VendServer/VendServer.py

   1 #!/usr/bin/python
   2 # vim: ts=4 sts=4 sw=4 noexpandtab
   3
   4 USE_MIFARE = 1
   5
   6 import ConfigParser
   7 import sys, os, string, re, pwd, signal, math, syslog
   8 import logging, logging.handlers
   9 from traceback import format_tb
  10 from time import time, sleep, mktime, localtime
  11 from subprocess import Popen, PIPE
  12 from LATClient import LATClient, LATClientException
  13 from SerialClient import SerialClient, SerialClientException
  14 from VendingMachine import VendingMachine, VendingException
  15 from MessageKeeper import MessageKeeper
  16 from HorizScroll import HorizScroll
  17 from random import random, seed
  18 from Idler import GreetingIdler,TrainIdler,GrayIdler,StringIdler,ClockIdler,FortuneIdler,FileIdler,PipeIdler
  19 from SnackConfig import get_snack#, get_snacks
  20 import socket
  21 from posix import geteuid
  22 from OpenDispense import OpenDispense as Dispense
  23
  24 CREDITS="""
  25 This vending machine software brought to you by:
  26 Bernard Blackham
  27 Mark Tearle
  28 Nick Bannon
  29 Cameron Patrick
  30 and a collective of hungry alpacas.
  31
  32 The MIFARE card reader bought to you by:
  33 David Adam
  34
  35 Bug Hunting and hardware maintenance by:
  36 Mitchell Pomery
  37
  38 For a good time call +61 8 6488 3901
  39
  40
  41
  42 """
  43
  44 PIN_LENGTH = 4
  45
  46 DOOR = 1
  47 SWITCH = 2
  48 KEY = 3
  49 TICK = 4
  50 MIFARE = 5
  51
  52
  53 (
  54 STATE_IDLE,
  55 STATE_DOOR_OPENING,
  56 STATE_DOOR_CLOSING,
  57 STATE_GETTING_UID,
  58 STATE_GETTING_PIN,
  59 STATE_GET_SELECTION,
  60 STATE_GRANDFATHER_CLOCK,
  61 ) = range(1,8)
  62
  63 TEXT_SPEED = 0.8
  64 IDLE_SPEED = 0.05
  65
  66
  67 config_options = {
  68         'DBServer': ('Database', 'Server'),
  69         'DBName': ('Database', 'Name'),
  70         'DBUser': ('VendingMachine', 'DBUser'),
  71         'DBPassword': ('VendingMachine', 'DBPassword'),
  72
  73         'ServiceName': ('VendingMachine', 'ServiceName'),
  74         'ServicePassword': ('VendingMachine', 'Password'),
  75
  76         'ServerName': ('DecServer', 'Name'),
  77         'ConnectPassword': ('DecServer', 'ConnectPassword'),
  78         'PrivPassword': ('DecServer', 'PrivPassword'),
  79         }
  80
  81 class VendConfigFile:
  82         def __init__(self, config_file, options):
  83                 try:
  84                         cp = ConfigParser.ConfigParser()
  85                         cp.read(config_file)
  86
  87                         for option in options:
  88                                 section, name = options[option]
  89                                 value = cp.get(section, name)
  90                                 self.__dict__[option] = value
  91
  92                 except ConfigParser.Error, e:
  93                         raise SystemExit("Error reading config file "+config_file+": " + str(e))
  94
  95 """
  96 This class manages the current state of the vending machine.
  97 """
  98 class VendState:
  99         def __init__(self,v):
 100                 self.state_table = {}
 101                 self.state = STATE_IDLE
 102                 self.counter = 0
 103
 104                 self.mk = MessageKeeper(v)
 105                 self.cur_user = ''
 106                 self.cur_pin = ''
 107                 self.username = ''
 108                 self.cur_selection = ''
 109                 self.time_to_autologout = None
 110
 111                 self.last_timeout_refresh = None
 112
 113         def change_state(self,newstate,newcounter=None):
 114                 if self.state != newstate:
 115                         self.state = newstate
 116
 117                 if newcounter is not None and self.counter != newcounter:
 118                         self.counter = newcounter
 119
 120 class VendServer():
 121
 122         v = None
 123         vstatus = None
 124         state = None
 125         event = None
 126         idlers = []
 127         idler = None
 128
 129         _pin_uid = 0
 130         _pin_uname = 'root'
 131         _pin_pin = '----'
 132         _last_card_id = -1
 133
 134         dispense = None
 135
 136         """
 137         Show information to the user as to what can be dispensed.
 138         """
 139         def scroll_options(self, username, mk, welcome = False):
 140                 # If the user has just logged in, show them their balance
 141                 if welcome:
 142                         balance = self.dispense.getBalance()
 143                         balance = balance[:-4] + '.' + balance[-4] + balance[-2:]   # Work around display bug
 144
 145                         msg = [(self.center('WELCOME'), False, TEXT_SPEED),
 146                                    (self.center(self.dispense.getUsername()), False, TEXT_SPEED),
 147                                    (self.center(balance), False, TEXT_SPEED),]
 148                 else:
 149                         msg = []
 150                 choices = ' '*10+'CHOICES: '
 151
 152                 # Show what is in the coke machine
 153                 # Need to update this so it uses the abstracted system
 154                 cokes = []
 155                 for i in ['08', '18', '28', '38', '48', '58', '68']:
 156                         cokes.append((i, self.dispense.getItemInfo(i)))
 157
 158                 for c in cokes:
 159                         if c[1][0] == 'dead':
 160                                 continue
 161                         choices += '%s-(%sc)-%s8 '%(c[1][0], c[1][1], c[0])
 162
 163                 # Show the final few options
 164                 choices += '55-DOOR '
 165                 choices += 'OR ANOTHER SNACK. '
 166                 choices += '99 TO READ AGAIN. '
 167                 choices += 'CHOICE?   '
 168                 msg.append((choices, False, None))
 169                 # Send it to the display
 170                 mk.set_messages(msg)
 171
 172         """
 173         In here just for fun.
 174         """
 175         def cookie(self):
 176                 seed(time())
 177                 messages = ['  WASSUP! ', 'PINK FISH ', ' SECRETS ', '  ESKIMO  ', ' FORTUNES ', 'MORE MONEY']
 178                 choice = int(random()*len(messages))
 179                 msg = messages[choice]
 180                 left = range(len(msg))
 181                 for i in range(len(msg)):
 182                         if msg[i] == ' ': left.remove(i)
 183                 reveal = 1
 184                 while left:
 185                         s = ''
 186                         for i in range(0, len(msg)):
 187                                 if i in left:
 188                                         if reveal == 0:
 189                                                 left.remove(i)
 190                                                 s += msg[i]
 191                                         else:
 192                                                 s += chr(int(random()*26)+ord('A'))
 193                                         reveal += 1
 194                                         reveal %= 17
 195                                 else:
 196                                         s += msg[i]
 197                         self.v.display(s)
 198
 199         """
 200         Format text so it will appear centered on the screen.
 201         """
 202         def center(self, str):
 203                 LEN = 10
 204                 return ' '*((LEN-len(str))/2)+str
 205
 206         """
 207         Configure the things that will appear on screen whil the machine is idling.
 208         """
 209         def setup_idlers(self):
 210                 self.idlers = [
 211                         #
 212                         GrayIdler(self.v),
 213                         GrayIdler(self.v,one="*",zero="-"),
 214                         GrayIdler(self.v,one="/",zero="\\"),
 215                         GrayIdler(self.v,one="X",zero="O"),
 216                         GrayIdler(self.v,one="*",zero="-",reorder=1),
 217                         GrayIdler(self.v,one="/",zero="\\",reorder=1),
 218                         GrayIdler(self.v,one="X",zero="O",reorder=1),
 219                         #
 220                         ClockIdler(self.v),
 221                         ClockIdler(self.v),
 222                         ClockIdler(self.v),
 223                         #
 224                         StringIdler(self.v), # Hello Cruel World
 225                         StringIdler(self.v, text="Kill 'em all", repeat=False),
 226                         StringIdler(self.v, text=CREDITS),
 227                         StringIdler(self.v, text=str(math.pi) + "            "),
 228                         StringIdler(self.v, text=str(math.e) + "            "),
 229                         StringIdler(self.v, text="    I want some pizza - please call Broadway Pizza on +61 8 9389 8500 - and order as Quinn - I am getting really hungry", repeat=False),
 230                         # "Hello World" in brainfuck
 231                         StringIdler(self.v, text=">+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]>++++++++[<++++>-] <.>+++++++++++[<++++++++>-]<-.--------.+++.------.--------.[-]>++++++++[<++++>- ]<+.[-]++++++++++."),
 232                         #
 233                         TrainIdler(self.v),
 234                         #
 235                         FileIdler(self.v, '/usr/share/common-licenses/GPL-2',affinity=2),
 236                         #
 237                         PipeIdler(self.v, "/usr/bin/getent", "passwd"),
 238                         FortuneIdler(self.v,affinity=20),
 239                         ]
 240                 disabled = [
 241                         ]
 242
 243         """
 244         Go back to the default idler.
 245         """
 246         def reset_idler(self, t = None):
 247                 self.idler = GreetingIdler(self.v, t)
 248                 self.vstatus.time_of_next_idlestep = time()+self.idler.next()
 249                 self.vstatus.time_of_next_idler = None
 250                 self.vstatus.time_to_autologout = None
 251                 self.vstatus.change_state(STATE_IDLE, 1)
 252
 253         """
 254         Change to a random idler.
 255         """
 256         def choose_idler(self):
 257
 258                 # Implementation of the King Of the Hill algorithm from;
 259                 # http://eli.thegreenplace.net/2010/01/22/weighted-random-generation-in-python/
 260
 261                 #def weighted_choice_king(weights):
 262                 #       total = 0
 263                 #       winner = 0
 264                 #       for i, w in enumerate(weights):
 265                 #               total += w
 266                 #               if random.random() * total < w:
 267                 #                       winner = i
 268                 #       return winner
 269                 #
 270
 271                 total = 0
 272                 winner = None
 273
 274                 for choice in self.idlers:
 275                         weight = choice.affinity()
 276                         total += weight
 277                         if random() * total < weight:
 278                                 winner = choice
 279
 280                 self.idler = winner
 281
 282                 if self.idler:
 283                         self.idler.reset()
 284         """
 285         Run every step while the machine is idling.
 286         """
 287         def idle_step(self):
 288                 if self.idler.finished():
 289                         self.choose_idler()
 290                         self.vstatus.time_of_next_idler = time() + 30
 291                 nextidle = self.idler.next()
 292                 if nextidle is None:
 293                         nextidle = IDLE_SPEED
 294                 self.vstatus.time_of_next_idlestep = time()+nextidle
 295
 296         """
 297         These next two events trigger no response in the code.
 298         """
 299         def handle_tick_event(self, event, params):
 300                 # don't care right now.
 301                 pass
 302
 303         def handle_switch_event(self, event, params):
 304                 # don't care right now.
 305                 pass
 306
 307         """
 308         Don't do anything for this event.
 309         """
 310         def do_nothing(self, event, params):
 311                 print "doing nothing (s,e,p)", state, " ", event, " ", params
 312                 pass
 313
 314         """
 315         These next few entrie tell us to do nothing while we are idling
 316         """
 317         def handle_getting_uid_idle(self, event, params):
 318                 # don't care right now.
 319                 pass
 320
 321         def handle_getting_pin_idle(self, event, params):
 322                 # don't care right now.
 323                 pass
 324
 325         """
 326         While logged in and waiting for user input, slowly get closer to logging out.
 327         """
 328         def handle_get_selection_idle(self, event, params):
 329                 # don't care right now.
 330                 ###
 331                 ### State logging out ..
 332                 if self.vstatus.time_to_autologout != None:
 333                         time_left = self.vstatus.time_to_autologout - time()
 334                         if time_left < 6 and (self.vstatus.last_timeout_refresh is None or self.vstatus.last_timeout_refresh > time_left):
 335                                 self.vstatus.mk.set_message('LOGOUT: '+str(int(time_left)))
 336                                 self.vstatus.last_timeout_refresh = int(time_left)
 337                                 self.vstatus.cur_selection = ''
 338
 339                 if self.vstatus.time_to_autologout != None and self.vstatus.time_to_autologout - time() <= 0:
 340                         self.vstatus.time_to_autologout = None
 341                         self.vstatus.cur_user = ''
 342                         self.vstatus.cur_pin = ''
 343                         self.vstatus.cur_selection = ''
 344                         self._last_card_id = -1
 345                         self.reset_idler()
 346
 347                 ### State fully logged out ... reset variables
 348                 if self.vstatus.time_to_autologout and not self.vstatus.mk.done():
 349                         self.vstatus.time_to_autologout = None
 350                 if self.vstatus.cur_user == '' and self.vstatus.time_to_autologout:
 351                         self.vstatus.time_to_autologout = None
 352
 353                 ### State logged in
 354                 if len(self.vstatus.cur_pin) == PIN_LENGTH and self.vstatus.mk.done() and self.vstatus.time_to_autologout == None:
 355                         # start autologout
 356                         self.vstatus.time_to_autologout = time() + 15
 357                         self.vstatus.last_timeout_refresh = None
 358
 359                 ## FIXME - this may need to be elsewhere.....
 360                 # need to check
 361                 self.vstatus.mk.update_display()
 362
 363         """
 364         Triggered on user input while logged in.
 365         """
 366         def handle_get_selection_key(self, event, params):
 367                 key = params
 368                 if len(self.vstatus.cur_selection) == 0:
 369                         if key == 11:
 370                                 self.vstatus.cur_pin = ''
 371                                 self.vstatus.cur_user = ''
 372                                 self.vstatus.cur_selection = ''
 373                                 self._last_card_id = -1
 374                                 self.vstatus.mk.set_messages([(self.center('BYE!'), False, 1.5)])
 375                                 self.reset_idler(2)
 376                                 return
 377                         self.vstatus.cur_selection += chr(key + ord('0'))
 378                         self.vstatus.mk.set_message('SELECT: '+self.vstatus.cur_selection)
 379                         self.vstatus.time_to_autologout = None
 380                 elif len(self.vstatus.cur_selection) == 1:
 381                         if key == 11:
 382                                 self.vstatus.cur_selection = ''
 383                                 self.vstatus.time_to_autologout = None
 384                                 self.scroll_options(self.vstatus.username, self.vstatus.mk)
 385                                 return
 386                         else:
 387                                 self.vstatus.cur_selection += chr(key + ord('0'))
 388                                 if self.dispense.isLoggedIn():
 389                                         self.make_selection()
 390                                         self.vstatus.cur_selection = ''
 391                                         self.vstatus.time_to_autologout = time() + 8
 392                                         self.vstatus.last_timeout_refresh = None
 393                                 else:
 394                                         # Price check mode.
 395                                         (name,price) = self.dispense.getItemInfo(self.vstatus.cur_selection)
 396                                         dollarprice = "$%.2f" % ( price / 100.0 )
 397                                         dollarprice = dollarprice[:-4] + '.' + dollarprice[-4] + dollarprice[-2:]   # Work around display bug
 398                                         self.v.display( self.vstatus.cur_selection+' - %s'%dollarprice)
 399
 400                                         self.vstatus.cur_selection = ''
 401                                         self.vstatus.time_to_autologout = None
 402                                         self.vstatus.last_timeout_refresh = None
 403
 404         """
 405         Triggered when the user has entered the id of something they would like to purchase.
 406         """
 407         def make_selection(self):
 408                 logging.debug('Dispense item "%s"' % (self.vstatus.cur_selection,))
 409                 # should use sudo here
 410                 if self.vstatus.cur_selection == '55':
 411                         self.vstatus.mk.set_message('OPENSESAME')
 412                         logging.info('dispensing a door for %s'%self.vstatus.username)
 413                         if geteuid() == 0:
 414                                 ret = os.system('dispense -u "%s" door'%self.vstatus.username)
 415                         else:
 416                                 ret = os.system('dispense door')
 417                         if ret == 0:
 418                                 logging.info('door opened')
 419                                 self.vstatus.mk.set_message(self.center('DOOR OPEN'))
 420                         else:
 421                                 logging.warning('user %s tried to dispense a bad door'%self.vstatus.username)
 422                                 self.vstatus.mk.set_message(self.center('BAD DOOR'))
 423                         sleep(1)
 424                 elif self.vstatus.cur_selection == '81':
 425                         self.cookie()
 426                 elif self.vstatus.cur_selection == '99':
 427                         self.scroll_options(self.vstatus.username, self.vstatus.mk)
 428                         self.vstatus.cur_selection = ''
 429                         return
 430                 elif self.vstatus.cur_selection[1] == '8':
 431                         self.v.display('GOT DRINK?')
 432                         if ((os.system('dispense -u "%s" coke:%s'%(self.vstatus.username, self.vstatus.cur_selection[0])) >> 8) != 0):
 433                                 self.v.display('SEEMS NOT')
 434                         else:
 435                                 self.v.display('GOT DRINK!')
 436                 else:
 437                         # first see if it's a named slot
 438                         try:
 439                                 price, shortname, name = get_snack( self.vstatus.cur_selection )
 440                         except:
 441                                 price, shortname, name = get_snack( '--' )
 442                         dollarprice = "$%.2f" % ( price / 100.0 )
 443                         self.v.display(self.vstatus.cur_selection+' - %s'%dollarprice)
 444                         exitcode = os.system('dispense -u "%s" snack:%s'%(self.vstatus.username, self.vstatus.cur_selection)) >> 8
 445                         if (exitcode == 0):
 446                                 # magic dispense syslog service
 447                                 syslog.syslog(syslog.LOG_INFO | syslog.LOG_LOCAL4, "vended %s (slot %s) for %s" % (name, self.vstatus.cur_selection, self.vstatus.username))
 448                                 (worked, code, string) = self.v.vend(self.vstatus.cur_selection)
 449                                 if worked:
 450                                         self.v.display('THANK YOU')
 451                                 else:
 452                                         print "Vend Failed:", code, string
 453                                         self.v.display('VEND FAIL')
 454                         elif (exitcode == 5):   # RV_BALANCE
 455                                 self.v.display('NO MONEY?')
 456                         elif (exitcode == 4):   # RV_ARGUMENTS (zero give causes arguments)
 457                                 self.v.display('EMPTY SLOT')
 458                         elif (exitcode == 1):   # RV_BADITEM (Dead slot)
 459                                 self.v.display('EMPTY SLOT')
 460                         else:
 461                                 syslog.syslog(syslog.LOG_INFO | syslog.LOG_LOCAL4, "failed vending %s (slot %s) for %s (code %d)" % (name, self.vstatus.cur_selection, self.vstatus.username, exitcode))
 462                                 self.v.display('UNK ERROR')
 463                 sleep(1)
 464
 465         """
 466         Triggered when the user presses a button while entering their pin.
 467         """
 468         def handle_getting_pin_key(self, event, params):
 469                 key = params
 470                 if len(self.vstatus.cur_pin) < PIN_LENGTH:
 471                         if key == 11:
 472                                 if self.vstatus.cur_pin == '':
 473                                         self.vstatus.cur_user = ''
 474                                         slef.reset_idler()
 475
 476                                         return
 477                                 self.vstatus.cur_pin = ''
 478                                 self.vstatus.mk.set_message('PIN: ')
 479                                 return
 480                         self.vstatus.cur_pin += chr(key + ord('0'))
 481                         self.vstatus.mk.set_message('PIN: '+'X'*len(self.vstatus.cur_pin))
 482                         if len(self.vstatus.cur_pin) == PIN_LENGTH:
 483                                 if self.dispense.authUserIdPin(self.vstatus.cur_user, self.vstatus.cur_pin):
 484                                         self.vstatus.username = self.dispense.getUsername()
 485                                         self.v.beep(0, False)
 486                                         self.vstatus.cur_selection = ''
 487                                         self.vstatus.change_state(STATE_GET_SELECTION)
 488                                         self.scroll_options(self.vstatus.username, self.vstatus.mk, True)
 489                                         return
 490                                 else:
 491                                         self.v.beep(40, False)
 492                                         self.vstatus.mk.set_messages(
 493                                                 [(self.center('BAD PIN'), False, 1.0),
 494                                                  (self.center('SORRY'), False, 0.5)])
 495                                         self.vstatus.cur_user = ''
 496                                         self.vstatus.cur_pin = ''
 497
 498                                         self.reset_idler(2)
 499
 500                                         return
 501
 502         """
 503         Triggered when the user presses a button while entering their user id.
 504         """
 505         def handle_getting_uid_key(self, event, params):
 506                 key = params
 507                 # complicated key handling here:
 508
 509                 if len(self.vstatus.cur_user) == 0 and key == 9:
 510                         self.vstatus.cur_selection = ''
 511                         self.vstatus.time_to_autologout = None
 512                         self.vstatus.mk.set_message('PRICECHECK')
 513                         sleep(0.5)
 514                         self.scroll_options('', self.vstatus.mk)
 515                         self.vstatus.change_state(STATE_GET_SELECTION)
 516                         return
 517
 518                 if len(self.vstatus.cur_user) <8:
 519                         if key == 11:
 520                                 self.vstatus.cur_user = ''
 521
 522                                 self.reset_idler()
 523                                 return
 524                         self.vstatus.cur_user += chr(key + ord('0'))
 525                         #logging.info('dob: '+vstatus.cur_user)
 526                         if len(self.vstatus.cur_user) > 5:
 527                                 self.vstatus.mk.set_message('>'+self.vstatus.cur_user)
 528                         else:
 529                                 self.vstatus.mk.set_message('UID: '+self.vstatus.cur_user)
 530
 531                 if len(self.vstatus.cur_user) == 5:
 532                         uid = int(self.vstatus.cur_user)
 533
 534                         if uid == 0:
 535                                 logging.info('user '+self.vstatus.cur_user+' has a bad PIN')
 536                                 pfalken="""
 537         CARRIER DETECTED
 538
 539         CONNECT 128000
 540
 541         Welcome to Picklevision Sytems, Sunnyvale, CA
 542
 543         Greetings Professor Falken.
 544
 545
 546
 547
 548         Shall we play a game?
 549
 550
 551         Please choose from the following menu:
 552
 553         1. Tic-Tac-Toe
 554         2. Chess
 555         3. Checkers
 556         4. Backgammon
 557         5. Poker
 558         6. Toxic and Biochemical Warfare
 559         7. Global Thermonuclear War
 560
 561         7 [ENTER]
 562
 563         Wouldn't you prefer a nice game of chess?
 564
 565         """.replace('\n','    ')
 566                                 self.vstatus.mk.set_messages([(pfalken, False, 10)])
 567                                 self.vstatus.cur_user = ''
 568                                 self.vstatus.cur_pin = ''
 569
 570                                 self.reset_idler(10)
 571
 572                                 return
 573
 574                         # TODO Fix this up do we can check before logging in
 575                         """
 576                         if self.dispense.isDisabled():
 577                                 logging.info('user '+self.vstatus.cur_user+' is disabled')
 578                                 self.vstatus.mk.set_messages(
 579                                         [(' '*11+'ACCOUNT DISABLED'+' '*11, False, 3)])
 580                                 self.vstatus.cur_user = ''
 581                                 self.vstatus.cur_pin = ''
 582
 583                                 self.reset_idler(3)
 584                                 return
 585                         """
 586
 587                         self.vstatus.cur_pin = ''
 588                         self.vstatus.mk.set_message('PIN: ')
 589                         logging.info('need pin for user %s'%self.vstatus.cur_user)
 590                         self.vstatus.change_state(STATE_GETTING_PIN)
 591                         return
 592
 593         """
 594         Triggered when a key is pressed and the machine is idling.
 595         """
 596         def handle_idle_key(self, event, params):
 597                 key = params
 598                 if key == 11:
 599                         self.vstatus.cur_user = ''
 600                         self.dispense.logOut()
 601                         self.reset_idler()
 602                         return
 603
 604                 self.vstatus.change_state(STATE_GETTING_UID)
 605                 self.run_handler(event, params)
 606
 607         """
 608         What to do when there is nothing to do.
 609         """
 610         def handle_idle_tick(self, event, params):
 611                 ### State idling
 612                 if self.vstatus.mk.done():
 613                         self.idle_step()
 614
 615                 if self.vstatus.time_of_next_idler and time() > self.vstatus.time_of_next_idler:
 616                         self.vstatus.time_of_next_idler = time() + 30
 617                         self.choose_idler()
 618
 619                 ###
 620
 621                 self.vstatus.mk.update_display()
 622
 623                 self.vstatus.change_state(STATE_GRANDFATHER_CLOCK)
 624                 self.run_handler(event, params)
 625                 sleep(0.05)
 626
 627         """
 628         Manages the beeps for the grandfather clock
 629         """
 630         def beep_on(self, when, before=0):
 631                 start = int(when - before)
 632                 end = int(when)
 633                 now = int(time())
 634
 635                 if now >= start and now <= end:
 636                         return 1
 637                 return 0
 638
 639         def handle_idle_grandfather_tick(self, event, params):
 640                 ### check for interesting times
 641                 now = localtime()
 642
 643                 quarterhour = mktime([now[0],now[1],now[2],now[3],15,0,now[6],now[7],now[8]])
 644                 halfhour = mktime([now[0],now[1],now[2],now[3],30,0,now[6],now[7],now[8]])
 645                 threequarterhour = mktime([now[0],now[1],now[2],now[3],45,0,now[6],now[7],now[8]])
 646                 fivetothehour = mktime([now[0],now[1],now[2],now[3],55,0,now[6],now[7],now[8]])
 647
 648                 hourfromnow = localtime(time() + 3600)
 649
 650                 #onthehour = mktime([now[0],now[1],now[2],now[3],03,0,now[6],now[7],now[8]])
 651                 onthehour = mktime([hourfromnow[0],hourfromnow[1],hourfromnow[2],hourfromnow[3], \
 652                         0,0,hourfromnow[6],hourfromnow[7],hourfromnow[8]])
 653
 654                 ## check for X seconds to the hour
 655                 ## if case, update counter to 2
 656                 if self.beep_on(onthehour,15) \
 657                         or self.beep_on(halfhour,0) \
 658                         or self.beep_on(quarterhour,0) \
 659                         or self.beep_on(threequarterhour,0) \
 660                         or self.beep_on(fivetothehour,0):
 661                         self.vstatus.change_state(STATE_GRANDFATHER_CLOCK,2)
 662                         self.run_handler(event, params)
 663                 else:
 664                         self.vstatus.change_state(STATE_IDLE)
 665
 666         def handle_grandfather_tick(self, event, params):
 667                 go_idle = 1
 668
 669                 msg = []
 670                 ### we live in interesting times
 671                 now = localtime()
 672
 673                 quarterhour = mktime([now[0],now[1],now[2],now[3],15,0,now[6],now[7],now[8]])
 674                 halfhour = mktime([now[0],now[1],now[2],now[3],30,0,now[6],now[7],now[8]])
 675                 threequarterhour = mktime([now[0],now[1],now[2],now[3],45,0,now[6],now[7],now[8]])
 676                 fivetothehour = mktime([now[0],now[1],now[2],now[3],55,0,now[6],now[7],now[8]])
 677
 678                 hourfromnow = localtime(time() + 3600)
 679
 680         #       onthehour = mktime([now[0],now[1],now[2],now[3],03,0,now[6],now[7],now[8]])
 681                 onthehour = mktime([hourfromnow[0],hourfromnow[1],hourfromnow[2],hourfromnow[3], \
 682                         0,0,hourfromnow[6],hourfromnow[7],hourfromnow[8]])
 683
 684
 685                 #print "when it fashionable to wear a onion on your hip"
 686
 687                 if self.beep_on(onthehour,15):
 688                         go_idle = 0
 689                         next_hour=((hourfromnow[3] + 11) % 12) + 1
 690                         if onthehour - time() < next_hour and onthehour - time() > 0:
 691                                 self.v.beep(0, False)
 692
 693                                 t = int(time())
 694                                 if (t % 2) == 0:
 695                                         msg.append(("DING!", False, None))
 696                                 else:
 697                                         msg.append(("     DING!", False, None))
 698                         elif int(onthehour - time()) == 0:
 699                                 self.v.beep(255, False)
 700                                 msg.append(("   BONG!", False, None))
 701                                 msg.append(("     IT'S "+ str(next_hour) + "O'CLOCK AND ALL IS WELL .....", False, TEXT_SPEED*4))
 702                 elif self.beep_on(halfhour,0):
 703                         go_idle = 0
 704                         self.v.beep(0, False)
 705                         msg.append((" HALFHOUR ", False, 50))
 706                 elif self.beep_on(quarterhour,0):
 707                         go_idle = 0
 708                         self.v.beep(0, False)
 709                         msg.append((" QTR HOUR ", False, 50))
 710                 elif self.beep_on(threequarterhour,0):
 711                         go_idle = 0
 712                         self.v.beep(0, False)
 713                         msg.append((" 3 QTR HR ", False, 50))
 714                 elif self.beep_on(fivetothehour,0):
 715                         go_idle = 0
 716                         self.v.beep(0, False)
 717                         msg.append(("Quick run to your lectures!  Hurry! Hurry!", False, TEXT_SPEED*4))
 718                 else:
 719                         go_idle = 1
 720
 721                 ## check for X seconds to the hour
 722
 723                 if len(msg):
 724                         self.vstatus.mk.set_messages(msg)
 725                         sleep(1)
 726
 727                 self.vstatus.mk.update_display()
 728                 ## if no longer case, return to idle
 729
 730                 ## change idler to be clock
 731                 if go_idle and self.vstatus.mk.done():
 732                         self.vstatus.change_state(STATE_IDLE,1)
 733
 734         """
 735         What to do when the door is open.
 736         """
 737         def handle_door_idle(self, event, params):
 738                 def twiddle(clock,v,wise = 2):
 739                         if (clock % 4 == 0):
 740                                 v.display("-FEED  ME-")
 741                         elif (clock % 4 == 1+wise):
 742                                 v.display("\\FEED  ME/")
 743                         elif (clock % 4 == 2):
 744                                 v.display("-FEED  ME-")
 745                         elif (clock % 4 == 3-wise):
 746                                 v.display("/FEED  ME\\")
 747
 748                 # don't care right now.
 749                 now = int(time())
 750
 751                 if ((now % 60 % 2) == 0):
 752                         twiddle(now, self.v)
 753                 else:
 754                         twiddle(now, self.v, wise=0)
 755
 756         """
 757         What to do when the door is opened or closed.
 758         """
 759         def handle_door_event(self, event, params):
 760                 if params == 0:  #door open
 761                         self.vstatus.change_state(STATE_DOOR_OPENING)
 762                         logging.warning("Entering open door mode")
 763                         self.v.display("-FEED  ME-")
 764                         #door_open_mode(v);
 765                         self.dispense.logOut()
 766                         self.vstatus.cur_user = ''
 767                         self.vstatus.cur_pin = ''
 768                 elif params == 1:  #door closed
 769                         self.vstatus.change_state(STATE_DOOR_CLOSING)
 770                         self.reset_idler(3)
 771
 772                         logging.warning('Leaving open door mode')
 773                         self.v.display("-YUM YUM!-")
 774
 775         """
 776         Triggered when a user swipes their caed, and the machine is logged out.
 777         """
 778         def handle_mifare_event(self, event, params):
 779                 card_id = params
 780                 # Translate card_id into uid.
 781                 if card_id == None or card_id == self._last_card_id:
 782                         return
 783
 784                 self._last_card_id = card_id
 785
 786                 if not self.dispense.authMifareCard(card_id):
 787                         self.v.beep(40, False)
 788                         self.vstatus.mk.set_messages(
 789                                 [(self.center('BAD CARD'), False, 1.0),
 790                                  (self.center('SORRY'), False, 0.5)])
 791                         self.vstatus.cur_user = ''
 792                         self.vstatus.cur_pin = ''
 793                         self._last_card_id = -1
 794
 795                         self.reset_idler(2)
 796                         return
 797                 elif self.dispense.isDisabled():
 798                         logging.info('Mapped card id to uid %s'%self.dispense.getUsername())
 799                         self.v.beep(40, False)
 800                         self.vstatus.mk.set_messages(
 801                                 [(self.center('ACCT DISABLED'), False, 1.0),
 802                                  (self.center('SORRY'), False, 0.5)])
 803                         self.dispense.logOut()
 804                         self.reset_idler(2)
 805                         return
 806                 else:
 807                         logging.info('Mapped card id to uid %s'%self.dispense.getUsername())
 808                         self.vstatus.cur_user = '----'
 809                         self.vstatus.username = self.dispense.getUsername()
 810                         self.vstatus.cur_selection = ''
 811                         self.vstatus.change_state(STATE_GET_SELECTION)
 812                         self.scroll_options(self.vstatus.username, self.vstatus.mk, True)
 813                         return
 814
 815         """
 816         Triggered when a user swipes their card and the machine is logged in.
 817         """
 818         def handle_mifare_add_user_event(self, event, params):
 819                 card_id = params
 820
 821                 # Translate card_id into uid.
 822                 if card_id == None or card_id == self._last_card_id:
 823                         return
 824
 825                 self._last_card_id = card_id
 826
 827                 if not self.dispense.addCard(card_id):
 828                         self.vstatus.mk.set_messages(
 829                                 [(self.center('ALREADY'), False, 0.5),
 830                                  (self.center('ENROLLED'), False, 0.5)])
 831                 else:
 832                         self.vstatus.mk.set_messages(
 833                                 [(self.center('CARD'), False, 0.5),
 834                                  (self.center('ENROLLED'), False, 0.5)])
 835
 836         def return_to_idle(self, event, params):
 837                 self.reset_idler()
 838
 839         """
 840         Maps what to do when the state changes.
 841         """
 842         def create_state_table(self):
 843                 self.vstatus.state_table[(STATE_IDLE,TICK,1)] = self.handle_idle_tick
 844                 self.vstatus.state_table[(STATE_IDLE,KEY,1)] = self.handle_idle_key
 845                 self.vstatus.state_table[(STATE_IDLE,DOOR,1)] = self.handle_door_event
 846                 self.vstatus.state_table[(STATE_IDLE,MIFARE,1)] = self.handle_mifare_event
 847
 848                 self.vstatus.state_table[(STATE_DOOR_OPENING,TICK,1)] = self.handle_door_idle
 849                 self.vstatus.state_table[(STATE_DOOR_OPENING,DOOR,1)] = self.handle_door_event
 850                 self.vstatus.state_table[(STATE_DOOR_OPENING,KEY,1)] = self.do_nothing
 851                 self.vstatus.state_table[(STATE_DOOR_OPENING,MIFARE,1)] = self.do_nothing
 852
 853                 self.vstatus.state_table[(STATE_DOOR_CLOSING,TICK,1)] = self.return_to_idle
 854                 self.vstatus.state_table[(STATE_DOOR_CLOSING,DOOR,1)] = self.handle_door_event
 855                 self.vstatus.state_table[(STATE_DOOR_CLOSING,KEY,1)] = self.do_nothing
 856                 self.vstatus.state_table[(STATE_DOOR_CLOSING,MIFARE,1)] = self.do_nothing
 857
 858                 self.vstatus.state_table[(STATE_GETTING_UID,TICK,1)] = self.handle_getting_uid_idle
 859                 self.vstatus.state_table[(STATE_GETTING_UID,DOOR,1)] = self.handle_door_event
 860                 self.vstatus.state_table[(STATE_GETTING_UID,KEY,1)] = self.handle_getting_uid_key
 861                 self.vstatus.state_table[(STATE_GETTING_UID,MIFARE,1)] = self.handle_mifare_event
 862
 863                 self.vstatus.state_table[(STATE_GETTING_PIN,TICK,1)] = self.handle_getting_pin_idle
 864                 self.vstatus.state_table[(STATE_GETTING_PIN,DOOR,1)] = self.handle_door_event
 865                 self.vstatus.state_table[(STATE_GETTING_PIN,KEY,1)] = self.handle_getting_pin_key
 866                 self.vstatus.state_table[(STATE_GETTING_PIN,MIFARE,1)] = self.handle_mifare_event
 867
 868                 self.vstatus.state_table[(STATE_GET_SELECTION,TICK,1)] = self.handle_get_selection_idle
 869                 self.vstatus.state_table[(STATE_GET_SELECTION,DOOR,1)] = self.handle_door_event
 870                 self.vstatus.state_table[(STATE_GET_SELECTION,KEY,1)] = self.handle_get_selection_key
 871                 self.vstatus.state_table[(STATE_GET_SELECTION,MIFARE,1)] = self.handle_mifare_add_user_event
 872
 873                 self.vstatus.state_table[(STATE_GRANDFATHER_CLOCK,TICK,1)] = self.handle_idle_grandfather_tick
 874                 self.vstatus.state_table[(STATE_GRANDFATHER_CLOCK,TICK,2)] = self.handle_grandfather_tick
 875                 self.vstatus.state_table[(STATE_GRANDFATHER_CLOCK,DOOR,1)] = self.handle_door_event
 876                 self.vstatus.state_table[(STATE_GRANDFATHER_CLOCK,DOOR,2)] = self.handle_door_event
 877                 self.vstatus.state_table[(STATE_GRANDFATHER_CLOCK,KEY,1)] = self.do_nothing
 878                 self.vstatus.state_table[(STATE_GRANDFATHER_CLOCK,KEY,2)] = self.do_nothing
 879                 self.vstatus.state_table[(STATE_GRANDFATHER_CLOCK,MIFARE,1)] = self.handle_mifare_event
 880
 881         """
 882         Get what to do on a state change.
 883         """
 884         def get_state_table_handler(self, state, event, counter):
 885                 return self.vstatus.state_table[(state,event,counter)]
 886
 887         def time_to_next_update(self):
 888                 idle_update = self.vstatus.time_of_next_idlestep - time()
 889                 if not self.vstatus.mk.done() and self.vstatus.mk.next_update is not None:
 890                         mk_update = self.vstatus.mk.next_update - time()
 891                         if mk_update < idle_update:
 892                                 idle_update = mk_update
 893                 return idle_update
 894
 895         def run_forever(self, rfh, wfh, options, cf):
 896                 self.v = VendingMachine(rfh, wfh, USE_MIFARE)
 897                 self.dispense = Dispense()
 898                 self.vstatus = VendState(self.v)
 899                 self.create_state_table()
 900
 901                 logging.debug('PING is ' + str(self.v.ping()))
 902
 903                 self.setup_idlers()
 904                 self.reset_idler()
 905
 906                 while True:
 907                         timeout = self.time_to_next_update()
 908                         (event, params) = self.v.next_event(timeout)
 909                         self.run_handler(event, params)
 910
 911         def run_handler(self, event, params):
 912                 handler = self.get_state_table_handler(self.vstatus.state,event,self.vstatus.counter)
 913                 if handler:
 914                         handler(event, params)
 915
 916 """
 917 Connect to the machine.
 918 """
 919 def connect_to_vend(options, cf):
 920
 921         if options.use_lat:
 922                 logging.info('Connecting to vending machine using LAT')
 923                 latclient = LATClient(service = cf.ServiceName, password = cf.ServicePassword, server_name = cf.ServerName, connect_password = cf.ConnectPassword, priv_password = cf.PrivPassword)
 924                 rfh, wfh = latclient.get_fh()
 925         elif options.use_serial:
 926                 # Open vending machine via serial.
 927                 logging.info('Connecting to vending machine using serial')
 928                 serialclient = SerialClient(port = '/dev/ttyS1', baud = 9600)
 929                 rfh,wfh = serialclient.get_fh()
 930         else:
 931                 #(rfh, wfh) = popen2('../../virtualvend/vvend.py')
 932                 logging.info('Connecting to virtual vending machine on %s:%d'%(options.host,options.port))
 933                 import socket
 934                 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
 935                 sock.connect((options.host, options.port))
 936                 rfh = sock.makefile('r')
 937                 wfh = sock.makefile('w')
 938                 global USE_MIFARE
 939                 USE_MIFARE = 0
 940
 941         return rfh, wfh
 942
 943 """
 944 Parse arguments from the command line
 945 """
 946 def parse_args():
 947         from optparse import OptionParser
 948
 949         op = OptionParser(usage="%prog [OPTION]...")
 950         op.add_option('-f', '--config-file', default='/etc/dispense2/servers.conf', metavar='FILE', dest='config_file', help='use the specified config file instead of /etc/dispense/servers.conf')
 951         op.add_option('--serial', action='store_true', default=False, dest='use_serial', help='use the serial port')
 952         op.add_option('--lat', action='store_true', default=False, dest='use_lat', help='use LAT')
 953         op.add_option('--virtualvend', action='store_false', default=True, dest='use_serial', help='use the virtual vending server instead of LAT')
 954         op.add_option('-n', '--hostname', dest='host', default='localhost', help='the hostname to connect to for virtual vending machine mode (default: localhost)')
 955         op.add_option('-p', '--port', dest='port', default=5150, type='int', help='the port number to connect to (default: 5150)')
 956         op.add_option('-l', '--log-file', metavar='FILE', dest='log_file', default='', help='log output to the specified file')
 957         op.add_option('-s', '--syslog', dest='syslog', metavar='FACILITY', default=None, help='log output to given syslog facility')
 958         op.add_option('-d', '--daemon', dest='daemon', action='store_true', default=False, help='run as a daemon')
 959         op.add_option('-v', '--verbose', dest='verbose', action='store_true', default=False, help='spit out lots of debug output')
 960         op.add_option('-q', '--quiet', dest='quiet', action='store_true', default=False, help='only report errors')
 961         op.add_option('--pid-file', dest='pid_file', metavar='FILE', default='', help='store daemon\'s pid in the given file')
 962         options, args = op.parse_args()
 963
 964         if len(args) != 0:
 965                 op.error('extra command line arguments: ' + ' '.join(args))
 966
 967         return options
 968
 969 def create_pid_file(name):
 970         try:
 971                 pid_file = file(name, 'w')
 972                 pid_file.write('%d\n'%os.getpid())
 973                 pid_file.close()
 974         except IOError, e:
 975                 logging.warning('unable to write to pid file '+name+': '+str(e))
 976
 977 def set_stuff_up():
 978         def do_nothing(signum, stack):
 979                 signal.signal(signum, do_nothing)
 980         def stop_server(signum, stack): raise KeyboardInterrupt
 981         signal.signal(signal.SIGHUP, do_nothing)
 982         signal.signal(signal.SIGTERM, stop_server)
 983         signal.signal(signal.SIGINT, stop_server)
 984
 985         options = parse_args()
 986         config_opts = VendConfigFile(options.config_file, config_options)
 987         if options.daemon: become_daemon()
 988         set_up_logging(options)
 989         if options.pid_file != '': create_pid_file(options.pid_file)
 990
 991         return options, config_opts
 992
 993 def clean_up_nicely(options, config_opts):
 994         if options.pid_file != '':
 995                 try:
 996                         os.unlink(options.pid_file)
 997                         logging.debug('Removed pid file '+options.pid_file)
 998                 except OSError: pass  # if we can't delete it, meh
 999
1000 def set_up_logging(options):
1001         logger = logging.getLogger()
1002
1003         if not options.daemon:
1004                 stderr_logger = logging.StreamHandler(sys.stderr)
1005                 stderr_logger.setFormatter(logging.Formatter('%(levelname)s: %(message)s'))
1006                 logger.addHandler(stderr_logger)
1007
1008         if options.log_file != '':
1009                 try:
1010                         file_logger = logging.FileHandler(options.log_file)
1011                         file_logger.setFormatter(logging.Formatter('%(asctime)s %(levelname)s: %(message)s'))
1012                         logger.addHandler(file_logger)
1013                 except IOError, e:
1014                         logger.warning('unable to write to log file '+options.log_file+': '+str(e))
1015
1016         if options.syslog != None:
1017                 sys_logger = logging.handlers.SysLogHandler('/dev/log', options.syslog)
1018                 sys_logger.setFormatter(logging.Formatter('vendserver[%d]'%(os.getpid()) + ' %(levelname)s: %(message)s'))
1019                 logger.addHandler(sys_logger)
1020
1021         if options.quiet:
1022                 logger.setLevel(logging.WARNING)
1023         elif options.verbose:
1024                 logger.setLevel(logging.DEBUG)
1025         else:
1026                 logger.setLevel(logging.INFO)
1027
1028 def become_daemon():
1029         dev_null = file('/dev/null')
1030         fd = dev_null.fileno()
1031         os.dup2(fd, 0)
1032         os.dup2(fd, 1)
1033         os.dup2(fd, 2)
1034         try:
1035                 if os.fork() != 0:
1036                         sys.exit(0)
1037                 os.setsid()
1038         except OSError, e:
1039                 raise SystemExit('failed to fork: '+str(e))
1040
1041 def do_vend_server(options, config_opts):
1042         while True:
1043                 try:
1044                         rfh, wfh = connect_to_vend(options, config_opts)
1045                 except (SerialClientException, socket.error), e:
1046                         (exc_type, exc_value, exc_traceback) = sys.exc_info()
1047                         del exc_traceback
1048                         logging.error("Connection error: "+str(exc_type)+" "+str(e))
1049                         logging.info("Trying again in 5 seconds.")
1050                         sleep(5)
1051                         continue
1052
1053 #               run_forever(rfh, wfh, options, config_opts)
1054
1055                 try:
1056                         vserver = VendServer()
1057                         vserver.run_forever(rfh, wfh, options, config_opts)
1058                 except VendingException:
1059                         logging.error("Connection died, trying again...")
1060                         logging.info("Trying again in 5 seconds.")
1061                         sleep(5)
1062
1063
1064 def main(argv=None):
1065         options, config_opts = set_stuff_up()
1066         while True:
1067                 try:
1068                         logging.warning('Starting Vend Server')
1069                         do_vend_server(options, config_opts)
1070                         logging.error('Vend Server finished unexpectedly, restarting')
1071                 except KeyboardInterrupt:
1072                         logging.info("Killed by signal, cleaning up")
1073                         clean_up_nicely(options, config_opts)
1074                         logging.warning("Vend Server stopped")
1075                         break
1076                 except SystemExit:
1077                         break
1078                 except:
1079                         (exc_type, exc_value, exc_traceback) = sys.exc_info()
1080                         tb = format_tb(exc_traceback, 20)
1081                         del exc_traceback
1082
1083                         logging.critical("Uh-oh, unhandled " + str(exc_type) + " exception")
1084                         logging.critical("Message: " + str(exc_value))
1085                         logging.critical("Traceback:")
1086                         for event in tb:
1087                                 for line in event.split('\n'):
1088                                         logging.critical('    '+line)
1089                         logging.critical("This message should be considered a bug in the Vend Server.")
1090                         logging.critical("Please report this to someone who can fix it.")
1091                         sleep(10)
1092                         logging.warning("Trying again anyway (might not help, but hey...)")
1093
1094 if __name__ == '__main__':
1095         sys.exit(main())