private async Task ProcessIncoming(NetState ns)
{
var inPipe = ns.Connection.Transport.Input;
while (true)
{
if (NetState.AsyncState.Paused)
{
continue;
}
try
{
ReadResult result = await inPipe.ReadAsync();
if (result.IsCanceled || result.IsCompleted)
{
return;
}
ReadOnlySequence <byte> seq = result.Buffer;
if (seq.IsEmpty)
{
break;
}
int pos = PacketHandlers.ProcessPacket(_messagePumpService, ns, seq);
if (pos <= 0)
{
break;
}
inPipe.AdvanceTo(seq.Slice(0, pos).End);
}
catch
{
// ignored
}
}
inPipe.Complete();
}
public static void Initialize()
{
PacketHandlers.Register(0xBD, 0, true, new OnPacketReceive(ClientVersion));
}
public bool HandleReceive(NetState ns)
{
ByteQueue buffer = ns.Buffer;
if (buffer == null || buffer.Length <= 0)
{
return(true);
}
lock ( buffer )
{
int length = buffer.Length;
if (!ns.Seeded)
{
if (buffer.Length >= 4)
{
buffer.Dequeue(m_Peek, 0, 4);
int seed = (m_Peek[0] << 24) | (m_Peek[1] << 16) | (m_Peek[2] << 8) | m_Peek[3];
if (seed == 0)
{
Console.WriteLine("Login: {0}: Invalid client detected, disconnecting", ns);
ns.Dispose();
return(false);
}
ns.m_Seed = seed;
ns.Seeded = true;
length = buffer.Length;
}
else
{
return(true);
}
}
while (length > 0 && ns.Running)
{
int packetID = buffer.GetPacketID();
if (!ns.SentFirstPacket && packetID != 0xF1 && packetID != 0xCF && packetID != 0x80 && packetID != 0x91 && packetID != 0xA4)
{
Console.WriteLine("Client: {0}: Encrypted client detected, disconnecting", ns);
ns.Dispose();
break;
}
PacketHandler handler = PacketHandlers.GetHandler(packetID);
if (handler == null)
{
byte[] data = new byte[length];
length = buffer.Dequeue(data, 0, length);
new PacketReader(data, length, false).Trace(ns);
break;
}
int packetLength = handler.Length;
if (packetLength <= 0)
{
if (length >= 3)
{
packetLength = buffer.GetPacketLength();
if (packetLength < 3)
{
ns.Dispose();
break;
}
}
else
{
break;
}
}
if (length >= packetLength)
{
if (handler.Ingame && ns.Mobile == null)
{
Console.WriteLine("Client: {0}: Sent ingame packet (0x{1:X2}) before having been attached to a mobile", ns, packetID);
ns.Dispose();
break;
}
else if (handler.Ingame && ns.Mobile.Deleted)
{
ns.Dispose();
break;
}
else
{
ThrottlePacketCallback throttler = handler.ThrottleCallback;
if (throttler != null && !throttler(ns))
{
m_Throttled.Enqueue(ns);
return(false);
}
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 r = new PacketReader(packetBuffer, packetLength, handler.Length != 0);
handler.OnReceive(ns, r);
length = buffer.Length;
if (BufferSize >= packetLength)
{
m_Buffers.ReleaseBuffer(packetBuffer);
}
if (profile != null)
{
profile.Record(packetLength, DateTime.Now - start);
}
}
}
else
{
break;
}
}
}
return(true);
}
public static void Initialize()
{
PacketHandlers.RegisterEncoded(0x1E, true, new OnEncodedPacketReceive(EquipLastWeaponRequest));
}
public GameServer(NetServer server, PacketHandlers handlers)
{
m_Server = server;
m_Handlers = handlers;
}
public static void Initialize()
{
PacketHandlers.RegisterExtended(0x2C, true, new OnPacketReceive(BandageRequest));
}
private void OnReceived(UOSocket state, ByteQueue buffer, out bool throttle)
{
throttle = false;
NetState client;
if (!m_Clients.TryGetValue(state, out client))
{
log.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)
{
var peek = new byte[4];
buffer.Dequeue(peek, 0, 4);
var seed = (peek[0] << 24) | (peek[1] << 16) | (peek[2] << 8) | peek[3];
if (seed == 0)
{
log.Info("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
}
}
var 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)
{
log.Info("Client: {0}: Encrypted client detected, disconnecting", client);
client.Dispose();
return;
}
var handler = PacketHandlers.GetHandler(packetID);
if (handler == null)
{
var data = new byte[length];
length = buffer.Dequeue(data, 0, length);
if (Core.Logging)
{
var reader = PacketReader.CreateInstance(data, length, false);
reader.Trace(client);
PacketReader.ReleaseInstance(reader);
}
return;
}
var 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)
{
log.Info("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
{
var throttler = handler.ThrottleCallback;
if (throttler != null && !throttler(client))
{
throttle = true;
return;
}
var profile = PacketProfile.GetIncomingProfile(packetID);
var start = (profile == null ? DateTime.MinValue : DateTime.UtcNow);
byte[] packetBuffer;
if (BufferSize >= packetLength)
{
packetBuffer = m_Buffers.AcquireBuffer();
}
else
{
packetBuffer = new byte[packetLength];
}
packetLength = buffer.Dequeue(packetBuffer, 0, packetLength);
var reader = PacketReader.CreateInstance(packetBuffer, packetLength, handler.Length != 0);
try
{
handler.OnReceive(client, reader);
}
catch (Exception e)
{
log.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.UtcNow - start);
}
}
}
else
{
break;
}
}
}
public static void Initialize()
{
PacketHandlers.RegisterExtended(0x33, true, new OnPacketReceive(MultiMouseMovementRequest));
}
public static void Initialize()
{
PacketHandlers.Register(108, 19, true, new OnPacketReceive(AntiEUOTargeting));
}
public PacketHandler GetHandler(int packetID)
{
return(PacketHandlers.GetHandler(packetID));
}
public bool HandleReceive(NetState ns)
{
lock ( ns )
{
ByteQueue buffer = ns.Buffer;
if (buffer == null)
{
return(true);
}
int length = buffer.Length;
if (!ns.Seeded)
{
if (length >= 4)
{
buffer.Dequeue(m_Peek, 0, 4);
int seed = (m_Peek[0] << 24) | (m_Peek[1] << 16) | (m_Peek[2] << 8) | m_Peek[3];
//Console.WriteLine( "Login: {0}: Seed is 0x{1:X8}", ns, seed );
if (seed == 0)
{
log.Warn(String.Format("Login: {0}: Invalid client detected, disconnecting", ns));
ns.Dispose();
return(false);
}
ns.m_Seed = seed;
ns.Seeded = true;
}
return(true);
}
//Console.WriteLine( "{" );
while (length > 0 && ns.Running)
{
int packetID = buffer.GetPacketID();
if (!ns.SentFirstPacket && packetID != 0xF1 && packetID != 0xCF && packetID != 0x80 && packetID != 0x91 && packetID != 0xA4 && packetID != 0xBF)
{
log.Warn(String.Format("Client: {0}: Encrypted client detected, disconnecting", ns));
ns.Dispose();
break;
}
PacketHandler handler = PacketHandlers.GetHandler(packetID);
if (handler == null)
{
byte[] data = new byte[length];
length = buffer.Dequeue(data, 0, length);
new PacketReader(data, length, false).Trace(ns);
break;
}
int packetLength = handler.Length;
if (packetLength <= 0)
{
if (length >= 3)
{
packetLength = buffer.GetPacketLength();
if (packetLength < 3)
{
ns.Dispose();
break;
}
}
else
{
break;
}
}
if (length >= packetLength)
{
if (handler.Ingame && ns.Mobile == null)
{
log.Warn(String.Format("Client: {0}: Sent ingame packet (0x{1:X2}) before having been attached to a mobile", ns, packetID));
ns.Dispose();
break;
}
else if (handler.Ingame && ns.Mobile.Deleted)
{
ns.Dispose();
break;
}
else
{
ThrottlePacketCallback throttler = handler.ThrottleCallback;
if (throttler != null && !throttler(ns))
{
m_Throttled.Enqueue(ns);
//Console.WriteLine( "}" );
return(false);
}
//Console.WriteLine( handler.OnReceive.Method.Name );
PacketProfile profile = PacketProfile.GetIncomingProfile(packetID);
DateTime start = (profile == null ? DateTime.MinValue : DateTime.Now);
byte[] packetBuffer;
if (BufferSize >= packetLength)
{
packetBuffer = m_Buffers.AquireBuffer();
}
else
{
packetBuffer = new byte[packetLength];
}
packetLength = buffer.Dequeue(packetBuffer, 0, packetLength);
PacketReader r = new PacketReader(packetBuffer, packetLength, handler.Length != 0);
try {
handler.OnReceive(ns, r);
} catch (Exception e) {
log.Fatal(String.Format("Exception disarmed in HandleReceive from {0}",
ns.Address), e);
}
length = buffer.Length;
if (BufferSize >= packetLength)
{
m_Buffers.ReleaseBuffer(packetBuffer);
}
if (profile != null)
{
profile.Record(packetLength, DateTime.Now - start);
}
//Console.WriteLine( "Client: {0}: Unhandled packet 0x{1:X2}", ns, packetID );
//Utility.FormatBuffer( Console.Out, new System.IO.MemoryStream( r.Buffer ), r.Buffer.Length );
}
}
else
{
break;
}
}
//Console.WriteLine( "}" );
}
return(true);
}
public GameServer( NetServer server, PacketHandlers handlers )
{
m_Server = server;
m_Handlers = handlers;
}
public bool HandleReceive(NetState ns)
{
ByteQueue queue1;
int num1;
int num2;
int num3;
PacketHandler handler1;
byte[] buffer1;
int num4;
ThrottlePacketCallback callback1;
PacketProfile profile1;
DateTime time1;
PacketReader reader1;
NetState state1 = ns;
lock (ns)
{
queue1 = ns.Buffer;
if (queue1 == null)
{
return(true);
}
num1 = queue1.Length;
if (ns.Seeded)
{
goto Label_0250;
}
if (num1 >= 4)
{
queue1.Dequeue(this.m_Peek, 0, 4);
num2 = ((((this.m_Peek[0] << 24) | (this.m_Peek[1] << 16)) | (this.m_Peek[2] << 8)) | this.m_Peek[3]);
if (num2 == 0)
{
Console.WriteLine("Login: {0}: Invalid client detected, disconnecting", ns);
ns.Dispose();
return(false);
}
ns.m_Seed = num2;
ns.Seeded = true;
}
return(true);
Label_009D:
queue1.Peek(this.m_Peek, 0, 1);
num3 = this.m_Peek[0];
if (((!ns.SentFirstPacket && (num3 != 241)) && ((num3 != 207) && (num3 != 128))) && ((num3 != 145) && (num3 != 164)))
{
Console.WriteLine("Client: {0}: Encrypted client detected, disconnecting", ns);
ns.Dispose();
goto Label_0269;
}
handler1 = PacketHandlers.GetHandler(num3);
if (handler1 == null)
{
buffer1 = queue1.Dequeue(num1);
new PacketReader(buffer1, 0).Trace(ns);
goto Label_0269;
}
num4 = handler1.Length;
if (num4 <= 0)
{
if (num1 < 3)
{
goto Label_0269;
}
queue1.Peek(this.m_Peek, 0, 3);
num4 = ((this.m_Peek[1] << 8) | this.m_Peek[2]);
if (num4 < 3)
{
ns.Dispose();
goto Label_0269;
}
}
if (num1 < num4)
{
goto Label_0269;
}
if (handler1.Ingame && (ns.Mobile == null))
{
Console.WriteLine("Client: {0}: Sent ingame packet (0x{1:X2}) before having been attached to a mobile", ns, num3);
ns.Dispose();
goto Label_0269;
}
if (handler1.Ingame && ns.Mobile.Deleted)
{
ns.Dispose();
goto Label_0269;
}
callback1 = handler1.ThrottleCallback;
if ((callback1 != null) && !callback1.Invoke(ns))
{
this.m_Throttled.Enqueue(ns);
return(false);
}
profile1 = PacketProfile.GetIncomingProfile(num3);
time1 = ((profile1 == null) ? DateTime.MinValue : DateTime.Now);
reader1 = new PacketReader(queue1.Dequeue(num4), (handler1.Length != 0));
handler1.OnReceive(ns, reader1);
num1 = queue1.Length;
if (profile1 != null)
{
profile1.Record(num4, ((TimeSpan)(DateTime.Now - time1)));
}
Label_0250:
if (num1 > 0)
{
if (ns.Running)
{
goto Label_009D;
}
}
}
Label_0269:
return(true);
}
public static void Initialize()
{
PacketHandlers.RegisterEncoded(0x1E, true, EquipLastWeaponRequest);
}