1 | <?php |
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2 | /** |
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3 | * PrivateBin |
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4 | * |
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5 | * a zero-knowledge paste bin |
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6 | * |
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7 | * @link https://github.com/PrivateBin/PrivateBin |
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8 | * @copyright 2012 Sébastien SAUVAGE (sebsauvage.net) |
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9 | * @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License |
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10 | * @version 1.1 |
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11 | */ |
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12 | |||
13 | namespace PrivateBin\Persistence; |
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14 | |||
15 | use Exception; |
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16 | use PrivateBin\Json; |
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17 | |||
18 | /** |
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19 | * DataStore |
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20 | * |
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21 | * Handles data storage for Data\Filesystem. |
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22 | */ |
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23 | class DataStore extends AbstractPersistence |
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24 | { |
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25 | /** |
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26 | * first line in file, to protect its contents |
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27 | * |
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28 | * @const string |
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29 | */ |
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30 | const PROTECTION_LINE = '<?php http_response_code(403); /*'; |
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31 | |||
32 | /** |
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33 | * store the data |
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34 | * |
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35 | * @access public |
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36 | * @static |
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37 | * @param string $filename |
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38 | * @param array $data |
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39 | * @return bool |
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40 | */ |
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41 | 39 | public static function store($filename, $data) |
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42 | { |
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43 | 39 | $path = self::getPath(); |
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44 | 39 | if (strpos($filename, $path) === 0) { |
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45 | 39 | $filename = substr($filename, strlen($path)); |
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46 | } |
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47 | try { |
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48 | 39 | self::_store( |
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49 | 39 | $filename, |
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50 | 39 | self::PROTECTION_LINE . PHP_EOL . Json::encode($data) |
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51 | ); |
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52 | 38 | return true; |
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53 | 2 | } catch (Exception $e) { |
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54 | 2 | return false; |
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55 | } |
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56 | } |
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57 | |||
58 | /** |
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59 | * get the data |
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60 | * |
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61 | * @access public |
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62 | * @static |
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63 | * @param string $filename |
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64 | * @return array|false $data |
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65 | */ |
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66 | 29 | public static function get($filename) |
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67 | { |
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68 | 29 | return Json::decode( |
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69 | 29 | substr( |
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70 | 29 | file_get_contents($filename), |
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71 | 29 | strlen(self::PROTECTION_LINE . PHP_EOL) |
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72 | ) |
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73 | ); |
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74 | } |
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75 | |||
76 | /** |
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77 | * rename a file, prepending the protection line at the beginning |
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78 | * |
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79 | * @access public |
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80 | * @static |
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81 | * @param string $srcFile |
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82 | * @param string $destFile |
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83 | * @param string $prefix (optional) |
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84 | * @return void |
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85 | */ |
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86 | 3 | public static function prependRename($srcFile, $destFile, $prefix = '') |
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87 | { |
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88 | // don't overwrite already converted file |
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89 | 3 | if (!is_readable($destFile)) { |
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90 | 3 | $handle = fopen($srcFile, 'r', false, stream_context_create()); |
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91 | 3 | file_put_contents($destFile, $prefix . self::PROTECTION_LINE . PHP_EOL); |
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92 | 3 | file_put_contents($destFile, $handle, FILE_APPEND); |
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93 | 3 | fclose($handle); |
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94 | } |
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95 | 3 | unlink($srcFile); |
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96 | 3 | } |
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97 | } |
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98 |