Add SIGUSR1 traceback (made by jimbo, committed by TPG)
[uccvend-vendserver.git] / VendServer / VendServer.py
index 21fe2c8..cf9c8bb 100755 (executable)
@@ -1,14 +1,12 @@
 #!/usr/bin/python
-# vim:ts=4
+# vim: ts=4 sts=4 sw=4 noexpandtab
 
-USE_DB = 0
 USE_MIFARE = 1
 
 import ConfigParser
 import sys, os, string, re, pwd, signal, math, syslog
 import logging, logging.handlers
 from traceback import format_tb
-if USE_DB: import pg
 from time import time, sleep, mktime, localtime
 from subprocess import Popen, PIPE
 from LATClient import LATClient, LATClientException
@@ -21,8 +19,8 @@ from Idler import GreetingIdler,TrainIdler,GrayIdler,StringIdler,ClockIdler,Fort
 from SnackConfig import get_snack#, get_snacks
 import socket
 from posix import geteuid
-from LDAPConnector import get_uid,get_uname, set_card_id
 from OpenDispense import OpenDispense as Dispense
+import TracebackPrinter
 
 CREDITS="""
 This vending machine software brought to you by:
@@ -95,36 +93,6 @@ class VendConfigFile:
                except ConfigParser.Error, e:
                        raise SystemExit("Error reading config file "+config_file+": " + str(e))
 
-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()
 """
 This class manages the current state of the vending machine.
 """
@@ -173,7 +141,6 @@ class VendServer():
                # If the user has just logged in, show them their balance
                if welcome:
                        balance = self.dispense.getBalance()
-                       
                        msg = [(self.center('WELCOME'), False, TEXT_SPEED),
                                   (self.center(self.dispense.getUsername()), False, TEXT_SPEED),
                                   (self.center(balance), False, TEXT_SPEED),]
@@ -368,12 +335,14 @@ class VendServer():
                                self.vstatus.last_timeout_refresh = int(time_left)
                                self.vstatus.cur_selection = ''
 
+               # Login timed out: Log out the current user.
                if self.vstatus.time_to_autologout != None and self.vstatus.time_to_autologout - time() <= 0:
                        self.vstatus.time_to_autologout = None
                        self.vstatus.cur_user = ''
                        self.vstatus.cur_pin = ''
                        self.vstatus.cur_selection = ''
                        self._last_card_id = -1
+                       self.dispense.logOut()
                        self.reset_idler()
 
                ### State fully logged out ... reset variables
@@ -402,7 +371,8 @@ class VendServer():
                                self.vstatus.cur_pin = ''
                                self.vstatus.cur_user = ''
                                self.vstatus.cur_selection = ''
-                               _last_card_id = -1
+                               self._last_card_id = -1
+                               self.dispense.logOut()
                                self.vstatus.mk.set_messages([(self.center('BYE!'), False, 1.5)])
                                self.reset_idler(2)
                                return
@@ -413,18 +383,22 @@ class VendServer():
                        if key == 11:
                                self.vstatus.cur_selection = ''
                                self.vstatus.time_to_autologout = None
+                               self.dispense.logOut()
                                self.scroll_options(self.vstatus.username, self.vstatus.mk)
                                return
                        else:
                                self.vstatus.cur_selection += chr(key + ord('0'))
-                               if self.vstatus.cur_user:
+                               if self.dispense.isLoggedIn():
                                        self.make_selection()
                                        self.vstatus.cur_selection = ''
                                        self.vstatus.time_to_autologout = time() + 8
                                        self.vstatus.last_timeout_refresh = None
                                else:
                                        # Price check mode.
-                                       self.dispense.getItemInfo(self.vstatus.cur_selection)
+                                       (name,price) = self.dispense.getItemInfo(self.vstatus.cur_selection)
+                                       dollarprice = "$%.2f" % ( price / 100.0 )
+                                       self.v.display( self.vstatus.cur_selection+' - %s'%dollarprice)
+
                                        self.vstatus.cur_selection = ''
                                        self.vstatus.time_to_autologout = None
                                        self.vstatus.last_timeout_refresh = None
@@ -433,6 +407,7 @@ class VendServer():
        Triggered when the user has entered the id of something they would like to purchase.
        """
        def make_selection(self):
+               logging.debug('Dispense item "%s"' % (self.vstatus.cur_selection,))
                # should use sudo here
                if self.vstatus.cur_selection == '55':
                        self.vstatus.mk.set_message('OPENSESAME')
@@ -471,12 +446,13 @@ class VendServer():
                        exitcode = os.system('dispense -u "%s" snack:%s'%(self.vstatus.username, self.vstatus.cur_selection)) >> 8
                        if (exitcode == 0):
                                # magic dispense syslog service
-                               syslog.syslog(syslog.LOG_INFO | syslog.LOG_LOCAL4, "vended %s (slot %s) for %s" % (name, self.vstatus.cur_selection, self.vstatus.username))
                                (worked, code, string) = self.v.vend(self.vstatus.cur_selection)
                                if worked:
                                        self.v.display('THANK YOU')
+                                       syslog.syslog(syslog.LOG_INFO | syslog.LOG_LOCAL4, "vended %s (slot %s) for %s" % (name, self.vstatus.cur_selection, self.vstatus.username))
                                else:
                                        print "Vend Failed:", code, string
+                                       syslog.syslog(syslog.LOG_WARNING | syslog.LOG_LOCAL4, "vending %s (slot %s) for %s FAILED %r %r" % (name, self.vstatus.cur_selection, self.vstatus.username, code, string))
                                        self.v.display('VEND FAIL')
                        elif (exitcode == 5):   # RV_BALANCE
                                self.v.display('NO MONEY?')
@@ -498,7 +474,8 @@ class VendServer():
                        if key == 11:
                                if self.vstatus.cur_pin == '':
                                        self.vstatus.cur_user = ''
-                                       slef.reset_idler()
+                                       self.dispense.logOut()
+                                       self.reset_idler()
 
                                        return
                                self.vstatus.cur_pin = ''
@@ -507,8 +484,8 @@ class VendServer():
                        self.vstatus.cur_pin += chr(key + ord('0'))
                        self.vstatus.mk.set_message('PIN: '+'X'*len(self.vstatus.cur_pin))
                        if len(self.vstatus.cur_pin) == PIN_LENGTH:
-                               self.dispense.authUserIdPin(self.vstatus.cur_user, self.vstatus.cur_pin)
-                               if self.dispense.getUsername():
+                               if self.dispense.authUserIdPin(self.vstatus.cur_user, self.vstatus.cur_pin):
+                                       self.vstatus.username = self.dispense.getUsername()
                                        self.v.beep(0, False)
                                        self.vstatus.cur_selection = ''
                                        self.vstatus.change_state(STATE_GET_SELECTION)
@@ -545,6 +522,7 @@ class VendServer():
                if len(self.vstatus.cur_user) <8:
                        if key == 11:
                                self.vstatus.cur_user = ''
+                               self.dispense.logOut()
 
                                self.reset_idler()
                                return
@@ -624,6 +602,7 @@ class VendServer():
                key = params
                if key == 11:
                        self.vstatus.cur_user = ''
+                       self.dispense.logOut()
                        self.reset_idler()
                        return
                
@@ -788,6 +767,7 @@ class VendServer():
                        logging.warning("Entering open door mode")
                        self.v.display("-FEED  ME-")
                        #door_open_mode(v);
+                       self.dispense.logOut()
                        self.vstatus.cur_user = ''
                        self.vstatus.cur_pin = ''
                elif params == 1:  #door closed
@@ -808,9 +788,7 @@ class VendServer():
 
                self._last_card_id = card_id
                
-               self.dispense.authMifareCard(card_id)
-               logging.info('Mapped card id to uid %s'%self.dispense.getUsername())
-               if not self.dispense.isLoggedIn():
+               if not self.dispense.authMifareCard(card_id):
                        self.v.beep(40, False)
                        self.vstatus.mk.set_messages(
                                [(self.center('BAD CARD'), False, 1.0),
@@ -822,6 +800,7 @@ class VendServer():
                        self.reset_idler(2)
                        return
                elif self.dispense.isDisabled():
+                       logging.info('Mapped card id to uid %s'%self.dispense.getUsername())
                        self.v.beep(40, False)
                        self.vstatus.mk.set_messages(
                                [(self.center('ACCT DISABLED'), False, 1.0),
@@ -830,6 +809,9 @@ class VendServer():
                        self.reset_idler(2)
                        return
                else:
+                       logging.info('Mapped card id to uid %s'%self.dispense.getUsername())
+                       self.vstatus.cur_user = '----'
+                       self.vstatus.username = self.dispense.getUsername()
                        self.vstatus.cur_selection = ''
                        self.vstatus.change_state(STATE_GET_SELECTION)
                        self.scroll_options(self.vstatus.username, self.vstatus.mk, True)
@@ -847,15 +829,11 @@ class VendServer():
 
                self._last_card_id = card_id
 
-               res = self.dispense.addCard(card_id)
-
-               if get_uid(card_id) != None:
+               if not self.dispense.addCard(card_id):
                        self.vstatus.mk.set_messages(
                                [(self.center('ALREADY'), False, 0.5),
                                 (self.center('ENROLLED'), False, 0.5)])
                else:
-                       logging.info('Enrolling card %s to uid %s (%s)'%(card_id, self.vstatus.cur_user, self.vstatus.username))
-                       self.set_card_id(self.vstatus.cur_user, self.card_id)
                        self.vstatus.mk.set_messages(
                                [(self.center('CARD'), False, 0.5),
                                 (self.center('ENROLLED'), False, 0.5)])
@@ -927,18 +905,10 @@ class VendServer():
 
                logging.debug('PING is ' + str(self.v.ping()))
 
-               if USE_DB: db = DispenseDatabase(v, cf.DBServer, cf.DBName, cf.DBUser, cf.DBPassword)
-
                self.setup_idlers()
                self.reset_idler()
 
                while True:
-                       if USE_DB:
-                               try:
-                                       db.handle_events()
-                               except DispenseDatabaseException, e:
-                                       logging.error('Database error: '+str(e))
-
                        timeout = self.time_to_next_update()
                        (event, params) = self.v.next_event(timeout)
                        self.run_handler(event, params)
@@ -994,6 +964,7 @@ def parse_args():
        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')
+        op.add_option('--traceback-file', dest='traceback_file', default='', help='destination to print tracebacks when receiving SIGUSR1')
        options, args = op.parse_args()
 
        if len(args) != 0:
@@ -1022,7 +993,7 @@ def set_stuff_up():
        if options.daemon: become_daemon()
        set_up_logging(options)
        if options.pid_file != '': create_pid_file(options.pid_file)
-
+       if options.traceback_file != '': TracebackPrinter.traceback_init(options.traceback_file)
        return options, config_opts
 
 def clean_up_nicely(options, config_opts):
@@ -1086,7 +1057,7 @@ def do_vend_server(options, config_opts):
                        continue
                
 #              run_forever(rfh, wfh, options, config_opts)
-               
+
                try:
                        vserver = VendServer()
                        vserver.run_forever(rfh, wfh, options, config_opts)

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