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.ambari.server.security.encryption;
  
  import java.io.File;
  import java.lang.reflect.Field;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.ambari.server.security.credential.Credential;
  import org.apache.ambari.server.security.credential.GenericKeyCredential;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  
  import com.google.common.base.Ticker;
  
  import junit.framework.Assert;
  
  public class CredentialStoreTest {
  
    @Rule
    public TemporaryFolder tmpFolder = new TemporaryFolder();
  
    @Before
    public void setUp() throws Exception {
      tmpFolder.create();
    }
  
    @After
    public void cleanUp() throws Exception {
      tmpFolder.delete();
    }
  
    @Test
    public void testFileBasedCredentialStoreService_AddCredentialToStoreWithPersistMaster() throws Exception {
      addCredentialToStoreWithPersistMasterTest(new FileBasedCredentialStoreServiceFactory(), new DefaultMasterKeyServiceFactory());
    }
  
    @Test
    public void testFileBasedCredentialStoreService_AddCredentialToStore() throws Exception {
      addCredentialToStoreTest(new FileBasedCredentialStoreServiceFactory(), new DefaultMasterKeyServiceFactory());
    }
  
    @Test
    public void testFileBasedCredentialStoreService_GetCredential() throws Exception {
      getCredentialTest(new FileBasedCredentialStoreServiceFactory(), new DefaultMasterKeyServiceFactory());
    }
  
    @Test
    public void testFileBasedCredentialStoreService_RemoveCredential() throws Exception {
      removeCredentialTest(new FileBasedCredentialStoreServiceFactory(), new DefaultMasterKeyServiceFactory());
    }
  
    @Test
    public void testInMemoryCredentialStoreService_AddCredentialToStoreWithPersistMaster() throws Exception {
      addCredentialToStoreWithPersistMasterTest(new InMemoryCredentialStoreServiceFactory(), new DefaultMasterKeyServiceFactory());
    }
  
    @Test
    public void testInMemoryCredentialStoreService_AddCredentialToStore() throws Exception {
      addCredentialToStoreTest(new InMemoryCredentialStoreServiceFactory(), new DefaultMasterKeyServiceFactory());
    }
  
    @Test
    public void testInMemoryCredentialStoreService_GetCredential() throws Exception {
      getCredentialTest(new InMemoryCredentialStoreServiceFactory(), new DefaultMasterKeyServiceFactory());
    }
  
    @Test
    public void testInMemoryCredentialStoreService_RemoveCredential() throws Exception {
      removeCredentialTest(new InMemoryCredentialStoreServiceFactory(), new DefaultMasterKeyServiceFactory());
    }
  
    @Test
    public void testInMemoryCredentialStoreService_CredentialExpired() throws Exception {
      getExpiredCredentialTest(new InMemoryCredentialStoreServiceFactory(), new DefaultMasterKeyServiceFactory());
    }
  
    private void addCredentialToStoreWithPersistMasterTest(CredentialStoreServiceFactory credentialStoreServiceFactory,
                                                           MasterKeyServiceFactory masterKeyServiceFactory) throws Exception {
      File directory = tmpFolder.getRoot();
  
      String masterKey = "ThisIsSomeSecretPassPhrase1234";
      File masterKeyFile = new File(directory, "master");
  
      MasterKeyService masterKeyService = masterKeyServiceFactory.createPersisted(masterKeyFile, masterKey);
      CredentialStore credentialStore = credentialStoreServiceFactory.create(directory, masterKeyService);
  
      String password = "mypassword";
      credentialStore.addCredential("myalias", new GenericKeyCredential(password.toCharArray()));
      Credential credential = credentialStore.getCredential("myalias");
      Assert.assertEquals(password, new String(credential.toValue()));
  
      Assert.assertTrue(masterKeyFile.exists());
    }
  
    private void addCredentialToStoreTest(CredentialStoreServiceFactory credentialStoreServiceFactory,
                                          MasterKeyServiceFactory masterKeyServiceFactory) throws Exception {
      File directory = tmpFolder.getRoot();
  
      String masterKey = "ThisIsSomeSecretPassPhrase1234";
      File masterKeyFile = new File(directory, "master");
  
      MasterKeyService masterKeyService = masterKeyServiceFactory.create(masterKey);
      CredentialStore credentialStore = credentialStoreServiceFactory.create(directory, masterKeyService);
  
      String password = "mypassword";
      credentialStore.addCredential("password", new GenericKeyCredential(password.toCharArray()));
      Credential credential = credentialStore.getCredential("password");
      Assert.assertEquals(password, new String(credential.toValue()));
  
      credentialStore.addCredential("null_password", null);
      Assert.assertNull(credentialStore.getCredential("null_password"));
  
      credentialStore.addCredential("empty_password", new GenericKeyCredential(new char[0]));
      Assert.assertNull(credentialStore.getCredential("empty_password"));
  
      Assert.assertFalse(masterKeyFile.exists());
    }
  
    private void getCredentialTest(CredentialStoreServiceFactory credentialStoreServiceFactory,
                                   MasterKeyServiceFactory masterKeyServiceFactory) throws Exception {
      File directory = tmpFolder.getRoot();
  
      String masterKey = "ThisIsSomeSecretPassPhrase1234";
  
      MasterKeyService masterKeyService = masterKeyServiceFactory.create(masterKey);
      CredentialStore credentialStore = credentialStoreServiceFactory.create(directory, masterKeyService);
  
      Assert.assertNull(credentialStore.getCredential(""));
      Assert.assertNull(credentialStore.getCredential(null));
  
      String password = "mypassword";
      credentialStore.addCredential("myalias", new GenericKeyCredential(password.toCharArray()));
      Credential credential = credentialStore.getCredential("myalias");
      Assert.assertEquals(password, new String(credential.toValue()));
  
      Assert.assertNull(credentialStore.getCredential("does_not_exist"));
    }
  
    private void getExpiredCredentialTest(CredentialStoreServiceFactory credentialStoreServiceFactory,
                                   MasterKeyServiceFactory masterKeyServiceFactory) throws Exception {
      File directory = tmpFolder.getRoot();
  
      String masterKey = "ThisIsSomeSecretPassPhrase1234";
  
      MasterKeyService masterKeyService = masterKeyServiceFactory.create(masterKey);
      CredentialStore credentialStore = credentialStoreServiceFactory.create(directory, masterKeyService);
  
      // replace cache ticker with manual to avoid timeout issues during check
      TestTicker ticker = new TestTicker(0);
  
      Field cacheFiled = InMemoryCredentialStore.class.getDeclaredField("cache");
      cacheFiled.setAccessible(true);
  
      Object cache = cacheFiled.get(credentialStore);
  
      Class localManualCacheClass = Class.forName("com.google.common.cache.LocalCache$LocalManualCache");
      Field localCacheField = localManualCacheClass.getDeclaredField("localCache");
      localCacheField.setAccessible(true);
  
      Class localCacheClass = Class.forName("com.google.common.cache.LocalCache");
      Object localCache = localCacheField.get(cache);
  
      Field tickerField = localCacheClass.getDeclaredField("ticker");
      tickerField.setAccessible(true);
      tickerField.set(localCache, ticker);
  
      String password = "mypassword";
      credentialStore.addCredential("myalias", new GenericKeyCredential(password.toCharArray()));
      Assert.assertEquals(password, new String(credentialStore.getCredential("myalias").toValue()));
  
      // 250 msec
      ticker.setCurrentNanos(250*1000*1000);
      Assert.assertEquals(password, new String(credentialStore.getCredential("myalias").toValue()));
  
      // 550 msec
      ticker.setCurrentNanos(550*1000*1000);
      Assert.assertNull(password, credentialStore.getCredential("myalias"));
  
    }
  
    private void removeCredentialTest(CredentialStoreServiceFactory credentialStoreServiceFactory,
                                      MasterKeyServiceFactory masterKeyServiceFactory) throws Exception {
      File directory = tmpFolder.getRoot();
  
      String masterKey = "ThisIsSomeSecretPassPhrase1234";
  
      MasterKeyService masterKeyService = masterKeyServiceFactory.create(masterKey);
      CredentialStore credentialStore = credentialStoreServiceFactory.create(directory, masterKeyService);
  
      String password = "mypassword";
      credentialStore.addCredential("myalias", new GenericKeyCredential(password.toCharArray()));
  
      Credential credential = credentialStore.getCredential("myalias");
      Assert.assertEquals(password, new String(credential.toValue()));
  
      credentialStore.removeCredential("myalias");
      Assert.assertNull(credentialStore.getCredential("myalias"));
  
      credentialStore.addCredential("myalias", new GenericKeyCredential(password.toCharArray()));
      credential = credentialStore.getCredential("myalias");
      Assert.assertEquals(password, new String(credential.toValue()));
  
      credentialStore = credentialStoreServiceFactory.create(directory, masterKeyService);
      credentialStore.setMasterKeyService(masterKeyService);
  
      credentialStore.removeCredential("myalias");
      Assert.assertNull(credentialStore.getCredential("myalias"));
  
      credentialStore.removeCredential("does_not_exist");
    }
  
    private interface CredentialStoreServiceFactory {
      CredentialStore create(File path, MasterKeyService masterKeyService);
    }
  
    private class FileBasedCredentialStoreServiceFactory implements CredentialStoreServiceFactory {
      @Override
      public CredentialStore create(File path, MasterKeyService masterKeyService) {
        CredentialStore credentialStore = new FileBasedCredentialStore(path);
        credentialStore.setMasterKeyService(masterKeyService);
        return credentialStore;
      }
    }
  
    private class InMemoryCredentialStoreServiceFactory implements CredentialStoreServiceFactory {
      @Override
      public CredentialStore create(File path, MasterKeyService masterKeyService) {
        CredentialStore credentialStore = new InMemoryCredentialStore(500, TimeUnit.MILLISECONDS, false);
        credentialStore.setMasterKeyService(masterKeyService);
        return credentialStore;
      }
    }
  
    private interface MasterKeyServiceFactory {
      MasterKeyService create(String masterKey);
  
      MasterKeyService createPersisted(File masterKeyFile, String masterKey);
    }
  
    private class DefaultMasterKeyServiceFactory implements MasterKeyServiceFactory {
  
      @Override
      public MasterKeyService create(String masterKey) {
        return new MasterKeyServiceImpl(masterKey);
      }
  
      @Override
      public MasterKeyService createPersisted(File masterKeyFile, String masterKey) {
        new MasterKeyServiceImpl("dummyKey").initializeMasterKeyFile(masterKeyFile, masterKey);
        return new MasterKeyServiceImpl(masterKeyFile);
      }
    }
  
    private class TestTicker extends Ticker {
  
      private long currentNanos;
  
      public TestTicker(long currentNanos) {
        this.currentNanos = currentNanos;
      }
  
      @Override
      public long read() {
        return currentNanos;
      }
  
      public void setCurrentNanos(long currentNanos) {
        this.currentNanos = currentNanos;
      }
    }
  
  }
  