Repository QR Code URL does not include protocol

Scanning the QR code that F-Droid shows in the repository information results in a URL all in uppercase. In the BarcodeScanner, the entire URL except HTTPS:// is underlined and recognized as a link. When opening it with F-Droid, it prepends http:// to the URL that is missing the protocol. My repo is only available via https, so adding the repo fails.

Expected behavior: The URL encoded in F-Droid's QR can be opened by F-Droid unchanged.

QR Code as generated by F-Droid:

URL as scanned by Barcode Scanner:

My repo is only available via http, so adding the repo fails.

I assume you mean https here?

I assume you mean https here?

Yes. The repo is public, so this should all be reproducible.

Did you check 0.100.1 and the latest alphas? To see if this is a regression since 0.100.x.

Did you check 0.100.1 and the latest alphas? To see if this is a regression since 0.100.x.

No I didn't check this. I noticed this when exchanging repositories with a larger group of people. Some encountered the problem. Other's didn't.

I could reproduce when scanning a code produced by 0.100.1 though.

Okay, so this isn't a regression then and shouldn't block 0.101.

Milestone changed to %0.102

Despite the milestone, I figured this was pretty low hanging fruit and investigated anyway. This is what is happening:

• We are upper casing URLs before generating QR codes.
• Apparantly this is because uppercase letters can be encoded with a smaller QR code.
• I experimented and found this not to be the case (at least with the QR generator for the swap workflow)
• Below is two screenshots, one with an upper case and one with a mixed case (likely all lower) URL

Regardless of whether it is more compact or not, it is not legal. Consider the following URL:

• https://i.imgur.com/fn33EcW.jpg

The server (rightly) returns a 404 when we change the case of the path:

• HTTPS://I.IMGUR.COM/FN33ECW.JPG
• https://i.imgur.com/fn33ecw.jpg

I'll be pushing a MR which doesn't modify the case of URLs before generating QR codes.

mentioned in merge request !358 (merged)

Thanks Peter for the quick solution! Just to confirm: Did you try if the URL with case unchanged is now properly recognized by the barcode scanner?

I can confirm that it is for the second screenshot you posted.

Yup, it seems good on your repo:

Status changed to closed by merge request !358 (merged)