scratch – Blame information for rev 67
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Rev | Author | Line No. | Line |
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7 | 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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67 | office | 9 | require_once('vendor/mustangostang/spyc/Spyc.php'); |
7 | office | 10 | |
67 | office | 11 | ### Load configuration. |
12 | $config = spyc_load_file('config.yaml'); |
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13 | |||
52 | office | 14 | #### POST -> upload / GET -> download |
15 | switch ($_SERVER['REQUEST_METHOD']) { |
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16 | case 'POST': |
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17 | #### Retrieve uploaded file. |
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18 | if (!empty($_FILES['file']) and |
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19 | is_uploaded_file($_FILES['file']['tmp_name'])) { |
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67 | office | 20 | if($_FILES['file']['size'] > $config['ALLOWED_ASSET_SIZE'] * 1048576) { |
21 | header('File size exceeds '.$config['ALLOWED_ASSET_SIZE'].'MiB.', true, 403); |
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57 | office | 22 | return; |
23 | } |
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52 | office | 24 | # Regular multipart/form-data upload. |
25 | $name = $_FILES['file']['name']; |
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57 | office | 26 | $data = atomized_get_contents($_FILES['file']['tmp_name']); |
52 | office | 27 | } else { |
67 | office | 28 | if((int)get_file_size("php://input") > $config['ALLOWED_ASSET_SIZE'] * 1048576) { |
29 | header('File size exceeds '.$config['ALLOWED_ASSET_SIZE'].'MiB.', true, 403); |
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57 | office | 30 | return; |
31 | } |
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52 | office | 32 | # Raw POST data. |
33 | $name = urldecode(@$_SERVER['HTTP_X_FILE_NAME']); |
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57 | office | 34 | $data = atomized_get_contents("php://input"); |
52 | office | 35 | } |
7 | office | 36 | |
52 | office | 37 | #### Grab the file extension. |
38 | $fileExtension = pathinfo($name, PATHINFO_EXTENSION); |
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11 | office | 39 | |
52 | office | 40 | #### If the extension is not allowed then change it to a text extension. |
41 | if (!isset($fileExtension) || |
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42 | !in_array(strtoupper($fileExtension), |
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67 | office | 43 | array_map('strtoupper', $config['ALLOWED_FILE_EXTENSIONS']))) { |
57 | office | 44 | header('File extension not allowed.', true, 403); |
52 | office | 45 | return; |
46 | } |
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14 | office | 47 | |
52 | office | 48 | #### Hash filename. |
49 | $file = strtolower( |
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50 | PseudoCrypt::hash( |
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51 | preg_replace( |
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52 | '/\D/', |
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53 | '', |
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54 | hash( |
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55 | 'sha512', |
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56 | $data |
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57 | ) |
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58 | ), |
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67 | office | 59 | $config['ASSET_HASH_SIZE'] |
7 | office | 60 | ) |
52 | office | 61 | ); |
14 | office | 62 | |
52 | office | 63 | #### Build the user path. |
64 | $userPath = join( |
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65 | DIRECTORY_SEPARATOR, |
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66 | array( |
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67 | office | 67 | $config['STORE_FOLDER'], |
52 | office | 68 | $file |
69 | ) |
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70 | ); |
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11 | office | 71 | |
52 | office | 72 | #### Check for path traversals |
73 | $pathPart = pathinfo($userPath.'.'.$fileExtension); |
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74 | if (strcasecmp( |
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67 | office | 75 | realpath($pathPart['dirname']), realpath($config['STORE_FOLDER'])) != 0) { |
57 | office | 76 | header('Internal server error.', true, 500); |
52 | office | 77 | return; |
78 | } |
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7 | office | 79 | |
52 | office | 80 | #### Store the file. |
81 | atomized_put_contents($userPath.'.'.$fileExtension, $data); |
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14 | office | 82 | |
52 | office | 83 | ### Return the URL to the file. |
84 | header('Content-Type: text/plain; charset=utf-8'); |
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67 | office | 85 | echo sprintf('%s/%s', trim($config['URL_PATH'], '/'), $file); |
52 | office | 86 | break; |
87 | case 'GET': |
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88 | ### If no file has been specified for download then return. |
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89 | if (!isset($_GET['o']) or empty($_GET['o'])) { |
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57 | office | 90 | header('File not found.', true, 404); |
52 | office | 91 | return; |
92 | } |
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93 | |||
53 | office | 94 | ### Find the requested file. |
52 | office | 95 | $file = array_shift( |
96 | preg_grep( |
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97 | "/$_GET[o]/", |
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67 | office | 98 | scandir($config['STORE_FOLDER']) |
52 | office | 99 | ) |
100 | ); |
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101 | |||
102 | if (!isset($file) or empty($file)) |
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103 | return; |
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53 | office | 104 | |
105 | ### Check the path for path traversals. |
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106 | $fileExtension = pathinfo($file, PATHINFO_EXTENSION); |
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52 | office | 107 | |
53 | office | 108 | #### If the extension is not allowed then return. |
109 | if (!isset($fileExtension) || |
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110 | !in_array(strtoupper($fileExtension), |
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67 | office | 111 | array_map('strtoupper', $config['ALLOWED_FILE_EXTENSIONS']))) { |
57 | office | 112 | header('File extension not allowed.', true, 403); |
52 | office | 113 | return; |
114 | } |
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53 | office | 115 | |
116 | #### Build the user path. |
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117 | $userPath = join( |
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118 | DIRECTORY_SEPARATOR, |
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119 | array( |
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67 | office | 120 | $config['STORE_FOLDER'], |
53 | office | 121 | $file |
122 | ) |
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123 | ); |
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52 | office | 124 | |
53 | office | 125 | #### Check for path traversals |
126 | $pathPart = pathinfo($userPath); |
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127 | if (strcasecmp( |
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67 | office | 128 | realpath($pathPart['dirname']), realpath($config['STORE_FOLDER'])) != 0) { |
57 | office | 129 | header('Internal server error.', true, 500); |
53 | office | 130 | return; |
131 | } |
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132 | |||
133 | ### Hook for HTML files to display properly. |
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134 | switch(strtoupper($fileExtension)) { |
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135 | case "HTML": |
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136 | case "HTM": |
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137 | header('Content-type: text/html'); |
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138 | break; |
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139 | break; |
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140 | default: |
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141 | ### Open MIME info database and send the content type. |
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142 | $finfo = finfo_open(FILEINFO_MIME_TYPE); |
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143 | if (!$finfo) { |
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57 | office | 144 | header('Internal server error.', true, 500); |
53 | office | 145 | return; |
146 | } |
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147 | header('Content-type: '.finfo_file($finfo, $userPath)); |
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148 | finfo_close($finfo); |
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149 | break; |
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150 | } |
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151 | |||
52 | office | 152 | ### Send the file along with the inline content disposition. |
53 | office | 153 | header('Content-length: '.(int)get_file_size($userPath)); |
154 | header('Content-Disposition: inline; filename="' . basename($userPath) . '"'); |
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155 | header('Content-Transfer-Encoding: binary'); |
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156 | header('X-Sendfile: '.$userPath); |
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52 | office | 157 | break; |
158 | } |