content: /*
   * Copyright (c) 2017, Andreas Fagschlunger. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   *   - Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   *
   *   - Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in the
   *     documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package at.o2xfs.emv.crypto.impl;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.Properties;
  
  import at.o2xfs.emv.crypto.KeyStore;
  import at.o2xfs.emv.crypto.KeyStoreFactory;
  import at.o2xfs.log.Logger;
  import at.o2xfs.log.LoggerFactory;
  
  public class PropertiesKeyStoreFactoryImpl extends KeyStoreFactory {
  
  	private static final Logger LOG = LoggerFactory
  			.getLogger(PropertiesKeyStoreFactoryImpl.class);
  
  	private final Properties keyStore;
  
  	public PropertiesKeyStoreFactoryImpl() {
  		keyStore = new Properties();
  	}
  
  	private void loadKeyStoreFromFile() {
  		final String method = "createKeyStore()";
  		File file = new File("keystore.properties");
  		InputStream inStream = null;
  		try {
  			inStream = new FileInputStream(file);
  			keyStore.load(inStream);
  		} catch (Exception e) {
  			if (LOG.isErrorEnabled()) {
  				LOG.error(
  						method,
  						"Error loading key store from file: "
  								+ file.getAbsolutePath(), e);
  			}
  		} finally {
  			if (inStream != null) {
  				try {
  					inStream.close();
  				} catch (IOException e) {
  					if (LOG.isErrorEnabled()) {
  						LOG.error(method, "Error closing stream", e);
  					}
  				}
  			}
  		}
  	}
  
  	@Override
  	public KeyStore createKeyStore() {
  		if (keyStore.isEmpty()) {
  			loadKeyStoreFromFile();
  		}
  		return new PropertiesKeyStore(keyStore);
  	}
  }