NetPacket::Ethernet(3pUser Contributed Perl DocumentatNetPacket::Ethernet(3pm)NAMENetPacket::Ethernet - Assemble and disassemble ethernet packets.
VERSION
version 1.6.0
SYNOPSIS
use NetPacket::Ethernet;
$eth_obj = NetPacket::Ethernet->decode($raw_pkt);
$eth_pkt = NetPacket::Ethernet->encode(params...); # Not implemented
$eth_data = NetPacket::Ethernet::strip($raw_pkt);
DESCRIPTION
"NetPacket::Ethernet" provides a set of routines for assembling and
disassembling packets using the Ethernet protocol.
Methods
"NetPacket::Ethernet->decode([RAW PACKET])"
Decode the raw packet data given and return an object containing
instance data. This method will quite happily decode garbage
input. It is the responsibility of the programmer to ensure valid
packet data is passed to this method.
"NetPacket::Ethernet->encode(param => value)"
Return an ethernet packet encoded with the instance data specified.
Not implemented.
Functions
"NetPacket::Ethernet::strip([RAW PACKET])"
Return the encapsulated data (or payload) contained in the ethernet
packet. This data is suitable to be used as input for other
"NetPacket::*" modules.
This function is equivalent to creating an object using the
"decode()" constructor and returning the "data" field of that
object.
Instance data
The instance data for the "NetPacket::Ethernet" object consists of the
following fields.
src_mac
The source MAC address for the ethernet packet as a hex string.
dest_mac
The destination MAC address for the ethernet packet as a hex
string.
type
The protocol type for the ethernet packet.
data
The payload for the ethernet packet.
Exports
default
none
exportable
ETH_TYPE_IP ETH_TYPE_ARP ETH_TYPE_APPLETALK ETH_TYPE_SNMP
ETH_TYPE_IPv6 ETH_TYPE_PPP
tags
The following tags group together related exportable items.
":types"
ETH_TYPE_IP ETH_TYPE_ARP ETH_TYPE_APPLETALK ETH_TYPE_SNMP
ETH_TYPE_IPv6 ETH_TYPE_PPP
":strip"
Import the strip function "eth_strip" which is an alias for
"NetPacket::Ethernet::strip"
":ALL"
All the above exportable items.
EXAMPLE
The following script dumps ethernet frames by mac address and protocol
to standard output.
#!/usr/bin/perl -w
use strict;
use Net::PcapUtils;
use NetPacket::Ethernet;
sub process_pkt {
my($arg, $hdr, $pkt) = @_;
my $eth_obj = NetPacket::Ethernet->decode($pkt);
print("$eth_obj->{src_mac}:$eth_obj->{dest_mac} $eth_obj->{type}\n");
}
Net::PcapUtils::loop(\&process_pkt);
TODO
Implement "encode()" function
COPYRIGHT
Copyright (c) 2001 Tim Potter and Stephanie Wehner.
Copyright (c) 1995,1996,1997,1998,1999 ANU and CSIRO on behalf of the
participants in the CRC for Advanced Computational Systems ('ACSys').
This module is free software. You can redistribute it and/or modify it
under the terms of the Artistic License 2.0.
This program is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of
merchantability or fitness for a particular purpose.
AUTHOR
Tim Potter <tpot@samba.org>
perl v5.20.2 2015-03-13 NetPacket::Ethernet(3pm)
