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)
{
Console.WriteLine("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)
{
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);
//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) {
Console.WriteLine("Exception disarmed in HandleReceive from {0}: {1}",
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);
}
private bool HandleReceive(NetState ns)
{
lock ( ns )
{
ByteQueue buffer = ns.Buffer;
if (buffer == null)
{
return(true);
}
int length = buffer.Length;
if (!ns.Seeded)
{
if (buffer.GetPacketID() == 0xEF)
{
// new packet in client 6.0.5.0 replaces the traditional seed method with a seed packet
// 0xEF = 239 = multicast IP, so this should never appear in a normal seed. So this is backwards compatible with older clients.
ns.Seeded = true;
}
else 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];
if (log.IsDebugEnabled)
{
log.DebugFormat("Login: {0}: Seed is 0x{1:X8}", ns, seed);
}
if (seed == 0)
{
log.WarnFormat("Login: {0}: Invalid client detected, disconnecting", ns);
ns.Dispose();
return(false);
}
ns.m_Seed = seed;
ns.Seeded = true;
}
return(true);
}
while (length > 0 && ns.Running)
{
int packetID = buffer.GetPacketID();
if (!ns.SentFirstPacket && packetID != 0xF0 && packetID != 0xF1 && packetID != 0xCF && packetID != 0x80 && packetID != 0x91 && packetID != 0xA4 && packetID != 0xBF && packetID != 0xEF)
{
log.WarnFormat("Client: {0}: Encrypted client detected, disconnecting", ns);
ns.Dispose();
break;
}
PacketHandler handler = ns.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.WarnFormat("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.UtcNow);
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.UtcNow - start);
}
}
}
else
{
break;
}
}
}
return(true);
}
public static byte[] GetUnusedBuffer()
{
return(m_UnusedBuffers.AquireBuffer());
}