Imported Upstream version 4.2.0.179

Former-commit-id: 0a113cb3a6feb7873f632839b1307cc6033cd595

external/referencesource/System.ServiceModel.Internals/System/Runtime/ActionItem.cs

@@ -11,9 +11,11 @@ namespace System.Runtime
 
     abstract class ActionItem
     {
+#if FEATURE_COMPRESSEDSTACK
         [Fx.Tag.SecurityNote(Critical = "Stores the security context, used later in binding back into")]
         [SecurityCritical]
         SecurityContext context;
+#endif
         bool isScheduled;
 
         bool lowPriority;
@@ -76,6 +78,7 @@ namespace System.Runtime
             }
 
             this.isScheduled = true;
+#if FEATURE_COMPRESSEDSTACK
             if (PartialTrustHelpers.ShouldFlowSecurityContext)
             {
                 this.context = PartialTrustHelpers.CaptureSecurityContextNoIdentityFlow();
@@ -85,10 +88,12 @@ namespace System.Runtime
                 ScheduleCallback(CallbackHelper.InvokeWithContextCallback);
             }
             else
+#endif
             {
                 ScheduleCallback(CallbackHelper.InvokeWithoutContextCallback);
             }
         }
+#if FEATURE_COMPRESSEDSTACK
         [Fx.Tag.SecurityNote(Critical = "Access critical field context and critical property " +
             "CallbackHelper.InvokeWithContextCallback, calls into critical method ScheduleCallback; " +
             "since nothing is known about the given context, can't be treated as safe")]
@@ -108,6 +113,8 @@ namespace System.Runtime
             this.context = context.CreateCopy();
             ScheduleCallback(CallbackHelper.InvokeWithContextCallback);
         }
+#endif
+
         [Fx.Tag.SecurityNote(Critical = "Access critical property CallbackHelper.InvokeWithoutContextCallback, " +
             "Calls into critical method ScheduleCallback; not bound to a security context")]
         [SecurityCritical]
@@ -137,7 +144,7 @@ namespace System.Runtime
                 IOThreadScheduler.ScheduleCallbackNoFlow(callback, state);
             }
         }
-
+#if FEATURE_COMPRESSEDSTACK
         [Fx.Tag.SecurityNote(Critical = "Extract the security context stored and reset the critical field")]
         [SecurityCritical]
         SecurityContext ExtractContext()
@@ -148,7 +155,7 @@ namespace System.Runtime
             this.context = null;
             return result;
         }
-
+#endif
         [Fx.Tag.SecurityNote(Critical = "Calls into critical static method ScheduleCallback")]
         [SecurityCritical]
         void ScheduleCallback(Action<object> callback)
@@ -159,12 +166,16 @@ namespace System.Runtime
         [SecurityCritical]
         static class CallbackHelper
         {
+#if FEATURE_COMPRESSEDSTACK
             [Fx.Tag.SecurityNote(Critical = "Stores a delegate to a critical method")]
             static Action<object> invokeWithContextCallback;
+#endif
             [Fx.Tag.SecurityNote(Critical = "Stores a delegate to a critical method")]
             static Action<object> invokeWithoutContextCallback;
             [Fx.Tag.SecurityNote(Critical = "Stores a delegate to a critical method")]
             static ContextCallback onContextAppliedCallback;
+
+#if FEATURE_COMPRESSEDSTACK
             [Fx.Tag.SecurityNote(Critical = "Provides access to a critical field; Initialize it with " +
                 "a delegate to a critical method")]
             public static Action<object> InvokeWithContextCallback
@@ -178,7 +189,7 @@ namespace System.Runtime
                     return invokeWithContextCallback;
                 }
             }
-
+#endif
             [Fx.Tag.SecurityNote(Critical = "Provides access to a critical field; Initialize it with " +
                 "a delegate to a critical method")]
             public static Action<object> InvokeWithoutContextCallback
@@ -205,13 +216,14 @@ namespace System.Runtime
                     return onContextAppliedCallback;
                 }
             }
+#if FEATURE_COMPRESSEDSTACK
             [Fx.Tag.SecurityNote(Critical = "Called by the scheduler without any user context on the stack")]
             static void InvokeWithContext(object state)
             {
                 SecurityContext context = ((ActionItem)state).ExtractContext();
                 SecurityContext.Run(context, OnContextAppliedCallback, state);
             }
-
+#endif
             [Fx.Tag.SecurityNote(Critical = "Called by the scheduler without any user context on the stack")]
             static void InvokeWithoutContext(object state)
             {

external/referencesource/System.ServiceModel.Internals/System/Runtime/PartialTrustHelpers.cs

@@ -36,6 +36,9 @@ namespace System.Runtime
         [SecurityCritical]
         internal static bool IsInFullTrust()
         {
+#if DISABLE_CAS_USE
+            return true;
+#else
             if (!SecurityManager.CurrentThreadRequiresSecurityContextCapture())
             {
                 return true;
@@ -50,8 +53,9 @@ namespace System.Runtime
             {
                 return false;
             }
+#endif
         }
-
+#if FEATURE_COMPRESSEDSTACK
         [Fx.Tag.SecurityNote(Critical = "Captures security context with identity flow suppressed, " +
             "this requires satisfying a LinkDemand for infrastructure.")]
         [SecurityCritical]
@@ -70,7 +74,7 @@ namespace System.Runtime
                 }
             }
         }
-                
+#endif
         [Fx.Tag.SecurityNote(Critical = "used in a security-sensitive decision")]
         [SecurityCritical]
         internal static bool IsTypeAptca(Type type)
@@ -110,17 +114,25 @@ namespace System.Runtime
         [SecurityCritical]
         internal static bool CheckAppDomainPermissions(PermissionSet permissions)
         {
+#if DISABLE_CAS_USE
+            return true;
+#else
             return AppDomain.CurrentDomain.IsHomogenous &&
                    permissions.IsSubsetOf(AppDomain.CurrentDomain.PermissionSet);
+#endif
         }
 
         [Fx.Tag.SecurityNote(Critical = "used in a security-sensitive decision")]
         [SecurityCritical]
         internal static bool HasEtwPermissions()
         {
+#if DISABLE_CAS_USE
+            return true;
+#else
             //Currently unrestricted permissions are required to create Etw provider. 
             PermissionSet permissions = new PermissionSet(PermissionState.Unrestricted);
             return CheckAppDomainPermissions(permissions);
+#endif
         }
 
         internal static bool AppDomainFullyTrusted
@@ -130,6 +142,9 @@ namespace System.Runtime
             [SecuritySafeCritical]
             get
             {
+#if DISABLE_CAS_USE
+                return true;
+#else
                 if (!checkedForFullTrust)
                 {
                     inFullTrust = AppDomain.CurrentDomain.IsFullyTrusted;
@@ -137,6 +152,7 @@ namespace System.Runtime
                 }
 
                 return inFullTrust;
+#endif
             }
         }
     }