maltfield

maltfield @lemmy.ml 6mo ago

looks like they're collaborating by giving some of their profits upstream, and creating feature requests

1

maltfield @lemmy.ml 6mo ago

hardened LinaegeOS forks seems like exactly what we need...

maltfield @lemmy.ml 6mo ago

Isn't the whole point that this thing can be upgraded?

Also, Pixel 3 still runs great, once you strip off all the google spyware.

maltfield @lemmy.ml 6mo ago

Yeah, small dutch company that has a good history. They've been making highly customizable laptops for the EU market since 2015. And since 2021, they've been focusing on security and right-to-repair. You can watch an interview with the NovaCustom founder (Wessel Klein Snakenborg) here:

https://techlore.tv/w/hAQNnw9eQndZRJe438DqRF

They're one of very few laptop manufacturers that sell QubesOS certified laptops. And that come with coreboot.

1

maltfield @lemmy.ml 1y ago

That's bad.

OAuth supports several types of flows. If I'm not mistaken (I've learned a bit more about OAuth since yesterday) you're describing the Authorization Code Flow -- as documented in RFC 6749 (The OAuth 2.0 Authorization Framework), Section 4.1 (Authorization Code Grant):

https://www.rfc-editor.org/rfc/rfc6749.html#section-4.1

That RFC defines many other types of flows that do not require sharing the access keys with a third party, such as the Client Credentials Flow, as documented in RFC 6749 Section 4.4 (Client Credentials Grant):

https://www.rfc-editor.org/rfc/rfc6749.html#section-4.4

The only reason you'd want to use the Authorization Code Flow is if the third party needs your access token for some reason, or if you want to hide the access key from the user agent.

The problem here is that Stripe is using the wrong flow (the third party doesn't need the access token, as they claim they never save it anyway). And if keyCloak only supports that one flow, that's would be a problem too (in this case).

maltfield @lemmy.ml 1y ago

Upon further reading of RFC 6749, it appears that OAuth does require this -- sometimes.

It depends on the OAuth Flow. In this case, Stripe uses the “Authorization Code” Grant.

This is documented in Stripe’s OAuth reference documentation here:

    
curl https://connect.stripe.com/oauth/token \
  -u sk_test_MgvkTWK1jRG3olSRx9B7Mmxo: \
  -d “code”=”ac_123456789” \
  -d “grant_type”=”authorization_code”

srouce: https://docs.stripe.com/connect/oauth-reference#post-token-request

Authorization Code Grants are defined in RFC 6749 (The OAuth 2.0 Authorization Framework), Section 4.1 (Authorization Code Grant):

https://www.rfc-editor.org/rfc/rfc6749.html#section-4.1

To better understand why the OAuth Authorization Code Grant requires sharing the access token with a thrid party server, I found this article (Common OAuth Vulnerabilities) by Doyensec very elucidating:

https://blog.doyensec.com/2025/01/30/oauth-common-vulnerabilities.html

It says that the Authorization Code Flow is supposed to be used when you don’t want to share the tokens with the user agent.

The Authorization Code Flow is one of the most widely used OAuth flows in web applications. Unlike the Implicit Flow, which requests the Access Token directly to the Authorization Server, the Authorization Code Flow introduces an intermediary step. In this process, the User Agent first retrieves an Authorization Code, which the application then exchanges, along with the Client Credentials, for an Access Token. This additional step ensures that only the Client Application has access to the Access Token, preventing the User Agent from ever seeing it.

But this doesn't make sense for this use-case. It appears Stripe is needlessly putting us at risk by choosing the Authorization Code Grant.

maltfield @lemmy.ml 1y ago

Stripe Connect does not support Client Credentials flow.

Can you please tell me what is the name of the "flow" that Stripe Connect is using here?

3

maltfield @lemmy.ml 1y ago

I figured out the root technical cause. It's because Stripe doesn't allow the redirect during the OAuth flow to be dynamic. It must be a predefined value that's hard-coded into the app.

For security purposes, Stripe redirects a user only to a predefined URI.

https://docs.stripe.com/connect/oauth-reference#redirect-uri

That's why Stripe forces you to expose your access tokens to the developer's servers.

I'd still appreciate if someone with more experience with OAuth than me knows if this is common. Seems like a very bad design decision to require users to transmit their bearer tokens through the developer's servers.

maltfield @lemmy.ml 1y ago

It’s called the Client Credentials flow (RFC 6749, Section 4.4).

Finally someone directs me to the actual RFC. Except that section is titled "Client Credentials Grant"

https://www.rfc-editor.org/rfc/rfc6749.html#section-4.4

Why do I see this sometimes called a "Grant" and sometimes called a "Flow"?

What's the definition and difference of each?

maltfield @lemmy.ml 1y ago

Thanks, but I don't think this is the case here. The Authentication provider is Stripe (or, at least, it's a stripe.com domain name). The 3rd party is the app developer's server.

Stripe's infra is already PCI compliant.

I'm not sure how a hardware security token would be relevant here. The end result must be something-you-know access token. Initial setup is done with 2FA, sure. But I don't think the server can store (or emulate) a passkey. The issue here isn't how I authenticate with Stripe. It's after that -- when Stripe gives the tokens to the third party (the dev's server) and then the third party gives the token to my server. I don't understand why Stripe doesn't just let the devs implement it so Stripe gives the tokens directly to my server.

maltfield @lemmy.ml 3y ago

Thanks for sharing! How did you find that one? Do you know who runs it? I really, really like that they have an uptime monitor.

maltfield @lemmy.ml 3y ago

how do you do that? Is there a guide anywhere for how to setup mastodon seeing lemmy or lemmy seeing mastodon?

maltfield @lemmy.ml 3y ago

I think at the top, just above the "Recommended"

<h2>

add:

    
For a more detailed comparison of Lemmy instances, see:

<ul>
<li><a href="https://github.com/maltfield/awesome-lemmy-instances">Awesome-Lemmy-Instances on GitHub</a></li>
<li><a href="https://the-federation.info/platform/73">the-federation.info Lemmy Instances Page</a></li>
<li><a href="https://lemmymap.feddit.de/">Feddit's Lemmymap</a></li>
</ul>

After you create an account, you can find communites across all instances using <a href="https://browse.feddit.de/">Feddit's Lemmy Community Browser</a>

<h2>Recommended</h2>
...

2

maltfield @lemmy.ml 3y ago

oh shit I wish I knew that existed before XD

maltfield @lemmy.ml 3y ago

I'm literally just asking the instance's API how many users it has:

https://links.dartboard.social/api/v3/site

Check the users_active_month field. How your instance calculates that is a question for the lemmy devs ;D

2

maltfield @lemmy.ml 3y ago

I see TypeScript and get scared. Personally, I do think that the join-lemmy.org/instances page should link to:

My table comparison https://github.com/maltfield/awesome-lemmy-instances
The Lemmy Community Browser (to find communities across all instances) https://browse.feddit.de/
The Lemmy Map https://lemmymap.feddit.de/
The federation's lemmy page (with another table comparing instances) https://the-federation.info/platform/73

Can anyone with TypeScript experience make this PR for us? Here's the relevant file:

https://github.com/LemmyNet/joinlemmy-site/blob/main/src/shared/components/instances.tsx