X-Git-Url: https://git.ucc.asn.au/?p=uccvend-vendserver.git;a=blobdiff_plain;f=sql-edition%2Fservers%2FVendServer.py;h=ce8253517b65aca2233b75a84563261b103ffeba;hp=57a26828471779d39b2f2b52679e40285d6f65fd;hb=14220792cd48d1600c0d4677ce37006fd1adb204;hpb=34659fae1f24885353883f43ee9f7acb64fa0629 diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py index 57a2682..ce82535 100755 --- a/sql-edition/servers/VendServer.py +++ b/sql-edition/servers/VendServer.py @@ -1,44 +1,920 @@ #!/usr/bin/python +# vim:ts=4 -import sys, os, string, socket, time +USE_DB = 0 + +import ConfigParser +import sys, os, string, re, pwd, signal, math +import logging, logging.handlers +from traceback import format_tb +if USE_DB: import pg +from time import time, sleep, mktime, localtime from popen2 import popen2 -from pyPgSQL import PgSQL -from LATClient import LATClient - -class VendingMachine: - def __init__(self, rfh, wfh): - self.rfh = rfh - self.wfh = wfh - self.wfh.write('\n') - self.await_prompt() - - def await_prompt(self): - self.wfh.flush() - state = 0 - s = '' - while state != 3: - s = self.rfh.read(1) - if s == '': raise Exception - if s == '\n' and state == 0: state = 1 - if s == '#' and state == 1: state = 2 - if s == ' ' and state == 2: state = 3 - - def get_response(self): - self.wfh.flush() +from LATClient import LATClient, LATClientException +from SerialClient import SerialClient, SerialClientException +from VendingMachine import VendingMachine, VendingException +from MessageKeeper import MessageKeeper +from HorizScroll import HorizScroll +from random import random, seed +from Idler import TrainIdler,GrayIdler,StringIdler,ClockIdler,FortuneIdler,FileIdler,PipeIdler +import socket +from posix import geteuid + +CREDITS=""" +This vending machine software brought to you by: +Bernard Blackham +Mark Tearle +Nick Bannon +Cameron Patrick +and a collective of hungry alpacas. + + + +For a good time call +61 8 6488 3901 + + + +""" + +GREETING = 'UCC SNACKS' +PIN_LENGTH = 4 + +DOOR = 1 +SWITCH = 2 +KEY = 3 +TICK = 4 + + +STATE_IDLE = 1 +STATE_DOOR_OPENING = 2 +STATE_DOOR_CLOSING = 3 +STATE_GETTING_UID = 4 +STATE_GETTING_PIN = 5 +STATE_GET_SELECTION = 6 +STATE_GRANDFATHER_CLOCK = 7 + +class DispenseDatabaseException(Exception): pass + +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): + logging.debug('database 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: + raise DispenseDatabaseException('Failed to query database: %s\n'%(db_err.strip())) + for (id, slot) in outstanding: + (worked, code, string) = self.vending_machine.vend(slot) + logging.debug (str((worked, code, string))) + if worked: + query = 'SELECT vend_success(%s)'%id + self.db.query(query).getresult() + else: + 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 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: + logging.info('getting pin for uid %d: user not in password file'%uid) + return None + if info.pw_dir == None: return False + pinfile = os.path.join(info.pw_dir, '.pin') + try: + s = os.stat(pinfile) + except OSError: + logging.info('getting pin for uid %d: .pin not found in home directory'%uid) + return None + if s.st_mode & 077: + logging.info('getting pin for uid %d: .pin has wrong permissions'%uid) + return None + try: + f = file(pinfile) + except IOError: + logging.info('getting pin for uid %d: I cannot read pin file'%uid) + return None + pinstr = f.readline() + f.close() + if not re.search('^'+'[0-9]'*PIN_LENGTH+'$', pinstr): + logging.info('getting pin for uid %d: %s not a good pin'%(uid,repr(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) + logging.info('accepted pin for uid %d (%s)'%(uid,info.pw_name)) + return info.pw_name + else: + logging.info('refused pin for uid %d'%(uid)) + return None + + +def cookie(v): + seed(time()) + messages = [' WASSUP! ', 'PINK FISH ', ' SECRETS ', ' ESKIMO ', ' FORTUNES ', 'MORE MONEY'] + choice = int(random()*len(messages)) + msg = messages[choice] + left = range(len(msg)) + for i in range(len(msg)): + if msg[i] == ' ': left.remove(i) + reveal = 1 + while left: s = '' - while s == '': - s = self.rfh.readline() - if s == '': return None - s = s.strip('\r\n') - return s + for i in range(0, len(msg)): + if i in left: + if reveal == 0: + left.remove(i) + s += msg[i] + else: + s += chr(int(random()*26)+ord('A')) + reveal += 1 + reveal %= 17 + else: + s += msg[i] + v.display(s) - def ping(self): - self.wfh.write('PING\n') - return self.get_response() +def center(str): + LEN = 10 + return ' '*((LEN-len(str))/2)+str -if __name__ == '__main__': - # Open vending machine via LAT - latclient = LATClient(service = 'VEND', password = 'dmscptd') - (rfh, wfh) = latclient.get_fh() + + +idlers = [] +idler = None + +def setup_idlers(v): + global idlers, idler + idlers = [ + GrayIdler(v), + StringIdler(v, text="Kill 'em all", repeat=False), + GrayIdler(v,one="*",zero="-"), + StringIdler(v, text=CREDITS), + GrayIdler(v,one="/",zero="\\"), + ClockIdler(v), + GrayIdler(v,one="X",zero="O"), + FileIdler(v, '/usr/share/common-licenses/GPL-2'), + GrayIdler(v,one="*",zero="-",reorder=1), + StringIdler(v, text=str(math.pi) + " "), + ClockIdler(v), + GrayIdler(v,one="/",zero="\\",reorder=1), + StringIdler(v, text=str(math.e) + " "), + GrayIdler(v,one="X",zero="O",reorder=1), + StringIdler(v, text=" I want some pizza - please call Pizza Hut Shenton Park on +61 8 9381 9979 - and order as Quinn - I am getting really hungry", repeat=False), + PipeIdler(v, "/usr/bin/ypcat", "passwd"), + FortuneIdler(v), + ClockIdler(v), + StringIdler(v), + TrainIdler(v), + ] + disabled = [ + ] + idler = choose_idler() + +def choose_idler(): + global idlers, idler + iiindex = 0 + + if idler: + iiindex = idlers.index(idler) + + iilen = len(idlers) + + move = int(random()*len(idlers)) + 1 + + while move >= 0: + idler = idlers[( (iiindex + 1) % iilen)] + move = move - idler.affinity() + + idler.reset() + +def idle_step(): + global idler + if idler.finished(): + choose_idler() + idler.next() + +class VendState: + def __init__(self,v): + self.state_table = {} + self.state = STATE_IDLE + self.counter = 0 + + self.mk = MessageKeeper(v) + self.cur_user = '' + self.cur_pin = '' + self.username = '' + self.cur_selection = '' + self.time_to_autologout = None + + self.time_to_idle = None + + self.last_timeout_refresh = None + + + +def handle_tick_event(event, params, v, vstatus): + # don't care right now. + pass + +def handle_switch_event(event, params, v, vstatus): + # don't care right now. + pass + + +def do_nothing(state, event, params, v, vstatus): + print "doing nothing (s,e,p)", state, " ", event, " ", params + pass + +def handle_getting_uid_idle(state, event, params, v, vstatus): + # don't care right now. + pass + +def handle_getting_pin_idle(state, event, params, v, vstatus): + # don't care right now. + pass + +def handle_get_selection_idle(state, event, params, v, vstatus): + # don't care right now. + ### + ### State logging out .. + if vstatus.time_to_autologout != None: + time_left = vstatus.time_to_autologout - time() + if time_left < 6 and (vstatus.last_timeout_refresh is None or vstatus.last_timeout_refresh > time_left): + vstatus.mk.set_message('LOGOUT: '+str(int(time_left))) + vstatus.last_timeout_refresh = int(time_left) + vstatus.cur_selection = '' + + if vstatus.time_to_autologout != None and vstatus.time_to_autologout - time() <= 0: + vstatus.time_to_autologout = None + vstatus.cur_user = '' + vstatus.cur_pin = '' + vstatus.cur_selection = '' + + idle_in(vstatus,2) + vstatus.state = STATE_IDLE + + vstatus.mk.set_message(GREETING) + + ### State fully logged out ... reset variables + if vstatus.time_to_autologout and not vstatus.mk.done(): + vstatus.time_to_autologout = None + if vstatus.cur_user == '' and vstatus.time_to_autologout: + vstatus.time_to_autologout = None + + ### State logged in + if len(vstatus.cur_pin) == PIN_LENGTH and vstatus.mk.done() and vstatus.time_to_autologout == None: + # start autologout + vstatus.time_to_autologout = time() + 15 + vstatus.last_timeout_refresh = None + + ### State logged out ... after normal logout?? + # perhaps when logged in? + if vstatus.time_to_idle is not None and vstatus.cur_user != '': + vstatus.time_to_idle = None + + + ## FIXME - this may need to be elsewhere..... + # need to check + vstatus.mk.update_display() + + + +def handle_get_selection_key(state, event, params, v, vstatus): + key = params + if len(vstatus.cur_selection) == 0: + if key == 11: + vstatus.cur_pin = '' + vstatus.cur_user = '' + vstatus.cur_selection = '' + + idle_in(vstatus,2) + vstatus.state = STATE_IDLE + + vstatus.mk.set_messages( + [(center('BYE!'), False, 1.5), + (GREETING, False, None)]) + return + vstatus.cur_selection += chr(key + ord('0')) + vstatus.mk.set_message('SELECT: '+vstatus.cur_selection) + vstatus.time_to_autologout = None + elif len(vstatus.cur_selection) == 1: + if key == 11: + vstatus.cur_selection = '' + vstatus.time_to_autologout = None + scroll_options(vstatus.username, vstatus.mk) + return + else: + vstatus.cur_selection += chr(key + ord('0')) + make_selection(v,vstatus) + vstatus.cur_selection = '' + vstatus.time_to_autologout = time() + 8 + vstatus.last_timeout_refresh = None + +def make_selection(v, vstatus): + # should use sudo here + if vstatus.cur_selection == '55': + vstatus.mk.set_message('OPENSESAME') + logging.info('dispensing a door for %s'%vstatus.username) + if geteuid() == 0: + ret = os.system('su - "%s" -c "dispense door"'%vstatus.username) + else: + ret = os.system('dispense door') + if ret == 0: + logging.info('door opened') + vstatus.mk.set_message(center('DOOR OPEN')) + else: + logging.warning('user %s tried to dispense a bad door'%vstatus.username) + vstatus.mk.set_message(center('BAD DOOR')) + sleep(1) + elif vstatus.cur_selection == '91': + cookie(v) + elif vstatus.cur_selection == '99': + scroll_options(vstatus.username, vstatus.mk) + vstatus.cur_selection = '' + return + elif vstatus.cur_selection[1] == '8': + v.display('GOT COKE?') + if ((os.system('su - "%s" -c "dispense %s"'%(vstatus.username, vstatus.cur_selection[0])) >> 8) != 0): + v.display('SEEMS NOT') + else: + v.display('GOT COKE!') + else: + v.display(vstatus.cur_selection+' - $1.00') + if ((os.system('su - "%s" -c "dispense snack"'%(vstatus.username)) >> 8) == 0): + v.vend(vstatus.cur_selection) + v.display('THANK YOU') + else: + v.display('NO MONEY?') + sleep(1) + + +def handle_getting_pin_key(state, event, params, v, vstatus): + #print "handle_getting_pin_key (s,e,p)", state, " ", event, " ", params + key = params + if len(vstatus.cur_pin) < PIN_LENGTH: + if key == 11: + if vstatus.cur_pin == '': + vstatus.cur_user = '' + vstatus.mk.set_message(GREETING) + + idle_in(vstatus,5) + vstatus.state = STATE_IDLE + + return + vstatus.cur_pin = '' + vstatus.mk.set_message('PIN: ') + return + vstatus.cur_pin += chr(key + ord('0')) + vstatus.mk.set_message('PIN: '+'X'*len(vstatus.cur_pin)) + if len(vstatus.cur_pin) == PIN_LENGTH: + vstatus.username = verify_user_pin(int(vstatus.cur_user), int(vstatus.cur_pin)) + if vstatus.username: + v.beep(0, False) + vstatus.cur_selection = '' + vstatus.state = STATE_GET_SELECTION + scroll_options(vstatus.username, vstatus.mk, True) + return + else: + v.beep(40, False) + vstatus.mk.set_messages( + [(center('BAD PIN'), False, 1.0), + (center('SORRY'), False, 0.5), + (GREETING, False, None)]) + vstatus.cur_user = '' + vstatus.cur_pin = '' + + idle_in(vstatus,5) + vstatus.state = STATE_IDLE + + return + + +def handle_getting_uid_key(state, event, params, v, vstatus): + #print "handle_getting_uid_key (s,e,p)", state, " ", event, " ", params + key = params + # complicated key handling here: + if len(vstatus.cur_user) < 5: + if key == 11: + vstatus.cur_user = '' + vstatus.mk.set_message(GREETING) + + idle_in(vstatus,5) + vstatus.state = STATE_IDLE + return + + vstatus.cur_user += chr(key + ord('0')) + vstatus.mk.set_message('UID: '+vstatus.cur_user) + + if len(vstatus.cur_user) == 5: + uid = int(vstatus.cur_user) + if not has_good_pin(uid): + logging.info('user '+vstatus.cur_user+' has a bad PIN') + vstatus.mk.set_messages( + [(' '*10+'INVALID PIN SETUP'+' '*10, False, 3), + (GREETING, False, None)]) + vstatus.cur_user = '' + vstatus.cur_pin = '' + + idle_in(vstatus,5) + vstatus.state = STATE_IDLE + + return + + + vstatus.cur_pin = '' + vstatus.mk.set_message('PIN: ') + logging.info('need pin for user %s'%vstatus.cur_user) + vstatus.state = STATE_GETTING_PIN + return + + +def handle_idle_key(state, event, params, v, vstatus): + #print "handle_idle_key (s,e,p)", state, " ", event, " ", params + + key = params + + if key == 11: + vstatus.cur_user = '' + vstatus.mk.set_message(GREETING) + idle_in(vstatus,5) + choose_idler() + return + + vstatus.state = STATE_GETTING_UID + run_handler(event, key, v, vstatus) + + +def handle_idle_tick(state, event, params, v, vstatus): + ### State logged out ... initiate idler in 5 (first start?) + if vstatus.time_to_idle == None and vstatus.cur_user == '': + vstatus.time_to_idle = time() + 5 + choose_idler() + + ### State idling + + if vstatus.time_to_idle is not None and time() > vstatus.time_to_idle: + idle_step() + + if vstatus.time_to_idle is not None and time() > vstatus.time_to_idle + 30: + vstatus.time_to_idle = time() + choose_idler() + + ### + + vstatus.mk.update_display() + + vstatus.state = STATE_GRANDFATHER_CLOCK + run_handler(event, params, v, vstatus) + +def beep_on(when, before=0): + start = int(when - before) + end = int(when) + now = int(time()) + + if now >= start and now <= end: + return 1 + return 0 + +def handle_idle_grandfather_tick(state, event, params, v, vstatus): + ### check for interesting times + now = localtime() + + quarterhour = mktime([now[0],now[1],now[2],now[3],15,0,now[6],now[7],now[8]]) + halfhour = mktime([now[0],now[1],now[2],now[3],30,0,now[6],now[7],now[8]]) + threequarterhour = mktime([now[0],now[1],now[2],now[3],45,0,now[6],now[7],now[8]]) + fivetothehour = mktime([now[0],now[1],now[2],now[3],55,0,now[6],now[7],now[8]]) + + hourfromnow = localtime(time() + 3600) + + #onthehour = mktime([now[0],now[1],now[2],now[3],27,0,now[6],now[7],now[8]]) + onthehour = mktime([hourfromnow[0],hourfromnow[1],hourfromnow[2],hourfromnow[3], \ + 0,0,hourfromnow[6],hourfromnow[7],hourfromnow[8]]) + + ## check for X seconds to the hour + ## if case, update counter to 2 + if beep_on(onthehour,15) \ + or beep_on(halfhour,0) \ + or beep_on(quarterhour,0) \ + or beep_on(threequarterhour,0) \ + or beep_on(fivetothehour,0): + vstatus.state = STATE_GRANDFATHER_CLOCK + vstatus.counter = 2 + run_handler(event, params, v, vstatus) + else: + vstatus.state = STATE_IDLE + +def handle_grandfather_tick(state, event, params, v, vstatus): + go_idle = 1 + + msg = [] + ### we live in interesting times + now = localtime() + + quarterhour = mktime([now[0],now[1],now[2],now[3],15,0,now[6],now[7],now[8]]) + halfhour = mktime([now[0],now[1],now[2],now[3],30,0,now[6],now[7],now[8]]) + threequarterhour = mktime([now[0],now[1],now[2],now[3],45,0,now[6],now[7],now[8]]) + fivetothehour = mktime([now[0],now[1],now[2],now[3],55,0,now[6],now[7],now[8]]) + + hourfromnow = localtime(time() + 3600) + + #onthehour = mktime([now[0],now[1],now[2],now[3],27,0,now[6],now[7],now[8]]) + onthehour = mktime([hourfromnow[0],hourfromnow[1],hourfromnow[2],hourfromnow[3], \ + 0,0,hourfromnow[6],hourfromnow[7],hourfromnow[8]]) + + + #print "when it fashionable to wear a onion on your hip" + + if beep_on(onthehour,15): + go_idle = 0 + next_hour=((hourfromnow[3] + 11) % 12) + 1 + if onthehour - time() < next_hour and onthehour - time() > 0: + v.beep(0, False) + msg.append((" DING!", False, None)) + elif int(onthehour - time()) == 0: + v.beep(255, False) + msg.append((" DING!", False, None)) + msg.append((" IT'S "+ str(next_hour) + "O'CLOCK AND ALL IS WELL .....", False, None)) + elif beep_on(halfhour,0): + go_idle = 0 + v.beep(0, False) + msg.append((" HALFHOUR ", False, None)) + elif beep_on(quarterhour,0): + go_idle = 0 + v.beep(0, False) + msg.append((" QTR HOUR ", False, None)) + elif beep_on(threequarterhour,0): + go_idle = 0 + v.beep(0, False) + msg.append((" 3 QTR HOUR ", False, None)) + elif beep_on(fivetothehour,0): + go_idle = 0 + v.beep(0, False) + msg.append(("Quick run to your lectures! Hurry! Hurry!", False, None)) + else: + go_idle = 1 + + ## check for X seconds to the hour + + vstatus.mk.set_messages(msg) + vstatus.mk.update_display() + sleep(1) + ## if no longer case, return to idle + + ## change idler to be clock + if go_idle and vstatus.mk.done(): + vstatus.counter = 1 + vstatus.state = STATE_IDLE + +def handle_door_idle(state, event, params, v, vstatus): + # don't care right now. + pass + +def handle_door_event(state, event, params, v, vstatus): + vstatus.time_to_idle = None + + if params == 1: #door open + vstatus.state = STATE_DOOR_OPENING + logging.warning("Entering open door mode") + v.display("-FEED ME-") + #door_open_mode(v); + vstatus.cur_user = '' + vstatus.cur_pin = '' + elif params == 0: #door closed + vstatus.state = STATE_DOOR_CLOSING + idle_in(vstatus, 5) + + logging.warning('Leaving open door mode') + v.display("-YUM YUM!-") + +def idle_in(vstatus,seconds): + vstatus.time_to_idle = time() + seconds + +def return_to_idle(state,event,params,v,vstatus): + if vstatus.time_to_idle is not None and time() > vstatus.time_to_idle: + vstatus.mk.set_message(GREETING) + vstatus.state = STATE_IDLE + return + if not vstatus.time_to_idle: + vstatus.mk.set_message(GREETING) + vstatus.state = STATE_IDLE + return + +def create_state_table(vstatus): + vstatus.state_table[(STATE_IDLE,TICK,1)] = handle_idle_tick + vstatus.state_table[(STATE_IDLE,KEY,1)] = handle_idle_key + vstatus.state_table[(STATE_IDLE,DOOR,1)] = handle_door_event + + vstatus.state_table[(STATE_DOOR_OPENING,TICK,1)] = handle_door_idle + vstatus.state_table[(STATE_DOOR_OPENING,DOOR,1)] = handle_door_event + vstatus.state_table[(STATE_DOOR_OPENING,KEY,1)] = do_nothing + + vstatus.state_table[(STATE_DOOR_CLOSING,TICK,1)] = return_to_idle + vstatus.state_table[(STATE_DOOR_CLOSING,DOOR,1)] = handle_door_event + vstatus.state_table[(STATE_DOOR_CLOSING,KEY,1)] = do_nothing + + vstatus.state_table[(STATE_GETTING_UID,TICK,1)] = handle_getting_uid_idle + vstatus.state_table[(STATE_GETTING_UID,DOOR,1)] = do_nothing + vstatus.state_table[(STATE_GETTING_UID,KEY,1)] = handle_getting_uid_key + + vstatus.state_table[(STATE_GETTING_PIN,TICK,1)] = handle_getting_pin_idle + vstatus.state_table[(STATE_GETTING_PIN,DOOR,1)] = do_nothing + vstatus.state_table[(STATE_GETTING_PIN,KEY,1)] = handle_getting_pin_key + + vstatus.state_table[(STATE_GET_SELECTION,TICK,1)] = handle_get_selection_idle + vstatus.state_table[(STATE_GET_SELECTION,DOOR,1)] = do_nothing + vstatus.state_table[(STATE_GET_SELECTION,KEY,1)] = handle_get_selection_key + + vstatus.state_table[(STATE_GRANDFATHER_CLOCK,TICK,1)] = handle_idle_grandfather_tick + vstatus.state_table[(STATE_GRANDFATHER_CLOCK,TICK,2)] = handle_grandfather_tick + vstatus.state_table[(STATE_GRANDFATHER_CLOCK,DOOR,1)] = do_nothing + vstatus.state_table[(STATE_GRANDFATHER_CLOCK,DOOR,2)] = do_nothing + vstatus.state_table[(STATE_GRANDFATHER_CLOCK,KEY,1)] = do_nothing + vstatus.state_table[(STATE_GRANDFATHER_CLOCK,KEY,2)] = do_nothing + +def get_state_table_handler(vstatus, state, event, counter): + return vstatus.state_table[(state,event,counter)] + +def run_forever(rfh, wfh, options, cf): v = VendingMachine(rfh, wfh) - print v.ping() + vstatus = VendState(v) + create_state_table(vstatus) + + logging.debug('PING is ' + str(v.ping())) + + if USE_DB: db = DispenseDatabase(v, cf.DBServer, cf.DBName, cf.DBUser, cf.DBPassword) + + vstatus.mk.set_message(GREETING) + setup_idlers(v) + choose_idler() + vstatus.mk.set_message("Booted") + + + # This main loop was hideous and the work of the devil. + # This has now been fixed (mostly) - mtearle + # + # + # notes for later surgery + # (event, counter, ' ') + # V + # d[ ] = (method) + # + # ( return state - not currently implemented ) + + while True: + if USE_DB: + try: + db.handle_events() + except DispenseDatabaseException, e: + logging.error('Database error: '+str(e)) + + + e = v.next_event(0) + (event, params) = e + + vstatus.counter=1 + run_handler(event, params, v, vstatus) + +# logging.debug('Got event: ' + repr(e)) + + +def run_handler(event, params, v, vstatus): + handler = get_state_table_handler(vstatus,vstatus.state,event,vstatus.counter) + if handler: + handler(vstatus.state, event, params, v, vstatus) + +def connect_to_vend(options, cf): + + if options.use_lat: + logging.info('Connecting to vending machine using LAT') + latclient = LATClient(service = cf.ServiceName, password = cf.ServicePassword, server_name = cf.ServerName, connect_password = cf.ConnectPassword, priv_password = cf.PrivPassword) + rfh, wfh = latclient.get_fh() + elif options.use_serial: + # Open vending machine via serial. + logging.info('Connecting to vending machine using serial') + serialclient = SerialClient(port = '/dev/ttyS1', baud = 9600) + rfh,wfh = serialclient.get_fh() + else: + #(rfh, wfh) = popen2('../../virtualvend/vvend.py') + logging.info('Connecting to virtual vending machine on %s:%d'%(options.host,options.port)) + import socket + sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0) + sock.connect((options.host, options.port)) + rfh = sock.makefile('r') + wfh = sock.makefile('w') + + return rfh, wfh + +def parse_args(): + from optparse import OptionParser + + op = OptionParser(usage="%prog [OPTION]...") + op.add_option('-f', '--config-file', default='/etc/dispense/servers.conf', metavar='FILE', dest='config_file', help='use the specified config file instead of /etc/dispense/servers.conf') + op.add_option('--serial', action='store_true', default=True, dest='use_serial', help='use the serial port') + op.add_option('--lat', action='store_true', default=False, dest='use_lat', help='use LAT') + op.add_option('--virtualvend', action='store_false', default=True, dest='use_serial', help='use the virtual vending server instead of LAT') + op.add_option('-n', '--hostname', dest='host', default='localhost', help='the hostname to connect to for virtual vending machine mode (default: localhost)') + op.add_option('-p', '--port', dest='port', default=5150, type='int', help='the port number to connect to (default: 5150)') + op.add_option('-l', '--log-file', metavar='FILE', dest='log_file', default='', help='log output to the specified file') + op.add_option('-s', '--syslog', dest='syslog', metavar='FACILITY', default=None, help='log output to given syslog facility') + op.add_option('-d', '--daemon', dest='daemon', action='store_true', default=False, help='run as a daemon') + op.add_option('-v', '--verbose', dest='verbose', action='store_true', default=False, help='spit out lots of debug output') + op.add_option('-q', '--quiet', dest='quiet', action='store_true', default=False, help='only report errors') + op.add_option('--pid-file', dest='pid_file', metavar='FILE', default='', help='store daemon\'s pid in the given file') + options, args = op.parse_args() + + if len(args) != 0: + op.error('extra command line arguments: ' + ' '.join(args)) + + return options + +config_options = { + 'DBServer': ('Database', 'Server'), + 'DBName': ('Database', 'Name'), + 'DBUser': ('VendingMachine', 'DBUser'), + 'DBPassword': ('VendingMachine', 'DBPassword'), + + 'ServiceName': ('VendingMachine', 'ServiceName'), + 'ServicePassword': ('VendingMachine', 'Password'), + + 'ServerName': ('DecServer', 'Name'), + 'ConnectPassword': ('DecServer', 'ConnectPassword'), + 'PrivPassword': ('DecServer', 'PrivPassword'), + } + +class VendConfigFile: + def __init__(self, config_file, options): + try: + cp = ConfigParser.ConfigParser() + cp.read(config_file) + + for option in options: + section, name = options[option] + value = cp.get(section, name) + self.__dict__[option] = value + + except ConfigParser.Error, e: + raise SystemExit("Error reading config file "+config_file+": " + str(e)) + +def create_pid_file(name): + try: + pid_file = file(name, 'w') + pid_file.write('%d\n'%os.getpid()) + pid_file.close() + except IOError, e: + logging.warning('unable to write to pid file '+name+': '+str(e)) + +def set_stuff_up(): + def do_nothing(signum, stack): + signal.signal(signum, do_nothing) + def stop_server(signum, stack): raise KeyboardInterrupt + signal.signal(signal.SIGHUP, do_nothing) + signal.signal(signal.SIGTERM, stop_server) + signal.signal(signal.SIGINT, stop_server) + + options = parse_args() + config_opts = VendConfigFile(options.config_file, config_options) + if options.daemon: become_daemon() + set_up_logging(options) + if options.pid_file != '': create_pid_file(options.pid_file) + + return options, config_opts + +def clean_up_nicely(options, config_opts): + if options.pid_file != '': + try: + os.unlink(options.pid_file) + logging.debug('Removed pid file '+options.pid_file) + except OSError: pass # if we can't delete it, meh + +def set_up_logging(options): + logger = logging.getLogger() + + if not options.daemon: + stderr_logger = logging.StreamHandler(sys.stderr) + stderr_logger.setFormatter(logging.Formatter('%(levelname)s: %(message)s')) + logger.addHandler(stderr_logger) + + if options.log_file != '': + try: + file_logger = logging.FileHandler(options.log_file) + file_logger.setFormatter(logging.Formatter('%(asctime)s %(levelname)s: %(message)s')) + logger.addHandler(file_logger) + except IOError, e: + logger.warning('unable to write to log file '+options.log_file+': '+str(e)) + + if options.syslog != None: + sys_logger = logging.handlers.SysLogHandler('/dev/log', options.syslog) + sys_logger.setFormatter(logging.Formatter('vendserver[%d]'%(os.getpid()) + ' %(levelname)s: %(message)s')) + logger.addHandler(sys_logger) + + if options.quiet: + logger.setLevel(logging.WARNING) + elif options.verbose: + logger.setLevel(logging.DEBUG) + else: + logger.setLevel(logging.INFO) + +def become_daemon(): + dev_null = file('/dev/null') + fd = dev_null.fileno() + os.dup2(fd, 0) + os.dup2(fd, 1) + os.dup2(fd, 2) + try: + if os.fork() != 0: + sys.exit(0) + os.setsid() + except OSError, e: + raise SystemExit('failed to fork: '+str(e)) + +def do_vend_server(options, config_opts): + while True: + try: + rfh, wfh = connect_to_vend(options, config_opts) + except (SerialClientException, socket.error), e: + (exc_type, exc_value, exc_traceback) = sys.exc_info() + del exc_traceback + logging.error("Connection error: "+str(exc_type)+" "+str(e)) + logging.info("Trying again in 5 seconds.") + sleep(5) + continue + + try: + run_forever(rfh, wfh, options, config_opts) + except VendingException: + logging.error("Connection died, trying again...") + logging.info("Trying again in 5 seconds.") + sleep(5) + +if __name__ == '__main__': + options, config_opts = set_stuff_up() + while True: + try: + logging.warning('Starting Vend Server') + do_vend_server(options, config_opts) + logging.error('Vend Server finished unexpectedly, restarting') + except KeyboardInterrupt: + logging.info("Killed by signal, cleaning up") + clean_up_nicely(options, config_opts) + logging.warning("Vend Server stopped") + break + except SystemExit: + break + except: + (exc_type, exc_value, exc_traceback) = sys.exc_info() + tb = format_tb(exc_traceback, 20) + del exc_traceback + + logging.critical("Uh-oh, unhandled " + str(exc_type) + " exception") + logging.critical("Message: " + str(exc_value)) + logging.critical("Traceback:") + for event in tb: + for line in event.split('\n'): + logging.critical(' '+line) + logging.critical("This message should be considered a bug in the Vend Server.") + logging.critical("Please report this to someone who can fix it.") + sleep(10) + logging.warning("Trying again anyway (might not help, but hey...)") +