scratch – Blame information for rev 141
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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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141 | office | 9 | require_once('php/ip.php'); |
87 | office | 10 | require_once('vendor/autoload.php'); |
7 | office | 11 | |
67 | office | 12 | ### Load configuration. |
13 | $config = spyc_load_file('config.yaml'); |
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14 | |||
52 | office | 15 | #### POST -> upload / GET -> download |
16 | switch ($_SERVER['REQUEST_METHOD']) { |
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17 | case 'POST': |
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93 | office | 18 | #### Script restrictions. |
96 | office | 19 | session_start(); |
20 | if (empty($_POST['token']) || !hash_equals($_SESSION['token'], $_POST['token'])) { |
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93 | office | 21 | http_response_code(403); |
22 | die('Forbidden.'); |
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23 | } |
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52 | office | 24 | #### Retrieve uploaded file. |
25 | if (!empty($_FILES['file']) and |
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26 | is_uploaded_file($_FILES['file']['tmp_name'])) { |
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67 | office | 27 | if($_FILES['file']['size'] > $config['ALLOWED_ASSET_SIZE'] * 1048576) { |
81 | office | 28 | http_response_code(403); |
29 | die('File size exceeds '.$config['ALLOWED_ASSET_SIZE'].'MiB.'); |
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57 | office | 30 | } |
52 | office | 31 | # Regular multipart/form-data upload. |
32 | $name = $_FILES['file']['name']; |
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57 | office | 33 | $data = atomized_get_contents($_FILES['file']['tmp_name']); |
52 | office | 34 | } else { |
67 | office | 35 | if((int)get_file_size("php://input") > $config['ALLOWED_ASSET_SIZE'] * 1048576) { |
81 | office | 36 | http_response_code(403); |
37 | die('File size exceeds '.$config['ALLOWED_ASSET_SIZE'].'MiB.'); |
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57 | office | 38 | } |
52 | office | 39 | # Raw POST data. |
40 | $name = urldecode(@$_SERVER['HTTP_X_FILE_NAME']); |
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57 | office | 41 | $data = atomized_get_contents("php://input"); |
52 | office | 42 | } |
7 | office | 43 | |
52 | office | 44 | #### Grab the file extension. |
45 | $fileExtension = pathinfo($name, PATHINFO_EXTENSION); |
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11 | office | 46 | |
52 | office | 47 | #### If the extension is not allowed then change it to a text extension. |
48 | if (!isset($fileExtension) || |
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49 | !in_array(strtoupper($fileExtension), |
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67 | office | 50 | array_map('strtoupper', $config['ALLOWED_FILE_EXTENSIONS']))) { |
81 | office | 51 | http_response_code(403); |
52 | die('File extension not allowed.'); |
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52 | office | 53 | } |
14 | office | 54 | |
52 | office | 55 | #### Hash filename. |
56 | $file = strtolower( |
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57 | PseudoCrypt::hash( |
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58 | preg_replace( |
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59 | '/\D/', |
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60 | '', |
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61 | hash( |
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62 | 'sha512', |
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63 | $data |
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64 | ) |
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65 | ), |
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67 | office | 66 | $config['ASSET_HASH_SIZE'] |
7 | office | 67 | ) |
52 | office | 68 | ); |
14 | office | 69 | |
52 | office | 70 | #### Build the user path. |
71 | $userPath = join( |
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72 | DIRECTORY_SEPARATOR, |
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73 | array( |
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67 | office | 74 | $config['STORE_FOLDER'], |
52 | office | 75 | $file |
76 | ) |
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77 | ); |
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11 | office | 78 | |
102 | office | 79 | #### Check for path traversals. |
52 | office | 80 | $pathPart = pathinfo($userPath.'.'.$fileExtension); |
81 | if (strcasecmp( |
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67 | office | 82 | realpath($pathPart['dirname']), realpath($config['STORE_FOLDER'])) != 0) { |
81 | office | 83 | http_response_code(500); |
84 | die('Internal server error.'); |
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52 | office | 85 | } |
7 | office | 86 | |
52 | office | 87 | #### Store the file. |
81 | office | 88 | $timestamp = atomized_put_contents($userPath.'.'.$fileExtension, $data); |
125 | office | 89 | |
140 | office | 90 | ### Log IP address. |
91 | $db = new PDO('sqlite:db/scratch.sqlite3'); |
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92 | $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); |
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93 | try { |
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94 | $db->beginTransaction(); |
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95 | |||
96 | ## Create tags table if it does not exist. |
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97 | $db->query('CREATE TABLE IF NOT EXISTS "uploaders" ("hash" text NOT NULL COLLATE NOCASE, "ip" text COLLATE NOCASE, UNIQUE("hash") ON CONFLICT REPLACE)'); |
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98 | |||
99 | $q = $db->prepare('REPLACE INTO "uploaders" ("hash", "ip") VALUES(:hash, :ip)'); |
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100 | $q->bindParam(':hash', $file); |
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141 | office | 101 | $q->bindParam(':ip', get_ip_address()); |
140 | office | 102 | $q->execute(); |
103 | |||
104 | $db->commit(); |
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105 | } catch (Exception $e) { |
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106 | error_log($e); |
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107 | ## Rollback. |
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108 | $db->rollback(); |
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109 | } |
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110 | |||
125 | office | 111 | ### Process any sent tags. |
112 | if(isset($_POST['tags'])) { |
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113 | $tags = json_decode( |
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114 | stripslashes( |
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115 | $_POST['tags'] |
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116 | ) |
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117 | ); |
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118 | |||
119 | ## If we have any tags then insert them into the database. |
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120 | if(!empty($tags)) { |
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126 | office | 121 | ## Connect or create the scratch database. |
122 | $db = new PDO('sqlite:db/scratch.sqlite3'); |
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123 | ## Set the error mode to exceptions. |
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124 | $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); |
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125 | office | 125 | try { |
126 | office | 126 | |
125 | office | 127 | $db->beginTransaction(); |
126 | office | 128 | |
129 | ## Create tags table if it does not exist. |
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128 | office | 130 | $db->query('CREATE TABLE IF NOT EXISTS "tags" ("hash" text NOT NULL COLLATE NOCASE, "tag" text COLLATE NOCASE, UNIQUE("hash", "tag") ON CONFLICT REPLACE)'); |
126 | office | 131 | |
132 | ## Now add all the tags. |
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125 | office | 133 | foreach($tags as $tag) { |
126 | office | 134 | $q = $db->prepare('REPLACE INTO "tags" ("hash", "tag") VALUES(:hash, :tag)'); |
135 | $q->bindParam(':hash', $file); |
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136 | $q->bindParam(':tag', $tag); |
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137 | $q->execute(); |
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125 | office | 138 | } |
139 | $db->commit(); |
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140 | } catch (Exception $e) { |
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126 | office | 141 | error_log($e); |
125 | office | 142 | ## Rollback. |
143 | $db->rollback(); |
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144 | } |
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145 | } |
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146 | } |
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14 | office | 147 | |
90 | office | 148 | ### Hook for various file extensions. |
149 | $opengraph = FALSE; |
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150 | switch(strtoupper($fileExtension)) { |
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103 | office | 151 | case 'MP4': |
90 | office | 152 | case 'GIF': |
153 | $opengraph = TRUE; |
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154 | break; |
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155 | } |
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125 | office | 156 | |
52 | office | 157 | ### Return the URL to the file. |
158 | header('Content-Type: text/plain; charset=utf-8'); |
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81 | office | 159 | echo json_encode( |
160 | array( |
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161 | "hash" => $file, |
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90 | office | 162 | "timestamp" => $timestamp, |
163 | "opengraph" => $opengraph |
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81 | office | 164 | ) |
165 | ); |
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52 | office | 166 | break; |
167 | case 'GET': |
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83 | office | 168 | ### Tell browser not to cache files. |
169 | header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); |
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170 | header("Cache-Control: post-check=0, pre-check=0", false); |
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171 | header("Pragma: no-cache"); |
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172 | |||
52 | office | 173 | ### If no file has been specified for download then return. |
81 | office | 174 | if (!isset($_GET['hash']) or empty($_GET['hash'])) { |
175 | http_response_code(404); |
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176 | die('File not found.'); |
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52 | office | 177 | } |
178 | |||
53 | office | 179 | ### Find the requested file. |
52 | office | 180 | $file = array_shift( |
181 | preg_grep( |
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81 | office | 182 | '/'.$_GET['hash'].'/', |
67 | office | 183 | scandir($config['STORE_FOLDER']) |
52 | office | 184 | ) |
185 | ); |
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186 | |||
81 | office | 187 | if (!isset($file) or empty($file)) { |
188 | http_response_code(404); |
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189 | die('File not found.'); |
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190 | } |
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53 | office | 191 | |
192 | ### Check the path for path traversals. |
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193 | $fileExtension = pathinfo($file, PATHINFO_EXTENSION); |
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52 | office | 194 | |
53 | office | 195 | #### If the extension is not allowed then return. |
196 | if (!isset($fileExtension) || |
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197 | !in_array(strtoupper($fileExtension), |
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67 | office | 198 | array_map('strtoupper', $config['ALLOWED_FILE_EXTENSIONS']))) { |
81 | office | 199 | http_response_code(403); |
200 | die('File extension not allowed.'); |
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52 | office | 201 | } |
53 | office | 202 | |
203 | #### Build the user path. |
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204 | $userPath = join( |
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205 | DIRECTORY_SEPARATOR, |
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206 | array( |
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67 | office | 207 | $config['STORE_FOLDER'], |
53 | office | 208 | $file |
209 | ) |
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210 | ); |
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52 | office | 211 | |
53 | office | 212 | #### Check for path traversals |
213 | $pathPart = pathinfo($userPath); |
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214 | if (strcasecmp( |
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67 | office | 215 | realpath($pathPart['dirname']), realpath($config['STORE_FOLDER'])) != 0) { |
81 | office | 216 | http_response_code(500); |
217 | die('Internal server error.'); |
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53 | office | 218 | } |
219 | |||
83 | office | 220 | ### Hook for various file extensions. |
53 | office | 221 | switch(strtoupper($fileExtension)) { |
222 | case "HTML": |
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223 | case "HTM": |
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224 | header('Content-type: text/html'); |
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225 | break; |
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226 | break; |
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83 | office | 227 | case "URL": |
91 | office | 228 | if(preg_match( |
229 | "/URL=(https?:\/\/[\-_\.\+!\*'\(\),a-zA-Z0-9]+:?[0-9]{0,5}\/.*?)\n/", |
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230 | file_get_contents($userPath), $matches)) { |
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83 | office | 231 | header('Location: '.$matches[1]); |
232 | return; |
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233 | } |
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234 | break; |
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53 | office | 235 | default: |
236 | ### Open MIME info database and send the content type. |
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237 | $finfo = finfo_open(FILEINFO_MIME_TYPE); |
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238 | if (!$finfo) { |
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81 | office | 239 | http_response_code(500); |
240 | die('Internal server error.'); |
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53 | office | 241 | } |
242 | header('Content-type: '.finfo_file($finfo, $userPath)); |
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243 | finfo_close($finfo); |
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244 | break; |
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245 | } |
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246 | |||
52 | office | 247 | ### Send the file along with the inline content disposition. |
53 | office | 248 | header('Content-length: '.(int)get_file_size($userPath)); |
249 | header('Content-Disposition: inline; filename="' . basename($userPath) . '"'); |
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250 | header('Content-Transfer-Encoding: binary'); |
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251 | header('X-Sendfile: '.$userPath); |
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52 | office | 252 | break; |
253 | } |