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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Validator\Rule; |
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use InvalidArgumentException; |
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use RuntimeException; |
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use Yiisoft\NetworkUtilities\IpHelper; |
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use Yiisoft\Validator\Result; |
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use Yiisoft\Validator\ValidationContext; |
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use function is_string; |
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use Yiisoft\Validator\Exception\UnexpectedRuleException; |
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/** |
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* Checks if the value is a valid IPv4/IPv6 address or subnet. |
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* |
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* It also may change the value if normalization of IPv6 expansion is enabled. |
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*/ |
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final class IpHandler implements RuleHandlerInterface |
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{ |
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/** |
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* Negation char. |
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* |
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* Used to negate {@see $ranges} or {@see $network} or to negate validating value when {@see $allowNegation} |
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* is used. |
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*/ |
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private const NEGATION_CHAR = '!'; |
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public function validate(mixed $value, object $rule, ?ValidationContext $context = null): Result |
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{ |
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if (!$rule instanceof Ip) { |
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throw new UnexpectedRuleException(Ip::class, $rule); |
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} |
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if (!$rule->allowIpv4 && !$rule->allowIpv6) { |
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throw new RuntimeException('Both IPv4 and IPv6 checks can not be disabled at the same time.'); |
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} |
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$result = new Result(); |
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if (!is_string($value)) { |
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$result->addError($rule->message); |
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return $result; |
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} |
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if (preg_match($rule->getIpParsePattern(), $value, $matches) === 0) { |
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$result->addError($rule->message); |
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return $result; |
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} |
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$negation = !empty($matches['not'] ?? null); |
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$ip = $matches['ip']; |
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$cidr = $matches['cidr'] ?? null; |
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$ipCidr = $matches['ipCidr']; |
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try { |
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$ipVersion = IpHelper::getIpVersion($ip, false); |
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} catch (InvalidArgumentException $e) { |
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$result->addError($rule->message); |
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return $result; |
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} |
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if ($rule->requireSubnet === true && $cidr === null) { |
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$result->addError($rule->noSubnetMessage); |
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return $result; |
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} |
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if ($rule->allowSubnet === false && $cidr !== null) { |
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$result->addError($rule->hasSubnetMessage); |
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return $result; |
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} |
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if ($rule->allowNegation === false && $negation) { |
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$result->addError($rule->message); |
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return $result; |
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} |
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if ($ipVersion === IpHelper::IPV6 && !$rule->allowIpv6) { |
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$result->addError($rule->ipv6NotAllowedMessage); |
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return $result; |
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} |
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if ($ipVersion === IpHelper::IPV4 && !$rule->allowIpv4) { |
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$result->addError($rule->ipv4NotAllowedMessage); |
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return $result; |
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} |
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if (!$result->isValid()) { |
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return $result; |
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} |
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if ($cidr !== null) { |
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try { |
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IpHelper::getCidrBits($ipCidr); |
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} catch (InvalidArgumentException $e) { |
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$result->addError($rule->wrongCidrMessage); |
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return $result; |
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} |
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} |
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if (!$rule->isAllowed($ipCidr)) { |
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$result->addError($rule->notInRangeMessage); |
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return $result; |
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} |
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return $result; |
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} |
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/** |
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* Used to get the Regexp pattern for initial IP address parsing. |
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*/ |
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public function getIpParsePattern(): string |
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{ |
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return '/^(?<not>' . preg_quote( |
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self::NEGATION_CHAR, |
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'/' |
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) . ')?(?<ipCidr>(?<ip>(?:' . IpHelper::IPV4_PATTERN . ')|(?:' . IpHelper::IPV6_PATTERN . '))(?:\/(?<cidr>-?\d+))?)$/'; |
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} |
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} |
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