#!/bin/sh

# bare-bones check_senderscore plugin for nagios

# default thresholds
warn=95
crit=90

while getopts 'H:w:c:' opt
do
	case "$opt" in
		H)	host="$OPTARG";;
		w)	warn="$OPTARG";;
		c)	crit="$OPTARG";;
	esac
done

revip=`echo $host | awk -F . '{print $4"."$3"."$2"."$1".score.senderscore.com"}'`
score=`dig a $revip +short | awk -F . '{print $4""}'`

if [ -z "$score" ]; then
	echo 'SenderScore OK:' "$host" '(no score yet)'
	exit 0 # ok
elif [ "$score" -gt "$warn" ]; then
	echo 'SenderScore OK:' "$host:" $score
	exit 0 # ok
elif [ $score -gt $crit ]; then
	echo 'SenderScore WARNING:' "$host:" $score
	exit 1 # warning
elif [ $score -le $crit ]; then
	echo 'SenderScore CRITICAL:' "$host:" $score
	exit 2 # critical
else
	echo 'SenderScore UNKNOWN'
	exit 3 # unknown
fi