cat rc.gateway_alarm
#!/bin/sh
#
# rc.gateway_alarm
#
# Copyright (c) 2015-2016 Electric Sheep Fencing
# Copyright (c) 2015-2024 Rubicon Communications, LLC (Netgate)
# All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

GW="$1"
alarm_addr="$2"
alarm_flag="$3"
alarm_rtt="$4"
alarm_rttsd="$5"
alarm_loss="$6"

if [ -z "$GW" ]; then
        exit 1
fi

print_rtt() {
        usec=$1
        usec_to_ms=$( echo "scale=3; ${usec}/1000" | bc -l )
        echo "${usec_to_ms}ms"
}

echo ">>> Gateway alarm: ${GW} (Addr:${alarm_addr} Alarm:${alarm_flag} RTT:$( print_rtt ${alarm_rtt} ) RTTsd:$( print_rtt ${alarm_rttsd} ) Loss:${alarm_loss}%)" | /usr/bin/logger -p daemon.info -i -t rc.gateway_alarm

/usr/local/sbin/pfSctl \
        -c "service reload dyndns ${GW}" \
        -c "service reload ipsec ${GW}" \
        -c "service reload openvpn ${GW}" \
        -c "filter reload" >/dev/null 2>&1

# after above signal the check_reload_status process calls the following scripts simultaneously.:
# - "/etc/rc.dyndns.update", "dyndns=%s"
# - "/etc/rc.ipsec", "interface=%s"
# - "/etc/rc.openvpn", "interface=%s"
# - "/etc/rc.filter_configure_sync"


#ip used to verify internet connectivity
testip="8.8.8.8"

#obtained wan interface

WAN_INTERFACE_RENEW=$(cat /var/etc/dhclient_wan.conf | head -n 1 | cut -f 2 -d '"' -s)
#GW="WAN_DHCP"

if [ $GW = "WAN_DHCP" ] && ! ping -c 2 -W 1000 $testip >/dev/null 2>&1      ; then
  logger -s -t "ATT14DAY" "Forced dhcp renew due to 14 day outage" >/dev/null 2>&1
#  sleep 10
  /sbin/dhclient -c /var/etc/dhclient_wan.conf $WAN_INTERFACE_RENEW
  sleep 2
  logger -s -t "ATT14DAY" "$WAN_INTERFACE_RENEW Interface DHCP renewal complete" >/dev/null 2>&1
else
   exit $?
fi

exit $?