EthOui is the Organizationally Unique Identifier portion of a MAC address, used in EthHeader.

See the OUI list at standards.ieee.org/regauth/oui/oui.txt

Header Definition

 Fixnum   :b0
 Fixnum   :b1
 Fixnum   :b2
 Fixnum   :b3
 Fixnum   :b4
 Fixnum   :b5
 Fixnum   :local
 Fixnum   :multicast
 Int16    :oui,       Default: 0x1ac5 :)
Methods
N
R
T
Class Public methods
new(args={})

EthOui is unusual in that the bit values do not enjoy StructFu typing.

Source: show 

# File lib/packetfu/protos/eth.rb, line 21
                def initialize(args={})
                        args[:local] ||= 0 
                        args[:oui] ||= 0x1ac # :)
                        args.each_pair {|k,v| args[k] = 0 unless v} 
                        super(args[:b5], args[:b4], args[:b3], args[:b2], 
                                                args[:b1], args[:b0], args[:local], args[:multicast], 
                                                args[:oui])
                end
Instance Public methods
read(str)

Reads a string to populate the object.

Source: show 

# File lib/packetfu/protos/eth.rb, line 45
                def read(str)
                        force_binary(str)
                        return self if str.nil?
                        if 1.respond_to? :ord
                                byte = str[0].ord
                        else
                                byte = str[0]
                        end
                        self[:b5] =        byte & 0b10000000 == 0b10000000 ? 1 : 0
                        self[:b4] =        byte & 0b01000000 == 0b01000000 ? 1 : 0
                        self[:b3] =        byte & 0b00100000 == 0b00100000 ? 1 : 0
                        self[:b2] =        byte & 0b00010000 == 0b00010000 ? 1 : 0
                        self[:b1] =        byte & 0b00001000 == 0b00001000 ? 1 : 0
                        self[:b0] =        byte & 0b00000100 == 0b00000100 ? 1 : 0
                        self[:local] =     byte & 0b00000010 == 0b00000010 ? 1 : 0
                        self[:multicast] = byte & 0b00000001 == 0b00000001 ? 1 : 0
                        self[:oui] =       str[1,2].unpack("n").first
                        self
                end
to_s()

Returns the object in string form.

Source: show 

# File lib/packetfu/protos/eth.rb, line 31
                def to_s
                        byte = 0
                        byte += 0b10000000 if b5.to_i == 1
                        byte += 0b01000000 if b4.to_i == 1
                        byte += 0b00100000 if b3.to_i == 1
                        byte += 0b00010000 if b2.to_i == 1
                        byte += 0b00001000 if b1.to_i == 1
                        byte += 0b00000100 if b0.to_i == 1
                        byte += 0b00000010 if local.to_i == 1
                        byte += 0b00000001 if multicast.to_i == 1
                        [byte,oui].pack("Cn")
                end