/**
 * Copyright 2015-2016 Red Hat, Inc, and individual contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.wildfly.swarm.management;

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;

/**
 * @author Bob McWhirter
 */
public class AuthCallbackHandler implements CallbackHandler {

    private final String userName;

    private final String password;

    public AuthCallbackHandler(String userName, String password) {
        this.userName = userName;
        this.password = password;

    }

    @Override
    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
        for (Callback current : callbacks) {
            if (current instanceof NameCallback) {
                NameCallback ncb = (NameCallback) current;
                ncb.setName(this.userName);
            } else if (current instanceof PasswordCallback) {
                PasswordCallback pcb = (PasswordCallback) current;
                pcb.setPassword(this.password.toCharArray());
            } else if (current instanceof RealmCallback) {
                RealmCallback rcb = (RealmCallback) current;
                rcb.setText(rcb.getDefaultText());
            } else {
                throw new UnsupportedCallbackException(current);
            }
        }

    }
}