Commit Graph
2 Commits
Author SHA1 Message Date
mrambossekandClaude Opus 5 7a5004f293 server: a non-admin account can manage its own uploads
Signing in and being allowed to administer the server were the same
question: the OIDC callback refused a session outright to anyone outside
the admin group. A legitimate user could authenticate, be told what they
could not do, and be left with no way to see or delete the data their own
devices had uploaded.

They are separate questions now. Everyone who authenticates gets a
session; the admin flag rides inside the MAC'd payload, so promoting
yourself means forging a signature rather than editing a cookie, and a
role that does not parse fails closed to "user".

Pages scope themselves through visibleDevices/mayTouchRun rather than
filtering individually — per-page scoping is what the next page added
will be missing, and that failure is silent, since a listing that leaks
other people's uploads looks exactly like one that does not. Someone
else's run answers 404, not 403: a distinguishable refusal would confirm
the run exists. Revoking devices and minting enrolment tokens affect the
whole server and stay behind adminOnly at the route table, where someone
looking for who-may-do-what will actually find it.

Ownership is re-read per request instead of captured at sign-in, so
unlinking an account takes effect immediately rather than at session
expiry. Tests cover that, plus the degenerate case of an empty subject,
which must own nothing rather than everything with an empty account id.

Also: attribute the ICMPv6 finding per network. It compared "is IPv6
configured anywhere on this device" against "did any network answer",
which on a phone reports IPv6-is-broken about a network where IPv6 was
never configured. network_ref is null on every test, so the probe now
records per-network outcomes structurally rather than as prose a finding
would have to parse.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-01 21:10:38 +02:00
mrambossekandClaude Fable 5 89a5ff9139 adminauth: a break-glass local admin alongside OIDC
server-test / test (push) Successful in 44s
If the IdP is misconfigured, unreachable, or the admin group is a typo, the
operator is locked out of their own server with no way back short of editing
JSON on disk. A fallback that only matters when everything else is broken is
exactly the thing you cannot add later - by then you cannot get in to add it.

Stored as PBKDF2-HMAC-SHA256 from the standard library (Go 1.24+ has it, so no
dependency), 600k iterations, per-credential salt. A password rather than a
bearer token on purpose: a break-glass credential is the one most likely to end
up in a backup or a config-management repo, and a hash survives that where a
token does not. There is no email reset flow and should not be -
--set-admin-password on the host is the reset, and whoever can run it already
has the machine.

The password is read from stdin, never a flag, so it stays out of shell history
and the process list; piping still works for automation.

Details the tests pin, each for a reason:
  - the username is compared in constant time too, or a fast rejection is a
    timing oracle for which usernames exist;
  - the *stored* iteration count is used, so raising the constant later does not
    lock out existing passwords;
  - the throttle grows with consecutive failures but stays bounded and forgives
    after a quiet minute - a break-glass credential an attacker can lock out is
    a denial of service against the one person who needs it;
  - sessions are MAC-checked before anything in them is read, and rotating the
    secret invalidates every one at once, which is how they are revoked.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-08-01 17:12:54 +02:00