OAuth in Spring security question to get userInfo - spring-boot

My application has frontend build with angular and backend build with spring boot, and I use openam by Forgerock as an authentication server. I got the access_token in frontend and pass this access_token to backend through Bearer authentication, But now I have to check if the token is valid in backend by calling /userInfo endpoint. My question is how to config in spring boot to call this endpoint everytime when get the request? Thanks

I may case I didn't had any explicit configuration for access token. You just have to call end points and the tokens will be stored in the header for authentication. Though you can set the timer for it.

Related

how do I design my authenticated requests and my frontend

i am currently working on a project where my backend uses Spring Boot, Spring security + keycloak and runs on localhost:8081.
My frontend (svelte) runs on http://127.0.0.1:5173/ and the url http://127.0.0.1:5173/products needs to access data from localhost:8081/products (which needs a login) but the login page from keycloak doesnt appear.
In other words, what i am trying to achieve:
I want that the url http://127.0.0.1:5173/products redirects to localhost:8081/products which redirects to keycloak login page and after a successfull login i want to return to http://127.0.0.1:5173/products where i will be able to see the data.
is there an elegant solution to this problem? Im really stuck on this problem and this is one of my first projects.
Thanks in advance!!
Some OAuth2 wording:
Keycloak is an authorization-server (OIDC complient)
Svelte app is a client
Spring REST API is a resource-server
Ensure that a "public" client is declared in Keycloak.
Configure your Svelte client with an existing OIDC lib (component) of your choice to:
use the "public" client deckared in Keycloak
authenticate users against Keycloak (socket is not the same as spring API)
add an authorization header with a JWT access-token retrieved from Keycloak (when issuing requests to your secured REST endpoints)
Configure Spring API as a secured resource-server with a JWT decoder.
You can refer to this article for configuring Keycloak and resource-server with JWT access-tokens.

How do I implement the basic authentication in Spring Cloud API Gateway?

I have 2 secured resource microservices and 1 authentication service and another API Gateway.
Authentication service can generate JWT Token given username and password. It also can validate a JWT token.
So, I want to implement security at the API Gateway only such that on receiving a request, it will first fetch a bearer token from the authentication service and forward the request to the secured resource service. I would like to get some idea how to implement that in API Gateway. Should I make it just in an aggregate fashion, like it would be a sync call which will first make a request to auth service and next forward the request to resource service?
Now, if I want to add the support of OAuth as well, which I know the spring cloud API Gateway already has the support for this via global filters.
But, I am wondering about the legacy bearer token which is generated by the custom authentication service.. How do I ensure this?
Any suggestion would be appreciated.
Thanks in advance!

Keycloak: Spring Boot project as bearer and reusing token from user

I am building an application with an angular frontend and spring boot on the backend. I was able to configure the angular and spring part.
So, the frontend requests a token and sends it with every request to the java backend. This works just fine.
My java backend is now in the need to reuse the client token to request data from another service, which uses the same mechanism.
What is the right way to go forward? Requesting an own token for my service or using the existing token from the authenticated user?
I have not found a way to do this.
Works as pointed out by ravthiru
While calling your 3rd service you can use the same token , Add your third service as bearer-only Client.

Spring sso oauth2 client unable to request for access token

on spring boot 1.4, using #EnableOAuth2Sso for sso client and a kong third party authorization server, i'm able to receive the authorization code but unable to retrieve the access token.
the authorization code is part of the redirect url after which is there any configuration or a process for retrieving the access token?
Once you get the Authz code, you need to make a server side call(so that access token flow doesn't go through end user browser) to Authz Server for access_token, Look at this section of OAuth 2.0 Spec.

Spring boot, security starter and OAuth2 client

I'm using Spring Boot with web and security starter dependencies, and spring-security-oauth2. I'm trying to secure a REST API with a remote (Openstack Keystone) OAuth2 provider.
So far I've managed to correctly fetch an access_token but when it comes to getting the user information I get a 404 not found, as it seems that the OS provider expects the access_token to be provided in the request parameters.
I can't figure out how to persuade the OAuth2RestTemplate class to append the access_token to the security.oauth2.client.resource.user-info-uri endpoint.
Figured out that setting security.oauth2.client.client-authentication-scheme to query will make the RestTemplate append the access_token to the subsequent requests for user information.

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