#!/usr/bin/ksh

############################### check_snmp_enterasys_poe #########################
# Version : 1.0                                                                  #
# Date : 01 Jun 2016                                                             #
# Author : Gleber Ribeiro Leite (gleberrl@yahoo.com.br)                          #
# Contributor(s):                                                                #
##################################################################################
#                                                                                #
# Help : ./check_snmp_enterasys_poe -h                                           #
#                                                                                #
##################################################################################

#Declare variables
warning=""
community="0"
ip="0"
critical=0
snmp_version=0
protocol_security=""
authentication_passphrase=""
security_level=""
protocol_key=""
protocol_passphrase=""
username=""

#Create argument(s)
while getopts ":hC:H:w:c:p:v:a:A:l:x:X:u:" optname
        do
                case "$optname" in
                        "h")
                                printf "\nUsage: check_snmp_enterasys_poe -H [IP ADDRESS] -C [COMMUNITY] -c [CRITICAL VALUE] -v [SNMP_Version - 2/3]\n\n-H --> IP ADDRESS\n-C --> COMMUNITY SNMP_V2\n-v --> SNMP Version\n-w --> WARNING VALUE [OPTIONAL]\n-c --> CRITICAL VALUE\n=====If SNMP_V3=====\n-a --> protocol (MD5/SHA)\n-A --> Authentication PASSPHRASE\n-l --> security level (noAuthNoPriv|authNoPriv|authPriv)\n-x --> Protocol (DES|AES)\n-X --> Protocol PASSPHRASE\n-u --> Username (Security Username)\n\n"
                                exit
                        ;;
                        "C")
                                community=$OPTARG
                        ;;
                        "H")
                                ip=$OPTARG
                        ;;
                        "v")
                                snmp_version=$OPTARG
                        ;;
                        "a")
                                protocol_security=$OPTARG
                        ;;
                        "A")
                                authentication_passphrase=$OPTARG
                        ;;
                        "l")
                                security_level=$OPTARG
                        ;;
                        "x")
                                protocol_key=$OPTARG
                        ;;
                        "X")
                                protocol_passphrase=$OPTARG
                        ;;
                        "u")
                                username=$OPTARG
                        ;;
                        "w")
                                warning=$OPTARG
                        ;;
                        "c")
                                critical=$OPTARG
                        ;;
                        \?)
                                printf "\nUnknown option argument: \"-$OPTARG\"\nMore info with \"check_snmp_enterasys_poe -h\"\n\n" >&2
                                exit 2;
                        ;;
                esac
        done


#Check the required argument(s)
if [[ $community != "0"  &&  $ip != "0"  &&  $snmp_version == "2" ]]; then

	POE_WATTS=`snmpwalk $ip -v2c $community SNMPv2-SMI::enterprises.5624.1.2.50.1.5.1.1.2 | awk '{ s+=$4} END {printf "%.2f", s}'`

fi

if [[ $ip != "0"  &&  $snmp_version == "3" ]]; then

	POE_WATTS=`snmpwalk $ip -v $snmp_version -a $protocol_security -A $authentication_passphrase -l $security_level -x $protocol_key -X $protocol_passphrase -u $username SNMPv2-SMI::enterprises.5624.1.2.50.1.5.1.1.2 | awk '{ s+=$4} END {printf "%.2f", s}'`

fi

(( POE_TOTAL = $POE_WATTS / 1000.00 ))

#Possibles outputs
        if [ $POE_TOTAL -gt $warning ]; then #If locked channels are equal zero

                echo "OK;POE TOTAL WATTS = $POE_TOTAL W | $SERVICEOUTPUT$=$POE_TOTAL"
                exit 0;

        elif [[ $POE_TOTAL -le $warning && $POE_TOTAL -gt $critical ]]; then  #If locked channels are equal than warning value

                echo "WARNING;POE TOTAL WATTS = $POE_TOTAL W | $SERVICEOUTPUT$=$POE_TOTAL"
                exit 1;

        elif [ $POE_TOTAL -le $critical ]; then #If locked channels are greater than critical value

                echo "CRITICAL;POE TOTAL WATTS = $POE_TOTAL W | $SERVICEOUTPUT$=$POE_TOTAL"
                exit 2;

	else

		echo "Error\nPOE TOTAL WATTS = $POE_TOTAL W | $SERVICEOUTPUT$=$POE_TOTAL"
		exit 3;

        fi

else #output when no arguments

        printf "\nUsage: check_snmp_enterasys_poe -h \n\n"
	exit 1;
fi