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#!/bin/bash
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# Nagios check
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# Check the number of days before an internet domain expire
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# 2017-08-05 Patrice Nadeau <pnadeau@patricenadeau.com>
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# TODO Should use the arguments (short and long) -w -c
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# Version
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declare -r VERSION="0.0.03"
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# Copyright
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declare -r COPYRIGHT="Copyright 2014,2017 Patrice Nadeau <pnadeau@patricenadeau.com>"
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# OK
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declare -r RETURN_OK=0
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# Warning
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declare -r RETURN_WARNING=1
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# Critical
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declare -r RETURN_CRITICAL=2
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# Unknow
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declare -r RETURN_UNKNOW=3
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# State of the check, undefined when starting
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declare STATE=$RETURN_UNKNOW
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# Expiration date
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declare EXPIRATION
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function print_revision {
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echo "${0##*/} version $VERSION"
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echo "$COPYRIGHT"
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}
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function print_help {
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# use cat << EOF
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print_revision
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cat << EOF
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This plugin check the expiration date for an internet domain
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Usage: ${0##*/} DOMAIN WARNINGDAYS CRITICALDAYS
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DOMAIN domain name to be verified
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WARNINGDAYS days before a warning message is issued
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CRITICALDAYS days before a critical messages is issued
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The order of the arguments MUST be in that order
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EOF
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}
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# Check if help as been invoked
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if [[ $# -eq 1 ]]
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then
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case $1 in
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"-h" | "--help")
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print_help
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;;
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"-V" | "--version")
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print_revision
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;;
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*)
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echo "CRITICAL: Unknown option"
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echo "Try ${0##*/} -h"
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;;
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esac
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exit $RETURN_CRITICAL
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fi
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# Check if whois is installed
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which whois &>> /dev/null
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if [[ $? -gt 0 ]]
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then
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echo "whois is not installed !"
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exit $RETURN_UNKNOW
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fi
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# Check if all 3 argments (-h -w -c) have been given
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if [ $# -lt 3 ]
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then
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echo "CRITICAL: Missing arguments !"
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exit $RETURN_CRITICAL
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fi
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# Get the top level domain
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TLD=`echo $1 | awk -F"." '{print $NF}'`
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# Find the expiration date depending on the top level domain
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case $TLD in
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ca)
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# cira.ca
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EXPIRATION=`whois -H $1 | grep "Expiry date" | awk '{print $3}'`
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;;
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com | net)
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EXPIRATION=`whois -H $1 | grep "Registry Expiry Date" | head -n 1 | awk '{print $4}'`
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;;
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edu)
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EXPIRATION=`whois -H $1 | grep "Domain expires" | awk '{print $3}'`
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;;
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gov)
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# rs.internic.net
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echo "CRITICAL: No date is returned for this TLD"
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exit $RETURN_CRITICAL
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;;
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us | biz | co)
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# The date contains space (Fri Apr 17 23:59:59 GMT 2015)
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EXPIRATION=`whois -H $1 | grep "Domain Expiration Date" | awk '{print $5, $6, $9}'`
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;;
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info | xxx | org)
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# The date contain the time
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EXPIRATION=`whois -H $1 | grep "Registry Expiry Date" | awk '{print $4}'`
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;;
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me)
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# There's no space between the description and the date
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EXPIRATION=`whois -H $1 | grep "Domain Expiration Date" | awk -F":" '{print $2}'`
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;;
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mobi)
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# There's no space between the description and the date
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EXPIRATION=`whois -H $1 | grep "Expiration Date" | awk -F":" '{print $2}'`
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;;
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tv)
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# Date is in format 2015-03-18T17:16:19.0Z
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EXPIRATION=`whois -H $1 | grep "Registrar Registration Expiration Date" | awk '{print $5}'`
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echo $EXPIRATION
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;;
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*)
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echo "CRITICAL: This TLD is not supported yet"
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exit $RETURN_CRITICAL
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;;
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esac
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# Check if the domain exist
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if [[ -z $EXPIRATION ]]
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then
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echo "CRITICAL: Domain not found"
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exit $RETURN_CRITICAL
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fi
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# Calculate the number of days between the expiration and now
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DAYS=$(( ($(date --date="$EXPIRATION" +%s) - $(date +%s) )/(60*60*24) ))
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# Check if the number of days is OK, Warning or Critical range
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if [[ $DAYS -gt $2 ]]
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then
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echo -ne "OK: "
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STATE=$RETURN_OK
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else
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if [[ $DAYS -gt $3 ]]
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then
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echo -ne "WARNING: "
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STATE=$RETURN_WARNING
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else
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echo -ne "CRITICAL: "
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STATE=$RETURN_CRITICAL
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fi
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fi
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echo -ne "$DAYS"
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if [[ $DAYS -ge 0 ]]
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then
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echo " days before expiration"
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else
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echo " days since expiration"
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fi
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exit $STATE
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