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