/
ControllerFactory.php
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/
ControllerFactory.php
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<?php
declare(strict_types=1);
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.3.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Controller;
use Cake\Controller\Exception\InvalidParameterException;
use Cake\Core\App;
use Cake\Core\ContainerInterface;
use Cake\Http\ControllerFactoryInterface;
use Cake\Http\Exception\MissingControllerException;
use Cake\Http\MiddlewareQueue;
use Cake\Http\Runner;
use Cake\Http\ServerRequest;
use Cake\Utility\Inflector;
use Closure;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;
use ReflectionClass;
use ReflectionFunction;
use ReflectionNamedType;
/**
* Factory method for building controllers for request.
*
* @implements \Cake\Http\ControllerFactoryInterface<\Cake\Controller\Controller>
*/
class ControllerFactory implements ControllerFactoryInterface, RequestHandlerInterface
{
/**
* @var \Cake\Core\ContainerInterface
*/
protected $container;
/**
* @var \Cake\Controller\Controller
*/
protected $controller;
/**
* Constructor
*
* @param \Cake\Core\ContainerInterface $container The container to build controllers with.
*/
public function __construct(ContainerInterface $container)
{
$this->container = $container;
}
/**
* Create a controller for a given request.
*
* @param \Psr\Http\Message\ServerRequestInterface $request The request to build a controller for.
* @return \Cake\Controller\Controller
* @throws \Cake\Http\Exception\MissingControllerException
*/
public function create(ServerRequestInterface $request): Controller
{
$className = $this->getControllerClass($request);
if ($className === null) {
throw $this->missingController($request);
}
$reflection = new ReflectionClass($className);
if ($reflection->isAbstract()) {
throw $this->missingController($request);
}
// Get the controller from the container if defined.
// The request is in the container by default.
if ($this->container->has($className)) {
$controller = $this->container->get($className);
} else {
$controller = $reflection->newInstance($request);
}
return $controller;
}
/**
* Invoke a controller's action and wrapping methods.
*
* @param \Cake\Controller\Controller $controller The controller to invoke.
* @return \Psr\Http\Message\ResponseInterface The response
* @throws \Cake\Controller\Exception\MissingActionException If controller action is not found.
* @throws \UnexpectedValueException If return value of action method is not null or ResponseInterface instance.
*/
public function invoke($controller): ResponseInterface
{
$this->controller = $controller;
$middlewares = $controller->getMiddleware();
if ($middlewares) {
$middlewareQueue = new MiddlewareQueue($middlewares);
$runner = new Runner();
return $runner->run($middlewareQueue, $controller->getRequest(), $this);
}
return $this->handle($controller->getRequest());
}
/**
* Invoke the action.
*
* @param \Psr\Http\Message\ServerRequestInterface $request Request instance.
* @return \Psr\Http\Message\ResponseInterface
*/
public function handle(ServerRequestInterface $request): ResponseInterface
{
$controller = $this->controller;
/** @psalm-suppress ArgumentTypeCoercion */
$controller->setRequest($request);
$result = $controller->startupProcess();
if ($result instanceof ResponseInterface) {
return $result;
}
$action = $controller->getAction();
$args = $this->getActionArgs(
$action,
array_values((array)$controller->getRequest()->getParam('pass'))
);
$controller->invokeAction($action, $args);
$result = $controller->shutdownProcess();
if ($result instanceof ResponseInterface) {
return $result;
}
return $controller->getResponse();
}
/**
* Get the arguments for the controller action invocation.
*
* @param \Closure $action Controller action.
* @param array $passedParams Params passed by the router.
* @return array
*/
protected function getActionArgs(Closure $action, array $passedParams): array
{
$resolved = [];
$function = new ReflectionFunction($action);
foreach ($function->getParameters() as $parameter) {
$type = $parameter->getType();
if ($type && !$type instanceof ReflectionNamedType) {
// Only single types are supported
throw new InvalidParameterException([
'template' => 'unsupported_type',
'parameter' => $parameter->getName(),
'controller' => $this->controller->getName(),
'action' => $this->controller->getRequest()->getParam('action'),
'prefix' => $this->controller->getRequest()->getParam('prefix'),
'plugin' => $this->controller->getRequest()->getParam('plugin'),
]);
}
// Check for dependency injection for classes
if ($type instanceof ReflectionNamedType && !$type->isBuiltin()) {
$typeName = $type->getName();
if ($this->container->has($typeName)) {
$resolved[] = $this->container->get($typeName);
continue;
}
// Use passedParams as a source of typed dependencies.
// The accepted types for passedParams was never defined and userland code relies on that.
if ($passedParams && is_object($passedParams[0]) && $passedParams[0] instanceof $typeName) {
$resolved[] = array_shift($passedParams);
continue;
}
// Add default value if provided
// Do not allow positional arguments for classes
if ($parameter->isDefaultValueAvailable()) {
$resolved[] = $parameter->getDefaultValue();
continue;
}
throw new InvalidParameterException([
'template' => 'missing_dependency',
'parameter' => $parameter->getName(),
'type' => $typeName,
'controller' => $this->controller->getName(),
'action' => $this->controller->getRequest()->getParam('action'),
'prefix' => $this->controller->getRequest()->getParam('prefix'),
'plugin' => $this->controller->getRequest()->getParam('plugin'),
]);
}
// Use any passed params as positional arguments
if ($passedParams) {
$argument = array_shift($passedParams);
if (is_string($argument) && $type instanceof ReflectionNamedType) {
$typedArgument = $this->coerceStringToType($argument, $type);
if ($typedArgument === null) {
throw new InvalidParameterException([
'template' => 'failed_coercion',
'passed' => $argument,
'type' => $type->getName(),
'parameter' => $parameter->getName(),
'controller' => $this->controller->getName(),
'action' => $this->controller->getRequest()->getParam('action'),
'prefix' => $this->controller->getRequest()->getParam('prefix'),
'plugin' => $this->controller->getRequest()->getParam('plugin'),
]);
}
$argument = $typedArgument;
}
$resolved[] = $argument;
continue;
}
// Add default value if provided
if ($parameter->isDefaultValueAvailable()) {
$resolved[] = $parameter->getDefaultValue();
continue;
}
// Variadic parameter can have 0 arguments
if ($parameter->isVariadic()) {
continue;
}
throw new InvalidParameterException([
'template' => 'missing_parameter',
'parameter' => $parameter->getName(),
'controller' => $this->controller->getName(),
'action' => $this->controller->getRequest()->getParam('action'),
'prefix' => $this->controller->getRequest()->getParam('prefix'),
'plugin' => $this->controller->getRequest()->getParam('plugin'),
]);
}
return array_merge($resolved, $passedParams);
}
/**
* Coerces string argument to primitive type.
*
* @param string $argument Argument to coerce
* @param \ReflectionNamedType $type Parameter type
* @return array|string|float|int|bool|null
*/
protected function coerceStringToType(string $argument, ReflectionNamedType $type)
{
switch ($type->getName()) {
case 'string':
return $argument;
case 'float':
return is_numeric($argument) ? (float)$argument : null;
case 'int':
return filter_var($argument, FILTER_VALIDATE_INT, FILTER_NULL_ON_FAILURE);
case 'bool':
return $argument === '0' ? false : ($argument === '1' ? true : null);
case 'array':
return $argument === '' ? [] : explode(',', $argument);
}
return null;
}
/**
* Determine the controller class name based on current request and controller param
*
* @param \Cake\Http\ServerRequest $request The request to build a controller for.
* @return string|null
* @psalm-return class-string<\Cake\Controller\Controller>|null
*/
public function getControllerClass(ServerRequest $request): ?string
{
$pluginPath = '';
$namespace = 'Controller';
$controller = $request->getParam('controller', '');
if ($request->getParam('plugin')) {
$pluginPath = $request->getParam('plugin') . '.';
}
if ($request->getParam('prefix')) {
$prefix = $request->getParam('prefix');
$firstChar = substr($prefix, 0, 1);
if ($firstChar !== strtoupper($firstChar)) {
deprecationWarning(
"The `{$prefix}` prefix did not start with an upper case character. " .
'Routing prefixes should be defined as CamelCase values. ' .
'Prefix inflection will be removed in 5.0'
);
if (strpos($prefix, '/') === false) {
$namespace .= '/' . Inflector::camelize($prefix);
} else {
$prefixes = array_map(
function ($val) {
return Inflector::camelize($val);
},
explode('/', $prefix)
);
$namespace .= '/' . implode('/', $prefixes);
}
} else {
$namespace .= '/' . $prefix;
}
}
$firstChar = substr($controller, 0, 1);
// Disallow plugin short forms, / and \\ from
// controller names as they allow direct references to
// be created.
if (
strpos($controller, '\\') !== false ||
strpos($controller, '/') !== false ||
strpos($controller, '.') !== false ||
$firstChar === strtolower($firstChar)
) {
throw $this->missingController($request);
}
/** @var class-string<\Cake\Controller\Controller>|null */
return App::className($pluginPath . $controller, $namespace, 'Controller');
}
/**
* Throws an exception when a controller is missing.
*
* @param \Cake\Http\ServerRequest $request The request.
* @return \Cake\Http\Exception\MissingControllerException
*/
protected function missingController(ServerRequest $request)
{
return new MissingControllerException([
'class' => $request->getParam('controller'),
'plugin' => $request->getParam('plugin'),
'prefix' => $request->getParam('prefix'),
'_ext' => $request->getParam('_ext'),
]);
}
}