void device_OnPacketArrival(object sender, CaptureEventArgs e)
{
var packet = Packet.ParsePacket(e.Packet.LinkLayerType, e.Packet.Data);
// Check if IP packet
IpPacket ipPacket = packet.Extract(typeof(IpPacket)) as IpPacket;
if (ipPacket == null)
return;
if (!CheckIfCorrectIP(ipPacket.SourceAddress.ToString()) && !CheckIfCorrectIP(ipPacket.DestinationAddress.ToString()))
{
return;
}
TcpPacket tcpPacket = packet.Extract(typeof(TcpPacket)) as TcpPacket;
if (tcpPacket == null)
return;
if (!FoundConnection)
{
if (tcpPacket.Syn && tcpPacket.Ack)
{
// Found new connection.
// Check version...
if (frmMain.Instance.CheckRunningEXEVersion())
{
// Correct version
FoundConnection = true;
_currentPortMap = new KeyValuePair<ushort, ushort>(tcpPacket.DestinationPort, tcpPacket.SourcePort);
_currentSession = new Session();
MasterThread.Instance.AddCallback((a) =>
{
using (MaplePacket p = new MaplePacket(0xEE00))
{
p.WriteBool(true);
p.WriteString(ipPacket.SourceAddress.ToString());
p.WriteUShort(tcpPacket.SourcePort);
p.SwitchOver();
p.Reset(0);
ServerConnection.Instance.ForwardPacket(MaplePacket.CommunicationType.ClientPacket, p);
}
});
Logger.WriteLine("[CON] New connection found on {0}!", e.Device.Description);
if (cache != 0)
{
_currentSession.SetOutboundSequence(cache);
cache = 0;
}
_currentSession.BufferTCPPacket(tcpPacket, !(_currentPortMap.Key == tcpPacket.SourcePort && _currentPortMap.Value == tcpPacket.DestinationPort));
}
else
{
Logger.WriteLine("Incorrect MapleStory version. Ignoring connection.");
}
}
else if (tcpPacket.Syn && !tcpPacket.Ack) // Heh fix
{
cache = (int)(tcpPacket.SequenceNumber + 1);
}
}
else if (FoundConnection &&
(
(_currentPortMap.Key == tcpPacket.SourcePort && _currentPortMap.Value == tcpPacket.DestinationPort)
||
(_currentPortMap.Value == tcpPacket.SourcePort && _currentPortMap.Key == tcpPacket.DestinationPort)
)
)
{
if (tcpPacket.Fin || tcpPacket.Rst)
{
FoundConnection = false;
Logger.WriteLine("[CON] Connection Lost");
MasterThread.Instance.AddCallback((a) =>
{
using (MaplePacket p = new MaplePacket(0xEE00))
{
p.WriteBool(false);
p.SwitchOver();
p.Reset(0);
ServerConnection.Instance.ForwardPacket(MaplePacket.CommunicationType.ClientPacket, p);
}
});
return;
}
bool result = _currentSession.BufferTCPPacket(tcpPacket, !(_currentPortMap.Key == tcpPacket.SourcePort && _currentPortMap.Value == tcpPacket.DestinationPort));
if (!result)
{
FoundConnection = false;
_currentSession.Dispose();
_currentSession = null;
}
}
else
{
// Logger.WriteLine("[DEBUG] {0} - {1} {2}", FoundConnection, tcpPacket.SourcePort, tcpPacket.DestinationPort);
}
}
public ClientConnection(Socket pSocket)
: base(pSocket)
{
uniqueid = Program.Random.Next(0, 10000);
Pong = true;
IsFake = false;
Program.Clients.Add(this);
Clear();
_exporter = new MSBExporter();
Logger_WriteLine("Client Connected!");
byte[] sendkey = new byte[32], recvkey = new byte[32];
Program.Random.NextBytes(sendkey);
Program.Random.NextBytes(recvkey);
using (MaplePacket pack = new MaplePacket(MaplePacket.CommunicationType.ServerPacket, 0xEEFF))
{
pack.WriteString(Logger.Version);
// Add encryption keys
pack.WriteBytes(recvkey);
pack.WriteBytes(sendkey);
for (byte i = 0; i < (byte)MaplePacket.CommunicationType.AMOUNT; i++)
{
pack.WriteUShort((ushort)Program.ValidHeaders[i].Keys.Count);
foreach (var header in Program.ValidHeaders[i].Keys)
pack.WriteUShort(header);
}
pack.WriteByte((byte)Program.AcceptedIPs.Count);
foreach (string ip in Program.AcceptedIPs)
pack.WriteString(ip);
#if LOCALE_GMS
pack.WriteBool(true);
pack.WriteBytes(GMSKeys.GetKeyForVersion());
#elif LOCALE_KMS
pack.WriteBool(false);
#else
pack.WriteBool(true);
pack.WriteBytes(new byte[] { 0x13, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0xB4, 0x00, 0x00, 0x00,
0x1B, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x52, 0x00, 0x00, 0x00 });
#endif
pack.WriteByte(ServerMapleInfo.LOCALE);
pack.WriteUShort(ServerMapleInfo.VERSION);
SendPacket(pack);
}
SetKeys(sendkey, recvkey);
SendInfoText("Welcome! Please open MapleStory.");
}
public void Parse(string pFile, bool pMapleSharkFile)
{
using (FileStream stream = new FileStream(pFile, FileMode.Open, FileAccess.Read))
{
BinaryReader reader = new BinaryReader(stream);
if (reader.ReadUInt16() != 0x2020)
{
return;
}
string ip2 = reader.ReadString(); // Local Endpoint
ushort port2 = reader.ReadUInt16(); // Port
string ip = reader.ReadString(); // Remote Endpoint
ushort port = reader.ReadUInt16(); // Port
byte locale = reader.ReadByte(); // Locale
ushort version = reader.ReadUInt16(); // Version
Logger.WriteLine("Emulating socket connection with connection from V{0}", version / 100);
MaplePacket p;
if (pMapleSharkFile)
{
if (ip.Contains(":"))
{
// Shit.
ip = "1.2.3.4";
}
p = new MaplePacket(MaplePacket.CommunicationType.ClientPacket, 0xEE00);
p.WriteBool(true);
p.WriteString(ip);
p.WriteUShort(port);
p.SwitchOver();
p.Reset(0);
PacketHandler(p);
}
while (stream.Position < stream.Length)
{
long timestamp = reader.ReadInt64();
ushort size = reader.ReadUInt16();
ushort opcode = reader.ReadUInt16();
bool outbound = reader.ReadBoolean();
byte[] buffer = new byte[3 + size];
buffer[0] = (byte)(outbound ? MaplePacket.CommunicationType.ClientPacket : MaplePacket.CommunicationType.ServerPacket);
Buffer.BlockCopy(BitConverter.GetBytes(opcode), 0, buffer, 1, 2);
Buffer.BlockCopy(reader.ReadBytes(size), 0, buffer, 3, size);
if (opcode >= 0xEE00) continue; // Ignore!
MaplePacket packet = new MaplePacket(buffer);
try
{
if (PacketHandler != null)
PacketHandler(packet);
}
catch (Exception ex)
{
Logger.WriteLine("Internal Packet Handling Exception");
throw new Exception("Internal Packet Handling Exception", ex);
}
}
if (pMapleSharkFile)
{
p = new MaplePacket(MaplePacket.CommunicationType.ClientPacket, 0xEE00);
p.WriteBool(false);
p.SwitchOver();
p.Reset(0);
PacketHandler(p);
}
}
DisconnectHandler();
}
