2 Commits
Author SHA1 Message Date
jaap-jan 49f617b450 Wire the Avalonia shell to the vault
The host list now comes from the vault instead of from a form. A fresh
machine takes a server URL, signs in through the browser, enrolls, and
from then on opens with the passphrase alone.

DodoSSH.Client.Session is the composition layer: where a profile lives,
how it unlocks, and how a machine gets one. ClientPaths picks a
non-roaming per-OS directory — %LOCALAPPDATA% and never %APPDATA%,
because a SQLite cache that roams between two machines is a corrupt one,
and each machine's outbox is its own. SessionOpener needs no transport at
all and could not reach one if it wanted to; that is the offline unlock,
asserted rather than asserted about. A wrong passphrase, a stale KDF and a
grant revoked by a rekey are three different answers, because the remedies
are three different things and telling someone to retype a passphrase that
was never the problem is worse than saying nothing.

The shell's states are the onboarding story. The recovery code gets its
own state that cannot be clicked past: it exists for one moment, losing it
with the passphrase loses the vault, and there is no server-side reset by
design. It is dropped from memory on confirmation rather than merely
hidden.

Sign-in is a delegate over IVaultServer, so the whole state machine runs
in a test against an in-memory server — no browser, no identity provider,
no toolkit. The view models are plain observable objects, which is what
makes that possible. What it does not cover is whether the XAML binds to
the right names; that needs a rendered tree and Avalonia.Headless, and is
its own piece of work.

Three things found by doing it rather than by reading it:

- Pooled SQLite connections keep the database file open after the last
  context is disposed. On Windows that means locked, so the application
  could never replace its own cache — and a test could not clean up after
  itself, which is how it surfaced. Dispose now clears the pool.
- EF's SQLite provider puts the database in WAL mode, so the cache is
  three files. A comment in ClientCacheFactory claimed the opposite;
  reading PRAGMA journal_mode off a real launch settled it. WAL is the
  right mode here — a sync pass writes while the interface reads — so the
  comment was wrong on the merits as well as on the fact.
- Enrolling a device key with nowhere to keep the private half would put a
  wrap on the server nobody can open and make the device list claim this
  machine can unlock without a passphrase. Device binding is now optional
  and the shell declines it until the OS keystore is wired.

Verified on Windows: the client created %LOCALAPPDATA%\DodoSSH\cache.db
and migrated it on first launch, and msedgewebview2 held an established
connection to the data plane while the unlock overlay covered it — which
is the point of covering the WebView rather than collapsing it, since a
NativeWebView that is never laid out is never realised.

630 tests, up from 593. The recovery-code gate and the offline unlock were
each verified by breaking them and watching the right test fail.

Still to do for M1's actual definition of done: the manual run against the
real API and a real Keycloak. Credentials are not a synced entity type
yet, so a connection still asks for a password, and the interface says so
rather than implying otherwise.
2026-07-29 11:02:19 +02:00
jaap-jan a878c2b6bb Add the server client and client-side enrollment
A typed client over DodoSSH.Contracts, and the orchestration that turns a
passphrase into an enrolled identity: generate keys, have the identity
provider sign over them, wrap the bundle three ways, create the personal
vault, publish.

Ordering here is forced, not chosen. The secret bundle's AAD binds to the
server-assigned user id, so /me has to be read before anything can be
wrapped -- which is exactly why /me provisions the account and returns its id
even while reporting that enrollment is required. That constraint was
designed into the server earlier; this is the first code that depends on it.

The grant tuple now has a real canonical encoding (crypto.md 7.3) rather
than the placeholder signature I would otherwise have had to invent and then
keep. §7 named the tuple without specifying how to encode it; this fills that
in with the same conventions as 7.1, and the self-grant at enrollment is
already in its final format. The signature covers SHA-256(wrappedKey) rather
than the key, so a verifier can check attribution without holding the vault
key at all.

The most valuable tests are the negative ones about the request body: the
server is meant to be unable to read what it stores, and a refactor that put
a passphrase or a private key into the enrollment request would be invisible
to every other test in the repository. So one asserts the body contains
neither the passphrase, the recovery code, nor any private key in base64 or
hex. Another opens the same bundle three ways -- passphrase, recovery code and
device key -- which is what makes a passphrase change a one-row update.

ClientEnrollment depends on IKeyBindingAuthorizer rather than the whole
OidcClient. It needs exactly one capability, and depending on the full client
would drag discovery and token exchange into every test of key binding.

Two things fixed while building it. The recovery code buffer was sized one
separator short, so every enrollment threw IndexOutOfRange -- caught
immediately because nine of ten tests failed identically. And the crypto
enum collided with Domain.GrantKind in the server, so it is GrantPurpose
there; the numeric values still have to match, which the doc and a test both
say.

448 tests pass, zero warnings on a clean rebuild, format clean.
2026-07-28 22:42:56 +02:00