0005354: OutOfMemory with UserCake Captcha

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Category

Severity

Reproducibility

Date Submitted

Last Update

0005354

[Quercus]

minor

always

01-31-13 06:12

01-31-13 12:11

Reporter

cowan

View Status

public

Assigned To

nam

Priority

normal

Resolution

fixed

Status

closed

Product Version

4.0.34

Summary

0005354: OutOfMemory with UserCake Captcha

Description

The following code, from the UserCake project, causes:

"WarningService: Shutdown: TcpSocketLink OutOfMemory"

Something throws an OutOfMemoryException due to out of heap memory. It happens consistently on Resin Pro 4.0.34.

I'm not positive it's a Quercus bug, but this code looks fairly insignificant, so I suspect there is some issue in Quercus that causes the problem not the UserCake code.

/*
UserCake Version: 2.0.1
http://usercake.com [^]
*/
session_start();
$md5_hash = md5(rand(0,99999));
$security_code = substr($md5_hash, 25, 5);
$enc = md5($security_code);
$_SESSION['captcha'] = $enc;

$width = 150;
$height = 30;

$image = ImageCreate($width, $height);
$white = ImageColorAllocate($image, 255, 255, 255);
$black = ImageColorAllocate($image, 0, 0, 0);
$grey = ImageColorAllocate($image, 200, 200, 200);

ImageFill($image, 0, 0, $white);
ImageString($image, 10, 5, 0, $security_code, $black);

header("Content-Type: image/png");
ImagePng($image);
ImageDestroy($image);
ImageDestroy($image);

?>

Additional Information

Attached Files

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Notes
(0006171) cowan 01-31-13 06:14 edited on: 01-31-13 06:14	The code is models/captcha.php, which is used by registration.php to produce a captcha image.

(0006173) nam 01-31-13 12:11	php/1p1j Fixed for 4.0.35. Quercus wasn't properly handling fills where the start pixel's color is the same as the filling color (in effect doing nothing). FYI, the first call to ImageColorAllocate() auto-fills the image with $white. So the call to imagefill() is redundant.

Issue History
Date Modified	Username	Field	Change
01-31-13 06:12	cowan	New Issue
01-31-13 06:14	cowan	Note Added: 0006171
01-31-13 06:14	cowan	Note Edited: 0006171
01-31-13 12:08	nam	Status	new => assigned
01-31-13 12:08	nam	Assigned To	=> nam
01-31-13 12:11	nam	Status	assigned => closed
01-31-13 12:11	nam	Note Added: 0006173
01-31-13 12:11	nam	Resolution	open => fixed
01-31-13 12:11	nam	Fixed in Version	=> 4.0.35

Mantis 1.0.0rc3[^]

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