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/* $Id: x509-sanity.cpp $ */
/** @file
* IPRT - Crypto - X.509, Sanity Checkers.
*/
/*
* 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/err.h>
#include <iprt/string.h>
#include "x509-internal.h"
static int rtCrX509Validity_CheckSanityExtra(PCRTCRX509VALIDITY pThis, uint32_t fFlags, PRTERRINFO pErrInfo, const char *pszErrorTag)
{
RT_NOREF_PV(fFlags);
if (RTAsn1Time_Compare(&pThis->NotBefore, &pThis->NotAfter) > 0)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_VALIDITY_SWAPPED, "%s: NotBefore is after NotAfter", pszErrorTag);
/** @todo check tag constraints? */
return VINF_SUCCESS;
}
static int rtCrX509Name_CheckSanityExtra(PCRTCRX509NAME pThis, uint32_t fFlags, PRTERRINFO pErrInfo, const char *pszErrorTag)
{
RT_NOREF_PV(fFlags);
if (pThis->cItems == 0)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_NAME_EMPTY_SET, "%s: Has no components.", pszErrorTag);
for (uint32_t i = 0; i < pThis->cItems; i++)
{
PCRTCRX509RELATIVEDISTINGUISHEDNAME const pRdn = pThis->papItems[i];
if (pRdn->cItems == 0)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_NAME_EMPTY_SUB_SET,
"%s: Items[%u] has no sub components.", pszErrorTag, i);
for (uint32_t j = 0; j < pRdn->cItems; j++)
{
PCRTCRX509ATTRIBUTETYPEANDVALUE const pAttr = pRdn->papItems[j];
if (pAttr->Value.enmType != RTASN1TYPE_STRING)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_NAME_NOT_STRING,
"%s: Items[%u].paItems[%u].enmType is %d instead of string (%d).",
pszErrorTag, i, j, pAttr->Value.enmType, RTASN1TYPE_STRING);
if (pAttr->Value.u.String.Asn1Core.cb == 0)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_NAME_EMPTY_STRING,
"%s: Items[%u].paItems[%u] is an empty string", pszErrorTag, i, j);
switch (pAttr->Value.u.String.Asn1Core.uTag)
{
case ASN1_TAG_PRINTABLE_STRING:
case ASN1_TAG_UTF8_STRING:
break;
case ASN1_TAG_T61_STRING:
case ASN1_TAG_UNIVERSAL_STRING:
case ASN1_TAG_BMP_STRING:
break;
case ASN1_TAG_IA5_STRING: /* Used by "Microsoft Root Certificate Authority" in the "com" part of the Issuer. */
break;
default:
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_INVALID_NAME_STRING_TAG,
"%s: Items[%u].paItems[%u] invalid string type: %u", pszErrorTag, i, j,
pAttr->Value.u.String.Asn1Core.uTag);
}
}
}
return VINF_SUCCESS;
}
static int rtCrX509SubjectPublicKeyInfo_CheckSanityExtra(PCRTCRX509SUBJECTPUBLICKEYINFO pThis, uint32_t fFlags,
PRTERRINFO pErrInfo, const char *pszErrorTag)
{
RT_NOREF_PV(fFlags);
if (pThis->SubjectPublicKey.cBits <= 32)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_PUBLIC_KEY_TOO_SMALL,
"%s: SubjectPublicKey is too small, only %u bits", pszErrorTag, pThis->SubjectPublicKey.cBits);
return VINF_SUCCESS;
}
static int rtCrX509TbsCertificate_CheckSanityExtra(PCRTCRX509TBSCERTIFICATE pThis, uint32_t fFlags,
PRTERRINFO pErrInfo, const char *pszErrorTag)
{
RT_NOREF_PV(fFlags);
if ( RTAsn1Integer_IsPresent(&pThis->T0.Version)
&& RTAsn1Integer_UnsignedCompareWithU32(&pThis->T0.Version, RTCRX509TBSCERTIFICATE_V1) != 0
&& RTAsn1Integer_UnsignedCompareWithU32(&pThis->T0.Version, RTCRX509TBSCERTIFICATE_V2) != 0
&& RTAsn1Integer_UnsignedCompareWithU32(&pThis->T0.Version, RTCRX509TBSCERTIFICATE_V3) != 0)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_TBSCERT_UNSUPPORTED_VERSION,
"%s: Unknown Version number: %llu",
pszErrorTag, pThis->T0.Version.uValue.u);
if ( pThis->SerialNumber.Asn1Core.cb < 1
|| pThis->SerialNumber.Asn1Core.cb > 1024)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_TBSCERT_SERIAL_NUMBER_OUT_OF_BOUNDS,
"%s: Bad SerialNumber length: %u", pszErrorTag, pThis->SerialNumber.Asn1Core.cb);
if ( ( RTAsn1BitString_IsPresent(&pThis->T1.IssuerUniqueId)
|| RTAsn1BitString_IsPresent(&pThis->T2.SubjectUniqueId))
&& RTAsn1Integer_UnsignedCompareWithU32(&pThis->T0.Version, RTCRX509TBSCERTIFICATE_V2) < 0)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_TBSCERT_UNIQUE_IDS_REQ_V2,
"%s: IssuerUniqueId and SubjectUniqueId requires version 2", pszErrorTag);
if ( RTCrX509Extensions_IsPresent(&pThis->T3.Extensions)
&& RTAsn1Integer_UnsignedCompareWithU32(&pThis->T0.Version, RTCRX509TBSCERTIFICATE_V3) < 0)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_TBSCERT_EXTS_REQ_V3, "%s: Extensions requires version 3", pszErrorTag);
return VINF_SUCCESS;
}
static int rtCrX509Certificate_CheckSanityExtra(PCRTCRX509CERTIFICATE pThis, uint32_t fFlags,
PRTERRINFO pErrInfo, const char *pszErrorTag)
{
RT_NOREF_PV(fFlags);
if (RTCrX509AlgorithmIdentifier_Compare(&pThis->SignatureAlgorithm, &pThis->TbsCertificate.Signature) != 0)
return RTErrInfoSetF(pErrInfo, VERR_CR_X509_CERT_TBS_SIGN_ALGO_MISMATCH,
"%s: SignatureAlgorithm (%s) does not match TbsCertificate.Signature (%s).", pszErrorTag,
pThis->SignatureAlgorithm.Algorithm.szObjId,
pThis->TbsCertificate.Signature.Algorithm.szObjId);
return VINF_SUCCESS;
}
/*
* Generate the code.
*/
#include <iprt/asn1-generator-sanity.h>
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