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<?php |
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/** |
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* This file is part of graze/gigya-client |
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* |
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* Copyright (c) 2016 Nature Delivered Ltd. <https://www.graze.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @license https://github.com/graze/gigya-client/blob/master/LICENSE.md |
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* @link https://github.com/graze/gigya-client |
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*/ |
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namespace Graze\Gigya\Validation; |
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use Graze\Gigya\Exception\InvalidTimestampException; |
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use Graze\Gigya\Exception\InvalidUidSignatureException; |
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use Graze\Gigya\Response\ResponseInterface; |
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/** |
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* Class UidSignatureValidator. |
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*/ |
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class UidSignatureValidator implements ResponseValidatorInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $secret; |
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/** |
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* @var Signature |
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*/ |
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private $signature; |
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/** |
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* @param Signature $signature |
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* @param string $secret |
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*/ |
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public function __construct(Signature $signature, $secret) |
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{ |
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$this->secret = $secret; |
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$this->signature = $signature; |
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} |
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/** |
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* Can validate. |
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* |
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* @param ResponseInterface $response |
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* |
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* @return bool |
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*/ |
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public function canValidate(ResponseInterface $response) |
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{ |
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$data = $response->getData(); |
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return ($data->has('UID') && |
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$data->has('UIDSignature') && |
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$data->has('signatureTimestamp')); |
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} |
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/** |
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* Throws exceptions if any errors are found. |
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* |
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* @param ResponseInterface $response |
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* |
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* @return bool |
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*/ |
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public function validate(ResponseInterface $response) |
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{ |
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$data = $response->getData(); |
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return $this->validateUid( |
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$data->get('UID'), |
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$data->get('signatureTimestamp'), |
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$data->get('UIDSignature') |
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); |
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} |
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/** |
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* @param ResponseInterface $response |
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* |
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* @throws InvalidTimestampException |
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* @throws InvalidUidSignatureException |
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* |
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* @return void |
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*/ |
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public function assert(ResponseInterface $response) |
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{ |
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$data = $response->getData(); |
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$this->assertUid( |
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$data->get('UID'), |
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$data->get('signatureTimestamp'), |
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$data->get('UIDSignature'), |
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$response |
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); |
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} |
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/** |
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* Validate the provided Uid signature is valid. |
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* |
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* @param string $uid |
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* @param int $timestamp Unix Timestamp |
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* @param string $signature |
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* |
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* @return bool |
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*/ |
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public function validateUid($uid, $timestamp, $signature) |
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{ |
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return ($this->signature->checkTimestamp($timestamp) && |
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$signature == $this->signature->getUidSignature($uid, $timestamp, $this->secret)); |
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} |
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/** |
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* @param string $uid |
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* @param int $timestamp Unix Timestamp |
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* @param string $signature |
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* @param ResponseInterface $response |
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* |
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* @throws InvalidTimestampException |
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* @throws InvalidUidSignatureException |
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* |
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* @return bool |
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*/ |
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private function assertUid($uid, $timestamp, $signature, ResponseInterface $response) |
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{ |
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if (!$this->signature->checkTimestamp($timestamp)) { |
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throw new InvalidTimestampException($timestamp, $response); |
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} |
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$expected = $this->signature->getUidSignature($uid, $timestamp, $this->secret); |
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if ($signature !== $expected) { |
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throw new InvalidUidSignatureException($uid, $expected, $signature, $response); |
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} |
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1 |
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return true; |
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} |
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} |
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graze /
gigya-client
