Current File : /home/graphicd/www/vebto/vendor/kreait/firebase-php/src/Firebase/Database/Reference/Validator.php
<?php
declare(strict_types=1);
namespace Kreait\Firebase\Database\Reference;
use Kreait\Firebase\Exception\InvalidArgumentException;
use Psr\Http\Message\UriInterface;
class Validator
{
public const MAX_DEPTH = 32;
public const MAX_KEY_SIZE = 768;
public const INVALID_KEY_CHARS = '.$#[]';
/**
* Checks the reference URI for invalid properties.
*
* @throws InvalidArgumentException on
*/
public function validateUri(UriInterface $uri): void
{
$path = \trim($uri->getPath(), '/');
$this->validateDepth($path);
foreach (\explode('/', $path) as $key) {
$this->validateKeySize($key);
$this->validateChars($key);
}
}
private function validateDepth(string $path): void
{
$depth = \mb_substr_count($path, '/') + 1;
if ($depth > self::MAX_DEPTH) {
throw new InvalidArgumentException(\sprintf(
'A reference location must not more than %d levels deep, "%s" has %d.',
self::MAX_DEPTH,
$path,
$depth
));
}
}
private function validateKeySize(string $key): void
{
if (($length = \mb_strlen($key, '8bit')) > self::MAX_KEY_SIZE) {
throw new InvalidArgumentException(\sprintf(
'A reference\'s child key must not be larger than %d bytes, "%s" has a size of %d bytes.',
self::MAX_KEY_SIZE,
$key,
$length
));
}
}
private function validateChars(string $key): void
{
$key = \rawurldecode($key);
$pattern = \sprintf('/[%s]/', \preg_quote(self::INVALID_KEY_CHARS, '/'));
if (\preg_match($pattern, $key)) {
throw new InvalidArgumentException(\sprintf(
'The child key "%s" contains one of the following invalid characters: "%s"',
$key,
self::INVALID_KEY_CHARS
));
}
}
}
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