#!/bin/bash
###################created by Pascal Dokan Zahn #########################################
#
#       copyright (c) 2016 Pascal Dokan Zahn
# 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;
#
# 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.
#
# contact the author directly for more information at: pascalza@p-zahn.net
##########################################################################################
#Version 1.00


if [ ! "$#" == "5" ]; then
        echo -e "\nWarning: Wrong command line arguments. \nUsage: ./check_hp_printer <hostname> <community> <part> <warning> <critical>\n \nParts are:  black, yellow, cyan and magenta nExample: ./check_hp_printer 127.0.0.1 public black 80 95\n" && exit "3"
fi
strHostname=$1
strCommunity=$2
strpart=$3
strWarning=$4
strCritical=$5

# # Check whether the printer is availlable
TEST=$(snmpstatus -v 1 $Hostname -c "$strCommunity" -t 5 -r 0 2>&1)
# echo "Test: $TEST";
if [ "$TEST" == "Timeout: No Response from $strHostname" ]; then
echo "CRITICAL: SNMP to $strHostname is not available";
exit 2;
fi

# Black ink usage ---------------------------------------------------------------------------------------------------------------------------------------
if [ "$strpart" == "black" ]; then
        maxink=$(snmpget -v1 -c "$strCommunity" "$strHostname" 1.3.6.1.2.1.43.11.1.1.8.0.1 | awk '{print $4}' | sed 's/.\(.*\)...../\1/')
        left=$(snmpget -v1 -c "$strCommunity" "$strHostname" 1.3.6.1.2.1.43.11.1.1.9.0.1 | awk '{print $4}' | sed 's/.\(.*\)...../\1/')

        used=$(echo "scale=0; $maxink-$left" | bc -l)
        PERC=$(echo "scale=0; $used*100/$maxink" | bc -l)
        leftPerc=$(echo "scale=0; $left*100/$maxink" | bc -l)

        OUTPUT="Ink level:"$leftPerc%" left |Used=$PERC%;$strWarning;$strCritical;0;100"


        if [ $PERC -ge $strCritical ]; then
                echo "CRITICAL: "$OUTPUT
                exit 2

        elif [ $PERC -ge $strWarning ]; then
                echo "WARNING: "$OUTPUT
        exit 1
        else
                echo "OK: "$OUTPUT
                exit 0
        fi

# Yellow ink usage----------------------------------------------------------------------------------------------------------------------------------------------
elif [ "$strpart" == "yellow" ]; then
        maxink=$(snmpget -v1 -c "$strCommunity" "$strHostname" 1.3.6.1.2.1.43.11.1.1.8.0.2 | awk '{print $4}' | sed 's/.\(.*\)...../\1/')
        left=$(snmpget -v1 -c "$strCommunity" "$strHostname" 1.3.6.1.2.1.43.11.1.1.9.0.2 | awk '{print $4}' | sed 's/.\(.*\)...../\1/')

        used=$(echo "scale=0; $maxink-$left" | bc -l)
        PERC=$(echo "scale=0; $used*100/$maxink" | bc -l)
        leftPerc=$(echo "scale=0; $left*100/$maxink" | bc -l)

        OUTPUT="Ink level:"$leftPerc%" left |Used=$PERC%;$strWarning;$strCritical;0;100"


        if [ $PERC -ge $strCritical ]; then
                echo "CRITICAL: "$OUTPUT
                exit 2

        elif [ $PERC -ge $strWarning ]; then
                echo "WARNING: "$OUTPUT
        exit 1
        else
                echo "OK: "$OUTPUT
                exit 0
        fi

#Cyan ink usage------------------------------------------------------------------------------------------------------------------------
elif [ "$strpart" == "cyan" ]; then
        maxink=$(snmpget -v1 -c "$strCommunity" "$strHostname" 1.3.6.1.2.1.43.11.1.1.8.0.3 | awk '{print $4}' | sed 's/.\(.*\)...../\1/')
        left=$(snmpget -v1 -c "$strCommunity" "$strHostname" 1.3.6.1.2.1.43.11.1.1.9.0.3 | awk '{print $4}' | sed 's/.\(.*\)...../\1/')

        used=$(echo "scale=0; $maxink-$left" | bc -l)
        PERC=$(echo "scale=0; $used*100/$maxink" | bc -l)
        leftPerc=$(echo "scale=0; $left*100/$maxink" | bc -l)

        OUTPUT="Ink level:"$leftPerc%" left |Used=$PERC%;$strWarning;$strCritical;0;100"


        if [ $PERC -ge $strCritical ]; then
                echo "CRITICAL: "$OUTPUT
                exit 2

        elif [ $PERC -ge $strWarning ]; then
                echo "WARNING: "$OUTPUT
        exit 1
        else
                echo "OK: "$OUTPUT
                exit 0
        fi

#Magenta ink usage---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
#There is a bug in the HP MIB tree. You can't triger the maxink or left ink directly. It will show you "No such name error etc.".
#Fix: use snmpgetnext and it will find it. Curious but it works this way :-D.
elif [ "$strpart" == "magenta" ]; then
        maxink=$(snmpgetnext v1 -c "$strCommunity" "$strHostname" .1.3.6.1.2.1.43.11.1.1.8.0.3 | awk '{print $4}' | sed 's/.\(.*\)...../\1/')
        left=$(snmpgetnext -v1 -c "$strCommunity" "$strHostname" .1.3.6.1.2.1.43.11.1.1.9.0.3 | awk '{print $4}' | sed 's/.\(.*\)...../\1/')

        used=$(echo "scale=0; $maxink-$left" | bc -l)
        PERC=$(echo "scale=0; $used*100/$maxink" | bc -l)
        leftPerc=$(echo "scale=0; $left*100/$maxink" | bc -l)

        OUTPUT="Left Ink:"$leftPerc%" |Used=$PERC%;$strWarning;$strCritical;0;100"


        if [ $PERC -ge $strCritical ]; then
                echo "CRITICAL: "$OUTPUT
                exit 2

        elif [ $PERC -ge $strWarning ]; then
                echo "WARNING: "$OUTPUT
        exit 1
        else
                echo "OK: "$OUTPUT
                exit 0
        fi

# System Uptime----------------------------------------------------------------------------------------------------------------------------------------
elif [ "$strpart" == "systemuptime" ]; then
        uptime=$(snmpget -v1 -c "$strCommunity" "$strHostname" .1.3.6.1.2.1.1.3.0 | awk '{print $5, $6, $7, $8}')
                echo $uptime
                exit 0
#----------------------------------------------------------------------------------------------------------------------------------------------------
else
        echo -e "\nUnknown Part!" && exit "3"
fi
exit 0