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felhom.eu/hub/internal
admin 670ec35ece hub v0.86.0 — Copy works without revealing, and every copy branch reports itself
Found by the operator, in the way that matters: it cost a real login.

The v0.84.0 Console access card shipped its Copy button DISABLED until a Reveal.
Clicking it did nothing, silently, so the clipboard kept whatever was already in
it — another host's console password from an earlier reveal. That got pasted into
demo-hp's PVE login, which failed with no explanation: the box logged a plain
`password check failed for user (root)`, the credential was never at fault, and
nothing on screen said the copy had not happened.

A copy button that silently no-ops is worse than no copy button. The operator
cannot tell "copied" from "did nothing", and the stale value left behind is a
VALID secret for a DIFFERENT machine — so the failure looks like a stale
credential and sends you diagnosing the wrong thing.

Copy now works without revealing, and that is the safer default rather than a
concession: the secret goes straight to the clipboard and never renders on
screen, so it cannot be shoulder-surfed or caught in a screenshot. Reveal remains
for when it must be read.

Three silent-failure branches closed, all in the same eight-line function:
  - not yet revealed        -> was a disabled no-op; now fetches and copies
  - navigator.clipboard absent -> was silently skipped; now shows it and says why
  - writeText() REJECTED    -> promise was ignored, so the operator believed it
                               copied; now shows it and reports the refusal

The success path names the host ("Copied demo-hp-bb76ea's root@pam password"),
because the clipboard is fleet-wide and every box has a different console
password — "copied" alone cannot say for WHICH box, which is the confusion that
produced the incident.

One retrieval path, shared: the endpoint is defined once (data-reveal-url) and
read back with getAttribute, so Copy cannot drift onto a different, unaudited URL
than Reveal. Server-side is unchanged — both buttons hit the same CSRF-gated
endpoint and both write the same recovery_credential_revealed event, which is
correct: the register records accesses, and a copy is an access.

Tests 566 -> 568. Red-proof: re-adding `disabled` reproduces the shipped bug.
2026-07-31 09:22:11 +02:00
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