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/* $Id: RTCrStoreCreateSnapshotById-darwin.cpp $ */
/** @file
* IPRT - RTCrStoreCreateSnapshotById, Darwin.
*/
/*
* 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 <iprt/crypto/store.h>
#include "internal/iprt.h"
#include <iprt/assert.h>
#include <iprt/err.h>
#include <iprt/file.h>
/* HACK ALERT! Shut up those deprecated messages on SecKeychainSearchCreateFromAttributes and SecKeychainSearchCopyNext. */
#include <CoreFoundation/CoreFoundation.h>
#undef DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER
#define DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER
#include <Security/Security.h>
/**
* Checks the trust settings of the certificate.
*
* @returns true if not out-right distructed, otherwise false.
* @param hCert The certificate.
* @param enmTrustDomain The trust settings domain to check relative to.
*/
static bool rtCrStoreIsDarwinCertTrustworthy(SecCertificateRef hCert, SecTrustSettingsDomain enmTrustDomain)
{
bool fResult = true;
CFArrayRef hTrustSettings;
OSStatus orc = SecTrustSettingsCopyTrustSettings(hCert, enmTrustDomain, &hTrustSettings);
if (orc == noErr)
{
CFIndex const cTrustSettings = CFArrayGetCount(hTrustSettings);
for (CFIndex i = 0; i < cTrustSettings; i++)
{
CFDictionaryRef hDict = (CFDictionaryRef)CFArrayGetValueAtIndex(hTrustSettings, i);
AssertContinue(CFGetTypeID(hDict) == CFDictionaryGetTypeID());
CFNumberRef hNum = (CFNumberRef)CFDictionaryGetValue(hDict, kSecTrustSettingsResult);
if (hNum)
{
AssertContinue(CFGetTypeID(hNum) == CFNumberGetTypeID());
SInt32 iNum;
if (CFNumberGetValue(hNum, kCFNumberSInt32Type, &iNum))
{
if (iNum == kSecTrustSettingsResultDeny)
{
fResult = false;
break;
}
}
/* No need to release hNum (get rule). */
}
/* No need to release hDict (get rule). */
}
CFRelease(hTrustSettings);
}
else if (orc != errSecItemNotFound)
{
AssertFailed();
fResult = false;
}
return fResult;
}
static int rtCrStoreAddCertsFromNativeKeychain(RTCRSTORE hStore, SecKeychainRef hKeychain, SecTrustSettingsDomain enmTrustDomain,
int rc, PRTERRINFO pErrInfo)
{
/** @todo The SecKeychainSearchCreateFromAttributes and
* SecKeychainSearchCopyNext APIs have been officially deprecated since 10.7
* according to the header files. However, the perferred API,
* SecItemCopyMatching (and possibly SecTrustCopyAnchorCertificates) would
* require a larger rewrite here and that's just not worth it right now. We can
* do that should these APIs be removed (unlikely given the amount of grep hits
* in the public 10.15.3 sources). */
/*
* Enumerate the certificates in the keychain.
*/
RT_GCC_NO_WARN_DEPRECATED_BEGIN
SecKeychainSearchRef hSearch;
OSStatus orc = SecKeychainSearchCreateFromAttributes(hKeychain, kSecCertificateItemClass, NULL, &hSearch);
if (orc == noErr)
{
SecKeychainItemRef hItem;
while ((orc = SecKeychainSearchCopyNext(hSearch, &hItem)) == noErr)
{
Assert(CFGetTypeID(hItem) == SecCertificateGetTypeID());
SecCertificateRef hCert = (SecCertificateRef)hItem;
/*
* Check if the current certificate is at all trusted, skip it if it's isn't.
*/
if (rtCrStoreIsDarwinCertTrustworthy(hCert, enmTrustDomain))
{
/*
* Get the certificate data.
*/
CFDataRef hEncodedCert = SecCertificateCopyData(hCert);
Assert(hEncodedCert);
if (hEncodedCert)
{
CFIndex cbEncoded = CFDataGetLength(hEncodedCert);
const uint8_t *pbEncoded = CFDataGetBytePtr(hEncodedCert);
RTERRINFOSTATIC StaticErrInfo;
int rc2 = RTCrStoreCertAddEncoded(hStore, RTCRCERTCTX_F_ENC_X509_DER | RTCRCERTCTX_F_ADD_IF_NOT_FOUND,
pbEncoded, cbEncoded, RTErrInfoInitStatic(&StaticErrInfo));
if (RT_FAILURE(rc2))
{
if (RTErrInfoIsSet(&StaticErrInfo.Core))
RTErrInfoAddF(pErrInfo, -rc2, " %s", StaticErrInfo.Core.pszMsg);
else
RTErrInfoAddF(pErrInfo, -rc2, " %Rrc adding cert", rc2);
rc = -rc2;
}
CFRelease(hEncodedCert);
}
}
CFRelease(hItem);
}
if (orc != errSecItemNotFound)
rc = RTErrInfoAddF(pErrInfo, -VERR_SEARCH_ERROR,
" SecKeychainSearchCopyNext failed with %#x", orc);
CFRelease(hSearch);
}
else
rc = RTErrInfoAddF(pErrInfo, -VERR_SEARCH_ERROR,
" SecKeychainSearchCreateFromAttributes failed with %#x", orc);
RT_GCC_NO_WARN_DEPRECATED_END
return rc;
}
static int rtCrStoreAddCertsFromNativeKeychainFile(RTCRSTORE hStore, const char *pszKeychain,
SecTrustSettingsDomain enmTrustDomain,
int rc, PRTERRINFO pErrInfo)
{
/*
* Open the keychain and call common worker to do the job.
*/
SecKeychainRef hKeychain;
OSStatus orc = SecKeychainOpen(pszKeychain, &hKeychain);
if (orc == noErr)
{
rc = rtCrStoreAddCertsFromNativeKeychain(hStore, hKeychain, enmTrustDomain, rc, pErrInfo);
CFRelease(hKeychain);
}
else if (RTFileExists(pszKeychain))
rc = RTErrInfoAddF(pErrInfo, -VERR_OPEN_FAILED, " SecKeychainOpen failed with %#x on '%s'", orc, pszKeychain);
return rc;
}
static int rtCrStoreAddCertsFromNativeKeystoreDomain(RTCRSTORE hStore, SecPreferencesDomain enmDomain,
SecTrustSettingsDomain enmTrustDomain,
int rc, PRTERRINFO pErrInfo)
{
/*
* Get a list of keystores for this domain and call common worker on each.
*/
CFArrayRef hKeychains;
OSStatus orc = SecKeychainCopyDomainSearchList(enmDomain, &hKeychains);
if (orc == noErr)
{
CFIndex const cEntries = CFArrayGetCount(hKeychains);
for (CFIndex i = 0; i < cEntries; i++)
{
SecKeychainRef hKeychain = (SecKeychainRef)CFArrayGetValueAtIndex(hKeychains, i);
Assert(CFGetTypeID(hKeychain) == SecKeychainGetTypeID());
CFRetain(hKeychain);
rc = rtCrStoreAddCertsFromNativeKeychain(hStore, hKeychain, enmTrustDomain, rc, pErrInfo);
CFRelease(hKeychain);
}
CFRelease(hKeychains);
}
else
rc = RTErrInfoAddF(pErrInfo, -VERR_SEARCH_ERROR,
" SecKeychainCopyDomainSearchList failed with %#x on %d", orc, enmDomain);
return rc;
}
RTDECL(int) RTCrStoreCreateSnapshotById(PRTCRSTORE phStore, RTCRSTOREID enmStoreId, PRTERRINFO pErrInfo)
{
AssertReturn(enmStoreId > RTCRSTOREID_INVALID && enmStoreId < RTCRSTOREID_END, VERR_INVALID_PARAMETER);
/*
* Create an empty in-memory store.
*/
RTCRSTORE hStore;
int rc = RTCrStoreCreateInMem(&hStore, 128);
if (RT_SUCCESS(rc))
{
*phStore = hStore;
/*
* Load the certificates corresponding to the given virtual store ID.
*/
switch (enmStoreId)
{
case RTCRSTOREID_USER_TRUSTED_CAS_AND_CERTIFICATES:
rc = rtCrStoreAddCertsFromNativeKeystoreDomain(hStore, kSecPreferencesDomainUser,
kSecTrustSettingsDomainUser, rc, pErrInfo);
break;
case RTCRSTOREID_SYSTEM_TRUSTED_CAS_AND_CERTIFICATES:
rc = rtCrStoreAddCertsFromNativeKeystoreDomain(hStore, kSecPreferencesDomainSystem,
kSecTrustSettingsDomainSystem, rc, pErrInfo);
rc = rtCrStoreAddCertsFromNativeKeychainFile(hStore,
"/System/Library/Keychains/SystemRootCertificates.keychain",
kSecTrustSettingsDomainSystem, rc, pErrInfo);
break;
default:
AssertFailed(); /* implement me */
}
}
else
RTErrInfoSet(pErrInfo, rc, "RTCrStoreCreateInMem failed");
return rc;
}
RT_EXPORT_SYMBOL(RTCrStoreCreateSnapshotById);
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