From 3436961bb5c01d659d09be134368f4f69460cef9 Mon Sep 17 00:00:00 2001
From: MW
Date: Sat, 26 May 2007 13:40:19 +0000
Subject: Start of rewrite 5279!

---
 Common/OpenSim.Servers/CheckSumServer.cs | 113 +++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 Common/OpenSim.Servers/CheckSumServer.cs

(limited to 'Common/OpenSim.Servers/CheckSumServer.cs')

diff --git a/Common/OpenSim.Servers/CheckSumServer.cs b/Common/OpenSim.Servers/CheckSumServer.cs
new file mode 100644
index 0000000..1125baf
--- /dev/null
+++ b/Common/OpenSim.Servers/CheckSumServer.cs
@@ -0,0 +1,113 @@
+using System;
+using System.Text;
+using System.IO;
+using System.Threading;
+using System.Net;
+using System.Net.Sockets;
+using System.Timers;
+using System.Reflection;
+using System.Collections;
+using System.Collections.Generic;
+using libsecondlife;
+using libsecondlife.Packets;
+using OpenSim.Framework.Console;
+
+
+namespace OpenSim.Servers
+{
+    public class CheckSumServer : UDPServerBase
+    {
+        //protected ConsoleBase m_console;
+
+        public CheckSumServer(int port)
+            : base(port)
+        {
+        }
+
+        protected override void OnReceivedData(IAsyncResult result)
+        {
+            ipeSender = new IPEndPoint(IPAddress.Any, 0);
+            epSender = (EndPoint)ipeSender;
+            Packet packet = null;
+            int numBytes = Server.EndReceiveFrom(result, ref epSender);
+            int packetEnd = numBytes - 1;
+
+            packet = Packet.BuildPacket(RecvBuffer, ref packetEnd, ZeroBuffer);
+
+            if (packet.Type == PacketType.SecuredTemplateChecksumRequest)
+            {
+                SecuredTemplateChecksumRequestPacket checksum = (SecuredTemplateChecksumRequestPacket)packet;
+                TemplateChecksumReplyPacket checkreply = new TemplateChecksumReplyPacket();
+                checkreply.DataBlock.Checksum = 3220703154;//180572585;
+                checkreply.DataBlock.Flags = 0;
+                checkreply.DataBlock.MajorVersion = 1;
+                checkreply.DataBlock.MinorVersion = 15;
+                checkreply.DataBlock.PatchVersion = 0;
+                checkreply.DataBlock.ServerVersion = 0;
+                checkreply.TokenBlock.Token = checksum.TokenBlock.Token;
+                this.SendPacket(checkreply, epSender);
+
+                /*
+                //if we wanted to echo the the checksum/ version from the client (so that any client worked)
+                SecuredTemplateChecksumRequestPacket checkrequest = new SecuredTemplateChecksumRequestPacket();
+                checkrequest.TokenBlock.Token = checksum.TokenBlock.Token;
+                this.SendPacket(checkrequest, epSender);
+                */
+            }
+            else if (packet.Type == PacketType.TemplateChecksumReply)
+            {
+                //echo back the client checksum reply (Hegemon's method)
+                TemplateChecksumReplyPacket checksum2 = (TemplateChecksumReplyPacket)packet;
+                TemplateChecksumReplyPacket checkreply2 = new TemplateChecksumReplyPacket();
+                checkreply2.DataBlock.Checksum = checksum2.DataBlock.Checksum;
+                checkreply2.DataBlock.Flags = checksum2.DataBlock.Flags;
+                checkreply2.DataBlock.MajorVersion = checksum2.DataBlock.MajorVersion;
+                checkreply2.DataBlock.MinorVersion = checksum2.DataBlock.MinorVersion;
+                checkreply2.DataBlock.PatchVersion = checksum2.DataBlock.PatchVersion;
+                checkreply2.DataBlock.ServerVersion = checksum2.DataBlock.ServerVersion;
+                checkreply2.TokenBlock.Token = checksum2.TokenBlock.Token;
+                this.SendPacket(checkreply2, epSender);
+            }
+            else
+            {
+            }
+
+            Server.BeginReceiveFrom(RecvBuffer, 0, RecvBuffer.Length, SocketFlags.None, ref epSender, ReceivedData, null);
+        }
+
+        private void SendPacket(Packet Pack, EndPoint endp)
+        {
+            if (!Pack.Header.Resent)
+            {
+                Pack.Header.Sequence = 1;
+            }
+
+            byte[] ZeroOutBuffer = new byte[4096];
+            byte[] sendbuffer;
+            sendbuffer = Pack.ToBytes();
+
+            try
+            {
+                if (Pack.Header.Zerocoded)
+                {
+                    int packetsize = Helpers.ZeroEncode(sendbuffer, sendbuffer.Length, ZeroOutBuffer);
+                    this.SendPackTo(ZeroOutBuffer, packetsize, SocketFlags.None, endp);
+                }
+                else
+                {
+                    this.SendPackTo(sendbuffer, sendbuffer.Length, SocketFlags.None, endp);
+                }
+            }
+            catch (Exception)
+            {
+                OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.MEDIUM, "OpenSimClient.cs:ProcessOutPacket() - WARNING: Socket exception occurred on connection ");
+
+            }
+        }
+
+        private void SendPackTo(byte[] buffer, int size, SocketFlags flags, EndPoint endp)
+        {
+            this.Server.SendTo(buffer, size, flags, endp);
+        }
+    }
+}
\ No newline at end of file
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