/*
    *
    * 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.hadoop.hbase.util;
  
  import static org.junit.Assert.fail;
  
  import java.io.IOException;
  import java.security.Key;
  
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.hbase.HBaseConfiguration;
  import org.apache.hadoop.hbase.HConstants;
  import org.apache.hadoop.hbase.io.crypto.Cipher;
  import org.apache.hadoop.hbase.io.crypto.CipherProvider;
  import org.apache.hadoop.hbase.io.crypto.DefaultCipherProvider;
  import org.apache.hadoop.hbase.io.crypto.KeyProvider;
  import org.apache.hadoop.hbase.io.crypto.KeyProviderForTesting;
  import org.apache.hadoop.hbase.testclassification.SmallTests;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  
  @Category(SmallTests.class)
  public class TestEncryptionTest {
  
    @Test
    public void testTestKeyProvider() {
      Configuration conf = HBaseConfiguration.create();
      try {
        conf.set(HConstants.CRYPTO_KEYPROVIDER_CONF_KEY, KeyProviderForTesting.class.getName());
        EncryptionTest.testKeyProvider(conf);
      } catch (Exception e) {
        fail("Instantiation of test key provider should have passed");
      }
      try {
        conf.set(HConstants.CRYPTO_KEYPROVIDER_CONF_KEY, FailingKeyProvider.class.getName());
        EncryptionTest.testKeyProvider(conf);
        fail("Instantiation of bad test key provider should have failed check");
      } catch (IOException e) { }
    }
  
    @Test
    public void testTestCipherProvider() {
      Configuration conf = HBaseConfiguration.create();
      try {
        conf.set(HConstants.CRYPTO_CIPHERPROVIDER_CONF_KEY, DefaultCipherProvider.class.getName());
        EncryptionTest.testCipherProvider(conf);
      } catch (Exception e) {
        fail("Instantiation of test cipher provider should have passed");
      }
      try {
        conf.set(HConstants.CRYPTO_CIPHERPROVIDER_CONF_KEY, FailingCipherProvider.class.getName());
        EncryptionTest.testCipherProvider(conf);
        fail("Instantiation of bad test cipher provider should have failed check");
      } catch (IOException e) { }
    }
  
    @Test
    public void testTestCipher() {
      Configuration conf = HBaseConfiguration.create();
      conf.set(HConstants.CRYPTO_KEYPROVIDER_CONF_KEY, KeyProviderForTesting.class.getName());
      String algorithm =
          conf.get(HConstants.CRYPTO_KEY_ALGORITHM_CONF_KEY, HConstants.CIPHER_AES);
      try {
        EncryptionTest.testEncryption(conf, algorithm, null);
      } catch (Exception e) {
        fail("Test for cipher " + algorithm + " should have succeeded");
      }
      try {
        EncryptionTest.testEncryption(conf, "foobar", null);
        fail("Test for bogus cipher should have failed");
      } catch (IOException e) { }
    }
  
    public static class FailingKeyProvider implements KeyProvider {
  
      @Override
      public void init(String params) {
        throw new RuntimeException("BAD!");
      }
  
      @Override
      public Key getKey(String alias) {
       return null;
     }
 
     @Override
     public Key[] getKeys(String[] aliases) {
       return null;
     }
 
   }
 
   public static class FailingCipherProvider implements CipherProvider {
 
     public FailingCipherProvider() {
       super();
       throw new RuntimeException("BAD!");
     }
 
     @Override
     public Configuration getConf() {
       return null;
     }
 
     @Override
     public void setConf(Configuration conf) {
     }
 
     @Override
     public String getName() {
       return null;
     }
 
     @Override
     public String[] getSupportedCiphers() {
       return null;
     }
 
     @Override
     public Cipher getCipher(String name) {
       return null;
     }
     
   }
 }