main
3 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 Raphaël Bosi
|
60f5964c64 |
Run front components in a sandboxed opaque-origin iframe (#22588)
Front components run untrusted third-party React in a Web Worker. That
worker previously shared the host origin, so it could reach
origin-scoped storage (the metadata-store IndexedDB, the
`twenty-sign-out` BroadcastChannel), cookies, and same-origin resources.
This runs the worker inside a `sandbox="allow-scripts"` (no
`allow-same-origin`) iframe, giving it an opaque origin where the
browser denies localStorage, cookies, IndexedDB, and BroadcastChannel
outright. The worker is kept inside the iframe (rather than a bare
iframe) so untrusted code always runs off the main thread; the
remote-dom render path is unchanged.
- **Transport:** host ↔ iframe ↔ worker over a re-transferred
`MessagePort` (`ThreadMessagePort`); a small bootstrap script is inlined
into the iframe via `srcdoc` (bundled at build time by a prebuild step)
and relays the port to the worker it spawns. Messages across the
boundary use a typed discriminated union with a single parse/guard.
- **Network:** under the opaque origin, direct fetches to the Twenty API
would be `Origin: null`, so the component source and SDK modules are
fetched through an allowlisted, credential-omitting `hostFetch` bridge
and blobbed inside the worker. The allowlist is single-sourced on the
host (http(s) origins only) and carried in the render context. The
bridge is mandatory (rendering fails closed if it is missing), refuses
redirects except for GET/HEAD to the known file-storage URLs, and caps
response body size.
- **SDK loading:** SDK client modules now load inside the worker through
the bridge, replacing the host-side SDK-blob state/effect/provider with
a pure `getSdkClientUrls` URL builder.
- **Isolation tests:** a unit test locks the sandbox attribute
(`allow-scripts`, never `allow-same-origin`); a browser test asserts the
worker actually gets an opaque origin with storage denied, probing
cookies by writing one rather than reading an empty jar.
Also adds a "List Companies" seed front component that queries workspace
data via the SDK client (exercising the bridge end-to-end),
single-sources the command-menu confirmation-modal result event name and
detail type in `twenty-shared` (previously a hand-synced duplicate), and
decomposes the renderer (bridge, sandbox, worker orchestration) into
small single-purpose utils with unit tests.
## How it works
```mermaid
sequenceDiagram
autonumber
participant Host as Host window (twenty-front · host origin)
participant Frame as Sandboxed iframe (allow-scripts · opaque origin)
participant Worker as Worker (untrusted component · opaque origin)
participant API as Twenty API (host origin)
rect rgb(238,242,248)
Note over Host,Worker: 1 — Boot handshake
Host->>Frame: create iframe sandbox="allow-scripts", srcdoc = inlined bootstrap script
Host->>Host: MessageChannel + ThreadMessagePort(port1)<br/>exports = host API + hostFetch
Frame-->>Host: READY
Host->>Frame: INIT + transfer port2
Frame->>Worker: spawn inlined Worker + re-transfer port2
Worker->>Worker: ThreadMessagePort(port)<br/>exports = render / updateContext
Note over Host,Worker: Port now entangles Host ↔ Worker directly
end
rect rgb(246,240,248)
Note over Host,Worker: 2 — Render
Host->>Worker: render(connection, { componentUrl, sdkClientUrls, hostFetchOrigins, token })
Worker->>Worker: override globalThis.fetch<br/>(Twenty origins → hostFetch)
end
rect rgb(248,244,238)
Note over Worker,API: 3 — Network via hostFetch bridge (opaque Origin:null cannot reach the API directly)
Worker->>Host: hostFetch(componentUrl, Bearer)
Host->>Host: origin allowlist + credentials:'omit'
Host->>API: fetch(componentUrl)
API-->>Host: source
Host-->>Worker: { status, headers, body }
Worker->>Host: hostFetch(sdkClientUrls.core / .metadata)
Host-->>Worker: SDK module sources
Worker->>Worker: blob each source in its own opaque origin → import() → run untrusted React
end
rect rgb(238,248,242)
Note over Worker,Host: 4 — Render mirror
Worker->>Host: remote-dom mutations (RemoteConnection)
Host->>Host: RemoteReceiver → RemoteRootRenderer → host DOM
end
Note over Worker: Opaque origin ⇒ browser denies localStorage,<br/>cookies, IndexedDB, BroadcastChannel
```
|
||
|
Raphaël Bosi
|
48c540eb6f |
Add event forwarding stories to the front component renderer (#19721)
Add Storybook stories and example components to test event forwarding through the front component renderer: form events (text input, checkbox, focus/blur, submit), keyboard events (key/code/modifiers), and host API calls (navigate, snackbar, progress, close panel) |
||
|
Paul Rastoin
|
37908114fc |
[SDK] Extract twenty-front-component-renderer outside of twenty-sdk ( 2.8MB ) (#19021)
Followup https://github.com/twentyhq/twenty/pull/19010 ## Dependency diagram ``` ┌─────────────────────┐ │ twenty-front │ │ (React frontend) │ └─────────┬───────────┘ │ imports runtime: │ FrontComponentRenderer │ FrontComponentRendererWithSdkClient │ useFrontComponentExecutionContext ▼ ┌──────────────────────────────────┐ ┌─────────────────────────┐ │ twenty-front-component-renderer │────────▶│ twenty-sdk │ │ (remote-dom host + worker) │ │ (app developer SDK) │ │ │ │ │ │ imports from twenty-sdk: │ │ Public API: │ │ • types only: │ │ defineFrontComponent │ │ FrontComponentExecutionContext│ │ navigate, closeSide… │ │ NavigateFunction │ │ useFrontComponent… │ │ CloseSidePanelFunction │ │ Command components │ │ CommandConfirmation… │ │ conditional avail. │ │ OpenCommandConfirmation… │ │ │ │ EnqueueSnackbarFunction │ │ Internal only: │ │ etc. │ │ frontComponentHost… │ │ │ │ front-component-build │ │ owns locally: │ │ esbuild plugins │ │ • ALLOWED_HTML_ELEMENTS │ │ │ │ • EVENT_TO_REACT │ └────────────┬────────────┘ │ • HTML_TAG_TO_CUSTOM_ELEMENT… │ │ │ • SerializedEventData │ │ types │ • PropertySchema │ ▼ │ • frontComponentHostComm… │ ┌─────────────────────────┐ │ (local ref to globalThis) │ │ twenty-shared │ │ • setFrontComponentExecution… │ │ (common types/utils) │ │ (local impl, same keys) │ │ AppPath, SidePanelP… │ │ │ │ EnqueueSnackbarParams │ └──────────────────────────────────┘ │ isDefined, … │ │ └─────────────────────────┘ │ also depends on ▼ twenty-shared (types) @remote-dom/* (runtime) @quilted/threads (runtime) react (runtime) ``` **Key points:** - **`twenty-front`** depends on the renderer, **not** on `twenty-sdk` directly (for rendering) - **`twenty-front-component-renderer`** depends on `twenty-sdk` for **types only** (function signatures, `FrontComponentExecutionContext`). The runtime bridge (`frontComponentHostCommunicationApi`) is shared via `globalThis` keys, not module imports - **`twenty-sdk`** has no dependency on the renderer — clean one-way dependency - The renderer owns all remote-dom infrastructure (element schemas, event mappings, custom element tags) that was previously leaking through the SDK's public API - The SDK's `./build` entry point was removed entirely (unused) |