this post was submitted on 23 Jul 2025
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How to enhance Caddy's basic_auth? (lemmy.kde.social)
submitted 5 days ago by tubbadu@lemmy.kde.social to c/selfhosted@lemmy.world
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Hello fellow selfhoster! on my debian server I use Caddy as reverse proxy, and would like to protect some services and files with a password. I would like, however, to be able to access some protected files programmatically, from a script. using Caddy's built-in basic_auth works as intended, but I'd like to be able to use a login form instead of just a browser prompt. This is AFAIK not possible, so I'm looking for alternatives. Any idea?

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[–] tubbadu@lemmy.kde.social 2 points 4 days ago (1 children)

How does programmatic access tie into the desire for a login form?

I would like to keep files with "private" information protected from public access, but I would like to access them from a script. An example: i wrote a karaoke application to use with my friends, they have to go to a webpage and select the songs they like, and then the karaoke app connects to the server to get the updated preference file. I would like that the users had a "nice login form" to select their songs, and then I'd like my karaoke app to easily download the file while still keeping it password-protected

[–] dgdft@lemmy.world 1 points 4 days ago* (last edited 4 days ago)

Yeah, I believe you don’t need to extend Caddy at all for that.

Add a properly-formatted Authorization header to any requests you make to the server and it’ll work. See Wikipedia page for header string format:

https://en.wikipedia.org/wiki/Basic_access_authentication

On the webpage side, I’d have the login form make a POST to your login endpoint using a basic auth header to pull a JWT that acts as a “real” auth key for other pages.

This is all assuming you want to stick with basic auth as opposed to a more heavyweight option.