#!/bin/bash
#
# RS 20160524
#
# # Check LACP-Ports on switches, using IEEE8023-LAG-MIB
#
# IEEE8023-LAG-MIB *must* be installed!
#
OK=0
CRITICAL=2
STATE=0
PLUGIN_PATH="/usr/local/nagios/libexec/plugins"
OID_sysDescr=SNMPv2-MIB::sysDescr.0
OID_lag=1.2.840.10006.300.43.1
#OID_lag=1.2.840.10006.300.43.1.1
VERSION="0.1"

print_version() {
  echo "$SCRIPTNAME" version "$VERSION"
  echo "This nagios plugins comes with ABSOLUTELY NO WARRANTY."
  echo "You may redistribute copies of the plugins under the terms of the GNU General Public License v2."
  echo "Author: SicherByte GmbH Dr. Ralf Schwedler"
  echo "Itzehoe - 2016"
  echo "schwedler@sicherbyte.com"
}

print_help() {
  print_version
  echo ""
  echo "check integrity of LACP links"
  echo ""
  echo "-H ADDRESS (default: 127.0.0.1)"
  echo "-c COMMUNITY (default: public)"
  echo "-g LACP GROUP (default: 1)"
#  echo "-p Port name"
#  echo "-n number of link in a LACP bundle"
  echo "-V Print version"
  echo "-h this help"
}

ADDRESS="127.0.0.1"
COMMUNITY="public"
GROUP="1"

while getopts H:c:g:Vh OPT
do
    case "$OPT" in
	H) HOSTNAME="$OPTARG"
	   ;;
	c) COMMUNITY="$OPTARG"
	   ;;
	g) GROUP="$OPTARG"
	   ;;
	V) print_version
	   exit $STATE
	   ;;
	h) print_help
	   ;; 
	esac
done

echo $(snmpwalk -v 1 -c $COMMUNITY $HOSTNAME $OID_sysDescr|sed -e 's/^.* = STRING: //') " LACP group " $GROUP

#Get system infomation
sysinfo=`snmpwalk -v 1 -c $COMMUNITY $HOSTNAME $OID_sysDescr| awk 'NR==1 {print $4}'` 
# 3Com

# snmpwalk -v 1 -c $COMMUNITY $HOSTNAME IF-MIB::ifDescr
# liefert alle Portnamen, grep -w "\ $portname$" | awk -F '[{. }]'  '{print $2}'` liefert fuer einen Namen die portid
#

# snmpwalk -v 1 -c $COMMUNITY $HOSTNAME IF-MIB::ifAlias
# liefert die Portbeschreibungen

# snmpwalk -v 1 -c $COMMUNITY $HOSTNAME IF-MIB::ifSpeed
# liefert die Portgeschwindigkeiten

# snmpwalk -mALL -v 1 -c $COMMUNITY $HOSTNAME $OID_lag

# IEEE8023-LAG-MIB::dot3adAggActorSystemID.<g>
# .1.2.840.10006.300.43.1.1.1.1.4
# IEEE8023-LAG-MIB::dot3adAggActorAdminKey.<g> !!! ungleich !!!
# .1.2.840.10006.300.43.1.1.1.1.6
# IEEE8023-LAG-MIB::dot3adAggActorOperKey.<g>  !!!
# .1.2.840.10006.300.43.1.1.1.1.7

SYSID=$(snmpwalk -v 1 -c $COMMUNITY $HOSTNAME -Oq -Oe -Ov 1.2.840.10006.300.43.1.1.1.1.4.$GROUP)

# echo $SYSID

if [[ -z $SYSID ]]
then
echo $HOSTNAME LACP group $GROUP not found / not reachable
exit 2
fi

ADMINKEY=$(snmpwalk -v 1 -c $COMMUNITY $HOSTNAME -Oq -Oe -Ov 1.2.840.10006.300.43.1.1.1.1.6.$GROUP)

# echo $ADMINKEY

if [[ -z $SYSID ]]
then
echo Admin Key for $HOSTNAME LACP group $GROUP not found
exit 2
fi

OPERKEY=$(snmpwalk -v 1 -c $COMMUNITY $HOSTNAME -Oq -Oe -Ov 1.2.840.10006.300.43.1.1.1.1.7.$GROUP)

# echo $OPERKEY

if [[ -z $SYSID ]]
then
echo Oper Key for $HOSTNAME LACP group $GROUP not found
exit 2
fi

# IEEE8023-LAG-MIB::dot3adAggPortActorOperKey
# 1.2.840.10006.300.43.1.2.1.1.5
# Port -> OperKey

PORTS=$(snmpwalk -mALL -v 1 -c $COMMUNITY $HOSTNAME -Oq 1.2.840.10006.300.43.1.2.1.1.5 | sed -e 's/^.*\.//' -e 's/\( [0-9]*\)/\1X/' | egrep " $OPERKEY""X" | sed -e 's/ .*//')

# snmpwalk -mALL -v 1 -c $COMMUNITY $HOSTNAME -Oq 1.2.840.10006.300.43.1.2.1.1.5

NUMPORTS=$(echo $PORTS | wc -w)



# echo $PORTS $NUMPORTS

# IEEE8023-LAG-MIB::dot3adAggPortActorOperState
# 1.2.840.10006.300.43.1.2.1.1.21

ERRORS=0

for i in $PORTS
do
	CODE=$(snmpwalk -mALL -v 1 -c $COMMUNITY $HOSTNAME -Oq 1.2.840.10006.300.43.1.2.1.1.21.$i | sed -e 's/[^"]*"//' -e 's/ .*//' -e 's/".*//')
	# echo X$CODE""X
	if [[ $CODE != "3D" && $CODE != "BC" ]]
	then
		((ERRORS = ERRORS+1))
	fi	
		# echo $ERRORS
		echo -n $(snmpwalk -mALL -v 1 -c $COMMUNITY $HOSTNAME 1.3.6.1.2.1.2.2.1.2.$i | sed -e 's/^[^=]*= //' -e 's/STRING: //') " "
		snmpwalk -mALL -v 1 -c $COMMUNITY $HOSTNAME 1.2.840.10006.300.43.1.2.1.1.21.$i | sed -e 's/.*BITS: //'
	# fi
done

# echo $PORTS $NUMPORTS $ERRORS

if (( ERRORS > 0 ))
then
	if (( ERRORS == NUMPORTS ))
	then
		exit 2
	else
		exit 1
	fi	
else
	exit 0
fi