root / trunk / phpBB / includes / functions_upload.php
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| 1 | <?php
|
|---|---|
| 2 | /**
|
| 3 | * |
| 4 | * @package phpBB3 |
| 5 | * @copyright (c) 2005 phpBB Group |
| 6 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2 |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | /**
|
| 11 | * @ignore |
| 12 | */ |
| 13 | if (!defined('IN_PHPBB')) |
| 14 | {
|
| 15 | exit;
|
| 16 | } |
| 17 | |
| 18 | /**
|
| 19 | * Responsible for holding all file relevant information, as well as doing file-specific operations. |
| 20 | * The {@link fileupload fileupload class} can be used to upload several files, each of them being this object to operate further on.
|
| 21 | * @package phpBB3 |
| 22 | */ |
| 23 | class filespec |
| 24 | {
|
| 25 | var $filename = ''; |
| 26 | var $realname = ''; |
| 27 | var $uploadname = ''; |
| 28 | var $mimetype = ''; |
| 29 | var $extension = ''; |
| 30 | var $filesize = 0; |
| 31 | var $width = 0; |
| 32 | var $height = 0; |
| 33 | var $image_info = array(); |
| 34 | |
| 35 | var $destination_file = ''; |
| 36 | var $destination_path = ''; |
| 37 | |
| 38 | var $file_moved = false; |
| 39 | var $init_error = false; |
| 40 | var $local = false; |
| 41 | |
| 42 | var $error = array(); |
| 43 | |
| 44 | var $upload = ''; |
| 45 | |
| 46 | /**
|
| 47 | * File Class |
| 48 | * @access private |
| 49 | */ |
| 50 | function filespec($upload_ary, $upload_namespace) |
| 51 | {
|
| 52 | if (!isset($upload_ary)) |
| 53 | {
|
| 54 | $this->init_error = true; |
| 55 | return;
|
| 56 | } |
| 57 | |
| 58 | $this->filename = $upload_ary['tmp_name']; |
| 59 | $this->filesize = $upload_ary['size']; |
| 60 | $name = (STRIP) ? stripslashes($upload_ary['name']) : $upload_ary['name']; |
| 61 | $name = trim(utf8_htmlspecialchars(utf8_basename($name))); |
| 62 | $this->realname = $this->uploadname = $name; |
| 63 | $this->mimetype = $upload_ary['type']; |
| 64 | |
| 65 | // Opera adds the name to the mime type
|
| 66 | $this->mimetype = (strpos($this->mimetype, '; name') !== false) ? str_replace(strstr($this->mimetype, '; name'), '', $this->mimetype) : $this->mimetype; |
| 67 | |
| 68 | if (!$this->mimetype) |
| 69 | {
|
| 70 | $this->mimetype = 'application/octetstream'; |
| 71 | } |
| 72 | |
| 73 | $this->extension = strtolower($this->get_extension($this->realname)); |
| 74 | |
| 75 | // Try to get real filesize from temporary folder (not always working) ;)
|
| 76 | $this->filesize = (@filesize($this->filename)) ? @filesize($this->filename) : $this->filesize; |
| 77 | |
| 78 | $this->width = $this->height = 0; |
| 79 | $this->file_moved = false; |
| 80 | |
| 81 | $this->local = (isset($upload_ary['local_mode'])) ? true : false; |
| 82 | $this->upload = $upload_namespace; |
| 83 | } |
| 84 | |
| 85 | /**
|
| 86 | * Cleans destination filename |
| 87 | * |
| 88 | * @param real|unique|unique_ext $mode real creates a realname, filtering some characters, lowering every character. Unique creates an unique filename |
| 89 | * @param string $prefix Prefix applied to filename |
| 90 | * @access public |
| 91 | */ |
| 92 | function clean_filename($mode = 'unique', $prefix = '', $user_id = '') |
| 93 | {
|
| 94 | if ($this->init_error) |
| 95 | {
|
| 96 | return;
|
| 97 | } |
| 98 | |
| 99 | switch ($mode) |
| 100 | {
|
| 101 | case 'real': |
| 102 | // Remove every extension from filename (to not let the mime bug being exposed)
|
| 103 | if (strpos($this->realname, '.') !== false) |
| 104 | {
|
| 105 | $this->realname = substr($this->realname, 0, strpos($this->realname, '.')); |
| 106 | } |
| 107 | |
| 108 | // Replace any chars which may cause us problems with _
|
| 109 | $bad_chars = array("'", "\\", ' ', '/', ':', '*', '?', '"', '<', '>', '|'); |
| 110 | |
| 111 | $this->realname = rawurlencode(str_replace($bad_chars, '_', strtolower($this->realname))); |
| 112 | $this->realname = preg_replace("/%(\w{2})/", '_', $this->realname); |
| 113 | |
| 114 | $this->realname = $prefix . $this->realname . '.' . $this->extension; |
| 115 | break;
|
| 116 | |
| 117 | case 'unique': |
| 118 | $this->realname = $prefix . md5(unique_id()); |
| 119 | break;
|
| 120 | |
| 121 | case 'avatar': |
| 122 | $this->extension = strtolower($this->extension); |
| 123 | $this->realname = $prefix . $user_id . '.' . $this->extension; |
| 124 | |
| 125 | break;
|
| 126 | |
| 127 | case 'unique_ext': |
| 128 | default:
|
| 129 | $this->realname = $prefix . md5(unique_id()) . '.' . $this->extension; |
| 130 | break;
|
| 131 | } |
| 132 | } |
| 133 | |
| 134 | /**
|
| 135 | * Get property from file object |
| 136 | */ |
| 137 | function get($property) |
| 138 | {
|
| 139 | if ($this->init_error || !isset($this->$property)) |
| 140 | {
|
| 141 | return false; |
| 142 | } |
| 143 | |
| 144 | return $this->$property; |
| 145 | } |
| 146 | |
| 147 | /**
|
| 148 | * Check if file is an image (mimetype) |
| 149 | * |
| 150 | * @return true if it is an image, false if not |
| 151 | */ |
| 152 | function is_image() |
| 153 | {
|
| 154 | return (strpos($this->mimetype, 'image/') !== false) ? true : false; |
| 155 | } |
| 156 | |
| 157 | /**
|
| 158 | * Check if the file got correctly uploaded |
| 159 | * |
| 160 | * @return true if it is a valid upload, false if not |
| 161 | */ |
| 162 | function is_uploaded() |
| 163 | {
|
| 164 | if (!$this->local && !is_uploaded_file($this->filename)) |
| 165 | {
|
| 166 | return false; |
| 167 | } |
| 168 | |
| 169 | if ($this->local && !file_exists($this->filename)) |
| 170 | {
|
| 171 | return false; |
| 172 | } |
| 173 | |
| 174 | return true; |
| 175 | } |
| 176 | |
| 177 | /**
|
| 178 | * Remove file |
| 179 | */ |
| 180 | function remove() |
| 181 | {
|
| 182 | if ($this->file_moved) |
| 183 | {
|
| 184 | @unlink($this->destination_file); |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | /**
|
| 189 | * Get file extension |
| 190 | */ |
| 191 | function get_extension($filename) |
| 192 | {
|
| 193 | if (strpos($filename, '.') === false) |
| 194 | {
|
| 195 | return ''; |
| 196 | } |
| 197 | |
| 198 | $filename = explode('.', $filename); |
| 199 | return array_pop($filename); |
| 200 | } |
| 201 | |
| 202 | /**
|
| 203 | * Get mimetype. Utilize mime_content_type if the function exist. |
| 204 | * Not used at the moment... |
| 205 | */ |
| 206 | function get_mimetype($filename) |
| 207 | {
|
| 208 | $mimetype = ''; |
| 209 | |
| 210 | if (function_exists('mime_content_type')) |
| 211 | {
|
| 212 | $mimetype = mime_content_type($filename); |
| 213 | } |
| 214 | |
| 215 | // Some browsers choke on a mimetype of application/octet-stream
|
| 216 | if (!$mimetype || $mimetype == 'application/octet-stream') |
| 217 | {
|
| 218 | $mimetype = 'application/octetstream'; |
| 219 | } |
| 220 | |
| 221 | return $mimetype; |
| 222 | } |
| 223 | |
| 224 | /**
|
| 225 | * Get filesize |
| 226 | */ |
| 227 | function get_filesize($filename) |
| 228 | {
|
| 229 | return @filesize($filename); |
| 230 | } |
| 231 | |
| 232 | |
| 233 | /**
|
| 234 | * Check the first 256 bytes for forbidden content |
| 235 | */ |
| 236 | function check_content($disallowed_content) |
| 237 | {
|
| 238 | if (empty($disallowed_content)) |
| 239 | {
|
| 240 | return true; |
| 241 | } |
| 242 | |
| 243 | $fp = @fopen($this->filename, 'rb'); |
| 244 | |
| 245 | if ($fp !== false) |
| 246 | {
|
| 247 | $ie_mime_relevant = fread($fp, 256); |
| 248 | fclose($fp); |
| 249 | foreach ($disallowed_content as $forbidden) |
| 250 | {
|
| 251 | if (stripos($ie_mime_relevant, '<' . $forbidden) !== false) |
| 252 | {
|
| 253 | return false; |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | return true; |
| 258 | } |
| 259 | |
| 260 | /**
|
| 261 | * Move file to destination folder |
| 262 | * The phpbb_root_path variable will be applied to the destination path |
| 263 | * |
| 264 | * @param string $destination_path Destination path, for example $config['avatar_path'] |
| 265 | * @param bool $overwrite If set to true, an already existing file will be overwritten |
| 266 | * @param string $chmod Permission mask for chmodding the file after a successful move. The mode entered here reflects the mode defined by {@link phpbb_chmod()}
|
| 267 | * |
| 268 | * @access public |
| 269 | */ |
| 270 | function move_file($destination, $overwrite = false, $skip_image_check = false, $chmod = false) |
| 271 | {
|
| 272 | global $user, $phpbb_root_path; |
| 273 | |
| 274 | if (sizeof($this->error)) |
| 275 | {
|
| 276 | return false; |
| 277 | } |
| 278 | |
| 279 | $chmod = ($chmod === false) ? CHMOD_READ | CHMOD_WRITE : $chmod; |
| 280 | |
| 281 | // We need to trust the admin in specifying valid upload directories and an attacker not being able to overwrite it...
|
| 282 | $this->destination_path = $phpbb_root_path . $destination; |
| 283 | |
| 284 | // Check if the destination path exist...
|
| 285 | if (!file_exists($this->destination_path)) |
| 286 | {
|
| 287 | @unlink($this->filename); |
| 288 | return false; |
| 289 | } |
| 290 | |
| 291 | $upload_mode = (@ini_get('open_basedir') || @ini_get('safe_mode') || strtolower(@ini_get('safe_mode')) == 'on') ? 'move' : 'copy'; |
| 292 | $upload_mode = ($this->local) ? 'local' : $upload_mode; |
| 293 | $this->destination_file = $this->destination_path . '/' . utf8_basename($this->realname); |
| 294 | |
| 295 | // Check if the file already exist, else there is something wrong...
|
| 296 | if (file_exists($this->destination_file) && !$overwrite) |
| 297 | {
|
| 298 | @unlink($this->filename); |
| 299 | } |
| 300 | else
|
| 301 | {
|
| 302 | if (file_exists($this->destination_file)) |
| 303 | {
|
| 304 | @unlink($this->destination_file); |
| 305 | } |
| 306 | |
| 307 | switch ($upload_mode) |
| 308 | {
|
| 309 | case 'copy': |
| 310 | |
| 311 | if (!@copy($this->filename, $this->destination_file)) |
| 312 | {
|
| 313 | if (!@move_uploaded_file($this->filename, $this->destination_file)) |
| 314 | {
|
| 315 | $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'GENERAL_UPLOAD_ERROR'], $this->destination_file); |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | break;
|
| 320 | |
| 321 | case 'move': |
| 322 | |
| 323 | if (!@move_uploaded_file($this->filename, $this->destination_file)) |
| 324 | {
|
| 325 | if (!@copy($this->filename, $this->destination_file)) |
| 326 | {
|
| 327 | $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'GENERAL_UPLOAD_ERROR'], $this->destination_file); |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | break;
|
| 332 | |
| 333 | case 'local': |
| 334 | |
| 335 | if (!@copy($this->filename, $this->destination_file)) |
| 336 | {
|
| 337 | $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'GENERAL_UPLOAD_ERROR'], $this->destination_file); |
| 338 | } |
| 339 | |
| 340 | break;
|
| 341 | } |
| 342 | |
| 343 | // Remove temporary filename
|
| 344 | @unlink($this->filename); |
| 345 | |
| 346 | if (sizeof($this->error)) |
| 347 | {
|
| 348 | return false; |
| 349 | } |
| 350 | |
| 351 | phpbb_chmod($this->destination_file, $chmod); |
| 352 | } |
| 353 | |
| 354 | // Try to get real filesize from destination folder
|
| 355 | $this->filesize = (@filesize($this->destination_file)) ? @filesize($this->destination_file) : $this->filesize; |
| 356 | |
| 357 | if ($this->is_image() && !$skip_image_check) |
| 358 | {
|
| 359 | $this->width = $this->height = 0; |
| 360 | |
| 361 | if (($this->image_info = @getimagesize($this->destination_file)) !== false) |
| 362 | {
|
| 363 | $this->width = $this->image_info[0]; |
| 364 | $this->height = $this->image_info[1]; |
| 365 | |
| 366 | if (!empty($this->image_info['mime'])) |
| 367 | {
|
| 368 | $this->mimetype = $this->image_info['mime']; |
| 369 | } |
| 370 | |
| 371 | // Check image type
|
| 372 | $types = $this->upload->image_types(); |
| 373 | |
| 374 | if (!isset($types[$this->image_info[2]]) || !in_array($this->extension, $types[$this->image_info[2]])) |
| 375 | {
|
| 376 | if (!isset($types[$this->image_info[2]])) |
| 377 | {
|
| 378 | $this->error[] = sprintf($user->lang['IMAGE_FILETYPE_INVALID'], $this->image_info[2], $this->mimetype); |
| 379 | } |
| 380 | else
|
| 381 | {
|
| 382 | $this->error[] = sprintf($user->lang['IMAGE_FILETYPE_MISMATCH'], $types[$this->image_info[2]][0], $this->extension); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | // Make sure the dimensions match a valid image
|
| 387 | if (empty($this->width) || empty($this->height)) |
| 388 | {
|
| 389 | $this->error[] = $user->lang['ATTACHED_IMAGE_NOT_IMAGE']; |
| 390 | } |
| 391 | } |
| 392 | else
|
| 393 | {
|
| 394 | $this->error[] = $user->lang['UNABLE_GET_IMAGE_SIZE']; |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | $this->file_moved = true; |
| 399 | $this->additional_checks();
|
| 400 | unset($this->upload); |
| 401 | |
| 402 | return true; |
| 403 | } |
| 404 | |
| 405 | /**
|
| 406 | * Performing additional checks |
| 407 | */ |
| 408 | function additional_checks() |
| 409 | {
|
| 410 | global $user; |
| 411 | |
| 412 | if (!$this->file_moved) |
| 413 | {
|
| 414 | return false; |
| 415 | } |
| 416 | |
| 417 | // Filesize is too big or it's 0 if it was larger than the maxsize in the upload form
|
| 418 | if ($this->upload->max_filesize && ($this->get('filesize') > $this->upload->max_filesize || $this->filesize == 0)) |
| 419 | {
|
| 420 | $max_filesize = get_formatted_filesize($this->upload->max_filesize, false); |
| 421 | |
| 422 | $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'WRONG_FILESIZE'], $max_filesize['value'], $max_filesize['unit']); |
| 423 | |
| 424 | return false; |
| 425 | } |
| 426 | |
| 427 | if (!$this->upload->valid_dimensions($this)) |
| 428 | {
|
| 429 | $this->error[] = $user->lang($this->upload->error_prefix . 'WRONG_SIZE', |
| 430 | $user->lang('PIXELS', (int) $this->upload->min_width), |
| 431 | $user->lang('PIXELS', (int) $this->upload->min_height), |
| 432 | $user->lang('PIXELS', (int) $this->upload->max_width), |
| 433 | $user->lang('PIXELS', (int) $this->upload->max_height), |
| 434 | $user->lang('PIXELS', (int) $this->width), |
| 435 | $user->lang('PIXELS', (int) $this->height)); |
| 436 | |
| 437 | return false; |
| 438 | } |
| 439 | |
| 440 | return true; |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | /**
|
| 445 | * Class for assigning error messages before a real filespec class can be assigned |
| 446 | * |
| 447 | * @package phpBB3 |
| 448 | */ |
| 449 | class fileerror extends filespec |
| 450 | {
|
| 451 | function fileerror($error_msg) |
| 452 | {
|
| 453 | $this->error[] = $error_msg; |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | /**
|
| 458 | * File upload class |
| 459 | * Init class (all parameters optional and able to be set/overwritten separately) - scope is global and valid for all uploads |
| 460 | * |
| 461 | * @package phpBB3 |
| 462 | */ |
| 463 | class fileupload |
| 464 | {
|
| 465 | var $allowed_extensions = array(); |
| 466 | var $disallowed_content = array('body', 'head', 'html', 'img', 'plaintext', 'a href', 'pre', 'script', 'table', 'title'); |
| 467 | var $max_filesize = 0; |
| 468 | var $min_width = 0; |
| 469 | var $min_height = 0; |
| 470 | var $max_width = 0; |
| 471 | var $max_height = 0; |
| 472 | var $error_prefix = ''; |
| 473 | |
| 474 | /**
|
| 475 | * Init file upload class. |
| 476 | * |
| 477 | * @param string $error_prefix Used error messages will get prefixed by this string |
| 478 | * @param array $allowed_extensions Array of allowed extensions, for example array('jpg', 'jpeg', 'gif', 'png')
|
| 479 | * @param int $max_filesize Maximum filesize |
| 480 | * @param int $min_width Minimum image width (only checked for images) |
| 481 | * @param int $min_height Minimum image height (only checked for images) |
| 482 | * @param int $max_width Maximum image width (only checked for images) |
| 483 | * @param int $max_height Maximum image height (only checked for images) |
| 484 | * |
| 485 | */ |
| 486 | function fileupload($error_prefix = '', $allowed_extensions = false, $max_filesize = false, $min_width = false, $min_height = false, $max_width = false, $max_height = false, $disallowed_content = false) |
| 487 | {
|
| 488 | $this->set_allowed_extensions($allowed_extensions); |
| 489 | $this->set_max_filesize($max_filesize); |
| 490 | $this->set_allowed_dimensions($min_width, $min_height, $max_width, $max_height); |
| 491 | $this->set_error_prefix($error_prefix); |
| 492 | $this->set_disallowed_content($disallowed_content); |
| 493 | } |
| 494 | |
| 495 | /**
|
| 496 | * Reset vars |
| 497 | */ |
| 498 | function reset_vars() |
| 499 | {
|
| 500 | $this->max_filesize = 0; |
| 501 | $this->min_width = $this->min_height = $this->max_width = $this->max_height = 0; |
| 502 | $this->error_prefix = ''; |
| 503 | $this->allowed_extensions = array(); |
| 504 | $this->disallowed_content = array(); |
| 505 | } |
| 506 | |
| 507 | /**
|
| 508 | * Set allowed extensions |
| 509 | */ |
| 510 | function set_allowed_extensions($allowed_extensions) |
| 511 | {
|
| 512 | if ($allowed_extensions !== false && is_array($allowed_extensions)) |
| 513 | {
|
| 514 | $this->allowed_extensions = $allowed_extensions; |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | /**
|
| 519 | * Set allowed dimensions |
| 520 | */ |
| 521 | function set_allowed_dimensions($min_width, $min_height, $max_width, $max_height) |
| 522 | {
|
| 523 | $this->min_width = (int) $min_width; |
| 524 | $this->min_height = (int) $min_height; |
| 525 | $this->max_width = (int) $max_width; |
| 526 | $this->max_height = (int) $max_height; |
| 527 | } |
| 528 | |
| 529 | /**
|
| 530 | * Set maximum allowed filesize |
| 531 | */ |
| 532 | function set_max_filesize($max_filesize) |
| 533 | {
|
| 534 | if ($max_filesize !== false && (int) $max_filesize) |
| 535 | {
|
| 536 | $this->max_filesize = (int) $max_filesize; |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | /**
|
| 541 | * Set disallowed strings |
| 542 | */ |
| 543 | function set_disallowed_content($disallowed_content) |
| 544 | {
|
| 545 | if ($disallowed_content !== false && is_array($disallowed_content)) |
| 546 | {
|
| 547 | $this->disallowed_content = array_diff($disallowed_content, array('')); |
| 548 | } |
| 549 | } |
| 550 | |
| 551 | /**
|
| 552 | * Set error prefix |
| 553 | */ |
| 554 | function set_error_prefix($error_prefix) |
| 555 | {
|
| 556 | $this->error_prefix = $error_prefix; |
| 557 | } |
| 558 | |
| 559 | /**
|
| 560 | * Form upload method |
| 561 | * Upload file from users harddisk |
| 562 | * |
| 563 | * @param string $form_name Form name assigned to the file input field (if it is an array, the key has to be specified) |
| 564 | * @return object $file Object "filespec" is returned, all further operations can be done with this object |
| 565 | * @access public |
| 566 | */ |
| 567 | function form_upload($form_name) |
| 568 | {
|
| 569 | global $user; |
| 570 | |
| 571 | unset($_FILES[$form_name]['local_mode']); |
| 572 | $file = new filespec($_FILES[$form_name], $this); |
| 573 | |
| 574 | if ($file->init_error) |
| 575 | {
|
| 576 | $file->error[] = ''; |
| 577 | return $file; |
| 578 | } |
| 579 | |
| 580 | // Error array filled?
|
| 581 | if (isset($_FILES[$form_name]['error'])) |
| 582 | {
|
| 583 | $error = $this->assign_internal_error($_FILES[$form_name]['error']); |
| 584 | |
| 585 | if ($error !== false) |
| 586 | {
|
| 587 | $file->error[] = $error; |
| 588 | return $file; |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | // Check if empty file got uploaded (not catched by is_uploaded_file)
|
| 593 | if (isset($_FILES[$form_name]['size']) && $_FILES[$form_name]['size'] == 0) |
| 594 | {
|
| 595 | $file->error[] = $user->lang[$this->error_prefix . 'EMPTY_FILEUPLOAD']; |
| 596 | return $file; |
| 597 | } |
| 598 | |
| 599 | // PHP Upload filesize exceeded
|
| 600 | if ($file->get('filename') == 'none') |
| 601 | {
|
| 602 | $max_filesize = @ini_get('upload_max_filesize'); |
| 603 | $unit = 'MB'; |
| 604 | |
| 605 | if (!empty($max_filesize)) |
| 606 | {
|
| 607 | $unit = strtolower(substr($max_filesize, -1, 1)); |
| 608 | $max_filesize = (int) $max_filesize; |
| 609 | |
| 610 | $unit = ($unit == 'k') ? 'KB' : (($unit == 'g') ? 'GB' : 'MB'); |
| 611 | } |
| 612 | |
| 613 | $file->error[] = (empty($max_filesize)) ? $user->lang[$this->error_prefix . 'PHP_SIZE_NA'] : sprintf($user->lang[$this->error_prefix . 'PHP_SIZE_OVERRUN'], $max_filesize, $user->lang[$unit]); |
| 614 | return $file; |
| 615 | } |
| 616 | |
| 617 | // Not correctly uploaded
|
| 618 | if (!$file->is_uploaded()) |
| 619 | {
|
| 620 | $file->error[] = $user->lang[$this->error_prefix . 'NOT_UPLOADED']; |
| 621 | return $file; |
| 622 | } |
| 623 | |
| 624 | $this->common_checks($file); |
| 625 | |
| 626 | return $file; |
| 627 | } |
| 628 | |
| 629 | /**
|
| 630 | * Move file from another location to phpBB |
| 631 | */ |
| 632 | function local_upload($source_file, $filedata = false) |
| 633 | {
|
| 634 | global $user; |
| 635 | |
| 636 | $form_name = 'local'; |
| 637 | |
| 638 | $_FILES[$form_name]['local_mode'] = true; |
| 639 | $_FILES[$form_name]['tmp_name'] = $source_file; |
| 640 | |
| 641 | if ($filedata === false) |
| 642 | {
|
| 643 | $_FILES[$form_name]['name'] = utf8_basename($source_file); |
| 644 | $_FILES[$form_name]['size'] = 0; |
| 645 | $mimetype = ''; |
| 646 | |
| 647 | if (function_exists('mime_content_type')) |
| 648 | {
|
| 649 | $mimetype = mime_content_type($source_file); |
| 650 | } |
| 651 | |
| 652 | // Some browsers choke on a mimetype of application/octet-stream
|
| 653 | if (!$mimetype || $mimetype == 'application/octet-stream') |
| 654 | {
|
| 655 | $mimetype = 'application/octetstream'; |
| 656 | } |
| 657 | |
| 658 | $_FILES[$form_name]['type'] = $mimetype; |
| 659 | } |
| 660 | else
|
| 661 | {
|
| 662 | $_FILES[$form_name]['name'] = $filedata['realname']; |
| 663 | $_FILES[$form_name]['size'] = $filedata['size']; |
| 664 | $_FILES[$form_name]['type'] = $filedata['type']; |
| 665 | } |
| 666 | |
| 667 | $file = new filespec($_FILES[$form_name], $this); |
| 668 | |
| 669 | if ($file->init_error) |
| 670 | {
|
| 671 | $file->error[] = ''; |
| 672 | return $file; |
| 673 | } |
| 674 | |
| 675 | if (isset($_FILES[$form_name]['error'])) |
| 676 | {
|
| 677 | $error = $this->assign_internal_error($_FILES[$form_name]['error']); |
| 678 | |
| 679 | if ($error !== false) |
| 680 | {
|
| 681 | $file->error[] = $error; |
| 682 | return $file; |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | // PHP Upload filesize exceeded
|
| 687 | if ($file->get('filename') == 'none') |
| 688 | {
|
| 689 | $max_filesize = @ini_get('upload_max_filesize'); |
| 690 | $unit = 'MB'; |
| 691 | |
| 692 | if (!empty($max_filesize)) |
| 693 | {
|
| 694 | $unit = strtolower(substr($max_filesize, -1, 1)); |
| 695 | $max_filesize = (int) $max_filesize; |
| 696 | |
| 697 | $unit = ($unit == 'k') ? 'KB' : (($unit == 'g') ? 'GB' : 'MB'); |
| 698 | } |
| 699 | |
| 700 | $file->error[] = (empty($max_filesize)) ? $user->lang[$this->error_prefix . 'PHP_SIZE_NA'] : sprintf($user->lang[$this->error_prefix . 'PHP_SIZE_OVERRUN'], $max_filesize, $user->lang[$unit]); |
| 701 | return $file; |
| 702 | } |
| 703 | |
| 704 | // Not correctly uploaded
|
| 705 | if (!$file->is_uploaded()) |
| 706 | {
|
| 707 | $file->error[] = $user->lang[$this->error_prefix . 'NOT_UPLOADED']; |
| 708 | return $file; |
| 709 | } |
| 710 | |
| 711 | $this->common_checks($file); |
| 712 | |
| 713 | return $file; |
| 714 | } |
| 715 | |
| 716 | /**
|
| 717 | * Remote upload method |
| 718 | * Uploads file from given url |
| 719 | * |
| 720 | * @param string $upload_url URL pointing to file to upload, for example http://www.foobar.com/example.gif |
| 721 | * @return object $file Object "filespec" is returned, all further operations can be done with this object |
| 722 | * @access public |
| 723 | */ |
| 724 | function remote_upload($upload_url) |
| 725 | {
|
| 726 | global $user, $phpbb_root_path; |
| 727 | |
| 728 | $upload_ary = array(); |
| 729 | $upload_ary['local_mode'] = true; |
| 730 | |
| 731 | if (!preg_match('#^(https?://).*?\.(' . implode('|', $this->allowed_extensions) . ')$#i', $upload_url, $match)) |
| 732 | {
|
| 733 | $file = new fileerror($user->lang[$this->error_prefix . 'URL_INVALID']); |
| 734 | return $file; |
| 735 | } |
| 736 | |
| 737 | if (empty($match[2])) |
| 738 | {
|
| 739 | $file = new fileerror($user->lang[$this->error_prefix . 'URL_INVALID']); |
| 740 | return $file; |
| 741 | } |
| 742 | |
| 743 | $url = parse_url($upload_url); |
| 744 | |
| 745 | $host = $url['host']; |
| 746 | $path = $url['path']; |
| 747 | $port = (!empty($url['port'])) ? (int) $url['port'] : 80; |
| 748 | |
| 749 | $upload_ary['type'] = 'application/octet-stream'; |
| 750 | |
| 751 | $url['path'] = explode('.', $url['path']); |
| 752 | $ext = array_pop($url['path']); |
| 753 | |
| 754 | $url['path'] = implode('', $url['path']); |
| 755 | $upload_ary['name'] = utf8_basename($url['path']) . (($ext) ? '.' . $ext : ''); |
| 756 | $filename = $url['path']; |
| 757 | $filesize = 0; |
| 758 | |
| 759 | $errno = 0; |
| 760 | $errstr = ''; |
| 761 | |
| 762 | if (!($fsock = @fsockopen($host, $port, $errno, $errstr))) |
| 763 | {
|
| 764 | $file = new fileerror($user->lang[$this->error_prefix . 'NOT_UPLOADED']); |
| 765 | return $file; |
| 766 | } |
| 767 | |
| 768 | // Make sure $path not beginning with /
|
| 769 | if (strpos($path, '/') === 0) |
| 770 | {
|
| 771 | $path = substr($path, 1); |
| 772 | } |
| 773 | |
| 774 | fputs($fsock, 'GET /' . $path . " HTTP/1.1\r\n"); |
| 775 | fputs($fsock, "HOST: " . $host . "\r\n"); |
| 776 | fputs($fsock, "Connection: close\r\n\r\n"); |
| 777 | |
| 778 | $get_info = false; |
| 779 | $data = ''; |
| 780 | while (!@feof($fsock)) |
| 781 | {
|
| 782 | if ($get_info) |
| 783 | {
|
| 784 | $block = @fread($fsock, 1024); |
| 785 | $filesize += strlen($block); |
| 786 | |
| 787 | if ($this->max_filesize && $filesize > $this->max_filesize) |
| 788 | {
|
| 789 | $max_filesize = get_formatted_filesize($this->max_filesize, false); |
| 790 | |
| 791 | $file = new fileerror(sprintf($user->lang[$this->error_prefix . 'WRONG_FILESIZE'], $max_filesize['value'], $max_filesize['unit'])); |
| 792 | return $file; |
| 793 | } |
| 794 | |
| 795 | $data .= $block; |
| 796 | } |
| 797 | else
|
| 798 | {
|
| 799 | $line = @fgets($fsock, 1024); |
| 800 | |
| 801 | if ($line == "\r\n") |
| 802 | {
|
| 803 | $get_info = true; |
| 804 | } |
| 805 | else
|
| 806 | {
|
| 807 | if (stripos($line, 'content-type: ') !== false) |
| 808 | {
|
| 809 | $upload_ary['type'] = rtrim(str_replace('content-type: ', '', strtolower($line))); |
| 810 | } |
| 811 | else if ($this->max_filesize && stripos($line, 'content-length: ') !== false) |
| 812 | {
|
| 813 | $length = (int) str_replace('content-length: ', '', strtolower($line)); |
| 814 | |
| 815 | if ($length && $length > $this->max_filesize) |
| 816 | {
|
| 817 | $max_filesize = get_formatted_filesize($this->max_filesize, false); |
| 818 | |
| 819 | $file = new fileerror(sprintf($user->lang[$this->error_prefix . 'WRONG_FILESIZE'], $max_filesize['value'], $max_filesize['unit'])); |
| 820 | return $file; |
| 821 | } |
| 822 | } |
| 823 | else if (stripos($line, '404 not found') !== false) |
| 824 | {
|
| 825 | $file = new fileerror($user->lang[$this->error_prefix . 'URL_NOT_FOUND']); |
| 826 | return $file; |
| 827 | } |
| 828 | } |
| 829 | } |
| 830 | } |
| 831 | @fclose($fsock); |
| 832 | |
| 833 | if (empty($data)) |
| 834 | {
|
| 835 | $file = new fileerror($user->lang[$this->error_prefix . 'EMPTY_REMOTE_DATA']); |
| 836 | return $file; |
| 837 | } |
| 838 | |
| 839 | $tmp_path = (!@ini_get('safe_mode') || strtolower(@ini_get('safe_mode')) == 'off') ? false : $phpbb_root_path . 'cache'; |
| 840 | $filename = tempnam($tmp_path, unique_id() . '-'); |
| 841 | |
| 842 | if (!($fp = @fopen($filename, 'wb'))) |
| 843 | {
|
| 844 | $file = new fileerror($user->lang[$this->error_prefix . 'NOT_UPLOADED']); |
| 845 | return $file; |
| 846 | } |
| 847 | |
| 848 | $upload_ary['size'] = fwrite($fp, $data); |
| 849 | fclose($fp); |
| 850 | unset($data); |
| 851 | |
| 852 | $upload_ary['tmp_name'] = $filename; |
| 853 | |
| 854 | $file = new filespec($upload_ary, $this); |
| 855 | $this->common_checks($file); |
| 856 | |
| 857 | return $file; |
| 858 | } |
| 859 | |
| 860 | /**
|
| 861 | * Assign internal error |
| 862 | * @access private |
| 863 | */ |
| 864 | function assign_internal_error($errorcode) |
| 865 | {
|
| 866 | global $user; |
| 867 | |
| 868 | switch ($errorcode) |
| 869 | {
|
| 870 | case 1: |
| 871 | $max_filesize = @ini_get('upload_max_filesize'); |
| 872 | $unit = 'MB'; |
| 873 | |
| 874 | if (!empty($max_filesize)) |
| 875 | {
|
| 876 | $unit = strtolower(substr($max_filesize, -1, 1)); |
| 877 | $max_filesize = (int) $max_filesize; |
| 878 | |
| 879 | $unit = ($unit == 'k') ? 'KB' : (($unit == 'g') ? 'GB' : 'MB'); |
| 880 | } |
| 881 | |
| 882 | $error = (empty($max_filesize)) ? $user->lang[$this->error_prefix . 'PHP_SIZE_NA'] : sprintf($user->lang[$this->error_prefix . 'PHP_SIZE_OVERRUN'], $max_filesize, $user->lang[$unit]); |
| 883 | break;
|
| 884 | |
| 885 | case 2: |
| 886 | $max_filesize = get_formatted_filesize($this->max_filesize, false); |
| 887 | |
| 888 | $error = sprintf($user->lang[$this->error_prefix . 'WRONG_FILESIZE'], $max_filesize['value'], $max_filesize['unit']); |
| 889 | break;
|
| 890 | |
| 891 | case 3: |
| 892 | $error = $user->lang[$this->error_prefix . 'PARTIAL_UPLOAD']; |
| 893 | break;
|
| 894 | |
| 895 | case 4: |
| 896 | $error = $user->lang[$this->error_prefix . 'NOT_UPLOADED']; |
| 897 | break;
|
| 898 | |
| 899 | case 6: |
| 900 | $error = 'Temporary folder could not be found. Please check your PHP installation.'; |
| 901 | break;
|
| 902 | |
| 903 | default:
|
| 904 | $error = false; |
| 905 | break;
|
| 906 | } |
| 907 | |
| 908 | return $error; |
| 909 | } |
| 910 | |
| 911 | /**
|
| 912 | * Perform common checks |
| 913 | */ |
| 914 | function common_checks(&$file) |
| 915 | {
|
| 916 | global $user; |
| 917 | |
| 918 | // Filesize is too big or it's 0 if it was larger than the maxsize in the upload form
|
| 919 | if ($this->max_filesize && ($file->get('filesize') > $this->max_filesize || $file->get('filesize') == 0)) |
| 920 | {
|
| 921 | $max_filesize = get_formatted_filesize($this->max_filesize, false); |
| 922 | |
| 923 | $file->error[] = sprintf($user->lang[$this->error_prefix . 'WRONG_FILESIZE'], $max_filesize['value'], $max_filesize['unit']); |
| 924 | } |
| 925 | |
| 926 | // check Filename
|
| 927 | if (preg_match("#[\\/:*?\"<>|]#i", $file->get('realname'))) |
| 928 | {
|
| 929 | $file->error[] = sprintf($user->lang[$this->error_prefix . 'INVALID_FILENAME'], $file->get('realname')); |
| 930 | } |
| 931 | |
| 932 | // Invalid Extension
|
| 933 | if (!$this->valid_extension($file)) |
| 934 | {
|
| 935 | $file->error[] = sprintf($user->lang[$this->error_prefix . 'DISALLOWED_EXTENSION'], $file->get('extension')); |
| 936 | } |
| 937 | |
| 938 | // MIME Sniffing
|
| 939 | if (!$this->valid_content($file)) |
| 940 | {
|
| 941 | $file->error[] = sprintf($user->lang[$this->error_prefix . 'DISALLOWED_CONTENT']); |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | /**
|
| 946 | * Check for allowed extension |
| 947 | */ |
| 948 | function valid_extension(&$file) |
| 949 | {
|
| 950 | return (in_array($file->get('extension'), $this->allowed_extensions)) ? true : false; |
| 951 | } |
| 952 | |
| 953 | /**
|
| 954 | * Check for allowed dimension |
| 955 | */ |
| 956 | function valid_dimensions(&$file) |
| 957 | {
|
| 958 | if (!$this->max_width && !$this->max_height && !$this->min_width && !$this->min_height) |
| 959 | {
|
| 960 | return true; |
| 961 | } |
| 962 | |
| 963 | if (($file->get('width') > $this->max_width && $this->max_width) || |
| 964 | ($file->get('height') > $this->max_height && $this->max_height) || |
| 965 | ($file->get('width') < $this->min_width && $this->min_width) || |
| 966 | ($file->get('height') < $this->min_height && $this->min_height)) |
| 967 | {
|
| 968 | return false; |
| 969 | } |
| 970 | |
| 971 | return true; |
| 972 | } |
| 973 | |
| 974 | /**
|
| 975 | * Check if form upload is valid |
| 976 | */ |
| 977 | function is_valid($form_name) |
| 978 | {
|
| 979 | return (isset($_FILES[$form_name]) && $_FILES[$form_name]['name'] != 'none') ? true : false; |
| 980 | } |
| 981 | |
| 982 | |
| 983 | /**
|
| 984 | * Check for bad content (IE mime-sniffing) |
| 985 | */ |
| 986 | function valid_content(&$file) |
| 987 | {
|
| 988 | return ($file->check_content($this->disallowed_content)); |
| 989 | } |
| 990 | |
| 991 | /**
|
| 992 | * Return image type/extension mapping |
| 993 | */ |
| 994 | function image_types() |
| 995 | {
|
| 996 | return array( |
| 997 | IMAGETYPE_GIF => array('gif'), |
| 998 | IMAGETYPE_JPEG => array('jpg', 'jpeg'), |
| 999 | IMAGETYPE_PNG => array('png'), |
| 1000 | IMAGETYPE_SWF => array('swf'), |
| 1001 | IMAGETYPE_PSD => array('psd'), |
| 1002 | IMAGETYPE_BMP => array('bmp'), |
| 1003 | IMAGETYPE_TIFF_II => array('tif', 'tiff'), |
| 1004 | IMAGETYPE_TIFF_MM => array('tif', 'tiff'), |
| 1005 | IMAGETYPE_JPC => array('jpg', 'jpeg'), |
| 1006 | IMAGETYPE_JP2 => array('jpg', 'jpeg'), |
| 1007 | IMAGETYPE_JPX => array('jpg', 'jpeg'), |
| 1008 | IMAGETYPE_JB2 => array('jpg', 'jpeg'), |
| 1009 | IMAGETYPE_SWC => array('swc'), |
| 1010 | IMAGETYPE_IFF => array('iff'), |
| 1011 | IMAGETYPE_WBMP => array('wbmp'), |
| 1012 | IMAGETYPE_XBM => array('xbm'), |
| 1013 | ); |
| 1014 | } |
| 1015 | } |