Is it possible to override `window.location.protocol` ? #298

malaire · 2026-06-13T16:12:54Z

malaire
Jun 13, 2026

I'd like to use obscura to list assets of webpages. I'm giving obscura file: URL but I need the assets list to reflect what assets would be if protocol was http: instead of file:. The problem is that this webpage acts differently based on window.location.protocol.

Is there any way to override window.location.protocol to be http: when giving obscura file: URL?

Example command:

./obscura fetch file:///path/to/index.html --dump assets

Example page:

<!DOCTYPE html>
<html><head>
<meta charset="utf-8">
<title>Test</title>
<script>if(window.location.protocol!=="file:")
document.head.insertAdjacentHTML("beforeend","SomeFont.woff2,OtherFont.woff2".split(",")
.map(f=>`<link rel="preload" as="font" type="font/woff2"href="static.files/${f}">`).join(""))
</script></head><body>Test</body></html>

malaire · 2026-06-14T07:25:09Z

malaire
Jun 14, 2026
Author

Thinking this a bit more, this really should be implemented by mapping a (fake) http(s) URL to file: URL, e.g. http://example.com/foo/* <-> file:///some/path/*. While I'd love to have such a feature in obscura, I understand if this is out of scope - I probably should just use a tiny webserver for this.

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malaire Jun 14, 2026 Author

Is it possible to override `window.location.protocol` ? #298

malaire
Jun 13, 2026

malaire
Jun 14, 2026
Author