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jellyfin/Jellyfin.Api/Auth/LocalAccessOrRequiresElevat.../LocalAccessOrRequiresElevat...

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using System.Threading.Tasks;
using Jellyfin.Api.Constants;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Net;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
namespace Jellyfin.Api.Auth.LocalAccessOrRequiresElevationPolicy
{
/// <summary>
/// Local access or require elevated privileges handler.
/// </summary>
public class LocalAccessOrRequiresElevationHandler : AuthorizationHandler<LocalAccessOrRequiresElevationRequirement>
{
private readonly INetworkManager _networkManager;
private readonly IHttpContextAccessor _httpContextAccessor;
/// <summary>
/// Initializes a new instance of the <see cref="LocalAccessOrRequiresElevationHandler"/> class.
/// </summary>
/// <param name="networkManager">Instance of the <see cref="INetworkManager"/> interface.</param>
/// <param name="httpContextAccessor">Instance of the <see cref="IHttpContextAccessor"/> interface.</param>
public LocalAccessOrRequiresElevationHandler(
INetworkManager networkManager,
IHttpContextAccessor httpContextAccessor)
{
_networkManager = networkManager;
_httpContextAccessor = httpContextAccessor;
}
/// <inheritdoc />
protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, LocalAccessOrRequiresElevationRequirement requirement)
{
var ip = _httpContextAccessor.HttpContext?.GetNormalizedRemoteIp();
// Loopback will be on LAN, so we can accept null.
if (ip is null || _networkManager.IsInLocalNetwork(ip))
{
context.Succeed(requirement);
return Task.CompletedTask;
}
if (context.User.IsInRole(UserRoles.Administrator))
{
context.Succeed(requirement);
}
else
{
context.Fail();
}
return Task.CompletedTask;
}
}
}