jlacoste
33 lines
1.6 KiB
Markdown
33 lines
1.6 KiB
Markdown
---
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title: Security
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---
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# Security
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[MODES: framework]
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<br/>
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<br/>
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This is by no means a comprehensive guide, but React Router provides features to help address a few aspects under the _very large_ umbrella that is _Security_.
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## `Content-Security-Policy`
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If you are implementing a [Content-Security-Policy (CSP)][csp] in your application, specifically one using the `unsafe-inline` directive, you will need to specify a [`nonce`][nonce] attribute on the inline `<script>` elements rendered in your HTML.
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Add a nonce to these two spots in [`entry.server.tsx`][entryserver]:
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- The [`<ServerRouter nonce>`][serverrouter] prop
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- This will be proxied along through React Context and used for other Framework Mode components that output `nonce`-aware elements, including [`<Scripts>`][scripts], [`<ScrollRestoration>`][scrollrestoration]
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- If those components specify their own `nonce` prop, it will override the `ServerRouter` value
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- The `nonce` options of [`renderToPipeableStream`][renderToPipeableStream]/[`renderToReadableStream`][renderToReadableStream]
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[csp]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CSP
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[entryserver]: ../api/framework-conventions/entry.server.tsx
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[nonce]: https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/nonce
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[renderToPipeableStream]: https://react.dev/reference/react-dom/server/renderToPipeableStream
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[renderToReadableStream]: https://react.dev/reference/react-dom/server/renderToReadableStream
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[scripts]: ../api/components/Scripts
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[scrollrestoration]: ../api/components/ScrollRestoration
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[serverrouter]: ../api/framework-routers/ServerRouter
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