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feat: add content security policy header #172

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merged 3 commits into from
Aug 15, 2022
Merged

feat: add content security policy header #172

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26f056f
feat: add content security policy header
vasco-santos Aug 12, 2022
df29e91
fix: address review
vasco-santos Aug 12, 2022
05b00e9
fix: extend csp
vasco-santos Aug 12, 2022
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21 changes: 19 additions & 2 deletions packages/edge-gateway/src/gateway.js
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Original file line number Diff line number Diff line change
Expand Up @@ -117,7 +117,7 @@ export async function gatewayIpfs(request, env, ctx, options = {}) {
const responseTime = Date.now() - startTs

options.onCdnResolution && options.onCdnResolution(res, responseTime)
return res
return getTransformedResponseWithCustomHeaders(res)
} else if (
(request.headers.get('Cache-Control') || '').includes('only-if-cached')
) {
Expand Down Expand Up @@ -167,7 +167,7 @@ export async function gatewayIpfs(request, env, ctx, options = {}) {
)

// forward winner gateway response
return winnerGwResponse.response
return getTransformedResponseWithCustomHeaders(winnerGwResponse.response)
} catch (err) {
const responses = await pSettle(gatewayReqs)

Expand Down Expand Up @@ -525,3 +525,20 @@ function getDurableRequestUrl(request, route, data) {
body: data && JSON.stringify(data),
})
}

/**
* Transforms race response with custom headers.
* Content-Security-Policy header specified to only allow requests within same origin.
*
* @param {Response} response
*/
function getTransformedResponseWithCustomHeaders(response) {
const clonedResponse = new Response(response.body, response)

clonedResponse.headers.set(
'content-security-policy',
"default-src 'self' 'unsafe-inline' blob: data: ; form-action 'self' ; navigate-to 'self' "
)

return clonedResponse
}