Support multiple domains?

[skpy]

I have several sites on which I would like to use selfauth. I could install it individually on each site, but that becomes a bit tedious over time.

How hard would it be to allow the config.php to contain an array of permissible domains, with their associated hashes?

Making the lookup wouldn't be too hard, and I'm happy to submit a PR for that part. The UI for setup.php could either have a hard-coded list of X elements, to which you'd leave unused ones blank; or it could use some (simple?) JS to support a "Add another site" button to add another set of text fields.