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-rw-r--r--src/VBox/Runtime/common/crypto/x509-asn1-decoder.cpp230
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diff --git a/src/VBox/Runtime/common/crypto/x509-asn1-decoder.cpp b/src/VBox/Runtime/common/crypto/x509-asn1-decoder.cpp
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+++ b/src/VBox/Runtime/common/crypto/x509-asn1-decoder.cpp
@@ -0,0 +1,230 @@
+/* $Id: x509-asn1-decoder.cpp $ */
+/** @file
+ * IPRT - Crypto - X.509, Decoder for ASN.1.
+ */
+
+/*
+ * 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/crypto/x509.h>
+
+#include <iprt/errcore.h>
+#include <iprt/string.h>
+
+#include "x509-internal.h"
+
+
+/*
+ * One X.509 Extension.
+ */
+RTDECL(int) RTCrX509Extension_ExtnValue_DecodeAsn1(PRTASN1CURSOR pCursor, uint32_t fFlags,
+ PRTCRX509EXTENSION pThis, const char *pszErrorTag)
+{
+ RT_NOREF_PV(fFlags); RT_NOREF_PV(pszErrorTag);
+
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_UNKNOWN;
+
+ /*
+ * Decode the encapsulated extension bytes if know the format.
+ */
+ RTASN1CURSOR ValueCursor;
+ int rc = RTAsn1CursorInitSubFromCore(pCursor, &pThis->ExtnValue.Asn1Core, &ValueCursor, "ExtnValue");
+ if (RT_FAILURE(rc))
+ return rc;
+ pCursor = &ValueCursor;
+
+ if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_AUTHORITY_KEY_IDENTIFIER_OID) == 0)
+ {
+ /* 4.2.1.1 Authority Key Identifier */
+ PRTCRX509AUTHORITYKEYIDENTIFIER pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->SeqCore.Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_AUTHORITY_KEY_IDENTIFIER;
+ rc = RTCrX509AuthorityKeyIdentifier_DecodeAsn1(&ValueCursor, 0, pThat, "AuthorityKeyIdentifier");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_OLD_AUTHORITY_KEY_IDENTIFIER_OID) == 0)
+ {
+ /* Old and obsolete version of the above, still found in microsoft certificates. */
+ PRTCRX509OLDAUTHORITYKEYIDENTIFIER pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->SeqCore.Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_OLD_AUTHORITY_KEY_IDENTIFIER;
+ rc = RTCrX509OldAuthorityKeyIdentifier_DecodeAsn1(&ValueCursor, 0, pThat, "OldAuthorityKeyIdentifier");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_SUBJECT_KEY_IDENTIFIER_OID) == 0)
+ {
+ /* 4.2.1.2 Subject Key Identifier */
+ PRTASN1OCTETSTRING pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_OCTET_STRING;
+ rc = RTAsn1CursorGetOctetString(&ValueCursor, 0, pThat, "SubjectKeyIdentifier");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_KEY_USAGE_OID) == 0)
+ {
+ /* 4.2.1.3 Key Usage */
+ PRTASN1BITSTRING pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_BIT_STRING;
+ rc = RTAsn1CursorGetBitStringEx(&ValueCursor, 0, 9, pThat, "KeyUsage");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_CERTIFICATE_POLICIES_OID) == 0)
+ {
+ /* 4.2.1.4 Certificate Policies */
+ PRTCRX509CERTIFICATEPOLICIES pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->SeqCore.Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_CERTIFICATE_POLICIES;
+ rc = RTCrX509CertificatePolicies_DecodeAsn1(&ValueCursor, 0, pThat, "CertPolicies");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_POLICY_MAPPINGS_OID) == 0)
+ {
+ /* 4.2.1.5 Policy Mappings */
+ PRTCRX509POLICYMAPPINGS pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->SeqCore.Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_POLICY_MAPPINGS;
+ rc = RTCrX509PolicyMappings_DecodeAsn1(&ValueCursor, 0, pThat, "PolicyMapppings");
+ }
+ }
+ else if ( RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_SUBJECT_ALT_NAME_OID) == 0
+ || RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_ISSUER_ALT_NAME_OID) == 0)
+ {
+ /* 4.2.1.6 Subject Alternative Name / 4.2.1.7 Issuer Alternative Name */
+ PRTCRX509GENERALNAMES pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->SeqCore.Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_GENERAL_NAMES;
+ rc = RTCrX509GeneralNames_DecodeAsn1(&ValueCursor, 0, pThat, "AltName");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_BASIC_CONSTRAINTS_OID) == 0)
+ {
+ /* 4.2.1.9 Basic Constraints */
+ PRTCRX509BASICCONSTRAINTS pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->SeqCore.Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_BASIC_CONSTRAINTS;
+ rc = RTCrX509BasicConstraints_DecodeAsn1(&ValueCursor, 0, pThat, "BasicConstraints");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_NAME_CONSTRAINTS_OID) == 0)
+ {
+ /* 4.2.1.10 Name Constraints */
+ PRTCRX509NAMECONSTRAINTS pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->SeqCore.Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_NAME_CONSTRAINTS;
+ rc = RTCrX509NameConstraints_DecodeAsn1(&ValueCursor, 0, pThat, "NameConstraints");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_POLICY_CONSTRAINTS_OID) == 0)
+ {
+ /* 4.2.1.11 Policy Constraints */
+ PRTCRX509POLICYCONSTRAINTS pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->SeqCore.Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_POLICY_CONSTRAINTS;
+ rc = RTCrX509PolicyConstraints_DecodeAsn1(&ValueCursor, 0, pThat, "PolicyConstraints");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_EXT_KEY_USAGE_OID) == 0)
+ {
+ /* 4.2.1.12 Extended Key Usage */
+ PRTASN1SEQOFOBJIDS pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->SeqCore.Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_SEQ_OF_OBJ_IDS;
+ rc = RTAsn1SeqOfObjIds_DecodeAsn1(&ValueCursor, 0, pThat, "ExKeyUsage");
+ }
+ }
+ else if (RTAsn1ObjId_CompareWithString(&pThis->ExtnId, RTCRX509_ID_CE_EXT_KEY_USAGE_OID) == 0)
+ {
+ /* 4.2.1.14 Inhibit anyPolicy */
+ PRTASN1INTEGER pThat;
+ rc = RTAsn1MemAllocZ(&pThis->ExtnValue.EncapsulatedAllocation, (void **)&pThat, sizeof(*pThat));
+ if (RT_SUCCESS(rc))
+ {
+ pThis->ExtnValue.pEncapsulated = &pThat->Asn1Core;
+ pThis->enmValue = RTCRX509EXTENSIONVALUE_INTEGER;
+ rc = RTAsn1CursorGetInteger(&ValueCursor, 0, pThat, "InhibitAnyPolicy");
+ }
+ }
+ else
+ return VINF_SUCCESS;
+
+ if (RT_SUCCESS(rc))
+ rc = RTAsn1CursorCheckEnd(&ValueCursor);
+
+ if (RT_SUCCESS(rc))
+ return VINF_SUCCESS;
+ return rc;
+}
+
+
+/*
+ * Generate the code.
+ */
+#include <iprt/asn1-generator-asn1-decoder.h>
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-14 23:43:19 +0000