module PhusionPassenger::Utils

def generate_random_id(method)
  data = File.open("/dev/urandom", "rb") do |f|
    f.read(64)
  end
  case method
  when :base64
    data = [data].pack('m')
    data.gsub!("\n", '')
    data.gsub!("+", '')
    data.gsub!("/", '')
    data.gsub!(/==$/, '')
    return data
  when :hex
    return data.unpack('H*')[0]
  else
    raise ArgumentError, "Invalid method #{method.inspect}"
  end
end