138ab7306e
3 Commits
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jx12n
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d7cd57f330 |
serve the MCP install instructions at /mcp
Some checks failed
ci/woodpecker/push/woodpecker Pipeline failed
Using hush from an agent needed a clone and docs/MCP.md. It now needs one
command, and the instructions are served by the deployment itself.
`go install github.com/orchard9/hush/cmd/hush-mcp@latest` is the whole
install: cmd/hush-mcp imports only the standard library, so module graph
pruning never reaches the private go-chassis dependency cmd/hushd needs.
Verified against an empty module cache and the public proxy, then create ->
reveal end to end against production with the resulting binary.
The page carries the per-client configuration for Claude Code, Codex CLI,
Gemini CLI, VS Code, Claude Desktop, Cursor and omp. Each command was run
against the installed client rather than copied from documentation, which is
how the differences on it are there at all: VS Code's wrapper key is
`servers`, not `mcpServers`; gemini defaults to project scope, not user;
Claude Code rejects `--env` immediately before the server name.
The shared browser crypto moves from base.html into templates/crypto.html,
which the two pages that encrypt parse and this one does not. An empty
`{{define}}` cannot replace a non-empty one — text/template reads an empty
body as no definition — so the shell holds the call and the partial holds the
code, and the docs page ships no script at all.
Three things this exposed, fixed here:
- The public Ingress enumerates paths, so a handler without one 404s at the
edge while working in `make dev`. The Ingress is now its own manifest:
hush.yaml pins a `:bootstrap` image that does not exist, so re-applying it
to publish a path would roll the workload onto an unpullable image.
`make deploy-ingress` applies the route alone.
- release.sh guarded HEAD against `@{upstream}`, which is the GitHub mirror
here, while Kaniko clones Gitea. A commit pushed to one and not the other
would have built the previous commit silently. It now fetches and compares
the branch that actually gets built.
- smoke.sh checks that /mcp serves the install command, so a stale rollout or
an unexecutable template fails the release instead of being found later.
Confirmed it fails: against production before this deploy it reported 404.
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jx12n
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d32283e36a |
make release: deployment that needs no CI credential
Woodpecker is not activated for this repo — the WOODPECKER_API_TOKEN in
rdev-credentials returns 401 on /api/user, so it is the token and not the
request shape, and minting a new one needs a browser login I cannot do. That
left `git push` silently not deploying, which is a trap for whoever pushes next.
So `make release` does what the pipeline's build and deploy steps do: a Kaniko
Job for an amd64 image from the pushed git ref, `kubectl set image`, rollout,
then the production smoke. When Woodpecker is activated this becomes redundant,
and stays useful as the manual path for a hotfix or a rollback when CI is down.
Two refusals in it are the interesting part, both for failures that are
otherwise silent:
* A dirty or unpushed tree is refused. Kaniko builds from the GIT CONTEXT, not
the working tree, so uncommitted work would produce an image that does not
contain it while every log line says success.
* After the rollout it asserts the live image equals the one just built.
`kubectl set image` matching no container is silent, and the rollout then
"succeeds" against the old pod.
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jx12n
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4d9a26498e |
hush: one-time secret links the server cannot read
Paste a secret, get a link, send it. The first person to open it and press
Reveal sees the secret; the link dies at that moment. The recipient needs a
browser and nothing else — no account, no client, no installed tooling.
The server cannot read what it stores. AES-256-GCM happens in the browser and
the key lives in the URL fragment, which browsers never transmit, so hushd
holds ciphertext and no key material. That is a property of where the key sits
rather than a promise about our conduct, which is why there is deliberately no
endpoint accepting a plaintext secret and no server-side-encryption fallback:
two guarantees behind one URL would be worse than one honest guarantee.
Three decisions carry the design:
* GET /s/{id} touches NO storage, not even to check existence. Slack, Teams,
WhatsApp, iMessage and Outlook Safe Links all fetch a URL before a human
sees it, so destroying on GET would destroy most secrets in transit and the
recipient's "already used" would be indistinguishable from interception.
Only POST /reveal consumes. Bot user-agent detection is an arms race;
removing the side effect from GET is not. Pinned by
TestGettingTheRevealPageNeverConsumesTheSecret.
* Destruction is one Redis GETDEL, which is atomic. GET-then-DEL has a window
where two simultaneous readers both win, and for a one-time secret that
window is the product. The store contract demands atomicity and the same
concurrency test runs against both implementations.
* Missing, already-revealed, expired and evicted are ONE indistinguishable
410. Separating them would confirm to a prober that a given link was real.
The secret id IS the capability, so secret.ID is a struct whose every
accidental path — %v, %s, String(), slog, json.Marshal — emits a redacted
handle or refuses, and the raw value needs an explicit Value(). The first
version tried to prevent leaks by implementing no String() at all; its own test
caught that Go's fmt prints unexported fields anyway, so forbidding the method
had removed the control rather than the leak.
Operationally: structured JSON on stdout in the fleet's wire format, which
Vector already collects with no annotation; six hush_* metrics on the chassis
registry with no id, IP or path in any label; five alert rules wired into
vmalert. The public Ingress enumerates /, /s/ and /api/ so /metrics, /healthz
and /readyz share the port but are unreachable from the internet — no
basic-auth middleware to maintain and get wrong.
Dependencies are vendored because go-chassis is private: the Woodpecker test
step and the in-cluster Kaniko build both run -mod=vendor with GOPROXY=off and
hold no git credential.
cmd/hush-mcp is a stdio MCP server doing the same client-side crypto locally,
so using hush from an agent preserves the same guarantee as using it from a
browser.
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