#include "webcit.h"
-#define CAL "urn:ietf:params:xml:ns:caldav:" // Shorthand for the XML namespace of CalDAV
-#define CALLEN sizeof(CAL)-1 // And the length of that string
+#define CALDAV "urn:ietf:params:xml:ns:caldav:" // Shorthand for the XML namespace of CalDAV
+#define CALDAVLEN sizeof(CALDAV)-1 // And the length of that string
+
+const char *the_beginning_of_time = "19010101T010101Z";
+const char *the_end_of_time = "99991231T235959Z";
// A CalDAV REPORT can only be one type. This is stored in the report_type member.
enum cr_type {
cr_freebusy_query
};
-
// Data type for CalDAV Report Parameters.
// As we slog our way through the XML we learn what the client is asking for
// and build up the contents of this data type.
#endif
// RFC4791 7.8 "calendar-query" REPORT - Client will send a lot of search criteria.
- if (!strcasecmp(el, CAL"calendar-query")) {
+ if (!strcasecmp(el, CALDAV"calendar-query")) {
crp->report_type = cr_calendar_query;
}
// RFC4791 7.9 "calendar-multiget" REPORT - Client will supply a list of specific hrefs.
- else if (!strcasecmp(el, CAL"calendar-multiget")) {
+ else if (!strcasecmp(el, CALDAV"calendar-multiget")) {
crp->report_type = cr_calendar_multiget;
}
// RFC4791 7.10 "free-busy-query" REPORT
- else if (!strcasecmp(el, CAL"free-busy-query")) {
+ else if (!strcasecmp(el, CALDAV"free-busy-query")) {
crp->report_type = cr_freebusy_query;
}
// RFC4791 9.7 create a filter array if this query contains a "filter" stanza
- else if (!strcasecmp(el, CAL"filter")) {
+ else if (!strcasecmp(el, CALDAV"filter")) {
crp->filters = array_new(SIZ);
crp->filter_nest = crp->comp_filter_nesting_level;
}
// Handle the filters defined in RFC4791 9.7.1 through 9.7.5
- else if ( ( (!strcasecmp(el, CAL"comp-filter"))
- || (!strcasecmp(el, CAL"prop-filter"))
- || (!strcasecmp(el, CAL"param-filter"))
- || (!strcasecmp(el, CAL"is-not-defined"))
- || (!strcasecmp(el, CAL"text-match"))
- || (!strcasecmp(el, CAL"time-range"))
+ else if ( ( (!strcasecmp(el, CALDAV"comp-filter"))
+ || (!strcasecmp(el, CALDAV"prop-filter"))
+ || (!strcasecmp(el, CALDAV"param-filter"))
+ || (!strcasecmp(el, CALDAV"is-not-defined"))
+ || (!strcasecmp(el, CALDAV"text-match"))
+ || (!strcasecmp(el, CALDAV"time-range"))
)
&& (crp->filters) // Make sure we actually allocated an array
) {
- if (!strcasecmp(el, CAL"comp-filter")) {
+ if (!strcasecmp(el, CALDAV"comp-filter")) {
++crp->comp_filter_nesting_level;
}
char newfilter[SIZ];
int a = 0;
int len = snprintf(newfilter, SIZ, "%d|", crp->comp_filter_nesting_level - crp->filter_nest - 1);
- len += snprintf(&newfilter[len], SIZ-len, "%s", &el[CALLEN]); // filter name without the namespace
+ len += snprintf(&newfilter[len], SIZ-len, "%s", &el[CALDAVLEN]); // filter name without the namespace
while (attr[a]) {
len += snprintf(&newfilter[len], SIZ-len, "|%s", attr[a++]); // now save the attributes
}
// end logging
#endif
- if (!strcasecmp(el, CAL"comp-filter")) {
+ if (!strcasecmp(el, CALDAV"comp-filter")) {
--crp->comp_filter_nesting_level;
}
}
+// 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, char *start_str, char *end_str) {
+
+ struct icaltimetype start = icaltime_from_string(start_str);
+ syslog(LOG_DEBUG, " search start: \033[36m%16s\033[0m (%s)", icaltime_as_ical_string_r(start), icaltime_get_tzid(start));
+
+ struct icaltimetype end = icaltime_from_string(end_str);
+ syslog(LOG_DEBUG, " search end: \033[36m%16s\033[0m (%s)", icaltime_as_ical_string_r(end), icaltime_get_tzid(end));
+
+ // IMPLEMENTATION NOTE:
+ // ical_ctdl_is_overlap() works because icaltime_compare() is really smart.
+ // It looks at the time zone of the dtstart/dtend and can apparently go back up the icalcomponent
+ // hierarchy to find its time zone data. I tested this by creating an event with a fictional
+ // time zone and it did the right thing. It even showed the fictional name to me. This saves us
+ // from having to convert everything to UTC before comparing. Nice!
+
+ icaltimetype dts = icalcomponent_get_dtstart(cal);
+ syslog(LOG_DEBUG, "component start: \033[36m%16s\033[0m (%s)", icaltime_as_ical_string_r(dts), icaltime_get_tzid(dts));
+
+ icaltimetype dte = icalcomponent_get_dtend(cal);
+ syslog(LOG_DEBUG, "component end: \033[36m%16s\033[0m (%s)", icaltime_as_ical_string_r(dte), icaltime_get_tzid(dte));
+
+ return(ical_ctdl_is_overlap(dts, dte, start, end)); // We have a convenience function for this.
+}
+
+
// 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, "text match filter at level %d FIXME not implemented yet", this_rule_level);
}
- else if (!strcasecmp(t[1], "time-range")) {
- syslog(LOG_DEBUG, "time range filter at level %d FIXME not implemented yet", this_rule_level);
- for (int i=0; i<num_tokens; ++i) {
- syslog(LOG_DEBUG, "token %2d : <%s>", i, t[i]);
+ else if (!strcasecmp(t[1], "time-range")) { // RFC4791 9.9
+ syslog(LOG_DEBUG, "time range filter at level %d FIXME add recur", this_rule_level);
+ for (int i=2; (i+1)<num_tokens; i+=2) {
+ char *tr_start = (char *)the_beginning_of_time; // default if not specified
+ char *tr_end = (char *)the_end_of_time; // default if not specified
+ 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;
+ }
}
}
projects / citadel.git / blobdiff