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<?php
/**
* Project: 4SEO
*
* @author Yannick Gaultier - Weeblr llc
* @copyright Copyright Weeblr llc - 2020-2024
* @package 4SEO
* @license GNU General Public License version 3; see LICENSE.md
* @version 6.2.0.2478
* @date 2024-10-03
*/
use Joomla\CMS\Plugin;
use Joomla\CMS\Uri\Uri;
use Weeblr\Wblib\Forseo\Wb;
use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\String\StringHelper as JoomlaStringHelper;
use Weeblr\Wblib\Forseo\Joomla\StringHelper\StringHelper;
defined('_JEXEC') or die;
/**
* Handle commercial extension update authorization
*
* @since 2.5
*/
class PlgInstallerForseo extends Plugin\CMSPlugin
{
/**
* @var String base update url, to decide whether to process the event or not
* @since 2.5
*/
private $baseUrl = [
'https://u1.weeblr.com/dist/forseo/full' => 'forseo',
];
/**
* @var String extension identifier, to retrieve its params
* @since 2.5
*/
private $extension = 'pkg_forseo';
/**
* @var String An id for your product, to be used by the web site when deciding to allow access
* Not mandatory, depends on subscription management system
* @since 2.5
*/
private $productId = '';
/**
* @var String An edition type (full, free, lite,...) for the product
* Not mandatory, depends on subscription management system
* @since 2.5
*/
private $productEdition = 'full';
/**
* Handle adding credentials to package download request
*
* @param string $url url from which package is going to be downloaded
* @param array $headers headers to be sent along the download request (key => value format)
*
* @return boolean true always true
*
* @since 2.5
* @throws Exception
*/
public function onInstallerBeforePackageDownload(&$url, &$headers)
{
// are we trying to update our extension?
foreach ($this->baseUrl as $baseUrl => $productId)
{
// cannot use Wb\startsWith() here as this needs
// to run when updating through the CLI, where
// wblib init code (at onAfterRoute) is not executed
if (
!empty($baseUrl)
&&
0 === JoomlaStringHelper::strpos($url, $baseUrl)
)
{
$this->productId = $productId;
break;
}
}
// not one of our URLs.
if (empty($this->productId))
{
return true;
}
// read credentials from extension params or any other source
$credentials = $this->fetchCredentials($url, $headers);
// bind credentials to request, either in the urls, or using headers
// or a combination of both
$this->bindCredentials($credentials, $url, $headers);
return true;
}
/**
* Bind credentials to the download request.
* In Joomla 4, update key is manager by Joomla and added to the URL.
* Prior to J4, we are using a header. Better but not how it was done in J4.
*
* @param array $credentials whatever credentials were retrieved for the current user/website
* @param string $url url from which package is going to be downloaded
* @param array $headers headers to be sent along the download request (key => value format)
*
* @return void
*/
private function bindCredentials($credentials, &$url, &$headers)
{
$headers['X-download-auth-ts'] = time();
$headers['X-download-auth-id'] = $credentials['id'];
$host = Uri::getInstance()->getHost();
$host = preg_replace('/^www\./', '', $host);
$headers['X-wblr-origin'] = sha1($host);
$headers['X-wblr-version-src'] = '6.2.0.2478';
$headers['X-wblr-version-platform'] = \JVERSION;
$headers['X-wblr-product-id'] = $this->productId;
}
/**
* Retrieve user credentials
*
* @param $url
* @param $headers
*
* @return mixed an array with credentials (id, secret), or null if none found
* @throws Exception
*/
private function fetchCredentials($url, $headers)
{
// maybe the key was put in URL already by something like Watchful?
$parsedUrl = parse_url($url, PHP_URL_QUERY);
if (!empty($parsedUrl))
{
$parsedQueryVars = [];
parse_str($parsedUrl, $parsedQueryVars);
// cannot use Wb\arrayGet() here as this needs
// to run when updating through the CLI, where
// wblib init code (at onAfterRoute) is not executed
$urlKey = empty($parsedQueryVars['wblr_k'])
? ''
: $parsedQueryVars['wblr_k'];
if (!empty($urlKey))
{
$credentials = ['id' => $urlKey];
}
}
if (empty($credentials['id']))
{
// fetch credentials from extension parameters
$config = $this->getConfigFromDb(
'forseo',
'system'
);
$credentials = [
'id' => empty($config['dlid'])
? ''
: $config['dlid']
];
$credentials['id'] = trim($credentials['id']);
}
// no update id found, display error
$app = Factory::getApplication();
if (
empty($credentials['id'])
&&
$app->isClient('administrator')
)
{
$this->loadLanguage();
$app->enqueueMessage(
Text::sprintf(
'PLG_INSTALLER_FORSEO_UPDATE_NO_CREDENTIALS',
'https://weeblr.com/doc/products.forseo/current/getting-started/installation-update/'
),
'error'
);
$app->redirect('index.php?option=com_installer&view=update');
}
return $credentials;
}
/**
* Read from the #__forsef_config table the system config
* and decode it from json to an array.
*
* @return array
*/
private function getConfigFromDb($extension, $key)
{
try
{
$db = $this->getPlatformDb();
$query = $db->getQuery(true)
->select('value')
->from($db->qn('#__' . $extension . '_config'))
->where($db->qn('key') . '=' . $db->q($key));
$json = $db->setQuery($query)
->loadResult();
return (array)json_decode($json, true);
}
catch (Exception $e)
{
return [];
}
}
/**
* Wrapper to get the platform DB object regardless of platform version.
*
* @return mixed
*/
private function getPlatformDb()
{
return version_compare(\JVERSION, '4.0', '<')
? Factory::getDbo()
: Factory::getContainer()->get('db');
}
}