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<?php |
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|
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/* |
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* This file is part of Twig. |
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* |
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* (c) Fabien Potencier |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace ElementorDeps\Twig\Sandbox; |
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|
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use ElementorDeps\Twig\Markup; |
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use ElementorDeps\Twig\Template; |
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/** |
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* Represents a security policy which need to be enforced when sandbox mode is enabled. |
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* |
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* @author Fabien Potencier <fabien@symfony.com> |
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*/ |
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final class SecurityPolicy implements SecurityPolicyInterface |
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{ |
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private $allowedTags; |
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private $allowedFilters; |
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private $allowedMethods; |
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private $allowedProperties; |
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private $allowedFunctions; |
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public function __construct(array $allowedTags = [], array $allowedFilters = [], array $allowedMethods = [], array $allowedProperties = [], array $allowedFunctions = []) |
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{ |
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$this->allowedTags = $allowedTags; |
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$this->allowedFilters = $allowedFilters; |
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$this->setAllowedMethods($allowedMethods); |
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$this->allowedProperties = $allowedProperties; |
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$this->allowedFunctions = $allowedFunctions; |
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} |
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public function setAllowedTags(array $tags) : void |
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{ |
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$this->allowedTags = $tags; |
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} |
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public function setAllowedFilters(array $filters) : void |
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{ |
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$this->allowedFilters = $filters; |
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} |
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public function setAllowedMethods(array $methods) : void |
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{ |
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$this->allowedMethods = []; |
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foreach ($methods as $class => $m) { |
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$this->allowedMethods[$class] = \array_map(function ($value) { |
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return \strtr($value, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'); |
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}, \is_array($m) ? $m : [$m]); |
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} |
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} |
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public function setAllowedProperties(array $properties) : void |
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{ |
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$this->allowedProperties = $properties; |
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} |
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public function setAllowedFunctions(array $functions) : void |
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{ |
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$this->allowedFunctions = $functions; |
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} |
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public function checkSecurity($tags, $filters, $functions) : void |
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{ |
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foreach ($tags as $tag) { |
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if (!\in_array($tag, $this->allowedTags)) { |
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throw new SecurityNotAllowedTagError(\sprintf('Tag "%s" is not allowed.', $tag), $tag); |
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} |
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} |
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foreach ($filters as $filter) { |
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if (!\in_array($filter, $this->allowedFilters)) { |
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throw new SecurityNotAllowedFilterError(\sprintf('Filter "%s" is not allowed.', $filter), $filter); |
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} |
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} |
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foreach ($functions as $function) { |
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if (!\in_array($function, $this->allowedFunctions)) { |
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throw new SecurityNotAllowedFunctionError(\sprintf('Function "%s" is not allowed.', $function), $function); |
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} |
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} |
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} |
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public function checkMethodAllowed($obj, $method) : void |
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{ |
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if ($obj instanceof Template || $obj instanceof Markup) { |
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return; |
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} |
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$allowed = \false; |
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$method = \strtr($method, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'); |
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foreach ($this->allowedMethods as $class => $methods) { |
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if ($obj instanceof $class && \in_array($method, $methods)) { |
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$allowed = \true; |
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break; |
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} |
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} |
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if (!$allowed) { |
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$class = \get_class($obj); |
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throw new SecurityNotAllowedMethodError(\sprintf('Calling "%s" method on a "%s" object is not allowed.', $method, $class), $class, $method); |
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} |
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} |
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public function checkPropertyAllowed($obj, $property) : void |
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{ |
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$allowed = \false; |
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foreach ($this->allowedProperties as $class => $properties) { |
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if ($obj instanceof $class && \in_array($property, \is_array($properties) ? $properties : [$properties])) { |
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$allowed = \true; |
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break; |
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} |
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} |
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if (!$allowed) { |
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$class = \get_class($obj); |
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throw new SecurityNotAllowedPropertyError(\sprintf('Calling "%s" property on a "%s" object is not allowed.', $property, $class), $class, $property); |
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} |
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} |
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} |
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