/*
    * 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.logging.log4j.core.net.ssl;
  
  import java.security.KeyStoreException;
  import java.security.NoSuchAlgorithmException;
  import java.security.UnrecoverableKeyException;
  
  import javax.net.ssl.KeyManagerFactory;
  
  import org.apache.logging.log4j.core.config.plugins.Plugin;
  import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
  
  /**
   * Configuration of the KeyStore
   */
  @Plugin(name = "KeyStore", category = "Core", printObject = true)
  public class KeyStoreConfiguration extends AbstractKeyStoreConfiguration {
  
      private final String keyManagerFactoryAlgorithm;
  
      public KeyStoreConfiguration(final String location, final String password, final String keyStoreType,
              final String keyManagerFactoryAlgorithm) throws StoreConfigurationException {
          super(location, password, keyStoreType);
          this.keyManagerFactoryAlgorithm = keyManagerFactoryAlgorithm == null ? KeyManagerFactory.getDefaultAlgorithm()
                  : keyManagerFactoryAlgorithm;
      }
  
      /**
       * Creates a KeyStoreConfiguration.
       * 
       * @param location
       *        The location of the KeyStore.
       * @param password
       *        The password to access the KeyStore.
       * @param keyStoreType
       *        The KeyStore type, null defaults to {@code "JKS"}.
       * @param keyManagerFactoryAlgorithm
       *         The standard name of the requested algorithm. See the Java Secure Socket Extension Reference Guide for information about these names.
       * @return a new KeyStoreConfiguration
       * @throws StoreConfigurationException
       */
      @PluginFactory
      public static KeyStoreConfiguration createKeyStoreConfiguration(
              // @formatter:off
              @PluginAttribute("location") final String location,
              @PluginAttribute("password") final String password,
              @PluginAttribute("type") final String keyStoreType, 
              @PluginAttribute("keyManagerFactoryAlgorithm") final String keyManagerFactoryAlgorithm) throws StoreConfigurationException {
              // @formatter:on
          return new KeyStoreConfiguration(location, password, keyStoreType, keyManagerFactoryAlgorithm);
      }
  
      public KeyManagerFactory initKeyManagerFactory() throws NoSuchAlgorithmException, UnrecoverableKeyException,
              KeyStoreException {
          final KeyManagerFactory kmFactory = KeyManagerFactory.getInstance(this.keyManagerFactoryAlgorithm);
          kmFactory.init(this.getKeyStore(), this.getPasswordAsCharArray());
          return kmFactory;
      }
  }