Shares using the OCM multi-protocol envelope (name multi, with the secret carried in a sibling protocol entry such as webdav) were rejected with Missing sharedSecret in protocol. Scan every protocol entry for the shared secret during validation, resolve the secret from the matching entry, and let the files provider serve the webdav entry of a multi envelope. Covers the file and folder resource types.
Signed-off-by: Micke Nordin <kano@sunet.se>
Apps implementing OCM endpoints via OCMEndpointRequestEvent (e.g.
SUNET/nextcloud-ocm_request_share for request-share, nextcloud/contacts
for invite-accepted) need to apply the same identity check that the
built-in addShare and receiveNotification handlers apply, so it makes
sense to make it publicly accessible.
It also allows us to refactor RequestHandlerController::confirmSignedOrigin
to use the new public method and drop the confirmNotificationIdentity helper.
Signed-off-by: Micke Nordin <kano@sunet.se>
