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.kafka.common.security.oauthbearer;
  
  import org.apache.kafka.common.KafkaException;
  import org.apache.kafka.common.config.SaslConfigs;
  import org.apache.kafka.common.security.oauthbearer.internals.secured.OAuthBearerTest;
  
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Test;
  
  import java.io.IOException;
  import java.security.GeneralSecurityException;
  import java.util.List;
  import java.util.Map;
  
  import javax.security.auth.login.AppConfigurationEntry;
  
  import static org.apache.kafka.common.config.SaslConfigs.DEFAULT_SASL_OAUTHBEARER_ASSERTION_ALGORITHM;
  import static org.apache.kafka.common.config.SaslConfigs.SASL_OAUTHBEARER_ASSERTION_ALGORITHM;
  import static org.apache.kafka.common.config.SaslConfigs.SASL_OAUTHBEARER_ASSERTION_FILE;
  import static org.apache.kafka.common.config.SaslConfigs.SASL_OAUTHBEARER_ASSERTION_PRIVATE_KEY_FILE;
  import static org.apache.kafka.common.config.SaslConfigs.SASL_OAUTHBEARER_TOKEN_ENDPOINT_URL;
  import static org.apache.kafka.common.config.internals.BrokerSecurityConfigs.ALLOWED_SASL_OAUTHBEARER_FILES_CONFIG;
  import static org.apache.kafka.common.config.internals.BrokerSecurityConfigs.ALLOWED_SASL_OAUTHBEARER_URLS_CONFIG;
  import static org.apache.kafka.common.security.oauthbearer.OAuthBearerLoginModule.OAUTHBEARER_MECHANISM;
  import static org.apache.kafka.test.TestUtils.tempFile;
  import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
  import static org.junit.jupiter.api.Assertions.assertInstanceOf;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class JwtBearerJwtRetrieverTest extends OAuthBearerTest {
  
      @AfterEach
      public void tearDown() throws Exception {
          System.clearProperty(ALLOWED_SASL_OAUTHBEARER_URLS_CONFIG);
          System.clearProperty(ALLOWED_SASL_OAUTHBEARER_FILES_CONFIG);
      }
  
      @Test
      public void testConfigure() throws Exception {
          String tokenEndpointUrl = "https://www.example.com";
          String privateKeyFile = generatePrivateKey().getPath();
  
          System.setProperty(ALLOWED_SASL_OAUTHBEARER_URLS_CONFIG, tokenEndpointUrl);
          System.setProperty(ALLOWED_SASL_OAUTHBEARER_FILES_CONFIG, privateKeyFile);
  
          Map<String, ?> configs = getSaslConfigs(
              Map.of(
                  SASL_OAUTHBEARER_TOKEN_ENDPOINT_URL, tokenEndpointUrl,
                  SASL_OAUTHBEARER_ASSERTION_ALGORITHM, DEFAULT_SASL_OAUTHBEARER_ASSERTION_ALGORITHM,
                  SASL_OAUTHBEARER_ASSERTION_PRIVATE_KEY_FILE, privateKeyFile
              )
          );
  
          List<AppConfigurationEntry> jaasConfigEntries = getJaasConfigEntries();
  
          try (JwtBearerJwtRetriever jwtRetriever = new JwtBearerJwtRetriever()) {
              assertDoesNotThrow(() -> jwtRetriever.configure(configs, OAUTHBEARER_MECHANISM, jaasConfigEntries));
          }
      }
  
      @Test
      public void testConfigureWithMalformedPrivateKey() throws Exception {
          String tokenEndpointUrl = "https://www.example.com";
          String malformedPrivateKeyFile = tempFile().getPath();
  
          System.setProperty(ALLOWED_SASL_OAUTHBEARER_URLS_CONFIG, tokenEndpointUrl);
          System.setProperty(ALLOWED_SASL_OAUTHBEARER_FILES_CONFIG, malformedPrivateKeyFile);
  
          Map<String, ?> configs = getSaslConfigs(
              Map.of(
                  SASL_OAUTHBEARER_TOKEN_ENDPOINT_URL, tokenEndpointUrl,
                  SASL_OAUTHBEARER_ASSERTION_ALGORITHM, DEFAULT_SASL_OAUTHBEARER_ASSERTION_ALGORITHM,
                  SASL_OAUTHBEARER_ASSERTION_PRIVATE_KEY_FILE, malformedPrivateKeyFile
              )
          );
  
          List<AppConfigurationEntry> jaasConfigEntries = getJaasConfigEntries();
  
          try (JwtBearerJwtRetriever jwtRetriever = new JwtBearerJwtRetriever()) {
              KafkaException e = assertThrows(KafkaException.class, () -> jwtRetriever.configure(configs, OAUTHBEARER_MECHANISM, jaasConfigEntries));
              assertNotNull(e.getCause());
              assertInstanceOf(GeneralSecurityException.class, e.getCause());
          }
      }
  
      @Test
      public void testConfigureWithStaticAssertion() throws Exception {
          String tokenEndpointUrl = "https://www.example.com";
          String assertionFile = tempFile(createJwt("jdoe")).getPath();
  
          System.setProperty(ALLOWED_SASL_OAUTHBEARER_URLS_CONFIG, tokenEndpointUrl);
          System.setProperty(ALLOWED_SASL_OAUTHBEARER_FILES_CONFIG, assertionFile);
  
          Map<String, ?> configs = getSaslConfigs(
              Map.of(
                  SASL_OAUTHBEARER_TOKEN_ENDPOINT_URL, tokenEndpointUrl,
                  SASL_OAUTHBEARER_ASSERTION_ALGORITHM, DEFAULT_SASL_OAUTHBEARER_ASSERTION_ALGORITHM,
                  SASL_OAUTHBEARER_ASSERTION_FILE, assertionFile
              )
          );
  
          List<AppConfigurationEntry> jaasConfigEntries = getJaasConfigEntries();
  
          try (JwtBearerJwtRetriever jwtRetriever = new JwtBearerJwtRetriever()) {
              assertDoesNotThrow(() -> jwtRetriever.configure(configs, OAUTHBEARER_MECHANISM, jaasConfigEntries));
          }
      }
  
      @Test
      public void testConfigureWithInvalidPassphrase() throws Exception {
          String tokenEndpointUrl = "https://www.example.com";
          String privateKeyFile = generatePrivateKey().getPath();
  
          System.setProperty(ALLOWED_SASL_OAUTHBEARER_URLS_CONFIG, tokenEndpointUrl);
          System.setProperty(ALLOWED_SASL_OAUTHBEARER_FILES_CONFIG, privateKeyFile);
  
          Map<String, ?> configs = getSaslConfigs(
              Map.of(
                  SASL_OAUTHBEARER_TOKEN_ENDPOINT_URL, tokenEndpointUrl,
                  SASL_OAUTHBEARER_ASSERTION_ALGORITHM, DEFAULT_SASL_OAUTHBEARER_ASSERTION_ALGORITHM,
                  SASL_OAUTHBEARER_ASSERTION_PRIVATE_KEY_FILE, privateKeyFile,
                  SaslConfigs.SASL_OAUTHBEARER_ASSERTION_PRIVATE_KEY_PASSPHRASE, "this-passphrase-is-invalid"
              )
          );
  
          List<AppConfigurationEntry> jaasConfigEntries = getJaasConfigEntries();
  
          try (JwtBearerJwtRetriever jwtRetriever = new JwtBearerJwtRetriever()) {
              KafkaException e = assertThrows(KafkaException.class, () -> jwtRetriever.configure(configs, OAUTHBEARER_MECHANISM, jaasConfigEntries));
              assertNotNull(e.getCause());
              assertInstanceOf(IOException.class, e.getCause());
          }
      }
  }
  