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<?php
/**
* @link https://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license https://www.yiiframework.com/license/
*/
namespace yii\web;
use Yii;
use yii\base\Exception;
use yii\base\InlineAction;
use yii\helpers\Url;
use yii\base\Action;
use yii\base\Controller as BaseController;
use yii\base\Module;
/**
* Controller is the base class of web controllers.
*
* For more details and usage information on Controller, see the [guide article on controllers](guide:structure-controllers).
*
* @property Request $request The request object.
* @property Response $response The response object.
* @property View $view The view object that can be used to render views or view files.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*
* @template T of Module
* @extends BaseController<T>
*/
class Controller extends BaseController
{
/**
* @var bool whether to enable CSRF validation for the actions in this controller.
* CSRF validation is enabled only when both this property and [[\yii\web\Request::enableCsrfValidation]] are true.
*/
public $enableCsrfValidation = true;
/**
* @var array the parameters bound to the current action.
*/
public $actionParams = [];
/**
* Renders a view in response to an AJAX request.
*
* This method is similar to [[renderPartial()]] except that it will inject into
* the rendering result with JS/CSS scripts and files which are registered with the view.
* For this reason, you should use this method instead of [[renderPartial()]] to render
* a view to respond to an AJAX request.
*
* @param string $view the view name. Please refer to [[render()]] on how to specify a view name.
* @param array $params the parameters (name-value pairs) that should be made available in the view.
* @return string the rendering result.
*/
public function renderAjax($view, $params = [])
{
/** @var View */
$viewComponent = $this->getView();
return $viewComponent->renderAjax($view, $params, $this);
}
/**
* Send data formatted as JSON.
*
* This method is a shortcut for sending data formatted as JSON. It will return
* the [[Application::getResponse()|response]] application component after configuring
* the [[Response::$format|format]] and setting the [[Response::$data|data]] that should
* be formatted. A common usage will be:
*
* ```
* return $this->asJson($data);
* ```
*
* @param mixed $data the data that should be formatted.
* @return Response a response that is configured to send `$data` formatted as JSON.
* @since 2.0.11
* @see Response::$format
* @see Response::FORMAT_JSON
* @see JsonResponseFormatter
*/
public function asJson($data)
{
$this->response->format = Response::FORMAT_JSON;
$this->response->data = $data;
return $this->response;
}
/**
* Send data formatted as XML.
*
* This method is a shortcut for sending data formatted as XML. It will return
* the [[Application::getResponse()|response]] application component after configuring
* the [[Response::$format|format]] and setting the [[Response::$data|data]] that should
* be formatted. A common usage will be:
*
* ```
* return $this->asXml($data);
* ```
*
* @param mixed $data the data that should be formatted.
* @return Response a response that is configured to send `$data` formatted as XML.
* @since 2.0.11
* @see Response::$format
* @see Response::FORMAT_XML
* @see XmlResponseFormatter
*/
public function asXml($data)
{
$this->response->format = Response::FORMAT_XML;
$this->response->data = $data;
return $this->response;
}
/**
* Binds the parameters to the action.
* This method is invoked by [[Action]] when it begins to run with the given parameters.
* This method will check the parameter names that the action requires and return
* the provided parameters according to the requirement. If there is any missing parameter,
* an exception will be thrown.
* @param Action $action the action to be bound with parameters
* @param array $params the parameters to be bound to the action
* @return array the valid parameters that the action can run with.
* @throws BadRequestHttpException if there are missing or invalid parameters.
*
* @phpstan-param Action<$this> $action
* @psalm-param Action<$this> $action
*
* @phpstan-param array<array-key, mixed> $params
* @psalm-param array<array-key, mixed> $params
*
* @phpstan-return mixed[]
* @psalm-return mixed[]
*/
public function bindActionParams($action, $params)
{
if ($action instanceof InlineAction) {
$method = new \ReflectionMethod($this, $action->actionMethod);
} else {
$method = new \ReflectionMethod($action, 'run');
}
$args = [];
$missing = [];
$actionParams = [];
$requestedParams = [];
foreach ($method->getParameters() as $param) {
$name = $param->getName();
if (array_key_exists($name, $params)) {
$isValid = true;
$type = $param->getType();
if ($type instanceof \ReflectionNamedType) {
[$result, $isValid] = $this->filterSingleTypeActionParam($params[$name], $type);
$params[$name] = $result;
} elseif ($type instanceof \ReflectionUnionType) {
[$result, $isValid] = $this->filterUnionTypeActionParam($params[$name], $type);
$params[$name] = $result;
}
if (!$isValid) {
throw new BadRequestHttpException(
Yii::t('yii', 'Invalid data received for parameter "{param}".', ['param' => $name])
);
}
$args[] = $actionParams[$name] = $params[$name];
unset($params[$name]);
} elseif (
PHP_VERSION_ID >= 70100
&& ($type = $param->getType()) !== null
&& $type instanceof \ReflectionNamedType
&& !$type->isBuiltin()
) {
try {
$this->bindInjectedParams($type, $name, $args, $requestedParams);
} catch (HttpException $e) {
throw $e;
} catch (Exception $e) {
throw new ServerErrorHttpException($e->getMessage(), 0, $e);
}
} elseif ($param->isDefaultValueAvailable()) {
$args[] = $actionParams[$name] = $param->getDefaultValue();
} else {
$missing[] = $name;
}
}
if (!empty($missing)) {
throw new BadRequestHttpException(
Yii::t('yii', 'Missing required parameters: {params}', ['params' => implode(', ', $missing)])
);
}
$this->actionParams = $actionParams;
// We use a different array here, specifically one that doesn't contain service instances but descriptions instead.
if (Yii::$app->requestedParams === null) {
Yii::$app->requestedParams = array_merge($actionParams, $requestedParams);
}
return $args;
}
/**
* The logic for [[bindActionParam]] to validate whether a given parameter matches the action's typing
* if the function parameter has a single named type.
* @param mixed $param The parameter value.
* @param \ReflectionNamedType $type
* @return array The resulting parameter value and a boolean indicating whether the value is valid.
*
* @phpstan-return array{mixed, bool}
*/
private function filterSingleTypeActionParam($param, $type)
{
$isArray = $type->getName() === 'array';
if ($isArray) {
return [(array)$param, true];
}
$isMixed = $type->getName() === 'mixed';
if ($isMixed) {
return [$param, true];
}
if (is_array($param)) {
return [$param, false];
}
if (
PHP_VERSION_ID >= 70000
&& method_exists($type, 'isBuiltin')
&& $type->isBuiltin()
&& ($param !== null || !$type->allowsNull())
) {
$typeName = PHP_VERSION_ID >= 70100 ? $type->getName() : (string)$type;
if ($param === '' && $type->allowsNull()) {
if ($typeName !== 'string') { // for old string behavior compatibility
return [null, true];
}
return ['', true];
}
if ($typeName === 'string') {
return [$param, true];
}
$filterResult = $this->filterParamByType($param, $typeName);
return [$filterResult, $filterResult !== null];
}
return [$param, true];
}
/**
* The logic for [[bindActionParam]] to validate whether a given parameter matches the action's typing
* if the function parameter has a union type.
* @param mixed $param The parameter value.
* @param \ReflectionUnionType $type
* @return array The resulting parameter value and a boolean indicating whether the value is valid.
*
* @phpstan-return array{mixed, bool}
*/
private function filterUnionTypeActionParam($param, $type)
{
$types = $type->getTypes();
if ($param === '' && $type->allowsNull()) {
// check if type can be string for old string behavior compatibility
foreach ($types as $partialType) {
if (
$partialType === null
|| !method_exists($partialType, 'isBuiltin')
|| !$partialType->isBuiltin()
) {
continue;
}
$typeName = PHP_VERSION_ID >= 70100 ? $partialType->getName() : (string)$partialType;
if ($typeName === 'string') {
return ['', true];
}
}
return [null, true];
}
// if we found a built-in type but didn't return out, its validation failed
$foundBuiltinType = false;
// we save returning out an array or string for later because other types should take precedence
$canBeArray = false;
$canBeString = false;
foreach ($types as $partialType) {
if (
$partialType === null
|| !method_exists($partialType, 'isBuiltin')
|| !$partialType->isBuiltin()
) {
continue;
}
$foundBuiltinType = true;
$typeName = PHP_VERSION_ID >= 70100 ? $partialType->getName() : (string)$partialType;
$canBeArray |= $typeName === 'array';
$canBeString |= $typeName === 'string';
if (is_array($param)) {
if ($canBeArray) {
break;
}
continue;
}
$filterResult = $this->filterParamByType($param, $typeName);
if ($filterResult !== null) {
return [$filterResult, true];
}
}
if (!is_array($param) && $canBeString) {
return [$param, true];
}
if ($canBeArray) {
return [(array)$param, true];
}
return [$param, $canBeString || !$foundBuiltinType];
}
/**
* Run the according filter_var logic for teh given type.
* @param string $param The value to filter.
* @param string $typeName The type name.
* @return mixed|null The resulting value, or null if validation failed or the type can't be validated.
*/
private function filterParamByType(string $param, string $typeName)
{
switch ($typeName) {
case 'int':
return filter_var($param, FILTER_VALIDATE_INT, FILTER_NULL_ON_FAILURE);
case 'float':
return filter_var($param, FILTER_VALIDATE_FLOAT, FILTER_NULL_ON_FAILURE);
case 'bool':
return filter_var($param, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);
}
return null;
}
/**
* {@inheritdoc}
*/
public function beforeAction($action)
{
if (parent::beforeAction($action)) {
if ($this->enableCsrfValidation && Yii::$app->getErrorHandler()->exception === null && !$this->request->validateCsrfToken()) {
throw new BadRequestHttpException(Yii::t('yii', 'Unable to verify your data submission.'));
}
return true;
}
return false;
}
/**
* Redirects the browser to the specified URL.
* This method is a shortcut to [[Response::redirect()]].
*
* You can use it in an action by returning the [[Response]] directly:
*
* ```
* // stop executing this action and redirect to login page
* return $this->redirect(['login']);
* ```
*
* @param string|array $url the URL to be redirected to. This can be in one of the following formats:
*
* - a string representing a URL (e.g. "https://example.com")
* - a string representing a URL alias (e.g. "@example.com")
* - an array in the format of `[$route, ...name-value pairs...]` (e.g. `['site/index', 'ref' => 1]`)
* [[Url::to()]] will be used to convert the array into a URL.
*
* Any relative URL that starts with a single forward slash "/" will be converted
* into an absolute one by prepending it with the host info of the current request.
*
* @param int $statusCode the HTTP status code. Defaults to 302.
* See <https://tools.ietf.org/html/rfc2616#section-10>
* for details about HTTP status code
* @return Response the current response object
*/
public function redirect($url, $statusCode = 302)
{
// calling Url::to() here because Response::redirect() modifies route before calling Url::to()
return $this->response->redirect(Url::to($url), $statusCode);
}
/**
* Redirects the browser to the home page.
*
* You can use this method in an action by returning the [[Response]] directly:
*
* ```
* // stop executing this action and redirect to home page
* return $this->goHome();
* ```
*
* @return Response the current response object
*/
public function goHome()
{
return $this->response->redirect(Yii::$app->getHomeUrl());
}
/**
* Redirects the browser to the last visited page.
*
* You can use this method in an action by returning the [[Response]] directly:
*
* ```
* // stop executing this action and redirect to last visited page
* return $this->goBack();
* ```
*
* For this function to work you have to [[User::setReturnUrl()|set the return URL]] in appropriate places before.
*
* @param string|array|null $defaultUrl the default return URL in case it was not set previously.
* If this is null and the return URL was not set previously, [[Application::homeUrl]] will be redirected to.
* Please refer to [[User::setReturnUrl()]] on accepted format of the URL.
* @return Response the current response object
* @see User::getReturnUrl()
*/
public function goBack($defaultUrl = null)
{
return $this->response->redirect(Yii::$app->getUser()->getReturnUrl($defaultUrl));
}
/**
* Refreshes the current page.
* This method is a shortcut to [[Response::refresh()]].
*
* You can use it in an action by returning the [[Response]] directly:
*
* ```
* // stop executing this action and refresh the current page
* return $this->refresh();
* ```
*
* @param string $anchor the anchor that should be appended to the redirection URL.
* Defaults to empty. Make sure the anchor starts with '#' if you want to specify it.
* @return Response the response object itself
*/
public function refresh($anchor = '')
{
return $this->response->redirect($this->request->getUrl() . $anchor);
}
}