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AlgHeaderChecker.php
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AlgHeaderChecker.php
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<?php
/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2018 Spomky-Labs
*
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
namespace SpomkyLabs\LexikJoseBundle\Checker;
use Jose\Component\Checker\HeaderChecker;
use Jose\Component\Checker\InvalidHeaderException;
/**
* Class AlgHeaderChecker.
*/
final class AlgHeaderChecker implements HeaderChecker
{
/**
* @var string
*/
private $algorithm;
/**
* AlgHeaderChecker constructor.
*
* @param string $algorithm
*/
public function __construct(string $algorithm)
{
$this->algorithm = $algorithm;
}
/**
* {@inheritdoc}
*/
public function checkHeader($algorithm)
{
if (!is_string($algorithm)) {
throw new InvalidHeaderException('The value of the header "alg" is not valid', 'alg', $algorithm);
}
if ($this->algorithm !== $algorithm) {
throw new InvalidHeaderException(sprintf('The algorithm "%s" is not known.', $algorithm), 'alg', $algorithm);
}
}
/**
* {@inheritdoc}
*/
public function supportedHeader(): string
{
return 'alg';
}
/**
* {@inheritdoc}
*/
public function protectedHeaderOnly(): bool
{
return true;
}
}