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<?php |
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declare(strict_types=1); |
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/* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2014-2018 Spomky-Labs |
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* |
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* This software may be modified and distributed under the terms |
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* of the MIT license. See the LICENSE file for details. |
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*/ |
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namespace U2FAuthentication\Fido2; |
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use Base64Url\Base64Url; |
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class CollectedClientData |
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{ |
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private $rawData; |
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private $data; |
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private $type; |
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private $challenge; |
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private $origin; |
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private $tokenBinding; |
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public function __construct(string $rawData, array $data) |
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{ |
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$validators = $this->dataValidators(); |
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foreach ($validators as $parameter => $validator) { |
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$this->$parameter = $validator($data); |
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} |
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$this->rawData = $rawData; |
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$this->data = $data; |
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} |
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public static function createFormJson(string $data): self |
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{ |
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$rawData = Base64Url::decode($data); |
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$json = \Safe\json_decode($rawData, true); |
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if (!\is_array($json)) { |
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throw new \InvalidArgumentException('Invalid collected client data'); |
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} |
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return new self($rawData, $json); |
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} |
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public function getType(): string |
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{ |
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return $this->type; |
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} |
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public function getChallenge(): string |
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{ |
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return $this->challenge; |
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} |
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public function getOrigin(): string |
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{ |
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return $this->origin; |
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} |
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public function getTokenBinding(): ?TokenBinding |
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{ |
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return $this->tokenBinding ? TokenBinding::createFormJson($this->tokenBinding) : null; |
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} |
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public function getRawData(): string |
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{ |
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return $this->rawData; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function all(): array |
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{ |
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return array_keys($this->data); |
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} |
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public function has(string $key): bool |
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{ |
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return array_key_exists($key, $this->data); |
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} |
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public function get(string $key) |
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{ |
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if (!$this->has($key)) { |
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throw new \InvalidArgumentException(\Safe\sprintf('The key "%s" is missing', $key)); |
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} |
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return $this->data[$key]; |
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} |
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/** |
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* @return callable[] |
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*/ |
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private function dataValidators(): array |
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{ |
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return [ |
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'type' => $this->requiredData('type'), |
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'challenge' => $this->requiredData('challenge', true), |
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'origin' => $this->requiredData('origin'), |
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'tokenBinding' => $this->optionalData('tokenBinding'), |
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]; |
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} |
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private function requiredData($key, bool $isB64 = false): callable |
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{ |
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return function ($json) use ($key, $isB64) { |
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if (!array_key_exists($key, $json)) { |
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throw new \InvalidArgumentException(\Safe\sprintf('The key "%s" is missing', $key)); |
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} |
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return $isB64 ? Base64Url::decode($json[$key]) : $json[$key]; |
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}; |
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} |
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private function optionalData($key): callable |
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{ |
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return function ($json) use ($key) { |
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if (!array_key_exists($key, $json)) { |
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return; |
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} |
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return $json[$key]; |
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}; |
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} |
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} |
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