#!/usr/bin/perl

use strict;
use IO::Socket;
use Convert::BER;
use Convert::BER qw(/^(\$|BER_)/);

    my @traptypes = ("COLDSTART", "WARMSTART", "LINKDOWN", "LINKUP", "AUTHFAIL", "EGPNEIGHBORLOSS", "ENTERPRISESPECIFIC");
    my %trap;

    my $sock = IO::Socket::INET->new(LocalPort => '162',
                                         Proto => 'udp'
                                    ) || die "Cannot open port";

    my $ber = new Convert::BER;

    $ber->define(
                 [ Trap_PDU              => $SEQUENCE,      BER_CONTEXT | BER_CONSTRUCTOR     | 0x04 ],
                 [ IpAddress             => $STRING,        BER_APPLICATION                   | 0x00 ],
                 [ Counter               => $INTEGER,       BER_APPLICATION                   | 0x01 ],
                 [ Gauge                 => $INTEGER,       BER_APPLICATION                   | 0x02 ],
                 [ TimeTicks             => $INTEGER,       BER_APPLICATION                   | 0x03 ],
                 [ Opaque                => undef,          BER_APPLICATION                   | 0x04 ]
                );

    my $buf;
    while (1) {

        $sock->recv($buf, 1500);
        my ($port, $ipaddr) = sockaddr_in($sock->peername);

        my $host = inet_ntoa($ipaddr);

        $ber->buffer($buf);
        $ber->decode(
                     SEQUENCE => [
                                  INTEGER => \$trap{'version'},
                                   STRING => \$trap{'community'},
                                 Trap_PDU => [
                                              OBJECT_ID  => \$trap{'ent_OID'},
                                               IpAddress => \$trap{'agentaddr'},
                                                 INTEGER => \$trap{'generic_trap'},
                                                 INTEGER => \$trap{'specific_trap'},
                                               TimeTicks => \$trap{'timeticks'},
                                                SEQUENCE => [
                                                             ANY => \$trap{'ber_varbindlist'}
                                                            ],
                                             ],
                                 ]
                    );

        my $p = sprintf "%s\t%i\t%i\t%s\t%s\t%s\t%s\t%s\t%s\t", $host, $port, $trap{'version'}, $trap{'community'}, $trap{'ent_OID'}, inet_ntoa($trap{'agentaddr'}), $traptypes[$trap{'generic_trap'}], $trap{'specific_trap'}, $trap{'timeticks'};

# This is the value I need to expand
print "varbind = $trap{'ber_varbindlist'}\n";

        # This is how I'm trying to do it
        my %varbind;
        my ($oid, $val);
        foreach my $i (@{$trap{'ber_varbindlist'}}) {


            $ber->buffer($i);
            $ber->decode(
                         SEQUENCE => [
                                      OBJECT_ID => \$oid,
                                            ANY => \$val,
                                     ]
                        );
            $varbind{$oid} = $val
        }

# This is dumping what I've expanded, but it isn't correct
use Data::Dumper;
print Dumper(%varbind);

        print "$p\n"
    }