Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.IdentityModel/System/IdentityModel/Tokens/SctAuthorizationPolicy.cs

@@ -0,0 +1,58 @@
+//------------------------------------------------------------------------------
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+namespace System.IdentityModel.Tokens
+{
+    using System.IdentityModel.Claims;
+    using System.IdentityModel.Policy;
+    using SysClaim = System.IdentityModel.Claims.Claim;
+
+    /// <summary>
+    /// This class serves as a dummy AuthorizationPolicy on an issued token so that when
+    /// WCF renews a token it can match the identity of the issuer with the renewer. This is 
+    /// required as in the IDFX layer we throw the WCF generated AuthorizationPolicy ( UnconditionalPolicy )
+    /// </summary>
+    internal class SctAuthorizationPolicy : IAuthorizationPolicy
+    {
+        ClaimSet _issuer;
+        string _id = UniqueId.CreateUniqueId();
+
+        internal SctAuthorizationPolicy( SysClaim claim )
+        {
+            _issuer = new DefaultClaimSet( claim );
+        }
+
+        #region IAuthorizationPolicy Members
+
+        bool IAuthorizationPolicy.Evaluate( EvaluationContext evaluationContext, ref object state )
+        {
+            if ( evaluationContext == null )
+            {
+                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull( "evaluationContext" );
+            }
+            evaluationContext.AddClaimSet( this, _issuer );
+            return true;
+        }
+
+        ClaimSet IAuthorizationPolicy.Issuer
+        {
+            get
+            {
+                return _issuer;
+            }
+        }
+
+        #endregion
+
+        #region IAuthorizationComponent Members
+
+        string IAuthorizationComponent.Id
+        {
+            get
+            {
+                return _id;
+            }
+        }
+        #endregion
+    }
+}