Red Hat NETSCAPE ENTERPRISE SERVER 6.0 - NSAPI PROGRAMMER GUIDE Guida Utente Scaricare il pdf (Pagina 251)

Developing Java Applications

7-11

Converting LoginContext to an Instance

Convert the LoginContext to an instance. The code is shown below.

LoginContext loginContext = new LoginContext("com.fujitsu.interstage.sso",

subject, myHandler);

Use the following arguments for conversion:

• First argument

Configuration File.

• Second argument

Instance of a Subject object in which user authentication information set for successful

authentication is stored

• Third argument

Instance created as described in Converting CallbackHandler to an Instance.

Note

For JDK1.3, java.lang.SecurityException may be generated if a Java application converts the

LoginContext simultaneously from two or more threads, so use JDK1.4 or synchronize the LoginContext

conversion items. The following is an example:

LoginContext loginContext = null;

synchronized (LoginContext.class) {

loginContext = new LoginContext("com.fujitsu.interstage.sso",

subject, myHandler);

}

Calling LoginContext Login Method

Authentication processing is executed by calling the LoginContext login method. LoginException or its

subclass is thrown in the login method. Catch a thrown LoginException or its subclass. This is shown

in the following example:

try{

loginContext.login();

return true;

}

catch(FailedLoginException ex){

System.out.println("Authenticate failed");

continue;

}

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Red Hat NETSCAPE ENTERPRISE SERVER 6.0 - NSAPI PROGRAMMER GUIDE Guida Utente Pagina 251