Printers and groups (Client) are now scoped to an Owner identified by an opaque
bearer key (secrets.token_urlsafe(32)) stored in an httponly cookie, defaulting
to temporary. First-visit modal offers backup-key download (marks permanent) or
temporary-only choice. /session/restore re-attaches a fresh browser to a saved
key. Every printer-facing route enforces ownership (404 on mismatch, not just
filtering) since printer IDs are sequential ints. Drivers stay global/shared.
On upgrade, pre-existing printer/client rows backfill to a synthetic legacy Owner;
its key is written to {DATA_DIR}/legacy_owner_key.txt for manual restore.
SECURITY: Added Origin/Referer same-origin check on POST /session/restore to
block login-CSRF/session-fixation attacks (cross-site form POST can't re-point
victim's cookie at attacker's Owner without hitting that check first).
Tests: 140 pass (2 deselected: pre-existing locale-flaky, unrelated to this change).
Verified live: modal on first visit, isolation between browsers, backup-key
download and restore flow work end-to-end.
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
- test_printers_new_driver_list_visible: RED before fix — asserts #driver-list exists and is not hidden
- test_upload_feedback_visible_on_printers_new: guards OOB contract (driver name + hx-swap-oob in response)
- Added io, zipfile imports and local _make_driver_zip_for_form_test helper
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
kawaandClaude Haiku 4.5