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#!/usr/bin/perl -T
# $RedRiver: check_bioctl,v 1.5 2009/11/09 17:57:32 andrew Exp $
########################################################################
# check_bioctl *** A nagios check for OpenBSD bioctl
# 
# 2006.07.26 #*#*# andrew fresh <andrew@mad-techies.org>
########################################################################
# TODO: 
#   Really need real documentation.
########################################################################
use strict;
use warnings;

%ENV = ();

use constant NAGIOS_OUTPUT => 1;

use POSIX;
use lib "/usr/local/libexec/nagios";
use utils qw($TIMEOUT %ERRORS &print_revision &support);

use Getopt::Long;
Getopt::Long::Configure('bundling');

my $PROGNAME = "check_bioctl";
my $BIOCTL = '/sbin/bioctl';

# This maps the status we get from bioctl to something nagios can use
my %Status_Map = (
	Online      => 'OK',
	Offline     => 'CRITICAL',
	Degraded    => 'CRITICAL',
	Failed      => 'CRITICAL',
	Building    => 'WARNING',
	Rebuild     => 'WARNING',
	'Hot spare' => 'OK',
	Unused      => 'OK',
	Scrubbing   => 'WARNING',
	Invalid     => 'CRITICAL',
);


my $state = 'UNKNOWN'; # tells whether the it is warning, critical, or OK
my %states; # This stores the count of states;
my @devices;
my $opt_h;
my $opt_V;

#Option checking
my $status = GetOptions(
	"version|V"    => \$opt_V,
	"help|h"       => \$opt_h,
	"device|d=s"   => \@devices,
);

if ($status == 0) {
	print_help() ;
	exit $ERRORS{'OK'};
}

if ($opt_V) {
	print_revision($PROGNAME,'$Revision: 1.6 $ ');
	exit $ERRORS{'OK'};
}

if ($opt_h || not @devices) {
	print_help();
	exit $ERRORS{'OK'};
}

my %VOLUMES;
foreach my $device (@devices) {
	open my $bioctl, "-|", $BIOCTL, $device or die "Couldn't open bioctl: $!";
	my $volume_id;

	while (<$bioctl>) {
		chomp;
		# Do these by columns cuZ that is the easiest for now
		my @o = unpack("A6 A1 A11 A15 A7 A9 A*",  $_);
		next if $o[0] eq 'Volume';

		foreach (@o) {
			s/^\s+//;
			s/\s+$//;
		}

		my ($controller, $id, $status, $size, $dev, $details, $name) = @o;
		my $index = $id;
		if ($controller) {
			$volume_id  = $id;
		} else {
			$index = "$volume_id.$id";
		}

		$VOLUMES{$device}{$index} = {
			type       => 'volume',
			controller => $controller,
			id         => $id,
			status     => $status,
			size       => $size,
			device     => $dev,
			details    => $details,
			name       => $name,
		};

		if ($dev =~ /^\d+:\d+/) {
			$VOLUMES{$device}{$index}{'volume'} =
				$VOLUMES{$device}{$volume_id};
		}

	}
	close $bioctl;
}

foreach my $device (sort keys %VOLUMES) {
	foreach my $index (sort keys %{ $VOLUMES{$device} }) {
		my $cur_state = $Status_Map{ $VOLUMES{$device}{$index}{'status'} } ?
			$Status_Map{ $VOLUMES{$device}{$index}{'status'} } :
			'UNKNOWN';

		if ($VOLUMES{$device}{$index}{'device'} =~ /^\d+:\d/) {
			push @{ $states{$cur_state} }, sprintf("%5s %-7s %-11s %s",
				$VOLUMES{$device}{$index}{'volume'}{'controller'},
				$VOLUMES{$device}{$index}{'device'},
				$VOLUMES{$device}{$index}{'status'},
				$VOLUMES{$device}{$index}{'name'}
			);
		} else {
			push @{ $states{$cur_state} }, sprintf("%5s %-7s %s",
				$VOLUMES{$device}{$index}{'controller'},
				$VOLUMES{$device}{$index}{'device'},
				$VOLUMES{$device}{$index}{'status'}
			);
		}
	}
}

my $have_results = 0;
foreach my $error (sort { $ERRORS{$b} <=> $ERRORS{$a} } keys %ERRORS) {
	if (exists $states{$error}) {
		$have_results++;
        $state = $error if $ERRORS{$state} < $ERRORS{$error};

		if (NAGIOS_OUTPUT) {
			print "$error (" . scalar(@{ $states{ $error } }) . ")";
			unless ($error eq 'OK') {
				print '<br>';
				print map { " - $_<br>" } @{ $states{ $error } };
			}
		} else {
			print "$error (" . scalar(@{ $states{ $error } }) . "):\n";
			print map { "    $_\n" } @{ $states{ $error } };
		}
	}
}
if ($have_results == 0) {
	print "No results found\n";
}
exit $ERRORS{$state};

sub print_help {
	print <<EOL;
$PROGNAME plugin for Nagios monitors bioctl on OpenBSD
    $PROGNAME -d <device> [ -d <device2> [ -d ... ] ]

Usage:
    -d, --device=DEVICE
        DEVICE to check.  Can be any device that bioctl(8) accepts
    -h (--help)       usage help
	-V (--version)    version information

EOL
	
	print_revision($PROGNAME, '$Revision: 1.6 $');
}