55 lines
1.3 KiB
PHP
55 lines
1.3 KiB
PHP
<?php
|
|
|
|
class HTMLPurifier_URIFilter_DisableExternal extends HTMLPurifier_URIFilter
|
|
{
|
|
/**
|
|
* @type string
|
|
*/
|
|
public $name = 'DisableExternal';
|
|
|
|
/**
|
|
* @type array
|
|
*/
|
|
protected $ourHostParts = false;
|
|
|
|
/**
|
|
* @param HTMLPurifier_Config $config
|
|
* @return void
|
|
*/
|
|
public function prepare($config)
|
|
{
|
|
$our_host = $config->getDefinition('URI')->host;
|
|
if ($our_host !== null) {
|
|
$this->ourHostParts = array_reverse(explode('.', $our_host));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param HTMLPurifier_URI $uri Reference
|
|
* @param HTMLPurifier_Config $config
|
|
* @param HTMLPurifier_Context $context
|
|
* @return bool
|
|
*/
|
|
public function filter(&$uri, $config, $context)
|
|
{
|
|
if (is_null($uri->host)) {
|
|
return true;
|
|
}
|
|
if ($this->ourHostParts === false) {
|
|
return false;
|
|
}
|
|
$host_parts = array_reverse(explode('.', $uri->host));
|
|
foreach ($this->ourHostParts as $i => $x) {
|
|
if (!isset($host_parts[$i])) {
|
|
return false;
|
|
}
|
|
if ($host_parts[$i] != $this->ourHostParts[$i]) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// vim: et sw=4 sts=4
|