X-Git-Url: https://git.ucc.asn.au/?p=zanchey%2Fdispense2.git;a=blobdiff_plain;f=sql-edition%2Fservers%2FVendServer.py;h=40223f1fef7d756f96fb93679381fcb34216b15d;hp=b173d3cce6ce5e740ee6ba1c951f1db71fd437af;hb=7ec2b344515a34fdc38591e4c3f139cdd7103dc5;hpb=9efe6832b7bef10834412826ed1c287d7091166b diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py index b173d3c..40223f1 100755 --- a/sql-edition/servers/VendServer.py +++ b/sql-edition/servers/VendServer.py @@ -3,14 +3,38 @@ USE_DB = 0 -import sys, os, string, re, pwd +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 from popen2 import popen2 -from LATClient import LATClient -from VendingMachine import VendingMachine -from ConfigParser import ConfigParser +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 @@ -19,6 +43,8 @@ DOOR = 1 SWITCH = 2 KEY = 3 +class DispenseDatabaseException(Exception): pass + class DispenseDatabase: def __init__(self, vending_machine, host, name, user, password): self.vending_machine = vending_machine @@ -26,16 +52,15 @@ class DispenseDatabase: self.db.query('LISTEN vend_requests') def process_requests(self): - print 'processing' + 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: - sys.stderr.write('Failed to query database: %s\n'%(db_err.strip())) - return + raise DispenseDatabaseException('Failed to query database: %s\n'%(db_err.strip())) for (id, slot) in outstanding: (worked, code, string) = self.vending_machine.vend(slot) - print (worked, code, string) + logging.debug (str((worked, code, string))) if worked: query = 'SELECT vend_success(%s)'%id self.db.query(query).getresult() @@ -56,8 +81,13 @@ def scroll_options(username, mk, welcome = False): else: msg = [] choices = ' '*10+'CHOICES: ' - coke_machine = file('/home/other/coke/coke_contents') - cokes = coke_machine.readlines() + 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) @@ -65,7 +95,8 @@ def scroll_options(username, mk, welcome = False): choices += '%s8-%s (%sc) '%(slot_num, slot_name, price) choices += '55-DOOR ' choices += 'OR A SNACK. ' - choices += '99 TO READ AGAIN.' + choices += '99 TO READ AGAIN. ' + choices += 'CHOICE? ' msg.append((choices, False, None)) mk.set_messages(msg) @@ -73,22 +104,27 @@ 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) @@ -98,136 +134,174 @@ def has_good_pin(uid): 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 door_open_mode(vending_machine): - print "Entering open door mode" - v.display("DOOR OPEN") +def door_open_mode(v): + logging.warning("Entering open door mode") + v.display("-FEED ME-") 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!") + logging.warning('Leaving open door mode') + v.display("-YUM YUM!-") sleep(1) return +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 = '' + 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 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 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 = 10) - 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 - 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') +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), + FileIdler(v, '/etc/passwd'), + 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 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() + +def run_forever(rfh, wfh, options, cf): v = VendingMachine(rfh, wfh) - print 'PING is', v.ping() + logging.debug('PING is ' + str(v.ping())) - if USE_DB: db = DispenseDatabase(v, DBServer, DBName, DBUser, DBPassword) + if USE_DB: db = DispenseDatabase(v, cf.DBServer, cf.DBName, cf.DBUser, cf.DBPassword) cur_user = '' cur_pin = '' cur_selection = '' mk = MessageKeeper(v) mk.set_message(GREETING) - logout_timeout = None + time_to_autologout = None + setup_idlers(v) + time_to_idle = None last_timeout_refresh = None while True: - if USE_DB: db.handle_events() + if USE_DB: + try: + db.handle_events() + except DispenseDatabaseException, e: + logging.error('Database error: '+str(e)) - if logout_timeout != None: - time_left = logout_timeout - time() - if time_left < 10 and (last_timeout_refresh is None or last_timeout_refresh > time_left): + if time_to_autologout != None: + time_left = time_to_autologout - time() + if time_left < 6 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 + if time_to_autologout != None and time_to_autologout - time() <= 0: + time_to_autologout = 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: + if time_to_autologout and not mk.done(): time_to_autologout = None + if cur_user == '' and time_to_autologout: time_to_autologout = None + if len(cur_pin) == PIN_LENGTH and mk.done() and time_to_autologout == None: # start autologout - logout_timeout = time() + 10 + time_to_autologout = time() + 15 + last_timeout_refresh = None + + if time_to_idle == None and cur_user == '': + time_to_idle = time() + 5 + choose_idler() + if time_to_idle is not None and cur_user != '': time_to_idle = None + if time_to_idle is not None and time() > time_to_idle: idle_step() + if time_to_idle is not None and time() > time_to_idle + 300: + time_to_idle = time() + choose_idler() mk.update_display() e = v.next_event(0) if e == None: - e = v.next_event(0.1) + e = v.next_event(0.05) if e == None: continue + time_to_idle = None (event, params) = e - print e + logging.debug('Got event: ' + repr(e)) if event == DOOR: if params == 0: door_open_mode(v); @@ -250,16 +324,21 @@ if __name__ == '__main__': if len(cur_user) == 5: uid = int(cur_user) if not has_good_pin(uid): + logging.info('user '+cur_user+' has a bad PIN') + #mk.set_messages( + #[(center('INVALID'), False, 0.7), + #(center('PIN'), False, 0.7), + #(center('SETUP'), False, 1.0), + #(GREETING, False, None)]) mk.set_messages( - [(center('INVALID'), False, 0.7), - (center('PIN'), False, 0.7), - (center('SETUP'), False, 1.0), + [(' '*10+'INVALID PIN SETUP'+' '*10, False, 3), (GREETING, False, None)]) cur_user = '' cur_pin = '' continue cur_pin = '' mk.set_message('PIN: ') + logging.info('need pin for user %s'%cur_user) continue elif len(cur_pin) < PIN_LENGTH: if key == 11: @@ -293,15 +372,17 @@ if __name__ == '__main__': cur_pin = '' cur_user = '' cur_selection = '' - v.display('BYE!') - sleep(0.5) - mk.set_message(GREETING) + mk.set_messages( + [(center('BYE!'), False, 1.5), + (GREETING, False, None)]) continue cur_selection += chr(key + ord('0')) mk.set_message('SELECT: '+cur_selection) + time_to_autologout = None elif len(cur_selection) == 1: if key == 11: cur_selection = '' + time_to_autologout = None scroll_options(username, mk) continue else: @@ -309,20 +390,234 @@ if __name__ == '__main__': #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) + mk.set_message('OPENSESAME') + logging.info('dispensing a door for %s'%username) + if geteuid() == 0: + ret = os.system('su - "%s" -c "dispense door"'%username) + else: + ret = os.system('dispense door') + if ret == 0: + logging.info('door opened') + mk.set_message(center('DOOR OPEN')) + else: + logging.warning('user %s tried to dispense a bad door'%username) + mk.set_message(center('BAD DOOR')) + sleep(1) + elif cur_selection == '91': + cookie(v) 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])) + if ((os.system('su - "%s" -c "dispense %s"'%(username, cur_selection[0])) >> 8) != 0): + v.display('SEEMS NOT') + else: + v.display('GOT COKE!') else: - v.display('HERES A '+cur_selection) - v.vend(cur_selection) - sleep(0.5) - v.display('THANK YOU') - sleep(0.5) + v.display(cur_selection+' - $1.00') + if ((os.system('su - "%s" -c "dispense snack"'%(username)) >> 8) == 0): + v.vend(cur_selection) + v.display('THANK YOU') + else: + v.display('NO MONEY?') + sleep(1) cur_selection = '' - logout_timeout = time() + 10 + time_to_autologout = time() + 8 + last_timeout_refresh = None + +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...)") +