You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
176 lines
4.1 KiB
176 lines
4.1 KiB
#!/bin/sh
|
|
|
|
. /lib/functions.sh
|
|
|
|
LOG="logger -t $(basename "$0")[$$] -p"
|
|
INTERFACE=""
|
|
DEVICE=""
|
|
|
|
IFDOWN_EVENT=0
|
|
|
|
clean_up() {
|
|
$LOG notice "Stopping mwan3track for interface \"${INTERFACE}\""
|
|
exit 0
|
|
}
|
|
|
|
if_down() {
|
|
$LOG info "Detect ifdown event on interface ${INTERFACE} (${DEVICE})"
|
|
IFDOWN_EVENT=1
|
|
}
|
|
|
|
validate_track_method() {
|
|
case "$1" in
|
|
ping)
|
|
# Assume that ping is installed
|
|
;;
|
|
arping)
|
|
which arping 1>/dev/null 2>&1 || {
|
|
$LOG warn "Missing arping. Please install iputils-arping package."
|
|
return 1
|
|
}
|
|
;;
|
|
httping)
|
|
which httping 1>/dev/null 2>&1 || {
|
|
$LOG warn "Missing httping. Please install httping package."
|
|
return 1
|
|
}
|
|
;;
|
|
*)
|
|
$LOG warn "Unsupported tracking method: $track_method"
|
|
return 2
|
|
;;
|
|
esac
|
|
}
|
|
|
|
main() {
|
|
local reliability count timeout interval failure_interval
|
|
local recovery_interval down up size
|
|
local keep_failure_interval
|
|
|
|
[ -z "$5" ] && echo "Error: should not be started manually" && exit 0
|
|
|
|
INTERFACE=$1
|
|
DEVICE=$2
|
|
STATUS=$3
|
|
SRC_IP=$4
|
|
mkdir -p /var/run/mwan3track/$1
|
|
trap clean_up SIGINT SIGTERM
|
|
trap if_down SIGUSR1
|
|
|
|
config_load mwan3
|
|
config_get track_method $1 track_method ping
|
|
validate_track_method $track_method || {
|
|
$LOG warn "Using ping to track interface $INTERFACE avaliability"
|
|
track_method=ping
|
|
}
|
|
config_get reliability $1 reliability 1
|
|
config_get count $1 count 1
|
|
config_get timeout $1 timeout 4
|
|
config_get interval $1 interval 10
|
|
config_get down $1 down 5
|
|
config_get up $1 up 5
|
|
config_get size $1 size 56
|
|
config_get failure_interval $1 failure_interval $interval
|
|
config_get_bool keep_failure_interval $1 keep_failure_interval 0
|
|
config_get recovery_interval $1 recovery_interval $interval
|
|
|
|
local score=$(($down+$up))
|
|
local track_ips=$(echo $* | cut -d ' ' -f 5-99)
|
|
local host_up_count=0
|
|
local lost=0
|
|
local sleep_time=0
|
|
local turn=0
|
|
|
|
if [ "$STATUS" = "unknown" ]; then
|
|
echo "unknown" > /var/run/mwan3track/$1/STATUS
|
|
score=0
|
|
else
|
|
echo "online" > /var/run/mwan3track/$1/STATUS
|
|
fi
|
|
while true; do
|
|
|
|
sleep_time=$interval
|
|
|
|
for track_ip in $track_ips; do
|
|
if [ $host_up_count -lt $reliability ]; then
|
|
case "$track_method" in
|
|
ping)
|
|
ping -I $DEVICE -c $count -W $timeout -s $size -q $track_ip &> /dev/null ;;
|
|
arping)
|
|
arping -I $DEVICE -c $count -w $timeout -q $track_ip &> /dev/null ;;
|
|
httping)
|
|
httping -y $SRC_IP -c $count -t $timeout -q $track_ip &> /dev/null ;;
|
|
esac
|
|
if [ $? -eq 0 ]; then
|
|
let host_up_count++
|
|
echo "up" > /var/run/mwan3track/$1/TRACK_${track_ip}
|
|
else
|
|
let lost++
|
|
echo "down" > /var/run/mwan3track/$1/TRACK_${track_ip}
|
|
fi
|
|
else
|
|
echo "skipped" > /var/run/mwan3track/$1/TRACK_${track_ip}
|
|
fi
|
|
done
|
|
|
|
if [ $host_up_count -lt $reliability ]; then
|
|
let score--
|
|
|
|
if [ $score -lt $up ]; then
|
|
score=0
|
|
[ ${keep_failure_interval} -eq 1 ] && {
|
|
sleep_time=$failure_interval
|
|
}
|
|
else
|
|
sleep_time=$failure_interval
|
|
fi
|
|
|
|
if [ $score -eq $up ]; then
|
|
echo "offline" > /var/run/mwan3track/$1/STATUS
|
|
$LOG 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 $(($down+$up)) ] && [ $lost -gt 0 ]; then
|
|
$LOG info "Lost $(($lost*$count)) ping(s) on interface $1 ($2)"
|
|
fi
|
|
|
|
let score++
|
|
lost=0
|
|
|
|
if [ $score -gt $up ]; then
|
|
echo "online" > /var/run/mwan3track/$1/STATUS
|
|
score=$(($down+$up))
|
|
elif [ $score -le $up ]; then
|
|
sleep_time=$recovery_interval
|
|
fi
|
|
|
|
if [ $score -eq $up ]; then
|
|
$LOG notice "Interface $1 ($2) is online"
|
|
echo "online" > /var/run/mwan3track/$1/STATUS
|
|
env -i ACTION=ifup INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
|
|
exit 0
|
|
fi
|
|
fi
|
|
|
|
let turn++
|
|
mkdir -p "/var/run/mwan3track/${1}"
|
|
echo "${lost}" > /var/run/mwan3track/$1/LOST
|
|
echo "${score}" > /var/run/mwan3track/$1/SCORE
|
|
echo "${turn}" > /var/run/mwan3track/$1/TURN
|
|
echo "$(date +'%s')" > /var/run/mwan3track/$1/TIME
|
|
|
|
host_up_count=0
|
|
sleep "${sleep_time}" &
|
|
wait
|
|
|
|
if [ "${IFDOWN_EVENT}" -eq 1 ]; then
|
|
score=0
|
|
echo "offline" > /var/run/mwan3track/$1/STATUS
|
|
IFDOWN_EVENT=0
|
|
fi
|
|
done
|
|
}
|
|
|
|
main "$@"
|