Maarten Balliauw {blog}

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A Glimpse at Windows Identity Foundation claims

For a current project, I’m using Glimpse to inspect what’s going on behind the ASP.NET covers. I really hope that you have heard about the greatest ASP.NET module of 2011: Glimpse. If not, shame on you! Install-Package Glimpse immediately! And if you don’t know what I mean by that, NuGet it now! (the greatest .NET addition since sliced bread).

This project is also using Windows Identity Foundation. It’s really a PITA to get a look at the claims being passed around. Usually, I do this by putting a breakpoint somewhere and inspecting the current IPrincipal’s internals. But with Glimpse, using a small plugin to just show me the claims and their values is a no-brainer. Check the right bottom of this '(partial) screenshot:

Glimpse Windows Identity Foundation

Want to have this too? Simply copy the following class in your project and you’re done:

1 [GlimpsePlugin()] 2 public class GlimpseClaimsInspectorPlugin : IGlimpsePlugin 3 { 4 public object GetData(HttpApplication application) 5 { 6 // Return the data you want to display on your tab 7 var data = new List<object[]> { new[] { "Identity", "Claim", "Value", "OriginalIssuer", "Issuer" } }; 8 9 // Add all claims found 10 var claimsPrincipal = application.User as ClaimsPrincipal; 11 if (claimsPrincipal != null) 12 { 13 foreach (var identity in claimsPrincipal.Identities) 14 { 15 foreach (var claim in identity.Claims) 16 { 17 data.Add(new object[] { identity.Name, claim.ClaimType, claim.Value, claim.OriginalIssuer, claim.Issuer }); 18 } 19 } 20 } 21 22 return data; 23 } 24 25 public void SetupInit(HttpApplication application) 26 { 27 } 28 29 public string Name 30 { 31 get { return "WIF Claims"; } 32 } 33 }

Enjoy! And if you feel like NuGet-packaging this (or including it with Glimpse), feel free.

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