# This script written with haste by Benjamin Rose, July 8th 2009 @ 11:45:42 AM
# It was written because the check_snmp plugin provided by the nagios package does not
# support range matching. It can check if the snmp value is greater than a given number
# but not less than, nor a range consisting of either a high value or a low value.
# Hence, this script, given a mode of 1 and a good range with which to work, will report
# back appropriately.
#
# Modes:
# 1 = Number comparison, reports on a given range. Argument order given in the usage statement.
# 2 = String comparison, which for now is just "Open" or otherwise. This is probably IAS specific.
#
# TODO: 1) Change the order of the arguments, putting mode in front of the variables, and then
#	   change the usage based on the given mode.
#	2) Allow the user to configure which strings are "good" and which are "bad".

#!/bin/sh

. /usr/lib64/nagios/plugins/utils.sh

if [ $# -ne 8 ]; then
	echo "Usage: ./check_snmp_wrapper community_string hostname mib low_critical_range low_warning_range high_warning_range high_critical_range mode";
	exit ${STATE_UNKNOWN};
fi

if [ $8 -eq 1 ]; then
	VALUE=`snmpget -v1 -c $1 $2 $3 | awk '{print $4}'`

	if [ "${VALUE}" == "" ]; then
		echo "NO RESPONSE!";
		exit ${STATE_UNKNOWN};
	elif [ ${VALUE} -lt $4 -o ${VALUE} -gt $7 ]; then
		echo "CRITICAL: ${VALUE}";
		exit ${STATE_CRITICAL}
	elif [ ${VALUE} -lt $5 -o ${VALUE} -gt $6 ]; then
		echo "WARNING: ${VALUE}";
		exit ${STATE_WARNING};
	fi
elif [ $8 -eq 2 ]; then
	VALUE=`snmpget -v1 -c $1 $2 $3 | awk '{print $4}' | sed s/\"// | sed s/\"//`

	if [ "${VALUE}" == "" ]; then
                echo "NO RESPONSE!";
                exit ${STATE_UNKNOWN};
	elif [ "${VALUE}" == "Open" ]; then
		echo "OK: ${VALUE}";
		exit ${STATE_OK};
	else
		echo "CRITICAL: Sensor ${VALUE}";
		exit ${STATE_CRITICAL};
	fi
else
	echo "mode should be 1 for number comparison, 2	for open/close comparison.";
        exit ${STATE_UNKNOWN};
fi


echo "OK: ${VALUE}";
exit ${STATE_OK};