/**
* 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'));
} else {
$canonical = $sefDomain . JUri::getInstance()->toString(array('path', 'query', 'fragment'));
}
// Add the canonical link.
$doc->addHeadLink(htmlspecialchars($canonical), 'canonical');
}
/**
* 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;
}
$uri = JUri::getInstance();
$domain = $this->params->get('domain');
if ($domain === false || $domain === '') {
$domain = $uri->toString(array('scheme', 'host', 'port'));
}
$link = $domain . JRoute::_('index.php?' . http_build_query($this->app->getRouter()->getVars()), false);
if (rawurldecode($uri->toString()) !== $link) {
$doc->addHeadLink(htmlspecialchars($link), 'canonical');
}
}
/**
* Determines if the message should be displayed
*
* @return boolean
*
* @since __DEPLOY_VERSION__
*/
private function shouldDisplayMessage()
{
// Only on admin app
if (!$this->app->isAdmin()) {
return false;
}
// Only if authenticated
if (JFactory::getUser()->guest) {
return false;
}
// Only on HTML documents
if ($this->app->getDocument()->getType() !== 'html') {
return false;
}
// Only on full page requests
if ($this->app->input->getCmd('tmpl', 'index') === 'component') {
return false;
}
// Only to com_cpanel
if ($this->app->input->get('option') != 'com_cpanel') {
return false;
}
return true;
}
/**
* Listener for the `onContentPrepare` event
*
* @param string $context The context of the content being passed to the plugin.
* @param object &$article The article object. Note $article->text is also available
* @param object &$params The article params
* @param integer $page The 'page' number
*
* @return void
*
* @since 1.1
*/
public function onContentPrepare($context, &$article, &$params, $page)
{
/*
* Validate the plugin should run in the current context
*/
// Has the plugin already triggered?
if (self::$hasProcessedCategory) {
return;
}
// Context check - This only works for com_content
if (strpos($context, 'com_content') === false) {
self::$hasProcessedCategory = true;
return;
}
// Check if the plugin is enabled
if (JPluginHelper::isEnabled('content', 'joomlarrssb') == false) {
self::$hasProcessedCategory = true;
return;
}
// Make sure the document is an HTML document
$document = $this->app->getDocument();
if ($document->getType() != 'html') {
self::$hasProcessedCategory = true;
return;
}
/*
* Start processing the plugin event
*/
// Set the parameters
$view = $this->app->input->getCmd('view', '');
// Check whether we're displaying the plugin in the current view
if ($this->params->get('view' . ucfirst($view), '1') == '0') {
self::$hasProcessedCategory = true;
return;
}
// The featured view is not yet supported and the article view never will be
if (in_array($view, ['article', 'featured'])) {
self::$hasProcessedCategory = true;
return;
}
// Get the requested category
/** @var JTableCategory $category */
$category = JTable::getInstance('Category');
$category->load($this->app->input->getUint('id'));
// Build the URL for the plugins to use - the site URL should only be the scheme and host segments, JRoute will take care of the rest
$siteURL = JUri::getInstance()->toString(['scheme', 'host', 'port']);
$itemURL = $siteURL . JRoute::_(ContentHelperRoute::getCategoryRoute($category->id));
// Check if there is a category image to use for the metadata
$categoryParams = json_decode($category->params, true);
if (isset($categoryParams['image']) && !empty($categoryParams['image'])) {
$imageURL = $categoryParams['image'];
// If the image isn't prefixed with http then assume it's relative and put the site URL in front
if (strpos($imageURL, 'http') !== 0) {
$imageURL = substr(JUri::root(), 0, -1) . (substr($imageURL, 0, 1) !== '/' ? '/' : '') . $imageURL;
}
if (!$document->getMetaData('og:image')) {
$document->setMetaData('og:image', $imageURL, 'property');
}
if (!$document->getMetaData('twitter:image')) {
$document->setMetaData('twitter:image', $imageURL);
}
}
$description = !empty($category->metadesc) ? $category->metadesc : strip_tags($category->description);
// OpenGraph metadata
if (!$document->getMetaData('og:title')) {
$document->setMetaData('og:title', $category->title, 'property');
}
if (!$document->getMetaData('og:type')) {
$document->setMetaData('og:type', 'article', 'property');
}
if (!$document->getMetaData('og:url')) {
$document->setMetaData('og:url', $itemURL, 'property');
}
// Twitter Card metadata
if (!$document->getMetaData('twitter:title')) {
$document->setMetaData('twitter:title', JHtml::_('string.truncate', $category->title, 70, true, false));
}
// Add the description too if it isn't empty
if (!empty($category->description)) {
if (!$document->getMetaData('og:description')) {
$document->setMetaData('og:description', $description, 'property');
}
if (!$document->getMetaData('twitter:description')) {
$document->setMetaData('twitter:description', $description);
}
}
// We're done here
self::$hasProcessedCategory = true;
}
/**
* 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);
}
