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tommaso
2025-06-17 11:53:18 +02:00
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36
plugins/system/sef/sef.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<extension type="plugin" group="system" method="upgrade">
<name>plg_system_sef</name>
<author>Joomla! Project</author>
<creationDate>2007-12</creationDate>
<copyright>(C) 2007 Open Source Matters, Inc.</copyright>
<license>GNU General Public License version 2 or later; see LICENSE.txt</license>
<authorEmail>admin@joomla.org</authorEmail>
<authorUrl>www.joomla.org</authorUrl>
<version>3.0.0</version>
<description>PLG_SEF_XML_DESCRIPTION</description>
<namespace path="src">Joomla\Plugin\System\Sef</namespace>
<files>
<folder plugin="sef">services</folder>
<folder>src</folder>
</files>
<languages>
<language tag="en-GB">language/en-GB/plg_system_sef.ini</language>
<language tag="en-GB">language/en-GB/plg_system_sef.sys.ini</language>
</languages>
<config>
<fields name="params">
<fieldset name="basic">
<field
name="domain"
type="url"
label="PLG_SEF_DOMAIN_LABEL"
description="PLG_SEF_DOMAIN_DESCRIPTION"
hint="https://www.example.com"
filter="url"
validate="url"
/>
</fieldset>
</fields>
</config>
</extension>

46
plugins/system/sef/services/provider.php Normal file
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<?php
/**
* @package Joomla.Plugin
* @subpackage System.sef
*
* @copyright (C) 2023 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
\defined('_JEXEC') or die;
use Joomla\CMS\Extension\PluginInterface;
use Joomla\CMS\Factory;
use Joomla\CMS\Plugin\PluginHelper;
use Joomla\DI\Container;
use Joomla\DI\ServiceProviderInterface;
use Joomla\Event\DispatcherInterface;
use Joomla\Plugin\System\Sef\Extension\Sef;
return new class () implements ServiceProviderInterface {
/**
* Registers the service provider with a DI container.
*
* @param Container $container The DI container.
*
* @return void
*
* @since 4.4.0
*/
public function register(Container $container): void
{
$container->set(
PluginInterface::class,
function (Container $container) {
$plugin = new Sef(
$container->get(DispatcherInterface::class),
(array) PluginHelper::getPlugin('system', 'sef')
);
$plugin->setApplication(Factory::getApplication());
return $plugin;
}
);
}
};

218
plugins/system/sef/src/Extension/Sef.php Normal file
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<?php
/**
* @package Joomla.Plugin
* @subpackage System.sef
*
* @copyright (C) 2007 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
namespace Joomla\Plugin\System\Sef\Extension;
use Joomla\CMS\Plugin\CMSPlugin;
use Joomla\CMS\Router\Route;
use Joomla\CMS\Uri\Uri;
// phpcs:disable PSR1.Files.SideEffects
\defined('_JEXEC') or die;
// phpcs:enable PSR1.Files.SideEffects
/**
* Joomla! SEF Plugin.
*
* @since 1.5
*/
final class Sef extends CMSPlugin
{
/**
* Add the canonical uri to the head.
*
* @return void
*
* @since 3.5
*/
public function onAfterDispatch()
{
$doc = $this->getApplication()->getDocument();
if (!$this->getApplication()->isClient('site') || $doc->getType() !== 'html') {
return;
}
$sefDomain = $this->params->get('domain', false);
// Don't add a canonical html tag if no alternative domain has added in SEF plugin domain field.
if (empty($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 = $sefDomain . Uri::getInstance($canonical)->toString(['path', 'query', 'fragment']);
} else {
// If a canonical html doesn't exists already add a canonical html tag using the SEF plugin domain field.
$canonical = $sefDomain . Uri::getInstance()->toString(['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->getApplication()->isClient('site')) {
return;
}
// Replace src links.
$base = Uri::base(true) . '/';
$buffer = $this->getApplication()->getBody();
// For feeds we need to search for the URL with domain.
$prefix = $this->getApplication()->getDocument()->getType() === 'feed' ? Uri::root() : '';
// Replace index.php URI by SEF URI.
if (strpos($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, '/') . Route::_('index.php?' . $urlQueryString) . '"',
$buffer
);
}
$this->checkBuffer($buffer);
}
// Check for all unknown protocols (a protocol must contain at least one alphanumeric character followed by a ":").
$protocols = '[a-zA-Z0-9\-]+:';
$attributes = ['href=', 'src=', 'poster='];
foreach ($attributes as $attribute) {
if (strpos($buffer, $attribute) !== false) {
$regex = '#\s' . $attribute . '"(?!/|' . $protocols . '|\#|\')([^"]*)"#m';
$buffer = preg_replace($regex, ' ' . $attribute . '"' . $base . '$1"', $buffer);
$this->checkBuffer($buffer);
}
}
if (strpos($buffer, 'srcset=') !== false) {
$regex = '#\s+srcset="([^"]+)"#m';
$buffer = preg_replace_callback(
$regex,
function ($match) use ($base, $protocols) {
preg_match_all('#(?:[^\s]+)\s*(?:[\d\.]+[wx])?(?:\,\s*)?#i', $match[1], $matches);
foreach ($matches[0] as &$src) {
$src = preg_replace('#^(?!/|' . $protocols . '|\#|\')(.+)#', $base . '$1', $src);
}
return ' srcset="' . implode($matches[0]) . '"';
},
$buffer
);
$this->checkBuffer($buffer);
}
// Replace all unknown protocols 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.
$attributes = ['onmouseover=', 'onmouseout='];
foreach ($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_url = '\s*url\s*\(([\'\"]|\&\#0?3[49];)?(?!/|\&\#0?3[49];|' . $protocols . '|\#)([^\)\'\"]+)([\'\"]|\&\#0?3[49];)?\)';
$regex = '#style=\s*([\'\"])(.*):' . $regex_url . '#m';
$buffer = preg_replace($regex, 'style=$1$2: url($3' . $base . '$4$5)', $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.
$this->getApplication()->setBody($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);
}
}
}