stub out dlna server

9 files changed, 623 insertions, 11 deletions

diff --git a/MediaBrowser.Api/ScheduledTasks/ScheduledTasksWebSocketListener.cs b/MediaBrowser.Api/ScheduledTasks/ScheduledTasksWebSocketListener.cs
index c143635bf..0d3f5dfcd 100644
--- a/MediaBrowser.Api/ScheduledTasks/ScheduledTasksWebSocketListener.cs
+++ b/MediaBrowser.Api/ScheduledTasks/ScheduledTasksWebSocketListener.cs
@@ -39,6 +39,8 @@ namespace MediaBrowser.Api.ScheduledTasks
             TaskManager = taskManager;
         }
 
+        private bool _lastResponseHadTasksRunning = true;
+
         /// <summary>
         /// Gets the data to send.
         /// </summary>
@@ -46,7 +48,25 @@ namespace MediaBrowser.Api.ScheduledTasks
         /// <returns>Task{IEnumerable{TaskInfo}}.</returns>
         protected override Task<IEnumerable<TaskInfo>> GetDataToSend(object state)
         {
-            return Task.FromResult(TaskManager.ScheduledTasks
+            var tasks = TaskManager.ScheduledTasks.ToList();
+
+            var anyRunning = tasks.Any(i => i.State != TaskState.Idle);
+
+            if (anyRunning)
+            {
+                _lastResponseHadTasksRunning = true;
+            }
+            else
+            {
+                if (!_lastResponseHadTasksRunning)
+                {
+                    return Task.FromResult<IEnumerable<TaskInfo>>(null);
+                }
+
+                _lastResponseHadTasksRunning = false;
+            }
+
+            return Task.FromResult(tasks
                 .OrderBy(i => i.Name)
                 .Select(ScheduledTaskHelpers.GetTaskInfo)
                 .Where(i => !i.IsHidden));
diff --git a/MediaBrowser.Common/Net/BasePeriodicWebSocketListener.cs b/MediaBrowser.Common/Net/BasePeriodicWebSocketListener.cs
index 4ff34cfa1..33d3f368b 100644
--- a/MediaBrowser.Common/Net/BasePeriodicWebSocketListener.cs
+++ b/MediaBrowser.Common/Net/BasePeriodicWebSocketListener.cs
@@ -1,11 +1,11 @@
-using System.Globalization;
-using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Net;
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-using MediaBrowser.Model.Net;
 
 namespace MediaBrowser.Common.Net
 {
@@ -16,6 +16,7 @@ namespace MediaBrowser.Common.Net
     /// <typeparam name="TStateType">The type of the T state type.</typeparam>
     public abstract class BasePeriodicWebSocketListener<TReturnDataType, TStateType> : IWebSocketListener, IDisposable
         where TStateType : class, new()
+        where TReturnDataType : class
     {
         /// <summary>
         /// The _active connections
@@ -144,12 +145,15 @@ namespace MediaBrowser.Common.Net
 
                 var data = await GetDataToSend(tuple.Item4).ConfigureAwait(false);
 
-                await connection.SendAsync(new WebSocketMessage<TReturnDataType>
+                if (data != null)
                 {
-                    MessageType = Name,
-                    Data = data
+                    await connection.SendAsync(new WebSocketMessage<TReturnDataType>
+                    {
+                        MessageType = Name,
+                        Data = data
 
-                }, tuple.Item2.Token).ConfigureAwait(false);
+                    }, tuple.Item2.Token).ConfigureAwait(false);
+                }
 
                 tuple.Item5.Release();
             }
diff --git a/MediaBrowser.Dlna/MediaBrowser.Dlna.csproj b/MediaBrowser.Dlna/MediaBrowser.Dlna.csproj
index 4eb305e0f..bea281b61 100644
--- a/MediaBrowser.Dlna/MediaBrowser.Dlna.csproj
+++ b/MediaBrowser.Dlna/MediaBrowser.Dlna.csproj
@@ -98,6 +98,11 @@
     <Compile Include="Profiles\Xbox360Profile.cs" />
     <Compile Include="Profiles\XboxOneProfile.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Server\DlnaServerEntryPoint.cs" />
+    <Compile Include="Server\Headers.cs" />
+    <Compile Include="Server\RawHeaders.cs" />
+    <Compile Include="Server\SsdpHandler.cs" />
+    <Compile Include="Server\UpnpDevice.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\MediaBrowser.Common\MediaBrowser.Common.csproj">
@@ -113,9 +118,7 @@
       <Name>MediaBrowser.Model</Name>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup>
-    <Folder Include="Server\" />
-  </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/MediaBrowser.Dlna/Server/DlnaServerEntryPoint.cs b/MediaBrowser.Dlna/Server/DlnaServerEntryPoint.cs
new file mode 100644
index 000000000..f1af0af28
--- /dev/null
+++ b/MediaBrowser.Dlna/Server/DlnaServerEntryPoint.cs
@@ -0,0 +1,115 @@
+using MediaBrowser.Common;
+using MediaBrowser.Controller.Configuration;
+using MediaBrowser.Controller.Plugins;
+using MediaBrowser.Model.Logging;
+using System;
+
+namespace MediaBrowser.Dlna.Server
+{
+    public class DlnaServerEntryPoint : IServerEntryPoint
+    {
+        private readonly IServerConfigurationManager _config;
+        private readonly ILogger _logger;
+
+        private SsdpHandler _ssdpHandler;
+        private readonly IApplicationHost _appHost;
+
+        public DlnaServerEntryPoint(IServerConfigurationManager config, ILogManager logManager, IApplicationHost appHost)
+        {
+            _config = config;
+            _appHost = appHost;
+            _logger = logManager.GetLogger("DlnaServer");
+        }
+
+        public void Run()
+        {
+            _config.ConfigurationUpdated += ConfigurationUpdated;
+
+            //ReloadServer();
+        }
+
+        void ConfigurationUpdated(object sender, EventArgs e)
+        {
+            //ReloadServer();
+        }
+
+        private void ReloadServer()
+        {
+            var isStarted = _ssdpHandler != null;
+
+            if (_config.Configuration.DlnaOptions.EnableServer && !isStarted)
+            {
+                StartServer();
+            }
+            else if (!_config.Configuration.DlnaOptions.EnableServer && isStarted)
+            {
+                DisposeServer();
+            }
+        }
+
+        private readonly object _syncLock = new object();
+        private void StartServer()
+        {
+            var signature = GenerateServerSignature();
+
+            lock (_syncLock)
+            {
+                try
+                {
+                    _ssdpHandler = new SsdpHandler(_logger, _config, signature);
+                }
+                catch (Exception ex)
+                {
+                    _logger.ErrorException("Error starting Dlna server", ex);
+                }
+            }
+        }
+
+        private void DisposeServer()
+        {
+            lock (_syncLock)
+            {
+                if (_ssdpHandler != null)
+                {
+                    try
+                    {
+                        _ssdpHandler.Dispose();
+                    }
+                    catch (Exception ex)
+                    {
+                        _logger.ErrorException("Error disposing Dlna server", ex);
+                    }
+                    _ssdpHandler = null;
+                }
+            }
+        }
+
+        private string GenerateServerSignature()
+        {
+            var os = Environment.OSVersion;
+            var pstring = os.Platform.ToString();
+            switch (os.Platform)
+            {
+                case PlatformID.Win32NT:
+                case PlatformID.Win32S:
+                case PlatformID.Win32Windows:
+                    pstring = "WIN";
+                    break;
+            }
+
+            return String.Format(
+              "{0}{1}/{2}.{3} UPnP/1.0 DLNADOC/1.5 MediaBrowser/{4}",
+              pstring,
+              IntPtr.Size * 8,
+              os.Version.Major,
+              os.Version.Minor,
+              _appHost.ApplicationVersion
+              );
+        }
+
+        public void Dispose()
+        {
+            DisposeServer();
+        }
+    }
+}
diff --git a/MediaBrowser.Dlna/Server/Headers.cs b/MediaBrowser.Dlna/Server/Headers.cs
new file mode 100644
index 000000000..859ae7fbf
--- /dev/null
+++ b/MediaBrowser.Dlna/Server/Headers.cs
@@ -0,0 +1,164 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+
+namespace MediaBrowser.Dlna.Server
+{
+    public class Headers : IDictionary<string, string>
+    {
+        private readonly bool _asIs = false;
+        private readonly Dictionary<string, string> _dict = new Dictionary<string, string>();
+        private readonly static Regex Validator = new Regex(@"^[a-z\d][a-z\d_.-]+$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
+
+        protected Headers(bool asIs)
+        {
+            _asIs = asIs;
+        }
+
+        public Headers()
+            : this(asIs: false)
+        {
+        }
+
+        public int Count
+        {
+            get
+            {
+                return _dict.Count;
+            }
+        }
+        public string HeaderBlock
+        {
+            get
+            {
+                var hb = new StringBuilder();
+                foreach (var h in this)
+                {
+                    hb.AppendFormat("{0}: {1}\r\n", h.Key, h.Value);
+                }
+                return hb.ToString();
+            }
+        }
+        public Stream HeaderStream
+        {
+            get
+            {
+                return new MemoryStream(Encoding.ASCII.GetBytes(HeaderBlock));
+            }
+        }
+        public bool IsReadOnly
+        {
+            get
+            {
+                return false;
+            }
+        }
+        public ICollection<string> Keys
+        {
+            get
+            {
+                return _dict.Keys;
+            }
+        }
+        public ICollection<string> Values
+        {
+            get
+            {
+                return _dict.Values;
+            }
+        }
+
+
+        public string this[string key]
+        {
+            get
+            {
+                return _dict[Normalize(key)];
+            }
+            set
+            {
+                _dict[Normalize(key)] = value;
+            }
+        }
+
+
+        private string Normalize(string header)
+        {
+            if (!_asIs)
+            {
+                header = header.ToLower();
+            }
+            header = header.Trim();
+            if (!Validator.IsMatch(header))
+            {
+                throw new ArgumentException("Invalid header: " + header);
+            }
+            return header;
+        }
+
+        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
+        {
+            return _dict.GetEnumerator();
+        }
+
+        public void Add(KeyValuePair<string, string> item)
+        {
+            Add(item.Key, item.Value);
+        }
+
+        public void Add(string key, string value)
+        {
+            _dict.Add(Normalize(key), value);
+        }
+
+        public void Clear()
+        {
+            _dict.Clear();
+        }
+
+        public bool Contains(KeyValuePair<string, string> item)
+        {
+            var p = new KeyValuePair<string, string>(Normalize(item.Key), item.Value);
+            return _dict.Contains(p);
+        }
+
+        public bool ContainsKey(string key)
+        {
+            return _dict.ContainsKey(Normalize(key));
+        }
+
+        public void CopyTo(KeyValuePair<string, string>[] array, int arrayIndex)
+        {
+            throw new NotImplementedException();
+        }
+
+        public IEnumerator<KeyValuePair<string, string>> GetEnumerator()
+        {
+            return _dict.GetEnumerator();
+        }
+
+        public bool Remove(string key)
+        {
+            return _dict.Remove(Normalize(key));
+        }
+
+        public bool Remove(KeyValuePair<string, string> item)
+        {
+            return Remove(item.Key);
+        }
+
+        public override string ToString()
+        {
+            return string.Format("({0})", string.Join(", ", (from x in _dict
+                                                             select string.Format("{0}={1}", x.Key, x.Value))));
+        }
+
+        public bool TryGetValue(string key, out string value)
+        {
+            return _dict.TryGetValue(Normalize(key), out value);
+        }
+    }
+}
diff --git a/MediaBrowser.Dlna/Server/RawHeaders.cs b/MediaBrowser.Dlna/Server/RawHeaders.cs
new file mode 100644
index 000000000..f57e6b9f3
--- /dev/null
+++ b/MediaBrowser.Dlna/Server/RawHeaders.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Dlna.Server
+{
+    public class RawHeaders : Headers
+    {
+        public RawHeaders()
+            : base(true)
+        {
+        }
+    }
+}
diff --git a/MediaBrowser.Dlna/Server/SsdpHandler.cs b/MediaBrowser.Dlna/Server/SsdpHandler.cs
new file mode 100644
index 000000000..63c2abbec
--- /dev/null
+++ b/MediaBrowser.Dlna/Server/SsdpHandler.cs
@@ -0,0 +1,260 @@
+using MediaBrowser.Controller.Configuration;
+using MediaBrowser.Model.Logging;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+
+namespace MediaBrowser.Dlna.Server
+{
+    public class SsdpHandler : IDisposable
+    {
+        private readonly ILogger _logger;
+        private readonly IServerConfigurationManager _config;
+        private readonly string _serverSignature;
+        private bool _isDisposed = false;
+
+        const string SSDPAddr = "239.255.255.250";
+        const int SSDPPort = 1900;
+
+        private readonly IPEndPoint _ssdpEndp = new IPEndPoint(IPAddress.Parse(SSDPAddr), SSDPPort);
+        private readonly IPAddress _ssdpIp = IPAddress.Parse(SSDPAddr);
+
+        private UdpClient _udpClient;
+
+        private readonly Dictionary<Guid, List<UpnpDevice>> _devices = new Dictionary<Guid, List<UpnpDevice>>();
+
+        public SsdpHandler(ILogger logger, IServerConfigurationManager config, string serverSignature)
+        {
+            _logger = logger;
+            _config = config;
+            _serverSignature = serverSignature;
+
+            Start();
+        }
+
+        private IEnumerable<UpnpDevice> Devices
+        {
+            get
+            {
+                UpnpDevice[] devs;
+                lock (_devices)
+                {
+                    devs = _devices.Values.SelectMany(i => i).ToArray();
+                }
+                return devs;
+            }
+        }
+
+        private void Start()
+        {
+            _udpClient = new UdpClient();
+            _udpClient.Client.UseOnlyOverlappedIO = true;
+            _udpClient.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
+            _udpClient.ExclusiveAddressUse = false;
+            _udpClient.Client.Bind(new IPEndPoint(IPAddress.Any, SSDPPort));
+            _udpClient.JoinMulticastGroup(_ssdpIp, 2);
+            _logger.Info("SSDP service started");
+            Receive();
+        }
+
+        private void Receive()
+        {
+            try
+            {
+                _udpClient.BeginReceive(ReceiveCallback, null);
+            }
+            catch (ObjectDisposedException)
+            {
+            }
+        }
+
+        private void ReceiveCallback(IAsyncResult result)
+        {
+            try
+            {
+                var endpoint = new IPEndPoint(IPAddress.None, SSDPPort);
+                var received = _udpClient.EndReceive(result, ref endpoint);
+
+                if (_config.Configuration.DlnaOptions.EnableDebugLogging)
+                {
+                    _logger.Debug("{0} - SSDP Received a datagram", endpoint);
+                }
+
+                using (var reader = new StreamReader(new MemoryStream(received), Encoding.ASCII))
+                {
+                    var proto = (reader.ReadLine() ?? string.Empty).Trim();
+                    var method = proto.Split(new[] { ' ' }, 2)[0];
+                    var headers = new Headers();
+                    for (var line = reader.ReadLine(); line != null; line = reader.ReadLine())
+                    {
+                        line = line.Trim();
+                        if (string.IsNullOrEmpty(line))
+                        {
+                            break;
+                        }
+                        var parts = line.Split(new char[] { ':' }, 2);
+                        headers[parts[0]] = parts[1].Trim();
+                    }
+
+                    if (_config.Configuration.DlnaOptions.EnableDebugLogging)
+                    {
+                        _logger.Debug("{0} - Datagram method: {1}", endpoint, method);
+                        //_logger.Debug(headers);
+                    }
+
+                    if (string.Equals(method, "M-SEARCH", StringComparison.OrdinalIgnoreCase))
+                    {
+                        RespondToSearch(endpoint, headers["st"]);
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Failed to read SSDP message", ex);
+            }
+
+            if (!_isDisposed)
+            {
+                Receive();
+            }
+        }
+
+        private void RespondToSearch(IPEndPoint endpoint, string req)
+        {
+            if (req == "ssdp:all")
+            {
+                req = null;
+            }
+
+            if (_config.Configuration.DlnaOptions.EnableDebugLogging)
+            {
+                _logger.Debug("RespondToSearch");
+            }
+
+            foreach (var d in Devices)
+            {
+                if (!string.IsNullOrEmpty(req) && req != d.Type)
+                {
+                    continue;
+                }
+
+                SendSearchResponse(endpoint, d);
+            }
+        }
+
+        private void SendSearchResponse(IPEndPoint endpoint, UpnpDevice dev)
+        {
+            var headers = new RawHeaders();
+            headers.Add("CACHE-CONTROL", "max-age = 600");
+            headers.Add("DATE", DateTime.Now.ToString("R"));
+            headers.Add("EXT", "");
+            headers.Add("LOCATION", dev.Descriptor.ToString());
+            headers.Add("SERVER", _serverSignature);
+            headers.Add("ST", dev.Type);
+            headers.Add("USN", dev.USN);
+
+            SendDatagram(endpoint, String.Format("HTTP/1.1 200 OK\r\n{0}\r\n", headers.HeaderBlock), false);
+            _logger.Info("{1} - Responded to a {0} request", dev.Type, endpoint);
+        }
+
+        private void SendDatagram(IPEndPoint endpoint, string msg, bool sticky)
+        {
+            if (_isDisposed)
+            {
+                return;
+            }
+            //var dgram = new Datagram(endpoint, msg, sticky);
+            //if (messageQueue.Count == 0)
+            //{
+            //    dgram.Send();
+            //}
+            //messageQueue.Enqueue(dgram);
+            //queueTimer.Enabled = true;
+        }
+
+        private void NotifyAll()
+        {
+            _logger.Debug("NotifyAll");
+            foreach (var d in Devices)
+            {
+                NotifyDevice(d, "alive", false);
+            }
+        }
+
+        private void NotifyDevice(UpnpDevice dev, string type, bool sticky)
+        {
+            _logger.Debug("NotifyDevice");
+            var headers = new RawHeaders();
+            headers.Add("HOST", "239.255.255.250:1900");
+            headers.Add("CACHE-CONTROL", "max-age = 600");
+            headers.Add("LOCATION", dev.Descriptor.ToString());
+            headers.Add("SERVER", _serverSignature);
+            headers.Add("NTS", "ssdp:" + type);
+            headers.Add("NT", dev.Type);
+            headers.Add("USN", dev.USN);
+
+            SendDatagram(_ssdpEndp, String.Format("NOTIFY * HTTP/1.1\r\n{0}\r\n", headers.HeaderBlock), sticky);
+            _logger.Debug("{0} said {1}", dev.USN, type);
+        }
+
+        private void RegisterNotification(Guid UUID, Uri Descriptor)
+        {
+            List<UpnpDevice> list;
+            lock (_devices)
+            {
+                if (!_devices.TryGetValue(UUID, out list))
+                {
+                    _devices.Add(UUID, list = new List<UpnpDevice>());
+                }
+            }
+
+            foreach (var t in new[] { "upnp:rootdevice", "urn:schemas-upnp-org:device:MediaServer:1", "urn:schemas-upnp-org:service:ContentDirectory:1", "uuid:" + UUID })
+            {
+                list.Add(new UpnpDevice(UUID, t, Descriptor));
+            }
+
+            NotifyAll();
+            _logger.Debug("Registered mount {0}", UUID);
+        }
+
+        internal void UnregisterNotification(Guid UUID)
+        {
+            List<UpnpDevice> dl;
+            lock (_devices)
+            {
+                if (!_devices.TryGetValue(UUID, out dl))
+                {
+                    return;
+                }
+                _devices.Remove(UUID);
+            }
+            foreach (var d in dl)
+            {
+                NotifyDevice(d, "byebye", true);
+            }
+            _logger.Debug("Unregistered mount {0}", UUID);
+        }
+
+        public void Dispose()
+        {
+            _isDisposed = true;
+            //while (messageQueue.Count != 0)
+            //{
+            //    datagramPosted.WaitOne();
+            //}
+
+            _udpClient.DropMulticastGroup(_ssdpIp);
+            _udpClient.Close();
+
+            //notificationTimer.Enabled = false;
+            //queueTimer.Enabled = false;
+            //notificationTimer.Dispose();
+            //queueTimer.Dispose();
+            //datagramPosted.Dispose();
+        }
+    }
+}
diff --git a/MediaBrowser.Dlna/Server/UpnpDevice.cs b/MediaBrowser.Dlna/Server/UpnpDevice.cs
new file mode 100644
index 000000000..96e37eb07
--- /dev/null
+++ b/MediaBrowser.Dlna/Server/UpnpDevice.cs
@@ -0,0 +1,28 @@
+using System;
+
+namespace MediaBrowser.Dlna.Server
+{
+    public sealed class UpnpDevice
+    {
+        public readonly Uri Descriptor;
+        public readonly string Type;
+        public readonly string USN;
+        public readonly Guid Uuid;
+
+        public UpnpDevice(Guid aUuid, string aType, Uri aDescriptor)
+        {
+            Uuid = aUuid;
+            Type = aType;
+            Descriptor = aDescriptor;
+
+            if (Type.StartsWith("uuid:"))
+            {
+                USN = Type;
+            }
+            else
+            {
+                USN = String.Format("uuid:{0}::{1}", Uuid.ToString(), Type);
+            }
+        }
+    }
+}
diff --git a/MediaBrowser.Model/Configuration/DlnaOptions.cs b/MediaBrowser.Model/Configuration/DlnaOptions.cs
index b6398239f..00fdaa444 100644
--- a/MediaBrowser.Model/Configuration/DlnaOptions.cs
+++ b/MediaBrowser.Model/Configuration/DlnaOptions.cs
@@ -4,12 +4,14 @@ namespace MediaBrowser.Model.Configuration
     public class DlnaOptions
     {
         public bool EnablePlayTo { get; set; }
+        public bool EnableServer { get; set; }
         public bool EnableDebugLogging { get; set; }
         public int ClientDiscoveryIntervalSeconds { get; set; }
 
         public DlnaOptions()
         {
             EnablePlayTo = true;
+            EnableServer = true;
             ClientDiscoveryIntervalSeconds = 60;
         }
     }