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<?php declare(strict_types=1); /* * The MIT License (MIT) * * Copyright (c) 2014-2021 Spomky-Labs * * This software may be modified and distributed under the terms * of the MIT license. See the LICENSE file for details. */ namespace Webauthn; use function array_key_exists; use Assert\Assertion; use Base64Url\Base64Url; use InvalidArgumentException; use function Safe\json_decode; use function Safe\sprintf; use Webauthn\TokenBinding\TokenBinding; class CollectedClientData { /** * @var string */ private $rawData; /** * @var mixed[] */ private $data; /** * @var string */ private $type; /** * @var string */ private $challenge; /** * @var string */ private $origin; /** * @var mixed[]|null */ private $tokenBinding; /** * @param mixed[] $data */ public function __construct(string $rawData, array $data) { $this->type = $this->findData($data, 'type'); $this->challenge = $this->findData($data, 'challenge', true, true); $this->origin = $this->findData($data, 'origin'); $this->tokenBinding = $this->findData($data, 'tokenBinding', false); $this->rawData = $rawData; $this->data = $data; } public static function createFormJson(string $data): self { $rawData = Base64Url::decode($data); $json = json_decode($rawData, true); Assertion::isArray($json, 'Invalid collected client data'); return new self($rawData, $json); } public function getType(): string { return $this->type; } public function getChallenge(): string { return $this->challenge; } public function getOrigin(): string { return $this->origin; } public function getTokenBinding(): ?TokenBinding { return null === $this->tokenBinding ? null : TokenBinding::createFormArray($this->tokenBinding); } public function getRawData(): string { return $this->rawData; } /** * @return string[] */ public function all(): array { return array_keys($this->data); } public function has(string $key): bool { return array_key_exists($key, $this->data); } /** * @return mixed */ public function get(string $key) { if (!$this->has($key)) { throw new InvalidArgumentException(sprintf('The key "%s" is missing', $key)); } return $this->data[$key]; } /** * @param mixed[] $json * * @return mixed|null */ private function findData(array $json, string $key, bool $isRequired = true, bool $isB64 = false) { if (!array_key_exists($key, $json)) { if ($isRequired) { throw new InvalidArgumentException(sprintf('The key "%s" is missing', $key)); } return; } return $isB64 ? Base64Url::decode($json[$key]) : $json[$key]; } }