1 files changed, 20 insertions, 0 deletions
diff --git a/mozglue/misc/WindowsDllMain.cpp b/mozglue/misc/WindowsDllMain.cpp
new file mode 100644
index 0000000000..1baec678db
--- /dev/null
+++ b/mozglue/misc/WindowsDllMain.cpp
@@ -0,0 +1,20 @@
+/* -*- 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/. */
+
+#include <libloaderapi.h>
+
+BOOL WINAPI DllMain(HINSTANCE aInstDll, DWORD aReason, LPVOID) {
+  if (aReason == DLL_PROCESS_ATTACH) {
+    ::DisableThreadLibraryCalls(aInstDll);
+
+    // mozglue.dll imports RtlGenRandom from advapi32.dll as SystemFunction036,
+    // but the actual function is implemented in cryptbase.dll.  To avoid
+    // loading a fake cryptbase.dll from the installation directory, we preload
+    // cryptbase.dll from the system directory.
+    ::LoadLibraryExW(L"cryptbase.dll", nullptr, LOAD_LIBRARY_SEARCH_SYSTEM32);
+  }
+  return TRUE;
+}