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<?php |
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/** |
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* This file is part of the Rate Limit package. |
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* |
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* Copyright (c) Nikola Posa |
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* |
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* For full copyright and license information, please refer to the LICENSE file, |
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* located at the package root folder. |
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*/ |
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declare(strict_types=1); |
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namespace RateLimit\Middleware\Identity; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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/** |
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* @author Vassilis Poursalidis <[email protected]> |
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*/ |
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final class IpAddressOrUserIdentityResolver extends AbstractIdentityResolver |
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{ |
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const IP_KEY_PREFIX = 'rlimit-ip-'; |
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const USER_KEY_PREFIX = 'rlimit-id-'; |
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/** |
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* @var array |
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*/ |
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protected $loadBalancers; |
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/** |
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* @var string |
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*/ |
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protected $authKeyName; |
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public function __construct(array $loadBalancers = [], string $authKeyName = 'authUserId') |
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{ |
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$this->loadBalancers = $loadBalancers; |
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$this->authKeyName = $authKeyName; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getIdentity(RequestInterface $request) : string |
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{ |
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if (!$request instanceof ServerRequestInterface) { |
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return self::getDefaultIdentity($request); |
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} |
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$serverParams = $request->getServerParams(); |
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$authUserId = $request->getAttribute($this->authKeyName); |
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if ( !empty($authUserId) ) { |
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return USER_KEY_PREFIX . $authUserId; |
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} |
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if ( !empty($serverParams['REMOTE_ADDR']) && in_array($serverParams['REMOTE_ADDR'], $this->loadBalancers) ) { |
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if (array_key_exists('HTTP_CLIENT_IP', $serverParams)) { |
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return self::IP_KEY_PREFIX . $serverParams['HTTP_CLIENT_IP']; |
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} |
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if (array_key_exists('HTTP_X_FORWARDED_FOR', $serverParams)) { |
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return self::IP_KEY_PREFIX . $serverParams['HTTP_X_FORWARDED_FOR']; |
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} |
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} |
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return $serverParams['REMOTE_ADDR'] ? (self::IP_KEY_PREFIX . $serverParams['REMOTE_ADDR']) : self::getDefaultIdentity($request); |
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} |
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} |
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nikolaposa /
rate-limit
