98 lines
3.4 KiB
PHP
98 lines
3.4 KiB
PHP
<?php
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/*
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* This file is part of the TYPO3 CMS project.
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*
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* It is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, either version 2
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* of the License, or any later version.
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*
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*
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* The TYPO3 project - inspiring people to share!
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*/
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namespace TYPO3\CMS\Core\Http;
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use Psr\Container\ContainerInterface;
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use Psr\Http\Message\ResponseInterface;
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use Psr\Http\Message\ServerRequestInterface;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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/**
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* Dispatcher which resolves a target, which was given to the request to call a controller and method (but also a callable)
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* where the request contains a "target" as attribute.
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*
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* Used in eID Frontend Requests, see EidHandler
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*/
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class Dispatcher implements DispatcherInterface
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{
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/**
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* @var ContainerInterface
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*/
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protected $container;
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public function __construct(ContainerInterface $container)
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{
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$this->container = $container;
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}
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/**
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* Main method that fetches the target from the request and calls the target directly
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*
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* @param ServerRequestInterface $request the current server request
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* @return ResponseInterface the filled response by the callable/controller/action
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* @throws \InvalidArgumentException if the defined target is invalid
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*/
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public function dispatch(ServerRequestInterface $request): ResponseInterface
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{
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$targetIdentifier = $request->getAttribute('target');
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$target = $this->getCallableFromTarget($targetIdentifier);
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$arguments = [$request];
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return $target(...$arguments);
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}
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/**
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* Creates a callable out of the given parameter, which can be a string, a callable / closure or an array
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* which can be invoked as a function.
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*
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* @param array|string|callable $target the target which is being resolved.
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* @return callable
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* @throws \InvalidArgumentException
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*/
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protected function getCallableFromTarget($target)
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{
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if (is_array($target)) {
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return $target;
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}
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if ($target instanceof \Closure) {
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return $target;
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}
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// Only a class name is given
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if (is_string($target) && !str_contains($target, ':')) {
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$targetObject = $this->container->has($target) ? $this->container->get($target) : GeneralUtility::makeInstance($target);
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if (!method_exists($targetObject, '__invoke')) {
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throw new \InvalidArgumentException('Object "' . $target . '" doesn\'t implement an __invoke() method and cannot be used as target.', 1442431631);
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}
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return $targetObject;
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}
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// Check if the target is a concatenated string of "className::actionMethod"
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if (is_string($target) && str_contains($target, '::')) {
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[$className, $methodName] = explode('::', $target, 2);
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$targetObject = $this->container->has($className) ? $this->container->get($className) : GeneralUtility::makeInstance($className);
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return [$targetObject, $methodName];
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}
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// Closures needs to be checked at last as a string with object::method is recognized as callable
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if (is_callable($target)) {
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return $target;
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}
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throw new \InvalidArgumentException('Invalid target for "' . $target . '", as it is not callable.', 1425381442);
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}
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}
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