273 lines
9.5 KiB
PHP
273 lines
9.5 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\HttpKernel\Controller;
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use Psr\Log\LoggerInterface;
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use Symfony\Component\HttpFoundation\Exception\BadRequestException;
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use Symfony\Component\HttpFoundation\Request;
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use Symfony\Component\HttpKernel\Attribute\AsController;
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/**
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* This implementation uses the '_controller' request attribute to determine
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* the controller to execute.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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* @author Tobias Schultze <http://tobion.de>
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*/
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class ControllerResolver implements ControllerResolverInterface
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{
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private array $allowedControllerTypes = [];
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private array $allowedControllerAttributes = [AsController::class => AsController::class];
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public function __construct(
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private ?LoggerInterface $logger = null,
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) {
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}
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/**
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* @param array<class-string> $types
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* @param array<class-string> $attributes
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*/
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public function allowControllers(array $types = [], array $attributes = []): void
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{
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foreach ($types as $type) {
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$this->allowedControllerTypes[$type] = $type;
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}
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foreach ($attributes as $attribute) {
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$this->allowedControllerAttributes[$attribute] = $attribute;
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}
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}
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/**
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* @throws BadRequestException when the request has attribute "_check_controller_is_allowed" set to true and the controller is not allowed
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*/
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public function getController(Request $request): callable|false
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{
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if (!$controller = $request->attributes->get('_controller')) {
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$this->logger?->warning('Unable to look for the controller as the "_controller" parameter is missing.');
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return false;
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}
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if (\is_array($controller)) {
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if (isset($controller[0]) && \is_string($controller[0]) && isset($controller[1])) {
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try {
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$controller[0] = $this->instantiateController($controller[0]);
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} catch (\Error|\LogicException $e) {
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if (\is_callable($controller)) {
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return $this->checkController($request, $controller);
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}
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throw $e;
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}
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}
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if (!\is_callable($controller)) {
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throw new \InvalidArgumentException(sprintf('The controller for URI "%s" is not callable: ', $request->getPathInfo()).$this->getControllerError($controller));
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}
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return $this->checkController($request, $controller);
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}
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if (\is_object($controller)) {
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if (!\is_callable($controller)) {
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throw new \InvalidArgumentException(sprintf('The controller for URI "%s" is not callable: ', $request->getPathInfo()).$this->getControllerError($controller));
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}
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return $this->checkController($request, $controller);
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}
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if (\function_exists($controller)) {
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return $this->checkController($request, $controller);
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}
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try {
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$callable = $this->createController($controller);
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} catch (\InvalidArgumentException $e) {
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throw new \InvalidArgumentException(sprintf('The controller for URI "%s" is not callable: ', $request->getPathInfo()).$e->getMessage(), 0, $e);
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}
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if (!\is_callable($callable)) {
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throw new \InvalidArgumentException(sprintf('The controller for URI "%s" is not callable: ', $request->getPathInfo()).$this->getControllerError($callable));
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}
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return $this->checkController($request, $callable);
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}
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/**
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* Returns a callable for the given controller.
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*
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* @throws \InvalidArgumentException When the controller cannot be created
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*/
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protected function createController(string $controller): callable
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{
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if (!str_contains($controller, '::')) {
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$controller = $this->instantiateController($controller);
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if (!\is_callable($controller)) {
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throw new \InvalidArgumentException($this->getControllerError($controller));
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}
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return $controller;
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}
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[$class, $method] = explode('::', $controller, 2);
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try {
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$controller = [$this->instantiateController($class), $method];
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} catch (\Error|\LogicException $e) {
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try {
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if ((new \ReflectionMethod($class, $method))->isStatic()) {
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return $class.'::'.$method;
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}
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} catch (\ReflectionException) {
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throw $e;
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}
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throw $e;
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}
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if (!\is_callable($controller)) {
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throw new \InvalidArgumentException($this->getControllerError($controller));
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}
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return $controller;
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}
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/**
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* Returns an instantiated controller.
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*/
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protected function instantiateController(string $class): object
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{
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return new $class();
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}
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private function getControllerError(mixed $callable): string
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{
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if (\is_string($callable)) {
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if (str_contains($callable, '::')) {
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$callable = explode('::', $callable, 2);
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} else {
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return sprintf('Function "%s" does not exist.', $callable);
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}
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}
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if (\is_object($callable)) {
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$availableMethods = $this->getClassMethodsWithoutMagicMethods($callable);
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$alternativeMsg = $availableMethods ? sprintf(' or use one of the available methods: "%s"', implode('", "', $availableMethods)) : '';
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return sprintf('Controller class "%s" cannot be called without a method name. You need to implement "__invoke"%s.', get_debug_type($callable), $alternativeMsg);
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}
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if (!\is_array($callable)) {
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return sprintf('Invalid type for controller given, expected string, array or object, got "%s".', get_debug_type($callable));
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}
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if (!isset($callable[0]) || !isset($callable[1]) || 2 !== \count($callable)) {
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return 'Invalid array callable, expected [controller, method].';
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}
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[$controller, $method] = $callable;
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if (\is_string($controller) && !class_exists($controller)) {
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return sprintf('Class "%s" does not exist.', $controller);
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}
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$className = \is_object($controller) ? get_debug_type($controller) : $controller;
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if (method_exists($controller, $method)) {
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return sprintf('Method "%s" on class "%s" should be public and non-abstract.', $method, $className);
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}
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$collection = $this->getClassMethodsWithoutMagicMethods($controller);
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$alternatives = [];
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foreach ($collection as $item) {
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$lev = levenshtein($method, $item);
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if ($lev <= \strlen($method) / 3 || str_contains($item, $method)) {
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$alternatives[] = $item;
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}
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}
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asort($alternatives);
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$message = sprintf('Expected method "%s" on class "%s"', $method, $className);
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if (\count($alternatives) > 0) {
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$message .= sprintf(', did you mean "%s"?', implode('", "', $alternatives));
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} else {
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$message .= sprintf('. Available methods: "%s".', implode('", "', $collection));
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}
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return $message;
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}
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private function getClassMethodsWithoutMagicMethods($classOrObject): array
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{
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$methods = get_class_methods($classOrObject);
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return array_filter($methods, fn (string $method) => 0 !== strncmp($method, '__', 2));
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}
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private function checkController(Request $request, callable $controller): callable
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{
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if (!$request->attributes->get('_check_controller_is_allowed', false)) {
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return $controller;
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}
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$r = null;
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if (\is_array($controller)) {
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[$class, $name] = $controller;
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$name = (\is_string($class) ? $class : $class::class).'::'.$name;
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} elseif (\is_object($controller) && !$controller instanceof \Closure) {
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$class = $controller;
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$name = $class::class.'::__invoke';
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} else {
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$r = new \ReflectionFunction($controller);
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$name = $r->name;
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if ($r->isAnonymous()) {
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$name = $class = \Closure::class;
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} elseif ($class = $r->getClosureCalledClass()) {
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$class = $class->name;
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$name = $class.'::'.$name;
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}
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}
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if ($class) {
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foreach ($this->allowedControllerTypes as $type) {
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if (is_a($class, $type, true)) {
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return $controller;
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}
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}
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}
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$r ??= new \ReflectionClass($class);
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foreach ($r->getAttributes() as $attribute) {
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if (isset($this->allowedControllerAttributes[$attribute->getName()])) {
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return $controller;
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}
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}
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if (str_contains($name, '@anonymous')) {
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$name = preg_replace_callback('/[a-zA-Z_\x7f-\xff][\\\\a-zA-Z0-9_\x7f-\xff]*+@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)[0-9a-fA-F]++/', fn ($m) => class_exists($m[0], false) ? (get_parent_class($m[0]) ?: key(class_implements($m[0])) ?: 'class').'@anonymous' : $m[0], $name);
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}
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throw new BadRequestException(sprintf('Callable "%s()" is not allowed as a controller. Did you miss tagging it with "#[AsController]" or registering its type with "%s::allowControllers()"?', $name, self::class));
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}
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}
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