Update mojo sdk to rev e7270700d671fa8e458b4d8c9e47f7bcfb65da0b

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

Index: third_party/mojo/src/mojo/public/cpp/bindings/lib/validation_util.cc
diff --git a/third_party/mojo/src/mojo/public/cpp/bindings/lib/validation_util.cc b/third_party/mojo/src/mojo/public/cpp/bindings/lib/validation_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..5614cca4a25c9227a3d85e966c9d722bbf6e974d
--- /dev/null
+++ b/third_party/mojo/src/mojo/public/cpp/bindings/lib/validation_util.cc
@@ -0,0 +1,74 @@
+// 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 "mojo/public/cpp/bindings/lib/bindings_serialization.h"
+#include "mojo/public/cpp/bindings/lib/message_internal.h"
+#include "mojo/public/cpp/bindings/lib/validation_errors.h"
+
+namespace mojo {
+namespace internal {
+
+bool ValidateEncodedPointer(const uint64_t* offset) {
+  // Cast to uintptr_t so overflow behavior is well defined.
+  return reinterpret_cast<uintptr_t>(offset) + *offset >=
+         reinterpret_cast<uintptr_t>(offset);
+}
+
+bool ValidateStructHeaderAndClaimMemory(const void* data,
+                                        BoundsChecker* bounds_checker) {
+  if (!IsAligned(data)) {
+    ReportValidationError(VALIDATION_ERROR_MISALIGNED_OBJECT);
+    return false;
+  }
+  if (!bounds_checker->IsValidRange(data, sizeof(StructHeader))) {
+    ReportValidationError(VALIDATION_ERROR_ILLEGAL_MEMORY_RANGE);
+    return false;
+  }
+
+  const StructHeader* header = static_cast<const StructHeader*>(data);
+
+  if (header->num_bytes < sizeof(StructHeader)) {
+    ReportValidationError(VALIDATION_ERROR_UNEXPECTED_STRUCT_HEADER);
+    return false;
+  }
+
+  if (!bounds_checker->ClaimMemory(data, header->num_bytes)) {
+    ReportValidationError(VALIDATION_ERROR_ILLEGAL_MEMORY_RANGE);
+    return false;
+  }
+
+  return true;
+}
+
+bool ValidateMessageIsRequestWithoutResponse(const Message* message) {
+  if (message->has_flag(kMessageIsResponse) ||
+      message->has_flag(kMessageExpectsResponse)) {
+    ReportValidationError(VALIDATION_ERROR_MESSAGE_HEADER_INVALID_FLAGS);
+    return false;
+  }
+  return true;
+}
+
+bool ValidateMessageIsRequestExpectingResponse(const Message* message) {
+  if (message->has_flag(kMessageIsResponse) ||
+      !message->has_flag(kMessageExpectsResponse)) {
+    ReportValidationError(VALIDATION_ERROR_MESSAGE_HEADER_INVALID_FLAGS);
+    return false;
+  }
+  return true;
+}
+
+bool ValidateMessageIsResponse(const Message* message) {
+  if (message->has_flag(kMessageExpectsResponse) ||
+      !message->has_flag(kMessageIsResponse)) {
+    ReportValidationError(VALIDATION_ERROR_MESSAGE_HEADER_INVALID_FLAGS);
+    return false;
+  }
+  return true;
+}
+
+}  // namespace internal
+}  // namespace mojo