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<?php |
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/** |
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* part-db version 0.1 |
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* Copyright (C) 2005 Christoph Lechner |
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* http://www.cl-projects.de/. |
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* |
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* part-db version 0.2+ |
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* Copyright (C) 2009 K. Jacobs and others (see authors.php) |
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* http://code.google.com/p/part-db/ |
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* |
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* Part-DB Version 0.4+ |
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* Copyright (C) 2016 - 2019 Jan Böhmer |
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* https://github.com/jbtronics |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
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*/ |
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namespace App\Security\EntityListeners; |
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use App\Entity\Base\DBElement; |
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use App\Security\Annotations\ColumnSecurity; |
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use Doctrine\Common\Annotations\Reader; |
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use Doctrine\Common\Collections\Collection; |
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use Doctrine\Common\Persistence\Event\LifecycleEventArgs; |
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use Doctrine\ORM\EntityManager; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Doctrine\ORM\Event\PreFlushEventArgs; |
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use Doctrine\ORM\Event\PreUpdateEventArgs; |
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use Doctrine\ORM\Mapping as ORM; |
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use Doctrine\ORM\Mapping\PostLoad; |
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use Doctrine\ORM\Mapping\PreUpdate; |
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use ReflectionClass; |
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use Symfony\Component\Security\Core\Security; |
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/** |
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* The purpose of this class is to hook into the doctrine entity lifecycle and restrict access to entity informations |
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* configured by ColoumnSecurity Annotation. |
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* |
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* If a user does not have access to an coloumn, it will be filled, with a placeholder, after doctrine loading is finished. |
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* The edit process is also catched, so that these placeholders, does not get saved to database. |
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*/ |
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class ElementPermissionListener |
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{ |
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protected $security; |
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protected $reader; |
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protected $em; |
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public function __construct(Security $security, Reader $reader, EntityManagerInterface $em) |
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{ |
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$this->security = $security; |
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$this->reader = $reader; |
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$this->em = $em; |
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} |
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/** |
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* @PostLoad |
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* @ORM\PostUpdate() |
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* This function is called after doctrine filled, the entity properties with db values. |
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* We use this, to check if the user is allowed to access these properties, and if not, we write a placeholder |
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* into the element properties, so that a user only gets non sensitve data. |
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* |
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* This function is also called after an entity was updated, so we dont show the original data to user, |
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* after an update. |
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*/ |
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public function postLoadHandler(DBElement $element, LifecycleEventArgs $event) |
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{ |
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//Read Annotations and properties. |
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$reflectionClass = new ReflectionClass($element); |
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$properties = $reflectionClass->getProperties(); |
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foreach ($properties as $property) { |
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/** |
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* @var ColumnSecurity |
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*/ |
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$annotation = $this->reader->getPropertyAnnotation( |
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$property, |
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ColumnSecurity::class |
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); |
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//Check if user is allowed to read info, otherwise apply placeholder |
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if ((null !== $annotation) && !$this->security->isGranted($annotation->getReadOperationName(), $element)) { |
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$property->setAccessible(true); |
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$value = $annotation->getPlaceholder(); |
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//Detach placeholder entities, so we dont get cascade errors |
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if ($value instanceof DBElement) { |
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$this->em->detach($value); |
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} |
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$property->setValue($element, $value); |
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} |
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} |
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} |
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/** |
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* @ORM\PreFlush() |
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* This function is called before flushing. We use it, to remove all placeholders. |
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* We do it here and not in preupdate, because this is called before calculating the changeset, |
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* and so we dont get problems with orphan removal. |
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*/ |
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public function preFlushHandler(DBElement $element, PreFlushEventArgs $eventArgs) |
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{ |
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$em = $eventArgs->getEntityManager(); |
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$unitOfWork = $eventArgs->getEntityManager()->getUnitOfWork(); |
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$reflectionClass = new ReflectionClass($element); |
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$properties = $reflectionClass->getProperties(); |
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$old_data = $unitOfWork->getOriginalEntityData($element); |
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foreach ($properties as $property) { |
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$annotation = $this->reader->getPropertyAnnotation( |
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$property, |
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ColumnSecurity::class |
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); |
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$changed = false; |
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//Only set the field if it has an annotation |
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if (null !== $annotation) { |
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$property->setAccessible(true); |
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//If the user is not allowed to edit or read this property, reset all values. |
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if ((!$this->security->isGranted($annotation->getEditOperationName(), $element) |
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|| !$this->security->isGranted($annotation->getReadOperationName(), $element))) { |
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//Set value to old value, so that there a no change to this property |
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if (isset($old_data[$property->getName()])) { |
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$property->setValue($element, $old_data[$property->getName()]); |
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$changed = true; |
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} |
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} |
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if ($changed) { |
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//Schedule for update, so the post update method will be called |
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$unitOfWork->scheduleForUpdate($element); |
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} |
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} |
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} |
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} |
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} |
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Part-DB /
Part-DB-symfony
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