#! /bin/bash

set -u
set -e

# LUG is considered online if at least one of the ports on switch0 is up
# 4: Table switch 1
# 6: Table switch 2
# 25: Switch above fridge
PORTS="4 6 26"
AGENT="switch0"
OID_PREF="1.3.6.1.2.1.2.2.1.8."
COMMUNITY=public
SNMP_VERSION=1
STATUSFILE="/tmp/lug-status.dat"

for port in $PORTS; do
	status=`snmpget -v $SNMP_VERSION -c $COMMUNITY -O vq $AGENT $OID_PREF$port`
	if [ "$status" = "up" ]; then
		echo 1 > $STATUSFILE
		exit 0
	fi
done

# LUG is offline if all ports are down
echo 0 > $STATUSFILE