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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\tao\model\security\Business\Domain; |
| 24 | |
| 25 | use ArrayIterator; |
| 26 | use IteratorAggregate; |
| 27 | use oat\tao\model\security\DataAccess\Repository\SecuritySettingsRepository; |
| 28 | use Traversable; |
| 29 | |
| 30 | final class SettingsCollection implements IteratorAggregate |
| 31 | { |
| 32 | private const DEPENDENT_SETTINGS = [ |
| 33 | SecuritySettingsRepository::CONTENT_SECURITY_POLICY_WHITELIST => [ |
| 34 | SecuritySettingsRepository::CONTENT_SECURITY_POLICY => 'list', |
| 35 | ], |
| 36 | ]; |
| 37 | |
| 38 | /** @var Setting[] */ |
| 39 | private $settings; |
| 40 | |
| 41 | public function __construct(Setting ...$settings) |
| 42 | { |
| 43 | $this->settings = array_combine( |
| 44 | array_map([$this, 'extractKey'], $settings), |
| 45 | $settings |
| 46 | ); |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * @return Traversable|Setting[] |
| 51 | */ |
| 52 | public function getIterator(): Traversable |
| 53 | { |
| 54 | return new ArrayIterator( |
| 55 | array_filter($this->settings, [$this, 'hasMetDependencies']) |
| 56 | ); |
| 57 | } |
| 58 | |
| 59 | public function findContentSecurityPolicy(): Setting |
| 60 | { |
| 61 | return $this->extractSetting(SecuritySettingsRepository::CONTENT_SECURITY_POLICY); |
| 62 | } |
| 63 | |
| 64 | public function findContentSecurityPolicyWhitelist(): Setting |
| 65 | { |
| 66 | return $this->extractSetting(SecuritySettingsRepository::CONTENT_SECURITY_POLICY_WHITELIST); |
| 67 | } |
| 68 | |
| 69 | public function findTransportSecurity(): Setting |
| 70 | { |
| 71 | return $this->settings[SecuritySettingsRepository::STRICT_TRANSPORT_SECURITY]; |
| 72 | } |
| 73 | |
| 74 | private function extractKey(Setting $setting): string |
| 75 | { |
| 76 | return $setting->getKey(); |
| 77 | } |
| 78 | |
| 79 | private function extractSetting(string $key): Setting |
| 80 | { |
| 81 | return $this->settings[$key] ?? new Setting($key, ''); |
| 82 | } |
| 83 | |
| 84 | private function hasMetDependencies(Setting $setting): bool |
| 85 | { |
| 86 | foreach (self::DEPENDENT_SETTINGS[$setting->getKey()] ?? [] as $dependencyKey => $dependencyValue) { |
| 87 | if ($this->extractSetting($dependencyKey)->getValue() !== $dependencyValue) { |
| 88 | return false; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | return true; |
| 93 | } |
| 94 | } |