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#!/bin/sh
[ -z "$9" ] && echo "Error: should not be started manually" && exit 0
if [ -e /var/run/mwan3track-$1.pid ] ; then
kill $(cat /var/run/mwan3track-$1.pid) &> /dev/null
rm /var/run/mwan3track-$1.pid &> /dev/null
fi
echo "$$" > /var/run/mwan3track-$1.pid
score=$(($7+$8))
track_ips=$(echo $* | cut -d ' ' -f 9-99)
host_up_count=0
lost=0
while true; do
for track_ip in $track_ips; do
ping -I $2 -c $4 -W $5 -s 4 -q $track_ip &> /dev/null
if [ $? -eq 0 ]; then
let host_up_count++
else
let lost++
fi
done
if [ $host_up_count -lt $3 ]; then
let score--
if [ $score -lt $8 ]; then score=0 ; fi
if [ $score -eq $8 ]; then
logger -t mwan3track -p notice "Interface $1 ($2) is offline"
env -i ACTION=ifdown INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
score=0
fi
else
if [ $score -lt $(($7+$8)) ] && [ $lost -gt 0 ]; then
logger -t mwan3track -p info "Lost $(($lost*$4)) ping(s) on interface $1 ($2)"
fi
let score++
lost=0
if [ $score -gt $8 ]; then score=$(($7+$8)); fi
if [ $score -eq $8 ]; then
logger -t mwan3track -p notice "Interface $1 ($2) is online"
env -i ACTION=ifup INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
rm /var/run/mwan3track-$1.pid
exit 0
fi
fi
host_up_count=0
sleep $6
done
exit 1
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