Files
windmill/backend
Diego Imbert 2c0c2c467f fix(apps): make public apps opt into cross-origin isolation via wm_coep (GIT-884) (#9374)
* fix(apps): make public apps opt into cross-origin isolation via wm_coep

Public app pages served at /public/* and custom paths /a/* were not
getting the COEP/COOP/CORP headers, so they were blocked when embedded
as an iframe inside a cross-origin-isolated page (e.g. another raw app,
which sets Cross-Origin-Embedder-Policy: require-corp). A nested
document loaded into a require-corp context must itself set COEP for
the iframe to load.

Rather than applying the isolation headers to all public pages (which
would also force COEP on classic apps and break subresources without
CORP, e.g. external image URLs or embeds), public apps now opt in via
a `wm_coep` query param on the embed URL:

    <iframe src="https://<domain>/public/<ws>/<secret>?wm_coep=on">

The app publish drawer gains a URL/Embed toggle: "URL" shows the plain
shareable link (param-free), "Embed" shows a ready-to-copy iframe
snippet with wm_coep baked in, so the flag is discoverable exactly when
embedding and absent otherwise.

`wm_coep` is consumed internally and stripped from the app `query`
context so it doesn't collide with app-defined params. Only params we
own are stripped (an explicit set), not the whole `wm_` prefix.

Fixes GIT-884

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* nit

* nit

* fix(apps): only bake wm_coep into embed snippet for raw apps

AppEditorHeaderDeploy is shared by the classic (AppEditorHeader) and raw
(RawAppEditorHeader) deploy drawers. The embed snippet unconditionally
appended ?wm_coep=on, which for a classic/low-code app forces COEP
require-corp on the document and breaks no-CORP cross-origin subresources
(external <img> in AppImage/AppStatCard/AppNavbar, {@html} embeds in
AppHtml, CDN import() in AppCustomComponent) — the exact regression the
opt-in design avoids.

Add a `rawApp` prop (default false); the raw header passes rawApp. The
flag is appended only for raw apps; classic apps get a plain iframe
snippet, and the wm_coep helper text is shown only for raw apps.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-05-30 10:05:19 +00:00
..
2026-05-01 20:52:47 +00:00
2026-05-01 20:52:47 +00:00
2026-05-01 20:52:47 +00:00
2026-02-12 13:19:05 +00:00

Windmill Backend

This folder holds all backend components, the src/ folder only contains files used to build the "root" binary.

Components

name description
windmill-api The API server, exposing functionality to other components and the frontend
windmill-audit Contains audit functionality, allowing different components to record important actions
windmill-common Common code shared by all crates
windmill-queue Contains job & flow queuing functionality, commonly written to by the API server and read from by workers
windmill-worker The worker. Used to process and execute flows & jobs.
parsers Contains code to parse signatures in different langauges.

Compile sqlx for offline ci

cargo sqlx prepare --workspace -- --bin windmill --features enterprise