NAME

NetPacket::ICMP - Assemble and disassemble ICMP (Internet Control Message Protocol) packets.

SYNOPSIS

  use NetPacket::ICMP;

  $icmp_obj = NetPacket::ICMP->decode($raw_pkt);
  $icmp_pkt = NetPacket::ICMP->encode();
  $icmp_data = NetPacket::ICMP::strip($raw_pkt);

DESCRIPTION

NetPacket::ICMP provides a set of routines for assembling and disassembling packets using ICMP (Internet Control Message Protocol).

Methods

NetPacket::ICMP->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::ICMP->encode()

Return an ICMP packet encoded with the instance data specified.

Functions

NetPacket::ICMP::strip([RAW PACKET])

Return the encapsulated data (or payload) contained in the ICMP packet.

Instance data

The instance data for the NetPacket::ICMP object consists of the following fields.

type

The ICMP message type of this packet.

code

The ICMP message code of this packet.

cksum

The checksum for this packet.

data

The encapsulated data (payload) for this packet.

Exports

default

none

exportable

Icmp message types: ICMP_ECHOREPLY ICMP_UNREACH ICMP_SOURCEQUENCH ICMP_REDIRECT ICMP_ECHO ICMP_ROUTERADVERT ICMP_ROUTERSOLICIT ICMP_TIMXCEED ICMP_PARAMPROB ICMP_TSTAMP ICMP_TSTAMPREPLY ICMP_IREQ ICMP_IREQREPLY ICMP_MASREQ ICMP_MASKREPLY

tags

The following tags group together related exportable items.

:strip

Import the strip function icmp_strip.

:ALL

All the above exportable items.

EXAMPLE

TODO

Create constants

Write example

COPYRIGHT

  Copyright (c) 2001 Tim Potter.

  This package is free software and is provided "as is" without express 
  or implied warranty.  It may be used, redistributed and/or modified 
  under the terms of the Perl Artistic License (see
  http://www.perl.com/perl/misc/Artistic.html)

  Copyright (c) 1995,1996,1997,1998,1999 ANU and CSIRO on behalf of 
  the participants in the CRC for Advanced Computational Systems
  ('ACSys').

  ACSys makes this software and all associated data and documentation
  ('Software') available free of charge.  You may make copies of the 
  Software but you must include all of this notice on any copy.

  The Software was developed for research purposes and ACSys does not
  warrant that it is error free or fit for any purpose.  ACSys
  disclaims any liability for all claims, expenses, losses, damages
  and costs any user may incur as a result of using, copying or
  modifying the Software.

AUTHOR

Tim Potter <tpot@samba.org>

Stephanie Wehner <atrak@itsx.com>