kamaci kamaci - 3 months ago 9
Java Question

Jax RS Authorization

I have an existing code at a class which is extended from

javax.ws.rs.core.Application


...
Context childContext = component.getContext().createChildContext();
JaxRsApplication application = new JaxRsApplication(childContext);
application.add(this);
application.setStatusService(new ErrorStatusService());
childContext.getAttributes().put("My Server", this);
...

ChallengeAuthenticator challengeGuard = new ChallengeAuthenticator(null, ChallengeScheme.HTTP_BASIC, "REST API Realm");
//Create in-memory users with roles
MemoryRealm realm = new MemoryRealm();
User user = new User("user", "user");
realm.getUsers().add(user);
realm.map(user, Role.get(null, "user"));
User owner = new User("admin", "admin");
realm.getUsers().add(owner);
realm.map(owner, Role.get(null, "admin"));
//Attach verifier to check authentication and enroler to determine roles
challengeGuard.setVerifier(realm.getVerifier());
challengeGuard.setEnroler(realm.getEnroler());
challengeGuard.setNext(application);
// Attach the application with HTTP basic authentication security
component.getDefaultHost().attach(challengeGuard);


I don't have a web.xml at my code. I would like to add authorization to my code. This: https://restlet.com/technical-resources/restlet-framework/guide/2.3/core/security/authorization does not apply to me since I don't have restlet resources.

How can I implement jax rs authorization into my code?

EDIT 1: Existing code uses restlet JAX-RS extension: https://restlet.com/technical-resources/restlet-framework/guide/2.2/extensions/jaxrs

I've tried that at my jax-rs resource class:

@GET
@Path("/")
public String getStatus() {
if (!securityContext.isUserInRole("admin")) {
throw new WebApplicationException(Response.Status.FORBIDDEN);
}
...
}


However, it throws 403 even I log in with
admin
user.

EDIT 2:

When I check here: https://restlet.com/technical-resources/restlet-framework/guide/2.2/extensions/jaxrs There is a piece of code:

this.setRoleChecker(...); // if needed


This may solve my issue but I don't know how to set a role checker.

PS: I use jersey 1.9 and restlet 2.2.3.

Answer

I could make it work like that:

Application class:

...
application.setRoles(getRoles(application));
... 
public static List<Role> getRoles(JaxRsApplication application) {
  List<Role> roles = new ArrayList<>();
  for (AuthorizationRoleEnum authorizationRole : AuthorizationRoleEnum.values()) {
      roles.add(new Role(application, authorizationRole.toString()));
  }
  return roles;
}
...

Authorization enum:

public enum AuthorizationRoleEnum {
  USER("user"),
  ADMIN("admin");

  private final String value;

  AuthorizationRoleEnum(String value) {
    this.value = value;
  }

  @Override
  public String toString() {
    return value;
  }

}

At my resource classes:

...
@Context
SecurityContext securityContext;
...
allowOnlyAdmin(securityContext);
...
public void allowOnlyAdmin(SecurityContext securityContext) {
  if (securityContext.getAuthenticationScheme() != null
    && !securityContext.isUserInRole(AuthorizationRoleEnum.ADMIN.toString())) {
    throw new WebApplicationException(Response.status(Response.Status.FORBIDDEN)
      .entity("User does not have required " + AuthorizationRoleEnum.ADMIN + " role!").build());
  }
}
...
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