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| 1 | <?php |
| 2 | /** |
| 3 | * Jingga |
| 4 | * |
| 5 | * PHP Version 8.1 |
| 6 | * |
| 7 | * @package phpOMS\Security |
| 8 | * @copyright Dennis Eichhorn |
| 9 | * @license OMS License 2.0 |
| 10 | * @version 1.0.0 |
| 11 | * @link https://jingga.app |
| 12 | */ |
| 13 | declare(strict_types=1); |
| 14 | |
| 15 | namespace phpOMS\Security; |
| 16 | |
| 17 | use phpOMS\System\File\FileUtils; |
| 18 | |
| 19 | /** |
| 20 | * Php code security class. |
| 21 | * |
| 22 | * This can be used to guard against certain vulnerabilities |
| 23 | * |
| 24 | * @package phpOMS\Security |
| 25 | * @license OMS License 2.0 |
| 26 | * @link https://jingga.app |
| 27 | * @since 1.0.0 |
| 28 | */ |
| 29 | final class Guard |
| 30 | { |
| 31 | /** |
| 32 | * Base path for the application |
| 33 | * |
| 34 | * @var string |
| 35 | * @since 1.0.0 |
| 36 | */ |
| 37 | public static string $BASE_PATH = __DIR__ . '/../../'; |
| 38 | |
| 39 | /** |
| 40 | * Make sure a path is part of a base path |
| 41 | * |
| 42 | * This can be used to verify if a path goes outside of the allowed path bounds |
| 43 | * |
| 44 | * @param string $path Path to check |
| 45 | * @param string $base Base path |
| 46 | * |
| 47 | * @return bool |
| 48 | * |
| 49 | * @since 1.0.0 |
| 50 | */ |
| 51 | public static function isSafePath(string $path, string $base = '') : bool |
| 52 | { |
| 53 | return \str_starts_with( |
| 54 | FileUtils::absolute($path), |
| 55 | FileUtils::absolute(empty($base) ? self::$BASE_PATH : $base) |
| 56 | ); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Remove slashes from a string or array |
| 61 | * |
| 62 | * @template T of string|array |
| 63 | * |
| 64 | * @param T $data Data to unslash |
| 65 | * |
| 66 | * @return (T is string ? string : array) |
| 67 | * |
| 68 | * @since 1.0.0 |
| 69 | */ |
| 70 | public static function unslash(string | array $data) : string|array |
| 71 | { |
| 72 | if (\is_array($data)) { |
| 73 | $result = []; |
| 74 | foreach ($data as $key => $value) { |
| 75 | $result[$key] = \is_string($value) || \is_array($value) |
| 76 | ? self::unslash($value) |
| 77 | : $value; |
| 78 | } |
| 79 | |
| 80 | return $result; |
| 81 | } elseif (\is_string($data)) { |
| 82 | return \stripslashes($data); |
| 83 | } |
| 84 | |
| 85 | return $data; |
| 86 | } |
| 87 | } |