content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.apache.camel.component.http;
  
  import java.util.List;
  
  import org.apache.hc.client5.http.auth.AuthSchemeFactory;
  import org.apache.hc.client5.http.auth.BearerToken;
  import org.apache.hc.client5.http.auth.Credentials;
  import org.apache.hc.client5.http.auth.NTCredentials;
  import org.apache.hc.client5.http.auth.StandardAuthScheme;
  import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
  import org.apache.hc.client5.http.config.RequestConfig;
  import org.apache.hc.client5.http.impl.auth.BasicSchemeFactory;
  import org.apache.hc.client5.http.impl.auth.BearerSchemeFactory;
  import org.apache.hc.client5.http.impl.auth.DigestSchemeFactory;
  import org.apache.hc.client5.http.impl.auth.NTLMSchemeFactory;
  import org.apache.hc.client5.http.impl.classic.HttpClientBuilder;
  import org.apache.hc.core5.http.config.RegistryBuilder;
  
  public class DefaultAuthenticationHttpClientConfigurer implements HttpClientConfigurer {
  
      private final String username;
      private final char[] password;
      private final String domain;
      private final String host;
      private final String bearerToken;
      private final HttpCredentialsHelper credentialsHelper;
  
      public DefaultAuthenticationHttpClientConfigurer(String user, String pwd, String domain, String host, String bearerToken,
                                                       HttpCredentialsHelper credentialsHelper) {
          this.username = user;
          this.password = pwd == null ? new char[0] : pwd.toCharArray();
          this.domain = domain;
          this.host = host;
          this.bearerToken = bearerToken;
          this.credentialsHelper = credentialsHelper;
      }
  
      @Override
      public void configureHttpClient(HttpClientBuilder clientBuilder) {
          Credentials defaultcreds;
          if (domain != null) {
              defaultcreds = new NTCredentials(username, password, host, domain);
              // NTLM is not included by default so we need to rebuild the registry to include NTLM
              var autoSchemes = RegistryBuilder.<AuthSchemeFactory> create()
                      .register(StandardAuthScheme.BASIC, BasicSchemeFactory.INSTANCE)
                      .register(StandardAuthScheme.DIGEST, DigestSchemeFactory.INSTANCE)
                      .register(StandardAuthScheme.BEARER, BearerSchemeFactory.INSTANCE)
                      .register(StandardAuthScheme.NTLM, NTLMSchemeFactory.INSTANCE)
                      .build();
  
              // Set NTLM as preferred scheme
              RequestConfig requestConfig = RequestConfig.custom()
                      .setTargetPreferredAuthSchemes(List.of(StandardAuthScheme.NTLM))
                      .build();
  
              clientBuilder
                      .setDefaultAuthSchemeRegistry(autoSchemes)
                      .setDefaultRequestConfig(requestConfig);
  
              clientBuilder.setDefaultAuthSchemeRegistry(autoSchemes);
          } else if (bearerToken != null) {
              defaultcreds = new BearerToken(bearerToken);
          } else {
              defaultcreds = new UsernamePasswordCredentials(username, password);
          }
          clientBuilder.setDefaultCredentialsProvider(credentialsHelper
                  .getCredentialsProvider(host, null, defaultcreds));
      }
  
  }
  