1 files changed, 96 insertions, 0 deletions
diff --git a/src/VBox/Additions/WINNT/VBoxTray/VBoxMMR.cpp b/src/VBox/Additions/WINNT/VBoxTray/VBoxMMR.cpp
new file mode 100644
index 00000000..4708c0bc
--- /dev/null
+++ b/src/VBox/Additions/WINNT/VBoxTray/VBoxMMR.cpp
@@ -0,0 +1,96 @@
+/* $Id: VBoxMMR.cpp $ */
+/** @file
+ * VBoxMMR - Multimedia Redirection
+ */
+
+/*
+ * Copyright (C) 2012 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+#include "VBoxTray.h"
+#include "VBoxMMR.h"
+#include <iprt/ldr.h>
+
+struct VBOXMMRCONTEXT
+{
+    RTLDRMOD  hModHook;
+    HHOOK     hHook;
+};
+
+static VBOXMMRCONTEXT gCtx = {0};
+
+static const char *g_pszMMRDLL  = "VBoxMMRHook";
+static const char *g_pszMMRPROC = "CBTProc";
+
+void VBoxMMRCleanup(VBOXMMRCONTEXT *pCtx)
+{
+    if (pCtx->hHook)
+    {
+        UnhookWindowsHookEx(pCtx->hHook);
+        pCtx->hHook = NULL;
+    }
+
+    if (pCtx->hModHook != NIL_RTLDRMOD)
+    {
+        RTLdrClose(pCtx->hModHook);
+        pCtx->hModHook = NIL_RTLDRMOD;
+    }
+}
+
+int VBoxMMRInit(const VBOXSERVICEENV *pEnv, void **ppInstance, bool *pfStartThread)
+{
+    LogRel2(("VBoxMMR: Initializing\n"));
+
+    int rc = RTLdrLoadAppPriv(g_pszMMRDLL, &gCtx.hModHook);
+    if (RT_SUCCESS(rc))
+    {
+        HOOKPROC pHook = (HOOKPROC)RTLdrGetFunction(gCtx.hModHook, g_pszMMRPROC);
+        if (pHook)
+        {
+            HMODULE hMod = (HMODULE)RTLdrGetNativeHandle(gCtx.hModHook);
+            Assert(hMod != (HMODULE)~(uintptr_t)0);
+            gCtx.hHook = SetWindowsHookEx(WH_CBT, pHook, hMod, 0);
+            if (gCtx.hHook)
+            {
+                *ppInstance = &gCtx;
+                return VINF_SUCCESS;
+            }
+
+            rc = RTErrConvertFromWin32(GetLastError());
+            LogRel2(("VBoxMMR: Error installing hooking proc: %Rrc\n", rc));
+        }
+        else
+        {
+            LogRel2(("VBoxMMR: Hooking proc not found\n"));
+            rc = VERR_NOT_FOUND;
+        }
+
+        RTLdrClose(gCtx.hModHook);
+        gCtx.hModHook = NIL_RTLDRMOD;
+    }
+    else
+        LogRel2(("VBoxMMR: Hooking library not found (%Rrc)\n", rc));
+
+    return rc;
+}
+
+void VBoxMMRDestroy(const VBOXSERVICEENV *pEnv, void *pInstance)
+{
+    VBOXMMRCONTEXT *pCtx = (VBOXMMRCONTEXT *) pInstance;
+
+    VBoxMMRCleanup(pCtx);
+}
+
+unsigned __stdcall VBoxMMRThread(void *pInstance)
+{
+    return 0;
+}
+