARTICIPATE
unset SUBMITURLS
unset USEHTTP
unset MTAOPS

# get configuration information
. /usr/share/popularity-contest/default.conf
. /etc/popularity-contest.conf

# don't run if MAILTO address is blank, and not configured to use HTTP POST!
if [ -z "$MAILTO" ] && [ "yes" != "$USEHTTP" ]; then exit 0; fi

# don't run if PARTICIPATE is "no" or unset!
[ "$PARTICIPATE" = "no" ] || [ -z "$PARTICIPATE" ] && exit 0

if [ -n "$HTTP_PROXY" ]; then
  export http_proxy="$HTTP_PROXY";
fi

POPCON=/var/log/popularity-contest

# Only run on the given day, to spread the load on the server a bit
if [ "$DAY" ] && [ "$DAY" != "$(date +%w)" ] ; then
	# Ensure that popcon runs at least once in the last week
	if [ -f "$POPCON" ] ; then
		now=$(date +%s)
		lastrun=$(date -r $POPCON +%s)
		# 6.5 days, in seconds
		week=561600
		if [ "$(( $now - $lastrun ))" -le "$week" ]; then
			exit 0
		fi
	fi
fi

# keep old logs
cd /var/log
umask 022
savelog -c 7 popularity-contest >/dev/null

run_popcon()
{
	su -s /bin/sh -c "/usr/sbin/popularity-contest" nobody
}

do_sendmail()
{
	if [ -n "$MAILFROM" ]; then
		sendmail -oi $MTAOPS -f "$MAILFROM" $MAILTO
	else
		sendmail -oi $MTAOPS $MAILTO
	fi
}

# generate the popularity contest data

run_popcon > $POPCON

SUBMITTED=no

# try to post the report through http POST
if [ "$SUBMITURLS" ] && [ "yes" = "$USEHTTP" ]; then
    for URL in $SUBMITURLS ; do
	if setsid /usr/share/popularity-contest/popcon-upload \
	    -u $URL -f $POPCON -C 2>/dev/null ; then
		SUBMITTED=yes
	else
		logger -t popularity-contest "unable to submit report to $URL."
	fi
    done
fi

# try to email the popularity contest data

if [ yes != "$SUBMITTED" ] && [ -n "$MAILTO" ]; then
    if [ -x "`which sendmail 2>/dev/null`" ]; then
	(
	    if [ -n "$MAILFROM" ]; then
	        	echo "From: <$MAILFROM>"
	    	echo "Sender: <$MAILFROM>"
	    fi
	    echo "To: $MAILTO"
	    echo "Subject: popularity-contest submission"
	    echo "MIME-Version: 1.0"
	    echo "Content-Type: text/plain"
	    echo
	    cat $POPCON
	) | do_sendmail
	SUBMITTED=yes
    else
	logger -t popularity-contest "unable to submit report using sendmail."
    fi
fi

if [ "yes" != "$SUBMITTED" ] ; then
	logger -t popularity-contest "unable to submit report."
fi