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socialmeta.php
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socialmeta.php
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<?php
/**
* @package Joomla.Plugin
* @subpackage System.Socialmeta
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @copyright Copyright (C) 2016 Emmanuel Danan. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
* @TODO Rewrite most of this creating an overridable meta object containing all the names/properties
* @TODO Allow the form to be triggered from com_categories & com_menus
*/
defined('_JEXEC') or die;
use Joomla\CMS\Factory;
use Joomla\CMS\Table\Table;
use Joomla\CMS\Language\Text;
version_compare(JVERSION, '4.0', 'lt')
? require_once JPATH_SITE . '/components/com_content/helpers/route.php'
: require_once JPATH_SITE . '/components/com_content/src/Helper/RouteHelper.php';
/**
* Joomla! Socialmeta plugin.
*
* @since 1.0
*/
#[AllowDynamicProperties] //php8.2 compatibility
class PlgSystemSocialmeta extends JPlugin
{
protected $defaultimage = '';
protected $fbappid = '';
protected $facebookmeta_auth = '';
protected $facebookmeta_pub = '';
protected $facebookmeta_twittersite = '';
protected $facebookmeta_googleplus = '';
protected $facebookmeta_googlepluslogo = '';
protected $facebookmeta_admin = '';
protected $facebookmeta_titlelimit = '';
protected $facebookmeta_desclimit = '';
protected $facebookmeta_article_image = '';
protected $flexicontent_image_field = '';
protected $flexicontent_imagesize_field = '';
protected $db;
protected $autoloadLanguage = true;
private $app;
/**
* Constructor.
*
* @param object &$subject The object to observe.
* @param array $config An optional associative array of configuration settings.
*
* @throws Exception
* @since 1.0
*
*/
public function __construct(&$subject, $config)
{
parent::__construct($subject, $config);
// Set some vars...
$this->defaultimage = $this->params->get('facebookmeta_defaultimage', '');
$this->fbappid = $this->params->get('facebookmeta_appid', '');
$this->facebookmeta_auth = $this->params->get('facebookmeta_default_userid', '');
$this->facebookmeta_pub = $this->params->get('facebookmeta_pageid', '');
$this->facebookmeta_twittersite = $this->params->get('facebookmeta_twittersite', '');
$this->facebookmeta_googleplus = $this->params->get('facebookmeta_googleplus', '');
$this->facebookmeta_googlepluslogo = $this->params->get('facebookmeta_googlepluslogo', '');
$this->facebookmeta_admin = $this->params->get('facebookmeta_appadmin', '');
$this->facebookmeta_titlelimit = $this->params->get('facebookmeta_titlelimit', 68);
$this->facebookmeta_desclimit = $this->params->get('facebookmeta_desclimit', 200);
$this->facebookmeta_article_image = $this->params->get('facebookmeta_article_image', 2);
$this->flexicontent_image_field = $this->params->get('facebookmeta_flexicontent_image_field', '');
$this->flexicontent_imagesize_field = $this->params->get('facebookmeta_flexicontent_imagesize_field', 'medium');
// Get the application if not done by JPlugin. This may happen during upgrades from Joomla 2.5.
$this->app = $this->app ?? JFactory::getApplication();
// Is superadmin Flag
$this->isSuperAdmin = JFactory::getUser()->authorise('core.admin', 'root.1');
// Is debug Flag
$this->debug = JDEBUG || $this->isSuperAdmin;
}
/**
* Add the facebook/linkedin fix.
* It disable the gzip compression for both user agents
*
* Found in SocialMetaTags plugin https://github.com/hans2103/pkg_SocialMetaTags
* Borrowed from https://github.com/dgt41/facebookfix
*
* @return void
*
* @since 1.1
*/
function onAfterRoute()
{
if ($this->app->isClient('administrator'))
{
return;
}
$unsupported = false;
if (isset($_SERVER['HTTP_USER_AGENT']))
{
/* Facebook User Agent
* facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)
* LinkedIn User Agent
* LinkedInBot/1.0 (compatible; Mozilla/5.0; Jakarta Commons-HttpClient/3.1 +http://www.linkedin.com)
*/
$pattern = strtolower('/facebookexternalhit|LinkedInBot/x');
if (preg_match($pattern, strtolower($_SERVER['HTTP_USER_AGENT'])))
{
$unsupported = true;
}
}
if (($this->app->get('gzip') == 1) && $unsupported)
{
$this->app->set('gzip', 0);
}
}
/**
* Add the metatags.
*
* @return void|bool
*
* @throws Exception
* @since 1.0
*/
public function onBeforeCompileHead()
{
// Common API instances
$document = JFactory::getDocument();
$config = JFactory::getConfig();
$jinput = JFactory::getApplication()->input;
$lang = JFactory::getLanguage();
// Common view DATA (component and view names)
$option = $jinput->get('option', '', 'CMD');
$view = $jinput->get('view', '', 'CMD');
// For views that have custom VIEW and custom ID ...
$view_actual = $jinput->get('view_actual', '', 'CMD');
$id_actual = (int) $jinput->get('id_actual', '', 'CMD');
$view = $view_actual ?: $view;
/**
* Add some JS to the forms and Exclude meta creation in the Admin
*/
if ($this->app->isClient('administrator'))
{
// A small test to integrate a character counter for the title
$script = "jQuery(document).ready(function($){
$('#jform_attribs_facebookmeta_title, #jform_params_facebookmeta_title').characterCounter({
limit: " . $this->facebookmeta_titlelimit . ",
counterFormat: '%1 " . Text::_('PLG_SYSTEM_SOCIALMETA_CHARSLEFT') . "'
});
$('#jform_attribs_facebookmeta_desc, #jform_params_facebookmeta_desc').characterCounter({
limit: " . $this->facebookmeta_desclimit . ",
counterFormat: '%1 " . Text::_('PLG_SYSTEM_SOCIALMETA_CHARSLEFT') . "'
});
});
";
$document->addScript(JURI::root(true) . '/plugins/system/socialmeta/js/jquery.charactercounter.js');
$document->addScriptDeclaration($script);
// css to style the counter
$css = "
span.exceeded { color: #E00B0B; }
.counter { padding-left: 15px; font-size: 11px; }
.media-body { padding-left: 15px; }
#videoscreen { background-image: url(../plugins/system/socialmeta/img/screen-mini.png); width:300px; height:246px; float: left; }
#videoscreen img { padding: 11px 0 0 11px !important; width: 278px !important; height: 157px !important; }
";
$document->addStyleDeclaration($css);
return true;
}
/**
* Don't process meta on non-HTML formats, e.g. RSS feeds
*/
if ($jinput->get('format', 'html', 'CMD') !== 'html')
{
return true;
}
/**
* Check current component - view pair is supported
*/
$viewConfig = $this->_loadXmlConfig($option, $view);
if (!$viewConfig)
{
return true;
}
/**
* Create google microdata
*/
$googledata = new StdClass();
$googledata->{'@context'} = 'http://schema.org/';
$googledata->{'@type'} = (string) $viewConfig->microdata->attributes()['type']; // TODO modify this to use microdata per flexicontent type
// Add Google structured data for publishers
if (!empty($this->facebookmeta_googleplus))
{
$googledata->publisher = new StdClass();
$googledata->publisher->{'@type'} = 'Organization';
$googledata->publisher->name = $this->facebookmeta_googleplus;
}
if (!empty($this->facebookmeta_googlepluslogo) && $size = @ getimagesize(JPath::clean(JPATH_SITE . '/' . $this->facebookmeta_googlepluslogo)))
{
$googledata->publisher->logo = new StdClass();
$googledata->publisher->logo->{'@type'} = 'ImageObject';
$googledata->publisher->logo->url = JURI::base() . $this->facebookmeta_googlepluslogo;
$googledata->publisher->logo->width = $size[0];
$googledata->publisher->logo->height = $size[1];
$googledata->publisher->logo->fileFormat = $size['mime'];
}
/**
* Find the language code of your page
*/
$locale = JPluginHelper::isEnabled('system', 'languagecode')
? $this->getNewLanguageCode($lang->getTag())
: $lang->getTag();
$locale = str_replace('-', '_', $locale);
/**
* We initialize the meta image property with the default image if set - (plugin configuration)
*/
if ($this->defaultimage && $size = @ getimagesize(JPath::clean(JPATH_SITE . '/' . $this->defaultimage)))
{
$metaimage = '<meta property="og:image" content="' . JURI::base() . $this->defaultimage . '" />';
$metaimagetw = '<meta name="twitter:image" content="' . JURI::base() . $this->defaultimage . '" />';
$metaimagewidth = '<meta property="og:image:width" content="' . $size[0] . '" />';
$metaimageheight = '<meta property="og:image:height" content="' . $size[1] . '" />';
$metaimagemime = '<meta property="og:image:type" content="' . $size['mime'] . '" />';
$googledata->image = new StdClass();
$googledata->image->{'@type'} = 'ImageObject';
$googledata->image->url = JURI::base() . $this->defaultimage;
$googledata->image->width = $size[0];
$googledata->image->height = $size[1];
$googledata->image->fileFormat = $size['mime'];
}
/**
* We initialize other meta data if set - (plugin configuration)
*/
$metaurl = '<meta property="og:url" content="' . JURI::getInstance()->toString() . '" />';
$googledata->mainEntityOfPage = JURI::current();
$metatype = '<meta property="og:type" content="article" />';
//$metatypetw = '<meta name="twitter:card" content="summary_large_image" />'; // THIS IS NOT WORKING, use line below
$metatypetw = '<meta name="twitter:card" content="summary" />';
$metasitename = '<meta property="og:site_name" content="' . $config->get('sitename') . '" />';
$metalocale = '<meta property="og:locale" content="' . $locale . '" />';
$googledata->inLanguage = $lang->getTag();
$metafbappid = $this->fbappid ? '<meta property="fb:app_id" content="' . $this->fbappid . '" />' : '';
$metafbadmins = $this->facebookmeta_admin ? '<meta property="fb:admins" content="' . $this->facebookmeta_admin . '" />' : '';
/**
* Default handler, handles com_content.article, com_flexicontent.item and standard pattern views ...
*/
$is_com_content = ($option == 'com_content' && $view == 'article') || ($option == 'com_flexicontent' && $view == 'item');
$use_default_handler = $is_com_content || true; // ... TODO examine more
if ($use_default_handler)
{
// Component - View context and ID of record
$context = $option . '.' . $view;
$id = (int) $jinput->get('id', '', 'CMD');
// For views that have custom ID ...
$id = $id_actual ?: $id;
// Tags context, J-Table name, J-Table prefix
$tags_context = $is_com_content ? 'com_content.content' : $context;
$jtable = (string) $viewConfig->dbdata->attributes()['jtable'];
$prefix = (string) $viewConfig->dbdata->attributes()['prefix'];
// Load item and category data from correct j-table
Table::addIncludePath(JPATH_ADMINISTRATOR . '/component/' . $option . '/tables');
$article = $this->getObjectContent($id, $jtable, $prefix);
if (!$article) return;
//echo '<pre>'; print_r($article); exit;
// Get category but do not abort if none
$category = !empty($article->catid) ? $this->getObjectContent($article->catid, 'category') : false;
//if (!$category) return;
// Non com-content components use description field
$title_dbcol = (string) $viewConfig->title->attributes()['dbcolumn'];
$introtext_dbcol = (string) $viewConfig->introtext->attributes()['dbcolumn'];
$fulltext_dbcol = (string) $viewConfig->fulltext->attributes()['dbcolumn'];
$image_conf = $viewConfig->image;
$image_dbcol = !empty($image_conf) ? (string) $image_conf->attributes()['dbcolumn'] : false;
$image_srcprop = !empty($image_conf) ? (string) $image_conf->attributes()['sourceproperty'] : false;
$image_isjson = !empty($image_conf) ? (int) $image_conf->attributes()['isjson'] : 0;
$image_ismultiple = !empty($image_conf) ? (int) $image_conf->attributes()['ismultiple'] : 0;
$article_title = $article->{$title_dbcol};
$article_introtext = $article->{$introtext_dbcol};
$article_fulltext = $article->{$fulltext_dbcol};
$article_image = $image_dbcol ? $article->{$image_dbcol} : false;
// Get item's category and (for com-content only) decode json of (intro/full)-text images
$images = $is_com_content ? json_decode($article->images) : (object)['image_fulltext'=>'', 'image_intro'=>''];
// Logic and pattern partially borrowed from SocialMetaTags plugin https://github.com/hans2103/pkg_SocialMetaTags
$facebookmeta_image = '';
if ($this->facebookmeta_article_image != 0)
{
/**
* Get img tag from article description text(s)
* Priority (high to low): [0] via configuration, [1] (intro/full)-text images (com-content only), [2] introtext, [3] fulltext
*/
// [0]
if ($article_image)
{
$facebookmeta_image = $image_isjson ? json_decode($article_image, true) : $article_image;
$facebookmeta_image = $facebookmeta_image && $image_ismultiple ? reset($facebookmeta_image) : $facebookmeta_image;
$facebookmeta_image = $facebookmeta_image && $image_srcprop ? $facebookmeta_image[$image_srcprop] : $facebookmeta_image;
}
// [1]
if (!$facebookmeta_image)
{
$facebookmeta_image = $this->facebookmeta_article_image == 2 && !empty($images->image_fulltext) ? $images->image_fulltext : $facebookmeta_image;
$facebookmeta_image = $this->facebookmeta_article_image == 1 && !empty($images->image_intro) ? $images->image_intro : $facebookmeta_image;
}
// [2]
if (!$facebookmeta_image && strpos($article_introtext, '<img') !== false)
{
preg_match('/(?<!_)src=([\'"])?(.*?)\\1/', $article_introtext, $articleimages);
$facebookmeta_image = $articleimages[2];
}
// [3]
if (!$facebookmeta_image && strpos($article_fulltext, '<img') !== false)
{
// Get img tag from article
preg_match('/(?<!_)src=([\'"])?(.*?)\\1/', $article_fulltext, $articleimages);
$facebookmeta_image = $articleimages[2];
}
}
// Add the tags to the article object
if (!empty($article->id))
{
$article->tags = new JHelperTags;
$article->tags->getItemTags($tags_context, $article->id);
}
// Get current record data
// NOTE: Current item attributes will be empty if the edit form has not been saved after the plugin was installed and enabled
$form_fields_group = $viewConfig->form->attributes()['fields_group'] ?? false;
try {
$attribs = $form_fields_group ? json_decode($article->{$form_fields_group}) : false;
} catch (\Throwable $e){
$attribs = new stdClass();
}
// we set the article type as default type if no data is provided
$facebookmeta_ogtype = @$attribs->facebookmeta_og_type ? $attribs->facebookmeta_og_type : "article";
$facebookmeta_image = !empty($attribs->facebookmeta_image) ? $attribs->facebookmeta_image : $facebookmeta_image;
$facebookmeta_title = @$attribs->facebookmeta_title;
$facebookmeta_desc = @$attribs->facebookmeta_desc;
$facebookmeta_author = $this->getUserFacebookProfile($article->created_by);
$facebookmeta_authortw = $this->getUserTwitterProfile($article->created_by);
$facebookmeta_seealso1 = @$attribs->facebookmeta_seealso1;
$facebookmeta_seealso2 = @$attribs->facebookmeta_seealso2;
$facebookmeta_seealso3 = @$attribs->facebookmeta_seealso3;
$facebookmeta_video = @$attribs->facebookmeta_video;
$facebookmeta_video_secure_url = @$attribs->facebookmeta_video_secure_url;
$facebookmeta_video_type = @$attribs->facebookmeta_video_type;
$facebookmeta_video_width = @$attribs->facebookmeta_video_width;
$facebookmeta_video_height = @$attribs->facebookmeta_video_height;
// Check image is absolute url
$facebookmeta_image_is_abs = (boolean) parse_url($facebookmeta_image, PHP_URL_SCHEME); // preg_match("#^http|^https#i", $facebookmeta_image);
// Check image is local site
$facebookmeta_image_is_local = !$facebookmeta_image_is_abs || strpos($facebookmeta_image, JURI::base()) === 0;
// Get full image url and full image file path, if external URL then we use the URL itself as file path getimagesize() supports this
if ($facebookmeta_image && $facebookmeta_image_is_local)
{
$facebookmeta_image_url = $facebookmeta_image_is_abs ? $facebookmeta_image : JURI::base() . $facebookmeta_image;
$facebookmeta_image_file = $facebookmeta_image_is_abs
? str_replace(JURI::base(), JPATH_SITE . '/', $facebookmeta_image)
: JPATH_SITE . '/' . $facebookmeta_image;
}
else
{
$facebookmeta_image_file = $facebookmeta_image;
$facebookmeta_image_url = $facebookmeta_image;
}
// !! Do not try to get size of external image URLs to avoid random long delays
$size = $facebookmeta_image_file && $facebookmeta_image_is_local ? @ getimagesize(JPath::clean($facebookmeta_image_file)) :false;
// We have to set the article sharing image https://developers.facebook.com/docs/sharing/best-practices#images
if ($facebookmeta_image_url)
{
$metaimage = '<meta property="og:image" content="' . $facebookmeta_image_url . '" />';
$metaimagetw = '<meta name="twitter:image" content="' . $facebookmeta_image_url . '" />';
$metaimagewidth = $size ? '<meta property="og:image:width" content="' . $size[0] . '" />' : '';
$metaimageheight = $size ? '<meta property="og:image:height" content="' . $size[1] . '" />' : '';
$metaimagemime = $size ? '<meta property="og:image:type" content="' . $size['mime'] . '" />' : '';
$googledata->image = new StdClass();
$googledata->image->{'@type'} = 'ImageObject';
$googledata->image->url = $facebookmeta_image_url;
if ($size)
{
$googledata->image->width = $size[0];
$googledata->image->height = $size[1];
$googledata->image->fileFormat = $size['mime'];
}
}
$metaupdated = $article->modified
? '<meta property="og:updated_time" content="' . $this->to8601($article->modified) . '" />' : '';
$metaauth = $this->facebookmeta_auth
? '<meta property="article:author" content="' . ($facebookmeta_author ? $facebookmeta_author : $this->facebookmeta_auth) . '" />'
//. "\n" . ' <meta content="' . ($facebookmeta_author ? $facebookmeta_author : $this->facebookmeta_auth) . '" property="author" >'
: '';
$googledata->author = new StdClass();
$googledata->author->{'@type'} = 'Person';
$googledata->author->name = !empty($article->created_by_alias) ? $article->created_by_alias : $this->getUserName($article->created_by);
$metaauthtw = $this->facebookmeta_twittersite
? '<meta name="twitter:site" content="' . ($facebookmeta_authortw ? $facebookmeta_authortw : $this->facebookmeta_twittersite) . '" />' : '';
$metapublisher = $this->facebookmeta_pub
? '<meta property="article:publisher" content="' . $this->facebookmeta_pub . '" />' : '';
$metasection = $category ? '<meta property="article:section" content="' . $category->title . '" />' : '';
$googledata->articleSection = $category ? $category->title : '';
$metapub = array();
$metapub['modified'] = '<meta property="article:modified_time" content="' . $this->to8601($article->modified) . '" />';
$googledata->dateModified = $this->to8601($article->modified);
$article->publish_up = !empty($article->publish_up) && $article->publish_up != '0000-00-00 00:00:00'
? $article->publish_up
: (!empty($article->created) ? $article->created : '');
$metapub['publish_up'] = '<meta property="article:published_time" content="' . $this->to8601($article->publish_up) . '" />'
//. "\n" . ' <meta content="' . $this->to8601($article->publish_up) . '" property="pubdate">'
;
$googledata->datePublished = $this->to8601($article->publish_up);
if (!empty($article->publish_down) && $article->publish_down != '0000-00-00 00:00:00')
{
$metapub['publish_down'] = '<meta property="article:expiration_time" content="' . $this->to8601($article->publish_down) . '" />';
}
if (!empty($article->tags->itemTags))
{
$metatags = array();
$articletags = array();
foreach ($article->tags->itemTags as $tag)
{
$metatags[] = '<meta property="article:tag" content="' . $tag->title . '" />';
$articletags[] = $tag->title;
}
$googledata->keywords = implode(',', $articletags);
}
if ($facebookmeta_seealso1)
{
$metaseealso1 = '<meta property="og:see_also" content="' . JURI::base() . substr(JRoute::_(ContentHelperRoute::getArticleRoute($facebookmeta_seealso1, $article->catid)), strlen(JURI::base(true)) + 1) . '" />';
}
if ($facebookmeta_seealso2)
{
$metaseealso2 = '<meta property="og:see_also" content="' . JURI::base() . substr(JRoute::_(ContentHelperRoute::getArticleRoute($facebookmeta_seealso2, $article->catid)), strlen(JURI::base(true)) + 1) . '" />';
}
if ($facebookmeta_seealso3)
{
$metaseealso3 = '<meta property="og:see_also" content="' . JURI::base() . substr(JRoute::_(ContentHelperRoute::getArticleRoute($facebookmeta_seealso3, $article->catid)), strlen(JURI::base(true)) + 1) . '" />';
}
// We create the video object if video link has been provided
if ($facebookmeta_video)
{
$url_scheme = parse_url($facebookmeta_video, PHP_URL_SCHEME); // hhtp || https
$metavideo = $facebookmeta_video ? '<meta property="og:video" content="' . htmlentities($facebookmeta_video) . '" />' : "";
$metavideotw = $facebookmeta_video ? '<meta name="twitter:player" content="' . htmlentities($facebookmeta_video) . '" />' : "";
$metavideotype = ($facebookmeta_video_type == ("application/x-shockwave-flash" || "video/mp4")) ? '<meta property="og:video:type" content="' . $facebookmeta_video_type . '" />' : "";
$metavideoheight = ((int) $facebookmeta_video_height != 0) ? '<meta property="og:video:height" content="' . $facebookmeta_video_height . '" />' : "";
$metavideoheighttw = ((int) $facebookmeta_video_height != 0) ? '<meta name="twitter:player:height" content="' . $facebookmeta_video_height . '" />' : "";
$metavideowidth = ((int) $facebookmeta_video_width != 0) ? '<meta property="og:video:width" content="' . $facebookmeta_video_width . '" />' : "";
$metavideowidthtw = ((int) $facebookmeta_video_width != 0) ? '<meta name="twitter:player:width" content="' . $facebookmeta_video_width . '" />' : "";
if ($metavideotype && $metavideoheight && $metavideowidth)
{
if ($url_scheme == "https")
{ // && type == should be treated as a video object
$metavideosecureourl = '<meta property="og:video:secure_url" content="' . htmlentities($facebookmeta_video_secure_url ? $facebookmeta_video_secure_url : $facebookmeta_video) . '" />';
if ($facebookmeta_ogtype == "video")
{
// && type == should be treated as a video object
$metatype = '<meta property="og:type" content="video" />';
$metatypetw = '<meta name="twitter:card" content="player" />';
}
}
else
{
$metavideosecureourl = "";
}
}
}
// We use the title of the article if none is provided
if ($facebookmeta_title)
{
$metatitle = '<meta property="og:title" content="' . $this->striptagsandcut($facebookmeta_title) . '" />';
$metattitletw = '<meta name="twitter:title" content="' . $this->striptagsandcut($facebookmeta_title) . '" />';
$googledata->headline = $this->striptagsandcut($facebookmeta_title);
$googledata->name = $this->striptagsandcut($facebookmeta_title);
}
else
{
$metatitle = '<meta property="og:title" content="' . $this->striptagsandcut($article_title, $this->facebookmeta_titlelimit) . '" />';
$metattitletw = '<meta name="twitter:title" content="' . $this->striptagsandcut($article_title, $this->facebookmeta_titlelimit) . '" />';
$googledata->headline = $this->striptagsandcut($this->striptagsandcut($article_title, $this->facebookmeta_titlelimit));
$googledata->name = $this->striptagsandcut($this->striptagsandcut($article_title, $this->facebookmeta_titlelimit));
}
// We use the introtext or description field if none is provided
if ($facebookmeta_desc)
{
$metadesc = '<meta property="og:description" content="' . $this->striptagsandcut($facebookmeta_desc) . '" />';
$metadesctw = '<meta name="twitter:description" content="' . $this->striptagsandcut($facebookmeta_desc) . '" />';
$googledata->description = $this->striptagsandcut($facebookmeta_desc);
}
elseif (!empty($article->metadesc))
{
$metadesc = '<meta property="og:description" content="' . $this->striptagsandcut($article->metadesc) . '" />';
$metadesctw = '<meta name="twitter:description" content="' . $this->striptagsandcut($article->metadesc) . '" />';
$googledata->description = $this->striptagsandcut($article->metadesc);
}
else
{
$metadesc = '<meta property="og:description" content="' . $this->striptagsandcut($article_introtext, $this->facebookmeta_desclimit) . '" />';
$metadesctw = '<meta name="twitter:description" content="' . $this->striptagsandcut($article_introtext, $this->facebookmeta_desclimit) . '" />';
$googledata->description = $this->striptagsandcut($article_introtext, $this->facebookmeta_desclimit);
}
// com_flexicontent specific routine to overrride image
if (($option == 'com_flexicontent' && $view == 'item'))
{
if ($this->flexicontent_image_field)
{
$image_field = $this->getFCfieldname($this->flexicontent_image_field);
require_once(JPATH_SITE . DS . 'components' . DS . 'com_flexicontent' . DS . 'classes' . DS . 'flexicontent.fields.php');
$thumb_size = $this->flexicontent_imagesize_field;
$thumbs_arr =
FlexicontentFields::renderFields(
$item_per_field = true,
$itemids = array($article->id),
$field_names = array($image_field),
$view = 'item',
$field_methods = array('display_' . $thumb_size . '_src'),
$cfparams = array()
);
$thumb = $thumbs_arr[$article->id][$image_field]['display_' . $thumb_size . '_src'];
if (!empty($thumb) && $size = @ getimagesize(JPath::clean(JPATH_SITE . '/' . substr($thumb, strlen(JURI::base(true)) + 1))))
{
// Override the og:image properties
$metaimage = '<meta property="og:image" content="' . JURI::base() . substr($thumb, strlen(JURI::base(true)) + 1) . '" />';
$metaimagetw = '<meta name="twitter:image" content="' . JURI::base() . substr($thumb, strlen(JURI::base(true)) + 1) . '" />';
$metaimagewidth = '<meta property="og:image:width" content="' . $size[0] . '" />';
$metaimageheight = '<meta property="og:image:height" content="' . $size[1] . '" />';
$metaimagemime = '<meta property="og:image:type" content="' . $size['mime'] . '" />';
$googledata->image = new StdClass();
$googledata->image->{'@type'} = 'ImageObject';
$googledata->image->url = JURI::base() . substr($thumb, strlen(JURI::base(true)) + 1);
$googledata->image->width = $size[0];
$googledata->image->height = $size[1];
$googledata->image->fileFormat = $size['mime'];
}
}
}
}
$document->addCustomTag('<!-- BOF Socialmeta plugin for Joomla! https://github.com/vistamedia/socialmeta -->');
if ($this->params->get('structureddata', 1))
{
$document->addCustomTag('<!-- Google structured data -->');
$document->addCustomTag('<script type="application/ld+json">' . json_encode($googledata) . '</script>');
}
// og:site_name
if ($this->params->get('og_site_name', 1))
{
$document->addCustomTag('<!-- og common meta -->');
$document->addCustomTag($metasitename);
}
// og:type
if ($this->params->get('og_type', 1))
{
$document->addCustomTag($metatype);
}
// og:url
if ($this->params->get('og_url', 1))
{
$document->addCustomTag($metaurl);
}
// og:locale
if ($this->params->get('og_locale', 1))
{
$document->addCustomTag($metalocale);
}
// og:title
if ($this->params->get('og_title', 1))
{
$document->addCustomTag($metatitle);
}
// og:description
if ($this->params->get('og_description', 1))
{
$document->addCustomTag($metadesc);
}
// og:updated_time
if ($this->params->get('og_updated_time', 1))
{
$document->addCustomTag($metaupdated);
}
// og:image
if ($this->params->get('og_image', 1) && @$metaimage)
{
$document->addCustomTag($metaimage);
if (!empty($metaimagetw)) $document->addCustomTag($metaimagetw);
// og:image:width
$document->addCustomTag($metaimagewidth);
// og:image:height
$document->addCustomTag($metaimageheight);
// og:image:type
$document->addCustomTag($metaimagemime);
}
// og:video (has sub-properties)
if ($this->params->get('og_video', 1))
{
if (@$metavideo)
{
$document->addCustomTag($metavideo);
}
if (@$metavideosecureourl)
{
$document->addCustomTag($metavideosecureourl);
}
if (@$metavideotype)
{
$document->addCustomTag($metavideotype);
}
if (@$metavideowidth)
{
$document->addCustomTag($metavideowidth);
}
if (@$metavideoheight)
{
$document->addCustomTag($metavideoheight);
}
}
// og:see_also (array)
if ($this->params->get('og_see_also', 1))
{
if (@$metaseealso1)
{
$document->addCustomTag($metaseealso1);
}
if (@$metaseealso2)
{
$document->addCustomTag($metaseealso2);
}
if (@$metaseealso3)
{
$document->addCustomTag($metaseealso3);
}
}
if ($facebookmeta_ogtype == "article")
{
$document->addCustomTag('<!-- og:article specific meta -->');
// article:author
if ($this->params->get('article_author', 1))
{
$document->addCustomTag(@$metaauth);
}
// article:publisher
if ($this->params->get('article_publisher', 1))
{
$document->addCustomTag(@$metapublisher);
}
// article:modified_time || article:published_time || article:expiration_time
if ($this->params->get('article_published_time', 1))
{
foreach ($metapub as $m)
{
$document->addCustomTag($m);
}
}
// article:section
if ($this->params->get('article_section', 1))
{
$document->addCustomTag($metasection);
}
// article:tag (array)
if ($this->params->get('article_tag', 1))
{
if (@$metatags)
{
foreach ($metatags as $metatag)
{
$document->addCustomTag($metatag);
}
}
}
}
// fb:app_id
if ($this->params->get('fb_app_id', 1))
{
$document->addCustomTag('<!-- Facebook specific -->');
$document->addCustomTag($metafbappid);
}
// fb:admins
if ($this->params->get('fb_admins', 1))
{
$document->addCustomTag($metafbadmins);
}
// twitter:card
if ($this->params->get('twitter_card', 1))
{
$document->addCustomTag('<!-- Twitter Specific -->');
$document->addCustomTag($metatypetw);
$document->addCustomTag($metattitletw);
$document->addCustomTag($metadesctw);
if (!empty($metaimagetw)) $document->addCustomTag($metaimagetw);
}
// twitter:site
if ($this->params->get('twitter_site', 1))
{
$document->addCustomTag($metaauthtw);
}
// twitter:video
if ($facebookmeta_ogtype == "video")
{
if ($this->params->get('twitter_video', 1))
{
if ($metavideo)
{
$document->addCustomTag($metavideotw);
}
if ($metavideowidth)
{
$document->addCustomTag($metavideowidthtw);
}
if ($metavideoheight)
{
$document->addCustomTag($metavideoheighttw);
}
}
}
$document->addCustomTag('<!-- EOF Socialmeta plugin for Joomla! https://github.com/vistamedia/socialmeta -->');
}
/**
* Get the modified language code (URL segment) if the languagecode plugin is enabled
*
* @param string $tag the language tag
*
* @return string the modified language tag (used as URL segment)
*
* @since 1.1
*/
private function getNewLanguageCode($tag = 'en-GB')
{
$db = JFactory::getDBO();
// Load language parameters
$params = $db->setQuery($db->getQuery(true)
->select('params')
->from($db->quoteName('#__extensions'))
->where($db->quoteName('name') . " = " . $db->quote('plg_system_languagecode'))
)->loadResult();
// Parse the parameters
$lcparams = new JRegistry($params);
// Return the modified language tag (used as URL segment) (if it exists, otherwise return the given tag)
return $lcparams->get(strtolower($tag)) ?: $tag;
}
/**
* Method to retrieve the main data object of a component.
*
* @param int $id
* @param string $table
* @param string $prefix
*
* @return object.
*
* @since 1.0
*/
private function getObjectContent($id, $table = 'content', $prefix = 'JTable')
{
// Load record data
$dataobject = Table::getInstance($table, $prefix);
$dataobject ? $dataobject->load($id) : false;
if ($this->debug && !$dataobject)
{
JFactory::getApplication()->enqueueMessage('socialmeta plg: Could not load JTable: ' . $prefix.$table, 'notice');
}
return $dataobject;
}
/**
* Returns the Facebook profile stored in the contact
*
* @TODO : getExternalProperties(userid,property)
*
* @param int $userid
*
* @return string Facebook profile URL of the user
* @since 1.0
*/
private function getUserFacebookProfile($userid)
{
$db = JFactory::getDbo();
// Load user parameters of given user id
$userparams = $db->setQuery($db->getQuery(true)
->select('params')
->from($db->quoteName('#__contact_details'))
->where($db->quoteName('user_id') . " = " . $db->quote($userid))
)->loadResult();
// Decode them
$userparams = $userparams ? json_decode($userparams) : false;
// Return the Facebook profile URL (if it exists, otherwise empty)
return $userparams
? (!empty($userparams->facebookmeta_fbuserprofile) ? $userparams->facebookmeta_fbuserprofile : '')
: '';
}
/**
* Returns the Twitter profile stored in the contact
*
* @TODO : getExternalProperties(userid,property)
*
* @param int $userid
*
* @return string Twitter profile URL of the user
* @since 1.0
*/
private function getUserTwitterProfile($userid)
{
$db = JFactory::getDbo();
// Load user parameters of given user id
$userparams = $db->setQuery($db->getQuery(true)
->select('params')
->from($db->quoteName('#__contact_details'))
->where($db->quoteName('user_id') . " = " . $db->quote($userid))
)->loadResult();
// Decode them
$userparams = $userparams ? json_decode($userparams) : false;
// Return the Twitter profile URL (if it exists, otherwise empty)
return $userparams
? (!empty($userparams->facebookmeta_twitteruser) ? $userparams->facebookmeta_twitteruser : '')
: '';
}
/**
* Returns a formated ISO8601 date
*
* @param string $datetime
*
* @return string
* @since 1.0
*/
private function to8601($datetime)
{
$date = new DateTime($datetime);
return $date->format(DateTime::ISO8601);
}
/**
* Returns the name of a user
*
* @TODO : getExternalProperties(userid,property)
*
* @param int $userid
*
* @return string Facebook profile URL of the user
* @since 1.0
*/
private function getUserName($userid)
{
$db = JFactory::getDbo();
return $db->setQuery($db->getQuery(true)
->select('name')
->from($db->quoteName('#__users'))
->where($db->quoteName('id') . " = " . $db->quote($userid))
)->loadResult();
}
/**
* Strip html tags and cut after x characters
* Borrowed from FLEXIcontent www.flexicontent.org
*
* @param string $text
* @param int $nb
*
* @return string
* @since 1.0
*/
private function striptagsandcut($text, $chars = null, &$uncut_length = 0)
{
// Convert html entities to characters so that they will not be removed ... by strip_tags
$text = html_entity_decode($text, ENT_NOQUOTES, 'UTF-8');
// Strip SCRIPT tags AND their containing code
$text = preg_replace('#<script\b[^>]*>(.*?)<\/script>#is', '', $text);
// Add whitespaces at start/end of tags so that words will not be joined,
//$text = preg_replace('/(<\/[^>]+>((?!\P{L})|(?=[0-9])))|(<[^>\/][^>]*>)/u', ' $1', $text);
$text = preg_replace('/(<\/[^>]+>(?![\:|\.|,|:|"|\']))|(<[^>\/][^>]*>)/u', ' $1', $text);
// Strip html tags
$cleantext = strip_tags($text);
// clean additionnal plugin tags
$patterns = array();
$patterns[] = '#\[(.*?)\]#';
$patterns[] = '#{(.*?)}#';
$patterns[] = '#&(.*?);#';
foreach ($patterns as $pattern)
{
$cleantext = preg_replace($pattern, '', $cleantext);
}
// Replace multiple spaces, tabs, newlines, etc with a SINGLE whitespace so that text length will be calculated correctly
$cleantext = preg_replace('/[\p{Z}\s]{2,}/u', ' ', $cleantext); // Unicode safe whitespace replacing
// Calculate length according to UTF-8 encoding
$uncut_length = \Joomla\String\StringHelper::strlen($cleantext);
// Cut off the text if required but reencode html entities before doing so
if ($chars)
{
if ($uncut_length > $chars)
{
$cleantext = \Joomla\String\StringHelper::substr($cleantext, 0, $chars) . '...';
}
}
// Reencode HTML special characters, (but do not encode UTF8 characters)
$cleantext = htmlspecialchars($cleantext, ENT_QUOTES, 'UTF-8');
return $cleantext;
}
/**
* Check if the image field is an image and is published
*
* @param string $fieldname
*
* @return void true on success
*
* @since 1.0