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/*
* Copyright 2006 Juan Lang
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
*/
#include <assert.h>
#include <stdarg.h>
#define NONAMELESSUNION
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "crypt32_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(crypt);
PCCRL_CONTEXT WINAPI CertCreateCRLContext(DWORD dwCertEncodingType,
const BYTE* pbCrlEncoded, DWORD cbCrlEncoded)
{
PCRL_CONTEXT crl = NULL;
BOOL ret;
PCRL_INFO crlInfo = NULL;
DWORD size = 0;
TRACE("(%08x, %p, %d)\n", dwCertEncodingType, pbCrlEncoded,
cbCrlEncoded);
if ((dwCertEncodingType & CERT_ENCODING_TYPE_MASK) != X509_ASN_ENCODING)
{
SetLastError(E_INVALIDARG);
return NULL;
}
ret = CryptDecodeObjectEx(dwCertEncodingType, X509_CERT_CRL_TO_BE_SIGNED,
pbCrlEncoded, cbCrlEncoded, CRYPT_DECODE_ALLOC_FLAG, NULL,
&crlInfo, &size);
if (ret)
{
BYTE *data = NULL;
crl = Context_CreateDataContext(sizeof(CRL_CONTEXT));
if (!crl)
goto end;
data = CryptMemAlloc(cbCrlEncoded);
if (!data)
{
CryptMemFree(crl);
crl = NULL;
goto end;
}
memcpy(data, pbCrlEncoded, cbCrlEncoded);
crl->dwCertEncodingType = dwCertEncodingType;
crl->pbCrlEncoded = data;
crl->cbCrlEncoded = cbCrlEncoded;
crl->pCrlInfo = crlInfo;
crl->hCertStore = 0;
}
end:
return crl;
}
BOOL WINAPI CertAddEncodedCRLToStore(HCERTSTORE hCertStore,
DWORD dwCertEncodingType, const BYTE *pbCrlEncoded, DWORD cbCrlEncoded,
DWORD dwAddDisposition, PCCRL_CONTEXT *ppCrlContext)
{
PCCRL_CONTEXT crl = CertCreateCRLContext(dwCertEncodingType,
pbCrlEncoded, cbCrlEncoded);
BOOL ret;
TRACE("(%p, %08x, %p, %d, %08x, %p)\n", hCertStore, dwCertEncodingType,
pbCrlEncoded, cbCrlEncoded, dwAddDisposition, ppCrlContext);
if (crl)
{
ret = CertAddCRLContextToStore(hCertStore, crl, dwAddDisposition,
ppCrlContext);
CertFreeCRLContext(crl);
}
else
ret = FALSE;
return ret;
}
typedef BOOL (*CrlCompareFunc)(PCCRL_CONTEXT pCrlContext, DWORD dwType,
DWORD dwFlags, const void *pvPara);
static BOOL compare_crl_any(PCCRL_CONTEXT pCrlContext, DWORD dwType,
DWORD dwFlags, const void *pvPara)
{
return TRUE;
}
static BOOL compare_crl_issued_by(PCCRL_CONTEXT pCrlContext, DWORD dwType,
DWORD dwFlags, const void *pvPara)
{
BOOL ret;
if (pvPara)
{
PCCERT_CONTEXT issuer = pvPara;
ret = CertCompareCertificateName(issuer->dwCertEncodingType,
&issuer->pCertInfo->Issuer, &pCrlContext->pCrlInfo->Issuer);
if (ret && (dwFlags & CRL_FIND_ISSUED_BY_SIGNATURE_FLAG))
ret = CryptVerifyCertificateSignatureEx(0,
issuer->dwCertEncodingType,
CRYPT_VERIFY_CERT_SIGN_SUBJECT_CRL, (void *)pCrlContext,
CRYPT_VERIFY_CERT_SIGN_ISSUER_CERT, (void *)issuer, 0, NULL);
if (ret && (dwFlags & CRL_FIND_ISSUED_BY_AKI_FLAG))
{
PCERT_EXTENSION aki = CertFindExtension(
szOID_AUTHORITY_KEY_IDENTIFIER2, pCrlContext->pCrlInfo->cExtension,
pCrlContext->pCrlInfo->rgExtension);
if (aki)
{
CERT_EXTENSION *ski;
if ((ski = CertFindExtension(szOID_SUBJECT_KEY_IDENTIFIER,
issuer->pCertInfo->cExtension,
issuer->pCertInfo->rgExtension)))
{
if (aki->Value.cbData == ski->Value.cbData)
ret = !memcmp(aki->Value.pbData, ski->Value.pbData,
aki->Value.cbData);
else
ret = FALSE;
}
else
ret = FALSE;
}
/* else: a CRL without an AKI matches any cert */
}
}
else
ret = TRUE;
return ret;
}
static BOOL compare_crl_existing(PCCRL_CONTEXT pCrlContext, DWORD dwType,
DWORD dwFlags, const void *pvPara)
{
BOOL ret;
if (pvPara)
{
PCCRL_CONTEXT crl = pvPara;
ret = CertCompareCertificateName(pCrlContext->dwCertEncodingType,
&pCrlContext->pCrlInfo->Issuer, &crl->pCrlInfo->Issuer);
}
else
ret = TRUE;
return ret;
}
static BOOL compare_crl_issued_for(PCCRL_CONTEXT pCrlContext, DWORD dwType,
DWORD dwFlags, const void *pvPara)
{
const CRL_FIND_ISSUED_FOR_PARA *para = pvPara;
BOOL ret;
ret = CertCompareCertificateName(para->pIssuerCert->dwCertEncodingType,
¶->pIssuerCert->pCertInfo->Issuer, &pCrlContext->pCrlInfo->Issuer);
return ret;
}
PCCRL_CONTEXT WINAPI CertFindCRLInStore(HCERTSTORE hCertStore,
DWORD dwCertEncodingType, DWORD dwFindFlags, DWORD dwFindType,
const void *pvFindPara, PCCRL_CONTEXT pPrevCrlContext)
{
PCCRL_CONTEXT ret;
CrlCompareFunc compare;
TRACE("(%p, %d, %d, %d, %p, %p)\n", hCertStore, dwCertEncodingType,
dwFindFlags, dwFindType, pvFindPara, pPrevCrlContext);
switch (dwFindType)
{
case CRL_FIND_ANY:
compare = compare_crl_any;
break;
case CRL_FIND_ISSUED_BY:
compare = compare_crl_issued_by;
break;
case CRL_FIND_EXISTING:
compare = compare_crl_existing;
break;
case CRL_FIND_ISSUED_FOR:
compare = compare_crl_issued_for;
break;
default:
FIXME("find type %08x unimplemented\n", dwFindType);
compare = NULL;
}
if (compare)
{
BOOL matches = FALSE;
ret = pPrevCrlContext;
do {
ret = CertEnumCRLsInStore(hCertStore, ret);
if (ret)
matches = compare(ret, dwFindType, dwFindFlags, pvFindPara);
} while (ret != NULL && !matches);
if (!ret)
SetLastError(CRYPT_E_NOT_FOUND);
}
else
{
SetLastError(CRYPT_E_NOT_FOUND);
ret = NULL;
}
return ret;
}
PCCRL_CONTEXT WINAPI CertGetCRLFromStore(HCERTSTORE hCertStore,
PCCERT_CONTEXT pIssuerContext, PCCRL_CONTEXT pPrevCrlContext, DWORD *pdwFlags)
{
static const DWORD supportedFlags = CERT_STORE_SIGNATURE_FLAG |
CERT_STORE_TIME_VALIDITY_FLAG | CERT_STORE_BASE_CRL_FLAG |
CERT_STORE_DELTA_CRL_FLAG;
PCCRL_CONTEXT ret;
TRACE("(%p, %p, %p, %08x)\n", hCertStore, pIssuerContext, pPrevCrlContext,
*pdwFlags);
if (*pdwFlags & ~supportedFlags)
{
SetLastError(E_INVALIDARG);
return NULL;
}
if (pIssuerContext)
ret = CertFindCRLInStore(hCertStore, pIssuerContext->dwCertEncodingType,
0, CRL_FIND_ISSUED_BY, pIssuerContext, pPrevCrlContext);
else
ret = CertFindCRLInStore(hCertStore, 0, 0, CRL_FIND_ANY, NULL,
pPrevCrlContext);
if (ret)
{
if (*pdwFlags & CERT_STORE_TIME_VALIDITY_FLAG)
{
if (0 == CertVerifyCRLTimeValidity(NULL, ret->pCrlInfo))
*pdwFlags &= ~CERT_STORE_TIME_VALIDITY_FLAG;
}
if (*pdwFlags & CERT_STORE_SIGNATURE_FLAG)
{
if (CryptVerifyCertificateSignatureEx(0, ret->dwCertEncodingType,
CRYPT_VERIFY_CERT_SIGN_SUBJECT_CRL, (void *)ret,
CRYPT_VERIFY_CERT_SIGN_ISSUER_CERT, (void *)pIssuerContext, 0,
NULL))
*pdwFlags &= ~CERT_STORE_SIGNATURE_FLAG;
}
}
return ret;
}
PCCRL_CONTEXT WINAPI CertDuplicateCRLContext(PCCRL_CONTEXT pCrlContext)
{
TRACE("(%p)\n", pCrlContext);
if (pCrlContext)
Context_AddRef((void *)pCrlContext, sizeof(CRL_CONTEXT));
return pCrlContext;
}
static void CrlDataContext_Free(void *context)
{
PCRL_CONTEXT crlContext = context;
CryptMemFree(crlContext->pbCrlEncoded);
LocalFree(crlContext->pCrlInfo);
}
BOOL WINAPI CertFreeCRLContext( PCCRL_CONTEXT pCrlContext)
{
BOOL ret = TRUE;
TRACE("(%p)\n", pCrlContext);
if (pCrlContext)
ret = Context_Release((void *)pCrlContext, sizeof(CRL_CONTEXT),
CrlDataContext_Free);
return ret;
}
DWORD WINAPI CertEnumCRLContextProperties(PCCRL_CONTEXT pCRLContext,
DWORD dwPropId)
{
PCONTEXT_PROPERTY_LIST properties = Context_GetProperties(
pCRLContext, sizeof(CRL_CONTEXT));
DWORD ret;
TRACE("(%p, %d)\n", pCRLContext, dwPropId);
if (properties)
ret = ContextPropertyList_EnumPropIDs(properties, dwPropId);
else
ret = 0;
return ret;
}
static BOOL CRLContext_SetProperty(PCCRL_CONTEXT context, DWORD dwPropId,
DWORD dwFlags, const void *pvData);
static BOOL CRLContext_GetHashProp(PCCRL_CONTEXT context, DWORD dwPropId,
ALG_ID algID, const BYTE *toHash, DWORD toHashLen, void *pvData,
DWORD *pcbData)
{
BOOL ret = CryptHashCertificate(0, algID, 0, toHash, toHashLen, pvData,
pcbData);
if (ret && pvData)
{
CRYPT_DATA_BLOB blob = { *pcbData, pvData };
ret = CRLContext_SetProperty(context, dwPropId, 0, &blob);
}
return ret;
}
static BOOL CRLContext_GetProperty(PCCRL_CONTEXT context, DWORD dwPropId,
void *pvData, DWORD *pcbData)
{
PCONTEXT_PROPERTY_LIST properties =
Context_GetProperties(context, sizeof(CRL_CONTEXT));
BOOL ret;
CRYPT_DATA_BLOB blob;
TRACE("(%p, %d, %p, %p)\n", context, dwPropId, pvData, pcbData);
if (properties)
ret = ContextPropertyList_FindProperty(properties, dwPropId, &blob);
else
ret = FALSE;
if (ret)
{
if (!pvData)
*pcbData = blob.cbData;
else if (*pcbData < blob.cbData)
{
SetLastError(ERROR_MORE_DATA);
*pcbData = blob.cbData;
ret = FALSE;
}
else
{
memcpy(pvData, blob.pbData, blob.cbData);
*pcbData = blob.cbData;
}
}
else
{
/* Implicit properties */
switch (dwPropId)
{
case CERT_SHA1_HASH_PROP_ID:
ret = CRLContext_GetHashProp(context, dwPropId, CALG_SHA1,
context->pbCrlEncoded, context->cbCrlEncoded, pvData,
pcbData);
break;
case CERT_MD5_HASH_PROP_ID:
ret = CRLContext_GetHashProp(context, dwPropId, CALG_MD5,
context->pbCrlEncoded, context->cbCrlEncoded, pvData,
pcbData);
break;
default:
SetLastError(CRYPT_E_NOT_FOUND);
}
}
TRACE("returning %d\n", ret);
return ret;
}
BOOL WINAPI CertGetCRLContextProperty(PCCRL_CONTEXT pCRLContext,
DWORD dwPropId, void *pvData, DWORD *pcbData)
{
BOOL ret;
TRACE("(%p, %d, %p, %p)\n", pCRLContext, dwPropId, pvData, pcbData);
switch (dwPropId)
{
case 0:
case CERT_CERT_PROP_ID:
case CERT_CRL_PROP_ID:
case CERT_CTL_PROP_ID:
SetLastError(E_INVALIDARG);
ret = FALSE;
break;
case CERT_ACCESS_STATE_PROP_ID:
if (!pvData)
{
*pcbData = sizeof(DWORD);
ret = TRUE;
}
else if (*pcbData < sizeof(DWORD))
{
SetLastError(ERROR_MORE_DATA);
*pcbData = sizeof(DWORD);
ret = FALSE;
}
else
{
if (pCRLContext->hCertStore)
ret = CertGetStoreProperty(pCRLContext->hCertStore, dwPropId,
pvData, pcbData);
else
*(DWORD *)pvData = 0;
ret = TRUE;
}
break;
default:
ret = CRLContext_GetProperty(pCRLContext, dwPropId, pvData,
pcbData);
}
return ret;
}
static BOOL CRLContext_SetProperty(PCCRL_CONTEXT context, DWORD dwPropId,
DWORD dwFlags, const void *pvData)
{
PCONTEXT_PROPERTY_LIST properties =
Context_GetProperties(context, sizeof(CRL_CONTEXT));
BOOL ret;
TRACE("(%p, %d, %08x, %p)\n", context, dwPropId, dwFlags, pvData);
if (!properties)
ret = FALSE;
else if (!pvData)
{
ContextPropertyList_RemoveProperty(properties, dwPropId);
ret = TRUE;
}
else
{
switch (dwPropId)
{
case CERT_AUTO_ENROLL_PROP_ID:
case CERT_CTL_USAGE_PROP_ID: /* same as CERT_ENHKEY_USAGE_PROP_ID */
case CERT_DESCRIPTION_PROP_ID:
case CERT_FRIENDLY_NAME_PROP_ID:
case CERT_HASH_PROP_ID:
case CERT_KEY_IDENTIFIER_PROP_ID:
case CERT_MD5_HASH_PROP_ID:
case CERT_NEXT_UPDATE_LOCATION_PROP_ID:
case CERT_PUBKEY_ALG_PARA_PROP_ID:
case CERT_PVK_FILE_PROP_ID:
case CERT_SIGNATURE_HASH_PROP_ID:
case CERT_ISSUER_PUBLIC_KEY_MD5_HASH_PROP_ID:
case CERT_SUBJECT_NAME_MD5_HASH_PROP_ID:
case CERT_SUBJECT_PUBLIC_KEY_MD5_HASH_PROP_ID:
case CERT_ENROLLMENT_PROP_ID:
case CERT_CROSS_CERT_DIST_POINTS_PROP_ID:
case CERT_RENEWAL_PROP_ID:
{
PCRYPT_DATA_BLOB blob = (PCRYPT_DATA_BLOB)pvData;
ret = ContextPropertyList_SetProperty(properties, dwPropId,
blob->pbData, blob->cbData);
break;
}
case CERT_DATE_STAMP_PROP_ID:
ret = ContextPropertyList_SetProperty(properties, dwPropId,
pvData, sizeof(FILETIME));
break;
default:
FIXME("%d: stub\n", dwPropId);
ret = FALSE;
}
}
TRACE("returning %d\n", ret);
return ret;
}
BOOL WINAPI CertSetCRLContextProperty(PCCRL_CONTEXT pCRLContext,
DWORD dwPropId, DWORD dwFlags, const void *pvData)
{
BOOL ret;
TRACE("(%p, %d, %08x, %p)\n", pCRLContext, dwPropId, dwFlags, pvData);
/* Handle special cases for "read-only"/invalid prop IDs. Windows just
* crashes on most of these, I'll be safer.
*/
switch (dwPropId)
{
case 0:
case CERT_ACCESS_STATE_PROP_ID:
case CERT_CERT_PROP_ID:
case CERT_CRL_PROP_ID:
case CERT_CTL_PROP_ID:
SetLastError(E_INVALIDARG);
return FALSE;
}
ret = CRLContext_SetProperty(pCRLContext, dwPropId, dwFlags, pvData);
TRACE("returning %d\n", ret);
return ret;
}
static BOOL compare_dist_point_name(const CRL_DIST_POINT_NAME *name1,
const CRL_DIST_POINT_NAME *name2)
{
BOOL match;
if (name1->dwDistPointNameChoice == name2->dwDistPointNameChoice)
{
match = TRUE;
if (name1->dwDistPointNameChoice == CRL_DIST_POINT_FULL_NAME)
{
if (name1->u.FullName.cAltEntry == name2->u.FullName.cAltEntry)
{
DWORD i;
for (i = 0; match && i < name1->u.FullName.cAltEntry; i++)
{
const CERT_ALT_NAME_ENTRY *entry1 =
&name1->u.FullName.rgAltEntry[i];
const CERT_ALT_NAME_ENTRY *entry2 =
&name2->u.FullName.rgAltEntry[i];
if (entry1->dwAltNameChoice == entry2->dwAltNameChoice)
{
switch (entry1->dwAltNameChoice)
{
case CERT_ALT_NAME_URL:
match = !strcmpiW(entry1->u.pwszURL,
entry2->u.pwszURL);
break;
case CERT_ALT_NAME_DIRECTORY_NAME:
match = (entry1->u.DirectoryName.cbData ==
entry2->u.DirectoryName.cbData) &&
!memcmp(entry1->u.DirectoryName.pbData,
entry2->u.DirectoryName.pbData,
entry1->u.DirectoryName.cbData);
break;
default:
FIXME("unimplemented for type %d\n",
entry1->dwAltNameChoice);
match = FALSE;
}
}
else
match = FALSE;
}
}
else
match = FALSE;
}
}
else
match = FALSE;
return match;
}
static BOOL match_dist_point_with_issuing_dist_point(
const CRL_DIST_POINT *distPoint, const CRL_ISSUING_DIST_POINT *idp)
{
BOOL match;
/* While RFC 5280, section 4.2.1.13 recommends against segmenting
* CRL distribution points by reasons, it doesn't preclude doing so.
* "This profile RECOMMENDS against segmenting CRLs by reason code."
* If the issuing distribution point for this CRL is only valid for
* some reasons, only match if the reasons covered also match the
* reasons in the CRL distribution point.
*/
if (idp->OnlySomeReasonFlags.cbData)
{
if (idp->OnlySomeReasonFlags.cbData == distPoint->ReasonFlags.cbData)
{
DWORD i;
match = TRUE;
for (i = 0; match && i < distPoint->ReasonFlags.cbData; i++)
if (idp->OnlySomeReasonFlags.pbData[i] !=
distPoint->ReasonFlags.pbData[i])
match = FALSE;
}
else
match = FALSE;
}
else
match = TRUE;
if (match)
match = compare_dist_point_name(&idp->DistPointName,
&distPoint->DistPointName);
return match;
}
BOOL WINAPI CertIsValidCRLForCertificate(PCCERT_CONTEXT pCert,
PCCRL_CONTEXT pCrl, DWORD dwFlags, void *pvReserved)
{
PCERT_EXTENSION ext;
BOOL ret;
TRACE("(%p, %p, %08x, %p)\n", pCert, pCrl, dwFlags, pvReserved);
if (!pCert)
return TRUE;
if ((ext = CertFindExtension(szOID_ISSUING_DIST_POINT,
pCrl->pCrlInfo->cExtension, pCrl->pCrlInfo->rgExtension)))
{
CRL_ISSUING_DIST_POINT *idp;
DWORD size;
if ((ret = CryptDecodeObjectEx(pCrl->dwCertEncodingType,
X509_ISSUING_DIST_POINT, ext->Value.pbData, ext->Value.cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, &idp, &size)))
{
if ((ext = CertFindExtension(szOID_CRL_DIST_POINTS,
pCert->pCertInfo->cExtension, pCert->pCertInfo->rgExtension)))
{
CRL_DIST_POINTS_INFO *distPoints;
if ((ret = CryptDecodeObjectEx(pCert->dwCertEncodingType,
X509_CRL_DIST_POINTS, ext->Value.pbData, ext->Value.cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, &distPoints, &size)))
{
DWORD i;
ret = FALSE;
for (i = 0; !ret && i < distPoints->cDistPoint; i++)
ret = match_dist_point_with_issuing_dist_point(
&distPoints->rgDistPoint[i], idp);
if (!ret)
SetLastError(CRYPT_E_NO_MATCH);
LocalFree(distPoints);
}
}
else
{
/* no CRL dist points extension in cert, can't match the CRL
* (which has an issuing dist point extension)
*/
ret = FALSE;
SetLastError(CRYPT_E_NO_MATCH);
}
LocalFree(idp);
}
}
else
ret = TRUE;
return ret;
}
static PCRL_ENTRY CRYPT_FindCertificateInCRL(PCERT_INFO cert, const CRL_INFO *crl)
{
DWORD i;
PCRL_ENTRY entry = NULL;
for (i = 0; !entry && i < crl->cCRLEntry; i++)
if (CertCompareIntegerBlob(&crl->rgCRLEntry[i].SerialNumber,
&cert->SerialNumber))
entry = &crl->rgCRLEntry[i];
return entry;
}
BOOL WINAPI CertFindCertificateInCRL(PCCERT_CONTEXT pCert,
PCCRL_CONTEXT pCrlContext, DWORD dwFlags, void *pvReserved,
PCRL_ENTRY *ppCrlEntry)
{
TRACE("(%p, %p, %08x, %p, %p)\n", pCert, pCrlContext, dwFlags, pvReserved,
ppCrlEntry);
*ppCrlEntry = CRYPT_FindCertificateInCRL(pCert->pCertInfo,
pCrlContext->pCrlInfo);
return TRUE;
}
BOOL WINAPI CertVerifyCRLRevocation(DWORD dwCertEncodingType,
PCERT_INFO pCertId, DWORD cCrlInfo, PCRL_INFO rgpCrlInfo[])
{
DWORD i;
PCRL_ENTRY entry = NULL;
TRACE("(%08x, %p, %d, %p)\n", dwCertEncodingType, pCertId, cCrlInfo,
rgpCrlInfo);
for (i = 0; !entry && i < cCrlInfo; i++)
entry = CRYPT_FindCertificateInCRL(pCertId, rgpCrlInfo[i]);
return entry == NULL;
}
LONG WINAPI CertVerifyCRLTimeValidity(LPFILETIME pTimeToVerify,
PCRL_INFO pCrlInfo)
{
FILETIME fileTime;
LONG ret;
if (!pTimeToVerify)
{
GetSystemTimeAsFileTime(&fileTime);
pTimeToVerify = &fileTime;
}
if ((ret = CompareFileTime(pTimeToVerify, &pCrlInfo->ThisUpdate)) >= 0)
{
ret = CompareFileTime(pTimeToVerify, &pCrlInfo->NextUpdate);
if (ret < 0)
ret = 0;
}
return ret;
}