jellyfin/Jellyfin.Api/Middleware/LanFilteringMiddleware.cs
2024-01-06 15:24:17 -07:00

52 lines
1.7 KiB
C#

using System.Net;
using System.Threading.Tasks;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Configuration;
using Microsoft.AspNetCore.Http;
namespace Jellyfin.Api.Middleware;
/// <summary>
/// Validates the LAN host IP based on application configuration.
/// </summary>
public class LanFilteringMiddleware
{
private readonly RequestDelegate _next;
/// <summary>
/// Initializes a new instance of the <see cref="LanFilteringMiddleware"/> class.
/// </summary>
/// <param name="next">The next delegate in the pipeline.</param>
public LanFilteringMiddleware(RequestDelegate next)
{
_next = next;
}
/// <summary>
/// Executes the middleware action.
/// </summary>
/// <param name="httpContext">The current HTTP context.</param>
/// <param name="networkManager">The network manager.</param>
/// <param name="serverConfigurationManager">The server configuration manager.</param>
/// <returns>The async task.</returns>
public async Task Invoke(HttpContext httpContext, INetworkManager networkManager, IServerConfigurationManager serverConfigurationManager)
{
if (serverConfigurationManager.GetNetworkConfiguration().EnableRemoteAccess)
{
await _next(httpContext).ConfigureAwait(false);
return;
}
var host = httpContext.GetNormalizedRemoteIP();
if (!networkManager.IsInLocalNetwork(host))
{
// No access from network, respond with 503 instead of 200.
httpContext.Response.StatusCode = StatusCodes.Status503ServiceUnavailable;
return;
}
await _next(httpContext).ConfigureAwait(false);
}
}