/// <summary>
/// The function which is used to proceed an incoming packet to the active TCPConnection
/// </summary>
/// <param name="con">The connection which received the packet</param>
/// <param name="buf">byte[] array containing the raw content of the received packet</param>
/// <param name="start">Start of the content in buf, usually 0</param>
/// <param name="size">Size of the packet (minus start)</param>
/// <returns>PacketIn -> Converted raw package to MemoryStream based PacketIn</returns>
public PacketIn ProcessPacket(TCPConnection con, byte[] buf, int start, int size)
{
PacketIn packet = new PacketIn( buf, start, size );
switch ( packet.ID ) {
case 0: // ResultMsg
var res = new AUTH_PACKETS.RESULT( packet.ReadUInt16(), packet.ReadUInt16(), packet.ReadInt32() );
if ( res.nRequestPacket == 2005 ) {
if ( res.nResult == 0 ) {
con.SendTCP( CreateReportPacket() );
con.SendTCP( CreateCharacterListPacket() );
}
else {
con.Disconnect();
XLog.Log( "Can't connect to game server. Result: {0} - disconnecting...", res.nResult );
}
}
break;
case 2004: // CharacterList
m_iGameCharacterList = new GAME_PACKETS.CharacterList( packet );
XLog.Log( "Character selection. Please use /use ID to select a character." );
for ( int i = 0; i < m_iGameCharacterList.nCount; i++ ) {
XLog.Log( "-> Character {0}: {1}", i + 1, m_iGameCharacterList.nList[i].szName );
}
break;
case 21: // ChatLocal
var tmp = packet.ReadInt32();
string szSource = m_dHandles.ContainsKey( tmp ) ? m_dHandles[tmp] : "INVALID-HANDLE:" + tmp;
int nLen = packet.ReadByte();
int nType = packet.ReadByte();
XLog.AddMessage( szSource, packet.ReadString( nLen ), nType );
break;
case 22: // ChatMsg
var pMessage = new GAME_PACKETS.ChatMessage( packet );
XLog.AddMessage( pMessage.szName, pMessage.szMessage, pMessage.nType );
break;
case 3: // Enter: Handle -> Name, small hack so we don't have to read the full packet (which is f*****g large)
if ( packet.ReadByte() == 0 ) {
int key = packet.ReadInt32();
if ( m_dHandles.ContainsKey( key ) ) {
m_dHandles.Remove( key );
}
packet.Seek( 77, System.IO.SeekOrigin.Current );
string value = packet.ReadString( 19 );
m_dHandles.Add( key, value );
}
break;
case 507: // Property: Own Name -> Handle
if ( m_dHandles.ContainsKey( 0 ) && m_tPingThread == null) {
var szName = m_dHandles[0];
m_dHandles.Remove( 0 );
m_dHandles.Add( packet.ReadInt32(), szName );
m_tPingThread = new System.Threading.Thread( new System.Threading.ThreadStart( SendPingPacket ) );
m_tPingThread.IsBackground = true;
m_tPingThread.Start();
}
break;
default:
break;
}
return packet;
}
/// <summary>
/// Mostly unused method here, getting called when the socket is connected.
/// </summary>
/// <param name="id">ID</param>
/// <param name="connection">Socket/TCPConnection</param>
/// <returns>Nothing</returns>
public void onConnect(int id, TCPConnection connection)
{
XLog.Log( "Connected to Game Server" );
}
/// <summary>
/// Mostly unused method here, getting called when the socket is disconnected.
/// </summary>
/// <param name="id">ID</param>
/// <param name="connection">Socket/TCPConnection</param>
/// <returns>Nothing</returns>
public void onDisconnect(int id, TCPConnection connection)
{
XLog.Log( "Disconnected from Game Server");
}
private void GenerateLoginPacket(byte[] key, TCPConnection con)
{
PacketOut o = new PacketOut( 10010 );
var a = EncryptAES( key, m_szPassword );
o.FillString( m_szName, 61 );
o.WriteInt32( a.Length );
o.Write( a, 0, a.Length );
o.Fill( 0, 61 - a.Length );
con.SendTCP( o );
}
public XClientGameEmulator(Config.ConfigNet conf, TCPManager man, XChat.XClientEmulator pBase, string pAccount, PacketOut pOut)
{
m_szAccount = pAccount;
m_cGameConnection = new TCPConnection( man, null, this, conf );
try {
m_cGameConnection.Start();
m_cGameConnection.SendTCP(CreateVersionPacket());
m_cGameConnection.SendTCP( pOut );
}
catch {
XLog.Log( "Can't connect to Game Server!" );
}
}
/// <summary>
/// Mostly unused method here, getting called when the socket is disconnected.
/// </summary>
/// <param name="id">ID</param>
/// <param name="connection">Socket/TCPConnection</param>
/// <returns>Nothing</returns>
public void onDisconnect(int id, TCPConnection connection)
{
XLog.Log( "Disconnected from Authentication server." );
}
public PacketIn ProcessPacket(TCPConnection con, byte[] buf, int start, int size)
{
PacketIn packet = new PacketIn( buf, start, size );
switch ( packet.ID ) {
case 72: // TS_AC_AES_KEY_IV
var pAES = new AUTH_PACKETS.AES_KEY_IV( packet );
m_pAES_KEY = m_cRSA.PrivateDecrypt( pAES.nKey, OpenSSL.Crypto.RSA.Padding.PKCS1 );
GenerateLoginPacket( m_pAES_KEY, con );
break;
case 10000: // TS_AC_RESULT
var pResult = new AUTH_PACKETS.RESULT( packet.ReadUInt16(), packet.ReadUInt16(), packet.ReadInt32() );
if ( pResult.nLoginFlag == 1 ) {
PacketOut o = new PacketOut( 10021 );
con.SendTCP( o );
}
else {
m_cAuthConnection.Disconnect();
XLog.Log( "Login failed. Result: {0} - Disconnecting...", pResult.nResult );
}
m_szPassword = string.Empty;
break;
case 10022: // TS_AC_SERVER_LIST
m_iAuthServerList = new AUTH_PACKETS.SERVER_LIST( packet );
XLog.Log( "Server selection. Please use /select ID to connect to one of the listed servers below." );
for ( int i = 0; i < m_iAuthServerList.count; i++ ) {
XLog.Log( string.Format( "-> Server {0}: {1}", i + 1, m_iAuthServerList.list[i].server_name ) );
}
break;
case 10024: // TS_AC_SELECT_SERVER
con.Disconnect();
var pSelectServer = new AUTH_PACKETS.SELECT_SERVER( packet, ref m_pAES_KEY );
Config.ConfigNet conf = new Config.ConfigNet();
conf.Port = m_iAuthServerList.list[m_nSelectedServerIdx].server_port;
conf.ListenIp = System.Net.IPAddress.Parse( m_iAuthServerList.list[m_nSelectedServerIdx].server_ip );
PacketOut oEncrypt = new PacketOut( 2005 );
oEncrypt.FillString( m_szName, 61 );
oEncrypt.Write( pSelectServer.encrypted_data, 0, pSelectServer.encrypted_data.Length );
oEncrypt.FinalizeLengthAndChecksum();
con.Close();
m_cClientBase.CreateGameServerSession( oEncrypt, conf, m_szName );
break;
default:
break;
}
return packet;
}
public XClientAuthEmulator(TCPManager man, Config.ConfigNet conf, string pAccount, string pPassword, XChat.XClientEmulator cBase)
{
m_szName = pAccount;
m_szPassword = pPassword;
m_cClientBase = cBase;
try {
m_cAuthConnection = new TCPConnection( man, null, this, conf );
m_cAuthConnection.Start();
m_cAuthConnection.SendTCP( this.CreateVersionPacket() );
m_cAuthConnection.SendTCP( this.CreateAESPacket() );
}
catch {
XLog.Log( "Can't connect to Authentication Server!" );
}
}
/// <summary>
/// Mostly unused method here, getting called when the socket is connected.
/// </summary>
/// <param name="id">ID</param>
/// <param name="connection">Socket/TCPConnection</param>
/// <returns>Nothing</returns>
public void onConnect(int id, TCPConnection connection)
{
XLog.Log( "Connected to Authentication server." );
}
private void Disconnect(SocketAsyncEventArgs e)
{
TCPConnection token = e.UserToken as TCPConnection;
token.Disconnect();
}
// This method is invoked when an asynchronous send operation completes.
// The method issues another receive on the socket to read any additional
// data sent from the client
//
// <param name="e"></param>
private void ProcessSend(SocketAsyncEventArgs e)
{
TCPConnection token = e.UserToken as TCPConnection;
if (e.SocketError == SocketError.Success)
{
try
{
Queue <byte[]> q = token.m_tcpQueue;
int sent = e.BytesTransferred;
int count = 0;
byte[] data = e.Buffer;
if (data == null)
{
return;
}
lock (q)
{
if (q.Count > 0)
{
// Log.WarnFormat("async sent {0} bytes, sending queued packets count: {1}", sent, q.Count);
count = CombinePackets(data, q, data.Length, token);
}
if (count <= 0)
{
// Log.WarnFormat("async sent {0} bytes", sent);
token.m_sendingTcp = false;
return;
}
}
int start = Environment.TickCount;
token.m_writeEventArgs.SetBuffer(0, count);
token.Socket.SendAsync(token.m_writeEventArgs);
int took = Environment.TickCount - start;
if (took > 100)
{
Console.WriteLine("{0} - ProcessSend took {0}ms! (TCP to client: {1})", "lol", took, token.ToString());
}
}
catch (ObjectDisposedException)
{
Console.WriteLine("Packet processor: ObjectDisposedException");
}
catch (System.Net.Sockets.SocketException ex)
{
Console.WriteLine("Packet processor: SocketException: {0}", ex.SocketErrorCode);
//GameServer.Instance.Disconnect(client);
}
catch (Exception ex)
{
// assure that no exception is thrown into the upper layers and interrupt game loops!
Console.WriteLine("AsyncSendCallback. client: " + token + ", Exception: {0}", ex);
//GameServer.Instance.Disconnect(client);
}
}
else
{
token.Disconnect();
}
}
private void ProcessAccept(SocketAsyncEventArgs e)
{
// Interlocked.Increment(ref m_numConnectedSockets);
// Console.WriteLine("Client connection accepted. There are {0} clients connected to the server",
// m_numConnectedSockets);
// create a new connection object for this incoming connection
Socket sock = null;
try
{
if (m_listen == null)
{
return;
}
sock = e.AcceptSocket;
// sock.SendBufferSize = m_iocp.BufferSize;
// sock.ReceiveBufferSize = m_iocp.BufferSize;
// sock.NoDelay = Constants.UseNoDelay;
TCPConnection baseSocket = null;
try
{
string ip = sock.Connected ? sock.RemoteEndPoint.ToString() : "socket disconnected";
//Globals.Log.Debug("{0} - Incoming connection from {1}", m_config.Name, ip);
baseSocket = new TCPConnection(m_iocp, sock, m_networkHandler, m_config);
baseSocket.Tag = new ConnectionTag();
// lock (_clients)
// _clients.Add(baseSocket);
baseSocket.OnConnect();
baseSocket.StartReceive();
}
catch (SocketException)
{
//Globals.Log.Error("BaseServer SocketException");
if (baseSocket != null)
{
baseSocket.Disconnect();
}
}
catch (Exception ex)
{
//Globals.Log.Error("Client creation", ex);
if (baseSocket != null)
{
baseSocket.Disconnect();
}
}
}
catch
{
//Globals.Log.Error("AcceptCallback: Catch");
if (sock != null) // don't leave the socket open on exception
{
try
{
sock.Close();
}
catch
{
}
}
}
finally
{
if (m_listen != null)
{
// e.AcceptSocket = null;
StartAccept(e);
}
}
}
/// <summary>
/// Combines queued packets in one stream.
/// </summary>
/// <param name="buf">The target buffer.</param>
/// <param name="q">The queued packets.</param>
/// <param name="length">The max stream len.</param>
/// <param name="client">The client.</param>
/// <returns>The count of bytes writen.</returns>
private int CombinePackets(byte[] buf, Queue<byte[]> q, int length, TCPConnection client)
{
int i = 0;
do
{
var pak = q.Peek();
if (i + pak.Length > buf.Length)
{
if (i == 0)
{
//Globals.Log.Warning("packet size {0} > buf size {1}, ignored; client: {2}\n{3}", pak.Length, buf.Length, client,
//Marshal.ToHexDump("packet data:", pak));
q.Dequeue();
continue;
}
break;
}
Buffer.BlockCopy(m_encoding.Encode(pak), 0, buf, i, pak.Length);
i += pak.Length;
q.Dequeue();
} while (q.Count > 0);
return i;
}
private void ProcessAccept(SocketAsyncEventArgs e)
{
// Interlocked.Increment(ref m_numConnectedSockets);
// Console.WriteLine("Client connection accepted. There are {0} clients connected to the server",
// m_numConnectedSockets);
// create a new connection object for this incoming connection
Socket sock = null;
try
{
if (m_listen == null)
return;
sock = e.AcceptSocket;
// sock.SendBufferSize = m_iocp.BufferSize;
// sock.ReceiveBufferSize = m_iocp.BufferSize;
// sock.NoDelay = Constants.UseNoDelay;
TCPConnection baseSocket = null;
try
{
string ip = sock.Connected ? sock.RemoteEndPoint.ToString() : "socket disconnected";
//Globals.Log.Debug("{0} - Incoming connection from {1}", m_config.Name, ip);
baseSocket = new TCPConnection(m_iocp, sock, m_networkHandler, m_config);
baseSocket.Tag = new ConnectionTag();
// lock (_clients)
// _clients.Add(baseSocket);
baseSocket.OnConnect();
baseSocket.StartReceive();
}
catch (SocketException)
{
//Globals.Log.Error("BaseServer SocketException");
if (baseSocket != null)
baseSocket.Disconnect();
}
catch (Exception ex)
{
//Globals.Log.Error("Client creation", ex);
if (baseSocket != null)
baseSocket.Disconnect();
}
}
catch
{
//Globals.Log.Error("AcceptCallback: Catch");
if (sock != null) // don't leave the socket open on exception
{
try
{
sock.Close();
}
catch
{
}
}
}
finally
{
if (m_listen != null)
{
// e.AcceptSocket = null;
StartAccept(e);
}
}
}
