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.scp;
  
  import java.nio.file.Paths;
  import java.util.List;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.mock.MockEndpoint;
  import org.apache.sshd.common.NamedFactory;
  import org.apache.sshd.common.cipher.BuiltinCiphers;
  import org.apache.sshd.common.cipher.Cipher;
  import org.apache.sshd.common.kex.BuiltinDHFactories;
  import org.apache.sshd.common.kex.KeyExchangeFactory;
  import org.apache.sshd.common.keyprovider.FileKeyPairProvider;
  import org.apache.sshd.common.signature.BuiltinSignatures;
  import org.apache.sshd.common.signature.Signature;
  import org.apache.sshd.server.ServerBuilder;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.MethodSource;
  
  import static org.junit.jupiter.api.Assumptions.assumeTrue;
  
  public class ScpAlgorithmsTest extends ScpServerTestSupport {
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              @Override
              public void configure() {
                  from("file:" + getScpPath() + "?recursive=true&delete=true")
                          .convertBodyTo(String.class)
                          .to("mock:result");
              }
          };
      }
  
      @ParameterizedTest
      @MethodSource("configProvider")
      public void testScpSimpleProduceWithDifferentAlgorithms(Config config) throws Exception {
          LOG.info("Starting SSH server with {} config", config);
          configureServer(config);
  
          assumeTrue(this.isSetupComplete());
  
          getMockEndpoint("mock:result").expectedBodiesReceived("Hello World");
  
          String uri = getScpUri() + "?username=admin&password=admin&knownHostsFile=" + getKnownHostsFile();
          template.sendBodyAndHeader(uri, "Hello World", Exchange.FILE_NAME, "hello.txt");
  
          MockEndpoint.assertIsSatisfied(context);
      }
  
      private void configureServer(Config config) {
          this.serverConfigurer = sshd -> {
              sshd.setKeyPairProvider(new FileKeyPairProvider(Paths.get(config.privateKeyLocation)));
              List<NamedFactory<Signature>> signatureFactories = sshd.getSignatureFactories();
              signatureFactories.clear();
              signatureFactories.add(config.signatureAlgorithm);
              sshd.setSignatureFactories(signatureFactories);
              List<KeyExchangeFactory> keyExchangeFactories = sshd.getKeyExchangeFactories();
              keyExchangeFactories.clear();
              keyExchangeFactories
                      .add(ServerBuilder.DH2KEX.apply(BuiltinDHFactories.resolveFactory(config.kexAlgorithm.getName())));
              sshd.setKeyExchangeFactories(keyExchangeFactories);
              List<NamedFactory<Cipher>> cipherFactories = sshd.getCipherFactories();
              cipherFactories.clear();
              cipherFactories.add(config.cipher);
              sshd.setCipherFactories(cipherFactories);
          };
      }
  
      private static Config[] configProvider() {
          return new Config[] {
                  //                new Config("hostkey-dsa.pem", BuiltinSignatures.dsa, BuiltinDHFactories.dhg14_256, BuiltinCiphers.aes128ctr),
                  new Config(
                          "hostkey-rsa.pem", BuiltinSignatures.rsaSHA256, BuiltinDHFactories.dhg16_512,
                          BuiltinCiphers.aes192ctr),
                  new Config(
                          "hostkey-rsa.pem", BuiltinSignatures.rsaSHA512, BuiltinDHFactories.dhg16_512,
                          BuiltinCiphers.aes192ctr),
                  new Config(
                          "hostkey-ecdsa256.pem", BuiltinSignatures.nistp256, BuiltinDHFactories.ecdhp256,
                          BuiltinCiphers.aes128ctr),
                  new Config(
                          "hostkey-ecdsa384.pem", BuiltinSignatures.nistp384, BuiltinDHFactories.ecdhp384,
                          BuiltinCiphers.aes192ctr),
                  new Config(
                          "hostkey-ecdsa521.pem", BuiltinSignatures.nistp521, BuiltinDHFactories.ecdhp521,
                          BuiltinCiphers.aes256ctr),
                  new Config(
                          "hostkey-ed25519.pem", BuiltinSignatures.ed25519, BuiltinDHFactories.curve25519,
                          BuiltinCiphers.aes256gcm)
          };
      }
  
      private static final class Config {
          final String privateKeyLocation;
          final BuiltinSignatures signatureAlgorithm;
          final BuiltinDHFactories kexAlgorithm;
          final BuiltinCiphers cipher;
  
          private Config(String privateKeyLocation, BuiltinSignatures signatureAlgorithm, BuiltinDHFactories kexAlgorithm,
                         BuiltinCiphers cipher) {
              this.privateKeyLocation = "src/test/resources/keys/" + privateKeyLocation;
              this.signatureAlgorithm = signatureAlgorithm;
              this.kexAlgorithm = kexAlgorithm;
              this.cipher = cipher;
          }
  
          @Override
          public String toString() {
              return String.format("%s: %s/%s/%s", privateKeyLocation, signatureAlgorithm, kexAlgorithm, cipher);
          }
      }
  
  }
  