#!/usr/bin/ruby
#simple macchanger, the OUI is selected from one of many in the array for a unique valid MAC

# usage: `sudo macchange <iface>`

class Array
  # If +number+ is greater than the size of the array, the method
  # will simply return the array itself sorted randomly
  def randomly_pick(number)
    sort_by{ rand }.slice(0...number)
  end
end

macs = [ "00:04:23" , "00:1e:64" , "00:26:b0" , "00:26:08" , "00:19:d2" , "00:26:b6" , "79:ca:39" , "c4:17:fe" ]

oui = macs.randomly_pick(1)

3.times do
rand_hex = ((0xff)* rand).to_i.to_s(16)
$new_mac = oui << ":" + rand_hex
end
print "\033[00;31m[SYSTEM]\033[00m \033[00;34myour new MAC Address is #{$new_mac}\033[00m\n"
`ifconfig #{ARGV[0]} down`
`ifconfig #{ARGV[0]} hw ether #{$new_mac}`
`ifconfig #{ARGV[0]} up`