packages database,session cleaned and commented + minor revision communication

This commit is contained in:
Cavailles Kevin 2021-02-08 12:41:38 +01:00
parent 15a618ec50
commit dce7df5494
12 changed files with 991 additions and 554 deletions

View file

@ -74,7 +74,7 @@ public class TCPClient {
}
/**
* Method used when the session is over. Set all attribute references to null,
* Method used when the session is over. Set all attributes' references to null,
* interrupt the inputThread and close the streams and the socket.
*/
public void destroyAll() {

View file

@ -20,7 +20,7 @@ public class CommunicationUDP extends Thread {
private ObserverUserList obsList;
/**
* Create the class that will manage the userlist and contain a UDPClient and a
* Create the object that will manage the userlist and contain a UDPClient and a
* UDPServer. Since the applications will run on localhost, it needs to know
* every UDPServer ports used in order to replicate a broadcast behaviour.
*
@ -63,7 +63,7 @@ public class CommunicationUDP extends Thread {
this.obsList = o;
}
// -------------- USER LIST UPDATE FUNCTION --------------//
// -------------- USER LIST UPDATE METHODS -------------- //
/**
* Add a new user to the userlist and notify the observer.
@ -122,13 +122,13 @@ public class CommunicationUDP extends Thread {
this.users.clear();
}
// -------------- CHECKERS --------------//
// -------------- CHECKERS -------------- //
/**
* Check if there is an user in the list that has the given id.
*
* @param id The user's id.
* @return true if the user is in the list
* @return True if the user is in the list
* false otherwise.
*/
protected boolean containsUserFromID(String id) {
@ -144,7 +144,7 @@ public class CommunicationUDP extends Thread {
* Check if there is an user in the list that has the given pseudo.
*
* @param pseudo The user's pseudo.
* @return true if the user is in the list
* @return True if the user is in the list
* false otherwise.
*/
public boolean containsUserFromPseudo(String pseudo) {
@ -157,7 +157,7 @@ public class CommunicationUDP extends Thread {
return false;
}
// -------------- GETTERS --------------//
// -------------- GETTERS -------------- //
/**
* Return the user with the given pseudo if it exists in the list.
@ -191,7 +191,7 @@ public class CommunicationUDP extends Thread {
return -1;
}
// -------------- SEND MESSAGES --------------//
// -------------- SEND MESSAGES METHODS -------------- //
/**
* Send a message indicating this application's user is connected to every
@ -280,6 +280,9 @@ public class CommunicationUDP extends Thread {
}
}
// -------------- OTHERS -------------- //
/**
* Notify the observer with the updated list
*/

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@ -14,7 +14,7 @@ class UDPClient {
private DatagramSocket sockUDP;
/**
* Create a UDP client on the specified port. It will be used to notify the
* Create an UDP client on the specified port. It will be used to notify the
* other users of this application's user state (Connected/Disconnected/Pseudo
* changed).
*

View file

@ -17,7 +17,7 @@ class UDPServer extends Thread {
/**
* Create a UDP Server on the specified port. It will be used to read the
* Create an UDP Server on the specified port. It will be used to read the
* other users states (Connected/Disconnected/Pseudo).
*
* @param port

View file

@ -6,7 +6,19 @@ import java.sql.Statement;
class SQLiteCreateTables {
/**
* Create the user table if it does not exist in the database.
* An user is characterized by :
* - an unique username,
* - a password salt,
* - a database_key salt,
* - a password hash encrypted by the database_key,
* - the encrypted database_key,
* - the initialization vector used to encrypt the database key.
*
* @param connec The opened connection to the database.
* @throws SQLException
*/
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"
@ -16,29 +28,49 @@ class SQLiteCreateTables {
+ " db_datakey_salt BLOB,\r\n"
+ " encrypted_pwd_hashsalt BLOB,\r\n"
+ " encrypted_db_datakey BLOB,\r\n"
+ " iv_datakey BLOB\r\n"
+ ");";
+ " iv_datakey BLOB\r\n" + ");";
Statement stmt = connec.createStatement();
stmt.execute(createTableUser);
}
/**
* Create the conversation table if it does not exist in the database.
* A conversation is characterized by :
* - the id of the user who sends the messages,
* - the id of the user who receives the messages,
* - an initialization vector used to encrypt the conversation's messages.
*
* During an session between two users, two conversations are created.
*
* @param connec The opened connection to the database.
* @throws SQLException
*/
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"
+ ");";
+ " id_sender INTEGER REFERENCES user (id) \r\n" + " NOT NULL,\r\n"
+ " id_receiver INTEGER REFERENCES user (id) \r\n" + " NOT NULL,\r\n"
+ " iv_conversation BLOB NOT NULL" + ");";
Statement stmt = connec.createStatement();
stmt.execute(createTableConversation);
}
/**
* Create the message table if it does not exist in the database.
* A message is characterized by :
* - the id of the conversation it belongs,
* - the id of its type,
* - its content,
* - the date when it was emitted,
* - its extension if it is a file (text or image).
*
* @param connec The opened connection to the database.
* @throws SQLException
*/
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"
@ -48,15 +80,27 @@ class SQLiteCreateTables {
+ " NOT NULL,\r\n"
+ " content BLOB,\r\n"
+ " date INTEGER NOT NULL,\r\n"
+ " extension VARCHAR (20) \r\n"
+ ");\r\n";
+ " extension VARCHAR (20) \r\n" + ");\r\n";
Statement stmt = connec.createStatement();
stmt.execute(createTableMessage);
}
/**
* Create the (message) type table if it does not exist and insert the different
* types of message in the database.
* A type is characterized by :
* - a label.
*
* This table only exists because the type "enumeration" does not exist in SQLite.
* It is a static table that contains the different types of message stored in the database.
*
* @param connec The opened connection to the database.
* @throws SQLException
*/
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"
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();

View file

@ -1,84 +0,0 @@
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");
}
}

View file

@ -0,0 +1,158 @@
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 SQLiteEncryption {
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";
/**
* Return a 24 bytes salt.
*
* @return The salt in a byte array.
*/
protected static byte[] getNextSalt() {
byte[] salt = new byte[24];
RANDOM.nextBytes(salt);
return salt;
}
/**
* Return the hash of the given password with the given salt.
*
* @param password
* @param salt
* @return The hash in a byte array.
*/
protected static byte[] hash(char[] password, byte[] salt) {
return SQLiteEncryption.getKey(password, salt).getEncoded();
}
/**
* Return a secret key generated with the given password and salt.
*
* @param password
* @param salt
* @return The secret key.
*/
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;
}
/**
* Return a 16 bytes Initialization vector.
*
* @return The Initialization vector.
*/
protected static IvParameterSpec generateIv() {
byte[] iv = new byte[16];
RANDOM.nextBytes(iv);
return new IvParameterSpec(iv);
}
/**
* Encrypt the given input (byte array) with the given algorithm, secretKey and
* initialization vector.
*
*
* @param algorithm
* @param input
* @param key
* @param iv
* @return The encrypted input in a byte array.
*
* @throws NoSuchAlgorithmException
* @throws NoSuchPaddingException
* @throws InvalidKeyException
* @throws InvalidAlgorithmParameterException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
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);
}
/**
* Decrypt the given input (byte array) with the given algorithm, secretKey and
* initialization vector.
*
* @param algorithm
* @param input
* @param key
* @param iv
* @return The decrypted input in a byte array.
*
* @throws NoSuchAlgorithmException
* @throws NoSuchPaddingException
* @throws InvalidKeyException
* @throws InvalidAlgorithmParameterException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
protected static byte[] decryptByte(String algorithm, byte[] input, 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(input));
return plainText;
}
/**
* Decrypt the given input (byte array) with the given algorithm, secretKey and
* initialization vector.
*
* @param algorithm
* @param input
* @param key
* @param iv
* @return The decrypted input as a String.
*
* @throws InvalidKeyException
* @throws NoSuchAlgorithmException
* @throws NoSuchPaddingException
* @throws InvalidAlgorithmParameterException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
protected static String decryptString(String algorithm, byte[] input, SecretKey key, IvParameterSpec iv)
throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException,
InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
return new String(SQLiteEncryption.decryptByte(algorithm, input, key, iv));
}
protected static byte[] keyToByte(SecretKey key) {
return Base64.getEncoder().encode(key.getEncoded());
}
protected static SecretKey byteToKey(byte[] encodedKey) {
byte[] decodedKey = Base64.getDecoder().decode(encodedKey);
return new SecretKeySpec(decodedKey, 0, decodedKey.length, "AES");
}
}

View file

@ -1,6 +1,5 @@
package database;
import java.io.File;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
@ -19,7 +18,6 @@ import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import main.Utilisateur;
import messages.MauvaisTypeMessageException;
import messages.Message;
@ -31,13 +29,24 @@ 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"};
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;
/**
* Create the object that will interact with the database. Each time a
* SQLiteManager is created, it creates the tables for the application to work
* if they do not exist already. In the context of a local usage of the
* application, this constructor takes a number that is used to manage different
* database's files (see openConnection() ).
*
* @param numDatabase
*/
public SQLiteManager(int numDatabase) {
this.numDatabase = numDatabase;
@ -52,28 +61,31 @@ public class SQLiteManager {
} 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();
}
// -------------- CONNECTION METHODS -------------- //
/**
* Open a connection to the file DATABASE_RELATIVE_PATH+this.numDatabase+".db"
*/
private void openConnection() {
String url = "jdbc:sqlite:"+ DATABASE_RELATIVE_PATH + this.numDatabase + ".db";
String url = "jdbc:sqlite:" + DATABASE_RELATIVE_PATH + this.numDatabase + ".db";
try {
this.connec = DriverManager.getConnection(url);
// System.out.println("Connection to bdd established");
} catch (SQLException e) {
System.out.println(e.getMessage());
}
}
/**
* Close this object connection, if it exists
*/
private void closeConnection() {
try {
if (this.connec != null) {
@ -85,35 +97,51 @@ public class SQLiteManager {
}
public int insertAllMessages(ArrayList<Message> messages, String usernameSender, String usernameReceiver) throws SQLException{
// -------------- INSERT METHODS -------------- //
/**
* Insert a collection of message in the database. They all correspond to the
* conversation between the sender and the receiver. The users and conversations
* are inserted in the database if they do not exist when this method is called.
*
* @param messages
* @param usernameSender
* @param usernameReceiver
* @return The number of messages inserted
* @throws SQLException
*/
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) {
if (idSender == -1) {
this.insertUser(usernameSender);
idSender = this.getIDUser(usernameSender);
}
if(idReceiver == -1) {
if (idReceiver == -1) {
this.insertUser(usernameReceiver);
idReceiver = this.getIDUser(usernameReceiver);
}
int idConversation = getIDConversation(idSender, idReceiver);
if(idConversation == -1) {
if (idConversation == -1) {
this.insertConversation(idSender, idReceiver);
idConversation = getIDConversation(idSender, idReceiver);
}
IvParameterSpec ivConversation = this.getIvConversation(idConversation);
// Disable autocommit to efficiently insert all the messages.
this.connec.setAutoCommit(false);
for(Message m : messages) {
for (Message m : messages) {
try {
nbRows += this.insertMessage(idConversation, m, ivConversation);
} catch (SQLException e) {
@ -122,250 +150,28 @@ public class SQLiteManager {
}
}
// Commit once all the messages are inserted
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();
}
private 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();
}
}
/**
* Insert a message corresponding to a given conversation (respresented by its
* id). The message content is first encrypted with the database key and the
* given iv.
*
* @param idConversation
* @param m
* @param iv
* @return The number of rows inserted (it should be 1).
* @throws SQLException
*/
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);
@ -396,10 +202,377 @@ public class SQLiteManager {
return nbRows;
}
/**
* Insert an user in the database with only its username.
*
* @param username
* @throws SQLException
*/
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();
}
/**
* Insert the two conversations corresponding to a session between two users
* (they both can be sender and receiver).
*
* @param idUser1
* @param idUser2
* @throws SQLException
*/
private void insertConversation(int idUser1, int idUser2) throws SQLException {
String insertConversationRequest = "INSERT INTO conversation (id_sender, id_receiver, iv_conversation) "
+ "VALUES " + "(?, ?, ?)," + "(?, ?, ?);";
byte[] ivConversation = SQLiteEncryption.generateIv().getIV();
PreparedStatement prepStmt = this.connec.prepareStatement(insertConversationRequest);
prepStmt.setInt(1, idUser1);
prepStmt.setInt(2, idUser2);
prepStmt.setBytes(3, ivConversation);
prepStmt.setInt(4, idUser2);
prepStmt.setInt(5, idUser1);
prepStmt.setBytes(6, ivConversation);
prepStmt.executeUpdate();
}
// -------------- GET METHODS -------------- //
/**
* Get the message record between two users. In context, it only needs the
* username and the id of the other user since we can get this application's
* user's data with Utilisateur.getSelf().
*
* @param usernameOther
* @param pseudoOther
* @return the messages previously exchanged in chronological order or null if
* there is none.
* @throws SQLException
*/
public ArrayList<Message> getMessageRecord(String usernameOther, String pseudoOther) throws SQLException {
this.openConnection();
ArrayList<Message> messages = new ArrayList<Message>();
String usernameSelf = Utilisateur.getSelf().getId();
// Get the ids from the usernames
int idSelf = this.getIDUser(usernameSelf);
int idOther = this.getIDUser(usernameOther);
// Get the two conversations corresponding to the exchanges between the two
// users
int idConversationSelf = this.getIDConversation(idSelf, idOther);
int idConversationOther = this.getIDConversation(idOther, idSelf);
IvParameterSpec ivConversation = this.getIvConversation(idConversationSelf);
// Get all the messages
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();
// Process 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 {
// Decrypt the message's content with the database key and the conversation's
// iv.
content = this.bytesToStringContent(res.getBytes("content"), ivConversation);
} catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException
| InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException
| SQLException e1) {
}
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;
}
/**
* Return the id of the user with the given username if it exists in the
* database.
*
* @param username
* @return The id of the user or -1 if he does not exist in the database.
* @throws SQLException
*/
private 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;
}
/**
* Get the id of the conversation between two users (represented by their ids).
*
* @param idSender
* @param idReceiver
* @return The id of the conversation or -1 if the conversation does not exists
* in the database.
* @throws SQLException
*/
private int getIDConversation(int idSender, int idReceiver) throws SQLException {
String getIDRequest = "SELECT id_conversation " + "FROM conversation " + "WHERE id_sender = ? "
+ "AND id_receiver = ? ;";
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;
}
/**
* Get the initialization vector for a given conversation (represented by its
* id).
*
* @param idConversation
* @return The iv corresponding to the conversation or null if the conversation
* does not exist in the database.
* @throws SQLException
*/
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;
}
/**
* Get the id of the message type corresponding to the given label.
*
* @param label
* @return The id of the message type or -1 if it does not exist in the
* database.
* @throws SQLException
*/
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;
}
/**
* Get the label of the message type corresponding to the given id.
*
* @param idType
* @return The label of the message type or "" if it does not exist in the
* database.
* @throws SQLException
*/
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 "";
}
// -------------- PROCESSING MESSAGE METHODS -------------- //
/**
* Convert a message in bytes. First get the content of the message. Then
* encrypt it with the database_key and the given iv (initialization vector).
*
* @param m
* @param iv
* @return The bytes of the encrypted message's content.
*
* @throws InvalidKeyException
* @throws NoSuchAlgorithmException
* @throws NoSuchPaddingException
* @throws InvalidAlgorithmParameterException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
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 = SQLiteEncryption.encrypt(SQLiteEncryption.encryptAlgorithm, content.getBytes(),
this.dbDataKey, iv);
return encryptedContent;
}
/**
* Convert bytes in a String. In this context, the bytes correspond to the
* encrypted content of a message.
*
* @param encryptedContent
* @param iv
* @return The String corresponding to the decrypted bytes.
*
* @throws InvalidKeyException
* @throws NoSuchAlgorithmException
* @throws NoSuchPaddingException
* @throws InvalidAlgorithmParameterException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
private String bytesToStringContent(byte[] encryptedContent, IvParameterSpec iv)
throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException,
InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
return SQLiteEncryption.decryptString(SQLiteEncryption.encryptAlgorithm, encryptedContent, this.dbDataKey, iv);
}
/**
* Process the type of a message
*
* @param m
* @return The type of the message
*/
private String processMessageType(Message m) {
switch (m.getTypeMessage()) {
case TEXTE:
return "text";
case FICHIER:
return "file";
case IMAGE:
return "image";
default:
return "";
}
}
/**
* Process the extension of a message
*
* @param m
* @return The extension of the message. null if it is a simple text message.
*/
private String processExtension(Message m) {
if (m.getTypeMessage() == TypeMessage.TEXTE) {
return null;
} else {
MessageFichier mFile = (MessageFichier) m;
return mFile.getExtension();
}
}
// -------------- USER SECURITY RELATED METHODS -------------- //
/**
* Creates a new user in the database from a given username and password. The
* username is stored in plain text. An encrypted hash of the password is
* stored. The key used to encrypt the password's hash is itself encrypted then
* stored. Every other useful data to decrypt the key and compare the password's
* hash is stored as plaintext.
*
* Fail if a user with the given username already exists in the database.
*
* @param username
* @param password
*/
public void createNewUserEncrypt(String username, String password) {
String algo = SQLiteEncprytion.encryptAlgorithm;
String algo = SQLiteEncryption.encryptAlgorithm;
KeyGenerator keyGen = null;
try {
@ -409,28 +582,26 @@ public class SQLiteManager {
e.printStackTrace();
}
byte[] passwordSalt = SQLiteEncprytion.getNextSalt();
byte[] dbDataKeySalt = SQLiteEncprytion.getNextSalt();
byte[] passwordSalt = SQLiteEncryption.getNextSalt();
byte[] dbDataKeySalt = SQLiteEncryption.getNextSalt();
SecretKey dbDataKey = keyGen.generateKey();
SecretKey dbDataEncryptKey = SQLiteEncprytion.getKey(password.toCharArray(), dbDataKeySalt);
IvParameterSpec ivDbDataKey = SQLiteEncprytion.generateIv();
SecretKey dbDataEncryptKey = SQLiteEncryption.getKey(password.toCharArray(), dbDataKeySalt);
IvParameterSpec ivDbDataKey = SQLiteEncryption.generateIv();
byte[] passwordHash = SQLiteEncprytion.hash(password.toCharArray(), passwordSalt);
byte[] passwordHash = SQLiteEncryption.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);
dbDataKeyEncrypted = SQLiteEncryption.encrypt(algo, SQLiteEncryption.keyToByte(dbDataKey), dbDataEncryptKey,
ivDbDataKey);
encryptedPasswordHash = SQLiteEncryption.encrypt(algo, passwordHash, dbDataKey, ivDbDataKey);
} catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException
| InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
@ -450,7 +621,6 @@ public class SQLiteManager {
prepStmt.setBytes(6, ivDbDataKey.getIV());
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
@ -465,13 +635,15 @@ public class SQLiteManager {
}
/**
* Check if a given password has the same hash (= they're the same) as the one
* stored in the database for a given username.
*
* @param username
* @param password
* @return -1 if user do not exists,
* 0 if password incorrect,
* 1 if password correct
* @return -1 if user do not exists, 0 if password is incorrect, 1 if password
* is correct
* @throws SQLException
*/
public int checkPwd(String username, char[] password) throws SQLException {
@ -479,82 +651,108 @@ public class SQLiteManager {
this.openConnection();
String selectUserDataRequest = "SELECT pwd_salt, db_datakey_salt, encrypted_pwd_hashsalt, encrypted_db_datakey, iv_datakey "
+ "FROM user "
+ "WHERE username = ?;";
+ "FROM user " + "WHERE username = ?;";
PreparedStatement prepStmt;
prepStmt = this.connec.prepareStatement(selectUserDataRequest);
prepStmt.setString(1, username);
ResultSet res = prepStmt.executeQuery();
if(!res.next()) {
if (!res.next()) {
return -1;
}
byte[] passwordSalt = res.getBytes("pwd_salt");
if (passwordSalt == null) {
return 0;
}
byte[] dbDataKeySalt = res.getBytes("db_datakey_salt");
SecretKey dbDataEncryptKey = SQLiteEncprytion.getKey(password, dbDataKeySalt);
IvParameterSpec iv = new IvParameterSpec(res.getBytes("iv_datakey"));
SecretKey dbDataEncryptKey = SQLiteEncryption.getKey(password, dbDataKeySalt);
byte[] ivBytes = res.getBytes("iv_datakey");
if (ivBytes == null) {
return 0;
}
IvParameterSpec iv = new IvParameterSpec(ivBytes);
byte[] encryptedDbDataKey = res.getBytes("encrypted_db_datakey");
SecretKey dbDataKey = null;
try {
dbDataKey = SQLiteEncprytion.byteToKey(
SQLiteEncprytion.decryptByte(SQLiteEncprytion.encryptAlgorithm, encryptedDbDataKey, dbDataEncryptKey, iv)
);
dbDataKey = SQLiteEncryption.byteToKey(SQLiteEncryption.decryptByte(SQLiteEncryption.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);
byte[] passwordHash = SQLiteEncryption.hash(password, passwordSalt);
this.closeConnection();
boolean checkHash = this.checkHashPwd(passwordHash ,encryptedPasswordHash, dbDataKey, iv);
if(checkHash) {
boolean checkHash = this.checkHashPwd(passwordHash, encryptedPasswordHash, dbDataKey, iv);
if (checkHash) {
// Set the database key to be used in future encryptions if the given password is
// correct.
this.dbDataKey = dbDataKey;
return 1;
}
return 0;
}
private boolean checkHashPwd(byte[] passwordHash, byte[] encryptedPasswordHash, SecretKey dbDataKey, IvParameterSpec iv) {
/**
* Check if two given hash are the same once the second one has been decrypted
* with the given key and iv.
*
* @param passwordHash
* @param encryptedPasswordHash
* @param dbDataKey
* @param iv
* @return true if the first hash is equal to the second one once decrypted,
* false otherwise.
*
*/
private boolean checkHashPwd(byte[] passwordHash, byte[] encryptedPasswordHash, SecretKey dbDataKey,
IvParameterSpec iv) {
byte[] expectedHash = "".getBytes();
try {
expectedHash = SQLiteEncprytion.decryptByte(SQLiteEncprytion.encryptAlgorithm, encryptedPasswordHash, dbDataKey, iv);
expectedHash = SQLiteEncryption.decryptByte(SQLiteEncryption.encryptAlgorithm, encryptedPasswordHash,
dbDataKey, iv);
} catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException
| InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
}
if (passwordHash.length != expectedHash.length) return false;
if (passwordHash.length != expectedHash.length)
return false;
for (int i = 0; i < passwordHash.length; i++) {
if (passwordHash[i] != expectedHash[i]) return false;
if (passwordHash[i] != expectedHash[i])
return false;
}
return true;
}
// Main to create 20 users in the database with the given number
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[] 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(1);
SQLiteManager sqlManager = new SQLiteManager(0);
for(int i=0; i<hardcodedNames.length; i++) {
sqlManager.createNewUserEncrypt(hardcodedNames[i]+i, pwdPrefix+hardcodedNames[i].charAt(0)+i);
for (int i = 0; i < hardcodedNames.length; i++) {
sqlManager.createNewUserEncrypt(hardcodedNames[i] + i, pwdPrefix + hardcodedNames[i].charAt(0) + i);
}
}

View file

@ -39,17 +39,22 @@ public class ControleurSession implements ActionListener, ObserverInputMessage,
private SQLiteManager sqlManager;
private ArrayList<File> files;
/**
* Create the controller for this session. It will manage all the objects used
* to send/receive messages and files as well as the ones interacting with the
* database. It will handle the actions performed on the view and call the
* appropriate methods to display messages and data on the view.
*
* @param vue
* @param socketComm
* @param idOther
* @param pseudoOther
* @param sqlManager
* @param vue The corresponding view
* @param socketComm The socket used to send/receive messages
* @param idOther The other user's id
* @param pseudoOther The other user's pseudo
* @param sqlManager The SQLManager instance to retrieve/insert
* users,conversations,messages from/into the database
* @throws IOException
*/
protected ControleurSession(VueSession vue, Socket socketComm, String idOther, String pseudoOther, SQLiteManager sqlManager) throws IOException {
protected ControleurSession(VueSession vue, Socket socketComm, String idOther, String pseudoOther,
SQLiteManager sqlManager) throws IOException {
this.vue = vue;
this.tcpClient = new TCPClient(socketComm);
this.tcpClient.setObserverInputThread(this);
@ -66,18 +71,19 @@ public class ControleurSession implements ActionListener, ObserverInputMessage,
this.files = new ArrayList<File>();
}
// ---------- ACTION LISTENER OPERATIONS ----------//
// ---------- ACTION LISTENER OPERATIONS ---------- //
@Override
public void actionPerformed(ActionEvent e) {
//If the button "Envoyer" is pressed
// If the button "Envoyer" is pressed
if ((JButton) e.getSource() == this.vue.getButtonEnvoyer()) {
String messageContent = this.vue.getInputedText();
System.out.println(messageContent);
if(!this.files.isEmpty()) {
if (!this.files.isEmpty()) {
this.processSelectedFiles(messageContent);
if(!this.files.isEmpty()) {
if (!this.files.isEmpty()) {
this.askFileTransfer();
this.vue.resetZoneSaisie();
@ -85,11 +91,10 @@ public class ControleurSession implements ActionListener, ObserverInputMessage,
}
}
//If the text field is not empty
// If the text field is not empty
if (!messageContent.equals("")) {
//Retrieve the date and prepare the messages to send/display
// Retrieve the date and prepare the messages to send/display
MessageTexte messageOut = null;
try {
@ -99,7 +104,6 @@ public class ControleurSession implements ActionListener, ObserverInputMessage,
e2.printStackTrace();
}
try {
this.tcpClient.sendMessage(messageOut);
} catch (IOException e1) {
@ -114,18 +118,22 @@ public class ControleurSession implements ActionListener, ObserverInputMessage,
}
}
//If the button "Importer" is pressed
if((JButton) e.getSource() == this.vue.getButtonImportFile()) {
//Display a file chooser to select one or several files
// If the button "Importer" is pressed
if ((JButton) e.getSource() == this.vue.getButtonImportFile()) {
// Display a file chooser to select one or several files
JFileChooser fc = new JFileChooser();
fc.setMultiSelectionEnabled(true);
int returVal = fc.showDialog(this.vue, "Importer");
if(returVal == JFileChooser.APPROVE_OPTION) {
// If the user clicked on "Importer",
// Retrieve all the files he clicked on.
// The files are stored in this.files
// and their names are display in the ChatInput.
if (returVal == JFileChooser.APPROVE_OPTION) {
File[] files = fc.getSelectedFiles();
Collections.addAll(this.files, files);
for(File file : files) {
for (File file : files) {
this.vue.appendInputedText(file.getName());
this.vue.appendInputedText(";");
}
@ -136,26 +144,92 @@ public class ControleurSession implements ActionListener, ObserverInputMessage,
}
// ---------- KEY LISTENER METHODS ---------- //
@Override
public void keyTyped(KeyEvent e) {}
public void keyTyped(KeyEvent e) {
}
@Override
public void keyPressed(KeyEvent e) {
if(e.getKeyCode() == KeyEvent.VK_ENTER) {
if(!e.isShiftDown()) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
if (!e.isShiftDown()) {
this.vue.getButtonEnvoyer().doClick();
}
}
}
@Override
public void keyReleased(KeyEvent e) {}
public void keyReleased(KeyEvent e) {
}
protected ArrayList<Message> getHistorique(){
// ---------- OTHERS ---------- //
/**
* Create and send the message to ask for a file transfer.
*/
private void askFileTransfer() {
try {
ArrayList<Message> historique = this.sqlManager.getHistoriquesMessages(idOther, pseudoOther);
MessageFichier messageOut = new MessageFichier(TypeMessage.FICHIER_INIT, "" + this.files.size(), "");
this.tcpClient.sendMessage(messageOut);
} catch (MauvaisTypeMessageException | IOException e1) {
e1.printStackTrace();
}
}
/**
* Create and send the answer with the port on which the FileTransferServer is
* listening.
*
* @param port
*/
private void answerFileTransfer(int port) {
try {
MessageFichier messageOut = new MessageFichier(TypeMessage.FICHIER_ANSWER, "" + port, "");
this.tcpClient.sendMessage(messageOut);
} catch (MauvaisTypeMessageException | IOException e1) {
e1.printStackTrace();
}
}
/**
* Retrieve the files' names from the given input using ";" as a separator
* Removes the files whose names are missing.
*
* This method is used to check if a file's name has been deleted/overwritten in
* the ChatInput. Indeed, the only way to cancel the import of a file is by
* deleting its name from the ChatInput.
*
* @param input
*/
private void processSelectedFiles(String input) {
String[] tmp = input.split(";");
ArrayList<String> potentialFiles = new ArrayList<String>();
Collections.addAll(potentialFiles, tmp);
for (File file : this.files) {
if (!potentialFiles.contains(file.getName())) {
this.files.remove(file);
}
}
}
/**
* Retrieve the messages previously exchanged between the current user of the
* application and the other user of this session
*
* @return The ArrayList of all previous messages
*/
protected ArrayList<Message> getHistorique() {
try {
ArrayList<Message> historique = this.sqlManager.getMessageRecord(idOther, pseudoOther);
return historique;
} catch (SQLException e) {
e.printStackTrace();
@ -164,110 +238,11 @@ public class ControleurSession implements ActionListener, ObserverInputMessage,
}
}
private void processSelectedFiles(String input) {
String[] tmp = input.split(";");
ArrayList<String> potentialFiles = new ArrayList<String>();
Collections.addAll(potentialFiles, tmp);
for(File file: this.files) {
if(!potentialFiles.contains(file.getName()) ) {
this.files.remove(file);
}
}
}
private void askFileTransfer() {
try {
MessageFichier messageOut = new MessageFichier(TypeMessage.FICHIER_INIT, ""+this.files.size(), "");
this.tcpClient.sendMessage(messageOut);
} catch (MauvaisTypeMessageException | IOException e1) {
e1.printStackTrace();
}
}
private void answerFileTransfer(int port) {
try {
MessageFichier messageOut = new MessageFichier(TypeMessage.FICHIER_ANSWER, ""+port, "");
this.tcpClient.sendMessage(messageOut);
} catch (MauvaisTypeMessageException | IOException e1) {
e1.printStackTrace();
}
}
//Method called when a message is received from the TCP socket
@Override
public void updateInput(Object o, Object arg) {
Message message = (Message) arg;
switch(message.getTypeMessage()) {
case TEXTE:
System.out.println(message.toString());
this.vue.appendMessage(message);
this.messagesIn.add(message);
break;
case IMAGE:
this.vue.appendImage(message);
if(message.getSender().equals("Moi")) {
this.messagesOut.add(message);
}else {
this.messagesIn.add(message);
}
break;
case FICHIER:
this.vue.appendMessage(message);
if(message.getSender().equals("Moi")) {
this.messagesOut.add(message);
}else {
this.messagesIn.add(message);
}
break;
case FICHIER_INIT:
try {
MessageFichier mFichier = (MessageFichier) arg;
int nbFile = Integer.parseInt(mFichier.getContenu());
FileTransferServer fts = new FileTransferServer(nbFile, this);
int port = fts.getPort();
fts.start();
this.answerFileTransfer(port);
} catch (IOException e) {
e.printStackTrace();
}
break;
case FICHIER_ANSWER:
try {
MessageFichier mFichier = (MessageFichier) arg;
int port = Integer.parseInt(mFichier.getContenu());
@SuppressWarnings("unchecked")
FileTransferClient ftc = new FileTransferClient(port ,(ArrayList<File>) this.files.clone(), this);
ftc.sendFiles();
this.files.clear();
} catch (IOException | InterruptedException e) {
e.printStackTrace();
}
break;
//Do nothing
default:
}
}
//If the other user closes the session or the communication is broken
//Disable the view (TextArea, Buttons..) and display a message
@Override
public void updateSocketState(Object o, Object arg) {
this.vue.endSession(this.pseudoOther);
}
/**
*
* Method used when the session is over. Insert every message exchanged in the
* database, set all attributes' references to null, and call destroyAll() on
* the TCPClient.
*/
protected void destroyAll() {
String idSelf = Utilisateur.getSelf().getId();
@ -285,4 +260,93 @@ public class ControleurSession implements ActionListener, ObserverInputMessage,
this.tcpClient = null;
}
// ---------- OBSERVERS ---------- //
// Method called when a message is received from the TCP socket
@Override
public void updateInput(Object o, Object arg) {
Message message = (Message) arg;
switch (message.getTypeMessage()) {
// If it is a simple text message, display it
case TEXTE:
System.out.println(message.toString());
this.vue.appendMessage(message);
this.messagesIn.add(message);
break;
// If it is an image, display a thumbnail
case IMAGE:
this.vue.appendImage(message);
if (message.getSender().equals("Moi")) {
this.messagesOut.add(message);
} else {
this.messagesIn.add(message);
}
break;
// If it is a file, display a message saying whether it has been sent/received.
case FICHIER:
this.vue.appendMessage(message);
if (message.getSender().equals("Moi")) {
this.messagesOut.add(message);
} else {
this.messagesIn.add(message);
}
break;
// If it is a demand for a file transfer, create a new FileTransferServer, start
// it
// and answer back with "FICHIER_ANSWER" message containing the port of the
// server.
case FICHIER_INIT:
try {
MessageFichier mFichier = (MessageFichier) arg;
int nbFile = Integer.parseInt(mFichier.getContenu());
FileTransferServer fts = new FileTransferServer(nbFile, this);
int port = fts.getPort();
fts.start();
this.answerFileTransfer(port);
} catch (IOException e) {
e.printStackTrace();
}
break;
// If it is an answer for a file transfer, create a FilteTransferClient
// with the port received and the path of the file(s) to send,
// and send the files.
case FICHIER_ANSWER:
try {
MessageFichier mFichier = (MessageFichier) arg;
int port = Integer.parseInt(mFichier.getContenu());
@SuppressWarnings("unchecked")
FileTransferClient ftc = new FileTransferClient(port, (ArrayList<File>) this.files.clone(), this);
ftc.sendFiles();
this.files.clear();
} catch (IOException | InterruptedException e) {
e.printStackTrace();
}
break;
// Do nothing
default:
}
}
// If the other user closes the session or the communication is broken
// Disable the view (TextArea, Buttons..) and display a message
@Override
public void updateSocketState(Object o, Object arg) {
this.vue.endSession(this.pseudoOther);
}
}

View file

@ -39,9 +39,6 @@ import messages.Message.TypeMessage;
public class VueSession extends JPanel {
/**
*
*/
private static final long serialVersionUID = 1L;
private JButton sendMessage;
@ -58,12 +55,7 @@ public class VueSession extends JPanel {
this.setBorder(new EmptyBorder(5, 5, 5, 5));
this.setLayout(new BorderLayout(0, 0));
this.chatInput = new JTextArea();
this.chatInput.setColumns(10);
this.chatInput.setLineWrap(true);
this.chatInput.setWrapStyleWord(true);
this.chatInput.addKeyListener(this.c);
// Create the display zone
this.chatWindow = new JTextPane();
this.chatWindow.setEditable(false);
this.chatWindow.setEditorKit(new WrapEditorKit());
@ -71,21 +63,32 @@ public class VueSession extends JPanel {
JScrollPane chatScroll = new JScrollPane(this.chatWindow);
chatScroll.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);
// Create the input zone
this.chatInput = new JTextArea();
this.chatInput.setColumns(10);
this.chatInput.setLineWrap(true);
this.chatInput.setWrapStyleWord(true);
this.chatInput.addKeyListener(this.c);
JPanel bottom = new JPanel();
bottom.setLayout(new BorderLayout(0, 0));
// remap "ENTER" to "none" to avoid "\n" in the input area after sending message
// Remap "ENTER" to "none" to avoid "\n" in the input area when pressing "ENTER"
// to send a message
KeyStroke enter = KeyStroke.getKeyStroke("ENTER");
this.chatInput.getInputMap().put(enter, "none");
KeyStroke shiftEnter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, KeyEvent.SHIFT_DOWN_MASK);
this.chatInput.getInputMap().put(shiftEnter, "insert-break");
this.importFile = new JButton("Importer..");
this.importFile.addActionListener(this.c);
// Create a scroller to be able to send messages of several lines
JScrollPane inputScroll = new JScrollPane(this.chatInput);
inputScroll.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
// Import file button
this.importFile = new JButton("Importer..");
this.importFile.addActionListener(this.c);
// Send message button
this.sendMessage = new JButton("Envoyer");
this.sendMessage.addActionListener(this.c);
@ -93,6 +96,7 @@ public class VueSession extends JPanel {
bottom.add(inputScroll, BorderLayout.CENTER);
bottom.add(this.sendMessage, BorderLayout.EAST);
// Add the components to the view
this.add(chatScroll, BorderLayout.CENTER);
this.add(bottom, BorderLayout.SOUTH);
@ -102,32 +106,30 @@ public class VueSession extends JPanel {
}
// -------------- GETTERS -------------- //
protected JButton getButtonEnvoyer() {
return this.sendMessage;
}
protected JButton getButtonImportFile() {
return this.importFile;
}
protected String getInputedText() {
return this.chatInput.getText();
}
protected void appendInputedText(String str) {
this.chatInput.append(str);
}
// -------------- DISPLAY METHODS -------------- //
protected void resetZoneSaisie() {
this.chatInput.setText("");
}
private void setCaretToEnd() {
this.chatWindow.setCaretPosition(this.chatWindow.getDocument().getLength());
}
/**
* Append the given string to the ChatWindow.
*
* @param str
*/
protected void appendString(String str) {
try {
Document doc = this.chatWindow.getDocument();
@ -137,12 +139,16 @@ public class VueSession extends JPanel {
}
}
/**
* Append the given Message to the ChatWindow.
*
* @param message
*/
protected void appendMessage(Message message) {
try {
StyledDocument sdoc = this.chatWindow.getStyledDocument();
// sdoc.setParagraphAttributes(sdoc.getLength(), message.toString().length()-1,
// style, false);
sdoc.insertString(sdoc.getLength(), message.toString(), null);
} catch (BadLocationException e) {
@ -150,6 +156,14 @@ public class VueSession extends JPanel {
}
}
/**
* Append an icon with the image contained in the given message. The message has
* to contain the base64 encoded bytes of the image as a String for it to be
* decoded and displayed.
*
* @param message
*/
protected void appendImage(Message message) {
this.setCaretToEnd();
@ -165,29 +179,47 @@ public class VueSession extends JPanel {
e.printStackTrace();
}
}
private void printLineSeparator() {
this.appendString("------------------------------------------\n");
}
protected void endSession(String pseudoOther) {
this.printLineSeparator();
this.appendString(pseudoOther + " a mis fin à la session.");
this.chatInput.setEnabled(false);
this.chatInput.setFocusable(false);
this.sendMessage.setEnabled(false);
this.importFile.setEnabled(false);
/**
* Append the given string to the ChatInput.
*
* @param str
*/
protected void appendInputedText(String str) {
this.chatInput.append(str);
}
protected void resetZoneSaisie() {
this.chatInput.setText("");
}
// -------------- OTHERS -------------- //
private void setCaretToEnd() {
this.chatWindow.setCaretPosition(this.chatWindow.getDocument().getLength());
}
/**
* Retrieve all the previous messages from the controller and display them by
* appending them one by one to the ChatWindow.
*/
private void displayHistorique() {
ArrayList<Message> historique = this.c.getHistorique();
for (Message m : historique) {
if(m.getTypeMessage() == TypeMessage.IMAGE) {
if (m.getTypeMessage() == TypeMessage.IMAGE) {
this.appendImage(m);
}else {
} else {
this.appendMessage(m);
}
}
@ -197,6 +229,27 @@ public class VueSession extends JPanel {
}
}
/**
* Disable the ChatInput, the buttons "Importer" and "Envoyer" and display a
* message indicating the other user ended the session.
*
* @param pseudoOther
*/
protected void endSession(String pseudoOther) {
this.printLineSeparator();
this.appendString(pseudoOther + " a mis fin à la session.");
this.chatInput.setEnabled(false);
this.chatInput.setFocusable(false);
this.sendMessage.setEnabled(false);
this.importFile.setEnabled(false);
}
/**
* Method used when the user closes the session. Set all attributes' references
* to null, and call destroyAll() on the controller.
*/
public void destroyAll() {
if (this.c != null) {
this.c.destroyAll();
@ -207,6 +260,7 @@ public class VueSession extends JPanel {
this.sendMessage = null;
}
// ------------- PRIVATE CLASS TO WRAP TEXT -------------//
class WrapEditorKit extends StyledEditorKit {

View file

@ -242,7 +242,7 @@ public class ControleurStandard implements ActionListener, ListSelectionListener
return input.readLine();
}
// ------------OBSERVERS-------------//
// ------------OBSERVERS------------- //
@Override
public void updateInput(Object o, Object arg) {