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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Net;
using System.Text;
using System.Web;
using libsecondlife;
using OpenSim.Region.ScriptEngine.Common.TRPC;
namespace OpenSim.Region.ScriptEngine.Common
{
public class TRPC_Remote
{
public readonly int MaxQueueSize = 1024 * 10;
public readonly TCPCommon.ServerAndClientInterface TCPS;
public delegate void ReceiveCommandDelegate(int ID, string Command, params object[] p);
public event ReceiveCommandDelegate ReceiveCommand;
Dictionary<string, Type> TypeDictionary = new Dictionary<string, Type>();
Type[] Types =
{
typeof(String),
typeof(Int16),
typeof(Int32),
typeof(Int64),
typeof(Double),
typeof(Decimal),
typeof(Array),
typeof(LLUUID),
typeof(UInt16),
typeof(UInt32),
typeof(UInt64)
};
// TODO: Maybe we should move queue into TCPSocket so we won't have to keep one queue instance per connection
private Dictionary<int, InQueueStruct> InQueue = new Dictionary<int, InQueueStruct>();
private class InQueueStruct
{
public byte[] Queue;
public int QueueSize;
public object QueueLockObject = new object();
}
public TRPC_Remote(TCPCommon.ServerAndClientInterface TCPClientOrServer)
{
TCPS = TCPClientOrServer;
TCPS.Close += new TCPCommon.CloseDelegate(TCPS_Close);
TCPS.ClientConnected += new TCPCommon.ClientConnectedDelegate(TCPS_ClientConnected);
TCPS.DataReceived += new TCPCommon.DataReceivedDelegate(TCPS_DataReceived);
//TCPS.StartListen();
// Make a lookup dictionary for types
foreach (Type t in Types)
{
TypeDictionary.Add(t.ToString(), t);
}
}
void TCPS_ClientConnected(int ID, EndPoint Remote)
{
// Create a incoming queue for this connection
InQueueStruct iq = new InQueueStruct();
iq.Queue = new byte[MaxQueueSize];
iq.QueueSize = 0;
InQueue.Add(ID, iq);
}
void TCPS_Close(int ID)
{
// Remove queue
InQueue.Remove(ID);
}
void TCPS_DataReceived(int ID, byte[] data, int offset, int length)
{
// Copy new data to incoming queue
lock (InQueue[ID].QueueLockObject)
{
Array.Copy(data, offset, InQueue[ID].Queue, InQueue[ID].QueueSize, length);
InQueue[ID].QueueSize += length;
// Process incoming queue
ProcessQueue(ID);
}
}
private void ProcessQueue(int ID)
{
// This is just a temp implementation -- not so fast :)
InQueueStruct myIQS = InQueue[ID];
if (myIQS.QueueSize == 0)
return;
string receivedData = Encoding.ASCII.GetString(myIQS.Queue, 0, myIQS.QueueSize);
Debug.WriteLine("RAW: " + receivedData);
byte newLine = 10;
while (true)
{
bool ShouldProcess = false;
int lineEndPos = 0;
// Look for newline
for (int i = 0; i < myIQS.QueueSize; i++)
{
if (myIQS.Queue[i] == newLine)
{
ShouldProcess = true;
lineEndPos = i;
break;
}
}
// Process it?
if (!ShouldProcess)
return;
// Yes
string cmdLine = Encoding.ASCII.GetString(myIQS.Queue, 0, lineEndPos);
Debug.WriteLine("Command: " + cmdLine);
// Fix remaining queue in an inefficient way
byte[] newQueue = new byte[MaxQueueSize];
Array.Copy(myIQS.Queue, lineEndPos, newQueue, 0, myIQS.QueueSize - lineEndPos);
myIQS.Queue = newQueue;
myIQS.QueueSize -= (lineEndPos + 1);
// Now back to the command
string[] parts = cmdLine.Split(',');
if (parts.Length > 0)
{
string cmd = parts[0];
int paramCount = parts.Length - 1;
object[] param = null;
if (paramCount > 0)
{
// Process all parameters (decoding them from URL encoding)
param = new object[paramCount];
for (int i = 1; i < parts.Length; i++)
{
string[] spl;
spl = HttpUtility.UrlDecode(parts[i]).Split('|');
string t = spl[0];
param[i - 1] = Convert.ChangeType(spl[1], TypeLookup(t));
}
}
ReceiveCommand(ID, cmd, param);
}
}
}
private Type TypeLookup(string t)
{
Type ret = TypeDictionary[t];
if (ret != null)
return ret;
return typeof(object);
}
public void SendCommand(int ID, string Command, params object[] p)
{
// Call PacketFactory to have it create a packet for us
//string[] tmpP = new string[p.Length];
string tmpStr = Command;
for (int i = 0; i < p.Length; i++)
{
tmpStr += "," + p[i].GetType().ToString() + "|" + HttpUtility.UrlEncode(p[i].ToString()); // .Replace(",", "%44")
}
tmpStr += "\n";
byte[] byteData = Encoding.ASCII.GetBytes(tmpStr);
TCPS.Send(ID, byteData, 0, byteData.Length);
}
}
}
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