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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 System.Diagnostics.CodeAnalysis;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.OAuth;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.Options;
namespace Microsoft.Extensions.DependencyInjection;
/// <summary>
/// Extension methods to add OAuth authentication.
/// </summary>
public static class OAuthExtensions
{
/// <summary>
/// Adds OAuth 2.0 based authentication to <see cref="AuthenticationBuilder"/> using the specified authentication scheme.
/// </summary>
/// <param name="builder">The <see cref="AuthenticationBuilder"/>.</param>
/// <param name="authenticationScheme">The authentication scheme.</param>
/// <param name="configureOptions">A delegate to configure <see cref="OAuthOptions"/>.</param>
/// <returns>A reference to <paramref name="builder"/> after the operation has completed.</returns>
public static AuthenticationBuilder AddOAuth(this AuthenticationBuilder builder, string authenticationScheme, Action<OAuthOptions> configureOptions)
=> builder.AddOAuth<OAuthOptions, OAuthHandler<OAuthOptions>>(authenticationScheme, configureOptions);
/// <summary>
/// Adds OAuth 2.0 based authentication to <see cref="AuthenticationBuilder"/> using the specified authentication scheme.
/// </summary>
/// <param name="builder">The <see cref="AuthenticationBuilder"/>.</param>
/// <param name="authenticationScheme">The authentication scheme.</param>
/// <param name="displayName">A display name for the authentication handler.</param>
/// <param name="configureOptions">A delegate to configure <see cref="OAuthOptions"/>.</param>
/// <returns>A reference to <paramref name="builder"/> after the operation has completed.</returns>
public static AuthenticationBuilder AddOAuth(this AuthenticationBuilder builder, string authenticationScheme, string displayName, Action<OAuthOptions> configureOptions)
=> builder.AddOAuth<OAuthOptions, OAuthHandler<OAuthOptions>>(authenticationScheme, displayName, configureOptions);
/// <summary>
/// Adds OAuth 2.0 based authentication to <see cref="AuthenticationBuilder"/> using the specified authentication scheme.
/// </summary>
/// <param name="builder">The <see cref="AuthenticationBuilder"/>.</param>
/// <param name="authenticationScheme">The authentication scheme.</param>
/// <param name="configureOptions">A delegate to configure the handler specific options.</param>
/// <returns>A reference to <paramref name="builder"/> after the operation has completed.</returns>
public static AuthenticationBuilder AddOAuth<TOptions, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] THandler>(this AuthenticationBuilder builder, string authenticationScheme, Action<TOptions> configureOptions)
where TOptions : OAuthOptions, new()
where THandler : OAuthHandler<TOptions>
=> builder.AddOAuth<TOptions, THandler>(authenticationScheme, OAuthDefaults.DisplayName, configureOptions);
/// <summary>
/// Adds OAuth 2.0 based authentication to <see cref="AuthenticationBuilder"/> using the specified authentication scheme.
/// </summary>
/// <param name="builder">The <see cref="AuthenticationBuilder"/>.</param>
/// <param name="authenticationScheme">The authentication scheme.</param>
/// <param name="displayName">A display name for the authentication handler.</param>
/// <param name="configureOptions">A delegate to configure the handler specific options.</param>
/// <returns>A reference to <paramref name="builder"/> after the operation has completed.</returns>
public static AuthenticationBuilder AddOAuth<TOptions, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] THandler>(this AuthenticationBuilder builder, string authenticationScheme, string displayName, Action<TOptions> configureOptions)
where TOptions : OAuthOptions, new()
where THandler : OAuthHandler<TOptions>
{
builder.Services.TryAddEnumerable(ServiceDescriptor.Singleton<IPostConfigureOptions<TOptions>, OAuthPostConfigureOptions<TOptions, THandler>>());
return builder.AddRemoteScheme<TOptions, THandler>(authenticationScheme, displayName, configureOptions);
}
}
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