mirror of
https://github.com/ezyang/htmlpurifier.git
synced 2024-12-23 00:41:52 +00:00
50 lines
1.2 KiB
PHP
50 lines
1.2 KiB
PHP
<?php
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// must be called POST validation
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/**
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* Adds target="blank" to all outbound links. This transform is
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* only attached if Attr.TargetBlank is TRUE. This works regardless
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* of whether or not Attr.AllowedFrameTargets
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*/
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class HTMLPurifier_AttrTransform_TargetBlank extends HTMLPurifier_AttrTransform
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{
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/**
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* @type HTMLPurifier_URIParser
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*/
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private $parser;
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public function __construct()
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{
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$this->parser = new HTMLPurifier_URIParser();
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}
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/**
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* @param array $attr
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return array
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*/
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public function transform($attr, $config, $context)
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{
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if (!isset($attr['href'])) {
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return $attr;
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}
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// XXX Kind of inefficient
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$url = $this->parser->parse($attr['href']);
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// Ignore invalid schemes (e.g. `javascript:`)
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if (!($scheme = $url->getSchemeObj($config, $context))) {
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return $attr;
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}
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if ($scheme->browsable && !$url->isBenign($config, $context)) {
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$attr['target'] = '_blank';
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}
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return $attr;
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}
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}
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// vim: et sw=4 sts=4
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