1 files changed, 53 insertions, 0 deletions
diff --git a/ipc/mscom/Objref.h b/ipc/mscom/Objref.h
new file mode 100644
index 0000000000..1b19b68644
--- /dev/null
+++ b/ipc/mscom/Objref.h
@@ -0,0 +1,53 @@
+/* -*- 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_Objref_h
+#define mozilla_mscom_Objref_h
+
+#include "mozilla/NotNull.h"
+#include "mozilla/RefPtr.h"
+
+#include <guiddef.h>
+
+struct IStream;
+
+namespace mozilla {
+namespace mscom {
+
+/**
+ * Given a buffer containing a serialized proxy to an interface with a handler,
+ * this function strips out the handler and converts it to a standard one.
+ * @param aStream IStream containing a serialized proxy.
+ *                There should be nothing else written to the stream past the
+ *                current OBJREF.
+ * @param aStart  Absolute position of the beginning of the OBJREF.
+ * @param aEnd    Absolute position of the end of the OBJREF.
+ * @return true if the handler was successfully stripped, otherwise false.
+ */
+bool StripHandlerFromOBJREF(NotNull<IStream*> aStream, const uint64_t aStart,
+                            const uint64_t aEnd);
+
+/**
+ * Given a buffer containing a serialized proxy to an interface, this function
+ * returns the length of the serialized data.
+ * @param aStream IStream containing a serialized proxy. The stream pointer
+ *                must be positioned at the beginning of the OBJREF.
+ * @return The size of the serialized proxy, or 0 on error.
+ */
+uint32_t GetOBJREFSize(NotNull<IStream*> aStream);
+
+/**
+ * Overrides the IID in a serialized proxy with the specified IID.
+ * @param aStream Pointer to a stream containing a serialized proxy.
+ * @param aStart Offset to the beginning of the serialized proxy within aStream.
+ * @param aNewIid The replacement IID to apply to the serialized proxy.
+ */
+bool SetIID(NotNull<IStream*> aStream, const uint64_t aStart, REFIID aNewIid);
+
+}  // namespace mscom
+}  // namespace mozilla
+
+#endif  // mozilla_mscom_Objref_h