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floIcon: add experimental SizeInBytes cap

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Andrew Dolgov 2013-04-18 16:32:22 +04:00
parent ce2b219c64
commit 6a1f424924
1 changed files with 14 additions and 8 deletions
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8
lib/floIcon.php
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@ -291,9 +291,10 @@ class floIcon {
$header = unpack("SReserved/SType/SCount", fread($filePointer, 6));
for ($t = 0; $t < $header["Count"]; $t++) {
$newImage = new floIconImage();
$newImage->readImageFromICO($filePointer, 6 + ($t * 16));
if ($newImage->readImageFromICO($filePointer, 6 + ($t * 16))) {
$this->images[] = $newImage;
}
}
fclose($filePointer);
}
}
@ -780,6 +781,9 @@ class floIconImage {
$this->_entryIconFormat = fread($filePointer, 16);
$this->_entry = unpack("CWidth/CHeight/CColorCount/CReserved/SPlanes/SBitCount/LSizeInBytes/LFileOffset", $this->_entryIconFormat);
if ($this->_entry["SizeInBytes"] > 16384)
return false;
// Position the file pointer.
fseek($filePointer, $this->_entry["FileOffset"]);
@ -816,6 +820,8 @@ class floIconImage {
if ($this->_entry["Height"] == 0) {
$this->_entry["Height"] = $this->_header["Height"]/2;
}
return true;
}
function getHeader() {
return $this->_header;