110 lines
3.1 KiB
PHP
110 lines
3.1 KiB
PHP
<?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 Jose\Component\Signature\Serializer;
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use Base64Url\Base64Url;
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use Jose\Component\Core\Converter\JsonConverter;
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use Jose\Component\Signature\JWS;
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final class JSONFlattenedSerializer extends Serializer
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{
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public const NAME = 'jws_json_flattened';
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/**
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* @var JsonConverter|\Jose\Component\Core\Util\JsonConverter|null
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*/
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private $jsonConverter;
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/**
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* JSONFlattenedSerializer constructor.
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*/
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public function __construct(?JsonConverter $jsonConverter = null)
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{
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$this->jsonConverter = $jsonConverter ?? new \Jose\Component\Core\Util\JsonConverter();
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}
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public function displayName(): string
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{
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return 'JWS JSON Flattened';
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}
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public function name(): string
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{
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return self::NAME;
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}
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public function serialize(JWS $jws, ?int $signatureIndex = null): string
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{
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if (null === $signatureIndex) {
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$signatureIndex = 0;
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}
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$signature = $jws->getSignature($signatureIndex);
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$data = [];
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$values = [
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'payload' => $jws->getEncodedPayload(),
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'protected' => $signature->getEncodedProtectedHeader(),
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'header' => $signature->getHeader(),
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];
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foreach ($values as $key => $value) {
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if (!empty($value)) {
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$data[$key] = $value;
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}
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}
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$data['signature'] = Base64Url::encode($signature->getSignature());
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return $this->jsonConverter->encode($data);
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}
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public function unserialize(string $input): JWS
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{
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$data = $this->jsonConverter->decode($input);
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if (!\is_array($data) || !\array_key_exists('signature', $data)) {
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throw new \InvalidArgumentException('Unsupported input.');
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}
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$signature = Base64Url::decode($data['signature']);
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if (\array_key_exists('protected', $data)) {
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$encodedProtectedHeader = $data['protected'];
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$protectedHeader = $this->jsonConverter->decode(Base64Url::decode($data['protected']));
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} else {
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$encodedProtectedHeader = null;
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$protectedHeader = [];
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}
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if (\array_key_exists('header', $data)) {
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if (!\is_array($data['header'])) {
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throw new \InvalidArgumentException('Bad header.');
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}
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$header = $data['header'];
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} else {
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$header = [];
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}
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if (\array_key_exists('payload', $data)) {
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$encodedPayload = $data['payload'];
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$payload = $this->isPayloadEncoded($protectedHeader) ? Base64Url::decode($encodedPayload) : $encodedPayload;
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} else {
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$payload = null;
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$encodedPayload = null;
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}
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$jws = JWS::create($payload, $encodedPayload, null === $encodedPayload);
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$jws = $jws->addSignature($signature, $protectedHeader, $encodedProtectedHeader, $header);
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return $jws;
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}
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}
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