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tentative de BDD avec le servlet

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This commit is contained in:
m-gues 2021-01-31 18:39:35 +01:00
parent a66c73dc75
commit 0caf039c1c
20 changed files with 831 additions and 421 deletions
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8
POO/src/messages/MauvaisTypeMessageException.java
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@ -1,8 +0,0 @@
package messages;
public class MauvaisTypeMessageException extends Exception {
private static final long serialVersionUID = 1L;
}

69
POO/src/messages/Message.java
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@ -1,69 +0,0 @@
package messages;
import java.io.Serializable;
import java.lang.instrument.Instrumentation;
import java.util.Arrays;
import messages.Message.TypeMessage;
public abstract class Message implements Serializable {
public enum TypeMessage {JE_SUIS_CONNECTE, JE_SUIS_DECONNECTE, INFO_PSEUDO, TEXTE, IMAGE, FICHIER, MESSAGE_NUL}
protected TypeMessage type;
private static final long serialVersionUID = 1L;
private static Instrumentation inst;
public TypeMessage getTypeMessage() {
return this.type;
}
protected abstract String attributsToString();
public String toString() {
return this.type+"###"+this.attributsToString();
}
public static Message stringToMessage(String messageString) {
try {
String[] parts = messageString.split("###");
switch (parts[0]) {
case "JE_SUIS_CONNECTE" :
return new MessageSysteme(TypeMessage.JE_SUIS_CONNECTE);
case "JE_SUIS_DECONNECTE" :
return new MessageSysteme(TypeMessage.JE_SUIS_DECONNECTE);
case "INFO_PSEUDO" :
return new MessageSysteme(TypeMessage.INFO_PSEUDO, parts[1], parts[2], Integer.parseInt(parts[3]) );
case "TEXTE" :
return new MessageTexte(TypeMessage.TEXTE, parts[1]);
case "IMAGE" :
return new MessageFichier(TypeMessage.IMAGE, parts[1], parts[2]);
case "FICHIER" :
return new MessageFichier(TypeMessage.FICHIER, parts[1], parts[2]);
}
} catch (MauvaisTypeMessageException e) {}
return null;
}
//tests ici
public static void main(String[] args) throws MauvaisTypeMessageException {
Message m1 = new MessageSysteme(TypeMessage.JE_SUIS_CONNECTE);
Message m2 = new MessageSysteme(TypeMessage.JE_SUIS_DECONNECTE);
Message m3 = new MessageSysteme(TypeMessage.INFO_PSEUDO, "pseudo156434518", "id236", 1500);
Message m4 = new MessageTexte(TypeMessage.TEXTE, "blablabla");
Message m5 = new MessageFichier(TypeMessage.FICHIER, "truc", ".pdf");
System.out.println(Message.stringToMessage(m1.toString()));
System.out.println(Message.stringToMessage(m2.toString()));
System.out.println(Message.stringToMessage(m3.toString()));
System.out.println(Message.stringToMessage(m4.toString()));
System.out.println(Message.stringToMessage(m5.toString()));
}
}

33
POO/src/messages/MessageFichier.java
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@ -1,33 +0,0 @@
package messages;
import messages.Message.TypeMessage;
public class MessageFichier extends Message {
private static final long serialVersionUID = 1L;
private String contenu;
private String extension;
public MessageFichier(TypeMessage type, String contenu, String extension) throws MauvaisTypeMessageException{
if ((type==TypeMessage.IMAGE)||(type==TypeMessage.FICHIER)) {
this.type=type;
this.contenu=contenu;
this.extension=extension;
}
else throw new MauvaisTypeMessageException();
}
public String getContenu() {
return this.contenu;
}
public String getExtension() {
return this.extension;
}
@Override
protected String attributsToString() {
return this.contenu+"###"+this.extension;
}
}

46
POO/src/messages/MessageSysteme.java
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@ -1,46 +0,0 @@
package messages;
public class MessageSysteme extends Message {
private static final long serialVersionUID = 1L;
private String pseudo;
private String id;
private int port;
public MessageSysteme(TypeMessage type) throws MauvaisTypeMessageException{
if ((type==TypeMessage.JE_SUIS_CONNECTE)||(type==TypeMessage.JE_SUIS_DECONNECTE)||(type==TypeMessage.MESSAGE_NUL)) {
this.type=type;
this.pseudo="";
this.id="";
this.port = -1;
}
else throw new MauvaisTypeMessageException();
}
public MessageSysteme(TypeMessage type, String pseudo, String id, int port) throws MauvaisTypeMessageException {
if (type==TypeMessage.INFO_PSEUDO) {
this.type=type;
this.pseudo=pseudo;
this.id=id;
this.port = port;
}
else throw new MauvaisTypeMessageException();
}
public String getPseudo() {
return this.pseudo;
}
public String getId() {
return this.id;
}
public int getPort() {
return this.port;
}
@Override
protected String attributsToString() {
return this.pseudo+"###"+this.id+"###"+this.port;
}
}

27
POO/src/messages/MessageTexte.java
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@ -1,27 +0,0 @@
package messages;
import messages.Message.TypeMessage;
public class MessageTexte extends Message {
private static final long serialVersionUID = 1L;
private String contenu;
public MessageTexte(TypeMessage type, String contenu) throws MauvaisTypeMessageException{
if (type==TypeMessage.TEXTE) {
this.type=type;
this.contenu=contenu;
}
else throw new MauvaisTypeMessageException();
}
public String getContenu() {
return this.contenu;
}
@Override
protected String attributsToString() {
return this.contenu;
}
}

42
POO_Server/src/communication/CommunicationUDP.java
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@ -139,7 +139,7 @@ public class CommunicationUDP extends Thread {
users.remove(index);
}
try {
Message message = new MessageSysteme(Message.TypeMessage.JE_SUIS_DECONNECTE, idClient);
Message message = new MessageSysteme(Message.TypeMessage.JE_SUIS_DECONNECTE, pseudoClient, idClient, port);
observer.update(this, message);
} catch (MauvaisTypeMessageException e) {
e.printStackTrace();
@ -154,15 +154,6 @@ public class CommunicationUDP extends Thread {
}
public void sendMessageConnecte() throws UnknownHostException, IOException {
for(int port : this.portOthers) {
try {
this.client.sendMessageUDP_local(new MessageSysteme(Message.TypeMessage.JE_SUIS_CONNECTE, Utilisateur.getSelf().getId()), port, InetAddress.getLocalHost());
} catch (MauvaisTypeMessageException e) {/*Si ça marche pas essayer là*/}
}
}
// Send the message "add,id,pseudo" to localhost on all the ports in
// "portOthers"
// This allows the receivers' agent (portOthers) to create or modify an entry with the
@ -199,19 +190,7 @@ public class CommunicationUDP extends Thread {
}
// Send the message "del,id,pseudo" to localhost on all the ports in
// "portOthers"
// This allows the receivers' agent (portOthers) to delete the entry
// corresponding to this agent
public void sendMessageDelete() throws UnknownHostException, IOException {
for(int port : this.portOthers) {
try {
this.client.sendMessageUDP_local(new MessageSysteme(Message.TypeMessage.JE_SUIS_DECONNECTE, Utilisateur.getSelf().getId()), port, InetAddress.getLocalHost());
} catch (MauvaisTypeMessageException e) {}
}
}
//Broadcast a given message on the local network
//Broadcast a given message on the local network (here podelized by ports)
public void sendMessage(Message m) {
try {
for(int port : this.portOthers) {
@ -233,21 +212,4 @@ public class CommunicationUDP extends Thread {
}
}
//Pas encore adapte message
// private void sendIDPseudo_broadcast(String prefixe) throws UnknownHostException, IOException {
// Utilisateur self = Utilisateur.getSelf();
// String idSelf = self.getId();
// String pseudoSelf = self.getPseudo();
//
// String message = prefixe+","+idSelf + "," + pseudoSelf;
//
//
// this.client.sendMessageUDP_broadcast(message, this.portServer);
//
// }
// public synchronized void createSenderUDP(int port, Mode mode) throws SocketException {
// new SenderUDP(mode, port).start();
// }
}

57
POO_Server/src/communication/TCPClient.java
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@ -1,57 +0,0 @@
package communication;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import main.Observer;
//import main.VueSession;
import messages.MessageTexte;
import messages.MauvaisTypeMessageException;
import messages.Message;
import messages.Message.TypeMessage;
public class TCPClient {
private Socket sockTCP;
private ObjectOutputStream output;
private TCPInputThread inputThread;
//Constructor from a TCP-client socket
public TCPClient(Socket sockTCP) throws IOException {
this.sockTCP = sockTCP;
this.output = new ObjectOutputStream(sockTCP.getOutputStream()) ;
ObjectInputStream input = new ObjectInputStream(sockTCP.getInputStream());
this.inputThread = new TCPInputThread(input);
}
//Constructor from an IP address and a port
public TCPClient(InetAddress addr, int port) throws IOException {
this(new Socket(addr, port)) ;
}
public void startInputThread() {
this.inputThread.start();
}
public void sendMessage(String contenu) throws IOException, MauvaisTypeMessageException {
System.out.println("dans write");
MessageTexte message = new MessageTexte(TypeMessage.TEXTE, contenu);
this.output.writeObject(message);
}
public void setObserverInputThread(Observer o) {
this.inputThread.setObserver(o);
}
}

65
POO_Server/src/communication/TCPInputThread.java
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@ -1,65 +0,0 @@
package communication;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.util.Arrays;
import main.Observer;
import messages.Message;
public class TCPInputThread extends Thread {
private ObjectInputStream input;
private boolean running;
private char[] buffer;
private Observer obs;
public TCPInputThread(ObjectInputStream input) {
this.input = input;
this.running = true;
this.buffer = new char[200];
}
@Override
public void run() {
while (this.running) {
try {
System.out.println("dans read");
Object o = this.input.readObject();
this.obs.update(this, o);
} catch (IOException | ClassNotFoundException e) {
this.interrupt();
//e.printStackTrace();
}
}
}
@Override
public void interrupt() {
try {
this.running = false;
this.input.close();
//this.obs.update(this, this.input);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void flushBuffer() {
Arrays.fill(this.buffer, '\u0000');
}
protected void setObserver(Observer o) {
this.obs = o;
}
}

40
POO_Server/src/communication/TCPServer.java
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@ -1,40 +0,0 @@
package communication;
import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import main.Observer;
public class TCPServer extends Thread {
private ServerSocket sockListenTCP;
private Observer obs;
public TCPServer(int port) throws UnknownHostException, IOException {
this.sockListenTCP = new ServerSocket(port, 5, InetAddress.getLocalHost());
}
@Override
public void run() {
System.out.println("TCP running");
Socket sockAccept;
while(true) {
try {
sockAccept = this.sockListenTCP.accept();
this.obs.update(this, sockAccept);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void addObserver(Observer obs) {
this.obs = obs;
}
}

73
POO_Server/src/database/SQLiteCreateTables.java Normal file
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@ -0,0 +1,73 @@
package database;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
class SQLiteCreateTables {
protected static void createTableUser(Connection connec) throws SQLException {
String createTableUser = "CREATE TABLE IF NOT EXISTS user (\r\n"
+ " id INTEGER PRIMARY KEY AUTOINCREMENT,\r\n"
+ " username VARCHAR (50) NOT NULL\r\n"
+ " UNIQUE ON CONFLICT ROLLBACK,\r\n"
+ " pwd_salt BLOB,\r\n"
+ " db_datakey_salt BLOB,\r\n"
+ " encrypted_pwd_hashsalt BLOB,\r\n"
+ " encrypted_db_datakey BLOB,\r\n"
+ " iv_datakey BLOB\r\n"
+ ");";
Statement stmt = connec.createStatement();
stmt.execute(createTableUser);
}
protected static void createTableConversation(Connection connec) throws SQLException {
String createTableConversation = "CREATE TABLE IF NOT EXISTS conversation (\r\n"
+ " id_conversation INTEGER PRIMARY KEY AUTOINCREMENT,\r\n"
+ " id_emetteur INTEGER REFERENCES user (id) \r\n"
+ " NOT NULL,\r\n"
+ " id_recepteur INTEGER REFERENCES user (id) \r\n"
+ " NOT NULL,\r\n"
+" iv_conversation BLOB NOT NULL"
+ ");";
Statement stmt = connec.createStatement();
stmt.execute(createTableConversation);
}
protected static void createTableMessage(Connection connec) throws SQLException {
String createTableMessage = "CREATE TABLE IF NOT EXISTS message (\r\n"
+ " id_message INTEGER PRIMARY KEY AUTOINCREMENT,\r\n"
+ " id_conversation INTEGER REFERENCES conversation (id_conversation) \r\n"
+ " NOT NULL,\r\n"
+ " id_type INTEGER REFERENCES type (id_type) \r\n"
+ " NOT NULL,\r\n"
+ " content BLOB,\r\n"
+ " date INTEGER NOT NULL,\r\n"
+ " extension VARCHAR (20) \r\n"
+ ");\r\n";
Statement stmt = connec.createStatement();
stmt.execute(createTableMessage);
}
protected static void createTableType(Connection connec) throws SQLException {
String createTableType = "CREATE TABLE IF NOT EXISTS type (\r\n" + " id_type INTEGER PRIMARY KEY,\r\n"
+ " label VARCHAR (20) NOT NULL\r\n" + ");";
Statement stmt = connec.createStatement();
stmt.execute(createTableType);
String typeText = "INSERT OR IGNORE INTO type (id_type, label) " + "VALUES (0, 'text');";
String typeFile = "INSERT OR IGNORE INTO type (id_type, label) " + "VALUES (1, 'file');";
String typeImage = "INSERT OR IGNORE INTO type (id_type, label) " + "VALUES (2, 'image');";
stmt.execute(typeText);
stmt.execute(typeFile);
stmt.execute(typeImage);
}
}

84
POO_Server/src/database/SQLiteEncprytion.java Normal file
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@ -0,0 +1,84 @@
package database;
import java.util.Base64;
import java.util.Random;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.security.*;
import java.security.spec.*;
class SQLiteEncprytion {
private static final Random RANDOM = new SecureRandom();
private static final int ITERATIONS = 10000;
private static final int KEY_LENGTH = 256;
protected static final String encryptAlgorithm = "AES/CBC/PKCS5Padding";
protected static byte[] getNextSalt() {
byte[] salt = new byte[24];
RANDOM.nextBytes(salt);
return salt;
}
protected static byte[] hash(char[] password, byte[] salt) {
return SQLiteEncprytion.getKey(password, salt).getEncoded();
}
protected static SecretKey getKey(char[] password, byte[] salt) {
PBEKeySpec saltpwd = new PBEKeySpec(password, salt, ITERATIONS, KEY_LENGTH);
try {
SecretKeyFactory skf = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
SecretKey tmp = skf.generateSecret(saltpwd);
SecretKey key = new SecretKeySpec(tmp.getEncoded(), "AES");
return key;
} catch (InvalidKeySpecException | NoSuchAlgorithmException e) {
e.printStackTrace();
} finally {
saltpwd.clearPassword();
}
return null;
}
public static IvParameterSpec generateIv() {
byte[] iv = new byte[16];
new SecureRandom().nextBytes(iv);
return new IvParameterSpec(iv);
}
protected static byte[] encrypt(String algorithm, byte[] input, SecretKey key, IvParameterSpec iv) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException{
Cipher cipher = Cipher.getInstance(algorithm);
cipher.init(Cipher.ENCRYPT_MODE, key, iv);
byte[] cipherText = cipher.doFinal(input);
return Base64.getEncoder().encode(cipherText);
}
protected static byte[] decryptByte(String algorithm, byte[] cipherText, SecretKey key, IvParameterSpec iv) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException{
Cipher cipher = Cipher.getInstance(algorithm);
cipher.init(Cipher.DECRYPT_MODE, key, iv);
byte[] plainText = cipher.doFinal(Base64.getDecoder().decode(cipherText));
return plainText;
}
protected static String decryptString(String algorithm, byte[] cipherText, SecretKey key, IvParameterSpec iv) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
return new String(SQLiteEncprytion.decryptByte(algorithm, cipherText, key, iv) );
}
public static byte[] keyToByte(SecretKey key) {
return Base64.getEncoder().encode(key.getEncoded());
}
public static SecretKey byteToKey(byte[] encodedKey) {
byte[] decodedKey = Base64.getDecoder().decode(encodedKey);
return new SecretKeySpec(decodedKey, 0, decodedKey.length, "AES");
}
}

563
POO_Server/src/database/SQLiteManager.java Normal file
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@ -0,0 +1,563 @@
package database;
import java.io.File;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import main.Utilisateur;
import messages.MauvaisTypeMessageException;
import messages.Message;
import messages.MessageTexte;
import messages.Message.TypeMessage;
import messages.MessageFichier;
public class SQLiteManager {
private static final String DATABASE_RELATIVE_PATH = "../database";
public static String[] hardcodedNames = {"Olivia","Liam","Benjamin","Sophia","Charlotte","Noah","Elijah","Isabella",
"Oliver","Emma","William","Amelia","Evelyn","James","Mia","Ava","Lucas","Mason","Ethan","Harper"};
private Connection connec;
private int numDatabase;
private SecretKey dbDataKey;
public SQLiteManager(int numDatabase) {
this.numDatabase = numDatabase;
this.openConnection();
try {
SQLiteCreateTables.createTableUser(this.connec);
SQLiteCreateTables.createTableConversation(this.connec);
SQLiteCreateTables.createTableType(this.connec);
SQLiteCreateTables.createTableMessage(this.connec);
} catch (SQLException e) {
this.closeConnection();
File db = new File("../database"+this.numDatabase+".db");
if(db.delete()) {
System.out.println("supp");
}else {
System.out.println("no supp");
}
e.printStackTrace();
}
this.closeConnection();
}
private void openConnection() {
String url = "jdbc:sqlite:"+ DATABASE_RELATIVE_PATH + this.numDatabase + ".db";
try {
//Class.forName("org.sqlite.JDBC");
this.connec = DriverManager.getConnection(url);
System.out.println("Connection to bdd established");
} catch (SQLException /*| ClassNotFoundException*/ e) {
System.out.println(e.getMessage());
}
}
private void closeConnection() {
try {
if (this.connec != null) {
this.connec.close();
}
} catch (SQLException e) {
System.out.println(e.getMessage());
}
}
public int insertAllMessages(ArrayList<Message> messages, String usernameSender, String usernameReceiver) throws SQLException{
int nbRows = 0;
this.openConnection();
int idSender = this.getIDUser(usernameSender);
int idReceiver = this.getIDUser(usernameReceiver);
if(idSender == -1) {
this.insertUser(usernameSender);
idSender = this.getIDUser(usernameSender);
}
if(idReceiver == -1) {
this.insertUser(usernameReceiver);
idReceiver = this.getIDUser(usernameReceiver);
}
int idConversation = getIDConversation(idSender, idReceiver);
if(idConversation == -1) {
this.insertConversation(idSender, idReceiver);
idConversation = getIDConversation(idSender, idReceiver);
}
IvParameterSpec ivConversation = this.getIvConversation(idConversation);
this.connec.setAutoCommit(false);
for(Message m : messages) {
try {
nbRows += this.insertMessage(idConversation, m, ivConversation);
} catch (SQLException e) {
e.printStackTrace();
this.connec.rollback();
}
}
this.connec.commit();
this.closeConnection();
//System.out.println("Nombre de message(s) insérée(s) : " + nbRows);
return nbRows;
}
public ArrayList<Message> getHistoriquesMessages(String usernameOther, String pseudoOther) throws SQLException {
this.openConnection();
ArrayList<Message> messages = new ArrayList<Message>();
String usernameSelf = Utilisateur.getSelf().getId();
int idSelf = this.getIDUser(usernameSelf);
int idOther = this.getIDUser(usernameOther);
int idConversationSelf = this.getIDConversation(idSelf, idOther);
int idConversationOther = this.getIDConversation(idOther, idSelf);
IvParameterSpec ivConversation = this.getIvConversation(idConversationSelf);
// String str = "datetime(d1,'unixepoch','localtime')";
String getHistoriqueRequest = "SELECT id_conversation, id_type, content, date, extension "
+ "FROM message "
+ "WHERE id_conversation IN (?,?) "
+ "ORDER by date";
PreparedStatement prepStmt = this.connec.prepareStatement(getHistoriqueRequest);
prepStmt.setInt(1, idConversationSelf);
prepStmt.setInt(2, idConversationOther);
ResultSet res = prepStmt.executeQuery();
//Retrieve the messages one by one
//Create the appropriate message object depending on the type and sender/receiver
//and add the message in the list
while(res.next()) {
int idType = res.getInt("id_type");
String type = this.getType(idType);
String content = null;
try {
content = this.bytesToStringContent(res.getBytes("content"), ivConversation);
} catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException
| InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException
| SQLException e1) {
//System.out.println("erreur déchiffrement");
}
Message message = null;
String extension;
if(!type.equals("")) {
try {
switch(type) {
case "text":
message = new MessageTexte(TypeMessage.TEXTE, content);
break;
case "file":
extension = res.getString("extension");
message = new MessageFichier(TypeMessage.FICHIER, content, extension);
break;
default:
extension = res.getString("extension");
message = new MessageFichier(TypeMessage.IMAGE, content, extension);
}
} catch (MauvaisTypeMessageException e) {
e.printStackTrace();
}
}
if(res.getInt("id_conversation") == idConversationSelf) {
message.setSender("Moi");
}else{
message.setSender(pseudoOther);
}
message.setDateMessage(res.getString("date"));
if(content != null) {
messages.add(message);
}
}
this.closeConnection();
return messages;
}
private void insertUser(String username) throws SQLException {
String insertUserRequest = "INSERT INTO user (username) " + "VALUES (?);";
PreparedStatement prepStmt = this.connec.prepareStatement(insertUserRequest);
prepStmt.setString(1, username);
prepStmt.executeUpdate();
}
public int getIDUser(String username) throws SQLException {
String getIDRequest = "SELECT id " + " FROM user" + " WHERE username = ? ;";
PreparedStatement prepStmt = this.connec.prepareStatement(getIDRequest);
prepStmt.setString(1, username);
ResultSet res = prepStmt.executeQuery();
if (res.next()) {
return res.getInt("id");
}
return -1;
}
private void insertConversation(int idSender, int idReceiver) throws SQLException {
String insertConversationRequest = "INSERT INTO conversation (id_emetteur, id_recepteur, iv_conversation) " + "VALUES "
+ "(?, ?, ?),"
+ "(?, ?, ?);";
byte[] ivConversation = SQLiteEncprytion.generateIv().getIV();
PreparedStatement prepStmt = this.connec.prepareStatement(insertConversationRequest);
prepStmt.setInt(1, idSender);
prepStmt.setInt(2, idReceiver);
prepStmt.setBytes(3, ivConversation);
prepStmt.setInt(4, idReceiver);
prepStmt.setInt(5, idSender);
prepStmt.setBytes(6, ivConversation);
prepStmt.executeUpdate();
}
private int getIDConversation(int idSender, int idReceiver) throws SQLException {
String getIDRequest = "SELECT id_conversation " + "FROM conversation " + "WHERE id_emetteur = ? "
+ "AND id_recepteur = ? ;";
PreparedStatement prepStmt = this.connec.prepareStatement(getIDRequest);
prepStmt.setInt(1, idSender);
prepStmt.setInt(2, idReceiver);
ResultSet res = prepStmt.executeQuery();
if (res.next()) {
return res.getInt("id_conversation");
}
return -1;
}
private IvParameterSpec getIvConversation(int idConversation) throws SQLException {
String getIvRequest = "SELECT iv_conversation " + "FROM conversation " + "WHERE id_conversation = ?;";
PreparedStatement prepStmt = this.connec.prepareStatement(getIvRequest);
prepStmt.setInt(1, idConversation);
ResultSet res = prepStmt.executeQuery();
if (res.next()) {
return new IvParameterSpec(res.getBytes("iv_conversation"));
}
return null;
}
private int getIDType(String label) throws SQLException {
String getIDRequest = "SELECT id_type FROM type WHERE label = ?;";
PreparedStatement prepStmt = this.connec.prepareStatement(getIDRequest);
prepStmt.setString(1, label);
ResultSet res = prepStmt.executeQuery();
if (res.next()) {
return res.getInt("id_type");
}
return -1;
}
private String getType(int idType) throws SQLException {
String getTypeRequest = "SELECT label FROM type WHERE id_type = ?;";
PreparedStatement prepStmt = this.connec.prepareStatement(getTypeRequest);
prepStmt.setInt(1, idType);
ResultSet res = prepStmt.executeQuery();
if(res.next()) {
return res.getString("label");
}
return "";
}
private byte[] stringToBytesContent(Message m, IvParameterSpec iv) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
String content;
if (m.getTypeMessage() == TypeMessage.TEXTE) {
MessageTexte messageTxt = (MessageTexte) m;
content = messageTxt.getContenu();
}else {
MessageFichier messageFichier = (MessageFichier) m;
content = messageFichier.getContenu();
}
byte[] encryptedContent = SQLiteEncprytion.encrypt(SQLiteEncprytion.encryptAlgorithm, content.getBytes(), this.dbDataKey, iv);
return encryptedContent;
}
private String bytesToStringContent(byte[] encryptedContent, IvParameterSpec iv) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
return SQLiteEncprytion.decryptString(SQLiteEncprytion.encryptAlgorithm, encryptedContent, this.dbDataKey, iv);
}
private String processMessageType(Message m) {
switch (m.getTypeMessage()) {
case TEXTE: return "text";
case FICHIER: return "file";
case IMAGE: return "image";
default: return "";
}
}
private String processExtension(Message m) {
if(m.getTypeMessage() == TypeMessage.TEXTE) {
return null;
}else {
MessageFichier mFile = (MessageFichier) m;
return mFile.getExtension();
}
}
private int insertMessage(int idConversation, Message m, IvParameterSpec iv) throws SQLException {
String dateMessage = m.getDateMessage();
String extension = this.processExtension(m);
String type = this.processMessageType(m);
int idType = this.getIDType(type);
byte[] content = null;
try {
content = this.stringToBytesContent(m, iv);
} catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException
| InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
e.printStackTrace();
}
String insertMessageRequest = "INSERT INTO message(id_conversation, id_type, content, date, extension) "
+ "VALUES (?, ?, ?, ?, ?);";
PreparedStatement prepStmt = this.connec.prepareStatement(insertMessageRequest);
prepStmt.setInt(1, idConversation);
prepStmt.setInt(2, idType);
prepStmt.setBytes(3, content);
prepStmt.setString(4, dateMessage);
prepStmt.setString(5, extension);
int nbRows = prepStmt.executeUpdate();
return nbRows;
}
public void createNewUserEncrypt(String username, String password) {
String algo = SQLiteEncprytion.encryptAlgorithm;
KeyGenerator keyGen = null;
try {
keyGen = KeyGenerator.getInstance("AES");
keyGen.init(256);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
byte[] passwordSalt = SQLiteEncprytion.getNextSalt();
byte[] dbDataKeySalt = SQLiteEncprytion.getNextSalt();
SecretKey dbDataKey = keyGen.generateKey();
SecretKey dbDataEncryptKey = SQLiteEncprytion.getKey(password.toCharArray(), dbDataKeySalt);
IvParameterSpec ivDbDataKey = SQLiteEncprytion.generateIv();
byte[] passwordHash = SQLiteEncprytion.hash(password.toCharArray(), passwordSalt);
byte[] dbDataKeyEncrypted = null;
byte[] encryptedPasswordHash = null;
try {
dbDataKeyEncrypted = SQLiteEncprytion.encrypt(
algo, SQLiteEncprytion.keyToByte(dbDataKey), dbDataEncryptKey, ivDbDataKey);
encryptedPasswordHash = SQLiteEncprytion.encrypt(
algo, passwordHash , dbDataKey, ivDbDataKey);
} catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException
| InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
this.openConnection();
String createUserRequest = "INSERT INTO user(username, pwd_salt, db_datakey_salt, encrypted_pwd_hashsalt, encrypted_db_datakey, iv_datakey) "
+ "VALUES (?, ?, ?, ?, ?, ?); ";
PreparedStatement prepStmt = null;
try {
prepStmt = this.connec.prepareStatement(createUserRequest);
prepStmt.setString(1, username);
prepStmt.setBytes(2, passwordSalt);
prepStmt.setBytes(3, dbDataKeySalt);
prepStmt.setBytes(4, encryptedPasswordHash);
prepStmt.setBytes(5, dbDataKeyEncrypted);
prepStmt.setBytes(6, ivDbDataKey.getIV());
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
prepStmt.executeUpdate();
System.out.println("Utilisateur crée");
} catch (SQLException e) {
System.out.println("Nom d'utilisateur déjà pris");
}
this.closeConnection();
}
/**
*
* @param username
* @param password
* @return -1 if user do not exists,
* 0 if password incorrect,
* 1 if password correct
* @throws SQLException
*/
public int checkPwd(String username, char[] password) throws SQLException {
this.openConnection();
String selectUserDataRequest = "SELECT pwd_salt, db_datakey_salt, encrypted_pwd_hashsalt, encrypted_db_datakey, iv_datakey "
+ "FROM user "
+ "WHERE username = ?;";
PreparedStatement prepStmt;
prepStmt = this.connec.prepareStatement(selectUserDataRequest);
prepStmt.setString(1, username);
ResultSet res = prepStmt.executeQuery();
if(!res.next()) {
return -1;
}
byte[] passwordSalt = res.getBytes("pwd_salt");
byte[] dbDataKeySalt = res.getBytes("db_datakey_salt");
SecretKey dbDataEncryptKey = SQLiteEncprytion.getKey(password, dbDataKeySalt);
IvParameterSpec iv = new IvParameterSpec(res.getBytes("iv_datakey"));
byte[] encryptedDbDataKey = res.getBytes("encrypted_db_datakey");
SecretKey dbDataKey = null;
try {
dbDataKey = SQLiteEncprytion.byteToKey(
SQLiteEncprytion.decryptByte(SQLiteEncprytion.encryptAlgorithm, encryptedDbDataKey, dbDataEncryptKey, iv)
);
} catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException
| InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
//System.out.println("Problème déchiffrement clé db");
}
this.dbDataKey = dbDataKey;
byte[] encryptedPasswordHash = res.getBytes("encrypted_pwd_hashsalt");
byte[] passwordHash = SQLiteEncprytion.hash(password, passwordSalt);
this.closeConnection();
boolean checkHash = this.checkHashPwd(passwordHash ,encryptedPasswordHash, dbDataKey, iv);
if(checkHash) {
return 1;
}
return 0;
}
private boolean checkHashPwd(byte[] passwordHash, byte[] encryptedPasswordHash, SecretKey dbDataKey, IvParameterSpec iv) {
byte[] expectedHash = "".getBytes();
try {
expectedHash = SQLiteEncprytion.decryptByte(SQLiteEncprytion.encryptAlgorithm, encryptedPasswordHash, dbDataKey, iv);
} catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException
| InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
}
if (passwordHash.length != expectedHash.length) return false;
for (int i = 0; i < passwordHash.length; i++) {
if (passwordHash[i] != expectedHash[i]) return false;
}
return true;
}
public static void main(String[] args) {
String[] hardcodedNames = {"Olivia","Liam","Benjamin","Sophia","Charlotte","Noah","Elijah","Isabella",
"Oliver","Emma","William","Amelia","Evelyn","James","Mia","Ava","Lucas","Mason","Ethan","Harper"};
String pwdPrefix = "aze1$";
SQLiteManager sqlManager = new SQLiteManager(0);
for(int i=0; i<hardcodedNames.length; i++) {
sqlManager.createNewUserEncrypt(hardcodedNames[i]+i, pwdPrefix+hardcodedNames[i].charAt(0)+i);
}
}
}

34
POO_Server/src/main/ServletPresence.java
View file

@ -4,6 +4,7 @@ import java.io.IOException;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.sql.SQLException;
import java.util.ArrayList;
import javax.servlet.ServletException;
@ -13,6 +14,7 @@ import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import communication.CommunicationUDP;
import database.SQLiteManager;
import messages.*;
import messages.Message.TypeMessage;
@ -28,6 +30,7 @@ public class ServletPresence extends HttpServlet implements Observer {
private CommunicationUDP comUDP;
private ArrayList<Utilisateur> remoteUsers;
private SQLiteManager sqlManager;
public ServletPresence() {
//A changer en passant aux IP
@ -44,6 +47,8 @@ public class ServletPresence extends HttpServlet implements Observer {
} catch (UnknownHostException e) {
e.printStackTrace();
}
sqlManager = new SQLiteManager(0);
}
private int getIndexByID(String id) {
@ -133,6 +138,19 @@ public class ServletPresence extends HttpServlet implements Observer {
out.println( "</HTML>" );
}
//Affiche un message d'erreur en cas de requête invalide
private void printErrorUnkwownUser(PrintWriter out) {
out.println( "<HTML>" );
out.println( "<HEAD>");
out.println( "<TITLE>Erreur Utilisateur Inconnu</TITLE>" );
out.println( "</HEAD>" );
out.println( "<BODY>" );
out.println( "<H1>Erreur : l'id que vous avez entrée n'est pas enregistrée</H1>" );
out.println( "<H2>Veuillez vérifier votre syntaxe et réessayer</H2>" );
out.println( "</BODY>" );
out.println( "</HTML>" );
}
//Informe de la modification de la liste tous les utilisateurs internes et externes
private void snotify(MessageSysteme message, Utilisateur user) {
@ -164,8 +182,14 @@ public class ServletPresence extends HttpServlet implements Observer {
response.setContentType( "text/html" );
PrintWriter out = response.getWriter();
//Si le pseudo est déjà pris : génère du html pour en informer l'utilisateur
if (comUDP.containsUserFromPseudo(pseudo)||remoteContainsUserFromPseudo(pseudo)) {
//Si l'id n'existe pas dans la BDD : génère du html pour en informer l'utilisateur
try {
if (sqlManager.getIDUser(id)==-1) {
printErrorUnkwownUser(out);
}
//Si le pseudo est déjà pris : idem
else if (comUDP.containsUserFromPseudo(pseudo)||remoteContainsUserFromPseudo(pseudo)) {
printErrorUsedPseudo(out);
}
@ -181,6 +205,10 @@ public class ServletPresence extends HttpServlet implements Observer {
}
printActiveUsersOnly(out);
}
} catch (UnknownHostException | SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
out.close();
}
@ -190,7 +218,7 @@ public class ServletPresence extends HttpServlet implements Observer {
Utilisateur user = remoteUsers.get(index);
remoteUsers.remove(index);
try {
snotify(new MessageSysteme(Message.TypeMessage.JE_SUIS_DECONNECTE, id), user);
snotify(new MessageSysteme(Message.TypeMessage.JE_SUIS_DECONNECTE,"", id, -1), user);
} catch (MauvaisTypeMessageException e) {
// TODO Auto-generated catch block
e.printStackTrace();

45
POO_Server/src/messages/Message.java
View file

@ -1,22 +1,47 @@
package messages;
import java.io.Serializable;
import java.lang.instrument.Instrumentation;
import java.util.Arrays;
import messages.Message.TypeMessage;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public abstract class Message implements Serializable {
public enum TypeMessage {JE_SUIS_CONNECTE, JE_SUIS_DECONNECTE, INFO_PSEUDO, TEXTE, IMAGE, FICHIER, MESSAGE_NUL}
public enum TypeMessage {JE_SUIS_CONNECTE, JE_SUIS_DECONNECTE, INFO_PSEUDO, TEXTE, IMAGE, FICHIER, MESSAGE_NUL, FICHIER_INIT, FICHIER_ANSWER}
protected TypeMessage type;
private String dateMessage;
private String sender;
private static final long serialVersionUID = 1L;
private static Instrumentation inst;
public static String getDateAndTime() {
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
LocalDateTime now = LocalDateTime.now();
return dtf.format(now);
}
public TypeMessage getTypeMessage() {
return this.type;
}
public void setDateMessage(String dateMessage) {
this.dateMessage = dateMessage;
}
public String getDateMessage() {
return this.dateMessage;
}
public String getSender() {
return this.sender ;
}
public void setSender(String sender) {
this.sender = sender;
}
protected abstract String attributsToString();
public String toString() {
@ -28,10 +53,10 @@ public abstract class Message implements Serializable {
String[] parts = messageString.split("###");
switch (parts[0]) {
case "JE_SUIS_CONNECTE" :
return new MessageSysteme(TypeMessage.JE_SUIS_CONNECTE, parts[2]);
return new MessageSysteme(TypeMessage.JE_SUIS_CONNECTE);
case "JE_SUIS_DECONNECTE" :
return new MessageSysteme(TypeMessage.JE_SUIS_DECONNECTE, parts[2]);
return new MessageSysteme(TypeMessage.JE_SUIS_DECONNECTE, parts[1], parts[2], Integer.parseInt(parts[3]) );
case "INFO_PSEUDO" :
return new MessageSysteme(TypeMessage.INFO_PSEUDO, parts[1], parts[2], Integer.parseInt(parts[3]) );
@ -51,8 +76,8 @@ public abstract class Message implements Serializable {
//tests ici
public static void main(String[] args) throws MauvaisTypeMessageException {
Message m1 = new MessageSysteme(TypeMessage.JE_SUIS_CONNECTE, "sahiu");
Message m2 = new MessageSysteme(TypeMessage.JE_SUIS_DECONNECTE, "putbezfjk");
Message m1 = new MessageSysteme(TypeMessage.JE_SUIS_CONNECTE);
Message m2 = new MessageSysteme(TypeMessage.JE_SUIS_DECONNECTE,"aker", "man", 5000);
Message m3 = new MessageSysteme(TypeMessage.INFO_PSEUDO, "pseudo156434518", "id236", 1500);
Message m4 = new MessageTexte(TypeMessage.TEXTE, "blablabla");
Message m5 = new MessageFichier(TypeMessage.FICHIER, "truc", ".pdf");

19
POO_Server/src/messages/MessageFichier.java
View file

@ -1,7 +1,5 @@
package messages;
import messages.Message.TypeMessage;
public class MessageFichier extends Message {
@ -10,10 +8,11 @@ public class MessageFichier extends Message {
private String extension;
public MessageFichier(TypeMessage type, String contenu, String extension) throws MauvaisTypeMessageException{
if ((type==TypeMessage.IMAGE)||(type==TypeMessage.FICHIER)) {
if ((type==TypeMessage.IMAGE)||(type==TypeMessage.FICHIER) ||(type==TypeMessage.FICHIER_INIT) || (type==TypeMessage.FICHIER_ANSWER) ) {
this.type=type;
this.contenu=contenu;
this.extension=extension;
this.setDateMessage(Message.getDateAndTime());
}
else throw new MauvaisTypeMessageException();
}
@ -30,4 +29,18 @@ public class MessageFichier extends Message {
protected String attributsToString() {
return this.contenu+"###"+this.extension;
}
public String toString() {
if(this.type == TypeMessage.IMAGE) {
return this.contenu;
}else {
String suffixe;
if(this.getSender().equals("Moi")) {
suffixe = "envoyé\n";
}else {
suffixe = "reçu\n";
}
return "<"+this.getDateMessage()+"> : "+this.contenu+" "+suffixe;
}
}
}

9
POO_Server/src/messages/MessageSysteme.java
View file

@ -7,18 +7,18 @@ public class MessageSysteme extends Message {
private String id;
private int port;
public MessageSysteme(TypeMessage type, String id) throws MauvaisTypeMessageException{
if ((type==TypeMessage.JE_SUIS_CONNECTE)||(type==TypeMessage.JE_SUIS_DECONNECTE)||(type==TypeMessage.MESSAGE_NUL)) {
public MessageSysteme(TypeMessage type) throws MauvaisTypeMessageException{
if ((type==TypeMessage.JE_SUIS_CONNECTE)||(type==TypeMessage.MESSAGE_NUL)) {
this.type=type;
this.pseudo="";
this.id=id;
this.id="";
this.port = -1;
}
else throw new MauvaisTypeMessageException();
}
public MessageSysteme(TypeMessage type, String pseudo, String id, int port) throws MauvaisTypeMessageException {
if (type==TypeMessage.INFO_PSEUDO) {
if (type==TypeMessage.INFO_PSEUDO ||(type==TypeMessage.JE_SUIS_DECONNECTE)) {
this.type=type;
this.pseudo=pseudo;
this.id=id;
@ -27,6 +27,7 @@ public class MessageSysteme extends Message {
else throw new MauvaisTypeMessageException();
}
public String getPseudo() {
return this.pseudo;
}

10
POO_Server/src/messages/MessageTexte.java
View file

@ -1,17 +1,17 @@
package messages;
import messages.Message.TypeMessage;
public class MessageTexte extends Message {
private static final long serialVersionUID = 1L;
private String contenu;
public MessageTexte(TypeMessage type, String contenu) throws MauvaisTypeMessageException{
if (type==TypeMessage.TEXTE) {
this.type=type;
this.contenu=contenu;
this.setDateMessage(Message.getDateAndTime());
}
else throw new MauvaisTypeMessageException();
}
@ -20,8 +20,14 @@ public class MessageTexte extends Message {
return this.contenu;
}
@Override
protected String attributsToString() {
return this.contenu;
}
@Override
public String toString() {
return "<"+this.getDateMessage()+"> "+this.getSender()+" : "+this.contenu+"\n";
}
}

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