# SNMP::Info::Layer3::Aironet
# Max Baker <max@warped.org>
#
# Copyright (c) 2002, Regents of the University of California
# All rights reserved.
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# modification, are permitted provided that the following conditions are met:
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package SNMP::Info::Layer3::Aironet;
$VERSION = 0.1;

use strict;

use Exporter;
use SNMP::Info::Layer3;

use vars qw/$VERSION $DEBUG %MIBS %FUNCS %GLOBALS %MUNGE $INIT/;
@SNMP::Info::Layer3::Aironet::ISA = qw/SNMP::Info::Layer3 Exporter/;
@SNMP::Info::Layer3::Aironet::EXPORT_OK = qw//;

$DEBUG=0;
$SNMP::debugging=$DEBUG;

$INIT = 0;
%MIBS =    (
            %SNMP::Info::Layer3::MIBS,
            'AWCVX-MIB'        => 'awcIfTable',
            'IEEE802dot11-MIB' => 'dot11StationID',
           );

%GLOBALS = (
            %SNMP::Info::Layer3::GLOBALS,
            'mac'               => 'dot11StationID.2',
            # AWC Ethernet Table
            'awc_duplex'        => 'awcEtherDuplex.0',
           );

%FUNCS = (  
            %SNMP::Info::Layer3::FUNCS,
            'i_mac2'    => 'ifPhysAddress',
            'i_mtu2'    => 'ifMtu',
            'i_ssid'    => 'dot11DesiredSSID',
            # Bridge-mib overrides  
            'fw_mac2'    => 'dot1dTpFdbAddress',
            'fw_port2'   => 'dot1dTpFdbPort',
            'bp_index2'  => 'dot1dBasePortIfIndex',
            # AWC Interface Table (awcIfTable)
            'awc_default_mac'   => 'awcIfDefaultPhyAddress',
            'awc_mac'           => 'awcIfPhyAddress',
            'awc_ip'            => 'awcIfIpAddress',
            'awc_netmask'       => 'awcIfIpNetMask',
            'awc_msdu'           => 'awcIfMSDUMaxLength',
          );

%MUNGE = (
          # Inherit all the built in munging
          %SNMP::Info::Layer3::MUNGE,
          'i_mac2'      => \&SNMP::Info::munge_mac,
          'awc_mac'     => \&SNMP::Info::munge_mac,
          'fw_mac2'     => \&SNMP::Info::munge_mac,
         );

# Override wireless port with static info
sub bp_index {
    my $aironet = shift;
    my $interfaces = $aironet->interfaces();
    my $bp_index = $aironet->bp_index2();
    
    foreach my $iid (keys %$interfaces){
        my $port = $interfaces->{$iid};

        # Hardwire the wireless port to the transparent bridge port
        if ($port =~ /awc/){
            $bp_index->{0}=$iid;
        }
    }
    
    return $bp_index;
}

# Add the static table to the forwarding table
sub fw_mac {
    my $aironet = shift;
    my $fw_mac  = $aironet->fw_mac2();
    my $fw_port = $aironet->fw_port2();
    my $bs_mac  = $aironet->bs_mac();    
 
    # remove port 0 forwarding table entries, only port 0 static entries
    foreach my $fw (keys %$fw_mac){
        my $port = $fw_port->{$fw};
        delete $fw_mac->{$fw} if $port == 0;
    }

    foreach my $bs (keys %$bs_mac){
        $fw_mac->{$bs} = $bs_mac->{$bs};
    }

    return $fw_mac;
}

# Add the static table to the forwarding table
sub fw_port {
    my $aironet = shift;
    my $fw_port = $aironet->fw_port2();
    my $bs_port = $aironet->bs_port();    


    foreach my $bs (keys %$bs_port){
        $fw_port->{$bs} = $bs_port->{$bs};
    }

    return $fw_port;
}


sub i_duplex {
    my $aironet = shift;
    my $interfaces = $aironet->interfaces();
    my $awc_duplex = $aironet->awc_duplex();
    
    my %i_duplex;

    foreach my $iid (keys %$interfaces){
        my $name = $interfaces->{$iid};

        if ($name =~ /fec/){
            $i_duplex{$iid} = $awc_duplex;
        }
    }

    return \%i_duplex;
}

sub i_mac {
    my $aironet = shift;

    my $i_mac   = $aironet->i_mac2();
    my $awc_mac = $aironet->awc_mac();

    foreach my $iid (keys %$awc_mac){
        next unless defined $i_mac->{$iid};
        $i_mac->{$iid} = $awc_mac->{$iid};
    }

    return $i_mac;
}

sub i_ignore {
    my $aironet = shift;
    my $interfaces = $aironet->interfaces();

    my %i_ignore;
    foreach my $if (keys %$interfaces){
        $i_ignore{$if}++ if ($interfaces->{$if} =~ /(rptr|lo)/);
    }
    
    return \%i_ignore;
}

sub vendor {
    return 'cisco';
}

1;
__END__


=head1 NAME

SNMP::Info::Layer3::Aironet - Perl5 Interface to Cisco Aironet Wireless Devices

=head1 DESCRIPTION

Inherits all methods from SNMP::Info::Layer3

=head1 AUTHOR

Max Baker (C<max@warped.org>)

=head1 SYNOPSIS

 my $aironet = new SNMP::Info::Layer3::Aironet(DestHost  => 'myswitch',
                               Community => 'public');
 my $mac = $aironet->mac(); 

=head1 CREATING AN OBJECT

=over

=item  new SNMP::Info::Layer3::Aironet()

Arguments passed to new() are passed on to SNMP::Session::new()
    

    my $aironet = new SNMP::Info::Layer3::Aironet(
        DestHost => $host,
        Community => 'public',
        Version => 3,...
        ) 
    die "Couldn't connect.\n" unless defined $aironet;

=item  $aironet->session()

Sets or returns the SNMP::Session object

    # Get
    my $sess = $aironet->session();

    # Set
    my $newsession = new SNMP::Session(...);
    $aironet->session($newsession);

=back

=head1 Globals

=over

=item $aironet->mac()

Gives the MAC Address of the wireless side 

B<dot11StationID.2>

=item $aironet->awc_duplex()

Gives the admin duplex setting for the Ethernet Port.

B<awcEtherDuplex.0>

=item $aironet->vendor()

Returns 'cisco'.

=back

=head1 TABLE ENTRIES

=head2 Aironet specific items

=over

=item  $aironet->awc_default_mac()

Gives the default MAC address of each interface.

B<awcIfDefaultPhyAddress>

=item $aironet->awc_mac()

Gives the actual MAC address of each interface.

B<awcIfPhyAddress>

=item $aironet->awc_ip()

Gives the IP Address assigned to each interface.

B<awcIfIpAddress>

=item $aironet->awc_netmask()

Gives the NetMask for each interface.

B<awcIfIpNetMask>

=item $aironet->awc_msdu()

B<awcIfMSDUMaxLength>

=back

=head2 Overrides

=over

=item $aironet->bp_index()

Takes the bp_index() value from SNMP::Info::Bridge and overrides the wireless port 
to be assigned to the transparent bridge port (port 0)

=item $aironet->fw_mac()

Adds static table entries from bs_mac() to port 0 so that wireless MAC addresses will
be reported.  Forwarding table entries for port 0 are removed.

=item $aironet->fw_port()

Adds the static table port mappings to the forwarding table port mappings by adding 
bs_port() to fw_port()

=item $aironet->i_duplex()

Adds the value of awc_duplex() to each Ethernet port seen.

=item $aironet->i_mac()

Overrides the values for i_mac with the value from awc_mac() if they are set.

=item $aironet->i_ignore()

Ignores ports that are of type ``rptr'' and ``lo''.

=back

=cut