Add support for email style local account

[mediaformat]

My understanding of the spec is that it is meant to support an email address as a local identifier:

A common scenario is for a user to register with a service provider using an identifier (such as an email address) that is associated with some other service provider. For example, a user with the email address "juliet@capulet.example" might register with a commerce website whose domain name is "shoppingsite.example". In order to use her email address as the localpart of the 'acct' URI, the at-sign character (U+0040) needs to be percent-encoded as described in [RFC3986]. Thus, the resulting 'acct' URI would be "acct:juliet%40capulet.example@shoppingsite.example".

The webfinger.net site doesn't currently support this:

16:05:14 Looking up WebFinger data for acct:bob@alice.com@example.social 16:05:14 GET https://alice.com%40example.social/.well-known/webfinger?resource=acct%3Abob%40alice.com%40example.social 16:05:14 Error getting JRD: parse https://alice.com%40example.social/.well-known/webfinger?resource=acct%3Abob%40alice.com%40example.social: invalid URL escape "%40"

Should I open a PR for this?

[willnorris]

yeah, feel free to open a PR, I suspect it will probably be in https://github.com/webfinger/go-webfinger unless we're messing up the encoding/decoding inside of https://github.com/webfinger/client.webfinger.net ?

[willnorris]

I'm curious, are there any systems that are using email addresses for the local part like this in practice? Would be good to have a concrete test case

[pfefferle]

WordPress! We had an issue for the AP Plugin: https://github.com/pfefferle/wordpress-activitypub/issues/152

[willnorris]

This should now be fixed on webfinger.net