void messageHandler()
{
uint idFrom = BitConverter.ToUInt32(fromClient(), 0);
uint idTo = BitConverter.ToUInt32(fromClient(), 0);
transformD.Dispose();
transformD = cryptP.CreateDecryptor();
byte[] userByte = fromClient();
userByte = transformD.TransformFinalBlock(userByte, 0, userByte.Length);
string userFrom = Encoding.UTF8.GetString(userByte);
transformD.Dispose();
transformD = cryptP.CreateDecryptor();
byte[] messageByte = fromClient();
messageByte = transformD.TransformFinalBlock(messageByte, 0, messageByte.Length);
string message = Encoding.UTF8.GetString(messageByte);
Console.WriteLine("DEBUG " + (debug++) + ")");
if (Program.clientList.ContainsKey(idTo))
{
SocketCommunication x = Program.clientList[idTo] as SocketCommunication;
Socket msgClient = x.client;
AesCryptoServiceProvider cp = x.cryptP;
sendMessage(msgClient, cp, idFrom, userFrom, message);
regMessage(Program.messageCP, message, idFrom, idTo, 1);
}
else
{
regMessage(Program.messageCP, message, idFrom, idTo, 0);
}
}
public void sending()
{
while (true)
{
using (var sqlCon = new MySqlConnection(Program.cs)) {
sqlCon.Open();
MySqlCommand cmd = sqlCon.CreateCommand();
cmd.CommandText = "SELECT id_message, message, fromU, toU FROM messages WHERE sent = 0;";
try {
MySqlDataReader dr = cmd.ExecuteReader();
if (dr.HasRows)
{
while (dr.Read())
{
UInt64 id_m = dr.GetUInt64(dr.GetOrdinal("id_message"));
string msg = dr.GetString(dr.GetOrdinal("message"));
uint idFrom = dr.GetUInt32(dr.GetOrdinal("fromU"));
uint idTo = dr.GetUInt32(dr.GetOrdinal("toU"));
if (Program.clientList.ContainsKey(idTo))
{
using (var sqlConUser = new MySqlConnection(Program.cs)) {
sqlConUser.Open();
MySqlCommand cmdUser = sqlConUser.CreateCommand();
cmdUser.CommandText = "SELECT username FROM users WHERE id_user = @id";
cmdUser.Parameters.AddWithValue("@id", idFrom);
SocketCommunication sc = Program.clientList[idTo] as SocketCommunication;
ICryptoTransform dec;
dec = Program.messageCP.CreateDecryptor();
byte[] msgByte = Convert.FromBase64String(msg);
msgByte = dec.TransformFinalBlock(msgByte, 0, msgByte.Length);
msg = Encoding.UTF8.GetString(msgByte);
try {
MySqlDataReader drUser = cmdUser.ExecuteReader();
drUser.Read();
SocketCommunication.sendMessage(sc.client, sc.cryptP, idFrom, drUser.GetString(drUser.GetOrdinal("username")), msg);
} catch (Exception e) {
Console.WriteLine("Errore: " + e.ToString());
}
}
using (var sqlConUpdate = new MySqlConnection(Program.cs)) {
sqlConUpdate.Open();
MySqlCommand cmdUpdate = sqlConUpdate.CreateCommand();
cmdUpdate.CommandText = "UPDATE messages SET sent = 1 WHERE id_message = @id;";
cmdUpdate.Parameters.AddWithValue("@id", id_m);
cmdUpdate.ExecuteNonQuery();
}
}
}
}
} catch (MySqlException e) {
Console.WriteLine("Errore durante la lettura dei messaggi: " + e.ToString());
}
}
Thread.Sleep(5000);
}
}
static void Main(string[] args)
{
Console.WriteLine("Avvio Server Ijime");
const int PORT = 10816;
Socket server;
Socket accClient = null;
#region SOCKET BINDING
server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, PORT);
Console.WriteLine("Info: \nServer bind->" + localEndPoint.ToString());
server.Bind(localEndPoint);
server.Listen(100);
#endregion
#region MYSQL CONNECTION TEST
MySqlConnection conn = null;
try {
conn = new MySqlConnection(cs);
conn.Open();
Console.WriteLine("MySQL Version: " + conn.ServerVersion + "\n" + "Database: " + conn.Database.ToString() + "\n" + "Stato: " + conn.State.ToString() + "\n---------------\n\n");
conn.Close();
} catch (MySqlException e) {
Console.WriteLine("Error: " + e.ToString());
}
#endregion
const string MSGKEY = "OGacb4z3VEwPqHdLIE1v8lU9r7wde5uitgDInqQKXBY=";
const string MSGIV = "IRx3Af40/klYajPj8gBmuQ==";
messageCP.BlockSize = 128;
messageCP.KeySize = 256;
messageCP.IV = Convert.FromBase64String(MSGIV);
messageCP.Key = Convert.FromBase64String(MSGKEY);
messageCP.Mode = CipherMode.CBC;
messageCP.Padding = PaddingMode.PKCS7;
messageSemder msgSender = new messageSemder();
Thread senderTh = new Thread(msgSender.sending);
senderTh.Start();
while (true)
{
try {
accClient = server.Accept();
SocketCommunication sc = new SocketCommunication();
sc.client = accClient;
Thread th = new Thread(new ThreadStart(sc.tWork));
th.Start();
} catch {
break;
}
Console.WriteLine("\n# NEW CONNECTION: Local Endpoint:" + accClient.LocalEndPoint.ToString() + " Remote Endpoint:" + accClient.RemoteEndPoint.ToString() + "\n");
}
server.Close();
accClient.Close();
}
public void tWork()
{
cryptSetup();
cryptP.IV = inVec = fromClient();
cryptP.Key = key = fromClient();
transformD = cryptP.CreateDecryptor();
transformE = cryptP.CreateEncryptor();
Console.WriteLine("@ KEY RETRIVED: " + Convert.ToBase64String(key));
try {
while (flag)
{
request = Int32.Parse(Encoding.ASCII.GetString(fromClient()));
Console.WriteLine("## Log: richiesta=" + request);
switch (request)
{
case (1): //LOGIN
Console.WriteLine("\n -----------\nLogin Attempt");
login();
Console.WriteLine("Login Finish\n -----------");
break;
case (2): //LOGOUT
if (Program.clientList.ContainsKey(id))
{
Console.WriteLine("\n -----------\nLogout Attempt");
SocketCommunication x = Program.clientList[id] as SocketCommunication;
Console.WriteLine("IP: " + x.client.RemoteEndPoint.ToString());
Program.clientList.Remove(id);
updateConnected(id, 0);
Console.WriteLine("Logout Finish\n -----------");
}
flag = false;
break;
case (3): //GET PSY
getPsy();
break;
case (4): //GET MESSAGE
messageHandler();
break;
default:
flag = false;
break;
}
}
Console.WriteLine("Client Disconnected");
client.Close();
} catch (Exception e) {
Console.WriteLine("********************\nTHREAD CRASH\n********************");
Console.WriteLine("Error: " + e.ToString());
if (Program.clientList.ContainsKey(id))
{
Program.clientList.Remove(id);
updateConnected(id, 0);
}
client.Close();
}
}
