Member Check-In System

Super hacky, eventually to be improved member check-in system with smart cards.

reader.py

#! /usr/bin/env python
import string,commands,os
from sys import stdin, exc_info
from time import sleep

from smartcard.CardMonitoring import CardMonitor, CardObserver
from smartcard.util import *

current=open("whoishere","r").read().split("\n")
mute=False

class printobserver(CardObserver):

    def update(self, observable, (addedcards, removedcards)):
	global current
	global mute
        for card in addedcards:
            print "+"+string.replace(toHexString(card.atr)," ",'')
	    dump=commands.getoutput("pkcs15-tool -D")
	    if "UASID:" in dump:
	        id=dump[dump.find("UASID:")+6:]
		id=id[0:id.find("]")]
		current=open("whoishere","r").read().split("\n")
		if id != "" and id not in current:
			print id,"has checked in at the space."

			if mute == False:
				os.system("echo '"+id+" has checked in at the space.' > /uas/irc/irc")
		
				f=open("/uas/ocs/log","a")
				f.write(id+" was here\n")
				f.close()

		                f=open("/uas/smart/whoishere","a")
		                f.write(id+"\n")
		                f.close()
				current.append(id)
				os.system("mplayer /uas/hal9001/welcome_back.wav")
		else:
			print id,"Already Checked in or Empty ID"
                        os.system("mplayer /uas/hal9001/welcome_back.wav")


	for card in removedcards:
            print "-"+string.replace(toHexString(card.atr)," ",'')
try:
    cardmonitor = CardMonitor()
    cardobserver = printobserver()
    cardmonitor.addObserver(cardobserver)

    while True:
        todo=raw_input("").strip()
	if "add user " in todo:
	    id = todo[9:]
	    if id != "":
                commands.getoutput("pkcs15-init -TEC --label 'UASID:"+id+"' --no-so-pin")
		print "That could of  work, or not, whatever"
	elif "mute on" in todo:
		mute=True
		print "Mute on"
	elif "mute off" in todo:
		mute=False
		print "Mute off"
    cardmonitor.deleteObserver(cardobserver)

except:
    print exc_info()[0], ':', exc_info()[1]