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check_domain

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+#!/bin/bash
+
+################################################################################
+#                                                                              #
+#   This program is free software; you can redistribute it and/or modify       #
+#   it under the terms of the GNU General Public License as published by       #
+#   the Free Software Foundation; either version 2 of the License, or          #
+#   (at your option) any later version.                                        #
+#                                                                              #
+#   This program is distributed in the hope that it will be useful,            #
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of             #
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              #
+#   GNU General Public License for more details.                               #
+#                                                                              #
+#   You should have received a copy of the GNU General Public License          #
+#   along with this program; if not, write to the Free Software                #
+#   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  #
+#                                                                              #
+################################################################################
+
+# This is a Nagios plugin to check the expiration date of a domain name.
+# It uses the "whois" command, which usually comes as a "whois" package.
+# Debian/Ubuntu: apt-get install whois
+#
+# Original version had this copyright notice in it:
+# Copyright (c) 2005 Tomàs Núñez Lirola <tnunez@criptos.com>,
+#      2009-2012 Elan Ruusamäe <glen@delfi.ee>, under GPL License
+#
+# Ryan found it hosted at:
+# http://git.pld-linux.org/gitweb.cgi/?p=packages/nagios-plugin-check_domain.git
+#
+# This is a modified version, hosted at https://bitbucket.org/elyrith/check_domain
+# Currently supports .com, .ca, .tv, .ee, .ru
+# Support for .ca and .se by Ryan Loudfoot (ryan@loudfoot.ca)
+# Support for Performance Data by Ryan Loudfoot
+
+PROGRAM=${0##*/}
+PROGPATH=${0%/*}
+
+# Ryan's note: utils.sh is installed with nagios-plugins in with the plugins
+. $PROGPATH/utils.sh
+
+# Default values (days):
+critical=7
+warning=30
+
+# Parse arguments
+args=$(getopt -o hd:w:c:P: --long help,domain:,warning:,critical:,path: -u -n $PROGRAM -- "$@")
+if [ $? != 0 ]; then
+	echo >&2 "$PROGRAM: Could not parse arguments"
+	echo "Usage: $PROGRAM -h | -d <domain> [-c <critical>] [-w <warning>]"
+	exit 1
+fi
+set -- $args
+
+die() {
+	local rc=$1
+	local msg=$2
+	echo $msg
+	exit $rc
+}
+
+fullusage() {
+	cat <<EOF
+check_domain - v1.2.1
+
+This plugin checks the expiration date of a domain name.
+
+Usage: $PROGRAM -h | -d <domain> [-c <critical>] [-w <warning>]
+NOTE: -d must be specified
+
+Options:
+-h
+     Print detailed help
+-d
+     Domain name to check
+-w
+     Response time to result in warning status (days)
+-c
+     Response time to result in critical status (days)
+
+This plugin will use whois service to get the expiration date for the domain name.
+Example:
+     $PROGRAM -d domain.tld -w 30 -c 10
+
+Currently supports .com, .ca, .tv, .ee, .ru
+
+EOF
+}
+
+while :; do
+	case "$1" in
+		-c|--critical) critical=$2; shift 2;;
+		-w|--warning)  warning=$2; shift 2;;
+		-d|--domain)   domain=$2; shift 2;;
+		-P|--path)     whoispath=$2; shift 2;;
+		-h|--help)     fullusage; exit;;
+		--) shift; break;;
+		*)  die $STATE_UNKNOWN "Internal error!";;
+	esac
+done
+
+if [ -z $domain ]; then
+	die $STATE_UNKNOWN "UNKNOWN - There is no domain name to check"
+fi
+
+# Looking for whois binary
+if [ -z $whoispath ]; then
+	type whois > /dev/null 2>&1 || die $STATE_UNKNOWN "UNKNOWN - Unable to find whois binary in your path. Is it installed? Please specify path."
+	whois=whois
+else
+	[ -x "$whoispath/whois" ] || die $STATE_UNKNOWN "UNKNOWN - Unable to find whois binary, you specified an incorrect path"
+	whois="$whoispath/whois"
+fi
+
+out=$($whois $domain)
+
+# Calculate days until expiration
+case "$domain" in
+*.com)
+	expiration=$(echo "$out" | awk -F: '/Expiration Date:/{print substr($0, length($1) + 2)}')
+	;;
+*.ru)
+	expiration=$(echo "$out" | awk '/paid-till:/{split($2, a, "."); printf("%s-%s-%s\n", a[1], a[2], a[3])}')
+	;;
+*.ee)
+	expiration=$(echo "$out" | awk '/expire:/{split($2, a, "."); printf("%s-%s-%s\n", a[3], a[2], a[1])}')
+	;;
+*.tv)
+	expiration=$(echo "$out" | awk -F: '/Expiration Date:/{print substr($0, length($1) + 3, 10)}')
+	;;
+*.ca)
+	expiration=$(echo "$out" | awk '/Expiry date:/{split($3, a, "/"); printf("%s/%s/%s\n", a[2], a[3], a[1])}')
+	;;
+*.se)
+	expiration=$(echo "$out" | awk '/expires:/{split($2, a, "-"); printf("%s-%s-%s\n", a[1], a[2], a[3])}')
+	;;
+*)
+	expiration=$(echo "$out" | awk -F: '/Expiration Date:/{print substr($0, length($1) + 2)}')
+	;;
+esac
+
+# For debugging only:
+# echo $expiration
+
+[ -z "$expiration" ] && die $STATE_UNKNOWN "UNKNOWN - Domain doesn't exist or no WHOIS server available."
+
+expseconds=$(date +%s --date="$expiration")
+expdate=$(date +'%Y-%m-%d' --date="$expiration")
+nowseconds=$(date +%s)
+diffseconds=$((expseconds-nowseconds))
+expdays=$((diffseconds/86400))
+
+# Trigger alarms if applicable
+#[ $expdays -lt 0 ] && die $STATE_CRITICAL "CRITICAL - Domain expired on $expiration. | Warning: $warning, Critical: $critical"
+#[ $expdays -lt $critical ] && die $STATE_CRITICAL "CRITICAL - Domain will expire in $expdays days ($expdate). | Warning: $warning, Critical: $critical"
+#[ $expdays -lt $warning ] && die $STATE_WARNING "WARNING - Domain will expire in $expdays days ($expdate). | Warning: $warning, Critical: $critical"
+
+# No alarms? Ok, everything is right.
+echo "OK - Domain will expire in $expdays days ($expdate). | Warning: $warning, Critical: $critical"
+exit $STATE_OK