/usr/share/php/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php is in php-symfony-proxy-manager-bridge 3.4.6+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Bridge\ProxyManager\LazyProxy\PhpDumper;
use ProxyManager\Generator\ClassGenerator;
use ProxyManager\GeneratorStrategy\BaseGeneratorStrategy;
use ProxyManager\Version;
use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\DumperInterface;
/**
* Generates dumped PHP code of proxies via reflection.
*
* @author Marco Pivetta <ocramius@gmail.com>
*
* @final since version 3.3
*/
class ProxyDumper implements DumperInterface
{
private $salt;
private $proxyGenerator;
private $classGenerator;
/**
* @param string $salt
*/
public function __construct($salt = '')
{
$this->salt = $salt;
$this->proxyGenerator = new LazyLoadingValueHolderGenerator();
$this->classGenerator = new BaseGeneratorStrategy();
}
/**
* {@inheritdoc}
*/
public function isProxyCandidate(Definition $definition)
{
return $definition->isLazy() && ($class = $definition->getClass()) && class_exists($class);
}
/**
* {@inheritdoc}
*/
public function getProxyFactoryCode(Definition $definition, $id, $factoryCode = null)
{
$instantiation = 'return';
if ($definition->isShared()) {
$instantiation .= " \$this->services['$id'] =";
}
if (null === $factoryCode) {
@trigger_error(sprintf('The "%s()" method expects a third argument defining the code to execute to construct your service since Symfony 3.4, providing it will be required in 4.0.', __METHOD__), E_USER_DEPRECATED);
$factoryCode = '$this->get'.Container::camelize($id).'Service(false)';
} elseif (false === strpos($factoryCode, '(')) {
@trigger_error(sprintf('The "%s()" method expects its third argument to define the code to execute to construct your service since Symfony 3.4, providing it will be required in 4.0.', __METHOD__), E_USER_DEPRECATED);
$factoryCode = "\$this->$factoryCode(false)";
}
$proxyClass = $this->getProxyClassName($definition);
$hasStaticConstructor = $this->generateProxyClass($definition)->hasMethod('staticProxyConstructor');
$constructorCall = sprintf($hasStaticConstructor ? '%s::staticProxyConstructor' : 'new %s', '\\'.$proxyClass);
return <<<EOF
if (\$lazyLoad) {
$instantiation \$this->createProxy('$proxyClass', function () {
return $constructorCall(function (&\$wrappedInstance, \ProxyManager\Proxy\LazyLoadingInterface \$proxy) {
\$wrappedInstance = $factoryCode;
\$proxy->setProxyInitializer(null);
return true;
});
});
}
EOF;
}
/**
* {@inheritdoc}
*/
public function getProxyCode(Definition $definition)
{
$code = $this->classGenerator->generate($this->generateProxyClass($definition));
$code = preg_replace(
'/(\$this->initializer[0-9a-f]++) && \1->__invoke\(\$this->(valueHolder[0-9a-f]++), (.*?), \1\);/',
'$1 && ($1->__invoke(\$$2, $3, $1) || 1) && $this->$2 = \$$2;',
$code
);
if (version_compare(self::getProxyManagerVersion(), '2.2', '<')) {
$code = preg_replace(
'/((?:\$(?:this|initializer|instance)->)?(?:publicProperties|initializer|valueHolder))[0-9a-f]++/',
'${1}'.$this->getIdentifierSuffix($definition),
$code
);
}
return $code;
}
/**
* @return string
*/
private static function getProxyManagerVersion()
{
if (!\class_exists(Version::class)) {
return '0.0.1';
}
return defined(Version::class.'::VERSION') ? Version::VERSION : Version::getVersion();
}
/**
* Produces the proxy class name for the given definition.
*
* @return string
*/
private function getProxyClassName(Definition $definition)
{
return preg_replace('/^.*\\\\/', '', $definition->getClass()).'_'.$this->getIdentifierSuffix($definition);
}
/**
* @return ClassGenerator
*/
private function generateProxyClass(Definition $definition)
{
$generatedClass = new ClassGenerator($this->getProxyClassName($definition));
$this->proxyGenerator->generate(new \ReflectionClass($definition->getClass()), $generatedClass);
return $generatedClass;
}
/**
* @return string
*/
private function getIdentifierSuffix(Definition $definition)
{
return substr(hash('sha256', $definition->getClass().$this->salt), -7);
}
}
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