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<?php
// It's not clear to me whether or not Punycode means that hostnames
// do not have canonical forms anymore. As far as I can tell, it's
// not a problem (punycoding should be identity when no Unicode
// points are involved), but I'm not 100% sure
class HTMLPurifier_URIFilter_HostBlacklist extends HTMLPurifier_URIFilter
{
public $name = 'HostBlacklist';
protected $blacklist = array();
public function prepare($config) {
$this->blacklist = $config->get('URI.HostBlacklist');
return true;
}
public function filter(&$uri, $config, $context) {
foreach($this->blacklist as $blacklisted_host_fragment) {
if (strpos($uri->host, $blacklisted_host_fragment) !== false) {
return false;
}
}
return true;
}
}
// vim: et sw=4 sts=4
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