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ejb-security-context-propagation: Demonstrate security context propagation in EJB to remote EJB calls

The ejb-security-context-propagation quickstart demonstrates how the security context can be propagated to a remote EJB using a remote outbound connection configuration

What is it?

The ejb-security-context-propagation quickstart demonstrates how the security context of an EJB can be propagated to a remote EJB in {productNameFull}.

The quickstart makes use of two EJBs, SecuredEJB and IntermediateEJB, to verify that the security context propagation is correct, and a RemoteClient standalone client.

SecuredEJB

The SecuredEJB has four methods.

String getSecurityInformation();
String guestMethod();
String userMethod();
String adminMethod();

The getSecurityInformation() method can be called by all users that are created in this quickstart. The purpose of this method is to return a String containing the name of the Principal that called the EJB, along with the user’s authorized role information, for example:

[Principal=[quickstartUser], In role [guest]=true, In role [user]=true, In role [admin]=false]

The guestMethod(), userMethod(), and adminMethod()` methods are annotated to require that the calling user is authorized for roles guest, user and admin respectively.

IntermediateEJB

The IntermediateEJB contains a single method. Its purpose is to make use of a remote connection and invoke each of the methods on the SecuredEJB. A summary is then returned with the outcome of the calls.

RemoteClient

Finally there is the RemoteClient stand-alone client. The client makes calls using the identity of the established connection.

In the real world, remote calls between servers in the servers-to-server scenario would truly be remote and separate. For the purpose of this quickstart, we make use of a loopback connection to the same server so we do not need two servers just to run the test.

Prerequisites

This quickstart uses the default standalone configuration plus the modifications described here.

It is recommended that you test this approach in a separate and clean environment before you attempt to port the changes in your own environment.

Configure the Server

You configure the security domain by running JBoss CLI commands. For your convenience, this quickstart batches the commands into a configure-elytron.cli script provided in the root directory of this quickstart.

  1. Before you begin, make sure you do the following:

  2. Review the configure-elytron.cli file in the root of this quickstart directory. This script adds the configuration that enables Elytron security for the quickstart deployment. Comments in the script describe the purpose of each block of commands.

  3. Open a new terminal, navigate to the root directory of this quickstart, and run the following command, replacing {jbossHomeName} with the path to your server:

    $ {jbossHomeName}/bin/jboss-cli.sh --connect --file=configure-elytron.cli
    Note
    		 For Windows, use the {jbossHomeName}\bin\jboss-cli.bat script.

  4. Because this example quickstart demonstrates security, system exceptions are thrown when secured EJB access is attempted by an invalid user. If you want to review the security exceptions in the server log, you can skip this step. If you want to suppress these exceptions in the server log, run the following command, replacing {jbossHomeName} with the path to your server:

    $ {jbossHomeName}/bin/jboss-cli.sh --connect --file=configure-system-exception.cli
    Note
    		 For Windows,use the {jbossHomeName}\bin\jboss-cli.bat script.

    You should see the following result when you run the script:

    The batch executed successfully

  5. Stop the {productName} server.

Review the Modified Server Configuration

After stopping the server, open the {jbossHomeName}/standalone/configuration/standalone.xml file and review the changes.

  1. The following application-security-domain was added to the ejb3 subsystem:

    <application-security-domains>
    <application-security-domain name="quickstart-domain" security-domain="ApplicationDomain"/>
</application-security-domains>

    The application-security-domain enables Elytron security for the quickstart EJBs. It maps the quickstart-domain security domain that is set in the EJBs using the Java annotation @SecurityDomain("quickstart-domain") to the Elytron ApplicationDomain that is responsible for authenticating and authorizing access to the EJBs.

  2. The following ejb-outbound-configuration authentication configuration and ejb-outbound-context authentication context were added to the elytron subsystem:

    <authentication-configuration name="ejb-outbound-configuration" security-domain="ApplicationDomain" sasl-mechanism-selector="PLAIN"/>
<authentication-context name="ejb-outbound-context">
    <match-rule authentication-configuration="ejb-outbound-configuration"/>
</authentication-context>

    The ejb-outbound-configuration contains the authentication configuration that will be used when invoking a method on a remote EJB, for example when IntermediateEJB calls the methods on the SecuredEJB. The above configuration specifies that the identity that is currently authenticated to the ApplicationDomain will be used to establish the connection to the remote EJB. The sasl-mechanism-selector defines the SASL mechanisms that should be tried. In this quickstart the PLAIN mechanism has been chosen because other challenge-response mechanisms such as DIGEST-MD5 can’t provide the original credential to establish the connection to the remote EJB.

    The ejb-outbound-context is the authentication context that is used by the remote outbound connection and it automatically selects the ejb-outbound-configuration.

  3. The following ejb-outbound outbound-socket-binding connection was created within the standard-sockets socket-binding-group:

    <outbound-socket-binding name="ejb-outbound">
    <remote-destination host="localhost" port="8080"/>
</outbound-socket-binding>

    For the purpose of the quickstart we just need an outbound connection that loops back to the same server. This will be sufficient to demonstrate the server-to-server capabilities.

  4. The following ejb-outbound-connection remote-outbound-connection was added to the outbound-connections within the remoting subsytem:

    <outbound-connections>
    <remote-outbound-connection name="ejb-outbound-connection" outbound-socket-binding-ref="ejb-outbound" authentication-context="ejb-outbound-context"/>
</outbound-connections>

  5. The http-connector in the remoting subsystem was updated to use the application-sasl-authentication authentication factory. It allows for the identity that was established in the connection authentication to be propagated to the components.

    <http-connector name="http-remoting-connector" connector-ref="default" security-realm="ApplicationRealm" sasl-authentication-factory="application-sasl-authentication"/>

  6. Finally, the application-sasl-authentication factory was updated in the elytron subsystem to include the PLAIN mechanism:

    <sasl-authentication-factory name="application-sasl-authentication" sasl-server-factory="configured" security-domain="ApplicationDomain">
    <mechanism-configuration>
        <mechanism mechanism-name="PLAIN"/>
        <mechanism mechanism-name="JBOSS-LOCAL-USER" realm-mapper="local"/>
        <mechanism mechanism-name="DIGEST-MD5">
            <mechanism-realm realm-name="ApplicationRealm"/>
        </mechanism>
    </mechanism-configuration>
</sasl-authentication-factory>

  7. If you ran the script to suppress system exceptions, you should see the following configuration in the ejb3 subsystem.

    <log-system-exceptions value="false"/>

Run the Client

Before you run the client, make sure you have already successfully deployed the EJBs to the server in the previous step and that your terminal is still in the same folder.

Type this command to execute the client:

$ mvn exec:exec

Investigate the Console Output

When you run the mvn exec:exec command, you see the following output. Note there may be other log messages interspersed between these.

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * IntermediateEJB - Begin Testing with principal quickstartUser * *

Remote Security Information: [Principal=[quickstartUser], In role [guest]=true, In role [user]=true, In role [admin]=false]
Can invoke guestMethod? true
Can invoke userMethod? true
Can invoke adminMethod? false

* * IntermediateEJB - End Testing * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * IntermediateEJB - Begin Testing with principal quickstartAdmin * *

Remote Security Information: [Principal=[quickstartAdmin], In role [guest]=true, In role [user]=true, In role [admin]=true]
Can invoke guestMethod? true
Can invoke userMethod? true
Can invoke adminMethod? true

* * IntermediateEJB - End Testing * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

As can be seen from the output the identities authenticated to the intermediate EJB were propagated all the way to the remote secured EJB and their roles have been correctly evaluated.

Investigate the Server Console Output

If you did not run the script to suppress system exceptions, you should see the following exceptions in the {productName} server console or log. The exceptions are logged for each of the tests where a request is rejected because the user is not authorized.

ERROR [org.jboss.as.ejb3.invocation] (default task-57) WFLYEJB0034: EJB Invocation failed on component SecuredEJB for method public abstract java.lang.String org.jboss.as.quickstarts.ejb_security_context_propagation.SecuredEJBRemote.adminMethod(): javax.ejb.EJBAccessException: WFLYEJB0364: Invocation on method: public abstract java.lang.String org.jboss.as.quickstarts.ejb_security_context_propagation.SecuredEJBRemote.adminMethod() of bean: SecuredEJB is not allowed
    at org.jboss.as.ejb3.security.RolesAllowedInterceptor.processInvocation(RolesAllowedInterceptor.java:67)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.as.ejb3.security.SecurityDomainInterceptor.processInvocation(SecurityDomainInterceptor.java:44)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.as.ejb3.deployment.processors.StartupAwaitInterceptor.processInvocation(StartupAwaitInterceptor.java:22)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory$1.processInvocation(ShutDownInterceptorFactory.java:64)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.as.ejb3.deployment.processors.EjbSuspendInterceptor.processInvocation(EjbSuspendInterceptor.java:57)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:67)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:54)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.invocation.ContextClassLoaderInterceptor.processInvocation(ContextClassLoaderInterceptor.java:60)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:438)
    at org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:609)
    at org.jboss.invocation.AccessCheckingInterceptor.processInvocation(AccessCheckingInterceptor.java:57)
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)
    at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:53)
    at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:198)
    at org.wildfly.security.auth.server.SecurityIdentity.runAsFunctionEx(SecurityIdentity.java:380)
    at org.jboss.as.ejb3.remote.AssociationImpl.invokeWithIdentity(AssociationImpl.java:492)
    at org.jboss.as.ejb3.remote.AssociationImpl.invokeMethod(AssociationImpl.java:487)
    at org.jboss.as.ejb3.remote.AssociationImpl.lambda$receiveInvocationRequest$0(AssociationImpl.java:188)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

This script reverts the changes made to the ejb3, elytron and remoting subsystems. You should see the following result when you run the script.

The batch executed successfully
process-state: reload-required
Note

If you ran the script to suppress system exceptions, you need to restore the logging of system exceptions. Run the above command, passing restore-system-exception.cli instead of restore-configuration.cli for the file name. You should see the following result when you run the script.

The batch executed successfully

This quickstart requires additional configuration and deploys and runs differently in JBoss Developer Studio than the other quickstarts.

  1. Make sure you Add the Application Users as described above.

  2. Follow the steps above to Configure the Server. Stop the server at the end of that step.

  3. To deploy the application to the {productName} server, right-click on the {artifactId} project and choose Run As → Run on Server.

  4. To access the application, right-click on the {artifactId} project and choose Run As → Java Application.

  5. Choose RemoteClient - org.jboss.as.quickstarts.ejb_security_context_propagation and click OK.

  6. Review the output in the console window.

  7. To undeploy the project, right-click on the {artifactId} project and choose Run As → Maven build. Enter wildfly:undeploy for the Goals and click Run.

  8. Make sure you restore the server configuration when you have completed testing this quickstart.