From 62eea365e8835323230c32eff6ec9b7b78cc1be0 Mon Sep 17 00:00:00 2001
From: Brock Allen <brockallen@gmail.com>
Date: Thu, 22 Dec 2016 14:50:05 -0500
Subject: [PATCH] log claim types that were filtered from profile service

---
 src/IdentityServer4/Constants.cs                     | 2 +-
 src/IdentityServer4/Services/DefaultClaimsService.cs | 8 +++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/IdentityServer4/Constants.cs b/src/IdentityServer4/Constants.cs
index 42503a9974..72892afb9f 100644
--- a/src/IdentityServer4/Constants.cs
+++ b/src/IdentityServer4/Constants.cs
@@ -283,7 +283,7 @@ public class Filters
             };
 
             // filter list for claims returned from profile service prior to creating tokens
-            public static readonly string[] ClaimsProviderFilterClaimTypes = new string[]
+            public static readonly string[] ClaimsServiceFilterClaimTypes = new string[]
             {
                 // TODO: consider JwtClaimTypes.AuthenticationContextClassReference,
                 JwtClaimTypes.AccessTokenHash,
diff --git a/src/IdentityServer4/Services/DefaultClaimsService.cs b/src/IdentityServer4/Services/DefaultClaimsService.cs
index c74072b9b7..4bd67f1310 100644
--- a/src/IdentityServer4/Services/DefaultClaimsService.cs
+++ b/src/IdentityServer4/Services/DefaultClaimsService.cs
@@ -242,7 +242,13 @@ protected virtual IEnumerable<Claim> GetOptionalClaims(ClaimsPrincipal subject)
         /// <returns></returns>
         protected virtual IEnumerable<Claim> FilterProtocolClaims(IEnumerable<Claim> claims)
         {
-            return claims.Where(x => !Constants.Filters.ClaimsProviderFilterClaimTypes.Contains(x.Type));
+            var claimsToFilter = claims.Where(x => Constants.Filters.ClaimsServiceFilterClaimTypes.Contains(x.Type));
+            if (claimsToFilter.Any())
+            {
+                var types = claimsToFilter.Select(x => x.Type);
+                _logger.LogInformation("Claim types from profile service that were filtered: {claimTypes}", types);
+            }
+            return claims.Except(claimsToFilter);
         }
     }
 }
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