I have a asp.net web api, that's been consumed by a ionic app.
This web api have some routes that need authorization and others that not.
is there anyway to configure the web api just to be consumed by the ionic app?
Any help would be appreciated.
Thanks
This spreads in a wide scope. However irrespective of the back end API (Asp.net), you are asking how to authenticate an ionic app with back end API.
Basically u have main 3 options
1 - Using an existing Authentication implementation like OAuth2
basically you have to implement an Oauth2 server from your back end and have an ionic client to communicate with it
You will find some server libraries for .net in the OAuth2 web site
For client , you can use ng-cordova-oauth
2 - Let the Authentication handled by a 3rd party provider like (google)
What you can basically do it, let user to login through Ex: there google account,
send the api token to your back end api (in the first request)
Let the back end api validate the key with same provider
3 - Roll out your own authentication service
DONT :),
Try to implement a simple authentication service. But not the best way to go
HTH
Related
I have an old web app that uses Forms Authentication that we've converted to support SAML using Shibboleth. This part is complete and works fine. The app redirects to login.microsoftonline.com, allows a login against the customer's AD (hburg.kyschools.us), and redirects back to the app which now allows the authenticated user in.
The web app also has some ASP.NET Web API controllers that we'd like to authenticate the same way. This also seems to work when the controllers are accessed from a browser that has already logged in. So far, so good.
Now we want to access these Web API controllers from a WPF app. The WPF app has been accessing them for years but just using Basic Authentication. Looking for an example, I found this project on github that shows how to use MSAL:
https://github.com/Azure-Samples/active-directory-dotnet-desktop-msgraph-v2
This project will acquire a token via MSAL and then use it with HttpClient to call a web service. I can run this project and use it to log in to the same AD as above (hburg.kyschools.us). And then it can use HttpClient to access MS Graph.
Now, when instead I try to have the project call into my Web API controller using HttpClient, passing in the same token I received back from the hburg.kyschools.us AD, I get back the Log In page at login.microsoftonline.com, as if I haven't authenticated.
Can I use MSAL to get a token this way that can be used to access my web api via HttpClient from WPF? It seems like I'd need to tell MSAL that I want the token to include authorization for the web app. Is that done somehow in the scopes parameter?
I'm trying to figure out which is the ouath2 scenario of my application and how to call Graph APIs in the behalf of a user with SSO.
My app is composed like this:
angular js (anonimous) -> .NET REST Web APIs (Kerberos)
so I have an anonimous client that calls Web APIs using Kerberos as authentication,
and what I need to do is to call Azure to get a oauth2 token from inside those Web APIs.
the idea is to use the context given by Kerberos to impersonate the user and use the
var auth = app.AcquireTokenByIntegratedWindowsAuth(scopes).ExecuteAsync()
method of the MSAL Library.
Is this the correct approach? Or should I change the flow?
I was also reading that AcquireTokenByIntegratedWindowsAuth would deadlock if not called in the UI Thread, being this a simple Web API project, could this happens in anyway?
I have an angular 2 app, a Web API with OWIN Pipeline (.NET 4.6) and an ADFS 3.0. Every user who uses the angular 2 app needs to be authenticated and authorized via ADFS and if he's already logged in the domain he should be logged in to the Application automatically (Single Sign On)
Something like that:
I read tons of links and code on how to achieve that but I fail to put the pieces together.
As far as I understand ADFS 3.0 only supports OAuth 2 Authorization Code Flow which is either not supported or advised with a JS Application respectively on the Web per se.
I'm not quite sure which it is but the fact is I can't/shouldn't use it.
I understood that therefore I have to implement somekind of Authentication server on my Webserver where my Web API is (maybe IdentityServer 3 or something "homemade").
This lead me to think that I should use ADFS as an external login like google, or facebook which would lead to the following workflow
User requests token
Web API checks if user is already logged in to the domain
Logged in?
forward request to ADFS and verify.
ADFS returns OAuth Token to WebAPI
not logged in?
show login mask to user
forward request to ADFS and verify.
ADFS returns OAuth Token to WebAPI
Web API return OAuth Token to user
Is this even correct or am I completly off?
Anyway I fail to put the pieces to together.
I saw a lot of code which creates JWT Tokens in Web API (but doesn't communicate with ADFS) or communicates with ADFS via WS-Federation.
Additionally ADFS' OAuth 2 implementation seems to a bit special which adds another layer of complexity.
so my question would be:
How can I provide OAuth tokens to the user while authenticating against ADFS?
If you need any additional information I happily provide it
You will need ADFS 2016 which supports Single Page Apps that use Angular.JS. See https://technet.microsoft.com/en-us/windows-server-docs/identity/ad-fs/development/single-page-application-with-ad-fs for the flow and sample code.
You are right that ADFS 2012R2 only support authorization code flow which is only meant for native apps which are public clients to talk to a web api.
Thanks
//Sam (Twitter: #MrADFS)
I want to use Ionic to connect with a Laravel rest API. As far as I know I should use OAuth to authenticate the user. How does this stop other clients/requests from accessing my rest API?
For instance if someone created another Ionic app or anything and requested a OAuth token.
AFAIK there's still no way to perfectly protect your API source. As you mentioned, OAuth is one way to help protection.
I often use JWT, aka. JSON Web Token with token-refresh which expires right after one use. You can check out my short tutorial on using JWT with Laravel and AngularJS, which is absolutely same with Ionic.
Ok, the situation is this.
We already have an existing ASP.NET MVC 5 site with Custom Forms Authentication, Logon, Registration etc with a custom database for roles and profiles already implemented.
We now are adding some new functionality to the MVC site and we decided to use Web Api 2 OData 3 endpoint which lives in another domain. The Web Api currently doesn't include any authentication but we need to be able to map the requests to a certain user to get his roles etc from the backend. The MVC and API sites use the same backend.
What we would like to accomplish is, that when the user logs on in the MVC site, the MVC site calls the Web Api server-to-server with the user's credentials and receives a token that the client can then use to call the web service with.
When API receives a request with the token, it can then map the request with the user in backend and do authorization.
As far as I understand it, Simple Web Token (SWT) could pull it through. But considering the environment, .NET 4.5.1 / Web Api 2 / OData 3 with Entity Framework in Azure Web Role, I started thinking is this SWT something I should really use or if there is any NEW technologies recently published that could easily pull this through. I don't want to add any unnecessary 3rd party dependencies to the project if the .NET stack already contains something like it.
So, what would be the simplest way of pulling this kind of authentication through without adding unnecessary dependencier to the project.
The solution we are looking for, is only temporary meanwhile we redesign our authentication scheme. So we are looking for something really simple to implement that works with least dependencies that need to be removed later on.
I'm using this in a project I'm currently working on. I use the OAuth 2.0 OWIN Middleware component that ships with Web API 2.0 (if you add a new Web API project with Authentication enabled, it includes the base infrastructure).
You would use the Resource Owner Password Flow as defined in the OAuth 2.0 specification. Basically you request a Token from the Web API OWIN Middleware sending:
client_id - identifies your MVC endpoint
client_secret - identifier your MVC endpoint
username
password
And in response you get a bearer token. The token generating is based upon a claims principal, the OAuth middleware component has predefined hooks for adding claims. This token now needs to be added as authorisation header to each response. On the MVC side you might add this to session so that it's always available to make backend API calls in the context of the user associated with an incoming HTTP request. If you're using WCF Data Services Client, you'll need an authorisation service/manager or similar that you can hook into OnRequestSending and OnResponseReceived events, so that you can insert that bearer token into the HTTP headers.
You can customise the OAuth Middleware component as you need to quite easily, it took a bit of time to figure it out as it's not too well documented, but downloading the Katana source code did help a bit as the source code does have some good documentation.
The nice thing about it all is that you simply need to enable HostAuthenticationFilter and add Authorize attributes on the Web API side and it's ready to go. You can get access to the claims principal object and use claims as identifying pieces of information for your user - e.g. identity, roles, other attributes etc.
To get started, look at http://www.asp.net/vnext/overview/authentication/individual-accounts-in-aspnet-web-api
Also as a wrap, I did consider the use of JSON Web Tokens (JWTs) as there is an OWIN library available for generating and parsing these. The use case here would be that you authenticate, get a JWT back, and then use the JWT to get an OAuth 2.0 bearer token. The JWT is useful if you want to move authentication elsewhere, or if you want to get additional information about the user at the MVC side of things.