79 lines
2.5 KiB
PHP
79 lines
2.5 KiB
PHP
<?php
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if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
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//https://stackoverflow.com/questions/4739284/htmlpurifier-iframe-vimeo-and-youtube-video
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/**
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* Based on: http://sachachua.com/blog/2011/08/drupal-html-purifier-embedding-iframes-youtube/
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* Iframe filter that does some primitive whitelisting in a somewhat recognizable and tweakable way
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*/
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if( !class_exists('HTMLPurifier_Filter_Iframevideo') ){
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class HTMLPurifier_Filter_iframevideo extends HTMLPurifier_Filter
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{
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public $name = 'Iframevideo';
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/**
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*
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* @param string $html
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return string
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*/
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public function preFilter($html, $config, $context)
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{
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if (strstr($html, '<iframe')) {
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$html = preg_replace_callback('/<iframe.*?src="https?:\/\/www\.youtube\.com\/embed\/([^"]*)[^>]*>(.*?)?\/iframe>/i', array($this, 'trust_url_match'), $html);
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$html = preg_replace_callback('/<iframe.*?src="https?:\/\/player\.vimeo.com\/video\/([^"]*)[^>]*>(.*?)?\/iframe>/i', array($this, 'trust_url_match'), $html);
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//$html = preg_replace('#<iframe#i', '<img class="Iframevideo"', $html);
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//$html = preg_replace('#</iframe>#i', '</img>', $html);
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}
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return $html;
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}
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public function trust_url_match($matches)
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{
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$str = $matches[0];
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if( $matches[1] ){
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$str = preg_replace('#<iframe#i', '<img class="Iframevideo"', $str);
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$str = preg_replace('#</iframe>#i', '</img>', $str);
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}
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return $str;
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}
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/**
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*
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* @param string $html
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return string
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*/
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public function postFilter($html, $config, $context)
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{
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$post_regex = '#<img class="Iframevideo"([^>]+?)>#';
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return preg_replace_callback($post_regex, array($this, 'postFilterCallback'), $html);
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}
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/**
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*
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* @param array $matches
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* @return string
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*/
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protected function postFilterCallback($matches)
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{
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// Domain Whitelist
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$youTubeMatch = preg_match('#src="https?://www.youtube(-nocookie)?.com/#i', $matches[1]);
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$vimeoMatch = preg_match('#src="https?://player.vimeo.com/#i', $matches[1]);
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if ($youTubeMatch || $vimeoMatch) {
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$extra = ' frameborder="0"';
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if ($youTubeMatch) {
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$extra .= ' allowfullscreen';
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} elseif ($vimeoMatch) {
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$extra .= ' webkitAllowFullScreen mozallowfullscreen allowFullScreen';
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}
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return '<iframe ' . $matches[1] . $extra . '></iframe>';
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} else {
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return '';
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}
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}
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}
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}
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?>
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