I've been studying ASP.NET 5 for some time now and there is something I'm yet confused. To implement authentication in Web API 2 what I used to do was basically use the OWIN OAuth Authentication Server Middleware. It was simple to use, I could configure just what I needed and there wasn't a bunch of stuff I needed to put on the app without need for it.
Now, at first I didn't find this in ASP.NET 5 and I thought it was a matter of time to wait the middleware to show up. But yesterday, reading on the issues on the Security repo I found out that apparently there is no intention to port this middleware to the new version of the framework.
Instead, it seems people are encouraged to use Identity Server 3. I took a look on the project and although it is nice and has many usages I really prefer to configure just the minimum I need sometimes. Also, another drawback is that Identity Server 3 needs the full CLR, so if I need to use it in order to provide authentication on my application I would need to stop using Core CLR, which for me is a huge disadvantage since Core CLR is a lot more lightweight.
So, if I don't want to use the Identity Server 3 on ASP.NET 5, how can I implement authentication for Web API if the OAuth Authentication Server middleware is gone? Has anyone been through that and found a way to deal with it?
How to deal with authentication on ASP.NET 5 Web API without using Identity Server 3?
Indeed, there'll be no OAuthAuthorizationServerMiddleware in ASP.NET 5.
If you're looking for the same low-level approach, you should take a look at AspNet.Security.OpenIdConnect.Server: it's an advanced fork of the OAuth2 authorization server middleware that comes with Katana 3 but that targets OpenID Connect, as you already figured out (
OAuth Authorization Service in ASP.NET Core).
https://github.com/aspnet-contrib/AspNet.Security.OpenIdConnect.Server
OpenID Connect is itself based on OAuth2 and is basically a superset offering standardized authentication features. Don't worry: you can, of course, use ANY OAuth2 client with ANY OpenID Connect server, including AspNet.Security.OpenIdConnect.Server.
Don't miss the MVC 6 sample: https://github.com/aspnet-contrib/AspNet.Security.OpenIdConnect.Server/tree/dev/samples/Mvc
app.UseJwtBearerAuthentication(new JwtBearerOptions
{
AutomaticAuthenticate = true,
AutomaticChallenge = true,
Audience = "http://localhost:54540/",
Authority = "http://localhost:54540/"
});
app.UseOpenIdConnectServer(options =>
{
options.Provider = new AuthorizationProvider();
});
Good luck, and don't hesitate to ping me if you need help.
I ran into the exact same issue when trying to use the OWIN OAuth Authorization Server middleware in ASP.NET 5, so I decided to port the code myself. You can find the source at this GitHub repo https://github.com/XacronDevelopment/oauth-aspnet or just use the NuGet packages OAuth.AspNet.AuthServer and OAuth.AspNet.Tokens. Check out the source code to see how things are wired up; the samples in the source are the same samples Microsoft created here http://bit.ly/1MOGDEJ except with ASP.NET 5 examples added.
Related
I have an existing MVC application that I inherited from someone else.
I am now trying to take some of the API calls from the old application and move them into a new application.
The problem is, when the MVC application tries to call the API calls in the new application, it gets a 401.2 (unauthorised) response.
I have read that 401.2 means that the front end and the back end are using different authentication protocols, which would make sense to me.
Here is a snip of the response headers for the account call in the new application:
and here is a snip of the same response headers when calling the same API from the old application:
This looks to me like they are using different protocols - am I correct? The main difference seems to be the 'WWW-Authenticate:Negotiate' on the failed request - but I do not know how I can fix this?
If so, can anyone advise what I need to change in my MVC project to make it use the Auth type of the first project?
Both aps use the same database if that is any help?
I know this question is a bit vague, but I have no idea where to look to fix this.
Any help would be greatly appreciated...
You would need a Single Sign-on to maintain your credentials through different apps, you could:
Use Identity Server 4 or Identity Server 3 To generate token credentials for you WEB API Projects.
MVC
JS
User Forms authentication on your mvc Projects:
Example
Use cookie based Authorization:
Cookie authorization with OWIN
I recommend Using Identity Server.
I'm developing some small services that interact with a .net framework application. These services have UI components that require authentication and will be hosted separately, but we have a requirement to use the existing login page. I'm hoping to set up IdentityServer4 as an authorization authority, and set up the legacy application as a OIDC provider.
The problem is that I have yet to find any information on how to do that in .net framework. I can't convert the legacy application to use .net core or owin hosting, which rules out identityserver3/4 as providers. DotNetOpenAuth is not certified as a provider and does not appear to provide a standard openid interface.
What libraries or patterns can I use to solve this problem?
EDIT: after some review, what I'm mostly looking for is a middleware that would let me convert a webforms authentication to an OIDC identity.
Well.. you can start by reading http://openid.net/specs/openid-connect-core-1_0.html..
I faced the same problem a month back..
There are probably 4-6 specification documents that are dependent on this. you would have to read those as well (there is no shortcut) and you might want to start by making sequence diagrams on the get and post requests..
Amongst all this , read and implement a small jwt project which will help clear out your conception on how bearer tokens are used ( this involves how to create and validate bearer tokens)
Once you know jwt and have the sequence diagrams with you.. you can make improvisations and add more parameters..OpenId would seem relatively simpler
Also, do not forget to test your application with a third party client like postman or fiddler.
Hope this helps! All the best.
I have some issues with authentication and authorization in Asp.Net Core.
My aim is to use the [Authorize] attributes of Asp.Net core for controlling access to an Web API.
Unfortunately only a LDAP and SAMBA server are available for user managment.
Is there any simple way to integrate one of these with Asp.Net Core?
Or is there any workaround, e.g. a simple OAuth 2 provider that just needs to be plugged onto LDAP or SAMBA?
I tried IdentityServer 3 and 4 but all documentation and samples have a lot of UI related code, so I cannot really find the keypoints of using it.
At the moment only a backend exists, so a sample or way to achiev this without any GUI component would be ideal.
We have a whole bunch of clients that want us to start using their ADFS to allow their users into our web app using Single-Sign-On.
After reading up on WIF (which seemed to be the solution at first but is deprecated in VS 2013...), OWIN, oAuth, OpenID Connect, I'm completely confused as to the simplest way to implement SSO.
What is the best and simplest technology to use to implement SSO on an existing VS 2013 json restful service written in C#?
Ideally the technology would already be part of .NET.
Are there any code samples or tutorials out there for this scenario?
assuming that you want to consume your service from native clients, I would recommend that you protect your service using Web API middleware (which was already supported via OWIN middleware in VS2013) and implement your clients using the ADAL library. For a post specifically on ADAL and ADFS, see this. For more details on the Web API side of the solution, see this. If you want to target a variety of client platforms, you can find a complete collection of samples (for Azure AD, but easy to modify for ADFS) here.
This can be implemented through WSO2 IS as Relying Party in ADFS. When we will implement this setup the outcome/Income claims will be main source for User Profile load to WSO2IS for authentication and pass the SAML Response to SP(End URL of your application).
Refer the below links to configure WSO2 IS as relying party for ADFS and WSO2 IS configuration too.
https://omindu.wordpress.com/2015/06/19/setting-ad-fs-3-0-as-federated-authenticator-in-wso2-identity-server/
SSO would mean its Active Directory driven, or direct to IIS machine.config authentication instead of a web.config, but also considering the "simplest technology" you've mentioned, then this must be a call for something simple yet you can transform into what you really desire.
With this, we can refer to token-based web services authentication.
Here's a sample project from which I started and able to transform into something else. From here I think you can then change all authentications into AD or DB connect, or even both across your web services.
http://www.codeproject.com/Articles/9348/Web-Service-Authentication?fid=145460&df=90&mpp=25&prof=False&sort=Position&view=Normal&spc=Relaxed&fr=26#xx0xx
hopefully this would help.
Hey SO, in the past few hours I was trying to get my head around RESTful services that can be served via asp.net MVC. Authentication is still something that doesn't seem to be covered in all those tutorials and guides i was finding in the interwebs.
Currently we are using Forms Based Authentication in our existing MVC Application. As far as I understand we need to add Basic HTTP Authentication to be able to handle REST requests and user permissions connected to the user context. Is there any way to "mix" these two Authentication Modes in one Application?
I'm not sure if there's anything built in, but you can write your own. Something like:
var authHeader = Request.ServerVariables["HTTP_AUTHORIZATION"];
if (authHeader.StartsWith("Basic ", StringComparison.InvariantCultureIgnoreCase))
{
var authParams = Encoding.Default.GetString(Convert.FromBase64String(authHeader.Substring("Basic ".Length)));
var arr = authParams.Split(':');
var username = arr[0];
var password = arr[1];
}
If you're writing your own REST framework in MVC, you could have a base Controller class, and have a method similar to this that runs before each action to authenticate the caller.
Dave,
I understand your point. Membership framework uses cookie extensively for authentication. You pass your credentials to server, server validates them against user database and issue you an authentication cookie. Next time every call of urs contains this authentication cookie which server uses to authenticate and authorise the user. Now whole this workflow works seamlessly when you use browsers.
Now in your scenario, you can create an Action in a controller which validates credentials. You can pass credentials to this Action in either post/get data. You will have to save the authentication cookie in your code and include that each time when making a call to the server . You can override HttpWebRequest class to perform these steps and you can use same class in your code.
In case this is much of an overhead and you are looking for something like Web-Services sort of functionality, I will advice you to look into WCF Services / Ado.NET Data Services. These integrate with Membership framework more seamlessly and may be better suited to your results.
I hope this helps, thanks.
You can easily use ASP.NET membership framework with ASP.NET MVC RESTful services. See the following link for its implementation with MVC RESTful services.
http://msdn.microsoft.com/en-us/magazine/dd943053.aspx
In case you are not aware of membership framework use following link
http://msdn.microsoft.com/en-us/library/yh26yfzy.aspx
I hope it helps, thanks