Siba/src/org/dclermonte/siba/gui/CheckPanel.java

package org.dclermonte.siba.gui;

import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JFileChooser;

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import com.jgoodies.forms.layout.FormLayout;
import com.jgoodies.forms.layout.ColumnSpec;
import com.jgoodies.forms.layout.FormSpecs;
import com.jgoodies.forms.layout.RowSpec;
import com.jgoodies.forms.layout.Sizes;
import javax.swing.JTextField;
import javax.swing.filechooser.FileNameExtensionFilter;

public class CheckPanel extends JPanel
{
	private JTextField textField;

	/**
	 * Create the panel.
	 */
	public CheckPanel()
	{
		setLayout(new FormLayout(new ColumnSpec[] {
				ColumnSpec.decode("2dlu"),
				new ColumnSpec(ColumnSpec.LEFT, Sizes.bounded(Sizes.PREFERRED, Sizes.constant("50dlu", true), Sizes.constant("60dlu", true)), 1),
				new ColumnSpec(ColumnSpec.LEFT, Sizes.bounded(Sizes.PREFERRED, Sizes.constant("50dlu", true), Sizes.constant("100dlu", true)), 1),
				ColumnSpec.decode("30dlu"),},
			new RowSpec[] {
				FormSpecs.LINE_GAP_ROWSPEC,
				RowSpec.decode("25px"),
				FormSpecs.RELATED_GAP_ROWSPEC,
				FormSpecs.DEFAULT_ROWSPEC,}));
		
		JLabel lblNewLabel = new JLabel("Sauvegarde à vérifier");
		add(lblNewLabel, "2, 2, left, center");
		
		JButton btnNewButton = new JButton("...");
		btnNewButton.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				try
				{
					repertoireChoisi();
				}
				catch (IOException e1)
				{
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
				catch (NoSuchAlgorithmException e1)
				{
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
			}
		});
		
		textField = new JTextField();
		add(textField, "3, 2, fill, default");
		textField.setColumns(10);
		add(btnNewButton, "4, 2, left, top");
		
		JButton btnNewButton_1 = new JButton("Check");
		add(btnNewButton_1, "3, 4");

	}

			final void repertoireChoisi() throws IOException, NoSuchAlgorithmException {
		final JFileChooser fc = new JFileChooser();
		FileNameExtensionFilter filter = new FileNameExtensionFilter("Fichiers md5","md5");
		fc.addChoosableFileFilter(filter);
		fc.setFileSelectionMode(JFileChooser.FILES_ONLY);
		
		int returnVal = fc.showDialog(CheckPanel.this,"Sauvegarde à vérifier");
		if (returnVal == JFileChooser.APPROVE_OPTION){
			File file = fc.getSelectedFile();
			textField.setText(file.getPath());
			FileReader fileReader = new FileReader(file);
			char[] md5 = new char[32];
			byte[] md5byte = new byte[32];
			char[] fileToCheck = new char[(int) (file.length())-32];
			for (int index=0;index<32;index++){
				md5[index]= (char) fileReader.read();
				md5byte[index]=(byte) md5[index] ;
			}
			fileReader.read();
			String fileNameToString = new String();
			for (int index=36;index<file.length()+3;index++){
				fileToCheck[index-36]= (char) fileReader.read();
			}
			fileNameToString= String.copyValueOf(fileToCheck);
			File fileToCheck1 = new File(fileNameToString);
			fileReader.close();
			byte[] bytedirectoryToSave = new byte[(int) fileToCheck.length] ; 
			 FileInputStream fileInputStream = new FileInputStream(file);
			 for ( int index1 = 0 ;index1< fileNameToString.length();index1++)
			 {
				 bytedirectoryToSave[index1] = (byte) fileInputStream.read();
			 }
			
			 
			byte[] hash = null;
			MessageDigest messageDigest = MessageDigest.getInstance("MD5");
			hash = messageDigest.digest(bytedirectoryToSave);
			if (messageDigest.isEqual(hash, md5byte)){
				System.out.println("gagné");}
				else {
					System.out.println("Perdu");
			}
		}
		
			}
	}