Change initial Spring OAuth2 redirection | Together Java | Page 1

rustic otter Apr 13, 2023, 8:27 PM

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Hello. I'm running a Spring Boot application that uses OAuth2 to authenticate users behind a Spring Cloud Gateway, hence I need to change the url of basically every redirection that happens to go through the gateway, as in production there will be no direct access to the application from the internet.

I've found spring.security.oauth2.client.registration.github.redirect-uri and already set that accordingly, which works fine.
My issue currently is that when visiting myGateway/protectedResource I get redirected to myApp/oauth2/authorization/github, which I need to change to myGateway/oauth2/authorization/github.

Does anyone know how I can change this?

regal falconBOT Apr 13, 2023, 8:27 PM

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<@&1004656351647117403> please have a look, thanks.

regal falconBOT Apr 13, 2023, 8:27 PM

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regal falcon <@&1004656351647117403> please have a look, thanks.

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regal fog Apr 13, 2023, 8:38 PM

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Is the redirect uri configurable for myApp?

rustic otter Apr 13, 2023, 8:48 PM

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What do you mean by that?
Inside of myApp, I have set spring.security.oauth2.client.registration.github.redirect-uri to myGateway/login/oauth2/code/github, which works properly. I need to change the initial redirect though.

Hopfully the attached screenshot should clear things up. myGateway is at localhost:8081, which is effectively routing all traffic to myApp, running at localhost:9091. You can see that with a request to myGateway/protectedResource (in this case /admin), I get redirected to myApp/oauth2/authorization/github as the very first step, however I want this redirection to go to myGateway, and so become http://localhost:8081/oauth2/authorization/github

regal fog Apr 13, 2023, 8:53 PM

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Mmh and you see this redirect happen at the myApp server?

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(like, is there a log entry for it)

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Oh, you probably need to configure the login URL as well

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(I had to look for the correct term)

rustic otter Apr 13, 2023, 9:05 PM

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regal fog Mmh and you see this redirect happen at the myApp server?

Yes, this redirect happens at the myApp server. I'll have a look for how to configure the login URL, I couldn't find the correct term

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Ok, I've changed the authorization endpoint's baseUri to be kt authorizationEndpoint().baseUri("http://localhost:8081/oauth2/authorization") , which does work, and the first request now redirects me to http://localhost:8081/oauth2/authorization/github as expected.

The new issue though, is that myApp/oauth2/authorization/github returns a 404 from myApp. Is this because Spring is trying to listen at http://localhost:8081/oauth2/authorization/github now rather than keeping its old endpoints?

regal fog Apr 13, 2023, 9:27 PM

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Possibly. Is there a reason you're not handling oauth at the gateway instead?

rustic otter Apr 13, 2023, 9:28 PM

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Not really, I just created the gateway last, once I already had oauth working in myApp. I didn't realise that was a thing I could actually do

rustic otter Apr 13, 2023, 9:45 PM

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I suppose I'll have to bite the bullet and look into that then, thanks for the help @regal fog. I'll close in a second

#Change initial Spring OAuth2 redirection