package org.metricshub.winrm.service.client.auth;
   
   /*-
    * ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
    * WinRM Java Client
    * ჻჻჻჻჻჻
    * Copyright 2023 - 2024 Metricshub
    * ჻჻჻჻჻჻
    * 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.
   * ╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱
   */
  
  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;
  
  public class UsernamePasswordCallbackHandler implements CallbackHandler {
  
  	private final String username;
  	private final char[] password;
  
  	/**
  	 * UsernamePasswordCallbackHandler constructor
  	 *
  	 * @param username name of the user to authenticate
  	 * @param password The password
  	 */
  	public UsernamePasswordCallbackHandler(final String username, final char[] password) {
  		this.username = username;
  		this.password = password;
  	}
  
  	@Override
  	public void handle(final Callback[] callbacks) throws IOException, UnsupportedCallbackException {
  		if (callbacks == null) {
  			return;
  		}
  
  		for (final Callback callback : callbacks) {
  			if (callback instanceof NameCallback) {
  				final NameCallback nameCallback = (NameCallback) callback;
  				nameCallback.setName(username);
  			} else if (callback instanceof PasswordCallback) {
  				final PasswordCallback passwordCallback = (PasswordCallback) callback;
  				passwordCallback.setPassword(password);
  			} else {
  				throw new UnsupportedCallbackException(callback, "Unknown Callback");
  			}
  		}
  	}
  }