Mojo C++ bindings: associated interface pointers/requests validation

mojo/public/cpp/bindings/lib/validation_util.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/public/cpp/bindings/lib/validation_util.h"
 
 #include <limits>
 
 #include "mojo/public/cpp/bindings/lib/bindings_serialization.h"
 #include "mojo/public/cpp/bindings/lib/message_internal.h"
@@ skipping 81 matching lines @@
 bool ValidateControlResponse(const Message* message) {
   if (!ValidateMessageIsResponse(message))
     return false;
   switch (message->header()->name) {
     case kRunMessageId:
       return ValidateMessagePayload<RunResponseMessageParams_Data>(message);
   }
   return false;
 }
 
+bool ValidateHandleNonNullable(const Handle& input, const char* error_message) {
+  if (input.value() != kEncodedInvalidHandleValue)
+    return true;
+
+  ReportValidationError(VALIDATION_ERROR_UNEXPECTED_INVALID_HANDLE,
+                        error_message);
+  return false;
+}
+
+bool ValidateInterfaceIdNonNullable(InterfaceId input,
+                                    const char* error_message) {
+  if (IsValidInterfaceId(input))
+    return true;
+
+  ReportValidationError(VALIDATION_ERROR_UNEXPECTED_INVALID_INTERFACE_ID,
+                        error_message);
+  return false;
+}
+
+bool ValidateHandle(const Handle& input, BoundsChecker* bounds_checker) {
+  if (bounds_checker->ClaimHandle(input))
+    return true;
+
+  ReportValidationError(VALIDATION_ERROR_ILLEGAL_HANDLE);
+  return false;
+}
+
+bool ValidateAssociatedInterfaceId(InterfaceId input) {
+  if (!IsMasterInterfaceId(input))
+    return true;
+
+  ReportValidationError(VALIDATION_ERROR_ILLEGAL_INTERFACE_ID);
+  return false;
+}
+
 }  // namespace internal
 }  // namespace mojo