Скачать или смотреть Implementing Role-Based Authorization in Spring Boot with Oauth2 using OneLogin

Learn how to implement `role-based authorization` in your Spring Boot application using Oauth2 and OneLogin to restrict access to specific APIs.
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This video is based on the question https://stackoverflow.com/q/64645351/ asked by the user 'Coder' ( https://stackoverflow.com/u/9730837/ ) and on the answer https://stackoverflow.com/a/64678541/ provided by the user 'Eleftheria Stein-Kousathana' ( https://stackoverflow.com/u/11430047/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Role-Based Authorization in Spring Boot with OneLogin

In modern web applications, security is a primary concern, especially when it comes to controlling access to sensitive endpoints. If you're developing a Spring Boot application and using Oauth2 with OneLogin as your authorization server, you might need to implement role-based authorization to restrict access to certain APIs based on user privileges. This article will guide you through the steps to achieve that.

The Challenge

You might find yourself in a scenario where your application manages users belonging to various groups. For instance, user A is in an "admin" group and user B is not. The challenge arises when trying to expose specific APIs that should only be accessible to users in the "admin" group.

The default authority for these users tends to revert to a generic role like ROLE_USER, which doesn't serve our purpose of precise access control.

Understanding the JWT Claims

When using Oauth2 with OneLogin, an important part of the user authentication process involves the JWT (JSON Web Token). This token contains multiple claims that provide information about the authenticated user. The relevant part for our implementation is how the authorities (roles) are derived from the JWT claims.

By default, Spring Security populates the user’s GrantedAuthorities based on the scope claim in the JWT. This is not sufficient for our needs since we want to utilize the groups claim instead.

Steps to Implement Role-Based Authorization

1. Custom JwtAuthenticationConverter

You can customize how the JWT is converted into an Authentication object by creating a custom JwtAuthenticationConverter. Below is how you can implement it:

[[See Video to Reveal this Text or Code Snippet]]

2. Updating your Security Configuration

Next, make sure that your Spring Security configuration utilizes the custom JwtAuthenticationConverter. You can do this in your security configuration class as shown:

[[See Video to Reveal this Text or Code Snippet]]

3. Securing Your Rest Endpoints

Now you can secure your REST controllers using the @ PreAuthorize annotation as follows:

[[See Video to Reveal this Text or Code Snippet]]

4. Configuration in application.yaml

Ensure you have the necessary configurations set in your application.yaml file:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By implementing a custom JwtAuthenticationConverter and configuring your Spring Security setup accordingly, you can achieve a robust role-based authorization mechanism that checks user group memberships effectively. This will ensure that only privileged users can access certain endpoints, improving the overall security of your application.

With these steps, you are now equipped to implement role-based authorization in your Spring Boot application using OneLogin. Happy coding!