#!/usr/bin/python
+# vim:ts=4
-import sys, os, string, socket, time, re
+USE_DB = 0
+
+import sys, os, string, re, pwd
+if USE_DB: import pg
+from time import time, sleep
from popen2 import popen2
-from pyPgSQL import PgSQL
from LATClient import LATClient
-from CRC import do_crc
-from binascii import unhexlify
-
-asynchronous_responses = [ '400', '401', # door open/closed
- '610', # switches changed
- ]
-
-class VendingMachine:
- def __init__(self, rfh, wfh):
- self.secret = 'AAAAAAAAAAAAAAAA'
- self.rfh = rfh
- self.wfh = wfh
- self.challenge = None
- # Initialise ourselves into a known state
- self.wfh.write('\n')
- self.await_prompt()
- self.wfh.write('echo off\n')
- self.await_prompt()
- self.wfh.write('PING\n')
- code = ''
- while code != '000':
- (code, _) = self.get_response()
-
- def await_prompt(self):
- self.wfh.flush()
- state = 1
- prefix = ''
- s = ''
- while True:
- s = self.rfh.read(1)
- if s == '': raise Exception
- if s == '\n' or s == '\r':
- state = 1
- prefix = ''
- if (s == '#' or s == '%') and state == 1: state = 2
- if s == ' ' and state == 2:
- if prefix == '':
- self.challenge = None
- return
- if re.search('^[0-9a-fA-F]{4}$', prefix):
- self.challenge = unhexlify(prefix)
- return
-
- def get_response(self):
- self.wfh.flush()
- while True:
- s = ''
- while s == '':
- s = self.rfh.readline()
- if s == '': return None
- s = s.strip('\r\n')
- code = s[0:3]
- text = s[4:]
- if code in asynchronous_responses:
- self.handle_event(code, text)
+from VendingMachine import VendingMachine
+from ConfigParser import ConfigParser
+from HorizScroll import HorizScroll
+
+GREETING = 'UCC SNACKS'
+PIN_LENGTH = 4
+
+DOOR = 1
+SWITCH = 2
+KEY = 3
+
+class DispenseDatabase:
+ def __init__(self, vending_machine, host, name, user, password):
+ self.vending_machine = vending_machine
+ self.db = pg.DB(dbname = name, host = host, user = user, passwd = password)
+ self.db.query('LISTEN vend_requests')
+
+ def process_requests(self):
+ print 'processing'
+ query = 'SELECT request_id, request_slot FROM vend_requests WHERE request_handled = false'
+ try:
+ outstanding = self.db.query(query).getresult()
+ except (pg.error,), db_err:
+ sys.stderr.write('Failed to query database: %s\n'%(db_err.strip()))
+ return
+ for (id, slot) in outstanding:
+ (worked, code, string) = self.vending_machine.vend(slot)
+ print (worked, code, string)
+ if worked:
+ query = 'SELECT vend_success(%s)'%id
+ self.db.query(query).getresult()
else:
- self.await_prompt()
- return (code, text)
+ query = 'SELECT vend_failed(%s)'%id
+ self.db.query(query).getresult()
+
+ def handle_events(self):
+ notifier = self.db.getnotify()
+ while notifier is not None:
+ self.process_requests()
+ notify = self.db.getnotify()
- def handle_event(self, code, text):
+def scroll_options(username, mk, welcome = False):
+ if welcome:
+ msg = [(center('WELCOME'), False, 0.8),
+ (center(username), False, 0.8)]
+ else:
+ msg = []
+ choices = ' '*10+'CHOICES: '
+ try:
+ coke_machine = file('/home/other/coke/coke_contents')
+ cokes = coke_machine.readlines()
+ coke_machine.close()
+ except:
+ cokes = []
pass
+ for c in cokes:
+ c = c.strip()
+ (slot_num, price, slot_name) = c.split(' ', 2)
+ if slot_name == 'dead': continue
+ choices += '%s8-%s (%sc) '%(slot_num, slot_name, price)
+ choices += '55-DOOR '
+ choices += 'OR A SNACK. '
+ choices += '99 TO READ AGAIN. '
+ choices += 'CHOICE? '
+ msg.append((choices, False, None))
+ mk.set_messages(msg)
+
+def get_pin(uid):
+ try:
+ info = pwd.getpwuid(uid)
+ except KeyError:
+ return None
+ if info.pw_dir == None: return False
+ pinfile = os.path.join(info.pw_dir, '.pin')
+ try:
+ s = os.stat(pinfile)
+ except OSError:
+ return None
+ if s.st_mode & 077:
+ return None
+ try:
+ f = file(pinfile)
+ except IOError:
+ return None
+ pinstr = f.readline()
+ f.close()
+ if not re.search('^'+'[0-9]'*PIN_LENGTH+'$', pinstr):
+ return None
+ return int(pinstr)
+
+def has_good_pin(uid):
+ return get_pin(uid) != None
+
+def verify_user_pin(uid, pin):
+ if get_pin(uid) == pin:
+ info = pwd.getpwuid(uid)
+ return info.pw_name
+ else:
+ return None
+
+def door_open_mode(vending_machine):
+ print "Entering open door mode"
+ v.display("DOOR OPEN")
+ while True:
+ e = v.next_event()
+ if e == None: break
+ (event, params) = e
+ if event == DOOR:
+ if params == 1: # door closed
+ v.display("BYE BYE!")
+ sleep(1)
+ return
+
+def center(str):
+ LEN = 10
+ return ' '*((LEN-len(str))/2)+str
+
+class MessageKeeper:
+ def __init__(self, vendie):
+ # Each element of scrolling_message should be a 3-tuple of
+ # ('message', True/False if it is to be repeated, time to display)
+ self.scrolling_message = []
+ self.v = vendie
+ self.next_update = None
+
+ def set_message(self, string):
+ self.scrolling_message = [(string, False, None)]
+ self.update_display(True)
- def authed_message(self, message):
- if self.challenge == None:
- return message
- crc = do_crc('%c%c'%(self.challenge >> 8, self.challenge & 0xff))
- crc = do_crc(self.secret, crc)
- crc = do_crc(message, crc)
- return message+'|'+('%04x'%crc)
-
- def ping(self):
- self.wfh.write('PING\n')
- (code, string) = self.get_response()
- return (code == '000', code, string)
-
- def vend(self, item):
- if not re.search('^[0-9][0-9]$', item):
- return (False, 'Invalid item requested (%s)'%item)
- self.wfh.write(self.authed_message(('V%s\n'%item)+'\n'))
- (code, string) = self.get_response()
- return (code, string)
-
- def beep(self, duration = None, synchronous = True):
- msg = 'B'
- if synchronous: msg += 'S'
- if duration != None:
- if duration > 255: duration = 255
- if duration < 1: duration = 1
- msg += '%02x'%duration
- self.wfh.write(msg+'\n')
- (code, string) = self.get_response()
- return (code == '500', code, string)
-
- def silence(self, duration = None, synchronous = True):
- msg = 'C'
- if synchronous: msg += 'S'
- if duration != None:
- if duration > 255: duration = 255
- if duration < 1: duration = 1
- msg += '%02x'%duration
- self.wfh.write(msg+'\n')
- (code, string) = self.get_response()
- # FIXME: workaround a bug in rom W. should be just: return (code == '500', code, string)
- return (code == '500' or code == '501', code, string)
-
- def display(self, string):
- if len(string) > 10:
- string = string[0:10]
- self.wfh.write('D'+string+'\n')
- (code, string) = self.get_response()
- return (code == '300', code, string)
+ def set_messages(self, strings):
+ self.scrolling_message = strings
+ self.update_display(True)
+
+ def update_display(self, forced = False):
+ if not forced and self.next_update != None and time() < self.next_update:
+ return
+ if len(self.scrolling_message) > 0:
+ if len(self.scrolling_message[0][0]) > 10:
+ (m, r, t) = self.scrolling_message[0]
+ a = []
+ exp = HorizScroll(m).expand(padding = 0, wraparound = False)
+ if t == None:
+ t = 0.1
+ else:
+ t = t / len(exp)
+ for x in exp:
+ a.append((x, r, t))
+ del self.scrolling_message[0]
+ self.scrolling_message = a + self.scrolling_message
+ newmsg = self.scrolling_message[0]
+ if newmsg[2] != None:
+ self.next_update = time() + newmsg[2]
+ else:
+ self.next_update = None
+ self.v.display(self.scrolling_message[0][0])
+ if self.scrolling_message[0][1]:
+ self.scrolling_message.append(self.scrolling_message[0])
+ del self.scrolling_message[0]
+
+ def done(self):
+ return len(self.scrolling_message) == 0
if __name__ == '__main__':
+ cp = ConfigParser()
+ cp.read('/etc/dispense/servers.conf')
+ DBServer = cp.get('Database', 'Server')
+ DBName = cp.get('Database', 'Name')
+ DBUser = cp.get('VendingMachine', 'DBUser')
+ DBPassword = cp.get('VendingMachine', 'DBPassword')
+
+ ServiceName = cp.get('VendingMachine', 'ServiceName')
+ ServicePassword = cp.get('VendingMachine', 'Password')
# Open vending machine via LAT
- latclient = LATClient(service = 'VEND', password = 'dmscptd')
- (rfh, wfh) = latclient.get_fh()
+ if 0:
+ latclient = LATClient(service = ServiceName, password = ServicePassword)
+ (rfh, wfh) = latclient.get_fh()
+ else:
+ #(rfh, wfh) = popen2('../../virtualvend/vvend.py')
+ import socket
+ sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
+ sock.connect(('localhost', 5150))
+ rfh = sock.makefile('r')
+ wfh = sock.makefile('w')
v = VendingMachine(rfh, wfh)
print 'PING is', v.ping()
- print 'BEEP is', v.beep()
- print 'VEND 11 is', v.vend('11')
- print 'SILENCE is', v.silence()
- print 'DISPLAY is', v.display('GOOD NIGHT')
+
+ if USE_DB: db = DispenseDatabase(v, DBServer, DBName, DBUser, DBPassword)
+ cur_user = ''
+ cur_pin = ''
+ cur_selection = ''
+
+ mk = MessageKeeper(v)
+ mk.set_message(GREETING)
+ logout_timeout = None
+ last_timeout_refresh = None
+
+ while True:
+ if USE_DB: db.handle_events()
+
+ if logout_timeout != None:
+ time_left = logout_timeout - time()
+ if time_left < 5 and (last_timeout_refresh is None or last_timeout_refresh > time_left):
+ mk.set_message('LOGOUT: '+str(int(time_left)))
+ last_timeout_refresh = int(time_left)
+ cur_selection = ''
+
+ if logout_timeout != None and logout_timeout - time() <= 0:
+ logout_timeout = None
+ cur_user = ''
+ cur_pin = ''
+ cur_selection = ''
+ mk.set_message(GREETING)
+
+ if logout_timeout and not mk.done(): logout_timeout = None
+ if len(cur_pin) == PIN_LENGTH and mk.done() and logout_timeout == None:
+ # start autologout
+ logout_timeout = time() + 15
+
+ mk.update_display()
+
+ e = v.next_event(0)
+ if e == None:
+ e = v.next_event(0.1)
+ if e == None:
+ continue
+ (event, params) = e
+ print e
+ if event == DOOR:
+ if params == 0:
+ door_open_mode(v);
+ cur_user = ''
+ cur_pin = ''
+ mk.set_message(GREETING)
+ elif event == SWITCH:
+ # don't care right now.
+ pass
+ elif event == KEY:
+ key = params
+ # complicated key handling here:
+ if len(cur_user) < 5:
+ if key == 11:
+ cur_user = ''
+ mk.set_message(GREETING)
+ continue
+ cur_user += chr(key + ord('0'))
+ mk.set_message('UID: '+cur_user)
+ if len(cur_user) == 5:
+ uid = int(cur_user)
+ if not has_good_pin(uid):
+ mk.set_messages(
+ [(center('INVALID'), False, 0.7),
+ (center('PIN'), False, 0.7),
+ (center('SETUP'), False, 1.0),
+ (GREETING, False, None)])
+ cur_user = ''
+ cur_pin = ''
+ continue
+ cur_pin = ''
+ mk.set_message('PIN: ')
+ continue
+ elif len(cur_pin) < PIN_LENGTH:
+ if key == 11:
+ if cur_pin == '':
+ cur_user = ''
+ mk.set_message(GREETING)
+ continue
+ cur_pin = ''
+ mk.set_message('PIN: ')
+ continue
+ cur_pin += chr(key + ord('0'))
+ mk.set_message('PIN: '+'X'*len(cur_pin))
+ if len(cur_pin) == PIN_LENGTH:
+ username = verify_user_pin(int(cur_user), int(cur_pin))
+ if username:
+ v.beep(0, False)
+ cur_selection = ''
+ scroll_options(username, mk, True)
+ continue
+ else:
+ v.beep(40, False)
+ mk.set_messages(
+ [(center('BAD PIN'), False, 1.0),
+ (center('SORRY'), False, 0.5),
+ (GREETING, False, None)])
+ cur_user = ''
+ cur_pin = ''
+ continue
+ elif len(cur_selection) == 0:
+ if key == 11:
+ cur_pin = ''
+ cur_user = ''
+ cur_selection = ''
+ v.display('BYE!')
+ sleep(0.5)
+ mk.set_message(GREETING)
+ continue
+ cur_selection += chr(key + ord('0'))
+ mk.set_message('SELECT: '+cur_selection)
+ elif len(cur_selection) == 1:
+ if key == 11:
+ cur_selection = ''
+ logout_timeout = None
+ scroll_options(username, mk)
+ continue
+ else:
+ cur_selection += chr(key + ord('0'))
+ #make_selection(cur_selection)
+ # XXX this should move somewhere else:
+ if cur_selection == '55':
+ v.display('GOT DOOR?')
+ os.system('su - "%s" -c "dispense door"'%username)
+ elif cur_selection == '99':
+ scroll_options(username, mk)
+ cur_selection = ''
+ continue
+ elif cur_selection[1] == '8':
+ v.display('GOT COKE?')
+ os.system('su - "%s" -c "dispense %s"'%(username, cur_selection[0]))
+ else:
+ v.display('HERES A '+cur_selection)
+ v.vend(cur_selection)
+ sleep(0.5)
+ v.display('THANK YOU')
+ sleep(0.5)
+ cur_selection = ''
+ logout_timeout = time() + 10
git.ucc.asn.au / uccvend-vendserver.git / blobdiff
UCC git Repository :: git.ucc.asn.au