#!/bin/sh

PROG=check_eapol
USAGE="USAGE: ${PROG} -c CONFIGFILE -a ADDRESS -s SECRET [-p PORT] [-t TIMEOUT] [-d]"

OK=0
WARN=1
CRIT=2
UNKNOWN=3

usage(){
  printf 'USAGE: %s -c CONFIGFILE -a ADDRESS -s SECRET [-p PORT] [-t TIMEOUT] [-d]' "$PROG"
  exit "$UNKNOWN"
}

die(){
  printf '%s: %s\n' "$PROG" "$1" 1>&2
  exit "$UNKNOWN"
}

port=1812
timeout=5
debug=false

while getopts :a:c:dp:s:t: opt; do
  case $opt in
    a)   address=$OPTARG ;;
    c)   config=$OPTARG ;;
    d)   debug=true ;;
    p)   port=$OPTARG ;;
    s)   secret=$OPTARG ;;
    t)   timeout=$OPTARG ;;
    :|?) usage ;;
  esac
done
shift $((OPTIND - 1 ))

[ $# -eq 0 ] || usage
[ -r "$config" ] || die "config file not readable: ${config}"
if [ -z "$address" ] || [ -z "$config" ] || [ -z "$secret" ]; then
  usage
fi

if [ "$debug" = true ]; then
  eapol_test -c "$config"  -a "$address" -p "$port" -s "$secret" -t "$timeout"
else
  eapol_test -c "$config"  -a "$address" -p "$port" -s "$secret" -t "$timeout" > /dev/null
fi

if [ $? -eq 0 ]; then
  echo "authentication to ${address}:${port} using ${config} succeeded"
  exit "$OK"
else
  echo "authentication to ${address}:${port} using ${config} failed"
  exit "$CRIT"
fi