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Migrate Common Object Request Broker Architecture programmatic login to Java Authentication and Authorization Service (CORBA and JAAS)

Use this topic as an example of how to perform programmatic login using the CORBA-based programmatic login APIs.

This document outlines the deprecated Common Object Request Broker Architecture (CORBA) programmatic login APIs and the alternatives provided by JAAS. WebSphere Application Server fully supports the Java Authentication and Authorization Service (JAAS) as programmatic login API. See Configure programmatic logins for JAAS and Develop programmatic logins with the JAAS for more details on JAAS support.

(ZOS) Common Object Request Broker Architecture (CORBA) API are not supported in the WAS for z/OS environment. If we have an application that we are porting from another WAS product to WAS for z/OS you must be aware that the security APIs that are deprecated in Version 6.0.x. To use these applications on WebSphere Application Server for z/OS v8.0, we must migrate to JAAS (JAAS).

The following list includes the deprecated CORBA programmatic login APIs.

The APIs provided in WebSphere Application Server are a combination of standard JAAS APIs and a product implementation of standard JAAS interfaces.

(ZOS) The supported APIs provided in WAS for z/OS are a combination of standard JAAS APIs and a product implementation of standard JAAS interfaces with some minor extension.

The following information is only a summary; refer to the JAAS documentation for your platform located at: http://www.ibm.com/developerworks/java/jdk/security/ .


Tasks

  1. (iSeries) Use the following as an example of how to perform programmatic login using the CORBA-based programmatic login APIs: The CORBA-based programmatic login APIs are replaced by JAAS login.

    The LoginHelper API used in the following example is deprecated in WAS v9.0 and will be removed in a future release. IBM recommends that we use the JAAS programmatic login APIs that are shown in the next step. 

    public class TestClient {
...
private void performLogin() {
// Get the ID and password of the user.
String userid = customGetUserid();
String password = customGetPassword();

// Create a new security context to hold authentication data.
LoginHelper loginHelper = new LoginHelper();
try {
// Provide the ID and password of the user for authentication.
org.omg.SecurityLevel2.Credentials credentials = 
loginHelper.login(userid, password);

// Use the new credentials for all future invocations.
loginHelper.setInvocationCredentials(credentials);
// Retrieve the name of the user from the credentials
// so we can tell the user that login succeeded.

String username = loginHelper.getUserName(credentials);
System.out.println("Security context set for user: "+username);
} catch (org.omg.SecurityLevel2.LoginFailed e) {
// Handle the LoginFailed exception.
}
}
...
}

  2. Use the following example to migrate the CORBA-based programmatic login APIs to the JAAS programmatic login APIs.

    The following example assumes that the application code is granted for the required Java 2 security permissions. See Configure programmatic logins for JAAS, Protecting system resources and APIs (Java 2 security) for developing applications, and the JAAS documentation located at http://www.ibm.com/developerworks/java/jdk/security/.

    public class TestClient {
...
private void performLogin() {
// Create a new JAAS LoginContext.
javax.security.auth.login.LoginContext lc = null;

try {
// Use GUI prompt to gather the BasicAuth data.
lc = new javax.security.auth.login.LoginContext("WSLogin",
new com.ibm.websphere.security.auth.callback.WSGUICallbackHandlerImpl());

// create a LoginContext and specify a CallbackHandler implementation
// CallbackHandler implementation determine how authentication data is collected
// in this case, the authentication date is collected by  login prompt
//   and pass to the authentication mechanism implemented by the LoginModule.
} catch (javax.security.auth.login.LoginException e) {
System.err.println("ERROR: failed to instantiate a LoginContext and the exception: " 
+ e.getMessage());
e.printStackTrace();

// may be javax.security.auth.AuthPermission "createLoginContext" is not granted
//   to the application, or the JAAS Login Configuration is not defined.
}

if (lc != null)
try {
lc.login();  // perform login
javax.security.auth.Subject s = lc.getSubject();
// Get the authenticated subject

// Invoke a J2EE resources using the authenticated subject
com.ibm.websphere.security.auth.WSSubject.doAs(s,
new java.security.PrivilegedAction() {
public Object run() {
try {
bankAccount.deposit(100.00);  // where bankAccount is an protected EJB
} catch (Exception e) {
System.out.println("ERROR: error while accessing EJB resource, exception: " 
+ e.getMessage());
e.printStackTrace();
}
return null;
}
}
);

// Retrieve the name of the principal from the Subject
// so we can tell the user that login succeeded,
// should only be one WSPrincipal.
java.util.Set ps = 
s.getPrincipals(com.ibm.websphere.security.auth.WSPrincipal.class);
java.util.Iterator it = ps.iterator();
while (it.hasNext()) {
com.ibm.websphere.security.auth.WSPrincipal p =
(com.ibm.websphere.security.auth.WSPrincipal) it.next();
System.out.println("Principal: " + p.getName());
}
} catch (javax.security.auth.login.LoginException e) {
System.err.println("ERROR: login failed with exception: " + e.getMessage());
e.printStackTrace();

// login failed, might want to provide relogin logic
}
}
...
}

  • Configure programmatic logins for JAAS
  • Developing programmatic logins with the JAAS
  • Protecting system resources and APIs (Java 2 security) for developing applications