}
+// Compare function for "time-range" tests (RFC4791 section 9.9)
+// Returns nonzero if the supplied icalcomponent occurs within the specified time range
+int caldav_time_range_filter_matches(icalcomponent *cal_in, char *start_str, char *end_str) {
+
+ struct icaltimetype start = (
+ start_str
+ ? icaltime_from_string(start_str)
+ : icaltime_from_string("19010101T010101Z")
+ );
+
+ struct icaltimetype end = (
+ end_str
+ ? icaltime_from_string(end_str)
+ : icaltime_from_string("99991231T235959Z") // ISO8601 is not Y10K compliant
+ );
+
+
+// NOTE TO ME: The header file says
+// "This converts both times to the UTC timezone and compares them."
+// LIBICAL_ICAL_EXPORT int icaltime_compare(const struct icaltimetype a, const struct icaltimetype b);
+// How does it do that without knowing the time zone? Does it use a private method to look up into the
+// parent component to find a VTIMEZONE component? Find out. If it can do that, we don't have to dezonify.
+
+
+
+
+
+ // make a local copy of the component because we are going to modify it by converting times to UTC
+ icalcomponent *cal = icalcomponent_new_clone(cal_in);
+ ical_dezonify(cal);
+
+ syslog(LOG_DEBUG, "\033[7mcaldav_time_range_filter_matches()\033[0m : Does this %s fall between %s and %s ?",
+ icalcomponent_kind_to_string(icalcomponent_isa(cal)),
+ start_str,
+ end_str
+ );
+
+ syslog(LOG_DEBUG, "Well, here it is:");
+ syslog(LOG_DEBUG, "\033[35m%s\033[0m", icalcomponent_as_ical_string_r(cal));
+
+ icaltimetype dts = icalcomponent_get_dtstart(cal);
+ syslog(LOG_DEBUG, "component start: \033[36m%s\033[0m", icaltime_as_ical_string_r(dts));
+
+ icaltimetype dte = icalcomponent_get_dtend(cal);
+ syslog(LOG_DEBUG, "component end: \033[36m%s\033[0m", icaltime_as_ical_string_r(dte));
+
+ int result = ical_ctdl_is_overlap(dts, dte, start, end); // We have a convenience function for this.
+
+ icalcomponent_free(cal);
+ return(result);
+}
+
+
// Recursive function to apply CalDAV FILTERS to a calendar item.
// Returns zero if the calendar item was disqualified by a filter, nonzero if the calendar item still qualifies.
int caldav_apply_filters(void *cal, Array *filters, int apply_at_level) {
syslog(LOG_DEBUG, "caldav: apply_at_level=%d, this_rule_level=%d, skipping this rule", apply_at_level, this_rule_level);
}
- else if ( (!strcasecmp(t[1], "comp-filter"))
- && (!disregard_further_comp_filters)
- ) { // RFC4791 9.7.1 - filter by component
+ else if ( (!strcasecmp(t[1], "comp-filter")) // RFC4791 9.7.1 - filter by component
+ && (!disregard_further_comp_filters) // one is enough to succeed
+ ) {
syslog(LOG_DEBUG, "component filter at level %d", this_rule_level);
+ // comp-filter requires exactly one parameter (name="VXXXX")
+ if (num_tokens < 4) {
+ syslog(LOG_DEBUG, "caldav: comp-filter has no parameters - rejecting");
+ return(0);
+ }
+
// Root element is NOT a component, but the root filter is "comp-filter" -- reject!
if ( (!icalcomponent_isa_component(cal)) && (this_rule_level == 0) ) {
syslog(LOG_DEBUG, "caldav: root element is not a component, rejecting");
syslog(LOG_DEBUG, "text match filter at level %d FIXME not implemented yet", this_rule_level);
}
- else if (!strcasecmp(t[1], "time-range")) {
+ else if (!strcasecmp(t[1], "time-range")) { // RFC4791 9.9
syslog(LOG_DEBUG, "time range filter at level %d FIXME not implemented yet", this_rule_level);
+ for (int i=2; (i+1)<num_tokens; i+=2) {
+ char *tr_start = NULL;
+ char *tr_end = NULL;
+ if (!strcasecmp(t[i], "start")) {
+ tr_start = t[i+1];
+ }
+ else if (!strcasecmp(t[i], "end")) {
+ tr_end = t[i+1];
+ }
+ if (caldav_time_range_filter_matches(cal, tr_start, tr_end)) {
+ syslog(LOG_DEBUG, "time range matches");
+ }
+ else {
+ syslog(LOG_DEBUG, "time range does not match -- rejecting");
+ qual = 0;
+ }
+ }
}
++f;