OpenSimMirror/OpenSim.RegionServer/SimClient.cs

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/*
Copyright (c) OpenSim project, http://osgrid.org/
*
* 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 <organization> 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 <copyright holder> ``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 <copyright holder> 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;
using System.Collections.Generic;
using libsecondlife;
using libsecondlife.Packets;
using Nwc.XmlRpc;
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using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Threading;
using System.Timers;
using OpenSim.Framework.Interfaces;
using OpenSim.Framework.Types;
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using OpenSim.Framework.Inventory;
using OpenSim.Framework.Utilities;
using OpenSim.world;
using OpenSim.Assets;
namespace OpenSim
{
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public delegate bool PacketMethod(SimClient simClient, Packet packet);
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/// <summary>
/// Handles new client connections
/// Constructor takes a single Packet and authenticates everything
/// </summary>
public partial class SimClient
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{
public LLUUID AgentID;
public LLUUID SessionID;
public LLUUID SecureSessionID = LLUUID.Zero;
public bool m_child;
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public uint CircuitCode;
public world.Avatar ClientAvatar;
private UseCircuitCodePacket cirpack;
public Thread ClientThread;
public EndPoint userEP;
public LLVector3 startpos;
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private BlockingQueue<QueItem> PacketQueue;
private Dictionary<uint, uint> PendingAcks = new Dictionary<uint, uint>();
private Dictionary<uint, Packet> NeedAck = new Dictionary<uint, Packet>();
//private Dictionary<LLUUID, AssetBase> UploadedAssets = new Dictionary<LLUUID, AssetBase>();
private System.Timers.Timer AckTimer;
private uint Sequence = 0;
private object SequenceLock = new object();
private const int MAX_APPENDED_ACKS = 10;
private const int RESEND_TIMEOUT = 4000;
private const int MAX_SEQUENCE = 0xFFFFFF;
private AgentAssetUpload UploadAssets;
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private LLUUID newAssetFolder = LLUUID.Zero;
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private bool debug = false;
private World m_world;
private Dictionary<uint, SimClient> m_clientThreads;
private AssetCache m_assetCache;
private IGridServer m_gridServer;
private IUserServer m_userServer = null;
private OpenSimNetworkHandler m_networkServer;
private InventoryCache m_inventoryCache;
public bool m_sandboxMode;
private int cachedtextureserial = 0;
private RegionInfo m_regionData;
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protected static Dictionary<PacketType, PacketMethod> PacketHandlers = new Dictionary<PacketType, PacketMethod>(); //Global/static handlers for all clients
protected Dictionary<PacketType, PacketMethod> m_packetHandlers = new Dictionary<PacketType, PacketMethod>(); //local handlers for this instance
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public IUserServer UserServer
{
set
{
this.m_userServer = value;
}
}
public SimClient(EndPoint remoteEP, UseCircuitCodePacket initialcirpack, World world, Dictionary<uint, SimClient> clientThreads, AssetCache assetCache, IGridServer gridServer, OpenSimNetworkHandler application, InventoryCache inventoryCache, bool sandboxMode, bool child, RegionInfo regionDat)
{
m_world = world;
m_clientThreads = clientThreads;
m_assetCache = assetCache;
m_gridServer = gridServer;
m_networkServer = application;
m_inventoryCache = inventoryCache;
m_sandboxMode = sandboxMode;
m_child = child;
m_regionData = regionDat;
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "OpenSimClient.cs - Started up new client thread to handle incoming request");
cirpack = initialcirpack;
userEP = remoteEP;
/* if (m_gridServer.GetName() == "Remote")
{
this.startpos = ((RemoteGridBase)m_gridServer).agentcircuits[initialcirpack.CircuitCode.Code].startpos;
}
else
{*/
this.startpos = new LLVector3(128, 128, m_world.Terrain[(int)128, (int)128] + 15.0f); // new LLVector3(128.0f, 128.0f, 60f);
//}
PacketQueue = new BlockingQueue<QueItem>();
this.UploadAssets = new AgentAssetUpload(this, m_assetCache, m_inventoryCache);
AckTimer = new System.Timers.Timer(500);
AckTimer.Elapsed += new ElapsedEventHandler(AckTimer_Elapsed);
AckTimer.Start();
this.RegisterLocalPacketHandlers();
ClientThread = new Thread(new ThreadStart(AuthUser));
ClientThread.IsBackground = true;
ClientThread.Start();
}
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# region Client Methods
public void UpgradeClient()
{
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "SimClient.cs:UpgradeClient() - upgrading child to full agent");
this.m_child = false;
this.m_world.RemoveViewerAgent(this);
if (!this.m_sandboxMode)
{
this.startpos = ((RemoteGridBase)m_gridServer).agentcircuits[CircuitCode].startpos;
((RemoteGridBase)m_gridServer).agentcircuits[CircuitCode].child = false;
}
this.InitNewClient();
}
public void DowngradeClient()
{
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "SimClient.cs:UpgradeClient() - changing full agent to child");
this.m_child = true;
this.m_world.RemoveViewerAgent(this);
this.m_world.AddViewerAgent(this);
}
public void KillClient()
{
KillObjectPacket kill = new KillObjectPacket();
kill.ObjectData = new KillObjectPacket.ObjectDataBlock[1];
kill.ObjectData[0] = new KillObjectPacket.ObjectDataBlock();
kill.ObjectData[0].ID = this.ClientAvatar.localid;
foreach (SimClient client in m_clientThreads.Values)
{
client.OutPacket(kill);
}
if (this.m_userServer != null)
{
this.m_inventoryCache.ClientLeaving(this.AgentID, this.m_userServer);
}
else
{
this.m_inventoryCache.ClientLeaving(this.AgentID, null);
}
m_world.RemoveViewerAgent(this);
m_clientThreads.Remove(this.CircuitCode);
m_networkServer.RemoveClientCircuit(this.CircuitCode);
this.ClientThread.Abort();
}
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#endregion
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# region Packet Handling
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public static bool AddPacketHandler(PacketType packetType, PacketMethod handler)
{
bool result = false;
lock (PacketHandlers)
{
if (!PacketHandlers.ContainsKey(packetType))
{
PacketHandlers.Add(packetType, handler);
result = true;
}
}
return result;
}
public bool AddLocalPacketHandler(PacketType packetType, PacketMethod handler)
{
bool result = false;
lock (m_packetHandlers)
{
if (!m_packetHandlers.ContainsKey(packetType))
{
m_packetHandlers.Add(packetType, handler);
result = true;
}
}
return result;
}
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protected virtual bool ProcessPacketMethod(Packet packet)
{
bool result = false;
bool found = false;
PacketMethod method;
if (m_packetHandlers.TryGetValue(packet.Type, out method))
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{
//there is a local handler for this packet type
result = method(this, packet);
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}
else
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{
//there is not a local handler so see if there is a Global handler
lock (PacketHandlers)
{
found = PacketHandlers.TryGetValue(packet.Type, out method);
}
if (found)
{
result = method(this, packet);
}
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}
return result;
}
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# endregion
# region Low Level Packet Methods
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private void ack_pack(Packet Pack)
{
if (Pack.Header.Reliable)
{
libsecondlife.Packets.PacketAckPacket ack_it = new PacketAckPacket();
ack_it.Packets = new PacketAckPacket.PacketsBlock[1];
ack_it.Packets[0] = new PacketAckPacket.PacketsBlock();
ack_it.Packets[0].ID = Pack.Header.Sequence;
ack_it.Header.Reliable = false;
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OutPacket(ack_it);
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}
/*
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if (Pack.Header.Reliable)
{
lock (PendingAcks)
{
uint sequence = (uint)Pack.Header.Sequence;
if (!PendingAcks.ContainsKey(sequence)) { PendingAcks[sequence] = sequence; }
}
}*/
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}
private void ResendUnacked()
{
int now = Environment.TickCount;
lock (NeedAck)
{
foreach (Packet packet in NeedAck.Values)
{
if ((now - packet.TickCount > RESEND_TIMEOUT) && (!packet.Header.Resent))
{
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.VERBOSE, "Resending " + packet.Type.ToString() + " packet, " +
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(now - packet.TickCount) + "ms have passed");
packet.Header.Resent = true;
OutPacket(packet);
}
}
}
}
private void SendAcks()
{
lock (PendingAcks)
{
if (PendingAcks.Count > 0)
{
if (PendingAcks.Count > 250)
{
// FIXME: Handle the odd case where we have too many pending ACKs queued up
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.VERBOSE, "Too many ACKs queued up!");
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return;
}
//OpenSim.Framework.Console.MainConsole.Instance.WriteLine("Sending PacketAck");
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int i = 0;
PacketAckPacket acks = new PacketAckPacket();
acks.Packets = new PacketAckPacket.PacketsBlock[PendingAcks.Count];
foreach (uint ack in PendingAcks.Values)
{
acks.Packets[i] = new PacketAckPacket.PacketsBlock();
acks.Packets[i].ID = ack;
i++;
}
acks.Header.Reliable = false;
OutPacket(acks);
PendingAcks.Clear();
}
}
}
private void AckTimer_Elapsed(object sender, ElapsedEventArgs ea)
{
SendAcks();
ResendUnacked();
}
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# endregion
#region Packet Queue Processing
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protected virtual void ProcessOutPacket(Packet Pack)
{
// Keep track of when this packet was sent out
Pack.TickCount = Environment.TickCount;
if (!Pack.Header.Resent)
{
// Set the sequence number
lock (SequenceLock)
{
if (Sequence >= MAX_SEQUENCE)
Sequence = 1;
else
Sequence++;
Pack.Header.Sequence = Sequence;
}
if (Pack.Header.Reliable) //DIRTY HACK
{
lock (NeedAck)
{
if (!NeedAck.ContainsKey(Pack.Header.Sequence))
{
try
{
NeedAck.Add(Pack.Header.Sequence, Pack);
}
catch (Exception e) // HACKY
{
e.ToString();
// Ignore
// Seems to throw a exception here occasionally
// of 'duplicate key' despite being locked.
// !?!?!?
}
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}
else
{
// Client.Log("Attempted to add a duplicate sequence number (" +
// packet.Header.Sequence + ") to the NeedAck dictionary for packet type " +
// packet.Type.ToString(), Helpers.LogLevel.Warning);
}
}
// Don't append ACKs to resent packets, in case that's what was causing the
// delivery to fail
if (!Pack.Header.Resent)
{
// Append any ACKs that need to be sent out to this packet
lock (PendingAcks)
{
if (PendingAcks.Count > 0 && PendingAcks.Count < MAX_APPENDED_ACKS &&
Pack.Type != PacketType.PacketAck &&
Pack.Type != PacketType.LogoutRequest)
{
Pack.Header.AckList = new uint[PendingAcks.Count];
int i = 0;
foreach (uint ack in PendingAcks.Values)
{
Pack.Header.AckList[i] = ack;
i++;
}
PendingAcks.Clear();
Pack.Header.AppendedAcks = true;
}
}
}
}
}
byte[] ZeroOutBuffer = new byte[4096];
byte[] sendbuffer;
sendbuffer = Pack.ToBytes();
try
{
if (Pack.Header.Zerocoded)
{
int packetsize = Helpers.ZeroEncode(sendbuffer, sendbuffer.Length, ZeroOutBuffer);
m_networkServer.SendPacketTo(ZeroOutBuffer, packetsize, SocketFlags.None, CircuitCode);//userEP);
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}
else
{
m_networkServer.SendPacketTo(sendbuffer, sendbuffer.Length, SocketFlags.None, CircuitCode); //userEP);
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}
}
catch (Exception)
{
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.MEDIUM, "OpenSimClient.cs:ProcessOutPacket() - WARNING: Socket exception occurred on connection " + userEP.ToString() + " - killing thread");
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ClientThread.Abort();
}
}
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public virtual void InPacket(Packet NewPack)
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{
// Handle appended ACKs
if (NewPack.Header.AppendedAcks)
{
lock (NeedAck)
{
foreach (uint ack in NewPack.Header.AckList)
{
NeedAck.Remove(ack);
}
}
}
// Handle PacketAck packets
if (NewPack.Type == PacketType.PacketAck)
{
PacketAckPacket ackPacket = (PacketAckPacket)NewPack;
lock (NeedAck)
{
foreach (PacketAckPacket.PacketsBlock block in ackPacket.Packets)
{
NeedAck.Remove(block.ID);
}
}
}
else if ((NewPack.Type == PacketType.StartPingCheck))
{
//reply to pingcheck
libsecondlife.Packets.StartPingCheckPacket startPing = (libsecondlife.Packets.StartPingCheckPacket)NewPack;
libsecondlife.Packets.CompletePingCheckPacket endPing = new CompletePingCheckPacket();
endPing.PingID.PingID = startPing.PingID.PingID;
OutPacket(endPing);
}
else
{
QueItem item = new QueItem();
item.Packet = NewPack;
item.Incoming = true;
this.PacketQueue.Enqueue(item);
}
}
public virtual void OutPacket(Packet NewPack)
{
QueItem item = new QueItem();
item.Packet = NewPack;
item.Incoming = false;
this.PacketQueue.Enqueue(item);
}
protected virtual void ClientLoop()
{
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "OpenSimClient.cs:ClientLoop() - Entered loop");
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while (true)
{
QueItem nextPacket = PacketQueue.Dequeue();
if (nextPacket.Incoming)
{
//is a incoming packet
ProcessInPacket(nextPacket.Packet);
}
else
{
//is a out going packet
ProcessOutPacket(nextPacket.Packet);
}
}
}
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#endregion
# region Setup
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protected virtual void InitNewClient()
{
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "OpenSimClient.cs:InitNewClient() - Adding viewer agent to world");
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m_world.AddViewerAgent(this);
world.Entity tempent = m_world.Entities[this.AgentID];
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this.ClientAvatar = (world.Avatar)tempent;
}
protected virtual void AuthUser()
{
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// AuthenticateResponse sessionInfo = m_gridServer.AuthenticateSession(cirpack.CircuitCode.SessionID, cirpack.CircuitCode.ID, cirpack.CircuitCode.Code);
AuthenticateResponse sessionInfo = this.m_networkServer.AuthenticateSession(cirpack.CircuitCode.SessionID, cirpack.CircuitCode.ID, cirpack.CircuitCode.Code);
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if (!sessionInfo.Authorised)
{
//session/circuit not authorised
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.NORMAL, "OpenSimClient.cs:AuthUser() - New user request denied to " + userEP.ToString());
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ClientThread.Abort();
}
else
{
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OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.NORMAL, "OpenSimClient.cs:AuthUser() - Got authenticated connection from " + userEP.ToString());
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//session is authorised
this.AgentID = cirpack.CircuitCode.ID;
this.SessionID = cirpack.CircuitCode.SessionID;
this.CircuitCode = cirpack.CircuitCode.Code;
InitNewClient(); //shouldn't be called here as we might be a child agent and not want a full avatar
this.ClientAvatar.firstname = sessionInfo.LoginInfo.First;
this.ClientAvatar.lastname = sessionInfo.LoginInfo.Last;
if (sessionInfo.LoginInfo.SecureSession != LLUUID.Zero)
{
this.SecureSessionID = sessionInfo.LoginInfo.SecureSession;
}
// Create Inventory, currently only works for sandbox mode
if (m_sandboxMode)
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{
this.SetupInventory(sessionInfo);
}
ClientLoop();
}
}
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# endregion
#region Inventory Creation
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private void SetupInventory(AuthenticateResponse sessionInfo)
{
AgentInventory inventory = null;
if (sessionInfo.LoginInfo.InventoryFolder != null)
{
inventory = this.CreateInventory(sessionInfo.LoginInfo.InventoryFolder);
if (sessionInfo.LoginInfo.BaseFolder != null)
{
if (!inventory.HasFolder(sessionInfo.LoginInfo.BaseFolder))
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{
m_inventoryCache.CreateNewInventoryFolder(this, sessionInfo.LoginInfo.BaseFolder);
}
this.newAssetFolder = sessionInfo.LoginInfo.BaseFolder;
AssetBase[] inventorySet = m_assetCache.CreateNewInventorySet(this.AgentID);
if (inventorySet != null)
{
for (int i = 0; i < inventorySet.Length; i++)
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{
if (inventorySet[i] != null)
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{
m_inventoryCache.AddNewInventoryItem(this, sessionInfo.LoginInfo.BaseFolder, inventorySet[i]);
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}
}
}
}
}
}
private AgentInventory CreateInventory(LLUUID baseFolder)
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{
AgentInventory inventory = null;
if (this.m_userServer != null)
{
// a user server is set so request the inventory from it
Console.WriteLine("getting inventory from user server");
inventory = m_inventoryCache.FetchAgentsInventory(this.AgentID, m_userServer);
}
else
{
inventory = new AgentInventory();
inventory.AgentID = this.AgentID;
inventory.CreateRootFolder(this.AgentID, false);
m_inventoryCache.AddNewAgentsInventory(inventory);
m_inventoryCache.CreateNewInventoryFolder(this, baseFolder);
}
return inventory;
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}
private void CreateInventoryItem(CreateInventoryItemPacket packet)
{
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if (!(packet.InventoryBlock.Type == 3 || packet.InventoryBlock.Type == 7))
{
System.Console.WriteLine("Attempted to create " + Util.FieldToString(packet.InventoryBlock.Name) + " in inventory. Unsupported type");
return;
}
//lets try this out with creating a notecard
AssetBase asset = new AssetBase();
asset.Name = Util.FieldToString(packet.InventoryBlock.Name);
asset.Description = Util.FieldToString(packet.InventoryBlock.Description);
asset.InvType = packet.InventoryBlock.InvType;
asset.Type = packet.InventoryBlock.Type;
asset.FullID = LLUUID.Random();
switch (packet.InventoryBlock.Type)
{
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case 7: // Notecard
asset.Data = new byte[0];
break;
case 3: // Landmark
String content;
content = "Landmark version 2\n";
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content += "region_id " + m_regionData.SimUUID + "\n";
String strPos = String.Format("%.2f %.2f %.2f>",
this.ClientAvatar.Pos.X,
this.ClientAvatar.Pos.Y,
this.ClientAvatar.Pos.Z);
content += "local_pos " + strPos + "\n";
asset.Data = (new System.Text.ASCIIEncoding()).GetBytes(content);
break;
default:
break;
}
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m_assetCache.AddAsset(asset);
m_inventoryCache.AddNewInventoryItem(this, packet.InventoryBlock.FolderID, asset);
}
#endregion
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#region Nested Classes
public class QueItem
{
public QueItem()
{
}
public Packet Packet;
public bool Incoming;
}
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#endregion
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}
}