/// <summary>
/// Sends a handshake packet
/// </summary>
/// <param name="user">The user.</param>
/// <remarks></remarks>
protected void SendHandshake(User user)
{
lock (lockObject)
{
WebClient c = new WebClient();
if (!string.IsNullOrWhiteSpace(user.Password))
{
SessionID = c.DownloadString(string.Format(SessionIDUrl, user.UserName, user.Password));
if (SessionID == "Bad Login")
throw new Exception("Invalid credentials.");
string[] sessionValues = SessionID.Split(':');
user.UserName = sessionValues[2];
SessionID = sessionValues[3];
}
// Do handshake
netStream.WriteByte((byte)PacketID.Handshake);
WriteString(netStream, user.UserName);
netStream.Flush();
PacketID response = (PacketID)netStream.ReadByte();
if (response != PacketID.Handshake)
throw new Exception("Unrecognized response from server.");
ServerID = ReadString(netStream);
if (ServerID == "-")
{
// No further action required as of 1.1
}
else if (ServerID == "+")
{
// Password authentication required (presently unsupported by official
// software, so it's unsupported by us, too)
}
else
{
HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(string.Format(ServerIDUrl, user.UserName, SessionID, ServerID));
try
{
wr.GetResponse().Close();
}
catch
{
throw new Exception("Failed to authenticate with the server.");
}
}
}
}
/// <summary>
/// Sends a login packet
/// </summary>
/// <param name="user">The user.</param>
/// <param name="protocolVersion">The protocol version.</param>
/// <remarks></remarks>
protected void SendLogin(User user, int protocolVersion)
{
lock (lockObject)
{
// Send login packet
netStream.WriteByte((byte)PacketID.LoginRequest);
WriteInt(netStream, protocolVersion);
WriteString(netStream, user.UserName);
WriteLong(netStream, 0);
WriteString(netStream, "");
WriteInt(netStream, 0);
netStream.WriteByte(0);
netStream.WriteByte(0);
netStream.WriteByte(0);
netStream.WriteByte(0);
netStream.Flush();
// Receive response
PacketID response = (PacketID)netStream.ReadByte();
if (response == PacketID.Disconnect)
{
ForceDisconnect();
throw new Exception(ReadString(netStream));
}
if (response != PacketID.LoginRequest)
{
string dump = ReadString(netStream);
throw new Exception("Unrecognized response from server.");
}
Player = new PlayerEntity();
//World = new World();
//Player.ID = ReadInt(netStream);
//ReadString(netStream);
//World.Seed = ReadLong(netStream);
//World.WorldGenerator = null;
//World.Mode = (GameMode)ReadInt(netStream);
//Player.Dimension = (Dimension)((sbyte)netStream.ReadByte());
//CurrentServer.Difficulty = (Difficulty)netStream.ReadByte();
//(byte)netStream.ReadByte();
CurrentServer.MaxPlayers = netStream.ReadByte();
netStream.Flush();
Player.Name = user.UserName;
}
}
/// <summary>
/// Logs the specified user into the server
/// </summary>
/// <param name="user">The user.</param>
/// <remarks></remarks>
public void LogIn(User user)
{
if (CurrentServer == null)
throw new Exception("You must connect to a server before logging in.");
if (user.UserName.Length > 16)
throw new Exception("User name is too long. The maximum length is 16 characters.");
SendHandshake(user);
SendLogin(user, ProtocolVersion);
// Start server updater
worker = new Timer(new TimerCallback(DoWork), null, 0, TickTime);
}