<?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];
}
}