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<?php
declare(strict_types=1);
namespace DG\BypassFinals;
use DG\BypassFinals;
/**
* Wrapper that mutates PHP source codes.
* @internal
*/
final class MutatingWrapper
{
/** @var string */
public static $underlyingWrapperClass;
/** @var resource|null */
public $context;
/** @var object|null */
private $wrapper;
public function stream_open(string $path, string $mode, int $options, ?string &$openedPath): bool
{
if (is_dir($path)) {
return false;
}
$this->wrapper = $this->createUnderlyingWrapper();
if (!$this->wrapper->stream_open($path, $mode, $options, $openedPath)) {
return false;
}
if ($mode === 'rb' && pathinfo($path, PATHINFO_EXTENSION) === 'php' && BypassFinals::isPathInWhiteList($path)) {
$content = '';
while (!$this->wrapper->stream_eof()) {
$content .= $this->wrapper->stream_read(8192);
}
$modified = BypassFinals::modifyCode($content);
if ($modified === $content) {
$this->wrapper->stream_seek(0);
} else {
$this->wrapper->stream_close();
$this->wrapper = new NativeWrapper;
$this->wrapper->handle = tmpfile();
$this->wrapper->stream_write($modified);
$this->wrapper->stream_seek(0);
}
}
return true;
}
public function dir_opendir(string $path, int $options): bool
{
$this->wrapper = $this->createUnderlyingWrapper();
return $this->wrapper->dir_opendir($path, $options);
}
/** @return object */
private function createUnderlyingWrapper()
{
$wrapper = new self::$underlyingWrapperClass;
$wrapper->context = $this->context;
return $wrapper;
}
/** @return mixed */
public function __call(string $method, array $args)
{
$wrapper = $this->wrapper ?? $this->createUnderlyingWrapper();
return method_exists($wrapper, $method)
? $wrapper->$method(...$args)
: false;
}
}