| 提交 | 用户 | 时间 | ||
| 58d006 | 1 | <?php |
| A | 2 | /* |
| 3 | * jQuery File Upload Plugin PHP Class 6.9.0 | |
| 4 | * https://github.com/blueimp/jQuery-File-Upload | |
| 5 | * | |
| 6 | * Copyright 2010, Sebastian Tschan | |
| 7 | * https://blueimp.net | |
| 8 | * | |
| 9 | * Licensed under the MIT license: | |
| 10 | * http://www.opensource.org/licenses/MIT | |
| 11 | */ | |
| 12 | ||
| 13 | class UploadHandler | |
| 14 | { | |
| 15 | protected $options; | |
| 16 | // PHP File Upload error message codes: | |
| 17 | // http://php.net/manual/en/features.file-upload.errors.php | |
| 18 | protected $error_messages = array( | |
| 19 | 1 => 'The uploaded file exceeds the upload_max_filesize directive in php.ini', | |
| 20 | 2 => 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form', | |
| 21 | 3 => 'The uploaded file was only partially uploaded', | |
| 22 | 4 => 'No file was uploaded', | |
| 23 | 6 => 'Missing a temporary folder', | |
| 24 | 7 => 'Failed to write file to disk', | |
| 25 | 8 => 'A PHP extension stopped the file upload', | |
| 26 | 'post_max_size' => 'The uploaded file exceeds the post_max_size directive in php.ini', | |
| 27 | 'max_file_size' => 'File is too big', | |
| 28 | 'min_file_size' => 'File is too small', | |
| 29 | 'accept_file_types' => 'Filetype not allowed', | |
| 30 | 'max_number_of_files' => 'Maximum number of files exceeded', | |
| 31 | 'max_width' => 'Image exceeds maximum width', | |
| 32 | 'min_width' => 'Image requires a minimum width', | |
| 33 | 'max_height' => 'Image exceeds maximum height', | |
| 34 | 'min_height' => 'Image requires a minimum height' | |
| 35 | ); | |
| 36 | ||
| 37 | function __construct($options = null, $initialize = true, $error_messages = null) { | |
| 38 | $this->options = array( | |
| 39 | 'script_url' => $this->get_full_url().'/', | |
| 40 | 'upload_dir' => dirname($this->get_server_var('SCRIPT_FILENAME')).'/files/', | |
| 41 | 'upload_url' => $this->get_full_url().'/files/', | |
| 42 | 'user_dirs' => false, | |
| 43 | 'mkdir_mode' => 0755, | |
| 44 | 'param_name' => 'files', | |
| 45 | // Set the following option to 'POST', if your server does not support | |
| 46 | // DELETE requests. This is a parameter sent to the client: | |
| 47 | 'delete_type' => 'DELETE', | |
| 48 | 'access_control_allow_origin' => '*', | |
| 49 | 'access_control_allow_credentials' => false, | |
| 50 | 'access_control_allow_methods' => array( | |
| 51 | 'OPTIONS', | |
| 52 | 'HEAD', | |
| 53 | 'GET', | |
| 54 | 'POST', | |
| 55 | 'PUT', | |
| 56 | 'PATCH', | |
| 57 | 'DELETE' | |
| 58 | ), | |
| 59 | 'access_control_allow_headers' => array( | |
| 60 | 'Content-Type', | |
| 61 | 'Content-Range', | |
| 62 | 'Content-Disposition' | |
| 63 | ), | |
| 64 | // Enable to provide file downloads via GET requests to the PHP script: | |
| 65 | // 1. Set to 1 to download files via readfile method through PHP | |
| 66 | // 2. Set to 2 to send a X-Sendfile header for lighttpd/Apache | |
| 67 | // 3. Set to 3 to send a X-Accel-Redirect header for nginx | |
| 68 | // If set to 2 or 3, adjust the upload_url option to the base path of | |
| 69 | // the redirect parameter, e.g. '/files/'. | |
| 70 | 'download_via_php' => false, | |
| 71 | // Read files in chunks to avoid memory limits when download_via_php | |
| 72 | // is enabled, set to 0 to disable chunked reading of files: | |
| 73 | 'readfile_chunk_size' => 10 * 1024 * 1024, // 10 MiB | |
| 74 | // Defines which files can be displayed inline when downloaded: | |
| 75 | 'inline_file_types' => '/\.(gif|jpe?g|png)$/i', | |
| 76 | // Defines which files (based on their names) are accepted for upload: | |
| 77 | 'accept_file_types' => '/.+$/i', | |
| 78 | // The php.ini settings upload_max_filesize and post_max_size | |
| 79 | // take precedence over the following max_file_size setting: | |
| 80 | 'max_file_size' => null, | |
| 81 | 'min_file_size' => 1, | |
| 82 | // The maximum number of files for the upload directory: | |
| 83 | 'max_number_of_files' => null, | |
| 84 | // Image resolution restrictions: | |
| 85 | 'max_width' => null, | |
| 86 | 'max_height' => null, | |
| 87 | 'min_width' => 1, | |
| 88 | 'min_height' => 1, | |
| 89 | // Set the following option to false to enable resumable uploads: | |
| 90 | 'discard_aborted_uploads' => true, | |
| 91 | // Set to false to disable rotating images based on EXIF meta data: | |
| 92 | 'orient_image' => true, | |
| 93 | 'image_versions' => array( | |
| 94 | // Uncomment the following version to restrict the size of | |
| 95 | // uploaded images: | |
| 96 | /* | |
| 97 | '' => array( | |
| 98 | 'max_width' => 1920, | |
| 99 | 'max_height' => 1200, | |
| 100 | 'jpeg_quality' => 95 | |
| 101 | ), | |
| 102 | */ | |
| 103 | // Uncomment the following to create medium sized images: | |
| 104 | /* | |
| 105 | 'medium' => array( | |
| 106 | 'max_width' => 800, | |
| 107 | 'max_height' => 600, | |
| 108 | 'jpeg_quality' => 80 | |
| 109 | ), | |
| 110 | */ | |
| 111 | 'thumbnail' => array( | |
| 112 | // Uncomment the following to use a defined directory for the thumbnails | |
| 113 | // instead of a subdirectory based on the version identifier. | |
| 114 | // Make sure that this directory doesn't allow execution of files if you | |
| 115 | // don't pose any restrictions on the type of uploaded files, e.g. by | |
| 116 | // copying the .htaccess file from the files directory for Apache: | |
| 117 | //'upload_dir' => dirname($this->get_server_var('SCRIPT_FILENAME')).'/thumb/', | |
| 118 | //'upload_url' => $this->get_full_url().'/thumb/', | |
| 119 | // Uncomment the following to force the max | |
| 120 | // dimensions and e.g. create square thumbnails: | |
| 121 | //'crop' => true, | |
| 122 | 'max_width' => 80, | |
| 123 | 'max_height' => 80 | |
| 124 | ) | |
| 125 | ) | |
| 126 | ); | |
| 127 | if ($options) { | |
| 128 | $this->options = array_merge($this->options, $options); | |
| 129 | } | |
| 130 | if ($error_messages) { | |
| 131 | $this->error_messages = array_merge($this->error_messages, $error_messages); | |
| 132 | } | |
| 133 | if ($initialize) { | |
| 134 | $this->initialize(); | |
| 135 | } | |
| 136 | } | |
| 137 | ||
| 138 | protected function initialize() { | |
| 139 | switch ($this->get_server_var('REQUEST_METHOD')) { | |
| 140 | case 'OPTIONS': | |
| 141 | case 'HEAD': | |
| 142 | $this->head(); | |
| 143 | break; | |
| 144 | case 'GET': | |
| 145 | $this->get(); | |
| 146 | break; | |
| 147 | case 'PATCH': | |
| 148 | case 'PUT': | |
| 149 | case 'POST': | |
| 150 | $this->post(); | |
| 151 | break; | |
| 152 | case 'DELETE': | |
| 153 | $this->delete(); | |
| 154 | break; | |
| 155 | default: | |
| 156 | $this->header('HTTP/1.1 405 Method Not Allowed'); | |
| 157 | } | |
| 158 | } | |
| 159 | ||
| 160 | protected function get_full_url() { | |
| 161 | $https = !empty($_SERVER['HTTPS']) && strcasecmp($_SERVER['HTTPS'], 'on') === 0; | |
| 162 | return | |
| 163 | ($https ? 'https://' : 'http://'). | |
| 164 | (!empty($_SERVER['REMOTE_USER']) ? $_SERVER['REMOTE_USER'].'@' : ''). | |
| 165 | (isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : ($_SERVER['SERVER_NAME']. | |
| 166 | ($https && $_SERVER['SERVER_PORT'] === 443 || | |
| 167 | $_SERVER['SERVER_PORT'] === 80 ? '' : ':'.$_SERVER['SERVER_PORT']))). | |
| 168 | substr($_SERVER['SCRIPT_NAME'],0, strrpos($_SERVER['SCRIPT_NAME'], '/')); | |
| 169 | } | |
| 170 | ||
| 171 | protected function get_user_id() { | |
| 172 | @session_start(); | |
| 173 | return session_id(); | |
| 174 | } | |
| 175 | ||
| 176 | protected function get_user_path() { | |
| 177 | if ($this->options['user_dirs']) { | |
| 178 | return $this->get_user_id().'/'; | |
| 179 | } | |
| 180 | return ''; | |
| 181 | } | |
| 182 | ||
| 183 | protected function get_upload_path($file_name = null, $version = null) { | |
| 184 | $file_name = $file_name ? $file_name : ''; | |
| 185 | if (empty($version)) { | |
| 186 | $version_path = ''; | |
| 187 | } else { | |
| 188 | $version_dir = @$this->options['image_versions'][$version]['upload_dir']; | |
| 189 | if ($version_dir) { | |
| 190 | return $version_dir.$this->get_user_path().$file_name; | |
| 191 | } | |
| 192 | $version_path = $version.'/'; | |
| 193 | } | |
| 194 | return $this->options['upload_dir'].$this->get_user_path() | |
| 195 | .$version_path.$file_name; | |
| 196 | } | |
| 197 | ||
| 198 | protected function get_query_separator($url) { | |
| 199 | return strpos($url, '?') === false ? '?' : '&'; | |
| 200 | } | |
| 201 | ||
| 202 | protected function get_download_url($file_name, $version = null, $direct = false) { | |
| 203 | if (!$direct && $this->options['download_via_php']) { | |
| 204 | $url = $this->options['script_url'] | |
| 205 | .$this->get_query_separator($this->options['script_url']) | |
| 206 | .'file='.rawurlencode($file_name); | |
| 207 | if ($version) { | |
| 208 | $url .= '&version='.rawurlencode($version); | |
| 209 | } | |
| 210 | return $url.'&download=1'; | |
| 211 | } | |
| 212 | if (empty($version)) { | |
| 213 | $version_path = ''; | |
| 214 | } else { | |
| 215 | $version_url = @$this->options['image_versions'][$version]['upload_url']; | |
| 216 | if ($version_url) { | |
| 217 | return $version_url.$this->get_user_path().rawurlencode($file_name); | |
| 218 | } | |
| 219 | $version_path = rawurlencode($version).'/'; | |
| 220 | } | |
| 221 | return $this->options['upload_url'].$this->get_user_path() | |
| 222 | .$version_path.rawurlencode($file_name); | |
| 223 | } | |
| 224 | ||
| 225 | protected function set_additional_file_properties($file) { | |
| 226 | $file->deleteUrl = $this->options['script_url'] | |
| 227 | .$this->get_query_separator($this->options['script_url']) | |
| 228 | .$this->get_singular_param_name() | |
| 229 | .'='.rawurlencode($file->name); | |
| 230 | $file->deleteType = $this->options['delete_type']; | |
| 231 | if ($file->deleteType !== 'DELETE') { | |
| 232 | $file->deleteUrl .= '&_method=DELETE'; | |
| 233 | } | |
| 234 | if ($this->options['access_control_allow_credentials']) { | |
| 235 | $file->deleteWithCredentials = true; | |
| 236 | } | |
| 237 | } | |
| 238 | ||
| 239 | // Fix for overflowing signed 32 bit integers, | |
| 240 | // works for sizes up to 2^32-1 bytes (4 GiB - 1): | |
| 241 | protected function fix_integer_overflow($size) { | |
| 242 | if ($size < 0) { | |
| 243 | $size += 2.0 * (PHP_INT_MAX + 1); | |
| 244 | } | |
| 245 | return $size; | |
| 246 | } | |
| 247 | ||
| 248 | protected function get_file_size($file_path, $clear_stat_cache = false) { | |
| 249 | if ($clear_stat_cache) { | |
| 250 | clearstatcache(true, $file_path); | |
| 251 | } | |
| 252 | return $this->fix_integer_overflow(filesize($file_path)); | |
| 253 | ||
| 254 | } | |
| 255 | ||
| 256 | protected function is_valid_file_object($file_name) { | |
| 257 | $file_path = $this->get_upload_path($file_name); | |
| 258 | if (is_file($file_path) && $file_name[0] !== '.') { | |
| 259 | return true; | |
| 260 | } | |
| 261 | return false; | |
| 262 | } | |
| 263 | ||
| 264 | protected function get_file_object($file_name) { | |
| 265 | if ($this->is_valid_file_object($file_name)) { | |
| 266 | $file = new stdClass(); | |
| 267 | $file->name = $file_name; | |
| 268 | $file->size = $this->get_file_size( | |
| 269 | $this->get_upload_path($file_name) | |
| 270 | ); | |
| 271 | $file->url = $this->get_download_url($file->name); | |
| 272 | foreach($this->options['image_versions'] as $version => $options) { | |
| 273 | if (!empty($version)) { | |
| 274 | if (is_file($this->get_upload_path($file_name, $version))) { | |
| 275 | $file->{$version.'Url'} = $this->get_download_url( | |
| 276 | $file->name, | |
| 277 | $version | |
| 278 | ); | |
| 279 | } | |
| 280 | } | |
| 281 | } | |
| 282 | $this->set_additional_file_properties($file); | |
| 283 | return $file; | |
| 284 | } | |
| 285 | return null; | |
| 286 | } | |
| 287 | ||
| 288 | protected function get_file_objects($iteration_method = 'get_file_object') { | |
| 289 | $upload_dir = $this->get_upload_path(); | |
| 290 | if (!is_dir($upload_dir)) { | |
| 291 | return array(); | |
| 292 | } | |
| 293 | return array_values(array_filter(array_map( | |
| 294 | array($this, $iteration_method), | |
| 295 | scandir($upload_dir) | |
| 296 | ))); | |
| 297 | } | |
| 298 | ||
| 299 | protected function count_file_objects() { | |
| 300 | return count($this->get_file_objects('is_valid_file_object')); | |
| 301 | } | |
| 302 | ||
| 303 | protected function create_scaled_image($file_name, $version, $options) { | |
| 304 | $file_path = $this->get_upload_path($file_name); | |
| 305 | if (!empty($version)) { | |
| 306 | $version_dir = $this->get_upload_path(null, $version); | |
| 307 | if (!is_dir($version_dir)) { | |
| 308 | mkdir($version_dir, $this->options['mkdir_mode'], true); | |
| 309 | } | |
| 310 | $new_file_path = $version_dir.'/'.$file_name; | |
| 311 | } else { | |
| 312 | $new_file_path = $file_path; | |
| 313 | } | |
| 314 | if (!function_exists('getimagesize')) { | |
| 315 | error_log('Function not found: getimagesize'); | |
| 316 | return false; | |
| 317 | } | |
| 318 | list($img_width, $img_height) = @getimagesize($file_path); | |
| 319 | if (!$img_width || !$img_height) { | |
| 320 | return false; | |
| 321 | } | |
| 322 | $max_width = $options['max_width']; | |
| 323 | $max_height = $options['max_height']; | |
| 324 | $scale = min( | |
| 325 | $max_width / $img_width, | |
| 326 | $max_height / $img_height | |
| 327 | ); | |
| 328 | if ($scale >= 1) { | |
| 329 | if ($file_path !== $new_file_path) { | |
| 330 | return copy($file_path, $new_file_path); | |
| 331 | } | |
| 332 | return true; | |
| 333 | } | |
| 334 | if (!function_exists('imagecreatetruecolor')) { | |
| 335 | error_log('Function not found: imagecreatetruecolor'); | |
| 336 | return false; | |
| 337 | } | |
| 338 | if (empty($options['crop'])) { | |
| 339 | $new_width = $img_width * $scale; | |
| 340 | $new_height = $img_height * $scale; | |
| 341 | $dst_x = 0; | |
| 342 | $dst_y = 0; | |
| 343 | $new_img = imagecreatetruecolor($new_width, $new_height); | |
| 344 | } else { | |
| 345 | if (($img_width / $img_height) >= ($max_width / $max_height)) { | |
| 346 | $new_width = $img_width / ($img_height / $max_height); | |
| 347 | $new_height = $max_height; | |
| 348 | } else { | |
| 349 | $new_width = $max_width; | |
| 350 | $new_height = $img_height / ($img_width / $max_width); | |
| 351 | } | |
| 352 | $dst_x = 0 - ($new_width - $max_width) / 2; | |
| 353 | $dst_y = 0 - ($new_height - $max_height) / 2; | |
| 354 | $new_img = imagecreatetruecolor($max_width, $max_height); | |
| 355 | } | |
| 356 | switch (strtolower(substr(strrchr($file_name, '.'), 1))) { | |
| 357 | case 'jpg': | |
| 358 | case 'jpeg': | |
| 359 | $src_img = imagecreatefromjpeg($file_path); | |
| 360 | $write_image = 'imagejpeg'; | |
| 361 | $image_quality = isset($options['jpeg_quality']) ? | |
| 362 | $options['jpeg_quality'] : 75; | |
| 363 | break; | |
| 364 | case 'gif': | |
| 365 | imagecolortransparent($new_img, imagecolorallocate($new_img, 0, 0, 0)); | |
| 366 | $src_img = imagecreatefromgif($file_path); | |
| 367 | $write_image = 'imagegif'; | |
| 368 | $image_quality = null; | |
| 369 | break; | |
| 370 | case 'png': | |
| 371 | imagecolortransparent($new_img, imagecolorallocate($new_img, 0, 0, 0)); | |
| 372 | imagealphablending($new_img, false); | |
| 373 | imagesavealpha($new_img, true); | |
| 374 | $src_img = imagecreatefrompng($file_path); | |
| 375 | $write_image = 'imagepng'; | |
| 376 | $image_quality = isset($options['png_quality']) ? | |
| 377 | $options['png_quality'] : 9; | |
| 378 | break; | |
| 379 | default: | |
| 380 | imagedestroy($new_img); | |
| 381 | return false; | |
| 382 | } | |
| 383 | $success = imagecopyresampled( | |
| 384 | $new_img, | |
| 385 | $src_img, | |
| 386 | $dst_x, | |
| 387 | $dst_y, | |
| 388 | 0, | |
| 389 | 0, | |
| 390 | $new_width, | |
| 391 | $new_height, | |
| 392 | $img_width, | |
| 393 | $img_height | |
| 394 | ) && $write_image($new_img, $new_file_path, $image_quality); | |
| 395 | // Free up memory (imagedestroy does not delete files): | |
| 396 | imagedestroy($src_img); | |
| 397 | imagedestroy($new_img); | |
| 398 | return $success; | |
| 399 | } | |
| 400 | ||
| 401 | protected function get_error_message($error) { | |
| 402 | return array_key_exists($error, $this->error_messages) ? | |
| 403 | $this->error_messages[$error] : $error; | |
| 404 | } | |
| 405 | ||
| 406 | function get_config_bytes($val) { | |
| 407 | $val = trim($val); | |
| 408 | $last = strtolower($val[strlen($val)-1]); | |
| 409 | switch($last) { | |
| 410 | case 'g': | |
| 411 | $val *= 1024; | |
| 412 | case 'm': | |
| 413 | $val *= 1024; | |
| 414 | case 'k': | |
| 415 | $val *= 1024; | |
| 416 | } | |
| 417 | return $this->fix_integer_overflow($val); | |
| 418 | } | |
| 419 | ||
| 420 | protected function validate($uploaded_file, $file, $error, $index) { | |
| 421 | if ($error) { | |
| 422 | $file->error = $this->get_error_message($error); | |
| 423 | return false; | |
| 424 | } | |
| 425 | $content_length = $this->fix_integer_overflow(intval( | |
| 426 | $this->get_server_var('CONTENT_LENGTH') | |
| 427 | )); | |
| 428 | $post_max_size = $this->get_config_bytes(ini_get('post_max_size')); | |
| 429 | if ($post_max_size && ($content_length > $post_max_size)) { | |
| 430 | $file->error = $this->get_error_message('post_max_size'); | |
| 431 | return false; | |
| 432 | } | |
| 433 | if (!preg_match($this->options['accept_file_types'], $file->name)) { | |
| 434 | $file->error = $this->get_error_message('accept_file_types'); | |
| 435 | return false; | |
| 436 | } | |
| 437 | if ($uploaded_file && is_uploaded_file($uploaded_file)) { | |
| 438 | $file_size = $this->get_file_size($uploaded_file); | |
| 439 | } else { | |
| 440 | $file_size = $content_length; | |
| 441 | } | |
| 442 | if ($this->options['max_file_size'] && ( | |
| 443 | $file_size > $this->options['max_file_size'] || | |
| 444 | $file->size > $this->options['max_file_size']) | |
| 445 | ) { | |
| 446 | $file->error = $this->get_error_message('max_file_size'); | |
| 447 | return false; | |
| 448 | } | |
| 449 | if ($this->options['min_file_size'] && | |
| 450 | $file_size < $this->options['min_file_size']) { | |
| 451 | $file->error = $this->get_error_message('min_file_size'); | |
| 452 | return false; | |
| 453 | } | |
| 454 | if (is_int($this->options['max_number_of_files']) && ( | |
| 455 | $this->count_file_objects() >= $this->options['max_number_of_files']) | |
| 456 | ) { | |
| 457 | $file->error = $this->get_error_message('max_number_of_files'); | |
| 458 | return false; | |
| 459 | } | |
| 460 | list($img_width, $img_height) = @getimagesize($uploaded_file); | |
| 461 | if (is_int($img_width)) { | |
| 462 | if ($this->options['max_width'] && $img_width > $this->options['max_width']) { | |
| 463 | $file->error = $this->get_error_message('max_width'); | |
| 464 | return false; | |
| 465 | } | |
| 466 | if ($this->options['max_height'] && $img_height > $this->options['max_height']) { | |
| 467 | $file->error = $this->get_error_message('max_height'); | |
| 468 | return false; | |
| 469 | } | |
| 470 | if ($this->options['min_width'] && $img_width < $this->options['min_width']) { | |
| 471 | $file->error = $this->get_error_message('min_width'); | |
| 472 | return false; | |
| 473 | } | |
| 474 | if ($this->options['min_height'] && $img_height < $this->options['min_height']) { | |
| 475 | $file->error = $this->get_error_message('min_height'); | |
| 476 | return false; | |
| 477 | } | |
| 478 | } | |
| 479 | return true; | |
| 480 | } | |
| 481 | ||
| 482 | protected function upcount_name_callback($matches) { | |
| 483 | $index = isset($matches[1]) ? intval($matches[1]) + 1 : 1; | |
| 484 | $ext = isset($matches[2]) ? $matches[2] : ''; | |
| 485 | return ' ('.$index.')'.$ext; | |
| 486 | } | |
| 487 | ||
| 488 | protected function upcount_name($name) { | |
| 489 | return preg_replace_callback( | |
| 490 | '/(?:(?: \(([\d]+)\))?(\.[^.]+))?$/', | |
| 491 | array($this, 'upcount_name_callback'), | |
| 492 | $name, | |
| 493 | 1 | |
| 494 | ); | |
| 495 | } | |
| 496 | ||
| 497 | protected function get_unique_filename($name, | |
| 498 | $type = null, $index = null, $content_range = null) { | |
| 499 | while(is_dir($this->get_upload_path($name))) { | |
| 500 | $name = $this->upcount_name($name); | |
| 501 | } | |
| 502 | // Keep an existing filename if this is part of a chunked upload: | |
| 503 | $uploaded_bytes = $this->fix_integer_overflow(intval($content_range[1])); | |
| 504 | while(is_file($this->get_upload_path($name))) { | |
| 505 | if ($uploaded_bytes === $this->get_file_size( | |
| 506 | $this->get_upload_path($name))) { | |
| 507 | break; | |
| 508 | } | |
| 509 | $name = $this->upcount_name($name); | |
| 510 | } | |
| 511 | return $name; | |
| 512 | } | |
| 513 | ||
| 514 | protected function trim_file_name($name, | |
| 515 | $type = null, $index = null, $content_range = null) { | |
| 516 | // Remove path information and dots around the filename, to prevent uploading | |
| 517 | // into different directories or replacing hidden system files. | |
| 518 | // Also remove control characters and spaces (\x00..\x20) around the filename: | |
| 519 | $name = trim(basename(stripslashes($name)), ".\x00..\x20"); | |
| 520 | // Use a timestamp for empty filenames: | |
| 521 | if (!$name) { | |
| 522 | $name = str_replace('.', '-', microtime(true)); | |
| 523 | } | |
| 524 | // Add missing file extension for known image types: | |
| 525 | if (strpos($name, '.') === false && | |
| 526 | preg_match('/^image\/(gif|jpe?g|png)/', $type, $matches)) { | |
| 527 | $name .= '.'.$matches[1]; | |
| 528 | } | |
| 529 | return $name; | |
| 530 | } | |
| 531 | ||
| 532 | protected function get_file_name($name, | |
| 533 | $type = null, $index = null, $content_range = null) { | |
| 534 | return $this->get_unique_filename( | |
| 535 | $this->trim_file_name($name, $type, $index, $content_range), | |
| 536 | $type, | |
| 537 | $index, | |
| 538 | $content_range | |
| 539 | ); | |
| 540 | } | |
| 541 | ||
| 542 | protected function handle_form_data($file, $index) { | |
| 543 | // Handle form data, e.g. $_REQUEST['description'][$index] | |
| 544 | } | |
| 545 | ||
| 546 | protected function imageflip($image, $mode) { | |
| 547 | if (function_exists('imageflip')) { | |
| 548 | return imageflip($image, $mode); | |
| 549 | } | |
| 550 | $new_width = $src_width = imagesx($image); | |
| 551 | $new_height = $src_height = imagesy($image); | |
| 552 | $new_img = imagecreatetruecolor($new_width, $new_height); | |
| 553 | $src_x = 0; | |
| 554 | $src_y = 0; | |
| 555 | switch ($mode) { | |
| 556 | case '1': // flip on the horizontal axis | |
| 557 | $src_y = $new_height - 1; | |
| 558 | $src_height = -$new_height; | |
| 559 | break; | |
| 560 | case '2': // flip on the vertical axis | |
| 561 | $src_x = $new_width - 1; | |
| 562 | $src_width = -$new_width; | |
| 563 | break; | |
| 564 | case '3': // flip on both axes | |
| 565 | $src_y = $new_height - 1; | |
| 566 | $src_height = -$new_height; | |
| 567 | $src_x = $new_width - 1; | |
| 568 | $src_width = -$new_width; | |
| 569 | break; | |
| 570 | default: | |
| 571 | return $image; | |
| 572 | } | |
| 573 | imagecopyresampled( | |
| 574 | $new_img, | |
| 575 | $image, | |
| 576 | 0, | |
| 577 | 0, | |
| 578 | $src_x, | |
| 579 | $src_y, | |
| 580 | $new_width, | |
| 581 | $new_height, | |
| 582 | $src_width, | |
| 583 | $src_height | |
| 584 | ); | |
| 585 | // Free up memory (imagedestroy does not delete files): | |
| 586 | imagedestroy($image); | |
| 587 | return $new_img; | |
| 588 | } | |
| 589 | ||
| 590 | protected function orient_image($file_path) { | |
| 591 | if (!function_exists('exif_read_data')) { | |
| 592 | return false; | |
| 593 | } | |
| 594 | $exif = @exif_read_data($file_path); | |
| 595 | if ($exif === false) { | |
| 596 | return false; | |
| 597 | } | |
| 598 | $orientation = intval(@$exif['Orientation']); | |
| 599 | if ($orientation < 2 || $orientation > 8) { | |
| 600 | return false; | |
| 601 | } | |
| 602 | $image = imagecreatefromjpeg($file_path); | |
| 603 | switch ($orientation) { | |
| 604 | case 2: | |
| 605 | $image = $this->imageflip( | |
| 606 | $image, | |
| 607 | defined('IMG_FLIP_VERTICAL') ? IMG_FLIP_VERTICAL : 2 | |
| 608 | ); | |
| 609 | break; | |
| 610 | case 3: | |
| 611 | $image = imagerotate($image, 180, 0); | |
| 612 | break; | |
| 613 | case 4: | |
| 614 | $image = $this->imageflip( | |
| 615 | $image, | |
| 616 | defined('IMG_FLIP_HORIZONTAL') ? IMG_FLIP_HORIZONTAL : 1 | |
| 617 | ); | |
| 618 | break; | |
| 619 | case 5: | |
| 620 | $image = $this->imageflip( | |
| 621 | $image, | |
| 622 | defined('IMG_FLIP_HORIZONTAL') ? IMG_FLIP_HORIZONTAL : 1 | |
| 623 | ); | |
| 624 | $image = imagerotate($image, 270, 0); | |
| 625 | break; | |
| 626 | case 6: | |
| 627 | $image = imagerotate($image, 270, 0); | |
| 628 | break; | |
| 629 | case 7: | |
| 630 | $image = $this->imageflip( | |
| 631 | $image, | |
| 632 | defined('IMG_FLIP_VERTICAL') ? IMG_FLIP_VERTICAL : 2 | |
| 633 | ); | |
| 634 | $image = imagerotate($image, 270, 0); | |
| 635 | break; | |
| 636 | case 8: | |
| 637 | $image = imagerotate($image, 90, 0); | |
| 638 | break; | |
| 639 | default: | |
| 640 | return false; | |
| 641 | } | |
| 642 | $success = imagejpeg($image, $file_path); | |
| 643 | // Free up memory (imagedestroy does not delete files): | |
| 644 | imagedestroy($image); | |
| 645 | return $success; | |
| 646 | } | |
| 647 | ||
| 648 | protected function handle_image_file($file_path, $file) { | |
| 649 | if ($this->options['orient_image']) { | |
| 650 | $this->orient_image($file_path); | |
| 651 | } | |
| 652 | $failed_versions = array(); | |
| 653 | foreach($this->options['image_versions'] as $version => $options) { | |
| 654 | if ($this->create_scaled_image($file->name, $version, $options)) { | |
| 655 | if (!empty($version)) { | |
| 656 | $file->{$version.'Url'} = $this->get_download_url( | |
| 657 | $file->name, | |
| 658 | $version | |
| 659 | ); | |
| 660 | } else { | |
| 661 | $file->size = $this->get_file_size($file_path, true); | |
| 662 | } | |
| 663 | } else { | |
| 664 | $failed_versions[] = $version; | |
| 665 | } | |
| 666 | } | |
| 667 | switch (count($failed_versions)) { | |
| 668 | case 0: | |
| 669 | break; | |
| 670 | case 1: | |
| 671 | $file->error = 'Failed to create scaled version: ' | |
| 672 | .$failed_versions[0]; | |
| 673 | break; | |
| 674 | default: | |
| 675 | $file->error = 'Failed to create scaled versions: ' | |
| 676 | .implode($failed_versions,', '); | |
| 677 | } | |
| 678 | } | |
| 679 | ||
| 680 | protected function handle_file_upload($uploaded_file, $name, $size, $type, $error, | |
| 681 | $index = null, $content_range = null) { | |
| 682 | $file = new stdClass(); | |
| 683 | $file->name = $this->get_file_name($name, $type, $index, $content_range); | |
| 684 | $file->size = $this->fix_integer_overflow(intval($size)); | |
| 685 | $file->type = $type; | |
| 686 | if ($this->validate($uploaded_file, $file, $error, $index)) { | |
| 687 | $this->handle_form_data($file, $index); | |
| 688 | $upload_dir = $this->get_upload_path(); | |
| 689 | if (!is_dir($upload_dir)) { | |
| 690 | mkdir($upload_dir, $this->options['mkdir_mode'], true); | |
| 691 | } | |
| 692 | $file_path = $this->get_upload_path($file->name); | |
| 693 | $append_file = $content_range && is_file($file_path) && | |
| 694 | $file->size > $this->get_file_size($file_path); | |
| 695 | if ($uploaded_file && is_uploaded_file($uploaded_file)) { | |
| 696 | // multipart/formdata uploads (POST method uploads) | |
| 697 | if ($append_file) { | |
| 698 | file_put_contents( | |
| 699 | $file_path, | |
| 700 | fopen($uploaded_file, 'r'), | |
| 701 | FILE_APPEND | |
| 702 | ); | |
| 703 | } else { | |
| 704 | move_uploaded_file($uploaded_file, $file_path); | |
| 705 | } | |
| 706 | } else { | |
| 707 | // Non-multipart uploads (PUT method support) | |
| 708 | file_put_contents( | |
| 709 | $file_path, | |
| 710 | fopen('php://input', 'r'), | |
| 711 | $append_file ? FILE_APPEND : 0 | |
| 712 | ); | |
| 713 | } | |
| 714 | $file_size = $this->get_file_size($file_path, $append_file); | |
| 715 | if ($file_size === $file->size) { | |
| 716 | $file->url = $this->get_download_url($file->name); | |
| 717 | list($img_width, $img_height) = @getimagesize($file_path); | |
| 718 | if (is_int($img_width) && | |
| 719 | preg_match($this->options['inline_file_types'], $file->name)) { | |
| 720 | $this->handle_image_file($file_path, $file); | |
| 721 | } | |
| 722 | } else { | |
| 723 | $file->size = $file_size; | |
| 724 | if (!$content_range && $this->options['discard_aborted_uploads']) { | |
| 725 | unlink($file_path); | |
| 726 | $file->error = 'abort'; | |
| 727 | } | |
| 728 | } | |
| 729 | $this->set_additional_file_properties($file); | |
| 730 | } | |
| 731 | return $file; | |
| 732 | } | |
| 733 | ||
| 734 | protected function readfile($file_path) { | |
| 735 | $file_size = $this->get_file_size($file_path); | |
| 736 | $chunk_size = $this->options['readfile_chunk_size']; | |
| 737 | if ($chunk_size && $file_size > $chunk_size) { | |
| 738 | $handle = fopen($file_path, 'rb'); | |
| 739 | while (!feof($handle)) { | |
| 740 | echo fread($handle, $chunk_size); | |
| 741 | ob_flush(); | |
| 742 | flush(); | |
| 743 | } | |
| 744 | fclose($handle); | |
| 745 | return $file_size; | |
| 746 | } | |
| 747 | return readfile($file_path); | |
| 748 | } | |
| 749 | ||
| 750 | protected function body($str) { | |
| 751 | echo $str; | |
| 752 | } | |
| 753 | ||
| 754 | protected function header($str) { | |
| 755 | header($str); | |
| 756 | } | |
| 757 | ||
| 758 | protected function get_server_var($id) { | |
| 759 | return isset($_SERVER[$id]) ? $_SERVER[$id] : ''; | |
| 760 | } | |
| 761 | ||
| 762 | protected function generate_response($content, $print_response = true) { | |
| 763 | if ($print_response) { | |
| 764 | $json = json_encode($content); | |
| 765 | $redirect = isset($_REQUEST['redirect']) ? | |
| 766 | stripslashes($_REQUEST['redirect']) : null; | |
| 767 | if ($redirect) { | |
| 768 | $this->header('Location: '.sprintf($redirect, rawurlencode($json))); | |
| 769 | return; | |
| 770 | } | |
| 771 | $this->head(); | |
| 772 | if ($this->get_server_var('HTTP_CONTENT_RANGE')) { | |
| 773 | $files = isset($content[$this->options['param_name']]) ? | |
| 774 | $content[$this->options['param_name']] : null; | |
| 775 | if ($files && is_array($files) && is_object($files[0]) && $files[0]->size) { | |
| 776 | $this->header('Range: 0-'.( | |
| 777 | $this->fix_integer_overflow(intval($files[0]->size)) - 1 | |
| 778 | )); | |
| 779 | } | |
| 780 | } | |
| 781 | $this->body($json); | |
| 782 | } | |
| 783 | return $content; | |
| 784 | } | |
| 785 | ||
| 786 | protected function get_version_param() { | |
| 787 | return isset($_GET['version']) ? basename(stripslashes($_GET['version'])) : null; | |
| 788 | } | |
| 789 | ||
| 790 | protected function get_singular_param_name() { | |
| 791 | return substr($this->options['param_name'], 0, -1); | |
| 792 | } | |
| 793 | ||
| 794 | protected function get_file_name_param() { | |
| 795 | $name = $this->get_singular_param_name(); | |
| 796 | return isset($_GET[$name]) ? basename(stripslashes($_GET[$name])) : null; | |
| 797 | } | |
| 798 | ||
| 799 | protected function get_file_names_params() { | |
| 800 | $params = isset($_GET[$this->options['param_name']]) ? | |
| 801 | $_GET[$this->options['param_name']] : array(); | |
| 802 | foreach ($params as $key => $value) { | |
| 803 | $params[$key] = basename(stripslashes($value)); | |
| 804 | } | |
| 805 | return $params; | |
| 806 | } | |
| 807 | ||
| 808 | protected function get_file_type($file_path) { | |
| 809 | switch (strtolower(pathinfo($file_path, PATHINFO_EXTENSION))) { | |
| 810 | case 'jpeg': | |
| 811 | case 'jpg': | |
| 812 | return 'image/jpeg'; | |
| 813 | case 'png': | |
| 814 | return 'image/png'; | |
| 815 | case 'gif': | |
| 816 | return 'image/gif'; | |
| 817 | default: | |
| 818 | return ''; | |
| 819 | } | |
| 820 | } | |
| 821 | ||
| 822 | protected function download() { | |
| 823 | switch ($this->options['download_via_php']) { | |
| 824 | case 1: | |
| 825 | $redirect_header = null; | |
| 826 | break; | |
| 827 | case 2: | |
| 828 | $redirect_header = 'X-Sendfile'; | |
| 829 | break; | |
| 830 | case 3: | |
| 831 | $redirect_header = 'X-Accel-Redirect'; | |
| 832 | break; | |
| 833 | default: | |
| 834 | return $this->header('HTTP/1.1 403 Forbidden'); | |
| 835 | } | |
| 836 | $file_name = $this->get_file_name_param(); | |
| 837 | if (!$this->is_valid_file_object($file_name)) { | |
| 838 | return $this->header('HTTP/1.1 404 Not Found'); | |
| 839 | } | |
| 840 | if ($redirect_header) { | |
| 841 | return $this->header( | |
| 842 | $redirect_header.': '.$this->get_download_url( | |
| 843 | $file_name, | |
| 844 | $this->get_version_param(), | |
| 845 | true | |
| 846 | ) | |
| 847 | ); | |
| 848 | } | |
| 849 | $file_path = $this->get_upload_path($file_name, $this->get_version_param()); | |
| 850 | // Prevent browsers from MIME-sniffing the content-type: | |
| 851 | $this->header('X-Content-Type-Options: nosniff'); | |
| 852 | if (!preg_match($this->options['inline_file_types'], $file_name)) { | |
| 853 | $this->header('Content-Type: application/octet-stream'); | |
| 854 | $this->header('Content-Disposition: attachment; filename="'.$file_name.'"'); | |
| 855 | } else { | |
| 856 | $this->header('Content-Type: '.$this->get_file_type($file_path)); | |
| 857 | $this->header('Content-Disposition: inline; filename="'.$file_name.'"'); | |
| 858 | } | |
| 859 | $this->header('Content-Length: '.$this->get_file_size($file_path)); | |
| 860 | $this->header('Last-Modified: '.gmdate('D, d M Y H:i:s T', filemtime($file_path))); | |
| 861 | $this->readfile($file_path); | |
| 862 | } | |
| 863 | ||
| 864 | protected function send_content_type_header() { | |
| 865 | $this->header('Vary: Accept'); | |
| 866 | if (strpos($this->get_server_var('HTTP_ACCEPT'), 'application/json') !== false) { | |
| 867 | $this->header('Content-type: application/json'); | |
| 868 | } else { | |
| 869 | $this->header('Content-type: text/plain'); | |
| 870 | } | |
| 871 | } | |
| 872 | ||
| 873 | protected function send_access_control_headers() { | |
| 874 | $this->header('Access-Control-Allow-Origin: '.$this->options['access_control_allow_origin']); | |
| 875 | $this->header('Access-Control-Allow-Credentials: ' | |
| 876 | .($this->options['access_control_allow_credentials'] ? 'true' : 'false')); | |
| 877 | $this->header('Access-Control-Allow-Methods: ' | |
| 878 | .implode(', ', $this->options['access_control_allow_methods'])); | |
| 879 | $this->header('Access-Control-Allow-Headers: ' | |
| 880 | .implode(', ', $this->options['access_control_allow_headers'])); | |
| 881 | } | |
| 882 | ||
| 883 | public function head() { | |
| 884 | $this->header('Pragma: no-cache'); | |
| 885 | $this->header('Cache-Control: no-store, no-cache, must-revalidate'); | |
| 886 | $this->header('Content-Disposition: inline; filename="files.json"'); | |
| 887 | // Prevent Internet Explorer from MIME-sniffing the content-type: | |
| 888 | $this->header('X-Content-Type-Options: nosniff'); | |
| 889 | if ($this->options['access_control_allow_origin']) { | |
| 890 | $this->send_access_control_headers(); | |
| 891 | } | |
| 892 | $this->send_content_type_header(); | |
| 893 | } | |
| 894 | ||
| 895 | public function get($print_response = true) { | |
| 896 | if ($print_response && isset($_GET['download'])) { | |
| 897 | return $this->download(); | |
| 898 | } | |
| 899 | $file_name = $this->get_file_name_param(); | |
| 900 | if ($file_name) { | |
| 901 | $response = array( | |
| 902 | $this->get_singular_param_name() => $this->get_file_object($file_name) | |
| 903 | ); | |
| 904 | } else { | |
| 905 | $response = array( | |
| 906 | $this->options['param_name'] => $this->get_file_objects() | |
| 907 | ); | |
| 908 | } | |
| 909 | return $this->generate_response($response, $print_response); | |
| 910 | } | |
| 911 | ||
| 912 | public function post($print_response = true) { | |
| 913 | if (isset($_REQUEST['_method']) && $_REQUEST['_method'] === 'DELETE') { | |
| 914 | return $this->delete($print_response); | |
| 915 | } | |
| 916 | $upload = isset($_FILES[$this->options['param_name']]) ? | |
| 917 | $_FILES[$this->options['param_name']] : null; | |
| 918 | // Parse the Content-Disposition header, if available: | |
| 919 | $file_name = $this->get_server_var('HTTP_CONTENT_DISPOSITION') ? | |
| 920 | rawurldecode(preg_replace( | |
| 921 | '/(^[^"]+")|("$)/', | |
| 922 | '', | |
| 923 | $this->get_server_var('HTTP_CONTENT_DISPOSITION') | |
| 924 | )) : null; | |
| 925 | // Parse the Content-Range header, which has the following form: | |
| 926 | // Content-Range: bytes 0-524287/2000000 | |
| 927 | $content_range = $this->get_server_var('HTTP_CONTENT_RANGE') ? | |
| 928 | preg_split('/[^0-9]+/', $this->get_server_var('HTTP_CONTENT_RANGE')) : null; | |
| 929 | $size = $content_range ? $content_range[3] : null; | |
| 930 | $files = array(); | |
| 931 | if ($upload && is_array($upload['tmp_name'])) { | |
| 932 | // param_name is an array identifier like "files[]", | |
| 933 | // $_FILES is a multi-dimensional array: | |
| 934 | foreach ($upload['tmp_name'] as $index => $value) { | |
| 935 | $files[] = $this->handle_file_upload( | |
| 936 | $upload['tmp_name'][$index], | |
| 937 | $file_name ? $file_name : $upload['name'][$index], | |
| 938 | $size ? $size : $upload['size'][$index], | |
| 939 | $upload['type'][$index], | |
| 940 | $upload['error'][$index], | |
| 941 | $index, | |
| 942 | $content_range | |
| 943 | ); | |
| 944 | } | |
| 945 | } else { | |
| 946 | // param_name is a single object identifier like "file", | |
| 947 | // $_FILES is a one-dimensional array: | |
| 948 | $files[] = $this->handle_file_upload( | |
| 949 | isset($upload['tmp_name']) ? $upload['tmp_name'] : null, | |
| 950 | $file_name ? $file_name : (isset($upload['name']) ? | |
| 951 | $upload['name'] : null), | |
| 952 | $size ? $size : (isset($upload['size']) ? | |
| 953 | $upload['size'] : $this->get_server_var('CONTENT_LENGTH')), | |
| 954 | isset($upload['type']) ? | |
| 955 | $upload['type'] : $this->get_server_var('CONTENT_TYPE'), | |
| 956 | isset($upload['error']) ? $upload['error'] : null, | |
| 957 | null, | |
| 958 | $content_range | |
| 959 | ); | |
| 960 | } | |
| 961 | return $this->generate_response( | |
| 962 | array($this->options['param_name'] => $files), | |
| 963 | $print_response | |
| 964 | ); | |
| 965 | } | |
| 966 | ||
| 967 | public function delete($print_response = true) { | |
| 968 | $file_names = $this->get_file_names_params(); | |
| 969 | if (empty($file_names)) { | |
| 970 | $file_names = array($this->get_file_name_param()); | |
| 971 | } | |
| 972 | $response = array(); | |
| 973 | foreach($file_names as $file_name) { | |
| 974 | $file_path = $this->get_upload_path($file_name); | |
| 975 | $success = is_file($file_path) && $file_name[0] !== '.' && unlink($file_path); | |
| 976 | if ($success) { | |
| 977 | foreach($this->options['image_versions'] as $version => $options) { | |
| 978 | if (!empty($version)) { | |
| 979 | $file = $this->get_upload_path($file_name, $version); | |
| 980 | if (is_file($file)) { | |
| 981 | unlink($file); | |
| 982 | } | |
| 983 | } | |
| 984 | } | |
| 985 | } | |
| 986 | $response[$file_name] = $success; | |
| 987 | } | |
| 988 | return $this->generate_response($response, $print_response); | |
| 989 | } | |
| 990 | ||
| 991 | } | |
