Configuring spring-oauth2-client for non boot spring framework - spring

In spring boot, application.yml takes in the Spring oauth2 client config. How do I configure it for the non-boot application. By configuration I mean giving client ID, secret, scopes and redirect URI.

You could find an example here:
https://www.baeldung.com/spring-security-5-oauth2-login#non-boot
You need to:
Build your ClientRegistration.
A ClientRegistrationRepository.
Register your repository on WebSecurityConfigurerAdapter.

If you don't use SpringBoot : there is no application.yml and even if you can add the support of yml files. It won't handle your oauth2 client config.
Anyway you can use Spring security to implement your custom Authorization Service, a User service and implement a Token Store of your choice (JBDCTokenStore or JWTTokenStore for example). But It's a very wide question depending on your business logic.
You can find some well documented samples on :
https://github.com/spring-projects/spring-security-oauth/tree/master/spring-security-oauth2
Of course you can handle both XML and javaConfig even mixed Spring confugurations.
Create a #Configuration class with a #ComponentScan on the packages containing components or bean definitions.
#Configuration
#ComponentScan({ "com.firm.product.config.xml","com.firm.product.config.java" })
public class SpringConfig {
}
You can also set properties with #PropertySource() ans #Value annotations. It's very well documented.

Related

Upgrading from Java Config to Spring Boot

Upgrading an existing system to Spring Boot with Auto config. Currently the system is all Java config. I'm confused over whether to continue the use of #Profile. Is this annotation no longer needed? I searched extensively about upgrading and found only references to non-Spring Java migration and creating new projects.
Typical #Profile usage in our configuration classes looks something like:
#Bean
#Profile("is-standalone")
public Service unsecuredService(SomeApi someApi) {
return new ...
}
I inferred from the Spring Boot examples that using one of the #Conditional annotations is recommended like this:
#Bean
#ConditionalOnProperty("unsecured.enabled")
public Service unsecuredService(SomeApi someApi) {
return new ...
}
Then in a YAML file the is-standalone Profile enables or disables all the various properties for that Profile. Is this the proper way to upgrade? To repeat a question from above differently, can the #Profile usage be left as is? This is for a fairly large project, the upgrade is non-trivial, so I would like to do this only once!
Depends where your previous #Profile annotation is coming from. If you're using Spring's #Profile, the functionality is as follows:
Annotating a class with #Profile("dev") will load the class and register it in the Spring context only when the dev profile is active
Annotating a class with #Profile("!dev") will load the class and register it in the Spring context only when the dev profile is inactive
If this sounds like what you have already, no change is needed.

JerseyConfig and #Profile to hide a REST endpoint

I'm trying to hide a REST endpoint based on runtime configuration in Spring and Jersey. The most straightforward way is to throw the NotFoundException from the controller itself but maybe there's more kosher. The controller is registered in the constructor of the config class which extends org.glassfish.jersey.server.ResourceConfig.
I thought of using the #Profile annotation on the controller but I can still access the endpoint. When I hit that endpoint, I get the following error:
o.g.j.s.s.SpringComponentProvider - None or multiple beans found in Spring context
but then Jersey manages to access that controller, which I confirmed by attaching a debugger to the Spring process. So Jersey does not honor the #Profile setting.
On a separate note, I also have Swagger plugged into Jersey and when accessing the definition endpoint (.../swagger.json) I can see the endpoint provided by the #Profile-disabled controller.
Is there anything better I can do here is is throwing the NotFoundException the best option?
Note: Sorry, I thought I saw that you were using Spring Boot. The following answer is only relevant for Spring Boot.
#Profile is only good for Spring bean registration, but you are still registering the service with Jersey as a resource. What you can do is use a ResourceConfigCustomizer and add the #Profile to the customizer. This way it will only register the resource with Jersey ResourceConfig if the correct profile is active.
#Component
#Profile("..")
public class MyResourceConfigCustomizer implements ResourceConfigCustomizer {
#Override
public void customize(ResourceConfig config) {
config.register(MyResource.class);
}
}

Spring Boot: purpose of #EnableSocial anotation

in my Spring Boot app I am implementing the social login using Spring Social (1.1.4.RELEASE), I have following configuration class:
#Configuration
#EnableSocial
public class SocialConfig extends SocialConfigurerAdapter {
I see that #EnableSocial calls #Import(SocialConfiguration.class), but when I remove annotation #EnableSocial the social login works the same and SocialConfiguration is used anyway.
It's difficult to say without knowing more about your code, but even if you don't use #EnableSocial, Spring Boot will still assume you mean to use it if you provide sufficient social information (I'll use Facebook as an example here):
Your project depends on org.springframework.social:spring-social-facebook directly or transitively through for example org.springframework.boot:spring-boot-starter-social-facebook.
You specify information that the app can use to connect to the social network site. To figure out exactly what you need for Spring Boot to automatically configure it, you should check out the AutoConfiguration class for the social site in question, for example FacebookAutoConfiguration.
By the way, here's an example on how to get it working without #EnableSocial. Does it look similar to your setup? https://spring.io/guides/gs/accessing-facebook/

Purpose of using #Configuration annotation

I have created a spring mvc based application but I didn't use this #Configuration annotation. What is the purpose of using #Configuration annotation? By using this, what are we communicating to springMVC container?
Assuming your application is using xml configuration rather than AnnotationConfig so it is not loaded to ApplicationContext at all.
#Configuration is used when ApplicationContext has been initialized and bean registration.
#Configuration annotation is a core Spring annotation, and not Spring MVC. It is a core entry point to configuring Spring-based application using Java config instead of XML config.
Please, use Spring Documentation more often because it is a place where you will find answers to most of your questions. Like this one:
Indicates that a class declares one or more Bean #Bean methods and may
be processed by the Spring container to generate bean definitions and
service requests for those beans at runtime

Spring Security 4 & CDI

I want to use SpringSecurity4 in a CDI/EJB environment.
Is this possible? Can SpringSecurity can be used without using Spring?
What I want to do, is to use SpringSecurity with my EJB and CDI components.
Spring Security is basically a filter machine, filtering all the incoming requests. However, plenty of it's functionality is Spring-core dependent. It is possible to utilize Spring in a CDI application, but Spring's core is heavyweight and it's functionality is funny compared to CDI. That would be a downgrade and there would be no point in using CDI.
What you can do is to have a look at some Security projects for JEE world.
Apache DeltaSpike and it's Security module.
Keycloak - The absolute solution. Keycloak goes far, far beyond Spring security's functionality. It is an evolution of old PicketLink libraries developed by JBoss, but those are discontinued and merged into Keycloak instead. An example how simple usage of Keycloak is can be found here.
It is also not that hard to write own security interceptor using #WebFilter and #Inject :), there are several projects on GitHub:
https://github.com/rmpestano/security-interceptor
https://github.com/clairton/security
https://github.com/Rudin-Informatik/cdi-security
https://github.com/rafaelodon/my-security-context
I have no experience with these projects. However, I am always amazed how easily can Spring Security be replaced :)
I am using Spring Security with CDI but I can say it is not very healthy since Spring Security is based on spring and spring is messing with the CDI beans.
Here is what happened to me. I customized the AuthenticationProvider of spring security in order to authenticate users through my authentication server. When implementing this mechanism I used my predefined CDI beans by injecting them using (#Inject) annotation. At this point spring somehow intercepts the injection and creates its own bean, which means you cannot use any of the values you set to the CDI bean previously.
In order to solve this, I did some trick like this:
#Inject
private LoginController loginController;
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
//Here, the injected bean is empty, I am requesting my old bean from CDI and assign it back.
LoginController bm = (LoginController) CDI.current().select(LoginController.class).get();
loginController = bm;
I don't know if this is the answer you are looking for but i hope this helps...

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