check_drupal

#!/bin/bash
#
# Drupal monitoring plugin for Nagios
#
# Requires a Drupal module from http://drupal.org/project/nagios
#
# Copyright 2009 Khalid Baheyeldin http://2bits.com
#
ECHO="/bin/echo"
GREP="/bin/egrep"
RM="/bin/rm"
WGET="/usr/bin/wget"
SSL=/bin/false

PROGNAME=`/usr/bin/basename $0`
PROGPATH=`echo $0 | sed -e 's,[\\/][^\\/][^\\/]*$,,'`
REVISION=`echo '$Revision: 1.1.2.12 $' | sed -e 's/[^0-9.]//g'`

temp=/tmp/$PROGNAME.$$

if [[ -e $PROGPATH/utils.sh ]]; then
  . $PROGPATH/utils.sh
elif [[ -e /usr/lib/nagios/plugins/utils.sh ]]; then
  . /usr/lib/nagios/plugins/utils.sh
else
  echo 'Could not find nagios utils include file!'
  exit 1
fi

print_usage() {
  $ECHO "Usage: $PROGNAME -U unique_id [ -H host_name ] [ -P path_to_nagios_status_page ] [ -t time_out_seconds ]"
  $ECHO "Usage: $PROGNAME --help"
  $ECHO "Usage: $PROGNAME --version"
}

print_help() {
  print_revision $PROGNAME $REVISION
  $ECHO ""
  print_usage
  $ECHO ""
  $ECHO "Drupal monitoring plugin for Nagios"
  $ECHO ""
  support
}

# Make sure the correct number of command line
# arguments have been supplied
if [ $# -lt 1 ]; then
  print_usage
  exit $STATE_UNKNOWN
fi

# Grab the command line arguments

exitstatus=$STATE_WARNING

while test -n "$1"; do
  case "$1" in
    --help)
      print_help
      exit $STATE_OK
      ;;
    -h)
      print_help
      exit $STATE_OK
      ;;
    --version)
      print_revision $PROGNAME $REVISION
      exit $STATE_OK
      ;;
    -V)
      print_revision $PROGNAME $REVISION
      exit $STATE_OK
      ;;
    -H)
      hostname=$2
      shift
      ;;
    -U)
      unique_id=$2
      shift
      ;;
    -P)
      path=$2
      shift
      ;;
    -S)
      SSL=/bin/true
      shift
      ;;
    -t) 
      timeout=$2
      shift
            ;;
    *)
      $ECHO "Unknown argument: $1"
      print_usage
      exit $STATE_UNKNOWN
  esac
  shift
done

# Set a default for hostname
if [ "$hostname" = "" ]; then
  hostname=$NAGIOS_HOSTADDRESS
fi

# Set a default for path
if [ "$path" = "" ]; then
  path="nagios"
fi

# Set the default for timeout
if [ "$timeout" = "" ]; then
  timeout=2
fi

# Set the default for timeout
if [ "$unique_id" = "" ]; then
  unique_id="Nagios"
fi


if $SSL; then
  CMD=("$WGET" --no-check-certificate -S -T $timeout -O "$temp" -U "$unique_id" "https://$hostname/$path")
else
  CMD=("$WGET" -S -T $timeout -O "$temp" -U "$unique_id" http://$hostname/$path)
fi

HTTP="$( "${CMD[@]}" 2>&1 | "$GREP" "HTTP/1" )"
RC=$?

if [ "$RC" != 0 ]; then
  $ECHO "wget error: $RC: when accessing $hostname/$path. HTTP: $HTTP"
  $RM -f $temp
  exit $STATE_CRITICAL
fi

HTTP_CODE=`$ECHO "$HTTP" | awk '{print $2}'`
if [ "$HTTP_CODE" != "200" ]; then
  $ECHO "HTTP returned an error code. HTTP: $HTTP"
  $RM -f $temp
  exit $STATE_CRITICAL
fi

DATA="`$GREP "nagios=" $temp | sed -e 's/^.*nagios=//g'`"

STATUS=`$ECHO "$DATA" | awk -F, '{print $1}'`

case $STATUS in
"OK")
  exitstatus=$STATE_OK
  ;;
"WARNING")
  exitstatus=$STATE_WARNING
  ;;
"UNAUTHORIZED")
  exitstatus=$STATE_CRITICAL
  ;;
"CRITICAL")
  exitstatus=$STATE_CRITICAL
  ;;
*)
  exitstatus=$STATE_UNKNOWN
  ;;
esac

# Send the data
$ECHO "DRUPAL $DATA"

$RM -f $temp

exit $exitstatus