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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) 2014-2019 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 InvalidArgumentException; |
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use Jose\Component\Core\Util\JsonConverter; |
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use Jose\Component\Signature\JWS; |
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use LogicException; |
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use Throwable; |
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final class CompactSerializer extends Serializer |
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{ |
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public const NAME = 'jws_compact'; |
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public function displayName(): string |
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{ |
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return 'JWS Compact'; |
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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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/** |
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* @throws LogicException if the JWS has unprotected header (invalid for compact JSON) |
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* @throws LogicException if the payload is not encoded but contains unauthorized characters |
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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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if (0 !== \count($signature->getHeader())) { |
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throw new LogicException('The signature contains unprotected header parameters and cannot be converted into compact JSON.'); |
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} |
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$isEmptyPayload = null === $jws->getEncodedPayload() || '' === $jws->getEncodedPayload(); |
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if (!$this->isPayloadEncoded($signature->getProtectedHeader()) && !$isEmptyPayload) { |
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if (1 !== preg_match('/^[\x{20}-\x{2d}|\x{2f}-\x{7e}]*$/u', $jws->getPayload())) { |
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throw new LogicException('Unable to convert the JWS with non-encoded payload.'); |
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} |
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} |
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return sprintf( |
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'%s.%s.%s', |
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$signature->getEncodedProtectedHeader(), |
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$jws->getEncodedPayload(), |
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Base64Url::encode($signature->getSignature()) |
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); |
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} |
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/** |
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* @throws InvalidArgumentException if the input is invalid |
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*/ |
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public function unserialize(string $input): JWS |
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{ |
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$parts = explode('.', $input); |
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if (3 !== \count($parts)) { |
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throw new InvalidArgumentException('Unsupported input'); |
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} |
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try { |
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$encodedProtectedHeader = $parts[0]; |
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$protectedHeader = JsonConverter::decode(Base64Url::decode($parts[0])); |
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$hasPayload = '' !== $parts[1]; |
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if (!$hasPayload) { |
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$payload = null; |
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$encodedPayload = null; |
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} else { |
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$encodedPayload = $parts[1]; |
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$payload = $this->isPayloadEncoded($protectedHeader) ? Base64Url::decode($encodedPayload) : $encodedPayload; |
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} |
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$signature = Base64Url::decode($parts[2]); |
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$jws = new JWS($payload, $encodedPayload, !$hasPayload); |
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return $jws->addSignature($signature, $protectedHeader, $encodedProtectedHeader); |
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} catch (Throwable $throwable) { |
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throw new InvalidArgumentException('Unsupported input', $throwable->getCode(), $throwable); |
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} |
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} |
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} |
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web-token /
jwt-framework
