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[NTGDI] Strictly check pen style (#4164)

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- Check the pen style and elegantly fail if the style was wrong.
CORE-13819
This commit is contained in:
Katayama Hirofumi MZ 2021-12-16 10:47:57 +09:00 committed by GitHub
parent 545e1190f2
commit e3622ebe4e
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 46 additions and 11 deletions
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57
win32ss/gdi/ntgdi/pen.c
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@ -115,11 +115,54 @@ IntGdiExtCreatePen(
DPRINT("Can't allocate pen\n");
return 0;
}
hPen = pbrushPen->BaseObject.hHmgr;
// If nWidth is zero, the pen is a single pixel wide, regardless of the current transformation.
if ((bOldStylePen) && (!dwWidth) && ((dwPenStyle & PS_STYLE_MASK) != PS_SOLID))
dwWidth = 1;
if (bOldStylePen)
{
// If nWidth is zero, the pen is a single pixel wide, regardless of the current transformation.
if (!dwWidth && (dwPenStyle & PS_STYLE_MASK) != PS_SOLID)
dwWidth = 1;
}
else
{
switch (dwPenStyle & PS_ENDCAP_MASK)
{
case PS_ENDCAP_ROUND:
case PS_ENDCAP_SQUARE:
case PS_ENDCAP_FLAT:
break;
default:
goto ExitCleanup;
}
switch (dwPenStyle & PS_JOIN_MASK)
{
case PS_JOIN_ROUND:
case PS_JOIN_BEVEL:
case PS_JOIN_MITER:
break;
default:
goto ExitCleanup;
}
switch (dwPenStyle & PS_TYPE_MASK)
{
case PS_COSMETIC:
if (dwWidth != 1 || ulBrushStyle != BS_SOLID)
goto ExitCleanup;
break;
case PS_GEOMETRIC:
break;
default:
goto ExitCleanup;
}
}
pbrushPen->lWidth = dwWidth;
FLOATOBJ_SetLong(&pbrushPen->eWidth, pbrushPen->lWidth);
@ -131,16 +174,8 @@ IntGdiExtCreatePen(
pbrushPen->dwStyleCount = 0;
pbrushPen->pStyle = NULL;
pbrushPen->ulStyleSize = 0;
pbrushPen->flAttrs = bOldStylePen ? BR_IS_OLDSTYLEPEN : BR_IS_PEN;
// If dwPenStyle is PS_COSMETIC, the width must be set to 1.
if ( !(bOldStylePen) && ((dwPenStyle & PS_TYPE_MASK) == PS_COSMETIC) && ( dwWidth != 1) )
goto ExitCleanup;
// If dwPenStyle is PS_COSMETIC, the brush style must be BS_SOLID.
if ( !(bOldStylePen) && ((dwPenStyle & PS_TYPE_MASK) == PS_COSMETIC) && (ulBrushStyle != BS_SOLID) )
goto ExitCleanup;
switch (dwPenStyle & PS_STYLE_MASK)
{
case PS_NULL: