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<?php |
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declare(strict_types=1); |
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namespace Shlinkio\Shlink\Core\Model; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Shlinkio\Shlink\Common\Middleware\IpAddressMiddlewareFactory; |
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use function substr; |
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final class Visitor |
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{ |
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public const USER_AGENT_MAX_LENGTH = 512; |
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public const REFERER_MAX_LENGTH = 1024; |
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public const REMOTE_ADDRESS_MAX_LENGTH = 256; |
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/** @var string */ |
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private $userAgent; |
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/** @var string */ |
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private $referer; |
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/** @var string|null */ |
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private $remoteAddress; |
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public function __construct(string $userAgent, string $referer, ?string $remoteAddress) |
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{ |
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$this->userAgent = $this->cropToLength($userAgent, self::USER_AGENT_MAX_LENGTH); |
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$this->referer = $this->cropToLength($referer, self::REFERER_MAX_LENGTH); |
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$this->remoteAddress = $this->cropToLength($remoteAddress, self::REMOTE_ADDRESS_MAX_LENGTH); |
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} |
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private function cropToLength(?string $value, int $length): ?string |
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{ |
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return $value === null ? null : substr($value, 0, $length); |
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} |
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public static function fromRequest(ServerRequestInterface $request): self |
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{ |
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return new self( |
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$request->getHeaderLine('User-Agent'), |
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$request->getHeaderLine('Referer'), |
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$request->getAttribute(IpAddressMiddlewareFactory::REQUEST_ATTR) |
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); |
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} |
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public static function emptyInstance(): self |
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{ |
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return new self('', '', null); |
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} |
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public function getUserAgent(): string |
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{ |
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return $this->userAgent; |
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} |
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public function getReferer(): string |
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{ |
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return $this->referer; |
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} |
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public function getRemoteAddress(): ?string |
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{ |
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return $this->remoteAddress; |
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} |
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} |
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shlinkio /
shlink
