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2012-01-31 00:56 UTC+0100 Przemyslaw Czerpak (druzus/at/poczta.onet.pl)

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* harbour/contrib/gtwvg/wvgwin.c
    ! added workaround for possible HVM string corruption and GPF in
      WVG_SENDMESSAGE() function. This function is still very danger
      when it's used with messages extracting data to passed buffer
      and user have to pass string large enough to avoid possible
      buffer overflow.
This commit is contained in:
Przemyslaw Czerpak
2012-01-30 23:57:05 +00:00
parent 720cf3e820
commit 70eef1da40
2 changed files with 13 additions and 1 deletions
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8
harbour/ChangeLog
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@@ -16,6 +16,14 @@
The license applies to all entries newer than 2009-04-28.
*/
2012-01-31 00:56 UTC+0100 Przemyslaw Czerpak (druzus/at/poczta.onet.pl)
* harbour/contrib/gtwvg/wvgwin.c
! added workaround for possible HVM string corruption and GPF in
WVG_SENDMESSAGE() function. This function is still very danger
when it's used with messages extracting data to passed buffer
and user have to pass string large enough to avoid possible
buffer overflow.
2012-01-31 00:37 UTC+0100 Przemyslaw Czerpak (druzus/at/poczta.onet.pl)
* harbour/contrib/gtwvg/wvgwin.c
! fixed wrongly used string handler instead of string pointer as

6
harbour/contrib/gtwvg/wvgwin.c
View File

@@ -125,7 +125,11 @@ static HINSTANCE wvg_hInstance( void )
HB_FUNC( WVG_SENDMESSAGE )
{
void * hText = NULL;
LPTSTR lpText = HB_PARSTR( 4, &hText, NULL );
HB_SIZE nLen = 0;
LPCTSTR lpText = HB_PARSTR( 4, &hText, &nLen );
if( lpText && HB_ISBYREF( 4 ) )
lpText = HB_STRUNSHARE( &hText, lpText, nLen );
hb_retnl( ( HB_ULONG ) SendMessage( ( HWND ) ( HB_PTRDIFF ) hb_parnint( 1 ),
( UINT ) hb_parni( 2 ),