382 lines
10 KiB
C
382 lines
10 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 "wine/debug.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 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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BOOL finalized;
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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->finalized = FALSE;
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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 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.finalized)
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SetLastError(CRYPT_E_MSG_ERROR);
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else 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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msg->base.finalized = TRUE;
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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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/* data messages don't allow non-final updates, don't bother
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* 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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if (ret && msg->base.streamed)
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FIXME("stream info unimplemented\n");
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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_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 if (!pvData)
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{
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*pcbData = msg->bare_content_len;
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ret = TRUE;
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}
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else if (*pcbData < msg->bare_content_len)
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{
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*pcbData = msg->bare_content_len;
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SetLastError(ERROR_MORE_DATA);
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}
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else
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{
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*pcbData = msg->bare_content_len;
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memcpy(pvData, msg->bare_content, msg->bare_content_len);
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ret = TRUE;
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}
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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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static inline const char *MSG_TYPE_STR(DWORD type)
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{
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switch (type)
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{
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#define _x(x) case (x): return #x
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_x(CMSG_DATA);
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_x(CMSG_SIGNED);
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_x(CMSG_ENVELOPED);
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_x(CMSG_SIGNED_AND_ENVELOPED);
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_x(CMSG_HASHED);
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_x(CMSG_ENCRYPTED);
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#undef _x
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default:
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return wine_dbg_sprintf("unknown (%d)", type);
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}
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}
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HCRYPTMSG WINAPI CryptMsgOpenToEncode(DWORD dwMsgEncodingType, DWORD dwFlags,
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DWORD dwMsgType, const void *pvMsgEncodeInfo, LPSTR pszInnerContentObjID,
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PCMSG_STREAM_INFO pStreamInfo)
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{
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HCRYPTMSG msg = NULL;
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TRACE("(%08x, %08x, %08x, %p, %s, %p)\n", dwMsgEncodingType, dwFlags,
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dwMsgType, pvMsgEncodeInfo, debugstr_a(pszInnerContentObjID), pStreamInfo);
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if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
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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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switch (dwMsgType)
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{
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case CMSG_DATA:
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msg = CDataEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
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pszInnerContentObjID, pStreamInfo);
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break;
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case CMSG_SIGNED:
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case CMSG_ENVELOPED:
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case CMSG_HASHED:
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FIXME("unimplemented for type %s\n", MSG_TYPE_STR(dwMsgType));
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break;
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case CMSG_SIGNED_AND_ENVELOPED:
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case CMSG_ENCRYPTED:
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/* defined but invalid, fall through */
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default:
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SetLastError(CRYPT_E_INVALID_MSG_TYPE);
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}
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return msg;
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}
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typedef struct _CDecodeMsg
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{
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CryptMsgBase base;
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DWORD type;
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HCRYPTPROV crypt_prov;
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} CDecodeMsg;
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static void CDecodeMsg_Close(HCRYPTMSG hCryptMsg)
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{
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CDecodeMsg *msg = (CDecodeMsg *)hCryptMsg;
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if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
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CryptReleaseContext(msg->crypt_prov, 0);
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}
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static BOOL CDecodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
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DWORD cbData, BOOL fFinal)
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{
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FIXME("(%p, %p, %d, %d): stub\n", hCryptMsg, pbData, cbData, fFinal);
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return FALSE;
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}
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static BOOL CDecodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
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DWORD dwIndex, void *pvData, DWORD *pcbData)
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{
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CDecodeMsg *msg = (CDecodeMsg *)hCryptMsg;
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BOOL ret = FALSE;
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switch (dwParamType)
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{
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case CMSG_TYPE_PARAM:
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if (!pvData)
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{
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*pcbData = sizeof(DWORD);
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ret = TRUE;
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}
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else if (*pcbData < sizeof(DWORD))
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{
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*pcbData = sizeof(DWORD);
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SetLastError(ERROR_MORE_DATA);
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}
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else
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{
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*pcbData = sizeof(DWORD);
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*(DWORD *)pvData = msg->type;
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ret = TRUE;
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}
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break;
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default:
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FIXME("unimplemented for parameter %d\n", dwParamType);
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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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HCRYPTMSG WINAPI CryptMsgOpenToDecode(DWORD dwMsgEncodingType, DWORD dwFlags,
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DWORD dwMsgType, HCRYPTPROV hCryptProv, PCERT_INFO pRecipientInfo,
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PCMSG_STREAM_INFO pStreamInfo)
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{
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CDecodeMsg *msg;
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TRACE("(%08x, %08x, %08x, %08lx, %p, %p)\n", dwMsgEncodingType,
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dwFlags, dwMsgType, hCryptProv, pRecipientInfo, pStreamInfo);
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if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
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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(CDecodeMsg));
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if (msg)
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{
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CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
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CDecodeMsg_Close, CDecodeMsg_GetParam, CDecodeMsg_Update);
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msg->type = dwMsgType;
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}
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return msg;
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}
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HCRYPTMSG WINAPI CryptMsgDuplicate(HCRYPTMSG hCryptMsg)
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{
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TRACE("(%p)\n", hCryptMsg);
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if (hCryptMsg)
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{
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CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
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InterlockedIncrement(&msg->ref);
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}
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return hCryptMsg;
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}
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BOOL WINAPI CryptMsgClose(HCRYPTMSG hCryptMsg)
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{
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TRACE("(%p)\n", hCryptMsg);
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if (hCryptMsg)
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{
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CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
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if (InterlockedDecrement(&msg->ref) == 0)
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{
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TRACE("freeing %p\n", msg);
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if (msg->close)
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msg->close(msg);
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CryptMemFree(msg);
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}
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}
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return TRUE;
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}
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BOOL WINAPI CryptMsgUpdate(HCRYPTMSG hCryptMsg, const BYTE *pbData,
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DWORD cbData, BOOL fFinal)
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{
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CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
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BOOL ret = FALSE;
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TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
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if (msg && msg->update)
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ret = msg->update(hCryptMsg, pbData, cbData, fFinal);
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return ret;
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}
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BOOL WINAPI CryptMsgGetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
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DWORD dwIndex, void *pvData, DWORD *pcbData)
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{
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CryptMsgBase *msg = (CryptMsgBase *)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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if (msg && msg->get_param)
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ret = msg->get_param(hCryptMsg, dwParamType, dwIndex, pvData, pcbData);
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return ret;
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}
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