X-Git-Url: https://git.ucc.asn.au/?p=zanchey%2Fdispense2.git;a=blobdiff_plain;f=sql-edition%2Fservers%2FVendServer.py;h=a09ac2a96a830f789e345d338ca6b1710333d65a;hp=35d5d3372bb2eb6e31e12c9dc51b8cd0a884311b;hb=0b9646109cf26c70c5928eecdc5b7ab617a011cb;hpb=6c4e6c5f6a4c76449aa0431904584b46fd09c404 diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py index 35d5d33..a09ac2a 100755 --- a/sql-edition/servers/VendServer.py +++ b/sql-edition/servers/VendServer.py @@ -1,11 +1,22 @@ #!/usr/bin/python # vim:ts=4 -import sys, os, string, time, re, pwd -import pg -from LATClient import LATClient -from VendingMachine import VendingMachine -from ConfigParser import ConfigParser +USE_DB = 0 + +import ConfigParser +import sys, os, string, re, pwd, signal +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, LATClientException +from VendingMachine import VendingMachine, VendingException +from HorizScroll import HorizScroll +from random import random, seed +from Idler import TrainIdler,GrayIdler +import socket +from posix import geteuid GREETING = 'UCC SNACKS' PIN_LENGTH = 4 @@ -14,6 +25,8 @@ 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 @@ -21,16 +34,15 @@ 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() @@ -44,6 +56,32 @@ class DispenseDatabase: 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) @@ -77,208 +115,443 @@ def verify_user_pin(uid, pin): else: 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!") - time.sleep(1) + 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 -if __name__ == '__main__': - cp = ConfigParser() - cp.read('/etc/dispense/servers.conf') - DBServer = cp.get('Database', 'Server') - DBName = cp.get('Database', 'Name') - DBUser = cp.get('VendingMachine', 'DBUser') - DBPassword = cp.get('VendingMachine', 'DBPassword') - - ServiceName = cp.get('VendingMachine', 'ServiceName') - ServicePassword = cp.get('VendingMachine', 'Password') - # Open vending machine via LAT - latclient = LATClient(service = ServiceName, password = ServicePassword) - (rfh, wfh) = latclient.get_fh() +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 = 0, wraparound = True) + 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 + +def run_forever(rfh, wfh, options, cf): v = VendingMachine(rfh, wfh) - print 'PING is', v.ping() - #print 'BEEP is', v.beep() - #print 'VEND 11 is', v.vend('11') - #print 'SILENCE is', v.silence() - #print 'DISPLAY is', v.display('WELCOME') - print 'S is', v.get_switches() - - db = DispenseDatabase(v, DBServer, DBName, DBUser, DBPassword) - db.process_requests() + logging.debug('PING is', v.ping()) + + if USE_DB: db = DispenseDatabase(v, cf.DBServer, cf.DBName, cf.DBUser, cf.DBPassword) cur_user = '' cur_pin = '' cur_selection = '' - scrolling_message = [GREETING] - scrolling_wraps = False - need_repaint = True - timeout = None - last_tick = time.time() + mk = MessageKeeper(v) + mk.set_message(GREETING) + time_to_autologout = None + #idler = TrainIdler(v) + #idler = GrayIdler(v) + idler = GrayIdler(v,one="*",zero="-") + time_to_idle = None + last_timeout_refresh = None while True: - if time.time() > last_tick+1: - if timeout != None and timeout > 0: timeout -= 1 - if len(scrolling_message) > 0: - need_repaint = True - last_tick = time.time() - 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 - if timeout == 0: - timeout = None + if USE_DB: + try: + db.handle_events() + except DispenseDatabaseException, e: + logging.error('Database error: '+str(e)) + + 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 time_to_autologout != None and time_to_autologout - time() <= 0: + time_to_autologout = None cur_user = '' cur_pin = '' cur_selection = '' - scrolling_message = [GREETING] - scrolling_wraps = False - need_repaint = True - continue + mk.set_message(GREETING) - while True: - #print 'waiting for event' - e = v.next_event(0) + 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 + time_to_autologout = time() + 15 + + if time_to_idle == None and cur_user == '': time_to_idle = time() + 60 + if time_to_idle != None and cur_user != '': time_to_idle = None + if time_to_idle is not None and time() > time_to_idle: idler.next() + + mk.update_display() + + e = v.next_event(0) + if e == None: + e = v.next_event(0.1) if e == None: - #print 'waiting harder for event' - e = v.next_event(0.1) - if e == None: - #print 'no event. passing' - break - #print 'got event' - (event, params) = e - print e - if event == DOOR: - if params == 0: - door_open_mode(v); + continue + time_to_idle = None + (event, params) = e + logging.debug('Got event: ' + repr(e)) + if event == DOOR: + if params == 0: + door_open_mode(v); + cur_user = '' + cur_pin = '' + mk.set_message(GREETING) + elif event == SWITCH: + # don't care right now. + pass + elif event == KEY: + key = params + # complicated key handling here: + if len(cur_user) < 5: + if key == 11: cur_user = '' - 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: + mk.set_message(GREETING) + continue + cur_user += chr(key + ord('0')) + mk.set_message('UID: '+cur_user) + if len(cur_user) == 5: + uid = int(cur_user) + if not has_good_pin(uid): + #mk.set_messages( + #[(center('INVALID'), False, 0.7), + #(center('PIN'), False, 0.7), + #(center('SETUP'), False, 1.0), + #(GREETING, False, None)]) + mk.set_messages( + [(' '*10+'INVALID PIN SETUP'+' '*10, False, 3), + (GREETING, False, None)]) cur_user = '' - scrolling_message = [GREETING] - scrolling_wraps = False - need_repaint = True - continue - cur_user += chr(key + ord('0')) - scrolling_message = [] - v.display('UID: '+cur_user) - if len(cur_user) == 5: - uid = int(cur_user) - if not has_good_pin(uid): - scrolling_message = map(center, ['INVALID','PIN','SETUP',GREETING]) - scrolling_wraps = False - need_repaint = True - cur_user = '' - cur_pin = '' - continue cur_pin = '' - v.display('PIN: ') - scrolling_message = [] 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: ') - scrolling_message = [] - continue - cur_pin += chr(key + ord('0')) - v.display('PIN: '+'X'*len(cur_pin)) - scrolling_message = [] - if len(cur_pin) == PIN_LENGTH: - username = verify_user_pin(int(cur_user), int(cur_pin)) - if username: - v.beep(0, False) - cur_selection = '' - - scrolling_message = [' WELCOME ', username] - scrolling_message.append('OR A SNACK') - scrolling_wraps = True - need_repaint = True - continue - else: - v.beep(40, False) - scrolling_message = [' BAD PIN ', ' SORRY ', GREETING] - scrolling_wraps = False - need_repaint = True - - cur_user = '' - cur_pin = '' - continue - elif len(cur_selection) == 0: - if key == 11: - cur_pin = '' + cur_pin = '' + mk.set_message('PIN: ') + continue + elif len(cur_pin) < PIN_LENGTH: + if key == 11: + if cur_pin == '': cur_user = '' - cur_selection = '' - v.display('BYE!') - time.sleep(0.5) - scrolling_message = [GREETING] - scrolling_wraps = False - need_repaint = True + mk.set_message(GREETING) continue - cur_selection += chr(key + ord('0')) - scrolling_message = [] - v.display('SELECT: '+cur_selection) - elif len(cur_selection) == 1: - if key == 11: + cur_pin = '' + mk.set_message('PIN: ') + continue + cur_pin += chr(key + ord('0')) + mk.set_message('PIN: '+'X'*len(cur_pin)) + if len(cur_pin) == PIN_LENGTH: + username = verify_user_pin(int(cur_user), int(cur_pin)) + if username: + v.beep(0, False) cur_selection = '' - scrolling_message = [] - v.display('SELECT: ') + scroll_options(username, mk, True) continue else: - cur_selection += chr(key + ord('0')) - #make_selection(cur_selection) - # XXX this should move somewhere else: - if cur_selection == '55': - v.display('GOT DOOR?') - os.system('su - "%s" -c "dispense door"'%username) - elif cur_selection[1] == '8': - v.display('GOT COKE?') - os.system('su - "%s" -c "dispense %s"'%(username, cur_selection[0])) + v.beep(40, False) + mk.set_messages( + [(center('BAD PIN'), False, 1.0), + (center('SORRY'), False, 0.5), + (GREETING, False, None)]) + cur_user = '' + cur_pin = '' + continue + elif len(cur_selection) == 0: + if key == 11: + cur_pin = '' + cur_user = '' + cur_selection = '' + 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: + cur_selection += chr(key + ord('0')) + #make_selection(cur_selection) + # XXX this should move somewhere else: + if cur_selection == '55': + mk.set_message('OPENSESAME') + if geteuid() == 0: + ret = os.system('su - "%s" -c "dispense door"'%username) + else: + ret = os.system('dispense door') + if ret == 0: + mk.set_message(center('DOOR OPEN')) else: - v.display('HERES A '+cur_selection) - v.vend(cur_selection) - time.sleep(0.5) - v.display('THANK YOU') - time.sleep(0.5) + mk.set_message(center('BAD DOOR')) + sleep(1) + elif cur_selection == '91': + cookie(v) + elif cur_selection == '99': + scroll_options(username, mk) cur_selection = '' - scrolling_message = [ - 'LOGOUT: 5', - 'LOGOUT: 4', - 'LOGOUT: 3', - 'LOGOUT: 2', - 'LOGOUT: 1', - 'BYE BYE!'] - timeout = 7 - scrolling_wraps = True - need_repaint = True - - db.handle_events() + continue + elif cur_selection[1] == '8': + v.display('GOT COKE?') + os.system('su - "%s" -c "dispense %s"'%(username, cur_selection[0])) + else: + v.display('HERES A '+cur_selection) + v.vend(cur_selection) + sleep(0.5) + v.display('THANK YOU') + sleep(0.5) + cur_selection = '' + time_to_autologout = time() + 8 + +def connect_to_vend(options, cf): + # Open vending machine via LAT? + if options.use_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() + else: + #(rfh, wfh) = popen2('../../virtualvend/vvend.py') + 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('--virtualvend', action='store_false', default=True, dest='use_lat', 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', action='store_true', default=False, help='log output to syslog') + 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: + logging.critical("Error reading config file "+config_file+": " + str(e)) + logging.critical("Bailing out") + sys.exit(1) + +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() + set_up_logging(options) + config_opts = VendConfigFile(options.config_file, config_options) + if options.daemon: become_daemon() + 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() + + 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: + sys_logger = logging.handlers.SysLogHandler('/dev/log', 'daemon') + 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) + if os.fork() != 0: + sys.exit(0) + +def do_vend_server(options, config_opts): + while True: + try: + rfh, wfh = connect_to_vend(options, config_opts) + except (LATClientException, 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.info('Starting Vend Server') + do_vend_server(options, config_opts) + logging.warning('Vend Server finished unexpectedly, restarting') + except KeyboardInterrupt: + logging.info("Killed by signal, cleaning up") + clean_up_nicely(options, config_opts) + logging.info("Vend Server stopped") + 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...)") +