<?php
declare(strict_types=1);
namespace ParagonIE\Paseto\Rules;
use ParagonIE\Paseto\{
JsonToken,
ValidationRuleInterface
};
use ParagonIE\Paseto\Exception\PasetoException;
/**
* Class NotExpired
* @package ParagonIE\Paseto\Rules
*/
class NotExpired implements ValidationRuleInterface
{
/** @var string $failure */
protected $failure = 'OK';
/** @var \DateTimeInterface $now */
protected $now;
/**
* NotExpired constructor.
* @param \DateTimeInterface|null $now Allows "now" to be overwritten for unit testing
*/
public function __construct(\DateTimeInterface $now = null)
{
if (!$now) {
$now = new \DateTime();
}
$this->now = $now;
}
/**
* @return string
*/
public function getFailureMessage(): string
{
return $this->failure;
}
/**
* @param JsonToken $token
* @return bool
*/
public function isValid(JsonToken $token): bool
{
try {
$expires = $token->getExpiration();
if ($expires < $this->now) {
$this->failure = 'This token has expired.';
return false;
}
} catch (PasetoException $ex) {
$this->failure = $ex->getMessage();
return false;
}
return true;
}
}
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