setup_native/source/win32/customactions/regpatchactivex/regpatchactivex.cxx

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  28
  29 #define UNICODE
  30
  31 #ifdef _MSC_VER
  32 #pragma warning(push,1) // disable warnings within system headers
  33 #endif
  34 #include <windows.h>
  35 #include <msiquery.h>
  36 #ifdef _MSC_VER
  37 #pragma warning(pop)
  38 #endif
  39
  40 #include <string.h>
  41 #include <malloc.h>
  42 #include <stdio.h>
  43
  44 //----------------------------------------------------------
  45 BOOL UnicodeEquals( wchar_t* pStr1, wchar_t* pStr2 )
  46 {
  47     if ( pStr1 == NULL && pStr2 == NULL )
  48         return TRUE;
  49     else if ( pStr1 == NULL || pStr2 == NULL )
  50         return FALSE;
  51
  52     while( *pStr1 == *pStr2 && *pStr1 && *pStr2 )
  53         pStr1++, pStr2++;
  54
  55     return ( *pStr1 == 0 && *pStr2 == 0 );
  56 }
  57
  58 //----------------------------------------------------------
  59 BOOL GetMsiProp( MSIHANDLE hMSI, const wchar_t* pPropName, wchar_t** ppValue )
  60 {
  61     DWORD sz = 0;
  62        if ( MsiGetProperty( hMSI, pPropName, L"", &sz ) == ERROR_MORE_DATA )
  63        {
  64            sz++;
  65            DWORD nbytes = sz * sizeof( wchar_t );
  66            wchar_t* buff = reinterpret_cast<wchar_t*>( malloc( nbytes ) );
  67            ZeroMemory( buff, nbytes );
  68            MsiGetProperty( hMSI, pPropName, buff, &sz );
  69            *ppValue = buff;
  70
  71         return TRUE;
  72     }
  73
  74     return FALSE;
  75 }
  76
  77 //----------------------------------------------------------
  78 BOOL MakeInstallForAllUsers( MSIHANDLE hMSI )
  79 {
  80     BOOL bResult = FALSE;
  81     wchar_t* pVal = NULL;
  82     if ( GetMsiProp( hMSI, L"ALLUSERS", &pVal ) && pVal )
  83     {
  84         bResult = UnicodeEquals( pVal , L"1" );
  85         free( pVal );
  86     }
  87
  88     return bResult;
  89 }
  90
  91 //----------------------------------------------------------
  92 extern "C" UINT __stdcall PatchActiveXControl( MSIHANDLE hMSI )
  93 {
  94     // MessageBox(NULL, L"PatchActiveXControl", L"Information", MB_OK | MB_ICONINFORMATION);
  95
  96     INSTALLSTATE current_state;
  97     INSTALLSTATE future_state;
  98
  99     if ( ERROR_SUCCESS == MsiGetFeatureState( hMSI, L"gm_o_Activexcontrol", &current_state, &future_state ) )
 100     {
 101         BOOL bInstallForAllUsers = MakeInstallForAllUsers( hMSI );
 102
 103         if ( future_state == INSTALLSTATE_LOCAL
 104           || ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_UNKNOWN ) )
 105         {
 106             HKEY hkey = NULL;
 107             char* aSubKey = "Software\\Classes\\MIME\\DataBase\\Content Type\\application/vnd.sun.xml.base";
 108                if ( ERROR_SUCCESS == RegCreateKeyA(bInstallForAllUsers ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER, aSubKey, &hkey) )
 109             {
 110                    RegDeleteValueA( hkey, "CLSID" );
 111                 RegCloseKey( hkey ), hkey = NULL;
 112             }
 113         }
 114     }
 115     else
 116     {
 117         // assert( FALSE );
 118     }
 119
 120     return ERROR_SUCCESS;
 121 }
 122
 123
 124 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */