paul@0 | 1 | #!/usr/bin/env python |
paul@0 | 2 | |
paul@0 | 3 | from email import message_from_file |
paul@5 | 4 | from vCalendar import parse, iterwrite |
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@5 | 65 | def get_attr_value(d, name, single=True): |
paul@5 | 66 | if d.has_key(name): |
paul@5 | 67 | values = d[name] |
paul@5 | 68 | if isinstance(values, tuple): |
paul@5 | 69 | return values |
paul@5 | 70 | elif single and len(values) == 1: |
paul@5 | 71 | return values[0] |
paul@5 | 72 | else: |
paul@5 | 73 | return values |
paul@5 | 74 | else: |
paul@5 | 75 | return None |
paul@5 | 76 | |
paul@2 | 77 | def get_value(d, name, single=True): |
paul@0 | 78 | if d.has_key(name): |
paul@2 | 79 | values = d[name] |
paul@2 | 80 | if isinstance(values, tuple): |
paul@2 | 81 | return values[1] |
paul@2 | 82 | elif single and len(values) == 1: |
paul@2 | 83 | return values[0][1] |
paul@2 | 84 | else: |
paul@2 | 85 | return map(lambda x: x[1], values) |
paul@0 | 86 | else: |
paul@0 | 87 | return None |
paul@0 | 88 | |
paul@0 | 89 | def handle_itip_part(part): |
paul@0 | 90 | method = part.get_param("method") |
paul@0 | 91 | |
paul@0 | 92 | f = StringIO(part.get_payload(decode=True)) |
paul@0 | 93 | doctype, attrs, elements = parse(f, encoding=part.get_content_charset()) |
paul@0 | 94 | |
paul@0 | 95 | if doctype == "VCALENDAR": |
paul@0 | 96 | itip = get_itip_elements(elements) |
paul@0 | 97 | |
paul@0 | 98 | if get_value(itip, "METHOD") == method: |
paul@2 | 99 | |
paul@2 | 100 | for name, cls in handlers: |
paul@2 | 101 | details = get_value(itip, name) |
paul@2 | 102 | |
paul@2 | 103 | if details: |
paul@2 | 104 | print >>open("/tmp/imip.txt", "a"), details |
paul@2 | 105 | handler = cls(details) |
paul@2 | 106 | print >>open("/tmp/imip.txt", "a"), "Handling", method, "with", handler, "->", methods[method](handler) |
paul@2 | 107 | methods[method](handler)() |
paul@2 | 108 | |
paul@2 | 109 | class Handler: |
paul@2 | 110 | def __init__(self, details): |
paul@2 | 111 | self.details = details |
paul@2 | 112 | self.uid = get_value(details, "UID") |
paul@2 | 113 | self.sequence = get_value(details, "SEQUENCE") |
paul@2 | 114 | self.store = imip_store.FileStore() |
paul@2 | 115 | |
paul@5 | 116 | def get_attr_value(self, name, single=True): |
paul@5 | 117 | return get_attr_value(self.details, name, single) |
paul@5 | 118 | |
paul@5 | 119 | def get_value(self, name, single=True): |
paul@2 | 120 | return get_value(self.details, name, single) |
paul@2 | 121 | |
paul@2 | 122 | class Event(Handler): |
paul@6 | 123 | |
paul@6 | 124 | "An event handler." |
paul@6 | 125 | |
paul@2 | 126 | def add(self): |
paul@2 | 127 | pass |
paul@2 | 128 | |
paul@2 | 129 | def cancel(self): |
paul@2 | 130 | pass |
paul@2 | 131 | |
paul@2 | 132 | def counter(self): |
paul@2 | 133 | pass |
paul@2 | 134 | |
paul@2 | 135 | def declinecounter(self): |
paul@2 | 136 | pass |
paul@2 | 137 | |
paul@6 | 138 | def publish(self): |
paul@6 | 139 | pass |
paul@6 | 140 | |
paul@2 | 141 | def refresh(self): |
paul@2 | 142 | pass |
paul@2 | 143 | |
paul@2 | 144 | def reply(self): |
paul@6 | 145 | |
paul@6 | 146 | "Since this handler does not send requests, it will not handle replies." |
paul@6 | 147 | |
paul@2 | 148 | pass |
paul@2 | 149 | |
paul@2 | 150 | def request(self): |
paul@2 | 151 | pass |
paul@2 | 152 | |
paul@2 | 153 | class Freebusy(Handler): |
paul@6 | 154 | |
paul@6 | 155 | "A free/busy handler." |
paul@6 | 156 | |
paul@6 | 157 | def publish(self): |
paul@6 | 158 | pass |
paul@6 | 159 | |
paul@2 | 160 | def reply(self): |
paul@2 | 161 | |
paul@6 | 162 | "Since this handler does not send requests, it will not handle replies." |
paul@6 | 163 | |
paul@6 | 164 | pass |
paul@0 | 165 | |
paul@2 | 166 | def request(self): |
paul@6 | 167 | |
paul@6 | 168 | """ |
paul@6 | 169 | Respond to a request by sending a reply containing free/busy information |
paul@6 | 170 | for each indicated attendee. |
paul@6 | 171 | """ |
paul@6 | 172 | |
paul@5 | 173 | attendees = self.get_attr_value("ATTENDEE", False) |
paul@5 | 174 | organiser = self.get_attr_value("ORGANIZER") |
paul@5 | 175 | |
paul@2 | 176 | if not attendees and not organiser: |
paul@2 | 177 | return |
paul@2 | 178 | |
paul@5 | 179 | organiser_attr, organiser = organiser |
paul@5 | 180 | |
paul@2 | 181 | # Get the details for the attendee. |
paul@2 | 182 | |
paul@5 | 183 | out = open("/tmp/imip.txt", "a") |
paul@5 | 184 | try: |
paul@5 | 185 | w = iterwrite(out) |
paul@5 | 186 | |
paul@5 | 187 | calendar = [] |
paul@5 | 188 | cwrite = calendar.append |
paul@5 | 189 | cwrite(("METHOD", {}, "REPLY")) |
paul@5 | 190 | cwrite(("VERSION", {}, "2.0")) |
paul@2 | 191 | |
paul@5 | 192 | for attendee_attr, attendee in attendees: |
paul@5 | 193 | freebusy = self.store.get_freebusy(attendee) |
paul@5 | 194 | if freebusy: |
paul@5 | 195 | record = [] |
paul@5 | 196 | rwrite = record.append |
paul@5 | 197 | rwrite(("ORGANIZER", organiser_attr, organiser)) |
paul@5 | 198 | rwrite(("ATTENDEE", attendee_attr, attendee)) |
paul@5 | 199 | rwrite(("UID", {}, self.uid)) |
paul@5 | 200 | |
paul@5 | 201 | for start, end in freebusy: |
paul@5 | 202 | rwrite(("FREEBUSY", {}, [start, end])) |
paul@5 | 203 | |
paul@5 | 204 | cwrite(("VFREEBUSY", {}, record)) |
paul@5 | 205 | |
paul@5 | 206 | # Send a reply with the information. |
paul@5 | 207 | |
paul@5 | 208 | w.write("VCALENDAR", {}, calendar) |
paul@5 | 209 | |
paul@5 | 210 | finally: |
paul@5 | 211 | out.close() |
paul@0 | 212 | |
paul@2 | 213 | class Journal(Handler): |
paul@6 | 214 | |
paul@6 | 215 | "A journal entry handler." |
paul@6 | 216 | |
paul@2 | 217 | def add(self): |
paul@2 | 218 | pass |
paul@2 | 219 | |
paul@2 | 220 | def cancel(self): |
paul@2 | 221 | pass |
paul@2 | 222 | |
paul@6 | 223 | def publish(self): |
paul@6 | 224 | pass |
paul@6 | 225 | |
paul@2 | 226 | class Todo(Handler): |
paul@6 | 227 | |
paul@6 | 228 | "A to-do item handler." |
paul@6 | 229 | |
paul@2 | 230 | def add(self): |
paul@2 | 231 | pass |
paul@2 | 232 | |
paul@2 | 233 | def cancel(self): |
paul@2 | 234 | pass |
paul@2 | 235 | |
paul@2 | 236 | def counter(self): |
paul@2 | 237 | pass |
paul@0 | 238 | |
paul@2 | 239 | def declinecounter(self): |
paul@2 | 240 | pass |
paul@2 | 241 | |
paul@6 | 242 | def publish(self): |
paul@6 | 243 | pass |
paul@6 | 244 | |
paul@2 | 245 | def refresh(self): |
paul@2 | 246 | pass |
paul@2 | 247 | |
paul@2 | 248 | def reply(self): |
paul@6 | 249 | |
paul@6 | 250 | "Since this handler does not send requests, it will not handle replies." |
paul@6 | 251 | |
paul@2 | 252 | pass |
paul@2 | 253 | |
paul@2 | 254 | def request(self): |
paul@2 | 255 | pass |
paul@2 | 256 | |
paul@2 | 257 | # Handler registry. |
paul@0 | 258 | |
paul@2 | 259 | handlers = [ |
paul@2 | 260 | ("VFREEBUSY", Freebusy), |
paul@2 | 261 | ("VEVENT", Event), |
paul@2 | 262 | ("VTODO", Todo), |
paul@2 | 263 | ("VJOURNAL", Journal), |
paul@2 | 264 | ] |
paul@0 | 265 | |
paul@2 | 266 | methods = { |
paul@2 | 267 | "ADD" : lambda handler: handler.add, |
paul@2 | 268 | "CANCEL" : lambda handler: handler.cancel, |
paul@2 | 269 | "COUNTER" : lambda handler: handler.counter, |
paul@2 | 270 | "DECLINECOUNTER" : lambda handler: handler.declinecounter, |
paul@2 | 271 | "PUBLISH" : lambda handler: handler.publish, |
paul@2 | 272 | "REFRESH" : lambda handler: handler.refresh, |
paul@2 | 273 | "REPLY" : lambda handler: handler.reply, |
paul@2 | 274 | "REQUEST" : lambda handler: handler.request, |
paul@2 | 275 | } |
paul@0 | 276 | |
paul@0 | 277 | if __name__ == "__main__": |
paul@1 | 278 | process(sys.stdin, sys.argv[1:]) |
paul@0 | 279 | |
paul@0 | 280 | # vim: tabstop=4 expandtab shiftwidth=4 |