#!/usr/bin/perl

use strict;

use Net::SNMP;

exit if (!$ARGV[0]);

my $TIMEOUT = 30;
$SIG{ALRM} = sub { print "ERROR: No response\n"; exit 3; };
alarm($TIMEOUT);

my $hostip=$ARGV[0];

my ($session, $error) = Net::SNMP->session(
   -hostname  => shift || $hostip,
   -community => shift || 'public',
   -timeout   => 5,
   -port      => shift || 161 
);

if (!defined($session)) {
   printf("ERROR: %s.\n", $error);
   exit 1;
}

my $inputac = '1.3.6.1.4.1.318.1.1.1.3.2.2.0';

my $result = $session->get_request(
   -varbindlist => [$inputac]
);

my $perf_data = "input=0;210;200;0;280;";
if (!defined($result)) {
   printf("ERROR: %s. |".$perf_data."\n", $session->error);
   $session->close;
   exit 2;
   }

$perf_data = "input=%s;210;200;0;280;";

if (($result->{$inputac} < 201) or $result->{$inputac} > 255) {
   printf("ERROR Input AC: %sV |".$perf_data."\n",$result->{$inputac},$result->{$inputac});
   $session->close;
   exit 2;
   }

printf("OK Input AC %sV |".$perf_data."\n", $result->{$inputac},$result->{$inputac});
$session->close;

exit 0;