1 files changed, 63 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/asn1/asn1-ut-null-decode.cpp b/src/VBox/Runtime/common/asn1/asn1-ut-null-decode.cpp
new file mode 100644
index 00000000..47d4cc9e
--- /dev/null
+++ b/src/VBox/Runtime/common/asn1/asn1-ut-null-decode.cpp
@@ -0,0 +1,63 @@
+/* $Id: asn1-ut-null-decode.cpp $ */
+/** @file
+ * IPRT - ASN.1, NULL type, Decoding.
+ */
+
+/*
+ * Copyright (C) 2006-2020 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.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "internal/iprt.h"
+#include <iprt/asn1.h>
+
+#include <iprt/err.h>
+#include <iprt/string.h>
+
+#include <iprt/formats/asn1.h>
+
+
+RTDECL(int) RTAsn1Null_DecodeAsn1(PRTASN1CURSOR pCursor, uint32_t fFlags, PRTASN1NULL pThis, const char *pszErrorTag)
+{
+    int rc = RTAsn1CursorReadHdr(pCursor, &pThis->Asn1Core, pszErrorTag);
+    if (RT_SUCCESS(rc))
+    {
+        rc = RTAsn1CursorMatchTagClassFlags(pCursor, &pThis->Asn1Core, ASN1_TAG_NULL,
+                                            ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE, fFlags, pszErrorTag, "NULL");
+        if (RT_SUCCESS(rc))
+        {
+            if (pThis->Asn1Core.cb == 0)
+            {
+                pThis->Asn1Core.fFlags |= RTASN1CORE_F_PRIMITE_TAG_STRUCT;
+                pThis->Asn1Core.pOps    = &g_RTAsn1Null_Vtable;
+                return VINF_SUCCESS;
+            }
+
+            rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_INVALID_NULL_ENCODING,
+                                     "%s: Expected NULL object to have zero length: %#x", pszErrorTag, pThis->Asn1Core.cb);
+        }
+    }
+    RT_ZERO(*pThis);
+    return rc;
+}
+