3

I created a provider hosted app for SharePoint 2013(OnPrem) which works with the standard "Tokenhelper.cs" to connect to SharePoint.

I use a certificate for authorization which works fine on my app.

Now I also have a TimerJob on the same machine, that needs to communicate with SharePoint. In my TimerJob I do not have any httpContext obviously, which is needed to use the following code:

var spContext = SharePointContextProvider.Current.GetSharePointContext(HttpContext.Current);
using (var appContext = spContext.CreateAppOnlyClientContextForSPHost()) {}
var web=appContext.Web;
clientContext.Load(web);
clientContext.ExecuteQuery();

I can connect using credentials instead:

var appContext= new ClientContext(siteUri);
appContext.Credentials = new NetworkCredential(username, password);
var web=appContext.Web;
clientContext.Load(web);
clientContext.ExecuteQuery();

But I do not want to use any credentials but pure Certificate authentication instead. How can this be done?

4

You can use below method from TokenHelper:

var SPHostUrl = new Uri("http://your_sp_farm/sites/your_site");
var accessToken = TokenHelper.GetS2SAccessTokenWithWindowsIdentity(SPHostUrl, null);
using(var clientContext = TokenHelper.GetClientContextWithAccessToken(SPHostUrl.AbsoluteUri, accessToken)){...}  

You also need to create app.config for you job (I'm assuming that's console app) and put into the same appSettings as for normal web application (ClientSigningCertificatePath, etc.)

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