The req.admin.id fix activated reinjectCurrentAdmin(); hardening its preservation
logic (found across Codex review rounds of #811):
- MFA hijack: reinject wrote back only password_hash/is_active/
must_change_password, leaving a crafted backup's two_factor_* on the
operator's row — it could strip or replace their second factor. The email-
matched row is now updated with the operator's full AUTH set (login identity,
password, and all two_factor_* columns). Relationship/audit FKs (role_id,
created_by) are deliberately NOT forced from the snapshot: on a cross-instance
restore those pre-restore ids may be absent from the backup and would dangle
the FK (SQLite rolls back at commit); the restored row keeps its own valid
values.
- Cross-instance restore rollback / FK safety: reinject matched only by email,
so a backup shipping a different admin with the default `admin` username hit
UNIQUE(username) and rolled the whole restore back; email and username could
even collide on two different rows. Reconciliation is now non-destructive:
the email-matching row is updated in place (id preserved → restored FKs like
events.created_by stay valid); any different row holding the operator's
username is RENAMED, not deleted (deletion would fire ON DELETE actions /
dangle references); only when no row has the operator's email is a fresh row
inserted, with created_by nulled and an explicit max(id)+1 id (batchInsert
left the Postgres identity sequence unadvanced, so a sequence-based insert
could collide).
- Stale session after restore: admin_users ids shift on restore, but the
operator's live JWT is bound only to decoded.id (IP logged not enforced; the
backup controls password_changed_at). The route now revokes the token (result
checked and logged) and clears the admin cookie; the client redirects to a
fresh login via a sessionInvalidated flag. Cookie clear is the unconditional
guarantee.
Adds SQLite-backed reinject regression tests (in-place login/MFA restore with id
and FK columns preserved, username-only rename, email+username on different rows,
clean insert with created_by nulled) and the frontend redirect on
sessionInvalidated.
Deferred (design decisions / pre-existing, need a Postgres test env — see PR
discussion): global "invalidate all pre-restore sessions" cutoff; preserving the
operator's ROLE semantics across an RBAC-table replace; and resyncing Postgres
identity sequences after any restore (batchInsert leaves them behind max(id) —
pre-existing, affects every restored table).
Paul Nothaft
b00a16159e