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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: GetProcessId.cpp,v $
* $Revision: 1.5 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "macros.h"
#include "win95sys.h"
#include <tlhelp32.h>
static FARPROC WINAPI GetRealProcAddress( HMODULE hModule, LPCSTR lpProcName )
{
FARPROC lpfn = GetProcAddress( hModule, lpProcName );
if ( lpfn )
{
if ( 0x68 == *(LPBYTE)lpfn )
{
/*
82C9F460 68 36 49 F8 BF push 0BFF84936h
82C9F465 E9 41 62 2F 3D jmp BFF956AB
*/
lpfn = (FARPROC)*(LPDWORD)((LPBYTE)lpfn + 1);
/*
BFF956AB 9C pushfd
BFF956AC FC cld
BFF956AD 50 push eax
BFF956AE 53 push ebx
BFF956AF 52 push edx
BFF956B0 64 8B 15 20 00 00 00 mov edx,dword ptr fs:[20h]
BFF956B7 0B D2 or edx,edx
BFF956B9 74 09 je BFF956C4
BFF956BB 8B 42 04 mov eax,dword ptr [edx+4]
BFF956BE 0B C0 or eax,eax
BFF956C0 74 07 je BFF956C9
BFF956C2 EB 42 jmp BFF95706
BFF956C4 5A pop edx
BFF956C5 5B pop ebx
BFF956C6 58 pop eax
BFF956C7 9D popfd
BFF956C8 C3 ret
*/
}
}
return lpfn;
}
typedef DWORD (WINAPI OBFUSCATE)( DWORD dwPTID );
typedef OBFUSCATE *LPOBFUSCATE;
static DWORD WINAPI Obfuscate( DWORD dwPTID )
{
static LPOBFUSCATE lpfnObfuscate = NULL;
if ( !lpfnObfuscate )
{
LPBYTE lpCode = (LPBYTE)GetRealProcAddress( GetModuleHandleA("KERNEL32"), "GetCurrentThreadId" );
if ( lpCode )
{
/*
GetCurrentThreadId:
lpCode + 00 BFF84936 A1 DC 9C FC BF mov eax,[BFFC9CDC] ; This is the real thread id
lpcode + 05 BFF8493B FF 30 push dword ptr [eax]
lpCode + 07 BFF8493D E8 17 C5 FF FF call BFF80E59 ; call Obfuscate function
lpcode + 0C BFF84942 C3 ret
*/
DWORD dwOffset = *(LPDWORD)(lpCode + 0x08);
lpfnObfuscate = (LPOBFUSCATE)(lpCode + 0x0C + dwOffset);
/*
Obfuscate:
BFF80E59 A1 CC 98 FC BF mov eax,[BFFC98CC]
BFF80E5E 85 C0 test eax,eax
BFF80E60 75 04 jne BFF80E66
BFF80E62 33 C0 xor eax,eax
BFF80E64 EB 04 jmp BFF80E6A
BFF80E66 33 44 24 04 xor eax,dword ptr [esp+4]
BFF80E6A C2 04 00 ret 4
*/
}
}
return lpfnObfuscate ? lpfnObfuscate( dwPTID ) : 0;
}
EXTERN_C DWORD WINAPI GetProcessId_WINDOWS( HANDLE hProcess )
{
if ( GetCurrentProcess() == hProcess )
return GetCurrentProcessId();
DWORD dwProcessId = 0;
PPROCESS_DATABASE pPDB = (PPROCESS_DATABASE)Obfuscate( GetCurrentProcessId() );
if ( pPDB && K32OBJ_PROCESS == pPDB->Type )
{
DWORD dwHandleNumber = (DWORD)hProcess >> 2;
if ( 0 == ((DWORD)hProcess & 0x03) && dwHandleNumber < pPDB->pHandleTable->cEntries )
{
if (
pPDB->pHandleTable->array[dwHandleNumber].pObject &&
K32OBJ_PROCESS == pPDB->pHandleTable->array[dwHandleNumber].pObject->Type
)
dwProcessId = Obfuscate( (DWORD)pPDB->pHandleTable->array[dwHandleNumber].pObject );
}
SetLastError( ERROR_INVALID_HANDLE );
}
return dwProcessId;
}
EXTERN_C DWORD WINAPI GetProcessId_NT( HANDLE hProcess )
{
SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
return 0;
}
EXTERN_C void WINAPI ResolveThunk_GetProcessId( FARPROC *lppfn, LPCSTR lpLibFileName, LPCSTR lpFuncName )
{
if ( (LONG)GetVersion() < 0 )
*lppfn = (FARPROC)GetProcessId_WINDOWS;
else
{
FARPROC lpfnResult = GetProcAddress( LoadLibraryA( lpLibFileName ), lpFuncName );
if ( !lpfnResult )
lpfnResult = (FARPROC)GetProcessId_NT;
*lppfn = lpfnResult;
}
}
DEFINE_CUSTOM_THUNK( kernel32, GetProcessId, DWORD, WINAPI, GetProcessId, ( HANDLE hProcess ) );
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