#!/bin/sh
#
# ppp-linkdown
#
# part of pfSense (https://www.pfsense.org)
# Copyright (c) 2004-2016 Rubicon Communications, LLC (Netgate)
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
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#    "This product includes software developed by the pfSense Project
#    for use in the pfSense® software distribution. (http://www.pfsense.org/).
#
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#
# "This product includes software developed by the pfSense Project
# for use in the pfSense software distribution (http://www.pfsense.org/).
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# OF THE POSSIBILITY OF SUCH DAMAGE.

IF="${1}"
PROTOCOL="${2}"
LOCAL_IP="${3}"

if [ -f /tmp/${IF}up ] && [ -f /conf/${IF}.log ]; then
	seconds=$((`date -j +%s` - `/usr/bin/stat -f %m /tmp/${IF}up`))
	/usr/local/sbin/ppp-log-uptime.sh $seconds ${IF} &
fi

/etc/rc.kill_states ${IF} ${LOCAL_IP}

if [ "${PROTOCOL}" == "inet" && -s "/tmp/${IF}_defaultgw" ]; then
	GW=`head -n 1 /tmp/${IF}_defaultgw`
	DGW=`/sbin/route -n get -inet default | /usr/bin/awk '/gateway:/ {print $2}'`
	# Only remove the default gateway if it matches the gateway for this interface. See redmine #1837
	if [ "${GW}" = "${DGW}" ]; then
		/sbin/route -q delete default ${GW}
	fi
fi

if [ "${PROTOCOL}" == "inet6" ]; then
	/usr/local/sbin/ppp-ipv6 ${IF} down
fi
# delete the node just in case mpd cannot do that
/usr/sbin/ngctl shutdown ${IF}:
if [ -f "/var/etc/nameserver_${IF}" ]; then
	# Remove old entries
	for nameserver in `cat /var/etc/nameserver_${IF}`; do
		/sbin/route -q delete ${nameserver} >/dev/null 2>&1
	done
	/bin/rm -f /var/etc/nameserver_${IF}
fi
# Do not remove gateway used during filter reload.
/bin/rm -f /tmp/${IF}_router
/bin/rm -f /tmp/${IF}up
/bin/rm -f /tmp/${IF}_ip
/usr/local/sbin/pfSctl -c 'service reload dns'