588 lines
25 KiB
C#
588 lines
25 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.IO;
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using System.Net;
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using System.Text;
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using System.Collections.Generic;
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using System.Reflection;
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using Mono.Addins;
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using OpenSim.Framework;
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using OpenSim.Framework.Servers.HttpServer;
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using OpenSim.Region.Framework.Interfaces;
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using OpenSim.Region.Framework.Scenes;
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using Caps = OpenSim.Framework.Capabilities.Caps;
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using OpenMetaverse;
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using OpenMetaverse.StructuredData;
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using OSDMap = OpenMetaverse.StructuredData.OSDMap;
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using log4net;
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using Nini.Config;
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[assembly: Addin("WebRtcVoiceRegionModule", "1.0")]
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[assembly: AddinDependency("OpenSim.Region.Framework", OpenSim.VersionInfo.VersionNumber)]
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namespace osWebRtcVoice
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{
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/// <summary>
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/// This module provides the WebRTC voice interface for viewer clients..
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///
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/// In particular, it provides the following capabilities:
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/// ProvisionVoiceAccountRequest, VoiceSignalingRequest, and ParcelVoiceInfoRequest.
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/// which are the user interface to the voice service.
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///
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/// Initially, when the user connects to the region, the region feature "VoiceServiceType" is
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/// set to "webrtc" and the capabilities that support voice are enabled.
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/// The capabilities then pass the user request information to the IWebRtcVoiceService interface
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/// that has been registered for the reqion.
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/// </summary>
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[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "RegionVoiceModule")]
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public class WebRtcVoiceRegionModule : ISharedRegionModule
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{
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private static readonly string logHeader = "[REGION WEBRTC VOICE]";
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private bool _MessageDetails = false;
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// Control info
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private static bool m_Enabled = false;
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private readonly Dictionary<string, string> m_UUIDName = new();
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private Dictionary<string, string> m_ParcelAddress = new();
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private IConfig m_Config;
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// ISharedRegionModule.Initialize
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public void Initialise(IConfigSource config)
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{
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m_Config = config.Configs["WebRtcVoice"];
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if (m_Config is not null)
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{
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m_Enabled = m_Config.GetBoolean("Enabled", false);
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if (m_Enabled)
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{
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_MessageDetails = m_Config.GetBoolean("MessageDetails", false);
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m_log.Info($"{logHeader}: enabled");
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}
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}
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}
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// ISharedRegionModule.PostInitialize
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public void PostInitialise()
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{
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}
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// ISharedRegionModule.AddRegion
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public void AddRegion(Scene scene)
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{
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// todo register module to get parcels changes etc
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}
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// ISharedRegionModule.RemoveRegion
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public void RemoveRegion(Scene scene)
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{
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}
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// ISharedRegionModule.RegionLoaded
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public void RegionLoaded(Scene scene)
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{
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if (m_Enabled)
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{
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scene.EventManager.OnRegisterCaps += delegate (UUID agentID, Caps caps)
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{
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OnRegisterCaps(scene, agentID, caps);
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};
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ISimulatorFeaturesModule simFeatures = scene.RequestModuleInterface<ISimulatorFeaturesModule>();
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simFeatures?.AddFeature("VoiceServerType", OSD.FromString("webrtc"));
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}
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}
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// ISharedRegionModule.Close
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public void Close()
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{
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}
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// ISharedRegionModule.Name
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public string Name
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{
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get { return "RegionVoiceModule"; }
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}
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// ISharedRegionModule.ReplaceableInterface
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public Type ReplaceableInterface
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{
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get { return null; }
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}
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// <summary>
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// OnRegisterCaps is invoked via the scene.EventManager
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// everytime OpenSim hands out capabilities to a client
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// (login, region crossing). We contribute three capabilities to
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// the set of capabilities handed back to the client:
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// ProvisionVoiceAccountRequest, VoiceSignalingRequest, and ParcelVoiceInfoRequest.
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//
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// ProvisionVoiceAccountRequest allows the client to obtain
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// voice communication information the the avater.
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//
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// VoiceSignalingRequest: Used for trickling ICE candidates.
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//
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// ChatSessionRequest
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//
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// Note that OnRegisterCaps is called here via a closure
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// delegate containing the scene of the respective region (see
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// Initialise()).
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// </summary>
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public void OnRegisterCaps(Scene scene, UUID agentID, Caps caps)
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{
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m_log.Debug(
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$"{logHeader}: OnRegisterCaps() called with agentID {agentID} caps {caps} in scene {scene.RegionInfo.RegionName}");
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caps.RegisterSimpleHandler("ProvisionVoiceAccountRequest",
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new SimpleStreamHandler("/" + UUID.Random(), (IOSHttpRequest httpRequest, IOSHttpResponse httpResponse) =>
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{
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ProvisionVoiceAccountRequest(httpRequest, httpResponse, agentID, scene);
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}));
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caps.RegisterSimpleHandler("VoiceSignalingRequest",
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new SimpleStreamHandler("/" + UUID.Random(), (IOSHttpRequest httpRequest, IOSHttpResponse httpResponse) =>
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{
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VoiceSignalingRequest(httpRequest, httpResponse, agentID, scene);
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}));
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caps.RegisterSimpleHandler("ChatSessionRequest",
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new SimpleStreamHandler("/" + UUID.Random(), (IOSHttpRequest httpRequest, IOSHttpResponse httpResponse) =>
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{
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ChatSessionRequest(httpRequest, httpResponse, agentID, scene);
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}));
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}
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/// <summary>
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/// Callback for a client request for Voice Account Details
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/// </summary>
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/// <param name="scene">current scene object of the client</param>
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/// <param name="request"></param>
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/// <param name="path"></param>
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/// <param name="param"></param>
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/// <param name="agentID"></param>
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/// <param name="caps"></param>
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/// <returns></returns>
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public void ProvisionVoiceAccountRequest(IOSHttpRequest request, IOSHttpResponse response, UUID agentID, Scene scene)
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{
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// Get the voice service. If it doesn't exist, return an error.
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IWebRtcVoiceService voiceService = scene.RequestModuleInterface<IWebRtcVoiceService>();
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if (voiceService is null)
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{
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m_log.Error($"{logHeader}[ProvisionVoice]: no voice service not loaded");
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response.StatusCode = (int)HttpStatusCode.NotFound;
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return;
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}
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if(request.HttpMethod != "POST")
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{
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m_log.DebugFormat($"[{logHeader}][ProvisionVoice]: Not a POST request. Agent={agentID}");
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response.StatusCode = (int)HttpStatusCode.NotFound;
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return;
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}
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// Deserialize the request. Convert the LLSDXml to OSD for our use
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OSDMap map = BodyToMap(request, "ProvisionVoiceAccountRequest");
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if (map is null)
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{
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m_log.Error($"{logHeader}[ProvisionVoice]: No request data found. Agent={agentID}");
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response.StatusCode = (int)HttpStatusCode.NoContent;
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return;
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}
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// Make sure the request is for WebRtc voice
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if (map.TryGetValue("voice_server_type", out OSD vstosd))
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{
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if (vstosd is OSDString vst && !((string)vst).Equals("webrtc", StringComparison.OrdinalIgnoreCase))
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{
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m_log.Warn($"{logHeader}[ProvisionVoice]: voice_server_type is not 'webrtc'. Request: {map}");
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response.RawBuffer = Util.UTF8.GetBytes("<llsd><undef /></llsd>");
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response.StatusCode = (int)HttpStatusCode.OK;
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return;
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}
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}
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if (_MessageDetails) m_log.DebugFormat($"{logHeader}[ProvisionVoice]: request: {map}");
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// The checks passed. Send the request to the voice service.
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OSDMap resp = voiceService.ProvisionVoiceAccountRequest(map, agentID, scene.RegionInfo.RegionID).Result;
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if(resp is not null)
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{
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if (_MessageDetails) m_log.DebugFormat($"{logHeader}[ProvisionVoice]: response: {resp}");
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// TODO: check for errors and package the response
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// Convert the OSD to LLSDXml for the response
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string xmlResp = OSDParser.SerializeLLSDXmlString(resp);
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response.RawBuffer = Util.UTF8.GetBytes(xmlResp);
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response.StatusCode = (int)HttpStatusCode.OK;
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}
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else
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{
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m_log.DebugFormat($"{logHeader}[ProvisionVoice]: got null response");
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response.StatusCode = (int)HttpStatusCode.OK;
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}
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return;
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}
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public void VoiceSignalingRequest(IOSHttpRequest request, IOSHttpResponse response, UUID agentID, Scene scene)
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{
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IWebRtcVoiceService voiceService = scene.RequestModuleInterface<IWebRtcVoiceService>();
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if (voiceService is null)
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{
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m_log.ErrorFormat($"{logHeader}[VoiceSignalingRequest]: avatar \"{agentID}\": no voice service");
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response.StatusCode = (int)HttpStatusCode.NotFound;
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return;
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}
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if(request.HttpMethod != "POST")
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{
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m_log.Error($"[{logHeader}][VoiceSignaling]: Not a POST request. Agent={agentID}");
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response.StatusCode = (int)HttpStatusCode.NotFound;
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return;
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}
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// Deserialize the request. Convert the LLSDXml to OSD for our use
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OSDMap map = BodyToMap(request, "VoiceSignalingRequest");
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if (map is null)
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{
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m_log.ErrorFormat($"{logHeader}[VoiceSignalingRequest]: No request data found. Agent={agentID}");
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response.StatusCode = (int)HttpStatusCode.NoContent;
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return;
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}
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// Make sure the request is for WebRTC voice
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if (map.TryGetValue("voice_server_type", out OSD vstosd))
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{
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if (vstosd is OSDString vst && !((string)vst).Equals("webrtc", StringComparison.OrdinalIgnoreCase))
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{
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response.RawBuffer = Util.UTF8.GetBytes("<llsd><undef /></llsd>");
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return;
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}
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}
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OSDMap resp = voiceService.VoiceSignalingRequest(map, agentID, scene.RegionInfo.RegionID).Result;
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if (_MessageDetails) m_log.Debug($"{logHeader}[VoiceSignalingRequest]: Response: {resp}");
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// TODO: check for errors and package the response
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response.StatusCode = (int)HttpStatusCode.OK;
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response.RawBuffer = Util.UTF8.GetBytes("<llsd><undef /></llsd>");
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return;
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}
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/// <summary>
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/// Callback for a client request for ChatSessionRequest.
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/// The viewer sends this request when the user tries to start a P2P text or voice session
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/// with another user. We need to generate a new session ID and return it to the client.
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/// </summary>
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/// <param name="request"></param>
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/// <param name="response"></param>
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/// <param name="agentID"></param>
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/// <param name="scene"></param>
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public void ChatSessionRequest(IOSHttpRequest request, IOSHttpResponse response, UUID agentID, Scene scene)
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{
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m_log.DebugFormat("{0}: ChatSessionRequest received for agent {1} in scene {2}", logHeader, agentID, scene.RegionInfo.RegionName);
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if (request.HttpMethod != "POST")
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{
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response.StatusCode = (int)HttpStatusCode.NotFound;
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return;
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}
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if (!scene.TryGetScenePresence(agentID, out ScenePresence sp) || sp.IsDeleted)
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{
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m_log.Warn($"{logHeader} ChatSessionRequest: scene presence not found or deleted for agent {agentID}");
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response.StatusCode = (int)HttpStatusCode.NotFound;
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return;
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}
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OSDMap reqmap = BodyToMap(request, "[ChatSessionRequest]");
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if (reqmap is null)
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{
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m_log.Warn($"{logHeader} ChatSessionRequest: message body not parsable in request for agent {agentID}");
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response.StatusCode = (int)HttpStatusCode.NoContent;
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return;
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}
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m_log.Debug($"{logHeader} ChatSessionRequest");
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if (!reqmap.TryGetString("method", out string method))
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{
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m_log.Warn($"{logHeader} ChatSessionRequest: missing required 'method' field in request for agent {agentID}");
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response.StatusCode = (int)HttpStatusCode.NotFound;
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return;
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}
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if (!reqmap.TryGetUUID("session-id", out UUID sessionID))
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{
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m_log.Warn($"{logHeader} ChatSessionRequest: missing required 'session-id' field in request for agent {agentID}");
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response.StatusCode = (int)HttpStatusCode.NotFound;
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return;
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}
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switch (method.ToLower())
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{
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// Several different method requests that we don't know how to handle.
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// Just return OK for now.
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case "decline p2p voice":
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case "decline invitation":
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case "start conference":
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case "fetch history":
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response.StatusCode = (int)HttpStatusCode.OK;
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break;
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// Asking to start a P2P voice session. We need to generate a new session ID and return
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// it to the client in a ChatterBoxSessionStartReply event.
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case "start p2p voice":
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UUID newSessionID;
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if (reqmap.TryGetUUID("params", out UUID otherID))
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newSessionID = new(otherID.ulonga ^ agentID.ulonga, otherID.ulongb ^ agentID.ulongb);
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else
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newSessionID = UUID.Random();
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IEventQueue queue = scene.RequestModuleInterface<IEventQueue>();
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if (queue is null)
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{
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m_log.ErrorFormat("{0}: no event queue for scene {1}", logHeader, scene.RegionInfo.RegionName);
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response.StatusCode = (int)HttpStatusCode.InternalServerError;
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}
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else
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{
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queue.ChatterBoxSessionStartReply(
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newSessionID,
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sp.Name,
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2,
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false,
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true,
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sessionID,
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true,
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string.Empty,
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agentID);
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response.StatusCode = (int)HttpStatusCode.OK;
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}
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break;
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default:
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response.StatusCode = (int)HttpStatusCode.BadRequest;
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break;
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}
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}
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// NOTE NOTE!! This is code from the FreeSwitch module. It is not clear if this is correct for WebRtc.
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/// <summary>
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/// Callback for a client request for ParcelVoiceInfo
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/// </summary>
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/// <param name="scene">current scene object of the client</param>
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/// <param name="request"></param>
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/// <param name="path"></param>
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/// <param name="param"></param>
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/// <param name="agentID"></param>
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/// <param name="caps"></param>
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/// <returns></returns>
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public void ParcelVoiceInfoRequest(IOSHttpRequest request, IOSHttpResponse response, UUID agentID, Scene scene)
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{
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if (request.HttpMethod != "POST")
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{
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response.StatusCode = (int)HttpStatusCode.NotFound;
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return;
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}
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response.StatusCode = (int)HttpStatusCode.OK;
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m_log.DebugFormat(
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"{0}[PARCELVOICE]: ParcelVoiceInfoRequest() on {1} for {2}",
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logHeader, scene.RegionInfo.RegionName, agentID);
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ScenePresence avatar = scene.GetScenePresence(agentID);
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if (avatar == null)
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{
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response.RawBuffer = Util.UTF8.GetBytes("<llsd>undef</llsd>");
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return;
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}
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string avatarName = avatar.Name;
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// - check whether we have a region channel in our cache
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// - if not:
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// create it and cache it
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// - send it to the client
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// - send channel_uri: as "sip:regionID@m_sipDomain"
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try
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{
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string channelUri;
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if (null == scene.LandChannel)
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{
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m_log.ErrorFormat("region \"{0}\": avatar \"{1}\": land data not yet available",
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scene.RegionInfo.RegionName, avatarName);
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response.RawBuffer = Util.UTF8.GetBytes("<llsd>undef</llsd>");
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return;
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}
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// get channel_uri: check first whether estate
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// settings allow voice, then whether parcel allows
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// voice, if all do retrieve or obtain the parcel
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// voice channel
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LandData land = scene.GetLandData(avatar.AbsolutePosition);
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// TODO: EstateSettings don't seem to get propagated...
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if (!scene.RegionInfo.EstateSettings.AllowVoice)
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{
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m_log.DebugFormat("{0}[PARCELVOICE]: region \"{1}\": voice not enabled in estate settings",
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logHeader, scene.RegionInfo.RegionName);
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channelUri = String.Empty;
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}
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else
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if (!scene.RegionInfo.EstateSettings.TaxFree && (land.Flags & (uint)ParcelFlags.AllowVoiceChat) == 0)
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{
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channelUri = String.Empty;
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}
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else
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{
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channelUri = ChannelUri(scene, land);
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}
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// fast foward encode
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osUTF8 lsl = LLSDxmlEncode2.Start(512);
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LLSDxmlEncode2.AddMap(lsl);
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LLSDxmlEncode2.AddElem("parcel_local_id", land.LocalID, lsl);
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LLSDxmlEncode2.AddElem("region_name", scene.Name, lsl);
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LLSDxmlEncode2.AddMap("voice_credentials", lsl);
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LLSDxmlEncode2.AddElem("channel_uri", channelUri, lsl);
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//LLSDxmlEncode2.AddElem("channel_credentials", channel_credentials, lsl);
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LLSDxmlEncode2.AddEndMap(lsl);
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LLSDxmlEncode2.AddEndMap(lsl);
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response.RawBuffer = LLSDxmlEncode2.EndToBytes(lsl);
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}
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catch (Exception e)
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{
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m_log.ErrorFormat("{0}[PARCELVOICE]: region \"{1}\": avatar \"{2}\": {3}, retry later",
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logHeader, scene.RegionInfo.RegionName, avatarName, e.Message);
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m_log.DebugFormat("{0}[PARCELVOICE]: region \"{1}\": avatar \"{2}\": {3} failed",
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logHeader, scene.RegionInfo.RegionName, avatarName, e.ToString());
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response.RawBuffer = Util.UTF8.GetBytes("<llsd>undef</llsd>");
|
|
}
|
|
}
|
|
|
|
// NOTE NOTE!! This is code from the FreeSwitch module. It is not clear if this is correct for WebRtc.
|
|
// Not sure what this Uri is for. Is this FreeSwitch specific?
|
|
// TODO: is this useful for WebRtc?
|
|
private string ChannelUri(Scene scene, LandData land)
|
|
{
|
|
string channelUri = null;
|
|
|
|
string landUUID;
|
|
string landName;
|
|
|
|
// Create parcel voice channel. If no parcel exists, then the voice channel ID is the same
|
|
// as the directory ID. Otherwise, it reflects the parcel's ID.
|
|
|
|
lock (m_ParcelAddress)
|
|
{
|
|
if (m_ParcelAddress.ContainsKey(land.GlobalID.ToString()))
|
|
{
|
|
m_log.DebugFormat("{0}: parcel id {1}: using sip address {2}",
|
|
logHeader, land.GlobalID, m_ParcelAddress[land.GlobalID.ToString()]);
|
|
return m_ParcelAddress[land.GlobalID.ToString()];
|
|
}
|
|
}
|
|
|
|
if (land.LocalID != 1 && (land.Flags & (uint)ParcelFlags.UseEstateVoiceChan) == 0)
|
|
{
|
|
landName = String.Format("{0}:{1}", scene.RegionInfo.RegionName, land.Name);
|
|
landUUID = land.GlobalID.ToString();
|
|
m_log.DebugFormat("{0}: Region:Parcel \"{1}\": parcel id {2}: using channel name {3}",
|
|
logHeader, landName, land.LocalID, landUUID);
|
|
}
|
|
else
|
|
{
|
|
landName = String.Format("{0}:{1}", scene.RegionInfo.RegionName, scene.RegionInfo.RegionName);
|
|
landUUID = scene.RegionInfo.RegionID.ToString();
|
|
m_log.DebugFormat("{0}: Region:Parcel \"{1}\": parcel id {2}: using channel name {3}",
|
|
logHeader, landName, land.LocalID, landUUID);
|
|
}
|
|
|
|
// slvoice handles the sip address differently if it begins with confctl, hiding it from the user in
|
|
// the friends list. however it also disables the personal speech indicators as well unless some
|
|
// siren14-3d codec magic happens. we dont have siren143d so we'll settle for the personal speech indicator.
|
|
channelUri = String.Format("sip:conf-{0}@{1}",
|
|
"x" + Convert.ToBase64String(Encoding.ASCII.GetBytes(landUUID)),
|
|
/*m_freeSwitchRealm*/ "webRTC");
|
|
|
|
lock (m_ParcelAddress)
|
|
{
|
|
if (!m_ParcelAddress.ContainsKey(land.GlobalID.ToString()))
|
|
{
|
|
m_ParcelAddress.Add(land.GlobalID.ToString(), channelUri);
|
|
}
|
|
}
|
|
|
|
return channelUri;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Convert the LLSDXml body of the request to an OSDMap for easier handling.
|
|
/// Also logs the request if message details is enabled.
|
|
/// </summary>
|
|
/// <param name="request"></param>
|
|
/// <param name="pCaller"></param>
|
|
/// <returns>'null' if the request body is empty or cannot be deserialized</returns>
|
|
private OSDMap BodyToMap(IOSHttpRequest request, string pCaller)
|
|
{
|
|
try
|
|
{
|
|
using Stream inputStream = request.InputStream;
|
|
if (inputStream.Length > 0)
|
|
{
|
|
OSD tmp = OSDParser.DeserializeLLSDXml(inputStream);
|
|
if (_MessageDetails)
|
|
m_log.Debug($"{pCaller} BodyToMap: Request: {tmp}");
|
|
if(tmp is OSDMap map)
|
|
return map;
|
|
}
|
|
}
|
|
catch
|
|
{
|
|
m_log.Debug($"{pCaller} BodyToMap: Fail to decode LLSDXml request");
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
}
|