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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 03:01:46 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 03:01:46 +0000
commitf8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch)
tree26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/VBox/Runtime/common/asn1/asn1-ut-bitstring-decode.cpp
parentInitial commit. (diff)
downloadvirtualbox-upstream.tar.xz
virtualbox-upstream.zip
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Runtime/common/asn1/asn1-ut-bitstring-decode.cpp')
-rw-r--r--src/VBox/Runtime/common/asn1/asn1-ut-bitstring-decode.cpp131
1 files changed, 131 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/asn1/asn1-ut-bitstring-decode.cpp b/src/VBox/Runtime/common/asn1/asn1-ut-bitstring-decode.cpp
new file mode 100644
index 00000000..4711779a
--- /dev/null
+++ b/src/VBox/Runtime/common/asn1/asn1-ut-bitstring-decode.cpp
@@ -0,0 +1,131 @@
+/* $Id: asn1-ut-bitstring-decode.cpp $ */
+/** @file
+ * IPRT - ASN.1, BIT STRING Type, Decoding.
+ */
+
+/*
+ * Copyright (C) 2006-2019 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) RTAsn1BitString_DecodeAsn1Ex(PRTASN1CURSOR pCursor, uint32_t fFlags, uint32_t cMaxBits, PRTASN1BITSTRING pThis,
+ const char *pszErrorTag)
+{
+ pThis->cBits = 0;
+ pThis->cMaxBits = cMaxBits;
+ pThis->uBits.pv = NULL;
+ pThis->pEncapsulated = NULL;
+ RTAsn1CursorInitAllocation(pCursor, &pThis->EncapsulatedAllocation);
+
+ int rc = RTAsn1CursorReadHdr(pCursor, &pThis->Asn1Core, pszErrorTag);
+ if (RT_SUCCESS(rc))
+ {
+ rc = RTAsn1CursorMatchTagClassFlagsString(pCursor, &pThis->Asn1Core, ASN1_TAG_BIT_STRING,
+ ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE,
+ fFlags, pszErrorTag, "BIT STRING");
+ if (RT_SUCCESS(rc))
+ {
+ if (!(pThis->Asn1Core.fClass & ASN1_TAGFLAG_CONSTRUCTED))
+ {
+ if ( ( cMaxBits == UINT32_MAX
+ || RT_ALIGN(cMaxBits, 8) / 8 + 1 >= pThis->Asn1Core.cb)
+ && pThis->Asn1Core.cb > 0)
+ {
+ uint8_t cUnusedBits = pThis->Asn1Core.cb > 0 ? *pThis->Asn1Core.uData.pu8 : 0;
+ if (pThis->Asn1Core.cb < 2)
+ {
+ /* Not bits present. */
+ if (cUnusedBits == 0)
+ {
+ pThis->cBits = 0;
+ pThis->uBits.pv = NULL;
+ RTAsn1CursorSkip(pCursor, pThis->Asn1Core.cb);
+ pThis->Asn1Core.pOps = &g_RTAsn1BitString_Vtable;
+ pThis->Asn1Core.fFlags |= RTASN1CORE_F_PRIMITE_TAG_STRUCT;
+ return VINF_SUCCESS;
+ }
+ rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_INVALID_BITSTRING_ENCODING,
+ "%s: Bad unused bit count: %#x (cb=%#x)",
+ pszErrorTag, cUnusedBits, pThis->Asn1Core.cb);
+ }
+ else if (cUnusedBits < 8)
+ {
+ pThis->cBits = (pThis->Asn1Core.cb - 1) * 8;
+ pThis->cBits -= cUnusedBits;
+ pThis->uBits.pu8 = pThis->Asn1Core.uData.pu8 + 1;
+ if ( !(pCursor->fFlags & (RTASN1CURSOR_FLAGS_DER | RTASN1CURSOR_FLAGS_CER))
+ || cUnusedBits == 0
+ || !( pThis->uBits.pu8[pThis->Asn1Core.cb - 2] & (((uint8_t)1 << cUnusedBits) - (uint8_t)1) ) )
+ {
+ RTAsn1CursorSkip(pCursor, pThis->Asn1Core.cb);
+ pThis->Asn1Core.pOps = &g_RTAsn1BitString_Vtable;
+ pThis->Asn1Core.fFlags |= RTASN1CORE_F_PRIMITE_TAG_STRUCT;
+ return VINF_SUCCESS;
+ }
+ rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_INVALID_BITSTRING_ENCODING,
+ "%s: Unused bits shall be zero in DER/CER mode: last byte=%#x cUnused=%#x",
+ pszErrorTag, pThis->uBits.pu8[pThis->cBits / 8], cUnusedBits);
+ }
+ else
+ rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_INVALID_BITSTRING_ENCODING,
+ "%s: Bad unused bit count: %#x (cb=%#x)",
+ pszErrorTag, cUnusedBits, pThis->Asn1Core.cb);
+ }
+ else
+ rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_INVALID_BITSTRING_ENCODING,
+ "%s: Size mismatch: cb=%#x, expected %#x (cMaxBits=%#x)",
+ pszErrorTag, pThis->Asn1Core.cb, RT_ALIGN(cMaxBits, 8) / 8 + 1, cMaxBits);
+ }
+ else
+ rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_CONSTRUCTED_STRING_NOT_IMPL,
+ "%s: Constructed BIT STRING not implemented.", pszErrorTag);
+ }
+ }
+ RT_ZERO(*pThis);
+ return rc;
+}
+
+
+RTDECL(int) RTAsn1BitString_DecodeAsn1(PRTASN1CURSOR pCursor, uint32_t fFlags, PRTASN1BITSTRING pThis, const char *pszErrorTag)
+{
+ return RTAsn1BitString_DecodeAsn1Ex(pCursor, fFlags, UINT32_MAX, pThis, pszErrorTag);
+}
+
+
+/*
+ * Generate code for the associated collection types.
+ */
+#define RTASN1TMPL_TEMPLATE_FILE "../common/asn1/asn1-ut-bitstring-template.h"
+#include <iprt/asn1-generator-internal-header.h>
+#include <iprt/asn1-generator-asn1-decoder.h>
+