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Support YouTube slideshow embedding.

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YouTube slideshows contain a /cp/, not a /v/, in their URL;
relax the YouTube filter to allow them.

Signed-off-by: Nigel McNie <nigel@catalyst.net.nz>
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
This commit is contained in:
Edward Z. Yang 2010-03-07 18:57:22 -05:00
parent b3ca1498c2
commit aea7d02dfe
3 changed files with 9 additions and 6 deletions
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1
NEWS
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@ -11,6 +11,7 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
4.1.0, unknown release date 4.1.0, unknown release date
! Support proprietary height attribute on table element ! Support proprietary height attribute on table element
! Support YouTube slideshows that contain /cp/ in their URL.
4.0.0, released 2009-07-07 4.0.0, released 2009-07-07
# APIs for ConfigSchema subsystem have substantially changed. See # APIs for ConfigSchema subsystem have substantially changed. See

10
library/HTMLPurifier/Filter/YouTube.php
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@ -7,13 +7,13 @@ class HTMLPurifier_Filter_YouTube extends HTMLPurifier_Filter
public function preFilter($html, $config, $context) { public function preFilter($html, $config, $context) {
$pre_regex = '#<object[^>]+>.+?'. $pre_regex = '#<object[^>]+>.+?'.
'http://www.youtube.com/v/([A-Za-z0-9\-_]+).+?</object>#s'; 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s';
$pre_replace = '<span class="youtube-embed">\1</span>'; $pre_replace = '<span class="youtube-embed">\1</span>';
return preg_replace($pre_regex, $pre_replace, $html); return preg_replace($pre_regex, $pre_replace, $html);
} }
public function postFilter($html, $config, $context) { public function postFilter($html, $config, $context) {
$post_regex = '#<span class="youtube-embed">([A-Za-z0-9\-_]+)</span>#'; $post_regex = '#<span class="youtube-embed">((?:v|cp)/[A-Za-z0-9\-_=]+)</span>#';
return preg_replace_callback($post_regex, array($this, 'postFilterCallback'), $html); return preg_replace_callback($post_regex, array($this, 'postFilterCallback'), $html);
} }
@ -24,10 +24,10 @@ class HTMLPurifier_Filter_YouTube extends HTMLPurifier_Filter
protected function postFilterCallback($matches) { protected function postFilterCallback($matches) {
$url = $this->armorUrl($matches[1]); $url = $this->armorUrl($matches[1]);
return '<object width="425" height="350" type="application/x-shockwave-flash" '. return '<object width="425" height="350" type="application/x-shockwave-flash" '.
'data="http://www.youtube.com/v/'.$url.'">'. 'data="http://www.youtube.com/'.$url.'">'.
'<param name="movie" value="http://www.youtube.com/v/'.$url.'"></param>'. '<param name="movie" value="http://www.youtube.com/'.$url.'"></param>'.
'<!--[if IE]>'. '<!--[if IE]>'.
'<embed src="http://www.youtube.com/v/'.$url.'"'. '<embed src="http://www.youtube.com/'.$url.'"'.
'type="application/x-shockwave-flash"'. 'type="application/x-shockwave-flash"'.
'wmode="transparent" width="425" height="350" />'. 'wmode="transparent" width="425" height="350" />'.
'<![endif]-->'. '<![endif]-->'.

4
smoketests/preserveYouTube.php
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@ -15,7 +15,9 @@ echo '<?xml version="1.0" encoding="UTF-8" ?>';
<h1>HTML Purifier Preserve YouTube Smoketest</h1> <h1>HTML Purifier Preserve YouTube Smoketest</h1>
<?php <?php
$string = '<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/BdU--T8rLns"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/BdU--T8rLns" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>'; $string = '<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/BdU--T8rLns"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/BdU--T8rLns" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>
<object width="416" height="337"><param name="movie" value="http://www.youtube.com/cp/vjVQa1PpcFNbP_fag8PvopkXZyiXyT0J8U47lw7x5Fc="></param><embed src="http://www.youtube.com/cp/vjVQa1PpcFNbP_fag8PvopkXZyiXyT0J8U47lw7x5Fc=" type="application/x-shockwave-flash" width="416" height="337"></embed></object>';
$regular_purifier = new HTMLPurifier(); $regular_purifier = new HTMLPurifier();