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52 lines
1.6 KiB
C#
52 lines
1.6 KiB
C#
using System.Net;
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using System.Threading.Tasks;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Common.Net;
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using Microsoft.AspNetCore.Http;
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namespace Jellyfin.Api.Middleware;
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/// <summary>
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/// Validates the IP of requests coming from local networks wrt. remote access.
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/// </summary>
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public class IPBasedAccessValidationMiddleware
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{
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private readonly RequestDelegate _next;
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/// <summary>
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/// Initializes a new instance of the <see cref="IPBasedAccessValidationMiddleware"/> class.
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/// </summary>
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/// <param name="next">The next delegate in the pipeline.</param>
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public IPBasedAccessValidationMiddleware(RequestDelegate next)
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{
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_next = next;
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}
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/// <summary>
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/// Executes the middleware action.
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/// </summary>
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/// <param name="httpContext">The current HTTP context.</param>
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/// <param name="networkManager">The network manager.</param>
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/// <returns>The async task.</returns>
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public async Task Invoke(HttpContext httpContext, INetworkManager networkManager)
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{
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if (httpContext.IsLocal())
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{
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// Running locally.
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await _next(httpContext).ConfigureAwait(false);
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return;
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}
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var remoteIP = httpContext.Connection.RemoteIpAddress ?? IPAddress.Loopback;
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if (!networkManager.HasRemoteAccess(remoteIP))
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{
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// No access from network, respond with 503 instead of 200.
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httpContext.Response.StatusCode = StatusCodes.Status503ServiceUnavailable;
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return;
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}
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await _next(httpContext).ConfigureAwait(false);
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}
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}
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