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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2020 (original work) Open Assessment Technologies SA; |
| 19 | */ |
| 20 | |
| 21 | declare(strict_types=1); |
| 22 | |
| 23 | namespace oat\taoQtiTest\models\creator; |
| 24 | |
| 25 | use common_exception_Error; |
| 26 | use common_session_AnonymousSession; |
| 27 | use common_session_Session; |
| 28 | use oat\oatbox\session\SessionService; |
| 29 | use oat\tao\model\resources\ResourceService; |
| 30 | |
| 31 | trait PermissionLookupTrait |
| 32 | { |
| 33 | /** |
| 34 | * @var array |
| 35 | */ |
| 36 | private $permissions; |
| 37 | |
| 38 | /** |
| 39 | * @param array $nodes |
| 40 | * @return array |
| 41 | * @throws common_exception_Error |
| 42 | */ |
| 43 | protected function fillPermissions(array $nodes): array |
| 44 | { |
| 45 | $permissions = $this->getPermissions($nodes); |
| 46 | if (is_array($permissions) && array_key_exists('data', $permissions) && is_array($permissions['data'])) { |
| 47 | $rules = $permissions['data']; |
| 48 | $rights = isset($permissions['supportedRights']) && count($permissions['supportedRights']) |
| 49 | ? $permissions['supportedRights'] |
| 50 | : false; |
| 51 | if ($rights) { |
| 52 | $self = $this; |
| 53 | $nodes = array_map(static function ($node) use ($rules, $self, $rights) { |
| 54 | if (is_array($node)) { |
| 55 | if (array_key_exists('children', $node)) { |
| 56 | $node['children'] = $self->fillPermissions($node['children']); |
| 57 | } |
| 58 | if (array_key_exists('uri', $node)) { |
| 59 | $node['accessMode'] = $self->getAccessMode($rules, $rights, $node['uri']); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | return $node; |
| 64 | }, $nodes); |
| 65 | } |
| 66 | } |
| 67 | return $nodes; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * partial|denied|allowed |
| 72 | * @param array $rules |
| 73 | * @param array $supportedRights |
| 74 | * @param string $uri |
| 75 | * @return string |
| 76 | */ |
| 77 | private function getAccessMode(array $rules, array $supportedRights, string $uri): string |
| 78 | { |
| 79 | $itemRules = array_key_exists($uri, $rules) ? $rules[$uri] : []; |
| 80 | if ( |
| 81 | count($supportedRights) === 0 |
| 82 | || $itemRules == $supportedRights |
| 83 | || (in_array('GRANT', $itemRules, true)) |
| 84 | ) { |
| 85 | return 'allowed'; |
| 86 | } |
| 87 | |
| 88 | if (!count($itemRules)) { |
| 89 | return 'denied'; |
| 90 | } |
| 91 | |
| 92 | return 'partial'; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * @param array $resources |
| 97 | * @return array |
| 98 | */ |
| 99 | private function getPermissions(array $resources): array |
| 100 | { |
| 101 | if (!$this->permissions) { |
| 102 | //retrieve resources permissions |
| 103 | $user = $this->getSession() ? $this->getSession()->getUser() : null; |
| 104 | |
| 105 | $this->permissions = $user ? $this->getResourceService()->getResourcesPermissions($user, $resources) : []; |
| 106 | } |
| 107 | |
| 108 | return $this->permissions; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * @return common_session_AnonymousSession|common_session_Session|null |
| 113 | */ |
| 114 | private function getSession(): common_session_Session |
| 115 | { |
| 116 | return $this->getServiceLocator()->get(SessionService::SERVICE_ID)->getCurrentSession(); |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * @return ResourceService|object |
| 121 | */ |
| 122 | protected function getResourceService(): ResourceService |
| 123 | { |
| 124 | return $this->getServiceLocator()->get(ResourceService::SERVICE_ID); |
| 125 | } |
| 126 | } |