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crypt32: Move decoding hash messages to a helper function.

This commit is contained in:
Juan Lang 2007-07-20 14:43:12 -07:00 committed by Alexandre Julliard
parent 815c3ccbdc
commit 52cc727348
1 changed files with 37 additions and 31 deletions
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68
dlls/crypt32/msg.c
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@ -693,6 +693,41 @@ static inline void CRYPT_FixUpAlgorithmID(CRYPT_ALGORITHM_IDENTIFIER *id)
id->Parameters.pbData = (BYTE *)id->pszObjId + strlen(id->pszObjId) + 1;
}
static BOOL CDecodeMsg_DecodeHashedContent(CDecodeMsg *msg,
CRYPT_DER_BLOB *blob)
{
BOOL ret;
CRYPT_DIGESTED_DATA *digestedData;
DWORD size;
ret = CRYPT_AsnDecodePKCSDigestedData(blob->pbData, blob->cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_DIGESTED_DATA *)&digestedData,
&size);
if (ret)
{
msg->type = CMSG_HASHED;
ContextPropertyList_SetProperty(msg->properties, CMSG_VERSION_PARAM,
(const BYTE *)&digestedData->version, sizeof(digestedData->version));
CDecodeMsg_SaveAlgorithmID(msg, CMSG_HASH_ALGORITHM_PARAM,
&digestedData->DigestAlgorithm);
ContextPropertyList_SetProperty(msg->properties,
CMSG_INNER_CONTENT_TYPE_PARAM,
(const BYTE *)digestedData->ContentInfo.pszObjId,
digestedData->ContentInfo.pszObjId ?
strlen(digestedData->ContentInfo.pszObjId) + 1 : 0);
if (digestedData->ContentInfo.Content.cbData)
CDecodeMsg_DecodeDataContent(msg,
&digestedData->ContentInfo.Content);
else
ContextPropertyList_SetProperty(msg->properties,
CMSG_CONTENT_PARAM, NULL, 0);
ContextPropertyList_SetProperty(msg->properties, CMSG_HASH_DATA_PARAM,
digestedData->hash.pbData, digestedData->hash.cbData);
LocalFree(digestedData);
}
return ret;
}
/* Decodes the content in blob as the type given, and updates the value
* (type, parameters, etc.) of msg based on what blob contains.
* It doesn't just use msg's type, to allow a recursive call from an implicitly
@ -702,7 +737,6 @@ static BOOL CDecodeMsg_DecodeContent(CDecodeMsg *msg, CRYPT_DER_BLOB *blob,
DWORD type)
{
BOOL ret;
DWORD size;
switch (type)
{
@ -711,38 +745,9 @@ static BOOL CDecodeMsg_DecodeContent(CDecodeMsg *msg, CRYPT_DER_BLOB *blob,
msg->type = CMSG_DATA;
break;
case CMSG_HASHED:
{
CRYPT_DIGESTED_DATA *digestedData;
ret = CRYPT_AsnDecodePKCSDigestedData(blob->pbData, blob->cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_DIGESTED_DATA *)&digestedData,
&size);
if (ret)
{
if ((ret = CDecodeMsg_DecodeHashedContent(msg, blob)))
msg->type = CMSG_HASHED;
ContextPropertyList_SetProperty(msg->properties,
CMSG_VERSION_PARAM, (const BYTE *)&digestedData->version,
sizeof(digestedData->version));
CDecodeMsg_SaveAlgorithmID(msg, CMSG_HASH_ALGORITHM_PARAM,
&digestedData->DigestAlgorithm);
ContextPropertyList_SetProperty(msg->properties,
CMSG_INNER_CONTENT_TYPE_PARAM,
(const BYTE *)digestedData->ContentInfo.pszObjId,
digestedData->ContentInfo.pszObjId ?
strlen(digestedData->ContentInfo.pszObjId) + 1 : 0);
if (digestedData->ContentInfo.Content.cbData)
CDecodeMsg_DecodeDataContent(msg,
&digestedData->ContentInfo.Content);
else
ContextPropertyList_SetProperty(msg->properties,
CMSG_CONTENT_PARAM, NULL, 0);
ContextPropertyList_SetProperty(msg->properties,
CMSG_HASH_DATA_PARAM, digestedData->hash.pbData,
digestedData->hash.cbData);
LocalFree(digestedData);
}
break;
}
case CMSG_ENVELOPED:
case CMSG_SIGNED:
FIXME("unimplemented for type %s\n", MSG_TYPE_STR(type));
@ -751,6 +756,7 @@ static BOOL CDecodeMsg_DecodeContent(CDecodeMsg *msg, CRYPT_DER_BLOB *blob,
default:
{
CRYPT_CONTENT_INFO *info;
DWORD size;
ret = CryptDecodeObjectEx(X509_ASN_ENCODING, PKCS_CONTENT_INFO,
msg->msg_data.pbData, msg->msg_data.cbData, CRYPT_DECODE_ALLOC_FLAG,