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fix(ical): fix timerange issue

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accept iCal DATE-TIME + RFC 3339 fallback
This commit is contained in:
Edouard Vanbelle
2026-07-14 22:34:22 +02:00
parent bad3abba27
commit a67fcadeea
3 changed files with 406 additions and 16 deletions
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src/application/adapters/caldav_adapter.rs
+144 -16
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@@ -17,6 +17,36 @@ use crate::application::adapters::webdav_adapter::{
};
use crate::application::dtos::calendar_dto::{CalendarDto, CalendarEventDto};
/// Parse a CalDAV `time-range` element's `start` / `end` attribute
/// value into a UTC `DateTime`.
///
/// RFC 4791 §9.9 requires iCalendar DATE-TIME format
/// (`YYYYMMDDTHHMMSSZ` — no dashes, no colons). Every real client
/// (Thunderbird, Apple Calendar, DAVx⁵, Gnome Calendar) sends this
/// shape, as does the `python-caldav` library.
///
/// A prior pass parsed the value with `DateTime::parse_from_rfc3339`
/// exclusively, which expects `YYYY-MM-DDTHH:MM:SSZ` and fails on
/// the standard shape — silently returning `None`. The caller then
/// dropped the whole time-range filter and fell through to
/// `list_events`, returning the entire calendar regardless of the
/// window. RFC 3339 is retained as a defensive fallback for the rare
/// client that emits it.
///
/// Returns `None` on any parse failure — callers propagate that as
/// "no time-range filter provided", matching the pre-fix behaviour
/// for missing attributes.
fn parse_caldav_datetime(value: &str) -> Option<DateTime<Utc>> {
chrono::NaiveDateTime::parse_from_str(value, "%Y%m%dT%H%M%SZ")
.map(|nd| nd.and_utc())
.ok()
.or_else(|| {
DateTime::parse_from_rfc3339(value)
.ok()
.map(|dt| dt.with_timezone(&Utc))
})
}
/// Returns whether `caller_id` owns `calendar`.
///
/// CalDAV clients (DAVx5, Apple Calendar, Thunderbird) only mount a collection
@@ -92,7 +122,6 @@ impl CalDavAdapter {
s if s == "prop" || s.ends_with(":prop") => in_prop = true,
s if s == "filter" || s.ends_with(":filter") => in_filter = true,
s if s == "time-range" || s.ends_with(":time-range") => {
// Parse time-range attributes
for attr in e.attributes().flatten() {
let attr_name =
std::str::from_utf8(attr.key.as_ref()).unwrap_or("");
@@ -101,14 +130,9 @@ impl CalDavAdapter {
.unwrap_or_default();
if attr_name == "start" {
// Parse ISO date format with Z for UTC
start_time = DateTime::parse_from_rfc3339(&attr_value)
.ok()
.map(|dt| dt.with_timezone(&Utc));
start_time = parse_caldav_datetime(&attr_value);
} else if attr_name == "end" {
end_time = DateTime::parse_from_rfc3339(&attr_value)
.ok()
.map(|dt| dt.with_timezone(&Utc));
end_time = parse_caldav_datetime(&attr_value);
}
}
}
@@ -160,7 +184,7 @@ impl CalDavAdapter {
let qname = WebDavAdapter::resolve_name(name_str, &ns_map);
props.push(qname);
} else if name_str == "time-range" || name_str.ends_with(":time-range") {
// Parse time-range attributes
// Empty-element form: <C:time-range start="..." end="..."/>
for attr in e.attributes().flatten() {
let attr_name = std::str::from_utf8(attr.key.as_ref()).unwrap_or("");
let attr_value = attr
@@ -168,14 +192,9 @@ impl CalDavAdapter {
.unwrap_or_default();
if attr_name == "start" {
// Parse ISO date format with Z for UTC
start_time = DateTime::parse_from_rfc3339(&attr_value)
.ok()
.map(|dt| dt.with_timezone(&Utc));
start_time = parse_caldav_datetime(&attr_value);
} else if attr_name == "end" {
end_time = DateTime::parse_from_rfc3339(&attr_value)
.ok()
.map(|dt| dt.with_timezone(&Utc));
end_time = parse_caldav_datetime(&attr_value);
}
}
}
@@ -1304,3 +1323,112 @@ impl CalDavAdapter {
Ok((displayname, description, color))
}
}
// ─────────────────────────────────────────────────────────────
// Tests
// ─────────────────────────────────────────────────────────────
#[cfg(test)]
mod time_range_parser_tests {
use super::*;
// ── parse_caldav_datetime ─────────────────────────────────
#[test]
fn ical_date_time_utc_form_parses() {
// Standard shape per RFC 4791 §9.9 / RFC 5545 §3.3.5 —
// what every real CalDAV client sends.
let parsed = parse_caldav_datetime("20260103T090000Z").expect("iCal DATE-TIME must parse");
assert_eq!(parsed.to_rfc3339(), "2026-01-03T09:00:00+00:00");
}
#[test]
fn rfc3339_form_parses_as_fallback() {
// Defensive fallback for the rare client that emits
// dashes+colons. Retained so behaviour is a superset of
// the pre-fix parser (which accepted only this shape).
let parsed = parse_caldav_datetime("2026-01-03T09:00:00Z").expect("RFC 3339 fallback");
assert_eq!(parsed.to_rfc3339(), "2026-01-03T09:00:00+00:00");
}
#[test]
fn ical_and_rfc3339_agree_on_same_instant() {
// Sanity: the two accepted forms represent the same
// instant when they describe the same wall time.
let a = parse_caldav_datetime("20260103T090000Z").unwrap();
let b = parse_caldav_datetime("2026-01-03T09:00:00Z").unwrap();
assert_eq!(a, b);
}
#[test]
fn empty_string_returns_none() {
assert!(parse_caldav_datetime("").is_none());
}
#[test]
fn malformed_returns_none() {
// Neither iCal nor RFC 3339 shape — parser must reject
// without panicking. The caller treats None as "no
// time-range attribute provided", falling through to the
// unfiltered event listing (same as the pre-fix
// behaviour on unparseable input — but at least now we
// reach that branch by intent, not by silent parse loss).
assert!(parse_caldav_datetime("not-a-datetime").is_none());
assert!(parse_caldav_datetime("20260103").is_none()); // date only, no time
assert!(parse_caldav_datetime("20260103T090000").is_none()); // missing Z
}
// ── parse_report — end-to-end integration ─────────────────
#[test]
fn calendar_query_with_ical_time_range_captures_both_bounds() {
// The end-to-end regression: a calendar-query REPORT
// with iCal DATE-TIME `time-range` attributes MUST
// surface both bounds as Some in `CalDavReportType::
// CalendarQuery { time_range, .. }`. Pre-fix this test
// would have seen `time_range = None` because
// parse_from_rfc3339 rejected `20260101T093000Z`.
let xml = r#"<?xml version="1.0" encoding="UTF-8"?>
<C:calendar-query xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">
<D:prop><D:getetag/><C:calendar-data/></D:prop>
<C:filter>
<C:comp-filter name="VCALENDAR">
<C:comp-filter name="VEVENT">
<C:time-range start="20260101T093000Z" end="20260101T120000Z"/>
</C:comp-filter>
</C:comp-filter>
</C:filter>
</C:calendar-query>"#;
let report = CalDavAdapter::parse_report(xml.as_bytes()).expect("REPORT parses");
match report {
CalDavReportType::CalendarQuery { time_range, .. } => {
let (start, end) = time_range
.expect("iCal DATE-TIME time-range must parse as Some; got None (regression)");
assert_eq!(start.to_rfc3339(), "2026-01-01T09:30:00+00:00");
assert_eq!(end.to_rfc3339(), "2026-01-01T12:00:00+00:00");
}
other => panic!("Expected CalendarQuery, got {:?}", other),
}
}
#[test]
fn calendar_query_without_time_range_has_none() {
// Baseline: a filter-less calendar-query still produces
// CalendarQuery with time_range=None. Guards against a
// fix that overreaches and starts inventing time bounds.
let xml = r#"<?xml version="1.0" encoding="UTF-8"?>
<C:calendar-query xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">
<D:prop><D:getetag/><C:calendar-data/></D:prop>
</C:calendar-query>"#;
let report = CalDavAdapter::parse_report(xml.as_bytes()).expect("REPORT parses");
match report {
CalDavReportType::CalendarQuery { time_range, .. } => {
assert!(time_range.is_none());
}
other => panic!("Expected CalendarQuery, got {:?}", other),
}
}
}