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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 OpenSimulator 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;
using System.Collections.Generic;
using System.Net;
using System.Reflection;
using log4net;
using Nini.Config;
using Nwc.XmlRpc;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Framework.Servers;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using GridRegion = OpenSim.Services.Interfaces.GridRegion;
using PresenceInfo = OpenSim.Services.Interfaces.PresenceInfo;
using OpenSim.Services.Interfaces;
namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
{
public class MessageTransferModule : ISharedRegionModule, IMessageTransferModule
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private bool m_Enabled = false;
protected string m_MessageKey = String.Empty;
protected List<Scene> m_Scenes = new List<Scene>();
protected Dictionary<UUID, UUID> m_UserRegionMap = new Dictionary<UUID, UUID>();
public event UndeliveredMessage OnUndeliveredMessage;
private IPresenceService m_PresenceService;
protected IPresenceService PresenceService
{
get
{
if (m_PresenceService == null)
m_PresenceService = m_Scenes[0].RequestModuleInterface<IPresenceService>();
return m_PresenceService;
}
}
public virtual void Initialise(IConfigSource config)
{
IConfig cnf = config.Configs["Messaging"];
if (cnf != null)
{
if (cnf.GetString("MessageTransferModule",
"MessageTransferModule") != "MessageTransferModule")
{
return;
}
m_MessageKey = cnf.GetString("MessageKey", String.Empty);
}
m_log.Debug("[MESSAGE TRANSFER]: Module enabled");
m_Enabled = true;
}
public virtual void AddRegion(Scene scene)
{
if (!m_Enabled)
return;
lock (m_Scenes)
{
m_log.Debug("[MESSAGE TRANSFER]: Message transfer module active");
scene.RegisterModuleInterface<IMessageTransferModule>(this);
m_Scenes.Add(scene);
}
}
public virtual void PostInitialise()
{
if (!m_Enabled)
return;
MainServer.Instance.AddXmlRPCHandler(
"grid_instant_message", processXMLRPCGridInstantMessage);
}
public virtual void RegionLoaded(Scene scene)
{
}
public virtual void RemoveRegion(Scene scene)
{
if (!m_Enabled)
return;
lock (m_Scenes)
{
m_Scenes.Remove(scene);
}
}
public virtual void Close()
{
}
public virtual string Name
{
get { return "MessageTransferModule"; }
}
public virtual Type ReplaceableInterface
{
get { return null; }
}
public virtual void SendInstantMessage(GridInstantMessage im, MessageResultNotification result)
{
UUID toAgentID = new UUID(im.toAgentID);
// Try root avatar only first
foreach (Scene scene in m_Scenes)
{
if (scene.Entities.ContainsKey(toAgentID) &&
scene.Entities[toAgentID] is ScenePresence)
{
// m_log.DebugFormat(
// "[INSTANT MESSAGE]: Looking for root agent {0} in {1}",
// toAgentID.ToString(), scene.RegionInfo.RegionName);
ScenePresence user = (ScenePresence) scene.Entities[toAgentID];
if (!user.IsChildAgent)
{
// m_log.DebugFormat("[INSTANT MESSAGE]: Delivering to client");
user.ControllingClient.SendInstantMessage(im);
// Message sent
result(true);
return;
}
}
}
// try child avatar second
foreach (Scene scene in m_Scenes)
{
// m_log.DebugFormat(
// "[INSTANT MESSAGE]: Looking for child of {0} in {1}", toAgentID, scene.RegionInfo.RegionName);
if (scene.Entities.ContainsKey(toAgentID) &&
scene.Entities[toAgentID] is ScenePresence)
{
// Local message
ScenePresence user = (ScenePresence) scene.Entities[toAgentID];
// m_log.DebugFormat("[INSTANT MESSAGE]: Delivering to client");
user.ControllingClient.SendInstantMessage(im);
// Message sent
result(true);
return;
}
}
// m_log.DebugFormat("[INSTANT MESSAGE]: Delivering IM to {0} via XMLRPC", im.toAgentID);
SendGridInstantMessageViaXMLRPC(im, result);
return;
}
private void HandleUndeliveredMessage(GridInstantMessage im, MessageResultNotification result)
{
UndeliveredMessage handlerUndeliveredMessage = OnUndeliveredMessage;
// If this event has handlers, then an IM from an agent will be
// considered delivered. This will suppress the error message.
//
if (handlerUndeliveredMessage != null)
{
handlerUndeliveredMessage(im);
if (im.dialog == (byte)InstantMessageDialog.MessageFromAgent)
result(true);
else
result(false);
return;
}
//m_log.DebugFormat("[INSTANT MESSAGE]: Undeliverable");
result(false);
}
/// <summary>
/// Process a XMLRPC Grid Instant Message
/// </summary>
/// <param name="request">XMLRPC parameters
/// </param>
/// <returns>Nothing much</returns>
protected virtual XmlRpcResponse processXMLRPCGridInstantMessage(XmlRpcRequest request, IPEndPoint remoteClient)
{
bool successful = false;
// TODO: For now, as IMs seem to be a bit unreliable on OSGrid, catch all exception that
// happen here and aren't caught and log them.
try
{
// various rational defaults
UUID fromAgentID = UUID.Zero;
UUID toAgentID = UUID.Zero;
UUID imSessionID = UUID.Zero;
uint timestamp = 0;
string fromAgentName = "";
string message = "";
byte dialog = (byte)0;
bool fromGroup = false;
byte offline = (byte)0;
uint ParentEstateID=0;
Vector3 Position = Vector3.Zero;
UUID RegionID = UUID.Zero ;
byte[] binaryBucket = new byte[0];
float pos_x = 0;
float pos_y = 0;
float pos_z = 0;
//m_log.Info("Processing IM");
Hashtable requestData = (Hashtable)request.Params[0];
// Check if it's got all the data
if (requestData.ContainsKey("from_agent_id")
&& requestData.ContainsKey("to_agent_id") && requestData.ContainsKey("im_session_id")
&& requestData.ContainsKey("timestamp") && requestData.ContainsKey("from_agent_name")
&& requestData.ContainsKey("message") && requestData.ContainsKey("dialog")
&& requestData.ContainsKey("from_group")
&& requestData.ContainsKey("offline") && requestData.ContainsKey("parent_estate_id")
&& requestData.ContainsKey("position_x") && requestData.ContainsKey("position_y")
&& requestData.ContainsKey("position_z") && requestData.ContainsKey("region_id")
&& requestData.ContainsKey("binary_bucket"))
{
if (m_MessageKey != String.Empty)
{
XmlRpcResponse error_resp = new XmlRpcResponse();
Hashtable error_respdata = new Hashtable();
error_respdata["success"] = "FALSE";
error_resp.Value = error_respdata;
if (!requestData.Contains("message_key"))
return error_resp;
if (m_MessageKey != (string)requestData["message_key"])
return error_resp;
}
// Do the easy way of validating the UUIDs
UUID.TryParse((string)requestData["from_agent_id"], out fromAgentID);
UUID.TryParse((string)requestData["to_agent_id"], out toAgentID);
UUID.TryParse((string)requestData["im_session_id"], out imSessionID);
UUID.TryParse((string)requestData["region_id"], out RegionID);
try
{
timestamp = (uint)Convert.ToInt32((string)requestData["timestamp"]);
}
catch (ArgumentException)
{
}
catch (FormatException)
{
}
catch (OverflowException)
{
}
fromAgentName = (string)requestData["from_agent_name"];
message = (string)requestData["message"];
if (message == null)
message = string.Empty;
// Bytes don't transfer well over XMLRPC, so, we Base64 Encode them.
string requestData1 = (string)requestData["dialog"];
if (string.IsNullOrEmpty(requestData1))
{
dialog = 0;
}
else
{
byte[] dialogdata = Convert.FromBase64String(requestData1);
dialog = dialogdata[0];
}
if ((string)requestData["from_group"] == "TRUE")
fromGroup = true;
string requestData2 = (string)requestData["offline"];
if (String.IsNullOrEmpty(requestData2))
{
offline = 0;
}
else
{
byte[] offlinedata = Convert.FromBase64String(requestData2);
offline = offlinedata[0];
}
try
{
ParentEstateID = (uint)Convert.ToInt32((string)requestData["parent_estate_id"]);
}
catch (ArgumentException)
{
}
catch (FormatException)
{
}
catch (OverflowException)
{
}
try
{
pos_x = (uint)Convert.ToInt32((string)requestData["position_x"]);
}
catch (ArgumentException)
{
}
catch (FormatException)
{
}
catch (OverflowException)
{
}
try
{
pos_y = (uint)Convert.ToInt32((string)requestData["position_y"]);
}
catch (ArgumentException)
{
}
catch (FormatException)
{
}
catch (OverflowException)
{
}
try
{
pos_z = (uint)Convert.ToInt32((string)requestData["position_z"]);
}
catch (ArgumentException)
{
}
catch (FormatException)
{
}
catch (OverflowException)
{
}
Position = new Vector3(pos_x, pos_y, pos_z);
string requestData3 = (string)requestData["binary_bucket"];
if (string.IsNullOrEmpty(requestData3))
{
binaryBucket = new byte[0];
}
else
{
binaryBucket = Convert.FromBase64String(requestData3);
}
// Create a New GridInstantMessageObject the the data
GridInstantMessage gim = new GridInstantMessage();
gim.fromAgentID = fromAgentID.Guid;
gim.fromAgentName = fromAgentName;
gim.fromGroup = fromGroup;
gim.imSessionID = imSessionID.Guid;
gim.RegionID = UUID.Zero.Guid; // RegionID.Guid;
gim.timestamp = timestamp;
gim.toAgentID = toAgentID.Guid;
gim.message = message;
gim.dialog = dialog;
gim.offline = offline;
gim.ParentEstateID = ParentEstateID;
gim.Position = Position;
gim.binaryBucket = binaryBucket;
// Trigger the Instant message in the scene.
foreach (Scene scene in m_Scenes)
{
if (scene.Entities.ContainsKey(toAgentID) &&
scene.Entities[toAgentID] is ScenePresence)
{
ScenePresence user =
(ScenePresence)scene.Entities[toAgentID];
if (!user.IsChildAgent)
{
scene.EventManager.TriggerIncomingInstantMessage(gim);
successful = true;
}
}
}
if (!successful)
{
// If the message can't be delivered to an agent, it
// is likely to be a group IM. On a group IM, the
// imSessionID = toAgentID = group id. Raise the
// unhandled IM event to give the groups module
// a chance to pick it up. We raise that in a random
// scene, since the groups module is shared.
//
m_Scenes[0].EventManager.TriggerUnhandledInstantMessage(gim);
}
}
}
catch (Exception e)
{
m_log.Error("[INSTANT MESSAGE]: Caught unexpected exception:", e);
successful = false;
}
//Send response back to region calling if it was successful
// calling region uses this to know when to look up a user's location again.
XmlRpcResponse resp = new XmlRpcResponse();
Hashtable respdata = new Hashtable();
if (successful)
respdata["success"] = "TRUE";
else
respdata["success"] = "FALSE";
resp.Value = respdata;
return resp;
}
private delegate void GridInstantMessageDelegate(GridInstantMessage im, MessageResultNotification result);
private class GIM {
public GridInstantMessage im;
public MessageResultNotification result;
};
private Queue<GIM> pendingInstantMessages = new Queue<GIM>();
private int numInstantMessageThreads = 0;
private void SendGridInstantMessageViaXMLRPC(GridInstantMessage im, MessageResultNotification result)
{
lock (pendingInstantMessages) {
if (numInstantMessageThreads >= 4) {
GIM gim = new GIM();
gim.im = im;
gim.result = result;
pendingInstantMessages.Enqueue(gim);
} else {
++ numInstantMessageThreads;
//m_log.DebugFormat("[SendGridInstantMessageViaXMLRPC]: ++numInstantMessageThreads={0}", numInstantMessageThreads);
GridInstantMessageDelegate d = SendGridInstantMessageViaXMLRPCAsyncMain;
d.BeginInvoke(im, result, GridInstantMessageCompleted, d);
}
}
}
private void GridInstantMessageCompleted(IAsyncResult iar)
{
GridInstantMessageDelegate d = (GridInstantMessageDelegate)iar.AsyncState;
d.EndInvoke(iar);
}
/// <summary>
/// Recursive SendGridInstantMessage over XMLRPC method.
/// This is called from within a dedicated thread.
/// The first time this is called, prevRegionHandle will be 0 Subsequent times this is called from
/// itself, prevRegionHandle will be the last region handle that we tried to send.
/// If the handles are the same, we look up the user's location using the grid.
/// If the handles are still the same, we end. The send failed.
/// </summary>
/// <param name="prevRegionHandle">
/// Pass in 0 the first time this method is called. It will be called recursively with the last
/// regionhandle tried
/// </param>
private void SendGridInstantMessageViaXMLRPCAsyncMain(GridInstantMessage im, MessageResultNotification result)
{
GIM gim;
do {
try {
SendGridInstantMessageViaXMLRPCAsync(im, result, UUID.Zero);
} catch (Exception e) {
m_log.Error("[SendGridInstantMessageViaXMLRPC]: exception " + e.Message);
}
lock (pendingInstantMessages) {
if (pendingInstantMessages.Count > 0) {
gim = pendingInstantMessages.Dequeue();
im = gim.im;
result = gim.result;
} else {
gim = null;
-- numInstantMessageThreads;
//m_log.DebugFormat("[SendGridInstantMessageViaXMLRPC]: --numInstantMessageThreads={0}", numInstantMessageThreads);
}
}
} while (gim != null);
}
private void SendGridInstantMessageViaXMLRPCAsync(GridInstantMessage im, MessageResultNotification result, UUID prevRegionID)
{
UUID toAgentID = new UUID(im.toAgentID);
PresenceInfo upd = null;
bool lookupAgent = false;
lock (m_UserRegionMap)
{
if (m_UserRegionMap.ContainsKey(toAgentID))
{
upd = new PresenceInfo();
upd.RegionID = m_UserRegionMap[toAgentID];
// We need to compare the current regionhandle with the previous region handle
// or the recursive loop will never end because it will never try to lookup the agent again
if (prevRegionID == upd.RegionID)
{
lookupAgent = true;
}
}
else
{
lookupAgent = true;
}
}
// Are we needing to look-up an agent?
if (lookupAgent)
{
// Non-cached user agent lookup.
PresenceInfo[] presences = PresenceService.GetAgents(new string[] { toAgentID.ToString() });
if (presences != null && presences.Length > 0)
{
foreach (PresenceInfo p in presences)
{
if (p.RegionID != UUID.Zero)
{
upd = p;
break;
}
}
}
if (upd != null)
{
// check if we've tried this before..
// This is one way to end the recursive loop
//
if (upd.RegionID == prevRegionID)
{
// m_log.Error("[GRID INSTANT MESSAGE]: Unable to deliver an instant message");
HandleUndeliveredMessage(im, result);
return;
}
}
else
{
// m_log.Error("[GRID INSTANT MESSAGE]: Unable to deliver an instant message");
HandleUndeliveredMessage(im, result);
return;
}
}
if (upd != null)
{
GridRegion reginfo = m_Scenes[0].GridService.GetRegionByUUID(UUID.Zero,
upd.RegionID);
if (reginfo != null)
{
Hashtable msgdata = ConvertGridInstantMessageToXMLRPC(im);
// Not actually used anymore, left in for compatibility
// Remove at next interface change
//
msgdata["region_handle"] = 0;
bool imresult = doIMSending(reginfo, msgdata);
if (imresult)
{
// IM delivery successful, so store the Agent's location in our local cache.
lock (m_UserRegionMap)
{
if (m_UserRegionMap.ContainsKey(toAgentID))
{
m_UserRegionMap[toAgentID] = upd.RegionID;
}
else
{
m_UserRegionMap.Add(toAgentID, upd.RegionID);
}
}
result(true);
}
else
{
// try again, but lookup user this time.
// Warning, this must call the Async version
// of this method or we'll be making thousands of threads
// The version within the spawned thread is SendGridInstantMessageViaXMLRPCAsync
// The version that spawns the thread is SendGridInstantMessageViaXMLRPC
// This is recursive!!!!!
SendGridInstantMessageViaXMLRPCAsync(im, result,
upd.RegionID);
}
}
else
{
m_log.WarnFormat("[GRID INSTANT MESSAGE]: Unable to find region {0}", upd.RegionID);
HandleUndeliveredMessage(im, result);
}
}
else
{
HandleUndeliveredMessage(im, result);
}
}
/// <summary>
/// This actually does the XMLRPC Request
/// </summary>
/// <param name="reginfo">RegionInfo we pull the data out of to send the request to</param>
/// <param name="xmlrpcdata">The Instant Message data Hashtable</param>
/// <returns>Bool if the message was successfully delivered at the other side.</returns>
protected virtual bool doIMSending(GridRegion reginfo, Hashtable xmlrpcdata)
{
ArrayList SendParams = new ArrayList();
SendParams.Add(xmlrpcdata);
XmlRpcRequest GridReq = new XmlRpcRequest("grid_instant_message", SendParams);
try
{
XmlRpcResponse GridResp = GridReq.Send(reginfo.ServerURI, 3000);
Hashtable responseData = (Hashtable)GridResp.Value;
if (responseData.ContainsKey("success"))
{
if ((string)responseData["success"] == "TRUE")
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
catch (WebException e)
{
m_log.ErrorFormat("[GRID INSTANT MESSAGE]: Error sending message to {0} the host didn't respond " + e.ToString(), reginfo.ServerURI.ToString());
}
return false;
}
/// <summary>
/// Get ulong region handle for region by it's Region UUID.
/// We use region handles over grid comms because there's all sorts of free and cool caching.
/// </summary>
/// <param name="regionID">UUID of region to get the region handle for</param>
/// <returns></returns>
// private virtual ulong getLocalRegionHandleFromUUID(UUID regionID)
// {
// ulong returnhandle = 0;
//
// lock (m_Scenes)
// {
// foreach (Scene sn in m_Scenes)
// {
// if (sn.RegionInfo.RegionID == regionID)
// {
// returnhandle = sn.RegionInfo.RegionHandle;
// break;
// }
// }
// }
// return returnhandle;
// }
/// <summary>
/// Takes a GridInstantMessage and converts it into a Hashtable for XMLRPC
/// </summary>
/// <param name="msg">The GridInstantMessage object</param>
/// <returns>Hashtable containing the XMLRPC request</returns>
protected virtual Hashtable ConvertGridInstantMessageToXMLRPC(GridInstantMessage msg)
{
Hashtable gim = new Hashtable();
gim["from_agent_id"] = msg.fromAgentID.ToString();
// Kept for compatibility
gim["from_agent_session"] = UUID.Zero.ToString();
gim["to_agent_id"] = msg.toAgentID.ToString();
gim["im_session_id"] = msg.imSessionID.ToString();
gim["timestamp"] = msg.timestamp.ToString();
gim["from_agent_name"] = msg.fromAgentName;
gim["message"] = msg.message;
byte[] dialogdata = new byte[1];dialogdata[0] = msg.dialog;
gim["dialog"] = Convert.ToBase64String(dialogdata,Base64FormattingOptions.None);
if (msg.fromGroup)
gim["from_group"] = "TRUE";
else
gim["from_group"] = "FALSE";
byte[] offlinedata = new byte[1]; offlinedata[0] = msg.offline;
gim["offline"] = Convert.ToBase64String(offlinedata, Base64FormattingOptions.None);
gim["parent_estate_id"] = msg.ParentEstateID.ToString();
gim["position_x"] = msg.Position.X.ToString();
gim["position_y"] = msg.Position.Y.ToString();
gim["position_z"] = msg.Position.Z.ToString();
gim["region_id"] = msg.RegionID.ToString();
gim["binary_bucket"] = Convert.ToBase64String(msg.binaryBucket,Base64FormattingOptions.None);
if (m_MessageKey != String.Empty)
gim["message_key"] = m_MessageKey;
return gim;
}
}
}
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