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1 # -*- Mode: Python; test-case-name: flumotion.test.test_icalbouncer -*- 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 datetime import datetime 27 28 from twisted.internet import defer 29 30 from flumotion.common import keycards, messages, errors 31 from flumotion.common import log, documentation 32 from flumotion.common import eventcalendar 33 from flumotion.common.i18n import N_, gettexter 34 from flumotion.component.base import scheduler 35 from flumotion.component.bouncers import bouncer 36 from flumotion.common.keycards import KeycardGeneric 37 38 __all__ = ['IcalBouncer'] 39 __version__ = "$Rev: 8156 $" 40 T_ = gettexter() 41 4244 45 logCategory = 'icalbouncer' 46 keycardClasses = (KeycardGeneric, ) 47 events = [] 48 516653 54 def missingModule(moduleName): 55 m = messages.Error(T_(N_( 56 "To use the iCalendar bouncer you need to have " 57 "the '%s' module installed.\n"), moduleName), 58 mid='error-python-%s' % moduleName) 59 documentation.messageAddPythonInstall(m, moduleName) 60 addMessage(m)61 62 if not eventcalendar.HAS_ICALENDAR: 63 missingModule('icalendar') 64 if not eventcalendar.HAS_DATEUTIL: 65 missingModule('dateutil')68 props = self.config['properties'] 69 self._icsfile = props['file'] 70 71 try: 72 handle = open(self._icsfile, 'r') 73 except IOError, e: 74 m = messages.Error(T_(N_( 75 "Failed to open iCalendar file '%s'. " 76 "Check permissions on that file."), self._icsfile), 77 mid='error-icalbouncer-file') 78 self.addMessage(m) 79 return defer.fail(errors.ComponentSetupHandledError()) 80 81 try: 82 self.iCalScheduler = scheduler.ICalScheduler(handle) 83 except (ValueError, IndexError, KeyError), e: 84 m = messages.Error(T_(N_( 85 "Error parsing ical file '%s'."), self._icsfile), 86 debug=log.getExceptionMessage(e), 87 mid="error-icalbouncer-file") 88 self.addMessage(m) 89 return defer.fail(errors.ComponentSetupHandledError()) 90 91 return True9294 self.debug('authenticating keycard') 95 96 # need to check if inside an event time 97 # FIXME: think of a strategy for handling overlapping events 98 cal = self.iCalScheduler.getCalendar() 99 eventInstances = cal.getActiveEventInstances() 100 if eventInstances: 101 instance = eventInstances[0] 102 now = datetime.now(eventcalendar.UTC) 103 end = instance.end 104 duration = end - now 105 durationSecs = duration.days * 86400 + duration.seconds 106 keycard.duration = durationSecs 107 if self.addKeycard(keycard): 108 keycard.state = keycards.AUTHENTICATED 109 self.info("authenticated login, duration %d seconds", 110 durationSecs) 111 return keycard 112 keycard.state = keycards.REFUSED 113 self.info("failed in authentication, outside hours") 114 return None115117 # we might not have an iCalScheduler, if something went wrong 118 # during do_setup or do_check 119 if self.iCalScheduler: 120 self.iCalScheduler.cleanup()121
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