Sweden-Number/dlls/crypt32/msg.c

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/*
* Copyright 2007 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 <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(crypt);
/* Called when a message's ref count reaches zero. Free any message-specific
* data here.
*/
typedef void (*CryptMsgCloseFunc)(HCRYPTMSG msg);
typedef BOOL (*CryptMsgGetParamFunc)(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData);
typedef BOOL (*CryptMsgUpdateFunc)(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal);
typedef struct _CryptMsgBase
{
LONG ref;
DWORD open_flags;
BOOL streamed;
CMSG_STREAM_INFO stream_info;
BOOL finalized;
CryptMsgCloseFunc close;
CryptMsgUpdateFunc update;
CryptMsgGetParamFunc get_param;
} CryptMsgBase;
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static inline void CryptMsgBase_Init(CryptMsgBase *msg, DWORD dwFlags,
PCMSG_STREAM_INFO pStreamInfo, CryptMsgCloseFunc close,
CryptMsgGetParamFunc get_param, CryptMsgUpdateFunc update)
{
msg->ref = 1;
msg->open_flags = dwFlags;
if (pStreamInfo)
{
msg->streamed = TRUE;
memcpy(&msg->stream_info, pStreamInfo, sizeof(msg->stream_info));
}
else
{
msg->streamed = FALSE;
memset(&msg->stream_info, 0, sizeof(msg->stream_info));
}
msg->close = close;
msg->get_param = get_param;
msg->update = update;
msg->finalized = FALSE;
}
typedef struct _CDataEncodeMsg
{
CryptMsgBase base;
DWORD bare_content_len;
LPBYTE bare_content;
} CDataEncodeMsg;
static const BYTE empty_data_content[] = { 0x04,0x00 };
static void CDataEncodeMsg_Close(HCRYPTMSG hCryptMsg)
{
CDataEncodeMsg *msg = (CDataEncodeMsg *)hCryptMsg;
if (msg->bare_content != empty_data_content)
LocalFree(msg->bare_content);
}
static BOOL CDataEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal)
{
CDataEncodeMsg *msg = (CDataEncodeMsg *)hCryptMsg;
BOOL ret = FALSE;
if (msg->base.finalized)
SetLastError(CRYPT_E_MSG_ERROR);
else if (!fFinal)
{
if (msg->base.open_flags & CMSG_DETACHED_FLAG)
SetLastError(E_INVALIDARG);
else
SetLastError(CRYPT_E_MSG_ERROR);
}
else
{
msg->base.finalized = TRUE;
if (!cbData)
SetLastError(E_INVALIDARG);
else
{
CRYPT_DATA_BLOB blob = { cbData, (LPBYTE)pbData };
/* data messages don't allow non-final updates, don't bother
* checking whether data already exist, they can't.
*/
ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
&blob, CRYPT_ENCODE_ALLOC_FLAG, NULL, &msg->bare_content,
&msg->bare_content_len);
if (ret && msg->base.streamed)
FIXME("stream info unimplemented\n");
}
}
return ret;
}
static BOOL CDataEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
CDataEncodeMsg *msg = (CDataEncodeMsg *)hCryptMsg;
BOOL ret = FALSE;
switch (dwParamType)
{
case CMSG_CONTENT_PARAM:
if (msg->base.streamed)
SetLastError(E_INVALIDARG);
else
{
CRYPT_CONTENT_INFO info;
char rsa_data[] = "1.2.840.113549.1.7.1";
info.pszObjId = rsa_data;
info.Content.cbData = msg->bare_content_len;
info.Content.pbData = msg->bare_content;
ret = CryptEncodeObject(X509_ASN_ENCODING, PKCS_CONTENT_INFO, &info,
pvData, pcbData);
}
break;
case CMSG_BARE_CONTENT_PARAM:
if (msg->base.streamed)
SetLastError(E_INVALIDARG);
else if (!pvData)
{
*pcbData = msg->bare_content_len;
ret = TRUE;
}
else if (*pcbData < msg->bare_content_len)
{
*pcbData = msg->bare_content_len;
SetLastError(ERROR_MORE_DATA);
}
else
{
*pcbData = msg->bare_content_len;
memcpy(pvData, msg->bare_content, msg->bare_content_len);
ret = TRUE;
}
break;
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return ret;
}
static HCRYPTMSG CDataEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
{
CDataEncodeMsg *msg;
if (pvMsgEncodeInfo)
{
SetLastError(E_INVALIDARG);
return NULL;
}
msg = CryptMemAlloc(sizeof(CDataEncodeMsg));
if (msg)
{
CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
CDataEncodeMsg_Close, CDataEncodeMsg_GetParam, CDataEncodeMsg_Update);
msg->bare_content_len = sizeof(empty_data_content);
msg->bare_content = (LPBYTE)empty_data_content;
}
return (HCRYPTMSG)msg;
}
static inline const char *MSG_TYPE_STR(DWORD type)
{
switch (type)
{
#define _x(x) case (x): return #x
_x(CMSG_DATA);
_x(CMSG_SIGNED);
_x(CMSG_ENVELOPED);
_x(CMSG_SIGNED_AND_ENVELOPED);
_x(CMSG_HASHED);
_x(CMSG_ENCRYPTED);
#undef _x
default:
return wine_dbg_sprintf("unknown (%d)", type);
}
}
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HCRYPTMSG WINAPI CryptMsgOpenToEncode(DWORD dwMsgEncodingType, DWORD dwFlags,
DWORD dwMsgType, const void *pvMsgEncodeInfo, LPSTR pszInnerContentObjID,
PCMSG_STREAM_INFO pStreamInfo)
{
HCRYPTMSG msg = NULL;
TRACE("(%08x, %08x, %08x, %p, %s, %p)\n", dwMsgEncodingType, dwFlags,
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dwMsgType, pvMsgEncodeInfo, debugstr_a(pszInnerContentObjID), pStreamInfo);
if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
{
SetLastError(E_INVALIDARG);
return NULL;
}
switch (dwMsgType)
{
case CMSG_DATA:
msg = CDataEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
pszInnerContentObjID, pStreamInfo);
break;
case CMSG_SIGNED:
case CMSG_ENVELOPED:
case CMSG_HASHED:
FIXME("unimplemented for type %s\n", MSG_TYPE_STR(dwMsgType));
break;
case CMSG_SIGNED_AND_ENVELOPED:
case CMSG_ENCRYPTED:
/* defined but invalid, fall through */
default:
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return msg;
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}
typedef struct _CDecodeMsg
{
CryptMsgBase base;
DWORD type;
HCRYPTPROV crypt_prov;
} CDecodeMsg;
static void CDecodeMsg_Close(HCRYPTMSG hCryptMsg)
{
CDecodeMsg *msg = (CDecodeMsg *)hCryptMsg;
if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
CryptReleaseContext(msg->crypt_prov, 0);
}
static BOOL CDecodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal)
{
FIXME("(%p, %p, %d, %d): stub\n", hCryptMsg, pbData, cbData, fFinal);
return FALSE;
}
static BOOL CDecodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
CDecodeMsg *msg = (CDecodeMsg *)hCryptMsg;
BOOL ret = FALSE;
switch (dwParamType)
{
case CMSG_TYPE_PARAM:
if (!pvData)
{
*pcbData = sizeof(DWORD);
ret = TRUE;
}
else if (*pcbData < sizeof(DWORD))
{
*pcbData = sizeof(DWORD);
SetLastError(ERROR_MORE_DATA);
}
else
{
*pcbData = sizeof(DWORD);
*(DWORD *)pvData = msg->type;
ret = TRUE;
}
break;
default:
FIXME("unimplemented for parameter %d\n", dwParamType);
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
}
return ret;
}
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HCRYPTMSG WINAPI CryptMsgOpenToDecode(DWORD dwMsgEncodingType, DWORD dwFlags,
DWORD dwMsgType, HCRYPTPROV hCryptProv, PCERT_INFO pRecipientInfo,
PCMSG_STREAM_INFO pStreamInfo)
{
CDecodeMsg *msg;
TRACE("(%08x, %08x, %08x, %08lx, %p, %p)\n", dwMsgEncodingType,
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dwFlags, dwMsgType, hCryptProv, pRecipientInfo, pStreamInfo);
if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
{
SetLastError(E_INVALIDARG);
return NULL;
}
msg = CryptMemAlloc(sizeof(CDecodeMsg));
if (msg)
{
CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
CDecodeMsg_Close, CDecodeMsg_GetParam, CDecodeMsg_Update);
msg->type = dwMsgType;
}
return msg;
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}
HCRYPTMSG WINAPI CryptMsgDuplicate(HCRYPTMSG hCryptMsg)
{
TRACE("(%p)\n", hCryptMsg);
if (hCryptMsg)
{
CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
InterlockedIncrement(&msg->ref);
}
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return hCryptMsg;
}
BOOL WINAPI CryptMsgClose(HCRYPTMSG hCryptMsg)
{
TRACE("(%p)\n", hCryptMsg);
if (hCryptMsg)
{
CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
if (InterlockedDecrement(&msg->ref) == 0)
{
TRACE("freeing %p\n", msg);
if (msg->close)
msg->close(msg);
CryptMemFree(msg);
}
}
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return TRUE;
}
BOOL WINAPI CryptMsgUpdate(HCRYPTMSG hCryptMsg, const BYTE *pbData,
DWORD cbData, BOOL fFinal)
{
CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
BOOL ret = FALSE;
TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
if (msg && msg->update)
ret = msg->update(hCryptMsg, pbData, cbData, fFinal);
return ret;
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}
BOOL WINAPI CryptMsgGetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
DWORD dwIndex, void *pvData, DWORD *pcbData)
{
CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
BOOL ret = FALSE;
TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
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pvData, pcbData);
if (msg && msg->get_param)
ret = msg->get_param(hCryptMsg, dwParamType, dwIndex, pvData, pcbData);
return ret;
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}