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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using Jellyfin.Api;
using Jellyfin.Api.Auth;
using Jellyfin.Api.Auth.FirstTimeSetupOrElevatedPolicy;
using Jellyfin.Api.Auth.RequiresElevationPolicy;
using Jellyfin.Api.Constants;
using Jellyfin.Api.Controllers;
using Jellyfin.Server.Formatters;
using Jellyfin.Server.Models;
using MediaBrowser.Common.Json;
using MediaBrowser.Model.Entities;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authorization;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.SwaggerGen;
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, FirstTimeSetupOrElevatedHandler>();
serviceCollection.AddSingleton<IAuthorizationHandler, RequiresElevationHandler>();
return serviceCollection.AddAuthorizationCore(options =>
{
options.AddPolicy(
Policies.RequiresElevation,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new RequiresElevationRequirement());
});
options.AddPolicy(
Policies.FirstTimeSetupOrElevated,
policy =>
{
policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
policy.AddRequirements(new FirstTimeSetupOrElevatedRequirement());
});
});
}
/// <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="baseUrl">The base url for the API.</param>
/// <returns>The MVC builder.</returns>
public static IMvcBuilder AddJellyfinApi(this IServiceCollection serviceCollection, string baseUrl)
{
return serviceCollection
.AddCors(options =>
{
options.AddPolicy(ServerCorsPolicy.DefaultPolicyName, ServerCorsPolicy.DefaultPolicy);
})
.AddMvc(opts =>
{
opts.UseGeneralRoutePrefix(baseUrl);
opts.OutputFormatters.Insert(0, new CamelCaseJsonProfileFormatter());
opts.OutputFormatters.Insert(0, new PascalCaseJsonProfileFormatter());
opts.OutputFormatters.Add(new CssOutputFormatter());
})
// 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.Converters.Clear();
foreach (var converter in jsonOptions.Converters)
{
options.JsonSerializerOptions.Converters.Add(converter);
}
// From JsonDefaults.PascalCase
options.JsonSerializerOptions.PropertyNamingPolicy = jsonOptions.PropertyNamingPolicy;
})
.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" });
c.AddSecurityDefinition(AuthenticationSchemes.CustomAuthentication, new OpenApiSecurityScheme
{
Type = SecuritySchemeType.ApiKey,
In = ParameterLocation.Header,
Name = "X-Emby-Token",
Description = "API key header parameter"
});
var securitySchemeRef = new OpenApiSecurityScheme
{
Reference = new OpenApiReference { Type = ReferenceType.SecurityScheme, Id = AuthenticationSchemes.CustomAuthentication },
};
// TODO: Apply this with an operation filter instead of globally
// https://github.com/domaindrivendev/Swashbuckle.AspNetCore#add-security-definitions-and-requirements
c.AddSecurityRequirement(new OpenApiSecurityRequirement
{
{ securitySchemeRef, Array.Empty<string>() }
});
// 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.HttpMethod}");
// Use method name as operationId
c.CustomOperationIds(description =>
description.TryGetMethodInfo(out MethodInfo methodInfo) ? methodInfo.Name : null);
// TODO - remove when all types are supported in System.Text.Json
c.AddSwaggerTypeMappings();
});
}
private static void AddSwaggerTypeMappings(this SwaggerGenOptions options)
{
/*
* TODO remove when System.Text.Json supports non-string keys.
* Used in Jellyfin.Api.Controller.GetChannels.
*/
options.MapType<Dictionary<ImageType, string>>(() =>
new OpenApiSchema
{
Type = "object",
Properties = typeof(ImageType).GetEnumNames().ToDictionary(
name => name,
name => new OpenApiSchema
{
Type = "string",
Format = "string"
})
});
}
}
}
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