org.jgroups.auth.sasl.SaslClientCallbackHandler Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.auth.sasl;

import java.io.IOException;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.sasl.RealmCallback;

/**
 * SaslClientCallbackHandler.
 *
 * @author Tristan Tarrant
 */
public class SaslClientCallbackHandler implements CallbackHandler {

    private final String name;
    private final char[] password;
    private final String realm;

    public SaslClientCallbackHandler(String name, char[] password) {
        int realmSep = name != null ? name.indexOf('@') : -1;
        this.realm = realmSep < 0 ? "" : name.substring(realmSep+1);
        this.name = realmSep < 0 ? name : name.substring(0, realmSep);
        this.password = password;
    }

    @Override
    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
        for (Callback callback : callbacks) {
            if (callback instanceof PasswordCallback) {
                ((PasswordCallback) callback).setPassword(password);
            } else if (callback instanceof RealmCallback) {
                ((RealmCallback) callback).setText(realm);
            } else if (callback instanceof NameCallback) {
                ((NameCallback) callback).setName(name);
            }
        }
    }

}