From 7e01cce884b70f4fa1709287bebdd2a85788a962 Mon Sep 17 00:00:00 2001
From: "Joshua M. Boniface" <joshua@boniface.me>
Date: Sun, 13 Dec 2020 16:58:28 -0500
Subject: Merge pull request #4716 from OancaAndrei/syncplay-new-auth-policies

(cherry picked from commit 4f6a585424ac8fc66d1f2d5a7fc71a9e85cd23de)
Signed-off-by: Joshua M. Boniface <joshua@boniface.me>
---
 .../SyncPlay/SyncPlayManager.cs                    | 44 ++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'Emby.Server.Implementations')

diff --git a/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs b/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs
index 1d87036a2..aee959c53 100644
--- a/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs
+++ b/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs
@@ -41,6 +41,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// </summary>
         private readonly ILibraryManager _libraryManager;
 
+        /// <summary>
+        /// The map between users and counter of active sessions.
+        /// </summary>
+        private readonly ConcurrentDictionary<Guid, int> _activeUsers =
+            new ConcurrentDictionary<Guid, int>();
+
         /// <summary>
         /// The map between sessions and groups.
         /// </summary>
@@ -122,6 +128,7 @@ namespace Emby.Server.Implementations.SyncPlay
                     throw new InvalidOperationException("Could not add session to group!");
                 }
 
+                UpdateSessionsCounter(session.UserId, 1);
                 group.CreateGroup(session, request, cancellationToken);
             }
         }
@@ -172,6 +179,7 @@ namespace Emby.Server.Implementations.SyncPlay
                         if (existingGroup.GroupId.Equals(request.GroupId))
                         {
                             // Restore session.
+                            UpdateSessionsCounter(session.UserId, 1);
                             group.SessionJoin(session, request, cancellationToken);
                             return;
                         }
@@ -185,6 +193,7 @@ namespace Emby.Server.Implementations.SyncPlay
                         throw new InvalidOperationException("Could not add session to group!");
                     }
 
+                    UpdateSessionsCounter(session.UserId, 1);
                     group.SessionJoin(session, request, cancellationToken);
                 }
             }
@@ -223,6 +232,7 @@ namespace Emby.Server.Implementations.SyncPlay
                             throw new InvalidOperationException("Could not remove session from group!");
                         }
 
+                        UpdateSessionsCounter(session.UserId, -1);
                         group.SessionLeave(session, request, cancellationToken);
 
                         if (group.IsGroupEmpty())
@@ -318,6 +328,19 @@ namespace Emby.Server.Implementations.SyncPlay
             }
         }
 
+        /// <inheritdoc />
+        public bool IsUserActive(Guid userId)
+        {
+            if (_activeUsers.TryGetValue(userId, out var sessionsCounter))
+            {
+                return sessionsCounter > 0;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
         /// <summary>
         /// Releases unmanaged and optionally managed resources.
         /// </summary>
@@ -343,5 +366,26 @@ namespace Emby.Server.Implementations.SyncPlay
                 JoinGroup(session, request, CancellationToken.None);
             }
         }
+
+        private void UpdateSessionsCounter(Guid userId, int toAdd)
+        {
+            // Update sessions counter.
+            var newSessionsCounter = _activeUsers.AddOrUpdate(
+                userId,
+                1,
+                (key, sessionsCounter) => sessionsCounter + toAdd);
+
+            // Should never happen.
+            if (newSessionsCounter < 0)
+            {
+                throw new InvalidOperationException("Sessions counter is negative!");
+            }
+
+            // Clean record if user has no more active sessions.
+            if (newSessionsCounter == 0)
+            {
+                _activeUsers.TryRemove(new KeyValuePair<Guid, int>(userId, newSessionsCounter));
+            }
+        }
     }
 }
-- 
cgit v1.2.3