scratch – Blame information for rev 94
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Rev | Author | Line No. | Line |
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28 | office | 1 | <?php |
2 | |||
3 | ########################################################################### |
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4 | ## Copyright (C) Wizardry and Steamworks 2017 - License: GNU GPLv3 ## |
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5 | ########################################################################### |
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6 | |||
66 | office | 7 | require_once('php/pseudocrypt.php'); |
8 | require_once('php/functions.php'); |
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87 | office | 9 | require_once('vendor/autoload.php'); |
28 | office | 10 | |
67 | office | 11 | ### Load configuration. |
12 | $config = spyc_load_file('config.yaml'); |
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13 | |||
93 | office | 14 | #### Script restrictions. |
15 | if( |
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16 | ( |
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94 | office | 17 | !isset($_SERVER['HTTP_X_REQUESTED_WITH']) or |
18 | empty($_SERVER['HTTP_X_REQUESTED_WITH']) or |
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93 | office | 19 | strtoupper($_SERVER['HTTP_X_REQUESTED_WITH']) != 'XMLHTTPREQUEST' |
20 | ) |
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94 | office | 21 | or |
93 | office | 22 | ( |
23 | ( |
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94 | office | 24 | !isset($_SERVER['HTTP_REFERER']) or |
93 | office | 25 | empty($_SERVER['HTTP_REFERER']) |
26 | ) |
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94 | office | 27 | and |
93 | office | 28 | ( |
94 | office | 29 | #strtoupper($_SERVER['HTTP_REFERER']) != strtoupper($config['URL_PATH'].'FILE.HTML') or |
93 | office | 30 | strtoupper($_SERVER['HTTP_REFERER']) != strtoupper($config['URL_PATH'].'TEXT.HTML') |
31 | ) |
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32 | ) |
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33 | ) |
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34 | { |
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35 | http_response_code(403); |
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36 | die('Forbidden.'); |
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37 | } |
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38 | |||
94 | office | 39 | #### Check if the fingerprint and action are set parameters. |
37 | office | 40 | if(!isset($_POST['fingerprint']) or empty($_POST['fingerprint']) or |
94 | office | 41 | !preg_match('/^[A-Za-z0-9]{32}$/', $_POST['fingerprint']) or |
57 | office | 42 | !isset($_POST['action']) or empty($_POST['action'])) { |
81 | office | 43 | http_response_code(500); |
44 | die('Internal server error.'); |
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57 | office | 45 | } |
37 | office | 46 | |
47 | #### Check fingerprint consistency. |
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48 | $fingerprint = strtoupper($_POST['fingerprint']); |
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57 | office | 49 | if(strlen($fingerprint) !== 32) { |
81 | office | 50 | http_response_code(500); |
51 | die('Internal server error.'); |
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57 | office | 52 | } |
37 | office | 53 | |
54 | $action = strtoupper($_POST['action']); |
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55 | |||
56 | #### Data must be sent in order to save a file. |
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57 | office | 57 | if($action === 'SAVE' and !isset($_POST['data'])) { |
81 | office | 58 | http_response_code(500); |
59 | die('Internal server error.'); |
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57 | office | 60 | } |
37 | office | 61 | |
62 | #### Hash fingerprint. |
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63 | $file = strtolower( |
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64 | PseudoCrypt::hash( |
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65 | preg_replace( |
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66 | '/\D/', |
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67 | '', |
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68 | hash( |
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69 | 'sha512', |
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50 | office | 70 | $fingerprint |
37 | office | 71 | ) |
48 | office | 72 | ), |
67 | office | 73 | $config['ASSET_HASH_SIZE'] |
49 | office | 74 | ) |
37 | office | 75 | ); |
76 | |||
28 | office | 77 | #### Build the user path. |
78 | $userPath = join( |
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79 | DIRECTORY_SEPARATOR, |
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80 | array( |
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67 | office | 81 | $config['STORE_FOLDER'], |
37 | office | 82 | $file |
28 | office | 83 | ) |
84 | ); |
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85 | |||
86 | #### Check for path traversals |
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49 | office | 87 | $pathPart = pathinfo($userPath.'.html'); |
28 | office | 88 | if (strcasecmp( |
67 | office | 89 | realpath($pathPart['dirname']), realpath($config['STORE_FOLDER'])) != 0) { |
81 | office | 90 | http_response_code(500); |
91 | die('Internal server error.'); |
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57 | office | 92 | } |
28 | office | 93 | |
37 | office | 94 | switch($action) { |
95 | case 'SAVE': |
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28 | office | 96 | #### Store the file. |
49 | office | 97 | atomized_put_contents($userPath.'.html', $_POST['data']); |
28 | office | 98 | break; |
37 | office | 99 | case 'LOAD': |
57 | office | 100 | if(!file_exists($userPath.'.html')) { |
62 | office | 101 | ### If the file does not exist, present an empty file instead of 404. |
102 | echo ''; |
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29 | office | 103 | return; |
57 | office | 104 | } |
53 | office | 105 | ### Set no-cache |
106 | header('Content-Type: text/html; charset=utf-8'); |
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107 | header('Cache-Control: no-cache, no-store, must-revalidate'); |
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108 | header('Pragma: no-cache'); |
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109 | header('Expires: 0'); |
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110 | ### Open MIME info database and send the content type. |
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111 | header('Content-type: text/html'); |
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112 | ### Send the file along with the inline content disposition. |
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113 | header('Content-length: '.(int)get_file_size($userPath.'.html')); |
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114 | header('Content-Disposition: inline; filename="' . basename($userPath.'.html') . '"'); |
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115 | header('X-Sendfile: '.$userPath.'.html'); |
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28 | office | 116 | break; |
117 | } |
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118 |