SignalR authentication with webAPI Bearer Token

Question

+i used this solution to implement Token Based Authentication using ASP.NET Web API 2, Owin, and Identity...which worked out excellently well. i used this other solution and this to implement signalR hubs authorization and authentication by passing the bearer token through a connection string, but seems like either the bearer token is not going, or something else is wrong somewhere, which is why am here seeking HELP...these are my codes... QueryStringBearerAuthorizeAttribute: this is the class in charge of verification

using ImpAuth.Entities;
using Microsoft.AspNet.Identity.EntityFramework;
using Microsoft.Owin.Security;
using Microsoft.Owin.Security.OAuth;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using System.Threading.Tasks;
using System.Web;

namespace ImpAuth.Providers
{
    using System.Security.Claims;
    using Microsoft.AspNet.SignalR;
    using Microsoft.AspNet.SignalR.Hubs;
    using Microsoft.AspNet.SignalR.Owin;

    public class QueryStringBearerAuthorizeAttribute : AuthorizeAttribute
    {
        public override bool AuthorizeHubConnection(HubDescriptor hubDescriptor, IRequest request)
        {
            var token = request.QueryString.Get("Bearer");
            var authenticationTicket = Startup.AuthServerOptions.AccessTokenFormat.Unprotect(token);

            if (authenticationTicket == null || authenticationTicket.Identity == null || !authenticationTicket.Identity.IsAuthenticated)
            {
                return false;
            }

            request.Environment["server.User"] = new ClaimsPrincipal(authenticationTicket.Identity);
            request.Environment["server.Username"] = authenticationTicket.Identity.Name;
            request.GetHttpContext().User = new ClaimsPrincipal(authenticationTicket.Identity);
            return true;
        }

        public override bool AuthorizeHubMethodInvocation(IHubIncomingInvokerContext hubIncomingInvokerContext, bool appliesToMethod)
        {
            var connectionId = hubIncomingInvokerContext.Hub.Context.ConnectionId;

            // check the authenticated user principal from environment
            var environment = hubIncomingInvokerContext.Hub.Context.Request.Environment;
            var principal = environment["server.User"] as ClaimsPrincipal;

            if (principal != null && principal.Identity != null && principal.Identity.IsAuthenticated)
            {
                // create a new HubCallerContext instance with the principal generated from token
                // and replace the current context so that in hubs we can retrieve current user identity
                hubIncomingInvokerContext.Hub.Context = new HubCallerContext(new ServerRequest(environment), connectionId);

                return true;
            }

            return false;
        }
    }
}

and this is my start up class....

using ImpAuth.Providers;
using Microsoft.AspNet.SignalR;
using Microsoft.Owin;
using Microsoft.Owin.Cors;
using Microsoft.Owin.Security.Facebook;
using Microsoft.Owin.Security.Google;
//using Microsoft.Owin.Security.Facebook;
//using Microsoft.Owin.Security.Google;
using Microsoft.Owin.Security.OAuth;
using Owin;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
using System.Web.Http;

[assembly: OwinStartup(typeof(ImpAuth.Startup))]

namespace ImpAuth
{
    public class Startup
    {
        public static OAuthAuthorizationServerOptions AuthServerOptions;

        static Startup()
        {
            AuthServerOptions = new OAuthAuthorizationServerOptions
            {
                AllowInsecureHttp = true,
                TokenEndpointPath = new PathString("/token"),
                AccessTokenExpireTimeSpan = TimeSpan.FromMinutes(30),
                Provider = new SimpleAuthorizationServerProvider()
               // RefreshTokenProvider = new SimpleRefreshTokenProvider()
            };
        }

        public static OAuthBearerAuthenticationOptions OAuthBearerOptions { get; private set; }
        public static GoogleOAuth2AuthenticationOptions googleAuthOptions { get; private set; }
        public static FacebookAuthenticationOptions facebookAuthOptions { get; private set; }

        public void Configuration(IAppBuilder app)
        {
            //app.MapSignalR();
            ConfigureOAuth(app);
            app.Map("/signalr", map =>
            {
                // Setup the CORS middleware to run before SignalR.
                // By default this will allow all origins. You can 
                // configure the set of origins and/or http verbs by
                // providing a cors options with a different policy.
                map.UseCors(CorsOptions.AllowAll);
                var hubConfiguration = new HubConfiguration
                {
                    // You can enable JSONP by uncommenting line below.
                    // JSONP requests are insecure but some older browsers (and some
                    // versions of IE) require JSONP to work cross domain
                    //EnableJSONP = true
                    EnableDetailedErrors = true
                };
                // Run the SignalR pipeline. We're not using MapSignalR
                // since this branch already runs under the "/signalr"
                // path.
                map.RunSignalR(hubConfiguration);
            });
            HttpConfiguration config = new HttpConfiguration();
            app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
            WebApiConfig.Register(config);
            app.UseWebApi(config);
        }

        public void ConfigureOAuth(IAppBuilder app)
        {
            //use a cookie to temporarily store information about a user logging in with a third party login provider
            app.UseExternalSignInCookie(Microsoft.AspNet.Identity.DefaultAuthenticationTypes.ExternalCookie);
            OAuthBearerOptions = new OAuthBearerAuthenticationOptions();

            OAuthAuthorizationServerOptions OAuthServerOptions = new OAuthAuthorizationServerOptions()
            {
                AllowInsecureHttp = true,
                TokenEndpointPath = new PathString("/token"),
                AccessTokenExpireTimeSpan = TimeSpan.FromDays(1),
                Provider = new SimpleAuthorizationServerProvider()
            };

            // Token Generation
            app.UseOAuthAuthorizationServer(OAuthServerOptions);
            app.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions());

            //Configure Google External Login
            googleAuthOptions = new GoogleOAuth2AuthenticationOptions()
            {
                ClientId = "1062903283154-94kdm6orqj8epcq3ilp4ep2liv96c5mn.apps.googleusercontent.com",
                ClientSecret = "rv5mJUz0epWXmvWUAQJSpP85",
                Provider = new GoogleAuthProvider()
            };
            app.UseGoogleAuthentication(googleAuthOptions);

            //Configure Facebook External Login
            facebookAuthOptions = new FacebookAuthenticationOptions()
            {
                AppId = "CHARLIE",
                AppSecret = "xxxxxx",
                Provider = new FacebookAuthProvider()
            };
            app.UseFacebookAuthentication(facebookAuthOptions);
        }
    }

}

and this is the knockout plus jquery code on the client....

function chat(name, message) {
    self.Name = ko.observable(name);
    self.Message = ko.observable(message);
}

function viewModel() {
    var self = this;
    self.chatMessages = ko.observableArray();

    self.sendMessage = function () {
        if (!$('#message').val() == '' && !$('#name').val() == '') {
            $.connection.hub.qs = { Bearer: "yyCH391w-CkSVMv7ieH2quEihDUOpWymxI12Vh7gtnZJpWRRkajQGZhrU5DnEVkOy-hpLJ4MyhZnrB_EMhM0FjrLx5bjmikhl6EeyjpMlwkRDM2lfgKMF4e82UaUg1ZFc7JFAt4dFvHRshX9ay0ziCnuwGLvvYhiriew2v-F7d0bC18q5oqwZCmSogg2Osr63gAAX1oo9zOjx5pe2ClFHTlr7GlceM6CTR0jz2mYjSI" };
            $.connection.hub.start().done(function () {
                $.connection.hub.qs = { Bearer: "yyCH391w-CkSVMv7ieH2quEihDUOpWymxI12Vh7gtnZJpWRRkajQGZhrU5DnEVkOy-hpLJ4MyhZnrB_EMhM0FjrLx5bjmikhl6EeyjpMlwkRDM2lfgKMF4e82UaUg1ZFc7JFAt4dFvHRshX9ay0ziCnuwGLvvYhiriew2v-F7d0bC18q5oqwZCmSogg2Osr63gAAX1oo9zOjx5pe2ClFHTlr7GlceM6CTR0jz2mYjSI" };
                $.connection.impAuthHub.server.sendMessage($('#name').val(), $('#message').val())
                            .done(function () { $('#message').val(''); $('#name').val(''); })
                            .fail(function (e) { alert(e) });
            });
        }
    }

    $.connection.impAuthHub.client.newMessage = function (NAME, MESSAGE) {
        //alert(ko.toJSON(NAME, MESSAGE));
        var chat1 = new chat(NAME, MESSAGE);
        self.chatMessages.push(chat1);
    }

}

ko.applyBindings(new viewModel());

and here is my hub class...

using ImpAuth.Providers;
using Microsoft.AspNet.SignalR;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace ImpAuth
{
    public class impAuthHub : Hub
    {
        [QueryStringBearerAuthorize]
        public void SendMessage(string name, string message)
        {

            Clients.All.newMessage(name, message);
        }
    }
}

...now the problem comes when i try to invoke an authenticated hub class and i get this error

caller is not authenticated to invove method sendMessage in impAuthHub

but then i change this method in QueryStringBearerAuthorizeAttribute class to alway return true like this

public override bool AuthorizeHubMethodInvocation(IHubIncomingInvokerContext hubIncomingInvokerContext, bool appliesToMethod)
{
    var connectionId = hubIncomingInvokerContext.Hub.Context.ConnectionId;
    // check the authenticated user principal from environment
    var environment = hubIncomingInvokerContext.Hub.Context.Request.Environment;
    var principal = environment["server.User"] as ClaimsPrincipal;

    if (principal != null && principal.Identity != null && principal.Identity.IsAuthenticated)
    {
        // create a new HubCallerContext instance with the principal generated from token
        // and replace the current context so that in hubs we can retrieve current user identity
        hubIncomingInvokerContext.Hub.Context = new HubCallerContext(new ServerRequest(environment), connectionId);

        return true;
    }

    return true;
}

...it works....WHAT IS THE PROBLEM WITH MY CODE OR IMPLEMENTATION?

Answer 1

You need to configure your signalr like this;

app.Map("/signalr", map =>
{
    map.UseCors(CorsOptions.AllowAll);

    map.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions()
    {
        Provider = new QueryStringOAuthBearerProvider()
    });

    var hubConfiguration = new HubConfiguration
    {
        Resolver = GlobalHost.DependencyResolver,
    };
    map.RunSignalR(hubConfiguration);
});

Then you need to write a basic custom OAuthBearerAuthenticationProvider for signalR which accepts access_token as query string.

public class QueryStringOAuthBearerProvider : OAuthBearerAuthenticationProvider
{
    public override Task RequestToken(OAuthRequestTokenContext context)
    {
        var value = context.Request.Query.Get("access_token");

        if (!string.IsNullOrEmpty(value))
        {
            context.Token = value;
        }

        return Task.FromResult<object>(null);
    }
}

After this all you need is to send access_token with signalr connection as querystring.

$.connection.hub.qs = { 'access_token': token };

And for your hub just ordinary [Authorize] attribute

public class impAuthHub : Hub
{
    [Authorize]
    public void SendMessage(string name, string message)
    {
       Clients.All.newMessage(name, message);
    }
}

Hope this helps. YD.

Answer 2

Can't comment so adding my answer after the comments on Peter's excellent answer.

Did a bit more digging and the user id that I had set in my custom owin authorization provider was hiding here (complete hub method shown).

    [Authorize]
    public async Task<int> Test()
    {
        var claims = (Context.User.Identity as System.Security.Claims.ClaimsIdentity).Claims.FirstOrDefault();
        if (claims != null)
        {
            var userId = claims.Value;

            //security party!
            return 1;
        }

        return 0;
    }

More added for texas697:

Startup.Auth.cs add this to ConfigureAuth() if not already there:

app.Map("/signalr", map =>
    {
        map.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions()
        {
            Provider = new QueryStringOAuthBearerProvider() //important bit!
        });

        var hubConfiguration = new HubConfiguration
        {
            EnableDetailedErrors = true,
            Resolver = GlobalHost.DependencyResolver,
        };
        map.RunSignalR(hubConfiguration);
    });

The custom auth provider looks like this:

public class QueryStringOAuthBearerProvider : OAuthBearerAuthenticationProvider
{
    public override Task RequestToken(OAuthRequestTokenContext context)
    {
        var value = context.Request.Query.Get("access_token");

        if (!string.IsNullOrEmpty(value))
        {
            context.Token = value;
        }

        return Task.FromResult<object>(null);
    }
}