#! /bin/sh

# (c) 2008-2009 Tomas Ruzicka <t.ruzicka@smc.at> <tom@horses-online.cz>
# requires the H150E-MIB and Nagios plugin's utils.sh
#
# TR-2009-05-12
# FIX - CPU load would set WARNING even if previous check's state was CRITICAL
# ADD - check also the extension card status of all cards and sumarize it
# MOD - uptime moved from the first place in returned string behind the system/cards state and CPU load
# MOD - now using snmpget instead of snmpwalk and also the -O parameter instead of all the "sed"s
# MOD - CPU warning/critical marks and the snmp community are optional now defaulting to 0 for the marks resp. public for the community string
#
# TR-2008-07-28 - initial release (skeleton based on nagios's 'check_log')

PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin

PROGNAME=`basename $0`
PROGPATH=`dirname $0`
REVISION="TR-2009-05-12"

. $PROGPATH/utils.sh

print_usage() {
  echo "Usage: $PROGNAME -H hostname_or_ip-address [-C community] [-w load -c load]"
  echo "Usage: $PROGNAME -V|--version"
  echo "Usage: $PROGNAME --help"
}

print_help() {
  #print_revision $PROGNAME $REVISION
  echo $PROGNAME $REVISION
  echo ""
  print_usage
  echo ""
  echo "This plugin checks hardware status of a Siemens HiPath 3000 phone system."
  echo ""
  #support
}

# some defaults
RETVAL=$STATE_OK
RETURN=
STATE="OK"
SNMP="snmpget -v 1 -m +H150E-MIB -O qve -c"
SNMP2="snmpget -v 1 -m +H150E-MIB -O qv -c"
PARAM_WARN=0
PARAM_CRIT=0

#check if at least one parameter set
if [ $# -lt 1 ]; then
    print_usage
    exit $STATE_UNKNOWN
fi

# walk through all the parameters
while test -n "$1"; do
  case "$1" in
    --help|-h)
        print_help
        exit $STATE_OK
        ;;
    --version|-V|-v)
        echo $PROGNAME $REVISION
        exit $STATE_OK
        ;;
    -H|--host)
        PARAM_HOST=$2
        shift
        ;;
    -C|--community)
        PARAM_COMMUNITY=$2
        shift
        ;;
    -w|--warn|--warning)
        PARAM_WARN=$2
        shift
        ;;
    -c|--crit|--critical)
        PARAM_CRIT=$2
        shift
        ;;
  esac
  shift
done

# check for host parameter
if [ -z $PARAM_HOST ]; then
  echo "UNKNOWN - Host parameter missing"
  exit $STATE_UNKNOWN
fi

# check for SNMP community
test -z $PARAM_COMMUNITY \
  && TST=`$SNMP public $PARAM_HOST h150eSysState.0` \
  || TST=`$SNMP $PARAM_COMMUNITY $PARAM_HOST h150eSysState.0`
test -z $TST && TST=0
if [ $TST -gt 0 -a $TST -lt 6 ]; then
  test -z $PARAM_COMMUNITY && PARAM_COMMUNITY="public"
  SNMP="$SNMP $PARAM_COMMUNITY $PARAM_HOST"
  SNMP2="$SNMP2 $PARAM_COMMUNITY $PARAM_HOST"
else
  echo "UNKNOWN - bad host ($PARAM_HOST) or community string ($PARAM_COMMUNITY) or SNMP not working"
  exit $STATE_UNKNOWN
fi

# overall system state
H_SYSSTATE=`$SNMP h150eSysState.0`
test $H_SYSSTATE -ge 2 && RETVAL=$STATE_WARNING
test $H_SYSSTATE -ge 4 && RETVAL=$STATE_CRITICAL
RETURN="Overall system state(`$SNMP2 h150eSysState.0`)"

# state of the installed extension cards
H_CARDCOUNT=`$SNMP numberOfSlotTableEntries.0`
H_FAILEDCARDS=0
for i in `seq 1 $H_CARDCOUNT`; do
  H_CARDSTATE=`$SNMP cardState.$i`
  test $H_CARDSTATE -ge 2 -a $RETVAL -lt $STATE_WARNING && RETVAL=$STATE_WARNING
  test $H_CARDSTATE -ge 4 && RETVAL=$STATE_CRITICAL
  if [ $H_CARDSTATE -gt 1 ]; then
    test $H_FAILEDCARDS -eq 0 && RETURN="$RETURN; Failing expansion cards:" || RETURN="$RETURN,"
    RETURN="$RETURN `$SNMP cardType.$i|sed -e 's/\"//g'`(`$SNMP2 cardState.$i`)"
    ((H_FAILEDCARDS=$H_FAILEDCARDS+1))
  fi
done
test $H_FAILEDCARDS -eq 0 && RETURN="$RETURN; All $H_CARDCOUNT expansion cards(normal)"

# CPU load in percent
H_LOAD=`$SNMP h150eLoadLevel.0`
RETURN="$RETURN; CPU Load $H_LOAD%"
if [ $PARAM_WARN -gt 0 -a $PARAM_CRIT -gt $PARAM_WARN ]; then
  test $H_LOAD -gt $PARAM_WARN -a $RETVAL -lt $STATE_WARNING && RETVAL=$STATE_WARNING
  test $H_LOAD -gt $PARAM_CRIT && RETVAL=$STATE_CRITICAL
  RETURN="$RETURN (w/c $PARAM_WARN%/$PARAM_CRIT%)"
fi

# uptime
UPTIME=`$SNMP sysUpTimeInstance`
RETURN="$RETURN; Uptime: $UPTIME"

test $RETVAL -eq $STATE_WARNING && STATE="Warning"
test $RETVAL -eq $STATE_CRITICAL && STATE="Critical"

echo "$STATE - $RETURN"
exit $RETVAL