Closes G4 / G5 / K5.
handle_move now resolves the destination once before the file/folder
dispatch and applies RFC 4918 §9.9.4:
- Overwrite: F on a collision → 412 Precondition Failed, source
untouched, destination untouched.
- Overwrite: T (or absent) on a collision → delete the existing
destination, then proceed → 204 No Content.
- No collision → 201 Created (unchanged).
The same destination lookup powers the 201-vs-204 status decision, so
adding the precondition guard adds zero extra DB hits on the happy
path.
handle_restore now catches the unique-index collision out of
restore_item and returns 412 instead of letting it bubble as 500.
Mirrors the G4 semantics for the trashbin surface (restore has no
Overwrite header so the refusal is unconditional; client resolves by
renaming the live file first).
Sabre/DAV's CorePlugin and our test pins agreed independently — NC
clients expect this exact behavior, and the new G5b/G5c positive-case
tests guard against a regression that hard-rejected every MOVE.
Closes N2. The native WebDAV PUT handler now consults the lock
store before accepting a write: if the target path is exclusively
locked, the request must carry the lock token in its If: header
or the server returns 423 Locked. Without a matching token, the
body is never consumed — a rejected PUT no longer wastes the
upload bandwidth or hits the CDC ingester.
Two helpers are introduced so the same enforcement plugs into
the other mutator methods (delete/move/copy/proppatch) when their
fixes land:
extract_if_header_tokens — angle-bracket-scoop view of If:
(sufficient for one-target writes;
full §10.4 tagged-list grammar would
only matter for multi-resource Ifs)
enforce_native_lock — Some(423) when locked + no/wrong
token, None otherwise
Test N2 flipped from pinned 204 to assert 423. Added N2b: same
PUT with the captured Lock-Token in If:(<...>) returns 204, so a
regression that hard-rejected every PUT would still fail loudly.
Closes F5/F6. The NC PUT handler now evaluates conditional
preconditions before body ingestion and returns 412 Precondition
Failed when they fail:
- If-None-Match: * on an existing target → 412 (create-if-absent)
- If-None-Match with matching ETag → 412 (weak compare)
- If-Match: * with no current representation → 412
- If-Match with no listed ETag strong-matching the current → 412
The lookup that drives the precondition reuses the same query the
handler already needed for the 201-vs-204 distinction, so this adds
no extra DB round-trip. Rejected requests skip body ingestion
entirely so a 412 doesn't waste megabytes of bandwidth + disk I/O.
Test F5/F6 flipped from 'pinned current 204' to assert 412, plus
mirror cases F5b/F6b/F6c/F6d covering the legitimate-success paths
so logical-operator regressions can't slip past silently.
PROPFIND on upload chunk is necessary for application to resume the upload
it is used at least by Nextcloud Android app
issue has been raised via #415
unable to test, so I am using a playbook in test/webdav to simulate a
PROPIND on remote.php/dav/uploads/{user}/{session}
Edouard Vanbelle