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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | /** |
| 15 | * @ignore |
| 16 | */ |
| 17 | if (!defined('IN_PHPBB')) |
| 18 | { |
| 19 | exit; |
| 20 | } |
| 21 | |
| 22 | /** |
| 23 | * Transfer class, wrapper for ftp/sftp/ssh |
| 24 | */ |
| 25 | class transfer |
| 26 | { |
| 27 | var $connection; |
| 28 | var $host; |
| 29 | var $port; |
| 30 | var $username; |
| 31 | var $password; |
| 32 | var $timeout; |
| 33 | var $root_path; |
| 34 | var $tmp_path; |
| 35 | var $file_perms; |
| 36 | var $dir_perms; |
| 37 | |
| 38 | /** |
| 39 | * Constructor - init some basic values |
| 40 | */ |
| 41 | function __construct() |
| 42 | { |
| 43 | global $phpbb_root_path; |
| 44 | |
| 45 | $this->file_perms = 0644; |
| 46 | $this->dir_perms = 0777; |
| 47 | |
| 48 | // We use the store directory as temporary path to circumvent open basedir restrictions |
| 49 | $this->tmp_path = $phpbb_root_path . 'store/'; |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Write file to location |
| 54 | */ |
| 55 | function write_file($destination_file = '', $contents = '') |
| 56 | { |
| 57 | global $phpbb_root_path; |
| 58 | |
| 59 | $destination_file = $this->root_path . str_replace($phpbb_root_path, '', $destination_file); |
| 60 | |
| 61 | // need to create a temp file and then move that temp file. |
| 62 | // ftp functions can only move files around and can't create. |
| 63 | // This means that the users will need to have access to write |
| 64 | // temporary files or have write access on a folder within phpBB |
| 65 | // like the cache folder. If the user can't do either, then |
| 66 | // he/she needs to use the fsock ftp method |
| 67 | $temp_name = tempnam($this->tmp_path, 'transfer_'); |
| 68 | @unlink($temp_name); |
| 69 | |
| 70 | $fp = @fopen($temp_name, 'w'); |
| 71 | |
| 72 | if (!$fp) |
| 73 | { |
| 74 | trigger_error('Unable to create temporary file ' . $temp_name, E_USER_ERROR); |
| 75 | } |
| 76 | |
| 77 | @fwrite($fp, $contents); |
| 78 | @fclose($fp); |
| 79 | |
| 80 | $result = $this->overwrite_file($temp_name, $destination_file); |
| 81 | |
| 82 | // remove temporary file now |
| 83 | @unlink($temp_name); |
| 84 | |
| 85 | return $result; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Moving file into location. If the destination file already exists it gets overwritten |
| 90 | */ |
| 91 | function overwrite_file($source_file, $destination_file) |
| 92 | { |
| 93 | /** |
| 94 | * @todo generally think about overwriting files in another way, by creating a temporary file and then renaming it |
| 95 | * @todo check for the destination file existance too |
| 96 | */ |
| 97 | $this->_delete($destination_file); |
| 98 | $result = $this->_put($source_file, $destination_file); |
| 99 | $this->_chmod($destination_file, $this->file_perms); |
| 100 | |
| 101 | return $result; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Create directory structure |
| 106 | */ |
| 107 | function make_dir($dir) |
| 108 | { |
| 109 | global $phpbb_root_path; |
| 110 | |
| 111 | $dir = str_replace($phpbb_root_path, '', $dir); |
| 112 | $dir = explode('/', $dir); |
| 113 | $dirs = ''; |
| 114 | |
| 115 | for ($i = 0, $total = count($dir); $i < $total; $i++) |
| 116 | { |
| 117 | $result = true; |
| 118 | |
| 119 | if (strpos($dir[$i], '.') === 0) |
| 120 | { |
| 121 | continue; |
| 122 | } |
| 123 | $cur_dir = $dir[$i] . '/'; |
| 124 | |
| 125 | if (!file_exists($phpbb_root_path . $dirs . $cur_dir)) |
| 126 | { |
| 127 | // create the directory |
| 128 | $result = $this->_mkdir($dir[$i]); |
| 129 | $this->_chmod($dir[$i], $this->dir_perms); |
| 130 | } |
| 131 | |
| 132 | $this->_chdir($this->root_path . $dirs . $dir[$i]); |
| 133 | $dirs .= $cur_dir; |
| 134 | } |
| 135 | |
| 136 | $this->_chdir($this->root_path); |
| 137 | |
| 138 | /** |
| 139 | * @todo stack result into array to make sure every path creation has been taken care of |
| 140 | */ |
| 141 | return $result; |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * Copy file from source location to destination location |
| 146 | */ |
| 147 | function copy_file($from_loc, $to_loc) |
| 148 | { |
| 149 | global $phpbb_root_path; |
| 150 | |
| 151 | $from_loc = ((strpos($from_loc, $phpbb_root_path) !== 0) ? $phpbb_root_path : '') . $from_loc; |
| 152 | $to_loc = $this->root_path . str_replace($phpbb_root_path, '', $to_loc); |
| 153 | |
| 154 | if (!file_exists($from_loc)) |
| 155 | { |
| 156 | return false; |
| 157 | } |
| 158 | |
| 159 | $result = $this->overwrite_file($from_loc, $to_loc); |
| 160 | |
| 161 | return $result; |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Remove file |
| 166 | */ |
| 167 | function delete_file($file) |
| 168 | { |
| 169 | global $phpbb_root_path; |
| 170 | |
| 171 | $file = $this->root_path . str_replace($phpbb_root_path, '', $file); |
| 172 | |
| 173 | return $this->_delete($file); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Remove directory |
| 178 | * @todo remove child directories? |
| 179 | */ |
| 180 | function remove_dir($dir) |
| 181 | { |
| 182 | global $phpbb_root_path; |
| 183 | |
| 184 | $dir = $this->root_path . str_replace($phpbb_root_path, '', $dir); |
| 185 | |
| 186 | return $this->_rmdir($dir); |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * Rename a file or folder |
| 191 | */ |
| 192 | function rename($old_handle, $new_handle) |
| 193 | { |
| 194 | global $phpbb_root_path; |
| 195 | |
| 196 | $old_handle = $this->root_path . str_replace($phpbb_root_path, '', $old_handle); |
| 197 | |
| 198 | return $this->_rename($old_handle, $new_handle); |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Check if a specified file exist... |
| 203 | */ |
| 204 | function file_exists($directory, $filename) |
| 205 | { |
| 206 | global $phpbb_root_path; |
| 207 | |
| 208 | $directory = $this->root_path . str_replace($phpbb_root_path, '', $directory); |
| 209 | |
| 210 | $this->_chdir($directory); |
| 211 | $result = $this->_ls(); |
| 212 | |
| 213 | if ($result !== false && is_array($result)) |
| 214 | { |
| 215 | return (in_array($filename, $result)) ? true : false; |
| 216 | } |
| 217 | |
| 218 | return false; |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Open session |
| 223 | */ |
| 224 | function open_session() |
| 225 | { |
| 226 | return $this->_init(); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * Close current session |
| 231 | */ |
| 232 | function close_session() |
| 233 | { |
| 234 | return $this->_close(); |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Determine methods able to be used |
| 239 | */ |
| 240 | public static function methods() |
| 241 | { |
| 242 | $methods = array(); |
| 243 | $disabled_functions = explode(',', @ini_get('disable_functions')); |
| 244 | |
| 245 | if (@extension_loaded('ftp')) |
| 246 | { |
| 247 | $methods[] = 'ftp'; |
| 248 | } |
| 249 | |
| 250 | if (!in_array('fsockopen', $disabled_functions)) |
| 251 | { |
| 252 | $methods[] = 'ftp_fsock'; |
| 253 | } |
| 254 | |
| 255 | return $methods; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * FTP transfer class |
| 261 | */ |
| 262 | class ftp extends transfer |
| 263 | { |
| 264 | /** |
| 265 | * Standard parameters for FTP session |
| 266 | */ |
| 267 | function __construct($host, $username, $password, $root_path, $port = 21, $timeout = 10) |
| 268 | { |
| 269 | $this->host = $host; |
| 270 | $this->port = $port; |
| 271 | $this->username = $username; |
| 272 | $this->password = $password; |
| 273 | $this->timeout = $timeout; |
| 274 | |
| 275 | // Make sure $this->root_path is layed out the same way as the $user->page['root_script_path'] value (/ at the end) |
| 276 | $this->root_path = str_replace('\\', '/', $this->root_path); |
| 277 | |
| 278 | if (!empty($root_path)) |
| 279 | { |
| 280 | $this->root_path = (($root_path[0] != '/' ) ? '/' : '') . $root_path . ((substr($root_path, -1, 1) == '/') ? '' : '/'); |
| 281 | } |
| 282 | |
| 283 | // Init some needed values |
| 284 | parent::__construct(); |
| 285 | |
| 286 | return; |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * Requests data |
| 291 | */ |
| 292 | public static function data() |
| 293 | { |
| 294 | global $user; |
| 295 | |
| 296 | return array( |
| 297 | 'host' => 'localhost', |
| 298 | 'username' => 'anonymous', |
| 299 | 'password' => '', |
| 300 | 'root_path' => $user->page['root_script_path'], |
| 301 | 'port' => 21, |
| 302 | 'timeout' => 10 |
| 303 | ); |
| 304 | } |
| 305 | |
| 306 | /** |
| 307 | * Init FTP Session |
| 308 | * @access private |
| 309 | */ |
| 310 | function _init() |
| 311 | { |
| 312 | // connect to the server |
| 313 | $this->connection = @ftp_connect($this->host, $this->port, $this->timeout); |
| 314 | |
| 315 | if (!$this->connection) |
| 316 | { |
| 317 | return 'ERR_CONNECTING_SERVER'; |
| 318 | } |
| 319 | |
| 320 | // login to the server |
| 321 | if (!@ftp_login($this->connection, $this->username, $this->password)) |
| 322 | { |
| 323 | return 'ERR_UNABLE_TO_LOGIN'; |
| 324 | } |
| 325 | |
| 326 | // attempt to turn pasv mode on |
| 327 | @ftp_pasv($this->connection, true); |
| 328 | |
| 329 | // change to the root directory |
| 330 | if (!$this->_chdir($this->root_path)) |
| 331 | { |
| 332 | return 'ERR_CHANGING_DIRECTORY'; |
| 333 | } |
| 334 | |
| 335 | return true; |
| 336 | } |
| 337 | |
| 338 | /** |
| 339 | * Create Directory (MKDIR) |
| 340 | * @access private |
| 341 | */ |
| 342 | function _mkdir($dir) |
| 343 | { |
| 344 | if (!$this->connection) |
| 345 | { |
| 346 | return false; |
| 347 | } |
| 348 | |
| 349 | return @ftp_mkdir($this->connection, $dir); |
| 350 | } |
| 351 | |
| 352 | /** |
| 353 | * Remove directory (RMDIR) |
| 354 | * @access private |
| 355 | */ |
| 356 | function _rmdir($dir) |
| 357 | { |
| 358 | if (!$this->connection) |
| 359 | { |
| 360 | return false; |
| 361 | } |
| 362 | |
| 363 | return @ftp_rmdir($this->connection, $dir); |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * Rename file |
| 368 | * @access private |
| 369 | */ |
| 370 | function _rename($old_handle, $new_handle) |
| 371 | { |
| 372 | if (!$this->connection) |
| 373 | { |
| 374 | return false; |
| 375 | } |
| 376 | |
| 377 | return @ftp_rename($this->connection, $old_handle, $new_handle); |
| 378 | } |
| 379 | |
| 380 | /** |
| 381 | * Change current working directory (CHDIR) |
| 382 | * @access private |
| 383 | */ |
| 384 | function _chdir($dir = '') |
| 385 | { |
| 386 | if (!$this->connection) |
| 387 | { |
| 388 | return false; |
| 389 | } |
| 390 | |
| 391 | if ($dir && $dir !== '/') |
| 392 | { |
| 393 | if (substr($dir, -1, 1) == '/') |
| 394 | { |
| 395 | $dir = substr($dir, 0, -1); |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | return @ftp_chdir($this->connection, $dir); |
| 400 | } |
| 401 | |
| 402 | /** |
| 403 | * change file permissions (CHMOD) |
| 404 | * @access private |
| 405 | */ |
| 406 | function _chmod($file, $perms) |
| 407 | { |
| 408 | if (!$this->connection) |
| 409 | { |
| 410 | return false; |
| 411 | } |
| 412 | |
| 413 | if (function_exists('ftp_chmod')) |
| 414 | { |
| 415 | $err = @ftp_chmod($this->connection, $perms, $file); |
| 416 | } |
| 417 | else |
| 418 | { |
| 419 | // Unfortunatly CHMOD is not expecting an octal value... |
| 420 | // We need to transform the integer (which was an octal) to an octal representation (to get the int) and then pass as is. ;) |
| 421 | $chmod_cmd = 'CHMOD ' . base_convert($perms, 10, 8) . ' ' . $file; |
| 422 | $err = $this->_site($chmod_cmd); |
| 423 | } |
| 424 | |
| 425 | return $err; |
| 426 | } |
| 427 | |
| 428 | /** |
| 429 | * Upload file to location (PUT) |
| 430 | * @access private |
| 431 | */ |
| 432 | function _put($from_file, $to_file) |
| 433 | { |
| 434 | if (!$this->connection) |
| 435 | { |
| 436 | return false; |
| 437 | } |
| 438 | |
| 439 | // We only use the BINARY file mode to cicumvent rewrite actions from ftp server (mostly linefeeds being replaced) |
| 440 | $mode = FTP_BINARY; |
| 441 | |
| 442 | $to_dir = dirname($to_file); |
| 443 | $to_file = basename($to_file); |
| 444 | $this->_chdir($to_dir); |
| 445 | |
| 446 | $result = @ftp_put($this->connection, $to_file, $from_file, $mode); |
| 447 | $this->_chdir($this->root_path); |
| 448 | |
| 449 | return $result; |
| 450 | } |
| 451 | |
| 452 | /** |
| 453 | * Delete file (DELETE) |
| 454 | * @access private |
| 455 | */ |
| 456 | function _delete($file) |
| 457 | { |
| 458 | if (!$this->connection) |
| 459 | { |
| 460 | return false; |
| 461 | } |
| 462 | |
| 463 | return @ftp_delete($this->connection, $file); |
| 464 | } |
| 465 | |
| 466 | /** |
| 467 | * Close ftp session (CLOSE) |
| 468 | * @access private |
| 469 | */ |
| 470 | function _close() |
| 471 | { |
| 472 | if (!$this->connection) |
| 473 | { |
| 474 | return false; |
| 475 | } |
| 476 | |
| 477 | return @ftp_quit($this->connection); |
| 478 | } |
| 479 | |
| 480 | /** |
| 481 | * Return current working directory (CWD) |
| 482 | * At the moment not used by parent class |
| 483 | * @access private |
| 484 | */ |
| 485 | function _cwd() |
| 486 | { |
| 487 | if (!$this->connection) |
| 488 | { |
| 489 | return false; |
| 490 | } |
| 491 | |
| 492 | return @ftp_pwd($this->connection); |
| 493 | } |
| 494 | |
| 495 | /** |
| 496 | * Return list of files in a given directory (LS) |
| 497 | * @access private |
| 498 | */ |
| 499 | function _ls($dir = './') |
| 500 | { |
| 501 | if (!$this->connection) |
| 502 | { |
| 503 | return false; |
| 504 | } |
| 505 | |
| 506 | $list = @ftp_nlist($this->connection, $dir); |
| 507 | |
| 508 | // See bug #46295 - Some FTP daemons don't like './' |
| 509 | if ($dir === './') |
| 510 | { |
| 511 | // Let's try some alternatives |
| 512 | $list = (empty($list)) ? @ftp_nlist($this->connection, '.') : $list; |
| 513 | $list = (empty($list)) ? @ftp_nlist($this->connection, '') : $list; |
| 514 | } |
| 515 | |
| 516 | // Return on error |
| 517 | if ($list === false) |
| 518 | { |
| 519 | return false; |
| 520 | } |
| 521 | |
| 522 | // Remove path if prepended |
| 523 | foreach ($list as $key => $item) |
| 524 | { |
| 525 | // Use same separator for item and dir |
| 526 | $item = str_replace('\\', '/', $item); |
| 527 | $dir = str_replace('\\', '/', $dir); |
| 528 | |
| 529 | if (!empty($dir) && strpos($item, $dir) === 0) |
| 530 | { |
| 531 | $item = substr($item, strlen($dir)); |
| 532 | } |
| 533 | |
| 534 | $list[$key] = $item; |
| 535 | } |
| 536 | |
| 537 | return $list; |
| 538 | } |
| 539 | |
| 540 | /** |
| 541 | * FTP SITE command (ftp-only function) |
| 542 | * @access private |
| 543 | */ |
| 544 | function _site($command) |
| 545 | { |
| 546 | if (!$this->connection) |
| 547 | { |
| 548 | return false; |
| 549 | } |
| 550 | |
| 551 | return @ftp_site($this->connection, $command); |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | /** |
| 556 | * FTP fsock transfer class |
| 557 | */ |
| 558 | class ftp_fsock extends transfer |
| 559 | { |
| 560 | var $data_connection; |
| 561 | |
| 562 | /** |
| 563 | * Standard parameters for FTP session |
| 564 | */ |
| 565 | function __construct($host, $username, $password, $root_path, $port = 21, $timeout = 10) |
| 566 | { |
| 567 | $this->host = $host; |
| 568 | $this->port = $port; |
| 569 | $this->username = $username; |
| 570 | $this->password = $password; |
| 571 | $this->timeout = $timeout; |
| 572 | |
| 573 | // Make sure $this->root_path is layed out the same way as the $user->page['root_script_path'] value (/ at the end) |
| 574 | $this->root_path = str_replace('\\', '/', $this->root_path); |
| 575 | |
| 576 | if (!empty($root_path)) |
| 577 | { |
| 578 | $this->root_path = (($root_path[0] != '/' ) ? '/' : '') . $root_path . ((substr($root_path, -1, 1) == '/') ? '' : '/'); |
| 579 | } |
| 580 | |
| 581 | // Init some needed values |
| 582 | parent::__construct(); |
| 583 | |
| 584 | return; |
| 585 | } |
| 586 | |
| 587 | /** |
| 588 | * Requests data |
| 589 | */ |
| 590 | public static function data() |
| 591 | { |
| 592 | global $user; |
| 593 | |
| 594 | return array( |
| 595 | 'host' => 'localhost', |
| 596 | 'username' => 'anonymous', |
| 597 | 'password' => '', |
| 598 | 'root_path' => $user->page['root_script_path'], |
| 599 | 'port' => 21, |
| 600 | 'timeout' => 10 |
| 601 | ); |
| 602 | } |
| 603 | |
| 604 | /** |
| 605 | * Init FTP Session |
| 606 | * @access private |
| 607 | */ |
| 608 | function _init() |
| 609 | { |
| 610 | $errno = 0; |
| 611 | $errstr = ''; |
| 612 | |
| 613 | // connect to the server |
| 614 | $this->connection = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout); |
| 615 | |
| 616 | if (!$this->connection || !$this->_check_command()) |
| 617 | { |
| 618 | return 'ERR_CONNECTING_SERVER'; |
| 619 | } |
| 620 | |
| 621 | @stream_set_timeout($this->connection, $this->timeout); |
| 622 | |
| 623 | // login |
| 624 | if (!$this->_send_command('USER', $this->username)) |
| 625 | { |
| 626 | return 'ERR_UNABLE_TO_LOGIN'; |
| 627 | } |
| 628 | |
| 629 | if (!$this->_send_command('PASS', $this->password)) |
| 630 | { |
| 631 | return 'ERR_UNABLE_TO_LOGIN'; |
| 632 | } |
| 633 | |
| 634 | // change to the root directory |
| 635 | if (!$this->_chdir($this->root_path)) |
| 636 | { |
| 637 | return 'ERR_CHANGING_DIRECTORY'; |
| 638 | } |
| 639 | |
| 640 | return true; |
| 641 | } |
| 642 | |
| 643 | /** |
| 644 | * Create Directory (MKDIR) |
| 645 | * @access private |
| 646 | */ |
| 647 | function _mkdir($dir) |
| 648 | { |
| 649 | return $this->_send_command('MKD', $dir); |
| 650 | } |
| 651 | |
| 652 | /** |
| 653 | * Remove directory (RMDIR) |
| 654 | * @access private |
| 655 | */ |
| 656 | function _rmdir($dir) |
| 657 | { |
| 658 | return $this->_send_command('RMD', $dir); |
| 659 | } |
| 660 | |
| 661 | /** |
| 662 | * Rename File |
| 663 | * @access private |
| 664 | */ |
| 665 | function _rename($old_handle, $new_handle) |
| 666 | { |
| 667 | $this->_send_command('RNFR', $old_handle); |
| 668 | return $this->_send_command('RNTO', $new_handle); |
| 669 | } |
| 670 | |
| 671 | /** |
| 672 | * Change current working directory (CHDIR) |
| 673 | * @access private |
| 674 | */ |
| 675 | function _chdir($dir = '') |
| 676 | { |
| 677 | if ($dir && $dir !== '/') |
| 678 | { |
| 679 | if (substr($dir, -1, 1) == '/') |
| 680 | { |
| 681 | $dir = substr($dir, 0, -1); |
| 682 | } |
| 683 | } |
| 684 | |
| 685 | return $this->_send_command('CWD', $dir); |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * change file permissions (CHMOD) |
| 690 | * @access private |
| 691 | */ |
| 692 | function _chmod($file, $perms) |
| 693 | { |
| 694 | // Unfortunatly CHMOD is not expecting an octal value... |
| 695 | // We need to transform the integer (which was an octal) to an octal representation (to get the int) and then pass as is. ;) |
| 696 | return $this->_send_command('SITE CHMOD', base_convert($perms, 10, 8) . ' ' . $file); |
| 697 | } |
| 698 | |
| 699 | /** |
| 700 | * Upload file to location (PUT) |
| 701 | * @access private |
| 702 | */ |
| 703 | function _put($from_file, $to_file) |
| 704 | { |
| 705 | // We only use the BINARY file mode to cicumvent rewrite actions from ftp server (mostly linefeeds being replaced) |
| 706 | // 'I' == BINARY |
| 707 | // 'A' == ASCII |
| 708 | if (!$this->_send_command('TYPE', 'I')) |
| 709 | { |
| 710 | return false; |
| 711 | } |
| 712 | |
| 713 | // open the connection to send file over |
| 714 | if (!$this->_open_data_connection()) |
| 715 | { |
| 716 | return false; |
| 717 | } |
| 718 | |
| 719 | $this->_send_command('STOR', $to_file, false); |
| 720 | |
| 721 | // send the file |
| 722 | $fp = @fopen($from_file, 'rb'); |
| 723 | while (!@feof($fp)) |
| 724 | { |
| 725 | @fwrite($this->data_connection, @fread($fp, 4096)); |
| 726 | } |
| 727 | @fclose($fp); |
| 728 | |
| 729 | // close connection |
| 730 | $this->_close_data_connection(); |
| 731 | |
| 732 | return $this->_check_command(); |
| 733 | } |
| 734 | |
| 735 | /** |
| 736 | * Delete file (DELETE) |
| 737 | * @access private |
| 738 | */ |
| 739 | function _delete($file) |
| 740 | { |
| 741 | return $this->_send_command('DELE', $file); |
| 742 | } |
| 743 | |
| 744 | /** |
| 745 | * Close ftp session (CLOSE) |
| 746 | * @access private |
| 747 | */ |
| 748 | function _close() |
| 749 | { |
| 750 | if (!$this->connection) |
| 751 | { |
| 752 | return false; |
| 753 | } |
| 754 | |
| 755 | return $this->_send_command('QUIT'); |
| 756 | } |
| 757 | |
| 758 | /** |
| 759 | * Return current working directory (CWD) |
| 760 | * At the moment not used by parent class |
| 761 | * @access private |
| 762 | */ |
| 763 | function _cwd() |
| 764 | { |
| 765 | $this->_send_command('PWD', '', false); |
| 766 | return preg_replace('#^[0-9]{3} "(.+)" .+\r\n#', '\\1', $this->_check_command(true)); |
| 767 | } |
| 768 | |
| 769 | /** |
| 770 | * Return list of files in a given directory (LS) |
| 771 | * @access private |
| 772 | */ |
| 773 | function _ls($dir = './') |
| 774 | { |
| 775 | if (!$this->_open_data_connection()) |
| 776 | { |
| 777 | return false; |
| 778 | } |
| 779 | |
| 780 | $this->_send_command('NLST', $dir); |
| 781 | |
| 782 | $list = array(); |
| 783 | while (!@feof($this->data_connection)) |
| 784 | { |
| 785 | $filename = preg_replace('#[\r\n]#', '', @fgets($this->data_connection, 512)); |
| 786 | |
| 787 | if ($filename !== '') |
| 788 | { |
| 789 | $list[] = $filename; |
| 790 | } |
| 791 | } |
| 792 | $this->_close_data_connection(); |
| 793 | |
| 794 | // Clear buffer |
| 795 | $this->_check_command(); |
| 796 | |
| 797 | // See bug #46295 - Some FTP daemons don't like './' |
| 798 | if ($dir === './' && empty($list)) |
| 799 | { |
| 800 | // Let's try some alternatives |
| 801 | $list = $this->_ls('.'); |
| 802 | |
| 803 | if (empty($list)) |
| 804 | { |
| 805 | $list = $this->_ls(''); |
| 806 | } |
| 807 | |
| 808 | return $list; |
| 809 | } |
| 810 | |
| 811 | // Remove path if prepended |
| 812 | foreach ($list as $key => $item) |
| 813 | { |
| 814 | // Use same separator for item and dir |
| 815 | $item = str_replace('\\', '/', $item); |
| 816 | $dir = str_replace('\\', '/', $dir); |
| 817 | |
| 818 | if (!empty($dir) && strpos($item, $dir) === 0) |
| 819 | { |
| 820 | $item = substr($item, strlen($dir)); |
| 821 | } |
| 822 | |
| 823 | $list[$key] = $item; |
| 824 | } |
| 825 | |
| 826 | return $list; |
| 827 | } |
| 828 | |
| 829 | /** |
| 830 | * Send a command to server (FTP fsock only function) |
| 831 | * @access private |
| 832 | */ |
| 833 | function _send_command($command, $args = '', $check = true) |
| 834 | { |
| 835 | if (!$this->connection) |
| 836 | { |
| 837 | return false; |
| 838 | } |
| 839 | |
| 840 | if (!empty($args)) |
| 841 | { |
| 842 | $command = "$command $args"; |
| 843 | } |
| 844 | |
| 845 | fwrite($this->connection, $command . "\r\n"); |
| 846 | |
| 847 | if ($check === true && !$this->_check_command()) |
| 848 | { |
| 849 | return false; |
| 850 | } |
| 851 | |
| 852 | return true; |
| 853 | } |
| 854 | |
| 855 | /** |
| 856 | * Opens a connection to send data (FTP fosck only function) |
| 857 | * @access private |
| 858 | */ |
| 859 | function _open_data_connection() |
| 860 | { |
| 861 | // Try to find out whether we have a IPv4 or IPv6 (control) connection |
| 862 | if (function_exists('stream_socket_get_name')) |
| 863 | { |
| 864 | $socket_name = stream_socket_get_name($this->connection, true); |
| 865 | $server_ip = substr($socket_name, 0, strrpos($socket_name, ':')); |
| 866 | } |
| 867 | |
| 868 | if (isset($server_ip) && filter_var($server_ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) // ipv4 |
| 869 | { |
| 870 | // Passive mode |
| 871 | $this->_send_command('PASV', '', false); |
| 872 | |
| 873 | if (!$ip_port = $this->_check_command(true)) |
| 874 | { |
| 875 | return false; |
| 876 | } |
| 877 | |
| 878 | // open the connection to start sending the file |
| 879 | if (!preg_match('#[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+#', $ip_port, $temp)) |
| 880 | { |
| 881 | // bad ip and port |
| 882 | return false; |
| 883 | } |
| 884 | |
| 885 | $temp = explode(',', $temp[0]); |
| 886 | $server_ip = $temp[0] . '.' . $temp[1] . '.' . $temp[2] . '.' . $temp[3]; |
| 887 | $server_port = $temp[4] * 256 + $temp[5]; |
| 888 | } |
| 889 | else // ipv6 |
| 890 | { |
| 891 | // Extended Passive Mode - RFC2428 |
| 892 | $this->_send_command('EPSV', '', false); |
| 893 | |
| 894 | if (!$epsv_response = $this->_check_command(true)) |
| 895 | { |
| 896 | return false; |
| 897 | } |
| 898 | |
| 899 | // Response looks like "229 Entering Extended Passive Mode (|||12345|)" |
| 900 | // where 12345 is the tcp port for the data connection |
| 901 | if (!preg_match('#\(\|\|\|([0-9]+)\|\)#', $epsv_response, $match)) |
| 902 | { |
| 903 | return false; |
| 904 | } |
| 905 | $server_port = (int) $match[1]; |
| 906 | |
| 907 | // fsockopen expects IPv6 address in square brackets |
| 908 | $server_ip = "[$server_ip]"; |
| 909 | } |
| 910 | |
| 911 | $errno = 0; |
| 912 | $errstr = ''; |
| 913 | |
| 914 | if (!$this->data_connection = @fsockopen($server_ip, $server_port, $errno, $errstr, $this->timeout)) |
| 915 | { |
| 916 | return false; |
| 917 | } |
| 918 | @stream_set_timeout($this->data_connection, $this->timeout); |
| 919 | |
| 920 | return true; |
| 921 | } |
| 922 | |
| 923 | /** |
| 924 | * Closes a connection used to send data |
| 925 | * @access private |
| 926 | */ |
| 927 | function _close_data_connection() |
| 928 | { |
| 929 | if (!$this->connection) |
| 930 | { |
| 931 | return false; |
| 932 | } |
| 933 | |
| 934 | return @fclose($this->data_connection); |
| 935 | } |
| 936 | |
| 937 | /** |
| 938 | * Check to make sure command was successful (FTP fsock only function) |
| 939 | * @access private |
| 940 | */ |
| 941 | function _check_command($return = false) |
| 942 | { |
| 943 | if (!$this->connection) |
| 944 | { |
| 945 | return false; |
| 946 | } |
| 947 | |
| 948 | $response = ''; |
| 949 | |
| 950 | do |
| 951 | { |
| 952 | $result = @fgets($this->connection, 512); |
| 953 | $response .= $result; |
| 954 | } |
| 955 | while (substr($result, 3, 1) !== ' '); |
| 956 | |
| 957 | if (!preg_match('#^[123]#', $response)) |
| 958 | { |
| 959 | return false; |
| 960 | } |
| 961 | |
| 962 | return ($return) ? $response : true; |
| 963 | } |
| 964 | } |