#!/usr/bin/python
-import sys, os, string, socket, time, re
+import sys, os, string, time, re, pwd
import pg
from LATClient import LATClient
from VendingMachine import VendingMachine
+GREETING = 'UCC SNACKS'
+PIN_LENGTH = 4
+
class DispenseDatabase:
def __init__(self, vending_machine):
self.vending_machine = vending_machine
self.process_requests()
notify = self.db.getnotify()
+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 False
+ 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 != 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:
+ v.wait_for_events(1)
+ 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!")
+ time.sleep(1)
+ return
+
if __name__ == '__main__':
# Open vending machine via LAT
latclient = LATClient(service = 'VEND', password = 'dmscptd')
db = DispenseDatabase(v)
db.process_requests()
+ cur_user = ''
+ cur_pin = ''
+ cur_selection = ''
+
+ scrolling_message = [GREETING]
+ scrolling_wraps = False
+ need_repaint = True
+ timeout = None
+ last_tick = time.time()
+
while True:
+ if timeout != None and timeout > 0 and time.time() > last_tick+1:
+ timeout -= 1
+ if len(scrolling_message) > 0:
+ need_repaint = True
+ if need_repaint and len(scrolling_message) > 0:
+ v.display(scrolling_message[0])
+ if scrolling_wraps:
+ scrolling_message.append(scrolling_message[0])
+ del scrolling_message[0]
+ need_repaint = False
+
v.wait_for_events(1)
+ while True:
+ e = v.next_event()
+ if e == None: break
+ (event, params) = e
+ if event == DOOR:
+ if params == 0:
+ door_open_mode(v);
+ cur_user = ''
+ cur_pin = ''
+ scrolling_message = [GREETING]
+ scrolling_wraps = False
+ need_repaint = True
+ 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 = ''
+ scrolling_message = [GREETING]
+ scrolling_wraps = False
+ need_repaint = True
+ continue
+ cur_user += chr(key + ord('0'))
+ v.display('UID: '+cur_user)
+ if len(cur_user) == 5:
+ uid = int(cur_user)
+ if not has_good_pin(uid):
+ v.display('PIN NO GOOD')
+ time.sleep(1)
+ continue
+ v.display('PIN: ')
+ continue
+ elif len(cur_pin) < PIN_LENGTH:
+ if key == 11:
+ if cur_pin == '':
+ cur_user = ''
+ scrolling_message = [GREETING]
+ scrolling_wraps = False
+ need_repaint = True
+ continue
+ cur_pin = ''
+ v.display('PIN: ')
+ continue
+ cur_pin += chr(key + ord('0'))
+ v.display('PIN: '+'X'*len(cur_pin))
+ if len(cur_pin) == PIN_LENGTH:
+ name = verify_user_pin(int(cur_user), int(cur_pin))
+ if name:
+ v.beep(0, False)
+ cur_selection = ''
+
+ scrolling_message = [' WELCOME ', name]
+ scrolling_message.append('OR A SNACK')
+ scrolling_wraps = True
+ need_repaint = True
+ else:
+ v.beep(255, False)
+ scrolling_message = [' BAD PIN ', ' SORRY ', GREETING]
+ scrolling_wraps = False
+ need_repaint = True
+
+ cur_user = ''
+ cur_pin = ''
+ continue
+ elif len(cur_selection) < 2:
+ if key == 11:
+ if cur_selection == '':
+ cur_pin = ''
+ cur_user = ''
+ v.display(GREETING)
+ continue
+ cur_selection += chr(key + ord('0'))
+ if len(cur_selection) == 2:
+ make_selection(cur_selection)
+
+
db.handle_events()
git.ucc.asn.au / uccvend-vendserver.git / blobdiff
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