Thunderrabbit: wiped out a block of crap that no one will need

2007-12-19T08:46:57Z

wiped out a block of crap that no one will need

← Older revision		Revision as of 01:46, 19 December 2007
Line 6:		Line 6:
	== Caveats ==		== Caveats ==

	I am just slapping this code down here so you can pick out the bits you like. I've stripped most of the code that's specific to my environment, but haven't tested it since then.		I am just slapping this code down here so you can pick out the bits you like. I've stripped most of the code that's specific to my (work) environment, but haven't tested it since then.

	== Source ==		== Source ==
Line 20:		Line 20:
	$image_list = array('good' => 'goodimage.gif', 'bad' => 'bad.gif');		$image_list = array('good' => 'goodimage.gif', 'bad' => 'bad.gif');

	$~~host =~~ $_SERVER['HTTP_REFERER'];		if(preg_match ($VALID_DOMAIN, $_SERVER['HTTP_REFERER'] )

	~~$matches = array();~~
	~~$pattern = '#(^\|[^\"\'=\]])(http\|HTTP\|ftp)(s\|S)?://((([^\s<>\.]+)\.)+[^\s<>\.]+)#';~~
	~~preg_match ($pattern , $VALID_URL, $matches );~~
	~~$domain_ary = explode("/", $matches[4]);~~
	~~$matches = array();~~
	~~preg_match ($pattern, $host, $matches );~~

	~~$publish_url_ary = explode("/", $matches[4]);~~
	~~if ($domain_ary[0] == $publish_url_ary[0~~])
	$name = $image_file_directory . $image_list['good'];		$name = $image_file_directory . $image_list['good'];
	else		else
	$name = $image_file_directory . $image_list['bad'];		$name = $image_file_directory . $image_list['bad'];


	// Date in the past		// Date in the past

Thunderrabbit: initial version; hasn't been tested since I stripped it from my code at work

2007-12-19T08:31:41Z

initial version; hasn't been tested since I stripped it from my code at work

New page

<digg />
== Description ==

This PHP code is supposed to prevent remote linking of images. I'm just slapping it down here for now and may make it actually work later.

== Caveats ==

I am just slapping this code down here so you can pick out the bits you like. I've stripped most of the code that's specific to my environment, but haven't tested it since then.

== Source ==
<source lang="php">
<?php
//***********************************************//
//
// this code is freeware
//
//***********************************************//

$image_file_directory = $DOCUMENT_ROOT . "images/"; // prefix for image names in $image_list
$image_list = array('good' => 'goodimage.gif', 'bad' => 'bad.gif');

$host = $_SERVER['HTTP_REFERER'];

$matches = array();
$pattern = '#(^|[^\"\'=\]])(http|HTTP|ftp)(s|S)?://((([^\s<>\.]+)\.)+[^\s<>\.]+)#';
preg_match ($pattern , $VALID_URL, $matches );
$domain_ary = explode("/", $matches[4]);
$matches = array();
preg_match ($pattern, $host, $matches );

$publish_url_ary = explode("/", $matches[4]);
if ($domain_ary[0] == $publish_url_ary[0])
$name = $image_file_directory . $image_list['good'];
else
$name = $image_file_directory . $image_list['bad'];

// Date in the past
header("Expires: Wed, 19 Dec 2007 07:41:51 GMT");
// always modified
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
// HTTP/1.1
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
// HTTP/1.0
header("Pragma: no-cache");
// send the right headers
$pathinfo = pathinfo($name);
$subtype = $pathinfo['extension'];
header("Content-Type: image/$subtype");
header("Content-Length: " . filesize($name));

// open the file in a binary mode
$fp = fopen($name, 'rb');
// stream the picture out to the browser
fpassthru($fp);
fclose($fp);

?>
</source>

[[Category:PHP code]]

PHP to prevent remote linking of images - Revision history

Thunderrabbit: wiped out a block of crap that no one will need

Thunderrabbit: initial version; hasn't been tested since I stripped it from my code at work