setup_native/source/win32/customactions/shellextensions/checkpatches.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  28
  29 #define _WIN32_WINNT 0x0401
  30
  31 #ifdef _MSC_VER
  32 #pragma warning(push, 1) /* disable warnings within system headers */
  33 #endif
  34 #define WIN32_LEAN_AND_MEAN
  35 #include <windows.h>
  36 #include <msiquery.h>
  37 #ifdef _MSC_VER
  38 #pragma warning(pop)
  39 #endif
  40
  41 #include <malloc.h>
  42 #include <assert.h>
  43
  44 #ifdef UNICODE
  45 #define _UNICODE
  46 #define _tstring    wstring
  47 #else
  48 #define _tstring    string
  49 #endif
  50 #include <tchar.h>
  51 #include <string>
  52 #include <queue>
  53 #include <stdio.h>
  54 #include <strsafe.h>
  55
  56 #include <systools/win32/uwinapi.h>
  57
  58 //----------------------------------------------------------
  59 #ifdef DEBUG
  60 inline void OutputDebugStringFormat( LPCSTR pFormat, ... )
  61 {
  62     CHAR    buffer[1024];
  63     va_list args;
  64
  65     va_start( args, pFormat );
  66     StringCchVPrintfA( buffer, sizeof(buffer), pFormat, args );
  67     OutputDebugStringA( buffer );
  68 }
  69 #else
  70 static inline void OutputDebugStringFormat( LPCSTR, ... )
  71 {
  72 }
  73 #endif
  74
  75 static std::_tstring GetMsiProperty( MSIHANDLE handle, const std::_tstring& sProperty )
  76 {
  77     std::_tstring result;
  78     TCHAR szDummy[1] = TEXT("");
  79     DWORD nChars = 0;
  80
  81     if ( MsiGetProperty( handle, sProperty.c_str(), szDummy, &nChars ) == ERROR_MORE_DATA )
  82     {
  83         DWORD nBytes = ++nChars * sizeof(TCHAR);
  84         LPTSTR buffer = reinterpret_cast<LPTSTR>(_alloca(nBytes));
  85         ZeroMemory( buffer, nBytes );
  86         MsiGetProperty(handle, sProperty.c_str(), buffer, &nChars);
  87         result = buffer;
  88     }
  89
  90     return result;
  91 }
  92
  93 static void SetMsiProperty( MSIHANDLE handle, const std::_tstring& sProperty )
  94 {
  95     MsiSetProperty( handle, sProperty.c_str(), TEXT("1") );
  96 }
  97
  98 extern "C" UINT __stdcall CheckPatchList( MSIHANDLE handle )
  99 {
 100     std::_tstring sPatchList = GetMsiProperty( handle, TEXT("PATCH") );
 101     std::_tstring sRequiredPatch = GetMsiProperty( handle, TEXT("PREREQUIREDPATCH") );
 102
 103     OutputDebugStringFormat( "CheckPatchList called with PATCH=%s and PRQ= %s\n", sPatchList.c_str(), sRequiredPatch.c_str() );
 104
 105     if ( ( sPatchList.length() != 0 ) && ( sRequiredPatch.length() != 0 ) )
 106     {
 107         if ( _tcsstr( sPatchList.c_str(), sRequiredPatch.c_str() ) )
 108         {
 109             SetMsiProperty( handle, TEXT("IGNOREPREREQUIREDPATCH") );
 110             OutputDebugStringFormat( "Set Property IgnorePrerequiredPatch!\n" );
 111         }
 112     }
 113     return ERROR_SUCCESS;
 114 }
 115
 116 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */