NAME

Net::Packet::ARP - ARP layer 3 object

SYNOPSIS

use Net::Packet::ARP;

# Build layer to inject to network
my $arpRequest = Net::Packet::ARP->new(
   dstIp => "192.168.0.1",
);

# Decode from network to create the object
# Usually, you do not use this, it is used by Net::Packet::Frame
my $arp = Net::Packet::ARP->new(raw => $rawFromNetwork);

print $arpRequest->print, "\n";

DESCRIPTION

This modules implements the encoding and decoding of the ARP layer.

RFC: ftp://ftp.rfc-editor.org/in-notes/rfc826.txt

See also Net::Packet::Layer and Net::Packet::Layer3 for other attributes and methods.

ATTRIBUTES

hType

pType

Hardware and protocol address types.

hSize

pSize

Hardware and protocol address sizes in bytes.

opCode

The operation code number to perform.

src

dst

Source and destination hardware addresses.

srcIp

dstIp

Source and destination IP addresses.

METHODS

new

Object constructor. You can pass attributes that will overwrite default ones. Default values:

hType: NP_ARP_HTYPE_ETH

pType: NP_ARP_PTYPE_IPv4

hSize: NP_ARP_HSIZE_ETH

pSize: NP_ARP_PSIZE_IPv4

opCode: NP_ARP_OPCODE_REQUEST

src: $Env->mac

dst: NP_ARP_ADDR_BROADCAST

srcIp: $Env->ip

dstIp: 127.0.0.1

pack

Packs all attributes into a raw format, in order to inject to network. Returns 1 on success, undef otherwise.

unpack

Unpacks raw data from network and stores attributes into the object. Returns 1 on success, undef otherwise.

recv

Will search for a matching replies in framesSorted or frames from a Net::Packet::Dump object.

isRequest

isReply

Returns 1 if the opCode attribute is of specified type.

CONSTANTS

Load them: use Net::Packet::Consts qw(:arp);

NP_ARP_HTYPE_ETH

NP_ARP_PTYPE_IPv4

Hardware and protocol address types.

NP_ARP_HSIZE_ETH

NP_ARP_PSIZE_IPv4

Hardware and protocol address sizes.

NP_ARP_OPCODE_REQUEST

NP_ARP_OPCODE_REPLY

Operation code numbers.

NP_ARP_ADDR_BROADCAST

Broadcast address for src or dst attributes.

AUTHOR

Patrice <GomoR> Auffret

COPYRIGHT AND LICENSE

Copyright (c) 2004-2005, Patrice <GomoR> Auffret

You may distribute this module under the terms of the Artistic license. See Copying file in the source distribution archive.

RELATED MODULES

NetPacket, Net::RawIP, Net::RawSock