add all network printers found via snmp call

masonje · 05-15-2013, 11:20 AM

I have a task to add all the network printers found on a local LAN segment on our Linux thin clients. I think I have some of the fundamentals down on how to find them via an snmp discovery, and I now some of the basics on how to add a cups printer (not in the code snippit), but the thing I'm stuck on is how to get the information split up into usable chunks.

Here is the basic code for the discovery:

Code:

#!/bin/bash

tfile=/tmp/snmp.log
[ -f $tfile ] && rm $tfile

/usr/lib/cups/backend/snmp 2>&1 | tee $tfile

while read line           
do
	#echo "line - ${line}"
	typ=$(echo $line | awk '{ print $1 }')
	socket=$(echo $line | awk '{ print $2 }')
	if [ "$typ" = "network" ]
	then
		echo "Adding network printer $socket"
	else
		echo "skipping: $line"
	fi
done < $tfile

The resulting code will come back with a temp file like this:
network socket://192.168.24.12 "Canon iR5070 35.05" "Canon iR5070 35.05" "" "description x"
network socket://192.168.24.13 "Canon iR3570 35.06" "Canon iR3570 35.06" "" "description y"
network socket://192.168.24.15 "Canon iR5070 37.01" "Canon iR5070 37.01" "" ""
network socket://192.168.24.16 "Canon iR5070 37.01" "Canon iR5070 37.01" "" "Location x"

So here is my question. How to do I split each line into the usable chucks. I'm thinking a regular expression, but to be honest, sometimes those blow my mind on how to set them up. I'm thinking I (for example) in line:
network socket://192.168.24.12 "Canon iR5070 35.05" "Canon iR5070 35.05" "" "description x"

...I would need to remove the "network socket://192.168.24.12" so I'm just left with:
"Canon iR5070 35.05" "Canon iR5070 35.05" "" "description x"

...then split each field into variables so I can use them in the lpadmin command later:
var1="Canon iR5070 35.05"
var2="Canon iR5070 35.05"
var3=""
var4="description x"

Anyone know how I would accomplish this?

Habitual · 05-15-2013, 12:09 PM

Mad props on the discovery.

You are wise.
RE is the way to "go", but I lack the .fu myself, however, one possible solution could be...

Code:

cut -d\" -f2 x

or

Code:

cut -d\" -f2- x

but I got varying unsanitized output.YMMV.

where x has ...

Code:

network socket://192.168.24.12 "Canon iR5070 35.05" "Canon iR5070 35.05" "" "description x"
network socket://192.168.24.13 "Canon iR3570 35.06" "Canon iR3570 35.06" "" "description y"
network socket://192.168.24.15 "Canon iR5070 37.01" "Canon iR5070 37.01" "" ""
network socket://192.168.24.16 "Canon iR5070 37.01" "Canon iR5070 37.01" "" "Location x"

HTH.

masonje · 05-15-2013, 12:21 PM

Thanks Habitual. For what it's worth, this is what I have so far. I asked a co-worker and this was the method he suggested. That said, I have a bunch more work to figure out on dealing with cups drivers. I'll post the final code when I'm done.

Code:

#!/bin/bash

#~ set -x

tfile=/tmp/snmp.log
[ -f $tfile ] && rm $tfile

/usr/lib/cups/backend/snmp 2>&1 | tee $tfile

while read line           
do
	#echo "line - ${line}"
	typ=$(echo $line | awk '{ print $1 }')
	socket=$(echo $line | awk '{ print $2 }')
	if [ "$typ" = "network" ]
	then
		echo "Adding network printer $socket"
		newLine=$(echo $line | sed 's/^network[^\"]*\"//')
		v1=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $1 }')
		v2=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $2 }')
		v3=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $3 }')
		v4=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $4 }' | sed 's/\"//g')
		lpinfo --make-and-model "$v1" -m
	else
		echo "skipping: $line"
	fi
done < $tfile

Habitual · 05-15-2013, 12:28 PM

Quote:

Originally Posted by masonje

I'll post the final code when I'm done.

Subscribed with Interest...

masonje · 05-16-2013, 04:06 PM

Well the script is getting closer. Haven't decided on if I want to flat out install all the drivers we will need on the device, or figure out a creative way to do that.

Only thing I haven't quite figured out is how to deal with printers that come back with snmp names like "Lexmark Lexmark E360dn", when if I was to query for just "Lexmark E360dn", I find a driver. I REEEEELY don't want to have to come up with a case statement looking for known stupid returned names.

You can add your own log_msg log sub. We actually have an "include" that is sort of proprietary.

Code:

#!/bin/bash

#~ set -x

function log_msg(){
	echo  "$1 - $2"
	#~ return $TRUE
}


LOG="/tmp/printerInstall.log"

tnDriver=/tmp/noDriver.txt
tfile=/tmp/snmp.log
tdriver=/tmp/drivers.log
[ -f $tfile ] && rm -f $tfile
[ -f $tnDriver ] && rm -f $tnDriver

/usr/lib/cups/backend/snmp 2>&1 | tee $tfile

while read line           
do
	log_msg Info "--------------------------------------------------------------" true
	#echo "line - ${line}"
	typ=$(echo $line | awk '{ print $1 }')
	socket=$(echo $line | awk '{ print $2 }')
	if [ "$typ" = "network" ]
	then
		log_msg Info "Adding network printer $line" true
		newLine=$(echo $line | sed 's/^network[^\"]*\"//')
		v1=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $1 }')
		v2=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $2 }')
		v3=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $3 }')
		v4=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $4 }' | sed 's/\"//g')
		
		[ -f $tdriver ] && rm -f $tdriver
		lpinfo --make-and-model "$v1" -m 2>&1 | tee $tdriver
		dvr=$(lpinfo --make-and-model "$v1" -m)
		
		if [ 1 -ne $(cat $tdriver  | wc -c) ]
		then
			log_msg Info "Drivers found" true
			
			if [ 0 -ne $(cat $tdriver | grep -E -w 'drv|foomatic|ppd.gz' | wc -c) ]
			then
				driver=""
				while read dline
				do
					driverTest=$(echo $dline | awk '{ print $1 }')
					#~ echo $driverTest
					#~ echo "-- ${driverTest:0:4}"
					if [ "${driverTest:0:4}" -a "drv:" ]
					then
						log_msg Info "Found driver: $driverTest" true
						driver=$(echo $driverTest)
					fi
					#~ echo "-- ${driverTest:0:4}"
					if [ "${driverTest:0:4}" -a "lsb\/" ]
					then
						log_msg Info "Found driver: $driverTest" true
						driver=$(echo $driverTest)
					fi
					#~ echo "-- ${driverTest:0:9}"
					if [ "${driverTest:0:9}" -a "foomatic:" ]
					then
						log_msg Info "Found driver: $driverTest" true
						driver=$(echo $driverTest)
					fi
				done < $tdriver
				#~ exit
				
				#setup label
				if [ -z "$v4" ]
				then
					label=$(echo $v1 | sed 's/\ //g')
					desc=" "
				else
					label=$(echo $v1 | sed 's/\ //g')-$(echo $v4 | sed 's/\ //g')
					desc=" -L \"$v4\" "
				fi
				
				if [ $(echo ${#driver}) -gt 0 ]
				then
					log_msg Info "Run command: lpadmin -E -p $label -v $socket -m "$driver"$desc-E" true
					lpadmin -E -p $label -v $socket -m "$driver"$desc-E
					ret=$?
					if [ $ret -eq 0 ]
					then
						lpadmin -d $label
						ret=$?
						if [ $ret -eq 0 ]
						then
							log_msg Info "Default printer: $label" true
						else
							log_msg Error "** failed to set printer as default: $ret" true
						fi
					else
						log_msg Error "** failed to add printer: $ret" true
					fi
				else
					log_msg Error "** No proper drivers found for printer" true
					echo $v1 >> $tnDriver
				fi
				
			else
				log_msg Warning "No PPD driver found" true
				echo $v1 >> $tnDriver
			fi
		else
			log_msg Info "Drivers NOT found for: $v1" true
			echo $v1 >> $tnDriver
		fi
	else
		log_msg Info "skipping: $line" true
		
	fi
done < $tfile

log_msg Info "Script complete" true

masonje · 05-22-2013, 03:20 PM

Just got done putting some finishing touches on this. I had to run another script to sort of gather an inventory at all our sites so I knew how to deal with some of the odd-ball returns I was getting from the snmp call. Hope this helps someone else!

Code:

#!/bin/bash

#~ set -x

function log_msg(){
	echo  "$1 - $2"
}

function InstallPrinter(){
	#~ log_msg Info "Starting printer install" true
	
	fSocket=$1
	fLabel=$2
	fDriver=$3
	fDesc=$4
	
	log_msg Info "Label: $fLabel" true
	log_msg Info "Driver: $fDriver" true
	log_msg Info "Description: $fDesc" true
	
	#remove 
	lpadmin -x $fLabel
	log_msg Info "Remove prevous printer: $?" true
	
	if [ $(echo ${#fDriver}) -gt 0 ]
	then
		driverUsed="-m ${fDriver} "
	else
		driverUsed=""
		log_msg Info "** Using CUPS default driver" true
	fi
	
	descUsed=""
	if [ $(echo ${#fDesc}) -gt 0 ]
	then
		descUsed=" -L $(echo ${fDesc} | sed 's/\ /\-/g')"
	fi
	
	lpadminCmd="-E -p ${fLabel} -v ${fSocket}:9100 ${driverUsed} ${descUsed} -E"
	log_msg Info "Comand: lpadmin $lpadminCmd" true 
	lpadmin $lpadminCmd
	
	ret=$?
	if [ $ret -eq 0 ]
	then
		lpadmin -d $label
		ret=$?
		if [ $ret -eq 0 ]
		then
			log_msg Info "Default printer: $fLabel" true
			RETURN=0
		else
			log_msg Error "** failed to set printer as default: $ret" true
			RETURN=1
		fi
	else
		log_msg Error "** failed to add printer: $ret" true
		RETURN=1
	fi
	
	#~ log_msg Info "Exit printer install: $RETURN" true
	return $RETURN
}


tnDriver=/tmp/noDriver.txt
tfile=/tmp/snmp.log
tdriver=/tmp/drivers.log
[ -f $tfile ] && rm -f $tfile
[ -f $tnDriver ] && rm -f $tnDriver

#discover all network snmp printers
/usr/lib/cups/backend/snmp 2>&1 | tee $tfile

while read line           
do
	log_msg Info "--------------------------------------------------------------" true
	#echo "line - ${line}"
	typ=$(echo $line | awk '{ print $1 }')
	socket=$(echo $line | awk '{ print $2 }')
	if [ "$typ" = "network" ]
	then
		driver=""
		dvr=""
		driverTest=""
		driverUsed=""
		
		log_msg Info "Adding network printer $line" true
		newLine=$(echo $line | sed 's/^network[^\"]*\"//')
		v1=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $1 }')
		v2=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $2 }')
		v3=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $3 }')
		v4=$(echo $newLine | awk 'BEGIN { FS="\" \"" } { print $4 }' | sed 's/\"//g')
		
		#printer name cleanup
		#--------------------------------------------------------------------------------------------------------------------------
		if [ "$v1" == "Unknown" ]
		then
			log_msg Warning "Printer label \"Unknown\". Using $v2" true
			v1=$v2
		fi
		
		v1=$(echo $v1 | sed 's/Lexmark\ Lexmark/Lexmark/g')
		v1=$(echo $v1 | sed 's/Lexmark\ \ Lexmark/Lexmark/g')
		if [ "${v1:0:5}" == "Canon" ]
		then
			#~ log_msg Info "Current Canon model: $v1" true
			v1=$(echo $v1 | sed 's/[^\n][^\n]\.[^\n][^\n]$//g')
			v1=$(echo $v1 | sed 's/[^\n]\.[^\n]$//g')
			#~ log_msg Info "Updated Canon model: $v1" true
		fi
		if [ $(echo "${v1}" | grep -E -w -i 'optra' | wc -c)  -gt 0 ]
			then
			v1="Lexmark Optra $(echo "$v1" | awk '{ print $3 }')"
		fi
		if [ "${v1:0:9}" == "Lexmark T" ]
		then
			v1="Lexmark $(echo "$v1" | awk '{ print $2 }')"
		fi
		#--------------------------------------------------------------------------------------------------------------------------
		#printer name cleanup
		
		#setup printer name
		if [ -z "$v4" ]
		then
			label=$(echo $v1 | sed 's/\ //g')
			desc=""
		else
			label=$(echo $v1 | sed 's/\ //g')-$(echo $v4 | sed 's/\ //g')
			desc=$v4
		fi
		
		log_msg Info "Searching driver set for: $v1" true
		[ -f $tdriver ] && rm -f $tdriver
		lpinfo --make-and-model "$v1" -m 2>&1 | tee $tdriver
		
		#Check to see if the device has drivers for this printer
		if [ "$(cat $tdriver  | wc -c)"  -gt "31" ]
		then
			log_msg Info "Drivers found" true
			
			#drv|foomatic|ppd.gz
			if [ 0 -ne $(cat $tdriver | grep -E -w 'drv|foomatic|ppd' | wc -c) ]
			then
				driver=""
				fInstall=1
				while read dline
				do
					driver=""
					driverTest=$(echo $dline | awk '{ print $1 }')
					#~ echo "-- $driverTest"
					
					#~ echo "-- ${driverTest:0:4}"
					if [ "${driverTest:0:4}" == "drv:" ]
					then
						log_msg Info "Found driver (drv:): $driverTest" true
						driver=$(echo $driverTest)
					#~ else
						#~ echo "not drv\:"
					fi
				
					#~ echo "-- ${driverTest:0:9}"
					if [ "${driverTest:0:9}" == "foomatic:" ]
					then
						log_msg Info "Found driver (foomatic:): $driverTest" true
						driver=$(echo $driverTest)
					#~ else
						#~ echo "not foomatic:"
					fi
					
					#~ echo "-- ${driverTest:0:3}"
					if [ "${driverTest:0:3}" == "lsb" ]
					then
						log_msg Info "Found driver (lsb): $driverTest" true
						driver=$(echo $driverTest)
					#~ else
						#~ echo "not lsb:"
					fi
					
					if [ $fInstall -gt 0 ]
					then
						if [ $(echo ${#driver}) -gt 0 ]
						then
							InstallPrinter  $socket $label "$driver" "${desc}"
							fInstall=$?
						else
							log_msg Info "** Driver found not to be proper: $driverTest" true
						fi
					else
						log_msg Info "Proper driver already found, skipping: $driverTest" true
					fi
					echo "--------------------------"
					
				done < $tdriver
			else
				log_msg Warning "** No drv|foomatic|ppd.gz driver found" true
				#~ echo $v1 >> $tnDriver
			fi
			
			#~ if [ 0 -ne $fInstall ]
			#~ then
				#~ driver=""
				#~ while read dline
				#~ do
					#~ if [ $? -ne 0 ]
					#~ then
						#~ driverTest=$(echo $dline | awk '{ print $1 }')
						#~ InstallPrinter  $socket $label $driverTest "${desc}"
					#~ else
						#~ log_msg Info "Skip driver $driverTest" true
					#~ fi
				#~ done < $tdriver
			#~ else
				#~ log_msg Info "Install complete: $label" true
				echo $v1 >> $tnDriver
			#~ fi
		else
			log_msg Warning "Drivers NOT found for: $v1" true
			echo $v1 >> $tnDriver
		fi
	else
		log_msg Info "skipping: $line" true
		
	fi
done < $tfile

log_msg Info "Script complete" true