private void OnReceived(NetState state, ByteQueue buffer, out bool throttle)
{
throttle = false;
GameClient client;
if (!m_Clients.TryGetValue(state, out client))
{
Logger.Error("Inconsistent game server state: game client for {0} not found", state);
return;
}
if (!client.Seeded)
{
if (buffer.GetPacketID() == 0xEF)
{
client.Seeded = true;
}
else if (buffer.Length >= 4)
{
byte[] peek = new byte[4];
buffer.Dequeue(peek, 0, 4);
int seed = (peek[0] << 24) | (peek[1] << 16) | (peek[2] << 8) | peek[3];
if (seed == 0)
{
Console.WriteLine("Login: {0}: Invalid client detected, disconnecting", client);
client.Dispose();
return;
}
client.m_Seed = seed;
client.Seeded = true;
}
else
{
return; // Need at least 4 bytes for the seed
}
}
int length = buffer.Length;
while (length > 0 && buffer.Length > 0)
{
int packetID = buffer.GetPacketID();
if (!client.SentFirstPacket && packetID != 0xF1 && packetID != 0xCF && packetID != 0x80 && packetID != 0x91 && packetID != 0xA4 && packetID != 0xEF)
{
Console.WriteLine("Client: {0}: Encrypted client detected, disconnecting", client);
client.Dispose();
return;
}
PacketHandler handler = m_Handlers.GetHandler(packetID);
if (handler == null)
{
byte[] data = new byte[length];
length = buffer.Dequeue(data, 0, length);
if (Environment.Logging)
{
PacketReader reader = PacketReader.CreateInstance(data, length, false);
reader.Trace(client);
PacketReader.ReleaseInstance(reader);
}
return;
}
int packetLength = handler.Length;
if (packetLength == 0)
{
// Dynamic length packet. Need at leaset 3 bytes (1 packet cmd + 2 length)
if (length >= 3)
{
packetLength = buffer.GetPacketLength();
if (packetLength < 3)
{
client.Dispose();
return;
}
}
else
{
break;
}
}
if (length >= packetLength)
{
if (handler.Ingame && client.Mobile == null)
{
Console.WriteLine("Client: {0}: Sent ingame packet (0x{1:X2}) before having been attached to a mobile", client, packetID);
client.Dispose();
return;
}
else if (handler.Ingame && client.Mobile.Deleted)
{
client.Dispose();
return;
}
else
{
ThrottlePacketCallback throttler = handler.ThrottleCallback;
if (throttler != null && !throttler(client))
{
throttle = true;
return;
}
PacketProfile profile = PacketProfile.GetIncomingProfile(packetID);
DateTime start = (profile == null ? DateTime.MinValue : DateTime.Now);
byte[] packetBuffer;
if (BufferSize >= packetLength)
{
packetBuffer = m_Buffers.AcquireBuffer();
}
else
{
packetBuffer = new byte[packetLength];
}
packetLength = buffer.Dequeue(packetBuffer, 0, packetLength);
PacketReader reader = PacketReader.CreateInstance(packetBuffer, packetLength, handler.Length != 0);
try
{
handler.OnReceive(client, reader);
}
catch (Exception e)
{
Logger.Error("Exception disarmed in HandleReceive from {0}: {1}", client.Address, e);
}
PacketReader.ReleaseInstance(reader);
length = buffer.Length;
if (BufferSize >= packetLength)
{
m_Buffers.ReleaseBuffer(packetBuffer);
}
if (profile != null)
{
profile.Record(packetLength, DateTime.Now - start);
}
}
}
else
{
break;
}
}
}