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Viewing / Editing File: StrictValidAt.php

<?php
declare(strict_types=1);

namespace Lcobucci\JWT\Validation\Constraint;

use DateInterval;
use DateTimeInterface;
use Lcobucci\JWT\Token;
use Lcobucci\JWT\UnencryptedToken;
use Lcobucci\JWT\Validation\ConstraintViolation;
use Lcobucci\JWT\Validation\ValidAt as ValidAtInterface;
use Psr\Clock\ClockInterface as Clock;

final class StrictValidAt implements ValidAtInterface
{
    private readonly DateInterval $leeway;

public function __construct(private readonly Clock $clock, ?DateInterval $leeway = null)
    {
        $this->leeway = $this->guardLeeway($leeway);
    }

private function guardLeeway(?DateInterval $leeway): DateInterval
    {
        if ($leeway === null) {
            return new DateInterval('PT0S');
        }

if ($leeway->invert === 1) {
            throw LeewayCannotBeNegative::create();
        }

return $leeway;
    }

public function assert(Token $token): void
    {
        if (! $token instanceof UnencryptedToken) {
            throw ConstraintViolation::error('You should pass a plain token', $this);
        }

$now = $this->clock->now();

$this->assertIssueTime($token, $now->add($this->leeway));
        $this->assertMinimumTime($token, $now->add($this->leeway));
        $this->assertExpiration($token, $now->sub($this->leeway));
    }

/** @throws ConstraintViolation */
    private function assertExpiration(UnencryptedToken $token, DateTimeInterface $now): void
    {
        if (! $token->claims()->has(Token\RegisteredClaims::EXPIRATION_TIME)) {
            throw ConstraintViolation::error('"Expiration Time" claim missing', $this);
        }

if ($token->isExpired($now)) {
            throw ConstraintViolation::error('The token is expired', $this);
        }
    }

/** @throws ConstraintViolation */
    private function assertMinimumTime(UnencryptedToken $token, DateTimeInterface $now): void
    {
        if (! $token->claims()->has(Token\RegisteredClaims::NOT_BEFORE)) {
            throw ConstraintViolation::error('"Not Before" claim missing', $this);
        }

if (! $token->isMinimumTimeBefore($now)) {
            throw ConstraintViolation::error('The token cannot be used yet', $this);
        }
    }

/** @throws ConstraintViolation */
    private function assertIssueTime(UnencryptedToken $token, DateTimeInterface $now): void
    {
        if (! $token->claims()->has(Token\RegisteredClaims::ISSUED_AT)) {
            throw ConstraintViolation::error('"Issued At" claim missing', $this);
        }

if (! $token->hasBeenIssuedBefore($now)) {
            throw ConstraintViolation::error('The token was issued in the future', $this);
        }
    }
}

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