Spring Security with roles and permissions

user_25909 0
Viewed 122665

I'm trying to set up role-based Security with permissions. I'm trying to do this together with Spring-Security.

I don't want to set up ACL as it seems it's an overkill for my requirements.

I just want to have simple permissions and roles as described in this article. Unfortunately the article does not describe how to implement the given solution.

Has someone already tried this and can point me in the right direction? Maybe there is another blog entry that describes the implementation?

Thank you very much.

spring-security java
7 Answers

ACL was overkill for my requirements also.
I ended up creating a library similar to @Alexander's to inject a GrantedAuthority list for Role->Permissions based on the role membership of a user.

For example, using a DB to hold the relationships - 

@Autowired 
RolePermissionsRepository repository;

public void setup(){
  String roleName = "ROLE_ADMIN";
  List<String> permissions = new ArrayList<String>();
  permissions.add("CREATE");
  permissions.add("READ");
  permissions.add("UPDATE");
  permissions.add("DELETE");
  repository.save(new RolePermissions(roleName, permissions));
}

When an Authentication object is injected in the current security session, it will have the original roles/granted authorities.

This library provides 2 built-in integration points for Spring Security. When the integration point is reached, the PermissionProvider is called to get the effective permissions for each role the user is a member of.
The distinct list of permissions are added as GrantedAuthority items in the Authentication object.

You can also implement a custom PermissionProvider to store the relationships in config for example.

A more complete explanation here - https://stackoverflow.com/a/60251931/1308685

And the source code is here - https://github.com/savantly-net/spring-role-permissions

user_13086850

Just for sake of completeness (maybe someone else won't have to implement it from scratch):

We've implemented our own small library, as everyone else. It's supposed to make things easier, so that our developers don't have to reimplement it each time. It would be great if spring security would provide support of rbac out of the box, as this approach is much better than the default permission based one.

Have a look at Github (OSS, MIT license) to see if it suits your needs. It's basically only addressing the role <-> privileges mapping. The missing piece, you'll have to provide on your own is basically the user <-> roles mapping, e.g. by mapping groups (racf/ad groups) to roles (1:1) or by implementing an additional mapping. That one's different in each project, so it doesn't make sense to provide some implementation.

We've basically used this internally, so that we can start with rbac from the beginning. We can still replace it with some other implementation later on, if the application is growing, but it's important for us to get the setup right at the beginning.

If you don't use rbac, there's a good chance, that the permissions are scattered throughout the codebase and you'll have a hard time to extract/group those (into roles) later on. The generated graphs do also help to reason about it/restructure it later on.

user_38420410

After reading this post, from Baeldung. I found that the solution is pretty simple.

What I have done, is to add the role and permissions into the GrantedAuthority. I was able to access both methods hasRole() and hasAuthority().

user_76044900
Related