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[check_openmanage.git] / check_openmanage

#!/usr/bin/perl
#
# Nagios plugin
#
# Monitor Dell server hardware status using Dell OpenManage Server
# Administrator, either locally via NRPE, or remotely via SNMP.
#
# $Id$
#
# Copyright (C) 2009 Trond H. Amundsen
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

require 5.006;  # Perl v5.6.0 or newer is required
use strict;
use warnings;
use POSIX qw(isatty ceil);
use Getopt::Long qw(:config no_ignore_case);

# Global (package) variables used throughout the code
use vars qw( $NAME $VERSION $AUTHOR $CONTACT $E_OK $E_WARNING $E_CRITICAL
	     $E_UNKNOWN $FW_LOCK $USAGE $HELP $LICENSE
	     $snmp_session $snmp_error $omreport $globalstatus $global
	     $linebreak $omopt_chassis $omopt_system $blade
	     $exit_code $snmp
	     %check %opt %perfdata %reverse_exitcode %status2nagios
	     %snmp_status %snmp_probestatus %probestatus2nagios %sysinfo
	     %blacklist %nagios_alert_count %count
	     @controllers @enclosures
	     @report_storage @report_chassis @report_other
	  );

#---------------------------------------------------------------------
# Initialization and global variables
#---------------------------------------------------------------------

# If we don't have a TTY, the plugin is probably run by Nagios. In
# that case, redirect all output to STDERR to STDOUT. Nagios ignores
# output to STDERR.
if (! isatty *STDOUT) {
    open STDERR, '>&', 'STDOUT'
      or do { print "ERROR: Couldn't redirect STDERR to STDOUT\n"; exit 2; }
}

# Version and similar info
$NAME    = 'check_openmanage';
$VERSION = '3.5.0-beta13';
$AUTHOR  = 'Trond H. Amundsen';
$CONTACT = 't.h.amundsen@usit.uio.no';

# Exit codes
$E_OK       = 0;
$E_WARNING  = 1;
$E_CRITICAL = 2;
$E_UNKNOWN  = 3;

# Firmware update lock file [FIXME: location on Windows?]
$FW_LOCK = '/var/lock/.spsetup';  # default on Linux

# Usage text
$USAGE = <<"END_USAGE";
Usage: $NAME [OPTION]...
END_USAGE

# Help text
$HELP = <<'END_HELP';

GENERAL OPTIONS:

   -p, --perfdata      Output performance data
   -t, --timeout       Plugin timeout in seconds
   -c, --critical      Customise temperature critical limits
   -w, --warning       Customise temperature warning limits
   -d, --debug         Debug output, reports everything
   -h, --help          Display this help text
   -V, --version       Display version info

SNMP OPTIONS:

   -H, --hostname      Hostname or IP of the server (needed for SNMP)
   -C, --community     SNMP community string
   -P, --protocol      SNMP protocol version
   --port              SNMP port number

OUTPUT OPTIONS:

   -i, --info          Prefix any alerts with the service tag
   -e, --extinfo       Append system info to alerts
   -s, --state         Prefix alerts with alert state
   --short-state       Prefix alerts with alert state (abbreviated)
   -o, --okinfo        Verbosity when check result is OK
   --htmlinfo          HTML output with clickable links

CHECK CONTROL AND BLACKLISTING:

   -a, --all           Check everything, even log content
   -b, --blacklist     Blacklist missing and/or failed components
   --only              Only check a certain component or alert type
   --check             Fine-tune which components are checked

For more information and advanced options, see the manual page or URL:
  http://folk.uio.no/trondham/software/check_openmanage.html
END_HELP

# Version and license text
$LICENSE = <<"END_LICENSE";
$NAME $VERSION
Copyright (C) 2009 $AUTHOR
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by $AUTHOR <$CONTACT>
END_LICENSE

# Options with default values
%opt = ( 'blacklist'         => [],
	 'check'             => [],
	 'critical'          => [],
	 'warning'           => [],
	 'timeout'           => 30,  # default timeout is 30 seconds
	 'debug'             => 0,
	 'help'              => 0,
	 'perfdata'          => undef,
	 'info'              => 0,
	 'extinfo'           => 0,
	 'htmlinfo'          => undef,
	 'postmsg'           => undef,
	 'state'             => 0,
	 'short-state'       => 0,
	 'okinfo'            => 0,   # default "ok" output level
	 'linebreak'         => undef,
	 'version'           => 0,
         'all'               => 0,
	 'only'              => undef,
	 'omreport'          => undef,
	 'port'              => 161, # default SNMP port
	 'hostname'          => undef,
	 'community'         => 'public',  # SMNP v1 or v2c
	 'protocol'          => 2,
	 'username'          => undef, # SMNP v3
	 'authpassword'      => undef, # SMNP v3
	 'authkey'           => undef, # SMNP v3
	 'authprotocol'      => undef, # SMNP v3
	 'privpassword'      => undef, # SMNP v3
	 'privkey'           => undef, # SMNP v3
	 'privprotocol'      => undef, # SMNP v3
       );

# Get options
GetOptions('b|blacklist=s'      => \@{ $opt{blacklist} },
	   'check=s'            => \@{ $opt{check} },
	   'c|critical=s'       => \@{ $opt{critical} },
	   'w|warning=s'        => \@{ $opt{warning} },
	   't|timeout=i'        => \$opt{timeout},
	   'd|debug'            => \$opt{debug},
	   'h|help'             => \$opt{help},
	   'V|version'          => \$opt{version},
	   'p|perfdata:s'       => \$opt{perfdata},
	   'i|info'             => \$opt{info},
	   'e|extinfo'          => \$opt{extinfo},
	   'htmlinfo:s'         => \$opt{htmlinfo},
	   'postmsg=s'          => \$opt{postmsg},
	   's|state'            => \$opt{state},
	   'short-state'        => \$opt{shortstate},
	   'o|ok-info=i'        => \$opt{okinfo},
	   'l|linebreak=s'      => \$opt{linebreak},
	   'a|all'              => \$opt{all},
	   'only=s'             => \$opt{only},
	   'omreport=s'         => \$opt{omreport},
	   'port=i'             => \$opt{port},
	   'H|hostname=s'       => \$opt{hostname},
	   'C|community=s'      => \$opt{community},
	   'P|protocol=i'       => \$opt{protocol},
	   'U|username=s'       => \$opt{username},
	   'authpassword=s'     => \$opt{authpassword},
	   'authkey=s'          => \$opt{authkey},
	   'authprotocol=s'     => \$opt{authprotocol},
	   'privpassword=s'     => \$opt{privpassword},
	   'privkey=s'          => \$opt{privkey},
	   'privprotocol=s'     => \$opt{privprotocol},
	  ) or do { print $USAGE; exit $E_UNKNOWN };

# If user requested help
if ($opt{help}) {
    print $USAGE, $HELP;
    exit $E_OK;
}

# If user requested version info
if ($opt{version}) {
    print $LICENSE;
    exit $E_OK;
}

# Setting timeout
$SIG{ALRM} = sub {
    print "PLUGIN TIMEOUT: $NAME timed out after $opt{timeout} seconds\n";
    exit $E_UNKNOWN;
};
alarm $opt{timeout};

# If we're using SNMP
$snmp = defined $opt{hostname} ? 1 : 0;

# SNMP session variables
$snmp_session = undef;
$snmp_error   = undef;

# The omreport command
$omreport = undef;

# Check flags, override available with the --check option
%check = ( 'storage'     => 1,   # check storage subsystem
	   'memory'      => 1,   # check memory (dimms)
	   'fans'        => 1,   # check fan status
	   'power'       => 1,   # check power supplies
	   'temp'        => 1,   # check temperature
	   'cpu'         => 1,   # check processors
	   'voltage'     => 1,   # check voltage
	   'batteries'   => 1,   # check battery probes
	   'amperage'    => 1,   # check power consumption
	   'intrusion'   => 1,   # check intrusion detection
	   'alertlog'    => 0,   # check the alert log
	   'esmlog'      => 0,   # check the ESM log (hardware log)
	   'esmhealth'   => 1,   # check the ESM log overall health
	 );

# Default line break
$linebreak = isatty(*STDOUT) ? "\n" : '<br/>';

# Line break from option
if (defined $opt{linebreak}) {
    if ($opt{linebreak} eq 'REG') {
	$linebreak = "\n";
    }
    elsif ($opt{linebreak} eq 'HTML') {
	$linebreak = '<br/>';
    }
    else {
	$linebreak = $opt{linebreak};
    }
}

# Exit with status=UNKNOWN if there is firmware upgrade in progress
if (!$snmp && -f $FW_LOCK) {
    print "MONITORING DISABLED - Firmware update in progress ($FW_LOCK exists)\n";
    exit $E_UNKNOWN;
}

# List of controllers and enclosures
@controllers = ();  # controllers
@enclosures  = ();  # enclosures

# Messages
@report_storage = ();  # messages with associated nagios level (storage)
@report_chassis = ();  # messages with associated nagios level (chassis)
@report_other   = ();  # messages with associated nagios level (other)

# Counters for everything
%count
  = (
     'pdisk'  => 0, # number of physical disks
     'vdisk'  => 0, # number of logical drives (virtual disks)
     'temp'   => 0, # number of temperature probes
     'volt'   => 0, # number of voltage probes
     'amp'    => 0, # number of amperage probes
     'intr'   => 0, # number of intrusion probes
     'dimm'   => 0, # number of memory modules
     'fan'    => 0, # number of fan probes
     'cpu'    => 0, # number of CPUs
     'bat'    => 0, # number of batteries
     'power'  => 0, # number of power supplies
     'esm'    => {
		  'Critical'     => 0, # critical entries in ESM log
		  'Non-Critical' => 0, # warning entries in ESM log
		  'Ok'           => 0, # ok entries in ESM log
		 },
     'alert'  => {
		  'Critical'     => 0, # critical entries in alert log
		  'Non-Critical' => 0, # warning entries in alert log
		  'Ok'           => 0, # ok entries in alert log
		 },
    );

# Performance data
%perfdata = ();

# Global health status
$global         = 1;      # default is to check global status
$globalstatus   = $E_OK;  # default global health status is "OK"

# Nagios error levels reversed
%reverse_exitcode
  = (
     $E_OK       => 'OK',
     $E_WARNING  => 'WARNING',
     $E_CRITICAL => 'CRITICAL',
     $E_UNKNOWN  => 'UNKNOWN',
    );

# OpenManage (omreport) and SNMP error levels
%status2nagios
  = (
     'Unknown'         => $E_CRITICAL,
     'Critical'        => $E_CRITICAL,
     'Non-Critical'    => $E_WARNING,
     'Ok'              => $E_OK,
     'Non-Recoverable' => $E_CRITICAL,
     'Other'           => $E_CRITICAL,
    );

# Status via SNMP
%snmp_status
  = (
     1 => 'Other',
     2 => 'Unknown',
     3 => 'Ok',
     4 => 'Non-Critical',
     5 => 'Critical',
     6 => 'Non-Recoverable',
    );

# Probe Status via SNMP
%snmp_probestatus
  = (
     1  => 'Other',               # probe status is not one of the following:
     2  => 'Unknown',             # probe status is unknown (not known or monitored)
     3  => 'Ok',                  # probe is reporting a value within the thresholds
     4  => 'nonCriticalUpper',    # probe has crossed upper noncritical threshold
     5  => 'criticalUpper',       # probe has crossed upper critical threshold
     6  => 'nonRecoverableUpper', # probe has crossed upper non-recoverable threshold
     7  => 'nonCriticalLower',    # probe has crossed lower noncritical threshold
     8  => 'criticalLower',       # probe has crossed lower critical threshold
     9  => 'nonRecoverableLower', # probe has crossed lower non-recoverable threshold
     10 => 'failed',              # probe is not functional
    );

# Probe status translated to Nagios alarm levels
%probestatus2nagios
  = (
     'Other'               => $E_CRITICAL,
     'Unknown'             => $E_CRITICAL,
     'Ok'                  => $E_OK,
     'nonCriticalUpper'    => $E_WARNING,
     'criticalUpper'       => $E_CRITICAL,
     'nonRecoverableUpper' => $E_CRITICAL,
     'nonCriticalLower'    => $E_WARNING,
     'criticalLower'       => $E_CRITICAL,
     'nonRecoverableLower' => $E_CRITICAL,
     'failed'              => $E_CRITICAL,
    );

# System information gathered
%sysinfo
  = (
     'bios'     => 'N/A',  # BIOS version
     'biosdate' => 'N/A',  # BIOS release date
     'serial'   => 'N/A',  # serial number (service tag)
     'model'    => 'N/A',  # system model
     'osname'   => 'N/A',  # OS name
     'osver'    => 'N/A',  # OS version
     'om'       => 'N/A',  # OMSA version
     'bmc'      => 0,      # HAS baseboard management controller (BMC)
     'rac'      => 0,      # HAS remote access controller (RAC)
     'rac_name' => 'N/A',  # remote access controller (RAC)
     'bmc_fw'   => 'N/A',  # BMC firmware
     'rac_fw'   => 'N/A',  # RAC firmware
    );

# Adjust which checks to perform
adjust_checks() if defined $opt{check};

# Blacklisted components
%blacklist = defined $opt{blacklist} ? %{ get_blacklist() } : ();

# If blacklisting is in effect, don't check global health status
if (scalar keys %blacklist > 0) {
    $global = 0;
}

# Take into account new hardware and blades
$omopt_chassis = 'chassis';  # default "chassis" option to omreport
$omopt_system  = 'system';   # default "system" option to omreport
$blade         = 0;          # if this is a blade system

# Some initializations and checking before we begin
if ($snmp) {
    snmp_initialize();    # initialize SNMP
    snmp_check();         # check that SNMP works
    snmp_detect_blade();  # detect blade via SNMP
}
else {
    # Find the omreport binary
    find_omreport();
    # Check help output from omreport, see which options are available.
    # Also detecting blade via omreport.
    check_omreport_options();
}


#---------------------------------------------------------------------
# Helper functions
#---------------------------------------------------------------------

#
# Store a message in one of the message arrays
#
sub report {
    my ($type, $msg, $exval, $id) = @_;
    defined $id or $id = q{};

    my %type2array
      = (
	 'storage' => \@report_storage,
	 'chassis' => \@report_chassis,
	 'other'   => \@report_other,
	);

    return push @{ $type2array{$type} }, [ $msg, $exval, $id ];
}


#
# Run command, put resulting output lines in an array and return a
# pointer to that array
#
sub run_command {
    my $command = shift;

    open my $CMD, '-|', $command
      or do { report('other', "Couldn't run command '$command': $!", $E_UNKNOWN)
		and return [] };
    my @lines = <$CMD>;
    close $CMD
      or do { report('other', "Couldn't close filehandle for command '$command': $!", $E_UNKNOWN)
		and return \@lines };
    return \@lines;
}

#
# Run command, put resulting output in a string variable and return it
#
sub slurp_command {
    my $command = shift;

    open my $CMD, '-|', $command
      or do { report('other', "Couldn't run command '$command': $!", $E_UNKNOWN) and return };
    my $rawtext = do { local $/ = undef; <$CMD> }; # slurping
    close $CMD;

    # NOTE: We don't check the return value of close() since omreport
    # does something weird sometimes.

    return $rawtext;
}

#
# Initialize SNMP
#
sub snmp_initialize {
    # Legal SNMP v3 protocols
    my $snmp_v3_privprotocol = qr{\A des|aes|aes128|3des|3desde \z}xms;
    my $snmp_v3_authprotocol = qr{\A md5|sha \z}xms;

    # Parameters to Net::SNMP->session()
    my %param
      = (
	 '-port'     => $opt{port},
	 '-hostname' => $opt{hostname},
	 '-version'  => $opt{protocol},
	);

    # Parameters for SNMP v3
    if ($opt{protocol} == 3) {

	# Username is mandatory
	if (defined $opt{username}) {
	    $param{'-username'} = $opt{username};
	}
	else {
	    print "SNMP ERROR: With SNMPv3 the username must be specified\n";
	    exit $E_UNKNOWN;
	}

	# Authpassword is optional
	if (defined $opt{authpassword}) {
	    $param{'-authpassword'} = $opt{authpassword};
	}

	# Authkey is optional
	if (defined $opt{authkey}) {
	    $param{'-authkey'} = $opt{authkey};
	}

	# Privpassword is optional
	if (defined $opt{privpassword}) {
	    $param{'-privpassword'} = $opt{privpassword};
	}

	# Privkey is optional
	if (defined $opt{privkey}) {
	    $param{'-privkey'} = $opt{privkey};
	}

	# Privprotocol is optional
	if (defined $opt{privprotocol}) {
	    if ($opt{privprotocol} =~ m/$snmp_v3_privprotocol/xms) {
		$param{'-privprotocol'} = $opt{privprotocol};
	    }
	    else {
		print "SNMP ERROR: Unknown privprotocol '$opt{privprotocol}', "
		  . "must be one of [des|aes|aes128|3des|3desde]\n";
		exit $E_UNKNOWN;
	    }
	}

	# Authprotocol is optional
	if (defined $opt{authprotocol}) {
	    if ($opt{authprotocol} =~ m/$snmp_v3_authprotocol/xms) {
		$param{'-authprotocol'} = $opt{authprotocol};
	    }
	    else {
		print "SNMP ERROR: Unknown authprotocol '$opt{authprotocol}', "
		  . "must be one of [md5|sha]\n";
		exit $E_UNKNOWN;
	    }
	}
    }
    # Parameters for SNMP v2c or v1
    elsif ($opt{protocol} == 2 or $opt{protocol} == 1) {
	$param{'-community'} = $opt{community};
    }
    else {
	print "SNMP ERROR: Unknown SNMP version '$opt{protocol}'\n";
	exit $E_UNKNOWN;
    }

    # Try to initialize the SNMP session
    if ( eval { require Net::SNMP; 1 } ) {
	($snmp_session, $snmp_error) = Net::SNMP->session( %param );
	if (!defined $snmp_session) {
	    printf "SNMP: %s\n", $snmp_error;
	    exit $E_UNKNOWN;
	}
    }
    else {
	print "You need perl module Net::SNMP to run $NAME in SNMP mode\n";
	exit $E_UNKNOWN;
    }
    return;
}

#
# Checking if SNMP works by probing for "chassisModelName", which all
# servers should have
#
sub snmp_check {
    my $chassisModelName = '1.3.6.1.4.1.674.10892.1.300.10.1.9.1';
    my $result = $snmp_session->get_request(-varbindlist => [$chassisModelName]);

    # Typically if remote host isn't responding
    if (!defined $result) {
	printf "SNMP CRITICAL: %s\n", $snmp_session->error;
	exit $E_CRITICAL;
    }

    # If OpenManage isn't installed or is not working
    if ($result->{$chassisModelName} =~ m{\A noSuch (Instance|Object) \z}xms) {
	print "ERROR: (SNMP) OpenManage is not installed or is not working correctly\n";
	exit $E_UNKNOWN;
    }
    return;
}

#
# Detecting blade via SNMP
#
sub snmp_detect_blade {
    my $DellBaseBoardType = '1.3.6.1.4.1.674.10892.1.300.80.1.7.1.1';
    my $result = $snmp_session->get_request(-varbindlist => [$DellBaseBoardType]);

    # Identify blade. Older models (4th and 5th gen models) and/or old
    # OMSA (4.x) don't have this OID. If we get "noSuchInstance" or
    # similar, we assume that this isn't a blade
    if ($result->{$DellBaseBoardType} eq '3') {
	$blade = 1;
    }
    return;
}

#
# Locate the omreport binary
#
sub find_omreport {
    # Possible full paths for omreport
    my @omreport_paths
      = (
	 '/usr/bin/omreport',                            # default on Linux
	 '/opt/dell/srvadmin/oma/bin/omreport.sh',       # alternate on Linux
	 '/opt/dell/srvadmin/oma/bin/omreport',          # alternate on Linux
	 'c:\progra~1\dell\sysmgt\oma\bin\omreport.exe', # default on Windows
	 'c:\progra~2\dell\sysmgt\oma\bin\omreport.exe', # default on Windows x64
	);

    # If user has specified path to omreport
    if (defined $opt{omreport} and -x $opt{omreport}) {
	$omreport = $opt{omreport};
	return;
    }

    # Find the one to use
  OMREPORT_PATH:
    foreach my $bin (@omreport_paths) {
	if (-x $bin) {
	    $omreport = $bin;
	    last OMREPORT_PATH;
	}
    }

    # Exit with status=UNKNOWN if OM is not installed, or we don't
    # have permission to execute the binary
    if (!defined $omreport) {
	print "ERROR: Dell OpenManage Server Administrator (OMSA) is not installed\n";
	exit $E_UNKNOWN;
    }
    return;
}

#
# Checks output from 'omreport -?' and searches for arguments to
# omreport, to accommodate deprecated options "chassis" and "system"
# (on newer hardware), as well as blade servers.
#
sub check_omreport_options {
    foreach (@{ run_command("$omreport -? 2>&1") }) {
       if (m/\A servermodule /xms) {
	   # If "servermodule" argument to omreport exists, use it
	   # instead of argument "system"
           $omopt_system = 'servermodule';
       }
       elsif (m/\A mainsystem /xms) {
	   # If "mainsystem" argument to omreport exists, use it
	   # instead of argument "chassis"
           $omopt_chassis = 'mainsystem';
       }
       elsif (m/\A modularenclosure /xms) {
	   # If "modularenclusure" argument to omreport exists, assume
	   # that this is a blade
           $blade = 1;
       }
    }
    return;
}

#
# Read the blacklist option and return a hash containing the
# blacklisted components
#
sub get_blacklist {
    my @bl = ();
    my %blacklist = ();

    if (scalar @{ $opt{blacklist} } >= 0) {
	foreach my $black (@{ $opt{blacklist} }) {
	    my $tmp = q{};
	    if (-f $black) {
		open my $BL, '<', $black
		  or do { report('other', "Couldn't open blacklist file $black: $!", $E_UNKNOWN)
			    and return {} };
		$tmp = <$BL>;
		close $BL;
		chomp $tmp;
	    }
	    else {
		$tmp = $black;
	    }
	    push @bl, $tmp;
	}
    }

    return {} if $#bl < 0;

    # Parse blacklist string, put in hash
    foreach my $black (@bl) {
	my @comps = split m{/}xms, $black;
	foreach my $c (@comps) {
	    next if $c !~ m/=/xms;
	    my ($key, $val) = split /=/xms, $c;
	    my @vals = split /,/xms, $val;
	    $blacklist{$key} = \@vals;
	}
    }

    return \%blacklist;
}

#
# Read the check option and adjust the hash %check, which is a rough
# list of components to be checked
#
sub adjust_checks {
    my @cl = ();

    # Adjust checking based on the '--all' option
    if ($opt{all}) {
	# Check option usage
	if (defined $opt{only} and $opt{only} !~ m{\A critical|warning \z}xms) {
	    print qq{ERROR: Wrong simultaneous usage of the "--all" and "--only" options\n};
	    exit $E_UNKNOWN;
	}
	if (scalar @{ $opt{check} } > 0) {
	    print qq{ERROR: Wrong simultaneous usage of the "--all" and "--check" options\n};
	    exit $E_UNKNOWN;
	}

	# set the check hash to check everything
	map { $_ = 1 } values %check;

	return;
    }

    # Adjust checking based on the '--only' option
    if (defined $opt{only} and $opt{only} !~ m{\A critical|warning \z}xms) {
	# Check option usage
	if (scalar @{ $opt{check} } > 0) {
	    print qq{ERROR: Wrong simultaneous usage of the "--only" and "--check" options\n};
	    exit $E_UNKNOWN;
	}
	if (! exists $check{$opt{only}} and $opt{only} ne 'chassis') {
	    print qq{ERROR: "$opt{only}" is not a known keyword for the "--only" option\n};
	    exit $E_UNKNOWN;
	}

	# reset the check hash
	map { $_ = 0 } values %check;

	# adjust the check hash
	if ($opt{only} eq 'chassis') {
	    map { $check{$_} = 1 } qw(memory fans power temp cpu voltage
				      batteries amperage intrusion esmhealth);
	}
	else {
	    $check{$opt{only}} = 1;
	}

	return;
    }

    # Adjust checking based on the '--check' option
    if (scalar @{ $opt{check} } >= 0) {
	foreach my $check (@{ $opt{check} }) {
	    my $tmp = q{};
	    if (-f $check) {
		open my $CL, '<', $check
		  or do { report('other', "Couldn't open check file $check: $!", $E_UNKNOWN) and return };
		$tmp = <$CL>;
		close $CL;
	    }
	    else {
		$tmp = $check;
	    }
	    push @cl, $tmp;
	}
    }

    return if $#cl < 0;

    # Parse checklist string, put in hash
    foreach my $check (@cl) {
	my @checks = split /,/xms, $check;
	foreach my $c (@checks) {
	    next if $c !~ m/=/xms;
	    my ($key, $val) = split /=/xms, $c;
	    $check{$key} = $val;
	}
    }

    # Check if we should check global health status
  CHECK_KEY:
    foreach (keys %check) {
	next CHECK_KEY if $_ eq 'esmlog';   # not part of global status
	next CHECK_KEY if $_ eq 'alertlog'; # not part of global status

	if ($check{$_} == 0) { # found something with checking turned off
	    $global = 0;
	    last CHECK_KEY;
	}
    }

    return;
}

#
# Runs omreport and returns an array of anonymous hashes containing
# the output.
# Takes one argument: string containing parameters to omreport
#
sub run_omreport {
    my $command = shift;
    my @output  = ();
    my @keys    = ();

    # Errors that are OK. Some low-end poweredge (and blades) models
    # don't have RAID controllers, intrusion detection sensor, or
    # redundant/instrumented power supplies etc.
    my $ok_errors
      = qr{
            Intrusion\sinformation\sis\snot\sfound\sfor\sthis\ssystem  # No intrusion probe
          | No\sinstrumented\spower\ssupplies\sfound\son\sthis\ssystem # No instrumented PS (blades/low-end)
          | No\scontrollers\sfound                                     # No RAID controller
          | No\sbattery\sprobes\sfound\son\sthis\ssystem               # No battery probes
          | Invalid\scommand:\spwrmonitoring                           # Older OMSAs lack this command(?)
        }xms;

    # Errors that are OK on blade servers
    my $ok_blade_errors
      = qr{
              No\sfan\sprobes\sfound\son\sthis\ssystem   # No fan probes
      }xms;

    # Run omreport and fetch output
    my $rawtext = slurp_command("$omreport $command -fmt ssv 2>&1");
    return [] if !defined $rawtext;

    # Workaround for Openmanage BUG introduced in OMSA 5.5.0
    $rawtext =~ s/\n;/;/gxms if $command eq 'storage controller';

    # Parse output, store in array
    for ((split /\n/xms, $rawtext)) {
	if (m/\A Error/xms) {
	    next if m{$ok_errors}xms;
	    next if ($blade and m{$ok_blade_errors}xms);
	    report('other', "Problem running 'omreport $command': $_", $E_UNKNOWN);
	}

	next if !m/(.*?;){2}/xms;  # ignore lines with less than 3 fields
	my @vals = split /;/xms;
	if ($vals[0] =~ m/\A (Index|ID|Severity) \z/xms) {
	    @keys = @vals;
	}
	else {
	    my $i = 0;
	    push @output, { map { $_ => $vals[$i++] } @keys };
	}

    }

    # Finally, return the collected information
    return \@output;
}


#
# Checks if a component is blacklisted. Returns 1 if the component is
# blacklisted, 0 otherwise. Takes two arguments:
#   arg1: component name
#   arg2: component id or index
#
sub blacklisted {
    my $name = shift;  # component name
    my $id   = shift;  # component id
    my $ret  = 0;      # return value

    if (defined $blacklist{$name}) {
	foreach my $comp (@{ $blacklist{$name} }) {
	    if (defined $id and $comp eq $id) {
		$ret = 1;
	    }
	}
    }

    return $ret;
}

# Converts the NexusID from SNMP to our version
sub convert_nexus {
    my $nexus = shift;
    $nexus =~ s{\A \\}{}xms;
    $nexus =~ s{\\}{:}gxms;
    return $nexus;
}

# Sets custom temperature thresholds based on user supplied options
sub custom_temperature_thresholds {
    my $type   = shift; # type of threshold, either w (warning) or c (critical)
    my %thres  = ();    # will contain the thresholds
    my @limits = ();    # holds the input

    my @opt =  $type eq 'w' ? @{ $opt{warning} } : @{ $opt{critical} };

    if (scalar @opt >= 0) {
	foreach my $t (@opt) {
	    my $tmp = q{};
	    if (-f $t) {
		open my $F, '<', $t
		  or do { report('other', "Couldn't open temperature threshold file $t: $!",
				 $E_UNKNOWN) and return {} };
		$tmp = <$F>;
		close $F;
	    }
	    else {
		$tmp = $t;
	    }
	    push @limits, $tmp;
	}
    }

    # Parse checklist string, put in hash
    foreach my $th (@limits) {
	my @tmp = split m{,}xms, $th;
	foreach my $t (@tmp) {
	    next if $t !~ m{=}xms;
	    my ($key, $val) = split m{=}xms, $t;
	    if ($val =~ m{/}xms) {
		my ($max, $min) = split m{/}xms, $val;
		$thres{$key}{max} = $max;
		$thres{$key}{min} = $min;
	    }
	    else {
		$thres{$key}{max} = $val;
	    }
	}
    }

    return \%thres;
}


# Gets the output from SNMP result according to the OIDs checked
sub get_snmp_output {
    my ($result,$oidref) = @_;
    my @output = ();

    foreach my $oid (keys %{ $result }) {
	my @dummy = split /\./xms, $oid;
	my $id = pop @dummy;
	--$id;
	my $foo = join q{.}, @dummy;
	if (exists $oidref->{$foo}) {
	    $output[$id]{$oidref->{$foo}} = $result->{$oid};
	}
    }
    return \@output;
}


# Map the controller or other item in-place
sub map_item {
    my ($key, $val, $list)  = @_;

    foreach my $lst (@{ $list }) {
	if (!exists $lst->{$key}) {
	    $lst->{$key} = $val;
	}
    }
    return;
}

# Return the URL for official Dell documentation for a specific
# PowerEdge server
sub documentation_url {
    my $model = shift;

    # create model short form, e.g. "r710"
    $model =~ s{\A PowerEdge \s (.+?) \z}{lc($1)}exms;

    # special case for blades (e.g. M600, M710), they have common
    # documentation
    $model =~ s{\A m\d+ \z}{m}xms;

    return 'http://support.dell.com/support/edocs/systems/pe' . $model . '/';
}

# Return the URL for warranty information for a server with a given
# serial number (servicetag)
sub warranty_url {
    my $tag = shift;

    # Dell support sites for different parts of the world
    my %supportsite
      = (
	 'emea' => 'http://support.euro.dell.com/support/topics/topic.aspx/emea/shared/support/my_systems_info/',
	 'ap'   => 'http://supportapj.dell.com/support/topics/topic.aspx/ap/shared/support/my_systems_info/en/details?',
	 'glob' => 'http://support.dell.com/support/topics/global.aspx/support/my_systems_info/details?',
	);

    # warranty URLs for different country codes
    my %url
      = (
	 # EMEA
	 'at' => $supportsite{emea} . 'de/details?c=at&l=de&ServiceTag=',  # Austria
	 'be' => $supportsite{emea} . 'nl/details?c=be&l=nl&ServiceTag=',  # Belgium
	 'cz' => $supportsite{emea} . 'cs/details?c=cz&l=cs&ServiceTag=',  # Czech Republic
	 'de' => $supportsite{emea} . 'de/details?c=de&l=de&ServiceTag=',  # Germany
	 'dk' => $supportsite{emea} . 'da/details?c=dk&l=da&ServiceTag=',  # Denmark
	 'es' => $supportsite{emea} . 'es/details?c=es&l=es&ServiceTag=',  # Spain
	 'fi' => $supportsite{emea} . 'fi/details?c=fi&l=fi&ServiceTag=',  # Finland
	 'fr' => $supportsite{emea} . 'fr/details?c=fr&l=fr&ServiceTag=',  # France
	 'gr' => $supportsite{emea} . 'en/details?c=gr&l=el&ServiceTag=',  # Greece
	 'it' => $supportsite{emea} . 'it/details?c=it&l=it&ServiceTag=',  # Italy
	 'il' => $supportsite{emea} . 'en/details?c=il&l=en&ServiceTag=',  # Israel
	 'me' => $supportsite{emea} . 'en/details?c=me&l=en&ServiceTag=',  # Middle East
	 'no' => $supportsite{emea} . 'no/details?c=no&l=no&ServiceTag=',  # Norway
	 'nl' => $supportsite{emea} . 'nl/details?c=nl&l=nl&ServiceTag=',  # The Netherlands
	 'pl' => $supportsite{emea} . 'pl/details?c=pl&l=pl&ServiceTag=',  # Poland
	 'pt' => $supportsite{emea} . 'en/details?c=pt&l=pt&ServiceTag=',  # Portugal
	 'ru' => $supportsite{emea} . 'ru/details?c=ru&l=ru&ServiceTag=',  # Russia
	 'se' => $supportsite{emea} . 'sv/details?c=se&l=sv&ServiceTag=',  # Sweden
	 'uk' => $supportsite{emea} . 'en/details?c=uk&l=en&ServiceTag=',  # United Kingdom
	 'za' => $supportsite{emea} . 'en/details?c=za&l=en&ServiceTag=',  # South Africa
	 # America
	 'br' => $supportsite{glob} . 'c=br&l=pt&ServiceTag=',  # Brazil
	 'ca' => $supportsite{glob} . 'c=ca&l=en&ServiceTag=',  # Canada
	 'mx' => $supportsite{glob} . 'c=mx&l=es&ServiceTag=',  # Mexico
	 'us' => $supportsite{glob} . 'c=us&l=en&ServiceTag=',  # USA
	 # Asia/Pacific
	 'au' => $supportsite{ap} . 'c=au&l=en&ServiceTag=',  # Australia
	 'cn' => $supportsite{ap} . 'c=cn&l=zh&ServiceTag=',  # China
	 'in' => $supportsite{ap} . 'c=in&l=en&ServiceTag=',  # India
	 # default fallback
	 'XX' => $supportsite{glob} . 'ServiceTag=',  # default
	);

    if (exists $url{$opt{htmlinfo}}) {
	return $url{$opt{htmlinfo}} . $tag;
    }
    else {
	return $url{XX} . $tag;
    }
}



#---------------------------------------------------------------------
# Check functions
#---------------------------------------------------------------------

#-----------------------------------------
# Check global health status
#-----------------------------------------
sub check_global {
    my $health = $E_OK;

    if ($snmp) {
	#
	# Checks global status, i.e. both storage and chassis
	#
	my $systemStateGlobalSystemStatus = '1.3.6.1.4.1.674.10892.1.200.10.1.2.1';
	my $result = $snmp_session->get_request(-varbindlist => [$systemStateGlobalSystemStatus]);
	if (!defined $result) {
	    printf "SNMP ERROR [global]: %s\n", $snmp_error;
	    exit $E_UNKNOWN;
	}
	$health = $status2nagios{$snmp_status{$result->{$systemStateGlobalSystemStatus}}};
    }
    else {
	#
	# NB! This does not check storage, only chassis...
	#
	foreach (@{ run_command("$omreport $omopt_system -fmt ssv") }) {
	    next if !m/;/xms;
	    next if m/\A SEVERITY;COMPONENT/xms;
	    if (m/\A (.+?);Main\sSystem(\sChassis)? /xms) {
		$health = $status2nagios{$1};
		last;
	    }
	}
    }

    # Return the status
    return $health;
}


#-----------------------------------------
# STORAGE: Check controllers
#-----------------------------------------
sub check_controllers {
    my $id       = undef;
    my $nexus    = undef;
    my $name     = undef;
    my $state    = undef;
    my $status   = undef;
    my $minfw    = undef;
    my $mindr    = undef;
    my $firmware = undef;
    my $driver   = undef;
    my @output   = ();

    if ($snmp) {
	my %ctrl_oid
	  = (
	     '1.3.6.1.4.1.674.10893.1.20.130.1.1.1'  => 'controllerNumber',
	     '1.3.6.1.4.1.674.10893.1.20.130.1.1.2'  => 'controllerName',
	     '1.3.6.1.4.1.674.10893.1.20.130.1.1.5'  => 'controllerState',
	     '1.3.6.1.4.1.674.10893.1.20.130.1.1.8'  => 'controllerFWVersion',
	     '1.3.6.1.4.1.674.10893.1.20.130.1.1.38' => 'controllerComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.130.1.1.39' => 'controllerNexusID',
	     '1.3.6.1.4.1.674.10893.1.20.130.1.1.41' => 'controllerDriverVersion',
	     '1.3.6.1.4.1.674.10893.1.20.130.1.1.44' => 'controllerMinFWVersion',
	     '1.3.6.1.4.1.674.10893.1.20.130.1.1.45' => 'controllerMinDriverVersion',
	    );

	# We use get_table() here for the odd case where a server has
	# two or more controllers, and where some OIDs are missing on
	# one of the controllers.
	my $controllerTable = '1.3.6.1.4.1.674.10893.1.20.130.1';
	my $result = $snmp_session->get_table(-baseoid => $controllerTable);

	# No controllers is OK
	return if !defined $result;

	@output = @{ get_snmp_output($result, \%ctrl_oid) };
    }
    else {
	@output = @{ run_omreport('storage controller') };
    }

    my %ctrl_state
      = (
	 0 => 'Unknown',
	 1 => 'Ready',
	 2 => 'Failed',
	 3 => 'Online',
	 4 => 'Offline',
	 6 => 'Degraded',
	);

  CTRL:
    foreach my $out (@output) {
	if ($snmp) {
	    $id       = $out->{'controllerNumber'} - 1;
	    $name     = $out->{'controllerName'};
	    $state    = $ctrl_state{$out->{'controllerState'}};
	    $status   = $snmp_status{$out->{'controllerComponentStatus'}};
	    $minfw    = exists $out->{'controllerMinFWVersion'}
	      ? $out->{'controllerMinFWVersion'} : undef;
	    $mindr    = exists $out->{'controllerMinDriverVersion'}
	      ? $out->{'controllerMinDriverVersion'} : undef;
	    $firmware = exists $out->{controllerFWVersion}
	      ? $out->{controllerFWVersion} : 'N/A';
	    $driver   = exists $out->{controllerDriverVersion}
	      ? $out->{controllerDriverVersion} : 'N/A';
	    $nexus    = convert_nexus($out->{controllerNexusID});
	}
	else {
	    $id       = $out->{ID};
	    $name     = $out->{Name};
	    $state    = $out->{State};
	    $status   = $out->{Status};
	    $minfw    = $out->{'Minimum Required Firmware Version'} ne 'Not Applicable'
	      ? $out->{'Minimum Required Firmware Version'} : undef;
	    $mindr    = $out->{'Minimum Required Driver Version'} ne 'Not Applicable'
	      ? $out->{'Minimum Required Driver Version'} : undef;
	    $firmware = $out->{'Firmware Version'} ne 'Not Applicable'
	      ? $out->{'Firmware Version'} : 'N/A';
	    $driver   = $out->{'Driver Version'} ne 'Not Applicable'
	      ? $out->{'Driver Version'} : 'N/A';
	    $nexus    = $id;
	}

	$name =~ s{\s+\z}{}xms; # remove trailing whitespace
	push @controllers, $id;

	# Collecting some storage info
	$sysinfo{'controller'}{$id}{'id'}       = $nexus;
	$sysinfo{'controller'}{$id}{'name'}     = $name;
	$sysinfo{'controller'}{$id}{'driver'}   = $driver;
	$sysinfo{'controller'}{$id}{'firmware'} = $firmware;

	next CTRL if blacklisted('ctrl', $nexus);

	# Special case: old firmware
	if (!blacklisted('ctrl_fw', $id) && defined $minfw) {
	    chomp $firmware;
	    my $msg = sprintf q{Controller %d [%s]: Firmware '%s' is out of date},
	      $id, $name, $firmware;
	    report('storage', $msg, $E_WARNING, $nexus);
	}
	# Special case: old driver
	if (!blacklisted('ctrl_driver', $id) && defined $mindr) {
	    chomp $driver;
	    my $msg = sprintf q{Controller %d [%s]: Driver '%s' is out of date},
	      $id, $name, $driver;
	    report('storage', $msg, $E_WARNING, $nexus);
	}
	# Ok
	if ($status eq 'Ok' or ($status eq 'Non-Critical'
				and (defined $minfw or defined $mindr))) {
	    my $msg = sprintf 'Controller %d [%s] is %s',
	      $id, $name, $state;
	    report('storage', $msg, $E_OK, $nexus);
	}
        # Default
	else {
	    my $msg = sprintf 'Controller %d [%s] needs attention: %s',
	      $id, $name, $state;
	    report('storage', $msg, $status2nagios{$status}, $nexus);
	}
    }
    return;
}


#-----------------------------------------
# STORAGE: Check physical drives
#-----------------------------------------
sub check_physical_disks {
    return if $#controllers == -1;

    my $id       = undef;
    my $nexus    = undef;
    my $name     = undef;
    my $state    = undef;
    my $status   = undef;
    my $fpred    = undef;
    my $progr    = undef;
    my $ctrl     = undef;
    my $vendor   = undef;  # disk vendor
    my $product  = undef;  # product ID
    my $capacity = undef;  # disk length (size) in bytes
    my @output  = ();

    if ($snmp) {
	my %pdisk_oid
	  = (
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.1'  => 'arrayDiskNumber',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.2'  => 'arrayDiskName',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.3'  => 'arrayDiskVendor',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.4'  => 'arrayDiskState',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.6'  => 'arrayDiskProductID',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.9'  => 'arrayDiskEnclosureID',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.10' => 'arrayDiskChannel',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.11' => 'arrayDiskLengthInMB',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.15' => 'arrayDiskTargetID',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.16' => 'arrayDiskLunID',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.24' => 'arrayDiskComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.26' => 'arrayDiskNexusID',
	     '1.3.6.1.4.1.674.10893.1.20.130.4.1.31' => 'arrayDiskSmartAlertIndication',
	     '1.3.6.1.4.1.674.10893.1.20.130.5.1.5'  => 'arrayDiskEnclosureConnectionEnclosureNumber',
	     '1.3.6.1.4.1.674.10893.1.20.130.5.1.7'  => 'arrayDiskEnclosureConnectionControllerNumber',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %pdisk_oid]);

	if (!defined $result) {
	    printf "SNMP ERROR [storage / pdisk]: %s.\n", $snmp_session->error;
	    $snmp_session->close;
	    exit $E_UNKNOWN;
	}

	@output = @{ get_snmp_output($result, \%pdisk_oid) };
    }
    else {
	foreach my $c (@controllers) {
	    push @output, @{ run_omreport("storage pdisk controller=$c") };
	    map_item('ctrl', $c, \@output);
	}
    }

    my %pdisk_state
      = (
	 0  => 'Unknown',
	 1  => 'Ready',
	 2  => 'Failed',
	 3  => 'Online',
	 4  => 'Offline',
	 6  => 'Degraded',
	 7  => 'Recovering',
	 11 => 'Removed',
	 15 => 'Resynching',
	 24 => 'Rebuilding',
	 25 => 'No Media',
	 26 => 'Formatting',
	 28 => 'Diagnostics',
	 34 => 'Predictive failure',
	 35 => 'Initializing',
	 39 => 'Foreign',
	 40 => 'Clear',
	 41 => 'Unsupported',
	 53 => 'Incompatible',
	);

    # Check physical disks on each of the controllers
  PDISK:
    foreach my $out (@output) {
	if ($snmp) {
	    $name   = $out->{arrayDiskName};
	    if ($name =~ m{.*\d+:\d+:\d+\z}xms) {
		$id = join q{:}, ($out->{arrayDiskChannel}, $out->{arrayDiskEnclosureID},
				 $out->{arrayDiskTargetID});
	    }
	    else {
		$id = join q{:}, ($out->{arrayDiskChannel}, $out->{arrayDiskTargetID});
	    }
	    $state    = $pdisk_state{$out->{arrayDiskState}};
	    $status   = $snmp_status{$out->{arrayDiskComponentStatus}};
	    $fpred    = $out->{arrayDiskSmartAlertIndication} == 2 ? 1 : 0;
	    $progr    = q{};
	    $ctrl     = exists $out->{arrayDiskEnclosureConnectionControllerNumber}
	      ? $out->{arrayDiskEnclosureConnectionControllerNumber} - 1
		: -1;
	    $nexus    = convert_nexus($out->{arrayDiskNexusID});
	    $vendor   = $out->{arrayDiskVendor};
	    $product  = $out->{arrayDiskProductID};
	    $capacity = $out->{arrayDiskLengthInMB} * 1024**2;
	}
	else {
	    $id       = $out->{'ID'};
	    $name     = $out->{'Name'};
	    $state    = $out->{'State'};
	    $status   = $out->{'Status'};
	    $fpred    = lc($out->{'Failure Predicted'}) eq 'yes' ? 1 : 0;
	    $progr    = ' [' . $out->{'Progress'} . ']';
	    $ctrl     = $out->{'ctrl'};
	    $nexus    = join q{:}, $out->{ctrl}, $id;
	    $vendor   = $out->{'Vendor ID'};
	    $product  = $out->{'Product ID'};
	    $capacity = $out->{'Capacity'};
	    $capacity =~ s{\A .*? \((\d+) \s bytes\) \z}{$1}xms;
	}

	next PDISK if blacklisted('pdisk', $nexus);
	$count{pdisk}++;

        $vendor  =~ s{\s+\z}{}xms; # remove trailing whitespace
        $product =~ s{\s+\z}{}xms; # remove trailing whitespace

	# Calculate human readable capacity
	$capacity = ceil($capacity / 1000**3) >= 1000
          ? sprintf '%.1fTB', ($capacity / 1000**4)
	    : sprintf '%.0fGB', ($capacity / 1000**3);
	$capacity = '450GB' if $capacity eq '449GB';  # quick fix for 450GB disks
	$capacity = '146GB' if $capacity eq '147GB';  # quick fix for 146GB disks
	$capacity = '300GB' if $capacity eq '299GB';  # quick fix for 146GB disks

	# Capitalize only the first letter of the vendor name
	$vendor = (substr $vendor, 0, 1) . lc (substr $vendor, 1, length $vendor);

	# Remove unnecessary trademark rubbish from vendor name
	$vendor =~ s{\(tm\)\z}{}xms;

	# Special case: Failure predicted
	if ($status eq 'Non-Critical' and $fpred) {
	    my $msg = sprintf '%s [%s %s, %s] on ctrl %d needs attention: Failure Predicted',
	      $name, $vendor, $product, $capacity, $ctrl;
	    report('storage', $msg, $E_WARNING, $nexus);
	}
	# Special case: Rebuilding
	elsif ($state eq 'Rebuilding') {
	    my $msg = sprintf '%s [%s] on ctrl %d is %s%s',
	      $name, $capacity, $ctrl, $state, $progr;
	    report('storage', $msg, $E_WARNING, $nexus);
	}
	# Default
	elsif ($status ne 'Ok') {
	    my $msg =  sprintf '%s [%s %s, %s] on ctrl %d needs attention: %s',
	      $name, $vendor, $product, $capacity, $ctrl, $state;
	    report('storage', $msg, $status2nagios{$status}, $nexus);
	}
	# Ok
	else {
	    my $msg = sprintf '%s [%s] on ctrl %d is %s',
	      $name, $capacity, $ctrl, $state;
	    report('storage', $msg, $E_OK, $nexus);
	}
    }
    return;
}


#-----------------------------------------
# STORAGE: Check logical drives
#-----------------------------------------
sub check_virtual_disks {
    return if $#controllers == -1;

    my $id     = undef;
    my $name   = undef;
    my $nexus  = undef;
    my $dev    = undef;
    my $state  = undef;
    my $status = undef;
    my $layout = undef;
    my $size   = undef;
    my $progr  = undef;
    my $ctrl   = undef;
    my @output = ();

    if ($snmp) {
	my %vdisk_oid
	  = (
	     '1.3.6.1.4.1.674.10893.1.20.140.1.1.3'  => 'virtualDiskDeviceName',
	     '1.3.6.1.4.1.674.10893.1.20.140.1.1.4'  => 'virtualDiskState',
	     '1.3.6.1.4.1.674.10893.1.20.140.1.1.6'  => 'virtualDiskLengthInMB',
	     '1.3.6.1.4.1.674.10893.1.20.140.1.1.13' => 'virtualDiskLayout',
	     '1.3.6.1.4.1.674.10893.1.20.140.1.1.17' => 'virtualDiskTargetID',
	     '1.3.6.1.4.1.674.10893.1.20.140.1.1.20' => 'virtualDiskComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.140.1.1.21' => 'virtualDiskNexusID',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %vdisk_oid]);

	# No logical drives is OK
	return if !defined $result;

	@output = @{ get_snmp_output($result, \%vdisk_oid) };
    }
    else {
	foreach my $c (@controllers) {
	    push @output, @{ run_omreport("storage vdisk controller=$c") };
	    map_item('ctrl', $c, \@output);
	}
    }

    my %vdisk_state
      = (
	 0  => 'Unknown',
	 1  => 'Ready',
	 2  => 'Failed',
	 3  => 'Online',
	 4  => 'Offline',
	 6  => 'Degraded',
	 15 => 'Resynching',
	 16 => 'Regenerating',
	 24 => 'Rebuilding',
	 26 => 'Formatting',
	 32 => 'Reconstructing',
	 35 => 'Initializing',
	 36 => 'Background Initialization',
	 38 => 'Resynching Paused',
	 52 => 'Permanently Degraded',
	 54 => 'Degraded Redundancy',
	);

    my %vdisk_layout
      = (
	 1  => 'Concatenated',
	 2  => 'RAID-0',
	 3  => 'RAID-1',
	 7  => 'RAID-5',
	 8  => 'RAID-6',
	 10 => 'RAID-10',
	 12 => 'RAID-50',
	 19 => 'Concatenated RAID 1',
	 24 => 'RAID-60',
	);

    # Check virtual disks on each of the controllers
  VDISK:
    foreach my $out (@output) {
	if ($snmp) {
	    $id     = $out->{virtualDiskTargetID};
	    $dev    = $out->{virtualDiskDeviceName};
	    $state  = $vdisk_state{$out->{virtualDiskState}};
	    $status = $snmp_status{$out->{virtualDiskComponentStatus}};
	    $layout = $vdisk_layout{$out->{virtualDiskLayout}};
	    $size   = sprintf '%.2f GB', $out->{virtualDiskLengthInMB} / 1024;
	    $progr  = q{};  # can't get this from SNMP(?)
	    $nexus  = convert_nexus($out->{virtualDiskNexusID});
	    $ctrl   = $nexus;  # We use the nexus id to get the controller id
	    $ctrl   =~ s{\A (\d+):\d+ \z}{$1}xms;
	}
	else {
	    $id     = $out->{ID};
	    $dev    = $out->{'Device Name'};
	    $state  = $out->{State};
	    $status = $out->{Status};
	    $layout = $out->{Layout};
	    $size   = $out->{Size};
	    $progr  = ' [' . $out->{Progress} . ']';
	    $size   =~ s{\A (.*GB).* \z}{$1}xms;
	    $nexus  = join q{:}, $out->{ctrl}, $id;
	    $ctrl   = $out->{ctrl};
	}

	next VDISK if blacklisted('vdisk', $nexus);
	$count{vdisk}++;

	# Special case: Regenerating
	if ($state eq 'Regenerating') {
	    my $msg = sprintf q{Logical drive %d '%s' [%s, %s] on ctrl %d is %s%s},
	      $id, $dev, $layout, $size, $ctrl, $state, $progr;
	    report('storage', $msg, $E_WARNING, $nexus);
	}
	# Default
	elsif ($status ne 'Ok') {
	    my $msg = sprintf q{Logical drive %d '%s' [%s, %s] on ctrl %d needs attention: %s},
	      $id, $dev, $layout, $size, $ctrl, $state;
	    report('storage', $msg, $status2nagios{$status}, $nexus);
	}
	# Ok
	else {
	    my $msg = sprintf q{Logical drive %d '%s' [%s, %s] on ctrl %d is %s},
	      $id, $dev, $layout, $size, $ctrl, $state;
	    report('storage', $msg, $E_OK, $nexus);
	}
    }
    return;
}


#-----------------------------------------
# STORAGE: Check cache batteries
#-----------------------------------------
sub check_cache_battery {
    return if $#controllers == -1;

    my $id     = undef;
    my $nexus  = undef;
    my $state  = undef;
    my $status = undef;
    my $ctrl   = undef;
    my $learn  = undef; # learn state
    my $pred   = undef; # battery's ability to be charged
    my @output = ();

    if ($snmp) {
	my %bat_oid
	  = (
	     '1.3.6.1.4.1.674.10893.1.20.130.15.1.4'  => 'batteryState',
	     '1.3.6.1.4.1.674.10893.1.20.130.15.1.6'  => 'batteryComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.130.15.1.9'  => 'batteryNexusID',
	     '1.3.6.1.4.1.674.10893.1.20.130.15.1.10' => 'batteryPredictedCapacity',
	     '1.3.6.1.4.1.674.10893.1.20.130.15.1.12' => 'batteryLearnState',
	     '1.3.6.1.4.1.674.10893.1.20.130.16.1.5'  => 'batteryConnectionControllerNumber',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %bat_oid]);

	# No cache battery is OK
	return if !defined $result;

	@output = @{ get_snmp_output($result, \%bat_oid) };
    }
    else {
	foreach my $c (@controllers) {
	    push @output, @{ run_omreport("storage battery controller=$c") };
	    map_item('ctrl', $c, \@output);
	}
    }

    my %bat_state
      = (
	 0  => 'Unknown',
	 1  => 'Ready',
	 2  => 'Failed',
	 6  => 'Degraded',
	 7  => 'Reconditioning',
	 9  => 'High',
	 10 => 'Power Low',
	 12 => 'Charging',
	 21 => 'Missing',
	 36 => 'Learning',
	);

    my %bat_learn_state
      = (
	 1  => 'Failed',
	 2  => 'Active',
	 4  => 'Timed out',
	 8  => 'Requested',
	 16 => 'Idle',
	);

    my %bat_pred_cap
      = (
	 1 => 'Failed',  # The battery cannot be charged and needs to be replaced
	 2 => 'Ready',   # The battery can be charged to full capacity
	 4 => 'Unknown', # The battery is completing a Learn cycle. The charge capacity of the
                         # battery cannot be determined until the Learn cycle is complete
	);

    # Check battery on each of the controllers
  BATTERY:
    foreach my $out (@output) {
	if ($snmp) {
	    $state  = $bat_state{$out->{batteryState}};
	    $status = $snmp_status{$out->{batteryComponentStatus}};
	    $learn  = exists $out->{batteryLearnState}
	      ? $bat_learn_state{$out->{batteryLearnState}} : undef;
	    $pred   = exists $out->{batteryPredictedCapacity}
	      ? $bat_pred_cap{$out->{batteryPredictedCapacity}} : undef;
	    $ctrl   = $out->{batteryConnectionControllerNumber} - 1;
	    $nexus  = convert_nexus($out->{batteryNexusID});
	    $id     = $nexus;
	    $id     =~ s{\A \d+:(\d+) \z}{$1}xms;
	}
	else {
	    $id     = $out->{'ID'};
	    $state  = $out->{'State'};
	    $status = $out->{'Status'};
	    $learn  = $out->{'Learn State'};
	    $pred   = $out->{'Predicted Capacity Status'};
	    $ctrl   = $out->{'ctrl'};
	    $nexus  = join q{:}, $out->{ctrl}, $id;
	}

	next BATTERY if blacklisted('bat', $nexus);

	# Special case: Charging
	if ($state eq 'Charging') {
	    my $msg = sprintf 'Cache battery %d in controller %d is %s (%s) [probably harmless]',
	      $id, $ctrl, $state, $pred;
	    report('storage', $msg, $E_WARNING, $nexus);
	}
	# Special case: Learning (battery learns its capacity)
	elsif ($state eq 'Learning') {
	    my $msg = sprintf 'Cache battery %d in controller %d is %s (%s) [probably harmless]',
	      $id, $ctrl, $state, $learn;
	    report('storage', $msg, $E_WARNING, $nexus);
	}
	# Special case: Power Low (first part of recharge cycle)
	elsif ($state eq 'Power Low') {
	    my $msg = sprintf 'Cache battery %d in controller %d is %s [probably harmless]',
	      $id, $ctrl, $state;
	    report('storage', $msg, $E_WARNING, $nexus);
	}
	# Default
	elsif ($status ne 'Ok') {
	    my $msg = sprintf 'Cache battery %d in controller %d needs attention: %s (%s)',
	      $id, $ctrl, $state, $status;
	    report('storage', $msg, $status2nagios{$status}, $nexus);
	}
	# Ok
	else {
	    my $msg = sprintf 'Cache battery %d in controller %d is %s',
	      $id, $ctrl, $state;
	    report('storage', $msg, $E_OK, $nexus);
	}
    }
    return;
}


#-----------------------------------------
# STORAGE: Check connectors (channels)
#-----------------------------------------
sub check_connectors {
    return if $#controllers == -1;

    my $id     = undef;
    my $nexus  = undef;
    my $name   = undef;
    my $state  = undef;
    my $status = undef;
    my $type   = undef;
    my $ctrl   = undef;
    my @output = ();

    if ($snmp) {
        my %conn_oid
          = (
             '1.3.6.1.4.1.674.10893.1.20.130.2.1.1'  => 'channelNumber',
             '1.3.6.1.4.1.674.10893.1.20.130.2.1.2'  => 'channelName',
             '1.3.6.1.4.1.674.10893.1.20.130.2.1.3'  => 'channelState',
             '1.3.6.1.4.1.674.10893.1.20.130.2.1.8'  => 'channelComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.130.2.1.9'  => 'channelNexusID',
             '1.3.6.1.4.1.674.10893.1.20.130.2.1.11' => 'channelBusType',
            );
        my $result = $snmp_session->get_entries(-columns => [keys %conn_oid]);

        if (!defined $result) {
            printf "SNMP ERROR [storage / channel]: %s.\n", $snmp_session->error;
            $snmp_session->close;
            exit $E_UNKNOWN;
        }

	@output = @{ get_snmp_output($result, \%conn_oid) };
    }
    else {
        foreach my $c (@controllers) {
            push @output, @{ run_omreport("storage connector controller=$c") };
	    map_item('ctrl', $c, \@output);
        }
    }

    my %conn_state
      = (
         0 => 'Unknown',
         1 => 'Ready',
         2 => 'Failed',
         3 => 'Online',
         4 => 'Offline',
         6 => 'Degraded',
        );

    my %conn_bustype
      = (
         1 => 'SCSI',
         2 => 'IDE',
         3 => 'Fibre Channel',
         4 => 'SSA',
         6 => 'USB',
         7 => 'SATA',
         8 => 'SAS',
        );

    # Check connectors on each of the controllers
  CHANNEL:
    foreach my $out (@output) {
        if ($snmp) {
            $id     = $out->{channelNumber} - 1;
            $name   = $out->{channelName};
            $state  = $conn_state{$out->{channelState}};
            $status = $snmp_status{$out->{channelComponentStatus}};
            $type   = $conn_bustype{$out->{channelBusType}};
	    $nexus  = convert_nexus($out->{channelNexusID});
	    $ctrl   = $nexus;
	    $ctrl   =~ s{(\d+):\d+}{$1}xms;
        }
        else {
            $id     = $out->{'ID'};
            $name   = $out->{'Name'};
            $state  = $out->{'State'};
            $status = $out->{'Status'};
            $type   = $out->{'Connector Type'};
	    $ctrl   = $out->{ctrl};
	    $nexus  = join q{:}, $out->{ctrl}, $id;
        }

        next CHANNEL if blacklisted('conn', $nexus);

	my $msg = sprintf '%s [%s] on controller %d is %s',
	  $name, $type, $ctrl, $state;
        report('storage', $msg, $status2nagios{$status}, $nexus);
    }
    return;
}


#-----------------------------------------
# STORAGE: Check enclosures
#-----------------------------------------
sub check_enclosures {
    my $id       = undef;
    my $nexus    = undef;
    my $name     = undef;
    my $state    = undef;
    my $status   = undef;
    my $firmware = undef;
    my $ctrl     = undef;
    my @output   = ();

    if ($snmp) {
        my %encl_oid
          = (
             '1.3.6.1.4.1.674.10893.1.20.130.3.1.1'  => 'enclosureNumber',
             '1.3.6.1.4.1.674.10893.1.20.130.3.1.2'  => 'enclosureName',
             '1.3.6.1.4.1.674.10893.1.20.130.3.1.4'  => 'enclosureState',
	     '1.3.6.1.4.1.674.10893.1.20.130.3.1.19' => 'enclosureChannelNumber',
             '1.3.6.1.4.1.674.10893.1.20.130.3.1.24' => 'enclosureComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.130.3.1.25' => 'enclosureNexusID',
	     '1.3.6.1.4.1.674.10893.1.20.130.3.1.26' => 'enclosureFirmwareVersion',
            );
        my $result = $snmp_session->get_entries(-columns => [keys %encl_oid]);

        # No enclosures is OK
        return if !defined $result;

	@output = @{ get_snmp_output($result, \%encl_oid) };
    }
    else {
	foreach my $c (@controllers) {
	    push @output, @{ run_omreport("storage enclosure controller=$c") };
	    map_item('ctrl', $c, \@output);
	}
    }

    my %encl_state
      = (
         0 => 'Unknown',
         1 => 'Ready',
         2 => 'Failed',
         3 => 'Online',
         4 => 'Offline',
         6 => 'Degraded',
        );

  ENCLOSURE:
    foreach my $out (@output) {
        if ($snmp) {
            $id       = $out->{'enclosureNumber'} - 1;
            $name     = $out->{'enclosureName'};
            $state    = $encl_state{$out->{'enclosureState'}};
            $status   = $snmp_status{$out->{'enclosureComponentStatus'}};
	    $firmware = exists $out->{enclosureFirmwareVersion}
	      ? $out->{enclosureFirmwareVersion} : 'N/A';
	    $nexus    = convert_nexus($out->{enclosureNexusID});
	    $ctrl     = $nexus;
	    $ctrl     =~ s{\A (\d+):.* \z}{$1}xms;
        }
        else {
            $id       = $out->{ID};
            $name     = $out->{Name};
            $state    = $out->{State};
            $status   = $out->{Status};
	    $firmware = $out->{'Firmware Version'} ne 'Not Applicable'
	      ? $out->{'Firmware Version'} : 'N/A';
	    $nexus    = join q{:}, $out->{ctrl}, $id;
	    $ctrl     = $out->{ctrl};
        }

        $name     =~ s{\s+\z}{}xms; # remove trailing whitespace
        $firmware =~ s{\s+\z}{}xms; # remove trailing whitespace

	# store enclosure data for future use
	push @enclosures, { 'id'    => $id,
			    'ctrl'  => $out->{ctrl},
			    'name'  => $name };

	# Collecting some storage info
	$sysinfo{'enclosure'}{$nexus}{'id'}       = $nexus;
	$sysinfo{'enclosure'}{$nexus}{'name'}     = $name;
	$sysinfo{'enclosure'}{$nexus}{'firmware'} = $firmware;

        next ENCLOSURE if blacklisted('encl', $nexus);

	my $msg = sprintf 'Enclosure %s [%s] on controller %d is %s',
	  $nexus, $name, $ctrl, $state;
        report('storage', $msg, $status2nagios{$status}, $nexus);
    }
    return;
}


#-----------------------------------------
# STORAGE: Check enclosure fans
#-----------------------------------------
sub check_enclosure_fans {
    return if $#controllers == -1;

    my $id        = undef;
    my $nexus     = undef;
    my $name      = undef;
    my $state     = undef;
    my $status    = undef;
    my $speed     = undef;
    my $encl_id   = undef;
    my $encl_name = undef;
    my @output    = ();

    if ($snmp) {
	my %fan_oid
	  = (
	     '1.3.6.1.4.1.674.10893.1.20.130.7.1.1'  => 'fanNumber',
	     '1.3.6.1.4.1.674.10893.1.20.130.7.1.2'  => 'fanName',
	     '1.3.6.1.4.1.674.10893.1.20.130.7.1.4'  => 'fanState',
	     '1.3.6.1.4.1.674.10893.1.20.130.7.1.11' => 'fanProbeCurrValue',
	     '1.3.6.1.4.1.674.10893.1.20.130.7.1.15' => 'fanComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.130.7.1.16' => 'fanNexusID',
	     '1.3.6.1.4.1.674.10893.1.20.130.8.1.4'  => 'fanConnectionEnclosureName',
	     '1.3.6.1.4.1.674.10893.1.20.130.8.1.5'  => 'fanConnectionEnclosureNumber',
	    );

	my $result = $snmp_session->get_entries(-columns => [keys %fan_oid]);

	# No enclosure fans is OK
	return if !defined $result;

	@output = @{ get_snmp_output($result, \%fan_oid) };
    }
    else {
	foreach my $enc (@enclosures) {
	    push @output, @{ run_omreport("storage enclosure controller=$enc->{ctrl} enclosure=$enc->{id} info=fans") };
	    map_item('ctrl', $enc->{ctrl}, \@output);
	    map_item('encl_id', $enc->{id}, \@output);
	    map_item('encl_name', $enc->{name}, \@output);
	}
    }

    my %fan_state
      = (
	 0  => 'Unknown',
	 1  => 'Ready',
	 2  => 'Failed',
	 3  => 'Online',
	 4  => 'Offline',
	 6  => 'Degraded',
	 21 => 'Missing',
	);

    # Check fans on each of the enclosures
  FAN:
    foreach my $out (@output) {
	if ($snmp) {
	    $id        = $out->{fanNumber} - 1;
	    $name      = $out->{fanName};
	    $state     = $fan_state{$out->{fanState}};
	    $status    = $snmp_status{$out->{fanComponentStatus}};
	    $speed     = $out->{fanProbeCurrValue};
	    $encl_id   = $out->{fanConnectionEnclosureNumber} - 1;
	    $encl_name = $out->{fanConnectionEnclosureName};
	    $nexus     = convert_nexus($out->{fanNexusID});
	}
	else {
	    $id        = $out->{'ID'};
	    $name      = $out->{'Name'};
	    $state     = $out->{'State'};
	    $status    = $out->{'Status'};
	    $speed     = $out->{'Speed'};
	    $encl_id   = join q{:}, $out->{ctrl}, $out->{'encl_id'};
	    $encl_name = $out->{encl_name};
	    $nexus     = join q{:}, $out->{ctrl}, $out->{'encl_id'}, $id;
	}

	next FAN if blacklisted('encl_fan', $nexus);

	# Default
	if ($status ne 'Ok') {
	    my $msg = sprintf '%s in enclosure %s [%s] needs attention: %s',
	      $name, $encl_id, $encl_name, $state;
	    report('storage', $msg, $status2nagios{$status}, $nexus);
	}
	# Ok
	else {
	    my $msg = sprintf '%s in enclosure %s [%s] is %s (speed=%s)',
	      $name, $encl_id, $encl_name, $state, $speed;
	    report('storage', $msg, $E_OK, $nexus);
	}
    }
    return;
}


#-----------------------------------------
# STORAGE: Check enclosure power supplies
#-----------------------------------------
sub check_enclosure_pwr {
    return if $#controllers == -1;

    my $id        = undef;
    my $nexus     = undef;
    my $name      = undef;
    my $state     = undef;
    my $status    = undef;
    my $encl_id   = undef;
    my $encl_name = undef;
    my @output    = ();

    if ($snmp) {
	my %ps_oid
	  = (
	     '1.3.6.1.4.1.674.10893.1.20.130.9.1.1'  => 'powerSupplyNumber',
	     '1.3.6.1.4.1.674.10893.1.20.130.9.1.2'  => 'powerSupplyName',
	     '1.3.6.1.4.1.674.10893.1.20.130.9.1.4'  => 'powerSupplyState',
	     '1.3.6.1.4.1.674.10893.1.20.130.9.1.9'  => 'powerSupplyComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.130.9.1.10' => 'powerSupplyNexusID',
	     '1.3.6.1.4.1.674.10893.1.20.130.10.1.4' => 'powerSupplyConnectionEnclosureName',
	     '1.3.6.1.4.1.674.10893.1.20.130.10.1.5' => 'powerSupplyConnectionEnclosureNumber',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %ps_oid]);

	# No enclosure power supplies is OK
	return if !defined $result;

	@output = @{ get_snmp_output($result, \%ps_oid) };
    }
    else {
	foreach my $enc (@enclosures) {
	    push @output, @{ run_omreport("storage enclosure controller=$enc->{ctrl} enclosure=$enc->{id} info=pwrsupplies") };
	    map_item('ctrl', $enc->{ctrl}, \@output);
	    map_item('encl_id', $enc->{id}, \@output);
	    map_item('encl_name', $enc->{name}, \@output);
	}
    }

    my %ps_state
      = (
	 0  => 'Unknown',
	 1  => 'Ready',
	 2  => 'Failed',
	 5  => 'Not Installed',
	 6  => 'Degraded',
	 11 => 'Removed',
	 21 => 'Missing',
	);

    # Check power supplies on each of the enclosures
  PS:
    foreach my $out (@output) {
	if ($snmp) {
	    $id        = $out->{powerSupplyNumber};
	    $name      = $out->{powerSupplyName};
	    $state     = $ps_state{$out->{powerSupplyState}};
	    $status    = $snmp_status{$out->{powerSupplyComponentStatus}};
	    $encl_id   = $out->{powerSupplyConnectionEnclosureNumber} - 1;
	    $encl_name = $out->{powerSupplyConnectionEnclosureName};
	    $nexus     = convert_nexus($out->{powerSupplyNexusID});
	}
	else {
	    $id        = $out->{'ID'};
	    $name      = $out->{'Name'};
	    $state     = $out->{'State'};
	    $status    = $out->{'Status'};
	    $encl_id   = join q{:}, $out->{ctrl}, $out->{'encl_id'};
	    $encl_name = $out->{encl_name};
	    $nexus     = join q{:}, $out->{ctrl}, $out->{'encl_id'}, $id;
	}

	next PS if blacklisted('encl_ps', $nexus);

	# Default
	if ($status ne 'Ok') {
	    my $msg = sprintf '%s in enclosure %s [%s] needs attention: %s',
	      $name, $encl_id, $encl_name, $state;
	    report('storage', $msg, $status2nagios{$status}, $nexus);
	}
	# Ok
	else {
	    my $msg = sprintf '%s in enclosure %s [%s] is %s',
	      $name, $encl_id, $encl_name, $state;
	    report('storage', $msg, $E_OK, $nexus);
	}
    }
    return;
}


#-----------------------------------------
# STORAGE: Check enclosure temperatures
#-----------------------------------------
sub check_enclosure_temp {
    return if $#controllers == -1;

    my $id        = undef;
    my $nexus     = undef;
    my $name      = undef;
    my $state     = undef;
    my $status    = undef;
    my $reading   = undef;
    my $unit      = undef;
    my $max_warn  = undef;
    my $max_crit  = undef;
    my $encl_id   = undef;
    my $encl_name = undef;
    my @output    = ();

    if ($snmp) {
	my %temp_oid
	  = (
	     '1.3.6.1.4.1.674.10893.1.20.130.11.1.1'  => 'temperatureProbeNumber',
	     '1.3.6.1.4.1.674.10893.1.20.130.11.1.2'  => 'temperatureProbeName',
	     '1.3.6.1.4.1.674.10893.1.20.130.11.1.4'  => 'temperatureProbeState',
	     '1.3.6.1.4.1.674.10893.1.20.130.11.1.6'  => 'temperatureProbeUnit',
	     '1.3.6.1.4.1.674.10893.1.20.130.11.1.9'  => 'temperatureProbeMaxWarning',
	     '1.3.6.1.4.1.674.10893.1.20.130.11.1.10' => 'temperatureProbeMaxCritical',
	     '1.3.6.1.4.1.674.10893.1.20.130.11.1.11' => 'temperatureProbeCurValue',
	     '1.3.6.1.4.1.674.10893.1.20.130.11.1.13' => 'temperatureProbeComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.130.11.1.14' => 'temperatureProbeNexusID',
	     '1.3.6.1.4.1.674.10893.1.20.130.12.1.4'  => 'temperatureConnectionEnclosureName',
	     '1.3.6.1.4.1.674.10893.1.20.130.12.1.5'  => 'temperatureConnectionEnclosureNumber',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %temp_oid]);

	# No enclosure temperature probes is OK
	return if !defined $result;

	@output = @{ get_snmp_output($result, \%temp_oid) };
    }
    else {
	foreach my $enc (@enclosures) {
	    push @output, @{ run_omreport("storage enclosure controller=$enc->{ctrl} enclosure=$enc->{id} info=temps") };
	    map_item('ctrl', $enc->{ctrl}, \@output);
	    map_item('encl_id', $enc->{id}, \@output);
	    map_item('encl_name', $enc->{name}, \@output);
	}
    }

    my %temp_state
      = (
	 0  => 'Unknown',
	 1  => 'Ready',
	 2  => 'Failed',
	 4  => 'Offline',
	 6  => 'Degraded',
	 9  => 'Inactive',
	 21 => 'Missing',
	);

    # Check temperature probes on each of the enclosures
  TEMP:
    foreach my $out (@output) {
	if ($snmp) {
	    $id        = $out->{temperatureProbeNumber} - 1;
	    $name      = $out->{temperatureProbeName};
	    $state     = $temp_state{$out->{temperatureProbeState}};
	    $status    = $snmp_status{$out->{temperatureProbeComponentStatus}};
	    $unit      = $out->{temperatureProbeUnit};
	    $reading   = $out->{temperatureProbeCurValue};
	    $max_warn  = $out->{temperatureProbeMaxWarning};
	    $max_crit  = $out->{temperatureProbeMaxCritical};
	    $encl_id   = $out->{temperatureConnectionEnclosureNumber} - 1;
	    $encl_name = $out->{temperatureConnectionEnclosureName};
	    $nexus     = convert_nexus($out->{temperatureProbeNexusID});
	}
	else {
	    $id        = $out->{'ID'};
	    $name      = $out->{'Name'};
	    $state     = $out->{'State'};
	    $status    = $out->{'Status'};
	    $unit      = 'FIXME';
	    $reading   = $out->{'Reading'}; $reading =~ s{\s*C}{}xms;
	    $max_warn  = $out->{'Maximum Warning Threshold'}; $max_warn =~ s{\s*C}{}xms;
	    $max_crit  = $out->{'Maximum Failure Threshold'}; $max_crit =~ s{\s*C}{}xms;
	    $encl_id   = join q{:}, $out->{ctrl}, $out->{'encl_id'};
	    $encl_name = $out->{encl_name};
	    $nexus     = join q{:}, $out->{ctrl}, $out->{'encl_id'}, $id;
	}

	next TEMP if blacklisted('encl_temp', $nexus);

	# Default
	if ($status ne 'Ok') {
	    my $msg = sprintf '%s in enclosure %s [%s] is %s C at %s (%s max)',
	      $name, $encl_id, $encl_name, $state, $reading, $max_crit;
	    report('storage', $msg, $status2nagios{$status}, $nexus);
	}
	# Ok
	else {
	    my $msg = sprintf '%s in enclosure %s [%s]: %s C (%s max)',
	      $name, $encl_id, $encl_name, $reading, $max_crit;
	    report('storage', $msg, $E_OK, $nexus);
	}

	# Collect performance data
	if (defined $opt{perfdata}) {
	    $name =~ s{\A Temperature\sProbe\s(\d+) \z}{temp_$1}gxms;
	    my $pkey = "enclosure_${encl_id}_${name}";
	    my $pval = join q{;}, "${reading}C", $max_warn, $max_crit;
	    $perfdata{$pkey} = $pval;
	}
    }
    return;
}


#-----------------------------------------
# STORAGE: Check enclosure management modules (EMM)
#-----------------------------------------
sub check_enclosure_emms {
    return if $#controllers == -1;

    my $id        = undef;
    my $nexus     = undef;
    my $name      = undef;
    my $state     = undef;
    my $status    = undef;
    my $encl_id   = undef;
    my $encl_name = undef;
    my @output    = ();

    if ($snmp) {
	my %emms_oid
	  = (
	     '1.3.6.1.4.1.674.10893.1.20.130.13.1.1'  => 'enclosureManagementModuleNumber',
	     '1.3.6.1.4.1.674.10893.1.20.130.13.1.2'  => 'enclosureManagementModuleName',
	     '1.3.6.1.4.1.674.10893.1.20.130.13.1.4'  => 'enclosureManagementModuleState',
	     '1.3.6.1.4.1.674.10893.1.20.130.13.1.11' => 'enclosureManagementModuleComponentStatus',
	     '1.3.6.1.4.1.674.10893.1.20.130.13.1.12' => 'enclosureManagementModuleNexusID',
	     '1.3.6.1.4.1.674.10893.1.20.130.14.1.4'  => 'enclosureManagementModuleConnectionEnclosureName',
	     '1.3.6.1.4.1.674.10893.1.20.130.14.1.5'  => 'enclosureManagementModuleConnectionEnclosureNumber',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %emms_oid]);

	# No enclosure EMMs is OK
	return if !defined $result;

	@output = @{ get_snmp_output($result, \%emms_oid) };
    }
    else {
	foreach my $enc (@enclosures) {
	    push @output, @{ run_omreport("storage enclosure controller=$enc->{ctrl} enclosure=$enc->{id} info=emms") };
	    map_item('ctrl', $enc->{ctrl}, \@output);
	    map_item('encl_id', $enc->{id}, \@output);
	    map_item('encl_name', $enc->{name}, \@output);
	}
    }

    my %emms_state
      = (
	 0  => 'Unknown',
	 1  => 'Ready',
	 2  => 'Failed',
	 3  => 'Online',
	 4  => 'Offline',
	 5  => 'Not Installed',
	 6  => 'Degraded',
	 21 => 'Missing',
	);

    # Check temperature probes on each of the enclosures
  EMM:
    foreach my $out (@output) {
	if ($snmp) {
	    $id        = $out->{enclosureManagementModuleNumber} - 1;
	    $name      = $out->{enclosureManagementModuleName};
	    $state     = $emms_state{$out->{enclosureManagementModuleState}};
	    $status    = $snmp_status{$out->{enclosureManagementModuleComponentStatus}};
	    $encl_id   = $out->{enclosureManagementModuleConnectionEnclosureNumber} - 1;
	    $encl_name = $out->{enclosureManagementModuleConnectionEnclosureName};
	    $nexus     = convert_nexus($out->{enclosureManagementModuleNexusID});
	}
	else {
	    $id        = $out->{'ID'};
	    $name      = $out->{'Name'};
	    $state     = $out->{'State'};
	    $status    = $out->{'Status'};
	    $encl_id   = join q{:}, $out->{ctrl}, $out->{'encl_id'};
	    $encl_name = $out->{encl_name};
	    $nexus     = join q{:}, $out->{ctrl}, $out->{'encl_id'}, $id;
	}

	next EMM if blacklisted('encl_emm', $nexus);

	# Default
	if ($status ne 'Ok') {
	    my $msg = sprintf '%s in enclosure %s [%s] needs attention: %s',
	      $name, $encl_id, $encl_name, $state;
	    report('storage', $msg, $status2nagios{$status}, $nexus);
	}
	# Ok
	else {
	    my $msg = sprintf '%s in enclosure %s [%s] is %s',
	      $name, $encl_id, $encl_name, $state;
	    report('storage', $msg, $E_OK, $nexus);
	}
    }
    return;
}


#-----------------------------------------
# CHASSIS: Check memory modules
#-----------------------------------------
sub check_memory {
    my $index    = undef;
    my $status   = undef;
    my $location = undef;
    my $size     = undef;
    my $modes    = undef;
    my @failures = ();
    my @output   = ();

    if ($snmp) {
	my %dimm_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.1100.50.1.2.1'  => 'memoryDeviceIndex',
	     '1.3.6.1.4.1.674.10892.1.1100.50.1.5.1'  => 'memoryDeviceStatus',
	     '1.3.6.1.4.1.674.10892.1.1100.50.1.8.1'  => 'memoryDeviceLocationName',
	     '1.3.6.1.4.1.674.10892.1.1100.50.1.14.1' => 'memoryDeviceSize',
	     '1.3.6.1.4.1.674.10892.1.1100.50.1.20.1' => 'memoryDeviceFailureModes',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %dimm_oid]);

	if (!defined $result) {
	    printf "SNMP ERROR [memory]: %s.\n", $snmp_session->error;
	    $snmp_session->close;
	    exit $E_UNKNOWN;
	}

	@output = @{ get_snmp_output($result, \%dimm_oid) };
    }
    else {
	@output = @{ run_omreport("$omopt_chassis memory") };
    }

    # Note: These values are bit masks, so combination values are
    # possible. If value is 0 (zero), memory device has no faults.
    my %failure_mode
      = (
	 1  => 'ECC single bit correction warning rate exceeded',
	 2  => 'ECC single bit correction failure rate exceeded',
	 4  => 'ECC multibit fault encountered',
	 8  => 'ECC single bit correction logging disabled',
	 16 => 'device disabled because of spare activation',
	);

  DIMM:
    foreach my $out (@output) {
	@failures = ();  # Initialize
	if ($snmp) {
	    $index    = $out->{memoryDeviceIndex};
	    $status   = $snmp_status{$out->{memoryDeviceStatus}};
	    $location = $out->{memoryDeviceLocationName};
	    $size     = sprintf '%d MB', $out->{memoryDeviceSize}/1024;
	    $modes    = $out->{memoryDeviceFailureModes};
	    if ($modes > 0) {
		foreach my $mask (sort keys %failure_mode) {
		    if (($modes & $mask) != 0) { push @failures, $failure_mode{$mask}; }
		}
	    }
	}
	else {
	    $index    = $out->{'Type'} eq '[Not Occupied]' ? undef : $out->{'Index'};
	    $status   = $out->{'Status'};
	    $location = $out->{'Connector Name'};
	    $size     = $out->{'Size'};
	    if (defined $size) {
		$size =~ s{\s\s}{ }gxms;
	    }
	    # Run 'omreport chassis memory index=X' to get the failures
	    if ($status ne 'Ok' && defined $index) {
		foreach (@{ run_command("$omreport $omopt_chassis memory index=$index -fmt ssv") }) {
		    if (m/\A Failures; (.+?) \z/xms) {
			chop(my $fail = $1);
			push @failures, split m{\.}xms, $fail;
		    }
		}
	    }
	}
	$location =~ s{\A \s*(.*?)\s* \z}{$1}xms;

	next DIMM if blacklisted('dimm', $index);

	# Ignore empty memory slots
	next DIMM if !defined $index;
	$count{dimm}++;

	if ($status ne 'Ok') {
	    my $msg = undef;
	    if (scalar @failures == 0) {
		$msg = sprintf 'Memory module %d [%s, %s] needs attention (%s)',
		  $index, $location, $size, $status;
	    }
	    else {
		$msg = sprintf 'Memory module %d [%s, %s] needs attention: %s',
		  $index, $location, $size, (join q{, }, @failures);
	    }

	    report('chassis', $msg, $status2nagios{$status}, $index);
	}
	# Ok
	else {
	    my $msg = sprintf 'Memory module %d [%s, %s] is %s',
	      $index, $location, $size, $status;
	    report('chassis', $msg, $E_OK, $index);
	}
    }
    return;
}


#-----------------------------------------
# CHASSIS: Check fans
#-----------------------------------------
sub check_fans {
    my $index    = undef;
    my $status   = undef;
    my $reading  = undef;
    my $location = undef;
    my $max_crit = undef;
    my $max_warn = undef;
    my @output   = ();

    if ($snmp) {
	my %cool_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.700.12.1.2.1'  => 'coolingDeviceIndex',
	     '1.3.6.1.4.1.674.10892.1.700.12.1.5.1'  => 'coolingDeviceStatus',
	     '1.3.6.1.4.1.674.10892.1.700.12.1.6.1'  => 'coolingDeviceReading',
	     '1.3.6.1.4.1.674.10892.1.700.12.1.8.1'  => 'coolingDeviceLocationName',
	     '1.3.6.1.4.1.674.10892.1.700.12.1.10.1' => 'coolingDeviceUpperCriticalThreshold',
	     '1.3.6.1.4.1.674.10892.1.700.12.1.11.1' => 'coolingDeviceUpperNonCriticalThreshold',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %cool_oid]);

	if ($blade && !defined $result) {
	    return 0;
	}
	elsif (!$blade && !defined $result) {
	    printf "SNMP ERROR [cooling]: %s.\n", $snmp_session->error;
	    $snmp_session->close;
	    exit $E_UNKNOWN;
	}

	@output = @{ get_snmp_output($result, \%cool_oid) };
    }
    else {
	@output = @{ run_omreport("$omopt_chassis fans") };
    }

  FAN:
    foreach my $out (@output) {
	if ($snmp) {
	    $index    = $out->{coolingDeviceIndex};
	    $status   = $snmp_probestatus{$out->{coolingDeviceStatus}};
	    $reading  = $out->{coolingDeviceReading};
	    $location = $out->{coolingDeviceLocationName};
	    $max_crit = exists $out->{coolingDeviceUpperCriticalThreshold}
	      ? $out->{coolingDeviceUpperCriticalThreshold} : 0;
	    $max_warn = exists $out->{coolingDeviceUpperNonCriticalThreshold}
	      ? $out->{coolingDeviceUpperNonCriticalThreshold} : 0;
	}
	else {
	    $index    = $out->{'Index'};
	    $status   = $out->{'Status'};
	    $reading  = $out->{'Reading'};
	    $location = $out->{'Probe Name'};
	    $max_crit = $out->{'Maximum Failure Threshold'} ne '[N/A]'
	      ? $out->{'Maximum Failure Threshold'} : 0;
	    $max_warn = $out->{'Maximum Warning Threshold'} ne '[N/A]'
	      ? $out->{'Maximum Warning Threshold'} : 0;
	    $reading  =~ s{\A (\d+).* \z}{$1}xms;
	    $max_warn =~ s{\A (\d+).* \z}{$1}xms;
	    $max_crit =~ s{\A (\d+).* \z}{$1}xms;
	}

	next FAN if blacklisted('fan', $index);
	$count{fan}++;

	if ($status ne 'Ok') {
	    my $msg = sprintf 'Chassis fan %d [%s] needs attention: %s',
	      $index, $location, $status;
	    my $err = $snmp ? $probestatus2nagios{$status} : $status2nagios{$status};
	    report('chassis', $msg, $err, $index);
	}
	else {
	    my $msg = sprintf 'Chassis fan %d [%s]: %s',
	      $index, $location, $reading;
	    report('chassis', $msg, $E_OK, $index);
	}

	# Collect performance data
	if (defined $opt{perfdata}) {
	    my $pname = lc $location;
	    $pname =~ s{\s}{_}gxms;
	    $pname =~ s{proc_}{cpu#}xms;
	    my $pkey = join q{_}, 'fan', $index, $pname;
	    my $pval = join q{;}, "${reading}RPM", $max_warn, $max_crit;
	    $perfdata{$pkey} = $pval;
	}
    }
    return;
}


#-----------------------------------------
# CHASSIS: Check power supplies
#-----------------------------------------
sub check_powersupplies {
    my $index    = undef;
    my $status   = undef;
    my $type     = undef;
    my $err_type = undef;
    my $state    = undef;
    my @states   = ();
    my @output   = ();

    if ($snmp) {
	my %ps_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.600.12.1.2.1'  => 'powerSupplyIndex',
	     '1.3.6.1.4.1.674.10892.1.600.12.1.5.1'  => 'powerSupplyStatus',
	     '1.3.6.1.4.1.674.10892.1.600.12.1.7.1'  => 'powerSupplyType',
	     '1.3.6.1.4.1.674.10892.1.600.12.1.11.1' => 'powerSupplySensorState',
	     '1.3.6.1.4.1.674.10892.1.600.12.1.12.1' => 'powerSupplyConfigurationErrorType',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %ps_oid]);

	# No instrumented PSU is OK (blades, low-end servers)
	return 0 if !defined $result;

	@output = @{ get_snmp_output($result, \%ps_oid) };
    }
    else {
	@output = @{ run_omreport("$omopt_chassis pwrsupplies") };
    }

    my %ps_type
      = (
	 1  => 'Other',
	 2  => 'Unknown',
	 3  => 'Linear',
	 4  => 'Switching',
	 5  => 'Battery',
	 6  => 'Uninterruptible Power Supply',
	 7  => 'Converter',
	 8  => 'Regulator',
	 9  => 'AC',
	 10 => 'DC',
	 11 => 'VRM',
	);

    my %ps_state
      = (
	 1  => 'Presence detected',
	 2  => 'Failure detected',
	 4  => 'Predictive Failure',
	 8  => 'AC lost',
	 16 => 'AC lost or out-of-range',
	 32 => 'AC out-of-range but present',
	 64 => 'Configuration error',
	);

    my %ps_config_error_type
      = (
	 1 => 'Vendor mismatch',
	 2 => 'Revision mismatch',
	 3 => 'Processor missing',
	);

  PS:
    foreach my $out (@output) {
	if ($snmp) {
	    @states = ();  # contains states for the PS

	    $index    = $out->{powerSupplyIndex} - 1;
	    $status   = $snmp_status{$out->{powerSupplyStatus}};
	    $type     = $ps_type{$out->{powerSupplyType}};
	    $err_type = defined $out->{powerSupplyConfigurationErrorType}
	      ? $ps_config_error_type{$out->{powerSupplyConfigurationErrorType}} : undef;

	    # get the combined state from the StatusReading OID
	    foreach my $mask (sort keys %ps_state) {
		if (($out->{powerSupplySensorState} & $mask) != 0) {
		    push @states, $ps_state{$mask};
		}
	    }

	    # If configuration error, also include the error type
	    if (defined $err_type) {
		push @states, $err_type;
	    }

	    # Finally, construct the state string
	    $state = join q{, }, @states;
	}
	else {
	    $index  = $out->{'Index'};
	    $status = $out->{'Status'};
	    $type   = $out->{'Type'};
	    $state  = $out->{'Online Status'};
	}

	next PS if blacklisted('ps', $index);
	$count{power}++;

	if ($status ne 'Ok') {
	    my $msg = sprintf 'Power Supply %d [%s] needs attention: %s',
	      $index, $type, $state;
	    report('chassis', $msg, $status2nagios{$status}, $index);
	}
	else {
	    my $msg = sprintf 'Power Supply %d [%s]: %s',
	      $index, $type, $state;
	    report('chassis', $msg, $E_OK, $index);
	}
    }
    return;
}


#-----------------------------------------
# CHASSIS: Check temperatures
#-----------------------------------------
sub check_temperatures {
    my $index    = undef;
    my $status   = undef;
    my $reading  = undef;
    my $location = undef;
    my $max_crit = undef;
    my $max_warn = undef;
    my $min_warn = undef;
    my $min_crit = undef;
    my $type     = undef;
    my $discrete = undef;
    my @output = ();

    # Getting custom temperature thresholds (user option)
    my %warn_threshold = %{ custom_temperature_thresholds('w') };
    my %crit_threshold = %{ custom_temperature_thresholds('c') };

    if ($snmp) {
	my %temp_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.700.20.1.2.1'  => 'temperatureProbeIndex',
	     '1.3.6.1.4.1.674.10892.1.700.20.1.5.1'  => 'temperatureProbeStatus',
	     '1.3.6.1.4.1.674.10892.1.700.20.1.6.1'  => 'temperatureProbeReading',
	     '1.3.6.1.4.1.674.10892.1.700.20.1.7.1'  => 'temperatureProbeType',
	     '1.3.6.1.4.1.674.10892.1.700.20.1.8.1'  => 'temperatureProbeLocationName',
	     '1.3.6.1.4.1.674.10892.1.700.20.1.10.1' => 'temperatureProbeUpperCriticalThreshold',
	     '1.3.6.1.4.1.674.10892.1.700.20.1.11.1' => 'temperatureProbeUpperNonCriticalThreshold',
	     '1.3.6.1.4.1.674.10892.1.700.20.1.12.1' => 'temperatureProbeLowerNonCriticalThreshold',
	     '1.3.6.1.4.1.674.10892.1.700.20.1.13.1' => 'temperatureProbeLowerCriticalThreshold',
	     '1.3.6.1.4.1.674.10892.1.700.20.1.16.1' => 'temperatureProbeDiscreteReading',
	    );
	# this didn't work well for some reason
	#my $result = $snmp_session->get_entries(-columns => [keys %temp_oid]);

	# Getting values using the table
	my $temperatureProbeTable = '1.3.6.1.4.1.674.10892.1.700.20';
	my $result = $snmp_session->get_table(-baseoid => $temperatureProbeTable);

	if (!defined $result) {
	    printf "SNMP ERROR [temperatures]: %s.\n", $snmp_session->error;
	    $snmp_session->close;
	    exit $E_UNKNOWN;
	}

	@output = @{ get_snmp_output($result, \%temp_oid) };
    }
    else {
	@output = @{ run_omreport("$omopt_chassis temps") };
    }

    my %probe_type
      = (
	 1  => 'Other',      # type is other than following values
	 2  => 'Unknown',    # type is unknown
	 3  => 'AmbientESM', # type is Ambient Embedded Systems Management temperature probe
	 16 => 'Discrete',   # type is temperature probe with discrete reading
	);

  TEMP:
    foreach my $out (@output) {
	if ($snmp) {
	    $index    = $out->{temperatureProbeIndex} - 1;
	    $status   = $snmp_probestatus{$out->{temperatureProbeStatus}};
	    $reading  = $out->{temperatureProbeReading} / 10;
	    $location = $out->{temperatureProbeLocationName};
	    $max_crit = $out->{temperatureProbeUpperCriticalThreshold} / 10;
	    $max_warn = $out->{temperatureProbeUpperNonCriticalThreshold} / 10;
	    $min_crit = exists $out->{temperatureProbeLowerCriticalThreshold}
	      ? $out->{temperatureProbeLowerCriticalThreshold} / 10 : '[N/A]';
	    $min_warn = exists $out->{temperatureProbeLowerNonCriticalThreshold}
	      ? $out->{temperatureProbeLowerNonCriticalThreshold} / 10 : '[N/A]';
	    $type     = $probe_type{$out->{temperatureProbeType}};
	    $discrete = exists $out->{temperatureProbeDiscreteReading}
	      ? $out->{temperatureProbeDiscreteReading} : undef;
	}
	else {
	    $index    = $out->{'Index'};
	    $status   = $out->{'Status'};
	    $reading  = $out->{'Reading'}; $reading =~ s{\.0\s+C}{}xms;
	    $location = $out->{'Probe Name'};
	    $max_crit = $out->{'Maximum Failure Threshold'}; $max_crit =~ s{\.0\s+C}{}xms;
	    $max_warn = $out->{'Maximum Warning Threshold'}; $max_warn =~ s{\.0\s+C}{}xms;
	    $min_crit = $out->{'Minimum Failure Threshold'}; $min_crit =~ s{\.0\s+C}{}xms;
	    $min_warn = $out->{'Minimum Warning Threshold'}; $min_warn =~ s{\.0\s+C}{}xms;
	    $type     = $reading =~ m{\A\d+\z}xms ? 'AmbientESM' : 'Discrete';
	    $discrete = $reading;
	}

	next TEMP if blacklisted('temp', $index);
	$count{temp}++;

	if ($type eq 'Discrete') {
	    my $msg = sprintf 'Temperature probe %d (%s): is %s',
	      $index, $location, $discrete;
	    my $err = $snmp ? $probestatus2nagios{$status} : $status2nagios{$status};
	    report('chassis', $msg, $err, $index);
	}
	else {
	    # First check according to custom thresholds
	    if (exists $crit_threshold{$index}{max} and $reading > $crit_threshold{$index}{max}) {
		# Custom critical MAX
		my $msg = sprintf 'Temperature Probe %d [%s] reads %d C (custom max=%d)',
		  $index, $location, $reading, $crit_threshold{$index}{max};
		report('chassis', $msg, $E_CRITICAL, $index);
	    }
	    elsif (exists $warn_threshold{$index}{max} and $reading > $warn_threshold{$index}{max}) {
		# Custom warning MAX
		my $msg = sprintf 'Temperature Probe %d [%s] reads %d C (custom max=%d)',
		  $index, $location, $reading, $warn_threshold{$index}{max};
		report('chassis', $msg, $E_WARNING, $index);
	    }
	    elsif (exists $crit_threshold{$index}{min} and $reading < $crit_threshold{$index}{min}) {
		# Custom critical MIN
		my $msg = sprintf 'Temperature Probe %d [%s] reads %d C (custom min=%d)',
		  $index, $location, $reading, $crit_threshold{$index}{min};
		report('chassis', $msg, $E_CRITICAL, $index);
	    }
	    elsif (exists $warn_threshold{$index}{min} and $reading < $warn_threshold{$index}{min}) {
		# Custom warning MIN
		my $msg = sprintf 'Temperature Probe %d [%s] reads %d C (custom min=%d)',
		  $index, $location, $reading, $warn_threshold{$index}{min};
		report('chassis', $msg, $E_WARNING, $index);
	    }
	    elsif ($status ne 'Ok' and $max_crit ne '[N/A]' and $reading > $max_crit) {
		my $msg = sprintf 'Temperature Probe %d [%s] is critically high at %d C',
		  $index, $location, $reading;
		my $err = $snmp ? $probestatus2nagios{$status} : $status2nagios{$status};
		report('chassis', $msg, $err, $index);
	    }
	    elsif ($status ne 'Ok' and $max_warn ne '[N/A]' and $reading > $max_warn) {
		my $msg = sprintf 'Temperature Probe %d [%s] is too high at %d C',
		  $index, $location, $reading;
		my $err = $snmp ? $probestatus2nagios{$status} : $status2nagios{$status};
		report('chassis', $msg, $err, $index);
	    }
	    elsif ($status ne 'Ok' and $min_crit ne '[N/A]' and $reading < $min_crit) {
		my $msg = sprintf 'Temperature Probe %d [%s] is critically low at %d C',
		  $index, $location, $reading;
		my $err = $snmp ? $probestatus2nagios{$status} : $status2nagios{$status};
		report('chassis', $msg, $err, $index);
	    }
	    elsif ($status ne 'Ok' and $min_warn ne '[N/A]' and $reading < $min_warn) {
		my $msg = sprintf 'Temperature Probe %d [%s] is too low at %d C',
		  $index, $location, $reading;
		my $err = $snmp ? $probestatus2nagios{$status} : $status2nagios{$status};
		report('chassis', $msg, $err, $index);
	    }
	    # Ok
	    else {
		my $msg = sprintf 'Temperature Probe %d [%s] reads %d C',
		  $index, $location, $reading;
		if ($min_warn eq '[N/A]' and $min_crit eq '[N/A]') {
		    $msg .= sprintf ' (max=%s/%s)', $max_warn, $max_crit;
		}
		else {
		    $msg .= sprintf ' (min=%s/%s, max=%s/%s)',
		      $min_warn, $min_crit, $max_warn, $max_crit;
		}		    
		my $err = $snmp ? $probestatus2nagios{$status} : $status2nagios{$status};
		report('chassis', $msg, $err, $index);
	    }

	    # Collect performance data
	    if (defined $opt{perfdata}) {
		my $pname = lc $location;
		$pname =~ s{\s}{_}gxms;
		$pname =~ s{_temp\z}{}xms;
		$pname =~ s{proc_}{cpu#}xms;
		my $pkey = join q{_}, 'temp', $index, $pname;
		my $pval = join q{;}, "${reading}C", $max_warn, $max_crit;
		$perfdata{$pkey} = $pval;
	    }
	}
    }
    return;
}


#-----------------------------------------
# CHASSIS: Check processors
#-----------------------------------------
sub check_processors {
    my $index   = undef;
    my $status  = undef;
    my $state   = undef;
    my $oid_ver = 'new';
    my @output  = ();

    if ($snmp) {

	# NOTE: For some reason, older models don't have the
	# "Processor Device Status" OIDs. We first check the newer
	# (preferred) OIDs, and if that doesn't work, check the "old"
	# OIDs.

	my %cpu_oid_new  # for newer models
	  = (
	     '1.3.6.1.4.1.674.10892.1.1100.32.1.2.1' => 'processorDeviceStatusIndex',
	     '1.3.6.1.4.1.674.10892.1.1100.32.1.5.1' => 'processorDeviceStatusStatus',
	     '1.3.6.1.4.1.674.10892.1.1100.32.1.6.1' => 'processorDeviceStatusReading',
	    );

	my %cpu_oid_old  # for older models
	  = (
             '1.3.6.1.4.1.674.10892.1.1100.30.1.2.1' => 'processorDeviceIndex',
             '1.3.6.1.4.1.674.10892.1.1100.30.1.5.1' => 'processorDeviceStatus',
             '1.3.6.1.4.1.674.10892.1.1100.30.1.9.1' => 'processorDeviceStatusState',
	    );

	my $result = $snmp_session->get_entries(-columns => [keys %cpu_oid_new]);

	if (!defined $result) {
	    $oid_ver = 'old';
	    $result = $snmp_session->get_entries(-columns => [keys %cpu_oid_old]);
	}

	if (!defined $result) {
	    printf "SNMP ERROR [processors]: %s.\n", $snmp_session->error;
	    $snmp_session->close;
	    exit $E_UNKNOWN;
	}

	if ($oid_ver eq 'new') {
	    @output = @{ get_snmp_output($result, \%cpu_oid_new) };
	}
	else {
	    @output = @{ get_snmp_output($result, \%cpu_oid_old) };
	}
    }
    else {
	@output = @{ run_omreport("$omopt_chassis processors") };
    }

    my %cpu_state
      = (
         1 => 'Other',         # other than following values
         2 => 'Unknown',       # unknown
         3 => 'Enabled',       # enabled
         4 => 'User Disabled', # disabled by user via BIOS setup
         5 => 'BIOS Disabled', # disabled by BIOS (POST error)
         6 => 'Idle',          # idle
        );

    my %cpu_reading
      = (
	 1    => 'Internal Error',      # Internal Error
	 2    => 'Thermal Trip',        # Thermal Trip
	 32   => 'Configuration Error', # Configuration Error
	 128  => 'Present',             # Processor Present
	 256  => 'Disabled',            # Processor Disabled
	 512  => 'Terminator Present',  # Terminator Present
	 1024 => 'Throttled',           # Processor Throttled
	);


  CPU:
    foreach my $out (@output) {
	if ($snmp) {
	    if ($oid_ver eq 'new') {
		my @states  = ();  # contains states for the CPU
		$index  = $out->{processorDeviceStatusIndex} - 1;
		$status = $snmp_status{$out->{processorDeviceStatusStatus}};

		# get the combined state from the StatusReading OID
		foreach my $mask (sort keys %cpu_reading) {
		    if (($out->{processorDeviceStatusReading} & $mask) != 0) {
			push @states, $cpu_reading{$mask};
		    }
		}

		# Finally, create the state string
		$state = join q{, }, @states;
	    }
	    else {
		$index  = $out->{processorDeviceIndex} - 1;
		$status = $snmp_status{$out->{processorDeviceStatus}};
		$state  = $cpu_state{$out->{processorDeviceStatusState}};
	    }
	}
	else {
	    $index  = $out->{'Index'};
	    $status = $out->{'Status'};
	    $state  = $out->{'State'};
	}

	next CPU if blacklisted('cpu', $index);

	# Ignore unoccupied CPU slots (omreport)
	next CPU if (defined $out->{'Processor Manufacturer'}
		     and $out->{'Processor Manufacturer'} eq '[Not Occupied]')
	  or (defined $out->{'Processor Brand'} and $out->{'Processor Brand'} eq '[Not Occupied]');

	# Ignore unoccupied CPU slots (snmp)
	if ($snmp and exists $out->{processorDeviceStatusReading}
	    and $out->{processorDeviceStatusReading} == 0) {
	    next CPU;
	}

	$count{cpu}++;

	# Default
	if ($status ne 'Ok') {
	    my $msg = sprintf 'CPU %d needs attention: %s',
	      $index, $state;
	    report('chassis', $msg, $status2nagios{$status}, $index);
	}
	# Ok
	else {
	    my $msg = sprintf 'CPU %d is %s',
	      $index, $state;
	    report('chassis', $msg, $E_OK, $index);
	}
    }
    return;
}


#-----------------------------------------
# CHASSIS: Check voltage probes
#-----------------------------------------
sub check_volts {
    my $index    = undef;
    my $status   = undef;
    my $reading  = undef;
    my $location = undef;
    my @output = ();

    if ($snmp) {
	my %volt_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.600.20.1.2.1'  => 'voltageProbeIndex',
	     '1.3.6.1.4.1.674.10892.1.600.20.1.5.1'  => 'voltageProbeStatus',
	     '1.3.6.1.4.1.674.10892.1.600.20.1.6.1'  => 'voltageProbeReading',
	     '1.3.6.1.4.1.674.10892.1.600.20.1.8.1'  => 'voltageProbeLocationName',
	     '1.3.6.1.4.1.674.10892.1.600.20.1.16.1' => 'voltageProbeDiscreteReading',
	    );

	my $voltageProbeTable = '1.3.6.1.4.1.674.10892.1.600.20.1';
        my $result = $snmp_session->get_table(-baseoid => $voltageProbeTable);

	if (!defined $result) {
	    printf "SNMP ERROR [voltage]: %s.\n", $snmp_session->error;
	    $snmp_session->close;
	    exit $E_UNKNOWN;
	}

	@output = @{ get_snmp_output($result, \%volt_oid) };
    }
    else {
	@output = @{ run_omreport("$omopt_chassis volts") };
    }

    my %volt_discrete_reading
      = (
	 1 => 'Good',
	 2 => 'Bad',
	);

  VOLT:
    foreach my $out (@output) {
	if ($snmp) {
	    $index    = $out->{voltageProbeIndex} - 1;
	    $status   = $snmp_status{$out->{voltageProbeStatus}};
	    $reading  = exists $out->{voltageProbeReading}
	      ? sprintf('%.3f V', $out->{voltageProbeReading}/1000)
	      : $volt_discrete_reading{$out->{voltageProbeDiscreteReading}};
	    $location = $out->{voltageProbeLocationName};
	}
	else {
	    $index    = $out->{'Index'};
	    $status   = $out->{'Status'};
	    $reading  = $out->{'Reading'};
	    $location = $out->{'Probe Name'};
	}

	next VOLT if blacklisted('volt', $index);
	$count{volt}++;

	my $msg = sprintf 'Voltage sensor %d [%s] is %s',
	  $index, $location, $reading;
	my $err = $snmp ? $probestatus2nagios{$status} : $status2nagios{$status};
	report('chassis', $msg, $err, $index);
    }
    return;
}


#-----------------------------------------
# CHASSIS: Check batteries
#-----------------------------------------
sub check_batteries {
    my $index    = undef;
    my $status   = undef;
    my $reading  = undef;
    my $location = undef;
    my @output = ();

    if ($snmp) {
	my %bat_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.600.50.1.2.1' => 'batteryIndex',
	     '1.3.6.1.4.1.674.10892.1.600.50.1.5.1' => 'batteryStatus',
	     '1.3.6.1.4.1.674.10892.1.600.50.1.6.1' => 'batteryReading',
	     '1.3.6.1.4.1.674.10892.1.600.50.1.7.1' => 'batteryLocationName',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %bat_oid]);

	# No batteries is OK
	return 0 if !defined $result;

	@output = @{ get_snmp_output($result, \%bat_oid) };
    }
    else {
	@output = @{ run_omreport("$omopt_chassis batteries") };
    }

    my %bat_reading
      = (
	 1 => 'Predictive Failure',
	 2 => 'Failed',
	 4 => 'Presence Detected',
	);

  BATTERY:
    foreach my $out (@output) {
	if ($snmp) {
	    $index    = $out->{batteryIndex} - 1;
	    $status   = $snmp_status{$out->{batteryStatus}};
	    $reading  = $bat_reading{$out->{batteryReading}};
	    $location = $out->{batteryLocationName};
	}
	else {
	    $index    = $out->{'Index'};
	    $status   = $out->{'Status'};
	    $reading  = $out->{'Reading'};
	    $location = $out->{'Probe Name'};
	}

	next BATTERY if blacklisted('bp', $index);
	$count{bat}++;

	my $msg = sprintf 'Battery probe %d [%s] is %s',
	  $index, $location, $reading;
	report('chassis', $msg, $status2nagios{$status}, $index);
    }
    return;
}


#-----------------------------------------
# CHASSIS: Check amperage probes (power monitoring)
#-----------------------------------------
sub check_pwrmonitoring {
    my $index    = undef;
    my $status   = undef;
    my $reading  = undef;
    my $location = undef;
    my $max_crit = undef;
    my $max_warn = undef;
    my $unit     = undef;
    my @output = ();

    if ($snmp) {
	my %amp_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.600.30.1.2.1'  => 'amperageProbeIndex',
	     '1.3.6.1.4.1.674.10892.1.600.30.1.5.1'  => 'amperageProbeStatus',
	     '1.3.6.1.4.1.674.10892.1.600.30.1.6.1'  => 'amperageProbeReading',
	     '1.3.6.1.4.1.674.10892.1.600.30.1.7.1'  => 'amperageProbeType',
	     '1.3.6.1.4.1.674.10892.1.600.30.1.8.1'  => 'amperageProbeLocationName',
	     '1.3.6.1.4.1.674.10892.1.600.30.1.10.1' => 'amperageProbeUpperCriticalThreshold',
	     '1.3.6.1.4.1.674.10892.1.600.30.1.11.1' => 'amperageProbeUpperNonCriticalThreshold',
	     '1.3.6.1.4.1.674.10892.1.600.30.1.16.1' => 'amperageProbeDiscreteReading',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %amp_oid]);

	# No pwrmonitoring is OK
	return 0 if !defined $result;

	@output = @{ get_snmp_output($result, \%amp_oid) };
    }
    else {
	@output = @{ run_omreport("$omopt_chassis pwrmonitoring") };
    }

    my %amp_type   # Amperage probe types
      = (
	 1  => 'amperageProbeTypeIsOther',            # other than following values
	 2  => 'amperageProbeTypeIsUnknown',          # unknown
	 3  => 'amperageProbeTypeIs1Point5Volt',      # 1.5 amperage probe
	 4  => 'amperageProbeTypeIs3Point3volt',      # 3.3 amperage probe
	 5  => 'amperageProbeTypeIs5Volt',            # 5 amperage probe
	 6  => 'amperageProbeTypeIsMinus5Volt',       # -5 amperage probe
	 7  => 'amperageProbeTypeIs12Volt',           # 12 amperage probe
	 8  => 'amperageProbeTypeIsMinus12Volt',      # -12 amperage probe
	 9  => 'amperageProbeTypeIsIO',               # I/O probe
	 10 => 'amperageProbeTypeIsCore',             # Core probe
	 11 => 'amperageProbeTypeIsFLEA',             # FLEA (standby) probe
	 12 => 'amperageProbeTypeIsBattery',          # Battery probe
	 13 => 'amperageProbeTypeIsTerminator',       # SCSI Termination probe
	 14 => 'amperageProbeTypeIs2Point5Volt',      # 2.5 amperage probe
	 15 => 'amperageProbeTypeIsGTL',              # GTL (ground termination logic) probe
	 16 => 'amperageProbeTypeIsDiscrete',         # amperage probe with discrete reading
	 23 => 'amperageProbeTypeIsPowerSupplyAmps',  # Power Supply probe with reading in Amps
	 24 => 'amperageProbeTypeIsPowerSupplyWatts', # Power Supply probe with reading in Watts
	 25 => 'amperageProbeTypeIsSystemAmps',       # System probe with reading in Amps
	 26 => 'amperageProbeTypeIsSystemWatts',      # System probe with reading in Watts
	);

    my %amp_discrete
      = (
	 1 => 'Good',
	 2 => 'Bad',
	);

    my %amp_unit
      = (
	 'amperageProbeTypeIsPowerSupplyAmps'  => 'hA',  # tenths of Amps
	 'amperageProbeTypeIsSystemAmps'       => 'hA',  # tenths of Amps
	 'amperageProbeTypeIsPowerSupplyWatts' => 'W',   # Watts
	 'amperageProbeTypeIsSystemWatts'      => 'W',   # Watts
	 'amperageProbeTypeIsDiscrete'         => q{},   # discrete reading, no unit
	);

  AMP:
    foreach my $out (@output) {
	if ($snmp) {
	    $index    = $out->{amperageProbeIndex} - 1;
	    $status   = $snmp_status{$out->{amperageProbeStatus}};
	    $reading  = $amp_type{$out->{amperageProbeType}} eq 'amperageProbeTypeIsDiscrete'
	      ? $amp_discrete{$out->{amperageProbeDiscreteReading}}
		: $out->{amperageProbeReading};
	    $location = $out->{amperageProbeLocationName};
	    $max_crit = exists $out->{amperageProbeUpperCriticalThreshold}
	      ? $out->{amperageProbeUpperCriticalThreshold} : 0;
	    $max_warn = exists $out->{amperageProbeUpperNonCriticalThreshold}
	      ? $out->{amperageProbeUpperNonCriticalThreshold} : 0;
	    $unit     = exists $amp_unit{$amp_type{$out->{amperageProbeType}}}
	      ? $amp_unit{$amp_type{$out->{amperageProbeType}}} : 'mA';
	    if ($unit eq 'hA') {
		$reading  /= 10;
		$max_crit /= 10;
		$max_warn /= 10;
		$unit      = 'A';
	    }
	}
	else {
	    $index    = $out->{'Index'};
	    next if $index !~ m/^\d+$/x;
	    $status   = $out->{'Status'};
	    $reading  = $out->{'Reading'};
	    $location = $out->{'Probe Name'};
	    $max_crit = $out->{'Failure Threshold'} ne '[N/A]'
	      ? $out->{'Failure Threshold'} : 0;
	    $max_warn = $out->{'Warning Threshold'} ne '[N/A]'
	      ? $out->{'Warning Threshold'} : 0;
	    $reading  =~ s{\A (\d+.*?)\s+([a-zA-Z]+) \s*\z}{$1}xms;
	    $unit     = $2;
	    $max_warn =~ s{\A (\d+.*?)\s+[a-zA-Z]+ \s*\z}{$1}xms;
	    $max_crit =~ s{\A (\d+.*?)\s+[a-zA-Z]+ \s*\z}{$1}xms;
	}

	next AMP if blacklisted('pm', $index);
	next AMP if $index !~ m{\A \d+ \z}xms;
	$count{amp}++;

	my $msg = sprintf 'Amperage probe %d [%s] reads %s %s',
	  $index, $location, $reading, $unit, $status;
	report('chassis', $msg, $status2nagios{$status}, $index);

	# Collect performance data
	if (defined $opt{perfdata}) {
	    next AMP if $reading !~ m{\A \d+(\.\d+)? \z}xms; # discrete reading (not number)
	    my $pname = lc $location;
	    $pname =~ s{\s}{_}gxms;
	    my $pkey = join q{_}, 'pwr_mon', $index, $pname;
	    my $pval = join q{;}, "$reading$unit", $max_warn, $max_crit;
	    $perfdata{$pkey} = $pval;
	}
    }

    # Collect EXTRA performance data not found at first run. This is a
    # rather ugly hack
    if (defined $opt{perfdata} && !$snmp) {
	my $found = 0;
	my $index = 0;
	my %used  = ();

	# find used indexes
	foreach (keys %perfdata) {
	    if (m/\A pwr_mon_(\d+)/xms) {
		$used{$1} = 1;
	    }
	}

      AMP2:
	foreach my $line (@{ run_command("$omreport $omopt_chassis pwrmonitoring -fmt ssv") }) {
	    chop $line;
	    if ($line eq 'Location;Reading') {
		$found = 1;
		next AMP2;
	    }
	    if ($line eq q{}) {
		$found = 0;
		next AMP2;
	    }
	    if ($found and $line =~ m/\A ([^;]+?) ; (\d*\.\d+) \s ([AW]) \z/xms) {
		my $aname = lc $1;
		my $aval = $2;
		my $aunit = $3;
		$aname =~ s{\s}{_}gxms;

		# don't use an existing index
		while (exists $used{$index}) { ++$index; }

		$perfdata{"pwr_mon_${index}_${aname}"} = "$aval$aunit;0;0";
		++$index;
	    }
	}
    }

    return;
}


#-----------------------------------------
# CHASSIS: Check intrusion
#-----------------------------------------
sub check_intrusion {
    my $index    = undef;
    my $status   = undef;
    my $reading  = undef;
    my @output = ();

    if ($snmp) {
	my %int_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.300.70.1.2.1' => 'intrusionIndex',
	     '1.3.6.1.4.1.674.10892.1.300.70.1.5.1' => 'intrusionStatus',
	     '1.3.6.1.4.1.674.10892.1.300.70.1.6.1' => 'intrusionReading',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %int_oid]);

	# No intrusion is OK
	return 0 if !defined $result;

	@output = @{ get_snmp_output($result, \%int_oid) };
    }
    else {
	@output = @{ run_omreport("$omopt_chassis intrusion") };
    }

    my %int_reading
      = (
	 1 => 'Not Breached',          # chassis not breached and no uncleared breaches
	 2 => 'Breached',              # chassis currently breached
	 3 => 'Breached Prior',        # chassis breached prior to boot and has not been cleared
	 4 => 'Breach Sensor Failure', # intrusion sensor has failed
	);

  INTRUSION:
    foreach my $out (@output) {
	if ($snmp) {
	    $index    = $out->{intrusionIndex} - 1;
	    $status   = $snmp_status{$out->{intrusionStatus}};
	    $reading  = $int_reading{$out->{intrusionReading}};
	}
	else {
	    $index    = $out->{'Index'};
	    $status   = $out->{'Status'};
	    $reading  = $out->{'State'};
	}

	next INTRUSION if blacklisted('intr', $index);
	$count{intr}++;

	if ($status ne 'Ok') {
	    my $msg = sprintf 'Chassis intrusion %d detected: %s',
	      $index, $reading;
	    report('chassis', $msg, $E_WARNING, $index);
	}
	# Ok
	else {
	    my $msg = sprintf 'Chassis intrusion %d detection: %s (%s)',
	      $index, $status, $reading;
	    report('chassis', $msg, $E_OK, $index);
	}
    }
    return;
}


#-----------------------------------------
# CHASSIS: Check alert log
#-----------------------------------------
sub check_alertlog {
    return if $snmp; # Not supported with SNMP

    my @output = @{ run_omreport("$omopt_system alertlog") };
    foreach my $out (@output) {
	++$count{alert}{$out->{Severity}};
    }

    # Create error messages and set exit value if appropriate
    my $err = 0;
    if ($count{alert}{'Critical'} > 0)        { $err = $E_CRITICAL; }
    elsif ($count{alert}{'Non-Critical'} > 0) { $err = $E_WARNING;  }

    my $msg = sprintf 'Alert log content: %d critical, %d non-critical, %d ok',
      $count{alert}{'Critical'}, $count{alert}{'Non-Critical'}, $count{alert}{'Ok'};
    report('other', $msg, $err);

    return;
}

#-----------------------------------------
# CHASSIS: Check ESM log overall health
#-----------------------------------------
sub check_esmlog_health {
    my $health = 'Ok';

    if ($snmp) {
	my $systemStateEventLogStatus = '1.3.6.1.4.1.674.10892.1.200.10.1.41.1';
	my $result = $snmp_session->get_request(-varbindlist => [$systemStateEventLogStatus]);
	if (!defined $result) {
	    my $msg = sprintf 'SNMP ERROR [esmhealth]: %s',
	      $snmp_session->error;
	    report('other', $msg, $E_UNKNOWN);
	}
	$health = $snmp_status{$result->{$systemStateEventLogStatus}};
    }
    else {
	foreach (@{ run_command("$omreport $omopt_system esmlog -fmt ssv") }) {
	    if (m/\A Health;(.+) \z/xms) {
		$health = $1;
		chop $health;
		last;
	    }
	}
    }

    # If the overall health of the ESM log is other than "Ok", the
    # fill grade of the log is more than 80% and the log should be
    # cleared
    if ($health eq 'Ok') {
	my $msg = sprintf 'ESM log health is OK (less than 80%% full)';
	report('other', $msg, $E_OK);
    }
    elsif ($health eq 'Critical') {
	my $msg = sprintf 'ESM log is 100%% full!';
	report('other', $msg, $status2nagios{$health});
    }
    else {
	my $msg = sprintf 'ESM log is more than 80%% full';
	report('other', $msg, $status2nagios{$health});
    }

    return;
}

#-----------------------------------------
# CHASSIS: Check ESM log
#-----------------------------------------
sub check_esmlog {
    my @output = ();

    if ($snmp) {
	my %esm_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.300.40.1.7.1'  => 'eventLogSeverityStatus',
	    );
	my $result = $snmp_session->get_entries(-columns => [keys %esm_oid]);

	# No entries is OK
	return if !defined $result;

	@output = @{ get_snmp_output($result, \%esm_oid) };
	foreach my $out (@output) {
	    ++$count{esm}{$snmp_status{$out->{eventLogSeverityStatus}}};
	}
    }
    else {
	@output = @{ run_omreport("$omopt_system esmlog") };
	foreach my $out (@output) {
	    ++$count{esm}{$out->{Severity}};
	}
    }

    # Create error messages and set exit value if appropriate
    my $err = 0;
    if ($count{esm}{'Critical'} > 0)        { $err = $E_CRITICAL; }
    elsif ($count{esm}{'Non-Critical'} > 0) { $err = $E_WARNING;  }

    my $msg = sprintf 'ESM log content: %d critical, %d non-critical, %d ok',
      $count{esm}{'Critical'}, $count{esm}{'Non-Critical'}, $count{esm}{'Ok'};
    report('other', $msg, $err);

    return;
}

#
# Handy function for checking all storage components
#
sub check_storage {
    check_controllers();
    check_physical_disks();
    check_virtual_disks();
    check_cache_battery();
    check_connectors();
    check_enclosures();
    check_enclosure_fans();
    check_enclosure_pwr();
    check_enclosure_temp();
    check_enclosure_emms();
    return;
}



#---------------------------------------------------------------------
# Info functions
#---------------------------------------------------------------------

#
# Fetch output from 'omreport chassis info', put in sysinfo hash
#
sub get_omreport_chassis_info {
    if (open my $INFO, '-|', "$omreport $omopt_chassis info -fmt ssv") {
	my @lines = <$INFO>;
	close $INFO;
	foreach (@lines) {
	    next if !m/\A (Chassis\sModel|Chassis\sService\sTag|Model|Service\sTag)/xms;
	    my ($key, $val) = split /;/xms;
	    $key =~ s{\s+\z}{}xms; # remove trailing whitespace
	    $val =~ s{\s+\z}{}xms; # remove trailing whitespace
	    if ($key eq 'Chassis Model' or $key eq 'Model') {
		$sysinfo{model}  = $val;
	    }
	    if ($key eq 'Chassis Service Tag' or $key eq 'Service Tag') {
		$sysinfo{serial} = $val;
	    }
	}
    }
    return;
}

#
# Fetch output from 'omreport chassis bios', put in sysinfo hash
#
sub get_omreport_chassis_bios {
    if (open my $BIOS, '-|', "$omreport $omopt_chassis bios -fmt ssv") {
	my @lines = <$BIOS>;
	close $BIOS;
	foreach (@lines) {
	    next if !m/;/xms;
	    my ($key, $val) = split /;/xms;
	    $key =~ s{\s+\z}{}xms; # remove trailing whitespace
	    $val =~ s{\s+\z}{}xms; # remove trailing whitespace
	    $sysinfo{bios}     = $val if $key eq 'Version';
	    $sysinfo{biosdate} = $val if $key eq 'Release Date';
	}
    }
    return;
}

#
# Fetch output from 'omreport system operatingsystem', put in sysinfo hash
#
sub get_omreport_system_operatingsystem {
    if (open my $VER, '-|', "$omreport $omopt_system operatingsystem -fmt ssv") {
	my @lines = <$VER>;
	close $VER;
	foreach (@lines) {
	    next if !m/;/xms;
	    my ($key, $val) = split /;/xms;
	    $key =~ s{\s+\z}{}xms; # remove trailing whitespace
	    $val =~ s{\s+\z}{}xms; # remove trailing whitespace
	    if ($key eq 'Operating System') {
		$sysinfo{osname} = $val;
	    }
	    elsif ($key eq 'Operating System Version') {
		$sysinfo{osver}  = $val;
	    }
	}
    }
    return;
}

#
# Fetch output from 'omreport about', put in sysinfo hash
#
sub get_omreport_about {
    if (open my $OM, '-|', "$omreport about -fmt ssv") {
	my @lines = <$OM>;
	close $OM;
	foreach (@lines) {
	    if (m/\A Version;(.+) \z/xms) {
		$sysinfo{om} = $1;
		chomp $sysinfo{om};
	    }
	}
    }
    return;
}

#
# Fetch chassis info via SNMP, put in sysinfo hash
#
sub get_snmp_chassis_info {
    my %chassis_oid
      = (
	 '1.3.6.1.4.1.674.10892.1.300.10.1.9.1'  => 'chassisModelName',
	 '1.3.6.1.4.1.674.10892.1.300.10.1.11.1' => 'chassisServiceTagName',
	);

    my $chassisInformationTable = '1.3.6.1.4.1.674.10892.1.300.10.1';
    my $result = $snmp_session->get_table(-baseoid => $chassisInformationTable);

    if (defined $result) {
	foreach my $oid (keys %{ $result }) {
	    if (exists $chassis_oid{$oid} and $chassis_oid{$oid} eq 'chassisModelName') {
		$sysinfo{model} = $result->{$oid};
		$sysinfo{model} =~ s{\s+\z}{}xms; # remove trailing whitespace
	    }
	    elsif (exists $chassis_oid{$oid} and $chassis_oid{$oid} eq 'chassisServiceTagName') {
		$sysinfo{serial} = $result->{$oid};
	    }
	}
    }
    else {
	my $msg = sprintf 'SNMP ERROR getting chassis info: %s',
	  $snmp_session->error;
	report('other', $msg, $E_UNKNOWN);
    }
    return;
}

#
# Fetch BIOS info via SNMP, put in sysinfo hash
#
sub get_snmp_chassis_bios {
    my %bios_oid
      = (
	 '1.3.6.1.4.1.674.10892.1.300.50.1.7.1.1' => 'systemBIOSReleaseDateName',
	 '1.3.6.1.4.1.674.10892.1.300.50.1.8.1.1' => 'systemBIOSVersionName',
	);

    my $systemBIOSTable = '1.3.6.1.4.1.674.10892.1.300.50.1';
    my $result = $snmp_session->get_table(-baseoid => $systemBIOSTable);

    if (defined $result) {
	foreach my $oid (keys %{ $result }) {
	    if (exists $bios_oid{$oid} and $bios_oid{$oid} eq 'systemBIOSReleaseDateName') {
		$sysinfo{biosdate} = $result->{$oid};
		$sysinfo{biosdate} =~ s{\A (\d{4})(\d{2})(\d{2}).*}{$2/$3/$1}xms;
	    }
	    elsif (exists $bios_oid{$oid} and $bios_oid{$oid} eq 'systemBIOSVersionName') {
		$sysinfo{bios} = $result->{$oid};
	    }
	}
    }
    else {
	my $msg = sprintf 'SNMP ERROR getting BIOS info: %s',
	  $snmp_session->error;
	report('other', $msg, $E_UNKNOWN);
    }
    return;
}

#
# Fetch OS info via SNMP, put in sysinfo hash
#
sub get_snmp_system_operatingsystem {
    my %os_oid
      = (
	 '1.3.6.1.4.1.674.10892.1.400.10.1.6.1' => 'operatingSystemOperatingSystemName',
	 '1.3.6.1.4.1.674.10892.1.400.10.1.7.1' => 'operatingSystemOperatingSystemVersionName',
	);

    my $operatingSystemTable = '1.3.6.1.4.1.674.10892.1.400.10.1';
    my $result = $snmp_session->get_table(-baseoid => $operatingSystemTable);

    if (defined $result) {
	foreach my $oid (keys %{ $result }) {
	    if (exists $os_oid{$oid} and $os_oid{$oid} eq 'operatingSystemOperatingSystemName') {
		$sysinfo{osname} = ($result->{$oid});
	    }
	    elsif (exists $os_oid{$oid} and $os_oid{$oid} eq 'operatingSystemOperatingSystemVersionName') {
		$sysinfo{osver} = $result->{$oid};
	    }
	}
    }
    else {
	my $msg = sprintf 'SNMP ERROR getting OS info: %s',
	  $snmp_session->error;
	report('other', $msg, $E_UNKNOWN);
    }
    return;
}

#
# Fetch OMSA version via SNMP, put in sysinfo hash
#
sub get_snmp_about {
    my %omsa_oid
      = (
	 '1.3.6.1.4.1.674.10892.1.100.10.0' => 'systemManagementSoftwareGlobalVersionName',
	);
    my $systemManagementSoftwareGroup = '1.3.6.1.4.1.674.10892.1.100';
    my $result = $snmp_session->get_table(-baseoid => $systemManagementSoftwareGroup);
    if (defined $result) {
	foreach my $oid (keys %{ $result }) {
	    if (exists $omsa_oid{$oid} and $omsa_oid{$oid} eq 'systemManagementSoftwareGlobalVersionName') {
		$sysinfo{om} = ($result->{$oid});
	    }
	}
    }
    else {
	my $msg = sprintf 'SNMP ERROR getting OMSA info: %s',
	  $snmp_session->error;
	report('other', $msg, $E_UNKNOWN);
    }
    return;
}

#
# Collects some information about the system
#
sub get_sysinfo
{
    # Get system model and serial number
    $snmp ? get_snmp_chassis_info() : get_omreport_chassis_info();

    # Get BIOS information. Only if needed
    if ( $opt{okinfo} >= 1
	 or $opt{debug}
	 or (defined $opt{postmsg} and $opt{postmsg} =~ m/[%][bd]/xms) ) {
	$snmp ? get_snmp_chassis_bios() : get_omreport_chassis_bios();
    }

    # Return now if debug
    return if $opt{debug};

    # Get OS information. Only if needed
    if (defined $opt{postmsg} and $opt{postmsg} =~ m/[%][or]/xms) {
	$snmp ? get_snmp_system_operatingsystem() : get_omreport_system_operatingsystem();
    }

    # Get OMSA information. Only if needed
    if ($opt{okinfo} >= 3) {
	$snmp ? get_snmp_about() : get_omreport_about();
    }

    return;
}


# Helper function for running omreport when the results are strictly
# name=value pairs.
sub run_omreport_info {
    my $command = shift;
    my %output  = ();
    my @keys    = ();

    # Run omreport and fetch output
    my $rawtext = slurp_command("$omreport $command -fmt ssv 2>&1");

    # Parse output, store in array
    for ((split /\n/xms, $rawtext)) {
	if (m/\A Error/xms) {
	    my $msg = "Problem running 'omreport $command': $_";
	    report('other', $msg, $E_UNKNOWN);
	}
	next if !m/;/xms;  # ignore lines with less than two fields
	my @vals = split m/;/xms;
	$output{$vals[0]} = $vals[1];
    }

    # Finally, return the collected information
    return \%output;
}

# Get various firmware information (BMC, RAC)
sub get_firmware_info {
    my @snmp_output = ();
    my %nrpe_output = ();

    if ($snmp) {
	my %fw_oid
	  = (
	     '1.3.6.1.4.1.674.10892.1.300.60.1.7.1'  => 'firmwareType',
	     '1.3.6.1.4.1.674.10892.1.300.60.1.8.1'  => 'firmwareTypeName',
	     '1.3.6.1.4.1.674.10892.1.300.60.1.11.1' => 'firmwareVersionName',
	    );

	my $firmwareTable = '1.3.6.1.4.1.674.10892.1.300.60.1';
	my $result = $snmp_session->get_table(-baseoid => $firmwareTable);

	# Some don't have this OID, this is ok
	if (!defined $result) {
	    return;
	}

	@snmp_output = @{ get_snmp_output($result, \%fw_oid) };
    }
    else {
	%nrpe_output = %{ run_omreport_info("$omopt_chassis info") };
    }

    my %fw_type  # Firmware types
      = (
	 1  => 'other',                              # other than following values
	 2  => 'unknown',                            # unknown
	 3  => 'systemBIOS',                         # System BIOS
	 4  => 'embeddedSystemManagementController', # Embedded System Management Controller
	 5  => 'powerSupplyParallelingBoard',        # Power Supply Paralleling Board
	 6  => 'systemBackPlane',                    # System (Primary) Backplane
	 7  => 'powerVault2XXSKernel',               # PowerVault 2XXS Kernel
	 8  => 'powerVault2XXSApplication',          # PowerVault 2XXS Application
	 9  => 'frontPanel',                         # Front Panel Controller
	 10 => 'baseboardManagementController',      # Baseboard Management Controller
	 11 => 'hotPlugPCI',                         # Hot Plug PCI Controller
	 12 => 'sensorData',                         # Sensor Data Records
	 13 => 'peripheralBay',                      # Peripheral Bay Backplane
	 14 => 'secondaryBackPlane',                 # Secondary Backplane for ESM 2 systems
	 15 => 'secondaryBackPlaneESM3And4',         # Secondary Backplane for ESM 3 and 4 systems
	 16 => 'rac',                                # Remote Access Controller
	 17 => 'imc'                                 # Integrated Management Controller
	);


    if ($snmp) {
	foreach my $out (@snmp_output) {
	    if ($fw_type{$out->{firmwareType}} eq 'baseboardManagementController') {
		$sysinfo{'bmc'} = 1;
		$sysinfo{'bmc_fw'} = $out->{firmwareVersionName};
	    }
	    elsif ($fw_type{$out->{firmwareType}} =~ m{\A rac|imc \z}xms) {
		my $name = $out->{firmwareTypeName}; $name =~ s/\s//gxms;
		$sysinfo{'rac'} = 1;
		$sysinfo{'rac_name'} = $name;
		$sysinfo{'rac_fw'} = $out->{firmwareVersionName};
	    }
	}
    }
    else {
	foreach my $key (keys %nrpe_output) {
	    next if !defined $nrpe_output{$key};
	    if ($key eq 'BMC Version' or $key eq 'Baseboard Management Controller Version') {
		$sysinfo{'bmc'} = 1;
		$sysinfo{'bmc_fw'} = $nrpe_output{$key};
	    }
	    elsif ($key =~ m{\A (i?DRAC)\s*(\d?)\s+Version}xms) {
		my $name = "$1$2";
		$sysinfo{'rac'} = 1;
		$sysinfo{'rac_fw'} = $nrpe_output{$key};
		$sysinfo{'rac_name'} = $name;
	    }
	}
    }

    return;
}



#=====================================================================
# Main program
#=====================================================================

# Here we do the actual checking of components
# Check global status if applicable
if ($global) {
    $globalstatus = check_global();
}

# Do multiple selected checks
if ($check{storage})     { check_storage();       }
if ($check{memory})      { check_memory();        }
if ($check{fans})        { check_fans();          }
if ($check{power})       { check_powersupplies(); }
if ($check{temp})        { check_temperatures();  }
if ($check{cpu})         { check_processors();    }
if ($check{voltage})     { check_volts();         }
if ($check{batteries})   { check_batteries();     }
if ($check{amperage})    { check_pwrmonitoring(); }
if ($check{intrusion})   { check_intrusion();     }
if ($check{alertlog})    { check_alertlog();      }
if ($check{esmlog})      { check_esmlog();        }
if ($check{esmhealth})   { check_esmlog_health(); }


#---------------------------------------------------------------------
# Finish up
#---------------------------------------------------------------------

# Counter variable
%nagios_alert_count
  = (
     'OK'       => 0,
     'WARNING'  => 0,
     'CRITICAL' => 0,
     'UNKNOWN'  => 0,
    );

# Get system information
get_sysinfo();

# Get firmware info if requested via option
if ($opt{okinfo} >= 1) {
    get_firmware_info();
}

# Close SNMP session
if ($snmp) {
    $snmp_session->close;
}

# Print messages
if ($opt{debug}) {
    print "   System:      $sysinfo{model}\n";
    print "   ServiceTag:  $sysinfo{serial}\n";
    print "   BIOS/date:   $sysinfo{bios} $sysinfo{biosdate}\n";
    if ($#report_storage >= 0) {
	print "-----------------------------------------------------------------------------\n";
	print "   Storage Components                                                        \n";
	print "=============================================================================\n";
	print "  STATE  |    ID    |  MESSAGE TEXT                                          \n";
	print "---------+----------+--------------------------------------------------------\n";
	foreach (@report_storage) {
	    my ($msg, $level, $nexus) = @{$_};
	    print q{ } x (8 - length $reverse_exitcode{$level}) . "$reverse_exitcode{$level} | "
	      . q{ } x (8 - length $nexus) . "$nexus | $msg\n";
	    $nagios_alert_count{$reverse_exitcode{$level}}++;
	}
    }
    if ($#report_chassis >= 0) {
	print "-----------------------------------------------------------------------------\n";
	print "   Chassis Components                                                        \n";
	print "=============================================================================\n";
	print "  STATE  |  ID  |  MESSAGE TEXT                                          \n";
	print "---------+------+------------------------------------------------------------\n";
	foreach (@report_chassis) {
	    my ($msg, $level, $nexus) = @{$_};
	    print q{ } x (8 - length $reverse_exitcode{$level}) . "$reverse_exitcode{$level} | "
	      . q{ } x (4 - length $nexus) . "$nexus | $msg\n";
	    $nagios_alert_count{$reverse_exitcode{$level}}++;
	}
    }
    if ($#report_other >= 0) {
	print "-----------------------------------------------------------------------------\n";
	print "   Other messages                                                            \n";
	print "=============================================================================\n";
	print "  STATE  |  MESSAGE TEXT                                                     \n";
	print "---------+-------------------------------------------------------------------\n";
	foreach (@report_other) {
	    my ($msg, $level, $nexus) = @{$_};
	    print q{ } x (8 - length $reverse_exitcode{$level}) . "$reverse_exitcode{$level} | $msg\n";
	    $nagios_alert_count{$reverse_exitcode{$level}}++;
	}
    }
}
else {
    my $c = 0;  # counter to determine linebreaks

    # Run through each message, sorted by severity level
  ALERT:
    foreach (sort {$a->[1] < $b->[1]} (@report_storage, @report_chassis, @report_other)) {
	my ($msg, $level, $nexus) = @{ $_ };
	next ALERT if $level == $E_OK;

	if (defined $opt{only}) {
	    # If user wants only critical alerts
	    next ALERT if ($opt{only} eq 'critical' and $level == $E_WARNING);

	    # If user wants only warning alerts
	    next ALERT if ($opt{only} eq 'warning' and $level == $E_CRITICAL);
	}

	# Prefix with service tag if specified with option '-i|--info'
	if ($opt{info}) {
	    if (defined $opt{htmlinfo}) {
		$msg = '[<a href="' . warranty_url($sysinfo{serial})
		  . "\">$sysinfo{serial}</a>] " . $msg;
	    }
	    else {
		$msg = "[$sysinfo{serial}] " . $msg;
	    }
	}

	# Prefix with nagios level if specified with option '--state'
	$msg = $reverse_exitcode{$level} . ": $msg" if $opt{state};

	# Prefix with one-letter nagios level if specified with option '--short-state'
	$msg = (substr $reverse_exitcode{$level}, 0, 1) . ": $msg" if $opt{shortstate};

	($c++ == 0) ? print $msg : print $linebreak, $msg;

	$nagios_alert_count{$reverse_exitcode{$level}}++;
    }
}

# Determine our exit code
$exit_code = $E_OK;
$exit_code = $E_UNKNOWN  if $nagios_alert_count{'UNKNOWN'} > 0;
$exit_code = $E_WARNING  if $nagios_alert_count{'WARNING'} > 0;
$exit_code = $E_CRITICAL if $nagios_alert_count{'CRITICAL'} > 0;

# Global status via SNMP.. extra safety check
if ($globalstatus != $E_OK && $exit_code == $E_OK && !defined $opt{only}) {
    print "OOPS! Something is wrong with this server, but I don't know what. ";
    print "The global system health status is $reverse_exitcode{$globalstatus}, ";
    print "but every component check is OK. This may be a bug in the Nagios plugin, ";
    print "please file a bug report.\n";
    exit $E_UNKNOWN;
}

# Print OK message
if ($exit_code == $E_OK && defined $opt{only} && $opt{only} !~ m{\A critical|warning|chassis \z}xms && !$opt{debug}) {
    my %okmsg
      = ( 'storage'     => "STORAGE OK - $count{pdisk} physical drives, $count{vdisk} logical drives",
	  'fans'        => $count{fan} == 0 && $blade ? 'OK - blade system with no fan probes' : "FANS OK - $count{fan} fan probes checked",
	  'temp'        => "TEMPERATURES OK - $count{temp} temperature probes checked",
	  'memory'      => "MEMORY OK - $count{dimm} memory modules checked",
	  'power'       => $count{power} == 0 ? 'OK - no instrumented power supplies found' : "POWER OK - $count{power} power supplies checked",
	  'cpu'         => "PROCESSORS OK - $count{cpu} processors checked",
	  'voltage'     => "VOLTAGE OK - $count{volt} voltage probes checked",
	  'batteries'   => $count{bat} == 0 ? 'OK - no batteries found' : "BATTERIES OK - $count{bat} batteries checked",
	  'amperage'    => $count{amp} == 0 ? 'OK - no power monitoring probes found' : "AMPERAGE OK - $count{amp} amperage (power monitoring) probes checked",
	  'intrusion'   => $count{intr} == 0 ? 'OK - no intrusion detection probes found' : "INTRUSION OK - $count{intr} intrusion detection probes checked",
	  'alertlog'    => $snmp ? 'OK - not supported via snmp' : "OK - Alert Log content: $count{alert}{Ok} ok, $count{alert}{'Non-Critical'} warning and $count{alert}{Critical} critical",
	  'esmlog'      => "OK - ESM Log content: $count{esm}{Ok} ok, $count{esm}{'Non-Critical'} warning and $count{esm}{Critical} critical",
	  'esmhealth'   => "ESM LOG OK - less than 80% used",
	);

    print $okmsg{$opt{only}};
}
elsif ($exit_code == $E_OK && !$opt{debug}) {
    if (defined $opt{htmlinfo}) {
	printf q{OK - System: '<a href="%s">%s</a>', SN: '<a href="%s">%s</a>', hardware working fine},
	  documentation_url($sysinfo{model}), $sysinfo{model},
	    warranty_url($sysinfo{serial}), $sysinfo{serial};
    }
    else {
	printf q{OK - System: '%s', SN: '%s', hardware working fine},
	  $sysinfo{model}, $sysinfo{serial};
    }

    if ($check{storage}) {
	printf ', %d logical drives, %d physical drives',
	  $count{vdisk}, $count{pdisk};
    }
    else {
	print ', not checking storage';
    }

    if ($opt{okinfo} >= 1) {
	print $linebreak;
	printf q{----- BIOS='%s %s'}, $sysinfo{bios}, $sysinfo{biosdate};

	if ($sysinfo{rac}) {
	    printf q{, %s='%s'}, $sysinfo{rac_name}, $sysinfo{rac_fw};
	}
	if ($sysinfo{bmc}) {
	    printf q{, BMC='%s'}, $sysinfo{bmc_fw};
	}
    }

    if ($opt{okinfo} >= 2) {
	if ($check{storage}) {
	    my @storageprint = ();
	    foreach my $id (sort keys %{ $sysinfo{controller} }) {
		chomp $sysinfo{controller}{$id}{driver};
		push @storageprint, sprintf q{----- CTRL %s (%s): FW='%s', DR='%s'},
		  $sysinfo{controller}{$id}{id}, $sysinfo{controller}{$id}{name},
		    $sysinfo{controller}{$id}{firmware}, $sysinfo{controller}{$id}{driver};
	    }
	    foreach my $id (sort keys %{ $sysinfo{enclosure} }) {
		push @storageprint, sprintf q{----- ENCL %s (%s): FW='%s'},
		  $sysinfo{enclosure}{$id}->{id}, $sysinfo{enclosure}{$id}->{name},
		    $sysinfo{enclosure}{$id}->{firmware};
	    }

	    # print stuff
	    foreach my $line (@storageprint) {
		print $linebreak, $line;
	    }
	}
    }

    if ($opt{okinfo} >= 3) {
	print "$linebreak----- OpenManage Server Administrator (OMSA) version: '$sysinfo{om}'";
    }

}
else {
    if ($opt{extinfo}) {
	print $linebreak;
	if (defined $opt{htmlinfo}) {
	    printf '------ SYSTEM: <a href="%s">%s</a>, SN: <a href="%s">%s</a>',
	      documentation_url($sysinfo{model}), $sysinfo{model},
		warranty_url($sysinfo{serial}), $sysinfo{serial};
	}
	else {
	    printf '------ SYSTEM: %s, SN: %s',
	      $sysinfo{model}, $sysinfo{serial};
	}
    }
    if (defined $opt{postmsg}) {
	my $post = undef;
	if (-f $opt{postmsg}) {
	    open my $POST, '<', $opt{postmsg}
	      or ( print $linebreak
		   and print "ERROR: Couldn't open post message file $opt{postmsg}: $!\n"
		   and exit $E_UNKNOWN );
	    $post = <$POST>;
	    close $POST;
	    chomp $post;
	}
	else {
	    $post = $opt{postmsg};
	}
	if (defined $post) {
	    print $linebreak;
	    $post =~ s{[%]s}{$sysinfo{serial}}gxms;
	    $post =~ s{[%]m}{$sysinfo{model}}gxms;
	    $post =~ s{[%]b}{$sysinfo{bios}}gxms;
	    $post =~ s{[%]d}{$sysinfo{biosdate}}gxms;
	    $post =~ s{[%]o}{$sysinfo{osname}}gxms;
	    $post =~ s{[%]r}{$sysinfo{osver}}gxms;
	    $post =~ s{[%]p}{$count{pdisk}}gxms;
	    $post =~ s{[%]l}{$count{vdisk}}gxms;
	    $post =~ s{[%]n}{$linebreak}gxms;
	    $post =~ s{[%]{2}}{%}gxms;
	    print $post;
	}
    }
}

# Print performance data
if (defined $opt{perfdata} && !$opt{debug} && %perfdata) {
    my $lb = $opt{perfdata} eq 'multiline' ? "\n" : q{ };  # line break for perfdata
    print q{|};

    sub perfdata {
	my %order
	  = (
	     fan       => 0,
	     pwr       => 1,
	     temp      => 2,
	     enclosure => 3,
	    );
	return ($order{(split /_/, $a, 2)[0]} cmp $order{(split /_/, $b, 2)[0]}) || $a cmp $b;
    }

    print join $lb, map { "'$_'=$perfdata{$_}" } sort perfdata keys %perfdata;
}

# Print a linebreak at the end
print "\n" if !$opt{debug};

# Exit with proper exit code
exit $exit_code;