#!/bin/bash
#
# Copyright (c) 2009, Mark Shirley 
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
#
#	-Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
#	-Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
#	-The name of the contributor may not be used to endorse or promote products derived from this software without specific prior written permission.

#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#
#
#
#

# This will attempt to locate existing lpstat command.  Modify if neccessary.
LPSTAT=`which lpstat`

while [ $# -gt 0 ]
do
	case $1 in
		-h)
			HOST=$2
			shift 2
		;;
		-p)
			PRINTER=$2
			shift 2
		;;
		*)
			echo "The arguments to use are"
			echo "-h: The host of the CUPS server"
			echo "-p: The CUPS printer name"
			shift 1
		;;
	esac
done

error_file=$(mktemp)
RESULT=$($LPSTAT -h $HOST -p $PRINTER 2>$error_file)
ERRORS=$(< $error_file)
rm $error_file


# Due to lpstat returning a "printing" regardless of the printer rejecting or unable to connect i moved those up higher in the case
case $RESULT in
	*Rejecting*)
		OUTPUT="Critical - $PRINTER is rejecting jobs"
		EXIT=2
	;;
        *Unable*)
		OUTPUT="Critical - CUPS Unable to connect to $PRINTER"
        	EXIT=2
	;;
        *idle*)
		OUTPUT="OK - $PRINTER is idle"
        	EXIT=0
	;;
        *printing*)
		OUTPUT="OK - $PRINTER is printing"
        	EXIT=0
	;;
        *disabled*)
		OUTPUT="CRITICAL - $PRINTER is stopped" 
        	EXIT=2
	;;
	*)
		OUTPUT="CRITICAL - Unknown error occured while checking $PRINTER"
		EXIT=2
	;;
esac

echo $OUTPUT
echo $ERRORS
exit $EXIT