checkinet

#!/bin/sh

# Copyright (c) 2012 Todd T. Fries <todd@fries.net>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

. /etc/he.conf

gw4=$(netstat -nr -f inet | awk '{print $2;exit(0)}')
extif=$(ifconfig egress | awk '/^gif/{next} /^[a-z]/{sub(":","",$1); print $1}')
if ! ping -c 2 $gw4 > /dev/null 2>&1
then
	start=$SECONDS
	while ! [ "$(ifconfig egress | grep active)" ]
	do
		sleep 5
	done
	active=$SECONDS
	pkill dhclient
	dhclient $extif > /dev/null 2>&1
	dhclient=$SECONDS
	
	echo $start $active $dhclient | mail -s "restarted dhcp" servers@freedaemonconsulting.com
fi

gw6=$(netstat -nr -f inet6 | awk '{print $2;exit(0)}')
if ! ping6 -c 2 $gw6 > /dev/null 2>&1
then
	start=$SECONDS
	/usr/local/sbin/updatehe
	echo $start $SECONDS | mail -s "restarted v6" $email
fi