#!/usr/local/bin/ksh93
# Copyright Florian Heigl(2008) 
# availability / other licences upon request. i refuse to think about it now.
# no warranties. 


# Syntax to be
# nagswitch -n <switch name> [-i <switch ip address] -c "Description String"


# Variables
#naghostname="vendor-model-num"	# switch hostname as used by nagios
#
#numports=16			# number of switchports
# will be enumerated via snmp, unless specified
# there are a few pieces that would not work with the switch being unreachable
# needs to some consideration
# also it seems some switches allow for per-vlan statistics and other stuff
# that will be shown as interfaces and need to be filtered, probably via
# iftype
#
#naghostname_ip="192.168."	
# our resolver mustn't be right so allow explicit ip for the mrtg base 
# filename.  later, if  not supplied, assume we're in default land and 
# nslookup it.

naghostname="msu1800-1"	
naghostname_ip="192.168.10.35"	
#numports=$(/usr/local/bin/snmpget -c public -v 1 $naghostname_ip IF-MIB::ifNumber.0 | awk '{print $4}')
numports=26
nagdescr="Nortel Metro Ethernet Services Unit 1800"

#naghostname="lcs-gs9420-1"
#naghostname_ip="192.168.10.36"
#numports=$(/usr/local/bin/snmpget -c public -v 1 $naghostname_ip IF-MIB::ifNumber.0 | awk '{print $4}')
#nagdescr="Longshine GS9420"


#for idx in $( /usr/local/bin/snmpwalk -c public -v 1 192.168.10.35 IF-MIB::ifIndex | awk '{print $NF}' ) ; do if [ $(snmpget -c public -v 1 192.168.10.35 IF-MIB::ifType.$idx | awk '{print $NF}' | cut -f1 -d\( ) = ethernetCsmacd ] ; then echo ethernet ; fi; done

echo "define host{
        use             generic-switch
        host_name       $naghostname
        alias           $nagdescr
        address         $naghostname_ip
        hostgroups      switches
        }" > $naghostname.cfg


echo "define service{
	use			generic-service
	host_name		$naghostname
	service_description	PING
        service_description     PING
        check_command           check_ping!200.0,20%!600.0,60%
        normal_check_interval   5
        retry_check_interval    1
}" >> $naghostname.cfg

	

# id of switchport padded with zeroes according to port number
# this isnt real padding yet, obviously. wc -c on numports will do though
typeset -Z02 idpad

for id in $( /usr/local/bin/snmpwalk -c public -v 1 $naghostname_ip IF-MIB::ifIndex | awk '{print $NF}' )

do 

ifType="$(snmpget -c public -v 1 192.168.10.35 IF-MIB::ifType.$id | awk '{print $NF}' | cut -f1 -d\( )"
if [ "X${ifType}" = "XethernetCsmacd" ] || [ "X${ifType}" = "XgigabitEthernet" ]

then

idpad="$id"
echo "define service{
        use                     generic-service
        host_name               $naghostname
        service_description     Port $idpad Link Status
        check_command           check_snmp!-C public -o ifOperStatus.$id -r 1 -m RFC1213-MIB
        }
define service{
        use                     generic-service
        host_name               $naghostname
        service_description     Port $idpad Bandwidth Usage
        check_command           check_local_mrtgtraf!/usr/local/www/mrtg/${naghostname_ip}_${id}.log!AVG!1000000,1000000!5000000,5000000!10
        }
define servicedependency{
	host_name			$naghostname
	service_description		Port $idpad Link Status
	dependent_host_name		$naghostname
	dependent_service_description	Port $idpad Bandwidth Usage
	execution_failure_criteria	w,c,u
	notification_failure_criteria	w,c,u
	}" >> $naghostname.cfg

if [ $id = 1 ]
 then 
   all_port_services="Port $idpad Link Status, Port $idpad Bandwidth Usage"
 else
   all_port_services="${all_port_services},Port $idpad Link Status, Port $idpad Bandwidth Usage"
fi

fi


done
echo "define servicedependency{
        host_name                       $naghostname
        service_description             PING
        dependent_host_name             $naghostname
        dependent_service_description   $all_port_services
        execution_failure_criteria      w,c,u
        notification_failure_criteria   w,c,u
}" >> $naghostname.cfg