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<?php |
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namespace PhpAbac; |
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use PhpAbac\Manager\AttributeManager; |
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use PhpAbac\Manager\PolicyRuleManager; |
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use PhpAbac\Manager\ConfigurationManager; |
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use PhpAbac\Manager\CacheManager; |
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use PhpAbac\Manager\ComparisonManager; |
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use Symfony\Component\Config\FileLocator; |
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use PhpAbac\Model\PolicyRuleAttribute; |
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class Abac |
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{ |
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/** @var \PhpAbac\Manager\ConfigurationManager **/ |
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private $configuration; |
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/** @var \PhpAbac\Manager\PolicyRuleManager **/ |
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private $policyRuleManager; |
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/** @var \PhpAbac\Manager\AttributeManager **/ |
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private $attributeManager; |
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/** @var \PhpAbac\Manager\CacheManager **/ |
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private $cacheManager; |
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/** @var \PhpAbac\Manager\ComparisonManager **/ |
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private $comparisonManager; |
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/** |
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* @param array $configPaths |
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*/ |
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public function __construct($configPaths) |
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{ |
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$this->configure($configPaths); |
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$this->attributeManager = new AttributeManager($this->configuration->getAttributes()); |
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$this->policyRuleManager = new PolicyRuleManager($this->attributeManager, $this->configuration->getRules()); |
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$this->cacheManager = new CacheManager(); |
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$this->comparisonManager = new ComparisonManager($this->attributeManager); |
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} |
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/** |
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* @param array $configPaths |
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*/ |
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public function configure($configPaths) { |
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$locator = new FileLocator($configPaths); |
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$this->configuration = new ConfigurationManager($locator); |
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$this->configuration->parseConfigurationFile($configPaths); |
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} |
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/** |
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* Return true if both user and object respects all the rules conditions |
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* If the objectId is null, policy rules about its attributes will be ignored |
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* In case of mismatch between attributes and expected values, |
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* an array with the concerned attributes slugs will be returned. |
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* |
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* Available options are : |
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* * dynamic_attributes: array |
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* * cache_result: boolean |
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* * cache_ttl: integer |
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* * cache_driver: string |
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* |
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* Available cache drivers are : |
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* * memory |
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* |
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* @param string $ruleName |
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* @param object $user |
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* @param object $resource |
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* @param array $options |
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* @return boolean|array |
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*/ |
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public function enforce($ruleName, $user, $resource = null, $options = []) { |
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// Retrieve cache value for the current rule and values if cache item is valid |
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if(($cacheResult = isset($options['cache_result']) && $options['cache_result'] === true) === true) { |
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$cacheItem = $this->cacheManager->getItem( |
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"$ruleName-{$user->getId()}-" . (($resource !== null) ? $resource->getId() : ''), |
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(isset($options['cache_driver'])) ? $options['cache_driver'] : null, |
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(isset($options['cache_ttl'])) ? $options['cache_ttl'] : null |
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); |
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// We check if the cache value s valid before returning it |
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if(($cacheValue = $cacheItem->get()) !== null) { |
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return $cacheValue; |
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} |
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} |
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$policyRule = $this->policyRuleManager->getRule($ruleName); |
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$rejectedAttributes = []; |
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foreach ($policyRule->getPolicyRuleAttributes() as $pra) { |
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$attribute = $pra->getAttribute(); |
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$attribute->setValue($this->attributeManager->retrieveAttribute($attribute, $user, $resource)); |
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$dynamicAttributes = (isset($options['dynamic_attributes'])) ? $options['dynamic_attributes'] : []; |
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if(count($pra->getExtraData()) > 0) { |
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$this->processExtraData($pra, $user, $resource); |
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} |
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$value = |
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($pra->getValue() === 'dynamic') |
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? $this->attributeManager->getDynamicAttribute($attribute->getSlug(), $dynamicAttributes) |
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: $pra->getValue() |
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; |
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if ($this->comparisonManager->compare( |
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$pra->getComparisonType(), |
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$pra->getComparison(), |
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$value, |
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$attribute->getValue(), |
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$pra->getExtraData() |
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) !== true) { |
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$rejectedAttributes[] = $attribute->getSlug(); |
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} |
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} |
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$result = (count($rejectedAttributes) === 0) ? : $rejectedAttributes; |
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if($cacheResult) { |
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$cacheItem->set($result); |
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$this->cacheManager->save($cacheItem); |
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} |
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return $result; |
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} |
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public function processExtraData(PolicyRuleAttribute $pra, $user, $resource) { |
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foreach($pra->getExtraData() as $key => $data) { |
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switch($key) { |
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case 'with': |
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$pra->removeExtraData('with'); |
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$subPolicyRuleAttributes = []; |
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foreach($this->policyRuleManager->processRuleAttributes($data) as $subPolicyRuleAttribute) { |
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$subPolicyRuleAttributes[] = $subPolicyRuleAttribute; |
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} |
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$pra->setValue($subPolicyRuleAttributes); |
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$pra->addExtraData('attribute', $pra->getAttribute()); |
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$pra->addExtraData('user', $user); |
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$pra->addExtraData('resource', $resource); |
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break; |
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} |
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} |
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} |
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} |
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Kilix /
php-abac
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