package tsdemo;
// Class to alow Access manager to interface with the timestamp classes.
import oracle.sql.BLOB;
//import oracle.sql.*;
import oracle.jdbc.*;
import java.sql.*;
import java.io.*;

//
public class amTimestamp{
  //
  public static byte[] hash;
  //
  public static String fileName;
  //
  public static String timestamp;
  //
  public static oracle.sql.BLOB blobResponse;
  //
  public static String getHash() {
    //
    String stringHash;
    //System.out.println("Class Hash: " + hash);
    stringHash = hash.toString();
    //
    return stringHash;
  }
  //
  /* Private Declaration */
  private static Connection conn = null;
    
  /* Procedural Declaration */
  public static Connection getConnection() throws SQLException {
    if ( conn == null  ) {
      DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
      try {
        conn = DriverManager.getConnection("jdbc:default:connection:");
        System.out.println("connection=default");
      } catch ( Exception e ){}
    }
    if ( conn == null ) {
      conn = DriverManager.getConnection("jdbc:oracle:thin:@loordv01:1521:dev10g","eft_nom","eft_nom");
      System.out.println("connection=thin");
    }
    conn.setAutoCommit(false); // this is needed to write in update mode to BLOB
    return conn;
  }
  //
  public static oracle.sql.BLOB getRespBlob() throws SQLException,IOException {
    //
    // Returning a BLOB seems to be more tricky than expected
    // If you return the original BLOB you will get an error
    // from oracle, however loading it as a binary stream
    // returns the value rather than a reference so works.
    //
    // Connection os required to create a temporary BLOB.
    //
    conn = getConnection();
    BLOB tmpBlob = BLOB.createTemporary(conn, false,BLOB.DURATION_SESSION);
    //
    // Parameter to tmpBlob.setBinaryStream() is odd, got from a example and
    // as it works I've left it as is.
    //
    OutputStream os = tmpBlob.setBinaryStream(0L);
    //
    os.write(blobResponse.getBytes());
    os.flush();
    os.close();
    //
    return tmpBlob;
  }
  //
  public static String amTimestamp(oracle.sql.BLOB blobFile,
                                   String URL, 
                                   String password, 
                                   String keystore) throws Exception {
        //
        //System.out.println(" URL: " + URL + " password: " + password + "keystore: " + keystore);
        //
        // Declare an Oracle BLOB type so we can pass this back to the PLSQL to allow the entire 
        // timestamp response to be stored in the database (using the getRespBlob method)
        //
        blobResponse = oracle.sql.BLOB.empty_lob();
        timestamp    = null;
        //
        // Get the hash value for the entered file
        //
        hash = amHashFile.getHash(blobFile, "SHA-1");
        //System.out.println("Hash: " + hash);
        //
        // Instantiate a TimeStamp instance
        //
        TimeStamp ts = new TimeStamp();
        //
        //set the variables via the set methods
        //
        ts.setKeystoreFile(keystore);
        ts.setKeystorePassword(password);
        ts.setURL(URL);
        // generate the timestamp
         try {
            //
             timestamp = ts.generateTimestamp(hash,1318);
            //
            //System.out.println("Got Timestamp : " + timestamp);
            //
        } catch (Exception e) {
            //
            throw new TSException(e.getMessage());
            //System.out.println("Exception occured.\n" + e.getMessage());
        }
        //
        byte[] TSResp = ts.getResp();
        //
        // Retrieve the timesatmp response array from the timestamp class
        //
        blobResponse.setBytes(TSResp);
        //
        //System.out.println("BLOB length is : " + blobResponse.getLength());
        //
    return timestamp; 
}
  /**
   * 
   * @param args
   */
public static void main(String[] args)
  {
  // Created for testing from JAVA rather than for actual use.
  //System.out.println("Got here 1");
  //String errMsg = "We";
  amTimestamp theTimestamp = new amTimestamp();
  //
  oracle.sql.BLOB  emptyBlob = null; 
  //
  try {
    //
    String timeVal = theTimestamp.amTimestamp(emptyBlob,"https://tsa.trust-sign.hu:1318/","almafa","C:\\EFT_Noms\\keystore.jks");
    //
    System.out.println(" TimeVal: " + timeVal);
    }
  catch (Exception e) {
    //
    //if (e.getMessage() != null) 
    System.out.println(e.getMessage()); 
    //
    }
  }
}