741 lines
22 KiB
C
741 lines
22 KiB
C
/*
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* Copyright 2007 Juan Lang
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wincrypt.h"
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#include "snmp.h"
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#include "wine/debug.h"
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#include "wine/exception.h"
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#include "crypt32_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(crypt);
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/* Called when a message's ref count reaches zero. Free any message-specific
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* data here.
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*/
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typedef void (*CryptMsgCloseFunc)(HCRYPTMSG msg);
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typedef BOOL (*CryptMsgGetParamFunc)(HCRYPTMSG hCryptMsg, DWORD dwParamType,
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DWORD dwIndex, void *pvData, DWORD *pcbData);
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typedef BOOL (*CryptMsgUpdateFunc)(HCRYPTMSG hCryptMsg, const BYTE *pbData,
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DWORD cbData, BOOL fFinal);
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typedef enum _CryptMsgState {
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MsgStateInit,
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MsgStateUpdated,
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MsgStateFinalized
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} CryptMsgState;
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typedef struct _CryptMsgBase
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{
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LONG ref;
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DWORD open_flags;
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BOOL streamed;
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CMSG_STREAM_INFO stream_info;
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CryptMsgState state;
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CryptMsgCloseFunc close;
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CryptMsgUpdateFunc update;
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CryptMsgGetParamFunc get_param;
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} CryptMsgBase;
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static inline void CryptMsgBase_Init(CryptMsgBase *msg, DWORD dwFlags,
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PCMSG_STREAM_INFO pStreamInfo, CryptMsgCloseFunc close,
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CryptMsgGetParamFunc get_param, CryptMsgUpdateFunc update)
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{
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msg->ref = 1;
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msg->open_flags = dwFlags;
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if (pStreamInfo)
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{
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msg->streamed = TRUE;
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memcpy(&msg->stream_info, pStreamInfo, sizeof(msg->stream_info));
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}
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else
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{
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msg->streamed = FALSE;
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memset(&msg->stream_info, 0, sizeof(msg->stream_info));
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}
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msg->close = close;
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msg->get_param = get_param;
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msg->update = update;
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msg->state = MsgStateInit;
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}
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typedef struct _CDataEncodeMsg
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{
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CryptMsgBase base;
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DWORD bare_content_len;
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LPBYTE bare_content;
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} CDataEncodeMsg;
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static const BYTE empty_data_content[] = { 0x04,0x00 };
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static void CDataEncodeMsg_Close(HCRYPTMSG hCryptMsg)
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{
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CDataEncodeMsg *msg = (CDataEncodeMsg *)hCryptMsg;
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if (msg->bare_content != empty_data_content)
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LocalFree(msg->bare_content);
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}
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static WINAPI BOOL CRYPT_EncodeContentLength(DWORD dwCertEncodingType,
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LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
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PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
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{
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const CDataEncodeMsg *msg = (const CDataEncodeMsg *)pvStructInfo;
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DWORD lenBytes;
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BOOL ret = TRUE;
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/* Trick: report bytes needed based on total message length, even though
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* the message isn't available yet. The caller will use the length
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* reported here to encode its length.
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*/
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CRYPT_EncodeLen(msg->base.stream_info.cbContent, NULL, &lenBytes);
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if (!pbEncoded)
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*pcbEncoded = 1 + lenBytes + msg->base.stream_info.cbContent;
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else
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{
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if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
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pcbEncoded, 1 + lenBytes)))
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{
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if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
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pbEncoded = *(BYTE **)pbEncoded;
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*pbEncoded++ = ASN_OCTETSTRING;
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CRYPT_EncodeLen(msg->base.stream_info.cbContent, pbEncoded,
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&lenBytes);
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}
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}
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return ret;
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}
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static BOOL CRYPT_EncodeDataContentInfoHeader(CDataEncodeMsg *msg,
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CRYPT_DATA_BLOB *header)
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{
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BOOL ret;
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if (msg->base.streamed && msg->base.stream_info.cbContent == 0xffffffff)
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{
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FIXME("unimplemented for indefinite-length encoding\n");
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header->cbData = 0;
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header->pbData = NULL;
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ret = TRUE;
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}
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else
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{
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struct AsnConstructedItem constructed = { 0, msg,
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CRYPT_EncodeContentLength };
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struct AsnEncodeSequenceItem items[2] = {
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{ szOID_RSA_data, CRYPT_AsnEncodeOid, 0 },
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{ &constructed, CRYPT_AsnEncodeConstructed, 0 },
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};
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ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items,
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sizeof(items) / sizeof(items[0]), CRYPT_ENCODE_ALLOC_FLAG, NULL,
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(LPBYTE)&header->pbData, &header->cbData);
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if (ret)
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{
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/* Trick: subtract the content length from the reported length,
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* as the actual content hasn't come yet.
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*/
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header->cbData -= msg->base.stream_info.cbContent;
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}
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}
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return ret;
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}
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static BOOL CDataEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
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DWORD cbData, BOOL fFinal)
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{
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CDataEncodeMsg *msg = (CDataEncodeMsg *)hCryptMsg;
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BOOL ret = FALSE;
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if (msg->base.streamed)
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{
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__TRY
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{
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if (msg->base.state != MsgStateUpdated)
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{
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CRYPT_DATA_BLOB header;
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ret = CRYPT_EncodeDataContentInfoHeader(msg, &header);
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if (ret)
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{
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ret = msg->base.stream_info.pfnStreamOutput(
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msg->base.stream_info.pvArg, header.pbData, header.cbData,
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FALSE);
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LocalFree(header.pbData);
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}
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}
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if (!fFinal)
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ret = msg->base.stream_info.pfnStreamOutput(
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msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
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FALSE);
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else
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{
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if (msg->base.stream_info.cbContent == 0xffffffff)
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{
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BYTE indefinite_trailer[6] = { 0 };
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ret = msg->base.stream_info.pfnStreamOutput(
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msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
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FALSE);
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if (ret)
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ret = msg->base.stream_info.pfnStreamOutput(
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msg->base.stream_info.pvArg, indefinite_trailer,
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sizeof(indefinite_trailer), TRUE);
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}
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else
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ret = msg->base.stream_info.pfnStreamOutput(
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msg->base.stream_info.pvArg, (BYTE *)pbData, cbData, TRUE);
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}
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}
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__EXCEPT_PAGE_FAULT
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{
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SetLastError(STATUS_ACCESS_VIOLATION);
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}
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__ENDTRY;
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}
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else
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{
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if (!fFinal)
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{
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if (msg->base.open_flags & CMSG_DETACHED_FLAG)
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SetLastError(E_INVALIDARG);
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else
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SetLastError(CRYPT_E_MSG_ERROR);
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}
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else
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{
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if (!cbData)
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SetLastError(E_INVALIDARG);
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else
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{
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CRYPT_DATA_BLOB blob = { cbData, (LPBYTE)pbData };
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/* non-streamed data messages don't allow non-final updates,
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* don't bother checking whether data already exist, they can't.
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*/
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ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
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&blob, CRYPT_ENCODE_ALLOC_FLAG, NULL, &msg->bare_content,
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&msg->bare_content_len);
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}
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}
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}
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return ret;
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}
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static BOOL CRYPT_CopyParam(void *pvData, DWORD *pcbData, const BYTE *src,
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DWORD len)
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{
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BOOL ret = TRUE;
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if (!pvData)
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*pcbData = len;
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else if (*pcbData < len)
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{
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*pcbData = len;
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SetLastError(ERROR_MORE_DATA);
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ret = FALSE;
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}
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else
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{
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*pcbData = len;
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memcpy(pvData, src, len);
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}
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return ret;
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}
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static BOOL CDataEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
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DWORD dwIndex, void *pvData, DWORD *pcbData)
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{
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CDataEncodeMsg *msg = (CDataEncodeMsg *)hCryptMsg;
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BOOL ret = FALSE;
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switch (dwParamType)
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{
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case CMSG_CONTENT_PARAM:
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if (msg->base.streamed)
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SetLastError(E_INVALIDARG);
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else
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{
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CRYPT_CONTENT_INFO info;
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char rsa_data[] = "1.2.840.113549.1.7.1";
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info.pszObjId = rsa_data;
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info.Content.cbData = msg->bare_content_len;
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info.Content.pbData = msg->bare_content;
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ret = CryptEncodeObject(X509_ASN_ENCODING, PKCS_CONTENT_INFO, &info,
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pvData, pcbData);
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}
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break;
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case CMSG_BARE_CONTENT_PARAM:
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if (msg->base.streamed)
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SetLastError(E_INVALIDARG);
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else
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ret = CRYPT_CopyParam(pvData, pcbData, msg->bare_content,
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msg->bare_content_len);
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break;
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default:
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SetLastError(CRYPT_E_INVALID_MSG_TYPE);
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}
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return ret;
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}
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static HCRYPTMSG CDataEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
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LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
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{
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CDataEncodeMsg *msg;
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if (pvMsgEncodeInfo)
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{
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SetLastError(E_INVALIDARG);
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return NULL;
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}
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msg = CryptMemAlloc(sizeof(CDataEncodeMsg));
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if (msg)
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{
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CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
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CDataEncodeMsg_Close, CDataEncodeMsg_GetParam, CDataEncodeMsg_Update);
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msg->bare_content_len = sizeof(empty_data_content);
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msg->bare_content = (LPBYTE)empty_data_content;
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}
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return (HCRYPTMSG)msg;
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}
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typedef struct _CHashEncodeMsg
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{
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CryptMsgBase base;
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HCRYPTPROV prov;
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HCRYPTHASH hash;
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CRYPT_DATA_BLOB data;
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} CHashEncodeMsg;
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static void CHashEncodeMsg_Close(HCRYPTMSG hCryptMsg)
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{
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CHashEncodeMsg *msg = (CHashEncodeMsg *)hCryptMsg;
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CryptMemFree(msg->data.pbData);
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CryptDestroyHash(msg->hash);
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if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
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CryptReleaseContext(msg->prov, 0);
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}
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static BOOL CRYPT_EncodePKCSDigestedData(CHashEncodeMsg *msg, void *pvData,
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DWORD *pcbData)
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{
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BOOL ret;
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ALG_ID algID;
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DWORD size = sizeof(algID);
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ret = CryptGetHashParam(msg->hash, HP_ALGID, (BYTE *)&algID, &size, 0);
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if (ret)
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{
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CRYPT_ALGORITHM_IDENTIFIER algoId = { 0 };
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DWORD version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
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struct AsnEncodeSequenceItem items[7] = { { 0 } };
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DWORD cItem = 0;
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CRYPT_DATA_BLOB hash = { 0, NULL };
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CRYPT_CONTENT_INFO contentInfo = { NULL, { 0, NULL } };
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char oid_rsa_data[] = szOID_RSA_data;
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items[cItem].pvStructInfo = &version;
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items[cItem].encodeFunc = CRYPT_AsnEncodeInt;
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cItem++;
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algoId.pszObjId = (LPSTR)CertAlgIdToOID(algID);
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/* FIXME: what about algoId.Parameters? */
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items[cItem].pvStructInfo = &algoId;
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items[cItem].encodeFunc = CRYPT_AsnEncodeAlgorithmIdWithNullParams;
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cItem++;
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/* Quirk: OID is only encoded messages if an update has happened */
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if (msg->base.state != MsgStateInit)
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contentInfo.pszObjId = oid_rsa_data;
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if (!(msg->base.open_flags & CMSG_DETACHED_FLAG) && msg->data.cbData)
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{
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ret = CRYPT_AsnEncodeOctets(0, NULL, &msg->data,
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CRYPT_ENCODE_ALLOC_FLAG, NULL,
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(LPBYTE)&contentInfo.Content.pbData,
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&contentInfo.Content.cbData);
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}
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items[cItem].pvStructInfo = &contentInfo;
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items[cItem].encodeFunc =
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CRYPT_AsnEncodePKCSContentInfoInternal;
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cItem++;
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if (msg->base.state == MsgStateFinalized)
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{
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size = sizeof(DWORD);
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ret = CryptGetHashParam(msg->hash, HP_HASHSIZE,
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(LPBYTE)&hash.cbData, &size, 0);
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if (ret)
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{
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hash.pbData = CryptMemAlloc(hash.cbData);
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ret = CryptGetHashParam(msg->hash, HP_HASHVAL, hash.pbData,
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&hash.cbData, 0);
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}
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}
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items[cItem].pvStructInfo = &hash;
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items[cItem].encodeFunc = CRYPT_AsnEncodeOctets;
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cItem++;
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if (ret)
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ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items, cItem,
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0, NULL, pvData, pcbData);
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CryptMemFree(hash.pbData);
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LocalFree(contentInfo.Content.pbData);
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}
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return ret;
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}
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static BOOL CHashEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
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DWORD dwIndex, void *pvData, DWORD *pcbData)
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{
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CHashEncodeMsg *msg = (CHashEncodeMsg *)hCryptMsg;
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BOOL ret = FALSE;
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TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
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pvData, pcbData);
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switch (dwParamType)
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{
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case CMSG_BARE_CONTENT_PARAM:
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if (msg->base.streamed)
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SetLastError(E_INVALIDARG);
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else
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ret = CRYPT_EncodePKCSDigestedData(msg, pvData, pcbData);
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break;
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case CMSG_CONTENT_PARAM:
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{
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CRYPT_CONTENT_INFO info;
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ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
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&info.Content.cbData);
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if (ret)
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{
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info.Content.pbData = CryptMemAlloc(info.Content.cbData);
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if (info.Content.pbData)
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{
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ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
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info.Content.pbData, &info.Content.cbData);
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if (ret)
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{
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char oid_rsa_hashed[] = szOID_RSA_hashedData;
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info.pszObjId = oid_rsa_hashed;
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ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
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PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
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}
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CryptMemFree(info.Content.pbData);
|
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}
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else
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ret = FALSE;
|
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}
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break;
|
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}
|
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case CMSG_COMPUTED_HASH_PARAM:
|
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ret = CryptGetHashParam(msg->hash, HP_HASHVAL, (BYTE *)pvData, pcbData,
|
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0);
|
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break;
|
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case CMSG_VERSION_PARAM:
|
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if (msg->base.state != MsgStateFinalized)
|
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SetLastError(CRYPT_E_MSG_ERROR);
|
|
else
|
|
{
|
|
DWORD version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
|
|
|
|
/* Since the data are always encoded as octets, the version is
|
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* always 0 (see rfc3852, section 7)
|
|
*/
|
|
ret = CRYPT_CopyParam(pvData, pcbData, (const BYTE *)&version,
|
|
sizeof(version));
|
|
}
|
|
break;
|
|
default:
|
|
ret = FALSE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static BOOL CHashEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
|
|
DWORD cbData, BOOL fFinal)
|
|
{
|
|
CHashEncodeMsg *msg = (CHashEncodeMsg *)hCryptMsg;
|
|
BOOL ret = FALSE;
|
|
|
|
TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
|
|
|
|
if (msg->base.streamed || (msg->base.open_flags & CMSG_DETACHED_FLAG))
|
|
{
|
|
/* Doesn't do much, as stream output is never called, and you
|
|
* can't get the content.
|
|
*/
|
|
ret = CryptHashData(msg->hash, pbData, cbData, 0);
|
|
}
|
|
else
|
|
{
|
|
if (!fFinal)
|
|
SetLastError(CRYPT_E_MSG_ERROR);
|
|
else
|
|
{
|
|
ret = CryptHashData(msg->hash, pbData, cbData, 0);
|
|
if (ret)
|
|
{
|
|
msg->data.pbData = CryptMemAlloc(cbData);
|
|
if (msg->data.pbData)
|
|
{
|
|
memcpy(msg->data.pbData + msg->data.cbData, pbData, cbData);
|
|
msg->data.cbData += cbData;
|
|
}
|
|
else
|
|
ret = FALSE;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static HCRYPTMSG CHashEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
|
|
LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
|
|
{
|
|
CHashEncodeMsg *msg;
|
|
const CMSG_HASHED_ENCODE_INFO *info =
|
|
(const CMSG_HASHED_ENCODE_INFO *)pvMsgEncodeInfo;
|
|
HCRYPTPROV prov;
|
|
ALG_ID algID;
|
|
|
|
if (info->cbSize != sizeof(CMSG_HASHED_ENCODE_INFO))
|
|
{
|
|
SetLastError(E_INVALIDARG);
|
|
return NULL;
|
|
}
|
|
if (!(algID = CertOIDToAlgId(info->HashAlgorithm.pszObjId)))
|
|
{
|
|
SetLastError(CRYPT_E_UNKNOWN_ALGO);
|
|
return NULL;
|
|
}
|
|
if (info->hCryptProv)
|
|
prov = info->hCryptProv;
|
|
else
|
|
{
|
|
prov = CRYPT_GetDefaultProvider();
|
|
dwFlags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
|
|
}
|
|
msg = CryptMemAlloc(sizeof(CHashEncodeMsg));
|
|
if (msg)
|
|
{
|
|
CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
|
|
CHashEncodeMsg_Close, CHashEncodeMsg_GetParam, CHashEncodeMsg_Update);
|
|
msg->prov = prov;
|
|
msg->data.cbData = 0;
|
|
msg->data.pbData = NULL;
|
|
if (!CryptCreateHash(prov, algID, 0, 0, &msg->hash))
|
|
{
|
|
CryptMsgClose(msg);
|
|
msg = NULL;
|
|
}
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
|
|
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,
|
|
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_HASHED:
|
|
msg = CHashEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
|
|
pszInnerContentObjID, pStreamInfo);
|
|
break;
|
|
case CMSG_SIGNED:
|
|
case CMSG_ENVELOPED:
|
|
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;
|
|
}
|
|
|
|
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:
|
|
ret = CRYPT_CopyParam(pvData, pcbData, (const BYTE *)&msg->type,
|
|
sizeof(msg->type));
|
|
break;
|
|
default:
|
|
FIXME("unimplemented for parameter %d\n", dwParamType);
|
|
SetLastError(CRYPT_E_INVALID_MSG_TYPE);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
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,
|
|
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;
|
|
if (hCryptProv)
|
|
msg->crypt_prov = hCryptProv;
|
|
else
|
|
{
|
|
msg->crypt_prov = CRYPT_GetDefaultProvider();
|
|
msg->base.open_flags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
|
|
}
|
|
}
|
|
return msg;
|
|
}
|
|
|
|
HCRYPTMSG WINAPI CryptMsgDuplicate(HCRYPTMSG hCryptMsg)
|
|
{
|
|
TRACE("(%p)\n", hCryptMsg);
|
|
|
|
if (hCryptMsg)
|
|
{
|
|
CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
|
|
|
|
InterlockedIncrement(&msg->ref);
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
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->state == MsgStateFinalized)
|
|
SetLastError(CRYPT_E_MSG_ERROR);
|
|
else
|
|
{
|
|
ret = msg->update(hCryptMsg, pbData, cbData, fFinal);
|
|
msg->state = MsgStateUpdated;
|
|
if (fFinal)
|
|
msg->state = MsgStateFinalized;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
BOOL WINAPI CryptMsgGetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
|
|
DWORD dwIndex, void *pvData, DWORD *pcbData)
|
|
{
|
|
CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
|
|
|
|
TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
|
|
pvData, pcbData);
|
|
return msg->get_param(hCryptMsg, dwParamType, dwIndex, pvData, pcbData);
|
|
}
|