citadel
About: Citadel is an advanced messaging and collaboration system for groupware and BBS applications (preferred OS: Linux).
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serv_calendar.c
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1/*
2 * This module implements iCalendar object processing and the Calendar>
3 * room on a Citadel server. It handles iCalendar objects using the
4 * iTIP protocol. See RFCs 2445 and 2446.
5 *
6 * Copyright (c) 1987-2021 by the citadel.org team
7 *
8 * This program is open source software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 3.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17#define PRODID "-//Citadel//NONSGML Citadel Calendar//EN"
18
19#include "ctdl_module.h"
20#include <libical/ical.h>
21#include "msgbase.h"
22#include "internet_addressing.h"
23#include "serv_calendar.h"
24#include "room_ops.h"
25#include "euidindex.h"
26#include "default_timezone.h"
27#include "config.h"
28
31 icalcomponent *cal;
32};
33
34
35/*
36 * Utility function to create a new VCALENDAR component with some of the
37 * required fields already set the way we like them.
38 */
40 icalcomponent *encaps;
41
42 encaps = icalcomponent_new_vcalendar();
43 if (encaps == NULL) {
44 syslog(LOG_ERR, "calendar: could not allocate component");
45 return NULL;
46 }
47
48 /* Set the Product ID */
49 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
50
51 /* Set the Version Number */
52 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
53
54 return(encaps);
55}
56
57
58/*
59 * Utility function to encapsulate a subcomponent into a full VCALENDAR
60 */
61icalcomponent *ical_encapsulate_subcomponent(icalcomponent *subcomp) {
62 icalcomponent *encaps;
63
64 /* If we're already looking at a full VCALENDAR component,
65 * don't bother ... just return itself.
66 */
67 if (icalcomponent_isa(subcomp) == ICAL_VCALENDAR_COMPONENT) {
68 return subcomp;
69 }
70
71 /* Encapsulate the VEVENT component into a complete VCALENDAR */
73 if (encaps == NULL) return NULL;
74
75 /* Encapsulate the subcomponent inside */
76 icalcomponent_add_component(encaps, subcomp);
77
78 /* Return the object we just created. */
79 return(encaps);
80}
81
82
83/*
84 * Write a calendar object into the specified user's calendar room.
85 * If the supplied user is NULL, this function writes the calendar object
86 * to the currently selected room.
87 */
88void ical_write_to_cal(struct ctdluser *u, icalcomponent *cal) {
89 char *ser = NULL;
90 long serlen;
91 icalcomponent *encaps = NULL;
92 struct CtdlMessage *msg = NULL;
93 icalcomponent *tmp=NULL;
94
95 if (cal == NULL) return;
96
97 /* If the supplied object is a subcomponent, encapsulate it in
98 * a full VCALENDAR component, and save that instead.
99 */
100 if (icalcomponent_isa(cal) != ICAL_VCALENDAR_COMPONENT) {
101 tmp = icalcomponent_new_clone(cal);
102 encaps = ical_encapsulate_subcomponent(tmp);
103 ical_write_to_cal(u, encaps);
104 icalcomponent_free(tmp);
105 icalcomponent_free(encaps);
106 return;
107 }
108
109 ser = icalcomponent_as_ical_string_r(cal);
110 if (ser == NULL) return;
111
112 serlen = strlen(ser);
113
114 /* If the caller supplied a user, write to that user's default calendar room */
115 if (u) {
116 /* This handy API function does all the work for us. */
117 CtdlWriteObject(USERCALENDARROOM, /* which room */
118 "text/calendar", /* MIME type */
119 ser, /* data */
120 serlen + 1, /* length */
121 u, /* which user */
122 0, /* not binary */
123 0 /* no flags */
124 );
125 }
126
127 /* If the caller did not supply a user, write to the currently selected room */
128 if (!u) {
129 struct CitContext *CCC = CC;
130 StrBuf *MsgBody;
131
132 msg = malloc(sizeof(struct CtdlMessage));
133 memset(msg, 0, sizeof(struct CtdlMessage));
136 msg->cm_format_type = 4;
137 CM_SetField(msg, eAuthor, CCC->user.fullname, strlen(CCC->user.fullname));
138 CM_SetField(msg, eOriginalRoom, CCC->room.QRname, strlen(CCC->room.QRname));
139
140 MsgBody = NewStrBufPlain(NULL, serlen + 100);
141 StrBufAppendBufPlain(MsgBody, HKEY("Content-type: text/calendar\r\n\r\n"), 0);
142 StrBufAppendBufPlain(MsgBody, ser, serlen, 0);
143
144 CM_SetAsFieldSB(msg, eMesageText, &MsgBody);
145
146 /* Now write the data */
147 CtdlSubmitMsg(msg, NULL, "");
148 CM_Free(msg);
149 }
150
151 /* In either case, now we can free the serialized calendar object */
152 free(ser);
153}
154
155
156/*
157 * Send a reply to a meeting invitation.
158 *
159 * 'request' is the invitation to reply to.
160 * 'action' is the string "accept" or "decline" or "tentative".
161 *
162 */
163void ical_send_a_reply(icalcomponent *request, char *action) {
164 icalcomponent *the_reply = NULL;
165 icalcomponent *vevent = NULL;
166 icalproperty *attendee = NULL;
167 char attendee_string[SIZ];
168 icalproperty *organizer = NULL;
169 char organizer_string[SIZ];
170 icalproperty *summary = NULL;
171 char summary_string[SIZ];
172 icalproperty *me_attend = NULL;
173 struct recptypes *recp = NULL;
174 icalparameter *partstat = NULL;
175 char *serialized_reply = NULL;
176 char *reply_message_text = NULL;
177 const char *ch;
178 struct CtdlMessage *msg = NULL;
179 struct recptypes *valid = NULL;
180
181 *organizer_string = '\0';
182 strcpy(summary_string, "Calendar item");
183
184 if (request == NULL) {
185 syslog(LOG_ERR, "calendar: trying to reply to NULL event");
186 return;
187 }
188
189 the_reply = icalcomponent_new_clone(request);
190 if (the_reply == NULL) {
191 syslog(LOG_ERR, "calendar: cannot clone request");
192 return;
193 }
194
195 /* Change the method from REQUEST to REPLY */
196 icalcomponent_set_method(the_reply, ICAL_METHOD_REPLY);
197
198 vevent = icalcomponent_get_first_component(the_reply, ICAL_VEVENT_COMPONENT);
199 if (vevent != NULL) {
200 /* Hunt for attendees, removing ones that aren't us.
201 * (Actually, remove them all, cloning our own one so we can
202 * re-insert it later)
203 */
204 while (attendee = icalcomponent_get_first_property(vevent,
205 ICAL_ATTENDEE_PROPERTY), (attendee != NULL)
206 ) {
207 ch = icalproperty_get_attendee(attendee);
208 if ((ch != NULL) && !strncasecmp(ch, "MAILTO:", 7)) {
209 safestrncpy(attendee_string, ch + 7, sizeof (attendee_string));
210 striplt(attendee_string);
211 recp = validate_recipients(attendee_string, NULL, 0);
212 if (recp != NULL) {
213 if (!strcasecmp(recp->recp_local, CC->user.fullname)) {
214 if (me_attend) icalproperty_free(me_attend);
215 me_attend = icalproperty_new_clone(attendee);
216 }
217 free_recipients(recp);
218 }
219 }
220
221 /* Remove it... */
222 icalcomponent_remove_property(vevent, attendee);
223 icalproperty_free(attendee);
224 }
225
226 /* We found our own address in the attendee list. */
227 if (me_attend) {
228 /* Change the partstat from NEEDS-ACTION to ACCEPT or DECLINE */
229 icalproperty_remove_parameter_by_kind(me_attend, ICAL_PARTSTAT_PARAMETER);
230
231 if (!strcasecmp(action, "accept")) {
232 partstat = icalparameter_new_partstat(ICAL_PARTSTAT_ACCEPTED);
233 }
234 else if (!strcasecmp(action, "decline")) {
235 partstat = icalparameter_new_partstat(ICAL_PARTSTAT_DECLINED);
236 }
237 else if (!strcasecmp(action, "tentative")) {
238 partstat = icalparameter_new_partstat(ICAL_PARTSTAT_TENTATIVE);
239 }
240
241 if (partstat) icalproperty_add_parameter(me_attend, partstat);
242
243 /* Now insert it back into the vevent. */
244 icalcomponent_add_property(vevent, me_attend);
245 }
246
247 /* Figure out who to send this thing to */
248 organizer = icalcomponent_get_first_property(vevent, ICAL_ORGANIZER_PROPERTY);
249 if (organizer != NULL) {
250 if (icalproperty_get_organizer(organizer)) {
251 strcpy(organizer_string,
252 icalproperty_get_organizer(organizer) );
253 }
254 }
255 if (!strncasecmp(organizer_string, "MAILTO:", 7)) {
256 strcpy(organizer_string, &organizer_string[7]);
257 striplt(organizer_string);
258 } else {
259 strcpy(organizer_string, "");
260 }
261
262 /* Extract the summary string -- we'll use it as the
263 * message subject for the reply
264 */
265 summary = icalcomponent_get_first_property(vevent, ICAL_SUMMARY_PROPERTY);
266 if (summary != NULL) {
267 if (icalproperty_get_summary(summary)) {
268 strcpy(summary_string,
269 icalproperty_get_summary(summary) );
270 }
271 }
272 }
273
274 /* Now generate the reply message and send it out. */
275 serialized_reply = icalcomponent_as_ical_string_r(the_reply);
276 icalcomponent_free(the_reply); /* don't need this anymore */
277 if (serialized_reply == NULL) return;
278
279 reply_message_text = malloc(strlen(serialized_reply) + SIZ);
280 if (reply_message_text != NULL) {
281 sprintf(reply_message_text,
282 "Content-type: text/calendar; charset=\"utf-8\"\r\n\r\n%s\r\n",
283 serialized_reply
284 );
285
286 msg = CtdlMakeMessage(&CC->user,
287 organizer_string, /* to */
288 "", /* cc */
289 CC->room.QRname, 0, FMT_RFC822,
290 "",
291 "",
292 summary_string, /* Use summary for subject */
293 NULL,
294 reply_message_text,
295 NULL);
296
297 if (msg != NULL) {
298 valid = validate_recipients(organizer_string, NULL, 0);
299 CtdlSubmitMsg(msg, valid, "");
300 CM_Free(msg);
301 free_recipients(valid);
302 }
303 }
304 free(serialized_reply);
305}
306
307
308/*
309 * Callback function for mime parser that hunts for calendar content types
310 * and turns them into calendar objects. If something is found, it is placed
311 * in ird->cal, and the caller now owns that memory and is responsible for freeing it.
312 */
313void ical_locate_part(char *name, char *filename, char *partnum, char *disp,
314 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
315 char *cbid, void *cbuserdata) {
316
317 struct ical_respond_data *ird = NULL;
318
319 ird = (struct ical_respond_data *) cbuserdata;
320
321 /* desired_partnum can be set to "_HUNT_" to have it just look for
322 * the first part with a content type of text/calendar. Otherwise
323 * we have to only process the right one.
324 */
325 if (strcasecmp(ird->desired_partnum, "_HUNT_")) {
326 if (strcasecmp(partnum, ird->desired_partnum)) {
327 return;
328 }
329 }
330
331 if ( (strcasecmp(cbtype, "text/calendar"))
332 && (strcasecmp(cbtype, "application/ics")) ) {
333 return;
334 }
335
336 if (ird->cal != NULL) {
337 icalcomponent_free(ird->cal);
338 ird->cal = NULL;
339 }
340
341 ird->cal = icalcomponent_new_from_string(content);
342}
343
344
345/*
346 * Respond to a meeting request.
347 */
348void ical_respond(long msgnum, char *partnum, char *action) {
349 struct CtdlMessage *msg = NULL;
350 struct ical_respond_data ird;
351
352 if (
353 (strcasecmp(action, "accept"))
354 && (strcasecmp(action, "decline"))
355 ) {
356 cprintf("%d Action must be 'accept' or 'decline'\n",
358 );
359 return;
360 }
361
362 msg = CtdlFetchMessage(msgnum, 1);
363 if (msg == NULL) {
364 cprintf("%d Message %ld not found.\n",
366 (long)msgnum
367 );
368 return;
369 }
370
371 memset(&ird, 0, sizeof ird);
372 strcpy(ird.desired_partnum, partnum);
373 mime_parser(CM_RANGE(msg, eMesageText),
374 *ical_locate_part, /* callback function */
375 NULL, NULL,
376 (void *) &ird, /* user data */
377 0
378 );
379
380 /* We're done with the incoming message, because we now have a
381 * calendar object in memory.
382 */
383 CM_Free(msg);
384
385 /*
386 * Here is the real meat of this function. Handle the event.
387 */
388 if (ird.cal != NULL) {
389 /* Save this in the user's calendar if necessary */
390 if (!strcasecmp(action, "accept")) {
391 ical_write_to_cal(&CC->user, ird.cal);
392 }
393
394 /* Send a reply if necessary */
395 if (icalcomponent_get_method(ird.cal) == ICAL_METHOD_REQUEST) {
396 ical_send_a_reply(ird.cal, action);
397 }
398
399 /* We used to delete the invitation after handling it.
400 * We don't do that anymore, but here is the code that handled it:
401 * CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
402 */
403
404 /* Free the memory we allocated and return a response. */
405 icalcomponent_free(ird.cal);
406 ird.cal = NULL;
407 cprintf("%d ok\n", CIT_OK);
408 return;
409 }
410 else {
411 cprintf("%d No calendar object found\n", ERROR + ROOM_NOT_FOUND);
412 return;
413 }
414
415 /* should never get here */
416}
417
418
419/*
420 * Figure out the UID of the calendar event being referred to in a
421 * REPLY object. This function is recursive.
422 */
423void ical_learn_uid_of_reply(char *uidbuf, icalcomponent *cal) {
424 icalcomponent *subcomponent;
425 icalproperty *p;
426
427 /* If this object is a REPLY, then extract the UID. */
428 if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
429 p = icalcomponent_get_first_property(cal, ICAL_UID_PROPERTY);
430 if (p != NULL) {
431 strcpy(uidbuf, icalproperty_get_comment(p));
432 }
433 }
434
435 /* Otherwise, recurse through any VEVENT subcomponents. We do NOT want the
436 * UID of the reply; we want the UID of the invitation being replied to.
437 */
438 for (subcomponent = icalcomponent_get_first_component(cal, ICAL_VEVENT_COMPONENT);
439 subcomponent != NULL;
440 subcomponent = icalcomponent_get_next_component(cal, ICAL_VEVENT_COMPONENT) ) {
441 ical_learn_uid_of_reply(uidbuf, subcomponent);
442 }
443}
444
445
446/*
447 * ical_update_my_calendar_with_reply() refers to this callback function; when we
448 * locate the message containing the calendar event we're replying to, this function
449 * gets called. It basically just sticks the message number in a supplied buffer.
450 */
451void ical_hunt_for_event_to_update(long msgnum, void *data) {
452 long *msgnumptr;
453
454 msgnumptr = (long *) data;
455 *msgnumptr = msgnum;
456}
457
458
460 icalcomponent *c;
461};
462
463/*
464 * Callback function for mime parser that hunts for calendar content types
465 * and turns them into calendar objects (called by ical_update_my_calendar_with_reply()
466 * to fetch the object being updated)
467 */
468void ical_locate_original_event(char *name, char *filename, char *partnum, char *disp,
469 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
470 char *cbid, void *cbuserdata) {
471
472 struct original_event_container *oec = NULL;
473
474 if ( (strcasecmp(cbtype, "text/calendar"))
475 && (strcasecmp(cbtype, "application/ics")) ) {
476 return;
477 }
478 oec = (struct original_event_container *) cbuserdata;
479 if (oec->c != NULL) {
480 icalcomponent_free(oec->c);
481 }
482 oec->c = icalcomponent_new_from_string(content);
483}
484
485
486/*
487 * Merge updated attendee information from a REPLY into an existing event.
488 */
489void ical_merge_attendee_reply(icalcomponent *event, icalcomponent *reply) {
490 icalcomponent *c;
491 icalproperty *e_attendee, *r_attendee;
492
493 /* First things first. If we're not looking at a VEVENT component,
494 * recurse through subcomponents until we find one.
495 */
496 if (icalcomponent_isa(event) != ICAL_VEVENT_COMPONENT) {
497 for (c = icalcomponent_get_first_component(event, ICAL_VEVENT_COMPONENT);
498 c != NULL;
499 c = icalcomponent_get_next_component(event, ICAL_VEVENT_COMPONENT) ) {
501 }
502 return;
503 }
504
505 /* Now do the same thing with the reply.
506 */
507 if (icalcomponent_isa(reply) != ICAL_VEVENT_COMPONENT) {
508 for (c = icalcomponent_get_first_component(reply, ICAL_VEVENT_COMPONENT);
509 c != NULL;
510 c = icalcomponent_get_next_component(reply, ICAL_VEVENT_COMPONENT) ) {
512 }
513 return;
514 }
515
516 /* Clone the reply, because we're going to rip its guts out. */
517 reply = icalcomponent_new_clone(reply);
518
519 /* At this point we're looking at the correct subcomponents.
520 * Iterate through the attendees looking for a match.
521 */
522STARTOVER:
523 for (e_attendee = icalcomponent_get_first_property(event, ICAL_ATTENDEE_PROPERTY);
524 e_attendee != NULL;
525 e_attendee = icalcomponent_get_next_property(event, ICAL_ATTENDEE_PROPERTY)) {
526
527 for (r_attendee = icalcomponent_get_first_property(reply, ICAL_ATTENDEE_PROPERTY);
528 r_attendee != NULL;
529 r_attendee = icalcomponent_get_next_property(reply, ICAL_ATTENDEE_PROPERTY)) {
530
531 /* Check to see if these two attendees match...
532 */
533 const char *e, *r;
534 e = icalproperty_get_attendee(e_attendee);
535 r = icalproperty_get_attendee(r_attendee);
536
537 if ((e != NULL) &&
538 (r != NULL) &&
539 !strcasecmp(e, r)) {
540 /* ...and if they do, remove the attendee from the event
541 * and replace it with the attendee from the reply. (The
542 * reply's copy will have the same address, but an updated
543 * status.)
544 */
545 icalcomponent_remove_property(event, e_attendee);
546 icalproperty_free(e_attendee);
547 icalcomponent_remove_property(reply, r_attendee);
548 icalcomponent_add_property(event, r_attendee);
549
550 /* Since we diddled both sets of attendees, we have to start
551 * the iteration over again. This will not create an infinite
552 * loop because we removed the attendee from the reply. (That's
553 * why we cloned the reply, and that's what we mean by "ripping
554 * its guts out.")
555 */
556 goto STARTOVER;
557 }
558
559 }
560 }
561
562 /* Free the *clone* of the reply. */
563 icalcomponent_free(reply);
564}
565
566
567/*
568 * Handle an incoming RSVP (object with method==ICAL_METHOD_REPLY) for a
569 * calendar event. The object has already been deserialized for us; all
570 * we have to do here is hunt for the event in our calendar, merge in the
571 * updated attendee status, and save it again.
572 *
573 * This function returns 0 on success, 1 if the event was not found in the
574 * user's calendar, or 2 if an internal error occurred.
575 */
576int ical_update_my_calendar_with_reply(icalcomponent *cal) {
577 char uid[SIZ];
578 char hold_rm[ROOMNAMELEN];
579 long msgnum_being_replaced = 0;
580 struct CtdlMessage *msg = NULL;
581 struct original_event_container oec;
582 icalcomponent *original_event;
583 char *serialized_event = NULL;
584 char roomname[ROOMNAMELEN];
585 char *message_text = NULL;
586
587 /* Figure out just what event it is we're dealing with */
588 strcpy(uid, "--==<< InVaLiD uId >>==--");
589 ical_learn_uid_of_reply(uid, cal);
590 syslog(LOG_DEBUG, "calendar: UID of event being replied to is <%s>", uid);
591
592 strcpy(hold_rm, CC->room.QRname); /* save current room */
593
594 if (CtdlGetRoom(&CC->room, USERCALENDARROOM) != 0) {
595 CtdlGetRoom(&CC->room, hold_rm);
596 syslog(LOG_ERR, "calendar: cannot get user calendar room");
597 return(2);
598 }
599
600 /*
601 * Look in the EUID index for a message with
602 * the Citadel EUID set to the value we're looking for. Since
603 * Citadel always sets the message EUID to the iCalendar UID of
604 * the event, this will work.
605 */
606 msgnum_being_replaced = CtdlLocateMessageByEuid(uid, &CC->room);
607
608 CtdlGetRoom(&CC->room, hold_rm); /* return to saved room */
609
610 syslog(LOG_DEBUG, "calendar: msgnum_being_replaced == %ld", msgnum_being_replaced);
611 if (msgnum_being_replaced == 0) {
612 return(1); /* no calendar event found */
613 }
614
615 /* Now we know the ID of the message containing the event being updated.
616 * We don't actually have to delete it; that'll get taken care of by the
617 * server when we save another event with the same UID. This just gives
618 * us the ability to load the event into memory so we can diddle the
619 * attendees.
620 */
621 msg = CtdlFetchMessage(msgnum_being_replaced, 1);
622 if (msg == NULL) {
623 return(2); /* internal error */
624 }
625 oec.c = NULL;
626 mime_parser(CM_RANGE(msg, eMesageText),
627 *ical_locate_original_event, /* callback function */
628 NULL, NULL,
629 &oec, /* user data */
630 0
631 );
632 CM_Free(msg);
633
634 original_event = oec.c;
635 if (original_event == NULL) {
636 syslog(LOG_ERR, "calendar: original_component is NULL");
637 return(2);
638 }
639
640 /* Merge the attendee's updated status into the event */
641 ical_merge_attendee_reply(original_event, cal);
642
643 /* Serialize it */
644 serialized_event = icalcomponent_as_ical_string_r(original_event);
645 icalcomponent_free(original_event); /* Don't need this anymore. */
646 if (serialized_event == NULL) return(2);
647
648 CtdlMailboxName(roomname, sizeof roomname, &CC->user, USERCALENDARROOM);
649
650 message_text = malloc(strlen(serialized_event) + SIZ);
651 if (message_text != NULL) {
652 sprintf(message_text,
653 "Content-type: text/calendar; charset=\"utf-8\"\r\n\r\n%s\r\n",
654 serialized_event
655 );
656
657 msg = CtdlMakeMessage(&CC->user,
658 "", /* No recipient */
659 "", /* No recipient */
660 roomname,
661 0, FMT_RFC822,
662 "",
663 "",
664 "", /* no subject */
665 NULL,
666 message_text,
667 NULL);
668
669 if (msg != NULL) {
670 CIT_ICAL->avoid_sending_invitations = 1;
671 CtdlSubmitMsg(msg, NULL, roomname);
672 CM_Free(msg);
673 CIT_ICAL->avoid_sending_invitations = 0;
674 }
675 }
676 free(serialized_event);
677 return(0);
678}
679
680
681/*
682 * Handle an incoming RSVP for an event. (This is the server subcommand part; it
683 * simply extracts the calendar object from the message, deserializes it, and
684 * passes it up to ical_update_my_calendar_with_reply() for processing.
685 */
686void ical_handle_rsvp(long msgnum, char *partnum, char *action) {
687 struct CtdlMessage *msg = NULL;
688 struct ical_respond_data ird;
689 int ret;
690
691 if (
692 (strcasecmp(action, "update"))
693 && (strcasecmp(action, "ignore"))
694 ) {
695 cprintf("%d Action must be 'update' or 'ignore'\n",
697 );
698 return;
699 }
700
701 msg = CtdlFetchMessage(msgnum, 1);
702 if (msg == NULL) {
703 cprintf("%d Message %ld not found.\n",
705 (long)msgnum
706 );
707 return;
708 }
709
710 memset(&ird, 0, sizeof ird);
711 strcpy(ird.desired_partnum, partnum);
712 mime_parser(CM_RANGE(msg, eMesageText),
713 *ical_locate_part, /* callback function */
714 NULL, NULL,
715 (void *) &ird, /* user data */
716 0
717 );
718
719 /* We're done with the incoming message, because we now have a
720 * calendar object in memory.
721 */
722 CM_Free(msg);
723
724 /*
725 * Here is the real meat of this function. Handle the event.
726 */
727 if (ird.cal != NULL) {
728 /* Update the user's calendar if necessary */
729 if (!strcasecmp(action, "update")) {
731 if (ret == 0) {
732 cprintf("%d Your calendar has been updated with this reply.\n",
733 CIT_OK);
734 }
735 else if (ret == 1) {
736 cprintf("%d This event does not exist in your calendar.\n",
738 }
739 else {
740 cprintf("%d An internal error occurred.\n",
742 }
743 }
744 else {
745 cprintf("%d This reply has been ignored.\n", CIT_OK);
746 }
747
748 /* Now that we've processed this message, we don't need it
749 * anymore. So delete it. (Don't do this anymore.)
750 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
751 */
752
753 /* Free the memory we allocated and return a response. */
754 icalcomponent_free(ird.cal);
755 ird.cal = NULL;
756 return;
757 }
758 else {
759 cprintf("%d No calendar object found\n", ERROR + ROOM_NOT_FOUND);
760 return;
761 }
762
763 /* should never get here */
764}
765
766
767/*
768 * Search for a property in both the top level and in a VEVENT subcomponent
769 */
771 icalcomponent *cal,
772 icalproperty_kind which_prop
773) {
774 icalproperty *p;
775 icalcomponent *c;
776
777 p = icalcomponent_get_first_property(cal, which_prop);
778 if (p == NULL) {
779 c = icalcomponent_get_first_component(cal,
780 ICAL_VEVENT_COMPONENT);
781 if (c != NULL) {
782 p = icalcomponent_get_first_property(c, which_prop);
783 }
784 }
785 return p;
786}
787
788
789/*
790 * Check to see if two events overlap. Returns nonzero if they do.
791 * (This function is used in both Citadel and WebCit. If you change it in
792 * one place, change it in the other. Better yet, put it in a library.)
793 */
795 struct icaltimetype t1start,
796 struct icaltimetype t1end,
797 struct icaltimetype t2start,
798 struct icaltimetype t2end
799) {
800 if (icaltime_is_null_time(t1start)) return(0);
801 if (icaltime_is_null_time(t2start)) return(0);
802
803 /* if either event lacks end time, assume end = start */
804 if (icaltime_is_null_time(t1end))
805 memcpy(&t1end, &t1start, sizeof(struct icaltimetype));
806 else {
807 if (t1end.is_date && icaltime_compare(t1start, t1end)) {
808 /*
809 * the end date is non-inclusive so adjust it by one
810 * day because our test is inclusive, note that a day is
811 * not too much because we are talking about all day
812 * events
813 * if start = end we assume that nevertheless the whole
814 * day is meant
815 */
816 icaltime_adjust(&t1end, -1, 0, 0, 0);
817 }
818 }
819
820 if (icaltime_is_null_time(t2end))
821 memcpy(&t2end, &t2start, sizeof(struct icaltimetype));
822 else {
823 if (t2end.is_date && icaltime_compare(t2start, t2end)) {
824 icaltime_adjust(&t2end, -1, 0, 0, 0);
825 }
826 }
827
828 /* First, check for all-day events */
829 if (t1start.is_date || t2start.is_date) {
830 /* If event 1 ends before event 2 starts, we're in the clear. */
831 if (icaltime_compare_date_only(t1end, t2start) < 0) return(0);
832
833 /* If event 2 ends before event 1 starts, we're also ok. */
834 if (icaltime_compare_date_only(t2end, t1start) < 0) return(0);
835
836 return(1);
837 }
838
839 /* syslog(LOG_DEBUG, "Comparing t1start %d:%d t1end %d:%d t2start %d:%d t2end %d:%d",
840 t1start.hour, t1start.minute, t1end.hour, t1end.minute,
841 t2start.hour, t2start.minute, t2end.hour, t2end.minute);
842 */
843
844 /* Now check for overlaps using date *and* time. */
845
846 /* If event 1 ends before event 2 starts, we're in the clear. */
847 if (icaltime_compare(t1end, t2start) <= 0) return(0);
848 /* syslog(LOG_DEBUG, "calendar: first passed"); */
849
850 /* If event 2 ends before event 1 starts, we're also ok. */
851 if (icaltime_compare(t2end, t1start) <= 0) return(0);
852 /* syslog(LOG_DEBUG, "calendar: second passed"); */
853
854 /* Otherwise, they overlap. */
855 return(1);
856}
857
858
859/*
860 * Phase 6 of "hunt for conflicts"
861 * called by ical_conflicts_phase5()
862 *
863 * Now both the proposed and existing events have been boiled down to start and end times.
864 * Check for overlap and output any conflicts.
865 *
866 * Returns nonzero if a conflict was reported. This allows the caller to stop iterating.
867 */
868int ical_conflicts_phase6(struct icaltimetype t1start,
869 struct icaltimetype t1end,
870 struct icaltimetype t2start,
871 struct icaltimetype t2end,
872 long existing_msgnum,
873 char *conflict_event_uid,
874 char *conflict_event_summary,
875 char *compare_uid)
876{
877 int conflict_reported = 0;
878
879 /* debugging cruft *
880 time_t tt;
881 tt = icaltime_as_timet_with_zone(t1start, t1start.zone);
882 syslog(LOG_DEBUG, "PROPOSED START: %s", ctime(&tt));
883 tt = icaltime_as_timet_with_zone(t1end, t1end.zone);
884 syslog(LOG_DEBUG, " PROPOSED END: %s", ctime(&tt));
885 tt = icaltime_as_timet_with_zone(t2start, t2start.zone);
886 syslog(LOG_DEBUG, "EXISTING START: %s", ctime(&tt));
887 tt = icaltime_as_timet_with_zone(t2end, t2end.zone);
888 syslog(LOG_DEBUG, " EXISTING END: %s", ctime(&tt));
889 * debugging cruft */
890
891 /* compare and output */
892
893 if (ical_ctdl_is_overlap(t1start, t1end, t2start, t2end)) {
894 cprintf("%ld||%s|%s|%d|\n",
895 existing_msgnum,
896 conflict_event_uid,
897 conflict_event_summary,
898 ( (!IsEmptyStr(compare_uid)
899 &&(!strcasecmp(compare_uid,
900 conflict_event_uid))) ? 1 : 0
901 )
902 );
903 conflict_reported = 1;
904 }
905
906 return(conflict_reported);
907}
908
909
910/*
911 * Phase 5 of "hunt for conflicts"
912 * Called by ical_conflicts_phase4()
913 *
914 * We have the proposed event boiled down to start and end times.
915 * Now check it against an existing event.
916 */
917void ical_conflicts_phase5(struct icaltimetype t1start,
918 struct icaltimetype t1end,
919 icalcomponent *existing_event,
920 long existing_msgnum,
921 char *compare_uid)
922{
923 char conflict_event_uid[SIZ];
924 char conflict_event_summary[SIZ];
925 struct icaltimetype t2start, t2end;
926 icalproperty *p;
927
928 /* recur variables */
929 icalproperty *rrule = NULL;
930 struct icalrecurrencetype recur;
931 icalrecur_iterator *ritr = NULL;
932 struct icaldurationtype dur;
933 int num_recur = 0;
934
935 /* initialization */
936 strcpy(conflict_event_uid, "");
937 strcpy(conflict_event_summary, "");
938 t2start = icaltime_null_time();
939 t2end = icaltime_null_time();
940
941 /* existing event stuff */
942 p = ical_ctdl_get_subprop(existing_event, ICAL_DTSTART_PROPERTY);
943 if (p == NULL) return;
944 if (p != NULL) t2start = icalproperty_get_dtstart(p);
945 if (icaltime_is_utc(t2start)) {
946 t2start.zone = icaltimezone_get_utc_timezone();
947 }
948 else {
949 t2start.zone = icalcomponent_get_timezone(existing_event,
950 icalparameter_get_tzid(
951 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
952 )
953 );
954 if (!t2start.zone) {
955 t2start.zone = get_default_icaltimezone();
956 }
957 }
958
959 p = ical_ctdl_get_subprop(existing_event, ICAL_DTEND_PROPERTY);
960 if (p != NULL) {
961 t2end = icalproperty_get_dtend(p);
962
963 if (icaltime_is_utc(t2end)) {
964 t2end.zone = icaltimezone_get_utc_timezone();
965 }
966 else {
967 t2end.zone = icalcomponent_get_timezone(existing_event,
968 icalparameter_get_tzid(
969 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
970 )
971 );
972 if (!t2end.zone) {
973 t2end.zone = get_default_icaltimezone();
974 }
975 }
976 dur = icaltime_subtract(t2end, t2start);
977 }
978 else {
979 memset (&dur, 0, sizeof(struct icaldurationtype));
980 }
981
982 rrule = ical_ctdl_get_subprop(existing_event, ICAL_RRULE_PROPERTY);
983 if (rrule) {
984 recur = icalproperty_get_rrule(rrule);
985 ritr = icalrecur_iterator_new(recur, t2start);
986 }
987
988 do {
989 p = ical_ctdl_get_subprop(existing_event, ICAL_UID_PROPERTY);
990 if (p != NULL) {
991 strcpy(conflict_event_uid, icalproperty_get_comment(p));
992 }
993
994 p = ical_ctdl_get_subprop(existing_event, ICAL_SUMMARY_PROPERTY);
995 if (p != NULL) {
996 strcpy(conflict_event_summary, icalproperty_get_comment(p));
997 }
998
999 if (ical_conflicts_phase6(t1start, t1end, t2start, t2end,
1000 existing_msgnum, conflict_event_uid, conflict_event_summary, compare_uid))
1001 {
1002 num_recur = MAX_RECUR + 1; /* force it out of scope, no need to continue */
1003 }
1004
1005 if (rrule) {
1006 t2start = icalrecur_iterator_next(ritr);
1007 if (!icaltime_is_null_time(t2end)) {
1008 const icaltimezone *hold_zone = t2end.zone;
1009 t2end = icaltime_add(t2start, dur);
1010 t2end.zone = hold_zone;
1011 }
1012 ++num_recur;
1013 }
1014
1015 if (icaltime_compare(t2start, t1end) < 0) {
1016 num_recur = MAX_RECUR + 1; /* force it out of scope */
1017 }
1018
1019 } while ( (rrule) && (!icaltime_is_null_time(t2start)) && (num_recur < MAX_RECUR) );
1020 icalrecur_iterator_free(ritr);
1021}
1022
1023
1024/*
1025 * Phase 4 of "hunt for conflicts"
1026 * Called by ical_hunt_for_conflicts_backend()
1027 *
1028 * At this point we've got it boiled down to two icalcomponent events in memory.
1029 * If they conflict, output something to the client.
1030 */
1031void ical_conflicts_phase4(icalcomponent *proposed_event,
1032 icalcomponent *existing_event,
1033 long existing_msgnum)
1034{
1035 struct icaltimetype t1start, t1end;
1036 icalproperty *p;
1037 char compare_uid[SIZ];
1038
1039 /* recur variables */
1040 icalproperty *rrule = NULL;
1041 struct icalrecurrencetype recur;
1042 icalrecur_iterator *ritr = NULL;
1043 struct icaldurationtype dur;
1044 int num_recur = 0;
1045
1046 /* initialization */
1047 t1end = icaltime_null_time();
1048 *compare_uid = '\0';
1049
1050 /* proposed event stuff */
1051
1052 p = ical_ctdl_get_subprop(proposed_event, ICAL_DTSTART_PROPERTY);
1053 if (p == NULL)
1054 return;
1055 else
1056 t1start = icalproperty_get_dtstart(p);
1057
1058 if (icaltime_is_utc(t1start)) {
1059 t1start.zone = icaltimezone_get_utc_timezone();
1060 }
1061 else {
1062 t1start.zone = icalcomponent_get_timezone(proposed_event,
1063 icalparameter_get_tzid(
1064 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
1065 )
1066 );
1067 if (!t1start.zone) {
1068 t1start.zone = get_default_icaltimezone();
1069 }
1070 }
1071
1072 p = ical_ctdl_get_subprop(proposed_event, ICAL_DTEND_PROPERTY);
1073 if (p != NULL) {
1074 t1end = icalproperty_get_dtend(p);
1075
1076 if (icaltime_is_utc(t1end)) {
1077 t1end.zone = icaltimezone_get_utc_timezone();
1078 }
1079 else {
1080 t1end.zone = icalcomponent_get_timezone(proposed_event,
1081 icalparameter_get_tzid(
1082 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
1083 )
1084 );
1085 if (!t1end.zone) {
1086 t1end.zone = get_default_icaltimezone();
1087 }
1088 }
1089
1090 dur = icaltime_subtract(t1end, t1start);
1091 }
1092 else {
1093 memset (&dur, 0, sizeof(struct icaldurationtype));
1094 }
1095
1096 rrule = ical_ctdl_get_subprop(proposed_event, ICAL_RRULE_PROPERTY);
1097 if (rrule) {
1098 recur = icalproperty_get_rrule(rrule);
1099 ritr = icalrecur_iterator_new(recur, t1start);
1100 }
1101
1102 p = ical_ctdl_get_subprop(proposed_event, ICAL_UID_PROPERTY);
1103 if (p != NULL) {
1104 strcpy(compare_uid, icalproperty_get_comment(p));
1105 }
1106
1107 do {
1108 ical_conflicts_phase5(t1start, t1end, existing_event, existing_msgnum, compare_uid);
1109
1110 if (rrule) {
1111 t1start = icalrecur_iterator_next(ritr);
1112 if (!icaltime_is_null_time(t1end)) {
1113 const icaltimezone *hold_zone = t1end.zone;
1114 t1end = icaltime_add(t1start, dur);
1115 t1end.zone = hold_zone;
1116 }
1117 ++num_recur;
1118 }
1119
1120 } while ( (rrule) && (!icaltime_is_null_time(t1start)) && (num_recur < MAX_RECUR) );
1121 icalrecur_iterator_free(ritr);
1122}
1123
1124
1125/*
1126 * Phase 3 of "hunt for conflicts"
1127 * Called by ical_hunt_for_conflicts()
1128 */
1129void ical_hunt_for_conflicts_backend(long msgnum, void *data) {
1130 icalcomponent *proposed_event;
1131 struct CtdlMessage *msg = NULL;
1132 struct ical_respond_data ird;
1133
1134 proposed_event = (icalcomponent *)data;
1135
1136 msg = CtdlFetchMessage(msgnum, 1);
1137 if (msg == NULL) return;
1138 memset(&ird, 0, sizeof ird);
1139 strcpy(ird.desired_partnum, "_HUNT_");
1140 mime_parser(CM_RANGE(msg, eMesageText),
1141 *ical_locate_part, /* callback function */
1142 NULL, NULL,
1143 (void *) &ird, /* user data */
1144 0
1145 );
1146 CM_Free(msg);
1147
1148 if (ird.cal == NULL) return;
1149
1150 ical_conflicts_phase4(proposed_event, ird.cal, msgnum);
1151 icalcomponent_free(ird.cal);
1152}
1153
1154
1155/*
1156 * Phase 2 of "hunt for conflicts" operation.
1157 * At this point we have a calendar object which represents the VEVENT that
1158 * is proposed for addition to the calendar. Now hunt through the user's
1159 * calendar room, and output zero or more existing VEVENTs which conflict
1160 * with this one.
1161 */
1162void ical_hunt_for_conflicts(icalcomponent *cal) {
1163 char hold_rm[ROOMNAMELEN];
1164
1165 strcpy(hold_rm, CC->room.QRname); /* save current room */
1166
1167 if (CtdlGetRoom(&CC->room, USERCALENDARROOM) != 0) {
1168 CtdlGetRoom(&CC->room, hold_rm);
1169 cprintf("%d You do not have a calendar.\n", ERROR + ROOM_NOT_FOUND);
1170 return;
1171 }
1172
1173 cprintf("%d Conflicting events:\n", LISTING_FOLLOWS);
1174
1176 NULL,
1177 NULL,
1179 (void *) cal
1180 );
1181
1182 cprintf("000\n");
1183 CtdlGetRoom(&CC->room, hold_rm); /* return to saved room */
1184
1185}
1186
1187
1188/*
1189 * Hunt for conflicts (Phase 1 -- retrieve the object and call Phase 2)
1190 */
1191void ical_conflicts(long msgnum, char *partnum) {
1192 struct CtdlMessage *msg = NULL;
1193 struct ical_respond_data ird;
1194
1195 msg = CtdlFetchMessage(msgnum, 1);
1196 if (msg == NULL) {
1197 cprintf("%d Message %ld not found\n",
1199 (long)msgnum
1200 );
1201 return;
1202 }
1203
1204 memset(&ird, 0, sizeof ird);
1205 strcpy(ird.desired_partnum, partnum);
1206 mime_parser(CM_RANGE(msg, eMesageText),
1207 *ical_locate_part, /* callback function */
1208 NULL, NULL,
1209 (void *) &ird, /* user data */
1210 0
1211 );
1212
1213 CM_Free(msg);
1214
1215 if (ird.cal != NULL) {
1217 icalcomponent_free(ird.cal);
1218 return;
1219 }
1220
1221 cprintf("%d No calendar object found\n", ERROR + ROOM_NOT_FOUND);
1222}
1223
1224
1225/*
1226 * Look for busy time in a VEVENT and add it to the supplied VFREEBUSY.
1227 *
1228 * fb The VFREEBUSY component to which we are appending
1229 * top_level_cal The top-level VCALENDAR component which contains a VEVENT to be added
1230 */
1231void ical_add_to_freebusy(icalcomponent *fb, icalcomponent *top_level_cal) {
1232 icalcomponent *cal;
1233 icalproperty *p;
1234 icalvalue *v;
1235 struct icalperiodtype this_event_period = icalperiodtype_null_period();
1236 icaltimetype dtstart;
1237 icaltimetype dtend;
1238
1239 /* recur variables */
1240 icalproperty *rrule = NULL;
1241 struct icalrecurrencetype recur;
1242 icalrecur_iterator *ritr = NULL;
1243 struct icaldurationtype dur;
1244 int num_recur = 0;
1245
1246 if (!top_level_cal) return;
1247
1248 /* Find the VEVENT component containing an event */
1249 cal = icalcomponent_get_first_component(top_level_cal, ICAL_VEVENT_COMPONENT);
1250 if (!cal) return;
1251
1252 /* If this event is not opaque, the user isn't publishing it as
1253 * busy time, so don't bother doing anything else.
1254 */
1255 p = icalcomponent_get_first_property(cal, ICAL_TRANSP_PROPERTY);
1256 if (p != NULL) {
1257 v = icalproperty_get_value(p);
1258 if (v != NULL) {
1259 if (icalvalue_get_transp(v) != ICAL_TRANSP_OPAQUE) {
1260 return;
1261 }
1262 }
1263 }
1264
1265 /*
1266 * Now begin calculating the event start and end times.
1267 */
1268 p = icalcomponent_get_first_property(cal, ICAL_DTSTART_PROPERTY);
1269 if (!p) return;
1270 dtstart = icalproperty_get_dtstart(p);
1271
1272 if (icaltime_is_utc(dtstart)) {
1273 dtstart.zone = icaltimezone_get_utc_timezone();
1274 }
1275 else {
1276 dtstart.zone = icalcomponent_get_timezone(top_level_cal,
1277 icalparameter_get_tzid(
1278 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
1279 )
1280 );
1281 if (!dtstart.zone) {
1282 dtstart.zone = get_default_icaltimezone();
1283 }
1284 }
1285
1286 dtend = icalcomponent_get_dtend(cal);
1287 if (!icaltime_is_null_time(dtend)) {
1288 dur = icaltime_subtract(dtend, dtstart);
1289 }
1290 else {
1291 memset (&dur, 0, sizeof(struct icaldurationtype));
1292 }
1293
1294 /* Is a recurrence specified? If so, get ready to process it... */
1295 rrule = ical_ctdl_get_subprop(cal, ICAL_RRULE_PROPERTY);
1296 if (rrule) {
1297 recur = icalproperty_get_rrule(rrule);
1298 ritr = icalrecur_iterator_new(recur, dtstart);
1299 }
1300
1301 do {
1302 /* Convert the DTSTART and DTEND properties to an icalperiod. */
1303 this_event_period.start = dtstart;
1304
1305 if (!icaltime_is_null_time(dtend)) {
1306 this_event_period.end = dtend;
1307 }
1308
1309 /* Convert the timestamps to UTC. It's ok to do this because we've already expanded
1310 * recurrences and this data is never going to get used again.
1311 */
1312 this_event_period.start = icaltime_convert_to_zone(
1313 this_event_period.start,
1314 icaltimezone_get_utc_timezone()
1315 );
1316 this_event_period.end = icaltime_convert_to_zone(
1317 this_event_period.end,
1318 icaltimezone_get_utc_timezone()
1319 );
1320
1321 /* Now add it. */
1322 icalcomponent_add_property(fb, icalproperty_new_freebusy(this_event_period));
1323
1324 /* Make sure the DTSTART property of the freebusy *list* is set to
1325 * the DTSTART property of the *earliest event*.
1326 */
1327 p = icalcomponent_get_first_property(fb, ICAL_DTSTART_PROPERTY);
1328 if (p == NULL) {
1329 icalcomponent_set_dtstart(fb, this_event_period.start);
1330 }
1331 else {
1332 if (icaltime_compare(this_event_period.start, icalcomponent_get_dtstart(fb)) < 0) {
1333 icalcomponent_set_dtstart(fb, this_event_period.start);
1334 }
1335 }
1336
1337 /* Make sure the DTEND property of the freebusy *list* is set to
1338 * the DTEND property of the *latest event*.
1339 */
1340 p = icalcomponent_get_first_property(fb, ICAL_DTEND_PROPERTY);
1341 if (p == NULL) {
1342 icalcomponent_set_dtend(fb, this_event_period.end);
1343 }
1344 else {
1345 if (icaltime_compare(this_event_period.end, icalcomponent_get_dtend(fb)) > 0) {
1346 icalcomponent_set_dtend(fb, this_event_period.end);
1347 }
1348 }
1349
1350 if (rrule) {
1351 dtstart = icalrecur_iterator_next(ritr);
1352 if (!icaltime_is_null_time(dtend)) {
1353 dtend = icaltime_add(dtstart, dur);
1354 dtend.zone = dtstart.zone;
1355 }
1356 ++num_recur;
1357 }
1358
1359 } while ( (rrule) && (!icaltime_is_null_time(dtstart)) && (num_recur < MAX_RECUR) ) ;
1360 icalrecur_iterator_free(ritr);
1361}
1362
1363
1364/*
1365 * Backend for ical_freebusy()
1366 *
1367 * This function simply loads the messages in the user's calendar room,
1368 * which contain VEVENTs, then strips them of all non-freebusy data, and
1369 * adds them to the supplied VCALENDAR.
1370 *
1371 */
1372void ical_freebusy_backend(long msgnum, void *data) {
1373 icalcomponent *fb;
1374 struct CtdlMessage *msg = NULL;
1375 struct ical_respond_data ird;
1376
1377 fb = (icalcomponent *)data; /* User-supplied data will be the VFREEBUSY component */
1378
1379 msg = CtdlFetchMessage(msgnum, 1);
1380 if (msg == NULL) return;
1381 memset(&ird, 0, sizeof ird);
1382 strcpy(ird.desired_partnum, "_HUNT_");
1383 mime_parser(CM_RANGE(msg, eMesageText),
1384 *ical_locate_part, /* callback function */
1385 NULL, NULL,
1386 (void *) &ird, /* user data */
1387 0
1388 );
1389 CM_Free(msg);
1390
1391 if (ird.cal) {
1392 ical_add_to_freebusy(fb, ird.cal); /* Add VEVENT times to VFREEBUSY */
1393 icalcomponent_free(ird.cal);
1394 }
1395}
1396
1397
1398/*
1399 * Grab another user's free/busy times
1400 */
1401void ical_freebusy(char *who) {
1402 struct ctdluser usbuf;
1403 char calendar_room_name[ROOMNAMELEN];
1404 char hold_rm[ROOMNAMELEN];
1405 char *serialized_request = NULL;
1406 icalcomponent *encaps = NULL;
1407 icalcomponent *fb = NULL;
1408 int found_user = (-1);
1409 struct recptypes *recp = NULL;
1410 char buf[256];
1411 char host[256];
1412 char type[256];
1413 int i = 0;
1414 int config_lines = 0;
1415
1416 /* First try an exact match. */
1417 found_user = CtdlGetUser(&usbuf, who);
1418
1419 /* If not found, try it as an unqualified email address. */
1420 if (found_user != 0) {
1421 strcpy(buf, who);
1422 recp = validate_recipients(buf, NULL, 0);
1423 syslog(LOG_DEBUG, "calendar: trying <%s>", buf);
1424 if (recp != NULL) {
1425 if (recp->num_local == 1) {
1426 found_user = CtdlGetUser(&usbuf, recp->recp_local);
1427 }
1428 free_recipients(recp);
1429 }
1430 }
1431
1432 /* If still not found, try it as an address qualified with the
1433 * primary FQDN of this Citadel node.
1434 */
1435 if (found_user != 0) {
1436 snprintf(buf, sizeof buf, "%s@%s", who, CtdlGetConfigStr("c_fqdn"));
1437 syslog(LOG_DEBUG, "calendar: trying <%s>", buf);
1438 recp = validate_recipients(buf, NULL, 0);
1439 if (recp != NULL) {
1440 if (recp->num_local == 1) {
1441 found_user = CtdlGetUser(&usbuf, recp->recp_local);
1442 }
1443 free_recipients(recp);
1444 }
1445 }
1446
1447 /* Still not found? Try qualifying it with every domain we
1448 * might have addresses in.
1449 */
1450 if (found_user != 0) {
1451 config_lines = num_tokens(inetcfg, '\n');
1452 for (i=0; ((i < config_lines) && (found_user != 0)); ++i) {
1453 extract_token(buf, inetcfg, i, '\n', sizeof buf);
1454 extract_token(host, buf, 0, '|', sizeof host);
1455 extract_token(type, buf, 1, '|', sizeof type);
1456
1457 if ( (!strcasecmp(type, "localhost"))
1458 || (!strcasecmp(type, "directory")) ) {
1459 snprintf(buf, sizeof buf, "%s@%s", who, host);
1460 syslog(LOG_DEBUG, "calendar: trying <%s>", buf);
1461 recp = validate_recipients(buf, NULL, 0);
1462 if (recp != NULL) {
1463 if (recp->num_local == 1) {
1464 found_user = CtdlGetUser(&usbuf, recp->recp_local);
1465 }
1466 free_recipients(recp);
1467 }
1468 }
1469 }
1470 }
1471
1472 if (found_user != 0) {
1473 cprintf("%d No such user.\n", ERROR + NO_SUCH_USER);
1474 return;
1475 }
1476
1477 CtdlMailboxName(calendar_room_name, sizeof calendar_room_name,
1479
1480 strcpy(hold_rm, CC->room.QRname); /* save current room */
1481
1482 if (CtdlGetRoom(&CC->room, calendar_room_name) != 0) {
1483 cprintf("%d Cannot open calendar\n", ERROR + ROOM_NOT_FOUND);
1484 CtdlGetRoom(&CC->room, hold_rm);
1485 return;
1486 }
1487
1488 /* Create a VFREEBUSY subcomponent */
1489 syslog(LOG_DEBUG, "calendar: creating VFREEBUSY component");
1490 fb = icalcomponent_new_vfreebusy();
1491 if (fb == NULL) {
1492 cprintf("%d Internal error: cannot allocate memory.\n", ERROR + INTERNAL_ERROR);
1493 CtdlGetRoom(&CC->room, hold_rm);
1494 return;
1495 }
1496
1497 /* Set the method to PUBLISH */
1498 icalcomponent_set_method(fb, ICAL_METHOD_PUBLISH);
1499
1500 /* Set the DTSTAMP to right now. */
1501 icalcomponent_set_dtstamp(fb, icaltime_from_timet_with_zone(time(NULL), 0, icaltimezone_get_utc_timezone()));
1502
1503 /* Add the user's email address as ORGANIZER */
1504 sprintf(buf, "MAILTO:%s", who);
1505 if (strchr(buf, '@') == NULL) {
1506 strcat(buf, "@");
1507 strcat(buf, CtdlGetConfigStr("c_fqdn"));
1508 }
1509 for (i=0; buf[i]; ++i) {
1510 if (buf[i]==' ') buf[i] = '_';
1511 }
1512 icalcomponent_add_property(fb, icalproperty_new_organizer(buf));
1513
1514 /* Add busy time from events */
1515 syslog(LOG_DEBUG, "calendar: adding busy time from events");
1516 CtdlForEachMessage(MSGS_ALL, 0, NULL, NULL, NULL, ical_freebusy_backend, (void *)fb );
1517
1518 /* If values for DTSTART and DTEND are still not present, set them
1519 * to yesterday and tomorrow as default values.
1520 */
1521 if (icalcomponent_get_first_property(fb, ICAL_DTSTART_PROPERTY) == NULL) {
1522 icalcomponent_set_dtstart(fb, icaltime_from_timet_with_zone(time(NULL)-86400L, 0, icaltimezone_get_utc_timezone()));
1523 }
1524 if (icalcomponent_get_first_property(fb, ICAL_DTEND_PROPERTY) == NULL) {
1525 icalcomponent_set_dtend(fb, icaltime_from_timet_with_zone(time(NULL)+86400L, 0, icaltimezone_get_utc_timezone()));
1526 }
1527
1528 /* Put the freebusy component into the calendar component */
1529 syslog(LOG_DEBUG, "calendar: encapsulating");
1530 encaps = ical_encapsulate_subcomponent(fb);
1531 if (encaps == NULL) {
1532 icalcomponent_free(fb);
1533 cprintf("%d Internal error: cannot allocate memory.\n",
1535 CtdlGetRoom(&CC->room, hold_rm);
1536 return;
1537 }
1538
1539 /* Set the method to PUBLISH */
1540 syslog(LOG_DEBUG, "calendar: setting method");
1541 icalcomponent_set_method(encaps, ICAL_METHOD_PUBLISH);
1542
1543 /* Serialize it */
1544 syslog(LOG_DEBUG, "calendar: serializing");
1545 serialized_request = icalcomponent_as_ical_string_r(encaps);
1546 icalcomponent_free(encaps); /* Don't need this anymore. */
1547
1548 cprintf("%d Free/busy for %s\n", LISTING_FOLLOWS, usbuf.fullname);
1549 if (serialized_request != NULL) {
1550 client_write(serialized_request, strlen(serialized_request));
1551 free(serialized_request);
1552 }
1553 cprintf("\n000\n");
1554
1555 /* Go back to the room from which we came... */
1556 CtdlGetRoom(&CC->room, hold_rm);
1557}
1558
1559
1560/*
1561 * Backend for ical_getics()
1562 *
1563 * This is a ForEachMessage() callback function that searches the current room
1564 * for calendar events and adds them each into one big calendar component.
1565 */
1566void ical_getics_backend(long msgnum, void *data) {
1567 icalcomponent *encaps, *c;
1568 struct CtdlMessage *msg = NULL;
1569 struct ical_respond_data ird;
1570
1571 encaps = (icalcomponent *)data;
1572 if (encaps == NULL) return;
1573
1574 /* Look for the calendar event... */
1575
1576 msg = CtdlFetchMessage(msgnum, 1);
1577 if (msg == NULL) return;
1578 memset(&ird, 0, sizeof ird);
1579 strcpy(ird.desired_partnum, "_HUNT_");
1580 mime_parser(CM_RANGE(msg, eMesageText),
1581 *ical_locate_part, /* callback function */
1582 NULL, NULL,
1583 (void *) &ird, /* user data */
1584 0
1585 );
1586 CM_Free(msg);
1587
1588 if (ird.cal == NULL) return;
1589
1590 /* Here we go: put the VEVENT into the VCALENDAR. We now no longer
1591 * are responsible for "the_request"'s memory -- it will be freed
1592 * when we free "encaps".
1593 */
1594
1595 /* If the top-level component is *not* a VCALENDAR, we can drop it right
1596 * in. This will almost never happen.
1597 */
1598 if (icalcomponent_isa(ird.cal) != ICAL_VCALENDAR_COMPONENT) {
1599 icalcomponent_add_component(encaps, ird.cal);
1600 }
1601 /*
1602 * In the more likely event that we're looking at a VCALENDAR with the VEVENT
1603 * and other components encapsulated inside, we have to extract them.
1604 */
1605 else {
1606 for (c = icalcomponent_get_first_component(ird.cal, ICAL_ANY_COMPONENT);
1607 (c != NULL);
1608 c = icalcomponent_get_next_component(ird.cal, ICAL_ANY_COMPONENT)) {
1609
1610 /* For VTIMEZONE components, suppress duplicates of the same tzid */
1611
1612 if (icalcomponent_isa(c) == ICAL_VTIMEZONE_COMPONENT) {
1613 icalproperty *p = icalcomponent_get_first_property(c, ICAL_TZID_PROPERTY);
1614 if (p) {
1615 const char *tzid = icalproperty_get_tzid(p);
1616 if (!icalcomponent_get_timezone(encaps, tzid)) {
1617 icalcomponent_add_component(encaps,
1618 icalcomponent_new_clone(c));
1619 }
1620 }
1621 }
1622
1623 /* All other types of components can go in verbatim */
1624 else {
1625 icalcomponent_add_component(encaps, icalcomponent_new_clone(c));
1626 }
1627 }
1628 icalcomponent_free(ird.cal);
1629 }
1630}
1631
1632
1633/*
1634 * Retrieve all of the calendar items in the current room, and output them
1635 * as a single icalendar object.
1636 */
1637void ical_getics(void)
1638{
1639 icalcomponent *encaps = NULL;
1640 char *ser = NULL;
1641
1642 if ( (CC->room.QRdefaultview != VIEW_CALENDAR)
1643 &&(CC->room.QRdefaultview != VIEW_TASKS) ) {
1644 cprintf("%d Not a calendar room\n", ERROR+NOT_HERE);
1645 return; /* Not an iCalendar-centric room */
1646 }
1647
1648 encaps = icalcomponent_new_vcalendar();
1649 if (encaps == NULL) {
1650 syslog(LOG_ERR, "calendar: could not allocate component!");
1651 cprintf("%d Could not allocate memory\n", ERROR+INTERNAL_ERROR);
1652 return;
1653 }
1654
1655 cprintf("%d one big calendar\n", LISTING_FOLLOWS);
1656
1657 /* Set the Product ID */
1658 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
1659
1660 /* Set the Version Number */
1661 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
1662
1663 /* Set the method to PUBLISH */
1664 icalcomponent_set_method(encaps, ICAL_METHOD_PUBLISH);
1665
1666 /* Now go through the room encapsulating all calendar items. */
1668 NULL,
1669 NULL,
1671 (void *) encaps
1672 );
1673
1674 ser = icalcomponent_as_ical_string_r(encaps);
1675 icalcomponent_free(encaps); /* Don't need this anymore. */
1676 client_write(ser, strlen(ser));
1677 free(ser);
1678 cprintf("\n000\n");
1679}
1680
1681
1682/*
1683 * Helper callback function for ical_putics() to discover which TZID's we need.
1684 * Simply put the tzid name string into a hash table. After the callbacks are
1685 * done we'll go through them and attach the ones that we have.
1686 */
1687void ical_putics_grabtzids(icalparameter *param, void *data)
1688{
1689 const char *tzid = icalparameter_get_tzid(param);
1690 HashList *keys = (HashList *) data;
1691
1692 if ( (keys) && (tzid) && (!IsEmptyStr(tzid)) ) {
1693 Put(keys, tzid, strlen(tzid), strdup(tzid), NULL);
1694 }
1695}
1696
1697
1698/*
1699 * Delete all of the calendar items in the current room, and replace them
1700 * with calendar items from a client-supplied data stream.
1701 */
1702void ical_putics(void)
1703{
1704 char *calstream = NULL;
1705 icalcomponent *cal;
1706 icalcomponent *c;
1707 icalcomponent *encaps = NULL;
1708 HashList *tzidlist = NULL;
1709 HashPos *HashPos;
1710 void *Value;
1711 const char *Key;
1712 long len;
1713
1714 /* Only allow this operation if we're in a room containing a calendar or tasks view */
1715 if ( (CC->room.QRdefaultview != VIEW_CALENDAR)
1716 &&(CC->room.QRdefaultview != VIEW_TASKS) ) {
1717 cprintf("%d Not a calendar room\n", ERROR+NOT_HERE);
1718 return;
1719 }
1720
1721 /* Only allow this operation if we have permission to overwrite the existing calendar */
1723 cprintf("%d Permission denied.\n", ERROR+HIGHER_ACCESS_REQUIRED);
1724 return;
1725 }
1726
1727 cprintf("%d Transmit data now\n", SEND_LISTING);
1728 calstream = CtdlReadMessageBody(HKEY("000"), CtdlGetConfigLong("c_maxmsglen"), NULL, 0);
1729 if (calstream == NULL) {
1730 return;
1731 }
1732
1733 cal = icalcomponent_new_from_string(calstream);
1734 free(calstream);
1735
1736 /* We got our data stream -- now do something with it. */
1737
1738 /* Delete the existing messages in the room, because we are overwriting
1739 * the entire calendar with an entire new (or updated) calendar.
1740 * (Careful: this opens an S_ROOMS critical section!)
1741 */
1742 CtdlDeleteMessages(CC->room.QRname, NULL, 0, "");
1743
1744 /* If the top-level component is *not* a VCALENDAR, we can drop it right
1745 * in. This will almost never happen.
1746 */
1747 if (icalcomponent_isa(cal) != ICAL_VCALENDAR_COMPONENT) {
1748 ical_write_to_cal(NULL, cal);
1749 }
1750 /*
1751 * In the more likely event that we're looking at a VCALENDAR with the VEVENT
1752 * and other components encapsulated inside, we have to extract them.
1753 */
1754 else {
1755 for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
1756 (c != NULL);
1757 c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
1758
1759 /* Non-VTIMEZONE components each get written as individual messages.
1760 * But we also need to attach the relevant VTIMEZONE components to them.
1761 */
1762 if ( (icalcomponent_isa(c) != ICAL_VTIMEZONE_COMPONENT)
1763 && (encaps = icalcomponent_new_vcalendar()) ) {
1764 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
1765 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
1766 icalcomponent_set_method(encaps, ICAL_METHOD_PUBLISH);
1767
1768 /* Attach any needed timezones here */
1769 tzidlist = NewHash(1, NULL);
1770 if (tzidlist) {
1771 icalcomponent_foreach_tzid(c, ical_putics_grabtzids, tzidlist);
1772 }
1773 HashPos = GetNewHashPos(tzidlist, 0);
1774
1775 while (GetNextHashPos(tzidlist, HashPos, &len, &Key, &Value)) {
1776 syslog(LOG_DEBUG, "calendar: attaching timezone '%s'", (char*) Value);
1777 icaltimezone *t = NULL;
1778
1779 /* First look for a timezone attached to the original calendar */
1780 t = icalcomponent_get_timezone(cal, Value);
1781
1782 /* Try built-in tzdata if the right one wasn't attached */
1783 if (!t) {
1784 t = icaltimezone_get_builtin_timezone(Value);
1785 }
1786
1787 /* I've got a valid timezone to attach. */
1788 if (t) {
1789 icalcomponent_add_component(encaps,
1790 icalcomponent_new_clone(
1791 icaltimezone_get_component(t)
1792 )
1793 );
1794 }
1795
1796 }
1797 DeleteHashPos(&HashPos);
1798 DeleteHash(&tzidlist);
1799
1800 /* Now attach the component itself (usually a VEVENT or VTODO) */
1801 icalcomponent_add_component(encaps, icalcomponent_new_clone(c));
1802
1803 /* Write it to the message store */
1804 ical_write_to_cal(NULL, encaps);
1805 icalcomponent_free(encaps);
1806 }
1807 }
1808 }
1809
1810 icalcomponent_free(cal);
1811}
1812
1813
1814/*
1815 * All Citadel calendar commands from the client come through here.
1816 */
1817void cmd_ical(char *argbuf)
1818{
1819 char subcmd[64];
1820 long msgnum;
1821 char partnum[256];
1822 char action[256];
1823 char who[256];
1824
1825 extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1826
1827 /* Allow "test" and "freebusy" subcommands without logging in. */
1828
1829 if (!strcasecmp(subcmd, "test")) {
1830 cprintf("%d This server supports calendaring\n", CIT_OK);
1831 return;
1832 }
1833
1834 if (!strcasecmp(subcmd, "freebusy")) {
1835 extract_token(who, argbuf, 1, '|', sizeof who);
1836 ical_freebusy(who);
1837 return;
1838 }
1839
1840 if (!strcasecmp(subcmd, "sgi")) {
1841 CIT_ICAL->server_generated_invitations = (extract_int(argbuf, 1) ? 1 : 0) ;
1842 cprintf("%d %d\n", CIT_OK, CIT_ICAL->server_generated_invitations);
1843 return;
1844 }
1845
1846 if (CtdlAccessCheck(ac_logged_in)) return;
1847
1848 if (!strcasecmp(subcmd, "respond")) {
1849 msgnum = extract_long(argbuf, 1);
1850 extract_token(partnum, argbuf, 2, '|', sizeof partnum);
1851 extract_token(action, argbuf, 3, '|', sizeof action);
1852 ical_respond(msgnum, partnum, action);
1853 return;
1854 }
1855
1856 if (!strcasecmp(subcmd, "handle_rsvp")) {
1857 msgnum = extract_long(argbuf, 1);
1858 extract_token(partnum, argbuf, 2, '|', sizeof partnum);
1859 extract_token(action, argbuf, 3, '|', sizeof action);
1860 ical_handle_rsvp(msgnum, partnum, action);
1861 return;
1862 }
1863
1864 if (!strcasecmp(subcmd, "conflicts")) {
1865 msgnum = extract_long(argbuf, 1);
1866 extract_token(partnum, argbuf, 2, '|', sizeof partnum);
1867 ical_conflicts(msgnum, partnum);
1868 return;
1869 }
1870
1871 if (!strcasecmp(subcmd, "getics")) {
1872 ical_getics();
1873 return;
1874 }
1875
1876 if (!strcasecmp(subcmd, "putics")) {
1877 ical_putics();
1878 return;
1879 }
1880
1881 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1882}
1883
1884
1885/*
1886 * We don't know if the calendar room exists so we just create it at login
1887 */
1889{
1890 struct ctdlroom qr;
1891 visit vbuf;
1892
1893 /* Create the calendar room if it doesn't already exist */
1894 CtdlCreateRoom(USERCALENDARROOM, 4, "", 0, 1, 0, VIEW_CALENDAR);
1895
1896 /* Set expiration policy to manual; otherwise objects will be lost! */
1898 syslog(LOG_ERR, "calendar: couldn't get the user calendar room");
1899 return;
1900 }
1902 qr.QRdefaultview = VIEW_CALENDAR; /* 3 = calendar view */
1903 CtdlPutRoomLock(&qr);
1904
1905 /* Set the view to a calendar view */
1906 CtdlGetRelationship(&vbuf, &CC->user, &qr);
1907 vbuf.v_view = VIEW_CALENDAR;
1908 CtdlSetRelationship(&vbuf, &CC->user, &qr);
1909
1910 /* Create the tasks list room if it doesn't already exist */
1911 CtdlCreateRoom(USERTASKSROOM, 4, "", 0, 1, 0, VIEW_TASKS);
1912
1913 /* Set expiration policy to manual; otherwise objects will be lost! */
1914 if (CtdlGetRoomLock(&qr, USERTASKSROOM)) {
1915 syslog(LOG_ERR, "calendar: couldn't get the user calendar room!");
1916 return;
1917 }
1919 qr.QRdefaultview = VIEW_TASKS;
1920 CtdlPutRoomLock(&qr);
1921
1922 /* Set the view to a task list view */
1923 CtdlGetRelationship(&vbuf, &CC->user, &qr);
1924 vbuf.v_view = VIEW_TASKS;
1925 CtdlSetRelationship(&vbuf, &CC->user, &qr);
1926
1927 /* Create the notes room if it doesn't already exist */
1928 CtdlCreateRoom(USERNOTESROOM, 4, "", 0, 1, 0, VIEW_NOTES);
1929
1930 /* Set expiration policy to manual; otherwise objects will be lost! */
1931 if (CtdlGetRoomLock(&qr, USERNOTESROOM)) {
1932 syslog(LOG_ERR, "calendar: couldn't get the user calendar room!");
1933 return;
1934 }
1936 qr.QRdefaultview = VIEW_NOTES;
1937 CtdlPutRoomLock(&qr);
1938
1939 /* Set the view to a notes view */
1940 CtdlGetRelationship(&vbuf, &CC->user, &qr);
1941 vbuf.v_view = VIEW_NOTES;
1942 CtdlSetRelationship(&vbuf, &CC->user, &qr);
1943
1944 return;
1945}
1946
1947
1948/*
1949 * ical_send_out_invitations() is called by ical_saving_vevent() when it finds a VEVENT.
1950 *
1951 * top_level_cal is the highest available level calendar object.
1952 * cal is the subcomponent containing the VEVENT.
1953 *
1954 * Note: if you change the encapsulation code here, change it in WebCit's ical_encapsulate_subcomponent()
1955 */
1956void ical_send_out_invitations(icalcomponent *top_level_cal, icalcomponent *cal) {
1957 icalcomponent *the_request = NULL;
1958 char *serialized_request = NULL;
1959 icalcomponent *encaps = NULL;
1960 char *request_message_text = NULL;
1961 struct CtdlMessage *msg = NULL;
1962 struct recptypes *valid = NULL;
1963 char attendees_string[SIZ];
1964 int num_attendees = 0;
1965 char this_attendee[256];
1966 icalproperty *attendee = NULL;
1967 char summary_string[SIZ];
1968 icalproperty *summary = NULL;
1969 size_t reqsize;
1970 icalproperty *p;
1971 struct icaltimetype t;
1972 const icaltimezone *attached_zones[5] = { NULL, NULL, NULL, NULL, NULL };
1973 int i;
1974 const icaltimezone *z;
1975 int num_zones_attached = 0;
1976 int zone_already_attached;
1977 icalparameter *tzidp = NULL;
1978 const char *tzidc = NULL;
1979
1980 if (cal == NULL) {
1981 syslog(LOG_ERR, "calendar: trying to reply to NULL event?");
1982 return;
1983 }
1984
1985 /* If this is a VCALENDAR component, look for a VEVENT subcomponent. */
1986 if (icalcomponent_isa(cal) == ICAL_VCALENDAR_COMPONENT) {
1987 ical_send_out_invitations(top_level_cal,
1988 icalcomponent_get_first_component(
1989 cal, ICAL_VEVENT_COMPONENT
1990 )
1991 );
1992 return;
1993 }
1994
1995 /* Clone the event */
1996 the_request = icalcomponent_new_clone(cal);
1997 if (the_request == NULL) {
1998 syslog(LOG_ERR, "calendar: cannot clone calendar object");
1999 return;
2000 }
2001
2002 /* Extract the summary string -- we'll use it as the
2003 * message subject for the request
2004 */
2005 strcpy(summary_string, "Meeting request");
2006 summary = icalcomponent_get_first_property(the_request, ICAL_SUMMARY_PROPERTY);
2007 if (summary != NULL) {
2008 if (icalproperty_get_summary(summary)) {
2009 strcpy(summary_string,
2010 icalproperty_get_summary(summary) );
2011 }
2012 }
2013
2014 /* Determine who the recipients of this message are (the attendees) */
2015 strcpy(attendees_string, "");
2016 for (attendee = icalcomponent_get_first_property(the_request, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(the_request, ICAL_ATTENDEE_PROPERTY)) {
2017 const char *ch = icalproperty_get_attendee(attendee);
2018 if ((ch != NULL) && !strncasecmp(ch, "MAILTO:", 7)) {
2019 safestrncpy(this_attendee, ch + 7, sizeof(this_attendee));
2020
2021 if (!CtdlIsMe(this_attendee, sizeof this_attendee)) { /* don't send an invitation to myself! */
2022 snprintf(&attendees_string[strlen(attendees_string)],
2023 sizeof(attendees_string) - strlen(attendees_string),
2024 "%s, ",
2025 this_attendee
2026 );
2027 ++num_attendees;
2028 }
2029 }
2030 }
2031
2032 syslog(LOG_DEBUG, "calendar: <%d> attendees: <%s>", num_attendees, attendees_string);
2033
2034 /* If there are no attendees, there are no invitations to send, so...
2035 * don't bother putting one together! Punch out, Maverick!
2036 */
2037 if (num_attendees == 0) {
2038 icalcomponent_free(the_request);
2039 return;
2040 }
2041
2042 /* Encapsulate the VEVENT component into a complete VCALENDAR */
2043 encaps = icalcomponent_new_vcalendar();
2044 if (encaps == NULL) {
2045 syslog(LOG_ERR, "calendar: could not allocate component!");
2046 icalcomponent_free(the_request);
2047 return;
2048 }
2049
2050 /* Set the Product ID */
2051 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
2052
2053 /* Set the Version Number */
2054 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
2055
2056 /* Set the method to REQUEST */
2057 icalcomponent_set_method(encaps, ICAL_METHOD_REQUEST);
2058
2059 /* Look for properties containing timezone parameters, to see if we need to attach VTIMEZONEs */
2060 for (p = icalcomponent_get_first_property(the_request, ICAL_ANY_PROPERTY);
2061 p != NULL;
2062 p = icalcomponent_get_next_property(the_request, ICAL_ANY_PROPERTY))
2063 {
2064 if ( (icalproperty_isa(p) == ICAL_COMPLETED_PROPERTY)
2065 || (icalproperty_isa(p) == ICAL_CREATED_PROPERTY)
2066 || (icalproperty_isa(p) == ICAL_DATEMAX_PROPERTY)
2067 || (icalproperty_isa(p) == ICAL_DATEMIN_PROPERTY)
2068 || (icalproperty_isa(p) == ICAL_DTEND_PROPERTY)
2069 || (icalproperty_isa(p) == ICAL_DTSTAMP_PROPERTY)
2070 || (icalproperty_isa(p) == ICAL_DTSTART_PROPERTY)
2071 || (icalproperty_isa(p) == ICAL_DUE_PROPERTY)
2072 || (icalproperty_isa(p) == ICAL_EXDATE_PROPERTY)
2073 || (icalproperty_isa(p) == ICAL_LASTMODIFIED_PROPERTY)
2074 || (icalproperty_isa(p) == ICAL_MAXDATE_PROPERTY)
2075 || (icalproperty_isa(p) == ICAL_MINDATE_PROPERTY)
2076 || (icalproperty_isa(p) == ICAL_RECURRENCEID_PROPERTY)
2077 ) {
2078 t = icalproperty_get_dtstart(p); // it's safe to use dtstart for all of them
2079
2080 /* Determine the tzid in order for some of the conditions below to work */
2081 tzidp = icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER);
2082 if (tzidp) {
2083 tzidc = icalparameter_get_tzid(tzidp);
2084 }
2085 else {
2086 tzidc = NULL;
2087 }
2088
2089 /* First see if there's a timezone attached to the data structure itself */
2090 if (icaltime_is_utc(t)) {
2091 z = icaltimezone_get_utc_timezone();
2092 }
2093 else {
2094 z = icaltime_get_timezone(t);
2095 }
2096
2097 /* If not, try to determine the tzid from the parameter using attached zones */
2098 if ((!z) && (tzidc)) {
2099 z = icalcomponent_get_timezone(top_level_cal, tzidc);
2100 }
2101
2102 /* Still no good? Try our internal database */
2103 if ((!z) && (tzidc)) {
2104 z = icaltimezone_get_builtin_timezone_from_tzid(tzidc);
2105 }
2106
2107 if (z) {
2108 /* We have a valid timezone. Good. Now we need to attach it. */
2109
2110 zone_already_attached = 0;
2111 for (i=0; i<5; ++i) {
2112 if (z == attached_zones[i]) {
2113 /* We've already got this one, no need to attach another. */
2114 ++zone_already_attached;
2115 }
2116 }
2117 if ((!zone_already_attached) && (num_zones_attached < 5)) {
2118 /* This is a new one, so attach it. */
2119 attached_zones[num_zones_attached++] = z;
2120 }
2121
2122 icalproperty_set_parameter(p, icalparameter_new_tzid(icaltimezone_get_tzid(z))
2123 );
2124 }
2125 }
2126 }
2127
2128 /* Encapsulate any timezones we need */
2129 if (num_zones_attached > 0) for (i=0; i<num_zones_attached; ++i) {
2130 icalcomponent *zc;
2131 zc = icalcomponent_new_clone(icaltimezone_get_component(attached_zones[i]));
2132 icalcomponent_add_component(encaps, zc);
2133 }
2134
2135 /* Here we go: encapsulate the VEVENT into the VCALENDAR. We now no longer
2136 * are responsible for "the_request"'s memory -- it will be freed
2137 * when we free "encaps".
2138 */
2139 icalcomponent_add_component(encaps, the_request);
2140
2141 /* Serialize it */
2142 serialized_request = icalcomponent_as_ical_string_r(encaps);
2143 icalcomponent_free(encaps); /* Don't need this anymore. */
2144 if (serialized_request == NULL) return;
2145
2146 reqsize = strlen(serialized_request) + SIZ;
2147 request_message_text = malloc(reqsize);
2148 if (request_message_text != NULL) {
2149 snprintf(request_message_text, reqsize,
2150 "Content-type: text/calendar\r\n\r\n%s\r\n",
2151 serialized_request
2152 );
2153
2154 msg = CtdlMakeMessage(
2155 &CC->user,
2156 NULL, /* No single recipient here */
2157 NULL, /* No single recipient here */
2158 CC->room.QRname,
2159 0,
2160 FMT_RFC822,
2161 NULL,
2162 NULL,
2163 summary_string, /* Use summary for subject */
2164 NULL,
2165 request_message_text,
2166 NULL
2167 );
2168
2169 if (msg != NULL) {
2170 valid = validate_recipients(attendees_string, NULL, 0);
2171 CtdlSubmitMsg(msg, valid, "");
2172 CM_Free(msg);
2173 free_recipients(valid);
2174 }
2175 }
2176 free(serialized_request);
2177}
2178
2179
2180/*
2181 * When a calendar object is being saved, determine whether it's a VEVENT
2182 * and the user saving it is the organizer. If so, send out invitations
2183 * to any listed attendees.
2184 *
2185 * This function is recursive. The caller can simply supply the same object
2186 * as both arguments. When it recurses it will alter the second argument
2187 * while holding on to the top level object. This allows us to go back and
2188 * grab things like time zones which might be attached.
2189 *
2190 */
2191void ical_saving_vevent(icalcomponent *top_level_cal, icalcomponent *cal) {
2192 icalcomponent *c;
2193 icalproperty *organizer = NULL;
2194 char organizer_string[SIZ];
2195
2196 syslog(LOG_DEBUG, "calendar: ical_saving_vevent() has been called");
2197
2198 /* Don't send out invitations unless the client wants us to. */
2199 if (CIT_ICAL->server_generated_invitations == 0) {
2200 return;
2201 }
2202
2203 /* Don't send out invitations if we've been asked not to. */
2204 if (CIT_ICAL->avoid_sending_invitations > 0) {
2205 return;
2206 }
2207
2208 strcpy(organizer_string, "");
2209 /*
2210 * The VEVENT subcomponent is the one we're interested in.
2211 * Send out invitations if, and only if, this user is the Organizer.
2212 */
2213 if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
2214 organizer = icalcomponent_get_first_property(cal, ICAL_ORGANIZER_PROPERTY);
2215 if (organizer != NULL) {
2216 if (icalproperty_get_organizer(organizer)) {
2217 strcpy(organizer_string,
2218 icalproperty_get_organizer(organizer));
2219 }
2220 }
2221 if (!strncasecmp(organizer_string, "MAILTO:", 7)) {
2222 strcpy(organizer_string, &organizer_string[7]);
2223 striplt(organizer_string);
2224 /*
2225 * If the user saving the event is listed as the
2226 * organizer, then send out invitations.
2227 */
2228 if (CtdlIsMe(organizer_string, sizeof organizer_string)) {
2229 ical_send_out_invitations(top_level_cal, cal);
2230 }
2231 }
2232 }
2233
2234 /* If the component has subcomponents, recurse through them. */
2235 for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
2236 (c != NULL);
2237 c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
2238 /* Recursively process subcomponent */
2239 ical_saving_vevent(top_level_cal, c);
2240 }
2241
2242}
2243
2244
2245/*
2246 * Back end for ical_obj_beforesave()
2247 * This hunts for the UID of the calendar event (becomes Citadel msg EUID),
2248 * the summary of the event (becomes message subject),
2249 * and the start time (becomes message date/time).
2250 */
2251void ical_obj_beforesave_backend(char *name, char *filename, char *partnum,
2252 char *disp, void *content, char *cbtype, char *cbcharset, size_t length,
2253 char *encoding, char *cbid, void *cbuserdata)
2254{
2255 const char* pch;
2256 icalcomponent *cal, *nested_event, *nested_todo, *whole_cal;
2257 icalproperty *p;
2258 char new_uid[256] = "";
2259 struct CtdlMessage *msg = (struct CtdlMessage *) cbuserdata;
2260
2261 if (!msg) return;
2262
2263 /* We're only interested in calendar data. */
2264 if ( (strcasecmp(cbtype, "text/calendar"))
2265 && (strcasecmp(cbtype, "application/ics")) ) {
2266 return;
2267 }
2268
2269 /* Hunt for the UID and drop it in
2270 * the "user data" pointer for the MIME parser. When
2271 * ical_obj_beforesave() sees it there, it'll set the Exclusive msgid
2272 * to that string.
2273 */
2274 whole_cal = icalcomponent_new_from_string(content);
2275 cal = whole_cal;
2276 if (cal != NULL) {
2277 if (icalcomponent_isa(cal) == ICAL_VCALENDAR_COMPONENT) {
2278 nested_event = icalcomponent_get_first_component(
2279 cal, ICAL_VEVENT_COMPONENT);
2280 if (nested_event != NULL) {
2281 cal = nested_event;
2282 }
2283 else {
2284 nested_todo = icalcomponent_get_first_component(
2285 cal, ICAL_VTODO_COMPONENT);
2286 if (nested_todo != NULL) {
2287 cal = nested_todo;
2288 }
2289 }
2290 }
2291
2292 if (cal != NULL) {
2293
2294 /* Set the message EUID to the iCalendar UID */
2295
2296 p = ical_ctdl_get_subprop(cal, ICAL_UID_PROPERTY);
2297 if (p == NULL) {
2298 /* If there's no uid we must generate one */
2299 generate_uuid(new_uid);
2300 icalcomponent_add_property(cal, icalproperty_new_uid(new_uid));
2301 p = ical_ctdl_get_subprop(cal, ICAL_UID_PROPERTY);
2302 }
2303 if (p != NULL) {
2304 pch = icalproperty_get_comment(p);
2305 if (!IsEmptyStr(pch)) {
2306 CM_SetField(msg, eExclusiveID, pch, strlen(pch));
2307 syslog(LOG_DEBUG, "calendar: saving calendar UID <%s>", pch);
2308 }
2309 }
2310
2311 /* Set the message subject to the iCalendar summary */
2312
2313 p = ical_ctdl_get_subprop(cal, ICAL_SUMMARY_PROPERTY);
2314 if (p != NULL) {
2315 pch = icalproperty_get_comment(p);
2316 if (!IsEmptyStr(pch)) {
2317 char *subj;
2318
2319 subj = rfc2047encode(pch, strlen(pch));
2320 CM_SetAsField(msg, eMsgSubject, &subj, strlen(subj));
2321 }
2322 }
2323
2324 /* Set the message date/time to the iCalendar start time */
2325
2326 p = ical_ctdl_get_subprop(cal, ICAL_DTSTART_PROPERTY);
2327 if (p != NULL) {
2328 time_t idtstart;
2329 idtstart = icaltime_as_timet(icalproperty_get_dtstart(p));
2330 if (idtstart > 0) {
2331 CM_SetFieldLONG(msg, eTimestamp, idtstart);
2332 }
2333 }
2334
2335 }
2336 icalcomponent_free(cal);
2337 if (whole_cal != cal) {
2338 icalcomponent_free(whole_cal);
2339 }
2340 }
2341}
2342
2343
2344/*
2345 * See if we need to prevent the object from being saved (we don't allow
2346 * MIME types other than text/calendar in "calendar" or "tasks" rooms).
2347 *
2348 * If the message is being saved, we also set various message header fields
2349 * using data found in the iCalendar object.
2350 */
2351int ical_obj_beforesave(struct CtdlMessage *msg, struct recptypes *recp)
2352{
2353 /* First determine if this is a calendar or tasks room */
2354 if ( (CC->room.QRdefaultview != VIEW_CALENDAR)
2355 && (CC->room.QRdefaultview != VIEW_TASKS)
2356 ) {
2357 return(0); /* Not an iCalendar-centric room */
2358 }
2359
2360 /* It must be an RFC822 message! */
2361 if (msg->cm_format_type != 4) {
2362 syslog(LOG_DEBUG, "calendar: rejecting non-RFC822 message");
2363 return(1); /* You tried to save a non-RFC822 message! */
2364 }
2365
2366 if (CM_IsEmpty(msg, eMesageText)) {
2367 return(1); /* You tried to save a null message! */
2368 }
2369
2370 /* Do all of our lovely back-end parsing */
2371 mime_parser(CM_RANGE(msg, eMesageText),
2373 NULL, NULL,
2374 (void *)msg,
2375 0
2376 );
2377
2378 return(0);
2379}
2380
2381
2382/*
2383 * Things we need to do after saving a calendar event.
2384 */
2385void ical_obj_aftersave_backend(char *name, char *filename, char *partnum,
2386 char *disp, void *content, char *cbtype, char *cbcharset, size_t length,
2387 char *encoding, char *cbid, void *cbuserdata)
2388{
2389 icalcomponent *cal;
2390
2391 /* We're only interested in calendar items here. */
2392 if ( (strcasecmp(cbtype, "text/calendar"))
2393 && (strcasecmp(cbtype, "application/ics")) ) {
2394 return;
2395 }
2396
2397 /* Hunt for the UID and drop it in
2398 * the "user data" pointer for the MIME parser. When
2399 * ical_obj_beforesave() sees it there, it'll set the Exclusive msgid
2400 * to that string.
2401 */
2402 if ( (!strcasecmp(cbtype, "text/calendar"))
2403 || (!strcasecmp(cbtype, "application/ics")) ) {
2404 cal = icalcomponent_new_from_string(content);
2405 if (cal != NULL) {
2406 ical_saving_vevent(cal, cal);
2407 icalcomponent_free(cal);
2408 }
2409 }
2410}
2411
2412
2413/*
2414 * Things we need to do after saving a calendar event.
2415 * (This will start back end tasks such as automatic generation of invitations,
2416 * if such actions are appropriate.)
2417 */
2418int ical_obj_aftersave(struct CtdlMessage *msg, struct recptypes *recp)
2419{
2420 char roomname[ROOMNAMELEN];
2421
2422 /*
2423 * If this isn't the Calendar> room, no further action is necessary.
2424 */
2425
2426 /* First determine if this is our room */
2427 CtdlMailboxName(roomname, sizeof roomname, &CC->user, USERCALENDARROOM);
2428 if (strcasecmp(roomname, CC->room.QRname)) {
2429 return(0); /* Not the Calendar room -- don't do anything. */
2430 }
2431
2432 /* It must be an RFC822 message! */
2433 if (msg->cm_format_type != 4) return(1);
2434
2435 /* Reject null messages */
2436 if (CM_IsEmpty(msg, eMesageText)) return(1);
2437
2438 /* Now recurse through it looking for our icalendar data */
2439 mime_parser(CM_RANGE(msg, eMesageText),
2441 NULL, NULL,
2442 NULL,
2443 0
2444 );
2445
2446 return(0);
2447}
2448
2449
2451 CIT_ICAL = malloc(sizeof(struct cit_ical));
2452 memset(CIT_ICAL, 0, sizeof(struct cit_ical));
2453}
2454
2455
2457 free(CIT_ICAL);
2458}
2459
2460
2461/*
2462 * Back end for ical_fixed_output()
2463 */
2464void ical_fixed_output_backend(icalcomponent *cal, int recursion_level) {
2465 icalcomponent *c;
2466 icalproperty *p;
2467 char buf[256];
2468 const char *ch;
2469
2470 p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
2471 if (p != NULL) {
2472 cprintf("%s\n", (const char *)icalproperty_get_comment(p));
2473 }
2474
2475 p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
2476 if (p != NULL) {
2477 cprintf("%s\n", (const char *)icalproperty_get_comment(p));
2478 }
2479
2480 p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
2481 if (p != NULL) {
2482 cprintf("%s\n", (const char *)icalproperty_get_comment(p));
2483 }
2484
2485 /* If the component has attendees, iterate through them. */
2486 for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY); (p != NULL); p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
2487 ch = icalproperty_get_attendee(p);
2488 if ((ch != NULL) &&
2489 !strncasecmp(ch, "MAILTO:", 7)) {
2490
2491 /* screen name or email address */
2492 safestrncpy(buf, ch + 7, sizeof(buf));
2493 striplt(buf);
2494 cprintf("%s ", buf);
2495 }
2496 cprintf("\n");
2497 }
2498
2499 /* If the component has subcomponents, recurse through them. */
2500 for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
2501 (c != 0);
2502 c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
2503 /* Recursively process subcomponent */
2504 ical_fixed_output_backend(c, recursion_level+1);
2505 }
2506}
2507
2508
2509/*
2510 * Function to output iCalendar data as plain text. Nobody uses MSG0
2511 * anymore, so really this is just so we expose the vCard data to the full
2512 * text indexer.
2513 */
2514void ical_fixed_output(char *ptr, int len) {
2515 icalcomponent *cal;
2516 char *stringy_cal;
2517
2518 stringy_cal = malloc(len + 1);
2519 safestrncpy(stringy_cal, ptr, len + 1);
2520 cal = icalcomponent_new_from_string(stringy_cal);
2521 free(stringy_cal);
2522
2523 if (cal == NULL) {
2524 return;
2525 }
2526
2528
2529 /* Free the memory we obtained from libical's constructor */
2530 icalcomponent_free(cal);
2531}
2532
2533
2534/*
2535 * Register this module with the Citadel server.
2536 */
2538{
2539 if (!threading)
2540 {
2541
2542 /* Tell libical to return errors instead of aborting if it gets bad data */
2543
2544#ifdef LIBICAL_ICAL_EXPORT // cheap and sleazy way to detect libical >=2.0
2545 icalerror_set_errors_are_fatal(0);
2546#else
2547 icalerror_errors_are_fatal = 0;
2548#endif
2549
2550 /* Use our own application prefix in tzid's generated from system tzdata */
2551 icaltimezone_set_tzid_prefix("/citadel.org/");
2552
2553 /* Initialize our hook functions */
2557 CtdlRegisterProtoHook(cmd_ical, "ICAL", "Citadel iCalendar commands");
2562 }
2563
2564 /* return our module name for the log */
2565 return "calendar";
2566}
#define ROOMNAMELEN
Definition: citadel.h:56
#define MES_NORMAL
Definition: citadel.h:135
#define EXPIRE_MANUAL
Definition: citadel.h:70
char * CtdlGetConfigStr(char *key)
Definition: config.c:384
long CtdlGetConfigLong(char *key)
Definition: config.c:428
#define CC
Definition: context.h:140
int CtdlAccessCheck(int)
Definition: user_ops.c:387
void CtdlGetRelationship(visit *vbuf, struct ctdluser *rel_user, struct ctdlroom *rel_room)
Definition: user_ops.c:319
void CtdlMailboxName(char *buf, size_t n, const struct ctdluser *who, const char *prefix)
Definition: user_ops.c:349
#define PRIO_START
Definition: ctdl_module.h:85
int CtdlGetRoom(struct ctdlroom *qrbuf, const char *room_name)
Definition: room_ops.c:342
long CtdlLocateMessageByEuid(char *euid, struct ctdlroom *qrbuf)
Definition: euidindex.c:67
void CtdlRegisterSessionHook(void(*fcn_ptr)(void), int EventType, int Priority)
void CtdlRegisterFixedOutputHook(char *content_type, void(*output_function)(char *supplied_data, int len))
void CtdlRegisterMessageHook(int(*handler)(struct CtdlMessage *, struct recptypes *), int EventType)
int CtdlGetRoomLock(struct ctdlroom *qrbuf, const char *room_name)
Definition: room_ops.c:387
#define PRIO_LOGIN
Definition: ctdl_module.h:83
void CtdlSetRelationship(visit *newvisit, struct ctdluser *rel_user, struct ctdlroom *rel_room)
Definition: user_ops.c:304
@ ac_logged_in
Definition: ctdl_module.h:244
unsigned CtdlCreateRoom(char *new_room_name, int new_room_type, char *new_room_pass, int new_room_floor, int really_create, int avoid_access, int new_room_view)
Definition: room_ops.c:1136
int CtdlGetUser(struct ctdluser *usbuf, char *name)
Definition: user_ops.c:75
void CtdlPutRoomLock(struct ctdlroom *qrbuf)
Definition: room_ops.c:444
void CtdlRegisterProtoHook(void(*handler)(char *), char *cmd, char *desc)
#define PRIO_STOP
Definition: ctdl_module.h:87
#define CTDL_MODULE_INIT(module_name)
Definition: ctdl_module.h:50
icaltimezone * get_default_icaltimezone(void)
int CtdlIsMe(char *addr, int addr_buf_len)
struct recptypes * validate_recipients(char *supplied_recipients, const char *RemoteIdentifier, int Flags)
char * inetcfg
void free_recipients(struct recptypes *valid)
#define CIT_OK
Definition: ipcdef.h:6
#define ILLEGAL_VALUE
Definition: ipcdef.h:16
#define INTERNAL_ERROR
Definition: ipcdef.h:14
#define LISTING_FOLLOWS
Definition: ipcdef.h:5
#define HIGHER_ACCESS_REQUIRED
Definition: ipcdef.h:23
#define ROOM_NOT_FOUND
Definition: ipcdef.h:31
#define CMD_NOT_SUPPORTED
Definition: ipcdef.h:18
#define FILE_NOT_FOUND
Definition: ipcdef.h:30
#define ERROR
Definition: ipcdef.h:9
#define SEND_LISTING
Definition: ipcdef.h:8
#define NO_SUCH_USER
Definition: ipcdef.h:29
#define NOT_HERE
Definition: ipcdef.h:27
void CM_Free(struct CtdlMessage *msg)
Definition: msgbase.c:310
struct CtdlMessage * CtdlMakeMessage(struct ctdluser *author, char *recipient, char *recp_cc, char *room, int type, int format_type, char *fake_name, char *my_email, char *subject, char *supplied_euid, char *preformatted_text, char *references)
Definition: msgbase.c:3060
int CtdlForEachMessage(int mode, long ref, char *search_string, char *content_type, struct CtdlMessage *compare, ForEachMsgCallback CallBack, void *userdata)
Definition: msgbase.c:626
struct CtdlMessage * CtdlFetchMessage(long msgnum, int with_body)
Definition: msgbase.c:1135
long CtdlWriteObject(char *req_room, char *content_type, char *raw_message, off_t raw_length, struct ctdluser *is_mailbox, int is_binary, unsigned int flags)
Definition: msgbase.c:3482
int CM_IsEmpty(struct CtdlMessage *Msg, eMsgField which)
Definition: msgbase.c:137
int CtdlDeleteMessages(const char *room_name, long *dmsgnums, int num_dmsgnums, char *content_type)
Definition: msgbase.c:3240
long CtdlSubmitMsg(struct CtdlMessage *msg, struct recptypes *recps, const char *force)
Definition: msgbase.c:2603
void CM_SetField(struct CtdlMessage *Msg, eMsgField which, const char *buf, long length)
Definition: msgbase.c:142
char * CtdlReadMessageBody(char *terminator, long tlen, size_t maxlen, StrBuf *exist, int crlf)
Definition: msgbase.c:3037
void CM_SetAsField(struct CtdlMessage *Msg, eMsgField which, char **buf, long length)
Definition: msgbase.c:242
void CM_SetFieldLONG(struct CtdlMessage *Msg, eMsgField which, long lvalue)
Definition: msgbase.c:156
void CM_SetAsFieldSB(struct CtdlMessage *Msg, eMsgField which, StrBuf **buf)
Definition: msgbase.c:258
#define CM_RANGE(Message, Which)
Definition: msgbase.h:127
@ MSGS_ALL
Definition: msgbase.h:6
void * malloc(size_t)
void free(void *)
int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void)
Definition: room_ops.c:109
void ical_send_out_invitations(icalcomponent *top_level_cal, icalcomponent *cal)
void ical_fixed_output(char *ptr, int len)
void ical_freebusy(char *who)
void ical_conflicts_phase5(struct icaltimetype t1start, struct icaltimetype t1end, icalcomponent *existing_event, long existing_msgnum, char *compare_uid)
void cmd_ical(char *argbuf)
void ical_getics(void)
void ical_merge_attendee_reply(icalcomponent *event, icalcomponent *reply)
int ical_obj_aftersave(struct CtdlMessage *msg, struct recptypes *recp)
void ical_getics_backend(long msgnum, void *data)
void ical_putics_grabtzids(icalparameter *param, void *data)
void ical_conflicts_phase4(icalcomponent *proposed_event, icalcomponent *existing_event, long existing_msgnum)
int ical_obj_beforesave(struct CtdlMessage *msg, struct recptypes *recp)
void ical_learn_uid_of_reply(char *uidbuf, icalcomponent *cal)
void ical_send_a_reply(icalcomponent *request, char *action)
int ical_conflicts_phase6(struct icaltimetype t1start, struct icaltimetype t1end, struct icaltimetype t2start, struct icaltimetype t2end, long existing_msgnum, char *conflict_event_uid, char *conflict_event_summary, char *compare_uid)
icalcomponent * ical_encapsulate_subcomponent(icalcomponent *subcomp)
Definition: serv_calendar.c:61
#define PRODID
Definition: serv_calendar.c:17
void ical_putics(void)
void ical_freebusy_backend(long msgnum, void *data)
void ical_obj_aftersave_backend(char *name, char *filename, char *partnum, char *disp, void *content, char *cbtype, char *cbcharset, size_t length, char *encoding, char *cbid, void *cbuserdata)
void ical_locate_original_event(char *name, char *filename, char *partnum, char *disp, void *content, char *cbtype, char *cbcharset, size_t length, char *encoding, char *cbid, void *cbuserdata)
int ical_update_my_calendar_with_reply(icalcomponent *cal)
icalcomponent * icalcomponent_new_citadel_vcalendar(void)
Definition: serv_calendar.c:39
void ical_locate_part(char *name, char *filename, char *partnum, char *disp, void *content, char *cbtype, char *cbcharset, size_t length, char *encoding, char *cbid, void *cbuserdata)
int ical_ctdl_is_overlap(struct icaltimetype t1start, struct icaltimetype t1end, struct icaltimetype t2start, struct icaltimetype t2end)
void ical_write_to_cal(struct ctdluser *u, icalcomponent *cal)
Definition: serv_calendar.c:88
void ical_respond(long msgnum, char *partnum, char *action)
void ical_saving_vevent(icalcomponent *top_level_cal, icalcomponent *cal)
void ical_CtdlCreateRoom(void)
void ical_add_to_freebusy(icalcomponent *fb, icalcomponent *top_level_cal)
void ical_conflicts(long msgnum, char *partnum)
void ical_obj_beforesave_backend(char *name, char *filename, char *partnum, char *disp, void *content, char *cbtype, char *cbcharset, size_t length, char *encoding, char *cbid, void *cbuserdata)
icalproperty * ical_ctdl_get_subprop(icalcomponent *cal, icalproperty_kind which_prop)
void ical_hunt_for_event_to_update(long msgnum, void *data)
void ical_fixed_output_backend(icalcomponent *cal, int recursion_level)
void ical_hunt_for_conflicts_backend(long msgnum, void *data)
void ical_session_shutdown(void)
void ical_hunt_for_conflicts(icalcomponent *cal)
void ical_session_startup(void)
void ical_handle_rsvp(long msgnum, char *partnum, char *action)
#define MAX_RECUR
Definition: serv_calendar.h:37
#define CIT_ICAL
Definition: serv_calendar.h:36
visit vbuf
Definition: serv_migrate.c:503
struct ctdluser usbuf
Definition: serv_migrate.c:496
#define EVT_STOP
Definition: server.h:212
#define CTDLMESSAGE_MAGIC
Definition: server.h:42
@ eExclusiveID
Definition: server.h:309
@ eMesageText
Definition: server.h:315
@ eAuthor
Definition: server.h:307
@ eTimestamp
Definition: server.h:319
@ eMsgSubject
Definition: server.h:320
@ eOriginalRoom
Definition: server.h:316
#define EVT_AFTERSAVE
Definition: server.h:232
#define FMT_RFC822
Definition: server.h:178
#define EVT_LOGIN
Definition: server.h:214
#define EVT_START
Definition: server.h:213
#define EVT_BEFORESAVE
Definition: server.h:231
int snprintf(char *buf, size_t max, const char *fmt,...)
Definition: snprintf.c:69
struct ctdluser user
Definition: context.h:109
struct ctdlroom room
Definition: context.h:110
int cm_magic
Definition: server.h:34
char cm_anon_type
Definition: server.h:35
char cm_format_type
Definition: server.h:36
int expire_mode
Definition: citadel.h:65
int v_view
Definition: server.h:253
char QRname[128]
Definition: citadel.h:108
struct ExpirePolicy QRep
Definition: citadel.h:118
int QRdefaultview
Definition: citadel.h:122
char fullname[64]
Definition: citadel.h:90
icalcomponent * cal
Definition: serv_calendar.c:31
char desired_partnum[4096]
Definition: serv_calendar.c:30
char * recp_local
Definition: server.h:55
int num_local
Definition: server.h:49
#define SIZ
Definition: sysconfig.h:33
#define USERTASKSROOM
Definition: sysconfig.h:66
#define USERCALENDARROOM
Definition: sysconfig.h:65
#define USERNOTESROOM
Definition: sysconfig.h:68
void cprintf(const char *format,...)
Definition: sysdep.c:381
int client_write(const char *buf, int nbytes)
Definition: sysdep.c:307