private bool PopString(string name)
{
try
{
string s = packet.PopString();
return(Log("string {0} = \"{1}\"", name, s));
}
catch
{
return(Error("No string available"));
}
}
/// <summary>
/// Try to login with the specified details and get the response
/// </summary>
/// <param name="cdKey">CD key hash for login</param>
/// <param name="saltedKey">Salted key hash for login</param>
/// <param name="type">Remote client type (eg. CLIENT or SERVER)</param>
/// <param name="version">Remote client version</param>
/// <param name="locale">Remote client locale</param>
/// <returns>Login response from the server</returns>
public string Login(string cdKey, string saltedKey, string type, int version, string locale)
{
string response = Protocol.LOGIN_RESPONSE_DENIED;
if (!connectionError)
{
try
{
OutboundPacket login = new OutboundPacket();
login.Append(cdKey).Append(saltedKey).Append(type).Append(version);
if (type == Protocol.HOST_SERVER)
{
login.Append(-1); // stats enabled flag for server
}
login.Append((byte)0x04).Append(locale);
Send(login);
InboundPacket loginResponse = Receive();
response = loginResponse.PopString();
}
catch
{
connectionError = true;
}
}
Close();
return(response);
}
/// <summary>
/// Handles a connection from a CLIENT
/// </summary>
/// <param name="login">Login response packet</param>
protected virtual void HandleClientConnection(InboundPacket login)
{
ConnectionLog(Protocol.LOGIN_RESPONSE_APPROVED);
Send(Protocol.LOGIN_RESPONSE_APPROVED);
byte osByte = login.PopByte(); // Host's detected operating system
locale = login.PopString(); // Host's locale, eg. int, est
// Map the OS value to the relevant enum value if it's valid
operatingSystem = Enum.IsDefined(typeof(OperatingSystem), osByte) ? (OperatingSystem)osByte : OperatingSystem.UnknownOS;
ConnectionLog("{0} OS={1} LOCALE={2}", type, operatingSystem, locale);
innerConnection = new ClientConnection(this, socket, logWriter, serverList, geoIP, operatingSystem, locale);
innerConnection.Handle(); // Handle the connection in this thread
}
/// <summary>
/// Establish the connection to the remote master server and get the challenge salt
/// </summary>
/// <returns>Master server challenge salt (or 0 on failure)</returns>
public int Connect()
{
int salt = 0;
try
{
socket.Connect(host, port);
InboundPacket challenge = Receive();
salt = int.Parse(challenge.PopString());
}
catch
{
connectionError = true;
}
return(salt);
}
/// <summary>
/// Handles a connection from a SERVER
/// </summary>
/// <param name="login">Login response packet</param>
protected virtual void HandleServerConnection(InboundPacket login)
{
ConnectionLog(Protocol.LOGIN_RESPONSE_APPROVED);
Send(Protocol.LOGIN_RESPONSE_APPROVED);
bool bStatLogging = (login.PopInt() == 0); // Seems to be -1 if disabled, 0 if enabled
byte osByte = login.PopByte(); // Host's detected operating system
locale = login.PopString(); // Host's locale, eg. int
// Map the OS value to the relevant enum value if it's valid
operatingSystem = Enum.IsDefined(typeof(OperatingSystem), osByte) ? (OperatingSystem)osByte : OperatingSystem.UnknownOS;
ConnectionLog("{0} BSTATLOGGING={1} OS={2} LOCALE={3}", type, bStatLogging, operatingSystem, locale);
innerConnection = new ServerConnection(this, socket, logWriter, serverList, geoIP, operatingSystem, locale, bStatLogging, md5Manager, cdKeyValidator, gameStats);
innerConnection.Handle(); // Handle the connection in this thread
}
/// <summary>
/// Creates a new player object from information in a received server data packet
/// </summary>
/// <param name="packet">Packet containing player information at the current pointer position</param>
/// <param name="address">Player address, from the server info header</param>
public Player(Server server, InboundPacket packet, string address)
{
Address = address;
PlayerNumber = packet.PopInt(); OnPropertyChanged("PlayerNumber");
if (server.Version > 2225)
{
PlayerID = packet.PopInt(); OnPropertyChanged("PlayerID");
}
Name = packet.PopString(); OnPropertyChanged("Name");
Ping = packet.PopInt(); OnPropertyChanged("Ping");
Score = packet.PopInt(); OnPropertyChanged("Score");
StatsID = packet.PopInt(); OnPropertyChanged("StatsID");
if (server.Version > 2225)
{
Info = packet.PopKeyValueArray(); OnPropertyChanged("Info");
}
else
{
Info = new Dictionary <string, string>();
}
}
/// <summary>
/// Handle the connection
/// </summary>
protected virtual void Handle()
{
try
{
// Initialise validation context for this session
validationContext = cdKeyValidator.BeginValidation("login");
// Log the new connection to the connection log
ConnectionLog("ACCEPT LOCALPORT={0} SALT={1}", LocalPort, cdKeyValidator.GetSalt(validationContext));
// Send the challenge salt
Send(cdKeyValidator.GetSalt(validationContext).ToString());
// Read back the authentication from the player
InboundPacket login = Receive();
cdKey = login.PopString(); // Get the first MD5 which should be the CD key hash
saltedCDKey = login.PopString(); // Get the second MD5 which should be the CD key plus salt hash
type = login.PopString(); // Type of client eg. CLIENT or SERVER
version = login.PopInt(); // Client's engine version
// Write the login info to the connection log
ConnectionLog("CONNECT MD5={0} SALTED={1} TYPE={2} VERSION={3}", cdKey, saltedCDKey, type, version);
// Set values into the validation context
validationContext.SetClientInfo(cdKey, saltedCDKey, type, version);
// Check the CD key
if (Validate(validationContext))
{
if (version < Protocol.MIN_SUPPORTED_CLIENT_VERSION)
{
ConnectionLog(Protocol.LOGIN_RESPONSE_UPGRADE);
MasterServer.Log("{0} at {1} rejected, outdated version: got {2}", type, (socket.RemoteEndPoint as IPEndPoint).Address.ToString(), version);
// This is my best guess for how an UPGRADE packet should be structured, if it's wrong it seems to crash the client
OutboundPacket UpgradePacket = new OutboundPacket(Protocol.LOGIN_RESPONSE_UPGRADE);
UpgradePacket.Append(Protocol.MIN_SUPPORTED_CLIENT_VERSION);
UpgradePacket.Append(0x00);
// Send the UPGRADE response
Send(UpgradePacket);
}
else
{
// Send MSLIST packet if enabled, if the MSLIST is sent successfully then close the
// connection (SendMSList() returns true if the MSLIST was sent)
if (!SendMSList())
{
switch (type)
{
case Protocol.HOST_CLIENT: HandleClientConnection(login); break;
case Protocol.HOST_SERVER: HandleServerConnection(login); break;
default: HandleUnknownConnection(login); break;
}
}
}
}
}
catch (ThreadAbortException)
{
aborted = true;
}
catch (Exception ex)
{
ConnectionLog("EXCEPTION: {0}", ex.Message);
}
try
{
socket.Close();
}
catch { }
ConnectionLog("CLOSED");
ConnectionThreadManager.Remove(Thread.CurrentThread);
ConnectionManager.DeRegister(this);
}