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<?php
declare(strict_types=1);
namespace GuzzleHttp\Psr7;
use Psr\Http\Message\UriInterface;
/**
* Provides methods to determine if a modified URL should be considered cross-origin.
*
* @author Graham Campbell
*/
final class UriComparator
{
/**
* Determines if a modified URL should be considered cross-origin with
* respect to an original URL.
*/
public static function isCrossOrigin(UriInterface $original, UriInterface $modified): bool
{
if (\strcasecmp($original->getHost(), $modified->getHost()) !== 0) {
return true;
}
if ($original->getScheme() !== $modified->getScheme()) {
return true;
}
if (self::computePort($original) !== self::computePort($modified)) {
return true;
}
return false;
}
private static function computePort(UriInterface $uri): int
{
$port = $uri->getPort();
if (null !== $port) {
return $port;
}
return 'https' === $uri->getScheme() ? 443 : 80;
}
private function __construct()
{
// cannot be instantiated
}
}
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