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<?php |
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/** |
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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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*/ |
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namespace App\Services; |
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use App\Configuration\PermissionsConfiguration; |
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use App\Entity\User; |
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use App\Security\Interfaces\HasPermissionsInterface; |
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use Sensio\Bundle\FrameworkExtraBundle\Configuration\Security; |
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use Symfony\Component\Config\Definition\Builder\TreeBuilder; |
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use Symfony\Component\Config\Definition\Processor; |
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use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface; |
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use Symfony\Component\Yaml\Yaml; |
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class PermissionResolver |
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{ |
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protected $permission_structure; |
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/** |
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* |
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* PermissionResolver constructor. |
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* @param ParameterBagInterface $params |
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*/ |
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public function __construct(ParameterBagInterface $params) |
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{ |
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//Read the permission config file... |
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$config = Yaml::parse( |
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file_get_contents(__DIR__ . '/../../config/permissions.yaml') |
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); |
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$configs = [$config]; |
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//... And parse it |
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$processor = new Processor(); |
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$databaseConfiguration = new PermissionsConfiguration(); |
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$processedConfiguration = $processor->processConfiguration( |
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$databaseConfiguration, |
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$configs |
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); |
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$this->permission_structure = $processedConfiguration; |
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} |
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/** |
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* Check if a user/group is allowed to do the specified operation for the permission. |
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* |
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* See permissions.yaml for valid permission operation combinations. |
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* |
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* @param HasPermissionsInterface $user The user/group for which the operation should be checked. |
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* @param string $permission The name of the permission for which should be checked. |
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* @param string $operation The name of the operation for which should be checked. |
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* @return bool|null True, if the user is allowed to do the operation (ALLOW), false if not (DISALLOW), and null, |
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* if the value is set to inherit. |
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*/ |
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public function dontInherit(HasPermissionsInterface $user, string $permission, string $operation) : ?bool |
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{ |
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//Get the permissions from the user |
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$perm_list = $user->getPermissions(); |
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//Determine bit number using our configuration |
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$bit = $this->permission_structure['perms'][$permission]['operations'][$operation]['bit']; |
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return $perm_list->getPermissionValue($permission, $bit); |
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} |
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/** |
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* Checks if a user is allowed to do the specified operation for the permission. |
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* In contrast to dontInherit() it tries to resolve the inherit values, of the user, by going upwards in the |
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* hierachy (user -> group -> parent group -> so on). But even in this case it is possible, that the inherit value |
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* could be resolved, and this function returns null. |
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* |
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* In that case the voter should set it manually to false by using ?? false. |
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* |
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* @param User $user The user for which the operation should be checked. |
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* @param string $permission The name of the permission for which should be checked. |
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* @param string $operation The name of the operation for which should be checked. |
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* @return bool|null True, if the user is allowed to do the operation (ALLOW), false if not (DISALLOW), and null, |
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* if the value is set to inherit. |
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*/ |
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public function inherit(User $user, string $permission, string $operation) : ?bool |
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{ |
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//Check if we need to inherit |
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$allowed = $this->dontInherit($user, $permission, $operation); |
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if ($allowed !== null) { |
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//Just return the value of the user. |
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return $allowed; |
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} |
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$parent = $user->getGroup(); |
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while($parent != null){ //The top group, has parent == null |
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//Check if our current element gives a info about disallow/allow |
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$allowed = $this->dontInherit($parent, $permission, $operation); |
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if ($allowed !== null) { |
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return $allowed; |
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} |
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//Else go up in the hierachy. |
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$parent = $parent->getParent(); |
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} |
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return null; //The inherited value is never resolved. Should be treat as false, in Voters. |
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} |
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/** |
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* Lists the names of all operations that is supported for the given permission. |
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* |
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* If the Permission is not existing at all, a exception is thrown. |
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* |
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* This function is useful for the support() function of the voters. |
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* |
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* @param string $permission The permission for which the |
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* @return string[] A list of all operations that are supported by the given |
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*/ |
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public function listOperationsForPermission(string $permission) : array |
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{ |
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$operations = $this->permission_structure['perms'][$permission]['operations']; |
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return array_keys($operations); |
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} |
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/** |
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* Checks if the permission with the given name is existing. |
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* |
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* @param string $permission The name of the permission which we want to check. |
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* @return bool True if a perm with that name is existing. False if not. |
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*/ |
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public function isValidPermission(string $permission) : bool |
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{ |
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return isset($this->permission_structure['perms'][$permission]); |
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} |
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} |
Part-DB /
Part-DB-symfony
This check looks for parameters that have been defined for a function or method, but which are not used in the method body.