%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* @package Joomla.Plugin
* @subpackage System.sef
*
* @copyright Copyright (C) 2005 - 2016 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('_JEXEC') or die;
/**
* Joomla! SEF Plugin.
*
* @since 1.5
*/
class PlgSystemSef extends JPlugin
{
/**
* Application object.
*
* @var JApplicationCms
* @since 3.5
*/
protected $app;
/**
* Add the canonical uri to the head.
*
* @return void
*
* @since 3.5
*/
public function onAfterDispatch()
{
$doc = $this->app->getDocument();
if (!$this->app->isSite() || $doc->getType() !== 'html')
{
return;
}
$sefDomain = $this->params->get('domain', '');
// Don't add a canonical html tag if no alternative domain has added in SEF plugin domain field.
if (empty($sefDomain))
{
return;
}
// Check if a canonical html tag already exists (for instance, added by a component).
$canonical = '';
foreach ($doc->_links as $linkUrl => $link)
{
if (isset($link['relation']) && $link['relation'] === 'canonical')
{
$canonical = $linkUrl;
break;
}
}
// If a canonical html tag already exists get the canonical and change it to use the SEF plugin domain field.
if (!empty($canonical))
{
// Remove current canonical link.
unset($doc->_links[$canonical]);
// Set the current canonical link but use the SEF system plugin domain field.
$canonical = $sefDomain . JUri::getInstance($canonical)->toString(array('path', 'query', 'fragment'));
}
// If a canonical html doesn't exists already add a canonical html tag using the SEF plugin domain field.
else
{
$canonical = $sefDomain . JUri::getInstance()->toString(array('path', 'query', 'fragment'));
}
// Add the canonical link.
$doc->addHeadLink(htmlspecialchars($canonical), 'canonical');
}
/**
* Convert the site URL to fit to the HTTP request.
*
* @return void
*/
public function onAfterRender()
{
if (!$this->app->isSite() || $this->app->get('sef', '0') == '0')
{
return;
}
// Replace src links.
$base = JUri::base(true) . '/';
$buffer = $this->app->getBody();
// For feeds we need to search for the URL with domain.
$prefix = $this->app->getDocument()->getType() === 'feed' ? JUri::root() : '';
// Replace index.php URI by SEF URI.
if (strpos($buffer, 'href="' . $prefix . 'index.php?') !== false)
{
preg_match_all('#href="' . $prefix . 'index.php\?([^"]+)"#m', $buffer, $matches);
foreach ($matches[1] as $urlQueryString)
{
$buffer = str_replace(
'href="' . $prefix . 'index.php?' . $urlQueryString . '"',
'href="' . trim($prefix, '/') . JRoute::_('index.php?' . $urlQueryString) . '"',
$buffer
);
}
$this->checkBuffer($buffer);
}
// Check for all unknown protocals (a protocol must contain at least one alpahnumeric character followed by a ":").
$protocols = '[a-zA-Z0-9\-]+:';
$attributes = array('href=', 'src=', 'srcset=', 'poster=');
foreach ($attributes as $attribute)
{
if (strpos($buffer, $attribute) !== false)
{
$regex = '#\s+' . $attribute . '"(?!/|' . $protocols . '|\#|\')([^"]*)"#m';
$buffer = preg_replace($regex, ' ' . $attribute . '"' . $base . '$1"', $buffer);
$this->checkBuffer($buffer);
}
}
// Replace all unknown protocals in javascript window open events.
if (strpos($buffer, 'window.open(') !== false)
{
$regex = '#onclick="window.open\(\'(?!/|' . $protocols . '|\#)([^/]+[^\']*?\')#m';
$buffer = preg_replace($regex, 'onclick="window.open(\'' . $base . '$1', $buffer);
$this->checkBuffer($buffer);
}
// Replace all unknown protocols in onmouseover and onmouseout attributes.
$attributes = array('onmouseover=', 'onmouseout=');
foreach ($attributes as $attribute)
{
if (strpos($buffer, $attribute) !== false)
{
$regex = '#' . $attribute . '"this.src=([\']+)(?!/|' . $protocols . '|\#|\')([^"]+)"#m';
$buffer = preg_replace($regex, $attribute . '"this.src=$1' . $base . '$2"', $buffer);
$this->checkBuffer($buffer);
}
}
// Replace all unknown protocols in CSS background image.
if (strpos($buffer, 'style=') !== false)
{
$regex = '#style=\s*[\'\"](.*):\s*url\s*\([\'\"]?(?!/|' . $protocols . '|\#)([^\)\'\"]+)[\'\"]?\)#m';
$buffer = preg_replace($regex, 'style="$1: url(\'' . $base . '$2$3\')', $buffer);
$this->checkBuffer($buffer);
}
// Replace all unknown protocols in OBJECT param tag.
if (strpos($buffer, '<param') !== false)
{
// OBJECT <param name="xx", value="yy"> -- fix it only inside the <param> tag.
$regex = '#(<param\s+)name\s*=\s*"(movie|src|url)"[^>]\s*value\s*=\s*"(?!/|' . $protocols . '|\#|\')([^"]*)"#m';
$buffer = preg_replace($regex, '$1name="$2" value="' . $base . '$3"', $buffer);
$this->checkBuffer($buffer);
// OBJECT <param value="xx", name="yy"> -- fix it only inside the <param> tag.
$regex = '#(<param\s+[^>]*)value\s*=\s*"(?!/|' . $protocols . '|\#|\')([^"]*)"\s*name\s*=\s*"(movie|src|url)"#m';
$buffer = preg_replace($regex, '<param value="' . $base . '$2" name="$3"', $buffer);
$this->checkBuffer($buffer);
}
// Replace all unknown protocols in OBJECT tag.
if (strpos($buffer, '<object') !== false)
{
$regex = '#(<object\s+[^>]*)data\s*=\s*"(?!/|' . $protocols . '|\#|\')([^"]*)"#m';
$buffer = preg_replace($regex, '$1data="' . $base . '$2"', $buffer);
$this->checkBuffer($buffer);
}
// Use the replaced HTML body.
$this->app->setBody($buffer);
}
/**
* Check the buffer.
*
* @param string $buffer Buffer to be checked.
*
* @return void
*/
private function checkBuffer($buffer)
{
if ($buffer === null)
{
switch (preg_last_error())
{
case PREG_BACKTRACK_LIMIT_ERROR:
$message = "PHP regular expression limit reached (pcre.backtrack_limit)";
break;
case PREG_RECURSION_LIMIT_ERROR:
$message = "PHP regular expression limit reached (pcre.recursion_limit)";
break;
case PREG_BAD_UTF8_ERROR:
$message = "Bad UTF8 passed to PCRE function";
break;
default:
$message = "Unknown PCRE error calling PCRE function";
}
throw new RuntimeException($message);
}
}
/**
* Replace the matched tags.
*
* @param array &$matches An array of matches (see preg_match_all).
*
* @return string
*
* @deprecated 4.0 No replacement.
*/
protected static function route(&$matches)
{
JLog::add(__METHOD__ . ' is deprecated, no replacement.', JLog::WARNING, 'deprecated');
$url = $matches[1];
$url = str_replace('&', '&', $url);
$route = JRoute::_('index.php?' . $url);
return 'href="' . $route;
}
}
Zerion Mini Shell 1.0