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MvcCorsMvcCoreBuilderExtensions.cs
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MvcCorsMvcCoreBuilderExtensions.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using Microsoft.AspNetCore.Cors.Infrastructure;
using Microsoft.AspNetCore.Mvc.ApplicationModels;
using Microsoft.AspNetCore.Mvc.Cors;
using Microsoft.Extensions.DependencyInjection.Extensions;
namespace Microsoft.Extensions.DependencyInjection;
/// <summary>
/// Extensions for configuring CORS using an <see cref="IMvcCoreBuilder"/>.
/// </summary>
public static class MvcCorsMvcCoreBuilderExtensions
{
/// <summary>
/// Configures <see cref="IMvcCoreBuilder"/> to use CORS.
/// </summary>
/// <param name="builder">The <see cref="IMvcCoreBuilder"/>.</param>
/// <returns>The <see cref="IMvcCoreBuilder"/>.</returns>
public static IMvcCoreBuilder AddCors(this IMvcCoreBuilder builder)
{
ArgumentNullException.ThrowIfNull(builder);
AddCorsServices(builder.Services);
return builder;
}
/// <summary>
/// Configures <see cref="IMvcCoreBuilder"/> to use CORS.
/// </summary>
/// <param name="builder">The <see cref="IMvcCoreBuilder"/>.</param>
/// <param name="setupAction">An <see cref="Action{MvcOptions}"/> to configure the provided <see cref="CorsOptions"/>.</param>
/// <returns>The <see cref="IMvcCoreBuilder"/>.</returns>
public static IMvcCoreBuilder AddCors(
this IMvcCoreBuilder builder,
Action<CorsOptions> setupAction)
{
ArgumentNullException.ThrowIfNull(builder);
ArgumentNullException.ThrowIfNull(setupAction);
AddCorsServices(builder.Services);
builder.Services.Configure(setupAction);
return builder;
}
/// <summary>
/// Configures <see cref="CorsOptions"/>.
/// </summary>
/// <param name="builder">The <see cref="IMvcCoreBuilder"/>.</param>
/// <param name="setupAction">The configure action.</param>
/// <returns>The <see cref="IMvcCoreBuilder"/>.</returns>
public static IMvcCoreBuilder ConfigureCors(
this IMvcCoreBuilder builder,
Action<CorsOptions> setupAction)
{
ArgumentNullException.ThrowIfNull(builder);
ArgumentNullException.ThrowIfNull(setupAction);
builder.Services.Configure(setupAction);
return builder;
}
// Internal for testing.
internal static void AddCorsServices(IServiceCollection services)
{
services.AddCors();
services.TryAddEnumerable(
ServiceDescriptor.Transient<IApplicationModelProvider, CorsApplicationModelProvider>());
services.TryAddTransient<CorsAuthorizationFilter, CorsAuthorizationFilter>();
}
}