reactos/dll/win32/msisip/main.c

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/*
* Copyright 2008 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 "config.h"
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
#include "mssip.h"
#define COBJMACROS
#include "objbase.h"
#include "initguid.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(msisip);
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);
switch (fdwReason)
{
case DLL_WINE_PREATTACH:
return FALSE; /* prefer native version */
case DLL_PROCESS_ATTACH:
DisableThreadLibraryCalls(hinstDLL);
break;
}
return TRUE;
}
static GUID mySubject = { 0x000c10f1, 0x0000, 0x0000,
{ 0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46 }};
/***********************************************************************
* DllRegisterServer (MSISIP.@)
*/
HRESULT WINAPI DllRegisterServer(void)
{
static WCHAR msisip[] = { 'M','S','I','S','I','P','.','D','L','L',0 };
static WCHAR getSignedDataMsg[] = { 'M','s','i','S','I','P','G','e','t',
'S','i','g','n','e','d','D','a','t','a','M','s','g',0 };
static WCHAR putSignedDataMsg[] = { 'M','s','i','S','I','P','P','u','t',
'S','i','g','n','e','d','D','a','t','a','M','s','g',0 };
static WCHAR createIndirectData[] = { 'M','s','i','S','I','P',
'C','r','e','a','t','e','I','n','d','i','r','e','c','t','D','a','t','a',
0 };
static WCHAR verifyIndirectData[] = { 'M','s','i','S','I','P',
'V','e','r','i','f','y','I','n','d','i','r','e','c','t','D','a','t','a',
0 };
static WCHAR removeSignedDataMsg[] = { 'M','s','i','S','I','P','R','e','m',
'o','v','e','S','i','g','n','e','d','D','a','t','a','M','s','g', 0 };
static WCHAR isMyTypeOfFile[] = { 'M','s','i','S','I','P',
'I','s','M','y','T','y','p','e','O','f','F','i','l','e',0 };
SIP_ADD_NEWPROVIDER prov;
memset(&prov, 0, sizeof(prov));
prov.cbStruct = sizeof(prov);
prov.pwszDLLFileName = msisip;
prov.pgSubject = &mySubject;
prov.pwszGetFuncName = getSignedDataMsg;
prov.pwszPutFuncName = putSignedDataMsg;
prov.pwszCreateFuncName = createIndirectData;
prov.pwszVerifyFuncName = verifyIndirectData;
prov.pwszRemoveFuncName = removeSignedDataMsg;
prov.pwszIsFunctionNameFmt2 = isMyTypeOfFile;
prov.pwszGetCapFuncName = NULL;
return CryptSIPAddProvider(&prov) ? S_OK : S_FALSE;
}
/***********************************************************************
* DllUnregisterServer (MSISIP.@)
*/
HRESULT WINAPI DllUnregisterServer(void)
{
CryptSIPRemoveProvider(&mySubject);
return S_OK;
}
/***********************************************************************
* MsiSIPGetSignedDataMsg (MSISIP.@)
*/
BOOL WINAPI MsiSIPGetSignedDataMsg(SIP_SUBJECTINFO *pSubjectInfo,
DWORD *pdwEncodingType, DWORD dwIndex, DWORD *pcbSignedDataMsg,
BYTE *pbSignedDataMsg)
{
static const WCHAR digitalSig[] = { 5,'D','i','g','i','t','a','l',
'S','i','g','n','a','t','u','r','e',0 };
BOOL ret = FALSE;
IStorage *stg = NULL;
HRESULT r;
IStream *stm = NULL;
BYTE hdr[2], len[sizeof(DWORD)];
DWORD count, lenBytes, dataBytes;
TRACE("(%p %p %d %p %p)\n", pSubjectInfo, pdwEncodingType, dwIndex,
pcbSignedDataMsg, pbSignedDataMsg);
r = StgOpenStorage(pSubjectInfo->pwsFileName, NULL,
STGM_DIRECT|STGM_READ|STGM_SHARE_DENY_WRITE, NULL, 0, &stg);
if (FAILED(r))
{
TRACE("couldn't open %s\n", debugstr_w(pSubjectInfo->pwsFileName));
goto end;
}
r = IStorage_OpenStream(stg, digitalSig, 0,
STGM_READ|STGM_SHARE_EXCLUSIVE, 0, &stm);
if (FAILED(r))
{
TRACE("couldn't find digital signature stream\n");
goto freestorage;
}
r = IStream_Read(stm, hdr, sizeof(hdr), &count);
if (FAILED(r) || count != sizeof(hdr))
goto freestream;
if (hdr[0] != 0x30)
{
WARN("unexpected data in digital sig: 0x%02x%02x\n", hdr[0], hdr[1]);
goto freestream;
}
/* Read the asn.1 length from the stream. Only supports definite-length
* values, which DER-encoded signatures should be.
*/
if (hdr[1] == 0x80)
{
WARN("indefinite-length encoding not supported!\n");
goto freestream;
}
else if (hdr[1] & 0x80)
{
DWORD temp;
LPBYTE ptr;
lenBytes = hdr[1] & 0x7f;
if (lenBytes > sizeof(DWORD))
{
WARN("asn.1 length too long (%d)\n", lenBytes);
goto freestream;
}
r = IStream_Read(stm, len, lenBytes, &count);
if (FAILED(r) || count != lenBytes)
goto freestream;
dataBytes = 0;
temp = lenBytes;
ptr = len;
while (temp--)
{
dataBytes <<= 8;
dataBytes |= *ptr++;
}
}
else
{
lenBytes = 0;
dataBytes = hdr[1];
}
if (!pbSignedDataMsg)
{
*pcbSignedDataMsg = 2 + lenBytes + dataBytes;
ret = TRUE;
}
else if (*pcbSignedDataMsg < 2 + lenBytes + dataBytes)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
*pcbSignedDataMsg = 2 + lenBytes + dataBytes;
}
else
{
LPBYTE ptr = pbSignedDataMsg;
memcpy(ptr, hdr, sizeof(hdr));
ptr += sizeof(hdr);
if (lenBytes)
{
memcpy(ptr, len, lenBytes);
ptr += lenBytes;
}
r = IStream_Read(stm, ptr, dataBytes, &count);
if (SUCCEEDED(r) && count == dataBytes)
{
*pdwEncodingType = X509_ASN_ENCODING | PKCS_7_ASN_ENCODING;
*pcbSignedDataMsg = 2 + lenBytes + dataBytes;
ret = TRUE;
}
}
freestream:
IStream_Release(stm);
freestorage:
IStorage_Release(stg);
end:
TRACE("returning %d\n", ret);
return ret;
}
DEFINE_GUID(CLSID_MsiTransform, 0x000c1082,0x0000,0x0000,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
DEFINE_GUID(CLSID_MsiDatabase, 0x000c1084,0x0000,0x0000,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
DEFINE_GUID(CLSID_MsiPatch, 0x000c1086,0x0000,0x0000,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
/***********************************************************************
* MsiSIPIsMyTypeOfFile (MSISIP.@)
*/
BOOL WINAPI MsiSIPIsMyTypeOfFile(WCHAR *name, GUID *subject)
{
BOOL ret = FALSE;
IStorage *stg = NULL;
HRESULT r;
TRACE("(%s, %p)\n", debugstr_w(name), subject);
r = StgOpenStorage(name, NULL, STGM_DIRECT|STGM_READ|STGM_SHARE_DENY_WRITE,
NULL, 0, &stg);
if (SUCCEEDED(r))
{
STATSTG stat;
r = IStorage_Stat(stg, &stat, STATFLAG_NONAME);
if (SUCCEEDED(r))
{
if (IsEqualGUID(&stat.clsid, &CLSID_MsiDatabase) ||
IsEqualGUID(&stat.clsid, &CLSID_MsiPatch) ||
IsEqualGUID(&stat.clsid, &CLSID_MsiTransform))
{
ret = TRUE;
*subject = mySubject;
}
}
IStorage_Release(stg);
}
return ret;
}