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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\authclient;
use yii\base\Action;
use yii\base\Exception;
use yii\base\InvalidConfigException;
use yii\base\NotSupportedException;
use yii\di\Instance;
use yii\helpers\Url;
use yii\web\Response;
use yii\web\HttpException;
use yii\web\NotFoundHttpException;
use Yii;
use yii\web\User;
/**
* AuthAction performs authentication via different auth clients.
* It supports [[OpenId]], [[OAuth1]] and [[OAuth2]] client types.
*
* Usage:
*
* ```php
* class SiteController extends Controller
* {
* public function actions()
* {
* return [
* 'auth' => [
* 'class' => 'yii\authclient\AuthAction',
* 'successCallback' => [$this, 'successCallback'],
* ],
* ]
* }
*
* public function successCallback($client)
* {
* $attributes = $client->getUserAttributes();
* // user login or signup comes here
* }
* }
* ```
*
* Usually authentication via external services is performed inside the popup window.
* This action handles the redirection and closing of popup window correctly.
*
* @see Collection
* @see \yii\authclient\widgets\AuthChoice
*
* @property string $cancelUrl Cancel URL.
* @property string $successUrl Successful URL.
*
* @author Paul Klimov <klimov.paul@gmail.com>
* @since 2.0
*/
class AuthAction extends Action
{
/**
* @var string name of the auth client collection application component.
* It should point to [[Collection]] instance.
*/
public $clientCollection = 'authClientCollection';
/**
* @var string name of the GET param, which is used to passed auth client id to this action.
* Note: watch for the naming, make sure you do not choose name used in some auth protocol.
*/
public $clientIdGetParamName = 'authclient';
/**
* @var callable PHP callback, which should be triggered in case of successful authentication.
* This callback should accept [[ClientInterface]] instance as an argument.
* For example:
*
* ```php
* public function onAuthSuccess(ClientInterface $client)
* {
* $attributes = $client->getUserAttributes();
* // user login or signup comes here
* }
* ```
*
* If this callback returns [[Response]] instance, it will be used as action response,
* otherwise redirection to [[successUrl]] will be performed.
*/
public $successCallback;
/**
* @var callable PHP callback, which should be triggered in case of authentication cancelation.
* This callback should accept [[ClientInterface]] instance as an argument.
* For example:
*
* ```php
* public function onAuthCancel(ClientInterface $client)
* {
* // set flash, logging, etc.
* }
* ```
*
* If this callback returns [[Response]] instance, it will be used as action response,
* otherwise redirection to [[cancelUrl]] will be performed.
*
* @since 2.1.5
*/
public $cancelCallback;
/**
* @var string name or alias of the view file, which should be rendered in order to perform redirection.
* If not set - default one will be used.
*/
public $redirectView;
/**
* @var User|array|string the User object or the application component ID of the user component.
* @since 2.1.8
*/
public $user = 'user';
/**
* @var string the redirect url after successful authorization.
*/
private $_successUrl;
/**
* @var string the redirect url after unsuccessful authorization (e.g. user canceled).
*/
private $_cancelUrl;
/**
* @inheritdoc
*/
public function init()
{
parent::init();
$this->user = Instance::ensure($this->user, User::className());
}
/**
* @param string $url successful URL.
*/
public function setSuccessUrl($url)
{
$this->_successUrl = $url;
}
/**
* @return string successful URL.
*/
public function getSuccessUrl()
{
if (empty($this->_successUrl)) {
$this->_successUrl = $this->defaultSuccessUrl();
}
return $this->_successUrl;
}
/**
* @param string $url cancel URL.
*/
public function setCancelUrl($url)
{
$this->_cancelUrl = $url;
}
/**
* @return string cancel URL.
*/
public function getCancelUrl()
{
if (empty($this->_cancelUrl)) {
$this->_cancelUrl = $this->defaultCancelUrl();
}
return $this->_cancelUrl;
}
/**
* Creates default [[successUrl]] value.
* @return string success URL value.
*/
protected function defaultSuccessUrl()
{
return $this->user->getReturnUrl();
}
/**
* Creates default [[cancelUrl]] value.
* @return string cancel URL value.
*/
protected function defaultCancelUrl()
{
return Url::to($this->user->loginUrl);
}
/**
* Runs the action.
*/
public function run()
{
$clientId = Yii::$app->getRequest()->getQueryParam($this->clientIdGetParamName);
if (!empty($clientId)) {
/* @var $collection \yii\authclient\Collection */
$collection = Yii::$app->get($this->clientCollection);
if (!$collection->hasClient($clientId)) {
throw new NotFoundHttpException("Unknown auth client '{$clientId}'");
}
$client = $collection->getClient($clientId);
return $this->auth($client);
}
throw new NotFoundHttpException();
}
/**
* Perform authentication for the given client.
* @param mixed $client auth client instance.
* @param array $authUrlParams additional auth GET params.
* @return Response response instance.
* @throws \yii\base\NotSupportedException on invalid client.
*/
protected function auth($client, $authUrlParams = [])
{
if ($client instanceof OAuth2) {
return $this->authOAuth2($client, $authUrlParams);
} elseif ($client instanceof OAuth1) {
return $this->authOAuth1($client, $authUrlParams);
} elseif ($client instanceof OpenId) {
return $this->authOpenId($client);
}
throw new NotSupportedException('Provider "' . get_class($client) . '" is not supported.');
}
/**
* This method is invoked in case of successful authentication via auth client.
* @param ClientInterface $client auth client instance.
* @throws InvalidConfigException on invalid success callback.
* @return Response response instance.
*/
protected function authSuccess($client)
{
if (!is_callable($this->successCallback)) {
throw new InvalidConfigException('"' . get_class($this) . '::$successCallback" should be a valid callback.');
}
$response = call_user_func($this->successCallback, $client);
if ($response instanceof Response) {
return $response;
}
return $this->redirectSuccess();
}
/**
* This method is invoked in case of authentication cancelation.
* @param ClientInterface $client auth client instance.
* @return Response response instance.
* @since 2.1.5
*/
protected function authCancel($client)
{
if ($this->cancelCallback !== null) {
$response = call_user_func($this->cancelCallback, $client);
if ($response instanceof Response) {
return $response;
}
}
return $this->redirectCancel();
}
/**
* Redirect to the given URL or simply close the popup window.
* @param mixed $url URL to redirect, could be a string or array config to generate a valid URL.
* @param bool $enforceRedirect indicates if redirect should be performed even in case of popup window.
* @return \yii\web\Response response instance.
*/
public function redirect($url, $enforceRedirect = true)
{
$viewFile = $this->redirectView;
if ($viewFile === null) {
$viewFile = __DIR__ . DIRECTORY_SEPARATOR . 'views' . DIRECTORY_SEPARATOR . 'redirect.php';
} else {
$viewFile = Yii::getAlias($viewFile);
}
$viewData = [
'url' => $url,
'enforceRedirect' => $enforceRedirect,
];
$response = Yii::$app->getResponse();
$response->content = Yii::$app->getView()->renderFile($viewFile, $viewData);
return $response;
}
/**
* Redirect to the URL. If URL is null, [[successUrl]] will be used.
* @param string $url URL to redirect.
* @return \yii\web\Response response instance.
*/
public function redirectSuccess($url = null)
{
if ($url === null) {
$url = $this->getSuccessUrl();
}
return $this->redirect($url);
}
/**
* Redirect to the [[cancelUrl]] or simply close the popup window.
* @param string $url URL to redirect.
* @return \yii\web\Response response instance.
*/
public function redirectCancel($url = null)
{
if ($url === null) {
$url = $this->getCancelUrl();
}
return $this->redirect($url, false);
}
/**
* Performs OpenID auth flow.
* @param OpenId $client auth client instance.
* @return Response action response.
* @throws Exception on failure.
* @throws HttpException on failure.
*/
protected function authOpenId($client)
{
$request = Yii::$app->getRequest();
$mode = $request->get('openid_mode', $request->post('openid_mode'));
if (empty($mode)) {
$url = $client->buildAuthUrl();
return Yii::$app->getResponse()->redirect($url);
}
switch ($mode) {
case 'id_res':
if ($client->validate()) {
return $this->authSuccess($client);
}
throw new HttpException(400, 'Unable to complete the authentication because the required data was not received.');
case 'cancel':
return $this->authCancel($client);
default:
throw new HttpException(400);
}
}
/**
* Performs OAuth1 auth flow.
* @param OAuth1 $client auth client instance.
* @param array $authUrlParams additional auth GET params.
* @return Response action response.
*/
protected function authOAuth1($client, $authUrlParams = [])
{
$request = Yii::$app->getRequest();
// user denied error
if ($request->get('denied') !== null) {
return $this->authCancel($client);
}
if (($oauthToken = $request->get('oauth_token', $request->post('oauth_token'))) !== null) {
// Upgrade to access token.
$client->fetchAccessToken($oauthToken);
return $this->authSuccess($client);
}
// Get request token.
$requestToken = $client->fetchRequestToken();
// Get authorization URL.
$url = $client->buildAuthUrl($requestToken, $authUrlParams);
// Redirect to authorization URL.
return Yii::$app->getResponse()->redirect($url);
}
/**
* Performs OAuth2 auth flow.
* @param OAuth2 $client auth client instance.
* @param array $authUrlParams additional auth GET params.
* @return Response action response.
* @throws \yii\base\Exception on failure.
*/
protected function authOAuth2($client, $authUrlParams = [])
{
$request = Yii::$app->getRequest();
if (($error = $request->get('error')) !== null) {
if (
$error === 'access_denied' ||
$error === 'user_cancelled_login' ||
$error === 'user_cancelled_authorize'
) {
// user denied error
return $this->authCancel($client);
}
// request error
$errorMessage = $request->get('error_description', $request->get('error_message'));
if ($errorMessage === null) {
$errorMessage = http_build_query($request->get());
}
throw new Exception('Auth error: ' . $errorMessage);
}
// Get the access_token and save them to the session.
if (($code = $request->get('code')) !== null) {
$token = $client->fetchAccessToken($code);
if (!empty($token)) {
return $this->authSuccess($client);
}
return $this->authCancel($client);
}
$url = $client->buildAuthUrl($authUrlParams);
return Yii::$app->getResponse()->redirect($url);
}
}