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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 Yiisoft\Validator\Result; |
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use Yiisoft\Validator\ValidationContext; |
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use function is_string; |
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use function strlen; |
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use Yiisoft\Validator\Exception\UnexpectedRuleException; |
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/** |
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* Validates that the value is a valid HTTP or HTTPS URL. |
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* |
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* Note that this rule only checks if the URL scheme and host part are correct. |
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* It does not check the remaining parts of a URL. |
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*/ |
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final class UrlHandler implements RuleHandlerInterface |
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{ |
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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 Url) { |
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throw new UnexpectedRuleException(Url::class, $rule); |
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} |
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$result = new Result(); |
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// make sure the length is limited to avoid DOS attacks |
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if (is_string($value) && strlen($value) < 2000) { |
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if ($rule->enableIDN) { |
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$value = $this->convertIdn($value); |
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} |
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if (preg_match($rule->getPattern(), $value)) { |
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return $result; |
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} |
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} |
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$result->addError($rule->message); |
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return $result; |
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} |
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private function idnToAscii(string $idn): string |
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{ |
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$result = idn_to_ascii($idn, 0, INTL_IDNA_VARIANT_UTS46); |
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return $result === false ? '' : $result; |
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} |
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private function convertIdn(string $value): string |
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{ |
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if (!str_contains($value, '://')) { |
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return $this->idnToAscii($value); |
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} |
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return preg_replace_callback( |
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'/:\/\/([^\/]+)/', |
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fn ($matches) => '://' . $this->idnToAscii($matches[1]), |
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$value |
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); |
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} |
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} |
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yiisoft /
validator
