mirror of
https://github.com/ezyang/htmlpurifier.git
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314a48373c
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@308 48356398-32a2-884e-a903-53898d9a118a
47 lines
1.4 KiB
PHP
47 lines
1.4 KiB
PHP
<?php
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require_once 'HTMLPurifier/AttrDef.php';
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require_once 'HTMLPurifier/AttrDef/IPv4.php';
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require_once 'HTMLPurifier/AttrDef/IPv6.php';
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/**
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* Validates a host according to the IPv4, IPv6 and DNS specifications.
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*/
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class HTMLPurifier_AttrDef_Host extends HTMLPurifier_AttrDef
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{
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/**
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* Instances of HTMLPurifier_AttrDef_IPv4 and HTMLPurifier_AttrDef_IPv6
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*/
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var $ipv4, $ipv6;
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function HTMLPurifier_AttrDef_Host() {
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$this->ipv4 = new HTMLPurifier_AttrDef_IPv4();
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$this->ipv6 = new HTMLPurifier_AttrDef_IPv6();
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}
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function validate($string, $config, &$context) {
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$length = strlen($string);
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if ($string === '') return '';
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if ($length > 1 && $string[0] === '[' && $string[$length-1] === ']') {
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//IPv6
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$ip = substr($string, 1, $length - 2);
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$valid = $this->ipv6->validate($ip, $config, $context);
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if ($valid === false) return false;
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return '['. $valid . ']';
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}
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$ipv4 = $this->ipv4->validate($string, $config, $context);
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if ($ipv4 !== false) return $ipv4;
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// validate a domain name here, do filtering, etc etc etc
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// We could use this, but it would break I18N domain names
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//$match = preg_match('/^[a-z0-9][\w\-\.]*[a-z0-9]$/i', $string);
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//if (!$match) return false;
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return $string;
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}
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}
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?>
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