2016-05-30 05:14:17 +05:30
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<?php
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namespace api\components\User;
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2016-05-31 03:33:30 +05:30
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use api\models\AccountIdentity;
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2016-05-30 05:14:17 +05:30
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use common\models\AccountSession;
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2016-06-05 19:31:35 +05:30
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use Emarref\Jwt\Algorithm\AlgorithmInterface;
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2016-05-30 05:14:17 +05:30
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use Emarref\Jwt\Algorithm\Hs256;
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use Emarref\Jwt\Claim;
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use Emarref\Jwt\Encryption\Factory as EncryptionFactory;
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2016-06-05 19:31:35 +05:30
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use Emarref\Jwt\Encryption\Factory;
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use Emarref\Jwt\Exception\VerificationException;
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2016-05-30 05:14:17 +05:30
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use Emarref\Jwt\Jwt;
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use Emarref\Jwt\Token;
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2016-06-05 19:31:35 +05:30
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use Emarref\Jwt\Verification\Context as VerificationContext;
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2016-05-30 05:14:17 +05:30
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use Yii;
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use yii\base\ErrorException;
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use yii\base\InvalidConfigException;
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use yii\web\IdentityInterface;
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use yii\web\User as YiiUserComponent;
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2016-06-05 19:31:35 +05:30
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/**
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* @property AccountSession|null $activeSession
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2016-07-17 23:16:04 +05:30
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* @property AccountIdentity|null $identity
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*
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* @method AccountIdentity|null getIdentity()
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2016-06-05 19:31:35 +05:30
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*/
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2016-05-30 05:14:17 +05:30
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class Component extends YiiUserComponent {
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public $secret;
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public $expirationTimeout = 3600; // 1h
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public function init() {
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parent::init();
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if (!$this->secret) {
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throw new InvalidConfigException('secret must be specified');
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}
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}
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/**
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* @param IdentityInterface $identity
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* @param bool $rememberMe
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*
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* @return LoginResult|bool
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* @throws ErrorException
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*/
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public function login(IdentityInterface $identity, $rememberMe = false) {
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if (!$this->beforeLogin($identity, false, $rememberMe)) {
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return false;
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}
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$this->switchIdentity($identity, 0);
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$id = $identity->getId();
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$ip = Yii::$app->request->userIP;
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2016-06-05 19:31:35 +05:30
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$token = $this->createToken($identity);
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2016-05-30 05:14:17 +05:30
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if ($rememberMe) {
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$session = new AccountSession();
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$session->account_id = $id;
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$session->setIp($ip);
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$session->generateRefreshToken();
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if (!$session->save()) {
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throw new ErrorException('Cannot save account session model');
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}
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2016-06-05 19:31:35 +05:30
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$token->addClaim(new SessionIdClaim($session->id));
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2016-05-30 05:14:17 +05:30
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} else {
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$session = null;
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2016-07-17 22:24:33 +05:30
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// Если мы не сохраняем сессию, то токен должен жить подольше, чтобы
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// не прогорала сессия во время работы с аккаунтом
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$token->addClaim(new Claim\Expiration(time() + 60 * 60 * 24 * 7));
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2016-05-30 05:14:17 +05:30
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}
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2016-06-05 19:31:35 +05:30
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$jwt = $this->serializeToken($token);
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2016-05-30 05:14:17 +05:30
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Yii::info("User '{$id}' logged in from {$ip}.", __METHOD__);
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$result = new LoginResult($identity, $jwt, $session);
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$this->afterLogin($identity, false, $rememberMe);
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return $result;
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}
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2016-05-31 03:33:30 +05:30
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public function renew(AccountSession $session) {
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$account = $session->account;
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$transaction = Yii::$app->db->beginTransaction();
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try {
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$identity = new AccountIdentity($account->attributes);
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2016-06-05 19:31:35 +05:30
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$token = $this->createToken($identity);
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$jwt = $this->serializeToken($token);
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2016-05-31 03:33:30 +05:30
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$result = new RenewResult($identity, $jwt);
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$session->setIp(Yii::$app->request->userIP);
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$session->last_refreshed_at = time();
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if (!$session->save()) {
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throw new ErrorException('Cannot update session info');
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}
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$transaction->commit();
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} catch (ErrorException $e) {
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$transaction->rollBack();
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throw $e;
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}
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return $result;
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}
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2016-06-05 19:31:35 +05:30
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/**
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* @param string $jwtString
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* @return Token распаршенный токен
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* @throws VerificationException если один из Claims не пройдёт проверку
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*/
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public function parseToken(string $jwtString) : Token {
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$hostInfo = Yii::$app->request->hostInfo;
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2016-05-30 05:14:17 +05:30
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$jwt = new Jwt();
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2016-06-05 19:31:35 +05:30
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$token = $jwt->deserialize($jwtString);
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$context = new VerificationContext(Factory::create($this->getAlgorithm()));
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$context->setAudience($hostInfo);
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$context->setIssuer($hostInfo);
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$jwt->verify($token, $context);
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2016-05-30 05:14:17 +05:30
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2016-06-05 19:31:35 +05:30
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return $token;
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2016-05-30 05:14:17 +05:30
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}
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/**
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2016-06-05 19:31:35 +05:30
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* Метод находит AccountSession модель, относительно которой был выдан текущий JWT токен.
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* В случае, если на пути поиска встретится ошибка, будет возвращено значение null. Возможные кейсы:
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* - Юзер не авторизован
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* - Почему-то нет заголовка с токеном
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* - Во время проверки токена возникла ошибка, что привело к исключению
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* - В токене не найдено ключа сессии. Такое возможно, если юзер выбрал "не запоминать меня" или просто старые
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* токены, без поддержки сохранения используемой сессии
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*
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* @return AccountSession|null
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*/
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2016-06-05 19:31:35 +05:30
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public function getActiveSession() {
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if ($this->getIsGuest()) {
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return null;
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}
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$authHeader = Yii::$app->request->getHeaders()->get('Authorization');
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if ($authHeader === null || !preg_match('/^Bearer\s+(.*?)$/', $authHeader, $matches)) {
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return null;
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}
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$token = $matches[1];
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try {
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$token = $this->parseToken($token);
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} catch (VerificationException $e) {
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return null;
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}
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$sessionId = $token->getPayload()->findClaimByName(SessionIdClaim::NAME);
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if ($sessionId === null) {
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return null;
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}
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return AccountSession::findOne($sessionId->getValue());
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}
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public function getAlgorithm() : AlgorithmInterface {
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2016-05-30 05:14:17 +05:30
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return new Hs256($this->secret);
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}
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2016-06-05 19:31:35 +05:30
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protected function serializeToken(Token $token) : string {
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return (new Jwt())->serialize($token, EncryptionFactory::create($this->getAlgorithm()));
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}
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protected function createToken(IdentityInterface $identity) : Token {
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$token = new Token();
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foreach($this->getClaims($identity) as $claim) {
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$token->addClaim($claim);
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}
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return $token;
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}
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2016-05-30 05:14:17 +05:30
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/**
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* @param IdentityInterface $identity
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* @return Claim\AbstractClaim[]
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*/
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protected function getClaims(IdentityInterface $identity) {
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$currentTime = time();
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$hostInfo = Yii::$app->request->hostInfo;
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return [
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new Claim\Audience($hostInfo),
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new Claim\Issuer($hostInfo),
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new Claim\IssuedAt($currentTime),
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new Claim\Expiration($currentTime + $this->expirationTimeout),
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new Claim\JwtId($identity->getId()),
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];
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}
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}
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