rastertopwg: doesn't check result of cupsRasterReadPixels

[michaelrsweet]

Version: 2.0-current
CUPS.org User: pdewacht

The rastertopwg filter doesn't check the result of cupsRasterReadPixels. As a result, if the filter receives truncated input, it will output a junk page.

[michaelrsweet]

CUPS.org User: mike

Fixed in Subversion repository.

[michaelrsweet]

"str4597.patch":

Index: filter/rastertopwg.c

--- filter/rastertopwg.c (revision 12597)
+++ filter/rastertopwg.c (working copy)
@@ -418,7 +418,14 @@

 for (y = inheader.cupsHeight; y > 0; y --)
 {

•  cupsRasterReadPixels(inras, line + lineoffset, inheader.cupsBytesPerLine);
  

•  if (cupsRasterReadPixels(inras, line + lineoffset, inheader.cupsBytesPerLine) != inheader.cupsBytesPerLine)
  

•  {
  

• _cupsLangPrintFilter(stderr, "ERROR", _("Error reading raster data."));
• fprintf(stderr, "DEBUG: Unable to read line %d for page %d.\n",

•       inheader.cupsHeight - y + page_top + 1, page);
  

• return (1);

•  }
  

  • if (!cupsRasterWritePixels(outras, line, outheader.cupsBytesPerLine))
    {
    _cupsLangPrintFilter(stderr, "ERROR", _("Error sending raster data."));