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# SNMP::Info::Layer3::CiscoFWSM
# $Id$
#
# Copyright (c) 2010 Brian De Wolf
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of the University of California, Santa Cruz nor the
#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
package SNMP::Info::Layer3::CiscoFWSM;
use strict;
use warnings;
use Exporter;
use SNMP::Info::CiscoStats;
use SNMP::Info::Layer3;
@SNMP::Info::Layer3::CiscoFWSM::ISA = qw/SNMP::Info::CiscoStats
        SNMP::Info::Layer3
        Exporter/;
@SNMP::Info::Layer3::CiscoFWSM::EXPORT_OK = qw//;
our ($VERSION, %GLOBALS, %MIBS, %FUNCS, %MUNGE);
$VERSION = '3.67';
%MIBS = ( %SNMP::Info::Layer3::MIBS, %SNMP::Info::CiscoStats::MIBS, );
%GLOBALS
        = ( %SNMP::Info::Layer3::GLOBALS, %SNMP::Info::CiscoStats::GLOBALS, );
%FUNCS = (
        %SNMP::Info::Layer3::FUNCS,
        %SNMP::Info::CiscoStats::FUNCS,
);
%MUNGE = ( %SNMP::Info::Layer3::MUNGE, %SNMP::Info::CiscoStats::MUNGE, );
# For FWSMs, the ipNetToPhysicalPhysAddress table appears to be of the form:
# $ifindex.$inetaddresstype.$proto.$ip_address -> $mac_address
#
# Using the output of ipNetToPhysicalPhysAddress, we can emulate the other
# functions.
#
# This doesn't really line up to what at_* return, so we munge it
sub at_paddr {
        my ($fwsm)    = shift;
        my ($partial) = shift;
        my $paddrs   = $fwsm->n2p_paddr($partial);
        my $n_paddrs = {};
        foreach my $key ( keys %$paddrs ) {
                my $paddr = $paddrs->{$key};
                my @parts = split /\./, $key;
                my ( $ifindex, $addrtype, $proto ) = splice @parts, 0, 3;
                my $ip = join ".", @parts;
                next if ( $proto != 4 );    # at_paddr doesn't support non-IPv4
                $n_paddrs->{"$ifindex.$ip"} = $paddr;
        }
        return $n_paddrs;
}
sub at_netaddr {
        my ($fwsm)    = shift;
        my ($partial) = shift;
        my $paddrs = $fwsm->n2p_paddr($partial);
        my $netaddrs = {};
        foreach my $key ( keys %$paddrs ) {
                my $paddr = $paddrs->{$key};
                my @parts = split /\./, $key;
                my ( $ifindex, $addrtype, $proto ) = splice @parts, 0, 3;
                my $ip = join ".", @parts;
                next if ( $proto != 4 );    # at_netaddr doesn't support non-IPv4
                $netaddrs->{"$ifindex.$ip"} = $ip;
        }
        return $netaddrs;
}
sub at_ifaddr {
        my ($fwsm)    = shift;
        my ($partial) = shift;
        my $paddrs = $fwsm->n2p_paddr($partial);
        my $ifaddrs = {};
        foreach my $key ( keys %$paddrs ) {
                my $paddr = $paddrs->{$key};
                my @parts = split /\./, $key;
                my ( $ifindex, $addrtype, $proto ) = splice @parts, 0, 3;
                my $ip = join ".", @parts;
                next if ( $proto != 4 );    # at_ifaddr doesn't support non-IPv4
                $ifaddrs->{"$ifindex.$ip"} = $ip;
        }
        return $ifaddrs;
}
1;
__END__
HideShow 97 lines of Pod
=head1 NAME
SNMP::Info::Layer3::CiscoFWSM - SNMP Interface to Firewall Services Modules
for features not covered elsewhere.
=head1 AUTHOR
Brian De Wolf
=head1 SYNOPSIS
 # Let SNMP::Info determine the correct subclass for you.
 my $fwsm = new SNMP::Info(
                                                AutoSpecify => 1,
                                                Debug       => 1,
                                                # These arguments are passed directly to SNMP::Session
                                                DestHost    => 'myswitch',
                                                Community   => 'public',
                                                Version     => 2
                                                )
        or die "Can't connect to DestHost.\n";
 my $class      = $fwsm->class();
 print "SNMP::Info determined this device to fall under subclass : $class\n";
=head1 DESCRIPTION
Subclass for Cisco Firewall Services Modules
=head2 Inherited Classes
=over
=item SNMP::Info::CiscoStats
=item SNMP::Info::Layer3
=back
=head2 Required MIBs
=over
=item Inherited Classes' MIBs
See L<SNMP::Info::CiscoStats/"Required MIBs"> for its own MIB requirements.
See L<SNMP::Info::Layer3/"Required MIBs"> for its own MIB requirements.
=back
=head1 GLOBALS
=head2 Globals imported from SNMP::Info::CiscoStats
See documentation in L<SNMP::Info::CiscoStats/"GLOBALS"> for details.
=head2 Global Methods imported from SNMP::Info::Layer3
See documentation in L<SNMP::Info::Layer3/"GLOBALS"> for details.
=head1 TABLE METHODS
These are methods that return tables of information in the form of a reference
to a hash.
=head2 Overrides
=over
=item $fwsm->at_paddr()
This function derives the at_paddr information from the n2p_paddr() table as
the MIB to provide that information isn't supported on FWSM.
=item $fwsm->at_netaddr()
This function derives the at_netaddr information from the n2p_paddr() table as
the MIB to provide that information isn't supported on FWSM.
=item $fwsm->at_ifaddr()
This function derives the at_ifaddr information from the n2p_paddr() table as
the MIB to provide that information isn't supported on FWSM.
=back
=head2 Table Methods imported from SNMP::Info::CiscoStats
See documentation in L<SNMP::Info::CiscoStats/"TABLE METHODS"> for details.
=head2 Table Methods imported from SNMP::Info::Layer3
See documentation in L<SNMP::Info::Layer3/"TABLE METHODS"> for details.
=cut