Using the magtek class in Ruby

gistfile1.rb

require File.dirname(__FILE__) + '/magtek.rb'
require 'logger'
require 'rubygems'
require 'httpi'
require 'curb'

Process.daemon

logger = Logger.new("/var/log/monitor_usb.log")
logger.level = Logger::INFO

logger.info "Starting usb monitor:"
logger.info "kiniting as user"
kinit -k -t ...`

mt = MagTek.new
mt.open
# loop forever, just keep monitoring
loop do
  success, name, drivers_license_number = mt.read
  if success
    url = ""
    params = "?user=#{name}&drivers_license_number=#{drivers_license_number}"
    url = URI.escape("http://url.com/user_swiped#{params}")
    begin
      HTTPI.adapter = :curb
      req = HTTPI::Request.new
      req.url = url
      # use spnego when in prod and dev
      req.auth.gssnegotiate
      resp = HTTPI.get req do |http|
        http.use_ssl
      end
      if resp.code == 200
        logger.info "User was swiped in successfully."
      else
        logger.error "Got response code: #{resp.code}"
        logger.error "User could not be updated in the database"
      end
    rescue Errno::ECONNREFUSED => e
      logger.error e.message
      logger.error "You need to make sure the application server is running."
    rescue Exception => e
      logger.error e.message
    end
  else
    # TODO warn user on the screen that they need to try again
    logger.warn "Did not get a successful read from the USB stream"
  end
end
mt.close