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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,188 @@ | ||
| <?php | ||
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| /** | ||
| * This file is part of the Nextras Secured Links library. | ||
| * | ||
| * @license MIT | ||
| * @link https://github.com/nextras/secured-links | ||
| */ | ||
|
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| namespace Nextras\SecuredLinks\Bridges\PhpParser; | ||
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| use Nette; | ||
| use Nette\DI\PhpReflection; | ||
| use PhpParser\Node; | ||
| use PhpParser\NodeTraverser; | ||
| use PhpParser\NodeVisitor\NameResolver; | ||
| use PhpParser\NodeVisitorAbstract; | ||
| use PhpParser\ParserFactory; | ||
| use ReflectionMethod; | ||
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| class ReturnTypeResolver extends NodeVisitorAbstract | ||
| { | ||
| /** @var string */ | ||
| private $className; | ||
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| /** @var string */ | ||
| private $methodName; | ||
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| /** @var string[] */ | ||
| private $returnTypes = []; | ||
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| /** @var string[][] */ | ||
| private $varTypes = []; | ||
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| /** @var bool */ | ||
| private $inClass = FALSE; | ||
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| /** @var bool */ | ||
| private $inMethod = FALSE; | ||
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| /** | ||
| * @param string $className | ||
| * @param string $methodName | ||
| */ | ||
| public function __construct($className, $methodName) | ||
| { | ||
| $this->className = $className; | ||
| $this->methodName = $methodName; | ||
| $this->varTypes['this'][] = $className; | ||
| } | ||
|
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|
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| /** | ||
| * @param ReflectionMethod $methodRef | ||
| * @return NULL|string | ||
| */ | ||
| public static function getReturnType(ReflectionMethod $methodRef) | ||
| { | ||
| $fileContent = file_get_contents($methodRef->getDeclaringClass()->getFileName()); | ||
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| $traverser = new NodeTraverser(); | ||
| $traverser->addVisitor(new NameResolver); | ||
| $traverser->addVisitor($resolver = new self($methodRef->getDeclaringClass()->getName(), $methodRef->getName())); | ||
| $traverser->traverse((new ParserFactory)->create(ParserFactory::PREFER_PHP7)->parse($fileContent)); | ||
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| return count($resolver->returnTypes) === 1 ? $resolver->returnTypes[0] : NULL; | ||
| } | ||
|
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| /** | ||
| * @inheritdoc | ||
| */ | ||
| public function enterNode(Node $node) | ||
| { | ||
| if ($node instanceof Node\Stmt\Class_ && $node->name === $this->className) { | ||
| $this->inClass = TRUE; | ||
|
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| } elseif ($this->inClass && $node instanceof Node\Stmt\ClassMethod && $node->name === $this->methodName) { | ||
| $this->inMethod = TRUE; | ||
|
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| } elseif ($this->inMethod) { | ||
| if ($node instanceof Node\Stmt\Return_ && $node->expr !== NULL) { | ||
| foreach ($this->getExpressionTypes($node->expr) as $type) { | ||
| $this->addReturnType($type); | ||
| } | ||
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| } elseif ($node instanceof Node\Expr\Assign) { | ||
| foreach ($this->getExpressionTypes($node->expr) as $type) { | ||
| $this->addVarType($node, $type); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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|
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| /** | ||
| * @inheritdoc | ||
| */ | ||
| public function leaveNode(Node $node) | ||
| { | ||
| if ($this->inMethod && $node instanceof Node\Stmt\ClassMethod) { | ||
| $this->inMethod = FALSE; | ||
|
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| } elseif ($this->inClass && $node instanceof Node\Stmt\Class_) { | ||
| $this->inClass = FALSE; | ||
| } | ||
| } | ||
|
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|
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| /** | ||
| * @param Node\Expr $expr | ||
| * @return string[] | ||
| */ | ||
| private function getExpressionTypes(Node\Expr $expr) | ||
| { | ||
| $result = []; | ||
|
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| if ($expr instanceof Node\Expr\New_) { | ||
| if ($expr->class instanceof Node\Name) { | ||
| $result[] = (string) $expr->class; | ||
| } | ||
|
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| } elseif ($expr instanceof Node\Expr\Variable) { | ||
| if (is_string($expr->name) && isset($this->varTypes[$expr->name])) { | ||
| $result = $this->varTypes[$expr->name]; | ||
| } | ||
|
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| } elseif ($expr instanceof Node\Expr\PropertyFetch) { | ||
| if (is_string($expr->name)) { | ||
| foreach ($this->getExpressionTypes($expr->var) as $objType) { | ||
| $propertyRef = new \ReflectionProperty($objType, $expr->name); | ||
| $type = PhpReflection::parseAnnotation($propertyRef, 'var'); | ||
| $type = $type ? PhpReflection::expandClassName($type, PhpReflection::getDeclaringClass($propertyRef)) : NULL; | ||
| $result[] = $type; | ||
| } | ||
| } | ||
|
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| } elseif ($expr instanceof Node\Expr\MethodCall) { | ||
| if (is_string($expr->name)) { | ||
| foreach ($this->getExpressionTypes($expr->var) as $objType) { | ||
| $methodRef = new \ReflectionMethod($objType, $expr->name); | ||
| $result[] = PhpReflection::getReturnType($methodRef); | ||
| } | ||
| } | ||
|
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| } elseif ($expr instanceof Node\Expr\Assign) { | ||
| foreach ($this->getExpressionTypes($expr->expr) as $type) { | ||
| $this->addVarType($expr, $type); | ||
| $result[] = $type; | ||
| } | ||
|
|
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| } elseif ($expr instanceof Node\Expr\Clone_) { | ||
| $result = $this->getExpressionTypes($expr->expr); | ||
| } | ||
|
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| return $result; | ||
| } | ||
|
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|
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| /** | ||
| * @param string $exprType | ||
| * @return void | ||
| */ | ||
| private function addReturnType($exprType) | ||
| { | ||
| if ($exprType !== NULL && class_exists($exprType) && !in_array($exprType, $this->returnTypes)) { | ||
| $this->returnTypes[] = $exprType; | ||
| } | ||
| } | ||
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| /** | ||
| * @param Node\Expr\Assign $node | ||
| * @param string $exprType | ||
| * @return void | ||
| */ | ||
| private function addVarType($node, $exprType) | ||
| { | ||
| if ($node->var instanceof Node\Expr\Variable && is_string($node->var->name) | ||
| && (empty($this->varTypes[$node->var->name]) || !in_array($exprType, $this->varTypes[$node->var->name])) | ||
| && $exprType !== NULL && class_exists($exprType) | ||
| ) { | ||
| $this->varTypes[$node->var->name][] = $exprType; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| <?php | ||
|
|
||
| /** | ||
| * This file is part of the Nextras Secured Links library. | ||
| * @license MIT | ||
| * @link https://github.com/nextras/secured-links | ||
| */ | ||
|
|
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| namespace Nextras\SecuredLinks; | ||
|
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| use Nette; | ||
| use Nette\Application\Application; | ||
| use Nette\Application\IResponse; | ||
| use Nette\Application\Responses\RedirectResponse; | ||
|
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|
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| class RedirectChecker | ||
| { | ||
| /** | ||
| * @param Application $app | ||
| * @param IResponse $response | ||
| * @return void | ||
| */ | ||
| public function checkResponse(Application $app, IResponse $response) | ||
| { | ||
| $requests = $app->getRequests(); | ||
| $request = $requests[count($requests) - 1]; | ||
|
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| if ($request->hasFlag(SecuredRouter::SIGNED) && !$response instanceof RedirectResponse) { | ||
| throw new \LogicException('Secured request did not redirect. Possible CSRF-token reveal by HTTP referer header.'); | ||
| } | ||
| } | ||
| } |
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