1 files changed, 44 insertions, 0 deletions
diff --git a/ipc/mscom/COMWrappers.h b/ipc/mscom/COMWrappers.h
new file mode 100644
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+++ b/ipc/mscom/COMWrappers.h
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+/* -*- 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 http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_mscom_COMWrappers_h
+#define mozilla_mscom_COMWrappers_h
+
+#include <objbase.h>
+
+#if (NTDDI_VERSION < NTDDI_WIN8)
+// Win8+ API that we use very carefully
+DECLARE_HANDLE(CO_MTA_USAGE_COOKIE);
+HRESULT WINAPI CoIncrementMTAUsage(CO_MTA_USAGE_COOKIE* pCookie);
+#endif  // (NTDDI_VERSION < NTDDI_WIN8)
+
+// A set of wrapped COM functions, so that we can dynamically link to the
+// functions in combase.dll on win8+. This prevents ole32.dll and many other
+// DLLs loading, which are not required when we have win32k locked down.
+namespace mozilla::mscom::wrapped {
+
+HRESULT CoInitializeEx(LPVOID pvReserved, DWORD dwCoInit);
+
+void CoUninitialize();
+
+HRESULT CoIncrementMTAUsage(CO_MTA_USAGE_COOKIE* pCookie);
+
+HRESULT CoGetApartmentType(APTTYPE* pAptType, APTTYPEQUALIFIER* pAptQualifier);
+
+HRESULT CoInitializeSecurity(PSECURITY_DESCRIPTOR pSecDesc, LONG cAuthSvc,
+                             SOLE_AUTHENTICATION_SERVICE* asAuthSvc,
+                             void* pReserved1, DWORD dwAuthnLevel,
+                             DWORD dwImpLevel, void* pAuthList,
+                             DWORD dwCapabilities, void* pReserved3);
+
+HRESULT CoCreateInstance(REFCLSID rclsid, LPUNKNOWN pUnkOuter,
+                         DWORD dwClsContext, REFIID riid, LPVOID* ppv);
+
+HRESULT CoCreateGuid(GUID* pguid);
+
+}  // namespace mozilla::mscom::wrapped
+
+#endif  // mozilla_mscom_COMWrappers_h