Hotfix/1545 empty user graphs

coscine/issues#1545

src/STS/Controllers/ShibbolethController.cs

@@ -89,10 +89,10 @@ namespace Coscine.Api.STS.Controllers
                 _rdfStoreConnector.RemoveMembershipData(userGraphName, organization);
 
                 // Reverse lookup...
-                var eduPersonScopedAffiliation = info.Principal.FindFirstValue(ShibbolethAttributeMapping.LabelMapping.FirstOrDefault(x => x.Value == "Entitlement").Key);
-                if (eduPersonScopedAffiliation.StartsWith("employee@")
+                var eduPersonScopedAffiliation = info.Principal.FindAll(ShibbolethAttributeMapping.LabelMapping.FirstOrDefault(x => x.Value == "Entitlement").Key);
+                if (eduPersonScopedAffiliation.Any(x => x.Value.StartsWith("employee@"))
                     // Check for test shib (employee user is actually member...).
-                    || (eduPersonScopedAffiliation.StartsWith("member@") && entityId == "https://login-test.rz.rwth-aachen.de/shibboleth"))
+                    || (eduPersonScopedAffiliation.Any(x => x.Value.StartsWith("member@") && entityId == "https://login-test.rz.rwth-aachen.de/shibboleth")))
                 {
                     // Add membership information.
                     _rdfStoreConnector.AddMemebershipData(userGraphName, organization);