<?php
namespace MailPoetVendor\Twig\Extension;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Twig\NodeVisitor\SandboxNodeVisitor;
use MailPoetVendor\Twig\Sandbox\SecurityNotAllowedMethodError;
use MailPoetVendor\Twig\Sandbox\SecurityNotAllowedPropertyError;
use MailPoetVendor\Twig\Sandbox\SecurityPolicyInterface;
use MailPoetVendor\Twig\Source;
use MailPoetVendor\Twig\TokenParser\SandboxTokenParser;
final class SandboxExtension extends AbstractExtension
{
private $sandboxedGlobally;
private $sandboxed;
private $policy;
public function __construct(SecurityPolicyInterface $policy, $sandboxed = \false)
{
$this->policy = $policy;
$this->sandboxedGlobally = $sandboxed;
}
public function getTokenParsers() : array
{
return [new SandboxTokenParser()];
}
public function getNodeVisitors() : array
{
return [new SandboxNodeVisitor()];
}
public function enableSandbox() : void
{
$this->sandboxed = \true;
}
public function disableSandbox() : void
{
$this->sandboxed = \false;
}
public function isSandboxed() : bool
{
return $this->sandboxedGlobally || $this->sandboxed;
}
public function isSandboxedGlobally() : bool
{
return $this->sandboxedGlobally;
}
public function setSecurityPolicy(SecurityPolicyInterface $policy)
{
$this->policy = $policy;
}
public function getSecurityPolicy() : SecurityPolicyInterface
{
return $this->policy;
}
public function checkSecurity($tags, $filters, $functions) : void
{
if ($this->isSandboxed()) {
$this->policy->checkSecurity($tags, $filters, $functions);
}
}
public function checkMethodAllowed($obj, $method, int $lineno = -1, Source $source = null) : void
{
if ($this->isSandboxed()) {
try {
$this->policy->checkMethodAllowed($obj, $method);
} catch (SecurityNotAllowedMethodError $e) {
$e->setSourceContext($source);
$e->setTemplateLine($lineno);
throw $e;
}
}
}
public function checkPropertyAllowed($obj, $property, int $lineno = -1, Source $source = null) : void
{
if ($this->isSandboxed()) {
try {
$this->policy->checkPropertyAllowed($obj, $property);
} catch (SecurityNotAllowedPropertyError $e) {
$e->setSourceContext($source);
$e->setTemplateLine($lineno);
throw $e;
}
}
}
public function ensureToStringAllowed($obj, int $lineno = -1, Source $source = null)
{
if ($this->isSandboxed() && \is_object($obj) && \method_exists($obj, '__toString')) {
try {
$this->policy->checkMethodAllowed($obj, '__toString');
} catch (SecurityNotAllowedMethodError $e) {
$e->setSourceContext($source);
$e->setTemplateLine($lineno);
throw $e;
}
}
return $obj;
}
}