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fix: Ensure that bundle URL origin matches debugger page origin #403

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merged 1 commit into from
May 27, 2019
Merged

fix: Ensure that bundle URL origin matches debugger page origin #403

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10 changes: 9 additions & 1 deletion packages/cli/src/commands/server/debugger-ui/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -219,7 +219,15 @@
connectToDebuggerProxy();

async function getBlobUrl(url) {
return await window.deltaUrlToBlobUrl(url.replace('.bundle', '.delta'));
// Ensure that the bundle URL has the same origin as this webpage so that
// the same-origin policy lets us fetch it
const urlObject = new URL(url, location);
const relativeUrl = urlObject.pathname.replace('.bundle', '.delta') +
urlObject.search +
urlObject.hash;
const localUrl = new URL(relativeUrl, location).toString();

return await window.deltaUrlToBlobUrl(localUrl);
}
})();
</script>
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