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using System.Net;
using System.Threading.Tasks;
using Jellyfin.Networking.Configuration;
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)
{
var host = httpContext.Connection.RemoteIpAddress ?? IPAddress.Loopback;
if (!networkManager.IsInLocalNetwork(host) && !serverConfigurationManager.GetNetworkConfiguration().EnableRemoteAccess)
{
return;
}
await _next(httpContext).ConfigureAwait(false);
}
}
}
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