function CidrValidator::validate

Overrides ConstraintValidatorInterface::validate

File

vendor/symfony/validator/Constraints/CidrValidator.php, line 28

Class

CidrValidator

Validates whether a value is a CIDR notation.

Namespace

Symfony\Component\Validator\Constraints

Code

public function validate($value, Constraint $constraint) : void {
    if (!$constraint instanceof Cidr) {
        throw new UnexpectedTypeException($constraint, Cidr::class);
    }
    if (null === $value || '' === $value) {
        return;
    }
    if (!\is_string($value) && !$value instanceof \Stringable) {
        throw new UnexpectedValueException($value, 'string');
    }
    $value = (string) $value;
    if (null !== $constraint->normalizer) {
        $value = ($constraint->normalizer)($value);
    }
    $cidrParts = explode('/', $value, 2);
    if (!isset($cidrParts[1]) || !ctype_digit($cidrParts[1]) || '' === $cidrParts[0]) {
        $this->context
            ->buildViolation($constraint->message)
            ->setCode(Cidr::INVALID_CIDR_ERROR)
            ->addViolation();
        return;
    }
    $ipAddress = $cidrParts[0];
    $netmask = (int) $cidrParts[1];
    if (!IpValidator::checkIP($ipAddress, $constraint->version)) {
        $this->context
            ->buildViolation($constraint->message)
            ->setCode(Cidr::INVALID_CIDR_ERROR)
            ->addViolation();
        return;
    }
    $netmaskMax = $constraint->netmaskMax;
    if (filter_var($ipAddress, \FILTER_VALIDATE_IP, \FILTER_FLAG_IPV4) && $netmaskMax > 32) {
        $netmaskMax = 32;
    }
    if ($netmask < $constraint->netmaskMin || $netmask > $netmaskMax) {
        $this->context
            ->buildViolation($constraint->netmaskRangeViolationMessage)
            ->setParameter('{{ min }}', $constraint->netmaskMin)
            ->setParameter('{{ max }}', $netmaskMax)
            ->setCode(Cidr::OUT_OF_RANGE_ERROR)
            ->addViolation();
    }
}