Authentication 源代码 (addAuthentication ,useAuthentication )

《ASP.NET Core[源码分析篇] - Authentication认证》：  https://cloud.tencent.com/developer/article/1498055

 《理解ASP.NET Core验证模型(Claim, ClaimsIdentity, ClaimsPrincipal)不得不读的英文博文》

 

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services.AddAuthentication()    参考 ：https://www.cnblogs.com/liyouming/p/9916777.html

  AddAuthentication 源代码：https://github.com/dotnet/aspnetcore/blob/3e1e69eccef4ea54c46c7e706413a0448abbbec9/src/Security/Authentication/Core/src/AuthenticationServiceCollectionExtensions.cs

     实际是： services.AddAuthentication(); 

                 services.Configure(configureOptions);     

              【configureOptions  是一个  Action<AuthenticationOptions> 委托方法。定义如下：https://docs.microsoft.com/zh-cn/dotnet/api/microsoft.aspnetcore.authentication.authenticationoptions?view=aspnetcore-3.1    ]

 

 

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 配置中间件（身份验证）的代码：app.UseAuthentication(); 实际是： app.UseMiddleware<AuthenticationMiddleware>();

public static IApplicationBuilder UseAuthentication(this IApplicationBuilder app)
{
      if (app == null)
     {
          throw new ArgumentNullException(nameof(app));
     }
    return app.UseMiddleware<AuthenticationMiddleware>();
}

AuthenticationMiddleware 源代码 ：https://github.com/dotnet/aspnetcore/blob/v3.1.2/src/Security/Authentication/Core/src/AuthenticationMiddleware.cs

    public class AuthenticationMiddleware

    {

        private readonly RequestDelegate _next;

        public IAuthenticationSchemeProvider Schemes { get; set; }

        public AuthenticationMiddleware(RequestDelegate next, IAuthenticationSchemeProvider schemes)    //构造函数

        {

            if (next == null)

            {

                throw new ArgumentNullException(nameof(next));

            }

            if (schemes == null)

            {

                throw new ArgumentNullException(nameof(schemes));

            }

            _next = next;

            Schemes = schemes;

        }

        public async Task Invoke(HttpContext context)

        {

            context.Features.Set<IAuthenticationFeature>(new AuthenticationFeature

            {

                OriginalPath = context.Request.Path,

                OriginalPathBase = context.Request.PathBase

            });

            // Give any IAuthenticationRequestHandler schemes a chance to handle the request

            var handlers = context.RequestServices.GetRequiredService<IAuthenticationHandlerProvider>();

            foreach (var scheme in await Schemes.GetRequestHandlerSchemesAsync())

            {

                var handler = await handlers.GetHandlerAsync(context, scheme.Name) as IAuthenticationRequestHandler;

                if (handler != null && await handler.HandleRequestAsync())

                {

                    return;

                }

            }

            var defaultAuthenticate = await Schemes.GetDefaultAuthenticateSchemeAsync();

            if (defaultAuthenticate != null)

            {

                var result = await context.AuthenticateAsync(defaultAuthenticate.Name);

                if (result?.Principal != null)

                {

                    context.User = result.Principal;

                }

            }

            await _next(context);

        }

    }

 

 

ASP.NET Core Identity 实战（1）