3 files changed, 66 insertions, 1 deletions
diff --git a/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs b/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs
index 953acac80..50b6468db 100644
--- a/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs
+++ b/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs
@@ -42,11 +42,13 @@ namespace Jellyfin.Api.Auth
         /// <param name="claimsPrincipal">Request claims.</param>
         /// <param name="ignoreSchedule">Whether to ignore parental control.</param>
         /// <param name="localAccessOnly">Whether access is to be allowed locally only.</param>
+        /// <param name="requiredDownloadPermission">Whether validation requires download permission.</param>
         /// <returns>Validated claim status.</returns>
         protected bool ValidateClaims(
             ClaimsPrincipal claimsPrincipal,
             bool ignoreSchedule = false,
-            bool localAccessOnly = false)
+            bool localAccessOnly = false,
+            bool requiredDownloadPermission = false)
         {
             // Ensure claim has userId.
             var userId = ClaimHelpers.GetUserId(claimsPrincipal);
@@ -89,6 +91,13 @@ namespace Jellyfin.Api.Auth
                 return false;
             }
 
+            // User attempting to download without permission.
+            if (requiredDownloadPermission
+                && !user.HasPermission(PermissionKind.EnableContentDownloading))
+            {
+                return false;
+            }
+
             return true;
         }
 
diff --git a/Jellyfin.Api/Auth/DownloadPolicy/DownloadHandler.cs b/Jellyfin.Api/Auth/DownloadPolicy/DownloadHandler.cs
new file mode 100644
index 000000000..fcfa55dfe
--- /dev/null
+++ b/Jellyfin.Api/Auth/DownloadPolicy/DownloadHandler.cs
@@ -0,0 +1,45 @@
+using System.Threading.Tasks;
+using Jellyfin.Api.Auth.DefaultAuthorizationPolicy;
+using MediaBrowser.Common.Net;
+using MediaBrowser.Controller.Library;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+
+namespace Jellyfin.Api.Auth.DownloadPolicy
+{
+    /// <summary>
+    /// Download authorization handler.
+    /// </summary>
+    public class DownloadHandler : BaseAuthorizationHandler<DownloadRequirement>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="DownloadHandler"/> class.
+        /// </summary>
+        /// <param name="userManager">Instance of the <see cref="IUserManager"/> interface.</param>
+        /// <param name="networkManager">Instance of the <see cref="INetworkManager"/> interface.</param>
+        /// <param name="httpContextAccessor">Instance of the <see cref="IHttpContextAccessor"/> interface.</param>
+        public DownloadHandler(
+            IUserManager userManager,
+            INetworkManager networkManager,
+            IHttpContextAccessor httpContextAccessor)
+            : base(userManager, networkManager, httpContextAccessor)
+        {
+        }
+
+        /// <inheritdoc />
+        protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, DownloadRequirement requirement)
+        {
+            var validated = ValidateClaims(context.User);
+            if (validated)
+            {
+                context.Succeed(requirement);
+            }
+            else
+            {
+                context.Fail();
+            }
+
+            return Task.CompletedTask;
+        }
+    }
+}
diff --git a/Jellyfin.Api/Auth/DownloadPolicy/DownloadRequirement.cs b/Jellyfin.Api/Auth/DownloadPolicy/DownloadRequirement.cs
new file mode 100644
index 000000000..b0a72a9de
--- /dev/null
+++ b/Jellyfin.Api/Auth/DownloadPolicy/DownloadRequirement.cs
@@ -0,0 +1,11 @@
+using Microsoft.AspNetCore.Authorization;
+
+namespace Jellyfin.Api.Auth.DownloadPolicy
+{
+    /// <summary>
+    /// The download permission requirement.
+    /// </summary>
+    public class DownloadRequirement : IAuthorizationRequirement
+    {
+    }
+}