Import upstream v0.16.22, stripped

Upstream commit: 474dd0229cb20cf513036619781ed97bd8073c3f Enterprise-only files removed or emptied: 63 Enterprise-only snippets removed: 117 in 50 files Dangling module declarations removed: 5 Cargo edits turning enterprise off: 14 Verification: clean Enterprise feature gates left for rebuilt features: 19 in 18 files Produced by tools/fork/strip.py. The full report is in docs/fork/strip-reports/ on main.
2026-09-18 10:21:56 -07:00
commit 7dae9b29fd
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+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <[email protected]>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
+use crate::scheduling::{
+    ItipError, ItipMessage, attendee::attendee_handle_update, event_cancel::itip_cancel,
+    itip::itip_finalize, organizer::organizer_handle_update, snapshot::itip_snapshot,
+};
+use calcard::icalendar::ICalendar;
+
+pub fn itip_update(
+    ical: &mut ICalendar,
+    old_ical: &ICalendar,
+    account_emails: &[String],
+) -> Result<Vec<ItipMessage<ICalendar>>, ItipError> {
+    let old_itip = itip_snapshot(old_ical, account_emails, false)?;
+    match itip_snapshot(ical, account_emails, false) {
+        Ok(new_itip) => {
+            let mut sequences = Vec::new();
+            if old_itip.organizer.email != new_itip.organizer.email {
+                // RFC 6638 does not support replacing the organizer
+                Err(ItipError::OrganizerMismatch)
+            } else if old_itip.organizer.email.is_local {
+                organizer_handle_update(old_ical, ical, old_itip, new_itip, &mut sequences)
+            } else {
+                attendee_handle_update(ical, old_itip, new_itip)
+            }
+            .inspect(|_| {
+                itip_finalize(ical, &sequences);
+            })
+        }
+        Err(err) => {
+            match &err {
+                ItipError::NoSchedulingInfo
+                | ItipError::NotOrganizer
+                | ItipError::NotOrganizerNorAttendee
+                | ItipError::OtherSchedulingAgent => {
+                    if old_itip.organizer.email.is_local {
+                        // RFC 6638 does not support replacing the organizer, so we cancel the event
+                        itip_cancel(old_ical, account_emails, false).map(|message| vec![message])
+                    } else {
+                        Err(ItipError::CannotModifyAddress)
+                    }
+                }
+                _ => Err(err),
+            }
+        }
+    }
+}