1 files changed, 73 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..5c43df1b
--- /dev/null
+++ b/src/VBox/Runtime/common/asn1/asn1-ut-null-decode.cpp
@@ -0,0 +1,73 @@
+/* $Id: asn1-ut-null-decode.cpp $ */
+/** @file
+ * IPRT - ASN.1, NULL type, Decoding.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox 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.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   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;
+}
+