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EDITING: SecurityPolicy.php

<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Sandbox;

use Twig\Markup;

/**
 * Represents a security policy which need to be enforced when sandbox mode is enabled.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SecurityPolicy implements SecurityPolicyInterface
{
    protected $allowedTags;
    protected $allowedFilters;
    protected $allowedMethods;
    protected $allowedProperties;
    protected $allowedFunctions;

public function __construct(array $allowedTags = [], array $allowedFilters = [], array $allowedMethods = [], array $allowedProperties = [], array $allowedFunctions = [])
    {
        $this->allowedTags = $allowedTags;
        $this->allowedFilters = $allowedFilters;
        $this->setAllowedMethods($allowedMethods);
        $this->allowedProperties = $allowedProperties;
        $this->allowedFunctions = $allowedFunctions;
    }

public function setAllowedTags(array $tags)
    {
        $this->allowedTags = $tags;
    }

public function setAllowedFilters(array $filters)
    {
        $this->allowedFilters = $filters;
    }

public function setAllowedMethods(array $methods)
    {
        $this->allowedMethods = [];
        foreach ($methods as $class => $m) {
            $this->allowedMethods[$class] = array_map('strtolower', \is_array($m) ? $m : [$m]);
        }
    }

public function setAllowedProperties(array $properties)
    {
        $this->allowedProperties = $properties;
    }

public function setAllowedFunctions(array $functions)
    {
        $this->allowedFunctions = $functions;
    }

public function checkSecurity($tags, $filters, $functions)
    {
        foreach ($tags as $tag) {
            if (!\in_array($tag, $this->allowedTags)) {
                throw new SecurityNotAllowedTagError(sprintf('Tag "%s" is not allowed.', $tag), $tag);
            }
        }

foreach ($filters as $filter) {
            if (!\in_array($filter, $this->allowedFilters)) {
                throw new SecurityNotAllowedFilterError(sprintf('Filter "%s" is not allowed.', $filter), $filter);
            }
        }

foreach ($functions as $function) {
            if (!\in_array($function, $this->allowedFunctions)) {
                throw new SecurityNotAllowedFunctionError(sprintf('Function "%s" is not allowed.', $function), $function);
            }
        }
    }

public function checkMethodAllowed($obj, $method)
    {
        if ($obj instanceof \Twig_TemplateInterface || $obj instanceof Markup) {
            return;
        }

$allowed = false;
        $method = strtolower($method);
        foreach ($this->allowedMethods as $class => $methods) {
            if ($obj instanceof $class) {
                $allowed = \in_array($method, $methods);

break;
            }
        }

if (!$allowed) {
            $class = \get_class($obj);
            throw new SecurityNotAllowedMethodError(sprintf('Calling "%s" method on a "%s" object is not allowed.', $method, $class), $class, $method);
        }
    }

public function checkPropertyAllowed($obj, $property)
    {
        $allowed = false;
        foreach ($this->allowedProperties as $class => $properties) {
            if ($obj instanceof $class) {
                $allowed = \in_array($property, \is_array($properties) ? $properties : [$properties]);

break;
            }
        }

if (!$allowed) {
            $class = \get_class($obj);
            throw new SecurityNotAllowedPropertyError(sprintf('Calling "%s" property on a "%s" object is not allowed.', $property, $class), $class, $property);
        }
    }
}

class_alias('Twig\Sandbox\SecurityPolicy', 'Twig_Sandbox_SecurityPolicy');

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📄 SecurityError.php	PHP	483 B	2019-06-04 12:06	EDIT
📄 SecurityNotAllowedFilterError.php	PHP	877 B	2019-06-04 12:06	EDIT
📄 SecurityNotAllowedFunctionError.php	PHP	893 B	2019-06-04 12:06	EDIT
📄 SecurityNotAllowedMethodError.php	PHP	1 KB	2019-06-04 12:06	EDIT
📄 SecurityNotAllowedPropertyError.php	PHP	1 KB	2019-06-04 12:06	EDIT
📄 SecurityNotAllowedTagError.php	PHP	843 B	2019-06-04 12:06	EDIT
📄 SecurityPolicy.php	PHP	3.8 KB	2019-06-04 12:06	EDIT
📄 SecurityPolicyInterface.php	PHP	660 B	2019-06-04 12:06	EDIT