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#!/usr/bin/env python3
"""
This script is meant as a simple way to reply to ical invitations from mutt.
See README for instructions and LICENSE for licensing information.
"""
__author__="Martin Sander"
__license__="MIT"
import vobject
import tempfile, time
import os, sys
import warnings
from datetime import datetime
import subprocess
from getopt import gnu_getopt as getopt
from email.message import EmailMessage
usage="""
usage:
%s [OPTIONS] -e your@email.address filename.ics
OPTIONS:
-i interactive
-a accept
-d decline
-t tentatively accept
(accept is default, last one wins)
-D display only
""" % sys.argv[0]
def del_if_present(dic, key):
if key in dic:
del dic[key]
def set_accept_state(attendees, state):
for attendee in attendees:
attendee.params['PARTSTAT'] = [state]
for i in ["RSVP","ROLE","X-NUM-GUESTS","CUTYPE"]:
del_if_present(attendee.params,i)
return attendees
def get_accept_decline():
while True:
sys.stdout.write("\nAccept Invitation? [Y]es/[n]o/[t]entative/[c]ancel\n")
ans = sys.stdin.readline()
if ans.lower() == 'y\n' or ans == '\n':
return 'ACCEPTED'
elif ans.lower() == 'n\n':
return 'DECLINED'
elif ans.lower() =='t\n':
return 'TENTATIVE'
elif ans.lower() =='c\n':
print("aborted")
sys.exit(1)
def get_answer(invitation):
# create
ans = vobject.newFromBehavior('vcalendar')
ans.add('method')
ans.method.value = "REPLY"
ans.add('vevent')
# just copy from invitation
for i in ["uid", "summary", "dtstart", "dtend", "organizer", "vtimezone"]:
if i in invitation.vevent.contents:
ans.vevent.add(invitation.vevent.contents[i][0])
# new timestamp
ans.vevent.add('dtstamp')
ans.vevent.dtstamp.value = datetime.utcnow().replace(
tzinfo = invitation.vevent.dtstamp.value.tzinfo)
return ans
def execute(command, mailtext):
process = subprocess.Popen(command, stdin=subprocess.PIPE)
process.stdin.write(mailtext)
process.stdin.close()
result = None
while result is None:
result = process.poll()
time.sleep(.1)
if result != 0:
print("unable to send reply, subprocess exited with\
exit code %d\nPress return to continue" % result)
sys.stdin.readline()
def openics(invitation_file):
with open(invitation_file) as f:
invitation = vobject.readOne(f, ignoreUnreadable=True)
return invitation
def format_date(value):
if isinstance(value, datetime):
return value.astimezone(tz=None).strftime("%Y-%m-%d %H:%M %z")
else:
return value.strftime("%Y-%m-%d %H:%M %z")
def display(ical):
summary = ical.vevent.contents['summary'][0].value
if 'organizer' in ical.vevent.contents:
if hasattr(ical.vevent.organizer,'EMAIL_param'):
sender = ical.vevent.organizer.EMAIL_param
else:
sender = ical.vevent.organizer.value.split(':')[1] #workaround for MS
else:
sender = "NO SENDER"
if 'description' in ical.vevent.contents:
description = ical.vevent.contents['description'][0].value
else:
description = "NO DESCRIPTION"
if 'attendee' in ical.vevent.contents:
attendees = ical.vevent.contents['attendee']
else:
attendees = ""
if 'location' in ical.vevent.contents:
locations = ical.vevent.contents['location']
else:
locations = None
sys.stdout.write("From:\t" + sender + "\n")
sys.stdout.write("Title:\t" + summary + "\n")
sys.stdout.write("To:\t")
for attendee in attendees:
if hasattr(attendee,'EMAIL_param') and hasattr(attendee,'CN_param'):
sys.stdout.write(attendee.CN_param + " <" + attendee.EMAIL_param + ">, ")
else:
try:
sys.stdout.write(attendee.CN_param + " <" + attendee.value.split(':')[1] + ">, ") #workaround for MS
except:
sys.stdout.write(attendee.value.split(':')[1] + " <" + attendee.value.split(':')[1] + ">, ") #workaround for 'mailto:' in email
sys.stdout.write("\n")
if hasattr(ical.vevent, 'dtstart'):
print("Start:\t%s" % (format_date(ical.vevent.dtstart.value),))
if hasattr(ical.vevent, 'dtend'):
print("End:\t%s" % (format_date(ical.vevent.dtend.value),))
if locations:
sys.stdout.write("Location:\t")
for location in locations:
if location.value:
sys.stdout.write(location.value + ", ")
sys.stdout.write("\n")
sys.stdout.write("\n")
sys.stdout.write(description + "\n")
def sendmail():
mutt_setting = subprocess.check_output(["mutt", "-Q", "sendmail"])
return mutt_setting.strip().decode().split("=")[1].replace('"', '').split()
def organizer(ical):
if 'organizer' in ical.vevent.contents:
if hasattr(ical.vevent.organizer,'EMAIL_param'):
return ical.vevent.organizer.EMAIL_param
else:
return ical.vevent.organizer.value.split(':')[1] #workaround for MS
else:
raise("no organizer in event")
if __name__=="__main__":
email_address = []
accept_decline = 'ACCEPTED'
opts, args=getopt(sys.argv[1:],"e:aidtD")
if len(args) < 1:
sys.stderr.write(usage)
sys.exit(1)
invitation = openics(args[0])
display(invitation)
for opt,arg in opts:
if opt == '-D':
sys.exit(0)
if opt == '-e':
email_address.append(arg)
if opt == '-i':
accept_decline = get_accept_decline()
if opt == '-a':
accept_decline = 'ACCEPTED'
if opt == '-d':
accept_decline = 'DECLINED'
if opt == '-t':
accept_decline = 'TENTATIVE'
ans = get_answer(invitation)
if 'attendee' in invitation.vevent.contents:
attendees = invitation.vevent.contents['attendee']
else:
attendees = ""
set_accept_state(attendees,accept_decline)
ans.vevent.add('attendee')
ans.vevent.attendee_list.pop()
flag = 1
for attendee in attendees:
if hasattr(attendee,'EMAIL_param'):
if attendee.EMAIL_param in email_address:
ans.vevent.attendee_list.append(attendee)
flag = 0
else:
if attendee.value.split(':')[1] in email_address:
ans.vevent.attendee_list.append(attendee)
flag = 0
if flag:
sys.stderr.write("Seems like you have not been invited to this event!\n")
sys.exit(1)
summary = ans.vevent.contents['summary'][0].value
accept_decline = accept_decline.capitalize()
subject = "'%s: %s'" % (accept_decline, summary)
to = organizer(ans)
message = EmailMessage()
message['From'] = email_address[0]
message['To'] = to
message['Subject'] = subject
mailtext = "'%s has %s'" % (email_address[0], accept_decline.lower())
message.add_alternative(mailtext, subtype='plain')
message.add_alternative(ans.serialize(),
subtype='calendar',
params={ 'method': 'REPLY' })
if accept_decline == "Accepted" or accept_decline == "Tentative":
os.system("khal import --batch %s" % (args[0],))
execute(sendmail() + ['--', to], message.as_bytes())
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