laipower/wp-content/plugins/wp-webauthn/vendor/web-token/jwt-signature/Serializer/JSONFlattenedSerializer.php

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<?php
declare(strict_types=1);
/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2020 Spomky-Labs
*
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
namespace Jose\Component\Signature\Serializer;
use Base64Url\Base64Url;
use function count;
use InvalidArgumentException;
use function is_array;
use Jose\Component\Core\Util\JsonConverter;
use Jose\Component\Signature\JWS;
final class JSONFlattenedSerializer extends Serializer
{
public const NAME = 'jws_json_flattened';
public function displayName(): string
{
return 'JWS JSON Flattened';
}
public function name(): string
{
return self::NAME;
}
public function serialize(JWS $jws, ?int $signatureIndex = null): string
{
if (null === $signatureIndex) {
$signatureIndex = 0;
}
$signature = $jws->getSignature($signatureIndex);
$data = [];
$values = [
'payload' => $jws->getEncodedPayload(),
'protected' => $signature->getEncodedProtectedHeader(),
'header' => $signature->getHeader(),
];
$encodedPayload = $jws->getEncodedPayload();
if (null !== $encodedPayload && '' !== $encodedPayload) {
$data['payload'] = $encodedPayload;
}
$encodedProtectedHeader = $signature->getEncodedProtectedHeader();
if (null !== $encodedProtectedHeader && '' !== $encodedProtectedHeader) {
$data['protected'] = $encodedProtectedHeader;
}
$header = $signature->getHeader();
if (0 !== count($header)) {
$data['header'] = $header;
}
$data['signature'] = Base64Url::encode($signature->getSignature());
return JsonConverter::encode($data);
}
/**
* @throws InvalidArgumentException if the input is not supported
* @throws InvalidArgumentException if the JWS header is invalid
*/
public function unserialize(string $input): JWS
{
$data = JsonConverter::decode($input);
if (!is_array($data)) {
throw new InvalidArgumentException('Unsupported input.');
}
if (!isset($data['signature'])) {
throw new InvalidArgumentException('Unsupported input.');
}
$signature = Base64Url::decode($data['signature']);
if (isset($data['protected'])) {
$encodedProtectedHeader = $data['protected'];
$protectedHeader = JsonConverter::decode(Base64Url::decode($data['protected']));
} else {
$encodedProtectedHeader = null;
$protectedHeader = [];
}
if (isset($data['header'])) {
if (!is_array($data['header'])) {
throw new InvalidArgumentException('Bad header.');
}
$header = $data['header'];
} else {
$header = [];
}
if (isset($data['payload'])) {
$encodedPayload = $data['payload'];
$payload = $this->isPayloadEncoded($protectedHeader) ? Base64Url::decode($encodedPayload) : $encodedPayload;
} else {
$payload = null;
$encodedPayload = null;
}
$jws = new JWS($payload, $encodedPayload, null === $encodedPayload);
return $jws->addSignature($signature, $protectedHeader, $encodedProtectedHeader, $header);
}
}