get_sid_string.rb

def get_sid_string(data)
  sid = []
  sid << data[0].to_s

  rid = ""
  (6).downto(1) do |i|
    rid += byte2hex(data[i,1][0])
  end
  sid << rid.to_i.to_s

  sid += data.unpack("bbbbbbbbV*")[8..-1]
  "S-" + sid.join('-')
end

def byte2hex(b)
  ret = '%x' % (b.to_i & 0xff)
  ret = '0' + ret if ret.length < 2
  ret
end