/* * 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.IO; using System.Net; using System.Text; using System.Xml; using System.Collections; using System.Collections.Generic; using System.Reflection; using System.Threading; using OpenMetaverse; using log4net; using Nini.Config; using Nwc.XmlRpc; using OpenSim.Framework; using OpenSim.Framework.Communications.Cache; using OpenSim.Framework.Capabilities; using OpenSim.Framework.Servers; using OpenSim.Framework.Servers.HttpServer; using OpenSim.Region.Framework.Interfaces; using OpenSim.Region.Framework.Scenes; using Caps = OpenSim.Framework.Capabilities.Caps; namespace OpenSim.Region.OptionalModules.Avatar.Voice.VivoxVoice { public class VivoxVoiceModule : ISharedRegionModule { // channel distance model values public const int CHAN_DIST_NONE = 0; // no attenuation public const int CHAN_DIST_INVERSE = 1; // inverse distance attenuation public const int CHAN_DIST_LINEAR = 2; // linear attenuation public const int CHAN_DIST_EXPONENT = 3; // exponential attenuation public const int CHAN_DIST_DEFAULT = CHAN_DIST_LINEAR; // channel type values public static readonly string CHAN_TYPE_POSITIONAL = "positional"; public static readonly string CHAN_TYPE_CHANNEL = "channel"; public static readonly string CHAN_TYPE_DEFAULT = CHAN_TYPE_POSITIONAL; // channel mode values public static readonly string CHAN_MODE_OPEN = "open"; public static readonly string CHAN_MODE_LECTURE = "lecture"; public static readonly string CHAN_MODE_PRESENTATION = "presentation"; public static readonly string CHAN_MODE_AUDITORIUM = "auditorium"; public static readonly string CHAN_MODE_DEFAULT = CHAN_MODE_OPEN; // unconstrained default values public const double CHAN_ROLL_OFF_DEFAULT = 2.0; // rate of attenuation public const double CHAN_ROLL_OFF_MIN = 1.0; public const double CHAN_ROLL_OFF_MAX = 4.0; public const int CHAN_MAX_RANGE_DEFAULT = 80; // distance at which channel is silent public const int CHAN_MAX_RANGE_MIN = 0; public const int CHAN_MAX_RANGE_MAX = 160; public const int CHAN_CLAMPING_DISTANCE_DEFAULT = 10; // distance before attenuation applies public const int CHAN_CLAMPING_DISTANCE_MIN = 0; public const int CHAN_CLAMPING_DISTANCE_MAX = 160; // Infrastructure private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); private static readonly Object vlock = new Object(); // Capability strings private static readonly string m_parcelVoiceInfoRequestPath = "0107/"; private static readonly string m_provisionVoiceAccountRequestPath = "0108/"; private static readonly string m_chatSessionRequestPath = "0109/"; // Control info, e.g. vivox server, admin user, admin password private static bool m_pluginEnabled = false; private static bool m_adminConnected = false; private static string m_vivoxServer; private static string m_vivoxSipUri; private static string m_vivoxVoiceAccountApi; private static string m_vivoxAdminUser; private static string m_vivoxAdminPassword; private static string m_authToken = String.Empty; private static int m_vivoxChannelDistanceModel; private static double m_vivoxChannelRollOff; private static int m_vivoxChannelMaximumRange; private static string m_vivoxChannelMode; private static string m_vivoxChannelType; private static int m_vivoxChannelClampingDistance; private static Dictionary m_parents = new Dictionary(); private static bool m_dumpXml; private IConfig m_config; public void Initialise(IConfigSource config) { m_config = config.Configs["VivoxVoice"]; if (null == m_config) { m_log.Info("[VivoxVoice] no config found, plugin disabled"); return; } if (!m_config.GetBoolean("enabled", false)) { m_log.Info("[VivoxVoice] plugin disabled by configuration"); return; } try { // retrieve configuration variables m_vivoxServer = m_config.GetString("vivox_server", String.Empty); m_vivoxSipUri = m_config.GetString("vivox_sip_uri", String.Empty); m_vivoxAdminUser = m_config.GetString("vivox_admin_user", String.Empty); m_vivoxAdminPassword = m_config.GetString("vivox_admin_password", String.Empty); m_vivoxChannelDistanceModel = m_config.GetInt("vivox_channel_distance_model", CHAN_DIST_DEFAULT); m_vivoxChannelRollOff = m_config.GetDouble("vivox_channel_roll_off", CHAN_ROLL_OFF_DEFAULT); m_vivoxChannelMaximumRange = m_config.GetInt("vivox_channel_max_range", CHAN_MAX_RANGE_DEFAULT); m_vivoxChannelMode = m_config.GetString("vivox_channel_mode", CHAN_MODE_DEFAULT).ToLower(); m_vivoxChannelType = m_config.GetString("vivox_channel_type", CHAN_TYPE_DEFAULT).ToLower(); m_vivoxChannelClampingDistance = m_config.GetInt("vivox_channel_clamping_distance", CHAN_CLAMPING_DISTANCE_DEFAULT); m_dumpXml = m_config.GetBoolean("dump_xml", false); // Validate against constraints and default if necessary if (m_vivoxChannelRollOff < CHAN_ROLL_OFF_MIN || m_vivoxChannelRollOff > CHAN_ROLL_OFF_MAX) { m_log.WarnFormat("[VivoxVoice] Invalid value for roll off ({0}), reset to {1}.", m_vivoxChannelRollOff, CHAN_ROLL_OFF_DEFAULT); m_vivoxChannelRollOff = CHAN_ROLL_OFF_DEFAULT; } if (m_vivoxChannelMaximumRange < CHAN_MAX_RANGE_MIN || m_vivoxChannelMaximumRange > CHAN_MAX_RANGE_MAX) { m_log.WarnFormat("[VivoxVoice] Invalid value for maximum range ({0}), reset to {1}.", m_vivoxChannelMaximumRange, CHAN_MAX_RANGE_DEFAULT); m_vivoxChannelMaximumRange = CHAN_MAX_RANGE_DEFAULT; } if (m_vivoxChannelClampingDistance < CHAN_CLAMPING_DISTANCE_MIN || m_vivoxChannelClampingDistance > CHAN_CLAMPING_DISTANCE_MAX) { m_log.WarnFormat("[VivoxVoice] Invalid value for clamping distance ({0}), reset to {1}.", m_vivoxChannelClampingDistance, CHAN_CLAMPING_DISTANCE_DEFAULT); m_vivoxChannelClampingDistance = CHAN_CLAMPING_DISTANCE_DEFAULT; } switch (m_vivoxChannelMode) { case "open" : break; case "lecture" : break; case "presentation" : break; case "auditorium" : break; default : m_log.WarnFormat("[VivoxVoice] Invalid value for channel mode ({0}), reset to {1}.", m_vivoxChannelMode, CHAN_MODE_DEFAULT); m_vivoxChannelMode = CHAN_MODE_DEFAULT; break; } switch (m_vivoxChannelType) { case "positional" : break; case "channel" : break; default : m_log.WarnFormat("[VivoxVoice] Invalid value for channel type ({0}), reset to {1}.", m_vivoxChannelType, CHAN_TYPE_DEFAULT); m_vivoxChannelType = CHAN_TYPE_DEFAULT; break; } m_vivoxVoiceAccountApi = String.Format("http://{0}/api2", m_vivoxServer); // Admin interface required values if (String.IsNullOrEmpty(m_vivoxServer) || String.IsNullOrEmpty(m_vivoxSipUri) || String.IsNullOrEmpty(m_vivoxAdminUser) || String.IsNullOrEmpty(m_vivoxAdminPassword)) { m_log.Error("[VivoxVoice] plugin mis-configured"); m_log.Info("[VivoxVoice] plugin disabled: incomplete configuration"); return; } m_log.InfoFormat("[VivoxVoice] using vivox server {0}", m_vivoxServer); // Get admin rights and cleanup any residual channel definition DoAdminLogin(); m_pluginEnabled = true; m_log.Info("[VivoxVoice] plugin enabled"); } catch (Exception e) { m_log.ErrorFormat("[VivoxVoice] plugin initialization failed: {0}", e.Message); m_log.DebugFormat("[VivoxVoice] plugin initialization failed: {0}", e.ToString()); return; } } // Called to indicate that the module has been added to the region public void AddRegion(Scene scene) { if (m_pluginEnabled) { lock (vlock) { string channelId; string sceneUUID = scene.RegionInfo.RegionID.ToString(); string sceneName = scene.RegionInfo.RegionName; // Make sure that all local channels are deleted. // So we have to search for the children, and then do an // iteration over the set of chidren identified. // This assumes that there is just one directory per // region. if (VivoxTryGetDirectory(sceneUUID + "D", out channelId)) { m_log.DebugFormat("[VivoxVoice]: region {0}: uuid {1}: located directory id {2}", sceneName, sceneUUID, channelId); XmlElement children = VivoxListChildren(channelId); string count; if (XmlFind(children, "response.level0.channel-search.count", out count)) { int cnum = Convert.ToInt32(count); for (int i = 0; i < cnum; i++) { string id; if (XmlFind(children, "response.level0.channel-search.channels.channels.level4.id", i, out id)) { if (!IsOK(VivoxDeleteChannel(channelId, id))) m_log.WarnFormat("[VivoxVoice] Channel delete failed {0}:{1}:{2}", i, channelId, id); } } } } else { if (!VivoxTryCreateDirectory(sceneUUID + "D", sceneName, out channelId)) { m_log.WarnFormat("[VivoxVoice] Create failed <{0}:{1}:{2}>", "*", sceneUUID, sceneName); channelId = String.Empty; } } // Create a dictionary entry unconditionally. This eliminates the // need to check for a parent in the core code. The end result is // the same, if the parent table entry is an empty string, then // region channels will be created as first-level channels. lock (m_parents) if (m_parents.ContainsKey(sceneUUID)) { RemoveRegion(scene); m_parents.Add(sceneUUID, channelId); } else { m_parents.Add(sceneUUID, channelId); } } // we need to capture scene in an anonymous method // here as we need it later in the callbacks scene.EventManager.OnRegisterCaps += delegate(UUID agentID, Caps caps) { OnRegisterCaps(scene, agentID, caps); }; } } // Called to indicate that all loadable modules have now been added public void RegionLoaded(Scene scene) { // Do nothing. } // Called to indicate that the region is going away. public void RemoveRegion(Scene scene) { if (m_pluginEnabled) { lock (vlock) { string channelId; string sceneUUID = scene.RegionInfo.RegionID.ToString(); string sceneName = scene.RegionInfo.RegionName; // Make sure that all local channels are deleted. // So we have to search for the children, and then do an // iteration over the set of chidren identified. // This assumes that there is just one directory per // region. if (VivoxTryGetDirectory(sceneUUID + "D", out channelId)) { m_log.DebugFormat("[VivoxVoice]: region {0}: uuid {1}: located directory id {2}", sceneName, sceneUUID, channelId); XmlElement children = VivoxListChildren(channelId); string count; if (XmlFind(children, "response.level0.channel-search.count", out count)) { int cnum = Convert.ToInt32(count); for (int i = 0; i < cnum; i++) { string id; if (XmlFind(children, "response.level0.channel-search.channels.channels.level4.id", i, out id)) { if (!IsOK(VivoxDeleteChannel(channelId, id))) m_log.WarnFormat("[VivoxVoice] Channel delete failed {0}:{1}:{2}", i, channelId, id); } } } } if (!IsOK(VivoxDeleteChannel(null, channelId))) m_log.WarnFormat("[VivoxVoice] Parent channel delete failed {0}:{1}:{2}", sceneName, sceneUUID, channelId); // Remove the channel umbrella entry lock (m_parents) { if (m_parents.ContainsKey(sceneUUID)) { m_parents.Remove(sceneUUID); } } } } } public void PostInitialise() { // Do nothing. } public void Close() { if (m_pluginEnabled) VivoxLogout(); } public Type ReplacableInterface { get { return null; } } public string Name { get { return "VivoxVoiceModule"; } } public bool IsSharedModule { get { return true; } } // // OnRegisterCaps is invoked via the scene.EventManager // everytime OpenSim hands out capabilities to a client // (login, region crossing). We contribute two capabilities to // the set of capabilities handed back to the client: // ProvisionVoiceAccountRequest and ParcelVoiceInfoRequest. // // ProvisionVoiceAccountRequest allows the client to obtain // the voice account credentials for the avatar it is // controlling (e.g., user name, password, etc). // // ParcelVoiceInfoRequest is invoked whenever the client // changes from one region or parcel to another. // // Note that OnRegisterCaps is called here via a closure // delegate containing the scene of the respective region (see // Initialise()). // public void OnRegisterCaps(Scene scene, UUID agentID, Caps caps) { m_log.DebugFormat("[VivoxVoice] OnRegisterCaps: agentID {0} caps {1}", agentID, caps); string capsBase = "/CAPS/" + caps.CapsObjectPath; caps.RegisterHandler("ProvisionVoiceAccountRequest", new RestStreamHandler("POST", capsBase + m_provisionVoiceAccountRequestPath, delegate(string request, string path, string param, OSHttpRequest httpRequest, OSHttpResponse httpResponse) { return ProvisionVoiceAccountRequest(scene, request, path, param, agentID, caps); })); caps.RegisterHandler("ParcelVoiceInfoRequest", new RestStreamHandler("POST", capsBase + m_parcelVoiceInfoRequestPath, delegate(string request, string path, string param, OSHttpRequest httpRequest, OSHttpResponse httpResponse) { return ParcelVoiceInfoRequest(scene, request, path, param, agentID, caps); })); caps.RegisterHandler("ChatSessionRequest", new RestStreamHandler("POST", capsBase + m_chatSessionRequestPath, delegate(string request, string path, string param, OSHttpRequest httpRequest, OSHttpResponse httpResponse) { return ChatSessionRequest(scene, request, path, param, agentID, caps); })); } /// /// Callback for a client request for Voice Account Details /// /// current scene object of the client /// /// /// /// /// /// public string ProvisionVoiceAccountRequest(Scene scene, string request, string path, string param, UUID agentID, Caps caps) { try { ScenePresence avatar = null; string avatarName = null; if (scene == null) throw new Exception("[VivoxVoice][PROVISIONVOICE] Invalid scene"); avatar = scene.GetScenePresence(agentID); while (avatar == null) { Thread.Sleep(100); avatar = scene.GetScenePresence(agentID); } avatarName = avatar.Name; m_log.DebugFormat("[VivoxVoice][PROVISIONVOICE]: scene = {0}, agentID = {1}", scene, agentID); m_log.DebugFormat("[VivoxVoice][PROVISIONVOICE]: request: {0}, path: {1}, param: {2}", request, path, param); XmlElement resp; bool retry = false; string agentname = "x" + Convert.ToBase64String(agentID.GetBytes()); string password = new UUID(Guid.NewGuid()).ToString().Replace('-','Z').Substring(0,16); string code = String.Empty; agentname = agentname.Replace('+', '-').Replace('/', '_'); do { resp = VivoxGetAccountInfo(agentname); if (XmlFind(resp, "response.level0.status", out code)) { if (code != "OK") { if (XmlFind(resp, "response.level0.body.code", out code)) { // If the request was recognized, then this should be set to something switch (code) { case "201" : // Account expired m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Get account information failed : expired credentials", avatarName); m_adminConnected = false; retry = DoAdminLogin(); break; case "202" : // Missing credentials m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Get account information failed : missing credentials", avatarName); break; case "212" : // Not authorized m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Get account information failed : not authorized", avatarName); break; case "300" : // Required parameter missing m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Get account information failed : parameter missing", avatarName); break; case "403" : // Account does not exist resp = VivoxCreateAccount(agentname,password); // Note: This REALLY MUST BE status. Create Account does not return code. if (XmlFind(resp, "response.level0.status", out code)) { switch (code) { case "201" : // Account expired m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Create account information failed : expired credentials", avatarName); m_adminConnected = false; retry = DoAdminLogin(); break; case "202" : // Missing credentials m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Create account information failed : missing credentials", avatarName); break; case "212" : // Not authorized m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Create account information failed : not authorized", avatarName); break; case "300" : // Required parameter missing m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Create account information failed : parameter missing", avatarName); break; case "400" : // Create failed m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Create account information failed : create failed", avatarName); break; } } break; case "404" : // Failed to retrieve account m_log.ErrorFormat("[VivoxVoice]: avatar \"{0}\": Get account information failed : retrieve failed"); // [AMW] Sleep and retry for a fixed period? Or just abandon? break; } } } } } while (retry); if (code != "OK") { m_log.DebugFormat("[VivoxVoice][PROVISIONVOICE]: Get Account Request failed for \"{0}\"", avatarName); throw new Exception("Unable to execute request"); } // Unconditionally change the password on each request VivoxPassword(agentname, password); LLSDVoiceAccountResponse voiceAccountResponse = new LLSDVoiceAccountResponse(agentname, password, m_vivoxSipUri, m_vivoxVoiceAccountApi); string r = LLSDHelpers.SerialiseLLSDReply(voiceAccountResponse); m_log.DebugFormat("[VivoxVoice][PROVISIONVOICE]: avatar \"{0}\": {1}", avatarName, r); return r; } catch (Exception e) { m_log.ErrorFormat("[VivoxVoice][PROVISIONVOICE]: : {0}, retry later", e.Message); m_log.DebugFormat("[VivoxVoice][PROVISIONVOICE]: : {0} failed", e.ToString()); return ""; } } /// /// Callback for a client request for ParcelVoiceInfo /// /// current scene object of the client /// /// /// /// /// /// public string ParcelVoiceInfoRequest(Scene scene, string request, string path, string param, UUID agentID, Caps caps) { ScenePresence avatar = scene.GetScenePresence(agentID); string avatarName = avatar.Name; // - check whether we have a region channel in our cache // - if not: // create it and cache it // - send it to the client // - send channel_uri: as "sip:regionID@m_sipDomain" try { LLSDParcelVoiceInfoResponse parcelVoiceInfo; string channel_uri; if (null == scene.LandChannel) throw new Exception(String.Format("region \"{0}\": avatar \"{1}\": land data not yet available", scene.RegionInfo.RegionName, avatarName)); // get channel_uri: check first whether estate // settings allow voice, then whether parcel allows // voice, if all do retrieve or obtain the parcel // voice channel LandData land = scene.GetLandData(avatar.AbsolutePosition.X, avatar.AbsolutePosition.Y); m_log.DebugFormat("[VivoxVoice][PARCELVOICE]: region \"{0}\": Parcel \"{1}\" ({2}): avatar \"{3}\": request: {4}, path: {5}, param: {6}", scene.RegionInfo.RegionName, land.Name, land.LocalID, avatarName, request, path, param); // m_log.DebugFormat("[VivoxVoice][PARCELVOICE]: avatar \"{0}\": location: {1} {2} {3}", // avatarName, avatar.AbsolutePosition.X, avatar.AbsolutePosition.Y, avatar.AbsolutePosition.Z); // TODO: EstateSettings don't seem to get propagated... if (!scene.RegionInfo.EstateSettings.AllowVoice) { m_log.DebugFormat("[VivoxVoice][PARCELVOICE]: region \"{0}\": voice not enabled in estate settings", scene.RegionInfo.RegionName); channel_uri = String.Empty; } if ((land.Flags & (uint)Parcel.ParcelFlags.AllowVoiceChat) == 0) { m_log.DebugFormat("[VivoxVoice][PARCELVOICE]: region \"{0}\": Parcel \"{1}\" ({2}): avatar \"{3}\": voice not enabled for parcel", scene.RegionInfo.RegionName, land.Name, land.LocalID, avatarName); channel_uri = String.Empty; } else { channel_uri = RegionGetOrCreateChannel(scene, land); } // fill in our response to the client Hashtable creds = new Hashtable(); creds["channel_uri"] = channel_uri; parcelVoiceInfo = new LLSDParcelVoiceInfoResponse(scene.RegionInfo.RegionName, land.LocalID, creds); string r = LLSDHelpers.SerialiseLLSDReply(parcelVoiceInfo); m_log.DebugFormat("[VivoxVoice][PARCELVOICE]: region \"{0}\": Parcel \"{1}\" ({2}): avatar \"{3}\": {4}", scene.RegionInfo.RegionName, land.Name, land.LocalID, avatarName, r); return r; } catch (Exception e) { m_log.ErrorFormat("[VivoxVoice][PARCELVOICE]: region \"{0}\": avatar \"{1}\": {2}, retry later", scene.RegionInfo.RegionName, avatarName, e.Message); m_log.DebugFormat("[VivoxVoice][PARCELVOICE]: region \"{0}\": avatar \"{1}\": {2} failed", scene.RegionInfo.RegionName, avatarName, e.ToString()); return ""; } } /// /// Callback for a client request for a private chat channel /// /// current scene object of the client /// /// /// /// /// /// public string ChatSessionRequest(Scene scene, string request, string path, string param, UUID agentID, Caps caps) { ScenePresence avatar = scene.GetScenePresence(agentID); string avatarName = avatar.Name; m_log.DebugFormat("[VivoxVoice][CHATSESSION]: avatar \"{0}\": request: {1}, path: {2}, param: {3}", avatarName, request, path, param); return "true"; } private string RegionGetOrCreateChannel(Scene scene, LandData land) { string channelUri = null; string channelId = null; string landUUID; string landName; string parentId; lock (m_parents) parentId = m_parents[scene.RegionInfo.RegionID.ToString()]; // 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. if (land.LocalID != 1 && (land.Flags & (uint)Parcel.ParcelFlags.UseEstateVoiceChan) == 0) { landName = String.Format("{0}:{1}", scene.RegionInfo.RegionName, land.Name); landUUID = land.GlobalID.ToString(); m_log.DebugFormat("[VivoxVoice]: Region:Parcel \"{0}\": parcel id {1}: using channel name {2}", landName, land.LocalID, landUUID); } else { landName = String.Format("{0}:{1}", scene.RegionInfo.RegionName, scene.RegionInfo.RegionName); landUUID = scene.RegionInfo.RegionID.ToString(); m_log.DebugFormat("[VivoxVoice]: Region:Parcel \"{0}\": parcel id {1}: using channel name {2}", landName, land.LocalID, landUUID); } lock (vlock) { // Added by Adam to help debug channel not availible errors. if (VivoxTryGetChannel(parentId, landUUID, out channelId, out channelUri)) m_log.DebugFormat("[VivoxVoice] Found existing channel at " + channelUri); else if (VivoxTryCreateChannel(parentId, landUUID, landName, out channelUri)) m_log.DebugFormat("[VivoxVoice] Created new channel at " + channelUri); else throw new Exception("vivox channel uri not available"); m_log.DebugFormat("[VivoxVoice]: Region:Parcel \"{0}\": parent channel id {1}: retrieved parcel channel_uri {2} ", landName, parentId, channelUri); } return channelUri; } private static readonly string m_vivoxLoginPath = "http://{0}/api2/viv_signin.php?userid={1}&pwd={2}"; /// /// Perform administrative login for Vivox. /// Returns a hash table containing values returned from the request. /// private XmlElement VivoxLogin(string name, string password) { string requrl = String.Format(m_vivoxLoginPath, m_vivoxServer, name, password); return VivoxCall(requrl, false); } private static readonly string m_vivoxLogoutPath = "http://{0}/api2/viv_signout.php?auth_token={1}"; /// /// Perform administrative logout for Vivox. /// private XmlElement VivoxLogout() { string requrl = String.Format(m_vivoxLogoutPath, m_vivoxServer, m_authToken); return VivoxCall(requrl, false); } private static readonly string m_vivoxGetAccountPath = "http://{0}/api2/viv_get_acct.php?auth_token={1}&user_name={2}"; /// /// Retrieve account information for the specified user. /// Returns a hash table containing values returned from the request. /// private XmlElement VivoxGetAccountInfo(string user) { string requrl = String.Format(m_vivoxGetAccountPath, m_vivoxServer, m_authToken, user); return VivoxCall(requrl, true); } private static readonly string m_vivoxNewAccountPath = "http://{0}/api2/viv_adm_acct_new.php?username={1}&pwd={2}&auth_token={3}"; /// /// Creates a new account. /// For now we supply the minimum set of values, which /// is user name and password. We *can* supply a lot more /// demographic data. /// private XmlElement VivoxCreateAccount(string user, string password) { string requrl = String.Format(m_vivoxNewAccountPath, m_vivoxServer, user, password, m_authToken); return VivoxCall(requrl, true); } private static readonly string m_vivoxPasswordPath = "http://{0}/api2/viv_adm_password.php?user_name={1}&new_pwd={2}&auth_token={3}"; /// /// Change the user's password. /// private XmlElement VivoxPassword(string user, string password) { string requrl = String.Format(m_vivoxPasswordPath, m_vivoxServer, user, password, m_authToken); return VivoxCall(requrl, true); } private static readonly string m_vivoxChannelPath = "http://{0}/api2/viv_chan_mod.php?mode={1}&chan_name={2}&auth_token={3}"; /// /// Create a channel. /// Once again, there a multitude of options possible. In the simplest case /// we specify only the name and get a non-persistent cannel in return. Non /// persistent means that the channel gets deleted if no-one uses it for /// 5 hours. To accomodate future requirements, it may be a good idea to /// initially create channels under the umbrella of a parent ID based upon /// the region name. That way we have a context for side channels, if those /// are required in a later phase. /// /// In this case the call handles parent and description as optional values. /// private bool VivoxTryCreateChannel(string parent, string channelId, string description, out string channelUri) { string requrl = String.Format(m_vivoxChannelPath, m_vivoxServer, "create", channelId, m_authToken); if (parent != null && parent != String.Empty) { requrl = String.Format("{0}&chan_parent={1}", requrl, parent); } if (description != null && description != String.Empty) { requrl = String.Format("{0}&chan_desc={1}", requrl, description); } requrl = String.Format("{0}&chan_type={1}", requrl, m_vivoxChannelType); requrl = String.Format("{0}&chan_mode={1}", requrl, m_vivoxChannelMode); requrl = String.Format("{0}&chan_roll_off={1}", requrl, m_vivoxChannelRollOff); requrl = String.Format("{0}&chan_dist_model={1}", requrl, m_vivoxChannelDistanceModel); requrl = String.Format("{0}&chan_max_range={1}", requrl, m_vivoxChannelMaximumRange); requrl = String.Format("{0}&chan_ckamping_distance={1}", requrl, m_vivoxChannelClampingDistance); XmlElement resp = VivoxCall(requrl, true); if (XmlFind(resp, "response.level0.body.chan_uri", out channelUri)) return true; channelUri = String.Empty; return false; } /// /// Create a directory. /// Create a channel with an unconditional type of "dir" (indicating directory). /// This is used to create an arbitrary name tree for partitioning of the /// channel name space. /// The parent and description are optional values. /// private bool VivoxTryCreateDirectory(string dirId, string description, out string channelId) { string requrl = String.Format(m_vivoxChannelPath, m_vivoxServer, "create", dirId, m_authToken); // if (parent != null && parent != String.Empty) // { // requrl = String.Format("{0}&chan_parent={1}", requrl, parent); // } if (description != null && description != String.Empty) { requrl = String.Format("{0}&chan_desc={1}", requrl, description); } requrl = String.Format("{0}&chan_type={1}", requrl, "dir"); XmlElement resp = VivoxCall(requrl, true); if (IsOK(resp) && XmlFind(resp, "response.level0.body.chan_id", out channelId)) return true; channelId = String.Empty; return false; } private static readonly string m_vivoxChannelSearchPath = "http://{0}/api2/viv_chan_search.php?cond_channame={1}&auth_token={2}"; /// /// Retrieve a channel. /// Once again, there a multitude of options possible. In the simplest case /// we specify only the name and get a non-persistent cannel in return. Non /// persistent means that the channel gets deleted if no-one uses it for /// 5 hours. To accomodate future requirements, it may be a good idea to /// initially create channels under the umbrella of a parent ID based upon /// the region name. That way we have a context for side channels, if those /// are required in a later phase. /// In this case the call handles parent and description as optional values. /// private bool VivoxTryGetChannel(string channelParent, string channelName, out string channelId, out string channelUri) { string count; string requrl = String.Format(m_vivoxChannelSearchPath, m_vivoxServer, channelName, m_authToken); XmlElement resp = VivoxCall(requrl, true); if (XmlFind(resp, "response.level0.channel-search.count", out count)) { int channels = Convert.ToInt32(count); for (int i = 0; i < channels; i++) { string name; string id; string type; string uri; string parent; // skip if not a channel if (!XmlFind(resp, "response.level0.channel-search.channels.channels.level4.type", i, out type) || (type != "channel" && type != "positional_M")) { m_log.Debug("[VivoxVoice] Skipping Channel " + i + " as it's not a channel."); continue; } // skip if not the name we are looking for if (!XmlFind(resp, "response.level0.channel-search.channels.channels.level4.name", i, out name) || name != channelName) { m_log.Debug("[VivoxVoice] Skipping Channel " + i + " as it has no name."); continue; } // skip if parent does not match if (channelParent != null && !XmlFind(resp, "response.level0.channel-search.channels.channels.level4.parent", i, out parent)) { m_log.Debug("[VivoxVoice] Skipping Channel " + i + "/" + name + " as it's parent doesnt match"); continue; } // skip if no channel id available if (!XmlFind(resp, "response.level0.channel-search.channels.channels.level4.id", i, out id)) { m_log.Debug("[VivoxVoice] Skipping Channel " + i + "/" + name + " as it has no channel ID"); continue; } // skip if no channel uri available if (!XmlFind(resp, "response.level0.channel-search.channels.channels.level4.uri", i, out uri)) { m_log.Debug("[VivoxVoice] Skipping Channel " + i + "/" + name + " as it has no channel URI"); continue; } channelId = id; channelUri = uri; return true; } } channelId = String.Empty; channelUri = String.Empty; XmlDocument tmpDoc = new XmlDocument(); tmpDoc.AppendChild(resp); m_log.Debug("[VivoxVoice] Could not find channel in XMLRESP: " + tmpDoc.InnerText); return false; } private bool VivoxTryGetDirectory(string directoryName, out string directoryId) { string count; string requrl = String.Format(m_vivoxChannelSearchPath, m_vivoxServer, directoryName, m_authToken); XmlElement resp = VivoxCall(requrl, true); if (XmlFind(resp, "response.level0.channel-search.count", out count)) { int channels = Convert.ToInt32(count); for (int i = 0; i < channels; i++) { string name; string id; string type; // skip if not a directory if (!XmlFind(resp, "response.level0.channel-search.channels.channels.level4.type", i, out type) || type != "dir") continue; // skip if not the name we are looking for if (!XmlFind(resp, "response.level0.channel-search.channels.channels.level4.name", i, out name) || name != directoryName) continue; // skip if no channel id available if (!XmlFind(resp, "response.level0.channel-search.channels.channels.level4.id", i, out id)) continue; directoryId = id; return true; } } directoryId = String.Empty; return false; } // private static readonly string m_vivoxChannelById = "http://{0}/api2/viv_chan_mod.php?mode={1}&chan_id={2}&auth_token={3}"; // private XmlElement VivoxGetChannelById(string parent, string channelid) // { // string requrl = String.Format(m_vivoxChannelById, m_vivoxServer, "get", channelid, m_authToken); // if (parent != null && parent != String.Empty) // return VivoxGetChild(parent, channelid); // else // return VivoxCall(requrl, true); // } /// /// Delete a channel. /// Once again, there a multitude of options possible. In the simplest case /// we specify only the name and get a non-persistent cannel in return. Non /// persistent means that the channel gets deleted if no-one uses it for /// 5 hours. To accomodate future requirements, it may be a good idea to /// initially create channels under the umbrella of a parent ID based upon /// the region name. That way we have a context for side channels, if those /// are required in a later phase. /// In this case the call handles parent and description as optional values. /// private static readonly string m_vivoxChannelDel = "http://{0}/api2/viv_chan_mod.php?mode={1}&chan_id={2}&auth_token={3}"; private XmlElement VivoxDeleteChannel(string parent, string channelid) { string requrl = String.Format(m_vivoxChannelDel, m_vivoxServer, "delete", channelid, m_authToken); if (parent != null && parent != String.Empty) { requrl = String.Format("{0}&chan_parent={1}", requrl, parent); } return VivoxCall(requrl, true); } /// /// Return information on channels in the given directory /// private static readonly string m_vivoxChannelSearch = "http://{0}/api2/viv_chan_search.php?&cond_chanparent={1}&auth_token={2}"; private XmlElement VivoxListChildren(string channelid) { string requrl = String.Format(m_vivoxChannelSearch, m_vivoxServer, channelid, m_authToken); return VivoxCall(requrl, true); } // private XmlElement VivoxGetChild(string parent, string child) // { // XmlElement children = VivoxListChildren(parent); // string count; // if (XmlFind(children, "response.level0.channel-search.count", out count)) // { // int cnum = Convert.ToInt32(count); // for (int i = 0; i < cnum; i++) // { // string name; // string id; // if (XmlFind(children, "response.level0.channel-search.channels.channels.level4.name", i, out name)) // { // if (name == child) // { // if (XmlFind(children, "response.level0.channel-search.channels.channels.level4.id", i, out id)) // { // return VivoxGetChannelById(null, id); // } // } // } // } // } // // One we *know* does not exist. // return VivoxGetChannel(null, Guid.NewGuid().ToString()); // } /// /// This method handles the WEB side of making a request over the /// Vivox interface. The returned values are tansferred to a has /// table which is returned as the result. /// The outcome of the call can be determined by examining the /// status value in the hash table. /// private XmlElement VivoxCall(string requrl, bool admin) { XmlDocument doc = null; // If this is an admin call, and admin is not connected, // and the admin id cannot be connected, then fail. if (admin && !m_adminConnected && !DoAdminLogin()) return null; doc = new XmlDocument(); try { // Otherwise prepare the request m_log.DebugFormat("[VivoxVoice] Sending request <{0}>", requrl); HttpWebRequest req = (HttpWebRequest)WebRequest.Create(requrl); HttpWebResponse rsp = null; // We are sending just parameters, no content req.ContentLength = 0; // Send request and retrieve the response rsp = (HttpWebResponse)req.GetResponse(); XmlTextReader rdr = new XmlTextReader(rsp.GetResponseStream()); doc.Load(rdr); rdr.Close(); } catch (Exception e) { m_log.ErrorFormat("[VivoxVoice] Error in admin call : {0}", e.Message); } // If we're debugging server responses, dump the whole // load now if (m_dumpXml) XmlScanl(doc.DocumentElement,0); return doc.DocumentElement; } /// /// Just say if it worked. /// private bool IsOK(XmlElement resp) { string status; XmlFind(resp, "response.level0.status", out status); return (status == "OK"); } /// /// Login has been factored in this way because it gets called /// from several places in the module, and we want it to work /// the same way each time. /// private bool DoAdminLogin() { m_log.Debug("[VivoxVoice] Establishing admin connection"); lock (vlock) { if (!m_adminConnected) { string status = "Unknown"; XmlElement resp = null; resp = VivoxLogin(m_vivoxAdminUser, m_vivoxAdminPassword); if (XmlFind(resp, "response.level0.body.status", out status)) { if (status == "Ok") { m_log.Info("[VivoxVoice] Admin connection established"); if (XmlFind(resp, "response.level0.body.auth_token", out m_authToken)) { if (m_dumpXml) m_log.DebugFormat("[VivoxVoice] Auth Token <{0}>", m_authToken); m_adminConnected = true; } } else { m_log.WarnFormat("[VivoxVoice] Admin connection failed, status = {0}", status); } } } } return m_adminConnected; } /// /// The XmlScan routine is provided to aid in the /// reverse engineering of incompletely /// documented packets returned by the Vivox /// voice server. It is only called if the /// m_dumpXml switch is set. /// private void XmlScanl(XmlElement e, int index) { if (e.HasChildNodes) { m_log.DebugFormat("<{0}>".PadLeft(index+5), e.Name); XmlNodeList children = e.ChildNodes; foreach (XmlNode node in children) switch (node.NodeType) { case XmlNodeType.Element : XmlScanl((XmlElement)node, index+1); break; case XmlNodeType.Text : m_log.DebugFormat("\"{0}\"".PadLeft(index+5), node.Value); break; default : break; } m_log.DebugFormat("".PadLeft(index+6), e.Name); } else { m_log.DebugFormat("<{0}/>".PadLeft(index+6), e.Name); } } private static readonly char[] C_POINT = {'.'}; /// /// The Find method is passed an element whose /// inner text is scanned in an attempt to match /// the name hierarchy passed in the 'tag' parameter. /// If the whole hierarchy is resolved, the InnerText /// value at that point is returned. Note that this /// may itself be a subhierarchy of the entire /// document. The function returns a boolean indicator /// of the search's success. The search is performed /// by the recursive Search method. /// private bool XmlFind(XmlElement root, string tag, int nth, out string result) { if (root == null || tag == null || tag == String.Empty) { result = String.Empty; return false; } return XmlSearch(root,tag.Split(C_POINT),0, ref nth, out result); } private bool XmlFind(XmlElement root, string tag, out string result) { int nth = 0; if (root == null || tag == null || tag == String.Empty) { result = String.Empty; return false; } return XmlSearch(root,tag.Split(C_POINT),0, ref nth, out result); } /// /// XmlSearch is initially called by XmlFind, and then /// recursively called by itself until the document /// supplied to XmlFind is either exhausted or the name hierarchy /// is matched. /// /// If the hierarchy is matched, the value is returned in /// result, and true returned as the function's /// value. Otherwise the result is set to the empty string and /// false is returned. /// private bool XmlSearch(XmlElement e, string[] tags, int index, ref int nth, out string result) { if (index == tags.Length || e.Name != tags[index]) { result = String.Empty; return false; } if (tags.Length-index == 1) { if (nth == 0) { result = e.InnerText; return true; } else { nth--; result = String.Empty; return false; } } if (e.HasChildNodes) { XmlNodeList children = e.ChildNodes; foreach (XmlNode node in children) { switch (node.NodeType) { case XmlNodeType.Element : if (XmlSearch((XmlElement)node, tags, index+1, ref nth, out result)) return true; break; default : break; } } } result = String.Empty; return false; } } }