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/* $Id$ */
/** @file
* IPRT - Crypto - PKCS\#7/CMS, File related APIs.
*/
/*
* Copyright (C) 2006-2022 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/pkcs7.h>
#include <iprt/assert.h>
#include <iprt/err.h>
#include <iprt/crypto/pem.h>
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
static RTCRPEMMARKERWORD const g_aWords_Cms[] = { { RT_STR_TUPLE("CMS") } };
static RTCRPEMMARKERWORD const g_aWords_Pkcs7[] = { { RT_STR_TUPLE("PKCS7") } };
/** X509 Certificate markers. */
RT_DECL_DATA_CONST(RTCRPEMMARKER const) g_aRTCrPkcs7Markers[] =
{
{ g_aWords_Cms, RT_ELEMENTS(g_aWords_Cms) },
{ g_aWords_Pkcs7, RT_ELEMENTS(g_aWords_Pkcs7) }
};
/** Number of entries in g_aRTCrPkcs7Markers. */
RT_DECL_DATA_CONST(uint32_t const) g_cRTCrPkcs7Markers = RT_ELEMENTS(g_aRTCrPkcs7Markers);
/** @name Flags for RTCrPkcs7ContentInfo_ReadFromBuffer
* @{ */
/** Only allow PEM certificates, not binary ones.
* @sa RTCRPEMREADFILE_F_ONLY_PEM */
#define RTCRPKCS7_READ_F_PEM_ONLY RT_BIT(1)
/** @} */
RTDECL(int) RTCrPkcs7_ReadFromBuffer(PRTCRPKCS7CONTENTINFO pContentInfo, const void *pvBuf, size_t cbBuf,
uint32_t fFlags, PCRTASN1ALLOCATORVTABLE pAllocator,
bool *pfCmsLabeled, PRTERRINFO pErrInfo, const char *pszErrorTag)
{
if (pfCmsLabeled)
*pfCmsLabeled = false;
AssertReturn(!(fFlags & ~RTCRX509CERT_READ_F_PEM_ONLY), VERR_INVALID_FLAGS);
PCRTCRPEMSECTION pSectionHead;
int rc = RTCrPemParseContent(pvBuf, cbBuf,
fFlags & RTCRX509CERT_READ_F_PEM_ONLY ? RTCRPEMREADFILE_F_ONLY_PEM : 0,
g_aRTCrPkcs7Markers, g_cRTCrPkcs7Markers,
&pSectionHead, pErrInfo);
if (RT_SUCCESS(rc))
{
if (pSectionHead)
{
if (pfCmsLabeled)
*pfCmsLabeled = pSectionHead->pMarker == &g_aRTCrPkcs7Markers[0];
RTASN1CURSORPRIMARY PrimaryCursor;
RTAsn1CursorInitPrimary(&PrimaryCursor, pSectionHead->pbData, (uint32_t)RT_MIN(pSectionHead->cbData, UINT32_MAX),
pErrInfo, pAllocator, RTASN1CURSOR_FLAGS_DER, pszErrorTag);
RTCRPKCS7CONTENTINFO TmpContentInfo;
rc = RTCrPkcs7ContentInfo_DecodeAsn1(&PrimaryCursor.Cursor, 0, &TmpContentInfo, "CI");
if (RT_SUCCESS(rc))
{
rc = RTCrPkcs7ContentInfo_CheckSanity(&TmpContentInfo, 0, pErrInfo, "CI");
if (RT_SUCCESS(rc))
{
rc = RTCrPkcs7ContentInfo_Clone(pContentInfo, &TmpContentInfo, pAllocator);
if (RT_SUCCESS(rc))
{
if (pSectionHead->pNext || PrimaryCursor.Cursor.cbLeft)
rc = VINF_ASN1_MORE_DATA;
}
}
RTCrPkcs7ContentInfo_Delete(&TmpContentInfo);
}
RTCrPemFreeSections(pSectionHead);
}
else
rc = rc != VINF_SUCCESS ? -rc : VERR_INTERNAL_ERROR_2;
}
return rc;
}
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