Fix playlist parental control and no parental control skipping forbidden unrated items

Emby.Server.Implementations/Dto/DtoService.cs

@@ -83,13 +83,14 @@ namespace Emby.Server.Implementations.Dto
         /// <inheritdoc />
         public IReadOnlyList<BaseItemDto> GetBaseItemDtos(IReadOnlyList<BaseItem> items, DtoOptions options, User user = null, BaseItem owner = null)
         {
-            var returnItems = new BaseItemDto[items.Count];
+            var accessibleItems = user is null ? items : items.Where(x => x.IsVisible(user)).ToList();
+            var returnItems = new BaseItemDto[accessibleItems.Count];
             var programTuples = new List<(BaseItem, BaseItemDto)>();
             var channelTuples = new List<(BaseItemDto, LiveTvChannel)>();
 
-            for (int index = 0; index < items.Count; index++)
+            for (int index = 0; index < accessibleItems.Count; index++)
             {
-                var item = items[index];
+                var item = accessibleItems[index];
                 var dto = GetBaseItemDtoInternal(item, options, user, owner);
 
                 if (item is LiveTvChannel tvChannel)

MediaBrowser.Controller/Entities/BaseItem.cs

@@ -1534,12 +1534,6 @@ namespace MediaBrowser.Controller.Entities
             }
 
             var maxAllowedRating = user.MaxParentalAgeRating;
-
-            if (maxAllowedRating is null)
-            {
-                return true;
-            }
-
             var rating = CustomRatingForComparison;
 
             if (string.IsNullOrEmpty(rating))
@@ -1549,12 +1543,13 @@ namespace MediaBrowser.Controller.Entities
 
             if (string.IsNullOrEmpty(rating))
             {
+                Logger.LogDebug("{0} has no parental rating set.", Name);
                 return !GetBlockUnratedValue(user);
             }
 
             var value = LocalizationManager.GetRatingLevel(rating);
 
-            // Could not determine the integer value
+            // Could not determine rating level
             if (!value.HasValue)
             {
                 var isAllowed = !GetBlockUnratedValue(user);
@@ -1567,7 +1562,7 @@ namespace MediaBrowser.Controller.Entities
                 return isAllowed;
             }
 
-            return value.Value <= maxAllowedRating.Value;
+            return !maxAllowedRating.HasValue || value.Value <= maxAllowedRating.Value;
         }
 
         public int? GetInheritedParentalRatingValue()
@@ -1627,10 +1622,10 @@ namespace MediaBrowser.Controller.Entities
         }
 
         /// <summary>
-        /// Gets the block unrated value.
+        /// Gets a bool indicating if access to the unrated item is blocked or not.
         /// </summary>
         /// <param name="user">The configuration.</param>
-        /// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
+        /// <returns><c>true</c> if blocked, <c>false</c> otherwise.</returns>
         protected virtual bool GetBlockUnratedValue(User user)
         {
             // Don't block plain folders that are unrated. Let the media underneath get blocked