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crypt32: Implement decoding cert policy constraints.

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This commit is contained in:
Juan Lang 2009-11-06 12:47:15 -08:00 committed by Alexandre Julliard
parent 32ad424972
commit fbcce9f308
2 changed files with 138 additions and 2 deletions
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138
dlls/crypt32/decode.c
View file

@ -3685,6 +3685,139 @@ static BOOL WINAPI CRYPT_AsnDecodeCertPolicyMappings(DWORD dwCertEncodingType,
return ret;
}
static BOOL CRYPT_AsnDecodeRequireExplicit(const BYTE *pbEncoded,
DWORD cbEncoded, DWORD dwFlags, void *pvStructInfo, DWORD *pcbStructInfo,
DWORD *pcbDecoded)
{
BOOL ret;
DWORD skip, size = sizeof(skip);
if (!cbEncoded)
{
SetLastError(CRYPT_E_ASN1_EOD);
return FALSE;
}
if (pbEncoded[0] != (ASN_CONTEXT | 0))
{
SetLastError(CRYPT_E_ASN1_BADTAG);
return FALSE;
}
if ((ret = CRYPT_AsnDecodeIntInternal(pbEncoded, cbEncoded, dwFlags,
&skip, &size, pcbDecoded)))
{
DWORD bytesNeeded = MEMBERSIZE(CERT_POLICY_CONSTRAINTS_INFO,
fRequireExplicitPolicy, fInhibitPolicyMapping);
if (!pvStructInfo)
*pcbStructInfo = bytesNeeded;
else if (*pcbStructInfo < bytesNeeded)
{
*pcbStructInfo = bytesNeeded;
SetLastError(ERROR_MORE_DATA);
ret = FALSE;
}
else
{
CERT_POLICY_CONSTRAINTS_INFO *info =
(CERT_POLICY_CONSTRAINTS_INFO *)((BYTE *)pvStructInfo -
offsetof(CERT_POLICY_CONSTRAINTS_INFO, fRequireExplicitPolicy));
*pcbStructInfo = bytesNeeded;
/* The BOOL is implicit: if the integer is present, then it's
* TRUE.
*/
info->fRequireExplicitPolicy = TRUE;
info->dwRequireExplicitPolicySkipCerts = skip;
}
}
return ret;
}
static BOOL CRYPT_AsnDecodeInhibitMapping(const BYTE *pbEncoded,
DWORD cbEncoded, DWORD dwFlags, void *pvStructInfo, DWORD *pcbStructInfo,
DWORD *pcbDecoded)
{
BOOL ret;
DWORD skip, size = sizeof(skip);
if (!cbEncoded)
{
SetLastError(CRYPT_E_ASN1_EOD);
return FALSE;
}
if (pbEncoded[0] != (ASN_CONTEXT | 1))
{
SetLastError(CRYPT_E_ASN1_BADTAG);
return FALSE;
}
if ((ret = CRYPT_AsnDecodeIntInternal(pbEncoded, cbEncoded, dwFlags,
&skip, &size, pcbDecoded)))
{
DWORD bytesNeeded = FINALMEMBERSIZE(CERT_POLICY_CONSTRAINTS_INFO,
fInhibitPolicyMapping);
if (!pvStructInfo)
*pcbStructInfo = bytesNeeded;
else if (*pcbStructInfo < bytesNeeded)
{
*pcbStructInfo = bytesNeeded;
SetLastError(ERROR_MORE_DATA);
ret = FALSE;
}
else
{
CERT_POLICY_CONSTRAINTS_INFO *info =
(CERT_POLICY_CONSTRAINTS_INFO *)((BYTE *)pvStructInfo -
offsetof(CERT_POLICY_CONSTRAINTS_INFO, fInhibitPolicyMapping));
*pcbStructInfo = bytesNeeded;
/* The BOOL is implicit: if the integer is present, then it's
* TRUE.
*/
info->fInhibitPolicyMapping = TRUE;
info->dwInhibitPolicyMappingSkipCerts = skip;
}
}
return ret;
}
static BOOL WINAPI CRYPT_AsnDecodeCertPolicyConstraints(
DWORD dwCertEncodingType, LPCSTR lpszStructType, const BYTE *pbEncoded,
DWORD cbEncoded, DWORD dwFlags, PCRYPT_DECODE_PARA pDecodePara,
void *pvStructInfo, DWORD *pcbStructInfo)
{
BOOL ret = FALSE;
TRACE("%p, %d, %08x, %p, %p, %d\n", pbEncoded, cbEncoded, dwFlags,
pDecodePara, pvStructInfo, pvStructInfo ? *pcbStructInfo : 0);
__TRY
{
struct AsnDecodeSequenceItem items[] = {
{ ASN_CONTEXT | 0,
offsetof(CERT_POLICY_CONSTRAINTS_INFO, fRequireExplicitPolicy),
CRYPT_AsnDecodeRequireExplicit,
MEMBERSIZE(CERT_POLICY_CONSTRAINTS_INFO, fRequireExplicitPolicy,
fInhibitPolicyMapping), TRUE, FALSE, 0, 0 },
{ ASN_CONTEXT | 1,
offsetof(CERT_POLICY_CONSTRAINTS_INFO, fInhibitPolicyMapping),
CRYPT_AsnDecodeInhibitMapping,
FINALMEMBERSIZE(CERT_POLICY_CONSTRAINTS_INFO, fInhibitPolicyMapping),
TRUE, FALSE, 0, 0 },
};
ret = CRYPT_AsnDecodeSequence(items, sizeof(items) / sizeof(items[0]),
pbEncoded, cbEncoded, dwFlags, pDecodePara, pvStructInfo,
pcbStructInfo, NULL, NULL);
}
__EXCEPT_PAGE_FAULT
{
SetLastError(STATUS_ACCESS_VIOLATION);
}
__ENDTRY
return ret;
}
#define RSA1_MAGIC 0x31415352
struct DECODED_RSA_PUB_KEY
@ -5550,6 +5683,9 @@ static CryptDecodeObjectExFunc CRYPT_GetBuiltinDecoder(DWORD dwCertEncodingType,
case LOWORD(X509_POLICY_MAPPINGS):
decodeFunc = CRYPT_AsnDecodeCertPolicyMappings;
break;
case LOWORD(X509_POLICY_CONSTRAINTS):
decodeFunc = CRYPT_AsnDecodeCertPolicyConstraints;
break;
case LOWORD(PKCS7_SIGNER_INFO):
decodeFunc = CRYPT_AsnDecodePKCSSignerInfo;
break;
@ -5596,6 +5732,8 @@ static CryptDecodeObjectExFunc CRYPT_GetBuiltinDecoder(DWORD dwCertEncodingType,
decodeFunc = CRYPT_AsnDecodeCertPolicies;
else if (!strcmp(lpszStructType, szOID_POLICY_MAPPINGS))
decodeFunc = CRYPT_AsnDecodeCertPolicyMappings;
else if (!strcmp(lpszStructType, szOID_POLICY_CONSTRAINTS))
decodeFunc = CRYPT_AsnDecodeCertPolicyConstraints;
else if (!strcmp(lpszStructType, szOID_ENHANCED_KEY_USAGE))
decodeFunc = CRYPT_AsnDecodeEnhancedKeyUsage;
else if (!strcmp(lpszStructType, szOID_ISSUING_DIST_POINT))

2
dlls/crypt32/tests/encode.c
View file

@ -7643,7 +7643,6 @@ static void test_decodeCertPolicyConstraints(DWORD dwEncoding)
ret = pCryptDecodeObjectEx(dwEncoding, X509_POLICY_CONSTRAINTS,
emptySequence, sizeof(emptySequence), CRYPT_DECODE_ALLOC_FLAG, NULL,
&info, &size);
todo_wine {
ok(ret, "CryptDecodeObjectEx failed: %08x\n", GetLastError());
if (ret)
{
@ -7699,7 +7698,6 @@ static void test_decodeCertPolicyConstraints(DWORD dwEncoding)
info->dwInhibitPolicyMappingSkipCerts);
LocalFree(info);
}
}
}
/* Free *pInfo with HeapFree */