SAP BTP Security Automation Using Authorization REST API and SAP Cloud SDK to ma...

Recently I have got chance to work on BTP cloud security below use-case is in a cloud application

1) Display BTP Role Collection in UI Picker :Show all role collections, roles ,which exist within the current sub  account created for specific XSUAA APP Programmatically
2) Validate whether role collection exist at BTP sub account
3) Show Users :Get users to whom the role collections are assigned

To accomplish this i would like to recommend to refer

Authorization  REST API

SAP Cloud SDK

Which make the consumption of Authorization  REST API  easy and convenient on SAP Business Technology Platform.

• You’ll benefit from less code boilerplate and better developer experience.
• You will get typesafe client auto generated classes which avoids lot of code i.e you no need to write  DTO, Request,Response ,JSON Models
• It will hide complexity in connecting to any Remote Service i.e take care of Authentication,CSRF , ETag tokens handling ,automated management of HTTP Headers and much more

You can further extend  SAP BTP Security Automation Scenarios Using  Authorization  REST API  SAP Cloud SDK: to manage Application Security artifacts & to administrate the Authorization and Trust Management service (XSUAA) of SAP BTP, Cloud Foundry environment.
You can manage service instances of the Authorization and Trust Management service. You can also manage roles, role templates, and role collections of your subaccount.

Lets start how to use BTP Authorization  REST API

Screenshot :   Few Role Collections available at my BTP Trail Sub Account created for Demo Cloud Application

To get these Role Collections of BTP  XSUAA ,for this kind use case’s

We need to create another XSUAA instances to get security artifacts .

This one only needs to be created with service plan “apiaccess” as shown below

Then Create Service Key of other XSUAA Instance of type “apiaccess” & Use Client ID,Client Secret,Access Token URL

For Blog Simplicity ,just to test i will try to execute API’s from REST Client/Postman as shown below

Here you can also filter by XSUAA APP

Get User References for given Role Collection

May be Application Admin needs to view which are the users that have a specific application role/all scopes of user , role collections , without navigating to BTP sub-account (sub-accoubt view rights needed to view sub-account details)

If you have requirement to get users to whom the role collections are assigned this is also possible

Now If you would like to proceed Programmatically then use

@sap-cloud-sdk/openapi-generator

as explained in https://api.sap.com/api/AuthorizationAPI/cloud-sdk/JavaScript

Example :

How to use the  BTP Auth “RoleCollectionsApi” to Returns all role collections, which exist within the current  BTP subaccount

or you can also further filter response by using other api’s like by specified by the application ID.
or returns information about a role collection identified by the name of the role collection

const authapi = require("../src/generated/AuthorizationAPI");
const authapp = authapi.RolesApi.getRolesByAppId("xsuaa-app-id");
const request = authapi.RoleCollectionsApi;
const roleCollections = request.getRoleCollections();

...

roleCollections.execute({ destinationName: 'int_subaccountname_xsuaaname' });

....

For Classic approach you need to write lot of code  i.e Making BTP Platform HTTP requests with Axios , NodejS

const axios = require('axios')
const xssec = require('@sap/xssec')

https://blogs.sap.com/2022/10/12/sap-btp-security-how-to-use-rest-api-of-xsuaa-to-programmatically-manage-security-artifacts/

How to Get User & Permissions assigned on BTP Sub Account

If you navigate to BTP Sub-Account –>  Choose Users –> Under “Security” as shown below, you can view users & associated roles assigned to user in BTP Cockpit

Below is screenshot from my BTP trail account

Rest API to Get Users & assigned Roles/Permissions on BTP Sub-Account

if you would like Get this User Details Programatically then you can use below Rest API similar to how i explained above “How to Use BTP XSUAA Authorization  REST API”

May be Application Admin needs to view  users that have a specific application role/all scopes, role collections assigned

To Get All Users from BTP Sub-Account

https://api.authentication.region.hana.ondemand.com/Users

You can also filter response by sending query parameters like

https://api.authentication.region.hana.ondemand.com/[email protected]

Manage User Assignment to BTP XSUAA Role Collection Programmatically

To Add users, groups Programmatically

We have BTP standard [SCIM ] API’s(https://api.sap.com/api/IdDS_SCIM/tryout)’s to Manage users, groups and custom schemas in the SAP Cloud at Custom IAS Tenant (own Identity tenant ) Services

https://api.sap.com/api/IdDS_SCIM/tryout

https://help.sap.com/docs/IDENTITY_AUTHENTICATION/6d6d63354d1242d185ab4830fc04feb1/ddd067c899f94e2f9006cc4dd417be80.html

Thank you for reading this blog post.Hope this will be beneficial for you !

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