setup_native/source/win32/customactions/tools/checkversion.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #define WIN32_LEAN_AND_MEAN
  21 #include <windows.h>
  22 #include <msiquery.h>
  23
  24 #include <cassert>
  25 #include <string.h>
  26 #include <malloc.h>
  27 #include <stdio.h>
  28 #include <strsafe.h>
  29
  30 #include "seterror.hxx"
  31
  32
  33 static bool GetMsiPropW( MSIHANDLE hMSI, const wchar_t* pPropName, wchar_t** ppValue )
  34 {
  35     DWORD sz = 0;
  36     if ( MsiGetPropertyW( hMSI, pPropName, const_cast<wchar_t *>(L""), &sz ) == ERROR_MORE_DATA )
  37     {
  38         sz++;
  39         DWORD nbytes = sz * sizeof( wchar_t );
  40         wchar_t* buff = static_cast<wchar_t*>( malloc( nbytes ) );
  41         assert(buff); // Don't handle OOM conditions
  42         ZeroMemory( buff, nbytes );
  43         MsiGetPropertyW( hMSI, pPropName, buff, &sz );
  44         *ppValue = buff;
  45
  46         return true;
  47     }
  48
  49     return false;
  50 }
  51
  52
  53 #ifdef DEBUG
  54 inline void OutputDebugStringFormatW( PCWSTR pFormat, ... )
  55 {
  56     WCHAR    buffer[1024];
  57     va_list  args;
  58
  59     va_start( args, pFormat );
  60     StringCchVPrintfW( buffer, sizeof(buffer)/sizeof(buffer[0]), pFormat, args );
  61     OutputDebugStringW( buffer );
  62     va_end(args);
  63 }
  64 #else
  65 static void OutputDebugStringFormatW( PCWSTR, ... )
  66 {
  67 }
  68 #endif
  69
  70
  71 extern "C" __declspec(dllexport) UINT __stdcall CheckVersions( MSIHANDLE hMSI )
  72 {
  73     // MessageBoxW(NULL, L"CheckVersions", L"Information", MB_OK | MB_ICONINFORMATION);
  74
  75     wchar_t* pVal = nullptr;
  76
  77     if ( GetMsiPropW( hMSI, L"NEWPRODUCTS", &pVal ) && pVal )
  78     {
  79         OutputDebugStringFormatW( L"DEBUG: NEWPRODUCTS found [%s]", pVal );
  80         if ( *pVal != 0 )
  81             SetMsiErrorCode( MSI_ERROR_NEW_VERSION_FOUND );
  82         free( pVal );
  83     }
  84     pVal = nullptr;
  85     if ( GetMsiPropW( hMSI, L"OLDPRODUCTS", &pVal ) && pVal )
  86     {
  87         OutputDebugStringFormatW( L"DEBUG: OLDPRODUCTS found [%s]", pVal );
  88         if ( *pVal != 0 )
  89             SetMsiErrorCode( MSI_ERROR_OLD_VERSION_FOUND );
  90         free( pVal );
  91     }
  92     pVal = nullptr;
  93
  94     return ERROR_SUCCESS;
  95 }
  96
  97
  98 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */