1 files changed, 46 insertions, 0 deletions
diff --git a/Jellyfin.Api/Auth/LocalNetworkAccessPolicy/LocalNetworkAccessHandler.cs b/Jellyfin.Api/Auth/LocalNetworkAccessPolicy/LocalNetworkAccessHandler.cs
new file mode 100644
index 000000000..d691c5594
--- /dev/null
+++ b/Jellyfin.Api/Auth/LocalNetworkAccessPolicy/LocalNetworkAccessHandler.cs
@@ -0,0 +1,46 @@
+using System.Threading.Tasks;
+using MediaBrowser.Common.Net;
+using MediaBrowser.Controller.Library;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+
+namespace Jellyfin.Api.Auth.LocalNetworkAccessPolicy
+{
+    /// <summary>
+    /// Local access handler.
+    /// </summary>
+    public class LocalNetworkAccessHandler : BaseAuthorizationHandler<LocalNetworkAccessRequirement>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="LocalNetworkAccessHandler"/> 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 LocalNetworkAccessHandler(
+            IUserManager userManager,
+            INetworkManager networkManager,
+            IHttpContextAccessor httpContextAccessor)
+            : base(userManager, networkManager, httpContextAccessor)
+        {
+        }
+
+        /// <inheritdoc />
+        protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, LocalNetworkAccessRequirement requirement)
+        {
+            var ip = HttpContextAccessor.HttpContext?.Connection.RemoteIpAddress;
+
+            // Loopback will be on LAN, so we can accept null.
+            if (ip == null || NetworkManager.IsInLocalNetwork(ip))
+            {
+                context.Succeed(requirement);
+            }
+            else
+            {
+                context.Fail();
+            }
+
+            return Task.CompletedTask;
+        }
+    }
+}