* Convert all freebusy data to UTC prior to output
[citadel.git] / citadel / modules / calendar / serv_calendar.c
index acff28e7a2b12a1eadbc72b4581d18abff6079c8..f8dcdf930d317d1bfc9a7a68ecbb38cc5de768e4 100644 (file)
@@ -1224,31 +1224,28 @@ void ical_conflicts(long msgnum, char *partnum) {
  * Look for busy time in a VEVENT and add it to the supplied VFREEBUSY.
  *
  * fb                  The VFREEBUSY component to which we are appending
- * top_level_cal       The top-level VCALENDAR component which contains VEVENT to be added
- * cal                 Initially set to the same as top_level_cal by the caller, but then we recurse
+ * top_level_cal       The top-level VCALENDAR component which contains a VEVENT to be added
  */
-void ical_add_to_freebusy(icalcomponent *fb, icalcomponent *top_level_cal, icalcomponent *cal) {
+void ical_add_to_freebusy(icalcomponent *fb, icalcomponent *top_level_cal) {
+       icalcomponent *cal;
        icalproperty *p;
        icalvalue *v;
        struct icalperiodtype this_event_period = icalperiodtype_null_period();
+       icaltimetype dtstart = icaltime_null_time();
+       icaltimetype dtend = icaltime_null_time();
 
-       if (!top_level_cal) return;
-       if (!cal) return;
+       /* recur variables */
+       icalproperty *rrule = NULL;
+       struct icalrecurrencetype recur;
+       icalrecur_iterator *ritr = NULL;
+       struct icaldurationtype dur;
+       int num_recur = 0;
 
-       /* Convert all time zones to UTC (FIXME this won't work with recurring events) */
-       if (icalcomponent_isa(cal) == ICAL_VCALENDAR_COMPONENT) {
-               ical_dezonify(cal);
-       }
+       if (!top_level_cal) return;
 
-       /* Now boil it down to the VEVENT only (FIXME this won't work with recurring events) */
-       if (icalcomponent_isa(cal) != ICAL_VEVENT_COMPONENT) {
-               ical_add_to_freebusy(fb, top_level_cal,
-                       icalcomponent_get_first_component(
-                               cal, ICAL_VEVENT_COMPONENT
-                       )
-               );
-               return;
-       }
+       /* Find the VEVENT component containing an event */
+       cal = icalcomponent_get_first_component(top_level_cal, ICAL_VEVENT_COMPONENT);
+       if (!cal) return;
 
        /* If this event is not opaque, the user isn't publishing it as
         * busy time, so don't bother doing anything else.
@@ -1263,45 +1260,100 @@ void ical_add_to_freebusy(icalcomponent *fb, icalcomponent *top_level_cal, icalc
                }
        }
 
-       /* Convert the DTSTART and DTEND properties to an icalperiod. */
+       /*
+        * Now begin calculating the event start and end times.
+        */
        p = icalcomponent_get_first_property(cal, ICAL_DTSTART_PROPERTY);
-       if (p != NULL) {
-               this_event_period.start = icalproperty_get_dtstart(p);
-       }
+       if (!p) return;
+       dtstart = icalproperty_get_dtstart(p);
 
-       p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
-       if (p != NULL) {
-               this_event_period.end = icalproperty_get_dtstart(p);
-       }
-
-       /* Now add it. */
-       icalcomponent_add_property(fb, icalproperty_new_freebusy(this_event_period));
-
-       /* Make sure the DTSTART property of the freebusy *list* is set to
-        * the DTSTART property of the *earliest event*.
-        */
-       p = icalcomponent_get_first_property(fb, ICAL_DTSTART_PROPERTY);
-       if (p == NULL) {
-               icalcomponent_set_dtstart(fb, icalcomponent_get_dtstart(cal));
+       if (icaltime_is_utc(dtstart)) {
+               dtstart.zone = icaltimezone_get_utc_timezone();
        }
        else {
-               if (icaltime_compare(icalcomponent_get_dtstart(cal), icalcomponent_get_dtstart(fb)) < 0) {
-                       icalcomponent_set_dtstart(fb, icalcomponent_get_dtstart(cal));
+               dtstart.zone = icalcomponent_get_timezone(top_level_cal,
+                       icalparameter_get_tzid(
+                               icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
+                       )
+               );
+               if (!dtstart.zone) {
+                       dtstart.zone = get_default_icaltimezone();
                }
        }
 
-       /* Make sure the DTEND property of the freebusy *list* is set to
-        * the DTEND property of the *latest event*.
-        */
-       p = icalcomponent_get_first_property(fb, ICAL_DTEND_PROPERTY);
-       if (p == NULL) {
-               icalcomponent_set_dtend(fb, icalcomponent_get_dtend(cal));
+       dtend = icalcomponent_get_dtend(cal);
+       if (!icaltime_is_null_time(dtend)) {
+               dur = icaltime_subtract(dtend, dtstart);
        }
-       else {
-               if (icaltime_compare(icalcomponent_get_dtend(cal), icalcomponent_get_dtend(fb)) > 0) {
-                       icalcomponent_set_dtend(fb, icalcomponent_get_dtend(cal));
-               }
+
+       /* Is a recurrence specified?  If so, get ready to process it... */
+       rrule = ical_ctdl_get_subprop(cal, ICAL_RRULE_PROPERTY);
+       if (rrule) {
+               recur = icalproperty_get_rrule(rrule);
+               ritr = icalrecur_iterator_new(recur, dtstart);
        }
+
+       do {
+               /* Convert the DTSTART and DTEND properties to an icalperiod. */
+               this_event_period.start = dtstart;
+       
+               if (!icaltime_is_null_time(dtend)) {
+                       this_event_period.end = dtend;
+               }
+
+               /* Convert the timestamps to UTC.  It's ok to do this because we've already expanded
+                * recurrences and this data is never going to get used again.
+                */
+               this_event_period.start = icaltime_convert_to_zone(
+                       this_event_period.start,
+                       icaltimezone_get_utc_timezone()
+               );
+               this_event_period.end = icaltime_convert_to_zone(
+                       this_event_period.end,
+                       icaltimezone_get_utc_timezone()
+               );
+       
+               /* Now add it. */
+               icalcomponent_add_property(fb, icalproperty_new_freebusy(this_event_period));
+
+               /* Make sure the DTSTART property of the freebusy *list* is set to
+                * the DTSTART property of the *earliest event*.
+                */
+               p = icalcomponent_get_first_property(fb, ICAL_DTSTART_PROPERTY);
+               if (p == NULL) {
+                       icalcomponent_set_dtstart(fb, this_event_period.start);
+               }
+               else {
+                       if (icaltime_compare(this_event_period.start, icalcomponent_get_dtstart(fb)) < 0) {
+                               icalcomponent_set_dtstart(fb, this_event_period.start);
+                       }
+               }
+       
+               /* Make sure the DTEND property of the freebusy *list* is set to
+                * the DTEND property of the *latest event*.
+                */
+               p = icalcomponent_get_first_property(fb, ICAL_DTEND_PROPERTY);
+               if (p == NULL) {
+                       icalcomponent_set_dtend(fb, this_event_period.end);
+               }
+               else {
+                       if (icaltime_compare(this_event_period.end, icalcomponent_get_dtend(fb)) > 0) {
+                               icalcomponent_set_dtend(fb, this_event_period.end);
+                       }
+               }
+
+               if (rrule) {
+                       dtstart = icalrecur_iterator_next(ritr);
+                       if (!icaltime_is_null_time(dtend)) {
+                               dtend = icaltime_add(dtstart, dur);
+                               dtend.zone = dtstart.zone;
+                               dtend.is_utc = dtstart.is_utc;
+                       }
+                       ++num_recur;
+               }
+
+       } while ( (rrule) && (!icaltime_is_null_time(dtstart)) && (num_recur < MAX_RECUR) ) ;
+       icalrecur_iterator_free(ritr);
 }
 
 
@@ -1335,9 +1387,7 @@ void ical_freebusy_backend(long msgnum, void *data) {
        CtdlFreeMessage(msg);
 
        if (ird.cal) {
-               CtdlLogPrintf(CTDL_DEBUG, "Adding event from msg #%ld...\n", msgnum);
-               ical_add_to_freebusy(fb, ird.cal, ird.cal);     /* Add VEVENT times to VFREEBUSY */
-               CtdlLogPrintf(CTDL_DEBUG, "...done.\n");
+               ical_add_to_freebusy(fb, ird.cal);              /* Add VEVENT times to VFREEBUSY */
                icalcomponent_free(ird.cal);
        }
 }
@@ -1495,7 +1545,7 @@ void ical_freebusy(char *who) {
        serialized_request = icalcomponent_as_ical_string_r(encaps);
        icalcomponent_free(encaps);     /* Don't need this anymore. */
 
-       cprintf("%d Here is the free/busy data:\n", LISTING_FOLLOWS);
+       cprintf("%d Free/busy for %s\n", LISTING_FOLLOWS, usbuf.fullname);
        if (serialized_request != NULL) {
                client_write(serialized_request, strlen(serialized_request));
                free(serialized_request);
@@ -1600,7 +1650,7 @@ void ical_getics(void)
 
        encaps = icalcomponent_new_vcalendar();
        if (encaps == NULL) {
-               CtdlLogPrintf(CTDL_DEBUG, "ERROR: could not allocate component!\n");
+               CtdlLogPrintf(CTDL_ALERT, "ERROR: could not allocate component!\n");
                cprintf("%d Could not allocate memory\n", ERROR+INTERNAL_ERROR);
                return;
        }
@@ -1678,7 +1728,7 @@ void ical_putics(void)
        }
 
        cprintf("%d Transmit data now\n", SEND_LISTING);
-        calstream = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
+       calstream = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
        if (calstream == NULL) {
                return;
        }
@@ -1999,7 +2049,7 @@ void ical_send_out_invitations(icalcomponent *top_level_cal, icalcomponent *cal)
        /* Encapsulate the VEVENT component into a complete VCALENDAR */
        encaps = icalcomponent_new_vcalendar();
        if (encaps == NULL) {
-               CtdlLogPrintf(CTDL_DEBUG, "ERROR: could not allocate component!\n");
+               CtdlLogPrintf(CTDL_ALERT, "ERROR: could not allocate component!\n");
                icalcomponent_free(the_request);
                return;
        }
@@ -2033,9 +2083,6 @@ void ical_send_out_invitations(icalcomponent *top_level_cal, icalcomponent *cal)
                  || (icalproperty_isa(p) == ICAL_RECURRENCEID_PROPERTY)
                ) {
                        t = icalproperty_get_dtstart(p);        // it's safe to use dtstart for all of them
-                       CtdlLogPrintf(CTDL_DEBUG, "Found an icaltimetype: %s\n",
-                               icaltime_as_ical_string(t)
-                       );
 
                        /* First see if there's a timezone attached to the data structure itself */
                        if (icaltime_is_utc(t)) {
@@ -2044,7 +2091,6 @@ void ical_send_out_invitations(icalcomponent *top_level_cal, icalcomponent *cal)
                        else {
                                z = icaltime_get_timezone(t);
                        }
-                       if (z) CtdlLogPrintf(CTDL_DEBUG, "Timezone is present in data structure\n");
 
                        /* If not, try to determine the tzid from the parameter using attached zones */
                        if (!z) {
@@ -2053,7 +2099,6 @@ void ical_send_out_invitations(icalcomponent *top_level_cal, icalcomponent *cal)
                                                icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
                                        )
                                );
-                               if (z) CtdlLogPrintf(CTDL_DEBUG, "Timezone was found in attached zones\n");
                        }
 
                        /* Still no good?  Try our internal database */
@@ -2063,21 +2108,20 @@ void ical_send_out_invitations(icalcomponent *top_level_cal, icalcomponent *cal)
                                                icalproperty_get_first_parameter(p, ICAL_TZID_PARAMETER)
                                        )
                                );
-                               if (z) CtdlLogPrintf(CTDL_DEBUG, "Timezone was found in internal db\n");
                        }
 
                        if (z) {
-                               CtdlLogPrintf(CTDL_DEBUG, "Have valid timezone, need to attach it.\n");
+                               /* We have a valid timezone.  Good.  Now we need to attach it. */
 
                                zone_already_attached = 0;
                                for (i=0; i<5; ++i) {
                                        if (z == attached_zones[i]) {
+                                               /* We've already got this one, no need to attach another. */
                                                ++zone_already_attached;
-                                               CtdlLogPrintf(CTDL_DEBUG, "zone already attached!!\n");
                                        }
                                }
                                if ((!zone_already_attached) && (num_zones_attached < 5)) {
-                                       CtdlLogPrintf(CTDL_DEBUG, "attach zone %d\n", num_zones_attached);
+                                       /* This is a new one, so attach it. */
                                        attached_zones[num_zones_attached++] = z;
                                }
 
@@ -2106,8 +2150,6 @@ void ical_send_out_invitations(icalcomponent *top_level_cal, icalcomponent *cal)
        icalcomponent_free(encaps);     /* Don't need this anymore. */
        if (serialized_request == NULL) return;
 
-       CtdlLogPrintf(CTDL_DEBUG, "SENDING INVITATIONS:\n%s\n", serialized_request);
-
        reqsize = strlen(serialized_request) + SIZ;
        request_message_text = malloc(reqsize);
        if (request_message_text != NULL) {