`hub_auth_token.dart` write() previously did
await f.writeAsString(token); // file is now 0644 (umask)
await Process.run('chmod', ['600', f.path]);
which leaves a TOCTOU window where the file is world-readable
between the writeAsString and the chmod call. On a multi-user
host another user could read the bearer token during that
window.
New flow:
await tmp.writeAsString(token); // .tmp file
await chmod(600, tmp.path); // restrict mode FIRST
await tmp.rename(f.path); // atomic POSIX rename
The destination is never visible with permissive perms. Also
sets `~/.fai/` itself to 0700 on Unix on first creation so
other users on a shared host can't enumerate the directory.
dart analyze clean; flutter test green (12 tests).
Bumped pubspec to 0.49.1.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
Studio gains a new "HUB AUTHENTICATION" panel in Settings
mirroring the existing registry-credentials panel:
- `lib/data/hub_auth_token.dart` — `~/.fai/hub-auth-token`
helper (read / write / clear, mode 0600 on Unix). Sister
of `RegistryToken` with the same on-disk hygiene.
- `HubService.loadPersistedEndpoint` now reads the token at
startup and reconnects with it. `reconnect()` grew an
`authToken:` parameter with a sentinel that distinguishes
"keep current" from "drop". `reloadAuthToken()` is the
one-liner Settings calls after save / clear.
- `_HubAuthTokenPanel` in `fai_settings_dialog.dart` — paste
with show/hide toggle, save button, clear button, status
pill ("Configured (40 chars)" / "Not set (anonymous)"),
storage-location hint. Trimmed token length only — the
secret never round-trips back into the UI after save.
- EN + DE ARB entries (`hubAuthToken*`) + regenerated
`app_localizations.dart` keep the bilingual surface
consistent.
The hub side (auth.tokens config + tower middleware) shipped
on the platform side 2026-05-28 (43a54a2). Until now an
operator had no GUI path to consume it: they had to find the
file in their home dir, paste the token by hand, and bounce
Studio. This panel closes that loop.
Bumped pubspec to 0.47.0. dart analyze clean (No issues
found!); flutter test green (11 tests pass).
Block E item 1 of 4 done. Capability-picker badges,
default_scope editor, multi-version uninstall picker follow.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
