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#!/bin/sh
. /lib/functions.sh
. /lib/functions/network.sh
. /lib/mwan3/mwan3.sh
LOG="logger -t mwan3[$$] -p"
[ "$ACTION" = "connected" -o "$ACTION" = "disconnected" ] || exit 1
[ -n "$INTERFACE" ] || exit 2
if [ "$ACTION" = "connected" ]; then
[ -n "$DEVICE" ] || exit 3
fi
config_load mwan3
config_get_bool enabled globals 'enabled' '0'
config_get local_source globals 'local_source' 'none'
[ ${enabled} = "1" ] || exit 0
[ ${local_source} = "none" ] || exit 0
config_get enabled $INTERFACE enabled 0
config_get online_metric $INTERFACE online_metric 0
[ "$enabled" == "1" ] || exit 0
if [ "$online_metric" = 0 ]; then
$LOG notice "No online metric for interface "$INTERFACE" found"
exit 0
fi
mwan3_add_failover_metric() {
local iface="$1"
local device="$2"
local metric="$3"
local route_args
config_get family $iface family ipv4
if [ "$family" == "ipv4" ]; then
if ubus call network.interface.${iface}_4 status 1>/dev/null 2>&1; then
network_get_gateway route_args ${iface}_4
else
network_get_gateway route_args $iface
fi
if [ -n "$route_args" -a "$route_args" != "0.0.0.0" ]; then
route_args="via $route_args"
else
route_args=""
fi
$IP4 route add default $route_args dev $device proto static metric $metric 1>/dev/null 2>&1
fi
if [ "$family" == "ipv6" ]; then
if ubus call network.interface.${iface}_6 status 1>/dev/null 2>&1; then
network_get_gateway6 route_args ${iface}_6
else
network_get_gateway6 route_args $iface
fi
if [ -n "$route_args" -a "$route_args" != "::" ]; then
route_args="via $route_args"
else
route_args=""
fi
$IP6 route add default $route_args dev $device proto static metric $metric 1>/dev/null 2>&1
fi
}
mwan3_del_failover_metric() {
local iface="$1"
local device="$2"
local metric="$3"
config_get family $iface family ipv4
if [ "$family" == "ipv4" ]; then
$IP4 route del default dev $device proto static metric $metric 1>/dev/null 2>&1
fi
if [ "$family" == "ipv6" ]; then
$IP6 route del default dev $device proto static metric $metric 1>/dev/null 2>&1
fi
}
case "$ACTION" in
connected)
mwan3_add_failover_metric "$INTERFACE" "$DEVICE" "$online_metric"
;;
disconnected)
mwan3_del_failover_metric "$INTERFACE" "$DEVICE" "$online_metric"
;;
esac
exit 0
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