geekwright /
XoopsCore25
| Total Complexity | 86 |
| Total Lines | 457 |
| Duplicated Lines | 0 % |
| Changes | 4 | ||
| Bugs | 1 | Features | 0 |
Complex classes like SystemFineUploadHandler often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use SystemFineUploadHandler, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 41 | abstract class SystemFineUploadHandler |
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| 42 | { |
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| 43 | |||
| 44 | public $allowedExtensions = array(); |
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| 45 | public $allowedMimeTypes = array('(none)'); // must specify! |
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| 46 | public $sizeLimit = null; |
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| 47 | public $inputName = 'qqfile'; |
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| 48 | public $chunksFolder = 'chunks'; |
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| 49 | |||
| 50 | public $chunksCleanupProbability = 0.001; // Once in 1000 requests on avg |
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| 51 | public $chunksExpireIn = 604800; // One week |
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| 52 | |||
| 53 | protected $uploadName; |
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| 54 | public $claims; |
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| 55 | |||
| 56 | /** |
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| 57 | * XoopsFineUploadHandler constructor. |
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| 58 | * @param stdClass $claims claims passed in JWT header |
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| 59 | */ |
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| 60 | public function __construct(\stdClass $claims) |
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| 61 | { |
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| 62 | $this->claims = $claims; |
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| 63 | } |
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| 64 | |||
| 65 | /** |
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| 66 | * Get the original filename |
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| 67 | */ |
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| 68 | public function getName() |
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| 69 | { |
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| 70 | if (Request::hasVar('qqfilename', 'REQUEST')) { |
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| 71 | $qqfilename = Request::getString('qqfilename', '', 'REQUEST'); |
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| 72 | return $qqfilename; |
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| 73 | } |
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| 74 | |||
| 75 | if (Request::hasVar($this->inputName, 'FILES')) { |
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| 76 | $file = Request::getArray($this->inputName, null, 'FILES'); |
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| 77 | return $file ; |
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| 78 | } |
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| 79 | } |
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| 80 | |||
| 81 | /** |
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| 82 | * Get the name of the uploaded file |
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| 83 | * @return string |
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| 84 | */ |
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| 85 | public function getUploadName() |
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| 88 | } |
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| 89 | |||
| 90 | /** |
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| 91 | * Combine chunks into a single file |
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| 92 | * |
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| 93 | * @param string $uploadDirectory upload directory |
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| 94 | * @param string|null $name name |
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| 95 | * @return array response to be json encoded and returned to client |
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| 96 | */ |
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| 97 | public function combineChunks($uploadDirectory, $name = null) |
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| 139 | } |
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| 140 | |||
| 141 | /** |
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| 142 | * Process the upload. |
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| 143 | * @param string $uploadDirectory Target directory. |
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| 144 | * @param string $name Overwrites the name of the file. |
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| 145 | * @return array response to be json encoded and returned to client |
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| 146 | */ |
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| 147 | public function handleUpload($uploadDirectory, $name = null) |
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| 148 | { |
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| 149 | if (is_writable($this->chunksFolder) && |
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| 150 | 1 == mt_rand(1, 1/$this->chunksCleanupProbability)) { |
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| 151 | // Run garbage collection |
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| 152 | $this->cleanupChunks(); |
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| 153 | } |
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| 154 | |||
| 155 | // Check that the max upload size specified in class configuration does not |
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| 156 | // exceed size allowed by server config |
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| 157 | if ($this->toBytes(ini_get('post_max_size')) < $this->sizeLimit || |
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| 158 | $this->toBytes(ini_get('upload_max_filesize')) < $this->sizeLimit) { |
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| 159 | $neededRequestSize = max(1, $this->sizeLimit / 1024 / 1024) . 'M'; |
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| 160 | return array( |
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| 161 | 'error'=> 'Server error. Increase post_max_size and upload_max_filesize to ' . $neededRequestSize |
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| 162 | ); |
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| 163 | } |
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| 164 | |||
| 165 | if ($this->isInaccessible($uploadDirectory)) { |
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| 166 | return array('error' => "Server error. Uploads directory isn't writable"); |
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| 167 | } |
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| 168 | |||
| 169 | $type = $_SERVER['CONTENT_TYPE']; |
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| 170 | if (isset($_SERVER['HTTP_CONTENT_TYPE'])) { |
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| 171 | $type = $_SERVER['HTTP_CONTENT_TYPE']; |
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| 172 | } |
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| 173 | |||
| 174 | if (!isset($type)) { |
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| 175 | return array('error' => "No files were uploaded."); |
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| 176 | } |
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| 177 | |||
| 178 | if (strpos(strtolower($type), 'multipart/') !== 0) { |
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| 179 | return array( |
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| 180 | 'error' => "Server error. Not a multipart request. Please set forceMultipart to default value (true)." |
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| 181 | ); |
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| 182 | } |
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| 183 | |||
| 184 | // Get size and name |
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| 185 | $file = Request::getArray($this->inputName, [], 'FILES'); |
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| 186 | $size = $file['size']; |
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| 187 | if (Request::hasVar('qqtotalfilesize')) { |
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| 188 | $size = Request::getInt('qqtotalfilesize'); |
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| 189 | } |
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| 190 | |||
| 191 | if (null === $name) { |
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| 192 | $name = $this->getName(); |
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| 193 | } |
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| 194 | |||
| 195 | // check file error |
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| 196 | if ($file['error']) { |
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| 197 | return array('error' => 'Upload Error #'.$file['error']); |
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| 198 | } |
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| 199 | |||
| 200 | // Validate name |
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| 201 | if (null === $name || '' === $name) { |
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| 202 | return array('error' => 'File name empty.'); |
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| 203 | } |
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| 204 | |||
| 205 | // Validate file size |
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| 206 | if (0 == $size) { |
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| 207 | return array('error' => 'File is empty.'); |
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| 208 | } |
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| 209 | |||
| 210 | if (null !== $this->sizeLimit && $size > $this->sizeLimit) { |
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| 211 | return array('error' => 'File is too large.', 'preventRetry' => true); |
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| 212 | } |
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| 213 | |||
| 214 | // Validate file extension |
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| 215 | $pathinfo = pathinfo($name); |
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| 216 | $ext = isset($pathinfo['extension']) ? strtolower($pathinfo['extension']) : ''; |
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| 217 | |||
| 218 | if ($this->allowedExtensions |
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| 219 | && !in_array(strtolower($ext), array_map('strtolower', $this->allowedExtensions))) { |
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| 220 | $these = implode(', ', $this->allowedExtensions); |
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| 221 | return array( |
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| 222 | 'error' => 'File has an invalid extension, it should be one of '. $these . '.', |
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| 223 | 'preventRetry' => true |
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| 224 | ); |
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| 225 | } |
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| 226 | |||
| 227 | $mimeType = ''; |
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| 228 | if (!empty($this->allowedMimeTypes)) { |
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| 229 | |||
| 230 | $temp = $this->inputName; |
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| 231 | $mimeType = mime_content_type(Request::getArray($temp, [], 'FILES')['tmp_name']); |
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| 232 | if (!in_array($mimeType, $this->allowedMimeTypes)) { |
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| 233 | return array('error' => 'File is of an invalid type.', 'preventRetry' => true); |
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| 234 | } |
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| 235 | } |
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| 236 | |||
| 237 | // Save a chunk |
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| 238 | $totalParts = 1; |
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| 239 | if (Request::hasVar('qqtotalparts')) { |
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| 240 | $totalParts = (int)Request::getString('qqtotalparts'); |
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| 241 | } |
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| 242 | |||
| 243 | $uuid = Request::getString('qquuid'); |
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| 244 | if ($totalParts > 1) { |
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| 245 | # chunked upload |
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| 246 | |||
| 247 | $chunksFolder = $this->chunksFolder; |
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| 248 | $partIndex = (int)Request::getString('qqpartindex'); |
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| 249 | |||
| 250 | if (!is_writable($chunksFolder) && !is_executable($uploadDirectory)) { |
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| 251 | return array('error' => "Server error. Chunks directory isn't writable or executable."); |
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| 252 | } |
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| 253 | |||
| 254 | $targetFolder = $this->chunksFolder.DIRECTORY_SEPARATOR.$uuid; |
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| 255 | |||
| 256 | if (!file_exists($targetFolder)) { |
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| 257 | if (!mkdir($targetFolder, 0775, true) && !is_dir($targetFolder)) { |
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| 258 | throw new \RuntimeException(sprintf('Directory "%s" was not created', $targetFolder)); |
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| 259 | } |
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| 260 | } |
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| 261 | |||
| 262 | $target = $targetFolder.'/'.$partIndex; |
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| 263 | |||
| 264 | $storeResult = $this->storeUploadedFile($target, $mimeType, $uuid); |
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| 265 | if (false !== $storeResult) { |
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| 266 | return $storeResult; |
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| 267 | } |
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| 268 | } else { |
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| 269 | # non-chunked upload |
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| 270 | |||
| 271 | $target = implode(DIRECTORY_SEPARATOR, array($uploadDirectory, $uuid, $name)); |
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| 272 | |||
| 273 | if ($target) { |
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| 274 | $this->uploadName = basename($target); |
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| 275 | |||
| 276 | $storeResult = $this->storeUploadedFile($target, $mimeType, $uuid); |
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| 277 | if (false !== $storeResult) { |
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| 278 | return $storeResult; |
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| 279 | } |
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| 280 | } |
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| 281 | |||
| 282 | return array('error'=> 'Could not save uploaded file.' . |
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| 283 | 'The upload was cancelled, or server error encountered'); |
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| 284 | } |
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| 285 | } |
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| 286 | |||
| 287 | protected function storeUploadedFile($target, $mimeType, $uuid) |
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| 288 | { |
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| 289 | if (!is_dir(dirname($target))) { |
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| 290 | if (!mkdir($concurrentDirectory = dirname($target), 0775, true) && !is_dir($concurrentDirectory)) { |
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| 291 | throw new \RuntimeException(sprintf('Directory "%s" was not created', $concurrentDirectory)); |
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| 292 | } |
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| 293 | } |
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| 294 | $file = Request::getArray($this->inputName, null, 'FILES'); |
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| 295 | if (null !== $file && move_uploaded_file($file['tmp_name'], $target)) { |
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| 296 | return array('success' => true, 'uuid' => $uuid); |
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| 297 | } |
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| 298 | return false; |
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| 299 | } |
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| 300 | |||
| 301 | /** |
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| 302 | * Process a delete. |
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| 303 | * @param string $uploadDirectory Target directory. |
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| 304 | * @param string|null $name Overwrites the name of the file. |
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| 305 | * @return array response to be json encoded and returned to client |
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| 306 | */ |
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| 307 | public function handleDelete($uploadDirectory, $name = null) |
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| 308 | { |
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| 309 | if ($this->isInaccessible($uploadDirectory)) { |
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| 310 | return array( |
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| 311 | 'error' => "Server error. Uploads directory isn't writable" |
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| 312 | . ((!$this->isWindows()) ? ' or executable.' : '.') |
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| 313 | ); |
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| 314 | } |
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| 315 | |||
| 316 | $uuid = false; |
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| 317 | $method = Request::getString('REQUEST_METHOD', 'GET', 'SERVER'); |
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| 318 | |||
| 319 | if ('DELETE' === $method) { |
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| 320 | $url = Request::getString('REQUEST_URI', '', 'SERVER'); |
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| 321 | if ('' !== $url) { |
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| 322 | $url = parse_url($url, PHP_URL_PATH); |
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| 323 | $tokens = explode('/', $url); |
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| 324 | $uuid = $tokens[count($tokens) - 1]; |
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| 325 | } |
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| 326 | } elseif ('POST' === $method) { |
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| 327 | $uuid = Request::getString('qquuid', '', 'REQUEST'); |
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| 328 | } else { |
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| 329 | return array('success' => false, |
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| 330 | 'error' => 'Invalid request method! ' . $method |
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| 331 | ); |
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| 332 | } |
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| 333 | |||
| 334 | $target = implode(DIRECTORY_SEPARATOR, array($uploadDirectory, $uuid)); |
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| 335 | |||
| 336 | if (is_dir($target)) { |
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| 337 | $this->removeDir($target); |
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| 338 | return array('success' => true, 'uuid' => $uuid); |
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| 339 | } else { |
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| 340 | return array( |
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| 341 | 'success' => false, |
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| 342 | 'error' => 'File not found! Unable to delete.' . $url, |
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| 343 | 'path' => $uuid |
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| 344 | ); |
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| 345 | } |
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| 346 | } |
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| 347 | |||
| 348 | /** |
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| 349 | * Returns a path to use with this upload. Check that the name does not exist, |
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| 350 | * and appends a suffix otherwise. |
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| 351 | * @param string $uploadDirectory Target directory |
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| 352 | * @param string $filename The name of the file to use. |
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| 353 | * |
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| 354 | * @return string|false path or false if path could not be determined |
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| 355 | */ |
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| 356 | protected function getUniqueTargetPath($uploadDirectory, $filename) |
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| 357 | { |
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| 358 | // Allow only one process at the time to get a unique file name, otherwise |
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| 359 | // if multiple people would upload a file with the same name at the same time |
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| 360 | // only the latest would be saved. |
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| 361 | |||
| 362 | if (function_exists('sem_acquire')) { |
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| 363 | $lock = sem_get(ftok(__FILE__, 'u')); |
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| 364 | sem_acquire($lock); |
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| 365 | } |
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| 366 | |||
| 367 | $pathinfo = pathinfo($filename); |
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| 368 | $base = $pathinfo['filename']; |
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| 369 | $ext = isset($pathinfo['extension']) ? $pathinfo['extension'] : ''; |
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| 370 | $ext = '' == $ext ? $ext : '.' . $ext; |
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| 371 | |||
| 372 | $unique = $base; |
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| 373 | $suffix = 0; |
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| 374 | |||
| 375 | // Get unique file name for the file, by appending random suffix. |
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| 376 | |||
| 377 | while (file_exists($uploadDirectory . DIRECTORY_SEPARATOR . $unique . $ext)) { |
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| 378 | $suffix += rand(1, 999); |
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| 379 | $unique = $base.'-'.$suffix; |
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| 380 | } |
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| 381 | |||
| 382 | $result = $uploadDirectory . DIRECTORY_SEPARATOR . $unique . $ext; |
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| 383 | |||
| 384 | // Create an empty target file |
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| 385 | if (!touch($result)) { |
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| 386 | // Failed |
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| 387 | $result = false; |
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| 388 | } |
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| 389 | |||
| 390 | if (function_exists('sem_acquire')) { |
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| 391 | sem_release($lock); |
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| 392 | } |
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| 393 | |||
| 394 | return $result; |
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| 395 | } |
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| 396 | |||
| 397 | /** |
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| 398 | * Deletes all file parts in the chunks folder for files uploaded |
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| 399 | * more than chunksExpireIn seconds ago |
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| 400 | * |
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| 401 | * @return void |
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| 402 | */ |
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| 403 | protected function cleanupChunks() |
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| 418 | } |
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| 419 | } |
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| 420 | } |
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| 421 | |||
| 422 | /** |
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| 423 | * Removes a directory and all files contained inside |
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| 424 | * @param string $dir |
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| 425 | * @return void |
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| 426 | */ |
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| 427 | protected function removeDir($dir) |
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| 428 | { |
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| 429 | foreach (scandir($dir) as $item) { |
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| 430 | if ('.' == $item || '..' == $item) { |
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| 431 | continue; |
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| 432 | } |
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| 433 | |||
| 434 | if (is_dir($item)) { |
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| 435 | $this->removeDir($item); |
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| 436 | } else { |
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| 437 | unlink(implode(DIRECTORY_SEPARATOR, array($dir, $item))); |
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| 438 | } |
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| 439 | } |
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| 440 | rmdir($dir); |
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| 441 | } |
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| 442 | |||
| 443 | /** |
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| 444 | * Converts a given size with units to bytes. |
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| 445 | * @param string $str |
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| 446 | * @return int |
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| 447 | */ |
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| 448 | protected function toBytes($str) |
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| 449 | { |
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| 450 | $str = trim($str); |
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| 451 | $last = strtolower($str[strlen($str)-1]); |
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| 452 | if(is_numeric($last)) { |
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| 453 | $val = (int) $str; |
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| 454 | } else { |
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| 455 | $val = (int) substr($str, 0, -1); |
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| 456 | } |
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| 457 | switch ($last) { |
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| 458 | case 'g': |
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| 459 | $val *= 1024; // fall thru |
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| 460 | case 'm': |
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| 461 | $val *= 1024; // fall thru |
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| 462 | case 'k': |
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| 463 | $val *= 1024; // fall thru |
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| 464 | } |
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| 465 | return $val; |
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| 466 | } |
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| 467 | |||
| 468 | /** |
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| 469 | * Determines whether a directory can be accessed. |
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| 470 | * |
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| 471 | * is_executable() is not reliable on Windows prior PHP 5.0.0 |
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| 472 | * (https://www.php.net/manual/en/function.is-executable.php) |
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| 473 | * The following tests if the current OS is Windows and if so, merely |
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| 474 | * checks if the folder is writable; |
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| 475 | * otherwise, it checks additionally for executable status (like before). |
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| 476 | * |
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| 477 | * @param string $directory The target directory to test access |
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| 478 | * @return bool true if directory is NOT accessible |
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| 479 | */ |
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| 480 | protected function isInaccessible($directory) |
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| 481 | { |
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| 482 | $isWin = $this->isWindows(); |
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| 483 | $folderInaccessible = |
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| 484 | ($isWin) ? !is_writable($directory) : (!is_writable($directory) && !is_executable($directory)); |
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| 485 | return $folderInaccessible; |
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| 486 | } |
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| 487 | |||
| 488 | /** |
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| 489 | * Determines is the OS is Windows or not |
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| 490 | * |
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| 491 | * @return bool |
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| 492 | */ |
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| 493 | |||
| 494 | protected function isWindows() |
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| 498 | } |
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| 499 | } |
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| 500 |
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