paul@0 | 1 | #!/usr/bin/env python |
paul@0 | 2 | |
paul@0 | 3 | from email import message_from_file |
paul@0 | 4 | from vCalendar import parse |
paul@2 | 5 | import imip_store |
paul@0 | 6 | import sys |
paul@0 | 7 | |
paul@0 | 8 | try: |
paul@0 | 9 | from cStringIO import StringIO |
paul@0 | 10 | except ImportError: |
paul@0 | 11 | from StringIO import StringIO |
paul@0 | 12 | |
paul@0 | 13 | # Postfix exit codes. |
paul@0 | 14 | |
paul@0 | 15 | EX_USAGE = 64 |
paul@0 | 16 | EX_DATAERR = 65 |
paul@0 | 17 | EX_NOINPUT = 66 |
paul@0 | 18 | EX_NOUSER = 67 |
paul@0 | 19 | EX_NOHOST = 68 |
paul@0 | 20 | EX_UNAVAILABLE = 69 |
paul@0 | 21 | EX_SOFTWARE = 70 |
paul@0 | 22 | EX_OSERR = 71 |
paul@0 | 23 | EX_OSFILE = 72 |
paul@0 | 24 | EX_CANTCREAT = 73 |
paul@0 | 25 | EX_IOERR = 74 |
paul@0 | 26 | EX_TEMPFAIL = 75 |
paul@0 | 27 | EX_PROTOCOL = 76 |
paul@0 | 28 | EX_NOPERM = 77 |
paul@0 | 29 | EX_CONFIG = 78 |
paul@0 | 30 | |
paul@0 | 31 | # Permitted iTIP content types. |
paul@0 | 32 | |
paul@0 | 33 | itip_content_types = [ |
paul@0 | 34 | "text/calendar", # from RFC 6047 |
paul@0 | 35 | "text/x-vcalendar", "application/ics", # other possibilities |
paul@0 | 36 | ] |
paul@0 | 37 | |
paul@1 | 38 | def process(f, args): |
paul@0 | 39 | msg = message_from_file(f) |
paul@1 | 40 | print >>open("/tmp/imip.txt", "a"), "----" |
paul@1 | 41 | print >>open("/tmp/imip.txt", "a"), args |
paul@1 | 42 | print >>open("/tmp/imip.txt", "a"), "----" |
paul@1 | 43 | print >>open("/tmp/imip.txt", "a"), msg.as_string() |
paul@1 | 44 | print >>open("/tmp/imip.txt", "a") |
paul@0 | 45 | |
paul@0 | 46 | # Handle messages with iTIP parts. |
paul@0 | 47 | |
paul@0 | 48 | for part in msg.walk(): |
paul@0 | 49 | if part.get_content_type() in itip_content_types and \ |
paul@0 | 50 | part.get_param("method"): |
paul@0 | 51 | |
paul@0 | 52 | handle_itip_part(part) |
paul@0 | 53 | |
paul@0 | 54 | def get_itip_elements(elements): |
paul@0 | 55 | d = {} |
paul@0 | 56 | for name, attr, value in elements: |
paul@0 | 57 | if isinstance(value, list): |
paul@0 | 58 | d[name] = attr, get_itip_elements(value) |
paul@0 | 59 | else: |
paul@2 | 60 | if not d.has_key(name): |
paul@2 | 61 | d[name] = [] |
paul@2 | 62 | d[name].append((attr, value)) |
paul@0 | 63 | return d |
paul@0 | 64 | |
paul@2 | 65 | def get_value(d, name, single=True): |
paul@0 | 66 | if d.has_key(name): |
paul@2 | 67 | values = d[name] |
paul@2 | 68 | if isinstance(values, tuple): |
paul@2 | 69 | return values[1] |
paul@2 | 70 | elif single and len(values) == 1: |
paul@2 | 71 | return values[0][1] |
paul@2 | 72 | else: |
paul@2 | 73 | return map(lambda x: x[1], values) |
paul@0 | 74 | else: |
paul@0 | 75 | return None |
paul@0 | 76 | |
paul@0 | 77 | def handle_itip_part(part): |
paul@0 | 78 | method = part.get_param("method") |
paul@0 | 79 | |
paul@0 | 80 | f = StringIO(part.get_payload(decode=True)) |
paul@0 | 81 | doctype, attrs, elements = parse(f, encoding=part.get_content_charset()) |
paul@0 | 82 | |
paul@0 | 83 | if doctype == "VCALENDAR": |
paul@0 | 84 | itip = get_itip_elements(elements) |
paul@0 | 85 | |
paul@0 | 86 | if get_value(itip, "METHOD") == method: |
paul@2 | 87 | |
paul@2 | 88 | for name, cls in handlers: |
paul@2 | 89 | details = get_value(itip, name) |
paul@2 | 90 | |
paul@2 | 91 | if details: |
paul@2 | 92 | print >>open("/tmp/imip.txt", "a"), details |
paul@2 | 93 | handler = cls(details) |
paul@2 | 94 | print >>open("/tmp/imip.txt", "a"), "Handling", method, "with", handler, "->", methods[method](handler) |
paul@2 | 95 | methods[method](handler)() |
paul@2 | 96 | |
paul@2 | 97 | class Handler: |
paul@2 | 98 | def __init__(self, details): |
paul@2 | 99 | self.details = details |
paul@2 | 100 | self.uid = get_value(details, "UID") |
paul@2 | 101 | self.sequence = get_value(details, "SEQUENCE") |
paul@2 | 102 | self.store = imip_store.FileStore() |
paul@2 | 103 | |
paul@2 | 104 | def publish(self): |
paul@2 | 105 | pass |
paul@2 | 106 | |
paul@2 | 107 | def get_value(self, name, single=False): |
paul@2 | 108 | return get_value(self.details, name, single) |
paul@2 | 109 | |
paul@2 | 110 | class Event(Handler): |
paul@2 | 111 | def add(self): |
paul@2 | 112 | pass |
paul@2 | 113 | |
paul@2 | 114 | def cancel(self): |
paul@2 | 115 | pass |
paul@2 | 116 | |
paul@2 | 117 | def counter(self): |
paul@2 | 118 | pass |
paul@2 | 119 | |
paul@2 | 120 | def declinecounter(self): |
paul@2 | 121 | pass |
paul@2 | 122 | |
paul@2 | 123 | def refresh(self): |
paul@2 | 124 | pass |
paul@2 | 125 | |
paul@2 | 126 | def reply(self): |
paul@2 | 127 | pass |
paul@2 | 128 | |
paul@2 | 129 | def request(self): |
paul@2 | 130 | pass |
paul@2 | 131 | |
paul@2 | 132 | class Freebusy(Handler): |
paul@2 | 133 | def reply(self): |
paul@2 | 134 | attendees = self.get_value("ATTENDEE", False) |
paul@2 | 135 | organiser = self.get_value("ORGANIZER") |
paul@2 | 136 | if not attendees and not organiser: |
paul@2 | 137 | return |
paul@2 | 138 | |
paul@2 | 139 | # Store the reply details for the attendee. |
paul@0 | 140 | |
paul@2 | 141 | def request(self): |
paul@2 | 142 | attendees = self.get_value("ATTENDEE", False) |
paul@2 | 143 | organiser = self.get_value("ORGANIZER") |
paul@2 | 144 | print >>open("/tmp/imip.txt", "a"), attendees, organiser |
paul@2 | 145 | if not attendees and not organiser: |
paul@2 | 146 | return |
paul@2 | 147 | |
paul@2 | 148 | # Get the details for the attendee. |
paul@2 | 149 | |
paul@2 | 150 | for attendee in attendees: |
paul@2 | 151 | freebusy = self.store.get_freebusy(attendee) |
paul@2 | 152 | print >>open("/tmp/imip.txt", "a"), freebusy |
paul@2 | 153 | |
paul@2 | 154 | # Send a reply with the information. |
paul@0 | 155 | |
paul@2 | 156 | class Journal(Handler): |
paul@2 | 157 | def add(self): |
paul@2 | 158 | pass |
paul@2 | 159 | |
paul@2 | 160 | def cancel(self): |
paul@2 | 161 | pass |
paul@2 | 162 | |
paul@2 | 163 | class Todo(Handler): |
paul@2 | 164 | def add(self): |
paul@2 | 165 | pass |
paul@2 | 166 | |
paul@2 | 167 | def cancel(self): |
paul@2 | 168 | pass |
paul@2 | 169 | |
paul@2 | 170 | def counter(self): |
paul@2 | 171 | pass |
paul@0 | 172 | |
paul@2 | 173 | def declinecounter(self): |
paul@2 | 174 | pass |
paul@2 | 175 | |
paul@2 | 176 | def refresh(self): |
paul@2 | 177 | pass |
paul@2 | 178 | |
paul@2 | 179 | def reply(self): |
paul@2 | 180 | pass |
paul@2 | 181 | |
paul@2 | 182 | def request(self): |
paul@2 | 183 | pass |
paul@2 | 184 | |
paul@2 | 185 | # Handler registry. |
paul@0 | 186 | |
paul@2 | 187 | handlers = [ |
paul@2 | 188 | ("VFREEBUSY", Freebusy), |
paul@2 | 189 | ("VEVENT", Event), |
paul@2 | 190 | ("VTODO", Todo), |
paul@2 | 191 | ("VJOURNAL", Journal), |
paul@2 | 192 | ] |
paul@0 | 193 | |
paul@2 | 194 | methods = { |
paul@2 | 195 | "ADD" : lambda handler: handler.add, |
paul@2 | 196 | "CANCEL" : lambda handler: handler.cancel, |
paul@2 | 197 | "COUNTER" : lambda handler: handler.counter, |
paul@2 | 198 | "DECLINECOUNTER" : lambda handler: handler.declinecounter, |
paul@2 | 199 | "PUBLISH" : lambda handler: handler.publish, |
paul@2 | 200 | "REFRESH" : lambda handler: handler.refresh, |
paul@2 | 201 | "REPLY" : lambda handler: handler.reply, |
paul@2 | 202 | "REQUEST" : lambda handler: handler.request, |
paul@2 | 203 | } |
paul@0 | 204 | |
paul@0 | 205 | if __name__ == "__main__": |
paul@1 | 206 | process(sys.stdin, sys.argv[1:]) |
paul@0 | 207 | |
paul@0 | 208 | # vim: tabstop=4 expandtab shiftwidth=4 |