Two follow-ups from the review of #1137.
Filters were a second way to read hidden feedback. Every token on /photos is an OR of two halves: what THIS viewer marked, and what ANYONE marked. The response fields built from the second half — like_count, comment_count, color_label_count — are all gated on show_feedback_to_guests. The filter was not, so with the setting off a guest could still send ?filter=liked and get back exactly the photos other people liked, across all five tokens. Reachable by a direct API caller holding a gallery token; the frontend never sends filter to this endpoint.
The half it left standing was also the wrong half. It read guest_identifier from the guest_id QUERY PARAMETER, which never matched anything — the frontend invents that string in localStorage and never sends it when submitting feedback, while submissions store generateGuestIdentifier(req). So gating the aggregate would have emptied these filters rather than narrowing them to 'mine', and accepting a caller-supplied identifier was a way back through the gate. Resolved from the request now, hidden rows excluded to match what the viewer can see.
A mark whose row is cleared mid-write lost its value. #1137 fixed two calls both writing; this is one clearing while another sets. The clear empties the row, the row is deleted for being empty, and the setter's update matches nothing — the caller told 'no mark'. A zero-row update now reports itself and the caller re-reads, bounded at three passes, throwing rather than reporting a success that did not happen.
Merged with admin privileges: the author cannot self-approve.
Paul Nothaft
00b20b2d72