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<?php |
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namespace nystudio107\crafttwigsandbox\twig; |
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use nystudio107\crafttwigsandbox\helpers\SecurityPolicy; |
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use Twig\Markup; |
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use Twig\Sandbox\SecurityNotAllowedFilterError; |
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use Twig\Sandbox\SecurityNotAllowedFunctionError; |
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use Twig\Sandbox\SecurityNotAllowedMethodError; |
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use Twig\Sandbox\SecurityNotAllowedPropertyError; |
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use Twig\Sandbox\SecurityNotAllowedTagError; |
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use Twig\Template; |
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class BlacklistSecurityPolicy extends BaseSecurityPolicy |
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{ |
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// Public Methods |
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// ========================================================================= |
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/** |
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* @inheritDoc |
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*/ |
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public function __construct($config = []) |
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{ |
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if (empty($config)) { |
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$config = SecurityPolicy::getConfigFromFile('blacklist-sandbox', '@vendor/nystudio107/craft-twig-sandbox/src/config'); |
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unset($config['class']); |
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} |
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parent::__construct($config); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function checkSecurity($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->getTwigTags(), true)) { |
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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->getTwigFilters(), true)) { |
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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->getTwigFunctions(), true)) { |
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throw new SecurityNotAllowedFunctionError(sprintf('Function "%s" is not allowed.', $function), $function); |
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} |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function checkMethodAllowed($obj, $method): void |
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{ |
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if ($obj instanceof Template || $obj instanceof Markup) { |
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return; |
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} |
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$method = strtr($method, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'); |
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$allowed = true; |
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foreach ($this->getTwigMethods() as $class => $methods) { |
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if ($obj instanceof $class) { |
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if ($methods[0] === '*' || in_array($method, $methods, true)) { |
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$allowed = false; |
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break; |
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} |
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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, $method); |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function checkPropertyAllowed($obj, $property): void |
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{ |
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$allowed = true; |
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$property = strtr($property, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'); |
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foreach ($this->getTwigProperties() as $class => $properties) { |
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if ($obj instanceof $class) { |
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if ($properties[0] === '*' || in_array($property, $properties, true)) { |
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$allowed = false; |
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break; |
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} |
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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('Accessing "%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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nystudio107 /
craft-twig-sandbox
