1 files changed, 33 insertions, 0 deletions
diff --git a/browser/app/winlauncher/NtLoaderAPI.cpp b/browser/app/winlauncher/NtLoaderAPI.cpp
new file mode 100644
index 0000000000..97f8a20186
--- /dev/null
+++ b/browser/app/winlauncher/NtLoaderAPI.cpp
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/LoaderAPIInterfaces.h"
+
+#include "freestanding/CheckForCaller.h"
+#include "freestanding/LoaderPrivateAPI.h"
+
+namespace mozilla {
+
+extern "C" MOZ_EXPORT nt::LoaderAPI* GetNtLoaderAPI(
+    nt::LoaderObserver* aNewObserver) {
+  // Make sure the caller is inside mozglue.dll - we don't want to allow
+  // external access to this function, as it contains details about
+  // the SharedSection which is used to sandbox future child processes.
+  const bool isCallerMozglue =
+      CheckForAddress(RETURN_ADDRESS(), L"mozglue.dll");
+  MOZ_ASSERT(isCallerMozglue);
+  if (!isCallerMozglue) {
+    return nullptr;
+  }
+
+  freestanding::EnsureInitialized();
+  freestanding::LoaderPrivateAPI& api = freestanding::gLoaderPrivateAPI;
+  api.SetObserver(aNewObserver);
+
+  return &api;
+}
+
+}  // namespace mozilla