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jellyfin/Jellyfin.Server/Extensions/ApiServiceCollectionExtensi...

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using Emby.Server.Implementations;
using Jellyfin.Api.Auth;
using Jellyfin.Api.Auth.DefaultAuthorizationPolicy;
using Jellyfin.Api.Auth.DownloadPolicy;
using Jellyfin.Api.Auth.FirstTimeOrIgnoreParentalControlSetupPolicy;
using Jellyfin.Api.Auth.FirstTimeSetupOrDefaultPolicy;
using Jellyfin.Api.Auth.FirstTimeSetupOrElevatedPolicy;
using Jellyfin.Api.Auth.IgnoreParentalControlPolicy;
using Jellyfin.Api.Auth.LocalAccessOrRequiresElevationPolicy;
using Jellyfin.Api.Auth.LocalAccessPolicy;
using Jellyfin.Api.Auth.RequiresElevationPolicy;
using Jellyfin.Api.Constants;
using Jellyfin.Api.Controllers;
using Jellyfin.Api.ModelBinders;
using Jellyfin.Server.Configuration;
using Jellyfin.Server.Filters;
using Jellyfin.Server.Formatters;
using MediaBrowser.Common.Json;
using MediaBrowser.Model.Entities;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Cors.Infrastructure;
using Microsoft.AspNetCore.HttpOverrides;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.OpenApi.Any;
using Microsoft.OpenApi.Interfaces;
using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.SwaggerGen;
using AuthenticationSchemes = Jellyfin.Api.Constants.AuthenticationSchemes;
namespace Jellyfin.Server.Extensions
{
/// <summary>
/// API specific extensions for the service collection.
/// </summary>
public static class ApiServiceCollectionExtensions
{
/// <summary>
/// Adds jellyfin API authorization policies to the DI container.
/// </summary>
/// <param name="serviceCollection">The service collection.</param>
/// <returns>The updated service collection.</returns>
public static IServiceCollection AddJellyfinApiAuthorization(this IServiceCollection serviceCollection)
{
serviceCollection.AddSingleton<IAuthorizationHandler, DefaultAuthorizationHandler>();
serviceCollection.AddSingleton<IAuthorizationHandler, DownloadHandler>();
serviceCollection.AddSingleton<IAuthorizationHandler, FirstTimeSetupOrDefaultHandler>();
serviceCollection.AddSingleton<IAuthorizationHandler, FirstTimeSetupOrElevatedHandler>();
serviceCollection.AddSingleton<IAuthorizationHandler, IgnoreParentalControlHandler>();
serviceCollection.AddSingleton<IAuthorizationHandler, FirstTimeOrIgnoreParentalControlSetupHandler>();
serviceCollection.AddSingleton<IAuthorizationHandler, LocalAccessHandler>();
serviceCollection.AddSingleton<IAuthorizationHandler, LocalAccessOrRequiresElevationHandler>();
serviceCollection.AddSingleton<IAuthorizationHandler, RequiresElevationHandler>();
return serviceCollection.AddAuthorizationCore(options =>
{
options.AddPolicy(
Policies.DefaultAuthorization,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new DefaultAuthorizationRequirement());
});
options.AddPolicy(
Policies.Download,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new DownloadRequirement());
});
options.AddPolicy(
Policies.FirstTimeSetupOrDefault,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new FirstTimeSetupOrDefaultRequirement());
});
options.AddPolicy(
Policies.FirstTimeSetupOrElevated,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new FirstTimeSetupOrElevatedRequirement());
});
options.AddPolicy(
Policies.IgnoreParentalControl,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new IgnoreParentalControlRequirement());
});
options.AddPolicy(
Policies.FirstTimeSetupOrIgnoreParentalControl,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new FirstTimeOrIgnoreParentalControlSetupRequirement());
});
options.AddPolicy(
Policies.LocalAccessOnly,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new LocalAccessRequirement());
});
options.AddPolicy(
Policies.LocalAccessOrRequiresElevation,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new LocalAccessOrRequiresElevationRequirement());
});
options.AddPolicy(
Policies.RequiresElevation,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new RequiresElevationRequirement());
});
});
}
/// <summary>
/// Adds custom legacy authentication to the service collection.
/// </summary>
/// <param name="serviceCollection">The service collection.</param>
/// <returns>The updated service collection.</returns>
public static AuthenticationBuilder AddCustomAuthentication(this IServiceCollection serviceCollection)
{
return serviceCollection.AddAuthentication(AuthenticationSchemes.CustomAuthentication)
.AddScheme<AuthenticationSchemeOptions, CustomAuthenticationHandler>(AuthenticationSchemes.CustomAuthentication, null);
}
/// <summary>
/// Extension method for adding the jellyfin API to the service collection.
/// </summary>
/// <param name="serviceCollection">The service collection.</param>
/// <param name="pluginAssemblies">An IEnumerable containing all plugin assemblies with API controllers.</param>
/// <param name="knownProxies">A list of all known proxies to trust for X-Forwarded-For.</param>
/// <returns>The MVC builder.</returns>
public static IMvcBuilder AddJellyfinApi(this IServiceCollection serviceCollection, IEnumerable<Assembly> pluginAssemblies, IReadOnlyList<string> knownProxies)
{
IMvcBuilder mvcBuilder = serviceCollection
.AddCors()
.AddTransient<ICorsPolicyProvider, CorsPolicyProvider>()
.Configure<ForwardedHeadersOptions>(options =>
{
options.ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto;
for (var i = 0; i < knownProxies.Count; i++)
{
if (IPAddress.TryParse(knownProxies[i], out var address))
{
options.KnownProxies.Add(address);
}
}
})
.AddMvc(opts =>
{
// Allow requester to change between camelCase and PascalCase
opts.RespectBrowserAcceptHeader = true;
opts.OutputFormatters.Insert(0, new CamelCaseJsonProfileFormatter());
opts.OutputFormatters.Insert(0, new PascalCaseJsonProfileFormatter());
opts.OutputFormatters.Add(new CssOutputFormatter());
opts.OutputFormatters.Add(new XmlOutputFormatter());
opts.ModelBinderProviders.Insert(0, new NullableEnumModelBinderProvider());
})
// Clear app parts to avoid other assemblies being picked up
.ConfigureApplicationPartManager(a => a.ApplicationParts.Clear())
.AddApplicationPart(typeof(StartupController).Assembly)
.AddJsonOptions(options =>
{
// Update all properties that are set in JsonDefaults
var jsonOptions = JsonDefaults.GetPascalCaseOptions();
// From JsonDefaults
options.JsonSerializerOptions.ReadCommentHandling = jsonOptions.ReadCommentHandling;
options.JsonSerializerOptions.WriteIndented = jsonOptions.WriteIndented;
options.JsonSerializerOptions.DefaultIgnoreCondition = jsonOptions.DefaultIgnoreCondition;
options.JsonSerializerOptions.NumberHandling = jsonOptions.NumberHandling;
options.JsonSerializerOptions.Converters.Clear();
foreach (var converter in jsonOptions.Converters)
{
options.JsonSerializerOptions.Converters.Add(converter);
}
// From JsonDefaults.PascalCase
options.JsonSerializerOptions.PropertyNamingPolicy = jsonOptions.PropertyNamingPolicy;
});
foreach (Assembly pluginAssembly in pluginAssemblies)
{
mvcBuilder.AddApplicationPart(pluginAssembly);
}
return mvcBuilder.AddControllersAsServices();
}
/// <summary>
/// Adds Swagger to the service collection.
/// </summary>
/// <param name="serviceCollection">The service collection.</param>
/// <returns>The updated service collection.</returns>
public static IServiceCollection AddJellyfinApiSwagger(this IServiceCollection serviceCollection)
{
return serviceCollection.AddSwaggerGen(c =>
{
c.SwaggerDoc("api-docs", new OpenApiInfo
{
Title = "Jellyfin API",
Version = "v1",
Extensions = new Dictionary<string, IOpenApiExtension>
{
{
"x-jellyfin-version",
new OpenApiString(typeof(ApplicationHost).Assembly.GetName().Version?.ToString())
}
}
});
c.AddSecurityDefinition(AuthenticationSchemes.CustomAuthentication, new OpenApiSecurityScheme
{
Type = SecuritySchemeType.ApiKey,
In = ParameterLocation.Header,
Name = "X-Emby-Authorization",
Description = "API key header parameter"
});
// Add all xml doc files to swagger generator.
var xmlFiles = Directory.GetFiles(
AppContext.BaseDirectory,
"*.xml",
SearchOption.TopDirectoryOnly);
foreach (var xmlFile in xmlFiles)
{
c.IncludeXmlComments(xmlFile);
}
// Order actions by route path, then by http method.
c.OrderActionsBy(description =>
$"{description.ActionDescriptor.RouteValues["controller"]}_{description.RelativePath}");
// Use method name as operationId
c.CustomOperationIds(
description =>
{
description.TryGetMethodInfo(out MethodInfo methodInfo);
// Attribute name, method name, none.
return description?.ActionDescriptor?.AttributeRouteInfo?.Name
?? methodInfo?.Name
?? null;
});
// TODO - remove when all types are supported in System.Text.Json
c.AddSwaggerTypeMappings();
c.OperationFilter<SecurityRequirementsOperationFilter>();
c.OperationFilter<FileResponseFilter>();
c.DocumentFilter<WebsocketModelFilter>();
});
}
private static void AddSwaggerTypeMappings(this SwaggerGenOptions options)
{
/*
* TODO remove when System.Text.Json properly supports non-string keys.
* Used in BaseItemDto.ImageBlurHashes
*/
options.MapType<Dictionary<ImageType, string>>(() =>
new OpenApiSchema
{
Type = "object",
AdditionalProperties = new OpenApiSchema
{
Type = "string"
}
});
/*
* Support BlurHash dictionary
*/
options.MapType<Dictionary<ImageType, Dictionary<string, string>>>(() =>
new OpenApiSchema
{
Type = "object",
Properties = typeof(ImageType).GetEnumNames().ToDictionary(
name => name,
name => new OpenApiSchema
{
Type = "object",
AdditionalProperties = new OpenApiSchema
{
Type = "string"
}
})
});
}
}
}