Tuesday, October 28, 2014

Creating Roles and Assigning Permissions in WSO2 IS

In this article I will try to explain the ways to create and assign roles in WSO2 Identity Server. I'll walk you through on creating and assigning roles in the Management console UI and then outline the ways to do the same using an API and using a Java client programmatically.

Let's start the WSO2 Identity Server (IS) first. To download and run the WSO2 IS, look here.

Once started login to management console. First let's look at how we can create a role named 'TestRole' and assign some permissions in the permission tree to it. This involves only a very few steps. Navigate to Configure -> Users and Roles -> Roles ->  Add New Role. Enter the role name as 'TestRole' and click next. The permission tree would be shown and you need to select the the relevant permission in the tree for this role. If you need to assign certain existing users to this role, click next and select those users. Otherwise click finish. That's it. You have successfully create a a new role named 'TestRole' and assigned permission for that. You can see the existing roles by navigating to Home -> Configure -> Users and Roles -> Roles. At this place you can view the permission, delete the role, assign user and also rename the role.

Next we shall see how to create roles and assign any permission in the permission tree to those roles using a programmatic way, without using the UI. You can do that by calling an admin service as an API or using a Java client. I'll outline both the methods here.

There is a web service API called RemoteUserStoreManagerService that can be used to manage users and roles. This is an Admin Service in the WSO2 carbon platform. Admin services in the WSO2 products are hidden by default. To see the wsdl of this web service you need to unhide the Admin service WSDLs. To do that, first, open up CARBON_HOME/repository/conf/carbon.xml and look for the following line.
Make it to 'false' and restart the server.

After the server is successfully started, you can access the wsdl of the RemoteUserStoreManagerService by navigating to https://localhost:9443/services/RemoteUserStoreManagerService?wsdl (Replace 'localhost' part as applicable).

Following are the two methods I mentioned

1. You can create a SOAP UI project with this wsdl. You can use the addRole method to add the role. A sample SOAP call is given below to add a role named 'ValidRole' and assign permission under '/permission/admin/login/EmailLogin' where 'EmailLogin' being a new permission I created under '/permission/admin/login/'
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ser="http://service.ws.um.carbon.wso2.org" xmlns:xsd="http://dao.service.ws.um.carbon.wso2.org/xsd">
2. You can write a Java client instead and invoke the methods in the RemoteUserStoreManagerService. A sample Java program is shown below to achieve this. The very self explanatory. Note: you need to add the plugins directory of a IS product to the classpath of the program to build and run this.
import org.apache.axis2.client.Options;
import org.apache.axis2.client.ServiceClient;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.context.ConfigurationContextFactory;
import org.apache.axis2.transport.http.HTTPConstants;
import org.apache.axis2.transport.http.HttpTransportProperties;
import org.wso2.carbon.CarbonConstants;
import org.wso2.carbon.um.ws.api.stub.PermissionDTO;
import org.wso2.carbon.um.ws.api.stub.RemoteUserStoreManagerServiceStub;

public class ISClient {

    private static final String CARBON_HOME = "/home/shazni/Downloads/WSO2/wso2is-5.0.0";
    private static final String SEVER_URL = "https://localhost:9443/services/";
    private static final String USER_NAME = "admin";
    private static final String PASSWORD = "admin";
    private static final String ROLE_NAME = "permissionRole";

    public static void main(String args[]){

        String trustStore = CARBON_HOME + "/repository/resources/security/wso2carbon.jks";
        System.setProperty("javax.net.ssl.trustStore",  trustStore );
        System.setProperty("javax.net.ssl.trustStorePassword", "wso2carbon");

        ConfigurationContext configContext;

        try {
            configContext = ConfigurationContextFactory.createConfigurationContextFromFileSystem( null, null);
            String serviceEndPoint = SEVER_URL + "RemoteUserStoreManagerService";

            RemoteUserStoreManagerServiceStub adminStub = new RemoteUserStoreManagerServiceStub(configContext, serviceEndPoint);
            ServiceClient client = adminStub._getServiceClient();
            Options option = client.getOptions();

            option.setProperty(HTTPConstants.COOKIE_STRING, null);

            HttpTransportProperties.Authenticator auth = new HttpTransportProperties.Authenticator();
            option.setProperty(org.apache.axis2.transport.http.HTTPConstants.AUTHENTICATE, auth);

            boolean  authenticate = false;

                authenticate = adminStub.authenticate(USER_NAME, PASSWORD);
            } catch (Exception e){

                System.out.println("User is authenticated successfully");
            } else {
                System.err.println("User is authentication failed");

                PermissionDTO permissionDTO = new PermissionDTO();

                PermissionDTO[] permissionDTOs = new PermissionDTO[1];
                permissionDTOs[0] = permissionDTO ;

                adminStub.addRole(ROLE_NAME, null, permissionDTOs);
                System.out.println("Role is created successfully");
            } catch (Exception e){
                System.err.println("Role creation is failed");
        } catch (Exception e) {
Well that's it. Hope this article has been informative to you.

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