From 459297211ecb435886e8cdde8a6521671ca869f6 Mon Sep 17 00:00:00 2001
From: gion <oancaionutandrei@gmail.com>
Date: Sat, 4 Apr 2020 17:59:16 +0200
Subject: [PATCH] Implement syncplay permissions for a user

---
 .../Syncplay/SyncplayManager.cs               | 41 +++++++++++++++++++
 .../Configuration/SyncplayAccess.cs           | 23 +++++++++++
 MediaBrowser.Model/Users/UserPolicy.cs        |  7 ++++
 3 files changed, 71 insertions(+)
 create mode 100644 MediaBrowser.Model/Configuration/SyncplayAccess.cs

diff --git a/Emby.Server.Implementations/Syncplay/SyncplayManager.cs b/Emby.Server.Implementations/Syncplay/SyncplayManager.cs
index f76d243d58..f6311d098f 100644
--- a/Emby.Server.Implementations/Syncplay/SyncplayManager.cs
+++ b/Emby.Server.Implementations/Syncplay/SyncplayManager.cs
@@ -7,6 +7,7 @@ using Microsoft.Extensions.Logging;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Session;
 using MediaBrowser.Controller.Syncplay;
+using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Syncplay;
 
 namespace Emby.Server.Implementations.Syncplay
@@ -21,6 +22,11 @@ namespace Emby.Server.Implementations.Syncplay
         /// </summary>
         private readonly ILogger _logger;
 
+        /// <summary>
+        /// The user manager.
+        /// </summary>
+        private readonly IUserManager _userManager;
+
         /// <summary>
         /// The session manager.
         /// </summary>
@@ -42,9 +48,11 @@ namespace Emby.Server.Implementations.Syncplay
 
         public SyncplayManager(
             ILogger<SyncplayManager> logger,
+            IUserManager userManager,
             ISessionManager sessionManager)
         {
             _logger = logger;
+            _userManager = userManager;
             _sessionManager = sessionManager;
 
             _sessionManager.SessionEnded += _sessionManager_SessionEnded;
@@ -125,8 +133,16 @@ namespace Emby.Server.Implementations.Syncplay
         /// <inheritdoc />
         public void NewGroup(SessionInfo session)
         {
+            var user = _userManager.GetUserById(session.UserId);
+
+            if (user.Policy.SyncplayAccess != SyncplayAccess.CreateAndJoinGroups)
             {
+                // TODO: shall an error message be sent back to the client?
+                return;
+            }
+
             if (IsSessionInGroup(session))
+            {
                 LeaveGroup(session);
             }
 
@@ -139,6 +155,14 @@ namespace Emby.Server.Implementations.Syncplay
         /// <inheritdoc />
         public void JoinGroup(SessionInfo session, string groupId)
         {
+            var user = _userManager.GetUserById(session.UserId);
+
+            if (user.Policy.SyncplayAccess == SyncplayAccess.None)
+            {
+                // TODO: shall an error message be sent back to the client?
+                return;
+            }
+
             if (IsSessionInGroup(session))
             {
                 if (GetSessionGroup(session).Equals(groupId)) return;
@@ -163,6 +187,8 @@ namespace Emby.Server.Implementations.Syncplay
         /// <inheritdoc />
         public void LeaveGroup(SessionInfo session)
         {
+            // TODO: what happens to users that are in a group and get their permissions revoked?
+
             ISyncplayController group;
             _sessionToGroupMap.TryGetValue(session.Id, out group);
 
@@ -186,6 +212,13 @@ namespace Emby.Server.Implementations.Syncplay
         /// <inheritdoc />
         public List<GroupInfoView> ListGroups(SessionInfo session)
         {
+            var user = _userManager.GetUserById(session.UserId);
+
+            if (user.Policy.SyncplayAccess == SyncplayAccess.None)
+            {
+                return new List<GroupInfoView>();
+            }
+
             // Filter by playing item if the user is viewing something already
             if (session.NowPlayingItem != null)
             {
@@ -207,6 +240,14 @@ namespace Emby.Server.Implementations.Syncplay
         /// <inheritdoc />
         public void HandleRequest(SessionInfo session, SyncplayRequestInfo request)
         {
+            var user = _userManager.GetUserById(session.UserId);
+
+            if (user.Policy.SyncplayAccess == SyncplayAccess.None)
+            {
+                // TODO: same as LeaveGroup
+                return;
+            }
+
             ISyncplayController group;
             _sessionToGroupMap.TryGetValue(session.Id, out group);
 
diff --git a/MediaBrowser.Model/Configuration/SyncplayAccess.cs b/MediaBrowser.Model/Configuration/SyncplayAccess.cs
new file mode 100644
index 0000000000..cddf68c42d
--- /dev/null
+++ b/MediaBrowser.Model/Configuration/SyncplayAccess.cs
@@ -0,0 +1,23 @@
+namespace MediaBrowser.Model.Configuration
+{
+    /// <summary>
+    /// Enum SyncplayAccess.
+    /// </summary>
+    public enum SyncplayAccess
+    {
+        /// <summary>
+        /// User can create groups and join them.
+        /// </summary>
+        CreateAndJoinGroups,
+
+        /// <summary>
+        /// User can only join already existing groups.
+        /// </summary>
+        JoinGroups,
+
+        /// <summary>
+        /// Syncplay is disabled for the user.
+        /// </summary>
+        None
+    }
+}
diff --git a/MediaBrowser.Model/Users/UserPolicy.cs b/MediaBrowser.Model/Users/UserPolicy.cs
index ae2b3fd4e9..cf576c3582 100644
--- a/MediaBrowser.Model/Users/UserPolicy.cs
+++ b/MediaBrowser.Model/Users/UserPolicy.cs
@@ -80,6 +80,12 @@ namespace MediaBrowser.Model.Users
         public string AuthenticationProviderId { get; set; }
         public string PasswordResetProviderId { get; set; }
 
+        /// <summary>
+        /// Gets or sets a value indicating what Syncplay features the user can access.
+        /// </summary>
+        /// <value>Access level to Syncplay features.</value>
+        public SyncplayAccess SyncplayAccess { get; set; }
+
         public UserPolicy()
         {
             IsHidden = true;
@@ -125,6 +131,7 @@ namespace MediaBrowser.Model.Users
             EnableContentDownloading = true;
             EnablePublicSharing = true;
             EnableRemoteAccess = true;
+            SyncplayAccess = SyncplayAccess.CreateAndJoinGroups;
         }
     }
 }