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Chapter 28.
Login Modules in a Java Client
This chapter describes how to configure an environment to use login modules with Java clients, and
provides an example of this.
28.1. Configuring an Environment to Use Login Modules with Java
Clients
The login modules for use by clients are defined in the
$JONAS_ROOT/conf/jaas.config
file. For
example:
jaasclient {
// Login Module to use for the example jaasclient.
//First, use a LoginModule for the authentication
// Use the resource memrlm_1
org.objectweb.jonas.security.auth.spi.JResourceLoginModule required
resourceName="memrlm_1"
;
// Use the login module to propagate security to the JOnAS server
// globalCtx is set to true in order to set the security context
// for all the threads of the client container instead of only
// on the current thread.
// Useful with multithread applications (like Swing Clients)
org.objectweb.jonas.security.auth.spi.ClientLoginModule
required
globalCtx="true"
;
};
This file is used when a Java client is launched with
jclient
, as a result of the following property
being set by
jclient
:
-Djava.security.auth.login.config==$JONAS_ROOT/conf/jaas.config
For more information about the JAAS authentication, refer to the JAAS authentication tutorial (see
http://java.sun.com/j2se/1.4.1/docs/guide/security/jaas/tutorials/GeneralAcnOnly.html).
28.2. Example of a Client
•
First, declare the CallbackHandler to use. It can be a simple command line prompt, a dialog, or
even a login/password to use.
Example of CallbackHandler that can be used within JOnAS:
CallbackHandler handler1 = new LoginCallbackHandler();
CallbackHandler handler2 = new DialogCallbackHandler();
CallbackHandler handler3 =
new NoInputCallbackHandler("jonas_user", "jonas_password");
•
Next, call the LoginContext method with the previously defined CallbackHandler and the entry to
use from the
JONAS_ROOT/conf/jaas.config
file.
This example uses the dialog callbackhandler.