feat(config-api): comprehensive handling of oauth2 permission

[pujavs]

config-api endpoints are ouath2 protected. This requirement is to make the authorization comprehensive.

1. If a user has write permission then should be able to read data as well. That is no need for explicit read permission
2. Need super permission to execute endpoints

• https://jans.io/oauth/config/read-all should be able to able to execute read for all endpoints
• https://jans.io/oauth/config/write-all should be able to execute add/update/delete for all endpoints

3. Functionality wise group permission to enable excecution of all endpoints

• example all openid endpoints (client, scope), all admin-ui endpoints(role, mapping, permission, license)
  https://jans.io/oauth/config/oauth-write
  https://jans.io/oauth/config/oauth-read

Implementation

Metadata:
An endpoint can be annotated with endpoint specific scope, feature level scope(Group) or admin level scope using @ProtectedApi wherein;

• scope -> endpoint specific granular permissions
• groupScopes -> feature level permissions
• superScopes -> Admin level permissions

Logic:

• superScopes: If the access token has any of super scopes then no need to check group or granular scopes
• groupScopes: If the access token does not have any of the applicable super scopes then check if the access token has group level scopes. If any of the group level scope present then no need to check group or granular scopes.
• scope: If access token does not have any of the super or group level scopes then check if all the applicable endpoint specific granular scopes are present.

Example:
OpenID Client GET endpoint annotation
@ProtectedApi(scopes = { "https://jans.io/oauth/config/openid/clients.readonly" }, groupScopes = { "https://jans.io/oauth/config/openid/openid-write", "https://jans.io/oauth/config/openid-read" }, superScopes = { "https://jans.io/oauth/config/read-all")

• superScopes: If the access token has https://jans.io/oauth/config/read-all scopes then no need to check presence of any other scope.
• groupScopes: If the access token does not of any of applicable superScopes but has either of https://jans.io/oauth/config/openid/openid-write or https://jans.io/oauth/config/openid-read then no need to check presence of any other scope.
• scope: If access token does not have any of the super or group level scopes then check it should have the applicable https://jans.io/oauth/config/openid/clients.readonly scope to invoke the endpoint.

[pujavs]

Implemented via PR 3126