package it.valueteam.securityutility;

import java.io.*;
import java.util.Properties;
import java.security.*;

/**
 * <p>Title: </p>
 * <p>Description: Classe per il caricamento nella shared memory della
 *  chiave simmetrica dle sistema</p>
 * <p>Copyright: Copyright (c) 2006</p>
 * <p>Company: </p>
 * @author Paolo Marini
 * @version 1.0
 */

public class KeyManager {

  public KeyManager() {
  }

  public static void main(String[] args) {
    FileInputStream in = null;
    Properties config = null;
    int indirizzo;
    KeyStore store = null;
    Key encryptionKey = null;
    String passphrase = null;

    String confFile = System.getProperty("security_conf_file");

    try {
      System.out.println("Inizio caricamento chiave.");
      in = new FileInputStream(confFile);
      config = new Properties();
      config.load(in);
      in.close();

      passphrase = "";
      Process proc = Runtime.getRuntime().exec("pswd.so");
      BufferedReader reader = new BufferedReader(new InputStreamReader(proc.
          getInputStream()));
      passphrase = reader.readLine();

      if (passphrase==null ||  passphrase.length()== 0) {
        System.out.println("Specificare la passphrase");
        System.exit(1);
      }


      in = new FileInputStream(config.getProperty(CryptoUtility.FILE_KEY));
      store = KeyStore.getInstance("JCEKS");
      store.load(in,passphrase.toCharArray());
      encryptionKey = store.getKey("alias",passphrase.toCharArray());

      indirizzo = "true".equalsIgnoreCase(config.getProperty(CryptoUtility.INDIRIZZO_DINAMICO))?
          Integer.parseInt(config.getProperty(CryptoUtility.MEMORY_ADDRESS)):
          CryptoUtility.INDIRIZZO_STATICO;

      KeyJNIBridge bridge = new KeyJNIBridge();
      bridge.writeKey(indirizzo,encryptionKey.getEncoded());
      System.out.println("Caricamento chiave terminato con successo.");
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
    finally {
      if(in!=null) {
        try {
          in.close();
        }
        catch (IOException ex1) {
        }
      }
    }
  }

}