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<?php |
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namespace PhpAbac\Manager; |
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use PhpAbac\Model\AbstractAttribute; |
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use PhpAbac\Model\Attribute; |
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use PhpAbac\Model\EnvironmentAttribute; |
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class AttributeManager |
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{ |
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/** @var array **/ |
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private $attributes; |
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/** @var string Prefix to add before getter name (default)'get' */ |
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private $getter_prefix = 'get'; |
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/** @var string Function to apply on the getter name ( before adding prefix ) (default)'ucfirst' */ |
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private $getter_name_transformation_function = 'ucfirst'; |
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/** |
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* @param array $attributes |
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* @param array $options A List of option to configure This Abac Instance |
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* Options list : |
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* 'getter_prefix' => Prefix to add before getter name (default)'get' |
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* 'getter_name_transformation_function' => Function to apply on the getter name ( before adding prefix ) (default)'ucfirst' |
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*/ |
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public function __construct($attributes, $options = []) |
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{ |
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$this->attributes = $attributes; |
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$options = array_intersect_key( $options, array_flip( [ |
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'getter_prefix', |
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'getter_name_transformation_function', |
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] ) ); |
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foreach($options as $name => $value) { |
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$this->$name = $value; |
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} |
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} |
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/** |
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* @param string $attributeId |
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* @return \PhpAbac\Model\AbstractAttribute |
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*/ |
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public function getAttribute($attributeId) { |
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$attributeKeys = explode('.', $attributeId); |
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// The first element will be the attribute ID, then the field ID |
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$attributeId = array_shift($attributeKeys); |
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$attributeName = implode('.', $attributeKeys); |
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// The field ID is also the attribute object property |
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$attributeData = $this->attributes[$attributeId]; |
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return |
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($attributeId === 'environment') |
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? $this->getEnvironmentAttribute($attributeData, $attributeName) |
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: $this->getClassicAttribute($attributeData, $attributeName) |
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; |
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} |
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/** |
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* @param array $attributeData |
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* @param string $property |
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* @return \PhpAbac\Model\Attribute |
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*/ |
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private function getClassicAttribute($attributeData, $property) { |
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return |
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(new Attribute()) |
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->setName($attributeData['fields'][$property]['name']) |
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->setType($attributeData['type']) |
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->setProperty($property) |
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->setSlug($this->slugify($attributeData['fields'][$property]['name'])) |
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; |
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} |
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/** |
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* @param array $attributeData |
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* @param string $key |
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* @return \PhpAbac\Model\EnvironmentAttribute |
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*/ |
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private function getEnvironmentAttribute($attributeData, $key) { |
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return |
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(new EnvironmentAttribute()) |
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->setName($attributeData[$key]['name']) |
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->setType('environment') |
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->setVariableName($attributeData[$key]['variable_name']) |
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->setSlug($this->slugify($attributeData[$key]['name'])) |
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; |
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} |
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/** |
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* @param AbstractAttribute $attribute |
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* @param string $attributeType |
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* @param object $user |
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* @param object $object |
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* @return mixed |
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*/ |
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public function retrieveAttribute(AbstractAttribute $attribute, $user = null, $object = null, $getter_params = []) |
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{ |
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switch($attribute->getType()) { |
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case 'user': |
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return $this->retrieveClassicAttribute($attribute, $user, $getter_params); |
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case 'resource': |
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return $this->retrieveClassicAttribute($attribute, $object); |
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case 'environment': |
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return $this->retrieveEnvironmentAttribute($attribute); |
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} |
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} |
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/** |
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* @param Attribute $attribute |
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* @param object $object |
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* @return mixed |
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*/ |
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private function retrieveClassicAttribute(Attribute $attribute, $object, $getter_params = []) |
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{ |
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$propertyPath = explode('.', $attribute->getProperty()); |
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$propertyValue = $object; |
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foreach($propertyPath as $property) { |
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$getter = $this->getter_prefix.call_user_func($this->getter_name_transformation_function,$property); |
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// Use is_callable, instead of method_exists, to deal with __call magic method |
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if(!is_callable([$propertyValue,$getter])) { |
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throw new \InvalidArgumentException('There is no getter for the "'.$attribute->getProperty().'" attribute for object "'.get_class($propertyValue).'" with getter "'.$getter.'"'); |
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} |
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if ( ( $propertyValue = call_user_func_array( [ |
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$propertyValue, |
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$getter, |
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], isset( $getter_params[ $property ] ) ? $getter_params[ $property ] : [] ) ) === null |
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) { |
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return null; |
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} |
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} |
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return $propertyValue; |
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} |
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/** |
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* |
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* @param \PhpAbac\Model\EnvironmentAttribute $attribute |
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* @return mixed |
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*/ |
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private function retrieveEnvironmentAttribute(EnvironmentAttribute $attribute) { |
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return getenv($attribute->getVariableName()); |
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} |
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/* |
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* @param string $name |
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* @return string |
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*/ |
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public function slugify($name) |
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{ |
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// replace non letter or digits by - |
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$name = trim(preg_replace('~[^\\pL\d]+~u', '-', $name), '-'); |
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// transliterate |
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if (function_exists('iconv')) { |
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$name = iconv('utf-8', 'us-ascii//TRANSLIT', $name); |
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} |
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// remove unwanted characters |
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$name = preg_replace('~[^-\w]+~', '', strtolower($name)); |
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if (empty($name)) { |
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return 'n-a'; |
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} |
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return $name; |
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} |
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} |
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Kilix /
php-abac
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