4 * This module implements iCalendar object processing and the Calendar>
5 * room on a Citadel server. It handles iCalendar objects using the
6 * iTIP protocol. See RFCs 2445 and 2446.
10 #define PRODID "-//Citadel//NONSGML Citadel Calendar//EN"
15 #include <sys/types.h>
24 #include "citserver.h"
25 #include "sysdep_decls.h"
28 #include "serv_extensions.h"
33 #include "mime_parser.h"
34 #include "internet_addressing.h"
35 #include "serv_calendar.h"
36 #include "euidindex.h"
38 #ifdef CITADEL_WITH_CALENDAR_SERVICE
41 #include "ical_dezonify.h"
43 struct ical_respond_data {
44 char desired_partnum[SIZ];
50 * Utility function to create a new VCALENDAR component with some of the
51 * required fields already set the way we like them.
53 icalcomponent *icalcomponent_new_citadel_vcalendar(void) {
54 icalcomponent *encaps;
56 encaps = icalcomponent_new_vcalendar();
58 lprintf(CTDL_CRIT, "Error at %s:%d - could not allocate component!\n",
63 /* Set the Product ID */
64 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
66 /* Set the Version Number */
67 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
74 * Utility function to encapsulate a subcomponent into a full VCALENDAR
76 icalcomponent *ical_encapsulate_subcomponent(icalcomponent *subcomp) {
77 icalcomponent *encaps;
79 /* If we're already looking at a full VCALENDAR component,
80 * don't bother ... just return itself.
82 if (icalcomponent_isa(subcomp) == ICAL_VCALENDAR_COMPONENT) {
86 /* Encapsulate the VEVENT component into a complete VCALENDAR */
87 encaps = icalcomponent_new_citadel_vcalendar();
88 if (encaps == NULL) return NULL;
90 /* Encapsulate the subcomponent inside */
91 icalcomponent_add_component(encaps, subcomp);
93 /* Convert all timestamps to UTC so we don't have to deal with
94 * stupid VTIMEZONE crap.
96 ical_dezonify(encaps);
98 /* Return the object we just created. */
106 * Write a calendar object into the specified user's calendar room.
108 void ical_write_to_cal(struct ctdluser *u, icalcomponent *cal) {
112 icalcomponent *encaps;
114 if (cal == NULL) return;
116 /* If the supplied object is a subcomponent, encapsulate it in
117 * a full VCALENDAR component, and save that instead.
119 if (icalcomponent_isa(cal) != ICAL_VCALENDAR_COMPONENT) {
120 encaps = ical_encapsulate_subcomponent(
121 icalcomponent_new_clone(cal)
123 ical_write_to_cal(u, encaps);
124 icalcomponent_free(encaps);
128 CtdlMakeTempFileName(temp, sizeof temp);
129 ser = icalcomponent_as_ical_string(cal);
130 if (ser == NULL) return;
132 /* Make a temp file out of it */
133 fp = fopen(temp, "w");
134 if (fp == NULL) return;
135 fwrite(ser, strlen(ser), 1, fp);
138 /* This handy API function does all the work for us.
140 CtdlWriteObject(USERCALENDARROOM, /* which room */
141 "text/calendar", /* MIME type */
142 temp, /* temp file */
145 0, /* don't delete others of this type */
153 * Add a calendar object to the user's calendar
155 * ok because it uses ical_write_to_cal()
157 void ical_add(icalcomponent *cal, int recursion_level) {
161 * The VEVENT subcomponent is the one we're interested in saving.
163 if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
165 ical_write_to_cal(&CC->user, cal);
169 /* If the component has subcomponents, recurse through them. */
170 for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
172 c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
173 /* Recursively process subcomponent */
174 ical_add(c, recursion_level+1);
182 * Send a reply to a meeting invitation.
184 * 'request' is the invitation to reply to.
185 * 'action' is the string "accept" or "decline".
187 * (Sorry about this being more than 80 columns ... there was just
188 * no easy way to break it down sensibly.)
192 void ical_send_a_reply(icalcomponent *request, char *action) {
193 icalcomponent *the_reply = NULL;
194 icalcomponent *vevent = NULL;
195 icalproperty *attendee = NULL;
196 char attendee_string[SIZ];
197 icalproperty *organizer = NULL;
198 char organizer_string[SIZ];
199 icalproperty *summary = NULL;
200 char summary_string[SIZ];
201 icalproperty *me_attend = NULL;
202 struct recptypes *recp = NULL;
203 icalparameter *partstat = NULL;
204 char *serialized_reply = NULL;
205 char *reply_message_text = NULL;
206 struct CtdlMessage *msg = NULL;
207 struct recptypes *valid = NULL;
209 strcpy(organizer_string, "");
210 strcpy(summary_string, "Calendar item");
212 if (request == NULL) {
213 lprintf(CTDL_ERR, "ERROR: trying to reply to NULL event?\n");
217 the_reply = icalcomponent_new_clone(request);
218 if (the_reply == NULL) {
219 lprintf(CTDL_ERR, "ERROR: cannot clone request\n");
223 /* Change the method from REQUEST to REPLY */
224 icalcomponent_set_method(the_reply, ICAL_METHOD_REPLY);
226 vevent = icalcomponent_get_first_component(the_reply, ICAL_VEVENT_COMPONENT);
227 if (vevent != NULL) {
228 /* Hunt for attendees, removing ones that aren't us.
229 * (Actually, remove them all, cloning our own one so we can
230 * re-insert it later)
232 while (attendee = icalcomponent_get_first_property(vevent,
233 ICAL_ATTENDEE_PROPERTY), (attendee != NULL)
235 if (icalproperty_get_attendee(attendee)) {
236 strcpy(attendee_string,
237 icalproperty_get_attendee(attendee) );
238 if (!strncasecmp(attendee_string, "MAILTO:", 7)) {
239 strcpy(attendee_string, &attendee_string[7]);
240 striplt(attendee_string);
241 recp = validate_recipients(attendee_string);
243 if (!strcasecmp(recp->recp_local, CC->user.fullname)) {
244 if (me_attend) icalproperty_free(me_attend);
245 me_attend = icalproperty_new_clone(attendee);
252 icalcomponent_remove_property(vevent, attendee);
253 icalproperty_free(attendee);
256 /* We found our own address in the attendee list. */
258 /* Change the partstat from NEEDS-ACTION to ACCEPT or DECLINE */
259 icalproperty_remove_parameter(me_attend, ICAL_PARTSTAT_PARAMETER);
261 if (!strcasecmp(action, "accept")) {
262 partstat = icalparameter_new_partstat(ICAL_PARTSTAT_ACCEPTED);
264 else if (!strcasecmp(action, "decline")) {
265 partstat = icalparameter_new_partstat(ICAL_PARTSTAT_DECLINED);
267 else if (!strcasecmp(action, "tentative")) {
268 partstat = icalparameter_new_partstat(ICAL_PARTSTAT_TENTATIVE);
271 if (partstat) icalproperty_add_parameter(me_attend, partstat);
273 /* Now insert it back into the vevent. */
274 icalcomponent_add_property(vevent, me_attend);
277 /* Figure out who to send this thing to */
278 organizer = icalcomponent_get_first_property(vevent, ICAL_ORGANIZER_PROPERTY);
279 if (organizer != NULL) {
280 if (icalproperty_get_organizer(organizer)) {
281 strcpy(organizer_string,
282 icalproperty_get_organizer(organizer) );
285 if (!strncasecmp(organizer_string, "MAILTO:", 7)) {
286 strcpy(organizer_string, &organizer_string[7]);
287 striplt(organizer_string);
289 strcpy(organizer_string, "");
292 /* Extract the summary string -- we'll use it as the
293 * message subject for the reply
295 summary = icalcomponent_get_first_property(vevent, ICAL_SUMMARY_PROPERTY);
296 if (summary != NULL) {
297 if (icalproperty_get_summary(summary)) {
298 strcpy(summary_string,
299 icalproperty_get_summary(summary) );
305 /* Now generate the reply message and send it out. */
306 serialized_reply = strdup(icalcomponent_as_ical_string(the_reply));
307 icalcomponent_free(the_reply); /* don't need this anymore */
308 if (serialized_reply == NULL) return;
310 reply_message_text = malloc(strlen(serialized_reply) + SIZ);
311 if (reply_message_text != NULL) {
312 sprintf(reply_message_text,
313 "Content-type: text/calendar\r\n\r\n%s\r\n",
317 msg = CtdlMakeMessage(&CC->user,
318 organizer_string, /* to */
320 CC->room.QRname, 0, FMT_RFC822,
322 summary_string, /* Use summary for subject */
327 valid = validate_recipients(organizer_string);
328 CtdlSubmitMsg(msg, valid, "");
329 CtdlFreeMessage(msg);
332 free(serialized_reply);
338 * Callback function for mime parser that hunts for calendar content types
339 * and turns them into calendar objects
341 void ical_locate_part(char *name, char *filename, char *partnum, char *disp,
342 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
345 struct ical_respond_data *ird = NULL;
347 ird = (struct ical_respond_data *) cbuserdata;
349 /* desired_partnum can be set to "_HUNT_" to have it just look for
350 * the first part with a content type of text/calendar. Otherwise
351 * we have to only process the right one.
353 if (strcasecmp(ird->desired_partnum, "_HUNT_")) {
354 if (strcasecmp(partnum, ird->desired_partnum)) {
359 if (strcasecmp(cbtype, "text/calendar")) {
363 if (ird->cal != NULL) {
364 icalcomponent_free(ird->cal);
368 ird->cal = icalcomponent_new_from_string(content);
369 if (ird->cal != NULL) {
370 ical_dezonify(ird->cal);
376 * Respond to a meeting request.
378 void ical_respond(long msgnum, char *partnum, char *action) {
379 struct CtdlMessage *msg;
380 struct ical_respond_data ird;
383 (strcasecmp(action, "accept"))
384 && (strcasecmp(action, "decline"))
386 cprintf("%d Action must be 'accept' or 'decline'\n",
387 ERROR + ILLEGAL_VALUE
392 msg = CtdlFetchMessage(msgnum, 1);
394 cprintf("%d Message %ld not found.\n",
395 ERROR + ILLEGAL_VALUE,
401 memset(&ird, 0, sizeof ird);
402 strcpy(ird.desired_partnum, partnum);
403 mime_parser(msg->cm_fields['M'],
405 *ical_locate_part, /* callback function */
407 (void *) &ird, /* user data */
411 /* We're done with the incoming message, because we now have a
412 * calendar object in memory.
414 CtdlFreeMessage(msg);
417 * Here is the real meat of this function. Handle the event.
419 if (ird.cal != NULL) {
420 /* Save this in the user's calendar if necessary */
421 if (!strcasecmp(action, "accept")) {
422 ical_add(ird.cal, 0);
425 /* Send a reply if necessary */
426 if (icalcomponent_get_method(ird.cal) == ICAL_METHOD_REQUEST) {
427 ical_send_a_reply(ird.cal, action);
430 /* Now that we've processed this message, we don't need it
431 * anymore. So delete it.
433 CtdlDeleteMessages(CC->room.QRname, msgnum, "", 1);
435 /* Free the memory we allocated and return a response. */
436 icalcomponent_free(ird.cal);
438 cprintf("%d ok\n", CIT_OK);
442 cprintf("%d No calendar object found\n", ERROR + ROOM_NOT_FOUND);
446 /* should never get here */
451 * Figure out the UID of the calendar event being referred to in a
452 * REPLY object. This function is recursive.
454 void ical_learn_uid_of_reply(char *uidbuf, icalcomponent *cal) {
455 icalcomponent *subcomponent;
458 /* If this object is a REPLY, then extract the UID. */
459 if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
460 p = icalcomponent_get_first_property(cal, ICAL_UID_PROPERTY);
462 strcpy(uidbuf, icalproperty_get_comment(p));
466 /* Otherwise, recurse through any VEVENT subcomponents. We do NOT want the
467 * UID of the reply; we want the UID of the invitation being replied to.
469 for (subcomponent = icalcomponent_get_first_component(cal, ICAL_VEVENT_COMPONENT);
470 subcomponent != NULL;
471 subcomponent = icalcomponent_get_next_component(cal, ICAL_VEVENT_COMPONENT) ) {
472 ical_learn_uid_of_reply(uidbuf, subcomponent);
478 * ical_update_my_calendar_with_reply() refers to this callback function; when we
479 * locate the message containing the calendar event we're replying to, this function
480 * gets called. It basically just sticks the message number in a supplied buffer.
482 void ical_hunt_for_event_to_update(long msgnum, void *data) {
485 msgnumptr = (long *) data;
490 struct original_event_container {
495 * Callback function for mime parser that hunts for calendar content types
496 * and turns them into calendar objects (called by ical_update_my_calendar_with_reply()
497 * to fetch the object being updated)
499 void ical_locate_original_event(char *name, char *filename, char *partnum, char *disp,
500 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
503 struct original_event_container *oec = NULL;
505 if (strcasecmp(cbtype, "text/calendar")) {
508 oec = (struct original_event_container *) cbuserdata;
509 if (oec->c != NULL) {
510 icalcomponent_free(oec->c);
512 oec->c = icalcomponent_new_from_string(content);
517 * Merge updated attendee information from a REPLY into an existing event.
519 void ical_merge_attendee_reply(icalcomponent *event, icalcomponent *reply) {
521 icalproperty *e_attendee, *r_attendee;
523 /* First things first. If we're not looking at a VEVENT component,
524 * recurse through subcomponents until we find one.
526 if (icalcomponent_isa(event) != ICAL_VEVENT_COMPONENT) {
527 for (c = icalcomponent_get_first_component(event, ICAL_VEVENT_COMPONENT);
529 c = icalcomponent_get_next_component(event, ICAL_VEVENT_COMPONENT) ) {
530 ical_merge_attendee_reply(c, reply);
535 /* Now do the same thing with the reply.
537 if (icalcomponent_isa(reply) != ICAL_VEVENT_COMPONENT) {
538 for (c = icalcomponent_get_first_component(reply, ICAL_VEVENT_COMPONENT);
540 c = icalcomponent_get_next_component(reply, ICAL_VEVENT_COMPONENT) ) {
541 ical_merge_attendee_reply(event, c);
546 /* Clone the reply, because we're going to rip its guts out. */
547 reply = icalcomponent_new_clone(reply);
549 /* At this point we're looking at the correct subcomponents.
550 * Iterate through the attendees looking for a match.
553 for (e_attendee = icalcomponent_get_first_property(event, ICAL_ATTENDEE_PROPERTY);
555 e_attendee = icalcomponent_get_next_property(event, ICAL_ATTENDEE_PROPERTY)) {
557 for (r_attendee = icalcomponent_get_first_property(reply, ICAL_ATTENDEE_PROPERTY);
559 r_attendee = icalcomponent_get_next_property(reply, ICAL_ATTENDEE_PROPERTY)) {
561 /* Check to see if these two attendees match...
564 icalproperty_get_attendee(e_attendee),
565 icalproperty_get_attendee(r_attendee)
567 /* ...and if they do, remove the attendee from the event
568 * and replace it with the attendee from the reply. (The
569 * reply's copy will have the same address, but an updated
572 icalcomponent_remove_property(event, e_attendee);
573 icalproperty_free(e_attendee);
574 icalcomponent_remove_property(reply, r_attendee);
575 icalcomponent_add_property(event, r_attendee);
577 /* Since we diddled both sets of attendees, we have to start
578 * the iteration over again. This will not create an infinite
579 * loop because we removed the attendee from the reply. (That's
580 * why we cloned the reply, and that's what we mean by "ripping
589 /* Free the *clone* of the reply. */
590 icalcomponent_free(reply);
597 * Handle an incoming RSVP (object with method==ICAL_METHOD_REPLY) for a
598 * calendar event. The object has already been deserialized for us; all
599 * we have to do here is hunt for the event in our calendar, merge in the
600 * updated attendee status, and save it again.
602 * This function returns 0 on success, 1 if the event was not found in the
603 * user's calendar, or 2 if an internal error occurred.
605 int ical_update_my_calendar_with_reply(icalcomponent *cal) {
607 char hold_rm[ROOMNAMELEN];
608 long msgnum_being_replaced = 0;
609 struct CtdlMessage *msg;
610 struct original_event_container oec;
611 icalcomponent *original_event;
612 char *serialized_event = NULL;
613 char roomname[ROOMNAMELEN];
614 char *message_text = NULL;
616 /* Figure out just what event it is we're dealing with */
617 strcpy(uid, "--==<< InVaLiD uId >>==--");
618 ical_learn_uid_of_reply(uid, cal);
619 lprintf(CTDL_DEBUG, "UID of event being replied to is <%s>\n", uid);
621 strcpy(hold_rm, CC->room.QRname); /* save current room */
623 if (getroom(&CC->room, USERCALENDARROOM) != 0) {
624 getroom(&CC->room, hold_rm);
625 lprintf(CTDL_CRIT, "cannot get user calendar room\n");
630 * Look in the EUID index for a message with
631 * the Citadel EUID set to the value we're looking for. Since
632 * Citadel always sets the message EUID to the vCalendar UID of
633 * the event, this will work.
635 msgnum_being_replaced = locate_message_by_euid(uid, &CC->room);
637 getroom(&CC->room, hold_rm); /* return to saved room */
639 lprintf(CTDL_DEBUG, "msgnum_being_replaced == %ld\n", msgnum_being_replaced);
640 if (msgnum_being_replaced == 0) {
641 return(1); /* no calendar event found */
644 /* Now we know the ID of the message containing the event being updated.
645 * We don't actually have to delete it; that'll get taken care of by the
646 * server when we save another event with the same UID. This just gives
647 * us the ability to load the event into memory so we can diddle the
650 msg = CtdlFetchMessage(msgnum_being_replaced, 1);
652 return(2); /* internal error */
655 mime_parser(msg->cm_fields['M'],
657 *ical_locate_original_event, /* callback function */
659 &oec, /* user data */
662 CtdlFreeMessage(msg);
664 original_event = oec.c;
665 if (original_event == NULL) {
666 lprintf(CTDL_ERR, "ERROR: Original_component is NULL.\n");
670 /* Merge the attendee's updated status into the event */
671 ical_merge_attendee_reply(original_event, cal);
674 serialized_event = strdup(icalcomponent_as_ical_string(original_event));
675 icalcomponent_free(original_event); /* Don't need this anymore. */
676 if (serialized_event == NULL) return(2);
678 MailboxName(roomname, sizeof roomname, &CC->user, USERCALENDARROOM);
680 message_text = malloc(strlen(serialized_event) + SIZ);
681 if (message_text != NULL) {
682 sprintf(message_text,
683 "Content-type: text/calendar\r\n\r\n%s\r\n",
687 msg = CtdlMakeMessage(&CC->user,
688 "", /* No recipient */
689 "", /* No recipient */
698 CIT_ICAL->avoid_sending_invitations = 1;
699 CtdlSubmitMsg(msg, NULL, roomname);
700 CtdlFreeMessage(msg);
701 CIT_ICAL->avoid_sending_invitations = 0;
704 free(serialized_event);
710 * Handle an incoming RSVP for an event. (This is the server subcommand part; it
711 * simply extracts the calendar object from the message, deserializes it, and
712 * passes it up to ical_update_my_calendar_with_reply() for processing.
714 void ical_handle_rsvp(long msgnum, char *partnum, char *action) {
715 struct CtdlMessage *msg;
716 struct ical_respond_data ird;
720 (strcasecmp(action, "update"))
721 && (strcasecmp(action, "ignore"))
723 cprintf("%d Action must be 'update' or 'ignore'\n",
724 ERROR + ILLEGAL_VALUE
729 msg = CtdlFetchMessage(msgnum, 1);
731 cprintf("%d Message %ld not found.\n",
732 ERROR + ILLEGAL_VALUE,
738 memset(&ird, 0, sizeof ird);
739 strcpy(ird.desired_partnum, partnum);
740 mime_parser(msg->cm_fields['M'],
742 *ical_locate_part, /* callback function */
744 (void *) &ird, /* user data */
748 /* We're done with the incoming message, because we now have a
749 * calendar object in memory.
751 CtdlFreeMessage(msg);
754 * Here is the real meat of this function. Handle the event.
756 if (ird.cal != NULL) {
757 /* Update the user's calendar if necessary */
758 if (!strcasecmp(action, "update")) {
759 ret = ical_update_my_calendar_with_reply(ird.cal);
761 cprintf("%d Your calendar has been updated with this reply.\n",
765 cprintf("%d This event does not exist in your calendar.\n",
766 ERROR + FILE_NOT_FOUND);
769 cprintf("%d An internal error occurred.\n",
770 ERROR + INTERNAL_ERROR);
774 cprintf("%d This reply has been ignored.\n", CIT_OK);
777 /* Now that we've processed this message, we don't need it
778 * anymore. So delete it. (Maybe make this optional?)
780 CtdlDeleteMessages(CC->room.QRname, msgnum, "", 1);
782 /* Free the memory we allocated and return a response. */
783 icalcomponent_free(ird.cal);
788 cprintf("%d No calendar object found\n", ERROR + ROOM_NOT_FOUND);
792 /* should never get here */
797 * Search for a property in both the top level and in a VEVENT subcomponent
799 icalproperty *ical_ctdl_get_subprop(
801 icalproperty_kind which_prop
806 p = icalcomponent_get_first_property(cal, which_prop);
808 c = icalcomponent_get_first_component(cal,
809 ICAL_VEVENT_COMPONENT);
811 p = icalcomponent_get_first_property(c, which_prop);
819 * Check to see if two events overlap. Returns nonzero if they do.
820 * (This function is used in both Citadel and WebCit. If you change it in
821 * one place, change it in the other. Better yet, put it in a library.)
823 int ical_ctdl_is_overlap(
824 struct icaltimetype t1start,
825 struct icaltimetype t1end,
826 struct icaltimetype t2start,
827 struct icaltimetype t2end
830 if (icaltime_is_null_time(t1start)) return(0);
831 if (icaltime_is_null_time(t2start)) return(0);
833 /* First, check for all-day events */
834 if (t1start.is_date) {
835 if (!icaltime_compare_date_only(t1start, t2start)) {
838 if (!icaltime_is_null_time(t2end)) {
839 if (!icaltime_compare_date_only(t1start, t2end)) {
845 if (t2start.is_date) {
846 if (!icaltime_compare_date_only(t2start, t1start)) {
849 if (!icaltime_is_null_time(t1end)) {
850 if (!icaltime_compare_date_only(t2start, t1end)) {
856 /* Now check for overlaps using date *and* time. */
858 /* First, bail out if either event 1 or event 2 is missing end time. */
859 if (icaltime_is_null_time(t1end)) return(0);
860 if (icaltime_is_null_time(t2end)) return(0);
862 /* If event 1 ends before event 2 starts, we're in the clear. */
863 if (icaltime_compare(t1end, t2start) <= 0) return(0);
865 /* If event 2 ends before event 1 starts, we're also ok. */
866 if (icaltime_compare(t2end, t1start) <= 0) return(0);
868 /* Otherwise, they overlap. */
875 * Backend for ical_hunt_for_conflicts()
877 void ical_hunt_for_conflicts_backend(long msgnum, void *data) {
879 struct CtdlMessage *msg;
880 struct ical_respond_data ird;
881 struct icaltimetype t1start, t1end, t2start, t2end;
883 char conflict_event_uid[SIZ];
884 char conflict_event_summary[SIZ];
885 char compare_uid[SIZ];
887 cal = (icalcomponent *)data;
888 strcpy(compare_uid, "");
889 strcpy(conflict_event_uid, "");
890 strcpy(conflict_event_summary, "");
892 msg = CtdlFetchMessage(msgnum, 1);
893 if (msg == NULL) return;
894 memset(&ird, 0, sizeof ird);
895 strcpy(ird.desired_partnum, "_HUNT_");
896 mime_parser(msg->cm_fields['M'],
898 *ical_locate_part, /* callback function */
900 (void *) &ird, /* user data */
903 CtdlFreeMessage(msg);
905 if (ird.cal == NULL) return;
907 t1start = icaltime_null_time();
908 t1end = icaltime_null_time();
909 t2start = icaltime_null_time();
910 t1end = icaltime_null_time();
912 /* Now compare cal to ird.cal */
913 p = ical_ctdl_get_subprop(ird.cal, ICAL_DTSTART_PROPERTY);
914 if (p == NULL) return;
915 if (p != NULL) t2start = icalproperty_get_dtstart(p);
917 p = ical_ctdl_get_subprop(ird.cal, ICAL_DTEND_PROPERTY);
918 if (p != NULL) t2end = icalproperty_get_dtend(p);
920 p = ical_ctdl_get_subprop(cal, ICAL_DTSTART_PROPERTY);
921 if (p == NULL) return;
922 if (p != NULL) t1start = icalproperty_get_dtstart(p);
924 p = ical_ctdl_get_subprop(cal, ICAL_DTEND_PROPERTY);
925 if (p != NULL) t1end = icalproperty_get_dtend(p);
927 p = ical_ctdl_get_subprop(cal, ICAL_UID_PROPERTY);
929 strcpy(compare_uid, icalproperty_get_comment(p));
932 p = ical_ctdl_get_subprop(ird.cal, ICAL_UID_PROPERTY);
934 strcpy(conflict_event_uid, icalproperty_get_comment(p));
937 p = ical_ctdl_get_subprop(ird.cal, ICAL_SUMMARY_PROPERTY);
939 strcpy(conflict_event_summary, icalproperty_get_comment(p));
942 icalcomponent_free(ird.cal);
944 if (ical_ctdl_is_overlap(t1start, t1end, t2start, t2end)) {
945 cprintf("%ld||%s|%s|%d|\n",
948 conflict_event_summary,
949 ( ((strlen(compare_uid)>0)
950 &&(!strcasecmp(compare_uid,
951 conflict_event_uid))) ? 1 : 0
960 * Phase 2 of "hunt for conflicts" operation.
961 * At this point we have a calendar object which represents the VEVENT that
962 * we're considering adding to the calendar. Now hunt through the user's
963 * calendar room, and output zero or more existing VEVENTs which conflict
966 void ical_hunt_for_conflicts(icalcomponent *cal) {
967 char hold_rm[ROOMNAMELEN];
969 strcpy(hold_rm, CC->room.QRname); /* save current room */
971 if (getroom(&CC->room, USERCALENDARROOM) != 0) {
972 getroom(&CC->room, hold_rm);
973 cprintf("%d You do not have a calendar.\n", ERROR + ROOM_NOT_FOUND);
977 cprintf("%d Conflicting events:\n", LISTING_FOLLOWS);
979 CtdlForEachMessage(MSGS_ALL, 0, "text/calendar",
981 ical_hunt_for_conflicts_backend,
986 getroom(&CC->room, hold_rm); /* return to saved room */
993 * Hunt for conflicts (Phase 1 -- retrieve the object and call Phase 2)
995 void ical_conflicts(long msgnum, char *partnum) {
996 struct CtdlMessage *msg;
997 struct ical_respond_data ird;
999 msg = CtdlFetchMessage(msgnum, 1);
1001 cprintf("%d Message %ld not found.\n",
1002 ERROR + ILLEGAL_VALUE,
1008 memset(&ird, 0, sizeof ird);
1009 strcpy(ird.desired_partnum, partnum);
1010 mime_parser(msg->cm_fields['M'],
1012 *ical_locate_part, /* callback function */
1014 (void *) &ird, /* user data */
1018 CtdlFreeMessage(msg);
1020 if (ird.cal != NULL) {
1021 ical_hunt_for_conflicts(ird.cal);
1022 icalcomponent_free(ird.cal);
1026 cprintf("%d No calendar object found\n", ERROR + ROOM_NOT_FOUND);
1030 /* should never get here */
1036 * Look for busy time in a VEVENT and add it to the supplied VFREEBUSY.
1038 void ical_add_to_freebusy(icalcomponent *fb, icalcomponent *cal) {
1041 struct icalperiodtype my_period;
1043 if (cal == NULL) return;
1044 my_period = icalperiodtype_null_period();
1046 if (icalcomponent_isa(cal) != ICAL_VEVENT_COMPONENT) {
1047 ical_add_to_freebusy(fb,
1048 icalcomponent_get_first_component(
1049 cal, ICAL_VEVENT_COMPONENT
1057 /* If this event is not opaque, the user isn't publishing it as
1058 * busy time, so don't bother doing anything else.
1060 p = icalcomponent_get_first_property(cal, ICAL_TRANSP_PROPERTY);
1062 v = icalproperty_get_value(p);
1064 if (icalvalue_get_transp(v) != ICAL_TRANSP_OPAQUE) {
1070 /* Convert the DTSTART and DTEND properties to an icalperiod. */
1071 p = icalcomponent_get_first_property(cal, ICAL_DTSTART_PROPERTY);
1073 my_period.start = icalproperty_get_dtstart(p);
1076 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
1078 my_period.end = icalproperty_get_dtstart(p);
1082 icalcomponent_add_property(fb,
1083 icalproperty_new_freebusy(my_period)
1086 /* Make sure the DTSTART property of the freebusy *list* is set to
1087 * the DTSTART property of the *earliest event*.
1089 p = icalcomponent_get_first_property(fb, ICAL_DTSTART_PROPERTY);
1091 icalcomponent_set_dtstart(fb,
1092 icalcomponent_get_dtstart(cal) );
1095 if (icaltime_compare(
1096 icalcomponent_get_dtstart(cal),
1097 icalcomponent_get_dtstart(fb)
1099 icalcomponent_set_dtstart(fb,
1100 icalcomponent_get_dtstart(cal) );
1104 /* Make sure the DTEND property of the freebusy *list* is set to
1105 * the DTEND property of the *latest event*.
1107 p = icalcomponent_get_first_property(fb, ICAL_DTEND_PROPERTY);
1109 icalcomponent_set_dtend(fb,
1110 icalcomponent_get_dtend(cal) );
1113 if (icaltime_compare(
1114 icalcomponent_get_dtend(cal),
1115 icalcomponent_get_dtend(fb)
1117 icalcomponent_set_dtend(fb,
1118 icalcomponent_get_dtend(cal) );
1127 * Backend for ical_freebusy()
1129 * This function simply loads the messages in the user's calendar room,
1130 * which contain VEVENTs, then strips them of all non-freebusy data, and
1131 * adds them to the supplied VCALENDAR.
1134 void ical_freebusy_backend(long msgnum, void *data) {
1136 struct CtdlMessage *msg;
1137 struct ical_respond_data ird;
1139 cal = (icalcomponent *)data;
1141 msg = CtdlFetchMessage(msgnum, 1);
1142 if (msg == NULL) return;
1143 memset(&ird, 0, sizeof ird);
1144 strcpy(ird.desired_partnum, "_HUNT_");
1145 mime_parser(msg->cm_fields['M'],
1147 *ical_locate_part, /* callback function */
1149 (void *) &ird, /* user data */
1152 CtdlFreeMessage(msg);
1154 if (ird.cal == NULL) return;
1156 ical_add_to_freebusy(cal, ird.cal);
1158 /* Now free the memory. */
1159 icalcomponent_free(ird.cal);
1165 * Grab another user's free/busy times
1167 void ical_freebusy(char *who) {
1168 struct ctdluser usbuf;
1169 char calendar_room_name[ROOMNAMELEN];
1170 char hold_rm[ROOMNAMELEN];
1171 char *serialized_request = NULL;
1172 icalcomponent *encaps = NULL;
1173 icalcomponent *fb = NULL;
1174 int found_user = (-1);
1175 struct recptypes *recp = NULL;
1180 int config_lines = 0;
1182 /* First try an exact match. */
1183 found_user = getuser(&usbuf, who);
1185 /* If not found, try it as an unqualified email address. */
1186 if (found_user != 0) {
1188 recp = validate_recipients(buf);
1189 lprintf(CTDL_DEBUG, "Trying <%s>\n", buf);
1191 if (recp->num_local == 1) {
1192 found_user = getuser(&usbuf, recp->recp_local);
1198 /* If still not found, try it as an address qualified with the
1199 * primary FQDN of this Citadel node.
1201 if (found_user != 0) {
1202 snprintf(buf, sizeof buf, "%s@%s", who, config.c_fqdn);
1203 lprintf(CTDL_DEBUG, "Trying <%s>\n", buf);
1204 recp = validate_recipients(buf);
1206 if (recp->num_local == 1) {
1207 found_user = getuser(&usbuf, recp->recp_local);
1213 /* Still not found? Try qualifying it with every domain we
1214 * might have addresses in.
1216 if (found_user != 0) {
1217 config_lines = num_tokens(inetcfg, '\n');
1218 for (i=0; ((i < config_lines) && (found_user != 0)); ++i) {
1219 extract_token(buf, inetcfg, i, '\n', sizeof buf);
1220 extract_token(host, buf, 0, '|', sizeof host);
1221 extract_token(type, buf, 1, '|', sizeof type);
1223 if ( (!strcasecmp(type, "localhost"))
1224 || (!strcasecmp(type, "directory")) ) {
1225 snprintf(buf, sizeof buf, "%s@%s", who, host);
1226 lprintf(CTDL_DEBUG, "Trying <%s>\n", buf);
1227 recp = validate_recipients(buf);
1229 if (recp->num_local == 1) {
1230 found_user = getuser(&usbuf, recp->recp_local);
1238 if (found_user != 0) {
1239 cprintf("%d No such user.\n", ERROR + NO_SUCH_USER);
1243 MailboxName(calendar_room_name, sizeof calendar_room_name,
1244 &usbuf, USERCALENDARROOM);
1246 strcpy(hold_rm, CC->room.QRname); /* save current room */
1248 if (getroom(&CC->room, calendar_room_name) != 0) {
1249 cprintf("%d Cannot open calendar\n", ERROR + ROOM_NOT_FOUND);
1250 getroom(&CC->room, hold_rm);
1254 /* Create a VFREEBUSY subcomponent */
1255 lprintf(CTDL_DEBUG, "Creating VFREEBUSY component\n");
1256 fb = icalcomponent_new_vfreebusy();
1258 cprintf("%d Internal error: cannot allocate memory.\n",
1259 ERROR + INTERNAL_ERROR);
1260 icalcomponent_free(encaps);
1261 getroom(&CC->room, hold_rm);
1265 /* Set the method to PUBLISH */
1266 icalcomponent_set_method(fb, ICAL_METHOD_PUBLISH);
1268 /* Set the DTSTAMP to right now. */
1269 icalcomponent_set_dtstamp(fb, icaltime_from_timet(time(NULL), 0));
1271 /* Add the user's email address as ORGANIZER */
1272 sprintf(buf, "MAILTO:%s", who);
1273 if (strchr(buf, '@') == NULL) {
1275 strcat(buf, config.c_fqdn);
1277 for (i=0; i<strlen(buf); ++i) {
1278 if (buf[i]==' ') buf[i] = '_';
1280 icalcomponent_add_property(fb, icalproperty_new_organizer(buf));
1282 /* Add busy time from events */
1283 lprintf(CTDL_DEBUG, "Adding busy time from events\n");
1284 CtdlForEachMessage(MSGS_ALL, 0, "text/calendar",
1285 NULL, ical_freebusy_backend, (void *)fb
1288 /* If values for DTSTART and DTEND are still not present, set them
1289 * to yesterday and tomorrow as default values.
1291 if (icalcomponent_get_first_property(fb, ICAL_DTSTART_PROPERTY) == NULL) {
1292 icalcomponent_set_dtstart(fb, icaltime_from_timet(time(NULL)-86400L, 0));
1294 if (icalcomponent_get_first_property(fb, ICAL_DTEND_PROPERTY) == NULL) {
1295 icalcomponent_set_dtend(fb, icaltime_from_timet(time(NULL)+86400L, 0));
1298 /* Put the freebusy component into the calendar component */
1299 lprintf(CTDL_DEBUG, "Encapsulating\n");
1300 encaps = ical_encapsulate_subcomponent(fb);
1301 if (encaps == NULL) {
1302 icalcomponent_free(fb);
1303 cprintf("%d Internal error: cannot allocate memory.\n",
1304 ERROR + INTERNAL_ERROR);
1305 getroom(&CC->room, hold_rm);
1309 /* Set the method to PUBLISH */
1310 lprintf(CTDL_DEBUG, "Setting method\n");
1311 icalcomponent_set_method(encaps, ICAL_METHOD_PUBLISH);
1314 lprintf(CTDL_DEBUG, "Serializing\n");
1315 serialized_request = strdup(icalcomponent_as_ical_string(encaps));
1316 icalcomponent_free(encaps); /* Don't need this anymore. */
1318 cprintf("%d Here is the free/busy data:\n", LISTING_FOLLOWS);
1319 if (serialized_request != NULL) {
1320 client_write(serialized_request, strlen(serialized_request));
1321 free(serialized_request);
1325 /* Go back to the room from which we came... */
1326 getroom(&CC->room, hold_rm);
1332 * Backend for ical_getics()
1334 * This is a ForEachMessage() callback function that searches the current room
1335 * for calendar events and adds them each into one big calendar component.
1337 void ical_getics_backend(long msgnum, void *data) {
1338 icalcomponent *encaps, *c;
1339 struct CtdlMessage *msg;
1340 struct ical_respond_data ird;
1342 encaps = (icalcomponent *)data;
1343 if (encaps == NULL) return;
1345 /* Look for the calendar event... */
1347 msg = CtdlFetchMessage(msgnum, 1);
1348 if (msg == NULL) return;
1349 memset(&ird, 0, sizeof ird);
1350 strcpy(ird.desired_partnum, "_HUNT_");
1351 mime_parser(msg->cm_fields['M'],
1353 *ical_locate_part, /* callback function */
1355 (void *) &ird, /* user data */
1358 CtdlFreeMessage(msg);
1360 if (ird.cal == NULL) return;
1362 /* Here we go: put the VEVENT into the VCALENDAR. We now no longer
1363 * are responsible for "the_request"'s memory -- it will be freed
1364 * when we free "encaps".
1367 /* If the top-level component is *not* a VCALENDAR, we can drop it right
1368 * in. This will almost never happen.
1370 if (icalcomponent_isa(ird.cal) != ICAL_VCALENDAR_COMPONENT) {
1371 icalcomponent_add_component(encaps, ird.cal);
1374 * In the more likely event that we're looking at a VCALENDAR with the VEVENT
1375 * and other components encapsulated inside, we have to extract them.
1378 for (c = icalcomponent_get_first_component(ird.cal, ICAL_ANY_COMPONENT);
1380 c = icalcomponent_get_next_component(ird.cal, ICAL_ANY_COMPONENT)) {
1381 icalcomponent_add_component(encaps, icalcomponent_new_clone(c));
1383 icalcomponent_free(ird.cal);
1390 * Retrieve all of the calendar items in the current room, and output them
1391 * as a single icalendar object.
1393 void ical_getics(void)
1395 icalcomponent *encaps = NULL;
1398 if ( (CC->room.QRdefaultview != VIEW_CALENDAR)
1399 &&(CC->room.QRdefaultview != VIEW_TASKS) ) {
1400 cprintf("%d Not a calendar room\n", ERROR+NOT_HERE);
1401 return; /* Not a vCalendar-centric room */
1404 encaps = icalcomponent_new_vcalendar();
1405 if (encaps == NULL) {
1406 lprintf(CTDL_DEBUG, "Error at %s:%d - could not allocate component!\n",
1407 __FILE__, __LINE__);
1408 cprintf("%d Could not allocate memory\n", ERROR+INTERNAL_ERROR);
1412 cprintf("%d one big calendar\n", LISTING_FOLLOWS);
1414 /* Set the Product ID */
1415 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
1417 /* Set the Version Number */
1418 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
1420 /* Set the method to REQUEST */
1421 icalcomponent_set_method(encaps, ICAL_METHOD_PUBLISH);
1423 /* Now go through the room encapsulating all calendar items. */
1424 CtdlForEachMessage(MSGS_ALL, 0, "text/calendar",
1426 ical_getics_backend,
1430 ser = strdup(icalcomponent_as_ical_string(encaps));
1431 client_write(ser, strlen(ser));
1434 icalcomponent_free(encaps); /* Don't need this anymore. */
1440 * Delete all of the calendar items in the current room, and replace them
1441 * with calendar items from a client-supplied data stream.
1443 void ical_putics(void)
1445 char *calstream = NULL;
1448 if ( (CC->room.QRdefaultview != VIEW_CALENDAR)
1449 &&(CC->room.QRdefaultview != VIEW_TASKS) ) {
1450 cprintf("%d Not a calendar room\n", ERROR+NOT_HERE);
1451 return; /* Not a vCalendar-centric room */
1454 if (!CtdlDoIHavePermissionToDeleteMessagesFromThisRoom()) {
1455 cprintf("%d Permission denied.\n", ERROR+HIGHER_ACCESS_REQUIRED);
1459 cprintf("%d Transmit data now\n", SEND_LISTING);
1460 calstream = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0);
1461 if (calstream == NULL) {
1465 cal = icalcomponent_new_from_string(calstream);
1469 /* FIXME -- WRITE THE CODE TO TAKE APART THE CALENDAR AND POST ITS ITEMS */
1471 icalcomponent_free(cal);
1476 * All Citadel calendar commands from the client come through here.
1478 void cmd_ical(char *argbuf)
1486 extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1488 /* Allow "test" and "freebusy" subcommands without logging in. */
1490 if (!strcasecmp(subcmd, "test")) {
1491 cprintf("%d This server supports calendaring\n", CIT_OK);
1495 if (!strcasecmp(subcmd, "freebusy")) {
1496 extract_token(who, argbuf, 1, '|', sizeof who);
1501 if (!strcasecmp(subcmd, "sgi")) {
1502 CIT_ICAL->server_generated_invitations =
1503 (extract_int(argbuf, 1) ? 1 : 0) ;
1505 CIT_OK, CIT_ICAL->server_generated_invitations);
1509 if (CtdlAccessCheck(ac_logged_in)) return;
1511 if (!strcasecmp(subcmd, "respond")) {
1512 msgnum = extract_long(argbuf, 1);
1513 extract_token(partnum, argbuf, 2, '|', sizeof partnum);
1514 extract_token(action, argbuf, 3, '|', sizeof action);
1515 ical_respond(msgnum, partnum, action);
1519 if (!strcasecmp(subcmd, "handle_rsvp")) {
1520 msgnum = extract_long(argbuf, 1);
1521 extract_token(partnum, argbuf, 2, '|', sizeof partnum);
1522 extract_token(action, argbuf, 3, '|', sizeof action);
1523 ical_handle_rsvp(msgnum, partnum, action);
1527 if (!strcasecmp(subcmd, "conflicts")) {
1528 msgnum = extract_long(argbuf, 1);
1529 extract_token(partnum, argbuf, 2, '|', sizeof partnum);
1530 ical_conflicts(msgnum, partnum);
1534 if (!strcasecmp(subcmd, "getics")) {
1539 if (!strcasecmp(subcmd, "putics")) {
1544 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1550 * We don't know if the calendar room exists so we just create it at login
1552 void ical_create_room(void)
1557 /* Create the calendar room if it doesn't already exist */
1558 create_room(USERCALENDARROOM, 4, "", 0, 1, 0, VIEW_CALENDAR);
1560 /* Set expiration policy to manual; otherwise objects will be lost! */
1561 if (lgetroom(&qr, USERCALENDARROOM)) {
1562 lprintf(CTDL_CRIT, "Couldn't get the user calendar room!\n");
1565 qr.QRep.expire_mode = EXPIRE_MANUAL;
1566 qr.QRdefaultview = VIEW_CALENDAR; /* 3 = calendar view */
1569 /* Set the view to a calendar view */
1570 CtdlGetRelationship(&vbuf, &CC->user, &qr);
1571 vbuf.v_view = VIEW_CALENDAR;
1572 CtdlSetRelationship(&vbuf, &CC->user, &qr);
1574 /* Create the tasks list room if it doesn't already exist */
1575 create_room(USERTASKSROOM, 4, "", 0, 1, 0, VIEW_TASKS);
1577 /* Set expiration policy to manual; otherwise objects will be lost! */
1578 if (lgetroom(&qr, USERTASKSROOM)) {
1579 lprintf(CTDL_CRIT, "Couldn't get the user calendar room!\n");
1582 qr.QRep.expire_mode = EXPIRE_MANUAL;
1583 qr.QRdefaultview = VIEW_TASKS;
1586 /* Set the view to a task list view */
1587 CtdlGetRelationship(&vbuf, &CC->user, &qr);
1588 vbuf.v_view = VIEW_TASKS;
1589 CtdlSetRelationship(&vbuf, &CC->user, &qr);
1591 /* Create the notes room if it doesn't already exist */
1592 create_room(USERNOTESROOM, 4, "", 0, 1, 0, VIEW_NOTES);
1594 /* Set expiration policy to manual; otherwise objects will be lost! */
1595 if (lgetroom(&qr, USERNOTESROOM)) {
1596 lprintf(CTDL_CRIT, "Couldn't get the user calendar room!\n");
1599 qr.QRep.expire_mode = EXPIRE_MANUAL;
1600 qr.QRdefaultview = VIEW_NOTES;
1603 /* Set the view to a notes view */
1604 CtdlGetRelationship(&vbuf, &CC->user, &qr);
1605 vbuf.v_view = VIEW_NOTES;
1606 CtdlSetRelationship(&vbuf, &CC->user, &qr);
1613 * ical_send_out_invitations() is called by ical_saving_vevent() when it
1616 void ical_send_out_invitations(icalcomponent *cal) {
1617 icalcomponent *the_request = NULL;
1618 char *serialized_request = NULL;
1619 icalcomponent *encaps = NULL;
1620 char *request_message_text = NULL;
1621 struct CtdlMessage *msg = NULL;
1622 struct recptypes *valid = NULL;
1623 char attendees_string[SIZ];
1624 int num_attendees = 0;
1625 char this_attendee[256];
1626 icalproperty *attendee = NULL;
1627 char summary_string[SIZ];
1628 icalproperty *summary = NULL;
1631 lprintf(CTDL_ERR, "ERROR: trying to reply to NULL event?\n");
1636 /* If this is a VCALENDAR component, look for a VEVENT subcomponent. */
1637 if (icalcomponent_isa(cal) == ICAL_VCALENDAR_COMPONENT) {
1638 ical_send_out_invitations(
1639 icalcomponent_get_first_component(
1640 cal, ICAL_VEVENT_COMPONENT
1646 /* Clone the event */
1647 the_request = icalcomponent_new_clone(cal);
1648 if (the_request == NULL) {
1649 lprintf(CTDL_ERR, "ERROR: cannot clone calendar object\n");
1653 /* Extract the summary string -- we'll use it as the
1654 * message subject for the request
1656 strcpy(summary_string, "Meeting request");
1657 summary = icalcomponent_get_first_property(the_request, ICAL_SUMMARY_PROPERTY);
1658 if (summary != NULL) {
1659 if (icalproperty_get_summary(summary)) {
1660 strcpy(summary_string,
1661 icalproperty_get_summary(summary) );
1665 /* Determine who the recipients of this message are (the attendees) */
1666 strcpy(attendees_string, "");
1667 for (attendee = icalcomponent_get_first_property(the_request, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(the_request, ICAL_ATTENDEE_PROPERTY)) {
1668 if (icalproperty_get_attendee(attendee)) {
1669 safestrncpy(this_attendee, icalproperty_get_attendee(attendee), sizeof this_attendee);
1670 if (!strncasecmp(this_attendee, "MAILTO:", 7)) {
1671 strcpy(this_attendee, &this_attendee[7]);
1673 if (!CtdlIsMe(this_attendee, sizeof this_attendee)) { /* don't send an invitation to myself! */
1674 snprintf(&attendees_string[strlen(attendees_string)],
1675 sizeof(attendees_string) - strlen(attendees_string),
1685 lprintf(CTDL_DEBUG, "<%d> attendees: <%s>\n", num_attendees, attendees_string);
1687 /* If there are no attendees, there are no invitations to send, so...
1688 * don't bother putting one together! Punch out, Maverick!
1690 if (num_attendees == 0) {
1691 icalcomponent_free(the_request);
1695 /* Encapsulate the VEVENT component into a complete VCALENDAR */
1696 encaps = icalcomponent_new_vcalendar();
1697 if (encaps == NULL) {
1698 lprintf(CTDL_DEBUG, "Error at %s:%d - could not allocate component!\n",
1699 __FILE__, __LINE__);
1700 icalcomponent_free(the_request);
1704 /* Set the Product ID */
1705 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
1707 /* Set the Version Number */
1708 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
1710 /* Set the method to REQUEST */
1711 icalcomponent_set_method(encaps, ICAL_METHOD_REQUEST);
1713 /* Now make sure all of the DTSTART and DTEND properties are UTC. */
1714 ical_dezonify(the_request);
1716 /* Here we go: put the VEVENT into the VCALENDAR. We now no longer
1717 * are responsible for "the_request"'s memory -- it will be freed
1718 * when we free "encaps".
1720 icalcomponent_add_component(encaps, the_request);
1723 serialized_request = strdup(icalcomponent_as_ical_string(encaps));
1724 icalcomponent_free(encaps); /* Don't need this anymore. */
1725 if (serialized_request == NULL) return;
1727 request_message_text = malloc(strlen(serialized_request) + SIZ);
1728 if (request_message_text != NULL) {
1729 sprintf(request_message_text,
1730 "Content-type: text/calendar\r\n\r\n%s\r\n",
1734 msg = CtdlMakeMessage(&CC->user,
1735 "", /* No single recipient here */
1736 "", /* No single recipient here */
1737 CC->room.QRname, 0, FMT_RFC822,
1739 summary_string, /* Use summary for subject */
1741 request_message_text);
1744 valid = validate_recipients(attendees_string);
1745 CtdlSubmitMsg(msg, valid, "");
1746 CtdlFreeMessage(msg);
1749 free(serialized_request);
1754 * When a calendar object is being saved, determine whether it's a VEVENT
1755 * and the user saving it is the organizer. If so, send out invitations
1756 * to any listed attendees.
1759 void ical_saving_vevent(icalcomponent *cal) {
1761 icalproperty *organizer = NULL;
1762 char organizer_string[SIZ];
1764 /* Don't send out invitations unless the client wants us to. */
1765 if (CIT_ICAL->server_generated_invitations == 0) {
1769 /* Don't send out invitations if we've been asked not to. */
1770 if (CIT_ICAL->avoid_sending_invitations > 0) {
1774 strcpy(organizer_string, "");
1776 * The VEVENT subcomponent is the one we're interested in.
1777 * Send out invitations if, and only if, this user is the Organizer.
1779 if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
1780 organizer = icalcomponent_get_first_property(cal,
1781 ICAL_ORGANIZER_PROPERTY);
1782 if (organizer != NULL) {
1783 if (icalproperty_get_organizer(organizer)) {
1784 strcpy(organizer_string,
1785 icalproperty_get_organizer(organizer));
1788 if (!strncasecmp(organizer_string, "MAILTO:", 7)) {
1789 strcpy(organizer_string, &organizer_string[7]);
1790 striplt(organizer_string);
1792 * If the user saving the event is listed as the
1793 * organizer, then send out invitations.
1795 if (CtdlIsMe(organizer_string, sizeof organizer_string)) {
1796 ical_send_out_invitations(cal);
1801 /* If the component has subcomponents, recurse through them. */
1802 for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
1804 c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
1805 /* Recursively process subcomponent */
1806 ical_saving_vevent(c);
1814 * Back end for ical_obj_beforesave()
1815 * This hunts for the UID of the calendar event (becomes Citadel msg EUID),
1816 * the summary of the event (becomes message subject),
1817 * and the start time (becomes message date/time).
1819 void ical_ctdl_set_exclusive_msgid(char *name, char *filename, char *partnum,
1820 char *disp, void *content, char *cbtype, char *cbcharset, size_t length,
1821 char *encoding, void *cbuserdata)
1823 icalcomponent *cal, *nested_event, *nested_todo;
1825 struct icalmessagemod *imm;
1828 imm = (struct icalmessagemod *)cbuserdata;
1830 /* If this is a text/calendar object, hunt for the UID and drop it in
1831 * the "user data" pointer for the MIME parser. When
1832 * ical_obj_beforesave() sees it there, it'll set the Exclusive msgid
1835 if (!strcasecmp(cbtype, "text/calendar")) {
1836 cal = icalcomponent_new_from_string(content);
1838 if (icalcomponent_isa(cal) == ICAL_VCALENDAR_COMPONENT) {
1839 nested_event = icalcomponent_get_first_component(
1840 cal, ICAL_VEVENT_COMPONENT
1842 nested_todo = icalcomponent_get_first_component(
1843 cal, ICAL_VTODO_COMPONENT
1845 if (nested_event != NULL) {
1848 else if (nested_todo != NULL) {
1854 p = ical_ctdl_get_subprop(cal, ICAL_UID_PROPERTY);
1856 /* If there's no uid we must generate one */
1857 generate_uuid(new_uid);
1858 icalcomponent_add_property(cal, icalproperty_new_uid(new_uid));
1859 p = ical_ctdl_get_subprop(cal, ICAL_UID_PROPERTY);
1862 strcpy(imm->uid, icalproperty_get_comment(p));
1863 /* strcpy(imm->subject, icalproperty_get_comment(p)); old aethera hack */
1865 p = ical_ctdl_get_subprop(cal, ICAL_SUMMARY_PROPERTY);
1867 strcpy(imm->subject, icalproperty_get_comment(p));
1869 p = ical_ctdl_get_subprop(cal, ICAL_DTSTART_PROPERTY);
1871 imm->dtstart = icaltime_as_timet(icalproperty_get_dtstart(p));
1873 icalcomponent_free(cal);
1883 * See if we need to prevent the object from being saved (we don't allow
1884 * MIME types other than text/calendar in "calendar" or "tasks" rooms). Also,
1885 * when saving an event to the calendar, set the message's Citadel exclusive
1886 * message ID to the UID of the object. This causes our replication checker to
1887 * automatically delete any existing instances of the same object. (Isn't
1890 * We also set the message's Subject to the event summary, and the Date/time to
1891 * the event start time.
1893 int ical_obj_beforesave(struct CtdlMessage *msg)
1897 struct icalmessagemod imm;
1899 /* First determine if this is a calendar or tasks room */
1900 if ( (CC->room.QRdefaultview != VIEW_CALENDAR)
1901 &&(CC->room.QRdefaultview != VIEW_TASKS) ) {
1902 return(0); /* Not a vCalendar-centric room */
1905 /* It must be an RFC822 message! */
1906 if (msg->cm_format_type != 4) {
1907 return 1; /* You tried to save a non-RFC822 message! */
1910 /* Find the Content-Type: header */
1911 p = msg->cm_fields['M'];
1914 if (!strncasecmp(p, "Content-Type: ", 14)) { /* Found it */
1915 if (!strncasecmp(p + 14, "text/calendar", 13)) {
1916 memset(&imm, 0, sizeof(struct icalmessagemod));
1917 mime_parser(msg->cm_fields['M'],
1919 *ical_ctdl_set_exclusive_msgid,
1924 if (strlen(imm.uid) > 0) {
1925 if (msg->cm_fields['E'] != NULL) {
1926 free(msg->cm_fields['E']);
1928 msg->cm_fields['E'] = strdup(imm.uid);
1930 if (strlen(imm.subject) > 0) {
1931 if (msg->cm_fields['U'] != NULL) {
1932 free(msg->cm_fields['U']);
1934 msg->cm_fields['U'] = strdup(imm.subject);
1936 if (imm.dtstart > 0) {
1937 if (msg->cm_fields['T'] != NULL) {
1938 free(msg->cm_fields['T']);
1940 msg->cm_fields['T'] = strdup("000000000000000000");
1941 sprintf(msg->cm_fields['T'], "%ld", imm.dtstart);
1952 /* Oops! No Content-Type in this message! How'd that happen? */
1953 lprintf(CTDL_ERR, "RFC822 message with no Content-Type header!\n");
1959 * Things we need to do after saving a calendar event.
1961 void ical_obj_aftersave_backend(char *name, char *filename, char *partnum,
1962 char *disp, void *content, char *cbtype, char *cbcharset, size_t length,
1963 char *encoding, void *cbuserdata)
1967 /* If this is a text/calendar object, hunt for the UID and drop it in
1968 * the "user data" pointer for the MIME parser. When
1969 * ical_obj_beforesave() sees it there, it'll set the Exclusive msgid
1972 if (!strcasecmp(cbtype, "text/calendar")) {
1973 cal = icalcomponent_new_from_string(content);
1975 ical_saving_vevent(cal);
1976 icalcomponent_free(cal);
1983 * Things we need to do after saving a calendar event.
1985 int ical_obj_aftersave(struct CtdlMessage *msg)
1987 char roomname[ROOMNAMELEN];
1992 * If this isn't the Calendar> room, no further action is necessary.
1995 /* First determine if this is our room */
1996 MailboxName(roomname, sizeof roomname, &CC->user, USERCALENDARROOM);
1997 if (strcasecmp(roomname, CC->room.QRname)) {
1998 return 0; /* It's not the Calendar room. */
2001 /* Then determine content-type of the message */
2003 /* It must be an RFC822 message! */
2004 /* FIXME: Not handling MIME multipart messages; implement with IMIP */
2005 if (msg->cm_format_type != 4) return(1);
2007 /* Find the Content-Type: header */
2008 p = msg->cm_fields['M'];
2011 if (!strncasecmp(p, "Content-Type: ", 14)) { /* Found it */
2012 if (!strncasecmp(p + 14, "text/calendar", 13)) {
2013 mime_parser(msg->cm_fields['M'],
2015 *ical_obj_aftersave_backend,
2029 /* Oops! No Content-Type in this message! How'd that happen? */
2030 lprintf(CTDL_ERR, "RFC822 message with no Content-Type header!\n");
2035 void ical_session_startup(void) {
2036 CIT_ICAL = malloc(sizeof(struct cit_ical));
2037 memset(CIT_ICAL, 0, sizeof(struct cit_ical));
2040 void ical_session_shutdown(void) {
2046 * Back end for ical_fixed_output()
2048 void ical_fixed_output_backend(icalcomponent *cal,
2052 icalproperty *method = NULL;
2053 icalproperty_method the_method = ICAL_METHOD_NONE;
2055 struct icaltimetype t;
2059 /* Look for a method */
2060 method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
2062 /* See what we need to do with this */
2063 if (method != NULL) {
2064 the_method = icalproperty_get_method(method);
2065 switch(the_method) {
2066 case ICAL_METHOD_REQUEST:
2067 cprintf("Meeting invitation\n");
2069 case ICAL_METHOD_REPLY:
2070 cprintf("Attendee's reply to your invitation\n");
2072 case ICAL_METHOD_PUBLISH:
2073 cprintf("Published event\n");
2076 cprintf("This is an unknown type of calendar item.\n");
2081 p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
2083 cprintf("Summary: %s\n", (const char *)icalproperty_get_comment(p));
2086 p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
2088 cprintf("Location: %s\n", (const char *)icalproperty_get_comment(p));
2092 * Only show start/end times if we're actually looking at the VEVENT
2093 * component. Otherwise it shows bogus dates for things like timezone.
2095 if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
2097 p = icalcomponent_get_first_property(cal,
2098 ICAL_DTSTART_PROPERTY);
2100 t = icalproperty_get_dtstart(p);
2103 cprintf("Date: %s %d, %d\n",
2104 ascmonths[t.month - 1],
2109 tt = icaltime_as_timet(t);
2110 fmt_date(buf, sizeof buf, tt, 0);
2111 cprintf("Starting date/time: %s\n", buf);
2115 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
2117 t = icalproperty_get_dtend(p);
2118 tt = icaltime_as_timet(t);
2119 fmt_date(buf, sizeof buf, tt, 0);
2120 cprintf("Ending date/time: %s\n", buf);
2125 p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
2127 cprintf("Description: %s\n", (const char *)icalproperty_get_comment(p));
2130 /* If the component has attendees, iterate through them. */
2131 for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY); (p != NULL); p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
2132 cprintf("Attendee: ");
2133 safestrncpy(buf, icalproperty_get_attendee(p), sizeof buf);
2134 if (!strncasecmp(buf, "MAILTO:", 7)) {
2136 /* screen name or email address */
2137 strcpy(buf, &buf[7]);
2139 cprintf("%s ", buf);
2144 /* If the component has subcomponents, recurse through them. */
2145 for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
2147 c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
2148 /* Recursively process subcomponent */
2149 ical_fixed_output_backend(c, recursion_level+1);
2156 * Function to output a calendar item as plain text. Nobody uses MSG0
2157 * anymore, so really this is just so we expose the vCard data to the full
2160 void ical_fixed_output(char *ptr, int len) {
2164 stringy_cal = malloc(len + 1);
2165 safestrncpy(stringy_cal, ptr, len + 1);
2166 cal = icalcomponent_new_from_string(stringy_cal);
2170 cprintf("There was an error parsing this calendar item.\n");
2175 ical_fixed_output_backend(cal, 0);
2177 /* Free the memory we obtained from libical's constructor */
2178 icalcomponent_free(cal);
2182 #endif /* CITADEL_WITH_CALENDAR_SERVICE */
2185 * Register this module with the Citadel server.
2187 char *serv_calendar_init(void)
2189 #ifdef CITADEL_WITH_CALENDAR_SERVICE
2190 CtdlRegisterMessageHook(ical_obj_beforesave, EVT_BEFORESAVE);
2191 CtdlRegisterMessageHook(ical_obj_aftersave, EVT_AFTERSAVE);
2192 CtdlRegisterSessionHook(ical_create_room, EVT_LOGIN);
2193 CtdlRegisterProtoHook(cmd_ical, "ICAL", "Citadel iCal commands");
2194 CtdlRegisterSessionHook(ical_session_startup, EVT_START);
2195 CtdlRegisterSessionHook(ical_session_shutdown, EVT_STOP);
2196 CtdlRegisterFixedOutputHook("text/calendar", ical_fixed_output);