Class PacketFu::EthHeader
In: lib/packetfu/eth.rb
Parent: Struct.new(:eth_dst, :eth_src, :eth_proto, :body)

EthHeader is a complete Ethernet struct, used in EthPacket. It‘s the base header for all other protocols, such as IPHeader, TCPHeader, etc.

For more on the construction on MAC addresses, see en.wikipedia.org/wiki/MAC_address

Header Definition

 EthMac  :eth_dst                     # See EthMac
 EthMac  :eth_src                     # See EthMac
 Int16   :eth_proto, Default: 0x8000  # IP 0x0800, Arp 0x0806
 String  :body

Methods

eth_daddr   eth_daddr=   eth_dst   eth_dst=   eth_proto   eth_proto=   eth_saddr   eth_saddr=   eth_src   eth_src=   mac2str   new   read   str2mac   to_s  

Included Modules

StructFu

Public Class methods

mac2str(mac)

Converts a readable MAC (11:22:33:44:55:66) to a binary string. Readable MAC‘s may be split on colons, dots, spaces, or underscores.

irb> PacketFu::EthHeader.mac2str("11:22:33:44:55:66")

#=> "\021\"3DUf"

str2mac(mac='')

Converts a binary string to a readable MAC (11:22:33:44:55:66).

irb> PacketFu::EthHeader.str2mac("\x11\x22\x33\x44\x55\x66")

#=> "11:22:33:44:55:66"

Public Instance methods

eth_daddr()

Gets the destination MAC address in a more readable way.

eth_daddr=(mac)

Set the destination MAC address in a more readable way.

eth_dst()

Getter for the Ethernet destination address.

eth_dst=(i)

Setter for the Ethernet destination address.

eth_proto()

Getter for the Ethernet protocol number.

eth_proto=(i)

Setter for the Ethernet protocol number.

eth_saddr()

Gets the source MAC address in a more readable way.

eth_saddr=(mac)

Sets the source MAC address in a more readable way.

eth_src()

Getter for the Ethernet source address.

eth_src=(i)

Setter for the Ethernet source address.

read(str)

Reads a string to populate the object.

to_s()

Returns the object in string form.

[Validate]