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<?php |
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/** |
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* @copyright Copyright (c) Flipbox Digital Limited |
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* @license https://flipboxfactory.com/software/jwt/license |
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* @link https://www.flipboxfactory.com/jwt/organization/ |
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*/ |
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namespace flipbox\craft\jwt\services; |
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use Craft; |
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use craft\elements\User; |
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use flipbox\craft\jwt\Jwt; |
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use flipbox\craft\jwt\helpers\TokenHelper; |
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use flipbox\craft\jwt\helpers\UserHelper; |
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use Lcobucci\JWT\Token; |
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use yii\base\Component; |
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use yii\web\IdentityInterface; |
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/** |
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* @author Flipbox Factory <[email protected]> |
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* @since 1.0.0 |
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*/ |
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class Identity extends Component |
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{ |
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/** |
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* Issue an authorization JWT token on behalf of a user. |
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* |
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* @param string $user |
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* @param string|null $audience |
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* @param int|null $expiration |
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* @return Token|null |
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* @throws \craft\errors\SiteNotFoundException |
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* @throws \yii\base\InvalidConfigException |
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*/ |
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public function issue( |
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$user = 'CURRENT_USER', |
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string $audience = null, |
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int $expiration = null |
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) { |
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if (null === ($identity = UserHelper::resolveUser($user))) { |
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$identity = new User(); |
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} |
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return Jwt::getInstance()->getBuilder() |
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->setIssuer(Jwt::getInstance()->getSettings()->getIssuer()) |
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->setAudience($this->resolveAudience($audience)) |
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->setId($identity->getId(), true) |
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->setIssuedAt(time()) |
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->setNotBefore(time()) |
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->setExpiration($this->resolveTokenExpiration($expiration)) |
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->set(TokenHelper::CLAIM_CSRF, Craft::$app->getRequest()->getCsrfToken()) |
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->sign(Jwt::getInstance()->getSettings()->getSigner(), TokenHelper::getSignatureKey($identity)) |
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->getToken(); |
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} |
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/** |
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* This |
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* @param string $token |
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* @return bool|null|IdentityInterface |
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* @throws \craft\errors\SiteNotFoundException |
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*/ |
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public function claim(string $token) |
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{ |
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if (null === ($token = $this->parse($token))) { |
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return false; |
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} |
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return $this->tokenIdentity($token); |
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} |
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/** |
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* @param $token |
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* @param bool $validate |
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* @param bool $verify |
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* @return Token|null |
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* @throws \craft\errors\SiteNotFoundException |
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*/ |
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public function parse(string $token, bool $validate = true, bool $verify = true) |
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{ |
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if (null === ($token = TokenHelper::parse($token, $validate))) { |
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return null; |
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} |
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if ($verify && !$this->verifyToken($token)) { |
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return null; |
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} |
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return $token; |
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} |
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/** |
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* @param Token $token |
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* @return bool |
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* @throws \craft\errors\SiteNotFoundException |
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*/ |
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public function verifyToken(Token $token): bool |
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{ |
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if (null === ($identity = UserHelper::resolveUser($token->getClaim(TokenHelper::CLAIM_IDENTITY)))) { |
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$identity = new User(); |
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} |
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return TokenHelper::verifyTokenCsrfClaim($token) && |
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TokenHelper::verifyIssuer($token, Jwt::getInstance()->getSettings()->getIdentityIssuers()) && |
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TokenHelper::verifyAudience($token) && |
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TokenHelper::verifyTokenSignature($token, $identity); |
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} |
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/** |
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* @param Token $token |
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* @return null|IdentityInterface |
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*/ |
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private function tokenIdentity(Token $token) |
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{ |
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return UserHelper::resolveUser($token->getClaim(TokenHelper::CLAIM_IDENTITY)); |
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} |
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/** |
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* @param string|null $audience |
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* @return string |
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* @throws \craft\errors\SiteNotFoundException |
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*/ |
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private function resolveAudience(string $audience = null): string |
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{ |
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if ($audience === null) { |
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$audience = Jwt::getInstance()->getSettings()->getIdentityAudience(); |
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} |
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return (string)$audience; |
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} |
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/** |
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* @param int|null $expiration |
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* @return int |
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* @throws \yii\base\InvalidConfigException |
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*/ |
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private function resolveTokenExpiration(int $expiration = null): int |
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{ |
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if ($expiration === null) { |
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$expiration = Jwt::getInstance()->getSettings()->getIdentityTokenDuration(); |
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} |
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return time() + (int)$expiration; |
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} |
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} |
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