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<?php |
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namespace Locastic\Component\ZxcvbnPasswordValidator\Validator\Constraints; |
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use Symfony\Component\Validator\Constraint; |
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use Symfony\Component\Validator\ConstraintValidator; |
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use Symfony\Component\Validator\Exception\UnexpectedTypeException; |
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use ZxcvbnPhp\Zxcvbn; |
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use Symfony\Component\Translation\Loader\XliffFileLoader; |
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use Symfony\Component\Translation\Translator; |
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use Symfony\Component\Translation\TranslatorInterface; |
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/** |
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* Password strength Validation. |
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* More info: https://blogs.dropbox.com/tech/2012/04/zxcvbn-realistic-password-strength-estimation/ |
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*/ |
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class ZxcvbnPasswordValidator extends ConstraintValidator |
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{ |
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private $translator; |
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public function __construct(TranslatorInterface $translator = null) |
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{ |
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// If translator is missing create a new translator. |
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// With the 'en' locale and 'validators' domain. |
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if (null === $translator) { |
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$translator = new Translator('en'); |
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$translator->addLoader('xlf', new XliffFileLoader()); |
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$translator->addResource( |
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'xlf', |
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dirname(dirname(__DIR__)).'/Resources/translations/validators.en.xlf', |
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'en', |
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'validators' |
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); |
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} |
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$this->translator = $translator; |
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} |
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public function validate($password, Constraint $constraint) |
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{ |
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if (null === $password || '' === $password) { |
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return; |
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} |
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if (!is_scalar($password) && !(is_object($password) && method_exists($password, '__toString'))) { |
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throw new UnexpectedTypeException($password, 'string'); |
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} |
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$zxcvbn = new Zxcvbn(); |
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$strength = $zxcvbn->passwordStrength($password); |
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if ($strength['entropy'] < $constraint->minEntropy) { |
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$parameters = [ |
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'{{ min_entropy }}' => $constraint->minEntropy, |
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'{{ current_entropy }}' => $strength['entropy'], |
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]; |
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$this->context->buildViolation($this->translator->trans($constraint->message, $parameters, 'validators')) |
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->setParameters($parameters) |
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->addViolation(); |
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} |
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} |
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} |
Locastic /
ZxcvbnPasswordValidator
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