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<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Config;
use Piwik\Cache\Backend\File;
use Piwik\Common;
use Piwik\Filesystem;
use Piwik\Piwik;
use Piwik\Url;
/**
* Exception thrown when the config file doesn't exist.
*/
class Cache extends File
{
private $host = '';
public function __construct()
{
$this->host = $this->getHost();
// because the config is not yet loaded we cannot identify the instanceId...
// need to use the hostname
$dir = $this->makeCacheDir($this->host);
parent::__construct($dir);
}
private function makeCacheDir($host)
{
return PIWIK_INCLUDE_PATH . '/tmp/' . $host . '/cache/tracker';
}
public function isValidHost($mergedConfigSettings)
{
if (!isset($mergedConfigSettings['General']['trusted_hosts']) || !is_array($mergedConfigSettings['General']['trusted_hosts'])) {
return false;
}
// note: we do not support "enable_trusted_host_check" to keep things secure
return in_array($this->host, $mergedConfigSettings['General']['trusted_hosts'], true);
}
private function getHost()
{
$host = Url::getHost($checkIfTrusted = false);
$host = Url::getHostSanitized($host); // Remove any port number to get actual hostname
$host = Common::sanitizeInputValue($host);
if (empty($host)
|| strpos($host, '..') !== false
|| strpos($host, '\\') !== false
|| strpos($host, '/') !== false) {
throw new \Exception('Unsupported host');
}
$this->host = $host;
return $host;
}
public function doDelete($id)
{
// when the config changes, we need to invalidate the config caches for all configured hosts as well, not only
// the currently trusted host
$hosts = Url::getTrustedHosts();
$initialDir = $this->directory;
foreach ($hosts as $host)
{
$dir = $this->makeCacheDir($host);
if (@is_dir($dir)) {
$this->directory = $dir;
$success = parent::doDelete($id);
if ($success) {
Piwik::postEvent('Core.configFileDeleted', array($this->getFilename($id)));
}
}
}
$this->directory = $initialDir;
}
}
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