Get username within startup.cs in Asp.net core

Question

I'm using Asp.net Core Authorization and I need to get username within startup.cs but I got null.

public void ConfigureServices(IServiceCollection services)
{        
    // some code here
    services.AddHttpContextAccessor();
    services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
    services.AddHttpContextAccessor();
            services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            Audit.Core.Configuration.Setup()
                .UseEntityFramework(_ => _
                    .AuditTypeMapper(t => typeof(AuditLog))
                    .AuditEntityAction<AuditLog>((ev, entry, entity) =>
                    {
                        var svcProvider = services.BuildServiceProvider();
                        var httpContext = svcProvider.GetService<IHttpContextAccessor>().HttpContext;

                        entity.AuditData = JsonConvert.SerializeObject(entry);
                        entity.EntityType = entry.EntityType.Name;
                        entity.AuditDate = DateTime.Now;
                        entity.AuditUser = httpContext.User.Identity.Name;
                    })
                .IgnoreMatchedProperties(true));
}

The application startup runs before any other middleware/handler/whatever runs, so whoever is executing the request that starts up the application isn't authenticated yet. — CodeCaster, Nov 20 '18 at 14:41
How are you authenticating? Can you get the username from the token? — bobek, Nov 20 '18 at 14:55
I suppose that AuditEntityAction is not run on startup, but only when audit event occurs - and therefore you do not have to worry to know user in startup code. @Javad do you have any errors with the code? — Grzesiek Danowski, Nov 20 '18 at 15:51
I'm using asp.net core authentication and I have no errors. when any insert/update occurs this line entity.AuditUser = httpContext.User.Identity.Name; and codes above run but username is null. idont know how to get username from jwt token if possible. — Javad Memariani, Nov 20 '18 at 16:45

score 0 · Accepted Answer · answered Nov 21 '18 at 08:25

0

I found the problem why httpContext.User.Identity.Name is always empty. for each request to server the header should have Authorization header like below:

Key                Value
Authorization      Bearer ZQ0QZFANcPogvA...

without Bearer httpContext is always null. not bad to visit this link

answered Nov 21 '18 at 08:25

Javad Memariani

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1
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It depends on the authentication method, for example if you use windows authentication user token is sended as cookie. Simply previously you have anonymous requests. – Grzesiek Danowski Nov 21 '18 at 12:02

Get username within startup.cs in Asp.net core

1 Answers1