Differential D219 Diff 496 pykolab/itip/__init__.py

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pykolab/itip/init.py

import icalendar		import icalendar
import pykolab		import pykolab
import traceback		import traceback
import kolabformat		import kolabformat
		import re

from pykolab.xml import to_dt		from pykolab.xml import to_dt
from pykolab.xml import event_from_ical		from pykolab.xml import event_from_ical
from pykolab.xml import todo_from_ical		from pykolab.xml import todo_from_ical
from pykolab.xml import participant_status_label		from pykolab.xml import participant_status_label
from pykolab.translate import _		from pykolab.translate import _
		from tzlocal import windows_tz

log = pykolab.getLogger('pykolab.wallace')		log = pykolab.getLogger('pykolab.wallace')


def events_from_message(message, methods=None):		def events_from_message(message, methods=None):
return objects_from_message(message, ["VEVENT"], methods)		return objects_from_message(message, ["VEVENT"], methods)

def todos_from_message(message, methods=None):		def todos_from_message(message, methods=None):
return objects_from_message(message, ["VTODO"], methods)		return objects_from_message(message, ["VTODO"], methods)


def objects_from_message(message, objnames, methods=None):		def objects_from_message(message, objnames, methods=None):
"""		"""
Obtain the iTip payload from email.message <message>		Obtain the iTip payload from email.message <message>
"""		"""
# Placeholder for any itip_objects found in the message.		# Placeholder for any itip_objects found in the message.
itip_objects = []		itip_objects = []
seen_uids = []		seen_uids = []

Show All 16 Lines	for part in message.walk():
log.info(_("Method %r not really interesting for us.") % (part.get_param('method')))		log.info(_("Method %r not really interesting for us.") % (part.get_param('method')))
continue		continue

# Get the itip_payload		# Get the itip_payload
itip_payload = part.get_payload(decode=True)		itip_payload = part.get_payload(decode=True)

log.debug(_("Raw iTip payload (%r): %r") % (part.get_param('charset'), itip_payload), level=9)		log.debug(_("Raw iTip payload (%r): %r") % (part.get_param('charset'), itip_payload), level=9)

		# Convert unsupported timezones, etc.
		itip_payload = _convert_itip_payload(itip_payload)

# Python iCalendar prior to 3.0 uses "from_string".		# Python iCalendar prior to 3.0 uses "from_string".
if hasattr(icalendar.Calendar, 'from_ical'):		if hasattr(icalendar.Calendar, 'from_ical'):
cal = icalendar.Calendar.from_ical(itip_payload)		cal = icalendar.Calendar.from_ical(itip_payload)
elif hasattr(icalendar.Calendar, 'from_string'):		elif hasattr(icalendar.Calendar, 'from_string'):
cal = icalendar.Calendar.from_string(itip_payload)		cal = icalendar.Calendar.from_string(itip_payload)

# If we can't read it, we're out		# If we can't read it, we're out
else:		else:
▲ Show 20 Lines • Show All 74 Lines • ▼ Show 20 Lines	def objects_from_message(message, objnames, methods=None):

# end for part in message.walk()		# end for part in message.walk()

if not len(itip_objects) and not message.is_multipart():		if not len(itip_objects) and not message.is_multipart():
log.debug(_("Message is not an iTip message (non-multipart message)"), level=5)		log.debug(_("Message is not an iTip message (non-multipart message)"), level=5)

return itip_objects		return itip_objects


def check_event_conflict(kolab_event, itip_event):		def check_event_conflict(kolab_event, itip_event):
"""		"""
Determine whether the given kolab event conflicts with the given itip event		Determine whether the given kolab event conflicts with the given itip event
"""		"""
conflict = False		conflict = False

# don't consider conflict with myself		# don't consider conflict with myself
if kolab_event.uid == itip_event['uid']:		if kolab_event.uid == itip_event['uid']:
▲ Show 20 Lines • Show All 52 Lines • ▼ Show 20 Lines	while not conflict and _es is not None:
elif _es is None and not kolab_event.is_recurring() and len(kolab_event.get_exceptions()) > _ei:		elif _es is None and not kolab_event.is_recurring() and len(kolab_event.get_exceptions()) > _ei:
_ev = kolab_event.get_exceptions()[_ei]		_ev = kolab_event.get_exceptions()[_ei]
_es = to_dt(_ev.get_start())		_es = to_dt(_ev.get_start())
_ee = to_dt(_ev.get_end())		_ee = to_dt(_ev.get_end())
_ei += 1		_ei += 1

return conflict		return conflict


def _is_transparent(event):		def _is_transparent(event):
return event.get_transparency() or event.get_status() == kolabformat.StatusCancelled		return event.get_transparency() or event.get_status() == kolabformat.StatusCancelled

		def _convert_itip_payload(itip):
		matchlist = re.findall("^((DTSTART\|DTEND\|DUE\|EXDATE\|COMPLETED)[:;][^\n]+)$", itip, re.MULTILINE)

		for match in matchlist:
		match = match[0]
		search = re.search(";TZID=([^:;]+)", match)

		if search:
		tzorig = tzdest = search.group(1).replace('"', '')

		# timezone in Olson-database format, nothing to convert
		if re.match("[a-zA-Z]+/[a-zA-Z0-9_+-]+", tzorig):
		continue

		# convert timezone from windows format to Olson
		if tzorig in windows_tz.win_tz:
		tzdest = windows_tz.win_tz[tzorig]

		# @TODO: Should be prefer server time if it has the same offset?

		# replace old with new timezone name
		if tzorig != tzdest:
		replace = match.replace(search.group(0), ";TZID=" + tzdest)
		itip = itip.replace("\n" + match, "\n" + replace)

		return itip

def check_date_conflict(_es, _ee, _is, _ie):		def check_date_conflict(_es, _ee, _is, _ie):
"""		"""
Check the given event start/end dates for conflicts		Check the given event start/end dates for conflicts
"""		"""
conflict = False		conflict = False

# TODO: add margin for all-day dates (+13h; -12h)		# TODO: add margin for all-day dates (+13h; -12h)

if _es < _is:		if _es < _is:
if _es <= _ie:		if _es <= _ie:
if _ee <= _is:		if _ee <= _is:
conflict = False		conflict = False
else:		else:
conflict = True		conflict = True
else:		else:
conflict = True		conflict = True
elif _es == _is:		elif _es == _is:
conflict = True		conflict = True
else: # _es > _is		else: # _es > _is
if _es < _ie:		if _es < _ie:
conflict = True		conflict = True
else:		else:
conflict = False		conflict = False

return conflict		return conflict


def send_reply(from_address, itip_events, response_text, subject=None):		def send_reply(from_address, itip_events, response_text, subject=None):
"""		"""
Send the given iCal events as a valid iTip REPLY to the organizer.		Send the given iCal events as a valid iTip REPLY to the organizer.
"""		"""
import smtplib		import smtplib
▲ Show 20 Lines • Show All 86 Lines • Show Last 20 Lines