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Free the terminal from the Hosts screen, and fill the room it left

Browse Source 
The WebView sat inside the Hosts grid, so navigating to Files or the keychain
hid every open terminal and the strip that named them. A connection you had
opened was invisible from four of the five screens. The window now has two
surfaces rather than one: a nav rail that says which page you are on, and a
terminal strip that is always there and switches the whole content area to a
shell. Screen keeps meaning "which page" and never becomes a sixth kind of
page, which is why this is two properties instead of one enum with a terminal
member in it.

Every screen lives inside one wrapper panel that collapses when a terminal is
showing. That is not tidiness — the WebView hosts a Win32 child window that
composites above everything Avalonia draws, so a screen left visible over its
rectangle is a screen sliced in half, and this window has shipped that defect
once already. One decision point, IsTerminalShowing, and a nested panel rather
than five compound bindings nobody would remember to extend.

The focus choreography is the part no test in this repo can see. Every reveal
path now focuses in the same turn the WebView appeared, so all three of them
post at DispatcherPriority.Loaded and let the native control re-push its bounds
first. Going the other way had a real bug: the screen-changed branch called a
bare Focus() where it had to release the keyboard from the native child, so
switching from a terminal to Files silently ate the first keystrokes. Rare
before this commit and the primary gesture after it.

The tab strip grew a cross inside each tab, a plus that opens the quick-connect
palette, and middle-click close. Nested buttons are correct here: Avalonia
handles a left press on the cross and deliberately does not handle other
buttons, which is exactly what lets middle-click bubble up from the cross as
well as the tab. The test is PointerUpdateKind rather than
IsMiddleButtonPressed, because the latter reports button state and is also true
for a left press made while the middle button happens to be held. The handler
is on the tab and not the strip, so the background closes nothing by
construction. Plus opens the palette rather than a flyout, since a menu
dropping into the WebView's rectangle may or may not composite above a child
HWND and this repo does not make rendering claims it has not photographed.

Everything a user reads now says keychain. The wire, the database and the
cryptographic spec still say vault, deliberately: renaming those is a migration
and a protocol change for a word. That split is written down rather than left
to be rediscovered as an inconsistency.

Four things that were squeezed into the keychain's category rail, or into
nothing at all, now have screens. Pinned host keys get one, with fingerprints
never truncated and a filter that matches them, because comparing what you have
against what the operator published is the whole workflow; the approved date is
read out of the item's UUIDv7 rather than added as a column, and says so, since
it means first approval and not last use. Keys can be generated in the client,
which needed the openssh-key-v1 container written by hand — there is no BCL or
NSec helper, and the PKCS#8 route is unverified in the SSH library this uses.
The armour carries no passphrase: encrypting it needs bcrypt_pbkdf, which is
Blowfish with a swizzle, in a project whose crypto is otherwise entirely
libsodium, for a protection the key's own remarks argue is redundant inside a
vault. Generation fills the existing editor and stops, so SAVE stays the one
thing that writes. ~/.ssh/config can be imported behind a preview that is
ticked per row and writes nothing until the button; IdentityFile records the
path and imports the key material only on an explicit opt-in, because reading
somebody's private key into a vault is precisely the act this product exists to
make deliberate. Match blocks and ProxyJump are reported rather than obeyed —
one cannot be evaluated statically and the other has nothing behind it to route
with, and a preview that implied otherwise would be worse than one that admits
it.

Files can be dragged in all four directions that are honestly available. Remote
to Explorer does not ship and is not pretended to: the shell wants the bytes
during the drop, which needs a virtual file and a native COM data object,
outside what Avalonia offers. Note for the next person that Avalonia 12
replaced the drag model outright — DataObject and DataFormats are no-op stubs
and IDataObject is not in the reference assembly, so every tutorial written for
11 does not compile here.

Hosts can be grouped, flat and never nested. A parent id merged as a scalar
lets two offline clients each re-parent A under B and B under A, producing a
cycle inside an encrypted payload that no server can police and every reader
would have to detect for ever. Membership lives in that payload rather than in
the one plaintext concession ADR 0001 allows, whose test is that the relay
cannot function without it — nothing on the server reads a group, so what
plaintext would hand over is a clustering of the estate for nothing. The
plaintext column reserved for it is dropped, provably always null, and the
server now refuses a client that sends one; it was never populated, was copied
on apply, and was not cleared on delete, so a group id would have outlived the
host it described.

Snippets insert through xterm rather than through the pump, because xterm is
the only thing that knows whether the remote has bracketed paste on, and that
is what makes a shell treat embedded newlines as text instead of as execute.
The host process moves opaque bytes and never parses output, so it would have
to guess, and guessing wrong runs every line. Running is off by default and the
copy says the text goes into whatever is there — the terminal has no notion of
being at a prompt, and may be in vi or at a password prompt with echo off, so
the Enter the user presses themselves is the entire safety property.

Connections and keychain changes are recorded as synced encrypted items, which
is what makes them auditable by a team later and costs the server knowledge of
connection rate and timing from row counts alone. ADR 0001 already concedes it
cannot hide that class of metadata; the trade is now written into it rather
than left implicit. A connection entry is written once, at close, which is what
makes a synced log tractable: nothing to merge, one outbox row, no chance of
colliding with itself. Live sessions come from memory, not from the log. The
write is void by contract and posts to a bounded channel, because putting an
encrypt-and-write on the teardown path of every session is how closing the
application comes to take four seconds. A ticket opened before a lock still
closes afterwards, since a shell outlives the vault. The activity log hooks the
one generic repository every kind writes through, so it cannot miss a caller —
which is also why the log kinds themselves declare they are not audited, or the
first entry would write an entry about writing an entry. It records the names
of the fields that changed and never their values; a log with an old password
in it would be a plaintext credential store with no vault around it. Retention
is 90 days or 5,000 entries, whichever bites first, pruned on the sync loop
rather than on a second timer.

That log traffic then broke the status line, which is worth recording because
the fix is a shape and not a patch: background sync counted its own log rows as
pushed items, so the quiet rule stopped being quiet and every action's message
was overwritten a second later by a sync report. The report now separates log
rows from user items and the rule reads the latter.

S3 buckets appear as a remote in the file browser, behind the same interface an
SFTP session implements, so the queue and both panes did not have to learn what
they are talking to. Uploads go through a pipe, because the queue wants to
write and the SDK wants to read; memory is then bounded by the part size
instead of buffering a file to disk twice.

Finally, the Windows device key store moved out of the session project, which
was the one thing keeping it from being portable — everything else in it is
platform-neutral, and a Windows CNG dependency in the middle of the vault code
meant a second head could not reference it without dragging Windows along. The
seam that made the move free was already there. docs/android-port.md is the
audit behind that: what ports, what does not, in order of cost, the four
decisions taken, and an inventory of every screen and state the interface has
to carry, written so a design can be made from it directly.

dotnet build, dotnet test and dotnet format --verify-no-changes are all clean:
1240 tests at zero warnings, including the end-to-end suite against real
containers. The manual checks that headless Avalonia cannot make — the drag
from Explorer, a generated key against a real host, twelve tabs at the minimum
window width — are listed in docs/manual-checks.md and are still outstanding.
This commit is contained in:
jaap-jan
2026-07-31 20:30:05 +02:00
parent 1292084af9
commit d07b336868
163 changed files with 24491 additions and 647 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tests/DodoSSH.Api.Tests/SyncEndpointTests.cs
+325
View File
@@ -836,6 +836,269 @@ public sealed class SyncEndpointTests(ApiFixture fixture)
result.Detail.ShouldNotBeNull().ShouldContain("inside its payload");
}
/// <remarks>
/// Both log kinds at once, because they are the same shape and the property worth pinning is shared: an
/// entry goes up as ciphertext and comes back with no plaintext field of any sort. A log is the one thing
/// here whose <em>timestamps</em> would be genuinely useful to the server and are exactly what it must not
/// have — a <c>started_at</c> column is a record of when each user works.
/// </remarks>
[Theory]
[InlineData(SyncEntityType.ConnectionLogEntry)]
[InlineData(SyncEntityType.ActivityLogEntry)]
public async Task ALogEntry_RoundTripsAsCiphertextWithNoPlaintextAtAll(SyncEntityType type)
{
var (subject, vaultId) = await SeedUserWithVaultAsync();
var client = fixture.CreateClientFor(subject);
var entryId = Guid.CreateVersion7();
var pushed = await client.PostContractAsync(
PushUrl(vaultId),
new SyncPushRequest([LogOperation(type, entryId, expectedVersion: null, envelope: [1, 1])]));
var results = await pushed.Content.ReadContractAsync<SyncPushResponse>();
results!.Results.ShouldHaveSingleItem().Status.ShouldBe(SyncOperationStatus.Applied);
var pulled = await client.PostContractAsync(
PullUrl(vaultId),
new SyncPullRequest(null, null, [type]));
var page = await pulled.Content.ReadContractAsync<SyncPullResponse>();
var change = page!.Changes.ShouldHaveSingleItem();
change.EntityType.ShouldBe(type);
change.EntityId.ShouldBe(entryId);
change.Payload.ShouldNotBeNull().Envelope.ShouldBe([1, 1]);
change.PlaintextFields.ShouldBeNull("when a user connects is not something this server keeps");
}
/// <remarks>
/// <c>Kind</c> is the field a client would most plausibly fill in on an activity entry — it names which
/// sort of item the entry is about, and it is right there in the contract. A column recording that
/// somebody created four SSH keys last Tuesday describes the keychain out of facts that each look
/// harmless, so it is refused rather than dropped.
/// </remarks>
[Theory]
[InlineData(SyncEntityType.ConnectionLogEntry)]
[InlineData(SyncEntityType.ActivityLogEntry)]
public async Task ALogEntryCarryingAnythingInTheClear_IsRejected(SyncEntityType type)
{
var (subject, vaultId) = await SeedUserWithVaultAsync();
var client = fixture.CreateClientFor(subject);
var operation = LogOperation(type, Guid.CreateVersion7(), null, [1])
with
{ PlaintextFields = new SyncPlaintextFields(Kind: 3, RelatedId: Guid.CreateVersion7()) };
var pushed = await client.PostContractAsync(PushUrl(vaultId), new SyncPushRequest([operation]));
var result = (await pushed.Content.ReadContractAsync<SyncPushResponse>())!.Results
.ShouldHaveSingleItem();
result.Status.ShouldBe(SyncOperationStatus.Invalid);
result.Detail.ShouldNotBeNull().ShouldContain("inside its payload");
}
/// <remarks>
/// The endpoint is the field a client might reach for, and it is the one that must not go: for everybody
/// self-hosting it is an address on their own network, which is exactly what the host table only holds in
/// the clear when the relay cannot work without it.
/// </remarks>
[Fact]
public async Task ABucket_RoundTripsAsCiphertextWithNoPlaintextAtAll()
{
var (subject, vaultId) = await SeedUserWithVaultAsync();
var client = fixture.CreateClientFor(subject);
var bucketId = Guid.CreateVersion7();
var pushed = await client.PostContractAsync(
PushUrl(vaultId),
new SyncPushRequest(
[BucketOperation(bucketId, expectedVersion: null, envelope: [9, 9])]));
var results = await pushed.Content.ReadContractAsync<SyncPushResponse>();
results!.Results.ShouldHaveSingleItem().Status.ShouldBe(SyncOperationStatus.Applied);
var pulled = await client.PostContractAsync(
PullUrl(vaultId),
new SyncPullRequest(null, null, [SyncEntityType.ObjectStore]));
var page = await pulled.Content.ReadContractAsync<SyncPullResponse>();
var change = page!.Changes.ShouldHaveSingleItem();
change.EntityType.ShouldBe(SyncEntityType.ObjectStore);
change.EntityId.ShouldBe(bucketId);
change.Payload.ShouldNotBeNull().Envelope.ShouldBe([9, 9]);
change.PlaintextFields.ShouldBeNull("where a user keeps their data is not something this server keeps");
}
[Fact]
public async Task ABucketCarryingItsEndpointInTheClear_IsRejected()
{
var (subject, vaultId) = await SeedUserWithVaultAsync();
var client = fixture.CreateClientFor(subject);
var operation = BucketOperation(Guid.CreateVersion7(), null, [1])
with
{ PlaintextFields = new SyncPlaintextFields(RelayEnabled: true, Hostname: "minio.internal", Port: 9000) };
var pushed = await client.PostContractAsync(PushUrl(vaultId), new SyncPushRequest([operation]));
var result = (await pushed.Content.ReadContractAsync<SyncPushResponse>())!.Results
.ShouldHaveSingleItem();
result.Status.ShouldBe(SyncOperationStatus.Invalid);
result.Detail.ShouldNotBeNull().ShouldContain("stays encrypted");
}
[Fact]
public async Task AHostGroup_RoundTripsAsCiphertextWithNoPlaintextAtAll()
{
var (subject, vaultId) = await SeedUserWithVaultAsync();
var client = fixture.CreateClientFor(subject);
var groupId = Guid.CreateVersion7();
var pushed = await client.PostContractAsync(
PushUrl(vaultId),
new SyncPushRequest(
[HostGroupOperation(groupId, expectedVersion: null, envelope: [7, 7])]));
var results = await pushed.Content.ReadContractAsync<SyncPushResponse>();
results!.Results.ShouldHaveSingleItem().Status.ShouldBe(SyncOperationStatus.Applied);
var pulled = await client.PostContractAsync(
PullUrl(vaultId),
new SyncPullRequest(null, null, [SyncEntityType.HostGroup]));
var page = await pulled.Content.ReadContractAsync<SyncPullResponse>();
var change = page!.Changes.ShouldHaveSingleItem();
change.EntityType.ShouldBe(SyncEntityType.HostGroup);
change.EntityId.ShouldBe(groupId);
change.Payload.ShouldNotBeNull().Envelope.ShouldBe([7, 7]);
change.PlaintextFields.ShouldBeNull(
"how a user files their machines is not something this server keeps");
}
/// <remarks>
/// <para>
/// <b>The regression guard for the decision that group membership stays encrypted.</b>
/// <c>SyncPlaintextFields.GroupId</c> cannot be removed — the wire contract is frozen — and the server
/// used to copy it into a column. Nothing ever sent one, so the column was dropped rather than migrated;
/// this is what stops a later client filling the field in and finding it silently accepted.
/// </para>
/// <para>
/// Run for a relay host as well as an ordinary one, because the check has to sit ahead of the relay branch
/// to apply to both — and the relay branch returns early on its happy path, so a check written after it
/// would pass this test in the <see langword="false"/> case and let the value through in the other.
/// </para>
/// </remarks>
[Theory]
[InlineData(true)]
[InlineData(false)]
public async Task AHostCarryingItsGroupInTheClear_IsRejected(bool relayEnabled)
{
var (subject, vaultId) = await SeedUserWithVaultAsync();
var client = fixture.CreateClientFor(subject);
var fields = relayEnabled
? new SyncPlaintextFields(
RelayEnabled: true,
Hostname: "db.internal",
Port: 22,
GroupId: Guid.CreateVersion7())
: new SyncPlaintextFields(GroupId: Guid.CreateVersion7());
var operation = NewOperation(Guid.CreateVersion7(), null, [1]) with { PlaintextFields = fields };
var pushed = await client.PostContractAsync(PushUrl(vaultId), new SyncPushRequest([operation]));
var result = (await pushed.Content.ReadContractAsync<SyncPushResponse>())!.Results
.ShouldHaveSingleItem();
result.Status.ShouldBe(SyncOperationStatus.Invalid);
result.Detail.ShouldNotBeNull().ShouldContain("inside its encrypted payload");
}
[Fact]
public async Task AHostGroupCarryingAParent_IsRejected()
{
// Groups are flat. A client that grew a tree would reach for ParentId, and the refusal is what stops
// it storing one — a cycle assembled from two offline re-parents has no repair path, because the
// pointers the server would have to check are inside payloads it cannot read.
var (subject, vaultId) = await SeedUserWithVaultAsync();
var client = fixture.CreateClientFor(subject);
var operation = HostGroupOperation(Guid.CreateVersion7(), null, [1])
with
{ PlaintextFields = new SyncPlaintextFields(ParentId: Guid.CreateVersion7()) };
var pushed = await client.PostContractAsync(PushUrl(vaultId), new SyncPushRequest([operation]));
var result = (await pushed.Content.ReadContractAsync<SyncPushResponse>())!.Results
.ShouldHaveSingleItem();
result.Status.ShouldBe(SyncOperationStatus.Invalid);
result.Detail.ShouldNotBeNull().ShouldContain("flat");
}
[Fact]
public async Task ASnippet_RoundTripsAsCiphertextWithNoPlaintextAtAll()
{
var (subject, vaultId) = await SeedUserWithVaultAsync();
var client = fixture.CreateClientFor(subject);
var snippetId = Guid.CreateVersion7();
var pushed = await client.PostContractAsync(
PushUrl(vaultId),
new SyncPushRequest(
[SnippetOperation(snippetId, expectedVersion: null, envelope: [8, 8])]));
var results = await pushed.Content.ReadContractAsync<SyncPushResponse>();
results!.Results.ShouldHaveSingleItem().Status.ShouldBe(SyncOperationStatus.Applied);
var pulled = await client.PostContractAsync(
PullUrl(vaultId),
new SyncPullRequest(null, null, [SyncEntityType.Snippet]));
var page = await pulled.Content.ReadContractAsync<SyncPullResponse>();
var change = page!.Changes.ShouldHaveSingleItem();
change.EntityType.ShouldBe(SyncEntityType.Snippet);
change.EntityId.ShouldBe(snippetId);
change.Payload.ShouldNotBeNull().Envelope.ShouldBe([8, 8]);
change.PlaintextFields.ShouldBeNull("what a user runs is not something this server keeps");
}
[Fact]
public async Task ASnippetCarryingTheHostItIsScopedTo_IsRejected()
{
// Host scoping is not in the first version of snippets, and RelatedId is where a client would put it.
// Refused rather than dropped: the field would tell the operator which commands belong to which
// machine, which is the clustering the payload exists to keep out of their hands.
var (subject, vaultId) = await SeedUserWithVaultAsync();
var client = fixture.CreateClientFor(subject);
var operation = SnippetOperation(Guid.CreateVersion7(), null, [1])
with
{ PlaintextFields = new SyncPlaintextFields(RelatedId: Guid.CreateVersion7()) };
var pushed = await client.PostContractAsync(PushUrl(vaultId), new SyncPushRequest([operation]));
var result = (await pushed.Content.ReadContractAsync<SyncPushResponse>())!.Results
.ShouldHaveSingleItem();
result.Status.ShouldBe(SyncOperationStatus.Invalid);
result.Detail.ShouldNotBeNull().ShouldContain("inside its payload");
}
[Fact]
public async Task ThreeItemTypesWithOneId_AreThreeSeparateItems()
{
@@ -1027,6 +1290,68 @@ public sealed class SyncEndpointTests(ApiFixture fixture)
Payload(envelope),
PlaintextFields: null);
/// <remarks>
/// Narrow for the same reason as the two above, and the field it most conspicuously does not carry is the
/// one named after the type: a group's name is inside the envelope, and so is its membership.
/// </remarks>
private static SyncPushOperation HostGroupOperation(
Guid entityId,
int? expectedVersion,
byte[] envelope) =>
new(
Guid.CreateVersion7(),
SyncEntityType.HostGroup,
entityId,
SyncOperation.Upsert,
expectedVersion,
Payload(envelope),
PlaintextFields: null);
private static SyncPushOperation SnippetOperation(
Guid entityId,
int? expectedVersion,
byte[] envelope) =>
new(
Guid.CreateVersion7(),
SyncEntityType.Snippet,
entityId,
SyncOperation.Upsert,
expectedVersion,
Payload(envelope),
PlaintextFields: null);
/// <remarks>
/// One helper for both log kinds, because they differ by exactly one enum value — which is the point:
/// anything that were true of one and not the other would be a difference nothing else in the design
/// asks for.
/// </remarks>
private static SyncPushOperation LogOperation(
SyncEntityType type,
Guid entityId,
int? expectedVersion,
byte[] envelope) =>
new(
Guid.CreateVersion7(),
type,
entityId,
SyncOperation.Upsert,
expectedVersion,
Payload(envelope),
PlaintextFields: null);
private static SyncPushOperation BucketOperation(
Guid entityId,
int? expectedVersion,
byte[] envelope) =>
new(
Guid.CreateVersion7(),
SyncEntityType.ObjectStore,
entityId,
SyncOperation.Upsert,
expectedVersion,
Payload(envelope),
PlaintextFields: null);
private static SyncPushRequest NewCreateBatch() =>
new([NewOperation(Guid.CreateVersion7(), expectedVersion: null, envelope: [1, 2, 3, 4])]);