Package flumotion :: Package component :: Package bouncers :: Module icalbouncer
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Source Code for Module flumotion.component.bouncers.icalbouncer

 1  # -*- Mode: Python -*- 
 2  # vi:si:et:sw=4:sts=4:ts=4 
 3  # 
 4  # Flumotion - a streaming media server 
 5  # Copyright (C) 2004,2005,2006,2007 Fluendo, S.L. (www.fluendo.com). 
 6  # All rights reserved. 
 7   
 8  # This file may be distributed and/or modified under the terms of 
 9  # the GNU General Public License version 2 as published by 
10  # the Free Software Foundation. 
11  # This file is distributed without any warranty; without even the implied 
12  # warranty of merchantability or fitness for a particular purpose. 
13  # See "LICENSE.GPL" in the source distribution for more information. 
14   
15  # Licensees having purchased or holding a valid Flumotion Advanced 
16  # Streaming Server license may use this file in accordance with the 
17  # Flumotion Advanced Streaming Server Commercial License Agreement. 
18  # See "LICENSE.Flumotion" in the source distribution for more information. 
19   
20  # Headers in this file shall remain intact. 
21   
22  """ 
23  A bouncer that only lets in during an event scheduled with an ical file. 
24  """ 
25   
26  from twisted.internet import defer 
27   
28  from flumotion.common import keycards, config 
29  from flumotion.component.bouncers import bouncer 
30  from flumotion.common.keycards import KeycardGeneric 
31  from datetime import datetime 
32  from flumotion.component.base import scheduler 
33   
34  __all__ = ['IcalBouncer'] 
35   
36  try: 
37      # icalendar and dateutil modules needed for ical parsing 
38      from icalendar import Calendar 
39      from dateutil import rrule 
40      HAS_ICAL = True 
41  except: 
42      HAS_ICAL = False 
43   
44 -class IcalBouncer(bouncer.Bouncer):
45 46 logCategory = 'icalbouncer' 47 keycardClasses = (KeycardGeneric) 48 events = [] 49
50 - def do_setup(self):
51 if not HAS_ICAL: 52 return defer.fail( 53 config.ConfigError( 54 "Please install icalendar and dateutil modules")) 55 props = self.config['properties'] 56 self._icsfile = props['file'] 57 self.icalScheduler = scheduler.ICalScheduler(open( 58 self._icsfile, 'r')) 59 60 return True
61
62 - def do_authenticate(self, keycard):
63 self.debug('authenticating keycard') 64 65 # need to check if inside an event time 66 # FIXME: think of a strategy for handling overlapping events 67 currentEvents = self.icalScheduler.getCurrentEvents() 68 if currentEvents: 69 event = currentEvents[0] 70 keycard.state = keycards.AUTHENTICATED 71 duration = event.end - datetime.now() 72 durationSecs = duration.days * 86400 + duration.seconds 73 keycard.duration = durationSecs 74 self.addKeycard(keycard) 75 self.info("autheticated login") 76 return keycard 77 self.info("failed in authentication, outside hours") 78 return None
79