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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\View\Element\Template\File;
use \Magento\Framework\App\Filesystem\DirectoryList;
use Magento\Framework\Component\ComponentRegistrar;
use \Magento\Framework\Filesystem\Driver\File as FileDriver;
class Validator
{
/**
* Config path to 'Allow Symlinks' template settings
*/
public const XML_PATH_TEMPLATE_ALLOW_SYMLINK = 'dev/template/allow_symlink';
/**
* Template files map
*
* @var []
*/
protected $_templatesValidationResults = [];
/**
* View filesystem
*
* @var \Magento\Framework\FileSystem
*/
protected $_filesystem;
/**
* Allow symlinks flag
*
* @var bool
*/
protected $_isAllowSymlinks = false;
/**
* Root directory
*
* @var bool
*/
protected $directory = null;
/**
* Themes directory
*
* @var string
*/
protected $_themesDir;
/**
* Application directory
*
* @var string
*/
protected $_appDir;
/**
* Compiled templates directory
*
* @var string
*/
protected $_compiledDir;
/**
* @var FileDriver
*/
private $fileDriver;
/**
* @var array
*/
private $moduleDirs;
/**
* @param \Magento\Framework\Filesystem $filesystem
* @param \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfigInterface
* @param ComponentRegistrar $componentRegistrar
* @param string|null $scope
* @param FileDriver|null $fileDriver
*/
public function __construct(
\Magento\Framework\Filesystem $filesystem,
\Magento\Framework\App\Config\ScopeConfigInterface $scopeConfigInterface,
ComponentRegistrar $componentRegistrar,
$scope = null,
?FileDriver $fileDriver = null
) {
$this->_filesystem = $filesystem;
$this->_isAllowSymlinks = $scopeConfigInterface->getValue(self::XML_PATH_TEMPLATE_ALLOW_SYMLINK, $scope);
$this->_themesDir = $componentRegistrar->getPaths(ComponentRegistrar::THEME);
$this->moduleDirs = $componentRegistrar->getPaths(ComponentRegistrar::MODULE);
$this->_compiledDir = $this->_filesystem->getDirectoryRead(DirectoryList::TMP_MATERIALIZATION_DIR)
->getAbsolutePath();
$this->fileDriver = $fileDriver ?: \Magento\Framework\App\ObjectManager::getInstance()->get(FileDriver::class);
}
/**
* Checks whether the provided file can be rendered.
*
* Available directories which are allowed to be rendered
* (the template file should be located under these directories):
* - app
* - design
*
* @param string $filename
* @return bool
*/
public function isValid($filename)
{
$filename = str_replace('\\', '/', $filename);
if (!isset($this->_templatesValidationResults[$filename])) {
$this->_templatesValidationResults[$filename] =
($this->isPathInDirectories($filename, $this->_compiledDir)
|| $this->isPathInDirectories($filename, $this->moduleDirs)
|| $this->isPathInDirectories($filename, $this->_themesDir)
|| $this->_isAllowSymlinks)
&& $this->getRootDirectory()->isFile($this->getRootDirectory()->getRelativePath($filename));
}
return $this->_templatesValidationResults[$filename];
}
/**
* Checks whether path related to the directory
*
* @param string $path
* @param string|array $directories
* @return bool
*/
protected function isPathInDirectories($path, $directories)
{
if (!is_array($directories)) {
$directories = (array)$directories;
}
$realPath = $this->fileDriver->getRealPath($path);
foreach ($directories as $directory) {
if ($directory !== null && 0 === strpos($realPath, $directory)) {
return true;
}
}
return false;
}
/**
* Instantiates filesystem directory
*
* @return \Magento\Framework\Filesystem\Directory\ReadInterface
*/
protected function getRootDirectory()
{
if (null === $this->directory) {
$this->directory = $this->_filesystem->getDirectoryRead(DirectoryList::ROOT);
}
return $this->directory;
}
}