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$NetBSD: patch-ak,v 1.2 2005/03/10 15:23:10 wiz Exp $
--- lib/scan.c.orig 1998-03-19 20:51:00.000000000 +0100
+++ lib/scan.c
@@ -103,7 +103,8 @@ LFUNC(MSWGetImagePixels, int, (Display *
LFUNC(ScanTransparentColor, int, (XpmColor *color, unsigned int cpp,
XpmAttributes *attributes));
-LFUNC(ScanOtherColors, int, (Display *display, XpmColor *colors, int ncolors,
+LFUNC(ScanOtherColors, int, (Display *display, XpmColor *colors,
+ unsigned int ncolors,
Pixel *pixels, unsigned int mask,
unsigned int cpp, XpmAttributes *attributes));
@@ -228,11 +229,17 @@ XpmCreateXpmImageFromImage(display, imag
else
cpp = 0;
+ if ((height > 0 && width >= SIZE_MAX / height) ||
+ width * height >= SIZE_MAX / sizeof(unsigned int))
+ RETURN(XpmNoMemory);
pmap.pixelindex =
(unsigned int *) XpmCalloc(width * height, sizeof(unsigned int));
if (!pmap.pixelindex)
RETURN(XpmNoMemory);
+ if (pmap.size >= SIZE_MAX / sizeof(Pixel))
+ RETURN(XpmNoMemory);
+
pmap.pixels = (Pixel *) XpmMalloc(sizeof(Pixel) * pmap.size);
if (!pmap.pixels)
RETURN(XpmNoMemory);
@@ -298,6 +305,8 @@ XpmCreateXpmImageFromImage(display, imag
* color
*/
+ if (pmap.ncolors >= SIZE_MAX / sizeof(XpmColor))
+ RETURN(XpmNoMemory);
colorTable = (XpmColor *) XpmCalloc(pmap.ncolors, sizeof(XpmColor));
if (!colorTable)
RETURN(XpmNoMemory);
@@ -356,6 +365,8 @@ ScanTransparentColor(color, cpp, attribu
/* first get a character string */
a = 0;
+ if (cpp >= SIZE_MAX - 1)
+ return (XpmNoMemory);
if (!(s = color->string = (char *) XpmMalloc(cpp + 1)))
return (XpmNoMemory);
*s++ = printable[c = a % MAXPRINTABLE];
@@ -403,7 +414,7 @@ static int
ScanOtherColors(display, colors, ncolors, pixels, mask, cpp, attributes)
Display *display;
XpmColor *colors;
- int ncolors;
+ unsigned int ncolors;
Pixel *pixels;
unsigned int mask;
unsigned int cpp;
@@ -447,6 +458,8 @@ ScanOtherColors(display, colors, ncolors
}
/* first get character strings and rgb values */
+ if (ncolors >= SIZE_MAX / sizeof(XColor) || cpp >= SIZE_MAX - 1)
+ return (XpmNoMemory);
xcolors = (XColor *) XpmMalloc(sizeof(XColor) * ncolors);
if (!xcolors)
return (XpmNoMemory);
@@ -615,6 +628,9 @@ GetImagePixels(image, width, height, pma
ibpp = image->bits_per_pixel;
offset = image->xoffset;
+ if (image->bitmap_unit < 0)
+ return (XpmNoMemory);
+
if ((image->bits_per_pixel | image->depth) == 1) {
ibu = image->bitmap_unit;
for (y = 0; y < height; y++)
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