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<?php |
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namespace Ma27\ApiKeyAuthenticationBundle\Service\Key; |
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use Doctrine\Common\Persistence\ObjectManager; |
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use Ma27\ApiKeyAuthenticationBundle\Service\Mapping\ClassMetadata; |
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/** |
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* Factory which generates the api keys. |
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*/ |
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class KeyFactory implements KeyFactoryInterface |
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{ |
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const MAX_API_KEY_GENERATION_ATTEMPTS = 200; |
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/** |
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* @var ObjectManager |
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*/ |
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private $om; |
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/** |
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* @var string |
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*/ |
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private $modelName; |
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/** |
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* @var ClassMetadata |
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*/ |
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private $metadata; |
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/** |
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* @var int |
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*/ |
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private $keyLength; |
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/** |
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* Constructor. |
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* |
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* @param ObjectManager $om |
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* @param string $modelName |
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* @param ClassMetadata $metadata |
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* @param int $keyLength |
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*/ |
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public function __construct(ObjectManager $om, $modelName, ClassMetadata $metadata, $keyLength = 200) |
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{ |
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$this->om = $om; |
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$this->modelName = (string) $modelName; |
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$this->metadata = $metadata; |
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$this->keyLength = (int) floor($keyLength / 2); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws \RuntimeException If no unique key can be created. |
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*/ |
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public function getKey() |
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{ |
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$repository = $this->om->getRepository($this->modelName); |
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$count = 0; |
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do { |
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++$count; |
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if ($count > static::MAX_API_KEY_GENERATION_ATTEMPTS) { |
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throw new \RuntimeException(sprintf( |
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'Unable to generate a new api key, stopping after %d tries!', |
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static::MAX_API_KEY_GENERATION_ATTEMPTS |
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)); |
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} |
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$key = $this->doGenerate(); |
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} while (null !== $repository->findOneBy(array($this->metadata->getPropertyName(ClassMetadata::API_KEY_PROPERTY) => $key))); |
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return $key; |
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} |
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/** |
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* Getter for the object manager. |
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* |
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* @return ObjectManager |
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*/ |
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protected function getOm() |
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{ |
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return $this->om; |
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} |
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/** |
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* Getter for the model name. |
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* |
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* @return string |
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*/ |
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protected function getModelName() |
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{ |
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return $this->modelName; |
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} |
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/** |
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* Getter for the api key property. |
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* |
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* @return ClassMetadata |
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*/ |
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protected function getMetadata() |
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{ |
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return $this->metadata; |
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} |
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/** |
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* Getter for the key length. |
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* |
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* @return int |
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*/ |
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protected function getKeyLength() |
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{ |
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return $this->keyLength; |
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} |
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/** |
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* Generates the bare key. |
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* |
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* @return string |
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*/ |
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8 |
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protected function doGenerate() |
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{ |
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return bin2hex(random_bytes($this->keyLength)); |
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} |
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} |
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