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>
22 #include <libical/ical.h>
23 #include <libcitadel.h>
26 #include "citserver.h"
32 #include "internet_addressing.h"
33 #include "serv_calendar.h"
34 #include "euidindex.h"
35 #include "ctdl_module.h"
36 #include "ical_dezonify.h"
40 struct ical_respond_data {
41 char desired_partnum[SIZ];
47 * Utility function to create a new VCALENDAR component with some of the
48 * required fields already set the way we like them.
50 icalcomponent *icalcomponent_new_citadel_vcalendar(void) {
51 icalcomponent *encaps;
53 encaps = icalcomponent_new_vcalendar();
55 CtdlLogPrintf(CTDL_CRIT, "ERROR: could not allocate component!\n");
59 /* Set the Product ID */
60 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
62 /* Set the Version Number */
63 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
70 * Utility function to encapsulate a subcomponent into a full VCALENDAR
72 icalcomponent *ical_encapsulate_subcomponent(icalcomponent *subcomp) {
73 icalcomponent *encaps;
75 /* If we're already looking at a full VCALENDAR component,
76 * don't bother ... just return itself.
78 if (icalcomponent_isa(subcomp) == ICAL_VCALENDAR_COMPONENT) {
82 /* Encapsulate the VEVENT component into a complete VCALENDAR */
83 encaps = icalcomponent_new_citadel_vcalendar();
84 if (encaps == NULL) return NULL;
86 /* Encapsulate the subcomponent inside */
87 icalcomponent_add_component(encaps, subcomp);
89 /* Return the object we just created. */
97 * Write a calendar object into the specified user's calendar room.
98 * If the supplied user is NULL, this function writes the calendar object
99 * to the currently selected room.
101 void ical_write_to_cal(struct ctdluser *u, icalcomponent *cal) {
103 icalcomponent *encaps = NULL;
104 struct CtdlMessage *msg = NULL;
105 icalcomponent *tmp=NULL;
107 if (cal == NULL) return;
109 /* If the supplied object is a subcomponent, encapsulate it in
110 * a full VCALENDAR component, and save that instead.
112 if (icalcomponent_isa(cal) != ICAL_VCALENDAR_COMPONENT) {
113 tmp = icalcomponent_new_clone(cal);
114 encaps = ical_encapsulate_subcomponent(tmp);
115 ical_write_to_cal(u, encaps);
116 icalcomponent_free(tmp);
117 icalcomponent_free(encaps);
121 ser = icalcomponent_as_ical_string_r(cal);
122 if (ser == NULL) return;
124 /* If the caller supplied a user, write to that user's default calendar room */
126 /* This handy API function does all the work for us. */
127 CtdlWriteObject(USERCALENDARROOM, /* which room */
128 "text/calendar", /* MIME type */
130 strlen(ser)+1, /* length */
133 0, /* don't delete others of this type */
138 /* If the caller did not supply a user, write to the currently selected room */
140 msg = malloc(sizeof(struct CtdlMessage));
141 memset(msg, 0, sizeof(struct CtdlMessage));
142 msg->cm_magic = CTDLMESSAGE_MAGIC;
143 msg->cm_anon_type = MES_NORMAL;
144 msg->cm_format_type = 4;
145 msg->cm_fields['A'] = strdup(CC->user.fullname);
146 msg->cm_fields['O'] = strdup(CC->room.QRname);
147 msg->cm_fields['N'] = strdup(config.c_nodename);
148 msg->cm_fields['H'] = strdup(config.c_humannode);
149 msg->cm_fields['M'] = malloc(strlen(ser) + 40);
150 strcpy(msg->cm_fields['M'], "Content-type: text/calendar\r\n\r\n");
151 strcat(msg->cm_fields['M'], ser);
153 /* Now write the data */
154 CtdlSubmitMsg(msg, NULL, "", QP_EADDR);
155 CtdlFreeMessage(msg);
158 /* In either case, now we can free the serialized calendar object */
164 * Send a reply to a meeting invitation.
166 * 'request' is the invitation to reply to.
167 * 'action' is the string "accept" or "decline" or "tentative".
170 void ical_send_a_reply(icalcomponent *request, char *action) {
171 icalcomponent *the_reply = NULL;
172 icalcomponent *vevent = NULL;
173 icalproperty *attendee = NULL;
174 char attendee_string[SIZ];
175 icalproperty *organizer = NULL;
176 char organizer_string[SIZ];
177 icalproperty *summary = NULL;
178 char summary_string[SIZ];
179 icalproperty *me_attend = NULL;
180 struct recptypes *recp = NULL;
181 icalparameter *partstat = NULL;
182 char *serialized_reply = NULL;
183 char *reply_message_text = NULL;
184 struct CtdlMessage *msg = NULL;
185 struct recptypes *valid = NULL;
187 strcpy(organizer_string, "");
188 strcpy(summary_string, "Calendar item");
190 if (request == NULL) {
191 CtdlLogPrintf(CTDL_ERR, "ERROR: trying to reply to NULL event?\n");
195 the_reply = icalcomponent_new_clone(request);
196 if (the_reply == NULL) {
197 CtdlLogPrintf(CTDL_ERR, "ERROR: cannot clone request\n");
201 /* Change the method from REQUEST to REPLY */
202 icalcomponent_set_method(the_reply, ICAL_METHOD_REPLY);
204 vevent = icalcomponent_get_first_component(the_reply, ICAL_VEVENT_COMPONENT);
205 if (vevent != NULL) {
206 /* Hunt for attendees, removing ones that aren't us.
207 * (Actually, remove them all, cloning our own one so we can
208 * re-insert it later)
210 while (attendee = icalcomponent_get_first_property(vevent,
211 ICAL_ATTENDEE_PROPERTY), (attendee != NULL)
213 if (icalproperty_get_attendee(attendee)) {
214 strcpy(attendee_string,
215 icalproperty_get_attendee(attendee) );
216 if (!strncasecmp(attendee_string, "MAILTO:", 7)) {
217 strcpy(attendee_string, &attendee_string[7]);
218 striplt(attendee_string);
219 recp = validate_recipients(attendee_string, NULL, 0);
221 if (!strcasecmp(recp->recp_local, CC->user.fullname)) {
222 if (me_attend) icalproperty_free(me_attend);
223 me_attend = icalproperty_new_clone(attendee);
225 free_recipients(recp);
230 icalcomponent_remove_property(vevent, attendee);
231 icalproperty_free(attendee);
234 /* We found our own address in the attendee list. */
236 /* Change the partstat from NEEDS-ACTION to ACCEPT or DECLINE */
237 icalproperty_remove_parameter(me_attend, ICAL_PARTSTAT_PARAMETER);
239 if (!strcasecmp(action, "accept")) {
240 partstat = icalparameter_new_partstat(ICAL_PARTSTAT_ACCEPTED);
242 else if (!strcasecmp(action, "decline")) {
243 partstat = icalparameter_new_partstat(ICAL_PARTSTAT_DECLINED);
245 else if (!strcasecmp(action, "tentative")) {
246 partstat = icalparameter_new_partstat(ICAL_PARTSTAT_TENTATIVE);
249 if (partstat) icalproperty_add_parameter(me_attend, partstat);
251 /* Now insert it back into the vevent. */
252 icalcomponent_add_property(vevent, me_attend);
255 /* Figure out who to send this thing to */
256 organizer = icalcomponent_get_first_property(vevent, ICAL_ORGANIZER_PROPERTY);
257 if (organizer != NULL) {
258 if (icalproperty_get_organizer(organizer)) {
259 strcpy(organizer_string,
260 icalproperty_get_organizer(organizer) );
263 if (!strncasecmp(organizer_string, "MAILTO:", 7)) {
264 strcpy(organizer_string, &organizer_string[7]);
265 striplt(organizer_string);
267 strcpy(organizer_string, "");
270 /* Extract the summary string -- we'll use it as the
271 * message subject for the reply
273 summary = icalcomponent_get_first_property(vevent, ICAL_SUMMARY_PROPERTY);
274 if (summary != NULL) {
275 if (icalproperty_get_summary(summary)) {
276 strcpy(summary_string,
277 icalproperty_get_summary(summary) );
282 /* Now generate the reply message and send it out. */
283 serialized_reply = icalcomponent_as_ical_string_r(the_reply);
284 icalcomponent_free(the_reply); /* don't need this anymore */
285 if (serialized_reply == NULL) return;
287 reply_message_text = malloc(strlen(serialized_reply) + SIZ);
288 if (reply_message_text != NULL) {
289 sprintf(reply_message_text,
290 "Content-type: text/calendar; charset=\"utf-8\"\r\n\r\n%s\r\n",
294 msg = CtdlMakeMessage(&CC->user,
295 organizer_string, /* to */
297 CC->room.QRname, 0, FMT_RFC822,
300 summary_string, /* Use summary for subject */
306 valid = validate_recipients(organizer_string, NULL, 0);
307 CtdlSubmitMsg(msg, valid, "", QP_EADDR);
308 CtdlFreeMessage(msg);
309 free_recipients(valid);
312 free(serialized_reply);
318 * Callback function for mime parser that hunts for calendar content types
319 * and turns them into calendar objects. If something is found, it is placed
320 * in ird->cal, and the caller now owns that memory and is responsible for freeing it.
322 void ical_locate_part(char *name, char *filename, char *partnum, char *disp,
323 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
324 char *cbid, void *cbuserdata) {
326 struct ical_respond_data *ird = NULL;
328 ird = (struct ical_respond_data *) cbuserdata;
330 /* desired_partnum can be set to "_HUNT_" to have it just look for
331 * the first part with a content type of text/calendar. Otherwise
332 * we have to only process the right one.
334 if (strcasecmp(ird->desired_partnum, "_HUNT_")) {
335 if (strcasecmp(partnum, ird->desired_partnum)) {
340 if ( (strcasecmp(cbtype, "text/calendar"))
341 && (strcasecmp(cbtype, "application/ics")) ) {
345 if (ird->cal != NULL) {
346 icalcomponent_free(ird->cal);
350 ird->cal = icalcomponent_new_from_string(content);
355 * Respond to a meeting request.
357 void ical_respond(long msgnum, char *partnum, char *action) {
358 struct CtdlMessage *msg = NULL;
359 struct ical_respond_data ird;
362 (strcasecmp(action, "accept"))
363 && (strcasecmp(action, "decline"))
365 cprintf("%d Action must be 'accept' or 'decline'\n",
366 ERROR + ILLEGAL_VALUE
371 msg = CtdlFetchMessage(msgnum, 1);
373 cprintf("%d Message %ld not found.\n",
374 ERROR + ILLEGAL_VALUE,
380 memset(&ird, 0, sizeof ird);
381 strcpy(ird.desired_partnum, partnum);
382 mime_parser(msg->cm_fields['M'],
384 *ical_locate_part, /* callback function */
386 (void *) &ird, /* user data */
390 /* We're done with the incoming message, because we now have a
391 * calendar object in memory.
393 CtdlFreeMessage(msg);
396 * Here is the real meat of this function. Handle the event.
398 if (ird.cal != NULL) {
399 /* Save this in the user's calendar if necessary */
400 if (!strcasecmp(action, "accept")) {
401 ical_write_to_cal(&CC->user, ird.cal);
404 /* Send a reply if necessary */
405 if (icalcomponent_get_method(ird.cal) == ICAL_METHOD_REQUEST) {
406 ical_send_a_reply(ird.cal, action);
409 /* We used to delete the invitation after handling it.
410 * We don't do that anymore, but here is the code that handled it:
411 * CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
414 /* Free the memory we allocated and return a response. */
415 icalcomponent_free(ird.cal);
417 cprintf("%d ok\n", CIT_OK);
421 cprintf("%d No calendar object found\n", ERROR + ROOM_NOT_FOUND);
425 /* should never get here */
430 * Figure out the UID of the calendar event being referred to in a
431 * REPLY object. This function is recursive.
433 void ical_learn_uid_of_reply(char *uidbuf, icalcomponent *cal) {
434 icalcomponent *subcomponent;
437 /* If this object is a REPLY, then extract the UID. */
438 if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
439 p = icalcomponent_get_first_property(cal, ICAL_UID_PROPERTY);
441 strcpy(uidbuf, icalproperty_get_comment(p));
445 /* Otherwise, recurse through any VEVENT subcomponents. We do NOT want the
446 * UID of the reply; we want the UID of the invitation being replied to.
448 for (subcomponent = icalcomponent_get_first_component(cal, ICAL_VEVENT_COMPONENT);
449 subcomponent != NULL;
450 subcomponent = icalcomponent_get_next_component(cal, ICAL_VEVENT_COMPONENT) ) {
451 ical_learn_uid_of_reply(uidbuf, subcomponent);
457 * ical_update_my_calendar_with_reply() refers to this callback function; when we
458 * locate the message containing the calendar event we're replying to, this function
459 * gets called. It basically just sticks the message number in a supplied buffer.
461 void ical_hunt_for_event_to_update(long msgnum, void *data) {
464 msgnumptr = (long *) data;
469 struct original_event_container {
474 * Callback function for mime parser that hunts for calendar content types
475 * and turns them into calendar objects (called by ical_update_my_calendar_with_reply()
476 * to fetch the object being updated)
478 void ical_locate_original_event(char *name, char *filename, char *partnum, char *disp,
479 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
480 char *cbid, void *cbuserdata) {
482 struct original_event_container *oec = NULL;
484 if ( (strcasecmp(cbtype, "text/calendar"))
485 && (strcasecmp(cbtype, "application/ics")) ) {
488 oec = (struct original_event_container *) cbuserdata;
489 if (oec->c != NULL) {
490 icalcomponent_free(oec->c);
492 oec->c = icalcomponent_new_from_string(content);
497 * Merge updated attendee information from a REPLY into an existing event.
499 void ical_merge_attendee_reply(icalcomponent *event, icalcomponent *reply) {
501 icalproperty *e_attendee, *r_attendee;
503 /* First things first. If we're not looking at a VEVENT component,
504 * recurse through subcomponents until we find one.
506 if (icalcomponent_isa(event) != ICAL_VEVENT_COMPONENT) {
507 for (c = icalcomponent_get_first_component(event, ICAL_VEVENT_COMPONENT);
509 c = icalcomponent_get_next_component(event, ICAL_VEVENT_COMPONENT) ) {
510 ical_merge_attendee_reply(c, reply);
515 /* Now do the same thing with the reply.
517 if (icalcomponent_isa(reply) != ICAL_VEVENT_COMPONENT) {
518 for (c = icalcomponent_get_first_component(reply, ICAL_VEVENT_COMPONENT);
520 c = icalcomponent_get_next_component(reply, ICAL_VEVENT_COMPONENT) ) {
521 ical_merge_attendee_reply(event, c);
526 /* Clone the reply, because we're going to rip its guts out. */
527 reply = icalcomponent_new_clone(reply);
529 /* At this point we're looking at the correct subcomponents.
530 * Iterate through the attendees looking for a match.
533 for (e_attendee = icalcomponent_get_first_property(event, ICAL_ATTENDEE_PROPERTY);
535 e_attendee = icalcomponent_get_next_property(event, ICAL_ATTENDEE_PROPERTY)) {
537 for (r_attendee = icalcomponent_get_first_property(reply, ICAL_ATTENDEE_PROPERTY);
539 r_attendee = icalcomponent_get_next_property(reply, ICAL_ATTENDEE_PROPERTY)) {
541 /* Check to see if these two attendees match...
544 icalproperty_get_attendee(e_attendee),
545 icalproperty_get_attendee(r_attendee)
547 /* ...and if they do, remove the attendee from the event
548 * and replace it with the attendee from the reply. (The
549 * reply's copy will have the same address, but an updated
552 icalcomponent_remove_property(event, e_attendee);
553 icalproperty_free(e_attendee);
554 icalcomponent_remove_property(reply, r_attendee);
555 icalcomponent_add_property(event, r_attendee);
557 /* Since we diddled both sets of attendees, we have to start
558 * the iteration over again. This will not create an infinite
559 * loop because we removed the attendee from the reply. (That's
560 * why we cloned the reply, and that's what we mean by "ripping
569 /* Free the *clone* of the reply. */
570 icalcomponent_free(reply);
577 * Handle an incoming RSVP (object with method==ICAL_METHOD_REPLY) for a
578 * calendar event. The object has already been deserialized for us; all
579 * we have to do here is hunt for the event in our calendar, merge in the
580 * updated attendee status, and save it again.
582 * This function returns 0 on success, 1 if the event was not found in the
583 * user's calendar, or 2 if an internal error occurred.
585 int ical_update_my_calendar_with_reply(icalcomponent *cal) {
587 char hold_rm[ROOMNAMELEN];
588 long msgnum_being_replaced = 0;
589 struct CtdlMessage *msg = NULL;
590 struct original_event_container oec;
591 icalcomponent *original_event;
592 char *serialized_event = NULL;
593 char roomname[ROOMNAMELEN];
594 char *message_text = NULL;
596 /* Figure out just what event it is we're dealing with */
597 strcpy(uid, "--==<< InVaLiD uId >>==--");
598 ical_learn_uid_of_reply(uid, cal);
599 CtdlLogPrintf(CTDL_DEBUG, "UID of event being replied to is <%s>\n", uid);
601 strcpy(hold_rm, CC->room.QRname); /* save current room */
603 if (getroom(&CC->room, USERCALENDARROOM) != 0) {
604 getroom(&CC->room, hold_rm);
605 CtdlLogPrintf(CTDL_CRIT, "cannot get user calendar room\n");
610 * Look in the EUID index for a message with
611 * the Citadel EUID set to the value we're looking for. Since
612 * Citadel always sets the message EUID to the iCalendar UID of
613 * the event, this will work.
615 msgnum_being_replaced = locate_message_by_euid(uid, &CC->room);
617 getroom(&CC->room, hold_rm); /* return to saved room */
619 CtdlLogPrintf(CTDL_DEBUG, "msgnum_being_replaced == %ld\n", msgnum_being_replaced);
620 if (msgnum_being_replaced == 0) {
621 return(1); /* no calendar event found */
624 /* Now we know the ID of the message containing the event being updated.
625 * We don't actually have to delete it; that'll get taken care of by the
626 * server when we save another event with the same UID. This just gives
627 * us the ability to load the event into memory so we can diddle the
630 msg = CtdlFetchMessage(msgnum_being_replaced, 1);
632 return(2); /* internal error */
635 mime_parser(msg->cm_fields['M'],
637 *ical_locate_original_event, /* callback function */
639 &oec, /* user data */
642 CtdlFreeMessage(msg);
644 original_event = oec.c;
645 if (original_event == NULL) {
646 CtdlLogPrintf(CTDL_ERR, "ERROR: Original_component is NULL.\n");
650 /* Merge the attendee's updated status into the event */
651 ical_merge_attendee_reply(original_event, cal);
654 serialized_event = icalcomponent_as_ical_string_r(original_event);
655 icalcomponent_free(original_event); /* Don't need this anymore. */
656 if (serialized_event == NULL) return(2);
658 MailboxName(roomname, sizeof roomname, &CC->user, USERCALENDARROOM);
660 message_text = malloc(strlen(serialized_event) + SIZ);
661 if (message_text != NULL) {
662 sprintf(message_text,
663 "Content-type: text/calendar; charset=\"utf-8\"\r\n\r\n%s\r\n",
667 msg = CtdlMakeMessage(&CC->user,
668 "", /* No recipient */
669 "", /* No recipient */
680 CIT_ICAL->avoid_sending_invitations = 1;
681 CtdlSubmitMsg(msg, NULL, roomname, QP_EADDR);
682 CtdlFreeMessage(msg);
683 CIT_ICAL->avoid_sending_invitations = 0;
686 free(serialized_event);
692 * Handle an incoming RSVP for an event. (This is the server subcommand part; it
693 * simply extracts the calendar object from the message, deserializes it, and
694 * passes it up to ical_update_my_calendar_with_reply() for processing.
696 void ical_handle_rsvp(long msgnum, char *partnum, char *action) {
697 struct CtdlMessage *msg = NULL;
698 struct ical_respond_data ird;
702 (strcasecmp(action, "update"))
703 && (strcasecmp(action, "ignore"))
705 cprintf("%d Action must be 'update' or 'ignore'\n",
706 ERROR + ILLEGAL_VALUE
711 msg = CtdlFetchMessage(msgnum, 1);
713 cprintf("%d Message %ld not found.\n",
714 ERROR + ILLEGAL_VALUE,
720 memset(&ird, 0, sizeof ird);
721 strcpy(ird.desired_partnum, partnum);
722 mime_parser(msg->cm_fields['M'],
724 *ical_locate_part, /* callback function */
726 (void *) &ird, /* user data */
730 /* We're done with the incoming message, because we now have a
731 * calendar object in memory.
733 CtdlFreeMessage(msg);
736 * Here is the real meat of this function. Handle the event.
738 if (ird.cal != NULL) {
739 /* Update the user's calendar if necessary */
740 if (!strcasecmp(action, "update")) {
741 ret = ical_update_my_calendar_with_reply(ird.cal);
743 cprintf("%d Your calendar has been updated with this reply.\n",
747 cprintf("%d This event does not exist in your calendar.\n",
748 ERROR + FILE_NOT_FOUND);
751 cprintf("%d An internal error occurred.\n",
752 ERROR + INTERNAL_ERROR);
756 cprintf("%d This reply has been ignored.\n", CIT_OK);
759 /* Now that we've processed this message, we don't need it
760 * anymore. So delete it. (Don't do this anymore.)
761 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
764 /* Free the memory we allocated and return a response. */
765 icalcomponent_free(ird.cal);
770 cprintf("%d No calendar object found\n", ERROR + ROOM_NOT_FOUND);
774 /* should never get here */
779 * Search for a property in both the top level and in a VEVENT subcomponent
781 icalproperty *ical_ctdl_get_subprop(
783 icalproperty_kind which_prop
788 p = icalcomponent_get_first_property(cal, which_prop);
790 c = icalcomponent_get_first_component(cal,
791 ICAL_VEVENT_COMPONENT);
793 p = icalcomponent_get_first_property(c, which_prop);
801 * Check to see if two events overlap. Returns nonzero if they do.
802 * (This function is used in both Citadel and WebCit. If you change it in
803 * one place, change it in the other. Better yet, put it in a library.)
805 int ical_ctdl_is_overlap(
806 struct icaltimetype t1start,
807 struct icaltimetype t1end,
808 struct icaltimetype t2start,
809 struct icaltimetype t2end
812 if (icaltime_is_null_time(t1start)) return(0);
813 if (icaltime_is_null_time(t2start)) return(0);
815 /* First, check for all-day events */
816 if (t1start.is_date) {
817 if (!icaltime_compare_date_only(t1start, t2start)) {
820 if (!icaltime_is_null_time(t2end)) {
821 if (!icaltime_compare_date_only(t1start, t2end)) {
827 if (t2start.is_date) {
828 if (!icaltime_compare_date_only(t2start, t1start)) {
831 if (!icaltime_is_null_time(t1end)) {
832 if (!icaltime_compare_date_only(t2start, t1end)) {
838 /* Now check for overlaps using date *and* time. */
840 /* First, bail out if either event 1 or event 2 is missing end time. */
841 if (icaltime_is_null_time(t1end)) return(0);
842 if (icaltime_is_null_time(t2end)) return(0);
844 /* If event 1 ends before event 2 starts, we're in the clear. */
845 if (icaltime_compare(t1end, t2start) <= 0) return(0);
847 /* If event 2 ends before event 1 starts, we're also ok. */
848 if (icaltime_compare(t2end, t1start) <= 0) return(0);
850 /* Otherwise, they overlap. */
857 * Phase 6 of "hunt for conflicts"
858 * called by ical_conflicts_phase5()
860 * Now both the proposed and existing events have been boiled down to start and end times.
861 * Check for overlap and output any conflicts.
863 * Returns nonzero if a conflict was reported. This allows the caller to stop iterating.
865 int ical_conflicts_phase6(struct icaltimetype t1start,
866 struct icaltimetype t1end,
867 struct icaltimetype t2start,
868 struct icaltimetype t2end,
869 long existing_msgnum,
870 char *conflict_event_uid,
871 char *conflict_event_summary,
874 int conflict_reported = 0;
878 tt = icaltime_as_timet_with_zone(t1start, t1start.zone);
879 CtdlLogPrintf(CTDL_DEBUG, "PROPOSED START: %s", ctime(&tt));
880 tt = icaltime_as_timet_with_zone(t1end, t1end.zone);
881 CtdlLogPrintf(CTDL_DEBUG, " PROPOSED END: %s", ctime(&tt));
882 tt = icaltime_as_timet_with_zone(t2start, t2start.zone);
883 CtdlLogPrintf(CTDL_DEBUG, "EXISTING START: %s", ctime(&tt));
884 tt = icaltime_as_timet_with_zone(t2end, t2end.zone);
885 CtdlLogPrintf(CTDL_DEBUG, " EXISTING END: %s", ctime(&tt));
888 /* compare and output */
890 if (ical_ctdl_is_overlap(t1start, t1end, t2start, t2end)) {
891 cprintf("%ld||%s|%s|%d|\n",
894 conflict_event_summary,
895 ( ((strlen(compare_uid)>0)
896 &&(!strcasecmp(compare_uid,
897 conflict_event_uid))) ? 1 : 0
900 conflict_reported = 1;
903 return(conflict_reported);
909 * Phase 5 of "hunt for conflicts"
910 * Called by ical_conflicts_phase4()
912 * We have the proposed event boiled down to start and end times.
913 * Now check it against an existing event.
915 void ical_conflicts_phase5(struct icaltimetype t1start,
916 struct icaltimetype t1end,
917 icalcomponent *existing_event,
918 long existing_msgnum,
921 char conflict_event_uid[SIZ];
922 char conflict_event_summary[SIZ];
923 struct icaltimetype t2start, t2end;
926 /* recur variables */
927 icalproperty *rrule = NULL;
928 struct icalrecurrencetype recur;
929 icalrecur_iterator *ritr = NULL;
930 struct icaldurationtype dur;
934 strcpy(conflict_event_uid, "");
935 strcpy(conflict_event_summary, "");
936 t2start = icaltime_null_time();
937 t2end = icaltime_null_time();
939 /* existing event stuff */
940 p = ical_ctdl_get_subprop(existing_event, ICAL_DTSTART_PROPERTY);
941 if (p == NULL) return;
942 if (p != NULL) t2start = icalproperty_get_dtstart(p);
943 if (icaltime_is_utc(t2start)) {
944 t2start.zone = icaltimezone_get_utc_timezone();
947 t2start.zone = icalcomponent_get_timezone(existing_event,
948 icalparameter_get_tzid(
949 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
953 t2start.zone = get_default_icaltimezone();
957 p = ical_ctdl_get_subprop(existing_event, ICAL_DTEND_PROPERTY);
959 t2end = icalproperty_get_dtend(p);
961 if (icaltime_is_utc(t2end)) {
962 t2end.zone = icaltimezone_get_utc_timezone();
965 t2end.zone = icalcomponent_get_timezone(existing_event,
966 icalparameter_get_tzid(
967 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
971 t2end.zone = get_default_icaltimezone();
974 dur = icaltime_subtract(t2end, t2start);
977 rrule = ical_ctdl_get_subprop(existing_event, ICAL_RRULE_PROPERTY);
979 recur = icalproperty_get_rrule(rrule);
980 ritr = icalrecur_iterator_new(recur, t2start);
984 p = ical_ctdl_get_subprop(existing_event, ICAL_UID_PROPERTY);
986 strcpy(conflict_event_uid, icalproperty_get_comment(p));
989 p = ical_ctdl_get_subprop(existing_event, ICAL_SUMMARY_PROPERTY);
991 strcpy(conflict_event_summary, icalproperty_get_comment(p));
994 if (ical_conflicts_phase6(t1start, t1end, t2start, t2end,
995 existing_msgnum, conflict_event_uid, conflict_event_summary, compare_uid))
997 num_recur = MAX_RECUR + 1; /* force it out of scope, no need to continue */
1001 t2start = icalrecur_iterator_next(ritr);
1002 if (!icaltime_is_null_time(t2end)) {
1003 const icaltimezone *hold_zone = t2end.zone;
1004 t2end = icaltime_add(t2start, dur);
1005 t2end.zone = hold_zone;
1010 if (icaltime_compare(t2start, t1end) < 0) {
1011 num_recur = MAX_RECUR + 1; /* force it out of scope */
1014 } while ( (rrule) && (!icaltime_is_null_time(t2start)) && (num_recur < MAX_RECUR) );
1015 icalrecur_iterator_free(ritr);
1022 * Phase 4 of "hunt for conflicts"
1023 * Called by ical_hunt_for_conflicts_backend()
1025 * At this point we've got it boiled down to two icalcomponent events in memory.
1026 * If they conflict, output something to the client.
1028 void ical_conflicts_phase4(icalcomponent *proposed_event,
1029 icalcomponent *existing_event,
1030 long existing_msgnum)
1032 struct icaltimetype t1start, t1end;
1033 t1start = icaltime_null_time();
1034 t1end = icaltime_null_time();
1036 char compare_uid[SIZ];
1038 /* recur variables */
1039 icalproperty *rrule = NULL;
1040 struct icalrecurrencetype recur;
1041 icalrecur_iterator *ritr = NULL;
1042 struct icaldurationtype dur;
1045 /* initialization */
1046 strcpy(compare_uid, "");
1048 /* proposed event stuff */
1050 p = ical_ctdl_get_subprop(proposed_event, ICAL_DTSTART_PROPERTY);
1051 if (p == NULL) return;
1052 if (p != NULL) t1start = icalproperty_get_dtstart(p);
1053 if (icaltime_is_utc(t1start)) {
1054 t1start.zone = icaltimezone_get_utc_timezone();
1057 t1start.zone = icalcomponent_get_timezone(proposed_event,
1058 icalparameter_get_tzid(
1059 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
1062 if (!t1start.zone) {
1063 t1start.zone = get_default_icaltimezone();
1067 p = ical_ctdl_get_subprop(proposed_event, ICAL_DTEND_PROPERTY);
1069 t1end = icalproperty_get_dtend(p);
1071 if (icaltime_is_utc(t1end)) {
1072 t1end.zone = icaltimezone_get_utc_timezone();
1075 t1end.zone = icalcomponent_get_timezone(proposed_event,
1076 icalparameter_get_tzid(
1077 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
1081 t1end.zone = get_default_icaltimezone();
1085 dur = icaltime_subtract(t1end, t1start);
1088 rrule = ical_ctdl_get_subprop(proposed_event, ICAL_RRULE_PROPERTY);
1090 recur = icalproperty_get_rrule(rrule);
1091 ritr = icalrecur_iterator_new(recur, t1start);
1094 p = ical_ctdl_get_subprop(proposed_event, ICAL_UID_PROPERTY);
1096 strcpy(compare_uid, icalproperty_get_comment(p));
1100 ical_conflicts_phase5(t1start, t1end, existing_event, existing_msgnum, compare_uid);
1103 t1start = icalrecur_iterator_next(ritr);
1104 if (!icaltime_is_null_time(t1end)) {
1105 const icaltimezone *hold_zone = t1end.zone;
1106 t1end = icaltime_add(t1start, dur);
1107 t1end.zone = hold_zone;
1112 } while ( (rrule) && (!icaltime_is_null_time(t1start)) && (num_recur < MAX_RECUR) );
1113 icalrecur_iterator_free(ritr);
1119 * Phase 3 of "hunt for conflicts"
1120 * Called by ical_hunt_for_conflicts()
1122 void ical_hunt_for_conflicts_backend(long msgnum, void *data) {
1123 icalcomponent *proposed_event;
1124 struct CtdlMessage *msg = NULL;
1125 struct ical_respond_data ird;
1127 proposed_event = (icalcomponent *)data;
1129 msg = CtdlFetchMessage(msgnum, 1);
1130 if (msg == NULL) return;
1131 memset(&ird, 0, sizeof ird);
1132 strcpy(ird.desired_partnum, "_HUNT_");
1133 mime_parser(msg->cm_fields['M'],
1135 *ical_locate_part, /* callback function */
1137 (void *) &ird, /* user data */
1140 CtdlFreeMessage(msg);
1142 if (ird.cal == NULL) return;
1144 ical_conflicts_phase4(proposed_event, ird.cal, msgnum);
1145 icalcomponent_free(ird.cal);
1151 * Phase 2 of "hunt for conflicts" operation.
1152 * At this point we have a calendar object which represents the VEVENT that
1153 * is proposed for addition to the calendar. Now hunt through the user's
1154 * calendar room, and output zero or more existing VEVENTs which conflict
1157 void ical_hunt_for_conflicts(icalcomponent *cal) {
1158 char hold_rm[ROOMNAMELEN];
1160 strcpy(hold_rm, CC->room.QRname); /* save current room */
1162 if (getroom(&CC->room, USERCALENDARROOM) != 0) {
1163 getroom(&CC->room, hold_rm);
1164 cprintf("%d You do not have a calendar.\n", ERROR + ROOM_NOT_FOUND);
1168 cprintf("%d Conflicting events:\n", LISTING_FOLLOWS);
1170 CtdlForEachMessage(MSGS_ALL, 0, NULL,
1173 ical_hunt_for_conflicts_backend,
1178 getroom(&CC->room, hold_rm); /* return to saved room */
1185 * Hunt for conflicts (Phase 1 -- retrieve the object and call Phase 2)
1187 void ical_conflicts(long msgnum, char *partnum) {
1188 struct CtdlMessage *msg = NULL;
1189 struct ical_respond_data ird;
1191 msg = CtdlFetchMessage(msgnum, 1);
1193 cprintf("%d Message %ld not found\n",
1194 ERROR + ILLEGAL_VALUE,
1200 memset(&ird, 0, sizeof ird);
1201 strcpy(ird.desired_partnum, partnum);
1202 mime_parser(msg->cm_fields['M'],
1204 *ical_locate_part, /* callback function */
1206 (void *) &ird, /* user data */
1210 CtdlFreeMessage(msg);
1212 if (ird.cal != NULL) {
1213 ical_hunt_for_conflicts(ird.cal);
1214 icalcomponent_free(ird.cal);
1218 cprintf("%d No calendar object found\n", ERROR + ROOM_NOT_FOUND);
1224 * Look for busy time in a VEVENT and add it to the supplied VFREEBUSY.
1226 * fb The VFREEBUSY component to which we are appending
1227 * top_level_cal The top-level VCALENDAR component which contains a VEVENT to be added
1229 void ical_add_to_freebusy(icalcomponent *fb, icalcomponent *top_level_cal) {
1233 struct icalperiodtype this_event_period = icalperiodtype_null_period();
1234 icaltimetype dtstart = icaltime_null_time();
1235 icaltimetype dtend = icaltime_null_time();
1237 /* recur variables */
1238 icalproperty *rrule = NULL;
1239 struct icalrecurrencetype recur;
1240 icalrecur_iterator *ritr = NULL;
1241 struct icaldurationtype dur;
1244 if (!top_level_cal) return;
1246 /* Find the VEVENT component containing an event */
1247 cal = icalcomponent_get_first_component(top_level_cal, ICAL_VEVENT_COMPONENT);
1250 /* If this event is not opaque, the user isn't publishing it as
1251 * busy time, so don't bother doing anything else.
1253 p = icalcomponent_get_first_property(cal, ICAL_TRANSP_PROPERTY);
1255 v = icalproperty_get_value(p);
1257 if (icalvalue_get_transp(v) != ICAL_TRANSP_OPAQUE) {
1264 * Now begin calculating the event start and end times.
1266 p = icalcomponent_get_first_property(cal, ICAL_DTSTART_PROPERTY);
1268 dtstart = icalproperty_get_dtstart(p);
1270 if (icaltime_is_utc(dtstart)) {
1271 dtstart.zone = icaltimezone_get_utc_timezone();
1274 dtstart.zone = icalcomponent_get_timezone(top_level_cal,
1275 icalparameter_get_tzid(
1276 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
1279 if (!dtstart.zone) {
1280 dtstart.zone = get_default_icaltimezone();
1283 // FIXME do more here
1285 dtend = icalcomponent_get_dtend(cal);
1286 if (!icaltime_is_null_time(dtend)) {
1287 dur = icaltime_subtract(dtend, dtstart);
1290 /* Is a recurrence specified? If so, get ready to process it... */
1291 rrule = ical_ctdl_get_subprop(cal, ICAL_RRULE_PROPERTY);
1293 recur = icalproperty_get_rrule(rrule);
1294 ritr = icalrecur_iterator_new(recur, dtstart);
1300 // FIXME add timezone conversion, we are currently outputting floating times
1302 CtdlLogPrintf(CTDL_DEBUG, "Start, utc=%d, %s\n",
1304 icaltime_as_ical_string(dtstart)
1309 /* Convert the DTSTART and DTEND properties to an icalperiod. */
1310 this_event_period.start = dtstart;
1312 if (!icaltime_is_null_time(dtend)) {
1313 this_event_period.end = dtend;
1317 icalcomponent_add_property(fb, icalproperty_new_freebusy(this_event_period));
1319 /* Make sure the DTSTART property of the freebusy *list* is set to
1320 * the DTSTART property of the *earliest event*.
1322 p = icalcomponent_get_first_property(fb, ICAL_DTSTART_PROPERTY);
1324 icalcomponent_set_dtstart(fb, dtstart);
1327 if (icaltime_compare(dtstart, icalcomponent_get_dtstart(fb)) < 0) {
1328 icalcomponent_set_dtstart(fb, dtstart);
1332 /* Make sure the DTEND property of the freebusy *list* is set to
1333 * the DTEND property of the *latest event*.
1335 p = icalcomponent_get_first_property(fb, ICAL_DTEND_PROPERTY);
1337 icalcomponent_set_dtend(fb, dtend);
1340 if (icaltime_compare(dtend, icalcomponent_get_dtend(fb)) > 0) {
1341 icalcomponent_set_dtend(fb, dtend);
1346 dtstart = icalrecur_iterator_next(ritr);
1347 if (!icaltime_is_null_time(dtend)) {
1348 dtend = icaltime_add(dtstart, dur);
1353 } while ( (rrule) && (!icaltime_is_null_time(dtstart)) && (num_recur < MAX_RECUR) ) ;
1354 icalrecur_iterator_free(ritr);
1360 * Backend for ical_freebusy()
1362 * This function simply loads the messages in the user's calendar room,
1363 * which contain VEVENTs, then strips them of all non-freebusy data, and
1364 * adds them to the supplied VCALENDAR.
1367 void ical_freebusy_backend(long msgnum, void *data) {
1369 struct CtdlMessage *msg = NULL;
1370 struct ical_respond_data ird;
1372 fb = (icalcomponent *)data; /* User-supplied data will be the VFREEBUSY component */
1374 msg = CtdlFetchMessage(msgnum, 1);
1375 if (msg == NULL) return;
1376 memset(&ird, 0, sizeof ird);
1377 strcpy(ird.desired_partnum, "_HUNT_");
1378 mime_parser(msg->cm_fields['M'],
1380 *ical_locate_part, /* callback function */
1382 (void *) &ird, /* user data */
1385 CtdlFreeMessage(msg);
1388 ical_add_to_freebusy(fb, ird.cal); /* Add VEVENT times to VFREEBUSY */
1389 icalcomponent_free(ird.cal);
1396 * Grab another user's free/busy times
1398 void ical_freebusy(char *who) {
1399 struct ctdluser usbuf;
1400 char calendar_room_name[ROOMNAMELEN];
1401 char hold_rm[ROOMNAMELEN];
1402 char *serialized_request = NULL;
1403 icalcomponent *encaps = NULL;
1404 icalcomponent *fb = NULL;
1405 int found_user = (-1);
1406 struct recptypes *recp = NULL;
1411 int config_lines = 0;
1413 /* First try an exact match. */
1414 found_user = getuser(&usbuf, who);
1416 /* If not found, try it as an unqualified email address. */
1417 if (found_user != 0) {
1419 recp = validate_recipients(buf, NULL, 0);
1420 CtdlLogPrintf(CTDL_DEBUG, "Trying <%s>\n", buf);
1422 if (recp->num_local == 1) {
1423 found_user = getuser(&usbuf, recp->recp_local);
1425 free_recipients(recp);
1429 /* If still not found, try it as an address qualified with the
1430 * primary FQDN of this Citadel node.
1432 if (found_user != 0) {
1433 snprintf(buf, sizeof buf, "%s@%s", who, config.c_fqdn);
1434 CtdlLogPrintf(CTDL_DEBUG, "Trying <%s>\n", buf);
1435 recp = validate_recipients(buf, NULL, 0);
1437 if (recp->num_local == 1) {
1438 found_user = getuser(&usbuf, recp->recp_local);
1440 free_recipients(recp);
1444 /* Still not found? Try qualifying it with every domain we
1445 * might have addresses in.
1447 if (found_user != 0) {
1448 config_lines = num_tokens(inetcfg, '\n');
1449 for (i=0; ((i < config_lines) && (found_user != 0)); ++i) {
1450 extract_token(buf, inetcfg, i, '\n', sizeof buf);
1451 extract_token(host, buf, 0, '|', sizeof host);
1452 extract_token(type, buf, 1, '|', sizeof type);
1454 if ( (!strcasecmp(type, "localhost"))
1455 || (!strcasecmp(type, "directory")) ) {
1456 snprintf(buf, sizeof buf, "%s@%s", who, host);
1457 CtdlLogPrintf(CTDL_DEBUG, "Trying <%s>\n", buf);
1458 recp = validate_recipients(buf, NULL, 0);
1460 if (recp->num_local == 1) {
1461 found_user = getuser(&usbuf, recp->recp_local);
1463 free_recipients(recp);
1469 if (found_user != 0) {
1470 cprintf("%d No such user.\n", ERROR + NO_SUCH_USER);
1474 MailboxName(calendar_room_name, sizeof calendar_room_name,
1475 &usbuf, USERCALENDARROOM);
1477 strcpy(hold_rm, CC->room.QRname); /* save current room */
1479 if (getroom(&CC->room, calendar_room_name) != 0) {
1480 cprintf("%d Cannot open calendar\n", ERROR + ROOM_NOT_FOUND);
1481 getroom(&CC->room, hold_rm);
1485 /* Create a VFREEBUSY subcomponent */
1486 CtdlLogPrintf(CTDL_DEBUG, "Creating VFREEBUSY component\n");
1487 fb = icalcomponent_new_vfreebusy();
1489 cprintf("%d Internal error: cannot allocate memory.\n",
1490 ERROR + INTERNAL_ERROR);
1491 getroom(&CC->room, hold_rm);
1495 /* Set the method to PUBLISH */
1496 icalcomponent_set_method(fb, ICAL_METHOD_PUBLISH);
1498 /* Set the DTSTAMP to right now. */
1499 icalcomponent_set_dtstamp(fb, icaltime_from_timet(time(NULL), 0));
1501 /* Add the user's email address as ORGANIZER */
1502 sprintf(buf, "MAILTO:%s", who);
1503 if (strchr(buf, '@') == NULL) {
1505 strcat(buf, config.c_fqdn);
1507 for (i=0; buf[i]; ++i) {
1508 if (buf[i]==' ') buf[i] = '_';
1510 icalcomponent_add_property(fb, icalproperty_new_organizer(buf));
1512 /* Add busy time from events */
1513 CtdlLogPrintf(CTDL_DEBUG, "Adding busy time from events\n");
1514 CtdlForEachMessage(MSGS_ALL, 0, NULL, NULL, NULL, ical_freebusy_backend, (void *)fb );
1516 /* If values for DTSTART and DTEND are still not present, set them
1517 * to yesterday and tomorrow as default values.
1519 if (icalcomponent_get_first_property(fb, ICAL_DTSTART_PROPERTY) == NULL) {
1520 icalcomponent_set_dtstart(fb, icaltime_from_timet(time(NULL)-86400L, 0));
1522 if (icalcomponent_get_first_property(fb, ICAL_DTEND_PROPERTY) == NULL) {
1523 icalcomponent_set_dtend(fb, icaltime_from_timet(time(NULL)+86400L, 0));
1526 /* Put the freebusy component into the calendar component */
1527 CtdlLogPrintf(CTDL_DEBUG, "Encapsulating\n");
1528 encaps = ical_encapsulate_subcomponent(fb);
1529 if (encaps == NULL) {
1530 icalcomponent_free(fb);
1531 cprintf("%d Internal error: cannot allocate memory.\n",
1532 ERROR + INTERNAL_ERROR);
1533 getroom(&CC->room, hold_rm);
1537 /* Set the method to PUBLISH */
1538 CtdlLogPrintf(CTDL_DEBUG, "Setting method\n");
1539 icalcomponent_set_method(encaps, ICAL_METHOD_PUBLISH);
1542 CtdlLogPrintf(CTDL_DEBUG, "Serializing\n");
1543 serialized_request = icalcomponent_as_ical_string_r(encaps);
1544 icalcomponent_free(encaps); /* Don't need this anymore. */
1546 cprintf("%d Free/busy for %s\n", LISTING_FOLLOWS, usbuf.fullname);
1547 if (serialized_request != NULL) {
1548 client_write(serialized_request, strlen(serialized_request));
1549 free(serialized_request);
1553 /* Go back to the room from which we came... */
1554 getroom(&CC->room, hold_rm);
1560 * Backend for ical_getics()
1562 * This is a ForEachMessage() callback function that searches the current room
1563 * for calendar events and adds them each into one big calendar component.
1565 void ical_getics_backend(long msgnum, void *data) {
1566 icalcomponent *encaps, *c;
1567 struct CtdlMessage *msg = NULL;
1568 struct ical_respond_data ird;
1570 encaps = (icalcomponent *)data;
1571 if (encaps == NULL) return;
1573 /* Look for the calendar event... */
1575 msg = CtdlFetchMessage(msgnum, 1);
1576 if (msg == NULL) return;
1577 memset(&ird, 0, sizeof ird);
1578 strcpy(ird.desired_partnum, "_HUNT_");
1579 mime_parser(msg->cm_fields['M'],
1581 *ical_locate_part, /* callback function */
1583 (void *) &ird, /* user data */
1586 CtdlFreeMessage(msg);
1588 if (ird.cal == NULL) return;
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".
1595 /* If the top-level component is *not* a VCALENDAR, we can drop it right
1596 * in. This will almost never happen.
1598 if (icalcomponent_isa(ird.cal) != ICAL_VCALENDAR_COMPONENT) {
1599 icalcomponent_add_component(encaps, ird.cal);
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.
1606 for (c = icalcomponent_get_first_component(ird.cal, ICAL_ANY_COMPONENT);
1608 c = icalcomponent_get_next_component(ird.cal, ICAL_ANY_COMPONENT)) {
1610 /* For VTIMEZONE components, suppress duplicates of the same tzid */
1612 if (icalcomponent_isa(c) == ICAL_VTIMEZONE_COMPONENT) {
1613 icalproperty *p = icalcomponent_get_first_property(c, ICAL_TZID_PROPERTY);
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));
1623 /* All other types of components can go in verbatim */
1625 icalcomponent_add_component(encaps, icalcomponent_new_clone(c));
1628 icalcomponent_free(ird.cal);
1635 * Retrieve all of the calendar items in the current room, and output them
1636 * as a single icalendar object.
1638 void ical_getics(void)
1640 icalcomponent *encaps = NULL;
1643 if ( (CC->room.QRdefaultview != VIEW_CALENDAR)
1644 &&(CC->room.QRdefaultview != VIEW_TASKS) ) {
1645 cprintf("%d Not a calendar room\n", ERROR+NOT_HERE);
1646 return; /* Not an iCalendar-centric room */
1649 encaps = icalcomponent_new_vcalendar();
1650 if (encaps == NULL) {
1651 CtdlLogPrintf(CTDL_DEBUG, "ERROR: could not allocate component!\n");
1652 cprintf("%d Could not allocate memory\n", ERROR+INTERNAL_ERROR);
1656 cprintf("%d one big calendar\n", LISTING_FOLLOWS);
1658 /* Set the Product ID */
1659 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
1661 /* Set the Version Number */
1662 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
1664 /* Set the method to PUBLISH */
1665 icalcomponent_set_method(encaps, ICAL_METHOD_PUBLISH);
1667 /* Now go through the room encapsulating all calendar items. */
1668 CtdlForEachMessage(MSGS_ALL, 0, NULL,
1671 ical_getics_backend,
1675 ser = icalcomponent_as_ical_string_r(encaps);
1676 icalcomponent_free(encaps); /* Don't need this anymore. */
1677 client_write(ser, strlen(ser));
1684 * Helper callback function for ical_putics() to discover which TZID's we need.
1685 * Simply put the tzid name string into a hash table. After the callbacks are
1686 * done we'll go through them and attach the ones that we have.
1688 void ical_putics_grabtzids(icalparameter *param, void *data)
1690 const char *tzid = icalparameter_get_tzid(param);
1691 HashList *keys = (HashList *) data;
1693 if ( (keys) && (tzid) && (!IsEmptyStr(tzid)) ) {
1694 Put(keys, tzid, strlen(tzid), strdup(tzid), generic_free_handler);
1700 * Delete all of the calendar items in the current room, and replace them
1701 * with calendar items from a client-supplied data stream.
1703 void ical_putics(void)
1705 char *calstream = NULL;
1708 icalcomponent *encaps = NULL;
1709 HashList *tzidlist = NULL;
1715 /* Only allow this operation if we're in a room containing a calendar or tasks view */
1716 if ( (CC->room.QRdefaultview != VIEW_CALENDAR)
1717 &&(CC->room.QRdefaultview != VIEW_TASKS) ) {
1718 cprintf("%d Not a calendar room\n", ERROR+NOT_HERE);
1722 /* Only allow this operation if we have permission to overwrite the existing calendar */
1723 if (!CtdlDoIHavePermissionToDeleteMessagesFromThisRoom()) {
1724 cprintf("%d Permission denied.\n", ERROR+HIGHER_ACCESS_REQUIRED);
1728 cprintf("%d Transmit data now\n", SEND_LISTING);
1729 calstream = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
1730 if (calstream == NULL) {
1734 cal = icalcomponent_new_from_string(calstream);
1737 /* We got our data stream -- now do something with it. */
1739 /* Delete the existing messages in the room, because we are overwriting
1740 * the entire calendar with an entire new (or updated) calendar.
1741 * (Careful: this opens an S_ROOMS critical section!)
1743 CtdlDeleteMessages(CC->room.QRname, NULL, 0, "");
1745 /* If the top-level component is *not* a VCALENDAR, we can drop it right
1746 * in. This will almost never happen.
1748 if (icalcomponent_isa(cal) != ICAL_VCALENDAR_COMPONENT) {
1749 ical_write_to_cal(NULL, cal);
1752 * In the more likely event that we're looking at a VCALENDAR with the VEVENT
1753 * and other components encapsulated inside, we have to extract them.
1756 for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
1758 c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
1760 /* Non-VTIMEZONE components each get written as individual messages.
1761 * But we also need to attach the relevant VTIMEZONE components to them.
1763 if ( (icalcomponent_isa(c) != ICAL_VTIMEZONE_COMPONENT)
1764 && (encaps = icalcomponent_new_vcalendar()) ) {
1765 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
1766 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
1767 icalcomponent_set_method(encaps, ICAL_METHOD_PUBLISH);
1769 /* Attach any needed timezones here */
1770 tzidlist = NewHash(1, NULL);
1772 icalcomponent_foreach_tzid(c, ical_putics_grabtzids, tzidlist);
1774 HashPos = GetNewHashPos(tzidlist, 0);
1776 while (GetNextHashPos(tzidlist, HashPos, &len, &Key, &Value)) {
1777 CtdlLogPrintf(CTDL_DEBUG, "Attaching timezone '%s'\n", Value);
1778 icaltimezone *t = NULL;
1780 /* First look for a timezone attached to the original calendar */
1781 t = icalcomponent_get_timezone(cal, Value);
1783 /* Try built-in tzdata if the right one wasn't attached */
1785 t = icaltimezone_get_builtin_timezone(Value);
1788 /* I've got a valid timezone to attach. */
1790 icalcomponent_add_component(encaps,
1791 icalcomponent_new_clone(
1792 icaltimezone_get_component(t)
1798 DeleteHashPos(&HashPos);
1799 DeleteHash(&tzidlist);
1801 /* Now attach the component itself (usually a VEVENT or VTODO) */
1802 icalcomponent_add_component(encaps, icalcomponent_new_clone(c));
1804 /* Write it to the message store */
1805 ical_write_to_cal(NULL, encaps);
1806 icalcomponent_free(encaps);
1811 icalcomponent_free(cal);
1816 * All Citadel calendar commands from the client come through here.
1818 void cmd_ical(char *argbuf)
1826 extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1828 /* Allow "test" and "freebusy" subcommands without logging in. */
1830 if (!strcasecmp(subcmd, "test")) {
1831 cprintf("%d This server supports calendaring\n", CIT_OK);
1835 if (!strcasecmp(subcmd, "freebusy")) {
1836 extract_token(who, argbuf, 1, '|', sizeof who);
1841 if (!strcasecmp(subcmd, "sgi")) {
1842 CIT_ICAL->server_generated_invitations =
1843 (extract_int(argbuf, 1) ? 1 : 0) ;
1845 CIT_OK, CIT_ICAL->server_generated_invitations);
1849 if (CtdlAccessCheck(ac_logged_in)) return;
1851 if (!strcasecmp(subcmd, "respond")) {
1852 msgnum = extract_long(argbuf, 1);
1853 extract_token(partnum, argbuf, 2, '|', sizeof partnum);
1854 extract_token(action, argbuf, 3, '|', sizeof action);
1855 ical_respond(msgnum, partnum, action);
1859 if (!strcasecmp(subcmd, "handle_rsvp")) {
1860 msgnum = extract_long(argbuf, 1);
1861 extract_token(partnum, argbuf, 2, '|', sizeof partnum);
1862 extract_token(action, argbuf, 3, '|', sizeof action);
1863 ical_handle_rsvp(msgnum, partnum, action);
1867 if (!strcasecmp(subcmd, "conflicts")) {
1868 msgnum = extract_long(argbuf, 1);
1869 extract_token(partnum, argbuf, 2, '|', sizeof partnum);
1870 ical_conflicts(msgnum, partnum);
1874 if (!strcasecmp(subcmd, "getics")) {
1879 if (!strcasecmp(subcmd, "putics")) {
1884 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1890 * We don't know if the calendar room exists so we just create it at login
1892 void ical_create_room(void)
1897 /* Create the calendar room if it doesn't already exist */
1898 create_room(USERCALENDARROOM, 4, "", 0, 1, 0, VIEW_CALENDAR);
1900 /* Set expiration policy to manual; otherwise objects will be lost! */
1901 if (lgetroom(&qr, USERCALENDARROOM)) {
1902 CtdlLogPrintf(CTDL_CRIT, "Couldn't get the user calendar room!\n");
1905 qr.QRep.expire_mode = EXPIRE_MANUAL;
1906 qr.QRdefaultview = VIEW_CALENDAR; /* 3 = calendar view */
1909 /* Set the view to a calendar view */
1910 CtdlGetRelationship(&vbuf, &CC->user, &qr);
1911 vbuf.v_view = VIEW_CALENDAR;
1912 CtdlSetRelationship(&vbuf, &CC->user, &qr);
1914 /* Create the tasks list room if it doesn't already exist */
1915 create_room(USERTASKSROOM, 4, "", 0, 1, 0, VIEW_TASKS);
1917 /* Set expiration policy to manual; otherwise objects will be lost! */
1918 if (lgetroom(&qr, USERTASKSROOM)) {
1919 CtdlLogPrintf(CTDL_CRIT, "Couldn't get the user calendar room!\n");
1922 qr.QRep.expire_mode = EXPIRE_MANUAL;
1923 qr.QRdefaultview = VIEW_TASKS;
1926 /* Set the view to a task list view */
1927 CtdlGetRelationship(&vbuf, &CC->user, &qr);
1928 vbuf.v_view = VIEW_TASKS;
1929 CtdlSetRelationship(&vbuf, &CC->user, &qr);
1931 /* Create the notes room if it doesn't already exist */
1932 create_room(USERNOTESROOM, 4, "", 0, 1, 0, VIEW_NOTES);
1934 /* Set expiration policy to manual; otherwise objects will be lost! */
1935 if (lgetroom(&qr, USERNOTESROOM)) {
1936 CtdlLogPrintf(CTDL_CRIT, "Couldn't get the user calendar room!\n");
1939 qr.QRep.expire_mode = EXPIRE_MANUAL;
1940 qr.QRdefaultview = VIEW_NOTES;
1943 /* Set the view to a notes view */
1944 CtdlGetRelationship(&vbuf, &CC->user, &qr);
1945 vbuf.v_view = VIEW_NOTES;
1946 CtdlSetRelationship(&vbuf, &CC->user, &qr);
1953 * ical_send_out_invitations() is called by ical_saving_vevent() when it finds a VEVENT.
1955 * top_level_cal is the highest available level calendar object.
1956 * cal is the subcomponent containing the VEVENT.
1958 * Note: if you change the encapsulation code here, change it in WebCit's ical_encapsulate_subcomponent()
1960 void ical_send_out_invitations(icalcomponent *top_level_cal, icalcomponent *cal) {
1961 icalcomponent *the_request = NULL;
1962 char *serialized_request = NULL;
1963 icalcomponent *encaps = NULL;
1964 char *request_message_text = NULL;
1965 struct CtdlMessage *msg = NULL;
1966 struct recptypes *valid = NULL;
1967 char attendees_string[SIZ];
1968 int num_attendees = 0;
1969 char this_attendee[256];
1970 icalproperty *attendee = NULL;
1971 char summary_string[SIZ];
1972 icalproperty *summary = NULL;
1975 struct icaltimetype t;
1976 icaltimezone *attached_zones[5] = { NULL, NULL, NULL, NULL, NULL };
1979 int num_zones_attached = 0;
1980 int zone_already_attached;
1983 CtdlLogPrintf(CTDL_ERR, "ERROR: trying to reply to NULL event?\n");
1988 /* If this is a VCALENDAR component, look for a VEVENT subcomponent. */
1989 if (icalcomponent_isa(cal) == ICAL_VCALENDAR_COMPONENT) {
1990 ical_send_out_invitations(top_level_cal,
1991 icalcomponent_get_first_component(
1992 cal, ICAL_VEVENT_COMPONENT
1998 /* Clone the event */
1999 the_request = icalcomponent_new_clone(cal);
2000 if (the_request == NULL) {
2001 CtdlLogPrintf(CTDL_ERR, "ERROR: cannot clone calendar object\n");
2005 /* Extract the summary string -- we'll use it as the
2006 * message subject for the request
2008 strcpy(summary_string, "Meeting request");
2009 summary = icalcomponent_get_first_property(the_request, ICAL_SUMMARY_PROPERTY);
2010 if (summary != NULL) {
2011 if (icalproperty_get_summary(summary)) {
2012 strcpy(summary_string,
2013 icalproperty_get_summary(summary) );
2017 /* Determine who the recipients of this message are (the attendees) */
2018 strcpy(attendees_string, "");
2019 for (attendee = icalcomponent_get_first_property(the_request, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(the_request, ICAL_ATTENDEE_PROPERTY)) {
2020 if (icalproperty_get_attendee(attendee)) {
2021 safestrncpy(this_attendee, icalproperty_get_attendee(attendee), sizeof this_attendee);
2022 if (!strncasecmp(this_attendee, "MAILTO:", 7)) {
2023 strcpy(this_attendee, &this_attendee[7]);
2025 if (!CtdlIsMe(this_attendee, sizeof this_attendee)) { /* don't send an invitation to myself! */
2026 snprintf(&attendees_string[strlen(attendees_string)],
2027 sizeof(attendees_string) - strlen(attendees_string),
2037 CtdlLogPrintf(CTDL_DEBUG, "<%d> attendees: <%s>\n", num_attendees, attendees_string);
2039 /* If there are no attendees, there are no invitations to send, so...
2040 * don't bother putting one together! Punch out, Maverick!
2042 if (num_attendees == 0) {
2043 icalcomponent_free(the_request);
2047 /* Encapsulate the VEVENT component into a complete VCALENDAR */
2048 encaps = icalcomponent_new_vcalendar();
2049 if (encaps == NULL) {
2050 CtdlLogPrintf(CTDL_DEBUG, "ERROR: could not allocate component!\n");
2051 icalcomponent_free(the_request);
2055 /* Set the Product ID */
2056 icalcomponent_add_property(encaps, icalproperty_new_prodid(PRODID));
2058 /* Set the Version Number */
2059 icalcomponent_add_property(encaps, icalproperty_new_version("2.0"));
2061 /* Set the method to REQUEST */
2062 icalcomponent_set_method(encaps, ICAL_METHOD_REQUEST);
2064 /* Look for properties containing timezone parameters, to see if we need to attach VTIMEZONEs */
2065 for (p = icalcomponent_get_first_property(the_request, ICAL_ANY_PROPERTY);
2067 p = icalcomponent_get_next_property(the_request, ICAL_ANY_PROPERTY))
2069 if ( (icalproperty_isa(p) == ICAL_COMPLETED_PROPERTY)
2070 || (icalproperty_isa(p) == ICAL_CREATED_PROPERTY)
2071 || (icalproperty_isa(p) == ICAL_DATEMAX_PROPERTY)
2072 || (icalproperty_isa(p) == ICAL_DATEMIN_PROPERTY)
2073 || (icalproperty_isa(p) == ICAL_DTEND_PROPERTY)
2074 || (icalproperty_isa(p) == ICAL_DTSTAMP_PROPERTY)
2075 || (icalproperty_isa(p) == ICAL_DTSTART_PROPERTY)
2076 || (icalproperty_isa(p) == ICAL_DUE_PROPERTY)
2077 || (icalproperty_isa(p) == ICAL_EXDATE_PROPERTY)
2078 || (icalproperty_isa(p) == ICAL_LASTMODIFIED_PROPERTY)
2079 || (icalproperty_isa(p) == ICAL_MAXDATE_PROPERTY)
2080 || (icalproperty_isa(p) == ICAL_MINDATE_PROPERTY)
2081 || (icalproperty_isa(p) == ICAL_RECURRENCEID_PROPERTY)
2083 t = icalproperty_get_dtstart(p); // it's safe to use dtstart for all of them
2084 CtdlLogPrintf(CTDL_DEBUG, "Found an icaltimetype: %s\n",
2085 icaltime_as_ical_string(t)
2088 /* First see if there's a timezone attached to the data structure itself */
2089 if (icaltime_is_utc(t)) {
2090 z = icaltimezone_get_utc_timezone();
2093 z = icaltime_get_timezone(t);
2095 if (z) CtdlLogPrintf(CTDL_DEBUG, "Timezone is present in data structure\n");
2097 /* If not, try to determine the tzid from the parameter using attached zones */
2099 z = icalcomponent_get_timezone(top_level_cal,
2100 icalparameter_get_tzid(
2101 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
2104 if (z) CtdlLogPrintf(CTDL_DEBUG, "Timezone was found in attached zones\n");
2107 /* Still no good? Try our internal database */
2109 z = icaltimezone_get_builtin_timezone_from_tzid(
2110 icalparameter_get_tzid(
2111 icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
2114 if (z) CtdlLogPrintf(CTDL_DEBUG, "Timezone was found in internal db\n");
2118 CtdlLogPrintf(CTDL_DEBUG, "Have valid timezone, need to attach it.\n");
2120 zone_already_attached = 0;
2121 for (i=0; i<5; ++i) {
2122 if (z == attached_zones[i]) {
2123 ++zone_already_attached;
2124 CtdlLogPrintf(CTDL_DEBUG, "zone already attached!!\n");
2127 if ((!zone_already_attached) && (num_zones_attached < 5)) {
2128 CtdlLogPrintf(CTDL_DEBUG, "attach zone %d\n", num_zones_attached);
2129 attached_zones[num_zones_attached++] = z;
2132 icalproperty_set_parameter(p,
2133 icalparameter_new_tzid(icaltimezone_get_tzid(z))
2139 /* Encapsulate any timezones we need */
2140 if (num_zones_attached > 0) for (i=0; i<num_zones_attached; ++i) {
2142 zc = icalcomponent_new_clone(icaltimezone_get_component(attached_zones[i]));
2143 icalcomponent_add_component(encaps, zc);
2146 /* Here we go: encapsulate the VEVENT into the VCALENDAR. We now no longer
2147 * are responsible for "the_request"'s memory -- it will be freed
2148 * when we free "encaps".
2150 icalcomponent_add_component(encaps, the_request);
2153 serialized_request = icalcomponent_as_ical_string_r(encaps);
2154 icalcomponent_free(encaps); /* Don't need this anymore. */
2155 if (serialized_request == NULL) return;
2157 CtdlLogPrintf(CTDL_DEBUG, "SENDING INVITATIONS:\n%s\n", serialized_request);
2159 reqsize = strlen(serialized_request) + SIZ;
2160 request_message_text = malloc(reqsize);
2161 if (request_message_text != NULL) {
2162 snprintf(request_message_text, reqsize,
2163 "Content-type: text/calendar\r\n\r\n%s\r\n",
2167 msg = CtdlMakeMessage(&CC->user,
2168 "", /* No single recipient here */
2169 "", /* No single recipient here */
2170 CC->room.QRname, 0, FMT_RFC822,
2173 summary_string, /* Use summary for subject */
2175 request_message_text,
2179 valid = validate_recipients(attendees_string, NULL, 0);
2180 CtdlSubmitMsg(msg, valid, "", QP_EADDR);
2181 CtdlFreeMessage(msg);
2182 free_recipients(valid);
2185 free(serialized_request);
2190 * When a calendar object is being saved, determine whether it's a VEVENT
2191 * and the user saving it is the organizer. If so, send out invitations
2192 * to any listed attendees.
2194 * This function is recursive. The caller can simply supply the same object
2195 * as both arguments. When it recurses it will alter the second argument
2196 * while holding on to the top level object. This allows us to go back and
2197 * grab things like time zones which might be attached.
2200 void ical_saving_vevent(icalcomponent *top_level_cal, icalcomponent *cal) {
2202 icalproperty *organizer = NULL;
2203 char organizer_string[SIZ];
2205 CtdlLogPrintf(CTDL_DEBUG, "ical_saving_vevent() has been called!\n");
2207 /* Don't send out invitations unless the client wants us to. */
2208 if (CIT_ICAL->server_generated_invitations == 0) {
2212 /* Don't send out invitations if we've been asked not to. */
2213 if (CIT_ICAL->avoid_sending_invitations > 0) {
2217 strcpy(organizer_string, "");
2219 * The VEVENT subcomponent is the one we're interested in.
2220 * Send out invitations if, and only if, this user is the Organizer.
2222 if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
2223 organizer = icalcomponent_get_first_property(cal, ICAL_ORGANIZER_PROPERTY);
2224 if (organizer != NULL) {
2225 if (icalproperty_get_organizer(organizer)) {
2226 strcpy(organizer_string,
2227 icalproperty_get_organizer(organizer));
2230 if (!strncasecmp(organizer_string, "MAILTO:", 7)) {
2231 strcpy(organizer_string, &organizer_string[7]);
2232 striplt(organizer_string);
2234 * If the user saving the event is listed as the
2235 * organizer, then send out invitations.
2237 if (CtdlIsMe(organizer_string, sizeof organizer_string)) {
2238 ical_send_out_invitations(top_level_cal, cal);
2243 /* If the component has subcomponents, recurse through them. */
2244 for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
2246 c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
2247 /* Recursively process subcomponent */
2248 ical_saving_vevent(top_level_cal, c);
2256 * Back end for ical_obj_beforesave()
2257 * This hunts for the UID of the calendar event (becomes Citadel msg EUID),
2258 * the summary of the event (becomes message subject),
2259 * and the start time (becomes message date/time).
2261 void ical_obj_beforesave_backend(char *name, char *filename, char *partnum,
2262 char *disp, void *content, char *cbtype, char *cbcharset, size_t length,
2263 char *encoding, char *cbid, void *cbuserdata)
2265 icalcomponent *cal, *nested_event, *nested_todo, *whole_cal;
2267 char new_uid[256] = "";
2268 char buf[1024] = "";
2269 struct CtdlMessage *msg = (struct CtdlMessage *) cbuserdata;
2273 /* We're only interested in calendar data. */
2274 if ( (strcasecmp(cbtype, "text/calendar"))
2275 && (strcasecmp(cbtype, "application/ics")) ) {
2279 /* Hunt for the UID and drop it in
2280 * the "user data" pointer for the MIME parser. When
2281 * ical_obj_beforesave() sees it there, it'll set the Exclusive msgid
2284 whole_cal = icalcomponent_new_from_string(content);
2287 if (icalcomponent_isa(cal) == ICAL_VCALENDAR_COMPONENT) {
2288 nested_event = icalcomponent_get_first_component(
2289 cal, ICAL_VEVENT_COMPONENT);
2290 if (nested_event != NULL) {
2294 nested_todo = icalcomponent_get_first_component(
2295 cal, ICAL_VTODO_COMPONENT);
2296 if (nested_todo != NULL) {
2304 /* Set the message EUID to the iCalendar UID */
2306 p = ical_ctdl_get_subprop(cal, ICAL_UID_PROPERTY);
2308 /* If there's no uid we must generate one */
2309 generate_uuid(new_uid);
2310 icalcomponent_add_property(cal, icalproperty_new_uid(new_uid));
2311 p = ical_ctdl_get_subprop(cal, ICAL_UID_PROPERTY);
2314 safestrncpy(buf, icalproperty_get_comment(p), sizeof buf);
2315 if (!IsEmptyStr(buf)) {
2316 if (msg->cm_fields['E'] != NULL) {
2317 free(msg->cm_fields['E']);
2319 msg->cm_fields['E'] = strdup(buf);
2320 CtdlLogPrintf(CTDL_DEBUG, "Saving calendar UID <%s>\n", buf);
2324 /* Set the message subject to the iCalendar summary */
2326 p = ical_ctdl_get_subprop(cal, ICAL_SUMMARY_PROPERTY);
2328 safestrncpy(buf, icalproperty_get_comment(p), sizeof buf);
2329 if (!IsEmptyStr(buf)) {
2330 if (msg->cm_fields['U'] != NULL) {
2331 free(msg->cm_fields['U']);
2333 msg->cm_fields['U'] = strdup(buf);
2337 /* Set the message date/time to the iCalendar start time */
2339 p = ical_ctdl_get_subprop(cal, ICAL_DTSTART_PROPERTY);
2342 idtstart = icaltime_as_timet(icalproperty_get_dtstart(p));
2344 if (msg->cm_fields['T'] != NULL) {
2345 free(msg->cm_fields['T']);
2347 msg->cm_fields['T'] = strdup("000000000000000000");
2348 sprintf(msg->cm_fields['T'], "%ld", idtstart);
2353 icalcomponent_free(cal);
2354 if (whole_cal != cal) {
2355 icalcomponent_free(whole_cal);
2364 * See if we need to prevent the object from being saved (we don't allow
2365 * MIME types other than text/calendar in "calendar" or "tasks" rooms).
2367 * If the message is being saved, we also set various message header fields
2368 * using data found in the iCalendar object.
2370 int ical_obj_beforesave(struct CtdlMessage *msg)
2372 /* First determine if this is a calendar or tasks room */
2373 if ( (CC->room.QRdefaultview != VIEW_CALENDAR)
2374 && (CC->room.QRdefaultview != VIEW_TASKS)
2376 return(0); /* Not an iCalendar-centric room */
2379 /* It must be an RFC822 message! */
2380 if (msg->cm_format_type != 4) {
2381 CtdlLogPrintf(CTDL_DEBUG, "Rejecting non-RFC822 message\n");
2382 return(1); /* You tried to save a non-RFC822 message! */
2385 if (msg->cm_fields['M'] == NULL) {
2386 return(1); /* You tried to save a null message! */
2389 /* Do all of our lovely back-end parsing */
2390 mime_parser(msg->cm_fields['M'],
2392 *ical_obj_beforesave_backend,
2403 * Things we need to do after saving a calendar event.
2405 void ical_obj_aftersave_backend(char *name, char *filename, char *partnum,
2406 char *disp, void *content, char *cbtype, char *cbcharset, size_t length,
2407 char *encoding, char *cbid, void *cbuserdata)
2411 /* We're only interested in calendar items here. */
2412 if ( (strcasecmp(cbtype, "text/calendar"))
2413 && (strcasecmp(cbtype, "application/ics")) ) {
2417 /* Hunt for the UID and drop it in
2418 * the "user data" pointer for the MIME parser. When
2419 * ical_obj_beforesave() sees it there, it'll set the Exclusive msgid
2422 if ( (!strcasecmp(cbtype, "text/calendar"))
2423 || (!strcasecmp(cbtype, "application/ics")) ) {
2424 cal = icalcomponent_new_from_string(content);
2426 ical_saving_vevent(cal, cal);
2427 icalcomponent_free(cal);
2434 * Things we need to do after saving a calendar event.
2435 * (This will start back end tasks such as automatic generation of invitations,
2436 * if such actions are appropriate.)
2438 int ical_obj_aftersave(struct CtdlMessage *msg)
2440 char roomname[ROOMNAMELEN];
2443 * If this isn't the Calendar> room, no further action is necessary.
2446 /* First determine if this is our room */
2447 MailboxName(roomname, sizeof roomname, &CC->user, USERCALENDARROOM);
2448 if (strcasecmp(roomname, CC->room.QRname)) {
2449 return(0); /* Not the Calendar room -- don't do anything. */
2452 /* It must be an RFC822 message! */
2453 if (msg->cm_format_type != 4) return(1);
2455 /* Reject null messages */
2456 if (msg->cm_fields['M'] == NULL) return(1);
2458 /* Now recurse through it looking for our icalendar data */
2459 mime_parser(msg->cm_fields['M'],
2461 *ical_obj_aftersave_backend,
2471 void ical_session_startup(void) {
2472 CIT_ICAL = malloc(sizeof(struct cit_ical));
2473 memset(CIT_ICAL, 0, sizeof(struct cit_ical));
2476 void ical_session_shutdown(void) {
2482 * Back end for ical_fixed_output()
2484 void ical_fixed_output_backend(icalcomponent *cal,
2491 p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
2493 cprintf("%s\n", (const char *)icalproperty_get_comment(p));
2496 p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
2498 cprintf("%s\n", (const char *)icalproperty_get_comment(p));
2501 p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
2503 cprintf("%s\n", (const char *)icalproperty_get_comment(p));
2506 /* If the component has attendees, iterate through them. */
2507 for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY); (p != NULL); p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
2508 safestrncpy(buf, icalproperty_get_attendee(p), sizeof buf);
2509 if (!strncasecmp(buf, "MAILTO:", 7)) {
2511 /* screen name or email address */
2512 strcpy(buf, &buf[7]);
2514 cprintf("%s ", buf);
2519 /* If the component has subcomponents, recurse through them. */
2520 for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
2522 c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
2523 /* Recursively process subcomponent */
2524 ical_fixed_output_backend(c, recursion_level+1);
2531 * Function to output iCalendar data as plain text. Nobody uses MSG0
2532 * anymore, so really this is just so we expose the vCard data to the full
2535 void ical_fixed_output(char *ptr, int len) {
2539 stringy_cal = malloc(len + 1);
2540 safestrncpy(stringy_cal, ptr, len + 1);
2541 cal = icalcomponent_new_from_string(stringy_cal);
2548 ical_fixed_output_backend(cal, 0);
2550 /* Free the memory we obtained from libical's constructor */
2551 icalcomponent_free(cal);
2556 void serv_calendar_destroy(void)
2558 icaltimezone_free_builtin_timezones();
2562 * Register this module with the Citadel server.
2564 CTDL_MODULE_INIT(calendar)
2569 /* Tell libical to return errors instead of aborting if it gets bad data */
2570 icalerror_errors_are_fatal = 0;
2572 /* Use our own application prefix in tzid's generated from system tzdata */
2573 icaltimezone_set_tzid_prefix("/citadel.org/");
2575 /* Initialize our hook functions */
2576 CtdlRegisterMessageHook(ical_obj_beforesave, EVT_BEFORESAVE);
2577 CtdlRegisterMessageHook(ical_obj_aftersave, EVT_AFTERSAVE);
2578 CtdlRegisterSessionHook(ical_create_room, EVT_LOGIN);
2579 CtdlRegisterProtoHook(cmd_ical, "ICAL", "Citadel iCal commands");
2580 CtdlRegisterSessionHook(ical_session_startup, EVT_START);
2581 CtdlRegisterSessionHook(ical_session_shutdown, EVT_STOP);
2582 CtdlRegisterFixedOutputHook("text/calendar", ical_fixed_output);
2583 CtdlRegisterFixedOutputHook("application/ics", ical_fixed_output);
2584 CtdlRegisterCleanupHook(serv_calendar_destroy);
2587 /* return our Subversion id for the Log */