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crypt32: Split querying PKCS messages into helper functions.

This commit is contained in:
Juan Lang 2008-12-11 16:18:47 -08:00 committed by Alexandre Julliard
parent 626a6fe15d
commit 62cbf42689
1 changed files with 112 additions and 80 deletions
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192
dlls/crypt32/object.c
View File

@ -322,6 +322,110 @@ static BOOL CRYPT_QuerySerializedStoreObject(DWORD dwObjectType,
return ret;
}
static BOOL CRYPT_QuerySignedMessage(const CRYPT_DATA_BLOB *blob,
DWORD *pdwMsgAndCertEncodingType, DWORD *pdwContentType, HCRYPTMSG *phMsg)
{
DWORD encodingType = X509_ASN_ENCODING | PKCS_7_ASN_ENCODING;
BOOL ret = FALSE;
HCRYPTMSG msg;
if ((msg = CryptMsgOpenToDecode(encodingType, 0, 0, 0, NULL, NULL)))
{
ret = CryptMsgUpdate(msg, blob->pbData, blob->cbData, TRUE);
if (ret)
{
DWORD type, len = sizeof(type);
ret = CryptMsgGetParam(msg, CMSG_TYPE_PARAM, 0, &type, &len);
if (ret)
{
if (type != CMSG_SIGNED)
{
SetLastError(ERROR_INVALID_DATA);
ret = FALSE;
}
}
}
if (!ret)
{
CryptMsgClose(msg);
msg = CryptMsgOpenToDecode(encodingType, 0, CMSG_SIGNED, 0, NULL,
NULL);
if (msg)
{
ret = CryptMsgUpdate(msg, blob->pbData, blob->cbData, TRUE);
if (!ret)
{
CryptMsgClose(msg);
msg = NULL;
}
}
}
}
if (ret)
{
if (pdwMsgAndCertEncodingType)
*pdwMsgAndCertEncodingType = encodingType;
if (pdwContentType)
*pdwContentType = CERT_QUERY_CONTENT_PKCS7_SIGNED;
if (phMsg)
*phMsg = msg;
}
return ret;
}
static BOOL CRYPT_QueryUnsignedMessage(const CRYPT_DATA_BLOB *blob,
DWORD *pdwMsgAndCertEncodingType, DWORD *pdwContentType, HCRYPTMSG *phMsg)
{
DWORD encodingType = X509_ASN_ENCODING | PKCS_7_ASN_ENCODING;
BOOL ret = FALSE;
HCRYPTMSG msg;
if ((msg = CryptMsgOpenToDecode(encodingType, 0, 0, 0, NULL, NULL)))
{
ret = CryptMsgUpdate(msg, blob->pbData, blob->cbData, TRUE);
if (ret)
{
DWORD type, len = sizeof(type);
ret = CryptMsgGetParam(msg, CMSG_TYPE_PARAM, 0, &type, &len);
if (ret)
{
if (type != CMSG_DATA)
{
SetLastError(ERROR_INVALID_DATA);
ret = FALSE;
}
}
}
if (!ret)
{
CryptMsgClose(msg);
msg = CryptMsgOpenToDecode(encodingType, 0, CMSG_DATA, 0,
NULL, NULL);
if (msg)
{
ret = CryptMsgUpdate(msg, blob->pbData, blob->cbData, TRUE);
if (!ret)
{
CryptMsgClose(msg);
msg = NULL;
}
}
}
}
if (ret)
{
if (pdwMsgAndCertEncodingType)
*pdwMsgAndCertEncodingType = encodingType;
if (pdwContentType)
*pdwContentType = CERT_QUERY_CONTENT_PKCS7_SIGNED;
if (phMsg)
*phMsg = msg;
}
return ret;
}
/* Used to decode non-embedded messages */
static BOOL CRYPT_QueryMessageObject(DWORD dwObjectType, const void *pvObject,
DWORD dwExpectedContentTypeFlags, DWORD *pdwMsgAndCertEncodingType,
@ -354,88 +458,16 @@ static BOOL CRYPT_QueryMessageObject(DWORD dwObjectType, const void *pvObject,
return FALSE;
ret = FALSE;
/* Try it first as a PKCS content info */
if ((dwExpectedContentTypeFlags & CERT_QUERY_CONTENT_FLAG_PKCS7_SIGNED) ||
(dwExpectedContentTypeFlags & CERT_QUERY_CONTENT_FLAG_PKCS7_UNSIGNED))
{
msg = CryptMsgOpenToDecode(encodingType, 0, 0, 0, NULL, NULL);
if (msg)
{
ret = CryptMsgUpdate(msg, blob->pbData, blob->cbData, TRUE);
if (ret)
{
DWORD type, len = sizeof(type);
ret = CryptMsgGetParam(msg, CMSG_TYPE_PARAM, 0, &type, &len);
if (ret)
{
if ((dwExpectedContentTypeFlags &
CERT_QUERY_CONTENT_FLAG_PKCS7_SIGNED))
{
if (type != CMSG_SIGNED)
{
SetLastError(ERROR_INVALID_DATA);
ret = FALSE;
}
else if (pdwContentType)
*pdwContentType = CERT_QUERY_CONTENT_PKCS7_SIGNED;
}
else if ((dwExpectedContentTypeFlags &
CERT_QUERY_CONTENT_FLAG_PKCS7_UNSIGNED))
{
if (type != CMSG_DATA)
{
SetLastError(ERROR_INVALID_DATA);
ret = FALSE;
}
else if (pdwContentType)
*pdwContentType = CERT_QUERY_CONTENT_PKCS7_UNSIGNED;
}
}
}
if (!ret)
{
CryptMsgClose(msg);
msg = NULL;
}
}
}
/* Failing that, try explicitly typed messages */
if (!ret &&
(dwExpectedContentTypeFlags & CERT_QUERY_CONTENT_FLAG_PKCS7_SIGNED))
{
msg = CryptMsgOpenToDecode(encodingType, 0, CMSG_SIGNED, 0, NULL, NULL);
if (msg)
{
ret = CryptMsgUpdate(msg, blob->pbData, blob->cbData, TRUE);
if (!ret)
{
CryptMsgClose(msg);
msg = NULL;
}
}
if (msg && pdwContentType)
*pdwContentType = CERT_QUERY_CONTENT_PKCS7_SIGNED;
}
/* Try it first as a signed message */
if (dwExpectedContentTypeFlags & CERT_QUERY_CONTENT_FLAG_PKCS7_SIGNED)
ret = CRYPT_QuerySignedMessage(blob, pdwMsgAndCertEncodingType,
pdwContentType, &msg);
/* Failing that, try as an unsigned message */
if (!ret &&
(dwExpectedContentTypeFlags & CERT_QUERY_CONTENT_FLAG_PKCS7_UNSIGNED))
{
msg = CryptMsgOpenToDecode(encodingType, 0, CMSG_DATA, 0, NULL, NULL);
if (msg)
{
ret = CryptMsgUpdate(msg, blob->pbData, blob->cbData, TRUE);
if (!ret)
{
CryptMsgClose(msg);
msg = NULL;
}
}
if (msg && pdwContentType)
*pdwContentType = CERT_QUERY_CONTENT_PKCS7_UNSIGNED;
}
if (pdwMsgAndCertEncodingType)
*pdwMsgAndCertEncodingType = encodingType;
if (msg)
ret = CRYPT_QueryUnsignedMessage(blob, pdwMsgAndCertEncodingType,
pdwContentType, &msg);
if (ret)
{
if (phMsg)
*phMsg = msg;