NoInputCallbackHandler.java

package org.objectweb.jonas.security.auth.callback;

import java.io.IOException;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.Callback;
import java.security.cert.Certificate;

public class NoInputCallbackHandler implements CallbackHandler {

    private String username = null;

    private String password = null;

    private Certificate cert = null;

    public NoInputCallbackHandler() throws Exception {
        throw new Exception(
                "This class could only be used with the constructor NoInputCallbackHandler(String username, String password)");
    }

    public NoInputCallbackHandler(String username, String password) {
        this.username = username;
        this.password = password;
    }

    public NoInputCallbackHandler(String username, String password, Certificate cert) {
        this(username, password);
        this.cert = cert;
    }

    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {

        for (int i = 0; i < callbacks.length; i++) {
            if (callbacks[i] instanceof NameCallback) {
                // set the username to the username given in the constructor
                NameCallback nc = (NameCallback) callbacks[i];
                nc.setName(username);
            } else if (callbacks[i] instanceof PasswordCallback) {
                // set the password to the password given in the constructor
                PasswordCallback pc = (PasswordCallback) callbacks[i];
                pc.setPassword(password.toCharArray());
            } else if (callbacks[i] instanceof CertificateCallback) {
                CertificateCallback cc = (CertificateCallback) callbacks[i];
                cc.setUserCertificate(cert);
            } else {
                throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback");
            }
        }
    }
}

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