scratch – Blame information for rev 90
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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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87 | office | 9 | require_once('vendor/autoload.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'] > $config['ALLOWED_ASSET_SIZE'] * 1048576) { |
81 | office | 21 | http_response_code(403); |
22 | die('File size exceeds '.$config['ALLOWED_ASSET_SIZE'].'MiB.'); |
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57 | office | 23 | } |
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") > $config['ALLOWED_ASSET_SIZE'] * 1048576) { |
81 | office | 29 | http_response_code(403); |
30 | die('File size exceeds '.$config['ALLOWED_ASSET_SIZE'].'MiB.'); |
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57 | office | 31 | } |
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']))) { |
81 | office | 44 | http_response_code(403); |
45 | die('File extension not allowed.'); |
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52 | office | 46 | } |
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) { |
81 | office | 76 | http_response_code(500); |
77 | die('Internal server error.'); |
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52 | office | 78 | } |
7 | office | 79 | |
52 | office | 80 | #### Store the file. |
81 | office | 81 | $timestamp = atomized_put_contents($userPath.'.'.$fileExtension, $data); |
14 | office | 82 | |
90 | office | 83 | ### Hook for various file extensions. |
84 | $opengraph = FALSE; |
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85 | switch(strtoupper($fileExtension)) { |
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86 | case 'GIF': |
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87 | $opengraph = TRUE; |
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88 | break; |
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89 | } |
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90 | |||
52 | office | 91 | ### Return the URL to the file. |
92 | header('Content-Type: text/plain; charset=utf-8'); |
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81 | office | 93 | echo json_encode( |
94 | array( |
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95 | "hash" => $file, |
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90 | office | 96 | "timestamp" => $timestamp, |
97 | "opengraph" => $opengraph |
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81 | office | 98 | ) |
99 | ); |
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52 | office | 100 | break; |
101 | case 'GET': |
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83 | office | 102 | ### Tell browser not to cache files. |
103 | header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); |
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104 | header("Cache-Control: post-check=0, pre-check=0", false); |
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105 | header("Pragma: no-cache"); |
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106 | |||
52 | office | 107 | ### If no file has been specified for download then return. |
81 | office | 108 | if (!isset($_GET['hash']) or empty($_GET['hash'])) { |
109 | http_response_code(404); |
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110 | die('File not found.'); |
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52 | office | 111 | } |
112 | |||
53 | office | 113 | ### Find the requested file. |
52 | office | 114 | $file = array_shift( |
115 | preg_grep( |
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81 | office | 116 | '/'.$_GET['hash'].'/', |
67 | office | 117 | scandir($config['STORE_FOLDER']) |
52 | office | 118 | ) |
119 | ); |
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120 | |||
81 | office | 121 | if (!isset($file) or empty($file)) { |
122 | http_response_code(404); |
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123 | die('File not found.'); |
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124 | } |
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53 | office | 125 | |
126 | ### Check the path for path traversals. |
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127 | $fileExtension = pathinfo($file, PATHINFO_EXTENSION); |
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52 | office | 128 | |
53 | office | 129 | #### If the extension is not allowed then return. |
130 | if (!isset($fileExtension) || |
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131 | !in_array(strtoupper($fileExtension), |
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67 | office | 132 | array_map('strtoupper', $config['ALLOWED_FILE_EXTENSIONS']))) { |
81 | office | 133 | http_response_code(403); |
134 | die('File extension not allowed.'); |
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52 | office | 135 | } |
53 | office | 136 | |
137 | #### Build the user path. |
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138 | $userPath = join( |
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139 | DIRECTORY_SEPARATOR, |
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140 | array( |
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67 | office | 141 | $config['STORE_FOLDER'], |
53 | office | 142 | $file |
143 | ) |
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144 | ); |
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52 | office | 145 | |
53 | office | 146 | #### Check for path traversals |
147 | $pathPart = pathinfo($userPath); |
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148 | if (strcasecmp( |
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67 | office | 149 | realpath($pathPart['dirname']), realpath($config['STORE_FOLDER'])) != 0) { |
81 | office | 150 | http_response_code(500); |
151 | die('Internal server error.'); |
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53 | office | 152 | } |
153 | |||
83 | office | 154 | ### Hook for various file extensions. |
53 | office | 155 | switch(strtoupper($fileExtension)) { |
156 | case "HTML": |
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157 | case "HTM": |
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158 | header('Content-type: text/html'); |
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159 | break; |
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160 | break; |
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83 | office | 161 | case "URL": |
162 | if(preg_match("/URL=([^\n]*)\n/", file_get_contents($userPath), $matches)) { |
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163 | header('Location: '.$matches[1]); |
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164 | return; |
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165 | } |
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166 | break; |
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53 | office | 167 | default: |
168 | ### Open MIME info database and send the content type. |
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169 | $finfo = finfo_open(FILEINFO_MIME_TYPE); |
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170 | if (!$finfo) { |
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81 | office | 171 | http_response_code(500); |
172 | die('Internal server error.'); |
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53 | office | 173 | } |
174 | header('Content-type: '.finfo_file($finfo, $userPath)); |
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175 | finfo_close($finfo); |
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176 | break; |
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177 | } |
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178 | |||
52 | office | 179 | ### Send the file along with the inline content disposition. |
53 | office | 180 | header('Content-length: '.(int)get_file_size($userPath)); |
181 | header('Content-Disposition: inline; filename="' . basename($userPath) . '"'); |
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182 | header('Content-Transfer-Encoding: binary'); |
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183 | header('X-Sendfile: '.$userPath); |
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52 | office | 184 | break; |
185 | } |