#!/bin/bash

# Licensed under GPL. See http://www.fsf.org/licensing/licenses/gpl.html#SEC1
# Based on private work from Patrik Schindler <poc@pocnet.net> (c) 2005

MYNAME=`basename $0`
PROGPATH=`echo $0 |sed -e 's,[\\/][^\\/][^\\/]*$,,'`
test -x $PROGPATH/utils.sh && . $PROGPATH/utils.sh

# Ohne Parameter blöde machen
if [ $# -lt 1 ]; then
	printf "Usage: ${MYNAME} -h host -c snmp-community [version]\n"
	exit ${STATE_UNKNOWN}
fi

# Optionen parsen: Getopt unter Shell ist der größte Mist, wenn's um : Args geht
NEXT_IS_H=0
NEXT_IS_C=0
NEXT_IS_END=0
#
OPTSTRING=`getopt "vc:h:" $*`
test $? -ne 0 && exit ${STATE_UNKNOWN}
for OPTION in ${OPTSTRING}; do
	if [ ${NEXT_IS_H} -eq 1 ]; then
		HOST=$OPTION
		NEXT_IS_H=0
	elif [ ${NEXT_IS_C} -eq 1 ]; then
		COMMUNITY=$OPTION
		NEXT_IS_C=0
	elif [ ${NEXT_IS_END} -eq 1 ]; then
		NEEDED_VERSION=$OPTION
		NEXT_IS_END=0
	fi

	case "${OPTION}" in
		"-v")
			echo '$Id: check_snmp_cisco_ios,v 1.3 2007/06/07 09:36:39 pschindler Exp $'
			exit ${STATE_UNKNOWN}
		;;
		"-c")
			NEXT_IS_C=1
		;;
		"-h")
			NEXT_IS_H=1
		;;
		"--")
			NEXT_IS_END=1
		;;
	esac
done

unset NEXT_IS_C NEXT_IS_H NEXT_IS_END

# Sanity Check
if [ -z "${HOST}" ]; then
	echo "You MUST supply a host to monitor."
	exit ${STATE_UNKNOWN}
fi
if [ -z "${COMMUNITY}" ]; then
	echo "You MUST supply a snmp community."
	exit ${STATE_UNKNOWN}
fi

# Next, get neccessary information
ERR=0
VERSION=`snmpget -v1 -OQv -c "${COMMUNITY}" "${HOST}" SNMPv2-MIB::sysDescr.0 |fgrep 'Version ' |sed 's/^.*, Version \(.*\), .*$/\1/'` || ERR=`expr ${ERR} + 1`

if [ ${ERR} -gt 0 ]; then
	echo "SNMP Error."
	exit ${STATE_UNKNOWN}
fi

if [ -z "${NEEDED_VERSION}" ]; then
	echo "${VERSION}"
	exit ${STATE_OK}
fi

if [ "${NEEDED_VERSION}" = "${VERSION}" ]; then
	echo "Version OK: ${VERSION}"
	exit ${STATE_OK}
else
	echo "Version WARNING: ${VERSION} != ${NEEDED_VERSION}"
	exit ${STATE_WARNING}
fi

# EOF